CN202467358U - Improved blade lock - Google Patents

Abstract

A blade lock head, the lock head comprises a lock shell and a lock core, a blade is arranged in the lock core, a positioning protrusion is arranged on the blade, and a positioning groove is correspondingly arranged in the lock shell. The blade of the blade lock head of the utility model adopts a sliding control method, and the combination of the locking groove and the pushing protrusion at different positions on the blade enables the combination of multiple sets of blades to match a variety of unlocking positions, thereby improving the anti-pry performance and making the lock safe to use.

Description

An Improved Blade Lock

Technical field:

The utility model belongs to the field of locks, and in particular relates to an improved blade lock head.

Background technique:

Existing blade lock head, it is made up of many blades, is arranged in the lock cylinder, and a part of blade goes beyond the lock cylinder and enters in the lock head shell, and the lockset is closed state. When the key is inserted, the protruding parts of the blades will all enter, so that the blades will retract and the lock will be in an open state. When this structure uses the unlocking tool to move repeatedly in the lock hole, the blade can be retracted into the lock cylinder, thereby opening the lock. The anti-theft performance of this kind of lockset is poor. Another example is Chinese patent 201120042051.2, which adopts the lock core structure of blades, but its lock core can still be fiddled and rotated by external tools when no key is inserted, so the performance of the lockset to prevent technical unlocking is relatively low.

Invention content:

Aiming at the defects existing in the prior art, the purpose of this utility model is to provide a device which can overcome the above defects and avoid the repeated movement of the unlocking tool to open the lock.

The technical scheme adopted by the utility model to solve the technical problem is: an improved blade lock head, the lock head includes a lock shell and a lock cylinder, a blade is arranged in the lock cylinder, and the center of the lock cylinder A key hole is provided, the key is that the lock cylinder is provided with a plurality of blade grooves laterally, the blades are placed in the blade grooves, the center of the blades is provided with an inner hole adapted to the shape of the key, and the blades The inner wall of the inner hole is provided with a push protrusion, the outer wall of the blade is provided with a locking groove, the axial direction of the lock cylinder is provided with a locking rod groove, and a locking rod can be placed in the locking rod groove, The inner wall of the lock housing is provided with a locking groove, and the lower end of the blade is provided with a spring protrusion for connecting with a spring. The blade is provided with a positioning protrusion, and correspondingly, a positioning groove is provided on the lock housing.

A false tooth position is arranged beside the locking groove on the blade.

The blade grooves are left and right grooves, each of the blade grooves is provided with two blades, the blades are arranged in opposite directions, and the pushing protrusions are arranged on the top of the inner hole wall of the blades. On the surface, the locking groove is arranged at the top of the blade groove, and is correspondingly arranged at the upper part of the pushing protrusion.

A jacking spring is arranged in the locking groove, which is used to push the locking bar into the lock cylinder, so that the lock cylinder in the lock housing cannot be rotated.

There are five blade grooves arranged laterally on the lock cylinder.

The setting points of the pushing protrusions on multiple blades in the same direction in the lock cylinder are not at the same position

The blade of the blade lock head of the utility model adopts a sliding control method, and the combination of the locking groove on the blade and the different positions of the pushing protrusion enables the combination of multiple groups of blades to match various unlocking positions. Positionable protrusions are set on the blades of the lock cylinder, and the positioning groove on the lock barrel can realize that the lock cylinder cannot be turned under the condition of an inaccurate key. It has good pick-proof performance and makes the lock safe to use.

Description of drawings:

Fig. 1 is a schematic diagram of the combined state structure of the utility model.

Fig. 2 is a schematic diagram of the combined state of the blades of the present invention.

Fig. 3 is a schematic diagram of the blade structure of the cylinder lock stage of the utility model.

Fig. 4 is a structural schematic diagram of the lock case of the present invention.

Detailed ways:

