CN2180743Y

CN2180743Y - Multi-purpose theft-proof lock for single or double wings door

Info

Publication number: CN2180743Y
Application number: CN 93244870
Authority: CN
Inventors: 石国丛
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-11-22
Filing date: 1993-11-22
Publication date: 1994-10-26
Anticipated expiration: 2003-11-22

Abstract

The utility model discloses an anti-theft lock device, which can increase the safety coefficient at the time of locking a single door as well as can independently lock a double door. The anti-theft lock device is mainly composed of a front and a back lock casings and a T-shaped clamping pin which is in the back lock casing; the one-fifth part of the front end of the T-shaped clamping pin is provided with transverse square through hole. After the clamping pin is pushed into the front lock casing by a cam and a connecting rod on a camshaft in the back lock casing, stops in rectangular slots on the left and the right sides of the middle part of the front lock casing can go into the square through hole on the front end of the clamping pin under the pressure of a spring, and the front and the back lock casings are combined together; the reason of the adoption of the structure is that the front and the back lock casings are both installed inside the door, and the clamping pin can not be prized from the gap between the front and the back lock casings; so the utility model is the anti-theft lock with high safety.

Description

Multi-purpose theft-proof lock for single or double wings door

The utility model is a kind of improved safe-guard door lock that single door can be locked double door again of particularly locking.

We lock the method for double door now, generally all are snap close and button nose are followed closely respectively on two fan doors, with padlock two fan doors are linked together then, this way is promptly convenient simply again, but this method must be placed on lock on limit outdoors, and is very easily destroyed, and can only open outside.In order to increase antitheft coefficient, people mostly adopt single door, and using as the patent No. is the theftproof lock of 87204127.1 F5-4 type, it be by be installed on the doorframe back lock housing release three dead bolts, in the preceding lock housing on being installed in doorframe, do not reach antitheft purpose, and can inside and outsidely open again.But such lock can only be used for single door, also will increase many attached assistant engineer's tools and pretty troublesome again with such lock lock double door.

The purpose of this utility model is that a kind of improved anti-theft built-in lock will be provided, and it not only can increase safety factor during single door at lock, and can independently finish the task of lock double door again, promptly antitheftly can inside and outsidely open again.

Task of the present utility model is finished like this, it is made up of preceding lock housing and back lock housing two large divisions, having " T " font that can move forward and backward not sell by connecting rod in the lock housing of back is connected with camshaft, do not sell front end 1/5th places and have a horizontal square through hole and its hollow the communicating of vertical square, be separately installed with handle and lock core in the lock housing inboard, back and the outside, handle can directly be stirred camshaft, when stirring lock core with key, lock core just promotes Xiao not enter preceding lock housing by connecting rod and the cam that the contiguous block that is installed in its inside drives on the camshaft, each side there is an identical square groove at the middle part in preceding lock housing, in groove, have one can before and after the rectangle block that slides, be fixed in the groove by spring, when do not sell out enter entirely before after the lock housing, block just enters under the pressure of spring in the square hole of not selling front end, in lock housing before Xiao not being fixed on, the front and back lock housing is linked to be an integral body, thereby guarantee that it can be not destroyed, reach antitheft purpose.

The utility model is just changed on the basis of former theftproof lock, and part does not almost increase, each component all there is not specific (special) requirements again, most of part all can be cast, without any need for non-ferrous metal, therefore can not increase cost, volume can also size change, both two-sided open type can be made, the form of opening one side can be made again.And all be installed in the inboard of door, thus increase significantly antitheft coefficient, and use again conveniently, do not want any auxiliary tools again.

Below with reference to accompanying drawing the utility model is further described.

Fig. 1 is the sectional view of the utility model along the B-B direction,

Fig. 2 is the sectional view along the A-A direction,

With reference to Fig. 1, Fig. 2

Two rectangle metal backups sliding back and forth (3) are installed in the rectangular slot of the left and right sides, preceding lock housing (1) middle part by wire spring (2), the connecting rod made from two blocks of steel sheets (9) links to each other with camshaft (13), camshaft (13) and oval cam (6) are cast as one, mould the handle (15) of casting or stir camshaft (13) when turning clockwise by contiguous block (11) when using with lock core (14), connecting rod (9) and cam (6) also clockwise rotate, two in the middle of (4) do not sold in " T " font that cam (6) is stronger with steel is that the metallic bond (5) of circular arc promotes forward, with block (3) eject not Xiao the square hole of (4) in, at this moment cam (6) peaks, continue rotating cam axle (13), connecting rod (9) drives not that pin (4) and key (5) move in fluid origin back lock housing (7), do not sell (4) when rotating to extreme position when connecting rod (9) and just withdraw from the preceding lock housing (1) fully.When being rotated counterclockwise camshaft (13), connecting rod (9) and cam (6) promote simultaneously again not Xiao (4) and key (5) enter in the preceding lock housing (1), when cam (6) when rotating to extreme position, key (5) is under the pressure of wire spring (8), withdraw to not selling the rear portion, block (3) just under the pressure of spring (2), enter not Xiao the square hole of (4) front end in, the front and back lock housing is linked to be an integral body.

When key (10) is extracted lock core (14), contiguous block (11) just under the pressure of wire spring (12) and camshaft (13) separately, so that with handle (15) rotating cam axle (13) time, be not subjected to the restriction of lock core (14), successfully switch lock.

Claims

1, theftproof lock of forming by preceding lock housing (1) and back lock housing (7), it is characterized in that having in back lock housing (7) one to have a horizontal square through hole at front end 1/5th places and do not sell (4) with its square longitudinally hollow " T " font that communicates, be connected with camshaft (13) by connecting rod (9), each side have a square block (3) to be fixed in the square groove at the middle part of preceding lock housing (1) by spring (2).

2, it is characterized in that according to the described theftproof lock of claim (1) square hole that block (3) should Xiao (4) front end than not is smaller.

3, it is characterized in that according to claim 1,2 described theftproof locks forward and backward lock housing is not entered and Xiao be linked together in the square hole of (4) front end by block (3).

4, according to claim 1,3 described theftproof locks, it is characterized in that not selling in (4) square hollow and have key (5) fixing by spring (8), and and cam (6) contacted.

5, theftproof lock according to claim 1 is characterized in that camshaft (13) is connected with lock core (14) by contiguous block (11).