A building electrical leakage protection device
By designing a fixing and clamping structure in the leakage current protection device, and utilizing the cooperation of the lead screw and clamping plate, the problems of cumbersome installation and insufficient applicability of existing devices are solved. This enables rapid installation and adaptability to mounting brackets of different sizes, thereby improving the practicality and applicability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG HUAKE PLANNING & ARCHITECTURAL DESIGN CO LTD
- Filing Date
- 2025-08-27
- Publication Date
- 2026-07-24
AI Technical Summary
Existing leakage current protection devices require loosening or tightening multiple bolts one by one during installation and replacement, which makes the operation cumbersome. They can only be installed on mounting brackets of fixed sizes, which reduces the practicality and applicability of the equipment.
The device employs a fixing and clamping structure on the housing. By rotating a lead screw, the connecting plate and clamping plate are driven to clamp the wires, simplifying the installation process. The adjustable clamping plate can accommodate mounting brackets of different sizes, enabling quick installation and replacement.
The installation and replacement process of the equipment has been simplified, the practicality and applicability of the equipment have been improved, and it can be installed on mounting racks of different sizes, thus enhancing the convenience and flexibility of operation.
Smart Images

Figure CN224554299U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of leakage current protection devices; more specifically, it relates to a building electrical leakage current protection device. Background Technology
[0002] A residual current device (RCD) is a grounding protection device used to prevent electric shock and accidents caused by leakage current. When the leakage current of a circuit or electrical equipment exceeds the device's setting value, or when a person or animal is in danger of electric shock, it can quickly act to cut off the power supply, prevent the accident from escalating, and ensure the safety of people and equipment.
[0003] Currently, existing leakage current protection devices often employ a separate, wire-by-wire wiring design, relying on multiple bolts for fixation. This necessitates tightening or loosening these bolts individually during installation and replacement, making the process cumbersome and reducing the device's practicality. Furthermore, most existing devices can only be installed on fixed-size mounting brackets, while the mounting brackets inside existing distribution boxes are often of variable dimensions. This necessitates replacing the mounting brackets with fixed-size ones, further reducing the device's applicability. Therefore, there is an urgent need for a building electrical leakage current protection device to address these issues. Utility Model Content
[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a building electrical leakage protection device to solve the problems existing in the background art.
[0005] This utility model provides the following technical solution: a building electrical leakage protection device, comprising:
[0006] The box body has a fixing structure on both the upper and lower surfaces, and a clamping structure on one side surface of the box body; the fixing structure includes a connecting block, which is fixedly connected to the surface of the other side of the box body; the clamping structure includes a fixing block, which is fixedly connected to the middle position of the outer surface of one side of the box body.
[0007] Preferably, a switch is installed inside one side surface of the connecting block, and the outer surfaces of the upper and lower ends of the box are provided with connection ports, and there are multiple sets of connection ports. The inner wall surface of one side of each of the multiple sets of connection ports is fixedly connected with a first clamping block. The inner surface of the other side surface of the two sets of connection ports at the middle position of the upper and lower ends is threaded with a first lead screw, and the outer surface of one end of the first lead screw is bearing connected with a connecting plate. The surfaces of both ends of one side of the connecting plate are fixedly connected with a connecting rod. The first lead screw is bearing connected with a second clamping block, and the connecting rod is fixedly connected with a third clamping block. This design drives the connecting plate to move closer to the surface of the other side of the connection port by rotating the first lead screw.
[0008] Preferably, the inner surface of the other side of the connection port at both ends of the box body is provided with a through groove, and the radius of the through groove is adapted to the radius of the connecting rod. This design makes the connecting rod more stable when moving inside the through groove.
[0009] Preferably, the surfaces of the first, second, and third abutting blocks that are close to each other are all provided with a serrated design, and the positions of the second and third abutting blocks correspond to the position of the first abutting block. This design can clamp the wire through the serrated design.
[0010] Preferably, a second lead screw is connected to the bearing at the middle position inside the fixing block, and a clamping plate is sleeved on the outer surface of both the upper and lower ends of the second lead screw. The clamping plate is an L-shaped clamping block. Guide rods are fixedly connected to the surfaces of both the upper and lower ends of the fixing block. Circular holes are opened inside the outer surfaces of both ends of the two sets of clamping plates. This design allows the equipment to be clamped on the mounting frame through the clamping plates.
[0011] Preferably, the threads on the outer surfaces of the upper and lower ends of the second lead screw are designed with positive and negative teeth, and the upper and lower ends of the second lead screw are fixedly connected with limit rings. The positions of the multiple sets of guide rods correspond to the positions of the multiple sets of circular holes, and the radius of the guide rods is adapted to the radius of the circular holes. This design can drive the two sets of clamping plates to move closer to each other or further apart by rotating the second lead screw.
