Title:
BISTABLE HINGE FOR EARPHONE CHARGE CASE AND EARPHONE CHARGE CASE
Document Type and Number:
WIPO Patent Application WO/2021/254012
Kind Code:
A1
Abstract:
Embodiments of the present application provide a bistable hinge for an earphone charge case and the earphone charge case. The bistable hinge comprises an installation base, a rotating connector, and an elastic piece. The rotating connector is rotatably connected to the installation base, the rotating connector has a rotating axis, and the rotating connector has a first stable position, a critical position, and a second stable position, the critical position being between the first stable position and the second stable position. The elastic piece is loaded between the installation base and the rotating connector. When the rotating connector is at the critical position, the torque of the elastic piece on the rotating connector is zero; when the rotating connector is offset from the critical position at either side along the rotating direction, the elastic piece exerts a drive torque on the rotating connector so as to drive the rotating connector to move to the first stable position or the second stable position. The bistable hinge of the embodiments of the present application has automatic closing and automatic opening functionalities within a certain rotation range, and the closing process and opening process both provide damping tactile feel, facilitating user experience.
Inventors:
CAI ZHAOQIU (CN)
Application Number:
PCT/CN2021/091878
Publication Date:
December 23, 2021
Filing Date:
May 06, 2021
Export Citation:
Assignee:
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD (CN)
International Classes:
H04R1/10; H02J7/00; B65D43/16
Foreign References:
| CN213186464U | 2021-05-11 | |||
| CN211296918U | 2020-08-18 | |||
| CN211557457U | 2020-09-22 | |||
| CN211656359U | 2020-10-09 | |||
| CN212085837U | 2020-12-04 | |||
| CN110191383A | 2019-08-30 | |||
| CN111255798A | 2020-06-09 | |||
| CN110913300A | 2020-03-24 | |||
| CN209882041U | 2019-12-31 | |||
| US20170094398A1 | 2017-03-30 | |||
| CN210469954U | 2020-05-05 | |||
| CN208402075U | 2019-01-18 |
Other References:
See also references of EP 4156710A4
Attorney, Agent or Firm:
CHINA PAT INTELLECTUAL PROPERTY OFFICE (CN)
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