JP2008077910A - Branch structure of wire harness, and manufacturing method of branch part of wire harness - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a branch structure of a wire harness allowing a branch line to be freely moved to some extent, and capable of facilitating mounting work of the wire harness, and of reducing cost. <P>SOLUTION: A spiral tube 10 made of a soft resin with a spiral slit 12 formed on its circumferential wall 11 is put on the outer periphery of a main line Wa of the wire harness W, and a branch line Wb separated from the main line Wa is extracted to the outside from the slit 12 of the spiral tube 10. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a branch structure of a wire harness mainly used for a vehicle such as an automobile and a method for producing a branch part of a wire harness.

  Conventionally, when producing a branch part of a wire harness, for example, as shown in FIG. 3, an electric wire is placed on the routing jig 1 to branch the branch line Wb from the trunk line Wa. M was fixed by winding the tape T (see Patent Document 1).

  Further, when the tube 2 such as a corrugated tube is put on the outer periphery of the trunk line Wa, the end portions 2 a of the tube 2 positioned before and after the branch portion M are fixed by winding the tape T.

  Further, instead of the tape T or together with the tape T, the branch portion M may be fixed with a tie band.

JP 2005-267896 A

  However, if the branch part M is fixed by winding the tape T or winding the tie band, the branch line Wb will be strongly restrained, so there is no flexibility at the stage of attaching the wire harness to the vehicle. There was a problem that it was difficult to do.

  In particular, for example, when the length of the branch line Wb is made as short as possible due to design requirements, if the length of the branch line is slightly shorter than the actual installation dimension, a connector (not shown) at the end of the branch line Wb is shown. ) Cannot be easily connected to a fixed connector (not shown) as the counterpart.

  In addition, when the tube 2 is covered with the main line Wa, two parts of the tube 2 and the tape T are necessary, and the number of parts is increased, and the production takes time, which increases the cost.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to move the branch line freely to some extent, to facilitate the attachment work of the wire harness, and to connect the trunk line to the tube. Even in the case of protection with a wire harness, it is an object of the present invention to provide a wire harness branching structure and a method of manufacturing a wire harness branching part that can reduce the cost by eliminating unnecessary parts as much as possible.

  In order to achieve the above-described object, the branch structure of the wire harness according to the present invention includes a soft resin spiral tube having a spiral slit formed on the peripheral wall, and covers the outer periphery of the trunk line of the wire harness, and branches from the trunk line. The branched line is drawn out from the slit of the spiral tube.

  In the branch structure of this wire harness, the flexible opening of the slit of the spiral tube is used (in other words, the movement of at least a part of the peripheral wall of the spiral tube on the trunk line) is used to pull out from the slit. The branch line can be moved freely to some extent. That is, a certain amount of flexibility can be given to the movement of the branch line. Therefore, even when the branch line is manufactured with the shortest length according to the design requirements, it can be easily attached to the vehicle with a margin by appropriately moving the branch line, and the connector can be easily fitted. . In addition, by simply winding the spiral tube around the outer circumference of the trunk line, it is possible to simultaneously restrain the trunk line and loosely restrain the branch line lead-out portion, eliminating the need for tape winding, reducing tape parts and omitting winding work. As a result, the cost can be reduced. Further, since only the spiral tube is used, unlike the case of tape winding, it is easy to disassemble later, and since it is a one-part structure and easy to separate, the recyclability is improved. In addition, since the branch line is simply moved using the spread of the slit of the spiral tube, the overall length of the wire harness is not affected, and quality can be maintained at that point.

  Further, in order to achieve the above-described object, the method for manufacturing the branch portion of the wire harness according to the present invention branches the branch line from the trunk line placed on the routing jig, and in that state, the spiral wall is formed on the peripheral wall. A spiral tube made of a soft resin in which a slit is formed is wound around the trunk line, and the branch line is drawn out from the slit.

  According to the method for manufacturing the branch portion of the wire harness, the branch portion can be manufactured simply by branching the branch line from the main line on the routing jig and winding the spiral tube in this state. The same effect as the branch structure of the wire harness which concerns can be show | played.

  According to the present invention, the branch line of the wire harness and the branch part of the wire harness that can move the branch line freely to some extent, can facilitate the mounting work of the wire harness, and can reduce the cost. Can be provided.

  The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading through the best mode for carrying out the invention described below with reference to the accompanying drawings.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the drawings.

  Fig.1 (a) and FIG.1 (b) are perspective views which show the structure of the branch part vicinity of a wire harness. In the branch structure of the wire harness W shown in FIG. 1A and FIG. 1B, the spiral tube 10 made of a soft resin in which the spiral slit 12 is formed in the peripheral wall 11 is connected to the trunk line Wa of the wire harness W. A branch line Wb that covers the outer periphery and branches from the trunk line Wa is drawn out from the slit 12 of the spiral tube 10.

  In this way, when the spiral tube 10 is wound around the trunk line Wa, unlike the case where the branch line Wb drawn out from the slit 12 of the spiral tube 10 is restrained by conventional tape winding, the arrow A in FIG. Like, you can shake freely.

  In the branch structure of the wire harness W, the function of the spiral tube 10 that the slit 12 opens flexibly is used (in other words, the function that the peripheral wall 11 slides freely on the trunk line Wa is used. By adjusting the opening dimension H of the slit 12 of the spiral tube 10, the branch line Wb drawn out from the slit 12 can be freely moved to some extent as indicated by the arrow B in FIG. it can.

  That is, a certain amount of flexibility can be given to the movement of the branch line Wb. Therefore, even if the branch line Wb is manufactured with the shortest length according to the design requirements, it can be easily attached to the vehicle with a margin by appropriately moving the branch line Wb. A fitting operation between the connector C and its counterpart connector (not shown) can be easily performed.

  In addition, by simply winding the spiral tube 10 around the outer circumference of the trunk line Wa, it is possible to simultaneously restrain the trunk line Wa and loosely restrain the lead-out part (base end part) of the branch line Wb. Costs can be reduced by reducing the number of tape parts and wrapping work. Further, since only the spiral tube 10 is used, unlike the case of tape winding, it is easy to disassemble later, and since it is a one-part configuration and easy to separate, the recyclability is improved. Further, since the branch line Wb is merely moved by utilizing the spread of the slit 12 of the spiral tube 10, the overall length of the wire harness W is not affected, and the quality can be maintained at that point.

  FIGS. 2A to 2C are explanatory views of a method for producing a wire harness when there are two branch portions M. FIG. In this case, first, as shown in FIG. 2A, the wire bundle of the wire harness is placed on the routing jig 1, and the branch line Wb is branched from the trunk line Wa of the wire bundle. C is a connector. Next, in this state, as shown in FIG. 2B, the peripheral wall 11 in which the spiral slit 12 of the soft resin spiral tube 10 is formed is wound around the trunk line Wa while being rotated. The branch line Wb is pulled out from 12. And the wire harness which has the two branch parts M is completed by winding the spiral tube 10 to the last. In the wire harness thus completed, the same effect as described above can be exhibited.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, number, location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

It is a figure which shows the structure of embodiment of the branch structure of the wire harness which concerns on this invention, Comprising: Fig.1 (a) is a perspective view which shows the state before moving a branch line, FIG.1 (b) moves a branch line. FIG. 2 (a) to 2 (c) are explanatory views illustrating the method of manufacturing the wire harness when there are two branch portions in order. It is a figure which shows the branch structure of the conventional wire harness, Comprising: Fig.3 (a) is a perspective view which shows the state before tape winding, and FIG.3 (b) is a perspective view which shows the state wound with tape.

Explanation of symbols

10: Spiral tube 11: Peripheral wall 12: Slit W: Wire harness Wa: Trunk line Wb: Branch line M: Branch part

Claims (2)

  A spiral tube made of a soft resin having a spiral slit formed on the peripheral wall is placed on the outer periphery of the trunk line of the wire harness, and a branch line branched from the trunk line is drawn out from the slit of the spiral tube. Branch structure of wire harness to be used.   A branch line is branched from the trunk line placed on the routing jig, and in that state, a spiral tube made of a soft resin having a spiral slit formed on the peripheral wall is wound around the trunk line, and the branch is made from the slit. A method for producing a branch portion of a wire harness, wherein the wire is drawn out.

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