Photovoltaic connector joint

Abstract

The present invention relates to the field of photovoltaic connection technology, specifically a photovoltaic connector joint, comprising a male plug and a female plug located to the right of the male plug, the male plug comprising a fixed cylinder and a plug joint, the female plug comprising an inserting sleeve, the fixed cylinder being provided with a locking unit and a vibration-damping unit, and the plug joint being provided with a double-end sealing unit. The present invention implements circumferential position locking of the plugged-in fixed cylinder and the inserting sleeve by means of a snap plate and a matching group to prevent relative rotation between the two, and implements axial position locking of the plugged-in fixed cylinder and the inserting sleeve by means of a locking rod and a matching group, that is, a double multi-directional locking method is adopted to ensure the plugging stability of the fixed cylinder and the inserting sleeve, and at the same time, radial elastic buffering is implemented on the plugged-in fixed cylinder and the inserting sleeve by means of a vibration-damping group through the snap plate, thereby reducing the influence of continuous vibration generated by external factors on the plugging point of the fixed cylinder and the inserting sleeve, thereby ensuring a tight connection between the male plug and the female plug.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic connection, in particular to a photovoltaic connector joint. Background Art

[0002] Photovoltaic connector joints are key electrical connection components in solar photovoltaic power generation systems. They are mainly used to achieve fast, safe and reliable connection of DC cables between photovoltaic modules, between modules and combiner boxes, and between other parts of the system. Photovoltaic connectors usually need to work for a long time in complex outdoor environments, such as wind, high temperature and other environments. Therefore, the reliability, sealing and heat dissipation performance of their structure directly affect the operating stability and service life of the entire photovoltaic system.

[0003] Most common photovoltaic connectors currently use a plug-in structure, primarily consisting of a male plug and a female plug. The mechanical connection between the male and female plugs is achieved through a convex-concave structure that matches the buckle and the slot, and a single sealing ring is used to seal the plug-in connection between the male and female plugs. However, the following problems may arise during use: the buckle is usually made of a non-metallic material with a certain degree of elasticity, and the continuous vibration caused by factors such as wind and equipment operation in outdoor environments causes constant tiny relative displacements and collisions between the engaging parts of the buckle. Relying solely on the convex-concave structure that matches the buckle and the slot to achieve mechanical connection between the male and female plugs may result in insufficient connection stability. After a long period of accumulation, the buckle may gradually loosen, causing the male and female plugs to no longer be effectively and tightly connected, or even causing the risk of separation, which in turn affects the continued stable operation of the photovoltaic system. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: a photovoltaic connector joint, comprising a male plug and a female plug located on the right side of the male plug, the male plug comprising a fixed cylinder and a plug joint, the female plug comprising an inserting sleeve, a locking unit and a vibration reduction unit are provided on the fixed cylinder, and a double-end sealing unit is provided on the plug joint; the locking unit comprises a rotating ring arranged at the right end of the outer side of the fixed cylinder through a connecting group, a plurality of circumferentially evenly arranged locking rods are fixedly installed on the right end of the inner side of the rotating ring, a plurality of circumferentially evenly arranged L-shaped locking grooves are opened on the left end of the outer side of the plug-in sleeve, and the locking rods and the locking grooves cooperate with the fixed cylinder and the plug joint to plug in opposite directions. The coupling sleeve implements axial locking; the vibration damping unit includes a shock-absorbing group arranged between the rotating ring and the fixed cylinder, and the shock-absorbing group is provided with a plurality of snap plates arranged evenly in the circumference, and two left-right arranged locking blocks are fixedly installed on the right ends of the opposite sides of the plurality of snap plates; a plurality of circumferentially evenly arranged U-shaped rods are fixedly installed on the outer left end of the plug-in sleeve. Under the action of the shock-absorbing group, the snap plates and the U-shaped rods cooperate to implement circumferential locking and radial elastic buffering of the plug-in fixed cylinder and the plug-in sleeve. At the same time, the U-shaped rods cooperate with the corresponding two locking blocks to implement secondary axial locking of the plug-in fixed cylinder and the plug-in sleeve, and ensure the stable implementation of radial elastic buffering.

[0005] Preferably, the left end of the transverse section of the locking groove passes through the left end of the plug-in sleeve, and the locking rod and the arcuate section of the locking groove cooperate to implement axial locking of the plugged fixed cylinder and the plug-in sleeve.

[0006] Preferably, the connecting group includes a connecting sleeve that is slidably mounted on the outside of the fixed cylinder through multiple sliding blocks. A plurality of arc grooves evenly arranged circumferentially are opened on the outside of the connecting sleeve. An arc slider is slidably installed in the arc groove through an arc spring. The outer side of the arc slider is fixedly connected to the inner wall of the rotating ring.

[0007] Preferably, the double-end sealing unit includes two left and right sealing rings installed on the outside of the plug connector through an expansion group, and the expansion group is used to drive the two sealing rings to expand radially and press against the inner wall of the plug-in sleeve.

[0008] Preferably, the expansion group includes an expansion ring fixedly sleeved on the outside of the plug connector and located on the right side of the sealing ring, the left end of the outer side of the expansion ring is set as a bevel, and the bevel of the expansion ring is in contact with the corresponding sealing ring, and a limit ring is fixedly sleeved on the right end of the outer side of the expansion ring; the expansion group also includes a pushing ring in contact with the left side of the sealing ring, and the pushing ring is slidably sleeved left and right on the outside of the plug connector.

[0009] Preferably, L-shaped pushing rods are fixedly installed on the opposite sides of multiple sliding blocks, and the pushing rods are connected to the fixed tube for sliding left and right. The right end of the transverse section of the pushing rod slides left and right through the right end of the fixed tube and is in contact with the left end of the pushing ring on the left. A synchronization rod is fixedly installed between the two pushing rings, and the synchronization rod is connected to the expansion ring on the left for sliding left and right.

[0010] Preferably, the shock-absorbing group includes a fixed ring fixedly mounted on the left end of the outer side of the fixed cylinder, and a plurality of circumferentially evenly arranged sliding grooves are opened at the right end of the fixed ring. The snap plate is radially slidably installed in the corresponding sliding groove, and a synchronous slider is slidably installed in the sliding groove, and the synchronous slider is located on the side of the corresponding snap plate close to the middle of the fixed ring, and a shock-absorbing spring is connected between the synchronous slider and the corresponding snap plate.

[0011] Preferably, a matching rod is fixedly installed on the right end of the synchronous slider, and an inclined matching groove is opened at the position corresponding to the matching rod on the left end of the rotating ring, and the matching rod is slidably installed in the corresponding matching groove.

[0012] Preferably, a heat dissipation cavity group is provided between the plug connector and the plug sleeve and between the two sealing rings, and the heat dissipation cavity group is used to dissipate heat at the plug connection point between the plug connector and the plug sleeve.

[0013] Preferably, the heat dissipation cavity group includes a plurality of circumferentially evenly arranged heat dissipation holes opened on the outside of the plug-in sleeve, and the heat dissipation holes are arranged as an inclined structure; the heat dissipation cavity group also includes a plurality of circumferentially evenly arranged spiral guide grooves set on the outside of the plug connector, and the rotation direction of the spiral guide grooves is consistent with the inclination direction of the heat dissipation holes.

[0014] The beneficial effects of the present invention are: 1. The present invention implements circumferential position locking of the plug-in fixed cylinder and the plug-in sleeve by cooperating with the snap plate and the matching group to prevent the two from rotating relative to each other, and implements axial position locking of the plug-in fixed cylinder and the plug-in sleeve by setting a locking rod and the matching group to prevent the two from moving relative to each other left and right; that is, a double multi-directional locking method is adopted to ensure the plug-in stability of the fixed cylinder and the plug-in sleeve.

[0015] 2. When the fixed cylinder or the plug-in sleeve generates continuous vibration due to external factors such as wind force and equipment operation, the present invention also implements radial elastic buffering on the plugged fixed cylinder and the plug-in sleeve through the shock-absorbing group through the snap plate, thereby reducing the impact of the continuous vibration on the plug-in point of the fixed cylinder and the plug-in sleeve, thereby ensuring that the male plug and the female plug are tightly connected, ensuring that the photovoltaic system continues to generate electricity.

[0016] 3. The present invention further implements axial position locking of the plugged fixed cylinder and the plug-in sleeve by providing a locking block and a corresponding U-shaped rod, thereby achieving secondary axial locking, improving the connection stability of the male plug and the female plug, and also ensuring the axial position stability of the snap plate and the U-shaped rod. On the one hand, it ensures the continuous and stable existence of the circumferential position locking, and on the other hand, it ensures the stability of the radial elastic buffering implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and examples.

