JPH0993752A - Protector for wire harness - Google Patents

Abstract

(57) An object of the present invention is to provide a protector for a wire harness in which a branch portion is hard to bend and which can reliably fix the branch electric wire to the branch portion by tape winding even if the number of branch electric wires is small. SOLUTION: In a protector 21 for a wire harness in which a protector main body 22 is provided with a branch portion 23 for winding and fixing a branch wire 3 of a wire harness along a tape, the branch portions 23 and 43 are connected to the branch wire 23. A main wall portion 31 extending along the extension direction and having an L-shaped portion or a U-shaped portion in at least a part of its cross-sectional shape, and the main wall portion 31 arranged in a direction orthogonal to the extension direction of the branch electric wire 3. Rib 3 which is integrally formed inside the L-shaped or U-shaped cross-section of FIG.
2a, 32b, 32c.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protector for converging and fixing a wire harness, and more particularly to a protector having a branch portion protruding from a protector body.

[0002]

2. Description of the Related Art Conventionally, as this type of protector, the one described in Japanese Utility Model Laid-Open No. 2-26321 is known.

3 and 4 show a protector similar to that described in the publication.

The protectors 1 and 11 shown in these figures are
The protector main bodies 2 and 12 for accommodating the trunk portion of the wire harness and the branch portions 4 and 14 for accommodating the branch electric wires 3 branched from the trunk portion are provided, and the branch electric wires 3 are arranged along the branch portions 4 and 14. After that, the branch portions 4 and 14 are tape-wound and fixed together. In the figure, 5 indicates a tape.

The branch portion 4 of the protector 1 shown in FIG. 3 has an L-shaped cross section and projects from the protector body 2.
A tape is wound with the branch electric wire 3 placed on the bottom plate 4a. The branch portion 14 of the protector 11 shown in FIG. 4 has a simple flat plate shape and protrudes from the protector body 12, and the branch wire 3 is placed on the upper surface of the protector body 12 for tape winding.

[0006]

By the way, in the case where the protector 1 shown in FIG. 3 is provided with the branch portion 4 having an L-shaped cross section, the strength of the branch portion 4 itself can be increased, but the branch wire 3 When the number of wires is one or two as shown in the drawing, the branch electric wire 3 cannot be reliably fixed with the tape 5 in some cases.

Further, in the case where the flat branch portion 4 is provided like the protector shown in FIG. 4, even if the number of the branch electric wires 3 is as small as one or two, the branch electric wires 3 are fixed with the tape 5. However, there is a problem that the branching portion 4 is easily bent due to insufficient strength.

In view of the above circumstances, the present invention provides a protector for a wire harness, in which the branch portion is difficult to bend and the branch wire can be reliably fixed to the branch portion by tape winding even if the number of branch wires is small. The purpose is to do.

[0009]

According to a first aspect of the present invention, in a protector for a wire harness, a protector main body is provided with a branch part for winding and fixing a branch wire of a wire harness along a tape. A main wall portion extending along the extension direction of the branch electric wire and having an L-shaped portion or a U-shaped portion in at least a part of its cross-sectional shape; and the main wall arranged in a direction orthogonal to the extension direction of the branch electric wire. It is characterized in that it is formed integrally with the inside of an L-shaped or U-shaped section of the section and has an upper end as a mounting portion for the branch electric wire.

In this protector, an L-shaped portion or a U-shaped portion is present in a part of the cross-sectional shape of the main wall portion, so that the main wall portion itself is hard to bend, and in particular, the rib further enhances the strength. Moreover, since the branch wire is placed on the upper end of the rib and is not hidden in the inner corner of the main wall portion, even if the number of branch wires is as small as one or two, it can be reliably wound with tape. Branch wires can be pressed and fixed to the ribs.

The invention according to claim 2 is the protector for a wire harness according to claim 1, wherein the main wall portion has a cross section L.
It is characterized in that it is constituted by a letter-shaped wall, and a plurality of the ribs are arranged at intervals in the extension direction of the branch electric wire.

