Vehicle seat

Abstract

To increase the degree of freedom of arrangement and wiring of an electrical device in a vehicle seat, and to prevent a wiring holding member from hindering the action of an opening provided in a pressure receiving member.SOLUTION: A vehicle seat includes a seat cushion frame (10), a pressure receiving member (11) supported by the seat cushion frame (10), an electric fan device (26) provided below the pressure receiving member (11), and a sheet-shaped cable holding member (40) provided on the pressure receiving member (11) and configured to hold a cable (45) connected to the electric fan device (26), wherein the electric fan device (26) includes an air outlet 27A facing a first opening (28) formed in the pressure receiving member (11), and the cable holding member (40) includes a second opening (47) including a portion overlapping the first opening (28).SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a vehicle seat. [Background technology]

[0002] There is known a vehicle seat in which electric wires, such as power lines that supply power to electrical devices incorporated in the vehicle seat and signal transmission lines that transmit electric signals, are wired to a spring structure of the seat cushion (for example, Patent Document 1). This spring structure has a synthetic plate in which the electric wires are embedded by insert molding. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-137066 Summary of the Invention [Problem to be solved by the invention]

[0004] In the vehicle seat shown in Patent Document 1, the entire synthetic material plate for wiring needs to be positioned so as to avoid interference with electrical devices incorporated in the vehicle seat.

[0005] Therefore, in the conventional technology in which a synthetic material plate is used for wiring, the degree of freedom in the relative arrangement of the electrical device and the synthetic material plate is low, and the arrangement position of these is restricted. In other words, the degree of freedom in the arrangement of the electrical device and the wiring is low. This causes a decrease in the degree of freedom in the design of the vehicle seat.

[0006] When a vehicle seat is provided with a pressure-receiving member for supporting a seated occupant and an electric fan unit, an opening may be provided in the pressure-receiving member at the portion facing the air outlet of the electric fan unit so as not to obstruct the flow of air. In such a case, it is preferable that a plate-shaped wiring retaining member, such as a synthetic plate, provided on the pressure-receiving member is configured so as not to obstruct the function of the opening provided in the pressure-receiving member.

[0007] The problem that the present invention aims to solve is to provide a vehicle seat that allows a high degree of freedom in the placement and wiring of electrical devices, and in which the wiring holding member does not interfere with the function of the opening provided in the pressure-receiving member. [Means for solving the problem]

[0008] In order to solve the above-mentioned problems, one aspect of the present invention is a vehicle seat (1) comprising a frame (10), a pressure-receiving member (11) supported by the frame and supporting an occupant, an electrical device (26) provided on the pressure-receiving member, and a sheet-like cable holding member (40) provided on the pressure-receiving member and holding a cable (45) connected to the electrical device, wherein the electrical device includes a portion (27A) facing a first opening (28) formed in the pressure-receiving member, and the cable holding member has a second opening (47) including a portion overlapping the first opening.

[0009] This configuration allows for a high degree of freedom in the placement and wiring of the electrical devices, and the cable holding member does not block the first opening and does not impede the function of the first opening.

[0010] In the above aspect, preferably, the electrical device is an electric fan unit (26) including an air duct (27), the air duct having an air outlet (27A) opening toward the pressure-receiving member, and the air outlet including a portion facing the first opening.

[0011] With this configuration, the air blowing out from the air outlet is not hindered by the pressure-receiving member and the cable holding member.

[0012] In the above aspect, the cable holding member preferably has at least one fixing portion (46) near the outer edge of the second opening for fixing the cable holding member to the pressure-receiving member.

[0013] According to this configuration, the outer peripheral edge of the second opening of the cable holding member is prevented from being separated from the pressure-receiving member.

[0014] In the above aspect, the cable holding member preferably has a third opening (48) at a position corresponding to the mounting portion of the electrical device relative to the pressure-receiving member.

[0015] With this configuration, the cable holding member does not interfere with the mounting portion of the electrical device.

[0016] In the above aspect, the cable holding member preferably has a different hue or a different density of hue from that of the pressure-receiving member.

[0017] According to this configuration, the cable holding member and the pressure receiving member are clearly distinguished from each other by their colors.

[0018] In the above aspect, the cable holding member is preferably formed by joining the outer edges of two flexible sheet-like members (41, 42) together, into a substantially flat bag shape capable of accommodating the cable.

[0019] According to this configuration, the structure of the cable holding member is simple, and the productivity of the cable holding member is excellent.

[0020] In the above aspect, preferably, the two sheet-like members have a nonwoven fabric (41) and a resin film (42), and the outer edges of the nonwoven fabric and the film are welded to each other.

[0021] According to this configuration, the cable support member has a required bending rigidity and is provided with an appropriate degree of flexibility that makes the cable support member easy to handle.

[0022] In the above aspect, the nonwoven fabric and the film are preferably welded together at the edge of the second opening.

[0023] According to this configuration, the edge of the second opening is reinforced.

[0024] In the above aspect, the film preferably transmits visible light.

[0025] According to this aspect, the arrangement of the cables in the cable support member can be visually confirmed from the outside.

[0026] In recent years, vehicle seats have become more multifunctional to improve safety and relaxation, which has led to an increase in the number of electrical devices provided in vehicle seats and the wiring for the electrical devices in vehicle seats.

[0027] An object of the present invention is to provide a vehicle seat that can easily accommodate an increase in electrical devices and wiring in the vehicle seat.

