JP6902413B2 - Exterior body for electric wires and wire harness with exterior body - Google Patents

Description

The present invention relates to an outer body for an electric wire mounted on the outer periphery of the electric wire and a wire harness with the outer body.

Conventionally, as an exterior body for an electric wire to be attached to the outer circumference of an electric wire distributed to a vehicle or the like, the outer circumference of the wire harness is covered with a hollow plate material in which a hollow structure is formed between a plurality of plate-like members, so that an external force is applied. A protector that protects a wire harness is known (see Patent Document 1).

In such a protector, the hollow plate material is bent so as to include a bottom portion, a pair of side wall portions erected from both sides of the bottom portion, and a lid portion extending from one side wall portion, and the bottom portion and the pair of side wall portions are formed. The wire harness is housed in the housing part surrounded by the part, and is attached to the wire harness by closing the upper part of the housing part with the lid part.

International Publication No. 2015/016056

In the conventional protector as described above, when an external force is applied to the protector, the hollow plate material may be deformed and bent into the inside of the accommodating portion, and the wire harness may be damaged. Therefore, there has been a demand for a structure of an outer body for an electric wire and a wire harness with an outer body that are not easily deformed even when an external force is applied.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide an outer body for an electric wire and a wire harness with an outer body capable of suppressing deformation due to an external force.

In order to achieve the above object, the electric wire outer body of the present invention is an electric wire outer body mounted on the outer periphery of the electric wire, which extends along the extending direction of the electric wire and accommodates the electric wire. A plurality of wall portions forming the portions are provided, and at least one of the plurality of wall portions has a curved shape in which the approximate center in the width direction perpendicular to the longitudinal direction is curved outward. It is characterized by.

In the outer body for electric wires of the present invention, the wall portion has a width dimension in which the value of the height dimension from the pair of edge portions facing each other in the width direction to the approximate center is the dimension between the pair of edge portions. It is characterized in that it is a value of 1% or more and 10% or less of the value.

The exterior body for electric wires of the present invention is characterized in that the plurality of wall portions are integrally formed by bending one sheet member.

In order to achieve the above object, the wire harness with an outer body of the present invention includes a wire harness and the outer body for the electric wire, and the outer body for the electric wire is attached to the outer periphery of the wire harness. It is characterized by.

According to the outer body for electric wires and the wire harness with the outer body according to the present invention, deformation due to an external force can be suppressed.

It is a perspective view which shows the exterior body and the wire harness with the exterior body which concerns on embodiment of this invention. It is sectional drawing of the exterior body in the cross section along the line AA shown in FIG. It is a perspective view which shows the exterior body shown in FIG. 1 in the unfolded state.

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

First, the configuration of the wire harness with an exterior body according to the embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a diagram for showing a schematic configuration of a wire harness 1 with an exterior body according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the exterior body 7 in a cross section along the line AA. FIG. 3 is a perspective view showing the exterior body 7 shown in FIG. 1 in an unfolded state.

As shown in FIGS. 1 and 2, the wire harness 1 with an exterior body according to the embodiment of the present invention includes a wire harness 5 in which a plurality of electric wires are bundled and an exterior body mounted on the outer periphery of the wire harness 5. (Exterior body for electric wire) 7 is provided. The exterior body 7 includes a plurality of wall portions 2 extending along the extending direction (longitudinal direction x in FIG. 1) of the wire harness 5, and is surrounded by the plurality of wall portions 2 to accommodate the wire harness 5. 3 is formed. In FIG. 1, the wire harness 5 is shown in a single cylindrical shape surrounded by a long two-dot chain wire, but the wire harness 5 is a bundle of a plurality of electric wires.

The plurality of wall portions 2 are integrally formed by bending one sheet member. The sheet member is, for example, a foamed sheet made of a thermoplastic resin, and a plurality of wall portions 2 are formed by bending the bent portions 20a to 20d. The thickness of the sheet member is preferably about 0.5 mm or more and 4.0 mm or less, and particularly preferably about 1.5 mm. The plurality of wall portions 2 include a bottom wall portion 21, a side wall portion 22 connected from the edge of the bottom wall portion 21 via a bent portion 20a, and a bent portion 20b from the edge of the bottom wall portion 21. The side wall portion 23 is continuously provided via the side wall portion 23, the upper wall portion 24 is continuously provided from the tip of the side wall portion 22 via the bent portion 20c, and the side wall portion 23 is continuously provided from the tip of the side wall portion 23 via the bent portion 20d. It has a closed lid wall portion 25.

The bent portions 20a to 20d are formed so as to be able to be bent at a substantially right angle by, for example, performing push molding or half-cut processing. As shown in FIG. 3, of the bent portions 20a to 20d, the locking pieces 251a to 251h, which will be described later, can be inserted into the bent portions 20c at predetermined intervals along the longitudinal direction x. 201h is formed.

As shown in FIG. 1, the bottom wall portion 21 has extending portions 211a and 211b in which both ends in the longitudinal direction x extend in the longitudinal direction x from both ends of the upper wall portion 24 and the lid wall portion 25. There is.

The side wall portion 22 has standing portions 221a and 221b erected from the extending portions 211a and 211b via the bent portions 20a at both ends in the longitudinal direction x, and a part of both ends in the longitudinal direction x. It has a notched shape.

Similarly, the side wall portion 23 has erection portions 231a and 231b erected from the extending portions 211a and 211b via the bent portions 20b at both ends in the longitudinal direction x, and the side wall portion 23 has the erection portions 231a and 231b erected from the extending portions 211a and 211b via the bent portions 20b. It has a shape in which both ends are partially cut out.

Upper wall portion 24 extends from the distal end of the side wall portion 23 horizontally bottom wall portion 21 and the outline to the vicinity of the center of the vertical lateral direction y ₁ to the longitudinal direction x.

The lid wall portion 25 is arranged so as to cover and overlap the upper wall portion 24 from above. As shown in FIG. 3, the tip of the lid wall portion 25 has locking pieces 251a to 251h that can be inserted into the locking holes 201a to 201h. The locking pieces 251a to 251h are provided at predetermined intervals corresponding to the locking holes 201a to 201h. Further, of the locking pieces 251a to 251h, the locking pieces 251a, 251c, 251e, and 251g are approximately rectangular shapes inclined from the lid wall portion 25 toward the tip toward one side (extending portion 211a side) in the longitudinal direction x. The locking pieces 251b, 251d, 251f, and 251h have a shape and have a substantially rectangular shape inclined from the lid wall portion 25 toward the tip end toward the other side (extending portion 211b side) in the longitudinal direction x. .. The shapes of the locking pieces 251a to 251h and the shapes of the locking holes 201a to 201h are not limited to the above shapes and the shapes shown in FIG. 3, and various shapes are adopted to maintain the shape of the exterior body 7. be able to.

As shown in FIG. 2, the bottom wall portion 21, the side wall portions 22, 23 and the lid wall portion 25 are substantially centered in the longitudinal direction x (the width direction perpendicular to FIG. 1 (short direction y ₁ , y ₂ )). Has a curved shape that is curved outward, that is, curved to the side opposite to the accommodating portion 3 side. Specifically, the bottom wall portion 21 is in the arrow S ₁ direction, and the side wall portion 22 is in the arrow S ₂ direction. side wall 23 is an arrow S ₃ direction, the cover wall portion 25 has a curved shape which is curved in an arrow S ₄ direction.

More specifically, the bottom wall portion 21 and the lid wall portion 25 have _{width dimensions L 1} , L ₄ which are dimensions between a pair of edge portions 21a, 21b, 25a, 25b in _{the width direction (short direction y 1). Has a curved shape in which the values of the height dimensions D 1} and D ₄ , which are the dimensions from the pair of opposite edge portions 21a, 21b, 25a, 25b to the approximate center, are predetermined values with respect to the value of. .. Similarly, side wall portions 22 and 23, a pair of edge portions 22a in the width direction (lateral direction _{y 2),} 22b, 23a, relative to the value of width _L 2, _{L 3} is a dimension between 23b It has a curved shape in which the values _{of the height dimensions D 2} and D ₃ , which are the dimensions from the pair of opposite edge portions 22a, 22b, 23a, 23b to the approximate center, become predetermined values. Here, the predetermined value means that the value of the height dimensions D _{1 to} D ₄ is preferably 1% or more and 10% or less of the value of the width dimensions L _{1 to} L _{4, and is particularly about 5%.} Is preferable. Upper wall portion 24 has a shape curved from the front end of the side wall portion 23 along the inner surface of the cover wall portion 25 to the vicinity of the center in the lateral direction y _1.

The values of the height dimensions D ₁ and D ₄ with respect to the values of the width dimensions L ₁ and L _{4 and} the values of the height dimensions D ₂ and D ₃ with respect to the values of the width dimensions L ₂ and L ₃ are different values. There may be. For example, when the cross-sectional shape of the exterior body 7 is rectangular, the value of the height dimension D with respect to the value of the width dimension L on the short side may be larger than the value of the height dimension D with respect to the value of the width dimension L on the long side. Good.

As shown in FIGS. 1 and 2, the accommodating portion 3 is a portion surrounded by a bottom wall portion 21, side wall portions 22, 23, and a lid wall portion 25. The accommodating portion 3 has a tubular shape in which one side (extending portion 211a side) and the other side (extending portion 211b side) in the longitudinal direction x penetrate through the bottom wall portion 21, the side wall portions 22, 23, and the lid wall portion 25. It is formed and houses the wire harness 5.

Next, a method of forming the exterior body 7 configured as described above and a method of attaching the wire harness 1 with the exterior body will be described. In the method of forming the exterior body 7, first, a punching process is performed in which a portion corresponding to the exterior body 7 is punched out from a foam sheet which is a base material for forming the exterior body 7.

When the portion corresponding to the exterior body 7 is punched out from the foam sheet, the bent portions 20a to 20d are formed by performing push molding, half-cut processing, or the like on the portion corresponding to the bent portions 20a to 20d of the exterior body 7. .. If the value of the height dimension D is not a predetermined value with respect to the value of the width dimension L, for example, a pair of edge portions of the wall portion 2 are pressed against each other so as to have a predetermined value. It may be processed so as to have the value of.

In the method of attaching the exterior body 7 formed as described above to the wire harness 5, first, the side wall portions 22 and 23 are bent at the bent portions 20a and 20b so as to be substantially perpendicular to the bottom wall portion 21. When bent at the bent portions 20a and 20b, the space between the tip portions of the side wall portions 22 and 23 opens upward along the longitudinal direction x.

After bending the bent portions 20a and 20b, the wire harness 5 is placed on the bottom wall portion 21 and bent at the bent portion 20c so that the upper wall portion 24 is substantially parallel to the bottom wall portion 21. Further, the lid wall portion 25 is bent at the bent portion 20d so as to be substantially parallel to the bottom wall portion 21. When the lid wall portion 25 is bent at the bent portion 20d, the opening between the tips of the side wall portions 22 and 23 is closed to form the accommodating portion 3, and the wire harness 5 is inserted into the accommodating portion 3. Is housed.

Then, by inserting and fitting the locking pieces 251a to 251h into the locking holes 201a to 201h, the state in which the opening between the tips of the side wall portions 22 and 23 is closed is fixed, and the exterior body 7 is fixed. It is attached to the outer circumference of the wire harness 5.

The exterior body 7 may be attached to the outer circumference of the fixing tape for fixing the plurality of electric wires constituting the wire harness 5 so as not to be dispersed, or the plurality of electric wires not using the fixing tape. It may be mounted on the outer circumference of the. Further, it may be mounted on the outer circumference of one electric wire.

As described above, according to the exterior body 7 and the wire harness 1 with the exterior body according to the embodiment of the present invention, the exterior body 7 is formed of a foamed sheet of thermoplastic resin, and has a bottom wall portion 21 and a side wall. The portions 22, 23 and the lid wall portion 25 have a curved shape in which the substantially center is curved outward in the _{width direction (short directions y 1} , y _{2) perpendicular to the longitudinal direction x.} Therefore, when the wire harness 1 with an exterior body is attached to the vehicle, _{even if an external force is applied to the exterior body 7 in the twisting direction (for example, the arrows y 1} and y ₂ directions in FIG. 2), the exterior body 7 is deformed. It can be suppressed. In the conventional exterior body for electric wires, each wall portion is formed in a straight line, so that when an external force is applied in the twisting direction, the wall portion may bend inside the accommodating portion and damage the electric wire in the accommodating portion. there were. On the other hand, according to the exterior body 7 and the wire harness 1 with the exterior body according to the embodiment of the present invention, the bottom wall portion 21, the side wall portions 22, 23 and the lid wall portion 25 have a curved shape. Therefore, even when an external force is applied in the twisting direction, it is possible to prevent the exterior body 7 from bending inward of the accommodating portion 3 and prevent the wire harness 5 from being damaged.

Further, since it is possible to suppress bending even when an external force is applied in the twisting direction, it is possible to easily attach the wire harness 1 with an exterior body to the vehicle.

Further, since the bottom wall portion 21, the side wall portions 22, 23 and the lid wall portion 25 have a curved shape, a plurality of electric wires having a circular cross section can be accommodated in the accommodating portion 3 with a small gap. it can. Therefore, it is possible to suppress the variation between the electric wires and prevent the generation of abnormal noise.

Further, conventionally, since the fixing tape is manually wound around the outer circumference of the electric wire, the winding is irregular. However, since the exterior body 7 according to the embodiment of the present invention can be mounted on the outer periphery of a plurality of electric wires that do not use the fixing tape, the exterior body 7 is mounted on the outer periphery of the plurality of electric wires. As a result, the winding can be made constant.

In the above-described embodiment, the case where the exterior body 7 is formed by a plurality of wall portions 2 extending along the extending direction (longitudinal direction x in FIG. 1) of the wire harness 5 has been described. , It may be branched in the vertical and horizontal directions along the shape of the wire harness 5 in the middle of the extending direction.

Further, in the above-described embodiment, the case where the exterior body 7 is integrally formed by bending one sheet member has been described, but two or more sheet members are connected by a system stopper or the like. It may be configured as follows.

Further, in the above-described embodiment, the case where the exterior body 7 is a side view quadrangle is illustrated and described, but the side view may be another polygonal shape such as a triangle or a pentagon.

Further, in the above-described embodiment, the exterior body 7 closes the opening between the tips of the side wall portions 22 and 23 by fitting the locking pieces 251a to 251h into the locking holes 201a to 201h. Although the case of fixing the closed state has been described, the lid wall portion 25 may be fixed by welding to the bent portion 20d or the upper wall portion 24. Further, the lid wall portion 25 and the bent portion 20d may be fixed, or the lid wall portion 25 and the upper wall portion 24 may be fixed by a component connecting the lid wall portion 25 and the bent portion 20d.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the exterior body 7 and the wire harness 1 with the exterior body according to the above-described embodiment, and the concept of the present invention and claims for patents. Includes all aspects included in the scope of. In addition, each configuration may be selectively combined as appropriate so as to achieve at least a part of the above-mentioned problems and effects. For example, the shape, material, arrangement, size, etc. of each component in the above embodiment can be appropriately changed depending on the specific usage mode of the present invention.

1 Wire harness with exterior body 2 Wall part 3 Storage part 5 Wire harness 7 Exterior body (outer body for electric wire)
20a, 20b, 20c, 20d Bent part 21 Bottom wall part 22,23 Side wall part 24 Upper wall part 25 Cover wall part 201a, 201b, 201c, 201d, 201e, 201f, 201g, 201h Locking holes 211a, 211b Extend Parts 221a, 221b, 231a, 231b Standing parts 251a, 251b, 251c, 251d, 251e, 251f, 251g, 251h Locking pieces

Claims (3)

An exterior body for electric wires that is attached to the outer circumference of electric wires.
A plurality of wall portions extending along the extending direction of the electric wire and forming an accommodating portion for accommodating the electric wire are provided.
A bent portion formed by half-cut processing is provided between the adjacent wall portions.
The two wall portions arranged so as to sandwich the bent portion have a curved shape in which the approximate center is curved outward in the width direction perpendicular to the longitudinal direction .
The height dimension value of the wall portion from the pair of opposite edge portions in the width direction to the approximate center is 1% or more and 10% or less of the width dimension value which is the dimension between the pair of edge portions. An exterior body for electric wires characterized by being a value. Said plurality of walls, exterior body wires according to claim 1, characterized in that it is integrally formed by bending a single sheet member. A wire harness with an exterior
With a wire harness
The electric wire exterior body according to claim 1 or 2 is provided.
The wire harness for electric wires is a wire harness with an exterior body, which is mounted on the outer periphery of the wire harness.

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