Plug-in wiring structure of an electric leakage protector

Abstract

This utility model discloses a pluggable wiring structure for a residual current device (RCD), relating to the field of RCD wiring technology. It includes a female connector with several sockets on top and a male connector with several columnar pins on the bottom. The female connector is positioned at the input and output terminals of the RCD and electrically connects to it. The male connector has spaced positioning protrusions on both sides of its terminal portion. A barrier is provided on one side of the top of the female connector, with a comb-like groove on the inner wall of the barrier. A skirt surrounds the pins on the bottom of the male connector, and a receiving groove adapted to the skirt is provided on the top of the female connector. An operator connects the cables to the pins of the male connector, and the barrier restricts the entry of the male connector. The operator only needs to push the male connector to engage with the female connector to complete the connection of all cables to the RCD, simplifying the operation while ensuring that all cables are independent and do not directly contact each other, but are connected to the same RCD.

Description

Technical Field

[0001] This utility model relates to the field of wiring technology for residual current devices (RCDs), and in particular to a plug-in wiring structure for an RCD. Background Technology

[0002] Residual current devices (RCDs) are mainly used to automatically cut off the power supply when equipment experiences faults such as leakage current, providing overload and short-circuit protection to protect personal and equipment safety.

[0003] However, some large equipment or complex equipment composed of multiple components may have multiple cables at the same time. Each cable belongs to a different independent structure in the overall equipment. Operators usually choose to use multiple residual current devices to connect multiple cables. This approach may encounter coordination problems, such as: Different parts of the equipment are electrically connected, and multiple independent residual current devices (RCDs) may struggle to coordinate their operation. A leakage in one part of the equipment could affect the normal operation of other parts, in which case an independent RCD might not respond promptly or accurately. It may also affect power supply reliability, as each RCD is connected to a different power circuit. A fault in one circuit could cause partial malfunction of the equipment while other functions continue to operate normally, creating a greater safety hazard. Furthermore, it may lead to difficulties in isolating faults, such as: when an RCD trips, it may be difficult to determine which part of the wiring is faulty, especially in complex equipment structures.

[0004] To avoid the aforementioned situation, operators will connect the electrical cores inside the cable together to form a single line and connect it to the leakage current protection device. The integration methods include, but are not limited to, using wire lugs, soldering, and twisting. These methods will increase the difficulty of subsequent inspection and maintenance. Furthermore, if one of the wires in this single line needs to be replaced or removed and cannot be effectively separated, the operator will choose to cut the wire bundle. Over time, this may result in the cable being too short to be used properly, and the tangled wire bundle also poses certain safety hazards. Utility Model Content

[0005] To address the aforementioned problems, the purpose of this utility model is to provide a pluggable wiring structure for a residual current device (RCD), thereby solving the problem of difficult maintenance and repair after multiple cables of complex equipment are connected to the same RCD.

[0006] The technical solution of this utility model is as follows: a pluggable wiring structure for a residual current device (RCD), including a female connector with several sockets on the top and a male connector with several columnar pins on the bottom. The female connector is located at the input and output terminals of the RCD and is electrically connected to the RCD. The male connector has spaced positioning protrusions on both sides of the terminal portion. The female connector has a barrier on one side of the top, with openings on the top and one side. The inner wall of the barrier has a comb-shaped groove. The horizontal part of the comb-shaped groove passes through the barrier through the side opening. The male connector enters along the side opening of the barrier, causing the positioning protrusions to move along the horizontal part of the comb-shaped groove until the male connector is fully inserted into the barrier. The positioning protrusions align with the vertical part of the comb-shaped groove and move downward to plug into the female connector. The bottom of the male connector has a skirt surrounding the pins, and the top of the female connector has a receiving groove that matches the skirt, forming a blocking area between the male and female connectors to separate the external environment from the pins.

[0007] Furthermore, the enclosure is made of rubber material, with the inner wall of the enclosure flush with the female head shell, and the outer wall having an upward slope so that the thickness on the top side of the enclosure is greater than that on the bottom side, ensuring that the bottom of the enclosure has a certain degree of flexibility and preventing the enclosure from blocking the cable and affecting the cable distribution.

[0008] Furthermore, the connection between the horizontal and vertical portions of the comb groove and the two openings of the horizontal portion of the comb groove are provided with smooth chamfers, so that the male head can move better within the comb groove.

