WO2017018164A1

WO2017018164A1 - Electric wire outer casing, wire harness, and ruling blade

Info

Publication number: WO2017018164A1
Application number: PCT/JP2016/070228
Authority: WO
Inventors: 敦村田
Original assignee: 株式会社オートネットワーク技術研究所; 住友電装株式会社; 住友電気工業株式会社
Priority date: 2015-07-24
Filing date: 2016-07-08
Publication date: 2017-02-02
Also published as: JP2017028903A

Abstract

An electric wire outer casing 16 that is configured from a corrugated-plastic sheet 10. The sheet 10 has groove-shaped rules 11 that are arranged on the surface thereof. The rules 11 have two groove side surfaces 12 that are arranged so as to extend from the surface of the sheet 10 and to face. The two groove side surfaces 12 are curved surfaces that slope away from the surface of the sheet 10 toward the center of the groove and that bulge toward the inside of the groove.

Description

Electric wire exterior body, wire harness, and ruled line blade

The technique disclosed by this specification is related with an electric wire exterior body, a wire harness, and a ruled line blade.

Wire harnesses routed to vehicles such as automobiles are generally routed in a state where the wires are covered with an exterior body for the purpose of protecting and holding the wires in a routed arrangement. (See Patent Document 1).

It is conceivable to apply a member obtained by bending a plastic sheet having excellent strength as an exterior body. Generally, a plastic sheet is provided with a groove called a ruled line so that it can be easily bent during assembly (see Patent Document 2).

Japanese Patent Laid-Open No. 08-154324 JP 2005-343554 A

When forming the ruled line, the ruled line blade is pressed against the surface of the plastic sheet to bite the blade edge. Thereafter, when the ruled line blade is removed, a ruled line, which is a recessed mark, is formed there.
When the ruled line blade bites into the plastic sheet, a large tensile force is applied to the part of the plastic sheet that becomes the opening part of the ruled line (the boundary part between the surface of the plastic sheet and the inner wall surface of the ruled line). Whitening may occur and the design of the exterior body may be deteriorated.

An electric wire outer package disclosed in the present specification is a member that is externally mounted on an electric wire, and is configured by a plastic sheet, and the sheet has a groove-like ruled line arranged on one surface of both front and back surfaces. The ruled line has two groove side surfaces that are continuous from one surface of the sheet and are arranged to face each other, and at least one of the two groove side surfaces is located at the center of the groove as the distance from the surface of the sheet increases. It is a curved surface that inclines toward the inside of the groove and inclines toward the inside.

Moreover, the wire harness disclosed by this specification is equipped with an electric wire and the electric wire exterior body covered by the said electric wire, The said electric wire exterior body is comprised with the sheet | seat made from a plastic, and the said sheet | seat is both front and back both surfaces. A groove-like ruled line arranged on one surface, the ruled line having two groove side surfaces arranged from one side of the sheet and facing each other, and at least one of the two groove side surfaces However, as the distance from the surface of the sheet increases, the curved surface is inclined toward the center of the groove and bulges toward the inside of the groove.

According to the above configuration, the groove side surface of the ruled line is a curved surface that swells toward the inside of the groove. When forming a ruled line having such a shape, the tensile force when the ruled line blade bites into the plastic is reduced as compared with the case of forming a ruled line having a conventional shape. Thereby, whitening can be suppressed and the deterioration of the designability of the sheet | seat obtained and the exterior body assembled using this sheet | seat can be suppressed.

The electric wire outer package includes two plate-like liners arranged parallel to each other with a gap therebetween, and a plurality of ribs passed between the two liners. You may be comprised by the hollow plate which has the hollow part partitioned off by the said rib in the clearance gap.

A hollow plate having such a configuration is preferable as a material constituting an electric wire outer package because it is excellent in strength.

Further, the ruled line blade disclosed in the present specification is a ruled line blade for forming a ruled line on the sheet by pressing one of the front and back surfaces of the plastic sheet, the main body unit and the main body unit The blade portion includes two pressing side surfaces arranged opposite to each other, and at least one of the two pressing side surfaces is inclined toward the other side as the distance from the main body portion increases. It is a curved surface that is recessed.

When forming a ruled line in plastic using the ruled line blade having the above configuration, the tensile force when the ruled line blade bites into the plastic is reduced as compared with the case of forming a ruled line having a conventional shape. Thereby, whitening can be suppressed and the deterioration of the designability of the sheet | seat obtained and the exterior body assembled using this sheet | seat can be suppressed.

