JP2020010455A - Electric wire sheath and electric wire harness with the same - Google Patents

Abstract

To provide an electric wire sheath capable of suppressing deformation of an attached portion and an electric wire harness with the same.SOLUTION: An electric wire sheath 3, formed by bending a resin sheet, attached to an outer periphery of an electric wire, includes: a plurality of walls 4 for forming a housing unit 6 for housing the electric wire; and an attachment part 5, extending outward from at least one of the plurality of walls 4 outwardly, formed by at least two sheet pieces 7, 8 facing each other. The attachment part 5 has: fixing portions 71, 81 in which one of ends 7a, 8a of the two sheet pieces 7, 8 facing each other are fixed to the walls 4 being apart from each other; and joining portions 73, 83 in which the other end of portions 7b, 8b of the two sheet pieces 7, 8 facing each other at position outwardly separated from the fixing portions 71, 81 at a predetermined distance are joined.SELECTED DRAWING: Figure 1

Description

  TECHNICAL FIELD The present invention relates to a sheath for a wire mounted on the outer periphery of a wire and a wire harness with the sheath.

  Conventionally, as an electric wire exterior body attached to the outer periphery of an electric wire routed in a vehicle or the like, a main body in which a plate material is formed in a rectangular cylindrical shape, and a wire bundle is housed inside the main body portion, A protector that protects a bundle from the outside is known (see Patent Document 1).

  This protector includes a plate-like member formed of paper or resin, which includes two plate-like members and an intervening portion disposed between the two plate-like members to form a hollow space between the plate-like members. By using this, the weight of the protector is reduced, and the shape formed by the plate-like member is liberalized.

JP 2017-127043 A

  As a method of attaching the protector to the vehicle body, there is a method of attaching a protector to the vehicle body by further forming an attachment portion in which a rectangular plate member extends outward from the main body portion and fixing the attachment portion to the vehicle body.

  However, when the protector is attached to the vehicle body, the position of the protector may deviate from the correct mounting position when the protector is attached to the vehicle body, so the function of the protector may be impaired. there were. Therefore, there is a need for a structure of an electric wire exterior body and a wire harness with an exterior body in which deformation of the attached part is suppressed.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide an electric wire exterior body and a wire harness with an exterior body that can suppress deformation of an attached portion.

  In order to achieve the above object, an electric wire exterior body of the present invention is an electric wire exterior body that is formed by bending a resin sheet and is attached to an outer periphery of an electric wire, and a housing portion that houses the electric wire. A plurality of wall portions to be formed, and an attachment portion extending outward from at least one wall portion of the plurality of wall portions and formed by at least two sheet pieces facing each other, wherein the attachment portion is A fixing portion fixed to the wall with one end of the two sheet pieces facing each other separated from each other, and the fixing portion fixed to the wall at a predetermined distance outward from the fixing portion. And a joining portion in which the other ends of the sheet pieces are joined to each other.

  In the sheath for electric wires according to one aspect of the present invention, a gap is formed between the fixing portion and the joining portion.

  In the electric wire exterior body according to one aspect of the present invention, the attachment portion is integrally formed by bending one resin sheet.

  In the sheath for electric wires according to one aspect of the present invention, the fixing portion of the attachment portion is fixed to an upper surface or a lower surface of the wall portion facing the resin sheet in the thickness direction.

  In the sheathing for an electric wire according to one aspect of the present invention, the attachment portion has an overlapping portion where the at least two sheet members overlap on the side opposite to the fixing portion from the joint portion, and the overlapping portion has Is formed with a through hole through which a mounting member that can be mounted on the vehicle body is inserted through the sheet piece in the thickness direction.

  In the electric wire exterior body according to one aspect of the present invention, an insertion hole into which the fixing portion is inserted is formed in the wall portion.

  In the sheath for electric wires according to one embodiment of the present invention, the predetermined interval is 5 mm or more and 30 mm or less.

  In the sheath for electric wires according to one aspect of the present invention, the resin sheet and the attachment portion are formed of a thermoplastic resin foam sheet.

  In order to achieve the above object, a wire harness with a sheath of the present invention includes a wire harness and the sheath for a wire, and the sheath for a wire is mounted on an outer periphery of the wire harness.

  ADVANTAGE OF THE INVENTION According to the exterior body for electric wires and the wire harness with an exterior body which concern on this invention, deformation | transformation of an attachment part can be suppressed.

It is a perspective view showing the exterior body and wire harness with an exterior body concerning an embodiment of the invention. It is a perspective view showing in the state where the wall part of the exterior body concerning an embodiment of the invention was developed. It is a perspective view which shows the attachment part of the exterior body which concerns on embodiment of this invention. FIG. 4 is a perspective view showing an attached part of the exterior body according to the embodiment of the present invention in a developed state. It is a side view which shows the attachment part of the exterior body which concerns on embodiment of this invention. It is sectional drawing which shows the 1st modification of the attachment part of the exterior body which concerns on embodiment of this invention. It is sectional drawing which shows the 2nd modification of the attachment part of the exterior body which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

[1. Overall configuration of wire harness with exterior body]
First, an overall configuration of a wire harness 1 with an exterior body according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a perspective view showing an exterior body 3 and a wire harness 1 with an exterior body according to an embodiment of the present invention.

  Hereinafter, for convenience of description, the longitudinal direction (length direction) of the exterior body 3 is referred to as “X”, and the lateral direction (width direction) of the exterior body 3 is referred to as “Y”. The height direction of the exterior body 3 is set to “H”.

