JP2012210043A - Protector for wiring harness branch part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protector in which a corrugated tube is easily attached to a wiring harness having a branch part.SOLUTION: A both-side sandwich part of T-shape equipped with a horizontal axis part which is to be a trunk line side of a wiring harness and a vertical axis part which is to be a branch line side are provided. One end edges of the horizontal axis part of the both-side sandwich part are connected together. The branch line and the trunk line of the T-shape branch part of the wiring harness are sandwiched by the both-side sandwich part. A guide part for a corrugated tube containing a protruding part or a recessed part is provided to the outside surface of at least the horizontal axis part of the both-side sandwich part. A slit provided to the corrugated tube that is fitted over the trunk line of the wiring harness is enlarged. A split edge of the slit is shifted along the guide part so that the corrugated tube is fitted over the truck line.

Description

  The present invention relates to a protector for a wire harness branching portion, and more particularly to a protector that protects 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, a round hole-shaped opening is provided at the branch position in the corrugated tube, and the branch line branched from the trunk line of the wire harness W / H is externally provided through the opening. Pull out.

  At the branch position of the wire harness, an external interference material such as a metal burr, edge or spot hitting point is located at a position where the branch line is drawn from the opening of the corrugated tube, which may damage the branch line. Therefore, as shown in FIG. 8, the present applicant disclosed in Japanese Patent Application Laid-Open No. 2007-288972 from the T-shaped tube portion at a 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. 8 to the branch position of the wire harness, first, an opening 100a is provided in advance at the branch position of the corrugated tube 100 to perform an intermediate hole punching process. Although it is necessary, 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 protector for a wire harness branch that can be easily connected.

In order to solve the above-mentioned problems, the present invention has a T-shaped both-side holding portion having a horizontal axis portion on the trunk line side and a vertical axis portion on the branch line side of the wire harness, One end edges of the horizontal axis part are connected to each other, and the trunk line and the branch line of the T-shaped branch part of the wire harness are sandwiched between the both side clamping parts,
A guide part for a corrugated tube comprising a convex part or a concave part is provided on at least the outer surface of the lateral axis part of the both-side clamping part, the slit provided in the corrugated tube that is externally mounted on the trunk line of the wire harness is expanded, and the split edge of the slit The wire harness branching protector is provided in which the corrugated tube can be externally mounted on the main line by moving the guide along the guide part.

The both-side sandwiching portions each have a circular arc shape in cross-section, abutting the other end edges of the horizontal axis portions of the both-side sandwiching portions, and abutting the end edges of the vertical axis portions to form a cross-sectional cylindrical shape, and Connect one end edges of the horizontal shaft part of both side clamping parts via a thin hinge part, and open and close the thin hinge part to match the main wire outer diameter of the wire harness,
In a state where the T-shaped branch portion of the wire harness is sandwiched between the both-side sandwiching portions, an adhesive tape is wound around and secured to both ends in the lengthwise direction of the horizontal axis portion and the trunk line, and the tip end of the vertical axis portion and the branch line are attached. An adhesive tape is wound around and fixed.

  In this way, for the protector fixed to the outer surface of the branch portion of the wire harness, the slit of the corrugated tube is opened while the slit of the corrugated tube that is sheathed on the trunk line is opened and covered on the outer surfaces of the both-side holding portions of the protector. When the edge is moved along with the guide portion provided on the outer surface of the both-side clamping portion of the protector, the corrugated tube can be fitted onto the trunk of the wire harness after passing through the outer surface of the protector. That is, the protector functions as a corrugated tube passage jig, and the corrugated tube can be externally mounted on a trunk line having a branch portion without providing a dedicated jig, and the branch portion itself is also a protector. Can be protected.

The guide portion provided symmetrically on the outer surface of the both-side clamping portion includes an arc-shaped right guide rib extending from the right side of the front end side of the vertical axis portion to the right side portion of the horizontal axis portion, and the front end side of the vertical axis portion Consisting of an arc-shaped left guide rib extending from the left side of the left side to the left side of the horizontal axis,
A pair of left and right corrugated tubes that are externally fitted to both side portions of the trunk line sandwiching the branch portion of the wire harness are inserted along the right and left guide ribs of the both side sandwiching portions, respectively.