[0018] Figure 1It is a schematic diagram of the three-dimensional structure of the male plug and the female plug of the present invention in an unconnected state.

[0019] Figure 2 It is a cross-sectional view of the fixing cylinder, the plug connector, the shock absorbing group, the rotating ring and the connecting group of the present invention.

[0020] Figure 3 It is a three-dimensional structural diagram of the synchronous slider, shock-absorbing spring and matching rod of the present invention.

[0021] Figure 4 It is a cross-sectional view of the rotating ring, arc-shaped slider, arc-shaped spring and connecting sleeve of the present invention.

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the inserting sleeve, locking groove and U-shaped rod of the present invention.

[0023] Figure 6 It is a cross-sectional view of the plug connector and the plug-in sleeve of the present invention when plugged together.

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the snap plate, locking block and U-shaped rod of the present invention.

[0025] Figure 8 This is a state change diagram of the sealing ring of the present invention when it expands radially.

[0026] 1. Male plug; 11. Fixed cylinder; 12. Plug connector; 21. Plug-in sleeve; 211. Locking groove; 212. U-shaped rod; 3. Locking unit; 31. Connecting group; 311. Connecting sleeve; 312. Arc spring; 313. Arc slider; 314. Pushing rod; 32. Rotating ring; 33. Locking rod; 4. Double-end sealing unit; 41. Expansion group; 411. Expansion ring; 412. Limiting ring; 413. Pushing ring; 414. Synchronizing rod; 42. Sealing ring; 5. Vibration damping unit; 51. Shock damping group; 511. Fixed ring; 512. Synchronizing slider; 513. Shock damping spring; 514. Matching rod; 52. Buckle plate; 53. Locking block; 6. Heat dissipation cavity group; 61. Heat dissipation hole; 62. Spiral guide groove; 7. Cable; 8. Locking group; 9. Inner core terminal. DETAILED DESCRIPTION

[0027] The embodiments described below are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in the art or the product instructions shall be followed.

[0028] See Figure 1 、 Figure 6 and Figure 7A photovoltaic connector includes a male plug 1 and a female plug located on the right side of the male plug 1. The male plug 1 includes a fixing cylinder 11 and a plug connector 12. The female plug includes a plug sleeve 21. The fixing cylinder 11 is provided with a locking unit 3 and a vibration reduction unit 5. The plug connector 12 is provided with a double-end sealing unit 4. A heat dissipation cavity group 6 is provided between the plug connector 12 and the plug sleeve 21 and at a position corresponding to the double-end sealing unit 4. The heat dissipation cavity group 6 is used to achieve the effect of heat dissipation at the plug connection between the plug connector 12 and the plug sleeve 21.

[0029] It should be noted that locking groups 8 for locking the cable 7 are installed on the opposite sides of the fixed cylinder 11 and the plug-in sleeve 21. The locking group 8 adopts the existing technology and its specific structure is not repeated in the present invention. When installing the cable 7, the cable 7 and the inner core terminal 9 are first crimped together, and then the inner core terminal 9 corresponding to the male plug 1 is inserted into the fixed cylinder 11 and the plug connector 12 from the left locking group 8 (that is, the locking group 8 installed on the fixed cylinder 11), and the inner core terminal 9 corresponding to the female plug is inserted into the plug-in sleeve 21 from the right locking group 8 (that is, the locking group 8 installed on the plug-in sleeve 21), and the two inner core terminals 9 corresponding to the male plug 1 and the female plug can be plugged together. After the two inner core terminals 9 are inserted, the corresponding cable 7 is locked by the locking group 8. When the plug connector 12 and the plug-in sleeve 21 are plugged together, the two inner core terminals 9 are also plugged together to realize the connection of the two cables 7 in the photovoltaic power generation system.

[0030] It should be noted that a clamping group (not shown in the figure) is installed on both the fixed cylinder 11 and the plug-in sleeve 21. The clamping group adopts the existing technology and its specific structure is not described in detail in the present invention; the clamping group realizes the positioning and locking of the inner core terminal 9 by means of a clamping spring. The clamping group corresponding to the fixed cylinder 11 is arranged on its inner side wall, and the clamping group corresponding to the plug-in sleeve 21 is arranged at a position where its inner side wall does not contact the plug connector 12. When the inner core terminal 9 is inserted into the fixed cylinder 11 or the plug-in sleeve 21, the clamping group will make a "click" sound, indicating that the inner core terminal 9 is inserted into the fixed cylinder 11 or the plug-in sleeve 21, the clamping group will make a "click" sound, which indicates that the inner core terminal 9 is inserted into place and the clamping group locks the inner core terminal 9.

