JP2018041643A - Wire Harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology capable of fixing a plurality of long-sized flat metal plates with each other while easily electrically connecting these.SOLUTION: A wire harness 10 includes: a first flat wire 20A containing a first metal plate 22A having one flat cross-sectional surface; a second flat wire 20B that contains a second metal plate 22B having one flat cross-sectional surface and is overlapped in a thickness direction to the first flat wire 20A; and an engagement part that is engaged with a through hole 24A formed in the first metal plate 22A in a state where the first metal plate 22A and the second metal plate 22B abut and fixes the first metal plate 22A and the second metal plate 22B while electrically connecting these.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a wire harness mounted on a vehicle.

  Patent Document 1 discloses a wire harness in which a plurality of flat cables each having a conductor composed of an assembly in which a plurality of conductor units are arranged in a plane direction are overlapped.

  In the flat cable described in Patent Document 1, it is troublesome to cover a plurality of conductor units in a state where they are arranged in a plane direction. Therefore, in order to obtain a flat cable that is easy to manufacture, it is conceivable to form the conductor with a single metal plate.

  Here, Patent Document 2 discloses a technique for forming a single conductive path by connecting a plurality of metal plates.

JP 2010-282748 A German Utility Model Application Publication No. 202013103854 Specification

  In Patent Document 2, the metal plates are fixed while being electrically connected by welding. However, when metal plates are welded to each other, such labor may be increased.

  Then, an object of this invention is to provide the technique which can be fixed, connecting a some elongate flat metal plate easily and electrically.

  In order to solve the above-mentioned problem, a wire harness according to a first aspect includes a first flat electric wire including a first metal plate having a flat cross section, and a second metal plate having a flat cross section, The second flat electric wire stacked in the thickness direction with respect to the first flat electric wire, and the through hole formed in the first metal plate in a state where the first metal plate and the second metal plate are in contact with each other. And a locking portion for fixing the first metal plate and the second metal plate while being electrically connected to each other.

  The wire harness which concerns on a 2nd aspect is a wire harness which concerns on a 1st aspect, Comprising: It forms integrally with the said 2nd metal plate in the aspect which protrudes in a thickness direction from the said 2nd metal plate, and the said Protrusions that are inserted through the through holes are provided.

  The wire harness which concerns on a 3rd aspect is a wire harness which concerns on a 2nd aspect, Comprising: A through-hole is formed in the said 2nd metal plate, and the said protrusion part protrudes from the periphery of the said through-hole.

  The wire harness which concerns on a 4th aspect is a wire harness which concerns on a 2nd or 3rd aspect, Comprising: The front-end | tip of the said protrusion part is formed in a retaining shape, and is crushed, and the said latching | locking part is comprised. Yes.

  The wire harness according to a fifth aspect is the wire harness according to any one of the first to fourth aspects, wherein a through hole is formed in the second metal plate, and the locking portion is the first part. A stud bolt passed through the through hole of the metal plate and the second metal plate; and a nut screwed into the stat bolt.

  A wire harness according to a sixth aspect is the wire harness according to any one of the first to fourth aspects, wherein a through hole is formed in the second metal plate, and the locking portion is the first harness. A rivet passed through the through hole of the metal plate and the second metal plate is included.

  According to the first to sixth aspects, the first metal plate and the second metal plate are fixed while being electrically connected by the locking portion being locked in the through hole. Thereby, a some long flat metal plate can be fixed, electrically connecting easily.

  In particular, according to the second aspect, the first metal plate and the second metal plate are less likely to be displaced.

  In particular, according to the third aspect, for example, a part of the second metal plate can be bent to form the protruding portion.

  In particular, according to the 4th aspect, a latching | locking part can be provided easily.

  In particular, according to the fifth aspect, for example, by using a stud bolt provided in the vehicle body, in addition to electrical conduction and fixation between the first metal plate and the second metal plate, the wire harness to the vehicle body is provided. Fixing can be performed.

  In particular, according to the sixth aspect, electrical conduction and fixation between the first metal plate and the second metal plate can be easily achieved.

It is a top view which shows the wire harness which concerns on 1st Embodiment. It is sectional drawing cut | disconnected along the II-II line | wire of FIG. It is explanatory drawing which shows the manufacturing method of the wire harness which concerns on 1st Embodiment. It is explanatory drawing which shows the manufacturing method of the wire harness which concerns on 1st Embodiment. It is explanatory drawing which shows the manufacturing method of the wire harness which concerns on 2nd Embodiment. It is a schematic sectional drawing which shows the wire harness which concerns on 2nd Embodiment. It is a schematic sectional drawing which shows the modification of the wire harness which concerns on 2nd Embodiment. It is a schematic sectional drawing which shows the wire harness which concerns on 3rd Embodiment.

{First embodiment}
Hereinafter, the wire harness according to the first embodiment will be described. FIG. 1 is a plan view showing a wire harness 10 according to the first embodiment. 2 is a cross-sectional view taken along the line II-II in FIG.

  The wire harness 10 is used as a wiring member that electrically connects a battery and a DC-DC converter, a starter / generator, an inverter, or the like in a vehicle, for example. In the wire harness 10, a plurality (two in this case) of flat electric wires 20 having a flat cross section are stacked in the thickness direction. In the example shown in FIG. 1, the two flat electric wires 20 are overlapped so that the extending directions intersect (orthogonal), but this is not always necessary.

  As described above, the flat electric wire 20 is easily formed by being formed to have a flat cross section. The flat electric wire 20 is particularly easy to bend in a direction perpendicular to the flat surface. Each flat electric wire 20 includes a metal plate 22 as a conductor. Each flat wire 20 may include an insulating coating 28 that covers the periphery of the metal plate 22.

  The metal plate 22 is a single sheet and has a flat cross section. The metal plate 22 is formed with a flat cross section so that it can be easily bent, and is particularly easy to bend in a direction perpendicular to the flat surface. The metal plate 22 is formed of a material such as copper, a copper alloy, aluminum, or an aluminum alloy. The metal plate 22 may be plated with metal such as tin or nickel. For example, a metal plate 22 having a thickness of 0.5 mm and a width of 100 mm is used. However, the dimensions of the metal plate 22 are not limited to those described above, and may be, for example, about 0.3 mm to 1 mm in thickness and about 50 mm to 200 mm in width. For example, the cross-sectional area may be set to 15 square millimeters or more.

  In the example shown in FIG. 1, the metal plate 22 and the insulating coating 28 of the two flat electric wires 20 have the same structure. Thereby, even when two flat electric wires 20 having different structures related to the locking portion are obtained, the flat electric wires 20 before forming the structure related to the locking portion can be shared, thereby suppressing an increase in cost. But the flat electric wire of the structure from which the metal plate 22 or the insulation coating 28 differs may be piled up, and the wire harness may be comprised.

  Hereinafter, when it is necessary to distinguish between the two flat electric wires 20 and the metal plate 22, one may be referred to as a flat electric wire 20A and a metal plate 22A, and the other may be referred to as a flat electric wire 20B and a metal plate 22B.

  The two metal plates 22 are fixed while being electrically connected by the presence of the locking portions. The locking portion is locked in a through hole 24A formed in the metal plate 22A.

  More specifically, the flat electric wires 20 are overlapped in such a manner that a part of each metal plate 22 is exposed and the exposed part of each metal plate 22 abuts. In the example shown in FIG. 1, the intermediate portions in the extending direction of the respective metal plates 22 overlap, but at least one of the metal plates 22 may overlap the end portion. Here, a through hole 24A is formed in the exposed portion of the metal plate 22A, and a protruding portion 26 is formed in the exposed portion of the metal plate 22B. The protruding portion 26 is formed integrally with the metal plate 22B so as to protrude in the thickness direction from the metal plate 22B. The protrusion 26 is inserted through the through hole 24A. The tip of the protruding portion 26 passes through the through hole 24A and is caught by the periphery of the through hole 24A. Further, here, a through hole 24B is formed in the metal plate 22B, and the protruding portion 26 protrudes from the periphery of the through hole 24B. Accordingly, here, the peripheral edge of the through hole 24A in the metal plate 22A is in contact with the peripheral edge of the protruding portion 26 and the through hole 24B in the metal plate 22B.

