Photovoltaic connector and insert assembly
The photovoltaic connector with alternating limiting protrusions simplifies the processing of molding inserts, ensuring stability and reducing costs by eliminating the need for complex slider structures.
Patent Information
- Application Number
- CN202420844361.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-22
AI Technical Summary
The existing photovoltaic connectors have complex and costly molding inserts due to the use of inward-retracting slider structures, which require multiple sheets and a slider to change the diameter during the molding process.
A photovoltaic connector design featuring alternating first and second limiting protrusions on the male and female end shells, allowing for a solid insert structure that can be easily withdrawn without a slider, simplifying the processing and reducing costs.
The new design ensures axial stability and easy processing of the connectors, preventing damage to the insert and reducing production costs while maintaining product quality.
Smart Images
Figure CN222214524U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of connectors, and more specifically, to a photovoltaic connector and insert assembly. Background Art
[0002] Photovoltaic connectors are important components in solar photovoltaic power generation systems, used to connect multiple solar cell modules into a system. Photovoltaic connectors consist of male and female connectors, which can be easily plugged in and out. Due to the harsh environment in which photovoltaic connectors are located, the stability of the connection is extremely high.
[0003] At present, most structures of photovoltaic connectors have snaps on the terminals, which are fixed by matching with the grooves on the inner wall of the shell. When the mold is used to form the inner wall of the shell, the molded insert generally adopts an inward-retracting slider structure. The inward-retracting slider structure requires a hollow insert including multiple sheets, and a slider is set in the hollow insert; when forming the shell, the sheets are radially squeezed by inserting the slider to increase the diameter of the multiple sheets; when removing the hollow insert, the multiple sheets are reduced to the initial diameter by withdrawing the slider, so that the insert can be withdrawn from the groove. This molding insert is complex to process and has high cost. Summary of the invention
[0004] The purpose of the embodiments of the present application is to provide a photovoltaic connector and an insert assembly to solve the technical problem that the molding inserts of the shell are complicated to process and have high costs.
[0005] In the first aspect, the present application provides a photovoltaic connector, comprising a pin terminal, a socket terminal, a male end shell and a female end shell; the pin terminal and the socket terminal are both provided with snap hooks, the opposite ends of the pin terminal and the socket terminal are plug-in ends, and the pin terminal and the socket terminal are plugged in along a first direction; at least one of the male end shell and the female end shell is provided with a terminal limiting structure; the terminal limiting structure comprises a plurality of first limiting protrusions and a plurality of second limiting protrusions; the plurality of first limiting protrusions and the plurality of second limiting protrusions are all arranged at intervals around the first direction, and the plurality of first limiting protrusions and the plurality of second limiting protrusions are arranged in an alternating manner; the first limiting protrusion is limited in cooperation with the snap hook, and the interval distance between two adjacent first limiting protrusions is less than the width of the snap hook; the plurality of second limiting protrusions are limited in cooperation with the plug-in end.
[0006] The beneficial effects of the photovoltaic connector provided by the present application are that: in the circumferential direction, multiple first limiting protrusions and multiple second limiting protrusions are arranged alternately, the gap between two adjacent first limiting protrusions corresponds to a second limiting protrusion, and the gap between adjacent second limiting protrusions corresponds to the first limiting protrusion; the buckle and the plug-in end of the socket terminal or the pin terminal are arranged between the first limiting protrusion and the second limiting protrusion.
[0007] The first limiting protrusion cooperates with the buckle to limit the position of the buckle in the first direction through the first limiting protrusion, and the distance between adjacent first limiting protrusions is smaller than the width of the buckle to prevent the buckle from escaping from the gap between the first limiting protrusions; the second limiting protrusion cooperates with the plug-in end to limit the position of the plug-in end in the first direction through the second limiting protrusion; the male end shell or the female end shell limits the position of the socket terminal or the pin terminal in the first direction through the first limiting protrusion and the second limiting protrusion to ensure the axial stability of the socket terminal. After the male end shell or the female end shell is injection molded, the insert can be withdrawn from between adjacent first limiting protrusions and adjacent second limiting protrusions respectively. Compared with the structure of the retracted slider, the present application does not need to set a hollow structure and a slider to change the diameter of the insert before and after the male end shell or the female end shell is molded; the insert can be set as a solid whole, which is simple to process and has lower cost; when the insert is withdrawn, it does not interfere with the first limiting protrusion and the second limiting protrusion, and does not need to be forced off. The insert and the first limiting protrusion and the second limiting protrusion are not easily damaged, thereby ensuring product quality.
[0008] In some embodiments, the terminal limiting structure also includes a plurality of third limiting protrusions arranged at intervals around the first direction, the third limiting protrusions extending along the first direction, the third limiting protrusions being connected to the second limiting protrusions and arranged at intervals with the first limiting protrusions; the third limiting protrusions are limitedly matched with the outer wall surface of the pin terminal or the socket terminal.
[0009] In some embodiments, at least one of the male end shell and the female end shell includes an insulating body, a waterproof ring and a sealing cover; a baffle is provided on the inner wall surface of the insulating body, the sealing cover is connected to the insulating body, and the waterproof ring is placed inside the insulating body; in the first direction, one side of the waterproof ring abuts against the baffle, and the other side of the waterproof ring abuts against the inner wall surface of the sealing cover.
[0010] In some embodiments, the insulating body has a first inner conical surface, the diameter of which gradually increases along the direction from the stop platform to the sealing cover, and the waterproof ring has a first outer conical surface that matches the first inner conical surface.
[0011] In some embodiments, the sealing cover has a second inner conical surface, the diameter of which gradually decreases along the direction from the stop platform to the sealing cover, and the waterproof ring also has a second outer conical surface that matches the second inner conical surface.
[0012] In some embodiments, the sealing cover is threadedly connected to the insulating body.
[0013] In some embodiments, the jack terminal includes a spring sheet structure, the spring sheet structure includes a plurality of conductive sheets spaced apart and distributed around the first direction, and a tightening section is provided at a middle position of the spring sheet structure in the first direction.
[0014] In some embodiments, two ends of the conductive sheet are staggered.
[0015] In the second aspect, the present application also provides an insert assembly, including a first insert and a second insert; the first insert includes a first main body, a plurality of first forming arms and a plurality of first forming tables; the first main body is a rod-shaped structure extending along the first direction, and one end of the first main body is connected to the plurality of first forming arms and the plurality of first forming tables; the plurality of first forming arms and the plurality of first forming tables are arranged alternately around the first direction; the second insert includes a second main body, a plurality of second forming arms and a plurality of second forming tables; the second main body is a rod-shaped structure extending along the first direction, and one end of the second main body is connected to the plurality of second forming arms and the plurality of second forming tables; the plurality of second forming arms and the plurality of second forming tables are arranged alternately around the first direction; the first insert and the second insert are plug-fitted, and the first forming arm and the second forming arm are arranged alternately; the second forming arm and the adjacent two first forming arms, the first forming table, and the first main body form a first groove, and the first groove is used to form the first limiting protrusion of any one of the photovoltaic connectors in the first aspect above; the adjacent two second forming arms and the second forming table, the second main body, and the first forming arm form a second groove, and the second groove is used to form the second limiting protrusion of any one of the photovoltaic connectors in the first aspect above.
[0016] The beneficial effect of the insert assembly provided by the present application is that the first insert and the second insert are inserted into each other to form a first groove and a second groove. The first groove is used to form a first limiting protrusion, and the second groove is used to form a second limiting protrusion. When the insert assembly is taken out, the first forming arm can be drawn out from between adjacent first limiting protrusions, and the second forming arm can be drawn out from between adjacent second limiting protrusions. Compared with the structure of the retracted slider, the insert assembly of the present application can directly enter and exit between the first limiting protrusion and the second limiting protrusion before and after the male end shell or the female end shell is formed, without the need to set a hollow structure and a slider to change the diameter; the first insert and the second insert can both be set as a solid whole, which is simple to process and has lower cost; the insert assembly does not interfere with the first limiting protrusion and the second limiting protrusion, and does not need to be forcibly removed, which can reduce the interaction force between the insert assembly and the first limiting protrusion and the second limiting protrusion, and the insert assembly and the first limiting protrusion and the second limiting protrusion are not easy to be damaged, thereby ensuring product quality.
[0017] In some embodiments, the first forming arm includes a first forming section and a second forming section; two adjacent first forming sections and the first forming platform, the first main body, and the second forming arm constitute the first groove; the second forming section and the first forming section, two adjacent second forming arms, and the second forming platform constitute the third groove, and the third groove is used to form the third limiting protrusion of any one of the photovoltaic connectors of the first aspect mentioned above; the second forming section and two adjacent second forming arms, the second forming platform, and the second main body constitute the second groove. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0019] Figure 1 A schematic diagram of a photovoltaic connector provided in an embodiment of the present application;
[0020] Figure 2 for Figure 1 Schematic diagram of the explosion structure;
[0021] Figure 3 A schematic diagram of the structure of the jack terminal provided in an embodiment of the present application;
[0022] Figure 4 A schematic diagram of the structure of the pin terminal provided in the embodiment of the present application;
[0023] Figure 5 A schematic diagram of the structure of the female housing provided in an embodiment of the present application;
[0024] Figure 6 A schematic diagram of the structure of the male end housing provided in an embodiment of the present application;
[0025] Figure 7 A cross-sectional view of the insulating body of the male housing provided in an embodiment of the present application;
[0026] Figure 8 A schematic diagram of the structure of the insulating body of the female housing provided in an embodiment of the present application;
[0027] Fig. 9 A schematic structural diagram of the insulating body of the male terminal housing provided in an embodiment of the present application;
[0028] Fig.10 A schematic diagram of the structure of the waterproof ring provided in the embodiment of the present application;
[0029] Fig.11 A schematic diagram of the structure of the insert assembly provided in an embodiment of the present application;
[0030] Fig.12 for Fig.11 An enlarged schematic diagram of a local A;
[0031] Fig.13 for Fig.12 An enlarged schematic diagram of a local B;
[0032] Fig.14 A schematic diagram of the structure of the first insert provided in an embodiment of the present application;
[0033] Fig.15 A schematic diagram of the structure of the second insert provided in an embodiment of the present application.
[0034] Among them, the reference numerals in the figure are:
[0035] 10- Photovoltaic connector;
[0036] 11-socket terminal; 111-clip; 112-plug terminal; 113-spring structure; 1131-conductive sheet; 1132-gap;
[0037] 12-pin terminal;
[0038] 13-male end housing; 131-insulating body; 1311-terminal limiting structure; 13111-first limiting protrusion; 13112-second limiting protrusion; 13113-third limiting protrusion; 1312-stop; 1313-first inner cone; 1314-external thread; 132-waterproof ring; 1321-first outer cone; 1322-second outer cone; 133-sealing cover;
[0039] 14- female end housing;
[0040] 15- sealing ring;
[0041] 20-Insert assembly;
[0042] 21-first insert; 211-first main body; 212-first molding arm; 2121-first molding section; 2122-second molding section; 213-first molding table;
[0043] 22-second insert; 221-second body; 222-second molding arm; 223-second molding table;
[0044] 23- first groove;
[0045] 24- second groove;
[0046] 25-Third groove. DETAILED DESCRIPTION
[0047] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0048] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0049] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0051] In a first aspect, an embodiment of the present application provides a photovoltaic connector 10, such as Figure 1-2 As shown, it includes a pin terminal 12, a socket terminal 11, a male end housing 13 and a female end housing 14; Figure 3-4 As shown, the pin terminal 12 and the socket terminal 11 are both provided with a buckle 111, and the opposite ends of the pin terminal 12 and the socket terminal 11 are plug-in ends 112, and the pin terminal 12 and the socket terminal 11 are plugged in along a first direction; Figure 5-7As shown, a terminal limiting structure 1311 is arranged in at least one of the male end housing 13 and the female end housing 14; the terminal limiting structure 1311 includes a plurality of first limiting protrusions 13111 and a plurality of second limiting protrusions 13112; the plurality of first limiting protrusions 13111 and the plurality of second limiting protrusions 13112 are arranged at intervals around the first direction, and the plurality of first limiting protrusions 13111 and the plurality of second limiting protrusions 13112 are arranged alternately; the first limiting protrusions 13111 are limitedly matched with the buckle 111, and the interval distance between two adjacent first limiting protrusions 13111 is smaller than the width of the buckle 111; the plurality of second limiting protrusions 13112 are limitedly matched with the plug-in end 112.
[0052] Optionally, the jack terminal 11 is installed in the male housing 13, and the pin terminal 12 is installed in the female housing 14. Both the male housing 13 and the female housing 14 are insulating housings, isolating the internal cables and the jack terminal 11 and the pin terminal 12 from the outside.
[0053] There are multiple buckles 111 on the pin terminal 12 and the socket terminal 11 , and they are spaced apart around a first direction, wherein the first direction is the X direction in the drawing.
[0054] The end of the pin terminal 12 opposite to the socket terminal 11 is the plug-in end 112, that is, the end of the pin terminal 12 and the socket terminal 11 close to each other is the plug-in end 112; the plug-in ends 112 of the pin terminal 12 and the socket terminal 11 are plugged into each other, and the other ends of the pin terminal 12 and the socket terminal 11 are connected to the cable, for example, by crimping. The pin terminal 12 and the socket terminal 11 are both conductors, which conduct the two connected cables.
[0055] It can be understood that the terminal limiting structure 1311 can be provided in both the male housing 13 and the female housing 14 ; or, the terminal limiting structure 1311 can be provided in only one of the male housing 13 and the female housing 14 .
[0056] like Figure 6-7 As shown, taking the terminal limiting structure 1311 set in the male end housing 13 as an example, the terminal limiting structure 1311 set in the male end housing 13 is used to limit the socket terminal 11, the number of the first limiting protrusions 13111 and the second limiting protrusions 13112 are equal, and the second limiting protrusions 13112 of the terminal limiting structure 1311 are aligned with the gap between the two adjacent first limiting protrusions 13111.
[0057] The buckle 111 and the plug end 112 of the socket terminal 11 are arranged between the first limiting protrusion 13111 and the second limiting protrusion 13112 in the male end housing 13; the end of the buckle 111 opposite to the plug end 112 is limitedly matched with the first limiting protrusion 13111, the diameter of the circle where the inner wall of the first limiting protrusion 13111 is located is smaller than the diameter of the circle where the end of the buckle 111 opposite to the plug end 112 is located, the width direction of the buckle 111 is circumferential around the first direction, and the distance between two adjacent first limiting protrusions 13111 is smaller than the width of the buckle 111, so as to prevent the buckle 111 from falling out of the gap between the first limiting protrusions 13111. The second limiting protrusion 13112 is limited in cooperation with the plug-in end 112, and the inner diameter of the circle where the second limiting protrusion 13112 is located is smaller than the outer diameter of the plug-in end 112; the male end housing 13 limits the position of the socket terminal 11 in the first direction through the first limiting protrusion 13111 and the second limiting protrusion 13112, thereby ensuring the axial stability of the socket terminal 11.
[0058] Compared with the prior art, in the present application, multiple first limiting protrusions 13111 and multiple second limiting protrusions 13112 are staggered in a first direction; the gap between two adjacent first limiting protrusions 13111 is aligned with a second limiting protrusion 13112, and the gap between two adjacent second limiting protrusions 13112 is aligned with the first limiting protrusion 13111; in the production process of the male end shell 13 or the female end shell 14, when the insert is withdrawn from the male end shell 13 or the female end shell 14, one molding insert of the injection mold can be withdrawn from the gap between two adjacent first limiting protrusions 13111, and the other molding insert can be withdrawn from the opposite gap. The insert can be withdrawn from the gap between the two adjacent second limiting protrusions 13112. Compared with the structure of the retracted slider, the embodiment of the present application can directly enter and exit from the first limiting protrusion 13111 and the second limiting protrusion 13112 before and after the male end shell 13 or the female end shell 14 is formed, without setting a hollow structure and a slider to change the diameter of the insert; the insert can be set as a solid whole, which is simple to process, lower in cost and high in strength; when the insert is withdrawn, it does not interfere with the first limiting protrusion 13111 and the second limiting protrusion 13112, and does not need to be forcibly removed. The insert and the first limiting protrusion 13111 and the second limiting protrusion 13112 are not easily damaged, thereby ensuring product quality.
[0059] In some embodiments of the present application, Figure 5-7 As shown, the terminal limiting structure 1311 also includes a plurality of third limiting protrusions 13113 arranged at intervals around the first direction, the third limiting protrusions 13113 extend along the first direction, the third limiting protrusions 13113 are connected to the second limiting protrusions 13112 and are arranged at intervals with the first limiting protrusions 13111; the third limiting protrusions 13113 are limitedly matched with the outer wall surface of the pin terminal 12 or the socket terminal 11.
[0060] It can be understood that the third limiting protrusion 13113 can be provided in both the male housing 13 and the female housing 14; or, the third limiting protrusion 13113 can be provided in only one of the male housing 13 and the female housing 14.
[0061] like Figure 6-7 As shown, taking the third limiting protrusion 13113 set in the male end housing 13 as an example, the number of the third limiting protrusion 13113 and the second limiting protrusion 13112 is equal, the third limiting protrusion 13113 is set between the first limiting protrusion 13111 and the second limiting protrusion 13112 and extends from one end of the second limiting protrusion 13112 to the first limiting protrusion 13111, the third limiting protrusion 13113 is connected to the second limiting protrusion 13112 and is arranged at intervals with the first limiting protrusion 13111; in the circumferential direction around the first direction, the third limiting protrusion 13113 and the first limiting protrusion 13111 are staggered, and the third limiting protrusion 13113 is aligned with the gap between two adjacent first limiting protrusions 13111. The third limiting protrusion 13113 is used to limit the radial movement of the socket terminal 11 , and the inner diameter of the circle surrounded by the third limiting protrusion 13113 is greater than or equal to the outer diameter of the socket terminal 11 .
[0062] The third limiting protrusion 13113 radially limits the pin terminal 12 or the socket terminal 11, so that the pin terminal 12 (or the socket terminal 11) is more stable in the female housing 14 (or the male housing 13). In the existing photovoltaic connector 10, the third limiting protrusion 13113 and the first limiting protrusion 13111 are complete rings, and there is an annular groove between the third limiting protrusion 13113 and the first limiting protrusion 13111.
[0063] Compared with the prior art, in the production process of the male end shell 13 or the female end shell 14 of the embodiment of the present application, when the insert is withdrawn from the male end shell 13 or the female end shell 14, one molded insert can be withdrawn from the gap between adjacent first limiting protrusions 13111, and the other molded insert can be withdrawn from the gap between adjacent third limiting protrusions 13113. Before and after the groove is formed, the insert can directly enter and exit between the first limiting protrusion 13111 and the third limiting protrusion 13113, and the insert does not need to change its diameter at the groove; the insert can be set as a solid whole, which is simple to process, lower cost and high strength; when the insert is withdrawn, it does not interfere with the first limiting protrusion 13111 and the third limiting protrusion 13113, thereby avoiding damage to the groove and ensuring product quality.
[0064] In some embodiments of the present application, Figure 2 , Figure 8 and Fig. 9As shown, at least one of the male end housing 13 and the female end housing 14 includes an insulating body 131, a waterproof ring 132 and a sealing cover 133; a baffle 1312 is provided on the inner wall surface of the insulating body 131, the sealing cover 133 is connected to the insulating body 131, and the waterproof ring 132 is placed in the insulating body 131; in the first direction, one side of the waterproof ring 132 abuts against the baffle 1312, and the other side of the waterproof ring 132 abuts against the inner wall surface of the sealing cover 133.
[0065] A waterproof sealing structure needs to be set between the insulating body 131 and the cable to avoid leakage. It can be understood that both the male shell 13 and the female shell 14 can include an insulating body 131, a waterproof ring 132 and a sealing cover 133 structure; or, one of the male shell 13 and the female shell 14 can include an insulating body 131, a waterproof ring 132 and a sealing cover 133 structure.
[0066] like Figure 2 and Fig. 9 As shown, taking the structure of an insulating body 131, a waterproof ring 132 and a sealing cover 133 arranged on the male end shell 13 as an example, the baffle 1312 and the sealing cover 133 are respectively arranged on both sides of the waterproof ring 132 and are respectively limited with the two ends of the waterproof ring 132, the baffle 1312 and the sealing cover 133 are used to limit the axial position of the waterproof ring 132, and the end of the baffle 1312 close to the waterproof ring 132 is provided with a rounded corner.
[0067] The baffle 1312 in the insulating body 131 can be set as an annular structure, a C-shaped structure or multiple fan-shaped structures around the first direction; the waterproof ring 132 can be composed of multiple sealing gaskets of a sheet structure, or can be set as a whole; the sealing cover 133 is open at one end opposite to the insulating body 131, and a through hole is opened at the other end; the sealing cover 133 can be screwed to the insulating body 131, or can be snap-connected to the insulating body 131.
[0068] Compared with the prior art, when wiring, the cable is passed through the through hole and through the waterproof ring 132 into the insulating body 131; when the sealing cover 133 of the embodiment of the present application is connected to the insulating body 131, the sealing cover 133 squeezes the end of the waterproof ring 132 opposite to it and presses the other end of the waterproof ring 132 on the stop 1312; the waterproof ring 132 is deformed after being squeezed axially, so that the waterproof ring 132 squeezes the outer wall surface of the cable and the inner wall surface of the insulating body 131 radially, so that the waterproof ring 132 and the cable, and the waterproof ring 132 and the insulating body 131 are sealed. The embodiment of the present application does not need to use claw parts to collect the waterproof ring 132, and the production and assembly efficiency is improved due to the reduction of parts.
[0069] In other embodiments of the present application, the end opposite to the insulating body 131 and the sealing cover 133 may be composed of a plurality of limit claws arranged at intervals around the first direction, the length direction of the limit claws is along the first direction, and the diameter of the circle where the outer wall surface of the limit claws is located is larger than the diameter of the sealing cover 133, so that when the sealing cover 133 is connected to the insulating body 131, the limit claws are radially squeezed, and then the waterproof ring 132 is radially squeezed to seal between the waterproof ring 132 and the cable.
[0070] In some embodiments of the present application, Figure 2 As shown, it also includes a sealing ring 15 arranged between the male end housing 13 and the female end housing 14. The sealing ring 15 can be sleeved on the male end housing 13. When the male end housing 13 and the female end housing 14 are plugged and connected, the male end housing 13 and the sealing ring 15 are inserted into the female end housing 14, and the sealing ring 15 realizes a waterproof function between the male end housing 13 and the female end housing 14.
[0071] In some embodiments of the present application, Figure 7-9 As shown, the insulating body 131 has a first inner conical surface 1313 , the diameter of which gradually increases along the direction from the stopper 1312 to the sealing cover 133 , and the waterproof ring 132 has a first outer conical surface 1321 adapted to the first inner conical surface 1313 .
[0072] It can be understood that the first inner conical surface 1313 can be provided on both the male housing 13 and the female housing 14 ; or, the first inner conical surface 1313 can be provided on only one of the male housing 13 and the female housing 14 .
[0073] like Figure 7 , Fig. 9 and Fig.10 Taking the first inner cone 1313 and the first outer cone 1321 provided on the male end housing 13 as an example, the first inner cone 1313 is provided between the stopper 1312 and the sealing cover 133, and the axial direction of the first inner cone 1313 is along the first direction, the first inner cone 1313 is a bell-mouth-shaped structure, and the minimum diameter of the first inner cone 1313 is smaller than the minimum diameter of the first outer cone 1321; the first outer cone 1321 is located on the outer wall surface of the waterproof ring 132 and is provided close to the end of the waterproof ring 132 opposite to the stopper 1312, the axial direction of the first outer cone 1321 is along the first direction, and the diameter of the first outer cone 1321 gradually increases along the direction from the stopper 1312 to the sealing cover 133.
[0074] Compared with the prior art, in the embodiment of the present application, when the sealing cover 133 is connected to the insulating body 131, the sealing cover 133 squeezes the waterproof ring 132 to move toward the baffle 1312. After the waterproof ring 132 is squeezed by the sealing cover 133, a radial component force is generated between the first outer cone 1321 and the first inner cone 1313, so that the sealing effect between the waterproof ring 132 and the insulating body 131 is better, and at the same time, the inner wall of the waterproof ring 132 is radially squeezed against the cable, so that the position of the cable and the shell is relatively fixed, and the sealing effect is better; the first outer cone 1321 and the first inner cone 1313 increase the sealing contact area between the inner wall of the insulating body 131 and the outer wall of the waterproof ring 132, and also increase the sealing contact area between the outer wall of the cable and the inner wall of the waterproof ring 132, thereby improving the sealing effect.
[0075] In some embodiments of the present application, Figure 2 and Fig.10 As shown, the sealing cover 133 has a second inner conical surface, the diameter of which gradually decreases along the direction from the stopper 1312 to the sealing cover 133, and the waterproof ring 132 also has a second outer conical surface 1322 adapted to the second inner conical surface.
[0076] It can be understood that the second inner conical surface and the second outer conical surface 1322 can be provided on both the male housing 13 and the female housing 14, or the second inner conical surface and the second outer conical surface 1322 can be provided on one of the male housing 13 and the female housing 14.
[0077] The axes of the second inner cone and the second outer cone 1322 are both arranged along the first direction; the second inner cone is arranged at the end of the sealing cover 133 close to the waterproof ring 132, the minimum diameter of the second inner cone is smaller than the minimum diameter of the second outer cone 1322, the second outer cone 1322 is arranged at the end of the waterproof ring 132 close to the sealing cover 133, and the diameter of the second outer cone 1322 gradually decreases along the direction from the stop 1312 to the sealing cover 133. The second outer cone 1322 and the first outer cone 1321 can be connected together, or a spacing distance can be set between the second outer cone 1322 and the first outer cone 1321.
[0078] Compared with the prior art, when the sealing cover 133 of the embodiment of the present application is connected to the insulating body 131, the diameter change of the second inner cone makes the distance between the second inner cone of the sealing cover 133 and the second outer cone 1322 of the waterproof ring 132 gradually decrease. When the second inner cone is pressed on the second outer cone 1322, a radial component force is generated between the second inner cone and the second outer cone 1322. The sealing cover 133 directly squeezes the waterproof ring 132 in the radial direction to achieve the seal between the inner wall of the sealing cover 133 and the outer wall of the waterproof ring 132. The waterproof ring 132 squeezes the cable in the radial direction at the same time, so that the position of the cable, the sealing cover 133 and the insulating body 131 is relatively fixed; the sealing cover 133 and the insulating body 131 are respectively sealed and abutted against the waterproof ring 132 from both sides of the waterproof ring 132, so that both ends of the waterproof ring 132 can be stably sealed, thereby improving the sealing effect.
[0079] In some embodiments of the present application, the portions of the insulating body 131 of the male shell 13 and the female shell 14 between the first limiting protrusion 13111 and the sealing cover 133 are lengthened along the first direction, and the sealing cover 133 is lengthened, so that the distance between the pin terminal 12 (or the socket terminal 11) and the sealing cover 133 along the first direction is lengthened to meet the 1500V electrical clearance and creepage distance.
[0080] In some embodiments of the present application, Figure 2 , Figure 8 and Fig. 9 As shown, the sealing cover 133 is threadedly connected to the insulating body 131 .
[0081] It can be understood that the sealing covers 133 of the male housing 13 and the female housing 14 can both be threadedly connected to the insulating body 131 , or the sealing cover 133 of one of the male housing 13 and the female housing 14 can be threadedly connected to the insulating body 131 .
[0082] like Figure 2 and Fig. 9 As shown, taking the threaded connection between the sealing cover 133 of the male end housing 13 and the insulating body 131 as an example, an external thread 1314 is provided on the insulating body 131 near the end opposite to the sealing cover 133; an internal thread threadedly connected to the external thread 1314 is provided on the sealing cover 133, and a second inner conical surface on the sealing cover 133 is provided between the through hole of the sealing cover 133 and the internal thread.
[0083] Compared with the prior art, the sealing cover 133 of the embodiment of the present application is connected to the insulating body 131 via threads, and the purpose of closing and tightening the waterproof ring 132 is achieved through the rotation depth of the sealing cover 133 on the shell; at the same time, it is easy to disassemble and assemble the sealing cover 133.
[0084] In some embodiments of the present application, Figure 3As shown, the socket terminal 11 includes a spring sheet structure 113 , which includes a plurality of conductive sheets 1131 spaced apart and distributed around a first direction, and a tightening section is provided at a middle position of the spring sheet structure 113 in the first direction.
[0085] The diameter of the spring sheet structure 113 gradually increases from the contraction section to both ends; a gap 1132 is provided between two adjacent conductive sheets 1131 .
[0086] Compared with the prior art, the socket terminal 11 of the embodiment of the present application is in direct contact with the pin terminal 12, and the conductive spring in the middle is omitted, which saves the cost of parts and has a stronger current carrying capacity. Under the same rated current, it has a better temperature rise performance and reduces the safety risks caused by overheating of the connector. When the pin terminal 12 is connected to the socket terminal 11, the plug end 112 of the pin terminal 12 is inserted into the spring structure 113, and the contraction section is radially squeezed by the pin terminal 12, the diameter of the contraction section increases, and at the same time, the conductive sheet 1131 radially squeezes the pin terminal 12, so that the connection between the pin terminal 12 and the socket terminal 11 is more secure.
[0087] In some embodiments of the present application, Figure 3 As shown, the two ends of the conductive sheet 1131 are staggered.
[0088] It can be understood that one end of the spring structure 113 is twisted at a set angle relative to the other end.
[0089] Compared with the prior art, the staggered arrangement of the two ends of the conductive sheet 1131 can increase the length of the conductive sheet 1131, thereby increasing the contact area between the conductive sheet 1131 and the pin terminal 12, making the contact resistance between the pin terminal 12 and the socket terminal 11 smaller; the torsion of the conductive sheet 1131 can resist vibration and impact, and the contact stability is better.
[0090] In other embodiments of the present application, both ends of the conductive sheet 1131 are aligned.
[0091] In some embodiments of the present application, the pin terminal 12 includes a pin body and a buckle 111, and the socket terminal 11 includes a socket body and a buckle 111, and the buckle 111 is made of stainless steel; the pin body and the socket body are made of high-conductivity copper; the embodiment of the present application adopts a stamped terminal structure, the pin body and the stainless steel buckle 111 are integrally stamped and formed, and the socket body and the stainless steel buckle 111 are integrally stamped and formed, and the two are directly assembled in the mold without using molds to form them separately and then assembled; the mold cost, parts cost, assembly cost, and production efficiency are saved. In the embodiment of the present invention, the socket terminal 11 is made of high-conductivity copper material to meet the elastic plug-in life requirements.
[0092] In a second aspect, the present application also provides an insert assembly 20 for forming the terminal limiting structure 1311 in the photovoltaic connector 10 of the first aspect, such as Fig.11 As shown, it includes a first insert 21 and a second insert 22; Fig.14 As shown, the first insert 21 includes a first body 211, a plurality of first forming arms 212 and a plurality of first forming tables 213; the first body 211 is a rod-shaped structure extending along a first direction, and one end of the first body 211 is connected to the plurality of first forming arms 212 and the plurality of first forming tables 213; the plurality of first forming arms 212 and the plurality of first forming tables 213 are alternately arranged around the first direction; Fig.15 As shown, the second insert 22 includes a second main body 221, a plurality of second forming arms 222 and a plurality of second forming tables 223; the second main body 221 is a rod-shaped structure extending along the first direction, and one end of the second main body 221 is connected to the plurality of second forming arms 222 and the plurality of second forming tables 223; the plurality of second forming arms 222 and the plurality of second forming tables 223 are alternately arranged around the first direction; the first insert 21 and the second insert 22 are plug-fitted, and the first forming arms 212 and the second forming arms 222 are alternately arranged; the second forming arms 222 and the adjacent two first forming arms 212, the first forming tables 213, and the first main body 211 form a first groove 23, and the first groove 23 is used to form the first limiting protrusion 13111 of any one of the above-mentioned first aspects of the photovoltaic connector 10; the adjacent two second forming arms 222 and the second forming tables 223, the second main body 221, and the first forming arm 212 form a second groove 24, and the second groove 24 is used to form the second limiting protrusion 13112 of any one of the above-mentioned first aspects of the photovoltaic connector 10.
