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, a threaded rod part and a truncated cone guide end, the threaded rod part is connected to the middle part of the bolt head part, and the truncated cone guide end is connected to one end, far away from the bolt head part, of the threaded rod part; the bolt head is provided with a first plane which is perpendicular to the threaded rod and faces the side where the threaded rod is located, a plurality of reinforcing ribs are arranged on the first plane in the circumferential direction at intervals in a protruding mode, one end of each reinforcing rib is connected with the root of the threaded rod, and the other end of at least part of the reinforcing ribs extends to the outer edge of the first plane or is close to 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, a threaded shank, and a truncated cone guide end. The threaded shank is connected to the middle of the bolt head, and the truncated cone guide end is connected to the end of the threaded shank away from 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, and at least some of the other ends of the reinforcing ribs extend to or near the outer edge of the first plane.

[0005] Optionally, the other end of each of the reinforcing ribs extends to or near the outer edge of the first plane; and / or,

[0006] The reinforcing rib includes a plurality of first reinforcing ribs and a plurality of second reinforcing ribs. At least one second reinforcing rib is provided between every two adjacent first reinforcing ribs. The other end of the first reinforcing rib extends to or near the outer edge of the first plane. The radial length of the second reinforcing rib is less than 1 / 2 of the radial distance between the threaded rod portion and the outer edge of the first plane.

[0007] Optionally, at least a portion of the reinforcing rib includes a top surface parallel to the first plane and an inclined surface connected to the top surface. One end of the top surface is connected to the threaded rod portion, and the other end of the top surface is connected to the inclined surface. The inclined surface extends toward the outer edge of the first plane and connects to the first plane. The radial length of the projection of the inclined surface onto the first plane is less than the radial length of the top surface.

[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 circular plate, the thickness of the bolt head is between 2.0mm and 3.5mm, and the diameter is 14.5±0.5mm; the total length of the threaded shank and the truncated cone guide end is 20.3±0.5mm.

[0009] Optionally, the thickness of the bolt head is 2.5±0.1mm, the radial dimension of the threaded shank is 8.1±0.15mm, the length of the truncated cone guide end is 3.6mm, the length of the cone portion of the truncated cone guide end is 2.0mm, the cone angle of the cone portion is 75°±15°, and the diameter of the cylindrical portion of the truncated cone guide end is 6.0mm.

[0010] Optionally, the bolt is an M8 bolt.

[0011] 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.

[0012] 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.

[0013] Optionally, the copper busbar includes a first plate portion, the first through hole is formed in the first plate portion, one end of the first plate portion is bent vertically and extends to form a second plate portion, and one end of the first plate portion away from the second plate portion is bent and extends to form a tail portion, the tail portion being thinned relative to the first plate portion on its outer side.

[0014] The copper busbar structure also includes a second bolt, and a second through hole is formed on the second plate, through which the second bolt passes.

[0015] Optionally, at least two positioning holes are formed on the second plate portion.

[0016] 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, and the other end of at least some of the reinforcing ribs extends to or near 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. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the positive electrode copper busbar according to an embodiment of this utility model.

[0018] Figure 2 This is a three-dimensional structural diagram of the negative electrode copper busbar according to an embodiment of this utility model.

[0019] Figure 3 This is a three-dimensional structural diagram of the bolt according to an embodiment of the present utility model.

[0020] Figure 4 This is a side view of the bolt in an embodiment of this utility model.

[0021] Figure 5 This is a top view of the bolt in an embodiment of this utility model.

[0022] Figure 6 This is a three-dimensional structural schematic diagram of a bolt according to another embodiment of this utility model.

[0023] Figure 7 This is a side view of a bolt according to another embodiment of the present invention.

[0024] Figure 8 This is a top view of a bolt according to another embodiment of this utility model.

[0025] Figure 9 This is a three-dimensional structural diagram of the positive electrode copper busbar structure according to an embodiment of this utility model.

[0026] Figure 10 This is a three-dimensional structural diagram of the negative electrode copper busbar structure according to an embodiment of this utility model. Detailed Implementation

[0027] 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.

[0028] 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.

[0029] 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 2The 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.

[0030] 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.

[0031] Please see Figures 3 to 8 The bolt 3 includes a bolt head 31, a threaded shank 32, and a truncated cone guide end 33 (PC type structure). The threaded shank 32 is connected to the middle of the bolt head 31, and the truncated cone guide end 33 is connected to the end of the threaded shank 32 away from the bolt head 31. The bolt head 31 has a first plane 311 that is perpendicular to the threaded shank 32 and faces the side where the threaded shank 32 is located. A plurality of reinforcing ribs 34 are circumferentially spaced on the first plane 311. One end of each reinforcing rib 34 is connected to the root of the threaded shank 32, and the other end of at least some of the reinforcing ribs 34 extends to or near the outer edge of the first plane 311.

[0032] In this embodiment of the invention, a plurality of reinforcing ribs 34 are protruding from the first plane 311 of the bolt head 31. One end of each reinforcing rib 34 is connected to the root of the threaded shank 32, and the other end of at least some of the reinforcing ribs 34 extends to or near the outer edge of the first plane 311. When the copper busbar 1 is installed using the bolt 3, the reinforcing ribs 34 can be recessed into the copper busbar 1 by riveting, thereby enhancing the strength of the copper busbar structure. Moreover, the dimensions of the copper busbar structure are basically not changed.

[0033] Specifically, bolt 3 is an M8 bolt (a metric bolt with a nominal thread outer diameter of 8mm).

[0034] More specifically, bolt 3 has a pitch of 1.25 mm and a tolerance grade of 6 g.

[0035] Specifically, the number of reinforcing ribs 34 is between 4 and 16.

[0036] Specifically, the reinforcing ribs 34 are evenly distributed in the circumferential direction.

[0037] Please see Figures 3 to 5 In some embodiments, the other end of each reinforcing rib 34 extends to or near the outer edge of the first plane 311. Figures 3 to 5 In the example, the other end of each reinforcing rib 34 extends to the outer edge of the first plane 311.

[0038] Specifically, there are 8 reinforcing ribs 34, which are distributed equidistantly in a circumferential direction.

[0039] Please see Figures 6 to 8 The reinforcing rib 34 includes a plurality of first reinforcing ribs 34a and a plurality of second reinforcing ribs 34b. At least one second reinforcing rib 34b is provided between every two adjacent first reinforcing ribs 34a. The other end of the first reinforcing rib 34a extends to or near the outer edge of the first plane 311. The radial length of the second reinforcing rib 34b is less than 1 / 2 of the radial distance between the threaded rod portion 32 and the outer edge of the first plane 311.

[0040] exist Figures 6 to 8 In the example, the other end of the first reinforcing rib 34a is close to the outer edge of the first plane 311.

[0041] Specifically, there are four first reinforcing ribs 34a, which are equidistantly distributed in the circumferential direction, and eight second reinforcing ribs 34b, with two circumferentially spaced second reinforcing ribs 34b between each two adjacent first reinforcing ribs 34a.

[0042] Specifically, the radial length of the second reinforcing rib 34b is approximately one-third of the radial distance between the threaded shank 32 and the outer edge of the first plane 311.

[0043] Specifically, the first reinforcing rib 34a includes a top surface 341 parallel to the first plane 311 and an inclined surface 342 connected to the top surface 341. One end of the top surface 341 is connected to the threaded rod portion 32, and the other end of the top surface 341 is connected to the inclined surface 342. The inclined surface 342 extends toward the outer edge of the first plane 311 and is connected to the first plane 311. The radial length of the projection of the inclined surface 342 onto the first plane 311 is less than the radial length of the top surface 341.

[0044] In some embodiments, the width of the reinforcing rib 34 is 1.0±0.5mm and the height is 1.0±0.5mm.

[0045] In some embodiments, the bolt head 31 is flat and the thickness of the bolt head 31 is between 2.0 mm and 3.5 mm.

[0046] Specifically, the bolt head 31 is in the shape of a round plate with a diameter of 14.5±0.5mm.

[0047] In some embodiments, the total length of the threaded rod portion 32 and the truncated cone guide end 33 is 20.3 ± 0.5 mm.