  As shown in FIG. 1, a wire harness 1 with an exterior body according to an embodiment of the present invention includes a wire harness 2 in which a plurality of electric wires are bundled, and an exterior body for an electric wire (hereinafter, referred to as an exterior body) attached to the outer periphery of the wire harness 2. , "Exterior body"). The wire harness 2 is protected from the external environment by the exterior body 3. For example, the exterior body 3 has a function as a protector that prevents the body and the wire harness 2 from directly rubbing due to the vibration of the car. In FIG. 1, the wire harness 2 is shown as a single column, but the wire harness 2 includes one or more electric wires.

[2. Configuration of Exterior Body]
Next, the configuration of the exterior body 3 according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 2 is a perspective view showing a state where the wall portion 4 of the exterior body 3 of FIG. 1 is expanded.

  As shown in FIG. 1, the exterior body 3 includes a plurality of wall portions 4 extending in a direction in which the wire harness (electric wire) 2 extends (longitudinal direction X), and at least one wall portion of the plurality of wall portions 4. 4 (two wall portions 4 in the embodiment of the present invention), and an additional portion 5 (three additional portions 5 in the embodiment of the present invention) extending outward.

[2-1. Configuration of the wall]
As shown in FIG. 2, the plurality of wall portions 4 are integrally formed by bending one resin sheet at the bent portions 20a to 20d. The resin sheet can be realized by, for example, a thermoplastic resin foam sheet. Therefore, the weight of the exterior body 3 can be reduced. A plurality of wall portions 4 are formed by bending the resin sheet at the bent portions 20a to 20d.

  As shown in FIG. 1, by bending the resin sheet at the bent portions 20 a to 20 d, the space formed by being surrounded by the plurality of walls 4 serves as the housing portion 6 for housing the wire harness 2. The plurality of walls 4 according to the embodiment of the present invention will be described on the assumption that the cross-sectional shape in the short direction Y is a square shape or a substantially square shape, but the cross-sectional shape in the short direction Y is a square shape or a substantially square shape. It is not limited to.

  The plurality of wall portions 4 include a bottom wall portion 41, a side wall portion 42 continuously provided from an edge of the bottom wall portion 41 via a bent portion 20 a, and a bent portion 20 b from the edge of the bottom wall portion 41. A side wall portion 43 continuously provided through the side wall portion, an inner lid wall portion 44 continuously provided from the edge of the side wall portion 42 through the bent portion 20c, and a bent portion 20d from the edge of the side wall portion 43. And an outer lid wall portion 45 provided continuously.

  The bottom wall portion 41 is disposed between the side wall portion 42 and the side wall portion 43, and the side wall portion 42 stands upright from the edge of the bottom wall portion 41 via the bent portion 20 a, and the edge of the bottom wall portion 41 The side wall 43 is erected through the bent portion 20b.

  The inner lid wall portion 44 and the outer lid wall portion 45 overlap each other in the outer peripheral direction of the wire harness 2 (transverse direction Y), and the overlapping portion serves as an overlapping portion 46. Specifically, the overlapping portion 46 is a portion in which an end portion 45b from an edge 45a of the outer lid wall portion 45 to near the center in the short direction Y is covered from above the inner lid wall portion 44 and is overlapped. In the overlapping portion 46, the inner lid wall portion 44 and the outer lid wall portion 45 are joined by joining means. In addition, as a joining means, for example, an adhesive means such as an adhesive or an adhesive tape, a welding means such as ultrasonic welding, heat welding, a locking member, a fitting means using a rivet, a penetration fixing using a stapler or the like. Means and the like can be mentioned.

  The inner lid wall portion 44 is disposed parallel or substantially parallel to the bottom wall portion 41 from the edge of the side wall portion 42 via the bent portion 20c, and is disposed inside (toward the storage portion 6) in the overlapping portion 46. Have been.

  The outer lid wall portion 45 is opposed to the bottom wall portion 41, is arranged in parallel or substantially parallel to the bottom wall portion 41 from the edge of the side wall portion 43 via the bent portion 20 d, and Are located in The outer lid wall portion 45 has an edge 45a substantially flush with the side wall portion 42 in a state of being disposed above the inner lid wall portion 44.

  As shown in FIG. 2, the plurality of wall portions 4 have insertion holes 40 (in the embodiment of the present invention, three insertion holes 40a, 40b, and 40c) into which fixing portions 71 of the attachment portions 5 described later are inserted. ) Is formed. Specifically, two insertion holes 40a and 40b are formed in the side wall portion 42, and an insertion hole 40c is formed in the side wall portion 43.

  In the insertion hole 40a, one edge 40aa of the pair of edges 40aa and 40ab is located on the side wall portion 42, and the other edge 40ab is located on the same line as the bent portion 20a. Similarly, in the insertion hole 40b, one edge portion 40ba of the pair of edge portions 40ba and 40bb is located on the side wall portion 42, and the other edge portion 40bb is located on the same line as the bent portion 20a. In the insertion hole 40c, one edge portion 40ca of the pair of edge portions 40ca and 40cb is located on the side wall portion 42, and the other edge portion 40cb is located on the same line as the bent portion 20b. Thus, when the bent portions 20a and 20b are bent, the insertion holes 40a and 40b are located on the side wall portion 42, and the insertion holes 40c are located on the side wall portion 43.

[2-2. Attached part]
As shown in FIG. 1, the attachment part 5 extends from the side wall parts 42 and 43 in the short direction Y (outside opposite to the housing part 6), and at least two sheet pieces facing each other (this embodiment). , The upper sheet piece 7 and the lower sheet piece 8). Although details will be described later, the exterior body 3 can be attached to the vehicle body by inserting the locking member into the through hole 77 formed in the attachment part 5.

  Although details will be described later with reference to FIG. 5, the attachment portion 5 is formed such that one end portions 7 a and 8 a of two opposing sheet pieces 7 and 8 are separated from each other and the bottom wall portion 41 of the wall portion 4 is separated. And the other ends 7b and 8b of the two sheet pieces 7 and 8 facing each other at a predetermined distance outward from the fixing portions 71 and 81 are joined to each other. It has joining portions 73 and 83. Hereinafter, the configuration of the attachment part 5 will be described in detail with reference to FIGS.

  FIG. 3 is a perspective view showing the attachment part 5 of the exterior body 3 of FIG. FIG. 4 is a perspective view showing the attached part 5 of FIG. 3 in an expanded state. FIG. 5 is a side view showing the attachment part 5 of FIG.

  As shown in FIG. 3, the attachment portion 5 has an upper sheet piece 7 arranged on the upper side in the height direction H and a lower sheet piece 8 arranged on the lower side in the height direction H. .

  As shown in FIG. 4, the upper sheet piece 7 and the lower sheet piece 8 of the attachment part 5 are integrally formed by bending one resin sheet at the bending part 50. The resin sheet can be realized by, for example, a thermoplastic resin foam sheet. Therefore, the weight of the attachment part 5 can be reduced.

  As shown in FIG. 5, the upper sheet piece 7 of the attachment portion 5 includes a fixing portion 71 fixed to an upper surface 41 a facing the upper side in the thickness direction (height direction H) with the resin sheet of the bottom wall portion 41, The overlapped portion 72 that forms the gap S between the lower sheet piece 8, the joint 73 that is joined to the lower sheet piece 8, and the overlapped parts 74 and 75 that overlap the lower sheet piece 8. Have.

  As shown in FIG. 3, the fixing portion 71 is inserted into the insertion hole 40, and is fixed to the upper surface 41 a of the bottom wall portion 41 by welding means at the welding portion 70. In addition, as the welding means, for example, welding means such as ultrasonic welding and heat welding can be used. Further, the welded portion 70 may be bonded with an adhesive or an adhesive tape instead of welding.

  As shown in FIGS. 3 and 5, the overlapped portion 72 is located between the fixing portion 71 and the joining portion 73, and has a gap S between the overlapped portion 82 of the lower sheet piece 8 described later. Is formed. That is, the overlapped portion 72 is a portion that is not in contact with the lower sheet piece 8.

  The joining portion 73 is a portion joined to a joining portion 83 of the lower sheet piece 8 described below by joining means. In addition, as a joining means of the joining part 73 and the joining part 83, for example, an adhesion means such as an adhesive or an adhesive tape, a welding means such as ultrasonic welding, heat welding, or the like can be given.

  The overlapping portions 74 and 75 are portions where the upper sheet piece 7 and the lower sheet piece 8 overlap on the side opposite to the fixing section 71 from the joining section 73. By folding between the overlapping portion 74 and the overlapping portion 75 in a mountain-folding manner at the bent portion 76, the overlapping portion 75 is held at a predetermined angle with respect to the overlapping portion 74.

  The overlapping portion 74 is a portion where the overlapping portion 84 of the lower sheet piece 8 described below is covered from above and overlapped. The overlapping portion 75 is a portion in which an overlapping portion 85 of the lower sheet piece 8 described below is covered from above and overlapped.

  The overlapping portion 74 is formed with a through hole 77 that penetrates in the thickness direction (height direction H) of the upper sheet piece 7 and into which a locking member (not shown) that can be attached to the vehicle body is inserted. The overlapping portions 74 and 75 may be joined to the overlapping portions 84 and 85 by joining means.

  As shown in FIG. 5, the lower sheet piece 8 of the attachment part 5 is fixed to a lower surface 41 b facing the lower side in the thickness direction (height direction H) of the bottom wall portion 41 with the resin sheet. , An overlapping portion 82 forming a gap S between the upper sheet piece 7 and the overlapping portion 72, a joining portion 83 joined to the upper sheet piece 7, and an overlapping portion overlapping the upper sheet piece 7. 84 and 85.

  As shown in FIG. 3, the fixing portion 81 is fixed to the lower surface 41 b of the bottom wall portion 41 by welding at the welding portion 80. As the welding means, for example, as in the case of the welding portion 70, welding means such as ultrasonic welding and heat welding can be used. Further, the welded portion 80 may be bonded with an adhesive, an adhesive tape, or the like instead of the weld.

  As shown in FIGS. 3 and 5, the fixing portion 71 of the upper sheet piece 7 and the fixing portion 81 of the lower sheet piece 8 are respectively provided on the upper surface 41 a or the lower surface 41 b of the bottom wall portion 41 facing the thickness direction of the resin sheet. Fixed. That is, the fixing portion 71 of the upper sheet piece 7 is fixed from the upper surface 41a side of the bottom wall portion 41, and the fixing portion 81 of the lower sheet piece 8 is fixed from the lower surface 41b side of the bottom wall portion 41 so as to sandwich the bottom wall portion 41. I have.

