Title:
HAPTIC ACTUATOR AND ELECTRONIC DEVICE INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2021/025338
Kind Code:
A1
Abstract:
An actuator according to various embodiments of the present invention comprises: a stator including a bracket, a yoke located on the bracket, and a coil for encompassing the circumference of the yoke; a permanent magnet encompassing the circumference of the coil; a vibrator including a weight encompassing the circumference of the permanent magnet, and a plate for supporting the permanent magnet and the weight; an elastic member located between the bracket and the vibrator so as to support the vibrator; and a magnetic fluid which is located between the vibrator and the stator, and which provides damping stability when the vibrator vibrates, wherein the weight of the magnetic fluid can be between 0.24% to 0.71% on the basis of the weight of the vibrator. Other various embodiments are possible.
Inventors:
LEE JEONGSEOK (KR)
SONG KWONHO (KR)
NOH JUNHO (KR)
SHIM SOONKOO (KR)
LEE MINKU (KR)
CHONG YOUNGBIN (KR)
CHOI NAMJIN (KR)
KIM TAESIK (KR)
DAE WOONKI (KR)
BAE YUDONG (KR)
SONG KWONHO (KR)
NOH JUNHO (KR)
SHIM SOONKOO (KR)
LEE MINKU (KR)
CHONG YOUNGBIN (KR)
CHOI NAMJIN (KR)
KIM TAESIK (KR)
DAE WOONKI (KR)
BAE YUDONG (KR)
Application Number:
PCT/KR2020/009655
Publication Date:
February 11, 2021
Filing Date:
July 22, 2020
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO LTD (KR)
JAHWA ELECTRONICS CO LTD (KR)
JAHWA ELECTRONICS CO LTD (KR)
International Classes:
G06F3/01; H01F1/44; H01L41/09; H02K5/04; H02K33/02; H02K33/16
Foreign References:
| KR20180035258A | 2018-04-06 | |||
| KR20110055757A | 2011-05-26 | |||
| KR0177569B1 | 1999-05-15 | |||
| JP2011189337A | 2011-09-29 | |||
| US20190238038A1 | 2019-08-01 |
Attorney, Agent or Firm:
KWON, Hyuk-Rok et al. (KR)
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