[0031] The present invention is used to connect two cables 7 in a solar photovoltaic power generation system. The present invention adopts a double locking method of circumferential locking and axial locking to increase the connection stability of the male plug 1 and the female plug when they are plugged in, reduce the impact of continuous vibration on the plug-in point of the male plug 1 and the female plug, ensure that the male plug 1 and the female plug are tightly connected, and ensure that the photovoltaic system continues to generate electricity. At the same time, the present invention can effectively dissipate heat at the plug-in point of the male plug 1 and the female plug, thereby ensuring the service life of the male plug 1 and the female plug after plugging.

[0032] Specifically, the operator first inserts the two inner core terminals 9 after wiring into the corresponding fixed cylinder 11 and plug-in sleeve 21, and locks the corresponding cable 7 through the locking group 8, then inserts the plug connector 12 into the plug-in sleeve 21, and makes the left end of the plug-in sleeve 21 abut against the right end of the fixed cylinder 11, and at the same time, the two inner core terminals 9 are plugged together, and then the operator controls the locking unit 3 to axially lock the fixed cylinder 11 and the plug-in sleeve 21, and at the same time controls the vibration reduction unit 5 to circumferentially lock the fixed cylinder 11 and the plug-in sleeve 21, and the vibration reduction unit 5 is locked. Element 5 can also perform secondary axial locking on the fixed cylinder 11 and the plug-in sleeve 21, thereby increasing the stability between the fixed cylinder 11 and the plug-in sleeve 21 after insertion, so that the fixed cylinder 11 will not rotate relative to each other or move relative to the left and right directions after insertion. When the fixed cylinder 11 or the plug-in sleeve 21 produces continuous vibration due to external wind force, equipment operation and other factors, the vibration reduction unit 5 can apply radial elastic buffering between the fixed cylinder 11 and the plug-in sleeve 21, thereby reducing the relative vibration between the fixed cylinder 11 and the plug-in sleeve 21.

[0033] When the plug connector 12 and the plug sleeve 21 are plugged together, under the action of the heat dissipation cavity group 6, the heat generated at the plug connection of the plug connector 12 and the plug sleeve 21 can be dissipated quickly and in time, preventing excessive heat accumulation at the plug connection of the plug connector 12 and the plug sleeve 21, and the double-end sealing unit 4 seals the left and right ends between the plug connector 12 and the plug sleeve 21, thereby achieving heat dissipation at the plug connection of the plug connector 12 and the plug sleeve 21 while preventing dust or water from penetrating into the two inner core terminals 9.

[0034] See Figure 1 、 Figure 2 and Figure 6 The locking unit 3 includes a rotating ring 32 arranged at the right end of the outer side of the fixed cylinder 11 through a connecting group 31, and a plurality of locking rods 33 arranged evenly in the circumference are fixedly installed on the right end of the inner side of the rotating ring 32. A plurality of L-shaped locking grooves 211 arranged evenly in the circumference are opened at the left end of the outer side of the plug-in sleeve 21. The locking groove 211 is composed of a transverse section and an arc section. The transverse section and the arc section form an L shape. The locking rod 33 and the locking groove 211 cooperate to realize axial locking of the fixed cylinder 11 and the plug-in sleeve 21; the left end of the transverse section of the locking groove 211 passes through the left end of the plug-in sleeve 21, and the locking rod 33 and the arc section of the locking groove 211 cooperate to lock the position of the plug connector 12 and the plug-in sleeve 21 in the left and right directions (i.e., axial directions).

[0035] See Figure 1 、 Figure 2 、 Figure 3 and Figure 6The vibration reduction unit 5 includes a shock-absorbing group 51 provided between the rotating ring 32 and the fixed cylinder 11. The shock-absorbing group 51 is provided with a plurality of snap plates 52 evenly arranged in the circumferential direction. Two left-right arranged locking blocks 53 are fixedly installed at the right ends of the opposite sides of the plurality of snap plates 52.

