Feed switch convenient for wiring

Abstract

The utility model relates to the technical field of feed switches, and discloses a feed switch convenient for wiring, which comprises a box body, a circuit breaker is arranged in the box body, the top of the box body is provided with a wiring cavity communicated with the box body, two sides of the wiring cavity are respectively provided with a wire inlet end connector and a wire outlet end connector, and the wire inlet end connector is connected with the wire outlet end connector. Two adapter plates are installed in the wiring cavity, three wiring bolts are installed on the adapter plates, cables are installed in the wire inlet end connector and are connected to the peripheries of the three wiring bolts of one adapter plate in a sleeved mode, cables are installed in the wire outlet end connector and are connected to the peripheries of the three wiring bolts of the other adapter plate in a sleeved mode, and the three wiring bolts of the other adapter plate are connected to the wire outlet end connector in a sleeved mode. The three wiring bolts on the adapter plate are all electrically connected with the circuit breaker, the fixing nuts are installed at the ends of the wiring bolts, and the cable is connected to the wiring bolts of the adapter plate in a sleeving mode, so that interference of external force on cable connection is reduced, the reliability of electrical connection is improved, and the stability of current transmission is ensured.

Description

Technical Field

[0001] This application relates to the field of power supply switch technology, and in particular to a power supply switch that is easy to wire. Background Technology

[0002] Feeder switches are typically used in special working environments such as underground coal mines, where flammable and explosive substances such as gas and dust are present. If the electrical performance or mechanical structure of the feeder switch malfunctions, it may generate electrical sparks. Therefore, feeder switches must be regularly inspected to promptly identify and address these potential safety hazards, ensuring reliable operation of the switch in harsh environments and guaranteeing the safety of the power supply system.

[0003] For example, the explosion-proof and intrinsically safe variable frequency speed control device for mining, authorized by CN203445771U, has two sets of fork-type terminals installed in the wiring cavity. The two sets of fork-type terminals are connected to the power input terminal and the switch input terminal cables, respectively. However, in actual use, the lighting in coal mines is dim, and workers are very likely to trip over the cables while walking. When the cable is subjected to a large pulling force, the connection between the cable and the terminal is very likely to break. Once the connection between the cable and the terminal breaks, the vacuum feeder switch will not be able to work properly, which will increase the number of maintenance times. At the same time, the wiring method between the terminal and the cable is relatively cumbersome, and attention must be paid to the distance of the cable on the terminal, thus reducing the efficiency of maintenance personnel in connecting the cable and the terminal. Utility Model Content

[0004] To facilitate the inspection and maintenance of the power supply switch, a power supply switch that is easy to wire is provided.

[0005] The above-mentioned objective of this application is achieved through the following technical solution:

[0006] A power supply switch for easy wiring includes a housing containing a circuit breaker. A wiring cavity communicating with the housing is located on the top of the housing. An inlet connector and an outlet connector are respectively installed on both sides of the wiring cavity. Two adapter plates are installed inside the wiring cavity, and three wiring bolts are installed on each adapter plate. Cables are installed inside the inlet connectors and are respectively fitted around the three wiring bolts on one adapter plate. Cables are installed inside the outlet connectors and are respectively fitted around the three wiring bolts on the other adapter plate. The three wiring bolts on the adapter plates are electrically connected to the circuit breaker, and a fixing nut is installed at the end of each wiring bolt.

[0007] By adopting the above technical solution, in the traditional wiring method, the cable is directly connected to the fork-type terminal block, which can lead to loosening due to external forces such as vibration and pulling. By adding an adapter plate, the cable is first connected to the terminal bolt on the adapter plate, and then connected to the circuit breaker through the adapter plate. The cable is sleeved on the outer circumference of the terminal bolt. This connection method can better resist external forces, reduce problems such as loosening and poor contact caused by external forces, improve the reliability of electrical connections, and ensure the stability of current transmission. At the same time, the existence of the adapter plate makes the installation and disassembly of the cable more convenient and quick. The operator only needs to connect the cable to the terminal bolt on the adapter plate and tighten it with the fixing nut. In the limited space of the wiring cavity, the efficiency of installation and disassembly can be improved.

[0008] Optionally, a connecting piece is fixed to the end of the cable that connects to the wiring bolt.

[0009] By adopting the above technical solution, a connecting piece is fixed on the end of the cable, which allows the end of the cable to be easily connected to the wiring bolt, simplifying the wiring process. At the same time, by fitting the connecting piece at the end of the cable onto the wiring bolt, the cable can be fixed to the wiring bolt, preventing the connection between the cable and the wiring bolt from being broken when the cable is pulled by external force.

