JP2013225981A - Protector for wire harness branch portion - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protector with which a corrugate tube can be easily mounted to a wire harness having a branch portion.SOLUTION: A protector for a wire harness branch portion comprises a T-shaped mounting material including a lateral axis part whose cross section is arcuate, surrounding the half circumference of a trunk of a wire harness and a longitudinal axis part whose cross section is arcuate, protruding from the center of the lateral axis part in a length direction, branching from the trunk and surrounding the half circumference of a branch line. On outer surfaces of both side portions of the lateral axis part in the length direction, a pair of first and second guide sections are provided in a projected manner while being laterally opposed in a V shape from the center in the length direction toward the distal end. Slits provided in corrugate tubes externally mounted at both sides of the trunk holding the branch line of the wire harness therebetween is spread, divided edges of the slit are moved to the distal end along the outer surfaces of both sides of the first and second guides, respectively, and the slit is opened, such that the corrugate tube can be externally mounted to the trunk.

Description

  The present invention relates to a protector for a wire harness branching portion, and more particularly to a protector for protecting a portion where a branch line branches from a trunk line of a wire harness that is externally protected by a corrugated tube.

  In many cases, it is externally covered with a corrugated tube made of a resin molded product in order to focus and protect a group of wires of a wire harness arranged in an automobile. When the branch line branches off from the trunk line of the wire harness sheathed with the corrugated tube, as shown in FIG. 11, the corrugated tube 100 is provided with a round hole-shaped opening 100a at the branch position, and the trunk line W of the wire harness is formed from the opening 100a. Branch line W / H-2 branched from / H-1 is drawn to the outside.

  If there are burrs or edges in the opening of the corrugated tube at the branch position of the wire harness, the branch line may be damaged. Therefore, as shown in FIG. 12, in Japanese Patent Application Laid-Open No. 2007-288972, the present applicant, from the T-shaped tube portion to the position where the branch line W / H-2 branches from the trunk line W / H-1 of the wire harness. A branch protective material 110 is attached, and a corrugated tube 100 having an opening 100a provided on the branch protective material 110 is externally provided. After the corrugated tube 100 is sheathed, the corrugated tube 120 is also covered on the branch line side, and finally, the adhesive tape T is hooked and fixed to the branch portion.

JP 2007-288972 A

  When attaching the corrugated tube 100 after attaching the branch protection material 110 of Patent Document 1 shown in FIG. 12 to the branch position of the wire harness, first, an intermediate hole punching process in which an opening 100a is provided in advance at the branch position of the corrugated tube 100 is performed. This is necessary and the number of work steps increases. In addition, a dedicated threading tool for mounting the corrugated tube 100 on the wire harness to which the branch protection material 110 is attached is required. Furthermore, an operation for aligning the opening 100a of the corrugated tube 100 to the branch position, and an operation for pulling the branch portion side of the branch protective material 110 and the branch line W / H-2 from the opening 100a of the corrugated tube after the alignment are necessary.

  The present invention has been made in view of the above problems, and at the position where the branch line branches off from the trunk of the wire harness sheathed with the corrugated tube, the corrugated tube does not require an intermediate opening and protects the branched position. It is an object of the present invention to provide a protective device for a wire harness branching portion that can be easily connected.

In order to solve the above problems, as a first invention, as a first invention, a cross-sectional arc-shaped horizontal axis surrounding a half circumference of a trunk of a wire harness, and a branch line protruding from the longitudinal center of the horizontal axis and branching from the trunk Including a T-shaped attachment material having a longitudinal axis of a circular arc section that surrounds the half circumference of
A pair of first and second guide portions that protrude in a laterally V shape from the center in the length direction toward the tip are provided on the outer surfaces of both side portions in the length direction of the horizontal shaft portion,
The slits provided in the corrugated tubes that are externally mounted on both sides of the trunk line sandwiching the branch line of the wire harness are expanded, and the split edges of the slits are respectively attached to the outer surfaces on both sides of the first and second guide portions to the tip. A protective device for a wire harness branching portion is provided, wherein the corrugated tube can be sheathed on the main line by moving the slit to open.

The protective material mounting material is pressed against the outer surface of the half of the branch portion of the wire harness, the slit of the corrugated tube is opened on one side of the trunk line sandwiching the branch line, and the split edges on both sides sandwiching the slit are the When the guide part is moved along the outer surfaces on both sides, the slit of the corrugated tube is gradually and forcibly widened to cover the trunk line, and the corrugated tube can be fitted on one side of the trunk line. That is, the protector functions as a corrugated tube passing jig, and the corrugated tube can be externally mounted on one side of the trunk line branching the branch line without providing a dedicated jig.
Similarly, the corrugated tube can be sheathed on the other side of the trunk line by opening the slit of the corrugated tube to be sheathed on the other side of the trunk line across the branch line and moving it along the second guide portion.

  When the corrugated tubes are sheathed on both sides of the trunk line sandwiching the branch lines, the ends of the corrugated tubes on both sides are overlapped on both sides of the horizontal shaft portion of the protective equipment and wound with adhesive tape to fix them. The trunk line can be continuously protected by the tube and the protector. And the branch line branched from this trunk line is exterior-protected by the vertical axis | shaft part of the said protector, and the front-end | tip of this vertical axis | shaft part is being fixed to the branch line with the adhesive tape. The branch line may be protected by wrapping an adhesive tape, or may be protected by wrapping a resin tube or a resin sheet.

The first and second guide portions of the protector of the present invention may be formed by a pair of ridges protruding in a V shape, or may be formed by a single base portion protruding in a V shape.
The outer surfaces on both sides of the first and second guide portions may be separated from each other toward the tip, and the slit of the corrugated tube may be gradually expanded.

A pair of the attachment members of the protector according to the present invention are provided so as to surround the entire circumference of the trunk line of the wire harness and the outer periphery of the branch line, and the pair of attachment materials are placed over the entire circumference of the branch portion of the trunk line and the branch line. Locking portions that can be locked to each other in the state are provided at the butt end edges.
The locking portion is provided with a lock claw and a lock frame that can be locked to the lock claw on both side edges of the longitudinal axis portion of the halved mounting member.
In addition, you may provide a recessed part and a convex part in the both-sides edge of a longitudinal axis part. When this uneven fitting is performed, it is necessary to wrap the adhesive tape and hold it in the fitted state.

  The said protector is provided with a pair of attachment material divided in half so that the perimeter of the branch part which the branch line branched from the trunk line of the wire harness may be enclosed. When the pair of attachment members made of the half members are locked to each other in a state of covering the half circumferences on both sides of the branch portion of the wire harness, the protector is externally held at the branch position of the wire harness. Therefore, it is not always necessary to perform the corrugated tube threading operation after the protective member mounting material is wound around the wire harness with the adhesive tape and fixed.

  However, in order to open the slit of the corrugated tube and put it on the wire harness, it is only necessary to have one attachment material pressed against the half circumference of the wire harness, and a pair of attachment materials is not essential, only one half member The material cost can be halved by using. When using one mounting material that presses against this half circumference, both ends of the horizontal axis of the mounting material are fixed by wrapping an adhesive tape around the trunk of the wire harness, and the tip of the vertical axis is bonded to the branch line. It is preferable that the tape is wound and fixed, and in this state, the corrugated tube is externally mounted on the wire harness using the guide portion of the mounting material.

Moreover, you may projectly provide the 3rd guide part in which an outer surface of both sides leaves | separates in the V-shape toward the front-end | tip of this vertical-axis part on the outer surface of the said vertical-axis part.
When the slit provided in the corrugated tube that is externally mounted on the branch line of the wire harness is expanded, and the divided edges of the slit are moved to the tip along the both outer surfaces of the third guide part, the corrugated tube Can be sheathed on the branch line. Therefore, the trunk line and the branch line on both sides of the T-shaped branch where one branch line branches from the trunk line can be covered with the corrugated tube.

The mounting material of the protector according to the present invention is formed in a cross shape by further projecting a downward vertical axis from the central lower end of the horizontal axis portion, and also in an outward V-shape toward the lower end on the outer surface of the downward vertical axis portion. You may project the 4th guide part from which an outer surface of both sides separates.
If the said protector is used, it can be easily armored with a corrugated tube on any of the wire harnesses that cross-branch.

  As a second aspect of the present invention, there is provided a protective structure for a wire harness branching portion in which the protective device and the corrugated tube are sheathed on a T-shaped branching portion.

