An aspect of the present disclosure provides a hydraulic-pneumatic apparatus including a cylinder assembly including a spindle with a hollow inside, a hollow cylinder portion, and a piston rod capable of reciprocating inside the hollow cylinder portion, and inserted through an inlet of the spindle, a flange portion surrounding the piston rod, disposed on an inlet side of the cylinder portion, and contacting an inner circumferential surface of the spindle, and a sealant disposed between the flange portion and one surface of the bent portion facing the flange portion, wherein a bent portion is formed on an inlet of the spindle to surround the flange portion.
F16F 9/06 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
F16F 9/34 - Special valve constructionsShape or construction of throttling passages
F16F 9/36 - Special sealings, including sealings or guides for piston-rods
A rotary cylinder according to one embodiment of the present invention comprises: a hollow spindle that rotates; a spring disposed inside the spindle; and a cam, which is coupled to the spindle and rotates together with the spindle, wherein, when the spindle rotates in one direction, the spring connected to the cam is compressed and, when the spring is stretched, the spindle coupled to the cam rotates in the direction opposite to the one direction.
A rotary cylinder according to an embodiment of the present invention comprises: a hollow rotary spindle; and a spindle guide formed so as to surround the outer side of the spindle, wherein a protrusion portion is on the outer circumferential side of the spindle, and the protrusion portion is seated on the upper portion of the spindle guide.
A47C 3/30 - Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
According to an aspect of the present disclosure, a multi-step height adjuster includes a base tube portion including a first base tube and a second base tube vertically reciprocating inside the first base tube; a spindle portion including a first spindle installed inside the first base tube to vertically reciprocate and a second spindle installed inside the second base tube to vertically reciprocate; and an adjustment portion installed in the spindle portion to transmit power to the spindle portion, wherein the first spindle and the second base tube are integrally moved.
B66F 3/28 - Adaptations or arrangements of pistons telescopic
A47B 9/04 - Tables with tops of variable height with vertical spindle
A47B 9/10 - Tables with tops of variable height with vertically-acting fluid cylinder
A47B 21/02 - Tables or desks specially adapted for use at individual computer workstations, e.g. for word processing or other manual data entryTables or desks specially adapted for typingAuxiliary devices for attachment to such tables or desks characterised by adjustable parts, e.g. universally adjustable leaves, arm rests, wrist supports or mouse platforms the parts being vertically-adjustable only
A47C 3/24 - Chairs or stools with vertically-adjustable seats with vertical spindle
A47C 3/30 - Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
B66F 3/24 - Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
F16F 9/02 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only
F16F 9/32 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium Details
An aspect of the present invention provides a hydraulic-pneumatic apparatus in which are formed: a cylinder assembly, which includes an inner hollow spindle portion, a hollow cylinder portion, and a piston rod capable of reciprocating inside the cylinder portion, and is inserted through an inlet of the spindle portion; a flange portion surrounding the piston rod, disposed at a side of the inlet and being in contact with the inner circumferential surface of the spindle portion; and a bent portion bent at the inlet of the spindle portion while surrounding the flange portion, wherein the hydraulic-pneumatic apparatus comprises a sealing agent disposed between the flange portion and one surface of the bent portion facing the flange portion.
A method of manufacturing a gas cylinder according to an embodiment of the present invention may include applying a sealant to at least a portion of inner surface of a hollow spindle; inserting a cylinder assembly contacting the inner surface of the spindle through an inlet of the spindle and forming a sealant film on an inner surface of the spindle by frictionally applying the sealant to the inner surface of the spindle; and hardening the sealant film to form a cured film cylinder in contact with the inner surface of the spindle.
F16F 9/36 - Special sealings, including sealings or guides for piston-rods
F16F 9/32 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium Details
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
F16F 9/02 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only
One aspect of the present invention provides a length adjustment apparatus comprising: a cylinder part which is hollow inside and accommodates a filler; a length adjusting part which shares a central axis with the cylinder part and is connected to the cylinder part; a valve part which passes through the length adjusting part and can move within the length adjusting part; and an elastic support part which is installed between the length adjusting part and the valve part and has an elastic restoring force in the longitudinal direction of the valve part.
