Cabinet locking structure

Abstract

The application relates to the technical field of cabinet lock, in particular to a cabinet locking structure. The cabinet locking structure comprises a door plate and a door frame, the door plate is equal in length on four sides, the inner side of the door plate comprises a lock tongue, a fixed pin and an elastic steel wire, one end of the elastic steel wire is fixed to the fixed pin, the other end of the elastic steel wire is connected to the first end of the lock tongue; the elastic steel wire is circular in the natural state, the center of the circle coincides with the geometric center of the door plate, and the diameter of the circle is larger than the length of the door plate; the door frame is provided with a door frame groove, when locked, the elastic steel wire is clamped into the door frame groove, the door plate is tightly attached to the door frame, and locking is completed; when unlocked, the lock tongue is rotated, the elastic steel wire is tightened inward, is separated from the door frame groove, and unlocking is realized. The application solves the problems of the prior art, such as complex cabinet door installation, difficult disassembly, insufficient safety and the like, has novel structure, low cost and convenient operation, and makes the cabinet appearance beautiful and has good use value.

Description

Technical Field

[0001] This application relates to the field of cabinet lock technology, and in particular to a cabinet locking structure. Background Technology

[0002] A server rack is a steel cabinet used to protect components and ensure their proper functioning. For example, outdoor signal cabinets require the installation of various electrical components. The specific structure of a server rack includes the cabinet body and the maintenance doors located around its perimeter. Traditionally, the cabinet door is hinged on one side to a rectangular frame base, while a lock on the other side closes the door. Currently, server rack locks generally use common rotary latches. By inserting a key, the latch can be rotated 90 degrees to change the position from horizontal to vertical, thus opening the door. This locking structure allows the door to be opened from the outside even without a key, resulting in a low level of security and inadequate protection. Furthermore, existing server rack locks have the following problems: when the door is locked, a gap remains between the door and the cabinet body, which can easily lead to dust accumulation inside the cabinet or door wobbling. After prolonged operation, excessive dust can cause the components inside to overheat, affecting the performance of the server rack. Some maintenance tasks require opening not only the front and rear doors but also the left and right side doors. However, existing side doors are typically secured with screws, requiring a screwdriver to loosen these screws before opening the door for maintenance. This is inconvenient, time-consuming, and can even cause the screws to strip due to repeated tightening, making them impossible to open or securely install. To overcome these difficulties in cabinet installation and maintenance, further improvements are needed based on existing technology.

[0003] This application proposes a new technical solution to solve the above problems. This application adopts a detachable door panel design, which uses a flexible steel wire in conjunction with a lock. After the door panel is unlocked, it is completely detached from the door frame. This design is convenient for installation and disassembly, and can also enhance security and sealing. Summary of the Invention

[0004] In order to optimize the shortcomings of existing cabinet locking structures and solve the problems of complex cabinet door installation, difficult disassembly, and security and sealing issues in the prior art, this application provides a cabinet locking structure.

[0005] A cabinet locking structure includes a door panel and a door frame. The door panel has four equal sides and its inner side includes a latch, a fixing pin, and an elastic steel wire. One end of the elastic steel wire is fixed to the fixing pin, and the other end is connected to the first end of the latch. The elastic steel wire is circular in its natural state, with its center coinciding with the geometric center of the door panel, and the diameter of the circle is larger than the side length of the door panel. The door frame has a groove. When locked, the elastic steel wire is engaged in the groove of the door frame, and the door panel fits tightly against the door frame, completing the locking. When unlocking, rotating the latch causes the elastic steel wire to tighten inward, disengaging from the groove of the door frame, thus unlocking.

[0006] Furthermore, each of the four sides of the door panel is provided with an elongated through hole, and the elastic steel wire protrudes from the elongated through hole, with the protruding part being clamped into the groove of the door frame.

