The present invention relates to: a vibration generator mounted in an electronic device such as a cellular phone, a PDA, or a portable game machine and generating vibrations so as to deliver a signal to a user through tactile sensation; and a manufacturing method therefor and, more specifically, to: a vibration generator for generating vibrations by using a magnetic repulsive force of a coil, which has received a magnetic force generated by a magnet, so as to make a vibrator perform periodic motion in the vertical direction; and a manufacturing method therefor, the vibration generator comprising: a case having a predetermined space formed therein and of which one surface is open; a cover for closing the open one surface of the case; a stator including a magnet fixedly provided upright from the center of the bottom of the case; a vibration unit including a weight linearly moving in a vibrating direction and a coil, which is provided inside the weight, is provided to be spaced from the magnet and to which an external electrical signal is applied; an elastic body elastically supporting the vibration unit in a state in which the elastic body is fixed to the case; and the like, wherein the elastic body includes, in one body, at least two spaced apart stationary parts and a connection part connecting the spaced apart stationary parts, the connection part is coupled to the vibration unit so as to have a relatively strong vibration force, and when the vibrator moves, the force generated in the upper direction is the same as the force generated in the lower direction.
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
The present invention relates an actuator including a housing, a drive unit installed in the housing and provided with a rotatable shaft, a bearing part installed in the housing to rotatably support the shaft at different positions, at least one bearing part included in the bearing part being fixed to the housing, and a gear unit accommodated in the housing, the gear unit being rotated about different axes rotational power transmitted thereto from the shaft.
A linear vibrator that transmits tactile signals to a user of a mobile phone, PDA, or a portable game console. The linear vibrator uses rubber or silicone rubber having lower elasticity as a material of an elastic body secured to a casing or a base for supporting an oscillator horizontally moving by an electromagnetic force relative to a facing stator, thereby lowering the frequency sensitivity due to a characteristic frequency; reducing various errors of parts and errors in part assembly, thus resulting in smaller deviations of characteristic frequencies between products from mass production; and significantly reducing production cost by using an elastic body made of rubber or silicon rubber instead of steel plate or wire, thereby efficiently producing a structure through a simple assembly process and reducing the manufacture facility cost and labor cost resulting in improved productivity.
H02K 33/16 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
The invention relates generally to a step actuator, in which a lead screw coupled with a screw thread formed in a nut member is installed in a rotor magnet and moves back and forth in an axial direction responding to a rotation of the rotor to transmit power in an axial direction. A cylindrical bearing for rotatably supporting the nut member is disposed at an upper part of the nut member and integrally formed therewith, to fundamentally remove a gap in the axial direction in the coupled area between the cylindrical bearing and the nut member, thereby significantly reducing the feeding error of a rotator in the axial direction when the lead screw moves back and forth in the axial direction, and reducing the number of parts to be assembled to lower the material cost and the labor cost for assembly.
H02K 7/06 - Means for converting reciprocating motion into rotary motion or vice versa
H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
Disclosed herein is a step motor. The step motor includes a casing, a stator disposed in the casing, with a coil being wound around the stator, a rotor disposed in the stator, having a rotor shaft that is rotatably supported at both ends of the casing, and rotated by interaction with the stator, a rotary sensing unit provided in the casing to detect a rotation of the rotor, and a coil connector formed on an outer surface of the stator, with an end of the coil being connected to the coil connector.
H02K 37/00 - Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
H02K 5/22 - Auxiliary parts of casings not covered by groups , e.g. shaped to form connection boxes or terminal boxes
H02K 11/00 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
H02K 37/14 - Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures
H02K 3/52 - Fastening salient pole windings or connections thereto
H02K 11/215 - Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
The present invention provides an actuator comprising: a stator; a rotor extending through the stator and rotating while interacting with the stator as external power is provided; a case surrounding the stator while allowing a shaft of the rotor to protrude therefrom; and at least one rotation angle restraint part which is installed on an outer side of the case and restrains a rotation angle of the rotor. Further, the present invention provides an electronic device having the actuator.
B60Q 1/00 - Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
B60Q 1/076 - Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle by electric means
The present invention relates to a PM (Pulse-Width Modulation) type step motor used for conveying an optical pickup lens of media devices or a mobile camera lens. In detail, the present invention relates to a step motor that is composed of a stator, a rotor rotating by interacting with the stator, a lead screw combined with the rotor and rotating with the rotation of the rotor, and a bearing supporting the lead screw and which can perform precise conveying because it can perform fine adjustment and of which the operation state can be precisely sensed by having a position correcting unit that moves the lead screw to a desired position by finely moving it while contracting and stretching and a rotation sensing unit that is disposed at a side of the rotor or a rotary member rotating with the rotor and senses rotation of the rotor.
