JP6943757B2 - 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 and a wire harness with an outer body, which are attached to the outer periphery of an electric wire such as a wire harness.

As an exterior body for electric wires to be attached to the outer periphery of an electric wire distributed to a vehicle or the like, a sheet material is bent along a crease to form an accommodating portion, and the wire harness is accommodated in the accommodating portion to accommodate the wire harness. A protector that protects from an external force is known (see Patent Document 1).

This protector forms an accommodating portion by bending a sheet into a shape including a bottom portion and 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 other side wall portion. The opening of the accommodating portion is closed by superimposing and adhering the flange portion bent toward the outside of the accommodating portion.

Japanese Patent No. 5720725

However, in the above-mentioned conventional protector, since the flange portion protrudes outward from the other side wall portion, a dead space is generated by the protruding flange portion when the protector is placed on the vehicle, and the vehicle space cannot be effectively utilized. There was a problem.

Further, since it is not possible to secure the bent state of the flange portion due to the restoring force of the sheet material, it becomes difficult to superimpose the lid portion on the flange portion, and there is a problem that the workability of assembling the protector is lowered.

The present invention has been made in view of the above 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 that can be easily assembled while reducing dead space. ..

In order to achieve the above object, the outer body for an electric wire of the present invention is an outer body for an electric wire formed by bending a resin sheet and attached to the outer periphery of the electric wire, along the extending direction of the electric wire. The wall surface overlapping portion includes a plurality of wall portions extending to form an accommodating portion for accommodating the electric wire, and a wall surface overlapping portion that overlaps with each other in the outer peripheral direction of the electric wire among the plurality of wall portions. In the outer wall portion arranged on the outer side, a notch is formed so as to expose the inner side wall portion arranged on the inner side to the outside.

In the electric wire exterior body of the present invention, the notch is formed from the edge of the outer wall portion toward the outer peripheral direction of the electric wire.

The exterior body for an electric wire of the present invention has a plurality of joints for joining the outer wall portion and the inner side wall portion, and the notch is provided between the joint portions arranged adjacent to each other. ..

In the exterior body for an electric wire of the present invention, the notch has a length from the edge of the outer wall portion toward the outer periphery of the electric wire from the edge edge of the outer wall portion to the position where the joint portion is arranged. Longer than the length.

In the outer body for electric wires of the present invention, the edge of the inner side wall portion is arranged at a position away from the opposite bent portion of the bent portion of the resin sheet.

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, it can be easily assembled while reducing the dead space.

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 a perspective view which shows the exterior body which concerns on embodiment of this invention in the unfolded state. It is a top view of the exterior body which concerns on embodiment of this invention. It is a perspective view which shows the exterior body which concerns on embodiment of this invention in a bent state. It is a perspective view which shows the state which pressed the lower lid wall part of the exterior body which concerns on embodiment of this invention, and overlapped the upper cover wall part.

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 FIG. FIG. 1 is a perspective view showing an exterior body 3 and a wire harness 1 with an exterior body according to an embodiment of the present invention.

For convenience of explanation, the longitudinal direction (length direction) of the exterior body 3 is referred to as "X", and the lateral direction (width direction) of the exterior body 3 is referred to as "Y".

As shown in FIG. 1, the wire harness 1 with an outer body according to the embodiment of the present invention includes a wire harness 2 in which a plurality of electric wires are bundled, and an outer body for electric wires mounted on the outer periphery of the wire harness 2. Hereinafter, it is also referred to as an “exterior body”) 3. The wire harness 2 is protected from the external environment by the exterior body 3. Although the wire harness 2 is shown in the shape of one cylinder in FIG. 1, the wire harness 2 includes one or more electric wires.

Next, the exterior body 3 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 2 is a perspective view showing the exterior body 3 shown in FIG. 1 in an unfolded state. FIG. 3 is a top view of the exterior body 3 shown in FIG.

As shown in FIG. 1, the exterior body 3 includes a plurality of wall portions 4 extending along the extending direction (longitudinal direction X) of the wire harness (electric wire) 2, and is surrounded by the plurality of wall portions 4. It has an accommodating portion 5 for accommodating the wire harness 2. The exterior body 3 has a quadrangular or substantially quadrangular cross-sectional shape in the lateral direction Y.

