WO2015002076A1 - Siège de véhicule - Google Patents

Siège de véhicule Download PDF

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Publication number
WO2015002076A1
WO2015002076A1 PCT/JP2014/067116 JP2014067116W WO2015002076A1 WO 2015002076 A1 WO2015002076 A1 WO 2015002076A1 JP 2014067116 W JP2014067116 W JP 2014067116W WO 2015002076 A1 WO2015002076 A1 WO 2015002076A1
Authority
WO
WIPO (PCT)
Prior art keywords
occupant
spring
vehicle seat
spring member
detection sensor
Prior art date
Application number
PCT/JP2014/067116
Other languages
English (en)
Japanese (ja)
Inventor
健介 溝井
創 大野
Original Assignee
テイ・エス テック株式会社
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 テイ・エス テック株式会社 filed Critical テイ・エス テック株式会社
Publication of WO2015002076A1 publication Critical patent/WO2015002076A1/fr

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Classifications

    • 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
    • B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
    • 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
    • B60N2/70—Upholstery springs ; Upholstery
    • B60N2/7094—Upholstery springs

Definitions

  • the present invention relates to a vehicle seat including an occupant detection sensor that detects the presence or absence of an occupant.
  • occupant detection sensors that detects whether an occupant is sitting or not. These occupant detection sensors are used to detect the presence or absence of an occupant in order to operate a seat belt reminder or an occupant restraint device, and are often provided between a cushion member made of urethane foam and the skin. ing.
  • Patent Document 1 a sensor unit for detecting an occupant to a seat spring provided under the cushion member.
  • This sensor unit has a structure in which a film type pressure sensor is built in a thin case-like base plate.
  • the sensor unit of Patent Document 1 requires a base plate, which is expensive and has a problem that the structure is complicated.
  • a vehicle seat includes a seat frame, a plurality of spring members installed on the seat frame, and a cushion member disposed on the occupant side of the plurality of spring members.
  • a vehicle seat comprising: a resin coupling member that couples the plurality of spring members; and a flexible occupant detection sensor attached to the coupling member, wherein the occupant sits on the vehicle seat
  • the occupant detection sensor is configured to detect the presence or absence of an occupant by being sandwiched between the connecting member and the cushion member.
  • the occupant detection sensor has a base and a detection part extending from the base, and the connecting member has a first portion where the base is disposed on a surface on the occupant side, It is desirable that a second part facing the detection unit is provided, the first part protrudes closer to the cushion member than the second part, and the second part is separated from the cushion member.
  • the second portion where the detection unit is disposed is separated from the cushion member, it is not detected that the passenger is present only by applying a small load to the cushion member, and the presence or absence of the passenger is accurately detected. Can be detected.
  • the occupant detection sensor has a base and a detection part extending from the base, and the connecting member has a planar shape in which the occupant detection sensor is attached to a surface on the occupant side.
  • the sensor member is provided, and the cushion member is provided with a third part facing the base part and a fourth part facing the detection part, and the third part is more than the fourth part. It is desirable that the sensor protrudes toward the sensor installation part, and the fourth part is separated from the sensor installation part.
  • the fourth portion facing the detection unit is separated from the sensor installation unit, it is not detected that there is an occupant just by applying a small load to the cushion member, and the presence or absence of the occupant is accurately detected. can do.
  • the connecting member is preferably formed so as to be integrated with the spring member.
  • the connecting member is integrated with the spring member, the posture of the connecting member is stable, and the sensitivity when the occupant detection sensor is sandwiched between the connecting member and the cushion member is stable. To do.
  • each of the plurality of spring members is a spring bent in a zigzag, and has a plurality of U-shaped portions that open in one direction by bending, and the plurality of spring members are A first spring member and a second spring member disposed adjacent to the first spring member, wherein an opening of the U-shaped portion of the first spring member and the second spring member It arrange
  • the openings of the two U-shaped portions are opposed to each other, and the connecting member that connects the bottom portions of the two U-shaped portions is relatively long. Therefore, the installation surface of the occupant detection sensor can be increased, and the occupant detection sensor can be easily attached.
  • the detection unit is disposed at a position shifted from the center in the left-right direction of the seat cushion.
  • the occupant detection sensor can be a sensor whose output signal switches between ON and OFF depending on the presence or absence of the occupant.
  • the presence or absence of an occupant can be detected accurately and at low cost by using a sensor that switches the signal output between ON and OFF depending on the presence or absence of an occupant, rather than a sensor that outputs a value of a load applied to the sensor. .
  • the portion of the connecting member to which the occupant detection sensor is attached is disposed closer to the occupant side than the plurality of spring members.
  • the occupant detection sensor since the part to which the occupant detection sensor is attached is arranged on the occupant side with respect to the plurality of spring members, the occupant detection sensor can reliably detect the load of the occupant, and when detecting the occupant The sensitivity of is stable.
  • the connecting member has a width in a direction perpendicular to a direction connecting the bottoms of the two U-shaped portions, and the width is It is desirable that the width is smaller than the inner width of each U-shaped part to which the connecting member is connected. Furthermore, the vehicle seat having such a configuration further includes a cable that connects the occupant detection sensor and the control device, and the cable extends from the occupant side of the spring member to the opposite side of the occupant of the spring member. It is desirable to extend through a gap between the connecting member and the spring member.
  • the width of the connecting member to which the occupant detection sensor is attached is smaller than the inner width of the U-shaped portion of the first spring member and the second spring member, thereby reducing the weight of the connecting member.
  • the connecting member connects four spring members.
  • the occupant load can be reliably detected by the occupant detection sensor, and the sensitivity when detecting the occupant is stabilized.
  • the plurality of spring members are springs bent in a zigzag manner
  • the plurality of spring members are respectively disposed on both sides of the first spring member and the second spring member.
  • the fourth spring member the third spring member is disposed adjacent to the first spring member, and the plurality of U-shaped portions are disposed in the same direction as the second spring member.
  • the fourth spring member is disposed adjacent to the second spring member, the plurality of U-shaped portions are disposed in the same direction as the first spring member, and the connecting member is The bottom part of the U-shaped part in the first spring member is connected to the bottom part of the U-shaped part in the third spring member, and the bottom part of the U-shaped part in the second spring member and the fourth part Connecting the bottom of the U-shaped part of the spring member It is desirable
  • the connecting member connects the four spring members, the occupant load can be reliably detected by the occupant detection sensor, and the sensitivity when detecting the occupant is stabilized.
  • FIG. 1 is an overall perspective view of a vehicle seat. It is a perspective view of a seat frame. It is a top view of the seat spring which installed the occupant detection sensor.
  • FIG. 4 is a cross-sectional view of the vehicle seat corresponding to the ZZ cross section of FIG. 3.
  • FIG. 6 is a view corresponding to FIG. 5 showing a state when the occupant sits on the vehicle seat.
  • FIG. 4 is a cross-sectional view corresponding to a ZZ cross section of FIG. 3 of a vehicle seat according to a modified example.
  • FIG. 8 is a view corresponding to FIG.
  • a vehicle seat S as an example of a vehicle seat includes a seat cushion S1, a seat back S2 supported by the seat cushion S1, and a headrest S3 supported by the seat back S2. It is configured.
  • front and rear, left and right, and top and bottom are used with reference to an occupant sitting on the vehicle seat S.
  • the seat frame F includes a cushion frame F1 constituting the seat cushion S1 and a seat back frame F2 constituting the seat back S2. Then, as exemplified by the seat cushion S1 in FIG. 5, the seat frame F is covered with a cushion member 51 made of urethane foam, and the skin 52 is further covered with the cushion member 51, whereby the vehicle seat S is configured. Has been.
