JP2013021753A - Arrangement structure of wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an arrangement structure of a wire harness which ensures protection of a branch part while suppressing the manufacturing cost.SOLUTION: In an arrangement structure of a wire harness 1 according to this invention, a wire harness 10, having a main line 11 and a branch line 12 branched from the main line 11 through a branch part 13, is sheathed by a long corrugate tube 20. The corrugate tube 20 includes: a first tube 21 covering the main line 11 and having a first opening end 21A disposed on the branch line 12 side; and a second tube 22 covering the main line 11 and having a second opening end 22A butting the first opening end 21A. Cutout parts 30, which are cut out so as to fit the cross section shape of the branch line 12, are provided at the first opening end 21A and the second opening end 22A. The cutout parts 30 are composed of a first cutout part 31 formed in the first opening end 21A and a second cutout part 32 formed in the second opening end 22A.

Description

  The present invention relates to a wiring harness wiring structure in which a wire harness having a main line and a branch line is covered with a long corrugated tube (tubular body).

  Conventionally, a wire harness composed of a plurality of electric wires routed in a vehicle body such as an automobile is covered with a long (cylindrical) corrugated tube (tubular body), thereby preventing interference with other members. Protected against impacts from stepping stones.

  In the branch portion that branches from the main line to the branch line in such a wire harness, the branch line interferes and the corrugated tube cannot be sheathed. Therefore, it is common to provide a T-shaped joint member that matches the shape of the branch portion ( For example, see Patent Document 1).

Japanese Patent Laid-Open No. 10-84611 (2nd to 4th pages, FIGS. 1 and 2)

  However, in the conventional technique described above, although the branch portion can be protected, it is necessary to provide another member such as a joint member. For this reason, there was an increase in the number of parts, resulting in an increase in manufacturing cost.

  Then, an object of this invention is to provide the wiring structure of the wire harness which can protect a branch part reliably, suppressing manufacturing cost.

  In order to solve the above-described problems, the present invention has the following features. First, the first feature of the present invention is that a wire harness (wire harness 10) having a main line (main line 11) and a branch line (branch line 12) branched from the main line via a branch part (branch part 13) is long. Wire harness wiring structure (wire harness wiring structure 1) covered with a tubular tube (corrugated tube 20), the tube covering the main line and disposed on the branch line side A first tubular body (first tube 21) having a first opening end (first opening end 21A), and a second opening end (second opening end 22A) that covers the main line and abuts against the first opening end. A second tubular body (second tube 22) having a cutout portion (cutout portion 30) that is cut out so as to match the cross-sectional shape of the branch line. The notch is It is constituted by a first cutout portion (first cutout portion 31) formed at the first opening end and a second cutout portion (second cutout portion 32) formed at the second opening end. And

  According to this feature, the notch is notched so as to match the cross-sectional shape of the branch line. That is, in a state where the first opening end and the second opening end are in contact with each other, the first notch portion and the second notch portion match the sectional shape of the branch line. Accordingly, the vicinity of the branch portion can be reliably protected by the first tubular body and the second tubular body. Therefore, the wire harness can be reliably protected from interference with other members and impacts such as stepping stones.

  Moreover, the notch part comprised by the 1st notch part and the 2nd notch part is provided in a 1st opening end and a 2nd opening end. Thereby, the 1st notch part and the 2nd notch part are fitted according to a branch line, and the branch part into which a main line and a branch line branch can be protected only by abutting the 1st opening end and the 2nd opening end. That is, it is not necessary to provide a separate member as in the prior art in order to protect the branch portion, and the work of attaching this separate member is eliminated. For this reason, it is possible to reduce the working efficiency and suppress the manufacturing cost without increasing the number of parts.

  A second feature of the present invention relates to the first feature of the present invention, wherein at least one of the first tube body and the second tube body is provided with a slit (slit 21B, 22B), and the notch is formed so as to straddle the slit.

  According to this feature, the notch is formed so as to straddle the slit. Thereby, when forming a notch part in a 1st tube body or a 2nd tube body, a slit becomes a mark of the position which forms a notch part, and efficiency of the operation | work which forms a notch part can be aimed at.