[0036] See Figure 1 、 Figure 5 、 Figure 6 and Figure 7 A plurality of circumferentially evenly arranged U-shaped rods 212 are fixedly installed on the left end of the outer side of the plug-in sleeve 21. Under the action of the shock-absorbing group 51, the snap plate 52 and the U-shaped rod 212 cooperate to achieve circumferential locking and radial elastic buffering between the fixed cylinder 11 and the plug-in sleeve 21. At the same time, the two locking blocks 53 on the same snap plate 52 are respectively clamped on the left and right ends of the corresponding U-shaped rod 212, realizing secondary axial locking of the fixed cylinder 11 and the plug-in sleeve 21, and ensuring the stable implementation of radial elastic buffering.

[0037] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 6 The connecting group 31 includes a connecting sleeve 311 that is slidably mounted on the outside of the fixed cylinder 11 through multiple sliding blocks. A plurality of arc grooves evenly arranged in the circumference are opened on the outside of the connecting sleeve 311. An arc slider 313 is slidably installed in the arc groove through an arc spring 312. The outer side of the arc slider 313 is fixedly connected to the inner wall of the rotating ring 32.

[0038] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7, the locking unit 3 is used to axially lock the fixed cylinder 11 and the plug-in sleeve 21, the vibration reduction unit 5 is used to apply radial elastic buffering between the fixed cylinder 11 and the plug-in sleeve 21, and the vibration reduction unit 5 is also used to circumferentially lock the fixed cylinder 11 and the plug-in sleeve 21; specifically, initially, the rotating ring 32 is located at the left extreme position relative to the fixed cylinder 11, before the plug connector 12 is inserted into the plug-in sleeve 21, first align the multiple snap plates 52 and the multiple U-shaped rods 212 one by one, and then the operator rotates the rotating ring 32, and the rotating ring 32 drives the arc-shaped slider 313 in the arc groove The arc spring 312 slides inward and compresses the arc spring 312, so that the rotating ring 32 drives the multiple locking rods 33 to rotate and aligns the left ends of the transverse sections of the multiple locking grooves 211 of the locking rods 33 one by one. Then the plug connector 12 is inserted into the plug-in sleeve 21. At this time, the snap plate 52 is inserted into the U-shaped structure corresponding to the U-shaped rod 212, and under the action of the shock-absorbing group 51, the snap plate 52 elastically clamps the inner wall of the U-shaped rod 212, so that the U-shaped rod 212 and the snap plate 52 cooperate to achieve circumferential position locking of the fixed cylinder 11 and the plug-in sleeve 21, preventing the fixed cylinder 11 and the plug-in sleeve 21 from rotating relative to each other.

[0039] When the locking rod 33 is in the locked position, the locking rod 33 is rotated to the locked position, and the locking rod 33 is rotated to the locked position in the locked position. The locking rod 33 is rotated to the locked position in the locked position. The locking rod 33 cooperates with the locked position to lock the fixed cylinder 11 and the inserted sleeve 21. The fixing cylinder 11 and the plug-in sleeve 21 move relative to each other in the left and right directions, and then realize double locking of the fixing cylinder 11 and the plug-in sleeve 21 through circumferential position locking and axial position locking, thereby increasing the stability of the male plug 1 and the female plug when connected. When the fixing cylinder 11 or the plug-in sleeve 21 produces continuous vibration under the influence of external wind force, equipment operation and other factors, under the action of the shock absorbing group 51, the snap plate 52 and the U-shaped rod 212 cooperate to apply radial elastic buffering between the fixing cylinder 11 and the plug-in sleeve 21, thereby reducing the relative vibration between the fixing cylinder 11 and the plug-in sleeve 21, and thereby reducing the impact of continuous vibration on the plug-in connection of the male plug 1 and the female plug, ensuring that the male plug 1 and the female plug are tightly connected, and ensuring that the photovoltaic system continues to generate electricity.

[0040] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 and Figure 7The shock-absorbing group 51 includes a fixed ring 511 fixedly mounted on the left end of the outer side of the fixed cylinder 11. A plurality of circumferentially evenly arranged sliding grooves are opened at the right end of the fixed ring 511. The snap plate 52 is radially slidably installed in the corresponding sliding groove. A synchronous slider 512 is slidably installed in the sliding groove, and the synchronous slider 512 is located on the side of the corresponding snap plate 52 close to the middle of the fixed ring 511. A shock-absorbing spring 513 is connected between the synchronous slider 512 and the corresponding snap plate 52.

[0041] See Figure 3 and Figure 4 A matching rod 514 is fixedly installed on the right end of the synchronous slider 512, and an inclined matching groove is opened at the position corresponding to the matching rod 514 on the left end of the rotating ring 32, and the matching rod 514 is slidably installed in the corresponding matching groove.

[0042] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 and Figure 7The shock-absorbing group 51 is used to perform radial elastic buffering and circumferential locking between the fixed cylinder 11 and the plug-in sleeve 21 through the snap plate 52; specifically, when the operator rotates the rotating ring 32, under the action of the inclined matching groove and the matching rod 514, the matching rod 514 drives the multiple synchronous sliders 512 to move in the direction of approaching each other. Since the shock-absorbing spring 513 is in a state of no deformation at this time, and the snap plate 52 can slide in the slide groove, the synchronous slider 512 drives the multiple snap plates 52 to move toward each other through the shock-absorbing spring 513. When the plug connector 12 and the plug sleeve 21 are connected, the rotating ring 32 rotates to the initial position, and the matching groove and the matching rod 514 cooperate to drive the multiple synchronous sliders 512 to move away from each other to the initial position. The synchronous slider 512 drives the multiple snap plates 52 to move away from each other through the shock-absorbing spring 513. At this time, the end of the snap plate 52 is inserted into the corresponding U-shaped rod 212, and under the action of the shock-absorbing spring 513, the snap plate 52 is locked. The buckle plate 52 elastically presses against the inner wall of the U-shaped rod 212. When the fixed cylinder 11 or the plug sleeve 21 generates continuous vibration due to external wind force, equipment operation and other factors, the buckle plate 52 always presses against the inner wall of the U-shaped rod 212 under the action of the shock-absorbing spring 513, and cooperates with the U-shaped rod 212 to apply radial elastic buffering between the fixed cylinder 11 and the plug sleeve 21, thereby reducing the relative vibration between the fixed cylinder 11 and the plug sleeve 21, and thus reducing the influence of continuous vibration on the plugging point of the male plug 1 and the female plug. The buckle plate 52 elastically presses against the U-shaped rod 212. The two locking blocks 53 on the snap plate 52 can be clamped on the left and right ends of the corresponding U-shaped rod 212 at the same time, so that the two locking blocks 53 and the corresponding U-shaped rod 212 cooperate to further implement axial position locking of the fixed cylinder 11 and the plug-in sleeve 21, thereby realizing secondary axial locking of the fixed cylinder 11 and the plug-in sleeve 21, further increasing the stability of the connection between the male plug 1 and the female plug, and also ensuring the axial position stability of the snap plate 52 and the U-shaped rod 212, thereby ensuring the stability of the radial elastic buffering implementation.

[0043] See Figure 1 、 Figure 2 and Figure 6 The double-end sealing unit 4 includes two sealing rings 42 arranged on the left and right outside the plug connector 12 through an expansion group 41. The expansion group 41 is used to drive the two sealing rings 42 to expand radially and press against the inner wall of the plug sleeve 21.

[0044] The double-end sealing unit 4 is used to seal the left and right ends between the plug-in connector 12 and the plug-in sleeve 21; specifically, when the plug-in connector 12 and the plug-in sleeve 21 are plugged together, there is a certain gap between the sealing ring 42 and the inner wall of the plug-in sleeve 21, so that the plug-in connector 12 can be smoothly inserted into the plug-in sleeve 21. After the plug-in connector 12 and the plug-in sleeve 21 are plugged in, the expansion group 41 can drive the two sealing rings 42 to expand radially, so that the two sealing rings 42 can be pressed against the inner wall of the plug-in sleeve 21. The two sealing rings 42 seal the left and right ends between the plug-in connector 12 and the plug-in sleeve 21, thereby increasing the sealing effect of the plug-in sleeve 21 and preventing dust or water from penetrating into the two inner core terminals 9.

[0045] See Figure 2 、 Figure 6 and Figure 8 The expansion group 41 includes an expansion ring 411 fixedly sleeved on the outside of the plug connector 12 and located on the right side of the sealing ring 42. The left end of the outer side of the expansion ring 411 is set as a bevel, and the bevel of the expansion ring 411 is in contact with the corresponding sealing ring 42. A limit ring 412 is fixedly sleeved on the right end of the outer side of the expansion ring 411; the expansion group 41 also includes a pushing ring 413 in contact with the left side of the sealing ring 42, and the pushing ring 413 is slidably sleeved on the outside of the plug connector 12; wherein, the sealing ring 42 is made of high-temperature resistant and corrosion-resistant rubber material.

