Invention Publication
- Patent Title: VIBRATION MOTOR AND TACTILE DEVICE INCLUDING THE SAME
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Application No.: US18380732Application Date: 2023-10-17
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Publication No.: US20240128846A1Publication Date: 2024-04-18
- Inventor: Toshitaka YAMAZAKI , Jun INOUE , Yoichi SEKII
- Applicant: Nidec Corporation
- Applicant Address: JP Kyoto
- Assignee: Nidec Corporation
- Current Assignee: Nidec Corporation
- Current Assignee Address: JP Kyoto
- Priority: JP 22166753 2022.10.18 JP 23153997 2023.09.20
- Main IPC: H02K33/18
- IPC: H02K33/18 ; H02K5/22

Abstract:
A vibration motor includes a stationary portion and a movable portion to vibrate in a central axis direction with respect to the stationary portion. The stationary portion includes a housing and a coil on an outer side in a radial direction of the movable portion. The movable portion includes a core portion including a magnet. The housing houses the movable portion and the coil, and includes a peripheral wall portion on an outer side in the radial direction of the coil and extending in an axial direction, and a magnetic portion on a portion of the peripheral wall portion and including a magnetic body. At least a portion of the magnetic portion opposes the coil in the radial direction and extends in a circumferential direction. The peripheral wall portion includes a through hole adjacent to the magnetic portion in the axial direction and extends in the circumferential direction.
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