The said protector shall be used when it coat | covers with the corrugated tube which made the both sides of the trunk line which pinches | interposes the branch part of a wire harness separately.
These separate corrugated tubes are attached by moving from the front end of the guide rib on the vertical axis side to the side of the horizontal axis along the edges of both ends of the slit and moving so as to fit over the trunk line. Thereby, both sides of the trunk line can be easily passed through the corrugated tube. And the end part of the length direction of a corrugated tube can be continued without making a clearance gap as the state which accumulated the end part of the protector.

Alternatively, the guide portions provided symmetrically on the outer surfaces of the both-side sandwiching portions are each composed of a single guide rib that is provided so as to be inclined in an arc shape from one end side of the horizontal shaft portion toward the vertical portion of the intermediate position. ,
Open a slit of one continuous corrugated tube that continuously fits on both sides of the trunk line across the branch portion of the wire harness, and covers it from below the trunk line, and moves both ends of the slit along the guide rib. The slit is placed so as to be positioned above the trunk line, and the slit is positioned so as to surround the branch position of the branch line.

  In the protector, one corrugated tube is continuously fitted on a trunk line sandwiching the branch portion of the wire harness, and the corrugated tube is not provided with an intermediate opening for drawing a branch line. The corrugated tube can pass the trunk line through the corrugated tube simply by opening the slit and covering both ends of the slit on the guide rib of the protector. And the end part of the length direction of a corrugated tube can be continued without making a clearance gap as the state which accumulated the end part of the protector.

As described above, the protector according to the present invention can easily attach the corrugated tube to the trunk line of the wire harness along the guide portion provided on the outer surface thereof, and can keep the protector continuous with the corrugated tube. In addition, it is good also as a guide recessed part instead of the said guide rib consisting of a convex part.
In addition, since the vertical axis portion is fitted around the branch line branched from the trunk line, it is possible to prevent the branch line from being damaged by the external interference material at the branch position.
The branch line drawn out from the longitudinal axis of the protector may be wrapped around with an adhesive tape or may be passed through a resin round tube.

  Further, an arcuate guide rib extending from the branch side of the lateral shaft portion toward the tip is provided on the vertical axis portion of the both-side clamping portion, and a slit of the corrugated tube that is fitted around the branch line is opened. It is possible to move both end edges of the corrugated tube along the guide rib so that the corrugated tube can be sheathed on the branch line. Also in this case, the end of the corrugated tube can be overlapped with the end of the protector, and the corrugated tube can be continued without opening a gap on the branch line side.

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

As 3rd invention, the said protector is covered on the branch part of a wire harness, and tape winding fixing is carried out,
Next, open the slit of the corrugated tube with a slit to be sheathed on the wire harness, and cover the outer surface of the protector,
Move the split edge of the slit along the guide portion provided on the outer surface of the protector, and externally fit the corrugated tube to the trunk of the wire harness,
A method for protecting a wire harness branching portion is provided, wherein the end portion of the corrugated tube is overlapped with an end portion of the protector in the length direction.

When the protector for the wire harness branching portion of the present invention is attached to the T-shaped branching portion of the wire harness, the corrugated tube is opened by covering the trunk of the wire harness sandwiching the branching portion, and both end edges of the slit are covered with the protector. The corrugated tube can be easily attached only by being moved along the guide portion provided on the outer surface, 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.

The protector of 1st Embodiment of this invention is shown, (A) is a perspective view, (B) is a perspective view which shows the state which joined the both-sides clamping part, (C) is a front view. It is a front view which shows the state which coat | covers the branch part of a wire harness with the said protector and a corrugated tube. (A)-(D) are drawings which show the process of attaching the said protector and a corrugated tube to a wire harness branch part. It is a front view of 2nd Embodiment. It is a perspective view of 3rd Embodiment. (A) (B) is drawing which shows the attachment method of the corrugated tube to the protector of 3rd Embodiment. It is a front view of 4th Embodiment. It is drawing which shows a prior art example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show a first embodiment.

