CN2130875Y - Cylinder lock - Google Patents

Abstract

The utility model provides a cylinder lock. A key slot and a lower cylinder are on a lock body, and a cylinder spring and an upper cylinder are in a lock core. When a lock is unlocked, a key just plays the function of checking a number, and bears no rotary force for unlocking. A hole of a spring reed and cylinder holes of the lock core form a stepped hole; the upper part of the stepped hole is the cylinder holes of the lock core of which the length is smaller than the sum of that of the upper and the lower cylinders. Accordingly, the upper and the lower cylinders can not be totally pushed into the lock core by a special tool to make the lock unlock.

Description

Cylinder lock

The utility model relates to a kind of improvement of cylinder lock, is applicable to various cylinder locks.

Existing cylinder lock generally is that key inserts lock core, and following pellet shot from a slingshot and key are checked the number, and will go up pellet shot from a slingshot and just push lock body, and key drives lock core, opens lock.This being locked in the opening process, key will bear the used revolving force of unblanking.After can upper and lower pellet shot from a slingshot all being pushed lock body with special tool(s), will lock unlatching.Poor stability.

The purpose of this utility model provides a kind of cylinder lock.When unblanking, key only plays the check mark effect, does not bear the used revolving force of unblanking.Not using special tool(s) all pushes lock core with upper and lower pellet shot from a slingshot and will lock unlatching.

The utility model is achieved in that a lock cylinder hole on lock body, the dress lock cylinder.Key with lock core shaft's line parallel is arranged on lock body, and key inserts in this key.The lock cylinder pellet shot from a slingshot hole that one row's axis and lock core intersect vertical axis are arranged on the lock body between key and the lock core holds pellet shot from a slingshot down.The cylindrical shoulder hole that one row's axis and lock core intersect vertical axis are arranged on the lock core of lock marble hole correspondence.The top of shoulder hole be length less than upper and lower pellet shot from a slingshot length and lock core marble hole, load onto pellet shot from a slingshot.The bottom of shoulder hole is the pellet shot from a slingshot spring hole of diameter less than billiards diameter, holds the pellet shot from a slingshot spring.Structure is not just used special tool(s) upper and lower pellet shot from a slingshot is all pushed lock core marble hole unlatching lock thus.Be provided with the handle of the usefulness of unblanking in the positive central authorities of lock core.When key inserted in the key, following pellet shot from a slingshot and key were checked the number, and last pellet shot from a slingshot just is pushed in the lock core marble hole, and upper and lower pellet shot from a slingshot bonding surface overlaps with lock core, lock body bonding surface.Drive subsidiary body by the handle rotational lock core and open lock, key does not bear the used revolving force of unblanking.

Below in conjunction with embodiment and accompanying drawing thereof the utility model is described in further detail.

Fig. 1 is the front view along the lock core axis direction (front view) of a key operated lock.

Fig. 2 is the A-A face cross section view along the lock core axis direction of cylinder lock shown in Figure 1.

Fig. 3 is the cross section view perpendicular to the lock core axis direction of a key operated lock.

Fig. 4 is the cross section view perpendicular to the lock core axis direction of two key operated locks.

Fig. 5 is the cross section view perpendicular to the lock core axis direction of three key operated locks.

As Fig. 1, Fig. 2, shown in Figure 3, this lock is made up of lock body 1, lock core 2, pellet shot from a slingshot spring 3, last pellet shot from a slingshot 4, following pellet shot from a slingshot 5, key 6 and shell 7 etc.Wherein going up pellet shot from a slingshot 4 is the identical cylinders of diameter with following pellet shot from a slingshot 5, and following pellet shot from a slingshot 5 is circle heap shape structure with key 6 contacted ends.Lock body 1 is made for metal material, can make different profiles as required.One lock cylinder hole is arranged, interior dress lock cylinder 2 on lock body 1.Be matched in clearance between lock core hole and the lock core 2.Key 8 with lock core shaft's line parallel is arranged on lock body 1, and key 6 inserts in the key 8.Key convex edge 15 with lock core shaft's line parallel is arranged on the side of key 8.The lock cylinder pellet shot from a slingshot hole 9 that one row's axis and lock core intersect vertical axis are arranged on the lock body 1 between key 8 and the lock core 2 holds pellet shot from a slingshot 5 down.The diameter of lock marble hole 9 matches with billiards diameter.On the lock core 2 of lock spring 9 correspondences, the shoulder hole of row's axis and lock core intersect vertical axis is arranged.The top of shoulder hole is the diameter lock core marble hole 10 identical with lock marble hole 9 diameters, loads onto pellet shot from a slingshot 4.The length of lock core marble hole 10 less than the length of last pellet shot from a slingshot 4 and following pellet shot from a slingshot 5 and, the length that adds time pellet shot from a slingshot 5 greater than the length of last pellet shot from a slingshot 4 subtracts the length of lock marble hole 9 again.The bottom of shoulder hole is the pellet shot from a slingshot spring hole 11 that diameter is slightly less than billiards diameter, holds pellet shot from a slingshot spring 3.Therefore, last pellet shot from a slingshot 4 and following pellet shot from a slingshot 5 can not all enter in the lock core marble hole 10.Lock core marble hole 10 adopts 30 degree chamferings with 11 handing-over positions, pellet shot from a slingshot spring hole, prevents to damage pellet shot from a slingshot spring 3.2 positive central authorities set handle 12 at lock core, drive subsidiary body by handle 12 rotational lock cores 2 when unblanking and open lock.For safety with attractive in appearancely add a shell 7, reserve handle hole 13 and key hole 14 in shell 7 fronts, just sub-exposed handle 12 and key 6 inserted in the key 8 in lock body 1 outside.

