CN2130881Y

CN2130881Y - Safety lock with cipher keyhole

Info

Publication number: CN2130881Y
Application number: CN 92202872
Authority: CN
Inventors: 乐厚荣; 梁明; 张继宁; 吴盛文; 于彤
Original assignee: 乐厚荣
Priority date: 1992-02-19
Filing date: 1992-02-19
Publication date: 1993-04-28
Anticipated expiration: 2002-02-19

Abstract

The utility model relates to a safety lock with cipher keyhole. After the utility model is improved slightly on the basis of the existing puzzle lock for safe, a casing and a barrier chip are arranged, the safety lock with cipher keyhole is used to match with the built-in lock of the existing door and can be used to shelter the keyhole of the built-in lock to prevent other people who do not know cipher from opening the door by a key, and simultaneously, the keyhole can be protected from clogging and damage. The lock can also be used singly without matching with the built-in lock of the gate.

Description

Safety lock with cipher keyhole

The utility model belongs to a kind of coded lock, and main and existing the supporting use of built-in lock also can be used as independent coded lock and uses.

Existing various built-in lock, its keyhole exposes, and is often filled in foreign matter by child or other people in keyhole and causes destruction, perhaps lock is opened with copied key by others, and is very dangerous.

At the above-mentioned shortcoming of built-in lock, the purpose of this utility model is: be to design and a kind ofly can protect the built-in lock lockhole, can prevent the password safety lock that uses copied key arbitrarily built-in lock to be opened again.

The utility model is realized with following scheme: it is on the lock body of existing strongbox coded lock, special housing and base plate have been assembled, the slip washer of in housing, having packed into, the slight sound when preventing to place to sign indicating number causes that password is broken to be known, opened a plurality of rectangle shallow slots again on the driving wheel of coded lock, making surreptitiously, the person can not penetrate password with audition.

Be elaborated below in conjunction with embodiment accompanying drawing of the present utility model.

Fig. 1 is the utility model embodiment sectional structure chart (accompanying drawing can make an abstract)

Fig. 2 is the vertical view of Fig. 1

A figure is the driving wheel of the utility model lock body among Fig. 3; B figure is the left view of a figure.

C figure is that driven pulley, the d figure of the utility model lock body are the left view of c figure among Fig. 4.

Referring to Fig. 1: password swing handle 7 is fixed on the housing 3 with set bolt 8, end in addition at password swing handle 7 is loaded onto driven pulley 4,5 and the driving wheel 6 that has code pins 9 successively, and be separated by with pad betwixt, fixing with pin 10 again, the slip washer 1 of packing in housing 3 then is at last with base plate 2 back covers.

Referring to Fig. 2: the circular hole 11 on the base plate is in order to corresponding with the built-in lock keyhole that matches, and 6 installing holes 12 are in order to being installed in lock body on the door, and number 13 is as checks cipher, and the slip washer moved keyhole is hidden or expose.

Referring to Fig. 3 Fig. 4: a figure is the driving wheel of lock body, has 9 code holes 1 on it; 1 elongated slot 2 can be for the turnover of slip washer; A plurality of rectangular channels 3 are to state puzzled key person, not during reason rotational password swing handle, the slight sound that produces because of notch causes the broken knowledge of password, b figure is the left view of a figure, jack 4 usefulness so that driving wheel and password swing handle fix, c figure is the lock body driven pulley among Fig. 4, the through hole 6 that has

notch

5 and 9 code holes 7 on it and be connected with the password swing handle.Open and leading, a plurality of code holes on the driven pulley in order to lay code pins on the hole one of therein, when changing the code pins position, different passwords just can occur and select.

During use, by installing hole 12 the utility model is installed on the door, and make circular hole 11 corresponding with former built-in lock keyhole, rotational password swing handle 7 to going out predetermined cipher, makes three notch correspondences of 2 driven pulleys of 1 driving wheel, moving the slip washer makes it enter three notches, the built-in lock keyhole exposes, and promptly available key operated built-in lock is opened door.When locking the door, move slip washer 1 outer moving, cover the built-in lock keyhole in the circular hole 11; arbitrarily the rotational password swing handle makes three notch dislocation; the slip washer can not move, thereby has protected built-in lock keyhole safety, and makes the stranger who does not grasp password can't be with the key door of performing fighting.

This cipher key hole safety lock not only can be gone up the supporting use of built-in lock with existing door, and can design the coded lock of polytype and different purposes, to be applicable to family, storehouse, the door of multiple occasion such as bank, window, bin, drawer etc., application prospect is considerable.

Claims

1, a kind of cipher key hole safety lock of forming by password swing handle 7, driving wheel 6, driven pulley 4,5, code pins 9, set bolt 8, it is characterized in that housing 3 and base plate 2 have been installed on the lock body, the slip washer 1 of in housing, having packed into.

2, cipher key according to claim 1 hole safety lock is characterized in that on the driving wheel of lock body, has opened a plurality of rectangular channels 3 except that elongated slot 2 again.