A lock core

Abstract

The present invention provides a lock core, specifically relates to the field of locks, including a lock core and a key; a key hole is provided at the end of the lock core, a first pin hole and a second pin hole are provided at the upper end and the side of the lock core respectively; a first pin and a second pin are provided in the first pin hole and the second pin hole respectively; a plurality of first pin grooves and second pin grooves matching the first pin and the second pin are provided at the upper end face and the side of the key respectively; the first pin groove is a strip-shaped groove when viewed from above, and the second pin groove is a circular groove when viewed from above; one end of the first pin is wedge-shaped, and the end of the second pin is conical; semicircular snap rings are symmetrically provided on both sides of the lock core, and a limiting groove is provided at the other end of the first pin, and the end of the snap ring can be embedded in the limiting groove when the lock core rotates. The present invention can improve the anti-theft security of the lock core.

Description

Technical Field

[0001] The invention belongs to the field of locks, and in particular relates to a lock core. Background Art

[0002] The main function of the lock core is to transmit torque from the head, thereby driving other parts of the lock to achieve unlocking and locking. The lock core head structures of padlocks, drawer locks, door locks and bicycle locks are different, and the ways of transmitting torque are also different, but the functions are the same; the rotation of the existing lock core is generally achieved by inserting the key into the lock hole, so that the pin reaches the specified position, and the key is twisted to twist the lock core to open it, but the existing lock core pins are relatively single, and its anti-theft security still needs to be further improved; in view of the shortcomings of the existing technology, a lock core is needed to improve the anti-theft security of the lock core. Summary of the invention

[0003] The purpose of the present invention is to provide a lock core which can improve the anti-theft safety of the lock core.

[0004] The present invention provides the following technical solutions:

[0005] A lock core, comprising a lock core and a key; a key hole is provided at the end of the lock core, a first pin hole and a second pin hole are provided at the upper end and the side of the lock core respectively; a first pin and a second pin are provided in the first pin hole and the second pin hole respectively;

[0006] The upper end surface and the side portion of the key are respectively provided with a plurality of first pin grooves and second pin grooves matching the first pin and the second pin; the first pin groove is a strip-shaped groove when viewed from above, and the second pin groove is a circular groove when viewed from above; one end of the first pin is wedge-shaped, and the end of the second pin is conical;

[0007] Semicircular snap rings are symmetrically arranged on both sides of the lock core, and a limiting groove is arranged at the other end of the first pin. When the lock core rotates, the end of the snap ring can be embedded in the limiting groove.

[0008] Preferably, the cross section of the first pin is an inverted convex structure, the limiting groove is arranged on the larger end face of the first pin, and the wedge-shaped structure is arranged on the smaller end face of the first pin.

[0009] Preferably, the first pin grooves are arranged non-parallel to each other, that is, the angles between the first pin grooves are different from each other.

[0010] Preferably, the lock core is provided with a card slot on both sides, and the upper end of the card slot is connected with the first pin hole; the snap ring is embedded in the card slot, and the outer side of the snap ring is provided with a lug for fixing, that is, when the lock core rotates, the lug is fixed and the snap ring is in a stationary state;

[0011] Preferably, the slot is provided between two adjacent second pin holes;

[0012] Preferably, a plurality of first pin grooves are provided on both upper and lower end surfaces of the key, and a plurality of second pin grooves are provided on both sides of the key.

[0013] Beneficial effects of the present invention:

[0014] The upper end surface and side portion of the key of the present invention are respectively provided with a plurality of first pin grooves and second pin grooves matching with the first pin and the second pin; the first pin groove is a strip-shaped groove when viewed from above, and the second pin groove is a circular groove when viewed from above; one end of the first pin is wedge-shaped, and the end of the second pin is conical; semicircular retaining rings are symmetrically provided on both sides of the lock core, and a limiting groove is provided at the other end of the first pin. When the lock core rotates, the end of the retaining ring can be embedded in the limiting groove. By arranging two different pins and pin grooves, the anti-theft safety performance can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is the lock core structure diagram;

[0017] Figure 2 It is a key structure;

[0018] Figure 3 It is the structure diagram of the clamp ring;

[0019] Figure 4 is the first marble structure diagram;

[0020] Figure 5 is the second marble structure diagram;

[0021] The markings in the figure are: 1. lock core; 11. first pin hole; 12. second pin hole; 13. slot; 2. key; 21. first pin slot; 22. second pin slot; 3. snap ring; 4. first pin; 5. second pin. DETAILED DESCRIPTION

