Vehicle seat

Abstract

To provide a vehicle seat which inhibits deterioration of sensitivity of a sensor, such as an occupant detection sensor, even if the vehicle seat includes a clip member protruding in a direction toward a cushion member.SOLUTION: A vehicle seat S includes: a seat cushion frame F; a pressure receiving member which is disposed on the seat cushion frame F and used to receive a load of an occupant; and a pad member 1a disposed on the pressure receiving member. The pressure receiving member is provided with a clip attachment part 33 to which a clip member 34 is attached. The pad member 1a includes a relief part 62a at a position facing the clip attachment part 33.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a vehicle seat equipped with a sensor, and more particularly to a vehicle seat equipped with an occupant detection sensor that detects an occupant. [Background technology]

[0002] It is known that vehicle seats such as automobiles are equipped with an occupant detection sensor that detects whether an occupant is seated. The occupant detection sensor is used to detect the presence or absence of an occupant in order to activate a seat belt reminder or an occupant restraint device. For example, Patent Document 1 describes a vehicle seat in which a plurality of seat springs as wire-like members are arranged side by side between a pan frame of a cushion frame and a connecting pipe, and an occupant detection sensor is disposed on a plate-like connecting member that connects adjacent seat springs.

[0003] In the vehicle seat described in Patent Document 1, of the multiple connecting members, those other than the one in which the occupant detection sensor is located are provided with a clip mounting portion (through hole) for fixing a clip member to which an electric wire, harness, etc. that is routed under the seat spring is attached. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2016-144985 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the technology of Patent Document 1, the underside of the cushion member presses the occupant detection sensor, turning the occupant detection sensor on. However, if the clip member protrudes upward at the clip attachment portion, when an occupant sits down and presses the cushion member downward, the clip member may push the cushion member back upward, potentially deteriorating the sensitivity of the occupant detection sensor.

[0006] The present invention has been made in consideration of the above-mentioned problems, and its object is to provide a vehicle seat in which the sensitivity of sensors such as occupant detection sensors is not deteriorated, even when the vehicle seat is equipped with a clip member that protrudes toward the cushion member. [Means for solving the problem]

[0007] The above problem is solved by the vehicle seat of the present invention, which comprises a seat frame, a pressure-receiving member arranged on the seat frame for receiving the load of an occupant, and a pad member arranged on the pressure-receiving member, wherein the pressure-receiving member is provided with a clip attachment portion to which a clip member is attached, and the pad member has a recess portion at a position opposite the clip attachment portion.

[0008] In the vehicle seat of the present invention configured as described above, the pad member has a recess at a position opposite the clip mounting portion to which the clip member is attached. Therefore, when an occupant sits down and pushes the cushion member downward, the clip member is prevented from pushing the cushion member upward, thereby making it possible to prevent a deterioration in the sensitivity of sensors such as the occupant detection sensor.

[0009] In addition, in the above configuration, the pressure-receiving member may include a plurality of wire members suspended on the seat frame and a connecting member connecting the plurality of wire members, and the clip mounting portion may be provided on the connecting member. In the above-described configuration, since the connecting member that connects the wire members is provided with the clip attachment portion, the task of attaching the clip member is facilitated.

[0010] In the above configuration, the pressure-receiving member may be entirely made of a plate-like member. In the above-described configuration, since the clip attachment portion is provided on the pressure-receiving member which is entirely made of a plate-like material, the task of attaching the clip member is simplified.

[0011] In the above configuration, the recess may be a recess provided in the pad member. With the above-described configuration, it becomes easy to form the recess in the pad member.

[0012] In the above configuration, the pad member may be made up of a plurality of portions having different hardness or density, and the recess may be disposed so as to avoid the boundaries between the plurality of portions. With the above-described configuration, it becomes easy to form the recess in the pad member which is made up of a plurality of portions having different hardness or density.

[0013] In addition, a sensor for detecting information obtained from an occupant may be provided on the pressure-receiving member, and the recess may be positioned to avoid an area of ​​the pad member facing the sensor. The above configuration prevents the pad member from pressing the sensor, which would otherwise prevent the sensor from detecting information from the occupant.

