JP2022139896A - Branch portion protection structure, and wire harness - Google Patents

Abstract

To provide branch portion protection structure capable of protecting a branch portion, with simple structure.SOLUTION: Branch portion protection structure 1 is provided for a wire harness 10 having a branch portion 13 in which a branch line 12 branches from a main line 11 extending in a longitudinal direction L and extends in a cross direction W crossing the longitudinal direction L. The branch portion protection structure 1 comprises: a pair of cylindrical main exterior bodies 20, 20 into which both sides in the longitudinal direction L, of the branch portion 13 of the main line 11 are respectively inserted; and a branch portion exterior body 40 (a first branch portion exterior body 50 and a second branch portion exterior body 60) extrapolated to the branch portion 13 between the pair of main exterior bodies 20, 20, the first branch exterior body 50 and the second branch exterior body 60 have a shape similar to a part of the cylindrical cross section of the main exterior bodies 20, 20, and both ends in the longitudinal direction L, of the branch exterior body 40 (the first branch exterior body 50 and the second branch exterior body 60) overlap for a predetermined length in the longitudinal direction L, the end portions of the main exterior bodies 20, 20 arranged on both sides in the longitudinal direction L, of the branch portion 13 L.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a branch protection structure and a wire harness for protecting a branch where a branch line branches from a main line.

A long wire harness that electrically connects electrical devices mounted on an automobile is two-dimensional or three-dimensional, combining straight portions and curved portions according to the uneven shape of the vehicle. It is routed in a dimensionally complex route.

The wire harness is flexible and sometimes protected by being inserted through an exterior body such as an elongated hollow corrugated tube. However, since the branch wires interfere with the corrugated tube at the branched portion where the branch wire branches from the main wire of the wire harness, the corrugated tube cannot be sheathed.

In order to protect such a branched portion between the trunk line and the branch line, for example, a wiring harness branching structure in which an opening is provided by notching a portion of the circumferential direction at the end of the corrugated tube, and the branch line extends from the opening. is disclosed in Patent Document 1.

More specifically, the branch wire extends from an opening formed by cutting a part of the corrugated tube along the longitudinal direction along the longitudinal direction from the end of the corrugated tube, and another corrugated wire is attached to the end of the corrugated tube. By assembling the tube, it is possible to cover the bifurcation with the corrugated tube and protect the bifurcation. However, in the wiring harness branching structure of Patent Document 1, it is necessary to remove a portion of the outer surface of the exterior body through which the main wire is inserted in the circumferential direction, which complicates the structure.

JP 2009-240062 A

SUMMARY OF THE INVENTION An object of the present invention is to provide a branch protection structure and a wire harness that can protect a branch with a simple structure.

The present invention is a wire harness branch protection structure having a branch portion extending in an intersecting direction in which the branch line branches from a trunk line extending in a longitudinal direction and the branch line crosses the longitudinal direction. A pair of cylindrical exterior bodies for inserting each of the two sides in the direction inside, and a bifurcation exterior body for exteriorizing the bifurcation between the pair of exterior bodies are provided, and the bifurcation exterior body is It has a cross-sectional shape that matches or is similar to a part of the cylindrical cross section of the armor body, and both ends in the longitudinal direction of the branch part armor body are arranged on both sides of the branch part in the longitudinal direction. It is characterized in that it overlaps with the end portion by a predetermined length in the longitudinal direction.

According to another aspect of the present invention, there is provided a wire harness having a trunk wire extending in a longitudinal direction and a branch wire extending in a crossing direction that intersects the longitudinal direction, wherein the branch wire is branched from the trunk wire. The branched portion is protected by the branched portion protection structure.

The branch part exterior body includes one or a plurality of cases.
Further, the branch portion exterior body may be made of the same material as or a different material from the exterior body.

Furthermore, the branch portion exterior body may be formed by processing an exterior body having the same or similar cross-sectional shape as the exterior body through which the trunk line is inserted. For example, in the case where the exterior body is a flexible cylindrical body with a circular cross section, the branch exterior body is formed by dividing the exterior body with a circular cross section into a plurality of pieces along the longitudinal direction. good too.

According to the present invention, the branch can be protected with a simple structure.
More specifically, since the cross-sectional shape of the branching portion exterior body matches or resembles a portion of the cylindrical cross section of the exterior body, the branching portion can easily overlap the end portion of the exterior body for a predetermined length in the longitudinal direction. An external body can be arranged. Therefore, it is possible to attach the branch part exterior body to the branch part arranged between the exterior bodies and protect the branch part without processing the ends of the pair of exterior bodies.

As an aspect of the present invention, the end of the branching portion exterior body may be arranged along the outer surface of the end of the exterior body.
According to the present invention, it is possible to arrange the branch portion exterior body on the exterior body after the exterior body is attached to the main line. Therefore, the branching part can be protected while the branching part exterior body is more easily arranged along the outer surface of the exterior body.

Further, as an aspect of the present invention, the branching portion exterior body may be formed with a similar cross section that is larger than a part of the cylindrical cross section of the exterior body.
According to the present invention, the branch portion exterior body formed to have a shape similar in cross section to the outer surface of the exterior body can be easily disposed along the outer surface of the exterior body.

Moreover, as a mode of this invention, the edge part of the said branch part exterior body may be fixed with respect to the said exterior body.
According to the present invention, it is possible to prevent the branching portion exterior body from being detached from the exterior body, so that the branching portion can be protected more reliably.

Further, as an aspect of the present invention, the end of the branching portion exterior body may be arranged along the inner surface of the end of the exterior body.
According to the present invention, since the branching portion exterior body is inserted into the cylindrical exterior body along the inner surfaces of the pair of exterior bodies, the structure is simple and the branching portion exterior body is inadvertently separated from the exterior body. The bifurcation can be reliably protected without detachment.

Further, as an aspect of the present invention, the branching portion exterior body may be formed with a similar cross section smaller than a portion of the cylindrical cross section of the exterior body.
According to the present invention, the branch portion exterior body formed to have a shape similar in cross section to the inner surface of the exterior body can be easily disposed along the inner surface of the exterior body. In addition, since the branch portion exterior body can be easily inserted into the exterior body, the work efficiency in the mounting work can be improved.

