Title:
THREE-DIMENSIONAL RATCHET BACKSTOP STRUCTURE FOR TRIGGER
Document Type and Number:
WIPO Patent Application WO/2021/035663
Kind Code:
A1
Abstract:
A three-dimensional ratchet backstop structure for a trigger. A clamping block seat (14) is provided in a housing (10), a central shaft (141) passes through the clamping block seat (14), and a top block (15) having a climbing surface (151) is formed on an end face of the clamping block seat (14) in a circular shape, a pivoting part (211) of a trigger (20) is pivoted to the housing (10), an arc-shaped main ratchet rack (226) protrudes from the pivoting part (211) towards the clamping block seat (14), a main clamping gear block (31) is sheathed on the central shaft (141) in a resettable manner, the main clamping gear block (31) is provided with a bottom block (313) fitting each top block (15). When the trigger (20) is pressed and rotates in the forward direction, the main ratchet rack (226) is clamped unidirectionally by the main clamping gear block (31), and when the main ratchet rack (226) is separated from the main clamping gear block (31) to reversely toggle the main clamping gear block (31) by means of the bottom edge thereof, the main clamping gear block (31) moves transversely by means of the bottom block (313) thereof along the climbing surface (151) to jump out of the plane where the main ratchet rack (226) is located, being able to reduce the magnitude of idle strokes when reversely toggling the main clamping gear block (31) when the trigger (20) is released, allowing a compact backstop structure.
Inventors:
CHEN KUEI-HUA (CN)
Application Number:
PCT/CN2019/103567
Publication Date:
March 04, 2021
Filing Date:
August 30, 2019
Export Citation:
Assignee:
TAIWAN SURGICAL CORP (CN)
International Classes:
A61B17/128; A61B17/122
Foreign References:
| CN107049408A | 2017-08-18 | |||
| US20180116675A1 | 2018-05-03 | |||
| CN105962985A | 2016-09-28 | |||
| TW201912115A | 2019-04-01 | |||
| US20080188872A1 | 2008-08-07 |
Attorney, Agent or Firm:
BEIJING HUI & XIN IP LAW OFFICE (CN)
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