Anti-prying and self-closing protection device for door lock of electric appliance cabinet
By combining electronic combination locks with a concealed mechanical locking structure, the problems of insufficient anti-pry performance and lack of self-closing function of appliance cabinet door locks are solved, achieving complementarity between electronic and mechanical protection and enhancing the security of appliance cabinets.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YICHANG YONGTONG ELECTRICAL EQUIP CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-08
AI Technical Summary
Existing appliance cabinet door locks have problems with insufficient anti-pry performance and lack of self-closing function. Mechanical locks have simple structures and are easy to crack, while electronic locks lack physical protection measures. Once the electronic system is cracked or subjected to electromagnetic interference, the door lock loses its protective capability.
It combines electronic combination lock with hidden mechanical locking structure, forming a physical layer of reinforced defense through double mechanical locking of the card block and card slot, and the insertion block and slot. The card block design allows it to be tightly engaged with the card slot when the handle is not operated, achieving complementarity between electronic and mechanical protection.
It provides basic electronic protection to prevent unauthorized entry and increases the difficulty of forced entry through a mechanical locking structure, achieving complementarity between electronic and mechanical protection and filling the security gaps of single protection.
Smart Images
Figure CN224213956U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical cabinet technology, and in particular to an anti-pry and self-closing protection device for electrical cabinet door locks. Background Technology
[0002] With the continuous improvement of industrial automation and informatization, the security of electrical cabinets, as the core carriers of power distribution and signal control, is becoming increasingly critical. Currently, electrical cabinet door locks on the market generally have insufficient anti-pry performance and lack self-closing function, making it difficult to meet the increasingly stringent security protection requirements.
[0003] Traditional appliance cabinet door locks mostly use mechanical locks, such as pin tumbler locks and wafer locks. Their lock cylinder structure is simple, and criminals can open them in a short time using professional lock picking tools or techniques. In addition, although some appliance cabinets use electronic locks, they mostly rely on a single password or card verification and lack physical anti-pry reinforcement measures. Once the electronic system is cracked or subjected to electromagnetic interference, the door lock loses its protective capability. Therefore, we propose an anti-pry and self-closing protection device for appliance cabinet door locks. Utility Model Content
[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide an anti-pry and self-closing protection device for appliance cabinet door locks. This device can solve the problem that traditional appliance cabinet door locks mostly use mechanical locks, such as pin tumbler locks and leaf locks, whose lock cylinder structures are simple. With professional lock picking tools or technical means, criminals can open the locks in a short time. In addition, although some appliance cabinets use electronic locks, they mostly rely on a single password or card verification and lack physical anti-pry reinforcement measures. Once the electronic system is cracked or subjected to electromagnetic interference, the door lock loses its protective capability.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-pry and self-closing protection device for an appliance cabinet door lock, comprising:
[0006] The appliance cabinet body and cabinet door are hinged to one side of the appliance cabinet body and are equipped with an electronic combination lock.
[0007] The self-closing protection structure is located on the cabinet door.
[0008] The self-closing protection structure includes a handle, an annular positioning block, a connecting column, and a rotating plate. The annular positioning block is fixedly connected to the side of the cabinet door away from the appliance cabinet body. The handle is slidably connected inside the annular positioning block. A limiting groove is provided inside the cabinet door. The connecting column is fixedly connected to the end of the handle near the cabinet door. The end of the connecting column away from the handle passes through the interior of the limiting groove and is fixedly connected to the rotating plate. A limiting groove is provided on one side of the rotating plate. A limiting groove is provided inside the handle. A slot is provided inside the annular positioning block. A slot is provided on one side of the inner wall of the appliance cabinet body. A first limiting slide plate is fixedly sleeved on the outer surface of the connecting column. The first limiting slide plate is slidably connected inside the limiting groove. A second spring is sleeved on the outer surface of the connecting column.
[0009] Preferably, the self-closing protection structure further includes an insert block, a first spring, a pressing block, and a third limiting slide plate. The third limiting slide plate is slidably connected inside the second limiting slide groove. The pressing block and the insert block are both fixedly connected to one side of the third limiting slide plate. The ends of the pressing block and the insert block away from the third limiting slide plate both slide to the outside of the second limiting slide groove. The insert block is inserted into the slot. The first spring is fixedly connected to the side of the third limiting slide plate away from the pressing block. The end of the first spring away from the third limiting slide plate is fixedly connected to the inside of the second limiting slide groove. The inside of the third limiting slide groove is slidably connected to a second limiting slide plate. A locking block is fixedly connected to one side of the second limiting slide plate. The third spring is fixedly connected to the side of the second limiting slide plate away from the locking block.
