JP7617793B2 - Wire routing structure - Google Patents

Description

This invention relates to a wiring structure for a flexible flat cable that supplies power to a sliding seat that is supported and slidable along the longitudinal direction of a fixed rail fixed to the vehicle body, for example in a vehicle such as an automobile.

Nowadays, vehicles such as automobiles are equipped with a power supply device that supplies electricity to the sliding seat from the vehicle body, for example by electrifying the sliding seat or by attaching electrical equipment to the sliding seat.

For example, Patent Document 1 discloses a vehicle seat that includes a slide rail fixed to the vehicle body, a slider that supports the slide seat and slides on the slide rail, and a power supply device that supplies electricity to the slide seat.

In this patent document, a ribbon-shaped electric wire that connects a first connector fixed to a slider and a second connector fixed to the end of a slide rail is housed inside the slide rail in an inverted, approximately U-shaped state.

However, in an electric wire routing structure such as that of Patent Document 1, the ribbon electric wire is pulled in the longitudinal direction of the slide rail as the slide sheet moves forward and backward. Furthermore, in Patent Document 1, the ribbon electric wire routed approximately parallel to the longitudinal direction is connected to the second connector, so that a tensile force in the longitudinal direction is likely to act directly on the electric wire connection portion, which is the connection point between the ribbon electric wire and the second connector.

For this reason, in Patent Document 1, a tensile force in the longitudinal direction acts directly on the electric wire connection portion, which is the connection point between the ribbon electric wire and the second connector, and there is a risk of unintended malfunctions occurring in the electric wire connection portion.

JP 2019-6274 A

In view of the above problems, the present invention aims to provide an electric wire routing structure that can prevent malfunctions of electric wire connections caused by pulling forces.

This invention provides an electric wire arrangement structure that supplies electricity to a sliding seat that is supported and can slide back and forth along the longitudinal direction of a fixed rail fixed to the vehicle body, by arranging an electric wire whose one end is electrically connected to a vehicle body side electric wire and whose other end is electrically connected to a seat side electric wire, wherein at least one end of the electric wire is connected to another electric wire at a fixed electric wire connection portion, and a bending portion is provided that bends the electric wire near the electric wire connection portion in a bending direction that intersects with the direction of action of a tensile force acting on the electric wire , and a plurality of the bending portions are provided at predetermined intervals, and adjacent bending portions are formed so that the bending directions of the electric wires are opposite to each other .

The electric wire may be a ribbon-shaped electric wire in which a plurality of conductors are arranged in parallel, or an electric wire having a round cross section in which a plurality of conductors are bundled together.
The electric wire connection portion connects, for example, a belt-shaped electric wire and an electric wire having a round cross section, or connects belt-shaped electric wires together, or connects electric wires having a round cross section together.

According to this invention, the electric wire routing structure can prevent malfunctions of the electric wire connection portion due to pulling force.
Specifically, by providing a bending portion that bends the electric wire near the electric wire connection portion, the electric wire routing structure can receive the tensile force acting on the electric wire at the bending portion and reduce the tensile force applied to the electric wire connection portion, thereby preventing malfunction of the electric wire connection portion due to the tensile force.

In addition, when a pressing force acting on the electric wires as the slide sheet advances and retreats acts on the electric wires, the portion of the electric wire bent at the bending section can absorb the pressing force. Therefore, the electric wire routing structure can reduce the pressing force acting on the electric wires near the electric wire connection section, and prevent the electric wires near the electric wire connection section from being deformed, for example, by buckling.

Further, a plurality of the bent portions are provided at predetermined intervals, and adjacent bent portions are formed such that the bent directions of the electric wire are opposite to each other.
According to this configuration, since adjacent bent portions are formed so that the wires are bent in opposite directions, the wire routing structure can bend the wires into, for example, a substantially crank-like or bellows-like shape.

Therefore, the electric wire routing structure can reliably receive the tensile force acting on the electric wires at the multiple bent portions, and can further prevent the tensile force in the longitudinal direction from being directly applied to the electric wire connection portion.
This allows the electric wire routing structure to further reduce the pulling force applied to the electric wire connection portion.

As a further aspect of the present invention, the electric wire may be a strip-shaped electric wire having a conductor sandwiched between insulating sheets, and the bent portion may be configured to bend the strip-shaped electric wire in a thickness direction.
According to this configuration, the electric wire routing structure can reliably bend the ribbon electric wire along the bent portion and can ensure a contact area between the bent portion and the ribbon electric wire, so that the electric wire routing structure can reliably receive the tensile force acting on the electric wire at the bent portion and reliably reduce the tensile force acting on the electric wire connection portion.

In another aspect of the present invention, the separate electric wire may be a coated electric wire with a round cross section, in which the conductor is coated with an insulating coating, and the electric wire connection portion may be configured such that the conductor of the ribbon electric wire and the conductor of the coated electric wire are connected via a connection terminal.

With this configuration, the electric wire routing structure can easily connect ribbon electric wires and coated electric wires of different wire types via the connection terminals, and can improve the connection strength compared to when the ribbon electric wires and coated electric wires are directly connected.

As a result, the electric wire routing structure can prevent the disconnection of the ribbon electric wire and the insulated electric wire of different wire types through the cooperation of the bent portion and the connection terminal. Therefore, the electric wire routing structure can ensure a stable connection state of the electric wire connection part even when connecting a ribbon electric wire and an insulated electric wire of different wire types.

As a further aspect of the present invention, a tubular protective tube may be provided to cover the ribbon-shaped electric wire.
According to this configuration, the electric wire routing structure can prevent damage to the belt-shaped electric wire due to sliding against the bent portion, and therefore the electric wire routing structure can ensure stable conductivity of the belt-shaped electric wire.

As a further aspect of the present invention, the bent portion may restrict bending of the ribbon-shaped electric wire with a bending radius equal to or larger than a thickness of the ribbon-shaped electric wire.
According to this configuration, the electric wire routing structure can prevent the belt-shaped electric wire from being bent so as to bend, so that stable conductivity of the belt-shaped electric wire can be reliably ensured.
Furthermore, for example, by providing a curved surface at the bent portion to regulate the bending radius of the ribbon-shaped electric wire, the electric wire routing structure can further prevent the ribbon-shaped electric wire from being damaged due to strong contact with the bent portion.

As a further aspect of the present invention, the bent portion may be provided with a pair of walls for sandwiching the bent strip-shaped electric wire therebetween.
According to this configuration, the electric wire routing structure can reliably bend the ribbon-shaped electric wire and can restrict the movement of the ribbon-shaped electric wire by the pair of walls, so that the electric wire routing structure can more reliably reduce the pulling force applied to the electric wire connection portion.

In another aspect of the invention, at least one of the pair of walls may be provided with a rib that stands toward the other wall and extends in the width direction of the ribbon-shaped electric wire.

With this configuration, the electric wire routing structure can reliably restrict the movement of the ribbon electric wire near the electric wire connection portion by the pair of walls. Therefore, when a tensile force acts on the ribbon electric wire, the electric wire routing structure can further reliably reduce the tensile force applied to the electric wire connection portion.

In another embodiment of the present invention, a bellows-shaped protective tube is provided that covers the ribbon-shaped electric wire and is fixed to the ribbon-shaped electric wire, and has continuous projections and recesses along the longitudinal direction of the ribbon-shaped electric wire, and the rib and the recesses of the protective tube may engage with each other.

With this configuration, the electric wire routing structure can more reliably restrict the movement of the electric wire ribbon near the electric wire connection portion by engaging the rib with the recess of the protective tube fixed to the electric wire ribbon. Therefore, the electric wire routing structure can more reliably reduce the pulling force applied to the electric wire connection portion when a pulling force acts on the electric wire ribbon.

In another embodiment of the present invention, the vehicle body side end of the ribbon-shaped electric wire is connected to the vehicle body side electric wire via the vehicle body side electric wire connection part, and the seat side end of the ribbon-shaped electric wire is connected to the seat side electric wire via the seat side electric wire connection part, and a storage case may be provided outside the fixed rail that houses the vehicle body side electric wire connection part and has a storage part that can pull out and store the ribbon-shaped electric wire as the sliding seat advances and retreats.

With this configuration, the electric wire connection portion and the ribbon electric wire are housed in the housing of the housing case, so the electric wire routing structure can prevent the electric wire connection portion and the ribbon electric wire from being damaged by contact with a foreign object, or from being damaged by the application of an unintended external force to the electric wire connection portion and the ribbon electric wire. Therefore, the electric wire routing structure can prevent unintended malfunctions from occurring in the electric wire connection portion and the ribbon electric wire.

As a further aspect of the present invention, the ribbon-shaped electric wire may be accommodated in the accommodating portion while being bent back into a U-shape.
According to this configuration, the electric wire routing structure can easily pull out and store the ribbon-shaped electric wire as the slide seat advances and retreats.

In another aspect of the invention, the ribbon electric wire is led out from the storage case, and the led out portion is arranged inside the fixed rail, and the storage case may be provided with a guide portion that houses the ribbon electric wire and guides the ribbon electric wire toward the inside of the fixed rail.

With this configuration, the electric wire routing structure can guide the ribbon electric wire between the storage section and the fixed rail by the guide section, making it easier to pull out and store the ribbon electric wire.

Furthermore, since the ribbon electric wire is accommodated in the guiding portion, the electric wire routing structure can reliably prevent the ribbon electric wire from being damaged due to contact with foreign objects or due to unintended external forces being applied to the ribbon electric wire between the accommodating portion and the fixed rail.
Therefore, the electric wire routing structure can reliably prevent unintended defects from occurring in the belt-shaped electric wire.

In accordance with the present invention, the guide portion may be formed of a straight portion extending linearly along the longitudinal direction of the fixed rail to the inside of the fixed rail, and a curved portion curved from the accommodating portion toward the straight portion.
According to this configuration, the curved portion of the guide portion enables the electric wire routing structure to more smoothly guide the ribbon-shaped electric wire led out from the housing portion.

Furthermore, the straight portion of the guide section allows the electric wire routing structure to reliably guide the electric wire ribbon to the inside of the fixed rail without exposing the electric wire ribbon to the outside between the storage section and the fixed rail. Therefore, the electric wire routing structure can more reliably prevent the electric wire ribbon from being damaged by contact with foreign objects or by the application of unintended external forces to the electric wire ribbon.

The present invention provides a wire routing structure that can prevent problems with wire connections caused by pulling forces.

FIG. 2 is an explanatory diagram illustrating an outline of a seat slide mechanism. FIG. 4 is a cross-sectional view showing the cross-sectional shape of the fixed rail in a longitudinal cross section along the width direction. FIG. 4 is a side view showing the appearance of the power supply device as viewed from the width direction. FIG. 2 is an exploded perspective view showing the external appearance of the power supply device in a disassembled state. FIG. 4 is an explanatory diagram illustrating an outline of an electric wire connection portion. 4 is a cross-sectional view taken along the line AA in FIG. 3 . FIG. 4 is a side view showing the power supply device with the cover removed. FIG. 4 is an external perspective view showing the external appearance of a front part of a case body of the first storage case. FIG. 4 is an external perspective view showing the external appearance of a case body of the second housing case. FIG. 11 is an explanatory diagram illustrating an outline of a seat slide mechanism according to another embodiment.

An embodiment of the present invention will now be described with reference to the drawings.
In this embodiment, a wire arrangement structure of a flexible flat cable that is arranged to supply power to a slide seat that is supported and slidable along the longitudinal direction of a fixed rail fixed to a vehicle body in a vehicle such as an automobile will be described with reference to Figures 1 to 9.

Note that Fig. 1 shows an explanatory diagram outlining the seat slide mechanism 1, Fig. 2 shows a cross-sectional view of the fixed rail 2 in a longitudinal section along the width direction Y, Fig. 3 shows a side view of the power supply device 5 as seen from the width direction Y, and Fig. 4 shows an exploded perspective view of the power supply device 5 in a disassembled state.

Furthermore, FIG. 5 is an explanatory diagram outlining the electric wire connection portion, FIG. 6 is a cross-sectional view taken along the line A-A in FIG. 3, and FIG. 7 is a side view of the power supply device 5 with the lids 82 and 92 removed.
In addition, FIG. 8 shows an external perspective view of the front part of the case body 81 of the first storage case 80, and FIG. 9 shows an external perspective view of the case body 91 of the second storage case 90.

In addition, the upper side in FIG. 1 is the upper side of the power supply device 5, and the lower side in FIG. 1 is the lower side of the power supply device 5. The arrow X in the figure indicates the front-to-rear direction (hereinafter referred to as the front-to-rear direction X), which is the longitudinal direction of the fixed rail 2, and the arrow Y indicates the direction perpendicular to the front-to-rear direction X in a plan view (hereinafter referred to as the width direction Y).

Furthermore, in the front-rear direction X, the direction from the right side to the left side in FIG. 1 is the front, and the direction from the left side to the right side in FIG. 1 is the rear. In addition, the state as seen from the width direction Y will be described as a side view.

First, as shown in FIG. 1, the seat slide mechanism 1 includes a pair of left and right fixed rails 2 extending in the front-rear direction X, a pair of left and right sliders 3 that slide on the fixed rails 2, and a slide seat 4 that is supported by the left and right sliders 3 and can move forward and backward in the front-rear direction X.

Furthermore, as shown in FIG. 1, the seat slide mechanism 1 includes a power supply device 5 that supplies electricity to the slide seat 4, which is supported so as to be able to slide back and forth along the longitudinal direction of the fixed rail, i.e., the front-rear direction X.

Specifically, as shown in FIG. 1, the pair of fixed rails 2 are arranged at a predetermined interval in the width direction Y, and are fixed to the body of the vehicle via support brackets (not shown).
As shown in FIG. 2, in a vertical cross section taken along the width direction Y, the fixed rail 2 is formed into an open cross-sectional shape in which the center in the width direction Y of the upper surface of the substantially rectangular cross section is open.

More specifically, as shown in FIG. 2, the fixed rail 2 is formed of a pair of outer surface portions 2a that face each other at a predetermined distance in the width direction Y, a pair of inner surface portions 2b that face each other on the inside of the outer surface portions 2a, a bottom surface portion 2c that connects the lower ends of the outer surface portions 2a, and a pair of upper surface portions 2d that connect the upper ends of the outer surface portions 2a to the upper ends of the inner surface portions 2b.