In the time of in key 6 does not insert key 8, because of the promotion of pellet shot from a slingshot spring 3, following pellet shot from a slingshot 5 arrives at the convex edge 15 of key 8, and last pellet shot from a slingshot 4 parts enter in the lock marble hole 9, and at this moment lock core 2 can't rotate, and lock can not be opened.When key 6 inserts in the key 8, following pellet shot from a slingshot 5 is checked the number with key 6, last pellet shot from a slingshot 4 just is pushed in the lock core marble hole 10, and the bonding surface of last pellet shot from a slingshot 4, following pellet shot from a slingshot 5 overlaps with the bonding surface of lock core 2, lock body 1, drives subsidiary bodies by handle 12 rotational lock cores 2 and will lock unlatching.In the process of unblanking, 6 of keys play the check mark effect, do not bear the used revolving force of unblanking.Therefore, it is very thin very little that key 6 can be done, and what key 8 also can be done is very narrow very little, avoids some special unlocking tools to insert in the key 8, will lock unlatching.Because, the length of lock core marble hole 10 less than the length of last pellet shot from a slingshot 4 and following pellet shot from a slingshot 5 with.And the diameter in pellet shot from a slingshot spring hole 11 is less than the diameter of pellet shot from a slingshot.So last pellet shot from a slingshot 4 and following pellet shot from a slingshot 5 can all not enter in the lock core marble hole 10, also avoided will going up pellet shot from a slingshot 4 and all pushed the possibility of opening lock in the lock core marble hole 10 with following pellet shot from a slingshot 5 with special tool(s), make lock safe and reliable.When needing many keys to drive a lock, on same lock body, lock core, offer many cover one member of key operated cylinder lock is got final product by same principle.Do not need to increase lock body, lock core number, as Fig. 4, shown in Figure 5.When unblanking, must be in the whole key of inserting separately of all keys, lock could be opened.

The utility model is because in the process of unblanking, key only plays the check mark effect, does not bear the used revolving force of unblanking, key can not fractureed, it is very thin very little that key can be done, and what key also can be done is very narrow very little, some tools used in crime can not be inserted in the key will lock unlatching.Since the length of lock core marble hole less than the length of upper and lower pellet shot from a slingshot and, also avoided upper and lower pellet shot from a slingshot all being pushed lock core marble hole and will lock unlatching with special tool(s).And, do not need to increase lock body, the lock core number can be made many key operated lock.

Claims (2)

1, a kind of cylinder lock is by lock body 1, lock core 2, pellet shot from a slingshot spring 3, last pellet shot from a slingshot 4, following pellet shot from a slingshot 5, key 6 and shell 7 are formed, it is characterized in that: the key 8 with lock core shaft's line parallel is arranged on lock body 1, on the lock body 1 between key 8 and the lock core 2, the lock cylinder pellet shot from a slingshot hole 9 that one row's axis and lock core intersect vertical axis are arranged, on the lock core 2 of lock marble hole 9 correspondences, the cylindrical shoulder hole that one row's axis and lock core intersect vertical axis are arranged, the top of shoulder hole be length less than last pellet shot from a slingshot 4 and following pellet shot from a slingshot 5 length and lock core marble hole 10, the bottom of shoulder hole is the pellet shot from a slingshot spring hole 11 of diameter less than billiards diameter.

2, by the described cylinder lock of claim 1, it is characterized in that lock core 2 positive central authorities are provided with handle 12.

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