CN2134463Y

CN2134463Y - Anti-theft door lock

Info

Publication number: CN2134463Y
Application number: CN 92239511
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: 1993-05-26
Anticipated expiration: 2002-10-14

Abstract

The utility model relates to a novel anti-theft door lock. In the lock body, the master bolt connected to master bolt feet is accompanied with a slope; the back of the bolt is equipped with a spring. The auxiliary bolt feet are arranged at the back of the master bolt, and are connected with the auxiliary bolt via a pendulum bar mechanism. A mopping board is connected with the auxiliary bolt feet via a pin; a handle axis is equipped with a cam and a diamond angle; the back of the master bolt is equipped with a lock plate controlled by the lock head. The indoor side is equipped with a safety device, essentially comprising a rotary handle, rotary handle nails, a safety plate, etc. In order to strengthen the resistance to rupture, the lock is designed with a fire-proof plate, an anti-drill piece and an anti-shifting piece; the inner of the lock head is equipped with steel marbles. 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, 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, to overcome the defective that existing safe-guard door lock exists.

This door lock is made up of tapered end and lock body.In the lock body, the main dead bolt 4 that is connected on the main dead bolt pin 5 with screw has an inclined-plane, this dead bolt back is provided with a spring 18, secondary dead bolt pin 3 is contained in main dead bolt 4 back, and be connected with secondary dead bolt by swing-bar mechanism, planker 11 is connected with secondary dead bolt pin 3 by a pin 12, on 9 of the handles cam 8 and water caltrop 10 is housed, and main dead bolt 4 back are provided with a jam plate 15 of being controlled by tapered end.In an indoor side one safeties are housed, this device revolves compositions such as nail 22, safeguards 24 mainly by revolving 21.For strengthening anti-destructive, this lock has designed PLASTIC LAMINATED 41, anti-drilling sheet 43 and anti-plectrum 33, has used the steel pellet shot from a slingshot in tapered end.

The utility model advantage has been to absorb the strong characteristics 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, the anti-performance of pulling out.

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

Fig. 1: assembling drawing of the present utility model

The A-A sectional view of Fig. 2: Fig. 1

Fig. 3: safeties structural representation in the utility model

The left view of Fig. 4: Fig. 3

Fig. 5: tapered end 31 structural representations in the utility model

Fig. 6: anti-sheet 33 assembling drawings that pull out in the utility model

1, goes up secondary dead bolt, 2, upper pendulum bar, 3, secondary dead bolt pin, 4, main dead bolt, 5, main dead bolt pin, 6, draft link, 7, following secondary dead bolt, 8, cam, 9, handle, 10, water caltrop, 11, planker, 12,13, pin, 14, bumper bar, 15, jam plate, 16, spring, 17, cam, 18, spring, 21, revolve handle, 22, revolve, 23, spring nail, 24, safeguard, 25, the handle handle, 31, tapered end, 32, spring, 33, the anti-sheet that pulls out, 41, PLASTIC LAMINATED, 42, lock core, 43, anti-drilling sheet.

Fig. 1 and Fig. 2 are shown the opening of this new door lock, the chamfered portion of at this moment main dead bolt 4 exposes lock as a movable lug, promptly when it is subjected to from left to right pressure, spring 18 shrinks, main dead bolt 4 and main dead bolt pin 5 move to right, and are retracted in the lock body, in case pressure is cancelled, main dead bolt pin 5 and main dead bolt 4 move to left under the effect of spring 18, and main dead bolt 4 stretches out the lock body.Under this state, do not need at closing time door lock is done any operation, main dead bolt just can enter the dead bolt storehouse that is contained on the doorframe, for adapting to left and right opening, be connected with screw between the upper and lower various door types of opening, main dead bolt and dead bolt pin, the user can be according to the bevel direction of door type adjustment movable lug of oneself.When opening the door, clockwise rotate handle 9, water caltrop 10 drives main dead bolt pin 5 and moves to right, and regains movable lug.