The present invention relates to a step actuator having a structure in which a lead screw is coupled with a screw thread formed in a nut member that is installed inside a rotor magnet, wherein the lead screw moves forwards or backwards in an axial direction according to the rotation of the rotor, and wherein power is transmitted in the axial direction. More specifically, a cylindrical bearing that allows the nut member to rotate is located in the upper part of the nut member and is formed as part of the nut member. Therefore, gaps in the axial direction in the coupled area between the cylindrical bearing and the nut member can be fundamentally prevented. The translation error of the step actuator can be significantly reduced since the rotor moves in the axial direction when the lead screw moves forwards or backwards in the axial direction. In addition, the number of parts to be assembled is decreased, resulting in a reduction in the material cost and the labour cost for assembly.
The invention relates to a vibration generator which is used in devices, such as mobile phones, requiring a vibration mode. More specifically, the invention relates to a horizontal vibration type vibration generator which includes a casing that is open on one surface thereof, a vibration part having a weight provided inside the casing, and a spring mounted inside the casing, and which produces horizontal vibration by using the phenomenon of resonance which occurs by causing oscillation in an electromagnetic force having the same frequency as the intrinsic vibration frequency of the spring, and which solves the problem of a reduction in the life span of the vibration generator due to mechanical friction as seen in existing mechanical vibration generators, and generates a large vibration force despite having a thin construction unachievable in a vertical moving type vibration generator. The invention also relates to a production method of the vibration generator.
H02K 35/02 - Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems
H02K 33/16 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
H02K 15/00 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
The present invention relates to a structure for mounting a PCB (Printed Circuit Board, for applying an external electrical signal) and a plate on a bearing housing in a motor such as a brushless motor or an outer rotor motor that has the plate installed to support and fix the motor on the PCB and external devices or external apparatuses, and more particularly, to a PCB and plate mounting structure for a motor, which has good assemblability, interchangeability of assembling equipment, and simplicity, by virtue of forming at least one rivet portion projecting on a surface of the bearing housing coupled to the PCB, forming at least one rivet portion projecting on a surface of the bearing housing coupled to the plate, and attaching the PCB and the plate using a rivet and mounting same on the bearing housing.
The present invention pertains to a step actuator, wherein a motor section being formed of a stepping motor serves as a driving source, a pinion gear is axially coupled with a rotation shaft of the motor section, a gear section is coupled with the pinion gear, and the torque of the motor section is transmitted by an output shaft which is coupled with the gear section. More specifically, the top surface of the motor section has a motor cover mounted thereon which supports the motor rotation shaft and a stopper which restrains the rotation of the gear rotation shaft. Therefore, initial positional accuracy may be improved and the increase of errors caused by the accumulated tolerance of assembly may be minimized when compared with existing step actuators in which a stopper is mounted to a case which is an injection molded component. In addition, the manufacturing and maintaining of components in the process of mass production become simple, thereby saving product manufacturing costs.
The present invention relates to a vibration generator which is used in devices such as mobile phones in which vibration is required. More specifically, the invention relates to a horizontally vibrating type of vibration generator which comprises, inter alia, a casing that is open on one side thereof, a vibration part comprising a weight provided inside the casing, and a spring provided secured inside the casing, and which produces horizontal vibration by using the phenomenon of resonance which occurs on causing oscillation in an electromagnetic force having the same frequency as the intrinsic vibration frequency of the spring, and the vibration generator alleviates the problem of reduced life due to mechanical friction in existing mechanical vibration generators, and has a large vibrational force despite having a thin-form construction unachievable in a vertically moving type of vibration generator. The invention also relates to a production method for the vibration generator.
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
H02K 15/00 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
Disclosed herein is a PM type step motor used to move a camera or an optical pickup lens of media related equipment. The step motor has a stator unit including first and second stators which butt against and are coupled to each other and each have a bobbin and a yoke attached thereto. Terminal blocks of the first and second stators are spaced apart from each other when the first and second stators are coupled to each other, thus allowing an automatic winding operation using winding equipment to be easily performed. The step motor includes a bushing which has in a central portion thereof a through hole through which a rotating shaft passes and is a two-stage structure having a small outer diameter part and a large outer diameter part, thus allowing the stator unit, the rotating shaft and a casing unit to easily be arranged coaxially.
Disclosed herein is a PM type step motor used to move a camera or an optical pickup lens of media related equipment. In the step motor, coupling holes are formed in the central portions of both sides of a casing unit thereof, a bushing is press-fitted or inserted into an associated coupling hole, and a ring member is press-fitted over the outer circumference of the bushing protruding outward from the coupling hole such that the bushing is secured to the casing unit, thus preventing the bushing from becoming separated from the casing unit. The step motor can be freely applied to peripheral device modules of various outer diameters using the ring member.
Disclosed is a structure of a casing of a small stepping motor having an outer diameter of 8 mm or less, in which yoke teeth are integrally formed on the inner surface of the casing, and the thickness of the outer wall of the casing is different from the thickness of each of the yoke teeth. The casing of a small stepping motor includes yoke teeth integrally formed on an inner surface of the casing, in which a thickness of an outer wall of the casing is different from a thickness of the yoke tooth.
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