JP6135569B2 - Wire harness manufacturing method and wire harness. - Google Patents

Description

  The present invention relates to a method for manufacturing a wire harness routed in an automobile or the like and a wire harness.

  DESCRIPTION OF RELATED ART Conventionally, the wire harness provided with the electric wire and the exterior member which the said electric wire is inserted and protects the said electric wire is known. Patent Literature 1 describes a wire harness including an electric wire and a corrugated tube having a shape in which the electric wire is inserted and a peak portion and a valley portion are alternately arranged along the axial direction of the electric wire. Yes. This corrugated tube can be bent and deformed by compressing or extending the crest and trough along the axial direction. In the wire harness described in Patent Document 1, by using a corrugated tube that can be bent and deformed as an exterior member, the corrugated tube is bent and deformed while protecting the electric wire by the corrugated tube. It can be transformed into a cord shape.

  Since the corrugated tube has a relatively low rigidity and is easily bent and deformed, the corrugated tube tends to return to the state before being bent and deformed by the elastic restoring force of the corrugated tube itself or the electric wire. It is difficult to maintain the routing shape. Therefore, in Patent Document 1, when a wire harness is routed in an automobile or the like, the wire harness is filled with a hot-melt adhesive in each of the valley portions of the corrugated tube that is bent and deformed to be cured. It is described that the arrangement shape of the is maintained.

JP 2013-42646 A

  The wire harness described in Patent Document 1 is such that the shape of the exterior member is maintained only by the hot melt adhesive that bonds the ridges of the corrugated tube corresponding to the exterior member. It is difficult to hold with rigidity.

  Moreover, in the wire harness described in Patent Document 1, in order to maintain the shape of the exterior member, each valley portion of the exterior member needs to be filled with a hot-melt adhesive, and each valley portion Since it is necessary to cure the hot melt adhesive filled in each of the above, the manufacturing process becomes complicated.

  The present invention has been made from the above viewpoint, and an object of the present invention is to provide a method for manufacturing a wire harness capable of holding a wiring shape of a bendable deformable exterior member with sufficient rigidity in a simple process. An object of the present invention is to provide a wire harness that can hold the wiring shape of an exterior member that can be bent and deformed with sufficient rigidity.

  The method for manufacturing a wire harness according to the present invention has a cylindrical shape surrounding a hollow portion, a plurality of peak portions that bulge toward the outer side in the radial direction of the hollow portion, and an outer diameter smaller than the outer diameter of the peak portion. A step of preparing an exterior member that can be elastically bent and deformed by having a shape in which a plurality of valley portions having a diameter and an inner diameter smaller than the inner diameter of the peak portion are alternately arranged along the axial direction; and A step of inserting an electric wire into the hollow portion, a step of bending and deforming the electric wire and the exterior member into which the electric wire is inserted, and a predetermined wiring shape. The step of arranging the heat shrink member so as to surround the outer peripheral surface of the exterior member in the circumferential direction of the exterior member, and the radial direction of the exterior member so as to contact the outer peripheral surface of the exterior member by heating the heat shrink member Shrink to this Ri and a step of holding the wiring shape of the outer member of inserting the electric wire.

  According to the above-described method for manufacturing a wire harness, the wiring shape of the exterior member can be held with sufficient rigidity simply by heating the heat-shrinkable member disposed so as to surround the exterior member in the circumferential direction. Specifically, in the above-described wire harness, the heat-shrinkable member contracts in the radial direction of the exterior member by heating and comes into contact with the outer peripheral surface of the exterior member, so that the electric wire located in the hollow portion of the exterior member and the exterior member Can be constrained, and thereby the routing shape can be maintained. Further, the polymerization of the exterior member and the heat shrinkable member in the radial direction of the exterior member significantly increases the rigidity of the protective member constituted by the exterior member and the heat shrinkable member. It can be held with sufficient rigidity.

