Vehicle seat

Abstract

To provide a vehicle seat capable of ensuring adhesion between a seated person and a biosensor.SOLUTION: A vehicle seat S comprises: a seat body seated with a seated person; a biological sensor 40 that is attached to an inside of the seat body and has a sensor detection portion 41 for detecting biological signals of the seated person; and a movable member 70 that is attached to the inside of the seat body and that can move so as to move a side portion of the seat body to a "protruding position" which protrudes toward the seated person from a "normal position". The biosensor 40 is arranged on a front surface side of the seat body with respect to the movable member 70. The sensor detection portion 41 and the movable member 70 are arranged at positions where they overlap in a protruding direction of the movable member 70.SELECTED DRAWING: Figure 7B

Description

Technical Field

[0001] The present invention relates to a vehicle seat, and more particularly to a vehicle seat that is attached inside a seat body and includes a biological sensor for detecting a biological signal of a seated person.

Background Art

[0002] Conventionally, a vehicle seat having a function of measuring a driver's biological information during vehicle driving is known. For example, a seat having a function of measuring a driver's heart rate using a biological sensor that detects a driver's biological signal and quickly notifying the driver when an abnormality occurs in the change of the heart rate is known (specifically, see Patent Document 1). In addition, a seat having a function of estimating a driver's physical condition using a biological sensor that detects a driver's sitting posture, controlling the seat movement of the seat according to the estimation result, and recovering the driver from a fatigued state is known (specifically, see Patent Document 2).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in vehicle seats such as Patent Documents 1 and 2, it has been required to ensure the adhesion between the driver and the biological sensor regardless of the driver's physique and to suitably ensure the sensing performance of the biological sensor. For example, among the vehicle seats, there is a seat provided with a movable member that moves between a normal position of a part of the seat body (for example, the side part) and a protruding position protruding toward the seated person side from the normal position. It has been required to improve the sensing performance of the biological sensor by using the movable member.

[0005] The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle seat capable of ensuring close contact between a seated person and a biological sensor. Another object of the present invention is to provide a vehicle seat capable of improving the sensing performance of a biological sensor by using existing components.

Means for Solving the Problems

[0006] According to the vehicle seat of the present invention, the above problems are solved by a seat body on which a seated person sits, a biological sensor attached inside the seat body and having a sensor detection unit for detecting a biological signal of the seated person, and a movable member attached inside the seat body and movable for moving a part of the seat body between a normal position and a protruding position protruding toward the seated person side from the normal position. The seat body has a main body part located at the center in the seat width direction and left and right side parts located outside the main body part in the seat width direction. The seat body has a seat frame serving as a skeleton. The seat frame has side frames arranged on the left and right sides, a latching part latched to the left and right side frames, and a planar part held by the latching part and supporting the seated person. Support plate The biological sensor is arranged on the surface side of the seat body rather than the movable member, and the sensor detection unit and the movable member are Via the cushioning material of the seat body arranged at positions overlapping in the protruding direction of the movable member, and the Support plateis disposed on the main body portion of the seat body, the movable member is disposed on the side portion, and the inner end portion of the biological sensor in the seat width direction is disposed closer to the center in the seat width direction than the inner end portion of the side frame in the seat width direction, thereby solving the problem. With the above configuration, it is possible to realize a vehicle seat capable of ensuring close contact between the seated person and the biological sensor (sensor detection unit). Specifically, the sensor detection unit and the movable member are disposed at positions overlapping in the protruding direction of the movable member. Therefore, the sensor detection unit can be preferably supported by the movable member, and close contact between the seated person and the biological sensor can be ensured. Also, with the above configuration, it is possible to realize a vehicle seat capable of enhancing the sensing performance of the biological sensor by using an existing component (movable member).

[0007] At this time, the seat body The is configured by placing a cushion material on a seat frame and covering it with a skin material. The biological sensor is attached between the cushion material and the skin material, the movable member is attached to the seat frame, and it is preferably disposed on the back surface side of the cushion material. With the above configuration, the biological sensor and the movable member can be attached with a simple configuration.

[0008] At this time, Front the movable member moves to move the side portion in the seat body, and a plurality of the sensor detection units are arranged at intervals in a predetermined direction in the side portion. It is preferable that the plurality of sensor detection units and the movable member are arranged at positions overlapping in the protruding direction of the movable member. With the above configuration, the movable member can preferably support the plurality of sensor detection units, and close contact between the seated person and the biological sensor can be ensured.

[0009] At this time, the movable member has a bag body that bulges when fluid is enclosed therein, and the vehicle seat is attached to the seat frame and further includes a fluid supply device that supplies fluid to the bag body, which is preferable. Also, The folded bag body has a vertex at a position away from the seated person in the sheet width direction, and has a shape with a long side at a position opposite to the vertex is preferable. With the above configuration, by bulging the bag body (air cell) according to the physique of the seated person, a part (side part) of the seat body can be preferably protruded toward the seated person side. As a result, the holdability of the seated person can be enhanced. Further, the sensor detection part can be more preferably supported by the movable member, and the close contact property between the seated person and the biological sensor can be ensured.

[0010] At this time, the seat body has a seat cushion that serves as a seating part, the vehicle seat is attached inside the seat cushion, and includes a second movable member that moves to protrude the front cushion part of the seat cushion forward, and the biological sensors are arranged in a plurality at intervals in the seat width direction at the front cushion part, and it is preferable that the plurality of sensor detection parts and the second movable member are arranged at positions overlapping in the protruding direction of the second movable member. Upper With the above configuration, the sensor detection part can be more preferably supported by the second movable member, and the close contact property between the legs of the seated person and the biological sensor can be ensured. 。

[0011] At this time, on the surface of the cushion material, skin suspension grooves for suspending the terminals of the skin material are formed, the skin suspension grooves are arranged on the left and right sides in the seat width direction, and each extends longitudinally along a direction intersecting the seat width direction, and it is preferable that the plurality of sensor detection parts are arranged outside the skin suspension grooves in the seat width direction. With the above configuration, it is possible to avoid the influence on the sensing performance of the biological sensor due to the relationship with the skin suspension groove.

[0012] At this time, a control device for processing the biological signal detected by the biological sensor is provided. The biological sensor includes a sensor detection unit and a transmission line for electrically connecting the sensor detection unit and the control device. The transmission line is connected to a plurality of the sensor detection units on the surface of the cushion material and preferably extends avoiding the epidermal hanging groove. With the above configuration, it is possible to avoid the transmission line interfering with the epidermal hanging groove, and to suppress deformation and displacement of the transmission line. As a result, the sensing performance of the biological sensor can be suitably ensured.

[0013] At this time, the seat body has a seat cushion, the biological sensor is attached to the cushion side portion of the seat cushion, a plurality of the sensor detection units are arranged at intervals in the front-rear direction of the seat on the surface side of the cushion material, the control device is attached to the back side of the cushion material, the cushion material is provided at a position different from the sensor detection unit, and has an insertion hole for penetrating in the thickness direction of the cushion material and inserting the transmission line. The transmission line preferably connects the sensor detection unit and the control device while passing through the insertion hole. With the above configuration, the transmission line for connecting the sensor detection unit and the control device in the seat cushion can be extended in a simple form. Further, the seat body has a seat cushion and a seat back, the vehicle seat includes a reclining device that connects the seat back to the seat cushion so as to be relatively rotatable, and the back frame that forms the skeleton of the seat back has a back side frame disposed on the left and right sides and an upper frame that connects the upper end portions of the left and right back side frames. The movable member has a first movable member and a second movable member respectively disposed on the front surfaces of the left and right back side frames, and a third movable member and a fourth movable member disposed on the front surfaces of the left and right ends of the upper frame. The sensor detection part disposed at a position overlapping the third movable member in the protruding direction of the third movable member and the sensor detection part disposed at a position overlapping the fourth movable member in the protruding direction of the fourth movable member are preferably disposed on a common transmission path

Advantages of the Invention

[0014] According to the present invention, it is possible to realize a vehicle seat capable of ensuring the adhesion between the seated person and the biological sensor (sensor detection unit). Specifically, the sensor detection unit can be suitably supported by the movable member, and the adhesion between the seated person and the biological sensor can be ensured. In addition, it is possible to improve the sensing performance of the biological sensor by using existing components (movable members). Also according to the present invention, the biological sensor and the movable member can be attached with a simple configuration. Further, according to the present invention, a plurality of sensor detection units can be preferably supported by the movable member, and the close contact between the seated person and the biological sensor can be ensured. Further, according to the present invention, by expanding the bag body (air cell) according to the physique of the seated person, a part (side part) of the seat body can be preferably protruded toward the seated person side. As a result, the holding property of the seated person can be enhanced. Further, according to the present invention, the sensor detection unit can be more preferably supported by the second movable member, and the close contact between the legs of the seated person and the biological sensor can be ensured. Further, according to the present invention, the protruding amount of the leg support member can be adjusted according to the physique of the seated person. As a result, the holding property of the seated person can be enhanced. Further, according to the present invention, it is possible to avoid the influence on the sensing performance of the biological sensor due to the relationship with the epidermis hanging groove. Further, according to the present invention, it is possible to avoid the interference of the transmission path with the epidermis hanging groove, and suppress the deformation and displacement of the transmission path. As a result, the sensing performance of the biological sensor can be preferably ensured. Further, according to the present invention, the transmission path for connecting the sensor detection unit and the control device in the seat cushion can be extended in a simple form.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7A

Figure 7B

Figure 8

Mode for Carrying Out the Invention

[0016] Hereinafter, embodiments according to the present invention will be described with reference to FIGS. 1-8. This embodiment is a vehicle seat including a seat body on which a seated person sits, a biological sensor having a sensor detection unit attached inside the seat body for detecting a biological signal of the seated person, and a movable member attached inside the seat body and movable to move a part of the seat body to a "projected position" protruding toward the seated person side from the "normal position". The biological sensor is disposed on the surface side of the seat body with respect to the movable member, and the main feature is that the sensor detection unit and the movable member are disposed at positions overlapping in the protruding direction of the movable member. Note that the side on which the seated person sits with respect to the seat back of the vehicle seat is the front side of the seat.

[0017] The vehicle seat S of this embodiment is, as shown in FIG. 1, a vehicle seat, and mainly includes a seat body including a seat cushion 1, a seat back 2, and a headrest 3, seat-shaped biological sensors 30 and 40 attached inside the seat body for detecting an electrical signal (biological signal) corresponding to the bioelectric potential of the seated person sitting on the seat body, and a control device 50 that receives the biological signal detected by the biological sensors 30 and 40 and transmits the received biological signal to the outside (for example, a mobile terminal M owned by the seated person). In addition, the vehicle seat S includes a movable member 60 (a bag body) that is attached inside the seat body and is movable to move the side portion of the seat body between a "normal position" and a "projected position" that projects more toward the occupant side than the normal position, and an operating device 80 (a fluid supply device) that operates to move the movable member 60.

