Title:
LATCH BOLT ASSEMBLY HAVING UNIFORM STRESS
Document Type and Number:
WIPO Patent Application WO/2019/113983
Kind Code:
A1
Abstract:
A latch bolt assembly having uniform stress, which relates to the technical field of locks. The latch bolt component is used in a lock and comprises a bracket push piece (10), a latch bolt rod (20) and a toggle bracket (30); the toggle bracket (30) comprises a rotating shaft (33), a first toggle (31) and second toggles (32); the side edge of the first toggle (31) abuts against the bracket push piece (10); a guide piece (21) is fixed to the latch bolt rod (20), and the side edge of the second toggles (32) abuts against the guide piece (21); there are two second toggles (32), and the two second toggles are respectively formed on two sides of the latch bolt rod (20) and both abut against the guide piece (21); and the second toggles (32) drive the latch bolt rod (20) to move along the length direction thereof. The described latch bolt assembly having uniform stress solves the technical problems in existing latch bolt assemblies of the pushing effect point between a toggle and a guide piece of a latch bolt rod being relatively singular and the stress to a unilateral toggle mechanism in the revolving process being unbalanced, which cause the latch bolt to retract and become stuck.
Inventors:
JIANG LINGFAN (CN)
Application Number:
PCT/CN2017/116698
Publication Date:
June 20, 2019
Filing Date:
December 16, 2017
Export Citation:
Assignee:
JIANG LINGFAN (CN)
International Classes:
E05B15/10
Domestic Patent References:
| WO2003089740A2 | 2003-10-30 |
Foreign References:
| CN101131057A | 2008-02-27 | |||
| CN102071844A | 2011-05-25 | |||
| CN202866406U | 2013-04-10 | |||
| CN203821994U | 2014-09-10 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
Download PDF: