Circuit resistance test wire connector suitable for various forms of switch contacts

Abstract

The utility model relates to a circuit resistance test wire connector suitable for various forms of switch contacts, which belongs to the technical field of wiring equipment and comprises an insulating handle, a rotating shaft is arranged on the insulating handle, an L-shaped rotating rod is arranged on the rotating shaft, a bolt is arranged on the insulating handle and movably connected with the insulating handle, and the L-shaped rotating rod is arranged on the L-shaped rotating rod. An inserting hole is formed in the L-shaped rotating rod, the inserting hole is connected with the plug pin in an inserted and matched mode, an inner forceps clamping part and an outer forceps clamping part are arranged at the two ends of the L-shaped rotating rod respectively, pressure sensors are arranged on the forceps clamping part and the outer forceps clamping part respectively, and a display device is arranged on the insulating handle. And the display device is electrically connected with the pressure sensor. According to the utility model, the inner clamp part and the outer clamp part are respectively used for being connected with the moving contact and the tulip contact of the circuit breaker, so that the loop resistance of the circuit breaker can be conveniently tested, the test is convenient and simple, the reliability is high, and the test efficiency of the loop resistance is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of wiring equipment, specifically relating to a wiring device suitable for testing the resistance of circuits of various types of switch contacts. Background Technology

[0002] Loop resistance testing clamps are essential components for testing the resistance of circuit breakers and disconnectors. The accuracy of these resistance values ​​directly impacts the conductivity of the circuit breaker and disconnector, making loop resistance testing crucial. In practical applications, traditional clamps, due to their limited opening angle, often fail to clamp or hold the conductor under test securely. During high-voltage electrical testing, using high-altitude clamps significantly improves work efficiency. However, the performance requirements of clamps vary for each test. For circuit breaker loop resistance measurement, the clamping contact performance of the clamps is critical, and ordinary clamps are prone to slipping out, failing to meet the requirements of loop resistance testing. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a connector for testing the resistance of switch contact circuits of various forms, so as to solve the problem of inconvenience in the use of the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A connector for testing the resistance of circuits of various switch contacts includes an insulated handle, a rotating shaft on the insulated handle, an L-shaped rotating rod on the rotating shaft, the L-shaped rotating rod being rotatably connected to the rotating shaft, a pin on the insulated handle being movably connected to the insulated handle, a socket on the L-shaped rotating rod being inserted and mated with the pin, an inner clamping part and an outer clamping part being respectively provided at both ends of the L-shaped rotating rod, the inner clamping part and the outer clamping part being electrically connected, a pressure sensor being respectively provided on the clamping part and the outer clamping part, and a display device being provided on the insulated handle, the display device being electrically connected to the pressure sensor.

[0006] Furthermore, the inner clamping part includes a circular tube, a conductive plate, and a conical rod. The circular tube is fixedly connected to an L-shaped rotating rod, and the conductive plate is electrically connected to the outer clamping part. The conductive plate consists of two sets of opposing arc-shaped plates. A top rod is provided on the conductive plate. The top rod extends through the side wall of the circular tube into the interior of the circular tube and is movably connected to the circular tube. A compression spring is sleeved on the top rod. One end of the compression spring abuts against the inner wall of the circular tube, and the other end of the compression spring is fixedly connected to the top rod. The conical rod is slidably connected to the L-shaped rotating rod and extends between the two sets of top rods. The conical surface of the conical rod abuts against the top rod. The pressure sensor is disposed on the conductive plate.

[0007] Furthermore, the L-shaped rotating rod has an axially arranged shaft hole, the tapered rod is disposed in the shaft hole and is slidably connected to the shaft hole, the L-shaped rotating rod has a radially arranged sliding groove, a sliding pin is inserted through the tapered rod, one end of the sliding pin is disposed in the sliding groove, the sliding pin is slidably engaged with the sliding groove, the other end of the sliding pin is provided with a spring piece, the other end of the spring piece abuts against the inner wall of the shaft hole, the inner side of the sliding groove is provided with a reverse tooth, the sliding pin is provided with a retaining tooth, the retaining tooth abuts against the reverse tooth, the reverse tooth is used to restrict the unidirectional sliding of the sliding pin.

