JP2006253080A - Wire harness and manufacturing method of the wire harness - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wire harness composed by tidily and efficiently winding a covering sheet around the circumference of a wire bundle, appropriate in quality and hardly causing dispersion, and to provide a manufacturing method for the wire harness. <P>SOLUTION: This wire harness is provided with the wire bundle 10 obtained by bundling a plurality of wires 11, and the rectangular covering sheet 13 wound around the circumference of the wire bundle 10. The covering sheet 13 is previously bent extending to the entire length in the longitudinal direction so as to set both edges 13a and 13b of its cross direction parallel to each other, and is wound around the circumference of the wire bundle 10 that is arranged in the inside of the folded part 13d. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a wire harness used for wiring for a vehicle such as an automobile and a manufacturing method thereof.

  In a wire harness used for wiring for a vehicle such as an automobile, a plurality of electric wires are bundled according to an assembling shape in order to improve the assembling property to the car body when the electric wires are routed to the car body. And the coating | coated which has outer-shell armor property (abrasion resistance), waterproofness, and insulation is formed in the outer periphery of this electric wire bundle.

  Conventionally, a method of winding an insulating vinyl tape around the outer periphery of a wire bundle has been used to form the coating, but the operation of winding the insulating vinyl tape around the entire outer periphery of a long wire bundle has been complicated. . Then, the method of forming a coating | cover efficiently on the outer periphery of an electric wire bundle is proposed (for example, refer patent document 1).

As shown in FIG. 5, the method for forming a coating disclosed in Patent Document 1 includes a semi-rigid resin sheet 1 having a foam layer laminated on a wall surface of a cavity 3a formed on a lower mold 2a. Then, the electric wire bundle 4 is arranged on the sheet 1 positioned in the cavity 3a. Then, the upper mold 2b is placed on the lower mold 2a while the remaining portion of the sheet 1 protruding from the cavity 3a is attached to the wall surface of the cavity 3b of the upper mold 2b. And the lower mold | type 2a and the upper mold | type 2b are heated, the foaming material of the sheet | seat 1 is foamed, and coating | cover is formed in the outer periphery of the wire bundle 4. FIG.
JP-A-1-206515

  However, as shown in FIG. 6, when the sheet 1 is positioned in the cavity 3 a of the lower mold 2 a and also when the sheet 1 is attached to the wall surface of the cavity 3 a by manual operation by an operator or automatic operation by a machine. In addition, the positional deviation of the sheet 1 in the lower mold 2a and the angular deviation indicated by the symbol α in the figure are likely to occur.

  For example, when the sheet 1 is wound around the outer periphery of the wire bundle 4 with the angular deviation still occurring, both end edges 1a and 1b of the sheet 1 are inclined as shown in FIGS. 7 (a) and 7 (b). , The seams are staggered and it doesn't look good. As a result, the quality of the wire harness W is deteriorated.

  And in order to prevent the quality of the wire harness W from deteriorating, the operator must be very careful about the positioning of the sheet 1 in the lower mold 2a, in other words, the relative posture of the sheet 1 with respect to the wire bundle 4. There is an adverse effect that the work efficiency is lowered, and the quality of the wire harness W varies depending on the skill level of the worker.

  The present invention has been made in view of the above-described problems, and the object thereof is to manufacture a wire harness and a wire harness with good quality and less variation by winding a covering sheet neatly and efficiently around the outer periphery of a bundle of wires. It is to provide a method.

  In order to achieve the above object, a wire harness according to the present invention is characterized by the following (1) and (2).

(1) A wire harness including an electric wire bundle in which a plurality of electric wires are bundled and a rectangular covering sheet wound around the outer periphery of the electric wire bundle, wherein the covering sheet is in the width direction. It is previously bent over the entire length in the longitudinal direction so that both end edges are parallel to each other, and is wound around the outer periphery of the wire bundle disposed inside the bent portion.
(2) In the wire harness described in the above (1), the covering sheet is previously bent at the center in the width direction over the entire length in the longitudinal direction so that both end edges in the width direction coincide with each other.

