Vehicle seat

Abstract

To provide a vehicle seat capable of securing adhesion between a seated person and biological sensors.SOLUTION: A vehicle seat S comprises a cushioning material 1a(2a), a surface material 1b(2b) covering the cushioning material 1a(2a), and biological sensors 30(40) which are installed between the cushioning material 1a and the surface material 1b, and detect biological signals of a seated person. The surface material 1b has decorative stitch parts 60 which are formed on the surface of the surface material 1b on a seating surface at the central part in a seat width direction of the vehicle seat S. The biological sensor 30 has a sensor detection part which detects the biological signal of the seated person on the seating surface of the central part of the vehicle seat S. The sensor detection part is arranged at a position avoiding the decorative stitch part 60 on the seating surface of the central part of the vehicle seat S.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a vehicle seat, and more particularly to a vehicle seat having a biosensor between a cushion material and a cover material. [Background technology]

[0002] Conventionally, vehicle seats have been known that have a function for measuring the driver's biometric information while driving the vehicle. For example, a seat is known that has a function for measuring the driver's heart rate using a biosensor that detects the driver's biosignal, and quickly alerting the driver if any abnormal changes occur in the heart rate (see Patent Document 1, specifically). In addition, a seat is known that uses a biosensor that detects the driver's seated posture to estimate the driver's physical condition, and controls the seat movement according to the estimation results to help the driver recover from fatigue (see Patent Document 2, specifically). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-123359 A [Patent Document 2] JP 2017-65504 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, some vehicle seats such as those described in Patent Documents 1 and 2 have decorative stitching formed on the surface of the vehicle seat (strictly speaking, on the surface of the covering material) in order to improve the marketability (design) of the vehicle seat. In this case, if the biosensor (sensor detection portion) and the decorative stitching portion overlap in the thickness direction of the seat cushion, the contact between the driver and the biosensor may be impaired, which may affect the sensing performance of the biosensor. On the other hand, if the degree of freedom in the arrangement pattern of the decorative stitching portion is reduced, there is a concern that the design of the vehicle seat will be adversely affected.

[0005] An object of the present invention is to provide a vehicle seat that can ensure close contact between a seat occupant and a biosensor. Another object of the present invention is to provide a vehicle seat having a decorative portion (decorative stitch portion) formed on the surface thereof, which can ensure the sensing performance of a biosensor and enhance the design. [Means for solving the problem]

[0006] The above problem is solved by the vehicle seat of the present invention, which provides a vehicle seat comprising a cushion material, a cover material covering the cushion material, and a biosensor attached between the cushion material and the cover material and detecting the biosignals of a seated occupant, wherein the cover material has a decorative portion formed on a surface of the cover material at a seating surface in a central portion in a seat width direction of the vehicle seat, and the biosensor has a sensor detection portion that detects the biosignals of the seated occupant at the seating surface in the central portion of the vehicle seat, and the sensor detection portion is positioned on the seating surface in the central portion of the vehicle seat at a position that avoids the decorative portion.

[0007] In this case, the device is provided with a control device that processes the bio-signal detected by the bio-sensor, and the bio-sensor is provided with a transmission path for electrically connecting the sensor detection unit and the control device, and the transmission path is connected to a plurality of the sensor detection units on the surface of the cushioning material and extends across the decorative unit. The seat cushion may further include a control device that processes the bio-signal detected by the bio-sensor, the bio-sensor having a transmission path for electrically connecting the sensor detection unit and the control device, the transmission path being connected to a plurality of the sensor detection units on the surface of the cushion material and extending across the decorative unit, the sensor detection units being attached to the surface side of the cushion material and the control device being attached to the back side of the cushion material, the cushion material being provided at a position on the seating surface different from the sensor detection units, the cushion material having a sensor insertion hole that penetrates in a thickness direction of the cushion material and allows the transmission path to pass through, the transmission path connecting the sensor detection unit and the control device while passing through the sensor insertion hole, the sensor insertion hole being positioned between the plurality of sensor detection units on the seating surface in the seat width direction or in a direction intersecting the seat width direction, and being positioned at a position on the seating surface overlapping the decorative unit.

[0008] The above problem is also solved by a vehicle seat comprising a cushioning material, a skin covering the cushioning material, and a biosensor attached between the cushioning material and the skin for detecting the biosignals of an occupant, wherein the skin has a decorative portion formed on a surface of the skin on the seating surface of the vehicle seat, the biosensor has a plurality of sensor detection portions for detecting the biosignals of the occupant, a plurality of the decorative portions are formed on the seating surface, each extending a long length in a predetermined direction, the sensor detection portions are arranged alternately with the decorative portions in the predetermined direction of the vehicle seat, and are positioned in a position that avoids the decorative portions. In this case, the sensor detection portion is arranged alternately with the decorative portion in the fore-and-aft direction of the vehicle seat, and the sensor detection portion is positioned at one end of the vehicle seat in the fore-and-aft direction, and the decorative portion is positioned at the other end of the vehicle seat in the fore-and-aft direction.