According to the technology disclosed in the present specification, it is possible to provide a plastic sheet and a wire harness outer body assembled using the sheet without impairing the design.

The perspective view of the sheet | seat of embodiment Partial enlarged view of the plastic cardboard of the embodiment Side view of the seat of the embodiment Enlarged view inside circle R1 in FIG. The perspective view of the ruled line blade of embodiment Side view of ruled line blade of embodiment Enlarged view inside circle R2 in FIG. Bottom view of ruled line blade of embodiment The perspective view which shows a mode that the exterior body of embodiment was mounted | worn with the electric wire bundle AA line sectional view of FIG. Enlarged view of circle R3 in FIG. Partial enlarged view of a modified sheet Partial enlarged view of the ruled line blade of the modified example Partial enlarged view of a sheet having a conventional V-ruled line Partial enlarged view of a conventional sheet with flat ruled lines

Embodiments will be described with reference to FIGS. The wire harness 1 according to the present embodiment is a member arranged in a vehicle, and includes an electric wire bundle 21 in which a plurality of electric wires 20 are bundled, and an electric wire outer package 16 (hereinafter referred to as “exterior”) covered by the electric wire bundle 21. Abbreviated as “body 16”). The exterior body 16 is mounted so as to surround the wire bundle 21 and protects the wire bundle 21 while supporting the wire bundle 21 in a shape (in the present embodiment, a straight line shape) matching the routing route.

The exterior body 16 is formed by punching the plastic corrugated cardboard D into a predetermined shape, providing a ruled line 11 on the surface thereof, producing the sheet 10 shown in FIG. 1, and bending the sheet 10 along the ruled line 11. It is a rectangular tube-shaped member.

The plastic corrugated cardboard D which is the material of the sheet 10 is made of a synthetic resin, and as shown in FIG. 2, two thin plate-like liners L arranged in parallel with a gap between each other, and these two sheets A hollow plate having a plurality of ribs R passed between the liners L and having a hollow portion S partitioned by the ribs R in a gap between the two liners L. Such a plastic corrugated cardboard D can be constituted by arranging liners L on both surfaces of a corrugated core F, for example, like paper corrugated cardboard. In the plastic corrugated cardboard D having such a configuration, the core F constitutes a rib R.

As shown in FIG. 1, the sheet 10 has a rectangular plate shape as a whole, and has a plurality of ruled lines 11 on the surface thereof.

Each of the plurality of ruled lines 11 is a groove that is recessed with respect to the surface of the sheet 10 as shown in FIGS. 1 and 3, and is straight and parallel to the long side of the sheet 10 as shown in FIG. 1. It extends in a shape. As shown in FIG. 4, each ruled line 11 includes two groove side surfaces 12 that are continuous from the surface of the sheet 10 and are arranged to face each other, and a groove bottom surface 13 that connects the two groove side surfaces 12. Each groove side surface 12 is inclined toward the center of the groove (center between the two groove side surfaces 12) as it is away from the surface of the sheet 10, and swells toward the inner side of the groove (each toward the other groove side surface 12). It has a curved surface. The groove bottom surface 13 is a surface parallel to the surface of the sheet 10.

As shown in FIG. 1, the plurality of ruled lines 11 are arranged with a space between each other, and each ruled line 11 extends over the entire length between two short sides of the sheet 10. With these ruled lines 11, the sheet 10 is divided into a plurality of portions constituting the four peripheral wall portions of the rectangular tube in the exterior body 16. Specifically, the sheet 10 is divided into five sections by four ruled lines 11. When the sheet 10 is bent into a rectangular tube shape, as shown in FIG. The two compartments at both ends are overlapped with each other to constitute one of the four peripheral wall portions of the square tube, and the other three compartments constitute the remaining three peripheral wall portions.

The ruled line 11 as described above is formed by pressing the ruled line blade 30 against the surface of the plastic cardboard D to be recessed. The ruled line blade 30 is used by being attached to a ruled line machine for forming the ruled line 11 on the plastic cardboard D, or a punching device for punching the plastic cardboard D into a predetermined shape and forming the ruled line 11. The main body 31 is held by a ruler or punching device, and the blade 32 is formed from the main body 31 and cuts into the plastic cardboard D to form the ruled line 11.

The ruled line blade 30 of this embodiment is made of metal and includes a main body 31 and a blade 32. As shown in FIG. 5, the main body 31 is a thick rectangular plate. The blade portion 32 is a ridge that extends along one side of the four sides of the main body portion 31 and protrudes outward from the main body portion 31, and includes two pressing side surfaces 33 that are arranged in parallel. A pressing bottom surface 34 that connects the two pressing side surfaces 33 is provided. The two pressing side surfaces 33 are curved surfaces that incline toward each other as they move away from the main body 31 and are concave toward the inside (respectively concave toward the opposing pressing side 33). The pressing bottom surface 34 is a flat surface arranged in parallel to the surface of the plastic cardboard D when the ruled line 11 is formed.

When forming the ruled line 11, the plastic cardboard D is laid on a flat cradle (not shown), the pressing bottom surface 34 of the ruled line blade 30 is pressed against the surface of the plastic cardboard D, and the blade part 32 is put on the plastic cardboard D. To bite into. Thereafter, when the ruled line blade 30 is removed, the ruled line 11 that is a trace recessed there is formed. At this time, the heat ruled line 30 may be formed by pressing the heated ruled line blade 30 against the plastic corrugated cardboard D and partially melting it, followed by curing.

The sheet 10 is folded along each of the plurality of ruled lines 11 to be assembled into a rectangular tube-shaped exterior body 16 as shown in FIG.

Here, as shown in FIG. 14, the conventional sheet 100 having the V-shaped V-shaped ruled line 101, and the groove bottom surface 112 as shown in FIG. 15 has the flat ruled line 111 parallel to the surface of the sheet 110. In the conventional sheet 110, when the ruled

lines

101 and 111 are formed, the borders between the

openings

101E and 111E of the ruled lines 101 and 111 (the boundaries between the surfaces of the

sheets

100 and 110 and the inner wall surfaces of the ruled lines 101 and 111) Part), whitening occurs along the

openings

101E and 111E, and the resulting

sheets

100 and 110 and the design of the exterior body assembled using the

sheets

100 and 110 are deteriorated. There is a risk.

In contrast, in the present embodiment, the blade portion 32 of the ruled line blade 30 has a curved pressing side surface 33, and the groove side surface 12 of the ruled line 11 to be formed is a curved surface. Therefore, when the sheet 10 is obtained by forming the ruled line 11 on the plastic cardboard D, the opening 11E of the ruled line 11 when the blade 32 bites into the plastic cardboard D (the boundary between the surface of the plastic cardboard D and the groove side surface 12). The tensile force applied to the part to be a part) is reduced as compared with the case where the ruled

lines

101 and 111 having the conventional shape are formed. Thereby, whitening can be suppressed and the fall of the designability of the sheet | seat 10 obtained and the exterior body 16 assembled using this sheet | seat 10 can be suppressed.

As described above, according to the present embodiment, the sheet 10 has the groove-like ruled lines 11 arranged on the surface, the two groove side faces 12 on which the ruled lines 11 are arranged to face each other, and these 2 The two groove side surfaces 12 are connected to each other, and have a groove bottom surface 13 parallel to the surface of the sheet 10. The two groove side surfaces 12 are inclined toward each other toward the center of the groove as the distance from the surface of the sheet 10 increases. It is a curved surface that bulges inward.

According to the above configuration, the groove side surface 12 of the ruled line 11 is a curved surface that swells toward the inside of the groove. When forming the ruled line 11 having such a shape, when the blade part 32 of the ruled line blade 30 bites into the plastic corrugated cardboard D, the tensile force applied to the part that becomes the opening 11E of the ruled line 11 is the ruled line 101 having the conventional shape. It is reduced compared with the case where 111 is formed. Thereby, whitening can be suppressed and the fall of the designability of the sheet | seat 10 obtained and the exterior body 16 assembled using this sheet | seat 10 can be suppressed.

Further, the ruled line blade 30 for forming the ruled line 11 on the sheet 10 includes a main body part 31 and a blade part 32 continuous from the main body part 31, and the two pressing side surfaces on which the blade parts 32 are arranged to face each other. 33 and a pressing bottom surface 34 that connects the two pressing side surfaces 33, and the two pressing side surfaces 33 are inclined so as to approach each other as they move away from the main body 31, and are curved surfaces that are recessed toward the inside. .