[0009] Furthermore, the height of the enclosure is the same as the height of the terminal portion of the male connector.

[0010] Furthermore, the bottom edge of the male connector is provided with an inclined chamfer, and the top surface of the female connector is provided with a stepped recess that matches the inclined chamfer of the male connector. The pin ends of the male connector are tapered, making it easier for the male connector to fit with the female connector.

[0011] Furthermore, the positioning protrusion is made of flexible rubber, and there is an interference fit between the positioning protrusion and the comb-shaped groove.

[0012] Furthermore, the positioning protrusion is one of the following: hemispherical, rectangular, conical, or elliptical.

[0013] The beneficial effects of this utility model are as follows: 1. This utility model first requires the operator to connect the cable to the pins of the male connector, and then set up a barrier on the outside of the female connector to restrict the entry of the male connector. After the male connector enters the barrier through the comb-shaped groove, it naturally aligns with the female connector. The operator only needs to push the male connector to fit with the female connector to complete the connection of all cables to the residual current device. This simplifies the operation steps while ensuring that all cables are independent and do not directly contact each other, but are connected to the same residual current device.

[0014] 2. This utility model integrates all cables into a female connector via a male connector, and the female connector integrates all cables into a single connection to the residual current device (RCD), replacing the direct connection between the cables and the RCD. This avoids situations where cables are interconnected but one individual cable is not directly connected to the RCD, thus preventing situations where the RCD cannot respond promptly to equipment failures and reducing the risk of mutual interference during equipment failures.

[0015] 3. This utility model allows operators to quickly locate the male connector by setting up a barrier around the female connector, and guides the male connector to move through a comb-like groove, enabling quick assembly and disassembly between the male and female connectors. Even if the leakage protection device is installed in a power distribution device with limited operating space, operators can quickly perform the connection operation, further simplifying the operation steps. At the same time, after the male and female connectors are mated, the pin positions are completely covered, preventing external factors from affecting the cable connection end. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the female head structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the male connector structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the male head entering the comb-shaped groove structure of this utility model.

[0020] Figure 5 This is a flowchart illustrating the fitting process of the male and female connectors of this utility model.

[0021] Figure 6 This is a schematic diagram of the positioning protrusion structure of this utility model.

[0022] Reference numerals: 1. Female head; 2. Male head; 3. Positioning protrusion; 4. Enclosure; 5. Comb groove; 6. Skirt. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1, such as Figure 1-5As shown, a pluggable wiring structure for a residual current device (RCD) includes a female connector 1 with several sockets on the top and a male connector 2 with several columnar pins on the bottom. The bottom edge of the male connector 2 has an inclined chamfer. The top surface of the female connector 1 has a stepped recess that matches the inclined chamfer of the male connector 2. The pin ends of the male connector 2 are tapered, making it easier for the male connector 2 to fit with the female connector 1. The female connector 1 is located at the input and output terminals of the RCD and is electrically connected to the RCD. The terminals of the male connector 2 have spaced positioning protrusions 3 on both sides. The positioning protrusions 3 are made of flexible rubber and are interference-fitted with comb-shaped grooves 5. A retainer 4 is provided on one side of the top of the female connector 1. The retainer 4 is made of rubber material. The inner wall of the retainer 4 is flush with the shell of the female connector 1, and the outer wall has an inclined slope from bottom to top, so that the thickness of the top side of the retainer 4 is greater than that of the bottom side, ensuring that the bottom of the retainer 4 has a certain degree of flexibility and avoiding the retainer 4 from blocking the cable and affecting the cable distribution. The height of the retainer 4 is the same as the height of the terminal part of the male connector 2. The top and one side openings of the enclosure 4 are provided. The inner wall of the enclosure 4 is provided with a comb-shaped groove 5. The horizontal part of the comb-shaped groove 5 passes through the side opening of the enclosure 4. The connection between the horizontal and vertical parts of the comb-shaped groove 5 and the two openings of the horizontal part of the comb-shaped groove 5 are provided with smooth chamfers so that the male head 2 can move better in the comb-shaped groove 5. The male connector 2 enters along the side opening of the enclosure 4, causing the positioning protrusion 3 to move along the horizontal part of the comb groove 5 until the male connector 2 is fully inserted into the enclosure 4. The positioning protrusion 3 aligns with the vertical part of the comb groove 5 and moves downward to insert the female connector 1. The bottom of the male connector 2 is provided with a skirt 6 surrounding the pin, and the top of the female connector 1 is provided with a receiving groove that matches the skirt 6, so that a blocking area is formed between the male connector 2 and the female connector 1, separating the external environment from the pin.

