Lock for cabinet

Abstract

The utility model relates to the field of locksets, and particularly discloses a lock for a cabinet, which comprises a face shield plate, and one side of the face shield plate is fixedly connected with a central pipe; a key hole is formed in the central pipe; symmetrical grooves are formed in the key hole; a cylindrical key is inserted into the key hole; aligning grooves are symmetrically formed in the cylindrical key; a slotted pin in the alignment groove is connected with a fillet clamping block; the central pipe is inserted into the hole in the cabinet door to be matched with the bolt to complete fixation, then when the lock tongue needs to be rotated to complete fixation, the cylindrical key only needs to be pre-aligned with the key hole, then aligned with the fillet clamping blocks and inserted into the symmetrical grooves, then the cylindrical key is inserted to the bottom, and then the cylindrical key is pulled back; the circular bead clamping block is inserted into the rotating groove and the positioning groove, at the moment, the cylindrical key is rotated to drive the spring bolt to rotate to the vertical state, the lock is opened, the cabinet door can rotate, and the problem that an existing lock key is poor in anti-theft function is solved.

Description

Technical Field

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

[0002] A cabinet is an independent or self-supporting housing used to house electrical or electronic equipment. It is generally equipped with doors, removable or non-removable side panels and back panels. The cabinet is an indispensable component of electrical equipment and a carrier of electrical control equipment. Therefore, in order to protect the internal carrier, locks are required for protection.

[0003] The Chinese invention patent with publication number CN108915421 B disclosed a cabinet door lock on October 17, 2023, including a shell, a lock core assembly, a handle, and an unlocking assembly; wherein, the upper surface of the shell is provided with a receiving groove for accommodating the handle; the lock core assembly is located in the shell, and is used to achieve the locking and unlocking of the cabinet door; one end of the handle is connected to the lock core assembly, and the handle can be accommodated in the receiving groove, or escape from the receiving groove; the unlocking assembly is installed at the other end of the handle; and is used to achieve the locking and unlocking of the handle and the shell. The technical solution of the present invention, by arranging the unlocking assembly of the unlocking handle on the handle, makes the unlocking assembly no longer occupy the space of the handle, thereby effectively increasing the length of the handle to facilitate the user to hold; and because the unlocking assembly is arranged on the handle, it can effectively prevent violent demolition, thereby effectively improving the safety of the cabinet.

[0004] However, the above-mentioned disclosed solutions have the following shortcomings: the existing lock core using a conventional key is convenient for configuration and also convenient for use with other tools to unlock, which makes the security low and cannot effectively protect the cabinet. Utility Model Content

[0005] The utility model aims to solve the technical problem that the existing lock core using a conventional key is convenient to configure and is also convenient to use other tools to unlock, resulting in low security and failure to effectively protect the cabinet, and provides a lock for a cabinet.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model discloses a lock for a cabinet, comprising a mask plate and a keyhole; a center tube is fixedly connected to one side of the mask plate; a keyhole is provided on the center tube; a symmetrical groove is provided in the keyhole; a cylindrical key is inserted in the keyhole; an alignment groove is symmetrically provided on the cylindrical key; a rounded corner block is connected to a slotted pin in the alignment groove; the rounded corner block is inserted in the symmetrical groove, the rotation groove and the positioning groove; the rotation groove is rotationally symmetrically provided in the center tube; the positioning groove is symmetrically provided in the lock tongue; an elastic band is fixedly connected to the slot on the rounded corner block; a positioning block is fixedly connected to the end of the elastic band; the positioning block is inserted and fixed in the symmetrical groove.

[0008] Furthermore, a hexagonal nut is threadedly sleeved on the central tube; the locking tongue is movably inserted in the central tube; and a limiting piece is threadedly sleeved on the central tube corresponding to the locking tongue.

[0009] Furthermore, a fastener is inserted into a symmetrical opening on the lock tongue; a slider is threadedly sleeved on the end of the fastener; a spring is fixed to the slider; and the end of the spring is fixed in the semi-arc groove.

[0010] Furthermore, the angle between the initial angle of the lock tongue and the direction of gravity is forty-five degrees.

[0011] Furthermore, the central tube is plugged into the cabinet door.