  Such protrusions 26 and through holes 24B are formed, for example, by cutting a part of the metal plate 22B. More specifically, for example, an H-shaped notch is provided in the flat metal plate 22B before processing. Then, in the portion where the H-shaped cutout is formed, the two pieces cut out in three directions are bent in the same direction along the remaining one side. As a result, as shown in FIG. 3, the bent section forms the protruding portion 26, and the hole formed by bending the section forms the through hole 24B. It is preferable that the distance between the outer surfaces of the two sections is approximately the same as the size of the through hole 24A. Accordingly, the metal plate 22A and the metal plate 22B are less likely to rattle in a state where the protruding portion 26 is inserted into the through hole 24A.

  Here, the projecting portion 26 cut and raised is deformed to form a locking portion. More specifically, as shown in FIG. 4, the protruding portion 26 made of the cut piece is inserted into the through hole 24 </ b> A, and the metal plate 22 </ b> A and the metal plate 22 </ b> B are stacked and adhered in the thickness direction. The tip of the protruding part 26 is crushed by the press part 80. The press part 80 includes, for example, a pair of press plate parts 81 and 82 that sandwich the metal plate 22A and the metal plate 22B from the thickness direction. At this time, the press plate portion 81 on the protruding portion 26 side preferably has a convex portion 81a that fits between the two sections. Thereby, when crushing the front-end | tip of the protrusion part 26, it becomes easy to crush in the shape extended toward the periphery of 24 A of through-holes. The tip of the crushed protrusion 26 is locked to the surface of the metal plate 22A that faces away from the surface facing the metal plate 22B. Accordingly, here, the metal plate 22 </ b> A is sandwiched between the metal plate 22 </ b> B and the tip of the protruding portion 26. As a result, the metal plate 22A and the metal plate 22B come into contact with each other more reliably, thereby improving the reliability of electrical continuity between the two.

  At this time, as shown in FIGS. 3 and 4, the tip of the protruding portion 26 is preferably formed in a retaining shape before being crushed. For example, the tip of the protrusion 26 may be formed in a shape that is folded back toward the periphery of the through hole 24B. Accordingly, when the protruding portion 26 is inserted into the through hole 24A, the tip of the protruding portion 26 is hardly caught by the peripheral edge of the through hole 24A. Moreover, when crushing the tip of the protrusion 26, it becomes easy to crush into a shape that extends toward the periphery of the through hole 24A.

  According to the wire harness 10 configured as described above, the metal plate 22A and the metal plate 22B are fixed while being electrically connected by the locking portion being locked in the through hole 24A. Thereby, a plurality of long flat metal plates 22 can be fixed while being electrically connected easily. In particular, even after the flat electric wire 20A and the flat electric wire 20B are manufactured separately, the metal plates 22 can be easily fixed while being electrically connected to each other.

  Moreover, since the protrusion part 26 provided in the metal plate 22B is inserted through the through hole 24A, the metal plate 22A and the metal plate 22B are less likely to be displaced.

  Moreover, since the protrusion part 26 protrudes from the periphery of the through-hole 24B formed in the metal plate 22B, the protrusion part 26 can be formed by cutting and raising a part of the metal plate 22B, for example.

  Moreover, since the protrusion part 26 is crushed and it has comprised the latching | locking part, a latching | locking part can be provided easily. At this time, the reliability of electrical continuity can be improved by numerically managing the force when the pressing unit 80 presses.

  Further, by providing the through hole 24A and the through hole 24B, the cross-sectional areas of the metal plate 22A and the metal plate 22B in this portion are reduced. However, in this part, the metal plate 22A and the metal plate 22B come into contact with each other, so that the metal plate 22A and the metal plate 22B can be regarded as one conductive path, thereby suppressing the reduction in the cross-sectional area in the conductive path. it can.