[0014] The clip attachment portion may be disposed adjacent to the sensor. With the above configuration, it is possible to prevent the sensitivity of the sensor from being deteriorated.

[0015] In addition, a sensor for detecting information obtained from an occupant is provided on the pressure-receiving member, and multiple recesses are provided, with two of the multiple recesses being positioned so as to sandwich the sensor. With the above configuration, it is possible to prevent the sensitivity of the sensor from being deteriorated.

[0016] In addition, a blower for circulating air inside the pad member is provided on the back surface of the pressure-receiving member, and a harness connected to the blower is attached to the clip member, and the blower is preferably positioned to avoid a position facing the escape portion. The above configuration prevents the harness from being bent too much due to the blower and the clip member being attached too close to each other.

[0017] In addition, an ECU is provided on the back side of the pressure-receiving member, and a harness connected to the ECU is attached to the clip member, and the ECU is preferably positioned to avoid a position facing the recess. The above configuration prevents the harness from being bent too much due to the mounting positions of the ECU and the clip member being too close to each other. Effect of the Invention

[0018] According to the vehicle seat of the present invention, the pad member has a recess at a position opposite the clip mounting portion to which the clip member is attached. Therefore, when an occupant sits down and pushes the cushion member downward, the clip member is prevented from pushing the cushion member upward, thereby preventing a deterioration in the sensitivity of sensors such as the occupant detection sensor. Furthermore, according to the vehicle seat of the present invention, the connecting member that connects the wire members is provided with a clip attachment portion, which makes it easy to attach the clip member. Furthermore, according to the vehicle seat of the present invention, the clip attachment portion is provided on the pressure-receiving member which is entirely made of a plate-like member, so that the task of attaching the clip member is simplified. Furthermore, according to the vehicle seat of the present invention, it becomes easy to form the relief portion in the pad member. Furthermore, according to the vehicle seat of the present invention, it becomes easy to form the relief portion in the pad member which is constituted by a plurality of portions having different hardness or density. Furthermore, the vehicle seat of the present invention prevents the pad member from not pressing the sensor, which would otherwise prevent the sensor from detecting information from the occupant. Furthermore, according to the vehicle seat of the present invention, it is possible to suppress deterioration of the sensitivity of the sensor. Furthermore, with the vehicle seat of the present invention, it is possible to prevent the harness from being bent too much due to the blower and the clip member being attached too close to each other. Furthermore, with the vehicle seat of the present invention, the above configuration makes it possible to prevent the harness from being bent too much, which would otherwise occur if the mounting positions of the ECU and the clip member were too close to each other. [Brief description of the drawings]

[0019] [Figure 1] 1 is an external view of a vehicle seat according to a first and second embodiment of the present invention; [Diagram 2] 1 is a perspective view of a seat cushion frame included in a vehicle seat according to a first embodiment of the present invention; [Diagram 3] 1 is a top view of a seat cushion frame included in a vehicle seat according to a first embodiment of the present invention. FIG. [Figure 4] 2 is a bottom view of a seat cushion pad provided in the vehicle seat according to the first embodiment of the present invention. FIG. [Diagram 5] 5 is a cross-sectional view taken along line AA in FIG. 4. [Figure 6] FIG. 2 is a bottom view of a state in which a seat cushion pad is placed on a seat cushion frame provided in a vehicle seat relating to a first embodiment of the present invention, and is a schematic explanatory diagram showing the positional relationship between a clip member and a recess in the seat cushion pad. [Figure 7] FIG. 11 is a perspective view of a seat cushion frame included in a vehicle seat according to a second embodiment of the present invention. [Figure 8] 11 is a perspective view showing a state in which a mounting bracket to which an occupant detection sensor is attached is mounted in a recess. FIG. [Figure 9]13 is a schematic explanatory diagram showing the positional relationship between a clip member and a recess of a seat cushion pad in a state in which the seat cushion pad is placed on a seat cushion frame included in a vehicle seat according to a second embodiment of the present invention. FIG. [Figure 10] 13 is a schematic diagram showing a lower surface of a seat cushion pad according to a modified example. FIG. [Figure 11] 13 is a schematic diagram showing a lower surface of a seat cushion pad according to a modified example. FIG. [Figure 12] 13 is a schematic diagram showing a lower surface of a seat cushion pad according to a modified example. FIG. [Figure 13] 13 is a schematic diagram showing a lower surface of a seat cushion pad according to a modified example. FIG. [Figure 14] FIG. 4 is an external view of a vehicle seat according to a modified example of the first embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The configuration of a vehicle seat according to one embodiment of the present invention (hereinafter, this embodiment) will be described below with reference to the drawings. However, the embodiment described below is intended to facilitate understanding of the present invention and does not limit the present invention. In other words, the present invention can be modified and improved without departing from the spirit thereof, and the present invention naturally includes equivalents. Furthermore, in the following description, the contents regarding the materials, shapes, and sizes of the seat components are merely examples and do not limit the present invention.