[0009] The above problem is also solved by a vehicle seat comprising a cushioning material, a skin covering the cushioning material, and a biosensor attached between the cushioning material and the skin for detecting the biosignals of a seated occupant, wherein the skin has a decorative portion formed on a surface of the skin on the seating surface of the vehicle seat, the biosensor has a plurality of sensor detection portions for detecting the biosignals of the seated occupant, a plurality of the decorative portions are formed on the seating surface, each extending a long length in a predetermined direction, and the biosensor comprises a control device for processing the biosignals detected by the biosensor, the biosensor comprises a plurality of transmission paths which electrically connect the plurality of sensor detection portions and the control device and extend a long length in the predetermined direction, and the transmission paths are arranged alternately with the decorative portions in the front-rear direction or the up-down direction of the seat, and are positioned in a position which avoids the decorative portions.

[0010] The above problem is also solved by a vehicle seat comprising a cushioning material, a skin covering the cushioning material, and a biosensor attached between the cushioning material and the skin for detecting a biosignal of a seated occupant, wherein the skin has a decorative portion formed on a surface of the skin on the seating surface of the vehicle seat, the biosensor has a plurality of sensor detection portions which detect the biosignals of the seated occupant, the decorative portion extends in a longitudinal direction of the seat and comprises a control device which processes the biosignals detected by the biosensor, the biosensor has a transmission path which extends in the longitudinal direction of the seat to electrically connect the plurality of sensor detection portions and the control device, the transmission path and the decorative portion each extend in the longitudinal direction of the seat and are arranged so as to be parallel to and overlapping when viewed from above.

[0011] The above problem is also solved by a vehicle seat comprising a cushioning material, a skin covering the cushioning material, and a biosensor attached between the cushioning material and the skin for detecting a biosignal of a seated occupant, wherein the skin has a decorative portion formed on a surface of the skin on the seating surface of the vehicle seat, the biosensor has a plurality of sensor detection portions which detect the biosignals of the seated occupant, the decorative portion extends in a longitudinal direction of the seat and comprises a control device which processes the biosignals detected by the biosensor, the biosensor has a transmission path which extends in the vertical direction of the seat to electrically connect the plurality of sensor detection portions and the control device, the transmission path and the decorative portion each extend in the vertical direction and are arranged so as to be parallel to and overlapping when viewed from the front of the seat.

[0012] The above problem is also solved by a vehicle seat comprising a cushion material, a skin material covering the cushion material, and a biosensor attached between the cushion material and the skin material and detecting the biosignals of a seated occupant, wherein the skin material has a decorative portion formed on a surface of the skin material on the seating surface of the vehicle seat, the biosensor has a sensor detection portion that detects the biosignals of the seated occupant, the decorative portions are formed in plurality on the seating surface and each extends elongatedly in a predetermined direction, the decorative portions include a first decorative portion formed so as to divide the seating surface in the front-to-rear direction of the seat, and a second decorative portion formed so as to divide the seating surface in the seat width direction, and the sensor detection portion and an intersection of the first decorative portion and the second decorative portion are positioned so as to avoid overlapping positions when viewed from above the seat.

[0013] The above problem is also solved by a vehicle seat comprising a cushion material, a skin material covering the cushion material, and a biosensor attached between the cushion material and the skin material and detecting the biosignals of a seated occupant, wherein the skin material has a decorative portion formed on a surface of the skin material on the seating surface of the vehicle seat, the biosensor has a sensor detection portion detecting the biosignals of the seated occupant, the decorative portions are formed in plurality on the seating surface and each extends elongated in a predetermined direction, the decorative portions include a first decorative portion formed so as to divide the seating surface in the vertical direction of the seat, and a second decorative portion formed so as to divide the seating surface in the seat width direction, and the sensor detection portion and an intersection of the first decorative portion and the second decorative portion are positioned so as to avoid overlapping positions when viewed from the front of the seat. Effect of the Invention

[0014] According to the present invention, it is possible to realize a vehicle seat that can ensure close contact between a seat occupant and a biosensor. Specifically, it is possible to ensure the sensing performance of the biosensor in a vehicle seat having a decorative portion formed on the surface. [Brief description of the drawings]

[0015] [Figure 1] 1 is an external perspective view showing a vehicle seat according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a perspective view showing a seat frame that serves as a framework. [Diagram 3] FIG. 4 is a top view showing the seat cushion, illustrating the layout pattern of the sensor, the transmission path, and the decorative stitch portion. [Figure 4] FIG. 4 is a front view showing the seat back, illustrating the layout pattern of the sensors, the transmission paths, and the decorative stitching portions. [Diagram 5] 4 is a perspective view illustrating an assembled state of a seat frame, a cushioning material, a biosensor, and a transmission line. FIG. [Figure 6] FIG. 2 is a block diagram of a biosensor, a control device, and a power supply. [Figure 7A]FIG. 13 is a top view showing the seat cushion, illustrating a first modified example of the arrangement pattern of the biosensor and the decorative stitching portion. [Figure 7B] FIG. 13 is a diagram showing a second modified example of the arrangement pattern of the biosensor and the decorative stitch portion. [Figure 7C] FIG. 13 is a diagram showing a third modified example of the arrangement pattern of the biosensor and the decorative stitch portion. [Figure 7D] FIG. 13 is a diagram showing a fourth modified example of the arrangement pattern of the biosensor and the decorative stitch portion. [Figure 8] FIG. 11 is a front view showing the seat back, illustrating a fifth modified example of the arrangement pattern of the biosensor and the decorative stitching portion. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an embodiment of the present invention will be described with reference to FIGS. This embodiment relates to an invention for a vehicle seat having a main feature that the vehicle seat is provided with a biosensor attached between a cushion material and a cover material and detecting the biosignals of an occupant, the cover material having a decorative portion (decorative stitch portion) formed on the surface of the cover material on the seating surface of the vehicle seat, the biosensor having a sensor detection portion that detects the biosignals of the occupant, and the sensor detection portion is positioned on the seating surface at a position that avoids the decorative portion. In addition, the side of the vehicle seat on which a seat occupant sits relative to the seat back is the front side of the seat.

