Bolt for installing copper bar and copper bar structure

Abstract

The utility model discloses a bolt for installing a copper bar and a copper bar structure, the bolt comprises a bolt head part and a threaded rod part, and the threaded rod part is connected to the middle part of the bolt head part; the bolt head is provided with a first plane which is perpendicular to the threaded rod part and faces the side where the threaded rod part is located, a plurality of reinforcing ribs are arranged on the first plane in the circumferential direction at intervals in a protruding mode, and one end of each reinforcing rib is connected with the root of the threaded rod part. The length of each reinforcing rib in the radial direction is smaller than 1 / 2 of the radial distance between the threaded rod part and the outer edge of the first plane. When the copper bar is installed through bolts, all the reinforcing ribs can be sunk into the copper bar through riveting, and then the effect of enhancing the strength of the copper bar structure can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and in particular to a bolt and copper busbar structure for mounting copper busbars. Background Technology

[0002] Currently, in the field of new energy vehicles, the positive and negative terminals of the power battery are connected to copper busbars, which are used for electrical signal transmission. The copper busbars are installed in their respective positions using bolts. However, current copper busbars often suffer from insufficient strength. Therefore, it is necessary to provide an improved solution to enhance the strength of the copper busbar structure. Utility Model Content

[0003] The purpose of this utility model is to provide a bolt and copper busbar structure for installing copper busbars, which can solve the technical problem of insufficient strength of copper busbar structure.

[0004] To achieve the above objectives, this utility model provides a bolt for installing copper busbars. The bolt includes a bolt head and a threaded shank, the threaded shank being connected to the middle of the bolt head. The bolt head has a first plane perpendicular to the threaded shank and facing the side where the threaded shank is located. A plurality of reinforcing ribs are circumferentially spaced on the first plane. One end of each reinforcing rib is connected to the root of the threaded shank. The radial length of each reinforcing rib is less than 1 / 2 of the radial distance between the threaded shank and the outer edge of the first plane.

[0005] Optionally, the bolt is an M6 bolt, and the end of the threaded shank away from the bolt head forms a natural chamfer.

[0006] Optionally, the radial length of each of the reinforcing ribs is approximately one-third of the radial distance between the threaded rod portion and the outer edge of the first plane.

[0007] Optionally, the reinforcing rib includes a top surface parallel to the first plane, and the top surface is connected to the threaded rod portion.

[0008] Optionally, the width of the reinforcing rib is 1.0±0.5mm and the height is 1.0±0.5mm; the bolt head is in the shape of a round plate, the thickness of the bolt head is between 1.0mm and 2.0mm, and the diameter is 10.0±0.5mm; the length of the threaded shank is 15.0±0.5mm.

[0009] Optionally, the thickness of the bolt head is 1.4 ± 0.1 mm.

[0010] Optionally, the bolt is made of any one of 10B21, SCM435 and stainless steel; and / or, the surface of the bolt is electroplated with a zinc-nickel alloy.

[0011] To achieve the above objectives, this utility model also provides a copper busbar structure, including a copper busbar and a first bolt, wherein the first bolt is the bolt as described above, a first through hole is formed on the copper busbar, the threaded shank is adapted to pass through the first through hole, and each of the reinforcing ribs is recessed into the copper busbar by riveting.

[0012] Optionally, the copper busbar includes a first plate portion, one end of the first plate portion is bent vertically and extends to form a second plate portion, the end of the first plate portion away from the second plate portion is bent and extends to form a tail portion, the tail portion is thinned relative to the first plate portion on its outer side; the first through hole is formed in the second plate portion.

[0013] The copper busbar structure also includes a second bolt, and a second through hole is formed on the first plate, through which the second bolt passes.

[0014] Optionally, at least two positioning holes are formed on the second plate portion.

[0015] In this embodiment of the invention, a plurality of reinforcing ribs are protruding on the first plane of the bolt head. One end of each reinforcing rib is connected to the root of the threaded shank. The radial length of each reinforcing rib is less than half the radial distance between the threaded shank and the outer edge of the first plane. When installing the copper busbar using bolts, riveting allows each reinforcing rib to be recessed into the copper busbar, thereby enhancing the strength of the copper busbar structure. Moreover, it essentially does not change the dimensions of the copper busbar structure. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the positive electrode copper busbar according to an embodiment of this utility model.

[0017] Figure 2 This is a three-dimensional structural diagram of the negative electrode copper busbar according to an embodiment of this utility model.

[0018] Figure 3 This is a three-dimensional structural diagram of the bolt according to an embodiment of the present utility model.

[0019] Figure 4 This is a side view of the bolt in an embodiment of this utility model.

[0020] Figure 5 This is a top view of the bolt in an embodiment of this utility model.

[0021] Figure 6 This is a three-dimensional structural diagram of the positive electrode copper busbar structure according to an embodiment of this utility model.

[0022] Figure 7 This is a three-dimensional structural diagram of the negative electrode copper busbar structure according to an embodiment of this utility model. Detailed Implementation

[0023] To explain in detail the technical content, structural features, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0024] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0025] Figure 1 A positive electrode copper busbar 1a for use in power batteries for new energy vehicles is shown. The positive electrode copper busbar 1a is installed in the corresponding position by bolts. The positive electrode copper busbar 1a has through holes 11a for the bolts to pass through. The positive electrode copper busbar 1a has the problem of insufficient strength. Figure 2 The diagram shows a negative electrode copper busbar 1b for use in power batteries for new energy vehicles. The negative electrode copper busbar 1b is installed in the corresponding position by bolts, and the negative electrode copper busbar 1b has through holes 11b for the bolts to pass through. This negative electrode copper busbar 1b also suffers from insufficient strength.

[0026] Based on the technical problems existing in the copper busbar 1 mentioned above, this utility model embodiment discloses a bolt 3 for installing the copper busbar 1.

[0027] Please see Figures 3 to 5 Bolt 3 includes a bolt head 31 and a threaded shank 32, the threaded shank 32 being connected to the middle of the bolt head 31; the bolt head 31 has a first plane 311 perpendicular to the threaded shank 32 and facing the side where the threaded shank 32 is located, and a plurality of reinforcing ribs 33 are circumferentially spaced on the first plane 311, one end of each reinforcing rib 33 being connected to the root of the threaded shank 32, and the radial length of each reinforcing rib 33 being less than 1 / 2 of the radial distance between the threaded shank 32 and the outer edge of the first plane 311.

[0028] In this embodiment of the invention, a plurality of reinforcing ribs 33 are protruding from the first plane 311 of the bolt head 31. One end of each reinforcing rib 33 is connected to the root of the threaded shank 32, and the radial length of each reinforcing rib 33 is less than half the radial distance between the threaded shank 32 and the outer edge of the first plane 311. When the copper busbar 1 is installed using the bolt 3, the reinforcing ribs 33 can be recessed into the copper busbar 1 by riveting, thereby enhancing the strength of the copper busbar 1 structure. Moreover, the dimensions of the copper busbar 1 structure are basically not changed.

[0029] Specifically, bolt 3 is an M6 bolt (a metric bolt with a nominal thread outer diameter of 6mm).

[0030] More specifically, bolt 3 has a pitch of 1.0 mm and a tolerance grade of 6 g.

[0031] Specifically, the end of the threaded shank 32 away from the bolt head 31 forms a natural chamfer 321.

[0032] Specifically, the number of reinforcing ribs 33 is between 4 and 16. In this specific example, the number of reinforcing ribs 33 is 16.

[0033] Specifically, the reinforcing ribs 33 are evenly distributed in the circumferential direction.

[0034] Specifically, the radial length of each reinforcing rib 33 is approximately one-third of the radial distance between the threaded shank 32 and the outer edge of the first plane 311.

[0035] Specifically, the reinforcing rib 33 includes a top surface 331 parallel to the first plane 311, and the top surface 331 is connected to the threaded rod portion 32.

[0036] In some embodiments, the width of the reinforcing rib 33 is 1.0±0.5mm and the height is 1.0±0.5mm.

[0037] In some embodiments, the bolt head 31 is flat and the thickness of the bolt head 31 is between 1.0 mm and 2.0 mm.

[0038] Specifically, the thickness of the bolt head 31 is 1.4 ± 0.1 mm.

[0039] Specifically, the bolt head 31 is in the shape of a round plate with a diameter of 10.0±0.5mm.

[0040] In some embodiments, the length of the threaded shank 32 is 15.0 ± 0.5 mm.

[0041] In some embodiments, the bolt 3 can be made of any of the following steels: 10B21, SCM435, and stainless steel. In a specific example, SCM435 is used.

[0042] In some embodiments, the surface of the bolt 3 is electroplated with a zinc-nickel alloy to make the bolt 3 aesthetically pleasing.

[0043] In some embodiments, the manufacturing process of bolt 3 is cold heading, or cold heading followed by machining.