[0018] As shown in FIGS. 1 and 3, the seat cushion 1 is a seating portion that supports the occupant from below, and is configured by placing a cushion material 1a on a cushion frame 10 shown in FIG. 2 that serves as a skeleton and covering it with a skin material 1b. The cushion material 1a is a pad member made of foamed urethane or the like, and is composed of a cushion central portion 1A in the central portion in the seat width direction and left and right cushion side portions 1B (side bolster portions) outside the cushion central portion in the seat width direction. On the surface of the cushion material 1a, left and right skin suspension grooves 1aa extending in the seat front-rear direction are formed so as to divide the cushion central portion 1A and the left and right cushion side portions 1B. In addition, sensor insertion holes 1ab, 1ac, 1ad, and 1ae are formed through the cushion material 1a in the thickness direction at the central portion of the cushion central portion 1A and the central portions of the left and right cushion side portions 1B to allow a part of the biological sensor 30 to pass through. Note that a cushion recess corresponding to the outer shape of the biological sensor 30 may be formed in a portion of the surface of the cushion material 1a that faces the biological sensor 30 in order to ensure the seating feeling.

[0019] As shown in FIGS. 1 and 4, the seat back 2 is a backrest portion that supports the occupant's back from behind, and is configured by placing a cushion material 2a on a back frame 20 shown in FIG. 2 that serves as a skeleton and covering it with a skin material 2b. The cushion material 2a is composed of a cushion central portion 2A in the central portion in the seat width direction and left and right cushion side portions 2B outside the seat width direction. On the surface of the cushion material 2a, left and right skin suspension grooves 2aa extending in the vertical direction are formed so as to divide the cushion central portion 2A and the left and right cushion side portions 2B.

[0020] As shown in FIG. 2, the cushion frame 10 is composed of a substantially rectangular frame body, and includes cushion side frames 11 arranged on the left and right sides, a plate-shaped pan frame 12 (erection frame) erected at the front end portions of the respective cushion side frames 11, a rear connection frame 13 connecting the rear portions of the respective cushion side frames 11, and a plurality of elastic springs 14 (elastic support members) that are hooked to the pan frame 12 and the rear connection frame 13 and extend in a serpentine shape in the front-rear direction of the seat. A control device 50, a movable member 60, and an operating device 80 are attached to the cushion frame 10.

[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 the lower portion thereof via a height link device 5.

[0022] The pan frame 12 is a frame that supports the thighs of the seated person, and is composed of a rectangular plate body. Both end portions in the seat width direction are placed and attached on the upper surface of the cushion side frame 11. The elastic spring 14 is an elastic support member that supports the buttocks of the seated person, and a plurality of them are provided at predetermined intervals in the seat width direction. The front end portion of the elastic spring 14 is hooked to the edge of a hooking hole (not shown) formed on the upper surface of the pan frame 12, and the rear end portion thereof is hooked to the rear connection frame 13 via a hook member (not shown).

[0023] As shown in Fig. 2, the back frame 20 is mainly composed of a substantially rectangular frame-shaped body, including backside frames 21 arranged on the left and right sides, an inverted U-shaped upper frame 22 connecting the upper end portions of the respective backside frames 21, a plate-shaped lower frame 23 connecting the lower end portions of the respective backside frames 21, a plurality of elastic wires 24 (wire members) respectively hooked on the respective backside frames 21 and extending in a serpentine shape in the sheet width direction, and a support plate 25 held by the plurality of elastic wires 24 and supporting the seated person. A movable member 60 and an operating device 80 are attached to the back frame 20.

[0024] The backside frame 21 is a sheet metal member extending in the vertical direction and having a substantially C-shaped cross section, and its lower end portion is connected to the rear end portion of the cushion side frame 11 via the reclining device 4. In the above configuration, the back frame 20 can rotate relative to the cushion frame 10.

[0025] As shown in Figs. 1 and 3, the biological sensor 30 is a sheet-shaped pressure sensor that detects the seating pressure applied to the seating surface of the seat cushion 1 when the seated person sits on the seat, and is attached between the cushion material 1a and the skin material 1b. Specifically, it is attached to the central portion of the cushion central portion 1A, the central portions of the left and right cushion side portions 1B, and the front portion (front surface portion) of the cushion central portion 1A, respectively. Also, as shown in Fig. 4, the biological sensor 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. Specifically, it is attached to the central portion of the cushion central portion 2A, the central portions of the left and right cushion side portions 2B, and the upper end portions (shoulder portions) of the left and right cushion side portions 2B, respectively. Here, the "seating pressure" is a value that changes periodically according to the physiological activities of the seated person, specifically breathing, in the state where the seated person is sitting on the seat cushion 1, and is the target value detected by the pressure sensor.

[0026] As shown in FIG. 3, the biological sensor 30 includes a plurality of sensors, including a front biological sensor 30a disposed at the center of the central portion 1A of the cushion, a rear biological sensor 30b disposed at the rear portion of the central portion 1A of the cushion, a right biological sensor 30c and a left biological sensor 30d respectively disposed on the left and right cushion side portions 1B, and a front biological sensor 30e disposed at the front portion of the central portion 1A of the cushion. The biological sensors 30a to 30d are respectively disposed at positions corresponding to the position of the hip point of the seated person or positions near the hip point. The front biological sensor 30e is disposed at a position corresponding to the position of the leg of the seated person or a position near the leg. Each of them independently detects the seating pressure and outputs a detection signal based on the detection result of the seating pressure.