When the protector for a wire harness branching portion of the present invention is attached to a branch portion such as a T-shape of the wire harness, a corrugated tube slit is opened and covered on the trunk of the wire harness sandwiching the branch portion, and both end edges of the slit are covered. The corrugated tube can be easily attached only by moving along the guide portion provided on the outer surface of the protector, and the corrugated tube can be connected to the protector without a gap.
And if the protector of this invention is used, the exclusive jig | tool for corrugate passage will become unnecessary. Furthermore, the corrugated tube does not require an intermediate round hole drilling operation, and the alignment of the round hole and the branch position of the wire harness is also unnecessary, so that workability can be improved.

It is a perspective view which shows 1st Embodiment of the protector of this invention. It is a perspective view which shows a pair of protector. The state which attached the said protector to the branch part of a wire harness is shown, (A) is a front view, (B) is the II-II sectional view taken on the line of (A). It is a perspective view which shows the process of letting a corrugated tube pass through using the said protector. It is a front view which shows the state which coat | covered the corrugated tube on the trunk line of the branch part of a wire harness using the said protector. It is a perspective view which shows the protector of 2nd Embodiment of this invention. It is a perspective view which shows the modification of the said protector. (A) (B) is a perspective view which shows the other modification of the said protector. (A) is a front view which shows the protector of 3rd Embodiment, (B) is a front view which shows the state which coat | covered the trunk line and branch line of the wire harness with the corrugated tube using this protector. (A) is a front view which shows the protector of 4th Embodiment, (B) is a front view which shows the state which coat | covered the trunk line and branch line of the cross branch of the wire harness with the corrugated tube using this protector. It is a front view which shows a prior art example. It is drawing which shows another prior art example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show a first embodiment.

  The protector 1 of the first embodiment is composed of one attachment material 2. As shown in FIG. 1, the mounting member 2 is provided on one side of a pair of halved members 2 </ b> A and 2 </ b> B that covers the entire circumference of the T-shaped branch portion where one branch line 52 branches from the trunk line 51 of the wire harness 50. Consists of. That is, the protector 1 of the first embodiment reduces the material cost by using one side 2A or 2B of the half member, and the protector of the second embodiment to be described later uses both the half members 2A and 2B. Used.

  The mounting material 2 of the protector 1 protrudes from the center in the length direction of the horizontal shaft portion 10 that surrounds the half circumference of the main wire 51 of the wire harness 50, and branches from the main wire 51. It has a substantially T-shape including a longitudinal axis portion 11 having a circular arc shape that surrounds a half circumference of the branch line 52.

A first guide portion 12 and a second guide portion 13 that function as a corrugated tube threading jig are integrally projected in a bilaterally symmetrical manner on the outer surfaces of both sides in the longitudinal direction L of the horizontal shaft portion 10. The first and second guide portions 12 and 13 project in a lateral V-shape from the center in the length direction toward both ends in the length direction. The first guide portion 12 includes a pair of ridges 12a and 12b. The ridges 12a and 12b are close to each other at the center and are separated from each other toward the tip.
The second guide portion 13 has a similar shape and is composed of a pair of ridges 13a and 13b. The ridges 13a and 13b are close to each other at the center and are separated from each other toward the tip.
Also, a plurality of ribs 18 and 18 are provided on both sides of the inner peripheral surface of the horizontal shaft portion 10 so as to be able to adhere to the wire group of the wire harness 50 without slipping.
Furthermore, a locking concave portion 14a and a locking convex portion 14b are provided on the left and right side edges on the distal end side of the vertical axis portion 11 projecting upward in the figure from the center in the length direction of the horizontal shaft portion 10.

As shown in FIG. 1 and FIG. 3 (B), the protector 1 made of one mounting member 2 made of one of the half members is pressed against the half circumference of one side portion of the T-shaped branch of the wire harness 50. Put on. At this time, the adhesive tape T-1 is wound around the electric wire group W constituting the wire harness 50 by rough winding and bound.
The mounting material 2 covers the horizontal shaft portion 10 over the trunk line 51, and the vertical axis portion 11 covers the branch line 52. In this state, both ends of the horizontal shaft portion 10 and the tip of the vertical axis portion 11 are respectively connected to the wire group of the wire harness. It is wound with adhesive tapes T-2, T-3, and T-4, and the attachment material 2 is positioned and held on the wire harness 50.

