WO2004096600A1 - Siege ajustable pourvu de capteurs du poids de l'occupant integres - Google Patents

Siege ajustable pourvu de capteurs du poids de l'occupant integres Download PDF

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Publication number
WO2004096600A1
WO2004096600A1 PCT/CA2004/000696 CA2004000696W WO2004096600A1 WO 2004096600 A1 WO2004096600 A1 WO 2004096600A1 CA 2004000696 W CA2004000696 W CA 2004000696W WO 2004096600 A1 WO2004096600 A1 WO 2004096600A1
Authority
WO
WIPO (PCT)
Prior art keywords
seat
subframe
assembly
weight sensors
weight
Prior art date
Application number
PCT/CA2004/000696
Other languages
English (en)
Inventor
Otman A. Basir
Kristopher Desrochers
Alexander M. Nassonov
Sergey Krivtsov
Dmitri L. Axakov
Mikalai Makaranka
Original Assignee
Intelligent Mechatronic Systems Inc.
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 Intelligent Mechatronic Systems Inc. filed Critical Intelligent Mechatronic Systems Inc.
Publication of WO2004096600A1 publication Critical patent/WO2004096600A1/fr

Links

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
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/1605—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the cinematic
    • B60N2/161—Rods
    • B60N2/1615—Parallelogram-like structure
    • 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
    • B60N2/0021—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement
    • B60N2/0024—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement for identifying, categorising or investigation of the occupant or object on the seat
    • B60N2/0025—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement for identifying, categorising or investigation of the occupant or object on the seat by using weight measurement
    • 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
    • B60N2/0021—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement
    • B60N2/003—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement characterised by the sensor mounting location in or on the seat
    • B60N2/0031—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement characterised by the sensor mounting location in or on the seat mounted on the frame
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512—Passenger detection systems
    • B60R21/01516—Passenger detection systems using force or pressure sensing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2210/00—Sensor types, e.g. for passenger detection systems or for controlling seats
    • B60N2210/40—Force or pressure sensors

