A wiring device for photovoltaic electrical testing

Abstract

This utility model provides a wiring device for photovoltaic electrical testing, relating to the technical field of wiring devices. It includes a junction box and a connector disposed on the outer side of one end of the junction box. The connector has circumferentially spaced slots on its side away from the junction box. A clamping member is rotatably disposed in the slots, and a clamping ring is threadedly connected to the connector to provide reverse rotational limiting for the limiting portion extending beyond the slots. This utility model, through the coordinated operation of the connector, clamping member, and clamping ring, achieves clamping and holding of the wire, ensuring stable fixation of the wire by the wiring device and improving the reliability and safety of wiring during photovoltaic electrical testing.

Description

Technical Field

[0001] This utility model relates to the field of wiring device technology, and in particular to a wiring device for photovoltaic electrical testing. Background Technology

[0002] Wiring devices for photovoltaic electrical testing refer to devices used in photovoltaic power generation systems for connecting, testing, and monitoring electrical equipment. In photovoltaic systems, wiring devices play a crucial role in connecting different components and equipment, ensuring the normal operation and safety of the system. When connecting different components and equipment, some wire sizes vary, and the existing wiring devices' through-holes cannot accommodate wires of different sizes. If the gap between the wire and the through-hole is too large, it will affect the stability of the internal wiring. Furthermore, excessively large gaps can easily allow concrete to enter the enclosure and damage the wires.

[0003] A search revealed Chinese patent CN222655141U, which discloses a wiring device for photovoltaic electrical testing. The device includes a housing with a wiring port on the top and a cover plate adapted to the port. Multiple pairs of through holes are arranged opposite each other on both sides of the housing. An adjusting ring is coaxially fixed to the outer end of each through hole. A threaded tube is threadedly connected to the outer end of the adjusting ring, and the outer circumferential wall of the threaded tube is threadedly connected to the inner circumferential wall of the adjusting ring. Multiple deformation slits are spaced circumferentially along the outer end of the threaded tube, and the diameter of the outer end gradually decreases towards the inner end. When the threaded tube is rotated to move inward towards the adjusting ring, the outer end of the threaded tube can be compressed inward by the adjusting ring. Adjusting the degree of compression of the outer end by rotating the threaded tube allows for clamping and fixing of wires of different sizes, improving the stability of the wiring inside the device and ensuring the sealing of the wiring points.

[0004] The aforementioned technology lacks additional limiting functions for the cable. When faced with external forces such as pulling or equipment vibration, the cable may loosen and shift due to the lack of effective restraint, leading to unstable electrical connections, poor contact, signal transmission interruptions, and other malfunctions. This affects the accuracy of photovoltaic electrical testing data and the normal operation of the equipment. Furthermore, the small size of the cable is difficult to clamp securely, requiring frequent replacement of parts and reducing the practicality of the device. Utility Model Content

[0005] The purpose of this utility model is to provide a wiring device for photovoltaic electrical testing, which can solve the problem that the above-mentioned technology lacks additional clamping function for the wire. When faced with external force pulling, equipment vibration, etc., the wire may loosen and shift due to the lack of effective restraint, resulting in unstable electrical connection, poor contact, signal transmission interruption and other faults, which affect the accuracy of photovoltaic electrical testing data and normal operation of equipment. In addition, it is difficult to firmly clamp the small wire, and frequent replacement of parts is required, which reduces the practicality of the device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a wiring device for photovoltaic electrical testing, comprising a junction box, a connector, a clamping member, and a clamping ring. The connector is disposed on the junction box, and slots are provided at intervals along its circumference on the side of the connector away from the junction box. The clamping member is rotatably disposed in the slots. The clamping member is provided with a clamping part and a limiting part. When the clamping member rotates, the clamping part extends into or out of the slots, and the limiting part rotates in the opposite direction to the clamping part. The clamping ring is threadedly connected to the connector to limit the reverse rotation of the limiting part extending out of the slots.