[0022] See also Figures 1 to 5, a lock core comprises a lock core 1 and a key 2; a key hole is provided at the end of the lock core 1, and a first pin hole 11 and a second pin hole 12 are respectively provided at the upper end and the side of the lock core 1; a first pin 4 and a second pin 5 are respectively provided in the first pin hole 11 and the second pin hole 12; a plurality of first pin grooves 21 and a second pin groove 22 matching the first pin 4 and the second pin 5 are respectively provided on the upper end surface and the side of the key 1; the first pin groove 21 is a strip-shaped groove when viewed from above, and the second pin groove 22 is a circular groove when viewed from above; one end of the first pin 4 is wedge-shaped, and the end of the first pin 5 is conical; semicircular snap rings 3 are symmetrically provided on both sides of the lock core 1, and a limiting groove is provided at the other end of the first pin 4, and the end of the snap ring 3 can be embedded in the limiting groove when the lock core 1 rotates; by setting two different pins and pin grooves, the anti-theft security performance can be greatly improved. The cross section of the first pin 4 is an inverted convex structure, the limit groove is arranged on the larger end face of the first pin 4, and the wedge-shaped structure is arranged on the smaller end face of the first pin 4; in this way, the smooth movement of the first pin 4 can be ensured; the first pin grooves 21 are arranged non-parallel, that is, the angles between the first pin grooves 21 are different, which can improve the anti-theft security; the two sides of the lock cylinder 1 are provided with card slots 13, and the upper ends of the card slots 13 are connected with the first pin hole 11; the snap ring 3 is embedded in the card slot 13, and the outer side of the snap ring 3 is provided with a lug for fixing, that is, when the lock cylinder 1 rotates, the lug is fixed, and the snap ring 3 is in a static state; in this way, it is easy to open; the card slot 13 is arranged between two adjacent second pin holes 12, so that the design layout is reasonable; the upper and lower end faces of the key 1 are provided with a plurality of first pin grooves 21, and the two sides of the key 2 are provided with a plurality of second pin grooves 22, which can further improve the anti-theft security, and the key 1 does not need to distinguish between the front and back when inserted into the keyhole;

[0023] The working mode of the present invention is:

[0024] like Figures 1 to 5 As shown, the upper end surface and side of the key 1 are respectively provided with a plurality of first pin grooves 21 and second pin grooves 22 matching the first pin 4 and the second pin 5; the first pin groove 21 is a strip-shaped groove when viewed from above, and the second pin groove 22 is a circular groove when viewed from above; one end of the first pin 4 is wedge-shaped, and the end of the first pin 5 is conical; semicircular snap rings 3 are symmetrically provided on both sides of the lock cylinder 1, and a limiting groove is provided at the other end of the first pin 4, and the end of the snap ring 3 can be embedded in the limiting groove when the lock cylinder 1 rotates; by providing two different pins and pin grooves, the anti-theft safety performance can be greatly improved;

[0025] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lock core, characterized in that: It comprises a lock core and a key; the end of the lock core is provided with a key hole, the upper end and the side of the lock core are respectively provided with a first pin hole and a second pin hole; the first pin hole and the second pin hole are respectively provided with a first pin and a second pin; The upper end surface and the side portion of the key are respectively provided with a plurality of first pin grooves and second pin grooves matching the first pin and the second pin; the first pin groove is a strip-shaped groove when viewed from above, and the second pin groove is a circular groove when viewed from above; one end of the first pin is wedge-shaped, and the end of the second pin is conical; Semicircular snap rings are symmetrically arranged on both sides of the lock core, and a limiting groove is arranged at the other end of the first pin, and the end of the snap ring can be embedded in the limiting groove when the lock core rotates; The cross section of the first pin is an inverted convex structure, the limiting groove is arranged on the larger end surface of the first pin, and the wedge-shaped structure is arranged on the smaller end surface of the first pin; The first pin grooves are arranged non-parallel to each other, that is, the angles between the first pin grooves are different from each other; The lock core is provided with a clamping groove on both sides, and the upper end of the clamping groove is connected with the first pin hole; the clamping ring is embedded in the clamping groove, and the outer side of the clamping ring is provided with a lug for fixing, that is, when the lock core rotates, the lug is fixed and the clamping ring is in a stationary state; The card slot is arranged between two adjacent second pin holes; The upper and lower end surfaces of the key are both provided with a plurality of first pin grooves, and the two sides of the key are both provided with a plurality of second pin grooves.

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