  As shown in FIGS. 3 and 5, the overlapped portion 82 is located between the fixing portion 81 and the joining portion 83, and forms a gap S between the overlapped portion 72 of the upper sheet piece 7. ing. That is, the overlapped portion 82 is a portion that is not in contact with the upper sheet piece 7. The shape of the gap S is maintained by bending the overlapped portion 82 into a valley fold at the bent portion 88.

  Specifically, the gap S includes fixed portions 71 and 81 in which the end 7a of the upper sheet piece 7 and the end 8a of the lower sheet piece 8 are fixed apart from each other, and outward from the fixed portions 71 and 81. The upper sheet piece 7 and the lower sheet piece 8 are formed at the separated positions by joining portions 73 and 83 where the lower sheet piece 8 is joined. The gap S has a substantially triangular cross-sectional shape in the short direction Y, and the vertices of the substantially triangular shape are the joining portions 73 and 83 where the upper sheet piece 7 and the lower sheet piece 8 are joined. I have.

  As shown in FIG. 5, the value of the height dimension A of the gap S, which is the maximum separation distance between the overlapped portion 72 of the upper sheet piece 7 and the overlapped portion 82 of the lower sheet piece 8, is equal to the bottom wall portion 41. Is approximately the same as the value of the thickness of the resin sheet. That is, the value of the height dimension A of the gap S on the end portion 41 c side of the bottom wall portion 41 is such that the fixing portion 71 of the upper sheet piece 7 and the fixing portion 81 of the lower sheet piece 8 are fixed with the bottom wall portion 41 interposed therebetween. Therefore, the thickness is approximately the same as the value of the thickness dimension of the resin sheet of the bottom wall portion 41.

  The joining portion 83 is a portion joined to the joining portion 73 of the upper sheet piece 7 by joining means. The joining portions 73 and 83 are joined at positions separated by a predetermined distance (length B) from the fixing portion 71 of the upper sheet piece 7 and the fixing portion 81 of the lower sheet piece 8 to the outside. That is, the value of the length dimension B is the same or substantially the same as the value of the dimension from the end 41 c side of the bottom wall portion 41 of the gap S to the joining portions 73 and 83. The value of the length dimension B is preferably 5 mm or more and 30 mm or less, more preferably 10 mm or more and 20 mm or less from the viewpoint of suppressing deformation of the attachment portion 5.

  The overlapping portions 84 and 85 are portions where the upper sheet piece 7 and the lower sheet piece 8 overlap on the side opposite to the fixing section 81 from the joining section 83. By folding between the overlapping portion 84 and the overlapping portion 85 in a mountain-folding manner at the bent portion 86, the overlapping portion 85 can be held at a predetermined angle with respect to the overlapping portion 84. That is, the bent portion 76 is located above the bent portion 86, and the bent portions 76 and 86 are bent so that the overlapped portions 75 and 85 are overlapped with the bottom wall 41 with respect to the overlapped portions 74 and 84. It can be kept substantially parallel.

  The overlapping portion 84 is a portion that covers and overlaps the overlapping portion 74 of the upper sheet piece 7. The overlapping portion 85 is a portion that covers and overlaps the overlapping portion 75 of the upper sheet piece 7.

  The overlapping portion 85 is formed with a through hole 87 that penetrates the lower sheet piece 8 in the thickness direction (height direction H) and into which a locking member (not shown) that can be attached to the vehicle body is inserted. . As shown in FIG. 4, the through hole 87 is formed to be larger than the through hole 77 of the upper sheet piece 7.

  Specifically, as shown in FIG. 4, the through hole 87 has a length dimension C8 and a width dimension D8 which are larger than the length dimension C7 and the width dimension D7 of the through hole 77. That is, the through-hole 87 is formed so as to be large enough to insert a base part (not shown) of the locking member and a tip part (not shown) narrower than the base part which can be inserted into a mounting hole of the vehicle body. Further, the through hole 77 is formed smaller than the through hole 77 so that only the tip portion can be inserted. FIG. 4 shows that the through-hole 87 is formed larger than the through-hole 77 of the upper sheet piece 7, but may be the same size as the through-hole 77 or smaller than the through-hole 77. Is also good.

[3. Method for Forming Exterior Body and Wire Harness with Exterior Body]
Next, with reference to FIGS. 1 to 5, a method of forming the above-described exterior body 3 and a method of attaching the wire harness 2 to the exterior body 3 to form the wire harness 1 with the exterior body will be described.

  In the method of forming the exterior body 3, first, a portion corresponding to the wall portion 4 is stamped out from a resin sheet serving as a base material for forming the exterior body 3. Punching includes, for example, punching with a Thomson blade mold from the viewpoint of cost reduction and processing simplicity. The method of forming the exterior body 3 is not limited to the punching process, but may be a cutting process such as a cutting plotter.

  In addition, a punching process is performed in which a portion corresponding to the insertion hole 40 (40a, 40b, 40c) is punched out of a portion corresponding to the punched exterior body 3. When a portion corresponding to the insertion hole 40 is punched, the insertion hole 40 is formed in the wall portion 4. Note that a portion corresponding to the insertion hole 40 may be cut out from a portion corresponding to the exterior body 3 by a cutting process such as a cutting plotter.

  In addition, a punching process is performed by punching a portion corresponding to the attachment portion 5 from a resin sheet serving as a base material for forming the exterior body 3. In addition, a punching process is performed to punch out portions corresponding to the through-holes 77 and 87 among the portions corresponding to the punched attachment portions 5. Note that a portion corresponding to the attachment portion 5 may be cut out from the resin sheet by a cutting process such as a cutting plotter. When the portions corresponding to the through holes 77 and 87 are punched, the through holes 77 and 87 are formed in the attachment part 5.