{Second Embodiment}
Next, the wire harness which concerns on 2nd Embodiment is demonstrated. FIG. 5 is an explanatory view showing a method of manufacturing the wire harness 110 according to the second embodiment. FIG. 6 is a schematic cross-sectional view showing the wire harness 110 according to the second embodiment. In the description of the present embodiment, the same components as those described above are denoted by the same reference numerals, and description thereof is omitted.

  The wire harness 110 according to the second embodiment is different from the wire harness 10 according to the first embodiment in that the locking portion includes the stud bolt 40 and the nut 42.

  Here, in the wire harness 110, the flat electric wire 20 is the same as the flat electric wire 20 according to the first embodiment.

  Then, as shown in FIG. 5, after the protruding portion 26 of the metal plate 22B is inserted into the through hole 24A of the metal plate 22A and before crushing the tip of the protruding portion 26, the through hole 24A of the metal plate 22A. The stud bolt 40 is inserted through the through hole 24B of the metal plate 22B. As the stud bolt 40, for example, one that protrudes from the vehicle body panel 90 or the like can be used. Then, the nut 42 is screwed into the stud bolt 40 inserted through the through hole 24A and the through hole 24B. At this time, as shown in FIG. 6, the tip of the protruding portion 26 is crushed by the nut 42.

  According to the wire harness 110 configured as described above, for example, by using the stud bolt 40 provided in the vehicle body, in addition to electrical conduction and fixation between the metal plate 22A and the metal plate 22B, the wire harness 110 It can be fixed to the car body. Further, the reliability of electrical continuity can be improved by numerically managing the torque when the nut 42 is screwed.

  Further, when the stud bolt 40 and the nut 42 are used, in addition to the electrical conduction due to the contact between the metal plates 22, the electrical conduction between the metal plates 22 related to the contact between the stud bolt 40 and the nut 42 and the metal plate 22 is performed. Can be planned.

{Modification of Second Embodiment}
Here, the modification of the wire harness 110 which concerns on 2nd Embodiment is demonstrated, referring FIG. FIG. 7 is a schematic cross-sectional view showing a modification of the wire harness 110 according to the second embodiment.

  For example, when the locking portion includes the stud bolt 40 and the nut 42 as in the wire harness 110 according to the second embodiment, the protruding portion 26 may be omitted. Therefore, in the wire harness 210 according to the modified example, a flat electric wire 220B having a metal plate 222B in which the protruding portion 26 is omitted is employed instead of the flat electric wire 20B. The flat electric wire 20A is used as it is. In this case, the through hole 224B of the metal plate 222B is preferably formed to have the same size as the through hole 24A of the metal plate 22A.

{Third embodiment}
Next, the wire harness 310 according to the third embodiment will be described. FIG. 8 is a schematic cross-sectional view showing a wire harness 310 according to the third embodiment. In the description of the present embodiment, the same components as those described above are denoted by the same reference numerals, and description thereof is omitted.

  The wire harness 310 according to the third embodiment is different from the wire harness 10 according to the first embodiment in that the locking portion includes the rivet 50.

  Here, in the wire harness 310, as the flat electric wire 220B, the flat electric wire 220B according to the modified example of the second embodiment is used in which the protruding portion 26 is omitted. But the flat electric wire 20B in which the protrusion part 26 was provided like the wire harness 10 which concerns on 1st Embodiment may be used.

  The rivet 50 includes a head portion 52, a body portion 54, and leg portions 56. Then, with the body portion 54 inserted through the through hole 24A and the through hole 224B, the head 52 is locked to one of the metal plate 22A and the metal plate 222B (here, the metal plate 222B), and the leg portion 56 is The other of the metal plate 22A and the metal plate 222B (here, the metal plate 22A) is locked.