[0044] Please see Figures 1 to 7This utility model embodiment also discloses a copper busbar structure, including a copper busbar 1 and a bolt 3 as described above. A through hole 11 is formed on the copper busbar 1, and a threaded rod 32 is adapted to pass through the through hole 11. Each reinforcing rib 33 is recessed into the copper busbar 1 by riveting.

[0045] Specifically, copper busbar 1 can be positive copper busbar 1a (e.g., ...). Figure 1 and Figure 6 As shown), it can also be the negative electrode copper busbar 1b (as shown). Figure 2 and Figure 7 (As shown).

[0046] Specifically, the thickness of the copper busbar 1 is 2.0 mm, and the depth of the through hole 11 is 2.0 mm.

[0047] Specifically, the material of copper busbar 1 is T2.

[0048] In some embodiments, the copper busbar 1 includes a first plate portion 12, one end of which is vertically bent and extended to form a second plate portion 13, and the end of the first plate portion 12 away from the second plate portion 13 is bent and extended to form a tail portion 14, the tail portion 14 being thinned relative to the first plate portion 12 on its outer side 141. A through hole 11 is formed in the second plate portion 13. The copper busbar structure also includes a second bolt 4, with a through hole 121 formed on the first plate portion 12, and the second bolt 4 passing through the through hole 121.

[0049] Specifically, at least two positioning holes 132 are formed on the second plate portion 13. The positioning holes 132 are provided to allow for positioning during the assembly of the copper busbar 1.

[0050] Specifically, the thickness of the first plate portion 12 and the second plate portion 13 is 2 mm, and the thickness of the tail portion 14 is 1.5 mm.

[0051] The above-disclosed examples are merely preferred embodiments of the present utility model, intended to facilitate understanding and implementation by those skilled in the art. They should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model are still within the scope of the present utility model.

Claims

1. A bolt for mounting a copper bar, characterized by, The bolt includes a bolt head and a threaded shank, the threaded shank being connected to the middle of the bolt head; the bolt head has a first plane perpendicular to the threaded shank and facing the side where the threaded shank is located, the first plane having a plurality of reinforcing ribs circumferentially spaced, one end of each reinforcing rib being connected to the root of the threaded shank, and the radial length of each reinforcing rib being less than 1 / 2 of the radial distance between the threaded shank and the outer edge of the first plane.

2. The bolt for mounting a copper bar according to claim 1, characterized by, The bolt is an M6 bolt, and the end of the threaded shank away from the bolt head has a natural chamfer.

3. The bolt for mounting a copper bar according to claim 1, wherein The radial length of each of the reinforcing ribs is approximately one-third of the radial distance between the threaded rod portion and the outer edge of the first plane.

4. The bolt for mounting a copper bar according to claim 1, wherein The reinforcing rib includes a top surface parallel to the first plane, and the top surface is connected to the threaded rod portion.

5. The bolt for mounting a copper bar according to claim 1, wherein The width of the reinforcing rib is 1.0±0.5mm and the height is 1.0±0.5mm; the bolt head is in the shape of a round plate, the thickness of the bolt head is between 1.0mm and 2.0mm, and the diameter is 10.0±0.5mm; the length of the threaded shank is 15.0±0.5mm.

6. The bolt for mounting a copper bar according to claim 5, wherein The thickness of the bolt head is 1.4±0.1mm.

7. The bolt for mounting a copper busbar according to claim 1, characterized in that, The bolts are made of any one of the following steels: 10B21, SCM435, and stainless steel; and / or, The surface of the bolt is electroplated with a zinc-nickel alloy.

8. A copper bar structure, characterized by, It includes a copper busbar and a first bolt, wherein the first bolt is the bolt according to any one of claims 1 to 7, a first through hole is formed on the copper busbar, the threaded shank is adapted to pass through the first through hole, and each of the reinforcing ribs is recessed into the copper busbar by riveting.

9. The copper busbar structure according to claim 8, characterized in that, The copper busbar includes a first plate portion, one end of the first plate portion is bent vertically and extends to form a second plate portion, the end of the first plate portion away from the second plate portion is bent and extends to form a tail portion, the tail portion is thinned relative to the first plate portion on its outer side; the first through hole is formed in the second plate portion. The copper busbar structure also includes a second bolt, and a second through hole is formed on the first plate, through which the second bolt passes.

10. The copper bar structure of claim 9, wherein, At least two positioning holes are formed on the second plate.

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