An electric leakage sensor welding, testing and positioning device

Abstract

This utility model discloses a welding, testing, and positioning device for a leakage current sensor, including a fixture base plate with several sensor grooves arranged in an equidistant array. During use, the leakage current sensor is placed inside the sensor grooves, allowing a U-shaped input pin to contact a gold-plated probe. The gold-plated probe is elastic, and its elastic deformation ensures continuous and stable surface contact with the U-shaped input pin. A gold-plated copper sheet and the gold-plated probe are connected by a wire, forming a U-shaped closed-loop circuit. During testing, current flows from an external power source through the gold-plated copper sheet, the wire, and the gold-plated probe, ultimately reaching the leakage current sensor and providing the necessary test current. This achieves the desired fixation and testing of the leakage current sensor.

Description

Technical Field

[0001] This utility model relates to the field of leakage current sensor testing and positioning, and in particular to a leakage current sensor welding, testing and positioning device. Background Technology

[0002] Due to the miniaturization and high integration of leakage current sensors, it has become difficult to fix the sensor position and position the test fixture.

[0003] The existing tooling for testing and positioning has insufficient mechanical structure adaptability. Testing leakage current sensors requires step-by-step testing and welding, which affects the automation of welding and testing, resulting in low work efficiency. Moreover, the positioning effect is poor. During the welding and testing process, the leakage current sensor is prone to shaking and displacement, which affects the testing and welding effect. Utility Model Content

[0004] One objective of this invention is to provide a leakage current sensor welding, testing, and positioning device that at least solves any of the above-mentioned technical problems.

[0005] A further objective of this invention is to avoid situations where positioning tests and welding processes are performed in a distributed manner, making continuous automated production impossible.

[0006] Another further objective of this invention is to improve work efficiency.

[0007] In particular, this utility model provides a welding, testing and positioning device for leakage current sensors, including a tooling base plate, wherein the tooling base plate has a plurality of sensor grooves, and the plurality of sensor grooves are arranged in an array at equal distances;

[0008] A tooling top plate is disposed on the upper part of the tooling bottom plate, and one side of the tooling top plate is movably connected to one side of the tooling bottom plate.

[0009] Furthermore, the sensor groove has pick-and-place slots on both sides, and a coil placement slot separated by a support strip is provided at the bottom of the sensor groove. A rounded three-sided groove is provided on the side of the sensor groove near the long side of the tooling base plate, and a support slot is provided on the side of the rounded three-sided groove near the coil placement slot.

[0010] Furthermore, a slot is provided on the side of the coil placement slot away from the rounded corner three-sided slot, a gold-plated probe slot is provided inside the slot, and a gold-plated copper sheet slot is provided on the side near the slot, with the gold-plated copper sheet slot and the gold-plated probe slot being provided correspondingly.

[0011] Furthermore, the opening of the coil placement slot is also provided with a first circuit board slot and a second circuit board slot, the first circuit board slot being located near the card slot and the second circuit board slot being located near the support slot.

[0012] Furthermore, one end of the tooling base plate is provided with a hinge for connecting to the tooling top plate, and the other end is provided with a rectangular groove. A lower connecting part is provided in the rectangular groove, and an upper connecting part is provided above the lower connecting part. The lower connecting part and the upper connecting part are fastened together.

[0013] Furthermore, the tooling top plate is provided with the same number of clamping grooves as the coil placement grooves, and a hole is provided on one side of the clamping groove.

[0014] Furthermore, the tooling top plate is also provided with an upper connecting part groove, the upper connecting part is installed in the upper connecting part groove, and a limiting hole for fixing the upper connecting part is provided in the upper connecting part groove.

[0015] Furthermore, the shape and size of the sensor groove are matched with the leakage current sensor. The leakage current sensor includes a circuit board, and the overall shape of the circuit board is adapted to the first circuit board groove and the second circuit board groove. The circuit board is placed inside the first circuit board groove and the second circuit board groove.

[0016] Furthermore, a 6P header pin is fixedly installed on the surface of the circuit board, and the 6P header pin is electrically connected to the circuit board. An upper frame and a lower frame are fixedly installed at the bottom of the circuit board, and the upper frame and the lower frame are interlocked with each other. A metering coil is installed on the interlocking side of the upper frame and the lower frame, and a leakage coil is installed on the side of the interlocking point of the upper frame and the lower frame facing away from the metering coil. A U-shaped input pin is provided in the middle of the metering coil and the leakage coil.