  Moreover, a tubular body can be attached to a main line so that it may insert toward a main line from the notch part side. For this reason, at the time of attachment of the tubular body to the main line, the edge portion formed by the slits becomes difficult to contact the main line, and damage to the main line can be prevented.

  A third feature of the present invention relates to the first or second feature of the present invention, and is summarized in that the first cutout portion and the second cutout portion have the same shape.

  According to this feature, the first notch portion and the second notch portion have the same shape. Thereby, unlike the case where the first cutout portion and the second cutout portion have different shapes, it is not necessary to use the first cutout portion and the second cutout portion separately. For this reason, the work of forming the notch in the first tube body or the second tube body is facilitated, the management of the first tube body and the second tube body can be prevented from becoming complicated, and the manufacturing cost can be reduced. be able to.

  A fourth feature of the present invention is according to the third feature of the present invention, wherein the cross-sectional shape of the branch line is circular, and the first notch portion and the second notch portion are formed in a U shape. This is the gist.

  According to this feature, the cross-sectional shape of the branch line is a circular shape, and the first cutout portion and the second cutout portion are formed in a U shape. Thereby, when the cross-sectional shape of a general branch line is circular, it becomes easy to protect especially the branch part vicinity.

  A fifth feature of the present invention relates to the first to fourth features of the present invention, wherein the first opening end is formed at the position of the smallest diameter of the first tubular body, and the second opening end is The gist is that it is formed at the position of the smallest diameter of the second tubular body.

  According to such a feature, the first open end is formed at the position of the smallest diameter of the first tubular body, and the second open end is formed at the position of the smallest diameter of the second tubular body. Thereby, the edge part formed in a 1st opening end or a 2nd opening end does not protrude toward the longitudinal direction of a tubular body. For this reason, when attaching the tubular body to the main line, the edge portions formed at the first opening end and the second opening end do not come into contact with the main line, thereby making it easier to prevent damage to the main line.

  A sixth feature of the present invention relates to the first to fourth features of the present invention, wherein the first opening end is formed at the position of the largest diameter of the first tubular body, and the second opening end is The gist is that it is formed at the position of the smallest diameter of the second tubular body.

  According to such a feature, the first opening end is formed at the position of the largest diameter of the first tubular body, and the second opening end is formed at the position of the smallest diameter of the second tubular body. As a result, the second opening end enters the first opening end and is positioned, so that the first tube body and the second tube body can be easily attached to the main line. Moreover, since a part of 1st tubular body and a part of 2nd tubular body overlap, the branch part vicinity is reinforced and it becomes easier to protect the branch part vicinity.

  According to the characteristic of this invention, the wiring structure of the wire harness which can protect a branch part reliably can be provided, suppressing manufacturing cost.

FIG. 1 is a perspective view showing a wire harness routing structure 1 according to the present embodiment. FIG. 2 is an exploded perspective view showing the wiring structure 1 of the wire harness according to the present embodiment. Fig.3 (a) is a top view which shows the corrugated tube 20 which concerns on this embodiment, FIG.3 (b) is a side view which shows the corrugated tube 20 which concerns on this embodiment. FIG. 4 is a diagram illustrating a method for manufacturing the corrugated tube 20 according to the present embodiment. FIG. 5 is a diagram illustrating a method for assembling the corrugated tube 20 according to the present embodiment to the wire harness 10. FIG. 6A is a plan view (before joining) of the corrugated tube 20 according to the modified example, and FIG. 6B is a plan view (after joining) of the corrugated tube 20 according to the modified example. FIG. 7: is a perspective view which shows the wiring structure 1 of the wire harness which concerns on other embodiment.

  Next, an embodiment of a wiring harness wiring structure according to the present invention will be described with reference to the drawings. Specifically, (1) Description of the wiring structure of the wire harness, (2) Corrugated tube manufacturing method, (3) Corrugated tube assembly method, (4) Action / effect, (5) Modification example, ( 6) Other embodiments will be described.

  In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones.

