JPH0523722U - Wire harness branch structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a wire harness branching structure capable of surely protecting a wire harness at a branching part and easily performing branching work. A branch guide portion 50 for holding a branch corrugated tube 4 in which a branch harness 3 branched from a main harness 2 is inserted, and a flange portion 51 formed on the outer periphery of a proximal end portion of the branch guide portion 50. The branch protector 5 is integrally formed and has a notch 52 for passing the branch harness 3 from the upper edge of the flange 51 to the upper end of the branch guide 50. The branch protector 5 includes The axial cut 10 formed in the main corrugated tube 1 through which the harness 2 is inserted is pushed open to lock the flange portion 51 to the inner surface of the main corrugated tube 1 and the branch guide portion 50 to the main corrugated tube 1. The structure is such that it is attached to the main corrugated tube 1 in a state of being projected to the outside.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a branch structure of a wire harness used for electric wiring of an automobile or the like.

[0002]

[Prior Art]

 The wire harness of an automobile is branched so as to reach an electric device of each part on the way, and conventionally, a branching structure as shown in FIGS. 8 and 9 is known.

In this conventional branching structure, the main harness 100 is inserted into the main corrugated tubes 101, 101 that are divided into two at the branching portion, and the branch harness 200 branched from the main harness 100 is branched. The main harness 100 and the branch harness 200, which were inserted into the corrugated tube 201 and were exposed at the branch portion, were wrapped with an adhesive tape 300 and bundled.

A technique disclosed in Japanese Utility Model Laid-Open No. 63-111458 is known as a technique for winding and bundling a wire harness with an adhesive tape.

[0005]

[Problems to be solved by the device]

 However, as described above, the reason why the wire harness is wound with the adhesive tape is to bundle the wire harness until the end, and the protective effect of the wire harness is small.

Therefore, conventionally, in order not to damage the branch portion, it is necessary to lay out the branch portion at a position avoiding the protruding portion such as the panel edge, which causes a restriction on the wiring design of the wire harness. There was a problem that the wire harness had to be made longer than necessary to avoid the portion. In addition, the work of winding the adhesive tape is troublesome, and the work efficiency is poor.

The present invention has been made in view of the above problems, and provides a wire harness branching structure capable of surely protecting a wire harness at a branching part and easily performing branching work. It is an object.

[0008]

[Means for Solving the Problems]

 According to the present invention, the branch guide portion for holding the branch corrugated tube and the flange portion formed on the outer circumference of the proximal end portion of the branch guide portion are integrally formed, and the branch guide portion is formed from the upper edge of the flange portion. The above-mentioned object is achieved by using the branch protector in which the branch harness passing portion is formed from the upper end of the portion.

That is, in the wire harness branch structure of the present invention, a branch guide part for holding a branch corrugated tube in which a branch harness branched from a main harness is inserted, and a branch guide part formed on an outer periphery of a base end part of the branch guide part. In addition to being integrally formed with the formed flange portion, the branch protector is provided with a branch harness passage portion formed from the upper edge of the flange portion to the upper end of the branch guide portion. , Push the axial notch formed on the main corrugated tube through which the main harness has been inserted to lock the flange part to the inner surface of the main corrugated tube and the branch guide part to the outside of the main corrugated tube. The means is attached to the main corrugated tube in a protruding state.

[0010]

[Action]

 The bifurcation protector is attached to the main corrugated tube by utilizing an axial cut formed in the main corrugated tube. In this case, if the flange is fitted into the main corrugated tube from the axial cut, the flange is locked to the inner surface of the main corrugated tube with the axial cut pushed open, and the branch guide The part projects outside the main corrugated tube.

Then, the branch harness is pulled from the through portion into the branch guide portion and inserted into the branch corrugated tube, and the branch corrugated tube is held in the branch guide portion. In this state, the branch corrugated tube is integrally connected to the main corrugated tube via the branch protector, so that the support of the branch corrugated tube is stable and the branch harness inserted therein is also stable.

In addition, since the main corrugated tube is not divided at the branch portion, the main harness has the branch portion protected by the main corrugated tube, and the branch between the branch corrugated tube and the main corrugated tube is for branching. Since the branch guide portion of the protector is provided, the branch portion of the branch harness is protected by the branch guide portion, and the main harness and the branch harness are not exposed to the outside at the branch portion.

[0013]

【Example】

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

FIG. 1 shows a wire harness branching structure of a first embodiment, FIGS. 2 and 3 show a branch protector used in the wire harness branching structure, and FIG. 4 shows a mounting state of the branch protector. Shows.