  In the wire harness having the configuration (1), the covering sheet is bent in advance over the entire length in the longitudinal direction so that both end edges in the width direction are parallel to each other. By arranging the electric wire bundle inside the bent portion of the covering sheet, the longitudinal direction of the electric wire bundle coincides with the longitudinal direction of the covering sheet, and the relative posture of the covering sheet with respect to the electric wire bundle naturally aligns. And since the covering sheet is bent over the entire length in the longitudinal direction so that both end edges in the width direction are parallel to each other, both end edges of the covering sheet are inclined when the covering sheet is wound around the outer periphery of the wire bundle. The seams will be aligned without any problems. That is, the covering sheet can be wound around the outer periphery of the wire bundle neatly and efficiently. Therefore, the quality of the wire harness can be improved and the variation can be reduced.

  And in the wire harness of the structure of said (2), the center part of the width direction is previously bent over the full length of the longitudinal direction so that the both ends edge of the width direction may mutually correspond. According to this, when arrange | positioning an electric wire bundle inside the bending part of a coating sheet, the directivity of the coating sheet with respect to an electric wire bundle is lose | eliminated, and workability | operativity can be improved. Examples of such a covering sheet include a substantially V-shaped or U-shaped sheet in a cross section perpendicular to the longitudinal direction.

  Moreover, in order to achieve said objective, the manufacturing method of the wire harness which concerns on this invention is characterized by the following (3)-(5).

(3) A method for manufacturing a wire harness, comprising: a wire bundle in which a plurality of wires are bundled; and a rectangular covering sheet wound around the outer periphery of the wire bundle, the width direction of the covering sheet The covering sheet is previously folded over the entire length in the longitudinal direction so that both end edges of the covering sheet are parallel to each other, the wire bundle is disposed inside the bent portion of the covering sheet, and the covering sheet is disposed on the outer periphery of the wire bundle. Wrap around.
(4) In the method for manufacturing the wire harness according to (3), the covering sheet is bent in advance over the entire length in the longitudinal direction so that both end edges in the width direction of the covering sheet coincide with each other.
(5) In the method for manufacturing the wire harness according to any one of (3) and (4), a concave groove corresponding to a cross-sectional shape of a bent portion of the covering sheet is formed in the base, and the concave of the base is formed. The wire bundle is arranged inside the bent portion of the covering sheet in a state where the bent portion of the covering sheet is fitted in the groove, and the covering sheet is wound around the outer periphery of the wire bundle.

  According to the method of manufacturing the wire harness having the configuration (3), the electric wire bundle is arranged inside the folded portion of the covering sheet that is folded in advance over the entire length in the longitudinal direction so that both end edges in the width direction are parallel to each other. Thereby, the longitudinal direction of the electric wire bundle and the longitudinal direction of the covering sheet can be matched, and the relative posture of the covering sheet with respect to the electric wire bundle can be naturally aligned. And since the covering sheet is bent over the entire length in the longitudinal direction so that both end edges in the width direction are parallel to each other, when the covering sheet is wound around the outer periphery of the wire bundle, the both end edges of the covering sheet are inclined. The seams can be aligned without any problems. That is, the covering sheet can be wound around the outer periphery of the wire bundle neatly and efficiently. Therefore, the quality of the wire harness can be improved and the variation can be reduced.

  According to the method of manufacturing the wire harness having the configuration of (4) above, the wire bundle is obtained by bending the covering sheet in advance at the center in the width direction over the entire length in the longitudinal direction so that both end edges in the width direction coincide with each other. Is disposed inside the bent portion of the covering sheet, the directionality of the covering sheet with respect to the wire bundle is lost, and the workability can be improved.

  According to the method of manufacturing the wire harness having the configuration (5), the concave groove of the base is formed corresponding to the cross-sectional shape of the bent portion of the covering sheet, and the bent portion of the covering sheet is fitted into the concave groove. Accordingly, the positioning of the covering sheet on the base can be facilitated, and the posture of the covering sheet can be stabilized. Thereby, it is not necessary to hold the covering sheet, and the operator can freely use both hands, thereby improving the work efficiency.

  According to the wire harness and the method of manufacturing the wire harness according to the present invention, the covering sheet can be wound around the outer periphery of the wire bundle neatly and efficiently, and the quality of the wire harness is good and has little variation. it can.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a wire harness covering structure and a covering molding method according to the present invention will be described in detail with reference to the drawings.