  Next, as shown in FIG. 4, the slit 20 s of the corrugated tube 20 with slits is expanded on the left and right trunk lines 51 -A sandwiching the branch line 52 of the wire harness 50, and the divided edges 20 e 1 on both sides of the slit 20 s are expanded. , 20e2 is moved to the tip along the outer surfaces of the ridges 12a and 12b on both sides of the first guide portion 12, the slit 20s is forcibly expanded. By expanding the slit 20s, the corrugated tube 20 can be covered with the main line 51, and the corrugated tube 20 can be externally fitted to the main line 51-A.

  Similarly, the slit of the corrugated tube 21 is opened on the other side 51-B of the trunk line 51 sandwiching the branch line 52 and is moved along the second guide portion 13 so that the corrugated tube 21 is sheathed on the trunk line 51-B. can do.

In this way, the corrugated tubes 20 and 21 are respectively sheathed on the trunk lines 51-A and 51-B, and the ends thereof are overlapped on both sides of the horizontal shaft portion 10 of the mounting material 2, and as shown in FIG. 5, T-6 is wound and the corrugated tubes 20 and 21 are fixed to the protector 1. Thereby, the branch part of the trunk line 51 is externally protected by the corrugated tubes 20 and 21 and the protector 1.
The branch line 52 may be bundled and protected by wrapping an adhesive tape, or may be packaged with a resin round tube.

FIG. 6 shows a second embodiment.
In the second embodiment, as shown in FIG. 2, a mounting member comprising a pair of halved members 2A and 2B covering the entire circumference of a T-shaped branch portion where one branch line 52 branches from the trunk line 51 of the wire harness 50 is provided. Used. One half member 2 </ b> A is the attachment member 2 described in the first embodiment, and includes a locking concave portion 14 a and a locking convex portion 14 b at the tip of the vertical axis portion 11. The other half member 2 </ b> B is similarly provided with a locking recess 14 a and a locking projection 14 b at the tip of the vertical axis portion 11.

  The half members 2A and 2B of the attachment member 2 are placed on both sides of the T-shaped branch portion of the wire harness 50. In this state, the engaging concave portion 14a on the leading end side where the vertical axis portions 11 and 11 are abutted is fitted to the engaging convex portion 14b and aligned. In this state, similarly to the first embodiment, the adhesive tapes T-2 to T-4 are wound, and the attachment member composed of the half members 2A and 2B is fixed to the wire harness 50.

  As described above, in the state where the entire circumference of the T-shaped branching portion of the wire harness 50 is surrounded, the first guide portion 12 of any one of the half members 2A and 2B of the mounting material 2 is used to perform the first implementation. Similarly to the form, the corrugated tube 20 is sheathed on the one side trunk line 51 -A, and the corrugated tube 21 is sheathed on the other side trunk line 51 -B using the second guide portion 13.

  In this 2nd Embodiment, since the perimeter of the branch position of the wire harness 50 is surrounded by the half members 2A and 2B of an attachment material, there exists an advantage which a protection function improves.

FIG. 7 shows a modification of the first and second guide portions 12 and 13 provided on the attachment member 2.
In the modified example, the first guide portion 12A and the second guide portion 13A are not formed from a pair of ridges, but are formed from one step portion protruding in a V shape. If the slit of the corrugated tube is expanded to 12s1 and 12s2 (13s1 and 13s2) on both sides of the one step portion and the edges of the corrugated tube are moved together, the slit is forcibly expanded to cover the wire harness with the corrugated tube. it can.

FIG. 8 shows a modification of the locking portions provided on the half members 2A and 2B.
A locking claw 14r is provided at the tip of one side edge of the longitudinal axis 11 of the half member 2A, 2B, while a locking frame 14k is provided at the tip of the other side edge. The side edges of the longitudinal portions 11 of the half members 2A and 2B are butted together so that the locking claw 14r can be inserted into the locking frame 14k and locked together. Thereby, the vertical axis parts 11 and 11 of the half members 2A and 2B can be locked and coupled with the branch line 52 in between, and as a result, the horizontal axis parts 10 and 10 can be positioned and held in abutting state, and the adhesive tape is wound around There is no need to fix the mounting material 2 to the wire harness.