  • the cushion frame F ⁇ b> 1 that is a part of the seat frame F is connected to a pair of side frames 11 that extend long in the front and rear direction and spaced apart from each other and the front ends of the pair of side frames 11.
  • a pan frame 12 made of sheet metal and a connecting pipe 13 made of a metal pipe that connects the rear ends of the pair of side frames 11 are formed in a frame shape in plan view.
  • a seat spring 20 is installed between the pan frame 12 and the connecting pipe 13 of the cushion frame F1.
  • the seat spring 20 is elongated in the front-rear direction and has four spring members 21 (21A to 21D) arranged side by side, and resin connection members 30A to 30D that connect the spring members 21 to each other. It is comprised by.
  • Each spring member 21 is formed by bending a metal wire, and a hook portion 22 for hooking the connecting pipe 13 is formed at the rear end (see FIG. 2).
  • the spring member 21 extends forward from the hook portion 22 and zigzags right and left. It is bent. Due to this bending, a plurality of U-shaped portions 23 opened to the left and right are continuously formed.
  • each spring member 21 is bent four times to the left and right.
  • the adjacent spring members 21 are bent so as to be bilaterally symmetric in plan view. Therefore, the openings 23A of the U-shaped portions 23 adjacent to the left and right are opposed to the left and right, and the bottom 23B. They are also facing each other.
  • the front end of each spring member 21 extends to the left and right, and the portion extending to the left and right is hooked on a hook 12A (see FIG. 2) provided at the rear end of the pan frame 12 and supported by the pan frame 12. Yes.
  • the four spring members 21A to 21D are connected to the connecting member 30A at four locations separated from each other in the front-rear direction. It is connected by 30D.
  • Each of the connecting members 30A to 30D is formed integrally with the spring members 21A to 21D by insert molding. Therefore, each of the connecting members 30A to 30D is firmly bonded to the spring member 21, and the posture with respect to the spring member 21 is fixed.
  • the four spring members 21A to 21D have adjacent U-shaped portions 23 arranged side by side in the left-right direction, and the inner width IW of each U-shaped portion 23 has a constant dimension.
  • the connecting member 30A arranged at the back is formed so as to connect the bottom portions 23B of the U-shaped portion 23 at the rearmost of the four spring members 21A to 21D. Then, the connecting member 30B arranged second from the back connects the adjacent bottom parts 23B of the second U-shaped part 23 from the rear of the two spring members 21B, 21C arranged in the center. Is formed. Further, the connecting member 30C arranged third from the back also has a bottom portion adjacent to the fourth U-shaped portion 23 arranged behind the two spring members 21B, 21C arranged at the center, similarly to the connecting member 30B. 23B is formed so as to connect each other.
  • the connecting member 30D arranged at the foremost side is formed so as to connect the bottom parts 23B of the U-shaped part 23 second from the front of the four spring members 21A to 21D.
  • An occupant detection sensor 40 is attached to the foremost connecting member 30D.
  • the opening 23A of the second U-shaped portion 23 from the front in the second spring member 21B (first spring member) from the right opens leftward
  • the opening 23A of the second U-shaped portion 23 from the front in the third spring member 21C (second spring member) from the right opens to the right
  • these openings 23A are arranged to face each other.
  • a portion of the connecting member 30D that connects the bottom portion 23B of the U-shaped portion 23 of the spring member 21B and the bottom portion 23B of the U-shaped portion 23 of the spring member 21C is formed to be long from side to side, and occupant detection A size sufficient to arrange the sensor 40 is secured.
  • the lateral width WT of the connecting member 30D (the width in the direction orthogonal to the direction in which the bottom portions 23B of the two U-shaped portions 23 are connected to each other) is smaller than the inner width IW of the U-shaped portion 23.
  • the occupant detection sensor 40 shown in FIG. 4A is a flexible member formed by stacking a plurality of plastic films (not shown) on which pressure-sensitive electrodes 42A and wirings 43 are printed.
  • the occupant detection sensor 40 includes a base 41 that is a portion attached to the connecting member 30 ⁇ / b> D, and a detection unit 42 that extends from the base 41.
