JP2018197037A - Vehicular seat - Google Patents

Abstract

To provide a vehicular seat which can transmit information detected by a sensor to the outside without involving arrangement of wiring from the seat to an exterior part of the seat.SOLUTION: A vehicular seat includes: a cushion frame (a side frame 33); a net material 22 which is stretched in the cushion frame (the side frame 33) and supports a seating occupant; and a sensor 51 which detects occupant seating information. The net material 22 receives a load from the occupant and is deformed. The sensor 51 includes: a power generation part 61 which converts force applied from the deformed net material 22 into electricity; and a radio part 62 which is supplied with electric power from the power generation part 61 and transmits an electric signal through radio communication.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle seat.

  Regarding a conventional vehicle seat, for example, Japanese Patent Application Laid-Open No. 2004-50956 discloses a vehicle seat that is easy to assemble, has necessary detection accuracy and durability, and provides a good sitting comfort. (Patent Document 1).

  A vehicle seat disclosed in Patent Literature 1 is assembled between a cushion pad, a seat cover, a cushion pad and a seat cover, and a film-like load detection sensor for detecting an occupant seated on the seat, and a load And a cushioning material disposed between the detection sensor and the seat cover. The load detection sensor is provided with a slit having one end opened between a region corresponding to the top plate portion of the sheet and a region corresponding to the bank portion of the sheet.

JP 2004-50956 A

  As disclosed in Patent Document 1 described above, a vehicle seat in which various sensors are provided on a seat to detect information on an occupant is known.

  In such a vehicle seat, since information detected by the sensor is transmitted as an electric signal to the control unit on the vehicle body side, it is necessary to route wiring from the seat to the control unit on the vehicle body side. However, in recent years, the degree of freedom of sheet arrangement has increased, and the amount of movement of the sheet during sheet arrangement has increased, making it difficult to route wiring from the sheet to the outside.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-described problems, and is a vehicle seat that can convey information detected by a sensor to the outside without accompanying wiring from the seat to the outside. Is to provide.

  A vehicle seat according to the present invention includes a frame, a planar elastic member that is stretched on the frame and supports a seated occupant, and a sensor that detects information about the occupant. The planar elastic member is deformed by receiving a load from the occupant. The sensor includes a power generation unit that converts a force applied from the deformed planar elastic member into electricity, and a radio unit that is supplied with power from the power generation unit and transmits an electrical signal wirelessly.

  According to the vehicle seat configured as described above, information on an occupant seated on the seat is wirelessly transmitted to the outside as an electrical signal by the wireless unit supplied with power from the power generation unit. Thereby, the information detected by the sensor can be transmitted to the outside without accompanying wiring from the sheet to the outside.

Preferably, the sensor is a seating sensor that detects whether an occupant is seated.
According to the vehicle seat configured as described above, the seating information of the occupant detected by the sensor can be transmitted to the outside without accompanying wiring from the seat to the outside.

  Preferably, the power generation unit is provided on a frame of the seat cushion among a seat cushion that supports the occupant from below and a seat back that supports the back of the occupant.

  According to the vehicle seat configured as described above, any of the above-described effects can be achieved in the seat in which the power generation unit is provided on the frame of the seat cushion.

  Preferably, the vehicle seat further includes an intermediate member that is provided between the planar elastic member and the power generation unit and transmits the deformation of the planar elastic member to the power generation unit. When the planar elastic member is viewed from above, the intermediate member is provided so as to cover the power generation unit.

  According to the vehicle seat thus configured, the design of the seat can be enhanced by preventing the power generation unit from being visually recognized by the passenger.

  As described above, according to the present invention, it is possible to provide a vehicle seat capable of transmitting information detected by a sensor to the outside without accompanying wiring from the seat to the outside. Can do.

It is a schematic perspective view which shows the seat of a motor vehicle. It is sectional drawing which shows the sheet | seat and sensor seen from the arrow direction on the II-II line in FIG. It is a perspective view which shows the sheet | seat (except net | network material) and a sensor in FIG. FIG. 3 is an exploded view of the sensor shown in FIG. 2. It is a block diagram for demonstrating the structure of the sensor in FIG. It is a top view which shows the installation form of the intermediate member in FIG. FIG. 10 is a diagram showing a first modification of the vehicle seat in the first embodiment. FIG. 10 is a diagram showing a first modification of the vehicle seat in the first embodiment. It is a figure which shows the 2nd modification of the vehicle seat in Embodiment 1. FIG.

