Invention Grant
- Patent Title: Vibration generator
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Application No.: US17000705Application Date: 2020-08-24
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Publication No.: US11621622B2Publication Date: 2023-04-04
- Inventor: Masanobu Maeda , Katsutoshi Suzuki
- Applicant: ALPS ALPINE CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: ALPS ALPINE CO., LTD.
- Current Assignee: ALPS ALPINE CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: IPUSA, PLLC
- Priority: JPJP2019-156104 20190828
- Main IPC: H02K33/02
- IPC: H02K33/02 ; H02K33/18 ; B06B1/04

Abstract:
A vibration generator includes a housing, a first vibrator, and a second vibrator. The first vibrator includes a hollow yoke having a through hole, a magnet disposed within the through hole of the yoke, and a first elastic support member. The second vibrator includes a coil disposed above or below the magnet within the through hole of the yoke, and a second elastic support member to which the coil is fixed and that is disposed to extend from the inside to the outside of the through hole of the yoke and that is fixed to the housing. The first vibrator vibrates at a first natural frequency in a direction connecting both side portions of the yoke. The second vibrator vibrates at a second natural frequency that is different from the first natural frequency, in the direction connecting the both side portions of the yoke.
Public/Granted literature
- US20210067021A1 VIBRATION GENERATOR Public/Granted day:2021-03-04
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