A copper bar structure and a plastic-coated large-current wall-through terminal

Abstract

This utility model discloses a copper busbar structure and a plastic-coated high-current through-wall terminal. The copper busbar structure includes: a copper busbar body, with bolts fixed to the upper part, through holes in the lower part, positioning grooves at the bottom, a nut fixed to the lower rear side, and protrusions on the lower left and / or right sides. The through holes on the nut correspond to the through holes. By using the above technical solution, the bolts and nuts are fixed to the copper busbar body to form an integral structure, facilitating the subsequent injection molding connection between the copper busbar body and the terminal housing, thus improving terminal production efficiency. The positioning groove on the copper busbar body is for positioning the copper busbar body during injection molding, cooperating with the positioning protrusions in the injection mold to ensure the connection accuracy between the copper busbar body and the terminal housing. After the copper busbar body and the terminal housing are injection molded together, the protrusions on the lower left and / or right sides are enclosed within the terminal housing, preventing the copper busbar body from shaking and ensuring stability after connection.

Description

Technical Field

[0001] This utility model relates to the field of terminal-related technology, and in particular to a copper busbar structure and a plastic-coated high-current through-wall terminal. Background Technology

[0002] Currently, high-current through-wall terminals on the market generally consist of a housing, a copper busbar, and bolts. The connection between the copper busbar and the housing is as follows: first, the bolt head is inserted into the hexagonal groove on the housing; then, the lower end of the copper busbar extends through the through hole on the housing to the lower end of the housing. At the same time as the copper busbar is inserted, the threaded part of the upper end of the bolt is inserted into the through hole on the copper busbar. When the copper busbar is assembled, the through hole at the lower end of the copper busbar corresponds to the nut on the housing (this nut is used to mate with the screw to crimp the wire). Then, glue is applied to seal the position where the copper busbar mates with the through hole. This connection method between the copper busbar and the housing is relatively cumbersome. Due to the bolt assembly involved, it is also difficult to connect the copper busbar and the housing using injection molding, resulting in low terminal production efficiency. Therefore, how to design a copper busbar structure that allows the copper busbar to be connected to the housing using injection molding to improve the subsequent terminal production efficiency has become an urgent technical problem to be solved. Utility Model Content

[0003] In order to overcome the existing technical defects, the purpose of this utility model is to provide a copper busbar structure and a plastic-coated high-current through-wall terminal to solve the above-mentioned technical problems.

[0004] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0005] According to one aspect of the present invention, a copper busbar structure is designed, comprising: a copper busbar body, wherein a bolt is fixedly connected to the upper part of the copper busbar body, a through hole is provided in the lower part, a positioning groove is provided at the bottom, a nut is fixedly connected to the lower rear side, and a protrusion is provided on the lower left side and / or right side, wherein the through hole on the nut corresponds to the through hole.

[0006] By adopting the above technical solution, bolts and nuts are fixed to the copper busbar body to form an integral structure, which facilitates the subsequent connection between the copper busbar body and the terminal housing by injection molding, thereby improving the production efficiency of the terminals. The positioning groove on the copper busbar body is for positioning the copper busbar body in conjunction with the positioning protrusion in the injection mold during injection molding, ensuring the connection accuracy between the copper busbar body and the terminal housing. After the copper busbar body and the terminal housing are injection molded together, the protrusion on its lower left and / or right side is wrapped inside the terminal housing. The protrusion can prevent the copper busbar body from shaking and ensure the stability after connection.

[0007] To better address the aforementioned technical deficiencies, this utility model also offers a superior technical solution:

[0008] In some embodiments, the copper busbar body is integrally formed by a top plate, a rear side plate, a front side plate, and a connecting plate. Bolts are fixed to both the top plate and the connecting plate, with the bolt shank located above the copper busbar body and the bolt head located below it. The front side of the front side plate and the upper part of the connecting plate form a positioning step. The positioning step is used to engage with a positioning block in the injection mold to achieve longitudinal positioning of the copper busbar body, further improving the connection accuracy between the copper busbar body and the terminal housing.

[0009] In some embodiments, the bolt is a press-fit bolt. Press-fit bolts can be used to secure the bolt to the copper busbar body via riveting.

[0010] In some embodiments, the nut is a press-fit nut. A press-fit nut can be fixed to the copper busbar body by riveting.

[0011] In some embodiments, the positioning groove is provided in two parts and is in the form of an isosceles trapezoid.

[0012] According to another aspect of this utility model, a plastic-coated high-current through-wall terminal is designed, comprising: a housing and the copper busbar body described above, wherein the copper busbar body and the housing are integrally injection molded, the housing encloses the protrusions, bolt heads, nuts and sealing the upper part of the rear side plate on the copper busbar body, and the housing is provided with a clearance hole corresponding to the through hole on the nut.

[0013] In some embodiments, a plurality of ejector grooves are provided on the rear side of the lower end of the housing. The ejector grooves can prevent shrinkage deformation of the housing during injection molding.

[0014] In some embodiments, the rear side of the housing is provided with a first support hole corresponding to the rear side plate of the copper busbar body, and the bottom is provided with a second support hole corresponding to the top plate of the copper busbar body and a third support hole corresponding to the connecting plate. The support holes are formed after the support top in the injection mold supports the copper busbar body, preventing deformation of the copper busbar body due to injection pressure when the thickness of the copper busbar body is small, and ensuring the quality of the product after injection molding.

[0015] In some embodiments, the lower part of the top plate, the rear part of the front side plate, and the lower part of the connecting plate on the copper busbar body are enclosed within the housing. This can improve the connection strength and stability between the copper busbar body and the housing. Attached Figure Description

[0016] Figure 1 A schematic diagram of a copper busbar structure according to one embodiment of this utility model;

[0017] Figure 2 for Figure 1 A structural diagram from another perspective;

[0018] Figure 3A schematic diagram of a plastic-coated high-current through-wall terminal;

[0019] Figure 4 for Figure 3 A structural diagram from another perspective;

[0020] Figure 5 for Figure 3 Another perspective on the structure;

[0021] Figure label:

[0022] 1. Copper busbar body; 1a. Top plate; 1b. Rear side plate; 1c. Front side plate; 1d. Connecting plate; 11. Bolt; 12. Through hole; 13. Positioning groove; 14. Nut; 15. Protrusion; 2. Housing; 21. Clearance hole; 22. Material unloading groove; 23. First support hole; 24. Second support hole; 25. Third support hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationships based on the directional or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as setting, installing, connecting, and fixing should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] Example 1

[0027] refer to Figures 1 to 2As shown, the present invention provides a copper busbar structure, comprising: a copper busbar body 1, with bolts 11 fixedly connected to the upper part of the copper busbar body 1, through holes 12 provided in the lower part, positioning grooves 13 provided in the bottom, and nuts 14 fixedly connected to the lower rear side. Further, the copper busbar body 1 is integrally formed by a top plate 1a, a rear side plate 1b, a front side plate 1c, and a connecting plate 1d. Bolts 11 are fixedly connected to both the top plate 1a and the connecting plate 1d. The threaded portion of the bolts 11 is located above the copper busbar body 1, and the threaded head of the bolts 11 is located below the copper busbar body 1. The bolts 11 fixed on 1a and the connecting plate 1d may be the same or different. In this embodiment, it is preferred that the top plate 1a is fixed with an M12 press-fit bolt and the connecting plate 1d is fixed with an M6 press-fit bolt. Press-fit bolts facilitate connection and installation. The front side of the front plate 1c and the upper part of the connecting plate 1d form a positioning step. There is one or two positioning grooves 13. In this embodiment, it is preferred that there are two positioning grooves 13, which are respectively in the form of an isosceles trapezoidal structure that is wider at the bottom and narrower at the top. The through hole on the nut 14 corresponds to the through hole 12. The nut 14 is a press-fit nut.

[0028] A protrusion 15 is provided on the lower left side of the copper busbar body 1, or a protrusion 15 is provided on the lower right side of the copper busbar body 1, or a protrusion 15 is provided on both the lower left and right sides of the copper busbar body 1. Each side has one, two or more protrusions 15. In this embodiment, it is preferred that a protrusion 15 is provided on both the lower left and right sides of the copper busbar body 1.

[0029] Example 2

[0030] refer to Figures 1 to 5 As shown, the present invention provides a plastic-coated high-current through-wall terminal, comprising: a housing 2 and a copper busbar body 1 as in Embodiment 1. The copper busbar body 1 has one, two, three or more components. In this embodiment, it is preferred that there are three copper busbar bodies 1. The copper busbar body 1 and the housing 2 are integrally injection molded. The housing 2 covers the protrusion 15, the screw head of the bolt 11, the nut 14 and seals the upper part of the rear side plate 1b on the copper busbar body 1. The housing 2 is provided with a clearance hole 21 corresponding to the through hole on the nut 14.

[0031] Multiple material feeding grooves 22 are equidistantly arranged on the rear side of the lower end of the shell 2.

[0032] The rear side of the housing 2 is provided with a first support hole 23 corresponding to the rear side plate 1b of the copper busbar body 1. The bottom of the housing 2 is provided with a second support hole 24 corresponding to the top plate 1a of the copper busbar body 1 and a third support hole 25 corresponding to the connecting plate 1d. The number of sets of the first support holes 23 is the same as the number of sets of the copper busbar body 1, with two holes in each set. The two first support holes 23 in each set correspond to the rear side plate 1b of one copper busbar body 1. There are three sets of the second support holes 24, with two holes in each set. The two second support holes 24 in each set correspond to the top plate 1a of one copper busbar body 1. There are three sets of the third support holes 25, with two holes in each set. The two third support holes 25 in each set correspond to the connecting plate 1d of one copper busbar body 1.

[0033] The lower part of the top plate 1a, the rear part of the front side plate 1c, and the lower part of the connecting plate 1d on the copper busbar body 1 are enclosed in the shell 2.

[0034] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A copper busbar structure, characterized in that, include: The copper busbar body has bolts fixed to its upper part, through holes in its lower part, positioning grooves at its bottom, nuts fixed to its lower rear side, and protrusions on its lower left and / or right sides. The through holes on the nuts correspond to the through holes.

2. The copper busbar structure according to claim 1, characterized in that, The copper busbar body is integrally formed by a top plate, a rear side plate, a front side plate, and a connecting plate. Bolts are fixed to both the top plate and the connecting plate. The bolt shank is located above the copper busbar body, and the bolt head is located below the copper busbar body. The front side of the front side plate and the upper part of the connecting plate form a positioning step.

3. A copper busbar structure according to claim 1 or 2, characterized in that, The bolt is a press-fit bolt.

4. The copper busbar structure according to claim 1, characterized in that, The nut is a press-fit nut.

5. A copper busbar structure according to claim 1, characterized in that, The positioning groove is provided in two parts and is in the shape of an isosceles trapezoid.

6. A plastic-coated high-current through-wall terminal, characterized in that, include: The housing and the copper busbar body according to any one of claims 1 to 5, wherein the copper busbar body and the housing are integrally injection molded, the housing encloses the protrusions, bolt heads, nuts and sealing the upper part of the rear side plate on the copper busbar body, and the housing is provided with a clearance hole corresponding to the through hole on the nut.

7. A plastic-coated high-current through-wall terminal according to claim 6, characterized in that, Multiple material feeding slots are provided on the rear side of the lower end of the housing.

8. A plastic-coated high-current through-wall terminal according to claim 6, characterized in that, The rear side of the housing is provided with a first support hole corresponding to the rear side plate of the copper busbar body, and the bottom is provided with a second support hole corresponding to the top plate of the copper busbar body and a third support hole corresponding to the connecting plate.

9. A plastic-coated high-current through-wall terminal according to claim 6, characterized in that, The lower part of the top plate, the rear part of the front side plate, and the lower part of the connecting plate on the copper busbar body are enclosed within the housing.

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