[0012] The technical effects and advantages of this utility model are as follows: By inserting wires such as live wires, neutral wires, ground wires, and control wires into the corresponding connection ports as required, rotating the first lead screw drives the connecting plate to move closer to the surface on the other side of the connection port, and then the movement of the first lead screw and the connecting rod drives the second and third clamping blocks to move inside the connection port. Subsequently, the wires are clamped by the cooperation of the second and third clamping blocks with the first clamping block. This eliminates the need to loosen or tighten multiple bolts one by one during equipment installation and replacement, thereby simplifying the operation process and improving the practicality of the equipment to a certain extent.
[0013] By rotating the second lead screw, the two sets of clamping plates can be moved away from each other to accommodate different mounting bracket sizes. By rotating the second lead screw in the opposite direction, the two sets of clamping plates can be brought closer together. At this time, the box can be clamped onto the mounting bracket through the cooperation of the two sets of clamping plates. This allows for adjustment according to the size of the mounting bracket inside the distribution box, enabling the equipment to be installed on mounting brackets of different sizes. This improves the applicability of the equipment to a certain extent. Moreover, its overall structure is simple and reasonable in design, highly practical, and easy to promote and apply. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0015] Figure 2 This is an exploded three-dimensional diagram of the fixed structure of this utility model.
[0016] Figure 3 This is an exploded three-dimensional structural diagram of the clamping structure of this utility model.
[0017] Figure 4 This is a schematic diagram of the usage state of this utility model.
[0018] The attached figures are labeled as follows: 1. Box body; 2. Fixing structure; 21. Connecting block; 22. Switch; 23. Connection port; 24. First abutting block; 25. First lead screw; 26. Connecting plate; 27. Connecting rod; 28. Second abutting block; 29. Third abutting block; 3. Clamping structure; 31. Fixing block; 32. Second lead screw; 33. Clamping plate; 34. Guide rod. Detailed Implementation
[0019] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The leakage protection device involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0020] Example 1, as Figure 1 and Figure 2 As shown, this embodiment proposes a building electrical leakage protection device, including:
[0021] Box 1, with fixing structures 2 on both the upper and lower surfaces of box 1, and clamping structures 3 on one side of box 1.
[0022] The fixing structure 2 includes a connecting block 21, and the connecting block 21 is fixedly connected to the surface of one end of the other side of the box body 1;
[0023] A switch 22 is installed inside one side surface of the connecting block 21. The outer surfaces of the upper and lower ends of the box 1 are provided with connection ports 23, and there are multiple sets of connection ports 23. The inner wall surface of one side of each set of connection ports 23 is fixedly connected with a first abutting block 24. The inner surface of the other side surface of the two sets of connection ports 23 at the middle position of the upper and lower ends of the multiple sets of connection ports 23 is threaded with a first lead screw 25. The outer surface of one end of the first lead screw 25 is bearing connected with a connecting plate 26. The surfaces of both ends of one side of the connecting plate 26 are fixedly connected with a connecting rod 27. One end of the first lead screw 25 is bearing connected with a second abutting block 28. One end of the connecting rod 27 is fixedly connected with a third abutting block 29.
[0024] The inner surface of the other side of the connecting port 23 at both ends of the upper and lower ends of the box body 1 is provided with through grooves, and the radius of the through grooves is adapted to the radius of the connecting rod 27.
[0025] The surfaces of the first abutting block 24, the second abutting block 28, and the third abutting block 29 that are close to each other are all provided with a serrated design, and the positions of the second abutting block 28 and the third abutting block 29 correspond to the positions of the first abutting block 24.
[0026] In this embodiment, the design rotates the first lead screw 25 to drive the connecting plate 26 closer to the surface of the other side of the connection port 23. When the connecting plate 26 moves, it simultaneously drives the two sets of connecting rods 27 and the third clamping block 29 to move inside the connection ports 23 at both ends of the multiple sets of connection ports 23. When the first lead screw 25 moves, it simultaneously drives the second clamping block 28 to move inside the middle set of connection ports 23 of the multiple sets of connection ports 23. Furthermore, the design can clamp the wire through the cooperation of the first clamping block 24, the second clamping block 28, and the third clamping block 29.
[0027] The first lead screw 25 in this application, as well as all movable parts, require regular cleaning and maintenance, including but not limited to dust removal and lubrication.
[0028] Example 2, as Figure 3 and Figure 4 As shown, based on the same concept as the above embodiments, this embodiment also proposes:
[0029] The clamping structure 3 includes a fixing block 31, and the fixing block 31 is fixedly connected to the middle position of one side of the outer surface of the box body 1;
[0030] The second lead screw 32 is connected to the bearing at the middle position inside the fixed block 31, and the outer surfaces of the upper and lower ends of the second lead screw 32 are fitted with clamping plates 33, and the clamping plates 33 are set as L-shaped blocks. The surfaces of the upper and lower ends of the fixed block 31 are fixedly connected with guide rods 34, and the inner surfaces of the outer surfaces at both ends of the two sets of clamping plates 33 are provided with round holes.
