Branch connector

Abstract

The invention relates to the technical field of photovoltaic connectors, and particularly discloses a branch connector which comprises a base, a terminal, a main cable and a plurality of branch cables. The base is provided with an accommodating cavity for filling colloid, and the bottom wall of the accommodating cavity is provided with a terminal positioning column; the terminal comprises a fixing plate and a cable connecting part connected with the fixing plate, the fixing plate is provided with a positioning hole, and the positioning hole is connected with the terminal positioning column; the cable core of the main cable is electrically connected with the cable cores of the plurality of branch cables, and the cable connecting part is wound and riveted at the joint of the main cable and the plurality of branch cables. According to the terminal of the branch connector, a plurality of cables are connected together through one cable connecting part, the overall size of the branch connector is reduced, the production cost is reduced, the tensile capacity is high, and the stability of cable connection is improved.

Description

Technical Field

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

[0002] In the photovoltaic industry, branch connectors have always played an important role. From the initial "one-out-two" structure that can connect two components in parallel to a main line, it has gradually developed to today's products that can achieve "one-out-N" for convenient connection.

[0003] In the traditional branch connector structure, the terminal is generally provided with the same number of branch connection parts as the branch cables to fix the branch cables, which makes the overall volume of the product larger, and also increases the volume of glue filling and the material used for the product, which leads to higher production costs to a certain extent. In addition, the cable and the terminal are generally connected by mechanical connection. When the cable is affected by external tension, it is easy to make the cable connection loose or disconnected, which leads to unstable or failed cable connection.

[0004] Therefore, it is urgent to propose a branch connector to solve the above technical problems. Summary of the invention

[0005] The present invention provides a branch connector, the terminals of which connect multiple cables together through a cable connecting part, thereby reducing the overall volume of the branch connector, reducing the production cost to a certain extent, and having strong tensile strength, thereby improving the stability of the cable connection.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] Branch connector, including:

[0008] A base, wherein the base is provided with a receiving cavity for filling a colloid, and a terminal positioning column is provided on the bottom wall of the receiving cavity;

[0009] The terminal comprises a fixing plate and a cable connecting portion connected to the fixing plate, wherein the fixing plate is provided with a positioning hole, and the positioning hole is connected to the terminal positioning column;

[0010] A main cable and a plurality of branch cables, the wire core of the main cable and the wire cores of the plurality of branch cables are electrically connected together, and the cable connecting portion is wound and riveted at the joint between the main cable and the plurality of branch cables.

[0011] Optionally, a cable positioning column is further provided on the bottom wall of the accommodating cavity, and the branch cables are arranged in a one-to-one correspondence with the cable positioning column. The wire core of the branch cable connected to the main cable has a bending portion that cooperates with the cable positioning column, and the bending portion is pressed against the cable positioning column when the branch cable is pulled.

[0012] Optionally, the terminal positioning column is inserted into the positioning hole; and / or the terminal positioning column is inserted into the positioning hole and riveted to the fixing plate.

[0013] Optionally, the main cable and the cores of the plurality of branch cables are integrated through a welding process.

[0014] Optionally, the branch connector further comprises a wire crimping buckle, wherein the wire crimping buckle cover is arranged at the opening of the accommodating cavity, and a main wire crimping wall and a partial wire crimping wall are respectively arranged at both ends of the wire crimping buckle, the main wire crimping wall is provided with a first main wire crimping groove, and the partial wire crimping wall is provided with a first partial wire crimping groove corresponding to the branch cable one by one, and the base is provided with a second main wire crimping groove corresponding to the first main wire crimping groove, and a second partial wire crimping groove corresponding to the first partial wire crimping groove one by one, the first main wire crimping groove and the second main wire crimping groove form a closed main wire crimping hole for fixing the main cable, and the first partial wire crimping groove and the second partial wire crimping groove form a closed partial wire crimping hole for fixing the branch cable;

[0015] Two circular first limiting convex ribs are arranged at intervals on the inner circumferential wall of the main wire pressing hole, the first limiting convex ribs are interference fit with the main cable, each of the first limiting convex ribs is provided with a plurality of first limiting protrusions, the first limiting protrusions are interference fit with the main cable, and the plurality of first limiting protrusions on the two first limiting convex ribs are staggered;

[0016] And / or, two circular second limiting ribs are arranged at intervals on the inner wall of the voltage dividing line hole, the second limiting ribs are interference fit with the branch cable, each of the second limiting ribs is provided with a plurality of second limiting protrusions, the second limiting protrusions are interference fit with the branch cable, and the plurality of second limiting protrusions on the two second limiting ribs are staggered.

