Tooling is held within the nose of a rotary punch and as the tool is rotated and forced against a workpiece a fastener within the tool becomes affixed to the workpiece. The tools have displacers which non-destructively deform and reshape the workpiece without any loss of workpiece material. The tools have various types of displacers including: tapered and arcuate displacers which act in concert to progressively act upon the workpiece; spherical displacers which may be fixed. or a full-circle displacer ring which wobbles as it presses against the workpiece. In the case of fixed spherical displacers, a multi-stroke method can be employed where the tool is rotated after each stroke in a group of installation strokes.
B25B 27/00 - Hand tools or bench devices, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
B23P 11/00 - Connecting or disconnecting metal parts or objects by metal-working techniques, not otherwise provided for
B23P 19/06 - Screw or nut setting or loosening machines
F16B 37/06 - Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
A fastener assembly for releasable interconnecting two objects comprises a retainer having means at the top end for attaching the retainer to a first object and an end wall at the bottom end having an aperture. A post affixed to a second object at its bottom end is captured within a central cavity of the retainer by resilient snap fit wherein either the post or the retainer is radially deflectable. A locking element slidably connected to the retainer is axially moveable between locked and unlocked positions operative to restrict the relative radial movement of the post and the retainer to prevent the removal of the post. The locking element maybe a pin moved by a magnet and extendable into a bore of the post by a spring. Alternatively, the locking element may be a sleeve closely fitted around the outside of the retainer.
A clinch-in fastener with a cylindrical body having a top, a bottom, sides and an axial internal bore. The fastener has a single shank at the bottom end of the body having a top surface orthogonal to the bore and a chamfer tapering to the bottom of the body. The top surface of the shank is adapted for receiving the cold flow of material surrounding a receiving hole of a workpiece. The shank may have a plurality of notches in its outermost edge that extend through both the top surface of the shank and the chamfer. The bore of the fastener extends completely through the fastener body from top to bottom and may be threaded. A fastener installation system having a tool with means for affixation to a rotary and vertically reciprocal element of an industrial machine. The tip of the tool has a distal end face with at least one arcuate displacer adapted for deforming a workpiece as the tool rotates and is pressed against the workpiece. A bore within the tip holds a fastener installed by the tool. The displacer is vertically and radially tapered along an arcuate ridge centered about the axial bore. The width of the displacer is also tapered to a point.
B23P 19/06 - Screw or nut setting or loosening machines
B21D 39/03 - Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
F16B 37/06 - Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
A circuit board fastening system consists of a two-piece assembly including an electrically conductive circuit board retainer for surface mounting and a flexible clip for retaining a daughter-card to the retainer. The clip is preferably made of a flexible polymer so that a band portion in the middle of the clip can be comfortably folded 180 degrees at a u-shaped bend. During assembly, an arrow-shaped barb at one end of the clip is inserted into a retain bore thereby resiliently securing the daughter-card to a retainer flange upon which the card is seated. At the opposite end of the clip, a notched aperture in the clip is affixed around a groove in the retainer flange. The resilience of the barb provides a residual clamping effect to the daughter-card that is tightly sandwiched between a broad planar portion of the clip and a top surface of the retainer flange.
A clinch-in fastener with a cylindrical body having a top, a bottom, sides and an axial internal bore. The fastener has a single shank at the bottom end of the body having a top surface orthogonal to the bore and a chamfer tapering to the bottom of the body. The top surface of the shank is adapted for receiving the cold flow of material surrounding a receiving hole of a workpiece. The shank may have a plurality of notches in its outermost edge that extend through both the top surface of the shank and the chamfer. The bore of the fastener extends completely through the fastener body from top to bottom and may be threaded. A fastener installation system having a tool with means for affixation to a rotary and vertically reciprocal element of an industrial machine. The tip of the tool has a distal end face with at least one arcuate displacer adapted for deforming a workpiece as the tool rotates and is pressed against the workpiece. A bore within the tip holds a fastener installed by the tool. The displacer is vertically and radially tapered along an arcuate ridge centered about the axial bore. The width of the displacer is also tapered to a point.
B23P 19/06 - Screw or nut setting or loosening machines
B21D 39/03 - Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
A fastener assembly for releasable interconnecting two objects comprises a retainer having means at the top end for attaching the retainer to a first object and an end wall at the bottom end having an aperture. A post affixed to a second object at its bottom end is captured within a central cavity of the retainer by resilient snap fit wherein either the post or the retainer is radially deflectable. A locking element slidably connected to the retainer is axially moveable between locked and unlocked positions operative to restrict the relative radial movement of the post and the retainer to prevent the removal of the post. The locking element maybe a pin moved by a magnet and extendable into a bore of the post by a spring. Alternatively, the locking element may be a sleeve closely fitted around the outside of the retainer.
A fastener assembly for releasable interconnecting two objects includes a retainer having a top end for attaching the retainer to a first object and an end wall at the bottom end having an aperture. A post affixed to a second object at its bottom end is captured within a central cavity of the retainer by resilient snap fit wherein either the post or the retainer is radially deflectable. A locking element slidably connected to the retainer is axially moveable between locked and unlocked positions operative to restrict the relative radial movement of the post and the retainer to prevent the removal of the post. The locking element maybe a pin moved by a magnet and extendable into a bore of the post by a spring. Alternatively, the locking element may be a sleeve closely fitted around the outside of the retainer.
A fastener assembly for releasable interconnecting two objects comprises a retainer having means at the top end for attaching the retainer to a first object and an end wall at the bottom end having an aperture. A post affixed to a second object at its bottom end is captured within a central cavity of the retainer by resilient snap fit wherein either the post or the retainer is radially deflectable. A locking element slidably connected to the retainer is axially moveable between locked and unlocked positions operative to restrict the relative radial movement of the post and the retainer to prevent the removal of the post. The locking element maybe a pin moved by a magnet and extendable into a bore of the post by a spring. Alternatively, the locking element may be a sleeve closely fitted around the outside of the retainer.
The components of a push button comprise a plunger, a retainer, a spring and an end cap. The plunger has a button at the top, a middle section with an enlarged square cross-section, and a pin of reduced diameter at the bottom end. The plunger slidably strokes up and down within a retainer which has an upper portion that closely holds the button on the top of the plunger and also includes a rectilinear recess sized to receive the square midsection of the plunger. A middle portion of the retainer comprises an enlarged cylindrical cavity bounded above and below by opposing roof and floor surfaces. The roof and the floor have cams that engage the corners of the plunger midsection which cause it to rotate during plunger strokes. A spring within the retainer biases the plunger upward. The assembly of parts is captivated by a retainer end cap.