One aspect of the present invention provides a multi-step height adjuster comprising: a base tube part having a first base tube, and a second base tube capable of vertically reciprocating in the first base tube; a spindle part having a first spindle, which is provided in the first base tube so as to be capable of vertically reciprocating in the first base tube, and a second spindle, which is provided in the second base tube so as to be capable of vertically reciprocating in the second base tube; and an adjusting part which is provided at the spindle part and which transmits power to the spindle part, wherein the first spindle and the second base tube integrally move together.
A hydraulic-pneumatic device according to one embodiment of the present invention comprises: an outer cylinder; an inner cylinder; a piston which has a fixed mode and a motion mode and can thus reciprocate relative to the inner cylinder in the motion mode; and a free piston which divides a space between the outer cylinder and the inner cylinder into a first chamber and a second chamber and can reciprocate in the space between the outer cylinder and the inner cylinder, wherein a third chamber, namely an inner space of the inner cylinder, is filled with a liquid and when the piston moves toward one end of the inner cylinder in the motion mode, at least some of the liquid received in the third chamber moves to the first chamber or the second chamber.
F16F 9/06 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
A47C 7/00 - Parts, details, or accessories of chairs or stools
A method for manufacturing a gas cylinder according to an embodiment of the present invention comprises the steps of: applying a sealant to at least a part of the inner surface of a hollow spindle; inserting, into an inlet of the spindle, a cylinder assembly that comes into contact with the inner surface of the spindle so as to frictionally apply the sealant and form a sealant film on the inner surface of the spindle; and curing the sealant film so as to form a cured film cylinder that is in contact with the inner surface of the spindle.
F16F 9/36 - Special sealings, including sealings or guides for piston-rods
F16F 9/02 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only
A height-adjustable table is disclosed. The present invention comprises: a base; an upper plate of which the height is changed with respect to the base; a first connecting member connecting the base and the upper plate, and having a first moving end moving along one of the base and the upper plate; a second connecting member intersecting with the first connecting member so as to connect the base and the upper plate, and having a second moving end moving along the other of the base and the upper plate; a height adjusting device for connecting the first connecting member and the second connecting member; a guide roller provided at the first moving end and/or the second moving end; and a guide rail provided at the base or the upper plate so as to come in contact with the guide roller.
The present invention relates to a height-adjustable sink. According to one aspect, the height-adjustable sink comprises: a main body; an upper plate provided at the upper part of the main body; one or more connecting members, which are connected to the main body and the upper plate, for adjusting the height of the upper plate with respect to the main body; and a holding means for holding the height of the upper plate in a state in which the height of the upper plate has been adjusted.
A47B 77/06 - Provision for particular uses of compartments or other parts for incorporating sinks, with or without draining boards, splash-backs, or the like
A height-adjustable desk includes a base, a top board, a link mechanism, a height-adjusting member, and an operating member. The top board is configured to be vertically elevated with respect to the base. The link mechanism is disposed between the base and the top board so as to support the top board such that the top board may be elevated, the link mechanism including a plurality of link members. The height-adjusting member is formed to be extendable at a desired length and determining a height of the top board with respect to the base according to a length thereof. The operating member fixes the height-adjusting member so that the height-adjusting member maintains the desired length.