[0007] In a preferred embodiment, the clamping member is a clamping pin, the clamping pin is a triangular prism, the sharp end of the clamping pin forms the clamping portion, and the opposite end of the sharp end of the clamping pin forms the limiting portion.

[0008] In a preferred embodiment, the clamping member has a rotating shaft at the portion between the clamping part and the limiting part, and the clamping member is connected to the connector via the rotating shaft.

[0009] In a preferred embodiment, the clamping member is a clamping plate, which is a fan-shaped plate. The inner end of the clamping plate is rotatably connected to the slot. The end face of the clamping plate facing the inside of the connector is a straight surface to form the clamping part, and the end face of the clamping plate facing away from the inside of the connector is an arc surface to form the limiting part.

[0010] In a preferred embodiment, a rubber pad is provided on the outer end of the clamping plate.

[0011] In a preferred embodiment, the clamping member is a clamping rod, which is a straight plate. The middle part of the clamping rod is rotatably connected to the slot. One end of the clamping rod facing the inside of the connector is a straight surface to form the clamping part, and the other end of the clamping rod facing the inside of the connector is a straight surface to form the limiting part.

[0012] In a preferred embodiment, the periphery of the clamping ring is provided with a snap-fit ​​groove that matches the limiting portion.

[0013] In a preferred embodiment, one end of the straight plate facing the inside of the connector is provided with a barb.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] In use, the user inserts the wire through the connector, rotates the clamping member at a large angle so that its clamping part faces the clamping ring, clamping the wire onto the surface of the wire. Then, the clamping ring is rotated to move towards the limiting part of the clamping needle until the entire clamping ring is moved to the outside of the clamping needle, thus limiting the position of the clamping needle. Through the linkage of the connector, clamping member, clamping ring, and other components, the wire is clamped and held, ensuring the stable fixation of the wire by the wiring device and improving the reliability and safety of wiring during photovoltaic electrical testing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the assembly structure of the junction box and the first connector in the wiring device for photovoltaic electrical testing according to one embodiment of the present invention;

[0017] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0018] Figure 3 This is a schematic diagram of the clamping pin in the wiring device for photovoltaic electrical testing according to one embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the assembly structure of the junction box and the second connector in the wiring device for photovoltaic electrical testing according to one embodiment of the present invention;

[0020] Figure 5 for Figure 4 A magnified view of a section at point B in the middle;

[0021] Figure 6 This is a schematic diagram of the structure of the limiting plate in the wiring device for photovoltaic electrical testing according to one embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the assembly structure of the junction box and the third connector in the wiring device for photovoltaic electrical testing according to one embodiment of the present invention;

[0023] Figure 8 for Figure 7 A magnified view of a section at point C;

[0024] Figure 9 This is a schematic diagram of the structure of the limiting rod in the wiring device for photovoltaic electrical testing according to one embodiment of the present invention;

[0025] Legend:

[0026] 1. Junction box; 2. Clamping pin; 201. First connector; 202. Slot; 203. Sharp part; 204. Rotating shaft; 205. First clamping ring; 3. Clamping plate; 301. Second connector; 302. Rubber pad; 303. Rounded part; 304. Friction groove; 305. Second clamping ring; 4. Clamping rod; 401. Third connector; 402. Barb; 403. Third clamping ring; 404. Snap-fit ​​groove. Detailed Implementation

[0027] 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.

[0028] Example 1:

[0029] Please see Figures 1 to 3 This embodiment provides a wiring device for photovoltaic electrical testing that facilitates the limiting of the wire body. The specific idea is as follows:

[0030] The wiring device for photovoltaic electrical testing includes a junction box 1. In addition, the wiring device for photovoltaic electrical testing also includes a first connector 201 fixedly connected to one side of the junction box 1. The outer left end of the first connector 201 is threaded with a first limiting ring 205. At the same time, a clamping pin 2 is rotatably disposed on the first connector 201. By rotating the clamping pin 2 and limiting its position by the first limiting ring 205, the wire body can be limited. At the same time, pulling the wire body will make the limiting function of the clamping pin 2 more secure.

