Abstract: A motor includes a brush configured to contact a commutator and a movement restricting structure configured to restrict a movement of the brush. The movement restricting structure has: a carbon holder for housing the brush while permitting a movement of the brush in the commutator radial direction; and a circumferentially restricting part for restricting a movement of the brush in the commutator circumferential direction. The circumferentially restricting part has a passing port formed by punching, through which the brush passes.

Abstract: A reverse rotation prevention mechanism is provided on a torque transmission path between an output shaft and a driving shaft of a motor, and includes: a relative rotation inhibition unit configured to inhibit rotation of a lock plate provided on the torque transmission path from rotating relative to an output pin when an external force in a rotational direction is exerted on the output shaft; and a lock plate side brake member configured to generate a braking force that prevents reverse rotation when an external force in the rotational direction is exerted on the output shaft, by causing a portion of the lock plate to be pressed. The relative rotation inhibition unit is provided in an area different from the lock plate side brake member.

Abstract: An armature includes a core having a plurality of teeth, which are radially formed with a rotation axis as the center, a plurality of coils where each coil is wound around each set of teeth containing at least two teeth. The plurality of coils have a plurality of inside coils placed on a rotation axis side of the teeth and a plurality of outside coils placed outside the inside coils. The plurality of inside coils are circularly arranged so that inside coils adjacent to each other are not wound around the same tooth. The plurality of outside coils are circularly arranged so that outside coils adjacent to each other are not wound around the same tooth. The outside coils are wound around a second set of combinations of teeth, which are different from a first set of combinations of teeth around which the inside coils are wound.

Abstract: An armature includes a core having a plurality of teeth, which are radially formed with a rotation axis as the center, a plurality of coils where each coil is wound around each set of teeth containing at least two teeth. The plurality of coils have a plurality of inside coils placed on a rotation axis side of the teeth and a plurality of outside coils placed outside the inside coils. The plurality of inside coils are circularly arranged so that inside coils adjacent to each other are not wound around the same tooth. The plurality of outside coils are circularly arranged so that outside coils adjacent to each other are not wound around the same tooth. The outside coils are wound around a second set of combinations of teeth, which are different from a first set of combinations of teeth around which the inside coils are wound.

Abstract: A motor includes a brush configured to contact a commutator and a movement restricting structure configured to restrict a movement of the brush. The movement restricting structure has: a carbon holder for housing the brush while permitting a movement of the brush in the commutator radial direction; and a circumferentially restricting part for restricting a movement of the brush in the commutator circumferential direction. The circumferentially restricting part has a passing port formed by punching, through which the brush passes.

Abstract: The present invention enables firm fixation between a motor casing and a casing lid at low cost through employment of a simple structure without need to use adhesive. A casing lid made of resin is fixedly fitted to an opening portion of a motor casing made of metal. Grooves or depressions are provided at the bottoms of a plurality of fixation portions provided on the casing lid at constant intervals in the circumference direction thereof. Bend portions at the opening portion of the motor casing are caused to bite into the grooves or depressions of the casing lid fitted into the opening portion of the motor casing, whereby the motor casing and the casing lid are fixed together.

Abstract: The present invention enables firm fixation between a motor casing and a casing lid at low cost through employment of a simple structure without need to use adhesive. A casing lid made of resin is fixedly fitted to an opening portion of a motor casing made of metal. Grooves or depressions are provided at the bottoms of a plurality of fixation portions provided on the casing lid at constant intervals in the circumference direction thereof. Bend portions at the opening portion of the motor casing are caused to bite into the grooves or depressions of the casing lid fitted into the opening portion of the motor casing, whereby the motor casing and the casing lid are fixed together.

Abstract: A resonance drive actuator includes a casing; an electromagnetic drive section supported in the interior of the casing; a plunger to be reciprocatively driven at least in a rotational direction or in an axial direction by the electromagnetic drive section; an output shaft on which the plunger is fixed; and a spring which acts between the output shaft and the casing. The actuator resonantly drives a load connected to an end of the output shaft. The spring is a plate spring which integrally includes a casing inner-surface abutment portion fixedly abutting the inner surface of the casing, an output-shaft abutment portion fixedly abutting an outer surface of the output shaft, and a connection portion having the form of a strip and connecting the output-shaft abutment portion and the casing inner-surface abutment portion. The plate spring is fixed to both of the inner surface of the casing, and the output shaft.

