CN1584268A - Tapered end and key of bullet lock - Google Patents

Abstract

The present invention discloses a lock head of cylinder lock and its key. It is mainly characterized by that in the interior of lock shell a medium lock core is set, and in the interior of the medium lock core an intenal lock core is set, on two lock cores the ball holes are respectively set, the ball is mounted in the ball hole, and the central position of the described internal lock core is equipped with lock hole, on the edge of said lock hole a slot is cut, and is communicated with the lock hole, and the lock hole face of the described internal lock core is perpendicular to the ball hole on the intenal lock core, and the described slot is matched with ball on the medium lock core, the described lock shell and ball holes on the medium lock core and internal lock core can be mutually communicated when said lock is unlocked, and the front and side track of the key plate can be matched with balls on the internal lock core and medium lock core respectively.

Description

A kind of cylinder lock head and key

[technical field]

What the present invention relates to is a kind of lock, particularly be a kind of cylinder lock.

[background technology]

In the prior art, lock is various, make a lot of variety, cylinder lock particularly, its structure is different, the performance various kinds, look into Chinese patent, notice of authorization number is CN117911C, name is called the patent of invention of a kind of anti-theft cylinder lock and key, its summary of the invention is to describe like this: " a kind of cylinder lock head; comprise lock body; lock core; pellet shot from a slingshot; pellet shot from a slingshot return spring; shift fork, it is characterized in that lock body circular hole inboard has the square groove, have the side column groove on the lock core, the pellet shot from a slingshot hole, the side column groove is inboard to communicate with the side in pellet shot from a slingshot hole, and with pellet shot from a slingshot hole approximate vertical, the side column groove outside can be corresponding with the square groove of lock body inboard, one circle  type groove is all arranged on each pellet shot from a slingshot, be provided with locking column in the side column groove, the inboard of locking column is the  type, can match with the  type groove on the pellet shot from a slingshot, the outside of locking side column is a square, can match with the square groove of lock body circular hole inboard, locking side column is provided with step, and is fixed with pressing plate on the corresponding side column groove of the step outside, between the step of pressing plate and locking side column, be provided with the locking side column return spring, the edge that lockhole on the lock core is positioned at lock core is semiclosed shape, and the hole flank of tooth is vertical with pellet shot from a slingshot, and the installation site of lock core upper shift fork is not on lockhole.With the key that above-mentioned cylinder lock head matches, its tartar, gathering sill all are positioned at the front of key piece, and the reverse side of key piece is a circular arc." cylinder lock of this structure; its theftproof performance no doubt increases; but its structure too complex; no matter be tapered end or key; its manufacture craft is very complicated; and because the suitable difficulty of the  type groove machining accuracy on its pellet shot from a slingshot, if the processing of  type groove is too dark, whole cylinder lock will inevitably fracture pellet shot from a slingshot and destroys whole lockset, the production technology that it is complicated under the bump of weight, also improved cost of production, how making lock simple in structure, and have good theftproof performance, is that those skilled in that art want to solve and insoluble problem always.

[summary of the invention]

In view of the problem that known technology exists, the object of the present invention is to provide a kind of simple in structurely, theftproof performance is good, the cylinder lock of low production cost.For achieving the above object, the present invention takes following scheme to finish: a kind of cylinder lock head, has lock housing, described lock housing is provided with the pellet shot from a slingshot hole, described pellet shot from a slingshot hole is built-in with spring and little pellet shot from a slingshot, it is characterized in that being provided with in the described lock housing middle lock core, and in described, be provided with internal cylinder in the lock core, the center of described internal cylinder is provided with lockhole, be respectively equipped with one group of pellet shot from a slingshot hole on lock core and the internal cylinder in described, edge at described lockhole has elongated slot, and communicate with lockhole, all be equipped with pellet shot from a slingshot in the pellet shot from a slingshot hole of described middle lock core and internal cylinder, the lockhole face of described internal cylinder is vertical with the pellet shot from a slingshot of internal cylinder, described elongated slot matches described lock housing with pellet shot from a slingshot on the middle lock core, pellet shot from a slingshot hole on middle lock core and the internal cylinder is interconnected when unblanking; On the described internal cylinder one group of pellet shot from a slingshot hole hole count than in one group of pellet shot from a slingshot hole count on the lock core and one group of pellet shot from a slingshot hole count on the lock housing lack.

