CN2361764Y - Safety lock - Google Patents

Abstract

The utility model relates to a safety lock. The utility model is characterized in that a through hole at the center of a lock core is divided into two sections, a front section and a rear section; a key slot and each pair of upper and lower cylinders corresponding to the key slot are arranged at the front sections of a lock body and the lock core; the rear section of the center hole of the lock core is orderly provided with a control head, a safety device, a compressed spring and a limited block along an axial direction; the rear sections of the lock body and the lock core are also provided with a pair of axial safety cylinders; the outer side of a key of the safety lock is provided with a radial safety tooth and in addition, the top end of the key is provided with an axial safety tooth. The utility model has the advantages of lock safety assurance through radial and axial directions, high anti-theft safety coefficient and convenient and reliable operation.

Description

Safety lock

The utility model relates to a kind of safety lock.

The common spring lock that generally uses at present generally is made up of lock body, core and key, be equipped with some in lock body and the core to upper and lower pellet shot from a slingshot, the lower end of following pellet shot from a slingshot is stretched in the key that is installed in the lock core center, and the outer radial of key has several and radially insures tooth, and the length of pellet shot from a slingshot is corresponding down in the groove height of radially insuring tooth and the core.This lock cooperates and guarantees safety by the following pellet shot from a slingshot in tooth and the lock core of radially insuring of key, and safety factor is lower, because the face of being slidingly matched of upper and lower pellet shot from a slingshot is the face of cylinder, and fitting face is big, it is dumb to slide, and influences reliability simultaneously.

The purpose of this utility model provides a kind of improved novel safety lock, makes key and core guarantee the safety of locking by radial and axial both direction, and burglary insurance coefficient height is easy to use, reliable.

The technical solution of the utility model is before the through hole with the lock core center is divided into, two sections of backs, key is installed in leading portion, corresponding with it each to last, following pellet shot from a slingshot also is positioned at the leading portion of lock body and lock core, at lock core centre bore back segment, control head is installed vertically successively, protector, stage clip and limited block, described control head front end has a blind hole, its rear end withstands on the protector, the protector stage casing of column has the annular groove of a conical surface, the protector rear end is pressed on the limited block by stage clip, back segment at lock body and lock core, a pair of axial relief pellet shot from a slingshot also is installed, following axial relief pellet shot from a slingshot lower end is stretched in the annular groove of above-mentioned protector, and the key of this safety lock radially insures the tooth except having in the outside, also has an axial relief tooth on its top, and the blind hole depth on its height and the above-mentioned control head and the length of axial relief pellet shot from a slingshot are corresponding.Simultaneously, the cross sectional shape of the above-mentioned upper and lower pellet shot from a slingshot section of being slidingly matched can be the band rounded triangle, and three sections fillets are the face of being slidingly matched.In addition, on above-mentioned protector rear end and limited block, the electric switch contact can also be installed, insert electronic alarm, further improve safety factor by lead.

The utility model has the advantages that, owing in lock core, increased protector, and increasing the axial relief tooth on the key, can guarantee the safety of locking to improve safety factor at both direction axially and radially.Simultaneously the lock core of two-part also can make the corresponding shortening of key, reduces volume and weight, be easy to carry, and that leg-of-mutton upper and lower pellet shot from a slingshot also uses is convenient, reliable.In addition, because the switch contact in the lock core rear end can insert electronic alarm, thereby further improved antitheft burglar insurance money coefficient.

Below in conjunction with accompanying drawing embodiment of the present utility model is described further.

Fig. 1 is the view that the utility model safety lock is not opened;

Fig. 2 is the view that the utility model safety lock inserts key;

Fig. 3 is key and lock core structure decomposing schematic representation;

Fig. 4 is the cross sectional shape schematic diagram of upper and lower pellet shot from a slingshot.

Shown in Fig. 1～3, this safety lock is made up of lock body 1, lock core 2 and key 3, and key 4 and upper and lower pellet shot from a slingshot 5,6 are installed in lock core and lock body leading portion, and control head 7, protector 8, stage clip 9 and limited block 10 are installed in lock core centre bore back segment successively.The key 4 of safety lock radially insures the tooth 11 except having in the outside, also has an axial relief tooth 12 on its top, when key inserts lock core, when the teeth groove that radially insures tooth promotes upper and lower pellet shot from a slingshot, the axial relief tooth also stretches into the blind hole 13 of control head, promote control head and protector, the conical surface of annular groove 14 just promotes axial relief pellet shot from a slingshot 15 and rises to the enable possition on the protector.The switch contact 16 that is installed on protector 8 and the locating piece 9 can insert electronic alarm.The cross sectional shape of the above-mentioned upper and lower pellet shot from a slingshot section of being slidingly matched is a band rounded triangle (as shown in Figure 4), and it is slidingly matched by three sections circular arcs and lock body and lock core.

Claims (3)

1, a kind of safety lock, by lock body (1), lock core (2) and key (3) are formed, it is characterized in that: before the through hole at described lock core (2) center is divided into, two sections of backs, key (4) is installed in leading portion, corresponding with it each to last, following pellet shot from a slingshot (5,6) also be positioned at the leading portion of lock body and lock core, at lock core centre bore back segment, control head (7) is installed vertically successively, protector (8), stage clip (9) and limited block (10), described control head (7) front end has a blind hole (13), its rear end withstands on the protector (8), the protector stage casing of column has the annular groove (14) of a conical surface, the protector rear end is pressed on the limited block by stage clip, back segment at lock body (1) and lock core (2), a pair of axial relief pellet shot from a slingshot (15) also is installed, following axial relief pellet shot from a slingshot (15) lower end is stretched in the annular groove (14) of above-mentioned protector, and the key of this safety lock (3) radially insures the tooth (11) except having in the outside, also have an axial relief tooth (12) on its top, the length of the degree of depth of blind hole (13) and axial relief pellet shot from a slingshot (15) is corresponding on its height and the above-mentioned control head.

2, safety lock according to claim 1 is characterized in that: the cross sectional shape of described upper and lower pellet shot from a slingshot (5, the 6) section of being slidingly matched is the band rounded triangle, and three sections fillets are the face of being slidingly matched.

3, safety lock according to claim 1 and 2 is characterized in that: on protector (8) rear end and limited block (10), electric switch contact (16) is installed also.

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