[0027] As shown in FIGS. 3 and 5, the biological sensors 30a to 30e include a sensor detection unit 31 for detecting the seating pressure applied by the seated person, and transmission paths (first transmission path 32, 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 adhered onto the conductive sheet. The first transmission path 32 is formed by adhering a conductive wire serving as a transmission path onto the conductive sheet. The second transmission path 33 is composed of a first portion 33a in which conductive wires are adhered onto the conductive sheet and a second portion 33b in which the conductive wires are bundled to form a wire harness. And in order to connect the first transmission path 32 and the control device 50, it extends through the sensor insertion holes 1ab (1ac to 1ae) of the cushion material 1a.

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

[0029] Further, the front biological sensor 30a has, as the first transmission path 32, a first portion 32a connecting the first sensor detection unit 31a and the second sensor detection unit 31b, a second portion 32b connecting the third sensor detection unit 31c and the fourth sensor detection unit 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 along the seat width direction. The third portion 32c extends along the front-rear direction of the seat.

[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 arranged at the same position (overlapping position) in the front-rear direction of the seat and are arranged at different positions in the seat width direction. Further, the rear biological sensor 30b has, as the first transmission path 32, a fourth portion 32d connecting the fifth sensor detection unit 31e and the sixth sensor detection unit 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 front-rear direction of the seat.

[0031] In the above configuration, as shown in FIG. 5, the first portion 33a of the second transmission path 33 extends continuously downward from the first transmission path 32 and bends to pass through the sensor insertion hole 1ab. And the second portion 33b of the second transmission path 33 bends continuously forward from the first portion 33a and further extends toward the bottom surface of the pamphlet frame 12, and the extending tip portion thereof is connected to the control device 50 via a connector.

[0032] The right biological sensor 30c has a seventh sensor detection unit 31g and an eighth sensor detection unit 31h. The seventh sensor detection unit 31g and the eighth sensor detection unit 31h are arranged at different positions in the front-rear direction of the seat and at the same position (overlapping position) in the seat width direction. Also, the right biological sensor 30c has, as a first transmission path 32, a sixth portion 32f that connects the seventh sensor detection unit 31g and the eighth sensor detection unit 31h, and a seventh portion 32g that extends from the sixth portion 32f toward the sensor insertion hole 1ac. The sixth portion 32f extends in the front-rear direction of the seat, and the seventh portion 32g extends in the seat width direction.

[0033] The left biological sensor 30d has a ninth sensor detection unit 31i and a tenth sensor detection unit 31j. The ninth sensor detection unit 31i and the tenth sensor detection unit 31j are arranged at different positions in the front-rear direction of the seat and at the same position (overlapping position) in the seat width direction. Also, the left biological sensor 30d has, as a first transmission path 32, an eighth portion 32h that connects the ninth sensor detection unit 31i and the tenth sensor detection unit 31j, and a ninth portion 32i that extends from the eighth portion 32h toward the sensor insertion hole 1ad. The eighth portion 32h extends in the front-rear direction of the seat, and the ninth portion 32i extends in the seat width direction.

[0034] In the above configuration, the first portion 33a of the second transmission path 33 extends continuously downward from the first transmission path 32 and bends to pass through the sensor insertion hole 1ac (1ad). And the second portion 33b of the second transmission path 33 bends obliquely forward of the seat continuously from the first portion 33a and further extends toward the bottom surface of the pamphlet frame 12 and is connected to the control device 50.

[0035] The front biological sensor 30e has an eleventh sensor detection unit 31k, a twelfth sensor detection unit 31l, a thirteenth sensor detection unit 31m, and a fourteenth sensor detection unit 31n. The 11th sensor detection unit 31k and the 12th sensor detection unit 31l are arranged at the same position (overlapping position) in the front-back direction of the seat, and are arranged at different positions in the seat width direction. The 13th sensor detection unit 31m and the 14th sensor detection unit 31n are arranged at a position behind the 11th sensor detection unit 31k (the 12th sensor detection unit 31l), are arranged at the same position (overlapping position) in the front-back direction of the seat, and are arranged at different positions in the seat width direction.

[0036] Further, the front biological sensor 30e has, as the first transmission path 32, a 10th portion 32j connecting the 11th sensor detection unit 31k and the 12th sensor detection unit 31l, an 11th portion 32k connecting the 13th sensor detection unit 31m and the 14th sensor detection unit 31n, a 12th portion 32l connecting the 10th portion 32j and the 11th portion 32k, and a 13th portion 32m extending from the 12th portion 32l toward the sensor insertion hole 1ae.

[0037] In the above configuration, the first portion 33a of the second transmission path 33 extends continuously downward from the first transmission path 32 and passes through the sensor insertion hole 1ae. And the second portion 33b of the second transmission path 33 extends further continuously from the first portion 33a toward the pamphlet 12, passes through a through hole (not shown) formed in the pamphlet 12, and is connected to the control device 50.

[0038] As shown in FIG. 4, the biological sensor 40 is composed of a plurality and is arranged from the central portion to the lower portion of the seat back 2. Specifically, the biological sensor 40 has a central biological sensor 40a arranged at the central portion of the cushion central portion 1A, and a right biological sensor 40b and a left biological sensor 40c respectively arranged at the left and right cushion side portions 1B. The biological sensor 40 has a sensor detection unit 41 and transmission paths (a first transmission path 42 and a second transmission path 43). The first transmission path 42 is arranged on the surface of the cushion material 2a. The second transmission path 43 extends continuously from the first transmission path 42 toward the seat cushion 1. Then, it passes through a position below the cushion material 1a and the cushion frame 10, and the extending tip thereof is connected to the control device 50 via a connector.