[0008] Furthermore, the outer clamping part includes a ring body, an adjusting tube, a T-shaped rod, a clamping plate, an adjusting nut, and an adjusting spring. The clamping plate is a conductor and is electrically connected to the inner clamping part. There are three sets of adjusting tubes, which are uniformly fixed along the radial direction of the ring body. The T-shaped rod passes through the adjusting tube and is slidably connected to the adjusting tube. The clamping plate is fixedly connected to the end of the T-shaped rod. The adjusting spring passes through the T-shaped rod and its two ends are respectively abutted against the clamping plate and the adjusting nut. The adjusting nut is internally threaded to the adjusting tube. The pressure sensor is mounted on the clamping plate.

[0009] Furthermore, the angle of the L-shaped rotating rod is 120 degrees.

[0010] Furthermore, the insulated handle is provided with anti-slip ridges.

[0011] Furthermore, the conductive plate is made of copper plated with silver.

[0012] Furthermore, the clamping plate is made of silver-plated copper.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This invention provides a connector for testing the circuit resistance of various switch contacts. The connector has an inner clamping part and an outer clamping part, which are used to connect to the moving contact and the Phillips head contact of the circuit breaker, respectively. This facilitates the testing of the circuit resistance of the circuit breaker, making the test convenient, simple, and highly reliable, thus improving the testing efficiency of the circuit resistance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the L-shaped rotating rod structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal clamping part of this utility model;

[0018] Figure 4 This is a schematic diagram of the external clamping part of this utility model;

[0019] Figure 5 This is a schematic diagram of the tapered rod structure of this utility model.

[0020] In the diagram: 1. Insulated handle, 2. Rotating shaft, 3. L-shaped rotating rod, 4. Pin, 5. Insertion hole, 6. Inner clamp holding part, 61. Round tube, 62. Conductive plate, 63. Tapered rod, 64. Top rod, 65. Compression spring, 66. Sliding pin, 67. Spring piece, 68. Clamping tooth, 7. Outer clamp holding part, 71. Changing body, 72. Adjusting tube, 73. T-shaped rod, 74. Clamping plate, 75. Adjusting nut, 76. Adjusting spring, 8. Pressure sensor, 9. Display device. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Example 1

[0023] like Figures 1 to 5As shown, this utility model provides an embodiment of a connector for testing the resistance of switch contact circuits of various forms, including an insulating handle 1 made of insulating hard resin or hard rubber. A rotating shaft 2 is provided on the insulating handle 1, and an L-shaped rotating rod 3 is provided on the rotating shaft 2. The L-shaped rotating rod 3 is rotatably connected to the rotating shaft 2. A pin 4 is provided on the insulating handle 1 and is movably connected to it. A socket 5 is provided on the L-shaped rotating rod 3, and the socket 5 is engaged with the pin 4. The pin 4 is mounted on the insulating handle 1 and is movable, thus restricting the free movement of the L-shaped rotating rod 3. To better implement this utility model device, a spring-loaded component is provided on the pin 4 to maintain the tendency of the pin 4 to move towards the socket 5. The L-shaped rotating rod 3 has two insertion holes 5. The extension line of each insertion hole 5 coincides with the axis of the two ends of the L-shaped rotating rod 3. One of the insertion holes 5 is connected to a pin 4 for aligning the axis of one end of the L-shaped rotating rod 3 with the center line of the insulating handle 1, facilitating the connection of the connector to the circuit breaker contacts via the insulating handle 1. The two ends of the L-shaped rotating rod 3 are respectively provided with an inner clamping part 6 and an outer clamping part 7, which are electrically connected. The inner clamping part 6 is used to connect with the circuit breaker's stud contacts, connecting the internal circuit of the circuit breaker to a circuit resistance tester. The outer clamping part 7 is used to snap into the circuit breaker's moving contact post, connecting the internal circuit of the circuit breaker to a circuit resistance tester. Pressure sensors 8 are respectively provided on the clamping parts 6 and 7, and a display device 9 is provided on the insulating handle 1, which is electrically connected to the pressure sensors 8. The display device 9 uses a liquid crystal display or a digital tube display. The driving circuit of the display device 9 is existing technology and will not be described in detail here. This invention includes an inner clamping part 6 and an outer clamping part 7, which are respectively used to connect to the moving contact and the swivel contact of the circuit breaker. This adapts to the needs of testing the circuit resistance of different types of switch contacts. The device of this invention is convenient, simple to use, highly reliable, and improves the efficiency of circuit resistance testing.