[0028] In order to solve the above-mentioned problems, one aspect of the present invention is a vehicle seat (1), comprising a frame (10, 60), a pressure-receiving member (11, 61) supported by the frame and supporting an occupant, an electrical device (20, 26, 70) provided on the pressure-receiving member, and a sheet-like cable holding member (40, 80) provided on the pressure-receiving member and holding a cable (45, 71) connected to the electrical device, wherein the pressure-receiving member has a support wire (17, 63) attached to the frame and a pressure-receiving plate (16, 62) supported by the support wire, the cable holding member being provided on one side of the pressure-receiving plate, and the electrical device being attached to the other side of the pressure-receiving plate and including a portion overlapping with the electrical device.

[0029] This configuration increases the effective area over which the cable holding member holds the cable.

[0030] In the above aspect, the electrical device may preferably be a seating sensor (20).

[0031] According to this configuration, the effective area in which the cable holding member holds the cable is increased in the portion corresponding to the area where the seating sensor is disposed.

[0032] In the above aspect, preferably, the cable held by the cable holding member includes a portion that overlaps the electrical device with the pressure-receiving plate in between.

[0033] This configuration allows for a high degree of freedom in arranging the cables in the cable holding member.

[0034] In the above aspect, preferably, the cable held by the cable holding member does not include a portion where the cable overlaps the electrical device with the pressure receiving plate in between.

[0035] This configuration improves the integrity of the cable in the cable holding member.

[0036] In the above aspect, the cable holding member preferably has a fixing portion (46) for fixing to the pressure-receiving member in an area outside the area corresponding to the electrical device.

[0037] With this configuration, the fixing portion for the pressure-receiving member does not interfere with the electrical device.

[0038] In the above aspect, the cable holding member preferably has a different hue or a different density of hue from that of the seating sensor.

[0039] According to this configuration, the cable holding member and the seating sensor are clearly distinguished from each other by their colors.

[0040] In the above aspect, the cable holding member is preferably formed by joining the outer edges of two flexible sheet-like members (41, 42, 81, 82) together, into a substantially flat bag shape capable of accommodating the cable.

[0041] According to this configuration, the structure of the cable holding member is simple, and the productivity of the cable holding member is excellent.

[0042] In the above aspect, preferably, the two sheet-like members have a nonwoven fabric (41, 81) and a resin film (42, 82), and the outer edges of the nonwoven fabric and the outer edges of the film are welded to each other.

[0043] According to this configuration, the cable support member has a required bending rigidity and is provided with an appropriate degree of flexibility that makes the cable support member easy to handle.

[0044] In the above aspect, the nonwoven fabric and the film are preferably welded together at the edge of the second opening.

[0045] According to this configuration, the edge of the second opening is reinforced.

[0046] In the above aspect, the film preferably transmits visible light.

[0047] According to this aspect, the arrangement of the cables in the cable support member can be visually confirmed from the outside.

[0048] In recent years, vehicle seats have become more multifunctional to improve safety and relaxation. Accordingly, various electrical devices are provided in the seat cushion and seat back of the vehicle seat, and wiring for these electrical devices is sometimes routed across the seat cushion and seat back.

[0049] The problem to be solved by the present invention is to provide a vehicle seat that can easily accommodate wiring for electrical devices installed in the vehicle seat that spans the seat cushion and the seat back.

[0050] In order to solve the above-mentioned problems, one aspect of the present invention is a vehicle seat including a seat cushion frame (10), a seat cushion pressure-receiving member (11) supported by the seat cushion frame and supporting a seated occupant, a seat back frame (60) connected to the seat cushion frame, a seat back pressure-receiving member (61) supported by the seat back frame and supporting the seated occupant, electrical devices (20, 26, 70) provided on the seat cushion pressure-receiving member and the seat back pressure-receiving member, and a cable holding gap (44) provided on the seat cushion pressure-receiving member and holding a cable (45) connected to the electrical device. The seat cushion side cable holding member (40) has a cylindrical shape, a seat back side cable holding member (80) that is provided on the seat back pressure receiving member and includes a cable holding gap (84) that holds a cable (71) connected to the electrical device, and a connecting portion cable holding member (90) that connects the seat cushion side cable holding member and the seat cushion side cable holding member to each other and includes a cable holding gap (94) that holds the cable, and the cable holding gap of the seat cushion side cable holding member, the cable holding gap of the seat back side cable holding member, and the cable holding gap of the connecting portion cable holding member are connected to each other.

[0051] According to this configuration, wiring for electrical devices provided in the vehicle seat can be easily routed across the seat cushion and the seat back.

[0052] In the above aspect, the connecting portion cable holding member is preferably flexible.

[0053] According to this configuration, the connecting portion cable holding member is easily deformed in response to the tilting of the seat back relative to the seat cushion, and a large load is not applied to the connecting portion cable holding member.

[0054] In the above aspect, preferably, the connector cable holding member has an opening (95).

[0055] According to this configuration, the flexibility of the connecting portion cable holding member is adjusted, and a large load is not applied to the connecting portion cable holding member when the seat back tilts relative to the seat cushion.

[0056] In the above aspect, preferably, the connecting portion cable holding member has slack between the seat cushion side cable holding member and the seat back side cable holding member.

[0057] With this configuration, no tension is applied to the connecting portion cable holding member when the seat back tilts relative to the seat cushion.

[0058] In the above aspect, preferably, the connecting portion cable holding member is integral with the seatback side cable holding member and the seat cushion side cable holding member.

[0059] This configuration reduces the number of parts in the cable holding member.