[0021] In the following, a vehicle seat mounted on a vehicle will be given as an example of a vehicle seat, and an example of the configuration will be described. However, the present invention is not limited to vehicle seats mounted on vehicles that have wheels and run on the ground, such as automobiles, motorcycles, and trains, and can also be applied to seats mounted on aircraft, ships, and other vehicles that move on non-ground surfaces.

[0022] In the following description, the "seat front-rear direction" refers to the front-rear direction as seen by a person sitting in the vehicle seat, and corresponds to the direction of travel of the vehicle. The "seat width direction" refers to the width direction of the vehicle seat, and corresponds to the left-right direction as seen by a person sitting in the vehicle seat. The "up-down direction" refers to the height direction of the vehicle seat, and corresponds to the up-down direction as seen from the front of the vehicle seat.

[0023] <Configuration of the vehicle seat S> Fig. 1 shows a perspective view of a vehicle seat S according to the first and second embodiments. In Fig. 1, a part of the vehicle seat S is shown with a trim cover removed for convenience of illustration. As shown in Fig. 1, the vehicle seat S of this embodiment mainly comprises a seat cushion 1 serving as a seating portion that supports the buttocks of a seated occupant, a seat back 2 serving as a backrest portion that supports the back of the seated occupant, and a headrest 3 disposed on the upper part of the seat back 2 and supporting the head of the seated occupant.

[0024] The seat cushion 1 is a seating portion that supports an occupant from below. The seat cushion 1 is configured by placing a seat cushion pad 1a on a seat cushion frame F, which serves as a skeleton shown in Fig. 2, and covering the seat cushion pad 1a with a trim cover 1b.

[0025] The seat back 2 is a backrest portion that supports the back of an occupant from behind. The seat back 2 is configured by placing a seat back pad 2a on a seat back frame (not shown) and covering the seat back pad 2a with a trim cover 2b.

[0026] The headrest 3 is a head support portion that supports the head of an occupant from behind. The headrest 3 is configured by placing a headrest pad 3a on a headrest pillar (not shown) that serves as a core material, and covering the headrest pad 3a with a trim cover 3b.

[0027] <Seat cushion frame F according to the first embodiment> 2, the seat cushion frame F according to the first embodiment has a pair of side frames 11 arranged spaced apart on the left and right, a pan frame 12 connecting front ends of the pair of side frames 11, and a connecting pipe 13 connecting rear ends of the pair of side frames 11, which are integrally joined by welding or the like to form a frame. The side frames 11 and the pan frame 12 are formed by pressing a metal plate or the like, and the connecting pipe 13 is formed from a metal pipe.

[0028] A plurality of seat springs 20 serving as wire-like members are installed between the pan frame 12 and the connecting pipe 13 of the seat cushion frame F. Specifically, four seat springs 20A to 20D are arranged side by side in the seat width direction, and the front end of each seat spring 20 is hooked to the pan frame 12 and the rear end is hooked to the connecting pipe 13, so that the seat springs are installed in the seat front-rear direction (in other words, in the direction perpendicular to the seat width direction).

