Elbow photovoltaic connector structure

Abstract

The utility model discloses an elbow photovoltaic connector structure, and relates to the technical field of electrical equipment, the connector structure comprises an L-shaped plastic-coated part main body and a cable tail cover, one end of the plastic-coated part main body is provided with a plug end, the other end of the plastic-coated part main body is connected with the cable tail cover, and the cable tail cover is provided with a threading hole; the metal conductive part is injection-molded in the plastic-coated part main body, one end of the metal conductive part is electrically connected with the cable end part, and the other end of the metal conductive part is electrically connected with the equipment socket end; and the wiring terminal is arranged in the plastic-coated part main body, and a locking part for fixing a cable is arranged on the wiring terminal, so that the end part of the cable is reliably connected with the metal conductive part. The photovoltaic connector has the effect of facilitating wiring, and can connect the cable of the photovoltaic connector to the photovoltaic equipment at 90 degrees, so that the photovoltaic connector can adapt to the scene that the photovoltaic equipment is horizontally placed or stacked for use, and the external space of the photovoltaic equipment can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to an elbow photovoltaic connector structure. Background Art

[0002] A photovoltaic connector is a key part for connecting various components such as photovoltaic modules, busbar boxes, controllers, and inverters in a photovoltaic power generation system.

[0003] In related technologies, photovoltaic devices are usually used in wall-mounted scenarios, and the device-side socket is located at the bottom of the device. After the plug of the photovoltaic connector is docked with the device-side socket, the plug and the socket of the photovoltaic connector form an angle of 180°.

[0004] When the usage scenario of the photovoltaic device is a horizontal scenario or an energy storage stacked scenario, if the 180° photovoltaic connector plug structure is still used, the size of the plug part of the photovoltaic connector extends too far outside the device, seriously wasting the external space of the photovoltaic device, and the bending angle of the cable at the tail of the photovoltaic connector is too large, resulting in continuous stress on the plug of the photovoltaic connector and affecting the usage reliability of the photovoltaic device. Summary of the Utility Model

[0005] The utility model provides an elbow photovoltaic connector structure, which has the effect of facilitating wiring. After wiring, the angle between the photovoltaic connector and the photovoltaic device is 90°, so as to enable the photovoltaic connector to meet the usage scenarios of horizontal type or energy storage stacking type.

[0006] The utility model specifically adopts the following technical solutions:

[0007] An elbow photovoltaic connector structure includes:

[0008] A cable;

[0009] A connecting elbow, including a plastic-encapsulated main body and a cable end cover. The plastic-encapsulated main body is arranged in an L shape. One end of the plastic-encapsulated main body is set as a plug end for docking and cooperating with the device socket end. The plug end is a male plug or a female plug. The other end of the plastic-encapsulated main body is assembled and connected with the cable end cover. A wire passing hole for inserting the cable into the inside of the plastic-encapsulated main body is provided on the cable end cover;

[0010] A wiring terminal is arranged inside the plastic-encapsulated main body, and a locking member for fixing the cable core is provided on the wiring terminal;

[0011] A metal conductive part is injection-molded and connected inside the plastic-encapsulated main body. One end of the metal conductive part is electrically connected to the wiring terminal, and the other end of the metal conductive part is electrically connected to the device socket end.

[0012] Optionally, the metal conductive part comprises a first stamping part, a transition part, and a second stamping part which are connected in sequence, and a mounting groove is provided inside the first stamping part and / or the second stamping part;

[0013] When the plug end is a male plug end, the first stamping part and the second stamping part are both provided with mounting grooves, and the two mounting grooves are both provided with crown springs, one of the crown springs is plugged into the wiring terminal, and the other crown spring is plugged into the female end of the device socket;

[0014] When the plug end is a female plug end, a mounting groove is provided inside the first stamping part or the second stamping part, a crown spring is provided in the mounting groove, the wiring terminal is plugged into the crown spring, and the second stamping part or the first stamping part is plugged into the male end of the equipment socket.

[0015] Optionally, the straight lines where the central axes of the first stamping portion and the second stamping portion are located are perpendicular to each other.

[0016] Optionally, when the plug end is a female plug end, an injection hole is provided in the second stamping portion or the first stamping portion, so as to form an anti-finger touch structure by injection molding the second stamping portion or the first stamping portion of the female plug end.

[0017] Optionally, the cross-sectional area perpendicular to the groove depth direction of the injection hole is smaller than the cross-sectional area perpendicular to the groove depth direction of the mounting groove.

[0018] Optionally, the locking member is a spring sheet, the spring sheet comprises a first clamping portion, a connecting portion, and a pressing portion which are sequentially connected, and the connecting portion is rotatably connected to the wiring terminal;

[0019] Two side walls of the first clamping portion are respectively provided with two first clamping grooves, and the wiring terminal is provided with a first clamping block that is clamped and matched with the first clamping grooves;

[0020] The free end of the pressing portion and the free end of the first clamping portion are both extended in a direction toward the metal conductive member, and a wiring space for the cable to pass through is reserved between the bottom wall of the pressing portion and the inner bottom wall of the wiring terminal;

[0021] When the first clamping block is clamped in the first clamping groove, the pressing portion presses the cable against the inner bottom wall of the wiring terminal.

[0022] Optionally, a second clamping portion is formed by bending two side walls of the connecting portion, and two second clamping portions are rotatably connected to two side walls of the connecting terminal respectively;

[0023] The wiring terminal is provided with two opposite second clamping blocks, the first clamping block and the second clamping block are arranged opposite to each other along the threading direction of the cable, the side wall of the second clamping block is provided with a second clamping groove, and the side wall of the second clamping portion is provided with a third clamping block;

[0024] When the first clamping block is clamped in the first clamping groove, the third clamping block is clamped in the second clamping groove, and the clamping directions of the first clamping block and the third clamping block are opposite.

[0025] Optionally, an unlocking hole matched with a screwdriver is provided on the first clamping portion.

[0026] Optionally, a stop bar is provided on the inner bottom wall of the wiring space where the terminal is located, and the stop bar is used to abut against the bottom wall on one side of the free end of the pressing portion.

[0027] Optionally, two stop portions are formed by bending the two side walls of the terminal inward, and the stop portions are used to prevent the wire core of the cable from extending out of the wiring space.

[0028] Optionally, a holding member is detachably provided inside the plastic-encapsulated main body. A positioning groove for accommodating the terminal is provided on the holding member. A wire passing hole penetrating through the groove wall of the positioning groove is provided on the holding member, and the cable passes through the wire passing hole and is inserted into the terminal.

[0029] Optionally, the cable end cap is threadedly connected to the plastic-encapsulated main body. A waterproof groove is provided inside the cable end cap, and a waterproof assembly for sealing the gap between the hole wall of the wire passing hole and the side wall of the cable is provided in the waterproof groove.

[0030] Optionally, the waterproof assembly includes a sealing ring and a locking hoop. The sealing ring is sleeved on the cable, the locking hoop is sleeved on the sealing ring, and the outer ring of the locking hoop fits with the groove wall of the waterproof groove. A plurality of convex ribs are provided on the hole wall of the wire passing hole along its circumferential direction, and a plurality of limiting strips are provided on the groove wall of the waterproof groove along its circumferential direction. A plurality of openings and a plurality of limiting openings are respectively provided on the side wall of the locking hoop along its circumferential direction. The plurality of openings respectively correspond to the plurality of convex ribs one by one and are in concave-convex fit, and the plurality of limiting openings respectively correspond to the plurality of limiting strips one by one and are in concave-convex fit. The aperture of the wire passing hole increases from the side close to the terminal to the side far from the terminal, and the inner wall of the locking hoop close to the opening side fits with the side wall of the cable.

[0031] Optionally, the diameter of a part of the side wall of the locking hoop on the side of the opening increases from the side close to the terminal to the side far from the terminal.

[0032] Optionally, a first sealing ring groove is provided on the side wall of the holding member, and a first rubber ring is provided in the first sealing ring groove. The outer ring of the first rubber ring abuts against the inner side wall of the plastic-encapsulated main body.

[0033] Optionally, a second sealing ring groove is provided on the plastic-encapsulated main body, and a second rubber ring is provided in the second sealing ring groove. The outer ring of the second rubber ring abuts against the inner side wall of the cable end cap.

[0034] Optionally, a buckle or a clamping groove is provided on the side wall of the male plug end or the female plug end, and a clamping groove or a buckle is provided on the side wall of the female socket end or the male socket end, and the buckle is clamped in the clamping groove.

[0035] Optionally, unlocking sleeves are sleeved on the side walls of the male plug end or the female plug end located in the clamping groove and the side walls of the female socket end or the male socket end located in the clamping groove. An unlocking groove is provided on the unlocking sleeve, and the unlocking groove communicates with the clamping groove. When the buckle is inserted into the clamping groove, a part of the side wall of the buckle extends into the unlocking groove.

[0036] The elbow photovoltaic connector structure provided by the present utility model has the following beneficial effects:

[0037] 1. By adopting a 90° connecting elbow, after the photovoltaic connector is inserted into the photovoltaic device, the angle between the cable and the photovoltaic device is 90°, which helps to avoid continuous stress on the plug of the photovoltaic connector and improves the connection reliability between the photovoltaic connector and the photovoltaic device;

[0038] 2. The photovoltaic connector adopts a 90° connecting elbow, which can adapt to the scenarios where the photovoltaic device is placed horizontally or stacked, helping to save the external space of the photovoltaic device;

[0039] 3. The setting of the crown spring, the wiring terminal and the spring piece facilitates the rapid connection of the cable to the metal conductive part inside the connecting elbow by personnel, with high wiring efficiency and repeated disassembly.

[0040] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present utility model, nor is it used to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0042] Figure 1 It is a schematic diagram of the overall structure of the male plug end shown in the embodiment of the present application;

[0043] Figure 2 It is a schematic diagram of the overall structure of the female plug end shown in the embodiment of the present application;

[0044] Figure 3 It is a schematic diagram of the overall structure of the female socket end of the device shown in the embodiment of the present application;

[0045] Figure 4 This is a schematic diagram showing the overall structure of the male end of the device socket in the embodiment of the present application.

[0046] Figure 5 This is a schematic cross-sectional view showing the male end of the plug in the embodiment of the present application.

[0047] Figure 6 This is an exploded view showing the metal conductive part in the male end of the plug in the embodiment of the present application.

[0048] Figure 7 This is a schematic cross-sectional view showing the metal conductive part in the male end of the plug in the embodiment of the present application.

[0049] Figure 8 This is an exploded view showing the metal conductive part in the female end of the plug in the embodiment of the present application.

[0050] Figure 9 This is a schematic cross-sectional view showing the metal conductive part in the female end of the plug in the embodiment of the present application.

[0051] Figure 10 This is an exploded view showing the positional relationship among the plastic housing main body, the holding part and the cable end cap in the embodiment of the present application.

[0052] Figure 11 This is a schematic diagram showing the positional relationship between the holding part and the terminal in the embodiment of the present application.

[0053] Figure 12 This is a schematic diagram showing the spring piece on the terminal in an open state in the embodiment of the present application.

[0054] Figure 13 This is a schematic diagram showing the spring piece on the terminal in a closed state in the embodiment of the present application.

[0055] Figure 14 This is an exploded view showing the waterproof component in the embodiment of the present application.

[0056] Figure numerals: 1, plastic-coated body; 2, cable tail cover; 201, threading hole; 202, waterproof groove; 3, male end of plug; 4, female end of plug; 5, terminal; 501, wiring tube; 6, metal conductive part; 601, first stamping part; 602, adapter; 603, second stamping part; 604, installation groove; 605, crown spring; 606, injection hole; 607, anti-touch finger structure; 7, spring sheet; 701, first clamping part; 7011, unlocking hole; 702, connecting part; 703, pressing part; 704, first clamping groove; 705, first clamping block; 706, The second clamping part; 707, the second clamping block; 708, the second clamping groove; 709, the third clamping block; 8, the guide part; 9, the retaining part; 901, the positioning groove; 902, the wire hole; 10, the waterproof component; 101, the sealing ring; 102, the locking hoop; 103, the ridge; 104, the opening; 105, the limiting opening; 11, the first sealing ring groove; 12, the first rubber ring; 13, the second sealing ring groove; 14, the second rubber ring; 15, the buckle; 151, the clamping groove; 16, the unlocking sleeve; 17, the unlocking groove; 18, the female end of the socket; 19, the male end of the socket; 20, the connecting elbow. DETAILED DESCRIPTION

[0057] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0058] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0059] Combination Figure 1-14 As shown, this embodiment provides an elbow photovoltaic connector structure.

[0060] Reference Figure 1, the structure of the photovoltaic connector includes a 90° connecting elbow 20 and a cable (not shown in the figure) connected to the connecting elbow 20; in actual use, the 90° connecting elbow 20 is connected to the socket end of the photovoltaic device to achieve the communication connection between the photovoltaic connector and the photovoltaic device.

[0061] By using the 90° connecting elbow 20, the angle between the cable and the photovoltaic device after the photovoltaic connector and the photovoltaic device are inserted is 90°, which helps to avoid the continuous stress on the plug part of the photovoltaic connector and affect the connection reliability, enabling the photovoltaic connector to adapt to the scenarios where the photovoltaic device is placed horizontally or stacked, saving the external space of the photovoltaic device, and changing the problem that after the existing 180° photovoltaic connector is inserted into the socket of the photovoltaic device, the plug part extends too long from the device end and the tail cable forms a large angle.

[0062] Refer to Figure 1 and Figure 2 , the connecting elbow 20 includes a plastic-encased main body 1 arranged in an L shape and a cable end cover 2. One of the free ends of the plastic-encased main body 1 is set as the plug end, and the plug end is a male plug 3 or a female plug 4.

[0063] Refer to Figure 3 and Figure 4 , the socket end of the photovoltaic device in the prior art is a female socket 18 or a male socket 19. In this embodiment, the male plug 3 of the plastic-encased main body 1 is inserted and matched with the female socket 18 of the photovoltaic device, and the female plug 4 of the plastic-encased main body 1 is inserted and matched with the male socket 19 of the photovoltaic device.

[0064] Refer to Figure 5 , the cable end cover 2 is threadedly connected to the other free end of the plastic-encased main body 1. A wire passing hole 201 for the cable to pass through is provided on the side wall of the cable end cover 2, and the cable passes through the wire passing hole 201 and is electrically connected to the plug end of the plastic-encased main body 1.

[0065] Refer to Figures 1-4 , in this embodiment, two opposite buckles 15 are provided on the side wall of the male plug 3 and close to the female socket 18 of the device. Correspondingly, a card slot for the buckle 15 to insert is provided on the end wall of the device's female socket 18; two opposite card slots are provided on the side wall of the female plug 4 and close to the male socket 19 of the device, and a buckle 15 is provided on the side wall of the device's male socket 19 and is clamped in the card slot. The buckle 15 can be made of plastic material and has a certain elasticity. Furthermore, the clamping cooperation between the buckle 15 and the card slot can achieve the stable connection between the male plug 3 and the device's female socket 18 and between the female plug 4 and the device's male socket 19, which helps to improve the reliability of the communication connection between the photovoltaic connector and the photovoltaic device.

[0066] In actual use, in order to facilitate the removal of the buckle 15 from the slot, the slot in this embodiment penetrates the outer wall of the plug end or the outer wall of the device socket end. Specifically, the side walls of the plug end and the device socket end are sleeved with an unlocking sleeve 16, and the unlocking sleeve 16 is provided with an unlocking groove 17, and the unlocking groove 17 is connected with the slot; when the buckle 15 is inserted into the slot, part of the side wall of the buckle 15 can extend into the unlocking groove 17; when the photovoltaic connector needs to be removed from the photovoltaic device, a screwdriver or other auxiliary equipment can be inserted into the unlocking groove 17 to push out the buckle 15, so that part of the side wall of the buckle 15 retreats into the slot, and the buckle 15 can be taken out from the slot.

[0067] Reference Figure 5 The overmolded body 1 is provided with a terminal block 5 and a metal conductive member 6. The terminal block 5 is made of conductive material and is used to electrically connect the cable core to the metal conductive member 6. During the production of injection molding, the metal conductive member 6 is integrally overmolded to form the overmolded body 1. By connecting the terminal block 5 to the metal conductive member 6, the cable can be electrically connected to the photovoltaic device through the metal conductive member 6.

[0068] Reference Figure 5 , Figure 6 and Figure 7 The metal conductive part 6 is an L-shaped stamped and stretched part, and the metal conductive part 6 includes a first stamping part 601, a transition part 602, and a second stamping part 603 which are connected in sequence, wherein the first stamping part 601, the transition part 602, and the second stamping part 603 are all stamped conductive parts, and the first stamping part 601 and the second stamping part 603 are both arranged in a columnar shape, and the axes where the central axes of the first stamping part 601 and the second stamping part 603 are located are perpendicular to each other, and an installation groove 604 is provided inside the first stamping part 601 and / or the second stamping part 603.

[0069] In this embodiment, the metal conductive member 6 is configured to have different structures according to different types of plug ends so as to be matched and connected with different types of device socket ends.

[0070] Reference Figures 6-9 The metal conductive part 6 also includes at least one crown spring 605.

[0071] When the plug end is the male end 3 of the plug, the first stamping part 601 and the second stamping part 603 are both provided with mounting grooves 604, and the two mounting grooves 604 are both provided with crown springs 605. After the overmolded body 1 is injection molded, the crown springs 605 are inserted into the mounting grooves 604 of the first stamping part 601 and the second stamping part 603, wherein the terminal 5 is used for plugging and connecting inside the crown spring 605 in the first stamping part 601, and the crown spring 605 in the second stamping part 603 is used for plugging and matching with the female end 18 of the device socket, and the electrical connection between the cable and the photovoltaic device can be achieved through the two crown springs 605.

[0072] When the plug end is the female plug 4, an installation groove 604 is provided inside the first stamping part 601 or the second stamping part 603. Refer to Figure 7 and Figure 9 , in this embodiment, the first stamping part 601 of the L-shaped metal conductive part 6 is set as the horizontal end, and the second stamping part 603 is set as the vertical end. Among them, an installation groove 604 is provided inside the side wall of the first stamping part 601, and a crown spring 605 is provided in the installation groove 604. The wiring terminal 5 is used for plugging and connecting with the crown spring 605.

[0073] It should be noted that when the plug end is the female plug 4, an injection hole 606 is provided inside the side wall of the second stamping part 603, and the diameter of the injection hole 606 is smaller than the diameter of the installation groove 604. When the metal conductive part 6 is plastically molded, injection materials are filled in the injection hole 606 of the second stamping part 603, so that an anti-touch finger structure 607 is injection-molded on the second stamping part 603, and the anti-touch finger structure 607 of the second stamping part 603 is inserted and matched with the male socket end 19. Since the second stamping part 603 is close to the end of the female plug 4 and the second stamping part 603 is a metal conductor, the operator's finger is likely to accidentally touch the second stamping part 603 and cause an electric shock hazard. Therefore, by setting the injection hole 606 to injection-mold the anti-touch finger structure 607, the effect of preventing electric shock is achieved, which is safe and reliable.

[0074] Refer to Figure 5 , Figure 10 and Figure 11 , the wiring terminal 5 is fixed to the inside of the plastic-encased part main body 1 through the holding part 9. An installation groove that is dimensionally matched with the holding part 9 is injection-molded inside the plastic-encased part main body 1. The installation groove is provided to insert and fix the holding part 9 inside the plastic-encased part main body 1. A positioning groove 901 for accommodating the wiring terminal 5 is provided on the side wall of the holding part 9, and the wiring terminal 5 is snap-fitted and fixed in the positioning groove 901.

[0075] A wire passing hole 902 penetrating through the groove wall of the positioning groove 901 is provided on the holding part 9. When installing the cable, the cable is sequentially passed through the wire passing hole 201 of the cable end cap 2, the wire passing hole 902 on the holding part 9, and the wiring terminal 5 on the wiring terminal 5. Finally, the wiring terminal 5 is plugged into the inner wall of the crown spring 605 to realize the connection between the cable and the metal conductive part 6.

[0076] Refer to Figure 12 , in order to help improve the reliability of the abutting connection between the cable core and the tube wall of the wiring terminal 5, a locking part for fixing the cable is provided on the wiring terminal 5. After the cable is fixed to the wiring terminal 5 by using the locking part, the cable end cap 2 is sleeved and threadedly connected to the end wall of the plastic-encased part main body 1 to complete the connection between the cable and the plastic-encased part main body 1.

[0077] Reference Figure 12 and Figure 13 Figure 13 , the locking member is provided on the terminal 5 and is located on the side of the guiding portion 8 away from the terminal 5. The locking member is a spring piece 7, and the spring piece 7 includes a first clamping portion 701, a connecting portion 702, and a pressing portion 703 that are connected in sequence. Two opposite first clamping blocks 705 are vertically provided on the terminal 5. Two first clamping grooves 704 are respectively provided on the two side walls of the first clamping portion 701, and the two first clamping grooves 704 respectively correspond to the two first clamping blocks 705 one by one. The two side walls of the connecting portion 702 are respectively rotatably connected to the two side walls of the terminal 5; by rotating the connecting portion 702, the first clamping block 705 can be clamped on the groove wall of the first clamping groove 704.

[0078]

[0078] The pressing portion 703 is formed by bending downward and obliquely from the side wall of the connecting portion 702. The pressing portion 703 is obliquely arranged, and the extending direction of the free end of the pressing portion 703 and the extending direction of the free end of the first clamping portion 701 both face the direction of the metal conductive member 6. An included angle α is formed between the pressing portion 703 and the connecting portion 702, and the angle of the included angle α is 30° to 70°. A wiring space for the cable to pass through is reserved between the side wall of the pressing portion 703 facing away from the included angle α and the side wall of the terminal 5.

[0079]

[0079] During wiring, rotate the connecting portion 702 so that the pressing portion 703 is lifted upward. At this time, a wiring space is formed between the bottom wall of the pressing portion 703 and the side wall of the terminal 5. Then, during wiring, the cable can be sequentially passed through the wire passing hole 201 of the cable end cover 2, the wire passing hole 902 of the holding member 9, the wiring space of the terminal 5, and the terminal 5 of the terminal 5 until the cable abuts against the inner tube wall of the terminal 5; then rotate the connecting portion 702, the connecting portion 702 drives the first clamping portion 701 to rotate towards the first clamping block 705, and at the same time the connecting portion 702 drives the pressing portion 703 to rotate towards the cable. When the first clamping portion 701 is clamped on the first clamping block 705, the pressing portion 703 presses the cable against the side wall of the terminal 5, and finally the locking and fixing of the cable is realized.

[0080] Reference Figure 12 and Figure 13 Figure 13 In this embodiment, the spring piece 7 further includes two second clamping portions 706, and the two second clamping portions 706 respectively correspond to the two side walls of the connecting portion 702. The second clamping portions 706 are formed by bending downward from the side walls of the connecting portion 702. The second clamping portions 706 are perpendicular to the connecting portion 702, and the second clamping portions 706 are rotatably connected to the side walls of the terminal 5. The first clamping portion 701, the connecting portion 702, the pressing portion 703, and the second clamping portion 706 are integrally formed to constitute the spring piece 7, and the spring piece 7 is made of stainless steel.

[0081] To further improve the stability of locking and fixing the cable, two opposite second clamping blocks 707 are also provided on the terminal 5. The second clamping blocks 707 are arranged on the side of the first clamping block 705 away from the metal conductive part 6. The first clamping block 705 and the second clamping blocks 707 are arranged opposite to each other along the wiring direction of the cable. A second clamping groove 708 is provided on the side wall of the second clamping block 707, and a third clamping block 709 is provided on the side wall of the second clamping part 706. The clamping directions of the first clamping block 705 and the third clamping block 709 are opposite. When it is necessary to lock the cable, rotate the connecting part 702 so that the pressing part 703 and the first clamping part 701 both rotate towards the cable direction. At this time, the pressing part 703 gradually changes from an inclined state to a vertical state. The third clamping block 709 on the second clamping part 706 rotates towards the second clamping block 707, and the first clamping part 701 rotates towards the first clamping block 705. When the third clamping block 709 abuts against the groove wall of the second clamping groove 708 and the first clamping block 705 abuts against the groove wall of the first clamping groove 704, the clamping and fixing between the spring piece 7 and the terminal 5 is realized. At the same time, the pressing part 703 presses the cable tightly on the terminal 5, which helps to avoid cable displacement and makes the cable core stably abut against the inner bottom wall of the terminal 5, so as to improve the connection reliability of the photovoltaic connector.

[0082] It should be noted that, in order to improve the wiring efficiency, an unlocking hole 7011 is provided on the first clamping part 701. The unlocking hole 7011 is located at the middle position between the two first clamping grooves 704 and is used for inserting the tip of a screwdriver. When it is necessary to disassemble and assemble the cable, the operator can use the screwdriver to pry up the first clamping part 701, so that the first clamping block 705 is disengaged from the first clamping groove 704 and the third clamping block 709 is disengaged from the second clamping groove 708, thus facilitating the operator to remove the cable from the terminal 5.

[0083] Since the spring piece 7 is made of stainless steel, taking advantage of the elasticity of the spring piece 7 itself, it is convenient for the operator to clamp and fix the spring piece 7 to the terminal 5, and it is also convenient to separate the clamping part between the spring piece 7 and the terminal 5, which is convenient for wiring.

[0084] Since the spring piece 7 in this embodiment has elasticity by itself, in order to prevent the pressing part 703 from rotating out of the wiring space, a stop strip (not shown in the figure) is provided on the side wall of the terminal 5 in the wiring space. The stop strip is used to abut against the bottom wall on the free end side of the pressing part 703, and the rotation angle of the pressing part 703 is restricted by the stop strip.

[0085] In this embodiment, in order to prevent the cable core from extending out of the wiring space, two stop parts 8 are formed by bending the two side walls of the terminal 5 inward. The two stop parts 8 form a blocking structure to limit the cable core in the wiring space, which is convenient for the spring piece 7 to press the cable core tightly against the inner bottom wall of the terminal 5.

[0086] Refer toFigure 5 and Figure 14 , in order to improve the reliability of the connection of the photovoltaic connector, a waterproof groove 202 is provided on the inner wall of the cable end cover 2, and a waterproof component 10 is provided in the waterproof groove 202. The waterproof component 10 is used to prevent rainwater from entering the inside of the plastic-encapsulated body 1.

[0087] The waterproof component 10 specifically includes a sealing ring 101 and a locking hoop 102, and both the sealing ring 101 and the locking hoop 102 are made of rubber. In this embodiment, a sealing ring 101 with a suitable size can be selected according to the wire diameter of the cable. The locking hoop 102 can be tightly sleeved on the sealing ring 101. After passing the cable through the wire passing hole 201, the cable is then passed through the sealing ring 101. The inner side wall of the inner ring of the sealing ring 101 can be closely attached to the side wall of the cable, and the outer ring of the locking hoop 102 is closely attached to the groove wall of the waterproof groove 202.

[0088] It should be noted that a wire passing hole 902 is provided on the side wall of the free end of the holding member 9, and the wire passing hole 902 penetrates through the groove wall of the positioning groove 901. The cable passing through the sealing ring 101 can pass through the wire passing hole 902 and penetrate into the terminal 5 of the terminal block 5. The wire passing hole 902 is used for plug-in cooperation with the locking hoop 102. Among them, a plurality of openings 104 and a plurality of limiting openings 105 are respectively arranged in an array along the circumferential direction of the side wall of the locking hoop 102. The limiting openings 105 and the openings 104 are arranged along the axial direction of the locking hoop 102. The limiting openings 105 are arranged on the side close to the wire passing hole 201 of the cable end cover 2, and the openings 104 are arranged on the side close to the holding member 9.

[0089] The arrangement of the openings 104 and the limiting openings 105 can increase the elastic deformation range of the locking hoop 102, so as to sleeve sealing rings 101 with different diameter sizes. A plurality of convex ridges 103 are provided on the hole wall of the wire passing hole 902, and the plurality of convex ridges 103 respectively correspond to the plurality of openings 104 one by one and are in concave-convex fit. A plurality of limiting strips are provided on the groove wall of the waterproof groove 202 along the circumferential direction thereof, and the plurality of limiting openings 105 respectively correspond to the plurality of limiting strips one by one and are in concave-convex fit. When the locking hoop 102 is inserted into the wire passing hole 902, the convex ridges 103 are inserted into the openings 104, and the limiting strips are inserted into the limiting openings 105. The cooperation of the convex ridges 103 and the openings 104 and the cooperation of the limiting strips and the limiting openings 105 play a role in limiting the position of the locking hoop 102 in the wire passing hole 902, thereby positioning the cable, which helps to avoid the cable rotating synchronously with the cable end cover 2 when the cable end cover 2 is rotated.

[0090] In this embodiment, the aperture diameter of the wire passing hole 902 increases from the side close to the wiring terminal 5 to the side far from the wiring terminal 5, and the diameter of a partial side wall of the locking hoop 102 on the side of the opening 104 increases from the side close to the wiring terminal 5 to the side far from the wiring terminal 5; when wiring, after passing the cable through the sealing ring 101, insert the locking hoop 102 into the wire passing hole 902, so that the cable passes through the wiring terminal 5 in sequence and abuts against the inner tube wall of the wiring terminal 5, and then snap the spring piece 7 onto the wiring terminal 5 to realize the locking and fixing of the cable.

[0091] Finally, thread the cable end cover 2 onto the plastic package main body 1; when rotating the cable end cover 2, the groove wall of the waterproof groove 202 gradually approaches the locking hoop 102 until the locking hoop 102 abuts against the groove wall of the waterproof groove 202, and then continue to rotate the cable end cover 2. Due to the settings of the convex rib 103, the opening 104 limiting strip and the limiting port 105, the displacement direction of the locking hoop 102 is limited, and through the special shape design of the locking hoop 102 and the wire passing hole 902, furthermore, the cable end cover 2 drives the locking hoop 102 to gradually approach the wiring terminal 5 by means of the waterproof groove 202. As the aperture diameter of the wire passing hole 902 gradually decreases, the side wall of the locking hoop 102 at the opening 104 gradually clamps the sealing ring 101, so that the sealing ring 101 closely adheres to the side wall of the cable, which helps to prevent rainwater from flowing to the wiring terminal 5 through the gap between the wire passing hole 902 and the side wall of the cable. The waterproof method constituted by the above structure has a good sealing effect, can seal the wire diameters of different cables, and has a wide application range.