  Embodiments of the present invention will be described with reference to the drawings. In the drawings referred to below, the same or corresponding members are denoted by the same reference numerals.

(Embodiment 1)
FIG. 1 is a schematic perspective view showing an automobile seat. Referring to FIG. 1, a vehicle seat 10 according to Embodiment 1 of the present invention is mounted on an automobile. The vehicle seat 10 may be a driver seat or a passenger seat, or may be a rear seat (rear seat) installed behind the driver seat and the passenger seat in the vehicle.

  First, the overall structure of the sheet will be described. The vehicle seat 10 includes a seat cushion 21 and a seat back 26. The seat cushion 21 is a seat portion that supports an occupant from below. The seat cushion 21 is provided on the floor surface in the vehicle compartment. The seat back 26 is a seat part that supports the back of the occupant. The seat back 26 is provided so as to rise from the end of the seat cushion 21 on the vehicle rear side.

  The vehicle seat 10 is a so-called net sheet, and includes a frame 30, a net member 22, and a net member 27. The net material 22 and the net material 27 are stretched on the frame 30.

  The frame 30 forms a skeleton of the sheet. The frame 30 has a cushion frame 32 and a back frame 42 as its constituent parts. The cushion frame 32 forms the frame 30 in the seat cushion 21, and the back frame 42 forms the frame 30 in the seat back 26. The cushion frame 32 and the back frame 42 are integrally provided via the bent portion 31.

  The cushion frame 32 further includes a side frame 33, a side frame 34, a front frame 35, and a rear frame 36 as its constituent parts.

  The side frame 33 and the side frame 34 are arranged with an interval in the vehicle width direction. The side frame 33 and the side frame 34 extend along the vehicle front-rear direction. The front frame 35 and the rear frame 36 extend in the vehicle width direction. The front frame 35 is provided so as to connect the side frame 33 and the side frame 34 on the front side of the vehicle. The rear frame 36 is provided on the vehicle rear side so as to connect the side frame 33 and the side frame 34. The side frame 33, the side frame 34, the front frame 35, and the rear frame 36 have a substantially rectangular frame shape.

  The side frame 33 and the side frame 34 are fixed to the floor surface in the vehicle compartment via the lower arm 12. In FIG. 1, only the lower arm 12 assembled to the side frame 34 is shown.

  The back frame 42 further includes a side frame 43, a side frame 44, an upper frame 45, and a lower frame 46 as components thereof.

  The side frame 43 and the side frame 44 are arranged with a gap in the vehicle width direction. The side frame 43 and the side frame 44 extend along the vertical direction. The upper frame 45 and the lower frame 46 extend in the vehicle width direction. The upper frame 45 is provided on the upper end side of the side frame 43 and the side frame 44 so as to connect the side frame 43 and the side frame 44. The lower frame 46 is provided on the lower end side of the side frame 43 and the side frame 44 so as to connect the side frame 43 and the side frame 44. The side frame 43, the side frame 44, the upper frame 45, and the lower frame 46 have a substantially rectangular frame shape.

  The cushion frame 32 and the back frame 42 may be connected to each other via a reclining mechanism for adjusting the angle of the seat back 26.

  The net member 22 and the net member 27 are stretched around the frame 30 and are provided as planar elastic members that support an occupant seated on the seat. The net material 22 and the net material 27 are made of, for example, a mesh body formed with a substantially uniform weaving density.

  The net member 22 and the net member 27 are stretched over the frame 30 in a state where a tensile force is applied along the surface direction of each net member. The net member 22 and the net member 27 elastically receive a load from an occupant seated on the seat. At this time, the net member 22 and the net member 27 are deformed by receiving a load from an occupant seated on the seat.

  The net material 22 is stretched over the frame 30 in the seat cushion 21, that is, the cushion frame 32. The net member 22 has a substantially rectangular surface shape, and is held by a side frame 33, a side frame 34, a front frame 35, and a rear frame 36 on its four sides. The net member 22 is provided so as to extend inside the frame shape formed by the side frame 43, the side frame 44, the upper frame 45, and the lower frame 46 (hereinafter also referred to as the frame shape formed by the cushion frame 32).

  The net member 27 is stretched around the frame 30 in the seat back 26, that is, the back frame 42. The net member 27 has a substantially rectangular surface shape, and is held by a side frame 43, a side frame 44, an upper frame 45, and a lower frame 46 on four sides thereof. The net member 27 is provided so as to spread inside the frame shape formed by the side frame 43, the side frame 44, the upper frame 45, and the lower frame 46.