Further, as an aspect of the present invention, the armor on one side of the branch in the longitudinal direction has a cylindrical cross-sectional shape smaller than the armor on the other side, and one of the two ends of the branch armor is The end portion may be arranged along the outer surface of the end portion of the armor body, and the other end of the both end portions of the branch portion armor body may be arranged along the inner surface of the end portion of the armor body. good.

According to the present invention, even if the inner and outer diameters of the outer covering arranged on one side in the longitudinal direction of the branch and the outer covering arranged on the other side are different, the outer covering can be easily A bifurcation armor can be arranged in the . As a result, it is possible to cope with various trunk wiring routes, and the degree of freedom in design is improved.

Further, as an aspect of the present invention, the branching portion exterior body has a similar cross section larger than a portion of the cylindrical cross section of the exterior body on one side and a similar cross section smaller than a portion of the cylindrical cross section of the exterior body on the other side. may be formed.

According to the present invention, one side of the bifurcation exterior body can be easily arranged along the outer surface of the exterior body on one side in the longitudinal direction, and the other side of the bifurcation exterior body can be arranged in the longitudinal direction. It can be easily arranged along the inner surface of the exterior body on the other side. This makes it possible to easily dispose the branch portion exterior body so as to overlap the pair of exterior bodies in the longitudinal direction.

Further, as an aspect of the present invention, the exterior body may have a circular cross section, and the branch exterior body may have an arcuate cross section.
According to the present invention, by arranging the open portion of the branching exterior body having an arc-shaped cross-section in the crossing direction in which the branch wire extends, the branching part sandwiched between the pair of exterior bodies having a circular-shaped cross-section is transformed into the branching body having an arc-shaped cross-section. It can be protected by an outer body.

Further, by making the cross-sectional shape of the bifurcation exterior body arc-shaped with respect to the exterior body having a circular cross-section, the arc-shaped bifurcation exterior body can be arranged in a desired circumferential direction in the cross section. For this reason, the open portion of the branch portion exterior can be appropriately arranged so as to correspond to the intersecting direction in which the branch wires extend. Therefore, it is possible to reduce the number of parts without the need to prepare a variety of branch exterior bodies.

Further, as an aspect of the present invention, a plurality of the branch portion exterior bodies may be provided in the circumferential direction of the trunk line, and the branch portion exterior bodies adjacent in the cross-sectional direction may partially overlap in the circumferential direction.
According to the present invention, it is possible to partially overlap a plurality of branch portion exterior bodies to eliminate gaps between the branch portion exterior bodies, so that the branch portion can be reliably protected by using the plurality of branch portion exterior bodies. can be done.

Also, by stacking a plurality of branching exterior bodies, it is possible to adjust the size of the gap between the adjacent branching exterior bodies. Thereby, it is possible to adjust the gap between the adjacent branch portion exterior bodies to a size that matches the outer diameter of the branch wire.

Furthermore, it is possible to reliably protect the branch while providing an opening through which the branch wire is inserted, without preparing branch-part exterior bodies having different arc lengths. That is, since the branching portion can be protected only by the branching portion armoring body having the same arc length, the number of parts can be reduced.

Further, as an aspect of the present invention, the branch portion is provided with a plurality of branch wires extending in different directions in the cross-sectional direction, and the branch portion exterior body is provided in a plurality, and the plurality of branch wires extending in different directions in the cross-sectional direction are provided. may be placed between
According to the present invention, it is possible to protect between a plurality of branch wires extending in different directions at the branch portion.

Further, as an aspect of the present invention, a plurality of the branching portion exterior bodies may be provided in the longitudinal direction, and the branching portion exterior bodies adjacent to each other in the longitudinal direction may partially overlap in the longitudinal direction.
According to the present invention, it is possible to protect branched portions in which branch lines extend in different crossing directions.

More specifically, a plurality of branching exterior bodies are arranged at desired positions in the cross section in the circumferential direction so that the open portions of the arc are aligned in the crossing direction of the branch lines, and the trunk line is inserted through the branching exterior bodies. By pulling out the branch wires from the open portion, the branch wires can be extended from the open portion while the branch portions are protected by the overlapping branch portion exterior bodies.

Further, as an aspect of the present invention, the arc length of the arcuate cross-section of the branching portion exterior body may gradually change along the longitudinal direction.
The above-mentioned gradual change in the arc length of the arcuate cross section along the longitudinal direction includes cases where the arc length of the arcuate cross section increases or decreases along the longitudinal direction. In addition, the arc length of the arc-shaped cross section may be gradually shortened or lengthened from the location corresponding to the branched portion toward each of the exterior bodies.

Various branches can be protected by this invention.
For example, when branch wires extend in the intersecting direction near the center of a pair of armor bodies, branch wires can be extended by using a branch part armor body in which the arc length of the arc-shaped cross section gradually decreases along the longitudinal direction. The outer periphery of the main line around the ends of the pair of exterior bodies can be better protected while the extending direction is reliably opened.

In addition, when the branch wires extend in the crossing direction in the vicinity of the respective ends of the pair of exterior bodies, a bifurcation exterior body is used in which the arc length of the arc-shaped cross section gradually decreases toward the exterior bodies. Thus, the outer periphery of the trunk line between the branch lines can be protected while opening the direction in which the branch lines extend around the ends of the pair of exterior bodies.

In this way, it is possible to open the direction in which the branch lines extend while protecting the trunk line corresponding to various branch portions where the branch lines extend from the trunk line. As a result, while protecting the main line, it is possible to prevent the branch line from interfering with the branch portion exterior body and being damaged.

ADVANTAGE OF THE INVENTION By this invention, the branch part protection structure which can protect a branch part with a simple structure, and a wire harness can be provided.