[0007] Furthermore, the second end of the latch is a fixed end, and the latch can rotate along the second end. When the maximum rotation angle is reached, the protruding part retracts towards the center and disengages from the door frame groove.

[0008] Furthermore, the inner side of the door panel also includes a guide block, which has a side opening for embedding the elastic steel wire. The guide block guides the elastic steel wire to retract during unlocking.

[0009] Furthermore, two guide blocks are placed near the edge of each top corner on the inner side of the door panel.

[0010] Furthermore, the fixing pin consists of two parts: the first part is a hollow cylinder with internal threads, and the second part is a bolt body; the first part and the second part are screwed together to fix the elastic steel wire.

[0011] Furthermore, the inner side of the door panel also includes a limiting device, which consists of two parts. The first part is a hollow cylinder with internal threads and two opposing openings. The second part is a bolt body. The first part and the second part are spirally connected to form a cavity. The elastic steel wire passes through the cavity and is then connected to the first end of the latch.

[0012] Furthermore, the door panel surface has a recessed design at the position where the lock cylinder is installed, so that the surface of the lock cylinder is flush with the surface of the door panel after installation.

[0013] This application offers the following advantages: ① It adopts a fully detachable door panel structure design, which is simple to operate, easy to install, and requires minimal skill from on-site installers. ② This application does not simply use a rotary lock for locking; the elastic steel wire connected to the rotary lock has a certain strength. The protruding parts of the elastic steel wire extending from the four sides of the door panel form a locking structure with the door frame groove. Unauthorized personnel cannot open the cabinet from the outside without a key, enhancing the cabinet's security. ③ The width of the elongated through holes on the four sides of the door panel matches the diameter of the elastic steel wire perfectly. Combined with the tension of the elastic steel wire, the door panel will not wobble after installation, enhancing its sealing performance. ④ This locking structure allows for effective fixing of the door panels to the cabinet without external tools. The doors can be easily locked or opened manually, facilitating maintenance of internal components. Maintenance is more convenient and faster than using screws to fix the doors, improving user experience. ⑤ This application features a reasonable design, novel structure, low cost, and convenient operation, while also making the cabinet more aesthetically pleasing, thus possessing significant potential for widespread adoption. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the inner side of the overall structure of an embodiment of this application;

[0016] Figure 2 This is a partial schematic diagram of the elastic steel wire embedded in the door frame according to an embodiment of this application;

[0017] Figure 3 This is a perspective view of the overall structure of an embodiment of this application;

[0018] Figure 4 This is a schematic diagram of the guide block structure according to an embodiment of this application;

[0019] Figure 5 This is a schematic diagram of the limiting device and fixing pin structure according to an embodiment of this application;

[0020] Explanation of the labels in the diagram:

[0021] 1. Locking tongue; 2. Limiting device; 3. Fixing pin; 4. Guide block; 5. Elastic steel wire;

[0022] 6. Door panel; 7. Door panel side; 8. Groove; 9. Long through hole; 10. Second end of latch; 11. First end of latch; 12. Door frame; 13. Center hole; 14. Side opening; 15. Rectangular base; 16. Square structure; 17. Hollow cylinder; 18. Circular through hole; 19. Bolt body; 20. Limiting body; 21. Hollow cylinder; 22. Opposite opening; 23. Bolt body;