[0010] Optionally, multiple fixing blocks are fixed on the adapter plate, and the wiring bolts are respectively located between adjacent fixing blocks.

[0011] By adopting the above technical solution, the fixing blocks set between adjacent wiring bolts can separate the wiring bolts, thereby increasing the creepage distance between adjacent wiring bolts, reducing electromagnetic interference between adjacent wiring bolts, and improving the stability during operation.

[0012] Optionally, the adapter plate has a fixing groove and a fixing hole that communicates with the fixing groove. The groove direction and the fixing hole direction are perpendicular. The stud end of the wiring bolt passes through the fixing hole, and the nut end of the wiring bolt engages with the fixing groove. A fixing plate is also installed on the side of the adapter plate facing away from the wiring bolt.

[0013] By adopting the above technical solution, when the operator connects the cable to the wiring bolt of the adapter plate, the inner wall of the fixing groove will lock the nut end of the wiring bolt, preventing the wiring bolt from rotating in the circumferential direction. Thus, the operator only needs to rotate the fixing nut to tighten it, which improves the efficiency of disassembly and assembly between the cable and the adapter plate.

[0014] Optionally, a limit protrusion is installed on the stud end of each of the three wiring bolts.

[0015] By adopting the above technical solution, when the cable slides past the limiting protrusion, the limiting protrusion can limit the cable in the axial direction of the wiring bolt, reducing the movement of the cable on the wiring bolt and facilitating the connection of the fixing nut.

[0016] Optionally, at least three wire clamps are installed on each side of the adapter plate, and the three wire clamps and three wiring bolts are respectively located on the same horizontal plane in the vertical direction.

[0017] By adopting the above technical solution, after the cable is connected to the wiring cavity through the inlet connector, the cable can be clamped by the fixing clamp set on the adapter plate, thereby achieving the limitation and fixation of the cable, making it less likely for the connection between the cable and the wiring bolt to break.

[0018] Optionally, a rubber pad is provided on the inner side wall of the wire clamp.

[0019] By adopting the above technical solution, when the cable is pressed into the clamp, the rubber pad can not only increase the friction between the inner wall of the clamp and the cable, further improving the reliability of the clamping, but also achieve soft contact between the cable and the inner wall of the clamp, reducing wear on the cable surface.

[0020] Optionally, the two adapter plates are parallel to each other.

[0021] By adopting the above technical solution, when the two adapter plates are relatively parallel, the electric field distribution between them is more uniform. Under high voltage conditions, the uniform electric field distribution can reduce the situation of excessively high local electric field intensity, thereby reducing the possibility of partial discharge, making the transmission of current between the adapter plate and the cable smoother, and improving the power transmission efficiency.

[0022] In summary, this application has at least the following beneficial effects:

[0023] 1. The cable is connected to the connector plate's bolts inside the wiring cavity. This connection method can better resist external forces, reduce problems such as loose connection and poor contact caused by external forces, improve the reliability of electrical connection, and ensure the stability of current transmission.

[0024] 2. The wiring bolts on the adapter plate make cable installation and removal more convenient and quick. Operators only need to put the cable onto the wiring bolts on the adapter plate and tighten it with the fixing nut. This improves the efficiency of installation and removal in the limited space of the wiring cavity.

[0025] 3. After the cable is connected to the wiring cavity through the inlet connector, the cable clamp on the adapter plate can clamp the cable, thereby limiting and fixing the cable, making the connection between the cable and the wiring bolt less prone to breakage, and better reducing the interference of external forces on the cable and wiring bolt. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a power supply switch that is easy to wire.

[0027] Figure 2 Cross-sectional view of a power supply switch for easy wiring Figure 1 ;

[0028] Figure 3 This is a schematic diagram of the adapter plate.

[0029] Figure 4 This is an exploded view of the adapter plate;

[0030] Figure 5 Cross-sectional view of a power supply switch for easy wiring Figure 2 ;

[0031] Figure 6 This is a schematic diagram of the adapter plate in Example 2.

[0032] Reference numerals: 1. Housing; 11. Circuit breaker; 12. Socket; 121. Terminal block; 2. Wiring cavity; 21. Wiring cavity; 22. Inlet connector; 23. Outlet connector; 3. Adapter plate; 31. Fixing block; 311. Insulation layer; 32. Wiring groove; 33. Wiring bolt; 331. Limiting protrusion; 34. Fixing nut; 35. Fixing groove; 36. Fixing hole; 37. Fixing plate; 38. Wire clamp; 381. Rubber pad; 4. Cable; 41. Connecting piece. Detailed Implementation

[0033] The following section provides a more detailed description, in conjunction with the accompanying diagrams:

[0034] Example 1

[0035] As attached Figure 1 As shown, a power supply switch that is easy to wire includes a housing 1 and a wiring cavity 2.

