Junction tool of junction box

Abstract

The utility model discloses a wiring tool for a junction box, and the tool comprises a pedestal which is provided with a first space for the placement of the junction box; the clamping block is arranged in the first space, the clamping block is provided with a second space for a cable of the junction box to penetrate through, a first through hole penetrating through the base in the vertical direction is formed in the position, corresponding to the base in the vertical direction of the second space, of the base, and the first through hole is communicated with the second space.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic technology, specifically to a junction box wiring tool. Background Technology

[0002] A photovoltaic (PV) junction box is a component specifically designed for solar photovoltaic (PV) power generation systems, playing a crucial role in connecting and protecting electrical components. The PV junction box is responsible for transmitting the electrical energy generated by the solar cell modules to other parts of the system, such as inverters or batteries, thereby ensuring that current can be efficiently drawn from the PV array and put into use.

[0003] Photovoltaic junction boxes transmit power between solar panels and inverters or batteries via cables. The cables are electrically connected to the electrical components inside the junction box, and then secured to the box using clips. Currently, the cable connection method is as follows: First, the cable core is flattened into a square shape using a crimping tool to facilitate electrical connection to the electrical components; second, a groove is cut into the junction box, through which the cable passes, and the flattened cable core is electrically connected to the electrical components via resistance welding; finally, clips secure the connection to the junction box. However, this connection method, relying on clips to secure the cable, prevents a complete seal at the clip positions inside the junction box, reducing the waterproof performance of the photovoltaic junction box and making it susceptible to environmental factors such as rain, dust, and extreme temperatures.

[0004] Highly waterproof photovoltaic (PV) junction boxes provide protection for offshore PV power generation systems. Compared to onshore junction boxes, these boxes must withstand much harsher environments, including high salt spray corrosion, high humidity, wave impact, and strong ultraviolet radiation. Therefore, these junction boxes must be designed and manufactured with higher levels of sealing and insulation to ensure complete internal sealing, prevent moisture penetration, adapt to the high humidity of the marine environment, and ensure electrical safety.

[0005] High-waterproof photovoltaic junction boxes cannot secure cables with clips; instead, they use threads to lock the cables to the junction box. However, during the tightening process, the cables may rotate slightly, causing the compressed cable core to not fit properly with the electrical components inside the junction box, thus affecting the resistance welding effect.

[0006] Therefore, there is an urgent need for a junction box wiring tool that can improve the shortcomings of existing wiring methods, thereby improving wiring efficiency and quality and ensuring the safety and reliability of electrical connections. Summary of the Invention

[0007] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a junction box wiring tool.

[0008] To solve the above-mentioned technical problems, the first aspect of this utility model provides a junction box wiring tool including:

[0009] A base, wherein the base has a first space for placing a junction box;

[0010] A clamping block is disposed in the first space. The clamping block has a second space through which the cables of the junction box can pass. A first through hole is opened at the base corresponding to the vertical direction of the second space, and the first through hole communicates with the second space.

[0011] In one embodiment, the clamping block is made of a high-temperature resistant, non-conductive material.

[0012] In one embodiment, at least a portion of the clamping block is embedded inside the base, and a third space is provided within a first space of the base for at least a portion of the clamping block to be embedded.

[0013] In one embodiment, the base has a protrusion, and the protrusion is hollow to form the third space.

[0014] In one embodiment, at least a portion of the clamping block is engaged within the third space of the protrusion and is fixedly connected to the protrusion.

[0015] In one embodiment, the first space is configured to conform to the shape of the junction box, and the first space is formed by a side wall disposed on the side and a bottom wall disposed at the bottom. When the junction box is placed in the first space, the junction box abuts against the bottom wall of the base.

[0016] In one embodiment, the clamping block includes a clamping block base and a pair of clamping arms, the clamping block base and the pair of clamping arms are integrally formed, the outer surface of the clamping block base abuts against the protrusion, and a gap is formed between the pair of clamping arms, which is the second space.

[0017] In one embodiment, the clamping block base has a second through hole penetrating the clamping block base, and the second space, the second through hole, the first space, and the first through hole are connected.

[0018] In one embodiment, the first through hole, the second through hole, and the second space are arranged in a continuous manner from bottom to top, and the centers of the three are on the same vertical line.

[0019] In one embodiment, the base has a groove that connects the outside world to the first space, and the locking device for the cable is located in the groove.

[0020] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0021] 1. By designing a novel junction box wiring tool for crimping junction boxes with connected cables, this invention optimizes the production process of first connecting the cables to the junction box, then crimping the cables and connecting them to electrical components. This avoids the previous method of first crimping the cables and connecting them to electrical components, which inevitably causes cable displacement and loosening of the connection between the cables and electrical components. Therefore, this invention optimizes the junction box wiring tool, resulting in more reliable junction box quality and improved production efficiency.