[0046] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 and Figure 8 An L-shaped pushing rod 314 is fixedly installed on the opposite sides of multiple sliding blocks, and the pushing rod 314 is connected to the fixed cylinder 11 for sliding left and right. The right end of the horizontal section of the pushing rod 314 slides left and right through the right end of the fixed cylinder 11 and contacts the left end of the pushing ring 413 on the left. A synchronization rod 414 is fixedly installed between the two pushing rings 413, and the synchronization rod 414 is connected to the left expansion ring 411 for sliding left and right.

[0047] The expansion group 41 is used to drive the two sealing rings 42 to expand radially. Specifically, when the plug connector 12 and the plug-in sleeve 21 are plugged in, the operator moves the rotating ring 32 to the right to the right limit position. The rotating ring 32 drives the pushing rod 314 to move to the right through the connecting sleeve 311 and the sliding block. The pushing rod 314 pushes the pushing ring 413 on the left. Under the action of the synchronization rod 414, the two pushing rings 413 move to the right synchronously, and the pushing ring 413 pushes the corresponding sealing ring 42 to the right. Because the sealing ring 42 is made of elastic rubber, the inclined surface of the expansion ring 411 causes the sealing ring 42 to expand radially, pressing the sealing ring 42 against the inner wall of the plug sleeve 21. When the pushing ring 413 moves to the right limit position, the pushing ring 413 and the corresponding limiting ring 412 engage and clamp on the left and right sides of the corresponding sealing ring 42, thereby fixing the sealing ring 42 and ensuring that the sealing ring 42 provides a stable seal between the plug connector 12 and the plug sleeve 21. It should be noted that when the rotating ring 32 moves to the right limit position, the engaging rod 514 remains in the corresponding engaging groove.

[0048] See Figure 1 、 Figure 2 、 Figure 3 and Figure 5 The heat dissipation cavity group 6 includes a plurality of heat dissipation holes 61 arranged evenly in the circumferential direction and opened on the outside of the insertion sleeve 21, and the inner walls of the heat dissipation holes 61 are all set as inclined surfaces; specifically, as Figure 5 As shown, the heat dissipation hole 61 port gradually retracts from the outside to the inside; the heat dissipation cavity group 6 also includes a plurality of spiral guide grooves 62 arranged evenly in the circumference on the outside of the plug connector 12, and the rotation direction of the spiral guide grooves 62 is consistent with the inclination direction of the heat dissipation hole 61.

[0049] The heat dissipation cavity group 6 is used to achieve effective and rapid dissipation of heat at the connection point between the plug connector 12 and the plug sleeve 21; specifically, the multiple spiral guide grooves 62 on the outside of the plug connector 12 increase the contact area between the plug connector 12 and the air. When the external environment is a windy environment, wind can enter between the plug connector 12 and the plug sleeve 21 through the heat dissipation holes 61, but under the sealing of the sealing rings 42 on the left and right sides, wind will not enter the plug connector 12 from the left and right sides; because the heat dissipation holes 61 are set as an inclined structure, and the rotation direction of the spiral guide grooves 62 is consistent with the inclination direction of the heat dissipation holes 61, the wind can flow along the spiral guide grooves 62, and because the heat dissipation holes 61 are evenly arranged circumferentially, the wind can go out from the heat dissipation holes 61 on the other side and take away the heat at the connection point between the plug connector 12 and the plug sleeve 21, thereby allowing the heat at the connection point between the plug connector 12 and the plug sleeve 21 to be quickly dissipated.

[0050] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0051] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0052] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, integral or sliding connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0053] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A photovoltaic connector, comprising a male plug and a female plug located to the right of the male plug, wherein the male plug comprises a fixing cylinder and a plug connector, and the female plug comprises an inserting sleeve, characterized in that: The fixing cylinder is provided with a locking unit and a vibration reduction unit, and the plug connector is provided with a double-end sealing unit; The locking unit includes a rotating ring arranged at the right end of the outer side of the fixed cylinder through a connecting group, a plurality of circumferentially evenly arranged locking rods are fixedly installed at the right end of the inner side of the rotating ring, and a plurality of circumferentially evenly arranged L-shaped locking grooves are opened at the left end of the outer side of the plug-in sleeve. The locking rods and the locking grooves cooperate to axially lock the plugged fixed cylinder and the plug-in sleeve. The vibration reduction unit includes a shock-absorbing group arranged between the rotating ring and the fixed cylinder, and a plurality of snap plates arranged evenly in the circumferential direction are provided on the shock-absorbing group. Two left-right arranged locking blocks are fixedly installed on the right ends of the opposite sides of the plurality of snap plates. A plurality of U-shaped rods evenly arranged circumferentially are fixedly installed on the left end of the outer side of the plug-in sleeve. Under the action of the shock-absorbing group, the snap plate and the U-shaped rod cooperate to implement circumferential locking and radial elastic buffering of the plug-in fixed cylinder and plug-in sleeve. At the same time, the U-shaped rod cooperates with the corresponding two locking blocks to implement secondary axial locking of the plug-in fixed cylinder and plug-in sleeve, and ensure the stable implementation of radial elastic buffering.

