CN2937374Y

CN2937374Y - Lock core

Info

Publication number: CN2937374Y
Application number: CN 200620131204
Authority: CN
Inventors: 丁国强
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-16
Filing date: 2006-08-16
Publication date: 2007-08-22
Anticipated expiration: 2016-08-16

Abstract

The utility model relates to a new lock core. The keys used by the prior lock core are easy to be copied which are not safe enough. The problems that the utility model aims at solving is to overcome the defects of the prior art. The utility model provides a new lock core which has a good anti-theft performance. The utility model is to arrange a plurality of pin tumblers in the lock core and the pin tumblers are arranged in two lines. The upper end of the pin tumbler is provided with a restoring spring and two shrapnel corresponding to the two line pin tumblers are arranged on the position vertical to the pin tumblers in the lock core. A groove matched with the shrapnel is arranged at the lower end of the shrapnel. In the new lock core, the movement between the shrapnel and the pin tumbler as well as the restoring spring is more global. A groove is arranged on the surface that the shrapnel contacts with a lock shell and a spring as well as additional pin tumblers are arranged in the groove. The additional pin tumblers can insert into the groove of the lock shell to make the lock core not easy to be rotated by an inconsistent key. Compared with the single line pin tumblers in the prior art, the anti-theft performance of the two line pin tumblers is increased.

Description

Lock core

Technical field

The utility model relates to a kind of lock core, particularly a kind of lock core of two row's pellets shot from a slingshot.

Background technology

Existing anti-theft cylinder lock core all is single pellet shot from a slingshot generally, does not have other burglar-proof mechanism, and employed key ratio is easier to by imitated, and lock core is destroyed easily under strong external force effect, so safety inadequately.

Practical property content

The technical problems to be solved in the utility model is intended to overcome the deficiency of above-mentioned prior art, and a kind of novel lock core is provided, and this lock core theftproof performance is good.

The technical solution adopted in the utility model is: be provided with a plurality of pellets shot from a slingshot in lock core, the upper end of pellet shot from a slingshot is provided with back-moving spring, in described lock core with on the pellet shot from a slingshot upright position, be provided with shell fragment, on described pellet shot from a slingshot, be provided with the groove that matches with shell fragment with the contact lower end of position of described shell fragment.

Lock core described in the utility model, described pellet shot from a slingshot are that two row are arranged.

Between described two row's pellets shot from a slingshot and the lock housing two shell fragments of installing with the pellet shot from a slingshot upright position are arranged in the lock core described in the utility model, lock core.

Lock core described in the utility model, there is a groove at the middle part that contacts one side at described shell fragment with lock housing, and spring and additional pellet shot from a slingshot are housed in described groove.

Lock core described in the utility model, the cross section of described lock core jack is arc.

Lock core described in the utility model, the jack of described lock core are located at an end margin of lock core.

Compared with the prior art lock core of the present utility model has following good effect: the motion that is arranged so that pellet shot from a slingshot and back-moving spring of shell fragment has more globality, and lock core is difficult for by non-supporting key turns; With respect to pellet shot from a slingshot single in the prior art, the theftproof performance of the pellet shot from a slingshot that two row are arranged strengthens to some extent.

Description of drawings

Fig. 1 represents the cross-sectional structure schematic diagram of the utility model lock core;

The A-A of Fig. 2 presentation graphs 1 is to structural representation;

Fig. 3 represents the internal construction schematic diagram of the utility model lock core;

Fig. 4 represents the internal construction schematic diagram of the utility model lock core after inserting key.

The specific embodiment

With reference to accompanying drawing, will be described in detail the specific embodiment of the present utility model.

Except that this paper have especially indicate, described above-below direction is meant that as Fig. 3 and the described above-below direction of Fig. 4, promptly pellet shot from a slingshot is last towards the direction of back-moving spring.