  In the method of attaching the exterior body 3 formed as described above to the wire harness 2, the lower sheet piece 8 is arranged below the upper sheet piece 7 by folding the attachment part 5 at the bent part 50. I do.

  After the lower sheet piece 8 is arranged below the upper sheet piece 7, the fixing portion 71 of the upper sheet piece 7 is inserted into the insertion hole 40 and arranged on the upper surface 41 a of the bottom wall portion 41. Further, the fixing portion 81 of the lower sheet piece 8 is disposed on the lower surface 41 b of the bottom wall portion 41. That is, the bottom wall 41 is disposed so as to sandwich the bottom wall portion 41 between the fixing portion 71 and the fixing portion 81.

  After disposing the fixing portions 71 and 81 on the upper surface 41a or the lower surface 41b of the bottom wall portion 41, the fixing portions 71 and 81 are welded to the upper surface 41a or the lower surface 41b at the welding portions 70 and 80 by welding means. Specifically, fixing portion 71 is welded to upper surface 41a of bottom wall portion 41 at welded portion 70, and fixed portion 81 is welded to lower surface 41b of bottom wall portion 41 at welded portion 80.

  When the fixing portions 71 and 81 are welded, the end 7a of the upper sheet piece 7 and the end 8a of the lower sheet piece 8 are separated from each other and fixed to the wall 4 (see FIG. 3).

  After the fixing portions 71 and 81 are welded, the joining portion 73 of the upper sheet piece 7 and the joining portion 83 of the lower sheet piece 8 are joined. As shown in FIG. 3 and FIG. 5, the joint between the joint 73 and the joint 83 may be joined linearly along the linear joint 73 and the joint 83.

  When the joining portion 73 and the joining portion 83 are joined, a gap S is formed between the overlapped portion 72 of the upper sheet piece 7 and the overlapped portion 82 of the lower sheet piece 8.

  When the joining portion 73 and the joining portion 83 are joined, the overlapping portion 74 of the upper sheet piece 7 is overlapped on the overlapping portion 84 of the lower sheet piece 8. The overlapping portion 75 of the upper sheet piece 7 is overlapped on the overlapping portion 85 of the lower sheet piece 8. When the overlapping portion 75 is overlapped on the overlapping portion 85, the through hole 87 is arranged on the through hole 87.

  When the attachment 5 is attached to the wall 4, the side walls 42, 43 are bent at the bent portions 20 a, 20 b so that the side walls 42, 43 are substantially perpendicular to the bottom wall 41. When bent at the bent portions 20a and 20b, the shape between the side wall portion 42 and the side wall portion 43 is opened upward along the longitudinal direction X.

  After bending the bent portions 20a and 20b, the wire harness 2 is placed on the bottom wall portion 41 and bent at the bent portion 20c so that the inner lid wall portion 44 is substantially parallel to the bottom wall portion 41. . Next, the outer lid wall portion 45 is bent at the bent portion 20d such that the outer lid wall portion 45 is substantially parallel to the bottom wall portion 41. When the outer lid wall portion 45 is bent at the bent portion 20d, the inner lid wall portion 44 and the outer lid wall portion 45 overlap to form an overlapping portion 46. Further, the opening between the side wall portion 42 and the side wall portion 43 is closed to form the housing portion 6, and the wire harness 2 is housed in the housing portion 6 in a state of being inserted. By joining the inner lid wall portion 44 and the outer lid wall portion 45 in the overlapping portion 46, the state in which the opening between the side wall portions 42 and 43 is closed is fixed, and the exterior body 3 is It is attached to the outer periphery of the wire harness 2.

  When the accommodation portion 6 is formed, the fixing portion 71 of the upper sheet piece 7 is disposed in the accommodation portion 6, and the overlapping portion 72, the joining portion 73, and the overlapping portion are provided from the insertion hole 40 toward the outside of the accommodation portion 6. The portion 74 and the overlapping portion 75 are located in this order.

  The fixing portion 71 of the lower sheet piece 8 is disposed on the lower surface 41 b of the bottom wall portion 41, and the overlapping portion 82, the joining portion 83, and the overlapping portion from the side wall portions 42 and 43 toward the outside of the housing portion 6. 84, and the overlapping portion 85.

  In addition, the exterior body 3 may be attached to the outer periphery of a fixing tape for fixing the plurality of electric wires constituting the wire harness 2 so as not to be dispersed, and the plurality of electric wires not using the fixing tape may be attached. It may be mounted on the outer periphery. Further, the exterior body 3 may be attached to the outer periphery of one electric wire.

  As described above, in the exterior body 3 and the wire harness 1 with the exterior body, the attachment portion 5 is formed by the two sheet pieces, the upper sheet piece 7 and the lower sheet piece 8, so that the strength can be improved. As a result, deformation can be suppressed.

  In particular, the attachment portion 5 includes fixing portions 71, 81 in which the end portions 7a, 8a of the sheet pieces 7, 8 are separated from each other and fixed to the wall portion 4, and a predetermined interval outward from the fixing portions 71, 81. The gap S is formed by the joint portions 73 and 83 where the sheet pieces 7 and 8 are joined at the position where the sheet pieces 7 and 8 are joined. In the exterior body 3, the gap S is formed in the attachment portion 5, whereby the movement of the overlapped portions 72, 82 in the thickness direction (height direction H) is suppressed, and the shape of the attachment portion 5 is maintained. Therefore, it is possible to withstand external stresses such as the weight and vibration of the wire harness 2 and prevent deformation and displacement of the exterior body 3. Further, since the exterior body 3 has the gap S formed in the attachment part 5, the positioning when attaching the attachment part 5 to the vehicle body can be easily performed.