[0017] As shown in FIG. 1, the vehicle seat S of this embodiment is a vehicle seat, and is mainly composed of a seat body having a seat cushion 1, a seat back 2, and a headrest 3, sheet-shaped biosensors 30, 40 attached inside the seat body and detecting an electrical signal (biosignal) corresponding to the bioelectric potential of an occupant seated in the seat body, and a control device 50 that receives the biosignal detected by the biosensors 30, 40 and transmits the received biosignal to an outside (for example, a mobile terminal M owned by the occupant). Moreover, decorative stitching portions 60 are formed on the surfaces of the seat cushion 1 and the seat back 2, respectively.

[0018] As shown in Figures 1 and 3, the seat cushion 1 is a seating portion that supports a seated person from below, and is configured by placing a cushion material 1a on a cushion frame 10 shown in Figure 2, which serves as a skeleton, and covering it with a skin material 1b. The cushion material 1a is a pad member made of urethane foam or the like, and is composed of a cushion central portion 1A located in the center of the seat width direction, and left and right cushion side portions 1B (side bolster portions) located outside the cushion central portion in the seat width direction. On the surface of the cushion material 1a, left and right skin hanging grooves 1aa are formed which extend in the front-rear direction of the seat so as to separate the cushion central portion 1A from the left and right cushion side portions 1B. Further, on the surface of the cushion material 1a, a sensor insertion hole 1ab for passing a part of the biosensor 30 is formed between the left and right skin hanging grooves 1aa and penetrating the cushion material 1a in the thickness direction. Incidentally, a cushion recess corresponding to the outer shape of the biosensor 30 may be formed on the surface of the cushion material 1a in a portion facing the biosensor 30 in order to ensure a comfortable seating feeling.

[0019] As shown in Figs. 1 and 4, the seat back 2 is a backrest portion that supports the back of a seated occupant from behind, and is configured by placing a cushion material 2a on a back frame 20 shown in Fig. 2, which serves as the skeleton, and covering it with a skin material 2b. The cushion material 2a is composed of a cushion central portion 2A located in the center in the seat width direction, and left and right cushion side portions 2B located on the outer sides in the seat width direction. On the surface of the cushion material 2a, left and right skin hanging grooves 2aa are formed which extend in the up-down direction so as to separate the cushion center portion 2A from the left and right cushion side portions 2B.

[0020] As shown in FIG. 2, the cushion frame 10 is a substantially rectangular frame-like body and is mainly composed of cushion side frames 11 arranged on the left and right sides, a plate-shaped pan frame 12 (mounting frame) mounted on the front end portion of each cushion side frame 11, a rear connecting frame 13 connecting the rear portions of each cushion side frame 11, and a number of elastic springs 14 (elastic support members) hooked onto the pan frame 12 and the rear connecting frame 13 and extending in a snake-like shape in the fore-and-aft direction of the seat.

[0021] The cushion side frame 11 is a plate-shaped frame that is long in the front-rear direction of the seat. A reclining device 4 is attached to the rear portion of the cushion side frame 11, and a rail device 6 is attached to its lower portion via a height link device 5.

[0022] The pan frame 12 is a frame that supports the thighs of a seated occupant and is made of a rectangular plate body. Both end portions in the seat width direction are placed on and attached to the upper surfaces of the cushion side frames 11. The elastic springs 14 are elastic support members that support the buttocks of a seated occupant, and a plurality of elastic springs 14 are provided at predetermined intervals in the seat width direction. The elastic spring 14 is configured such that its front end portion is hooked onto the edge of a hook hole (not shown) formed on the top surface of the pan frame 12, and its rear end portion is hooked onto the rear connecting frame 13 via a hook member (not shown).

[0023] As shown in FIG. 2, the back frame 20 is a substantially rectangular frame-like body and is mainly composed of back side frames 21 arranged on the left and right sides, an inverted U-shaped upper frame 22 connecting the upper end portions of each back side frame 21, a plate-shaped lower frame 23 connecting the lower end portions of each back side frame 21, a plurality of elastic wires 24 (wire members) that are hooked onto each back side frame 21 and extend in a snake-like shape in the seat width direction, and a support plate 25 that is held by the plurality of elastic wires 24 and supports the seated occupant.

[0024] The back side frame 21 is a sheet metal member that extends in the vertical direction and has a generally C-shaped cross section. In the above configuration, the back frame 20 is capable of rotating relative to the cushion frame 10.

[0025] 1 and 3, the biosensor 30 is a sheet-shaped pressure sensor that detects the seating pressure applied to the seating surface of the seat cushion 1 when a person sits on the seat, and is attached between the cushion material 1a and the skin material 1b and disposed in the center portion in the seat width direction. Specifically, it is disposed between the left and right skin hanging grooves 1aa in the seat width direction. 4, the biosensor 40 is a pressure sensor that detects the seating pressure applied to the seating surface of the seat back 2, and is attached between the cushion material 2a and the skin material 2b and disposed in the center portion in the seat width direction. Specifically, it is disposed between the left and right skin hanging grooves 2aa in the seat width direction. Here, "seating pressure" refers to a value that changes periodically in response to the physiological activity of an occupant, specifically breathing, when the occupant is seated on the seat cushion 1, and is a target value that is detected by a pressure sensor.

[0026] As shown in FIG. 3, the biosensor 30 includes a front biosensor 30a disposed in the center of the seat cushion 1 and a rear biosensor 30b disposed in the rear portion of the seat cushion 1. The biosensors 30a and 30b are disposed at positions corresponding to or near the hip points of a seated person, and each detects the seating pressure independently and outputs a detection signal based on the detection result of the seating pressure.

[0027] As shown in Figures 3 and 5, the biosensors 30a and 30b have a sensor detection unit 31 that detects the seating pressure of a seated person, and a transmission path (a first transmission path 32, a second transmission path 33) for outputting a detection signal when the sensor detection unit 31 detects the seating pressure. The sensor detection unit 31 is a pressure-sensitive switch that is adhered onto a conductive sheet. The first transmission path 32 is formed by adhering a conductive wire serving as a transmission path onto a conductive sheet. The second transmission path 33 is composed of a first portion 33a in which conductive wires are bonded onto a conductive sheet, and a second portion 33b in which the conductive wires are bundled to form a wire harness. The second transmission path 33 passes through a sensor insertion hole 1ab in the cushion material 1a and extends to connect the first transmission path 32 to the control device 50 that receives the detection signal.

[0028] The front biosensor 30a has a first sensor detection unit 31a, a second sensor detection unit 31b, a third sensor detection unit 31c, and a fourth sensor detection unit 31d. The first sensor detection portion 31a and the second sensor detection portion 31b are disposed at the same position (overlapping position) in the seat front-rear direction, and at different positions in the seat width direction. The third sensor detection unit 31c and the fourth sensor detection unit 31d are positioned rearward of the first sensor detection unit 31a (second sensor detection unit 31b), positioned at the same position (overlapping position) in the seat front-to-rear direction, and positioned at different positions in the seat width direction.

[0029] The front biosensor 30a also has, as a first transmission path 32, a first portion 32a connecting the first sensor detection portion 31a and the second sensor detection portion 31b, a second portion 32b connecting the third sensor detection portion 31c and the fourth sensor detection portion 31d, and a third portion 32c connecting the first portion 32a and the second portion 32b and extending toward the sensor insertion hole 1ab. The first portion 32a and the second portion 32b extend in the seat width direction, and the third portion 32c extends in the seat front-rear direction.

[0030] The rear biological sensor 30b has a fifth sensor detection unit 31e and a sixth sensor detection unit 31f. The fifth sensor detection unit 31e and the sixth sensor detection unit 31f are disposed at the same position (overlapping position) in the seat front-rear direction, and are disposed at different positions in the seat width direction. In addition, the rear biological sensor 30b has, as the first transmission path 32, a fourth portion 32d connecting the fifth sensor detection portion 31e and the sixth sensor detection portion 31f, and a fifth portion 32e extending from the fourth portion 32d toward the sensor insertion hole 1ab. The fourth portion 32d extends along the seat width direction, and the fifth portion 32e extends along the seat front-rear direction.

[0031] In the above configuration, as shown in FIG. 5, the first portion 33a of the second transmission path 33 is continuous with the first transmission path 32, bent downward, and extends so as to pass through the sensor insertion hole 1ab. The second portion 33b of the second transmission path 34 continues from the first portion 33a, bends toward the front of the seat, and extends further toward the bottom surface of the pan frame 12, with its extending tip connected to the control device 50 via a connector.

[0032] As shown in FIG. 4, the biosensor 40 is disposed from the center to the lower portion of the seat back 2, and has a sensor detection portion 41 and transmission paths (a first transmission path 42 and a second transmission path 43). The first transmission path 42 is disposed on the surface of the cushion material 2a. The second transmission path 43 continues from the first transmission path 42 and extends toward the seat cushion 1. Then, it passes below the cushion material 1a and the cushion frame 10, and its extending tip is connected to the control device 50 via a connector.

[0033] The biosensor 40 has a first sensor detection unit 41a, a second sensor detection unit 41b, a third sensor detection unit 41c, a fourth sensor detection unit 41d, a fifth sensor detection unit 41e, and a sixth sensor detection unit 41f. The first sensor detection portion 41a and the second sensor detection portion 41b are disposed at the same position (overlapping position) in the up-down direction, and at different positions in the sheet width direction. The third sensor detection unit 41c and the fourth sensor detection unit 41d are positioned lower than the first sensor detection unit 31a (second sensor detection unit 31b), positioned at the same position (overlapping position) in the vertical direction, and positioned at different positions in the sheet width direction. The fifth sensor detection unit 41e and the sixth sensor detection unit 41f are positioned lower than the third sensor detection unit 41c (fourth sensor detection unit 41d), positioned at the same position (overlapping position) in the vertical direction, and positioned at different positions in the sheet width direction.