[0039] The central biological sensor 40a 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 unit 41a and the second sensor detection unit 41b are arranged at the same position (overlapping position) in the vertical direction and at different positions in the seat width direction. The third sensor detection unit 41c and the fourth sensor detection unit 41d are arranged at a position below the first sensor detection unit 31a (the second sensor detection unit 31b), at the same position (overlapping position) in the vertical direction, and at different positions in the seat width direction. The fifth sensor detection unit 41e and the sixth sensor detection unit 41f are arranged at a position below the third sensor detection unit 41c (the fourth sensor detection unit 41d), at the same position (overlapping position) in the vertical direction, and at different positions in the seat width direction.

[0040] Also, the central biological sensor 40a has, as the first transmission path 42, a first portion 42a connecting the first sensor detection unit 41a and the second sensor detection unit 41b, a second portion 42b connecting the third sensor detection unit 41c and the fourth sensor detection unit 41d, a third portion 42c connecting the fifth sensor detection unit 41e and the sixth sensor detection unit 41f, and a fourth portion 42d connecting the first portion 42a, the second portion 42b, and the third portion 42c and extending downward.

[0041] The right biological sensor 40b has a seventh sensor detection unit 41g, an eighth sensor detection unit 41h, and a ninth sensor detection unit 41i. The seventh to ninth sensor detection units 41g, 41h, 41i are arranged at different positions in the vertical direction and at the same position (overlapping position) in the seat width direction. Further, the right biological sensor 40b connects the seventh to ninth sensor detection units 41g, 41h, 41i and has a first transmission path 42 that extends downward from the ninth sensor detection unit 41i.

[0042] The left biological sensor 40c has a tenth sensor detection unit 41j, an eleventh sensor detection unit 41k, and a twelfth sensor detection unit 41l. The tenth to twelfth sensor detection units 41j, 41k, 41l are arranged at different positions in the vertical direction and at the same position (overlapping position) in the sheet width direction. Further, the left biological sensor 40c connects the tenth to twelfth sensor detection units 41j, 41k, 41l and has a first transmission path 42 that extends downward from the twelfth sensor detection unit 41l.

[0043] As shown in FIGS. 2 and 5, the control device 50 is a device that processes biological signals detected by the biological sensors 30 and 40, and is attached to the bottom surface of the pamphlet 12 via a holder (not shown). Specifically, as shown in FIG. 6, the control device 50 has a communication unit 51 that receives biological signals detected by the biological sensors 30 and 40 and wirelessly transmits them to the outside, and a control unit 52 that performs a process of transmitting the biological signals detected by the biological sensors 30 and 40 to the communication unit 51.

[0044] The communication unit 51 uses wireless communication technology to connect to an external terminal, such as a tablet terminal, a smartphone, a computer such as a PC, or an electrical device, and transmits and receives electrical signals (data signals). The control unit 52 corresponds to a microcomputer and comprehensively executes electrical control. The control device 50 is configured to receive power supply from a power source P mounted in the vehicle. Note that the control device 50 may be attached inside the vehicle seat S or outside the vehicle seat S.

[0045] In the above configuration, for example, by connecting the control device 50 to a known heart rate measurement device (not shown) through a network, the heart rate measurement device measures the heart rate of the seated person based on the breathing signal of the seated person transmitted from the biological sensors 30 and 40, and can quickly notify the seated person when an abnormality occurs in the change of the heart rate. Regarding the specific method of calculating the heart rate based on the breathing signal, a known calculation method (for example, the calculation method described in Japanese Patent Application Laid-Open No. 2015-123359) can be used, and specific explanations are omitted.

[0046] In addition, according to the request of the seated person, the "type of biological sensor" can be changed, and the "output function" based on the biological information detected by the biological sensor can also be changed. Specifically, in addition to the pressure sensor, an electrostatic capacitance sensor, a temperature sensor, a sound sensor, a light sensor, an odor sensor, an acceleration sensor, etc. may be adopted. In addition, as the "output function", in addition to measuring the change in the heart rate of the seated person and notifying the seated person of an abnormal heart rate (dozing state), measuring the sitting posture of the seated person to control the seat movement of the seat and creating a relaxation mode or a skeletal correction mode, and creating games or videos for the seated person based on the biological information of the seated person (for example, electrocardiogram, blood pressure, body temperature, breathing, etc.) are assumed. In that case, it is preferable that the biological information obtained by the biological sensor is used by a dedicated application downloaded to the mobile terminal M of the seated person. By doing so, the dedicated application can be operated using the biological information, and the biological information can be accumulated in the dedicated application.

[0047] <Details of the movable member> As shown in FIGS. 2, 7A, and 7B, the movable members 60 and 70 are bag bodies that bulge by enclosing a fluid. Specifically, they are air cells that bulge toward the seated person (protrude from the normal position to the protruding position) by enclosing compressed air as the fluid, and contract (return to the normal position) when the enclosed compressed air is discharged.

