WO2008052608A1 - Procédé d'activation d'un tendeur de ceinture réversible d'une ceinture de sécurité dans une automobile - Google Patents

Procédé d'activation d'un tendeur de ceinture réversible d'une ceinture de sécurité dans une automobile Download PDF

Info

Publication number
WO2008052608A1
WO2008052608A1 PCT/EP2007/006928 EP2007006928W WO2008052608A1 WO 2008052608 A1 WO2008052608 A1 WO 2008052608A1 EP 2007006928 W EP2007006928 W EP 2007006928W WO 2008052608 A1 WO2008052608 A1 WO 2008052608A1
Authority
WO
WIPO (PCT)
Prior art keywords
belt
vehicle
tensioner
detected
belt tensioner
Prior art date
Application number
PCT/EP2007/006928
Other languages
German (de)
English (en)
Inventor
Werner Bernzen
Dominic Reutter
Original Assignee
Daimler Ag
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 Daimler Ag filed Critical Daimler Ag
Publication of WO2008052608A1 publication Critical patent/WO2008052608A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/34—Belt retractors, e.g. reels
    • B60R22/36—Belt retractors, e.g. reels self-locking in an emergency
    • B60R22/415—Belt retractors, e.g. reels self-locking in an emergency with additional means allowing a permanent locking of the retractor during the wearing of the belt
    • 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
    • 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
    • B60R2021/01122—Prevention of malfunction
    • B60R2021/01184—Fault detection or diagnostic circuits
    • 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
    • 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
    • B60R2021/01304—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 monitoring rough road condition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/34—Belt retractors, e.g. reels
    • B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
    • B60R2022/4666—Reels with means to tension the belt in an emergency by forced winding up characterised by electric actuators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/34—Belt retractors, e.g. reels
    • B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
    • B60R2022/469—Reels with means to tension the belt in an emergency by forced winding up reusable

