Junction box for solar photovoltaic panel

Abstract

The utility model provides a junction box for a solar photovoltaic panel, and relates to the technical field of solar photovoltaic panels, the junction box comprises a box body, a box cover, wiring terminals and connecting screws, the two sides of the bottom of the box body are symmetrically provided with assembling plates, and clamping mechanisms are arranged between the assembling plates and the bottom of the box body; the two assembling plates are fixed on a support of a solar photovoltaic panel through bolts, the groove is made of elastic plastic and has elasticity, the elastic clamp on one side of each assembling plate is inserted into the clamping groove, the inner wall of the clamping groove extrudes the elastic clamp to contract inwards firstly, the elastic clamp passes through the interior of the clamping groove, and the elastic clamp is clamped in the clamping groove. And then the elastic clamp automatically resets and is clamped with the positioning frame into a whole so as to fix the assembly plates at the bottom of the box body, then the two assembly plates at the other side are clamped into the bottoms of the assembly plates, and the two assembly plates are fixed on a bracket of a solar photovoltaic panel by using another bolt so as to completely fix the junction box on the solar photovoltaic panel. And the installation process of the junction box is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of solar photovoltaic panels, in particular to a junction box for solar photovoltaic panels. Background Technique

[0002] The junction box for solar photovoltaic panels is an important device in the solar photovoltaic system that connects the solar cell module matrix and the solar charging control device. It plays a key role in connecting and protecting the solar photovoltaic components. According to different materials and uses, the solar photovoltaic junction box can be divided into various types, such as crystalline silicon junction boxes, amorphous silicon junction boxes, curtain wall junction boxes, etc.;

[0003] When the junction box is connected to the solar photovoltaic panel, it basically uses an assembly plate, screws to connect with the solar photovoltaic panel. However, during the installation process, it is necessary to align all four installation holes in advance, and then use screws to fix the assembly plate and the solar photovoltaic panel together. One hand needs to hold the junction box, and the other hand can operate, which makes the installation process too cumbersome. Therefore, the utility model proposes a junction box for solar photovoltaic panels to solve the above problems. Content of the Utility Model

[0004] In view of the above problems, the utility model proposes a junction box for solar photovoltaic panels to solve the problem that in the prior art, when the junction box is in use, one hand needs to hold the junction box, and the other hand can operate, which makes the installation process too cumbersome.

[0005] To achieve the purpose of the utility model, the utility model is realized through the following technical solutions: A junction box for solar photovoltaic panels, including a box body, a box cover, a terminal block, and connection screws. The box cover is provided on the top of the box body. The terminal blocks are symmetrically arranged inside the box body. The connection screws are provided on the top of the box body. On both sides of the bottom of the box body, assembly plates are symmetrically arranged. A clamping mechanism is provided between the assembly plates and the bottom of the box body.

[0006] Further improvement lies in: The clamping mechanism includes a positioning frame, a card slot, an elastic card, and a groove. On both sides of the bottom of the box body, a group of positioning frames are symmetrically arranged. On one side of the positioning frame, card slots are symmetrically arranged. On one side of the assembly plate, elastic cards are symmetrically and fixedly connected. One end of the elastic card is clamped and connected with the inner wall of the card slot. A groove is provided inside the elastic card.

[0007] Further improvement lies in: One end of the elastic card is provided with a triangular structure. The width of one end of the elastic card is greater than the width of the card slot. One side of the assembly plate is in close contact with the inner side of the positioning frame.

[0008] A further improvement lies in that: countersunk holes are symmetrically arranged on both sides of the box cover, fixing screws are arranged inside the countersunk holes, and the box cover is detachably connected to the box body through the fixing screws.

[0009] A further improvement lies in that: limiting frames are symmetrically arranged on both sides inside the box body, a plurality of arc-shaped grooves are arranged inside the limiting frames, and the limiting frames are detachably connected to the inside of the box body through assembly screws.

[0010] A further improvement lies in that: round holes are symmetrically arranged on both sides of the box body, a sealing piece is fixedly connected inside the round holes through a thin rod, and a converging component is also arranged inside the round holes.

[0011] A further improvement lies in that: the converging component includes a clamping cylinder, a threaded surface, a retaining disc, a nut and a clamping sleeve. The clamping cylinder is clamped inside the round hole, the threaded surface is arranged on the outer side of the clamping cylinder, one end of the clamping cylinder is fixedly connected with the retaining disc, the diameter of the retaining disc is larger than the diameter of the round hole, and the nut and the clamping sleeve are respectively threadedly connected to the outer side of the clamping cylinder through the threaded surface.

