CN207406140U - Blade lockset - Google Patents

Abstract

A blade lock, in which two inner milling teeth are respectively arranged on the front and back of the part where the key is inserted into the lock cylinder, and the two sides of the key insertion part of the lock cylinder are respectively provided with profiling teeth parallel to the two inner milling teeth, An unlocking labyrinth of equal width is formed between the inner milling tooth and the adjacent profiling tooth; the lock cylinder is inserted with a class A blade that matches the unlocking labyrinth, and the top of the class A blade is provided with a V-shaped boss that matches the lock bolt The V-shaped groove, the middle part of the class A blade is provided with a square through hole for the key to pass through, and the upper wall of the square through hole is provided with a matching limit. The second protrusion on the top, a square notch adapted to the unlocking labyrinth is formed between the first protrusion and the second protrusion. The utility model provides a blade lock. The key adopts a profiling structure to form an equal-width unlocking labyrinth matching the square notch of the blade, which plays a better role in limiting the blade and reduces the interaction between keys of different codes. The probability of opening improves the anti-theft performance of the lock.

Description

Blade lock

technical field

The utility model belongs to the technical field of locks, in particular to a blade lock.

Background technique

The high mutual opening rate of locks is an important factor affecting the hidden danger of anti-theft safety. In addition to the confusion of the manufacturer's code, this problem can also arise from the matching structure of the lock's key teeth and blades, especially in the double-blade lock cylinder structure. , because the groove on the blade that matches the lock bolt is V-shaped, in addition, there are matching gaps between the blade and the blade groove, between the lock cylinder and the lock body, and between the lock bolt and the lock bolt groove, resulting in different Two locks with one, two or three levels of discrepancy, as long as the discrepancies of two or three levels do not occur on the same position of the key, they can be opened mutually. Theoretically, the amount of encryption is very large. However, in the actual production process, the mutual opening rate of products is very high, which cannot meet the requirements of national standards.

Utility model content

The purpose of this utility model is to provide a blade lock. The tooth pattern on the key adopts a profiling structure to form an equal-width unlocking labyrinth matching the square notch set on the blade, which has a better position-limiting effect on the blade. , reducing the probability of keys with different codes opening each other, and improving the anti-theft performance of the lock.

The purpose of this utility model is achieved as follows: a blade lock, including a key and a corresponding lock core, the front and back of the key inserted into the lock core are respectively provided with two internal milling teeth, and the key is inserted into the lock core. The two sides are respectively provided with profiling corkscrews parallel to the two internal milling corkscrews, and an equal-width unlocking labyrinth is formed between the internal milling corsages and the adjacent profiling corsages; the lock cylinder is inserted with There are A-type blades matching the unlocking labyrinth. The top of the A-type blade is provided with a V-shaped groove that matches the V-shaped boss of the lock bolt. The middle part of the A-type blade has a square through hole for the key to pass through. The protrusion is provided with a first protrusion that cooperates with the limit on the internal milling tooth flower and a second protrusion that cooperates with the limit on the profiling tooth flower. Fitted square notch.

By adopting the above technical solution, after inserting keys with different codes, the square notch of the blade is limited on the equal-width unlocking labyrinth, and the lateral displacement is not easy to cause the V-shaped groove on the blade to shift, which better guarantees the security of the key. One-to-one with the lock cylinder.

Preferably, the two sides where the key is inserted into the lock core are provided with external milling teeth, and the external milling teeth are located between the front and back profiling teeth, and the lock core is inserted with a matching external milling tooth Type B blades, the top of the B type blades is provided with a V-shaped groove matching the lock bolt, the middle part of the B type blades is opened with a square through hole for the key to pass through, the side wall of the square through hole is provided with a third protrusion, and the third protrusion Compatible with the external milling of the key.

By adopting the above-mentioned technical solution, the external milling teeth increase the complexity of the straight key and further reduce the probability of mutual opening.

Preferably, the lock core is axially provided with a key hole and blade grooves perpendicular to the key hole, the blade grooves are distributed along the axial direction of the lock core at intervals, and communicate with the lock bolt groove on the lock core, and the lock bolt fits on the lock bolt in the slot.

Preferably, the A-type blades are arranged in pairs in the same blade groove, and two A-type blades arranged in pairs share one leaf spring.

Preferably, the A-type blades and the B-type blades are set in the same blade groove as a group.

Description of drawings

Fig. 1 is an exploded view of the overall structure of the utility model;

Fig. 2 is a perspective view of the utility model key;

Fig. 3 is the plane view of the utility model key;

Fig. 4 is the sectional view of A-A direction in Fig. 3;

Fig. 5 is a structural diagram of a class A blade;

Fig. 6 is a structural diagram of a class B blade;

Fig. 7 is a sectional view of the utility model;

Fig. 8 is the sectional view of B-B direction in Fig. 7;

Fig. 9 is a sectional view along C-C direction in Fig. 7 .

