A busbar protection structure

Abstract

The utility model provides a kind of confluence box protection structure, belong to confluence box technical field, including confluence box body;Wiring protection assembly is located at the bottom of the confluence box body;The wiring protection assembly includes: protective sleeve and connecting sleeve one, the protective sleeve is below connecting sleeve one, and protective sleeve and connecting sleeve one are fixedly connected;Inner ring groove is opened in the inner side wall of the protective sleeve;Two support blocks are located in the inner side wall of the inner ring groove;Fan-shaped plate is rotated between two support blocks;The utility model is turned up after being pressed by cable pressure that fan-shaped plate is penetrated, and the deformation stretching capacity of elastic rubber strip is filled between adjacent two fan-shaped plates, and elastic rubber sheet is filled in the gap between inclined section and inner ring groove, can effectively shield the gap that becomes larger, avoid the problem that insects enter confluence box body after gap is generated, to avoid internal element and cable damage inside confluence box body.

Description

Technical Field

[0001] This utility model belongs to the field of junction box technology, and specifically relates to a junction box protective structure. Background Technology

[0002] Outdoor photovoltaic power generation arrays typically use combiner boxes as transit points to aggregate multiple cables. Currently used combiner boxes have cable inlets at the bottom, and all cables enter from the bottom of the combiner box.

[0003] During actual installation, there is a gap between the cable connected to the bottom of the combiner box and the cable inlet. Due to the gap, insects can easily enter the combiner box through the gap, which can easily damage the internal components and cables of the combiner box. The cable inlet at the bottom of the combiner box lacks protection.

[0004] Therefore, a protective structure for the junction box is proposed. Summary of the Invention

[0005] This utility model provides a junction box protection structure, the purpose of which is to solve the problems mentioned above.

[0006] This utility model provides a junction box protection structure, including a junction box body; a wiring protection assembly disposed at the bottom of the junction box body; the wiring protection assembly includes: a protective sleeve and a connecting sleeve, the protective sleeve being located below the connecting sleeve and the protective sleeve and the connecting sleeve being fixedly connected; an inner annular groove formed on the inner sidewall of the protective sleeve; two support blocks disposed on the inner sidewall of the inner annular groove; a sector plate rotatably disposed between the two support blocks; a torsion spring disposed between the outer sidewall of one side of the sector plate and the inner sidewall of the inner annular groove; a limiting block disposed on the inner sidewall of the inner annular groove near the lower part of the sector plate; an inner groove formed on the outer sidewall of one side of the sector plate; an elastic rubber strip disposed on the inner sidewall of the inner groove; a beveled section formed on the outer sidewall of one side of the sector plate near the inner groove; an elastic rubber sheet disposed between the beveled section and the inner sidewall of the inner annular groove; and a sphere rollingly embedded in the arc groove on the sector plate.

[0007] Furthermore, a second connecting sleeve is provided at the bottom of the junction box body, and the second connecting sleeve and the first connecting sleeve are connected by a threaded connection, and the second connecting sleeve is connected to the internal space of the junction box body;

[0008] By adopting the above technical solution, the wiring protection component and the junction box body are installed through a screw-on connection, which facilitates the installation and removal of the wiring protection component.

[0009] Furthermore, the included angle between the two side walls of the sector plate is 60 degrees, and a total of six sector plates are provided. The six sector plates are axially and equally spaced on the inner side wall of the inner ring groove, and the elastic rubber strip is provided between two adjacent sector plates.

[0010] By adopting the above technical solution, the six sector plates can fully cover the protective sleeve, thereby preventing gaps in the protective sleeve that allow insects to enter. The six sector plates can also rotate independently, thus providing space for cable access. The elastic rubber strip is used to fill the gap between two sector plates, preventing gaps between the two sector plates from causing insects to enter.

[0011] Furthermore, the elastic rubber sheet is fan-shaped, and one outer wall of the elastic rubber sheet is attached to the inner side wall of the inner annular groove, while the other two outer walls of the elastic rubber sheet are attached to the oblique sections on the adjacent fan-shaped plates.

[0012] By adopting the above technical solution, the elastic rubber sheet can fill the gap between the oblique section and the inner ring groove through its deformation capability, thus blocking the gap and preventing insects from entering the main body of the junction box.

[0013] Furthermore, the torsion spring is sleeved on the connecting shaft at the connection between the support block and the sector plate, and one end of the torsion spring is embedded in the outer wall of the sector plate, while the other end of the torsion spring is embedded in the inner wall of the inner ring groove.

[0014] By adopting the above technical solution, the elastic deformation capability of the torsion spring can be used to make the sector plate rotate when it is compressed, and return to its original rotation after the pressure is removed.

