A dedicated junction box for photovoltaic module monitoring

Abstract

This utility model belongs to the field of junction boxes, specifically relating to a dedicated junction box for monitoring photovoltaic modules. It includes a box body and a cover, which are interlocked. A wire-fixing mechanism is provided on the box body. A base is fixedly connected to the bottom inner side of the box body, and a clamp is fixedly connected to the upper end of the base. A square rod is fixedly connected to the upper end of the clamp, and a clamping block is slidably sleeved on the outer side of the square rod. A pad is fixedly connected to the upper end of the clamping block. An adjusting rod is mounted on the upper middle part of the base via a bearing. This utility model, by providing two clamps inside the box body, and clamping blocks that extend and retract via springs on the clamps, and a linkage plate controlled by the adjusting rod between the two clamps, with a top pin on the linkage plate, allows for simultaneous fixing of two wire harnesses after the wire harness is inserted into the area between the clamp and the clamping block.

Description

Technical Field

[0001] This utility model relates to the field of junction boxes, specifically a dedicated junction box for monitoring photovoltaic modules. Background Technology

[0002] A junction box for monitoring photovoltaic (PV) modules can prevent problems such as current overload, short circuit, and reverse connection in PV systems, protecting PV modules and other equipment from damage. A search revealed a utility model patent with authorization announcement number CN212463144U, which discloses an intelligent junction box capable of monitoring the operating parameters of PV modules. Addressing the issue that existing junction boxes often rely on bolts for fixing, making operation cumbersome, the following solution is proposed: It includes an L-shaped support plate with a protective cover movably connected to it. A fixing plate is fixedly installed on the top of the L-shaped support plate. A connecting groove is formed on one side of the fixing plate, and a connecting plate is fixedly installed on the bottom inner wall of the connecting groove. A pressure plate is slidably connected to the top inner wall of the connecting groove.

[0003] However, with existing junction boxes, the wiring harnesses are easily pulled out by external forces, causing them to loosen and become unstable. Furthermore, traditional junction boxes require bolts for fixation, with one bolt for each wiring harness, making the process cumbersome. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this utility model is to provide a dedicated junction box for monitoring photovoltaic modules, which solves the problems of unstable wiring and complicated wiring in some junction boxes.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dedicated junction box for monitoring photovoltaic modules, comprising a box body and a box cover, wherein the box body and the box cover are interlocked, a wire fixing mechanism is provided on the box body, a base is fixedly connected to the bottom inner side of the box body, a clamp is fixedly connected to the upper end of the base, a square rod is fixedly connected to the upper end of the clamp, a clamping block is slidably sleeved on the outer side of the square rod, a pad is fixedly connected to the upper end of the clamp, an adjusting rod is installed in the middle of the upper end of the base through a bearing, a linkage plate is threadedly connected to the outer side of the adjusting rod, a top pin is fixedly connected to the bottom of the linkage plate, and the top pin abuts against the pad.

[0006] Preferably, a retaining ring is fixedly connected to the top of the square rod, and a spring is sleeved on the outer side of the rod body. One end of the spring is fixedly connected to the retaining ring, and the other end of the spring is fixedly connected to the clamping block. The spring allows the elastic force to be applied to the clamping block.

[0007] Preferably, a knob is fixedly connected to the top of the adjusting rod, and the knob and the adjusting rod are an integral structure. The knob facilitates the rotation of the adjusting rod.

[0008] Preferably, a guide rod is fixedly connected to the upper end of the base, and the guide rod passes through the linkage plate and is slidably connected to the linkage plate. The guide rod guides the lifting and lowering of the linkage plate.

[0009] Preferably, the wire securing mechanism includes a wire threading nozzle fixedly connected to the junction box body, the nozzle penetrating the body. A threaded sleeve is threadedly connected to the outer side of the nozzle, and a rubber stopper is slidably connected to the inner side of the threaded sleeve. The rubber stopper is slidably connected to the inner side of the nozzle. A locking disc is fixedly connected to the outer side of the threaded sleeve, and a locking block is fixedly connected to the outer side of the junction box body. A locking pin is slidably connected to the inside of the locking block, and the locking pin is inserted into the locking disc. This wire securing mechanism effectively locks and prevents the wires leading out of the junction box from becoming loose.

[0010] Preferably, a second spring is provided inside the lock block. One end of the second spring is fixedly connected to the lock stop pin, and the other end of the second spring is fixedly connected to the inner surface of the lock block. The second spring allows elastic force to be applied to the lock stop pin.

[0011] Preferably, a lever is fixedly connected to the pin body of the locking pin, the lever passing through the locking block and slidably connected to the locking block. The lever facilitates the pulling of the locking pin.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model provides two clamping seats inside the box, and clamping blocks that extend and retract via springs on the clamping seats. In addition, a linkage plate that is controlled to rise and fall via an adjusting rod is provided between the two clamping seats, and a top pin is provided on the linkage plate. After the wire harness is inserted into the area between the clamping seat and the clamping block, the top pin on the linkage plate can press down the clamping block, thereby simultaneously fixing two wire harnesses, which is quite convenient.

[0014] 2. This utility model provides a wire-fixing mechanism on the box. After the photovoltaic module's wire harness is led out of the box, it passes through the wire-passing nozzle, threaded sleeve, and rubber plug in the wire-fixing mechanism. Then, by twisting the threaded sleeve, the rubber plug is deformed under force, thereby clamping the wire harness and improving the stability of the wire harness connection. In addition, the locking between the locking pin and the locking disc on the outside of the threaded sleeve can prevent the threaded sleeve from loosening, further ensuring the stability of the wire harness connection. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 For the present utility model Figure 1 A schematic diagram of the internal structure of the box;

[0017] Figure 3 For the present utility model Figure 1 Top sectional view of the partial structure;

[0018] Figure 4 For the present utility model Figure 3 A magnified view of the local structure;

[0019] Figure 5 For the present utility model Figure 1 The front sectional view.

[0020] In the diagram: 1. Box body; 2. Box cover; 3. Wire fixing mechanism; 4. Base; 5. Clamp; 6. Square rod; 7. Clamping block; 8. Pad block; 9. Retaining ring; 10. Spring 1; 11. Adjusting rod; 12. Linkage plate; 13. Top pin; 14. Knob; 15. Guide rod; 31. Wire threading nozzle; 32. Threaded sleeve; 33. Rubber plug; 34. Locking disc; 35. Locking block; 36. Locking stop pin; 37. Spring 2; 38. Toggle block. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1 , Figure 2 , Figure 5 A special junction box for monitoring photovoltaic modules includes a box body 1 and a box cover 2, which are interlocked. A base 4 is fixedly connected to the bottom inner side of the box body 1. A clamp 5 is fixedly connected to the upper end of the base 4. A square rod 6 is fixedly connected to the upper end of the clamp 5. A clamping block 7 is slidably sleeved on the outer side of the square rod 6. A pad 8 is fixedly connected to the upper end of the clamping block 7. An adjusting rod 11 is installed in the middle of the upper end of the base 4 through a bearing. A linkage plate 12 is threadedly connected to the outer side of the adjusting rod 11. A top pin 13 is fixedly connected to the bottom of the linkage plate 12, and the top pin 13 abuts against the pad 8.

[0023] Please see Figure 5A retaining ring 9 is fixedly connected to the top of the square rod 6. A spring 10 is sleeved on the outer side of the rod body of the square rod 6. One end of the spring 10 is fixedly connected to the retaining ring 9, and the other end of the spring 10 is fixedly connected to the clamping block 7. The spring 10 allows the elastic force to be applied to the clamping block 7. A knob 14 is fixedly connected to the top of the adjusting rod 11. The knob 14 and the adjusting rod 11 are an integral structure. The knob 14 facilitates the rotation of the adjusting rod 11. A guide rod 15 is fixedly connected to the upper end of the base 4. The guide rod 15 passes through the linkage plate 12 and is slidably connected to the linkage plate 12. The guide rod 15 guides the lifting and lowering of the linkage plate 12.

[0024] Please see Figures 1-4 A wire securing mechanism 3 is provided on the junction box 1. This mechanism locks the wires extending from the junction box to prevent them from loosening. The wire securing mechanism 3 includes a wire threading nozzle 31 fixedly connected to the junction box 1, extending through the box. A threaded sleeve 32 is threadedly connected to the outer side of the nozzle 31, and a rubber plug 33 is slidably connected to the inner side of the sleeve 32. The rubber plug 33 is slidably connected to the inner side of the nozzle 31. A locking disc 34 is fixedly connected to the outer side of the sleeve 32, and a locking block 35 is fixedly connected to the outer side of the junction box 1. A locking pin 36 is slidably connected inside the locking block 35, and the locking pin 36 is inserted into the locking disc 34. A second spring 37 is provided inside the locking block 35. One end of the second spring 37 is fixedly connected to the locking pin 36, and the other end is fixedly connected to the inner surface of the locking block 35. The spring 37 applies a spring force to the locking pin 36. A lever 38 is fixedly connected to the pin body of the locking pin 36. The lever 38 passes through the locking block 35 and is slidably connected to the locking block 35. The lever 38 facilitates the pulling of the locking pin 36.