  In the step of arranging the heat-shrinkable member, the step of arranging the heat-shrinkable member so as to surround a part in the axial direction of the exterior member in the circumferential direction of the exterior member and maintaining the routing shape of the exterior member The heat shrinkable member is contracted in the radial direction of the exterior member so as to be in contact with a part of the outer peripheral surface in the axial direction of the exterior member, thereby holding the part in a predetermined routing shape, and It is preferable that the remaining portion in the axial direction of the exterior member is exposed from the heat shrinkable member so that the remaining portion can be bent and deformed.

  In the method of manufacturing the wire harness described above, the outer member can protect the electric wire over a long region in the axial direction of the outer member, and the heat shrink member is provided only in a part of the outer member in the axial direction. Since the wire harness can be configured by the wiring shape holding portion provided with the contraction member and the bending deformation free portion where the exterior member is exposed from the heat contraction member, the axis of the exterior member that needs to maintain the wiring shape Only a part of the direction can be efficiently held with a small number of heat-shrinkable members.

  The wire harness according to the present invention includes an electric wire, a plurality of ridges that bulge toward the outside in the radial direction of the electric wire, and an outer diameter that is smaller than the outer diameter of the ridge, A plurality of valley portions having an inner diameter smaller than the inner diameter of the peak portion are alternately arranged along the axial direction of the electric wire, and can be bent and deformed into a predetermined wiring shape with the electric wire inserted. The outer member and the outer peripheral surface of the outer member are surrounded in the circumferential direction of the outer member and contracted in the radial direction of the outer member so as to be in contact with the outer peripheral surface of the outer member, whereby the electric wire is inserted A shrinkage holding member for holding the routing shape of the exterior member.

  In the above-described wire harness, the shrinkage holding member that surrounds the exterior member in the circumferential direction contracts in the radial direction of the exterior member so as to contact the outer peripheral surface of the exterior member. In addition to being able to be held with high rigidity and being able to protect the electric wire inserted into the exterior member with the contraction holding member in addition to the exterior member, the electric wire is compared with the case where the contraction holding member is not provided. Can be effectively protected.

  The contraction holding member holds a part of the exterior member in the axial direction in a predetermined routing shape, and a remaining part in the axial direction of the exterior member can be bent and deformed by being exposed from the contraction member. preferable.

  In the above wire harness, the outer member can protect the electric wire over a long region in the axial direction of the outer member, and the heat shrink member is provided only in a part of the outer member in the axial direction. The wire harness is routed while the remaining part in the axial direction of the exterior member is freely deformed while efficiently holding only a part of the exterior member in the axial direction of the exterior member that needs to be retained efficiently. Can do.

  The shrinkage holding member is provided at each of a plurality of portions in the axial direction of the exterior member, and a portion between the shrinkage holding members of the exterior member is bent by being exposed from each shrinkage holding member. It can be deformed.

  In said wire harness, the said wire harness can be routed, changing the site | part between each shrinkage | contraction holding member among exterior members freely.

  The exterior member is provided along the axial direction of the exterior member and has a slit for dividing the exterior member in the circumferential direction and for inserting the electric wire into the exterior member, and the contraction holding member Preferably, the outer peripheral surface of the exterior member is surrounded in the circumferential direction of the exterior member so as to block at least a part of the slit in the axial direction of the exterior member.

  In the above wire harness, the electric wire can be easily inserted into the exterior member through the slit, and the shrinkage holding member that surrounds the exterior member in which the electric wire is inserted in the circumferential direction is the slit in the axial direction of the exterior member. Since at least a part is closed, it is possible to prevent the slit from spreading in the width direction by the shrinkage holding member, and thereby it is possible to prevent the electric wire inserted into the exterior member from coming out of the exterior member through the slit.

  A part of the shrinkage holding member in the circumferential direction is a thick part having a larger thickness in the radial direction of the shrinkage holding member than the remaining part of the shrinkage holding member in the circumferential direction. It is preferable to extend along the axial direction of the exterior member.

  In the above-described wire harness, the thick portion that is a part in the circumferential direction of the shrinkage holding member extends along the axial direction of the exterior member. The routing shape can be held with more sufficient rigidity.

  As described above, according to the present invention, a method for manufacturing a wire harness capable of holding the wiring shape of a bendable deformable exterior member with sufficient rigidity, and a bendable deformable exterior member. There is provided a wire harness that can hold the wiring configuration with sufficient rigidity.

