Cable winding device and sheet power supply device

Abstract

To provide cable take-up device capable of drawing or taking up a flat cable according to a slide operation of a mounting object, and preventing twist of the flat cable due to a rotation operation of the mounting object.SOLUTION: A housing part 3 for housing a flexible flat cable 2 is partitioned into a center side space Si and an outer peripheral side space So by a partition part 4, and a boundary portion 23 between a portion housed in the center side space Si and a portion housed in the outer peripheral side space So is held by a holding part 5. In the flexible flat cable 2, a center side winding part 21 spirally wound with a rotation shaft 6 as a center is formed in the center side space Si, and an outer peripheral side winding part 22 spirally wound with the partition part 4 as a center is formed in the outer peripheral side space So. One end extending from an inner peripheral side portion of the center side winding part 21 is connected to an electric member of a seat 200, and the other end extending from the outer peripheral side portion of the outer peripheral side winding part 22 is connected to an electric member of a vehicle 100.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a cable winding device capable of coping with both the sliding operation and the rotational operation of an object to be attached, and a sheet power supply device using such a cable winding device.

Background Art

[0002] Conventionally, a cable winding device has been known (see Patent Document 1). The cable winding device includes a strip-shaped flat cable and a housing portion for housing the flat cable, and is configured such that the flat cable is pulled out or wound up in accordance with the sliding operation of the object to be attached. Such a cable winding device is used as a sheet power supply device for supplying power to a vehicle seat.

[0003] By the way, in recent years, a seat that can perform not only a sliding operation but also a rotational operation has been proposed. When a conventional cable winding device is used for such a seat, the flat cable may be twisted by the rotational operation, and the flat cable may be entangled. In addition, there is also a possibility that smooth pulling out or winding up cannot be performed due to the twisting of the flat cable.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] An object of the present invention is to provide a cable winding device capable of pulling out or winding up a flat cable in accordance with the sliding operation of an object to be attached and preventing the flat cable from being twisted by the rotational operation of the object to be attached, and a sheet power supply device using such a cable winding device.

Means for Solving the Problem

[0006] This invention comprises a strip-shaped flat cable, a housing portion for housing the flat cable, a partition portion for partitioning the internal space of the housing portion into a central space and an outer peripheral space, and a holding portion for holding a boundary portion between a portion of the flat cable housed in the central space and a portion housed in the outer peripheral space. A rotating shaft is provided at the central portion of the central space, which rotates about an axis along the width direction of the flat cable while holding the flat cable. A guide port for guiding the flat cable, which is drawn out from the inside to the outside or wound up from the outside to the inside of the outer peripheral space, is provided at the outer edge portion of the outer peripheral space. A central winding portion wound in a spiral shape around the rotating shaft is formed in the central space of the flat cable, and an outer peripheral winding portion wound in a spiral shape around the partition portion is formed in the outer peripheral space. One end extending from the inner peripheral side portion of the central winding portion of the flat cable is connected to an electrical member to be attached that enables sliding and rotating operations, and the other end extending from the outer peripheral side portion of the outer peripheral winding portion of the flat cable is connected to an electrical member on the electrical supply source side. It is a cable winding device.

[0007] According to this invention, it is possible to pull out or wind up the flat cable according to the sliding operation of the object to be attached, and it is possible to prevent the flat cable from being twisted by the rotating operation of the object to be attached.

[0008] Specifically, when the object to be attached of the cable winding device moves to one side in the sliding direction (sliding operation) and the flat cable is pulled, the outer peripheral winding portion in the outer peripheral space is wound up and will be drawn out toward the outside of the outer peripheral space. Conversely, when the object to be attached of the cable winding device moves to the other side in the sliding direction (sliding operation) and the flat cable is pushed into the inside of the outer peripheral space from the guide port, the outer peripheral winding portion in the outer peripheral space is unwound and will be wound toward the inside of the outer peripheral space.

