Vehicle seats

Abstract

To provide a vehicle seat in which the influence of other devices on devices placed on the seat pad is suppressed. [Solution] The vehicle seat S has a seating surface 31a that receives the load of the occupant, and a seat pad 30 having a first pad 31 with a recess 33 formed on the side opposite to the seating surface 31a, and a second pad 32 that fits into the recess 33. The second pad 32 has a first device 50 arranged on the side facing the seating surface, and a second device 56 provided on the first pad 31, and at least one of the recess 33 and the second pad 32 is positioned so as not to overlap with the second device 32 when viewed in a direction perpendicular to the seating surface 31a or from the side of the vehicle seat S.

Description

Technical Field

[0001] The present invention relates to a vehicle seat, and more particularly to a vehicle seat provided with a device disposed in a seat pad.

Background Art

[0002] Patent Document 1 discloses a structure in which an underpad (referred to as a small pad) in which a seating sensor or the like is disposed is attached to a housing space formed in a main pad (referred to as a pad body in Patent Document 1), and a harness extending from the seating sensor is drawn out from behind the cushion pad. Further, Patent Document 2 discloses a structure in which a harness from a sensor is drawn out in front of a cushion pad along the surface on the side of a seated person.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] Although Patent Document 1 and Patent Document 2 disclose that a main pad and an underpad are provided and a seating sensor or the like is disposed therebetween as described above, the influence from other devices or members disposed in the seat pad has not been sufficiently considered.

[0005] The present invention has been made in view of the above problems, and an object thereof is to provide a vehicle seat in which the influence from other devices on a device disposed in a seat pad, for example, is suppressed.

Means for Solving the Problems

[0006] The aforementioned problems are solved by the vehicle seat of the present invention, which comprises a seat pad having a seating surface that receives the load of a sitter, a first pad having a recess formed on the surface opposite to the seating surface, and a second pad that fits into the recess, and a first device disposed on the surface of the second pad that faces the seating surface, and a second device provided on the first pad, wherein at least one of the recess and the second pad is positioned so as not to overlap with the second device when viewed perpendicular to the seating surface or from the side of the vehicle seat. By positioning at least one of the recess and the second pad so as not to overlap with the second device when viewed perpendicular to the seating surface or from the side of the vehicle seat, the first device is less affected by the second device, and a decrease in the operational performance of the first device is suppressed. Therefore, it is possible to provide a vehicle seat in which the influence of other devices on the device placed on the seat pad is suppressed.

[0007] In the above configuration, the second device may be a blower device. The blower unit is a device that inevitably vibrates. By positioning at least one of the recess and the second pad so as not to overlap with the blower unit, the influence of the blower unit on the first unit is suppressed.

[0008] In the above configuration, the second device may be a vibration device. A vibrating device is a device that inevitably vibrates. By positioning at least one of the recess and the second pad so as not to overlap with the vibrating device, the influence of the vibrating device on the first device can be suppressed.

[0009] In the above configuration, the first pad has a groove formed in it, and at least one of the recess and the second pad is positioned so as not to overlap with the groove when viewed from a direction perpendicular to the seating surface. The groove is a part of the pad that is more prone to flexing than other parts. By positioning at least one of the recess and the second pad so that they do not overlap with the groove of the first pad, clearance in the positional coordinates of the first device is ensured, thereby suppressing a decrease in the performance of the first device.

[0010] In the above configuration, the groove portion is preferably a suspension groove formed on the seating surface of the first pad. Since the area where the suspension groove is formed in the first pad is prone to bending, positioning either the recess or the second pad so that it does not overlap with the suspension groove of the first pad ensures clearance in the positional coordinates of the first device, thereby suppressing a decrease in the performance of the first device.

[0011] In the above configuration, the groove portion may be a ventilation passage formed in the first pad. . Since the area where the ventilation passage is formed in the first pad is prone to bending, positioning either the recess or the second pad so that it does not overlap with the ventilation passage of the first pad ensures clearance in the positional coordinates of the first device, thereby suppressing a decrease in the performance of the first device.

[0012] In the above configuration, the first device has a main body and a tail portion including a harness extending from the main body, the tail portion being connected to the end of the main body, the tail portion having a clamping portion sandwiched between the first pad and the second pad and a non-clamping portion not sandwiched between the first pad and the second pad, the non-clamping portion being arranged outside the second pad along the outer shape of the second pad, and the tip of the non-clamping portion not extending in a direction perpendicular to the seating surface. Because the tip of the non-clamping portion does not extend perpendicular to the seating surface, the harness is prevented from hanging perpendicular to the seating surface, thus preventing the harness from becoming tangled. This improves work efficiency during seat assembly. Furthermore, the positional control of the harness can be completed within the structure of the first device.

[0013] In the above configuration, the tip of the non-clamping portion is preferably extended along the sheet width direction. Because the tip of the non-clamping portion extends along the width direction of the seat, for example, the size of the tail portion perpendicular to the seating surface is suppressed, making the first device more compact.

[0014] In the above configuration, the first device has a main body and a tail portion including a harness extending from the main body, the tail portion being connected to the end of the main body, the tail portion having a clamping portion sandwiched between the first pad and the second pad and a non-clamping portion not sandwiched between the first pad and the second pad, the non-clamping portion being positioned away from the surface of the second pad, and a space being formed between the non-clamping portion and the second pad. The formation of a space between the non-clamping portion and the second pad reduces the curvature of the non-clamping portion, resulting in a gentler curve. This helps to suppress damage to harnesses within the tail section, for example. Furthermore, it allows for the passage of other harnesses extending from other devices through the space, enabling more efficient use of the space.

[0015] In the above configuration, the first device further comprises a seat frame and a pressure-receiving member that spans the seat frame and is positioned on the opposite side of the seating surface of the first pad, wherein the first device has a main body and a tail portion including a harness extending from the main body, and the harness of the tail portion is provided such that the direction in which the harness extends from the main body is different from the direction in which the pressure-receiving member spans the seat frame. Because the direction in which the harness in the tail section extends differs from the direction in which the pressure-receiving member is stretched across the seat frame, interference between the part of the pressure-receiving member that is fixed to the seat frame and the harness is suppressed, improving workability during seat assembly. [Effects of the Invention]

[0016] The present invention provides a vehicle seat in which the influence of other devices on devices placed on the seat pad is suppressed. Furthermore, according to the present invention, the blower device is a device that inevitably vibrates. By positioning at least one of the recess and the second pad in a location that does not overlap with the blower device, the influence of the blower device on the first device is suppressed. Furthermore, according to the present invention, the vibration device is a device that inevitably vibrates. By positioning at least one of the recess and the second pad in a location that does not overlap with the vibration device, the influence of the vibration device on the first device can be suppressed. Furthermore, according to the present invention, by positioning at least one of the recess and the second pad so as not to overlap with the groove of the first pad, clearance in the positional coordinates of the first device is secured, thereby suppressing a decrease in the performance of the first device. Furthermore, according to the present invention, by positioning the recess or the second pad in a location that does not overlap with the suspension groove of the first pad, clearance in the arrangement coordinates of the device is secured, thereby suppressing a decrease in the performance of the device. Furthermore, according to the present invention, by positioning the recess or the second pad in a location that does not overlap with the ventilation passage of the first pad, clearance in the arrangement coordinates of the device is secured, thereby suppressing a decrease in the performance of the device. Furthermore, according to the present invention, since the tip of the non-clamping portion does not extend along a direction perpendicular to the seating surface, it is possible to suppress the harness from hanging down perpendicular to the seating surface and to prevent the harness from becoming tangled. This improves the workability when assembling the seat. In addition, the positional control of the harness can be completed within the structure of the first device. Further, according to the present invention, since the tip of the non-clamping portion extends along the sheet width direction, for example, the size in the direction perpendicular to the seating surface of the tail portion is suppressed, and the first device can be made more compact. Also, according to the present invention, a space is formed between the non-clamping portion and the second pad, so that the curvature of the non-clamping portion becomes smaller and it draws a gentle curve. Thereby, for example, damage to the harness inside the tail portion can be suppressed. Also, for example, another harness extending from another device can be passed through the space, and the space can be effectively utilized. Further, according to the present invention, since the direction in which the harness of the tail portion extends is different from the direction in which the pressure receiving member is bridged over the seat frame, interference between the portion where the pressure receiving member is fixed to the seat frame and the harness is suppressed, and the workability during assembly of the seat is improved.

Brief Description of the Drawings

[0017] [Figure 1] It is a perspective view of the vehicle seat according to this embodiment seen from obliquely forward. [Figure 2] It is a view showing the seat frame of the vehicle seat. [Figure 3] It is an exploded perspective view showing the configuration of the cushion pad. [[ID=二十]] [Figure 4] It is a top view of the cushion pad. [Figure 5] It is a cross-sectional view taken along the line V-V of FIG. 4. [Figure 6] It is a bottom view of the seat cushion. [Figure 7] It is a bottom view of the cushion pad in which the sensor and the blower device are arranged. [Figure 8] It is a partially enlarged perspective view showing the guide portion formed on the pressure receiving member. [Figure 9A] It is an explanatory view showing the shape of the inclined surface of the guide portion taken along the line IX-IX of FIG. 8. [Figure 9B] It is an explanatory view showing a modified example of the inclined surface of the guide portion. [Figure 9C] It is an explanatory view showing a modified example of the inclined surface of the guide portion. [Figure 9D] This is an explanatory diagram showing a modified version of the slope in the guide section. [Figure 10] This diagram shows another example of a cushion pad, an exploded perspective view taken from a downward oblique angle. [Figure 11] This is a top view showing another example of a cushion pad. [Figure 12A] This is a cross-sectional view along the line XII-XII in Figure 11. [Figure 12B] This is a cross-sectional view showing a modified example. [Figure 12C] This is a cross-sectional view showing a modified example. [Figure 12D] This is a cross-sectional view showing a modified example. [Figure 13] This is a cross-sectional view along the line XIII-XIII in Figure 1. [Modes for carrying out the invention]

[0018] The configuration of a vehicle seat according to an embodiment of the present invention (this embodiment) will be described below with reference to the drawings. However, the embodiment described below is merely an example to facilitate understanding of the present invention and does not limit the present invention. That is, the present invention can be modified and improved without departing from its spirit, and of course, equivalents thereof are included in the present invention.

[0019] In the following, we will describe an example of a vehicle seat S installed in an automobile as an example of a vehicle seat, and explain its configuration. Furthermore, in the following explanation, "seat longitudinal direction" refers to the longitudinal direction of the vehicle seat S, which coincides with the direction of travel when the vehicle is in motion. Also, "seat width direction" refers to the width direction of the vehicle seat S, which coincides with the left-right direction as viewed from the perspective of an occupant seated in the vehicle seat S. Also, "seat vertical direction" refers to the vertical direction of the vehicle seat S, which coincides with the vertical direction when the vehicle is traveling on a horizontal plane. Furthermore, the outer and inner directions are determined based on the occupant seated in the vehicle seat S. That is, the direction approaching the center in the width direction of the seat is defined as the inward direction, and the direction away from the center is defined as the outward direction.

[0020] As shown in Figure 1, the vehicle seat S is a seat placed on the floor of the vehicle where the vehicle's occupants sit. In this embodiment, the vehicle seat S is a front seat located at the front of the vehicle, but it may also be used as a rear seat located at the rear. Furthermore, the vehicle seat S can be used as a second-row middle seat or a third-row third seat in a vehicle equipped with three rows of seats in the front-to-rear direction.

[0021] Furthermore, unless otherwise specified, the shape, position, and orientation of each part of the vehicle seat S described below will be explained assuming the vehicle seat S is in its normal state.

[0022] <Vehicle Seat S> The overall configuration of the vehicle seat S according to this embodiment will be outlined with reference to Figures 1 and 2. Figure 1 is a perspective view of the vehicle seat S according to this embodiment, seen from the front at an oblique angle, and Figure 2 is a perspective view showing the seat frame F of the vehicle seat S. In Figure 1, for illustrative purposes, the upholstery Tr of a part of the vehicle seat S is removed, and the cushion pad 30 and back pad 40 are shown exposed.

[0023] As shown in Figure 1, the vehicle seat S according to this embodiment mainly comprises a seat cushion 1, a seat back 2, a headrest 3, a reclining device 5, and a slide rail device 6. In the following, the seat cushion 1, seat back 2, and headrest 3 may be collectively referred to as the seat body Sh. The seat cushion 1 and the seat back 2 are connected by a reclining device 5 sandwiched between them. The reclining device 5 allows the seat back 2 to rotate relative to the seat cushion 1, and its tilt angle can be adjusted. A headrest pillar (not shown) extends downward from headrest 3 and connects to the upper end of seatback 2.

[0024] Furthermore, a slide rail device 6 is installed beneath the vehicle seat S. The slide rail device 6 allows the vehicle seat S to be mounted on the vehicle floor in a manner that allows the seat body Sh to slide in the front-to-back direction. The slide rail device 6 consists of a lower rail 6a fixed to the floor and an upper rail 6b that can slide relative to the lower rail 6a. The seat body Sh and the upper rail 6b are connected by a link 6c, and the height of the seat body Sh can be changed by rotating the link 6c.

