CN211874146U - Anti-prying lock cylinder - Google Patents

Abstract

The utility model relates to a tool to lock technical field discloses a pick-proof lock core, include: the cylinder lock core, the preceding of cylinder lock core are the key hole, and the top surface of cylinder lock core is equipped with at least one lower post hole, and lower post hole and key hole intercommunication are put into a lock post, and the top of lower lock post is the lock post, and the both sides in lower post hole still are equipped with pick-proof groove to and still be equipped with a movable block in lower post hole, the movable block be in the top of lock post down and with the drill way parallel and level in lower post hole, the lower extreme of going up the lock post be cone head or convex part and with the movable block contact. The utility model discloses a through the surface structure who changes the lock core, increase movable block and pick-proof groove, make it can resist action such as violence strikes, sled, has strengthened the pick-proof toughness of lock core, improves the toughness and the security of tool to lock to the safety of guarantee property.

Description

Anti-prying lock cylinder

Technical Field

The utility model relates to a tool to lock technical field especially indicates a lock core (also known as lock courage) that has the pick-proof function that is applicable to the lock.

Background

At present, a lockset mainly comprises a lock shell and a lock core, wherein the lock shell is provided with a lock core hole for the lock core to be matched and arranged, the top wall of the lock core hole is provided with a row of alternate upper column holes, an upper lock column with a spring is arranged in each upper column hole, the lock core is a cylinder, the front part of the lock core is a key hole for a key to be inserted, a shape structure matched with the key is arranged in the key hole, the top of the lock core is provided with lower column holes which are in one-to-one correspondence with the upper column holes, and a lower lock column is arranged in each lower column hole. When the lock is in an upper locking state, the upper locking column is subjected to spring force, and the lower end of the upper locking column pushes and presses the lower locking column and is placed in the lower column hole, so that the lock core cannot rotate for 360 degrees; otherwise, when the lock is unlocked, the matched key is used for upwards jacking each locking column, so that the locking columns are separated from the lower column holes, and the lock cylinder can be rotated to unlock. Based on the structure and the working mode of the lockset, if the lock cylinder is knocked and pried by violence, the upper lock cylinder is separated from the lower cylinder hole very easily, so that the purpose of priing the lockset is achieved, and property theft and loss are caused.

Disclosure of Invention

The utility model discloses an aim at solving above-mentioned tool to lock and have the defect of being prized by violence, provide a lock core that can strengthen tool to lock pick-proof function.

In order to achieve the above purpose, the utility model discloses a: the cylinder lock core, the preceding key hole that is of this cylinder lock core, the top surface of cylinder lock core is equipped with at least one lower post hole, and lower post hole and key hole intercommunication are put into a lock post, and the top of lock post is for locking the post down, the both sides in lower post hole still are equipped with pick-proof groove to and still be equipped with a movable block in lower post hole, this movable block is in the top of lock post down and with the drill way parallel and level in lower post hole, the lower extreme of locking the post is conical head or convex part and contacts with the movable block.

Among this technical scheme, when the tool to lock is in the state of locking, the lock is locking the post and is pushing against the movable block, the movable block is in down the downthehole and rather than drill way parallel and level, if the lock core is left, right rotation, the pick-proof inslot on both sides can be arranged in to cone head or the convex part of going up the lock post, receive its restriction, make the lock core just unable complete rotation, can not realize the purpose of unblanking promptly, under this condition, even meet various violence and strike, the action of sled lock core, also be difficult to make the lock post break away from the pick-proof groove, thereby reinforcing lock core pick-proof toughness. On the contrary, when the lock is unlocked, a matched key needs to be inserted into the key hole, the lower lock cylinder is upwards pressed by the sawtooth part of the key, the top of the lower lock cylinder is flush with the orifice of the lower cylinder hole, the movable block is separated from the lower cylinder hole and is placed into the upper cylinder hole along with the upper lock cylinder, and at the moment, the lock cylinder can rotate by 360 degrees, so that the unlocking purpose is realized. In addition, the upper column hole mentioned here is provided on the lock cylinder hole of the lock case for placing the upper column.

Preferably, at least one pair of symmetrical positioning holes communicated with the key hole are formed in the two side faces of the cylinder lock core, and a movable positioning column with a spring is placed in each positioning hole. Because the movable positioning columns in the prior art do not have springs, the hole walls of the two sides of the lock cylinder hole are provided with symmetrical grooves, the grooves on the two sides provide extended movement space for the movable positioning columns, when the lock cylinder rotates, the movable positioning columns on the two sides are pressed in towards the key hole direction under the action of height change of the grooves, the movable positioning columns are matched with the positioning grooves on the two sides of the key to lock the position of the key, the deviation of the shape and the structure of the key and the key hole is reduced, and the key is prevented from being pulled and deviated from the key hole care. However, when the movable positioning column returns, the movable positioning column needs to be taken out of the key, and if the movable positioning column cannot completely return, the problems of unsmooth key insertion and key clamping can be caused when the key is inserted or pulled out again.

