A double-sealed and waterproof board-to-line photovoltaic connector

Abstract

The present invention relates to the technical field of photovoltaic connectors, and specifically to a double-sealed and waterproof board-end to line-end photovoltaic connector, the photovoltaic connector comprising a male plug, a female plug, a board-end terminal, a line-end terminal and a wire crimping device, when the connector is in use, a one-time locking structure of the board-end terminal locks the board-end terminal and a PCB board, the board-end terminal is inserted into a through groove of the male plug, after the board-end is installed, the line-end terminal is installed in the wire crimping device, the insulation of the wire is stripped off with a wire stripper, the wire is inserted into the wire crimping device, the wire is fixed by the wire crimping device, after the line-end is installed, the line-end terminal is inserted into a female plug, the board-end terminal is inserted into the line-end terminal, the male plug and the female plug are locked, when the connector is removed, an unlocking tool is used to loosen the male plug and the female plug, the wire crimping device loosens the wire, the line-end terminal is pulled out, the PCB board and the board-end terminal are unlocked with an unlocking tool, and the board-end terminal is pulled out.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic connectors, and in particular to a double-sealed and waterproof board-end to line-end photovoltaic connector. Background Art

[0002] Photovoltaic, or photovoltaic power generation system, is a power generation system that uses the photovoltaic effect of semiconductor materials to convert solar radiation energy into electrical energy. The energy of the photovoltaic power generation system comes from inexhaustible solar energy. It is a clean, safe and renewable energy source. The photovoltaic power generation process does not pollute the environment or damage the ecology. Photovoltaic connectors are indispensable components in photovoltaic power generation systems. Photovoltaic connectors are a type of equipment used to establish safe and reliable electrical connections between photovoltaic panels. They also connect photovoltaic panels and other components of the photovoltaic system, such as inverters, charge controllers and batteries. Photovoltaic connectors ensure efficient energy transmission and minimize any power loss in the system. Current technology has defects: most photovoltaic connectors on the market are designed with a single PIN and wire-to-wire end. Although there are multi-PIN photovoltaic connectors, there are no products with 3PIN plastics as one and board-to-wire end. The existing products have poor waterproofing effects, which will shorten their service life. When the wire end terminals of existing products are connected to the wires, most of them are pressed into the ports with crimping pliers. The ports are designed for one-time use and cannot be removed after being pressed in. If the direction of the port is not correct when the crimping pliers is used, the port will be damaged and cannot be used, which will increase costs and reduce production efficiency. Summary of the invention

[0003] The object of the present invention is to provide a double-sealed and waterproof board-end to line-end photovoltaic connector to solve the problems raised in the above-mentioned background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: the photovoltaic connector includes a male plug and a female plug, the male plug and the female plug cooperate with each other, a male locking block is arranged on the shell of the male plug, a board end terminal is installed in the through groove of the male plug, a primary locking structure is arranged at one end of the board end terminal, a limiting block is arranged on the surface of the board end terminal, a wire end terminal is installed in the groove of the female plug, the board end terminal and the wire end terminal cooperate with each other, a wire crimping device is slidably connected in the female plug, and one end of the wire end terminal is installed in the wire crimping device. When the connector is in use, use the one-time locking structure of the board-end terminal to lock the board-end terminal and the PCB board, insert the board-end terminal into the through slot of the male plug, after the board-end is installed, install the wire-end terminal in the wire-crimping device, use wire strippers to strip the insulation of the wire, insert the wire into the wire-crimping device, and the wire-crimping device fixes the wire. After the wire-end is installed, insert the wire-end terminal into the female plug, and insert the board-end terminal into the wire-end terminal. The male plug and the female plug will be locked. When removing the connector, use an unlocking tool to loosen the male plug and the female plug, then the wire-crimping device loosens the wire, pulls out the wire-end terminal, uses an unlocking tool to unlock the PCB board and the board-end terminal, and pulls out the board-end terminal.

[0005] The female plug includes a shell and a mounting plate. The mounting plate is connected with a terminal shell. The wire end terminal is installed in the terminal shell. One end of the terminal shell is provided with an anti-fool structure. One end of the mounting plate is connected with a partition. The wire pressing device is slidably connected to the partition. One side of the mounting plate is connected with an arc plate. One end of the arc plate is connected with a female locking block. The male locking block and the female locking block cooperate with each other. One end of the mounting plate is connected with a barb block. The shell and the barb block cooperate with each other. Both sides of the shell are provided with spring pieces. The anti-fool structure can only be inserted in one direction when the male plug and the female plug are plugged in, so as to avoid damage to the product. The male locking block and the female locking block are locked together and can only be pulled out with an unlocking tool to prevent the male plug and the female plug from falling off. The barb block plays a role of stopping the female plug from falling off when the female plug is assembled. The spring piece can prevent the shell from being stuck when the male plug and the female plug are plugged in, thereby improving the service life.

[0006] The wire end terminal comprises a wire end housing, the wire end housing is installed in the terminal housing, a limit block 2 is arranged on the surface of the wire end housing, a crown spring is arranged inside the wire end housing, the plate end terminal cooperates with the crown spring, an external thread is arranged on the surface of the wire end housing, the wire end housing is installed in the wire pressing device, and a semicircular plate is connected to one end of the wire end housing. When the plate end terminal is inserted into the wire end terminal, the crown spring can make the contact more stable and the service life longer.

[0007] The wire pressing device includes a wire pressing housing, a locking groove is provided on the wire pressing housing, a mounting cylinder and a telescopic cylinder are connected to the inside of the wire pressing housing, the wire end housing is installed in the mounting cylinder, an internal thread is provided in the mounting cylinder, a pressing groove is provided on the mounting cylinder, the partition slides in the telescopic cylinder, a cylinder is installed in the wire pressing housing, a telescopic groove is provided in the cylinder, a pressing device is slidably connected in the telescopic groove, the pressing device slides on the telescopic cylinder, the pressing device slides in the pressing groove, a first spring is installed in the telescopic groove, the pressing device is installed on the axis of the first spring, one end of the first spring is connected to the bottom of the telescopic groove, and the other end of the first spring is connected to the pressing device, a rotating shaft is connected to the inside of the wire pressing housing, a self-locking device is rotatably connected to the rotating shaft, the self-locking device is engaged with the pressing device, and the self-locking device slides in the locking groove of the wire pressing housing. When installing the wire end, the wire end terminal is threadedly connected to the installation barrel. After the wire end terminal is installed, the stripped wire is inserted into the installation barrel, the wire is pressed against the semicircular plate by the pressing device, the self-locking device locks the pressing device, and then the wire end terminal is inserted into the female plug. When removing the wire end, the self-locking device unlocks the pressing device, loosens the wire, and removes the wire end terminal.

[0008] The pressing device includes a pressing block, which is mounted on the axis of the first spring, and slides in the telescopic groove. The surface of the pressing block is connected to a limiting plate, one end of the first spring is connected to the limiting plate, a connecting plate is connected below the pressing block, the connecting plate slides on the telescopic cylinder, a pressing plate is connected below the connecting plate, the pressing plate slides in the pressing groove, a rack is connected to one side of the connecting plate, and the rack is engaged with the self-locking device. When the wire is pressed, the pressing block is pressed, the pressing block moves downward, the first spring contracts, the pressing block drives the pressing plate to press the wire on the semicircular plate, and the self-locking device locks the pressing device at the same time. When the wire is removed, the self-locking device unlocks the pressing device, the first spring stretches, drives the limiting plate to move upward, the limiting plate drives the pressing block to move upward, and the pressing block drives the pressing plate to move upward to release the wire.

[0009] The self-locking device includes a gear and a pawl. The gear rotates on a rotating shaft, the gear meshes with a rack, a ratchet is connected to one side of the gear, the pawl meshes with the ratchet, one end of the pawl is slidably connected to a slide rail, the slide rail is connected to the inside of a wire pressing housing, a second spring is installed inside the slide rail, a blocking block is connected inside the slide rail, a slider is connected to one side of the pawl, the second spring passes through the blocking block and is connected to one side of the slider, the slider slides in a locking groove, one end of the slider is connected to a pushing block, the pushing block slides on the outer surface of the wire pressing housing, a sealing plate is connected to the surface of the slider, and the sealing plate slides on the inner surface of the wire pressing housing. When the wire is compressed, the pressing block moves downward, driving the rack to move downward, the rack drives the gear to rotate, the gear drives the ratchet to rotate, the ratchet drives the pawl to slide on the slide rail, the pawl slides in the direction away from the second spring, the second spring extends, when the pressing block stops sliding, the second spring contracts and drives the pawl back to the starting position, the pawl rests on the ratchet, locking the pressing device, when the wire is removed, the pushing block is pushed to slide in the locking groove, the second spring extends, the pawl leaves the ratchet, the first spring extends, the first spring drives the limiting plate to move upward, the limiting plate drives the pressing block to move upward, the pressing block drives the pressing plate to move upward, the wire is released, the pushing block is released, the second spring contracts, and the second spring drives the pawl back to the starting position.

[0010] The installation plate is provided with a sealing ring 1 and a sealing ring 2, so that the product has a good waterproof effect.

[0011] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0012] The present invention is a product in which 3PIN feet and plastic are integrated, and the board end is aligned with the wire end, and the structure is more compact and the sealing is better; the present invention designs two sealing rings to form a double-sealed structure, so that the waterproof effect is better; when the wire end terminal is installed, the wire is pressed onto the wire end terminal with a pressing plate, and the wire can be removed by simply pushing the self-locking device to unlock, and the disassembly is convenient, and the damaged wire can be replaced in time, and there is no need to replace the wire end terminal and the wire at the same time, thereby reducing the cost; when the present invention is in use, three wires can be pressed onto the wire end terminal at the same time, and there is no need to use wire crimping pliers to press them in sequence, so the use is convenient, the work efficiency is improved, and the labor cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1is a stereogram of a photovoltaic connector of the present invention;

[0015] Figure 2 is an exploded view of the photovoltaic connector of the present invention;

[0016] Figure 3 is a front view of the female plug of the present invention;

[0017] Figure 4 The present invention Figure 3 Sectional view in the AA direction;

[0018] Figure 5 is a schematic diagram of the male plug and the female plug of the present invention cooperating with each other;

[0019] Figure 6 is a schematic diagram of the interior of the female plug of the present invention;

[0020] Figure 7 is a cross-sectional view of a wire end terminal of the present invention;

[0021] Figure 8 is an internal schematic diagram of the wire pressing device of the present invention;

[0022] Fig. 9 is a three-dimensional diagram of a pressing device of the present invention;

[0023] Fig.10 is a perspective view of the self-locking device of the present invention;

[0024] Fig.11 The present invention Fig.10 A partial enlarged view of area B.

[0025] In the figure: 1. male plug; 2. female plug; 21. housing; 211. spring; 22. terminal housing; 23. barb block; 24. mounting plate; 25. arc plate; 26. sealing ring 1; 27. sealing ring 2; 28. partition; 29. ​​foolproof structure; 3. plate terminal; 4. wire terminal; 41. wire terminal housing; 42. crown spring; 43. external thread; 44. semicircular plate; 5. wire pressing device; 51. wire pressing housing; 52. cylinder; 53. Pressing device; 531. Connecting plate; 532. Pressing block; 533. Limiting plate; 534. Rack; 535. Pressing plate; 54. Self-locking device; 541. Gear; 542. Ratchet; 543. Paw; 544. Slide rail; 545. Second spring; 546. Sealing plate; 547. Pushing block; 548. Sliding block; 549. Stopping block; 55. Telescopic cylinder; 56. First spring; 57. Mounting cylinder; 58. Internal thread. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] See also Figure 1-Figure 11 The present invention provides a technical solution: a photovoltaic connector includes a male plug 1 and a female plug 2, the male plug 1 and the female plug 2 cooperate with each other, a male locking block is arranged on the shell of the male plug 1, a board terminal 3 is installed in the through groove of the male plug 1, one end of the board terminal 3 is provided with a primary locking structure, a limiting block 1 is arranged on the surface of the board terminal 3, a wire end terminal 4 is installed in the groove of the female plug 2, the board end terminal 3 and the wire end terminal 4 cooperate with each other, a wire pressing device 5 is slidably connected in the female plug 2, and one end of the wire end terminal 4 is installed in the wire pressing device 5. When the connector is in use, the board terminal 3 and the PCB board are locked with the one-time locking structure of the board terminal 3, and the board terminal 3 is inserted into the through groove of the male plug 1. After the board end is installed, the wire end terminal 4 is installed in the wire crimping device 5, and the insulation of the wire is stripped off with a wire stripper, and the wire is inserted into the wire crimping device 5, and the wire crimping device 5 fixes the wire. After the wire end is installed, the wire end terminal 4 is inserted into the female plug 2, and the board terminal 3 is inserted into the wire end terminal 4, and the male plug 1 and the female plug 2 will be locked. When removing the connector, use an unlocking tool to loosen the male plug 1 and the female plug 2, and then the wire crimping device 5 loosens the wire, pulls out the wire end terminal 4, and then separates the wire end terminal 4 from the wire crimping device 5, and uses an unlocking tool to unlock the PCB board and the board terminal 3, and pulls out the board terminal 3.

[0028] The female plug 2 includes a shell 21 and a mounting plate 24. A terminal shell 22 is connected to the mounting plate 24. The wire end terminal 4 is installed in the terminal shell 22. An anti-fool structure 29 is provided at one end of the terminal shell 22. A partition 28 is connected to one end of the mounting plate 24. The wire pressing device 5 is slidably connected to the partition 28. An arc plate 25 is connected to one side of the mounting plate 24. A sealing ring 1 26 and a sealing ring 27 are installed on the mounting plate 24. A female locking block is connected to one end of the arc plate 25. The male locking block and the female locking block cooperate with each other. A barb block 23 is connected to one end of the mounting plate 24. The shell 21 cooperates with the barb block 23. Shrapnel 211 is provided on both sides of the shell 21. The foolproof structure 29 can prevent the male plug 1 and the female plug 2 from being plugged in together in only one direction to avoid damage to the product. The male locking block and the female locking block are locked together and can only be unplugged with an unlocking tool to prevent the male plug 1 and the female plug 2 from falling off. The barb block 23 plays a role of stopping the female plug 2 from retreating when assembling and prevents the shell 21 from falling off. The spring piece 211 can prevent the shell from being blocked when the male plug 1 and the female plug 2 are plugged in, thereby increasing the service life.

[0029] The wire end terminal 4 includes a wire end housing 41, which is installed in the terminal housing 22. A limit block 2 is provided on the surface of the wire end housing 41. A crown spring 42 is installed inside the wire end housing 41. The board terminal 3 and the crown spring 42 cooperate with each other. An external thread 43 is provided on the surface of the wire end housing 41. The wire end housing 41 is installed in the wire crimping device 5. One end of the wire end housing 41 is connected to a semicircular plate 44. When the board terminal 3 is inserted into the wire end terminal 4, the crown spring 42 can make the contact more stable and the service life longer.

[0030] The wire pressing device 5 comprises a wire pressing housing 51, on which a locking groove is arranged, a mounting cylinder 57 and a telescopic cylinder 55 are connected inside the wire pressing housing 51, the wire end housing 41 is mounted in the mounting cylinder 57, an internal thread 58 is arranged in the mounting cylinder 57, a pressing groove is arranged on the mounting cylinder 57, the partition 28 slides in the telescopic cylinder 55, a cylinder 52 is mounted in the wire pressing housing 51, a telescopic groove is arranged in the cylinder 52, a pressing device 53 is slidably connected in the telescopic groove, and the pressing device 53 is pressed in the telescopic groove. The pressing device 53 slides on the shrinking tube 55, and the pressing device 53 slides in the pressing groove. A first spring 56 is installed in the expansion groove. The pressing device 53 is installed on the axis of the first spring 56. One end of the first spring 56 is connected to the bottom of the expansion groove, and the other end of the first spring 56 is connected to the pressing device 53. The inside of the wire pressing housing 51 is connected to a rotating shaft, and a self-locking device 54 is rotatably connected to the rotating shaft. The self-locking device 54 is engaged with the pressing device 53, and the self-locking device 54 slides in the locking groove of the wire pressing housing 51. When installing the wire end, the wire end terminal 4 is threadedly connected to the installation tube 57. After the installation of the wire end terminal 4 is completed, the stripped wire is inserted into the installation tube 57, and the wire is pressed against the semicircular plate 44 by the pressing device 53. The self-locking device 54 locks the pressing device 53, and then the wire end terminal 4 is inserted into the female plug 2. When the wire end is removed, the self-locking device 54 unlocks the pressing device 53, the wire is loosened, and the wire end terminal 4 is removed.

[0031] The pressing device 53 includes a pressing block 532, which is installed on the axis of the first spring 56. The pressing block 532 slides in the telescopic groove. The surface of the pressing block 532 is connected to the limiting plate 533. One end of the first spring 56 is connected to the limiting plate 533. A connecting plate 531 is connected below the pressing block 532. The connecting plate 531 slides on the telescopic cylinder 55. A pressing plate 535 is connected below the connecting plate 531. The pressing plate 535 slides in the pressing groove. A rack 534 is connected to one side of the connecting plate 531. The rack 534 engages with the self-locking device 54. When the wire is compressed, the pressing block 532 is pressed, the pressing block 532 moves downward, the first spring 56 contracts, the pressing block 532 drives the pressing plate 535 to press the wire onto the semicircular plate 44, and the self-locking device 54 locks the pressing device 53 at the same time. When the wire is removed, the self-locking device 54 unlocks the pressing device 53, the first spring 56 extends, drives the limiting plate 533 to move upward, the limiting plate 533 drives the pressing block 532 to move upward, and the pressing block 532 drives the pressing plate 535 to move upward to release the wire.

