CN201173007Y - Precision anti-theft lock - Google Patents

Abstract

The utility model provides a precise anti-theft lock, which comprises a lock shell, a lock core and a key, wherein the inner wall of the lock shell is provided with a semicircular groove; one side of the lock core is provided with an offset concave-convex groove-shaped key insertion hole; a plurality of sliding pin holes are arranged in the middle of the concave-convex groove of the key insertion hole, a sliding pin and a sliding pin spring are arranged in each sliding pin hole, a lock pin column hole penetrating through each sliding pin hole is arranged in the corresponding sliding pin hole, a lock pin rod and a lock pin rod spring are arranged in each lock pin column hole, a steel ball hole is arranged beside each lock pin column hole close to the tail end of the lock cylinder, a steel ball spring and a steel ball for positioning are sequentially arranged in each steel ball hole, a buckling ring groove and a buckling ring are arranged at the tail end of the lock cylinder, and; one side of the key is semicircular, the other side of the key is provided with a cutting groove matched with the concave-convex groove-shaped key inserting hole of the lock cylinder, and the surface of the cutting groove of the key is provided with a plurality of concave grooves for accommodating lock pins corresponding to the sliding pin holes of the lock cylinder. The utility model has the advantages of high precision of component matching and good integral anti-theft effect.

Description

Precision anti-theft lock

technical field

The utility model relates to a lock for daily necessities, in particular to a precision anti-theft lock.

Background technique

Lock is an indispensable product in daily life, whether it is a family, an individual or a company, it is necessary to use it to ensure the safety of property. The precision lock of the traditional structure includes an external lock case, an internal lock cylinder and a key that matches the lock cylinder. The lock cylinder fits too much, and the precision is not high. It is easy to open with the same type of key, and has high mutual opening rate and anti-theft Less effective flaws.

Contents of the invention

The purpose of this utility model is to provide a precision anti-theft lock with high matching precision of parts and good anti-theft effect aiming at the defects of the above-mentioned prior art.

In order to achieve the above object, the technical solution adopted by the utility model is: a precision anti-theft lock, which includes an external lock case, an internal lock core and a key matched with the lock core. In order to make the matching precision of the parts high and the anti-theft effect good, the inner wall of the lock case is provided with a semicircular groove. One side of the lock cylinder is provided with an offset concave-convex groove-shaped key hole; a number of sliding pin holes are arranged in the middle of the concave-convex groove of the key hole, and a sliding pin and a sliding pin spring are arranged in the sliding pin hole, and the sliding pin spring is socketed Outside the slide pin; the corresponding slide pin hole is provided with a lock pin post hole passing through the slide pin hole, a lock pin rod and a lock pin rod spring are arranged in the lock pin post hole, and the lock pin rod spring is sleeved outside the lock pin rod; There is a steel ball hole next to the lock pin post hole near the end of the lock cylinder, and a steel ball spring and a steel ball for positioning are arranged in the steel ball hole in turn; a buckle groove and a buckle are arranged at the end of the lock cylinder, and the buckle is inserted into in the buckle groove. One side of the key is semicircular, and the other side is provided with a groove matching the concave-convex groove-shaped key hole of the lock core, and a plurality of dimples for accommodating the lock pin are provided at the key groove surface corresponding to the sliding pin hole of the lock core.

The dimples are of different depths.

When unlocking, the key is inserted into the keyhole of the lock cylinder, and the spring in the sliding pin hole pushes the sliding pin downwards, so that the concave dimples on the key groove correspond to the sliding pins of the sliding pin group. The groove of the sliding pin corresponds to the end face of the lock pin column. In the state of rotation, the tip surface of the lock pin column just inserts into the groove of the slide pin. The pins are displaced in the grooves of the lock housing and no longer bind the lock cylinder, so as to achieve the purpose of opening the lock. When locking, the sliding pin is pushed up by the elastic force of the sliding pin spring, and the end face of the sliding pin is on the inner wall of the lock housing, so that the groove position of the sliding pin is offset from the hole of the locking pin post, and the tail end face of the locking pin post is clamped on the In the groove of the lock case, the lock cylinder cannot be rotated to achieve the locked state.

The beneficial effects of the utility model are: compared with the prior art, the utility model has the advantages of high matching precision of components and good overall anti-theft effect.

Description of drawings

Fig. 1 is a three-dimensional exploded view of the utility model;

Fig. 2 is the assembly drawing of Fig. 1;

Fig. 3 is the A-A, B-B, C-C schematic diagram of the closed state of the utility model;

Fig. 4 is a schematic diagram of D-D, E-E, and F-F of the utility model in an open state.

In the figure: 1 shell, 11 inner wall, 12 semicircular groove, 2 lock cylinder, 21 keyhole, 22 sliding lock hole, 23 lock pin column hole, 24 steel ball hole, 25 buckle groove, 26 buckle ring, 27 convex groove channels, 3 slide pins, 31 slide pin springs, 4 lock pin bars, 41 lock pin bar springs, 5 keys, 51 dimples, 52 key grooves, 6 steel balls, 61 steel ball springs.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

The precision anti-theft lock shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4 includes a lock case 1, a lock cylinder 2 arranged in the lock case, and a key 5 matched with the lock cylinder. As shown in FIG. 1 and FIG. 2 , a semicircular groove 12 is provided on the side of the inner wall 11 of the lock housing 1 . One side of the lock cylinder 2 is provided with a concave-convex keyhole 21, and a plurality of sliding pin holes 22 are arranged in the middle of the concave-convex groove of the keyhole 21 of the lock cylinder. The column hole 23, the side of the lock pin column hole is provided with a positioning steel ball hole 24, and the outer periphery of the end of the lock cylinder is provided with a buckle ring 26 and a buckle ring groove 25.