FIG. 4 is a schematic perspective view of a branch protection structure; FIG. 4 is a schematic exploded perspective view of the branch protection structure; FIG. 4 is a schematic perspective view of a branching exterior body; The top view and side view of a branch part protection structure. Sectional drawing of branch part protection structure. Explanatory drawing of another usage method of a branch part protection structure. The schematic perspective view of the branch part protection structure in other embodiment. The schematic exploded perspective view of the branch part protection structure in other embodiment. The side view and sectional drawing of the branch part protection structure in other embodiment. Explanatory drawing of the branch part protection structure in other embodiment. The top view of the branch part protection structure in other embodiment. The schematic perspective view of the branch part protection structure in other embodiment. The side view and sectional drawing of the branch part protection structure in other embodiment.

The present invention provides a branch protection structure for protecting a branch in a wire harness having a branch where a branch line branches from a main line. An embodiment of the present invention will be described below with reference to FIGS. 1 to 6. FIG.

(First embodiment)
FIG. 1 shows a schematic perspective view of the branch protection structure 1, FIG. 2 shows a schematic exploded perspective view of the branch protection structure 1, and FIG. indicates 4 shows a plan view and a side view of the branch protection structure 1, FIG. 5 shows a sectional view of the branch protection structure 1, and FIG.

3 to 6 will be described in detail. FIG. 3(a) shows a schematic perspective view of the exterior body 50A before manufacturing the first branch exterior body 50, and FIG. A schematic perspective view of the body 50 is shown.

FIG. 4(a) shows a plan view of the branch protection structure 1, and FIG. 4(b) shows a side view of the branch protection structure 1 viewed from the direction in which the branch wire 12 extends. 5(a) shows a cross-sectional view taken along line AA in FIG. 4(a), and FIG. 5(b) shows a cross-sectional view taken along line BB in FIG. 4(b).

FIG. 6(a) shows a schematic perspective view of a branch portion protection structure 1 that protects a branch portion 13 in which branch wires 12 extend in two directions, and FIG. 1 shows a side view of the branch protection structure 1 viewed from the direction; FIG.

In order to facilitate understanding of the overall structure, except for a part of FIGS. It is omitted and the corrugated tube is illustrated as a cylinder.

Here, for the sake of convenience, the longitudinal direction of the trunk line 11 in FIG. Moreover, the longitudinal direction L and the cross direction W are assumed to be orthogonal to each other, and the upper side and the lower side in FIG. 1 are defined as the upper side and the lower side. Furthermore, in FIG. 1, the right side along the longitudinal direction L is the distal side Lf, and the left side is the proximal side Lb.
These directions are the same in FIGS. 2 to 13 as well.

As shown in FIG. 1 , the branch protection structure 1 is a structure for protecting a branch 13 where a main line 11 and a branch line 12 branch in a wire harness 10 routed in a vehicle. A pair of cylindrical main exterior bodies 20, 20 respectively inserted into both sides of the branch portion 13 in the longitudinal direction L of the branch portion 11, and a sub-exterior that penetrates and protects the branch line 12 branched from the trunk line 11. It is composed of a body 30 and a branch portion exterior body 40 that is fitted to the branch portion 13 between the main exterior bodies 20 , 20 .

A trunk line 11 that constitutes the wire harness 10 is a bundle of covered wires in which conductive wires are covered with an insulating coating, and is connected to, for example, a battery.
The branch line 12 is a covered electric wire drawn out from the main line 11 in the cross direction W, and is connected to electronic equipment mounted on a vehicle, for example. A branched portion where the branch line 12 is pulled out from the trunk line 11 is referred to as a branched portion 13 .

The main exterior bodies 20 , 20 are cylindrical corrugated tubes made of resin into which the main line 11 can be inserted, and are provided at both ends in the longitudinal direction L of the branched portion 13 . The main exterior body 20 has a bellows structure in which main protrusions 21 and main grooves 22 are alternately arranged along the longitudinal direction L (see FIG. 5(b)). The main exterior body 20 having a bellows structure in this way has flexibility.

The sub-exterior body 30 is a resin-made corrugated tube having a cylindrical shape through which the branch wire 12 extending in the cross direction W can be inserted. Since the sub-exterior body 30 has the same configuration as the main exterior body 20, the description thereof will be omitted.

The branching portion exterior body 40 protects the branching portion 13 as shown in FIGS. 1 and 2 . The branching part exterior body 40 is composed of a first branching part exterior body 50 and a second branching part exterior body 60 arranged so as to connect the main exterior bodies 20, 20 arranged with the branching part 13 interposed therebetween. ing.

The first branch exterior body 50 is a resin-made corrugated tube configured in a semi-cylindrical shape, and has a bellows structure in which the first branch protrusions 51 and the first branch grooves 52 are alternately arranged along the longitudinal direction L. (see FIG. 5(b)).

The first branch exterior body 50 has a shape similar to a portion of the cross-sectional shape of the main exterior body 20 , and is configured such that the inner diameter is equal to the outer diameter of the main exterior body 20 . In addition, the pitch between the first branched raised portion 51 and the first branched groove portion 52 is configured to correspond to the pitch between the main raised portion 21 and the main grooved portion 22, and the length along the longitudinal direction L is the same as the branched portion 13. It is configured to be longer than the interval between the main exterior bodies 20, 20 arranged.

In addition, as shown in FIG. 3, the first branch portion exterior body 50 is manufactured by dividing an exterior body 50A, which is a resin-made corrugated tube having a cylindrical shape, into two along the longitudinal direction L. As shown in FIG. That is, two first branch portion exterior bodies 50 having the same shape are manufactured from the exterior body 50A.

Like the first branch outer body 50, the second branch outer body 60 is a corrugated tube made of resin and configured in a semi-cylindrical shape. It is composed of a bellows structure alternately arranged along L (see FIG. 5(b)).

The second branch exterior body 60 has a shape similar to a portion of the cross-sectional shape of the main exterior body 20 , and is configured such that the inner diameter is equal to the outer diameter of the first branch exterior body 50 . In addition, the pitch between the second branched raised portion 61 and the second branched groove portion 62 is configured to correspond to the pitch between the first branched raised portion 51 and the first branched groove portion 52, and the length along the longitudinal direction L is As with the one-branch portion exterior body 50, it is configured to be longer than the interval between the main exterior bodies 20, 20 arranged with the branch portion 13 interposed therebetween.
It should be noted that, similarly to the first branch outer body 50, the second branch outer body 60 is manufactured by dividing a cylindrical corrugated tube made of resin into two (not shown).

