CN2130188Y

CN2130188Y - Anti-theft door lock

Info

Publication number: CN2130188Y
Application number: CN 92239510
Authority: CN
Inventors: 王万愚; 张维丽; 王凤兰; 陈克强
Original assignee: BEIJING BUILDING LOCK FACTORY
Current assignee: BEIJING BUILDING LOCK FACTORY
Priority date: 1992-10-14
Filing date: 1992-10-14
Publication date: 1993-04-21
Anticipated expiration: 2002-10-14

Abstract

The utility model relates to a novel anti-theft door lock, comprising a lock head and a lock body. The lock body is equipped with a handle whose axis is fixed with a deflector rod; the other end of the deflector rod corresponds with feet of the master bolt connected with an auxiliary bolt through a pendulum bar. The back of the master bolt is equipped with a lock plate controlled by the lock head; the lock plate can be equipped with a safety lever. The lock head can adopt a general type bi-lock head in the international standard, and the outdoor side is equipped with steel marbles and an anti-drill plate. The door lock keeps the advantage of strong damage proof capability of the tri-orientation door lock, solves the problem that the key is stressed fiercely when the lock is opened or closed, and improves the anti-drill ability.

Description

Anti-theft door lock

The utility model relates to a kind of novel anti-theft door lock.

Existing safe-guard door lock mostly is the door lock of folk prescription position, promptly can only door lock be lived by one or one group of dead bolt being in juxtaposition, and anti-damage performances such as this door lock is crashproof, pick-proof are poor, can't satisfy user's needs.Therefore, the Three-bearing safe-guard door lock occurs, promptly on the basis of folk prescription position door lock, increased by two secondary dead bolts, when locking a door, major and minor dead bolt is lived door lock from a side and the upper and lower both sides of door simultaneously, makes the performance such as crashproof, pick-proof of door lock obviously be better than folk prescription position door lock.But the increase of dead bolt is especially locked a door along multi-direction, and the motion of mechanism resistance increases in causing locking, and during shutter door, is subjected to very high pulling torque on the key, cause the key distortion easily even fracture, this drawbacks limit the extensive use of Three-bearing door lock.

The purpose of this utility model is to provide a kind of novel anti-theft door lock, and this door lock has absorbed the strong advantage of Three-bearing door lock survivability, has solved when opening and closing lock the bigger problem of stress on the key again.Perfect simultaneously anti-drilling performance.

The utility model is made up of tapered end and lock body.Be provided with a handle 12 on one's body at lock, be fixed with a driving lever 11 on 12 of the handles, the other end of driving lever 11 cooperates with main dead bolt pin 4, main dead bolt pin is by upper and

lower fork

2,5 with upper and lower secondary dead bolt 1,6 connect, and are provided with a jam plate 10 by cam 7 controls at main dead bolt 3 rears, on this jam plate 10 bumper bar 8 can be housed.Tapered end 21 can be selected the international standards organization standard generalized markup type twin-lock head for use, and in an outdoor side steel pellet shot from a slingshot and anti-drilling sheet 22 is housed.

Below in conjunction with description of drawings structure of the present utility model and operating principle.

Fig. 1, the utility model assembling drawing

Fig. 2, anti-drilling sheet 22 assembling schematic diagrames in the utility model

1, goes up secondary dead bolt, 2, upper pendulum bar, 3, main dead bolt, 4, main dead bolt pin, 5, draft link, 6, secondary dead bolt down, 7, cam, 8, bumper bar, 9, spring, 10, jam plate, 11, dead man, 12, handle, 21, tapered end, 22, anti-drilling sheet, 23, Tou Quan

Figure 1 shows that three dead bolts all do not stretch out the state of locking body when locking a door.When locking a door, rotate counterclockwise handle 12 and drive driving lever 11 rotations, stir main dead bolt pin 4 and move to left, main dead bolt 3 is released the lock bodies, will go up secondary dead bolt 1 and down secondary dead bolt 6 release lock bodies by the upper pendulum bar 2 and the draft link 5 that are connected on the main dead bolt pin 4 simultaneously.Realized that Three-bearing lives door lock simultaneously.In this state, door lock is not locked as yet, as long as clockwise rotate handle, the opposite direction when each mechanism is all along above-mentioned locking a door in the lock is moved, and main dead bolt 3 and upper and lower secondary dead bolt 1,6 are regained, and door is opened.

Under the state on the door lock, available key is with door lock locking or relieving, its course of work is as follows: turn cam 7 on the lock core with key, cam 7 at first pushes bumper bar 8 and makes it clockwise direction and turn an angle in rotation process, decontrol jam plate 10, cam 7 is rotated further, and stirs jam plate 10 and moves down into main dead bolt pin 4 back, prop up main dead bolt pin 4, make it and to move to right.After jam plate 10 was in place, lock core was rotated further, and decontroled bumper bar 8, and bumper bar 8 rotates counterclockwise under the effect of spring 9, fastens jam plate 10, and jam plate 10 can not be return, and guaranteed the reliability of locking.After door lock was locked, because main dead bolt pin 4 can not move to right, each dead bolt can not be withdrawn, and handle also can't rotate.

For improving anti-destructive.The utility model is provided with an anti-drilling sheet 22 between head circle 23 and tapered end 21 as shown in Figure 2, plays the effect of protection tapered end.

The utility model is controlled the action of each dead bolt with handle, and key only is used for controlling bumper bar and these two parts that the resistance of motion is very little of jam plate, and key is subjected to the problem of big stress when having solved shutter door like this.Strengthened the anti-damage performance such as anti-drilling, pick-proof of door lock simultaneously.

Claims

1, a kind of safe-guard door lock, form by tapered end and lock body, it is characterized in that being provided with a handle 12 on one's body at lock, be fixed with a driving lever 11 on the handle axle, the other end of driving lever 11 cooperates with main dead bolt pin 4, main dead bolt pin 4 is connected with following secondary dead bolt 6 with last secondary dead bolt 1 with draft link 5 by upper pendulum bar 2, is provided with a jam plate 10 by tapered end 21 controls at main dead bolt 3 rears.

2, the described safe-guard door lock of claim 1 is characterized in that tapered end 21 is the international standards organization standard generalized markup type twin-lock head, and in an outdoor side steel pellet shot from a slingshot and anti-drilling sheet 22 is housed.

3, the described safe-guard door lock of claim 1 is characterized in that being equipped with on the jam plate 10 bumper bar 8.