JP2003259528A - Sheathing material for wire harness, and method and structure for sheathing the wire harness using the sheathing material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the number of part items by fitting a sheathing material regardless of size of wire harness. <P>SOLUTION: The sheathing material is made of a synthetic resin. A recess 11 and a projection 12 are alternately and continuously provided in an X direction over the front. A thin hinge section 13 that is continuous to the recess 11 and the projection 12 in the X direction is provided. At the same time, a flat sheathing material 10 where the thin hinge 13 is formed at a required pitch in a Y direction is provided. The sheathing material 10 for the wire harness is cut in a rectangular shape to the length of a section requiring protection of a wire harness W/H and thickness of wire harness, is flexed by the thin hinge section 13, and is wound around the wire harness W/H. Then, the recesses 11a and 11b at both the ends and projections 12a and 12b at both the ends are connected and fixed each. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exterior material for a wire harness, an exterior direction and an exterior structure of a wire harness using the exterior material, and more specifically, protects a wire harness installed in an automobile from an interference material or the like. The present invention relates to a corrugated tube-shaped exterior material.

[0002]

2. Description of the Related Art A wire harness installed in an automobile is provided with a corrugated tube for the purpose of protection from external interference materials and the like, and FIG. 5 shows a conventional corrugated tube 1. The corrugated tube 1 has a cylindrical shape whose peripheral wall is formed in a concavo-convex shape, and covers the entire circumference of the wire harness to protect it. Further, the slit 2 is provided in the length direction of the tube for inserting the wire harness.

[0003]

In recent years, many sensors and electronic devices have been installed in automobiles in order to improve safety performance, running performance and comfort, and the wiring harness wiring structure is complicated. And the outer diameter of the wire harness is large and small. Therefore, in the case of the corrugated tube 1, the corrugated tube 1 must be manufactured in accordance with the diameter of the wire harness, which causes a problem of increasing the number of parts. Actually, φ5 to φ28
Corrugated tubes with 9 different thicknesses are available.

The corrugated tube 1 is attached to the wire harness by inserting the wire harness while pushing the slit 2 open with a jig. However, the edge of the slit 2 may damage the wire harness protruding from the corrugated tube. There is.

The present invention has been made in view of the above problems, and provides a corrugated tube-shaped exterior material which can be used regardless of the diameter of a wire harness without the need to previously provide corrugated tubes having various diameters. That is the issue.

[0006]

In order to solve the above-mentioned problems, the present invention is made of synthetic resin and is provided with recesses and protrusions alternately and continuously provided over the entire surface in the X direction. A thin hinge part which is continuous in the X direction and is provided with an exterior material in which the thin hinge part is formed in the Y direction at a required pitch, and the exterior material is cut into a required rectangular shape. (EN) Provided is a wire harness exterior material which is bent into a ring shape by winding in the Y direction and has a required length and a corrugated tube shape having slits in the axial direction.

With the above construction, the wire harness can be mounted regardless of the thickness of the wire harness, so that it is not necessary to prepare a wide variety of corrugated tubes in advance according to the thickness of the wire harness, and the cost can be greatly reduced. It is possible to reduce. Also, since it is installed so as to be wound around the wire harness, it is not necessary to pass the wire harness through the jig for slit opening and opening unlike the conventional slit corrugated tube, and the wire harness may be damaged at the edge of the slit. Nor.

Further, when the above-mentioned exterior material is formed into an annular shape, the concavo-convex portion on one end side is overlapped with the concavo-convex portion on the other end side so as to be connected and held in the circular ring shape so as to be attached to the wire harness. Furthermore, in order to ensure the attachment to the wire harness, the tape may be roughly wound over the entire length of the exterior material, or only the end portion of the exterior material may be fixed by the tape.

When the exterior material is bent into an annular shape, it can be adapted to a large-diameter wire harness by expanding the thin-walled hinge portion and separating both side portions sandwiching the thin-walled hinge portion. On the other hand, it is possible to adapt to a wire harness having a small diameter by bringing both side parts close to each other without expanding the thin hinge part. Therefore, the pitch of the thin hinge part can be 2
If you prepare about one piece, it can be applied to most wire harnesses with different diameters.

[0010]

DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show an exterior material 10 for a wire harness according to the present invention, the wire harness W / H
By winding the exterior member 10 around the exterior and applying the exterior material, the wire harness is protected from the external interference material in the same structure as the wire harness W / H is externally fitted by the corrugated tube.

Material (exterior material) 10 'of the exterior material 10
As shown in FIG. 2, is a flat plate shape made of synthetic resin, and the recesses 11 and the projections 12 are alternately provided continuously in the X direction over the entire surface. A thin hinge portion 13 that is continuous in the direction is provided. These thin hinges 13 are formed at a required pitch in the Y direction.

The exterior material 10 'is first cut in the Y direction according to the length of the section of the wire harness W / H to be protected which requires protection, and the thickness (outer diameter) of the wire harness W / H. In accordance with the above, the rectangular exterior material 10 is cut by cutting in the X direction.

Next, as shown in FIG. 4, a portion requiring protection of the wire harness W / H is placed in the X direction at the center of the upper surface of the substantially plate-shaped exterior member 10. Then, the exterior material 10
Is wound along the outer peripheral surface of the wire harness W / H from both ends in the Y direction, and the concave portions 11a and 11b and the convex portions 12a and 12b at both ends are overlapped with each other and fitted to each other to be connected and fixed. By sequentially bending the thin-walled hinge portion 13 as a fulcrum when winding the exterior material 10, it is possible to form an annular shape along the outer peripheral surface of the wire harness W / H, and the wire harness can be attached to a conventional corrugated tube. The same configuration as in the passed state can be adopted. Further, in order to secure the fixing of the outer jacket 10 and the wire harness W / H, the tape T is wound around both ends of the outer jacket 10 and fixed to the wire harness W / H.

With the above arrangement, the wire harness W / H
Regardless of the thickness of the corrugated tube, the exterior material 10 can be attached to the corrugated tube to form a wire harness. Therefore, it is not necessary to prepare various types of corrugated tubes according to the thickness of the wire harness W / H in advance, and the number of parts of the exterior material can be significantly reduced. In addition, by forming the exterior material continuously and cutting it into a rectangular shape of the required size, it is possible to form an exterior material that can be attached only to the part of the wire harness that requires protection, Does not occur. Furthermore, since the exterior material 10 is wrapped around the wire harness W / H for exterior packaging, the wire harness W / H is not damaged during exterior packaging.

[0015]

As is apparent from the above description, according to the wire harness exterior material of the present invention, it is possible to mount the wire harness regardless of the thickness of the wire harness. Therefore, it is not necessary to provide a wide variety of exterior materials. Therefore, the number of parts can be reduced. Further, since the wire harness is mounted so as to be wound around the wire harness, the wire harness is not damaged during the mounting.

Further, the annular shape can be maintained by fitting the concavo-convex portion on the one end side to the concavo-convex portion on the other end in a state where the outer casing material is in the annular shape, and the outer casing material can be easily attached to the wire member. Can be attached to the harness.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a wire harness exterior material according to the present invention is mounted on a wire harness.

FIG. 2 is a perspective view of a wire harness exterior material according to the present invention.

[Fig. 3] Fig. 3 shows an I- of a wire harness exterior material according to the present invention
It is an I line sectional view.

FIG. 4 is a cross-sectional view showing a method of mounting a wire harness exterior material according to the present invention on a wire harness.

FIG. 5 is a perspective view of a conventional corrugated tube.

[Explanation of symbols]

10 Wire harness exterior materials 11 recess 12 convex 13 Thin hinge part W / H wire harness

Claims (3)

[Claims] 1. A synthetic resin material, wherein concave portions and convex portions are alternately provided continuously over the entire surface in the X direction, and a thin hinge portion continuous in the X direction is provided between the concave portion and the convex portion. An exterior material in which thin hinge portions are formed at a required pitch in the Y direction is provided, the exterior material is cut into a required rectangular shape, and the thin hinge portion is bent and wound in the Y direction to form an annular shape. A wire harness exterior material having a corrugated tube shape having a length and a slit in the axial direction. 2. The wire harness exterior material according to claim 1, wherein a part of the wire harness is placed on the exterior material in a flat plate state before the exterior material is bent into an annular shape. Then, a method for sheathing a wire harness, wherein the sheathing material is bent in the Y direction to form an annular shape, and the unevenness on one end side of the annular ring is overlapped and connected to the unevenness on the other end side. 3. A wire harness in which the wire harness is sheathed with the sheathing material for a wire harness according to claim 1, and the ring-shaped concavo-convex portion on one end side is connected by overlapping the concavo-convex portion on the other end side. Exterior structure.