As shown in FIGS. 1, 4, and 5, the first branching outer body 50 and the second branching outer body 60 configured in this way are arranged at least in the direction opposite to the direction in which the branch wire 12 extends at the branching part 13. The branching portion 13 is protected by covering the .

More specifically, as shown in FIGS. 2 and 5A, in a front view, the first branch exterior body 50 is rotated counterclockwise by 45 degrees so as to follow the outer peripheral surface of the main exterior body 20. are placed in Here, since the length in the longitudinal direction L of the first branch exterior body 50 is configured to be longer than the interval between the pair of main exterior bodies 20, 20, the length of the first branch exterior body 50 Both ends in the direction L overlap the ends of the main exterior bodies 20, 20 arranged on both sides in the longitudinal direction L of the branch portion 13 for a predetermined length along the longitudinal direction L. As shown in FIG.

As shown in FIG. 5(b), in the first branch exterior body 50 arranged so as to overlap at the ends of the main exterior bodies 20, 20, the first branch protuberance 51 and the main groove 22 The first branch grooves 52 are fitted with the main protrusions 21 respectively. Therefore, movement in the longitudinal direction L of the first branch exterior body 50 with respect to the main exterior body 20 can be suppressed.
It should be noted that the first branch exterior body 50 is fixed to the main exterior body 20 using a tape B1 (see FIG. 1).

Similarly, when viewed from the front, the second branch exterior body 60 is arranged along the outer peripheral surface of the main exterior body 20 while being rotated clockwise by 45 degrees. That is, the second branch exterior body 60 partially overlaps in the circumferential direction with the first branch exterior body 50 adjacent in the cross-sectional direction on the opposite side of the branch line 12 in the direction in which the branch line 12 extends. .

In addition, the inner diameter of the second branch exterior body 60 is configured to be equal to the outer diameter of the first branch exterior body 50, and the length of the second branch exterior body 60 in the longitudinal direction L is equal to that of the pair of main bodies. It is configured to be longer than the interval between the exterior bodies 20 , 20 . Therefore, the second branch exterior body 60 partially overlaps the first branch exterior body 50 in the circumferential direction along the longitudinal direction L, and both ends of the second branch exterior body 60 in the longitudinal direction L It overlaps with the ends of the main exterior bodies 20, 20 arranged on both sides in the longitudinal direction L of the branch part 13 along the longitudinal direction L for a predetermined length.

As shown in FIG. 5(b), the second branching protrusion 61 overlaps the first branching groove 52 and the second branching groove 52 in the circumferential direction. The two-branched grooves 62 are fitted with the second branched protrusions 61 respectively. Therefore, the movement in the longitudinal direction L of the second branch exterior body 60 with respect to the first branch exterior body 50 can be suppressed.
It should be noted that the second branch exterior body 60 is fixed to the main exterior body 20 using a tape B2 (see FIG. 1).

In this way, the first branch exterior body 50 is arranged to cover the upper side of the branch section 13 , and the second branch exterior body 60 is arranged to cover the lower side of the branch section 13 . As a result, at least the direction opposite to the direction in which the branch wire 12 extends in the branch portion 13 can be covered with the branch portion exterior body 40, and the open portions of the first branch portion exterior body 50 and the second branch portion exterior body 60 are formed. While extending the branch wire 12 from the opening, the opening can be prevented from widening excessively (see FIGS. 4(b) and 5(a)).

In addition, since the first branch exterior body 50 and the second branch exterior body 60 can be arranged on the outer surface of the main exterior body 20, the first branch exterior body 50 and the second branch exterior body 50 and the second branch exterior body 50 and the second branch exterior body can be mounted after the wire harness 10 is routed. The body 60 can be easily attached to the main exterior body 20 .

Further, for example, as shown in FIGS. 6A and 6B, when a plurality of branch lines 12 branch from the main line 11 along the longitudinal direction L, one of the main exterior bodies 20, 20 By arranging the first branch outer covering body 50 and the second branch outer covering body 60 respectively so as to follow the chisel, it is possible to protect the branch part 13 in which the plurality of branch wires 12 are branched.

A brief description will be given below.
Here, as shown in FIG. 6A, of the two branch lines 12 branched along the cross direction W, the branch line 12 on the distal end side Lf is defined as a first branch line 121, and the branch line on the proximal end side Lb is defined as a first branch line 121. Let the line 12 be the second branch line 122 .

In this case, the first branch exterior body 50 is arranged so that the open portion faces the direction in which the first branch line 121 extends and is arranged along the outer surface of the main exterior body 20 on the tip side Lf, and the second branch exterior body The open portion of 60 faces downward, which is the direction in which the second branch line 122 extends, and along the outer surface of the main exterior body 20 on the proximal side Lb and the outer surface of the first branch exterior body 50 on the proximal side Lb. The second branch exterior body 60 is arranged.

Thereby, at least the direction opposite to the extending direction of the first branch wire 121 and the second branch wire 122 in the branch portion 13 can be protected by the first branch portion exterior body 50 and the second branch portion exterior body 60 . In addition, one side in the width direction of the distal end side Lf of the branch portion 13 can be protected by the first branch portion exterior body 50 , and the upper side of the base end side Lb of the branch portion 13 can be protected by the second branch portion exterior body 60 .

The branch portion protection structure 1 configured in this way is a wire harness 10 having a branch portion 13 extending in a cross direction W in which the branch line 12 branches from a trunk line 11 extending in the longitudinal direction L and intersects the longitudinal direction L. A pair of cylindrical main exterior bodies 20, 20 respectively inserted into both sides of the branch part 13 in the longitudinal direction L of the branch part 11, and a branch fitted to the branch part 13 between the pair of main exterior bodies 20, 20 A branch exterior body 40 (a first branch exterior body 50 and a second branch exterior body 60) is provided. The first branch exterior body 50 and the second branch exterior body 60 have a shape similar to a portion of the cylindrical cross section of the main exterior bodies 20 , 20 . Further, both ends in the longitudinal direction L of the branching portion exterior body 40 (the first branching portion exterior body 50 and the second branching portion exterior body 60) are located on both sides of the branching portion 13 in the longitudinal direction L. , 20 for a predetermined length in the longitudinal direction L.