2. A photovoltaic connector according to claim 1, characterized in that: The left end of the transverse section of the locking groove passes through the left end of the inserting sleeve, and the locking rod and the arc section of the locking groove cooperate to implement axial locking of the plugged fixed cylinder and the inserting sleeve.

3. A photovoltaic connector according to claim 1, characterized in that: The connecting group includes a connecting sleeve that is slidably mounted on the outside of the fixed cylinder through multiple sliding blocks. A plurality of arc grooves evenly arranged circumferentially are opened on the outside of the connecting sleeve. An arc slider is slidably installed in the arc groove through an arc spring. The outer side of the arc slider is fixedly connected to the inner wall of the rotating ring.

4. A photovoltaic connector according to claim 3, characterized in that: The double-end sealing unit includes two left and right sealing rings arranged on the outside of the plug connector through an expansion group. The expansion group is used to drive the two sealing rings to expand radially and press against the inner wall of the plug sleeve.

5. A photovoltaic connector according to claim 4, characterized in that: The expansion group includes an expansion ring fixedly sleeved on the outside of the plug connector and located on the right side of the sealing ring. The left end of the outer side of the expansion ring is set as an inclined surface, and the inclined surface of the expansion ring is set in contact with the corresponding sealing ring. A limiting ring is fixedly sleeved on the right end of the outer side of the expansion ring. The expansion group also includes a pushing ring which is contact-arranged on the left side of the sealing ring, and the pushing ring is slidably sleeved on the outer side of the plug connector.

6. A photovoltaic connector according to claim 5, characterized in that: L-shaped pushing rods are fixedly installed on the opposite sides of multiple sliding blocks, and the pushing rods are connected to the fixed cylinder for sliding left and right. The right end of the horizontal section of the pushing rod slides left and right through the right end of the fixed cylinder and contacts the left end of the pushing ring on the left. A synchronization rod is fixedly installed between the two pushing rings, and the synchronization rod is connected to the expansion ring on the left for sliding left and right.

7. The photovoltaic connector according to claim 1, characterized in that: The shock-absorbing group includes a fixed ring fixedly mounted on the left end of the outer side of the fixed cylinder, and a plurality of circumferentially evenly arranged sliding grooves are opened at the right end of the fixed ring. The snap plate is radially slidably installed in the corresponding sliding groove, and a synchronous slider is slidably installed in the sliding groove. The synchronous slider is located on the side of the corresponding snap plate close to the middle of the fixed ring, and a shock-absorbing spring is connected between the synchronous slider and the corresponding snap plate.

8. A photovoltaic connector according to claim 7, characterized in that: A matching rod is fixedly installed on the right end of the synchronous slider, and an inclined matching groove is opened at the position corresponding to the matching rod on the left end of the rotating ring, and the matching rod is slidably installed in the corresponding matching groove.

9. The photovoltaic connector according to claim 4, characterized in that: A heat dissipation cavity group is provided between the plug connector and the plug sleeve and between the two sealing rings. The heat dissipation cavity group is used to dissipate heat at the plug connection point between the plug connector and the plug sleeve.

10. A photovoltaic connector according to claim 9, characterized in that: The heat dissipation cavity group includes a plurality of heat dissipation holes that are evenly arranged in the circumferential direction and are opened on the outside of the insertion sleeve, and the heat dissipation holes are arranged in an inclined structure; The heat dissipation cavity group further comprises a plurality of spiral guide grooves which are arranged evenly in the circumferential direction on the outer side of the plug connector, and the rotation direction of the spiral guide grooves is consistent with the inclination direction of the heat dissipation holes.

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