Photovoltaic wire harness with anti-loosening connection structure and operation method thereof

Abstract

The invention discloses a photovoltaic wire harness with an anti-loosening connection structure and an operation method thereof, and the photovoltaic wire harness comprises a photovoltaic wire harness body, a male plug assembly and a female plug assembly, the male plug assembly and the female plug assembly are detachably installed at the two ends of the photovoltaic wire harness body and are matched with each other in a pluggable manner, and the photovoltaic wire harness is used for achieving the electric connection operation between photovoltaic wire harnesses. And the anti-loosening assembly is movably connected to the outer walls of the male plug assembly and the female plug assembly in a sleeving manner, so that further locking and anti-loosening operation on the male plug assembly and the female plug assembly which are matched in a plugging manner is realized. According to the invention, by adopting a photovoltaic wire harness structure with dual anti-loosening and convenient operation, connection loosening caused by an outdoor complex environment can be resisted, and tool-free rapid disassembly and assembly can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wiring harness application, in particular to a photovoltaic wiring harness with anti-loose connection structure and an operation method thereof. BACKGROUND

[0002] In a photovoltaic power generation system, the photovoltaic wiring harness is a "conductive bridge" connecting core devices such as photovoltaic modules, inverters, and combiner boxes, and its connection stability directly determines the conduction efficiency, operation safety, and operation and maintenance cost of the entire photovoltaic system.

[0003] In the prior art, the male and female plugs of the photovoltaic wiring harness are mostly single plug-in cooperation or simple threaded connection structure, which has obvious defects: the outdoor photovoltaic system is exposed to the wind, rain, temperature changes, and vibration environment for a long time, and the traditional connection structure is prone to "gap loosening", which may cause the increase of the conduction contact resistance and the increase of the power generation loss, or even cause arc, short circuit, and equipment burning, which has serious safety hazards. In addition, some anti-loose structures are complex in design, and special tools are required for installation and disassembly, which greatly increases the construction and maintenance difficulty of the photovoltaic system.

[0004] Therefore, the present application provides a photovoltaic wiring harness with an anti-loose connection structure and an operation method thereof. SUMMARY

[0005] The present application solves the technical problem of providing a photovoltaic wiring harness with an anti-loose connection structure and an operation method thereof, which adopts a "double anti-loose + convenient operation" photovoltaic wiring harness structure that can resist connection loosening caused by outdoor complex environment and realize tool-free quick disassembly.

[0006] To solve the above technical problems, one technical solution adopted by the present application is to provide a photovoltaic wiring harness with an anti-loose connection structure, comprising a photovoltaic wiring harness body, a male plug assembly and a female plug assembly which are detachably installed at both ends of the photovoltaic wiring harness and are mutually plug-in cooperable to realize electrical connection operation between the photovoltaic wiring harnesses, and an anti-loose assembly movably sleeved on the outer wall of the male plug assembly and the female plug assembly to realize further locking and anti-loose operation on the plug-in cooperated male plug assembly and female plug assembly.

[0007] The present application is further provided as follows: the male plug assembly comprises an insulating shell A, a threaded shell A is threadedly sleeved on the end face of the insulating shell A, and one end of the threaded shell A is sleeved on the outer wall of the photovoltaic wiring harness body, the end face of the photovoltaic wiring harness body is electrically connected with a conductive terminal B through a stabilizing block, and the conductive terminal B penetrates the insulating shell A, and the stabilizing block is embedded in a positioning groove formed in the end face of the insulating shell A through screw operation of the threaded shell A.

[0008] Through the technical scheme, the threaded shell A and the threaded shell B are in threaded cooperation with the insulating shell A and the insulating shell B to form "axial locking": on the one hand, the stable block is tightly embedded into the positioning groove through the screwing action, so that the relative displacement between the photovoltaic wire harness body and the male plug assembly is avoided, and the terminal loosening caused by the wire harness pulling is prevented; on the other hand, the conductive terminal B is precisely axially limited, so that the coaxiality of the conductive terminal B in the insulating shell A is ensured, and the position guarantee for the subsequent butt joint with the conductive terminal A is provided.

[0009] The application further provides that the female plug assembly comprises an insulating shell B, the end surface of the insulating shell B is threadedly sleeved with a threaded shell B, one end of the threaded shell B is sleeved with the outer wall of the photovoltaic wire harness body, the end surface of the photovoltaic wire harness body is electrically connected with a conductive terminal A through a positioning block, and the conductive terminal A extends to the inside of the insulating shell B, and the positioning block is tightly pressed against the end surface of the insulating shell B through the threaded shell B.

[0010] Through the technical scheme, the screwing and pressing action of the threaded shell B can firmly fix the positioning block on the end surface of the insulating shell B: the integrated fixation of the female plug assembly and the photovoltaic wire harness body is realized, and the "radial support + axial limitation" of the conductive terminal A is formed, so that the conductive terminal A is prevented from shaking in the insulating shell B due to vibration, the contact area of the conductive terminal A when butting with the conductive terminal B is ensured, and the contact resistance is reduced.

[0011] The application further provides that the end surface of the insulating shell A is provided with a protruding part, the protruding part is embedded in a groove on the end surface of the insulating shell B, and the conductive terminal B is inserted into the inside of the conductive terminal A to form an electrical connection.

[0012] Through the technical scheme, the "fitting and guiding" action of the protruding part and the groove can realize the "blind insertion alignment" of the male plug assembly and the female plug assembly: the operator does not need to visually align, but can ensure that the conductive terminal B is accurately inserted into the conductive terminal A through the cooperation of the protruding part and the groove, so that the poor contact or physical damage caused by the terminal misplacement is avoided; at the same time, the fitting structure can also enhance the radial integrity of the male plug assembly and the female plug assembly after butt joint, and reduce the relative deviation caused by outdoor vibration.

[0013] The application further provides that the end surface of the insulating shell A is symmetrically and fixedly connected with a plug strip near the outer wall, the plug strip is inserted into a plug hole on the end surface of the insulating shell B and is in a penetrating arrangement, the end surface of the plug strip is fixedly connected with a clamping block, the clamping block is clamped and connected with a limiting block arranged at the bottom of an extension part, the extension part is fixedly connected to one side of the plug hole, an arc-shaped curved groove is arranged at the bottom of the extension part, the end surface of the extension part is fixedly connected with an obliquely arranged extrusion block, and a plurality of anti-skid strips are fixedly connected to the surface of the extrusion block.

[0014] Through the technical scheme, the first heavy mechanical anti-loosening is formed, the through cooperation of the plug-in strip and the plug-in hole provides guidance for butt joint, the clamping of the clamping block and the limiting block can directly prevent the male plug assembly and the female plug assembly from being axially separated, the arc-shaped curved groove at the bottom of the extension part reserves a deformation space for the extension part, the extension part is bent by the extrusion block during disassembly, the limiting block is separated from the clamping block, and the anti-skid strip increases the friction of the hand, avoids finger slipping during disassembly, and improves operation convenience.

[0015] The application further provides that the outer wall of the insulating shell A is provided with a movable area A near the position of the threaded shell A, and a plurality of reinforcing strips A are fixedly connected to the outer wall of the insulating shell A in the circumferential direction away from the position of the threaded shell A.

[0016] Through the technical scheme, the movable area A provides an axial movement space for the movable ring A of the anti-loosening assembly, and ensures smooth locking operation; the reinforcing strips A are evenly distributed along the circumference, which can enhance the impact resistance of the front end of the insulating shell A, and if a slight collision occurs during outdoor installation, the reinforcing strips A can disperse stress to avoid cracking of the insulating shell A and prolong the service life.

[0017] The application further provides that the outer wall of the insulating shell B is uniformly fixedly connected with a plurality of reinforcing strips B in the circumferential direction near the position of the threaded shell B, and the outer wall of the insulating shell B is provided with a movable area B away from the position of the threaded shell B.

[0018] Through the technical scheme, the reinforcing strips B can enhance the tensile strength of the rear end of the insulating shell B to avoid deformation of the shell caused by pulling of the wire harness; the movable area B provides a stable installation space for the movable ring B to ensure that the cooperation action of the movable ring A and the movable ring B is accurately synchronized, and the locking effect of the anti-loosening assembly is guaranteed.

[0019] The application further provides that the anti-loosening assembly comprises a movable ring A at the movable area A and a movable ring B at the movable area B, the outer wall of the movable ring A is fixedly connected with a protrusion A in a symmetrical manner, the outer wall of the movable ring B is fixedly connected with a protrusion B in a symmetrical manner, the protrusion A penetrates the anti-loosening hole formed in the middle of the protrusion B through a U-shaped bracket fixedly connected to the middle of the protrusion A, and the inclined block fixedly connected to the end face of the U-shaped bracket is arranged in a limiting manner.

[0020] Through the technical scheme, the second heavy mechanical anti-loosening is formed, after the U-shaped bracket penetrates the anti-loosening hole, the inclined block is first contracted and then expanded and reset under the extrusion of the anti-loosening hole, and the protrusion B forms a “reverse clamping limiting”, which can effectively prevent the movable ring A and the movable ring B from being separated; the structure is designed as “non-tool locking”, and the operator only needs to push the movable ring to complete the locking, which greatly improves the installation efficiency.

[0021] The application further provides that the side wall of the movable ring A is fixedly connected with a spring piece in a symmetrical manner, and the spring piece abuts against the side wall of the movable area A.

[0022] Through the above technical solution, the elasticity of the spring plate achieves a dual function: first, it provides radial preload to the movable ring A, preventing it from swaying randomly within the movable area A and ensuring the stability of the anti-loosening component; second, when the movable ring A is pushed to lock, the spring plate is squeezed to generate a reset elastic force, which drives the movable ring A to pull the movable ring B in the opposite direction, so that the male and female components fit tightly together, eliminating the mating gap and further resisting vibration and loosening.

[0023] On the other hand, a method for operating a photovoltaic wire harness with an anti-loosening connection structure is provided, including the following steps: S1. First, insert the conductive terminal B inside the insulating shell A into the conductive terminal A inside the insulating shell B. As the conductive terminal B is inserted, the insert is inserted into the corresponding hole, and the end face locking block engages with the limiting block at the bottom of the extension. At the same time, the protrusion is embedded in the groove that matches the end face of the insulating shell B, thus realizing the electrical connection between the conductive terminal A and the conductive terminal B. S2. Next, push the movable ring A located inside the movable area A so that the U-shaped bracket on the protrusion passes through the anti-disengagement hole on the protrusion B. After insertion, the inclined block on the end face of the U-shaped bracket quickly opens and resets after being squeezed by the anti-disengagement hole. At this time, the elasticity of the spring sheet squeezed by the movable ring A is used to make the movable ring A drive the inclined block to stably tighten the movable ring B, thereby achieving a firm connection between the male and female plug components. S3. When it needs to be disassembled, simply press the inclined block on the end face of the U-shaped frame relative to it so that it corresponds to the anti-disengagement hole, and the spring's restoring elasticity can be used to achieve quick disengagement. S4. Next, the extrusion block on the end face of the extension is extruded, so that the extension is bent and deformed through the bending groove, thereby causing the limiting block to disengage from the locking block. At the same time, the insulating shell A and the insulating shell B are pulled out by force to complete the disassembly operation.

[0024] The beneficial effects of this invention are as follows: 1. The photovoltaic wire harness with anti-loosening connection structure proposed in this invention and its operation method achieve a double anti-loosening effect by engaging the locking block and the limiting block and the U-shaped frame and the inclined block, combined with the tensioning force of the spring sheet, while maintaining high reliability; 2. The photovoltaic wire harness with anti-loosening connection structure proposed in this invention and its operation method use the cooperation of protrusions and grooves to guide the connection between terminals to ensure coaxiality and stability during electrical connection use; 3. The photovoltaic wire harness with anti-loosening connection structure proposed in this invention and its operation method achieve installation by using an alignment and pushing operation and disassembly by squeezing and pulling operation, thereby achieving rapid installation and disassembly without tools, thus improving the efficiency of the entire assembly and disassembly process. Attached Figure Description

[0025] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a diagram showing the connection and installation structure of the present invention; Figure 3 This is a cross-sectional view of the connection and installation of the present invention; Figure 4 This is a structural diagram of the common insertion component in this invention; Figure 5 This is a structural diagram of the female connector assembly in this invention; Figure 6 This is a diagram showing the connection and installation structure of the male and female connectors in this invention. Figure 7 for Figure 6 Enlarged view of point A in the middle; Figure 8 This is a structural diagram of the anti-loosening component in this invention.

[0026] In the diagram: 1. Photovoltaic harness body; 11. Conductive terminal A; 111. Stabilizing block; 12. Conductive terminal B; 121. Positioning block; 2. Male connector assembly; 21. Insulating housing A; 211. Positioning groove; 212. Moving area A; 213. Reinforcing strip A; 214. Insert strip; 215. Locking block; 216. Protrusion; 22. Threaded housing A; 3. Female connector assembly; 31. Insulating housing B; 311. Reinforcing strip B; 312. Moving area B; 313. Socket; 314. Extension; 315. Bending groove; 316. Limiting block; 317. Pressing block; 318. Anti-slip strip; 32. Threaded housing B; 4. Anti-loosening component; 41. Movable ring A; 411. Protrusion A; 412. U-shaped frame; 413. Inclined block; 414. Spring piece; 42. Movable ring B; 421. Protrusion B; 422. Anti-loosening hole. Detailed Implementation

[0027] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0028] like Figure 1 and Figure 2 As shown, a photovoltaic wire harness with an anti-loosening connection structure includes a photovoltaic wire harness body 1, a male plug assembly 2 and a female plug assembly 3 detachably installed at both ends of the photovoltaic wire harness body 1 and mutually pluggable, for realizing electrical connection operation between photovoltaic wire harnesses.

[0029] like Figure 3 and Figure 4As shown, the male connector assembly 2 includes an insulating shell A21. An active area A212 is provided on the outer wall of the insulating shell A21 near the threaded shell A22. Multiple reinforcing strips A213 are fixedly connected in the circumferential direction on the outer wall of the insulating shell A21 away from the threaded shell A22. The active area A212 provides axial movement space for the active ring A41 of the anti-loosening assembly to ensure smooth locking operation. The reinforcing strip A213 is evenly distributed along the circumference, which can enhance the impact resistance of the front end of the insulating shell A21. If a slight collision occurs during outdoor installation, the reinforcing strip A213 can disperse the stress, prevent the insulating shell A21 from cracking, and extend its service life. The end face of the insulating shell A21 is provided with a protrusion 216, which is embedded in the groove on the end face of the insulating shell B31. At the same time, the conductive terminal B12 is inserted into the interior of the conductive terminal A11 to form an electrical connection. The "fitting and guiding" function of the protrusion 216 and the groove can realize the "blind insertion alignment" of the male plug assembly 2 and the female plug assembly 3. The operator does not need to visually align, but can ensure that the conductive terminal B12 is accurately inserted into the conductive terminal A11 by the cooperation of the protrusion 216 and the groove, avoiding poor contact or physical damage caused by terminal misalignment. Meanwhile, the interlocking structure also enhances the radial integrity of the male connector 2 and female connector 3 after docking, reducing relative displacement caused by outdoor vibration. The end face of the insulating shell A21 is threaded with a threaded shell A22, and one end of the threaded shell A22 is fitted onto the outer wall of the photovoltaic harness body 1. The end face of the photovoltaic harness body 1 is electrically connected to a conductive terminal B12 through a stabilizing block 121, and the conductive terminal B12 penetrates through the insulating shell A21. The stabilizing block 121 is embedded into the positioning groove 211 opened on the end face of the insulating shell A21 through the screw operation of the threaded shell A22. The threaded engagement between the threaded shell A22 and the insulating shell A21 forms an "axial lock": on the one hand, the screw tightening action tightly embeds the stabilizing block 121 into the positioning groove 211, preventing relative displacement between the photovoltaic harness body 1 and the male connector 2, and preventing the terminal from loosening due to harness pulling; on the other hand, it forms a precise axial limit for the conductive terminal B12, ensuring its coaxiality within the insulating shell A21, and providing positional guarantee for subsequent docking with the conductive terminal A11.

[0030] like Figure 3 , Figure 5 and Figure 6As shown, the female connector assembly 3 includes an insulating shell B31. A threaded shell B32 is threaded onto the end face of the insulating shell B31, and one end of the threaded shell B32 is fitted onto the outer wall of the photovoltaic harness body 1. The end face of the photovoltaic harness body 1 is electrically connected to a conductive terminal A11 through a positioning block 111, and the conductive terminal A11 extends into the interior of the insulating shell B31. At the same time, the positioning block 111 is screwed against the end face of the insulating shell B31 by the threaded shell B32. The screwing action of the threaded shell B32 can firmly fix the positioning block 111 to the end face of the insulating shell B31. This achieves both the integrated fixing of the female connector assembly 3 and the photovoltaic harness body 1 and the "radial support + axial limit" of the conductive terminal A11, preventing the conductive terminal A11 from shaking inside the insulating shell B31 due to vibration, ensuring the contact area when it docks with the conductive terminal B12, and reducing the contact resistance. Multiple reinforcing strips B311 are evenly fixedly connected circumferentially on the outer wall of the insulating shell B31 near the threaded shell B32. A movable area B312 is provided on the outer wall of the insulating shell B31 away from the threaded shell B32. The reinforcing strips B311 can enhance the tensile strength of the wire harness connection end at the rear end of the insulating shell B31 and prevent the shell from deforming due to wire harness pulling. The movable area B312 provides a stable installation space for the movable ring B42, ensuring that its cooperation with the movable ring A41 is precise and synchronized, and ensuring the locking effect of the anti-loosening component 4.

[0031] like Figures 5-7 As shown, insert strips 214 are symmetrically fixedly connected to the end face of insulating shell A21 near the outer wall. Insert strips 214 are inserted into the insertion holes 313 on the end face of insulating shell B31, and are arranged through the hole. The through-hole engagement of insert strips 214 and insertion holes 313 provides guidance for docking. A locking block 215 is fixedly connected to the end face of insert strip 214, and is engaged with a limiting block 316 at the bottom of extension 314. The engagement of locking block 215 and limiting block 316 directly prevents the male and female connectors 2 and 3 from axially separating. Extension 314 is fixed... Connected to one side of the socket 313, the bottom of the extension 314 is provided with an arc-shaped bending groove 315. The end face of the extension 314 is fixedly connected with an obliquely arranged pressing block 317. The arc-shaped bending groove 315 at the bottom of the extension 314 provides a space for deformation, so that the extension 314 can be bent by the pressing block 317 during disassembly, so that the limiting block 316 can be disengaged from the locking block 215. The surface of the pressing block 317 is fixedly connected with multiple anti-slip strips 318, which increase the friction of the hand to prevent fingers from slipping during disassembly and improve the ease of operation.

[0032] like Figure 8As shown, an anti-loosening component 4 is movably fitted onto the outer walls of the male connector 2 and the female connector 3 to further lock and prevent loosening of the male connector 2 and the female connector 3 after insertion and removal. The anti-loosening component 4 includes a movable ring A41 located in the movable area A212 and a movable ring B42 located in the movable area B312. A protrusion A411 is symmetrically fixedly connected to the outer wall of the movable ring A41, and a protrusion B421 is symmetrically fixedly connected to the outer wall of the movable ring B42. The protrusion A411 passes through a U-shaped frame 412 fixedly connected in its middle. The anti-loosening hole 422 opened in the middle of the protrusion B421 and the inclined block 413 fixedly connected to the end face of the U-shaped frame 412 are set in a limiting and fixed setting to form a second mechanical anti-loosening. After the U-shaped frame 412 passes through the anti-loosening hole 422, the inclined block 413 first shrinks and then opens and resets under the pressure of the anti-loosening hole 422, forming an "inverted limit" with the protrusion B421, which can effectively prevent the movable ring A41 from separating from the movable ring B42. This structure is a "tool-free locking" design. The operator only needs to push the movable ring to complete the locking, which greatly improves the installation efficiency. The sidewall of the movable ring A41 is symmetrically fixed with spring pieces 414, which abut against the sidewall of the movable area A212. The elasticity of the spring pieces 414 achieves a dual function: first, it provides radial preload to the movable ring A41 to prevent it from shaking freely in the movable area A212 and ensure the stability of the anti-loosening component 4; second, when the movable ring A41 is pushed to lock, the spring pieces 414 are squeezed and generate a reset elastic force, which drives the movable ring A41 to pull the movable ring B42 in the opposite direction, so that the male plug component 2 and the female plug component 3 fit tightly, eliminate the docking gap, and further resist vibration and loosening.

[0033] like Figures 1-8 As shown, an operating method for a photovoltaic wire harness with an anti-loosening connection structure includes the following steps: S1. First, insert the conductive terminal B12 inside the insulating shell A21 into the conductive terminal A11 inside the insulating shell B31. As the conductive terminal B12 is inserted, the insert 214 is inserted into the corresponding socket 313, and the end face locking block 215 engages with the limiting block 316 at the bottom of the extension 314. At the same time, the protrusion 216 is embedded in the groove that matches the end face of the insulating shell B31, so as to realize the electrical connection between the conductive terminal A11 and the conductive terminal B12. S2. Next, push the movable ring A41 located inside the movable area A212 so that the U-shaped bracket 412 on the protrusion A411 passes through the anti-disengagement hole 422 on the protrusion B421. After insertion, the inclined block 413 on the end face of the U-shaped bracket 412 is squeezed by the anti-disengagement hole 422 and quickly opens and resets. At this time, the elasticity of the spring piece 414 squeezed by the movable ring A41 is used to make the movable ring A41 drive the inclined block 413 to stably tighten the movable ring B42, thereby realizing a firm connection between the male plug assembly 2 and the female plug assembly 3. S3. When it is necessary to disassemble it, simply press the inclined block 413 on the end face of the U-shaped frame 412 so that it corresponds to the anti-disengagement hole 422, and the spring 414 can be used to achieve quick disengagement. S4. Next, the pressing block 317 on the end face of the extension 314 is pressed, so that the extension 314 bends and deforms through the bending groove 315, thereby causing the limiting block 316 to disengage from the locking block 215. At the same time, the insulating shell A21 and the insulating shell B31 are pulled out by force to complete the disassembly operation.

[0034] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A photovoltaic wire harness with an anti-loosening connection structure, characterized in that: Including the photovoltaic harness body (1); The male plug assembly (2) and female plug assembly (3) are detachably installed at both ends of the photovoltaic harness body (1) and can be plugged into each other to realize the electrical connection operation between the photovoltaic harnesses; The anti-loosening component (4) is movably sleeved on the outer wall of the male plug component (2) and the female plug component (3) to further lock and prevent loosening of the male plug component (2) and the female plug component (3) after insertion and removal.

2. A photovoltaic wire harness with an anti-loosening connection structure according to claim 1, characterized in that: The male connector assembly (2) includes an insulating shell A (21), and a threaded shell A (22) is threaded onto the end face of the insulating shell A (21). One end of the threaded shell A (22) is fitted onto the outer wall of the photovoltaic harness body (1). The end face of the photovoltaic harness body (1) is electrically connected to a conductive terminal B (12) through a stabilizing block (121), and the conductive terminal B (12) penetrates through the insulating shell A (21). The stabilizing block (121) is embedded in the positioning groove (211) opened on the end face of the insulating shell A (21) by the spiral operation of the threaded shell A (22).

3. A photovoltaic wire harness with an anti-loosening connection structure according to claim 2, characterized in that: The female connector assembly (3) includes an insulating shell B (31), and a threaded shell B (32) is threaded onto the end face of the insulating shell B (31). One end of the threaded shell B (32) is fitted onto the outer wall of the photovoltaic harness body (1). The end face of the photovoltaic harness body (1) is electrically connected to a conductive terminal A (11) through a positioning block (111). The conductive terminal A (11) extends into the interior of the insulating shell B (31). At the same time, the positioning block (111) is screwed against the end face of the insulating shell B (31) through the threaded shell B (32).

4. A photovoltaic wire harness with an anti-loosening connection structure according to claim 3, characterized in that: The end face of the insulating shell A (21) is provided with a protrusion (216), and the protrusion (216) is embedded in the groove of the end face of the insulating shell B (31) that is adapted to it, while the conductive terminal B (12) is inserted into the interior of the conductive terminal A (11) to form an electrical connection.

5. A photovoltaic wire harness with an anti-loosening connection structure according to claim 4, characterized in that: The insulating shell A (21) has a symmetrically fixed insert (214) near the outer wall. The insert (214) is inserted into the insertion hole (313) on the end face of the insulating shell B (31) and is arranged through the hole. The end face of the insert (214) is fixedly connected to a locking block (215) and is engaged with a limiting block (316) at the bottom of the extension (314) by the locking block (215). The extension (314) is fixedly connected to one side of the insertion hole (313). The bottom of the extension (314) has an arc-shaped bending groove (315). The end face of the extension (314) is fixedly connected to an obliquely arranged extrusion block (317), and the surface of the extrusion block (317) is fixedly connected to multiple anti-slip strips (318).

6. A photovoltaic wire harness with an anti-loosening connection structure according to claim 5, characterized in that: An active area A (212) is provided on the outer wall of the insulating shell A (21) near the threaded shell A (22), and multiple reinforcing strips A (213) are fixedly connected in the circumferential direction on the outer wall of the insulating shell A (21) away from the threaded shell A (22).

7. A photovoltaic wire harness with an anti-loosening connection structure according to claim 6, characterized in that: Multiple reinforcing strips B (311) are uniformly fixedly connected in the circumferential direction on the outer wall of the insulating shell B (31) near the threaded shell B (32), and an active area B (312) is opened on the outer wall of the insulating shell B (31) away from the threaded shell B (32).

8. A photovoltaic wire harness with an anti-loosening connection structure according to claim 7, characterized in that: The anti-loosening component (4) includes a movable ring A (41) located in the movable area A (212) and a movable ring B (42) located in the movable area B (312). The outer wall of the movable ring A (41) is symmetrically fixedly connected with a protrusion A (411), and the outer wall of the movable ring B (42) is symmetrically fixedly connected with a protrusion B (421). The protrusion A (411) passes through the anti-loosening hole (422) opened in the middle of the protrusion B (421) through a U-shaped frame (412) fixedly connected in its middle, and is fixedly positioned by an inclined block (413) fixedly connected through the end face of the U-shaped frame (412).

9. A photovoltaic wire harness with an anti-loosening connection structure according to claim 8, characterized in that: The sidewall of the movable ring A (41) is symmetrically fixed with a spring piece (414), and the spring piece (414) abuts against the sidewall of the movable area A (212).

10. An operating method for a photovoltaic wire harness with an anti-loosening connection structure according to any one of claims 1-9, characterized in that: Includes the following steps: S1. First, insert the insulating shell A (21) with its internal conductive terminal B (12) into the conductive terminal A (11) inside the insulating shell B (31). As the conductive terminal B (12) is inserted, the insert (214) is inserted into the corresponding socket (313), and the end face locking block (215) engages with the limiting block (316) at the bottom of the extension (314). At the same time, the protrusion (216) is embedded in the groove that matches the end face of the insulating shell B (31), so as to realize the electrical connection between the conductive terminal A (11) and the conductive terminal B (12). S2. Next, push the movable ring A (41) located inside the movable area A (212) so that the U-shaped frame (412) on the protrusion A (411) passes through the anti-disengagement hole (422) provided on the protrusion B (421). After insertion, the inclined block (413) provided on the end face of the U-shaped frame (412) is squeezed by the anti-disengagement hole (422) and quickly opens and resets. At this time, the elasticity of the spring piece (414) squeezed by the movable ring A (41) is used to make the movable ring A (41) drive the inclined block (413) to stably tighten the movable ring B (42), thereby realizing a firm connection between the male plug assembly (2) and the female plug assembly (3). S3. When it is necessary to disassemble it, simply press the inclined block (413) on the end face of the U-shaped frame (412) so that it corresponds to the anti-disengagement hole (422), and the spring sheet (414) can be used to achieve quick disengagement. S4. Next, the extrusion block (317) on the end face of the extension (314) is extruded, so that the extension (314) bends through the bending groove (315), thereby causing the limiting block (316) to disengage from the locking block (215). At the same time, the insulating shell A (21) and the insulating shell B (31) are pulled out by force to complete the disassembly operation.

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