CN101832058A

CN101832058A - Theft-proof bolt guard block structure of door lock

Info

Publication number: CN101832058A
Application number: CN 201010162374
Authority: CN
Inventors: 夏明强; 叶双全
Original assignee: CHONGQING MEIXIN (GROUP) Co Ltd
Current assignee: Chongqing Meixin Maisen Door Co., Ltd.
Priority date: 2010-04-30
Filing date: 2010-04-30
Publication date: 2010-09-15
Anticipated expiration: 2030-04-30
Also published as: CN101832058B

Abstract

The invention provides a theft-proof bolt guard block structure of a door lock, which comprises a bolt guard block, a fixed box, a pressure spring and an insertion preventing box. The fixed box is provided with at least one opening, the two sides of the opening are provided with flanging, the flanging is lapped and fixed with the inside surface of the bolt guard block, a positioning lug boss is arranged on the inner side of the bottom surface of the fixed box, and the pressure spring is sleeved outside the positioning lug boss. The insertion preventing box is provided with at least one opening, one of two sides of the opening is provided with a right-angled flanging, and the other side of the opening is provided with an oblique flanging. The insertion preventing box is arranged in the fixed box and obliquely arranged in a square hole of the bolt guard block, the right-angled flanging of the insertion preventing box is lapped on the inside surface of the bolt guard block, the oblique flanging of the insertion preventing box is exposed from the bolt guard block, and the bottom surface of the insertion preventing box is jacked by the top end of the pressure spring in the fixed box. The structure can effectively prevent the door lock from being opened by inserting a card so as to ensure the safety of a user.

Description

A kind of theft-proof bolt guard block structure of door lock

Technical field

The invention belongs to the door lock anti-theft technique.

Background technology

Security door can be stirred the oblique tongue of lockset with plastic cards from door leaf and the insertion of doorframe slit and just security door can be opened if main dead bolt is not locked on the market a few days ago, makes it lose due function, and the safety that this will have a strong impact on the user causes bad influence.

Summary of the invention

The objective of the invention is to deficiency, propose a kind of theft-proof bolt guard block structure of door lock, effectively prevent from illegally to open door leaf at the prior art existence.

Technical solution of the present invention is as follows:

A kind of theft-proof bolt guard block structure of door lock, its dead bolt with the lockhole outside that is installed on the doorframe protects piece, also includes fixed bin, stage clip and anti-plug box.

Wherein fixed bin has an opening at least, in the both sides of described opening flange is arranged, and described flange and dead bolt protect the medial surface overlap joint of piece and fix, and is provided with a location boss in inboard, fixed bin bottom surface, and described compression spring sleeve is outside positioning boss.

Described anti-plug box has an opening at least, and one side has the right angle flange in the both sides of described opening, and a side has oblique flange.

Described anti-plug is box-packed in fixed bin, and angle mount is gone into dead bolt and is protected in the square hole of piece, its right angle flange is overlapped on the medial surface that dead bolt protects piece, the activity surplus is pushed down and left to the side of box of being fixed, its oblique flange is exposed at dead bolt outward and protects the piece outside, its bottom surface is withstood by the stage clip top in the fixed bin, and described oblique flange exposes to dead bolt and protects the width of the height in the piece outside greater than crack between a door and its frame under the effect of stage clip.

Advantage of the present invention is as follows:

1, simple in structure, reliable in function.

2, do not influence the use and the outward appearance of door.

3, prevent that effectively card from inserting unlatching, guarantees user's safety.

4, cost is low, is convenient to processing.

Description of drawings

Fig. 1 is the structure explosive view of a kind of specific embodiment of the present invention;

Fig. 2 is the front schematic view after the structure of Fig. 1 is assembled;

Fig. 3 is the schematic rear view after the structure of Fig. 1 is assembled;

Fig. 4 is that structure shown in Figure 1 is installed in the state diagram (when closing) on the door.

The specific embodiment

Describe structure of the present invention in detail below in conjunction with accompanying drawing:

As shown in Figure 1, the major part of this theft-proof bolt guard block structure of door lock has fixed bin 1, stage clip 2, anti-plug box 3 and dead bolt to protect piece 4.