  The type of the planar elastic member stretched on the frame is not particularly limited. For example, a cloth material having elasticity may be used, or a net material having a so-called three-dimensional braided structure may be used. Also good.

  In the present embodiment, separate net members are stretched on the cushion frame 32 and the back frame 42, but a single net member may be stretched.

  FIG. 2 is a cross-sectional view showing the sheet and the sensor viewed from the direction of the arrow on the line II-II in FIG. FIG. 3 is a perspective view showing the sheet (excluding the net material) and the sensor in FIG. FIG. 4 is an exploded view of the sensor shown in FIG. FIG. 5 is a block diagram for explaining the configuration of the sensor in FIG. Next, the sensor 51 provided on the vehicle seat 10 will be described.

  With reference to FIGS. 2 to 5, vehicle seat 10 in the present embodiment further includes a sensor 51. The sensor 51 is provided on the seat cushion 21 of the seat.

  The sensor 51 detects information related to an occupant seated on the seat. In the present embodiment, the sensor 51 is a seating sensor that detects whether an occupant is seated on the seat.

  The sensor 51 includes a power generation unit 61 and a radio unit 62. The power generation unit 61 converts the force applied from the net member 22 that is deformed when the passenger sits on the seat into electricity. The wireless unit 62 is supplied with electric power from the power generation unit 61 and transmits an electric signal wirelessly. In the present embodiment, a sensor 51 in which a power generation unit 61 and a radio unit 62 are provided integrally is used.

  More specifically, the structure of the sensor 51 is configured by combining the main body 53 and the actuating member 52. The operation member 52 is attached to the main body 53 so as to be rotatable about the rotation shaft 101. The actuating member 52 performs a turning operation, which is an operation for power generation, around the turning shaft 101.

  The main body 53 is provided with a power generation element 54 and a substrate 56. The power generation element 54 generates electricity using electromagnetic induction. More specifically, the power generation element 54 changes the direction of the magnetic flux in the coil by generating the electromotive force in the coil by transmitting the rotation of the operation member 52 to the main body 53. In such a configuration, the power generation unit 61 is configured by the operation member 52 and the power generation element 54.

  A wireless IC (Integrated Circuit) is mounted on the substrate 56. The wireless IC wirelessly transmits an electrical signal by using the power supplied from the power generation element 54 as driving power. In such a configuration, the wireless unit 62 is configured by the board 56 on which the wireless IC is mounted.

  FIG. 4 shows a configuration in which the rotating shaft 101 is disposed at one end of the operating member 52 and the other end of the operating member 52 is a swing end. However, the configuration is not limited to such a configuration. For example, the rotation shaft 101 may be disposed near the center between one end and the other end of the operating member 52, and the one end and the other end of the operating member 52 may be a swing end. Moreover, the operation | movement for the electric power generation which an operation member performs is not restricted to rotation operation | movement, For example, the reciprocation along one direction may be sufficient.

  The installation form of the sensor 51 will be described. The sensor 51 is provided on the frame 30. The power generation unit 61 is provided in the frame 30 together with the radio unit 62. The sensor 51 is provided on the side frame 33 of the cushion frame 32. The sensor 51 is provided at a position closer to the rear frame 36 than the front frame 35 in the vehicle longitudinal direction. The sensor 51 is provided on the back side of the net member 22 as viewed from the passenger sitting on the seat.

  The vehicle seat 10 in the present embodiment includes a bracket 71, a bracket 72, and a presser plate 73. The bracket 71 and the pressing plate 73 are configured to hold the net member 22 on the frame 30 (the side frame 33 of the cushion frame 32). The bracket 72 is configured to hold the sensor 51 on the frame 30 (the side frame 33 of the cushion frame 32).

  The bracket 72 has a hook part 72p and a sensor placement part 72q as its constituent parts. The hook portion 72p has a substantially U-shaped cross section and is hooked on the side frame 33 from above. The sensor placement portion 72q is provided continuously from the hook portion 72p inside the frame shape formed by the cushion frame 32. The sensor placement part 72q has a base shape capable of receiving the weight of the sensor 51.

  The sensor 51 is held with respect to the side frame 33 in the form of being placed on the sensor placement portion 72q. The sensor 51 is disposed inside the frame shape formed by the cushion frame 32. The sensor 51 is provided side by side with the side frame 33 in the horizontal direction. The sensor 51 is provided so that the operating member 52 is positioned on the opposite side of the side frame 33 with the main body 53 interposed therebetween. The actuating member 52 stands up and down, and is provided such that a swing end is disposed on the upper end side thereof, and a rotation shaft is disposed on the lower end side thereof.