In this protector, since the main wall portion has an L-shaped cross-section, the main wall portion itself is unlikely to bend. In particular, the ribs inside the main wall portion further increase the strength. Moreover, since a plurality of ribs are provided at intervals and the branch electric wire is placed on these ribs, the support of the branch electric wire is stable.

A third aspect of the present invention is the wire harness protector according to the first aspect, wherein the main wall portion has a cross section U.
It is characterized in that it is constituted by a letter-shaped wall, and a plurality of the ribs are arranged at intervals in the extension direction of the branch electric wire.

In this protector, since the main wall portion has a U-shaped cross section, the main wall portion itself is unlikely to bend, and in particular, the ribs inside the main wall portion further increase the strength. Moreover, since a plurality of ribs are provided at intervals and the branch electric wire is placed on these ribs, the support of the branch electric wire is stable. Further, since the bottom surface of the branch portion is rounded due to the U-shaped cross section, the sticking at the time of tape winding is improved.

The invention according to claim 4 is the protector for a wire harness according to claim 2 or 3, wherein the upper end of the rib is lower between the upper end of the rib and the upper end of the main wall portion. A step is provided, and the step is set to be smaller than the diameter of the branch electric wire.

In this protector, when the branch electric wire is placed on the upper end of the rib, the step difference between the main wall portion and the rib prevents the branch electric wire from falling off. Further, since the step is smaller than the diameter of the branch electric wire, the adhesive surface of the tape can be surely attached to the branch electric wire when the tape is wound.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

1A and 1B show the structure of a protector according to a first embodiment of the present invention. FIG. 1A is an external perspective view, and FIG.

The protector 21 has a protector body 22 and a branch portion 23 which are integrally molded of hard resin.
The protector main body 22 has a planar shape bent into an L shape, and the pair of side walls 2 formed along the shape.
5, 25 and the bottom wall 27 form a gutter shape.

The branch portion 23 is provided on the side wall 25 on the outer peripheral side of the L-shaped bent portion 29 of the protector main body 22. Here, among the side walls 25 on the outer peripheral side that are bent in an L shape, the side wall corresponding to one side of the L shape is represented by reference numeral 25a, and the side wall corresponding to the other side is represented by reference numeral 25b, and the branch portion 23 is , Outside the one side wall 25a, the side wall 25a
Is provided so as to project in a direction orthogonal to the other side wall 2
It extends in the extension direction of 5b.

The branch portion 23 has the one side wall 25a.
A main wall portion 31 extending in a direction orthogonal to the branch electric wire 3, that is, a plurality of rectangular plate-shaped ribs 32a, 32b, 32 having plate surfaces along a direction orthogonal to the main wall portion 31.
It consists of c and. The main wall portion 31 has an L-shaped cross section including a bottom wall 31a and a side wall 31b, and has ribs 32a, 32b, 32c.
Is disposed inside the main wall portion 31 and is integrated with the bottom wall 31a and the side wall 31b of the main wall portion 31.

The bottom wall 31a of the main wall portion 31 is formed continuously on the extension of the bottom wall 27 of the protector body 22, and the side wall 31b of the main wall portion 31 extends from the other side wall 25b of the protector body 22. It is formed continuously on top. However, the upper end of the side wall 31b of the main wall portion 31 is set at a position slightly lower than the side wall 25 on the protector body 22 side by forming a notch 34 for winding the tape around the branch portion 23.

The ribs 32a, 32b, 32c are provided on the main wall portion 3
The ribs 32a are arranged in parallel with each other in the extension direction of 1 and are located at the end of the protector body 22 side.
Is formed as a part of one side wall 25 a of the protector body 22. Also, the rib 32c located on the tip side
Are formed flush with the tip surface of the main wall portion 31.

The heights of the upper ends of the ribs 32a, 32b, 32c are one step lower than the height of the upper ends of the side walls 25 of the protector main body 22, and are set to the same height. Between the upper end of the rib 32a and the upper end of the side wall 25 of the protector main body 22, there is provided a step H1 having a size larger than the diameter of the branch electric wire 3 so that the branch electric wire 3 can be pulled out. That is, the rib 3 at the end
2a is formed by notching the upper end of one side wall 25a of the protector main body 22 in a rectangular shape by a predetermined height.

The upper end of the main wall portion 31 and the ribs 32a, 3
Ribs 32a, 32b, between the upper ends of 2b, 32c,
A step H2 smaller than the diameter of the branch electric wire 3 is provided such that the upper end of 32c becomes lower. As a result, the upper ends of the ribs 32a, 32b, 32c serve as the mounting portions 35 for the branch electric wires 3.

When the wire harness W is converged and fixed to the protector 21 having such a structure, the main line portion Wa of the wire harness W is housed in the protector body 22, and the binding tape is wound from the outside of the protector body 22. Fix it. In addition, the branch electric wire 3 branched from the main line portion Wa is provided with ribs 32 of the branch portion 23 from the protector main body 22.
It is led out onto the a (32b, 32c) (mounting portion 35), and in that state, the tape 5 is wound from the outside of the main wall portion 31 to fix the branch electric wire 3 to the branch portion 23.

At this time, the branch electric wire 3 has ribs 32a, 32
Since it is placed on the upper ends of b and 32c and is not hidden in the inner corner of the L-shaped main wall portion 31, the branch electric wire 3 is
Even with a small number such as two or two, it is possible to reliably press and fix the branch electric wire 3 against the ribs 32a, 32b, 32c by winding the tape.

Further, when the branch electric wire 3 is placed on the upper ends of the ribs 32a, 32b, 32c, the main wall portion 31 and the ribs 32 are formed.
The step H2 of a, 32b, 32c prevents the branch electric wire 3 from falling off, so that the workability of tape winding is improved.
Further, since the step H2 is smaller than the diameter of the branch electric wire 3, the adhesive surface of the tape 5 can be surely attached to the upper outer peripheral surface of the branch electric wire 3 when the tape is wound, and the rib 3 is formed.
The branch electric wire 3 can be strongly pressed and fixed to the 2a, 32b, and 32c.

Further, since the main wall portion 31 of the branch portion 23 has an L-shaped cross-section, the main wall portion 31 itself is difficult to bend, and ribs 32a, 32b, 32c are formed on the inside thereof.
Therefore, it has high strength and is not easily damaged. In addition, rib 3
Since a plurality of 2a, 32b, 32c are provided at intervals, the branch electric wire 3 is stably supported, and the tape can be easily wound. Further, by mounting the branch electric wire 3 on the upper ends of the ribs 32a, 32b, 32c, the ribs 32a, 3b
Since it becomes difficult for the tape 5 to directly contact the exposed portions of 2b and 32c, particularly the upper end and the side edges, the tape 5 is not damaged.

Next, a second mode of the present invention will be described.

FIG. 2 is a perspective view showing a main part of the protector 41 of the second embodiment.

In this protector 41, the main wall portion 46 of the branch portion 43 is formed in a U-shaped cross section, and ribs 42a, 42b and 42c are provided inside thereof. Rib 42a,
The arrangement positions of 42b and 42c and the heights of the main wall portion 46 and the side wall 25 of the protector main body 22 with respect to the side wall 25 are the same as those in the first embodiment, and the upper ends of the ribs 42a, 42b and 42c are the mounting portions of the branch electric wire 3. It is 45.

Further, both side walls 41 of the U-shaped main wall portion 46.
The heights of a and 41b are the same as the height of the side wall 31b (see FIG. 1) of the first embodiment. In addition, the same elements as those in the first embodiment are designated by the same reference numerals in the figure, and the description will be omitted.

The case of this protector 41 also has the same effect as the protector 21 of the first embodiment. That is, the main wall 4
6 has a U-shaped cross section, and the main wall portion 46
Since ribs 42a, 42b, and 42c are provided inside, the branch portion 43 has high strength and is difficult to bend. Further, since the branch electric wire 3 is placed on the upper ends of the ribs 42a, 42b, 42c, even if the number of the branch electric wires 3 is one or two, the branch electric wire 3 can be reliably fixed by winding the tape. In addition to this, in the case of this protector 41, since the main wall portion 46 has a U-shaped cross section, the bottom surface of the branch portion 43 is rounded, and the tape sticking at the time of tape winding is improved,
The tape winding strength is increased and the workability of the tape winding is improved.

In the above embodiment, the case where the main walls 31, 41 are L-shaped or U-shaped in cross section is shown. However, if there is an L-shaped part or U-shaped part in a part of the cross section, the reinforcing effect by the ribs is also provided. Therefore, sufficient strength can be secured. Further, the number, arrangement, height, etc. of the ribs can be appropriately changed according to the expected number of branch electric wires, etc.

[0036]

As described above, according to the invention of claim 1, the branch portion provided in the protector body is constituted by the main wall portion having a specific cross-sectional shape and the rib, and the branch electric wire is provided at the upper end of the rib. Since it is placed, there is no fear of bending, and the branch wire can be pressed against the rib when the tape is wound, making it reliable even if the number of branch wires is as small as one or two. The electric wire can be fixed with tape.

According to the invention of claim 2, since the rib is provided inside the main wall portion having an L-shaped cross section, only one or two ribs are added to the conventional branch portion having an L-shaped cross section. It is possible to secure the fixing of the branch electric wire. Further, since there are a plurality of ribs at intervals, the electric wire can be reliably supported by the ribs in a stable state.

According to the third aspect of the invention, since the main wall portion has a U-shaped cross section, the bottom surface of the branch portion is rounded, so that the tape sticking at the time of tape winding is improved and the tape winding is improved. Strength increases. Also, the workability of tape winding is improved.

According to the invention of claim 4, there is a step between the upper end of the rib and the upper end of the main wall so that the former is lower. Therefore, when an electric wire is placed on the upper end of the rib, The step prevents the electric wire from falling off. Therefore, it is possible to save the work of pressing the electric wire so as not to drop when the tape is wound, the workability is improved, and the electric wire is not easily displaced even after the tape is wound. Further, since the step is set to be smaller than the diameter of the branch electric wire, the adhesive surface of the tape can be surely attached to the electric wire when the tape is wound, and the electric wire can be surely fixed.

[Brief description of drawings]

1 shows a protector according to a first aspect of the invention,
(A) is an overall perspective view, and (b) is a main part perspective view.

FIG. 2 is a perspective view of a main part of a protector according to a second embodiment of the present invention.

FIG. 3 is a perspective view showing an example of a conventional protector.

FIG. 4 is a perspective view showing another example of a conventional protector.

[Explanation of symbols]

 W wire harness 3 branch electric wire 5 tape 21 protector 22 protector body 23 branch part 31 main wall parts 32a, 32b, 32c rib 35 mount part 41 protector 43 branch part 46 main wall part 42a, 42b, 42c rib 45 mount part

Claims (4)

[Claims] 1. A wire harness W attached to a protector body.
In a protector for a wire harness provided with a branch portion for fixing the tape by winding the branch electric wire along the branch electric wire, the branch portion extends along the extension direction of the branch electric wire and has an L-shaped portion or at least a part of the cross-sectional shape. A main wall portion having a U-shaped portion, and a main wall portion which is arranged in a direction orthogonal to the extension direction of the branch electric wire and which is integrally formed inside the L-shaped or U-shaped section of the main wall portion and has an upper end of the branch electric wire. A protector for a wire harness, characterized in that the protector comprises a rib as a mounting portion. 2. The protector for a wire harness according to claim 1, wherein the main wall portion is constituted by a wall having an L-shaped cross section, and a plurality of the ribs are arranged at intervals in an extension direction of the branch electric wire. A protector for wire harness that is characterized. 3. The protector for a wire harness according to claim 1, wherein the main wall portion is formed of a wall having a U-shaped cross section, and a plurality of the ribs are arranged at intervals in the extension direction of the branch electric wire. A protector for wire harness that is characterized. 4. The protector for a wire harness according to claim 2, wherein a step is formed between the upper end of the rib and the upper end of the main wall so that the upper end of the rib is lower. The wire harness protector is characterized in that the step is set to be smaller than the diameter of the branch electric wire.