With the key that above-mentioned cylinder lock head matches, the front and the side of key piece are equipped with tartar, and the tartar in described key piece front matches with the pellet shot from a slingshot on the internal cylinder, and the tartar of described key piece side matches with pellet shot from a slingshot on the middle lock core.

When above-mentioned cylinder lock is unblanked, key is inserted lockhole, pellet shot from a slingshot on the internal cylinder is with after the tartar in key piece front matches, under the effect of lock housing pellet shot from a slingshot hole inner spring, promote the pellet shot from a slingshot of internal cylinder by lock housing and middle lock core marble, when pellet shot from a slingshot end on the internal cylinder is all overlapped with the excircle arc surface of internal cylinder, rotate 270 ° of internal cylinder, pellet shot from a slingshot on the lock core is all matched with the tartar of key piece side by elongated slot, pellet shot from a slingshot end face on the middle lock core also all overlaps with the excircle arc surface of middle lock core, because the pellet shot from a slingshot of middle lock core is stuck in the elongated slot of internal cylinder, is rotated further internal cylinder, lock core rotates in can driving, and reaches the purpose of unblanking.

The present invention adopts two lock cores, and pellet shot from a slingshot hole and pellet shot from a slingshot are set on each lock core, each pellet shot from a slingshot matches with the tartar of front on the key, be equivalent to two keys and two lock cores concentrate on same locking, have good theftproof performance and security performance, its simple structure has reduced cost of production.Compared with prior art, have outstanding substantive distinguishing features and obvious improvement.

[description of drawings]

The present invention has following accompanying drawing:

Fig. 1 is a decomposition of the present invention back structural representation;

Fig. 2 is the internal construction schematic diagram when not inserting key;

Fig. 3 inserts internal construction schematic diagram behind the key for the present invention;

The internal construction schematic diagram of Fig. 4 during for 270 ° of key turns of the present invention.

[specific embodiment]