[0023] 24. Lock cylinder Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figures 1-5 As shown, this application provides a cabinet locking structure, including a door panel 6 and a door frame 12. The door panel 6 has four equal sides, and its inner side includes a latch 1, a fixing pin 3, and an elastic steel wire 5. One end of the elastic steel wire 5 is fixed to the fixing pin 3, and the other end is connected to the first end 11 of the latch. The fixing pin 3 is a fixed end, fixing one end of the elastic steel wire 5 in place, while the first end 11 of the latch is a movable end, which can rotate. The elastic steel wire 5 is circular in its natural state, with its center coinciding with the geometric center of the door panel 6, and the diameter of the circle is larger than the side length of the door panel 6. The door frame 12 has a groove 8. When locked, the elastic steel wire 5 is in its natural state and is locked into the groove 8 of the door frame 12. Due to the tension, the door panel 6 and the door frame 12 fit tightly together, completing the locking. When unlocking, the latch 1 is rotated, and the elastic steel wire 5 is tightened inward under the action of the latch 1, disengaging from the groove 8 of the door frame 12, thus unlocking. The locking and unlocking methods described above are simple and easy to operate. Simply turn the bolt 1 with the key to disengage the elastic steel wire 5 from the groove 8 of the door frame 12, and the door panel 6 can be completely detached from the door frame 12. This complete detachment method facilitates maintenance. After maintenance, place the door panel 6 inside the door frame 12. The elastic steel wire 5 will return to its original state and lock into the groove 8 of the door frame 12, thus locking the door panel 6 and the door frame 12 together.

[0027] like Figure 2As shown, each of the four sides of the door panel 6 has an elongated through hole 9. The elastic steel wire 5 protrudes from the elongated through hole 9, and the protruding part is locked into the groove 8 of the door frame 12. The width of the groove 8 of the door frame 12 is 1-2 mm larger than the diameter of the elastic steel wire 5. After the elastic steel wire 5 is embedded in the groove 8 of the door frame 12, the door panel 6 will not shake, resulting in high sealing performance. The elastic steel wire 5 is circular and attached to the door panel 6, saving material of the elastic steel wire 5 while locking the door panel 6. The maximum depth of the protruding part from the side 7 of the door panel is 17-19 mm.

[0028] In an optional embodiment, the second end 10 of the latch is a fixed end, and the latch 1 can rotate along the second end 10. During the rotation from the start to the maximum rotation angle, the protruding part retracts towards the center and disengages from the groove 8 of the door frame 12. The maximum rotation angle of the latch 1 is 90°. The latch 1 drives the elastic steel wire 5 to tighten within the rotation range of 0~90° until the door panel 6 disengages from the door frame 12. After the elastic steel wire 5 retracts, the position of the protruding part can be just reaching the elongated through hole 9, at which point the outer circle of the elastic steel wire 5 is flush with the outer surface of the side surface 7 of the door panel, or it can pass through the elongated through hole 9 and leave the side surface 7 of the door panel to unlock. After unlocking, the elastic steel wire 5 returns to its natural state according to the guided trajectory. A limiting body 20 is welded below the first end 11 of the latch. The limiting body 20 is an inverted bolt structure with the bolt head at the bottom. The limiting body 20 serves to connect one end of the elastic steel wire 5 and also acts as a limiter, preventing the elastic steel wire 5 from slipping off when it momentarily loosens due to the action of the reverse force during release.

[0029] In an optional embodiment, the inner side of the door panel 6 further includes a guide block 4. The guide block 4 has a side opening 14 for embedding the elastic steel wire 5 and guiding the elastic steel wire 5 along its retraction trajectory during unlocking. The guide block 4 is formed by bending a rectangular thin plate at 90° and can be divided into two parts. The first part is a rectangular base 15, fixed to the inner side of the door panel 6; the second part is a square structure 16 with a central hole 13, which is circular. The center of this circular hole coincides with the geometric center of the second part. The second part is perpendicular to the first part and is an integral structure. Two guide blocks 4 are placed near the edge of each apex of the inner side of the door panel 6. The elastic steel wire 5 is embedded from the side opening 14 of the guide block 4, making operation convenient and quick. The direction of the side opening 14 of the guide block 4 is opposite to the direction of the geometric center of the door panel 6, so that the elastic steel wire 5 will not pop out from the side opening 14 during contraction and release. The guide block 4 can both guide and limit the elastic steel wire 5, so that the elastic steel wire 5 can contract and release according to a preset trajectory.