Definitions

  • This invention relates to vehicle occupant weight sensing and classification and more particularly to occupant weight sensing and classification in an adjustable seat.
  • An automotive car seat typically includes a seat base and a seat back and is mounted to an automobile chassis by a support arrangement.
  • the support arrangement is usually movable by means of electric motors and connected to the seat by four pivoted links.
  • WO 02/074575 One example is shown in WO 02/074575.
  • an active safety restraint system may determine whether or not to deploy or may determine the amount of force with which to deploy.
  • One way of achieving this is by using a plurality of load cells mounted beneath the vehicle seat.
  • weight sensors below the vehicle seat has also been complicated by the over-cinching of the seat belt. If the seat belt is cinched tightly on a child seat, this increases the weight reading on the weight sensors. The increase in weight on the sensors by the cinched seat belt could incorrectly lead to the determination that an adult is in the vehicle seat.
  • some systems incorporate a belt load sensor, which measures the tension in the seat belt so that it can be subtracted from the weight sensors reading to determine the occupant weight.
  • the belt load sensor increases the overall cost of the system.
  • the present invention provides an improved adjustable seat with weight sensors.
  • the invention could be applied to both a manual adjustable seat and a power adjustable seat. Therefore, unless otherwise specified, the tenn "adjustable" is intended to include manual and power adjustable seats.
  • the present invention provides an improved vehicle seat subframe assembly that can be installed in existing adjustable vehicle seat designs without substantial modification.
  • the subframe assembly includes a subframe to which are attached a plurality of seat height adjuster links and a plurality of weight sensors.
  • the subframe assembly is adapted to be mounted between the vehicle seat and a seat slide assembly.
  • the seat height adjuster links are connected to the seat slide assembly and the weight sensors contact the vehicle seat.
  • the seat height adjuster links are connected to the vehicle seat and the weight sensors contact the seat slide assembly.
  • Overload bolts provide gaps that protect the weight sensors from being overloaded in the event of a collision.
  • the seat occupant weight sensors are safe when abnormal force acts on the seat.
  • the gap between the rigid frame and the seat base protects sensors from being overloaded.
  • the seat occupant weight sensors experience restricted seat displacement relative to the support arrangement. This is especially true for power adjustable seats.
  • Use of the vehicle seat subframe of the present invention in an existing adjustable seat design causes little or no increase in overall seat height.
  • Figure 1 is a schematic representation of a vehicle seat assembly according to a first embodiment of the present invention.
  • Figure 2 is a perspective view of the seat subframe assembly and seat slide assembly from Figure 1.
  • Figure 3 is an enlarged bottom perspective view of one front corner the assembly of Figure 2.
  • Figure 4 is an enlarged bottom perspective view of one rear corner of the assembly of Figure 2.
  • Figure 5 is an enlarged top perspective view of the rear corner of the assembly of Figure 4.
  • Figure 6 is a sectional view along lines 6-6 of Figure 5.
  • Figure 7 is a schematic view of a vehicle seat assembly according to a second embodiment of the present invention.
  • a vehicle seat assembly 10 according to a first embodiment is shown schematically in Figure 1.
  • a seat subframe assembly 12 is mounted below a vehicle seat base 14 and seat back 16 and above lower tracks 20 (one shown).
  • the schematic of Figure 1 shows the components stacked on upon another for clarity, although it should be recognized that in reality there is substantial overlap, such that the overall height of the vehicle seat assembly 10 is not increased.
  • the seat subframe assembly 12 includes a subframe 22 connected to lower ends of a plurality of seat height adjustment links 24.
  • the seat subframe assembly 12 further includes a plurality of weight sensors 26 mounted to the subframe 22. The weight sensors 26 measure weight between the subframe 22 and an upper seat slide assembly 28.
  • FIG. 2 A perspective view of the seat subframe assembly 12 (without the seat height adjustment links 24) and upper seat slide assembly 28 is shown in Figure 2.
  • the plurality of weight sensors 26 are mounted in mounting sleeves 30 formed at the corners of the subframe 22.
  • a plurality of mounting tabs 34 are formed in the subframe 22 for attaching to the lower ends of the seat height adjustment links 24 ( Figure 1).
  • the upper seat slide assembly 28 includes a pair of seat track slides 40 connected at the front by a front cross member 42 and at the rear by a rear cross member 46.
  • the rear cross member 46 is attached to the rear of the seat slides 40 by rear thrust brackets 48.
  • Shoulder bolts 54 attach the rear thrust brackets 48 and seat belt attachment brackets 50 to the seat slides 40.
  • FIG 3 is an enlarged bottom perspective view of one front corner of seat subframe assembly of Figure 2.
  • each of the front weight sensors 26 is attached to a mounting hole 60 in the front cross member 42.
  • the front weight sensors 26 measure weight between the subframe 22 and the front cross member 42.
  • FIG 4 is an enlarged bottom perspective view of one rear corner of the seat subframe assembly of Figure 2. As can be seen in Figure 4, each rear weight sensor 26 is attached to a mounting hole 64 in one of the rear thrust bracket 48. The rear weight sensors 26 measure weight between the subframe 22 and the rear thrust brackets 48.
  • FIG. 5 is an enlarged top perspective view of the rear corner of the seat subframe assembly of Figure 4.
  • Figure 6 is a sectional view along lines 6-6 of Figure 5.
  • the subframe 22 includes two weight sensor brackets 66 (one shown) at its rear end protruding beyond the seat.
  • the mounting sleeves 30 are each on a weight sensor bracket 66.
  • This provides seat belt attachment points mechanically linked to the suspended part of the subframe 22.
  • Such a kinematical arrangement of the seat belt attachment points allows elimination of seat belt tension sensors.
  • the two shoulder bolts 54 are firmly attached to the rear end of each seat track slide 40.
  • the shoulder bolts 54 go through holes 68, 69 in the seat belt attachment bracket 50 and the weight sensor bracket 66.
  • the holes 68, 69 in the seat belt attachment bracket 50 and weight sensor bracket 66 are slightly larger than the diameter of the shoulder bolts 54 to provide a guaranteed clearance relative to the shoulder of the shoulder bolt 54.
  • FIG. 7 is a schematic view of a vehicle seat assembly 110 according to a second embodiment of the present invention.
  • the vehicle seat assembly 110 includes a seat subframe assembly 112 again including a subframe 122 to which are mounted a plurality of weight sensors 126 and the upper ends of a plurality of seat height adjustment links 124.
  • the weight sensors 126 engage the seat base 114, while the seat height adjustment links 124 connect to the upper seat slide assembly 128.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Seats For Vehicles (AREA)
  • Air Bags (AREA)

