WO2021049071A1 - Sensor device and seat for vehicle - Google Patents

Sensor device and seat for vehicle Download PDF

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Publication number
WO2021049071A1
WO2021049071A1 PCT/JP2020/011803 JP2020011803W WO2021049071A1 WO 2021049071 A1 WO2021049071 A1 WO 2021049071A1 JP 2020011803 W JP2020011803 W JP 2020011803W WO 2021049071 A1 WO2021049071 A1 WO 2021049071A1
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WO
WIPO (PCT)
Prior art keywords
electrode
sensor device
base material
contact portion
sensor
Prior art date
Application number
PCT/JP2020/011803
Other languages
French (fr)
Japanese (ja)
Inventor
河内　隆宏
Original Assignee
アルプスアルパイン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by アルプスアルパイン株式会社 filed Critical アルプスアルパイン株式会社
Priority to JP2021545106A priority Critical patent/JP7169455B2/en
Publication of WO2021049071A1 publication Critical patent/WO2021049071A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/62—Accessories for chairs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/62—Accessories for chairs
    • A47C7/72—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/90—Details or parts not otherwise provided for
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • H01H13/16—Operating parts, e.g. push-button adapted for operation by a part of the human body other than the hand, e.g. by foot

Definitions

  • the present invention relates to a sensor device and a vehicle seat.
  • a device that non-contactly detects the movement and electrical phenomena of a living body using electrodes placed near the living body For example, a sensor device in which an electrode is provided on a vehicle seat to measure a person's electrocardiogram in a non-contact manner is disclosed (for example, Patent Document 1).
  • a pressure sensor is provided to detect whether or not the person is in the correct position, and when the pressure reaches a predetermined level.
  • a device for determining a biological state for example, Patent Document 2.
  • Patent Document 2 it is necessary to provide a pressure sensor, which leads to an increase in cost and complicates the overall configuration. Therefore, there has been a demand for a sensor device having a simple structure and capable of accurately detecting biological information in a state where a person is in close contact with a vehicle seat.
  • a sheet-like base material having flexibility and insulating properties, a first electrode provided on one surface of the base material, and the base material are provided. It has a through hole and a wiring electrode provided on the other surface of the base material and connected to a circuit board, and the first through hole is on the side of the one surface. A contact portion connected to the electrode is provided, and a contact portion connected to the wiring electrode is provided on the side of the other surface of the through hole.
  • the disclosed sensor device it is possible to obtain a sensor device having a simple configuration that can accurately detect biological information while a person is in close contact with the vehicle seat.
  • FIG. 1 is a diagram showing an example of a vehicle seat 100 provided with the sensor device 10 according to the present embodiment.
  • the vehicle seat 100 includes a backrest portion 100a and a seat portion 100b, and a plurality of sensor devices 10 are installed inside the respective surfaces.
  • the vehicle seat 100 may have, for example, a function of blowing air for temperature control from the surface of the backrest portion 100a or the seat portion 100b.
  • the sensor device 10 according to the present embodiment since the sensor device 10 according to the present embodiment has air permeability, it does not obstruct the flow of air.
  • the sensor device 10 can be installed at an appropriate position on the backrest portion 100a or the seat portion 100b without affecting the temperature control function, and the information on the living body (change in body movement, electrocardiogram) can be installed with good sensitivity. (Electrical signals generated by living organisms such as) can be detected.
  • FIG. 2 is an exploded perspective view of the sensor device 10 according to the present embodiment as viewed from the bottom surface side
  • FIG. 3 is a top view
  • FIG. 4 is a bottom view
  • FIG. 5 is a alternate long and short dash line 3A in FIG. It is a cross-sectional view cut at -3B
  • FIG. 6 is a cross-sectional view cut at the alternate long and short dash line 3C-3D in FIG. Note that FIG. 6 is enlarged for convenience.
  • the sensor device 10 in the present embodiment includes a sheet-shaped base material 20, a sensor electrode 30 attached to one surface 21 of the base material 20, and a shield attached to the other surface 22 of the base material 20. It has an electrode 40 and.
  • the sensor electrode 30 may be referred to as a first electrode
  • the shield electrode 40 may be referred to as a second electrode.
  • the base material 20 is provided with a through hole 23, and the sensor electrode 30 provided on one surface 21 of the base material 20 is formed with a sensor extraction electrode 31 leading to the through hole 23.
  • a contact portion 31a provided at the end of 31 covers the side of one surface 21 of the through hole 23.
  • a wiring electrode 50 having a contact portion 50a covering the through hole 23 is provided on the other surface 22 of the base material 20, and the wiring electrode 50 is a sensor electrode connection terminal 61 provided on the circuit board 60 and solder or the like. Is connected by.
  • the through hole 23 is formed in a circular shape, and the contact portion 31a of the sensor extraction electrode 31 and the contact portion 50a of the wiring electrode 50 are formed in a circular shape slightly larger than the through hole 23. ..
  • the shield electrode 40 provided on the other surface 22 of the base material 20 is formed with a shield extraction electrode 41 up to the shield electrode connection terminal 62 of the circuit board 60, and the end portion of the shield extraction electrode 41 is formed. , It is connected to the shield electrode connection terminal 62 provided on the circuit board 60 by solder or the like.
  • one surface 21 side of the base material 20 is covered with the contact portion 31a of the sensor extraction electrode 31, and the other surface 22 side is covered with the contact portion 50a of the wiring electrode 50. It has been. Therefore, in the through hole 23 of the base material 20, the contact portion 31a of the sensor extraction electrode 31 and the contact portion 50a of the wiring electrode 50 face each other.
  • the sheet-shaped base material 20 is thin, flexible, and has insulating properties.
  • the base material 20 is formed of, for example, a non-woven fabric or the like.
  • a non-woven fabric is a sheet-like member in which insulating fibers are entangled and stretched in a plane.
  • the non-woven fabric is formed of, for example, synthetic fibers such as polyester and polyimide, and inorganic fibers such as glass fibers.
  • the sensor electrode 30, the shield electrode 40, and the wiring electrode 50 are formed of a conductive cloth, a conductive mesh, or the like that can be easily deformed.
  • a cloth formed of a chemical fiber such as polyester fiber is surface-coated with a metal (conductor) such as copper or nickel, or a cloth made of a fiber material containing a conductive material (carbon or the like). It is formed.
  • the circuit board 60 has an insulating property and is formed of a deformable flexible substrate.
  • the thickness of the base material 20 is about 1 mm, and the thickness of the sensor electrode 30, the shield electrode 40, and the wiring electrode 50 is 0.1 to 0.2 mm.
  • the through hole 23 provided in the base material 20 has a diameter of 5 mm to 10 mm.
  • the sensor electrode 30 is attached to one surface 21 of the base material 20 with a bonding material such as an adhesive or hot melt
  • the shield electrode 40 is attached to the other surface 22 of the base material 20 with an adhesive or hot melt. It is attached by a bonding material such as melt.
  • the size of the shield electrode main body excluding the shield lead-out electrode 41 of the shield electrode 40 is formed to be larger than the size of the sensor electrode main body excluding the sensor lead-out electrode 31 of the sensor electrode 30, and the shield electrode main body is formed. , Covers the sensor electrode body. That is, the sensor electrode main body is formed on one surface 21 in the region where the shield electrode main body is provided.
  • the sensor electrode 30 is arranged inside the vehicle seat 100 so as to be close to and opposed to the outer surface of the vehicle seat 100, and is electrostatically coupled to a person (not shown), which is a living body, from the living body. It can detect electrical signals such as electrocardiogram. Further, the shield electrode 40 is provided to suppress a noise component incident from the side opposite to the living body.
  • the circuit board 60 is arranged inside the vehicle seat 100 separated from the outer surface of the seat by bending the shield extraction electrode 41 and the wiring electrode 50, and is a detection circuit for detecting an electric signal from the sensor electrode 30. Also, a detection unit having an amplifier circuit or the like for amplifying an electric signal is provided. When detecting an electric signal or the like from a living body, the shield electrode 40 may be controlled to have the same potential as the sensor electrode 30, for example.
  • the sensor device according to the present embodiment is installed in the vehicle seat 100 so that the sensor electrode 30 is on the outside as described above. Therefore, when a person sits on the vehicle seat 100, the sensor device according to the present embodiment is pushed by the seated person, and wiring is performed with the contact portion 31a of the sensor extraction electrode 31 in the through hole 23 of the base material 20.
  • the contact portion 50a of the electrode 50 is in contact with the contact portion 50a and is electrically connected.
  • the sensor lead electrode 31 and the wiring electrode 50 are electrically connected to connect the sensor electrode 30 and the circuit board 60, and a voltage is applied to the sensor electrode 30 and electrostatically coupled to the human body.
  • the potential generated on the surface of the human body is detected by the sensor electrode 30 and transmitted to the circuit board 60.
  • the contact portion 31a of the sensor extraction electrode 31 and the contact portion 50a of the wiring electrode 50 are separated from each other in the through hole 23 of the base material 20. , The sensor electrode 30 and the circuit board 60 are not connected. However, when a person is sitting on the vehicle seat 100, the contact portion 31a of the sensor extraction electrode 31 and the contact portion 50a of the wiring electrode 50 come into contact with each other in the through hole 23 of the base material 20, so that the sensor electrode 30 and the sensor electrode 30 The circuit board 60 is connected, a voltage is applied to the sensor electrode 30, and the detected electric signal is output.
  • the contact structure is composed of the contact portion 31a of the sensor extraction electrode 31 and the contact portion 50a of the wiring electrode 50 facing each other in the through hole 23 of the base material 20, and functions as a switch.
  • FIG. 7 is a diagram schematically showing the function of the sensor device according to the present embodiment.
  • the switch 70 in FIG. 7 is formed by the contact portion 31a of the sensor extraction electrode 31 and the contact portion 50a of the wiring electrode 50 facing each other in the through hole 23 of the base material 20, and particularly requires other members or the like.
  • the base material 20 is provided with a through hole 23, and the contact portion 31a of the sensor extraction electrode 31 and the contact portion 50a of the wiring electrode 50 are provided so as to face each other in the through hole 23.
  • the configuration is simple. Yes, it can be manufactured at low cost.
  • FIG. 8 is a diagram showing a circuit configuration of the sensor device according to the present embodiment.
  • the sensor electrode 30 is connected to the input (+) of the amplifier 72 via the switch 70.
  • the output of the amplifier 72 is input to the detection unit 71, and the output of the amplifier 72 is connected to the input ( ⁇ ) of the amplifier 72 and is also connected to the shield electrode 40.
  • a voltage of 2.5 V is applied to the input (+) side of the amplifier 72 connected to the sensor electrode 30 via a 5 G ⁇ resistor.
  • the shield electrode 40 is connected to the output of the amplifier 72 so that the same voltage as the voltage of the sensor electrode 30 is applied, but a ground potential may be applied.
  • the voltage detected by the detection unit 71 exceeds a predetermined threshold value, it is assumed that an electric signal from the living body has been detected, and the subsequent processing is performed, but when the voltage is equal to or less than the predetermined threshold value. Is treated as if no electrical signal from the living body was detected. Specifically, when a person sits on the vehicle seat 100, the contact portion 31a of the sensor extraction electrode 31 and the contact portion 50a of the wiring electrode 50, which face each other in the through hole 23 of the base material 20, come into contact with each other. Therefore, the switch 70 is conducted, a voltage is applied to the sensor electrode 30, and the detected electric signal is transmitted to the detection unit 71. The voltage value of the electric signal detected in this way is a value exceeding a predetermined threshold value.