G05G 1/02 - Controlling members for hand-actuation by linear movement, e.g. push buttons
G05G 5/05 - Means for returning or tending to return controlling members to an inoperative or neutral position, e.g. by providing return springs or resilient end-stops
G05G 5/06 - Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in one or a limited number of definite positions only
The components of a push button comprise a plunger, a retainer, a spring and an end cap. The plunger has a button at the top, a middle section with an enlarged square cross-section, and a pin of reduced diameter at the bottom end. The plunger slidably strokes up and down within a retainer which has an upper portion that closely holds the button on the top of the plunger and also includes a rectilinear recess sized to receive the square midsection of the plunger. A middle portion of the retainer comprises an enlarged cylindrical cavity bounded above and below by opposing roof and floor surfaces. The roof and the floor have cams that engage the corners of the plunger midsection which cause it to rotate during plunger strokes. A spring within the retainer biases the plunger upward. The assembly of parts is captivated by a retainer end cap.
G05G 1/02 - Controlling members for hand-actuation by linear movement, e.g. push buttons
G05G 5/05 - Means for returning or tending to return controlling members to an inoperative or neutral position, e.g. by providing return springs or resilient end-stops
G05G 5/06 - Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in one or a limited number of definite positions only
The components of a push button comprise a plunger, a retainer, a spring and an end cap. The plunger has a button at the top, a middle section with an enlarged square cross-section, and a pin of reduced diameter at the bottom end. The plunger slidably strokes up and down within a retainer which has an upper portion that closely holds the button on the top of the plunger and also includes a rectilinear recess sized to receive the square midsection of the plunger. A middle portion of the retainer comprises an enlarged cylindrical cavity bounded above and below by opposing roof and floor surfaces. The roof and the floor have cams that engage the corners of the plunger midsection which cause it to rotate during plunger strokes. A spring within the retainer biases the plunger upward. The assembly of parts is captivated by a retainer end cap.
G05G 1/02 - Controlling members for hand-actuation by linear movement, e.g. push buttons
G05G 7/08 - CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY - Details thereof characterised by special provisions for conveying or converting motion, or for acting at a distance in which repeated movement of the controlling member moves the controlled member through a cycle of distinct positions
G05G 5/05 - Means for returning or tending to return controlling members to an inoperative or neutral position, e.g. by providing return springs or resilient end-stops
G05G 5/06 - Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in one or a limited number of definite positions only
G05G 5/04 - Stops for limiting movement of members, e.g. adjustable stop
The present invention discloses a riveting method and a riveting structure. The riveting method comprises providing a plate having a first side and a second side opposite to the first side; forming a wall portion on the first side of the plate, the wall portion having a first recessed area at its first side and a second recessed area at its second side opposite to the first side; placing the fastener in the first recessed area so that the fastener is adjacent to the first side of the wall portion; and applying a force to the wall portion from the second side of the wall portion so that the wall portion is deformed so as to at least partially enclosed the fastener. This technical solution can avoid unwanted indentation on the back of the plate.
The present invention discloses a riveting method and a riveting structure. The riveting method comprises providing a plate having a first side and a second side opposite to the first side; forming a wall portion on the first side of the plate, the wall portion having a first recessed area at its first side and a second recessed area at its second side opposite to the first side; placing the fastener in the first recessed area so that the fastener is adjacent to the first side of the wall portion; and applying a force to the wall portion from the second side of the wall portion so that the wall portion is deformed so as to at least partially enclosed the fastener. This technical solution can avoid unwanted indentation on the back of the plate.
The present invention discloses a riveting method and a riveting structure. The riveting method comprises providing a plate having a first side and a second side opposite to the first side; forming a wall portion on the first side of the plate, the wall portion having a first recessed area at its first side and a second recessed area at its second side opposite to the first side; placing the fastener in the first recessed area so that the fastener is adjacent to the first side of the wall portion; and applying a force to the wall portion from the second side of the wall portion so that the wall portion is deformed so as to at least partially enclosed the fastener. This technical solution can avoid unwanted indentation on the back of the plate.
A fastening system comprises two interconnecting components for fastening electronic components which can be joined by snap-fit when a fastener component is pressed against a retainer. The fastening system consists of a fastener stud with a planar base at the bottom and an upwardly extending shank with a neck portion of reduced diameter adjacent the base. The stud has a spherical ball portion with a flat planar top surface at a distal top end. The fastener stud mates with a retainer having a planar base and affixed opposing resilient arms extending orthogonally from the base centered about a rotational axis. The arms preferably have compound shaped inner surfaces symmetrical about the axis. These surfaces comprise a cylindrical portion adjacent the base and a spherical portion adjacent the distal ends of the arms.
A fastening system comprises two interconnecting components for fastening electronic components which can be joined by snap-fit when a fastener component is pressed against a retainer. The fastening system consists of a fastener stud with a planar base at the bottom and an upwardly extending shank with a neck portion of reduced diameter adjacent the base. The stud has a spherical ball portion with a flat planar top surface at a distal top end. The fastener stud mates with a retainer having a planar base and affixed opposing resilient arms extending orthogonally from the base centered about a rotational axis. The arms preferably have compound shaped inner surfaces symmetrical about the axis. These surfaces comprise a cylindrical portion adjacent the base and a spherical portion adjacent the distal ends of the arms.
A fastening system comprises two interconnecting components for fastening electronic components which can be joined by snap-fit when a fastener component is pressed against a retainer. The fastening system consists of a fastener stud with a planar base at the bottom and an upwardly extending shank with a neck portion of reduced diameter adjacent the base. The stud has a spherical ball portion with a flat planar top surface at a distal top end. The fastener stud mates with a retainer having a planar base and affixed opposing resilient arms extending orthogonally from the base centered about a rotational axis. The arms preferably have compound shaped inner surfaces symmetrical about the axis. These surfaces comprise a cylindrical portion adjacent the base and a spherical portion adjacent the distal ends of the arms.
Tooling is held within the nose of a rotary punch and as the tool is rotated and forced against a workpiece a fastener within the tool becomes affixed to the workpiece. The tools have displacers which non-destructively deform and reshape the workpiece without any loss of workpiece material. The tools have various types of displacers including; tapered and arcuate displacers which act in concert to progressively act upon the workpiece; spherical displacers which may be fixed or rotatable such as caged ball bearings; and a full-circle displacer ring which wobbles as it presses against the workpiece. In the case of fixed spherical displacers, a multi-stroke method can be employed where the tool is rotated after each stroke in a group of installation strokes.