[0009] Further, when the object to which the cable winding device is attached rotates (rotates) in one direction of the rotation direction, the rotary shaft rotates in one direction in conjunction with the rotation operation of the object to be attached. Therefore, the central winding portion in the central space is unwound. In this way, by following the rotation operation of the object to be attached, it is possible to prevent the flat cable from being twisted. On the contrary, when the object to which the cable winding device is attached rotates (rotates) in the other direction of the rotation direction, the rotary shaft rotates in the other direction in conjunction with the rotation operation of the object to be attached. Therefore, the central winding portion in the central space is wound up. In this way, by following the rotation operation of the object to be attached, it is possible to prevent the flat cable from being twisted.

[0010] As an aspect of the present invention, the winding direction of the central winding portion and the winding direction of the outer peripheral winding portion may be the same direction. According to the present invention, when the central winding portion of the flat cable is wound up or unwound, it is possible to prevent a local load from acting on the boundary portion between the central winding portion and the outer peripheral winding portion. Also, when the outer peripheral winding portion of the flat cable is wound up or unwound, it is possible to prevent a local load from acting on the boundary portion between the central winding portion and the outer peripheral winding portion.

[0011] As another aspect of the present invention, the holding portion may be an insertion hole through which the flat cable formed in the partition portion is inserted. According to the present invention, the central winding portion and the outer peripheral winding portion of the flat cable can be configured by a single continuous flat cable. Also, it is possible to reliably hold the boundary portion between the central winding portion and the outer peripheral winding portion while having a simple structure.

[0012] As another aspect of the present invention, a restricting piece for restricting the leading direction of the flat cable led out from the holding portion may be provided. According to the present invention, the lead-out direction of the flat cable can be reliably regulated. Therefore, it is possible to prevent the flat cable from being bent due to the sliding operation and rotational operation of the object to be attached, and a local load from acting thereon.

[0013] As an aspect of the present invention, the flat cable may be a flexible flat cable in which one or a plurality of sheets are stacked. According to the present invention, the flat cable can be curved with a small bending radius. Therefore, the diameters of the central side space and the outer peripheral side space can be reduced, and thus it is possible to miniaturize the cable winding device. Further, since the curved flat cable has a high elasticity to return to its original shape, each winding portion becomes loose and spreads only by the repulsive force thereof. Therefore, it is also possible to realize a simplification of the structure.

[0014] As an aspect of the present invention, there is provided a sheet power supply device using the above-described cable winding device, in which the rotating shaft is connected to a sheet capable of sliding operation and rotational operation, and one end extending from the inner peripheral side portion of the central side winding portion in the flat cable is connected to an electrical member of the sheet, and the other end extending from the outer peripheral side portion of the outer peripheral side winding portion in the flat cable is connected to an electrical member on the electrical supply source side. According to the present invention, it is possible to pull out and wind up the flat cable in accordance with the sliding operation of the sheet, and to prevent the flat cable from being twisted by the rotational operation of the sheet.

Effects of the Invention

[0015] There is provided a cable winding device capable of pulling out and winding up a flat cable in accordance with the sliding operation of an object to be attached, and preventing the flat cable from being twisted by the rotational operation of the object to be attached, and a sheet power supply device using such a cable winding device.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Embodiments for Carrying Out the Invention

[0017] One embodiment of this invention will be described in detail based on the drawings. In this application, arrow F indicates the front side, arrow B indicates the rear side, arrow L indicates the left side, and arrow R indicates the right side. Also, arrow U indicates the upper side and arrow D indicates the lower side. In this application, the front-rear direction will be described as X, the left-right direction as Y, and the up-down direction as Z.

[0018] FIG. 1 is a perspective view of the area around the seat 200 in the vehicle 100. FIG. 2 is a perspective view of the cable winding device 1, and FIG. 3 is an exploded perspective view of the cable winding device 1. FIG. 4 is a plan view of the lower case 31 constituting the housing portion 3, and FIG. 5 is a plan view of the state where the flat cable 2 is housed in the lower case 31. Regarding FIGS. 4 and 5, a partially enlarged view of the lower case 31 is shown.

[0019] Further, FIG. 6 is an explanatory diagram showing an operation mode when the sheet 200 is moved to the rear side B, and FIG. 7 is an explanatory diagram showing an operation mode when the sheet 200 is moved to the front side F. FIG. 8 is an explanatory diagram showing an operation mode when the sheet 200 is rotated around the left side Rl, and FIG. 9 is an explanatory diagram showing an operation mode when the sheet 200 is rotated around the right side Rr. Regarding FIGS. 6 to 9, (a) shows the operation mode of the sheet 200, and (b) shows the operation mode of the cable winding device 1.

