Drawer lock

Abstract

The utility model belongs to the technical field of locks, and particularly discloses a drawer lock which comprises a lock base, a lock cylinder seat, a lock cylinder and a spring bolt, the lock cylinder seat is arranged in the lock base, a plurality of first reinforcing ribs are arranged on the inner surface of the lock base, and a clamping groove is formed in the side, facing the inner surface of the lock base, of the lock cylinder seat. The lock cylinder base is provided with a clamping groove, so that the lock cylinder base can be clamped to the first reinforcing rib on the inner side of the lock base through the clamping groove, a limiting block is arranged at the bottom end of the lock cylinder base, and the bottom face of the limiting block abuts against the inner side face of the lock base. Therefore, the lock cylinder seat can be clamped and fixed, the situation that the lock cylinder seat deviates due to long-time use is avoided, meanwhile, a limiting block arranged at the bottom end of the lock cylinder seat is matched, one end of the lock cylinder seat can be limited, and the situation that the lock cylinder seat deviates can be further avoided; therefore, normal locking and unlocking operation of the drawer lock is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of locks, in particular to a drawer lock. Background Art

[0002] The documents placed inside the drawer are relatively important and it is inconvenient for others to view them at will, so it is necessary to install a drawer lock in the drawer so that the drawer can be locked. For example, Chinese patent CN202022137767.2 discloses a drawer lock, including a lock bottom, a lock tongue, an inner lock passage, an outer lock passage, a lock panel and a lock core, the interior of the lock core is correspondingly provided with a lock blade and a lock tail piece, the mounting end of the lock blade is elastically mounted with the lock core through a leaf spring and a steel ball, and the outer wall of the lock core is integrally provided with a fixed point in a convex structure; corresponding fixed points on opposite sides of the inner lock passage are provided with concave stop points, a fixed connection point is provided at the end of the lock core, the lock core is arranged inside the inner lock passage, and the end of the lock core is connected to the mounting end of the lock tongue through the fixed connection point, the outer lock passage is fixedly mounted on the outside of the inner lock passage, the lock panel is mounted on the outside of the inner lock passage, and the outer lock passage and the inner lock passage are fixedly arranged.

[0003] When assembling the lock inner passage, the lock inner passage is mainly placed on the inner surface of the lock bottom, and then the surface of the lock bottom is covered by the lock panel to fix the lock inner passage inside the lock bottom. However, with this assembly method, the lock inner passage inside the lock bottom is mainly pressed and fixed by the clamping force of the lock panel. After the lock is used for a long time, the lock panel will become loose, which will cause the lock panel and the lock bottom to not fit tightly, which will cause the lock inner passage inside the lock bottom to move out of place, and thus cause the lock gall and lock tongue installed inside the lock inner passage to move out of place, which will cause the drawer lock to be unable to achieve normal locking and unlocking operations, affecting the normal use of the drawer lock. Utility Model Content

[0004] In order to overcome the defects of the prior art, the utility model provides a drawer lock.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a drawer lock, comprising a lock base, a lock core seat, a lock core and a lock tongue, a lock core seat is arranged inside the lock base, a plurality of first reinforcing ribs are arranged on the inner surface of the lock base, a clamping groove is opened on the side of the lock core seat facing the inner surface of the lock base, so that the lock core seat can be clamped at the first reinforcing rib on the inner side of the lock base through the clamping groove, a limiting block is arranged at the bottom end of the lock core seat, the bottom surface of the limiting block abuts against the inner side surface of the lock base, a lock core is rotatably arranged inside the lock core seat, a lock tongue is arranged on one end of the lock core close to the lock base, an opening is arranged at one end of the lock base, and one end of the lock tongue faces the opening.

[0006] Further description of the present scheme: limiting bosses are provided at both ends of each of the first reinforcing ribs, a limiting portion is provided on the side of the limiting boss close to the lock core seat, a side of the limiting portion away from the limiting boss is in contact with the side surface of the lock core seat, and a positioning column is provided on the upper part of the limiting boss.

[0007] Further description of the present scheme, the drawer lock also includes a cover plate, which is arranged on one side of the lock base, and a through hole is provided at the center of the cover plate. One end of the lock core seat extends to the outside through the through hole, and a plurality of snap-in holes are also provided on the surface of the cover plate, and the snap-in holes cooperate with the positioning columns.

[0008] Further description of this solution: the inner surface of the lock base is also provided with a plurality of second reinforcing ribs, the second reinforcing ribs are staggered with the first reinforcing ribs to form a tic-tac-toe structure, and the upper surface of the second reinforcing ribs is in contact with the bottom surface of the lock tongue.