  The bracket 71 is combined with the bracket 72 from below the side frame 33. The bracket 71 and the bracket 72 are provided so as to surround the periphery of the side frame 33.

  The bracket 71 has a net material holding part 71p as its constituent part. The net material holding portion 71p is disposed below the side frame 33. The net material holding part 71p has a plate shape extending along the vertical direction.

  The presser plate 73 has a plate shape and is superimposed on the net material holding portion 71p in a plane. The net member 22 is held against the side frame 33 by sandwiching the edge of the net member 22 between the presser plate 73 and the net member holding part 71p.

  The vehicle seat 10 in the present embodiment further includes an intermediate member 76. The intermediate member 76 is provided between the net member 22 and the sensor 51. The intermediate member 76 is provided between the net member 22 and the power generation unit 61. The intermediate member 76 is provided between the net member 22 and the operating member 52. The intermediate member 76 is configured to transmit the deformation of the net member 22 that occurs when the occupant sits on the seat to the power generation unit 61 (the operation member 52).

  The intermediate member 76 is made of a plate material having a substantially U-shaped cross section, and is covered by the bracket 72 and the sensor 51 from above.

  The intermediate member 76 includes a contact portion 76p, an arm portion 76q, and a contact portion 76r as constituent parts. The contact portion 76p is disposed above the side frame 33. The contact portion 76p is provided in contact with the bracket 72 (the hook portion 72p) from above. The arm portion 76q extends in an arm shape from the contact portion 76p toward the inside of the frame shape formed by the cushion frame 32. The arm portion 76q extends obliquely upward from the contact portion 76p. The arm portion 76q extends from the contact portion 76p so that the distance in the vertical direction from the bracket 72 and the sensor 51 gradually increases. The arm portion 76q is elastically deformable, and is configured to be swingable in the vertical direction with the contact portion 76p as a fulcrum when a force is applied from the outside.

  The contact portion 76r is bent from the extending end of the arm portion 76q and extends obliquely downward. The contact portion 76r is provided in contact with the operating member 52 (the rocking end thereof).

  The net member 22 has a peripheral portion around the side frame 33 from a position below the side frame 33 sandwiched between the presser plate 73 and the net member holding portion 71p, through the outside of the frame shape formed by the cushion frame 32. And extends toward the inside of the frame shape formed by the cushion frame 32. During this time, the net member 22 is in contact with the arm portion 76 q of the intermediate member 76 at a position above the side frame 33.

  When the occupant sits on the seat, the net member 22 is deformed by receiving the weight of the occupant. Specifically, the net member 22 is deformed so as to bend downward (in FIG. 2, the deformed net member 22 is indicated by a two-dot chain line). The amount of bending of the net member 22 increases as the frame shape formed by the cushion frame 32 is viewed from the position where the edge of the net member 22 is held.

  At this time, the deformed net member 22 presses the intermediate member 76, so that the arm portion 76q swings downward with the contact portion 76p as a fulcrum. As the arm portion 76q swings, the contact portion 76r presses the swing end of the actuating member 52. As a result, the operating member 52 rotates about the rotation shaft 101. The power generation unit 61 generates electricity as the operation member 52 rotates, and supplies power to the radio unit 62. In other words, in the present embodiment, the force from the deformed net member 22 is applied to the power generation unit 61 (operation member 52) via the intermediate member 76, and the power generation unit 61 converts the force into electricity. The wireless unit 62 supplied with power from the power generation unit 61 wirelessly transmits an electrical signal indicating that an occupant is seated on the seat to the control unit 110 on the vehicle body side.

  The seating information of the occupant transmitted to the vehicle body side is used, for example, for controlling a warning sound (seat belt warning sound) generated when the seat belt is not worn when the occupant is seated on the seat.

  According to such a configuration, the seating information of the occupant detected by the sensor 51 can be transmitted to the vehicle main body side without accompanying wiring from the seat to the vehicle main body side. Accordingly, the seating sensor can be mounted even when the seat arrangement of the seat has a high degree of freedom or the amount of movement of the seat during the seat arrangement is large.

  The installation location of the sensor 51 (power generation unit 61) is not limited to the side frame 33, and may be the side frame 34, the front frame 35, or the rear frame 36.