[0029] Each seat spring 20 is a spring formed by bending a metal wire in a zigzag manner from side to side. Each seat spring 20 has eight left and right extension parts 21 that extend in the seat width direction (the direction in which the seat springs 20 are arranged), seven front and rear extension parts 22 that extend in the seat front-rear direction (the direction in which the seat springs 20 are installed), and a pipe hook part 23 that is hooked to the connecting pipe 13. The left and right extension parts 21 are arranged side by side from front to back. The frontmost left and right extension part 21 is hooked to a hook part 12H formed on the pan frame 12. The front and rear extension parts 22 are arranged so as to connect the ends of the adjacent left and right extension parts 21 to each other, and are arranged alternately from left to right. The pipe hook part 23 extends upward from the end of the rearmost left and right extension part 21, and is formed so that the upper end is curved in a hook shape.

[0030] The seat spring 20 is connected by a plurality of connecting members 30A to 30F. Each connecting member 30A to 30F is made of resin and is molded integrally with the seat springs 20A to 20D by insert molding. Here, as shown in FIG. 2, the connecting member 30A arranged at the rearmost position is a member that connects the rear ends of the seat springs 20A and 20B to each other or the rear ends of the seat springs 20C and 20D to each other. More specifically, the connecting member 30A is formed so as to connect the pipe hooking portions 23 of the seat springs 20A and 20B to each other or the pipe hooking portions 23 of the seat springs 20C and 20D to each other while covering the portions of the pipe hooking portions 23 that contact the connecting pipe 13.

[0031] The connecting member 30B is a member that connects the rear ends of the seat springs 20A to 20D to each other. More specifically, the connecting member 30B is formed to connect the rearmost left and right extension parts 21 and the rear ends of the front and rear extension parts 22 of the seat springs 20A to 20D in a state where the connecting member 30B covers these parts.

[0032] The connecting member 30C is a member that connects the rear ends of the seat springs 20B and 20C to each other. The connecting members 30D arranged on the left and right of the connecting member 30C are formed to connect the rearmost front-rear extension portion 22 and the second rearmost left-right extension portion 21 of the seat spring 20A or the seat spring 20D.

[0033] The connecting member 30E is a member that connects the seat springs 20A to 20D at approximately their central portions in the front-rear direction. The connecting members 30C, 30D, and 30E are formed with through holes 33 as clip attachment portions, and clip members 34 can be attached to the through holes 33. As shown in FIG. 2, the clip members 34 protrude upward from the connecting member 30E in the seat vertical direction, and are higher than the surrounding area. In addition, electric wires, harnesses, etc. that are routed below the connecting member 30E and the seat springs 20A to 20D in the seat vertical direction can be attached to the lower part of the clip member 34.

[0034] The connecting member 30F disposed at the forefront is a member that connects the front ends of the seat springs 20B, 20C to each other. More specifically, the connecting member 30F has a substantially plate-shaped main body 31, and the main body 31 is formed to connect the second front and rear extension parts 22 of the adjacent seat springs 20B, 20C to each other. Furthermore, the main body 31 is formed to connect the second and third front left and right extension parts 21 of the seat spring 20B to each other, and to connect the second and third front left and right extension parts 21 of the seat spring 20C to each other.

[0035] The connecting member 30F has a pair of covering portions 32 arranged spaced apart on the left and right sides in front of the main body portion 31. The covering portions 32 are formed so as to cover the frontmost left and right extension portions 21 and the front-rear extension portions 22 of the seat springs 20B, 20C, and are molded integrally with the main body portion 31. Note that the frontmost left and right extension portions 21 and the front-rear extension portions 22, the second front left and right extension portions 21 and the front-rear extension portions 22, and the third front left and right extension portions 21 of the seat springs 20A, 20D are covered by a resin covering portion 30G.

[0036] The connecting member 30F is provided in the center of the seat cushion S1 in the seat width direction, and a part of the connecting member 30F is in contact with and supported by the pan frame 12. With this configuration, the seat springs 20B, 20C are in contact with and supported by the pan frame 12 via the connecting member 30F.