Tooling is held within the nose of a rotary punch and as the tool is rotated and forced against a workpiece a fastener within the tool becomes affixed to the workpiece. The tools have displacers which non-destructively deform and reshape the workpiece without any loss of workpiece material. The tools have various types of displacers including; tapered and arcuate displacers which act in concert to progressively act upon the workpiece; spherical displacers which may be fixed or rotatable such as caged ball bearings; and a full-circle displacer ring which wobbles as it presses against the workpiece. In the case of fixed spherical displacers, a multi-stroke method can be employed where the tool is rotated after each stroke in a group of installation strokes.
A push button consists of component parts including a plunger, a retainer, a spring and an end cap. The plunger reciprocates within the retainer which has three main portions: an upper portion closely holds the button on the top of the plunger and includes a rectilinear recess that can receive a square midsection of the plunger. A middle portion of the retainer comprises an enlarged cavity that provides the side clearance for the plunger pin's enlarged square midsection to rotate. The cavity is bounded above and below by opposing roof and floor camming structures which engage the corners of the plunger midsection that causes it to rotate. A spring within the retainer biases the plunger upward. An end cap affixed to the bottom of the retainer captivates the plunger and spring assembly and provides attachment means to affix the push button assembly to a supporting structure.
B43K 24/00 - Mechanisms for selecting, projecting, retracting or locking writing units
B43K 24/08 - Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by push-buttons
G05G 7/00 - CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY - Details thereof
H01H 1/12 - Contacts characterised by the manner in which co-operating contacts engage
H01H 1/18 - Contacts characterised by the manner in which co-operating contacts engage by abutting with subsequent sliding
H01H 13/50 - Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
A push button consists of component parts including a plunger, a retainer, a spring and an end cap. The plunger reciprocates within the retainer which has three main portions: an upper portion closely holds the button on the top of the plunger and includes a rectilinear recess that can receive a square midsection of the plunger. A middle portion of the retainer comprises an enlarged cavity that provides the side clearance for the plunger pin's enlarged square midsection to rotate. The cavity is bounded above and below by opposing roof and floor camming structures which engage the corners of the plunger midsection that causes it to rotate. A spring within the retainer biases the plunger upward. An end cap affixed to the bottom of the retainer captivates the plunger and spring assembly and provides attachment means to affix the push button assembly to a supporting structure.
G05G 1/02 - Controlling members for hand-actuation by linear movement, e.g. push buttons
G05G 5/06 - Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in one or a limited number of definite positions only
G05G 5/05 - Means for returning or tending to return controlling members to an inoperative or neutral position, e.g. by providing return springs or resilient end-stops
A push button consists of component parts including a plunger, a retainer, a spring and an end cap. The plunger reciprocates within the retainer which has three main portions: an upper portion closely holds the button on the top of the plunger and includes a rectilinear recess that can receive a square midsection of the plunger. A middle portion of the retainer comprises an enlarged cavity that provides the side clearance for the plunger pin's enlarged square midsection to rotate. The cavity is bounded above and below by opposing roof and floor camming structures which engage the corners of the plunger midsection that causes it to rotate. A spring within the retainer biases the plunger upward. An end cap affixed to the bottom of the retainer captivates the plunger and spring assembly and provides attachment means to affix the push button assembly to a supporting structure.
B43K 24/00 - Mechanisms for selecting, projecting, retracting or locking writing units
B43K 24/08 - Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by push-buttons
H01H 13/50 - Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
H01H 1/18 - Contacts characterised by the manner in which co-operating contacts engage by abutting with subsequent sliding
H01H 1/12 - Contacts characterised by the manner in which co-operating contacts engage
G05G 7/00 - CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY - Details thereof
24.
EXTRUSION FORMING METHOD AND FORMING APPARATUS FOR MANUFACTURING SELF-CLINCHING RIVET
The present invention discloses a extrusion forming method and a forming apparatus for manufacturing a self-clinching rivet, wherein the forming method comprises: upset-extruding a first end of a wire blank to shape it into a material pushing portion and a shank portion billet, upset-extruding the shank portion billet to shape it into a shank portion and a groove portion, and upset-extruding a second end of the wire blank to create a slot portion and a slot shaft portion. Manufacturing the self-clinching rivet by one-time extrusion forming does not generate waste during processing, which greatly improves a utilization rate of raw materials compared with the traditional machining method. Meanwhile, a formed piece manufactured by the present invention has complete metal streamlines, which can greatly improve its strength compared with one manufactured by machining and avoid a risk of hydrogen embrittlement in a subsequent surface treatment.
The present invention discloses a extrusion forming method and a forming apparatus for manufacturing a self-clinching rivet, wherein the forming method comprises: upset-extruding a first end of a wire blank to shape it into a material pushing portion and a shank portion billet, upset-extruding the shank portion billet to shape it into a shank portion and a groove portion, and upset-extruding a second end of the wire blank to create a slot portion and a slot shaft portion. Manufacturing the self-clinching rivet by one-time extrusion forming does not generate waste during processing, which greatly improves a utilization rate of raw materials compared with the traditional machining method. Meanwhile, a formed piece manufactured by the present invention has complete metal streamlines, which can greatly improve its strength compared with one manufactured by machining and avoid a risk of hydrogen embrittlement in a subsequent surface treatment.
A compound screw is a two-piece assembly where the head of the screw can rotate in the tightening direction to a designed tightening torque to drive the screw while being able to positively counter-rotate in the loosening direction. The screw assembly comprises a screw and a cap surrounding the head of the screw. The screw has a head at the top and a threaded shank downwardly extending from a base of the screw head. The screw is turned by turning the cap about a central axis of the screw. The cap is rotatably affixed to the screw head by a loose riveting of the cap to the top most end of the screw head by flaring a thin-walled upwardly extending portion thereof. The cap includes a plurality of axially extending peripheral resilient arms which engage peripheral cam surfaces around the outside of the screw head.
A compound screw is a two-piece assembly where the head of the screw can rotate in the tightening direction to a designed tightening torque to drive the screw while being able to positively counter-rotate in the loosening direction. The screw assembly comprises a screw and a cap surrounding the head of the screw. The screw has a head at the top and a threaded shank downwardly extending from a base of the screw head. The screw is turned by turning the cap about a central axis of the screw. The cap is rotatably affixed to the screw head by a loose riveting of the cap to the top most end of the screw head by flaring a thin-walled upwardly extending portion thereof. The cap includes a plurality of axially extending peripheral resilient arms which engage peripheral cam surfaces around the outside of the screw head.
