DE102006045198A1 - Belt retractor for seat belt system, has belt pretensioner provided with drive unit that is moved on circular path during activation of another drive unit and driving bevel, where former drive unit is directly supported in frame - Google Patents
Belt retractor for seat belt system, has belt pretensioner provided with drive unit that is moved on circular path during activation of another drive unit and driving bevel, where former drive unit is directly supported in frame Download PDFInfo
- Publication number
- DE102006045198A1 DE102006045198A1 DE200610045198 DE102006045198A DE102006045198A1 DE 102006045198 A1 DE102006045198 A1 DE 102006045198A1 DE 200610045198 DE200610045198 DE 200610045198 DE 102006045198 A DE102006045198 A DE 102006045198A DE 102006045198 A1 DE102006045198 A1 DE 102006045198A1
- Authority
- DE
- Germany
- Prior art keywords
- drive unit
- belt
- frame
- belt retractor
- retractor according
- 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- Withdrawn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
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
Description
Die Erfindung betrifft einen Gurtaufroller für ein Sicherheitsgurtsystem, umfassend eine in einem Rahmen drehbar gelagerte Gurtspule und einen seitlich am Rahmen angeordneten Gurtstraffer mit einem Straffergehäuse, einem mit der Gurtspule gekoppelten oder an diese ankoppelbaren Ritzel, einer Antriebseinheit und einem Antriebselement, das sich bei Aktivierung der Antriebseinheit auf einer Kreisbahn bewegt und das Ritzel antreibt.The The invention relates to a belt retractor for a safety belt system, comprising a belt reel rotatably mounted in a frame and a arranged laterally on the frame belt tensioner with a Straffergehäuse, a coupled with the belt spool or can be coupled to this pinion, a drive unit and a drive element which is activated the drive unit moves on a circular path and drives the pinion.
Ein
gattungsgemäßer Gurtaufroller
ist aus der
Die Erfindung schafft einen Gurtaufroller, der sich durch eine sichere Lagerung sämtlicher beweglicher Bauteile des Gurtstraffers bei geringem Bauraumbedarf in axialer Richtung auszeichnet.The Invention provides a belt retractor, which is protected by a secure Storage of all movable components of the belt tensioner in a small space requirement characterized in the axial direction.
Dies wird erfindungsgemäß bei einem Gurtaufroller der eingangs genannten Art dadurch erreicht, daß das Antriebselement unmittelbar im Rahmen gelagert ist. Auf diese Weise kann auf eine im Stand der Technik übliche zusätzliche Lagerplatte zur Lagerung des Antriebselements verzichtet werden. Dadurch lassen sich nicht nur ein Bauteil und damit Produktionskosten einsparen, sondern der erfindungsgemäße Gurtaufroller zeichnet sich auch durch besonders geringere Abmessungen in (bezüglich der Längsachse der Gurtspule) axialer Richtung aus.This is inventively in a Belt retractor of the type mentioned achieved in that the drive element is stored directly in the frame. This way can work on one conventional in the art additional Bearing plate for storing the drive element can be omitted. Thereby can not just one component and thus save production costs, but the belt retractor according to the invention is also characterized by particularly smaller dimensions in (with respect to the longitudinal axis the belt reel) axial direction.
Eine einfach realisierbare Ausgestaltung ergibt sich dadurch, daß der Rahmen eine kreisförmige Aussparung aufweist, in die ein zylindrischer Abschnitt des Antriebselements eingreift. Handelt es sich insbesondere bei dem Antriebselement um ein Hohlrad, dessen zylindrischer Abschnitt über seine gesamte Länge mit einer Verzahnung versehen ist, ergibt sich zudem eine große axiale Überdeckung der Verzahnungen des Antriebselements und des Ritzels bzw. eines zwischengeschalteten Zahnrads.A simply realizable design results from the fact that the frame a circular recess in which a cylindrical portion of the drive element engaging. Is it in particular the drive element around a ring gear, the cylindrical portion over its entire length with a toothing is provided, also results in a large axial overlap the teeth of the drive element and the pinion or a intermediate gear.
Um im Betrieb eine Axialverschiebung des Antriebselements zu begrenzen, weist das Antriebselement vorzugsweise wenigstens ein Abstützelement auf, mit dem es sich am Rand der Aussparung am Rahmen abstützt.Around to limit an axial displacement of the drive element in operation, the drive element preferably has at least one support element on, with which it is supported on the edge of the recess on the frame.