  • the contact portion 31a of the sensor extraction electrode 31 and the contact portion 50a of the wiring electrode 50 facing each other in the through hole 23 of the base material 20 may not come into contact with each other. Therefore, the switch 70 becomes non-conducting, and the value of the voltage detected by the detection unit 71 is an electric signal from the living body detected by the wiring electrode 50, and the area of the wiring electrode 50 is small. It is as follows.
  • the sensor extraction electrode 31 and the first wiring electrode 51 are provided on the side of one surface 21 of the through hole 23 of the base material 20, and the side of the other surface 22.
  • the second wiring electrode 52 may be provided on the surface.
  • the first wiring electrode 51 is connected to the sensor electrode connection terminal of the circuit board 60, and the sensor extraction electrode 31 and the first wiring electrode 51 are separated from each other.
  • the sensor extraction electrode 31 on one surface 21 and the second wiring electrode 52 on the other surface 22 come into contact with each other in the through hole 23 of the base material 20.
  • the second wiring electrode 52 on the other surface 22 and the first wiring electrode 51 on the other surface 21 come into contact with each other.
  • the electric signal detected by the sensor electrode 30 is transmitted to the circuit board 60 via the sensor extraction electrode 31, the second wiring electrode 52, and the first wiring electrode 51.
  • the sensor extraction electrode 31 and the first wiring electrode 51 on the side of one surface 21 are separated from the second wiring electrode 52 on the other surface 22. Therefore, the sensor electrode 30 is not connected to the circuit board 60.
  • the wiring electrode 50 is provided on the other surface 22 of the base material 20 and the other surface 64 of the circuit board 60, as shown in FIG. May be provided on the other surface 22 of the base material 20 and one surface 63 of the circuit board 60.
  • the sensor electrode 30 has a sensor extraction electrode 31, and the contact portion 31a is provided on the sensor extraction electrode 31, but the sensor electrode 30 may be rectangular and a contact portion may be provided therein. ..
  • the vehicle seat 100 is formed of a seat body 101 formed of urethane or the like, a seat cover 102 covering the seat body 101, or the like, and the sensor device 10 is formed. , Is installed between the seat body 101 and the seat cover 102.
  • the sheet main body 101 may be provided with a hard portion 103 that is harder than the other portions at a position corresponding to the through hole 23 of the base material 20.
  • the rigid portion 103 protrudes toward the sensor device 10 from the other portions of the seat body 101, and when a person sits on the vehicle seat 100 from the left side, the contact portion of the sensor extraction electrode 31 via the seat cover 102.
  • 31a is pushed to the right, the hard portion 103 is harder and less likely to be deformed than the other portions of the sheet body 101, so that the hard portion 103 and the contact portion 31a of the sensor extraction electrode 31 facing each other in the through hole 23 of the base material 20.
  • the contact of the wiring electrode 50 with the contact portion 50a can be ensured.
  • a protrusion 102a may be provided inside the seat cover 102.
  • the protrusion 102a is provided in a portion corresponding to the through hole 23 of the base material 20 of the sensor device 10, and protrudes from the other portion of the seat cover 102.
  • a force is applied to push the seat cover 102 to the right side, and the protrusion 102a provided inside the seat cover 102 becomes the contact portion of the sensor extraction electrode 31. Since the 31a is pushed, the contact portion 31a of the sensor extraction electrode 31 facing the through hole 23 of the base material 20 and the contact portion 50a of the wiring electrode 50 can be ensured to come into contact with each other.
  • FIGS. 14 to 16 is a top view of the sensor device according to the present embodiment
  • FIG. 15 is a bottom view
  • FIG. 16 is a cross-sectional view taken along the alternate long and short dash line 14A-14B in FIG.
  • the sensor device has a first wiring electrode 151, a second wiring electrode 152, a third wiring electrode 153, and a fourth wiring electrode 154 so as to surround the sensor electrode 130 and the shield electrode 40. Is provided, and a fifth wiring electrode 155 connected to the circuit board 60 is provided.
  • the sensor electrode 130 is formed on one surface 21 of the base material 20, and the sensor electrode main body is the same as the sensor electrode 30 in the first embodiment.
  • the sensor electrode 130 is formed with a sensor extraction electrode 131 extending in the upper right direction on one surface 21 of the base material, and a contact portion 131a is provided at the end of the sensor extraction electrode 131.
  • the first wiring electrode 151 is provided on the other surface 22 of the base material 20.
  • the first wiring electrode 151 is provided on the upper side of the shield electrode 40 shown in FIG. 15, and is formed so as to extend in the lateral direction.
  • Contact portions 151a and 151b are provided at both ends of the first wiring electrode 151.
  • the second wiring electrode 152 is provided on one surface 21 of the base material 20.
  • the second wiring electrode 152 is provided on the left side of the sensor electrode 130 shown in FIG. 14, and is formed so as to extend in the vertical direction from the upper left to the center of the left side.
  • Contact portions 152a and 152b are provided at both ends of the second wiring electrode 152.
  • the third wiring electrode 153 is provided on the other surface 22 of the base material 20.
  • the third wiring electrode 153 is provided on the right side of the shield electrode 40 shown in FIG. 15, and is formed so as to extend in the vertical direction from the center of the right side to the lower right.
  • Contact portions 153a and 153b are provided at both ends of the third wiring electrode 153.
  • the fourth wiring electrode 154 is provided on one surface 21 of the base material 20.
  • the fourth wiring electrode 154 is provided below the sensor electrode 130 shown in FIG. 14, and is formed so as to extend in the lateral direction.
  • Contact portions 154a and 154b are provided at both ends of the fourth wiring electrode 154.
  • the fifth wiring electrode 155 is provided on the other surface 22 of the base material 20.
  • the fifth wiring electrode 155 is provided on the left side of the shield electrode 40 shown in FIG. 15, and the end portion is connected to the sensor electrode connection terminal 61 provided on the circuit board 60 by solder or the like.
  • a contact portion 155a is provided at an end of the circuit board 60 of the fifth wiring electrode 155 opposite to the side connected to the sensor electrode connection terminal 61.
  • the base material 20 is provided with a through hole 123, and the contact portion 131a of the sensor extraction electrode 131 is provided on the side of one surface 21 of the base material 20.
  • a contact portion 151a of the first wiring electrode 151 is provided on the side of the other surface 22, and has a contact structure. Therefore, in a state where no force is applied, the contact portion 131a of the sensor extraction electrode 131 facing the through hole 123 of the base material 20 and the contact portion 151a of the first wiring electrode 151 are separated from each other, but the base.
  • the contact portion 131a of the sensor extraction electrode 131 When the contact portion 131a of the sensor extraction electrode 131 is pushed from the side of one surface 21 of the material 20, the contact portion 131a of the sensor extraction electrode 131 and the contact portion 151a of the first wiring electrode 151 come into contact with each other and electrically. Be connected.
  • the base material 20 is also provided with a through hole (not shown) between the contact portion 151b of the first wiring electrode 151 and the contact portion 152a of the second wiring electrode 152, and has a contact structure. It has become. Further, the base material 20 is also provided with a through hole (not shown) between the contact portion 152b of the second wiring electrode 152 and the contact portion 153a of the third wiring electrode 153 to form a contact structure. ing. The base material 20 is also provided with a through hole (not shown) between the contact portion 153b of the third wiring electrode 153 and the contact portion 154a of the fourth wiring electrode 154 to form a contact structure. .. The base material 20 is also provided with a through hole (not shown) between the contact portion 154b of the fourth wiring electrode 154 and the contact portion 155a of the fifth wiring electrode 155, and has a contact structure. ..
  • the sensor device is provided with five contact structures.
  • the sensor electrodes are electrically connected when the opposing contact portions in the above five contact structures come into contact with each other.
  • the electric signal detected in 130 is transmitted to the circuit board 60 side.
  • the contact portion 131a of the sensor extraction electrode 131 and the contact portion 151a of the first wiring electrode 151a come into contact with each other, and the contact portion 152b of the second wiring electrode 152 and the contact portion of the third wiring electrode 153.
  • the contact portion 153a comes into contact with the contact portion 153b of the third wiring electrode 153 and the contact portion 154a of the fourth wiring electrode 154, and the contact portion 154b of the fourth wiring electrode 154 and the fifth wiring electrode 155 come into contact with each other.
  • the contact portion 155a of the above comes into contact with the contact portion 155a.
  • the electric signal detected in the sensor electrode 130 is the sensor lead electrode 131, the first wiring electrode 151, the second wiring electrode 152, the third wiring electrode 153, the fourth wiring electrode 154, and the fifth wiring. It is transmitted to the circuit board 60 via the electrode 155.
  • the electric signal detected by the sensor electrode 130 is transmitted to the circuit board 60 side only when a desired load is applied to the entire surface of the sensor device.
  • a desired load is not applied to the entire surface of the sensor device, such as when a part of the back sits away from the vehicle seat 100. Since the detection signal is below the threshold value, more accurate detection is possible.
  • FIG. 17 is a top view of the sensor device according to the present embodiment
  • FIG. 18 is a bottom view
  • FIG. 19 is a cross-sectional view taken along the alternate long and short dash line 17A-17B in FIG.
  • the sensor device in this embodiment also has a contact structure provided between the shield electrode 240 and the circuit board 60.
  • a contact structure provided between the shield electrode 240 and the circuit board 60.
  • the shield electrode 240 is formed on the other surface 22 of the base material 20, and the shield electrode main body is the same as the shield electrode 40 in the first embodiment.
  • the shield electrode 240 is formed with a shield extraction electrode 241 extending to the right on the other surface 22 of the base material 20, and a contact portion 241a is provided at the end of the shield extraction electrode 241.
  • the sixth wiring electrode 256 is provided on one surface 21 of the base material 20.
  • the sixth wiring electrode 256 is provided on the right side of the sensor electrode 130 shown in FIG. 17, and is formed so as to extend in the vertical direction.
  • Contact portions 256a and 256b are provided at both ends of the sixth wiring electrode 256.
  • the seventh wiring electrode 257 is provided on the other surface 22 of the base material 20.
  • the seventh wiring electrode 257 is provided on the left side of the shield electrode 240 shown in FIG. 18, and the end portion is connected to the shield electrode connection terminal 62 provided on the circuit board 60 by solder or the like.
  • a contact portion 257a is provided at an end of the circuit board 60 of the seventh wiring electrode 257 opposite to the side connected to the shield electrode connection terminal 62.
  • the base material 20 is provided with through holes 223 and 224.
  • the contact portion 256a of the sixth wiring electrode 256 is provided on the side of one surface 21 of the base material 20, and the shield is provided on the side of the other surface 22.
  • a contact portion 241a of the extraction electrode 241 is provided to form a contact structure.
  • the contact portion 256b of the sixth wiring electrode 256 is provided on the side of one surface 21 of the base material 20, and on the side of the other surface 22.
  • the contact portion 257a of the seventh wiring electrode 257 is provided, and has a contact structure.
  • the contact portion 256a of the sixth wiring electrode 256 and the contact portion 241a of the shield extraction electrode 241 facing each other in the through hole 223 of the base material 20 are separated from each other.
  • the contact portion 256b of the sixth wiring electrode 256 and the contact portion 257a of the seventh wiring electrode 257 facing each other in the through hole 224 of the base material 20 are separated from each other.