[0012] The beneficial effects of the present utility model are as follows: Two assembly plates are fixed on the bracket of the solar photovoltaic panel by bolts. The material of the groove is elastic plastic, which has its own elasticity. The elastic card on one side of the assembly plate is inserted into the inside of the card slot. First, the inner wall of the card slot squeezes the elastic card to contract inward, allowing the elastic card to pass through the inside of the card slot, and then the elastic card automatically resets and is clamped with the positioning frame as a whole to fix the assembly plate at the bottom of the box body. Then, the other two assembly plates on the other side are clamped into the bottom of the assembly plate, and the other bolts are used to fix these two assembly plates on the bracket of the solar photovoltaic panel to completely fix the junction box on the solar photovoltaic panel, making the process of installing the junction box more convenient. Description of the Drawings

[0013] Figure 1 is the internal structure schematic diagram of the present utility model;

[0014] Figure 2 is the closed state schematic diagram of the present utility model;

[0015] Figure 3 is the structural schematic diagram of the converging component of the present utility model;

[0016] Figure 4 is the bottom view of the present utility model;

[0017] Figure 5 is the present utility model Figure 4 partial enlarged view of part A.

[0018] Wherein: 1. Box body; 2. Box cover; 3. Connecting screw; 4. Fixing screw; 5. Assembly plate; 6. Positioning frame; 7. Card slot; 8. Elastic card; 9. Groove; 10. Bundling component; 11. Clamping cylinder; 12. Threaded surface; 13. Stop disc; 14. Nut; 15. Clamping sleeve; 16. Limit frame; 17. Sealing piece; 18. Terminal; 19. Round hole. Specific implementation manner

[0019] In order to deepen the understanding of the present utility model, the following will further describe the present utility model in conjunction with embodiments. These embodiments are only used to explain the present utility model and do not constitute a limitation on the protection scope of the present utility model.

[0020] According to Figures 1-5 As shown, this embodiment proposes a junction box for a solar photovoltaic panel, including a box body 1, a box cover 2, a terminal 18 and a connecting screw 3. A box cover 2 is provided at the top of the box body 1. Terminals 18 are symmetrically arranged inside the box body 1. A connecting screw 3 is provided at the top of the box body 1. Assembly plates 5 are symmetrically arranged on both sides of the bottom of the box body 1. A clamping mechanism is provided between the assembly plate 5 and the bottom of the box body 1. The connecting wire of the solar photovoltaic panel is connected to the terminal 18 through the connecting screw 3. Then, the box cover 2 is fixed on the top of the box body 1. Next, bolts are used to fix the two assembly plates 5 on the bracket of the solar photovoltaic panel. The box body 1 and the assembly plate 5 are clamped together through the clamping mechanism. Then, the other two assembly plates 5 on the other side are clamped into the bottom of the assembly plate 5, and another bolt is used to fix these two assembly plates 5 on the bracket of the solar photovoltaic panel to completely fix the junction box on the solar photovoltaic panel.

[0021] The clamping mechanism includes a positioning frame 6, a card slot 7, an elastic card 8 and a groove 9. A group of positioning frames 6 are symmetrically arranged on both sides of the bottom of the box body 1. Card slots 7 are symmetrically arranged on one side of the positioning frame 6. Elastic cards 8 are symmetrically and fixedly connected to one side of the assembly plate 5. One end of the elastic card 8 is clamped and connected to the inner wall of the card slot 7. A groove 9 is provided inside the elastic card 8.

[0022] One end of the elastic card 8 is provided with a triangular structure. The width of one end of the elastic card 8 is greater than the width of the card slot 7. One side of the assembly plate 5 is in close contact with the inner side of the positioning frame 6.

[0023] The material of the groove 9 is set as elastic plastic, which has its own elasticity. The elastic card 8 on one side of the assembly plate 5 is inserted into the inside of the card slot 7. First, the inner wall of the card slot 7 squeezes the elastic card 8 to contract inward to allow the elastic card 8 to pass through the inside of the card slot 7. Then, the elastic card 8 automatically resets and is clamped with the positioning frame 6 as a whole to fix the assembly plate 5 at the bottom of the box body 1. The groove 9 can provide sufficient space for the elastic card 8 to expand and contract.

[0024] Both sides of the box cover 2 are symmetrically provided with countersunk holes, and a fixing screw 4 is arranged inside the countersunk holes. The box cover 2 is detachably connected to the box body 1 through the fixing screw 4. The box cover 2 is covered on the top of the box body 1, and the fixing screw 4 is screwed into the inside of the countersunk hole. One end of the fixing screw 4 penetrates through the inside of the box cover 2 and the box body 1 to fix the box cover 2 on the top of the box body 1.

[0025] On both sides inside the box body 1, there are symmetrically arranged limiting frames 16. A plurality of arc grooves are arranged inside the limiting frames 16. The limiting frames 16 are detachably connected to the inside of the box body 1 through assembly screws. A plurality of solar photovoltaic panel connecting wires are inserted into the inside of the box body 1, and multiple connecting wires can be engaged with the arc grooves inside the limiting frames 16. The arc grooves can separate the multiple connecting wires to prevent the multiple connecting wires from being wound around each other and arranged disorderly inside the box body 1.

[0026] On both sides of the box body 1, there are symmetrically arranged round holes 19. A sealing piece 17 is fixedly connected inside the round holes 19 through a thin rod. A bundling component 10 is also arranged inside the round holes 19. When the bundling component 10 has not been installed on both sides of the box body 1, the sealing piece 17 can be pressed inward against the box body 1 to break the thin rod, so as to remove the sealing piece 17 from both sides of the box body 1 and expose the round holes 19.