Accompanying drawing has been represented structure of the present invention and embodiment, further describes each relevant details of embodiment below more in conjunction with the accompanying drawings.This cylinder lock head, has lock housing 2, described lock housing 2 is provided with pellet shot from a slingshot hole 1, described pellet shot from a slingshot hole 1 is built-in with spring 5 and submissile 6, during installation, the pellet shot from a slingshot nose end in lock housing 2 outsides is shut, lock core 4 in being provided with in the described lock housing 2, in described, be provided with internal cylinder 15 in the lock core 4, middle lock core 4 and internal cylinder 15 coaxial installations, the center of described internal cylinder 15 is provided with lockhole 9, is respectively equipped with one group of pellet shot from a slingshot hole 3 on described middle lock core 4 and the internal cylinder 15,11, pellet shot from a slingshot 7 all is installed in each pellet shot from a slingshot hole, 10, have elongated slot 8 at the edge of described lockhole 9, and communicate with lockhole 9, the lockhole face of described internal cylinder 15 is vertical with the pellet shot from a slingshot 10 of internal cylinder 15, described elongated slot 8 matches described lock housing 2 with pellet shot from a slingshot 7 on the middle lock core 4, pellet shot from a slingshot hole 1 on middle lock core 4 and the internal cylinder 15,3,11 are interconnected when unblanking; On the described internal cylinder 15 one group of pellet shot from a slingshot hole 11 hole count than in one group of pellet shot from a slingshot hole 3 hole count on the lock core 4 and one group of pellet shot from a slingshot hole 1 hole count on the lock housing 2 lack; In the present embodiment, lock housing 2 and middle lock core 4 are provided with six pellet shot from a slingshot holes 1,3, and internal cylinder 15 is provided with five pellet shot from a slingshot holes 11.The key that matches with above-mentioned cylinder lock head, the front of its key piece 12 and side are equipped with tartar 14,13, the tartar 14 in described key piece front matches with pellet shot from a slingshot 10 on the internal cylinder 15, and the tartar 13 of described key piece side matches with pellet shot from a slingshot 7 on the middle lock core 4.During locking of the present invention, because pellet shot from a slingshot hole 3 on the middle lock core 4 and the pellet shot from a slingshot hole 1 on the lock housing 2 and the pellet shot from a slingshot hole on the internal cylinder 15 are interconnected, because the effect of lock housing 2 pellet shot from a slingshot holes 1 inner spring 5, make each pellet shot from a slingshot 6,7,10 fall the pellet shot from a slingshot hole 3 of middle lock core 4 and internal cylinder 15 disorderly, in 15, each pellet shot from a slingshot 7 in the middle lock core 4 have one section also in pellet shot from a slingshot hole 3, there is one section then in the pellet shot from a slingshot hole 11 of internal cylinder 15, adopting general master key is to be difficult to the pellet shot from a slingshot on pellet shot from a slingshot on the internal cylinder 15 10 and the middle lock core 47 is overlapped with the excircle arc surface of each lock core simultaneously, so the very difficult cylinder lock that will have structure of the present invention is opened, and plays extraordinary theftproof performance and security performance; When unblanking, after the key that will match with cylinder lock head structure of the present invention inserts lockhole 9, pellet shot from a slingshot 10 on the internal cylinder 15 is with after the tartar 14 in key front matches, the end of pellet shot from a slingshot 10 all overlaps with the periphery arc surface of each internal cylinder on the internal cylinder 15, can rotate internal cylinder this moment, but since the pellet shot from a slingshot hole 11 on the internal cylinder 15 than in pellet shot from a slingshot hole 3 on the lock core 4 lack one, so a pellet shot from a slingshot on the middle lock core 4 still blocks middle lock core, and lock core 4 in can not rotating, when internal cylinder 15 is rotated 270 °, make the tartar face of key piece 12 sides vertical with pellet shot from a slingshot 7 on the middle lock core 4, simultaneously, pellet shot from a slingshot 7 on the middle lock core 4 all falls into the elongated slot 8 on the internal cylinder 4, and match with the tartar 13 of key piece side, the end of pellet shot from a slingshot 7 also all overlaps with the periphery arc surface of middle lock core 4 on the middle lock core 4, be rotated further internal cylinder 15, lock core 4 rotated during elongated slot 8 on the internal cylinder 15 drove by the pellet shot from a slingshot on the middle lock core 47, and reach the purpose of unblanking, want locking this moment, key forwards the pellet shot from a slingshot hole of each lock core to and is interconnected, when having arrived initial unlocking condition, pull out key, promptly lockable.The present invention utilizes a key and a cylinder lock head, has reached the anti-theft effect of two keys and two tapered ends.This shows that structure of the present invention is quite simple, but theftproof performance is good, will brings positive result of use to users.

Claims (3)

1, a kind of cylinder lock head, has lock housing (2), described lock housing (2) is provided with pellet shot from a slingshot hole (1), described pellet shot from a slingshot hole (1) is built-in with spring (5) and little pellet shot from a slingshot (6), it is characterized in that being provided with in the described lock housing (2) middle lock core (4), and in described, be provided with internal cylinder (15) in the lock core (4), the center of described internal cylinder (15) is provided with lockhole (9), be respectively equipped with one group of pellet shot from a slingshot hole (3 on lock core (4) and the internal cylinder (15) in described, 11), have elongated slot (8) at the edge of described lockhole (9), and communicate with lockhole (9), all be equipped with pellet shot from a slingshot (7 in the pellet shot from a slingshot hole (3,11) of described middle lock core (4) and internal cylinder (15), 10), the lockhole face of described internal cylinder (15) is vertical with the pellet shot from a slingshot (10) of internal cylinder (15), and described elongated slot (8) matches described lock housing (2) with pellet shot from a slingshot (7) on the middle lock core (4), pellet shot from a slingshot hole (1 on middle lock core (4) and the internal cylinder (15), 3,11) when unblanking, be interconnected.

2, cylinder lock head according to claim 1, it is characterized in that the last one group of pellet shot from a slingshot hole of described internal cylinder (15) (11) hole count than in one group of pellet shot from a slingshot hole (3) hole count on the lock core (4) and one group of pellet shot from a slingshot hole (1) hole count on the lock housing (2) lack.

3, the key that matches of a kind of and above-mentioned cylinder lock head, the front and the side that it is characterized in that key piece (12) are equipped with tartar, the tartar (14) in described key piece front matches with pellet shot from a slingshot (10) on the internal cylinder (15), and the tartar (13) of described key piece side matches with pellet shot from a slingshot (7) on the middle lock core (4).

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