[0017] Optionally, the branch connector also includes a wire buckle, the wire buckle cover is arranged at the opening of the accommodating cavity, and the main cable and the branch cable are clamped between the wire buckle and the base; on the base, a welding surface is arranged around the outer edge of the opening of the accommodating cavity, and a welding rib is arranged on the welding surface, and the wire buckle is provided with a welding protrusion matching the welding surface, and the bottom surface of the welding protrusion is welded to the welding rib.

[0018] Optionally, on the base, a first inner step structure is provided on the outer periphery of the welding surface, the wire buckle forms a first outer step structure on the outer periphery of the welding rib, and the first outer step structure is gap-matched with the first inner step structure.

[0019] Optionally, the branch connector also includes a wire buckle, and the wire buckle cover is arranged at the opening of the accommodating cavity, and the main cable and the branch cable are clamped between the wire buckle and the base; a glue filling port is provided in the middle part of the wire buckle, and a box cover is provided at the glue filling port, and a first protrusion is provided on the side of the box cover facing the accommodating cavity.

[0020] Optionally, a second protrusion is provided on the bottom wall of the accommodating cavity.

[0021] Optionally, an annular groove is provided on the wire buckle at the outer edge of the glue filling port, the annular groove and the glue filling port form a second inner step structure, and a second outer step structure is provided on the box cover, and the second outer step structure is gap-matched with the second inner step structure.

[0022] Optionally, buckles are provided on two opposite side walls of the glue filling port, and slots corresponding to the buckles are provided at two opposite ends of the box cover, and the slots are engaged with the corresponding buckles.

[0023] The beneficial effects of the present invention are:

[0024] The present invention provides a branch connector, comprising a base, a terminal, a main cable and a plurality of branch cables. A terminal positioning column connected to a fixing plate of the terminal is provided on the base. When the main cable or the branch cable is subjected to tension, the terminal positioning column will support the terminal to limit the movement of the terminal, thereby improving the anti-pull function of the main cable and the branch cable to a certain extent. That is, by setting the cooperation between the terminal positioning column and the terminal, the tensile strength of the branch connector is improved, so that the risk of loosening or disconnection between the main cable and the branch cable is low, thereby making the stability of the cable connection higher.

[0025] In addition, the main cable and multiple branch cables are fixed together by the cable connecting part on the terminal. Compared with the solution in the prior art that a branch connecting part is set on the terminal corresponding to each branch cable, the structure is simpler, the installation is more convenient, and the overall structure is more compact, which not only reduces the overall size of the branch connector, but also saves production costs to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A top view of a branch connector provided by an embodiment of the present invention with the wire buckle and the box cover hidden;

[0027] Figure 2 A top view of another branch connector provided by an embodiment of the present invention with the wire buckle and the box cover hidden;

[0028] Figure 3 A schematic diagram of the structure of a base provided in an embodiment of the present invention;

[0029] Figure 4 An assembly diagram of a terminal, a main cable and two branch cables provided in an embodiment of the present invention;

[0030] Figure 5 A schematic diagram of the structure of a terminal provided by an embodiment of the present invention;

[0031] Figure 6 A schematic diagram of a main cable and two branch cables provided in an embodiment of the present invention when not assembled with terminals;

[0032] Figure 7 A cross-sectional view of a branch connector provided by an embodiment of the present invention Figure 1 ;

[0033] Figure 8 for Figure 7 A magnified view at point A;

[0034] Fig. 9 An exploded schematic diagram of a branch connector provided by an embodiment of the present invention;

[0035] Fig.10 A schematic diagram of the structure of a branch connector provided by an embodiment of the present invention;

[0036] Fig.11 A side view of a branch connector provided by an embodiment of the present invention with the branch cable hidden;

[0037] Fig.12 for Figure 3 Enlarged view at B;

[0038] Fig.13 A schematic diagram of a main cable provided for an embodiment of the present invention (showing bite marks);

[0039] Fig.14 for Fig.13 Cross-sectional view at CC;

[0040] Fig.15 for Fig.13 Sectional view at DD;

[0041] Fig.16 A top view of a branch connector provided by an embodiment of the present invention (the box cover is not shown);

[0042] Fig.17 A cross-sectional view of a branch connector provided by an embodiment of the present invention Figure 2 ;

[0043] Fig.18 for Fig.17 Enlarged view at E;

[0044] Fig.19 for Fig.17 Enlarged view at F.

[0045] In the figure:

[0046] 100, base; 110, accommodating cavity; 111, welding surface; 1111, welding rib; 112, first inner step structure; 113, second convex portion; 120, terminal positioning column; 130, cable positioning column; 140, second main pressure wire groove; 150, second partial pressure wire groove;

[0047] 200, terminal; 210, fixing plate; 211, positioning hole; 220, cable connection part;

[0048] 300, main cable;

[0049] 400, branch cable; 410, bending portion;

[0050] 500, crimping buckle; 510, main crimping wall; 520, partial crimping wall; 530, welding protrusion; 540, first outer step structure; 550, glue injection port; 560, annular groove; 570, second inner step structure; 580, buckle;

[0051] 600, main pressing hole; 610, first limiting rib; 611, first limiting protrusion;

[0052] 700, voltage dividing line hole; 710, second limiting convex rib; 711, second limiting protrusion;

[0053] 800, box cover; 810, first protrusion; 820, second outer step structure; 830, card slot. DETAILED DESCRIPTION

[0054] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0056] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0058] This embodiment provides a branch connector, the terminals of which connect multiple cables together through a cable connecting part, thereby reducing the overall volume of the branch connector, reducing the production cost to a certain extent, and having strong tensile strength, thereby improving the stability of the cable connection.

[0059] Specifically, Figure 1 , Figure 4-Figure 6As shown, the branch connector includes a base 100, a terminal 200, a main cable 300 and a plurality of branch cables 400. The base 100 is provided with a receiving cavity 110 for filling a colloid, and a terminal positioning column 120 is provided on the bottom wall of the receiving cavity 110. The terminal 200 includes a fixing plate 210 and a cable connecting portion 220 connected to the fixing plate 210, and a positioning hole 211 is provided on the fixing plate 210, and the positioning hole 211 is connected to the terminal positioning column 120. The wire core of the main cable 300 and the wire core of the plurality of branch cables 400 are electrically connected together, and the cable connecting portion 220 is wound and riveted at the junction of the main cable 300 and the plurality of branch cables 400.

[0060] The branch connector provided in this embodiment improves the tensile strength of the branch connector by matching the terminal positioning column 120 provided on the base 100 with the positioning hole 211 on the terminal 200 that fixes the main cable 300 and the branch cable 400, so that the risk of loosening or disconnection between the main cable 300 and the branch cable 400 is low, thereby making the cable connection more stable. In addition, the main cable 300 and multiple branch cables 400 are fixed together by the cable connecting portion 220 on the terminal 200. Compared with the solution in the prior art that a branch connecting portion is provided on the terminal 200 corresponding to each branch cable 400, the structure is simpler, the installation is more convenient, and the overall structure is more compact, which not only reduces the overall size of the branch connector, but also saves production costs to a certain extent.

[0061] Furthermore, if Figure 2 and Figure 3 As shown, a cable positioning column 130 is also provided on the bottom wall of the accommodating cavity 110, and the branch cables 400 are arranged in a one-to-one correspondence with the cable positioning column 130. The wire core of the branch cable 400 connected to the main cable 300 has a bending portion 410 that cooperates with the cable positioning column 130, and the bending portion 410 is pressed against the cable positioning column 130 when the branch cable 400 is pulled.

[0062] by Figure 2 Taking the position shown as an example, when the main cable 300 is subjected to a rightward pulling force, the terminal positioning column 120 will support the terminal 200 to limit the movement of the terminal 200, thereby improving the anti-pull function of the main cable 300 to a certain extent. When the branch cable 400 is subjected to a leftward pulling force, the cable positioning column 130 will support the branch cable 400 to limit the movement of the branch cable 400, thereby improving the anti-pull function of the branch cable 400 to a certain extent.

[0063] Optionally, in one possible embodiment, two branch cables 400 are provided, and two cable positioning posts 130 are provided. In another possible embodiment, three or four branch cables 400 are provided, and three or four cable positioning posts 130 are provided accordingly.

[0064] Optionally, the cores of the main cable 300 and the plurality of branch cables 400 are integrated by welding.

[0065] Specifically, first connect the main cable 300 and the branch cable 400 Figure 6 The state shown is placed in Figure 5 The cable connecting part 220 is then wound to fasten the wire core of the main cable 300 and the wire core of the branch cable 400 together. At this time, the wire core of the main cable 300 and the wire core of the branch cable 400 are in close contact. Then, the wire core of the main cable 300 and the wire core of the branch cable 400 can be integrated and solidified by soldering process, so that a reliable electrical connection can be achieved between the main cable 300 and the branch cable 400.

[0066] The electrical connection between the main cable 300 and the branch cable 400 is achieved by riveting and welding. Compared with the solution of only using riveting or only using welding to achieve the electrical connection between the main cable 300 and the branch cable 400, the reliability of the electrical connection between the main cable 300 and the branch cable 400 is greatly improved.

[0067] Furthermore, if Figure 7 and Figure 8 As shown, in a possible embodiment, the terminal positioning column 120 is inserted into the positioning hole 211 and riveted to the fixing plate 210. Specifically, the terminal positioning column 120 can be inserted into the positioning hole 211 first, and then the terminal 200 is fixed between the positioning column and the base 100 by using a cold riveting process. In this way, the installation strength of the terminal 200 is improved.

[0068] Optionally, in another possible embodiment, only the terminal positioning column 120 may be arranged to be inserted into the positioning hole 211 . Such an arrangement can also achieve fixation of the terminal 200 , and the installation is simpler.

[0069] Optionally, the terminal 200 may be made of steel, which has higher strength and lower cost than the conventional terminal 200 made of copper.

[0070] Furthermore, if Figure 9-Figure 15 As shown, in a possible embodiment, the branch connector also includes a wire buckle 500, which is covered at the opening of the accommodating cavity 110. The wire buckle 500 and the base 100 work together to clamp and fix the main cable 300 and the branch cable 400.

[0071] Specifically, the two ends of the wire pressing buckle 500 are respectively provided with a main wire pressing wall 510 and a branch wire pressing wall 520, the main wire pressing wall 510 is provided with a first main wire pressing groove, and the branch wire pressing wall 520 is provided with a first branch wire pressing groove corresponding to the branch cable 400, and the base 100 is provided with a second main wire pressing groove 140 corresponding to the first main wire pressing groove, and a second branch wire pressing groove 150 corresponding to the first branch wire pressing groove, and the first main wire pressing groove and the second main wire pressing groove 140 are enclosed to form a closed main wire pressing hole 600 (such as Fig.10 As shown), the first voltage dividing wire groove and the second voltage dividing wire groove 150 form a closed voltage dividing wire hole 700 (as shown) for fixing the branch cable 400 Fig.11 shown).

[0072] In addition, two circular first limiting ribs 610 are arranged at intervals on the inner circumferential wall of the main pressure wire hole 600. The first limiting ribs 610 are interference fit with the main cable 300. Each first limiting rib 610 is provided with a plurality of first limiting protrusions 611. The first limiting protrusions 611 are interference fit with the main cable 300, and the plurality of first limiting protrusions 611 on the two first limiting ribs 610 are arranged in a staggered manner. The first limiting ribs 610 and the first limiting protrusions 611 can elastically seal the main cables 300 of different wire diameters within a certain range, and have high adaptability. In addition, as Fig.15 As shown, each first limiting rib 610 and the first limiting protrusion 611 on the first limiting rib 610 can form an annular bite mark with a depth of L1 and a dot-shaped bite mark with a depth of L2 on the main cable 300 after interference fit with the main cable 300, further improving the sealing performance between the main pressing hole 600 and the main cable 300. The first limiting protrusions 611 on the two first limiting ribs 610 are arranged in a staggered manner to avoid the concentration of deeper bite marks on the main cable 300, thereby reducing the risk of damage and rupture of the insulation layer of the main cable 300 when the bite mark is too deep.

[0073] Optionally, in this embodiment, two circular second limiting ribs 710 are arranged on the inner circumferential wall of the voltage dividing line hole 700 at intervals, and the second limiting ribs 710 are interference fit with the branch cable 400, and each second limiting rib 710 is provided with a plurality of second limiting protrusions 711, and the second limiting protrusions 711 are interference fit with the branch cable 400, and the plurality of second limiting protrusions 711 on the two second limiting ribs 710 are staggered. The second limiting ribs 710 and the second limiting protrusions 711 can elastically seal the branch cables 400 of different wire diameters within a certain range, and have high adaptability. Moreover, each second limiting rib 710, and the second limiting protrusions 711 on the second limiting rib 710 can form annular bite marks and dot bite marks of different depths on the branch cable 400 after interference fit with the branch cable 400, further improving the sealing performance between the voltage dividing line hole 700 and the branch cable 400. The staggered arrangement of the second limiting protrusions 711 on the two second limiting ribs 710 can avoid the concentration of deeper bite marks on the branch cable 400, thereby reducing the risk of damage and rupture of the insulation layer of the branch cable 400 due to too deep bite marks.

[0074] Optionally, the first limiting protrusion 611 can be a trapezoidal tooth structure, so that the dot-shaped bite marks on the main cable 300 are deep in the middle and shallow on both sides. To a certain extent, it can adapt to a larger wire diameter range of the main cable 300, and can elastically seal main cables 300 of more sizes, with high universality.

[0075] Optionally, the second limiting protrusion 711 can also be a trapezoidal tooth structure, so that the dot-shaped bite marks on the branch cable 400 are deep in the middle and shallow on both sides. To a certain extent, the wire diameter range of the adapted branch cable 400 is larger, and more sizes of branch cables 400 can be elastically sealed, with higher universality.

[0076] Alternatively, if Fig. 9 , Fig.10 , Figure 16-18 As shown, in another possible embodiment, the branch connector further includes a wire buckle 500, which is covered at the opening of the accommodating cavity 110, and the main cable 300 and the branch cable 400 are clamped between the wire buckle 500 and the base 100. Through the cooperation between the wire buckle 500 and the base 100, the anti-pulling performance of the main cable 300 and the branch cable 400 can be improved.

[0077] Specifically, on the base 100, a welding surface 111 is provided around the outer edge of the opening of the accommodating cavity 110, and a welding rib 1111 is provided on the welding surface 111. The wire buckle 500 is provided with a welding protrusion 530 matched with the welding surface 111, and the bottom surface of the welding protrusion 530 is welded to the welding rib 1111. The connection between the wire buckle 500 and the base 100 is achieved by welding. On the one hand, the connection strength is high, which improves the structural stability of the branch connector; on the other hand, the sealing performance is better.

[0078] Further, see Fig.18 On the base 100, a first inner step structure 112 is provided around the outer periphery of the welding surface 111, and the wire buckle 500 forms a first outer step structure 540 around the outer periphery of the welding rib 1111, and the first outer step structure 540 is gap-matched with the first inner step structure 112. If a gap appears due to incomplete welding between the welding protrusion 530 and the welding rib 1111, the colloid in the accommodating cavity 110 of the base 100 needs to flow along the matching gap between the first outer step structure 540 and the first inner step structure 112 ( Fig.18 This makes the colloid's overflow path more complicated, and it is difficult for the colloid to overflow to the outside of the product by its own tension, reducing the risk of colloid overflow.

[0079] Furthermore, if Fig. 9 , Fig.16 and Fig.17 As shown, in other possible embodiments, the branch connector further includes a wire buckle 500, which is covered at the opening of the accommodating cavity 110, and the main cable 300 and the branch cable 400 are clamped between the wire buckle 500 and the base 100. Through the cooperation between the wire buckle 500 and the base 100, the anti-pulling performance of the main cable 300 and the branch cable 400 can be improved.

[0080] Specifically, a glue injection port 550 is provided in the middle of the wire buckle 500, and a box cover 800 is provided at the glue injection port 550, and a first convex portion 810 is provided on the side of the box cover 800 facing the accommodating cavity 110. By providing the first convex portion 810, in the process of closing the box cover 800, the first convex portion 810 first contacts the colloid in the accommodating cavity 110, and squeezes the colloid to both sides during the closing process, so that the air in the accommodating cavity 110 is discharged, and the glue surface rises, so as to achieve full glue injection in the accommodating cavity 110, thereby improving the yield rate of glue injection. In addition, the provision of the first convex portion 810 increases the contact area between the box cover 800 and the colloid, thereby improving the heat dissipation performance of the branch connector.

[0081] Optionally, in one possible embodiment, the material of the box cover 800 can be metal, and the first convex portion 810 of the box cover 800 can be formed by stamping, which has a simple process and is easy to process. In another possible embodiment, the material of the box cover 800 can also be plastic, and the box cover 800 can be formed by injection molding. In other embodiments, the processing method of the box cover 800 can also be other, which can be selected according to actual needs, and this application does not make specific restrictions.

[0082] Furthermore, if Figure 3 and Fig.17 As shown, a second protrusion 113 may also be provided on the bottom wall of the accommodating cavity 110. By providing the second protrusion 113, the contact area between the base 100 and the colloid is increased, and the heat dissipation performance of the branch connector is further improved. In addition, the volume of the accommodating cavity 110 is reduced, thereby reducing the amount of glue applied to the branch connector and reducing the material cost.

[0083] Optionally, the base 100 can be formed by injection molding, which is simple in process and easy to process.

[0084] Furthermore, if Fig. 9 , Fig.16 and Fig.19 As shown, on the wire buckle 500, an annular groove 560 is provided at the outer edge of the glue injection port 550, and the annular groove 560 and the glue injection port 550 form a second inner step structure 570. The box cover 800 is provided with a second outer step structure 820, and the second outer step structure 820 and the second inner step structure 570 are gap-matched. In this way, when the box cover 800 is closed, the colloid in the accommodating cavity 110 needs to flow along the matching gap between the second outer step structure 820 and the second inner step structure 570 ( Fig.19 The colloid is preferably placed in the second outer step structure 820 and the second inner step structure 570, which makes the overflow path of the colloid more complicated. It is difficult for the colloid to overflow to the outside of the product by its own tension, reducing the risk of colloid overflow, thereby solving the problem of colloid overflow caused by tilting the product during transportation after the product is filled with glue or when the colloid is not solidified, thereby improving the production yield. In addition, the colloid overflowing into the second outer step structure 820 and the second inner step structure 570 can also play a role in bonding the box cover 800 and the wire buckle 500, which is beneficial to improve the connection strength between the box cover 800 and the wire buckle 500, thereby improving the structural stability of the branch connector.

[0085] Furthermore, if Fig. 9 and Fig.16As shown, buckles 580 are provided on opposite side walls of the glue filling port 550, and slots 830 corresponding to the buckles 580 are provided at opposite ends of the box cover 800, and the slots 830 are engaged with the corresponding buckles 580. The connection between the box cover 800 and the wire pressing buckle 500 is realized by the engaging method, which has a simple structure and is easy to install.

[0086] Optionally, a plurality of slots 830 may be provided, and each slot 830 is provided with a corresponding buckle 580 to improve the connection strength between the box cover 800 and the wire buckle 500 .

[0087] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A branch connector, characterized in that: include: A base (100), wherein the base (100) is provided with a receiving cavity (110) for filling a colloid, and a terminal positioning column (120) is provided on the bottom wall of the receiving cavity (110); A terminal (200) comprises a fixing plate (210) and a cable connecting portion (220) connected to the fixing plate (210), wherein the fixing plate (210) is provided with a positioning hole (211), and the positioning hole (211) is connected to the terminal positioning column (120); A main cable (300) and a plurality of branch cables (400), the wire core of the main cable (300) and the wire cores of the plurality of branch cables (400) are electrically connected together, and the cable connecting portion (220) is wound and riveted at the joint between the main cable (300) and the plurality of branch cables (400).

2. The branch connector according to claim 1, characterized in that: A cable positioning column (130) is also provided on the bottom wall of the accommodating cavity (110), and the branch cables (400) are arranged in a one-to-one correspondence with the cable positioning column (130). The wire core of the branch cable (400) connected to the main cable (300) has a bending portion (410) that cooperates with the cable positioning column (130), and the bending portion (410) is pressed against the cable positioning column (130) when the branch cable (400) is pulled.

3. The branch connector according to claim 1, characterized in that: The terminal positioning column (120) is inserted into the positioning hole (211); and / or the terminal positioning column (120) is inserted into the positioning hole (211) and riveted to the fixing plate (210).

