Rapid installing and fixing system of intelligent photovoltaic junction box

Abstract

The utility model relates to the technical field of photovoltaic junction boxes, in particular to a quick mounting and fixing system of an intelligent photovoltaic junction box, which comprises a fixing seat, the top end of the fixing seat is provided with the photovoltaic junction box, two sides of the photovoltaic junction box are connected with photovoltaic cables through threads, the top end of the fixing seat is slidably connected with a clamping mechanism, and the clamping mechanism is connected with the photovoltaic cables through threads. The periphery of the outer wall of the photovoltaic junction box is rotationally connected with a fixing mechanism, and the fixing mechanism penetrates through the photovoltaic junction box to the outer wall of the photovoltaic cable. According to the utility model, through mutual cooperation of internal parts of the fixing mechanism, the photovoltaic junction box is clamped in the fixing seat through the internal parts of the fixing mechanism, a photovoltaic cable and the photovoltaic junction box are clamped, through mutual cooperation of internal parts of the clamping mechanism, the fixing column is extruded to move out from the interior of the fixing seat, and the photovoltaic junction box is fixed. And the clamping fixation between the photovoltaic junction box and the fixed seat is relieved, and the fixed column does not need to be pried, so that the damage to the fixed column and internal parts of the clamping mechanism is reduced.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic junction box technology, specifically to a rapid installation and fixing system for an intelligent photovoltaic junction box. Background Technology

[0002] Photovoltaic (PV) power generation systems directly convert solar energy into electrical energy. While providing clean power generation, they also consider economic development and ecological protection. Currently, they are widely used in various scenarios and are one of the important clean energy sources to replace traditional fossil fuels, with broad development prospects. Photovoltaic modules are the basic power generation units in a photovoltaic system. To assemble photovoltaic modules into a complete power generation system, electrical boxes (also called junction boxes) are needed to install them together. For example, when several photovoltaic modules are connected in series to form a photovoltaic module string with a DC high voltage of over 1000V, the uncontrollable DC high voltage becomes a safety hazard for the photovoltaic power generation system. Especially in fire, maintenance, or other emergency situations, it can seriously hinder accident handling and even threaten the personal safety of rescue personnel. To eliminate the aforementioned safety hazards of photovoltaic power generation systems, it is necessary to connect photovoltaic module shutdown junction boxes that can be quickly shut off to the modules.

[0003] A search revealed a utility model patent with publication number CN220139513U, which discloses a rapid installation and fixing system for intelligent photovoltaic junction boxes. This system includes a fixing base and an intelligent photovoltaic junction box. The fixing base has a hook structure on its side, and the intelligent photovoltaic junction box has a locking structure on its side that engages with the hook. By designing a fixing base independent of the intelligent photovoltaic junction box, rapid installation and replacement of the intelligent junction box are achieved. This utility model's technical solution allows for pre-installation of components before shipment, achieving differentiation and aesthetic appeal between components. The base can be pre-attached to the back panel. When the intelligent junction box is installed, it becomes an intelligent component; when not installed, it remains a traditional component, facilitating the intelligent transformation of traditional components. Compared to designs that directly glue the intelligent junction box to the component, the fixing base design allows for rapid replacement and maintenance in case of intelligent junction box failure, saving on operation and maintenance costs.

[0004] While the aforementioned patents utilize a fixed-base design for quick replacement and maintenance in case of smart junction box failure, saving on operating costs, the connection between the fixed base and the junction box is achieved through a skirt structure or interlocking holes on the side of the box. Although this connection method allows for quick installation, disassembly and replacement are difficult because the skirt structure or interlocking holes are located at the contact point between the fixed base and the junction box, making it hard to pry them apart. This results in extremely inconvenient disassembly and separation of the fixed base and junction box, and can easily damage the skirt structure or interlocking holes, affecting the subsequent use of the fixed base.

[0005] Therefore, it is necessary to propose a rapid installation and fixing system for intelligent photovoltaic junction boxes to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a quick installation and fixing system for intelligent photovoltaic junction boxes. Through the cooperation of internal parts of the snap-fit ​​mechanism, the fixing post is easily squeezed out of the fixing base, releasing the snap-fit ​​between the photovoltaic junction box and the fixing base without prying the fixing post, thus reducing damage to the fixing post and the internal parts of the snap-fit ​​mechanism. This solves the problem in the prior art where, when disassembling and replacing the fixing base and junction box, the skirt structure or the interlocking holes are located at the contact point between the fixing base and the junction box, making it difficult to pry them apart and complete the disassembly of the fixing base and junction box. This results in extreme inconvenience in disassembling and separating the fixing base and junction box, and easily damages the skirt structure or the interlocking holes, affecting the subsequent use of the fixing base.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a quick installation and fixing system for an intelligent photovoltaic junction box, including a fixing base, a photovoltaic junction box installed on the top of the fixing base, photovoltaic cables connected to both sides of the photovoltaic junction box by threads, a snap-fit ​​mechanism slidably connected to the top of the fixing base and penetrating into the interior of the fixing base, and a fixing mechanism rotatably connected to the outer wall of the photovoltaic junction box and penetrating into the outer wall of the photovoltaic cable;

[0008] The snap-fit ​​mechanism includes multiple arc-shaped springs, which are mechanically fixed around the inner wall of the fixing base and fit against the outer wall of the photovoltaic junction box. A support rod is mechanically fixed to the back of each arc-shaped spring and slidably connected to the inside of the fixing base. Conical blocks are slidably connected to the top ends of both ends of the fixing base. Telescopic plates are mechanically fixed to both sides of the conical blocks and slidably connected to the inside of the fixing base. A telescopic spring is mechanically fixed between the bottom end of the telescopic plate and the inside of the fixing base.

[0009] The fixing mechanism includes multiple swing arms, which are rotatably connected to the outer wall of the photovoltaic junction box and located at one end of the arc-shaped spring. The top of the swing arm and the inside of the fixing seat are rotatably connected to a support shaft. A torsion spring is sleeved on the outer wall of the support shaft. A fixing post is connected to the bottom end of the swing arm near the arc-shaped spring, and a clamping post is connected to the bottom end of the swing arm near the photovoltaic cable, and the clamping post is in contact with the outer wall of the photovoltaic cable.

[0010] Preferably, the snap-fit ​​mechanism further includes a support column, which is slidably connected to the inside of the fixed base and located on one side of the conical block. A support spring is mechanically fixed between the support column and the inside of the fixed base. A connecting column is mechanically fixed to one side of the bottom end of the support column and slidably connected to one side of the support rod.

[0011] Preferably, the top of the fixed base is provided with a V-shaped groove that matches the conical block, and the interior of the fixed base is provided with a sliding groove that matches the conical block and the telescopic plate.

[0012] Preferably, the fixed base has a sliding groove inside that matches the support column, the surface of the arc-shaped spring is an arc-shaped surface and the arc-shaped spring itself has good elasticity, and the contact surface between the support rod and the connecting column is set as a conical surface.

[0013] Preferably, the inner wall of the fixing base is provided with multiple slots that match the fixing post, and the outer wall of the fixing post and the contact surface with the arc-shaped spring are arc surfaces. The two sides of the photovoltaic junction box are provided with multiple threaded holes that match the photovoltaic cable.

[0014] Preferably, the outer wall of the photovoltaic junction box is provided with a movable groove that matches the swing arm, the two sides of the torsion spring are mechanically connected to the support shaft and the photovoltaic junction box respectively, and the surface of the clamping column near the photovoltaic cable is provided with friction protrusions.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] By pressing the conical block, the conical block is forced to push the telescopic plate to compress the telescopic spring and move, causing the conical block to slide on the V-shaped groove on the fixed seat. This causes the protective shells on the fixed seat to move closer together and compress the support column. The support column is then forced to compress the support spring and move. The movement of the support column causes the connecting column to move and move closer to the support rod. The conical surface pushes the support rod to move, which in turn pushes the arc-shaped spring to move and reset. The reset arc-shaped spring pushes the fixed column out of the slot on the inner wall of the fixed seat, releasing the connection between the fixed seat and the photovoltaic junction box. This allows for the disassembly and replacement of the fixed seat and the photovoltaic junction box, avoiding damage to the interlocking holes or skirt structure between the fixed seat and the photovoltaic junction box caused by prying.

[0017] After the photovoltaic junction box is removed from the fixed base, the torsion spring resets and pushes the support shaft to rotate. The rotation of the support shaft causes the swing arm to swing, which in turn causes one of the fixed posts to be completely removed from the photovoltaic junction box. This also causes the clamping post on the other side to be completely separated from the outer wall of the photovoltaic cable, releasing the clamping limit on the photovoltaic cable inside the photovoltaic junction box. This allows the operator to easily remove the photovoltaic cable from the photovoltaic junction box via the threads. When the photovoltaic junction box is installed on the fixed base, after the fixed post is engaged in the slot, the torsion spring is twisted and rotated under force, causing the support shaft to drive the swing arm to rotate. The rotation of the swing arm causes the clamping post to move and engage with the threads on the outer wall of the photovoltaic cable for clamping. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

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

[0020] Figure 2 This is an exploded view of the mounting base and photovoltaic junction box of this utility model;

[0021] Figure 3 This is a cross-sectional structural diagram of the fixing base of this utility model;

[0022] Figure 4 This is a cross-sectional structural diagram of the photovoltaic junction box of this utility model;

[0023] Figure 5 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0024] Figure 6 For the present utility model Figure 4 Enlarged structural diagram at point B.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Fixing base; 2. Photovoltaic junction box; 201. Photovoltaic cable; 3. Snap-fit ​​mechanism; 301. Conical block; 302. Telescopic plate; 303. Telescopic spring; 304. Support column; 305. Support spring; 306. Connecting column; 307. Arc-shaped spring; 308. Support rod; 4. Fixing mechanism; 401. Swing arm; 402. Support shaft; 403. Torsion spring; 404. Fixing column; 405. Clamping column. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] This utility model provides, for example Figure 1-6 The system shown is a quick installation and fixing system for a smart photovoltaic junction box, including a fixing base 1, a photovoltaic junction box 2 installed on the top of the fixing base 1, photovoltaic cables 201 connected to both sides of the photovoltaic junction box 2 by threads, a snap-fit ​​mechanism 3 slidably connected to the top of the fixing base 1 and extending into the interior of the fixing base 1, and a fixing mechanism 4 rotatably connected around the outer wall of the photovoltaic junction box 2 and extending through the photovoltaic junction box 2 to the outer wall of the photovoltaic cables 201.

[0029] The snap-fit ​​mechanism 3 includes an arc-shaped spring 307. There are multiple arc-shaped springs 307. The multiple arc-shaped springs 307 are mechanically fixed around the inner wall of the fixing base 1 and fit against the outer wall of the photovoltaic junction box 2. The back of the arc-shaped spring 307 is mechanically fixed with a support rod 308 and slidably connected to the inside of the fixing base 1. The top ends of both ends of the fixing base 1 are slidably connected with a conical block 301. The two sides of the conical block 301 are mechanically fixed with telescopic plates 302 and slidably connected to the inside of the fixing base 1. The bottom end of the telescopic plate 302 is mechanically fixed with a telescopic spring 303 between it and the inside of the fixing base 1.

[0030] The fixing mechanism 4 includes a swing arm 401. There are multiple swing arms 401, which are rotatably connected to the outer wall of the photovoltaic junction box 2 and located at one end of the arc-shaped spring 307. The top of the swing arm 401 and the inside of the fixing base 1 are rotatably connected to a support shaft 402. A torsion spring 403 is sleeved on the outer wall of the support shaft 402. A fixing post 404 is connected to the bottom end of the swing arm 401 near the arc-shaped spring 307. A clamping post 405 is connected to the bottom end of the swing arm 401 near the photovoltaic cable 201 and is in contact with the outer wall of the photovoltaic cable 201.

[0031] Through the cooperation between the internal parts of the fixing mechanism 4, the photovoltaic junction box 2 is easily snapped into the fixing base 1, and the photovoltaic cable 201 is clamped between the photovoltaic junction box 2 and the photovoltaic junction box 2. Through the cooperation between the internal parts of the snapping mechanism 3, the fixing post 404 is easily squeezed out from the fixing base 1, releasing the snapping fixation between the photovoltaic junction box 2 and the fixing base 1, without having to pry the fixing post 404, thus reducing damage to the fixing post 404 and the internal parts of the snapping mechanism 3.

[0032] Refer to the instruction manual appendix Figure 1-6The snap-fit ​​mechanism 3 also includes a support column 304, which is slidably connected to the inside of the fixed base 1 and located on one side of the conical block 301. A support spring 305 is mechanically fixed between the support column 304 and the inside of the fixed base 1. A connecting column 306 is mechanically fixed to one side of the bottom end of the support column 304 and slidably connected to one side of the support rod 308. Through the mutual cooperation between the internal parts of the snap-fit ​​mechanism 3, the support column 304 can easily press the support rod 308 through the connecting column 306.

[0033] Refer to the instruction manual appendix Figure 1-6 The top of the fixed base 1 is provided with a V-shaped groove that matches the conical block 301. The interior of the fixed base 1 is provided with a sliding groove that matches the conical block 301 and the telescopic plate 302. The top two ends of the fixed base 1 include protective shells, and the protective shells are made of thermoplastic polyurethane and have a certain elasticity. There are gaps between the multiple protective shells to allow them to be squeezed against the support column 304. The V-shaped groove that matches the conical block 301 is provided at the top of the fixed base 1, and the sliding groove that matches the conical block 301 and the telescopic plate 302 is provided inside the fixed base 1, which facilitates the conical block 301 to slide and extend within the V-shaped groove.

[0034] Refer to the instruction manual appendix Figure 1-6 The fixed base 1 has a sliding groove inside that matches the support column 304. The surface of the arc-shaped spring 307 is arc-shaped and has good elasticity. The contact surface between the support rod 308 and the connecting column 306 is set as a conical surface. The arc-shaped spring 307 has an arc-shaped surface and has good elasticity, which makes it easy for the support rod 308 to move and push the arc-shaped spring 307 to move and deform.

[0035] Refer to the instruction manual appendix Figure 1-6 The inner wall of the fixing base 1 is provided with multiple slots that match the fixing post 404, and the outer wall of the fixing post 404 has a rounded surface in contact with the arc-shaped spring piece 307. The photovoltaic junction box 2 has multiple threaded holes on both sides that match the photovoltaic cable 201. The fixing base 1 has multiple slots that match the fixing post 404, and the outer wall of the fixing post 404 has a rounded surface in contact with the arc-shaped spring piece 307, so that the fixing post 404 can pass through the slots in the inner wall of the fixing base 1 and contact and press with the arc-shaped spring piece 307.

[0036] Refer to the instruction manual appendix Figure 1-6The outer wall of the photovoltaic junction box 2 is provided with a movable groove that matches the swing arm 401. The two sides of the torsion spring 403 are mechanically connected to the support shaft 402 and the photovoltaic junction box 2, respectively. The surface of the clamping column 405 near the photovoltaic cable 201 is provided with friction protrusions. The movable groove that matches the swing arm 401 on the outer wall of the photovoltaic junction box 2 facilitates the swing arm 401 to swing slightly on the inner wall of the photovoltaic junction box 2, so that the clamping column 405 and the fixed column 404 contact the photovoltaic cable 201 and the arc-shaped spring 307, respectively.

[0037] The working principle of this practical application is as follows:

[0038] Refer to the instruction manual appendix Figure 1-6 By pressing the conical block 301, the conical block 301 is forced to push the telescopic plate 302 to compress the telescopic spring 303 and move, causing the conical block 301 to slide on the V-shaped groove on the fixed seat 1. This causes the protective shells on the fixed seat 1 to move closer together and compress the support column 304. The support column 304 is then forced to compress the support spring 305 and move. The movement of the support column 304 causes the connecting column 306 to move and move closer to the support rod 308. The conical surface pushes the support rod 308 to move, which in turn pushes the arc-shaped spring 307 to move and reset. The arc-shaped spring 307 then pushes the fixed column 404 out of the slot on the inner wall of the fixed seat 1, releasing the connection between the fixed seat 1 and the photovoltaic junction box 2. This allows for the disassembly and replacement of the fixed seat 1 and the photovoltaic junction box 2, thus avoiding damage to the concave and convex slots or skirt structure between the fixed seat 1 and the photovoltaic junction box 2 caused by prying.

[0039] Refer to the instruction manual appendix Figure 1-6 After the photovoltaic junction box 2 is removed from the fixed base 1, the torsion spring 403 resets and pushes the support shaft 402 to rotate. The rotation of the support shaft 402 drives the swing arm 401 to swing. The swing arm 401 causes the fixed post 404 at one end to be completely removed from the photovoltaic junction box 2, and causes the clamping post 405 on the other side to be completely separated from the outer wall of the photovoltaic cable 201. This releases the clamping limit on the photovoltaic cable 201 in the photovoltaic junction box 2, making it easy for the staff to remove the photovoltaic cable 201 from the photovoltaic junction box 2 through the thread. When the photovoltaic junction box 2 is installed on the fixed base 1, after the fixed post 404 is engaged in the slot, the torsion spring 403 is twisted and rotated under force, causing the support shaft 402 to drive the swing arm 401 to rotate. The rotation of the swing arm 401 causes the clamping post 405 to move and engage with the threaded outer wall of the photovoltaic cable 201 for clamping.

[0040] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A rapid installation and fixing system for an intelligent photovoltaic junction box, characterized in that: The device includes a fixed base (1), a photovoltaic junction box (2) is installed on the top of the fixed base (1), and photovoltaic cables (201) are connected to both sides of the photovoltaic junction box (2) by threads. A snap-fit ​​mechanism (3) is slidably connected to the top of the fixed base (1) and extends into the interior of the fixed base (1). A fixing mechanism (4) is rotatably connected around the outer wall of the photovoltaic junction box (2) and extends through the photovoltaic junction box (2) to the outer wall of the photovoltaic cable (201). The snap-fit ​​mechanism (3) includes an arc-shaped spring (307), and there are multiple arc-shaped springs (307). The multiple arc-shaped springs (307) are mechanically fixed around the inner wall of the fixed base (1) and fit against the outer wall of the photovoltaic junction box (2). The back of the arc-shaped spring (307) is mechanically fixed with a support rod (308) and slidably connected to the inside of the fixed base (1). The top ends of both ends of the fixed base (1) are slidably connected with a conical block (301). The two sides of the conical block (301) are mechanically fixed with telescopic plates (302) and slidably connected to the inside of the fixed base (1). The bottom end of the telescopic plate (302) is mechanically fixed with a telescopic spring (303) between it and the inside of the fixed base (1). The fixing mechanism (4) includes a swing arm (401), and there are multiple swing arms (401). The multiple swing arms (401) are rotatably connected to the outer wall of the photovoltaic junction box (2) and located at one end of the arc-shaped spring (307). The top of the swing arm (401) and the inside of the fixing seat (1) are rotatably connected to a support shaft (402). A torsion spring (403) is sleeved on the outer wall of the support shaft (402). A fixing post (404) is connected to the bottom end of the swing arm (401) near the arc-shaped spring (307). A clamping post (405) is connected to the bottom end of the swing arm (401) near the photovoltaic cable (201) and is in contact with the outer wall of the photovoltaic cable (201).

2. The rapid installation and fixing system for an intelligent photovoltaic junction box according to claim 1, characterized in that: The snap-fit ​​mechanism (3) also includes a support column (304), which is slidably connected to the inside of the fixed seat (1) and located on one side of the conical block (301). A support spring (305) is mechanically fixed between the support column (304) and the inside of the fixed seat (1). A connecting column (306) is mechanically fixed to one side of the bottom end of the support column (304) and slidably connected to one side of the support rod (308).

3. The rapid installation and fixing system for an intelligent photovoltaic junction box according to claim 1, characterized in that: The top of the fixed seat (1) is provided with a V-shaped groove that matches the conical block (301), and the interior of the fixed seat (1) is provided with a sliding groove that matches the conical block (301) and the telescopic plate (302).

4. The rapid installation and fixing system for an intelligent photovoltaic junction box according to claim 2, characterized in that: The fixed base (1) has a sliding groove inside that matches the support column (304). The surface of the arc-shaped spring (307) is an arc-shaped surface, and the arc-shaped spring (307) itself has good elasticity. The contact surface between the support rod (308) and the connecting column (306) is set as a conical surface.

5. The rapid installation and fixing system for an intelligent photovoltaic junction box according to claim 1, characterized in that: The inner wall of the fixing base (1) is provided with multiple slots that match the fixing post (404), and the outer wall of the fixing post (404) and the contact surface with the arc-shaped spring piece (307) are arc surfaces. The photovoltaic junction box (2) is provided with multiple threaded holes that match the photovoltaic cable (201) on both sides.

6. The rapid installation and fixing system for an intelligent photovoltaic junction box according to claim 1, characterized in that: The outer wall of the photovoltaic junction box (2) is provided with an active groove that matches the swing arm (401). The two sides of the torsion spring (403) are mechanically connected to the support shaft (402) and the photovoltaic junction box (2) respectively. The surface of the clamping column (405) near the photovoltaic cable (201) is provided with friction protrusions.

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