[0017] The technical effects and advantages of this utility model are as follows:

[0018] 1. In use, this utility model places the leakage current sensor inside the sensor groove, allowing the U-shaped input pin to contact the gold-plated probe. The gold-plated probe is elastic, and its elastic deformation ensures continuous and stable surface contact with the U-shaped input pin. The gold-plated copper sheet and the gold-plated probe are connected by a wire, forming a U-shaped closed loop. During testing, current flows from an external power source through the gold-plated copper sheet, wire, and gold-plated probe, ultimately reaching the leakage current sensor and providing it with the required test current. This achieves the effect of fixing and testing the leakage current sensor.

[0019] 2. This utility model can realize the welding and testing of multiple leakage current sensors. The coil placement groove is provided with a support bar, and a support groove is opened on one side of the bottom wall of the rounded three-sided groove. The support groove and support bar can be tightly matched with the sensor groove, which can fix the position of the leakage current sensor and effectively prevent the leakage current sensor from shaking and shifting during welding and testing, thus achieving the effect of precise positioning. Attached Figure Description

[0020] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0021] Figure 1 This is a schematic diagram of the assembly structure of the tooling base plate and tooling top plate of this utility model.

[0022] Figure 2 This is a schematic diagram of the tooling base plate structure of this utility model.

[0023] Figure 3 This is a schematic diagram of the tooling base plate of this utility model from a first-view perspective.

[0024] Figure 4 This is a schematic diagram of the top plate structure of the tooling of this utility model.

[0025] Figure 5 This is a schematic diagram of the leakage current sensor structure of this utility model.

[0026] Figure 6 This utility model Figure 2 A magnified schematic diagram of part A in the diagram.

[0027] Figure 7 This utility model Figure 3 A magnified schematic diagram of part B.

[0028] In the diagram: 1. Fixture base plate; 11. Pick-up and drop slot; 12. Sensor groove; 13. Coil placement slot; 14. Rounded corner three-sided groove; 15. Support groove; 16. Support strip; 17. Slot; 18. Gold-plated copper sheet groove; 19. Gold-plated probe groove; 110. First circuit board groove; 111. Second circuit board groove; 2. Fixture top plate; 21. Hole; 22. Clamping groove; 23. Upper connecting part groove; 24. Limiting hole; 3. Hinge; 4. Gold-plated copper sheet; 5. Gold-plated probe; 6. Leakage sensor; 61. Circuit board; 62. 6P pin header; 63. Upper frame; 64. Lower frame; 65. Measuring coil; 66. Leakage coil; 67. U-shaped input pin; 68. First clearance hole; 69. Second clearance hole; 7. Rectangular groove; 8. Lower connecting part; 9. Upper connecting part. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Figure 1 This is a schematic diagram of the assembly structure of the tooling base plate and tooling top plate of this utility model. Figure 2 This is a schematic diagram of the tooling base plate structure of this utility model. Figure 3 This is a schematic diagram of the tooling base plate of this utility model from a first-view perspective. Figure 4 This is a schematic diagram of the top plate structure of the tooling of this utility model. Figure 5 This is a schematic diagram of the leakage current sensor structure of this utility model. Figure 6 This utility model Figure 2 A magnified schematic diagram of part A in the diagram. Figure 7 This utility model Figure 3 A magnified schematic diagram of part B.

[0031] This embodiment provides a leakage current sensor welding, testing, and positioning device, including a fixture base plate 1 and a fixture top plate 2. The fixture base plate 1 has a plurality of sensor grooves 12, in which leakage current sensors 6 can be installed and fixed. The plurality of sensor grooves 12 are arranged in an array at equal distances, and the sensor grooves 12 are provided with pick-and-place slots 11 on both sides. Figure 2 and Figure 3 As shown, multiple leakage current sensors 6 of the same type, model and size can be installed on the tooling base plate 1, so that multiple leakage current sensors 6 can be fixed and tested at one time.