Due to this configuration, as shown in FIG. 2, a slit extending in the front-rear direction X is formed in the fixed rail 2 at approximately the center in the width direction Y by a pair of inner side surface portions 2b.
The slider 3 is configured to be slidable along the front-rear direction X in a slit of the fixed rail 2 that is formed by the pair of inner side surface portions 2b and extends in the front-rear direction X.

The sliding seat 4 is fixed to the upper part of the slider 3 and is arranged so as to be able to slide integrally with the slider 3 in the front-rear direction X. The sliding seat 4 has built-in electrical equipment such as an electrically operated seat lifter mechanism and reclining mechanism, or a seat heater.

As shown in Figs. 1 and 3, the power supply device 5 is disposed below the front of one of the fixed rails 2 so as to be located between the fixed rail 2 and the floor surface (not shown) of the vehicle.
As shown in Figures 1 and 3, one end of this power supply device 5 is electrically connected to a vehicle body side wire harness 6 and the other end is electrically connected to a seat side wire harness 7, and is configured to be able to supply electricity to the sliding seat 4 while following the sliding movement of the slider 3.

The vehicle body side wire harness 6 and the seat side wire harness 7 are connected, for example, to the vehicle battery and control device, and the seat side wire harness 7 is connected to electrical equipment provided in the sliding seat 4.

In more detail, as shown in Figures 3 and 4, the power supply device 5 includes a first connector 10 that connects the vehicle body side wire harness 6 to the seat side wire harness 7, a first wire harness 20, a vehicle body side electric wire connection portion 30, a cable arrangement body 40, a seat side electric wire connection portion 50, a second wire harness 60, and a second connector 70.

Furthermore, as shown in Figs. 3 and 4, the power supply device 5 includes a first housing case 80 in which the vehicle body side electric wire connection part 30 and the cable arrangement body 40 are housed, and a second housing case 90 in which the seat side electric wire connection part 50 and the cable arrangement body 40 are housed.

As shown in Figs. 3 and 4, one end of the first wire harness 20 is connected to the vehicle body side wire harness 6 via the first connector 10, and the other end is connected to the vehicle body side electric wire connection part 30. This first wire harness 20 is composed of multiple bundled electric wires with a round cross section whose conductors are covered with an insulating coating.

As shown in FIG. 4, the vehicle body side electric wire connection portion 30 is fixed to the vehicle body via the first housing case 80, and electrically connects the first wire harness 20 and the cable arrangement body 40.

As shown in FIG. 5, the vehicle body side electric wire connection portion 30 is composed of a connection terminal 31 that connects the first wire harness 20 to the flexible flat cable 41 that constitutes the cable arrangement body 40, and a terminal holder (not shown) that houses and holds the connection terminal 31.

More specifically, as shown in FIG. 5, the connection terminal 31 is integrally formed with a coating crimping portion 31a that crimps and holds the insulating coating of the coated electric wire 21 of the first wire harness 20, a conductor crimping portion 31b that crimps and holds the conductor of the coated electric wire 21, and a welding portion 31c to which the flexible flat cable 41 is welded.

As shown in FIG. 5, the connection terminal 31 is electrically connected by welding, for example by resistance welding, the flat rectangular conductor 41a of the flexible flat cable 41 exposed by partially removing the laminate sheet to the welded portion 31c of the connection terminal 31 to which the coated electric wire 21 is connected.

As shown in FIG. 4, the multiple cable arrangement bodies 40 are generally ribbon-shaped electric wires, one end of which is connected to the first wire harness 20 via a fixed vehicle body side electric wire connection part 30, and the other end of which is connected to the second wire harness 60 via a seat side electric wire connection part 50.

As shown in FIG. 6, this cable arrangement body 40 is composed of multiple flexible flat cables 41 and a protective tube 42 that integrally covers the multiple flexible flat cables 41. The multiple flexible flat cables 41 are stacked in the thickness direction of the flexible flat cables 41 and bundled with adhesive tape.

Specifically, as shown in FIG. 5, the flexible flat cable 41 is formed by arranging flat conductors 41a, each of which has a substantially rectangular cross section and extends in a predetermined direction, in the width direction Y, and sandwiching the juxtaposed flat conductors 41a between insulating laminate sheets. This flexible flat cable 41 is formed to be longer than the travel distance of the slider 3 in the forward/rearward direction X.

6 and 7, the protective tube 42 is a tube-shaped protective member that covers the cable routing body 40. As shown in Fig. 4 and 7, the protective tube 42 covers the area of the cable routing body 40 from the vicinity of the vehicle body side electric wire connection portion 30 to the vicinity of the seat side electric wire connection portion 50, and an end of the protective tube 42 is fixed to the flexible flat cable 41 using, for example, an adhesive tape.
Although detailed illustration is omitted, the protective tube 42 is formed in a bellows shape having continuous projections and recesses along the longitudinal direction of the cable routing body 40 .

As shown in Figs. 4 and 7, the cable arrangement body 40 is arranged inside the first housing case 80 from the vehicle body side electric wire connection part 30, approximately parallel to the fore-and-aft direction X, through the upper part of the first housing case 80, and toward the rear. Furthermore, the cable arrangement body 40 is folded back approximately in a semicircle toward the rear and downward via the inversion part 40a, and then arranged approximately parallel to the fore-and-aft direction X, through the lower part of the first housing case 80, and toward the front.

The cable arrangement body 40 is folded back in a generally semicircular shape toward the front and upper side in front of the vehicle body side electric wire connection part 30, is led out of the first housing case 80, and is arranged inside the second housing case 90, approximately parallel to the fore-and-aft direction X, through the inside of the fixed rail 2.

As a result, a pulling force caused by the sliding sheet 4 moving back and forth acts from the front to the rear on the portion of the cable arrangement body 40 that passes through the top of the first storage case 80 approximately parallel to the front-to-rear direction X. Furthermore, a pulling force caused by the sliding sheet 4 moving back and forth acts from the rear to the front on the portion of the cable arrangement body 40 that passes through the inside of the fixed rail 2 approximately parallel to the front-to-rear direction X.

As shown in Figures 3 and 4 , the seat-side wire connection portion 50 electrically connects the cable routing body 40 and the second wire harness 60, and is connected to the slider 3 via the second accommodating case 90.
In addition, since the seat side electric wire connection portion 50 has the same configuration as the above-mentioned vehicle body side electric wire connection portion 30, a detailed description thereof will be omitted.

As shown in Figs. 3 and 4, one end of the second wire harness 60 is connected to the seat-side electric wire connection portion 50, and the other end is connected to the seat-side wire harness 7 via the second connector 70. This second wire harness 60 is formed by bundling together multiple electric wires with a round cross section, the conductors of which are covered with an insulating coating.

As shown in Figures 1 and 3, the first storage case 80 is a hollow box having a thickness in the width direction Y, and is fixed to the vehicle body below the fixed rail 2 via a support bracket that supports the fixed rail 2.

As shown in FIG. 3, the first storage case 80 has a front and rear portion each having a roughly semicircular protruding portion in side view, and is formed in a shape in which the roughly semicircular front and rear portions are connected by a roughly rectangular portion in side view.

As shown in Figures 4 and 6, the first storage case 80 is configured by assembling a case body 81 that regulates the routing path of the cable routing body 40 and a lid body 82 that covers the opening of the case body 81 in the width direction Y with the cable routing body 40 sandwiched between them.

As shown in Figures 3 and 4, the first storage case 80 is configured by assembling a case body 81 and a cover 82 to form a storage section 83 that stores the cable arrangement body 40 in a generally U-shape, and a guide section 84 that guides the cable arrangement body 40 when it is pulled out of the storage section 83 and when it is stored in the storage section 83.

Specifically, as shown in Figures 3 and 6, the storage section 83 of the first storage case 80 is composed of a generally semicircular portion in side view at the rear of the first storage case 80 and a generally rectangular portion in side view that extends forward from the generally semicircular portion in side view.

On the other hand, as shown in FIG. 3, the guide section 84 is composed of a curved section 84a that curves upward and forward from the front end of the storage section 83, and a straight section 84b that extends rearward from the front end of the curved section 84a and is disposed inside the fixed rail 2.

As shown in FIG. 3, the curved portion 84a of the guide portion 84 is formed so that its internal space gradually becomes smaller toward the straight portion 84b.
Furthermore, as shown in Figures 2 and 3, the straight portion 84b of the guide portion 84 is arranged between the inner surface portions 2b of the fixed rail 2, so that the cable routing body 40 derived from the guide portion 84 passes between the inner surface portions 2b toward the second storage case 90.

As shown in Figs. 1 and 3, the second storage case 90 is a hollow box having a thickness in the width direction Y, and is disposed between the inner side surfaces 2b of the fixed rails 2. Furthermore, the front end of the second storage case 90 is connected to the slider 3, and is configured to be able to slide along the fixed rails 2 in the forward and backward directions X in response to the sliding movement of the slide sheet 4.

As shown in Figures 4 and 7, the second storage case 90 is constructed by assembling a case body 91 that regulates the routing path of the cable routing body 40 and a lid body 92 that covers the opening of the case body 91 in the width direction Y with the cable routing body 40 sandwiched between them.

Next, in the power supply device 5 having the above-mentioned configuration, the case body 81 of the first housing case 80 and the case body 91 of the second housing case 90 will be described in more detail.
First, as shown in Figures 4 and 6, the case body 81 of the first storage case 80 is composed of a plate-shaped main surface portion 811 having a thickness in the width direction Y and facing the lid body 82, and an outer wall portion 812 extending toward the lid body 82 so as to follow the edge of the main surface portion 811.

Furthermore, as shown in Figs. 7 and 8, the case body 81 of the first storage case 80 has a guide wall portion 813 that guides the cable arrangement body 40 when it is pulled out and stored, and a restricting protrusion 814 that restricts the position of the vehicle body side electric wire connection portion 30, which are erected on the main surface portion 811 toward the lid body 82.

In addition, as shown in Figs. 7 and 8, the case body 81 of the first storage case 80 has a first bending portion 815 and a second bending portion 816 that bend the cable arrangement body 40 near the vehicle body side electric wire connection portion 30 in a desired bending direction, which are erected on the main surface portion 811 toward the lid body 82.

Specifically, as shown in FIG. 7, the guide wall portion 813 is erected in a position spaced apart from the lower outer wall portion 812 corresponding to the guide portion 84 by a distance greater than the thickness of the cable routing body 40 in a side view. The guide wall portion 813 is formed in a curved shape that is approximately parallel to the lower outer wall portion 812 corresponding to the guide portion 84.

7, the restricting protrusions 814 are provided on the main surface 811 at a position above the rear end of the guide wall 813 so as to support the four corners of the vehicle body side electric wire connection portion 30. The restricting protrusions 814, together with a restricting protrusion (not shown) provided on the lid 82, restrict the position of the vehicle body side electric wire connection portion 30 inside the first housing case 80.

7, the first bending portion 815 restricts the upward bending of the cable arrangement body 40 arranged in the front-rear direction X below the vehicle body side electric wire connection portion 30. More specifically, the first bending portion 815 is formed to bend the cable arrangement body 40 arranged in the front-rear direction X from the vehicle body side electric wire connection portion 30 in a bending direction (upward) that intersects with the direction of action (front to rear) of the tensile force acting on the cable arrangement body 40 passing through the upper part of the first housing case 80.

As shown in FIG. 7, the first bend 815 is composed of a guide wall 813 that regulates the vertical position of the cable routing body 40 below the vehicle body side electric wire connection part 30, and a pair of first walls 817 that regulate the position of the cable routing body 40 in the front-rear direction X behind the vehicle body side electric wire connection part 30.

Specifically, as shown in Figures 7 and 8, the pair of first wall portions 817 are plate-shaped with a thickness in the front-rear direction X, and are arranged opposite each other in the front-rear direction X with a gap slightly wider than the thickness of the cable arrangement body 40.

Of the pair of first walls 817, the front first wall 817 has an upper end connected to the upper outer wall 812 corresponding to the storage section 83, as shown in FIG. 7. Furthermore, the front first wall 817 is formed with a vertical length that ensures a gap between it and the guide wall 813 that can restrict bending of the cable arrangement body 40 with a bending radius larger than the thickness of the flexible flat cable 41.

On the other hand, as shown in Figures 7 and 8, on the front surface of the rear first wall portion 817, three ribs 817a are provided at a predetermined interval in the vertical direction to engage with the valley portion of the bellows portion of the protective tube 42 and to sandwich the bent cable arrangement body 40 between the front first wall portion 817.

Specifically, as shown in Figs. 7 and 8, the three ribs 817a protrude toward the first wall portion 817 at the front and extend in the width direction Y. The three ribs 817a are spaced apart at approximately the same intervals as the valleys of the bellows portion of the protective tube 42 so that the protective tube 42 can engage with them.

7, the second bending portion 816 restricts the bending of the cable arrangement body 40, which has been bent upward by the first bending portion 815, toward the rear. More specifically, the second bending portion 816 is formed to bend the cable arrangement body 40, which passes through the upper part of the first housing case 80, approximately parallel to the front-to-rear direction X in a bending direction (downward) that intersects with the direction of action (front to rear) of the tensile force acting on the cable arrangement body 40, which passes through the upper part of the first housing case 80.

As shown in FIG. 7, the second bend 816 is composed of a pair of first walls 817 that regulate the position of the cable routing body 40 in the front-rear direction X, and a pair of second walls 818 that regulate the position of the cable routing body 40 in the up-down direction behind the pair of first walls 817.

Specifically, as shown in FIG. 7, the pair of second wall portions 818 are plate-shaped with a thickness in the vertical direction, and are arranged facing each other in the vertical direction with a gap therebetween that is slightly wider than the thickness of the cable routing body 40.

Of the pair of second wall portions 818, the upper second wall portion 818 is configured with an upper outer wall portion 812 corresponding to the storage portion 83, as shown in FIGS.
On the other hand, as shown in FIGS. 7 and 8, the lower second wall portion 818 is in the form of a plate that is approximately parallel to the outer wall portion 812 , and the front end thereof is connected to the upper end of the rear first wall portion 817 .
In addition, a corner 816 a between the rear first wall portion 817 and the lower second wall portion 818 is chamfered with a bending radius that can restrict bending of the cable routing body 40 with a bending radius larger than the thickness of the flexible flat cable 41 .