For this reason, the branching part exterior body 40 (the first branching part exterior body 50 and the second branching part exterior body 60) is arranged so as to easily overlap the ends of the main exterior bodies 20, 20 by a predetermined length in the longitudinal direction L. can be placed. As a result, there is no need to process the ends of the pair of main exterior bodies 20, 20, and the branch exterior body 40 (the first branch exterior body 50) can be attached to the branch section 13 disposed between the main exterior bodies 20, 20. and a second branch portion outer body 60 ) can be attached to protect the branch portion 13 .

In addition, since the ends of the branch exterior body 40 (the first branch exterior body 50 and the second branch exterior body 60) are arranged along the outer surfaces of the ends of the main exterior bodies 20, 20, With the main exterior bodies 20, 20 attached to the main line 11, the branch exterior bodies 40 (the first branch exterior body 50 and the second branch exterior body 60) are attached to the main exterior bodies 20, 20 later. can be placed. Therefore, it is possible to more easily protect the branch portion 13 while arranging the branch portion exterior body 40 (the first branch portion exterior body 50 and the second branch portion exterior body 60) along the outer surfaces of the main exterior bodies 20, 20. can be done.

Furthermore, the branching portion exterior body 40 (the first branching portion exterior body 50 and the second branching portion exterior body 60) is formed with a similar cross section that is larger than a part of the cylindrical cross section of the main exterior bodies 20, 20. Thus, the branch exterior body 40 (the first branch exterior body 50 and the second branch exterior body 60) formed to have a shape similar in cross section to the outer surfaces of the main exterior bodies 20, 20 is attached to the outer surfaces of the main exterior bodies 20, 20. can be easily aligned with the

In addition, since the ends of the branching exterior body 40 (the first branching exterior body 50 and the second branching exterior body 60) are fixed to the main exterior bodies 20, 20, the branching exterior body 40 is Since it is possible to prevent (the first branch portion exterior body 50 and the second branch portion exterior body 60) from separating from the main exterior bodies 20, 20, the branch portion 13 can be protected more reliably.

Furthermore, the main exterior bodies 20, 20 have a circular cross section, and the branch exterior body 40 (the first branch exterior body 50 and the second branch exterior body 60) has an arc-shaped cross section. By arranging the open portions of the arcuate branching exterior bodies 40 (the first branching exterior body 50 and the second branching exterior body 60) in the crossing direction W in which the branch wires 12 extend, a pair of main wires having a circular cross-section can be formed. The branch part 13 sandwiched between the armor bodies 20, 20 can be protected by the branch part armor body 40 (the first branch part armor body 50 and the second branch part armor body 60) having an arc-shaped cross section.

In addition, in contrast to the main exterior bodies 20, 20 having a circular cross-section, the branch exterior body 40 (the first branch exterior body 50 and the second branch exterior body 60) has an arcuate cross-sectional shape. Arc-shaped branching exterior body 40 (first branching exterior body 50 and second branching exterior body 60) can be arranged in a desired circumferential direction. For this reason, the open portions of the branch exterior body 40 (the first branch exterior body 50 and the second branch exterior body 60) can be appropriately arranged so as to correspond to the cross direction W in which the branch wire 12 extends. Therefore, it is not necessary to prepare various branching portion exterior bodies 40 (the first branching portion exterior body 50 and the second branching portion exterior body 60), and the number of parts can be reduced.

In addition, a plurality of first branch exterior bodies 50 and second branch exterior bodies 60 provided in the circumferential direction of the main line 11 are arranged so that the first branch exterior bodies 50 and the second branch exterior bodies 60 adjacent in the cross-sectional direction are By partially overlapping in the circumferential direction, a gap between the first branch exterior body 50 and the second branch exterior body 60 can be eliminated, so that the branch section 13 can be reliably protected.

By overlapping the first branch exterior body 50 and the second branch exterior body 60, the size of the gap between the adjacent first branch exterior body 50 and the second branch exterior body 60 can be adjusted. can. As a result, the gap between the adjacent first branch outer casing 50 and the second branch outer casing 60 can be adjusted to match the outer diameter of the branch wire 12 .

Furthermore, the branching portion 13 can be reliably protected while providing an opening through which the branch wire 12 is inserted without preparing the first branching portion exterior body 50 and the second branching portion exterior body 60 having different arc lengths. . That is, since the branching portion 13 can be protected only by the first branching portion exterior body 50 and the second branching portion exterior body 60 having the same arc length, the number of parts can be reduced.

Also, the first branch exterior body 50 and the second branch exterior body 60 provided along the longitudinal direction L are adjacent to each other in the longitudinal direction L. By partially overlapping in the longitudinal direction L, the branches 13 extending in different directions of the branch wires 12 can be protected.

More specifically, as shown in FIG. 6, the first branch outer casing 50 and the second branch outer casing 50 and the second branch outer casing are placed at desired positions in the cross section in the circumferential direction so that the open portions of the arc are aligned in the direction in which the branch wires 12 extend. By arranging the body 60 and inserting the trunk line 11 through the first branch exterior body 50 and the second branch exterior body 60, the branch line 12 is pulled out from the open portion, thereby overlapping the first branch exterior body 50 and the second branch exterior body 60. The branch wires 12 can be extended from the open portions of the first branch armor 50 and the second branch armor 60 while protecting the trunk line 11 with the second branch armor 60 .

In correspondence with the configuration of this invention and the above-described embodiments,
The longitudinal direction corresponds to the longitudinal direction L,
The trunk line corresponds to trunk line 11,
The branch line corresponds to the branch line 12,
the cross direction corresponds to the cross direction W,
The branching portion corresponds to the branching portion 13,
The wire harness corresponds to the wire harness 10,
The branch protection structure corresponds to the branch protection structure 1,
The exterior body corresponds to the main exterior body 20,
The branch exterior body corresponds to the branch exterior body 40 (the first branch exterior body 50 and the second branch exterior body 60).
The present invention is not limited to the configurations of the embodiments described above, and many embodiments can be obtained.