  • the sensor extraction electrode 131 When a person sits on the vehicle seat 100, the sensor extraction electrode 131 is pushed from the side of one surface 21 of the base material 20, and the contact portion 256a of the sixth wiring electrode 256 and the contact portion 241a of the shield extraction electrode 241 come together. When they come into contact with each other, the contact portion 256b of the sixth wiring electrode 256 and the contact portion 257a of the seventh wiring electrode 257 come into contact with each other and are electrically connected.
  • the vehicle seat of the present embodiment is characterized by the seat body 101 or the seat cover 102 of the vehicle seat 100 in which the sensor device 10 of the first embodiment is installed. It has.
  • the sensor device 10 is installed between the seat body 101 of the vehicle seat 100 and the seat cover 102.
  • a recess 102b in which the sensor device 10 is inserted is provided inside the seat cover 102, and as shown in FIG. 21, the sensor device 10 is provided with a recess 102b. It is placed in the recess 102b inside the seat cover 102.
  • the seat cover 102 of the recess 102b is thinner than the other parts, when a person sits on the vehicle seat 100, the distance between the sensor device 10 and the person becomes shorter, and the static electricity between the person and the sensor device 10 becomes shorter. The state of connection is stabilized, and the biometric information of the person sitting on the vehicle seat can be obtained more accurately. Further, by inserting the sensor device 10 into the recess 102b of the seat cover 102, the position of the sensor device 10 is stabilized, and the sensor device 10 moves between the seat body 101 and the seat cover 102 during use. It is possible to prevent it from being lost.
  • the portion of the seat body 101 on which the sensor device 10 is installed may be formed of a hard portion 101a that is harder than the other portions.
  • the hard portion 101a is formed of, for example, hard urethane or the like.
  • the portion where the sensor device 10 is installed is formed by the rigid portion 101a which is harder than the other portions, so that even when a person sits on the vehicle seat, the rigid portion 101a Since is hard, it does not deform much as compared with other parts, and the electrostatic coupling between the person and the sensor device 10 becomes more reliable.
  • the seat main body 101 is provided with a convex portion 101b in which the portion where the sensor device 10 is installed protrudes toward the sensor device 10 side from the other portions. It may be the one that exists.
  • the convex portion 101b in the portion where the sensor device 10 is installed in the seat main body portion 101, when a person sits on the vehicle seat, the person is particularly provided in the portion where the convex portion 101b is provided. Since the load is concentrated, the electrostatic coupling between the person and the sensor device 10 becomes more reliable.
  • the seat structural member 104 formed of a metal or a hard resin material is located behind the portion where the sensor device 10 is installed.
  • the sensor device 10 may be installed as described above.
  • the seat structural member 104 is made of a material harder than the seat main body 101, and when a person sits on the vehicle seat, the seat main body 101 is thin because the portion where the seat structural member 104 is provided is thin. , Less deformation than other parts. Therefore, the load of the person is concentrated on the portion where the sensor device 10 is installed, and the electrostatic coupling between the person and the sensor device 10 becomes more reliable.
  • Sensor device 20 Base material 21 One surface 22 Another surface 23 Through hole 30 Sensor electrode 31 Sensor extraction electrode 31a Contact electrode 40 Shield electrode 50 Wiring electrode 50a Contact section 60 Circuit board 61 Sensor electrode connection terminal 62 Shield electrode connection terminal 100 Vehicle seat 100a Backrest 100b Seat 101 Seat body 102 Seat cover

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

A sensor device characterized by comprising a sheet-like base material that is flexible and insulating, a first electrode provided on one surface of the base material, a through-hole provided in the base material, and a wiring electrode provided on the other surface of the base material and connected to a circuit base board, wherein the one surface side of the through-hole is provided with a contact part connected to the first electrode, and the other surface side of the through-hole is provided with a contact part connected to the wiring electrode.

Description

センサ装置及び車両用シートSensor device and vehicle seat
　本発明は、センサ装置及び車両用シートに関するものである。 The present invention relates to a sensor device and a vehicle seat.
　生体の近くに配置させた電極を用いて、生体の運動や電気現象を非接触に検出する装置が知られている。例えば、車両用シートに電極を設けて、非接触で人の心電測定を行うセンサ装置が開示されている（例えば、特許文献１）。また、車両用シートより人が離れてしまうと正確な心電測定の結果を得ることができないため、人が正しいポジションにあるか否かを検出する圧力センサを設け、所定の圧力になったときに、生体状態の判定を行うものが開示されている（例えば、特許文献２）。 There is known a device that non-contactly detects the movement and electrical phenomena of a living body using electrodes placed near the living body. For example, a sensor device in which an electrode is provided on a vehicle seat to measure a person's electrocardiogram in a non-contact manner is disclosed (for example, Patent Document 1). In addition, since accurate electrocardiographic measurement results cannot be obtained if a person is separated from the vehicle seat, a pressure sensor is provided to detect whether or not the person is in the correct position, and when the pressure reaches a predetermined level. Discloses a device for determining a biological state (for example, Patent Document 2).
国際公開第２０１９／１１６９１９号International Publication No. 2019/116919 特許第４９６２７３５号公報Japanese Patent No. 4962735
　しかしながら、特許文献２に開示されている方法では、圧力センサを設けることが必要となり、コストアップにつながったり、全体の構成が複雑になる。このため、簡素な構成で、車両用シートに人が密着している状態で生体情報を正確に検出することのできるセンサ装置が求められていた。 However, in the method disclosed in Patent Document 2, it is necessary to provide a pressure sensor, which leads to an increase in cost and complicates the overall configuration. Therefore, there has been a demand for a sensor device having a simple structure and capable of accurately detecting biological information in a state where a person is in close contact with a vehicle seat.
　本実施の形態の一観点によれば、可撓性と、絶縁性を有するシート状の基材と、前記基材の一方の面に設けられた第１の電極と、前記基材に設けられた貫通穴と、前記基材の他方の面に設けられており、回路基板と接続されている配線電極と、を有し、前記貫通穴の前記一方の面の側には、前記第１の電極と接続された接点部が設けられており、前記貫通穴の前記他方の面の側には、配線電極と接続された接点部が設けられていることを特徴とする。 According to one aspect of the present embodiment, a sheet-like base material having flexibility and insulating properties, a first electrode provided on one surface of the base material, and the base material are provided. It has a through hole and a wiring electrode provided on the other surface of the base material and connected to a circuit board, and the first through hole is on the side of the one surface. A contact portion connected to the electrode is provided, and a contact portion connected to the wiring electrode is provided on the side of the other surface of the through hole.
　開示のセンサ装置によれば、車両用シートに人が密着している状態で生体情報を正確に検出することができるセンサ装置を簡素な構成で得ることができる。 According to the disclosed sensor device, it is possible to obtain a sensor device having a simple configuration that can accurately detect biological information while a person is in close contact with the vehicle seat.
第１の実施に形態におけるセンサ装置を備えた車両用シートの斜視図Perspective view of the vehicle seat provided with the sensor device according to the first embodiment. 第１の実施に形態におけるセンサ装置の分解斜視図An exploded perspective view of the sensor device according to the first embodiment. 第１の実施に形態におけるセンサ装置の上面図Top view of the sensor device according to the first embodiment 第１の実施に形態におけるセンサ装置の底面図Bottom view of the sensor device according to the first embodiment 第１の実施に形態におけるセンサ装置の断面図Cross-sectional view of the sensor device according to the first embodiment 第１の実施に形態におけるセンサ装置の要部断面図Cross-sectional view of the main part of the sensor device according to the first embodiment 第１の実施に形態におけるセンサ装置の説明図（１）Explanatory drawing (1) of the sensor device in the 1st Embodiment 第１の実施に形態におけるセンサ装置の説明図（２）Explanatory drawing (2) of the sensor device in the 1st Embodiment 第１の実施に形態におけるセンサ装置の変形例１の説明図Explanatory drawing of modification 1 of the sensor apparatus in 1st Embodiment 第１の実施に形態におけるセンサ装置の配線電極の配置の説明図（１）Explanatory drawing of arrangement of wiring electrode of sensor apparatus in 1st Embodiment (1) 第１の実施に形態におけるセンサ装置の配線電極の配置の説明図（２）Explanatory drawing of arrangement of wiring electrode of sensor apparatus in 1st Embodiment (2) 第１の実施に形態におけるセンサ装置を備えた車両用シートの説明図（１）Explanatory drawing of the vehicle seat provided with the sensor device in the first embodiment (1) 第１の実施に形態におけるセンサ装置を備えた車両用シートの説明図（２）Explanatory drawing of the vehicle seat provided with the sensor device in the first embodiment (2) 第２の実施に形態におけるセンサ装置の上面図Top view of the sensor device according to the second embodiment 第２の実施に形態におけるセンサ装置の底面図Bottom view of the sensor device according to the second embodiment 第２の実施に形態におけるセンサ装置の断面図Cross-sectional view of the sensor device according to the second embodiment 第３の実施に形態におけるセンサ装置の上面図Top view of the sensor device according to the third embodiment 第３の実施に形態におけるセンサ装置の底面図Bottom view of the sensor device according to the third embodiment 第３の実施に形態におけるセンサ装置の断面図Cross-sectional view of the sensor device according to the third embodiment 第４の実施に形態における車両用シートの説明図（１）Explanatory drawing of the vehicle seat in the fourth embodiment (1) 第４の実施に形態における車両用シートの説明図（２）Explanatory drawing of the vehicle seat in the fourth embodiment (2) 第４の実施に形態における車両用シートの変形例１の説明図Explanatory drawing of modification 1 of vehicle seat in 4th Embodiment 第４の実施に形態における車両用シートの変形例２の説明図Explanatory drawing of modification 2 of vehicle seat in 4th Embodiment 第４の実施に形態における車両用シートの変形例３の説明図Explanatory drawing of modification 3 of vehicle seat in 4th Embodiment
　実施するための形態について、以下に説明する。尚、同じ部材等については、同一の符号を付して説明を省略する。 The mode for implementation will be described below. The same members and the like are designated by the same reference numerals and the description thereof will be omitted.
　〔第１の実施の形態〕
　図１は、本実施の形態におけるセンサ装置１０を備えた車両用シート１００の一例を示す図である。車両用シート１００は背もたれ部１００ａと座部１００ｂとを備えており、それぞれの表面より内側に複数のセンサ装置１０が設置されている。車両用シート１００は、例えば背もたれ部１００ａや座部１００ｂの表面から温度調節用の空気を送風する機能を備えていてもよい。この場合、本実施の形態に係るセンサ装置１０は通気性を有するため、空気の流れを阻害することはない。そのため、温度調節機能に影響を与えることなく、背もたれ部１００ａや座部１００ｂの適切な場所にセンサ装置１０を設置させることができ、良好な感度で生体の情報（体の動きの変化、心電等の生体が発生する電気信号など）を検出することができる。 [First Embodiment]
FIG. 1 is a diagram showing an example of a vehicle seat 100 provided with the sensor device 10 according to the present embodiment. The vehicle seat 100 includes a backrest portion 100a and a seat portion 100b, and a plurality of sensor devices 10 are installed inside the respective surfaces. The vehicle seat 100 may have, for example, a function of blowing air for temperature control from the surface of the backrest portion 100a or the seat portion 100b. In this case, since the sensor device 10 according to the present embodiment has air permeability, it does not obstruct the flow of air. Therefore, the sensor device 10 can be installed at an appropriate position on the backrest portion 100a or the seat portion 100b without affecting the temperature control function, and the information on the living body (change in body movement, electrocardiogram) can be installed with good sensitivity. (Electrical signals generated by living organisms such as) can be detected.