Definitions

  • the invention relates to a method for controlling a reversible belt tensioner of a safety belt in a motor vehicle according to the preamble of patent claim 1.
  • Conventional restraint belt systems in automobiles include a wind-up mechanism for automatically winding the loose webbing around a belt spool.
  • the automatic winding ensures that the applied belt loosely and comfortably rests against the body of an occupant and is rolled up when not using the seat belt around the belt reel (comfort state).
  • the unwinding of the belt in the comfort state is easily possible with a belt on to give the occupants extensive freedom of movement. In this case, a low torque is generated against the unwinding direction by a return spring.
  • a belt pullout is additionally available. This prevents from a predetermined acceleration of the belt reel in the unwinding and / or from a predetermined acceleration of the vehicle, the unwinding of the webbing.
  • These include a belt-sensitive sensor and a vehicle-sensitive sensor provided, which are usually part of the belt system. The response of one of these two sensors, for example, the vehicle-sensitive acceleration sensor due to a lying above a threshold acceleration of the vehicle (blocking threshold) prevents unwinding of the webbing.
  • reversible belt tensioners In vehicles reversible belt tensioners are used, which can be triggered several times, even in rapid succession, to shorten the loose webbing in an accident and / or to pull an occupant to the back of the seat out in a position with reduced risk of injury.
  • These reversible belt tensioners can have different drives.
  • a reversible belt tensioner can be driven by an electric motor, which acts permanently or via a clutch controllable on the belt reel.
  • Such reversible belt tensioners allow a tightening of the seat belt with predetermined strength, specifiable speed and predetermined time.
  • the multiple releasability of the reversible belt tensioner enables it to be triggered in a preventative manner.
  • a reversible belt tensioner can also be used for haptic warning of the driver in safety-critical situations.
  • a seized normal driving operation is present if the assessment of the situation by a control unit or a hazard computer does not indicate a safety-critical situation, or if the necessary for the release of the belt tensioner condition is no longer met.
  • a condition may be the presence or absence of a particular signal on a data bus or a data line. If, for example, a critical driving situation or a critical object approach is no longer present, it is assumed that the dangerous situation has ended.
  • a pawl is to be solved by a blocking teeth in a conventional blocking in motor vehicles.
  • electromechanically there is also the possibility of the electromotive drive of the belt tensioner for a short time or to control a small angle of rotation in the winding.
  • an indicative of the opening of the blocking device size is detected and the belt tensioner is controlled in such a way that the belt reel just turns so far that the blocking device of the belt reel opens and the webbing for unwinding releases.
  • the belt tensioner is controlled in such a way that the belt reel just turns so far that the blocking device of the belt reel opens and the webbing for unwinding releases.
  • the belt pull-out lock it is only possible to open the blocking device if at the same time neither the vehicle-sensitive nor the belt-sensitive sensor activates the belt pull-out lock.
  • the case may occur that a return to the comfort state is prevented due to a belt-sensitive or a vehicle-sensitive sensor, which are usually mechanically coupled to the belt pullout. If the belt pullout is effective, it is no longer possible to handle the streamlined webbing and the freedom of movement of an occupant is severely limited.
  • the drive of the belt tensioner is driven in an opening mode in such a way that initially in a winding phase, the belt reel rotates by a certain angle in the winding, and is driven in a subsequent holding phase, the drive of the belt tensioner for a predetermined holding time, that the belt reel is held in its angular position.
  • a belt-sensitive sensor can respond in particular if, after a belt tightening, a released belt is released while it is under a tensile load. If the unwinding of the webbing is too fast, the belt-sensitive sensor responds and the belt-extractor lock is usually mechanically activated and effective. According to EP1451045B1 therefore an indicative of the belt force size is detected and only when it suggests a decrease in the belt force initiates an opening mode.
  • the Gurtauszugssperre is effective even when the vehicle-sensitive acceleration sensor responds due to the vehicle movement, such as a braking or steering maneuver, a strong sway of the vehicle or a fast cornering.
  • the opening mode of the belt tensioner is requested in a release time, which is determined by means of an algorithm based on a model of the acceleration sensor using at least one variable characterizing the driving dynamics.
  • safety belts always have two independent locking mechanisms due to legal regulations, namely a belt-sensitive and an acceleration-sensitive lock.
  • the acceleration-sensitive lock locks the belt extension when a resulting vehicle acceleration above a blocking threshold of 0.3 g occurs, all three force components, so in the x-, y-, and z-direction come to bear.
  • the method using a sensor provided in the antilock brake control (ABS) of the vehicle provides information about the physical profile of the road surface, which can be used in real time for cruise control, suspension adaptation or for forecasting in a navigation device.
  • ABS antilock brake control
  • the object of the invention is to improve the safety, reliability and comfort of a restraint belt system with a reversible belt tensioner. This object is solved by the features of claim 1.
  • a reversible belt tensioner in a motor vehicle is triggered as a result of a detected dangerous situation, then a restraint belt of a belt system is tightened.
  • the belt system comprises a belt pull-out lock which can be activated by an acceleration sensor and which, when activated, causes the restraining belt to be unwound from a belt reel.
  • the belt tensioner is driven with a release signal to allow the free unwinding of the webbing and to bring about release of the Gurtauszugssperre.
  • it is detected in a poor road recognition by means of sensors whether the vehicle is moving on a poor road.
  • the release signal can only be set if it can be ruled out by means of the bad path recognition that the vehicle is moving on a poor road. In other words, a release signal can only be set if there is no bad path.
  • Bad travel can be achieved by different evaluations of sensor signals, e.g. detected in the ESP control unit. For example, increased levels of noise in the signals from the sensors for wheel speeds, longitudinal and lateral acceleration or yaw rate give indications of the road surface. Methods for determining the roughness of the driving surface are well known in the art.
  • a poor road can also be evaluated by evaluating the signals from vertical acceleration sensors Vehicle structure or spring travel sensors are detected, which contain suggestions from the road surface. As such, evaluation methods are well known in the art.
  • the sensors are typically used for comfort applications such as active damper control or Active Body Control (ABC). Due to the networking of all sensor signals by means of an information bus system, these sensor signals can also be used to conclude on the road condition. It is particularly advantageous to evaluate the different, available sensor signals in parallel and to use them for mutual plausibility.
  • the single FIGURE shows a flowchart of an advantageous embodiment of a method for controlling a reversible belt tensioner.
  • the method describes the control of the belt tensioner with a release signal to bring the belt back into a comfort state, after triggering the belt tensioner on the webbing acting blocking device the
  • Belt pullout lock has activated (blocking state). The process steps which have preceded which have led to the release of the belt tensioner are therefore not shown.
  • the control takes place in a release time, which initially using driving conditions
  • Driver activities and environmental data is determined.
  • other variables can also be used to determine the release time.
  • step 1 driving condition data such as wheel speeds, longitudinal and lateral acceleration, spin, yaw rate, yaw acceleration of the vehicle are detected or detected.
  • step 2 the driving state data are compared with the threshold value and, when the thresholds are not reached, they are concluded that the dangerous situation has ended.
  • step 3 data about the driver's activities is detected or determined, e.g. Brake pedal operation, accelerator operation, steering angle, alertness, load and the like. These data are compared with thresholds for further processing in step 4 and closed when the thresholds are below a risk situation.
  • step 5 environmental data of an environmental sensor system, such as radar, infrared distance measurement, imaging or short-range communication, are detected and evaluated with respect to a critical approach to a collision object.
  • step 6 a query is made as to whether the environmental data indicate that the dangerous situation has ended.
  • the results of the queries in steps 2, 4 and 6 are merged in step 7.
  • a point in time is determined at which the monitored variables are below the respectively predefinable threshold values or if all data are indicative of termination of the dangerous situation.
  • both the current time and a future time may be determined, e.g. including a mathematical model for the acceleration sensor of the blocking device, as disclosed in EP1644226A1.
  • step 8 further criteria are queried, which must be met to release a belt pullout.
  • the result of a bad road recognition 9 is queried, which determines by means of sensors, whether the vehicle is moving on a poor road.
  • sensors are used as they are also used to record the driving condition data in step 1.
  • step 10 of the reversible belt tensioner are controlled to release the belt pullout and thus to put the belt system from the blocking state in the comfort state.
  • the belt tensioner on an acting on the belt reel electromotive drive which when activated with the release signal, the belt spool as far as Winding rotates that in the blocking device, the teeth of a pawl of a complementary, with the belt spool mitfitenden teeth can be solved, whereby the Gurtauszugssperre is released.
  • the query carried out in step 8 can also take place at another time, for example, before step 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Automotive Seat Belt Assembly (AREA)