[0032] The self-locking device 54 includes a gear 541 and a pawl 543. The gear 541 rotates on the rotating shaft, the gear 541 meshes with the rack 534, a ratchet 542 is connected to one side of the gear 541, the pawl 543 meshes with the ratchet 542, one end of the pawl 543 is slidably connected to a slide rail 544, the slide rail 544 is connected to the inside of the wire pressing housing 51, a second spring 545 is installed inside the slide rail 544, a blocking block 549 is connected to the inside of the slide rail 544, a slider 548 is connected to one side of the pawl 543, the second spring 545 passes through the blocking block 549 and is connected to one side of the slider 548, the slider 548 slides in the locking groove, a push block 547 is connected to one end of the slider 548, the push block 547 slides on the outer surface of the wire pressing housing 51, a sealing plate 546 is connected to the surface of the slider 548, and the sealing plate 546 slides on the inner surface of the wire pressing housing 51. When the wire is compressed, the pressing block 532 moves downward, driving the rack 534 to move downward, the rack 534 drives the gear 541 to rotate, the gear 541 drives the ratchet 542 to rotate, the ratchet 542 drives the pawl 543 to slide on the slide rail 544, the pawl 543 slides in the direction away from the second spring 545, and the second spring 545 extends. When the pressing block 532 stops sliding, the second spring 545 contracts and drives the pawl 543 back to the starting position, and the pawl 543 abuts against the ratchet 542, so that the pressing device 53 is locked.

[0033] When the wire is removed, the pushing block 547 is pushed to slide in the locking groove, the second spring 545 stretches, the pawl 543 leaves the ratchet 542, the first spring 56 stretches, the first spring 56 drives the limiting plate 533 to move upward, the limiting plate 533 drives the pressing block 532 to move upward, the pressing block 532 drives the pressing plate 535 to move upward, the wire is released, the pushing block 547 is released, the second spring 545 contracts, and the second spring 545 drives the pawl 543 back to the starting position.

[0034] Working principle of the present invention:

[0035] When the connector is in use, the operator uses the one-time locking structure of the board-end terminal 3 to lock the board-end terminal 3 and the PCB board, and inserts the board-end terminal 3 into the through groove of the male plug 1 until the limit block on the board-end terminal 3 reaches the specified position and makes a sound and stops. After the board end is installed, the operator threadably connects the line-end terminal 4 with the installation barrel 57. After the line-end terminal 4 is installed, the insulation skin of the wire is stripped off with a wire stripper, and the stripped wire is inserted into the installation barrel 57. The pressing block 532 is pressed. The pressing block 532 moves downward, the first spring 56 will shrink, and the pressing block 532 drives the pressure plate 535 to press the wire on the semicircular plate 44. When the pressing block 532 moves downward, the pressing block 532 drives the rack 534 to move downward. 34 drives gear 541 to rotate, gear 541 drives ratchet 542 to rotate, ratchet 542 drives pawl 543 to slide on slide rail 544, pawl 543 slides in the direction away from second spring 545, second spring 545 stretches, when pressure plate 535 presses the wire, pressing block 532 stops sliding, second spring 545 contracts and drives pawl 543 back to the starting position, pawl 543 abuts against ratchet 542, so that pressing device 53 is locked, after the installation of the wire end is completed, the operator inserts the wire end terminal 4 into the female plug 2, cooperates the male plug 1 and the female plug 2 with each other, inserts the board end terminal 3 into the wire end terminal 4, the male locking block on the male plug 1 and the female locking block on the female plug 2 will be locked, and the connector installation is completed.

[0036] When removing the connector, the operator uses an unlocking tool to loosen the male plug 1 and the female plug 2, and uses the unlocking tool to unlock the PCB board and the board terminal 3. The operator pulls out the board terminal 3. After the board terminal 3 is removed, the operator pulls out the line terminal 4 from the female plug 2, and then pushes the pushing block 547 to slide in the locking groove, the second spring 545 extends, and the pushing block 547 drives the pawl 543 to leave the ratchet 542. At this time, the first spring 56 extends, and the first spring 56 drives the limiting plate 533 to move upward, the limiting plate 533 drives the pressing block 532 to move upward, and the pressing block 532 drives the pressing plate 535 to move upward, and the pressing plate 535 releases the wire. After the operator removes the wire, he releases the pushing block 547, the second spring 545 contracts, and the second spring 545 drives the pawl 543 back to the starting position, and the operator removes the line terminal 4 from the mounting cylinder 57.