[0034] The biosensor 40 also has, as a first transmission path 42, a first portion 42a connecting the first sensor detection portion 41a and the second sensor detection portion 41b, a second portion 42b connecting the third sensor detection portion 41c and the fourth sensor detection portion 41d, a third portion 42c connecting the fifth sensor detection portion 41e and the sixth sensor detection portion 41f, and a fourth portion 42d connecting the first portion 42a, the second portion 42b and the third portion 42c and extending downward.

[0035] The control device 50, as shown in Figs. 2 and 5, is a device that processes the biosignals detected by the biosensors 30 and 40, and is attached to the bottom surface of the pan frame 12 via a holder (not shown). In detail, as shown in FIG. 6, the control device 50 has a communication unit 51 for receiving the bio-signals detected by the bio-sensors 30, 40 and wirelessly transmitting them to the outside, and a control unit 52 that performs processing to transmit the bio-signals detected by the bio-sensors 30, 40 to the communication unit 51.

[0036] The communication unit 51 uses wireless communication technology to connect to an external terminal, for example, a tablet terminal, a smartphone, a computer such as a PC, or an electric device, and transmits and receives electric signals (data signals). The control unit 52 corresponds to a microcomputer and performs overall electrical control. The control device 50 is supplied with power from a power source P mounted within the vehicle. The control device 50 may be attached inside the vehicle seat S or outside the vehicle seat S.

[0037] In the above configuration, for example, the control device 50 is connected to a publicly known heart rate measuring device (not shown) via a network, so that the heart rate measuring device can measure the heart rate of the occupant based on the respiratory signals of the occupant transmitted from the biosensors 30 and 40, and can quickly alert the occupant if any abnormal changes occur in the heart rate. As for a specific method for calculating the heart rate based on a respiratory signal, a known calculation method (for example, the calculation method described in JP 2015-123359 A) can be used, and a detailed description thereof will be omitted.

[0038] In addition, the "type of biosensor" can be changed according to the needs of the seat occupant, and the "output function" based on the bioinformation detected by the biosensor can be changed. Specifically, in addition to a pressure sensor, a capacitance sensor, a temperature sensor, a sound sensor, a light sensor, an odor sensor, an acceleration sensor, etc. may be used. In addition, the "output function" is expected to include measuring changes in the occupant's heart rate and notifying the occupant of abnormal heart rate (drowsy state), measuring the occupant's sitting posture and controlling the seat movement to create a relaxation mode or a skeletal correction mode, and playing games or watching videos for the occupant based on the occupant's biometric information (e.g., electrocardiogram, blood pressure, body temperature, breathing, etc.). In this case, it is preferable that the biometric information obtained by the biometric sensor is used by a dedicated app downloaded to the seat occupant's mobile device M. In this way, the biometric information can be used to operate the dedicated app, and the biometric information can be stored in the dedicated app.

[0039] <Details of decorative stitching> The decorative stitch portion 60 is a decorative portion formed on the surface of the covering material 1b of the seat cushion 1 and the surface of the covering material 2b of the seat back 2, as shown in Figs. 1, 3 and 4, respectively. More specifically, the decorative stitch portion 60 is a decorative stitch formed by partially sewing the covering materials 1b, 2b with thread.

[0040] As shown in FIG. 3, the decorative stitch portion 60 has a first stitch portion 61, a second stitch portion 62, and a third stitch portion 63 on the seat cushion 1, and is disposed between the left and right skin hanging grooves 1aa in the seat width direction, and each extends longitudinally along the seat width direction on the seating surface. The first stitch portion 61 is disposed at a position further forward of the seat than the second stitch portion 62. The second stitch portion 62 is disposed at a position further forward of the seat than the third stitch portion 63. The stitch portions 61, 62, 63 are disposed between the left and right skin hanging grooves 1aa in the seat width direction.

[0041] The stitch portions 61, 62, and 63 are arranged in parallel. The third sensor detection portion 41c and the fourth sensor detection portion 41d are disposed at a central position between the first stitch portion 61 and the second stitch portion 62 which are disposed in parallel. The fifth sensor detection portion 41e and the sixth sensor detection portion 41f are disposed at positions shifted from the center position between the second stitch portion 62 and the third stitch portion 63 which are disposed in parallel.

[0042] As shown in FIG. 4, the decorative stitch portion 60 has a fourth stitch portion 64, a fifth stitch portion 65, and a sixth stitch portion 66 in the seat back 2, and is disposed between the left and right skin hanging grooves 2aa in the seat width direction, and each extends longitudinally along the seat width direction on the seating surface.

[0043] In the above configuration, the sensor detection portions 31 are disposed at different positions in the seat front-rear direction as shown in Fig. 3. The third sensor detection portion 31c (fourth sensor detection portion 31d) is disposed between the first stitch portion 61 and the second stitch portion 62 in the seat front-rear direction. Therefore, the sensing performance of the biosensor 30 can be ensured.