[0025] The specific implementation process of this utility model is as follows: In use, firstly, the photovoltaic module's wiring harness is passed through the threading nozzle 31, the threaded sleeve 32, and the rubber plug 33, and finally inserted between the clamp 5 and the clamping block 7. Then, by rotating the adjusting rod 11 through the knob 14, the linkage plate 12 moves down through the threaded movement between it and the adjusting rod 11. Subsequently, the top pin 13 on the linkage plate 12 applies pressure to the pad 8 and the clamping block 7, thereby causing the clamping block 7 to move closer to the clamp 5, and together with the clamp 5, clamping and fixing the connector of the wiring harness, thus completing the wiring operation. Then, the threaded sleeve 32 is screwed on, causing the rubber plug 33 to deform under force, thereby clamping the wiring harness and improving the stability of the wiring harness during wiring. In addition, the locking between the locking pin 36 and the locking disc 34 on the outside of the threaded sleeve 32 can prevent the threaded sleeve 32 from loosening, further ensuring the stability of the wiring harness during wiring.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dedicated junction box for monitoring photovoltaic modules, comprising a box body (1) and a box cover (2), characterized in that: The box body (1) and the lid (2) are interlocked. A wire fixing mechanism (3) is provided on the box body (1). A base (4) is fixedly connected to the bottom inner side of the box body (1). A clamp (5) is fixedly connected to the upper end of the base (4). A square rod (6) is fixedly connected to the upper end of the clamp (5). A clamping block (7) is slidably sleeved on the outer side of the square rod (6). A pad (8) is fixedly connected to the upper end of the clamp (7). An adjusting rod (11) is installed in the middle of the upper end of the base (4) through a bearing. A linkage plate (12) is threadedly connected to the outer side of the adjusting rod (11). A top pin (13) is fixedly connected to the bottom of the linkage plate (12), and the top pin (13) abuts against the pad (8).

2. A dedicated junction box for monitoring photovoltaic modules according to claim 1, characterized in that: A retaining ring (9) is fixedly connected to the top of the square rod (6), and a spring (10) is sleeved on the outside of the rod body of the square rod (6). One end of the spring (10) is fixedly connected to the retaining ring (9), and the other end of the spring (10) is fixedly connected to the clamping block (7).

3. A dedicated junction box for monitoring photovoltaic modules according to claim 1, characterized in that: A knob (14) is fixedly connected to the top of the adjusting rod (11), and the knob (14) and the adjusting rod (11) are an integral structure.

4. A dedicated junction box for monitoring photovoltaic modules according to claim 1, characterized in that: A guide rod (15) is fixedly connected to the upper end of the base (4). The guide rod (15) passes through the linkage plate (12) and is slidably connected to the linkage plate (12).

5. A dedicated junction box for monitoring photovoltaic modules according to claim 1, characterized in that: The wire fixing mechanism (3) includes a wire threading nozzle (31) fixedly connected to the box body (1), and the wire threading nozzle (31) is disposed through the box body (1). A threaded sleeve (32) is threadedly connected to the outside of the wire threading nozzle (31). A rubber plug (33) is slidably connected to the inside of the threaded sleeve (32). The rubber plug (33) is slidably connected to the inside of the wire threading nozzle (31). A locking disc (34) is fixedly connected to the outside of the threaded sleeve (32). A locking block (35) is fixedly connected to the outside of the box body (1). A locking pin (36) is slidably connected inside the locking block (35). The locking pin (36) is inserted into the locking disc (34).

6. A dedicated junction box for monitoring photovoltaic modules according to claim 5, characterized in that: The lock block (35) is provided with a second spring (37) inside. One end of the second spring (37) is fixedly connected to the lock stop pin (36), and the other end of the second spring (37) is fixedly connected to the inner surface of the lock block (35).

7. A dedicated junction box for monitoring photovoltaic modules according to claim 5, characterized in that: A lever (38) is fixedly connected to the pin body of the locking pin (36), and the lever (38) passes through the locking block (35) and is slidably connected to the locking block (35).

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