A47B 9/16 - Tables with tops of variable height with means for, or adapted for, inclining the legs of the table for varying the height of the top, e.g. with adjustable cross legs
A47B 9/10 - Tables with tops of variable height with vertically-acting fluid cylinder
A47B 9/18 - Tables with tops of variable height with additional top or additional legs for varying the height of the top
A47B 21/02 - Tables or desks specially adapted for use at individual computer workstations, e.g. for word processing or other manual data entryTables or desks specially adapted for typingAuxiliary devices for attachment to such tables or desks characterised by adjustable parts, e.g. universally adjustable leaves, arm rests, wrist supports or mouse platforms the parts being vertically-adjustable only
A47B 9/02 - Tables with tops of variable height with balancing device, e.g. by spring, by weight
A gas cylinder includes: a base tube including a cavity; a spindle inserted into the cavity and performing a reciprocating motion in a longitudinal direction of the base tube; a cylinder mounted in the spindle and charged with gas; a piston dividing the cylinder into an upper chamber and a lower chamber; a valve portion sealing an upper portion of the cylinder and including a pipe holder having a cavity through which the gas is introduced; a flow prevention portion inserted into the spindle and having an inner surface contacting a surface of the spindle; and a spindle guide disposed between the base tube and the spindle and mounted to include at least a portion of the flow prevention portion.
F16F 9/36 - Special sealings, including sealings or guides for piston-rods
A47C 3/30 - Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
A47C 3/24 - Chairs or stools with vertically-adjustable seats with vertical spindle
F16F 9/02 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only
F16F 9/32 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium Details
F16F 9/58 - Stroke limiting stops, e.g. arranged on the piston rod outside the cylinder
Disclosed is a height-adjustable bed comprising: a base; a support frame disposed on the upper surface of the base; a mattress stably placed on the upper surface of the support frame; and a height adjustment means connected to the support frame and the base to adjust the height and slope of the support frame, wherein the height adjustment means comprises a gas spring or a spring lever to manually adjust the height of the support frame.
Disclosed is a height-adjustable chair comprising: a seat board formed to allow a user to sit thereon; a base frame formed to be a predetermined distance from the seat board; at least one frame for connecting the base frame and the seat board; and at least one height adjustment member formed to connect the base frame or the frame with the seat board and have a variable length, so as to adjust the distance between the seat board and the base frame.
Disclosed is a height-adjustable rehabilitation device comprising: a base plate; a pair of rehabilitation rods formed to be a predetermined distance from the base plate and parallel to each other; and at least one first height adjustment member formed to connect the base plate and the pair of rehabilitation rods and have a variable length, wherein whether the length of the height adjustment member can be adjusted is controlled according to whether a control member is pressed.
The present invention comprises: a base; an upper plate provided so as to be vertically lifted and lowered with respect to the base; a link device disposed between the base and the upper plate so as to support the upper plate such that the upper plate is lifted and lowered, and including a plurality of link members; a height-adjusting means formed to be extendable at desired lengths, and determining the height of the upper plate with respect to the base according to the length thereof; and an operating means for fixing the height-adjusting means such that the height-adjusting means maintains the desired length.
A47B 9/18 - Tables with tops of variable height with additional top or additional legs for varying the height of the top
A47B 17/02 - Writing-tables with vertically-adjustable parts
A47B 21/02 - Tables or desks specially adapted for use at individual computer workstations, e.g. for word processing or other manual data entryTables or desks specially adapted for typingAuxiliary devices for attachment to such tables or desks characterised by adjustable parts, e.g. universally adjustable leaves, arm rests, wrist supports or mouse platforms the parts being vertically-adjustable only
A47B 9/10 - Tables with tops of variable height with vertically-acting fluid cylinder
Disclosed is a gas cylinder. The present invention comprises: a base tube which has a hollow part; a spindle which is inserted into the hollow part and reciprocates in the lengthwise direction of the base tube; a cylinder which is installed on the inside of the spindle and has gas filled inside; a piston which divides the inside of the cylinder into an upper chamber and a lower chamber; a valve part which seals the upper end of the cylinder and is provided with a pipe holder having a hollow part allowing entry and exit of the gas; an outlet prevention part which is inserted into the spindle so that the inside surface of the outlet prevention part comes into contact with the surface of the spindle; and a spindle guide which is arranged between the base tube and the spindle and is installed so as to include at least a part of the outlet prevention part.