Abstract

L'invention concerne un procédé d'activation d'un tendeur réversible (1) d'une ceinture de sécurité dans une automobile, la ceinture de sécurité présentant, en tant que dispositif de blocage de déroulement de la ceinture, un dispositif de blocage qui agit sur la bobine dans le sens de déroulement et réagit à l'apparition d'une accélération du véhicule de manière bloquante au-dessus d'un seuil de blocage. Après un déclenchement du tendeur de ceinture conditionné par une situation de danger et lors de l'achèvement de la situation de danger (7), le tendeur de ceinture est contrôlé par un signal de déblocage, pour provoquer le déblocage du dispositif de blocage de déroulement de la ceinture en l'amenant d'un état de blocage à un état de confort. On recommande selon l'invention que des capteurs (1) détectent une identification de terrain accidenté (9) et qu'un signal de déclenchement ne soit donné qu'en l'absence de terrain accidenté.
PCT/EP2007/006928 2006-11-03 2007-08-06 Procédé d'activation d'un tendeur de ceinture réversible d'une ceinture de sécurité dans une automobile WO2008052608A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006051786.5 2006-11-03
DE200610051786 DE102006051786B3 (de) 2006-11-03 2006-11-03 Verfahren zur Ansteuerung eines reversiblen Gurtstraffers eines Sicherheitsgurtes in einem Kraftfahrzeug

Publications (1)

Publication Number Publication Date
WO2008052608A1 true WO2008052608A1 (fr) 2008-05-08

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PCT/EP2007/006928 WO2008052608A1 (fr) 2006-11-03 2007-08-06 Procédé d'activation d'un tendeur de ceinture réversible d'une ceinture de sécurité dans une automobile

Country Status (2)

Country Link
DE (1) DE102006051786B3 (fr)
WO (1) WO2008052608A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009049195A1 (de) * 2009-10-13 2011-04-21 Daimler Ag Verfahren für eine fahrdynamische Adaption einer Insassenfixierung
EP2594439A1 (fr) * 2011-11-16 2013-05-22 Volvo Car Corporation Agencement et procédé de retenue de l'occupant et protection
US11247626B2 (en) * 2016-11-10 2022-02-15 Robert Bosch Gmbh Method for controlling a passenger protection device
US20220153225A1 (en) * 2020-11-17 2022-05-19 Polaris Industries Inc. Utility vehicle

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US8463502B2 (en) 2008-06-18 2013-06-11 Daimler Ag Motor vehicle and braking process
DE102008050317A1 (de) * 2008-10-02 2010-05-12 Daimler Ag Verfahren zur dynamischen Fixierung eines Fahrzeuginsassen
DE102008050316B4 (de) * 2008-10-02 2015-06-25 Daimler Ag Verfahren und Vorrichtung zur dynamischen Fixierung eines Fahrzeuginsassen
DE102011106247B4 (de) 2011-07-01 2014-05-28 Audi Ag Verfahren zum Steuern eines reversiblen Gurtstraffers eines Sicherheitsgurts in einem Kraftfahrzeug
DE102012206426B4 (de) * 2012-04-19 2020-10-15 Robert Bosch Gmbh Verfahren und Vorrichtung zum Schutz eines Fahrzeuginsassen bei einem Aufprall eines Objektes auf ein Fahrzeug
DE102012110082A1 (de) * 2012-10-23 2014-04-24 Continental Automotive Gmbh Verfahren zum Steuern von Sicherheitseinrichtungen eines Kraftfahrzeugs im Falle einer Böschungsfahrt
US9517767B1 (en) * 2015-11-04 2016-12-13 Zoox, Inc. Internal safety systems for robotic vehicles
US9494940B1 (en) 2015-11-04 2016-11-15 Zoox, Inc. Quadrant configuration of robotic vehicles
DE102019101917A1 (de) * 2019-01-25 2020-07-30 Trw Automotive Gmbh Gurtaufrollersystem und Verfahren zum Sperren eines Gurtaufrollers