[0060] In the above aspect, preferably, the seatback side cable holding member, the seat cushion side cable holding member and the connecting portion cable holding member are formed by joining the outer edges of two flexible sheet-like members (41, 42, 81, 82, 91, 92) to each other, and are formed into a substantially flat bag shape capable of accommodating the cables.

[0061] According to this configuration, the structure of each cable holding member is simple, and the productivity of the cable holding members is excellent.

[0062] In the above aspect, preferably, the two sheet-like members have a nonwoven fabric (41, 81, 91) and a resin film (42, 82, 92), and the outer edges of the nonwoven fabric and the outer edges of the film are welded to each other.

[0063] According to this configuration, the cable support member has a required bending rigidity and is provided with an appropriate degree of flexibility that makes the cable support member easy to handle.

[0064] In the above aspect, the nonwoven fabric and the film are preferably welded together at the edge of the second opening.

[0065] According to this configuration, the edge of the second opening is reinforced.

[0066] In the above aspect, the film preferably transmits visible light.

[0067] According to this aspect, the arrangement of the cables in the cable support member can be visually confirmed from the outside. [Effects of the Invention]

[0068] In order to solve the above problem, one aspect of the present invention is a vehicle seat (1) comprising a frame (10), a pressure-receiving member (11) supported by the frame and supporting an occupant, an electrical device (26) provided on the pressure-receiving member, and a sheet-like cable holding member (40) provided on the pressure-receiving member and holding a cable (45) connected to the electrical device, wherein the electrical device includes a portion (27A) facing a first opening (28) formed in the pressure-receiving member, and the cable holding member has a second opening (47) including a portion overlapping the first opening.

[0069] This configuration allows for a high degree of freedom in the placement and wiring of the electrical devices, and the cable holding member does not block the first opening and does not impede the function of the first opening.

[0070] In the above aspect, preferably, the electrical device is an electric fan unit (26) including an air duct (27), the air duct having an air outlet (27A) opening toward the pressure-receiving member, and the air outlet including a portion facing the first opening.

[0071] With this configuration, the air blowing out from the air outlet is not hindered by the pressure-receiving member and the cable holding member.

[0072] In the above aspect, the cable holding member preferably has at least one fixing portion (46) near the outer edge of the second opening for fixing the cable holding member to the pressure-receiving member.

[0073] According to this configuration, the outer peripheral edge of the second opening of the cable holding member is prevented from being separated from the pressure-receiving member.

[0074] In the above aspect, the cable holding member preferably has a third opening (48) at a position corresponding to the mounting portion of the electrical device relative to the pressure-receiving member.

[0075] With this configuration, the cable holding member does not interfere with the mounting portion of the electrical device.

[0076] In the above aspect, the cable holding member preferably has a different hue or a different density of hue from that of the pressure-receiving member.

[0077] According to this configuration, the cable holding member and the pressure receiving member are distinguished from each other by their colors.

[0078] In the above aspect, the cable holding member is preferably formed by joining the outer edges of two flexible sheet-like members (41, 42) together, into a substantially flat bag shape capable of accommodating the cable.

[0079] According to this configuration, the structure of the cable holding member is simple, and the productivity of the cable holding member is excellent.

[0080] In the above aspect, preferably, the two sheet-like members have nonwoven fabrics (41, 81) and a resin film (42), and the outer edges of the nonwoven fabrics and the outer edges of the film are welded to each other.

[0081] According to this configuration, the cable support member has a required bending rigidity and is provided with an appropriate degree of flexibility that makes the cable support member easy to handle.

[0082] In the above aspect, the nonwoven fabric and the film are preferably welded together at the edge of the second opening.

[0083] According to this configuration, the edge of the second opening is reinforced.

[0084] In the above aspect, the film preferably transmits visible light.

[0085] According to this aspect, the arrangement of the cables in the cable support member can be visually confirmed from the outside. [Brief explanation of the drawings]

[0086] [Figure 1] FIG. 1 is a perspective view of a vehicle seat according to a first embodiment, seen from above; [Figure 2] FIG. 1 is a perspective view showing a frame structure of a vehicle seat according to a first embodiment, as viewed from above; [Figure 3] FIG. 1 is an exploded perspective view showing a skeletal structure of a seat cushion of a vehicle seat according to a first embodiment, as viewed from above; [Figure 4] FIG. 1 is a plan view of a main part including a pressure-receiving member of a seat cushion of a vehicle seat according to a first embodiment; [Figure 5] FIG. 1 is a perspective view of a main part of a seat cushion of a vehicle seat according to a first embodiment, viewed from below; [Figure 6] 1 is a cross-sectional view of a seat cushion-side cable holding member used in a vehicle seat according to a first embodiment; FIG. [Figure 7] 1 is a cross-sectional view of a seatback-side cable holding member used in a vehicle seat according to a first embodiment; [Figure 8] FIG. 10 is a perspective view of a vehicle seat according to a second embodiment, seen from above; [Figure 9] FIG. 10 is a longitudinal cross-sectional view of a vehicle seat according to a second embodiment; [Figure 10] 10 is a cross-sectional view of a connecting cable holding member used in a vehicle seat according to a second embodiment; [Figure 11]FIG. 10 is a perspective view showing a modified example of a connecting portion cable holding member used in the vehicle seat according to the second embodiment; DETAILED DESCRIPTION OF THE INVENTION

[0087] The vehicle seat according to the present invention will be described below with reference to the drawings. In the following description, the left-right direction is defined based on the position of an occupant seated in the vehicle seat. The up-down direction is defined as the direction along the vertical direction. The front-rear direction is defined as the direction perpendicular to the vertical direction and the left-right direction.