  • the detection unit 42 is provided with the above-described pressure-sensitive electrode 42A, and the lower surface of the occupant detection sensor 40 (the surface facing the connecting member 30D).
  • the elastic member 42B made of foaming resin or the like is attached in correspondence with the position of the electrode 42A.
  • the elastic member 42B is provided to concentrate pressure on the electrode 42A when the detection unit 42 is sandwiched between the coupling member 30D and the cushion member 51.
  • the pressure-sensitive electrode 42A outputs an OFF signal from the wiring 43 when no pressure is applied, and outputs an ON signal from the wiring 43 when a predetermined pressure or more is applied from the outside.
  • a cable 44 for connecting to a control device (not shown) is drawn out from the wiring 43. The cable 44 extends from the upper side (occupant side) to the lower side (opposite side of the occupant) of the spring member 21C through the gap between the coupling member 30D and the spring member 21C.
  • the occupant detection sensor 40 is a sensor whose output signal is switched between ON and OFF by an external pressure, the presence / absence of the occupant can be detected more accurately and at a lower cost than a sensor that outputs the value of a load applied from the outside. It can be detected.
  • connection member 30 ⁇ / b> D is provided with a first portion 31 where the base 41 of the occupant detection sensor 40 is disposed and a second portion 32 where the detection portion 42 faces adjacent to the first portion 31.
  • the first part 31 protrudes closer to the cushion member 51 than the second part 32, and the second part 32 is separated from the planar lower surface 51 ⁇ / b> A of the cushion member 51 when the occupant is not sitting on the seat cushion S ⁇ b> 1. is doing.
  • the first part 31 is also slightly separated from the lower surface 51A of the cushion member 51 in a state where no occupant is sitting, but the first part 31 may be in contact with the lower surface 51A.
  • the base 41 is bonded to the first portion 31 with a double-sided tape or an adhesive.
  • the second portion 32 is separated from the lower surface 51A of the cushion member 51, so that a space is secured between the second portion 32 and the cushion member 51, and the detection unit 42 is disposed in this space. For this reason, since the detection part 42 is not pinched
  • the part where the occupant detection sensor 40 is provided is desirably a position corresponding to the occupant's buttocks, and more desirably a position corresponding to the thigh.
  • the detection unit 42 is slightly shifted from the center in the left-right direction of the cushion frame F1 (seat cushion S1) to the right as can be seen with reference to FIG. It is displaced and provided at a position corresponding to the thigh of the occupant.
  • the detection unit 42 by placing the detection unit 42 at a position slightly shifted left and right from the center in the left-right direction, the load from the occupant's buttocks or thighs is firmly applied to the cushion member 51 on the detection unit 42. Presence / absence can be detected accurately.
  • the cushion member 51 is pushed down by the occupant's thigh 60 and the lower surface 51A of the cushion member 51 is detected by the occupant as shown in FIG.
  • the detection unit 42 of the sensor 40 is pressed downward. Thereby, the detection part 42 is clamped by the connecting member 30D and the cushion member 51, and the occupant detection sensor 40 is in an ON state in which power is supplied, and it can be detected that there is an occupant.
  • the presence or absence of an occupant is detected by sandwiching the detection portion 42 of the flexible occupant detection sensor 40 between the connecting member 30D and the cushion member 51. Is possible. And according to the attachment aspect of the passenger
  • the occupant detection sensor 40 when the occupant detection sensor 40 is disposed between the skin 52 and the cushion member 51, there is a limitation in the placement location, such as the vicinity of the portion where the skin 52 is suspended from the cushion member 51 must be avoided.
  • the occupant detection sensor 40 is provided between the cushion member 51 and the connecting member 30 as in the present embodiment, the degree of freedom in arrangement increases.
  • the connecting member 30D of the vehicle seat S is formed so as to be integrated with the spring member 21, the posture of the connecting member 30D is stabilized, and the occupant detection sensor 40 is sandwiched between the connecting member 30D and the cushion member 51. This stabilizes the sensitivity when detecting an occupant.
  • the occupant detection sensor 40 is attached to a connecting member 30D that connects the bottoms 23B of the two U-shaped portions 23 with the openings 23A of the two U-shaped portions 23 facing each other.
  • the installation surface of the occupant detection sensor 40 can be easily installed.
  • the occupant detection sensor 40 is disposed at a position corresponding to the occupant's thigh 60, the load from the occupant's thigh 60 is firmly applied to the cushion member 51, and the occupant detection sensor 40 is turned on. Therefore, the presence or absence of a passenger can be accurately detected.
  • the first portion 31 of the connecting member 30D where the base 41 of the occupant detection sensor 40 is disposed is disposed above (on the occupant side) the spring members 21A to 21D. Can be reliably detected by the occupant detection sensor 40, and the sensitivity when detecting the occupant is stabilized.
  • the weight of the connecting member 30D can be reduced.
  • the cable 44 that connects the occupant detection sensor 40 and the control device passes from the upper side to the lower side of the spring member 21C through the gap between the connecting member 30D and the spring member 21C. Therefore, when the cable 44 is disposed above the spring member 21C, it is possible to prevent problems such as the cable 44 being disconnected between the cushion member 51 and the spring member 21C.
  • the connecting member 30D connects the four spring members 21A to 21D, the passenger's load can be reliably detected by the passenger detection sensor 40, and the sensitivity when detecting the passenger is stabilized.
  • the bottom portions 23B of the U-shaped portions 23 are connected to each other by the connecting member 30D, so that the load of the occupant can be reliably ensured. It can detect with the passenger
  • the present invention is not limited to the above-described embodiment and can be appropriately modified and implemented.
  • the lower surface 51A of the cushion member 51 is planar and the step is provided on the upper surface of the coupling member 30D.
  • the upper surface of the coupling member 30D is planar and the lower surface 51A of the cushion member 51 is A step may be provided.
  • the upper surface of the connecting member 30 ⁇ / b> D is a planar sensor installation portion 35
  • the lower surface 51 ⁇ / b> A of the cushion member 51 is configured with the third portion 53 facing the base 41 and the detection portion A fourth portion 54 facing 42 may be provided.
  • the third part 53 protrudes closer to the sensor installation part 35 than the fourth part 54, and the fourth part 54 is separated from the sensor installation part 35 in a state where no occupant is sitting, and the detection part 42. It is away from.
  • the detection unit 42 is located between the third portion 53 of the cushion member 51 and the connecting member 30D. It can be turned off without being pinched. And if a passenger
  • the occupant detection sensor 140 may be configured to have two detection units 142.
  • the center base 141 of the occupant detection sensor 140 is disposed in the first portion 31 in the center of the connecting member 30, and the two detection portions 142 are disposed facing the second portions 32 on both sides of the first portion 31. Good.
  • each base 241 of each occupant detection sensor 240 is arranged in the first part 31, and each detection part 242 is arranged facing each of the left and right second parts 32 as in the case of FIG. 9B. Good.
  • the occupant detection sensors 140 and 240 including the plurality of detection units 142 and 242 are employed, even if a malfunction such as a contact failure occurs in some of the detection units 142 and 242, the other detection units 142. , 242 can be used to determine the presence or absence of an occupant.
  • the shape and arrangement of the spring member 21 of the seat spring 20 described above is an example, and the U-shaped portion 23 may be bent in an arc shape instead of being bent at a right angle as shown in FIG. Further, the positional relationship between the U-shaped portions is not limited to the form shown in FIG. Similarly, the arrangement of the plurality of connecting members is not limited to the form shown in FIG. 3 and is not particularly limited as long as the spring members are connected to each other. Further, the spring member may be installed on the left and right instead of being installed on the front and rear.
  • the example in which the occupant detection sensor 40 is provided in the connecting member 30D of the seat spring 20 of the seat cushion S1 has been described.
  • the seat back S2 is provided with a seat spring, and the spring member constituting the seat spring is connected.
  • the occupant detection sensor may be attached to the connecting member.
  • a vehicle seat is illustrated as an example of a vehicle seat, but the vehicle seat may be a seat of another vehicle, for example, an aircraft or a ship.

