Title:
OPENING AND CLOSING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/161325
Kind Code:
A1
Abstract:
An opening and closing device, comprising: a first part (1), a second part (2) and a third part (3); the second part (2) is rotatably connected to the first part (1), and the third part (3) is rotatably connected to the second part (2). The opening and closing device further comprises a mode switching device (4), which is used for switching the operating mode of the opening and closing device; operating modes comprise a normal mode and a labor-saving mode. When the opening and closing device is in normal mode, the third part (3) and the second part (2) are fixed relative to one another; when the opening and closing device is in labor-saving mode, the third part (3) rotates in an opening direction relative to the second part (2) during a process in which the opening and closing device is opened; during a process in which the opening and closing device is closed, the third part (3) rotates in a closing direction relative to the second part (2).
Inventors:
WANG MIN (CN)
Application Number:
PCT/CN2017/076209
Publication Date:
September 13, 2018
Filing Date:
March 09, 2017
Export Citation:
Assignee:
HANGZHOU GREAT STAR IND CO LTD (CN)
HANGZHOU GREAT STAR TOOLS CO LTD (CN)
HANGZHOU GREAT STAR TOOLS CO LTD (CN)
International Classes:
B25B7/00
Foreign References:
| US20010007214A1 | 2001-07-12 | |||
| CN204248693U | 2015-04-08 | |||
| CN106141947A | 2016-11-23 | |||
| CN106181805A | 2016-12-07 |
Attorney, Agent or Firm:
SUNRAY INTELLECTUAL PROPERTY ATTORNEYS (CN)
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