  The upper sheet piece 7 and the lower sheet piece 8 of the attachment part 5 are integrally formed by bending one resin sheet at the bending part 50. For this reason, it becomes easy to overlap the upper sheet piece 7 and the lower sheet piece 8.

  Further, the fixing portion 71 of the upper sheet piece 7 and the fixing portion 81 of the lower sheet piece 8 of the attachment part 5 are fixed to the upper surface 41 a or the lower surface 41 b of the bottom wall portion 41 facing the resin sheet in the thickness direction. . That is, the gap S can be easily formed by sandwiching and fixing the bottom wall portion 41 between the fixing portion 71 and the fixing portion 81.

  In addition, through holes 77 and 87 are formed in the overlapping portions 75 and 85 of the attachment portion 5 so as to penetrate in the thickness direction (height direction H) of the attachment portion 5 and into which locking members attachable to the vehicle body are inserted. Have been. For this reason, the positioning at the time of attaching the attachment part 5 in which the locking member is inserted to the vehicle body becomes easy, and the work efficiency of the work of mounting the exterior body 3 and the wire harness 1 with the exterior body to the vehicle body can be improved. .

  Further, the plurality of wall portions 4 are formed with insertion holes 40 (40a, 40b, 40c) into which the fixing portions 71 of the attachment portions 5 are inserted. Therefore, the positioning between the upper surface 41a of the bottom wall portion 41 and the fixing portion 71 is facilitated, and the work efficiency of the fixing operation between the upper surface 41a of the bottom wall portion 41 and the fixing portion 71 can be improved. Further, the attachment of the attachment part 5 to the wall part 4 is facilitated, and the work efficiency of the attachment work of the attachment part 5 can be improved.

  The length B between the joints 73 and 83 and the fixing portions 71 and 81 of the attachment 5 is 5 mm or more and 30 mm or less, and therefore, the thickness direction (height direction H) of the attachment 5. Is suppressed, and the strength of the attachment part 5 can be improved.

  In addition, the resin sheet used for the exterior body 3 including the wall portion 4 and the attachment portion 5 is not particularly limited as long as it can be bent. As the resin type, either a thermoplastic resin or a thermosetting resin is used. be able to. Among these, a thermoplastic resin foam sheet is preferred in terms of lightness, flexibility in shape design, cost, and the like. The specific resin type of the thermoplastic resin foam sheet is not particularly limited, for example, polyethylene resin, polypropylene resin, polycarbonate resin, polyethylene terephthalate resin, polybutylene terephthalate resin, polyamide resin, polyphenylene sulfide resin, polystyrene resin, Examples thereof include polyvinyl chloride resin, polyvinyl acetate resin, polytetrafluoroethylene resin, and acrylic resin.

The density of the thermoplastic resin foam sheet used in exterior body 3 is not particularly limited, for example, 200 Kg / m ³ or more from the viewpoint of improving the balance between light weight and mechanical strength 700 Kg / m ³ or less is preferable , 300 Kg / ^{m 3} or more 600 Kg / ^{m 3} and more preferably less, particularly preferably 350 Kg / ^{m 3} or more 550 kg / ^{m 3} or less. In addition, the density of a thermoplastic resin foam sheet is measured based on JISK7222.

  The thickness of the thermoplastic resin foam sheet is not particularly limited, and is, for example, preferably 0.50 mm or more and 4.0 mm or less, particularly preferably 0.8 mm or more and 2.5 mm or less from the viewpoint of ease of bending and mechanical strength. .

  Further, a non-foamed layer may be formed on both sides or one side of the thermoplastic resin foam sheet. That is, the foamed thermoplastic resin sheet may have a configuration having a foamed layer and a non-foamed layer formed on the foamed layer. Since the non-foamed layer is formed on the surface of the thermoplastic resin foam sheet, the mechanical strength of the exterior body 3 is improved, and the protection performance of the housed wire harness 2 is further improved. It is preferable that a non-foamed layer is formed on both sides from the viewpoint of reliably improving the mechanical strength of the exterior body 3. The thickness of the non-foamed layer is not particularly limited, and may be, for example, 10 μm or more and 100 μm or less.

  The Shore hardness (HSC) of the thermoplastic resin foam sheet is not particularly limited, but is preferably, for example, 60 or more and 100 or less from the viewpoint of mechanical strength.

[4. Modification]
Next, a first modification and a second modification of the attachment portion 5 of the exterior body 3 according to the above-described embodiment will be described with reference to FIGS. 6 and 7. FIG. 6 is a cross-sectional view of the attachment 150a showing a first modification of the attachment 5 of the exterior body 3, and FIG. 7 is a view showing a second modification of the attachment 5 of the exterior 3. It is sectional drawing of the attachment part 150b.

  Hereinafter, the same reference numerals are given to the same or similar configurations as the exterior body 3 and the wire harness 1 with the exterior body according to the above-described embodiment, and the description thereof is omitted.

