WO2009115185A1 - Système de ceinture de sécurité avec un tendeur de ceinture réversible et procédé de commande pour un tendeur de ceinture réversible - Google Patents

Système de ceinture de sécurité avec un tendeur de ceinture réversible et procédé de commande pour un tendeur de ceinture réversible Download PDF

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Publication number
WO2009115185A1
WO2009115185A1 PCT/EP2009/001508 EP2009001508W WO2009115185A1 WO 2009115185 A1 WO2009115185 A1 WO 2009115185A1 EP 2009001508 W EP2009001508 W EP 2009001508W WO 2009115185 A1 WO2009115185 A1 WO 2009115185A1
Authority
WO
WIPO (PCT)
Prior art keywords
belt tensioner
vehicle
vehicle deceleration
reversible
safety
Prior art date
Application number
PCT/EP2009/001508
Other languages
German (de)
English (en)
Inventor
Hans-Otto Kock
Andreas Lucht
Original Assignee
Autoliv Development Ab
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 Autoliv Development Ab filed Critical Autoliv Development Ab
Publication of WO2009115185A1 publication Critical patent/WO2009115185A1/fr

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Classifications

    • 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
    • B60R21/0132—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 vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
    • 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
    • B60R2021/01204—Actuation parameters of safety arrangents
    • B60R2021/01252—Devices other than bags
    • B60R2021/01265—Seat belts
    • B60R2021/01272—Belt tensioners

