Photovoltaic branch connector

Abstract

The utility model relates to a photovoltaic branch line connector, which comprises a first line clamping device and a male end shell connected with the first line clamping device, the other end of the male end shell is clamped with a male end main body, a male end inner rubber core is clamped in the male end main body, and the orientation of a male terminal in the male end inner rubber core is opposite to the orientation of a first clamping block on the male end main body; the female end main body is provided with two groups of second clamping blocks and third clamping blocks in opposite directions, the second clamping blocks and the third clamping blocks are respectively used for clamping the male end main body and the female end shell, a female end inner rubber core is clamped and screwed in the female end shell, and the direction of a female terminal in the female end inner rubber core is the same as that of the second clamping blocks; and the second wire clamping device is connected with the female end shell. The length of the male and female end main bodies can be greatly shortened by changing the orientation of the clamping blocks on the male and female end main bodies under the condition of not changing the connection strength among the parts, so that the axial length of the whole branch connector is further reduced, and meanwhile, the female end inner rubber core and the female end main body adopt a dual connection form of clamping connection and screw connection, so that the connection stability is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic connector technology, and in particular to a photovoltaic branch connector. Background Technology

[0002] Photovoltaic branch connectors are electrical connection components used in photovoltaic systems to connect photovoltaic modules with combiner boxes, inverters, and other equipment. They typically consist of two parts: a male terminal and a female terminal. Both the male and female terminals contain metal contacts for electrical connection, while the outside is encapsulated with insulating material for insulation and protection. Some connectors are also equipped with locking devices to ensure the stability of the connection.

[0003] like Figure 1 The image shows a common photovoltaic branch connector. Its male end includes a housing, a wire clamping device, and a male body. The wire clamping device is located at one end of the male housing, and the male body is fixed to the other end of the male housing by a snap-fit ​​mechanism. An inner core containing multiple male terminals is embedded inside the male body, and this inner core also snaps into the male body. Its female end includes a housing, a wire clamping device, and a female body. The wire clamping device is located at one end of the female housing. Two sets of latches are arranged in the same direction on the outside of the female body. One set of latches in the middle is used to snap into the female housing, and the other set is used to connect to the male body. An inner core containing multiple female terminals is embedded inside the female body. To minimize the length of the female end, the inner core and the female body are no longer snap-fitted together. Instead, a connecting block 152 extends from the middle of the end of the female body furthest from the latches. This connecting block is used to fix the inner core with bolts. However, in actual use… During use, it is common to encounter situations where the connecting bolts between the inner core of the female connector and the main body of the female connector fall off. Moreover, the connection structure of a single bolt is not stable enough, which can easily affect the overall connection strength of the connector. At the same time, the orientation of the locking block on the male connector body for connecting with the male connector shell is consistent with the extension direction of the male terminal. It can be seen that the locking block protrudes outward from one end of the male connector body and extends in the direction of the male terminal to form an L-shaped structure 170. Although this L-shaped structure can enhance the support and stability of the male connector body after being inserted into the male connector shell, its main function is to act as a locking mechanism. Similarly, the locking block on the female connector body also protrudes outward from the middle of the female connector body and extends in the direction of the female terminal to form an L-shaped structure. However, these two L-shaped structures will increase the overall length of the male and female connector parts, thus affecting the length of the entire branch connector. They will encroach on the axial length of the entire electrical connection line, which will not only increase the difficulty of cable management, but may also lead to an increase in voltage drop in severe cases. Utility Model Content

[0004] The utility model discloses to solve the technical problems that the existing photovoltaic branch line connector is not stable in connection and has a long axial length due to unreasonable structure design.

[0005] To solve the above technical problems, the utility model provides a photovoltaic branch line connector, which comprises:

[0006] The first wire clamping device is connected to the male end shell;

[0007] The male end shell is connected to the first wire clamping device, and the other end of the male end shell is symmetrically provided with a group of first clamping holes;

[0008] The male end body comprises a first large end and a first small end, the first large end protrudes a group of symmetrically arranged first clamping blocks from one side of the first small end, the first clamping blocks are matched with the first clamping holes, a male end inner rubber core is clamped in the first small end, a plurality of male terminals are clamped in the male end inner rubber core, the heads of the male terminals protrude from the male end inner rubber core and are located in the first large end, and the protruding direction of the male terminals is opposite to the protruding direction of the first clamping blocks;

[0009] The female end body comprises a second large end, a second small end and a retaining ring, the second large end and the second small end are arranged on the two sides of the retaining ring respectively, the retaining ring protrudes a group of symmetrically arranged second clamping blocks from one side close to the second small end, the female end body is connected with the male end body through the second clamping blocks, the retaining ring protrudes a group of symmetrically arranged third clamping blocks from one side close to the second large end, the protruding direction of the third clamping blocks is opposite to that of the second clamping blocks, the protruding direction of the second clamping blocks is the same as that of the first clamping blocks, and the second large end is provided with a second clamping hole and a plurality of through holes;

[0010] The female end inner rubber core is embedded in the second large end, the female end inner rubber core is provided with fourth clamping blocks and a plurality of bolt holes outside, the fourth clamping blocks are matched with the second clamping holes, the plurality of bolt holes correspond to the plurality of through holes on the second large end one by one, a plurality of female terminals are clamped in the female end inner rubber core, the heads of the female terminals protrude from the female end inner rubber core and are located in the second small end, and the protruding direction of the female terminals is the same as that of the second clamping blocks;

[0011] The female end shell is symmetrically provided with a group of third clamping holes at one end, and the third clamping holes are matched with the third clamping blocks;

[0012] The second wire clamping device is connected to the end of the female end shell away from the third clamping holes.

[0013] In one embodiment of the utility model, one end of the first big end away from the first clamping block is provided with a group of symmetrically arranged fourth clamping holes, and the fourth clamping holes are matched with the second clamping block.

[0014] In one embodiment of the utility model, the male end shell is sleeved with the first small end, the first big end is sleeved with the second small end, and the female end shell is sleeved with the second big end.

[0015] In one embodiment of the utility model, the first small end, the second small end and the second big end are all externally provided with sealing rings.

[0016] In one embodiment of the utility model, the fifth clamping block is arranged on the outer part of the male end rubber core, the first small end is provided with a fifth clamping hole, and the fifth clamping block is matched with the fifth clamping hole.

[0017] In one embodiment of the utility model, the first wire clamping device comprises a first wire locking nut, a first wire clamp and a first sealing plug, one end of the first sealing plug is arranged in the end of the male end shell away from the first clamping hole, the first sealing plug is in abutment with the inner wall of the male end shell, the first wire clamp is sleeved with the end of the first sealing plug away from the male end shell, and the first wire locking nut is sleeved with the first wire clamp and connected with the male end shell.

[0018] In one embodiment of the utility model, the first wire clamp is engaged with the male end shell.

[0019] In one embodiment of the utility model, the second wire clamping device comprises a second wire locking nut, a second wire clamp and a second sealing plug, one end of the second sealing plug is arranged in the end of the female end shell away from the third clamping hole, the second sealing plug is in abutment with the inner wall of the female end shell, the second wire clamp is sleeved with the end of the second sealing plug away from the female end shell, and the second locking nut is sleeved with the second wire clamp and connected with the female end shell.

[0020] In one embodiment of the utility model, the second wire clamp is engaged with the female end shell.

[0021] The above technical scheme of the utility model has the following advantages compared with the prior art.

[0022] The photovoltaic branch line connector has the advantages that compared with common connectors, the extending directions of the first clamping block on the male end body and the third clamping block on the female end body are opposite to the extending directions of the male terminal and the female terminal respectively, the length of the male end body and the female end body can be greatly shortened without changing the connecting strength between the male end shell, the male end body, the female end body and the female end shell, the axial length of the whole branch line connector is reduced, meanwhile, the female end inner rubber core and the female end body are connected through clamping and screwing, and the connecting stability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to make the content of the utility model more easily understood clearly, the utility model is further explained in detail below according to the specific embodiment of the utility model and combining with the drawings, wherein

[0024] Figure 1 It is the partial explosion schematic view of common photovoltaic branch line connector;

[0025] Figure 2 It is the partial explosion schematic view of the utility model photovoltaic branch line connector;

[0026] Figure 3 It is Figure 2 It is the explosion schematic view of the male end part in the photovoltaic branch line connector shown in the figure;

[0027] Figure 4 It is Figure 2 It is the explosion schematic view of the female end part in the photovoltaic branch line connector shown in the figure;

[0028] Figure 5 It is Figure 2 It is the connection schematic view of the female end body and the female end inner rubber core in the photovoltaic branch line connector shown in the figure.

