WO2010103904A1

WO2010103904A1 - Electricity supply device

Info

Publication number: WO2010103904A1
Application number: PCT/JP2010/052565
Authority: WO
Inventors: 良 ▲濱▼田
Original assignee: 矢崎総業株式会社
Priority date: 2009-03-09
Filing date: 2010-02-19
Publication date: 2010-09-16
Also published as: JP2010213399A

Abstract

An electricity supply device is provided with: a harness holding section which holds a flexible flat harness in such a manner that the harness consists of a turn-back section formed by turning the harness back at the longitudinally intermediate section thereof and also of a wound section formed by overlaying two sections of the harness which connect to the turn-back section and winding the two sections in the same direction in layers; and a case which movably contains the harness holding section. The respective ends of the two sections of the harness are led out of the wound section.

Description

Power supply device

The present invention relates to a harness-winding type power supply device in which a flat wire harness is spirally wound in a case to be contracted, and the flat wire harness is straightly extended and extended.

FIG. 10 shows an outline of one form of a related power supply apparatus (see, for example, Patent Document 1).

This power supply device 61 accommodates a flexible flat wire harness (hereinafter referred to as a flat harness) 63 in a substantially long case 62 made of synthetic resin, bent in a substantially U shape, and has one end 63 a of the flat harness 63. Is connected to the power supply side (not shown), and the other end 63b is connected to, for example, an auxiliary machine (not shown) of an automobile slide seat. The flat harness 63 extends as shown by a solid line when the slide sheet is at the end position in the forward direction, and is contracted as shown by a chain line when the slide sheet is at the end position in the backward direction.

In addition, although the one end part 63a of the flat harness 63 shown in FIG. 10 is derived | led-out in 90 degree direction with the other end part 63b, the both ends of the electric power feeder described in patent document 1 are derived | led-out in the 180 degree opposite direction. . Moreover, as a power supply device (not shown) applied to the slide door instead of the slide sheet, for example, the one described in Patent Document 2 can be cited. In addition, as a power supply device (not shown) that is wound around a reel or the like instead of bending the flat harness 63 into a U-shape, for example, one described in Patent Document 3 can be cited.

Japanese Unexamined Patent Publication No. 2004-312846 (FIG. 5) Japanese Patent Laid-Open No. 2001-171443 (FIG. 1) US Pat. No. 6,267,430 (FIG. 2) US Patent Application Publication No. 2001/004022

However, in the power supply device 61 related to the above, for example, the flat harness 63 extends across the entire width in the range from the front end 62a to the rear end 62b in the case 62 as the slide seat moves forward and backward (forward and backward movement). Because the case 62 moves greatly, the case 62 becomes larger in the longitudinal direction and the width direction, and accordingly, the power feeding device 61 becomes heavier, requires a large mounting space on the mounting side (for example, the vehicle floor), and lacks versatility. Caused a problem. Further, there is a concern that the flat harness 63 is likely to buckle in the case 62, and in this case, the expansion and contraction of the flat harness 63 is not smoothly performed.

These problems and concerns are not limited to automobile slide seats, but power feeders are placed on slide doors, slide seats and slide doors of vehicles other than automobiles, and slide seats and slide doors of devices other than vehicles. This can occur in the same way. These slide seats and the like are collectively referred to as a slide structure, and the vehicle body and the like are collectively referred to as a fixed structure.

In view of the above points, the present invention makes it possible to reduce the size and weight of a case for accommodating a flat harness, save space on the mounting side, expand versatility, and buckle the flat harness in the case. It is an object of the present invention to provide a power supply apparatus that can prevent the problem and improve the reliability of constant power supply.

In order to achieve the above object, the power supply device of the present invention includes a folded portion in which the middle in the longitudinal direction of a flexible flat harness is folded, and two harness portions following the folded portion are overlapped in the same direction. A harness holding part that holds the flat harness so as to constitute a winding part wound around the layer, and a case that movably accommodates the harness holding part, and the two harness parts Each end portion is led out from the winding portion.

Preferably, one end of the two harness portions is fixed to the case, and the other end is movable with respect to the case.

Preferably, the end portions of the two harness portions are led out in opposite directions from the winding portion.

With the above configuration, by moving the other end portion of the flat harness in a direction away from the winding portion, the harness portion on one fixed side (driven side) and the harness portion on the other movable side are separated from the winding portion. At the same time, it is led out in the opposite direction and extends with the same length, and the winding part is located in the middle in the longitudinal direction of both harness parts. Since the winding part moves only within a distance of 1/2 of the extension length (stroke) of the flat harness in the case, the case part that accommodates the winding part is shortened. In addition, since the harness portion that has been straightened is restored to the winding state by an urging force (spring force) due to its own rigidity, for example, it is always stretched while being pulled toward the winding portion, so that the seat at the time of restoration or the like is restored. Bending is prevented.

Preferably, the harness holding portion includes a rotating body, the folded portion of the flat harness is fixed to the rotating body, and the winding portion is formed along the outer periphery of the rotating body.

With the above configuration, two harness portions are overlapped on the outer periphery of the rotating body, and are firmly wound around a plurality of layers without gaps. By pulling the movable-side harness part, the rotating body rotates in the pulling direction, and the fixed-side (driven-side) harness part and the movable-side harness part are fed out from the rotating body in the opposite direction with the same length.

Preferably, a U-shaped slit portion for inserting the folded portion into the rotating body is provided.

With the above configuration, the flat harness is bent and inserted into the U-shape in the slit portion, and the folded portion of the flat harness is fixed without coming off by the frictional resistance in the slit portion. Since the slit portion is U-shaped, excessive bending stress is not applied to the flat harness.

Preferably, the harness holding portion includes a rotating body cover that covers the rotating body and rotatably holds the rotating body, and the rotating body cover is slidably engaged with the case.

With the above configuration, the rotating body supporting the flat harness slides smoothly and reliably along the case via the rotating body cover. The rotating body is moved by pulling the movable end of the flat harness against the biasing force.

Preferably, the case includes a wide portion that movably accommodates the winding portion, and the harness portion that is led out from the winding portion and extends to the end portion that is movable with respect to the case. A narrow portion to be routed.

With the above configuration, the winding portion of the flat harness and the fixed harness portion are protected in the wide portion of the case without interference with the outside, and the movable harness portion that is the flat harness pull-out side is within the narrow portion of the case. It is protected without interference with the outside. The lengths of the wide portion and the narrow portion are approximately the same, and the case is saved in space due to the width dimension difference between the wide portion and the wide portion.

According to the present invention, when the flat harness is extended, the winding part moves only a half of the extension length of the flat harness in the case, so the case accommodating the winding part can be shortened in the longitudinal direction, Alternatively, the case part that accommodates the winding part is made wider, and the case part that accommodates the movable harness part of the flat harness is made narrower, thereby making the case more compact and lighter and saving space on the case mounting side. The case, that is, the power feeding device can be generalized. Further, since the harness portion is extended while being always pulled by its own restoring force, for example, the flat harness can be prevented from buckling and the reliability of power supply at all times can be improved.

Moreover, according to this invention, by using a rotary body, winding of a flat harness can be performed smoothly and reliably, and both harness parts can be smoothly and reliably extended, and these, flat harness It is possible to smoothly and reliably perform expansion and contraction of the power supply and to improve the reliability of constant power supply.

Further, according to the present invention, the flat harness can be easily assembled by being inserted into the slit portion of the rotating body, and the folded portion in the slit portion can be securely fixed without being displaced against the tensile force. .

Further, according to the present invention, the rotating body can be smoothly and reliably slid along the case together with the flat harness, thereby preventing the flat harness from buckling more reliably and improving the reliability of constant power supply. Can be increased.

In addition, according to the present invention, the case can be made compact and lightweight at the narrow portion, and can be assembled on the mounting side in a space-saving manner, and the versatility of the case and the power feeding device using the case can be enhanced.

It is a perspective view which shows the internal structure of one Embodiment of the electric power feeder which concerns on this invention. It is a perspective view which shows further the inside of the electric power feeder of FIG. It is a perspective view which shows the principal part of the electric power feeder of FIG. (A)-(c) is a perspective view which shows in order the formation process of the principal part of an electric power feeder. It is a perspective view which shows the effect | action of an electric power feeder. It is a perspective view which shows the whole electric power feeder. It is a planar view schematic diagram which shows the effect of an electric power feeder. It is a perspective view which shows effects | actions of the flat harness etc. in an electric power feeder. It is a perspective view which shows one application example of an electric power feeder. It is a schematic diagram which shows one form of a related electric power feeder.

FIG. 1 shows an embodiment of a power feeding apparatus according to the present invention.

This power supply device 1 includes a horizontally long case 2 made of a synthetic resin, a rotating body 3 made of a synthetic resin disposed in the case, and is wound around the rotating body 3 in the same direction so that one side and the other side of the rotating body 3 A flexible flat wire harness (hereinafter referred to as a flat harness) 4 led out in a 180 ° direction and a rotating body 3 are accommodated and slidable in the longitudinal direction of the case along the first guide rail 6 in the case. A rotating cover 5 made of synthetic resin, a metal belt-shaped winding spring 7 arranged along the flat harness 4 and biased in the winding direction of the harness, and an end 4a on the movable side of the flat harness 4 And a synthetic resin harness fixing member (slider) 9 slidable in the longitudinal direction of the case along the second guide rail 8 in the case.

The case 2 includes an upper cover (not shown), and the cover is locked to the case body (substitute with reference numeral 2) by locking means. The case body 2 has a horizontal bottom wall 10 and vertical wall portions 11 to 14 in the front, rear, left, and right directions. Each has two guide rails 8.

The first guide rail 6 is disposed along the left wall portion 13 of the case body 2, and the slide engagement portion 16 having a substantially T-shaped longitudinal section of the rotating body cover 5 is an inner groove of the first guide rail 6. Is engaged. The shapes of the guide rail 6 and the slide engagement portion 16 can be set as appropriate. Further, in the specification, the directions in the up, down, front, back, left, and right directions are for convenience of explanation, and do not always coincide with the mounting direction on the mounting side.

A concave groove-like slide engaging portion 17 at the bottom of the harness fixing member 9 is engaged with the second guide rail 8. The upper surface of the harness fixing member 9 is supported in contact with the inner surface of the upper cover (not shown) of the case 2 and the upward protruding portion of the harness fixing member 9 is inserted into a horizontal slit hole (not shown) in the case longitudinal direction of the upper cover. 9a penetrates, the connector 18 perpendicular to the protrusion 9a is fixed, and the end 4a of the harness part 4 'on the movable side of the flat harness 4 is bent and fixed in an L shape in the harness fixing member. The portion 4 a is connected and fixed to the connector 18, and the harness portion 4 ′ is connected to, for example, a slide seat auxiliary device or the like via the connector 18.

A slit 19 perpendicular to the left side of the wall 11 on the front side of the case body 2 is provided. The fixed side end 4b of the flat harness 4 is inserted into the slit 19 and a horizontal connector 20 is connected to the fixed side end 4b. Is connected and fixed, and a wire harness (not shown) on the power source side is connected to the connector 20. A block-shaped spring fixing portion 21 is provided on the right side of the slit 19 from the front wall 11 to the bottom wall 10, and the fixed end portion 7 a of the winding spring 7 is inserted and fixed to the L-shaped slit 21 a of the spring fixing portion 21. .

The rotating body cover 5 includes a horizontal bottom wall 5a and an upper wall 5b, a vertical left wall 5c that connects the upper and

lower walls

5a and 5b, a front short (arc-shaped) wall 5d, and a left wall. It is comprised with the said slide engagement part 16 protrudingly provided by the part 5c. The bottom wall 5 a is in sliding contact with the bottom wall 10 of the case 2. The upper wall 5b is separated from the side wall 5c, and is locked to the side wall 5c by locking means, for example.

FIG. 2 is a view in which the rotating body cover 5 of FIG. 1 is removed (the configuration other than the rotating body cover is the same as in FIG. 1), and the flat harness 4 is wound around the rotating body 3 so as to overlap in the same direction. A movable side end 4 a and a fixed side end 4 b of the harness 4 are led out from the rotating body 3 in different directions.

The rotating body 3 is composed of upper and lower horizontal (parallel)

plate portions

3a and 3b and a vertical shaft portion 22 that connects the upper and

lower plate portions

3a and 3b at the center. The upper and

lower plate portions

3a, 3b and the shaft portion 22 are fixed, for example, by fitting upper and lower bosses (a pair preferably on both sides instead of the center) and holes (not shown). A circular hole 23 is provided at the center of the upper and

lower plates

3a and 3b, and circular bosses (not shown) of the upper and

lower walls

5a and 5b of the rotating body cover 5 of FIG. Accordingly, the rotating body 3 is rotatably supported by the rotating body cover 5.

FIG. 3 shows an embodiment of the flat harness assembly 24 in a state in which the flat harness 4 is wound around the shaft portion 22 of the rotating body 3.

4A, the shaft portion 22 is provided with a U-shaped slit hole (slit portion) 25 in a range from the upper end surface 22a of the shaft portion 22 to the upper side of the lower end surface 22b. The slit hole 25 is composed of a semicircular portion 25a and a parallel linear portion 25b in plan view.

As shown in FIG. 4B, the longitudinal intermediate portion (central portion) of the flat harness 4 is folded back into a U-shape (the folded portion is denoted by reference numeral 4c) and inserted and fitted into the slit hole 25, as shown in FIG. As shown in FIG. 3, the two harness portions 4 ′ and 4 ″ led out from the slit hole 25 are wound in the same direction along the outer peripheral surface 22c of the shaft portion 22 (clockwise in this example). Are wound around a plurality of layers, and one harness portion 4 ″ is directed forward and the other harness portion 4 ′ is led backward from the shaft portion 22 in the tangential direction of the winding portion. A winding portion of the flat harness 4 is denoted by reference numeral 4e (FIG. 3).

3 or FIG. 4B, the upper and

lower plate portions

3a and 3b of the rotating body 3 in FIG. 2 are assembled, and the rotating body 3 is rotatably supported by the rotating body cover 5 in FIG. The rotating body cover 5 is for smoothly moving the rotating body 3 along the guide rail 6 while restricting the position of the rotating body 3 in the case.

In FIG. 2, when the shaft portion 22 is rotatably provided with respect to the upper and

lower plate portions

3a and 3b, for example, the slide engaging portion 16 of FIG. It is possible to dispense with the cover 5. In this case, the shaft portion 22 is rotatable within the case.

In FIG. 4A, the U-shaped slit hole 25 is provided without penetrating to the lower end surface 22b of the shaft portion 22, but a slit hole penetrating to the lower end surface 22b of the shaft portion 22 can also be provided. is there. In order to prevent contact between the upper end of the flat harness 4 of FIG. 4C and the upper plate portion 3a, a short circular (same diameter) spacer (not shown) is provided on the shaft portion 22 with a hole and a boss portion (see FIG. (Not shown) may be fixed.

It is also possible to form the shaft portion 22d inside the U-shaped slit hole 25 in a piece shape with another member and fix it to the shaft portion 22 with screws or the like. The slit hole 25 may not pass through the axial center of the shaft portion 22. Since the flat harness 4 is configured by covering a plurality of parallel conductor portions (not shown) with an insulating sheet, the slit hole 25 has a smooth U shape or arc shape to prevent breakage of the conductor portion. It is preferable that the outer peripheral end 25a of the inner shaft portion 22d of the slit hole 25 and the outer peripheral end 25b of the outer shaft portion 22e are curved rather than edges. The shaft portion 22 preferably has a circular cross section, but may have a polygonal cross section.

In FIG. 3, the two harness portions 4 ′ and 4 ″ following the folded portion 4 c of the flat harness 4 are overlapped and wound around the shaft portion 22. 22, one harness portion 4 'is led out in the tangential direction of the winding portion while being wound in an even number layer in the radial direction of 22 and wound in a clockwise manner from the winding start portion 4d to an odd number layer (4e portion), The other harness part 4 ″ is led out in the tangential direction of the winding part on the opposite side 180 ° from the winding start part 4d, and is further wound in an even number of layers. Winding start Following the winding portion 4 ₂ is one of the harness portion 4 'became outward at portions 4d, the winding portion 4 ₁ is followed on the other harness portion 4 "became the inside." On the other hand, "" the other " Is for convenience of explanation.

させる By increasing / decreasing the number of windings of the flat harness 4, it is possible to appropriately cope with increase / decrease in the pull-out length (extension stroke) of the flat harness 4. Since the flat harness 4 is wound clockwise in the example of FIG. 3, the shaft portion 22 rotates clockwise when the flat harness 4 is pulled out from the shaft portion 22, and the urging force of the winding spring 7 (FIG. 1) The flat harness 4 is wound up while the shaft portion 22 rotates counterclockwise. When the flat harness 4 is wound counterclockwise, the shaft portion 22 rotates counterclockwise when the harness is pulled out, and the flat harness 4 is taken up while the shaft portion 22 rotates clockwise by the biasing force of the winding spring 7. It is done.

It is also possible to cause the flat harness 4 to be wound up with the spring property of the flat harness itself (force to return to the initial winding shape from the extended state in the pulling direction) without using the winding spring 7.

FIG. 5 shows a state in which the movable harness portion 4 ′ of the flat harness 4 is pulled backward from the rotating body 3 and the flat harness 4 is extended. Within the case 2, the rotating body 3 moves rearward together with the rotating body cover 5, and one (driven side) harness portion 4 ″ from the harness fixing portion (slit) 19 on the front wall 11 side of the case 2 to the rear rotating body 3. At the same time, the other (movable side) harness part 4 'extends rearwardly from the rotating body 3 with a length similar to that of the harness part 4 ".

In this example, as shown in FIG. 6, the other harness portion 4 ′ drawn backward from the rotating body 3 is accommodated inside the narrow portion (narrow portion) 2 b of the case 2. The case 2 is composed of a first wide portion 2a and a second narrow portion 2b. Like the wide portion 2a, the narrow portion 2b is surrounded by the upper, lower, left and right wall portions 26-29 and formed in a cylindrical shape, and the upper wall portion 26 is the rear half portion of the cover (not shown).

The second guide rail 8 is provided linearly from the wide portion 2 a to the narrow portion 2 b, and the harness fixing member 9 slides along the second guide rail 8. The first guide rail 6 is formed only on the wide portion 2 a, and the rotating body 3 along the first guide rail 6 together with the rotating body cover 5 is a step-shaped rear end from the front end (front wall) 11 side of the wide portion 2 a. Within the range up to 12 (rear wall or step wall), it advances and retreats in the wide part 2a.

The space 30 of the part shown with the dashed-two dotted line adjacent to the left side of the narrow part 2b of FIG. 6 is reduced, and the case 2 is made compact, lightweight, and space-saving. As shown in the schematic diagram of FIG. 7, when the flat harness 4 is pulled out and retracted, the rotating body 3 advances and retreats only in the range of about half the total length of the case 2, so the case portion along the harness portion 4 ′ when pulled out (extend) Is reduced to a rectangular shape like a space 30 indicated by a two-dot chain line.

In the example of FIG. 6, since the harness fixing member 9 is slidably engaged with the second guide rail 8 in the case, the narrow portion 2b of the case 2 is necessary. The narrow portion 2b of the case 2 is not required, an opening 31 (FIG. 5) is provided at the rear end of the wide portion 2a of the case 2, and the harness fixing member 9 is led out from the opening 31 to the rear of the case (outside). In this case, the total length of the case 2 in FIG. 6 is reduced to half. In this case, the upward projecting portion 9a of the harness fixing member 9 is projected not horizontally upward but rearward, and an L-shaped connector (not shown) on the attachment side (the other side) is attached to the connector 18 at the tip of the projecting portion 9a. ) Is preferably connected.

In FIG. 5, the belt-like winding spring 7 is routed along the inner surface of the harness portion 4 ″ that extends between the rotating body 3 and the harness fixing portion (slit) 19 of the case front wall 11. ”And spirally wound around the rotating body 3. As the winding spring 7, a spring or a constant load spring is suitable. The winding spring 7 is wound in a free state and exhibits a spring force in the direction of reduced diameter, and the flat harness 4 is wound around the rotating body 3 from the extended state by the spring force. The flat harness 4 is extended (drawn) against the urging force of the winding spring 7.

For example, the winding spring 7 is disposed along the front wall 11 side of the case 2 in FIG. 1 without being along the flat harness 4, and the movable end of the winding spring 7 is fixed to the rotating body cover 5 or the rotating body 3 to be flat. It is also possible to wind the harness 4. In this case, a tension coil spring or the like can be used in place of the winding spring 7.

FIG. 8 is a view of the state in which the rotating body 3 and the rotating body cover 5 are removed from FIG. 5, and the flat harness near the rear end 12 of the wide portion 2a of the case 2 as shown by the solid line when the flat harness 4 is pulled out. 4 winding part 4e is wound to a small diameter in substantially one round, and the harness part 4 'on the drawer side (movable side) extends linearly in the tangential direction of the winding part along the tip of the harness folding part 4c. A harness portion 4 ″ on the driven side (fixed side) is linearly extended from 4c to the harness fixing portion 19 at the front end 11 of the case in the tangential direction of the winding portion.

When the flat harness 4 is retracted, the flat harness 4 is wound around the front end 11 side of the wide portion 2a of the case 2 with a large diameter as shown by a chain line, and the harness fixing member 9 is positioned in the vicinity of the rear of the harness winding portion 4e. .

The winding spring 7 only needs to be provided with a length about half that of the harness portion 4 ″ on the driven side (fixed side) when the flat harness 4 is pulled out as shown by the solid line, and the tip 7b of the winding spring 7 is the harness portion on the driven side. 4 "fixed or in free contact.

In order to make winding of the flat harness 4 more reliable, the winding spring 7 is arranged over the entire length of the driven harness portion 4 ″, and the tip 7b of the winding spring 7 is illustrated in the shaft portion 22 of the rotating body 3. The slit 7 is fixed in the slit (the slit is provided separately from the slit hole 25), or the distal end portion 7b of the winding spring 7 is inserted and fixed in the slit hole 25 along the folded portion 4c of the flat harness 4.

The base end 7a of the winding spring 7 is fixed to a spring fixing portion 21 on the case front end side. When the restoring force in the unwinding direction of the winding portion 4e of the flat harness 4 is increased using the winding spring 7, the rotating body 3 and the rotating body cover 5 can be eliminated. When the restoring force in the rewinding direction is high due to the rigidity of the flat harness 4 itself, the winding spring 7 can be omitted.

FIG. 9 shows an application example of the power feeding device 1. In order to always supply power to the automobile slide seat 32, the case 2 of the power supply device 1 is arranged in the front-rear direction on the vehicle floor 33, and the harness fixing member 9 side protruding upward from the slit 34 of the upper wall (cover) of the case 2. The connector 18 is connected to a wire harness or an auxiliary machine (not shown) on the slide seat side using a connector. In this example, the wide portion 2a of the case 2 is disposed on the vehicle front side, and the narrow portion 2b is disposed on the vehicle rear side.

The connector 18 moves to the front end side of the wide portion 2a of the case 2 with respect to the seat 32 at the slide forward end position shown by the solid line in FIG. 9, and the narrow portion of the case 2 with respect to the seat 32 at the backward end position shown by the chain line The connector 18 moves to the rear end side of 2b.

The winding state of the flat harness 4 in the case at the forward end position and the backward end position of the seat 32, the position of the rotating body 3, and the like are as shown in FIGS. The winding state of the flat harness 4 in the case at the intermediate slide position of the seat 32, the position of the rotating body 3, and the like are in an intermediate state between the forward end and the backward end of the seat 32.

When the power feeding device 1 is applied to, for example, constant power feeding to a sliding door (not shown) of an automobile other than the slide seat 32, for example, the case 2 is placed in the vicinity of a step portion of a vehicle body doorway (not shown). 6 (the case 2 is placed vertically so that the upper wall of the case 2 in FIG. 6 faces the sliding door), and the harness 18 protruding from the case 2 is attached to the connector 18 on the side of the harness fixing member 9 (not shown) Or directly using a connector to a wire harness (not shown) on the sliding door side.

As the sliding door opens and closes, the flat harness 4 expands and contracts as shown in FIGS. It is also possible to arrange the case 2 not on the vehicle body side but on the sliding door side. In any case, it is necessary to provide a harness surplus length at the crossover portion (between the slide door and the vehicle body) at the initial opening of the slide door so that the slide door is separated from the vehicle body.

It is also possible to eliminate the narrow portion 2b of the case 2 and directly lead the movable harness portion 4 'of the flat harness 4 to the outside from the rear opening 31 (FIG. 5) of the wide portion 2a of the case 2. However, in this case, it is necessary that the movable harness portion 4 ′ does not interfere with the passenger or the like between the slide door and the vehicle body or between the slide seat and the vehicle floor.

It is also possible to expose the movable-side harness portion 4 ′ and apply the power supply device to, for example, a hinge-turning door (front door or the like) of an automobile instead of a sliding door. In this case, the case 2 is disposed on the vehicle body, and the harness part 4 'on the movable side is connected to the door side by the connector 18 on the harness fixing member side. The orientation of the connector 18 is not limited to the harness orthogonal direction and may be the harness longitudinal direction.

The configuration of the above embodiment is effective not only as a power supply device but also as a power supply structure, a power supply harness wiring structure, and the like.

According to the power supply device 1 of the above-described embodiment, for example, the storage space of the case 2 on the vehicle floor 33 with respect to the moving distance of the slide seat 32 may be about half the length, and the space on the mounting side can be saved. . Further, by forming half of the entire length of the case 2 into a narrow width (2b), or by eliminating the narrow width portion 2b of the case 2 and halving the length of the case 2, a reduction in weight and space saving, It can be generalized. Further, since the flat harness 4 is always pulled in the rewinding direction by the restoring force of the spring member 7 or the flat harness 4 itself in the case, the flat harness 4 does not buckle and the flat harness 4 can be expanded and contracted. This is done smoothly and increases the reliability of constant power supply.

In the above embodiment, the winding spring 7 is arranged along the driven harness portion 4 ″. However, the winding spring 7 can be arranged along the movable harness portion 4 ′ instead of the driven side. In either case, one harness part (4 ′ or 4 ″) is wound by the elasticity of the winding spring 7 and at the same time, the other harness part (4 ″ or 4 ′) is one harness part (4 ′). Or 4 ″).

Moreover, in the said embodiment, although demonstrated in the example which folded the flat harness 4 of 1 sheet in the U-shape, for example instead of 1 sheet, the flat harness 4 of 2 sheets or more sheets of the number of flat harnesses 4 is used in the thickness direction. It is also possible to simultaneously fold it into a U shape while being superimposed on each other to cope with the connection of multiple circuits.

The present invention is based on a Japanese patent application (Japanese Patent Application No. 2009-054618) filed on March 9, 2009, the contents of which are incorporated herein by reference.

The power supply device according to the present invention can be used for constant power supply to a movable structure such as a slide seat, a slide door, a rotary door, or the like in an automobile, a vehicle other than an automobile, or a device other than a vehicle.

DESCRIPTION OF SYMBOLS 1 Power feeder 2 Case 2a Wide part 2b Narrow part 3 Rotating body 4 Flat harness 4 'Movable part 4' Harness part 4 "Fixed

side harness part

4a, 4b End part 4c Folding part 4e Winding part 5 Rotating body cover 7 Winding Spring 25 Slit hole (slit part)

Claims

A folded portion in which the middle in the longitudinal direction of the flexible flat harness is folded, and a wound portion in which two harness portions following the folded portion are overlapped and wound in a plurality of layers in the same direction. A harness holding portion for holding the flat harness;
A case for movably housing the harness holding portion;
With
Each of the end portions of the two harness portions is led out from the winding portion.
The power feeding device according to claim 1, wherein one end of the two harness portions is fixed to the case, and the other end is movable with respect to the case.
The feeding device according to claim 1 or 2, wherein each end of the two harness parts is led out in the opposite direction from the winding part.
The harness holding part has a rotating body,
The power feeding device according to any one of claims 1 to 3, wherein the folded portion of the flat harness is fixed to the rotating body, and the winding portion is formed along an outer periphery of the rotating body.
The power feeding device according to claim 4, wherein a U-shaped slit portion for inserting the folded portion is provided in the rotating body.
The harness holding portion includes a rotating body cover that covers the rotating body and rotatably holds the rotating body,
6. The power feeding device according to claim 4, wherein the rotating body cover is slidably engaged with the case.
The case has a wide part for movably accommodating the winding part, and a width for routing the harness part extended from the winding part and extended to the end part movable with respect to the case. The power feeding device according to any one of claims 1 to 6, further comprising a narrow portion.