  The protector 1 according to the first embodiment is formed by an injection-molded product having a substantially T-shape and connecting the lateral shaft portions 2 a and 3 a of the both-side clamping portions 2 and 3 by a thin hinge portion 4. As shown in FIG. 2, the protector 1 holds the trunk line 52 of the T-shaped branch part 51 of the wire harness 50 routed to the automobile, and the vertical axis protrudes from the center of the horizontal axis parts 2a and 3a on the separation side. It is made into the shape which pinches the branch line 53 branched from the trunk line 52 in the part 2b, 3b.

  The first corrugated tube 60 and the second corrugated tube 61 are respectively covered on the left and right side portions 52a and 52b of the trunk line 52 sandwiching the branch portion 51 of the wire harness 50, and the opposing lengths of the first and second corrugated tubes 60 and 61 are covered. The direction tips 60 a and 61 a are overlapped on the outer periphery of the end of the horizontal shaft portions 2 a and 3 a of the protector 1 and are wound and fixed with adhesive tapes 70 and 71.

  As shown in FIG. 1, the both-side clamping parts 2 and 3 of the protector 1 are made symmetrical with the thin hinge part 4 as the center line. As shown in FIG. 1, the both-side sandwiching portions 2 and 3 have a circular arc cross section, and join the upper end edges 2a-1 and 3a-1 of the horizontal axis portions 2a and 3a of the both-side sandwiching portions 2 and 3 in the figure. When the left and right end edges 2b-1 and 3b-1 in the drawing of the portions 2b and 3b are joined, an inverted T-shaped cylindrical shape is formed. As a result, the trunk line 52 of the wire harness 50 having a substantially circular cross section is surrounded by the horizontal axis portions 2a and 3a, and the first and second corrugated tubes 60 and 61 are arranged on both sides of the outer peripheral surface that is continuous with the horizontal axis portions 2a and 3a. It is supposed to fit outside.

Guide ribs 11, 12, 13, and 14 that function as a corrugated tube passing jig are integrally provided on the outer surfaces of the both-side holding portions 2 and 3 of the protector 1.
In the drawing, the two guide ribs 11 and 12 are provided to project symmetrically on the outer surface of one sandwiching portion 2, and the two guide ribs 13 and 14 are disposed to project symmetrically on the outer surface of the other sandwiching portion 3. The left guide ribs 11 and 13 located on the left side are symmetrical with each other, and the right guide ribs 12 and 14 located on the right side in the figure are projected symmetrically.

The left guide rib 11 (13) has an arc shape extending from the left side of the front end side of the vertical axis 2b (3b) to the left side of the horizontal axis 2a (3a). The tip of the left guide rib 11 (13) on the side of the horizontal shaft portion 2a (3a) is positioned on the lower end side in the figure adjacent to the thin hinge 4 at the left end of the horizontal shaft portion 2a (3a).
The right guide rib 12 (14) has an arc shape extending from the right side of the front end side of the vertical axis 2b (3b) to the right side of the horizontal axis 2a (3a). And, similarly to the left guide rib 11 (13), the tip is positioned on the lower end side in the figure adjacent to the thin hinge 4 at the right tip of the horizontal shaft portion 2a (3a).

  Next, a process of attaching the first and second corrugated tubes 60 and 61 by attaching the protector 1 to the branch portion 51 of the wire harness 50 will be described.

As shown in FIG. 3 (A), the both-side clamping parts 2 and 3 of the protector 1 are covered from the trunk line 52 side of the branch part 51 of the wire harness with the thin hinge part 4 open, and the trunk line 52 of the protector 1 is covered. It is sandwiched so as to be surrounded by the horizontal shaft portions 2a and 3a. At that time, the horizontal shaft portions 2 a and 3 a can be brought into close contact with the outer peripheral surface of the trunk line 52 by adjusting the opening / closing angle with the thin hinge portion 4. Further, the branch line 53 is sandwiched between the vertical axis portions 2b and 3b.
Thereafter, as shown in FIG. 3 (B), adhesive tapes 75 and 76 are wound around and secured to the trunk line 52 at both ends in the longitudinal direction of the horizontal shaft portions 2a and 3a, respectively, and the tips and branches of the vertical shaft portions 2b and 3b are fixed. The adhesive tape 77 is wound around and fixed to the wire 53, and the protector 1 is fixed to the branch portion 51 of the wire harness.