Insbesondere ist das Abstützelement als umlaufender Ring ausgebildet, der am Rahmen des Gurtaufrollers anliegt. Eine zufriedenstellende Abstützung läßt sich jedoch bereits dadurch erreichen, daß alternativ mehrere zur Abstützung dienende Fortsätze am Antriebselement vorgesehen sind.Especially is the support element designed as a circumferential ring on the frame of the belt retractor is applied. However, satisfactory support can already be achieved achieve that, alternatively several for support serving extensions are provided on the drive element.
Zum Zweck einer beidseitigen radialen und axialen Lagerung kann das Straffergehäuse auf der dem Rahmen gegenüberliegenden Seite eine Vertiefung aufweisen, in der das Antriebselement gelagert ist.To the Purpose of a two-sided radial and axial bearing can Straffergehäuse on the opposite side of the frame Side have a recess in which the drive element is mounted.
Gemäß einer bevorzugten Ausführungsform ist das Ritzel auf der dem Rahmen gegenüberliegenden Seite im Straffergehäuse gelagert. Somit läßt sich weiterer Bauraum einsparen, da auch das Ritzel keine zusätzliche Lagerplatte benötigt.According to one preferred embodiment the pinion mounted on the opposite side of the frame in Straffergehäuse. Thus, can be save further space, as well as the pinion no additional Bearing plate needed.
Eine besonders einfache Ausbildung des Lagers wird erzielt, wenn das Ritzel einen Lagerzapfen aufweist, der in eine Aussparung im Straffergehäuse eingreift. Der Lagerzapfen bietet zudem eine günstige Ankopplungsmöglichkeit einer Rückzugsfeder an die Achse des Gurtaufrollers.A Particularly simple training of the camp is achieved if the Pinion has a bearing pin which engages in a recess in the tensioner housing. The journal also offers a convenient coupling possibility a return spring to the axle of the belt retractor.
Das Antriebselement kann einen radial nach außen gerichteten Flügelansatz aufweisen, auf den die Antriebseinheit bei Aktivierung einwirkt und dadurch das Antriebselement in Bewegung versetzt.The Drive element may have a radially outwardly directed wing approach have on which the drive unit acts upon activation and thereby set the drive element in motion.
Vorzugsweise hat das Antriebselement eine Verzahnung, die mit der Verzahnung des Ritzels in direktem Eingriff ist oder gelangt. In diesem Fall sollte der Mittelpunkt der Kreisbahn, auf der sich das Antriebselement bewegt, gegenüber der Drehachse des Ritzels versetzt sein.Preferably the drive element has a toothing, which with the toothing of the pinion is in direct engagement or passes. In this case should be the center of the circular path on which the drive element moved, opposite be offset from the axis of rotation of the pinion.
Um ein besonders rasches Ansprechen des Gurtstraffers zu gewährleisten, umfaßt die Antriebseinheit vorteilhaft einen pyrotechnischen Antrieb. Alternativ könnte jedoch auch ein elektrischer oder mechanischer Antrieb zum Einsatz kommen.Around to ensure a particularly rapid response of the belt tensioner, comprises the drive unit advantageously a pyrotechnic drive. alternative could but also an electric or mechanical drive for use come.
Die Antriebseinheit weist bevorzugt ein Kraftübertragungselement auf, das kraftschlüssig mit dem Antriebselement gekoppelt ist und dieses bei Aktivierung der Antriebseinheit mit der Antriebskraft beaufschlagt. Alternativ ist es ebenso denkbar, daß das Antriebselement allein durch von einem pyrotechnischen Antrieb erzeugtes Druckgas beaufschlagt wird.The Drive unit preferably has a force transmission element, the force fit is coupled to the drive element and this when activated the drive unit is acted upon by the driving force. alternative it is also conceivable that the drive element solely by compressed gas generated by a pyrotechnic drive is charged.