[0025] <Seat frame F> As shown in Figure 2, a seat frame F, which forms the skeleton of the vehicle seat S, is provided inside the vehicle seat S. The seat frame F includes a cushion frame 10 and a back frame 20.

[0026] As shown in Figure 2, the cushion frame 10 is formed in a rectangular frame shape when viewed from above the vehicle seat S, and a pair of cushion side frames 11, 11 are provided on the left and right sides. The pair of cushion side frames 11, 11 are basically symmetrical components and are provided extending in the front-rear direction of the seat.

[0027] The cushion frame 10 also includes a front connecting frame 12 that connects a pair of cushion side frames 11, 11 at the front, and a rear connecting frame 13 that connects them at the rear. Furthermore, a plate-shaped pan frame 14 is provided in front of the front connecting frame 12. The cushion frame 10 is also provided with a cushion pressure receiving member 15 that spans between the front connecting frame 12 and the rear connecting frame 13. The cushion pressure receiving member 15 makes it possible to support the seated person's buttocks from below.

[0028] As shown in Figure 2, the back frame 20 is formed in a frame shape as a whole and comprises a pair of back side frames 21, 21 arranged on the left and right sides, an upper frame 22, and a lower frame 23. The upper frame 22 is provided with a pair of headrest holders 26 through which the headrest pillars of the headrest 3 are inserted. Furthermore, the upper frame 22 is provided with a connecting frame 24 that connects the vertically extending portions. In addition, a back pressure receiving member 25 is provided, which spans between the connecting frame 24 and the lower frame 23. The back pressure receiving member 25 makes it possible to support the seated person's back from behind.

[0029] The vehicle seat S is provided with a cushion pad 30 attached to a cushion frame 10 and a back pad 40 attached to a back frame 20. The cushion pad 30 and the back pad 40 correspond to the seat pad of the present invention. Although not shown in the diagram, headrest 3 also has a headrest frame inside, and a headrest pad that attaches to the headrest frame is provided. The cushion pad 30 and the back pad 40 are made of a urethane base material formed by foam molding using, for example, urethane foam material. Furthermore, the cushion pad 30 and the back pad 40 are each covered with a surface material Tr. The surface material Tr is made of, for example, cloth, synthetic leather, or genuine leather.

[0030] As shown in Figures 1 and 2, the seat cushion 1 of the vehicle seat S in this embodiment has a sensor 50 provided on the upper side of the pressure-receiving member 15. An ECU 55 is provided below the pressure-receiving member 15, and the sensor 50 is connected to the ECU 55 via a harness. A blower device 56 is also provided on the front side of the seat cushion 1. Furthermore, the seat back 2 has a sensor 60 located in front of the pressure-receiving member 25, and an ECU 65 located behind the pressure-receiving member 25. A blower device 66 is also located on the upper side of the seat back 2. A vibration device 67 may also be located in front of the pressure-receiving member 25 on the seat back 2.

[0031] <Cushion Pad 30> The configuration of the cushion pad 30 will be explained using Figures 3 to 9D. The cushion pad 30 consists of a main pad 31 that supports the occupant's buttocks and an under pad 32 positioned below the main pad 31.

[0032] <Main Pad 31> The main pad 31 has a seating surface 31a that receives the load of the occupant. A recess 33 is formed on the lower surface 31b of the main pad 31, more specifically, on the surface opposite to the seating surface 31a. In other words, the recess 33 is formed to recess upward on the lower surface 31b of the main pad 31. The recess 33 is formed in a shape and size that can accommodate the under pad 32, and the under pad 32 can be fitted in from below upward. In this invention, the main pad 31 corresponds to the first pad, and the under pad 32 corresponds to the second pad.

[0033] As shown in Figure 7, the main pad 31 consists of a first region R1 located at the front of the seat cushion 1, a second region R2 located at the rear, and a stepped region R3 connecting the first region R1 and the second region R2. In other words, the main pad 31 is divided into a first region R1 and a second region R2 by a stepped region R3 which has a step perpendicular to the seating surface 31a. The recess 33 is formed in the second region R2 of the main pad 31. Therefore, in this embodiment, the under pad 32 fitted into the recess 33 is located in the second region R2. The recess 33 may also be formed in the first region R1, in which case the under pad 32 is located in the first region R1. The under pad 32 is located in either the first region R1 or the second region R2. The blower device 56, which will be described later, is located in the first region R1, where the under pad 32 is not located, compared to the first region R1 and the second region R2.

[0034] The underpad 32 has an upper surface 32a formed to match the planar shape of the sensor 50, which will be described later. The upper surface 32a corresponds to the surface of the main pad 31 on the seating surface 31a side. In addition, the outer side of the underpad 32 is formed to follow the side 15a of the pressure receiving member 15, as shown in Figure 5.

[0035] Below the main pad 31, a blower device 56 for cushioning is positioned to supply or draw in air. A duct 56a extending toward the rear of the seat is attached to the blower device 56. The blower device 56 is positioned in the first region R1, where the underpad 32 is not located, of the two regions R2.

[0036] Furthermore, as shown in Figure 7, a ventilation passage 34 is formed on the lower surface 31b of the main pad 31 to send air supplied from the blower device 56 to the seating surface 31a. The ventilation passage 34 is formed in the first region R1 located on the front side of the lower surface 31b of the main pad 31 and is connected to a duct 56a extending from the blower device 56. The ventilation passage 34 has a branching point 34a. The ventilation passage 34 is arranged such that the distance between the two ventilation passages 34 increases as they extend forward from the branching point 34a. In other words, the ventilation passages 34 are provided on the lower surface 31b of the main pad 31 in a V-shape. Furthermore, as shown in Figure 7, the branching point 34a of the ventilation passage 34 is positioned so as not to overlap with the underpad 32 in the front-to-rear direction of the seat when the vehicle seat S is viewed from above (top view of the seat), in other words, when viewed from a direction perpendicular to the seating surface 31a. The ventilation passage 34 corresponds to the groove portion of the present invention.

[0037] Furthermore, as shown in Figures 4 and 5, suspension grooves 35 are formed in the seating surface 31a of the main pad 31. More specifically, the seating surface 31a has two vertical suspension grooves 35a extending in the front-rear direction of the seat, and a horizontal suspension groove 35b extending in the seat width direction between the vertical suspension grooves 35a. In addition, a through hole 36 that penetrates the main pad 31 is formed in a part of the suspension grooves 35, as shown in Figure 4. The suspension grooves 35 formed in the main pad 31, like the ventilation passages 34, correspond to the groove portion of the present invention.