As shown in FIGS. 1 and 2, the plurality of wall portions 4 are integrally formed by bending one thermoplastic resin foam sheet. The thermoplastic resin foam sheet resin type is not particularly limited as long as it is a thermoplastic resin, and for example, polyethylene resin, polypropylene resin, polycarbonate resin, polyethylene terephthalate resin, polybutylene terephthalate resin, polyamide resin, polyphenylene sulfide resin, etc. Examples thereof include polystyrene resin, polyvinyl chloride resin, polyvinyl acetate resin, polytetrafluoroethylene resin, and acrylic resin. The thickness of the thermoplastic resin foam sheet is preferably 0.50 mm or more and 4.0 mm or less, preferably 0.8 mm or more 2 from the viewpoint of further improving the balance between the ease of bending and the mechanical strength such as tensile strength. 5.5 mm or less is particularly preferable.

As shown in FIG. 2, the plurality of wall portions 4 are formed by bending a thermoplastic resin foam sheet at bent portions 20a to 20d. The bent portions 20a to 20d have a shape that can be easily bent by forming a push-molded portion, a half-cut portion, a broken line-shaped cut portion, or the like by pressing a flat thermoplastic resin foam sheet.

The plurality of wall portions 4 include a bottom wall portion 41, a side wall portion 42 connected from the edge of the bottom wall portion 41 via a bent portion 20a, and a bent portion 20b from the edge of the bottom wall portion 41. The side wall portion 43 connected via the side wall portion 43, the lower lid wall portion (inner side wall portion) 44 continuously provided from the end edge of the side wall portion 42 via the bent portion 20c, and the side wall portion 43 bent from the end edge. It has an upper lid wall portion (outer wall portion) 45 that is continuously provided via the portion 20d.

As shown in FIG. 1, the bottom wall portion 41 is arranged between the side wall portion 42 and the side wall portion 43, and the side wall portion 42 is erected from the edge of the bottom wall portion 41 via the bent portion 20a. A side wall portion 43 is erected from the edge of the bottom wall portion 41 via the bent portion 20b.

The lower lid wall portion 44 and the upper lid wall portion 45 overlap each other in the outer peripheral direction of the wire harness 2 (the lateral direction Y in FIG. 1), and the overlapping portion is the wall surface overlapping portion 46. Specifically, the wall surface overlapping portion 46 is a portion in which the end portion 45b from the edge 45a of the upper lid wall portion 45 to the vicinity of the center in the lateral direction Y is covered and overlapped from above the lower lid wall portion 44. A plurality of joint portions 61 are provided in the wall surface overlapping portion 46 (six in the embodiment of the present invention), and the lower lid wall portion 44 and the upper lid wall portion 45 are joined by the joint portion 61. ing. As the joining means in the joining portion 61, for example, an adhesive means such as an adhesive or an adhesive tape, a welding means such as ultrasonic welding or heat welding, a locking member, a fitting means using a rivet or the like, a hotchkiss or the like are used. Examples include the penetrating fixing means used.

The lower lid wall portion 44 is arranged parallel to or substantially parallel to the bottom wall portion 41 from the edge of the side wall portion 42 via the bent portion 20c, and is arranged inside (accommodation portion 5 side) in the overlapping portion 46. Has been done. The edge 44a of the lower lid wall portion 44 is arranged at a position away from the opposing bent portion 20d. That is, the edge 44a of the lower lid wall portion 44 is located near the center in the lateral direction Y and does not reach the bent portion 20d.

The upper lid wall portion 45 is arranged parallel to or substantially parallel to the bottom wall portion 41 from the edge of the side wall portion 43 via the bent portion 20d, and is arranged outside in the overlapping portion 46. The upper lid wall portion 45 is arranged so that the edge 45a is substantially flush with the side wall portion 42 in a state where the upper lid wall portion 45 is arranged above the lower lid wall portion 44. The upper lid wall portion 45 is formed with a notch 71 in the overlapping portion 46 that exposes the lower lid wall portion 44 to the outside. Specifically, the notch 71 is formed from the end edge 45a of the upper lid wall portion 45 toward the outer peripheral direction (short direction Y) of the wire harness 2. A plurality of notches 71 (three in the embodiment of the present invention) are formed in the upper lid wall portion 45, and the notches 71 are formed between two joint portions 61 arranged adjacent to each other. It is provided.

As shown in FIG. 3, the plurality of notches 71 include a pair of notch edges 71a and 71b extending linearly or substantially linearly in the lateral direction Y from the end edge 45a of the upper lid wall portion 45, and a pair of notch edges. It is formed from a notch edge portion 71c provided between the portions 71a and 71b and extending linearly or substantially linearly in the longitudinal direction X. That is, the shape of the notch 71 is substantially quadrangular. The shape of the notch 71 may be a rhombus, a triangle, a circle, an ellipse, or the like.

The dimension A between the notch edge portion 71a and the notch edge portion 71b, that is, the length of the notch edge portion 71c, presses the lower lid wall portion 44 exposed from the notch 71 with a finger or a pressing member (not shown). From the point of overlapping the upper lid wall portion 45 from above while keeping the lower lid wall portion 44 parallel to or substantially parallel to the bottom wall portion 41, it is preferably 5 mm or more and 20 mm or less. The distance B from the center of one adjacent notch 71 to the center of the other notch is 50 mm or more and 80 mm or less from the point where the lower lid wall portion 44 is kept parallel to or substantially parallel to the bottom wall portion 41. Is preferable.

The cutout edge portion 71c is arranged on the edge 45a side of the upper lid wall portion 45 from the edge 44a of the lower lid wall portion 44, and is arranged on the bent portion 20d side from the joint portion 61. That is, the length C extending from the edge 45a of the upper lid wall portion 45 in the notch edge portion 71a and the notch edge portion 71b in the lateral direction Y is shorter than the width D in the lateral direction Y of the lower lid wall portion 44, and is shorter than the width D of the lower lid wall portion 44 in the lateral direction Y. It is longer than the length E from the edge 45a of the portion 45 to the position where the joint portion 61 is arranged.

As shown in FIG. 1, the accommodating portion 5 is a portion surrounded by a bottom wall portion 41, side wall portions 42, 43, a lower lid wall portion 44, and an upper lid wall portion 45. The accommodating portion 5 is formed in a cylindrical shape in which one side and the other side in the longitudinal direction X penetrate through the bottom wall portion 41, the side wall portions 42, 43, the lower lid wall portion 44, and the upper lid wall portion 45, and the wire harness 2 is provided. Can be accommodated.

Next, with reference to FIGS. 4 and 5, a method of forming the exterior body 3 described above and a method of attaching the wire harness 2 to the exterior body 3 to form the wire harness 1 with the exterior body will be described. FIG. 4 is a perspective view showing a part of the bent portions 20a to 20d of the exterior body 3 shown in FIG. 2 in a bent state. FIG. 5 is a perspective view showing a state in which the lower lid wall portion 44 of the exterior body 3 shown in FIG. 4 is pressed and the upper lid wall portion 45 is overlapped.

In the method of forming the exterior body 3, first, a punching process is performed by punching out a portion corresponding to the exterior body 3 from a thermoplastic resin foam sheet which is a base material for forming the exterior body 3. Examples of the punching process include punching with a Thomson blade die from the viewpoint of cost reduction and processing simplicity.

After punching out the portion corresponding to the exterior body 3, the portion corresponding to the bent portions 20a to 20d of the punched out portion corresponding to the exterior body 3 is pressed and molded. By performing push molding, the bent portions 20a to 20d are formed, and good bendability is imparted to the bent portions 20a to 20d.

In the method of forming the exterior body 3, the lower lid wall portion 44 is formed when the exterior body 3 is assembled because the portion of the lower lid wall portion 44 corresponding to the notch 71 is accurately pressed with a finger or a pressing member. The portion where the notch 71 is arranged (region S shown in FIGS. 4 and 5) may be marked.

In the method of attaching the exterior body 3 formed as described above to the wire harness 2, first, the side wall portions 42 and 43 are bent at the bent portions 20a and 20b so that the side wall portions 42 and 43 are substantially perpendicular to the bottom wall portion 41. .. When bent at the bent portions 20a and 20b, the space between the end portions of the side wall portions 42 and 43 opens upward along the longitudinal direction X.

After bending the bent portions 20a and 20b, as shown in FIG. 4, the wire harness 2 is placed on the bottom wall portion 41 so that the lower lid wall portion 44 is substantially parallel to the bottom wall portion 41. , Bend at the bent portion 20c.

Next, the portion of the lower lid wall portion 44 corresponding to the notch 71 is pressed with a finger or a pressing member. That is, the region S in which the notch 71 is arranged is pressed to maintain a state in which the lower lid wall portion 44 is substantially parallel to the bottom wall portion 41.

Next, the bent portion 20d is bent so that the upper lid wall portion 45 is substantially parallel to the bottom wall portion 41. When the upper lid wall portion 45 is bent at the bent portion 20d, the notch 71 passes through the finger or the pressing member pressing the region S in the lower lid wall portion 44. That is, when the lid wall portion 25 is bent at the bent portion 20d and the upper lid wall portion 45 is superposed on the lower lid wall portion 44, a finger or a finger or a finger or a space between the notch edge portion 71a of the notch 71 and the notch edge portion 71b. The pressing member passes through.

Further, when the upper lid wall portion 45 is bent at the bent portion 20d, the end portion 45b of the upper lid wall portion 45 and the lower lid wall portion 44 overlap to form the wall surface overlapping portion 46. When the end portion 45b of the upper lid wall portion 45 is superposed on the lower lid wall portion 44, the lower lid wall portion 44 is exposed from the notch 71.

When the end portion 45b of the upper lid wall portion 45 is overlapped on the lower lid wall portion 44, the lower lid wall portion 44 and the upper lid wall portion 45 are joined to form the joint portion 61 at the wall surface overlapping portion 46. Specifically, one notch 71 is joined at two points, a vicinity of the notch edge portion 71a and a vicinity of the notch edge portion 71b. When the lower lid wall portion 44 and the upper lid wall portion 45 are joined, the state in which the opening between the side wall portion 42 and the side wall portion 43 is closed is fixed to form the accommodating portion 5, and the wire is formed in the accommodating portion 5. The harness 2 is housed in the inserted state.

Then, by joining the lower lid wall portion 44 and the upper lid wall portion 45, the state in which the opening between the side wall portion 42 and the side wall portion 43 is closed is fixed, and the exterior body 3 is attached to the outer periphery of the wire harness 2. Will be done.

The exterior body 3 may be attached to the outer periphery of the fixing tape for fixing the plurality of electric wires constituting the wire harness 2 so as not to be dispersed, and the exterior body 3 may be attached to the outer periphery of the fixing tape, and the plurality of electric wires not using the fixing tape may be attached. It may be mounted on the outer circumference. Further, the exterior body 3 may be mounted on the outer circumference of one electric wire.

As described above, according to the exterior body 3 and the wire harness 1 with the exterior body according to the embodiment of the present invention, in the wall surface overlapping portion 46 where the lower lid wall portion 44 and the end portion 45b of the upper lid wall portion 45 overlap. A notch 71 is formed to expose the lower lid wall portion 44 to the outside. Therefore, while pressing the lower lid wall portion 44 to keep the lower lid wall portion 44 substantially parallel to the bottom wall portion 41, the end portion 45b of the upper lid wall portion 45 is attached to the lower lid wall portion 44. Can be overlaid. That is, since the finger or the pressing member that presses the lower lid wall portion 44 passes through the notch 71, the lower lid wall portion 44 is pressed and the lower lid wall portion 44 is kept substantially parallel to the bottom wall portion 41. The upper lid wall portion 45 can be superposed on the lid wall portion 44. Therefore, the upper lid wall portion 45 can be easily overlapped with the lower lid wall portion 44, and the work efficiency of attaching the exterior body 3 to the wire harness 2 can be improved.

Further, since the notch 71 for exposing the lower lid wall portion 44 to the outside is formed in the wall surface overlapping portion 46 where the lower lid wall portion 44 and the end portion 45b of the upper lid wall portion 45 overlap, the lateral direction Y of the exterior body 3 is Y. The cross-sectional shape of the above can be a quadrangular shape or a substantially quadrangular shape. Therefore, no dead space is generated when the exterior body 3 is arranged in the vehicle.

Then, according to the exterior body 3 and the wire harness 1 with the exterior body, the notch edge portion 71c of the notch 71 is arranged on the edge 45a side of the upper lid wall portion 45 from the edge 44a of the lower lid wall portion 44 and is joined. It is arranged on the bent portion 20d side from the portion 61. Therefore, since the vicinity of the edge 44a of the lower lid wall portion 44 can be pressed, the state in which the lower lid wall portion 44 is substantially parallel to the bottom wall portion 41 can be stably maintained.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the exterior body 3 and the wire harness 1 with the exterior body according to the above-described embodiment, and the concept of the present invention and claims are made. 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. The configuration of each part can be replaced with an arbitrary configuration having the same function.

The case where the notch 71 in the embodiment of the present invention described above is formed from the edge 45a of the upper lid wall portion 45 toward the lateral direction Y has been described, but the end of the upper lid wall portion 45 in the longitudinal direction X has been described. It may be formed along the longitudinal direction X from the edge. Further, the notch 71 may have a shape in which the corner of the outer lid portion is cut out in an L shape. That is, the position, shape and number of the notches 71 can be changed as appropriate.

Further, the case where the overlapping portion 46 in the embodiment of the present invention described above is a portion where the lower lid wall portion 44 and the edge 45a of the upper lid wall portion 45 overlap each other has been described. A part in the lateral direction Y and a part in the lateral direction Y of the upper lid wall portion 45 may overlap each other. That is, in the overlapping portion 46, the region and range where the lower lid wall portion 44 and the upper lid wall portion 45 overlap can be appropriately changed.

1 Wire harness with exterior body 2 Wire harness 3 Exterior body 4 Wall part 5 Storage part 20a, 20b, 20c, 20d Bent part 41 Bottom wall part 42, 43 Side wall part 44 Lower lid wall part 44a Edge edge 45 Upper lid wall part 45a Edge edge 45b Edge portion 61 Joint portion 71a, 71b, 71c Notched edge portion S region X Longitudinal direction Y Short direction

Claims (5)

An electric wire exterior body that is formed by bending a resin sheet and is attached to the outer circumference of an electric wire.
A plurality of wall portions extending along the extending direction of the electric wire and forming an accommodating portion for accommodating the electric wire.
Among the plurality of wall portions, a wall surface overlapping portion that overlaps with each other in the outer peripheral direction of the electric wire is provided.
In the wall surface overlapping portion, the outer wall portion arranged on the outside is formed with a notch for exposing the inner side wall portion arranged on the inside to the outside .
It has a plurality of joints for joining the outer wall portion and the inner side wall portion, and has a plurality of joint portions.
The notch is an electric wire exterior body provided between the joints arranged adjacent to each other. The outer body for an electric wire according to claim 1, wherein the notch is formed from an end edge of the outer wall portion toward the outer peripheral direction of the electric wire. The notch is claimed in claim 1 or 2, wherein the length from the edge of the outer wall portion toward the outer periphery of the electric wire is longer than the length from the edge edge of the outer wall portion to the position where the joint portion is arranged. Exterior body for electric wires. The exterior body for an electric wire according to any one of claims 1 to 3 , wherein the edge of the inner side wall portion is arranged at a position away from the opposite bent portion of the bent portion of the resin sheet. A wire harness with an exterior
With a wire harness
The electric wire exterior body according to any one of claims 1 to 4 is provided.
The outer body for electric wires is a wire harness with an outer body attached to the outer periphery of the wire harness.

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