Asmo Co., Ltd.

Tadashi Adachi

Katsuhiko Torii

Hiroaki Yamamoto

Youichi Matsuyama

Hirofumi Sakai

Kengo Yamamura

Hiroshi Kokubu

Takenobu Kawakami

Toshiyuki Masuda

Toshihiro Saitou

Shingo Omori

Kouji Shibata

Keijiro Suzuki

A connector housingis formed separately from a gear housingand a closing and fixing member. The connector housingincludes a retainer, which supports an external connectorrelative to the closing and fixing member, and an elastically deformable grommet. A retainer-side end of the grommetis interposed between a flange portion of the retainerand an outer surface of the closing and fixing member, and the connector housingis secured to a connector installation opening. With this construction, it is possible to achieve a high degree of design freedom and to provide a motor having a drip-proof structure of a relatively simple configuration.

Motor and method of manufacturing the same

A control circuit board is held in a gear housing of a motor, and a connector housing is connected to the gear housing. The connector housing is formed separately from the gear housing and includes a plurality of connection terminals that are secured to the connector housing. The connection terminals of the connector housing are connected with electric circuit components of the control circuit board. The connection terminals are also connected with corresponding terminals of an external connector when the external connector is connected to the connector housing.

Motor having connector housing

In a motor having a motor unit and a speed-reducing unit, a brush holder is sandwiched between a yoke housing of the motor unit and a gear housing of the speed-reducing unit. The brush holder includes holder body, joining portion, and connector portion. The holder body is formed with a first opening being open in the yoke housing. The joining portion is formed with a cylindrical portion extending in a direction same as the opening direction of a connector recessed portion of the connector portion. A second opening is formed on an end surface of the cylindrical portion. The first opening communicates with the second opening through first and second communication holes, so that pressure difference between the inside and outside of the yoke housing and the gear housing are cancelled.

Motor having brush holder with communication hole

A clutch is arranged between a rotatable shaft and a worm shaft in a motor. The clutch includes a driving-side rotator connected to the rotatable shaft, a driven-side rotator connected to the worm shaft, a spring support and a coil spring arranged in the spring support. When the driving-side rotator is rotated upon energization of the motor, the coil spring is wound by the driving-side rotator to reduce an outer diameter of the coil spring, so that the rotation of the driving-side rotator is transmitted to the driven-side rotator and the worm shaft. When the driven-side rotator is rotated by an external mechanical force, the coil spring is unwound by the driven-side rotator to increase the outer diameter of the coil spring, so that a frictional force between the spring support and the coil spring is increased to restrain rotation of the driven-side rotator.

Motor having clutch

A motor includes a motor unit and a speed reducing unit. The speed reducing unit has a gear housing. The gear housing includes a circuit board receiving portion and an opening that faces the motor unit. A control circuit board is received in the circuit board receiving portion through the opening in an axial direction of a rotatable shaft. When the motor unit is assembled to the speed-reducing unit, the control circuit board is clamped between the speed-reducing unit and a cover connected to the motor unit.

Motor having control circuit board for controlling its rotation

A driving-side rotator of a clutch has a connecting hole, within which a connecting portion of a rotatable shaft is loosely fitted while providing a space between the connecting hole and the connection portion. The connecting hole of the driving-side rotator is engageable with the connecting portion of the rotatable shaft in a rotational direction to integrally rotate with connecting portion of the rotatable shaft. Two positioning holes are provided in a brush holder, and two positioning projections are provided in a gear housing to allow direct positioning of the brush holder and the gear housing relative to each other.

Motor having rotatable shaft coupled with worm shaft

In a geared motor, a cover plate is fitted to an opening of a housing of a geared motor. The cover plate includes an output shaft hole, a rib and a short cylindrical portion. The output shaft hole penetrates through a center of the cover plate and rotatably receives an output shaft therethrough. The rib is formed along an outer peripheral edge of the cover plate and is radially supported by the housing. The short cylindrical portion is slidably engageable with an outer peripheral surface of the output shaft for radially supporting the output shaft. An inner peripheral surface of a worm wheel is slidably engageable in line contact with a sliding ridge of a disk plate of the output shaft.

Geared motor having worm wheel drivingly connected to output shaft

In a geared motor, a worm wheel and an output gear are rotatably supported about and slidably engaged with a center shaft. A transmitting plate connected to the output gear transmits rotation from the worm wheel to the output gear. An O-ring is fitted around the center shaft. The O-ring is sealingly surrounded on four sides in a seal retaining portion defined by an outer peripheral surface of the center shaft, an inner peripheral surface of the transmitting plate, an end surface of an annular protrusion of the worm wheel and one end surface of the output gear.

Geared motor having seal member for restraining intrusion of water or the like

A clutch includes a stopper secured to a gear housing of a motor. Once the stopper is secured to the gear housing, the stopper restrains axial movement of rolling elements by restraining axial movement of a support member, which rotatably supports the rolling elements, to retain the rolling elements within a collar. A driven-side rotator of the clutch includes reinforcing ribs for reinforcing engaging projections of the driven-side rotator.

Motor having clutch provided with stopper

In a clutch, when a driving-side rotator is rotated, the driving-side rotator engages a driven-side rotator in a rotational direction and transmits a rotational force of the driving-side rotator to the driven-side rotator. When the driven-side rotator is rotated by an external force, a rolling element is clamped between the driven-side rotator and an inner circumferential surface of a housing. At the same time the driven-side rotator is allowed to rotate while generating a desired frictional force between the rolling element and the inner circumferential surface of the housing, so that the rotation of the driven-side rotator is not transmitted to the driving-side rotator.

Clutch and motor including such clutch

A tension adjusting apparatus comprising a coupling device for movably coupling both ends of an elongated member disposed in the shape of a loop in a direction in which both ends approach and/or move apart from each other along the longitudinal direction of the elongated member, and an urging member retained by the coupling device and for urging the elongated member via the coupling device in a direction in which both ends of the elongated member approach to each other in order to apply tension to the elongated member. The smooth movement of the elongated member transmitting motive power and the tension of the elongated member at a predetermined value are thereby maintained without impeding the durability of the elongated member.

Growing community of inventors

Kosai, Japan

Tadashi Adachi