  As shown in FIG. 6, the attachment portion 150a includes one end 7a, 9a of the sheet piece 107a, 109a and one end of the sheet piece 108a among the three sheet pieces 107a, 108a, 109a opposed to each other. 8a are fixed and fixed to the bottom wall portion 41 of the wall portion 4 at fixed portions 71, 81, and three sheet pieces 107a facing the fixed portions 71, 81, 91 outward at a predetermined distance from each other. , 108a, and 109a, the other end portions 7b, 8b, and 9b are joined to each other, and three sheets are provided on the opposite side of the fixing portions 71, 81, and 92 from the joint portions 73, 83, and 93. Pieces 107a, 108a, and 109a have overlapping portions 75, 85, and 95 overlapping each other. A gap S is formed between the fixing portions 71, 81, 91 and the joining portions 73, 83, 93.

  The fixing portion 71 of the sheet piece 107a and the fixing portion 91 of the sheet piece 109a are inserted into the insertion holes, and are fixed by welding to the upper surface 41a of the bottom wall portion 41 at the welding portions 70 and 90. Further, the fixing portion 81 of the sheet piece 108a is welded to the lower surface 41b of the bottom wall portion 41 at the welding portion 80. That is, the sheet pieces 107a, 108a, and 109a are welded and fixed by the fixing portions 71 and 91 and the fixing portion 81 so as to sandwich the bottom wall portion 41. Further, the welding portions 70, 80, and 90 may be bonded by an adhesive, an adhesive tape, or the like instead of welding.

  In the sheet pieces 107a, 108a, and 109a, the joining portions 73, 83, and 93 are joined at positions separated by a predetermined distance from the fixing portions 71, 81, and 91. The predetermined interval is preferably 5 mm or more and 30 mm or less, more preferably 10 mm or more and 20 mm or less, from the viewpoint of suppressing deformation of the attachment portion 105a.

  In the sheet pieces 107a, 108a, and 109a, through holes 77, 87, and 97 are formed in the overlapping portions 75, 85, and 95, respectively, into which locking members (not shown) that can be attached to the vehicle body are inserted. The through hole 87 is disposed on the through hole 77, and the through hole 77 is disposed on the through hole 87.

  In this manner, the exterior body 3 of the first modified example has the fixing portions 71, 81, 91 by forming the gap S between the fixing portions 71, 81, 91 and the joining portions 73, 83, 93. The movement of the wire 91 in the thickness direction (height direction H) is suppressed, and the shape of the attachment portion 5 can be maintained, so that the wire harness 2 can withstand external stress such as weight and vibration, and the exterior body 3 Can be prevented from being deformed or displaced. In addition, the exterior body 3 has a gap S formed between the fixing portions 71, 81, 91 and the joining portions 73, 83, 93, so that the attachment portion 5 can be easily positioned when attached to the vehicle body. Can be.

  As shown in FIG. 7, the attachment portion 150b includes one end 7a, 9a of the sheet piece 107b, 109b and one end of the sheet piece 108b among the three sheet pieces 107b, 108b, 109b opposed to each other. 8a are fixed and fixed to the bottom wall portion 41 of the wall portion 4 at fixed portions 71, 81, and three sheet pieces 107b facing the fixed portions 71, 81, 91 outward at a predetermined distance from each other. , 108b, and 109b, the other end portions 7b, 8b, and 9b of which the other end portions 7b, 8b, and 9b are joined; Pieces 107b, 108b, and 109b have overlapping portions 75, 85, and 95 overlapping each other. Gaps S1, S2 are formed between the fixing portions 71, 81, 91 and the joining portions 73, 83, 93.

  The gap S1 is formed between the sheet piece 107b and the sheet piece 108b, and the gap S2 is formed between the sheet piece 107b and the sheet piece 109b.

  The fixing portion 71 of the sheet piece 107b and the fixing portion 91 of the sheet piece 109b are inserted into the insertion holes, and are fixed to the upper surface 41a of the bottom wall portion 41 at the welding portions 70 and 90 by welding. Further, the fixing portion 81 of the sheet piece 108a is welded to the lower surface 41b of the bottom wall portion 41 at the welding portion 80. That is, the sheet pieces 107a, 108a, and 109a are welded and fixed by the fixing portions 71 and 91 and the fixing portion 81 so as to sandwich the bottom wall portion 41. Further, the welding portions 70, 80, and 90 may be bonded by an adhesive, an adhesive tape, or the like instead of welding.

  In the sheet pieces 107b, 108b, and 109b, the joining portions 73, 83, and 93 are joined at positions separated by a predetermined distance from the fixing portions 71, 81, and 91. The predetermined interval is preferably 5 mm or more and 30 mm or less, more preferably 10 mm or more and 20 mm or less, from the viewpoint of suppressing deformation of the attachment portion 105a.

  In the sheet pieces 107b, 108b, and 109b, through holes 77, 87, and 97 are formed in the overlapping portions 75, 85, and 95, respectively, into which locking members (not shown) that can be attached to the vehicle body are inserted. The through hole 87 is disposed above the through hole 87, and the through hole 97 is disposed above the through hole 87.

  In this manner, the exterior body 3 of the second modified example has the exterior body 3 in the thickness direction (the height direction H) of the fixing portions 71, 81, 91 by forming the gap S1 and the gap S2. Movement of the wire harness 2 can be suppressed and the shape of the attachment portion 5 can be maintained, so that the wire harness 2 can withstand external stresses such as weight and vibration, and deformation and displacement of the exterior body 3 can be prevented. . In addition, since the exterior body 3 is formed with the gap S1 and the gap S2, the positioning when attaching the attachment part 5 to the vehicle body can be easily performed.

