Photovoltaic connector with more stable contact

Abstract

This application relates to a photovoltaic connector with more stable contact, belonging to the field of photovoltaic connector technology. It includes a male plug and a female plug, with a connection module between them. The tool-free wiring mechanism of this application utilizes a fixed ring, turntable, worm gear, worm, knob, cover plate, sleeve block, and sleeve rod for transmission cooperation. This allows the sleeve rod to drive the male and female copper-plated tin-plated inner cores to clamp the cable without the need for wire clamping pliers, solving the problem of not being able to replace cables on-site due to lack of tools. Simultaneously, the L-shaped connecting plate, limiting hole, connecting block, locking rod, fixing plate, and telescopic spring of the connection module achieve precise docking and automatic locking of the male and female plugs. A lever further reduces disassembly difficulty, and a deformation groove forms a three-lobed structure for the male and female copper-plated tin-plated inner cores, increasing the contact area with the cable and adapting to different wire diameters. The clamping claw assembly and the loosening tightening nut provide secondary reinforcement of the cable, preventing it from falling off and allowing for reuse.

Description

Technical Field

[0001] This application relates to the field of photovoltaic connector technology, and in particular to a photovoltaic connector with more stable contact. Background Technology

[0002] In existing photovoltaic products, photovoltaic connectors serve as key connection components between photovoltaic modules and equipment such as inverters and combiner boxes, and their usage continues to increase with the development of the photovoltaic industry. Existing photovoltaic connectors typically include male and female plugs, which transmit signals and electrical energy through mating. The connection between cables and male / female plugs generally adopts a riveting process, requiring the use of special crimping pliers to forcibly rivet the connector pin sleeves to the cable for fixation.

[0003] The existing connection method is crimping, which uses crimping pliers to rivet the connector pin sleeve to the cable. If there are no special tools available for the project, it is impossible to replace them. Therefore, there is an urgent need for a solution that allows for quick connection of photovoltaic cables and connector male and female heads (without the aid of tools), making it easier to replace connectors on the project. Utility Model Content

[0004] The purpose of this application is to provide a photovoltaic connector with more stable contact, which can achieve a more stable connection function without the aid of other tools, thus solving the problems mentioned in the background art.

[0005] This application provides a photovoltaic connector with more stable contact, which adopts the following technical solution: A photovoltaic connector with more stable contact includes a male plug and a female plug, and a connection module is provided between the male plug and the female plug. A male copper-plated tin core is installed on the inner wall of the male plug, and a female copper-plated tin core is installed on the inner wall of the female plug. Three deformation grooves are opened at the ends of the male copper-plated tin core and the female copper-plated tin core that are far apart from each other. Tool-free wiring mechanism is provided at the ends of the male copper-plated tin core and the female copper-plated tin core that are far apart from each other.

[0006] The tool-free wiring mechanism includes a fixed ring fixedly connected to the inner wall of the male and female plugs. A rotatable turntable is installed on the inner wall of the fixed ring. A worm gear is fixedly connected to the outer surface of the turntable. A worm gear meshing with the worm gear is installed on the outer surface of the fixed ring. A cover plate is fixedly connected to one side of the turntable. Three rotatable sleeve blocks are installed between the cover plate and the turntable. Three rotatable sleeve rods are installed on one side of the fixed ring. The three sleeve rods are slidably sleeved on the inner wall of the three sleeve blocks. One end of each sleeve rod is fixedly connected to the opposite ends of the male and female copper-plated tin-plated cores.

[0007] By adopting the above technical solution, and with the cooperation of the fixing ring, turntable, worm gear, worm, cover plate, sleeve block and sleeve rod of the tool-free wiring mechanism, there is no need to rely on special tools such as wire clamps. The transmission structure alone can drive the sleeve rod to push the male and female copper-plated inner cores to clamp the cable, effectively solving the problem that existing photovoltaic connectors require special tools for wiring and are inconvenient for on-site replacement. At the same time, the transmission-driven clamping method can ensure that the male and female copper-plated inner cores and the cable have uniform contact force, avoiding poor contact caused by improper operation during the riveting process, and significantly improving the contact stability between the cable and the inner core.

[0008] Preferably, the connection module includes two L-shaped connection plates fixedly connected to the outer surface of the female connector, and each of the two L-shaped connection plates has a limiting hole at one end.

[0009] By adopting the above technical solution, the L-shaped connecting plate and limiting holes of the connecting module can achieve precise docking guidance between the female plug and the male plug, avoiding misalignment during the insertion of the male plug and the female plug, thus laying the foundation for subsequent stable locking. At the same time, the limiting holes can provide positioning points for the locking structure, preventing poor contact between the male and female copper tin-plated cores due to positional deviation after insertion, thereby improving the accuracy and stability of the overall connection.

[0010] Preferably, the outer surface of the male plug is fixedly connected to two connecting blocks, and the two L-shaped connecting plates are respectively inserted into the inner walls of the two connecting blocks.

[0011] By adopting the above technical solution, the L-shaped connecting plate of the connecting module is inserted into the connecting block of the male plug, forming a preliminary assembly structure of the male plug and the female plug. The preliminary docking can be completed without the need for additional tools, making the operation convenient. At the same time, the plug-in structure can limit the radial wobbling of the male plug and the female plug, and prevent the two from shifting due to vibration and other factors after they are plugged in, further ensuring stable contact between the male copper tin-plated inner core and the female copper tin-plated inner core.

[0012] Preferably, a locking rod is slidably sleeved on the inner wall of each of the connecting blocks, a fixing plate is fixedly connected to the ends of the two locking rods that are far apart from each other, a telescopic spring is fixedly connected to the ends of the two fixing plates that are close to each other, and the ends of the two telescopic springs that are close to each other are respectively fixedly connected to the outer surfaces of the two connecting blocks.

[0013] By adopting the above technical solution, relying on the elastic cooperation of the locking rod, fixing plate and telescopic spring in the connecting block, the telescopic spring can push the locking rod into the limiting hole of the L-shaped connecting plate, realizing the quick locking of the male plug and female plug without the need for tools; when disassembling, only the fixing plate needs to be pulled to unlock, solving the problems of existing connector locking and disassembly relying on tools and low on-site maintenance efficiency; at the same time, the continuous elastic force of the telescopic spring can ensure the stable cooperation between the locking rod and the limiting hole, prevent accidental disengagement and improve the reliability of the connection.

[0014] Preferably, the size of the locking rod is adapted to the size of the limiting hole, and a lever is fixedly connected to the outer surface of each fixing piece.

[0015] By adopting the above technical solution, the size matching of the locking rod and the limiting hole ensures that the two fit tightly, avoiding loose gaps after locking, and further preventing relative shaking between the male and female plug components; while the lever on the fixing plate provides operators with a convenient point of force application, allowing them to easily pull the fixing plate to separate the locking rod from the limiting hole without the aid of tools, completely solving the problem of existing connectors being difficult to disassemble and replace without tools, and significantly improving the convenience of on-site maintenance.

[0016] Preferably, the worm gear's shaft end is rotatably connected to the inner walls of the male and female plug fittings, respectively, and a knob is fixedly connected to the worm gear's shaft end.

[0017] By adopting the above technical solution, the knob at the end of the worm shaft provides the operator with an intuitive manual operation component, allowing the worm to be rotated without special tools. This, in turn, drives the sleeve block and sleeve rod to move through the worm wheel and turntable, thus realizing a tool-free drive and tool-free wiring mechanism.

[0018] Preferably, the male copper-plated tin inner core and the female copper-plated tin inner core are respectively formed into a three-lobed state by forming deformation grooves at their far ends.

[0019] By adopting the above technical solution, the male and female copper tin-plated inner cores, through the deformation groove, form a three-lobed structure with better elastic deformation capability. Driven by the tool-free wiring mechanism, the three-lobed structure can evenly wrap the cable conductor from multiple directions, significantly increasing the contact area between the inner core and the cable, and avoiding excessive contact resistance caused by single-point contact. At the same time, the elastic deformation of the three-lobed structure can be adapted to photovoltaic cables of different specifications, without the need to replace the inner core for a specific wire diameter. This solves the problem of poor compatibility of the existing riveting structure and poor contact caused by wire diameter mismatch, thus improving the connector's versatility and contact stability.

[0020] Preferably, the ends of the male plug and the female plug that are far apart from each other are connected to clamping claw assemblies, and the outer surface of each clamping claw assembly is threaded with a release tightening nut.

[0021] By adopting the above technical solution, the clamping claw assembly at the ends of the male and female plugs, in conjunction with the loosening tightening nut, can provide secondary reinforcement of the cable. Based on the initial clamping of the tool-free wiring mechanism, the clamping claw assembly can be further tightened by hand-tightening the loosening tightening nut, ensuring that there is no loose gap between the cable and the inner core. This double fixing structure does not require special tools, which can prevent the cable from falling off due to vibration and pulling during long-term use, and avoid the problem that the existing riveting structure cannot be reused after disassembly, thereby improving the service life and maintenance economy of the connector, while further ensuring contact stability.

[0022] In summary, this application includes at least one of the following beneficial technical effects: This new type of photovoltaic connector offers more stable contact. Through the transmission and cooperation of the fixing ring, turntable, worm gear, worm, knob, cover plate, sleeve block, and sleeve rod in the tool-free wiring mechanism, the sleeve rod can be driven to clamp the male and female copper-plated tin-plated inner cores of the cable without the need for wire clamping pliers. This solves the problem of not being able to replace the cable on-site due to the lack of tools. At the same time, the L-shaped connecting plate, limiting hole, connecting block, locking rod, fixing plate, and telescopic spring of the connecting module enable precise docking and automatic locking of the male and female plug components. The lever further reduces the difficulty of disassembly, and the deformation groove makes the male and female copper-plated tin-plated inner cores of the cable form a three-lobed structure, increasing the contact area with the cable and adapting to different wire diameters. The clamping claw assembly and the loosening tightening nut provide secondary reinforcement of the cable to prevent it from falling off and are reusable. Overall, it greatly improves the convenience of maintenance and the stability of contact. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall front view structure of this application; Figure 2 This is a schematic diagram of the overall cross-sectional structure of this application; Figure 3 This is a schematic diagram of a partially exploded structure in this application; Figure 4 This is a partial cross-sectional view of the structure of this application; Figure 5 This is a partial bottom view of the structure of this application.

[0024] In the picture: 1. Male plug; 2. Female plug; 3. Connecting module; 301. L-shaped connecting plate; 302. Limiting hole; 303. Connecting block; 304. Locking rod; 305. Fixing plate; 306. Telescopic spring; 4. Male tin-plated copper inner core; 5. Female tin-plated copper inner core; 6. Deformation groove; 7. Tool-free wiring mechanism; 701. Fixing ring; 702. Turntable; 703. Worm gear; 704. Worm; 705. Knob; 706. Cover plate; 707. Sleeve block; 708. Sleeve rod; 8. Paddle; 9. Clamping claw assembly; 10. Loosening clamping nut. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0026] Example 1: A photovoltaic connector with more stable contact, referring to... Figure 1 , Figure 2 and Figure 5 The device includes a male plug 1 and a female plug 2, with a connecting module 3 between them. A male tin-plated copper core 4 is installed on the inner wall of the male plug 1, and a female tin-plated copper core 5 is installed on the inner wall of the female plug 2. Three deformation grooves 6 are provided at the ends of both the male and female tin-plated copper cores 4 and 5 that are furthest from each other. A tool-free wiring mechanism 7 is provided at the ends of both the male and female tin-plated copper cores 4 and 5 that are furthest from each other. The furthest ends of the male and female tin-plated copper cores 4 and 5 are respectively formed into three segments by the deformation grooves 6. The male copper-plated tin inner core 4 and the female copper-plated tin inner core 5 form a three-lobed structure through the deformation groove 6, which has better elastic deformation capability. Driven by the tool-free wiring mechanism 7, the three-lobed structure can evenly wrap the cable conductor from multiple directions, greatly increasing the contact area between the inner core and the cable, and avoiding excessive contact resistance caused by single-point contact. At the same time, the elastic deformation of the three-lobed structure can adapt to photovoltaic cables of different specifications, without the need to replace the inner core for a specific wire diameter. This solves the problem of poor compatibility of the existing riveting structure and poor contact caused by wire diameter mismatch, and improves the versatility and contact stability of the connector.

[0027] Reference Figure 2 , Figure 4 and Figure 5The tool-free wiring mechanism 7 includes a retaining ring 701 fixedly connected to the inner walls of the male plug 1 and the female plug 2. A rotatable turntable 702 is mounted on the inner wall of the retaining ring 701. A worm gear 703 is fixedly connected to the outer surface of the turntable 702. A worm 704 meshing with the worm gear 703 is mounted on the outer surface of the retaining ring 701. A cover plate 706 is fixedly connected to one side of the turntable 702. Three rotatable sleeve blocks 707 are installed between the cover plate 706 and the turntable 702. Three rotatable sleeve rods 708 are mounted on one side of the retaining ring 701. The three sleeve rods 708 are slidably sleeved on three... The inner wall of the sleeve block 707 has one end of each of the multiple sleeve rods 708 fixedly connected to the opposite ends of the male tin-plated copper core 4 and the female tin-plated copper core 5. The rotating shaft end of the worm gear 704 is rotatably connected to the inner walls of the male plug 1 and the female plug 2. A knob 705 is fixedly connected to the rotating shaft end of the worm gear 704. The knob 705 at the rotating shaft end of the worm gear 704 provides the operator with an intuitive manual operation component. The worm gear 704 can be rotated without special tools, which in turn drives the sleeve block 707 and the sleeve rods 708 to move through the worm wheel 703 and the turntable 702, realizing the tool-free drive of the tool-free wiring mechanism 7.

[0028] Example 2: A photovoltaic connector with more stable contact, referring to... Figure 1 , Figure 2 and Figure 3 Based on the same concept as Embodiment 1 above, this embodiment proposes a connection module 3 including two L-shaped connection plates 301 fixedly connected to the outer surface of the female plug 2. Each of the two L-shaped connection plates 301 has a limiting hole 302 at one end. Using the L-shaped connection plates 301 and the limiting holes 302 of the connection module 3, precise docking guidance between the female plug 2 and the male plug 1 can be achieved, preventing misalignment during insertion and laying the foundation for subsequent stable locking. Simultaneously, the limiting holes 302 provide positioning points for the locking structure, preventing poor contact between the male copper-plated tin inner core 4 and the female copper-plated tin inner core 5 due to positional deviation after insertion, thus improving... To ensure the precision and stability of the overall connection, two connecting blocks 303 are fixedly connected to the outer surface of the male plug 1. Two L-shaped connecting plates 301 are respectively inserted into the inner walls of the two connecting blocks 303. The L-shaped connecting plates 301 of the connecting module 3 are inserted into the connecting blocks 303 of the male plug 1 to form the preliminary assembly structure of the male plug 1 and the female plug 2. The preliminary docking can be completed without the need for additional tools, making the operation convenient. At the same time, the plug-in structure can limit the radial shaking of the male plug 1 and the female plug 2, and prevent the two from shifting due to vibration and other factors after they are plugged in, further ensuring the stable contact between the male copper tin-plated inner core 4 and the female copper tin-plated inner core 5.