Definitions

  • the invention relates to a safety belt system having the features of the preamble of claim 1 and a control method having the features of the preamble of claim 10.
  • Control methods for reversible belt tensioners are well known in the art.
  • the task of the reversible belt tensioner is, in a situation in which an accident could possibly follow, also referred to as a pre-crash phase to extract existing belt slack from the seat belt system to the occupants as early as possible in the event of a subsequent accident Coupling vehicle deceleration. Due to the early coupling of the occupant to the vehicle deceleration becomes the occupant load
  • reversible belt tensioners also serve as a warning system in order to alert the occupants of a dangerous situation, and in general to the mediation of an active safety device.
  • Reversible belt tensioners can, for example, have an electric motor drive, which is particularly easy to control. Furthermore, reversible belt tensioners with a mechanically tensioned spring or else known with a compressed air storage.
  • a safety belt system in which a Vorstrammer is provided, which is controlled in dependence on the speed and the distance of the vehicle with respect to an object.
  • a restraint system in which a sensor device is provided, by means of which vehicle dynamic conditions are detected, which are evaluated in an evaluation unit for determining a potential accident situation.
  • the electrically driven reversibly operating tightening drive is then activated above a vehicle speed when a potential accident situation is detected.
  • a disadvantage of these systems is that they use only a limited number of parameters for controlling the reversible belt tensioner, so that certain critical situations are not taken into account or use signals that are generated only when the driving safety critical situation is traveled.
  • the object of the invention is to provide a reversible belt tensioner and a control method for the belt tensioner, in which the occupant is to be coupled as early as possible to the vehicle deceleration and in which all critical parameters are used to determine a possible accident to control the belt tensioner, where the effort of the control should nevertheless be kept as low as possible.
  • the object of the invention is achieved by a reversible belt tensioner with the features of claim 1 and by a Control method with the features of claim 10 solved.
  • the motor vehicle has a driving speed control device for regulating the driving speed as a function of driving safety-relevant parameters and the reversible belt tensioner can be controlled by the driving speed control device.
  • the advantage of the invention lies in the fact that the vehicle speed control device used to control the belt tensioner already takes into account all driving safety relevant parameters, since the vehicle speed control device itself is already subject to very high requirements on the part of the vehicle manufacturer. Furthermore, the vehicle speed control device supplies a signal which directly indicates the future vehicle deceleration and is thus directly coupled to the expected occupant deceleration. Furthermore, the occupant is not surprised by the sudden reduction in driving speed and associated advance displacement, since at the same time as the vehicle deceleration due to the vehicle deceleration, the belt force is increased by the reversible belt tensioner and a forward displacement of the occupant is prevented.
  • a further preferred embodiment of the invention consists in that a vehicle deceleration to be made can be determined from the driving safety-relevant parameters in the vehicle speed control device, and the reversible belt tensioner can be activated when a predefined vehicle deceleration is exceeded. This prevents the reversible belt tensioner from being activated with every slight reduction in the driving speed and prevents the occupant from being constantly “twitched” by the safety belt system. but only in those cases where the occupant would experience a significant forward shift due to vehicle deceleration.
  • the reversible belt tensioner at a predetermined vehicle deceleration of at least 0.45g can be controlled.
  • a plurality of vehicle decelerations are predetermined, beyond which the belt tensioner can be controlled differently.
  • the belt tensioner can thereby be controlled in stages, so that the belt force exerted by the belt tensioner on the occupant belt force is increased continuously or discontinuously, and thus the occupant a further improved sense of security is conveyed.
  • the tensioning force of the reversible belt tensioner can vary both for different vehicle decelerations and for different vehicle accelerations.
  • a further preferred embodiment of the invention consists in that the reversible belt tensioner can be controlled to exceed a first vehicle deceleration of 0.3 g for exerting a first pretension and can be controlled to exert a second pretension when a second vehicle deceleration of 0.45 g is exceeded. wherein the second bias voltage is greater than the first bias voltage.
  • the limits of the predetermined vehicle decelerations of 0.3 g and 0.45 g have proven to be advantageous in that these values for the occupant are already significant occupant delays and have proven to be a good compromise between an unnecessary permanent tightening of the seat belt and a good retention characteristic .
  • the safety belt system comprises a second irreversible belt tensioner controlled by the vehicle speed control device.
  • Irreversible belt tensioners for example, are driven by pyrotechnics and have a considerably greater tautening force and serve to improve performance when determining an unavoidable accident.
  • the proposed solution is particularly advantageous if both the reversible belt tensioner and the irreversible belt tensioner are arranged on a common belt retractor.
  • both the reversible and the irreversible belt tensioners can be connected via a common signal line with the vehicle speed control device.
  • a vehicle deceleration to be made can be determined from the driving safety-related parameters in the vehicle speed control device, and the second irreversible belt tensioner can be activated when a predetermined vehicle deceleration is exceeded. This ensures that the irreversible belt tensioner is actuated only when a predetermined vehicle deceleration is exceeded, the predetermined vehicle deceleration advantageously being selected such that an unavoidable accident can be deduced.
  • the reversible belt tensioner can be controlled when a first or second predetermined vehicle deceleration is exceeded, and the irreversible belt tensioner can be activated when a third predetermined vehicle deceleration is exceeded, the first and second predetermined vehicle deceleration being smaller than the third predetermined vehicle deceleration are.
  • a control method for a reversible belt tensioner for a motor vehicle is proposed in which driving safety-relevant parameters are detected in a device, in a vehicle speed control device the ascertained driving safety relevant parameters are compared with predetermined limits of the driving safety relevant parameters .
  • one or more predetermined limit values of the vehicle delays are stored in a memory unit, and the limit values of the vehicle delays and the calculated advancing vehicle delays are compared in a comparison device,
  • the reversible belt tensioner is calculated by the calculated vehicle decelerations to be carried out.
  • the proposed control method has the advantage that the reversible belt tensioner is controlled directly as a function of the vehicle deceleration to be made. As a result, the belt force is always increased when the occupant would be subject to increased forward displacement due to the vehicle deceleration to be made. This occupant forward displacement is then minimized by the increased restraining force by the controlled reversible belt tensioner or else prevented.
  • the vehicle deceleration made by the vehicle speed control device can take place in any desired manner, such as, for example, brake intervention, injection suppression, throttle control, switching from engine to generator operation of an electric drive, etc. Important in the invention is merely that the reversible belt tensioner is driven coupled to the vehicle to be made delay.
  • the storage units and comparison devices may be assigned individually or jointly to the vehicle speed control device, the reversible belt tensioner, or may also be designed as separate units.
  • the driving safety-relevant parameters are formed from one or more of the following variables,
  • the distance and the speed to the next object located in the direction of travel represent very important parameters, by which, for example, the situation of a second vehicle shattering in front of the vehicle, an approach to a jam end or also a stationary bridge pier in front of the vehicle in the direction of travel be taken into account for controlling the driving speed. Furthermore, it is to consider the slip between the wheels and the roadway, which can take into account the sudden slipping of the wheels on slippery roads. The driving speed is then automatically reduced until the slip falls below an accepted target value and the driving-critical situation is completed.
  • a further preferred embodiment of the control method is that several predetermined limit values of the vehicle decelerations are stored in the memory unit and the reversible belt tensioner is controlled differently when the limit values are exceeded.
  • the predetermined limits may be e.g. be stepped such that for larger anticipated vehicle decelerations of the belt tensioner generates a higher tension force or is exceeded when exceeding a vehicle deceleration, which suggests an unavoidable accident, not driven, if an irreversible belt tensioner is provided, which is controlled by the reversible The belt tensioner should not be disturbed in its function.
  • Fig.l Motor vehicle with Fahr Anthonysregeleinrich- direction and seat belt system with reversible belt tensioner
  • FIG.2 Safety belt system with reversible belt tensioner
  • FIG. 3 Travel speed control device with memory unit and evaluation unit for controlling the reversible belt tensioner
  • the safety belt 8 is, as can also be seen in FIG. 2, designed as a three-point belt and fastened with its ends to the motor vehicle 1 via an end fitting 14 and a belt retractor provided with a reversible belt tensioner 6 and an irreversible belt tensioner 17. Furthermore, the safety belt 8 is fastened in a belt lock 9 by means of a belt tongue.
  • the reversible belt tensioner 6 and the irreversible belt tensioner 17 are assigned here to the belt reel-up, but can also be used with the same effect
  • FIG. 1 also shows a device 4 for determining driving safety-relevant parameters K, which transmits the determined data to a vehicle speed control device 5.
  • Driving speed control devices are known, for example, under the terms ACC (Adaptive Cruise Control) or active cruise control.
  • ACC Adaptive Cruise Control
  • the driver can set a desired speed which the vehicle automatically adopts.
  • the driving speed is readjusted to the desired speed, even in the case of sudden inclines or inclines, by automatically accelerating or decelerating.
  • the driving speed control device 5 is Control of the reversible belt tensioner 6 connected to this via a signal line.
  • the facility 4 determines the driving safety-relevant parameters K. These may be, for example, the distance S or the speed difference ⁇ V to the next object in the direction of travel or the current slip T or an external signal E of a traffic control system for controlling the driving speed or even the determination of an error F by a fault diagnosis system, such as failure of a Brake, sudden oil loss, etc.
  • the determined parameters K are then fed to a first comparison device 15, in which these are compared with predetermined limits KG read out from a first memory unit 16.
  • the rever- sible belt tensioner 6 is actuated and the restraining force of the occupant is correspondingly increased by the safety belt 8.
  • the tightening of the seat belt 8 takes place even before the actual vehicle deceleration ar, so that the seat belt 8 is barely tightened when the occupant still performs no forward displacement due to the made vehicle deceleration a r .
  • the belt force is already increased at the beginning of the occupant delay and coupled to the occupant at the earliest possible time to the vehicle deceleration.
  • Various predetermined limit values of the vehicle decelerations aci, aG2, aG3, etc., to be undertaken may be provided, to which different belt forces of the reversible belt tensioner 6 to be generated are assigned.
  • FIG. 4 shows a driving situation with the motor vehicles A and B by way of example.
  • the motor vehicle A an activation of the belt tensioner according to the invention is provided.
  • Vehicle B overtakes vehicle A, so that the predetermined minimum distance SG has fallen below.
  • the reversible belt tensioner is activated and the driving speed is reduced.
  • the occupant senses in this process both the speed reduction and the early increase of the restraint force as coupled operations that complement each other meaningfully and thus has a positive sense of active safety.
  • the vehicle deceleration to be made can also be achieved by the transmission of an external signal E from an external traffic management system 12 or a signal generator 13 for the one-time reduction of the driving speed are generated.