A spindle motor, according to the present invention, comprises: a bearing housing; a rotary shaft which is rotatably supported by the bearing housing; a rotor which is fixed to the rotary shaft; a stator which is arranged on the inner surface of the rotor with a specific distance therebetween, and which is fixed to the outer circumferential surface of the bearing housing; and a chucking device, which is fixed to the rotary shaft, for fixing a disk, wherein the chucking device comprises a turntable, which is coupled to the rotary shaft and on which the disk is seated, an elevating member, which is arranged at an upper portion of the turntable so as to rise and fall vertically, for supporting the disk when the disk is seated on the table, a yoke member, which is fixed to the upper end of the rotary shaft, for supporting the elevating member so as to rise and fall and preventing the elevating member from separating, and an elastic force provision portion, which is integrally formed on the elevating member, for providing elastic force to the elevating member, thereby reducing the number of parts and simplifying the manufacturing process.
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
A spindle motor, according to the present invention, comprises: a bearing housing; a rotary shaft which is rotatably supported by the bearing housing; a turntable which is fixed to the rotary shaft so as to rotate with the rotary shaft, and on which a disk is seated; a rotor which is installed on a rotor installation portion that is integrally formed with the turntable; and a stator which is arranged on the inner surface of the rotor with a specific distance therebetween, and which is fixed to the outer circumferential surface of the bearing housing, thereby reducing the number of parts, reducing manufacturing cost, and reducing noise and vibration from the motor.
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
27.
INTEGRATED CHUCKING DEVICE AND SPINDLE MOTOR USING SAME
An integrated type chucking device of the present invention comprises: a body part fixed to a rotor housing; a floating prevention part which extends from the body part into a plurality of parts, and which comes in close contact with an inner surface of a disk so as to prevent the lateral movement of the disk; and a disk chuck which is formed at a certain interval from the floating prevention parts in the space between the floating prevention parts, and which elastically supports the disk. The present invention can reduce the number of components by integrating the body part, the floating prevention part, and the disk chuck through injection molding, and can simplify a manufacturing process as well as reduce manufacturing costs by assembling the chucking device in one process.
The present invention relates to a low-cost spindle motor that is capable of securing the verticality of a bearing and a rotation shaft which are assembled in a bearing housing and has a simple turntable structure. The spindle motor includes: a turntable on which a recording medium having a disk shape is attached or detached; a rotor including a rotor yoke on which a plurality of magnets are mounted, wherein the rotor yoke has a protrusion portion having an upper middle portion thereof on which a central portion of the turntable is coupled, and the rotational shaft is press-fitted into the center of the protrusion portion; a bearing housing formed of a resin, the bearing housing having a through hole in which the rotation shaft is inserted; a pair of bearings disposed at a distance from one another in the through hole in the bearing housing in order to rotatably support the rotation shaft; and a stator coupled to an outer diameter portion of the bearing housing so as to face the rotor, wherein the stator generates electromagnetic fields when a driving signal is applied, and thus rotates the rotor.
The present invention relates to a column unit for a chair, wherein the column unit for a chair is compact and can improve durability against lateral forces. The present invention relates to a column unit for a chair, in which the height thereof is controlled by upward and downward movements of a spindle assembly, wherein the column unit comprises: an outer pipe comprising an inclined portion of which the diameter gradually becomes larger as it approaches a front end thereof; an inner pipe which is inserted into the outer pipe to form a space portion between the inclined portion and the inner pipe; and a spindle guide which is inserted into the inner pipe to guide the upward and downward movements of the spindle assembly.
A47C 3/30 - Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
F16F 9/02 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only
30.
SPINDLE MOTOR HAVING AN ELECTROSTATIC DISCHARGE PATH
The present invention relates to a spindle motor having an electrostatic discharge (ESD) path capable of safely discharging electric charges, introduced to a rotary shaft from an external source, to the outside via a base plate in a structure in which a bearing housing is made of a resin and the base plate is insert-molded. The spindle motor of the present invention comprises: a rotor having, to the center of which one end of a rotary shaft is coupled; a bearing that supports the rotary shaft such that the rotary shaft is rotatable; a bearing housing which has a groove in which the bearing is received, and which is made of a resin; and a base plate, the inner periphery of which is embedded in the bearing housing. A portion of the base plate contacts the bearing such that the static electricity introduced from an external source can be discharged to the outside through the rotary shaft, bearing, and base plate.
