CN2366496Y

CN2366496Y - Anti-prizing type lock

Info

Publication number: CN2366496Y
Application number: CN 99208918
Authority: CN
Inventors: 杜洪德
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-29
Filing date: 1999-04-29
Publication date: 2000-03-01
Anticipated expiration: 2009-04-29

Abstract

The utility model relates to an anti-prizing type lock, which comprises a lock bolt and a draw rod, wherein, the lock bolt along the direction of the width is hinged with a pair of lock hooks which are similar to a C shape; the middle part of each lock is provided with a hinged hole, the head part is extended toward an outer side with a hook head, and the tail part is extended toward the outer side with a flange. When the head parts of the lock hooks are rotated inward to a targeting condition, the head parts can not excess the outer side of the lock bolt. When the lock bolt enters a lock hole of a door frame, the flanges at the tail parts of two lock hooks are blocked by the side walls of the lock hole of a door leave and rotate inward so that the hook heads at the head parts of two lock hooks are rotated outward around each hinged shaft to hook the door frame. The utility model has the advantages of good anti-prizing and anti-theft effects.

Description

Anti-prizing type lock

The utility model relates to a kind of tapered end of lock, especially anti-prizing type lock.

The tapered end of lock is made up of dead bolt and pull bar.Dead bolt roughly is divided into two kinds of plagiohedral and straight rod types, and its cross section is circle or rectangle.Such dead bolt can not be fixed into one with door leaf and doorframe after inserting the lockhole of doorframe, only plays the effect of bolt.The robber often starts with from crack between a door and its frame earlier, is pried open to a certain degree (surpassing the length that dead bolt stretches out) when crack between a door and its frame, and door lock loses protective action at once.

In view of above-mentioned, the purpose of this utility model provides a kind of door leaf and doorframe tightly can being fixed as one, thereby reaches the tapered end of pick-proof effect.

For achieving the above object, the utility model by the following technical solutions:

A kind of anti-prizing type lock, comprise dead bolt and pull bar, the hinged a pair of latch hook of dead bolt broad ways, latch hook is approximate C shape, hinge hole is established at its middle part, and head extends gib head laterally, and afterbody extends flange laterally, head at latch hook inwardly turns under the situation of putting in place, and its head does not exceed the outside of dead bolt.

Described dead bolt broad ways is offered groove, and described latch hook is included in this groove hinged with dead bolt.

When dead bolt enters the doorframe lockhole, the flange of two latch hook afterbodys will be subjected to stopping of door leaf lockhole sidewall and inwardly rotate, and make the gib head of two latch hook heads hook doorframe around the outside rotation of jointed shaft separately.After this seam of forcing open the door come what may, gib head all will firmly hook doorframe, thereby good pick-proof and anti-theft effect is arranged.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1,2 is respectively structure chart of the present utility model and locking state schematic diagram.

See also Fig. 1.Anti-prizing type lock comprises the pull bar 10 of dead bolt 7 and push-and-pull dead bolt 7, and the cross section of dead bolt 7 is rectangle, and its rear end is fixed together with rivet 6 and fixed head 8, and fixed head 8 and pull bar 10 usefulness bearing pins 9 are hinged.Broad ways is offered groove on the dead bolt 7, includes a pair of latch hook 4 in the groove in.Latch hook 4 is approximate C shape, and its head extends gib head laterally, and afterbody extends flange laterally, and hinge hole is established at the middle part, and it is hinged with dead bolt 7 to wear bearing pin 5 in this hinge hole.Head at latch hook 4 inwardly turns under the situation of putting in place, and its head does not exceed the outside of dead bolt 7.Among the figure, the 1st, door body, the 2nd, door leaf body, the 3rd, rivet.

Promote in the process of lockhole of dead bolts 7 access door frameworks 1 at pull bar 10, the flange of two latch hooks, 4 afterbodys rotates because of being subjected to inwardly stopping of door leaf body 2 lockhole sidewalls, the gib head that makes two latch hooks, 4 heads outwards rotates and hooks doorframe around separately jointed shaft, thereby door leaf and doorframe firmly are fixed into one (as shown in Figure 2).

Can not slot on the dead bolt 7, but directly that two latch hooks 4 are hinged with a side of dead bolt yet, can strengthen the intensity of dead bolt 7 like this, but its outward appearance and stressing conditions are not as the former.

Claims

1. anti-prizing type lock, the pull bar that comprises dead bolt and push-and-pull dead bolt, it is characterized in that: the hinged a pair of latch hook of described dead bolt broad ways, latch hook is approximate C shape, hinge hole is established at its middle part, and head extends gib head laterally, and afterbody extends flange laterally, head at latch hook inwardly turns under the situation of putting in place, and its head does not exceed the outside of dead bolt.

2. anti-prizing type lock according to claim 1 is characterized in that: described dead bolt broad ways is offered groove, and described latch hook is included in this groove hinged with dead bolt.