　（センサ装置）
　次に、本実施の形態におけるセンサ装置１０について、図２から図６に基づき説明する。図２は、本実施の形態におけるセンサ装置１０を底面側から見た分解斜視図であり、図３は上面図であり、図４は底面図であり、図５は、図３における一点鎖線３Ａ－３Ｂにおいて切断した断面図であり、図６は、図３における一点鎖線３Ｃ－３Ｄにおいて切断した断面図である。尚、図６は、便宜上、拡大している。 (Sensor device)
Next, the sensor device 10 according to the present embodiment will be described with reference to FIGS. 2 to 6. FIG. 2 is an exploded perspective view of the sensor device 10 according to the present embodiment as viewed from the bottom surface side, FIG. 3 is a top view, FIG. 4 is a bottom view, and FIG. 5 is a alternate long and short dash line 3A in FIG. It is a cross-sectional view cut at -3B, and FIG. 6 is a cross-sectional view cut at the alternate long and short dash line 3C-3D in FIG. Note that FIG. 6 is enlarged for convenience.
　本実施の形態におけるセンサ装置１０は、シート状の基材２０と、基材２０の一方の面２１に貼り付けられたセンサ電極３０と、基材２０の他方の面２２に貼り付けられたシールド電極４０とを有する。本願においては、センサ電極３０を第１の電極、シールド電極４０を第２の電極と記載する場合がある。 The sensor device 10 in the present embodiment includes a sheet-shaped base material 20, a sensor electrode 30 attached to one surface 21 of the base material 20, and a shield attached to the other surface 22 of the base material 20. It has an electrode 40 and. In the present application, the sensor electrode 30 may be referred to as a first electrode, and the shield electrode 40 may be referred to as a second electrode.
　基材２０には貫通穴２３が設けられており、基材２０の一方の面２１に設けられたセンサ電極３０には、貫通穴２３に至るセンサ引出電極３１が形成されており、センサ引出電極３１の端に設けられている接点部３１ａが、貫通穴２３の一方の面２１の側を覆っている。基材２０の他方の面２２には、貫通穴２３を覆う接点部５０ａを有する配線電極５０が設けられており、配線電極５０は、回路基板６０に設けられたセンサ電極接続端子６１とハンダ等により接続されている。本実施の形態においては、貫通穴２３は円形で形成されており、センサ引出電極３１の接点部３１ａ、及び、配線電極５０の接点部５０ａは貫通穴２３よりも若干大きな円形で形成されている。 The base material 20 is provided with a through hole 23, and the sensor electrode 30 provided on one surface 21 of the base material 20 is formed with a sensor extraction electrode 31 leading to the through hole 23. A contact portion 31a provided at the end of 31 covers the side of one surface 21 of the through hole 23. A wiring electrode 50 having a contact portion 50a covering the through hole 23 is provided on the other surface 22 of the base material 20, and the wiring electrode 50 is a sensor electrode connection terminal 61 provided on the circuit board 60 and solder or the like. Is connected by. In the present embodiment, the through hole 23 is formed in a circular shape, and the contact portion 31a of the sensor extraction electrode 31 and the contact portion 50a of the wiring electrode 50 are formed in a circular shape slightly larger than the through hole 23. ..
　また、基材２０の他方の面２２に設けられたシールド電極４０には、回路基板６０のシールド電極接続端子６２に至るまでシールド引出電極４１が形成されており、シールド引出電極４１の端部は、回路基板６０に設けられたシールド電極接続端子６２とハンダ等により接続されている。 Further, the shield electrode 40 provided on the other surface 22 of the base material 20 is formed with a shield extraction electrode 41 up to the shield electrode connection terminal 62 of the circuit board 60, and the end portion of the shield extraction electrode 41 is formed. , It is connected to the shield electrode connection terminal 62 provided on the circuit board 60 by solder or the like.
　従って、貫通穴２３は、基材２０の一方の面２１の側は、センサ引出電極３１の接点部３１ａにより覆われており、他方の面２２の側は、配線電極５０の接点部５０ａにより覆われている。よって、基材２０の貫通穴２３では、センサ引出電極３１の接点部３１ａと配線電極５０の接点部５０ａとが対向している。 Therefore, in the through hole 23, one surface 21 side of the base material 20 is covered with the contact portion 31a of the sensor extraction electrode 31, and the other surface 22 side is covered with the contact portion 50a of the wiring electrode 50. It has been. Therefore, in the through hole 23 of the base material 20, the contact portion 31a of the sensor extraction electrode 31 and the contact portion 50a of the wiring electrode 50 face each other.
　シート状の基材２０は、薄く、可撓性を有するとともに、絶縁性を有している。基材２０は、例えば、不織布等により形成されている。不織布は、絶縁性を持つ繊維が絡み合って平面状に延ばされたシート状の部材である。不織布は、例えば、ポリエステル、ポリイミドなどの合成繊維や、ガラス繊維などの無機繊維により形成されている。 The sheet-shaped base material 20 is thin, flexible, and has insulating properties. The base material 20 is formed of, for example, a non-woven fabric or the like. A non-woven fabric is a sheet-like member in which insulating fibers are entangled and stretched in a plane. The non-woven fabric is formed of, for example, synthetic fibers such as polyester and polyimide, and inorganic fibers such as glass fibers.
　センサ電極３０、シールド電極４０及び配線電極５０は、容易に変形可能な導電布や導電メッシュ等により形成されている。例えば、ポリエステル繊維などの化学繊維で形成された布帛に、銅やニッケルなどの金属（導体）が表面コートされたものや、導電性を有する材料（カーボンなど）を含んだ繊維材料の布帛等により形成されている。回路基板６０は、絶縁性を有しており、変形可能なフレキシブル基板により形成されている。 The sensor electrode 30, the shield electrode 40, and the wiring electrode 50 are formed of a conductive cloth, a conductive mesh, or the like that can be easily deformed. For example, a cloth formed of a chemical fiber such as polyester fiber is surface-coated with a metal (conductor) such as copper or nickel, or a cloth made of a fiber material containing a conductive material (carbon or the like). It is formed. The circuit board 60 has an insulating property and is formed of a deformable flexible substrate.
　本実施の形態においては、基材２０の厚さは、約１ｍｍであり、センサ電極３０、シールド電極４０及び配線電極５０の厚さは、０．１～０．２ｍｍである。基材２０に設けられた貫通穴２３は直径が５ｍｍ～１０ｍｍである。 In the present embodiment, the thickness of the base material 20 is about 1 mm, and the thickness of the sensor electrode 30, the shield electrode 40, and the wiring electrode 50 is 0.1 to 0.2 mm. The through hole 23 provided in the base material 20 has a diameter of 5 mm to 10 mm.
　センサ電極３０は、基材２０の一方の面２１に、接着剤やホットメルト等の接合材により貼り付けられており、シールド電極４０は、基材２０の他方の面２２に、接着剤やホットメルト等の接合材により貼り付けられている。基材２０へのセンサ電極３０及びシールド電極４０を貼り付ける方法としては、例えば、センサ電極３０及びシールド電極４０と基材２０とを重ね合わせた状態で、接合させる場所に熱や振動を加えたり、レーザー光を照射することにより溶融してもよい。 The sensor electrode 30 is attached to one surface 21 of the base material 20 with a bonding material such as an adhesive or hot melt, and the shield electrode 40 is attached to the other surface 22 of the base material 20 with an adhesive or hot melt. It is attached by a bonding material such as melt. As a method of attaching the sensor electrode 30 and the shield electrode 40 to the base material 20, for example, in a state where the sensor electrode 30 and the shield electrode 40 and the base material 20 are overlapped, heat or vibration is applied to a place to be joined. , May be melted by irradiating with laser light.
　シールド電極４０のシールド引出電極４１を除いたシールド電極本体部の大きさは、センサ電極３０のセンサ引出電極３１を除いたセンサ電極本体部の大きさよりも大きく形成されており、シールド電極本体部が、センサ電極本体部を覆っている。即ち、シールド電極本体部が設けられている領域内の一方の面２１にセンサ電極本体部が形成されている。 The size of the shield electrode main body excluding the shield lead-out electrode 41 of the shield electrode 40 is formed to be larger than the size of the sensor electrode main body excluding the sensor lead-out electrode 31 of the sensor electrode 30, and the shield electrode main body is formed. , Covers the sensor electrode body. That is, the sensor electrode main body is formed on one surface 21 in the region where the shield electrode main body is provided.
　センサ電極３０は、車両用シート１００の外表面に近接して且つ対向するよう車両用シート１００の内部に配置され、生体である不図示の人と静電結合している状態で、生体からの心電等の電気信号を検出することができる。また、シールド電極４０は生体とは反対側より入射するノイズ成分を抑制するために設けられている。 The sensor electrode 30 is arranged inside the vehicle seat 100 so as to be close to and opposed to the outer surface of the vehicle seat 100, and is electrostatically coupled to a person (not shown), which is a living body, from the living body. It can detect electrical signals such as electrocardiogram. Further, the shield electrode 40 is provided to suppress a noise component incident from the side opposite to the living body.
　回路基板６０は、シールド引出電極４１および配線電極５０を湾曲させる事で、シートの外表面から離間した車両用シート１００の内部に配置され、センサ電極３０からの電気信号を検出するための検出回路や、電気信号を増幅するための増幅回路等を有する検出部が設けられている。尚、生体からの電気信号等を検出する際には、シールド電極４０は、例えば、センサ電極３０と同電位となるように制御されていてもよい。 The circuit board 60 is arranged inside the vehicle seat 100 separated from the outer surface of the seat by bending the shield extraction electrode 41 and the wiring electrode 50, and is a detection circuit for detecting an electric signal from the sensor electrode 30. Also, a detection unit having an amplifier circuit or the like for amplifying an electric signal is provided. When detecting an electric signal or the like from a living body, the shield electrode 40 may be controlled to have the same potential as the sensor electrode 30, for example.
　本実施の形態におけるセンサ装置は、車両用シート１００内において、前述のようにセンサ電極３０が外側となるように設置されている。従って、車両用シート１００に人が座った場合には、座った人により、本実施の形態におけるセンサ装置が押され、基材２０の貫通穴２３において、センサ引出電極３１の接点部３１ａと配線電極５０の接点部５０ａとが接触し電気的に接続される。このように、センサ引出電極３１と配線電極５０とが電気的に接続されることによりセンサ電極３０と回路基板６０が接続され、センサ電極３０に電圧が印加されると共に、人体と静電結合したセンサ電極３０によって人体表面に発生する電位が検出されて回路基板６０に伝達される。 The sensor device according to the present embodiment is installed in the vehicle seat 100 so that the sensor electrode 30 is on the outside as described above. Therefore, when a person sits on the vehicle seat 100, the sensor device according to the present embodiment is pushed by the seated person, and wiring is performed with the contact portion 31a of the sensor extraction electrode 31 in the through hole 23 of the base material 20. The contact portion 50a of the electrode 50 is in contact with the contact portion 50a and is electrically connected. In this way, the sensor lead electrode 31 and the wiring electrode 50 are electrically connected to connect the sensor electrode 30 and the circuit board 60, and a voltage is applied to the sensor electrode 30 and electrostatically coupled to the human body. The potential generated on the surface of the human body is detected by the sensor electrode 30 and transmitted to the circuit board 60.
