Braided bus bar

Abstract

To enhance the movement absorption effect due to a braided structure in a braided bus bar.SOLUTION: A braided wire 10 has a conductive portion 11 with a braided structure, and the width B of one end of a conductive portion 11 is narrower than the width A of the other end.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a braided bus bar. [Background technology]

[0002] Conventionally, as described in Patent Document 1, a three-phase terminal block structure has been disclosed that is fixed to a case that houses a vehicle motor and uses a braided bus bar to electrically connect the motor and PCU at the junction between them.

[0003] A braided bus bar is configured with a conductive portion having a braided structure made of bundled thin copper wires, etc., and it is expected that the braided structure of the bus bar will absorb movement caused by vibrations generated in, for example, a motor. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2023-30733 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in conventional braided bus bars, there is a limit to the amount of movement that can be absorbed by the braided structure. For this reason, it is necessary to strictly define the positional relationship of the assembly positions of both ends of the braided bus bar relative to, for example, the motor or PCU.

[0006] Furthermore, if the magnitude of external vibrations acting on the braided bus bar exceeds expectations, it becomes difficult for the braided structure of the braided bus bar to absorb the amount of movement, and there is a risk of breakage due to high-load vibrations, etc.

[0007] An object of the present invention is to improve the movement absorption effect of the braided structure of a braided bus bar. [Means for solving the problem]

[0008] The invention according to claim 1 is a braided busbar having a conductive part with a braided structure, in which the width of one end of the conductive part is narrower than the width of the other end. [Effects of the Invention]

[0009] By making the width of one end of the conductive part of the braided structure narrower than the width of the other end, it is possible to give some excess length to the braid (a state in which the braid is slightly loose), thereby increasing the movement absorption effect of the braided structure. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 shows a braided bus bar according to a first embodiment, where (A) is a plan view and (B) is an explanatory diagram showing how the amount of movement is absorbed. [Figure 2] FIG. 2 shows a braided bus bar according to a second embodiment, where (A) is a plan view and (B) is a side view. [Figure 3] FIG. 3 shows a braided bus bar according to a third embodiment, where (A) is a perspective view of a main part and (B) is a perspective view showing a crimping material. [Figure 4] FIG. 4 is a plan view showing a braided bus bar with a conventional structure. DETAILED DESCRIPTION OF THE INVENTION

[0011] 1, the braided busbar 10 according to the first embodiment includes a terminal 12 and a terminal 13 at both ends along the longitudinal direction of a braided conductive portion 11. The conductive portion 11 has a braided structure in which thin copper wires or the like are bundled, and the terminals 12 and 13 are fixed to both ends by crimp welding or the like.

[0012] In braided busbar 10, widths A and B at both ends of conductive portion 11 are asymmetric, with width B at one end facing terminal 13 being narrower than width A at the other end facing terminal 12. In braided busbar 100 of the conventional structure, terminals 102 and 103 at both ends of conductive portion 101 have the same width A, as shown in FIG.

[0013] In the braided busbar 10, the braid structure of the conductive portion 11 is asymmetrical in the widths A and B of both ends as described above, so that one end of the braid is narrowed, and this one end can have excess length (a state in which the braid sags slightly) in three dimensions (the width direction x of the conductive portion 11, the longitudinal direction y of the conductive portion 11, and the thickness direction z of the conductive portion 11), thereby enhancing the effect of the braid structure in absorbing the above-mentioned three-dimensional movement.

[0014] 1(B) shows the absorption state of the relative movement caused by vibrations, etc., between one end and the other end of the conductive part 11. According to this, the movement can be absorbed in the left and right direction of the conductive part 11 by the braided structure.

[0015] Therefore, this embodiment provides the following advantageous effects. (a) Since the width B of one end of the conductive portion 11 of the braided structure is narrower than the width A of the other end, it is possible to provide excess length in part of the braid (a state in which the braid is slightly loose), thereby enhancing the effect of the braided structure in absorbing movement.

[0016] (b) Due to the above (a), when assembling the braided busbar 10, it is no longer necessary to strictly define the positional relationship between the assembling positions of both ends of the braided busbar 10, and variations in the assembling positions can be expected to be absorbed.

[0017] (c) As a result of the above (a), even if the magnitude of external vibrations acting on the braided busbar 10 exceeds expectations, the braided structure of the braided busbar 10 can easily absorb the amount of movement, thereby preventing breakage due to complex vibrations, etc. In other words, the vibration resistance of the relay portion of the conductive portion 11 of the braided busbar 10 can be improved.

[0018] Therefore, there is no need to design braided busbar 10 that can withstand extremely large vibrations, taking into consideration compliance with regulations and market load conditions (such as situations where the busbar is exposed to an environment with complex vibration directions and extremely high vibrations).

[0019] As shown in FIG. 2, the braided busbar 20 according to the second embodiment is an example of an installation in which the widths A and B of one end and the other end are asymmetrical and there is a difference Δh in the z direction between the connection positions of both ends, when the braided conductive portion 21 has a terminal 22 at one end and a plate busbar-shaped terminal 23 at the other end.

[0020] In the braided busbar 20 of the second embodiment, by making the width B of one end of the conductive portion 21 narrower than the width A of the other end, it is possible to provide excess length in part of the braided structure, as with the braided busbar 10 of the first embodiment, and to enhance the movement absorption effect of the braided structure. In other words, even if there are mounting constraints between the terminals 22, 23 at both ends of the braided busbar 20, the ease of assembly and vibration resistance of the relay portion due to the conductive portion 21 can be improved with a relatively simple structure that simply changes the widths A, B of both ends of the conductive portion 21 relatively.

[0021] Unlike the braided busbars 10 and 20 described above in which terminals 12 and 22 at one end and terminals 13 and 23 at the other end are crimp-welded to the conductive portions 11 and 21, the braided busbar 30 according to the third embodiment has terminals 32 and 33 (terminal 32 not shown) crimped to both ends of the conductive portion 31 using a crimping material 34. In this braided busbar 30, by making one end of the braided conductive portion 31 narrower in width than the other end, the movement absorption effect of the braided structure can be improved, as in the braided busbars 10 and 20 described above.

[0022] Although an embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration of the present invention is not limited to this embodiment, and the present invention also includes design changes and the like that do not deviate from the gist of the present invention. [Industrial Applicability]

[0023] According to the present invention, the effect of absorbing the amount of movement due to the braided structure of the braided bus bar can be improved. [Explanation of symbols]

[0024] 10, 20, 30 Braided busbar 11, 21, 31 Conductive part 12, 22, 32 terminals Terminals 13, 23, and 33 A Width of the other end B Width of one end

Claims

[Claim 1] A braided busbar having a conductive portion with a braided structure, A braided busbar in which the width of one end of the conductive portion is narrower than the width of the other end.

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