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1. 发明授权

US09525379B2 Control method for vibration generator and vibration generator 有权
标题翻译：振动发生器和振动发生器的控制方法
公开(公告)号：US09525379B2
公开(公告)日：2016-12-20
申请号：US14730673
申请日：2015-06-04
申请人： Minebea Co., Ltd.
发明人： Mikio Umehara , Yutaka Kamogi
IPC分类号： H01F7/00 , H02P25/02
CPC分类号： H02P25/032
摘要： A control method for a vibration generator is provided. The vibration generator includes a fixed part around which a coil is wound, a movable part having a magnet, a bridge part movably supporting the movable part, and a power supply unit which applies an alternating current of a predetermined frequency to the coil. The power supply unit starts at the time of startup by the alternating current with a starting frequency which differs from a resonance frequency of the movable part, and the power supply unit changes the frequency of the applied alternating current to the resonance frequency of the movable part when the amount of vibration at the starting frequency reaches a predetermined ratio with respect to a saturation vibration amount of the resonance frequency.
摘要翻译：提供了一种用于振动发生器的控制方法。振动发生器包括线圈缠绕的固定部分，具有磁体的可动部分，可移动地支撑可动部分的桥接部分，以及向线圈施加预定频率的交流电的电源单元。电源单元在启动时以起动频率与可动部的谐振频率不同的开始频率起动，电源单元将施加的交流电流的频率变更为可动部的谐振频率当起动频率的振动量相对于谐振频率的饱和振动量达到预定比率时。

2. 发明授权

US10432074B2 Vibrator unit and vibration generator 有权
公开(公告)号：US10432074B2
公开(公告)日：2019-10-01
申请号：US15285014
申请日：2016-10-04
申请人： MINEBEA CO., LTD.
发明人： Mikio Umehara , Yutaka Kamogi
IPC分类号： H02K33/06 , H02K33/16 , B06B1/04
摘要： 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.

3. 发明申请

US20150357958A1 Control Method For Vibration Generator And Vibration Generator 有权
标题翻译：振动发生器和振动发生器的控制方法
公开(公告)号：US20150357958A1
公开(公告)日：2015-12-10
申请号：US14730673
申请日：2015-06-04
申请人： Minebea Co., Ltd.
发明人： Mikio Umehara , Yutaka Kamogi
IPC分类号： H02P25/02
CPC分类号： H02P25/032
摘要： A control method for a vibration generator is provided. The vibration generator includes a fixed part around which a coil is wound, a movable part having a magnet, a bridge part movably supporting the movable part, and a power supply unit which applies an alternating current of a predetermined frequency to the coil. The power supply unit starts at the time of startup by the alternating current with a starting frequency which differs from a resonance frequency of the movable part, and the power supply unit changes the frequency of the applied alternating current to the resonance frequency of the movable part when the amount of vibration at the starting frequency reaches a predetermined ratio with respect to a saturation vibration amount of the resonance frequency.
摘要翻译：提供了一种用于振动发生器的控制方法。振动发生器包括线圈缠绕的固定部分，具有磁体的可动部分，可移动地支撑可动部分的桥接部分，以及向线圈施加预定频率的交流电的电源单元。电源单元在启动时以起动频率与可动部的谐振频率不同的开始频率起动，电源单元将施加的交流电流的频率变更为可动部的谐振频率当起动频率的振动量相对于谐振频率的饱和振动量达到预定比率时。

4. 发明授权

US10396623B2 Motor shaft, motor and motor assembly 有权
公开(公告)号：US10396623B2
公开(公告)日：2019-08-27
申请号：US16169734
申请日：2018-10-24
申请人： MINEBEA CO., LTD.
发明人： Makoto Otsuka , Yutaka Kamogi , Jun Ohmura
IPC分类号： H02K7/00 , F16C3/02 , F16D1/08 , F16D1/072 , F16C19/54
摘要： 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.

5. 发明授权

US10141812B2 Motor shaft, motor and motor assembly 有权
公开(公告)号：US10141812B2
公开(公告)日：2018-11-27
申请号：US14993276
申请日：2016-01-12
申请人： MINEBEA CO., LTD.
发明人： Makoto Otsuka , Yutaka Kamogi , Jun Ohmura
IPC分类号： H02K7/00 , F16C3/02 , F16D1/072 , F16C19/54
摘要： A motor shaft is configured to be press-fitted into a hole formed in a press-fitted component from a front end side in an axial direction. The motor shaft includes: a shaft body; a first annular projection portion that protrudes outwardly in a radial direction of the shaft body and is brought into contact with an inner circumferential surface of the hole the first annular projection portion being positioned at a first position; and a second annular projection portion that protrudes outwardly in the radial direction of the shaft body and is brought into contact with the inner circumferential surface of the hole, the second annular projection portion being positioned at a second position that is shifted from the first position toward a rear end side in the axial direction of the shaft body.

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