[0093] The insert assembly 20 that cooperates with the male end shell 13 is used to form the inner wall structure of the insulating body 131 of the male end shell 13; the insert assembly 20 that cooperates with the female end shell 14 is used to form the inner wall structure of the insulating body 131 of the female end shell 14; the inner wall structure includes a terminal limiting structure 1311.
[0094] Take the insert assembly 20 that cooperates with the male end housing 13 as an example. Fig.14 As shown, the first body 211 supports the first forming arm 212 and the first forming table 213; the length direction of the first forming arm 212 is arranged along the first direction, and the first forming arm 212 can be a rod-shaped structure or a plate-shaped structure; the length direction of the first forming table 213 is arranged along the first direction, and the two ends of the first forming table 213 along the width direction are connected to the two adjacent first forming arms 212, the length of the first forming table 213 is less than the length of the first forming arm 212, and the first forming table 213 is radially sunk between the two adjacent first forming arms 212 along the first direction; the first forming table 213 can be set as a plate-shaped structure or a block-shaped structure.
[0095] like Fig.15 As shown, the second body 221 supports the second forming arm 222 and the second forming table 223. The second forming arm 222 can be a rod-shaped structure or a plate-shaped structure. The length direction of the second forming arm 222 is set along the first direction; the length direction of the second forming table 223 is set along the first direction, and the two ends of the second forming table 223 along the width direction are connected to the two adjacent second forming arms 222. The length of the second forming table 223 is less than the length of the second forming arm 222, and the second forming table 223 is radially sunk between the two adjacent second forming arms 222 along the first direction; the first forming table 213 can be set to a plate-shaped structure or a block-shaped structure.
[0096] like Figure 11-13 As shown, when in use, the first insert 21 and the second insert 22 are inserted into each other, the first forming arm 212 is inserted between two adjacent second forming arms 222 and abuts against the first forming platform 213, and the second forming arm 222 is inserted between two adjacent first forming arms 212 and abuts against the second forming platform 223; the first insert 21 and the second insert 22 are inserted into each other to form a first groove 23 and a second groove 24.
[0097] The first groove 23 is used to form the first limiting protrusion 13111. The bottom end of the first groove 23 is the first forming platform 213. The four side walls of the first groove 23 are respectively the first body 211, the first forming arms 212 on both sides of the first forming platform 213, and the second forming arms 222 abutting against the first forming platform 213. The second groove 24 is used to form the second limiting protrusion 13112. The bottom end of the second groove 24 is the second forming platform 223. The four side walls of the second groove 24 are respectively the second body 221, the second forming arms 222 on both sides of the second forming platform 223, and the first forming arm 212 abutting against the second forming platform 223.
[0098] Compared with the prior art, when the insert assembly 20 is taken out of the embodiment of the present application, the first forming arm 212 is pulled out from between the adjacent first limiting protrusions 13111, and the second forming arm 222 is pulled out from between the adjacent second limiting protrusions 13112. Compared with the structure of the retracted slider, before and after the male end housing 13 or the female end housing 14 is formed, the first insert 21 and the second insert 22 can directly enter and exit from between the first limiting protrusion 13111 and the second limiting protrusion 13112, without setting a hollow structure and a slider to change the first The diameter of the insert 21 and the second insert 22; the first insert 21 and the second insert 22 can be set as a solid whole, which is simple to process, lower cost and high strength; the insert assembly 20 does not interfere with the first limiting protrusion 13111 and the second limiting protrusion 13112, and does not need to be forced off, which can reduce the interaction force between the insert assembly 20 and the first limiting protrusion 13111, the second limiting protrusion 13112, and the insert assembly 20 and the first limiting protrusion 13111, the second limiting protrusion 13112 are not easy to be damaged, thereby ensuring product quality.
[0099] In some embodiments of the present application, Fig.14 As shown, the first forming arm 212 includes a first forming section 2121 and a second forming section 2122; Figure 11-13 As shown, two adjacent first molding sections 2121 and the first molding platform 213, the first main body 211, and the second molding arm 222 form a first groove 23; the second molding section 2122 and the first molding section 2121, two adjacent second molding arms 222, and the second molding platform 223 form a third groove 25, and the third groove 25 is used to form the third limiting protrusion 13113 of any one of the photovoltaic connectors 10 of the first aspect mentioned above; the second molding section 2122 and the two adjacent second molding arms 222, the second molding platform 223, and the second main body 221 form a second groove 24.
[0100] Take the insert assembly 20 that cooperates with the male end housing 13 as an example. Fig.14 As shown, the length directions of the first molding section 2121 and the second molding section 2122 are both along the first direction, the first molding section 2121 is located between the second molding section 2122 and the first body 211, the first molding section 2121 and the second molding section 2122 can both be set as a plate-like structure, or can be set as a plate-like structure and a rod-like structure respectively; the first molding section 2121 and the second molding section 2122 are set in a stepped manner; the first molding platform 213 is connected to the first molding section 2121 at both ends along the width direction, and the first molding platform 213 is radially sunk between two adjacent first molding sections 2121 along the first direction.
[0101] like Figure 11-13As shown, the first insert 21 and the second insert 22 are inserted into each other to form a first groove 23, a second groove 24 and a third groove 25; the bottom end of the first groove 23 is a first forming platform 213, and the four side walls of the first groove 23 are respectively the first main body 211, the first forming sections 2121 on both sides of the first forming platform 213 and the second forming arms 222 abutting against the first forming platform 213; the bottom end of the second groove 24 is a second forming platform 223, and the four side walls of the second groove 24 are respectively the second main body 221, the second forming arms 222 on both sides of the second forming platform 223 and the second forming section 2122 abutting against the second forming platform 223; the bottom end of the third groove 25 is a second forming section 2122, and the four side walls of the third groove 25 are respectively the first forming section 2121, the second forming arms 222 on both sides of the second forming section 2122 and the second forming platform 223 abutting against the second forming section 2122.
