A photovoltaic module junction box anti-loosening fixing device

Abstract

The utility model discloses a photovoltaic module junction box anti -loosening fixing device, including junction box, wherein the junction box inside middle position is equipped with the terminal, and the both ends of terminal are equipped with helical spring respectively, wherein helical spring below is equipped with sliding mechanism. The utility model discloses through setting terminal connection fixed wire in the junction box inside middle position, sets up helical spring respectively at the both ends of terminal, effectively reduces the possibility that wire loosens at the junction because of external force and pulls, has reduced the risk of wire drop, has guaranteed the stability of electric quantity delivery, through setting sliding mechanism below helical spring, when wire is subjected to wind power and so on external force and pulls, sliding mechanism drives helical spring telescopic, can effectively buffer the pulling strength of external force to wire, further avoids the loosening of wire and terminal junction because of excessive stress, has strengthened the stability and reliability of whole junction structure.

Description

Technical Field

[0001] This utility model relates to the field of wiring device technology, and in particular to a photovoltaic module junction box anti-loosening fixing device. Background Technology

[0002] Photovoltaic junction boxes are key components connecting solar cell arrays (composed of solar cell modules) to solar charging control devices, playing a crucial role in solar photovoltaic systems. Their main functions are to ensure reliable connection and effective protection of the solar photovoltaic modules, accurately transmitting the electrical energy generated by the solar cells to external lines, and ensuring stable current conduction from the photovoltaic modules. However, in existing technologies, after the junction box completes the wiring, the stress point of the wires is often concentrated at the connection point. When subjected to external forces such as wind, the connection between the wires and the junction box is prone to loosening. This not only increases the risk of wires falling off but also leads to unstable power transmission, affecting the normal operation of the entire photovoltaic system. Summary of the Invention

[0003] The purpose of this utility model is to provide a photovoltaic module junction box anti-loosening fixing device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A photovoltaic module junction box anti-loosening fixing device includes a junction box and further includes:

[0006] The terminal block is located in the middle of the junction box and is used to connect and fix the wires.

[0007] Two helical springs are provided, with the two helical springs respectively installed at both ends of the terminal to provide fixed support for the wires at the connection point;

[0008] A sliding mechanism is located below the helical spring. The sliding mechanism is fixedly connected to the helical spring and is used to drive the helical spring to extend and retract, so as to buffer the force of external force pulling the wire.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the helical spring has a through hole inside, through which the wire passes and is connected to the terminal block.

[0011] Furthermore, the helical spring is bent into a rectangular structure for fixing the wire.

[0012] Furthermore, the sliding mechanism includes:

[0013] The slide rail is fixedly connected to the bottom of the junction box.

[0014] A slider, positioned above and slidably connected to a slide rail; and

[0015] A limiting guide rod is disposed on one side of the slider, wherein one end of the limiting guide rod passes through the slider and is slidably connected to it; the other end of the limiting guide rod is fixedly connected to the inner wall of the junction box.

[0016] Furthermore, a support spring is sleeved on the outer wall of the limiting guide rod, one end of which is fixedly connected to the inner wall of the junction box, and the other end of which is connected to the slider.

[0017] Furthermore, an arc-shaped fixing plate is provided above the slider, which is used to firmly fix the helical spring to the slider so that the slider can drive the helical spring to extend and retract.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model connects and fixes the wire by setting a terminal block in the middle of the junction box, and setting a helical spring at both ends of the terminal block. The helical springs provide fixed support for the wire at the connection point, changing the situation of excessive concentration of force on the wire, making the force distribution of the wire more reasonable, effectively reducing the possibility of the wire loosening at the connection point due to external pulling, reducing the risk of wire falling off, and ensuring the stability of power transmission. By setting a sliding mechanism below the helical spring, when the wire is pulled by external forces such as wind, the sliding mechanism drives the helical spring to extend and retract, which can effectively buffer the pulling force on the wire, further preventing the connection between the wire and the terminal block from loosening due to excessive force, and enhancing the stability and reliability of the entire wiring structure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the junction box of this utility model;

[0021] Figure 3 This is a schematic diagram of the connection between the practical helical spring and the sliding mechanism;

[0022] Figure 4 This is a schematic diagram of the structure of the helical spring of this utility model;

[0023] Figure 5 This is a schematic diagram of the sliding mechanism of this utility model.