[0037] The connecting member 30F is provided with an occupant detection sensor 40 that is configured to detect the presence or absence of an occupant by being activated when the occupant sits down. A conventionally known general pressure sensor or the like can be used as the occupant detection sensor 40. When an occupant sits down on the vehicle seat S, a lower surface 62 of a seat cushion pad 1a (to be described later) presses an upper surface of the occupant detection sensor 40, thereby turning the occupant detection sensor 40 on.

[0038] <Seat cushion pad 1a> FIG. 4 shows a bottom view of the seat cushion pad 1a included in the vehicle seat S according to this embodiment, and FIG. 5 shows a cross-sectional view taken along line AA in FIG. 4. As shown in FIG. 4 and FIG. 5, the seat cushion pad 1a has an upper surface 61 on the seating surface side that supports an occupant, and a lower surface 62 on the opposite side to the upper surface. A recess 62a is formed on the lower surface 62 of the seat cushion pad 1a as a relief portion. More specifically, a recess 62a recessed in a direction from the lower surface 62 to the upper surface 61 is formed on the lower surface 62 of the seat cushion pad 1a. In other words, the distance between the upper surface 61 and the lower surface 62 of the recess 62a is shorter than the distance around the recess 62a.

[0039] Fig. 6 is a bottom view of the seat cushion pad 1a placed on the seat cushion frame F, and is a schematic explanatory diagram showing the positional relationship between the clip member 34 and the recess 62a of the seat cushion pad 1a. As shown in Fig. 6, the seat cushion pad 1a has the recess 62a as a clearance portion at a position facing the connecting member 30E in which the through hole 33 as the clip mounting portion is provided. Therefore, the recess 62a as a clearance portion is arranged to avoid the area of ​​the seat cushion pad 1a facing the occupant detection sensor 40.

[0040] In this manner, in the vehicle seat S according to the present embodiment, the seat cushion pad 1a is provided with a recess 62a as a relief portion at a position facing the through hole 33 to which the clip member 34 is attached. More specifically, the vehicle seat S according to the present embodiment includes the seat springs 20A-20D installed between the pan frame 12 provided in front of the seat cushion frame F and the connecting pipe 13 provided behind the seat cushion frame F, and the connecting members 30A-30F connecting the seat springs 20A-20D, and the connecting members 30C, 30D, and 30E are formed with the through hole 33 as a clip mounting portion, and the seat cushion pad 1a is provided with the recess 62a as a relief portion at a position facing the through hole 33 to which the clip member 34 is attached. In this embodiment, the connecting members 30C, 30D, and 30E and the seat springs 20A-20D constitute a pressure receiving member.

[0041] According to the above-mentioned configuration, when an occupant sits and presses the seat cushion pad 1a downward, the clip member 34 is prevented from pushing the seat cushion pad 1a upward. Therefore, when an occupant sits on the vehicle seat S, the lower surface 62 of the seat cushion pad 1a appropriately presses the upper surface of the occupant detection sensor 40, so that the sensitivity of sensors such as the occupant detection sensor 40 is prevented from being deteriorated. In addition, the through-holes 33 as clip attachment parts are provided in the connecting members 30C, 30D, and 30E that connect the seat springs 20A to 20D, so that the work of attaching the clip member 34 is easy.

[0042] Furthermore, in the vehicle seat S according to this embodiment, the recess 62a as an escape portion is positioned in the seat cushion pad 1a to avoid the area facing the occupant detection sensor 40, thereby preventing the underside 62 of the seat cushion pad 1a from pressing the occupant detection sensor 40, thereby preventing the occupant detection sensor 40 from being unable to detect information obtained from the occupant.

[0043] Furthermore, in the vehicle seat S according to this embodiment, as shown in Figures 2 and 3, the through hole 33 serving as the clip mounting portion is positioned adjacent to the occupant detection sensor 40, thereby preventing the sensitivity of the sensor from deteriorating.

[0044] <Seat cushion frame F according to the second embodiment> In the first embodiment, the seat cushion frame F of the vehicle seat S has been described as an example having a seat spring and a connecting member as a pressure-receiving member, but in the second embodiment, a seat cushion frame having a pan frame entirely made up of plate-shaped members as a pressure-receiving member will be described.