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DE19537257A1 (de) 1994-10-14 1996-04-18 Volkswagen Ag Verfahren zur Ermittlung des physikalischen Profils einer Fahrbahnoberfläche
DE19962800A1 (de) * 1998-12-25 2000-06-29 Takata Corp Sitzgurtsystem
EP1339575A1 (fr) 2000-12-08 2003-09-03 DaimlerChrysler AG Procede d'activation d'un tendeur de ceinture reversible
EP1451045A1 (fr) 2001-12-06 2004-09-01 DaimlerChrysler AG Procede d'actionnement d'un pretendeur de ceinture reversible
DE10332024A1 (de) 2003-07-15 2005-02-17 Daimlerchrysler Ag Verfahren zur Ansteuerung eines reversiblen Gurtstraffers in einem Kraftfahrzeug
DE10351403A1 (de) * 2003-11-04 2005-06-02 Trw Occupant Restraint Systems Gmbh & Co. Kg Fahrzeugsensitive Ansteuerung eines Sicherheitsgurtaufrollers

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DE19957802A1 (de) * 1999-12-01 2001-06-07 Trw Repa Gmbh Gurtaufrollersystem
DE10013870B4 (de) * 2000-03-21 2007-04-05 Key Safety Systems, Inc., Sterling Heights Gurtaufroller für einen Fahrzeugsicherheitsgurt
DE102004038167B4 (de) * 2004-08-06 2013-03-07 Daimler Ag Kraftfahrzeug mit einem präventiv wirkenden Schutzsystem
DE102004041521A1 (de) * 2004-08-27 2006-03-02 Robert Bosch Gmbh Verfahren und Vorrichtung zur Bewertung von Fahrsituationen

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Publication number Priority date Publication date Assignee Title
DE19537257A1 (de) 1994-10-14 1996-04-18 Volkswagen Ag Verfahren zur Ermittlung des physikalischen Profils einer Fahrbahnoberfläche
DE19962800A1 (de) * 1998-12-25 2000-06-29 Takata Corp Sitzgurtsystem
EP1339575A1 (fr) 2000-12-08 2003-09-03 DaimlerChrysler AG Procede d'activation d'un tendeur de ceinture reversible
EP1339574A1 (fr) 2000-12-08 2003-09-03 DaimlerChrysler AG Procede pour commander un tendeur de sangle reversible
EP1339574B1 (fr) * 2000-12-08 2006-03-29 DaimlerChrysler AG Procede pour commander un tendeur de sangle reversible
EP1451045A1 (fr) 2001-12-06 2004-09-01 DaimlerChrysler AG Procede d'actionnement d'un pretendeur de ceinture reversible
DE10332024A1 (de) 2003-07-15 2005-02-17 Daimlerchrysler Ag Verfahren zur Ansteuerung eines reversiblen Gurtstraffers in einem Kraftfahrzeug
EP1644226A1 (fr) 2003-07-15 2006-04-12 DaimlerChrysler AG Procede pour amorcer le fonctionnement d'un retracteur de ceinture reversible dans un ve hicule automobile
DE10351403A1 (de) * 2003-11-04 2005-06-02 Trw Occupant Restraint Systems Gmbh & Co. Kg Fahrzeugsensitive Ansteuerung eines Sicherheitsgurtaufrollers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009049195A1 (de) * 2009-10-13 2011-04-21 Daimler Ag Verfahren für eine fahrdynamische Adaption einer Insassenfixierung
EP2594439A1 (fr) * 2011-11-16 2013-05-22 Volvo Car Corporation Agencement et procédé de retenue de l'occupant et protection
US11247626B2 (en) * 2016-11-10 2022-02-15 Robert Bosch Gmbh Method for controlling a passenger protection device
US20220153225A1 (en) * 2020-11-17 2022-05-19 Polaris Industries Inc. Utility vehicle
US11760304B2 (en) * 2020-11-17 2023-09-19 Polaris Industries Inc. Utility vehicle

Also Published As

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