[0022] 2. By setting clamps, the cables are fixed and positioned, which facilitates the accuracy of pressing and prevents the cables from moving during the pressing process, thus reducing the finished product qualification rate. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram showing the base and clamping block separated in one embodiment of the present utility model;

[0024] Figure 2 This is a perspective view of the junction box wiring tool in one embodiment of the present utility model;

[0025] Figure 3 This is a top view of the junction box wiring tool according to one embodiment of the present utility model;

[0026] Figure 4 for Figure 3 A cross-sectional view along the AA direction;

[0027] Figure 5 This is a three-dimensional schematic diagram of a junction box in one embodiment of the present invention, in which the cable has not yet been crimped.

[0028] Figure 6 This is an exploded view of the junction box in one embodiment of the present invention;

[0029] Figure 7 This is a three-dimensional schematic diagram of a junction box wiring tool connected to and pressed into a junction box according to an embodiment of the present invention.

[0030] Figure 8 This is a top view of a junction box wiring tool connected to and pressed into a junction box according to an embodiment of the present invention.

[0031] Figure 9 This utility model Figure 8 A cross-sectional view along the BB direction;

[0032] Figure 10 This is a three-dimensional schematic diagram of a junction box in one embodiment of the present invention, wherein the cable has been crimped and connected to the electrical components.

[0033] The attached icon is labeled as follows:

[0034] 1-Base; 11-First space; 12-Bottom wall; 13-First through hole; 14-Third space; 141-Bottom wall of third space; 15-Protrusion; 16-Groove; 17-Annular side wall; 2-Clamping block; 21-Second space; 22-Clamping block base; 23-Clamping arm; 24-Second through hole; 3-Junction box; 31-Cable locking device; 32-Perforation; 4-Cable; 41-Cable inner core; 5-Electrical component; 6-Square pressing device; 61-First end; 62-Second end. Detailed Implementation

[0035] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is for the purpose of aiding understanding the present invention, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] See Figure 1-10 As shown, the junction box wiring tool of this utility model includes a base and a clamping block.

[0037] The base 1 has a first space 11. Specifically, in one embodiment, the first space 11 is open upward and recessed downward, and is formed by an annular sidewall 17 on the side and a bottom wall 12 at the bottom. The base 1 has a groove 16, which connects the outside to the first space 11. In one embodiment, the groove 16 is located on the right side of the base 1, and is formed by a U-shaped wall that runs through the left and right directions.

[0038] The base 1 also includes a third space 14 located within the first space 11. At least a portion of the bottom wall 12 protrudes to form a protrusion 15, and the protrusion 15 is partially hollow to form the third space 14. A first through hole 13 is provided at the bottom of the base 1, and the first through hole 13 and the third space 14 are connected vertically. In one embodiment, the cross-sectional area of ​​the third space 14 in the horizontal direction is larger than the cross-sectional area of ​​the first through hole 13 in the horizontal direction, forming a bottom wall 141 of the third space extending in the horizontal direction.

[0039] The clamping block 2 includes a clamping block base 22 and a pair of clamping arms 23. The pair of clamping arms 23 are respectively disposed on the clamping block base 22 in the front-back direction. The clamping block base 22 and the pair of clamping arms 23 are integrally formed. A gap is formed between the pair of clamping arms 23. The gap is through in the left-right direction and opens upward, which is the second space 21. A second through hole 24 is provided at the bottom of the clamping block base 22. The second through hole 24 is disposed through the second space 21 in the vertical direction.

[0040] At least part of the clamping block 2 is embedded in the third space 14 inside the base 1. In one embodiment, the bottom of the clamping block 2 abuts against the bottom wall 141 of the third space. The clamping block 2 is locked in the third space 14 of the protrusion 15 and is fixedly connected to the protrusion 15. Specifically, it can be fixed by screws or by interference fit to ensure that the clamping block 2 will not loosen during use. A pair of clamping arms 23 protrude above the third space 14. The second space 21, the second through hole 24, and the first through hole 13 are arranged from top to bottom. In one embodiment, the centers of the three are on the same vertical line.

[0041] In one embodiment, the clamping block 2 is made of a high-temperature resistant, non-conductive material, specifically ceramic, to facilitate the subsequent pressing process.

[0042] like Figure 5-6 As shown, in one embodiment, the junction box 3 is provided with a cable locking device 31. The junction box 3 is elliptical in shape and hollow inside, which can be used to place electrical components 5 and at least part of the cables 4. A through hole 32 is provided on the right side of the junction box 3 for the cable 4 to pass through. The inside of the cable locking device 31 is provided with a thread that mates with the outside of the through hole 32. The cable 4 passes through the cable locking device 31 and is fixedly connected to the through hole 32 by the cable locking device 31. In one embodiment, the cable locking device 31 can be a nut. By providing this type of cable locking device 31, the sealing performance of the junction box 3 is better, which is suitable for use in scenarios such as rain, dust, and extreme temperatures. In other embodiments, the junction box 3 can also be provided with a junction box groove (not shown in the figure) for the cable 4 to pass through. In this case, the cable locking device 31 can also lock the cable 4 to the junction box 3 by means of a buckle or the like.

