CN2597630Y

CN2597630Y - Double-bolt anti-inserting anti-picking lock

Info

Publication number: CN2597630Y
Application number: CNU022658823U
Authority: CN
Inventors: 管中立
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-28
Filing date: 2002-07-28
Publication date: 2004-01-07
Anticipated expiration: 2012-07-28

Abstract

A double tongue insertion and pry protection lock is provided. The utility model comprises a lock body and a lock buckle; wherein, the lock body is provided with a retractable lock tongue, an insulation device, and a door opening knob. the utility model is characterized in that the lock tongue takes a double tongue shape, wherein, the double tongue is provided with a lock tongue hook in the middle; and the lock tongue hook is connected with the double tongue by a hook positioning pin, while the end of the lock tongue hook is against a tower reed; and the lock tongue in the lock body takes a horizontal U shape; while the double tongue connection sheet is formed with two connection tail sheets at the back part, wherein, the connection tail sheet is provided with a lock tongue torsion spring at the upper face, while the insulation positioning convex block is arranged at the lower end face; and the lock tongue torsion spring and the tower reed are positioned on a bottom board positioning column; the lock buckle is provided with two grooves corresponding to the lock tongue. The utility model using the double tongue structure solves the technical problem of insertion and pry protection; after provided with the lock tongue hook, the utility model realizes the functions of the current spring door lock of closing the door randomly, thus the utility model has the advantages of convenient usage and reasonable structure.

Description

Two tongue anti-plug pick-proof locks

[affiliated technical field]

The utility model relates to a kind of spring type door lock.

[background technology]

Existing spring type door lock generally is made up of lock body and snap close.Lock body is installed on the door, and it is made of telescopic dead bolt, safeties, the knob that opens the door etc., and the dead bolt outside is a ramp structure, is convenient to shut the door after you.Snap close is installed on the doorframe, and the dead bolt place has groove relatively, cooperates with dead bolt to reach the purpose of locking a door.But, there is the defective of theftproof performance difference in existing door lock, that is: the user goes out or h.d., if just shut the door after you, and do not use the insurance knob to insure, under external force, as: with thin type card-like article with certain degree of hardness, answer back to dead bolt through crack between a door and its frame, just can oppress dead bolt and make and contract in the dead bolt and, reach the purpose of making a forcible entry into door-lock opening.

[summary of the invention]

Have the deficiency that can not effectively prevent to open through thin type card-like article door for solving existing catch-bolt, the utility model provides a kind of two tongue anti-plug pick-proof locks of novel structure, has characteristics easy to use, that the anti-plug performance is good.

Task of the present utility model is finished by following technical proposals:

The structure of this pair of tongue anti-plug pick-proof lock comprises lock body and snap close, be equipped with telescopic dead bolt, safeties on the lock body, knob opens the door, its structural feature is: dead bolt is two tongues, be equipped with the dead bolt hook in the middle of two tongues, the dead bolt hook is connected with two tongue braces of dead bolt through dead bolt hook dowel, and its end offsets with a tower spring; Dead bolt in lock body inside is horizontal " U " font, and two tongue braces rear portion forms two and connects cauda, connects the cauda upper surface and is equipped with the dead bolt torsion spring, and the lower surface is provided with the insurance locating convex block, and dead bolt torsion spring, tower spring are positioned on the base plate reference column; Corresponding with dead bolt, have dual-cavity on the snap close; Be provided with positioning plate at the lock body inner bottom part.

Beneficial effect is: utilize the dead bolt of two tongue structures, solved the technical problem of anti-plug pick-proof.After setting up the dead bolt hook, realized the function that existing catch-bolt can be shut the door after you, therefore, the utility model product has advantage easy to use, rational in infrastructure.

[drawing explanation]

Fig. 1 is the lock body structure schematic diagram after embodiment of the utility model opens base plate;

Fig. 2 is for along the structural representation after the A-A line dissects among Fig. 1;

Fig. 3 is the structural representation of dead bolt hook dowel;

Fig. 4 is the structural representation of dead bolt hook.