Reference signs: 1, key; 1a, inner milling teeth; 1b, profiled teeth; 1c, outer milling teeth; 2, lock cylinder; 2a, key hole; 2b, lock bolt groove; 2c, blade groove; 3. Lock bolt; 3a, V-shaped boss; 4. Lock body; 4a, center hole; 4b, locking groove; Blade; 9a, third protrusion; 10, class A blade; 10a, first protrusion; 10b, second protrusion; 10c, square notch; 11, leaf spring; 12, unlocking labyrinth; 13, V shape Groove; 14, square through hole; 15, support end.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings with specific embodiments, referring to Fig. 1-9:

A blade lock, comprising a key 1 and a corresponding lock core 2, the lock core 2 is rotatably arranged in the central hole 4a of the lock body 4, the lock core 2 is provided with a key hole 2a along its axial direction, and the lock core 2 is A plurality of blade grooves 2c are provided in the radial direction, and the blade grooves 2c are distributed at intervals along the axial direction of the lock core 2. The blade grooves 2c communicate with the key hole 2a, and the lock core 2 is provided with a lock bolt groove 2b on the upper side of the blade grooves 2c. , the lock bolt groove 2b is connected with the blade groove 2c, the lock bolt 3 is arranged in the lock bolt groove 2b, the lock groove 4b is arranged on the wall of the central hole 4a of the lock body 4, and the lock groove 4b is connected with the lock bolt groove on the lock core 2 4b corresponds to and is aligned with each other. A blade is arranged in the blade groove 2c of the lock cylinder 2. A V-shaped groove 13 matching the V-shaped boss 3a of the lock bolt 3 is arranged on the top of the blade. The V-shaped concave groove 13 on the blade The groove 13 is provided with different tooth pattern codes. The V-shaped grooves 13 set on the different tooth pattern numbers have different positions on the blades. The key 1 is inserted into the lock cylinder 2. There are inner milling tooth patterns 1a and outer milling tooth patterns 1c. , the inner milling tooth flower 1a and the outer milling tooth flower 1c correspond to the number of the blade tooth flower arranged on the lock cylinder 2, the key 1 is inserted into the key hole 2a, and the inner milling tooth flower 1a and the outer milling tooth flower 1c of the key 1 connect the blade Accurate positioning, so that the V-shaped groove 13 provided on each blade is aligned with the lock bolt groove 2b of the lock cylinder 2, and the V-shaped boss 3a at the lower end of the lock bolt 3 falls into the blade under the action of the lock bolt spring 6 The V-shaped groove 13 provided on the top, the upper end of the lock bolt 3 breaks away from the lock groove 4b provided on the lock body 4, and enters the lock bolt groove 2b provided on the lock cylinder 2. At this time, the lock cylinder 2 is rotatable relative to the lock body 4 , the lock can be opened, the key 1 is pulled out, and the blade moves toward the outer diameter of the lock cylinder 4 under the action of the blade spring 11, so that the V-shaped groove 13 provided on the blade deviates from the lock bolt groove 2b provided on the lock cylinder 2, Under the action of the V-shaped groove 13 of the blade, the lock bolt 3 moves in a direction away from the center of the lock core 2, and its upper end enters the locking groove 4b provided on the lock body 4. At this time, the lock core 2 is relatively locked against the lock body 4. It cannot be turned, and the lock cannot be opened.

Two different locks have only one level of discrepancy on the same disc position of the key 1. In this case, the V-shaped boss 3a at the lower end of the lock bolt 3 does not break away from the V-shaped groove on the blade. 13. The V-shaped boss 3a presses against the inclined surface of the V-shaped groove 13 of the blade, and the lock bolt spring 6 may overcome the pressure of the blade spring 11, so that the lock bolt 3 completely enters the lock bolt groove 2b, thereby causing mutual release.

Combining Fig. 1 and Fig. 5 and Fig. 6, it can be seen that the blades are divided into two types: A-type blades 10 and B-type blades 9, the same type of blades or two blades of different types fit in the same blade groove 2c; two blades of the same blade groove 2c The lower end of block blade is all provided with the supporting end 15 that protrudes, and the supporting end 15 of two blades is positioned at left and right sides, and leaf spring 11 is installed between supporting end 15, provides radial elastic force for two blades of same blade slot.