[0030] In an optional embodiment, the fixing pin 3 consists of two parts: a first part is a hollow cylinder 17 with internal threads, and a second part is a bolt body 19; the first part and the second part are screwed together to fix the elastic steel wire 5. The first part has two circular through holes 18 on its side, which penetrate the inner and outer walls of the first part. The two circular through holes 18 are symmetrically distributed along the central axis of the first part. The elastic steel wire 5 passes through and is fixed in the two circular through holes 18. The second part is screwed into the first part to press the elastic steel wire 5, ensuring a secure fixation.

[0031] In an optional embodiment, the inner side of the door panel 6 further includes a limiting device 2, which consists of two parts: a first part is a hollow cylinder 21 with internal threads and two opposing openings 22; the second part is a bolt body 23; the first part and the second part are spirally connected to form a cavity, through which the elastic steel wire 5 passes and is connected to the first end of the latch 1. The opposing openings 22 extend from the top of the first part to the lower half of the first part and are symmetrically distributed along the central axis of the first part; after the cavity is formed, the elastic steel wire 5 is confined within the cavity and cannot come out. When the elastic steel wire 5 returns to its natural state without external force, the latch 1 will rebound with the elastic steel wire 5. The latch 1 stops when it encounters the limiting device 2 during the rebound process. The function of the limiting device 2 is to prevent the latch 1 from being damaged due to excessive tension during the rebound process.

[0032] In an optional embodiment, the position where the lock cylinder 24 is installed on the door panel 6 is recessed, so that the surface of the lock cylinder 24 is flush with the surface of the door panel 6 after installation. This is different from the traditional cabinet door lock, which is set to protrude a part, reflecting the aesthetics of this design.

[0033] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection", and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A cabinet locking structure, comprising a door panel and a door frame, characterized in that, The door panel has four equal sides and its inner side includes a latch, a fixing pin, and an elastic steel wire. One end of the elastic steel wire is fixed to the fixing pin, and the other end is connected to the first end of the latch. The elastic steel wire is circular in its natural state, with its center coinciding with the geometric center of the door panel, and the diameter of the circle is larger than the side length of the door panel. The door frame has a groove. When locked, the elastic steel wire is engaged in the groove of the door frame, and the door panel fits tightly against the door frame, thus locking. When unlocking, rotating the latch causes the elastic steel wire to tighten inward, disengaging from the groove of the door frame, thereby unlocking.

2. The cabinet locking structure according to claim 1, characterized in that, The door panel has elongated through holes on all four sides, and the elastic steel wire protrudes from the elongated through holes, with the protruding part being secured into the groove of the door frame.

3. The cabinet locking structure according to claim 2, characterized in that, The second end of the latch is a fixed end, and the latch rotates along the second end. When the maximum rotation angle is reached, the protruding part retracts towards the center and disengages from the door frame groove.

4. The cabinet locking structure according to claim 1, characterized in that, The inner side of the door panel also includes a guide block, which has a side opening for embedding the elastic steel wire. The guide block guides the elastic steel wire to retract during unlocking.

5. A cabinet locking structure according to claim 4, characterized in that, Two guide blocks are placed near the edge of each top corner on the inner side of the door panel.

6. The cabinet locking structure according to claim 1, characterized in that, The fixing pin consists of two parts: the first part is a hollow cylinder with internal threads, and the second part is a bolt body; the first part and the second part are screwed together to fix the elastic steel wire.

7. A cabinet locking structure according to claim 1, characterized in that, The inner side of the door panel also includes a limiting device, which consists of two parts. The first part is a hollow cylinder with internal threads and two openings. The second part is a bolt body. The first part and the second part are spirally connected to form a cavity. The elastic steel wire passes through the cavity and is then connected to the first end of the latch.

8. A cabinet locking structure according to claim 1, characterized in that, The door panel surface also includes a lock cylinder, which is connected to the lock tongue. The position on the door panel where the lock cylinder is installed is recessed, and the surface of the lock cylinder is flush with the surface of the door panel after installation.

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