The present invention relates to a spindle motor for high-speed rotation, in which a smooth circulation occurs with no oil-congested areas in an oil flow path formed within a bearing housing. Said spindle motor comprises: a rotor; a rotary shaft having one end that is coupled with said rotor; a sleeve bearing which rotatably supports an outer surface of said rotary shaft in the inner circumferential part thereof, has at least one concave groove for oil circulation along a lengthwise direction in the outer circumferential part thereof, and is made of oil-containing sintered metal; a bearing housing which has a first concave groove for accommodating said sleeve bearing and a second concave groove for supporting the other end of the rotary shaft in the central part of said first concave groove, wherein the bearing housing is made of resin; and a plurality of protruding portions which are radially protruded at certain intervals on said rotary shaft in order to form, on the bottom of first concave groove, a plurality of guide grooves through which oil passes, and in which a lower end of said sleeve bearing is mounted thereon.
The present invention relates to a gas cylinder. According to one aspect of the invention, the gas cylinder comprises: an outer cylinder; a spindle which is provided to the outer cylinder to allow vertical movement thereon; a cylinder which is positioned inside the spindle, and is isolated from the spindle; a piston unit, which includes a piston rod fixed to the outer cylinder, and a piston for dividing the inside of the cylinder into a plurality of chambers in connection with said piston rod; a connection channel which is formed between the spindle and the cylinder, and communicates said plurality of chambers; a valve body which is positioned inside the spindle, and has a channel for allowing a fluid filled inside the cylinder to flow therethrough; and a flow control unit which is movably equipped on the channel of the valve body, and reduces the flowing speed of the fluid that flows through the channel.
A47C 3/30 - Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
F16F 9/02 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only
33.
SPINDLE MOTOR AND INFORMATION STORAGE DEVICE INCLUDING THE SAME
Provided is a spindle motor for an optical disc drive, the spindle motor complementing loss of a function of automatically correcting a center of the spindle motor that may occur due to an excessive centrifugal force of an optical disc that is generated as the rotation speed of the spindle motor is increased. A conic outer circumferential surface of a slide cone closely contacts an inner circumferential surface of the optical disc so that a center of the optical disc and a rotational center of the spindle motor may be identical with each other. To this end, the slide cone is cup-shaped so that the slide cone may be vertically slid in the direction of the rotation shaft, and a cone yoke is installed to exert a force to push the slide cone upwards in an axial direction so that an attractive force between the yoke and a cone yoke that is a magnet or an attractive force between the cone yoke formed of a magnetic material and a clamp magnet may be used.
Provided is a gas cylinder, and more particularly, a gas cylinder for a chair that allows a user to select a height adjustable swivel chair function or a height adjustable non-swivel chair function as desired. The gas cylinder includes a spindle for performing an up and down reciprocating movement according to height adjustment; a cylinder mounted in the spindle and internally filled with a gas; a piston member for partitioning the inside of the cylinder into an upper part and a lower part; a valve member for sealing the upper part of the cylinder and for controlling an inflow and outflow of the gas filling the cylinder; a spindle guide to which at least a portion of the sleeve is inserted; and a tightening member for adjusting a separation distance between the sleeve and the spindle.
A cable operated gas cylinder comprises: a base tube; a spindle which is inserted at hollow part in said base tube; a cylinder which is mounted within said spindle; a piston dividing the gas-filled space within said cylinder into upper part and lower part; a pipe holder sealing airtight the upper part of said cylinder; a gas opening/closing pin which is mounted penetratingly through central part of said pipe holder and for controlling getting in and out of the gas filled within said cylinder; a release arm for controlling the opening/closing of said gas opening/closing pin; a cable for controlling turning of said release arm when being pulled by external force; and a taper holder which receives said release arm therein and rotationally intervenes within said spindle, wherein said release arm and said taper holder are capable of rotating together as said cable rotates.