When forming the ruled line 11 on the plastic corrugated cardboard D using the ruled line blade 30 having the above-described configuration, the tensile force applied to the portion that becomes the opening 11E of the ruled line 11 when the blade part 32 bites into the plastic cardboard D is the conventional one. This is reduced as compared with the case of forming the ruled

lines

101 and 111 having a shape. Thereby, whitening can be suppressed and the fall of the designability of the sheet | seat 10 obtained and the exterior body 16 assembled using this sheet | seat 10 can be suppressed.

<Modification>
The sheet 40 of the modified example shown in FIG. 12 is different from the above-described embodiment in that only one groove side surface 42A of the two groove side surfaces 42A and 42B in the ruled line 41 is a curved surface. The other groove side surface 42 </ b> B is a surface perpendicular to the surface of the sheet 40 and the groove bottom surface 43.

13 is different from the above-described embodiment in that only one of the two pressing side surfaces 46A and 46B of the blade portion 45 is a curved surface. The other pressing side surface 46 </ b> B is a surface perpendicular to the pressing bottom surface 47.

Since the configuration other than the above is the same as that of the embodiment, the same reference numerals are given and description thereof is omitted.

According to the above configuration, when the sheet 40 is obtained by forming the ruled line 41 on the plastic cardboard D, the ruled line 41 is formed on the side where the pressing side surface 46A is a curved surface (the side where the curved groove side surface 42A is formed). The tensile force applied to the portion that becomes the opening 41E (the boundary between the surface of the plastic corrugated cardboard D and the groove side surface 42A) is reduced as compared with the case where the ruled

lines

101 and 111 having the conventional shape are formed, and whitening is suppressed. it can.

<Other embodiments>
The technology disclosed in this specification is not limited to the embodiment described with reference to the above description and drawings, and for example, the following embodiments are also included in the technical scope.
(1) In the above embodiment, the plastic corrugated cardboard D is exemplified by arranging the liner L on both surfaces of the corrugated core F. However, the configuration of the plastic corrugated cardboard is not limited to the above embodiment. In addition, a rib having a honeycomb structure may be provided, or a plate-like rib perpendicular to the liner may be arranged side by side.

(2) In the above embodiment, the outer package 16 supports the wire bundle 21 in a straight line. However, for example, the outer package has a cylindrical shape having a branch, and the wire bundle is branched and supported. It does not matter.

(3) In the above embodiment, the exterior body 16 has a rectangular tube shape, but the shape of the exterior body is not limited to the above embodiment, and may be, for example, a triangular cylinder shape, a hexagonal cylinder shape, a U-shaped groove shape, or the like. I do not care.

DESCRIPTION OF SYMBOLS 1 ... Wire harness 10 ... Sheet | seat 11 ... Ruled line 12 ... Groove side surface 13 ... Groove bottom surface 16 ... Electric wire exterior body 20 ... Electric wire 30 ... Ruled line blade 31 ... Body part 32 ... Blade part 33 ... Pressing side surface 34 ... Pressing bottom surface D ... Plastic cardboard (Hollow plate)
L ... Liner R ... Rib S ... Hollow

Claims

A wire outer package that is sheathed by an electric wire,
Consists of plastic sheets,
The sheet has groove-like ruled lines arranged on one of the front and back sides,
The ruled line is
Two groove side surfaces that are continuous from one side of the sheet and are arranged to face each other,
An electric wire outer package in which at least one of the two groove side surfaces is a curved surface that inclines toward the center of the groove and swells toward the inside of the groove as the distance from the surface of the sheet increases.
The sheet is
Two plate-like liners arranged in parallel with a gap between each other;
A plurality of ribs passed between the two liners;
The electric wire outer package according to claim 1, wherein the electric wire outer package is configured by a hollow plate having a hollow portion partitioned by the rib in a gap between the two liners.
Electric wires,
A wire harness comprising a wire sheathing body sheathed on the wire,
The wire outer package is
Consists of plastic sheets,
The sheet has groove-like ruled lines arranged on one of the front and back sides,
The ruled line is
Two groove side surfaces that are continuous from one side of the sheet and are arranged to face each other,
A wire harness in which at least one of the two groove side surfaces is a curved surface that inclines toward the center of the groove and swells toward the inside of the groove as the distance from the surface of the sheet increases.
A ruled line blade for forming a ruled line on the sheet by pressing one of the front and back surfaces of the plastic sheet,
A main body portion and a blade portion continuous from the main body portion;
The blade portion includes two pressing side surfaces arranged to face each other,
A ruled line blade in which at least one of the two pressing side surfaces is inclined toward the other side as the distance from the main body is increased, and is a curved surface that is recessed toward the inside.