In addition, in other embodiments described below, the same numbers are attached to the same configurations as in the first embodiment, and the description thereof is omitted. Moreover, the contents described in each embodiment in this specification cannot be implemented only in each embodiment, and the combination thereof can be appropriately changed as long as the effect is exhibited.

For example, in the present embodiment, the first branch exterior body 50 and the second branch exterior body 60 are formed of semi-cylindrical shapes and are arranged along the outer surface of the main exterior body 20, but they are not necessarily semi-cylindrical. It does not need to be there, nor does it necessarily need to follow the outer surface of the main exterior body 20 .

Specifically, as shown in the branch protection structure 1w shown in FIG. 7, a branch exterior body 40w composed of a pair of third branch exterior bodies 50w and 50w each having a quarter-cylindrical shape is attached to the main exterior body. You may make it follow the inner surface of 20. FIG. The branch protection structure 1w will be briefly described below with reference to FIGS. 7 to 9. FIG.

Here, FIG. 7 shows a schematic perspective view of the branch protection structure 1w, FIG. 8 shows a schematic exploded perspective view of the branch protection structure 1w, and FIG. 9 shows a side view and a sectional view of the branch protection structure 1w. . FIG. 9(a) shows a side view of the branch protection structure 1w, and FIG. 9(b) shows a cross-sectional view taken along line CC in FIG. 9(a).

As shown in FIG. 7, the branch protection structure 1w includes a wire harness 10 in which the branch wires 12 extend in two directions with respect to the trunk line 11, and both sides of the branch portion 13 of the trunk line 11 in the longitudinal direction L. a pair of cylindrical main exterior bodies 20, 20 inserted through the main exterior bodies 20, 20, sub-exterior bodies 30, 30 for protecting the branch lines 12, 12 branched from the main line 11 and inserted therein, and between the main exterior bodies 20, 20 and a branching portion exterior body 40w (a pair of third branching portion exterior bodies 50w, 50w) that exterior the branching portion 13.

As shown in FIGS. 8 and 9, the third branching outer body 50w is a resin-made corrugated tube configured in a quarter-cylindrical shape. and the first branched groove portions 52 are alternately arranged along the longitudinal direction L to form a bellows structure.

The third branch portion exterior body 50 w has a cross-sectional shape similar to that of the main exterior body 20 , and is configured such that the outer diameter is equal to the inner diameter of the main exterior body 20 . In addition, the pitch between the first branched raised portion 51 and the first branched groove portion 52 is configured to correspond to the pitch between the main raised portion 21 and the main grooved portion 22, and the length along the longitudinal direction L is the same as the branched portion 13. It is configured to be longer than the interval between the main exterior bodies 20, 20 arranged.

The third branch portion outer body 50w is manufactured by dividing the outer body 50A, which is a resin-made corrugated tube having a cylindrical shape, into four along the longitudinal direction L. As shown in FIG. That is, four third branch portion exterior bodies 50w having the same shape are manufactured from the exterior body 50A (not shown).

As shown in FIGS. 7 to 9, the branch line 12 is branched in two directions with respect to the trunk line 11 in the branch section exterior body 40w constituted by the pair of third branch section exterior bodies 50w and 50w in this manner. It is possible to protect the upper and lower portions of such a branch portion 13 .

More specifically, as shown in FIGS. 9A and 9B, the third branch exterior body 50w is arranged above and below the main exterior body 20 along the inner peripheral surface of the main exterior body 20. It is Here, since the length in the longitudinal direction L of the third branch exterior body 50w is configured to be longer than the interval between the pair of main exterior bodies 20, 20, the length of the third branch exterior body 50w Both ends in the direction L overlap the ends of the main exterior bodies 20, 20 arranged on both sides in the longitudinal direction L of the branch portion 13 for a predetermined length along the longitudinal direction L. As shown in FIG.

In addition, the third branch exterior bodies 50w, 50w arranged so as to overlap at the ends of the main exterior bodies 20, 20 have the first branch protuberance 51 as the main groove 22, and the first branch groove 52 as the main protuberance 21. are fitted with each other. Therefore, the movement of the third branch exterior bodies 50w, 50w in the longitudinal direction L with respect to the main exterior bodies 20, 20 can be suppressed.

In this manner, the ends of the branch portion exterior body 40w (the third branch portion exterior bodies 50w, 50w) are arranged along the inner surfaces of the ends of the main exterior bodies 20, 20. As shown in FIG. As a result, the third branch exterior bodies 50w and 50w are inserted into the cylindrical main exterior bodies 20 and 20 along the inner surfaces of the pair of main exterior bodies 20 and 20, so that the structure is simple and The branch portion 13 can be protected without the third branch portion exterior bodies 50w, 50w being carelessly separated from the main exterior bodies 20, 20.例文帳に追加

In addition, the third branch portion exterior body 50w is formed with a similar cross section smaller than a portion of the cylindrical cross section of the main exterior bodies 20,20. As a result, the third branch exterior body 50w, which has a shape similar in cross section to the inner surfaces of the main exterior bodies 20, 20, can be easily arranged along the inner surfaces of the main exterior bodies 20, 20. As shown in FIG. In addition, since the third branch portion exterior body 50w can be easily inserted into the main exterior bodies 20, 20, the work efficiency in the mounting work can be improved.

In addition, the branch portion 13 is provided with a plurality of branch wires 12 extending in different directions in the cross-sectional direction, and a plurality of the third branch portion exterior bodies 50w are provided, and the plurality of branch wires 12 extending in different cross-sectional directions are connected to each other. placed in between. As a result, the space between the branch wires 12 extending in different directions in the branch portion 13 can also be protected.

In addition, in the first embodiment, the branching portion 13 is protected by the branching portion exterior body 40 configured by the first branching portion exterior body 50 and the second branching portion exterior body 60 each having a semi-cylindrical shape. The branch portion 13 may be protected by only one first branch portion exterior body 50 . Furthermore, as shown in FIG. 10, the branching portion 13 may be protected by a branching portion exterior body 40x having an arc-shaped cross section whose arc length gradually changes along the longitudinal direction L. As shown in FIG.
Here, FIG. 10(a) shows a schematic perspective view of a branch protection structure 1x that protects the branch 13 with the branch part armor 40x, and FIG. 10(b) shows a plan view of the branch protection structure 1x.