[0088] First Embodiment 1 to 6 show a vehicle seat 1 according to a first embodiment.

[0089] As shown in Figure 1, the vehicle seat 1 of the first embodiment has a seat cushion 2 provided on the floor F of the automobile, a seat back 3 extending upward from the rear of the seat cushion 2, and a headrest 4 provided on the upper part of the seat back 3.

[0090] The seat cushion 2 includes a pad member 5 made of urethane foam or the like. The pad member 5 is covered with a surface 5A and has a seating surface 6 that faces substantially upward. The seat cushion 2 supports the buttocks of an occupant seated on the seating surface 6 from below. The seat back 3 includes a pad member 7 made of urethane foam or the like. The pad member 7 is covered with a surface 7A and has a backrest surface 8 that faces substantially forward. The seat back 3 supports the back of the occupant leaning against the backrest surface 8 from behind.

[0091] As shown in FIGS. 2 and 3, the seat cushion 2 includes a seat cushion frame 10 that forms the framework of the seat cushion 2, and a seat cushion pressure-receiving member 11 attached to the seat cushion frame 10.

[0092] The seat cushion frame 10 includes left and right cushion side members 12 extending parallel to each other in the front-to-rear direction, a front cross member 13 connecting front portions 12A of the left and right cushion side members 12 to each other, and a rear cross member 14 connecting rear portions 12B of the left and right cushion side members 12 to each other. Each cushion side member 12 is formed by pressing steel plate and has a generally U-shaped cross section. The front cross member 13 and rear cross member 14 are each formed by a straight metal round pipe.

[0093] The seat cushion frame 10 further includes a front pan 15 that connects the front portions of the left and right cushion side members 12 to each other. The front pan 15 is a press-formed product made of steel plate, and forms the front portion of the seat cushion frame 10.

[0094] As shown in Fig. 2, left and right slide rails 30 extending in the front-rear direction are attached to the floor F. A slider 31 is provided on each of the left and right slide rails 30 so as to be movable in the front-rear direction. The left and right sliders 31 are connected to the corresponding cushion side members 12 by a front link member 32 and a rear link member 33.

[0095] The slider 31 is fixed to any desired position in the front-rear direction on the slide rail 30 by a known latch mechanism or the like (not shown). Alternatively, the slider 31 is driven to any desired position in the front-rear direction on the slide rail 30 by a known electric mechanism and fixed thereto. These mechanisms allow the position of the vehicle seat 1 on the floor F to be changed in the front-rear direction.

[0096] The front link member 32 and the rear link member 33 constitute a height mechanism that displaces the seat cushion frame 10 in the up and down direction relative to the slider 31 .

[0097] The seat cushion pressure-receiving member 11 is a member that is disposed between the left and right cushion side members 12 and receives the weight of a seated occupant. As shown in Figures 3 and 4, the seat cushion pressure-receiving member 11 includes a pressure-receiving plate 16 made of a resin molded product and a plurality of metal support wires 17 (four in the illustrated embodiment) that constitute support members for the pressure-receiving plate 16.

[0098] The pressure plate 16 has a substantially flat rectangular main portion 16A, left and right side extension portions 16B extending outward from the left and right side edges of the main portion 16A, and a rear extension portion 16C extending rearward from the rear edge of the main portion 16A.

[0099] The support wires 17 are spaced apart from one another in the left-right direction and extend parallel to one another in the front-rear direction along the undersides of the main portion 16A and rear extension portion 16C of the pressure plate 16. Each support wire 17 has a front hook portion 17A with an arc shape at its front end, which extends forward beyond the front edge of the main portion 16A. Each support wire 17 has a rear hook portion 17B with an arc shape at its rear end, which extends rearward beyond the rear edge of the rear extension portion 16C.

[0100] The front hook portion 17A of each support wire 17 is hooked onto the front cross member 13. The rear hook portion 17B of each support wire 17 is hooked onto the rear cross member 14. As a result, each support wire 17 supports the pressure plate 16 with elasticity in the vertical direction from the seat cushion frame 10. In other words, the seat cushion frame 10 is supported by the multiple support wires 17 with elasticity in the vertical direction from the seat cushion frame 10.

[0101] The pressure plate 16 has a front semi-cylindrical portion 16D connected to the front edge of the main portion 16A. The front semi-cylindrical portion 16D, together with the front hook portion 17A, engages with the front cross member 13. The pressure plate 16 has a linear portion 16E that extends rearward from the rear extension portion 16C along the support wire 17, and a rear semi-cylindrical portion 16F that curves from the tip of the linear portion 16E along the rear hook portion 17B. The rear semi-cylindrical portion 16F, together with the rear hook portion 17B, engages with the rear cross member 14.

[0102] The pressure plate 16 and the support wire 17 may be joined to each other by adhesion, welding, etc. Alternatively, the pressure plate 16 may be molded by insert molding including the support wire 17.

[0103] On the upper surface of the main portion 16A of the pressure receiving plate 16, a seating sensor 20 (occupant detection sensor) is attached as an electrical device.

[0104] 5, two screw fastening projections 18 are formed on the left and right sides of the underside of the main portion 16A of the pressure receiving plate 16 along the front edge of the main portion 16A. A device mounting plate 22 is attached to the screw fastening projections 18 with screws 21. Screw fastening projections 23, 25 are formed at one location on the underside of the main portion 16A of the pressure receiving plate 16 near the front edge and at two locations on the left and right sides of the underside of the device mounting plate 22 near the front edge.