Abstract

Ensemble sous-cadre (12) pour un siège de véhicule, qui comporte un sous-cadre (22) auquel sont attachées une pluralité d'éléments de liaison (24) d'ajustement de hauteur de siège et une pluralité de capteurs de poids (26). Ledit ensemble sous-cadre est adapté pour être monté entre le siège (14, 16) de véhicule et un ensemble de coulissement (28) de siège. Dans un mode de réalisation, les éléments de liaison d'ajustement de hauteur de siège sont couplés à l'ensemble de coulissement de siège et les capteurs de poids se trouvent en contact avec le siège du véhicule. Dans un autre mode de réalisation, les éléments de liaison d'ajustement de hauteur de siège sont couplés au siège de véhicule et les capteurs de poids se trouvent en contact avec l'ensemble de coulissement de siège. Des boulons de surcharge fournissent des espaces qui protègent les capteurs de poids contre la surcharge en cas de collision.
PCT/CA2004/000696 2003-04-30 2004-04-30 Siege ajustable pourvu de capteurs du poids de l'occupant integres WO2004096600A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US46693303P 2003-04-30 2003-04-30
US60/466,933 2003-04-30
US51758103P 2003-11-05 2003-11-05
US60/517,581 2003-11-05

Publications (1)

Publication Number Publication Date
WO2004096600A1 true WO2004096600A1 (fr) 2004-11-11

Family

ID=33423630

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2004/000696 WO2004096600A1 (fr) 2003-04-30 2004-04-30 Siege ajustable pourvu de capteurs du poids de l'occupant integres

Country Status (2)

Country Link
US (1) US20040232751A1 (fr)
WO (1) WO2004096600A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6994397B2 (en) * 2003-06-26 2006-02-07 Lear Corporation Vehicle occupant sensing system having sensor assemblies with variable blasing member
US7132953B2 (en) * 2003-06-26 2006-11-07 Lear Corporation Spring sensor assembly for a vehicle seat cushion
US7258398B2 (en) * 2003-06-26 2007-08-21 Lear Corporation Vehicle occupant sensing system having an upper slide member with an emitter interference member
US7100980B2 (en) * 2004-10-27 2006-09-05 Lear Corporation Vehicle seat assembly having a vehicle occupant sensing system with a biasing pad

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5670853A (en) * 1994-12-06 1997-09-23 Trw Vehicle Safety Systems Inc. Method and apparatus for controlling vehicle occupant position
US5865463A (en) * 1997-02-15 1999-02-02 Breed Automotive Technology, Inc. Airbag deployment controller
EP0950560A2 (fr) * 1998-04-16 1999-10-20 Takata Corporation Appareil de mesure du poids d'un siège
DE10120977A1 (de) * 2001-05-01 2002-11-14 Bizerba Gmbh & Co Kg Fahrzeugsitz
US6546817B1 (en) * 1999-02-08 2003-04-15 Takata Corporation Diagnostic method for a seat load measuring apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5449218A (en) * 1988-01-07 1995-09-12 Life Force, Inc. Vehicle safety device
US5636884A (en) * 1995-03-15 1997-06-10 Lear Seating Corporation Pivotal seat and support
KR20010031876A (ko) * 1997-11-12 2001-04-16 웰스 러셀 씨 차량 좌석 착석 승객의 중량과 위치를 결정하는 방법 및시스템
DE60045051D1 (de) * 1999-01-14 2010-11-11 Toyota Motor Co Ltd Vorrichtung und Verfahren zur Erkennung eines sitzenden Passagiers
US6095555A (en) * 1999-05-12 2000-08-01 Trw Inc. Apparatus for sensing a forward position of a vehicle seat
US6595570B2 (en) * 2000-11-22 2003-07-22 Lear Corporation Vehicle seat assembly having load cell based seat occupant sensing system
US6940026B2 (en) * 2002-12-09 2005-09-06 Robert Bosch Corporation Method and system for vehicle occupant weight sensing
US6859753B1 (en) * 2003-08-26 2005-02-22 Robert Bosch Corporation Apparatus and method for measuring the weight of an occupant in a vehicle
DE102004042840A1 (de) * 2003-11-11 2005-06-09 C. Rob. Hammerstein Gmbh & Co. Kg Kraftfahrzeugsitz mit Erfassung des Passagiergewichts

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5670853A (en) * 1994-12-06 1997-09-23 Trw Vehicle Safety Systems Inc. Method and apparatus for controlling vehicle occupant position
US5865463A (en) * 1997-02-15 1999-02-02 Breed Automotive Technology, Inc. Airbag deployment controller
EP0950560A2 (fr) * 1998-04-16 1999-10-20 Takata Corporation Appareil de mesure du poids d'un siège
US6546817B1 (en) * 1999-02-08 2003-04-15 Takata Corporation Diagnostic method for a seat load measuring apparatus
DE10120977A1 (de) * 2001-05-01 2002-11-14 Bizerba Gmbh & Co Kg Fahrzeugsitz

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