[0009] Further description of this solution: a convex column is arranged at one end of the lock core close to the lock tongue, a strip-shaped through hole is opened at the lower end of the lock tongue, and the convex column is arranged inside the strip-shaped through hole.

[0010] Preferably, the limit block and the lock core seat are an integrally formed structure.

[0011] The beneficial effect of the utility model is that when installing the lock core seat, it is only necessary to directly clamp the lock core seat positioning groove at the first reinforcing rib, so as to realize the clamping and fixing of the lock core seat, avoiding the lock core seat from being offset due to long-term use, and at the same time cooperating with the limit block provided at the bottom end of the lock core seat, so as to limit one end of the lock core seat, which can further avoid the lock core seat from moving, and can enable the lock core and lock tongue installed in the lock core seat to be used normally, thereby ensuring that the drawer lock can realize normal locking and unlocking operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of the drawer lock of the utility model;

[0013] Figure 2 This is an exploded view of the overall structure of the drawer lock of the utility model;

[0014] Figure 3 This is a schematic diagram of the combined structure of the lock core seat, lock core and lock tongue of the utility model;

[0015] Figure 4 This is a front view of the combined structure of the lock base, lock core seat, lock core and lock tongue of the utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the lock base of the utility model;

[0017] Figure 6 It is a structural schematic diagram of the lock cylinder seat of the utility model.

[0018] As shown in the figure: lock base 1, lock core seat 2, locking groove 21, lock core 3, lock tongue 4, strip through hole 41, first reinforcing rib 5, limiting block 6, opening 7, limiting boss 8, limiting part 9, positioning column 10, cover plate 11, through hole 111, locking hole 112, second reinforcing rib 12, and boss 13. DETAILED DESCRIPTION

[0019] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0020] As attached Figure 1 , 2 As shown in Figures , 3, 4, 5 and 6, a drawer lock provided by the utility model comprises a lock base 1, a lock core seat 2, a lock core 3 and a lock tongue 4. A lock core seat 2 is arranged inside the lock base 1, and a plurality of first reinforcing ribs 5 are arranged on the inner surface of the lock base 1. A clamping groove 21 is provided on the side of the lock core seat 2 facing the inner surface of the lock base 1, so that the lock core seat 2 can be clamped at the first reinforcing rib 5 on the inner side of the lock base 1 through the clamping groove 21. A limiting block 6 is arranged at the bottom end of the lock core seat 2, and the bottom surface of the limiting block 6 abuts against the inner side surface of the lock base 1. A lock core 3 is rotatably arranged inside the lock core seat 2, and a lock tongue 4 is arranged on one end of the lock core 3 close to the lock base 1. An opening 7 is arranged at one end of the lock base 1, and one end of the lock tongue 4 faces the opening 7.

[0021] When installing the drawer lock: the lock core 3 can be directly installed into the interior of the lock core seat 2 first, and the lock tongue 4 can be installed to the rotating end of the lock core 3 later. When installing the lock core seat 2 later, it is only necessary to directly clamp the locking groove 21 of the lock core seat 2 at the first reinforcing rib 5, so that the lock core seat 2 can be directly clamped into the interior of the lock base 1, thereby preventing the lock core seat 2 from deviating due to long-term use. At the same time, the limiting block 6 set at the bottom end of the lock core seat 2 can limit one end of the lock core seat 2, further preventing the lock core seat 2 from running out of position, and enabling the normal use of the lock core 3 and the lock tongue 4 installed in the lock core seat 2, ensuring that the drawer lock can achieve normal locking and unlocking operations;

[0022] Subsequently, a boss 13 is provided at one end of the lock core 3 close to the lock tongue 4, and a strip through hole 41 is opened at the lower end of the lock tongue 4. The boss 13 is arranged inside the strip through hole 41, so that an eccentric wheel structure can be formed by the cooperation of the boss 13 and the strip through hole 41. When the lock core 3 is unlocked and rotated by an external key, the boss 13 can be driven to rotate synchronously, thereby driving the lock tongue 4 to move up and down, so that the lock tongue 4 can be extended from the opening 7 or retracted into the lock core seat 2, so that the locking and unlocking operations of the drawer lock can be realized.

[0023] It should be noted that the rotation of the lock core 3 by inserting a key is a prior art and a conventional technical means in the art, and will not be described in detail.

[0024] Preferably, the limiting block 6 and the lock cylinder seat 2 are an integrally formed structure.