F16B 31/02 - Screwed connections specially modified in view of tensile load; Break-bolts for indicating or limiting tensile load
F16B 23/00 - Specially-shaped heads of bolts or screws for rotations by a tool
F16B 31/00 - Screwed connections specially modified in view of tensile load; Break-bolts
F16B 39/08 - Locking of screws, bolts, or nuts in which the locking takes place after screwing down with a cap interacting with the nut, connected to the bolt by a pin or cotter-pin
A compound screw is a two-piece assembly where the head of the screw can rotate in the tightening direction to a designed tightening torque to drive the screw while being able to positively counter-rotate in the loosening direction. The screw assembly comprises a screw and a cap surrounding the head of the screw. The screw has a head at the top and a threaded shank downwardly extending from a base of the screw head. The screw is turned by turning the cap about a central axis of the screw. The cap is rotatably affixed to the screw head by a loose riveting of the cap to the top most end of the screw head by flaring a thin-walled upwardly extending portion thereof. The cap includes a plurality of axially extending peripheral resilient arms which engage peripheral cam surfaces around the outside of the screw head.
The present rivet invention has a main body comprising a first end and a second end opposite to the first end, wherein the main body further comprises a lateral wall disposed at the second end and circumferentially extending around the main body; and a core part disposed at the second end of the main body and contained inside the lateral wall of the main body, wherein the core part has an end surface for pressing against at least an end surface of one of the work pieces when the rivet is being operated to rivet the work pieces, to allow materials of the work pieces flow outwardly of the core part. An accommodation space is formed between the core part and the lateral wall to receive materials of the work pieces flowing into the space and deform outwardly at least a portion of the lateral wall of the main body.
The present rivet invention has a main body comprising a first end and a second end opposite to the first end, wherein the main body further comprises a lateral wall disposed at the second end and circumferentially extending around the main body; and a core part disposed at the second end of the main body and contained inside the lateral wall of the main body, wherein the core part has an end surface for pressing against at least an end surface of one of the work pieces when the rivet is being operated to rivet the work pieces, to allow materials of the work pieces flow outwardly of the core part. An accommodation space is formed between the core part and the lateral wall to receive materials of the work pieces flowing into the space and deform outwardly at least a portion of the lateral wall of the main body.
A tooling system has means for applying a vacuum to hold the fastener at the working end of the tool. A cavity in a hollow pusher pin has lateral ports for exclusively providing a airway between the vacuum source and the fastener. In other embodiments of the invention the pusher pin has fastener-gripping jaws in the form of balls moveable within lateral passageways in the pusher pin open into the cavity. The balls are biased inwardly against the fastener by an outer elastic band on the tool body which encircles the pusher pin. When adapted for installing magnetic-release type fasteners, the bottom end of the pusher pin is of reduced diameter for insertion into a magnetic release fastener. The fastener-receiving panel is supported by an anvil having a magnet whereby the fastener is released from the pusher pin as the fastener is pressed into the panel.
A fastener for thin panels has a shank with a deformable collar which works in conjunction with a configured mating panel to produce enhanced attachment forces, especially in the case of very thin panels. The mating panel is prepared with a round mounting hole with cross-cut openings or slots. The panel is stamped into a conical section in a preparatory step before installation to provide the fastener with snap-in engagement prior to final pressing. The fastener shank has an undercut located immediately below the collar which is snapped into the prepared hole. Once snapped in, a punch and flat anvil are used to press the deformable band of the fastener tightly against the prepared panel, capturing the panel rigidly between the deformable band and a base of the fastener. During pressing, the material of the fastener collar will also flow into the slots of the panel to prevent rotation.
A fastener for thin panels has a shank with a deformable collar which works in conjunction with a configured mating panel to produce enhanced attachment forces, especially in the case of very thin panels. The mating panel is prepared with a round mounting hole with cross-cut openings or slots. The panel is stamped into a conical section in a preparatory step before installation to provide the fastener with snap-in engagement prior to final pressing. The fastener shank has an undercut located immediately below the collar which is snapped into the prepared hole. Once snapped in, a punch and flat anvil are used to press the deformable band of the fastener tightly against the prepared panel, capturing the panel rigidly between the deformable band and a base of the fastener. During pressing, the material of the fastener collar will also flow into the slots of the panel to prevent rotation.
A tooling system has means for applying a vacuum to hold the fastener at the working end of the tool. A cavity in a hollow pusher pin has lateral ports for exclusively providing a airway between the vacuum source and the fastener. In other embodiments of the invention the pusher pin has fastener-gripping jaws in the form of balls moveable within lateral passageways in the pusher pin open into the cavity. The balls are biased inwardly against the fastener by an outer elastic band on the tool body which encircles the pusher pin. When adapted for installing magnetic-release type fasteners, the bottom end of the pusher pin is of reduced diameter for insertion into a magnetic release fastener. The fastener-receiving panel is supported by an anvil having a magnet whereby the fastener is released from the pusher pin as the fastener is pressed into the panel.
A tooling system has means for applying a vacuum to hold the fastener at the working end of the tool. A cavity in a hollow pusher pin has lateral ports for exclusively providing a airway between the vacuum source and the fastener. In other embodiments of the invention the pusher pin has fastener-gripping jaws in the form of balls moveable within lateral passageways in the pusher pin open into the cavity. The balls are biased inwardly against the fastener by an outer elastic band on the tool body which encircles the pusher pin. When adapted for installing magnetic-release type fasteners, the bottom end of the pusher pin is of reduced diameter for insertion into a magnetic release fastener. The fastener-receiving panel is supported by an anvil having a magnet whereby the fastener is released from the pusher pin as the fastener is pressed into the panel.
B23P 19/00 - Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
B23P 19/06 - Screw or nut setting or loosening machines
B21J 15/32 - Devices for inserting or holding rivets in position with or without feeding arrangements
A clinch nut has a flange with additional clinch features. The nut construction includes rectangular torque-lugs radially spanning the bottom surface of the nut flange. Each lug has a displacer and an undercut. When assembled to a panel the mating panel has a star-shaped hole comprised of a central round mounting hole in addition to a number of apertures/openings that are aligned with the lugs of the nut. In one embodiment a hexagonal nut with six side flats has a flange with six torque lugs underneath the nut flange which are pointed orthogonally to the nut flats. This construction is employed in conjunction with a receiving panel or plate having a central circular opening surrounded by apertures in alignment with the nut lugs. Both the nut shank and each of the lugs clinch into the panel.