It is a schematic plan view which shows the wire harness which concerns on this embodiment. It is a schematic sectional drawing of the axial direction which shows the principal part of the wire harness which concerns on this embodiment. It is a schematic sectional drawing of the radial direction which shows the principal part of the wire harness which concerns on this embodiment. It is a figure which shows the state by which the electric wire was inserted in the exterior member in the manufacturing process of the wire harness which concerns on this embodiment. It is a figure which shows the state which wound the heat contraction member around the exterior member in the manufacturing process of the wire harness which concerns on this embodiment. It is a schematic sectional drawing of the axial direction which shows the principal part of the modification in the wire harness which concerns on this embodiment, Comprising: The site | part similar to FIG. 3 is shown. It is a schematic plan view which shows the other modification in the wire harness which concerns on this embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. However, for convenience of explanation, the drawings to be referred to below show simplified main members necessary for explaining the present invention, among the constituent members of one embodiment of the present invention. Therefore, the wire harness according to the present invention can include any constituent member that is not shown in the drawings referred to in this specification.

  FIG. 1 shows a wire harness X1 that is a product manufactured by the manufacturing method according to the present embodiment. The wire harness X1 includes a curved portion C1 having a curved shape, and two straight portions S1 that are located in the axial direction of the wire harness X1 with the curved portion C1 interposed therebetween and have a linear shape. . The wire harness X1 is routed, for example, in an automobile or the like by a routing shape having the curved portion C1 and the straight portions S1.

  The wire harness X <b> 1 includes an electric wire 1, an exterior member 2, and a shrinkage holding member 3. Hereinafter, the respective members included in the wire harness X1 will be described in detail with reference to FIGS. 2 and 3 in addition to FIG.

  For example, when the wire harness X1 is routed to an automobile or the like, the electric wire 1 is connected to various electronic devices or electrical components included in the automobile or the like. The electric wire 1 is constituted by, for example, a conductor made of a highly conductive metal material such as copper and an insulating coating made of a synthetic resin material that covers the conductor and has insulation properties. In addition, the number of the electric wires 1 is arbitrary, and can be appropriately changed according to the number of electronic devices or electrical components included in the automobile or the like in which the wire harness X1 is routed.

  The exterior member 2 is a member that protects the electric wire 1. The exterior member 2 is a cylindrical member extending along the axial direction of the electric wire 1 and has a hollow portion 21 into which the electric wire 1 is inserted. In this embodiment, since the exterior member 2 extends long along the axial direction of the electric wire 1, the electric wire 1 inserted into the hollow portion 21 can be protected over a long region in the axial direction. The electric wire 1 inserted into the exterior member 2 and the hollow portion 21 of the exterior member 2 has a shape corresponding to the curved portion C1 and each linear portion S1 of the wire harness X1. The exterior member 2 is made of a synthetic resin material having elasticity, for example.

  The exterior member 2 has a shape in which a plurality of peak portions 22 and a plurality of valley portions 23 are alternately arranged along the axial direction of the electric wire 1. Each peak portion 22 bulges outward in the radial direction of the electric wire 1 inserted into the hollow portion 21, and has an inner peripheral surface 22A that surrounds the electric wire 1 in the circumferential direction, and the opposite side of the inner peripheral surface 22A. And an outer peripheral surface 22B located at the same position. On the other hand, each trough 23 surrounds the electric wire 1 in the circumferential direction and has an inner peripheral surface 23A having a smaller diameter than the inner peripheral surface 22A of each peak 22 and the opposite side of the inner peripheral surface 23A. And an outer peripheral surface 23B having a smaller diameter than the outer peripheral surface 22B of each mountain portion 22. For this reason, the electric wire 1 inserted into the hollow portion 21 of the exterior member 2 is restricted in displacement in the radial direction of the electric wire 1 by the inner peripheral surface 23A of the valley portion 23, thereby the inner peripheral surface 22A of the peak portion 22 and Are held apart. The exterior member 2 can be bent and deformed into a predetermined routing shape by compressing or extending the peak portion 22 and the valley portion 23 in the axial direction of the exterior member 2.

  In the present embodiment, the exterior member 2 further includes a slit 24 for easily inserting the electric wire 1 into the hollow portion 21 of the exterior member 2. The slit 24 is provided along the axial direction of the exterior member 2 and divides the exterior member 2 in the circumferential direction. The slit 24 may not be provided.

  The shrinkage holding member 3 is provided corresponding to the curved portion C1 of the wire harness X1, and surrounds the exterior member 2 in the curved portion C1 in the circumferential direction. Specifically, the contraction holding member 3 has a first end 31 and a second end 32 which are both ends in the circumferential direction of the contraction holding member 3, and the outer peripheral surface of the first end 31 The outer peripheral member 2 in the curved portion C1 is surrounded in the circumferential direction by bonding the inner peripheral surface of the second end portion 32 with an adhesive (not shown). The portion where the first end portion 31 and the second end portion 32 overlap in the shrinkage holding member 3 is thicker in the radial direction of the shrinkage holding member 3 than the other portions in the circumferential direction of the shrinkage holding member 3. Becomes a thick portion 33, and the thick portion 33 extends along the axial direction of the exterior member 2.

  The contraction holding member 3 is in contact with the exterior member 2 by contracting in the radial direction of the exterior member 2. Specifically, the shrinkage holding member 3 surrounding the exterior member 2 corresponding to the curved portion C1 in the circumferential direction contracts in the radial direction of the exterior member 2, so that each peak portion 22 of the exterior member 2 It is in contact with the outer peripheral surface 22B. Thereby, the exterior part 2 and the shrinkage | contraction holding member 3 which mutually overlap | superposed in the radial direction of the said electric wire 1 are provided in the curved part C1 of the wire harness X1 so that the electric wire 1 may be surrounded in the circumferential direction.

  The wire harness X1 described above is reasonably and easily manufactured by a method including the steps shown in FIGS. Below, in addition to FIGS. 1-3, the manufacturing method of the wire harness X1 is demonstrated in detail, referring FIG. 4 and FIG.

1) Insertion step of electric wire into exterior member In this step, first, the electric wire 1 and the exterior member 2 are prepared. For example, the electric wire 1 includes a conductor made of a highly conductive metal material such as copper and an insulating coating made of a synthetic resin material that covers the conductor and has an insulating property, and is produced by extrusion molding. . The exterior member 2 is formed by, for example, a synthetic resin material so that it can be elastically bent and deformed. The exterior member 2 has a cylindrical shape that surrounds the hollow portion 21, and has a plurality of peak portions 22 that bulge outward in the radial direction of the hollow portion 21, an inner diameter smaller than the inner diameter of the peak portion 22, and the peak The plurality of valley portions 23 having an outer diameter smaller than the outer diameter of the portion 22 have a shape alternately arranged along the axial direction. The exterior member 2 is formed with a slit 24 that extends along the axial direction of the exterior member 2 and divides the exterior member 2 in the circumferential direction.

  Next, as shown in FIG. 4, the electric wire 1 is inserted into the hollow portion 21 of the exterior member 2. Specifically, the electric wire 1 is accommodated in the hollow portion 21 of the exterior member 2 through the slit 24 by widening the slit 24 of the exterior member 2 in the width direction. The electric wire 1 positioned in the hollow portion 21 of the exterior member 2 is restricted in displacement in the axial direction by the inner peripheral surface 23 </ b> A of each valley portion 23, and is thereby held apart from the inner peripheral surface 22 </ b> A of each peak portion 22. Is done.

  The slit 24 may not be provided in the exterior member 2, and in this case, the electric wire 1 is inserted into the hollow portion 21 of the exterior member 2 along the axial direction of the exterior member 2.

2) Arrangement process of heat-shrinkable member In this process, first, a sheet-like heat-shrinkable member 4 is prepared. The heat shrinkable member 4 corresponds to the shrinkage holding member 3 in the wire harness X1, and is a member that can be shrunk by heating. The heat-shrinkable member 4 is composed of, for example, a polyolefin, a fluorine-based polymer, a thermoplastic elastomer, or the like as a main raw material.