[0029] Explanation of reference numerals in the accompanying drawings: 110, Male terminal shell of a common photovoltaic branch connector; 120, Male terminal body of a common photovoltaic branch connector; 130, Inner core of a common photovoltaic branch connector; 131, Male terminal of a common photovoltaic branch connector; 140, Female terminal shell of a common photovoltaic branch connector; 150, Female terminal body of a common photovoltaic branch connector; 151, Two sets of locking blocks of a common photovoltaic branch connector; 152, Connecting block; 160, Inner core of a common photovoltaic branch connector; 161, Female terminal of a common photovoltaic branch connector; 170, L-shaped structure; 2, First wire clamping device; 210, First locking nut; 220, First wire clamp; 230, First sealing plug; 3, Male terminal. 310. Outer shell; 4. Male end body; 410. First large end; 411. Fourth locking hole; 420. First small end; 421. Fifth locking hole; 430. First locking block; 440. Male end inner core; 441. Fifth locking block; 450. Male terminal; 5. Female end body; 510. Second large end; 511. Second locking hole; 512. Through hole; 520. Second small end; 530. Retaining ring; 540. Second locking block; 550. Third locking block; 6. Female end inner core; 610. Fourth locking block; 620. Bolt hole; 630. Female terminal; 7. Female end outer shell; 710. Third locking hole; 8. Second wire clamping device; 810. Second wire locking nut; 820. Second wire clamp; 830. Second sealing plug; 9. Sealing ring. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0031] Reference Figures 2 to 5 As shown, this utility model provides a photovoltaic branch connector, comprising:

[0032] First clamping device 2;

[0033] The male end housing 3 has one end connected to the first wire clamping device 2, and the other end of the male end housing 3 is symmetrically provided with a set of first locking holes 310.

[0034] The male end body 4 includes a first large end 410 and a first small end 420. A set of symmetrically arranged first locking blocks 430 extend from the side of the first large end 410 toward the first small end 420. The first locking blocks 430 are adapted to the first locking hole 310. The male end inner core 440 is locked inside the first small end 420. Multiple male terminals 450 are locked inside the male end inner core 440. The head of the male terminal 450 extends out of the male end inner core 440 and is located inside the first large end 410. The extension direction of the male terminal 450 is opposite to the extension direction of the first locking block 430.

[0035] The female end body 5 includes a second large end 510, a second small end 520, and a retaining ring 530. The second large end 510 and the second small end 520 are respectively arranged on two sides of the retaining ring 530. A set of symmetrically arranged second clamping blocks 540 are arranged on the side of the retaining ring 530 close to the second small end 520. The female end body 5 is connected with the male end body 4 through the second clamping blocks 540. A set of symmetrically arranged third clamping blocks 550 are arranged on the side of the retaining ring 530 close to the second large end 510. The extending direction of the third clamping blocks 550 is opposite to that of the second clamping blocks 540. The extending direction of the second clamping blocks 540 is the same as that of the first clamping blocks 430. A second clamping hole 511 and a plurality of through holes 512 are arranged on the second large end 510.

[0036] The female end inner rubber core 6 is embedded in the second large end 510. The female end inner rubber core 6 is externally provided with fourth clamping blocks 610 and a plurality of bolt holes 620. The fourth clamping blocks 610 are matched with the second clamping hole 511. The plurality of bolt holes 620 correspond one-to-one with the plurality of through holes 512 on the second large end 510. A plurality of female end terminals 630 are clamped in the female end inner rubber core 6. The heads of the female end terminals 630 extend out of the female end inner rubber core 6 and are located in the second small end 520. The extending direction of the female end terminals 630 is the same as that of the second clamping blocks 540.

[0037] The female end outer shell 7 is symmetrically provided with a set of third clamping holes 710 on one end. The third clamping holes 710 are matched with the third clamping blocks 550.

[0038] The second wire clamping device 8 is connected to the end of the female end outer shell 7 away from the third clamping holes 710.