4. The branch connector according to claim 1, characterized in that: The main cable (300) and the wire cores of the plurality of branch cables (400) are integrated together through a welding process.

5. The branch connector according to any one of claims 1 to 4, characterized in that: The branch connector further comprises a wire pressing buckle (500), the wire pressing buckle (500) is covered at the opening of the accommodating cavity (110), two ends of the wire pressing buckle (500) are respectively provided with a main wire pressing wall (510) and a branch wire pressing wall (520), the main wire pressing wall (510) is provided with a first main wire pressing groove, the branch wire pressing wall (520) is provided with a first branch wire pressing groove corresponding to the branch cable (400), and the base (100) is provided with a first main wire pressing groove corresponding to the branch cable (400). a second main crimping groove (140) corresponding to the first main crimping groove, and a second splitting crimping groove (150) corresponding one-to-one to the first splitting crimping groove, wherein the first main crimping groove and the second main crimping groove (140) form a closed main crimping hole (600) for fixing the main cable (300), and the first splitting crimping groove and the second splitting crimping groove (150) form a closed splitting crimping hole (700) for fixing the branch cable (400); Two circular first limiting convex ribs (610) are arranged at intervals on the inner peripheral wall of the main wire pressing hole (600), the first limiting convex ribs (610) are interference fit with the main cable (300), each of the first limiting convex ribs (610) is provided with a plurality of first limiting protrusions (611), the first limiting protrusions (611) are interference fit with the main cable (300), and the plurality of first limiting protrusions (611) on the two first limiting convex ribs (610) are staggeredly arranged; And / or, two circular second limiting ribs (710) are arranged at intervals on the inner circumferential wall of the voltage dividing line hole (700), the second limiting rib (710) is interference fit with the branch cable (400), each of the second limiting ribs (710) is provided with a plurality of second limiting protrusions (711), the second limiting protrusions (711) are interference fit with the branch cable (400), and the plurality of second limiting protrusions (711) on the two second limiting ribs (710) are staggered.

6. The branch connector according to any one of claims 1 to 4, characterized in that: The branch connector further comprises a wire crimping buckle (500), wherein the wire crimping buckle (500) is covered at the opening of the accommodating cavity (110), and the main cable (300) and the branch cable (400) are clamped between the wire crimping buckle (500) and the base (100); a welding surface (111) is arranged on the base (100) at the outer edge of the opening of the accommodating cavity (110), and a welding rib (1111) is arranged on the welding surface (111); a welding protrusion (530) matching the welding surface (111) is arranged on the wire crimping buckle (500), and the bottom surface of the welding protrusion (530) is welded to the welding rib (1111).

7. The branch connector according to claim 6, characterized in that: On the base (100), a first inner step structure (112) is provided on the outer periphery of the welding surface (111), and the wire buckle (500) forms a first outer step structure (540) on the outer periphery of the welding rib (1111), and the first outer step structure (540) is loosely matched with the first inner step structure (112).

8. The branch connector according to any one of claims 1 to 4, characterized in that: The branch connector further comprises a wire buckle (500), wherein the wire buckle (500) is covered at the opening of the accommodating cavity (110), and the main cable (300) and the branch cable (400) are clamped between the wire buckle (500) and the base (100); a glue injection port (550) is provided in the middle of the wire buckle (500), and a box cover (800) is provided at the glue injection port (550), and a first convex portion (810) is provided on a side of the box cover (800) facing the accommodating cavity (110).

9. The branch connector according to claim 8, characterized in that: A second convex portion (113) is provided on the bottom wall of the accommodating cavity (110).

10. The branch connector according to claim 8, characterized in that: On the wire buckle (500), an annular groove (560) is provided at the outer edge of the glue injection port (550), and the annular groove (560) and the glue injection port (550) form a second inner step structure (570). The box cover (800) is provided with a second outer step structure (820), and the second outer step structure (820) and the second inner step structure (570) are clearance-matched.

11. The branch connector according to claim 8, characterized in that: Buckles (580) are provided on opposite side walls of the glue injection port (550), and slots (830) corresponding to the buckles (580) are provided at opposite ends of the box cover (800), and the slots (830) are engaged with the corresponding buckles (580).

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