[0105] A housing 26A of an electric fan unit 26 is attached to the pressure plate 16 in a suspended manner using screws 24 on the screw fastening projections 23 and 25. A cylindrical fan 26B and an electric motor 26C that rotates and drives the fan 26B are provided in the housing 26A. The electric fan unit 26 has an air duct 27 connected to the housing 26A. The air duct 27 is hook-shaped and bent upward, and has an air outlet 27A that opens upward, i.e., toward the main portion 16A of the pressure plate 16.

[0106] The electric fan devices 26 connected to the air ducts 27 are provided on the left and right sides of the main portion 16A of the pressure plate 16, as shown in FIGS.

[0107] First openings 28 are formed in the main portion 16A of the pressure-receiving plate 16, including positions that correspond vertically to (overlap with) the air outlets 27A of the left and right air ducts 27. In other words, the air outlets 27A include portions that face the first openings 28, which are positioned higher than the air outlets 27A.

[0108] A seat cushion side cable holding member 40 is detachably attached to the underside of the pressure plate 16 by a plurality of attachments 46 (fixing portions) such as clips. The seat cushion side cable holding member 40 is configured in a sheet shape and extends along the underside of the pressure plate 16. The seat cushion side cable holding member 40 holds electric wires (cables) 45 (see FIG. 6) connected to electrical devices such as the seating sensor 20 and the electric fan unit 26.

[0109] The fixing portions of the seat cushion side cable holding member 40 to the pressure receiving plate 16 by the mounting fixtures 46 are all provided outside the area where the seating sensors 20 are arranged. This prevents the fixing portions of the seat cushion side cable holding member 40 from interfering with the seating sensors 20.

[0110] As shown in Fig. 6, the seat cushion side cable holding member 40 includes two flexible sheet-like members 41, 42 stacked on top of each other. The sheet-like members 41, 42 are welded (bonded) to each other by a welding portion 43 around the entire outer edge. As a result, the seat cushion side cable holding member 40 is formed in a flat bag shape, and a cable holding gap 44 (cable holding space) is defined between the sheet-like members 41, 42. This seat cushion side cable holding member 40 has a simple structure and is highly manufacturable.

[0111] The sheet-like member 41 is made of nonwoven fabric. The sheet-like member 42 is a resin film. Hereinafter, one sheet-like member 41 may be referred to as the nonwoven fabric 41, and the other sheet-like member 42 may be referred to as the transparent film 42. The transparent film 42 is made of a transparent resin such as polyvinyl chloride (PVC) that is transmissive to visible light. Due to its material composition, the seat cushion side cable holding member 40 has the required bending rigidity and appropriate flexibility for easy handling.

[0112] The seat cushion side cable holding member 40 has the nonwoven fabric 41 disposed on the lower surface side of the pressure receiving plate 16. The transparent film 42 is disposed below the nonwoven fabric 41.

[0113] The seat cushion side cable holding member 40 has an outer edge that roughly follows the outer edge of the pressure receiving plate 16. As a result, the cable holding gap 44 extends in a planar manner over almost the entire pressure receiving plate 16 with a large area (volume).

[0114] The seat cushion side cable holding member 40 has a plurality of electric wires 45 placed in the cable holding gap 44, and holds each electric wire 45 by sandwiching it between the nonwoven fabric 41 and the transparent film 42. The seat cushion side cable holding member 40 holds the plurality of electric wires 45 housed in the cable holding gap 44 simply by sandwiching it between the nonwoven fabric 41 and the transparent film 42, and does not restrict the arrangement position of each electric wire 45.

[0115] This allows the position of each electric wire 45 held by the seat cushion-side cable holding member 40 to be easily changed on the surfaces of the nonwoven fabric 41 and the transparent film 42. Also, the electric wires 45 housed in the cable holding space 44 can be easily added, removed, or removed.

[0116] For these reasons, the seat cushion side cable holding member 40 has a simple structure and is flexible, so that it has excellent versatility in holding the electric wires 45.

[0117] The cable holding gap 44 extends in a planar manner over substantially the entire pressure-receiving plate 16 with a large area (volume), following the seat cushion side cable holding member 40 which extends in a planar manner over substantially the entire pressure-receiving plate 16. This allows for a high degree of freedom in setting and changing the number and wiring pattern of the electric wires 45 in the seat cushion side cable holding member 40.

[0118] The seat cushion side cable holding member 40 includes a portion that overlaps with the seating sensor 20 across the pressure receiving plate 16. In other words, the seat cushion side cable holding member 40 does not have an opening in the portion that overlaps with the seating sensor 20 across the pressure receiving plate 16. This allows the cable holding gap 44 of the seat cushion side cable holding member 40 to extend to the area corresponding to the seating sensor 20, further increasing the degree of freedom in the number of wirings and arrangement pattern of the electric wires 45 in the seat cushion side cable holding member 40.

[0119] 4, the electric wires 45 held by the seat cushion side cable holding member 40 may or may not include a portion that overlaps with the seating sensor 20 across the pressure receiving plate 16. This further increases the degree of freedom in the arrangement pattern of the electric wires 45 held by the seat cushion side cable holding member 40.

[0120] Since the electric wire 45 held by the seat cushion side cable holding member 40 includes a portion that overlaps with the seating sensor 20 across the pressure receiving plate 16, the degree of freedom in arranging the electric wire 45 in the seat cushion side cable holding member 40 is increased.

