JP2007030918A - Packaging sheet, wire harness assembly and mounting structure of packaging sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging sheet for protecting a wire harness which can correspond to many kinds of lengths of mounting object parts only preparing less kinds of dimensions. <P>SOLUTION: A stretchable/contractible sheet 11 is composed of a plain knitted and woven fabric of a warp bundle 11A and a weft bundle 11B. By making stitch directions A and B have an angle to a direction to be stretched and contracted, stretchability/contractibility are given in the transverse direction X and in the longitudinal direction Y. A rectangular shape having four sides along the transverse direction and the longitudinal direction is provided, and a pressure-sensitive adhesive 12 along one side is provided on one face in the vicinity of the one side along the transverse direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention mainly relates to a wire harness protection packaging sheet that protects a wire harness by being attached to the outer periphery of the wire harness, a wire harness assembly that is equipped with the packaging sheet, and a packaging sheet mounting structure. .

FIG. 5 shows a conventional packaging sheet for protecting a wire harness (see, for example, Patent Document 1). In this packaging sheet 100, an adhesive portion 102 is provided on one side edge of a rectangular flat sheet material 101, and the other end edge is attached to the adhesive portion 102 while being wrapped around the outer periphery of the wire harness W as shown in FIG. By covering, the wire harness W is protected.
Japanese Utility Model Publication No. 58-81990

  By the way, this type of packaging sheet for wire harness exterior is cut to a certain length, and corresponds to the lengths L1 and L2 of the mounting target portion on the wire harness W side as shown in FIG. What had to be cut to lengths L1 and L2 had to be prepared and mounted. The length of the part to be mounted on the side of the wire harness has many kinds, and in order to cope with it, it is necessary to prepare many kinds of sheets having different lengths, and production management is complicated. In addition, since it is manually attached, there is a risk that a sheet having a different length may be attached by mistake, which causes a problem in quality control.

  In consideration of the above circumstances, the present invention is equipped with a packaging sheet that can be properly mounted while adjusting the length at the time of mounting on a wire harness or the like, by simply preparing a small number of dimensions, and mounting the packaging sheet It aims at providing the mounting structure of a wire harness assembly and a packaging sheet.

  The packaging sheet of the invention of claim 1 is a sheet-like object such as a knitted fabric or a non-woven fabric made of fibers, and a first direction having an angle with respect to a direction to be expanded and contracted and a second direction substantially orthogonal thereto. By arranging the direction of the fiber in the direction, it is characterized by having elasticity in the horizontal direction and the vertical direction.

  The invention of claim 2 is the packaging sheet according to claim 1, wherein a bundle of belt-like yarns in which a plurality of yarns are arranged in one row or a plurality of rows, as a warp yarn (warp yarn) bundle and a weft yarn (weft yarn) bundle, The warp yarn bundle and the weft yarn bundle are knitted into a plain weave, respectively arranged in the first direction and the second direction.

  Invention of Claim 3 is the packaging sheet of Claim 1 or 2, Comprising: The rectangular shape which has the four sides along the said horizontal direction and the vertical direction is comprised, and the vicinity of one side along the horizontal direction A pressure-sensitive adhesive is provided along one of the sides.

  Invention of Claim 4 is a packaging sheet in any one of Claims 1-3, Comprising: It is a sheet | seat for wire harness exteriors which protects a wire harness by mounting | wearing the outer periphery of a wire harness, To do.

  A wire harness assembly according to a fifth aspect of the present invention is the packaging sheet according to the fourth aspect, wherein the packaging sheet according to the fourth aspect is arranged along the axial direction of the wire harness and the vertical direction thereof along the circumferential direction of the wire harness. The wrapping sheet is wound around and fixed to the outer periphery of the wire harness in a state as it is or stretched according to the situation such as the shape or length of the mounting target portion of the wire harness to be wound.

  The mounting structure of the packaging sheet of the invention of claim 6 should be wound by arranging the packaging sheet according to any one of claims 1 to 3 so that the horizontal direction or the vertical direction thereof is along the longitudinal direction of the mounted member. The wrapping sheet is wound around and fixed to the outer periphery of the mounted member in a state as it is or expanded and contracted according to the situation such as the shape or length of the mounting target portion of the mounted member.

  According to the invention of claim 1, the direction in which the fibers constituting the sheet are aligned is set obliquely with respect to the horizontal direction and the vertical direction, which are the expansion and contraction directions. The direction is inclined in the direction in which the tension is applied, and the sheet extends in the horizontal direction and contracts in the vertical direction. In addition, when the sheet is pulled in the vertical direction, the sheet similarly extends in the vertical direction and contracts in the horizontal direction.

  Therefore, even if the sheet has the same dimensions, the horizontal or vertical dimension of the sheet can be freely changed by changing the inclination of the fiber due to the tension or compressive force. Even if there are many types of dimensions of the mounting target portion, it is possible to cope with a small number of types of sheets. And since the types of dimensions can be reduced, it is possible to improve production management when manufacturing and mounting a sheet, and to reduce mistakes in wearing, thereby contributing to quality improvement.

  In addition, because it can exhibit elasticity, for example, when it is attached to a wire harness, it can secure the bendability of the wire harness and can also make it difficult to sag and wrinkle the sheet, resulting in good appearance Can be kept in.

  In addition, because the elasticity of the fiber is tilted by the tension, regardless of the elasticity of the material itself such as rubber, the dimensions can be maintained once expanded or contracted, unless another external force is applied. . That is, when the dimensions are changed by pulling, it can be attached to a wire harness or the like without applying an excessive force in the state as it is.

  According to the invention of claim 2, a bundle of band-like yarns in which a plurality of yarns are arranged in one or a plurality of rows is knitted into a plain weave as a warp (warp) bundle and a weft (weft) bundle, and the direction of the stitches is determined. Since the sheet is set obliquely with respect to the lateral and longitudinal directions of the sheet (that is, the warp and weft bundles are arranged in the first and second directions, respectively), the sheet is pulled in the lateral or longitudinal direction. When this occurs, the tension of the yarn tends to tilt in the direction in which the tension is applied, and as a result, the sheet tends to expand and contract.

  That is, when warp yarns and weft yarns are knitted into plain weaves one by one, the stitches become too tight and difficult to expand and contract, but a plurality of yarns are arranged in a row or a plurality of rows to form a belt-like bundle, and the warp yarn (warp yarn bundle) ) And weft yarns (weft yarn bundles) are knitted into a plain weave, so that play due to sliding of adjacent yarns can be secured, and the ease of tilting in the direction of the stitches can be secured by the play, As a result, good stretchability can be exhibited.

  According to the invention of claim 3, it is easily fixed to the outer periphery of the wire harness or the like by covering the other side with the adhesive provided on the one side of the sheet while being wound around the outer periphery of the wire harness or the like. Can do.

  According to invention of Claim 4, the elasticity can be effectively exhibited by using as an exterior material of a wire harness. In other words, when used as an exterior material for a wire harness, the length or length of the seat on the wire harness side is adjusted by using the stretchability by keeping the horizontal or vertical direction of the seat along the axial direction of the wire harness. The sheet is wound around the outer periphery of the wire harness while adjusting the length.

  By doing so, it can respond to the difference in the length of the attachment object part of many wire harnesses with the sheet | seat of few dimension types. Therefore, the size types of the sheet itself can be reduced, the production management can be facilitated, and mistakes in wearing can be reduced to contribute to quality improvement. In addition, since the sheet has stretchability, it is possible to ensure the bendability of the wire harness, and it is possible to form a clean exterior body without being loosened or wrinkled on the sheet.

  According to the invention of claim 5, since the packaging sheet according to claim 4 is wound around and fixed to the outer periphery of the wire harness using its stretchability, the wire harness can be obtained without preparing packaging sheets of many kinds of dimensions. The upper necessary parts can be reliably protected with a packaging sheet, and the cost of parts management can be saved, thereby reducing costs.

  According to the invention of claim 6, since the packaging sheet according to any one of claims 1 to 3 is wound around and fixed to the outer periphery of the mounted member while utilizing its elasticity, packaging sheets of a large number of types can be obtained. Even if it is not prepared, a necessary part on the member to be mounted can be reliably protected by the packaging sheet, and the cost of parts management can be saved and the cost can be reduced.

  Hereinafter, an embodiment when the present invention is applied to an exterior sheet for protecting a wire harness will be described with reference to the drawings.

  1 is a plan view of the packaging sheet 1, FIG. 2 is a partial cross-sectional view showing the structure of the stitches of the packaging sheet 1, FIG. 3A is an initial state of the packaging sheet 1, and FIG. FIG. 3C is a plan view showing a state where the packaging sheet 1 is extended in the vertical direction (arrow Y direction). Moreover, FIG. 4 is a figure which shows the example which expanded / contracted the packaging sheet 1 corresponding to the length of the mounting object part by the side of the wire harness W. FIG.

  As shown in FIG. 4, the packaging sheet 1 protects the wire harness W by being attached to the outer periphery of the wire harness W. As shown in FIG. 1, directions to be expanded and contracted (X direction and Y direction). ) In a first direction A having an angle of approximately 45 ° and a second direction B substantially perpendicular to the first direction A and aligning the direction of the stitches by the warp (warp) bundle 11A and the weft (weft) bundle 11B. Thus, the stretchable sheet 11 having stretchability in the horizontal direction X and the vertical direction Y is used as a basic member.

  That is, as shown in FIG. 2, the stretchable sheet 11 is composed of a bundle of belt-like yarns in which a plurality (three in the illustrated example) of yarns 11 s are arranged in a single row (may be a plurality of rows). The bundle 11B is arranged in a first direction (knitting direction) A and a second direction (knitting direction) B, and the warp yarn bundle 11A and the weft yarn bundle 11B are knitted into a plain weave to form a cloth-like knitted fabric. It has a rectangular shape with four sides along the horizontal direction X and the vertical direction Y. Then, each edge of the elastic sheet 11 is provided with an edge guard 13 for preventing unraveling, and then along one side in the vicinity of one side along the lateral direction X that is the longitudinal direction of the elastic sheet 11 along the side. By providing the adhesive 12, the packaging sheet 1 of the embodiment is configured.

  In addition, as the thread 11s, a filament (long fiber) made of natural fiber or synthetic fiber is used. As the filament, a monofilament (filament yarn composed of one filament) or a multifilament (one filament yarn obtained by twisting a plurality of filaments) can be used. Further, the plain weave is a fabric structure in which each weft yarn (weft) alternately passes above and below the warp yarn (warp yarn), and each warp yarn passes alternately above and below the weft yarn.

  The packaging sheet 1 configured in this manner knitted a bundle of strip-like yarns in which a plurality of yarns 11s are arranged in a row into a plain weave as a warp yarn bundle 11A and a weft yarn bundle 11B, and the direction of the stitches is the same as that of the packaging sheet 1. As shown in FIG. 3, the packaging sheet 1 is pulled in the horizontal direction X or the vertical direction Y because it is set obliquely with respect to the horizontal direction X that is the longitudinal direction and the vertical direction Y that is a direction orthogonal to the longitudinal direction. In this case, the direction of the yarn 11s can be easily tilted in the direction where the tensions Px and Py are applied by the tensions Px and Py, and the horizontal dimension and the vertical dimension can be expanded and contracted.

  Here, since the dimension in the lateral direction X needs to be adjusted when it is attached to the wire harness, for example, as shown in FIG. 3 (a), the lateral dimension in the initial state is L0. As shown in FIG. 3 (b), it is stretched to the dimension L1 by pulling in the lateral direction X with the tension Px, and as shown in FIG. 3 (c), it is pulled to the dimension L2 by pulling in the longitudinal direction Y with the tension Py. Shrink.

  By doing so, as shown in FIG. 4, the dimensions of the packaging sheet 1 can be made to correspond to the lengths L1 and L2 of the mounting target portion of the wire harness W, and the packaging sheet 1 is properly mounted. Can do.

  In mounting on the wire harness W, the lateral direction X of the packaging sheet 1 is aligned with the axial direction of the wire harness W, and the length in the lateral direction X of the packaging sheet 1 is adjusted on the wire harness W side by using elasticity. Wrapping the packaging sheet 1 around the outer periphery of the wire harness W while adjusting the length corresponding to the length of the mounting target portion, and covering the other side with the adhesive 12 provided on one side of the packaging sheet 1 while winding. Thus, the outer periphery of the wire harness W is fixed.

  In particular, in the case of this embodiment, the warp yarn and the weft yarn are not knitted into a plain weave one by one, but a plurality of yarns 11s are arranged in one or a plurality of rows to form a belt-like bundle, and the warp yarn (warp yarn bundle 11A) and the weft yarn Since it is knitted into a plain weave as (weft yarn bundle 11B), it becomes easy to ensure play by sliding adjacent yarns 11s, and the ease of tilting in the direction of the stitch can be secured by the play, As a result, good stretchability can be exhibited in the horizontal direction X and the vertical direction Y.

  Thus, since the dimension of especially the horizontal direction X of the packaging sheet 1 can be changed freely, even if there are many kinds of dimensions of the attachment object part when installing to the wire harness W, it is a packaging sheet of few dimension types. Can respond. Since the size types can be reduced, the production management of the packaging sheet 1 can be facilitated, mistakes in wearing can be reduced, and the quality can be improved. In addition, since the stretchability can be exhibited, it is possible to ensure the bendability of the wire harness W, and it is difficult for the packaging sheet 1 to be loosened and wrinkled, so that a good appearance can be formed. .

  In addition, the range of the dimensional change of the packaging sheet 1 can be freely changed by the diameters of fibers, yarns, the density of the braid, the knitting method, and the like.

  Moreover, although the said embodiment demonstrated the case where this invention was applied as an exterior sheet | seat for wire harness protection, the use object of this invention is not limited to it. For example, when considering other members to be mounted, it is necessary to wrap around the outer periphery of the mounted member while utilizing its elasticity, so that it is necessary on the mounted member without preparing many sized packaging sheets. The part can be reliably protected with a packaging sheet. Therefore, the number of parts management can be saved and the cost can be reduced.

  Moreover, although the case where the knitted fabric was used for the elastic sheet 11 was shown in the said embodiment, even if it uses a nonwoven fabric by aligning the binding direction of a fiber (staple) in the A direction and the B direction, it is the same The elasticity can be given. That is, even a non-woven fabric can be expanded and contracted in the longitudinal direction of the sheet by the fiber binding method, and in this case, the same actions and effects as in the above embodiment can be obtained.

It is a top view of the packaging sheet of embodiment of this invention. It is a fragmentary sectional view which shows the structure of the stitch of the packaging sheet of FIG. (A) is an initial state of the packaging sheet, (b) is a state in which the packaging sheet is extended in the horizontal direction (arrow X direction), and (c) is a state in which the packaging sheet is extended in the vertical direction (arrow Y direction). FIG. It is a figure which shows the example which expanded / contracted the said packaging sheet corresponding to the length of the mounting target part by the side of a wire harness. It is a top view which shows the example of the conventional packaging sheet. It is a perspective view which shows the state which wound the conventional packaging sheet around the wire harness. It is explanatory drawing in the case of making the conventional packaging sheet respond | correspond to the length of the mounting target part of a wire harness.

Explanation of symbols

1 Packaging sheet 11 Elastic sheet (sheet-like object)
12 Adhesive 11A Warp Bundle 11B Weft Bundle 11s Yarn A, B Stitch direction (first direction, second direction)
X Lateral direction (longitudinal direction)
Y Longitudinal direction (direction perpendicular to the longitudinal direction)
W Wire harness (attached member)

Claims (6)

  It is a sheet-like object such as a knitted fabric or a non-woven fabric made of fiber, and by arranging the direction of the fiber in a first direction having an angle with respect to the direction to be stretched and a second direction substantially orthogonal thereto A packaging sheet characterized by having elasticity in the horizontal and vertical directions. The packaging sheet according to claim 1,
A bundle of belt-like yarns in which a plurality of yarns are arranged in one or a plurality of rows are arranged as warp yarn bundles and weft yarn bundles in the first direction and the second direction, respectively, and the warp yarn bundles and the weft yarn bundles are knitted into plain weave. A packaging sheet characterized by comprising: The packaging sheet according to claim 1 or 2,
A rectangular shape having four sides along the horizontal direction and the vertical direction is formed, and an adhesive is provided along the side on one side in the vicinity of one side along the horizontal direction. Packaging sheet. The packaging sheet according to any one of claims 1 to 3,
A packaging sheet, which is a sheet for exterior of a wire harness that protects the wire harness by being attached to the outer periphery of the wire harness.   The packaging sheet according to claim 4, wherein the transverse direction is arranged along the axial direction of the wire harness and the longitudinal direction thereof is arranged along the circumferential direction of the wire harness, and the shape of the mounting target portion of the wire harness to be wound or A wire harness assembly, wherein the packaging sheet is wound around and fixed to the outer periphery of the wire harness in a state of being stretched or contracted depending on a situation such as a length. The packaging sheet according to any one of claims 1 to 3, wherein the horizontal direction or the vertical direction is arranged along the longitudinal direction of the mounted member, and the shape or length of the mounting target portion of the mounted member to be wound, etc. A packaging sheet mounting structure, wherein the packaging sheet is wound around and fixed to the outer periphery of the mounted member in a state where the packaging sheet is stretched or stretched according to the situation.

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