[0044] In the above configuration, the transmission path (first transmission path 32) extends so as to straddle the decorative stitch portion 60 (61 to 63). This is because the first transmission path 32 does not affect the sensing performance even if it straddles the decorative stitch section 60, unlike the sensor detection section 31. This ensures the degree of freedom in the arrangement of the first transmission path 32 and the decorative stitch section 60.

[0045] In the above-described configuration, the sensor insertion holes 1ab are disposed on the seating surface of the seat cushion 1 between the plurality of sensor detection portions 31 in the seat width direction and the front-rear direction. Therefore, the sensing performance is not affected. Also, the transmission line for connecting the sensor detection unit 31 and the control device 50 can be arranged in a simple form.

[0046] In the above-described configuration, the sensor insertion hole 1ab is disposed at a position on the seating surface of the seat cushion 1 that overlaps with the decorative stitch portion 60. This is because the sensing performance is not affected even if the sensor insertion hole 1ab is arranged so as to overlap the decorative stitch portion 60, unlike the sensor detection portion 31. This ensures the degree of freedom in the arrangement of the sensor insertion hole 1ab and the decorative stitch portion 60.

[0047] 5, in the above configuration, the sensor insertion hole 1ab is disposed between the multiple elastic springs 14 in the seat width direction. The sensor detection unit 31 is disposed at a position overlapping with the elastic springs 14 in the up-down direction. Therefore, it is possible to prevent the transmission path (second transmission path 33) from interfering with the elastic spring 14, and to suppress deformation and displacement of the second transmission path 33. In addition, it is possible to ensure the sensing performance of the biosensor 30 in a suitable manner.

[0048] 2 and 4, the sensor detection unit 41 is disposed at a position overlapping with the elastic wire 24 and the support plate 25 in the seat front-rear direction. Therefore, the sensing performance of the biosensor 40 can be suitably ensured.

[0049] <Biosensor and decorative stitch placement pattern> Next, a modified example 1-5 of the layout pattern of the biosensor and the decorative stitch portion will be described with reference to Figs. 7A to 7D and 8. It should be noted that the description of the same contents as those of the biosensors 30, 40 and decorative stitch section 60 described above will be omitted.

[0050] Modification 1 shown in FIG. 7A is an arrangement pattern of the biosensor 30 and the decorative stitch portion 60 in the seat cushion 1, and the position of the sensor insertion hole 1ab is different from that in FIG. That is, the sensor insertion hole 1ab is disposed at a position different from the sensor detection portion 31 and also at a position different from the decorative stitch portion 60. Further, the sensor detection unit 31 is disposed adjacent to the decorative stitch unit 60 . The above-mentioned configuration also ensures close contact between the seat occupant and the biosensor, and also makes it possible to improve the design by providing decorative stitching.

[0051] Variation example 2 shown in Figure 7B is an arrangement pattern of the biosensor 30 and the decorative stitch portion 60 in the seat cushion 1, and compared to Figure 3, it does not have a sensor insertion hole 1ab, and the transmission path (first transmission path 32) extends behind the seat. That is, the biosensor 30 has, as a first transmission path 32, a first portion 32a connecting the first sensor detection portion 31a and the second sensor detection portion 31b, a second portion 32b connecting the third sensor detection portion 31c and the fourth sensor detection portion 31d, a third portion 32c connecting the fifth sensor detection portion 31e and the sixth sensor detection portion 31f, and a fourth portion 32d connecting the first portion 32a, the second portion 32b, and the third portion 32c and extending toward the rear of the seat. The second transmission path 33 extends downward continuously from the first transmission path 32, and the extending portion is bent forward of the seat and extends further toward the pan frame 12 and is connected to the control device 50.

[0052] Variation example 3 shown in Figure 7C is an arrangement pattern of the biosensor 30 and the decorative stitch portion 60 in the seat cushion 1, and compared to Figure 3, it does not have a sensor insertion hole 1ab, and the transmission paths (first transmission paths 32) each extend behind the seat. That is, the biosensor 30 is made up of four sensors, including left and right front biosensors 30a arranged in the center of the seat cushion 1 and left and right rear biosensors 30b arranged in the rear of the seat cushion 1. The four first transmission paths 32 each extend rearward of the seat. The second transmission path 33 extends downward with the four first transmission paths 32 bundled together, and the extending portion further extends toward the front of the seat and is connected to the control device 50.

[0053] Variation 4 shown in Fig. 7D is an arrangement pattern of the biosensor 30 and the decorative stitch portion 60 in the seat cushion 1, and is different from Fig. 3 in the position of the sensor insertion hole 1ab and in the pattern of the transmission path (first transmission path 32). Also, the pattern of the decorative stitch portion 60 is different. That is, the biosensor 30 has a T-shaped front biosensor 30a disposed in the center of the seat cushion 1, and a substantially T-shaped rear biosensor 30b disposed in the rear portion of the seat cushion 1. The sensor insertion hole 1ab is disposed between the front biosensor 30a and the rear biosensor 30b. In addition, in the decorative stitch portion 60, a third stitch portion 63 extends continuously from the second stitch portion 62 toward the rear of the seat. The second stitch portion 62 and the third stitch portion 63 are disposed so as to intersect. The sensor detection unit 31 is disposed at a position away from the intersection of the second stitch portion 62 and the third stitch portion 63. The sensor detection unit 31 is also disposed between each of the stitch portions 61, 62, and 63.