[0048] Specifically, the bolt head 31 has a thickness of 2.5±0.1mm, the threaded shank 32 has a radial dimension of 8.1±0.15mm, the truncated cone guide end 33 has a length of 3.6mm, the cone portion 331 of the truncated cone guide end 33 has a length of 2.0mm, the cone angle of the cone portion 331 is 75°±15°, and the diameter of the cylindrical portion 332 of the truncated cone guide end 33 is 6.0mm.

[0049] 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.

[0050] In some embodiments, the surface of the bolt 3 is electroplated with a zinc-nickel alloy to make the bolt 3 aesthetically pleasing.

[0051] In some embodiments, the manufacturing process of bolt 3 is cold heading, or cold heading followed by machining.

[0052] Please see Figures 1 to 10 This utility model embodiment also discloses a copper busbar structure, including a copper busbar 1 and a bolt 3 as described above. A first through hole 11 is formed on the copper busbar 1, and a threaded rod portion 32 is adapted to pass through the first through hole 11. Each reinforcing rib 34 is recessed into the copper busbar 1 by riveting.

[0053] Specifically, copper busbar 1 can be positive copper busbar 1a (e.g., ...). Figure 1 and Figure 9 As shown), it can also be the negative electrode copper busbar 1b (as shown). Figure 2 good Figure 10 (As shown).

[0054] Specifically, the thickness of the main body of the copper busbar 1 is 2.0 mm, and correspondingly, the depth of the first through hole 11 is 2.0 mm.

[0055] Specifically, the material of copper busbar 1 is T2.

[0056] In some embodiments, the copper busbar 1 includes a first plate portion 12, a first through hole 11 formed in the first plate portion 12, one end of the first plate portion 12 being bent vertically to form a second plate portion 13, and the end of the first plate portion 12 away from the second plate portion 13 being bent to form a tail portion 14, the tail portion 14 being thinned relative to the first plate portion 12 on its outer side 141. The copper busbar structure also includes a second bolt 4, a second through hole 131 formed on the second plate portion 13, the second bolt 4 being disposed at the second through hole 131.

[0057] 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.

[0058] 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.

[0059] 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, a threaded shank, and a truncated cone guide end. The threaded shank is connected to the middle of the bolt head, and the truncated cone guide end is connected to the end of the threaded shank away from 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, and at least some of the other ends of the reinforcing ribs extend to or near the outer edge of the first plane.

2. The bolt for mounting a copper busbar according to claim 1, characterized in that, The other end of each of the reinforcing ribs extends to or near the outer edge of the first plane; and / or, The reinforcing rib includes a plurality of first reinforcing ribs and a plurality of second reinforcing ribs. At least one second reinforcing rib is provided between every two adjacent first reinforcing ribs. The other end of the first reinforcing rib extends to or near the outer edge of the first plane. The radial length of the second reinforcing rib is less than 1 / 2 of the radial distance between the threaded rod portion and the outer edge of the first plane.

3. The bolt for mounting a copper bar according to claim 1, wherein At least a portion of the reinforcing rib includes a top surface parallel to the first plane and an inclined surface connected to the top surface. One end of the top surface is connected to the threaded rod portion, and the other end of the top surface is connected to the inclined surface. The inclined surface extends toward the outer edge of the first plane and is connected to the first plane. The radial length of the projection of the inclined surface onto the first plane is less than the radial length of the top surface.

4. 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 2.0mm and 3.5mm, and the diameter is 14.5±0.5mm; the total length of the threaded shank and the truncated cone guide end is 20.3±0.5mm.

5. The bolt for mounting a copper bar according to claim 4, wherein The bolt head has a thickness of 2.5±0.1mm, the threaded shank has a radial dimension of 8.1±0.15mm, the guide end has a length of 3.6mm, the cone of the guide end has a length of 2.0mm, the cone angle of the cone is 75°±15°, and the cylindrical portion of the guide end has a diameter of 6.0mm.

6. The bolt for mounting a copper bar according to claim 1, wherein The bolt is an M8 bolt.

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, the first through hole is formed in the first plate portion, one end of the first plate portion is bent vertically and extends to form a second plate portion, and 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 being thinned relative to the first plate portion on its outer side. The copper busbar structure also includes a second bolt, and a second through hole is formed on the second 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.

Images