CN2653057Y

CN2653057Y - Lock hole shielder

Info

Publication number: CN2653057Y
Application number: CN 03207427
Authority: CN
Inventors: 郑连进
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-18
Filing date: 2003-08-18
Publication date: 2004-11-03
Anticipated expiration: 2013-08-18

Abstract

The utility model relates to a safety lock head device, specifically to a theft-proof blade lock or a spring lock hole protection device used for a strong box, which comprises a lock head, a lock hole and a key. A round groove is arranged around the lock hole center at an outer end of the lock head; a long groove is arranged again around the lock hole center on the bottom of the groove; two square protecting boards are arranged in the long groove. At the corresponding position of the two sides of the long groove and the lock hole center, protruding blocks are respectively arranged. The two square protecting boards are moved in the long groove within boundaries of the protruding blocks. Each end of the long groove provides respectively a spring which the other end of the spring contacts the protecting board. A cover board is arranged in the round groove. The utility model has advantages of convenient usage and simple structure.

Description

The lockhole screening arrangement

Technical field

The utility model relates to a kind of safety lock head unit, is antitheft blade lock or cylinder lock lockhole protective device that a kind of strongbox is used specifically.

Background technology

If 9232518.8 described a kind of lockhole cover sheets, constitute by lid, lock shaft, lock collar and key, grab blocks lock collar under the cover closing state, lid is installed in the lockhole place of door by hinge, lock shaft is installed by the door upper cover, position and grab matching relationship, and this fault of construction is lockset unlatching inconvenience, need to install separately, and structure is insecure; As 99223646.0 described a kind of push-plate type cipher lock hole protectors, this protector structure complexity is equivalent to establish in addition a lockset, though solved the problem that the lockhole of built-in lock destroys easily, has improved the lockset cost widely.

Summary of the invention

The purpose of this utility model is at present blade lock or the existing the problems referred to above of cylinder lock lockhole protective device, designs a kind of lockhole screening arrangement easy to use, simple in structure.

For achieving the above object, the utility model has adopted following technical proposal: the lockhole screening arrangement, comprise tapered end, be positioned at the lockhole and the key at tapered end center, described tapered end outer end is that a circular groove is established at the center with the lockhole, at this bottom portion of groove is that an elongate recesses is established at the center again with the lockhole, two square backplates are arranged in the elongate recesses, these groove both sides and lockhole center respectively are provided with a projection on the corresponding position, two backplates are the boundary with the projection, in elongate slots, move, respectively there is a spring at the elongate slots both ends, the other end of spring contacts with backplate, and two backplates are under the effect of spring force, and are simultaneously close to projection, one cover plate is arranged in the circular groove, whole device is enclosed in the tapered end.

The utlity model has following advantage: utilize spring to make two backplates shielding lockhole, when key inserts lockhole, need not to open other mechanisms, key backs down backplate and enters lockhole and open lockset and get final product, operation is very easy, screening arrangement and lockset are integrated, and need not protection device for installing separately, install also very convenient; Only set up two backplates and two springs on the structure, can prevent that promptly foreign matter from entering lockhole, and all be arranged in the tapered end that structure is very simple.

Description of drawings

Fig. 1 is the front view of the utility model embodiment

Fig. 2 is the vertical view of the utility model embodiment removal cover plate

Among the figure, 1, lockhole; 2, cover plate 3, backplate 4, tapered end 5, projection 6, spring; 7, key.

The specific embodiment

As shown in Figure 1, 2, the tapered end 4 of present embodiment is the cylindrical shape in center with lockhole 1, and the end face that its key 7 inserts an end cuts out a circular groove, and cover plate 2 cooperates with this circular groove, and places this groove, and also there is a lockhole 1 at cover plate 2 centers.

In the bottom of this circular groove, be the depths of middle mind-set tapered end 4 with lockhole 1, cut out an elongate recesses again, elongate recesses is the center with lockhole 1 still; The mid point on two limits of elongate recesses respectively is provided with a projection 5, and projection 5 has limited the moving range of elongate recesses inner casing 3, and each backplate 3 moves between the end of projection 5 and elongate recesses; Be provided with spring 6 behind the backplate 3, under the spring force effect, backplate 3 covers lockhole 1; Projection 5 is triangular in shape, and backplate 3 belongs to the inclined-plane with the contact surface of projection 5, one side this inclined-plane and 5 leg-of-mutton cooperations of projection, when making 3 splicings of two backplates, middle no crack.

When key 7 is inserted to lockhole 1, there is backplate 3 to block, therefore, will makes an inclined-plane near backplate 3 one ends of projection 5, when two backplates 3 closely contact, constitute a V-shaped groove, the general pointed or spherical shape of key 7 heads, enter V-shaped groove after, can overcome the effect of spring 6, back down backplate 3 smoothly, insert lockhole 1, open lockset; After key 7 was extracted, under the effect of spring 6, two backplates 3 were close from the center of trend lockhole 1, and are stitched together.

Claims

1, lockhole screening arrangement, comprise tapered end, lockhole and key, it is characterized in that described tapered end outer end is that a circular groove is established at the center with the lockhole, is that an elongate recesses is established at the center again with the lockhole at this bottom portion of groove, and two square backplates are arranged in the elongate recesses, groove both sides and lockhole center respectively are provided with a projection on the corresponding position, two backplates are the boundary with the projection, move in elongate slots, and respectively there is a spring at the elongate slots two ends, the other end of spring contacts with backplate, and a cover plate is arranged in the circular groove.

2, lockhole screening arrangement according to claim 1 is characterized in that projection is triangular in shape, and each backplate and projection contact surface are the inclined-plane, and this inclined-plane cooperates with projection triangle both sides, and when the lockhole screening arrangement cut out, two backplate end faces closely contacted.

3, lockhole screening arrangement according to claim 1 and 2 is characterized in that being the inclined-plane near backplate one end of projection, when two backplates closely contact, constitutes a V-shaped groove.