CYLINDER LOCK - ALPHA CORP

Title:

CYLINDER LOCK

Document Type and Number:

WIPO Patent Application WO/2014/196494

Kind Code:

A1

Abstract:

The purpose of the present invention is to provide a cylinder lock having excellent anti-theft properties and which does not readily become inoperable as a result of tampering, etc. The cylinder lock has a plug (3) capable of rotation operation using an authentic unlocking key, said plug (3) being inserted inside a plug insertion hole (2) in a case (1). Provided in the case (1) are: a first restricting section (5) that locks to a first stopper (4) formed in a front end section of the plug (3) and restricts movement of the plug (3) towards the rear; and a second restricting section (7) that locks, as a result of the plug (3) moving towards the rear, to a second stopper (6) formed in a rear end section of the plug (3) and restricts the rotation of the plug (3). A fuse section (8) that breaks as a result of a prescribed torsional load is provided in an intermediate section between the first stopper (4) and the second stopper (6) in the plug (3).

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Inventors:

KISO TOSHIKAZU
YOSHIZAWA TAKASHI
WATANUKI YOSHIO

Application Number:

PCT/JP2014/064585

Publication Date:

December 11, 2014

Filing Date:

June 02, 2014

Export Citation:

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Assignee:

ALPHA CORP (JP)

International Classes:

E05B15/00; B60R25/021; B60R25/22; E05B29/04; E05B83/00

Foreign References:

JP4884282B2	2012-02-29
JPH09254844A	1997-09-30
JP3330728B2	2002-09-30
JPH0512558U	1993-02-19
JP4665248B2	2011-04-06
JPH09254844A	1997-09-30

Other References: