DE10052111B4 - Belt tensioner with a pyrotechnic drive and occupant restraint device for a vehicle, in particular for a motor vehicle - Google Patents
Belt tensioner with a pyrotechnic drive and occupant restraint device for a vehicle, in particular for a motor vehicle Download PDFInfo
- Publication number
- DE10052111B4 DE10052111B4 DE2000152111 DE10052111A DE10052111B4 DE 10052111 B4 DE10052111 B4 DE 10052111B4 DE 2000152111 DE2000152111 DE 2000152111 DE 10052111 A DE10052111 A DE 10052111A DE 10052111 B4 DE10052111 B4 DE 10052111B4
- Authority
- DE
- Germany
- Prior art keywords
- belt
- vehicle
- restraint device
- occupant restraint
- seat belt
- 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.)
- Expired - Fee Related
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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
- B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
- B60R22/4676—Reels with means to tension the belt in an emergency by forced winding up comprising energy-absorbing means operating between belt reel and retractor frame
-
- 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
- B60R22/28—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices
- B60R2022/282—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices using fluids or vico-elastic materials
-
- 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
- B60R22/28—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices
- B60R2022/288—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices with means to adjust or regulate the amount of energy to be absorbed
-
- 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
- B60R22/44—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions
- B60R2022/4473—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions using an electric retraction device
-
- 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
- B60R22/4628—Reels with means to tension the belt in an emergency by forced winding up characterised by fluid actuators, e.g. pyrotechnic gas generators
- B60R22/4633—Linear actuators, e.g. comprising a piston moving along reel axis and rotating along its own axis
- B60R2022/4638—Linear actuators, e.g. comprising a piston moving along reel axis and rotating along its own axis comprising a piston moving along or in parallel to the reel axis
-
- 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
- B60R22/4628—Reels with means to tension the belt in an emergency by forced winding up characterised by fluid actuators, e.g. pyrotechnic gas generators
- B60R2022/4657—Reels with means to tension the belt in an emergency by forced winding up characterised by fluid actuators, e.g. pyrotechnic gas generators comprising a plurality of charges
-
- 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
- B60R22/4628—Reels with means to tension the belt in an emergency by forced winding up characterised by fluid actuators, e.g. pyrotechnic gas generators
- B60R2022/4661—Reels with means to tension the belt in an emergency by forced winding up characterised by fluid actuators, e.g. pyrotechnic gas generators comprising venting means, e.g. for avoiding overpressure in case of fire or for allowing return motion with energy absorption
-
- 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
- B60R2022/468—Reels with means to tension the belt in an emergency by forced winding up characterised by clutching means between actuator and belt reel
-
- 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
- B60R2022/4685—Reels with means to tension the belt in an emergency by forced winding up with means to adjust or regulate the tensioning force in relation to external parameters
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
- Air Bags (AREA)
Abstract
Gurtstraffer mit einem pyrotechnischen Antrieb, wobei der pyrotechnische Antrieb (32) eine Mehrzahl von einzelnen Treibladungen (32a, 32b, 32c, 32d, 32e), die im Falle einer Kollision des Fahrzeugs jeweils allein oder zu mehreren aktivierbar sind, und ein in einer Ausgangsstellung mit Druckgas aus den Treibladungen (32a, 32b, 32c, 32d, 32e) beaufschlagbares Stellglied (22) umfasst, dadurch gekennzeichnet, dass das Stellglied (22) nach der Beaufschlagung mit dem Druckgas im Falle einer Multikollision um die mehrmalige Straffung des Sicherheitsgurtes zu ermöglichen reversibel in seine Ausgangsstellung zurückbewegbar ist.Belt tensioner with a pyrotechnic drive, the pyrotechnic drive (32) having a plurality of individual propellant charges (32a, 32b, 32c, 32d, 32e), which can be activated individually or in groups in the event of a collision of the vehicle, and one in an initial position comprises actuator (22) which can be acted upon with compressed gas from the propellant charges (32a, 32b, 32c, 32d, 32e), characterized in that the actuator (22) after being acted upon by the compressed gas in the event of a multiple collision to enable the seat belt to be tightened several times can be reversibly moved back to its original position.
Description
Die Erfindung betrifft einen Gurtstraffer mit einem pyrotechnischen Antrieb sowie eine Insassenrückhaltevorrichtung für ein Fahrzeug, insbesondere für ein Kraftfahrzeug, mit einem Sicherheitsgurt, einer Aufwickeleinrichtung zum Aufwickeln des Sicherheitsgurtes, sowie einem Gurtstraffer mit einem pyrotechnischen Antrieb.The invention relates to a belt tensioner with a pyrotechnic drive and an occupant restraint device for a vehicle, in particular for a motor vehicle, with a safety belt, a winding device for winding the seat belt, and a belt tensioner with a pyrotechnic drive.
Gurtstraffer für Kraftfahrzeuge sind in einer Vielzahl von Ausführungen aus dem Stand der Technik bekannt und dienen hauptsächlich dazu, den Sicherheitsgurt des Kraftfahrzeugs bei einer Kollision des Fahrzeugs zu straffen, um einen mit dem Sicherheitsgurt gesicherten Fahrzeuginsassen in eine optimale Sitzposition zu ziehen und ihn ggf. im Zusammenwirken mit weiteren Komponenten der Rückhaltevorrichtung, zum Beispiel einem Airbag, während der Kollision weitestgehend in der optimalen Sitzposition zu halten.Belt tensioners for motor vehicles are known in a variety of embodiments of the prior art and are mainly used to tighten the seat belt of the vehicle in a collision of the vehicle to pull a seat belt secured with the vehicle occupant in an optimal seating position and possibly in the Cooperation with other components of the restraint device, for example an airbag, to keep as far as possible in the optimum sitting position during the collision.
Aus der
Aus der
Obwohl bei Fahrzeugkollisionen der Anteil von Multikollisionen, das heißt mehreren in kurzen Zeitabständen aufeinanderfolgenden Kollisionen nicht unerheblich ist, können Gurtstraffer der eingangs genannten Art mit einem von einem pyrotechnischen Gasgenerator gebildeten Antrieb nach der Zündung des Gasgenerators nicht wiederverwendet werden, so dass es im Falle einer Multikollision nicht möglich ist, den Fahrzeuginsassen nach der ersten Kollision, bei welcher der Sicherheitsgurt gewöhnlich ausgezogen wird, wieder in die optimale Sitzposition für eine weitere Kollision zurückzuziehen und ihn während der weiteren Kollision in der optimalen Sitzposition festzuhalten.Although in vehicle collisions, the proportion of multicollision, that is several consecutive collisions in short time intervals is not insignificant, belt tensioners of the type mentioned can not be reused with a drive formed by a pyrotechnic gas generator after the ignition of the gas generator, so that in the case of a multi-collision it is not possible to retract the vehicle occupant after the first collision, in which the seat belt is usually pulled out, back into the optimal sitting position for another collision and to hold him in the optimum sitting position during the further collision.
Neben Gurtstraffern mit pyrotechnischem Antrieb sind im Stand der Technik auch Gurtstraffer mit elektromotorischem Antrieb bekannt, deren Vorteil vor allem darin liegt, dass diese Gurtstraffer mehrmals verwendet werden können, weil sich ihr Antrieb immer wieder reversibel in eine Ausgangsstellung zurückführen lässt. Allerdings weisen diese Gurtstraffer mit elektromotorischem Antrieb den Nachteil einer größeren Ansprechzeit und einer für schwere Fahrzeuginsassen nicht immer ausreichenden geringeren Rückhaltekraft auf.In addition to belt tensioners with pyrotechnic drive belt tensioners are known in the art with electric motor drive, the advantage is mainly that these belt tensioners can be used several times, because their drive can always be reversibly returned to a starting position. However, these belt tensioners with electric motor drive the disadvantage of a greater response time and a heavy vehicle occupants not always sufficient lower retention force.
Um den zuletzt genannten Nachteil zu kompensieren, ist es zum Beispiel aus der
Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, einen Gurtstraffer und eine Insassenrückhaltevorrichtung der eingangs genannten Art dahingehend zu verbessern, dass im Falle einer Multikollision des Fahrzeugs mit einem möglichst geringen konstruktiven Aufwand eine mehrmalige Straffung des Gurtes ermöglicht wird.Proceeding from this, the present invention seeks to improve a belt tensioner and an occupant restraint device of the type mentioned in that in the event of a multicollision of the vehicle with the least possible design effort a repeated tightening of the belt is possible.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass der pyrotechnische Antrieb eine Mehrzahl von einzelnen Treibladungen umfasst, die im Falle einer Kollision des Fahrzeugs jeweils allein oder zu mehreren aktivierbar sind.This object is achieved in that the pyrotechnic drive comprises a plurality of individual propellant charges, which in the event of a collision of the vehicle each alone or can be activated to several.