[0025] The working principle of this utility model is as follows: First, the operator connects the cable to the male connector 2, so that the cable and the pins of the male connector 2 are connected. Then, the operator holds the male connector 2 and aligns it with the opening end of the enclosure 4 and pushes the male connector 2 so that it enters the comb groove 5. After the male connector 2 moves to the end of the horizontal part of the comb groove 5, the operator pushes the male connector 2 vertically so that it moves along the vertical part of the comb groove 5. During the movement, the skirt 6 at the bottom of the male connector 2 and the pins are gradually inserted into the female connector 1 until the male connector 2 and the female connector 1 are completely fitted and connected. At this time, several cables are integrated through the male connector 2, and the connection between the cable and the leakage current protection device is achieved by connecting the male connector 2 to the female connector 1. If one of the multiple cables fails during subsequent use, the leakage current protection device can quickly react and block the circuit of all cables without affecting or impacting other cables. The operator can repeat the above operation to remove male connector 2, and then use the detection device's sensing pin to determine the faulty line. Based on the determination result, the corresponding line equipment can be repaired. When it is necessary to add or replace the line, simply perform the corresponding operation in male connector 2 and then reconnect male connector 2 and female connector 1.

[0026] Example 2, as Figure 6 As shown, the only difference from Embodiment 1 is that the positioning protrusion 3 is one of the following: hemispherical, rectangular, conical, and elliptical protrusions. Different shapes of positioning protrusions 3 can make the male head 2 slide and move in the comb groove 5 to obtain different movement effects, so that the operator can choose according to the actual use.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pluggable wiring structure for a residual current device (RCD), comprising a female connector (1) with several sockets on the top and a male connector (2) with several columnar pins on the bottom, wherein the female connector (1) is disposed at the input and output terminals of the RCD and electrically connected to the RCD, characterized in that: The male connector (2) has positioning protrusions (3) spaced apart on both sides of the terminal portion. The female connector (1) has a barrier (4) on one side of the top. The barrier (4) has an opening on the top and one side. The inner wall of the barrier (4) has a comb-shaped groove (5). The horizontal part of the comb-shaped groove (5) passes through the barrier (4) through the side opening of the barrier (4). The male connector (2) enters along the side opening of the barrier (4) so ​​that the positioning protrusions (3) move along the horizontal part of the comb-shaped groove (5) until the male connector (2) is completely inside the barrier (4). The positioning protrusions (3) align with the vertical part of the comb-shaped groove (5) and move downward to insert the female connector (1). The bottom of the male connector (2) has a skirt (6) surrounding the pin. The top of the female connector (1) has a receiving groove that matches the skirt (6).

2. The pluggable wiring structure of a residual current device according to claim 1, characterized in that: The enclosure (4) is made of rubber material. The inner wall of the enclosure (4) is flush with the shell of the mother head (1), and the outer wall is provided with an inclined slope from bottom to top so that the thickness of the top side of the enclosure (4) is greater than that of the bottom side.

3. The pluggable wiring structure of a residual current device according to claim 1, characterized in that: The horizontal and vertical parts of the comb groove (5) are connected by smooth chamfers, as are the two openings of the horizontal part of the comb groove (5).

4. The pluggable wiring structure of a residual current device according to claim 1, characterized in that: The height of the enclosure (4) is the same as the height of the terminal portion of the male connector (2).

5. The pluggable wiring structure of a residual current device according to claim 1, characterized in that: The male connector (2) has a chamfered bottom edge, and the female connector (1) has a stepped recess on its top surface that matches the chamfered edge of the male connector (2). The pin ends of the male connector (2) are tapered.

6. The pluggable wiring structure of a residual current device according to claim 1, characterized in that: The positioning protrusion (3) is made of flexible rubber, and the positioning protrusion (3) and the comb groove (5) are interference fit.

7. The pluggable wiring structure of a residual current device according to claim 6, characterized in that: The positioning protrusion (3) is one of the following: hemispherical, rectangular, conical, or elliptical protrusion.

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