[0025] As attached Figure 2 , 3 As shown in , 4, 5 and 6, both ends of each first reinforcing rib 5 are provided with a limiting boss 8, a limiting portion 9 is provided on a side of the limiting boss 8 close to the lock cylinder seat 2, a side of the limiting portion 9 away from the limiting boss 8 is in contact with the side surface of the lock cylinder seat 2, and a positioning column 10 is provided on the upper part of the limiting boss 8;

[0026] By providing the limiting portion 9, the two sides of the lock core seat 2 can be further limited, and the position of the lock core seat 2 can be further restricted, which can effectively prevent the lock core seat 2 from moving when working for a long time.

[0027] Subsequently, a plurality of second reinforcing ribs 12 are further provided on the inner surface of the lock base 1. The second reinforcing ribs 12 are staggered with the first reinforcing ribs 5 to form a tic-tac-toe structure. The upper surface of the second reinforcing ribs 12 contacts the bottom surface of the lock tongue 4, thereby avoiding direct friction between the bottom surface of the lock tongue 4 and the inner surface of the lock base 1. The friction contact area of ​​the bottom surface of the lock tongue 4 can be reduced, thereby reducing the friction force generated by the lock tongue 4 when moving, and further improving the service life of the lock tongue 4.

[0028] As attached Figure 2 , 3 As shown in 5 , the drawer lock also includes a cover plate 11, which is arranged on one side of the lock base 1. A through hole 111 is arranged at the center of the cover plate 11. One end of the lock core seat 2 extends to the outside through the through hole 111. A plurality of snap-in holes 112 are also opened on the surface of the cover plate 11, and the snap-in holes 112 cooperate with the positioning column 10.

[0029] When the cover plate 11 needs to be installed, the snap-in hole 112 on the surface of the cover plate 11 can be aligned with the positioning column 10, so that the cover plate 11 can be set on one side of the lock base 1, and then rivets are driven into the snap-in hole 112 to fix the cover plate 11 to the lock base 1, thereby pressing and fixing the components inside the lock base 1.

[0030] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A drawer lock, comprising a lock base (1), a lock core seat (2), a lock core (3) and a lock tongue (4), characterized in that: A lock core seat (2) is arranged inside the lock base (1), and a plurality of first reinforcing ribs (5) are arranged on the inner surface of the lock base (1). A locking groove (21) is provided on one side of the lock core seat (2) facing the inner surface of the lock base (1), so that the lock core seat (2) can be locked to the first reinforcing rib (5) on the inner side of the lock base (1) through the locking groove (21). A limiting block (6) is arranged at the bottom end of the lock core seat (2), and the bottom surface of the limiting block (6) abuts against the inner side surface of the lock base (1). A lock core (3) is rotatably arranged inside the lock core seat (2), and a lock tongue (4) is arranged at one end of the lock core (3) close to the lock base (1). An opening (7) is arranged at one end of the lock base (1), and one end of the lock tongue (4) faces the opening (7).

2. A drawer lock according to claim 1, characterized in that: Both ends of each of the first reinforcing ribs (5) are provided with limiting bosses (8); a limiting portion (9) is provided on a side of the limiting boss (8) close to the lock cylinder seat (2); a side of the limiting portion (9) away from the limiting boss (8) is in contact with a side surface of the lock cylinder seat (2); and a positioning column (10) is provided on the upper portion of the limiting boss (8).

3. A drawer lock according to claim 1, characterized in that: The drawer lock further comprises a cover plate (11), the cover plate (11) being arranged on one side of the lock base (1), a through hole (111) being arranged at the center of the cover plate (11), one end of the lock core seat (2) extending outside through the through hole (111), and a plurality of snap-fit ​​holes (112) being arranged on the surface of the cover plate (11), the snap-fit ​​holes (112) cooperating with the positioning column (10).

4. A drawer lock according to claim 1, characterized in that: The inner surface of the lock base (1) is also provided with a plurality of second reinforcing ribs (12), the second reinforcing ribs (12) and the first reinforcing ribs (5) being arranged in an alternating manner to form a tic-tac-toe structure, and the upper surface of the second reinforcing ribs (12) is in contact with the bottom surface of the lock tongue (4).

5. A drawer lock according to claim 1, characterized in that: A convex column (13) is provided at one end of the lock core (3) close to the lock tongue (4), a strip-shaped through hole (41) is provided at the lower end of the lock tongue (4), and the convex column (13) is arranged inside the strip-shaped through hole (41).

6. A drawer lock according to claim 1, characterized in that: The limit block (6) and the lock core seat (2) are an integrally formed structure.

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