　具体的には、車両用シート１００に人が座っていない状態では、基材２０の貫通穴２３においては、センサ引出電極３１の接点部３１ａと配線電極５０の接点部５０ａとが離れているため、センサ電極３０と回路基板６０は接続されない。しかしながら、車両用シート１００に人が座っている状態では、基材２０の貫通穴２３において、センサ引出電極３１の接点部３１ａと配線電極５０の接点部５０ａとが接触するため、センサ電極３０と回路基板６０は接続され、センサ電極３０に電圧が印加されるとともに検出された電気信号が出力される。 Specifically, when no person is sitting on the vehicle seat 100, the contact portion 31a of the sensor extraction electrode 31 and the contact portion 50a of the wiring electrode 50 are separated from each other in the through hole 23 of the base material 20. , The sensor electrode 30 and the circuit board 60 are not connected. However, when a person is sitting on the vehicle seat 100, the contact portion 31a of the sensor extraction electrode 31 and the contact portion 50a of the wiring electrode 50 come into contact with each other in the through hole 23 of the base material 20, so that the sensor electrode 30 and the sensor electrode 30 The circuit board 60 is connected, a voltage is applied to the sensor electrode 30, and the detected electric signal is output.
　即ち、本実施の形態においては、基材２０の貫通穴２３において対向しているセンサ引出電極３１の接点部３１ａと配線電極５０の接点部５０ａとにより接点構造が構成されており、スイッチとして機能する。図７は、本実施の形態におけるセンサ装置の機能を模式的に示す図である。図７におけるスイッチ７０は、基材２０の貫通穴２３において対向しているセンサ引出電極３１の接点部３１ａと配線電極５０の接点部５０ａにより形成されており、特に他の部材等を必要とするものではなく、基材２０に貫通穴２３を設け、貫通穴２３において対向するように、センサ引出電極３１の接点部３１ａと配線電極５０の接点部５０ａを設けることにより形成されている。このように、基材２０に貫通穴２３を設け、基材２０の一方の面２１と他方の面２２にセンサ電極３０と配線電極５０を貼り付けることで形成されているため、構成は簡素であり、低コストで製造することができる。 That is, in the present embodiment, the contact structure is composed of the contact portion 31a of the sensor extraction electrode 31 and the contact portion 50a of the wiring electrode 50 facing each other in the through hole 23 of the base material 20, and functions as a switch. To do. FIG. 7 is a diagram schematically showing the function of the sensor device according to the present embodiment. The switch 70 in FIG. 7 is formed by the contact portion 31a of the sensor extraction electrode 31 and the contact portion 50a of the wiring electrode 50 facing each other in the through hole 23 of the base material 20, and particularly requires other members or the like. Instead, the base material 20 is provided with a through hole 23, and the contact portion 31a of the sensor extraction electrode 31 and the contact portion 50a of the wiring electrode 50 are provided so as to face each other in the through hole 23. As described above, since the base material 20 is provided with the through hole 23 and the sensor electrode 30 and the wiring electrode 50 are attached to one surface 21 and the other surface 22 of the base material 20, the configuration is simple. Yes, it can be manufactured at low cost.
　図８は、本実施の形態におけるセンサ装置の回路構成を示す図である。
図８に示されるように、センサ電極３０は、スイッチ７０を介しアンプ７２の入力（＋）に接続されている。アンプ７２の出力は検出部７１に入力しており、更に、アンプ７２の出力はアンプ７２の入力（－）に接続され、シールド電極４０にも接続されている。センサ電極３０と接続されるアンプ７２の入力（＋）側には、５ＧΩの抵抗を介し、２．５Ｖの電圧が印加されている。尚、シールド電極４０はアンプ７２の出力が接続されていてセンサ電極３０の電圧と同じ電圧が印可されるようにしているが、接地電位が印加されているものであってもよい。 FIG. 8 is a diagram showing a circuit configuration of the sensor device according to the present embodiment.
As shown in FIG. 8, the sensor electrode 30 is connected to the input (+) of the amplifier 72 via the switch 70. The output of the amplifier 72 is input to the detection unit 71, and the output of the amplifier 72 is connected to the input (−) of the amplifier 72 and is also connected to the shield electrode 40. A voltage of 2.5 V is applied to the input (+) side of the amplifier 72 connected to the sensor electrode 30 via a 5 GΩ resistor. The shield electrode 40 is connected to the output of the amplifier 72 so that the same voltage as the voltage of the sensor electrode 30 is applied, but a ground potential may be applied.
　本実施の形態では、検出部７１において検出される電圧が、所定の閾値を超える場合には、生体からの電気信号が検出されたものとして、その後の処理を行うが、所定の閾値以下の場合には、生体からの電気信号は検出されなかったものとして処理される。具体的には、車両用シート１００に人が座った場合には、基材２０の貫通穴２３において対向しているセンサ引出電極３１の接点部３１ａと配線電極５０の接点部５０ａとが接触するため、スイッチ７０が導通して、センサ電極３０に電圧が印加されると共に検出された電気信号は、検出部７１まで伝達される。このように検出された電気信号の電圧の値は、所定の閾値を超える値である。しかしながら、車両用シート１００に人が座っていない場合には、基材２０の貫通穴２３において対向しているセンサ引出電極３１の接点部３１ａと配線電極５０の接点部５０ａとは接触してはいないため、スイッチ７０は非導通となり、検出部７１において検出される電圧の値は、配線電極５０で検出される生体からの電気信号であり配線電極５０の面積は僅かである為、所定の閾値以下である。 In the present embodiment, when the voltage detected by the detection unit 71 exceeds a predetermined threshold value, it is assumed that an electric signal from the living body has been detected, and the subsequent processing is performed, but when the voltage is equal to or less than the predetermined threshold value. Is treated as if no electrical signal from the living body was detected. Specifically, when a person sits on the vehicle seat 100, the contact portion 31a of the sensor extraction electrode 31 and the contact portion 50a of the wiring electrode 50, which face each other in the through hole 23 of the base material 20, come into contact with each other. Therefore, the switch 70 is conducted, a voltage is applied to the sensor electrode 30, and the detected electric signal is transmitted to the detection unit 71. The voltage value of the electric signal detected in this way is a value exceeding a predetermined threshold value. However, when no person is sitting on the vehicle seat 100, the contact portion 31a of the sensor extraction electrode 31 and the contact portion 50a of the wiring electrode 50 facing each other in the through hole 23 of the base material 20 may not come into contact with each other. Therefore, the switch 70 becomes non-conducting, and the value of the voltage detected by the detection unit 71 is an electric signal from the living body detected by the wiring electrode 50, and the area of the wiring electrode 50 is small. It is as follows.
　（変形例）
　本実施の形態は、図９に示されるように、基材２０の貫通穴２３の一方の面２１の側に、センサ引出電極３１と第１の配線電極５１を設け、他方の面２２の側に第２の配線電極５２を設けたものであってもよい。尚、第１の配線電極５１は、回路基板６０のセンサ電極接続端子と接続されており、センサ引出電極３１と第１の配線電極５１とは離れている。このセンサ装置においては、車両用シート１００に人が座ると、基材２０の貫通穴２３において、一方の面２１のセンサ引出電極３１と他方の面２２の第２の配線電極５２とが接触し、他方の面２２の第２の配線電極５２と一方の面２１の第１の配線電極５１とが接触する。これにより、センサ電極３０において検出された電気信号は、センサ引出電極３１、第２の配線電極５２、第１の配線電極５１を介し、回路基板６０に伝達される。尚、車両用シート１００に人が座っていない状態では、一方の面２１の側のセンサ引出電極３１及び第１の配線電極５１は、他方の面２２の第２の配線電極５２と離れているため、センサ電極３０は回路基板６０と接続されない。 (Modification example)
In this embodiment, as shown in FIG. 9, the sensor extraction electrode 31 and the first wiring electrode 51 are provided on the side of one surface 21 of the through hole 23 of the base material 20, and the side of the other surface 22. The second wiring electrode 52 may be provided on the surface. The first wiring electrode 51 is connected to the sensor electrode connection terminal of the circuit board 60, and the sensor extraction electrode 31 and the first wiring electrode 51 are separated from each other. In this sensor device, when a person sits on the vehicle seat 100, the sensor extraction electrode 31 on one surface 21 and the second wiring electrode 52 on the other surface 22 come into contact with each other in the through hole 23 of the base material 20. The second wiring electrode 52 on the other surface 22 and the first wiring electrode 51 on the other surface 21 come into contact with each other. As a result, the electric signal detected by the sensor electrode 30 is transmitted to the circuit board 60 via the sensor extraction electrode 31, the second wiring electrode 52, and the first wiring electrode 51. When no person is sitting on the vehicle seat 100, the sensor extraction electrode 31 and the first wiring electrode 51 on the side of one surface 21 are separated from the second wiring electrode 52 on the other surface 22. Therefore, the sensor electrode 30 is not connected to the circuit board 60.
　また、本実施の形態においては、配線電極５０は、図１０に示すように、基材２０の他方の面２２と回路基板６０の他方の面６４とに設けたが、図１１に示されるように、基材２０の他方の面２２と回路基板６０の一方の面６３とに設けられていてもよい。 Further, in the present embodiment, as shown in FIG. 10, the wiring electrode 50 is provided on the other surface 22 of the base material 20 and the other surface 64 of the circuit board 60, as shown in FIG. May be provided on the other surface 22 of the base material 20 and one surface 63 of the circuit board 60.
　更に、本実施の形態においてセンサ電極３０はセンサ引出電極３１を有し、接点部３１ａをセンサ引出電極３１に設けているが、センサ電極３０を矩形状として、これに接点部を設けてもよい。 Further, in the present embodiment, the sensor electrode 30 has a sensor extraction electrode 31, and the contact portion 31a is provided on the sensor extraction electrode 31, but the sensor electrode 30 may be rectangular and a contact portion may be provided therein. ..
　（車両用シートへの設置）
　本実施の形態における車両用シート１００は、図１２に示されるように、ウレタン等により形成されたシート本体部１０１と、シート本体部１０１を覆うシートカバー１０２等により形成されおり、センサ装置１０は、シート本体部１０１とシートカバー１０２との間に設置されている。 (Installation on vehicle seats)
As shown in FIG. 12, the vehicle seat 100 according to the present embodiment is formed of a seat body 101 formed of urethane or the like, a seat cover 102 covering the seat body 101, or the like, and the sensor device 10 is formed. , Is installed between the seat body 101 and the seat cover 102.
　本実施の形態は、シート本体部１０１には、基材２０の貫通穴２３に対応する位置に、他の部分よりも硬い硬質部１０３が設けられていてもよい。硬質部１０３は、シート本体部１０１の他の部分よりもセンサ装置１０側に出っ張っており、左側より車両用シート１００に人が座った際に、シートカバー１０２を介しセンサ引出電極３１の接点部３１ａが右側に押されるが、硬質部１０３は、シート本体部１０１の他の部分よりも硬く変形しにくいため、基材２０の貫通穴２３において対向しているセンサ引出電極３１の接点部３１ａと配線電極５０の接点部５０ａとの接触を確実にすることができる。 In the present embodiment, the sheet main body 101 may be provided with a hard portion 103 that is harder than the other portions at a position corresponding to the through hole 23 of the base material 20. The rigid portion 103 protrudes toward the sensor device 10 from the other portions of the seat body 101, and when a person sits on the vehicle seat 100 from the left side, the contact portion of the sensor extraction electrode 31 via the seat cover 102. Although 31a is pushed to the right, the hard portion 103 is harder and less likely to be deformed than the other portions of the sheet body 101, so that the hard portion 103 and the contact portion 31a of the sensor extraction electrode 31 facing each other in the through hole 23 of the base material 20. The contact of the wiring electrode 50 with the contact portion 50a can be ensured.