[0024] The components include: 1. Junction box; 2. Terminal block; 3. Wire; 4. Helical spring; 5. Sliding mechanism; 501. Slide rail; 502. Slider; 503. Limiting guide rod; 504. Support spring; 6. Wire hole; 7. Arc-shaped fixing plate. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings.

[0026] Please refer to the following: Figures 1 to 5 To achieve the above objectives, this utility model provides the following technical solution:

[0027] A photovoltaic module junction box anti-loosening fixing device includes a junction box 1, and further includes:

[0028] Terminal 2 is located in the middle of the junction box 1, and terminal 2 is used to connect wire 3;

[0029] Two helical springs 4 are provided, with the two helical springs 4 respectively installed at both ends of the terminal 2 to provide fixed support for the wire 3;

[0030] The sliding mechanism 5 is located below the helical spring 4. The sliding mechanism 5 is fixedly connected to the helical spring 4 and is used to drive the helical spring 4 to extend and retract, so as to buffer the force of external force pulling the wire 3.

[0031] During connection, firstly, the photovoltaic module wire 3 to be connected is introduced into the junction box 1 through the connection port. Then, part of the wire 3 is passed through the wire hole 6 inside the helical spring 4, allowing the helical spring 4 to wrap around the wire 3, enhancing its fixing effect. Next, one end of the wire 3 passing through the wire hole 6 is connected to the terminal 2, ensuring a secure connection and good conductivity. When the photovoltaic module is affected by external forces such as wind, the wire 3 will experience tensile force, which will be transmitted to the wire 3 inside the junction box 1. The tensile force is then transmitted through the wire 3 to the helical spring 4. Since the sliding mechanism 5 is fixedly connected to the helical spring 4, the wire 3... The sliding mechanism 5 drives the helical spring 4 to extend and retract. During the extension and retraction process, the helical spring 4 undergoes elastic deformation, generating a spring force opposite to the direction of the external force. This spring force can buffer the pulling force of the external force on the wire 3. Through the buffering effect of the helical spring 4, the force on the wire 3 at the terminal 2 is dispersed and reduced, preventing the wire 3 from loosening due to excessive local force. After the above anti-loosening treatment, the connection between the wire 3 and the terminal 2 remains stable, and the current generated by the photovoltaic module can be stably transmitted to the external line through the wire 3, ensuring the normal operation of the entire photovoltaic system and the stable supply of electricity.

[0032] In a preferred embodiment, this utility model can be further configured as follows: Figure 3 , Figure 4 As shown; the helical spring 4 has a wire hole 6 inside, through which the wire 3 passes and is connected to the terminal 2.

[0033] By setting a wire hole 6 inside the helical spring 4 and allowing the wire 3 to pass through it and connect to the terminal 2, the force mode of the wire 3 in the junction box 1 is changed by combining the characteristics of the helical spring 4 itself, thus preventing the wire 3 from loosening at the terminal 2 due to external pulling. At the same time, the wire hole 6 inside the helical spring 4 plays a role in wrapping and fixing the wire 3. After the wire 3 passes through the wire hole 6, it forms a certain friction and constraint with the helical spring 4, which restricts the shaking and displacement of the wire 3 in the junction box 1.

[0034] When the wire 3 is pulled by an external force (such as wind or mechanical vibration), the tension will first act on the coil spring 4. The coil spring 4 is elastic and will undergo elastic deformation according to Hooke's Law, that is, the spring will be stretched or compressed. During this process, the coil spring 4 will generate a spring force in the opposite direction to the external force. This spring force can buffer the direct pull of the external force on the wire 3, reduce the tension on the wire 3, and thus reduce the risk of loosening at the connection between the wire 3 and the terminal 2.

