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WO2001045979A1 - Dispositif agissant sur la position d'un appuie-tete dans un vehicule - Google Patents

Dispositif agissant sur la position d'un appuie-tete dans un vehicule Download PDF

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Publication number
WO2001045979A1
WO2001045979A1 PCT/US2000/033611 US0033611W WO0145979A1 WO 2001045979 A1 WO2001045979 A1 WO 2001045979A1 US 0033611 W US0033611 W US 0033611W WO 0145979 A1 WO0145979 A1 WO 0145979A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
headrest
apparatus defined
sensor
collision
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US2000/033611
Other languages
English (en)
Inventor
Humer Mladen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lear Corp
Original Assignee
Lear Corp
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 Lear Corp filed Critical Lear Corp
Publication of WO2001045979A1 publication Critical patent/WO2001045979A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B60N2/80—Head-rests
    • B60N2/806—Head-rests movable or adjustable
    • 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
    • B60N2/0224—Non-manual adjustments, e.g. with electrical operation
    • B60N2/0244—Non-manual adjustments, e.g. with electrical operation with logic circuits
    • B60N2/0268—Non-manual adjustments, e.g. with electrical operation with logic circuits using sensors or detectors for adapting the seat or seat part, e.g. to the position of an occupant
    • 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
    • B60N2/0224—Non-manual adjustments, e.g. with electrical operation
    • B60N2/0244—Non-manual adjustments, e.g. with electrical operation with logic circuits
    • B60N2/0278—Non-manual adjustments, e.g. with electrical operation with logic circuits using sensors external to the seat for measurements in relation to the seat adjustment, e.g. for identifying the presence of obstacles or the appropriateness of the occupants position
    • B60N2/0279—Non-manual adjustments, e.g. with electrical operation with logic circuits using sensors external to the seat for measurements in relation to the seat adjustment, e.g. for identifying the presence of obstacles or the appropriateness of the occupants position for detecting objects outside the vehicle, e.g. for user identification
    • 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
    • B60N2/80—Head-rests
    • B60N2/806—Head-rests movable or adjustable
    • B60N2/865—Head-rests movable or adjustable providing a fore-and-aft movement with respect to the occupant's head
    • 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
    • B60N2/80—Head-rests
    • B60N2/888—Head-rests with arrangements for protecting against abnormal g-forces, e.g. by displacement of the head-rest
    • 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
    • B60N2210/10—Field detection presence sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2220/00—Computerised treatment of data for controlling of seats
    • B60N2220/20—Computerised treatment of data for controlling of seats using a deterministic algorithm
    • 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
    • B60R21/013—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 collisions, impending collisions or roll-over
    • B60R21/0134—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 collisions, impending collisions or roll-over responsive to imminent contact with an obstacle, e.g. using radar systems