　また、図１３に示されるように、シートカバー１０２の内側に、突起部１０２ａが設けられていてもよい。突起部１０２ａは、センサ装置１０の基材２０の貫通穴２３に対応する部分に設けられており、シートカバー１０２の他の部分よりも出っ張っている。これにより、左側より車両用シート１００に人が座った場合に、シートカバー１０２が右側に押される力が加わり、シートカバー１０２の内側に設けられた突起部１０２ａが、センサ引出電極３１の接点部３１ａを押すため、基材２０の貫通穴２３において対向しているセンサ引出電極３１の接点部３１ａと配線電極５０の接点部５０ａとの接触を確実にすることができる。 Further, as shown in FIG. 13, a protrusion 102a may be provided inside the seat cover 102. The protrusion 102a is provided in a portion corresponding to the through hole 23 of the base material 20 of the sensor device 10, and protrudes from the other portion of the seat cover 102. As a result, when a person sits on the vehicle seat 100 from the left side, a force is applied to push the seat cover 102 to the right side, and the protrusion 102a provided inside the seat cover 102 becomes the contact portion of the sensor extraction electrode 31. Since the 31a is pushed, the contact portion 31a of the sensor extraction electrode 31 facing the through hole 23 of the base material 20 and the contact portion 50a of the wiring electrode 50 can be ensured to come into contact with each other.
　〔第２の実施の形態〕
　次に、第２の実施の形態におけるセンサ装置について、図１４から図１６に基づき説明する。図１４は本実施の形態におけるセンサ装置の上面図であり、図１５は底面図であり、図１６は、図１４における一点鎖線１４Ａ－１４Ｂにおいて切断した断面図である。 [Second Embodiment]
Next, the sensor device according to the second embodiment will be described with reference to FIGS. 14 to 16. 14 is a top view of the sensor device according to the present embodiment, FIG. 15 is a bottom view, and FIG. 16 is a cross-sectional view taken along the alternate long and short dash line 14A-14B in FIG.
　本実施の形態におけるセンサ装置は、センサ電極１３０及びシールド電極４０の周囲を囲むように、第１の配線電極１５１、第２の配線電極１５２、第３の配線電極１５３、第４の配線電極１５４が設けられており、更に、回路基板６０と接続される第５の配線電極１５５が設けられている。 The sensor device according to the present embodiment has a first wiring electrode 151, a second wiring electrode 152, a third wiring electrode 153, and a fourth wiring electrode 154 so as to surround the sensor electrode 130 and the shield electrode 40. Is provided, and a fifth wiring electrode 155 connected to the circuit board 60 is provided.
　センサ電極１３０は、基材２０の一方の面２１に形成されており、センサ電極本体部は、第１の実施の形態におけるセンサ電極３０と同様のものである。センサ電極１３０には、基材の一方の面２１において右上方向に延びるセンサ引出電極１３１が形成されており、センサ引出電極１３１の端には接点部１３１ａが設けられている。 The sensor electrode 130 is formed on one surface 21 of the base material 20, and the sensor electrode main body is the same as the sensor electrode 30 in the first embodiment. The sensor electrode 130 is formed with a sensor extraction electrode 131 extending in the upper right direction on one surface 21 of the base material, and a contact portion 131a is provided at the end of the sensor extraction electrode 131.
　第１の配線電極１５１は、基材２０の他方の面２２に設けられている。第１の配線電極１５１は、図１５に図示するシールド電極４０の上側に設けられており、横方向に延びるように形成されている。第１の配線電極１５１の両端には接点部１５１ａ及び１５１ｂが設けられている。 The first wiring electrode 151 is provided on the other surface 22 of the base material 20. The first wiring electrode 151 is provided on the upper side of the shield electrode 40 shown in FIG. 15, and is formed so as to extend in the lateral direction. Contact portions 151a and 151b are provided at both ends of the first wiring electrode 151.
　第２の配線電極１５２は、基材２０の一方の面２１に設けられている。第２の配線電極１５２は、図１４に図示するセンサ電極１３０の左側に設けられており、左上から左側の真ん中まで縦方向に延びるように形成されている。第２の配線電極１５２の両端には接点部１５２ａ及び１５２ｂが設けられている。 The second wiring electrode 152 is provided on one surface 21 of the base material 20. The second wiring electrode 152 is provided on the left side of the sensor electrode 130 shown in FIG. 14, and is formed so as to extend in the vertical direction from the upper left to the center of the left side. Contact portions 152a and 152b are provided at both ends of the second wiring electrode 152.
　第３の配線電極１５３は、基材２０の他方の面２２に設けられている。第３の配線電極１５３は、図１５に図示するシールド電極４０の右側に設けられており、右側の真ん中から右下まで縦方向に延びるように形成されている。第３の配線電極１５３の両端には接点部１５３ａ及び１５３ｂが設けられている。 The third wiring electrode 153 is provided on the other surface 22 of the base material 20. The third wiring electrode 153 is provided on the right side of the shield electrode 40 shown in FIG. 15, and is formed so as to extend in the vertical direction from the center of the right side to the lower right. Contact portions 153a and 153b are provided at both ends of the third wiring electrode 153.
　第４の配線電極１５４は、基材２０の一方の面２１に設けられている。第４の配線電極１５４は、図１４に図示するセンサ電極１３０の下側に設けられており、横方向に延びるように形成されている。第４の配線電極１５４の両端には接点部１５４ａ及び１５４ｂが設けられている。 The fourth wiring electrode 154 is provided on one surface 21 of the base material 20. The fourth wiring electrode 154 is provided below the sensor electrode 130 shown in FIG. 14, and is formed so as to extend in the lateral direction. Contact portions 154a and 154b are provided at both ends of the fourth wiring electrode 154.
　第５の配線電極１５５は、基材２０の他方の面２２に設けられている。第５の配線電極１５５は、図１５に図示するシールド電極４０の左側に設けられており、端部は回路基板６０に設けられたセンサ電極接続端子６１とハンダ等により接続されている。第５の配線電極１５５の回路基板６０のセンサ電極接続端子６１と接続されている側とは反対側の端には、接点部１５５ａが設けられている。 The fifth wiring electrode 155 is provided on the other surface 22 of the base material 20. The fifth wiring electrode 155 is provided on the left side of the shield electrode 40 shown in FIG. 15, and the end portion is connected to the sensor electrode connection terminal 61 provided on the circuit board 60 by solder or the like. A contact portion 155a is provided at an end of the circuit board 60 of the fifth wiring electrode 155 opposite to the side connected to the sensor electrode connection terminal 61.
　本実施の形態においては、図１６に示されるように、基材２０には、貫通穴１２３が設けられており、基材２０の一方の面２１の側にセンサ引出電極１３１の接点部１３１ａ、他方の面２２の側に第１の配線電極１５１の接点部１５１ａが設けられており、接点構造となっている。従って、力が加えられていない状態では、基材２０の貫通穴１２３において対向しているセンサ引出電極１３１の接点部１３１ａと第１の配線電極１５１の接点部１５１ａとは離れているが、基材２０の一方の面２１の側よりセンサ引出電極１３１の接点部１３１ａが押されると、センサ引出電極１３１の接点部１３１ａと第１の配線電極１５１の接点部１５１ａとが接触し、電気的に接続される。 In the present embodiment, as shown in FIG. 16, the base material 20 is provided with a through hole 123, and the contact portion 131a of the sensor extraction electrode 131 is provided on the side of one surface 21 of the base material 20. A contact portion 151a of the first wiring electrode 151 is provided on the side of the other surface 22, and has a contact structure. Therefore, in a state where no force is applied, the contact portion 131a of the sensor extraction electrode 131 facing the through hole 123 of the base material 20 and the contact portion 151a of the first wiring electrode 151 are separated from each other, but the base. When the contact portion 131a of the sensor extraction electrode 131 is pushed from the side of one surface 21 of the material 20, the contact portion 131a of the sensor extraction electrode 131 and the contact portion 151a of the first wiring electrode 151 come into contact with each other and electrically. Be connected.
　同様に、基材２０には、第１の配線電極１５１の接点部１５１ｂと第２の配線電極１５２の接点部１５２ａとの間にも、不図示の貫通穴が設けられており、接点構造となっている。また、第２の配線電極１５２の接点部１５２ｂと第３の配線電極１５３の接点部１５３ａとの間にも、基材２０には、不図示の貫通穴が設けられており、接点構造となっている。第３の配線電極１５３の接点部１５３ｂと第４の配線電極１５４の接点部１５４ａとの間にも、基材２０には、不図示の貫通穴が設けられており、接点構造となっている。第４の配線電極１５４の接点部１５４ｂと第５の配線電極１５５の接点部１５５ａとの間にも、基材２０には、不図示の貫通穴が設けられており、接点構造となっている。 Similarly, the base material 20 is also provided with a through hole (not shown) between the contact portion 151b of the first wiring electrode 151 and the contact portion 152a of the second wiring electrode 152, and has a contact structure. It has become. Further, the base material 20 is also provided with a through hole (not shown) between the contact portion 152b of the second wiring electrode 152 and the contact portion 153a of the third wiring electrode 153 to form a contact structure. ing. The base material 20 is also provided with a through hole (not shown) between the contact portion 153b of the third wiring electrode 153 and the contact portion 154a of the fourth wiring electrode 154 to form a contact structure. .. The base material 20 is also provided with a through hole (not shown) between the contact portion 154b of the fourth wiring electrode 154 and the contact portion 155a of the fifth wiring electrode 155, and has a contact structure. ..
　よって、本実施の形態におけるセンサ装置においては、５つの接点構造が設けられている。本実施の形態においては、車両用シート１００に人が所望の姿勢で座った場合には、上記の５つの接点構造における対向する接点部同士が接触した場合に、電気的に接続され、センサ電極１３０において検出された電気信号が回路基板６０側に伝達される。 Therefore, the sensor device according to the present embodiment is provided with five contact structures. In the present embodiment, when a person sits on the vehicle seat 100 in a desired posture, the sensor electrodes are electrically connected when the opposing contact portions in the above five contact structures come into contact with each other. The electric signal detected in 130 is transmitted to the circuit board 60 side.
　即ち、車両用シート１００に背中の全面が密着した状態で人が座った場合など所望の姿勢で座った場合には、センサ引出電極１３１の接点部１３１ａと第１の配線電極１５１の接点部１５１ａとが接触し、第１の配線電極１５１の接点部１５１ｂと第２の配線電極１５２の接点部１５２ａとが接触し、第２の配線電極１５２の接点部１５２ｂと第３の配線電極１５３の接点部１５３ａとが接触し、第３の配線電極１５３の接点部１５３ｂと第４の配線電極１５４の接点部１５４ａとが接触し、第４の配線電極１５４の接点部１５４ｂと第５の配線電極１５５の接点部１５５ａとが接触する。 That is, when a person sits in a desired posture such as when a person sits on the vehicle seat 100 with the entire back surface in close contact with the vehicle seat 100, the contact portion 131a of the sensor extraction electrode 131 and the contact portion 151a of the first wiring electrode 151a. Contact, the contact portion 151b of the first wiring electrode 151 and the contact portion 152a of the second wiring electrode 152 come into contact with each other, and the contact portion 152b of the second wiring electrode 152 and the contact portion of the third wiring electrode 153. The contact portion 153a comes into contact with the contact portion 153b of the third wiring electrode 153 and the contact portion 154a of the fourth wiring electrode 154, and the contact portion 154b of the fourth wiring electrode 154 and the fifth wiring electrode 155 come into contact with each other. The contact portion 155a of the above comes into contact with the contact portion 155a.
