CN2326689Y - Anti-theft lock - Google Patents

Abstract

The utility model relates to an anti-theft lock which comprises a lock body, a lock bridge, a lock pin and a key. The lock pin, lock body and the key are made into clintheriform; a spring is arranged between the lock body and lock pin; counter bores are random-arranged in the lock pin; the position in the lock body which is corresponding to the counter bores is provided with a through hole; both the counter bores and the through hole are provided with marble devices, and the dimple corresponding to the through hole is disposed on the key. The utility model transforms the traditional line contact of the key bit and the marble into the current surface contact so that the anti-theft lock has more arrangement and combination modes. As a consequence, this device has the advantages of low coincidence rate, perfect insurance performance and good anti-theft function. Therefore, the anti-theft lock is suitable to be the locks of door, car, bicycle and so on.

Description

A kind of theftproof lock

The utility model relates to a kind of theftproof lock.

Our usual employed lock, mostly be that key is inserted in the lockhole, utilize the pellet shot from a slingshot top of key bit in will locking flat, at this moment lock just can be opened, owing to the pellet shot from a slingshot of this lock point-blank, and limited amount, the tooth of key also has only 5-6, thereby the height fit rate of key bit and pellet shot from a slingshot is low, and the coupling chance is many, lock is easily opened by the lawless person, causes the loss of property for country and individual.

The purpose of this utility model is to overcome the shortcoming of prior art, and a kind of novel anti-burglar lock is provided.

The purpose of this utility model is achieved in that theftproof lock is made up of lock body, lock bridge, lock core, key, between lock body and lock core, be provided with the lock core spring, lock core, lock body and key are tabular, irregular alignment has counterbore on lock core, having through hole on the lock body with on the corresponding position of counterbore, pellet shot from a slingshot spring, flat pellet shot from a slingshot, sharp pellet shot from a slingshot are being housed in counterbore and through hole; Be provided with above the tabular key and the corresponding dimple of through hole.

The utility model contacts traditional key bit and becomes face contact with the line of pellet shot from a slingshot, thereby the coupling rate is extremely low, thus it have safety performance good, be difficult for by pirate of the open and handling ease, low cost and other advantages.

Fig. 1: theftproof lock schematic diagram; Fig. 2: structural representation when theftproof lock is opened;

Among the figure: 1-lock bridge, 2-lock body opening, 3-lock core, 4-lock body, 5-dimple,

6-key, 7-point pellet shot from a slingshot, the flat pellet shot from a slingshot of 8-, 9-lock core spring,

10-pellet shot from a slingshot spring, 11-counterbore;

Below in conjunction with accompanying drawing the utility model is further described:

Theftproof lock is made up of lock body 4, lock bridge 1, lock core 3, key 6, as shown in Figure 1 and Figure 2, lock core 3 is tabular, on it, have the counterbore 11 of irregular alignment, on lock body 4 and 11 corresponding positions, hole, have through hole 2, pellet shot from a slingshot spring 10, flat pellet shot from a slingshot 8, sharp pellet shot from a slingshot 7 are housed in hole 11 and hole 2, between lock core 3 one ends and lock body 4, be provided with lock core spring 9, lock core 3 other ends have a projection, the mutual interlock of recess on it and the lock bridge 1 is provided with above the tabular key 6 and hole 11 corresponding dimples 5.

During use, key 6 is inserted in the lock body 4, dimple 5 is corresponding with lock body opening 2 on the key 6, at this moment sharp pellet shot from a slingshot 7 enters under the effect of pellet shot from a slingshot spring 10 in the different dimple of the depth 5, make flat pellet shot from a slingshot 8 and lock core 3 become same plane, at this moment, the insertion of lock bridge 1 or extract all unrestricted, lock core 3 can shrink arbitrarily, shows as Fig. 2.During locking, insert lock bridge 1, this moment, the lock core spring 9 of lock core 3 back matched the bossing of lock core 3 and the recess of lock bridge 1, simultaneously, lock core hole 11 coincide with lock body opening 2, extract key 6, the position of flat pellet shot from a slingshot 8 and sharp pellet shot from a slingshot 7 is unrestricted, pops up, flat pellet shot from a slingshot 8 enters in the lock body opening 2, at this moment, lock core 3 can't side-to-side movement under the restriction of flat pellet shot from a slingshot 8, thereby finishes the locking task.

When machining hole 11 and hole 2, the diameter in hole can be not of uniform size, so just can select different pellets shot from a slingshot, dimple 5 on the key 6 is also changeable, because sharp pellet shot from a slingshot 7 is different in size, the depth of dimple 5 is also just different, so this lock can reach the hundreds of thousands kind with just cooperating of key, has improved security performance greatly.The utility model can be made into various locksets such as door lock, padlock, bicycle lock, bag lock, drawer-lock.

Claims (1)

1, a kind of theftproof lock, it is made up of lock body (4), lock bridge (1), lock core (3), key (6), between lock body (1) and lock core (3), be provided with lock core spring (9), it is characterized in that: lock core (3), lock body (4) and key (6) are for tabular, irregular alignment has counterbore (11) on lock core (3), upward and on the corresponding position, hole (11) have through hole (2) at lock body (4), pellet shot from a slingshot spring (10), flat pellet shot from a slingshot (8), sharp pellet shot from a slingshot (7) are housed in counterbore (11) and through hole (2); Be provided with above the tabular key (6) and the corresponding dimple of through hole (2) (5).

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