DE102007058279A1 - Belt tightener/pretensioner for seat belt system of vehicle, has electric driving device coupled with drive component and causing pre-tightening, where electric driving device engages directly at drive component - Google Patents
Belt tightener/pretensioner for seat belt system of vehicle, has electric driving device coupled with drive component and causing pre-tightening, where electric driving device engages directly at drive component Download PDFInfo
- Publication number
- DE102007058279A1 DE102007058279A1 DE200710058279 DE102007058279A DE102007058279A1 DE 102007058279 A1 DE102007058279 A1 DE 102007058279A1 DE 200710058279 DE200710058279 DE 200710058279 DE 102007058279 A DE102007058279 A DE 102007058279A DE 102007058279 A1 DE102007058279 A1 DE 102007058279A1
- Authority
- DE
- Germany
- Prior art keywords
- drive element
- drive component
- driving device
- belt
- electric driving
- 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.)
- Withdrawn
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
- B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
-
- 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
- B60R2022/4642—Reels with means to tension the belt in an emergency by forced winding up characterised by fluid actuators, e.g. pyrotechnic gas generators the gas directly propelling a flexible driving means, e.g. a plurality of successive masses, in a tubular chamber
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
Description
Die Erfindung betrifft einen Gurtstraffer für ein Sicherheitsgurtsystem mit einem Antriebselement, das mit einer Gurtspule koppelbar ist, und einer pyrotechnischen Antriebseinrichtung, die auf das Antriebselement wirkt.The The invention relates to a belt tensioner for a safety belt system with a drive element which can be coupled with a belt spool, and a pyrotechnic drive device acting on the drive element acts.
Ein
derartiger Gurtstraffer ist beispielsweise aus der
Aufgabe der Erfindung ist es, einen Gurtstraffer der eingangs genannten Art bereitzustellen, der mit geringem Aufwand eine Vorstraffung bewirken kann.task The invention is a belt tensioner of the aforementioned To provide kind of, with little effort, a pre-tightening can cause.
Zu diesem Zweck ist bei dem eingangs genannten Gurtstraffer eine elektromotorische Antriebseinrichtung vorgesehen, die mit dem Antriebselement gekoppelt ist und eine Vorstraffung bewirkt. Mittels der elektromotorischen Antriebseinrichtung kann eine sogenannte Pre-Safe- oder Pre-Crash-Funktion realisiert werden, um bei einem erwarteten Unfall für eine höhere Sicherheit zu sorgen. Dabei wird der Sicherheitsgurt leicht vorgestrafft. Wenn kein Unfall geschieht, wird die vorgenommene Aktion rückgängig gemacht. Erfindungsgemäß wird sowohl die Vorstraffung (mittels der elektromotorischen Antriebseinrichtung) als auch die Leistungsstraffung (mittels der pyrotechnischen Antriebseinrichtung) durch Betätigung ein und desselben Antriebselementes bewirkt. Daher ist die Bauteilanzahl reduziert. Ein solcher Gurtstraffer ist deshalb kostengünstig.To This purpose is in the aforementioned belt tensioner an electromotive Drive device provided which is coupled to the drive element is and causes a pre-tightening. By means of the electromotive Drive means may be a so-called pre-safe or pre-crash function to be realized in an expected accident for a to ensure greater security. This is the seat belt slightly pre-tightened. If no accident happens, the will be done Undo action. According to the invention both the pre-tightening (by means of the electric motor drive device) as well as the power lift (by means of the pyrotechnic drive device) operated by actuation of one and the same drive element. Therefore, the number of components is reduced. Such a belt tensioner is therefore inexpensive.
Insbesondere ist das Antriebselement ein Hohlrad mit einer Innenverzahnung. Die Innenverzahnung des Antriebselementes kann mit einem Ritzel kämmen, das mit der Gurtspule verbunden ist.Especially the drive element is a ring gear with an internal toothing. The Internal toothing of the drive element can mesh with a pinion, which is connected to the belt reel.