[0035] In a preferred embodiment, this utility model can be further configured as follows: Figure 3 , Figure 4 As shown; the helical spring 4 is bent into a rectangular structure, and the multiple bends of the helical spring 4 can provide all-round constraint on the wire 3, which can better restrict the movement of the wire 3 and prevent the wire 3 from twisting, tangling or falling out of the fixed position under complex external forces; when the wire 3 passes through the interior of the helical spring 4 or is wrapped by it, the helical spring 4 generates an initial clamping force due to its own elasticity, which firmly fixes the wire 3 near the terminal 2; this initial clamping force can prevent the wire 3 from shaking or displacing in its natural state, ensuring the stable connection between the wire 3 and the terminal 2; when the wire 3 is subjected to tension, the helical spring 4 will undergo elastic deformation. Due to its rectangular structure, the spring can provide a relatively uniform support force in the direction of force, and buffer the external force through its own elastic deformation, thereby reducing the actual tension on the wire 3, thus preventing the connection between the wire 3 and the terminal 2 from loosening or breaking due to excessive force.

[0036] In a preferred embodiment, this utility model can be further configured as follows: Figure 5 As shown; the sliding mechanism 5 includes:

[0037] Slide rail 501, wherein slide rail 501 is fixedly connected to the bottom of junction box 1;

[0038] Slider 502 is disposed above and slidably connected to slide rail 501; and

[0039] A limiting guide rod 503 is disposed on one side of the slider 502. One end of the limiting guide rod 503 passes through the slider 502 and is slidably connected to it, while the other end of the limiting guide rod 503 is fixedly connected to the inner wall of the junction box 1. The main function of the limiting guide rod 503 is to limit the sliding range of the slider 502 on the slide rail 501, preventing the slider 502 from disengaging from the slide rail 501 due to excessive external force or system failure, thereby avoiding damage to the wire 3 and related components. When the slider 502 slides to the limit position set by the limiting guide rod 503, the limiting guide rod 503 will prevent the slider 502 from continuing to slide, thus playing a safety protection role.

[0040] When the photovoltaic module is operating normally, the wire 3 is in a relatively stable state, the slider 502 is stationary at the initial position of the slide rail 501, and components such as the helical spring 4 also maintain their initial elastic state. When the wire 3 is pulled by an external force, the wire 3 will cause the components connected to the slider 502 to move, and the slider 502 will begin to slide along the slide rail 501. At the same time, the helical spring 4 will stretch and deform as the slider 502 moves, generating an elastic reaction force to buffer the external force. During the sliding process of the slider 502, the limiting guide rod 503 will limit the sliding range of the slider 502 in real time to ensure that the slider 502 does not exceed the safe stroke. When the external force disappears, the elastic force of the helical spring 4 will cause the slider 502 to return to the initial position, and the wire 3 will also return to a stable state. The entire sliding mechanism 5 completes a buffering and adjustment process against the external force, ensuring the connection stability and reliability of the wire 3 in the photovoltaic module junction box 1.

[0041] In a preferred embodiment, this utility model can be further configured as follows: Figure 5 As shown; a support spring 504 is sleeved on the outer wall of the limiting guide rod 503. One end of the support spring 504 is fixedly connected to the inner wall of the junction box 1, and the other end of the support spring 504 is connected to the slider 502. During the sliding of the slider 502, the support spring 504 and the helical spring 4 work together. When the wire 3 is subjected to tension, causing the slider 502 to slide outward, the support spring 504 is stretched, generating an elastic tension force opposite to the direction of the tension force. At the same time, the helical spring 4 may also be stretched or compressed, generating a corresponding elastic force. The elastic forces of the two springs work together to buffer the influence of external forces on the slider 502 and the wire 3, making the sliding of the slider 502 smoother and reducing impact and vibration. The support spring 504 can adjust the restoring force of the slider 502 according to the sliding position and force of the slider 502. When the external force disappears, the elastic forces of the support spring 504 and the helical spring 4 will make the slider 502 quickly and smoothly return to the initial position, ensuring that the wire 3 also returns to a stable state, and ensuring that the entire sliding mechanism 5 can quickly resume normal operation.

