CN203821992U

CN203821992U - Anti-theft lock body

Info

Publication number: CN203821992U
Application number: CN201420068376.1U
Authority: CN
Inventors: 高旭斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-02-18
Filing date: 2014-02-18
Publication date: 2014-09-10
Anticipated expiration: 2024-02-18

Abstract

The utility model discloses an anti-theft lock body, which comprises a lock housing, a lock cylinder and a lock body arranged in the lock housing, wherein the lock body comprises a bolt plate which is pulled by the lock cylinder to move, and a bolt fixedly connected with the bolt plate, and the two sides of the bolt are provided with accommodating cavities; a bolt hook is arranged in each accommodating cavity, and a torsion spring is arranged on each bolt hook; a rotating shaft penetrates through a central hole of each torsion spring and a rotating shaft hole in the corresponding bolt hook so that the bolt hooks are rotatably connected into the accommodating cavities at the two sides of the bolt, one end of the bolt is provided with a hook body, and the other end of the bolt is provided with a guide slope. When the lock cylinder is rotated by a key, the bolt plate is pulled by the lock cylinder to drive the bolt to return to the lock housing, the bolt hook bodies rotate around the rotating shafts and retract to the accommodating cavities under the action of the bolt guide slopes; when the bolt plate moves forwards, the bolt extends out, and the bolt hook bodies rotate around the rotating shafts under the action of the torsion springs and extend out of the accommodating cavities to clamp a door frame; accordingly, a door lock is locked, and the bolt hook as an anti-theft body is added to enhance the anti-theft performance.

Description

A kind of antitheft lock

Technical field

The utility model relates to a kind of lock, especially a kind of antitheft lock.

Background technology

In daily life, common lock generally includes lock housing, is arranged at lock body and lock core three parts in lock housing, and when key inserts lock core, lock core can be stirred lock body and move, and when lock body departs from doorframe, door is opened, and when lock body snaps in doorframe, door is locking.People to be opened in the situation by key and to have designed various theft-prevention structures in order to prevent from being locked in not, but theft-prevention structure of the prior art often designs complexity, causes the cost of production of lock to rise.

Summary of the invention

The problem existing in order to solve prior art, the utility model provides a kind of simple in structure, convenient and practical antitheft lock.

The utility model solves the technical scheme that its technical problem adopts: a kind of antitheft lock, comprise lock housing, lock core and be arranged at the lock body in lock housing, described lock body is included in lock core and stirs lower removable bolt plate and the dead bolt being fixedly connected with bolt plate, described dead bolt both sides are provided with accommodating cavity, in described accommodating cavity, be provided with tongue hook, on described tongue hook, torsion spring is housed, the centre bore and the shaft hole on tongue hook that have rotating shaft to pass described torsion spring are rotationally connected with described tongue hook in the accommodating cavity of described dead bolt both sides, one end of described tongue hook is provided with coupler body, the other end is provided with guiding surface.

The beneficial effects of the utility model are: when key rotation lock core, lock core is stirred bolt plate of the present utility model, bolt plate drives dead bolt to return in lock housing, under the effect of tongue hook guiding surface, tongue hook coupler body rotates around the shaft and is retracted in accommodating cavity, and when bolt plate moves forward, dead bolt stretches out, accommodating cavity is stretched out in the rotation around the shaft under torsion spring effect of tongue hook coupler body, block doorframe, now not only door lock is lockable and has simultaneously also increased this antitheft body of tongue hook coupler body, makes door lock safer, is difficult for being pried open.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the fractionation schematic diagram of Fig. 1;

Fig. 3 is the schematic diagram that the utility model tongue hook cuts out with dead bolt motion.

The specific embodiment

With reference to 1, Fig. 2, a kind of antitheft lock, comprise lock housing, lock core and be arranged at the lock body in lock housing, described lock body is included in lock core and stirs lower removable bolt plate 1 and the dead bolt 2 being fixedly connected with bolt plate 1, described dead bolt 2 both sides are provided with accommodating cavity 21, in described accommodating cavity 21, be provided with tongue hook 3, on described tongue hook 3, torsion spring 4 is housed, there is rotating shaft 5 described tongue hook 3 to be rotationally connected with in the accommodating cavity 21 of described dead bolt 2 both sides through centre bore 41 and the shaft hole 31 on tongue hook 3 of described torsion spring 4, one end of described tongue hook 3 is provided with coupler body 32, the other end is provided with guiding surface 33.

When key rotation lock core, lock core is stirred bolt plate 1 of the present utility model, and bolt plate 1 drives dead bolt 2 to return in lock housing, and under the effect of tongue hook guiding surface 33, tongue hook coupler body 32 5 rotates and is retracted in dead bolt accommodating cavity 21, as shown in Figure 3 around the shaft; And when bolt plate 1 moves forward, dead bolt 2 stretches out, accommodating cavity 21 is stretched out in 5 rotations around the shaft under torsion spring 4 effects of tongue hook coupler body 32, blocks doorframe, as shown in Figure 1; Now not only door lock is lockable and has simultaneously also increased tongue hook 3 these antitheft bodies, makes door lock safer, is difficult for being pried open.

Claims

1. an antitheft lock, comprise lock housing, lock core and be arranged at the lock body in lock housing, it is characterized in that: described lock body is included in lock core and stirs lower removable bolt plate (1) and the dead bolt (2) being fixedly connected with bolt plate (1), described dead bolt (2) both sides are provided with accommodating cavity (21), in described accommodating cavity (21), be provided with tongue hook (3), torsion spring (4) is housed on described tongue hook (3), there is rotating shaft (5) described tongue hook (3) to be rotationally connected with in the accommodating cavity (21) of described dead bolt (2) both sides through centre bore (41) and the shaft hole (31) on tongue hook (3) of described torsion spring (4), one end of described tongue hook (3) is provided with coupler body (32), the other end is provided with guiding surface (33).