[4. Other Embodiments]
In the above-described embodiment of the present invention, the case where the attachment portion 5 extends outside the side wall portions 42 and 43, that is, extends in the short direction Y, has been described. It may extend from the inner lid wall portion 44 and the outer lid wall portion 45 to the outside, that is, in the longitudinal direction X or the height direction H. Also, it is sufficient that at least one attachment part 5 is provided on the wall part 4, and the number of the attachment parts 5 can be appropriately changed.

  In addition, the case where the attachment portion 5 forms the gap S between the overlapped portion 72 of the upper sheet piece 7 and the overlapped portion 82 of the lower sheet piece 8 has been described. A plurality of gaps may be formed between the portion 72 and the overlapped portion 82. Further, a plurality of gaps may be formed by forming the attachment part 5 with two or more sheet pieces. Further, a gap may be formed in a part between the overlapping portions 74 and 75 and the overlapping portions 84 and 85.

  In the above-described embodiment of the present invention, the configuration in which the bottom wall 41 is fixed by the fixing portion 71 of the upper sheet piece 7 and the fixing portion 81 of the lower sheet piece 8 is described. Not limited. For example, the fixing portion 71 of the upper sheet piece 7 is joined to the surface of the outer lid wall portion 45, and the fixing portion 81 of the lower sheet piece 8 is joined to the lower surface 41b of the bottom wall portion 41 so as to sandwich the side wall portion 42. It may be fixed.

  The case where the exterior body 3 in the above-described embodiment of the present invention is formed by the plurality of walls 4 extending along the extending direction (longitudinal direction X) of the wire harness 2 has been described. May be branched in the up, down, left, and right directions along the shape of the wire harness 2 on the way. Further, the attachment part 5 may be provided on the branched wall.

  Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the exterior body 3 and the wire harness 1 with the exterior body according to the above-described embodiment, but includes the concept of the present invention and claims. And all the aspects included in the range. In addition, the components may be appropriately selectively combined so as to achieve at least a part of the above-described problems and effects. For example, the shape, material, arrangement, size, and the like of each component in the above-described embodiment can be appropriately changed depending on the specific usage of the present invention. The configuration of each unit can be replaced with any configuration having a similar function.

  DESCRIPTION OF SYMBOLS 1 ... Wire harness with exterior body, 2 ... Wire harness (electric wire), 3 ... exterior body (exterior body for electric wires), 4 ... wall part, 5 ... attachment part, 6 ... accommodation part, 7 ... upper sheet piece, 7a ... One end, 7b ... the other end, 8 ... lower sheet piece, 8a ... one end, 8b ... the other end, 20a to 20d ... bent part, 40a to 40c ... insertion hole, 41 ... Bottom wall portion, 41a top surface, 41b bottom surface, 41c end portion, 42 side wall portion, 43 side wall portion, 44 inner lid wall portion, 45 outer lid wall portion, 45a, 45b edge, 46 edge portion Overlapping portion, 50: bent portion, 70: welded portion, 71: fixed portion, 72: overlapped portion, 73: joining portion, 74, 75: overlapping portion, 76: bent portion, 77: through hole , 80: welded portion, 81: fixed portion, 82: overlapped portion, 83: joined portion, 84, 85 ... overlapped portion Reference numeral 86: bent portion, 87: through hole, 88: bent portion, 91: fixed portion, 93: joining portion, 95: overlapping portion, 107a, 108a, 109a: sheet pieces, 107b, 108b, 109b: sheet pieces , 150a, 150b ... attached part, X ... longitudinal direction, Y ... short direction, Z ... height direction, A ... height dimension, B ... length dimension, S ... gap

Claims (9)

An electric wire exterior body attached to the outer periphery of the electric wire formed by bending a resin sheet,
A plurality of wall portions forming a housing portion for housing the electric wire,
An extension extending outward from at least one wall of the plurality of walls, and formed by at least two opposing sheet pieces;
The attachment portion is a fixed portion in which one end of the two facing sheet pieces is separated from each other and fixed to the wall portion, and at a position separated from the fixed portion by a predetermined distance outward from the fixed portion. And a joining portion in which the other ends of the two facing sheet pieces are joined to each other.   The electric wire exterior body according to claim 1, wherein a gap is formed between the fixing portion and the joining portion.   The electric wire exterior body according to claim 1, wherein the attachment portion is formed integrally by bending one resin sheet.   The wire exterior body according to any one of claims 1 to 3, wherein the fixing portion of the attachment portion is fixed to an upper surface or a lower surface of the wall portion facing the thickness direction of the resin sheet. The attachment portion has an overlapping portion where the at least two sheet members overlap on the side opposite to the fixing portion from the joining portion,
The electric wire exterior according to any one of claims 1 to 4, wherein the overlapping portion has a through hole through which a mounting member that can be mounted on a vehicle body is inserted through the sheet piece in a thickness direction. body.   The wire exterior body according to any one of claims 1 to 5, wherein an insertion hole into which the fixing portion is inserted is formed in the wall portion.   The electric wire exterior body according to any one of claims 1 to 5, wherein the predetermined interval is 5 mm or more and 30 mm or less.   7. The outer sheath for electric wires according to claim 1, wherein the resin sheet and the attachment portion are formed of a thermoplastic resin foam sheet. 8. A wire harness with an exterior body,
A wire harness,
An electric wire exterior body according to any one of claims 1 to 8, comprising:
The wire harness with a sheath, wherein the sheath for an electric wire is mounted on an outer periphery of the wire harness.

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