Title:
THREE-CLAMP TYPE LOCKSET
Document Type and Number:
WIPO Patent Application WO/2009/000135
Kind Code:
A1
Abstract:
A three-clamp type lockset comprises a lock shell (1), a three-clamp leaf spring (2) and an eccentric wheel (3). The leaf spring (2) is installed in the lock shell (1) and has a hole (12) which is adapted to the eccentric wheel (3). The leaf spring (2) moves back and forth by the rotational movement of the eccentric wheel (3) in the hole (12). A holding boss (7) for supporting the leaf spring (2) is set in the lock shell (1). The eccentric wheel (3) is a sector eccentric wheel, the shape of the hole (12) which is adapted to the eccentric wheel (3) is a combination of a rectangle and a semi-circle. The inner end face of the holding boss (7) is an inclined face, which is inclined upwardly at the orientation where the leaf spring (2) protrudes. The present three-clamp type lockset, when the eccentric wheel (3) rotates 180° clockwisely for locking profile bars, the side face of the sector eccentric wheel contacts the rectangle's linear side of the hole of the leaf spring closely. In this way, the tension arm for stopping is greater than the tension arm for stopping of the conventional same type lockset which comprises a circle eccentric wheel or an eccentric wheel having a stopping boss. The present lockset increases the side stopping moment effectively and reduces the possibility of the failure.
Inventors:
LIU LIANPING (CN)
HE KAIFENG (CN)
HE KAIFENG (CN)
Application Number:
PCT/CN2008/000277
Publication Date:
December 31, 2008
Filing Date:
February 02, 2008
Export Citation:
Assignee:
CHANGZHOU LINGTONG EXHIBITION (CN)
LIU LIANPING (CN)
HE KAIFENG (CN)
LIU LIANPING (CN)
HE KAIFENG (CN)
International Classes:
F16B7/04; A47F3/00; F16B12/32
Foreign References:
CN2833208Y | 2006-11-01 | |||
CN2441895Y | 2001-08-08 | |||
CN2514158Y | 2002-10-02 | |||
US4815178A | 1989-03-28 | |||
DE4012332A1 | 1991-02-14 | |||
CN101105197A | 2008-01-16 | |||
EP0166794A1 | 1986-01-08 | |||
CN98226976U | 1998-06-08 |
Other References:
See also references of EP 2161462A4
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD. (Nanjing, Jiangsu 8, CN)
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