An insert for the attachment of objects to composite or plastic panels consists of two parts, a retainer and an insert. The retainer has a through-hole and knurls on its perimeter for gripping the walls of a receiving hole in the composite or plastic panel. The insert has multiple self-clinching features at increasing diameters which when inserted into the retainer rigidly attach it to the retainer. The panel is rigidly clamped between opposite sides of the panel by an enlarged head of the retainer and an opposing flange on the insert. The self-clinching features of different diameter permit the device to be used with panels of different thickness and allow a large tolerance range. A plain or threaded stud can be substituted for the threaded hole of the insert. Both the retainer and the insert can be metallic.
An insert for the attachment of objects to composite or plastic panels consists of two parts, a retainer and an insert. The retainer has a through-hole and knurls on its perimeter for gripping the walls of a receiving hole in the composite or plastic panel. The insert has multiple self-clinching features at increasing diameters which when inserted into the retainer rigidly attach it to the retainer. The panel is rigidly clamped between opposite sides of the panel by an enlarged head of the retainer and an opposing flange on the insert. The self-clinching features of different diameter permit the device to be used with panels of different thickness and allow a large tolerance range. A plain or threaded stud can be substituted for the threaded hole of the insert. Both the retainer and the insert can be metallic.
A press-in fastener has from top to bottom: a head, a clinch feature, and a spiral, knurled shank. The fastener can hold two parts together by first clinching with a first metal panel, and then being pressed into a hole in a second, less ductile panel having a uniform interference between the knurled fastener shank and the hole. The knurled shank has a helix configuration that allows for use in non-ductile materials and eliminates the need for tapered holes and screws for applications that do not require disassembly.
A clinch-in fastener with a cylindrical body having a top, a bottom, sides and an axial internal bore. The fastener has a single shank at the bottom end of the body having a top surface orthogonal to the bore and a chamfer tapering to the bottom of the body. The top surface of the shank is adapted for receiving the cold flow of material surrounding a receiving hole of a workpiece. The shank may have a plurality of notches in its outermost edge that extend through both the top surface of the shank and the chamfer. The bore of the fastener extends completely through the fastener body from top to bottom and may be threaded. A fastener installation system having a tool with means for affixation to a rotary and vertically reciprocal element of an industrial machine. The tip of the tool has a distal end face with at least one arcuate displacer adapted for deforming a workpiece as the tool rotates and is pressed against the workpiece. A bore within the tip holds a fastener installed by the tool. The displacer is vertically and radially tapered along an arcuate ridge centered about the axial bore. The width of the displacer is also tapered to a point.
F16B 37/06 - Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
B23P 19/06 - Screw or nut setting or loosening machines
B21D 39/03 - Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
Punch press tooling solves the problem of accurately and efficiently assembling an object in a retainer. In particular, when the retained object is a magnet, proper retainer/magnet alignment and accurate polarity marking on the retainer is achieved. During installation, a pre-assembly of the retainer and magnet is captured between a punch and a push-out pin. As the magnet closely approaches an anvil, opposite poles of the magnet and a magnetic stop attract each other so that the magnet rotates into alignment with the anvil marking bosses before a lip on the retainer is crimped. As a result, polarity marks are imprinted on the top of the lip that correspond to the magnetic poles of the magnet. The same process can be used with other non-magnet objects with any type of markings.
B21D 19/08 - Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
B21D 19/10 - Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws working inwardly
B25B 27/20 - Hand tools or bench devices, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same inserting or withdrawing split pins or circlips
A floating fastener comprises a retainer and a captive nut held within a cavity of the retainer. The nut is star-shaped with four points spaced equally apart and with four valleys on the periphery of the nut between the points creating the overall star-shape of the nut. Likewise, the cavity in the retainer corresponds to the shape and contour of the nut but sized so that there is a substantial gap between them. Permissible lateral float of the nut can be maximized by employing a particular angularity of the sides of the valleys in relation to other dimensions of the fastener.
A floating fastener comprises a retainer and a captive nut held within a cavity of the retainer. The nut is star-shaped with four points spaced equally apart and with four valleys on the periphery of the nut between the points creating the overall star-shape of the nut. Likewise, the cavity in the retainer corresponds to the shape and contour of the nut but sized so that there is a substantial gap between them. Permissible lateral float of the nut can be maximized by employing a particular angularity of the sides of the valleys in relation to other dimensions of the fastener.
A fastener is installed by applying an axial pressing force onto a mating component such as a round pin or a square tab. The fastener includes spring arms formed by bent tabs which deflect when pressed onto and grip the pin or other mating component between jaws of the arms making the fastener resistant to being pulled off. Downward facing fingers located around the periphery of the fastener flex when they come into contact with another portion of the mating component. This creates a residual clamp load between the fastener and the component. The fastener can easily be removed using a tool similar to snap ring pliers or needle nose pliers. Two holes on opposite sides of the fastener allow the part to be squeezed and deformed into an oval shape. This action disengages the arms and allows the fastener to slide off the mating component without resistance.
F16B 21/06 - Releasable fastening devices with snap action
F16B 21/07 - Releasable fastening devices with snap action in which the socket has a resilient part
F16B 21/10 - Means without screw-thread for preventing relative axial movement of a pin, spigot, shaft, or the like and a member surrounding it; Stud-and-socket releasable fastenings without screw-thread by separate parts
F16B 21/20 - Means without screw-thread for preventing relative axial movement of a pin, spigot, shaft, or the like and a member surrounding it; Stud-and-socket releasable fastenings without screw-thread by separate parts for bolts or shafts without holes, grooves, or notches for locking members
F16B 39/10 - Locking of screws, bolts, or nuts in which the locking takes place after screwing down by a plate or ring immovable with regard to the bolt or object
A fastener is installed by applying an axial pressing force onto a mating component such as a round pin or a square tab. The fastener includes spring arms formed by bent tabs which deflect when pressed onto and grip the pin or other mating component between jaws of the arms making the fastener resistant to being pulled off. Downward facing fingers located around the periphery of the fastener flex when they come into contact with another portion of the mating component. This creates a residual clamp load between the fastener and the component. The fastener can easily be removed using a tool similar to snap ring pliers or needle nose pliers. Two holes on opposite sides of the fastener allow the part to be squeezed and deformed into an oval shape. This action disengages the arms and allows the fastener to slide off the mating component without resistance.
