Title:
A LOCK BODY STRUCTURE PREVENTING WRINGING A LOCK CYLINDER AND AN INSTALLATION METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2005/068755
Kind Code:
A1
Abstract:
A lock body structure preventing wringing lock cylinder and an installation method thereof, comprising: a pushlock head (1) arranged in mounting hole (2); a false fixation is provided between the pushlock head (1) and the mounting hole (2), the joint strength of which is between the torque force of a key when the lock is normally opened and the torque force of the lock cylinder when it is wrung to be broken. When the lock is normally opened with the key, the pushlock head (1) is fixed relative to the mounting hole (2), but when the lock body is wrung, the pushlock head (1) rotates freely relative to the mounting hole (2). The present invention can thoroughly resolve the question that the lock cylinder is damaged by reamer type tools so that the lock would be unlocked illegally, so locking is more practical and reliable.
Inventors:
QIN CAIDONG (CN)
Application Number:
PCT/CN2004/001124
Publication Date:
July 28, 2005
Filing Date:
September 29, 2004
Export Citation:
Assignee:
QIN CAIDONG (CN)
International Classes:
E05B17/14; E05B65/52; E05B67/00; (IPC1-7): E05B17/14
Domestic Patent References:
| WO2000037754A1 | 2000-06-29 |
Foreign References:
| CN2270095Y | 1997-12-10 | |||
| CN2364149Y | 2000-02-16 | |||
| CN2381724Y | 2000-06-07 | |||
| JPH06200666A | 1994-07-19 |
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (Beijing 8, CN)
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