[0015] Furthermore, an arc groove is provided on the outer wall of the sector plate to allow the ball to roll.

[0016] By adopting the above technical solution, the rolling characteristics of the ball are utilized to reduce the friction when the sector plate contacts the cable, thereby facilitating the insertion and extraction of the cable.

[0017] The beneficial effects of this utility model are as follows:

[0018] This invention utilizes the upward rotation of the fan-shaped plates under the pressure of the inserted cable. The elastic rubber strips, which are stretched and deformed, fill the gaps between adjacent fan-shaped plates, and the elastic rubber sheets, which fill the gaps between the oblique sections and the inner ring grooves. This effectively blocks the enlarged gaps, preventing insects from entering the combiner box body and thus avoiding damage to the internal components and cables of the combiner box body. It also protects the cable inlet at the bottom of the combiner box body. The rolling characteristics of the spheres reduce the friction between the fan-shaped plates and the cables, making it easier for the cables to be inserted and removed.

[0019] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the wiring protection component structure according to an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the protective sleeve structure according to an embodiment of the present utility model;

[0024] Figure 4 This is a cross-sectional view of the protective sleeve according to an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the sector plate structure according to an embodiment of the present utility model;

[0026] Reference numerals in the attached drawings: 1. Combiner box body; 2. Wiring protection assembly; 21. Protective sleeve; 22. Connecting sleeve one; 23. Inner ring groove; 24. Support block; 25. Sector plate; 251. Inner groove; 252. Elastic rubber strip; 253. Beveled section; 254. Elastic rubber sheet; 26. Torsion spring; 27. Limiting block; 28. Ball; 3. Connecting sleeve two. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] Reference Figure 1-5This utility model embodiment proposes a junction box protection structure, including a junction box body 1, a connecting sleeve 2 3 provided at the bottom of the junction box body 1, a connecting sleeve 1 22 of the wiring protection component 2 provided at the lower position of the junction box body 1, the connecting sleeve 2 3 provided at the bottom of the junction box body 1, the connecting sleeve 2 3 and the connecting sleeve 1 22 are connected by a threaded connection, and the connecting sleeve 2 3 is connected to the internal space of the junction box body 1. The connection by the threaded connection realizes the installation between the wiring protection component 2 and the junction box body 1, which facilitates the installation and removal of the wiring protection component 2.

[0029] A protective sleeve 21 is provided at the bottom of the connecting sleeve 22. An inner annular groove 23 is formed on the inner wall of the protective sleeve 21. Six sets of support blocks 24 are provided on the inner wall of the inner annular groove 23, with two blocks in each set. A sector plate 25 is rotatably connected between two support blocks 24. The included angle between the two side walls of the sector plate 25 is 60 degrees, and a total of six sector plates 25 are provided. The six sector plates 25 are axially and equally spaced on the inner wall of the inner annular groove 23. The six sector plates 25 can fully cover the protective sleeve 21, thus preventing gaps in the protective sleeve 21 that could allow insects to enter. The six sector plates 25 can also rotate independently, providing space for cable insertion. A torsion joint is provided between the outer wall of the sector plate 25 and the inner wall of the inner annular groove 23. Force spring 26 and torsion spring 26 are sleeved on the connecting shaft at the connection between support block 24 and sector plate 25. One end of torsion spring 26 is embedded in the outer wall of sector plate 25, and the other end of torsion spring 26 is embedded in the inner wall of inner ring groove 23. By utilizing the elastic deformation capability of torsion spring 26, sector plate 25 can rotate after being compressed and return to rotation after the pressure is released. Limit block 27 is provided on the inner wall of inner ring groove 23 near the lower part of sector plate 25. A ball 28 is rolled into the arc surface on sector plate 25. An arc groove for the ball 28 to roll is opened on the outer wall of sector plate 25. By utilizing the rolling characteristics of ball 28, the friction force when sector plate 25 contacts cable is reduced, thereby facilitating cable insertion and extraction.

[0030] Two symmetrical grooves 251 are provided on the outer wall of the fan-shaped plate 25. Each groove 251 has an elastic rubber strip 252 on its inner wall. The elastic rubber strip 252 is positioned between two adjacent fan-shaped plates 25, utilizing its deformation and stretching capabilities to fill the space between the two plates and prevent gaps from forming that could allow insects to enter. A beveled section 253 is provided on the outer wall of the fan-shaped plate 25 near the grooves 251. An elastic rubber sheet 254 is provided between the outer wall and the inner wall of the inner ring groove 23. The elastic rubber sheet 254 is fan-shaped, and one side of the outer wall of the elastic rubber sheet 254 is attached to the inner wall of the inner ring groove 23. The other two sides of the outer wall of the elastic rubber sheet 254 are attached to the oblique section 253 on the adjacent fan-shaped plate 25. The elastic rubber sheet 254 can fill the gap between the oblique section 253 and the inner ring groove 23 through its deformation ability, thus blocking the gap and preventing the gap from causing insects to enter the main body of the confluence box 1.

