JP2019195243A - Exterior sheet and electric wire with the same - Google Patents

Abstract

To make it possible to neatly wind an exterior sheet to an electric wire without using a pre-deformed exterior sheet.SOLUTION: An exterior sheet 30 is wound about an electric wire (for example, a wire bundle 22). The exterior sheet 30 includes a sheet body 32 that can be wound about the electric wire (for example, the wire bundle 22) and an electric wire position indication mark 34 that is provided on one major surface of the sheet body 32. The sheet body 32 may be formed in a rectangular shape. The wire position indication mark 34 may be provided at a center position in a width direction of the sheet body 32.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an exterior sheet wound around an electric wire.

  In order to wind the exterior sheet around the wire neatly, it is preferable to arrange the electrical wire in a fixed posture with respect to the exterior sheet.

  Patent document 1 is disclosing the rectangular covering sheet previously folded over the full length of the longitudinal direction so that the both edges of the width direction may become mutually parallel. The covering sheet is wound around the outer periphery of the wire bundle disposed inside the bent portion.

  In patent document 1, the longitudinal direction of an electric wire bundle and the longitudinal direction of a coating sheet can be made to correspond by arrange | positioning an electric wire bundle inside the bending part of a coating sheet.

JP 2006-253080 A

  However, according to Patent Document 1, it is necessary to prepare a rectangular covering sheet that 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. For this reason, a processing step for deforming the sheet in advance is required.

  Then, an object of this invention is to make it possible to wind an exterior sheet around an electric wire neatly without using an exterior sheet deformed in advance.

  In order to solve the above-described problem, a first aspect is an exterior sheet that is wound around an electric wire, and a sheet main body that can be wound around the electric wire, and an electric wire position indication mark provided on one main surface of the sheet main body. And comprising.

  A second aspect is an exterior sheet according to the first aspect, wherein the sheet main body is formed in a rectangular shape, and the electric wire position indicating mark is provided at a center position in the width direction of the sheet main body. It is.

  A 3rd aspect is an exterior sheet which concerns on a 1st or 2nd aspect, Comprising: The end side mark provided in the width direction both ends of the said sheet | seat main body is further provided.

  A 4th aspect is an exterior sheet | seat which concerns on any one 1st to 3rd aspect, Comprising: The said mark for electric wire position directions contains the mark which adheres or adhere | attaches on the said electric wire.

  A fifth aspect is an exterior sheet according to any one of the first to fourth aspects, in which a convex portion for preventing electric wire slip is formed on one main surface of the sheet main body.

  A sixth aspect is an exterior sheet according to the fifth aspect, wherein the convex portion for preventing the electric wire slip includes a convex portion sandwiching the electric wire in a state where the sheet main body is wound around the electric wire. It is a waste.

  A 7th aspect is an electric wire with an exterior sheet | seat provided with an electric wire and the exterior sheet | seat which concerns on any one 1st-6th aspect wound around the said electric wire.

  According to the 1st aspect, an electric wire can be arrange | positioned on a sheet | seat main body using the mark for electric wire position directions as a clue, and a sheet | seat main body can be wound around an electric wire in this state. For this reason, an exterior sheet is wound around an electric wire neatly without using an exterior sheet deformed beforehand.

  According to the 2nd aspect, a sheet | seat main body can be wound neatly around an electric wire in the state which has arrange | positioned the electric wire in the width direction center of an exterior sheet | seat.

  According to the 3rd aspect, an end side mark can be utilized as a mark at the time of bonding the width direction both ends of an exterior sheet | seat, for example, when mounting an exterior sheet | seat on the jig | tool for winding operation | work.

  According to the fourth aspect, in the state where the sheet main body is wound around the electric wire, the wire position indicating mark that adheres or adheres to the electric wire adheres to or adheres to the electric wire, so that the exterior sheet is hardly displaced along the longitudinal direction of the electric wire. .

  According to the 5th aspect, an exterior sheet | seat can be made hard to shift | deviate along the longitudinal direction of an electric wire with the convex part for electric wire slip prevention.

  According to the 6th aspect, the convex part for electric wire slip prevention can make an exterior sheet difficult to shift | deviate along the longitudinal direction of an electric wire by pinching an electric wire in the state by which the sheet | seat main body was wound around the electric wire. .

  According to the 7th aspect, the electric wire with an exterior sheet | seat by which the exterior sheet | seat was wound neatly with respect to the electric wire can be obtained.

It is a schematic perspective view which shows the electric wire with an exterior sheet | seat which concerns on embodiment. It is a figure which shows the state which expand | deployed the exterior sheet. It is explanatory drawing which shows the manufacturing process of an electric wire with an exterior sheet. It is explanatory drawing which shows the manufacturing process of an electric wire with an exterior sheet. It is explanatory drawing which shows the manufacturing process of an electric wire with an exterior sheet. It is explanatory drawing which shows the manufacturing process of an electric wire with an exterior sheet. It is a figure which shows the state which expand | deployed the exterior sheet which concerns on a 1st modification. It is explanatory drawing which shows the contact state of an exterior sheet | seat same as the above and an electric wire bundle. It is a figure which shows the state which expand | deployed the exterior sheet which concerns on a 2nd modification. It is explanatory drawing which shows the contact state of an exterior sheet | seat same as the above and an electric wire bundle.

  Hereinafter, the electric wire with an exterior sheet and an exterior sheet concerning an embodiment are explained. FIG. 1 is a schematic perspective view showing an electric wire 10 with an exterior sheet, and FIG. 2 is a view showing a state in which the exterior sheet 30 is developed.

  The outer sheet-attached electric wire 10 includes an electric wire 20 and an outer sheet 30.

  The electric wire 20 includes a core wire and a coating formed around the core wire. The core wire is formed in a linear shape from a conductive material such as copper, copper alloy, aluminum, or aluminum alloy. Here, the core wire has a configuration in which a plurality of strands are twisted together. The core wire may be composed of a single wire. The coating is formed by extruding an insulating resin material around the core wire by an extrusion device or the like. A connector or the like is connected to the end of the electric wire 20. The electric wire 20 is connected to various electric devices mounted on the vehicle or the like via a connector or the like in a state where the electric wire 20 is arranged at an arrangement target location of the vehicle or the like. And it is used as a wiring member which electrically connects various electric equipments.

  It is sufficient that at least one electric wire 20 is included. In the present embodiment, a case will be described in which the outer sheet-attached electric wire 10 includes an electric wire bundle 22 including a plurality of electric wires 20. The case where the wire bundle 22 is a part of a wire harness is assumed.

  The exterior sheet 30 is wound around the wire bundle 22. The exterior sheet 30 includes a sheet body 32 and a wire position indication mark 34.

  The sheet main body 32 is formed in a sheet shape having an extent that can be wound around the wire bundle 22. Here, the sheet body 32 is formed in a rectangular shape. The sheet body 32 does not have to be rectangular, and may be formed in a trapezoidal shape or the like.

  The width dimension of the sheet body 32 is set to a size exceeding the circumferential length of the wire bundle 22. Here, the width dimension of the sheet body 32 is set to a size obtained by adding the widths of the overlapping portions at both ends to the circumferential length of the wire bundle 22. The sheet main body 32 may be set to a width dimension that can be wound around the electric wire bundle 22 over one turn. The length dimension of the sheet body 32 is arbitrarily set according to the length of the portion of the wire bundle 22 that is required to be protected.

  The sheet body 32 is made of a resin sheet that is flexible enough to be wound around the wire bundle 22 such as a PP (polypropylene) sheet, a PVC (polyvinyl chloride) sheet, or a PET (polyethylene terephthalate) sheet. As will be described later, when both end portions in the width direction of the sheet main body 32 are thermally welded, the sheet main body 32 is preferably formed of a thermoplastic resin such as PP, PVC, PET, or the like.

  The electric wire position indicating mark 34 is a mark indicating a position where the electric wire bundle 22 should be disposed on the sheet main body 32 when the sheet main body 32 is wound around the electric wire bundle 22. It is provided in a straight line.

  In the present embodiment, the electric wire position indicating mark 34 is provided at the center position in the width direction of the sheet main body 32. In the state where the wire bundle 22 is placed along the center position in the width direction of the sheet main body 32, the sheet main body 32 is deformed so as to lift the both side portions of the sheet main body 32 and wrap the wire bundle 22. This is because it is assumed that the wire bundle 22 is wound around the wire bundle 22.

  The wire position indicating mark 34 may be provided at a position deviated to one side from the center position in the width direction of the sheet main body 32. For example, in a state where the electric wire bundle 22 is disposed at a position closer to one side of the sheet main body 32, the electric wire bundle 22 is rolled together with one side of the sheet main body 32, and the sheet main body 32 is wound around the electric wire bundle 22. In such a case, the wire position indicating mark 34 may be provided at a position closer to one side of the seat body 32.

  The electric wire position indicating mark 34 may be provided as a mark that can be identified from other parts of the sheet main body 32. For example, the electric wire position indicating mark 34 can be formed by attaching ink of a color different from that of the sheet main body 32 to one main surface of the sheet main body 32.

  Here, the electric wire position indicating mark 34 is formed in a linear shape continuous in the longitudinal direction of the sheet main body 32. The electric wire position indicating mark 34 may be an intermittently continuous short line, round point, or the like that can be identified with respect to other portions of the sheet main body 32.

  The width of the wire position indicating mark 34 is arbitrary. With the electric wire bundle 22 placed on the sheet body 32, the electric wire position indication is made so that both sides of the electric wire position indication marks 34 protruding from both sides of the electric wire bundle 22 can be recognized from above the electric wire bundle 22. The width of the mark 34 may be set larger than the width of the wire bundle 22 (for example, about 1 mm to 10 mm larger).

  The electric wire position indicating mark 34 is preferably provided only on one main surface of the sheet main body 32. If the mark is also provided on the other main surface of the sheet body 32, the mark is observed from the outside in a state where the outer sheet 30 is wound around the wire bundle 22, and it is not preferable in appearance. However, the mark may also be provided on the other main surface of the sheet main body 32.

  The wire position indicating mark 34 may include a mark that adheres or adheres to the wire bundle 22.

  For example, a double-sided tape in which an adhesive layer is formed on both surfaces of the tape-like substrate may be adhered to one main surface of the sheet main body 32, and this may be used as the electric wire position indicating mark 34. If the double-sided tape itself is a color (for example, white) different from the color (for example, black) of the sheet body 32, the adhered double-sided tape can be recognized as the electric wire position indicating mark 34.

  In this case, if the electric wire bundle 22 is placed on the electric wire position indicating mark 34 of the sheet body 32 and the outer sheet 30 is wound around the electric wire bundle 22, the outer sheet 30 is connected to the electric wire via the electric wire position indicating mark 34. It is adhered to the outer periphery of the bundle 22. As a result, the exterior sheet 30 is less likely to be displaced in the longitudinal direction with respect to the wire bundle 22.

  Further, for example, a colorant such as a pigment may be mixed in the adhesive as necessary, and this may be applied to the exterior sheet 30 to form the electric wire position indicating mark 34. In this case, if the electric wire bundle 22 is placed on the electric wire position indicating mark 34 of the sheet body 32 and the outer sheet 30 is wound around the electric wire bundle 22, the outer sheet 30 is connected to the electric wire via the electric wire position indicating mark 34. Bonded to the outer periphery of the bundle 22. As a result, the exterior sheet 30 is less likely to be displaced in the longitudinal direction with respect to the wire bundle 22.

  Further, the adhesiveness indicated by the electric wire position indicating mark 34 may be generated by heating. For example, an adhesive such as a pigment may be mixed with the hot melt adhesive as necessary, and this may be applied to the exterior sheet 30 to form the electric wire position indicating mark 34. In this case, the electric wire bundle 22 is placed on the electric wire position indicating mark 34 of the sheet main body 32, and the exterior sheet 30 is wound around the electric wire bundle 22. If the portion of the exterior sheet 30 provided with the wire position indication mark 34 is heated before or after the exterior sheet 30 is wound around the wire bundle 22, the exterior sheet 30 is connected to the wire bundle 22 via the wire position indication mark 34. Bonded to the outer periphery. As a result, the exterior sheet 30 is less likely to be displaced in the longitudinal direction with respect to the wire bundle 22.

  In the present embodiment, end side marks 36 are provided at both ends in the width direction of the sheet main body 32. Here, linear end marks 36 are provided along the edges at both ends in the width direction of the sheet main body 32. The end mark 36 is provided without a gap with respect to the edges at both ends in the width direction of the sheet main body 32. The end side mark may be provided at a position where a gap is provided with respect to the edges at both ends in the width direction of the sheet main body 32. The end mark 36 may be omitted.

  The end side marks 36 are marks indicating the positions of both ends of the sheet body 32 in the width direction. By providing the end side marks 36 at both ends in the width direction of the sheet main body 32, it is easy to recognize the end of the sheet main body 32.

  The end side mark 36 may be provided as a mark that can be identified from other parts of the sheet main body 32. For example, the end mark 36 can be formed by attaching an ink of a color different from the color of the sheet main body 32 to one main surface of the sheet main body 32.

  The end mark 36 is formed in a linear shape continuous in the longitudinal direction of the sheet main body 32. The end mark 36 may be one in which short lines, round dots, etc. that can be identified with respect to other parts of the sheet main body 32 are intermittently continuous.

  The end side mark 36 may include a mark that adheres or adheres in the same manner as described with respect to the electric wire position indicating mark 34. In this case, the end side mark 36 can play a role of adhering or sticking both ends of the sheet main body 32 in the width direction.

  The example of a manufacturing method of the said electric wire 10 with an exterior sheet | seat is demonstrated.

  First, as shown in FIG. 3, the exterior sheet 30 is spread on the winding jig 50. Note that the thicknesses of the electric wire position indicating mark 34 and the end mark 36 shown in FIG. 3 and the like are exaggerated. The winding jig 50 is formed by extending a pair of winding plate portions 52 on both side portions of a rod-shaped portion 51 having a length dimension equal to or larger than the length dimension of the exterior sheet 30. The winding plate portion 52 can be extended in the horizontal direction while being supported by the rod-like portion 51, and is configured to be deformable so as to be wound around the wire bundle 22. As the winding plate portion 52, a resin plate or the like can be used. A heating part 53 capable of heating the exterior sheet 30 is provided at the tip of the winding plate part 52. The pair of heating units 53 at both ends are provided at positions corresponding to both ends in the width direction of the exterior sheet 30.

  The exterior sheet 30 is spread and placed on the winding jig 50. At this time, since the end-side marks 36 at both ends in the width direction of the exterior sheet 30 can be easily recognized, both ends of the exterior sheet 30 can be accurately arranged on the heating unit 53.

  Next, as shown in FIG. 4, the wire bundle 22 is arranged on the wire position indication mark 34 of the exterior sheet 30 along the wire position indication mark 34. As a result, the wire bundle 22 is placed in a fixed posture with respect to the exterior sheet 30.

  And as shown in FIG. 5, it moves to the direction which mutually approaches, raising both ends of a pair of winding board part 52 upward. Then, the exterior sheet 30 on the winding plate portion 52 is wound around the wire bundle 22 from both sides. Further, both ends of the exterior sheet 30 are sandwiched between the outer end portions of the winding plate portion 52. At this time, it is possible to easily confirm whether or not the ends of the exterior sheet 30 are shifted by observing the overlapping state of the pair of end side marks 36.

  Then, both ends of the exterior sheet 30 are thermally welded by the pair of heating units 53 in a state where both ends of the exterior sheet 30 are sandwiched by the pair of heating units 53 above the wire bundle 22. Thereby, the exterior sheet 30 is mounted in a state wound around the wire bundle 22.

  Thereafter, as shown in FIG. 6, when the pair of winding plate portions 52 are returned to the original positions, the wire bundle 22 around which the outer sheet 30 is wound remains on the winding jig 50, and the outer sheet-attached electric wire 10. Is manufactured.

  The winding operation of the exterior sheet 30 may be performed manually by an operator, or may be performed by an automatic machine device such as a robot. When performed by an operator, the above-described operation can be easily performed because the electric wire position indicating mark 34 and the end mark 36 are easily visible. When the automatic machine device is used, the above-mentioned wire position indication mark 34 and end-side mark 36 are imaged by the imaging device, and the corresponding color extraction processing or the like is executed, so that each position can be easily recognized. .

  According to the outer sheet-attached electric wire 10 and the outer sheet 30 configured as described above, the electric wire bundle 22 can be arranged on the sheet main body 32 using the electric wire position indicating mark 34 provided on the sheet main body 32 as a clue. . For this reason, it is easy to arrange the electric wire bundle 22 at a certain accurate position with respect to the sheet main body 32. For example, it is easy to arrange the wire bundle 22 in a posture parallel to both side edges of the sheet main body 32. In this state, the sheet main body 32 can be wound around the wire bundle 22. For this reason, as in Patent Document 1, the exterior sheet 30 can be neatly wound around the wire bundle 22 without using a previously deformed exterior sheet.

  Further, since the wire position indicating mark 34 is provided at the center position in the width direction of the exterior sheet 30, the both ends of the exterior sheet 30 are held with the wire bundle 22 disposed at the center in the width direction of the exterior sheet 30. It is possible to wind the outer sheet 30 neatly around the electric wire bundle 22 by winding it around the electric wire bundle 22.

  Further, since the end mark 36 is provided at both ends of the sheet main body 32, the end mark 36 is used as a mark when the exterior sheet 30 is placed on the jig 50, and both ends in the width direction of the exterior sheet 30. It can be used as a mark for bonding, and the exterior sheet 30 can be wound around the wire bundle 22 more neatly.

  Further, if the wire position indicating mark 34 is adhered or adhered to the wire bundle 22, the exterior sheet 30 is connected to the electric wire via the wire position indicating mark 34 in a state where the sheet body 32 is wound around the wire bundle 22. Since it adheres or adheres to the bundle 22, the exterior sheet 30 becomes difficult to shift along the longitudinal direction of the wire bundle 22. Thereby, it is not necessary to wrap an adhesive tape for preventing displacement from the end of the exterior sheet to the wire bundle. But the adhesive tape for position shift prevention may be wound.

  7 and 8, even if a protrusion 133 for preventing electric wire slip is formed on one main surface of the sheet main body 132 corresponding to the sheet main body 32, as in the exterior sheet 130 according to the first modification shown in FIGS. 7 and 8. Good. 7 is a development view of the exterior sheet 130, and FIG. 8 is a view showing a state in which the convex portion 133 and the wire bundle 22 are in contact with each other in a cross section along the longitudinal direction of the wire bundle 22.

  Here, a plurality of round protrusions 133 are formed on one main surface of the sheet main body 132. For this reason, when the exterior sheet 130 is wound around the wire bundle 22, the inner surface of the exterior sheet 130 partially contacts the outer peripheral surface of the wire bundle 22. Then, the convex part 133 of the exterior sheet 130 comes into contact with the wire bundle 22 with a relatively large force, and the exterior sheet 130 is difficult to be displaced in the longitudinal direction of the wire bundle 22. As a result, it is possible to delete an adhesive tape or the like for preventing displacement of the end portion of the exterior sheet.

  Moreover, even if the convex part 233 for electric wire slip prevention is formed in one main surface of the sheet | seat main body 232 corresponding to the sheet | seat main body 32 like the exterior sheet 230 which concerns on the 2nd modification shown in FIG.9 and FIG.10. Good. 9 shows a development view of the exterior sheet 130, and FIG. 8 is a view showing a state in which the convex portion 233 and the wire bundle 22 are in contact with each other in a cross section orthogonal to the longitudinal direction of the wire bundle 22. .

  Here, a plurality of linear convex portions 233 are formed along the longitudinal direction of the sheet main body 132. There are gaps between the plurality of convex portions 233. The gap is preferably about the same as the diameter of the electric wire 20, smaller (slightly smaller) than the diameter, or larger (slightly larger) than the diameter. When the exterior sheet 230 is wound around the wire bundle 22, the convex portion 233 enters the gaps between the plurality of wires 20. Comparing the state in which the exterior sheet 230 is developed in a flat shape and the state in which the exterior sheet 230 is wound around the wire bundle 22, the distance between the convex portions 233 is smaller in the latter case than in the former case. For this reason, by winding the exterior sheet 230 around the electric wire bundle 22, the electric wire 20 entering the gap is sandwiched between the adjacent convex portions 233. In order to make the pinching by the plurality of convex portions 233 more reliable, the protruding dimension of the convex portion 233 is preferably equal to or larger than the radius of the electric wire 20.

  As a result, the exterior sheet 130 is less likely to be displaced in the longitudinal direction of the wire bundle 22. As a result, it is possible to delete an adhesive tape or the like for preventing displacement of the end portion of the exterior sheet.

{Modifications}
In the above embodiment, both ends of the exterior sheet 30 are thermally welded, but may be joined by ultrasonic bonding, double-sided tape, or the like. Further, an adhesive tape may be wound around the exterior sheet 30 to keep the wound state of the exterior sheet 30.

  In addition, each structure demonstrated in the said embodiment and each modification can be suitably combined unless it mutually contradicts.

  As described above, the present invention has been described in detail. However, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Electric wire with exterior sheet 20 Electric wire 22 Electric wire bundle 30, 130, 230 Exterior sheet 32, 132, 232 Sheet main body 34 Electric wire position indication mark 36 End side mark 133, 233 Projection

Claims (7)

An exterior sheet wound around an electric wire,
A sheet body that can be wound around an electric wire;
An electric wire position indicating mark provided on one main surface of the sheet body;
The exterior sheet | seat provided with. The exterior sheet according to claim 1,
The sheet body is formed in a rectangular shape,
The electric wire position indicating mark is an exterior sheet provided at a central position in the width direction of the sheet main body. The exterior sheet according to claim 1 or 2,
The exterior sheet | seat further provided with the end side mark provided in the width direction both ends of the said sheet | seat main body. The exterior sheet according to any one of claims 1 to 3,
The electric wire position indicating mark is an exterior sheet including a mark that adheres or adheres to the electric wire. The exterior sheet according to any one of claims 1 to 4,
The exterior sheet | seat in which the convex part for electric wire slip prevention is formed in the one main surface of the said sheet | seat main body. The exterior sheet according to claim 5,
The convex portion for preventing electric wire slip is an exterior sheet including a convex portion sandwiching the electric wire in a state where the sheet main body is wound around the electric wire. Electric wires,
The exterior sheet according to any one of claims 1 to 6, wound around the electric wire,
An electric wire with an exterior sheet.

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