[0024] like Figure 2 and Figure 5 As shown, the inner clamping part 6 includes a circular tube 61, a conductive plate 62, and a tapered rod 63. The circular tube 61 is fixedly connected to the L-shaped rotating rod 3, and the conductive plate 62 is electrically connected to the outer clamping part 7. The L-shaped rotating rod 3 can be made of lightweight insulating material to reduce the weight of the device. The conductive plate 62 consists of two sets of oppositely arranged arc-shaped plates. The conductive plate 62 is a conductive component used to abut against the stationary contact of the circuit breaker and to connect the circuit breaker circuit to the circuit resistance tester.

[0025] like Figure 3As shown, a top rod 64 is vertically arranged on the conductive plate 62. The top rod 64 extends through the side wall of the circular tube 61 into the interior of the circular tube 61. The top rod 64 is movably connected to the circular tube 61 by insertion. A compression spring 65 is sleeved on the top rod 64. One end of the compression spring 65 abuts against the inner wall of the circular tube 61, and the other end of the compression spring 65 is fixedly connected to the top rod 64. The compression spring 65 is used to tend to move the two conductive plates 62 towards each other. The conical rod 63 is slidably connected to the L-shaped rotating rod 3. The conical rod 63 extends between the two sets of top rods 64, and the conical surface of the conical rod 63 abuts against the top rod 64. The pressure sensor 8 is arranged on the conductive plate 62. The conical rod 63 has a certain taper, and its conical surface can abut against the top rod 64 at various positions. By opening the top rods 64 at both ends by the conical rod 63, the distance between the two conductive plates 62 can be adjusted to achieve the pressure between the conductive plate 62 and the circuit breaker contacts. A pressure sensor 8 is provided on the outer side of the conductive plate 62. The pressure sensor transmits the detected pressure data to the display device 9, which displays the pressure value between the connector and the contact to prevent excessive pressure between the connector and the contact from damaging the contact surface.