[0042] In a preferred embodiment, this utility model can be further configured as follows: Figure 5As shown, an arc-shaped fixing plate 7 is provided above the slider 502. The arc-shaped fixing plate 7 is used to firmly fix the helical spring 4 to the slider 502 so that the slider 502 can drive the helical spring 4 to extend and retract. The shape of the arc-shaped fixing plate 7 matches the outer contour of the helical spring 4, so that the inner wall of the arc-shaped fixing plate 7 can fit tightly against the helical spring 4. By means of bolt connection or buckle, the arc-shaped fixing plate 7 firmly fixes the helical spring 4 to the slider 502, ensuring that the helical spring 4 will not separate from the slider 502 or slide relative to it during the sliding process of the slider 502, and ensuring that the slider 502 can accurately drive the helical spring 4 to extend and retract.

[0043] When the photovoltaic module is operating normally, the wire 3 is in a relatively stable state, the slider 502 is stationary at the initial position of the slide rail 501, and the helical spring 4 and the support spring 504 also maintain their initial elastic state. The arc-shaped fixing plate 7 firmly fixes the helical spring 4 to the slider 502. When the wire 3 is pulled by an external force, the wire 3 causes the parts connected to the slider 502 to move, and the slider 502 begins to slide outward along the slide rail 501. At this time, the helical spring 4 and the support spring 504 deform simultaneously. The helical spring 4 expands and contracts according to the force, and the support spring 504 is stretched. The two together generate an elastic reaction force to buffer the external force. When the external force disappears, the elastic force of the helical spring 4 and the support spring 504 causes the slider 502 to quickly return to its initial position, and the wire 3 also returns to a stable state. The entire sliding mechanism 5 completes a buffering and adjustment process for external forces, ensuring the connection stability and reliability of the wire 3 in the photovoltaic module junction box 1.

[0044] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A photovoltaic module junction box anti-loosening fixing device, comprising a junction box (1), characterized in that, Also includes: Terminal (2) is located in the middle of the junction box (1), and terminal (2) is used to connect wire (3); Two helical springs (4) are provided, with the two helical springs (4) respectively set at both ends of the terminal (2) to provide fixed support for the wire (3); A sliding mechanism (5) is set below the helical spring (4), wherein the sliding mechanism (5) is fixedly connected to the helical spring (4) and is used to drive the helical spring (4) to extend and retract, so as to buffer the force of external force pulling the wire (3).

2. The photovoltaic module junction box anti-loosening fixing device according to claim 1, characterized in that, The helical spring (4) has a wire hole (6) inside, and the wire (3) passes through the wire hole (6) and is connected to the terminal (2).

3. The photovoltaic module junction box anti-loosening fixing device according to claim 2, characterized in that, The helical spring (4) is bent into a rectangular structure to fix the wire (3).

4. The photovoltaic module junction box anti-loosening fixing device according to claim 1, characterized in that, The sliding mechanism (5) includes: Slide rail (501), wherein slide rail (501) is fixedly connected to the bottom of junction box (1); A slider (502) is disposed above and slidably connected to the slide rail (501); and A limiting guide rod (503) is set on one side of the slider (502), wherein one end of the limiting guide rod (503) passes through the slider (502) and is slidably connected to it; the other end of the limiting guide rod (503) is fixedly connected to the inner wall of the junction box (1).

5. The photovoltaic module junction box anti-loosening fixing device according to claim 4, characterized in that, The outer wall of the limiting guide rod (503) is fitted with a support spring (504), one end of the support spring (504) is fixedly connected to the inner wall of the junction box (1), and the other end of the support spring (504) is connected to the slider (502).

6. The photovoltaic module junction box anti-loosening fixing device according to claim 4, characterized in that, An arc-shaped fixing plate (7) is provided above the slider (502), wherein the arc-shaped fixing plate (7) is used to firmly fix the helical spring (4) on the slider (502) so that the slider (502) can drive the helical spring (4) to extend and retract.

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