CN2339706Y

CN2339706Y - Safety lock

Info

Publication number: CN2339706Y
Application number: CN 98221331
Authority: CN
Inventors: 刘进柱
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-05-29
Filing date: 1998-05-29
Publication date: 1999-09-22
Anticipated expiration: 2008-05-29

Abstract

The utility model discloses a structure of improved safety lock on the basis of mechanical spring lock, which is particularly suitable for spring padlock. The safety lock consists of a lock body, a lock ring, a lock tongue, a lock core, a spring and a marble, and is characterized in that a stop pin (10) is sleeved in a marble spring (7), the end part of a right lock tongue (5) is a vertical section, and an anti-pulling ring (11) is additionally arranged on the lock ring (2). The stop pin prevents a lawless person from unlocking by using a master key, and the anti-shifting ring and the right lock tongue with the vertical section simultaneously provide double protection for the safety lock, prevent someone from inserting a sheet from the inner side of the lock ring to shift the lock, and therefore the safety and the reliability of the spring lock are improved.

Description

Safety lock

The utility model relate to a kind of on the mechanical cylinder lock basis improved safety lock, especially have the spring padlock of lock ring.

The mechanical cylinder lock that generally uses is simple in structure, cheap in daily life, is subjected to users' welcome deeply, has vast market.But its structure itself yet exists some defectives, has influenced the safety of lock.The spring padlock that for example has, the end of its left and right sides dead bolt and lock ring engagement is the inclined-plane, and this inclined-plane embeds in the skewed slot of lock ring corresponding position when lock-out state.When inserting along lock ring is inboard with hard and thin tablet, dead bolt is deviate from from the skewed slot of lock ring, thereby lock is opened, make the person that illegally do not unblank that opportunity be arranged.In addition, the person that illegally do not unblank also may use master key that lock is opened.

The utility model is improved on the basis of existing technology, purpose is both to have kept simple in structure, the cheap advantage of mechanical cylinder lock, has improved the safety of lock again, the safety lockset of it is become a kind ofly anti-ly dial, preventing universal key being unblanked.

The utility model is made up of lock body, lock ring, lock core, dead bolt, pellet shot from a slingshot and spring, it is characterized in that having at least in one group of marble spring and be with latch, right dead bolt end is a vertical cross-section, when lock-out state, embed in the groove of lock ring corresponding position, the intersection that the right bar of lock ring inserts lock body is fixed with anti-ring, and anti-ring can not move up and down.

It is conical that the end of latch is, and the interior length D of cylinder lock core (3) is inserted apart from gap L and this pellet shot from a slingshot of pellet shot from a slingshot (6) afterbody in its top ₁, D ₂Relation be: D ₁≤ L ((D ₁+ D ₂).

The said safety lock of the utility model from the appearance, many circles are prevented the ring on lock ring, with common cylinder lock and indifference, open method is also identical, promptly, insert this lock key from the keyhole of lock body bottom, rotate, make the latch bolt spring pressurized and drive left and right dead bolt and from the groove of lock ring, deviate from, under the elastic force effect of main spring, lock ring ejects, and lock is opened.When the person's attempt of illegally not unblanking was opened this safety lock with master key, because the effect of latch, master key can not be released pellet shot from a slingshot outside the cylinder lock core, so the cylinder lock core can not rotate the possibility of having avoided master key to unblank.In addition, because anti-ring and have the double protection effect of the right dead bolt of square-section, the person that illegally do not unblank can not will approach and hard circular arc board inserts the gap of lock ring and lock body and pushes right dead bolt aside, and lock can not be opened.Therefore, this safety lock has prevented person's the behavior of illegally not unblanking from two aspects, has improved the safety of cylinder lock.In like manner, increasing latch watches out for the method that master key unblanks and also extends in all mechanical cylinder locks.

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is further described.Accompanying drawing is a structural representation of the present utility model.Among the figure, the 1-lock body, the 2-lock ring, the 3-lock core, 4-left side dead bolt, the right dead bolt of 5-, the 6-pellet shot from a slingshot, the 7-marble spring, the 8-main spring, 9 latch bolt springs, the 10-latch, 11-prevents ring, the 12-keyhole.

Embodiment of the present utility model is a kind of mechanical billiard padlock, is made up of lock body 1, U-shaped lock ring 2, cylinder lock core 3, left and right sides dead bolt and pellet shot from a slingshot, spring.The permutation and combination method of lock core 3 and pellet shot from a slingshot 6, pellet shot from a slingshot 6 is all same as the prior art.Be with latch 10 respectively in five groups of marble springs 7, it is conical that stop pin end is, and equals the length D that this pellet shot from a slingshot inserts the cylinder lock in-core with the gap L of pellet shot from a slingshot 6 afterbodys.Left side dead bolt 4 is the sloping section, shape and working method are same as the prior art, the end of right dead bolt 5 is the vertical rectangle cross section, when lock-out state, embed in the U-shaped lock ring 2 corresponding rectangular recess, the intersection on plane on the right bar of U-shaped lock ring and lock body 1, fixing anti-ring 11, at lock-out state, anti-ring is close to lock body 1 surface, make illegally do not unblank the person from here the insertion instrument dial lock, the latch of safety lock can not rotate the possibility of having avoided master key to unblank after making master key insert.

Claims

1, a kind of on the basis of mechanical cylinder lock improved safety lock, comprise lock body, lock ring, lock core, dead bolt, pellet shot from a slingshot and spring, it is characterized in that, have at least and be with latch (10) in one group of marble spring (7), right dead bolt (5) end is a vertical cross-section, when lock-out state, embed the groove of the right bar of lock ring (2) corresponding position, on the right bar of lock ring (2), be fixed with anti-ring (11).

2, safety lock according to claim 1 is characterized in that the right-hand member of said latch (10) is conical, and the interior length D of cylinder lock core (3) is inserted apart from gap L and this pellet shot from a slingshot of pellet shot from a slingshot (6) afterbody in its top ₁, D ₂Relation be: D ₁≤ L ((D ₁+ D ₂).

3, safety lock according to claim 1 is characterized in that the vertical cross-section of said right dead bolt (5) end is a rectangle, and the groove on the right bar of said lock ring (2) is and the corresponding rectangular channel of right dead bolt.