[0020] As shown in FIG. 1, the vehicle 100 has a seat support structure 300 that supports the sheet 200. The seat support structure 300 includes a pair of rails 301, a pair of sliders 302, a single lower plate 303, and also a single upper plate 304.

[0021] The rails 301 extend along the front-rear direction X of the vehicle 100. Each rail 301 is arranged in parallel with a predetermined interval and is fixed to the floor panel 101 of the vehicle 100. On the upper surface portion of each rail 301, a track groove 30r is formed.

[0022] The slider 302 is supported in a state of being fitted into the track groove 30r of the rail 301. Therefore, each slider 302 is movable along the front-rear direction X (see arrows Sf, Sb). On the upper surface portion of each slider 302, a bolt 30b protrudes upward toward the upper side U.

[0023] The lower plate 303 has through holes formed at both end portions in the left-right direction Y, and is supported in a state where the bolts 30b of the slider 302 are inserted therethrough. Therefore, the lower plate 303 is movable along the front-rear direction X together with the slider 302 (see arrows Sf, Sb). A cylindrical rotating shaft portion 30s is provided at the central portion of the lower plate 303.

[0024] The upper plate 304 is provided with a rotation receiving portion at its central part and is supported with the rotation shaft portion 30s of the lower plate 303 inserted therein. Therefore, the upper plate 304 is movable along the front-rear direction X together with the lower plate 303 (see arrows Sf, Sb), and is rotatable with respect to the lower plate 303 (see arrows Rl, Rr). And, on the upper surface portion of the upper plate 304, the seat cushion 201 of the seat 200 is placed and fixed.

[0025] With such a configuration, the seat 200 is movable to the front side F and the rear side B of the vehicle 100 (see arrows Sf, Sb). Also, the seat 200 is rotatable around the left side and the right side of the vehicle 100 (see arrows Rl, Rr). However, the configuration of the seat support structure 300 is not limited. Also, the use of the seat 200 and the seat support structure 300 is not limited to vehicles such as automobiles. For example, it may be for vehicles such as railways, or for ships or airplanes.

[0026] Note that a seat power supply device 10 is attached to the lower plate 303. The seat power supply device 10 is mainly constituted by a cable winding device 1, and a rotating shaft 6 that constitutes the cable winding device 1 is connected to the seat 200 via the rotation shaft portion 30s of the lower plate 303. Also, one end of the flat cable 2 is connected to an electrical member of the seat 200, and the other end of the flat cable 2 is connected to an electrical member of the vehicle 100. In the following, the flat cable 2 will be described as a flexible flat cable 2.

[0027] The cable winding device 1 will be described with reference to FIGS. 2 to 5. The cable winding device 1 includes a belt-shaped flexible flat cable 2, a housing portion 3 that houses the flexible flat cable 2, and a rotating shaft 6 that rotates around the direction along the bandwidth direction (vertical direction Z) of the flexible flat cable 2 while holding the flexible flat cable 2.

[0028] The flexible flat cable 2 is a strip-shaped electric wire. The flexible flat cable 2 has a structure in which a plurality of conductors arranged in parallel are sandwiched by a sheet-shaped insulator. Therefore, it can be bent with a small bending radius and has high elasticity to return to its original shape even when bent. The flexible flat cable 2 may be used alone or a plurality of them may be stacked and used.

[0029] Further, the flexible flat cable 2 is housed in the housing portion 3 in a state of being wound in a spiral shape. More specifically, the centrally wound portion 21 wound in a spiral shape is housed in the central space Si in the housing portion 3, and the outer peripherally wound portion 22 wound in a spiral shape is housed in the outer peripheral space So in the housing portion 3. The winding directions of the centrally wound portion 21 and the outer peripherally wound portion 22 are counterclockwise from the inner diameter side to the outer diameter side when viewed from the upper side U along the central axis C (see arrows Ri, Ro in FIG. 5).

[0030] The housing portion 3 is a housing for housing the flexible flat cable 2. The housing portion 3 has a lower case 31 in which a central space Si and an outer peripheral space So are formed, and an upper cover 32 that is fitted to the lower case 31 and closes the open ends of the central space Si and the outer peripheral space So (the opening on the upper side U). The lower case 31 and the upper cover 32 will be described below.

