CN204199882U - Lock core - Google Patents

Abstract

The utility model relates to field of lockset, is specifically related to a kind of lock core; A kind of lock core, comprise plug body, clamping block, sleeve and lock core blade, plug body is arranged in sleeve, clamping block is arranged in plug body, clamping block upper end protrudes from plug body and is positioned at the lock slots of sleeve, the keyhole that described lock core blade comprises blade body and formed in blade body, blade body upper end is formed with the V-shaped groove coordinated with clamping block, and side, blade body lower end is formed with spring base; Keyhole upper center is formed with the first projection coordinated with mill teeth in key, keyhole upper end edge is formed with the second projection coordinated with the outer mill teeth of key, lock core blades installation is in plug body, the utility model is by changing the structure of lock core blade, lock core blade is provided with the first projection and the second projection, first projection and the second projection need simultaneously with on the key in mill teeth and outer mill teeth coordinate and just can open lock, therefore substantially increase the avoiding improper opening function of lock core, also improve the anti-technology unlocking performance of lock core simultaneously.

Description

lock cylinder

technical field

The utility model relates to the field of locks, in particular to a lock core.

Background technique

The lock cylinder is the main part that controls the opening of the lock. It is the heart of the lock. It refers to the core part that can be rotated with the key and drives the movement of the lock bolt; Cooperate to achieve the purpose of unlocking; this kind of lock cylinder is divided into inner milling tooth lock cylinder and outer milling tooth lock cylinder according to the position of the milling teeth on the key. The key milling teeth of the inner milling tooth lock cylinder are located in the middle of the key. The milling teeth of the outer milling tooth lock cylinder are distributed on both sides of the key, and the milling teeth on the key cooperate with the protrusions on the edge of the key hole of the blade of the lock cylinder, while the milling teeth of the outer milling tooth lock cylinder are distributed on both sides of the key. Whether it is an internal milling tooth lock cylinder or an external milling tooth lock cylinder, the milling teeth on the key are used to control the blades of the lock cylinder to move left and right in the lock cylinder. When the key is fully inserted into the lock cylinder, the V grooves on all the lock cylinder blades are at the same The straight line position allows the lower part of the locking block to enter the V groove, and the locking block is separated from the sleeve, so that the lock cylinder can follow the rotation of the key to achieve the purpose of unlocking; The function of "release by mistake" is insufficient, and there is a high risk of mistaken opening.

Utility model content

The purpose of the utility model is to provide a lock cylinder with better anti-mis-opening and anti-theft performance.

The utility model purpose is achieved in this way.

A lock cylinder, comprising a lock cylinder body, a locking block, a sleeve and lock cylinder blades, the lock cylinder body is installed in the sleeve, the locking block is installed in the lock cylinder body, the upper end of the locking block protrudes from the lock cylinder body and is located in the sleeve In the locking groove of the lock cylinder, the lock core blade includes a blade body and a keyhole formed on the blade body, a V-shaped groove matching with the locking block is formed on the upper end of the blade body, and a spring seat is formed on one side of the lower end of the blade body; the upper end of the keyhole The middle part is formed with a first bump that cooperates with the inner milling teeth of the key, and the upper end of the key hole is formed with a second protrusion that cooperates with the outer milling teeth of the key. The lock cylinder blade is installed in the lock cylinder body.

The utility model can also be further improved by adopting the following technical solutions.

Blade installation holes are arranged on the lock cylinder body, and two lock cylinder blades, one front and one reverse, are installed in each blade installation hole.

A spring hole opposite to the spring seat is also provided below the blade mounting hole, and a first spring is provided between the spring seat and the spring hole, and the first spring makes the lock cylinder blade move toward both ends of the lock cylinder body when the key is not inserted. Move until the outer end of the lock cylinder blade touches the inside of the sleeve.

A second spring is also provided between the locking block and the locking groove. Under the action of the second spring, the upper end of the locking block protrudes from the lock core body and is located in the locking groove of the sleeve.

The utility model works like this.

When the lock cylinder is in the locked state, insert the key, and the inner milling teeth and outer milling teeth on the key cooperate with the first protrusion and the second protrusion of the lock cylinder blade respectively, so that the lock cylinder blade moves left and right in the lock cylinder body, When the key is fully inserted into the lock cylinder, the V grooves on all the lock cylinder blades are in the same linear position, so that the lower part of the locking block can enter the V groove. At this time, the locking block is completely separated from the sleeve, and the lock cylinder body can rotate with the key, so as The purpose of unlocking: if other keys are inserted into the lock cylinder, they will be blocked by the first protrusion and the second protrusion on the blade of the lock cylinder, so that other keys cannot be inserted into the lock cylinder, completely preventing accidental opening Possibility, and the lock core blade is provided with the first projection and the second projection, resulting in more complicated unlocking process, making the difficulty of technical unlocking further improved, reducing the possibility of being technically unlocked.