  Next, as shown in FIG. 5, the heat-shrinkable member 4 is disposed so as to surround a portion of the exterior member 2 that is bent and deformed into a predetermined routing shape in the circumferential direction. Specifically, first, the exterior member 2 in which the electric wire 1 is inserted is bent and deformed, so that the exterior member 2 is deformed into a predetermined wiring shape. Then, in a state where the exterior member 2 is deformed into a predetermined wiring shape, the sheet-like heat shrinkable member 4 is wound around a portion of the exterior member 2 that is bent and deformed. At this time, the first end portion 41 and the second end portion 42 of the sheet-like heat shrinkable member 4 are overlapped in the radial direction of the exterior member 2, and the overlapped first end portion 41 and second end portion 42 are overlapped. Is adhered by an adhesive, so that the heat shrinkable member 4 is disposed so as to surround the exterior member 2 in the circumferential direction.

  The heat-shrinkable member 4 does not have to be in the form of a sheet. For example, the heat-shrinkable member 4 is disposed so as to surround the exterior member 2 in the circumferential direction when the exterior member 2 is inserted into the tubular heat-shrinkable member 4. May be.

3) Heat Shrinkage Member Heating Step In this step, the heat disposed so as to surround the portion of the exterior member 2 that is bent and deformed in the circumferential direction in a state where the exterior member 2 is deformed into a predetermined routing shape. The contraction member 4 is heated. The heat-shrinkable member 4 is contracted in the radial direction of the exterior member 2 by the heating, so that the heat-shrinkable member 4 is brought into contact with the outer peripheral surface 22B of each mountain portion 22 in the exterior member 2. The member 2 and the heat shrinkable member 4 are polymerized. The heat-shrinkable member 4 thus contracted restricts the movement of the exterior member 2 and the electric wire 1 located in the hollow portion 21 of the exterior member 2, thereby maintaining the routing shape of the exterior member 2. From the above, the manufacture of the wire harness X1 shown in FIGS. 1 to 3 is completed.

  In the method of manufacturing the wire harness X1, the electric wire 1 is inserted into the elastically bendable outer packaging member 2 to protect the electric wire 1 over a long region in the axial direction of the outer packaging member 2, while the electric wire 1 is protected. By bending and deforming the exterior member 2 in a state where the electric wire 1 is inserted, the wiring shape can be freely deformed, and only by heating the heat shrinkable member 4 arranged so as to surround the exterior member 2 in the circumferential direction, The routing shape of the exterior member 2 can be held with sufficient rigidity. Specifically, in the method for manufacturing the wire harness X1, the heat shrinkable member 4 is contracted in the radial direction of the exterior member 2 by heating and is in contact with the outer peripheral surface 22B of the mountain portion 22 in the exterior member 2. The movement of the electric wire 1 located in the hollow part 21 of the member 2 and the exterior member 2 is restricted, and thereby the routing shape can be maintained. Further, due to the shrinkage of the heat shrinkable member 4 due to the heating, the exterior member 2 and the heat shrinkable member 4 are superposed on each other in the radial direction of the exterior member 2, so that the exterior member 2 and the heat shrinkable member 4 are configured. Thus, the rigidity of the protective member can be remarkably increased, whereby the routing shape of the exterior member 2 can be held with sufficient rigidity.

  Furthermore, in the method of manufacturing the wire harness X1, the heat shrink member 4 is provided so as to surround only the portion of the exterior member 2 that is bent and deformed in the circumferential direction. 2, it is possible to effectively hold a portion where the wiring shape is hardly held by the elastic restoring force of the exterior member 2 and the electric wire 1.

  In addition, in the manufacturing method of said wire harness X1, although the heat contraction member 4 is provided so that only the site | part bent in the exterior member 2 may be enclosed in the circumferential direction, it is not restricted to this, The heat contraction member 4 is exterior. What is necessary is just to be provided in the site | part which wants to maintain the routing shape among the members 2. FIG. For example, the heat-shrinkable member 4 is disposed so as to surround a portion of the exterior member 2 that is not bent and deformed in the circumferential direction, and is contracted in the radial direction of the exterior member 2 so as to be in contact with the portion by heating. The linear shape may be maintained.