  Accordingly, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

(1) Description of the wiring structure of a wire harness First, the wiring structure 1 of the wire harness which concerns on this embodiment is demonstrated, referring drawings. FIG. 1 is a perspective view showing a wire harness routing structure 1 according to the present embodiment. FIG. 2 is an exploded perspective view showing the wiring structure 1 of the wire harness according to the present embodiment. Fig.3 (a) is a top view which shows the corrugated tube 20 which concerns on this embodiment, FIG.3 (b) is a side view which shows the corrugated tube 20 which concerns on this embodiment.

  As shown in FIG.1 and FIG.2, in the wiring structure 1 of a wire harness, the wire harness 10 is armored by the elongate corrugated tube 20 (tubular body). Thereby, the wire harness 10 is protected from impacts such as interference with other members and flying stones.

  The wire harness 10 is composed of a plurality of electric wires arranged in a vehicle body (not shown) such as an automobile. The wire harness 10 includes a substantially cylindrical main line 11 (trunk line) and a substantially cylindrical branch line 12 (branch line) that branches from the main line 11 in one direction (one line) via a branching portion 13. In the present embodiment, the cross-sectional shape of the main line 11 and the cross-sectional shape of the branch line 12 are each circular.

  The corrugated tube 20 covers the wire harness 10 and is formed of a substantially cylindrical resin member (for example, a tube having irregularities on the outer peripheral surface). The corrugated tube 20 includes a first tube 21 (first tube) that covers the main line 11 on one side of the branch portion 13 and a second tube 22 (second tube) that covers the main line 11 on the other side of the branch portion 13. And.

  The first tube 21 has a first opening end 21A arranged on the branch line 12 side. In the present embodiment, as shown in FIG. 3, the first opening end 21 </ b> A is formed at the position of the smallest diameter (PL; Path, Lane) of the first tube 21, that is, at the concave portion of the outer peripheral surface. The first tube 21 has a slit 21 </ b> B along the longitudinal direction L of the corrugated tube 20.

  The second tube 22 has the same diameter as the first tube 21. The second tube 22 is disposed on the branch line 12 side and has a second opening end 22A that abuts against the first opening end 21A. In the present embodiment, as shown in FIG. 3, the second opening end 22 </ b> A is formed at the position of the smallest diameter (PL; Path, Lane) of the second tube 22, that is, at the concave portion of the outer peripheral surface. The second tube 22 is formed with a slit 22 </ b> B along the longitudinal direction L of the corrugated tube 20.

  As shown in FIGS. 1 to 3, the first opening end 21 </ b> A and the second opening end 22 </ b> A are cut to match the cross-sectional shape of the branch line 12 (in this embodiment, along the branch line 12). A notched portion 30 is provided.

  Here, “the cutout portion 30 matches the sectional shape of the branch line 12” means that the cutout portion 30 completely matches the sectional shape of the branch line 12, or that the cutout portion 30 is slightly different from the sectional shape of the branch line 12. (For example, the notch 30 is slightly larger than the sectional shape of the branch line 12 (that is, a slight gap is formed between the branch line 12 and the notch 30).

  The notch 30 is configured by a first notch portion 31 formed at the first opening end 21A and a second notch portion 32 provided at the second opening end 22A. As shown to Fig.3 (a), the 1st notch part 31 and the 2nd notch part 32 (notch part 30) are formed so that the slits 21B and 22B may be straddled, respectively. Moreover, the 1st notch part 31 and the 2nd notch part 32 are formed in U shape (semi-arc shape).

(2) Manufacturing method of corrugated tube Next, the manufacturing method of the corrugated tube 20 (the 1st tube 21 and the 2nd tube 22) mentioned above is demonstrated, referring drawings. FIG. 4 is a diagram illustrating a method for manufacturing the corrugated tube 20 according to the present embodiment.

  As shown in FIG. 4A, a slit S is formed in the corrugated tube 20 in advance. As shown in FIG. 4B, the corrugated tube 20 in which the slits S are formed is cut at a position corresponding to the branch portion 13 and divided into a first tube 21 and a second tube 22. As a result, the first tube 21 is formed with a first opening end 21 </ b> A, and the second tube 22 is formed with a second opening end 22 </ b> A.