[0029] Reference Figure 1 , Figure 2 and Figure 3Each connecting block 303 has a locking rod 304 slidably fitted on its inner wall. A fixing plate 305 is fixedly connected to the ends of the two locking rods 304 that are far apart from each other. A telescopic spring 306 is fixedly connected to the ends of the two fixing plates 305 that are close to each other. The ends of the two telescopic springs 306 that are close to each other are respectively fixedly connected to the outer surfaces of the two connecting blocks 303. Relying on the elastic cooperation between the locking rods 304, fixing plates 305, and telescopic springs 306 within the connecting block 303, the telescopic springs 306 can push the locking rods 304 into the limiting holes 302 of the L-shaped connecting plate 301, thus realizing the male connector. The quick-locking mechanism between the 1st and 2nd female connectors can be completed without tools. Disassembly only requires pulling the fixing plate 305 to unlock, solving the problems of existing connectors relying on tools for locking and disassembly, and low on-site maintenance efficiency. Simultaneously, the continuous elasticity of the telescopic spring 306 ensures a stable fit between the locking rod 304 and the limiting hole 302, preventing accidental disengagement and improving connection reliability. The dimensions of the locking rod 304 and the limiting hole 302 are matched. Each fixing plate 305 has a fixedly connected paddle 8 on its outer surface. The dimensional matching between the locking rod 304 and the limiting hole 302 ensures the stability of the connection. The fit is tight, preventing any loosening or gaps after locking, and further preventing relative wobbling between the male plug 1 and the female plug 2. The lever 8 on the fixing plate 305 provides a convenient point of application for the operator, allowing easy pulling of the fixing plate 305 without tools to separate the locking rod 304 from the limiting hole 302. This completely solves the problem of difficulty in disassembling and replacing existing connectors without tools, significantly improving the convenience of on-site maintenance. Both the male plug 1 and the female plug 2 have clamping claw assemblies 9 connected to their opposite ends, and each clamping claw assembly 9 has a release and tightening nut threaded onto its outer surface. 10. The clamping claw assembly 9 at the ends of the male plug 1 and the female plug 2 cooperates with the loosening tightening nut 10 to provide secondary reinforcement of the cable. Based on the initial clamping of the tool-free wiring mechanism 7, the claw assembly 9 can be further clamped by hand-tightening the loosening tightening nut 10 to ensure that there is no loose gap between the cable and the inner core. This double fixing structure does not require special tools, which can prevent the cable from falling off due to vibration and pulling during long-term use, and can also avoid the problem that the existing riveting structure cannot be reused after disassembly, thereby improving the service life and maintenance economy of the connector, while further ensuring contact stability.

[0030] The implementation principle of this application embodiment is as follows: Align the connecting block 303 on the outer surface of the male plug 1 with the L-shaped connecting plate 301 on the outer surface of the female plug 2, and push the male plug 1 so that the L-shaped connecting plate 301 is inserted into the inner wall of the connecting block 303. During this process, the telescopic spring 306 in the connecting block 303 pushes the locking rod 304 to move towards the L-shaped connecting plate 301 due to its own elastic potential energy. When the limiting hole 302 on the L-shaped connecting plate 301 is aligned with the locking rod 304, the locking rod 304 can be inserted into the limiting hole 302, completing the precise docking and locking of the male plug 1 and the female plug 2. At this time, the male copper tin-plated inner core 4 and the female copper tin-plated inner core 5 achieve initial conductive contact. Next, connect the cable: Pass one end of the photovoltaic cable through the clamping claw assembly 9 at the end of the male plug 1 or female plug 2, and insert it into the inner cavity of the male copper tin-plated inner core 4 or female copper tin-plated inner core 5. Then, rotate the knob 705 at the shaft end of the worm gear 704. The knob 705 drives the worm gear 704 to rotate, and the worm wheel 703 meshing with the worm gear 704 rotates synchronously. The worm wheel 703 is fixed to the outer surface of the turntable 702, so the turntable 702 rotates on the inner wall of the fixing ring 701. When the sleeve block 707 between the turntable 702 and the cover plate 706 rotates with the turntable 702, the sleeve block 707 and the sleeve rod 706 rotate together. 8. With sliding engagement, the sleeve 708 is pushed towards the male copper-plated tin inner core 4 or the female copper-plated tin inner core 5. Since the male copper-plated tin inner core 4 and the female copper-plated tin inner core 5 form a three-lobed state through the deformation groove 6, they have elastic deformation capability. Under the pushing action of the sleeve 708, the three-lobed structure contracts inward and evenly wraps the cable conductor, realizing the initial clamping of the cable and the inner core. Finally, the loosening nut 10 on the outer surface of the clamping claw assembly 9 is tightened by hand. The loosening nut 10 squeezes the clamping claw assembly 9 through the thread transmission, causing it to further contract and adhere tightly to the outer wall of the cable, completing the secondary reinforcement of the cable. If disassembly and replacement are required, first loosen the loosening nut 10 in the reverse direction to release the clamping claw assembly 9. Then pull the lever 8 on the outer surface of the fixing plate 305. The fixing plate 305 will drive the locking rod 304 and the telescopic spring 306 to disengage from the limiting hole 302, thus separating the male plug 1 and the female plug 2. Then, rotate the knob 705 in the reverse direction. The worm gear 704 and worm wheel 703 will drive the turntable 702 to rotate in the reverse direction. The sleeve block 707 will pull the sleeve rod 708 back, and the three-lobed structure of the male copper tin-plated inner core 4 and the female copper tin-plated inner core 5 will return to its original state. The cable can then be pulled out from the inner core, completing the disassembly and replacement operation.