Durch die erfindungsgemäße Merkmalskombination wird es ermöglicht, den Gurtstraffer im Falle einer Multikollision des Fahrzeugs mehrmals zu aktivieren. Durch die wahlweise Zündung von einer oder mehreren Treibladungen können dabei je nach Bedarf sowohl geringere als auch höhere Zugkräfte in den Sicherheitsgurt eingeleitet werden, ersteres zum Beispiel um den infolge einer ersten Kollision des Fahrzeugs teilweise ausgezogenen Sicherheitsgurt wieder vorzustraffen oder einen ungünstig positionierten Fahrzeuginsassen in eine optimal Sitzposition zu ziehen und letzteres um den Sicherheitsgurt bei einer nachfolgenden Kollision ausreichend straff zu halten, so dass der Fahrzeuginsasse selbst dann in der optimalen Sitzposition festgehalten wird, wenn er ein großes Körpergewicht aufweist oder die nachfolgende Kollision sehr schwer ist.The feature combination according to the invention makes it possible to activate the belt tensioner several times in the event of a multicollision of the vehicle. As a result of the optional ignition of one or more propellant charges, both lower and higher tractive forces can be introduced into the seatbelt as required, for example to pre-stretch the seatbelt partially pulled out as a result of a first collision of the vehicle or to position an unfavorably positioned vehicle occupant in an optimum manner To pull sitting position and the latter to keep the seat belt sufficiently tight in a subsequent collision, so that the vehicle occupant is held even in the optimum sitting position, if he has a high body weight or the subsequent collision is very heavy.
Erfindungsgemäß umfasst der Gurtstraffer ein Stellglied, das in einer Ausgangsstellung mit Druckgas aus den Treibladungen beaufschlagbar ist, um den Gurt zu straffen, und das nach dem Straffen des Gurtes reversibel in seine Ausgangsstellung zurück bewegbar ist, vorzugsweise durch die vom Fahrzeuginsassen nach dem Straffen des Gurtes auf diesen ausgeübte Gurtkraft oder alternativ dazu elektromotorische, pyrotechnisch oder auch mechanisch. Das Stellglied ist vorzugsweise ein in einem Zylinder verschiebbarer Kolben, der zum Straffen des Sicherheitsgurtes zweckmäßig auf eine Aufwickelwelle eines Aufwickelmechanismus einwirkt, jedoch auch direkt auf den Sicherheitsgurt einwirken kann, indem es den Sicherheitsgurt an einer beliebigen Stelle zwischen zwei Rollen oder anderen Widerlagern in seitlicher Richtung auslenkt. According to the invention, the belt tensioner comprises an actuator which can be acted upon in a starting position with compressed gas from the propellant charges to tighten the belt, and which is reversible after tightening the belt reversibly back to its original position, preferably by the vehicle occupant after the tightening of the belt on this exerted belt force or alternatively electromotive, pyrotechnic or mechanical. The actuator is preferably a piston displaceable in a cylinder, which expediently acts on a take-up shaft of a take-up mechanism for tightening the safety belt, but can also act directly on the safety belt, by placing the safety belt anywhere between two rollers or other abutments in the lateral direction deflects.
Im folgenden wird die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Die einzige Figur zeigt eine Schnittansicht eines in eine Sicherheitsgurt-Aufwickeleinrichtung integrierten erfindungsgemäßen Gurtstraffers.In the following the invention will be explained in more detail with reference to an embodiment shown in the drawing. The sole FIGURE is a sectional view of a belt tensioner according to the invention integrated in a safety belt take-up device.