The beneficial effects of the utility model are as follows.

(1) By changing the structure of the blade of the lock core, the utility model is provided with a first bump and a second bump on the blade of the lock core. The first bump and the second bump need to be aligned with the inner milling teeth and The lock can only be opened with the cooperation of the outer milling teeth, so the anti-mis-opening function of the lock cylinder is greatly improved, and the anti-technical unlocking performance of the lock cylinder is also improved.

Description of drawings

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

Fig. 2 is a schematic diagram of the structure of the blade of the lock cylinder.

Fig. 3 is a schematic diagram of the inner and outer milling teeth of the key.

Detailed ways

Below in conjunction with embodiment and accompanying drawing, the utility model is further described.

The embodiment is described in detail with reference to Figures 1 to 3: a lock cylinder, including a lock cylinder body 1, a locking block 2, a sleeve 3 and a lock cylinder blade 4, the lock cylinder body 1 is installed in the sleeve 3, and the locking block 2 is installed in the lock core body 1, and a second spring 21 is also provided between the locking block 2 and the locking groove 31. Under the action of the second spring 21, the upper end of the locking block 2 protrudes from the lock core body 1 and is located in the sleeve 3, the lock cylinder blade 4 includes a blade body 41 and a key hole 42 formed on the blade body, the upper end of the blade body 41 is formed with a V-shaped groove 43 that is matched with the locking block 2, and the lower end of the blade body 41 is a The side is formed with a spring seat 46; the middle part of the upper end of the key hole 42 is formed with a first protrusion 44 that cooperates with the inner milling teeth 51 of the key, and the upper edge of the key hole 42 is formed with a second protrusion that cooperates with the outer milling teeth 52 of the key 45. Blade installation holes 12 are arranged on the lock core body 1, and two lock core blades 4 are installed in each blade installation hole 12; a spring seat 46 is arranged below the blade installation holes 12. Opposite to the spring hole 11 , a first spring 47 is disposed between the spring seat 46 and the spring hole 11 .

When the lock core was in the non-use state, under the action of the first spring 47, the lock core blades 4 on both sides of the lock core body 1 were separated to the two sides respectively, the lower end of the locking block 2 was positioned on the lock core blade 4, and the locking block 2 The upper end is located in the locking groove 31 of the sleeve 3. At this time, the lock core body 1 cannot rotate in the sleeve 3, and the lock core is in a locked state; insert the key 5, and the inner milling teeth 51 and the outer milling teeth 52 on the key 5 are respectively Cooperate with the first protrusion 44 and the second protrusion 45 of the lock core blade 4 in the lock core, so that the lock core blade 4 moves left and right following the inner milling teeth 51 and the outer milling teeth 52 on the key 5 in the lock core, when the key 5 When the lock cylinder is fully inserted, the V-shaped grooves 43 on all the lock cylinder blades 4 are in a straight line and below the locking block 2, so that the lower part of the locking block 2 can enter the V-shaped groove 43 under the action of the spring 21. At this time, the locking block 2 is completely separated from the sleeve 3, and the lock core body 1 can follow the rotation of the key 5, so as to achieve the purpose of unlocking.

If it is other keys, when inserting the lock cylinder, because other keys do not have the milling tooth that cooperates with the first projection 44 and the second projection 45, will be by the first projection 44 and the second projection on the lock core blade 4. The protrusion 45 is blocked so that it cannot be inserted into the lock cylinder body 1, which completely eliminates the possibility of mis-opening, and the first protrusion 44 and the second protrusion 45 are provided on the lock cylinder blade 4 at the same time, resulting in the unlocking process. It is more complicated, which further increases the difficulty of unlocking with technology and reduces the possibility of being unlocked with technology.

Claims (4)

1. a lock core, comprise plug body, clamping block, sleeve and lock core blade, plug body is arranged in sleeve, clamping block is arranged in plug body, clamping block upper end protrudes from plug body and is positioned at the lock slots of sleeve, it is characterized in that: the keyhole that described lock core blade comprises blade body and formed in blade body, blade body upper end is formed with the V-shaped groove coordinated with clamping block, and side, blade body lower end is formed with spring base; Keyhole upper center is formed with the first projection coordinated with mill teeth in key, and keyhole upper end edge is formed with the second projection coordinated with the outer mill teeth of key, and lock core blades installation is in plug body.

2. lock core according to claim 1, is characterized in that: described plug body is arranged with blades installation hole, is being provided with one just, anti-two pieces of lock core blades in each blades installation hole.

3. lock core according to claim 2, is characterized in that: be also provided with the spring eye corresponding with spring base below described blades installation hole, be provided with the first spring between spring base and spring eye.

4. lock core according to claim 1, is characterized in that: be also provided with the second spring between described clamping block and lock slots.