[0054] A fifth modified example shown in FIG. 8 is an arrangement pattern of the biosensor 40 and the decorative stitch portion 60 on the seat back 2, and the pattern of the decorative stitch portion 60 is different from that of FIG. That is, the decorative stitch portion 60 has a fourth stitch portion 64, a fifth stitch portion 65, and a sixth stitch portion 66, and the fourth stitch portion 64 extends downward continuously from the fifth stitch portion 65. In other words, the fourth stitch portion 64 extends in the up-down direction so as to overlap with the first transmission path 42.

[0055] Even with the configurations of the above-mentioned modified examples 1 to 5, it is possible to ensure close contact between the seated occupant and the biosensor. Also, the decorative stitching portion 60 can enhance the design.

[0056] <Other embodiments> In the above embodiment, as shown in FIG. 3, the sensor detection portion 31 (31a to 31f) is disposed at a position on the seating surface of the seat cushion 1 that avoids the decorative stitch portion 60, but this can be changed without any particular limitation. For example, it is sufficient that at least one sensor detection unit 31 is disposed so as to avoid the decorative stitch portion 60, and the remaining sensor detection units 31 may be disposed in positions that overlap the stitch portion.

[0057] In the above embodiment, as shown in FIG. 3, the skin material 1b (2b) has a decorative stitched portion 60 formed by partially sewing the surface of the skin material 1b (2b), but the decorative portion may be decorated by a method other than the stitched portion. Furthermore, the decorative stitch portion 60 (decorative portion) may have a curved or bent shape relative to the surface of the skin material 1b.

[0058] In the above embodiment, a vehicle seat used in an automobile has been described as a specific example, however, without being limited thereto, the present invention can be used for various seats such as two-wheeler seats, vehicle seats for trains and buses, seats for vehicles such as airplanes and ships, as well as office chairs for work, wheelchairs, and child seats in shopping carts.

[0059] In this embodiment, the vehicle seat according to the present invention has been mainly described. However, the above embodiment is merely an example for facilitating understanding of the present invention, and is not intended to limit the present invention. The present invention can be modified or improved without departing from the spirit of the present invention, and the present invention naturally includes equivalents thereof. [Explanation of symbols]

[0060] S Vehicle seat Sa seat frame 1 seat cushion 1A Center of cushion 1B Cushion side part 1a, 2a Cushioning material 1aa, 2aa Skin hanging groove 1ab Sensor insertion hole 1b, 2b Skin material 2 Seat back 2A Cushion center 2B Cushion side part 3 Headrest 4 Reclining device 5 Height link device 6 Rail device 10 Cushion Frame 11 Cushion side frame 12 Pan Frame 13 Rear connecting frame 14 Elastic spring (elastic support member) 20 Back Frame 21 Backside Frame 22 Upper Frame 23 Lower frame 24 Elastic wire (wire material) 25 Support Plate 30 Biometric Sensors 30a Front biosensor (first biosensor) 30b Rear biosensor (second biosensor) 31 Sensor detection unit 31a to 31f 1st to 6th sensor detection units 32 First Transmission Line 32a~32e Parts 1~5 33 Second Transmission Line 33a Part 1 33b Part 2 40 Biometric Sensors 41 Sensor detection unit 41a to 41f 1st to 6th sensor detection units 42 First Transmission Line 42a~42d Parts 1~4 43 Second Transmission Line 50 Control device 51 Communications Department 52 Control section 60 Decorative stitching section (decorative section) 61~66 1st~6th stitch section M Mobile Device P power supply

Claims

1. A vehicle seat including a cushion material, a cover material covering the cushion material, and a biosensor attached between the cushion material and the cover material and configured to detect a biosignal of a seated occupant, the upholstery material has a decorative portion formed on a surface of the upholstery material in the seating surface of the vehicle seat, the biosensor has a plurality of sensor detection units that detect biosignals of the seated occupant, The decorative portion is formed in plurality on the seating surface, and each decorative portion extends elongately in a predetermined direction. A vehicle seat, characterized in that the sensor detection portions are provided alternately with the decorative portions in a predetermined direction of the vehicle seat, and are positioned so as to avoid the decorative portions.

2. the sensor detection portions and the decorative portions are provided alternately in the front-rear direction of the vehicle seat, the sensor detection unit is disposed at one end of the vehicle seat in the front-rear direction, 2. The vehicle seat according to claim 1, wherein the decorative portion is disposed at the other end of the vehicle seat in the front-rear direction.

3. A vehicle seat including a cushion material, a cover material covering the cushion material, and a biosensor attached between the cushion material and the cover material and configured to detect a biosignal of a seated occupant, the upholstery material has a decorative portion formed on a surface of the upholstery material in the seating surface of the vehicle seat, the biosensor has a plurality of sensor detection units that detect biosignals of the seated occupant, The decorative portion is formed in plurality on the seating surface, and each decorative portion extends elongately in a predetermined direction. a control device that processes the biological signal detected by the biological sensor; the biosensor includes a plurality of transmission lines that electrically connect the plurality of sensor detection units and the control device and extend long in a predetermined direction; The vehicle seat is characterized in that the transmission paths are provided alternately with the decorative portions in the front-to-rear direction or the up-to-down direction of the seat, and are positioned so as to avoid the decorative portions.