F16B 21/06 - Releasable fastening devices with snap action
F16B 21/07 - Releasable fastening devices with snap action in which the socket has a resilient part
F16B 21/10 - Means without screw-thread for preventing relative axial movement of a pin, spigot, shaft, or the like and a member surrounding it; Stud-and-socket releasable fastenings without screw-thread by separate parts
F16B 21/20 - Means without screw-thread for preventing relative axial movement of a pin, spigot, shaft, or the like and a member surrounding it; Stud-and-socket releasable fastenings without screw-thread by separate parts for bolts or shafts without holes, grooves, or notches for locking members
F16B 39/10 - Locking of screws, bolts, or nuts in which the locking takes place after screwing down by a plate or ring immovable with regard to the bolt or object
A press-in fastener incorporates a compound wave pattern into the shank knurl. The knurl is generally aligned vertically but instead of a straight uniform knurl pattern, the rows of knurls have an undulating curved shape that alternates from a narrow to a wider cross- section as they transverse axially along the length of the pin shank. The knurls are arranged in straight or serpentine longitudinal rows equally spaced around a circumference of the shank. At least one of the rows has a wavy cross-sectional profile in a radial plane containing the longitudinal axis wherein said profile consists of a series of contiguous alternating crests and valleys. The compound wavy configuration of the knurls yields a number of benefits without adversely affecting the manufacturing process. The knurl configuration also reduces the installation force and disruption of the host material while maintaining a better lock on the host material.
F16B 13/02 - Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose in one piece with protrusions or ridges on the shaft
F16B 13/04 - Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
F16B 21/08 - Releasable fastening devices with snap action in which the stud, pin, or spigot has a resilient part
A press-in fastener incorporates a compound wave pattern into the shank knurl. The knurl is generally aligned vertically but instead of a straight uniform knurl pattern, the rows of knurls have an undulating curved shape that alternates from a narrow to a wider cross-section as they transverse axially along the length of the pin shank. The knurls are arranged in straight or serpentine longitudinal rows equally spaced around a circumference of the shank. At least one of the rows has a wavy cross-sectional profile in a radial plane containing the longitudinal axis wherein said profile consists of a series of contiguous alternating crests and valleys. The compound wavy configuration of the knurls yields a number of benefits without adversely affecting the manufacturing process. The knurl configuration also reduces the installation force and disruption of the host material while maintaining a better lock on the host material.
F16B 13/02 - Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose in one piece with protrusions or ridges on the shaft
F16B 4/00 - Shrinkage connection, e.g. assembled with the parts at different temperature; Force fits; Non-releasable friction-grip fastenings
An insert for connecting to a receiving structure having at least two parallel members includes having a first end and a second end opposite to the first end; a first spline disposed at the first end of the cylinder, wherein the first spline is arranged circumferentially on an outer surface of the cylinder; and an interlocking clinch disposed at the second end of the cylinder and circumferentially around the cylinder; wherein the first spline and the interlocking clinch are respectively fastened to two parallel members of the structure, and at least one of the first and second ends of the cylinder is fastened to a fitting member through a connecting member. The first spline can be fitted to one member of the structure with interference, and the interlocking clinch is self-fastened with another member of the structure due to material flow.
F16B 4/00 - Shrinkage connection, e.g. assembled with the parts at different temperature; Force fits; Non-releasable friction-grip fastenings
F16B 37/12 - Nuts or like thread-engaging members with thread-engaging surfaces formed by inserted coil-springs, discs, or the like; Independent pieces of wound wire used as nuts; Threaded inserts for holes
A two-part fastener with an insert and a compression sleeve. The insert is an internally-threaded fastener intended to be installed into a hole of a very hard panel. The insert itself is relatively hard with a knurled outer barrel portion and a flange at the bottom. A compression sleeve is made of relatively soft material and is preassembled around the barrel of the insert by friction fit. Upon installation into a panel with a blind hole having parallel sides, the compression sleeve is pressed into the panel and deforms outwardly between the insert and the side wall of the hole. Friction between the compression sleeve and the wall of the hole prevents torque out and pull out of the fastener from the panel.
F16B 13/00 - Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
F16B 13/06 - Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
F16B 13/12 - Separate metal dowel sleeves fastened by inserting the screw, nail, or the like
A two-part fastener with an insert and a compression sleeve. The insert is an internally-threaded fastener intended to be installed into a hole of a very hard panel. The insert itself is relatively hard with a knurled outer barrel portion and a flange at the bottom. A compression sleeve is made of relatively soft material and is preassembled around the barrel of the insert by friction fit. Upon installation into a panel with a blind hole having parallel sides, the compression sleeve is pressed into the panel and deforms outwardly between the insert and the side wall of the hole. Friction between the compression sleeve and the wall of the hole prevents torque out and pull out of the fastener from the panel.
F16B 13/00 - Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
F16B 13/06 - Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
F16B 13/12 - Separate metal dowel sleeves fastened by inserting the screw, nail, or the like
A two-part fastener with an insert and a compression sleeve. The insert is an internally-threaded fastener intended to be installed into a hole of a very hard panel. The insert itself is relatively hard with a knurled outer barrel portion and a flange at the bottom. A compression sleeve is made of relatively soft material and is preassembled around the barrel of the insert by friction fit. Upon installation into a panel with a blind hole having parallel sides, the compression sleeve is pressed into the panel and deforms outwardly between the insert and the side wall of the hole. Friction between the compression sleeve and the wall of the hole prevents torque out and pull out of the fastener from the panel.
F16B 5/02 - Joining sheets or plates to one another or to strips or bars parallel to them by means of fastening members using screw-thread
F16B 39/284 - Locking by means of elastic deformation
F16B 37/04 - Devices for fastening nuts to surfaces, e.g. sheets, plates
F16B 37/12 - Nuts or like thread-engaging members with thread-engaging surfaces formed by inserted coil-springs, discs, or the like; Independent pieces of wound wire used as nuts; Threaded inserts for holes
A self-piercing fastener having a planar base plate with a top, a bottom, and a peripheral edge. A plurality of prongs are fixed to the peripheral edge and extend downward past the bottom of the baseplate. Each of the prongs has a central axis and an arrowhead-shaped barb fixed to a distal end. Each barb has opposed front edges extending from the tip, and opposed back edges oriented at a reverse acute angle relative to the central axis of the prong. Each barb is adapted to fixedly embed in the interior of a panel to which the fastener is affixed.