(First embodiment)
FIG. 1 is a perspective view showing a first embodiment of a wire harness and a method of manufacturing the wire harness according to the present invention, and FIG. 2 is a perspective view of a covering sheet used in the method of manufacturing the wire harness shown in FIG.

  As shown in FIG. 1, a wire bundle 10 is formed by bundling a plurality of wires 11 in accordance with the assembled shape so as to improve the assembly property to the vehicle body when the wires are routed to the vehicle body. Are connected with a connection terminal and a connector 12.

  A covering sheet 13 having a rectangular shape in plan view is wound around the outer periphery of the electric wire bundle 10 for each important point. The cover sheet 13 is bent in advance in the center in the width direction over the entire length in the longitudinal direction so that both end edges 13a and 13b in the width direction coincide with each other, and is formed into a substantially V shape in a cross section perpendicular to the length direction. ing. Such a covering sheet 13 is formed by cutting along a cutting line C with a required length dimension L from a roll 14 formed by winding a covering sheet having a substantially V-shaped cross section.

  The covering sheet 13 is preferably formed from a soft or semi-rigid material having waterproofness and insulation, such as polyvinyl, polyethylene, polyurethane, silicone rubber, fluororesin, olefin elastomer, and the like. The covering sheet 13 also functions as a protective material for preventing damage to the electric wire bundle 10 due to contact between the electric wire bundle 10 and other components when the wire harness is routed to the vehicle body.

  In the method for manufacturing the wire harness of the present embodiment, the base 20 on which the covering sheet 13 is placed when the covering sheet 13 is wound around the outer periphery of the wire bundle 10 is used. The base 20 has a length dimension larger than that of the covering sheet 13, and a concave groove 21 having a substantially V-shaped cross section corresponding to the cross-sectional shape of the covering sheet 13 is engraved on the upper surface thereof over the entire length in the longitudinal direction. ing.

  When winding the covering sheet 13 around the outer periphery of the electric wire bundle 10, first, the covering sheet 13 is placed on the base 20 so that the bent portion (substantially V-shaped bottom portion) 13 d of the covering sheet 13 is fitted in the concave groove 21. Placed. By aligning the bent portion 13d of the covering sheet 13 with the concave groove 21 of the base 20, the covering sheet 13 is accurately positioned on the base 20, and the covering sheet 13 is stably held by the base 20. . Thereby, the operator does not have to pay extra attention to the positional deviation and the angular deviation of the covering sheet 13 with respect to the base 20.

  Subsequently, the wire bundle 10 is disposed inside the bent portion 13 d of the covering sheet 13. The longitudinal direction of the wire bundle 10 coincides with the longitudinal direction of the covering sheet 13 so that the relative posture of the covering sheet 13 with respect to the wire bundle 10 is naturally aligned.

  Subsequently, the covering sheet 13 is wound around the outer periphery of the wire bundle 10. Since the longitudinal direction of the wire bundle 10 and the longitudinal direction of the covering sheet 13 coincide with each other, and the covering sheet 13 is bent over the entire length in the longitudinal direction so that both end edges 13a and 13b in the width direction thereof coincide with each other. , The joints of both end edges 13a and 13b are aligned.

  In this state, both edge 13a, 13b is adhere | attached, for example using an adhesive agent, and it is set as a wire harness. The covering sheet 13 is stably held by the base 20, so that the operator does not need to hold the covering sheet 13 and can use both hands freely. In addition, you may form the adhesion layer previously by apply | coating an adhesive etc. to the inner surface (surface on the side which contacts the outer periphery to the wire bundle 10) 13c of the coating sheet 13. FIG. According to this, when the electric wire bundle 10 is disposed inside the bent portion 13d of the covering sheet 13, the adhesive layer of the inner surface 13c adheres to the outer peripheral surface of the electric wire bundle 10, and the covering sheet 13 has a longitudinal direction in the electric wire. This is preferable because it is fixed to the wire bundle 10 in an appropriate relative posture that coincides with the longitudinal direction of the bundle 10. In addition, an appropriate means, such as sticking a non-adhesive film etc. on the surface of the adhesive layer, is taken and the adhesive layer adheres to another member or itself before being wound around the outer periphery of the wire bundle 10. It is good to prevent this.

  According to the wire harness and the method for manufacturing the wire harness of the present embodiment, the covering sheet 13 is bent in advance over the entire length in the longitudinal direction so that both end edges 13a and 13b in the width direction are parallel to each other. By arranging the wire bundle 10 inside the bent portion 13d, the longitudinal direction of the wire bundle 10 and the longitudinal direction of the covering sheet 13 can be matched to naturally align the relative posture of the covering sheet 13 with respect to the wire bundle 10. it can. And since the covering sheet 13 is bent over the entire length in the longitudinal direction so that both end edges 13a and 13b in the width direction are parallel to each other, when the covering sheet 13 is wound around the outer periphery of the wire bundle 10, both end edges The seams 13a and 13b can be aligned without tilting. Thereby, the coating sheet 13 can be wound around the outer periphery of the wire bundle 10 neatly and efficiently, and the quality of the wire harness can be made good and less uneven.

  And since the covering sheet 13 is previously bent over the entire length in the longitudinal direction so that both end edges in the width direction coincide with each other, the wire bundle 10 is placed inside the bent portion 13d of the covering sheet 13. When arrange | positioning, the directivity of the coating sheet 13 with respect to the electric wire bundle 10 can be eliminated, and workability | operativity can be improved.

  Further, the concave groove 21 of the base 20 is formed corresponding to the cross-sectional shape of the bent portion 13d of the covering sheet 13, and the bent portion 13d of the covering sheet 13 is fitted into the concave groove 21, thereby covering the base 20 with the covering. The positioning of the sheet 13 can be facilitated, and further, the posture of the covering sheet 13 can be stabilized. Thereby, it is not necessary to hold the covering sheet 13, and the operator can freely use both hands, thereby improving work efficiency.

(Second Embodiment)
Next, with reference to FIG. 3 and FIG. 4, 2nd Embodiment of the manufacturing method of the wire harness which concerns on this invention, and a wire harness is described.
FIG. 3 is a perspective view showing a second embodiment of the wire harness and the method of manufacturing the wire harness according to the present invention, and FIG. 4 is a perspective view of a covering sheet used in the method of manufacturing the wire harness shown in FIG. In addition, about the member which is common in 1st Embodiment mentioned above, description is abbreviate | omitted by attaching | subjecting the same or equivalent code | symbol.

  The covering sheet 33 of the present embodiment has a widthwise central portion bent in advance over the entire length in the longitudinal direction so that both end edges 33a and 33b in the width direction coincide with each other, and is substantially U in a cross section perpendicular to the longitudinal direction. It is molded into a letter shape. Such a covering sheet 33 is formed, for example, by cutting along a cutting line C at a required length L from a roll 34 formed by winding a covering sheet having a substantially U-shaped cross section. As the material of the covering sheet 33, the same material as the covering sheet 13 of the first embodiment described above can be used.

  In the manufacturing method of the wire harness of this embodiment, the base 40 on which the covering sheet 33 is placed when the covering sheet 33 is wound around the outer periphery of the wire bundle 10 is used. The base 40 has a length dimension larger than that of the covering sheet 33, and a concave groove 41 having a substantially U-shaped cross section corresponding to the sectional shape of the covering sheet 33 is engraved on the upper surface thereof over the entire length in the longitudinal direction. ing.

  When winding the covering sheet 33 around the outer periphery of the wire bundle 10, first, the covering sheet 33 is attached to the base 40 so that the bent portion (substantially U-shaped bottom) 33 d of the covering sheet 33 is fitted into the groove 41. Placed. By aligning the bent portion 33d of the covering sheet 33 with the concave groove 41 of the base 40, the covering sheet 33 is accurately positioned on the base 40, and the covering sheet 33 is stably held by the base 40. . Thereby, the operator does not have to pay extra attention to the positional deviation or the angular deviation of the covering sheet 33 with respect to the base 40.

  Subsequently, the electric wire bundle 10 is disposed inside the bent portion 33 d of the covering sheet 33. The longitudinal direction of the wire bundle 10 and the longitudinal direction of the covering sheet 33 coincide with each other, so that the relative posture of the covering sheet 33 with respect to the wire bundle 10 is naturally aligned.

  Subsequently, the covering sheet 33 is wound around the outer periphery of the wire bundle 10. Since the longitudinal direction of the wire bundle 10 and the longitudinal direction of the covering sheet 33 coincide with each other, and the covering sheet 33 is bent over the entire length in the longitudinal direction so that both end edges 33a and 33b in the width direction thereof coincide with each other. , The joints of both end edges 33a and 33b are aligned.

  In this state, both end edges 33a and 33b are bonded using, for example, an adhesive to form a wire harness. The covering sheet 33 is stably held by the base 40. Therefore, the operator does not need to hold the covering sheet 33 and can use both hands freely. As in the first embodiment described above, an adhesive layer may be formed in advance on the inner surface of the covering sheet 33.

  Since the operations and effects of the wire harness and the wire harness manufacturing method of the present embodiment are the same as those of the first embodiment described above, the description thereof is omitted.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably.

  For example, in the first and second embodiments described above, the method of manufacturing the wire harness using the bases 20 and 40 has been described. However, in the method of manufacturing the wire harness according to the present invention, the operator applies the covering sheets 13 and 33. It can also be carried out by holding it directly by hand. In this case, the covering sheets 13 and 33 can be stably held by holding the bent portions 13d and 33d so as to follow the cross-sectional shape of the bent portions 13d and 33d of the covering sheets 13 and 33.

It is a perspective view which shows 1st Embodiment of the manufacturing method of the wire harness and wire harness which concern on this invention. It is a perspective view of the coating sheet used for the manufacturing method of the wire harness shown in FIG. It is a perspective view which shows 2nd Embodiment of the manufacturing method of the wire harness and wire harness which concern on this invention. It is a perspective view of the coating sheet used for the manufacturing method of the wire harness shown in FIG. It is a perspective view which shows the method of forming coating | cover on the outer periphery of an electric wire bundle in the manufacturing method of the conventional wire harness. It is a perspective view which shows the angle shift | offset | difference of a coating sheet in the manufacturing method of the conventional wire harness. (A), (b) is a perspective view which shows the wire harness by which the said covering sheet was wound around the outer periphery of the electric wire bundle, with the angle gap produced in the covering sheet.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Wire bundle 11 Electric wire 13 Cover sheet 13a, 13b Edge of width direction 13d Bending part 20 Base 21 Ditch | groove 33 Cover sheet 33a, 33b Edge of width direction 33d Bending part 40 Base 41 Ditch | groove

Claims (5)

A wire harness comprising an electric wire bundle in which a plurality of electric wires are bundled, and a rectangular covering sheet wound around the outer periphery of the electric wire bundle,
The covering sheet is previously folded over the entire length in the longitudinal direction so that both end edges in the width direction are parallel to each other, and is wound around the outer periphery of the wire bundle disposed inside the bent portion. A wire harness characterized by.   2. The wire harness according to claim 1, wherein the covering sheet is bent in advance in the center in the width direction over the entire length in the longitudinal direction so that both end edges in the width direction coincide with each other. A wire harness manufacturing method comprising: an electric wire bundle in which a plurality of electric wires are bundled; and a rectangular covering sheet wound around the outer periphery of the electric wire bundle,
The covering sheet is folded in advance over the entire length in the longitudinal direction so that both end edges in the width direction of the covering sheet are parallel to each other,
A method of manufacturing a wire harness, comprising: arranging the wire bundle inside a bent portion of the covering sheet, and winding the covering sheet around an outer periphery of the wire bundle.   The method for manufacturing a wire harness according to claim 3, wherein the covering sheet is bent in advance over the entire length in the longitudinal direction so that both end edges in the width direction of the covering sheet coincide with each other. Forming a groove corresponding to the cross-sectional shape of the bent portion of the covering sheet in the base,
Placing the wire bundle inside the bent portion of the covering sheet in a state where the bent portion of the covering sheet is fitted in the concave groove of the base, and winding the covering sheet around the outer periphery of the wire bundle. The method for manufacturing a wire harness according to claim 3, wherein the wire harness is manufactured according to claim 3.

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