[0045] Hereinafter, a seat cushion frame according to a second embodiment of the present invention will be described with reference to Fig. 7 and Fig. 8. Only configurations different from the first embodiment will be described, and other configurations are the same as the first embodiment, so descriptions thereof will be omitted.

[0046] Fig. 7 is a perspective view of a seat cushion frame F2 according to a second embodiment. As shown in Fig. 7, the seat cushion frame F2 is mainly composed of a pair of left and right side frames 217, connecting members 218 that connect the front and rear ends of each side frame 217 (the connecting member 218 on the front end side is disposed below a pan frame 219), and a pan frame 219 that is installed between each side frame 217 and each connecting member 218.

[0047] Pan frame 219 as a pressure receiving member is entirely made of a plate-like member. A recess 220 is provided on the upper surface of pan frame 219, and occupant detection sensor 240 is disposed in recess 220. Although occupant detection sensor 240 can be directly attached to recess 220, in this embodiment, occupant detection sensor 240 is fixed to a mounting bracket 241, and mounting bracket 241 to which occupant detection sensor 240 is fixed is disposed in recess 220.

[0048] As shown in FIG. 7, the pan frame 219 is formed with a through hole 219B as a clip attachment portion around the occupant detection sensor 240, and a clip member 34 can be attached to the through hole 219B.

[0049] 7 and 8, a harness 240A is connected to the occupant detection sensor 240, which electrically connects the occupant detection sensor 240 to an external device (not shown, such as a power supply device or a device for processing a signal from the occupant detection sensor 240). An opening 219A is provided in the pan frame 219, and the harness 240A is guided to the underside of the seat cushion frame F2 by being inserted through the opening 19A. As shown in FIG. 8, the upper surface of the occupant detection sensor 240 is disposed at a position higher than the upper surface of the pan frame 219 in the surrounding area.

[0050] Fig. 9 is a schematic explanatory diagram showing the positional relationship between the clip member 34 and the recessed portion 62a of the seat cushion pad 1a when the seat cushion pad 1a is placed on the seat cushion frame F2. As shown in Fig. 9, the seat cushion pad 1a has the recessed portion 62a as a relief portion at a position facing the through hole 219B as the clip attachment portion. More specifically, the recessed portion 62a is provided at a position facing two of the four through holes 219B provided in the seat width direction.

[0051] In the vehicle seat according to the second embodiment, an occupant detection sensor 240 for detecting information obtained from an occupant is provided on a pan frame 219 serving as a pressure-receiving member, and two of the recesses 62a provided on the lower surface 62 of the seat cushion pad 1a are disposed to sandwich the occupant detection sensor 240 in the seat width direction. With this configuration, deterioration of the sensitivity of the occupant detection sensor 240 is suppressed.

[0052] <Modification> The present invention is not limited to the above-described embodiment. In the above-described embodiment, an example was shown in which a sensor such as an occupant detection sensor is provided on the seat cushion, and the pad member provided with the relief portion is the seat cushion pad, but it is also possible to provide the occupant detection sensor on the seat back, and provide the relief portion on the seat back pad.

[0053] In addition, in the above embodiment, an example was shown in which the sensor was an occupant detection sensor, but other sensors can also be used as long as they are sensors that detect information obtained from the occupant by the lower surface of the cushion member pressing the upper surface of the sensor, or sensors that detect information obtained from the occupant when the lower surface of the cushion member abuts against the upper surface of the sensor.

[0054] Next, a seat cushion pad 1Xa according to a modified example of this embodiment will be described with reference to Fig. 10 to Fig. 12. As shown in Fig. 6 and Fig. 7, the seat cushion pad 1Xa includes a front cushion region 63X and a rear cushion region 64X formed from different materials, and the boundary between the front cushion region 63X and the rear cushion region 64X is a boundary portion 65X. The front cushion region 63X is located forward of the rear cushion region 64X.

[0055] The front cushion region 63X and the rear cushion region 64X may be members made of the same raw material molded to have different properties such as hardness, density, and resilience modulus during foam molding, or may be members molded from raw materials having different properties such as hardness, density, and resilience modulus during foam molding, or may be three-dimensional mesh elastic bodies having different structures, etc. For example, the front cushion region 63X and the rear cushion region 64X may be molded from different synthetic resin raw materials such as polyurethane (PUR), polystyrene (PS), polyethylene (PE), and polypropylene (PP).

