JP7200885B2 - Wiring material - Google Patents

Description

The present invention relates to a technique for protecting a flat wiring body using a protective sheet material.

Patent Literature 1 discloses a technique of wrapping a wire bundle, in which a plurality of wires are bundled so as to have a circular cross section, with a protective sheet material in order to protect the wires mounted on a vehicle.

JP 2016-19292 A

In addition to the electric wire bundle, a flat wiring body may be mounted on the vehicle as a wiring member. In the case of protecting the flat wiring body with a protective sheet material, it is difficult to apply the technique of protecting a wire bundle having a round cross section with the protective sheet material as described in Patent Document 1 above.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a technique suitable for protecting a flat wiring member with a protective sheet material.

In order to solve the above problems, a wiring member according to a first aspect includes a flat wiring body and a protective sheet partially fixed at a plurality of locations spaced apart from at least one main surface of the wiring body. and a material, wherein the protective sheet material and the wiring body can move relatively in a direction connecting a plurality of spaced apart fixed points, and the protective sheet material is a sheet having fibers, a foam A sheet or a sheet with a solid cross-section .

A wiring member according to a second aspect includes a flat wiring body and a protective sheet material partially fixed at a plurality of locations spaced apart from at least one main surface of the wiring body, The protective sheet material and the wiring body can be relatively moved in a direction connecting a plurality of spaced fixing points, and the protective sheet material and the wiring body are welded together.

A wiring member according to a third aspect includes a flat wiring body and a protective sheet material partially fixed at a plurality of locations spaced apart from at least one main surface of the wiring body, The protective sheet material and the wiring body are relatively movable in a direction connecting a plurality of spaced apart fixing points, the wiring body includes a plurality of parallel transmission line bodies, and the wiring body and the wiring body The protective sheet material is fixed to the plurality of transmission line main bodies at intervals in the parallel direction.
A wiring member according to a fourth aspect includes a flat wiring body and a protective sheet material partially fixed at a plurality of locations spaced apart from at least one main surface of the wiring body, The protective sheet material and the wiring body are relatively movable in a direction connecting a plurality of spaced apart fixing points, the wiring body includes a plurality of parallel transmission line bodies, and the wiring body and the wiring body The protective sheet materials are fixed to the plurality of transmission line main bodies at intervals in the longitudinal direction thereof, and are fixed at intervals in the parallel direction of the plurality of transmission line main bodies.
A wiring member according to a fifth aspect is the wiring member according to any one of the first to fourth aspects, wherein the protective sheet material has flexibility.

According to each aspect, when a portion of the wiring member provided with the protective sheet material rubs against a burr or the like, the protective sheet material and the wiring body can move relative to each other. This makes it difficult for the burr to reach the wiring body, thereby suppressing damage to the wiring body. As a result, the protective performance of the protective sheet material can be improved, and it can be said that this technique is suitable for protecting flat wiring members with the protective sheet material.

It is a schematic plan view showing the wiring member according to the embodiment. FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1; It is a figure explaining operation|movement when a wiring member is caught by a burr. It is a figure explaining operation|movement when a wiring member is caught by a burr. It is a schematic sectional drawing which shows the wiring member which concerns on a modification.

{Embodiment}
A wiring member according to an embodiment will be described below. FIG. 1 is a schematic plan view showing a wiring member 10 according to an embodiment. FIG. 2 is a cross-sectional view cut along line II-II of FIG.

The wiring member 10 is a member that is connected to a component mounted on a vehicle and transmits electricity or light to and/or from the component. The wiring member 10 includes a wiring body 20 and a protective sheet material 40 .

The wiring body 20 is a member that is connected to a component mounted on the vehicle and transmits electricity or light to and/or from the component. Therefore, the wiring body 20 includes a transmission member that transmits electricity or light. The wiring member 10 is formed flat. In the following description, it is assumed that the wiring body 20 is the wiring body 22 with a substrate. The wiring body with substrate 22 includes a plurality of linear transmission members 24 and a sheet-like substrate 30 .