　従って、センサ電極１３０において検出された電気信号は、センサ引出電極１３１、第１の配線電極１５１、第２の配線電極１５２、第３の配線電極１５３、第４の配線電極１５４、第５の配線電極１５５を介し、回路基板６０に伝達される。 Therefore, the electric signal detected in the sensor electrode 130 is the sensor lead electrode 131, the first wiring electrode 151, the second wiring electrode 152, the third wiring electrode 153, the fourth wiring electrode 154, and the fifth wiring. It is transmitted to the circuit board 60 via the electrode 155.
　本実施の形態においては、センサ装置の全面において所望の加重が加わっている場合にのみ、センサ電極１３０において検出された電気信号が回路基板６０側に伝達される。また、背中の一部が車両用シート１００から離れて座るなどセンサ装置の全面において所望の加重が加わっていないなどして、正確な生体情報の検出結果が得られないと予想される場合には閾値以下の検出信号となるので、より正確な検出が可能となる。 In the present embodiment, the electric signal detected by the sensor electrode 130 is transmitted to the circuit board 60 side only when a desired load is applied to the entire surface of the sensor device. In addition, when it is expected that accurate biometric information detection results cannot be obtained because a desired load is not applied to the entire surface of the sensor device, such as when a part of the back sits away from the vehicle seat 100. Since the detection signal is below the threshold value, more accurate detection is possible.
　尚、上記以外の内容については、第１の実施の形態と同様である。 The contents other than the above are the same as those in the first embodiment.
　〔第３の実施の形態〕
　次に、第３の実施の形態におけるセンサ装置について、図１７から図１９に基づき説明する。図１７は本実施の形態におけるセンサ装置の上面図であり、図１８は底面図であり、図１９は、図１７における一点鎖線１７Ａ－１７Ｂにおいて切断した断面図である。 [Third Embodiment]
Next, the sensor device according to the third embodiment will be described with reference to FIGS. 17 to 19. FIG. 17 is a top view of the sensor device according to the present embodiment, FIG. 18 is a bottom view, and FIG. 19 is a cross-sectional view taken along the alternate long and short dash line 17A-17B in FIG.
　本実施の形態におけるセンサ装置は、シールド電極２４０と回路基板６０との間にも接点構造を設けたものである。シールド電極２４０側にも接点構造を設けることにより、人が座っていない等の検出を行う必要が無い際にシールド電極２４０から静電気ノイズが流入した場合であっても、回路基板６０に設けられている検出部等の回路素子が破損することを防ぐことができる。 The sensor device in this embodiment also has a contact structure provided between the shield electrode 240 and the circuit board 60. By providing a contact structure on the shield electrode 240 side as well, even if electrostatic noise flows in from the shield electrode 240 when it is not necessary to detect that a person is not sitting, the contact structure is provided on the circuit board 60. It is possible to prevent the circuit elements such as the detection unit from being damaged.
　本実施の形態においては、シールド電極２４０は、基材２０の他方の面２２に形成されており、シールド電極本体部は、第１の実施の形態におけるシールド電極４０と同様のものである。シールド電極２４０には、基材２０の他方の面２２において右側に延びるシールド引出電極２４１が形成されており、シールド引出電極２４１の端には接点部２４１ａが設けられている。 In the present embodiment, the shield electrode 240 is formed on the other surface 22 of the base material 20, and the shield electrode main body is the same as the shield electrode 40 in the first embodiment. The shield electrode 240 is formed with a shield extraction electrode 241 extending to the right on the other surface 22 of the base material 20, and a contact portion 241a is provided at the end of the shield extraction electrode 241.
　第６の配線電極２５６は、基材２０の一方の面２１に設けられている。第６の配線電極２５６は、図１７に図示するセンサ電極１３０の右側に設けられており、縦方向に延びるように形成されている。第６の配線電極２５６の両端には接点部２５６ａ及び２５６ｂが設けられている。 The sixth wiring electrode 256 is provided on one surface 21 of the base material 20. The sixth wiring electrode 256 is provided on the right side of the sensor electrode 130 shown in FIG. 17, and is formed so as to extend in the vertical direction. Contact portions 256a and 256b are provided at both ends of the sixth wiring electrode 256.
　第７の配線電極２５７は、基材２０の他方の面２２に設けられている。第７の配線電極２５７は、図１８に図示するシールド電極２４０の左側に設けられており、端部は回路基板６０に設けられたシールド電極接続端子６２とハンダ等により接続されている。第７の配線電極２５７の回路基板６０のシールド電極接続端子６２と接続されている側とは反対側の端には、接点部２５７ａが設けられている。 The seventh wiring electrode 257 is provided on the other surface 22 of the base material 20. The seventh wiring electrode 257 is provided on the left side of the shield electrode 240 shown in FIG. 18, and the end portion is connected to the shield electrode connection terminal 62 provided on the circuit board 60 by solder or the like. A contact portion 257a is provided at an end of the circuit board 60 of the seventh wiring electrode 257 opposite to the side connected to the shield electrode connection terminal 62.
　本実施の形態においては、図１９に示されるように、基材２０には、貫通穴２２３、２２４が設けられている。貫通穴２２３が形成されている部分では、基材２０の一方の面２１の側には、第６の配線電極２５６の接点部２５６ａが設けられており、他方の面２２の側には、シールド引出電極２４１の接点部２４１ａが設けられており、接点構造となっている。また、貫通穴２２４が形成されている部分では、基材２０の一方の面２１の側には、第６の配線電極２５６の接点部２５６ｂが設けられており、他方の面２２の側には、第７の配線電極２５７の接点部２５７ａが設けられており、接点構造となっている。 In the present embodiment, as shown in FIG. 19, the base material 20 is provided with through holes 223 and 224. In the portion where the through hole 223 is formed, the contact portion 256a of the sixth wiring electrode 256 is provided on the side of one surface 21 of the base material 20, and the shield is provided on the side of the other surface 22. A contact portion 241a of the extraction electrode 241 is provided to form a contact structure. Further, in the portion where the through hole 224 is formed, the contact portion 256b of the sixth wiring electrode 256 is provided on the side of one surface 21 of the base material 20, and on the side of the other surface 22. , The contact portion 257a of the seventh wiring electrode 257 is provided, and has a contact structure.
　従って、車両用シート１００に人が座っていない状態では、基材２０の貫通穴２２３において対向している第６の配線電極２５６の接点部２５６ａとシールド引出電極２４１の接点部２４１ａは離れており、基材２０の貫通穴２２４において対向している第６の配線電極２５６の接点部２５６ｂと第７の配線電極２５７の接点部２５７ａは離れている。 Therefore, when no person is sitting on the vehicle seat 100, the contact portion 256a of the sixth wiring electrode 256 and the contact portion 241a of the shield extraction electrode 241 facing each other in the through hole 223 of the base material 20 are separated from each other. The contact portion 256b of the sixth wiring electrode 256 and the contact portion 257a of the seventh wiring electrode 257 facing each other in the through hole 224 of the base material 20 are separated from each other.
　車両用シート１００に人が座ると、基材２０の一方の面２１の側よりセンサ引出電極１３１が押され、第６の配線電極２５６の接点部２５６ａとシールド引出電極２４１の接点部２４１ａとが接触し、第６の配線電極２５６の接点部２５６ｂと第７の配線電極２５７の接点部２５７ａとが接触し、電気的に接続される。 When a person sits on the vehicle seat 100, the sensor extraction electrode 131 is pushed from the side of one surface 21 of the base material 20, and the contact portion 256a of the sixth wiring electrode 256 and the contact portion 241a of the shield extraction electrode 241 come together. When they come into contact with each other, the contact portion 256b of the sixth wiring electrode 256 and the contact portion 257a of the seventh wiring electrode 257 come into contact with each other and are electrically connected.
　尚、上記以外の内容については、第２の実施の形態と同様である。 The contents other than the above are the same as those in the second embodiment.
　〔第４の実施の形態〕
　次に、第４の実施の形態について説明する。本実施の形態の車両用シートは、図２０～図２４に示されるように、第１の実施の形態におけるセンサ装置１０が設置された車両用シート１００のシート本体部１０１またはシートカバー１０２に特徴を有するものである。尚、センサ装置１０は、車両用シート１００のシート本体部１０１とシートカバー１０２との間に設置される。 [Fourth Embodiment]
Next, a fourth embodiment will be described. As shown in FIGS. 20 to 24, the vehicle seat of the present embodiment is characterized by the seat body 101 or the seat cover 102 of the vehicle seat 100 in which the sensor device 10 of the first embodiment is installed. It has. The sensor device 10 is installed between the seat body 101 of the vehicle seat 100 and the seat cover 102.
　本実施の形態の１つは、図２０に示されるように、シートカバー１０２の内側に、センサ装置１０が入る窪み１０２ｂが設けられており、図２１に示されるように、センサ装置１０は、シートカバー１０２の内側の窪み１０２ｂに入れられている。 In one of the present embodiments, as shown in FIG. 20, a recess 102b in which the sensor device 10 is inserted is provided inside the seat cover 102, and as shown in FIG. 21, the sensor device 10 is provided with a recess 102b. It is placed in the recess 102b inside the seat cover 102.
　窪み１０２ｂの部分は他の部分よりもシートカバー１０２が薄いため、車両用シート１００に人が座った際に、センサ装置１０と人との距離が短くなり、人とセンサ装置１０との静電結合の状態が安定化し、より正確に車両用シートに座った人の生体情報を得ることができる。また、シートカバー１０２の窪み１０２ｂにセンサ装置１０を入れることにより、センサ装置１０の位置が安定化し、使用している間に、センサ装置１０がシート本体部１０１とシートカバー１０２との間で動いてしまうことを防ぐことができる。 Since the seat cover 102 of the recess 102b is thinner than the other parts, when a person sits on the vehicle seat 100, the distance between the sensor device 10 and the person becomes shorter, and the static electricity between the person and the sensor device 10 becomes shorter. The state of connection is stabilized, and the biometric information of the person sitting on the vehicle seat can be obtained more accurately. Further, by inserting the sensor device 10 into the recess 102b of the seat cover 102, the position of the sensor device 10 is stabilized, and the sensor device 10 moves between the seat body 101 and the seat cover 102 during use. It is possible to prevent it from being lost.
　また、本実施の形態は、図２２に示されるように、シート本体部１０１において、センサ装置１０が設置される部分は、他の部分よりも硬い硬質部１０１ａにより形成されていてもよい。硬質部１０１ａは、例えば、硬質ウレタン等により形成する。このようにシート本体部１０１において、センサ装置１０が設置される部分を他の部分よりも硬い硬質部１０１ａにより形成することにより、車両用シートに人が座った場合であっても、硬質部１０１ａは硬いため、他の部分と比べて、あまり変形することはなく、人とセンサ装置１０との静電結合がより確実なものとなる。 Further, in the present embodiment, as shown in FIG. 22, the portion of the seat body 101 on which the sensor device 10 is installed may be formed of a hard portion 101a that is harder than the other portions. The hard portion 101a is formed of, for example, hard urethane or the like. In this way, in the seat body 101, the portion where the sensor device 10 is installed is formed by the rigid portion 101a which is harder than the other portions, so that even when a person sits on the vehicle seat, the rigid portion 101a Since is hard, it does not deform much as compared with other parts, and the electrostatic coupling between the person and the sensor device 10 becomes more reliable.