[0092] Refer to Figure 5 and Figure 14 In order to further improve the waterproof effect inside the plastic package main body 1, the waterproof component 10 further includes a first rubber ring 12 and a second rubber ring 14. A first sealing ring groove 11 is provided on the outer side wall of the holding component 9 along its circumferential direction, and the first rubber ring 12 is adhesively bonded to the groove wall of the first sealing ring groove 11. After inserting the holding component 9 into the plastic package main body 1, the inner ring of the first rubber ring 12 abuts against the inner side wall of the plastic package main body 1; a second sealing ring groove 13 is provided on the outer side wall of the plastic package main body 1 along its circumferential direction, and the second rubber ring 14 is adhesively arranged in the second sealing ring groove 13; when the cable end cover 2 is threadedly connected to the plastic package main body 1, the outer ring of the second rubber ring 14 abuts against the inner side wall of the cable end cover 2.

[0093] The second rubber ring 14 is used to seal the gap between the cable end cover 2 and the outer side wall of the plastic package main body 1 to achieve a preliminary waterproof effect; the first rubber ring 12 is used to seal the gap between the holding component 9 and the inner side wall of the plastic package main body 1 to achieve a secondary waterproof effect; by combining the first rubber ring 12 and the second rubber ring 14, double waterproofing is carried out inside the plastic package main body 1, and the waterproof effect is good.

[0094] Note that the above is only the preferred embodiment of the present utility model and the applied technical principles. Those skilled in the art will understand that the present utility model is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present utility model. Therefore, although the present utility model has been described in detail through the above embodiments, the present utility model is not limited to the above embodiments. Without departing from the concept of the present utility model, more other equivalent embodiments can be included, and the scope of the present utility model is determined by the scope of the appended claims.

Claims

1. An elbow photovoltaic connector structure, characterized in that: include: Cables; A connecting elbow (20) comprises a plastic-coated body (1) and a cable tail cover (2), wherein the plastic-coated body (1) is arranged in an L-shape, one end of the plastic-coated body (1) is arranged as a plug end that is mated with a socket end of a device, the plug end is a male plug end (3) or a female plug end (4), the other end of the plastic-coated body (1) is assembled and connected with the cable tail cover (2), and the cable tail cover (2) is provided with a threading hole (201) for inserting a cable into the plastic-coated body (1); A wiring terminal (5) is arranged inside the overmolded body (1), and a locking piece for fixing the cable core is provided on the wiring terminal (5); A metal conductive part (6) is injection molded and connected to the inside of the overmolded body (1); one end of the metal conductive part (6) is electrically connected to the wiring terminal (5); and the other end of the metal conductive part (6) is electrically connected to the device socket end.

2. The photovoltaic connector structure according to claim 1, characterized in that: The metal conductive part (6) comprises a first stamping part (601), a transition part (602), and a second stamping part (603) which are connected in sequence, and a mounting groove (604) is provided inside the first stamping part (601) and / or the second stamping part (603); When the plug end is a male plug end (3), the first stamping portion (601) and the second stamping portion (603) are both provided with mounting grooves (604), and the two mounting grooves (604) are both provided with crown springs (605), one of the crown springs (605) is plugged into and matched with the wiring terminal (5), and the other crown spring (605) is plugged into and matched with the female end (18) of the device socket; When the plug end is a female plug end (4), a mounting groove (604) is provided inside the first stamping portion (601) or the second stamping portion (603), a crown spring (605) is provided inside the mounting groove (604), the connection terminal (5) is plugged into and matched with the crown spring (605), and the second stamping portion (603) or the first stamping portion (601) is plugged into and matched with the male end (19) of the device socket.

3. The photovoltaic connector structure according to claim 2, characterized in that: The straight lines on which the central axes of the first punching portion (601) and the second punching portion (603) lie are perpendicular to each other.

4. The photovoltaic connector structure according to claim 2, characterized in that: When the plug end is a female plug end (4), an injection hole (606) is provided in the second stamping portion (603) or the first stamping portion (601) so as to inject the second stamping portion (603) or the first stamping portion (601) of the female plug end (4) to form an anti-touch finger structure (607).

5. The photovoltaic connector structure according to claim 4, characterized in that: The cross-sectional area in the groove depth direction perpendicular to the injection hole (606) is smaller than the cross-sectional area in the groove depth direction perpendicular to the installation groove (604).

6. The photovoltaic connector structure according to claim 1, characterized in that: The locking member is a spring sheet (7), and the spring sheet (7) comprises a first clamping portion (701), a connecting portion (702), and a pressing portion (703) which are connected in sequence, and the connecting portion (702) is rotatably connected to the connecting terminal (5); Two first clamping grooves (704) are respectively provided on the two side walls of the first clamping portion (701), and the wiring terminal (5) is provided with a first clamping block (705) that is clamped and matched with the first clamping grooves (704); The free end extension direction of the pressing portion (703) and the free end extension direction of the first clamping portion (701) are both toward the metal conductive member (6), and a wiring space for the cable to pass through is reserved between the bottom wall of the pressing portion (703) and the inner bottom wall of the wiring terminal (5); When the first clamping block (705) is clamped in the first clamping groove (704), the pressing portion (703) presses the cable against the inner bottom wall of the wiring terminal (5).

7. The photovoltaic connector structure according to claim 6, characterized in that: A second clamping portion (706) is formed by bending two side walls of the connecting portion (702), and the two second clamping portions (706) are respectively rotatably connected to the two side walls of the connecting terminal (5); The wiring terminal (5) is provided with two opposite second clamping blocks (707), the first clamping block (705) and the second clamping block (707) are arranged opposite to each other along the threading direction of the cable, the side wall of the second clamping block (707) is provided with a second clamping groove (708), and the side wall of the second clamping portion (706) is provided with a third clamping block (709); When the first clamping block (705) is clamped in the first clamping slot (704), the third clamping block (709) is clamped in the second clamping slot (708), and the clamping directions of the first clamping block (705) and the third clamping block (709) are opposite.

8. The photovoltaic connector structure according to claim 6, characterized in that: The first clamping portion (701) is provided with an unlocking hole (7011) that matches with a screwdriver.

9. The photovoltaic connector structure according to claim 6, characterized in that: The inner bottom wall of the wiring terminal (5) located in the wiring space is provided with a stop bar, and the stop bar is used to abut against the bottom wall on one side of the free end of the pressing portion (703).

10. The photovoltaic connector structure according to claim 6, characterized in that: The two side walls of the wiring terminal (5) are bent inward to form two stop portions (8), and the stop portions (8) are used to prevent the cable core from extending out of the wiring space.

11. The photovoltaic connector structure according to claim 1, characterized in that: A retaining component (9) is detachably provided inside the overmolded body (1); a positioning groove (901) for accommodating a wiring terminal (5) is provided on the retaining component (9); a wire-passing hole (902) penetrating the groove wall of the positioning groove (901) is provided on the retaining component (9); the cable passes through the wire-passing hole (902) and is inserted into the wiring terminal (5).

12. The photovoltaic connector structure according to claim 11, characterized in that: The cable tail cover (2) is threadedly connected to the plastic-coated body (1), and a waterproof groove (202) is provided inside the cable tail cover (2). A waterproof component (10) is provided inside the waterproof groove (202) for sealing the gap between the hole wall of the wire hole (902) and the side wall of the cable.

13. The photovoltaic connector structure according to claim 12, characterized in that: The waterproof component (10) comprises a sealing ring (101) and a locking hoop (102), wherein the sealing ring (101) is sleeved on the cable, and the locking hoop (102) is sleeved on the sealing ring (101), and the outer ring of the locking hoop (102) is in contact with the groove wall of the waterproof groove (202), and the hole wall of the wire hole (902) is provided with a plurality of ridges (103) along its circumference, and the groove wall of the waterproof groove (202) is provided with a plurality of limit strips along its circumference, and the side of the locking hoop (102) is provided with a plurality of ridges (103) along its circumference. The wall is provided with a plurality of openings (104) and a plurality of limiting openings (105) along its circumference, the plurality of openings (104) respectively correspond to the plurality of ridges (103) one by one and are matched in a concave-convex manner, the plurality of limiting openings (105) respectively correspond to the plurality of limiting strips one by one and are matched in a concave-convex manner, the aperture of the wire hole (902) increases from the side close to the wiring terminal (5) to the side away from the wiring terminal (5), and the inner wall of the locking hoop (102) close to the opening (104) is in contact with the side wall of the cable.

14. The photovoltaic connector structure according to claim 13, characterized in that: The diameter of a portion of the side wall of the locking hoop (102) located on one side of the opening (104) increases gradually from a side close to the wiring terminal (5) to a side away from the wiring terminal (5).

15. The photovoltaic connector structure according to claim 11, characterized in that: The side wall of the retaining component (9) is provided with a first sealing ring groove (11), a first rubber ring (12) is provided in the first sealing ring groove (11), and the outer ring of the first rubber ring (12) abuts against the inner side wall of the overmolded body (1).

16. The photovoltaic connector structure according to claim 1, characterized in that: A second sealing ring groove (13) is provided on the overmolded body (1), a second rubber ring (14) is provided in the second sealing ring groove (13), and an outer ring of the second rubber ring (14) abuts against an inner wall of the cable tail cover (2).

17. The photovoltaic connector structure according to claim 2, characterized in that: The side wall of the male plug end (3) or the female plug end (4) is provided with a buckle (15) or a slot, and the side wall of the female socket end (18) or the male socket end (19) is provided with a slot or a buckle (15), and the buckle (15) is snapped into the slot.

18. The photovoltaic connector structure according to claim 17, characterized in that: The male end (3) of the plug or the female end (4) of the plug is located on the side wall of the card slot, and the female end (18) of the socket or the male end (19) of the socket is located on the side wall of the card slot. An unlocking sleeve (16) is provided on the unlocking sleeve (16). The unlocking slot (17) is communicated with the card slot. When the buckle (15) is inserted into the card slot, part of the side wall of the buckle (15) extends into the unlocking slot (17).

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