As shown in Figures 1 to 4, an improved blade lock head, the lock head includes a lock shell 1 and a lock cylinder 2, a blade 21 is arranged in the lock cylinder, and a blade 21 is arranged in the center of the lock cylinder The key hole 22, the lock cylinder is provided with a plurality of blade grooves 23 laterally, the blades 21 are placed in the blade grooves 23, and the center of the blades 21 is provided with an inner hole 211 adapted to the shape of the key. The inner hole wall of the blade 21 is provided with a push protrusion 212, and a locking groove 213 is arranged on the outer wall of the blade 21, and a locking rod groove 24 is arranged in the axial direction of the described lock cylinder, and the described locking rod groove A locking rod 3 can be placed in 24, the inner wall of the lock housing 1 is provided with a locking groove 11, and a spring protrusion 214 is provided at the lower end of the blade, and the spring protrusion is used to connect with a spring 25. The push protrusion 212 can be arranged at any position on the upper end of the inner wall of the blade. Preferably, the upper end of the inner wall of the blade can be divided into multiple positions, such as four or five or six positions. From the top of 212, it is convenient for key configuration. A fixing hole (not shown in the figure) can also be arranged on the lock housing 1, and the lock can be fixed through the fixing hole. The keyhole 22 can be provided with a circle or a square shape, and the shape of the key 4 is also provided correspondingly. When the correct key 4 is inserted, the groove on the key pushes the protrusion 212, thereby driving the blade 21 to move left or right, when multiple locking grooves 213 move to the bottom of the locking bar groove 24 to form a straight line , the locking rod 3 can be plunged into the locking rod groove 24, so that the lock housing 1 and the lock cylinder 2 can rotate relatively, and the lockset becomes an open state. The lower end of the blade 21 is provided with a spring protrusion 214 , one end of the spring protrusion 214 is connected to the spring 25 , and the other end is buckled and connected to the cylinder 2 . The blade 21 may be drum-shaped. A positioning protrusion 215 is provided on the blade, and a positioning groove 13 is correspondingly provided on the lock housing 1 . The positioning protrusion 215 can be buckled in the positioning groove 13, so that the blade cannot be pushed out of the positioning groove 13 without the correct key, and better anti-theft performance is achieved.

There is a false tooth position 216 next to the locking groove 213 on the blade 21. The false tooth position 216 can give the thief or the technical unlocking personnel an illusion that this is the tooth position for opening the lock head, and, in different The blades can be provided with grooves of different heights, further increasing the possibility of preventing technical unlocking.

The blade grooves 23 are left and right grooves, and each of the blade grooves 23 is provided with two blades 21, the blades 21 are arranged in opposite directions, and the pushing protrusions 212 are arranged in the blades. On the top surface of the hole wall, the locking groove 213 is arranged at the top of the blade groove, and is correspondingly arranged on the upper part of the pushing protrusion 212 . Paired blades are arranged in the blade groove so that when the key is inserted, both sides of the key groove can play the role of pushing the blades, which further increases the difficulty of opening the lock and increases the combination, decryption and matching mode of the lock.

The locking groove 11 is provided with a jacking spring 12 for pushing the locking rod 3 into the lock cylinder so that the lock cylinder in the lock housing cannot be rotated. When the key is inserted, the lock bar 3 can be quickly plunged into the lock cylinder 2 .

There are four to six blade grooves arranged laterally on the lock cylinder.

The setting points of the push protrusions on the multiple blades in the same direction in the lock cylinder are not at the same position, and each locking groove 213 is arranged on the upper end of the push protrusions, and the push protrusions can also be set at the same position. The locking slots 213 are arranged in different positions.

Claims (6)

1. An improved blade lock head, the lock head includes a lock housing (1) and a lock cylinder (2), a blade (21) is arranged in the lock cylinder, and a key is arranged in the center of the lock cylinder The hole (22) is characterized in that a plurality of blade grooves (23) are arranged laterally on the lock cylinder, the blades (21) are placed in the blade grooves (23), and the center of the blades (21) An inner hole (211) adapted to the shape of the key is provided, a pushing protrusion (212) is arranged on the inner hole wall of the blade (21), and a locking groove (213) is arranged on the outer wall of the blade (21) , the axial direction of the lock cylinder is provided with a locking rod groove (24), a locking rod (3) can be placed in the described locking rod groove (24), and the inner wall of the lock housing (1) is provided with a locking groove ( 11), the lower end of the blade is provided with a spring protrusion (214), the spring protrusion is used to connect with the spring (25), and the blade is provided with a positioning protrusion (215), which is correspondingly provided on the lock housing (1) There are positioning slots (13). 2. The improved blade lock head according to claim 1, characterized in that a false tooth position (216) is provided beside the locking groove (213) on the blade (21). 3. The improved blade lock head according to claim 1, characterized in that the blade groove (23) is a left-right connected groove, and each blade groove (23) is provided with two blades (21 ), the blades (21) are arranged in opposite directions, the pushing protrusions (212) are arranged on the top surface of the inner hole wall of the blades, and the locking grooves (213) are arranged on the top of the blade grooves, And it is correspondingly arranged on the upper part of the pushing protrusion (212). 4. The improved blade lock head according to claim 1, characterized in that a jacking spring (12) is provided in the locking groove (11) for pushing the locking bar into the lock cylinder to make the lock The lock cylinder in the shell cannot be rotated. 5. The improved blade lock head according to claim 1, characterized in that the number of blade grooves arranged laterally on the lock cylinder is four to six. the 6. The improved blade lock head according to claim 1, characterized in that the setting points of the pushing protrusions on multiple blades in the same direction in the lock cylinder are not at the same position. the

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