CN2164437Y - Robber-proof door lock - Google Patents

Abstract

The utility model discloses an anti-theft door lock, relating to a lock in the field of fixing buildings. The utility model is a door lock with a bolt. The utility model is characterized in that in a well-known door lock, a lock fastener which is originally provided with a short slope is changed into a lock fastener whose part contacting a bolt is provided with a long slope shape. The bolt forms a cylindrical shape, the end face adjacent to the lock fastener is a plane face, and the plane face has the function that when a hard sheet is inserted into the gap between a lock body and the lock fastener, the bolt can not be shifted away; the anti-theft purpose is obtained thereby. In the utility model, the well-know door lock is changed into the anti-theft door lock, the structures of the lock body and a lock core do not need to be changed, and parts do not need to be added. The utility model has the advantages of simple processing, low cost, and convenient change.

Description

Robber-proof door lock

The utility model relates to a kind of lockset in fixed buildings field, is particularly suitable for a kind of safe-guard door lock.

People have designed various locksets for safety, for various theftproof locks have been invented in the safety that increases lockset again, only the disclosed theftproof lock of Chinese patent application just reaches up to a hundred every year, as CN206855OU, discloses a kind of " three dead bolt door locks "; CN2072119U discloses a kind of " anti-theft security lock "; CN207345U discloses a kind of " mechanical cipher key and lock with memory function "; CN2079645U discloses a kind of " safety door breech lock "; CN2089503U discloses a kind of " reed alarming lock " or the like.All these theftproof locks, all existing increases part, processing inconvenience, the problem that cost rises.With regard to the comparatively approaching door lock of technical spirit, promptly pin tumbler lock is made up of a lock body and snap close.An inclined-plane dead bolt is arranged on the lock body, and its end is an inclined-plane, when door is pulled on, and the inclined-plane of dead bolt collision snap close, oppress in the dead bolt retraction lock body, after door was shut, dead bolt ejected, in the insertion snap close, utilize another planar ends retaining of dead bolt on snap close, realize the purpose of locking.This door lock needs only the thin slice with a hard, as saw blade, screwdriver, even identity card or the like, insert from the slit between lock body and snap close, just can utilize the inclined-plane of dead bolt that lock is backed down, lost the effect of door lock, make this door lock seem very dangerous.

The purpose of this utility model is to provide a kind of inclined-plane dead bolt with existing cylinder lock to change the cylindricality dead bolt into; The snap close that will have the oblique angle shape, there is the snap close of a long inclined plane shape at the position of making to collide with dead bolt into.Like this, existing cylinder lock does not add any part, just can become a kind of safe-guard door lock.

The purpose of this utility model is achieved in that the dead bolt with cylinder lock band inclined-plane, make a cylindricality dead bolt that does not have the inclined-plane into, with the short oblique angle of snap close that original snap close and dead bolt are collided, make one into and can oppress long inclined-plane in the cylindricality dead bolt retraction lock body when promptly touching closing the door.After like this door being shut, the cylindricality dead bolt ejects, and inserts in the snap close, realizes the purpose of locking.

Owing to do not have the inclined-plane on the dead bolt,, from the slit of snap close and lock body, insert with a hard sheet, to be blocked by the cylindricality dead bolt, and can not utilize the inclined-plane of original dead bolt to stir dead bolt and will lock unlatching, realize antitheft purpose, and need not change the structure of original lock body, lock core, do not increase part, so, have processing easy, cheap, with original cylinder lock, change over theftproof lock advantage very easily, can be widely used in the place that door, cupboard, cabinet, drawer etc. need the butt locking.

Fig. 1 is the utility model safe-guard door lock, and lock body is installed in the front view on the door-plate inboard.

Fig. 2 is the utility model safe-guard door lock, and lock body is installed in the front view in the middle of the door-plate.

Describe in detail according to the concrete shape that the utility model proposes and the details of combination thereof below in conjunction with accompanying drawing.

On the upright doorframe in the left side, being that the utility model snap close is installed among Fig. 1 .2, on the door-plate of the right level, is the lock body that the utility model dead bolt is installed.

Among Fig. 1:

(1), doorframe

(2), snap close it be original and the short oblique angle of the snap close that has the inclined-plane dead bolt to collide, the novel snap close on long inclined-plane is arranged instead.Closing the door when promptly touching, dead bolt can be run into long inclined-plane, and in the compressing dead bolt retraction lock body.After door shut, dead bolt ejected, and inserted in the snap close, realized the locking purpose.A fixing threaded hole on the suitable position of snap close, is provided with if can be fixed on snap close on the doorframe.

(3), this inclined-plane, snap close inclined-plane is principal character of the present utility model, its chamfer length will can make dead bolt bump on the inclined-plane closing the door when promptly touching.Angle α between this inclined-plane (3) and snap close datum (4) should be in 135 °～155 ° scopes, and the best is 145 °～150 °.

(4), the snap close datum is the plane of a side of snap close (2) the most close lock bodies (7).

(5), the bonnet lock hole dead bolt is promptly realized the locking purpose after inserting this hole.

(6), this dead bolt of dead bolt is a principal character of the present utility model, it is a kind of cylindricality dead bolt that does not have the inclined-plane, it is the dead bolt that cylinder lock is had the inclined-plane, the end face that changes near snap close one side is a plane, make the shape of stretching out the lock body housing parts become a cylinder, as square cylinder or garden shape cylinder etc., the dead bolt drift angle of colliding with the snap close inclined-plane is the dead bolt of a Xiao Yuan angle or chamfering.Dead bolt thickness and dead bolt stretch out the relation between the outer length of lock body, are molecule with thickness, and length is denominator, thickness: the value of length should be greater than 1.

(7), lock body is a kind of door lock, as the lock body of cylinder lock, its external form and internal construction are the common spring lock.

(8), door-plate

(9), key

In sum, a kind of common door lock is used the utility model technology, only the inclined plane shape of dead bolt is transferred on the snap close, and dead bolt becomes the cylindricality dead bolt, and snap close becomes long inclined-plane snap close, has just produced beyond thought anti-theft effect.

Claims (3)

1, a kind of safe-guard door lock is made up of lock body, dead bolt, snap close, lock core, handle and key, it is characterized in that: the dead bolt of cylinder body shape (6) and with the snap close (2) of inclined-plane (3) shape of its butt.

2, safe-guard door lock according to claim 1, the chamfer length that it is characterized in that snap close inclined-plane (3), should can make dead bolt run into the inclined-plane when promptly touching closing the door, the angle α between this inclined-plane (3) and snap close datum (4) be 135 °～155 °, and the best is 145 °～150 °.

3,, it is characterized in that the thickness length ratio value outer with stretching out lock body of dead bolt (6) should be greater than 1 according to the described safe-guard door lock of claim 1 to 2.

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