[0032] The top plate 2 of the fixture is located on the upper part of the bottom plate 1 of the fixture, and one end of the top plate 2 is movably connected to one end of the bottom plate 1 of the fixture. Specifically, the connection can be made by a hinge 3, so that the top plate 2 and the bottom plate 1 of the fixture can be fastened together to form an openable structure. When the top plate 2 of the fixture is closed, it works together with the bottom plate 1 to tightly clamp the leakage current sensor 6 in the middle, further enhancing the fixing effect of the leakage current sensor 6. The top plate 2 of the fixture is provided with an upper connecting groove 23. After the upper connecting part and the lower connecting part 8 are installed and fastened together, the bottom plate 1 and the top plate 2 of the fixture are locked together to form a whole, ensuring that the fixture remains in a tight state during the test. The other end of the tooling base plate 1 is provided with a rectangular groove 7, and a lower connecting part 8 is provided in the rectangular groove 7. An upper connecting part is provided above the lower connecting part 8, and the lower connecting part 8 is fastened to the upper connecting part. The tooling top plate 2 is provided with a number of clamping grooves 22 equal to the number of sensor grooves 12. A hole 21 is provided on one side of the clamping groove 22. The tooling top plate 2 is also provided with an upper connecting part groove 23. The upper connecting part is installed in the upper connecting part groove 23, and a limiting hole 24 for fixing the upper connecting part is provided in the upper connecting part groove 23.

[0033] In particular, it should be further explained that the main function of the fixture base plate 1 is to provide a stable support platform for the leakage current sensor 6, match the shape of the leakage current sensor 6, and realize the precise positioning of the leakage current sensor 6; at the same time, the fixture base plate 1 also serves to fix the leakage current sensor 6 during welding and testing, effectively preventing the leakage current sensor 6 from shifting or shaking during operation.

[0034] It should be further explained that the bottom of the sensor groove 12 is provided with a coil placement groove 13 separated by a support strip 16, and a rounded three-sided groove 14 is provided on the side of the sensor groove 12 near the long side of the tooling base plate 1, and a support groove 15 is provided on the side of the rounded three-sided groove 14 near the coil placement groove 13.

[0035] It should be further explained that the sensor groove 12 has a first clearance hole 68 on both sides, and the support groove 15 has a second clearance hole 69 on both sides. The first clearance hole 68 and the second clearance hole 69 reduce the friction between the circuit board and the sensor groove 12, the first circuit board groove 110, and the second circuit board groove 111, so as to prevent the circuit board from being difficult to remove due to excessive friction.

[0036] It should be further explained that a slot 17 is provided on the side of the coil placement slot 13 away from the rounded corner three-sided slot 14. A gold-plated probe slot 19 is provided inside the slot 17, and a gold-plated copper sheet slot 18 is provided on the side close to the slot 17. The gold-plated copper sheet slot 18 is provided in correspondence with the gold-plated probe slot 19.

[0037] It should be further explained that the opening of the coil placement slot 13 is also provided with a first circuit board slot 110 and a second circuit board slot 111. The first circuit board slot 110 is located near the card slot 17, and the second circuit board slot 111 is located near the support slot 15.

[0038] It should be further explained that a gold-plated copper sheet is provided in the gold-plated copper sheet groove 18, the shape and size of the sensor groove 12 are matched with the leakage current sensor 6, the leakage current sensor 6 includes a circuit board, the shape of the circuit board is adapted to the first circuit board groove 110 and the second circuit board groove 111, the circuit board is placed inside the first circuit board groove 110 and the second circuit board groove 111, and a gold-plated probe is inserted into the gold-plated probe groove 19.

[0039] It should be further explained that a 6P pin header is fixedly installed on the surface of the circuit board, and the 6P pin header is electrically connected to the circuit board. An upper frame 63 and a lower frame 64 are fixedly installed at the bottom of the circuit board, and the upper frame 63 and the lower frame 64 are interlocked. A metering coil 65 is installed on the interlocking side of the upper frame 63 and the lower frame 64, and a leakage current coil 66 is installed on the side of the interlocking point of the upper frame 63 and the lower frame 64 facing away from the metering coil 65. A U-shaped input pin is provided in the middle of the metering coil 65 and the leakage current coil 66. When the leakage current sensor 6 is placed, the top plate 2 and the bottom plate 1 of the fixture are closed. During the test, the sensor makes precise contact with the gold-plated copper sheet through the reserved hole 21 on the top plate 2. At the same time, the clamping groove 22 on the top plate 2 applies appropriate pressure to the leakage current sensor 6, which further fixes it and effectively prevents the leakage current sensor 6 from shifting its position due to external forces or vibrations during the test, ensuring the stability of the test process and the accuracy of the data.