Abstract

L'invention concerne un siège de véhicule équipé d'un châssis de siège (F) et d'une pluralité d'éléments de ressort (21) fixés au châssis de siège (F). Le siège de véhicule est en outre équipé d'un élément de raccordement de résine (30D) permettant de raccorder la pluralité d'éléments de ressort (21) et d'un détecteur de passager flexible (40) fixé à l'élément de raccordement (30D). Le détecteur de passager (40) est conçu pour détecter la présence d'un passager lorsque le passager est assis sur le siège de véhicule en étant intercalé entre l'élément de raccordement (30D) et un élément de rembourrage.
PCT/JP2014/067116 2013-07-02 2014-06-27 Siège de véhicule WO2015002076A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-138544 2013-07-02
JP2013138544A JP5905413B2 (ja) 2013-07-02 2013-07-02 乗物用シート

Publications (1)

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WO2015002076A1 true WO2015002076A1 (fr) 2015-01-08

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PCT/JP2014/067116 WO2015002076A1 (fr) 2013-07-02 2014-06-27 Siège de véhicule

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JP (1) JP5905413B2 (fr)
WO (1) WO2015002076A1 (fr)

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JP2016144983A (ja) * 2015-02-06 2016-08-12 株式会社フジクラ 着座センサユニット
CN107650740A (zh) * 2016-07-26 2018-02-02 株式会社藤仓 载荷检测传感器单元
JP2018135073A (ja) * 2017-02-23 2018-08-30 テイ・エス テック株式会社 乗物用シート
WO2019111842A1 (fr) * 2017-12-08 2019-06-13 テイ・エス テック株式会社 Structure pour positionner un capteur de pression sur un siège, et siège de véhicule
WO2019194125A1 (fr) * 2018-04-03 2019-10-10 テイ・エス テック株式会社 Structure destinée à l'agencement d'un capteur sur un siège et siège de véhicule
JP2019182005A (ja) * 2018-04-03 2019-10-24 テイ・エス テック株式会社 シートへのセンサーの配置構造及び車両用シート
CN110461223A (zh) * 2017-04-03 2019-11-15 提爱思科技股份有限公司 生物传感器的配置构造

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JP6517525B2 (ja) * 2015-02-06 2019-05-22 本田技研工業株式会社 乗物用シート
JP6517524B2 (ja) * 2015-02-06 2019-05-22 本田技研工業株式会社 乗物用シート
JP6453093B2 (ja) * 2015-02-06 2019-01-16 テイ・エス テック株式会社 乗物用シート
JP6487229B2 (ja) * 2015-02-06 2019-03-20 株式会社フジクラ 着座センサユニット
JP6482391B2 (ja) * 2015-06-08 2019-03-13 本田技研工業株式会社 クッション部材の製造方法
JP6356882B1 (ja) * 2017-07-31 2018-07-11 テイ・エス テック株式会社 シートへのセンサーの配置構造
JP6705994B2 (ja) * 2018-12-10 2020-06-03 テイ・エス テック株式会社 乗物用シート
JP7104329B2 (ja) * 2019-02-21 2022-07-21 テイ・エス テック株式会社 シートへのセンサーの配置構造及び乗物用シート
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CN107650740B (zh) * 2016-07-26 2019-12-13 株式会社藤仓 载荷检测传感器单元
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EP3607877A4 (fr) * 2017-04-03 2021-01-13 TS Tech Co., Ltd. Structure d'agencement pour capteurs biologiques
JP2019099099A (ja) * 2017-12-08 2019-06-24 テイ・エス テック株式会社 シートへの圧力センサーの配置構造
JP7104293B2 (ja) 2017-12-08 2022-07-21 テイ・エス テック株式会社 シートへの圧力センサーの配置構造
JP2022125264A (ja) * 2017-12-08 2022-08-26 テイ・エス テック株式会社 シートへの圧力センサーの配置構造
WO2019111842A1 (fr) * 2017-12-08 2019-06-13 テイ・エス テック株式会社 Structure pour positionner un capteur de pression sur un siège, et siège de véhicule
JP2019182005A (ja) * 2018-04-03 2019-10-24 テイ・エス テック株式会社 シートへのセンサーの配置構造及び車両用シート
WO2019194125A1 (fr) * 2018-04-03 2019-10-10 テイ・エス テック株式会社 Structure destinée à l'agencement d'un capteur sur un siège et siège de véhicule
JP7121259B2 (ja) 2018-04-03 2022-08-18 テイ・エス テック株式会社 シートへのセンサーの配置構造及び車両用シート

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