[0121] Since the electric wire 45 held by the seat cushion side cable holding member 40 does not include a portion that overlaps with the seating sensor 20 across the pressure receiving plate 16, the integrity of the electric wire 45 in the seat cushion side cable holding member 40 is improved.

[0122] The seat cushion side cable holding member 40 has the transparent film 42 disposed below the nonwoven fabric 41 on the underside of the pressure-receiving plate 16. This allows an operator to easily see the state of the electric wires 45 in the cable holding gap 44 and the arrangement of the electric wires 45 from the underside of the seat cushion side cable holding member 40 through the transparent film 42.

[0123] The nonwoven fabric 41 is colored in a different hue or a different density from the pressure receiving plate 16 and the seat occupancy sensor 20. This allows the pressure receiving plate 16 and the seat cushion side cable holding member 40 to be clearly distinguished by hue even if they have similar shapes. As a result, even if the pressure receiving plate 16 and the seat cushion side cable holding member 40 have approximately the same shape, they are clearly distinguished, preventing incorrect assembly and improving assembly workability. In addition, the nonwoven fabric 41 and the seat occupancy sensor 20 are clearly distinguished by hue.

[0124] The seat cushion side cable holding member 40 extends between the pressure receiving plate 16 and the air outlet 27A and along the underside of the pressure receiving plate 16. As shown in FIGS. 3 to 5, the seat cushion side cable holding member 40 has a second opening 47 including a portion that overlaps with the air outlet 27A of each electric fan unit 26. The second opening 47 includes a portion that overlaps with the first opening 28 on the upper side and a portion that overlaps with the air outlet 27A on the lower side.

[0125] This prevents the seat cushion side cable holding member 40 from interfering with the air blown out from the electric fan device 26, and prevents the seat cushion side cable holding member 40 from obstructing the flow of air blown out from the air outlet 27A.

[0126] 4, the fixing portion of the seat cushion side cable holding member 40 to the pressure receiving plate 16 using the mounting fixture 46 is also provided on the outer circumferential edge of the second opening 47. This prevents the outer circumferential edge of the second opening 47 of the seat cushion side cable holding member 40 from hanging down away from the pressure receiving plate 16. This makes it possible to firmly attach the seat cushion side cable holding member 40 to the pressure receiving plate 16.

[0127] The nonwoven fabric 41 and the transparent film 42 are welded to each other at the welding portion 47A at the outer edge of the second opening 47. This reinforces the periphery of the second opening 47 of the seat cushion side cable holding member 40 and prevents the electric wires 45 from protruding out of the second opening 47.

[0128] 5, the seat cushion side cable holding member 40 has third openings 48 at positions corresponding to the screw fastening protrusions 18, 23. By allowing the screws 21, 24 to pass through the third openings 48, interference between the seat cushion side cable holding member 40 and the screws 21, 24 is avoided.

[0129] The second opening 47 and the third opening 48 of the seat cushion side cable holding member 40 can be easily formed using a punch press, a blade, or the like. The formation of the second opening 47 and the third opening 48 prevents the seat cushion side cable holding member 40 from interfering with the electric fan unit 26. This reduces the restriction imposed by the seat cushion side cable holding member 40 on the arrangement of electrical devices provided in the seat cushion 2, such as the electric fan unit 26, and increases the degree of freedom in the arrangement of electrical devices, such as the electric fan unit 26, in the seat cushion 2.

[0130] 2, the seat back 3 has a seat back frame 60 and a seat back pressure-receiving member 61 attached to the seat back frame 60. The seat back pressure-receiving member 61 supports a pad member 7 (see FIG. 1).

[0131] The seatback frame 60 has left and right seatback side members 64 extending in the vertical direction, a connecting member 65 that connects the upper parts of the left and right seatback side members 64 to each other, and a lower member 66 made of steel plate that connects the lower parts of the left and right seatback side members 64 to each other. Each seatback side member 64 is made of a press-formed steel plate and has a substantially U-shaped cross section.

[0132] The connecting member 65 is a bent metal round pipe, and has left and right side portions 65A that extend substantially vertically and whose lower portions are joined to the upper portions of the corresponding seatback side members 64, and an upper portion 65B that extends horizontally and joins the upper ends of the left and right side portions 65A to each other, forming a substantially staple shape (a substantially upside-down U-shape). Two cylindrical left and right headrest stays 67 for attaching the headrest 4 (see FIG. 1) to the seatback 3 are joined to the upper portion 65B.

[0133] The seat back frame 60 further includes an upper member 68 made of steel plate that connects the left and right side portions 65A of the connecting member 65. The upper member 68 is made of a press-molded steel plate.

[0134] The seatback frame 60 has lower portions of the left and right seatback side members 64 connected to rear portions of the left and right cushion side members 12 by reclining devices 75 and connecting rods 76 of the reclining devices 75 so as to be able to tilt.

[0135] The seatback pressure-receiving member 61 is a member that is arranged between the left and right seatback side members 64 and receives the weight of the seated occupant, and includes a pressure-receiving plate 62 made of a resin molded product and a metal support wire 63 that forms a support member for the pressure-receiving plate 62.

[0136] The pressure plate 62 has a substantially rectangular main portion 62A with multiple openings, and multiple upper and lower side extensions 62B that extend outward to the left and right from the left and right edges of the main portion 62A. The pad member 7 (see FIG. 1) of the seat back 3 is attached to the front surface of the main portion 62A.

[0137] The support wire 63 is formed in a substantially U-shape, and has its upper end secured to an upper member 68 and its lower end secured to a lower member 66 by a clip 69 .