The linear transmission member 24 may be any linear member that transmits electricity or light. For example, the linear transmission member 24 may be a general electric wire having a core wire and a coating around the core wire, or may be a bare conductor wire, a shielded wire, an enameled wire, a nichrome wire, an optical fiber, or the like. Various signal lines and various power lines may be used as the linear transmission member 24 for transmitting electricity.

Here, the linear transmission member 24 has a transmission line body that transmits electricity or light, and an outer skin that covers the transmission line body. In the following description, it is assumed that the linear transmission member 24 is a general electric wire 24 (hereinafter simply referred to as the electric wire 24). In other words, the electric wire 24 has a core wire 26 as a transmission line body and an insulating coating 28 as an outer sheath covering the transmission line body.

The core wire 26 is composed of one or more strands. The strands are made of conductors such as copper, copper alloys, aluminum, and aluminum alloys. When the core wire 26 is composed of a plurality of strands, the strands are preferably twisted. The insulating coating 28 is formed by extrusion molding a resin material such as PVC (polyvinyl chloride) or PE (polyethylene) around the core wire 26 . Here, the wire 24 is a so-called round wire having a circular cross section.

A plurality of electric wires 24 are arranged on one main surface of a sheet-shaped base material 30 . The route of the electric wire 24 on the base material 30 may be appropriately set. In the example shown in FIG. 1, the electric wire 24 is arranged linearly on the substrate 30, but it may be arranged in a curved manner, or may have both a straight portion and a curved portion. may be placed in Also, in the example shown in FIG. 1, the plurality of electric wires 24 are arranged side by side on the substrate 30, but at least some of the plurality of electric wires 24 may extend along different paths.

For example, a connector provided at the end of the electric wire 24 is connected to a mating connector provided on a component or the like to which the wiring member 10 is connected. Such a connector is formed such that the ends of the wires 24 are received in the wire receiving portion of the housing. In the example shown in FIG. 1 , the ends of the wires 24 extend outside the substrate 30 , but the ends of the wires 24 may be positioned on the substrate 30 . In this case, the housing may or may not be fixed directly to the substrate 30 .

The sheet-like base material 30 keeps the plurality of electric wires 24 flat. Here, the electric wire 24 is arranged on the base material 30 . The electric wire 24 and the base material 30 are fixed. Such a fixation mode may be contact site fixation, non-contact site fixation, or a combination of both. Here, the contact portion fixation means that the contact portion between the electric wire 24 and the base material 30 is attached and fixed. In addition, non-contact part fixation is a fixation mode other than contact part fixation. 30 is sandwiched to maintain that state. In the following description, it is assumed that the electric wire 24 and the base material 30 are in a fixed state of contact.

Such contact site fixation may be indirect fixation at the contact site, direct fixation at the contact site, or both may be used in different regions. Here, the indirect fixation of the contact portion means that the electric wire 24 and the base material 30 are indirectly attached and fixed via an adhesive, adhesive, double-sided adhesive tape, or the like provided therebetween. Further, the direct fixation of the contact portion means that the electric wire 24 and the base material 30 are directly attached and fixed without an adhesive or the like provided separately. In the direct fixation of the contact portion, it is conceivable that, for example, resin contained in at least one of the electric wire 24 and the base material 30 is melted to stick and fix. In the following description, it is assumed that the electric wire 24 and the base material 30 are directly fixed at the contact portion.

In forming such a state in which the contact portion is directly fixed, the resin may be melted, for example, by heat or melted by a solvent. That is, the state of direct fixation of the contact portion may be the state of direct fixation of the contact portion by heat or the state of direct fixation of the contact portion by solvent. Preferably, the contact portion is directly fixed by heat.

At this time, the means for forming the state of direct fixation of the contact portions is not particularly limited, and known means such as welding, fusing, and welding can be used. For example, when the contact portion is directly fixed by heat by welding, various welding means such as ultrasonic welding, heat-pressure welding, hot-air welding, and high-frequency welding can be employed. Further, when the contact portion directly fixed state is formed by these means, the electric wire 24 and the base material 30 are brought into the contact portion directly fixed state by the means. Specifically, for example, when the contact portion directly fixed state is formed by ultrasonic welding, the electric wire 24 and the base material 30 are brought into the contact portion directly fixed state by ultrasonic welding.

In the case of directly fixing the contact portion, either one of the resin contained in the insulating coating 28 of the wire 24 and the resin contained in the substrate 30 may be melted, or both may be melted. In the former case, the melted resin may stick to the outer surface of the unmelted resin, forming a relatively sharp interface. In the latter case, both resins may intermingle without forming a sharp interface. In particular, when the insulating coating 28 of the electric wire 24 and the base material 30 contain resins that are easily compatible, such as the same resin material, both resins may be mixed and a clear interface may not be formed.

The protective sheet material 40 is partially fixed to at least one main surface of the wiring body 20 at a plurality of locations spaced apart from each other. Here, the protective sheet material 40 is partially fixed to the other main surface of the base material 30 .

In the example shown in FIG. 1, the base material 30 and the protective sheet material 40 are formed in a rectangular shape, but the shapes of the base material 30 and the protective sheet material 40 are not limited to this. The base material 30 is preferably formed in a shape corresponding to the arrangement route of the electric wire 24 and the like. A portion where the electric wire 24 is not arranged can be omitted as appropriate.

Moreover, although the base material 30 and the protective sheet material 40 are formed in the same shape, they may be formed in different shapes. In other words, the protective sheet material 40 and the base material 30 may have portions that do not partially overlap each other. At this time, the protective sheet material 40 may be provided on part of the base material 30 , or the base material 30 may be provided on part of the protective sheet material 40 .

The base material 30 and the protective sheet material 40 are partially fixed at a plurality of locations spaced apart in the first direction D1. Furthermore, the base material 30 and the protective sheet material 40 are partially fixed at a plurality of locations spaced apart in a second direction D2 intersecting the first direction D1.

In FIG. 1, a fixing point P of the base material 30 and the protective sheet material 40 is indicated by an imaginary line. As shown in FIG. 1, four corners of the base material 30 and the protective sheet material 40 which are formed in a rectangular shape and overlapped are fixed. Thus, in the example shown in FIG. 1, the substrate 30 and protective sheet material 40 are partially separated at a plurality of locations spaced apart in the first direction D1 along the first edge of the substrate 30 and protective sheet material 40. is fixed to Also, the base material 30 and the protective sheet material 40 are partially fixed at a plurality of locations spaced apart in the second direction D2 along the second edge of the base material 30 and the protective sheet material 40 . The first direction D1 is the direction in which the plurality of electric wires 24 are arranged in the example shown in FIG. The second direction D2 is the longitudinal direction of the electric wire 24 in the example shown in FIG. Of course, it is conceivable that the first direction D1 and the second direction D2 are directions other than this.

The base material 30 and the protective sheet material 40 are fixed at two locations spaced apart along the first direction, but may be fixed at three or more locations spaced apart along the first direction. . Similarly, the base material 30 and the protective sheet material 40 are fixed at two locations spaced apart along the second direction, but are fixed at three or more locations spaced apart along the second direction. good too.

As means for fixing the base material 30 and the protective sheet material 40, welding is adopted here. That is, at least one of the base material 30 and the protective sheet material 40 has a resin material, and this resin material is melted to be joined to the other side.

Such welding means is not particularly limited, and various welding means such as ultrasonic welding, heat-pressure welding, hot-air welding, and high-frequency welding can be employed. The welding means between the electric wires 24 and the base material 30 and the welding means between the base material 30 and the protective sheet material 40 may be the same or different.

Materials constituting the base material 30 and the protective sheet material 40 are not particularly limited. Materials constituting the base material 30 and the protective sheet material 40 may contain resins such as PVC, PE, PET (polyethylene terephthalate), and PP (polypropylene), or metals such as aluminum or copper. may contain.

The material of the base material 30 may be the same as or different from the material of the protective sheet material 40 .

The base material 30 and the protective sheet material 40 may be those having fibers such as woven fabric, knitted fabric, and non-woven fabric, or those formed by bonding without having fibers by extrusion molding or injection molding. may be In the latter case, the base material 30 and the protective sheet material 40 may be a foamed body, or may be formed to have a solid cross section without being foamed.

Moreover, the base material 30 and the protective sheet material 40 may have a single-layer structure, or may have a multi-layer structure. When the base material 30 and the protective sheet material 40 have a multi-layer structure, for example, resin layers may be laminated. Further, for example, it is conceivable that a resin layer and a metal layer are laminated. When the base material 30 is configured by laminating a resin layer and a resin layer, layers having fibers may be laminated or layers having no fibers may be laminated, or a layer having fibers and a layer having fibers may be laminated. may be overlaid with a layer that does not have

When the base material 30 and the protective sheet material 40 have a multilayer structure, the base material 30 and the protective sheet material 40 may be formed by laminating separately formed sheet-like members, or may be formed by one extrusion. The base material 30 and the protective sheet material 40 may be molded by molding, injection molding, or the like.

The structure of the base material 30 may be the same as or different from that of the protective sheet material 40 .

The base material 30 is preferably formed so as to face fixing (here, welding) of the electric wire 24 . More specifically, the material forming the portion of the base material 30 to which the electric wire 24 is fixed may be set according to the means for fixing the base material 30 and the electric wire 24 . For example, when the base material 30 and the insulating coating 28 of the electric wire 24 are welded together, it is preferable that the part of the base material 30 to which the electric wire 24 is fixed contains a resin, and the electric wire 24 is fixed to the base material 30. More preferably, the portion and the insulating coating 28 of the wire 24 contain the same resin. As a result, the insulating coating 28 of the electric wire 24 and the resin base material 30 are melted and joined to each other, thereby increasing the welding strength.

On the other hand, the protective sheet material 40 is preferably formed so as to have higher protective performance than the base material 30 . As such a combination of the base material 30 and the protective sheet material 40, for example, the base material 30 is made of PVC and is formed to have a substantial cross section by extrusion molding or the like, and the protective sheet material 40 is made of PET. It is conceivable that it is a non-woven fabric.

The wiring member 10 preferably has flexibility. Thereby, when the wiring member 10 is arranged, it can be arranged in a bent state. For example, the base material 30 and the protective sheet material 40 have flexibility. At this time, even if the electric wire 24 is arranged with respect to the base material 30, the flexibility of the base material 30 and the protective sheet material 40 is not hindered. Thereby, the wiring member 10 can have flexibility. However, the wiring member 10 does not have to be flexible.

<Action>
The operation when the wiring member 10 is caught by a burr will be described with reference to FIGS. 3 and 4. FIG. 3 and 4 are explanatory diagrams showing the operation when the wiring member 10 is caught on the burr 82. FIG.

For example, when the wiring member 10 is assembled to a vehicle, or when the wiring member 10 is moved by vibration or the like in a state where the wiring member 10 is assembled to the vehicle, a portion of the wiring member 10 may be formed on the burr 82 formed on the metal member 80. A situation may occur in which the wiring member 10 moves against the burr 82 in a hooked state.

At this time, as shown in FIG. 3, consider the case where the wiring member 10 moves with respect to the burr 82 in a state where the portion of the wiring member 10 provided with the protective sheet member 40 is caught on the burr 82 . More specifically, when the wiring member 10 moves in the direction connecting the fixing points P in a state where the burr 82 is caught between the fixing points P of the protective sheet material 40 and the wiring body 20 . think. In the example shown in FIG. 3, when the wiring member 10 moves in the first direction D1 with the burr 82 caught in the portion between the fixing points P separated along the first direction D1 in the protective sheet material 40, think.

Here, since the protective sheet material 40 is fixed to the wiring body 20 at a plurality of fixed points P spaced apart, the protective sheet material 40 and the wiring body 20 are fixed at a plurality of fixed points P spaced apart. can move relatively in the direction connecting Therefore, even when the intermediate portion of the protective sheet material 40 along the first direction D1 is caught on the burr 82, the wiring body 20 can move in the first direction D1 with respect to the burr 82 as shown in FIG. can. This makes it difficult for the burr 82 to reach the wiring body 20 , thereby suppressing damage to the wiring body 20 .

According to the wiring member 10 configured as described above, when the portion of the wiring member 10 provided with the protective sheet material 40 rubs against the burr 82 or the like, the protective sheet material 40 and the wiring body 20 are relatively can move to This makes it difficult for the burr 82 to reach the wiring body 20 , thereby suppressing damage to the wiring body 20 . As a result, the protective performance of the protective sheet material 40 can be improved, and it can be said that this technique is suitable for protecting the flat wiring member 10 with the protective sheet material 40 .

The wiring body 20 includes a sheet-like base material 30 and a plurality of electric wires 24 arranged on one main surface of the base material 30 , and a protective sheet material 40 is partially provided on the other main surface of the base material 30 . Since the wires 24 are rigidly fixed, the flat wiring body 20 can be easily formed using the general-purpose electric wires 24 .

{Modification}
Although the protective function of the protective sheet material 40 has been mainly described so far, it is conceivable that the protective sheet material 40 has functions other than the protective function. For example, in the wiring member 110 according to the modification shown in FIG. 5, the protective sheet material 140 has a heat insulation function. Here, the heat insulation function refers to a function of reducing heat transfer by at least one of conduction, convection, and radiation.

For example, if the other main surface (the main surface opposite to the wiring body 20 side) of the protective sheet material 140 is provided with a reflective layer made of a metal such as aluminum or a white resin, the rate of reflecting electromagnetic waves is high. This makes it possible to suppress heat transfer due to radiation. In this case, the reflective layer preferably has a high infrared reflectance.

Further, for example, if the protective sheet material 140 has a foamed resin layer, the bubbles formed in the foamed resin layer can suppress heat transfer due to conduction and convection. At this time, the size of the cells formed in the foamed resin layer is preferably small and the number of cells is preferably large in order to enhance the heat insulating effect. Note that when a large number of fine air bubbles are formed in the foamed resin layer as in this preferred example, the foamed resin layer turns white. This whitened foamed resin layer can also be used as the reflective layer.

The reflective layer and a layer having low thermal conductivity may be laminated on one protective sheet material 140 . A transparent resin layer having a high transmittance may be formed on the outer surface side of the reflective layer.

The resin constituting the white resin layer that serves as the reflective layer and the resin that constitutes the foamed resin layer that serves as the layer with low thermal conductivity are not particularly limited, and various resins such as PBT (polybutylene terephthalate) can be used. A resin material can be used.

The wiring member 110 in which the protective sheet material 140 has a heat insulating function is disposed with the other main surface of the protective sheet material 140 directed toward a heat source 90 such as an exhaust manifold, as shown in FIG. As a result, the transfer of heat from the heat source 90 to the wiring body 20 is blocked by the protective sheet material 140 , making it difficult for the heat to be transmitted to the wiring body 20 .

By changing the material, structure, etc., of the protective sheet material 140 in this way, the protective sheet material 140 can have a function other than the protective function, such as a heat insulating function.

In addition, although the flat wiring body 20 has been described as being the wiring body 22 with the substrate, this is not an essential configuration. The flat wiring body 20 is a so-called FFC (flexible flat cable) in which a plurality of core wires 26 are collectively covered with one covering, or a so-called FPC (flexible cable) in which a circuit is formed on a conductor foil bonded to an insulating film serving as a base. printed circuit board) or the like.

Further, even when the flat wiring body 20 is the wiring body 22 with the base material, the configuration is not limited to the one described above. Regarding the shape of the linear transmission member 24, for example, the outer shape of the linear transmission member 24 may be formed to have an angular cross section. In this case, the contact area between the substrate 30 and the linear transmission member 24 can be easily increased. Moreover, the wiring body with substrate 22 may have a cover that covers the linear transmission member 24 from the side opposite to the substrate 30 .

Further, although the fixing means for fixing the base material 30 and the protective sheet material 40 has been explained so far as welding, this is not an essential configuration. For example, the base material 30 and the protective sheet material 40 may be joined with an adhesive, an adhesive tape, or the like. Further, for example, the base material 30 and the protective sheet material 40 may be sewn together with a sewing thread. Further, for example, the base material 30 and the protective sheet material 40 may be mechanically joined by a binding band, a stapler, or the like.

Also, the wiring body 20 and the protective sheet material 40 have been described so far as being fixed with a gap in each of a plurality of directions including the first direction D1 and the second direction D2, but this is essential. is not the composition of For example, the wiring body 20 and the protective sheet material 40 may be fixed with a gap only in the first direction D1. In this case, for example, in the example shown in FIG. 1, it is conceivable that the portion between the fixing points P is continuously fixed along the second direction D2. Further, for example, the wiring body 20 and the protective sheet material 40 may be fixed with a gap only in the second direction D2. In this case, for example, in the example shown in FIG. 1, it is conceivable that the portion between the fixing points P is continuously fixed along the first direction D1.

This specification includes the following disclosures.
A wiring member according to a first aspect includes a flat wiring body and a protective sheet material partially fixed at a plurality of locations spaced apart from at least one main surface of the wiring body.
A wiring member according to a second aspect is the wiring member according to the first aspect, wherein the wiring body includes a sheet-like base material and a plurality of wires disposed on one main surface of the base material. and a shape transmission member, wherein the protective sheet material is partially fixed to the other main surface of the base material.
A wiring member according to a third aspect is the wiring member according to the first or second aspect, wherein the protective sheet material has a heat insulating function.
According to each aspect, when a portion of the wiring member provided with the protective sheet material rubs against a burr or the like, the protective sheet material and the wiring body can move relative to each other. This makes it difficult for the burr to reach the wiring body, thereby suppressing damage to the wiring body. As a result, the protective performance of the protective sheet material can be improved, and it can be said that this technique is suitable for protecting flat wiring members with the protective sheet material.
According to the second aspect, a flat wiring body can be easily formed using a general-purpose linear transmission member.
According to the third aspect, it is possible to provide a heat insulation function in addition to the protection function.
In addition, each structure demonstrated by the said embodiment and each modification can be combined suitably, unless it mutually contradicts.

Although the present invention has been described in detail as above, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that numerous variations not illustrated can be envisioned without departing from the scope of the invention.

REFERENCE SIGNS LIST 10 wiring member 20 wiring body 22 wiring body with substrate 24 electric wire (linear transmission member)
30 base material 40 protective sheet material 80 metal member 82 burr 90 heat source P fixing point D1 first direction D2 second direction

Claims (5)

a flat wiring body;
a protective sheet material partially fixed at a plurality of locations spaced apart from at least one main surface of the wiring body;
with
the protective sheet material and the wiring body can move relative to each other in a direction connecting a plurality of spaced fixing points ;
The wiring member , wherein the protective sheet material is a sheet having fibers, a foam sheet, or a sheet having a solid cross section . a flat wiring body;
a protective sheet material partially fixed at a plurality of locations spaced apart from at least one main surface of the wiring body;
with
the protective sheet material and the wiring body can move relative to each other in a direction connecting a plurality of spaced fixing points;
A wiring member in which the protective sheet material and the wiring body are welded together. a flat wiring body;
a protective sheet material partially fixed at a plurality of locations spaced apart from at least one main surface of the wiring body;
with
the protective sheet material and the wiring body can move relative to each other in a direction connecting a plurality of spaced fixing points;
The wiring body includes a plurality of parallel transmission line bodies,
A wiring member, wherein the wiring body and the protective sheet material are fixed with a space therebetween in a parallel direction of the plurality of transmission line bodies. a flat wiring body;
a protective sheet material partially fixed at a plurality of locations spaced apart from at least one main surface of the wiring body;
with
the protective sheet material and the wiring body can move relative to each other in a direction connecting a plurality of spaced fixing points;
The wiring body includes a plurality of parallel transmission line bodies,
The wiring member and the protective sheet material are fixed with a gap in the longitudinal direction of the plurality of transmission line bodies and fixed with a gap in the parallel direction of the plurality of transmission line bodies. The wiring member according to any one of claims 1 to 4 ,
The wiring member, wherein the protective sheet material is flexible.

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