Waterproof and dustproof photovoltaic junction box

Abstract

The utility model discloses a waterproof and dustproof photovoltaic junction box, which relates to the technical field of photovoltaic junction boxes and comprises a junction box body, and a junction box cover is inserted outside the top end of the junction box body. According to the utility model, through the arrangement of the junction box body, the junction box cover, the first sealing groove, the second sealing groove, the first insertion block, the first sealing strip, the second insertion block, the second sealing strip and the fixing bolt, the first insertion block is inserted into the first sealing groove firstly, and the side surface of the first insertion block is fixedly connected with the first sealing strip; in the inserting process, the first sealing strip is extruded, so that the first inserting block and the first sealing groove are more tightly attached, the preliminary sealing effect is achieved, in the same way, when the second inserting block is inserted into the second sealing groove, the multiple sealing effect of the photovoltaic junction box is achieved through the first inserting block and the second inserting block, and the sealing effect is improved. Water and dust are effectively prevented from entering the photovoltaic junction box, and the waterproof and dustproof effects of the photovoltaic junction box are improved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic junction box technology, and in particular to a waterproof and dustproof photovoltaic junction box. Background Technology

[0002] A photovoltaic junction box is a connecting device between a solar cell array composed of solar cell modules and a solar charging control device. Its main function is to connect and protect the solar photovoltaic modules, connect the power generated by the solar cells to external lines, and conduct the current generated by the photovoltaic modules.

[0003] A patent entitled "A Photovoltaic Junction Box" (patent application number: 202322769779.0) discloses a photovoltaic junction box, including a junction box body. Inlet pipes are fixedly installed on both sides of the junction box body. A cover is hinged to one side of the junction box body, and a snap-fit ​​mechanism is provided on one side of the cover. An adjusting screw is rotatably installed inside the lower part of the junction box body, and one side of the adjusting screw has a left-hand thread. Through the coordinated use of the junction box body, inlet pipes, adjusting screw, limiting rod, arc-shaped clamping plate, cover, first buckle, slot, micro cone, handle, fixing slot, rotating plate, positioning slot, spring, slider, fixing rod, positioning rod, fixing hole, and adjusting block, during clamping, the connection ends of the two cables will be located in the middle of the two arc-shaped clamping plates, and the micro cones located on both sides of the inner surface of the arc-shaped clamping plates will directly embed into the outermost layer of the cables.

[0004] During use, the aforementioned photovoltaic junction box, due to its hinged connection between the box body and the cover, is prone to gaps. This results in poor overall waterproofing and dustproofing, failing to adequately protect the internal components of the photovoltaic junction box. Therefore, it is necessary to propose a waterproof and dustproof photovoltaic junction box to solve these problems. Utility Model Content

[0005] The purpose of this utility model is to provide a waterproof and dustproof photovoltaic junction box to solve the problem mentioned in the background art that gaps easily form between the junction box body and the cover, which easily leads to poor overall waterproof and dustproof performance of the photovoltaic junction box and makes it difficult to provide good protection for the inside of the photovoltaic junction box.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a waterproof and dustproof photovoltaic junction box, comprising a junction box body, a junction box cover inserted into the outside of the top of the junction box body, and a wiring connection pipe fixedly connected to the inside of the side of the junction box body, wherein a connection cable is provided inside the wiring connection pipe.

[0007] The top of the junction box has a first sealing groove and a second sealing groove.

[0008] The bottom of the junction box cover is provided with a sealing plug assembly, which includes a first plug block, a first sealing strip, a second plug block, and a second sealing strip. The top of the first plug block is fixedly connected to the bottom of the junction box cover, and the side of the first plug block is fixedly connected to the side of the first sealing strip. The top of the second plug block is fixedly connected to the bottom of the junction box cover, and the side of the second plug block is fixedly connected to the side of the second sealing strip.

[0009] The wiring connector is equipped with a sealing and blocking component inside.

[0010] Preferably, the first insert block is inserted into the first sealing groove, and the second insert block is inserted into the second sealing groove.

[0011] Preferably, both the first sealing groove and the second sealing groove are rectangular grooves, and the second sealing groove is located inside the first sealing groove.

[0012] Preferably, the sealing and blocking assembly includes a rubber sealing ring, the outside of which is fixedly connected to the inside of the wiring connection pipe;

[0013] The number of rubber sealing rings is three, and the three rubber sealing rings are equidistantly distributed inside the wiring connection pipe.