Definitions

  • This invention relates in general to apparatus for vehicles, and in particular to an apparatus for moving a vehicle headrest prior to a crash of the vehicle.
  • the front seats of a vehicle are usually provided with headrests for the vehicle occupants.
  • the head of the occupant is usually positioned a distance in front of the headrest during normal operation of the vehicle.
  • the head of the occupant often moves back and hits the headrest.
  • a rear collision of the vehicle causes the head of the occupant to move back rapidly relative to the occupant' s chest until the head hits the headrest.
  • a front collision of the vehicle causes the head of the occupant to move forward and then bounce back.
  • Other crashes such as spins or flips of the vehicle may also cause the head of the occupant to move back and hit the headrest.
  • the distance between the headrest and the occupant' s head is relatively large, the rearward movement of the occupant' s head may cause injury to the head and/or neck of the occupant, such as a whiplash injury.
  • One way to address this problem is to move the headrest forward and upward in the event of a crash so that it is adjacent to the head of the occupant. It is known to equip the headrest with an actuator that is triggered after a crash has occurred to move the headrest forward and upward relative to the initial position, similar to the way that an airbag is actuated by a crash.
  • This approach has some drawbacks, however.
  • an actuator such as a stored energy system, e.g., a pyrotechnic device, must move the headrest in a veiy rapid amount of time. If the headrest is not moved soon enough, the rapidly moving headrest may collide with the head of the occupant during its rearward movement, possibly causing an even more severe injury to the occupant. The occupant may also be injured if the headrest is actuated accidentally.
  • This invention relates to an apparatus for a vehicle including a sensor for sensing an impending crash of the vehicle, and an actuator responsive to the sensor for actuating movement of a headrest of the vehicle from a first position to a second position. The movement of the headrest is initiated by the actuator prior to the impending crash.
  • the invention relates to an apparatus for a vehicle including a sensor for connecting to a first vehicle, and for sensing position and movement of a second vehicle relative to the first vehicle.
  • the apparatus also includes a controller responsive to the sensor for predicting an impending collision of the first and second vehicles.
  • the apparatus also includes an actuator responsive to the controller for actuating movement of a headrest of the first vehicle from a first position to a second position, the movement being initiated prior to the impending collision.
  • Fig. 1 is a schematic plan view of a vehicle equipped with an apparatus for moving a headrest in accordance with the invention.
  • Fig. 2 is a schematic side view of a vehicle seat having a headrest, the headrest being moved from a rearward and downward position to a forward and upward position by the apparatus of the invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The present invention relates to an apparatus for moving a vehicle headrest prior to a crash of the vehicle.
  • the apparatus can work with any type of vehicle and any type of impending crash.
  • the crash can be a collision, such as a front collision, a rear collision, or a side collision.
  • the collision can be a collision with another vehicle, with a stationary roadside obstacle, or any other type of collision.
  • the crash can also be a crash not involving a collision, such as a spin, a flip, or a turnover.
  • a first vehicle 12 is equipped with a front sensor 14 and a rear sensor 16.
  • the front sensor 14 is adapted to sense an impending front crash of the vehicle 12
  • the rear sensor 16 is adapted to sense an impending rear crash of the vehicle 12.
  • the vehicle 12 could be equipped with only one of the front and rear sensors 14 and 16, or it could be equipped with additional sensors such as side sensors (not shown).
  • the sensors 14 and 16 are adapted to sense a crash of the vehicle 12 prior to the crash taking place. To accomplish this, the sensors 14 and 16 are adapted to sense conditions that are predictive of an impending crash. In a preferred embodiment, the sensors 14 and 16 are proximity sensors which are adapted to sense position and/or movement of a second vehicle 18 relative to the first vehicle 12. The sensed movement is usually velocity and acceleration of the second vehicle 18 relative to the first vehicle 12. Preferably, the sensors 14 and 16 are adapted to sense position and movement of a plurality of vehicles in the near vicinity of the first vehicle 12. The sensors 14 and 16 can accomplish these functions in any suitable manner. Usually, the sensors 14 and 16 send out waves and receive feedback from the waves to sense the impending crash.
  • Suitable waves include microwaves, infrared waves, ultrasound waves, radio waves, electromagnetic waves, laser beams, and others.
  • the illustrated sensors 14 and 16 are adapted to generate signals 20 and 22 that are representative of the sensed conditions predictive of the impending crash.
  • the apparatus 10 also includes a controller 24 responsive to the sensors 14 and 16 which is adapted to predict an impending crash of the vehicle 12.
  • the controller 24 can be a computer or any other suitable electronic controlling device known in the art.
  • the controller 24 is adapted to receive the signals 20 and 22 generated by the sensors 14 and 16.
  • the contiOller 24 can perform the predictive function in any suitable manner.
  • the contiOller 24 uses an algorithm which is adapted to predict the impending crash based on the sensed conditions, such as the sensed position and movement of the second vehicle.
  • the contiOller 24 generates first and second signals 26 and 28 representative of the predicted crash.
  • the illusttated apparatus 10 also includes first and second actuators 30 and 32 mounted in first and second seats 34 and 36 of the vehicle 12.
  • the first and second seats 34 and 36 have first and second headrests 38 and 40, respectively.
  • the actuators 30 and 32 are responsive to the sensors 14 and 16, or responsive to the contiOller 24 when the apparatus includes a contiOller 24.
  • the actuators 30 and 32 are adapted to receive the signals 26 and 28 generated by the contiOller 24. As shown in Fig.
  • the actuator 30 is adapted to actuate movement of the headrest 38 mounted on the seat 34 from a first position 38a (shown by phantom lines) to a second position 38b (shown by solid lines).
  • the first position 38a is a rearward and downward position (the position during normal operation of the vehicle)
  • the second position is a forward and upward position closer to the head (not shown) of the vehicle occupant.
  • the movement of the headrest 38 from the first position 38a to the second position 38b is at least initiated by the actuator 30 prior to the crash, because of the predictive aspects of the apparatus 10, In some instances, the movement of the headrest 38 is completed prior to the crash.
  • Suitable actuators for moving objects such as vehicle headrests are well known in the art.
  • the actuator 30 can be connected to the headrest 38 by any suitable linkage (not shown), as is well known in the art. Because the apparatus 10 senses/predicts the crash prior to the crash taking place, the actuator 30 has sufficient time to move the headrest 38 to the second position without the use of a fast responsive system, such as a stored energy system such as a pyrotechnic device. Compared with an actuator which is triggered by a crash taking place, the actuator 30 of the apparatus 10 has much more available time for deployment. For example, a stored energy system that triggers during impact should actuate a headrest in about 0.025 seconds. In conti'ast, the predictive apparatus 10 of the present invention may increase the time available for actuation to about 0.2 to 0.5 seconds in some embodiments of the invention.
  • the actuator 30 of the invention can be an electric motor instead of pyrotechnics or other fast acting energy systems. Because of the slower deployment, risk of injuiy due to inadvertent actuation is greatly reduced.
  • the use of an electric motor as the actuator 30 can allow both forward and vertical movement of the headrest 38. The vertical movement can be optimized for the occupant. Two electric motors (not shown) can also be used with a powered 4-way headrest.
  • the actuator 30 re-sets automatically after actuation after a predetermined amount of time, that is, the actuator 30 moves the headrest 38 from the second position 38b to the first position 38a at a predetermined time inteival after the initial actuation.
  • the actuator 30 can also be a compressed spring.
  • the actuator 30 includes a spring and a damper with a controlled deployment velocity.