[0056] For example, the materials of the rear cushion region 64X and the front cushion region 63X may be selected so that the hardness of the rear cushion region 64X is higher than the hardness of the front cushion region 63X. In this case, for example, the rear cushion region 64X may be molded by PP (polypropylene) bead foaming, and the front cushion region 63X may be molded by polyurethane foam.

[0057] In the example shown in FIG. 10, the boundary 65X between the front cushion region 63X and the rear cushion region 64X is wavy when viewed from below the seat cushion pad 1Xa, but is not limited to this and may be formed into other curved or straight lines, or a composite shape (e.g., a folded line) consisting of a combination of two or more different curves or straight lines.

[0058] In the example shown in Fig. 10, the boundary portion 65X overlaps with the recessed portion 62Xa as a relief portion, but as shown in Fig. 11 and Fig. 12, the boundary portion 65X may be formed so as not to overlap with the recessed portion 62Xa. Also, the boundary portion 65X may or may not overlap with a sensor such as an occupant detection sensor. When the recessed portion 62Xa as a relief portion is arranged to avoid the boundary portion 65X, it becomes easy to form the recessed portion 62Xa in the seat cushion pad 1Xa composed of a plurality of portions having different hardness or density.

[0059] Furthermore, as shown in Fig. 13, the seat cushion pad 1Xa may be formed so that the hardness differs in the vertical direction of the seat. For example, the materials of the upper cushion region 66X and the lower cushion region 67X may be selected so that the hardness of the upper cushion region 66X is lower than that of the lower cushion region 67X, or the materials of the upper cushion region 66X and the lower cushion region 67X may be selected so that the hardness of the upper cushion region 66X is higher than that of the lower cushion region 67X.

[0060] 13, the recess 62Xa as the relief portion may be provided only in the lower cushion region 67X, or may be provided across both the upper cushion region 66X and the lower cushion region 67X. In the case where the hardness of the upper cushion region 66X is lower than that of the lower cushion region 67X, if the recess 62Xa is provided only in the lower cushion region 67X, the sensor will come into contact with the lower cushion region 67X having a higher hardness, and if the recess 62Xa is provided across both the upper cushion region 66X and the lower cushion region 67X, the sensor will come into contact with the upper cushion region 66X having a lower hardness.

[0061] In addition, the vehicle seat S according to the first embodiment may be configured to include a blower 300 and an EUC 301 as shown in Fig. 14. The blower 300 is provided to circulate air inside the seat cushion pad 1Ya, and the ECU 301 is connected to the blower 300 by a harness (not shown) and is provided as a control unit for controlling the blower 300. Specifically, as shown in Fig. 14, the seat cushion pad 1Ya has an air passage 302 formed inside and a plurality of air outlets 303 formed on the upper surface, and is configured to be able to blow air sent from the blower 300 into the air passage 302 toward the occupant from the air outlets 303 as shown by the arrows. The blower 300 and the EUC 301 are provided on the back surfaces of the seat spring 20 and the connecting members 30A to 30F as pressure-receiving members.

[0062] A harness (not shown) that electrically connects blower 300 and EUC 301 to another device (not shown) is connected to blower 300 and EUC 301, and the harness is attached to a lower portion of clip member 34. At this time, blower 300 and EUC 301 are attached to a seat cushion frame (not shown) in front of vehicle seat S. That is, blower 300 and EUC 301 are arranged to avoid a position facing recess 62a as a relief portion (in other words, a position facing a clip attachment portion for attaching a clip member), so that it is possible to prevent the harness from being bent too much due to the attachment positions of blower 300 and clip member 34 being too close to each other or the attachment positions of ECU 301 and clip member 34 being too close to each other.

[0063] The seat cushion pad 1Ya may be configured not to include the air passage 302 above a sensor such as an occupant detection sensor in the seat vertical direction, or may be configured to include the air passage 302 above a sensor such as an occupant detection sensor. The seat cushion pad 1Ya may be configured not to include a relief portion at a position overlapping with the air passage 302 in the seat vertical direction, or may be configured to include a relief portion at a position overlapping with the air passage 302.