[0038] <Underpad 32> As described above, the underpad 32 is a component of the cushion pad 30, and the underpad 32 is formed to fit into a recess 33 formed on the lower surface 31b of the main pad 31. The underpad 32 is a component provided for assembling the sensor 50 (first device), which will be described later, to the cushion pad 30. The sensor body 51 of the sensor 50 is placed on the upper surface 32a of the underpad 32, that is, on the surface of the underpad 32 that faces the seating surface 31a. In this state, the sensor 50 can be assembled to the cushion pad 30 by fitting the underpad 32 into the recess 33. Since a bracket or the like for attaching the sensor 50 is not required, the sensor 50 can be easily assembled to the cushion pad 30.

[0039] <Sensor 50> The sensor 50 will now be described. As described above, the sensor 50 is positioned on the upper surface 32a of the underpad 32 and is attached to the cushion pad 30 by fitting the underpad 32 into the recess 33 of the main pad 31. In this embodiment, the sensor 50 is a seating sensor formed in a planar shape and consists of a pressure sensor that measures the load received from the seated person. The sensor 50 may also be a biosensor that acquires the seated person's biological information, for example, the sensor 50 may measure the seated person's respiratory rate, heart rate, etc.

[0040] The device placed on the upper surface of the underpad 32 is not limited to the sensor 50, but may be a device formed in a planar shape, such as a heater or a heating device having a Peltier element. The device placed on the upper surface 32a of the underpad 32, such as the sensor 50 and the heating device, corresponds to the first device of the present invention.

[0041] The sensor 50 consists of a sensor body 51 (main body) that measures load and a tail portion 52 extending from the end of the sensor body 51. The tail portion 52 includes a harness 53 extending from the sensor body 51, and a terminal 52d for connecting to the ECU 55 is provided at the tip 52c of the tail portion 52. By connecting the terminal 52d of the tail portion 52 to the connector 55a of the ECU 55, the sensor body 51 and the ECU 55 are electrically connected, and signals and power can be transmitted and received. The sensor body 51 consists of a pressure-sensitive element covered with shielding material, and the tail portion 52 consists of a harness 53 and urethane and shielding material (surface) that protect the harness 53.

[0042] <ecu55> As shown in Figure 5, the ECU 55 (Electronic Control Unit) is located on the underside of the seat cushion 1, more specifically, below the pressure-receiving member 15. The ECU 55 is a general-purpose ECU in terms of hardware, consisting of a CPU, ROM, RAM, etc. for calculation and control. As described above, the ECU 55 is provided with a connector 55a, and the terminal 52d provided on the tip 52c of the tail portion 52 is connected to the connector 55a. By connecting the tail portion 52 of the sensor 50 to the ECU 55, power can be supplied and signals can be transmitted and received. Furthermore, as shown in Figure 5, when the sensor 50 is assembled to the cushion pad 30, the tail portion 52 is positioned to pass through the side portion 32b of the underpad 32 and wrap around the side portion 15a of the pressure receiving member 15. This allows the sensor 50 to be connected to the ECU 55.

[0043] <Blower device 56> A blower device 56 for the cushion is provided below the cushion pad 30, more specifically below the pan frame 14. The blower device 56 is a device that generates airflow and is configured to draw in air from below the seat cushion 1 and blow it upward from the seating surface 31a of the main pad 31 through the duct 56a and the ventilation passage 34. The blower device 56 may also be configured to draw in air from the seating surface 31a of the main pad 31 and blow it downward from the seat cushion 1. The blower device 56 for the cushion corresponds to the second device of the present invention.

[0044] <Positional relationship between recess 33 and blower device 56> As shown in Figure 4, the recess 33 formed in the main pad 31 is positioned so as not to overlap with the blower device 56 when the vehicle seat S is viewed from above (hereinafter sometimes referred to as a top view of the seat). In other words, the recess 33 is positioned so as not to overlap with the blower device 56 when viewed from a direction perpendicular to the seating surface 31a of the main pad 31 (direction of arrow A in Figure 5). Furthermore, the recess 33 is positioned so as not to overlap with the blower device 56 even when the vehicle seat S is viewed from the side (hereinafter referred to as the seat side view).

[0045] Regarding the underpad 32 fitted into the recess 33, the underpad 32 may be positioned so as not to overlap with the blower device 56 when viewed from above the seat, that is, from a direction perpendicular to the seating surface 31a. Furthermore, the underpad 32 may be positioned so as not to overlap with the blower device 56 when viewed from the side of the seat.

[0046] The main pad 31 and the under pad 32 are made of a foamed urethane base material and are therefore flexible. For this reason, when placing a device such as a sensor 50 between the main pad 31 and the under pad 32, the clearance of the device's positional coordinates is often very strict. Furthermore, if disturbances such as vibrations are applied around the sensor 50, the sensor 50 may not function to its full potential. Also, a vehicle seat S may have two or more devices, and the operation of one device may affect the other, creating a disturbance. Therefore, when placing two or more devices on the seat cushion 1, it has been desirable to consider their relative positions.

[0047] The blower device 56 is a device that inevitably generates vibrations during operation. Therefore, by positioning at least one of the recess 33 and the underpad 32 in a location that does not overlap with the blower device 56 when viewed from above, it is possible to suppress the mutual influence between the operation of the blower device 56 and the sensor 50. In particular, a decrease in the operational performance of the sensor 50 is suppressed. The device placed on the seat cushion 1 is not limited to the blower device 56; it may be any other device. For example, a vibrator may be provided on the cushion pad 30 instead of the blower device 56.

[0048] In this embodiment, the underpad 32 is located in the second region R2, and the blower device 56 and ventilation passage 34 are located in the first region R1. This is just one example; the underpad 32 may also be located in the first region R1, in which case the blower device 56 and ventilation passage 34 may be located in the second region R2 where the underpad 32 is not located.

[0049] <Positional relationship between recess 33, underpad 32 and suspension groove 35> As shown in Figure 5, the recess 33 formed in the main pad 31 is positioned so as not to overlap with the suspension groove 35 when the vehicle seat S is viewed from above (hereinafter referred to as the top view of the seat). In other words, the recess 33 is positioned so as not to overlap with the vertical suspension groove 35a and the horizontal suspension groove 35b when viewed from a direction perpendicular to the seating surface 31a of the main pad 31 (direction of arrow A in Figure 5).

[0050] Furthermore, the underpad 32, which is fitted into the recess 33, is positioned so as not to overlap with the suspension groove 35 when viewed from above the seat. In other words, when viewed from a direction perpendicular to the seating surface 31a of the main pad 31 (direction of arrow A in Figure 5), the underpad 32 is positioned so as not to overlap with the vertical suspension groove 35a and the horizontal suspension groove 35b. In this embodiment, both the recess 33 and the underpad 32 are positioned so as not to overlap with the suspension groove 35. However, it is sufficient that the sensor 50 is appropriately positioned within the recess 33; that is, at least one of the recess 33 and the underpad 32 is positioned so as not to overlap with the suspension groove 35 when viewed from above the sheet. Furthermore, the sensor body 51 of the sensor 50, sandwiched between the recess 33 and the underpad 32, only needs to be positioned so that it does not overlap with the suspension groove 35 when viewed from above the seat, and the tail portion 52 may be positioned so that it overlaps with the suspension groove 35 when viewed from above the seat.