[0010] Preferably, the end of the locking block away from the second limiting slide plate slides to the outside of the limiting slide groove three, and the locking block engages with the locking groove.
[0011] Preferably, the end of the third spring away from the second limiting slide plate is fixedly connected to the inside of the limiting slide groove three, and the third spring is located inside the limiting slide groove three.
[0012] Preferably, the second limiting groove has a "U" shaped structure.
[0013] Preferably, one end of the second spring is fixedly connected to the first limiting slide plate, and the end of the second spring away from the first limiting slide plate is fixedly connected to the inside of the limiting slide groove.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. This appliance cabinet door lock anti-pry and self-closing protection device combines an electronic combination lock with a hidden mechanical locking structure. The electronic combination lock provides basic electronic protection to prevent unauthorized entry, while the dual mechanical locking of the locking block and slot, and the insertion block and slot, forms a physical layer of reinforced defense. The length design of the locking block ensures that it is tightly engaged with the slot when the handle is not operated, making it impossible to force open without authorization. This achieves the complementarity of electronic and mechanical protection, filling the security loopholes of single protection. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0018] Figure 2 This is a schematic diagram of the electronic combination lock structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the handle of this utility model;
[0020] Figure 4 This is a schematic cross-sectional view of the electrical cabinet body of this utility model;
[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the annular positioning block of this utility model.
[0022] Reference numerals in the attached diagram: 1. Appliance cabinet body; 2. Cabinet door; 3. Handle; 4. Electronic combination lock; 5. Circular positioning block; 6. Limiting slide groove one; 7. Rotating plate; 8. Slot; 9. Limiting slide groove two; 10. Pressing block; 11. Inserting block; 12. First spring; 13. Connecting column; 14. Second spring; 15. First limiting slide plate; 16. Third spring; 17. Slot; 18. Limiting slide groove three; 19. Second limiting slide plate; 20. Slot; 21. Third limiting slide plate. Detailed Implementation
[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0025] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.
[0026] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0027] Please see Figure 1-5 This utility model provides a technical solution: an anti-pry and self-closing protection device for an appliance cabinet door lock, comprising:
[0028] The appliance cabinet body 1 and the cabinet door 2 are hinged to one side of the appliance cabinet body 1 and an electronic combination lock 4 is installed on the cabinet door 2.
[0029] The self-closing protection structure is located on cabinet door 2;
[0030] The self-closing protection structure includes a handle 3, an annular positioning block 5, a connecting column 13, and a rotating plate 7. The annular positioning block 5 is fixedly connected to the side of the cabinet door 2 away from the appliance cabinet body 1. The handle 3 is slidably connected inside the annular positioning block 5. A limiting groove 6 is opened inside the cabinet door 2. The connecting column 13 is fixedly connected to the end of the handle 3 near the cabinet door 2. The end of the connecting column 13 away from the handle 3 passes through the interior of the limiting groove 6 and is fixedly connected to the rotating plate 7. A limiting groove 18 is opened on one side of the rotating plate 7. A limiting groove 9 is opened inside the handle 3. The limiting groove 9 has a "U" shaped structure.
[0031] The annular positioning block 5 has a slot 20 inside, and the inner wall of the electrical cabinet body 1 has a slot 8 on one side. The first limiting slide plate 15 is fixedly sleeved on the outer surface of the connecting column 13. The first limiting slide plate 15 is slidably connected to the inside of the limiting slide groove 6. The second spring 14 is sleeved on the outer surface of the connecting column 13. One end of the second spring 14 is fixedly connected to the first limiting slide plate 15, and the end of the second spring 14 away from the first limiting slide plate 15 is fixedly connected to the inside of the limiting slide groove 6.
[0032] The self-closing protection structure also includes an insert block 11, a first spring 12, a pressing block 10, and a third limiting slide plate 21. The third limiting slide plate 21 is slidably connected inside the limiting slide groove 9. The pressing block 10 and the insert block 11 are both fixedly connected to one side of the third limiting slide plate 21. The ends of the pressing block 10 and the insert block 11 away from the third limiting slide plate 21 are slidably extended to the outside of the limiting slide groove 9. The insert block 11 is inserted into the slot 20. The first spring 12 is fixedly connected to the side of the third limiting slide plate 21 away from the pressing block 10. The end of the first spring 12 away from the third limiting slide plate 21 is fixedly connected to the inside of the limiting slide groove 9.