[0102] Compared with the prior art, the embodiment of the present application arranges the third groove 25 formed by the first molding section 2121 and the second molding section 2122 to be connected with the second groove 24, so that the corresponding second limiting protrusion 13112 and the third limiting protrusion 13113 can be formed as one piece, and the second molding arm 222 can be pulled out from between the third limiting protrusion 13113, and the first insert 21 and the second insert 22 can directly enter and exit between the first limiting protrusion 13111 and the third limiting protrusion 13113 without changing the diameter between the first limiting protrusion 13111 and the third limiting protrusion 13113; the first insert 21 and the second insert 22 can be set as a solid whole, which is simple to process, lower in cost and high in strength; there is no interference between the insert assembly 20 and the third limiting protrusion 13113, and when the insert assembly 20 is pulled out, the groove formed by the first limiting protrusion 13111 and the third limiting protrusion 13113 is not easily damaged, thereby ensuring product quality.
[0103] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A photovoltaic connector, characterized in that: It comprises a pin terminal, a socket terminal, a male end housing and a female end housing; the pin terminal and the socket terminal are both provided with buckles, the opposite ends of the pin terminal and the socket terminal are plug-in ends, and the pin terminal and the socket terminal are plugged in along a first direction; at least one of the male end housing and the female end housing is provided with a terminal limiting structure; The terminal limiting structure includes a plurality of first limiting protrusions and a plurality of second limiting protrusions; the plurality of first limiting protrusions and the plurality of second limiting protrusions are arranged at intervals around the first direction, and the plurality of first limiting protrusions and the plurality of second limiting protrusions are arranged alternately; the first limiting protrusions cooperate with the buckle limiting, and the spacing distance between two adjacent first limiting protrusions is less than the width of the buckle; the plurality of second limiting protrusions cooperate with the plug-in end limiting.
2. The photovoltaic connector according to claim 1, characterized in that: The terminal limiting structure also includes a plurality of third limiting protrusions arranged at intervals around the first direction, the third limiting protrusions extending along the first direction, the third limiting protrusions connected to the second limiting protrusions and arranged at intervals with the first limiting protrusions; the third limiting protrusions are limitedly matched with the outer wall surface of the pin terminal or the socket terminal.
3. The photovoltaic connector according to claim 1, characterized in that: At least one of the male end shell and the female end shell includes an insulating body, a waterproof ring and a sealing cover; a baffle is provided on the inner wall surface of the insulating body, the sealing cover is connected to the insulating body, and the waterproof ring is placed inside the insulating body; in the first direction, one side of the waterproof ring abuts against the baffle, and the other side of the waterproof ring abuts against the inner wall surface of the sealing cover.
4. The photovoltaic connector according to claim 3, characterized in that: The insulating body has a first inner conical surface, the diameter of which gradually increases along the direction from the stop platform to the sealing cover, and the waterproof ring has a first outer conical surface adapted to the first inner conical surface.
5. The photovoltaic connector according to claim 4, characterized in that: The sealing cover has a second inner conical surface, the diameter of which gradually decreases along the direction from the stop platform to the sealing cover, and the waterproof ring also has a second outer conical surface matched with the second inner conical surface.
6. The photovoltaic connector according to claim 3, characterized in that: The sealing cover is threadedly connected to the insulating body.
7. The photovoltaic connector according to any one of claims 1 to 6, characterized in that: The socket terminal comprises a spring sheet structure, the spring sheet structure comprises a plurality of conductive sheets spaced apart and distributed around the first direction, and a tightening section is provided at a middle position of the spring sheet structure in the first direction.
8. The photovoltaic connector according to claim 7, characterized in that: The two ends of the conductive sheet are staggered.
9. An insert assembly, characterized in that: including a first insert and a second insert; The first insert comprises a first body, a plurality of first forming arms and a plurality of first forming tables; the first body is a rod-shaped structure extending along a first direction, one end of the first body is connected to the plurality of first forming arms and the plurality of first forming tables; the plurality of first forming arms and the plurality of first forming tables are alternately arranged around the first direction; The second insert comprises a second body, a plurality of second forming arms and a plurality of second forming tables; the second body is a rod-shaped structure extending along the first direction, one end of the second body is connected to the plurality of second forming arms and the plurality of second forming tables; the plurality of second forming arms and the plurality of second forming tables are alternately arranged around the first direction; The first insert and the second insert are plugged into each other, and the first molding arm and the second molding arm are arranged alternately; the second molding arm and the two adjacent first molding arms, the first molding table, and the first main body form a first groove, and the first groove is used to form the first limiting protrusion of the photovoltaic connector described in any one of claims 1-8; the two adjacent second molding arms and the second molding table, the second main body, and the first molding arm form a second groove, and the second groove is used to form the second limiting protrusion of the photovoltaic connector described in any one of claims 1-8.
10. The insert assembly according to claim 9, characterized in that The first forming arm includes a first forming section and a second forming section; two adjacent first forming sections and the first forming platform, the first main body, and the second forming arm form the first groove; the second forming section and the first forming section, two adjacent second forming arms, and the second forming platform form a third groove, and the third groove is used to form the third limiting protrusion of the photovoltaic connector described in claim 2; the second forming section and two adjacent second forming arms, the second forming platform, and the second main body form the second groove.