[0048] The movable member 60 is attached to the cushion frame 10. Specifically, it is mainly composed of a first movable member 61 and a second movable member 62 disposed on the upper surfaces of the left and right cushion side frames 11, and a third movable member 63 and a fourth movable member 64 disposed on the upper surface of the upper end portion of the pan frame 12. In other words, the first movable member 61 and the second movable member 62 are disposed inside the left and right side portions of the seat cushion 1, and are disposed on the back surfaces (bottom surfaces) of the left and right cushion side portions 1B. The third movable member 63 and the fourth movable member 64 are disposed inside the front end portion of the central portion of the seat cushion 1, and are disposed on the back surface of the front end portion of the cushion central portion 1A. Note that the movable members 61 to 64 are attached in a folded state. The first movable member 61 and the second movable member 62 have a substantially rectangular shape that is long in the front-rear direction of the seat, and the third movable member 63 and the fourth movable member 64 have a substantially pentagonal shape that is long in the width direction of the seat.

[0049] The movable member 70 is attached to the back frame 20. Specifically, it is mainly composed of a first movable member 71 and a second movable member 72 disposed on the front surfaces of the left and right back side frames 21, and a third movable member 73 and a fourth movable member 74 disposed on the front surfaces of the left and right end portions of the upper frame 22. In other words, the first movable member 71 and the second movable member 72 are disposed inside the left and right side portions of the seat back 2, and are disposed on the back surfaces (rear surfaces) of the left and right cushion side portions 2B. The third movable member 63 and the fourth movable member 64 are disposed inside the upper end portions (shoulder portions) of the left and right side portions of the seat back 2, and are disposed on the bottom surfaces of the upper end portions of the left and right cushion side portions 2B. Note that the movable members 71 to 74 are attached in a folded state. The first movable member 61 and the second movable member 62 have a substantially rectangular shape that is long in the front-rear direction of the seat, and the third movable member 63 and the fourth movable member 64 have a substantially pentagonal shape that is long in the width direction of the seat.

[0050] The movable members 60 and 70 (air cells) are members that move (bulge) to move the side portion, shoulder portion, and front end portion of the seat body from the "normal position" to a "protruding position" that protrudes toward the seated person side from the normal position. Hereinafter, the movable member 70 (third and fourth movable members 73 and 74) disposed on the shoulder portion of the seat back 2 will be described as a representative example with reference to FIGS. 7A and 7B.

[0051] FIG. 7A is a cross-sectional view of the seat back 2, showing a state where the side portion of the seat back 2 is in the "normal position". The movable member 70 is disposed between the back frame 20 and the skin material 2b in the front-rear direction of the seat. Specifically, it is attached to the front surface of the back side frame 21 and is disposed on the back surface of the cushion side portion 2B. At this time, the biological sensor 40 is disposed on the surface side (front side) of the seat body rather than the movable member 70, and it can be seen that the sensor detection unit 41 and the movable member 70 are disposed at positions overlapping in the front-rear direction of the seat (the protruding direction of the movable member 70).

[0052] Inside the seat back 2, a working device 80 (fluid supply device) for supplying compressed air to the movable member 70 (air cell) is disposed at a position rearward of the cushion material 2a (cushion central portion 2A). The working device 80 is attached to a predetermined position in the central portion of the back frame 20. Specifically, it is mainly composed of an air pump 81 capable of supplying (air supply) and discharging (exhausting) compressed air, and an air pipe 82 connecting the air pump 81 and the movable member 70.

[0053] Note that the working device 80 can supply compressed air to the movable member 70 or discharge compressed air from the movable member 70 by receiving a predetermined control signal from, for example, the control device 50. The control device 50 may receive the selection of a predetermined user operation by the seated person and transmit the above control signal. By doing so, it becomes possible to adjust the movable range of the movable member 70 according to the physique of the seated person.

[0054] FIG. 7B is a diagram showing a state in which the movable member 70 protrudes forward of the seat and the side portion of the seat back 2 has moved from the "normal position" to the "protruding position". Specifically, by receiving the supply of compressed air from the operating device 80, the folded movable member 70 bulges and unfolds forward of the seat, and the cushion side portion 2B moves forward of the seat. As a result, the side portion of the seat back 2 moves to the "protruding position". Note that, by discharging the compressed air inside the movable member 70 by the operating device 80, the bulged movable member 70 contracts, and the cushion side portion 2B descends rearward of the seat. As a result, the side portion of the seat back 2 returns from the "protruding position" to the "normal position".

[0055] In the above configuration, as shown in FIGS. 7A and 7B, the movable member 70 and the sensor detection unit 41 are arranged at positions overlapping in the protruding direction of the movable member 70 (in the front-rear direction of the seat). Also, the movable member 60 and the sensor detection unit 31 will be arranged at positions overlapping in the protruding direction of the movable member 60 (in the vertical direction). Therefore, the movable members 60 and 70 can preferably support the plurality of sensor detection units 31 and 41. As a result, the adhesion between the seated person and the biological sensors 30 and 40 can be ensured.

[0056] In the above configuration, as shown in FIG. 7B, the side portion of the seat back 2 is configured to protrude forward of the seat and inward in the seat width direction by the movable member 70. In particular, the left and right shoulders of the seat back 2 are configured to protrude forward of the seat and obliquely downward inside in the seat width direction by the third movable member 73 (fourth movable member 74). Also, the side portion of the seat cushion 1 is configured to protrude upward of the seat and inward in the seat width direction by the movable member 60. In particular, the front end portion of the central portion of the seat cushion 1 is configured to protrude forward of the seat and obliquely upward inside in the seat width direction by the third movable member 63 (fourth movable member 64). By doing so, the seating feeling of the seated person can be enhanced. Also, the adhesion between the seated person and the biological sensors 30 and 40 can be enhanced.