[0031] The lower case 31 has a substantially circular bottom plate 311, an outer peripheral plate 312 extending upward U from the outer edge portion of the bottom plate 311, a right end plate 313 extending forward F from the right end edge of the outer peripheral plate 312, and a front end plate 314 extending rightward R from the front end edge of the outer peripheral plate 312. A through hole 31h penetrating in the vertical direction Z is formed in the bottom plate 311 around its central axis C.

[0032] In addition, the lower case 31 has a substantially cylindrical middle plate 315 centered on its central axis C. Such a middle plate 315 extends upward U from the middle part in the radial direction of the bottom plate 311, and partitions the internal space into an inner central space Si and an outer peripheral space So. Therefore, it can be said that the middle plate 315 is a partition portion 4 that partitions the central space Si and the peripheral space So.

[0033] Furthermore, an insertion hole 31s through which the flexible flat cable 2 is inserted is formed in the middle plate 315. Such an insertion hole 31s is a slit-shaped narrow passage that curves radially inward from the outer peripheral surface 31a of the middle plate 315 (see reference numeral 31sc in FIGS. 4 and 5) and then contacts the inner peripheral surface 31b of the middle plate 315, and can securely hold the inserted flexible flat cable 2 by sandwiching it. Therefore, it can be said that the insertion hole 31s is a holding portion 5 that holds the boundary portion 23 between the central winding portion 21 accommodated in the central space Si and the outer peripheral winding portion 22 accommodated in the outer peripheral space So in the flexible flat cable 2.

[0034] In addition, a guide passage 31p for the flexible flat cable 2 is formed in the space surrounded by the aforementioned outer peripheral plate 312, the right end plate 313, and the front end plate 314. The guide passage 31p is composed of a pair of guide plates 316 provided along the front-rear direction X. And the rear end portion of the guide passage 31p is open toward the inside (outer peripheral space So) on the rear side B, and the front end portion thereof is open toward the outside on the front side F. Therefore, it can be said that the guide passage 31p is a guide port 7 that guides the flexible flat cable 2 that is pulled out from the inside to the outside or wound up from the outside to the inside of the outer peripheral space So.

[0035] On the other hand, the upper cover 32 includes a substantially circular cover plate 321, an outer peripheral plate 322 extending downward from the outer edge portion of the cover plate 321 toward the lower side D, a right end plate 323 extending forward from the right end edge of the outer peripheral plate 322, and a front end plate 324 extending rightward from the front end edge of the outer peripheral plate 322. A through hole 32h penetrating in the vertical direction Z is formed in the cover plate 321 around its central axis C.

[0036] Further, the upper cover 32 has a substantially cylindrical inner peripheral plate 325 around its central axis C. Such an inner peripheral plate 325 extends downward from the middle portion in the radial direction of the cover plate 321, and its outer diameter is set slightly smaller than the inner diameter of the outer peripheral plate 312 of the lower case 31. Therefore, when the upper cover 32 is attached to the lower case 31, the outer peripheral plate 312 and the inner peripheral plate 325 are fitted together.

[0037] With such a configuration, the upper cover 32 can close the opening ends of the central space Si and the outer peripheral space So (the openings on the upper side U). At this time, the tip portions of the outer peripheral plate 312 of the lower case 31 and the outer peripheral plate 322 of the upper cover 32 abut against each other. Similarly, the tip portions of the right end plate 313 of the lower case 31 and the right end plate 323 of the upper cover 32, and the tip portions of the front end plate 314 of the lower case 31 and the front end plate 324 of the upper cover 32 also abut against each other.

[0038] Note that in the cable winding device 1 according to the present embodiment, a partition portion 4 is provided on the lower case 31, and the tip portion of such a partition portion 4 is configured to abut against the cover plate 321 of the upper cover 32. In this regard, a partition portion 4 may be provided on the upper cover 32, and the tip portion of such a partition portion 4 may be configured to abut against the bottom plate 311 of the lower case 31. Also in this case, the insertion hole 31s formed in the partition portion 4 may be used as the holding portion 5. Further, the guide port 7 may be provided on the upper cover 32 side.

[0039] Next, the rotating shaft 6 will be described. The rotating shaft 6 is a rotating body that rotates about an axis along the width direction (vertical direction Z) of the flexible flat cable 2 while holding the flexible flat cable 2. The rotating shaft 6 has a rotor 61 that holds the flexible flat cable 2 and a sleeve 62 that functions as an insertion shaft of the rotor 61. The rotor 61 and the sleeve 62 will be described below.

[0040] The rotor 61 has a substantially annular cover plate 611 and a cylindrical plate 612 extending downward D from the inner edge portion of the cover plate 611. A connector holder 613 extending upward U is formed in a part of the circumferential direction of the cover plate 611, and a connector (not shown) electrically connected to each conductor of the flexible flat cable 2 is accommodated inside the connector holder 613.

[0041] Also, the flexible flat cable 2 is wound in a spiral around the cylindrical plate 612. Therefore, the radius of the cylindrical plate 612 is set to be larger than the allowable bending radius of the flexible flat cable 2. Further, the length of the cylindrical plate 612 in the vertical direction Z is set to be longer than the length of the flexible flat cable 2 in the width direction (vertical direction Z). The flexible flat cable 2 is bent upward U at the innermost inner peripheral side portion of the central winding portion 21, and a connector (not shown) described above is attached to the end portion thereof.

[0042] On the other hand, the sleeve 62 has a substantially annular bottom plate 621 and a cylindrical plate 622 extending upward U and downward D from the outer edge portion of the bottom plate 621. A bolt guide 623 extending upward U is formed in the bottom plate 621, and a bolt (not shown) screwed into the rotating shaft portion 30s of the lower plate 303 is inserted inside the bolt guide 623.

[0043] Also, the cylindrical plate 622 is inserted into a through-hole 31h formed in the central portion of the lower case 31. Therefore, the outer diameter of the cylindrical plate 622 is set to be slightly smaller than the inner diameter of the through-hole 31h. Further, the length of the cylindrical plate 622 in the vertical direction Z is set to be sufficiently longer than the length of the through-hole 31h in the vertical direction Z. More specifically, it is set to be sufficiently long by extending long toward the lower side D. Therefore, the head of the aforementioned bolt (not shown) will fit. However, it is only necessary that the rotating shaft 6 rotates in conjunction with the seat 200, and the structure is not limited to this.

[0044] As described above, the cable winding device 1 includes a belt-shaped flexible flat cable 2, a housing portion 3 that houses the flexible flat cable 2, a partition portion 4 that partitions the internal space of the housing portion 3 into a central side space Si and an outer peripheral side space So, and a holding portion 5 that holds a boundary portion 23 between a portion housed in the central side space Si and a portion housed in the outer peripheral side space So of the flexible flat cable 2. Further, a rotating shaft 6 is provided at the central portion of the central side space Si so as to rotate about the direction along the width direction (vertical direction Z) of the flexible flat cable 2 while holding the flexible flat cable 2, and a guide port 7 for guiding the flexible flat cable 2 that is drawn out from the inside to the outside or wound from the outside to the inside is provided at the outer edge portion of the outer peripheral side space So. A central side winding portion 21 wound in a spiral shape around the rotating shaft 6 is formed in the flexible flat cable 2 in the central side space Si, and an outer peripheral side winding portion 22 wound in a spiral shape around the partition portion 4 is formed in the outer peripheral side space So. One end extending from the inner peripheral side portion of the central side winding portion 21 of the flexible flat cable 2 is connected to an electrical member of the seat 200 that enables sliding operation and rotational operation, and the other end extending from the outer peripheral side portion of the outer peripheral side winding portion of the flexible flat cable 2 is connected to an electrical member on the vehicle 100 side.

[0045] According to such a cable winding device 1, the flexible flat cable 2 can be pulled out and wound in accordance with the sliding operation of the sheet 200, and the twisting of the flexible flat cable 2 due to the rotational operation of the sheet 200 can be prevented.

