Code-variable lock of safety door

The present invention relates to a kind of mechanical lock including a slot wallboard, a lock strike, a bullet plate, a lock cylinder tongue and a spring seating block, connected with each other in turn, wherein the lock cylinder tongue is arranged in the middle and moves in stretch mode; bullet-hol...

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Bibliographic Details
Main Author LIAO GUOWEI
Format Patent
LanguageChinese
English
Published 16.11.2011
Subjects
ACCESSORIES THEREFOR
FIXED CONSTRUCTIONS
HANDCUFFS
KEYS
LOCKS
SAFES
WINDOW OR DOOR FITTINGS
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Summary:The present invention relates to a kind of mechanical lock including a slot wallboard, a lock strike, a bullet plate, a lock cylinder tongue and a spring seating block, connected with each other in turn, wherein the lock cylinder tongue is arranged in the middle and moves in stretch mode; bullet-holes are arranged randomly at the component plane and each hole is mutually aligned for exchanging different coding piece of the holes arranging structure to change the coding structure of a lock cylinder with a corresponding key for opening, thus changing unlocking keys at any time to prevent great harm of key-making stealthily and losing keys, and requiring no exchange of new lockset. A safe-guard chain door lock matched with the lock cylinder is characterized in that: a driving block is arranged on a forward half shaft and a back half shaft; the other end of the forward and the back half shaft is extended out the lock shell and is provided with a handle which can be moved only when the key is inserted for opening
Bibliography:Application Number: CN2006120813