CN2134455Y

CN2134455Y - Anti-theft and anti-drill lock

Info

Publication number: CN2134455Y
Application number: CN 92216309
Authority: CN
Inventors: 张久财
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-06-24
Filing date: 1992-06-24
Publication date: 1993-05-26
Anticipated expiration: 2002-06-24

Abstract

The utility model relates to an anti-theft and anti-drill lock which solves the existing problems that a door lock and a lock core are destroyed easily. The utility model is characterized in that a protective shell whose edge is machined with a tooth is arranged on the end of the lock body and fixed on the end of a lock body through the tooth of the edge on the basis of the door lock composed of the lock core, a clamp spring, a screw, and the lock body. Between the lock body and the protective shell, the middle hole of the protective shell is provided with an anti-drill collar with a hole used for inserting into a key. The inner surface of the anti-drill collar forms a concave shape; the inside end of the anti-drill collar is contacted with the lock body only and not contacted with the lock core; the convex outside surface of the outer end of the anti-drill collar forms a conical surface or a spherical shape surface. The utility model has the characteristic of anti-drilling.

Description

Anti-theft and anti-drill lock

The utility model belongs to a kind of door lock, particularly a kind of antitheft anti-drill lock.

In family and enterprises and institutions, stolen in order to prevent inside plant, security door is installed, and the door lock that existing door is installed destroys core in order to prevent the robber with boring, and increases anti-drilling function, protecting crust is installed in the outside at lock body, be equipped with movable anti-drilling sheet between protecting crust and lock body in the mesopore of protecting crust, when using bit drills, movable anti-drilling sheet rotates with drill bit; Since anti-drilling sheet be plane and indent in protecting crust, movable anti-drilling sheet is when rotating and the core direct friction, core is fragile, does not have anti-drilling purpose.

The purpose of this utility model is to solve above-mentioned existing problem, provides a kind of protective good, safe and reliable antitheft anti-drill lock.

The utility model is achieved in that on the basis of the door lock of being made up of lock core, jump ring, screw and lock body, in the end of lock body protecting crust is installed, and the edge of its protecting crust is processed with tooth, is fixed on the end of lock body by the tooth at edge.Between lock body and protecting crust, the mesopore place of protecting crust is equipped with anti-jumping through rings, and anti-drilling endless belt is useful on the hole of inserting key, and the inner surface of anti-jumping through rings is a spill, inner end does not only contact with lock body and contacts with core, and the convex outer surfaces of the outer end of anti-jumping through rings is taper surface or spherical.

The utility model has the advantages that: owing to be equipped with anti-jumping through rings between lock body and protecting crust, the convex outer surfaces of anti-jumping through rings is taper surface or spherical, when drill bit touches the surface, not only glides along its surface, and rotates with the rotation of drill bit; In addition, the inner face indent of anti-jumping through rings does not contact with plug face, does not damage lock core, has anti-drilling characteristics.

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

Fig. 2 is the structural representation that has the anti-jumping through rings of taper surface of the present utility model;

Fig. 3 is the left view of Fig. 2;

Fig. 4 is the structural representation that has the anti-jumping through rings of spherical of the present utility model;

Fig. 5 is the left view of Fig. 4;

Fig. 6 is the structural representation of protecting crust of the present utility model;

Fig. 7 is the left view of Fig. 6;

Fig. 8 is that the A of Fig. 6 is to partial view

Describe in detail below in conjunction with accompanying drawing:

As shown in the figure, on the basis of the door lock of being made up of lock core 1, jump ring 2, screw 3 and lock body 4, in the end of lock body 4 protecting crust 5 is installed, the edge of protecting crust 5 is processed with tooth, is fixed on the end of lock body 4 by the edge upper teeth.Between lock body 4 and protecting crust 5, the mesopore place of protecting crust 5 is equipped with anti-jumping through rings 6, and anti-jumping through rings 6 has the hole that is used to insert key 7, and the inner surface C of anti-jumping through rings 6 is a spill, inner end does not only contact with lock body and contacts with core, and the convex outer surfaces of the outer end of anti-jumping through rings is taper surface A or is spherical B.When the saboteur firmly bores with drill bit,, the rat of preventing jumping through rings 6 glides like this owing to making drill bit; And anti-jumping through rings has the free gap between protecting crust and lock body, and anti-jumping through rings can rotate together and can not destroy core with drill bit, plays anti-drilling purpose.

Claims

1, a kind of antitheft anti-drill lock comprises the door lock of being made up of lock core, jump ring, screw and lock body, it is characterized in that in the end of lock body protecting crust being installed, and the edge of its protecting crust is processed with tooth, is fixed on the end of lock body by the tooth at edge; Between lock body and protecting crust, the mesopore place of protecting crust is equipped with anti-jumping through rings, and anti-drilling endless belt is useful on the hole of inserting key, and the inner surface of anti-jumping through rings is a spill, inner end does not only contact with lock body and contacts with core, and the convex outer surfaces of the outer end of anti-jumping through rings is taper surface or spherical.