[0026] like Figure 5As shown, the L-shaped rotating rod 3 has an axially arranged shaft hole 31, and the tapered rod 63 is disposed within the shaft hole 31. The tapered rod 63 is slidably connected to the shaft hole 31, and the shaft hole 31 is provided to facilitate the free sliding of the tapered rod 63 within the shaft hole 31. The L-shaped rotating rod 3 has a radially arranged sliding groove 32, and a sliding pin 66 passes through the tapered rod 63. One end of the sliding pin 66 is disposed within the sliding groove 32, and the sliding pin 66 is slidably connected to the sliding groove 32. The sliding groove 32 is provided on one side of the shaft hole 31 to facilitate the free sliding of the sliding pin 66. By controlling the sliding of the sliding pin 66, the sliding of the tapered rod 63 is achieved, thereby adjusting the pressure value between the conductive plate 62 and the contact. The other end of the sliding pin 66 is provided with a spring piece 67. Multiple spring pieces 67 can be provided, disposed on the other side of the tapered rod 63. The other end of the spring piece 67 abuts against the inner wall of the shaft hole 31, and the function of the spring piece 67 is to spring the tapered rod 63 toward the other end of the shaft hole 31. The spring piece 67 is a Z-shaped spring piece. A reverse tooth 33 is provided on the inner side of the slide groove 32, and a retaining tooth 68 is provided on the sliding pin 66. The retaining tooth 68 and the reverse tooth 33 are engaged and connected, and the reverse tooth 33 is used to restrict the unidirectional sliding of the sliding pin 66. In this embodiment of the invention, under the action of the spring piece 67, the cone rod 63 moves towards one side of the slide groove 32. The reverse tooth 33 engages with the retaining tooth 68 to restrict the cone rod 63 from sliding backward. When the cone rod 63 is pushed to the right, the conductive plates 62 are pushed apart to both sides, increasing the pressure between the conductive plates 62 and the contacts. Due to the action of the reverse tooth 33, the cone rod 63 cannot move to the left. Therefore, the pressure value between the two conductive plates 62 and the contacts remains constant. When it is necessary to reduce the pressure or after the test is completed, the cone rod 63 is pushed to the other side of the shaft hole 31, and the reverse tooth 33 disengages from the retaining tooth 68. At this time, the cone rod 63 can slide to the left to release the pressure between the two conductive plates 62 and the contacts. In order to better implement the device of this utility model, an elastic component is added between the cone rod 63 and the shaft hole 31, so that the cone rod 63 maintains the tendency to move to the left.

[0027] like Figure 4As shown, the outer clamping part 7 includes a ring body 71, an adjusting tube 72, a T-shaped rod 73, a clamping plate 74, an adjusting nut 75, and an adjusting spring 76. The clamping plate 74 is a conductor and is electrically connected to the inner clamping part 6. The adjusting tube 72 consists of three sets, which are uniformly fixed along the radial direction of the ring body 71. The T-shaped rod 73 passes through the adjusting tube 72 and is slidably connected to the adjusting tube 72. The clamping plate 74 is fixedly connected to the end of the T-shaped rod 73. The adjusting spring 76 passes through the T-shaped rod 73, and its two ends are respectively abutted against the clamping plate 74 and the adjusting nut 75. The adjusting nut 75 is internally threaded to the adjusting tube 72. The pressure sensor 8 is mounted on the clamping plate 74. In this embodiment of the invention, the adjusting nut 75 is a long nut, threadedly connected to the adjusting tank 72. An adjusting spring 76 is provided between the adjusting nut 75 and the T-shaped rod 73. The adjusting spring 76 is used to maintain the outward movement tendency of the T-shaped rod 73. When the relative position between the adjusting nut 75 and the adjusting tank 72 is adjusted, the pressure value of the adjusting spring 76 changes, which is used to adjust the pressure between the clamping plate 74 and the contact. When it is necessary to test the internal circuit contact resistance of the circuit breaker by connecting to the moving contact column of the circuit breaker, the external clamping part 7 of the device of this invention is clamped onto the moving contact column of the circuit breaker. By adjusting the pressure between the clamping plate 74 and the contact, good contact between the connector and the circuit breaker is ensured, the accuracy of the circuit resistance test is ensured, and the pressure between the clamping plate 74 and the contact is detected to protect the circuit breaker contacts from damage.

[0028] The L-shaped rotating rod 3 has an angle of 120 degrees. Two insertion holes 5 are provided on the L-shaped rotating rod 3, which are used for two wiring positions respectively, so as to meet the wiring needs of different contact shapes.

[0029] The insulated handle 1 is provided with anti-slip ridges.

[0030] The conductive plate 62 is made of copper plated with silver.

[0031] The clamping plate 74 is made of silver-plated copper.