More specifically, the branching portion exterior body 40x is a resin corrugated tube having an arcuate cross section, and the arc length at both ends is three-quarters of the circumference of a circle having the same radius. The arc length of the arcuate cross-section is gradually shortened as it approaches the branched portion 13 along the longitudinal direction L from both ends. In addition, the arc length at the central portion of the branch portion exterior body 40x has a length that is half the circumferential length of the circle.

The branch portion exterior body 40x configured in this way is arranged such that the open portion faces the direction in which the branch wire 12 extends, and both ends thereof are arranged along the outer surfaces of the pair of main exterior bodies 20, 20. As shown in FIG. As a result, the trunk line 11 at the ends of the main exterior bodies 20, 20 can be more reliably protected, and the branching portion 13 where the branch line 12 branches can be protected.

Further, as shown in FIG. 11, a branching portion exterior body 40y is used, which is composed of a fourth branching portion exterior body 50y and a fifth branching portion exterior body 60y having an arc-shaped cross section with a longer arc length along the longitudinal direction L. Thus, branch lines 12 arranged along the longitudinal direction L may protect the branch portions 13 extending toward both sides in the cross direction W.
FIG. 11 shows a schematic perspective view of a branch protection structure 1y that protects the branch 13 with the branch armor 40y.

To be more specific, the fourth branch exterior body 50y that constitutes the branch exterior body 40y has an arc length on one side (front end side Lf) in the longitudinal direction L that is the same radius as the outer diameter of the main exterior body 20. The length of the circular arc-shaped cross section gradually increases along the longitudinal direction L from the distal end side Lf toward the proximal end side Lb. In addition, the arc length of the end portion of the base end side Lb in the fourth branch exterior body 50y has a length of three-fourths of the circumference length of a circle formed with the same radius, and the outer diameter of the main exterior body 20 is has the same inner diameter as

In addition, the fifth branch exterior body 60y that constitutes the branch exterior body 40y has an inner diameter that is the same as the outer diameter of the first branch exterior body 50 in arc length on the other side (base end side Lb) in the longitudinal direction L. The arc length of the arc-shaped cross section gradually increases as it approaches the distal end side Lf along the longitudinal direction L from the proximal end side Lb. . The arc length of the end portion on the base end side Lb of the fifth branch portion exterior body 60y has a length that is three-fourths the circumference length of a circle having the same radius.

The fourth branching exterior body 50y configured in this way is arranged so that the open portion faces the extending direction of the branch wire 12 branched at the tip side Lf and partially overlaps the outer surface of the main exterior body 20. - 特許庁Further, similarly to the fourth branch exterior body 50y, the open portion faces the extending direction of the branch line 12 branched at the base end side Lb, and the base end side Lb is the outer surface and the tip side of the fourth branch exterior body 50y. The fifth branch exterior body 60 y is arranged so that Lf partially overlaps the outer surface of the main exterior body 20 . Thereby, the branching part 13 can be protected while the branch wire 12 extends from the open portions of the fourth branching part exterior body 50y and the fifth branching part exterior body 60y.

Various branches 13 can be protected by gradually changing the arc length of the arcuate cross section along the longitudinal direction L like the branching portion exterior bodies 40x and 40y.
That is, as shown in FIG. 10, when the branch wire 12 extends in the crossing direction W near the center of the pair of main exterior bodies 20, 20, the arc length of the arcuate cross section increases in the longitudinal direction as it goes toward the branch portion 13. By using the branch portion exterior body 40x that gradually becomes shorter along L, the outer circumference of the trunk line 11 around the ends of the pair of main exterior bodies 20, 20 can be widened while reliably opening the direction in which the branch line 12 extends. can be protected.

Also, as shown in FIG. 11, when the branch wires 12 extend in a plurality of directions along the crossing direction W near the respective ends of the pair of main exterior bodies 20, 20, the arc length of the arc-shaped cross section is the main length. By using a combination of the fourth branch portion exterior body 50y and the fifth branch portion exterior body 60y, which gradually become shorter toward the exterior bodies 20, 20, around the ends of the pair of main exterior bodies 20, 20, the branches are formed. The outer circumference of the trunk line 11 between the branch lines 12 can be protected while the direction in which the line 12 extends is reliably opened.

In this way, it is possible to protect the trunk line 11 while opening the direction in which the branch line 12 extends in various cases where the branch line 12 extends from the trunk line 11 . As a result, while protecting the main line 11, it is possible to prevent the branch line 12 from interfering with and damaging the branching portion exterior body 40x and the branching portion exterior body 40y.

Furthermore, as shown in FIGS. 12 and 13, by using a branching exterior body 40z instead of the branching exterior body 40x, the branching section between the main exterior body 20 and the main exterior body 20z having different inner diameters 13 can be protected.

Here, FIG. 12 shows a schematic perspective view of a branch protection structure 1z that protects the branch 13 using the main exterior body 20z. FIG. 13(a) shows a side view of the branch protection structure 1z viewed from the direction in which the branch wire 12 extends, and FIG. 13(b) shows a cross-sectional view taken along line DD in FIG. 13(a).

More specifically, as shown in FIGS. 12 and 13, a pair of main exterior bodies 20 and 20z through which the trunk lines 11 on both sides in the longitudinal direction L of the branch portions 13 on both sides in the longitudinal direction of the branch portion are inserted are provided at the tip end. The main exterior body 20z arranged on the side Lf has a smaller diameter than the main exterior body 20. - 特許庁

A branch portion exterior body 40z that is mounted on the branch portion 13 between the main exterior bodies 20 and 20z has the same basic structure as the first branch portion exterior body 50 . The branching exterior body 40z has an arcuate cross-section formed by cutting a portion of a circle whose inner diameter is equal to the outer diameter of the main exterior body 20z and whose outer diameter is equal to the inner diameter of the main exterior body 20 along the longitudinal direction L. is a cylindrical body of

As shown in FIGS. 13(a) and 13(b), the branch portion exterior body 40z configured in this way is arranged between the main exterior bodies 20 and 20z so that the base end side Lb is the main exterior body. It is arranged along the inner surface of the body 20, and the tip side Lf is arranged along the outer surface of the main exterior body 20z.