9A and 9B show a third embodiment.
The protector 1-B of the third embodiment is used when the corrugated tube 22 is also externally attached to the branch line 52 branched from the trunk line 51 of the wire harness 50.
The protector 1 -B is provided with a third guide portion 15 on the outer surface of the longitudinal axis portion 11. The third guide portion 15 includes a pair of ridges 15a and 15b that expand in a V shape in a vertical direction from the horizontal axis connection side toward the tip. Since other shapes are the same as those of the first embodiment, description thereof is omitted.
When the slit 22s of the corrugated tube 22 is opened in the third guide portion 15 from below and the dividing edges on both sides of the slit 22s are raised along the outer surfaces of the ridges 15a and 15b, the slit 22s of the corrugated tube 22 is formed. It can be spread and covered with the corrugated tube 22 on the branch line 52.
Since the exterior method of the corrugated tubes 20 and 21 to be sheathed on the trunk line 51 in FIG. 9B is the same as that of the first embodiment, the description thereof is omitted.

10A and 10B show a fourth embodiment.
The protector 1-C of the fourth embodiment is attached to a cross branch in which the branch lines 52A and 52B branch from the trunk line 51 of the wire harness 50 in the orthogonal direction. The corrugated tubes 20 to 23 can be attached to the left and right sides 51-A and 51-B and the upper and lower branch lines 52A and 52B of the trunk line 51, respectively.

The protector 1-C is provided with a downward vertical axis portion 16 projecting downward from the center of the horizontal axis portion 10 of the mounting member of the third embodiment, and expands downward in a V shape on the outer surface of the downward vertical axis portion 16. A guide portion 17 is projected. The guide portion 17 includes a pair of ridges 17a and 17b. By opening the slit of the corrugated tube 23 and moving it along the outer surfaces of the ridges 17a and 17b, the corrugated tube 23 can be externally mounted on the branch line 52B.
Accordingly, the corrugated tubes 20 to 23 can be easily packaged on the left and right trunk lines and the upper and lower branch lines that cross-branch.

DESCRIPTION OF SYMBOLS 1 Protective tool 2 Attachment material 10 Horizontal axis part 11 Vertical axis part 12 1st guide part 13 2nd guide part 14a Locking recessed part 14b Locking convex part 20-23 Corrugated tube 20s Slit 50 Wire harness 51 Trunk line 52 Branch line T- 1 to T-4 adhesive tape

Claims (5)

A cross-section arc-shaped horizontal axis surrounding the half circumference of the trunk line of the wire harness, and a cross-section arc-shaped vertical axis section projecting from the center in the length direction of the horizontal axis section and surrounding the half circumference of the branch line branched from the trunk line With a T-shaped mounting material,
A pair of first and second guide portions that protrude in a laterally V shape from the center in the length direction toward the tip are provided on the outer surfaces of both side portions in the length direction of the horizontal shaft portion,
The slits provided in the corrugated tubes that are externally mounted on both sides of the trunk line sandwiching the branch line of the wire harness are expanded, and the split edges of the slits are respectively attached to the outer surfaces on both sides of the first and second guide portions to the tip. A protective device for a wire harness branching portion, wherein the corrugated tube can be sheathed on the main line by moving the slit to open.   A pair of the attachment materials are provided so as to surround the entire circumference of the trunk line of the wire harness and the outer circumference of the branch line, and the pair of attachment materials can be locked to each other in a state of covering the entire circumference of the branch portion of the trunk line and the branch line. The protective device of the wire harness branch part of Claim 1 which has provided the latching | locking part in the butt | matching edge.   3. The wire harness branching portion according to claim 1, wherein a third guide portion is provided on the outer surface of the vertical axis portion so that the outer surfaces of both sides are separated in a V shape toward the tip of the vertical axis portion. Protective gear.   The mounting material is formed in a cross shape by further projecting a downward vertical axis from the central lower end of the horizontal axis, and the outer surfaces of both sides are separated in a downward V shape toward the lower end of the outer surface of the downward vertical axis. The protector of the wire harness branch part of any one of Claims 1 thru | or 3 which protrudes 4 guide parts.   The protective structure of the wire harness branch part which coat | covers the protector and corrugated tube of any one of Claim 1 thru | or 4 to the branch part.

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