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Title:
LOCK MECHANISM FOR DOOR
Document Type and Number:
Japanese Patent JP2010180628
Kind Code:
A
Abstract:

To provide a lock mechanism for a door in which the inner space of a lock box is effectively utilized by reducing the number of parts and a damping lever functions quickly.

In this lock mechanism for a door, the front end of a lock lever pivotally supported in the lock box locks a latch member when locking. The center part of a pendulum stopper is pivotally supported on a second pivot shaft. The pendulum stopper is configured in such a manner that the top end having a weight portion is brought into contact with a support member while being always biased so as to be kept in a predetermined attitude by the spring force of a pendulum spring wrapped around a second pivot shaft. The bottom end of the pendulum stopper faces the gap between a horizontal contact portion provided to the front end of the lock lever 5 and a first pivot shaft. When the predetermined attitude of the pendulum stopper is collapsed by a torque during the excitation, the bottom end quickly blocks the contact portion, and stops the rotation of the lock lever in the unlocking direction.


Inventors:
SHIMOI OSAMU
Application Number:
JP2009000025589
Publication Date:
August 19, 2010
Filing Date:
February 06, 2009
Export Citation:
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Assignee:
MIWA LOCK KK
International Classes:
E05B55/12; E05B47/06; E05B65/06
Domestic Patent References:
JP2006097456A2006-04-13
JP2007332648A2007-12-27
JPH08184228A1996-07-16
Attorney, Agent or Firm:
Mitsuyasu Miura



 
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