Furthermore, as shown in Figures 7 and 8, on the upper surface of the lower second wall portion 818, two ribs 818a are protruded at a predetermined interval in the front-to-rear direction X, which engage with the valley portion of the bellows portion of the protective tube 42 and clamp the cable routing body 40 between the upper second wall portion 818, which is the outer wall portion 812 of the case main body 81.
Specifically, the two ribs 818a protrude toward the upper second wall portion 818 and extend in the width direction Y, as shown in FIGS.

The two ribs 818a are formed at a distance substantially equal to the valley portion of the bellows portion of the protective tube 42 so that the protective tube 42 can be engaged therewith.
With the first housing case 80 having such a configuration, the cable routing body 40 is routed in a crank shape inside the first housing case 80 near the vehicle body side electric wire connection portion 30 as shown in FIG.

Next, as shown in FIG. 7, the case body 91 of the second storage case 90 houses the cable arrangement body 40, the seat side electric wire connection part 50, and the second wire harness 60 in this order from the front to the rear. Note that inside the second storage case 90, the cable arrangement body 40 is arranged from the seat side electric wire connection part 50 toward the front.

As shown in Figures 7 and 9, the case body 91 of the second storage case 90 has a thickness in the width direction Y and includes a plate-shaped main surface portion 911 facing the lid body 92, a front wall portion 912 extending toward the lid body 92 along the front edge of the main surface portion 911, and an upper wall portion 913 extending toward the lid body 92 along the upper edge of the main surface portion 911.

Furthermore, as shown in Figs. 7 and 9, the case body 91 of the second storage case 90 has a rear wall portion 914 that is erected toward the lid body 92 along the rear end edge of the main surface portion 911, and a lower wall portion 915 that is erected toward the lid body 92 along the lower end edge of the main surface portion 911.

In addition, as shown in Figures 7 and 9, the case body 91 of the second storage case 90 has a first bending portion 916 and a second bending portion 917 that bend the cable arrangement body 40 near the sheet-side electric wire connection portion 50 in the desired bending direction, which are erected on the main surface portion 911 toward the lid body 92.

7, the first bending portion 916 restricts downward bending of the cable arrangement body 40 arranged in the front-rear direction X in front of the seat-side electric wire connection portion 50. More specifically, the first bending portion 916 is formed to bend the cable arrangement body 40 arranged from the seat-side electric wire connection portion 50 toward the front in a bending direction (downward) that intersects with the direction of action (rear to front) of the tensile force acting on the cable arrangement body 40 passing through the inside of the fixed rail 2.

As shown in Figure 7, this first bending portion 916 is composed of an upper wall portion 913 that regulates the up-down position of the cable routing body 40 in front of the sheet-side wire connection portion 50, and a pair of first wall portions 918 that regulate the position of the cable routing body 40 in the front-to-rear direction X below the upper wall portion 913.
Specifically, as shown in FIG. 7 , the pair of first wall portions 918 are plate-shaped having a thickness in the front-to-rear direction X, and are arranged opposite each other in the front-to-rear direction X at a distance slightly wider than the thickness of the cable routing body 40.
Of the pair of first walls 918, the front first wall 918 is formed by the front wall 912 of the case main body 91, as shown in FIGS.

Furthermore, as shown in Figs. 7 and 9, on the rear surface of the front first wall portion 918 (front wall portion 912), two ribs 918a are provided protruding at a predetermined distance in the vertical direction, with which the valley portion of the bellows portion of the protective tube 42 engages and which sandwich the cable arrangement body 40 between the rear first wall portion 918 and the front first wall portion 918.

Specifically, as shown in Figs. 7 and 9, the two ribs 918a protrude toward the rear first wall portion 918 and extend in the width direction Y. The two ribs 918a are formed at approximately the same distance as the valley portion of the bellows portion of the protective tube 42 so that the protective tube 42 can engage with them.

On the other hand, the rear first wall portion 918 is formed in a plate shape that is approximately parallel to the front wall portion 912, as shown in Figures 7 and 9. As shown in Figures 7 and 9, this rear first wall portion 918 is formed with a vertical length that extends from a position that is a predetermined distance below the upper wall portion 913 of the case body 91 to approximately the same vertical position as the lower wall portion 915.

Between the rear first wall portion 918 and the upper wall portion 913, a gap is provided that allows the cable arrangement body 40 to be regulated with a bending radius larger than the thickness of the cable arrangement body 40.

7, the second bending portion 917 restricts the bending of the cable arrangement body 40 bent by the first bending portion 916 toward the front. More specifically, the second bending portion 917 is formed to bend the cable arrangement body 40 passing through the inside of the fixed rail 2 in a bending direction (upward) that intersects with the direction of action (rear to front) of the tensile force acting on the cable arrangement body 40 passing through the inside of the fixed rail 2.

As shown in FIG. 7, the second bend 917 is composed of a pair of first walls 918 that regulate the position of the cable arrangement body 40 in the front-rear direction X, and a pair of second walls 919 that regulate the up-down position of the cable arrangement body 40 that is arranged along the front-rear direction X below the first walls 918.

More specifically, as shown in FIG. 7, the pair of second wall portions 919 are provided at the lower front end of the second housing case 90 and are formed as guide portions that guide the cable arrangement body 40 into the interior of the second housing case 90. The pair of second wall portions 919 are plate-shaped with a thickness in the vertical direction and are disposed opposite each other in the vertical direction at a distance substantially equal to the thickness of the cable arrangement body 40.

Specifically, as shown in Figs. 7 and 9, the pair of second wall portions 919 are formed such that the upper second wall portion 919 extends forward from the lower end of the front wall portion 912, and the lower second wall portion 919 extends downward from the lower wall portion 915, with its tip extending forward.

In addition, a corner 917 a between the upper second wall portion 919 and the front wall portion 912 is chamfered with a bending radius that can restrict bending of the cable routing body 40 with a bending radius larger than the thickness of the flexible flat cable 41 .
With the second accommodating case 90 configured as described above, the cable routing body 40 is routed in a crank shape inside the second accommodating case 90 near the seat-side electric wire connection portion 50 as shown in FIG.

As described above, the electric wire arrangement structure of this embodiment supplies electricity to the sliding seat 4, which is supported so that it can slide back and forth along the fore-and-aft direction X of the fixed rail 2 fixed to the vehicle body, by wiring a cable arrangement body 40, one end of which is electrically connected to the vehicle body side wire harness 6 and the other end of which is electrically connected to the seat side wire harness 7.

In this electric wire arrangement structure, one end of the cable arrangement body 40 is connected to the first wire harness 20 at a fixed vehicle body side electric wire connection part 30, and the other end of the cable arrangement body 40 is connected to the second wire harness 60 at a fixed seat side electric wire connection part 50.

In the first accommodating case 80, the wire routing structure is provided with bending portions (a first bending portion 815 and a second bending portion 816) that bend the cable routing body 40 near the vehicle body side wire connection portion 30 in a bending direction (up-down direction) that intersects with the direction of action of the tensile force acting on the cable routing body 40 (the fore-aft direction X).
According to this, the electric wire routing structure can prevent malfunction of the vehicle body side electric wire connection portion 30 due to pulling force.