[0031] The specific implementation method is as follows: When wiring, the connecting sleeve 22 is screwed onto the connecting sleeve 3, and the cable is passed through the protective sleeve 21 and then inserted into the junction box body 1 for wiring. When the cable is inserted into the protective sleeve 21, the cable contacts the sector plate 25 and applies pressure to it. The cable pushes the sector plate 25 to rotate, and the sector plate 25 rotates upward. At this time, the torsion spring 26 is compressed, and the ball 28 on the sector plate 25 fits against the outer wall of the cable. When the sector plate 25 rotates upward to a certain angle, a gap is generated between the sector plates 25. The deformation and stretching ability of the elastic rubber strip 252 is used to fill the gap between the two sector plates 25. The deformation ability of the elastic rubber sheet 254 can be used to fill the gap between the inclined section 253 and the inner ring groove 23, and the gap is blocked to prevent the gap from causing insects to enter the junction box body 1.

[0032] When the cable needs to be disassembled, the cable is pulled out vertically downwards. The rolling characteristics of the ball 28 reduce the friction between the cable and the sector plate 25 when the cable is pulled out. When the cable is pulled out, the sector plate 25 loses the squeezing force. Under the elastic deformation capability of the torsion spring 26, the sector plate 25 returns to its original position and rotates downwards. Under the limit of the limit block 27, the sector plate 25 remains in a horizontal state, thus blocking the protective sleeve 21 and preventing insects from passing through the protective sleeve 21 and entering the junction box body 1.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A junction box protection structure, characterized in that: Including the junction box body (1); Wiring protection assembly (2) is provided at the bottom of the junction box body (1); The wiring protection assembly (2) includes: a protective sleeve (21) and a connecting sleeve (22), wherein the protective sleeve (21) is located below the connecting sleeve (22), and the protective sleeve (21) and the connecting sleeve (22) are fixedly connected; An inner annular groove (23) is formed on the inner side wall of the protective sleeve (21); Two support blocks (24) are provided on the inner sidewall of the inner annular groove (23); A sector plate (25) that rotates between the two support blocks (24); A torsion spring (26) is provided between the outer wall of one side of the sector plate (25) and the inner wall of the inner annular groove (23); A limiting block (27) is provided on the inner sidewall of the inner annular groove (23) near the lower part of the sector plate (25); An inner groove (251) is formed on the outer wall of one side of the sector plate (25); An elastic rubber strip (252) is provided on the inner sidewall of the inner groove (251); A beveled section (253) is formed on one side of the outer wall of the fan-shaped plate (25) near the inner groove (251); An elastic rubber sheet (254) is disposed between the inclined section (253) and the inner sidewall of the inner annular groove (23); A sphere (28) is rolled and embedded in the arc groove on the sector plate (25).

2. The junction box protection structure according to claim 1, characterized in that: The bottom of the junction box body (1) is provided with a connecting sleeve two (3), and the connecting sleeve two (3) and the connecting sleeve one (22) are connected by a threaded engagement. The connecting sleeve two (3) is connected to the internal space of the junction box body (1).

3. The junction box protection structure according to claim 1, characterized in that: The included angle between the two side walls of the fan-shaped plate (25) is 60 degrees, and there are a total of six fan-shaped plates (25). The six fan-shaped plates (25) are arranged axially at equal intervals on the inner side wall of the inner ring groove (23), and the elastic rubber strip (252) is arranged between two adjacent fan-shaped plates (25).

4. The junction box protection structure according to claim 1, characterized in that: The elastic rubber sheet (254) is fan-shaped, and one side of the outer wall of the elastic rubber sheet (254) is attached to the inner side wall of the inner ring groove (23), while the other two sides of the outer wall of the elastic rubber sheet (254) are attached to the oblique section (253) on the adjacent fan-shaped plate (25).

5. The junction box protection structure according to claim 1, characterized in that: The torsion spring (26) is sleeved on the connecting shaft at the connection between the support block (24) and the sector plate (25), and one end of the torsion spring (26) is embedded in the outer wall of the sector plate (25), while the other end of the torsion spring (26) is embedded in the inner wall of the inner ring groove (23).

6. The junction box protection structure according to claim 1, characterized in that: The outer wall of the sector plate (25) is provided with an arc groove for the sphere (28) to roll.

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