In addition, the main exterior bodies 20, 20 on one side in the longitudinal direction L of the branch portion 13 have a cylindrical cross-sectional shape smaller than the main exterior bodies 20, 20 on the other side, and one of the two ends of the branch portion exterior body 40z are arranged along the outer surfaces of the ends of the main exterior bodies 20, 20, and the other end of the two ends of the branch exterior body 40z is arranged along the inner surfaces of the ends of the main exterior bodies 20, 20 are placed along the

As a result, even if the main exterior bodies 20, 20 arranged on one side in the longitudinal direction L of the branch portion 13 and the main exterior bodies 20, 20 arranged on the other side have different inner diameters and outer diameters, The branch portion exterior body 40z can be easily arranged with respect to each of the main exterior bodies 20, 20. - 特許庁As a result, it is possible to deal with various wiring routes of the main line 11, and the degree of freedom in design is improved.

In addition, the branch part exterior body 40z has a similar cross section larger than a part of the cylindrical cross section of the main exterior bodies 20, 20 on one side and a similar cross section smaller than a part of the cylindrical cross section of the main exterior bodies 20, 20 on the other side. is formed by

For this reason, one side of the branch portion exterior body 40z can be easily arranged along the outer surface of the main exterior bodies 20, 20 on one side in the longitudinal direction L, and the other side of the branch portion exterior body 40z can be easily arranged. side can be easily arranged along the outer surface of the main exterior bodies 20, 20 on the other side in the longitudinal direction L. This makes it possible to easily arrange the branch part exterior body 40z so as to overlap the pair of main exterior bodies 20, 20 in the longitudinal direction L. As shown in FIG.

In addition, in the present embodiment, the main exterior bodies 20, 20, the first branch exterior body 50, the second branch exterior body 60, and the like are corrugated tubes made of resin. It is good also as a member of.

Furthermore, although the main exterior bodies 20, 20 have a circular cross section, the main exterior bodies 20, 20 may have a polygonal cross section.
In addition, the first branch exterior body 50 and the second branch exterior body 60 have a shape similar to the cross-sectional shape of the main exterior bodies 20, 20. good too. In this case, for example, the first branch exterior body 50 is fitted into the main exterior body 20 .

1, 1w, 1x, 1y, 1z branch protection structure 10 wire harness 11 trunk line 12 branch line 13 branch 20, 20z main exterior body 40, 40w, 40x, 40y, 40z branch exterior body 50 first branch exterior body 50w Third branch exterior body 50y Fourth branch exterior body 60 Second branch exterior body 60y Fifth branch exterior body L Longitudinal direction W Intersecting direction

Claims (14)

A branch protection structure for a wire harness having a branch portion extending in a crossing direction in which branch lines branch from a main line extending in a longitudinal direction and cross the longitudinal direction,
a pair of cylindrical exterior bodies that are respectively inserted into the interior of both sides of the branch portion of the trunk line in the longitudinal direction;
a branching part exterior body that covers the branching part between the pair of the exterior bodies,
The branch part exterior body has a cross-sectional shape that matches or is similar to a portion of the cylindrical cross section of the exterior body,
A branch protection structure in which both longitudinal ends of the branch exterior body overlap end portions of the exterior body disposed on both sides of the branch in the longitudinal direction by a predetermined length in the longitudinal direction. 2. The branch protection structure according to claim 1, wherein the edge of the branch armor is arranged along the outer surface of the edge of the armor. 3. The branch protection structure according to claim 2, wherein the branch exterior body is formed with a similar cross section that is larger than a portion of the cylindrical cross section of the exterior body. 4. The branch protection structure according to claim 2 or 3, wherein the end of the branch armor is fixed to the armor. 2. The branch protection structure according to claim 1, wherein the end of the branch exterior body is arranged along the inner surface of the end of the exterior body. 6. The branch protection structure according to claim 5, wherein the branch armor is formed with a similar cross section smaller than a portion of the cylindrical cross section of the armor. The exterior body on one side in the longitudinal direction from the branch portion has a cylindrical cross-sectional shape smaller than the exterior body on the other side,
one end of both ends of the branching exterior body is arranged along the outer surface of the end of the exterior body,
2 . The branch protection structure according to claim 1 , wherein the other end of the branch exterior body is arranged along the inner surface of the end of the exterior body. 8. According to claim 7, the branch portion exterior body is formed with a similar cross section larger than a portion of the cylindrical cross section of the exterior body on one side and a similar cross section smaller than a portion of the cylindrical cross section of the exterior body on the other side. Bifurcation protection structure as described. The exterior body has a circular cross section,
9. The branch protection structure according to any one of claims 1 to 8, wherein the branch armor has an arc-shaped cross section. A plurality of branching exterior bodies are provided in a circumferential direction of the main line,
10. The branch protection structure according to claim 9, wherein the branch exterior bodies adjacent to each other in the cross-sectional direction partially overlap in the circumferential direction. A plurality of branch lines extending in different directions in a cross-sectional direction are provided in the branched portion,
10. The branch protection structure according to claim 9, wherein a plurality of said branch exterior bodies are provided and arranged between a plurality of branch wires extending in different directions in a cross-sectional direction. A plurality of branching exterior bodies are provided in the longitudinal direction,
10. The branch protection structure according to claim 9, wherein the branch exterior bodies adjacent to each other in the longitudinal direction are partially overlapped in the longitudinal direction. The branch exterior body is
13. The branch protection structure according to any one of claims 9 to 12, wherein the arc length of the arcuate cross section gradually changes along the longitudinal direction. a trunk line extending in the longitudinal direction;
A wire harness having a branch wire extending in an intersecting direction that intersects the longitudinal direction,
A branch protection structure according to any one of claims 1 to 13,
A wire harness in which a branch portion where the branch line branches from the trunk line is protected by the branch portion protection structure.

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