[0138] The support wires 63 support the pressure plate 62 with elasticity in the front-rear direction from the seat back frame 60. In other words, the pressure plate 62 is supported by the support wires 63 with elasticity in the front-rear direction from the seat back frame 60.

[0139] The pressure plate 62 and the support wire 63 may be joined to each other by adhesion, welding, etc. Alternatively, the pressure plate 62 may be molded by insert molding including the support wire 63.

[0140] An electrical device 70 such as an electric air pressure regulating valve or an electromagnetic switching valve for an air pressure device (not shown) that changes the shape of the pad member 7 (see Figure 1) of the seat back 3 in accordance with the body shape of the seated person is attached to the main part 62A of the pressure plate 62.

[0141] A rectangular seatback side cable holding member 80 that supports the electric wires 71 (see Figure 6) of the electrical device 70 is removably attached to the back surface (rear surface) of the main portion 62A of the pressure plate 62 using multiple mounting fixtures 86 such as clips.

[0142] The seatback-side cable retaining member 80 has the same structure as the seat cushion-side cable retaining member 40, and as shown in Fig. 6, includes two flexible sheet-like members, namely, a nonwoven fabric 81 and a transparent film 82. The nonwoven fabric 81 and the transparent film 82 are welded (bonded) to each other around the entire outer edge by a welding portion 83. As a result, the seatback-side cable retaining member 80 is formed in a flat bag shape, and a cable retaining gap 84 is defined between the nonwoven fabric 81 and the transparent film 82.

[0143] The seatback side cable holding member 80 has a plurality of electric wires 71 placed in a cable holding gap 84, and holds each electric wire 71 by sandwiching it between the nonwoven fabric 81 and the transparent film 82. The seatback side cable holding member 80 holds the plurality of electric wires 71 housed in the cable holding gap 84 simply by sandwiching it between the nonwoven fabric 81 and the transparent film 82, and therefore does not restrict the arrangement position of each electric wire 71.

[0144] This allows the position of each electric wire 71 held by the seatback-side cable holding member 80 to be easily changed on the surfaces of the nonwoven fabric 81 and the transparent film 82. Also, the electric wires 71 housed in the cable holding space 84 can be easily added, removed, or removed.

[0145] For these reasons, the seatback side cable holding member 80 has a simple structure and is flexible, providing excellent versatility in holding the electric wires 71.

[0146] In the seatback-side cable holding member 80, the transparent film 82 is disposed behind the nonwoven fabric 81 on the rear side of the pressure-receiving plate 62. This allows an operator to easily see the state of the electric wires 71 in the cable holding gap 84 and the arrangement of the electric wires 71 from the rear side of the seatback-side cable holding member 80 through the transparent film 82.

[0147] The nonwoven fabric 81 is colored in a different hue or a different density of hue from the pressure plate 62. This allows the pressure plate 62 and the seatback side cable holding member 80 to be clearly distinguished by hue even if they have similar shapes. This makes it easy to distinguish between the pressure plate 62 and the seatback side cable holding member 80 even if they have approximately the same shape, preventing incorrect assembly and improving assembly workability.

[0148] The seatback side cable holding member 80 has a fourth opening 85 at a position corresponding to the electrical device 70. This prevents the seatback side cable holding member 80 from overlapping with the electrical device 70. By providing the fourth opening 85 in the seatback side cable holding member 80, the seatback side cable holding member 80 does not hinder the degree of freedom in arranging the electrical device 70 on the pressure receiving plate 62.

[0149] The fourth opening 85 of the seatback-side cable holding member 80 can be easily formed using a punch press, a blade, or the like, and the formation of this fourth opening 85 prevents the seatback-side cable holding member 80 from interfering with the electrical device 70. This reduces restrictions imposed by the seatback-side cable holding member 80 on the arrangement of the electrical device 70 provided in the seatback 3, and increases the degree of freedom in the arrangement of the electrical device 70 in the seatback 3.

[0150] The fixing portion of the seatback side cable holding member 80 to the pressure receiving plate 62 by the mounting fixture 86 is also provided on the outer circumferential edge of the fourth opening 85. This prevents the outer circumferential edge of the fourth opening 85 of the seatback side cable holding member 80 from separating from the pressure receiving plate 62, and the attachment of the seatback side cable holding member 80 to the pressure receiving plate 62 is made stronger.

[0151] 7, the nonwoven fabric 81 and the transparent film 82 are welded to each other by a welding portion 85A at the outer edge of the fourth opening 85. This reinforces the periphery of the fourth opening 85 of the seatback-side cable holding member 80 and prevents the electric wires 71 from protruding out of the fourth opening 85.

[0152] Second Embodiment Figures 8 to 10 show a vehicle seat 1 according to a second embodiment. In Figures 8 to 10, parts corresponding to those in Figures 1 to 7 are designated by the same reference numerals as those in Figures 1 to 7, and descriptions thereof will be omitted.

[0153] The vehicle seat 1 according to the second embodiment has a connecting cable holding member 90 that connects the seat cushion side cable holding member 40 and the seat back side cable holding member 80. The seat cushion side cable holding member 40, the seat back side cable holding member 80, and the connecting cable holding member 90 have an integral structure.

[0154] The seat cushion side cable holding member 40, the seat back side cable holding member 80, and the connecting portion cable holding member 90 are integrally formed, which reduces the number of parts.

[0155] As shown in Figure 10, the connection section cable holding member 90 has a nonwoven fabric 91 and a transparent film 92 welded to each other at both side edges by welding sections 93, and defines a cable holding gap 94 between the nonwoven fabric 91 and the transparent film 92.