Vorzugsweise weist das Antriebselement einen Bereich aufweist, in dem keine Innenverzahnung vorgesehen ist. In der Ausgangsstellung, also wenn weder die pyrotechnische noch die elektromotorische Antriebseinrichtung wirksam geworden ist, greift das Ritzel nicht in die Innenverzahnung des Antriebselementes ein. Daher kann im Normalbetrieb des Gurtaufrollers Gurtband von der Gurtspule auf- bzw. abgewickelt werden, ohne daß der Gurtstraffer dies behindern würde. Sobald die elektromotorische Antriebseinrichtung wirksam wird, kämmt die Innenverzahnung des Antriebselementes mit dem Ritzel, wodurch Gurtband eingezogen wird.Preferably the drive element has a region in which no internal toothing provided is. In the starting position, so if neither the pyrotechnic nor the electromotive drive device has become effective is, the pinion does not engage in the internal toothing of the drive element one. Therefore, in normal operation of the belt retractor webbing of the belt reel up or unwound without the Belt tensioners would hinder this. Once the electromotive Drive device is effective combs the internal teeth the drive element with the pinion, causing webbing retracted becomes.
Die elektromotorische Antriebseinrichtung kann versetzt zum Ritzel am Antriebselement angreifen, d. h. das Ritzel ist in Längsrichtung der Gurtspule gesehen versetzt zur elektromotorischen Antriebseinrichtung. Die elektromotorische Antriebseinrichtung kann deshalb gegebenenfalls in bereits bestehenden Gurtaufrollern nachgerüstet werden.The electromotive drive device can be offset from the pinion on Attack drive element, d. H. the pinion is in the longitudinal direction the belt reel seen offset to the electric motor drive device. The electromotive drive device may therefore possibly be retrofitted in existing belt retractors.
Vorzugsweise hat das Antriebselement einen Flügelansatz, an dem die pyrotechnische Antriebseinrichtung angreift. Insbesondere greift ein Kraftübertragungselement bei Aktivierung eines Gasgenerators an dem radial nach außen vorstehenden Flügelansatz an und verursacht dadurch eine Drehung des Antriebselementes.Preferably the drive element has a wing approach, where the pyrotechnic drive device attacks. In particular, attacks a power transmission element upon activation of a gas generator on the radially outwardly projecting wing approach and thereby causes a rotation of the drive element.
Vorzugsweise greift die elektromotorische Antriebseinrichtung direkt am Antriebselement an. Da keine Bauteile dazwischengeschalten sind, wird ein kleiner Bauraum benötigt.Preferably engages the electric motor drive device directly on the drive element at. Since no components are interposed, a smaller Space required.
Vorzugsweise greift die pyrotechnische Antriebseinrichtung direkt am Antriebselement an, weshalb ein kleiner Bauraum benötigt wird.Preferably engages the pyrotechnic drive device directly on the drive element why a small space is needed.
Weitere Merkmale und Vorteile ergeben sich aus den Unteransprüchen.Further Features and advantages emerge from the dependent claims.