Specifically, by providing bending sections (first bending section 815 and second bending section 816) that bend the cable routing body 40 near the vehicle body side electric wire connection section 30, the electric wire routing structure can receive the pulling force acting on the cable routing body 40 at the bending sections and reduce the pulling force applied to the vehicle body side electric wire connection section 30. Therefore, the electric wire routing structure can prevent malfunction of the vehicle body side electric wire connection section 30 due to the pulling force.

In addition, when a pressing force caused by the advancement and retreat of the slide sheet 4 acts on the cable arrangement body 40, the portion of the cable arrangement body 40 bent at the bending portion can absorb the pressing force. Therefore, the electric wire arrangement structure can reduce the pressing force acting on the cable arrangement body 40 near the vehicle body side electric wire connection part 30, and prevent the cable arrangement body 40 near the vehicle body side electric wire connection part 30 from being deformed, for example, by buckling.

In addition, in the second storage case 90, the wire routing structure is provided with bending portions (a first bending portion 916 and a second bending portion 917) that bend the cable routing body 40 near the seat side wire connection portion 50 in a bending direction (up-down direction) that intersects with the direction of action of the tensile force acting on the cable routing body 40 (the front-to-rear direction X).
According to this, the electric wire routing structure can prevent malfunction of the seat-side electric wire connection portion 50 due to pulling force, similarly to the case of the first accommodating case 80 .

In addition, multiple bent portions are provided at predetermined intervals, and the first bent portion 815 of the first storage case 80 is formed so that the bending direction of the cable arrangement body 40 relative to the direction in which the tensile force acts (front-to-back direction X) is upward. On the other hand, the second bent portion 816 of the first storage case 80 is formed so that the bending direction of the cable arrangement body 40 relative to the direction in which the tensile force acts (front-to-back direction X) is downward.

With this configuration, the first bend 815 and the second bend 816 are formed so that the bending directions of the cable arrangement body 40 are opposite to each other, so that the electric wire arrangement structure can bend the cable arrangement body 40 into an approximately crank shape.

Therefore, the wire routing structure can reliably receive the tensile force acting on the cable routing body 40 at the first bent portion 815 and the second bent portion 816, and can further prevent the tensile force in the fore-and-aft direction X from being directly applied to the vehicle body side wire connection portion 30.
As a result, the electric wire routing structure can further reduce the pulling force applied to the vehicle body side electric wire connection portion 30.

The first bent portion 916 of the second storage case 90 is formed so that the bending direction of the cable arrangement body 40 relative to the direction in which the tensile force acts (front-to-back direction X) is downward. On the other hand, the second bent portion 917 of the second storage case 90 is formed so that the bending direction of the cable arrangement body 40 relative to the direction in which the tensile force acts (front-to-back direction X) is upward.

With this configuration, the electric wire routing structure can reliably receive the pulling force acting on the cable routing body 40 at the first bent portion 916 and the second bent portion 917, similar to the first housing case 80.

Therefore, the electric wire routing structure can further prevent a pulling force in the front-rear direction X from being directly applied to the seat-side electric wire connection portion 50 .
As a result, the electric wire routing structure can further reduce the pulling force applied to the seat-side electric wire connection portion 50.

The cable arrangement body 40 is a laminate of band-shaped flexible flat cables 41 in which a conductor is sandwiched between insulating sheets. The bending portions (first bending portions 815, 916 and second bending portions 816, 917) are configured to bend the flexible flat cable 41 in the thickness direction.

With this configuration, the electric wire routing structure can reliably bend the cable routing body 40 along the bent portion, and can ensure the contact area between the bent portion and the cable routing body 40.

As a result, the electric wire routing structure can reliably receive the tensile force acting on the cable routing body 40 at the bent portion, thereby reliably reducing the tensile force acting on each of the vehicle body side electric wire connection portion 30 and the seat side electric wire connection portion 50.

The first wire harness 20 is composed of a coated electric wire 21 with a round cross section, the conductor of which is coated with an insulating coating. The vehicle body side electric wire connection part 30 is configured such that the flat rectangular conductor 41a of the flexible flat cable 41 and the conductor of the coated electric wire 21 are connected via a connection terminal 31.

With this configuration, the electric wire routing structure can easily connect the flexible flat cable 41 and the coated electric wire 21 via the connection terminal 31, and can improve the connection strength compared to when the flexible flat cable 41 and the coated electric wire 21 are directly connected.

As a result, the electric wire routing structure can prevent the connection between the flexible flat cable 41 and the coated electric wire 21 from being released by the cooperation of the bent portion (first bent portion 815 and second bent portion 816) and the connection terminal 31.

Therefore, the electric wire routing structure can ensure a stable connection state of the vehicle body side electric wire connection part 30 even when connecting a flexible flat cable 41 and a coated electric wire 21 of different wire types.

The second wire harness 60 is configured with a cross-sectionally round coated electric wire 21 in which a conductor is coated with an insulating coating. The seat-side electric wire connection portion 50 is configured such that the rectangular conductor 41a of the flexible flat cable 41 and the conductor of the coated electric wire are connected via a connection terminal.
According to this configuration, the electric wire routing structure can ensure a stable connection state of the seat side electric wire connection portion 50, similar to the vehicle body side electric wire connection portion 30 described above.

The electric wire routing structure is provided with a tubular protective tube 42 that covers the flexible flat cable 41 .
According to this configuration, the electric wire routing structure can prevent damage to the flexible flat cable 41 due to sliding with the bent portions (the first bent portions 815, 916 and the second bent portions 816, 917). Therefore, the electric wire routing structure can ensure stable conductivity of the flexible flat cable 41.

The second bent portions 816 and 917 restrict bending of the cable routing body 40 to a bending radius equal to or greater than the thickness of the flexible flat cable 41 .
According to this configuration, the electric wire routing structure can prevent the cable routing body 40 from being bent in a folding manner, so that stable conductivity of the cable routing body 40 can be reliably ensured.

Furthermore, by providing a curved surface at the second bends 816, 917 to regulate the bending radius of the cable arrangement body 40, the electric wire arrangement structure can better prevent the cable arrangement body 40 from being damaged by strong contact with the second bends 816, 917.

In addition, in the first storage case 80, the first bending portion 815 is provided with a pair of first walls 817 that sandwich the bent cable arrangement body 40.

With this configuration, the electric wire routing structure can reliably bend the cable routing body 40, and the movement of the cable routing body 40 can be restricted by the first wall portion 817. Therefore, the electric wire routing structure can more reliably reduce the pulling force applied to the vehicle body side electric wire connection portion 30.

In the first accommodating case 80, the second bent portion 816 is provided with a pair of first walls 817 and a pair of second walls 818 that sandwich the bent cable routing body 40 therebetween.
According to this configuration, the electric wire routing structure can more reliably reduce the pulling force applied to the vehicle body side electric wire connection portion 30, similar to the first bent portion 815.

In the second accommodating case 90, the first bending portion 916 is provided with a pair of first wall portions 918 that sandwich the bent cable arrangement body 40. Furthermore, the second bending portion 917 is provided with a pair of first wall portions 918 and second wall portions 919 that sandwich the bent cable arrangement body 40.
According to this configuration, the electric wire routing structure can more reliably reduce the pulling force applied to the seat-side electric wire connection portion 50, similar to the first accommodating case 80.