When locking a door, rotate counterclockwise handle 9 and drive water caltrop 10 and cam 8 rotations, earlier with on planker 11 tops, make elongated slot aim at pin 12 on the secondary dead bolt pin 3, stir main dead bolt pin 5 and drive secondary dead bolt angle 3 by water caltrop 10 then and move to left by pin 13, with main dead bolt pin 4 whole lock bodies of releasing, will go up secondary dead bolt 1 and down secondary dead bolt 7 release lock bodies by the upper pendulum bar 2 and the draft link 6 that are connected on the secondary dead bolt pin 3 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 9, the opposite direction when each mechanism is all along above-mentioned locking a door in the lock is moved, upper and lower secondary dead bolt 1,7 is regained, simultaneously, main dead bolt 4 withdrawals, and under the effect of spring 18, only expose its chamfered portion, become a movable lug.

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 17 on the lock core 42 with key, cam 17 at first pushes bumper bar 14 and makes it clockwise direction and turn an angle in rotation process, decontrol jam plate 15, cam 17 is rotated further, and stirs jam plate 15 and moves down into main dead bolt pin 5 back, prop up main dead bolt pin 5, make it and to move to right.After jam plate 15 was in place, lock core was rotated further, and decontroled bumper bar 14, and bumper bar 14 rotates counterclockwise under the effect of spring 16, fastens jam plate 15, made it and can not return, and guaranteed the reliability of locking.After door lock was locked, because major and minor dead bolt pin all can not move to right, two secondary dead bolts can not be withdrawn, and main dead bolt 4 can not become can become movable lug, and handle also can't rotate.

Door lock described in the utility model, can adorn safeties in its indoor side, as shown in Figure 3 and Figure 4, twisting is revolved 21, revolves nail 22 drive safeguards 24 are clockwise rotated in direction as shown, its ledge inserts handle in the 25 top keyways, make handle 9 not rotate, reach insurance purpose, after handle 9 pins, under the effect of spring 23, the safeties self-locking.

Be to improve the anti-destructive of tapered end, the utility model has used the steel pellet shot from a slingshot in tapered end, and in the indoor side of tapered end one PLASTIC LAMINATED 41 is housed as shown in Figure 5, and an outdoor side is equipped with an anti-drilling sheet 43 with protection lock core 42.

For improving the anti-destructive of door lock, the utility model is provided with an anti-pulling device, as shown in Figure 6, under the not destroyed situation of tapered end 31, the anti-sheet 33 that pulls out is close on tapered end 31, in case tapered end goes to pot under spring 32 effects, the anti-sheet 33 that pulls out rotates under spring 32 effects, the anti-little hook that pulls out on the sheet 33 catches on jam plate 15, like this, even under the destroyed situation about being removed of tapered end, can guarantee that also jam plate is in latched position, door lock can not be opened.

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 can not be subjected to bigger stress when so just having solved shutter door.

The utility model door lock when not locking a door usually, keeps a movable lug, plays windbreak function.

Claims

1, a kind of safe-guard door lock, form by tapered end and lock body, it is characterized in that locking that main dead bolt 4 has an inclined-plane in the body, this dead bolt back is provided with a spring 18, secondary dead bolt pin 3 is contained in main dead bolt 4 back, and is connected with secondary dead bolt by swing-bar mechanism, and planker 11 is connected with secondary dead bolt pin 3 by a pin 12, on 9 of the handles cam 8 and water caltrop 10 are housed, main dead bolt back is provided with a jam plate 15 by tapered end 31 controls.

2, the described safe-guard door lock of claim 1 is characterized in that main dead bolt 4 usefulness screws are connected on the main dead bolt pin 5.

3, the described safe-guard door lock of claim 1 is characterized in that in an indoor side one safeties being housed, and this device is mainly by revolving 21, revolving nail 22, safeguard 24 etc. are formed.

4, the described safe-guard door lock of claim 1 is characterized in that in an indoor side of tapered end 31 PLASTIC LAMINATED 14 being housed, and an outdoor side is equipped with anti-drilling sheet 43, and the steel pellet shot from a slingshot is equipped with in tapered end 31 inside.

5, the described safe-guard door lock of claim 1 is characterized in that being equipped with below the jam plate 15 an anti-pulling device, and this device is mainly by spring 32 with prevent that pulling out sheet 33 forms.

6, the described safe-guard door lock of claim 1 is characterized in that on the jam plate 15 bumper bar being housed.