Abstract

L'invention concerne un système de ceinture de sécurité avec un tendeur de ceinture réversible (6) pour un véhicule automobile (1) et un procédé de commande pour un tendeur de ceinture réversible et propose que le véhicule automobile possède un dispositif de régulation de la vitesse de conduite (5) destiné à réguler la vitesse de conduite en fonction de paramètres (K) pertinents pour la sécurité de la conduite et que le tendeur de ceinture réversible (6) puisse être piloté par le dispositif de régulation de la vitesse de conduite (5).
PCT/EP2009/001508 2008-03-17 2009-03-04 Système de ceinture de sécurité avec un tendeur de ceinture réversible et procédé de commande pour un tendeur de ceinture réversible WO2009115185A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008014393.6 2008-03-17
DE102008014393 2008-03-17

Publications (1)

Publication Number Publication Date
WO2009115185A1 true WO2009115185A1 (fr) 2009-09-24

Family

ID=40822389

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/001508 WO2009115185A1 (fr) 2008-03-17 2009-03-04 Système de ceinture de sécurité avec un tendeur de ceinture réversible et procédé de commande pour un tendeur de ceinture réversible

Country Status (1)

Country Link
WO (1) WO2009115185A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011016229A1 (de) * 2011-04-06 2012-10-11 Audi Ag Kraftfahrzeug
FR2987015A1 (fr) * 2012-02-17 2013-08-23 Peugeot Citroen Automobiles Sa Systeme de protection des passagers d'un vehicule et procede de mise en oeuvre d'un tel systeme en situation de survirage ou de sous-virage

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4411184A1 (de) * 1993-03-31 1994-10-06 Nissan Motor Passagier-Rückhaltegurtsystem
DE19941435A1 (de) * 1999-08-30 2001-04-05 Autoliv Dev Mehrstufige Sicherheitsgurt-Straffvorrichtung
DE10029061A1 (de) * 2000-06-13 2002-01-10 Breed Automotive Tech Rückhaltevorrichtung
DE102004010835A1 (de) * 2003-03-06 2004-09-30 Honda Motor Co., Ltd. Sitzgurtvorrichtung
WO2004085220A1 (fr) * 2003-03-26 2004-10-07 Continental Teves Ag & Co. Ohg Systeme de commande electronique d'un vehicule et procede permettant de determiner au moins une intervention, independante du conducteur, dans un systeme vehicule
DE102006010275A1 (de) * 2005-03-03 2006-12-14 Continental Teves Ag & Co. Ohg Verfahren und Vorrichtung zum Vermeiden einer Kollision bei einem Spurwechsel eines Fahrzeugs

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4411184A1 (de) * 1993-03-31 1994-10-06 Nissan Motor Passagier-Rückhaltegurtsystem
DE19941435A1 (de) * 1999-08-30 2001-04-05 Autoliv Dev Mehrstufige Sicherheitsgurt-Straffvorrichtung
DE10029061A1 (de) * 2000-06-13 2002-01-10 Breed Automotive Tech Rückhaltevorrichtung
DE102004010835A1 (de) * 2003-03-06 2004-09-30 Honda Motor Co., Ltd. Sitzgurtvorrichtung
WO2004085220A1 (fr) * 2003-03-26 2004-10-07 Continental Teves Ag & Co. Ohg Systeme de commande electronique d'un vehicule et procede permettant de determiner au moins une intervention, independante du conducteur, dans un systeme vehicule
DE102006010275A1 (de) * 2005-03-03 2006-12-14 Continental Teves Ag & Co. Ohg Verfahren und Vorrichtung zum Vermeiden einer Kollision bei einem Spurwechsel eines Fahrzeugs

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011016229A1 (de) * 2011-04-06 2012-10-11 Audi Ag Kraftfahrzeug
US9527407B2 (en) 2011-04-06 2016-12-27 Audi Ag Motor vehicle with driving safety feature
DE102011016229B4 (de) * 2011-04-06 2017-08-31 Audi Ag Kraftfahrzeug
FR2987015A1 (fr) * 2012-02-17 2013-08-23 Peugeot Citroen Automobiles Sa Systeme de protection des passagers d'un vehicule et procede de mise en oeuvre d'un tel systeme en situation de survirage ou de sous-virage

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