[0031] Specifically, the first connector 201 is fixedly connected to the outer side of one end of the junction box 1 for passing the wire through its inner side. Multiple slots 202 are spaced circumferentially at the right end of the outer side of the first connector 201. A first limiting ring 205 is threadedly connected to the outer side of the first connector 201. The slots 202 on the first connector 201 are used to install clamping pins 2. The clamping pins 2 are triangular prisms used to limit the wire. A rotating shaft 204 is fixedly connected to the outer side of the clamping pin 2. The clamping pin 2 is connected to the first connector 201 via the rotating shaft 204. A sharp point 203 is provided at the end of the clamping pin 2. By inserting the sharp point 203 of the clamping pin 2 into the wire for limiting, and with the rotating shaft 204 located away from the sharp point 203, the clamping pin 2 can rotate at a large angle to insert into the wire.

[0032] In the specific implementation process: When using the device, the user inserts the cable through the first connector 201. At this time, the clamping needle 2 is rotated at a large angle until the sharp part 203 is rotated towards the first limiting ring 205. At this time, the sharp part 203 is inserted into part of the cable. The user can rotate the first limiting ring 205, and the first limiting ring 205 moves towards the clamping needle 2, while clamping and limiting the cable until the first limiting ring 205 moves to contact the end opposite to the clamping needle 2 and the sharp part 203, thereby limiting the position of the clamping needle 2. If the cable is pulled outward, it will drive the clamping needle 2 to rotate, thereby making the clamping needle 2 inserted deeper and thus limiting it more firmly.

[0033] Example 2:

[0034] Please see Figures 4 to 6 This embodiment provides a wiring device for photovoltaic electrical testing that facilitates the limiting of the wire body. The specific idea is as follows:

[0035] The wiring device for photovoltaic electrical testing includes a junction box 1. In addition, the wiring device for photovoltaic electrical testing also includes a second connector 301 fixedly connected to one side of the junction box 1. The outer side of the second connector 301 is threaded with a second limiting ring 305. At the same time, a limiting plate 3 is rotatably provided on the second connector 301. By rotating the limiting plate 3 and limiting it with the second limiting ring 305, the wire body can be limited.

[0036] Specifically, the second connector 301 is fixedly connected to the outer side of one end of the junction box 1 for passing the wire through its inner side. The outer right end of the second connector 301 has multiple slots 202 spaced around its circumference. A limiting plate 3 is rotatably connected in the slots 202. The limiting plate 3 is a fan-shaped plate for limiting the wire. The second limiting ring 305 is threaded to the outer side of the second connector 301. A smooth part 303 is connected to one side of the limiting plate 3. One side of the smooth part 303 can contact the inner side of the second limiting ring 305. A rubber pad 302 is connected to the outer end of the limiting plate 3 to increase friction with the hand, making it easier for the user to press the smooth part 303 to rotate the second limiting ring 305. A friction groove 304 is opened on the side of the limiting plate 3 opposite to the smooth part 303 to increase the friction between the limiting plate 3 and the wire.

[0037] In the specific implementation process: When using the device, the user inserts the cable through the second connector 301. At this time, the second limiting ring 305 is rotated, causing the second limiting ring 305 to move towards the limiting plate 3 until the inner side of the second limiting ring 305 abuts against the smooth part 303 on one side of the limiting plate 3. The arc-shaped smooth part 303 can facilitate the second limiting ring 305 to squeeze it. As the second limiting ring 305 continues to move, the limiting plate 3 continues to rotate towards the inner side of the second connector 301 until the friction groove 304 on the limiting plate 3 firmly clamps the outer side of the cable, thereby limiting the cable and accommodating thinner cables.