  FIG. 6 is a top view showing an installation form of the intermediate member in FIG. In FIG. 6, the net member 22 is indicated by a two-dot chain line. Referring to FIG. 6, intermediate member 76 is provided to cover sensor 51 when net member 22 is viewed from above. The intermediate member 76 is provided so as to cover the power generation unit 61.

  Since the net member 22 is formed of a mesh body, the sensor 51 provided on the back side of the net member 22 may be visually recognized by an occupant. On the other hand, in this Embodiment, the design property of a sheet | seat can be improved by making the intermediate member 76 function also as a cover body which covers the electric power generation part 61. FIG.

  The vehicle seat 10 according to the first embodiment of the present invention described above includes a cushion frame 32 as a frame, and a net member 22 as a planar elastic member that is stretched over the cushion frame 32 and supports a seated passenger. And a sensor 51 for detecting occupant seating information as information about the occupant. The net member 22 is deformed by receiving a load from the occupant. The sensor 51 includes a power generation unit 61 that converts the force applied from the deformed net member 22 into electricity, and a radio unit 62 that is supplied with power from the power generation unit 61 and transmits an electrical signal wirelessly.

  According to the vehicle seat 10 in the first embodiment of the present invention configured as described above, the seating information detected by the sensor 51 is externally provided without wiring from the seat to the outside. I can tell you.

  In the present embodiment, the configuration in which the sensor 51 (power generation unit 61) is provided in the cushion frame 32 of the seat cushion 21 has been described. However, the present invention is not limited to this, and the sensor 51 ( The power generation unit 61) may be provided. The radio unit of the present invention may further include not only an external transmission function but also an external reception function.

  In the present embodiment, the present invention is applied to an automobile seat. However, the present invention is not limited to this and may be applied to a seat mounted on an airplane, a ship, a train, or the like.

(Embodiment 2)
In the present embodiment, various modifications of the vehicle seat in the first embodiment will be described.

  7 and 8 are views showing a first modification of the vehicle seat in the first embodiment. FIGS. 7 and 8 correspond to FIGS. 2 and 3 in the first embodiment, respectively.

  7 and 8, in this modification, the vehicle seat has a bracket 81 and a bracket 83 in place of bracket 71, bracket 72, and presser plate 73 in the first embodiment. The bracket 81 and the bracket 83 are configured to hold the net member 22 on the frame 30 (the side frame 33 of the cushion frame 32). The bracket 81 is configured to guide an intermediate member 86 (described later) that operates with the deformation of the net member 22. The bracket 83 is configured to hold the sensor 51 on the frame 30 (the side frame 33 of the cushion frame 32).

  The bracket 81 includes a hook part 81p, a guide part 81q, and a net material holding part 81r as its constituent parts. The hook portion 81p has a substantially U-shaped cross-sectional shape and is hooked on the side frame 33 from above. The guide part 81q extends obliquely downward from the hook part 81p toward the inside of the frame shape formed by the cushion frame 32. The net material holding portion 81r extends in a plate shape downward from the hook portion 81p on the outside of the frame shape formed by the cushion frame 32.

  The bracket 83 is disposed below the side frame 33. The bracket 83 has a sensor placement part 83p and a net material holding part 83q as its constituent parts. The sensor placement portion 83p is disposed below the side frame 33 and the guide portion 81q. The sensor placement portion 83p has a base shape capable of receiving the weight of the sensor 51. The sensor placement portion 83p has a saucer shape on which the sensor 51 can be placed.

  The sensor 51 is held with respect to the side frame 33 in the form of being placed on the sensor placement portion 83p. The sensor 51 is provided side by side with the side frame 33 and the guide portion 81q in the vertical direction. A part of the sensor 51 is disposed below the side frame 33, and the remaining part is disposed inside the frame shape formed by the cushion frame 32. The actuating member 52 lies in the horizontal direction, is provided such that the pivot shaft 101 is disposed below the side frame, and the swing end is disposed inside the frame shape formed by the cushion frame 32.

  In the present modification, the vehicle seat has an intermediate member 86 instead of the intermediate member 76 in the first embodiment. The intermediate member 86 is provided between the net member 22 and the sensor 51. The intermediate member 86 is provided between the net member 22 and the power generation unit 61. The intermediate member 86 is configured to transmit the deformation of the net member 22 that occurs when an occupant sits on the seat to the power generation unit 61 (the operation member 52).