  Furthermore, in the manufacturing method of the wire harness X1, the heat shrinkable member 4 is heated in a state where the inner peripheral surface 22A of the mountain portion 22 in the exterior member 2 and the electric wire 1 are separated from each other. Can be suppressed. Specifically, when the heat-shrinkable member 4 is heated and contracted so as to be in contact with the outer peripheral surface 22B of the peak portion 22 of the exterior member 2, the heat applied to the heat-shrinkable member 4 is the heat-shrinkable member 4. In the manufacturing method of the wire harness X1 described above, the displacement in the radial direction of the electric wire 1 is regulated by the inner peripheral surface 23A of the valley portion 23, whereby the electric wire 1 And the inner peripheral surface 22A of the peak portion 22 are separated from each other so as not to contact each other, so that heat can be prevented from being transferred from the peak portion 22 to the electric wire 1, thereby It can suppress that the electric wire 1 located in the hollow part 21 of the exterior member 2 deteriorates.

  Furthermore, in the manufacturing method of the wire harness X1, the sheet-like heat shrinkable member 4 is wound around the exterior member 2, and the first end 41 and the second end 42 of the heat shrinkable member 4 are Since it adhere | attaches so that it may superpose | polymerize in a radial direction, the rigidity of the exterior member 2 hold | maintained at the heat contraction member 4 can be improved more effectively by a simple process. Specifically, in the method for manufacturing the wire harness X1, the first end 41 and the second end 42 of the heat shrinkable member 4 are simply bonded so as to be polymerized in the radial direction of the exterior member 2, The heat-shrinkable member 4 is disposed so as to surround the exterior member 2 in the circumferential direction, and the overlapping portion of the first end portion 41 and the second end portion 42 is compared with other portions in the circumferential direction of the heat-shrinkable member 4. And since it becomes thickness, the rigidity of the exterior member 2 can be improved more effectively by this.

  Furthermore, in the manufacturing method of the wire harness X1, the heat-shrinkable member 4 is shrunk by heating, so that the heat-shrinkable member 4 blocks a part of the slit 24 in the axial direction of the exterior member 2, thereby It can suppress that 24 spreads in the width direction. For this reason, in the manufacturing method of said wire harness X1, the electric wire 1 will come out of the exterior member 2 through the said slit 24, without performing troublesome work, such as closing the slit 24, for example by sticking a tape member. Can be suppressed.

  As mentioned above, although the manufacturing method of the wire harness X1 and the wire harness X1 was demonstrated in detail, this invention is not limited to these, A various deformation | transformation is possible.

  In the wire harness X <b> 1, the thick portion 33 is configured by the outer peripheral surface of the first end portion 31 and the inner peripheral surface of the second end portion 32 of the contraction holding member 3 overlapping in the radial direction of the exterior member 2. However, the present invention is not limited thereto, and the thick portion 33 only needs to be thicker than a portion of the contraction holding member 3 in the circumferential direction compared to the remaining portion in the circumferential direction.

  For example, as shown in FIG. 6, the inner peripheral surface of the first end portion 31 and the inner peripheral surface of the second end portion 32 of the contraction holding member 3 are bonded by an adhesive (not shown), and the first end portion 31 and The thick portion 33 may be configured by the second end portion 32 extending outward in the radial direction of the exterior member 2.

  In the wire harness X1, the contraction holding member 3 holds the routing shape of the exterior member 2 corresponding to the curved portion C1, so that the wire harness X1 has a routing shape having the curved portion C1 and each straight portion S1. However, the present invention is not limited to this, but is not limited to this, and the remaining wiring shape in the axial direction is deformed while the shrinking holding member 3 holds a partial wiring shape in the axial direction of the exterior member 2. It may be routed to a car or the like.