[0057] <Modification example of the movable member> Next, modification examples of the "movable member" and the "actuating device" will be described with reference to FIG. 8. Note that descriptions of the content overlapping with the vehicle seat S described above will be omitted. The vehicle seat S2 is attached inside the seat cushion 101 and includes a second movable member 160 that moves to project the front part of the cushion of the seat cushion 101 forward of the seat.

[0058] Specifically, the second movable member 160 is a "leg support member" that supports the legs of the seated person from below. The vehicle seat S2 further includes an actuating device 180 (specifically, an ottoman device) that moves the second movable member 160 back and forth between a "normal position" where the second movable member 160 is positioned on the seat cushion 101 side and a "projected position" where the second movable member 160 projects more forward of the seat than the normal position.

[0059] The actuating device 180 is mainly attached to the cushion frame 110 and includes an ottoman pillar 181 that supports the second movable member 160 so as to be movable back and forth, an ottoman lock member 182 that locks the back-and-forth movement of the ottoman pillar 181, and an ottoman operation lever 183 that is operated to release the locked state of the ottoman lock member 182.

[0060] As shown in FIGS. 1 and 3, the biological sensor 30 has a front biological sensor 30e disposed at the front part of the cushion of the seat cushion 101. The front biological sensor 30e has first to fourteenth sensor detection units 31k, 31l, 31m, 31n disposed at intervals in the seat width direction and the vertical direction.

[0061] In the above configuration, the plurality of sensor detection units 31 and the second movable member 160 are arranged at positions overlapping in the protruding direction of the second movable member 160 (in the front-rear direction of the seat). Specifically, it will be arranged on the front surface of the second movable member 160 (it may be arranged slightly on the upper surface). Therefore, even in the above-described modification, the sensor detection unit 31 can be preferably supported by the second movable member 160, and the close contact between the seated person and the biological sensor 30 can be ensured.

[0062] <Other alternative embodiments> In the above embodiment, as shown in FIGS. 2, 7A, and 7B, the movable members 60 and 70 are configured as a bag body (air cell), and the operating device 80 is configured as a fluid supply device, but it can be changed without particular limitation. For example, the "movable member" and the "operating device" may be configured by a mechanical mechanism as in the above-described modification. Specifically, the "movable member" may be configured to be movable by a link mechanism, a hinge mechanism, or the like, and the "operating device" may be configured by a motor-type or hydraulic drive device or the like.

[0063] In the above embodiment, as shown in FIG. 3, the right biological sensor 30c (left biological sensor 30d) is arranged on the inner surface of the side portion of the seat body (cushion side portion 1B), but it is not particularly limited and may be arranged on the outer surface of the side portion. Alternatively, it may be arranged on the front surface or the rear surface of the side portion.

[0064] In the above embodiment, as shown in FIG. 4, the right biological sensor 40b (left biological sensor 40c) is arranged on the inner surface of the side portion of the seat body (cushion side portion 2B), but it is not particularly limited and can be changed, and it may be arranged on the outer surface of the side portion. Alternatively, it may be arranged on the upper surface or the lower surface of the side portion.

[0065] In the above embodiment, as shown in FIGS. 7A and 7B, the movable member 70 is arranged on the back surface side of the cushion material 2a, but it is not particularly limited and may be arranged on the front surface side of the cushion material 2a. In addition, although the biological sensor 40 is disposed on the surface side of the cushion material 2a, it may be disposed between the cushion material 2a and the movable member 70. That is, it may be directly disposed on the surface of the movable member 70.

[0066] In the above embodiment, as shown in FIG. 3, the transmission line (first transmission line 32) is configured as a sheet-like electric circuit in which a conductive wire serving as a transmission line is adhered onto a conductive sheet, but it can be changed without particular limitation. For example, the transmission line (first transmission line 32) may be a film-like electric circuit.

[0067] In the above embodiment, as a specific example, a vehicle seat used for an automobile has been described. However, without particular limitation, in addition to a two-wheeled seat for a two-wheeled vehicle, a vehicle seat for a train, a bus, etc., a seat for a vehicle such as an airplane or a ship, it can also be used for various seats such as a work office chair, a wheelchair, a children's seat in a shopping cart, etc.

[0068] In the present embodiment, the vehicle seat according to the present invention has been mainly described. However, the above embodiment is merely an example for facilitating the understanding of the present invention and does not limit the present invention. The present invention can be changed and improved without departing from its gist, and it goes without saying that equivalents of the present invention are included therein.

Explanation of Reference Numerals

[0069] S Vehicle seat Sa Seat frame 1, 101 Seat cushion 1A Central portion of the cushion (Main body part) 1B Side portion of the cushion (Side part) 1a, 2a Cushion material 1aa, 2aa Epidermis suspension groove 1ab, 1ac, 1ad, 1ae Sensor insertion hole 1b, 2b Epidermis material 2 Seat back 2A Central part of the cushion (Main body part) 2B Side part of the cushion (Side part) 3 Headrest 4 Reclining device 5 Height link device 6 Rail device 10, 110 Cushion frame 11 Cushion side frame 12 Pan frame 13 Rear connection frame 14 Elastic spring (elastic support member , Hooking part ) 20 Back frame 21 Back side frame 22 Upper frame 23 Lower frame 24 Elastic wire (wire member, Hooking part ) 25 Support plate (Planar support part) 30, 40 Biosensor 30a Front biosensor (first biosensor) 30b Rear biosensor (second biosensor) 30c Right biosensor (third biosensor) 30d Left biosensor (fourth biosensor) 30e Frontal biosensor (fifth biosensor) 31 Sensor detection unit 31a~31n, First to fourteenth sensor detection units 32 First transmission path 32a~32m First to thirteenth parts 33 Second transmission path 33a First part 33b Second part 40 Biosensor 40a Central biosensor (fifth biosensor) 40b Right biosensor (sixth biosensor) 40c Left biosensor (seventh biosensor) 41 Sensor detection unit 41a to 41j, 1st to 10th sensor detection units 42, 1st transmission path 42a to 42d, 1st to 4th parts 43, 2nd transmission path 50, control device 51, communication unit 52, control unit 60, 70, movable members (bag body, air cell) 61, 71, 1st movable members 62, 72, 2nd movable members 63, 73, 3rd movable members 64, 74, 4th movable members 80, operating device (side movable member) 81, air pump 82, air pipe 160, 2nd movable member (foot support member) 180, operating device (ottoman device) 181, ottoman pillar 182, ottoman lock member 183, ottoman operation lever M, mobile terminal P, power supply

Claims

1. A seat body on which a seated person sits, a biological sensor attached inside the seat body and having a sensor detection unit for detecting a biological signal of the seated person, a vehicle seat provided with a movable member attached inside the seat body and movable to move a part of the seat body between a normal position and a protruding position protruding toward the seated person side from the normal position, The seat body has a main body portion located at the center in the seat width direction and left and right side portions located outside the main body portion in the seat width direction, The seat body has a seat frame serving as a skeleton, The seat frame has side frames arranged on the left and right sides, a latching portion latched to the left and right side frames, and a planar support plate held by the latching portion and supporting the seated person, The biological sensor is arranged on the surface side of the seat body with respect to the movable member, The sensor detection unit and the movable member are arranged at positions overlapping in the protruding direction of the movable member via a cushion material of the seat body, The support plate is arranged in the main body portion of the seat body, and the movable member is arranged in the side portion, A vehicle seat, characterized in that an inner end portion of the biological sensor in the seat width direction is arranged closer to the center in the seat width direction than an inner end portion of the side frame in the seat width direction.

2. The seat body is configured by placing a cushion material on the seat frame and covering it with a skin material, The biological sensor is attached between the cushion material and the skin material, The vehicle seat according to claim 1, characterized in that the movable member is attached to the seat frame and arranged on the back surface side of the cushion material.

3. The movable member is movable to move the side portion in the seat body, A plurality of the sensor detection units are arranged at intervals in a predetermined direction in the side portion, The vehicle seat according to claim 2, characterized in that the plurality of sensor detection units and the movable member are arranged at positions overlapping in the protruding direction of the movable member.

4. The movable member has a bag body that bulges by enclosing a fluid, The vehicle seat according to claim 3, further comprising a fluid supply device attached to the seat frame and supplying fluid to the bag body.

5. The bag body in the folded state has a vertex at a position away from the seated person in the sheet width direction, and has a shape having a long side at a position opposite to the vertex, characterized in that the vehicle seat according to claim 4.

6. The seat body has a seat cushion that serves as a seating portion. The vehicle seat is provided with a second movable member that is attached inside the seat cushion and moves to project the front portion of the seat cushion forward of the seat. A plurality of the biological sensors are arranged at intervals in the sheet width direction at the front portion of the cushion. The plurality of sensor detection portions and the second movable member are arranged at positions overlapping in the protruding direction of the second movable member, characterized in that the vehicle seat according to any one of claims 2 to 5.

7. On the surface of the cushion material, a skin suspension groove for suspending the terminal of the skin material is formed. The skin suspension groove is arranged on the left and right sides in the sheet width direction, and extends in a long shape along a direction intersecting the sheet width direction. The plurality of sensor detection portions are arranged outside the skin suspension groove in the sheet width direction, characterized in that the vehicle seat according to any one of claims 2 to 6.

8. A control device for processing the biological signal detected by the biological sensor is provided. The biological sensor includes a transmission path for electrically connecting the sensor detection portion and the control device. The transmission path is Connected to the plurality of sensor detection portions on the surface of the cushion material. It extends avoiding the skin suspension groove, characterized in that the vehicle seat according to claim 7.

9. The seat body has a seat cushion. The biological sensor is attached to the side portion of the seat cushion. A plurality of the sensor detection portions are arranged at intervals in the sheet front-rear direction on the surface side of the cushion material. The control device is attached to the back side of the cushion material. The cushion material is provided at a position different from the sensor detection portion, and has an insertion hole penetrating in the thickness direction of the cushion material for inserting the transmission path. The transmission path connects the sensor detection portion and the control device while passing through the insertion hole, characterized in that the vehicle seat according to claim 8.

10. The seat body has a seat cushion and a seat back. The vehicle seat includes a reclining device that connects the seat back to the seat cushion so as to be relatively rotatable. The back frame that forms the skeleton of the seat back has a back side frame disposed on the left and right sides and an upper frame that connects the upper ends of the left and right back side frames. The movable member has a first movable member and a second movable member respectively disposed on the front surfaces of the left and right back side frames, and a third movable member and a fourth movable member disposed on the front surfaces of the left and right ends of the upper frame. The vehicle seat according to any one of claims 2 to 5, characterized in that the sensor detection portions disposed at positions overlapping the third movable member in the protruding direction of the third movable member and the sensor detection portions disposed at positions overlapping the fourth movable member in the protruding direction of the fourth movable member are disposed on a common transmission path.

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