4. A vehicle seat including a cushion material, a cover material covering the cushion material, and a biosensor attached between the cushion material and the cover material and configured to detect a biosignal of a seated occupant, the upholstery material has a decorative portion formed on a surface of the upholstery material in the seating surface of the vehicle seat, the biosensor has a plurality of sensor detection units that detect biosignals of the seated occupant, The decorative portion extends longitudinally in the seat front-rear direction, a control device that processes the biological signal detected by the biological sensor; The biological sensor includes a transmission path extending in a front-rear direction of the seat to electrically connect the plurality of sensor detection units and the control device, The vehicle seat is characterized in that the transmission path and the decorative portion each extend in the front-to-rear direction of the seat and are arranged so as to be parallel and overlapping in a top view.

5. A vehicle seat including a cushion material, a cover material covering the cushion material, and a biosensor attached between the cushion material and the cover material and configured to detect a biosignal of a seated occupant, the upholstery material has a decorative portion formed on a surface of the upholstery material in the seating surface of the vehicle seat, the biosensor has a plurality of sensor detection units that detect biosignals of the seated occupant, The decorative portion extends longitudinally in the seat up-down direction, a control device that processes the biological signal detected by the biological sensor; The biosensor includes a transmission path extending in the up-down direction of the seat to electrically connect the plurality of sensor detection units and the control device, The vehicle seat is characterized in that the transmission path and the decorative portion each extend in the vertical direction and are arranged so as to be parallel and overlapping when viewed from the front of the seat.

6. A vehicle seat including a cushion material, a cover material covering the cushion material, and a biosensor attached between the cushion material and the cover material and configured to detect a biosignal of a seated occupant, the upholstery material has a decorative portion formed on a surface of the upholstery material in the seating surface of the vehicle seat, the biosensor has a sensor detection unit that detects a biosignal of the seated occupant, The decorative portion is formed in plurality on the seating surface, and each decorative portion extends elongately in a predetermined direction. The decorative part is a first decorative portion formed to divide the seating surface in the front-rear direction of the seat; a second decorative portion formed to divide the seating surface in the seat width direction, A vehicle seat characterized in that the sensor detection portion and the intersection of the first decorative portion and the second decorative portion are positioned at a position that avoids overlapping when viewed from above the seat.

7. A vehicle seat including a cushion material, a cover material covering the cushion material, and a biosensor attached between the cushion material and the cover material and configured to detect a biosignal of a seated occupant, the upholstery material has a decorative portion formed on a surface of the upholstery material in the seating surface of the vehicle seat, the biosensor has a sensor detection unit that detects a biosignal of the seated occupant, The decorative portion is formed in plurality on the seating surface, and each decorative portion extends elongately in a predetermined direction. The decorative part is a first decorative portion formed to divide the seating surface in the seat up-down direction; a second decorative portion formed to divide the seating surface in the seat width direction, A vehicle seat characterized in that the sensor detection portion and the intersection of the first decorative portion and the second decorative portion are positioned at a position that avoids overlapping when viewed from the front of the seat.

8. A vehicle seat comprising a cushioning material, a skin covering the cushioning material, and a biosensor attached between the cushioning material and the skin for detecting a biosignal of a seated person, the upholstery material has a decorative portion formed on a surface of the upholstery material in the seating surface of the vehicle seat, the biosensor has a sensor detection unit that detects a biosignal of the seated occupant, The sensor detection unit is disposed at a position on the seating surface that avoids the decorative part, a control device that processes the biological signal detected by the biological sensor; the biosensor includes a transmission path for electrically connecting the sensor detection unit and the control device; The vehicle seat is characterized in that the transmission path is connected to the plurality of sensor detection units on the surface of the cushion material and extends across the decorative portion.

9. A vehicle seat comprising a cushioning material, a skin covering the cushioning material, and a biosensor attached between the cushioning material and the skin for detecting a biosignal of a seated person, the upholstery material has a decorative portion formed on a surface of the upholstery material in the seating surface of the vehicle seat, the biosensor has a sensor detection unit that detects a biosignal of the seated occupant, The sensor detection unit is disposed at a position on the seating surface that avoids the decorative part, a control device that processes the biological signal detected by the biological sensor; the biosensor includes a transmission path for electrically connecting the sensor detection unit and the control device; the sensor detection unit is attached to a surface side of the cushion material, The control device is attached to the back surface side of the cushion material, the cushion material is provided at a position on the seating surface different from the sensor detection portion, and has a sensor insertion hole that penetrates the cushion material in a thickness direction and through which the transmission path is inserted, the transmission line connects the sensor detection unit and the control device while passing through the sensor insertion hole, A vehicle seat characterized in that the sensor insertion hole is arranged between the plurality of sensor detection units in the seat width direction or in a direction intersecting the seat width direction on the seating surface, and is arranged in a position on the seating surface that overlaps with the decorative portion.

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