[0031] The threads on the outer surfaces of the upper and lower ends of the second lead screw 32 are designed with positive and negative threads, and the upper and lower ends of the second lead screw 32 are fixedly connected with limit rings. The positions of multiple sets of guide rods 34 correspond to the positions of multiple sets of circular holes, and the radius of the guide rods 34 is matched with the radius of the circular holes.
[0032] In this embodiment, the design allows the rotation of the second lead screw 32 to drive the two sets of clamping plates 33 to move closer or further apart. At the same time, the limit rings fixedly connected to the upper and lower parts of the second lead screw 32 prevent the two sets of clamping plates 33 from detaching from the outer surface of the second lead screw 32 during movement. Furthermore, this design allows multiple sets of guide rods 34 to be inserted into the round hole, making the clamping plates 33 more stable during movement and preventing them from deflecting.
[0033] Working principle: When the equipment is in use, firstly, rotating the second lead screw 32 causes the two sets of clamping plates 33 to move away from each other. At the same time, the cooperation of the guide rod 34 and the round hole ensures that the clamping plates 33 will not deflect during movement. At this time, the box 1 can be clamped onto the mounting bracket of different sizes according to the cooperation of the two sets of clamping plates 33. Then, wires such as live wire, neutral wire, ground wire, and control wire can be inserted into the corresponding connection port 23 as required. Subsequently, rotating the first lead screw 25 causes the connecting plate 26 and the connecting rod 27 to move, and causes the second clamping block 28 and the third clamping block 29 to move synchronously inside the connection port 23. At this time, the serrated design of the first clamping block 24, the second clamping block 28, and the third clamping block 29 close to each other clamps the wires, thereby avoiding the need to loosen or tighten multiple bolts one by one when installing or replacing the equipment. The above is the complete working principle of this utility model.
[0034] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0035] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0036] In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A building electrical leakage protection device, characterized in that, include: Box body (1), the upper and lower surfaces of the box body (1) are provided with fixing structures (2), and one side of the box body (1) is provided with a clamping structure (3). The fixing structure (2) includes a connecting block (21), and the connecting block (21) is fixedly connected to the surface of one end of the other side of the box body (1); The clamping structure (3) includes a fixing block (31), and the fixing block (31) is fixedly connected to the middle position of the outer surface of one side of the box body (1).
2. The building electrical leakage protection device according to claim 1, characterized in that: A switch (22) is installed inside one side surface of the connecting block (21). The outer surfaces of the upper and lower ends of the box (1) are provided with connection ports (23), and there are multiple sets of connection ports (23). The inner wall surface of one side of each set of connection ports (23) is fixedly connected with a first abutting block (24). The inner surface of the other side surface of the two sets of connection ports (23) at the middle position of the upper and lower ends of the multiple sets of connection ports (23) is threaded with a first screw rod (25). The outer surface of one end of the first screw rod (25) is bearing connected with a connecting plate (26). The surfaces of both ends of one side of the connecting plate (26) are fixedly connected with a connecting rod (27). The first screw rod (25) is bearing connected with a second abutting block (28). The connecting rod (27) is fixedly connected with a third abutting block (29).
3. A building electrical leakage protection device according to claim 2, characterized in that: The box body (1) has through grooves on the other side of the connecting ports (23) at both ends, and the radius of the through grooves is matched with the radius of the connecting rod (27).
4. A building electrical leakage protection device according to claim 2, characterized in that: The first abutting block (24) and the second abutting block (28) and the third abutting block (29) have a serrated design on the side surface that is close to each other, and the positions of the second abutting block (28) and the third abutting block (29) correspond to the positions of the first abutting block (24).
5. A building electrical leakage protection device according to claim 1, characterized in that: The second lead screw (32) is connected to the bearing at the middle position inside the fixed block (31), and the outer surfaces of the upper and lower ends of the second lead screw (32) are fitted with clamping plates (33), and the clamping plates (33) are designed as L-shaped blocks. The surfaces of the upper and lower ends of the fixed block (31) are fixedly connected with guide rods (34), and the inner surfaces of the outer surfaces of the two sets of clamping plates (33) are provided with round holes.
6. A building electrical leakage protection device according to claim 5, characterized in that: The threads on the outer surfaces of the upper and lower ends of the second lead screw (32) are designed with positive and negative threads, and the upper and lower ends of the second lead screw (32) are fixedly connected with limit rings. The positions of the multiple sets of guide rods (34) correspond to the positions of the multiple sets of circular holes, and the radius of the guide rods (34) is adapted to the radius of the circular holes.