[0012] The utility model provides a cabinet lock, which has the following beneficial effects:

[0013] 1. The utility model inserts the central tube into the hole on the cabinet door and fixes it with bolts. Then, when the lock tongue needs to be rotated to fix it, it is only necessary to pre-align the cylindrical key with the key hole, align the rounded corner block and insert it into the symmetrical groove, then insert the cylindrical key to the bottom, and then pull the cylindrical key back so that the rounded corner block is inserted into the rotating groove and the positioning groove. At this time, rotating the cylindrical key can drive the lock tongue to rotate to a vertical state. At this time, the lock is opened and the cabinet door can be rotated, which solves the problem of poor anti-theft function of existing lock keys;

[0014] 2. The utility model uses the elastic force of the spring to make the slider and the fastener slide to the end of the semi-arc groove and stop, and then rotates with the lock tongue, so that the lock tongue is pushed by the spring at an inclined angle in the initial state, so that the cabinet door can be stuck, thereby completing the normally closed function. The lock tongue can only be rotated to a vertical state when the cylindrical key is inserted and rotated, so as to facilitate opening the cabinet door, and after the cylindrical key is loosened by hand, the lock tongue returns to its original angle, so that the cabinet door cannot be closed, thereby reminding the personnel to close the cabinet door and lock it, preventing accidental opening caused by the half-opening of the cabinet door, realizing a fool-proof function of the cabinet door locking, and solving the problem that the existing cabinet lock does not have a fool-proof locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings;

[0016] Figure 1 This is a schematic diagram of the axonometric structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the first half of the structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the second half of the structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the first use structure of the utility model;

[0020] Figure 5 This is a schematic diagram of a second usage structure of the utility model.

[0021] Explanation of the numbers in the figure: 1. Mask plate; 2. Keyhole; 3. Cylindrical key; 4. Symmetrical groove; 5. Alignment groove; 6. Hexagonal nut; 7. Block; 8. Elastic band; 9. Rounded block; 10. Rotation groove; 11. Center tube; 12. Semi-arc groove; 13. Spring; 14. Slider; 15. Fastener; 16. Limiter; 17. Lock tongue; 18. Cabinet door; 19. Positioning groove. DETAILED DESCRIPTION

[0022] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0025] See also Figure 1-5As shown, a lock used in a cabinet comprises a face plate 1 and a keyhole 2; a central tube 11 is fixedly connected to one side of the face plate 1; a keyhole 2 is opened on the central tube 11; a symmetrical groove 4 is opened in the keyhole 2; a cylindrical key 3 is inserted in the keyhole 2; an alignment groove 5 is symmetrically opened on the cylindrical key 3; a rounded corner block 9 is connected to a slotted pin in the alignment groove 5; the rounded corner block 9 is inserted in the symmetrical groove 4, the rotation groove 10 and the positioning groove 19; the rotation groove 10 is rotationally symmetrically opened in the central tube 11; the positioning groove 19 is symmetrically opened in the lock tongue 17; an elastic band 8 is fixedly slotted on the rounded corner block 9; The end of the elastic band 8 is fixedly connected with a blocking block 7; the blocking block 7 is plugged and fixed in the symmetrical groove 4; when working, the center tube 11 is inserted into the hole on the cabinet door 18 and fixed with the bolt, and then when the lock tongue 17 needs to be rotated to complete the fixation, it is only necessary to pre-align the cylindrical key 3 with the key hole 2, and then align the rounded block 9 and insert it into the symmetrical groove 4, and then insert the cylindrical key 3 to the bottom, and then pull back the cylindrical key 3 so that the rounded block 9 is inserted into the rotating groove 10 and the positioning groove 19. At this time, rotating the cylindrical key 3 can drive the lock tongue 17 to rotate to a vertical state. At this time, the lock is opened and the cabinet door 18 can be rotated, which solves the problem of poor anti-theft function of existing locks and keys.

[0026] A hexagonal nut 6 is threadedly mounted on the central tube 11; the locking tongue 17 is movably inserted in the central tube 11; a limiting member 16 is threadedly mounted on the central tube 11 corresponding to the locking tongue 17; when working, the central tube 11 and the mask plate 1 can be locked on the cabinet body by means of the hexagonal nut 6 in conjunction with the central tube 11 and the mask plate 1, and then the connection can be reinforced again by external bolts, and the displacement of the locking tongue 17 can be limited by the limiting member 16, so that the locking tongue 17 can only perform rotational movement, thereby making it safer.