[specific embodiment]

The utility model is described in further detail by embodiment below in conjunction with accompanying drawing:

Sequence number is represented respectively among the figure: lock body 1 connects cauda 2, the knob 3 that opens the door, base plate reference column 4, dead bolt torsion spring 5, screw 6, positioning plate 7, dead bolt 8, dead bolt hook 9, two tongue braces 10, safety fastener 11, brace locating hole 12, dististyle 13 before the safety fastener, tower spring 14, stage clip 15, dowel upper end 16, dowel bottom 17, tower spring link 18, the dead bolt portion 19 that walks, the dead bolt slope 20 that walks, dead bolt hook front end 21.

Referring to Fig. 1 to Fig. 4.The structure of this pair of tongue anti-plug pick-proof lock comprises that (the accompanying drawing end provides buckle structure figure for lock body 1 and snap close, it is having dual-cavity with dead bolt 8 corresponding sections), be equipped with telescopic two columniform dead bolts 8, safeties, the knob 3 that opens the door on the lock body 1, safety fastener 11.

The centre of two dead bolts 8 is equipped with dead bolt hook 9, dead bolt hook front end 21 is the same with dead bolt 8, stretch out lock body 1 through slotted eye independently, the middle part is connected through brace locating hole 12 with two tongue braces 10 of dead bolt 8 through dead bolt hook dowel 16, and it is terminal to offset with a tower spring 14.Dead bolt 8 in lock body 1 inside is horizontal " U " font, and two tongue braces 10 rear portions form two and connect cauda 2, connect cauda 2 upper surfaces and are equipped with dead bolt torsion spring 5, and the lower surface is provided with the insurance locating convex block.The insurance locating convex block matches with the preceding dististyle 13 of safety fastener 11, reaches the purpose of location dead bolt 8.Dead bolt torsion spring 5, tower spring 14 are positioned on the base plate reference column 4.Be provided with positioning plate 7 at lock body 1 inner bottom part.

Its operating principle of brief description:

1, dead bolt is under inactive situation, because the effect of dead bolt torsion spring is stretched out outside the lock body dead bolt;

2, the dead bolt hook is because the elastic force effect of tower spring, dead bolt hook front end is stretched out outside the lock body, at closing time, when dead bolt hook front end is run into the snap close plane, the compression of tower spring, make dead bolt hook indentation lock body, Men Kaihou is because the effect of tower spring force makes dead bolt hook front end stretch out outside the lock body again.

3, dead bolt is the indentation lock body under the operation of the key or the turn-knob that opens the door, when flushing with the lock body plane, dead bolt hook dowel is along with dead bolt moves, when dead bolt hook dowel arrives dead bolt hook position point, because the stage clip effect presses down dead bolt hook dowel, and fasten dead bolt (at this moment, the dowel bottom of dead bolt hook dowel falls into the positioning plate step), can not stretch out automatically under the dead bolt inoperation situation, only be subjected under the external force effect in the indentation lock body at dead bolt hook front end, make the stage clip compression withdraw from the dead bolt position point of dead bolt hook gradually because the slope effect promotes the dead bolt dowel, dead bolt promptly ejects automatically.

Claims

1, a kind of pair of tongue anti-plug pick-proof lock, its structure comprises lock body (1) and snap close, be equipped with telescopic dead bolt (8), safeties, the knob that opens the door (3) on the lock body (1), it is characterized in that: dead bolt (8) is two tongues, be equipped with dead bolt hook (9) in the middle of two tongues, dead bolt hook (9) is connected with two tongue braces (10) of dead bolt (8) through dead bolt hook dowel (16), and its end offsets with a tower spring (14); The dead bolt (8) inner at lock body (1) is horizontal " U " font, two tongue braces (10) rear portion forms two and connects cauda (2), connect cauda (2) upper surface and be equipped with dead bolt torsion spring (5), the lower surface is provided with the insurance locating convex block, and dead bolt torsion spring (5), tower spring (14) are positioned on the base plate reference column (4); Corresponding with dead bolt (8), have dual-cavity on the snap close; Be provided with positioning plate (7) at lock body (1) inner bottom part.

2, a kind of pair of tongue anti-plug pick-proof lock as claimed in claim 1, it is characterized in that: the shape of cross section of dead bolt (8) is cylindrical.