[0036] As attached Figure 2 and attached Figure 3As shown, the wiring cavity 2 is located at the top of the housing 1. The wiring cavity 2 has a wiring chamber 21 that communicates with the top of the housing 1. An inlet connector 22 and an outlet connector 23 are respectively installed on both sides of the wiring cavity 2, both communicating with the wiring cavity. The inlet connector 22 and outlet connector 23 on both sides are grouped together, with two groups in this case. A cable 4 is installed in the inlet connector 22 of the same group, with one end of the cable 4 connected to the power input terminal. A cable 4 is also installed in the outlet connector 23, with one end of the cable 4 connected to the device input terminal. The other end of the cable 4 is located in the wiring cavity 21 and is fixed with a connecting piece 41 with a through hole. The connecting piece 41 is rectangular in shape to facilitate cable 4 connection and simplify the wiring process.

[0037] The wiring cavity 21 is equipped with two adapter plates 3. The two adapter plates 3 are parallel to each other and are parallel to the inlet connector 22. Multiple fixing blocks 31 are fixed on the adapter plates 3. The fixing blocks 31 are perpendicular to the adapter plates 3. A wiring groove 32 is provided between adjacent adapter blocks.

[0038] Three wiring bolts 33 are installed on the adapter plate 3. All three bolts are located in the wiring groove 32. The cable 4 in the inlet connector 22 is respectively sleeved on the outer periphery of the three wiring bolts 33 of one adapter plate 3 through the connecting piece 41. The cable 4 in the outlet connector 23 is respectively sleeved on the outer periphery of the three wiring bolts 33 of another adapter plate 3 through the connecting piece 41. The end of the wiring bolt 33 is equipped with a fixing nut 34. The rectangular connecting piece 41 fixes the cable 4 to the wiring bolt 33, preventing the cable 4 from being disconnected from the wiring bolt 33 when the cable 4 is pulled by external force. This reduces problems such as loose connection and poor contact caused by external force, improves the reliability of electrical connection, and ensures the stability of current transmission.

[0039] As attached Figure 4 As shown, the adapter plate 3 has a vertical fixing groove 35 on the side opposite to the wiring groove 32. The adapter plate 3 has a fixing hole 36. The wiring groove 32 and the fixing groove 35 are connected through the fixing hole 36. The axial direction of the fixing hole 36 is perpendicular to the slotting direction of the wiring groove 32. The stud end of the wiring bolt 33 passes through the fixing groove 35 and the fixing hole 36 in sequence, and the end is located in the wiring groove 32. The nut end of the wiring bolt 33 is located in the fixing groove 35, and the side wall of the nut end of the wiring bolt 33 is engaged with the inner wall of the fixing groove 35.

[0040] A fixing plate 37 is also installed on the side of the adapter plate 3 facing away from the wiring bolt 33. The fixing plate 37 is fixedly connected to the adapter plate 3 by fastening bolts. The fixing plate 37 covers the groove of the fixing groove 35 and limits the wiring bolt 33 in the axial direction, thus fixing the wiring bolt 33 in the axial direction. When the operator connects the cable 4 to the wiring bolt 33 of the adapter plate 3, the inner wall of the fixing groove 35 will lock the nut end of the wiring bolt 33, preventing the wiring bolt 33 from rotating in the circumferential direction. Thus, the operator only needs to rotate the fixing nut 34 to tighten it, which improves the efficiency of disassembly and assembly between the cable 4 and the adapter plate 3.

[0041] As attached Figure 5 As shown, a circuit breaker 11 and a socket 12 are installed inside the housing 1. The circuit breaker 11 and the socket 12 are parallel to each other and are electrically connected. Two sets of parallel terminals 121 are installed on the side of the socket 12 facing away from the circuit breaker 11. There are three terminals 121 in the same set, and the three terminals 121 in the same set are parallel to each other. The two sets of terminals 121 are electrically connected to the wiring bolts 33 on the two adapter plates 3 through cables 4 respectively.

[0042] Example 2

[0043] This second embodiment is an improvement on the adapter plate 3 based on the first embodiment. The other structures are the same as those in the first embodiment, and will not be described in detail here.