Compared with the prior art, the utility model, through the surface structure who changes the lock core, increase movable block and pick-proof groove, make it can resist action such as violence strikes, sled, strengthened the pick-proof toughness of lock core, improve the toughness and the security of tool to lock to the safety of guarantee property.

Drawings

Fig. 1 is a structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a state diagram of the present invention.

Fig. 4 is a second state diagram of the present invention.

Detailed Description

As shown in fig. 1 and fig. 2, the present invention includes: the lock core comprises a lock core body, wherein the lock core body 1 is a cylinder, a key hole 2 is formed in the front of the lock core body, a structural shape matched with the shape of a key is formed in the key hole, six lower column holes 3 are formed in the top surface of the lock core body and are alternately arranged in a row, and all the lower column holes are communicated with the inside of the key hole. Lower lock posts 8 with different lengths are respectively arranged in each lower post hole, each lower lock post is used for corresponding matching with the sawtooth part of a key, and meanwhile, a movable block 6 is further arranged in each lower post hole and supported by the corresponding lower lock post 8 and is parallel and level to the hole opening of the lower post hole. In addition, two sides of each lower column hole are provided with symmetrical anti-prying grooves 4, and the anti-prying grooves are designed to be right-angle grooves.

The upper part of the movable block 6 is provided with a locking column 7, the upper part of the locking column is provided with a pressure spring (not shown in the figure), the pressure spring can provide downward pressure for the locking column, the lower end of the locking column is provided with a conical head or adopts a convex part and is contacted with the movable block, when the lock core rotates left and right, the locking column is limited by the anti-prying groove 4, so that the lock core can only rotate locally, and can not rotate completely by 360 degrees, thereby limiting the unlocking function of the lock core.

In a preferred embodiment, two rows of symmetrical positioning holes 5 are further provided on two sides of the lock cylinder, and the positioning holes of each row of positioning holes are arranged at intervals and are communicated with the inside of the key hole 2. In addition, a movable positioning column 11 is arranged in each positioning hole, and a spring 12 is sleeved on each positioning column, so that the resetting effect can be realized when the positioning column moves in the positioning hole. Of course, one or another number of positioning holes 5 can be provided here, depending on the configuration of the key.

The lock shell adopted by the lock core is in the prior art, the lock shell is provided with a lock core hole for the lock core to be matched and placed in, and the lock core can rotate in the lock core hole for 360 degrees. The top wall of the lock cylinder hole is provided with upper column holes which are in one-to-one correspondence with the lower column holes, and the upper lock columns and the pressure springs thereof which are corresponding to the upper column holes are arranged in the upper column holes and the movable blocks are arranged when the movable blocks move. Referring to fig. 2, two symmetrical grooves 9 are arranged on two side walls of the lock cylinder hole, and the movable positioning column returns after moving in the positioning hole.

The key matched with the lock cylinder is in the prior art, the two sides of the key are provided with the guide grooves and the positioning grooves, the positioning grooves are matched and positioned with some movable positioning columns of the lock cylinder, other movable positioning columns have the function of pressing the key, and the top of the key is provided with the irregular sawtooth part.

As shown in fig. 3, the state of locking of lock core, lower lock post 8 and movable block 6 all are in down the post downthehole, and the drill way parallel and level in movable block and lower post hole, and upper lock post 7 is located the movable block top and contacts with it, at this moment, if anticlockwise rotation lock core, the conical head of upper lock post just can block in pick-proof groove 4 on the right, and in the same way, if clockwise rotation lock core, the conical head of upper lock post can block in the pick-proof groove on the left side, it is visible, can effectively realize the restriction lock core through the pick-proof groove and rotate completely.

As shown in fig. 4, when a correct key is inserted into the unlocked state of the lock cylinder, the sawtooth part of the key can move the corresponding lower lock cylinder 8 upwards, and the top end of the lower lock cylinder is flush with the orifice of the lower cylinder hole, at this time, the movable block 6 is separated from the orifice of the lower cylinder hole, so that the movable block is positioned above the lower cylinder hole and enters the upper cylinder hole along with the upper lock cylinder 7, at this time, the lock cylinder can rotate 360 degrees, and the unlocking action is realized.

Claims (2)

1. An anti-picking lock cylinder comprising: cylinder lock core (1), the preceding key hole (2) that is of this cylinder lock core, the top surface of cylinder lock core is equipped with at least one lower post hole (3), lower post hole and key hole intercommunication and put into a lock post (8), the top of lower lock post is lock post (7) on, its characterized in that, the both sides in lower post hole still are equipped with pick-proof groove (4) to and still be equipped with a movable block (6) in lower post hole, this movable block be in the top of lock post down and with the drill way parallel and level in lower post hole, the lower extreme of going up lock post (7) is cone head or convex part and contacts with the movable block.

2. The anti-prying lock core according to claim 1, wherein at least one pair of symmetrical positioning holes (5) communicated with the key hole are formed in the two side surfaces of the cylinder lock core, and a movable positioning column (11) with a spring is arranged in each positioning hole.

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