DE102004057095B3 - Seat belt tightening unit, comprising mass elements moving through pipe sections with predetermined breaking area - Google Patents
Seat belt tightening unit, comprising mass elements moving through pipe sections with predetermined breaking area Download PDFInfo
- Publication number
- DE102004057095B3 DE102004057095B3 DE200410057095 DE102004057095A DE102004057095B3 DE 102004057095 B3 DE102004057095 B3 DE 102004057095B3 DE 200410057095 DE200410057095 DE 200410057095 DE 102004057095 A DE102004057095 A DE 102004057095A DE 102004057095 B3 DE102004057095 B3 DE 102004057095B3
- Authority
- DE
- Germany
- Prior art keywords
- pipe section
- drive wheel
- pipe
- predetermined breaking
- mass elements
- 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
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
Abstract
Description
Die Erfindung betrifft einen Gurtstraffer nach dem Oberbegriff des Anspruchs 1.The The invention relates to a belt tensioner according to the preamble of the claim 1.
Ein modernes Gurtsystem in einem Kraftfahrzeug umfasst neben dem Gurtband, das über eine Gurtzunge mit einem Gurtschloss verbunden werden kann, auch einen Gurtstraffer und einen Gurtkraftbegrenzer. Die beiden letztgenannten Einrichtungen können Bestandteile der Gurtaufrollereinheit sein.One modern belt system in a motor vehicle includes next to the webbing, that about one Belt tongue can be connected with a buckle, even one Belt tensioner and a belt force limiter. The latter two Facilities can Be part of the belt retractor unit.
Zu Beginn des Rückhaltevorgangs wird der Gurtstraffer betätigt. Wenn dann der Insasse in das Gurtband hineinfällt, setzt die Wirkung des Gurtkraftbegrenzers ein, um eine zu starke Belastung des Insassen durch das Gurtband zu verhindern. Damit die Gurtkraftbegrenzung nicht behindert wird, sollte der Straffvorgang abgeschlossen sein, wenn der Gurtkraftbegrenzungs-Vorgang einsetzt. Zu diesem Zeitpunkt sollte möglichst keine Kraft mehr vom Gurtstraffer auf das Gurtband, beispielsweise über die Gurttrommel, übertragen werden.To Beginning of the restraint process the belt tensioner is actuated. If then the occupant falls into the webbing, the effect of the Gurtkraftbegrenzers, in order to overload the occupant by preventing the webbing. So that the belt force limit is not impeded, should the tightening process be completed, when the belt force limiting operation starts. At this time should be possible no more power from the belt tensioner on the webbing, for example, on the belt drum transferred become.
Aus
der gattungsbildenden
Aus
der
Die Erfindung stellt sich zur Aufgabe, einen gattungsgemäßen Gurtstraffer dahingehend weiterzubilden, dass nach Beendigung des Straffvorgangs innerhalb sehr kurzer Zeit keine Kraft mehr auf die Gurttrommel übertragen wird.The Invention has for its object, a generic belt tensioner in such a way that after completion of the tightening process within transfered no more power to the belt drum in a very short time becomes.
Diese Aufgabe wird durch einen Gurtstraffer mit den Merkmalen des Anspruchs 1 gelöst.These Task is achieved by a belt tensioner with the features of the claim 1 solved.
Erfindungsgemäß ist das Rohr, in dem die das Antriebsrad antreibenden Massekörper angeordnet sind, derart ausgestaltet, dass der hinter dem Antriebsrad liegende zweite Rohrabschnitt an der Wandung des ersten Rohrabschnittes endet und diese dort eine als Ventil dienende Sollbruchstelle aufweist. Bricht die Sollbruchstelle, so erfolgt ein unmittelbarer Druckausgleich zwischen erstem und zweitem Rohrabschnitt, so dass in sehr kurzer Zeit auf beiden Seiten des Antriebsrades gleiche Druckverhältnisse herrschen und somit in ebenso kurzer Zeit das Antriebsrad keine Kraft mehr auf das Gurtband übertragen kann.This is according to the invention Pipe in which arranged the drive wheel driving mass body are configured such that the lying behind the drive wheel second pipe section on the wall of the first pipe section ends and this has there serving as a valve predetermined breaking point. breaks the predetermined breaking point, there is an immediate pressure compensation between first and second pipe section, so in a very short time Time on both sides of the drive wheel equal pressure conditions prevail and thus in a short time the drive wheel no more power transferred to the webbing can.