[0038] Example 3:

[0039] Please see Figures 7 to 9 This embodiment provides a wiring device for photovoltaic electrical testing that facilitates locking of the device. The specific idea is as follows:

[0040] The wiring device for photovoltaic electrical testing includes a junction box 1. In addition, the wiring device for photovoltaic electrical testing also includes a third connector 401 fixedly connected to one side of the junction box 1. The outer left end of the third connector 401 is threaded with a third limiting ring 403. At the same time, a clamping rod 4 is rotatably provided on the first connector 201. By rotating the clamping rod 4 and limiting the position of the clamping rod 4 by the third limiting ring 403, the wire body can be limited. At the same time, pulling the wire body will make the limiting function of the clamping rod 4 more secure.

[0041] Specifically, the third connector 401 is fixedly connected to the outer side of one end of the junction box 1 for passing the wire through its inner side. The outer right end of the third connector 401 has multiple slots 202 spaced around its circumference. A clamping rod 4 is rotatably connected in the slot 202, and the middle part of the clamping rod 4 is rotatably connected in the slot 202. The clamping rod 4 is a straight plate for limiting the wire. The third limiting ring 403 is threaded to the outer side of the third connector 401. One end of the clamping rod 4 facing the inner end face of the third connector 401 is a straight surface to form a clamping part, and the other end of the clamping rod 4 facing the inner end face of the third connector 401 is a straight surface to form a limiting part. The periphery of the clamping ring 403 is provided with a snap-fit ​​groove 404 that matches the limiting part, and the end of the clamping rod 4 facing the inner end face of the third connector 401 is provided with a barb 402.

[0042] In the specific implementation process: When using the device, the user inserts the cable through the third connector 401. At this time, the user manually rotates the clamping rod 4, rotating one end of the clamping rod 4 towards the third limiting ring 403 to the outside of the third connector 401. The third limiting ring 403 is then rotated, and it is located inside the angle between the clamping rod 4 and the third connector 401. As the third limiting ring 403 continues to move, it will push up one end of the clamping rod 4, causing the other end of the clamping rod 4 to rotate inward. The barb 402 on the other side of the clamping rod 4 can clamp and limit the cable. At the same time, the end of the clamping rod 4 is inserted into the inside of the locking groove 404, which can prevent the third limiting ring 403 from rotating and lock the third limiting ring 403.

[0043] Working principle:

[0044] Based on Embodiment 1, when using this photovoltaic electrical testing wiring device, the user inserts the wire through the first connector 201, rotates the clamping pin 2 at a large angle and turns the sharp part 203 toward the first clamping ring 205, so that the sharp part 203 is inserted into part of the wire. The user then rotates the first clamping ring 205 to move it toward the clamping pin 2 and clamp the wire until the first clamping ring 205 is completely moved to the outside of the clamping pin 2, thus defining the position of the clamping pin 2. If the wire is pulled outward, it will cause the clamping pin 2 to rotate, thereby increasing the insertion depth of the clamping pin 2 and making the clamping more secure. The advantage of this design is that through the linkage of components such as the first connector 201, the clamping pin 2, the sharp part 203, and the first clamping ring 205, the clamping of the wire is achieved. When subjected to outward pulling force, the insertion depth can be automatically deepened, enhancing the clamping firmness. During operation, the rotation and movement of each component work together to ensure the stable fixation of the wire by the wiring device, improving the reliability and safety of wiring during photovoltaic electrical testing.