[0051] <Positional relationship between recess 33, underpad 32 and ventilation passage 34> As shown in Figure 7, the recess 33 formed in the main pad 31 is positioned so as not to overlap with the ventilation passage 34 when viewed from above the seat. In other words, the recess 33 is positioned so as not to overlap with the ventilation passage 34 when viewed from a direction perpendicular to the seating surface 31a of the main pad 31 (direction of arrow A in Figure 5). Furthermore, the underpad 32 is positioned so as not to overlap with the ventilation passage 34 when viewed from above the seat. In this embodiment, both the recess 33 and the underpad 32 are positioned so as not to overlap with the ventilation passage 34. However, it is sufficient that the sensor 50 is appropriately positioned within the recess 33, that is, that at least one of the recess 33 and the underpad 32 is positioned so as not to overlap with the ventilation passage 34 when viewed from above.

[0052] The areas where the ventilation passage 34 and suspension groove 35 are formed have a thinner thickness in the vertical direction of the sheet than the surrounding areas, making these areas prone to bending of the main pad 31. By positioning the recess 33 or under pad 32 so as not to overlap with these prone-to-bending areas, in other words, by positioning the recess 33 or under pad 32 to avoid the suspension groove 35 and ventilation passage 34, it becomes easier to secure clearance for the position coordinates of the sensor 50, thereby suppressing a decrease in the operational performance of the sensor 50.

[0053] <Shape of tail section 52> As described above, the sensor 50 consists of a sensor body 51 and a tail portion 52 extending from the end of the sensor body 51. As shown in Figure 5, the tail portion 52 has a clamping portion 52a that is clamped by the main pad 31 and the under pad 32, and a non-clamping portion 52b that is not clamped by the main pad 31 and the under pad 32.

[0054] The non-clamping portion 52b is positioned on the outside of the underpad 32, following the outer shape of the side portion 32b of the underpad 32. The tip portion 52c of the non-clamping portion 52b is configured not to point downwards toward the seat. In other words, the tip portion 52c of the non-clamping portion 52b is configured not to extend downwards in the direction perpendicular to the seating surface 31a. To put it another way, the tip portion 52c of the tail portion 52 is configured not to extend downwards in the direction in which the main pad 31 and the underpad 32 are stacked (hereinafter referred to as the stacking direction).

[0055] By configuring the tail section 52 in this way, the harness 53 inside the tail section 52 is prevented from hanging down towards the seat. As a result, the scattering of the harness 53 is suppressed, improving workability during assembly. Furthermore, by configuring the tail section 52 as described above, the positional control of the harness 53 in the tail section 52 can be completed by the structure of the sensor 50.

[0056] Furthermore, the tip 52c of the tail portion 52 (more specifically, the non-clamping portion 52b) is preferably configured to face in the sheet width direction. Specifically, it is preferable that it faces inward towards the ECU 55 in the sheet width direction. By having the tip 52c face inward in the sheet width direction, the vertical size of the tail portion 52, in other words, the height in the stacking direction, can be suppressed, and the sensor 50 can be made more compact.

[0057] As shown in Figure 5, the non-clamping portion 52b of the tail portion 52 is positioned away from the surface of the side portion 32b of the underpad 32, thereby forming a space 58. More specifically, the non-clamping portion 52b is positioned at a slight distance from the surface of the side portion 15a of the pressure receiving member 15. The space 58 formed between the tail portion 52 and the surface of the underpad 32 (more specifically, the surface of the pressure receiving member 15) allows a harness 59 extending from another device, such as a reclining device, to be placed in that space 58. By providing the space 58, the curvature of the non-clamping portion 52b becomes smaller and a gentler curve is formed, thereby suppressing damage to the harness 53 within the non-clamping portion 52b. In addition, by passing the harness 59 of another device through the space 58, the space 58 can be effectively utilized. Furthermore, damage to the harness 53 of the tail portion 52 is suppressed because the non-clamping portion 52b does not come into contact with the side of the pressure-receiving member 15.

[0058] The non-clamping portion 52b of the tail section 52 may come into contact with the surface of the side portion 15a of the pressure receiving member 15. Due to the structure, the non-clamping portion 52b and the pressure receiving member 15 may come into contact. In this case, for example, the corner portion of the pressure receiving member 15 at the point of contact may be chamfered. By chamfering, damage to the non-clamping portion 54 is suppressed. Alternatively, a cushioning material may be placed between the pressure receiving member 15 and the non-clamping portion 54. By placing a cushioning material, damage to the harness 53 of the tail section 52 is suppressed.

[0059] The sensor 50 has a configuration in which one harness 53 extends from the end of the sensor body 51, but is not limited to this. Multiple harnesses 53 may extend from the end of the sensor body 51. If multiple harnesses 53 extend, two or more tail portions 52 may be provided. Also, multiple harnesses 53 may be included in one tail portion 52. If there are two or more tail portions 52, the non-clamping portions 52b of the tail portions 52 may overlap when viewed from the direction in which the tail portions 52 extend, or they may be offset so as not to overlap.

[0060] <Information section 16> As shown in Figure 8, a guide portion 16 may be formed on the side portion 15a of the pressure receiving member 15 to guide the non-clamping portion 52b of the tail portion 52. The guide portion 16 is provided by forming a groove or recess having an inclined bottom surface 16a on the side portion 15a. The guide portion 16 acts as a guide structure that guides the non-clamping portion 52b toward the ECU 55 by positioning the non-clamping portion 52b within the groove. By providing the guide portion 16, the positioning of the non-clamping portion 52b can be easily performed during assembly. Furthermore, even after assembly, the non-clamping portion 52b is positioned within the guide portion 16, which prevents it from moving unintentionally. The guide portion 16 also serves as a storage portion capable of housing the non-clamping portion 52b.

[0061] The bottom surface 16a of the guide portion 16 may be formed to slope from the inner end to the outer end of the side portion 15a, as shown in Figure 9A. Alternatively, a bottom surface 16Aa may be formed that slopes more gently than the bottom surface 16a of the guide portion 16, as shown in the guide portion 16A in Figure 9B. Furthermore, a bottom surface 16Ba with a stepped portion may be formed, as shown in the guide portion 16B in Figure 9C. Additionally, a bottom surface 16Ca with a larger step angle α may be formed, as shown in the guide portion 16C in Figure 9D.

[0062] <Extending direction of the tail portion 52> The pressure-receiving member 15 of the seat cushion 1 of the vehicle seat S is mainly composed of a plate-shaped member and is fixed by being stretched across the front connecting frame 12 and the rear connecting frame 13 by hooks 17 (fixing parts) provided at the ends in the front-rear direction of the seat. The direction in which the pressure-receiving member 15 is stretched is the front-rear direction of the seat. On the other hand, the tail portion 52 that connects the sensor 50 and the ECU 55 is provided to extend in a direction different from the direction in which the pressure-receiving member 15 is stretched, i.e., the front-rear direction of the seat. Specifically, the tail portion 52 is configured to extend in the width direction of the seat. Therefore, interference between the hooks 17 that fix the pressure-receiving member 15 and the tail portion 52 is suppressed, the tail portion 52 can be easily connected to the ECU 55, and the workability when assembling the seat cushion 1 is improved.

[0063] Furthermore, if the pressure-receiving member 15 is fixed to the cushion side frames 11, 11 by the hook 17, the direction in which the pressure-receiving member 15 is oriented is in the seat width direction. In this case, by making the direction in which the tail portion 52 extends from the sensor 50 different from the seat width direction, for example, in the front-to-back direction, interference between the tail portion 52 and the hook 17 is suppressed. This improves the workability when assembling the seat cushion 1.

[0064] In a vehicle seat S comprising a main pad 31 that receives the load of the occupant, an under pad 32 fitted into a recess 33 provided on the lower surface of the main pad 31, and a sensor 50 positioned on the upper surface of the under pad 32 (the surface on the seating surface 31a side), the pressure receiving member 15 is positioned below the main pad 31, i.e., on the opposite side of the seating surface 31a, in the stacking direction of the main pad 31 and the under pad 32. In this case, it is preferable that the direction in which the pressure receiving member 15 is stretched across the seat frame F and the direction in which the harness 53 of the sensor 50 is pulled out along the upper surface of the under pad 32, i.e., the load-receiving surface, are different when the lower surface of the recess 33 is used as the reference plane. In this case, the harness 53 should pass outside the side portion 15a of the pressure-receiving member 15.

[0065] As shown in Figures 3 and 6, the pressure-receiving member 15 has a plurality of through holes 15b and ribs 15c formed therein. In a top view of the sheet, the recess 33, underpad 32 and sensor 50 may overlap the through holes 15b and ribs 15c of the pressure-receiving member 15. The recess 33, underpad 32, and sensor 50 overlap with the through-hole 15b, improving the visibility of the recess 33 and underpad 32 when assembling the seat cushion 1. In particular, when the contour of the recess 33 and the through-hole 15b overlap, it is possible to confirm that the underpad 32 is correctly fitted into the recess 33.

[0066] Furthermore, when the rib 15c and the sensor 50 overlap, the rigidity of the pressure-receiving member 15 is improved by the rib 15c, thereby mitigating disturbances (such as vibrations) transmitted to the sensor 50.

[0067] Furthermore, the sensor 50 and the through-hole 15b do not have to overlap. If they do not overlap, for example, when assembling the sensor 50, it is possible to prevent the harness 53 of the tail section 52 from getting tangled in the through-hole 15b. Also, if the rib 15c and the sensor 50 do not overlap, there are no obstacles when assembling the sensor 50 or the underpad 32, thus improving workability during assembly.

[0068] <Variation> Using Figures 10 to 12D, a modified version of seat cushion 1, seat cushion 1A, will be described. Compared to seat cushion 1 shown in Figure 1, seat cushion 1A has different shapes for the main pad 31, under pad 32, and recess 33. Also, seat cushion 1A is equipped with a vibrator 57 instead of a blower device 56. Other components are the same as those of seat cushion 1, so the same reference numerals are used and detailed explanations are omitted.

[0069] The seat cushion 1A has a seating surface 31Aa that receives the load of the person sitting on it, and a main pad 31A with a recess 33A formed on the side opposite to the seating surface 31Aa, and an under pad 32A that fits into the recess 33A. Furthermore, a sensor 50 is positioned on the upper surface 32Aa of the underpad 32A, that is, the surface on the seating surface 31Aa side, and a vibration device 57 is provided on the lower surface 31Ab of the main pad 31A. When viewed from above the seat, that is, from a direction perpendicular to the seating surface 31Aa, the recess 33A and the underpad 32A are positioned so as not to overlap with the vibration device 57, as shown in Figure 11. Similarly, when viewed from the side of the seat, the recess 33A and the underpad 32A are positioned so as not to overlap with the vibration device 57.

[0070] The vibration device 57 is configured to vibrate, for example, to notify a seated person of a warning or the like. The vibration device 57 corresponds to the second device of the present invention. The recess 33A or underpad 32A is positioned so as not to overlap with the vibration device 57 in the top view and side view of the seat. This reduces the influence received from the vibration device 57 and suppresses the degradation of the performance of the sensor 50.

[0071] The shape of the recess 33A will be explained using Figure 10. The recess 33 formed in the main pad 31 shown in Figure 3 had side walls on the front, rear, left, and right sides. On the other hand, the recess 33A of the main pad 31A shown in Figure 10 does not have a side wall located at the front, and is formed to have an opening not only on the bottom side of the recess 33A but also on the front side. In other words, the side walls of the recess 33A are formed in a U shape. By forming the recess 33A of the main pad 31A in this way, the under pad 32A can be inserted not only from below the seat but also from the front of the seat, for example, improving workability during assembly. Furthermore, as shown in Figure 12A, the under pad 32A is formed so that its front side surface 32Ac is inclined diagonally towards the rear of the seat.

[0072] Furthermore, the front side surface 32Ac, which is part of the underpad 32A, is positioned to be continuous with the inner wall of the through-hole 36 that penetrates the main pad 31A. In other words, the front side surface 32Ac of the underpad 32A serves as the inner wall of the through-hole 36.

[0073] The vibrator 57 is mounted in front of the seat on the main pad 31, as shown in Figure 11. Furthermore, the harness 57a extending from the rear end of the vibrator 57 is positioned by the front side surface 32Ac of the underpad 32A, as shown in Figure 12A. As a result, the harness 57a is positioned to extend diagonally backward from the seat along the front side surface 32Ac of the underpad 32A.

[0074] In other words, the side of the underpad 32A that does not face the side wall of the recess 33A, that is, the front side 32Ac of the underpad 32A that faces the opening in front of the recess 33A, functions as a wall for the harness 57a extending from the vibrator 57 to follow along. By configuring the underpad 32A in this way, the positional restriction of the harness 57a can be completed with the configuration of the underpad 32A.