[0033] The inner side of the limiting slide groove 18 is slidably connected to the second limiting slide plate 19. The second limiting slide plate 19 is fixedly connected to one side of the second limiting slide plate 19. The side of the second limiting slide plate 19 away from the locking block 17 is fixedly connected to the third spring 16. The end of the locking block 17 away from the second limiting slide plate 19 slides to the outside of the limiting slide groove 18 and engages with the locking groove 8. The end of the third spring 16 away from the second limiting slide plate 19 is fixedly connected to the inside of the limiting slide groove 18. The third spring 16 is located inside the limiting slide groove 18.
[0034] Furthermore, when using this device, to open the appliance cabinet door 2, first press the electronic combination lock 4, enter the correct password, and unlock the electronic combination lock 4. Then, manually press the pressing block 10. The pressing block 10 drives the third limiting slide plate 21 to slide within the limiting slide groove 2 9, compressing the first spring 12. At the same time, the insert block 11 disengages from the slot 20 of the annular positioning block 5. At this time, pull the handle 3 out of the annular positioning block 5. When the handle 3 is pulled, it will drive the first limiting slide plate 15 to slide within the limiting slide groove 1 6 and compress the first spring 12. When the second spring 14 is compressed, the handle 3 will drive the rotating plate 7 to move through the connecting column 13. The locking block 17 on the rotating plate 7 will retract into the inner limiting slide groove 3 18 under the pressure of its inclined surface and the locking groove 8. When the locking block 17 retracts, it will drive the second limiting slide plate 19 to slide in the limiting slide groove 3 18 and compress the third spring 16 at the same time. Then, when the locking block 17 is disengaged from the locking groove 8, it will be easier to open the cabinet door 2. When the cabinet door 2 is closed, it can be operated in the opposite direction, and the locking block 17 can be pressed into the limiting slide groove 3 18.
[0035] Because the length of the locking block 17 is long enough, when the cabinet door 2 is opened directly without sliding the handle 3, the locking block 17 will be tilted and locked into the abutting slot 8, making it difficult to open. The cabinet door 2 can only be opened by sliding the handle 3. The pressing block 10 is flush with the inside surface of the cabinet door 2 and is hidden.
[0036] This device, through the cooperation of electronic combination lock 4 and hidden mechanical locking structure, enables electronic combination lock 4 to provide basic electronic protection to prevent unauthorized entry, while the dual mechanical locking of block 17 and slot 8, and plug 11 and slot 20, forms a physical layer of reinforced defense. The length design of block 17 ensures that it is tightly engaged with slot 8 when handle 3 is not operated, making it impossible to force open in an unauthorized state. This achieves the complementarity of electronic and mechanical protection, filling the security gaps of single protection.
[0037] Structural Description: Electrical Cabinet Body 1: Serves as the main support for electrical equipment, used to install and accommodate various electrical components, wiring, etc.;
[0038] Cabinet door 2: Hinged to one side of the electrical cabinet body 1, used to close the electrical cabinet body 1, and to protect the internal electrical components, prevent foreign objects from entering and personnel from accidentally touching it;
[0039] Handle 3: It is slidably connected in the annular positioning block 5. By operating the handle 3, the connecting column 13 and other components are moved to realize the opening and closing operation of the cabinet door 2.
[0040] Electronic combination lock 4: Installed on cabinet door 2, it realizes electronic locking and unlocking of cabinet door 2 through password verification, providing basic electronic protection to prevent unauthorized entry. It is an existing device. For specific models, please refer to: Juexiang X6.
[0041] Circular positioning block 5: It is fixedly connected to the cabinet door 2, providing sliding installation space for the handle 3 and restricting the movement trajectory of the handle 3;
[0042] Rotating plate 7: connected to connecting column 13, moves under the drive of handle 3, and the locking block 17 on it is used to cooperate with the locking slot 8 of the electrical cabinet body 1 to achieve mechanical locking;
[0043] Pressing block 10: Used for manual operation, it drives the third limit slide plate 21 to slide, so that the insert block 11 is disengaged from the slot 20, so that the handle 3 can be operated;
[0044] Insert 11: It is inserted into the slot 20 of the annular positioning block 5 to restrict the sliding of the handle 3 and achieve auxiliary locking of the cabinet door 2;
[0045] First spring 12: provides a reset force for third limit slide plate 21, so that insert block 11 automatically inserts into slot 20 and remains locked.