Referring specifically to Fig. 5, the upper side wall of the square through hole 14 of the class A blade 10 is provided with a first protrusion 10a and a second protrusion 10b, and a square notch is formed between the first protrusion 10a and the second protrusion 10b. 10c; the structure of the key 1 matched with the A-type blade 10 is shown in Figures 2, 3, and 4. The front and back of the key 1 inserted into the lock core 2 are respectively provided with two internal milling flowers 1a, and the key 1 is inserted into the lock core. The two sides of part 2 are respectively provided with profiling teeth 1b roughly parallel to the two inner milling teeth 1a, and an equal-width unlocking labyrinth is formed between the inner milling teeth 1a and the adjacent profiling teeth 1b 12. The unlocking labyrinth 12 fits in the square notch 10c, the class A blade 10 is under the elastic force of the blade spring 11 during the movement, and its first protrusion 10a fits the tooth surface of the inner milling tooth 1a, the second The cooperation between the two protrusions 10b and the profiling tooth 1b only retains a little gap. With such a structural fit, the left and right movement of the class A blade 10 in the blade groove 2c is completely controlled by the internal milling 1a of the key 1 and the profiling 1b. Simultaneously, it solves the problem that different locks have slightly different tooth patterns, and the lock bolt spring 6 overcomes the pressure of the leaf spring 11 to open each other.

Referring specifically to FIG. 6 , the difference between the B-type blade 9 and the A-type blade 10 is that the raised portion is arranged on the side wall of the square through hole 14 to form a third protrusion 9a. The structure corresponding to the B-type blade 9 on the key 1 can be seen in Figure 3 and Figure 4 in detail. The two sides of the key 1 inserted into the lock cylinder 2 are provided with external milling teeth 1c, and the external milling teeth 1c are located on the front of the key 1. Between the tooth pattern 1b and the profiled tooth pattern 1b on the back; the external milling tooth pattern 1c increases the complexity of the straight key 1 and further reduces the probability of mutual opening.

The foregoing embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Therefore: all equivalent changes made according to the structure, shape, and principle of the present utility model should be covered by this utility model. within the scope of protection of utility models.

Claims (5)

1. A blade lock, comprising a key (1) and a corresponding lock cylinder (2), characterized in that two internal milling teeth are respectively arranged on the front and back of the part where the key (1) is inserted into the lock cylinder (2) Flower (1a), key (1) is inserted into the two sides of the lock cylinder (2) to be respectively provided with imitation tooth flower (1b) parallel to two inner milling tooth flower (1a), inner milling tooth flower (1a) An equal-width unlocking labyrinth (12) is formed between the adjacent profiling tooth flower (1b); the lock cylinder (2) is inserted with a class A blade (10) matching the unlocking labyrinth (12) The top of the A-type blade (10) is provided with a V-shaped groove (13) matching the V-shaped boss (3a) at the bottom of the lock bolt (3), and the middle part of the A-type blade (10) is provided with a hole for the key (1) to pass through. The square through hole (14), the upper wall of the square through hole (14) is convexly provided with the first protrusion (10a) on the internal milling tooth flower (1a) and the first protrusion (10a) on the profiling tooth flower (1b). Two protrusions (10b), a square notch (10c) matching the unlocking labyrinth (12) is formed between the first protrusion (10a) and the second protrusion (10b). 2. The blade lock according to claim 1, characterized in that: the two sides of the part where the key (1) is inserted into the lock cylinder (2) are provided with external milling teeth (1c), and the external milling teeth (1c) Located between the front profiling chip (1b) and the back profiling chip (1b) of the key (1), the lock cylinder (2) is inserted with a B-type blade that matches the external milling chip (1c) (9), the top of the B-type blade (9) is provided with a V-shaped groove (13) matching the lock bolt (3), and the middle part of the B-type blade (9) is provided with a square through hole (14) for the key (1) to pass through. The side wall of the square through hole (14) is provided with a third protrusion (9a), and the third protrusion (9a) cooperates with the external milling thread (1c) of the key. 3. The blade lock according to claim 2, characterized in that: the lock cylinder (2) is axially provided with a keyhole (2a) and a blade groove (2c) perpendicular to the keyhole (2a), the blade groove (2c) They are distributed at intervals along the axial direction of the lock cylinder and communicate with the lock bolt groove (2b) on the lock cylinder (2), and the lock bolt (3) fits in the lock bolt groove (2b). 4. The blade lock according to claim 3, characterized in that: the A-type blades (10) are arranged in pairs in the same blade groove (2c), and two A-type blades (10) in pairs share one leaf spring (11). 5. The blade lock according to claim 3, characterized in that: A-type blades (10) and B-type blades (9) are set in the same blade groove as a group.