IP Library Granted Patent US 12,294,271
Granted Patent B2
US 12,294,271 · App. 18/517,023 · Granted May 6, 2025

Vibration actuator and vibration presenting apparatus

Inventors: Yuki Takahashi (Tokyo, JP); Tomoya Ishitani (Tokyo, JP)
Assignee: MINEBEA MITSUMI Inc.
H02K33/06H02K33/16B06B1/045H02K33/00H02K33/02H02K33/04
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Quick Facts
Patent No.
US 12,294,271
App. No.
18/517,023
Granted
May 6, 2025
Kind
B2
Abstract

Provided is a vibration actuator that includes: a coil; a core around which the coil is wound, the core including both ends projecting from the coil; a yoke formed of a magnetic material and disposed opposite to the both ends of the core at a position adjacent to the both ends of the core with a gap provided between the yoke and the both ends of the core in a direction orthogonal to a winding axis of the coil; and an elastic part fixed between the core and the yoke and configured for elastic support to enable a movement between the core and the yoke in a direction opposite to at least one of the both ends of the core.

Claims (6)

1. A vibration actuator, comprising:

a metal plate including a through hole at a center portion;

a plate-shaped electromagnet obtained by winding a coil at a center portion of a plate-shaped core; and

a support part configured to elastically support the plate-shaped electromagnet with respect to the metal plate with the coil disposed to face a through hole, such that the plate-shaped electromagnet is displaced in the opposing direction of the coil and the through hole, wherein

when the plate-shaped electromagnet suctions the metal plate in the opposing direction with a magnetic force generated by energization to the coil, a vibration of the vibration actuator is generated.

2. The vibration actuator according to claim 1 , wherein the support part is a plate-shaped support part.

Priority Claims (1)
JP 2018-206111 · Oct 31, 2018 · national
Continuity (3)
Continuation 18053392 · Nov 8, 2022
Continuation 16669567 · Oct 31, 2019
Related Publication 20240097544A1 · Mar 21, 2024
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