JP2012221916A - Wire with protective member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wire with a protective member which can respond flexibly to multi-product production and design change.SOLUTION: In a wire 1 with a protective member, the protective member 10 consists of a body member 3 and a cover member 4. The body member 3 has a route network consisting of multiple paths capable of laying a wire 2 formed along one surface, and multiple vents 34 are formed at multiple positions in the route network. The wire 2 is laid along a selected route in a part of the route network in the body member 3. The cover member 4 is produced by vacuum molding a sheet of thermoplastic resin covering one surface of the body member 3 by sucking air through the vents 34. A recess is formed in the cover member 4 along the route network by vacuum molding.

Description

  The present invention relates to an electric wire with a protective member mounted on a vehicle or the like.

  An electric wire mounted on a vehicle or the like is often mounted on the vehicle or the like in a state where a protective member is attached to maintain a predetermined laying shape along a branched path. Assembling the electric wire with a protective member is, for example, arranging the electric wire while supporting the electric wire with a jig erected along the laying shape on the assembly drawing board, binding the arranged electric wire with an adhesive tape, This is done by attaching a protective member made of resin or a mounting part such as a clamp, which is a fixing part for fixing the electric wire to a support such as a vehicle body, at a predetermined part of the electric wire.

  In the conventional assembly process of the electric wire with a protective member, the number of processes and many necessary tools such as jigs are large, and the work load and the necessary cost are large. Therefore, the electric wire with a protection member which can be assembled with a smaller work load and cost is required.

  In response to the above requirements, for example, Patent Document 1 proposes that an electric wire with a protective member is produced using a molding die. The electric wire with a protective member shown in Patent Document 1 is manufactured by arranging an electric wire in a branched groove in a molding die, and further molding a resin with the molding die. Thereby, the electric wire with a protection member provided with the electric wire and the protective member made of resin which is formed in a branched shape and covers the periphery of the electric wire is manufactured.

  The electric wire with a protective member shown in Patent Document 1 is manufactured by a relatively simple process without using an assembly drawing board and a jig.

JP 2004-6129 A

  However, the electric wire with a protective member shown in Patent Document 1 requires a different molding die for each laying shape of the electric wire for its production. In addition, the molding die requires a large number of man-hours and costs for its design and manufacture, and further, it is troublesome to use a plurality of molding dies while replacing them in the resin molding process.

  Therefore, the electric wire with a protective member shown in Patent Document 1 has a problem that it is difficult to flexibly cope with multi-product production and design change in terms of man-hours and costs required for design and manufacture.

  This invention is made | formed in view of said subject, and it aims at providing the electric wire with a protection member which can respond flexibly to multi-product production and a design change.

The electric wire with a protective member according to the first invention includes the following components.
(1) The first component is a first in which a route network including a plurality of routes in which electric wires can be laid is formed along one surface, and a plurality of vent holes are formed at a plurality of positions in the route network. It is a protective member.
(2) A 2nd component is an electric wire laid along the one part selection path | route in the path | route network in a 1st protection member.
(3) The third component is a member in which a thermoplastic resin sheet covering one surface of the first protective member on which the electric wire is laid is vacuum-formed by air suction through the vent hole of the first protective member. The second protective member covers one surface of the first protective member and is formed with a recess along the route network. Thin plates and films are examples of sheets.

  The electric wire with a protective member according to a second aspect of the present invention comprises the configuration of the electric wire with a protective member according to the first aspect of the present invention, and in the electric wire with a protective member, the first protective member has a path between them on one surface. A plurality of protrusions forming a route network including the intersection are provided.

  An electric wire with a protective member according to a third aspect of the present invention comprises the structure of an electric wire with a protective member according to the second aspect of the present invention, and in the electric wire with a protective member, a plurality of protrusions form lattice points on one surface of the protective member. Arranged in position.

  The electric wire with a protective member according to a fourth aspect of the present invention comprises the configuration of the electric wire with a protective member according to any one of the first to third aspects, and in the electric wire with a protective member, each of the plurality of protrusions is a hollow protrusion. is there.

  1st invention WHEREIN: The set of a 1st protection member and a 2nd protection member comprises the protection member which covers a part of electric wire by pinching a part of electric wire from both sides. And according to 1st invention, an electric wire is laid in the state along the path | route selected from the some path | route included in the path | route network of a 1st protection member, and an electric wire is a shape along a selection path | route. Maintained. Moreover, only by changing the selection path | route in the path | route network of a 1st protection member, one type of 1st protection member is shared in many types of electric wires with a protection member, and the electric wire with a protection member before and after a design change It becomes possible to apply.

  In addition, vacuum forming vents are formed at a plurality of positions in the path network of the first protective member. The second protective member is a member obtained by vacuum-forming a thermoplastic resin sheet using the vent holes of the first protective member. Due to the vacuum forming, the second protective member is formed with a recess along the path network of the first protective member. Therefore, the space | interval of the path | route network part of a 1st protection member and the hollow part of a 2nd protection member is narrowed by vacuum forming, and is adjusted to the space | interval according to the thickness of an electric wire. As a result, a situation in which the electric wire vibrates between the first protective member and the second protective member and generates noise is avoided.

  According to the second invention, in the protection member, the route network is constituted by a plurality of protrusions, so that the route network of the protection member is formed with a simple configuration.

  Further, according to the third invention, since the plurality of protrusions arranged at the positions forming the lattice points form a lattice-like route network, there are a great number of kinds depending on the combination of the partial routes in the row direction and the column direction. The route can be selected.

  Moreover, according to the 4th invention, since several protrusion is a hollow protrusion, a 1st protection member can be reduced in weight.

It is a top view of electric wire 1 with a protection member concerning an embodiment of the invention. It is a sectional side view of electric wire 1 with a protection member. It is side sectional drawing of the electric wire 1 with a protection member fixed to the support body. It is a 1st figure for demonstrating the manufacturing method of the electric wire 1 with a protection member. It is a 2nd figure for demonstrating the manufacturing method of the electric wire 1 with a protection member.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following embodiment is an example embodying the present invention, and is not an example of limiting the technical scope of the present invention.

<Configuration of electric wire 1 with protective member>
First, the structure of the electric wire with a protective member according to the embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 shows a plan view of the electric wire 1 with a protective member, and FIG. 2 shows a side sectional view of the electric wire 1 with a protective member shown in FIG. FIG. 3 shows a side sectional view of the electric wire 1 with a protection member fixed to the support. 2 and 3 are cross-sectional views at the same position.

  The protective member-equipped electric wire 1 includes an electric wire 2 and a protective member 10 including a main body member 3 and a cover member 4. The electric wire 2 is, for example, a covered electric wire that interconnects various electric devices in a vehicle or the like. In addition, the electric wire 2 with which the electric wire 1 with a protection member is provided may be one electric wire, or an electric wire bundle composed of a plurality of electric wires.

  The main body member 3 functions as a member that protects the electric wire 2 and also functions as a shape regulating member that maintains the electric wire 2 in a predetermined laying shape.

  The main body member 3 has a flat rectangular base portion 31 and a plurality of protrusions 32 erected in a range over almost the entire area of one of the front and back surfaces (first surface) of the main body member 3. With. Each protrusion 32 is a hollow protrusion, and is disposed at a position forming a lattice point on the first surface of the main body member 3.

  Each projection 32 preferably has a polygonal shape (for example, a rectangular shape) with rounded corners (rounded) in plan view. Each protrusion 32 preferably has a shape (tapered shape) in which the tip is slightly narrowed.

  Moreover, in the example shown by FIG.1 and FIG.2, each protrusion 32 is a hollow protrusion. Thereby, the advantage that the main body member 3 can be reduced in weight is acquired. In this case, the bottom portion and the top portion of each protrusion 32 may be closed or open. In the example shown in FIG. 2, the top of each protrusion 32 is closed, and the bottom of each protrusion 32 is open.

  The gaps formed between the plurality of protrusions 32 form a route network including a plurality of routes on which the electric wire 2 can be laid, and the route network includes intersections of the routes. In the present embodiment, the plurality of protrusions 32 are arranged at positions that form lattice points on the first surface of the main body member 3. Thereby, a grid-like route network is formed on the first surface of the main body member 3.

  The electric wire 2 is laid along a selected route, which is a partial route selected from the routes in the route network of the main body member 3, whereby the electric wire 2 is held in a shape along the selected route. Furthermore, the electric wire 2 is fixed to the main body member 3 at a position (fixed position) P in the extending direction thereof in a state along the selection path. If each of the plurality of protrusions 32 has a polygonal shape with rounded corners, an advantage is obtained that the electric wire 2 laid along the protrusions 32 is hardly damaged.

  Further, the base portion 31 of the main body member 3 is formed with clamp holes 33 at a plurality of locations on the outer edge portion thereof. The clamp hole 33 is a through hole through which a clamp 9 that is a fixing part for fixing the electric wire 1 with a protective member to a fixed position of a support such as a metal panel or resin panel of a vehicle is passed.

  Further, the base portion 31 of the main body member 3 is formed with air holes 34 at a plurality of locations in the route network and at a plurality of locations at other outer edge portions. This vent hole 34 is a very small pinhole-shaped through hole, and is used as an air suction port when the cover member 4 is formed by vacuum forming. The main body member 3 is an example of a first protective member.

  The cover member 4 is a member in which a thermoplastic resin sheet covering the first surface of the main body member 3 on which the electric wire 2 is laid is vacuum-formed by air suction through the vent holes 34 of the main body member 3. Due to the vacuum forming, the cover member 4 is formed with a recess 41 along the path network of the main body member 3, that is, along the path network formed between the plurality of protrusions 32 on the first surface of the main body member 3. Yes. A portion other than the recessed portion 41 in the cover member 4 is a base portion 42 that contacts the protrusion 32 of the main body member 3.

  The cover member 4 is a member obtained by vacuum-forming a sheet of thermoplastic resin such as a polyester film having a thickness of about 100 micrometers to about 300 micrometers used for a laminate sheet. Here, the sheet includes a thin plate of a thermoplastic resin. The cover member 4 is an example of a second protective member.

  In the example shown in FIG. 1, the cover member 4 is a transparent member. Therefore, even after the electric wire 2 is sandwiched between the main body member 3 and the cover member 4, the wiring state of the electric wire 2 can be visually recognized, so that the wiring can be easily confirmed. The term “transparent” described herein means that light is transmitted to the extent that visibility is not hindered, and includes the meaning of colored transparency and translucency in addition to being completely colorless and transparent.

  As shown in FIG. 3, the protective member-equipped electric wire 1 is fixed to the support body 90 by the clamps 9 passed through the clamp holes 33 and 43 of the main body member 3 and the cover member 4 and the mounting hole 91 of the support body 90. Is done. Thus, the electric wire 1 with a protective member is fixed to a fixed position of the support 90 such as a metal panel or a resin panel of the vehicle by a simple operation of inserting the clamp 9 into the clamp hole 33.

<Method for producing electric wire 1 with protective member>
Next, a method for manufacturing the electric wire 1 with a protective member will be described with reference to FIG. FIG. 4 is a view for explaining a method of manufacturing the electric wire 1 with a protective member.

  As described above, the first surface of the main body member 3 is formed with a lattice-like route network that is a set of a plurality of partial routes formed between two adjacent protrusions 32. Therefore, the laying route of the electric wire 2 can be selected from a large number of routes by combining the partial route in the row direction and the partial route in the column direction. In the first step, a route on which the electric wire 2 is to be laid is selected from a route network formed on the first surface of the main body member 3. In addition, illustration of a 1st process is abbreviate | omitted.

  In the second step, the electric wire 2 is laid on the first surface of the main body member 3 so as to cause the gaps between the protrusions 32 along the path selected in the first step. As a result, the electric wire 2 is held in a shape along a part of the selected paths in the path network formed on the first surface of the main body member 3. In addition, illustration of a 2nd process is abbreviate | omitted.

  In the third step, the electric wire 2 is fixed to the main body member 3 at a fixing position P that is an intersection position between the end side of the base portion 31 and the electric wire 2. As an aspect of fixing the electric wire 2 to the main body member 3, for example, it is conceivable that the electric wire 2 is fastened by a band passed through a pair of fixing through holes formed in the base portion 31.

  Further, a tape winding piece is formed on the outer edge of the base portion 31, and the electric wire 2 is fixed to the base portion 31 by bundling the electric wire 2 and the tape winding piece with an adhesive tape or a fastening band wound around them. It can also be considered. It is also conceivable that the electric wire 2 is bonded to the base portion 31 with an adhesive.

  Next, a vacuum forming step is performed in the fourth step and the fifth step. The vacuum forming process is performed using a vacuum forming apparatus 50 including a mold member 51, a sheet support portion 52, and a heater 53.

  First, in the fourth step, as shown in FIG. 4, the thermoplastic resin sheet 400 that is the base of the cover member 4 is heated by the heater 53 while being supported by the sheet support portion 52 at the edge thereof. The In the present embodiment, a clamp hole 43 that overlaps with the clamp hole 33 of the main body member 3 is formed in the sheet 400 in advance. The sheet 400 becomes soft and easily molded by heating.

  Next, in the fifth step, as shown in FIG. 5, the heated sheet 400 is placed on the first surface of the main body member 3 supported by the mold member 51. The formwork member 51 is a member whose surface is formed along the shape of the second surface opposite to the first surface in the main body member 3. Therefore, the mold member 51 includes a base support portion 511 that supports the base portion 31 portion of the main body member 3 along the shape of the second surface side, and a second protrusion portion 32 of the main body member 3. And a protrusion support portion 512 that supports the shape of the side of the surface.

  Further, a positioning projection 513 for positioning the main body member 3 and the sheet 400 is formed on the mold member 51 in the present embodiment by penetrating the clamp holes 33 and 43 of the stacked main body member 3 and the sheet 400. Has been.

  Further, the mold member 51 is formed with a plurality of vent holes 514 at positions overlapping with the plurality of vent holes 514 of the main body member 3. In a state where the main body member 3 is supported by the mold member 51, the vent hole 34 of the main body member 3 communicates with the vent hole 514 of the mold member 51.

  Further, in the fifth step, air is sucked from the opposite side to the side of the mold member 51 facing the main body member 3 by a suction device (not shown). Thereby, the air in the path | route network of the main body member 3 is discharged | emitted through the vent holes 34 and 514, and the pressure in a path | route network falls. And the part which opposes the path | route net | network in the heated sheet | seat 400 bends and deform | transforms into the main body member 3 side with a suction force. Thereby, the sheet | seat 400 is shape | molded to the cover member 4 in which the hollow part 41 along a path | route network was formed.

  Finally, in the sixth step, the main body member 3 and the cover member 4 are joined by ultrasonic welding or bonding with an adhesive or the like at a portion where they contact each other. Thereby, the main body member 3 and the cover member 4 are hold | maintained in the state united. The main body member 3 and the cover member 4 combined in this way are the protection members 10.

  Note that the cover member 4 and the protection member 3 are held in a state of being combined by a retaining mechanism configured by a protrusion with a hook portion formed on one side and an edge of a hole formed on the other side. Is also possible. The electric wire 1 with a protective member can be obtained through the above steps.

<Effect>
According to the above embodiment, the electric wire 2 is laid along a route selected from a plurality of routes included in the route network of the main body member 3, and the electric wire 2 follows the selected route. Maintained in shape. Moreover, only by changing the selection path | route in the path | route network of the main body member 3, one type of main body member 3 is shared in many types of electric wires 1 with a protection member, and the electric wire 1 with a protection member before and after a design change. It becomes possible to apply.

  Further, in the electric wire with protective member 1, the clamp holes 33 and 43 are formed in the main body member 3 and the cover member 4, so that the electric wire with protective member 1 is connected to the vehicle by the clamp 9 passed through the clamp holes 33 and 43. It is easily fixed to a support 90 such as a panel.

  Further, in the main body member 3, the path network is configured by the plurality of protrusions 32, and thus the path network of the main body member 3 is formed with a simple configuration. Furthermore, since a plurality of protrusions 32 arranged at positions forming lattice points form a lattice-like route network, a very large number of types of routes can be selected by combining partial routes in the row direction and the column direction. Can do. Furthermore, since the plurality of protrusions 32 are hollow protrusions, the main body member 3 can be reduced in weight.

  Further, the cover member 4 obtained by vacuum forming is formed with a recess 41 along the route network of the main body member 3. Therefore, the distance between the path network portion of the main body member 3 and the recess 41 of the cover member 4 is narrowed by vacuum forming, and is adjusted to the distance corresponding to the thickness of the electric wire 2. As a result, a situation in which the electric wire 2 vibrates between the main body member 3 and the cover member 4 and generates noise is avoided.

<Modification>
In the step of manufacturing the electric wire 1 with a protective member, a step of cutting out a region including only a route other than the selected route in the main body member 3, that is, a part of the region where the electric wire 2 is not laid may be performed. Thereby, the weight and installation space of the electric wire 1 with a protection member can be reduced more.

  In the above embodiment, a plurality of protrusions 32 are formed to form a path network on the first surface of the main body member 3. However, the mode of forming the path network is not necessarily a protrusion. It is not restricted to the aspect which forms. For example, grooves (for example, lattice-like grooves) formed in the base portion 31 may form a route network.

  In the above embodiment, the plurality of protrusions 32 are arranged at positions that form lattice points. However, the route network formed on the first surface of the main body member 3 is at least two or more selectable. Any route network including a route may be used. That is, the route network formed on the first surface of the main body member 3 does not necessarily have a lattice shape and does not necessarily have to be regular. For example, it is conceivable that the plurality of protrusions 32 are arranged at intervals on a concentric circumference on the base portion 31. In this case, a route network in which the radial route and the route on the circumference intersect is formed. Further, for example, an irregular route network may be formed by irregularly arranging the plurality of protrusions 32.

  Further, in the above-described embodiment, the route network is formed over almost the entire first surface of the main body member 3, but the route network may be formed in a partial region of the first surface.

  Moreover, in said embodiment, the example in which the cover member 4 is fixed with respect to the main body member 3 by welding, adhesion | attachment, or a retaining mechanism is shown. However, it is also conceivable that the cover member 4 is not fixed to the main body member 3 by welding or the like. In this case, the clamp 9 passed through the clamp hole 33 of the main body member 3 and the clamp hole 43 of the cover member 4 that overlaps the main body member 3 holds the main body member 3 and the cover member 4 in a combined state.

  In the above-described embodiment, each protrusion 32 formed on the main body member 3 has a polygonal shape with rounded corners in plan view, but may have a circular shape in plan view. It is also conceivable that each protrusion 32 is not a hollow protrusion but a rod-like protrusion.

  Further, in each of the above embodiments, the main body member 3 and the cover member 4 are considered to be molded members of resin such as polypropylene (PP) or polyamide (PA), for example.

DESCRIPTION OF SYMBOLS 1 Electric wire with protective member 2 Electric wire 3 Main body member 4 Cover member 9 Clamp 31 Base part of protective member 32 Projection 33 Clamp hole of main body member 34 Vent hole of main body member 41 Recessed part of cover member 42 Base part of cover member 43 Cover member Clamping hole 50 Vacuum forming apparatus 51 Formwork member 52 Sheet support portion 53 Heater 90 Support body 91 Support body mounting hole 400 Thermoplastic resin sheet 511 Base support portion 512 Protrusion support portion 513 Positioning protrusion portion 514 Formwork member Vent

Claims (4)

A first protection member in which a route network composed of a plurality of routes capable of laying electric wires is formed along one surface, and a plurality of vent holes are formed at a plurality of positions in the route network;
An electric wire laid along a part of the selected route in the route network in the first protective member;
The thermoplastic resin sheet covering the one surface of the first protective member on which the electric wire is laid is a member formed by vacuum suction by air suction through the vent hole of the first protective member, and the first protection An electric wire with a protective member, comprising: a second protective member that covers the one surface of the member and has a recess formed along the route network. It is an electric wire with a protection member according to claim 1,
An electric wire with a protective member, wherein the first protective member includes a plurality of protrusions that form the route network including an intersection of the routes between the first surface and the one surface. It is an electric wire with a protection member according to claim 2,
The electric wire with a protective member in which a plurality of the protrusions are arranged at positions forming lattice points on the one surface of the protective member. A wire with a protective member according to any one of claims 1 to 3,
An electric wire with a protective member, wherein each of the plurality of protrusions is a hollow protrusion.

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