[0043] The first space 11 is set in a shape that matches the junction box 3. When the junction box 3 is placed in the first space, the bottom of the junction box 3 abuts against the bottom wall 12 of the base 1, and the side of the junction box 3 abuts against the annular side wall 17 of the base 1. The cable locking device 31 is placed in the groove 16. The cable 4 passes through the second space 21 in the horizontal direction. The left end of the cable 4 is located in the vertical direction at the second space 21, the second through hole 24, the first space 11, and the first through hole 13.

[0044] The following describes the wiring method of the junction box wiring tool using this utility model, specifically including the following steps:

[0045] S1: Strip the insulation of cable 4 to expose part of the inner core 41 of the cable. The inner core 41 of the cable is usually copper wire.

[0046] S2: Junction box 3 is provided with through hole 32 or junction box groove. Cable 4 passes through through hole 32 or junction box groove of junction box 3. Cable locking device 31 fixes cable 4 to junction box 3.

[0047] S3: Junction box 3 is placed in the first space 11 of junction box wiring tool, cable locking device 31 is located on groove 16, and cable core 41 is located in the second space 21;

[0048] S4: The first end 61 of the pressing device 6 passes through the first through hole 13 and presses against the bottom of the inner core 41 of the cable. The second end 62 of the pressing device 6 extends to the top of the inner core 41 of the cable. The first end 61 and the second end 62 of the pressing device 6 extrude the inner core 41 of the cable at high temperature to complete the pressing and forming.

[0049] S5: Install electrical component 5 inside junction box 3, and connect the pressed cable 4 to electrical component 5 by resistance welding.

[0050] Therefore, the junction box wiring tool of this utility model can be used to press the junction box. First, the cable can be fixed on the junction box body by the cable locking device. At this time, the cable locking device, such as the nut, will cause the cable to rotate relative to the junction box body. After the cable locking device is fixedly connected to the junction box body, the inner core of the cable located in the second space is pressed and resistance soldered to the electrical components. After completion, the junction box can be easily removed from the junction box wiring tool for the next step.

[0051] In the description of this utility model, the directions such as "front," "back," "left," "right," "up," and "down" are defined with reference to the direction observed by the user when using the junction box and wiring tools of this utility model. Figure 3 As shown in the figure, the left side is "front", the right side is "back", the top side is "left", the bottom side is "right", and the direction perpendicular to the viewpoint is "up" and "down". The above definitions of directions are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0052] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A terminal block wiring tool, characterized by, include: The base (1) has a first space (11) for placing the junction box (3); The clamp (2) is located in the first space (11). The clamp (2) has a second space (21) through which the cable (4) of the junction box (3) can pass. The second space (21) has a first through hole (13) that passes through the base (1) in the vertical direction at the corresponding position of the base (1) in the vertical direction. The first through hole (13) is connected to the second space (21).

2. The junction box wiring tool of claim 1, wherein: The clamp (2) is made of a high-temperature resistant, non-conductive material.

3. The junction box wiring tool of claim 1, wherein: At least a portion of the clamping block (2) is embedded inside the base (1), and the first space (11) of the base (1) is provided with a third space (14) into which at least a portion of the clamping block (2) can be embedded.

4. The junction box wiring tool of claim 3, wherein: The base (1) has a protrusion (15) inside, and the protrusion (15) is hollow to form the third space (14).

5. The junction box wiring tool of claim 4, wherein: At least part of the clamp (2) is engaged in the third space (14) of the protrusion (15) and is fixedly connected to the protrusion (15).

6. The junction box wiring tool of claim 1, wherein: The first space (11) is configured to match the shape of the junction box (3). The first space (11) is formed by a side wall (17) on the side and a bottom wall (12) on the bottom. When the junction box (3) is placed in the first space (11), the junction box (3) abuts against the bottom wall (12) of the base (1).

7. The junction box wiring tool of claim 4, wherein: The clamping block (2) includes a clamping block base (22) and a pair of clamping arms (23). The clamping block base (22) and the pair of clamping arms (23) are integrally formed. The outer surface of the clamping block base (22) abuts against the protrusion (15). A gap is formed between the pair of clamping arms (23), which is the second space (21).

8. The junction box wiring tool of claim 7, wherein: The clamping block base (22) has a second through hole (24) that penetrates the clamping block base (22), and the first through hole (13), the second through hole (24) and the second space (21) are connected.

9. The junction box wiring tool of claim 8, wherein: The first through hole (13), the second through hole (24), and the second space (21) are arranged in a continuous manner from bottom to top, and the centers of the three are on the same vertical line.

10. The junction box wiring tool of claim 1, wherein: The base (1) is provided with a groove (16) that allows the outside world to communicate with the first space (11), and the locking device of the cable (4) is located in the groove (16).

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