[0039] Compared with common connectors, the photovoltaic branch line connector changes the extending directions of the clamping blocks on the male end body 4 and the female end body 5. The extending direction of the first clamping blocks 430 on the male end body 4 is opposite to that of the male end terminals 450. The extending direction of the third clamping blocks 550 on the female end body 5 is opposite to that of the female end terminals 630. Without changing the connection strength between the male end outer shell 3, the male end body 4, the female end body 5, and the female end outer shell 7, the length of the male and female end bodies 5 can be greatly shortened, thereby reducing the axial length of the entire branch line connector. Meanwhile, the female end inner rubber core 6 and the female end body 5 adopt a double connection mode of clamping and screwing, thereby enhancing the connection stability.

[0040] Specifically, from the outside, the connection sequence of the entire photovoltaic branch connector is: the first wire clamping device 2, the male end shell 3, the male end body 4, the female end body 5, the female end shell 7 and the second wire clamping device 8; the end of the first clamping block 430 in the extension direction is a right angle structure, and the inclined surface of the right angle structure faces the male end shell 3; after the male terminal 450 is inserted into the male end inner rubber core 440 in turn, the male end inner rubber core 440 is clamped into the small end of the male end body 4; the second large end 510, the second small end 520 and the stop ring 530 are integrally formed, the end of the second clamping block 540 in the extension direction is also a right angle structure and the inclined surface of the right angle structure faces the male end body 4, and the end of the third clamping block 550 in the extension direction is also a right angle structure and the inclined surface of the right angle structure faces the female end body 5; after the female terminal 630 is inserted into the female end inner rubber core 6 in turn, the female end inner rubber core 6 is first clamped with the female end body 5 by the fourth clamping block 610, and then is fastened by the nail screw, thereby effectively realizing the locking of the female end inner rubber core 6 and the female end body 5; all clamping holes are arranged at appropriate positions to ensure seamless clamping of each component.

[0041] Further, by changing the extension direction of the clamping block, the axial length of the entire photovoltaic connector can be effectively shortened, thereby having sufficient space to realize the double connection of the female end inner rubber core 6 and the female end body 5, and simultaneously reducing the connection space occupied by each component, thereby improving the internal accommodation space and holding space of the connector.

[0042] Further, the first large end 410 is provided with a group of symmetrically arranged fourth clamping holes 411 at the end away from the first clamping block 430, and the fourth clamping holes 411 are adapted to the second clamping block 540.

[0043] Specifically, the fourth clamping holes 411 are used for clamping the second clamping block 540 on the female end body 5.

[0044] Further, the male end shell 3 is sleeved with the first small end 420, the first large end 410 is sleeved with the second small end 520, the female end shell 7 is sleeved with the second large end 510, and the outer portions of the first small end 420, the second small end 520 and the second large end 510 are all provided with sealing rings 9.

[0045] Specifically, the sealing rings 9 arranged on each plug-in part can ensure the sealing property of the entire connector.

[0046] Further, the outer portion of the male end inner rubber core 440 is provided with a fifth clamping block 441, the first small end 420 is provided with a fifth clamping hole 421, and the fifth clamping block 441 is adapted to the fifth clamping hole 421.

[0047] Specifically, after the male terminal 450 is inserted into the male end inner rubber core 440 in turn, the male end inner rubber core 440 is clamped with the male end body 4 by the fifth clamping block 441, thereby effectively realizing the locking of the male end inner rubber core 440 and the male end body 4.

[0048] Further, the first wire clamping device 2 comprises a first wire locking nut 210, a first wire clamp 220 and a first sealing plug 230, one end of the first sealing plug 230 is arranged in the male end shell 3 away from the first clamping hole 310, and the first sealing plug 230 is in abutment with the inner wall of the male end shell 3, the first wire clamp 220 is sleeved on the end of the first sealing plug 230 away from the male end shell 3, the first wire locking nut 210 is sleeved on the first wire clamp 220 and connected with the male end shell 3, and the first wire clamp 220 is engaged with the male end shell 3.

[0049] Specifically, one end of the first sealing plug 230 is provided with a circular ring structure for abutting with the male end shell 3, the inside is threaded, and is clamped by the combined action of the first wire clamp 220 and the first wire locking nut 210.