[0156] The cable retaining gap 94 is in communication with both the cable retaining gap 44 of the seat cushion side cable retaining member 40 and the cable retaining gap 84 of the seat back side cable retaining member 80. In other words, the cable retaining gap 94 connects the cable retaining gap 44 of the seat cushion side cable retaining member 40 and the cable retaining gap 84 of the seat back side cable retaining member 80 in communication with each other.

[0157] The cable retaining gap 94 accommodates the electric wires 45 and 71 extending from the cable retaining gap 44 of the seat cushion side cable retaining member 40 and the cable retaining gap 84 of the seat back side cable retaining member 80 .

[0158] The connecting portion cable holding member 90 is flexible, extends slackly from the rear edge of the seatback side cable holding member 80 behind the rear cross member 14 and the connecting rod 76, and is connected to the lower edge of the seatback side cable holding member 80. This prevents tension from acting on the connecting portion cable holding member 90 when the seatback 3 tilts relative to the seat cushion 2.

[0159] A fifth opening 95 (see FIG. 10) is formed in the connecting portion cable holding member 90 to adjust the flexibility of the connecting portion cable holding member 90. The nonwoven fabric 91 and the transparent film 92 are welded to each other at a welding portion 95A around the outer edge of the fifth opening 95. This reinforces the surrounding area around the fifth opening 95 of the connecting portion cable holding member 90 and prevents the electric wires 45, 71 from protruding outside through the fifth opening 95.

[0160] The electric wires 45, 71 housed in the cable holding gap 44 of the seat cushion side cable holding member 40 and the cable holding gap 84 of the seat back side cable holding member 80 can pass through the cable holding gap 94 of the connecting portion cable holding member 90 to reach one of the cable holding gaps 44, 84 or the other.

[0161] This allows for easy wiring of the electrical devices 70 and the like provided on the seat cushion 2 and the seat back 3, even when the wiring straddles the seat cushion 2 and the seat back 3. In other words, wiring of the electrical devices 70 and the like provided on the vehicle seat 1 can be easily performed across the seat cushion 2 and the seat back 3.

[0162] As shown in Figure 10, the connection cable holding member 90 may be separate from the seat cushion side cable holding member 40 and the seat back side cable holding member 80, and may be joined to the seat cushion side cable holding member 40 and the seat back side cable holding member 80 by adhesive tapes 98, 99, etc.

[0163] In this case as well, the cable retaining gap 44 of the seat cushion side cable retaining member 40, the cable retaining gap 84 of the seat back side cable retaining member 80, and the cable retaining gap 94 of the connecting portion cable retaining member 90 are in communication with one another.

[0164] Although the specific embodiment has been described above, the present invention is not limited to the above embodiment and can be widely modified and implemented.

[0165] For example, the two sheet-like members of each of the cable holding members 40, 80, and 90 may both be made of resin film or the same material. In this case, one sheet-like member may be folded so that it overlaps the other, and the outer edges may be welded together.

[0166] The electrical devices provided in the seat cushion 2 and the seat back 3 are not limited to electrical devices 70 such as a seating sensor 20, an electric fan device 26, an electric air pressure regulating valve, an electromagnetic switching valve, etc., but may also be a temperature control device, an audio device, a massage device, etc. [Explanation of symbols]

[0167] 1: Vehicle seats 10: Seat cushion frame (frame) 11: Seat cushion pressure-receiving member (pressure-receiving member) 20: Seat sensor (electrical device) 26: Electric fan device (electrical device) 26B: Fan 26C: Electric motor 27A: Air outlet 28: First opening 40: Seat cushion side cable holding member (cable holding member) 41: Sheet-like member 41: Nonwoven fabric (sheet-like member) 42: Transparent film (sheet-like member) 45: Electric wire (cable) 47: Second opening 48: Third opening

Claims

1. A vehicle seat, The frame and a pressure-receiving member supported by the frame and supporting a seated occupant; an electrical device provided on the pressure-receiving member; a sheet-like cable holding member that is provided on the pressure-receiving member and holds a cable connected to the electrical device; the electrical device includes a portion facing a first opening formed in the pressure-receiving member, The cable holding member has a second opening including a portion that overlaps the first opening.

2. the electrical device is an electric fan device including an air duct, the air duct having an air outlet opening toward the pressure-receiving member, The vehicle seat according to claim 1 , wherein the air outlet includes a portion facing the first opening.

3. 3. The vehicle seat according to claim 1, wherein the cable holding member has at least one fixing portion near an outer edge of the second opening for fixing the cable holding member to the pressure-receiving member.

4. 3. The vehicle seat according to claim 1, wherein the cable holding member has a third opening at a position corresponding to a mounting portion of the electrical device relative to the pressure-receiving member.

5. 3. The vehicle seat according to claim 1, wherein the cable holding member has a different color or a different density of color from that of the pressure-receiving member.

6. 3. The vehicle seat according to claim 1, wherein the cable holding member is formed by joining the outer edges of two flexible sheet-like members together to form a substantially flat bag-like shape capable of accommodating the cable.

7. The two sheet-like members each have a nonwoven fabric and a resin film, 7. The vehicle seat according to claim 6, wherein the outer edge of the nonwoven fabric and the outer edge of the film are welded together.

8. 8. The vehicle seat according to claim 7, wherein the nonwoven fabric and the film are welded together at the edge of the second opening.

9. 8. The vehicle seat of claim 7, wherein the film transmits visible light.

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