The first storage case 80 has a rib 817a on the rear first wall portion 817 that stands toward the front first wall portion 817 and extends in the width direction Y, and a rib 818a on the lower second wall portion 818 that stands toward the upper second wall portion 818 and extends in the width direction Y.

With this configuration, the electric wire routing structure can reliably restrict the movement of the cable routing body 40 near the vehicle body side electric wire connection portion 30 by the first wall portion 817 and the second wall portion 818. Therefore, when a tensile force acts on the cable routing body 40, the electric wire routing structure can further reliably reduce the tensile force applied to the vehicle body side electric wire connection portion 30.

The second storage case 90 has a rib 918a that stands on the front first wall portion 918 toward the rear first wall portion 918 and extends in the width direction Y.
According to this configuration, the electric wire routing structure can reliably restrict the movement of the cable routing body 40 in the vicinity of the seat-side electric wire connection portion 50 by the first wall portion 918. Therefore, the electric wire routing structure can further reliably reduce the pulling force applied to the seat-side electric wire connection portion 50 when a pulling force acts on the cable routing body 40.

The electric wire routing structure includes a bellows-shaped protective tube 42 that covers the flexible flat cable 41 and is fixed to the flexible flat cable 41 and has continuous projections and recesses along the longitudinal direction of the cable routing body 40 .
The electric wire routing structure is such that the ribs 817 a, 818 a of the first accommodating case 80 and the valley portions of the protective tube 42 engage with each other.

With this configuration, the valley portion of the protective tube 42 fixed to the flexible flat cable 41 engages with the ribs 817a and 818a, so that the electric wire routing structure can more reliably restrict the movement of the cable routing body 40 near the vehicle body side electric wire connection part 30. Therefore, when a tensile force acts on the cable routing body 40, the electric wire routing structure can more reliably reduce the tensile force applied to the vehicle body side electric wire connection part 30.

In addition, the electric wire routing structure is such that the rib 918 a of the second accommodating case 90 and the valley portion of the protective tube 42 engage with each other.
According to this configuration, the engagement between the valley portion of the protective tube 42 fixed to the flexible flat cable 41 and the rib 918a enables the electric wire routing structure to more reliably restrict movement of the cable routing body 40 in the vicinity of the seat-side electric wire connection portion 50. Therefore, when a tensile force acts on the cable routing body 40, the electric wire routing structure can more reliably reduce the tensile force applied to the seat-side electric wire connection portion 50.

The electric wire routing structure has a vehicle body side end of the cable routing body 40 connected to a vehicle body side wire harness 6 via a vehicle body side electric wire connection part 30, and a seat side end of the cable routing body 40 connected to a seat side wire harness 7 via a seat side electric wire connection part 50.

The electric wire routing structure further includes a first storage case 80 provided outside the fixed rail 2, which stores the vehicle body side electric wire connection part 30 and has a storage part 83 that can pull out and store the cable routing body 40 as the sliding seat 4 advances and retreats.

According to this configuration, since the vehicle body side electric wire connection part 30 and the cable arrangement body 40 are accommodated in the accommodation part 83 of the first accommodation case 80, the electric wire arrangement structure can prevent the vehicle body side electric wire connection part 30 and the cable arrangement body 40 from being damaged by contact with a foreign object, or from being damaged by the application of an unintended external force to the vehicle body side electric wire connection part 30 and the cable arrangement body 40. Therefore, the electric wire arrangement structure can prevent unintended malfunctions from occurring in the vehicle body side electric wire connection part 30 and the cable arrangement body 40.

In addition, in the housing portion 83, the cable routing body 40 is housed in a bent U-shape.
According to this configuration, the electric wire routing structure can easily pull out and store the cable routing body 40 as the slide seat 4 moves back and forth.

In addition, the cable routing body 40 is led out from the first accommodating case 80 , and the led out portion is routed inside the fixed rail 2 .
The first storage case 80 stores the cable routing body 40 and is provided with a guide portion 84 that guides the cable routing body 40 toward the inside of the fixed rail 2 .

With this configuration, the electric wire routing structure can guide the cable routing body 40 between the storage section 83 and the fixed rail 2 by the guide section 84, making it easier to pull out and store the cable routing body 40.

Furthermore, since the cable routing body 40 is accommodated in the guide portion 84, the electric wire routing structure can reliably prevent the cable routing body 40 from being damaged due to contact with foreign objects or due to unintended external forces being applied to the cable routing body 40 between the accommodation portion 83 and the fixed rail 2.
Therefore, the electric wire routing structure can reliably prevent unintended malfunctions from occurring in the cable routing body 40.

In addition, the guide portion 84 is formed of a straight portion 84b that extends linearly along the front-rear direction X to the inside of the fixed rail 2, and a curved portion 84a that curves from the storage portion 83 toward the straight portion 84b.
According to this configuration, the curved portion 84 a of the guide portion 84 enables the electric wire routing structure to more smoothly guide the cable routing body 40 led out from the storage portion 83 .

Furthermore, the straight portion 84b of the guide portion 84 prevents the cable arrangement body 40 from being exposed to the outside between the storage portion 83 and the fixed rail 2, and the electric wire arrangement structure can reliably guide the cable arrangement body 40 to the inside of the fixed rail 2. Therefore, the electric wire arrangement structure can more reliably prevent the cable arrangement body 40 from being damaged by contact with a foreign object or by the application of an unintended external force to the cable arrangement body 40.

In the configuration of the present invention and the correspondence with the above-mentioned embodiment,
The longitudinal direction of the present invention corresponds to the front-rear direction X of the embodiment.
Similarly,
The vehicle body side electric wire corresponds to the vehicle body side wire harness 6,
The seat side electric wire corresponds to the seat side wire harness 7,
The electric wire corresponds to the cable arrangement body 40,
The electric wire connection portion and the vehicle body side electric wire connection portion correspond to the vehicle body side electric wire connection portion 30,
The electric wire connection portion and the sheet-side electric wire connection portion correspond to the sheet-side electric wire connection portion 50;
The separate electric wires correspond to the first wire harness 20 and the second wire harness 60,
The direction of action corresponds to front to rear or rear to front,
The bending direction corresponds to upward or downward,
The bent portions correspond to first bent portions 815, 916 and second bent portions 816, 917,
The ribbon-shaped electric wire corresponds to the flexible flat cable 41,
The pair of walls corresponds to the first wall portions 817, 918 and the second wall portions 818, 919.
The housing case corresponds to the first housing case 80,
The present invention is not limited to the configurations of the above-described embodiments, and many other embodiments can be obtained.

For example, in the above-described embodiment, the seat slide mechanism 1 has the power supply device 5 disposed below the fixed rail 2, but this is not limited thereto. The power supply device 8 may be disposed adjacent to the fixed rail 2 in the width direction Y, as shown in FIG. 10, which shows an explanatory diagram outlining the seat slide mechanism 1 in another embodiment.

Furthermore, the first housing case 9 of the power supply device 8 may be arranged so that the thickness direction is vertical, as shown in FIG. 10. In this case, inside the first housing case 9, the flexible flat cable is arranged so that the parallel direction of the flat conductors is vertical.

Although detailed illustration is omitted, the upper surface of the storage section of the first storage case 9 in the power supply device 8 is located below the upper surface of the fixed rail 2, and the upper surface of the guide section is formed as a surface that gradually slopes upward in a spiral shape from the storage section to the fixed rail.