Insbesondere handelt es sich bei dem Kraftübertragungselement um mehrere Kugeln, von denen eine direkt am Angriffselement angreift. Alternativ ist hier ein (gekrümmter oder biegsamer) Kolben denkbar.Especially it is the force transmission element by several balls, one of which attacks directly on the attack element. Alternatively, here is a (curved or more flexible) piston imaginable.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung einer bevorzugten Ausführungsform anhand der beigefügten Zeichnung. In dieser zeigt:Other features and advantages of the invention will become apparent from the following description of a preferred embodiment with reference to the joined drawing. In this shows:
Weiterhin
verfügt
der Gurtstraffer
Um
bei Aktivierung des Gurtstraffers
Auf
der dem Rahmen
Weiterhin
ist eine Antriebseinheit
Im
normalen Fahrbetrieb ist der Gurtstraffer
Neben
einer besonders geringen axialen Baulänge zeichnet sich der erfindungsgemäße Gurtaufroller
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610045198 DE102006045198A1 (en) | 2006-09-25 | 2006-09-25 | Belt retractor for seat belt system, has belt pretensioner provided with drive unit that is moved on circular path during activation of another drive unit and driving bevel, where former drive unit is directly supported in frame |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610045198 DE102006045198A1 (en) | 2006-09-25 | 2006-09-25 | Belt retractor for seat belt system, has belt pretensioner provided with drive unit that is moved on circular path during activation of another drive unit and driving bevel, where former drive unit is directly supported in frame |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006045198A1 true DE102006045198A1 (en) | 2008-04-03 |
Family
ID=39134107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200610045198 Withdrawn DE102006045198A1 (en) | 2006-09-25 | 2006-09-25 | Belt retractor for seat belt system, has belt pretensioner provided with drive unit that is moved on circular path during activation of another drive unit and driving bevel, where former drive unit is directly supported in frame |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102006045198A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8070085B2 (en) | 2008-09-04 | 2011-12-06 | Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho | Pretensioner |
EP2514642A1 (en) * | 2009-12-15 | 2012-10-24 | Takata Corp. | Seat belt retractor and seat belt device provided therewith |
JP5435823B2 (en) * | 2009-12-25 | 2014-03-05 | タカタ株式会社 | Pretensioner, seat belt retractor having the pre tensioner, and seat belt device having the same |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9405834U1 (en) * | 1994-04-11 | 1994-09-08 | Autoliv Development AB, Vårgårda | Rotary tensioner with partial piston |
DE4319273A1 (en) * | 1993-06-09 | 1994-12-15 | Trw Repa Gmbh | Belt retractors for vehicle seat belt systems |
DE20300429U1 (en) * | 2003-01-13 | 2003-05-28 | TRW Occupant Restraint Systems GmbH & Co. KG, 73553 Alfdorf | Belt tensioner drive for a seat belt retractor |
DE102005019603A1 (en) * | 2005-04-27 | 2006-11-02 | Trw Automotive Gmbh | Rotary drive for belt tensioner, has driving gear mounted in housing and driven by pressurized gas, and intermediate gear meshes both with ring gear and pinion, where pressure chamber is disposed in interior of ring gear |
-
2006
- 2006-09-25 DE DE200610045198 patent/DE102006045198A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4319273A1 (en) * | 1993-06-09 | 1994-12-15 | Trw Repa Gmbh | Belt retractors for vehicle seat belt systems |
DE9405834U1 (en) * | 1994-04-11 | 1994-09-08 | Autoliv Development AB, Vårgårda | Rotary tensioner with partial piston |
DE20300429U1 (en) * | 2003-01-13 | 2003-05-28 | TRW Occupant Restraint Systems GmbH & Co. KG, 73553 Alfdorf | Belt tensioner drive for a seat belt retractor |
DE102005019603A1 (en) * | 2005-04-27 | 2006-11-02 | Trw Automotive Gmbh | Rotary drive for belt tensioner, has driving gear mounted in housing and driven by pressurized gas, and intermediate gear meshes both with ring gear and pinion, where pressure chamber is disposed in interior of ring gear |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8070085B2 (en) | 2008-09-04 | 2011-12-06 | Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho | Pretensioner |
DE102009040064B4 (en) | 2008-09-04 | 2018-08-16 | Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho | pretensioner |
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 |
JP5435823B2 (en) * | 2009-12-25 | 2014-03-05 | タカタ株式会社 | Pretensioner, seat belt retractor having the pre tensioner, and seat belt device having the same |
US8720950B2 (en) | 2009-12-25 | 2014-05-13 | Takata Corporation | Pretensioner, seatbelt retractor including the pretensioner, and seatbelt apparatus including the seatbelt retractor |
EP2517934B1 (en) * | 2009-12-25 | 2017-02-08 | Takata Corporation | Pretensioner, seatbelt retractor including the pretensioner, and seatbelt apparatus including the seatbelt 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 |
Effective date: 20130926 |