　また、本実施の形態は、図２３に示されるように、シート本体部１０１において、センサ装置１０が設置される部分が他の部分よりもセンサ装置１０側に出っ張った凸部１０１ｂが設けられているものであってもよい。このようにシート本体部１０１において、センサ装置１０が設置される部分に凸部１０１ｂを設けることにより、車両用シートに人が座った際に、特に、凸部１０１ｂが設けられている部分に人の荷重が集中するため、人とセンサ装置１０との静電結合がより確実なものとなる。 Further, in the present embodiment, as shown in FIG. 23, the seat main body 101 is provided with a convex portion 101b in which the portion where the sensor device 10 is installed protrudes toward the sensor device 10 side from the other portions. It may be the one that exists. In this way, by providing the convex portion 101b in the portion where the sensor device 10 is installed in the seat main body portion 101, when a person sits on the vehicle seat, the person is particularly provided in the portion where the convex portion 101b is provided. Since the load is concentrated, the electrostatic coupling between the person and the sensor device 10 becomes more reliable.
　また、本実施の形態は、図２４に示されるように、シート本体部１０１において、センサ装置１０が設置される部分の奥に、金属や硬い樹脂材料により形成されたシート構造部材１０４が位置するようにセンサ装置１０を設置してもよい。シート構造部材１０４は、シート本体部１０１よりも硬い材料により形成されており、車両用シートに人が座った場合に、シート本体部１０１は、シート構造部材１０４が設けられている部分は薄いため、他の部分よりも変形が少ない。このため、センサ装置１０が設置されている部分に人の荷重が集中し、人とセンサ装置１０との静電結合がより確実なものとなる。 Further, in the present embodiment, as shown in FIG. 24, in the seat main body 101, the seat structural member 104 formed of a metal or a hard resin material is located behind the portion where the sensor device 10 is installed. The sensor device 10 may be installed as described above. The seat structural member 104 is made of a material harder than the seat main body 101, and when a person sits on the vehicle seat, the seat main body 101 is thin because the portion where the seat structural member 104 is provided is thin. , Less deformation than other parts. Therefore, the load of the person is concentrated on the portion where the sensor device 10 is installed, and the electrostatic coupling between the person and the sensor device 10 becomes more reliable.
　以上、実施の形態について詳述したが、特定の実施形態に限定されるものではなく、特許請求の範囲に記載された範囲内において、種々の変形及び変更が可能である。 Although the embodiments have been described in detail above, the embodiments are not limited to the specific embodiments, and various modifications and changes can be made within the scope of the claims.
　本国際出願は、２０１９年９月１２日に出願した日本国特許出願第２０１９－１６６３０６号に基づく優先権を主張するものであり、当該出願の全内容を本国際出願に援用する。 This international application claims priority based on Japanese Patent Application No. 2019-166306 filed on September 12, 2019, and the entire contents of the application will be incorporated into this international application.
１０　　　　センサ装置
２０　　　　基材
２１　　　　一方の面
２２　　　　他方の面
２３　　　　貫通穴
３０　　　　センサ電極
３１　　　　センサ引出電極
３１ａ　　　接点部
４０　　　　シールド電極
５０　　　　配線電極
５０ａ　　　接点部
６０　　　　回路基板
６１　　　　センサ電極接続端子
６２　　　　シールド電極接続端子
１００　　　車両用シート
１００ａ　　背もたれ部
１００ｂ　　座部
１０１　　　シート本体部
１０２　　　シートカバー 10 Sensor device 20 Base material 21 One surface 22 Another surface 23 Through hole 30 Sensor electrode 31 Sensor extraction electrode 31a Contact electrode 40 Shield electrode 50 Wiring electrode 50a Contact section 60 Circuit board 61 Sensor electrode connection terminal 62 Shield electrode connection terminal 100 Vehicle seat 100a Backrest 100b Seat 101 Seat body 102 Seat cover

Claims (11)

  1. 　可撓性と、絶縁性を有するシート状の基材と、
    　前記基材の一方の面に設けられた第１の電極と、
    　前記基材に設けられた貫通穴と、
    　前記基材の他方の面に設けられており、回路基板と接続されている配線電極と、
    　を有し、
    　前記貫通穴の前記一方の面の側には、前記第１の電極と接続された接点部が設けられており、
    　前記貫通穴の前記他方の面の側には、配線電極と接続された接点部が設けられていることを特徴とするセンサ装置。     A sheet-like base material with flexibility and insulation,
    A first electrode provided on one surface of the base material and
    Through holes provided in the base material and
    A wiring electrode provided on the other surface of the base material and connected to the circuit board,
    Have,
    A contact portion connected to the first electrode is provided on the side of the one surface of the through hole.
    A sensor device characterized in that a contact portion connected to a wiring electrode is provided on the side of the other surface of the through hole.
  2. 　前記基材の他方の面には、第２の電極が設けられており、
    　前記第２の電極が設けられている領域内の前記一方の面に前記第１の電極が形成されていることを特徴とする請求項１に記載のセンサ装置。     A second electrode is provided on the other surface of the base material.
    The sensor device according to claim 1, wherein the first electrode is formed on one of the surfaces in the region where the second electrode is provided.
  3. 　前記第１の電極及び前記第２の電極は、繊維の表面に導体がコートされた導電布、または、導電メッシュにより形成されていることを特徴とする請求項２に記載のセンサ装置。 The sensor device according to claim 2, wherein the first electrode and the second electrode are formed of a conductive cloth or a conductive mesh in which a conductor is coated on the surface of a fiber.
  4. 　前記第１の電極及び前記第２の電極の周囲には、前記第１の電極と前記回路基板とを電気的に接続するための第１の配線電極及び第２の配線電極を有しており、
    　前記基材において、前記一方の面に設けられた前記第１の配線電極の端部と、前記他方の面に設けられた前記第２の配線電極の端部との間には、貫通穴が設けられていることを特徴とする請求項２または３に記載のセンサ装置。     Around the first electrode and the second electrode, a first wiring electrode and a second wiring electrode for electrically connecting the first electrode and the circuit board are provided. ,
    In the base material, a through hole is provided between the end portion of the first wiring electrode provided on the one surface and the end portion of the second wiring electrode provided on the other surface. The sensor device according to claim 2 or 3, wherein the sensor device is provided.
  5. 　前記基材の前記他方の面に設けられた前記第２の電極と接続された接点部と、
    　前記基材の前記一方の面に設けられた端部に接点部を有する他の配線電極と、
    　を有し、
    　前記基材において、前記第２の電極と接続された接点部と、前記他の配線電極の接点部との間には、貫通穴が設けられていることを特徴とする請求項２から４のいずれかに記載のセンサ装置。     A contact portion connected to the second electrode provided on the other surface of the base material, and
    With another wiring electrode having a contact portion at an end provided on the one surface of the base material,
    Have,
    The second to fourth aspects of the base material, wherein a through hole is provided between the contact portion connected to the second electrode and the contact portion of the other wiring electrode. The sensor device according to any one.
  6. 　前記基材は、不織布であることを特徴とする請求項１から５のいずれかに記載のセンサ装置。 The sensor device according to any one of claims 1 to 5, wherein the base material is a non-woven fabric.
  7. 　前記回路基板には検出部が設けられており、
    　前記配線電極は前記検出部と接続されており、
    　前記検出部において検出される電圧の値が、所定の閾値を超える場合には、前記第１の電極において電気信号が検出されたものとすることを特徴とする請求項１から６のいずれかに記載のセンサ装置。     The circuit board is provided with a detection unit.
    The wiring electrode is connected to the detection unit, and the wiring electrode is connected to the detection unit.
    According to any one of claims 1 to 6, when the value of the voltage detected by the detection unit exceeds a predetermined threshold value, it is assumed that an electric signal is detected at the first electrode. The sensor device described.
  8. 　請求項１から７のいずれかに記載のセンサ装置と、
    　シート本体部と、
    　前記シート本体部を覆うシートカバーと、
    　を有し、
    　前記センサ装置は、前記シート本体部と前記シートカバーの間に設置されている車両用シート。     The sensor device according to any one of claims 1 to 7.
    Seat body and
    A seat cover that covers the seat body and
    Have,
    The sensor device is a vehicle seat installed between the seat body and the seat cover.
  9. 　前記シート本体部において、前記センサ装置における接点部に対向する位置には、前記シート本体部の他の部分よりも硬い硬質部が設けられていることを特徴とする請求項８に記載の車両用シート。 The vehicle according to claim 8, wherein a hard portion is provided in the seat body portion at a position facing the contact portion in the sensor device, which is harder than the other portion of the seat body portion. Sheet.
  10. 　前記硬質部は、前記シート本体部の他の部分よりも、前記センサ装置側に出っ張っていることを特徴とする請求項９に記載の車両用シート。 The vehicle seat according to claim 9, wherein the hard portion protrudes toward the sensor device side with respect to other portions of the seat main body portion.
  11. 　前記シートカバーの内側において、前記センサ装置における接点部に対向する位置には、突起部が設けられていることを特徴とする請求項８に記載の車両用シート。 The vehicle seat according to claim 8, wherein a protrusion is provided inside the seat cover at a position facing the contact portion in the sensor device.
PCT/JP2020/011803 2019-09-12 2020-03-17 Sensor device and seat for vehicle WO2021049071A1 (en)

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Citations (5)

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JP2000322976A (en) * 1999-05-14 2000-11-24 Fujikura Ltd Seating sensor
JP2003284697A (en) * 2002-03-29 2003-10-07 Yamaguchi Prefecture Biological signal measuring sensor and apparatus for the same
JP2016529991A (en) * 2013-08-14 2016-09-29 カピカル・ゲーエムベーハーＣａｐｉｃａｌ ＧｍｂＨ Woven capacitive electrode, method for its production and use
JP2018019762A (en) * 2016-08-01 2018-02-08 帝人株式会社 Sensor sheet
WO2019116919A1 (en) * 2017-12-15 2019-06-20 アルプスアルパイン株式会社 Sensor device, production method therefor, and vehicle seat

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Publication number Priority date Publication date Assignee Title
JPH09245563A (en) * 1996-03-12 1997-09-19 Hokuriku Electric Ind Co Ltd Membrane switch
JP2000311564A (en) 1999-04-28 2000-11-07 Fujikura Ltd Seating detection system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000322976A (en) * 1999-05-14 2000-11-24 Fujikura Ltd Seating sensor
JP2003284697A (en) * 2002-03-29 2003-10-07 Yamaguchi Prefecture Biological signal measuring sensor and apparatus for the same
JP2016529991A (en) * 2013-08-14 2016-09-29 カピカル・ゲーエムベーハーＣａｐｉｃａｌ ＧｍｂＨ Woven capacitive electrode, method for its production and use
JP2018019762A (en) * 2016-08-01 2018-02-08 帝人株式会社 Sensor sheet
WO2019116919A1 (en) * 2017-12-15 2019-06-20 アルプスアルパイン株式会社 Sensor device, production method therefor, and vehicle seat

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