[0032] Of course, the above embodiments are not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A connector for testing the resistance of switch contact circuits of various types, characterized in that: The device includes an insulated handle (1), a rotating shaft (2) on the insulated handle (1), an L-shaped rotating rod (3) on the rotating shaft (2), the L-shaped rotating rod (3) being rotatably connected to the rotating shaft (2), a pin (4) on the insulated handle (1) being movably connected to the insulated handle (1), a socket (5) on the L-shaped rotating rod (3) being inserted and connected to the pin (4), an inner clamping part (6) and an outer clamping part (7) being respectively provided at both ends of the L-shaped rotating rod (3), the inner clamping part (6) and the outer clamping part (7) being electrically connected, pressure sensors (8) being respectively provided on the clamping part (6) and the outer clamping part (7), and a display device (9) on the insulated handle (1), the display device (9) being electrically connected to the pressure sensor (8).

2. The connector for testing the resistance of switch contact circuits of various forms according to claim 1, characterized in that: The inner clamping part (6) includes a round tube (61), a conductive plate (62), and a tapered rod (63). The round tube (61) is fixedly connected to the L-shaped rotating rod (3). The conductive plate (62) is electrically connected to the outer clamping part (7). The conductive plate (62) consists of two sets of oppositely arranged arc-shaped plates. A top rod (64) is provided on the conductive plate (62). The top rod (64) extends through the side wall of the round tube (61) into the interior of the round tube (61). The top rod (64) is movable with the round tube (61). The top rod (64) is fitted with a compression spring (65), one end of which is in contact with the inner wall of the round tube (61), and the other end of which is fixedly connected to the top rod (64). The tapered rod (63) is slidably connected to the L-shaped rotating rod (3). The tapered rod (63) extends between the two sets of top rods (64), and the tapered surface of the tapered rod (63) is in contact with the top rod (64). The pressure sensor (8) is mounted on the conductive plate (62).

3. The connector for testing the resistance of switch contact circuits of various forms according to claim 2, characterized in that: The L-shaped rotating rod (3) is provided with an axial shaft hole (31). The tapered rod (63) is disposed in the shaft hole (31) and is slidably connected to the shaft hole (31). The L-shaped rotating rod (3) is provided with a radial groove (32). A sliding pin (66) is provided on the tapered rod (63). One end of the sliding pin (66) is disposed in the groove (32) and is slidably connected to the groove (32). The other end of the sliding pin (66) is provided with a spring piece (67). The other end of the spring piece (67) abuts against the inner wall of the shaft hole (31). A reverse tooth (33) is provided on the inner side of the groove (32). A retaining tooth (68) is provided on the sliding pin (66). The retaining tooth (68) abuts against the reverse tooth (33) and is used to restrict the unidirectional sliding of the sliding pin (66).

4. A connector for testing the resistance of switch contact circuits of various forms as described in claim 1, characterized in that: The outer clamping part (7) includes a ring (71), an adjusting tube (72), a T-shaped rod (73), a clamping plate (74), an adjusting nut (75), and an adjusting spring (76). The clamping plate (74) is a conductor and is electrically connected to the inner clamping part (6). There are three sets of adjusting tubes (72), which are uniformly fixed along the radial direction of the ring (71). The T-shaped rod (73) passes through the adjusting tube (72) and is slidably connected to the adjusting tube (72). The clamping plate (74) is fixedly connected to the end of the T-shaped rod (73). The adjusting spring (76) passes through the T-shaped rod (73) and its two ends are respectively abutted against the clamping plate (74) and the adjusting nut (75). The adjusting nut (75) is internally threaded to the adjusting tube (72). The pressure sensor (8) is set on the clamping plate (74).

5. A connector for testing the resistance of switch contact circuits of various forms according to claim 1, characterized in that: The angle of the L-shaped rotating rod (3) is 120 degrees.

6. A connector for testing the resistance of switch contact circuits of various forms according to claim 1, characterized in that: The insulated handle (1) is provided with anti-slip ridges.

7. A connector for testing the resistance of switch contact circuits of various forms according to claim 2, characterized in that: The conductive plate (62) is made of copper plated with silver.

8. A connector for testing the resistance of switch contact circuits of various forms according to claim 4, characterized in that: The clamp (74) is made of copper plated with silver.

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