[0046] Specifically, as shown in FIG. 6, when the sheet 200 moves rearward (sliding operation) to pull the flexible flat cable 2 (see arrow Ro), the outer peripheral winding portion 22 in the outer peripheral space So is wound up and is pulled out toward the outside of the outer peripheral space So. On the contrary, as shown in FIG. 7, when the sheet 200 moves forward (sliding operation) to push the flexible flat cable 2 from the guide port 7 to the inside of the outer peripheral space So (see arrow Ru), the outer peripheral winding portion 22 in the outer peripheral space So is unwound and is wound toward the inside of the outer peripheral space So.

[0047] Also, as shown in FIG. 8, when the sheet 200 rotates counterclockwise (rotational operation) (see arrow Tl), the rotating shaft 6 rotates counterclockwise in conjunction with the rotational operation of the sheet 200, so the central winding portion 21 in the central space Si is unwound. Thus, by following the rotational operation of the sheet 200, the twisting of the flexible flat cable 2 can be prevented. On the contrary, when the sheet 200 rotates clockwise (rotational operation) (see arrow Tr), the rotating shaft 6 rotates clockwise in conjunction with the rotational operation of the sheet 200, so the central winding portion 21 in the central space Si is wound up. Thus, by following the rotational operation of the sheet 200, the twisting of the flexible flat cable 2 can be prevented.

[0048] Also, in the cable winding device 1, the winding direction of the central winding portion 21 and the winding direction of the outer peripheral winding portion 22 are the same direction (see arrows Ri, Ro in FIG. 5). According to such a cable winding device 1, when the central winding portion 21 of the flexible flat cable 2 is wound up or unwound, it is possible to prevent a local load from acting on the boundary portion 23 between the central winding portion 21 and the outer peripheral winding portion 22. Also, when the outer peripheral winding portion 22 of the flexible flat cable 2 is wound up or unwound, it is possible to prevent a local load from acting on the boundary portion 23 between the central winding portion 21 and the outer peripheral winding portion 22.

[0049] Further, in the cable winding device 1, the holding portion 5 is an insertion hole 31s through which the flexible flat cable 2 formed in the partitioning portion 4 is inserted. According to such a cable winding device 1, the central winding portion 21 and the outer peripheral winding portion 22 of the flexible flat cable 2 can be configured by a single continuous flexible flat cable 2. Also, while having a simple structure, it becomes possible to reliably hold the boundary portion 23 between the central winding portion 21 and the outer peripheral winding portion 22.

[0050] Further, in the cable winding device 1, the flexible flat cable 2 is a flexible flat cable in which one or a plurality of sheets are stacked. According to such a cable winding device 1, the flexible flat cable 2 can be curved with a small bending radius. Therefore, the diameters of the central space Si and the outer peripheral space So can be reduced, and thus it becomes possible to realize miniaturization of the cable winding device 1. Also, since the curved flexible flat cable 2 has a high elasticity to return to its original shape, each winding portion 21, 22 will unwind and expand only by the repulsive force thereof. Therefore, it is also possible to realize simplification of the structure.

[0051] By the way, the cable winding device 1 according to the present embodiment regulates the leading direction of the flexible flat cable 2 at the insertion hole 31s. In this regard, as shown in FIG. 10, it is conceivable to regulate the leading direction of the flexible flat cable 2 by a regulating piece 317.

[0052] That is, the flexible flat cable 2 may be appropriately curved at the insertion hole 31s to regulate the lead-out direction of the flexible flat cable 2. Alternatively, a regulating piece 317 for regulating the lead-out direction of the flexible flat cable 2 led out from the holding part 5 may be provided.

[0053] Even with such a cable winding device 1, the lead-out direction of the flexible flat cable 2 can be reliably regulated. Therefore, it is possible to prevent the flexible flat cable 2 from being bent and locally loaded due to the sliding operation and rotational operation of the seat 200.