[0075] The shape of the front side surface 32Ac of the underpad 32A is not limited to this. For example, as shown in Figure 12B, the front side surface 32AAc may be formed so as to be perpendicular to the bottom surface of the recess 33A or the lower surface of the underpad 32AA. In this case, the harness 57a extending from the vibrator 57 is positioned by the front side surface 32AAc and is arranged to extend downward toward the seat.

[0076] Furthermore, as shown in Figure 12C, the underpad 32AB may be formed so that the front side surface 32ABc is inclined diagonally forward of the seat. In this case, the harness 57a extending from the vibrator 57 is positioned by the front side surface 32ABc and is arranged to extend diagonally forward of the seat.

[0077] Alternatively, as shown in Figure 12D, a through-hole 32ACc may be formed in the front side portion for passing the harness 57a, thereby restricting the position of the harness 57a. Furthermore, when the front side portion is extended forward, as shown in Figure 12D for the underpad 32AC, the front side portion of the underpad 32AC may be formed to conform to the shape of the side portion of the pressure receiving member 15. In the modified examples shown in Figures 10 to 12D, the vibration device 57 is positioned in front of the sensor 50 as a second device, but the vibration device 57 may be replaced with another device, such as a blower device, air cell, temperature control device, ECU, or seat sensor.

[0078] <Method for manufacturing a vehicle seat S> The vehicle seat S (vehicle seat) is preferably manufactured by a manufacturing method that includes preparing a cushion pad 30 (seat pad) having a seating surface 31a that receives the load of the occupant, a main pad 31 (first pad) with a recess 33 formed on the side opposite to the seating surface 31a, and an under pad 32 (second pad) that fits into the recess 33, a sensor 50 (first device), and a blower device 56 (second device), placing the sensor 50 (first device) on the main pad 31 (second pad), fitting the under pad 32 (second pad) into the recess 33, and positioning the blower device 56 (second device) in a position that does not overlap with at least one of the recess 33 and the under pad 32 (second pad) when viewed perpendicular to the seating surface 31a or from the side of the vehicle seat S.

[0079] <Seatback 2> In the above description, a seat cushion 1 of a vehicle seat S was used as an example of this embodiment of the present invention. However, the configuration of the present invention is not limited to the seat cushion 1 and can also be applied to a seat back 2. For example, as shown in Figure 13, the back pad 40 of the seat back 2 is composed of a main pad 41 with a recess 43 and a rear pad 42 that fits into the recess 43. The main pad 41 has a seating surface 41a that receives the load of the occupant, and the recess 43 is formed on the back of the main pad 41, that is, on the surface opposite to the seating surface 41a. A sensor 60 is positioned on the front surface of the rear pad 42, that is, on the surface facing the seating surface 41a, and a blower device 66 is positioned on the main pad 41. In this case, the blower device 66 or the vibration device 67 should be positioned so as not to overlap with at least one of the recess 43 and the rear pad 42 when the vehicle seat S is viewed from the front, that is, from a direction perpendicular to the seating surface 41a. Furthermore, the blower device 66 or the vibration device 67 should be positioned so as not to overlap with at least one of the recess 43 and the rear pad 42 when the vehicle seat S is viewed from the side. The back pad 40 has a ventilation passage (not shown) that communicates with the blower device 66, but the ventilation passage is formed in an area where the rear pad 42 is not located. The ventilation passage also has a branching point (not shown), which is positioned so that it does not overlap with the rear pad 42 in the vertical direction of the seat when the vehicle seat S is viewed from the front, in other words, when viewed from a direction perpendicular to the seating surface 41a.

[0080] In summary, an embodiment of the present invention has been described, with reference to the vehicle seat S mounted on a vehicle, and its configuration example illustrated with figures. However, the present invention is not limited to seats mounted on ground-running vehicles with wheels, such as automobiles and trains, but may also be applied to seats mounted on aircraft, ships, and other vehicles that move on surfaces other than the ground.

[0081] Embodiments of the present invention are described below. (Note 11) It is a seat for a vehicle, The seat frame and A seat pad having a seating surface that receives the weight of the occupant, a first pad with a recess formed on the opposite side of the seating surface, and a second pad that fits into the recess, A pressure-receiving member is provided, which is stretched across the seat frame and positioned on the opposite side of the seating surface of the first pad. The second pad includes a device disposed on the seating surface side, The device comprises a main body and a tail section including a harness extending from the main body. A vehicle seat characterized in that the harness of the tail portion is provided such that the direction in which the harness extends from the main body portion is different from the direction in which the pressure-receiving member is stretched across the seat frame. (Note 12) The vehicle seat according to Appendix 11, characterized in that the harness passes outside the end of the pressure-receiving member. (Note 13) The tail portion has a clamping portion that is sandwiched between the first pad and the second pad, and a non-clamping portion that is not sandwiched between the first pad and the second pad. The non-clamping portion is positioned outside the second pad, following the outer shape of the second pad. The vehicle seat according to Appendix 12, characterized in that the tip of the non-clamping portion does not extend in a direction perpendicular to the seating surface. (Note 14) The tail portion has a clamping portion that is sandwiched between the first pad and the second pad, and a non-clamping portion that is not sandwiched between the first pad and the second pad. The non-clamping portion is positioned outside the second pad, following the outer shape of the second pad. The vehicle seat according to Appendix 11, characterized in that the tip of the non-clamping portion does not extend in a direction perpendicular to the seating surface. (Note 15) The vehicle seat according to Appendix 13, characterized in that the tip of the non-clamping portion extends along the width direction of the seat. (Note 16) The non-clamping portion is positioned away from the surface of the second pad, and a space is formed between the non-clamping portion and the second pad. The vehicle seat according to appendix 13 or 14, characterized in that a harness other than the aforementioned harness is arranged in the space. (Note 17) The end of the pressure-receiving member and the non-clamping portion are in contact. The vehicle seat according to Appendix 13, characterized in that the portion of the pressure-receiving member that comes into contact with the non-clamping portion is chamfered. The above configuration can suppress damage to the non-clamped portion. (Note 18) The end of the pressure-receiving member and the non-clamping portion are in contact. The vehicle seat according to Appendix 13, characterized in that the pressure-receiving member has a receiving portion formed in the portion that contacts the non-clamping portion, which accommodates a part of the non-clamping portion. The above configuration suppresses damage to the non-clamped portion. Furthermore, it facilitates the positioning of the non-clamped portion. (Note 19) The vehicle seat according to Appendix 13, characterized in that the end of the pressure-receiving member and the non-clamping portion are not in contact. The above configuration makes it possible to suppress damage to the pressure-receiving member and the non-clamping portion. (Note 20) The vehicle seat according to Appendix 13, characterized in that a cushioning material is provided between the end of the pressure-receiving member and the non-clamping portion. The above configuration makes it possible to suppress damage to the pressure-receiving member and the non-clamping portion.