Die in der Zeichnung dargestellte Aufwickeleinrichtung
Im Unterschied zu den meisten herkömmlichen Aufwickeleinrichtungen wird die Aufwickelwelle
Der Stator
Um den Kolben
An der zum Aufroll- und Blockiermechanismus
Ein hinter der Kupplungsscheibe
Auch der Hohlraum
Die Spindel
Um im Falle einer Multikollision des Fahrzeugs eine mehrmalige Straffung des Sicherheitsgurtes
Weiter kann die Anzahl und/oder die Kombination der bei einer Kollision von der Airbag-Steuerung gezündeten Treibladungen
In einer beispielhaften Unfallsituation, bei der ein Kraftfahrzeug zuerst gegen eine Leitplanke fährt, anschließend von der Leitplanke zurückgeworfen wird und dann auf ein entgegenkommendes Fahrzeug oder ein Hindernis auf der entgegengesetzten Straßenseite prallt, wobei der Airbag ausgelöst wird, wird bei dem weniger starken Aufprall auf die Leitplanke zuerst nur eine einzige der Treibladungen z. B. die Treibladung
Nach dem Aufprall auf die Leitplanke wird der gestraffte Gurt
Sobald sich der Kolben wieder in seiner Ausgangslage befindet, wird das Ventil
Bei dieser zweiten Kollision läuft im wesentlichen derselbe Vorgang ab, außer dass nun bedingt durch die größere Unfallschwere die Treibladungen
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000152111 DE10052111B4 (en) | 2000-10-20 | 2000-10-20 | Belt tensioner with a pyrotechnic drive and occupant restraint device for a vehicle, in particular for a motor vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000152111 DE10052111B4 (en) | 2000-10-20 | 2000-10-20 | Belt tensioner with a pyrotechnic drive and occupant restraint device for a vehicle, in particular for a motor vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10052111A1 DE10052111A1 (en) | 2002-05-02 |
DE10052111B4 true DE10052111B4 (en) | 2011-07-21 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE2000152111 Expired - Fee Related DE10052111B4 (en) | 2000-10-20 | 2000-10-20 | Belt tensioner with a pyrotechnic drive and occupant restraint device for a vehicle, in particular for a motor vehicle |
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DE (1) | DE10052111B4 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10333952A1 (en) * | 2003-07-25 | 2005-02-24 | Autoliv Development Ab | Self-locking safety-belt reel for vehicle restraining system with shaft-integrated tightener drive has guide rod rotatably mounted on shaft body, connected to profile head of controllable locking system for belt shaft |
DE10342229A1 (en) * | 2003-09-11 | 2005-05-04 | Autoliv Dev | Safety belt winding-up device for motor vehicles has a tightening device and a drive mechanism linked to a safety belt shaft |
DE102005023496B4 (en) * | 2005-05-18 | 2008-05-08 | Takata-Petri Ag | Fastening device for a safety belt |
DE102007043863A1 (en) * | 2007-09-14 | 2009-03-26 | Trw Automotive Gmbh | Belt retractor has belt-pretensioner with pretensioning capacity, particularly pretensioning strength depending on variable body size or body weight, and belt-pretensioner has driving device |
DE102009005301B4 (en) * | 2009-01-16 | 2012-08-23 | Autoliv Development Ab | Reversible belt tensioner |
CN115027407B (en) * | 2022-05-13 | 2024-01-16 | 岚图汽车科技有限公司 | Safety belt force limiting device |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0893313A2 (en) * | 1997-07-23 | 1999-01-27 | Breed Automotive Technology, Inc. | Safety belt reeling device |
US6065704A (en) * | 1998-08-27 | 2000-05-23 | General Motors Corporation | Energy management for seat belt tensioner |
DE4332205C2 (en) * | 1993-09-22 | 2000-06-15 | Hs Tech & Design | Three-point seat belt system for a motor vehicle |
DE10001312A1 (en) * | 2000-01-14 | 2001-07-19 | Volkswagen Ag | Seat belt tensioner has tensioning unit for connection to safety belts in vehicle to tension belts in common when drive unit is activated; drive unit can contain electric motor or fluidic drive |
DE10027599C1 (en) * | 2000-06-02 | 2001-10-11 | Autoliv Dev | Automobile passenger seatbelt reel has electric motor used for tensioning spring used for displacement of toothed rack along threaded spindle |
EP1350697A2 (en) * | 1995-03-30 | 2003-10-08 | Automotive Systems Laboratory Inc. | Electronic seat belt tensioning system |
-
2000
- 2000-10-20 DE DE2000152111 patent/DE10052111B4/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4332205C2 (en) * | 1993-09-22 | 2000-06-15 | Hs Tech & Design | Three-point seat belt system for a motor vehicle |
EP1350697A2 (en) * | 1995-03-30 | 2003-10-08 | Automotive Systems Laboratory Inc. | Electronic seat belt tensioning system |
EP0893313A2 (en) * | 1997-07-23 | 1999-01-27 | Breed Automotive Technology, Inc. | Safety belt reeling device |
DE19731689A1 (en) * | 1997-07-23 | 1999-02-04 | Hs Tech & Design | Device for rolling up a seat belt |
US6065704A (en) * | 1998-08-27 | 2000-05-23 | General Motors Corporation | Energy management for seat belt tensioner |
DE10001312A1 (en) * | 2000-01-14 | 2001-07-19 | Volkswagen Ag | Seat belt tensioner has tensioning unit for connection to safety belts in vehicle to tension belts in common when drive unit is activated; drive unit can contain electric motor or fluidic drive |
DE10027599C1 (en) * | 2000-06-02 | 2001-10-11 | Autoliv Dev | Automobile passenger seatbelt reel has electric motor used for tensioning spring used for displacement of toothed rack along threaded spindle |
Also Published As
Publication number | Publication date |
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DE10052111A1 (en) | 2002-05-02 |
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Effective date: 20111022 |
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R085 | Willingness to licence withdrawn | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |