JP2022128494A - Arrangement structure of wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology capable of arranging a wire harness on the roof lining so as to face a plurality of connection partners.

SOLUTION: In an arrangement structure of a wire harness 20, a plurality of electric wires 22 are bundled and branched into a plurality of branch wire portions 23 at only one branch portion provided on a roof lining. The plurality of branch wire portions extends on the roof lining from the branch portion toward the respective connection partners in a flat state fixed to the corresponding sheet from among a plurality of sheets 30, and the plurality of branch wire portions include a first branch wire portion 23a in which a first sheet and a second sheet as sheets are provided at intervals along the direction in which the electric wire extends. The first sheet and the second sheet have the same fixed electric wire. A path bending portion is provided between the first sheet and the second sheet such that the electric wire bends along the roof lining.

SELECTED DRAWING: Figure 2

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to an arrangement structure for wire harnesses.

Techniques for fixing a wire harness to an attachment target are described in Patent Literatures 1 and 2, for example. Patent Literature 1 discloses a technique for fixing a wire harness to an attachment target using a clamp (also referred to as a clip). Patent Document 2 discloses a technique for fixing a roof harness to a roof lining (also called head lining, roof trim, etc.).

JP 2012-10474 A JP-A-2000-335329

Wire harnesses are sometimes arranged on the roof lining so as to lead to a plurality of connection partners.

Therefore, it is an object of the present invention to provide a technique that enables wiring harnesses to be arranged on a roof lining so as to face a plurality of connecting partners.

In order to solve the above problems, a wire harness arrangement structure according to a first aspect is a wire harness arrangement structure in which a wire harness including a plurality of electric wires and a plurality of sheets is arranged in a roof lining, the plurality of are branched into a plurality of branch wire portions at only one branch portion provided on the roof lining from a bundled state, and each of the plurality of branch wire portions is one of the plurality of sheets. It is fixed to the corresponding seat and extends on the roof lining from the branch portion toward the respective connection partner in a flat state, and the plurality of branch wire portions extend from the first sheet and the second sheet as the sheets. The first sheet and the second sheet include first branch wire portions provided at intervals along the direction in which the electric wires extend, the electric wires fixed to the first sheet and the second sheet being the same, and the first sheet and the A path bending portion is provided between the second sheets for bending the electric wire along the roof lining.

A wire harness arrangement structure according to a second aspect is the wire harness arrangement structure according to the first aspect, in which there are three or more branch wire portions.

A wire harness arrangement structure according to a third aspect is the wire harness arrangement structure according to the first or second aspect, wherein the plurality of branch wire portions extend straight from the branch portion toward the connection partner. a second branch secured to only one of said sheets of shape.

A wire harness arrangement structure according to a fourth aspect is the wire harness arrangement structure according to the third aspect, in which a plurality of the second branch wire portions are provided.

A wire harness arrangement structure according to a fifth aspect is the wire harness arrangement structure according to any one of the first to fourth aspects, from the branch portion to the connection partner of the first branch wire portion. , interferes with the opening of the roof lining, and the first branch line avoids the opening by the path bending portion.

According to each aspect, a wire harness is arranged on the roof lining so as to face a plurality of connection partners.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic exploded perspective view which shows the fixing structure of the wire harness which concerns on embodiment, and its assembly|attachment object. It is a schematic plan view which shows the fixing structure of the wire harness which concerns on embodiment. 3 is a cross-sectional view taken along line III-III of FIG. 2; FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic perspective view which shows the wire harness which concerns on embodiment. It is a schematic perspective view which shows the modification of a wire harness. It is a schematic perspective view which shows the member for fixation which concerns on embodiment. It is a schematic sectional drawing which shows the 1st modification of the fixing structure of a wire harness. It is a schematic sectional drawing which shows the 2nd modification of the fixing structure of a wire harness. It is a schematic sectional drawing which shows the 3rd modification of the fixing structure of a wire harness. It is explanatory drawing which shows a mode that a wire harness is fixed to a plate-shaped member. It is a schematic sectional drawing which shows the modification of an electric wire. It is a schematic sectional drawing which shows the 1st modification of the member for fixation. It is a schematic front view which shows the 2nd modification of the member for fixation. It is explanatory drawing which shows a mode that the member for fixation which concerns on a 2nd modification elastically deforms. It is a schematic sectional drawing which shows the fixing structure of a wire harness provided with the member for fixation which concerns on a 2nd modification.

{Embodiment}
A wire harness fixing structure according to the embodiment will be described below. FIG. 1 is a schematic exploded perspective view showing a wire harness fixing structure 1 according to an embodiment and a vehicle body 80 to which the structure is assembled. FIG. 2 is a schematic plan view showing the wire harness fixing structure 1 according to the embodiment. FIG. 3 is a cross-sectional view cut along line III-III in FIG.

A wire harness fixing structure 1 according to the embodiment includes a plate member 10 and a wire harness 20 fixed to the plate member 10 .

The plate member 10 is a member that is installed in a vehicle. Specifically, plate member 10 includes a first layer 12 and a second layer 14 . Furthermore, here the plate-like member 10 includes a third layer 16 .

The second layer 14 is formed softer than the first layer 12 . The third layer 16 is formed harder than the second layer 14 . As for the first layer 12 and the third layer 16, the first layer 12 may be harder, the third layer 16 may be harder, or they may have the same hardness.

The second layer 14 is laminated on the first main surface 12a side of the first layer 12 . The third layer 16 is laminated on the side opposite to the first layer 12 with respect to the second layer 14 . Therefore, the first layer 12, the second layer 14, and the third layer 16 are laminated in this order. In the following description, the plate member 10 is installed so that the surface of the first layer 12 on which the second layer 14 is located faces the interior of the room. The interior may be such that the surface on the side where the first layer 12 is located faces the interior of the room.

More specifically, here, the plate member 10 will be described as a roof lining. Therefore, the plate member 10 is attached to the inner surface of the ceiling portion 82 of the vehicle body 80 . However, the plate-like member 10 may also be a member such as a door trim that is installed inside another vehicle. At this time, the wire harness fixing structure 1 is suitable for a case where one surface of the plate member 10 is exposed indoors.

As such a roof lining, for example, there is known a roof lining that includes a foamed resin layer for the purpose of sound absorption or heat insulation, and reinforcing layers provided on both sides of the foamed resin layer to reinforce the foamed resin layer. In the following description, the second layer 14 of the plate member 10 is the foamed resin layer, and the first layer 12 and the third layer 16 are the reinforcing layers. Examples of resins that can be used as materials for the foamed resin layer include polyurethane-based resins, polypropylene-based resins, and modified polyphenylene ether-based resins. As such a reinforcing layer, it is conceivable that a plate material provided separately from the foamed resin layer is joined to the plate material constituting the foamed resin layer. In this case, the plate material constituting the reinforcing layer may be, for example, a plate material made of resin, a plate material made of glass fiber, carbon fiber, basalt fiber, natural fiber, organic fiber, etc., or a non-woven fabric. A so-called skin layer may also be considered as such a reinforcing layer. The skin layer is a hard layer formed on the surface with the same resin when forming the foamed resin layer. The first layer 12 and the third layer 16 may be of the same type or of different types.

If the plate member 10 is a roof lining, it is conceivable that a skin layer (not shown) is laminated on the side of the third layer 16 opposite to the second layer 14 . The skin layer is made of, for example, a nonwoven fabric, a woven fabric, a knitted fabric, or the like. The main surface of the skin layer opposite to the third layer 16 side is the indoor surface of the plate-like member 10 and is exposed indoors. It is also conceivable that a film or the like is laminated as a back layer on the opposite side of the first layer 12 to the second layer 14 . The first main surface 12 a of the first layer 12 , or the main surface of the back layer opposite to the first layer 12 when a back layer is laminated, is the surface of the plate member 10 on the vehicle body 80 side. Hereinafter, the interior-side surface of the plate-like member 10 may be simply referred to as the front surface, and the vehicle body 80-side surface of the plate-like member 10 may be referred to as the back surface.

The thickness of each layer in the plate-like member 10 is appropriately set based on the specifications required for the plate-like member 10 . Here, in the plate-like member 10, there may be a portion with a different thickness. For example, it is conceivable that the plate-like member 10 is once formed into a flat plate shape, and then partially bent and deformed by heating and cold pressing to be formed into a desired shape. In this case, the portion that has undergone bending deformation due to heating and cold pressing may become thinner than the portion that has not undergone bending deformation.

An opening 18 is formed in the plate member 10 . Such an opening 18 is, for example, a portion in which electrical equipment such as lighting is arranged. Therefore, the wire harness 20 is arranged on the plate member 10 so as to avoid the opening 18 .

FIG. 4 is a schematic perspective view showing the wire harness 20 according to the embodiment.

The wire harness 20 includes electric wires 22 and fixing members 50 . Here, the wire harness 20 further includes a wire fixing sheet portion 30 . Moreover, here, the wire harness 20 further includes a fixing member attachment sheet portion 40 .

The electric wire 22 is arranged along the plate member 10 . More specifically, the electric wire 22 is arranged so as to overlap the plate-like member 10 in at least a partial area along the longitudinal direction. It is conceivable to use an insulated wire including, for example, a core wire and an insulating coating covering the core wire as the wire 22 . The core wire is made of a conductive material such as copper or aluminum. The core wire may be a single wire or a twisted wire. The insulating coating may be formed by extruding a resin such as PVC (polyvinyl chloride), PE (polyethylene), or PP (polypropylene) on the outer periphery of the core wire, or may be applied to the outer periphery of the core wire. It may be formed by baking varnish (also called enamel paint) or the like.

At least one electric wire 22 should be included. Here, a plurality of electric wires 22 are included. A plurality of electric wires 22 are arranged in a flat state with respect to the plate member 10 . In the example shown in this embodiment, the plurality of electric wires 22 extend from the outside of the plate-like member 10 toward the plate-like member 10 in a bundled state. At this time, the plurality of electric wires 22 are branched on the way and extend toward a plurality of locations on the plate member 10 respectively. At this time, each branch wire portion 23 is branched at a position near the edge of the plate-like member 10, and while avoiding places such as the opening 18 that are unsuitable for wiring the electric wire 22, each branch wire portion 23 is connected to a counterpart member to be connected. It extends to the position of 90 through the shortest path possible. In the example shown in FIG. 2, the end portions of all the branch wire portions 23 are connected to the mating member 90 on the plate-like member 10, but some of the branch wire portions pass through the plate-like member and extend toward the rear of the vehicle. may extend to In addition to the illumination member, the mating member 90 may be, for example, a sensor, an antenna, or the like.

Each branch line portion 23 is connected to a mating member 90 mounted on a vehicle, for example, via a connector 24 provided at each end.

The wire fixing sheet portion 30 is formed in a sheet shape. The electric wire 22 is fixed to the electric wire fixing sheet portion 30 . Thus, the route of the electric wire 22 is regulated. The material forming the wire fixing sheet portion 30 is not particularly limited. For example, in the example shown in FIG. 4 , the electric wire 22 is fixed by being sewn to the electric wire fixing sheet portion 30 with a thread 32 . In this case, the wire fixing sheet portion 30 may be of any type as long as the wire 22 can be sewn thereon.

The electric wire 22 may be sewn using a sewing machine, or may be sewn by hand. In the case of sewing using a sewing machine, for example, the upper thread and the bobbin thread for the sewing machine are prepared separately from the electric wire 22, or the electric wire 22 is used for one of the upper thread and the bobbin thread in the sewing machine.

However, the method of fixing the wires 22 to the wire fixing sheet portion 30 is not limited to sewing. For example, the wires 22 may be fixed to the wire fixing sheet portion 30 by welding as in the wire harness 120 shown in FIG. In this case, the wire fixing sheet portion 30 may be any material as long as the wire 22 can be welded thereto. The welding method may be ultrasonic welding, laser welding, thermal welding, or the like. Further, for example, the electric wire 22 may be fixed to the electric wire fixing sheet portion 30 with an adhesive, an adhesive tape, or the like. Alternatively, the electric wire fixing sheet portion may include two layers of sheet materials, and the electric wires 22 may be fixed by being sandwiched between the two layers of sheet materials.

Here, the sheet material that constitutes the wire fixing sheet portion 30 is separately provided for each branch wire portion 23, but a plurality of branch wire portions 23 may be fixed to one sheet material.

Also, in the example shown in FIG. 2, the electric wire 22 is arranged in a straight line with respect to the electric wire fixing sheet portion 30, but there may be a portion that is bent in the middle. For example, the branch line portion 23a is bent to avoid the opening 18, and is fixed to different sheet materials before and after the bending. It may be fixed to the sheet material. Further, for example, if the extending direction of the electric wire 22 along the shortest route from the branch position is different from the fitting direction of the connector 24 provided at the end of the electric wire 22 and the receiving side connector provided on the mating member 90, It is conceivable that the portion of the electric wire 22 extending from the end connector 24 is bent. In this case, it is conceivable that the bent portion is fixed to the wire fixing sheet portion 30 .

The wire fixing sheet portion 30 includes a single sheet material covering the wires 22 from one side. The electric wire 22 is arranged and fixed on one main surface of the electric wire fixing sheet portion 30 . The wire harness 20 is arranged on the plate-like member 10 so that the sheet material faces the plate-like member 10 side. However, the wire harness 20 may be arranged on the plate-like member 10 so that the electric wire 22 is on the plate-like member 10 side. Also, the electric wire 22 may move from one main surface of the electric wire fixing sheet portion 30 to the other main surface on the way.

FIG. 6 is a schematic perspective view showing the fixing member 50 according to the embodiment.

The fixing member 50 is attached to the electric wire 22 . The fixing member 50 is a member that fixes the electric wire 22 to the plate member 10 . Specifically, the fixing member 50 includes a through-locking piece 52 , a restricting piece 54 and a column portion 56 . The fixing member 50 is made of resin, metal, or the like, for example. The fixing member 50 can be, for example, an integrally molded product using a mold.

The penetrating locking piece 52 is formed so that the tip portion 52a can penetrate the first layer 12 from the side of the second main surface 12b opposite to the first main surface 12a. That is, the through locking piece 52 is formed so as to be able to penetrate from the rear surface of the plate-like member 10 . The through locking piece 52 can be passed through a portion of the plate member 10 where no hole is formed. Further, the through locking piece 52 is locked to the first main surface 12a side while passing through the first layer 12 . The through locking piece 52 is formed, for example, in a conical shape (here, conical shape). By forming the penetrating locking piece 52 into a conical shape, it is easy to remove the mold when integrally molding the fixing member 50 using a mold. The conical bottom portion 52b is a portion that is connected to the column portion 56, and is a portion that penetrates the first layer 12 and engages with the first main surface 12a side. Also, the apex of the cone is the tip portion 52a of the through-locking piece 52. As shown in FIG.

The restricting piece 54 is provided with a gap from the through-locking piece 52 . The restricting piece 54 restricts the penetration locking piece 52 from hitting the surface of the plate member 10 . For example, the restricting piece 54 is hooked on the second main surface 12b of the first layer 12 or the back surface of the plate-like member 10 and thereby restricts the penetrating engaging piece 52 from advancing any further forward in the penetrating direction. Therefore, the shape and size of the restricting piece 54 are formed in the first layer 12 and the layer on the back side thereof when the through-locking piece 52 penetrates the first layer 12 and the layer on the back side therefrom. Any shape and size may be used as long as they can be caught on the periphery of the hole. Here, the restricting piece 54 is formed in a disc shape having the same axial center as that of the through-locking piece 52 . In this case, the restricting piece 54 is preferably formed to be the same as or larger than the through-locking piece 52 . As shown in FIG. 6, the outer edge of the main surface of the restricting piece 54 opposite to the surface connected to the column portion 56 (hereinafter sometimes referred to as the bottom surface of the restricting piece 54) is curved. A chamfered shape is preferred.

The column portion 56 connects the through locking piece 52 and the restricting piece 54 . Here, the column portion 56 is formed in a columnar shape (here, columnar shape) thinner than the bottom portion 52 b of the through-locking piece 52 and thinner than the restricting piece 54 . The axis of the column portion 56 coincides with the axis of the through-locking piece 52 and the axis of the restricting piece 54 . At least a portion of the column portion 56 is positioned within the first layer 12 when the fixing member 50 is inserted into the plate member 10 . Further, at least a part of the column portion 56 is positioned inside the fixing member mounting sheet portion 40 in a state where the fixing member 50 is mounted on the fixing member mounting sheet portion 40 .

The fixing member attachment sheet portion 40 is formed in a sheet shape. The fixing member attachment sheet portion 40 is a portion to which the fixing member 50 is attached. The fixing member attachment sheet portion 40 is interposed between the regulation piece 54 and the first layer 12 . For example, the fixing member attachment sheet portion 40 may be made of the same sheet material as the wire fixing sheet portion 30 . In this case, in one sheet material, a portion not used for fixing the electric wire 22, for example, a portion not sewn with the thread 32 or a portion not welded to the covering of the electric wire 22 is attached with the fixing member. It can be used as the seat portion 40 . In the example shown in FIG. 2, the fixing member attachment sheet portion 40 is provided on the side of the electric wire 22, that is, the position where the fixing member 50 is attached is the position on the side of the electric wire 22. is not a required configuration. For example, as shown in FIG. 7, the fixing member 50 may be attached between a plurality of electric wires 22 arranged in parallel. Further, for example, as shown in FIG. 8, the fixing member 50 may be attached below the electric wire 22 . In this case, for example, a part of the electric wire 22 along the longitudinal direction is not fixed to one sheet material, and the electric wire 22 is fixed in a portion overlapping the electric wire 22 in the one sheet material. It is conceivable that the fixing member 50 is attached to the portion not covered.

Further, for example, as shown in FIG. 9 , the fixing member attachment sheet portion 140 may be provided separately from the wire fixing sheet portion 30 and joined to the wire fixing sheet portion 30 . As a joining method, in addition to the adhesive 142, welding, double-sided adhesive tape, or the like can be considered. In the example shown in FIG. 9, the fixing member attachment sheet portion 140 is joined to the main surface 30b opposite to the main surface 30a on which the electric wire 22 is arranged with respect to the electric wire fixing sheet portion 30. It may be joined to the main surface 30a on which the electric wire 22 is arranged. In this case, the wire 22 may be sandwiched between the fixing member attachment sheet portion 140 and the wire fixing sheet portion 30 .

Also, as shown in FIG. 9, the fixing members 50 may be provided on both sides of the electric wire 22 . Of course, even when the fixing member mounting sheet portion 40 and the wire fixing sheet portion 30 are one sheet material as shown in FIG. good too.

When attaching the fixing member 50 to the fixing member attachment sheet portion 40, the sheet material forming the fixing member attachment sheet portion 40 may be provided with a hole in advance through which the fixing member 50 is inserted. It doesn't have to be. When a hole through which the fixing member 50 is inserted is formed in advance, the through-locking piece 52 may be inserted, or the restricting piece 54 may be inserted. If the hole is to pass through the through locking piece 52, it is conceivable that the through hole is formed in a circular shape smaller than the bottom portion 52b of the through locking piece 52, for example. Moreover, when the hole is for passing the regulation piece 54 , for example, it is conceivable that the hole is formed in the shape of a slit having a length dimension approximately equal to the diameter of the regulation piece 54 . In addition, if the hole through which the fixing member 50 is inserted is not formed in advance, it is conceivable that the through-locking piece 52 is pierced and penetrated.

Here, the operation of fixing the wire harness 20 to the plate member 10 using the fixing member 50 will be described. FIG. 10 is an explanatory diagram showing how the wire harness 20 is fixed to the plate member 10. As shown in FIG.

First, as shown in FIG. 3, the wire harness 20 in which the fixing member 50 is fixed to the electric wire 22 is prepared. Then, the wire harness 20 is arranged on the plate member 10 in a form corresponding to the arrangement form.

After that, as shown in FIG. 10 , the front end portion 52 a of the through-locking piece 52 of the fixing member 50 is directed toward the rear surface of the plate-like member 10 . At this time, the portion of the plate-like member 10 located in front of the through-locking piece 52 is a portion in which no hole is formed in advance. In this state, the bottom surface of the restricting piece 54 is pressed to insert the through-locking piece 52 into the plate member 10 from the rear surface.

When the restricting piece 54 is hooked on the rear surface of the plate member 10 via the fixing member attachment sheet portion 40, further pressing is stopped. As a result, as shown in FIG. 3, the through locking piece 52 passes through the first layer 12 and its bottom portion 52b is locked to the first main surface 12a side of the first layer 12 . Note that the bottom portion 52b of the through-locking piece 52 may engage with the first major surface 12a of the first layer 12 while entraining part of the second layer 14 .

Here, when the bottom portion 52b of the through-locking piece 52 is locked to the first main surface 12a of the first layer 12, for example, at least one of the following first locking mode or second locking mode occurs. presumed to be able to be caught.

First, the first locking mode is as follows. That is, when the through locking piece 52 is inserted into the first layer 12, the through locking piece 52 receives a reaction force from the first layer 12 and is elastically deformed so that the diameter of the bottom portion 52b is reduced. When the first layer 12 is penetrated in this state, the second layer 14 is softer than the first layer 12, so that the elastically deformed state of the through locking piece 52 is relaxed. Therefore, the bottom portion 52b of the through-locking piece 52 spreads outward from the hole formed in the first layer 12 as the through-locking piece 52 penetrates, and can be caught on the periphery of the hole. .

Also, the second locking mode is as follows. That is, when the through-locking piece 52 was inserted into the first layer 12, the first layer 12 received force from the through-locking piece 52 and was elastically deformed so as to spread radially with respect to the through-locking piece 52. state. In this state, the hole formed in the first layer 12 due to the penetration of the through-locking piece 52 is opened by the through-locking piece 52 due to the relaxation of the elastic deformation of the first layer 12 after the penetration of the through-locking piece 52 . It is smaller than the bottom portion 52b. Therefore, the bottom portion 52b of the through-locking piece 52 can be caught on the periphery of the hole.

At this time, as shown in FIG. 10, it is preferable that the penetration locking piece 52 can be easily penetrated through the first layer 12 by pressing the bottom surface of the regulation piece 54 with the finger WS of the operator. . The easiness of penetration of the through locking piece 52 into the first layer 12 depends on the shape of the through locking piece 52, especially the sharpness of the tip portion 52a of the through locking piece 52, and the degree of sharpness of the through locking piece 52 and the first layer. It is considered that it changes depending on the properties (hardness, elasticity) of the material constituting the 12, and the like.

Moreover, it is preferable that the penetration locking piece 52 locked to the first main surface 12a side of the first layer 12 is difficult to come off from the first layer 12 during use of the vehicle. The resistance of the penetration locking piece 52 locked on the first main surface 12a side of the first layer 12 to the first layer 12 depends on the shape of the penetration locking piece 52, particularly the first It can be considered that it varies depending on the spread of the bottom portion 52b of the through-locking piece 52 with respect to the hole formed in the layer 12, the properties (hardness, elasticity) of the material constituting the through-locking piece 52 and the first layer 12, and the like. .

Here, the sum of the length dimension of the column portion 56 and the height dimension of the through-locking piece 52 should be equal to or less than the sum of the thickness dimension of the fixing member attachment sheet portion 40 and the thickness dimension of the plate member 10. More preferably, the thickness is equal to or less than the sum of the thickness of the fixing member attachment sheet portion 40 and the thickness of the second layer 14 of the plate-like member 10 and the thickness of the back surface thereof. As a result, it is possible to more reliably prevent the penetration locking piece 52 from penetrating through the plate member 10 and being exposed on the surface. If the sum of the length dimension of the column portion 56 and the height dimension of the through locking piece 52 is greater than the sum of the thickness dimension of the fixing member mounting sheet portion 40 and the thickness dimension of the plate member 10, the through locking is performed. In order to prevent the piece 52 from penetrating through the plate-like member 10 and being exposed to the surface, it is conceivable to form the third layer 16 so that the fixing member 50 cannot penetrate.

In addition, the length dimension of the pillar portion 56 is preferably equal to or greater than the thickness dimension of the first layer 12 of the plate-shaped member 10 and the back surface side thereof. Among 10, it is more preferable that the thickness is equal to or greater than the sum of the thickness of the first layer 12 and the thickness of the back side thereof. As a result, the through-locking piece 52 can more reliably pass through the first layer 12 and its bottom portion 52b can be hooked on the first main surface 12a side of the first layer 12 .

It should be noted that, as described above, there may be cases where one plate-like member 10 has portions with different thicknesses. Even in this case, by interposing the fixing member mounting sheet portion 40 between the regulating piece 54 and the first layer 12, the fixing member mounting sheet portion 40 is sometimes compressed to absorb the difference in thickness. be able to. This makes it possible to use the single fixing member 50 for portions of the plate member 10 having different thicknesses.

After that, the wire harness 20 can be fixed to the plate-like member 10 by pushing all the fixing members 50 into the plate-like member 10 and locking them. When there are a plurality of branch wire portions 23, one branch wire portion 23 is arranged, and after the fixing member 50 provided on the branch wire portion 23 is pushed into the plate-like member 10, the other branch wire portions are 23 may be arranged, or the operation of pushing the fixing member 50 into the plate member 10 may be started after all the branch wire portions 23 are arranged.

According to the above aspect, the fixing member 50 can be directly penetrated through the first layer 12 of the plate-shaped member 10 and can be locked as it is. At this time, since the second layer 14 is softer than the first layer 12 , it is difficult for the through locking pieces 52 to penetrate the second layer 14 . Therefore, it is possible to suppress the penetration locking piece 52 from being exposed. As described above, the wire harness 20 can be easily fixed at the time of assembling the vehicle, even to an attachment target for which it is not appropriate to form a clamp hole and clamp the wire harness 20 . In addition, since the fixing member 50 can be attached to the electric wire 22 in advance, the number of man-hours required for assembling the vehicle can be reduced in this respect as well.

Also, if the through-locking piece 52 does not penetrate the second layer 14, the portion of the second layer 14 that is pushed by the through-locking piece 52 may swell. Even in this case, since the third layer 16 is harder than the second layer 14, swelling in the third layer 16 is suppressed. Therefore, if the third layer 16 side is the indoor side, it becomes difficult to identify the bulge related to the through locking piece 52 from the indoor side. Further, even if the through locking piece 52 penetrates the second layer 14, the presence of the third layer 16 can prevent the through locking piece 52 from being exposed. In this case, for example, the third layer 16 is harder than the through-locking piece 52 so that the penetration of the through-locking piece 52 reaching the third layer 16 is directly suppressed, or the third layer 16 is harder than the first layer 12 . It is conceivable to prevent penetration through the third layer 16 by the force applied when penetrating through the first layer 12 by being hard. Further, for example, by making the thickness of the third layer 16 thicker than the length dimension of the end of the through-locking piece 52 exposed from the second layer 14, the through-locking piece 52 can be prevented from penetrating through the third layer 16. can be considered.

Further, for example, when the fixing member 50 is formed of the same material in different shapes, the penetration performance (ease of penetration into the first layer 12) of the penetration locking piece 52 and the locking performance (ease of penetration into the first layer 12 after penetration). It is conceivable that there is a close relationship with the difficulty of coming off when locked to 12). Even in this case, when the electric wire 22 sways due to the vibration of the vehicle, the electric wire 22 is arranged in a flat state, so that the amplitude of the electric wire 22 can be kept small. Therefore, even when the locking performance of the through locking piece 52 is low, the fixing member 50 is less likely to come off from the plate member 10 . This makes it easier to achieve both required penetration performance and locking performance.

In addition, by providing the wire fixing sheet portion 30, the wire 22 can be easily arranged in a flat state. It is also possible to insert the fixing member 50 into an empty position of the sheet material forming the electric wire fixing sheet portion 30 and attach it.

Further, when the same type of fixing member 50 is used for a plurality of types of plate members 10 having different thicknesses of the first layer 12, the fixing member attachment sheet portion 40 can absorb the difference.

{Modification}
In the embodiment, the plurality of electric wires 22 are arranged in a flat state on the plate member 10, but this is not an essential configuration. The wires 22 may be bundled as shown in FIG. In the example shown in FIG. 11, the electric wires 22 are bundled so as to have a circular cross section, but they may be bundled so as to have a cross-sectional shape other than this.

Further, in the embodiment, the through locking piece 52 of the fixing member 50 has been described as having a conical shape, but this is not an essential configuration. For example, like the fixing member 150 shown in FIG. 12, the through locking piece 152 has a shape in which the outer edge of the bottom portion 152b protrudes toward the regulation piece 54 side, in other words, the bottom portion 152b side of the large pyramid It may be formed in a shape that does not include a cone having a height smaller than this. When the through locking piece 152 is formed in the shape shown in FIG. 12, the bottom portion 152b is easily elastically deformed in the direction of decreasing the diameter. It is also possible for the bottom portion 152b to elastically deform in the direction in which the diameter increases.

FIG. 13 is a schematic front view showing a second modification of the fixing member 50. As shown in FIG. The fixing member 250 according to the second modification differs from the fixing member 50 in that the locking state of the through locking piece can be maintained. Specifically, the fixing member 250 includes a first member 251 and a second member 260 .

The first member 251 includes a through locking piece 252 , a restricting piece 254 and a column portion 256 . The through locking piece 252, the restricting piece 254, and the column portion 256 have the same shape as the above-described penetrating locking piece 52, the restricting piece 54, and the column portion 56 (here, the column portion 256 is slightly thicker than the column portion 56). are formed). A hole 257 and a through hole 258 are formed in the column portion 256 of the first member 251 .

The hole 257 extends from the bottom opening of the restricting piece 254 toward the through locking piece 252 . Here, the hole 257 has a bottom, and the position of the bottom is the position of the through locking piece 252 . However, the position of the bottom of the hole 257 does not have to reach the position of the through locking piece 252 . Moreover, the hole 257 penetrates to the tip of the through-locking piece 252 and may be bottomless.

The through hole 258 is formed in such a manner as to reach from one position on the side surface of the column portion 256 to the opposite position. Hole 257 and through hole 258 are in communication. It should be noted that the through locking piece 252 may be formed in a shape extending from the column portion 256 to both sides instead of being conical. In this case, the through locking pieces are preferably formed at positions sandwiching the through hole 258 formed in the column portion 256 .

A hole 257 is formed in the first member 251 so that the bottom portion 252a of the penetration locking piece 252 becomes smaller when the penetration locking piece 252 penetrates the plate member 10 as shown in FIG. It becomes easy to elastically deform. Further, the formation of the through-hole 258 also allows the through-locking piece 252 to be elastically reduced in size when the through-locking piece 252 penetrates the plate member 10 as shown in FIG. Easy to transform. In addition, since the through hole 258 is formed, it becomes easier to remove the mold when forming the first member 251 using the mold for forming the recess 268 described later in the hole 257 .

The second member 260 includes an insertion portion 262 that can be inserted into the hole 257 and an insertion restricting piece 264 that restricts excessive insertion of the insertion portion 262 into the hole 257 .

The insertion portion 262 is formed in a bar shape. By inserting the insertion portion 262 into the hole 257, it is possible to suppress the elastic deformation of the through locking piece 252 in the locked state so that it becomes smaller. Therefore, the hole 257 and the insertion portion 262 function as a maintenance portion that maintains the locked state of the through locking piece 252 .

It is preferable that the first member 251 and the second member 260 can be locked in a state where the insertion depth of the insertion portion 262 into the hole 257 is the first depth. The first depth is the depth at which the through-locking piece 252 can be kept locked to the plate-shaped member 10 , and here is the depth at which the insertion portion 262 reaches the deep end of the hole 257 .

Furthermore, it is more preferable that the first member 251 and the second member 260 can be locked in a state where the insertion depth of the insertion portion 262 into the hole 257 is the second depth. The second depth is set shallower than the first depth. The second depth is a depth at which the insertion portion 262 inserted into the hole 257 does not easily inhibit the elastic deformation of the through-locking piece 252 when the first member 251 is passed through the plate member 10 . For example, a state in which the first member 251 of the fixing member 250 is attached to the fixing member attachment sheet portion 40 and the second member 260 is locked to the first member 251 at the second depth position is the wire harness 220. It is conceivable to assume the form In this case, the wire harness 220 is transported to the vehicle assembly plant, and the second member 260 is further inserted into the first member 251 after the through-locking piece 252 is penetrated and locked to the plate-like member 10 . The wire harness fixing structure 201 is formed by locking the second member 260 to the first member 251 at the position of the first depth.

As a configuration in which the first member 251 and the second member 260 can be locked with the insertion depth of the insertion portion 262 into the hole 257 at a first depth and a second depth, for example, the inner peripheral surface of the hole 257 It is conceivable that the projection 267 is formed on one side of the outer peripheral surface of the insertion portion 262 and the concave portion 268 to which the projection 267 engages is formed on the other side. Here, a concave portion 268 is formed on the inner peripheral surface of the hole 257 . A protrusion 267 is formed on the outer peripheral surface of the insertion portion 262 . Here, two recesses 268a and 268b are formed spaced apart along the depth direction of the hole 257. As shown in FIG. The state in which the protrusion 267 is engaged with the concave portion 268a formed at a position near the back of the hole 257 is the state in which the insertion depth of the insertion portion 262 into the hole 257 is the first depth. A state in which the protrusion 267 is engaged with the recess 268b formed near the entrance of the hole 257 is a state in which the insertion depth of the insertion portion 262 into the hole 257 is the second depth.

At this time, the projection 267 and the recess 268 have a larger locking force for locking the second member 260 to the first member 251 toward the rear in the insertion direction than toward the front in the insertion direction. In other words, the projection 267 and the recess 268 are effective in preventing the second member 260 from slipping off from the first member 251 . Here, the insertion restricting piece 264 compensates for restricting forward movement of the second member 260 in the insertion direction with respect to the first member 251 at the first depth.

The insertion restricting piece 264 is, for example, formed in a flat plate shape (disc shape here) like the restricting piece 254 . Although the insertion restricting piece 264 is formed smaller than the restricting piece 254 here, it may be formed to have the same size as the restricting piece 254 or may be formed to be larger than the restricting piece 254 . The insertion restricting piece 264 can be hooked on the periphery of the hole 257 when the insertion portion 262 is inserted into the hole 257 to the first depth. This suppresses further insertion of the insertion portion 262 into the hole 257 .

Here, the shape of the inner peripheral surface of the hole 257 and the shape of the outer peripheral surface of the insertion portion 262 are not particularly limited, and may be circular or square. Also, the shape of the inner peripheral surface of the hole 257 and the shape of the outer peripheral surface of the insertion portion 262 may be the same or different.

Also, the insertion portion 262 may be formed to have the same size as the hole 257 or may be formed to be larger than the hole 257 . When the insertion portion 262 is formed to be larger than the hole 257 , the through-locking piece 252 may be formed so as to expand when the insertion portion 262 is inserted. Also, the insertion portion 262 may be formed smaller than the hole 257 as long as it is possible to maintain the locking state of the through locking piece 252 to the plate-like member 10 .

Also, it is conceivable that the relative sizes of the insertion portion 262 and the hole 257 are formed to differ along the longitudinal direction. In this case, for example, the insertion portion is formed to be the same size as or smaller than the hole in the corresponding portion between the insertion portion and the hole from when the insertion portion is first inserted into the hole to the position of the second depth. In addition, it is conceivable that the insertion portion is formed larger than the hole in the portion corresponding to the range from the second depth to the first depth. In this case, since the insertion portion is equal to or smaller than the hole up to the position of the second depth, the insertion force can be reduced. From the second depth position to the first depth position, since the insertion portion is larger than the hole, the insertion force can be increased, thereby suppressing erroneous insertion before locking to the plate member 10 . In addition, after being locked to the plate-like member 10 , the portion of the insertion portion that is larger than the hole can spread the through locking piece 252 .

In order to fix the electric wire 22 to the plate-shaped member 10 using the fixing member 250, the following should be performed.

That is, first, the first member 251 of the fixing member 250 is attached to the fixing member attachment sheet portion 40 . Then, the wire harness 220 with the first member 251 attached to the fixing member attachment sheet portion 40 is transported to a vehicle assembly plant. At this time, as described above, the second member 260 is preferably transported while being locked with the first member 251 at the second depth. However, the second member 260 may be conveyed separately from the first member 251 in a state in which it is not engaged with the first member 251 .

Next, in a vehicle assembly factory, the first member 251 of the wire harness 220 is passed through the plate member 10 while the wire harness 220 is arranged along the plate member 10 . At this time, as described above, since the hole 257 and the through hole 258 are formed, the through locking piece 252 is easily elastically deformed so as to become smaller. Therefore, the first member 251 can be easily passed through the plate member 10 .

After the first member 251 is passed through the plate member 10, the second member 260 is further inserted into the first member 251 and locked at the first depth position. As a result, as shown in FIG. 15, the fixing member 250 is penetrated and locked to the plate member 10, and the locked state is maintained.

Note that the configurations described in the above embodiments and modifications can be appropriately combined as long as they do not contradict each other.

This specification includes the following disclosures. The disclosure below should be understood in view of the problem of providing a technique for easily fixing a wire harness during assembly of a vehicle, even to an attachment target for which clamping by forming a clamp hole is not appropriate. can be done.

A wire harness fixing structure according to a first aspect includes a first layer and a second layer that is laminated on the first main surface side of the first layer and is softer than the first layer, and is installed in a vehicle. a wire harness that includes a plate-shaped member that extends along the plate-shaped member, an electric wire arranged along the plate-shaped member, and a fixing member that is attached to the electric wire and fixes the electric wire to the plate-shaped member; The member is formed so that the tip portion can penetrate from the side of the second main surface opposite to the first main surface with respect to the first layer, and in a state of penetrating, the tip portion is on the side of the first main surface. a locking through-locking piece, a regulating piece provided at a distance from said through-locking piece and regulating said through-locking piece against the surface of said plate member, and said through-locking piece. A post connecting the piece and the regulation piece is provided.

A wire harness fixing structure according to a second aspect is the wire harness fixing structure according to the first aspect, wherein the plate-like member is disposed on the side opposite to the first layer side with respect to the second layer. and further comprising a third layer laminated to and harder than the second layer.

A wire harness fixing structure according to a third aspect is the wire harness fixing structure according to the first or second aspect, wherein the electric wires are arranged in a flat state.

A wire harness fixing structure according to a fourth aspect is the wire harness fixing structure according to the third aspect, wherein the wire harness is formed in a sheet shape, and the electric wires are fixed by sewing or welding. Further includes a wire fixing seat portion.

A wire harness fixing structure according to a fifth aspect is the wire harness fixing structure according to any one of the first to fourth aspects, wherein the wire harness is formed in a sheet shape, and the fixing member is attached and is interposed between the restricting piece and the first layer.

A wire harness fixing structure according to a sixth aspect is the wire harness fixing structure according to any one of the first to fifth aspects, wherein the fixing member includes the through locking piece and the column portion a first member having a hole formed in the pillar; and a second member including an insertion portion inserted into the hole to maintain a state in which the through locking piece is locked to the plate member; Prepare.

A fixing member according to a seventh aspect comprises a first layer and a second layer that is laminated on the first main surface side of the first layer and is softer than the first layer. A fixing member that is attached to an electric wire arranged along a shaped member and fixes the electric wire to the plate-shaped member, the tip portion of which is on the side opposite to the first main surface with respect to the first layer a through-locking piece that is formed so as to be able to penetrate from the second main surface side of and is locked to the first main surface side in a state of being penetrated; a regulating piece for regulating the penetration locking piece against the surface of the plate-like member; and a column portion for connecting the piercing locking piece and the regulation piece.

A wire harness according to an eighth aspect includes the fixing member according to the seventh aspect, and an electric wire to which the fixing member is attached.

According to the first to eighth aspects, the fixing member can be directly penetrated through the first layer of the plate-shaped member and can be locked as it is. At this time, since the second layer is softer than the first layer, it is difficult for the penetration locking piece to penetrate the second layer. Therefore, it is possible to suppress the penetration locking piece from being exposed. As described above, the wire harness can be easily fixed at the time of assembling the vehicle even to an attachment target for which it is not appropriate to form a clamp hole and clamp the wire harness.

If the penetrating locking piece does not penetrate the second layer, it is conceivable that the portion of the second layer that is pushed by the penetrating locking piece swells. Even in this case, according to the second aspect, since the third layer is harder than the second layer, swelling in the third layer is suppressed. Therefore, if the third layer side is the indoor side, it becomes difficult to identify the bulge associated with the through-locking piece from the indoor side. Further, even if the through-locking piece penetrates the second layer, the presence of the third layer can prevent the through-locking piece from being exposed. In this case, for example, it is conceivable that the third layer is harder than the through-locking piece so as to directly suppress penetration of the through-locking piece reaching the third layer. Further, for example, it is conceivable that the penetration locking piece is prevented from penetrating the third layer by making the thickness of the third layer larger than the length dimension of the end of the penetration locking piece exposed from the second layer.

For example, when the fixing member is made of the same material and has different shapes, the penetration performance of the penetration locking piece (ease of penetration into the first layer) and locking performance (locking into the first layer after penetration) It is conceivable that there is a close relationship that is contradictory to the difficulty of falling out in the event. Even in this case, according to the third aspect, when the wires are arranged in a flat state and the wires sway due to the vibration of the vehicle, it is possible to suppress the amplitude of the sway. Therefore, even if the locking performance of the through locking piece is low, the fixing member is less likely to come off from the plate member. This makes it easier to achieve both required penetration performance and locking performance.

In particular, according to the fourth aspect, the wires can be easily arranged in a flat state. It is also possible to insert the fixing member into the electric wire fixing sheet portion for attachment.

In particular, according to the fifth aspect, when the same type of fixing member is used for a plurality of types of plate-shaped members having different thicknesses of the first layer, the fixing member attachment sheet portion can absorb the difference. .

In particular, according to the sixth aspect, by inserting the insertion portion into the hole, it becomes easier to maintain the state in which the through-locking piece is locked to the plate-like member. Further, the penetration locking piece can be made smaller in a state where the insertion portion is in front of the position where the locking state of the penetration locking piece can be maintained with respect to the hole. As a result, the penetration locking piece can be easily penetrated through the plate member.

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.

1 wire harness fixing structure 10 plate member 12 first layer 12a first main surface 12b second main surface 14 second layer 16 third layer 18 opening 20 wire harness 22 electric wire 24 connector 30 electric wire fixing sheet portion 40 for fixing Member mounting sheet portion 50 Fixing member 52 Penetration locking piece 52a Tip portion 52b Bottom portion 54 Regulating piece 56 Column portion 80 Vehicle body 82 Ceiling portion 90 Mating member

Claims (5)

A wire harness arrangement structure in which a wire harness having a plurality of electric wires and a plurality of sheets is arranged in a roof lining,
the plurality of electric wires branch from a bundled state into a plurality of branch wire portions at a single branch portion provided on the roof lining;
each of the plurality of branch wire portions is fixed to a corresponding one of the plurality of seats and extends in a flat state on the roof lining from the branch portion toward a respective connection partner;
The plurality of branch wire portions includes a first branch wire portion in which a first sheet and a second sheet as the sheet are provided at intervals along the direction in which the electric wire extends,
In the first sheet and the second sheet, the fixed wires are the same,
A wire harness arrangement structure, wherein a path bending portion is provided between the first seat and the second seat so that the electric wire bends along the roof lining. The arrangement structure of the wire harness according to claim 1,
A wire harness arrangement structure having three or more branch wire portions. The arrangement structure of the wire harness according to claim 1 or claim 2,
The arrangement structure of the wire harness, wherein the plurality of branch wire portions includes a second branch wire portion fixed to only one of the straight sheets extending from the branch portion toward the connection partner. The arrangement structure of the wire harness according to claim 3,
A wiring harness arrangement structure in which a plurality of the second branch wire portions are provided. The arrangement structure of the wire harness according to any one of claims 1 to 4,
A path that linearly connects the branch portion to the connection partner of the first branch wire portion interferes with the opening of the roof lining,
The wire harness arrangement structure, wherein the first branch wire portion avoids the opening portion by the path bending portion.

Images