Minebea Mitsumi Inc.

Minebea Company, Limited

Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Yutaka Kamogi

Mikio Umehara

Jun Ohmura

Makoto Otsuka

Tomohisa Suzuki

Yasuhiro Ikehara

Kenji Kondo

Koji Kuyama

Masahito Hidaka

Koji Wakiyama

Yoshiaki Fukuda

Yukio Nakamura

Masaki Kagawa

In accordance with one aspect of the present disclosure, a vibration generating device includes a protruding part; a base provided with the protruding part and formed of a magnetic body; an annular coil surrounding the protruding part; a plate facing the base and formed of a magnetic body; and an elastic member supporting the plate with respect to the base. The plate and the base constitute magnetic circuit.

Vibration generating device and electronic device

In accordance with one aspect of the present disclosure, an electronic device includes a housing, a contact member attached to the housing, a plate displaceable with respect to the base, an elastic member supporting the plate with respect to the base. The base, the plate and the elastic member are arranged inside the housing. A magnetic gap is formed with the plate and the base. The plate connects with the contact member.

Electronic device

A motor according to an embodiment includes a stator. The stator includes a plurality of connection cores. The connection core includes a plurality of pieces connected via connection portions. The plurality of pieces are arranged in a circular arc shape. The plurality of connection cores are arranged in an annular shape.

Motor

In accordance with one aspect of the present disclosure, an electronic device includes a housing, a contact member attached to the housing, and a vibration generating device. The vibration generating device is fixed to the contact member or the housing. A gap is formed between a surface of the vibration generating device facing the housing and a surface of the housing facing the vibration generating device.

A motor according to the present disclosure is a motor including a motor body part and a driving circuit part, the motor body part including: a rotor; a stator including a wound coil; a winding terminal electrically connected to the coil and extending toward the driving circuit part; and a frame housing the rotor and the stator, wherein the driving circuit part includes: a case including a first attaching portion and a frame portion with openings on both end sides of the frame portion; a first wiring board including a driving circuit and a power device mounted on the first wiring board, the first wiring board being fixed to the first attaching portion; and a first electric wiring member including a first stress absorbing portion formed into a shape absorbing stress, the first electric wiring member electrically connecting the winding terminal and the first wiring board.

Motor with stress absorbing portions

A vibrator unit capable of being attached to a housing of a vibration generator includes a vibrator including a magnet and a back yoke arranged on or above the magnet, and an elastic member. The elastic member includes a vibrator attachment part attached to the vibrator, a housing attachment part attached to the housing, and an arm part coupling the vibrator attachment part and the housing attachment part, said arm part displaceably supporting the vibrator attachment part at least in a horizontal direction with respect to the housing attachment part. The back yoke includes a planar part arranged on or above the magnet and a holding part bending the planar part toward the frame from the planar part. The vibrator attachment part is held and embraced by the holding part.

Vibrator unit and vibration generator

A motor includes a rotational shaft, a bearing supporting the rotational shaft, a magnet including plural magnetic poles in a circumferential direction, a rotor core disposed inside the magnet, and a magnetic sensor. The magnet includes a projection portion projecting toward a side of the bearing with respect to the rotor core in a direction of the rotational shaft. The magnetic sensor is positioned between the rotor core and the bearing in the direction of the rotational shaft and is positioned inside an inner peripheral surface of the projection portion.

A motor includes: a motor shaft including a press-fitting surface; and a first annular projection group and a second annular projection group formed in the press-fitting surface of the motor shaft. The first annular projection group and the second annular projection group are separated from each other in an axial direction, a distance between an adjacent two of annular projections in the first annular projection group and a distance between an adjacent two of annular projections in the second annular projection group are smaller than a distance between the first annular projection group and the second annular projection group in the axial direction.

Growing community of inventors

Yonago, Japan

Yutaka Kamogi