The utility model relates to a kind of lock core, in lock core 1, be provided with pellet shot from a slingshot 5, the upper end of pellet shot from a slingshot is provided with back-moving spring 8, this lock core also is equipped with shell fragment 3 in lock core with on the pellet shot from a slingshot upright position as shown in Figure 3, on described pellet shot from a slingshot, be provided with the groove 51 that matches with shell fragment with the lower end position of described shell fragment, when key 2 inserts in the jack, concave point on the key is corresponding with corresponding pellet shot from a slingshot 5, corresponding at this moment pellet shot from a slingshot 5 is just promoted by the concave point of key and moves upward, and also promoted simultaneously to move upward with the set groove of the following extreme direction of described shell fragment 3 on the pellet shot from a slingshot 5, after moving to certain position, all grooves 51 all have been pushed to last direction and have just in time been blocked by shell fragment 3, promptly shell fragment 3 has fallen in the groove 51 as shown in Figure 4, and at this moment, key 2 just can rotational lock core 1 have been opened lock.Lock core only is provided with the structure of pellet shot from a slingshot and back-moving spring in the prior art, the motion that is arranged so that pellet shot from a slingshot 5 and back-moving spring 8 of shell fragment 3 has more globality, be that pellet shot from a slingshot 5, shell fragment 3 and back-moving spring 8 just can be made lock core 1 rotate by key 2 effects as one simultaneously, promptly when only some pellet shot from a slingshot 5 and back-moving spring 8 are pushed, make that because of the spatial obstacle of shell fragment 3 lock core 1 is difficult for being rotated by non-supporting key 2.Wherein, described pellet shot from a slingshot is that two row are arranged, and with respect to pellet shot from a slingshot single in the prior art, the theftproof performance of the pellet shot from a slingshot that two row are arranged strengthens to some extent.In lock core 1, can adopt on the one side corresponding of the upright position of two row's pellets shot from a slingshot two shell fragments 3 with matching are installed with lock housing, promptly on the upright position of two row's pellets shot from a slingshot, be equipped with shell fragment.

In the lock core of the present utility model, as shown in Figure 1, the jack of the described lock core of preferred employing is located at an end margin of lock core, and with prior art in that jack is located at the structure of lock core central authorities is different, such structure makes the length of pellet shot from a slingshot 5 and back-moving spring 8 increase to some extent than common lock core, for key 2 permissible accuracies, promptly non-supporting key more is difficult for rotational lock core when therefore also just having strengthened lock core 1 rotation.The cross section of lock core jack of this moment and supporting key shape thereof can be common pancake, i.e. planar shaped key, also can for as shown in Figure 1 arc 10.Wherein, the cross section that preferably adopts the lock core jack is arc, and supporting key also is arc, and the machining accuracy height of the designing requirement of arc key and lock core jack makes the difficulty of forging strengthen, and has therefore further strengthened theftproof performance.

In the lock core of the present utility model, described theftproof lock housing is provided with the draw-in groove that matches with described shell fragment 3, and promptly when a key was extracted, shell fragment 3 had a groove 9 with the middle part of lock housing contact surface, and spring 4 and additional pellet shot from a slingshot 6 are housed in described groove 9.Additional pellet shot from a slingshot 6 moves to housing under the effect of back-moving spring 4, therefore the additional pellet shot from a slingshot 6 on the shell fragment 3 is blocked by draw-in groove 7 with matching on the housing with regard to the outer rim of exposing lock core, must insert this moment key just might make on the additional pellet shot from a slingshot disengaging lock housing on the lock core inner shrapnel draw-in groove 7 and rotate.

Claims

1, a kind of lock core, in lock core (1), be provided with a plurality of pellets shot from a slingshot (5), the upper end of pellet shot from a slingshot is provided with back-moving spring (8), it is characterized in that being provided with shell fragment (3) with the pellet shot from a slingshot upright position in the described lock core, go up with the contact lower end of position of described shell fragment (3) at described pellet shot from a slingshot (5) and be provided with the groove (51) that matches with shell fragment.

2, lock core according to claim 1 is characterized in that described pellet shot from a slingshot (5) is that two row are arranged.

3, lock core according to claim 2 is characterized in that between interior described two row's pellets shot from a slingshot of lock core and the lock housing two shell fragments of installing with the pellet shot from a slingshot upright position (3) being arranged.

4, lock core according to claim 3 is characterized in that there is a groove (9) at the middle part that contacts one side at described shell fragment (3) with lock housing, is equipped with spring (4) and additional pellet shot from a slingshot (6) in described groove (9).

5, lock core according to claim 4, the cross section that it is characterized in that described lock core jack are arc (10).

6,, it is characterized in that the jack of described lock core is located at an end margin of lock core according to the described lock core of the arbitrary claim of claim 1-5.