The sliding pin 3 is located in the sliding pin hole 22 of the lock cylinder 2 and includes the sliding pin 3 and the sliding pin spring 31 . The sliding pin 3 is included in the sliding pin hole 22 of the lock core 2, and one end thereof stretches out of the concave-convex channel 27 of the lock core, and the other end of the sliding pin 3 is offset against the sliding pin spring 31. Lock pin column 4 is located in the lock pin hole 23 of lock core 2, comprises several lock pin columns 4 and lock pin column spring 41, and one side of lock pin column spring 41 is against the lip edge of lock pin hole 23 bottom surfaces, and lock pin column 4. The tip part passes through the inner hole of the lock pin post spring 41 and extends straight to the groove of the slide pin 3. A steel ball spring 61 and steel ball 6 steel balls are arranged in the steel ball hole 24 on the lock pin post hole 23 side. One end of the ball spring 61 is against the bottom surface of the steel ball hole 24 , and the other end supports the steel ball 6 .

One side of the part of the key 5 stretching toward the lock cylinder is semicircular, and the other side is provided with a concave-convex groove 52. A plurality of dimples 51 of different shades corresponding to the sliding pins 3 of the sliding pin group are provided at the sliding pin hole 22 of the lock cylinder.

When assembling, at first the sliding pin holes 22 of the lock core 2 are each loaded with a sliding pin spring 31, then the sliding pin 3 of the sliding pin group is set in the sliding pin hole 22 of the lock core 2, and then inserted against the key hole 21. Key 5; After the lock pin column hole 23 is respectively provided with a lock pin column spring 41, the lock pin column 4 is enclosed within the hole of the lock pin column spring 41; the steel ball spring 61 is located in the steel ball hole 24, on the steel ball The end face of ball spring 61 is installed with a steel ball 6 for positioning; the position of lock pin post 4 is aligned with the semicircular groove 12 of the inner wall of lock case 1, and lock core 2 is included in case 1, and clasp 26 is set at last In the buckle groove 25 at the tail end of the lock cylinder 2 to prevent the assembly from coming out.

During operation, as shown in Fig. 3 and Fig. 4, since the sliding pin 3 and the sliding pin spring 31 of the sliding pin group are assembled in the sliding pin hole 22 of the lock core 2, the locking pin column 4 and the locking pin column spring 41 And steel ball 6, steel ball spring 61 are respectively located in the locking pin column hole 23, the steel ball hole 24 of sliding pin hole 22 left sides. When locking, the sliding pin 3 is pushed up by the elastic force of the sliding pin spring 31, and the end face of the sliding pin 3 is on the inner wall 11 of the lock housing 1, so that the position of the groove of the sliding pin is offset from the locking pin column hole 23, and the locking pin column The end surface of 4 is stuck in the groove 12 of the lock housing so that the lock core 2 cannot rotate, so as to achieve the locked state. When unlocking, the key 5 is inserted into the keyhole 21 of the lock core 2, and the slide pin spring 31 in the slide pin hole 22 pushes the slide pin 3 downward, so that the key groove 52 is provided with dimples 51 of different depths and The sliding pin 3 of the sliding pin group is corresponding, so that the groove of the sliding pin 3 corresponds to the tip surface of the locking pin column 4. In the state of rotation, the tip surface of the locking pin column 4 is just inserted into the groove of the sliding pin 3 , the end surface of the lock pin column 4 that exceeds the circumferential surface of the lock core 2 is brought into the hole, and the lock pin column 4 and the steel ball 6 are simultaneously displaced in the groove 12 of the lock housing and no longer form a clamp on the lock core, so as to achieve The purpose of opening the lock. Because the sliding pin group corresponds to the recess of the key, the groove of the sliding pin is closely matched with the tip of the lock pin post, so that the lock cylinder has an anti-theft effect.

Therefore, the utility model has the advantages of high matching precision of components and good overall anti-theft effect.

The above-mentioned embodiment is only a kind of preferred embodiment of the utility model, and the usual changes and replacements carried out by those skilled in the art within the scope of the technical solutions of the utility model should be included in the protection scope of the utility model Inside.

Claims (2)

1. A precision anti-theft lock, comprising an external lock casing, an internal lock cylinder and a key matched with the lock cylinder, characterized in that: The inner wall of the lock case is provided with a semicircular groove; One side of the lock cylinder is provided with an offset concave-convex groove-shaped key hole; a number of sliding pin holes are arranged in the middle of the concave-convex groove of the key hole, and a sliding pin and a sliding pin spring are arranged in the sliding pin hole, and the sliding pin spring is socketed Outside the slide pin; the corresponding slide pin hole is provided with a lock pin post hole passing through the slide pin hole, a lock pin rod and a lock pin rod spring are arranged in the lock pin post hole, and the lock pin rod spring is sleeved outside the lock pin rod; There is a steel ball hole next to the lock pin post hole near the end of the lock cylinder, and a steel ball spring and a steel ball for positioning are arranged in the steel ball hole in turn; a buckle groove and a buckle are arranged at the end of the lock cylinder, and the buckle is inserted into in the buckle groove; One side of the key is semicircular, and the other side is provided with a groove matching the concave-convex groove-shaped key hole of the lock core, and a plurality of dimples for accommodating the lock pin are provided at the key groove surface corresponding to the sliding pin hole of the lock core. 2. The precision anti-theft lock according to claim 1, wherein the dimples are of different depths.