[0027] The bundling component 10 includes a clamping cylinder 11, a threaded surface 12, a retaining disc 13, a nut 14, and a clamping sleeve 15. The clamping cylinder 11 is engaged inside the round hole 19. The threaded surface 12 is arranged on the outer side of the clamping cylinder 11. One end of the clamping cylinder 11 is fixedly connected with the retaining disc 13, and the diameter of the retaining disc 13 is larger than the diameter of the round hole 19. The nut 14 and the clamping sleeve 15 are respectively threadedly connected to the outer side of the clamping cylinder 11 through the threaded surface 12. One end of the clamping cylinder 11 is inserted through the inside of the round hole 19 and arranged on the outer side of the box body 1. Then the nut 14 is tightened on the outer side of the clamping cylinder 11, and the box body 1 is clamped on one side through the nut 14 and the retaining disc 13 to fix the clamping cylinder 11 on one side of the box body 1. After multiple connecting wires pass through the inside of the clamping cylinder 11, the clamping sleeve 15 is tightened on one end of the clamping cylinder 11, and the conical inner wall of the clamping sleeve 15 will squeeze one end of the clamping cylinder 11 to contract inward, so as to contract multiple connecting wires into one strand, which is convenient for sorting out multiple connecting wires.

[0028] For the junction box used for the solar photovoltaic panel, two assembly plates 5 are fixed on the bracket of the solar photovoltaic panel by bolts. The material of the groove 9 is set as elastic plastic, which has its own elasticity. The elastic card 8 on one side of the assembly plate 5 is inserted into the inner part of the card slot 7. First, the inner wall of the card slot 7 squeezes the elastic card 8 to contract inward to allow the elastic card 8 to pass through the inner part of the card slot 7, and then the elastic card 8 automatically resets and engages with the positioning frame 6 to form a whole, so as to fix the assembly plate 5 at the bottom of the box body 1. Then, the other two assembly plates 5 are snapped into the bottom of the assembly plate 5, and these two assembly plates 5 are fixed on the bracket of the solar photovoltaic panel by additional bolts, so as to completely fix the junction box on the solar photovoltaic panel, making the process of installing the junction box more convenient.

[0029] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A junction box for a solar photovoltaic panel, comprising a box body (1), a box cover (2), a terminal (18) and a connecting screw (3), characterized in that: A box cover (2) is provided at the top of the box body (1). Terminal blocks (18) are symmetrically arranged inside the box body (1). Connecting screws (3) are provided at the top of the box body (1). Assembly plates (5) are symmetrically arranged on both sides of the bottom of the box body (1). A clamping mechanism is provided between the assembly plate (5) and the bottom of the box body (1). The clamping mechanism includes a positioning frame (6), a clamping groove (7), an elastic clamp (8) and a groove (9). A group of positioning frames (6) are symmetrically arranged on both sides of the bottom of the box body (1). Clamping grooves (7) are symmetrically arranged on one side of the positioning frame (6). Elastic clamps (8) are symmetrically and fixedly connected to one side of the assembly plate (5). One end of the elastic clamp (8) is clamped and connected to the inner wall of the clamping groove (7). A groove (9) is provided inside the elastic clamp (8).

2. The junction box for a solar photovoltaic panel according to claim 1, characterized in that: One end of the elastic clamp (8) is provided with a triangular structure. The width of one end of the elastic clamp (8) is greater than the width of the clamping groove (7). One side of the assembly plate (5) is in close contact with the inner side of the positioning frame (6).

3. The junction box for a solar photovoltaic panel according to claim 1, characterized in that: Counterbore holes are symmetrically arranged on both sides of the box cover (2). Fixing screws (4) are arranged inside the counterbore holes. The box cover (2) is detachably connected to the box body (1) through the fixing screws (4).

4. The junction box for a solar photovoltaic panel according to claim 1, wherein: Limit frames (16) are symmetrically arranged on both sides inside the box body (1). A plurality of arc grooves are provided inside the limit frames (16). The limit frames (16) are detachably connected to the inside of the box body (1) through assembly screws.

5. The junction box for a solar photovoltaic panel according to claim 1, wherein: Round holes (19) are symmetrically arranged on both sides of the box body (1). A sealing piece (17) is fixedly connected inside the round hole (19) through a thin rod. A bundling assembly (10) is also provided inside the round hole (19).

6. The junction box for a solar photovoltaic panel according to claim 5, characterized in that: The bundling assembly (10) includes a clamping cylinder (11), a threaded surface (12), a stop disc (13), a nut (14) and a clamping sleeve (15). The clamping cylinder (11) is clamped inside the round hole (19). The threaded surface (12) is arranged on the outer side of the clamping cylinder (11). A stop disc (13) is fixedly connected to one end of the clamping cylinder (11). The diameter of the stop disc (13) is greater than the diameter of the round hole (19). The nut (14) and the clamping sleeve (15) are respectively threadedly connected to the outer side of the clamping cylinder (11) through the threaded surface (12).

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