In the wire harness branching structure of this embodiment, the branch harness 3 is branched from the middle of the main harness 2 inserted into the main corrugated tube 1, and the branch harness 3 is inserted into the branch corrugated tube 4 as well. The branch corrugated tube 4 is held by a branch protector 5.

The main corrugated tube 1 and the branch corrugated tube 4 are resin tubes each having an outer peripheral surface formed in a wavy shape, and axial cuts 10 and 40 are formed over the entire length thereof to insert a wire harness inside. In this case, the axial cuts 10 and 40 are opened and inserted from here.

As shown in FIGS. 2 and 3, the branch protector 5 is a resin molded product in which a branch guide portion 50 and a flange portion 51 are integrally formed. The branch guide portion 50 has the branch harness 3 inside. Is for holding the branch corrugated tube 4 inserted therethrough, and is formed in a gutter shape having a semicircular cross section with an open top surface.

The flange portion 51 is formed in a laterally elongated substantially rhombic shape having a lateral protrusion amount larger than a vertical protrusion amount on an outer periphery of a base end portion of the branch guide portion 50, and the branch guide portion is formed from a central portion of an upper edge thereof. A continuous cutout portion 52 is formed inside the 50. The cutout portion 52 and the upper opening 53 of the branch guide portion 50 serve as a through portion of the branch harness 3 from the upper edge of the flange portion 51 to the branch guide portion. It is formed to the upper end of the tip.

Further, in the embodiment, the groove portion 54 is formed on the outer periphery of the flange portion 51 with a width corresponding to the wall thickness of the main corrugated tube 1. The upper portion of the groove portion 54 is formed so that the central portion reaches the upper end of the branch guide portion 50, and the lower portion is formed such that the central portion reaches the lower end of the branch guide portion 50, and both end portions thereof are formed. Are formed to be continuous. Therefore, the flange portion 51 is formed with the inner flange 51a and the outer flange 51b with the groove portion 54 interposed therebetween.

Further, as shown in FIG. 4, the branch protector 5 pushes open the axial notch 10 formed in the main corrugated tube 1 to open the main corrugated tube 1 in the groove 54 of the flange 51. The inner flange 51a is locked to the inner surface of the main corrugated tube 1 by fitting the wall portion of the main corrugated tube 1, and the branch guide portion 50 is attached to the main corrugated tube 1 in a state of protruding to the outside of the main corrugated tube 1. It is being done.

Then, the branch corrugated tube 4 having the branch harness 3 inserted therein is held in the branch guide portion 50 of the branch protector 5, and at this time, the branch harness 3 serves as a through portion. It is drawn into the branch guide section 50 through the section 52 and the upper opening 53 of the branch guide section 50, and the adhesive tape 6 is wound to such an extent that the branch corrugated tube 4 is fixed to the branch guide section 50. There is.

Next, the operation of the embodiment will be described.

The branch protector 5 is attached to the main corrugated tube 1 by utilizing an axial cut 10 formed in the main corrugated tube 1. In this case, if the axial cut 10 is opened and the wall portion of the main corrugated tube 1 is fitted into the groove portion 54 of the flange portion 51, the inside of the flange portion 51 is opened with the axial cut 10 being pushed open. The flange 51a is locked to the inner surface of the main corrugated tube 1, and the branch guide portion 50 is projected to the outside of the main corrugated tube 1.

In this state, the branch corrugated tube 4 is integrally connected to the main corrugated tube 1 via the branch protector 5, so that the support of the branch corrugated tube 4 is stable, and in particular, in the present embodiment. Since the wall portion of the main corrugated tube 1 is fitted into the groove portion 54 of the flange portion 51, the stability is high.

Then, the branch harness 3 is drawn into the branch guide section 50 from the cutout section 52 serving as a through section and the upper surface opening section 53 of the branch guide section 50 and inserted into the branch corrugated tube 4, and this branch Since the corrugated tube 4 is held in the branch guide portion 50, the support of the branch corrugated tube 4 is stable, and the branch harness 3 inserted through this is also stable.

Further, since the main corrugated tube 1 is not divided at the branch portion, the main harness 2 is protected by the main corrugated tube 1 also at the branch portion, and between the branch corrugated tube 4 and the main corrugated tube 1. Since the branch guide portion 50 of the branch protector 5 is provided in the branch harness 3, the branch harness 3 is protected by the branch guide portion 50, and the main harness 2 and the branch harness 3 are protected. It is not exposed to the outside at the branch.

As described above, in this embodiment, since the branch protector 5 is used, the main harness 2 and the branch harness 3 can be reliably protected at the branch portion, and the branch portion work can be easily performed. Is obtained.

Next, FIGS. 5 to 7 show another embodiment of the branch protector.

The branch protector 7 is a resin molded product in which a branch guide portion 70 and a flange portion 71 are integrally formed. The branch guide portion 70 is a polymerized portion obtained by rolling a sheet material in a circular shape and overlapping both end portions thereof. 72 is formed in a cylindrical shape formed on the upper side.

In addition, a cut portion 73 is formed in the flange portion 71 from the center of the upper edge, and one upper edge (right upper edge) 71 a divided by the cut portion 73 is one cut edge 73 a. Through one edge of the branch guide 70 (upper edge) 72a, and the other upper edge (upper left edge) 71b of the other branch edge 73b of the branch guide. It is formed so as to be continuous with the other overlapping edge (lower edge) 72b of the portion 70, and the upper edge of the flange portion 71 is formed by this cut portion 73 and the overlapping portion 72 of the branch guide portion 70. To the upper side of the tip of the branch guide portion 70, the through portion of the branch harness 3 is formed.

A wire harness branching structure is constructed by using the branch protector 7. In this case, the axial notch 10 formed in the main corrugated tube 1 is formed as in the first embodiment. By pushing open and fitting the flange portion 71 into the main corrugated tube 1, the branch protector 7 has the flange portion 71 locked to the inner surface of the main corrugated tube 1 and the branch guide portion 70. 1 is attached to the main corrugated tube 1 in a state of being projected to the outside.

The branch corrugated tube 4 having the branch harness 3 inserted therein is held in the branch guide portion 70 of the branch protector 7. At this time, the branch harness 3 serves as a through portion. The adhesive tape is wound to such an extent that it is drawn into the branch guide portion 70 through the cut portion 73 and the overlapping portion 72 of the branch guide portion, and the branch corrugated tube 4 is fixed to the branch guide portion 70.

The operation of the wire harness branching structure constructed by using the branch protector 7 is the same as that of the first embodiment, and therefore its explanation is omitted.

Although the embodiment of the present invention has been described above with reference to the drawings, the specific configuration is not limited to this embodiment. For example, the flange portion of the branch protector is provided along the inner surface of the main corrugated tube. It may be curved with a curvature.

[0035]

[Effect of the device]

 As described above, in the wire harness branching structure of the present invention, the following effects can be obtained as a structure using the branching protector.

The main corrugated tube through which the main harness is inserted is not divided at the branch portion, and since the branch portion of the branch harness is protected by the branch guide portion, the main harness and the branch harness may be exposed to the outside. Without it, the main harness and branch harness can be reliably protected.

Since the branch protector can be attached only by being fitted into the main corrugated tube from the axial cut, the branch work can be easily performed.

Since the reliable protection can be performed as described above, the branch harness can be branched from the main harness at an arbitrary position, so that the branch portion is laid out at a position avoiding a protruding portion such as a panel edge. It frees you from the constraints and does not require the branch harness to be longer than necessary.

The branch protector can be used without being affected by the diameter of the main corrugated tube, and even when the main corrugated tube is curved in a curved shape.

[Brief description of drawings]

FIG. 1 is a perspective view showing a wire harness branching structure of a first embodiment.

FIG. 2 is a perspective view showing a branch protector used in the structure of the first embodiment.

FIG. 3 is a front view showing a branch protector of the first embodiment structure.

FIG. 4 is a cross-sectional view showing an attached state of the branch protector of the first embodiment structure.

FIG. 5 is a perspective view showing another embodiment of a branch protector having another embodiment structure.

FIG. 6 is a plan view showing a branch protector having a structure of another embodiment.

FIG. 7 is a front view showing a branch protector of another embodiment structure.

FIG. 8 is a perspective view showing a conventional wire harness branching structure.

FIG. 9 is a perspective view showing a conventional wire harness branching structure.

[Explanation of symbols]

 1 Main corrugated tube 10 Axial notch 2 Main harness 3 Branch harness 4 Branch corrugated tube 5 Branch protector 50 Branch guide part 51 Flange part 52 Cutout part (through part) 53 Top opening part (through part) 7 Branch protector 70 Branch guide part 71 Flange part 72 Overlap part (through part) 73 Cut part (through part)

Claims (1)

[Scope of utility model registration request] 1. A branch guide part for holding a branch corrugated tube in which a branch harness branched from a main harness is inserted, and a flange part formed on the outer periphery of a base end part of the branch guide part are integrally formed. In addition, the branch protector includes a branch protector in which a through part of the branch harness is formed from the upper edge of the flange part to the upper end part of the branch guide part. The axial cutout is pushed open, the flange is locked to the inner surface of the main corrugated tube, and the branch guide is attached to the main corrugated tube in a state of protruding to the outside of the main corrugated tube. A characteristic wire harness branch structure.