[0014] Preferably, a fixing bolt is inserted into the side of the junction box cover, and a threaded hole is opened on the side of the junction box body, and the fixing bolt is threadedly connected to the threaded hole.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] 1. By setting up a junction box body, junction box cover, No. 1 sealing groove, No. 2 sealing groove, No. 1 plug, No. 1 sealing strip, No. 2 plug, No. 2 sealing strip, and fixing bolts, during the use of the photovoltaic junction box, the No. 1 plug is first inserted into the No. 1 sealing groove. Since the No. 1 sealing strip is fixedly connected to the side of the No. 1 plug, the No. 1 sealing strip will be squeezed during the insertion process, making the No. 1 plug and the No. 1 sealing groove fit more tightly, playing a preliminary sealing role. Similarly, when the No. 2 plug is inserted into the No. 2 sealing groove, since the No. 2 sealing strip is fixedly connected to the side of the No. 2 plug, the No. 2 sealing strip will be squeezed during the insertion process, making the No. 2 plug and the No. 2 sealing groove fit more tightly. Then, the fixing bolts are used to fix the junction box cover to the junction box body. The No. 1 plug and the No. 2 plug achieve a multi-seal effect for the photovoltaic junction box, effectively preventing water and dust from entering the interior of the photovoltaic junction box, and improving the waterproof and dustproof effect of the photovoltaic junction box.

[0017] 2. By configuring the junction box body, junction box cover, wiring connection pipe, rubber sealing rings, and connecting cables, during the use of the photovoltaic junction box, when the connecting cable causes one of the rubber sealing rings to deform due to shaking, the transmission of shaking force is reduced because the three rubber sealing rings are equidistantly distributed inside the wiring connection pipe and are not connected to each other. This prevents all rubber sealing rings from deforming, and the remaining rubber sealing rings continue to maintain the sealing performance of the photovoltaic junction box, thereby further improving the waterproof and dustproof effect of the photovoltaic junction box. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the waterproof and dustproof photovoltaic junction box in this utility model.

[0019] Figure 2 This is a schematic diagram of the junction box in this utility model.

[0020] Figure 3 This is a schematic diagram of the junction box cover in this utility model.

[0021] Figure 4 This is a cross-sectional view of the wiring connection pipe in this utility model.

[0022] In the diagram: 1. Junction box body; 2. Junction box cover; 3. No. 1 sealing groove; 4. No. 2 sealing groove; 5. No. 1 plug; 6. No. 1 sealing strip; 7. No. 2 plug; 8. No. 2 sealing strip; 9. Wiring connection pipe; 10. Rubber sealing ring; 11. Connecting cable; 12. Fixing bolt; 13. Threaded hole. Detailed Implementation

[0023] 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.

[0024] This utility model provides, for example Figures 1-4 The diagram shows a waterproof and dustproof photovoltaic junction box, comprising a junction box body 1, a junction box cover 2 inserted into the top of the junction box body 1, and a wiring connection pipe 9 fixedly connected to the inside of the side of the junction box body 1. A connecting cable 11 is installed inside the wiring connection pipe 9. A fixing bolt 12 is inserted into the side of the junction box cover 2, and a threaded hole 13 is provided on the side of the junction box body 1, with the fixing bolt 12 threadedly connected to the threaded hole 13. The fixing bolt 12 facilitates the fixation of the junction box body 1 and the junction box cover 2, improving the sealing performance of the photovoltaic junction box.

[0025] In addition, a first sealing groove 3 is opened inside the top of the junction box body 1, and a second sealing groove 4 is opened inside the top of the junction box body 1. A sealing plug assembly is provided at the bottom of the junction box cover 2. The sealing plug assembly includes a first plug 5, a first sealing strip 6, a second plug 7, and a second sealing strip 8. The top of the first plug 5 is fixedly connected to the bottom of the junction box cover 2, and the side of the first plug 5 is fixedly connected to the side of the first sealing strip 6. The top of the second plug 7 is fixedly connected to the bottom of the junction box cover 2, and the side of the second plug 7 is fixedly connected to the side of the second sealing strip 8. The first plug 5 is plugged into the first sealing groove 3, and the second plug 7 is plugged into the second sealing groove 4. Both the first sealing groove 3 and the second sealing groove 4 are rectangular grooves, and the second sealing groove 4 is located inside the first sealing groove 3. During the use of the photovoltaic junction box, firstly, insert the first plug 5 into the first sealing groove 3. Since the first sealing strip 6 is fixedly connected to the side of the first plug 5, the first sealing strip 6 will be squeezed during the insertion process, making the first plug 5 and the first sealing groove 3 fit more tightly, thus achieving a preliminary sealing effect. Similarly, when inserting the second plug 7 into the second sealing groove 4, since the second plug 7 is fixedly connected to the side of the second plug 7, the second sealing strip 8 will be squeezed during the insertion process, making the second plug 7 and the second sealing groove 4 fit more tightly. Through the first plug 5 and the second plug 7, the photovoltaic junction box achieves a multi-seal effect, effectively preventing water and dust from entering the interior of the photovoltaic junction box and improving the waterproof and dustproof effect of the photovoltaic junction box.