In conjunction with Fig. 2 and Fig. 3 as seen, fixed bin 1 is the cuboid box of an opening, and there is flange 11 both sides of its opening, is used for overlap joint and is fixed on dead bolt protecting piece 4 inboards.Inboard, fixed bin 1 bottom surface is fixed with a columniform positioning boss 12, and stage clip 2 is enclosed within outside the positioning boss 12.Anti-plug box 3 also is the cuboid box of an opening, and at a side right angle flange 31 of its opening, a relative side has oblique flange 32.Dead bolt protects piece 4 and protects piece for conventional inward with dead bolt, and the perforate on this part is oblique tongue square hole.

During installation, anti-plug box 3 is contained in the fixed bin 1, anti-plug box 3 angle mounts are gone into dead bolt to be protected in the square hole of piece 4, its right angle flange 31 is overlapped on the inboard that dead bolt protects piece 4, be exposed at dead bolt outside its oblique flange 32 and protect piece 4 outsides, its bottom surface is withstood by stage clip 2 tops in the fixed bin 1, and tiltedly flange 32 exposes to dead bolt and protects the width of the height in piece 4 outsides greater than crack between a door and its frame under the effect of stage clip.

The positioning boss 12 that stage clip 2 is inserted in fixed bin 1 is outer and fixing.The flange 11 of fixed bin 1 both sides is overlapped on dead bolt protects piece 4 inboards, anti-plug box 3 is covered, and it also has a side to push down the right angle flange 31 of anti-plug box 3 and the activity surplus is arranged, it is fixing that fixed bin 1 and dead bolt are protected piece 4, this moment, stage clip 2 contacted with anti-plug box 3 bottom surfaces, and it is withstood.When masterpiece was used for the oblique flange 32 of anti-plug box 3, stage clip 2 promptly was compressed, but anti-plug box 3 part retraction dead bolts protect in the piece 4.Be that anti-plug box 3 can partly stretch out according to the size that acts on the power on the oblique flange 32 or the retraction dead bolt protects in the square hole of piece 4, and the oblique flange 32 of anti-plug box 3 contact with the acting surface of power all the time.

Be illustrated in figure 3 as this structure and be installed in state on the door, door leaf 5, dead bolt 6, doorframe 7 are the conventional components on the door.When door leaf 5 cut out, the side of dead bolt 6 applied the oblique flange 32 of power in anti-plug box 3, stage clip 2 compressions, and the oblique flange 32 of anti-plug box 3 is close to the side of door leaf 5.This moment is if there is thin thing such as card to insert from the slit of door leaf and doorframe, just the chamfered portion that can not act on oblique tongue 6 can effectively prevent from illegally to open door leaf with oblique tongue 6 fan 5 that pulls out that bride visits her parents with her husband for the first time after the wedding, worn vest as giving oblique tongue 6.

Claims

1. theft-proof bolt guard block structure of door lock, its dead bolt with the lockhole outside that is installed on the doorframe protects piece (4); It is characterized in that described structure also includes fixed bin (1), stage clip (2) and anti-plug box (3);

Described fixed bin (1) has an opening at least, flange (11) is arranged in the both sides of described opening, described flange (11) protects the medial surface overlap joint of piece (4) with dead bolt and fixes, and the inboard is provided with a location boss (12) at the bottom of the box of fixed bin (1), and described stage clip (2) is enclosed within outside the positioning boss (12);

Described anti-plug box (3) has an opening at least, and one side has right angle flange (31) in the both sides of described opening, and a side has oblique flange (32);

Described anti-plug box (3) is contained in the fixed bin (1), and angle mount is gone into dead bolt and is protected in the square hole of piece (4), its right angle flange (31) is overlapped on the medial surface that dead bolt protects piece (4), the activity surplus is pushed down and left to the side of box (1) of being fixed, the outer dead bolt that is exposed at of its oblique flange (32) protects piece (4) outside, and its bottom surface is withstood by stage clip (2) top in the fixed bin (1); Described oblique flange (32) exposes to dead bolt and protects the width of the height in piece (4) outside greater than crack between a door and its frame under the effect of stage clip.

2. theft-proof bolt guard block structure of door lock according to claim 1 is characterized in that: described fixed bin (1) and anti-plug box (3) are the rectangle box body structure of an opening.