In addition, while the power supply device 5 is disposed below one of the fixed rails 2, this is not limiting, and the power supply device 5 may be disposed below the other fixed rail 2. Alternatively, the power supply device 5 may be disposed below each of the left and right fixed rails 2.

Although the vehicle body side electric wire connection part 30 and the seat side electric wire connection part 50 are connected by the cable arrangement body 40, this is not limited thereto, and any suitable electric wire may be used as long as it is capable of electrically connecting the vehicle body side electric wire connection part 30 and the seat side electric wire connection part 50. Note that the suitable electric wire may be, for example, a single flexible flat cable, a flat cable made of coated electric wires with a round cross section, or a wire harness made of bundled coated electric wires.

In addition, the second storage case 90 holding the cable arrangement body 40 is configured to move in the front-to-rear direction X through the slit in the fixed rail 2, but this is not limited to the above. The second storage case may be configured to move in the front-to-rear direction X through the opening of a case that is provided separately from the fixed rail 2 and is arranged adjacent to the fixed rail 2.

In addition, the first wire harness 20 and the second wire harness 60 are configured with a plurality of coated electric wires 21, but this is not limited thereto, and the first wire harness and/or the second wire harness may be configured with a flexible flat cable or the like as long as it can be connected to the cable arrangement body 40 via the connection terminal 31.

In addition, in the vehicle body side electric wire connection portion 30, the flexible flat cable 41 and the first wire harness 20 are connected via a connection terminal 31 having a coating crimp portion 31a and a conductor crimp portion 31b, but this is not limited to this.

For example, the flexible flat cable 41 and the first wire harness 20 may be connected via a bus bar. In this case, the rectangular conductor 41a of the flexible flat cable 41 and the conductor of the first wire harness 20 are connected by welding to the bus bar.
Similarly, in the seat-side electric wire connection portion 50, the flexible flat cable 41 and the second wire harness 60 may be connected via a bus bar.

In addition, the first storage case 80 is provided with two bent portions (first bent portion 815 and second bent portion 816), and the second storage case 90 is provided with two bent portions (first bent portion 916 and second bent portion 917), but this is not limited to this. For example, the storage case may be provided with one bent portion, or three or more bent portions.

In addition, in the first storage case 80, the second bent portion 816 is configured from a pair of first wall portions 817 and a pair of second wall portions 818, but this is not limited thereto, and the bent portion may be configured from, for example, a chamfered portion that is a corner portion 816a between the first wall portion 817 and the second wall portion 818. Alternatively, the bent portion may be configured from a pair of first wall portions 817 and an upper second wall portion 818 (upper outer wall portion 812).

Similarly, in the second storage case 90, the second bent portion 917 is configured from a pair of first wall portions 918 and a pair of second wall portions 919, but this is not limited thereto, and may be, for example, a bent portion configured from a chamfered portion that is a corner portion 917a between the first wall portion 918 and the second wall portion 919. Alternatively, the bent portion may be configured from a pair of first wall portions 918 and a lower second wall portion 919.

In addition, while the ribs 817a, 918a are provided on one of the first wall portions 817, 918, this is not limiting, and the ribs may also be provided on the other of the first wall portions 817, 918. Similarly, while the ribs 818a are provided on one of the second wall portions 818, this is not limiting, and the ribs may also be provided on the other of the second wall portions 818.

2...Fixed rail 4...Slide seat 6...Vehicle body side wire harness 7...Seat side wire harness 20...First wire harness 21...Coated electric wire 30...Vehicle body side electric wire connection portion 31...Connection terminal 40...Cable arrangement body 41...Flexible flat cable 42...Protective tube 50...Seat side electric wire connection portion 60...Second wire harness 80...First storage case 83...Storage portion 84...Guide portion 84a...Curved portion 84b...Straight portion 815, 916...First bent portion 816, 917...Second bent portion 817, 918...First wall portion 818, 919...Second wall portion 817a, 818a, 918a...Rib X...Front-rear direction

Claims (12)

A wire arrangement structure for supplying electricity to a sliding seat that is supported so as to be able to slide back and forth along a longitudinal direction of a fixed rail that is fixed to a vehicle body, by arranging an electric wire, one end of which is electrically connected to a vehicle body side electric wire and the other end of which is electrically connected to a seat side electric wire,
At least one end of the electric wire is connected to another electric wire by a fixed electric wire connection part,
a bending portion is provided to bend the electric wire in a vicinity of the electric wire connection portion in a bending direction intersecting a direction in which a tensile force acts on the electric wire ,
The bent portion is provided at a plurality of predetermined intervals,
The adjacent bent portions are
The wires are bent in opposite directions.
Wire routing structure. The electric wire is
It is a ribbon-shaped electric wire with a conductor sandwiched between insulating sheets.
The bent portion is
The ribbon-shaped electric wire is bent in the thickness direction.
The electric wire routing structure according to claim 1 . The separate electric wire is
It is a coated electric wire with a round cross section, in which the conductor is covered with an insulating coating.
The electric wire connection portion is
The conductor of the ribbon-shaped electric wire and the conductor of the coated electric wire are connected via a connection terminal.
The electric wire routing structure according to claim 2 . A protective tube is provided to cover the electric wire.
The electric wire routing structure according to claim 2 or 3 . The bent portion is
The bending of the ribbon-shaped electric wire is restricted to a bending radius equal to or greater than the thickness of the ribbon-shaped electric wire.
The electric wire routing structure according to any one of claims 2 to 4 . The bent portion is
A pair of walls are provided to sandwich the bent ribbon-shaped electric wire.
The electric wire routing structure according to any one of claims 2 to 5 . At least one of the pair of walls is provided with a rib extending in a width direction of the belt-shaped electric wire and extending toward the other wall.
The electric wire routing structure according to claim 6 . a bellows-shaped protective tube is provided that covers the strip-shaped electric wire, is fixed to the strip-shaped electric wire, and has continuous projections and recesses along a longitudinal direction of the strip-shaped electric wire;
The rib and the recess of the protective tube engage with each other.
The electric wire routing structure according to claim 7 . The vehicle body side end of the belt-shaped electric wire is connected to the vehicle body side electric wire via a vehicle body side electric wire connection part,
The sheet-side end of the strip-shaped electric wire is connected to the sheet-side electric wire via the sheet-side electric wire connection part,
A housing case is provided outside the fixed rail, which houses the electric wire connection part on the vehicle body side and has a housing part that can pull out and house the belt-shaped electric wire as the slide seat advances and retreats.
The electric wire routing structure according to any one of claims 2 to 8 . In the storage section, the ribbon-shaped electric wire is stored in a U-shaped bent state.
The electric wire routing structure according to claim 9 . The ribbon-shaped electric wire is
The housing is led out from the housing case, and the led out portion is arranged inside the fixed rail,
The storage case includes:
The belt-shaped electric wire is accommodated in the guide portion, which guides the belt-shaped electric wire toward the inside of the fixed rail.
The electric wire routing structure according to claim 9 or 10 . The guide portion is
a straight portion extending straight into the fixed rail along the longitudinal direction of the fixed rail;
a curved portion curved from the storage portion toward the straight portion;
The electric wire routing structure according to claim 11 .

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