Asmo Co., Ltd.

Denso Corporation

Hiroshi Kokubu

Katsuhiko Torii

Nobuo Mizutani

Tomoki Yamashita

Tomoaki Ozaki

Tatsuya Suzuki

Kazutaka Sakohira

Mitsuhiro Takada

Hidenori Ishihara

Hiroaki Yamamoto

Tadashi Adachi

Nakatsune Shirai

Youichi Matsuyama

Katsumi Endo

The axial direction of a worm wheel is defined as a motor short-transverse direction, and a plane orthogonal to the motor short-transverse direction is defined as a motor flat plane. An imaginary plane contacting a first end of a sensor magnet in a motor short-transverse direction and parallel with the flat plane is defined as a first imaginary plane. An imaginary plane contacting a second end of the sensor magnet in the motor short-transverse direction and parallel with the flat plane is defined as a second imaginary plane. A control circuit board is provided with a rotation detecting element that detects rotation of the rotary shaft of the motor. The control circuit board is arranged to be parallel with or inclined relative to the flat plane, and is provided between the first and second imaginary planes.

Motor

A brush holder is placed between a yoke housing and a gear housing and includes a holder member and a base member. The holder member is installed to an opening of the yoke housing and holds a plurality of brushes. The base member is installed to the holder member and includes a connector configured to connect with an external connector to receive an electric power. An output side end part of the yoke housing has a flange portion, through which the gear housing is fixed to the yoke housing. The holder member includes a contact portion that contacts an opening end portion of the yoke housing in an axial direction of a rotatable shaft. The contact portion is axially spaced from the base member by an axial gap.

Electric motor

A clutch is provided that includes an annular clutch housing, a driving-side rotor, a driven-side rotor having a control surface, and a rolling element located between the inner circumferential surface of the clutch housing and the control surface. The control surface faces radially outward in the clutch housing. When the driving-side rotor rotates, the rotational driving force of the driving-side rotor is transmitted to the driven-side rotor. When the driving-side rotor is driven to rotate, the rolling element rotates together with the driven-side rotor. When the driving-side rotor is not driven to rotate, the rolling element is held between the inner circumferential surface of the clutch housing and the control surface so as to prevent the driven-side rotor from rotating.

Clutch and motor

A motor including a motor case, a rotary shaft, and a connector module. The rotary shaft is accommodated and rotated in the motor case. The connector module includes a connector unit, which is electrically connected to an external device and supplies power, and a flat control circuit substrate, which controls rotation of the rotary shaft. The motor case includes an insertion opening into which the connector module is inserted along an insertion direction. The connector module includes a connector housing, which accommodates at least part of the control circuit substrate, and a flat relay, which electrically connects the control circuit substrate and the connector unit and is arranged at a right angle relative to the control circuit substrate.

An output power transmission device has a transmission plate and a C-ring. The transmission plate is attached to a wheel gear in an axial direction of the wheel gear such that the transmission plate directly engages with the wheel gear in a rotation direction. The transmission plate functions as a transmission member for transmitting rotation of the wheel gear to an output shaft. The C-ring is provided at a position where the C-ring sandwiches the transmission plate with the wheel gear in the axial direction. The C-ring functions as a restriction section for restricting movement of the transmission plate in the axial direction opposite from the wheel gear side. An elastic claw section as a pressing member is formed on the wheel gear. The elastic claw section presses the transmission plate against the C-ring in the axial direction.

Output power transmission device and motor with speed reducing mechanism

A brush holder is placed between a yoke housing and a gear housing and includes a holder member and a base member. The holder member is installed to an opening of the yoke housing and holds a plurality of brushes. The base member is installed to the holder member and includes a connector, which is adapted to connect with an external connector to receive an electric power. An output side end part of the yoke housing has a flange portion, through which the gear housing is fixed to the yoke housing. The holder member includes a contact portion that contacts the flange portion of the yoke housing in an axial direction of a rotatable shaft.

A brush holder is installed to a motor main body and has a connector arrangement, which is directly connectable with an external connector to receive electric power. The brush holder holds a plurality of power supply brushes. A control circuit member is installed in a gear housing through an installation opening of the gear housing. The control circuit member controls rotation of the motor main body and is electrically connected to the connector arrangement and the power supply brushes.

Motor, control circuit member and manufacturing method of motor

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.

Growing community of inventors

Kosai, Japan

Hiroshi Kokubu