[0046] Connecting column 13: connects handle 3 and rotating plate 7, transmits the motion of operating handle 3, and drives rotating plate 7 to move;
[0047] Second spring 14: provides reset force for connecting column 13 and first limiting slide plate 15, realizing the self-closing function of cabinet door 2;
[0048] First limiting slide plate 15: It is fixedly sleeved on the connecting column 13, slides in the limiting slide groove 6, restricts the movement direction of the connecting column 13, and cooperates with the second spring 14 at the same time.
[0049] The third spring 16 provides a reset force for the second limit slide plate 19 and the locking block 17, so that the locking block 17 automatically engages into the slot 8 to achieve mechanical locking.
[0050] Block 17: It engages with slot 8 to mechanically lock cabinet door 2. Its length design increases the difficulty of forcibly opening it.
[0051] Second limiting slide plate 19: slides within limiting slide groove three 18, drives the locking block 17 to move, and cooperates with the third spring 16 to realize the extension and retraction of the locking block 17;
[0052] The third limiting slide plate 21 slides within the limiting slide groove 9, driving the pressing block 10 and the insert block 11 to move, thereby enabling the insert block 11 to be inserted into and disengaged from the slot 20.
[0053] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. An anti-pry and self-closing protection device for an appliance cabinet door lock, characterized in that, include: The appliance cabinet body (1) and cabinet door (2) are hinged to one side of the appliance cabinet body (1) and an electronic combination lock (4) is installed on the cabinet door (2). The self-closing protection structure is located on the cabinet door (2); The self-closing protection structure includes a handle (3), an annular positioning block (5), a connecting column (13) and a rotating plate (7). The annular positioning block (5) is fixedly connected to the side of the cabinet door (2) away from the appliance cabinet body (1). The handle (3) is slidably connected to the inside of the annular positioning block (5). A limit groove (6) is opened inside the cabinet door (2). Among them, the connecting column (13) is fixedly connected to the end of the handle (3) near the cabinet door (2), and the end of the connecting column (13) away from the handle (3) passes through the interior of the limiting slide groove one (6) and is fixedly connected to the rotating plate (7). The rotating plate (7) has a limiting slide groove three (18) on one side, and a limiting slide groove two (9) is opened inside the handle (3). Among them, the annular positioning block (5) has a slot (20) inside, the inner wall of the electrical cabinet body (1) has a slot (8) on one side, the outer surface of the connecting column (13) is fixedly sleeved with a first limiting slide plate (15), the first limiting slide plate (15) is slidably connected to the inside of the limiting slide groove (6), and the outer surface of the connecting column (13) is sleeved with a second spring (14).
2. The anti-pry and self-closing protection device for an electrical cabinet door lock according to claim 1, characterized in that: The self-closing protection structure also includes an insert block (11), a first spring (12), a pressing block (10), and a third limiting slide plate (21). The third limiting slide plate (21) is slidably connected inside the limiting slide groove (9), and the pressing block (10) and the insert block (11) are both fixedly connected to one side of the third limiting slide plate (21). Among them, the ends of the pressing block (10) and the insert block (11) away from the third limiting slide plate (21) both slide to the outside of the limiting slide groove two (9), the insert block (11) is inserted into the slot (20), the first spring (12) is fixedly connected to the side of the third limiting slide plate (21) away from the pressing block (10), and the end of the first spring (12) away from the third limiting slide plate (21) is fixedly connected to the inside of the limiting slide groove two (9); Among them, the inner sliding connection of the limiting slide groove three (18) is a second limiting slide plate (19), a locking block (17) is fixedly connected to one side of the second limiting slide plate (19), and a third spring (16) is fixedly connected to the side of the second limiting slide plate (19) away from the locking block (17).
3. The anti-pry and self-closing protection device for an electrical cabinet door lock according to claim 2, characterized in that: The end of the locking block (17) away from the second limiting slide plate (19) slides to the outside of the limiting slide groove three (18), and the locking block (17) engages with the locking groove (8).
4. The anti-pry and self-closing protection device for an electrical cabinet door lock according to claim 2, characterized in that: The end of the third spring (16) away from the second limiting slide plate (19) is fixedly connected to the inside of the limiting slide groove three (18), and the third spring (16) is located inside the limiting slide groove three (18).
5. The anti-pry and self-closing protection device for an appliance cabinet door lock according to claim 1, characterized in that: The limiting slide groove 2 (9) has a "U" shaped structure.
6. The anti-pry and self-closing protection device for an electrical cabinet door lock according to claim 1, characterized in that: One end of the second spring (14) is fixedly connected to the first limiting slide plate (15), and the end of the second spring (14) away from the first limiting slide plate (15) is fixedly connected to the inside of the limiting slide groove (6).