[0027] The fasteners 15 are inserted into the symmetrical openings on the lock tongue 17; the slider 14 is threadedly sleeved at the end of the fastener 15; the spring 13 is fixedly connected to the slider 14; the end of the spring 13 is fixedly connected to the semi-arc groove 12; when working, the slider 14 and the fastener 15 slide to the end and stop in the semi-arc groove 12 by the elastic force of the spring 13, and then rotate with the lock tongue 17, so that the lock tongue 17 is pushed by the spring 13 at an inclined angle in the initial state, so that the cabinet door 18 can be stuck, thereby completing the normally closed function, and the lock tongue 17 can only be rotated to a vertical state when the cylindrical key 3 is inserted and rotated, so as to facilitate opening the cabinet door 18, and after the hand loosens the cylindrical key 3, the lock tongue 17 returns to the original angle, so that the cabinet door 18 cannot be closed, thereby reminding the personnel to close the cabinet door 18 and lock it, preventing the accidental opening caused by the half-opening of the cabinet door 18, and realizing a fool-proof function of locking the cabinet door 18, solving the problem that the existing cabinet lock does not have a fool-proof locking.

[0028] The initial angle of the lock tongue 17 and the angle between the gravity direction and the lock tongue 17 are forty-five degrees. When working, the initial angle of the lock tongue 17 and the angle between the gravity direction and the lock tongue 17 are forty-five degrees, so that when the lock is not opened, the lock remains in a stable locked state, making it more stable and safer during handling and transportation, and it is not easy to open in a collision, which solves the problem that the existing lock has no self-locking function and opens during transportation vibration.

[0029] The central tube 11 is plugged into the cabinet door 18; when working, the lock can be fixed on the cabinet door 18 through the central tube 11 and the hexagonal nut 6, thus completing the assembly function.

[0030] By adopting the above scheme, when the utility model is in use, the center tube 11 is inserted into the hole on the cabinet door 18 and fixed with the bolts. Then, when it is necessary to rotate the lock tongue 17 to complete the fixation, it is only necessary to pre-align the cylindrical key 3 with the keyhole 2, and then align the rounded corner block 9 and insert it into the symmetrical groove 4, and then insert the cylindrical key 3 to the bottom, and then pull back the cylindrical key 3 so that the rounded corner block 9 is inserted into the rotating groove 10 and the positioning groove 19. At this time, rotating the cylindrical key 3 can drive the lock tongue 17 to rotate to a vertical state. At this time, the lock is opened and the cabinet door 18 can be rotated, which solves the problem of poor anti-theft function of the existing lock key; the hexagonal nut 6 is used in conjunction with the center tube 11 and the mask plate 1 to complete the locking on the cabinet body, and then the external bolts can be used to reinforce the connection again. The displacement of the lock tongue 17 can be limited by the limit member 16, so that the lock tongue 17 can only perform rotational movement, which makes it safer.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A lock for a cabinet, characterized in that; The invention comprises a mask plate (1) and a key hole (2); a central tube (11) is fixedly connected to one side of the mask plate (1); a key hole (2) is provided on the central tube (11); a symmetrical groove (4) is provided in the key hole (2); a cylindrical key (3) is inserted in the key hole (2); an alignment groove (5) is symmetrically provided on the cylindrical key (3); a rounded corner block (9) is connected to a slotted pin in the alignment groove (5); the rounded corner block (9) is inserted in the symmetrical groove (4), the rotation groove (10) and the positioning groove (19); the rotation groove (10) is rotationally symmetrically provided in the central tube (11); the positioning groove (19) is symmetrically provided in the lock tongue (17); an elastic band (8) is slotted and fixedly connected to the rounded corner block (9); a positioning block (7) is fixedly connected to the end of the elastic band (8); the positioning block (7) is inserted and fixed in the symmetrical groove (4).

2. The cabinet lock according to claim 1, characterized in that: A hexagonal nut (6) is threadedly sleeved on the central tube (11); the locking tongue (17) is movably inserted in the central tube (11); and a limiting member (16) is threadedly sleeved on the central tube (11) corresponding to the locking tongue (17).

3. The lock for a cabinet according to claim 2, characterized in that: A fastener (15) is inserted into a symmetrical opening on the lock tongue (17); a slider (14) is threadedly sleeved on the end of the fastener (15); a spring (13) is fixedly connected to the slider (14); and the end of the spring (13) is fixedly connected to the semi-arc groove (12).

4. The lock for a cabinet according to claim 3, characterized in that: The initial angle of the locking tongue (17) and the direction of gravity are 45 degrees.

5. The lock for a cabinet according to claim 4, characterized in that: The central tube (11) is plugged into the cabinet door (18).

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