Abstract: Disclosed a structure for supporting a steering device including a steering shaft 9 adapted to transmit a steering force of a steering wheel to road wheels, relative to a vehicle body through an instrument-panel member 6 extending a lateral direction of a vehicle. The support structure comprises a first bracket 20 fixed to the instrument-panel member 6, a steering column 19 rotatably mounting the steering shaft 9, a second bracket 21, 22 fixed to the steering column 19, and coupling means 23, 24 for providing a coupling between the first bracket 20 and the second bracket 21, 22. The coupling means 23, 24 is designed to allow the second bracket 21, 22 to have an axial relative displacement with respect to the first bracket 20 on the basis of an axial direction of the steering shaft 9 while allowing an upward relative displacement of the second bracket 21, 22 with respect to the first bracket 20 in the course of the axial relative displacement, during a vehicle collision.

Abstract: Disclosed a structure for supporting a steering device including a steering shaft 9 adapted to transmit a steering force of a steering wheel to road wheels, relative to a vehicle body through an instrument-panel member 6 extending a lateral direction of a vehicle. The support structure comprises a first bracket 20 fixed to the instrument-panel member 6, a steering column 19 rotatably mounting the steering shaft 9, a second bracket 21, 22 fixed to the steering column 19, and coupling means 23, 24 for providing a coupling between the first bracket 20 and the second bracket 21, 22. The coupling means 23, 24 is designed to allow the second bracket 21, 22 to have an axial relative displacement with respect to the first bracket 20 on the basis of an axial direction of the steering shaft 9 while allowing an upward relative displacement of the second bracket 21, 22 with respect to the first bracket 20 in the course of the axial relative displacement, during a vehicle collision.

Abstract: A resonance drive actuator includes a casing; an electromagnetic drive section supported in the interior of the casing; a plunger to be reciprocatively driven at least in a rotational direction or in an axial direction by the electromagnetic drive section; an output shaft on which the plunger is fixed; and a spring which acts between the output shaft and the casing. The actuator resonantly drives a load connected to an end of the output shaft. The spring is a plate spring which integrally includes a casing inner-surface abutment portion fixedly abutting the inner surface of the casing, an output-shaft abutment portion fixedly abutting an outer surface of the output shaft, and a connection portion having the form of a strip and connecting the output-shaft abutment portion and the casing inner-surface abutment portion. The plate spring is fixed to both of the inner surface of the casing, and the output shaft.

Abstract: The present invention provides a mechanical encoder device for use in a miniature motor, which encoder can provide, for each revolution of the motor, a plurality of pulses whose duty ratio does not change with time. A rotary contact portion 12 is provided on a rotor shaft 1, and a pair of rotation-detecting brushes 14 in sliding contact with the rotary contact portion 12 are provided on a brush holder 29 of an end cap 6. A plurality of rotary contact pieces 13 are arranged on the outer circumferential surface of the rotary contact portion 12 such that slits are formed therebetween. The paired rotation-detecting brushes 14 are each formed of a resilient metal and each assume the shape of a cantilever plate or wire spring whose side surface portion is subjected to sliding contact.

Abstract: The present invention provides a mechanical encoder device for use in a miniature motor, which encoder can provide, for each revolution of the motor, a plurality of pulses whose duty ratio does not change with time. A rotary contact portion 12 is provided on a rotor shaft 1, and a pair of rotation-detecting brushes 14 in sliding contact with the rotary contact portion 12 are provided on a brush holder 29 of an end cap 6. A plurality of rotary contact pieces 13 are arranged on the outer circumferential surface of the rotary contact portion 12 such that slits are formed therebetween. The paired rotation-detecting brushes 14 are each formed of a resilient metal and each assume the shape of a cantilever plate or wire spring whose side surface portion is subjected to sliding contact.

Abstract: A motor in which an attracting magnet for attraction between a rotor and a stator is used in the present invention. The attracting magnet is formed into a hollow cylindrical shape such as to have two flat surfaces between which a predetermined thickness is defined. The attracting magnet is magnetized so as to have different polarities at the inner and outer circumference sides divided in the radial direction in each of its two flat surfaces, and to be reversed in polarity in an interchanging manner between its two flat surfaces. The attracting magnet is mounted on an inner surface of a rotor case while being opposed to a bearing housing. In this motor using the attracting magnet arrangement, the shaft is not magnetized even though the attracting magnet for attraction of the rotor toward the stator is used.