  For example, as shown in FIG. 7, by providing two contraction holding members 3 corresponding to two locations in the axial direction of the exterior member 2, the two locations serve as the routing shape holding portions H1, and each routing shape holding portion A portion where the exterior member 2 is exposed from the contraction holding member 3 between H1 may be a bending deformation free portion F1. In the wire harness X1 shown in FIG. 7, the exterior member 2 can protect the electric wire 1 over a long region in the axial direction of the exterior member 2, and holds the wiring shape before wiring to an automobile or the like. Each of the wiring shape holding portions H1 to be held is efficiently held by a small number of shrinkage holding members 3, and the bending deformation free portion F1 positioned between the wiring shape holding portions H1 is freely deformed when wiring to an automobile or the like. The routing can be performed while

X1 Wire harness 1 Electric wire 2 Exterior member 21 Hollow part 22 Mountain part 23 Valley part 24 Slit 3 Shrinkage holding member 33 Thick part 4 Heat shrinkable member

Claims (7)

A cylindrical shape surrounding the hollow part, a plurality of peak parts bulging outward in the radial direction of the hollow part, an outer diameter smaller than the outer diameter of the peak part, and an inner diameter smaller than the inner diameter of the peak part A step of preparing an exterior member that can be elastically bent and deformed by having a shape in which a plurality of troughs having a shape alternately arranged along the axial direction;
Inserting an electric wire into the hollow portion of the exterior member;
A step of bending the wire and the exterior member into which the wire is inserted into a predetermined wiring shape;
Arranging the heat shrink member so as to surround the outer peripheral surface of the exterior member transformed into the predetermined routing shape in the circumferential direction of the exterior member;
Heating the heat-shrinkable member to shrink in the radial direction of the exterior member so as to be in contact with the outer peripheral surface of the exterior member, thereby maintaining the routing shape of the exterior member into which the electric wire has been inserted. The manufacturing method of the wire harness provided. In the step of arranging the heat shrinkable member, the heat shrinkable member is arranged so as to surround a part in the axial direction of the exterior member in the circumferential direction of the exterior member,
In the step of maintaining the routing shape of the exterior member, the heat shrink member is contracted in the radial direction of the exterior member so as to be in contact with a part of the outer peripheral surface in the axial direction of the exterior member. The wire harness manufacturing according to claim 1, wherein the wire harness is held in a predetermined wiring shape, and the remaining portion in the axial direction of the exterior member is exposed from the heat-shrinkable member so that the remaining portion can be bent and deformed. Method. Electric wires,
The wire is inserted, and has a plurality of ridges that bulge outward in the radial direction of the wire, an outer diameter that is smaller than the outer diameter of the ridge, and an inner diameter that is smaller than the inner diameter of the ridge. A plurality of troughs and a shape alternately arranged along the axial direction of the electric wire, and an exterior member that can be bent and deformed into a predetermined routing shape in a state where the electric wire is inserted,
The outer circumferential surface of the exterior member is surrounded in the circumferential direction of the exterior member, and contracted in the radial direction of the exterior member so as to be in contact with the outer circumferential surface of the exterior member, thereby arranging the exterior member into which the electric wire is inserted. A wire harness comprising: a shrinkage holding member that holds a cord shape. The shrinkage holding member holds a part of the exterior member in the axial direction in a predetermined routing shape,
The wire harness according to claim 3, wherein the remaining portion in the axial direction of the exterior member can be bent and deformed by being exposed from the contraction member. The shrinkage holding member is provided at each of a plurality of portions in the axial direction of the exterior member,
The wire harness according to claim 4, wherein a portion of each of the exterior members between the respective shrinkage holding members can be bent and deformed by being exposed from each of the shrinkage holding members. The exterior member is provided along the axial direction of the exterior member and divides the exterior member in the circumferential direction, and has a slit for inserting the electric wire into the exterior member,
The shrinkage holding member surrounds the outer peripheral surface of the exterior member in the circumferential direction of the exterior member so as to close at least a part of the slit in the axial direction of the exterior member. The wire harness as described in the item. A part in the circumferential direction of the contraction holding member is a thick part having a large thickness in the radial direction of the contraction holding member as compared with the remaining part in the circumferential direction of the contraction holding member.
The said thick part is a wire harness as described in any one of Claims 3-6 extended along the axial direction of the said exterior member.

Images