Landscapes

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

Abstract

Cette invention concerne un dispositif (10) pour véhicule comprenant un détecteur (14, 16) qui est relié à un premier véhicule (12) qui est conçu pour détecter la position et le déplacement d'un second véhicule (18) par rapport au premier (12). Ce dispositif comprend également une unité de commande (24) qui réagit aux indications du détecteur (14, 16) lorsque ledit détecteur anticipe une collision entre le premier et le second véhicule. Le dispositif comprend également un actionneur (30, 32) qui obéit aux instructions de l'unité de commande (24) et fait passer l'appui-tête (38, 40) du premier véhicule (12) d'une première à une seconde position, ceci avant que la collision n'ait lieu.
PCT/US2000/033611 1999-12-22 2000-12-11 Dispositif agissant sur la position d'un appuie-tete dans un vehicule Ceased WO2001045979A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US47052799A 1999-12-22 1999-12-22
US09/470,527 1999-12-22

Publications (1)

Publication Number Publication Date
WO2001045979A1 true WO2001045979A1 (fr) 2001-06-28

Family

ID=23867965

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/033611 Ceased WO2001045979A1 (fr) 1999-12-22 2000-12-11 Dispositif agissant sur la position d'un appuie-tete dans un vehicule

Country Status (1)

Country Link
WO (1) WO2001045979A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003033294A1 (fr) * 2001-10-13 2003-04-24 Daimlerchrysler Ag Siege de vehicule et son procede d'activation
DE10318417A1 (de) * 2003-04-23 2005-01-05 Faurecia Autositze Gmbh & Co. Kg Verstellandordnung zur Pre-Crash-Verstellung einer Fahrzeugkomponente, insbesondere eines Fahrzeugsitzes
US7479749B2 (en) 2005-10-08 2009-01-20 Faurecia Autositze Gmbh Vehicle seat arrangement with an electric adjustment mechanism
CN108544988A (zh) * 2016-05-10 2018-09-18 西华大学 一种轻量化电动汽车轴荷动态调整方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3900495A1 (de) * 1989-01-10 1990-07-26 Bayerische Motoren Werke Ag Kopfstuetze fuer einen kraftfahrzeugsitz
FR2735083A3 (fr) * 1996-02-13 1996-12-13 Zagyansky Yuly Dispositif principalement nouveau, contre les accidents de la route
GB2301906A (en) * 1995-06-07 1996-12-18 Automotive Tech Int Vehicle headrest and positioning system therefor
US5927804A (en) * 1998-02-11 1999-07-27 Trw Inc. Vehicle occupant protection apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3900495A1 (de) * 1989-01-10 1990-07-26 Bayerische Motoren Werke Ag Kopfstuetze fuer einen kraftfahrzeugsitz
GB2301906A (en) * 1995-06-07 1996-12-18 Automotive Tech Int Vehicle headrest and positioning system therefor
FR2735083A3 (fr) * 1996-02-13 1996-12-13 Zagyansky Yuly Dispositif principalement nouveau, contre les accidents de la route
US5927804A (en) * 1998-02-11 1999-07-27 Trw Inc. Vehicle occupant protection apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003033294A1 (fr) * 2001-10-13 2003-04-24 Daimlerchrysler Ag Siege de vehicule et son procede d'activation
US7374223B2 (en) 2001-10-13 2008-05-20 Daimlerchrysler Ag Vehicle seat and method for controlling the same
DE10318417A1 (de) * 2003-04-23 2005-01-05 Faurecia Autositze Gmbh & Co. Kg Verstellandordnung zur Pre-Crash-Verstellung einer Fahrzeugkomponente, insbesondere eines Fahrzeugsitzes
DE10318417B4 (de) * 2003-04-23 2006-04-13 Faurecia Autositze Gmbh & Co. Kg Verstellandordnung zur Pre-Crash-Verstellung einer Fahrzeugkomponente, insbesondere eines Fahrzeugsitzes
US7387184B2 (en) 2003-04-23 2008-06-17 Faurecia Autositze Gmbh & Co. Kg Setting system for pre-crash setting of a motor vehicle seat
US7479749B2 (en) 2005-10-08 2009-01-20 Faurecia Autositze Gmbh Vehicle seat arrangement with an electric adjustment mechanism
CN108544988A (zh) * 2016-05-10 2018-09-18 西华大学 一种轻量化电动汽车轴荷动态调整方法

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