Title:
振動ユニット
Document Type and Number:
Japanese Patent JP7379923
Kind Code:
B2
Abstract:
To provide a vibration unit capable of improving tactile properties.SOLUTION: In a vibration unit 1, a control part 50 outputs a drive voltage signal to a piezoelectric vibrator 20 to vibrate the piezoelectric vibrator 20, when a negative voltage value reaches a first threshold value V1 in a depression phase PH1 that depression starts and the negative voltage value of a voltage signal outputted from a piezoelectric vibrator gradually increases and when the voltage value reaches a second threshold value V2 in a release phase PH2 that the depression is completed and the voltage value of the voltage signal gradually increases. Namely, in the vibration unit 1, the piezoelectric vibrator 20 vibrates in both the depression phase PH1 and the release phase PH2. Therefore, excellent tactile properties can be obtained only in one of the depression phase PH1 and the release phase PH2 compared with when the piezoelectric vibrator vibrates.SELECTED DRAWING: Figure 6
Inventors:
Atsushi Ezawa
Takuto Horii
Miho Bamba
Kaoru Kijima
Toruyuki Taniguchi
Akira Takeda
Takuto Horii
Miho Bamba
Kaoru Kijima
Toruyuki Taniguchi
Akira Takeda
Application Number:
JP2019147969A
Publication Date:
November 15, 2023
Filing Date:
August 09, 2019
Export Citation:
Assignee:
SAE Magnetics(H.K.)Ltd.
International Classes:
G06F3/01; G06F3/041
Domestic Patent References:
| JP2012014377A | ||||
| JP2010152889A | ||||
| JP2019058848A | ||||
| JP2011048855A | ||||
| JP2017033505A |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Takashi Mikami
Yoshiki Kuroki
Takashi Mikami