[0044] As attached Figure 5 and attached Figure 6 As shown, three wire clamps 38 are installed on both sides of the adapter plate 3, and the three wire clamps 38 are respectively located at the upper and lower ends of the three connecting bolts 33. The three wire clamps bundle the cables 4 on the three connecting bolts 33. Rubber pads 381 are provided on the inner side wall of the wire clamps 38 to increase the friction between the inner side wall of the wire clamps 38 and the cables 4, thereby further improving the reliability of wire fixing. After the cables 4 are connected to the wiring cavity 2, the wire clamps 38 on the adapter plate 3 can clamp the cables 4, thereby achieving the limitation and fixation of the cables 4, making it less likely for the connection between the cables 4 and the connecting bolts 33 to break.

[0045] As attached Figure 4 As shown, each of the stud ends of the wiring bolts 33 is equipped with a limiting protrusion 331. When the cable 4 slides past the limiting protrusion 331, the limiting protrusion 331 can limit the cable 4 in the axial direction of the wiring bolts 33, reducing the movement of the cable 4 on the wiring bolts 33 and facilitating the connection of the fixing nut 34.

[0046] Working principle:

[0047] During the assembly of the power supply switch, after the cable 4 is passed through the inlet connector 22, the connecting piece 41 of the cable 4 is then fitted onto the stud end of the wiring bolt 33. The wiring bolt 33 is then electrically connected to the circuit breaker 11 through the cable 4, thus realizing the electrical connection between the cable 4 and the circuit breaker 11 through the wiring bolt 33. The battery can then power the motor. In actual use, even if the light inside the coal mine is too dim and workers are likely to bump into the cable 4 while walking in the mine, the cable 4 fitted onto the wiring bolt 33 will not be disconnected due to excessive tension, thus improving the reliability of the electrical connection and ensuring the stability of current transmission.

[0048] The cable clamp 38 can clamp the cable 4 and limit and fix the cable 4 within the limited space of the wiring cavity 21. At the same time, the rubber pad 381 can make the clamp 38 clamp the cable 4 more firmly, reduce the wear on the surface of the cable 4, and increase the tensile strength between the cable 4 and the wiring bolt 33.

[0049] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of protection claimed in this application.

Claims

1. A power supply switch for easy wiring, comprising a housing (1), wherein a circuit breaker (11) is provided inside the housing (1), and a wiring cavity (2) communicating with the housing (1) is provided on the top of the housing (1), wherein an inlet connector (22) and an outlet connector (23) are respectively installed on both sides of the wiring cavity (2), characterized in that, Two adapter plates (3) are installed inside the wiring cavity (2). Three wiring bolts (33) are installed on the adapter plate (3). A cable (4) is installed inside the inlet connector (22) and is respectively fitted around the three wiring bolts (33) of one adapter plate (3). A cable (4) is installed inside the outlet connector (23) and is respectively fitted around the three wiring bolts (33) of the other adapter plate (3). The three wiring bolts (33) on the adapter plate (3) are electrically connected to the circuit breaker (11), and a fixing nut (34) is installed at the end of the wiring bolt (33).

2. A feeder switch for facilitating wiring according to claim 1, wherein, A connecting piece (41) is fixed to the end of the cable (4) that is connected to the wiring bolt (33).

3. The convenience outlet switch of claim 1, wherein, The adapter plate (3) is fixed with multiple fixing blocks (31), and the wiring bolts (33) are located between adjacent fixing blocks (31).

4. The convenience outlet switch of claim 1, wherein, The adapter plate (3) has a fixing groove (35) and a fixing hole (36) connected to the fixing groove (35). The groove direction of the fixing groove (35) is perpendicular to the opening direction of the fixing hole (36). The stud end of the wiring bolt (33) passes through the fixing hole (36), and the nut end of the wiring bolt (33) is engaged with the fixing groove (35). A fixing plate (37) is also installed on the side of the adapter plate (3) facing away from the wiring bolt (33).

5. The convenience outlet switch of claim 1, wherein, Limiting protrusions (331) are installed on the stud ends of the three wiring bolts (33).

6. The convenience outlet switch of claim 1, wherein, The adapter plate (3) is equipped with three wire clamps (38) on both sides, and the three wire clamps (38) and the three wiring bolts (33) are located on the same horizontal plane in the vertical direction.

7. A feed switch for facilitating wiring according to claim 6, wherein, A rubber pad (381) is provided on the inner wall of the wire clamp (38).

8. The convenience outlet switch of claim 1, wherein, The two adapter plates (3) are parallel to each other.

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