  The intermediate member 86 has one end 86p and the other end 86q as its constituent parts. The intermediate member 86 extends in a plate shape between the one end 86p and the other end 86q. The intermediate member 86 is provided in planar contact with the guide portion 81q between the one end 86p and the other end 86q. The intermediate member 86 is provided so as to be movable obliquely in the vertical direction while being guided by the guide portion 81q. The intermediate member 86 is in contact with the net member 22 at one end 86p, and is in contact with the operating member 52 (the swing end thereof) at the other end 86q.

  Referring to FIGS. 5, 7, and 8, when an occupant sits on the seat, net member 22 is deformed by receiving the weight of the occupant. Specifically, the net member 22 is deformed so as to bend downward (in FIG. 7, the deformed net member 22 is indicated by a two-dot chain line).

  At this time, the deformed net member 22 presses the intermediate member 86, so that the intermediate member 86 moves obliquely downward while being guided by the guide portion 81q. As the intermediate member 86 moves, the intermediate member 86 presses the swing end of the operating member 52. As a result, the operating member 52 rotates about the rotation shaft 101. The power generation unit 61 generates electricity as the operation member 52 rotates, and supplies power to the radio unit 62. The wireless unit 62 supplied with power from the power generation unit 61 wirelessly transmits an electrical signal indicating that an occupant is seated on the seat to the control unit 110 on the vehicle body side.

  FIG. 9 is a diagram showing a second modification of the vehicle seat in the first embodiment. FIG. 9 is a block diagram corresponding to FIG. 5 in the first embodiment.

  With reference to FIG. 9, in this modification, the sensor 51 includes a power generation unit 61, a radio unit 62, a sensing unit 63, and a battery 64.

  The power generation unit 61 generates power when force is applied from the deformed net member 22. The battery 64 stores electricity generated by the power generation unit 61. The power generation unit 61 supplies driving power to the sensing unit 63 and the radio unit 62 through the battery 64.

  The sensing unit 63 is composed of a film-like pressure sensor and detects the weight of an occupant seated on the seat. Preferably, the sensing unit 63 is provided on the seating surface of the net member 22. The wireless unit 62 receives the detection of the weight of the occupant in the sensing unit 63 and wirelessly transmits an electric signal indicating that the occupant is seated on the seat to the control unit 110 on the vehicle body side.

  It is also possible to replace the sensing unit 63 in this modification with a sensor capable of detecting biological information such as the heartbeat state and breathing state of the occupant seated on the seat, and configure the sensor 51 as a biological sensor.

  According to the vehicle seat according to the second embodiment of the present invention configured as described above, the effects described in the first embodiment can be similarly achieved.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The present invention is applied to, for example, a vehicle seat provided with a seating sensor.

  10 Vehicle Seat, 12 Lower Arm, 21 Seat Cushion, 22, 27 Net Material, 26 Seat Back, 30 Frame, 31 Bent Part, 32 Cushion Frame, 33, 34, 43, 44 Side Frame, 35 Front Frame, 36 Rear Frame , 42 Back frame, 45 Upper frame, 46 Lower frame, 51 Sensor, 52 Actuating member, 53 Main body part, 54 Power generation element, 56 Substrate, 61 Power generation part, 62 Radio part, 63 Sensing part, 64 Battery, 71, 72, 81,83 Bracket, 71p, 81r, 83q Net material holding part, 72p, 81p hooking part, 72q, 83p sensor mounting part, 73 holding plate, 76,86 intermediate member, 76p abutting part, 76q arm part, 76r contact Part, 81q guide part, 86p One end, 86q The other end, 101 Rotating shaft, 110 Control unit.

Claims (4)

Frame,
A planar elastic member stretched on the frame and supporting a seated occupant;
A sensor for detecting information on the occupant,
The planar elastic member is deformed by receiving a load from the occupant,
The sensor is
A power generation unit that converts the force applied from the deformed planar elastic member into electricity;
A vehicle seat comprising: a wireless unit that is supplied with electric power from the power generation unit and transmits an electric signal wirelessly.   The vehicle seat according to claim 1, wherein the sensor is a seating sensor that detects whether or not the occupant is seated.   The vehicle seat according to claim 1, wherein the power generation unit is provided on the frame of the seat cushion among a seat cushion that supports the occupant from below and a seat back that supports the back of the occupant. . An intermediate member that is provided between the planar elastic member and the power generation unit and transmits the deformation of the planar elastic member to the power generation unit;
The vehicle seat according to any one of claims 1 to 3, wherein the intermediate member is provided so as to cover the power generation unit when the planar elastic member is viewed from above.

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