  And as shown in FIG.4 (c), in each of the 1st opening end 21A of the 1st tube 21, and the 2nd opening end 22A of the 2nd tube 22, the notch part 30 (U-shaped 1st notch part) 31 and a second notch 32) are formed. At this time, the first cutout portion 31 and the second cutout portion 32 are formed so as to straddle the slits 21B and 22B, respectively.

(3) Assembling method of corrugated tube Next, the method of assembling the corrugated tube 20 (the 1st tube 21 and the 2nd tube 22) mentioned above to the wire harness 10 is demonstrated, referring drawings. FIG. 5 is a diagram illustrating a method for assembling the corrugated tube 20 according to the present embodiment to the wire harness 10.

  As shown in FIG. 5A, the first notch portion 31 formed at the first opening end 21 </ b> A of the first tube 21 is inserted toward the main line 11, and the first tube 21 is attached to the main line 11. Then, as shown in FIG. 5B, the first cutout portion 31 is abutted against the branch line 12 while rotating the first tube 21.

  Similarly, the second notch portion 32 formed at the second opening end 22 </ b> A of the second tube 22 is inserted toward the main line 11, and the second tube 22 is attached to the main line 11. Then, as shown in FIG. 5C, the second notch portion 32 is abutted against the branch line 12 while rotating the second tube 22. Thereby, the second opening end 22A also hits the first opening end 21A.

  Thereafter, as shown in FIG. 5 (d), the first tube 21 and the second tube 22 are fixed by winding an adhesive tape 40 or the like around the branch portion 13. In addition, after assembling a corrugated tube (not shown) to the branch line 12, the adhesive tape 40 or the like may be wound around the branch portion 13.

(4) Action / Effect In the present embodiment described above, the cutout portion 30 is cut out so as to match the cross-sectional shape of the branch line 12. That is, the first cutout portion 31 and the second cutout portion 32 match the cross-sectional shape of the branch line 12 in a state where the first open end 21A and the second open end 22A are in contact with each other. Thereby, the vicinity of the branch portion 13 can be reliably protected by the first tube 21 and the second tube 22. Therefore, the wire harness 10 can be reliably protected from interference with other members and impacts such as flying stones.

  The first opening end 21 </ b> A and the second opening end 22 </ b> A are provided with a cutout portion 30 constituted by a first cutout portion 31 and a second cutout portion 32. As a result, the first cutout portion 31 and the second cutout portion 32 are fitted in accordance with the branch line 12, and the branch portion where the main line 11 and the branch line 12 branch only by abutment of the first opening end 21A and the second opening end 22A. 13 can be protected. That is, it is not necessary to provide a separate member as in the prior art to protect the branching portion 13, and there is no need to attach this separate member. For this reason, it is possible to reduce the working efficiency and suppress the manufacturing cost without increasing the number of parts.

  In the present embodiment, the cutout 30 is formed so as to straddle the slits 21B and 22B. Thereby, the corrugated tube 20 can be attached to the main line 11 so as to be inserted toward the main line 11 from the cutout portion 30 side. For this reason, when the corrugated tube 20 is attached to the main line 11, the edge portions formed by the slits 21 </ b> B and 22 </ b> B are less likely to contact the main line 11, and damage to the main line 11 can be prevented.

  In the present embodiment, the cutout portion 30 includes a first cutout portion 31 and a second cutout portion 32. Thereby, when forming the notch part 30 in the 1st tube 21 or the 2nd tube 22, the slit 21B, 22B becomes a mark of the position which forms the notch part 30, and the efficiency of the operation | work which forms the notch part 30 is aimed at. Can do.

  Moreover, both the 1st tube 21 and the 2nd tube 22 can be attached to the main line 11 so that it may insert toward the main line 11 from the notch part 30 side. For this reason, when the first tube 21 and the second tube 22 are attached to the main line 11, the edge portions formed by the slits 21B and 22B are difficult to contact the main line 11, and damage to the main line 11 can be prevented. .

  In the present embodiment, the first cutout portion 31 and the second cutout portion 32 have the same shape. Thereby, unlike the case where the 1st notch part 31 and the 2nd notch part 32 are different shapes, it becomes unnecessary to use each of the 1st notch part 31 and the 2nd notch part 32 separately. For this reason, while the work which forms the notch part 30 in the 1st tube 21 or the 2nd tube 22 becomes easy, it can prevent that the management of the 1st tube 21 and the 2nd tube 22 becomes complicated, and suppresses manufacturing cost. can do.

  In this embodiment, the cross-sectional shape of the branch line 12 is circular, and the first cutout portion 31 and the second cutout portion 32 are formed in a U shape. Thereby, when the cross-sectional shape of the general branch line 12 is circular, it becomes easy to protect especially the branch part 13 vicinity.

  The first tube 21 and the second tube 22 have the same diameter. Thereby, compared with the case where the 1st tube 21 and the 2nd tube 22 are different diameters, it becomes easy to fix the 1st tube 21 and the 2nd tube 22 with the adhesive tape 40 etc. in the branch part 13 vicinity.

  In the present embodiment, the first opening end 21 </ b> A is formed at the position of the smallest diameter of the first tube 21, and the second opening end 22 </ b> A is formed at the position of the smallest diameter of the second tube 22. Thereby, the edge part formed in 21 A of 1st opening ends and 22 A of 2nd opening ends does not protrude toward the longitudinal direction L of the corrugated tube 20. FIG. For this reason, when the corrugated tube 20 is attached to the main line 11, the edge portions formed at the first opening end 21 </ b> A and the second opening end 22 </ b> A do not come into contact with the main line 11, thereby making it easier to prevent damage to the main line 11. Become.

(5) Modification Example Next, a modification example of the corrugated tube 20 according to the above-described embodiment will be described with reference to the drawings. FIG. 6A is a plan view (before joining) of the corrugated tube 20 according to the modified example, and FIG. 6B is a plan view (after joining) of the corrugated tube 20 according to the modified example. In addition, the same code | symbol is attached | subjected to the same part as the corrugated tube 20 which concerns on embodiment mentioned above, and a different part is mainly demonstrated.

  In the embodiment described above, the first opening end 21 </ b> A is formed at the position of the smallest diameter of the first tube 21, and the second opening end 22 </ b> A is formed at the position of the smallest diameter of the second tube 22.

  On the other hand, in the modified example, as shown in FIG. 6, the first opening end 21 </ b> A is formed at the position of the largest diameter (LD; Large, Diameter) of the first tube 21, that is, at the convex portion of the outer peripheral surface. Has been. Further, the second opening end 22A is formed at the position of the smallest diameter (PL; Path, Lane) of the second tube 22, that is, the concave portion of the outer peripheral surface.

  In such a modified example, since the second opening end 22A enters the first opening end 21A and is positioned, the first tube 21 and the second tube 22 are easily attached to the main line 11. Moreover, since a part of 1st tube 21 and a part of 2nd tube 22 overlap, the branch part 13 vicinity is reinforced and it becomes easier to protect the branch part 13 vicinity.

  The first opening end 21A has been described as being formed at the position of the largest diameter of the first tube 21, and the second opening end 22A has been described as being formed at the position of the smallest diameter of the second tube 22. The first opening end 21 </ b> A may be formed at the smallest diameter position of the first tube 21, and the second opening end 22 </ b> A may be formed at the largest diameter position of the second tube 22.

(6) Other Embodiments As described above, the contents of the present invention have been disclosed through the embodiments of the present invention. However, it is understood that the description and drawings constituting a part of this disclosure limit the present invention. Should not. From this disclosure, various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art.

  For example, the embodiment of the present invention can be modified as follows. Specifically, the tubular body has been described as being a corrugated tube 20 having irregularities on the outer peripheral surface, but is not limited thereto, and may be a corrugated tube having no irregularities on the outer peripheral surface. What is necessary is just to cover the wire harness 10.

  Moreover, although the branch line 12 demonstrated as what branches in one direction (one) from the main line 11 via the branch part 13, it is not limited to this, For example, as shown in FIG. It may be branched to (three), and of course may be branched in a plurality of directions. In this case, the notch 30 is preferably elliptical in order to easily protect the branch line 12 in a state along the branch line 12 that branches in a plurality of directions as much as possible.

  Here, when the branch part 13 is protected by another member such as a joint member as in the prior art, another member such as a joint member must be formed in a shape corresponding to the branch part 13 in advance. For this reason, when another member, such as a joint member, does not match the shape of the branch part 13 (for example, when the branch line 12 branches in a plurality of directions at one branch part 13), the joint member is not versatile. No. However, in the present application, as described above, since the cutout portion 30 has an elliptical shape, it can be adapted to various shapes of the branch portion 13, and therefore, it is excellent in versatility.

  Moreover, although the notch 30 was demonstrated as what is provided in both the 1st opening end 21A and the 2nd opening end 22A, it is not limited to this, The 1st opening end 21A and the 2nd opening end 22A of It may be provided on at least one side.

  In addition, the first tube 21 and the second tube 22 have been described as being provided with slits 21B and 22B, respectively, but the present invention is not limited to this, and the first tube 21 and the second tube 22 are provided with slits. In addition, at least one of the first tube 21 and the second tube 22 may be provided with a slit.

  Moreover, although the 1st notch part 31 and the 2nd notch part 32 (notch part 30) demonstrated as what was formed so that it might straddle slit 21B, 22B, respectively, it is not limited to this, Slit 21B, It is not necessary to straddle 22B. However, it is preferable that at least a part of the first cutout portion 31 and the second cutout portion 32 communicate with the slit.

  Moreover, although the cross-sectional shape of the branch line 12 was demonstrated as what is circular shape, it is not limited to this, Other shapes (for example, elliptical shape, triangular shape, square shape) may be sufficient. Similarly, although the 1st notch part 31 and the 2nd notch part 32 (notch part 30) demonstrated as what was formed in U shape so that the cross-sectional shape (substantially circular shape) of the branch line 12 might be met, The shape is not limited to the above, and may be in accordance with the cross-sectional shape of the branch line 12, or may be another shape (for example, an elliptical shape, a triangular shape, or a square shape).

  As described above, the present invention naturally includes various embodiments that are not described herein. Therefore, the technical scope of the present invention is determined only by the invention specifying matters according to the scope of claims reasonable from the above description.

DESCRIPTION OF SYMBOLS 1 ... Wire harness wiring structure 10 ... Wire harness 11 ... Main line 12 ... Branch line 13 ... Branch part 20 ... Corrugated tube (tubular body)
21 ... 1st tube (1st pipe body)
21A ... 1st opening end 21B ... Slit 22 ... 2nd tube (2nd pipe body)
22A ... 2nd opening end 22B ... Slit 30 ... Notch part 31 ... 1st notch part 32 ... 2nd notch part 40 ... Adhesive tape

Claims (6)

A wire harness having a main line and a branch line branched from the main line via a branch part is a wiring structure of a wire harness covered with a long tubular body,
The tube is
A first tubular body covering the main line and having a first opening end disposed on the branch line side;
A second tubular body that covers the main line and has a second opening end that abuts against the first opening end;
The first opening end and the second opening end are provided with notch portions that are notched so as to match the cross-sectional shape of the branch line,
The notch is
A first notch portion formed at the first opening end;
A wire harness routing structure comprising: a second cutout portion formed at the second opening end. The wiring structure of the wire harness according to claim 1,
At least one of the first tubular body and the second tubular body is formed with a slit along the longitudinal direction of the tubular body,
The wiring harness wiring structure, wherein the notch is formed so as to straddle the slit. A wiring harness wiring structure according to claim 1 or 2,
The wiring structure for a wire harness, wherein the first cutout portion and the second cutout portion have the same shape.
It is a wiring structure of the wire harness of Claim 3, Comprising:
The cross-sectional shape of the branch line is circular,
The wire harness routing structure, wherein the first cutout portion and the second cutout portion are formed in a U-shape. It is a wiring structure of the wire harness in any one of Claim 1 thru | or 4, Comprising:
The first open end is formed at the position of the smallest diameter of the first tubular body,
The wire harness routing structure, wherein the second opening end is formed at the position of the smallest diameter of the second tubular body. It is a wiring structure of the wire harness in any one of Claim 1 thru | or 4, Comprising:
The first open end is formed at the position of the largest diameter of the first tubular body,
The wire harness routing structure, wherein the second opening end is formed at the position of the smallest diameter of the second tubular body.

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