[0064] Furthermore, in the vehicle seat S according to the second embodiment, as shown in FIG. 8, the occupant detection sensor 240 is fixed to a mounting bracket 241, and the mounting bracket 241 to which the occupant detection sensor 240 is fixed is arranged within the recess 220, but the mounting manner of the occupant detection sensor 240 is not limited to this.

[0065] For example, the mounting bracket 241 can be fixed to the pan frame 219 with screws. Also, the end of the mounting bracket 241 can be crimped to the pan frame 219 to lock it in place. Furthermore, the occupant detection sensor 240 may be directly attached to the pan frame 219 without using the mounting bracket 241. [Explanation of symbols]

[0066] S Vehicle seats (vehicle seats) 1 seat cushion 1a, 1Xa, 1Ya Seat cushion pad (pad material) 1b Trim cover 2 Seat back 2a Seat back pad (pad material) 2b Trim cover 3 Headrest 3a Headrest pad 3b Trim cover Seat cushion frame, front 11 Side frame 12 Pan Frame 13 Connecting pipe 20 Seat spring (pressure receiving member, wire member) 21 Left and right extension parts 22 Front and rear extensions 23 Pipe hanging part 30A~30F Connecting members (pressure-receiving members) 31 Main body 32 Covering section 33 Through hole (clip attachment part) 34 Clip member 40 Occupant detection sensor (sensor) 1a, 1Xa Seat cushion pad (pad material) 61 Top surface 62 Bottom surface 62a, 62Xa Recess (relief) 63X Front cushion area 64X Rear cushion area 65X border 66X Upper cushion area 67X Lower cushion area F2 seat cushion frame 217 Side Frame 218 Connecting member 219 Pan frame (pressure bearing member) 219A opening 219B Through hole (clip attachment part) 220 Recess 240 Occupant detection sensor 240A Harness 241 Mounting bracket 300 Blower 301 EUC 302 Ventilation 303 Ventilator

Claims

1. Seat frame and a pressure-receiving member disposed on the seat frame for receiving a load of an occupant; A pad member disposed on the pressure-receiving member, The pressure-receiving member is provided with a clip attachment portion to which a clip member is attached, The vehicle seat according to claim 1, wherein the pad member has a recess at a position opposite the clip attachment portion.

2. the pressure-receiving member includes a plurality of wire members stretched across the seat frame, and a connecting member connecting the plurality of wire members, 2. The vehicle seat according to claim 1, wherein the clip attachment portion is provided on the connecting member.

3. 2. The vehicle seat according to claim 1, wherein the pressure-receiving member is entirely made of a plate-like member.

4. 4. The vehicle seat according to claim 1, wherein the relief portion is a recess provided in the pad member.

5. The pad member is composed of a plurality of parts having different hardness or density, 5. The vehicle seat according to claim 1, wherein the recess is disposed so as to avoid boundaries between the plurality of portions.

6. a sensor for detecting information obtained from an occupant is provided on the pressure-receiving member, 6. The vehicle seat according to claim 1, wherein the recess is disposed so as to avoid an area of ​​the pad member that faces the sensor.

7. 7. The vehicle seat according to claim 6, wherein the clip attachment portion is disposed adjacent to the sensor.

8. a sensor for detecting information obtained from an occupant is provided on the pressure-receiving member, The recessed portion is provided in plurality, 5. The vehicle seat according to claim 4, wherein two of the recesses are disposed so as to sandwich the sensor therebetween.

9. A blower is provided on the back surface of the pressure-receiving member to circulate air inside the pad member, A harness connected to the blower is attached to the clip member, 9. The vehicle seat according to claim 1, wherein the blower is disposed so as to avoid a position facing the recess.

10. An ECU is provided on the back side of the pressure-receiving member, A harness connected to the ECU is attached to the clip member, 10. The vehicle seat according to claim 1, wherein the ECU is disposed so as to avoid a position facing the recess.

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