[0054] In the correspondence between the configuration of this invention and the above-described embodiment, the cable winding device corresponds to the cable winding device 1, the flat cable corresponds to the flexible flat cable 2, the accommodating part corresponds to the accommodating part 3, the partitioning part corresponds to the partitioning part 4, the holding part corresponds to the holding part 5, the rotating shaft corresponds to the rotating shaft 6, the guide port corresponds to the guide port 7, the seat power supply device corresponds to the seat power supply device 10, the central winding part corresponds to the central winding part 21, the outer peripheral winding part corresponds to the outer peripheral winding part 22, the accommodating case corresponds to the lower case 31, the accommodating cover corresponds to the upper cover 32, the regulating piece corresponds to the regulating piece 317, the insertion hole corresponds to the insertion hole 31s, the electric power supply source corresponds to the vehicle 100, the attachment target corresponds to the seat 200, the central space corresponds to the central space Si, the outer peripheral space corresponds to the outer peripheral space So, This invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

[0055] For example, in the cable winding device 1, the winding directions of the central winding portion 21 and the outer peripheral winding portion 22 are counterclockwise from the inner diameter side toward the outer diameter side when viewed from the upper side U along the central axis C. In this regard, as shown in FIG. 11, it is conceivable to reverse the winding direction of either the central winding portion 21 or the outer peripheral winding portion 22 (see the arrows Ri and Ro in FIG. 11).

[0056] Also, in the cable winding device 1, the flexible flat cable 2 has been described as a flexible flat cable. However, a so-called ribbon wire with a flat cross-sectional shape may also be used. A ribbon wire is formed by arranging and integrating wires coated with conductors in parallel, and can be bent with a small bending radius in the same manner as a flexible flat cable. Even if it is a ribbon wire, it is possible to use one or a plurality of them by overlapping.

[0057] Furthermore, in the cable winding device 1, which embodies the technical idea of the present invention, the case where it is applied to the sheet power supply device 10 of the sheet 200 that enables sliding operation and rotational operation has been described. However, it is also conceivable to apply it not only to rotational operation but also to the steering power supply device of a steering handle that enables telescopic operation. That is, the technical idea of the present invention can also be embodied as a so-called rotary connector device.

Explanation of Reference Numerals

[0058] 1... Cable winding device 2... Flat cable 3... Accommodating portion 4... Partition portion 5... Holding portion 6... Rotation shaft 7... Guide port 10... Sheet power supply device 21... Central winding portion 22... Outer peripheral winding portion 31... Lower case 32... Upper cover 317... Regulation piece 31s…Insertion hole 100…Vehicle 200…Seat Si…Central side space So…Peripheral side space

Claims

1. A strip-shaped flat cable, a housing portion for housing the flat cable, a partition portion for partitioning the internal space of the housing portion into a central space and an outer peripheral space, and a holding portion for holding a boundary portion between a portion of the flat cable housed in the central space and a portion housed in the outer peripheral space, a rotating shaft is provided at a central portion of the central space, which rotates about an axis along the width direction of the flat cable while holding the flat cable, a guide port for guiding the flat cable, which is drawn out from the inside to the outside or wound up from the outside to the inside of the outer peripheral space, is provided at an outer edge portion of the outer peripheral space, a central winding portion wound in a spiral shape around the rotating shaft in the central space is formed on the flat cable, and an outer peripheral winding portion wound in a spiral shape around the partition portion in the outer peripheral space is formed, one end extending from an inner peripheral side portion of the central winding portion of the flat cable is connected to an electrical member to be attached capable of sliding and rotating operations, and the other end extending from an outer peripheral side portion of the outer peripheral winding portion of the flat cable is connected to an electrical member on the electrical supply source side Cable winding device.

2. The cable winding device according to claim 1, wherein the winding direction of the central winding portion and the winding direction of the outer peripheral winding portion are the same direction. The cable winding device according to claim 1.

3. The cable winding device according to claim 1, wherein the holding portion is an insertion hole formed in the partition portion through which the flat cable is inserted. The cable winding device according to claim 1.

4. The cable winding device according to claim 1, wherein a regulating piece for regulating the leading direction of the flat cable led out from the holding portion is provided. The cable winding device according to claim 1.

5. The cable winding device according to claim 1, wherein the flat cable is a flexible flat cable formed by laminating one or more sheets. The cable winding device according to claim 1.

6. A sheet power supply device using the cable winding device according to any one of claims 1 to 5, the rotating shaft is connected to a sheet capable of sliding and rotating operations, one end extending from an inner peripheral side portion of the central winding portion of the flat cable is connected to an electrical member of the sheet, and the other end extending from an outer peripheral side portion of the outer peripheral winding portion of the flat cable is connected to an electrical member on the electrical supply source side Sheet power supply device.

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