[0050] Further, the second wire clamping device 8 comprises a second wire locking nut 810, a second wire clamp 820 and a second sealing plug 830, one end of the second sealing plug 830 is arranged in the female end shell 7 away from the third clamping hole 710, and the second sealing plug 830 is in abutment with the inner wall of the female end shell 7, the second wire clamp 820 is sleeved on the end of the second sealing plug 830 away from the female end shell 7, the second wire locking nut 810 is sleeved on the second wire clamp 820 and connected with the female end shell 7, and the second wire clamp 820 is engaged with the female end shell 7.

[0051] Specifically, one end of the second sealing plug 830 is also provided with a circular ring structure for abutting with the female end shell 7, the inside is threaded, and is clamped by the combined action of the second wire clamp 820 and the second wire locking nut 810.

[0052] Obviously, the above embodiments are only examples for clear illustration, and are not limited to the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A photovoltaic branch connector, characterized in that, include: First clamping device; The male end housing has one end connected to the first wire clamping device, and the other end of the male end housing is symmetrically provided with a set of first locking holes. The male end body includes a first large end and a first small end. A set of symmetrically arranged first locking blocks extend from the first large end toward the first small end. The first locking blocks are adapted to the first locking holes. A male end inner core is locked inside the first small end. Multiple male terminals are locked inside the male end inner core. The heads of the male terminals extend out of the male end inner core and are located inside the first large end. The extension direction of the male terminals is opposite to the extension direction of the first locking blocks. The female end body includes a second large end, a second small end, and a retaining ring. The second large end and the second small end are respectively disposed on both sides of the retaining ring. A set of symmetrically arranged second locking blocks extend from the side of the retaining ring near the second small end. The female end body is connected to the male end body through the second locking blocks. A set of symmetrically arranged third locking blocks extend from the side of the retaining ring near the second large end. The third locking blocks extend in the opposite direction to the second locking blocks, and the second locking blocks extend in the same direction as the first locking blocks. The second large end is provided with a second locking hole and multiple through holes. The female end inner core is embedded in the second large end. The female end inner core is provided with a fourth locking block and multiple bolt holes on its outside. The fourth locking block is adapted to the second locking hole. The multiple bolt holes correspond one-to-one with the multiple through holes on the second large end. Multiple female terminals are locked in the female end inner core. The head of the female terminal extends out of the female end inner core and is located in the second small end. The extension direction of the female terminal is the same as the extension direction of the second locking block. The female end shell has a set of third locking holes symmetrically arranged on one end, and the third locking holes are adapted to the third locking block; The second clamping device is connected to the end of the female end housing that is away from the third clamping hole.

2. The photovoltaic branch connector according to claim 1, characterized in that: The first large end, away from the first card block, is provided with a set of symmetrically arranged fourth card holes, which are adapted to the second card block.

3. The photovoltaic branch connector according to claim 2, characterized in that: The male end shell is fitted onto the first small end, the first large end is fitted onto the second small end, and the female end shell is fitted onto the second large end.

4. The photovoltaic branch connector according to claim 3, characterized in that: A sealing ring is provided on the outside of the first small end, the second small end, and the second large end.

5. The photovoltaic branch connector according to claim 1, characterized in that: The male end has a fifth locking block on its outer side, and the first small end has a fifth locking hole. The fifth locking block is adapted to the fifth locking hole.

6. The photovoltaic branch connector according to claim 1, characterized in that: The first wire clamping device includes a first locking nut, a first wire clamp, and a first sealing plug. One end of the first sealing plug passes through the end of the male end housing away from the first locking hole, and the first sealing plug abuts against the inner wall of the male end housing. The first wire clamp is sleeved on the end of the first sealing plug away from the male end housing, and the first locking nut is sleeved on the first wire clamp and connected to the male end housing.

7. The photovoltaic branch connector according to claim 6, characterized in that: The first clamp engages with the male end housing.

8. The photovoltaic branch connector according to claim 6, characterized in that: The second wire clamping device includes a second locking nut, a second wire clamp, and a second sealing plug. One end of the second sealing plug passes through the end of the female end housing away from the third locking hole, and the second sealing plug abuts against the inner wall of the female end housing. The second wire clamp is sleeved on the end of the second sealing plug away from the female end housing, and the second locking nut is sleeved on the second wire clamp and connected to the female end housing.

9. The photovoltaic branch connector according to claim 8, characterized in that: The second clamp engages with the female end housing.

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