Die Erfindung wird nachfolgend anhand einer Ausführungsform beschrieben, die in den Zeichnungen dargestellt ist. In den Zeichnungen zeigen:The Invention will be described below with reference to an embodiment described, which is illustrated in the drawings. In the drawings demonstrate:
In
den
Weiterhin
ist ein Antriebselement
Das
Antriebselement
Dem
Flügelansatz
Weiterhin
ist eine elektromotorische Antriebseinrichtung
Im
folgenden wird auf die Funktionsweise des Gurtstraffers
Im
Normalbetrieb kann sich die Gurtspule ungehindert in Auf- und Abwickelrichtung
drehen, da das Ritzet
Unmittelbar
vor einem erwarteten Aufprall eines Fahrzeugs auf ein Hindernis
erfolgt eine Vorstraffung des Sicherheitsgurtes, was als Pre-Safe-
oder Pre-Crash-Funktion bekannt ist. Die elektromotorische Antriebseinrichtung
Tritt
kein Unfall auf, d. h. ist keine Leistungsstraffung notwendig, wird
die Welle
Tritt
eine Unfallsituation ein, wird die pyrotechnische Antriebseinrichtung
Wenn
vor der Leistungsstraffung vorgestrafft wurde, dann ist das Ritzel
Sowohl
die elektromotorische Antriebseinrichtung als auch die pyrotechnische
Antriebseinrichtung greifen direkt am Antriebselement
In
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 102006031369 A1 [0002] DE 102006031369 A1 [0002]
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710058279 DE102007058279A1 (en) | 2007-12-04 | 2007-12-04 | Belt tightener/pretensioner for seat belt system of vehicle, has electric driving device coupled with drive component and causing pre-tightening, where electric driving device engages directly at drive component |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710058279 DE102007058279A1 (en) | 2007-12-04 | 2007-12-04 | Belt tightener/pretensioner for seat belt system of vehicle, has electric driving device coupled with drive component and causing pre-tightening, where electric driving device engages directly at drive component |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102007058279A1 true DE102007058279A1 (en) | 2009-06-10 |
Family
ID=40621031
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200710058279 Withdrawn DE102007058279A1 (en) | 2007-12-04 | 2007-12-04 | Belt tightener/pretensioner for seat belt system of vehicle, has electric driving device coupled with drive component and causing pre-tightening, where electric driving device engages directly at drive component |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102007058279A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2514642A1 (en) * | 2009-12-15 | 2012-10-24 | Takata Corp. | Seat belt retractor and seat belt device provided therewith |
EP3805054B1 (en) * | 2019-10-09 | 2024-03-20 | Autoliv Development AB | Electromotor unit for a reversible seat belt retractor and method for operating a seat belt retractor |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10044426A1 (en) * | 1999-09-10 | 2001-04-26 | Nsk Autoliv Co Ltd | Seat belt apparatus in vehicle, regulates seat belt tension before and after impact according to the output signal from impact prediction sensor and impact detector |
DE102006007298A1 (en) * | 2006-02-16 | 2007-08-30 | Trw Automotive Gmbh | Seat belt tightener for safety seat belt system, has guide for power transmission unit formed in housing, where radial distance of guide from center point of circular path is different in starting position and end position of drive unit |
DE102006031369A1 (en) | 2006-04-03 | 2007-10-04 | Trw Automotive Gmbh | Belt pre-load device for safety seat belt system of vehicle, has drive unit, and power transmission unit, which engages at drive section during activation of drive unit, where drive section is movable on circular path |
-
2007
- 2007-12-04 DE DE200710058279 patent/DE102007058279A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10044426A1 (en) * | 1999-09-10 | 2001-04-26 | Nsk Autoliv Co Ltd | Seat belt apparatus in vehicle, regulates seat belt tension before and after impact according to the output signal from impact prediction sensor and impact detector |
DE102006007298A1 (en) * | 2006-02-16 | 2007-08-30 | Trw Automotive Gmbh | Seat belt tightener for safety seat belt system, has guide for power transmission unit formed in housing, where radial distance of guide from center point of circular path is different in starting position and end position of drive unit |
DE102006031369A1 (en) | 2006-04-03 | 2007-10-04 | Trw Automotive Gmbh | Belt pre-load device for safety seat belt system of vehicle, has drive unit, and power transmission unit, which engages at drive section during activation of drive unit, where drive section is movable on circular path |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2514642A1 (en) * | 2009-12-15 | 2012-10-24 | Takata Corp. | Seat belt retractor and seat belt device provided therewith |
EP2514642A4 (en) * | 2009-12-15 | 2013-06-26 | Takata Corp | Seat belt retractor and seat belt device provided therewith |
US8746803B2 (en) | 2009-12-15 | 2014-06-10 | Takata Corporation | Seat belt retractor and seat belt apparatus including the same |
EP3805054B1 (en) * | 2019-10-09 | 2024-03-20 | Autoliv Development AB | Electromotor unit for a reversible seat belt retractor and method for operating a seat belt retractor |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
R005 | Application deemed withdrawn due to failure to request examination | ||
R005 | Application deemed withdrawn due to failure to request examination |
Effective date: 20141205 |