Claims

1. A photovoltaic connector with more stable contact, comprising a male plug (1) and a female plug (2), characterized in that: A connection module (3) is provided between the male plug (1) and the female plug (2). A male copper tin-plated inner core (4) is installed on the inner wall of the male plug (1), and a female copper tin-plated inner core (5) is installed on the inner wall of the female plug (2). Three deformation grooves (6) are provided at the ends of the male copper tin-plated inner core (4) and the female copper tin-plated inner core (5) that are far apart from each other. A tool-free wiring mechanism (7) is provided at the ends of the male copper tin-plated inner core (4) and the female copper tin-plated inner core (5) that are far apart from each other. The tool-free wiring mechanism (7) includes a fixing ring (701) fixedly connected to the inner walls of the male plug (1) and the female plug (2). A rotatable turntable (702) is mounted on the inner wall of the fixing ring (701). A worm gear (703) is fixedly connected to the outer surface of the turntable (702). A worm (704) meshing with the worm gear (703) is mounted on the outer surface of the fixing ring (701). One side of the turntable (702) is fixedly connected to... The cover plate (706) has three rotatable sleeve blocks (707) installed between it and the turntable (702). Three rotatable sleeve rods (708) are installed on one side of the fixing ring (701). The three sleeve rods (708) are slidably sleeved on the inner walls of the three sleeve blocks (707). One end of each sleeve rod (708) is fixedly connected to the opposite ends of the male tin-plated copper core (4) and the female tin-plated copper core (5).

2. The photovoltaic connector with more stable contact according to claim 1, characterized in that: The connection module (3) includes two L-shaped connection plates (301) fixedly connected to the outer surface of the female plug (2), and each of the two L-shaped connection plates (301) has a limiting hole (302) at one end.

3. A photovoltaic connector with more stable contact according to claim 2, characterized in that: Two connecting blocks (303) are fixedly connected to the outer surface of the male plug (1), and the two L-shaped connecting plates (301) are respectively inserted into the inner walls of the two connecting blocks (303).

4. A photovoltaic connector with more stable contact according to claim 3, characterized in that: Each of the connecting blocks (303) has a locking rod (304) slidably sleeved on its inner wall. The ends of the two locking rods (304) that are far apart from each other are fixedly connected to a fixing plate (305). The ends of the two fixing plates (305) that are close to each other are fixedly connected to a telescopic spring (306). The ends of the two telescopic springs (306) that are close to each other are respectively fixedly connected to the outer surfaces of the two connecting blocks (303).

5. A photovoltaic connector with more stable contact according to claim 4, characterized in that: The dimensions of the locking rod (304) are adapted to the dimensions of the limiting hole (302), and a paddle (8) is fixedly connected to the outer surface of each fixing piece (305).

6. A photovoltaic connector with more stable contact according to claim 1, characterized in that: The worm (704) is rotatably connected to the inner walls of the male plug (1) and the female plug (2), respectively, and a knob (705) is fixedly connected to the worm (704) shaft.

7. A photovoltaic connector with more stable contact according to claim 1, characterized in that: The male copper-plated tin inner core (4) and the female copper-plated tin inner core (5) are separated by a deformation groove (6) to form a three-lobed state.

8. A photovoltaic connector with more stable contact according to claim 1, characterized in that: The male plug (1) and female plug (2) are connected to clamping claw assemblies (9) at their opposite ends, and each clamping claw assembly (9) has a release tightening nut (10) threaded onto its outer surface.

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