[0040] Working principle of this utility model:

[0041] During use, the leakage current sensor 6 is placed inside the sensor groove 12, allowing the U-shaped input pin to contact the gold-plated probe. The gold-plated probe is elastic, and its elastic deformation ensures continuous and stable surface contact with the U-shaped input pin. The gold-plated copper sheet and the gold-plated probe are connected by a wire, forming a U-shaped closed-loop circuit. During testing, current flows from an external power source through the gold-plated copper sheet, wire, and gold-plated probe, ultimately reaching the leakage current sensor 6, providing the necessary test current and thus achieving the effect of fixing and testing the leakage current sensor 6. Multiple leakage current sensors 6 can be soldered and tested. The coil placement groove 13 has a support strip 16 inside, and a support groove 15 is opened on one side of the bottom wall of the rounded three-sided groove 14. The support groove 15 and support strip 16 can tightly fit with the sensor groove 12, fixing the position of the leakage current sensor 6 and effectively preventing it from shaking or shifting during soldering and testing, achieving precise positioning.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for welding, testing, and locating leakage current sensors, characterized in that, include, The tooling base plate (1) has a plurality of sensor grooves (12) arranged in an array at equal distances between the plurality of sensor grooves (12); Tooling top plate (2), the tooling top plate (2) is disposed on the upper part of the tooling bottom plate (1), and one side of the tooling top plate (2) is movably connected to one side of the tooling bottom plate (1); The sensor groove (12) is provided with pick-up and put-out grooves (11) on both sides. The bottom of the sensor groove (12) is provided with a coil placement groove (13) separated by a support bar (16). The sensor groove (12) is provided with a rounded three-sided groove (14) on the side near the long side of the tooling base plate (1), and the rounded three-sided groove (14) is provided with a support groove (15) on the side near the coil placement groove (13).

2. The leakage current sensor welding, testing, and positioning device according to claim 1, characterized in that, The sensor groove (12) is provided with a slot (17) on the side away from the rounded corner three-sided groove (14). The slot (17) is provided with a gold-plated probe groove (19) inside. A gold-plated copper plate groove (18) is provided on the side close to the slot (17). The gold-plated copper plate groove (18) is provided in correspondence with the gold-plated probe groove (19).

3. The leakage current sensor welding, testing, and positioning device according to claim 2, characterized in that, The opening of the sensor groove (12) is also provided with a first circuit board groove (110) and a second circuit board groove (111). The first circuit board groove (110) is located near the card slot (17), and the second circuit board groove (111) is located near the support groove (15).

4. The leakage current sensor welding, testing, and positioning device according to claim 1, characterized in that, One end of the tooling base plate (1) is provided with a hinge (3) that connects to the tooling top plate (2), and the other end is provided with a rectangular groove (7). A lower connecting part (8) is provided in the rectangular groove (7), and an upper connecting part is provided on the upper part of the lower connecting part (8). The lower connecting part (8) is engaged with the upper connecting part.

5. The leakage current sensor welding, testing, and positioning device according to claim 4, characterized in that, The tooling top plate (2) is provided with the same number of clamping grooves (22) as the sensor grooves (12), and a hole (21) is provided on one side of the clamping groove (22).

6. The leakage current sensor welding, testing, and positioning device according to claim 5, characterized in that, The tooling top plate (2) is also provided with an upper connecting groove (23), the upper connecting part is installed in the upper connecting groove (23), and a limiting hole (24) for fixing the upper connecting part is provided in the upper connecting groove (23).

7. The leakage current sensor welding, testing, and positioning device according to claim 2, characterized in that, A gold-plated copper sheet is provided in the gold-plated copper sheet groove (18), and a gold-plated probe is inserted in the gold-plated probe groove (19).

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