F16B 5/01 - Joining sheets or plates to one another or to strips or bars parallel to them by means of fastening elements specially adapted for honeycomb panels
F16B 37/04 - Devices for fastening nuts to surfaces, e.g. sheets, plates
F16B 37/06 - Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
A self-piercing fastener having a planar base plate with a top, a bottom, and a peripheral edge. A plurality of prongs are fixed to the peripheral edge and extend downward past the bottom of the baseplate. Each of the prongs has a central axis and an arrowhead-shaped barb fixed to a distal end. Each barb has opposed front edges extending from the tip, and opposed back edges oriented at a reverse acute angle relative to the central axis of the prong. Each barb is adapted to fixedly embed in the interior of a panel to which the fastener is affixed.
F16B 37/04 - Devices for fastening nuts to surfaces, e.g. sheets, plates
F16B 15/06 - Nails; Staples with barbs, e.g. for metal parts; Drive screws
F16B 35/04 - Screw-bolts; Stay bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
A self-piercing fastener having a planar base plate with a top, a bottom, and a peripheral edge. A plurality of prongs are fixed to the peripheral edge and extend downward past the bottom of the baseplate. Each of the prongs has a central axis and an arrowhead-shaped barb fixed to a distal end. Each barb has opposed front edges extending from the tip, and opposed back edges oriented at a reverse acute angle relative to the central axis of the prong. Each barb is adapted to fixedly embed in the interior of a panel to which the fastener is affixed.
F16B 37/04 - Devices for fastening nuts to surfaces, e.g. sheets, plates
F16B 37/06 - Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
F16B 35/04 - Screw-bolts; Stay bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
A clinch-in fastener with a cylindrical body having a top, a bottom, sides and an axial internal bore. The fastener has a single shank at the bottom end of the body having a top surface orthogonal to the bore and a chamfer tapering to the bottom of the body. The top surface of the shank is adapted for receiving the cold flow of material surrounding a receiving hole of a workpiece. The shank may have a plurality of notches in its outermost edge that extend through both the top surface of the shank and the chamfer. The bore of the fastener extends completely through the fastener body from top to bottom and may be threaded. A fastener installation system having a tool with means for affixation to a rotary and vertically reciprocal element of an industrial machine. The tip of the tool has a distal end face with at least one arcuate displacer adapted for deforming a workpiece as the tool rotates and is pressed against the workpiece. A bore within the tip holds a fastener installed by the tool. The displacer is vertically and radially tapered along an arcuate ridge centered about the axial bore. The width of the displacer is also tapered to a point.
A clinch-in fastener with a cylindrical body having a top, a bottom, sides and an axial internal bore. The fastener has a single shank at the bottom end of the body having a top surface orthogonal to the bore and a chamfer tapering to the bottom of the body. The top surface of the shank is adapted for receiving the cold flow of material surrounding a receiving hole of a workpiece. The shank may have a plurality of notches in its outermost edge that extend through both the top surface of the shank and the chamfer. The bore of the fastener extends completely through the fastener body from top to bottom and may be threaded. A fastener installation system having a tool with means for affixation to a rotary and vertically reciprocal element of an industrial machine. The tip of the tool has a distal end face with at least one arcuate displacer adapted for deforming a workpiece as the tool rotates and is pressed against the workpiece. A bore within the tip holds a fastener installed by the tool. The displacer is vertically and radially tapered along an arcuate ridge centered about the axial bore. The width of the displacer is also tapered to a point.
A standoff fastener for attaching to a blind hole in a metal panel. The fastener has a substantially cylindrical body with a short shank that extends downwardly from the body into the hole. The shank has an inwardly extending collar with a first inwardly facing chamfer on the top and a second outwardly facing chamfer located on the bottom. The body has a shoulder at the bottom with a circular recess adjacent to and encircling the shank. The shank is radially divided into four equal segments which are separated by four radial slots. When the shank is spread outwardly by a center installation punch pressing against the first chamfer, the outer distal edge of the shank is pressed into the side wall of the hole, while an edge at the top of the second chamfer embeds into the end wall of the hole.
A cylindrical, internally -threaded part such as a nut or standoff that can be clinched into very -thin, sheet-metal panel even if the receiving hole is blind. The part has no integrally -formed displacer. The part is installed in an annular, blind hole by cold deforming and pushing material of the panel with a special installation tool into one or more recesses of the part. The tool has an annular cavity for receiving the fastener, an annular displacer surrounding the outer diameter of the annular cavity, and a center punch surrounded by the inner diameter of the cavity. One recess of the part may comprise an undercut in the outer periphery while another recess may comprise the groove of the internal threads. With a single stroke of the tool, panel material is simultaneously pushed into the undercut by the displacer and into the threads by the center punch to attach the part to the panel by clinching.
A unitary metal clinch fastener comprises a top most head and an inwardly tapered shoulder extending axially downwardly from and located immediately below the head. The shoulder has an outwardly -facing angled surface for deforming material of a metal panel into which the fastener is installed. An outwardly-flared shank is located below the shoulder. The shank has an upwardly -facing outer surface adapted to engage an edge of an installation hole in the panel. A neck of reduced diameter is located at a junction of the shank and the shoulder and is adapted to engage the edge of the installation hole to attach the fastener to the panel. The panel installation hole is centered in a conical recessed section of the panel and is convergently- angled downwardly with the edge of the hole abutting the upwardly -facing surface of the shank.
F16B 17/00 - Fastening means without screw-thread for connecting constructional elements or machine parts by a part of or on one member entering a hole in the other
F16B 35/04 - Screw-bolts; Stay bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
A clinching or swaging fastener for securely mounting a secondary article, such as a magnet, flush to a surrounding surface. An interference fit fastening feature holds the secondary article flush by using a deformable center knob on the end wall at the bottom of the retainer. Alignment features on the outer portion of the retainer body can fixture the magnet in a desired orientation. A radial flange surrounds the mouth of the bore which has a peripheral lip that extends upwardly. Clinch attachment means comprising a circular peripheral undercut is located on the outside of the body just below the flange for attaching the body to a host object. The article may have a peripheral chamfer at the top which receives the lip as it is deformed against the article to provide a flush alignment to the host object.
