CN2047288U - Theft protection door latch-lock - Google Patents

Abstract

The utility model relates to a theft protection door latch-lock used in doors, comprising a lock tongue with an anti-inserting reinforcement plate and a lock body. The utility model is simple and practical and has the advantages of anti-inserting, anti-kicking and convenient use. Indoor crimes by criminals can be effectively prevented. The utility model is the anti-theft and protection lock.

Description

Theft protection door latch-lock

The utility model relates to door and goes up a kind of " the anti-theft billiards door lock " that uses.

Usually, pin tumbler lock all is equipped with in room, gate or office that people live, and in order to anti-stealing safety, but stolen phenomenon is still had no lack of precedents.According to the analysis of public security department to the burglary case: most of larceny case is because the criminal utilizes various materials to be inserted on the dead bolt inclined-plane through crack between a door and its frame, makes the dead bolt retraction and inserts and open the pin tumbler lock crime of entering the room; The criminal who also has utilizes the fixed head of common pin tumbler lock tongue shell narrow, only is fixed on the door frame limit, and the power of exerting violence slightly, the timber on the door frame limit promptly splits, and dead bolt shell this weakness that then thereupon comes off is kicked open enter the room crime of pin tumbler lock with violence.Load onto the dual fail-safe pin tumbler lock, no doubt can take precautions against the bad person utilizes various materials to insert through crack between a door and its frame to open the pin tumbler lock crime of entering the room, but still not anti-playing, in use there are many shortcomings still more, show: 1. close and to use key turns " insurance " more behind the door, otherwise just do not play " insurance " effect, still easily inserted and open by various materials.2. close and to use key turns " insurance " more behind the door, certainly will increase loaded down with trivial details in the formality.3. close and use key turns " insurance " behind the door again, once forming the habit, the normal pass that occurs is not intended to rotate " insurance " behind the door, causes an interior relatives to go out.

The purpose of this utility model, exactly in order to overcome above-mentioned drawback, for people provide a kind of simple and practical, can anti-plug, can resist again and play, and easy to use, can play " the anti-theft billiards door lock " of effective preventive effect to bad person's crime of entering the room.

The utility model is to be formed by the dead bolt shell of general pin tumbler lock transforms.Promptly cast out the fixed head on the general pin tumbler lock tongue shell, replace " the anti-plug gusset plate " of elbow bend, the combination of improved dead bolt shell and general pin tumbler lock body assembly promptly constitutes the utility model.

Below in conjunction with accompanying drawing the utility model is specified: (figure one) is dead bolt shell front view, and (figure two) are dead bolt shell vertical view, and (figure three) are that the utility model assembles the use schematic diagram on door.Among the figure:

1---dead bolt shell 2---dead bolt hole

3---anti-plug gusset plates 4---, 3 one fixing holes

5---door frame 6---doorframe

7---the lock body assembly

Now be described with reference to the accompanying drawings structure of the present utility model and action principle.The utility model is made up by dead bolt shell 1 that anti-plug gusset plate 3 is arranged and lock body assembly 7 and constitutes.Except that the dead bolt shell 1 and the shape of general pin tumbler lock tongue shell were different, structure of the present utility model was all identical with general pin tumbler lock.The core of the invention, not the same in this point just, also be the place of technical characterictic.It is characterized in that: on the anti-plug gusset plate 3 on the dead bolt shell 1 elbow bend is arranged, fixing hole 4 is arranged, have the plane of fixing hole 4 wealthyer than the fixed head plane on the general pin tumbler lock tongue shell.Anti-plug gusset plate 3 is the parts in dead bolt shell 1 integral body.Its effect is: owing on the anti-plug gusset plate 3 elbow bend is arranged, it matches with the lock body head, when assembling is used on door, has two elbow bends at least, dead bolt is bounced back and the plug in lock that opens the door so can prevent that various materials are inserted into through crack between a door and its frame.Owing on the anti-plug gusset plate 3 fixing hole 4 is arranged, there is the plane of fixing hole 4 wealthyer again, mixes fixedly dead bolt shell 1 of gong silk, strengthened to resist and played ability, played the effect that uprising power is kicked open door lock with it than the fixed head plane on the common pin tumbler lock tongue shell.The lock because the utility model is shut the door after you promptly, i.e. anti-plug uses than " dual fail-safe pin tumbler lock " and will make things convenient for manyly.

Obviously: the utility model is simple and practical, can anti-plug, and can resist again and play, and easy to use, can play effective preventive effect to bad person's crime of entering the room, a kind of really anti-stealing safety usefulness with social benefit and economic benefit is locked.

Claims (2)

1, a kind of " anti-theft billiards door lock ", it is to be made of dead bolt shell 1 that anti-plug gusset plate 3 is arranged and lock body assembly 7.It is characterized in that: on the anti-plug gusset plate 3 on the dead bolt shell 1 elbow bend is arranged.

2, " anti-theft billiards door lock " according to claim 1 is characterized in that: fixing hole 4 is arranged on the anti-plug gusset plate 3.

Images