  Next, as shown in FIG. 3C, in order to cover the first corrugated tube 60 over the left trunk line 52a, the slit 60s of the first corrugated tube 60 is opened and covered over the left side portion of the branch line 53. To do. In this state, the one split edge 60a-1 of the slit 60s is placed on the front end 11a of the guide rib 11 of the one sandwiching portion 2, and the other split edge 60a-2 of the slit 60s is placed on the other sandwiching portion 3. The guide rib 13 is placed on the front end 13a on the vertical axis side. In this way, with both end edges of the slit 60s placed on the guide ribs 11 and 13, the first corrugated tube 60 along the guide ribs 11 and 13 toward the horizontal shaft portions 2a and 3a in the insertion direction indicated by the arrows in the figure. I will move. By this operation, the insertion-side tip 60e of the first corrugated tube 60 moves so as to be fitted on the left main line 52a from the protector 1, and the first corrugated tube 60 can be smoothly passed through the left main line 52a. When the other end 60f of the first corrugated tube 60 reaches the left end of the horizontal shaft portions 2a and 3a of the protector 1, the insertion operation of the first corrugated tube 60 is stopped, and the adhesive tape 70 is attached to the first corrugated tube 60 and the protector. 1 is wound around the overlapped end portion and fixed.

  Next, the second corrugated tube 61 is fitted on the right trunk line 52b along the guide ribs 12 and 14 by the same operation as the method for attaching the first corrugated tube 60, and thereafter, as shown in FIG. The adhesive tape 71 is wound around and fixed to the overlapped end portion of the second corrugated tube 61 and the protector 1.

  The branch lines 53 drawn from the tips of the longitudinal axis portions 2b and 3b of the protector 1 are converged and protected by bundling with an adhesive tape, attaching a resin round tube or the like according to the design specifications. Since the root portion where the branch line 53 branches from the trunk line 52 is covered with the longitudinal axis portions 2b and 3b of the protector 1, it is possible to prevent the external interference material from interfering and being damaged. In addition, you may lengthen the length of the vertical-axis parts 2b and 3b from a viewpoint of branch line protection.

As described above, when the corrugated tube is attached to the main line of the wire harness 50, it is not necessary to provide an intermediate opening in the corrugated tube at the branch portion 51, and it is only necessary to divide the corrugated tube at the branch portion 51. Therefore, an intermediate hole drilling operation for the corrugated tube is not required, and an operation for aligning the branch portion with the intermediate opening is not required. Furthermore, since the guide rib for the corrugated tube insertion guide protrudes from the outer surface of the protector 1, it is not necessary to provide a corrugated tube passing jig separately.
Thus, the conventional problem can be solved only by attaching the protector 1 to the branch portion of the wire harness.

FIG. 4 shows a protector 1-A according to the second embodiment.
The protector 1-A according to the second embodiment is configured such that the third corrugated tube 63 is externally mounted on the branch line 53, and the first and second corrugated tubes 60 and 61 on the main line 52 side with the branch part 51 interposed therebetween. 53 is provided with three third corrugated tubes 63. Arc-shaped guide ribs 15 and 16 extending from the branching side of the horizontal shaft portions 2a and 3a toward the tip of the vertical shaft portion are provided on the vertical shaft portions 2b and 3b of the both-side holding portions 2 and 3 of the protector 1-A. ing.
Since other configurations are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

  In the protector 1-A, the slit 63s of the third corrugated tube 63 that fits around the branch line 53 is opened, and the left edge of the branch line 53 is covered with the left edge of the branch line 53 in the figure, and one split edge 63e of the slit 63s is placed on the guide rib 15. The lower edge 15 a of the guide rib 16 is brought into contact with the lower edge 15 a of the guide rib 16 and the lower edge 16 a of the guide rib 16 is brought into contact therewith. In this state, the third corrugated tube 63 is placed on the branch line 53 along the guide ribs 15 and 16 in the insertion direction indicated by the arrow in the drawing. When the distal end upper ends 15b and 16b of the guide ribs 15 and 16 are reached, the third corrugated tube 63 is in a state of covering the longitudinal axis portions 2b and 3b of the both-side clamping portions 2 and 3, and the third corrugated tube 63 is operated for the required length. The third corrugated tube 63 can be externally fitted to the branch line 53 by performing the above.

  The first and second corrugated tubes 60 and 61 that are fitted around the left and right sides 52a and 52b of the trunk line 52 are fitted along the guide ribs 11 and 13 and 12 and 14 as in the first embodiment. The first and second corrugated tubes 60 and 61 are attached to the trunk line 52 and then the third corrugated tube 63 is attached. After the third corrugated tube 63 is attached to the branch line 53, the first and second corrugated tubes 52 are attached. The tubes 60 and 61 may be attached to the main line 52.

5 and 6 show a protector 1-B of the third embodiment.
The protector 1-B does not divide the corrugated tube exterior to the main line 52 at the branching portion 51, but forms a continuous corrugated tube 65 with one slit, and the continuous corrugated tube 65 has an intermediate portion of the conventional example shown in FIG. The opening 100a is not provided.

The protector 1-B is symmetrically provided on the outer surfaces of the both-side clamping parts 2 and 3 from the one end (the left end in the figure) side of the horizontal axis parts 2a and 3a toward the vertical axis parts 2b and 3b at the intermediate position. Each of the guide ribs 17 and 18 is inclined upward in an arc shape. That is, in the first embodiment, the left and right guide ribs 2 and 3 are provided on the both-side clamping parts 2 and 3, respectively, but in the third embodiment, one guide rib is provided from the left side part to the intermediate part.
One end 17a, 18a of the guide ribs 17, 18 is positioned below the left end of the horizontal shaft portions 2a, 3a, and the other end 17b, 18b is the horizontal shaft portion 2a at a position corresponding to the right end of the vertical shaft portions 2b, 3b. 3a is set at an intermediate height position.

  The protector 1-B is attached to the branch part 51 of the wire harness 50 in the same manner as the protector 1 of the first embodiment, and the adhesive tape 75 is attached to both ends of the horizontal axis parts 2a and 3a and the vertical axis parts 2b and 3b. 76 and 77 are wound and fixed.

  The slit 65s of the one continuous corrugated tube 65 is opened, and the continuous corrugated tube 65 is put on the lower portion of the left main line 52a of the main line 52 as shown in FIG. Both end edges 65e and 65f of the slit 65s positioned at the upper end of the continuous corrugated tube 65 are placed on the upper surfaces of the ends 17a and 18a of the guide ribs 17 and 18, and then moved to the other ends 17b and 18b of the guide ribs 17 and 18. I will let you. With this movement, the continuous corrugated tube 65 covers the main line 52 from below, and both end edges 65e and 65f of the upper slit 65s move to the right side 52b of the main line 52 along both sides of the branch line 53, and the right main line. Edges 65e and 65f of the slit are joined at the upper end of 52b.

  Thus, even after the continuous corrugated tube 65 inserted along the guide ribs 17 and 18 from the left trunk line 52a reaches the state where the right trunk line 52b is fitted, the continuous corrugated tube 65 continues to be inserted and the right trunk line 52b is inserted. Insert the required length to the side. Thereafter, the continuous corrugated tube 65 is moved to the left trunk line 52a side, and the continuous corrugated tube 65 is continuously covered on the left trunk line 52a and the right trunk line 52b sandwiching the branch portion 51. At an intermediate position of the continuous corrugated tube 65, the slit 65s positioned at the upper end is opened so as to surround the branch line 53, and the branch line 53 is projected from the slit 65s.

  The branch line 53 may be bundled and protected by winding an adhesive tape in the same manner as in the first embodiment, or may be packaged with a resin round tube.

  Thus, in 3rd Embodiment, it is not necessary to divide the corrugated tube exterior to the trunk line 52 by the branch part 51, and it may be continued, and it is not necessary to provide the intermediate opening for branch-line extraction.

FIG. 7 shows a fourth embodiment.
The protector 1-C of the fourth embodiment has a shape in which the guide ribs 15 and 16 are provided on the branch line side of the protector of the second embodiment in the protector of the third embodiment, and the third corrugated tube 63 is attached to the branch line 53 ing.
Portions similar to those in the first to third embodiments are denoted by the same reference numerals and description thereof is omitted.

In the said 1st-4th embodiment, although the convex guide ribs 11-18 are provided in the outer surface of a protector, it is good also as a guide groove which consists of a recessed part instead of a convex part.
Moreover, if the both side clamping parts 2 and 3 are made flexible, the lower end can be made continuous with the arc part so that it can follow the outer diameter of the wire harness trunk line, so that the thin hinge part at the lower end is omitted. May be.

DESCRIPTION OF SYMBOLS 1 Protector 2, 3 Both-side clamping part 2a, 3a Horizontal axis part 2b, 3b Vertical axis part 11-18 Guide rib 60 1st corrugated tube 61 2nd corrugated tube 63 3rd corrugated tube 65 Continuous corrugated tube 60s, 63s, 65s Slit

Claims (7)

The wire harness has a T-shaped both-side sandwiching portion provided with a horizontal axis portion on the trunk line side and a vertical axis portion on the branch line side, and connects one end edges of the horizontal shaft portions of the both-side sandwiching portions; The trunk line and the branch line of the T-shaped branch part of the wire harness are sandwiched between the both side clamping parts,
A guide part for a corrugated tube comprising a convex part or a concave part is provided on at least the outer surface of the lateral axis part of the both-side clamping part, the slit provided in the corrugated tube that is externally mounted on the trunk line of the wire harness is expanded, and the split edge of the slit A wire harness branch protector characterized in that the corrugated tube can be externally attached to the main line by moving the guide along the guide portion. The both-side sandwiching portions each have a circular arc shape in cross-section, abutting the other end edges of the horizontal axis portions of the both-side sandwiching portions, and abutting the end edges of the vertical axis portions to form a cross-sectional cylindrical shape, and Connect one end edges of the horizontal shaft part of both side clamping parts via a thin hinge part, and open and close the thin hinge part to match the main wire outer diameter of the wire harness,
In a state where the T-shaped branch portion of the wire harness is sandwiched between the both-side sandwiching portions, an adhesive tape is wound around and secured to both ends in the lengthwise direction of the horizontal axis portion and the trunk line, and the tip end of the vertical axis portion and the branch line are attached. The protector for a wire harness branch part according to claim 1, wherein the adhesive tape is wound and fixed. The guide portion provided symmetrically on the outer surface of the both-side clamping portion includes an arc-shaped right guide rib extending from the right side of the front end side of the vertical axis portion to the right side portion of the horizontal axis portion, and the front end side of the vertical axis portion Consisting of an arc-shaped left guide rib extending from the left side of the left side to the left side of the horizontal axis,
The pair of left and right corrugated tubes that are respectively fitted on both sides of the trunk line sandwiching the branch portion of the wire harness are inserted along the right guide rib and the left guide rib of the both sides sandwiching portion, respectively. Item 3. A protector for a wire harness branching section according to Item 2.   The guide portions provided symmetrically on the outer surfaces of the both-side clamping portions are each composed of a single guide rib that is provided so as to be inclined in an arc shape from one end side of the horizontal shaft portion toward the longitudinal direction of the intermediate position, Open the slit of one continuous corrugated tube that continuously fits on both sides of the trunk line across the branch part of the wire harness, cover it from below the trunk line, and move both ends of the slit along the guide rib to move the trunk line The protector for a wire harness branching part according to claim 1 or 2, wherein the slit is positioned so that the slit is positioned above and the slit is positioned so as to surround the branching position of the branch line.   An arc-shaped guide rib extending from the branching side to the lateral shaft portion toward the tip is provided on the longitudinal axis portion of the both-side clamping portion, and a slit of the corrugated tube that is fitted around the branch line is opened. The protector for a wire harness branch part according to any one of claims 1 to 4, wherein an edge is moved along the guide rib so that a corrugated tube can be sheathed on the branch line.   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 5 to the T-shaped branch part. A tape winding and fixing the protector according to any one of claims 1 to 5 on a branch portion of a wire harness,
Next, open the slit of the corrugated tube with a slit to be sheathed on the wire harness, and cover the outer surface of the protector,
Move the split edge of the slit along the guide portion provided on the outer surface of the protector, and externally fit the corrugated tube to the trunk of the wire harness,
A method of protecting a wire harness branching portion, wherein an end portion of the corrugated tube is overlapped with an end portion in a length direction of the protector.

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