[0026] Finally, a sealing and blocking assembly is provided inside the wiring connection pipe 9. This assembly includes rubber sealing rings 10, which are fixedly connected to the interior of the wiring connection pipe 9. There are three rubber sealing rings 10, equidistantly distributed inside the wiring connection pipe 9. During the use of the photovoltaic junction box, if the connecting cable 11 deforms due to vibration, the equidistant distribution of the three rubber sealing rings 10 inside the wiring connection pipe 9, without any connection between them, reduces the transmission of vibration force, preventing all rubber sealing rings 10 from deforming. The remaining rubber sealing rings 10 continue to maintain the sealing performance of the photovoltaic junction box, thereby further improving its waterproof and dustproof effect.

[0027] Working principle: First, insert block 5 is inserted into the first sealing groove 3. Since the first sealing strip 6 is fixedly connected to the side of insert block 5, it is compressed during insertion, making insert block 5 and the first sealing groove 3 fit more tightly, achieving a preliminary seal. Similarly, when insert block 7 is inserted into the second sealing groove 4, since the second sealing strip 8 is fixedly connected to the side of insert block 7, it is compressed during insertion, making insert block 7 and the second sealing groove 4 fit more tightly. Through insert blocks 5 and 7, light is achieved... The multiple seals of the photovoltaic junction box effectively prevent water and dust from entering its interior, improving its waterproof and dustproof performance. Furthermore, when the connecting cable 11 vibrates and one of the rubber sealing rings 10 deforms, the transmission of vibration is reduced because the three rubber sealing rings 10 are equidistantly distributed inside the wiring pipe 9 and are not connected. This prevents all rubber sealing rings 10 from deforming, and the remaining rubber sealing rings 10 continue to maintain the sealing performance of the photovoltaic junction box, further enhancing its waterproof and dustproof performance.

Claims

1. A waterproof and dustproof photovoltaic junction box, comprising a junction box body (1), characterized in that: A junction box cover (2) is inserted into the outside of the top of the junction box body (1), and a wiring connection pipe (9) is fixedly connected to the inside of the side of the junction box body (1). A connection cable (11) is provided inside the wiring connection pipe (9). The junction box body (1) has a first sealing groove (3) inside its top end, and a second sealing groove (4) is provided inside its top end; The bottom of the junction box cover (2) is provided with a sealing plug assembly, which includes a first plug (5), a first sealing strip (6), a second plug (7) and a second sealing strip (8). The top of the first plug (5) is fixedly connected to the bottom of the junction box cover (2), and the side of the first plug (5) is fixedly connected to the side of the first sealing strip (6). The top of the second plug (7) is fixedly connected to the bottom of the junction box cover (2), and the side of the second plug (7) is fixedly connected to the side of the second sealing strip (8).

2. The waterproof and dustproof photovoltaic junction box according to claim 1, characterized in that: The first insert (5) is inserted into the first sealing groove (3), and the second insert (7) is inserted into the second sealing groove (4).

3. A waterproof and dustproof photovoltaic junction box according to claim 1, characterized in that: Both the first sealing groove (3) and the second sealing groove (4) are rectangular grooves, and the second sealing groove (4) is located inside the first sealing groove (3).

4. A waterproof and dustproof photovoltaic junction box according to claim 1, characterized in that: The wiring connection tube (9) is provided with a sealing and blocking assembly inside. The sealing and blocking assembly includes a rubber sealing ring (10), and the outside of the rubber sealing ring (10) is fixedly connected to the inside of the wiring connection tube (9). The number of rubber sealing rings (10) is three, and the three rubber sealing rings (10) are equidistantly distributed inside the wiring connection pipe (9).

5. A waterproof and dustproof photovoltaic junction box according to claim 1, characterized in that: A fixing bolt (12) is inserted into the side of the junction box cover (2), and a threaded hole (13) is opened on the side of the junction box body (1). The fixing bolt (12) is threadedly connected to the threaded hole (13).

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