A clinching or swaging fastener for securely mounting a secondary article, such as a magnet, flush to a surrounding surface. An interference fit fastening feature holds the secondary article flush by using a deformable center knob on the end wall at the bottom of the retainer. Alignment features on the outer portion of the retainer body can fixture the magnet in a desired orientation. A radial flange surrounds the mouth of the bore which has a peripheral lip that extends upwardly. Clinch attachment means comprising a circular peripheral undercut is located on the outside of the body just below the flange for attaching the body to a host object. The article may have a peripheral chamfer at the top which receives the lip as it is deformed against the article to provide a flush alignment to the host object.
A fastener with a tapered head that frictionally mates with a tapered hole in a punched sheet. Frictional attachment is achieved with the fastener head remaining flush with the top of the panel. If a second panel of softer material is placed underneath against the backside of the first panel, in the same pressing step clinch features on the shank of the fastener attach to the second panel and attach the two sheets face-to-face. Attachment of the tapered head with the top panel exploits two different attachment phenomena: a locking taper and, depending on the choice of materials such as stainless steel, attachment by galling.
A fastener with a tapered head that frictionally mates with a tapered hole in a punched sheet. Frictional attachment is achieved with the fastener head remaining flush with the top of the panel. If a second panel of softer material is placed underneath against the backside of the first panel, in the same pressing step clinch features on the shank of the fastener attach to the second panel and attach the two sheets face-to-face. Attachment of the tapered head with the top panel exploits two different attachment phenomena: a locking taper and, depending on the choice of materials such as stainless steel, attachment by galling.
F16B 39/28 - Locking of screws, bolts, or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
A clamping snap-in fastener has a head with laterally-projecting, resilient arms that are curved and tapered toward their extremities. The arms are angled downwardly. Two resilient legs extend downwardly from the head. Each leg has a foot with a barb, an outwardly-projecting heel at the distal free end, and an undercut between the heel and the barb. The barb has a planar top surface that extends substantially perpendicular to the lengthwise axis of the leg, and a planar lower surface that extends inwardly from the upper surface toward the heel. The undercut lies between the lower surface and the heel at the bottom end of each leg. The fastener may be used to assemble two or more panels face-to- face through aligned apertures in the panels. After assembly, the panels are attached between the fastener head and the barbs with a residual clamp load applied by the deflection and resilience of the arms of the head.
A micro push-button assembly includes a pin which has a head, a shoulder, a neck and a chamfer at the distal end. Other elements include a spring, a washer, and a seal. This unitized push-button assembly has two opposing ends each with distinct functionalities. One end of the assembly includes means extending above the head for press-in captivation with an exterior button while the other end has means for press in captivation with a support member such as a wrist watch chassis. The assembly is provided to the watch manufacturer as a pre-assembled unit with the spring and seal already set onto the operating pin. The final press-fit assembly can be accomplished by hand.
A releasable adaptor is carried on the end of the pick-and-place vacuum nozzle which diffuses and restricts the air flow access of the nozzle to the top surface of an apertured fastener such as a nut while covering the fastener hole. The adaptor allows a standard nozzle to develop sufficient suction to lift the nut/adaptor combination and transport it to its desired target location such as a circuit board. There, the nut is released from the adaptor, which is then lifted by the nozzle and transported back to the supply location. This functionality is achieved by a unique adaptor air valve which the PNP equipment operates both mechanically and through its controlled application of negative air pressure applied to the adaptor by the nozzle.
An wearable electronic connection assembly including a circuit board connected to a garment. The connector of the assembly has, from top to bottom, a tack pin having a head, a shank, and clinch attachment means with an undercut for receiving the cold flow of metal. The head of the pin passes through a hole in the circuit board and is in contact with a top surf ace of the circuit board. The shank of the pin extends farther downward through a layer of fabric beneath the circuit board. A ring is disposed beneath the fabric layer into which the tack pin is clinched forcing material of the ring into the undercut. A wire is attached to the ring which is electrically connected to the circuit board through its connection to the electrically-conductive pin.
A clinch pin fastener comprises a lamination of layers bonded face-to-face. The individual layers can be formed by stamping or photo etching and can be bonded together by soldering, by using an adhesive or by ultrasonic bonding. The heads of the outermost layers may include a tab at the top which extends laterally at a 90-degree angle to the outermost layer. The fasteners are preferably constructed by bonding elongate strips to form a continuous string of fasteners joined side-to-side at integral, severable joints located between adjacent heads of the fasteners. The fasteners can be wound about a supply reel without a carrier and thereafter unwound from the reel as they are installed.
A panel fastener includes an internal spring clip held within a groove in the inside wall of the fastener cap, which engages a retainer to hold an extendable fastener at different positions on the retainer. The retainer can have contours and regions of reduced diameter that bear against the clip that establish positions of greater resistance to, or bias toward, movement of the fastener. The panel fastener makes it possible for the capped fastener to stay in different positions between its two end limit positions with reliable stability and without the need for any external sacrificial parts to meet the needs of pick-and-place automation. The fastener can be a screw or a non-threaded component.
A panel fastener includes a screw that is captivated to a ferrule and urged toward a retracted position by a spring which operates between the screw head and the ferrule. When the screw is in the retracted position, a collar of enlarged diameter on the screw occupies the area adjacent an internal annular captivation ring of the ferrule. The screw includes a flange that bears directly against the captivation ring providing a stop to prevent removal of the screw. The spring is preferably a coil spring that is operative against an outer flange of the ferrule.
F16B 5/02 - Joining sheets or plates to one another or to strips or bars parallel to them by means of fastening members using screw-thread
F16B 39/24 - Locking of screws, bolts, or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
A panel fastener includes a screw that is captivated to a ferrule and urged toward a retracted position by a spring which operates between the screw head and the ferrule. When the screw is in the retracted position, a collar of enlarged diameter on the screw occupies the area adjacent an internal annular captivation ring of the ferrule. The screw includes a flange that bears directly against the captivation ring providing a stop to prevent removal of the screw. The spring is preferably a coil spring that is operative against an outer flange of the ferrule.
F16B 39/24 - Locking of screws, bolts, or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
The present invention relates to headed push-in fasteners of the type produced by Penn Engineering & Manufacturing Corp. known as TackPins and TackScrews. More specifically it relates to a Tack Pin or a Tack Screw with a Belleville head that provides the functionality of a Bellville washer without needing a separate part. When installed, the compression of the Bellville shaped head will cause a permanent loading to be applied under the head of the fastener, essentially creating a clamping force to the members being attached.