[0037] Although the embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, substitute and vary the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A double-sealed and waterproof board-to-line photovoltaic connector, characterized in that: The photovoltaic connector comprises a male plug and a female plug, the male plug and the female plug cooperate with each other, a male locking block is arranged on the shell of the male plug, a board terminal is installed in the through groove of the male plug, one end of the board terminal is arranged with a one-time locking structure, a limiting block 1 is arranged on the surface of the board terminal, a wire terminal is installed in the groove of the female plug, the board terminal and the wire terminal cooperate with each other, a wire pressing device is slidably connected in the female plug, and one end of the wire terminal is installed in the wire pressing device; The female plug comprises a shell and a mounting plate, wherein a terminal shell is connected inside the mounting plate, the wire end terminal is mounted in the terminal shell, one end of the terminal shell is provided with an anti-fool structure, one end of the mounting plate is connected with a partition, the wire pressing device is slidably connected to the partition, the other end of the mounting plate is connected with an arc plate, one end of the arc plate is connected with a female locking block, the male locking block and the female locking block cooperate with each other, one end of the mounting plate is connected with a barb block, the shell and the barb block cooperate with each other, and spring pieces are provided on both sides of the shell; The wire end terminal includes a wire end housing, the wire pressing device includes a wire pressing housing, a locking groove is provided on the wire pressing housing, a mounting tube and a telescopic tube are connected inside the wire pressing housing, the wire end housing is installed in the mounting tube, an internal thread is provided in the mounting tube, a pressing groove is provided on the mounting tube, the partition slides in the telescopic tube, a cylinder is installed in the wire pressing housing, a telescopic groove is provided in the cylinder, a pressing device is slidably connected in the telescopic groove, the pressing device slides on the telescopic cylinder, the pressing device slides in the pressing groove, a first spring is installed in the telescopic groove, the pressing device is installed on the axis of the first spring, one end of the first spring is connected to the bottom of the telescopic groove, and the other end of the first spring is connected to the pressing device, a rotating shaft is connected inside the wire pressing housing, a self-locking device is rotatably connected to the rotating shaft, the self-locking device is engaged with the pressing device, and the self-locking device slides in the locking groove of the wire pressing housing.

2. A double-sealed and waterproof board-end to line-end photovoltaic connector according to claim 1, characterized in that: The wire end housing is installed in the terminal housing, a limiting block 2 is arranged on the surface of the wire end housing, a crown spring is installed inside the wire end housing, the plate end terminal cooperates with the crown spring, an external thread is arranged on the surface of the wire end housing, the wire end housing is installed in the wire crimping device, and one end of the wire end housing is connected to a semicircular plate.

3. A double-sealed and waterproof board-end to line-end photovoltaic connector according to claim 2, characterized in that: The pressing device includes a pressing block, which is installed on the axis of the first spring. The pressing block slides in the telescopic groove. The surface of the pressing block is connected to a limiting plate. One end of the first spring is connected to the limiting plate. A connecting plate is connected below the pressing block. The connecting plate slides on the telescopic cylinder. A pressure plate is connected below the connecting plate. The pressure plate slides in the pressing groove. A rack is connected to one side of the connecting plate, and the rack is engaged with a self-locking device.

4. A double-sealed and waterproof board-end to line-end photovoltaic connector according to claim 3, characterized in that: The self-locking device includes a gear and a pawl. The gear rotates on a rotating shaft, the gear meshes with a rack, a ratchet is connected to one side of the gear, the pawl meshes with the ratchet, one end of the pawl is slidably connected to a slide rail, the slide rail is connected to the inside of a wire pressing housing, a second spring is installed inside the slide rail, a blocking block is connected inside the slide rail, a slider is connected to one side of the pawl, the second spring passes through the blocking block and is connected to one side of the slider, the slider slides in a locking groove, one end of the slider is connected to a pushing block, the pushing block slides on the outer surface of the wire pressing housing, a sealing plate is connected to the surface of the slider, and the sealing plate slides on the inner surface of the wire pressing housing.

5. A double-sealed and waterproof board-end to line-end photovoltaic connector according to claim 4, characterized in that: The mounting plate is provided with a sealing ring 1 and a sealing ring 2.

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