CN203835051U - Lock cylinder protecting device - Google Patents

Abstract

The utility model discloses a lock cylinder protecting device. The lock cylinder protecting device comprises a lock cylinder body (1), a lock cylinder (10) and a key (7), wherein a lock cylinder protecting cap (9) is fixed to the end face of the lock cylinder (10) and provided with a key inserting hole (11) matched with a key hole; a plugging device (5) capable of moving vertically is installed in the lock cylinder protecting cap (9); a guide rod is arranged at the upper portion of the plugging device (5) and sleeved with a spring (4); the upper portion of the guide rod is arranged in a through hole (3) of the lock cylinder protecting cap (9) and is flush with the outer surface of the lock cylinder protecting cap (9); the lock cylinder body (1) is provided with a blind hole (2) corresponding to the guide rod; a plugging sheet is located at the lower portion of the plugging device (5) and arranged on a channel between the key inserting hole (11) and the key hole; the key (7) is provided with a key notch (8) matched with the plugging sheet. By the adoption of the structure, the shortcoming of the poor anti-prying property is overcome, and the lock cylinder protecting device has the advantages of being simple in structure, convenient to assemble, good in technical opening preventing capacity and the like.

Description

Lock core protector

Technical field

The utility model relates to a kind of lock pin protecting equipment, particularly a kind of lock core keyhole protector of energy antitheft.

Background technology

Existing mechanical lock profile is ever-changing, but mechanical lock head internal construction is basic identical, mainly by parts such as lock core body, lock core, keys, formed, when key inserts the keyhole of lock core, pellet assembly on lock core moves up and down with lock core external surface and maintains an equal level, lock core can freely rotate relative to lock core body under key drives, and tapered end just can be opened.When transfering to key, the pellet assembly on lock core misplaces up and down, and lock core can not rotate relative to lock core body, thereby realizes the object of locking.But the main weak point that mechanical lock head exists is at present antitheft poor performance, easily in the keyhole of non-key-shaped tool insertion tapered end, opened, as master key, its performance can not meet the requirement of people to safety far away.For effectively stopping this type of phenomenon, occur, many manufacturers and knowledgeable people have carried out fruitfully R and D, but not yet have so far rational product to emerge.

Summary of the invention

The problems referred to above that exist in order to overcome existing machinery tapered end, the purpose of this utility model is to provide a kind of simple and reasonable, easy to assembly, antitheft successful, lock core protector that theftproof performance is good.

The utility model solves the technical scheme that its technical problem adopts, it comprises lock core body, lock core, key, lock core is arranged in lock core body, lock core is provided with the keyhole matching with key, described lock core end face is fixed with lock core hard hat, on lock core hard hat, have the key hole matching with keyhole, plugging device moving up and down is installed in lock core hard hat, the top of plugging device is guide peg, on guide peg, be arranged with spring, guide peg top is arranged on the through hole of lock core hard hat and with lock core hard hat external surface and maintains an equal level, lock core body is provided with the blind hole corresponding with guide peg, the bottom of plugging device is plugging sheet, plugging sheet is arranged on the passage between key hole and keyhole.

The described key notch matching with plugging sheet that is provided with on the key.

Adopt after said structure, the utility model has the following advantages and effect compared with the prior art: the one, when using pirate of the open instrument to unblank, plugging device is subject to the extruding of pirate of the open instrument and rises, the guide peg on plugging device top enters the interior lock core that pins of blind hole of lock core body, lock core can not be rotated relative to lock core body, thereby effectively improved the security performance of the anti-technical opening of mechanical lock head; The 2nd, because lock core internal construction does not change, all mechanical lock heads can be realized, and implement simple and conveniently, with better simply structural change and lower cost, just can realize the upgrading of theftproof performance.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Fig. 2 is that schematic diagram is looked on a left side for the utility model lock core hard hat.

Fig. 3 is the A-A cross-sectional view of the utility model Fig. 1.

1 lock core body wherein, 2 blind holes, 3 through holes, 4 springs, 5 plugging devices, 6 catch, 7 keys, 8 key notches, 9 lock core hard hats, 10 lock cores, 11 key holes.

The specific embodiment

Fig. 1, shown in Fig. 2 and Fig. 3, specific embodiments for the utility model lock core protector, it comprises lock core body 1, lock core 10, key 7, lock core 10 is arranged in lock core body 1 rotationally, lock core 10 is provided with the keyhole matching with key 7, described lock core 10 end faces are fixed with lock core hard hat 9, on lock core hard hat 9, have the key hole 11 matching with keyhole, in lock core hard hat 9, by catch 6, plugging device 5 moving up and down is installed, the top of plugging device 5 is guide peg, on guide peg, be arranged with spring 4, guide peg top is arranged on the through hole 3 of lock core hard hat 9 and with lock core hard hat 9 external surfaces and maintains an equal level, lock core body 1 is provided with the blind hole corresponding with guide peg 2, the bottom of plugging device 5 is plugging sheet, plugging sheet is arranged on the passage between key hole 11 and keyhole.Described key 7 is provided with the key notch 8 matching with plugging sheet.

When inserting key 7 on key hole 11, on key 7, the different teeth groove extruding pellet assembly of height, moves up and down pellet assembly, causes pellet assembly afterbody and lock core 10 external surfaces to maintain an equal level; Meanwhile, the plugging sheet of plugging device 5 falls in key notch 8, and the guide peg of plugging device 5 and lock core hard hat 9 external surfaces maintain an equal level, and lock core 10 relatively rotates with lock core body 1 under key 7 drives, thereby realizes the object of unblanking.When transfering to key, the pellet assembly on lock core 10 misplaces up and down, and lock core 10 can not rotate relative to lock core body 1, thereby realizes the object of locking.Meanwhile, plugging device 5 is under the elastic force effect of spring 4, and the plugging sheet of its underpart moves on the passage between key hole 11 and keyhole, plugging sheet sealing key hole, thus effectively improved antitheft performance.

When opening with pirate of the open instrument, the plugging sheet of plugging device 5 is subject to the extruding of pirate of the open instrument and rises, the guide peg on plugging device 5 tops enters the interior pinning lock core 10 of blind hole 2 of lock core body 1, now, even if being subject to the extruding of pirate of the open instrument, pellet assembly all maintains an equal level with lock core 10 external surfaces, lock core 10 can not rotate relative to lock core body 1 because guide peg inserts in blind hole 2, thereby has effectively improved the security performance of the anti-technical opening of mechanical lock head.

The above; just specific embodiment of the utility model, not makes any pro forma restriction to the utility model, is not departing from the technical solution of the utility model basis; the simple modification of having done, equivalent variations or modification, all fall into protection domain of the present utility model.

Claims (2)

1. a lock core protector, comprise lock core body (1), lock core (10), key (7), lock core (10) is arranged in lock core body (1), lock core (10) is provided with the keyhole matching with key (7), it is characterized in that: described lock core (10) end face is fixed with lock core hard hat (9), on lock core hard hat (9), have the key hole (11) matching with keyhole, plugging device moving up and down (5) is installed in lock core hard hat (9), the top of plugging device (5) is guide peg, on guide peg, be arranged with spring (4), the through hole (3) that guide peg top is arranged on lock core hard hat (9) above and with lock core hard hat (9) external surface maintains an equal level, lock core body (1) is provided with the blind hole corresponding with guide peg (2), the bottom of plugging device (5) is plugging sheet, plugging sheet is arranged on the passage between key hole (11) and keyhole.

2. lock core protector according to claim 1, is characterized in that: described key (7) is provided with the key notch (8) matching with plugging sheet.