  Here, in the rivet 50 before locking, the leg portion 56 is formed in a hollow cylindrical shape having the same outer diameter as the body portion 54. The rivet 50 is inserted into the through hole 224B and the through hole 24A from the leg 56 side, and the leg portion 56 that has passed through the through hole 224B and the through hole 24A is bent from the tip to the outer peripheral side. As a result, the leg portion 56 is engaged with the outer surface of the metal plate 22A at the periphery of the through hole 24A. However, the structure of the rivet 50 is not limited to that described above. For example, a rivet that is formed hollow from the head to the leg may be employed. In the case of such a rivet, it is fastened as follows. That is, the shaft provided with a ball-shaped portion at the tip is passed through the hollow portion with the ball-shaped portion exposed to the outside of the leg portion. Then, when the shaft is pulled out from the head side in a state where the rivet is set in the through hole of the metal plate, the ball-shaped portion is accommodated inside the leg portion. Thereby, a ball-shaped part spreads a leg part to the outer peripheral side, and a leg part latches to 22 A of metal plates.

  When the rivet 50 is used, in addition to electrical conduction due to contact between the metal plates 22, electrical conduction between the metal plates 22 due to contact between the rivet 50 and the metal plate 22 may be achieved. For example, by using a rivet 50 made of copper or a copper alloy, electrical conduction between the metal plates 22 due to contact between the rivet 50 and the metal plate 22 can be achieved. At this time, by using the rivet 50 that partially bites into the metal plate 22, it is possible to improve the reliability of electrical conduction between the rivet 50 and the metal plate 22.

  According to the wire harness 310 configured as described above, the metal plate 22A and the metal plate 222B can be easily electrically connected and fixed by the rivet 50.

{Modifications}
In 1st Embodiment and 2nd Embodiment, although the line used as the crease | fold at the time of raising the protrusion part 26 is set in the direction parallel to the width direction of the metal plate 22B, this is not essential. A line that becomes a fold when the protruding portion 26 is cut up may be set in a direction parallel to the extending direction of the metal plate 22B, or set in a direction intersecting the width direction and the extending direction of the metal plate 22B. It may be.

  Moreover, in each embodiment, although the through-hole 24A was demonstrated as what was formed in the square shape, this is not essential. The through hole 24A may be formed in a circular shape, another square shape, or a shape in which a square shape and a circular shape are combined.

  In addition, each structure demonstrated by said each embodiment and each modification can be suitably combined unless it mutually contradicts.

  As described above, the present invention has been described in detail. However, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.

10, 110, 210, 310 Wire harness 20, 20A, 20B, 220B Flat electric wire 22, 22A, 22B, 222B Metal plate 24A, 24B, 224B Through hole 26 Projection 28 Insulation coating 40 Stud bolt 42 Nut 50 Rivet 52 Head 54 Torso 56 Leg

Claims (6)

A first flat electric wire including a first metal plate having a flat cross section;
A second flat electric wire including a second metal plate having a flat cross section and stacked in a thickness direction with respect to the first flat electric wire;
The first metal plate and the second metal plate are engaged with a through hole formed in the first metal plate in a state where the first metal plate and the second metal plate are in contact with each other, and the first metal plate and the second metal plate are electrically connected to each other. A locking portion to be fixed while being connected to,
A wire harness comprising: The wire harness according to claim 1,
A wire harness, wherein the second metal plate is provided with a protruding portion that is integrally formed in a manner protruding in the thickness direction from the second metal plate and inserted into the through hole. The wire harness according to claim 2,
A wire harness in which a through hole is formed in the second metal plate, and the protruding portion protrudes from a peripheral edge of the through hole. The wire harness according to claim 2 or 3, wherein
A wire harness in which a tip of the protruding portion is formed in a retaining shape and is crushed to form the locking portion. The wire harness according to any one of claims 1 to 4, wherein
A through hole is formed in the second metal plate;
The said latching | locking part is a wire harness containing the stud bolt penetrated by the said through-hole of the said 1st metal plate and the said 2nd metal plate, and the nut screwed together in the said stud bolt. The wire harness according to any one of claims 1 to 4, wherein
A through hole is formed in the second metal plate;
The said latching | locking part is a wire harness containing the rivet passed through the said through-hole of the said 1st metal plate and the said 2nd metal plate.

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