Title:
OPERATION DEVICE AND VIBRATION GENERATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/044631
Kind Code:
A1
Abstract:
This operation device comprises a vibration generating unit, etc. The vibration generating unit includes a movable yoke, a fixed yoke, a permanent magnet that is attached to the movable yoke, an excitation coil that is attached to the fixed yoke, and an elastic support portion that is disposed between the movable yoke and the fixed yoke. The fixed yoke includes a base portion, a first protruding portion, and two second protruding portions. The permanent magnet is magnetized such that both ends thereof in the first direction have different magnetic poles, and the boundary between the magnetic poles overlaps, in a second direction, with the first protruding portion. In the initial state, the magnetic attraction force of the permanent magnet urges the movable yoke, in the second direction, toward the fixed yoke, the elastic support portion is compressed between the movable yoke and the fixed yoke, and the movable yoke is urged, in the first direction, toward a first position. When current flows through the excitation coil, the movable yoke vibrates in the first direction with the first position set as a neutral position.
Inventors:
WAKUDA HIROSHI (JP)
Application Number:
PCT/JP2019/010390
Publication Date:
March 05, 2020
Filing Date:
March 13, 2019
Export Citation:
Assignee:
ALPS ALPINE CO LTD (JP)
International Classes:
B06B1/04; G06F3/01; G06F3/0354; G06F3/041; H02K33/02
Foreign References:
| JP2003058321A | 2003-02-28 | |||
| JP2007037273A | 2007-02-08 | |||
| JP2018086622A | 2018-06-07 | |||
| JP2018118233A | 2018-08-02 |
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
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