[0082] (Note 21) It is a seat for a vehicle, A seat pad having a seating surface that receives the weight of the occupant, a first pad with a recess formed on the opposite side of the seating surface, and a second pad that fits into the recess, The second pad includes a device disposed on the seating surface side, The first pad has a through hole formed in it. A vehicle seat characterized in that a portion of the second pad is arranged to be continuous with the inner wall of the through hole. (Note 22) It is a seat for a vehicle, A seat pad having a seating surface that receives the weight of the occupant, a first pad with a recess formed on the opposite side of the seating surface, and a second pad that fits into the recess, The second pad includes a device disposed on the seating surface side, An opening is formed in a part of the side surface of the recess. A vehicle seat characterized in that the side surface of the second pad facing the opening of the recess is configured so that a harness follows along it. The harness positioning can be fully controlled by the structure of the second pad. (Note 23) It is a seat for a vehicle, A seat pad having a seating surface that receives the weight of the occupant, a first pad with a recess formed on the opposite side of the seating surface, and a second pad that fits into the recess, The second pad comprises a first device disposed on the seating surface side, The first pad is divided into a first region and a second region, with a stepped region having a step in a direction perpendicular to the seating surface, and the stepped region serving as the boundary. The vehicle seat is characterized in that the second pad is positioned on either one of the two sides. (Note 24) The vehicle seat according to Appendix 23, characterized in that the first pad has a second device positioned in the area of ​​the first pad, which is the area of ​​the first pad and the second pad where the second pad is not positioned. (Note 25) The second device is a blower device, The vehicle seat according to Appendix 24, characterized in that a ventilation passage for ventilation with the blower device is formed in an area where the second pad is not located. (Note 26) The aforementioned ventilation passage has a branching point, The vehicle seat according to Appendix 25, characterized in that the branching point is positioned so as not to overlap with the second pad in the front-to-back direction or the up-to-down direction of the seat when viewed from a direction perpendicular to the seating surface. (Note 27) The seat frame and The seat frame is spanned and a pressure-receiving member is positioned on the opposite side of the seating surface of the first pad, The first device comprises a main body and a tail section including a harness extending from the main body. The vehicle seat according to Appendix 23, characterized in that the harness of the tail portion is provided such that the direction in which the harness extends from the main body portion is different from the direction in which the pressure receiving member is stretched across the seat frame. [Explanation of Symbols]

[0083] S Vehicle seats (seats for vehicles) F Seat Frame Tr epidermis 1 seat cushion 2 seatbacks 3 Headrests 5. Reclining device 6. Slide rail device 6a Lower Rail 6b Upper rail 10 Cushion Frames 11 Cushion side frame 12 Front connecting frame 13. Rear connecting frame 14 Pan Frames 15 Pressure-receiving member 15a Side 15b Through hole 15cm Rib 16, 16A~16C Guide section (accommodation section) 16a, 16Aa~16Ca base 17 hooks 20 Backframe 21 Backside Frame 22 Upper frame 23 Lower frame 24 connecting frames 25 Pressure-receiving member 26 Headrest Holder 30 Cushion pads (seat pads) 31, 31A Main pad (first pad) 31a, 31Aa seating surface 31b, 31Ab Underside (the side opposite the seating surface) 32, 32A, 32AA, 32AB, 32AC Underpad (Second Pad) 32a Top surface (surface on the seating surface side) 32b Side 32Ac, 32AAc, 32ABc Front side 32ACc through hole 33, 33A, recess 34. Ventilation channel (groove section) 34a Branch point 35. Suspension groove (groove section) 36 Through holes 40 Back pads (seat pads) 41 Main pad (first pad) 41a Seat surface 42 Rear pad (second pad) 43 Recess 50 Sensors (First Device) 51 Sensor body (main unit) 52 Tail section 52a Clamping part 52b Non-clamping part 52c Tip 52d terminal 53 Harness 55 ECU 55a connector 56. Blower device (second device) 56a Duct 57 Vibration device (second device) 58 Space 59 Harness 60 Sensor (First device) 66 Blower device (second device) 67 Vibration device (second device) R1 First area R2 second area R3 Step Area

Claims

1. It is a seat for a vehicle, A seat pad having a seating surface that receives the weight of the occupant, a first pad with a recess formed on the opposite side of the seating surface, and a second pad that fits into the recess, In the second pad, the first device is arranged on the seating surface side, The first pad is provided with a second device, A vehicle seat characterized in that at least one of the recess and the second pad is positioned so as not to overlap with the second device when viewed in a direction perpendicular to the seating surface or from the side of the vehicle seat.

2. The vehicle seat according to claim 1, characterized in that the second device is a blower device.

3. The vehicle seat according to claim 1, characterized in that the second device is a vibrating device.

4. The first pad has a groove formed in it. The vehicle seat according to claim 1, characterized in that at least one of the recess and the second pad is positioned so as not to overlap with the groove when viewed from a direction perpendicular to the seating surface.

5. The vehicle seat according to claim 4, characterized in that the groove portion is a suspension groove formed on the seating surface of the first pad.

6. The vehicle seat according to claim 4, characterized in that the groove portion is a ventilation passage formed in the first pad.

7. The first device comprises a main body and a tail section including a harness extending from the main body. The tail portion is connected to the end of the main body portion, The tail portion has a clamping portion that is sandwiched between the first pad and the second pad, and a non-clamping portion that is not sandwiched between the first pad and the second pad. The non-clamping portion is positioned outside the second pad, following the outer shape of the second pad. The vehicle seat according to claim 1, characterized in that the tip of the non-clamping portion does not extend in a direction perpendicular to the seating surface.

8. The vehicle seat according to claim 7, characterized in that the tip of the non-clamping portion extends along the width direction of the seat.

9. The first device comprises a main body and a tail section including a harness extending from the main body. The tail portion is connected to the end of the main body portion, The tail portion has a clamping portion that is sandwiched between the first pad and the second pad, and a non-clamping portion that is not sandwiched between the first pad and the second pad. The vehicle seat according to claim 1, characterized in that the non-clamping portion is positioned away from the surface of the second pad, and a space is formed between the non-clamping portion and the second pad.

10. The seat frame and The seat frame is spanned and a pressure-receiving member is positioned on the opposite side of the seating surface of the first pad, The first device comprises a main body and a tail section including a harness extending from the main body. The vehicle seat according to claim 1, characterized in that the harness of the tail portion is provided such that the direction in which the harness extends from the main body portion is different from the direction in which the pressure receiving member is stretched across the seat frame.

Images