[0045] Based on Example 2, when the user uses the photovoltaic electrical testing wiring device, the wire is passed through the second connector 301, and the second clamping ring 305 is rotated to move towards the clamping plate 3 until the inner side of the second clamping ring 305 abuts against the smooth part 303 on one side of the clamping plate 3. The smooth part 303 with its arc structure facilitates the compression of the second clamping ring 305. As the second clamping ring 305 continues to move, the clamping plate 3 rotates inward until the friction groove 304 on one side of the clamping plate 3 firmly clamps the outer side of the wire to achieve clamping, and can accommodate thinner wires. The advantage of this design is that through the coordinated translation and rotation of components such as the second connector 301, the second clamping ring 305, the clamping plate 3, the smooth part 303, and the friction groove 304, and with the squeezing and guiding effect of the arc-shaped smooth part 303, the friction groove 304 can accurately clamp the wire. This not only achieves reliable clamping, but also improves the applicability of the wiring device and the stability of the wire fixation by adapting the structure to finer wires.

[0046] Based on Example 3, when using this photovoltaic electrical testing wiring device, the user inserts the wire through the third connector 401, manually rotates the clamping rod 4 so that one end moves to the outside of the third connector 401, and then rotates the third clamping ring 403. The movement of the third clamping ring 403 within the angle between the clamping rod 4 and the third connector 401 lifts one end of the clamping rod 4, causing the other end of the clamping rod 4 to rotate, allowing the barb 402 to clamp the wire. The third clamping ring 403 is then locked by engaging the end of the clamping rod 4 into the locking groove 404. The advantage of this design is that the coordinated rotation and locking of components such as the third connector 401, clamping rod 4, third clamping ring 403, barb 402, and locking groove 404 achieves a stable clamping of the wire, while simultaneously locking the critical component, the third clamping ring 403. This ensures that the wire is securely fixed and the structure is stable during photovoltaic electrical testing, effectively improving the safety and reliability of the testing operation.

[0047] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A wiring device for photovoltaic electrical testing, characterized in that, include: Junction box; A connector is provided on the junction box, and the side of the connector away from the junction box has slots spaced around it circumferentially. A clamping member is rotatably disposed in the slot. The clamping member is provided with a clamping part and a limiting part. When the clamping member rotates, the clamping part extends into or out of the slot, and the limiting part rotates in the opposite direction to the clamping part. A clamping ring, threadedly connected to the connector, is used to limit the reverse rotation of the limiting portion extending beyond the slot.

2. The wiring device for photovoltaic electrical testing according to claim 1, characterized in that, The clamping element is a clamping pin, which is a triangular prism. The sharp end of the clamping pin forms the clamping part, and the opposite end of the sharp end forms the limiting part.

3. The wiring device for photovoltaic electrical testing according to claim 2, characterized in that, The clamping member is provided with a rotating shaft in the portion between the clamping part and the limiting part, and the clamping member is connected to the connector through the rotating shaft.

4. The wiring device for photovoltaic electrical testing according to claim 1, characterized in that, The clamping member is a clamping plate, which is a fan-shaped plate. The inner end of the clamping plate is rotatably connected to the slot. The end face of the clamping plate facing the inside of the connector is a straight surface to form the clamping part, and the end face of the clamping plate facing away from the inside of the connector is an arc surface to form the limiting part.

5. The wiring device for photovoltaic electrical testing according to claim 4, characterized in that, The clamping plate has a friction groove on its end face facing the inside of the connector.

6. The wiring device for photovoltaic electrical testing according to claim 4, characterized in that, A rubber pad is provided on the outer end of the clamping plate.

7. The wiring device for photovoltaic electrical testing according to claim 1, characterized in that, The clamping member is a clamping rod, which is a straight plate. The middle part of the clamping rod is rotatably connected to the slot. One end of the clamping rod facing the inside of the connector is a straight surface to form the clamping part, and the other end of the clamping rod facing the inside of the connector is a straight surface to form the limiting part.

8. The wiring device for photovoltaic electrical testing according to claim 7, characterized in that, The clamping ring has a snap-fit ​​groove on its periphery that matches the limiting part.

9. The wiring device for photovoltaic electrical testing according to claim 7 or 8, characterized in that, The straight plate has a barb on one end of its end face facing the inside of the connector.

Images