In einer bevorzugten Ausgestaltung nach Anspruch 2 dient der vorderste Massekörper dazu, die Sollbruchstelle zu brechen. Hierdurch lässt sich mit einfachen Mitteln der Zeitpunkt, zu welchem der Druckausgleich und somit die Beendigung des Straffvorgangs erfolgen soll, mit hoher Genauigkeit festlegen.In A preferred embodiment according to claim 2 is the foremost mass body to break the breaking point. This can be with simple means the time at which the pressure equalization and Thus, the termination of the tightening process should take place, with high Set accuracy.
In einer weiter bevorzugten Ausführungsform nach Anspruch 3 ist der vorderste Massekörper so ausgebildet, dass er das Antriebsrad auch dann passieren kann, wenn dieses beispielsweise durch eine starke Zugbelastung im Gurtband blockiert ist. Hierdurch kann verhindert werden, dass ausgerechnet dann die Gurtkraftbegrenzung behindert wird, wenn sie am notwendigsten ist, nämlich dann, wenn bereits eine hohe Kraft im Gurtband auftritt.In a further preferred embodiment According to claim 3, the foremost mass body is formed so that he The drive wheel can happen even if this example is blocked by a strong tensile stress in the webbing. hereby can be prevented that just then the belt force limit is hampered when it is most needed, that is, when already one high force in the webbing occurs.
Die Erfindung wird nun anhand eines Ausführungsbeispiels mit Bezug auf die Figuren näher erläutert. Hierbei zeigen:The Invention will now be described with reference to an embodiment with reference to the figures explained in more detail. in this connection demonstrate:
Am
Ende des ersten Rohrabschnitts
Wie
man beispielsweise anhand
Wie
man beispielsweise anhand der
Wie
man anhand der Figuren sieht, unterscheidet sich der erste Massekörper
- 1010
- Antriebsraddrive wheel
- 1212
- Rohrpipe
- 12a12a
- erster Rohrabschnittfirst pipe section
- 12b12b
- zweiter Rohrabschnittsecond pipe section
- 1414
- Wandungwall
- 1515
- SollbruchstelleBreaking point
- 1616
- Massekörpermass body
- 16a16a
- erster Massekörperfirst mass body
- 16b16b
- weitere MassekörperFurther mass body
- 1717
- Dornmandrel
- 2020
- Gasgeneratorinflator
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410057095 DE102004057095B3 (en) | 2004-11-26 | 2004-11-26 | Seat belt tightening unit, comprising mass elements moving through pipe sections with predetermined breaking area |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410057095 DE102004057095B3 (en) | 2004-11-26 | 2004-11-26 | Seat belt tightening unit, comprising mass elements moving through pipe sections with predetermined breaking area |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004057095B3 true DE102004057095B3 (en) | 2006-01-19 |
Family
ID=35508255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410057095 Expired - Fee Related DE102004057095B3 (en) | 2004-11-26 | 2004-11-26 | Seat belt tightening unit, comprising mass elements moving through pipe sections with predetermined breaking area |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102004057095B3 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006032492A1 (en) * | 2006-07-13 | 2008-01-17 | Siemens Ag | Safety belt tightening unit for use in belt system of motor vehicle, has belt lock movably supported in tightening direction, and drive unit for tightening belt strap standing in effective connection with belt lock for moving buckle |
DE102007003497A1 (en) | 2007-01-24 | 2008-07-31 | Siemens Ag | retractor |
DE102008029503A1 (en) * | 2008-06-19 | 2010-04-29 | Takata-Petri Ag | Belt retractor for seat belt, has heavier thrust body provided along longitudinal direction of guide tube and in direction of drive device, where heavier thrust body is present before lighter thrust body |
WO2019026426A1 (en) * | 2017-08-03 | 2019-02-07 | 株式会社東海理化電機製作所 | Webbing winding device |
WO2021085299A1 (en) * | 2019-11-01 | 2021-05-06 | 株式会社東海理化電機製作所 | Webbing winding device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19512660C2 (en) * | 1994-04-11 | 1999-11-18 | Autoliv Dev | Pyrotechnic rotary tensioner with mass body drive |
-
2004
- 2004-11-26 DE DE200410057095 patent/DE102004057095B3/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19512660C2 (en) * | 1994-04-11 | 1999-11-18 | Autoliv Dev | Pyrotechnic rotary tensioner with mass body drive |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006032492A1 (en) * | 2006-07-13 | 2008-01-17 | Siemens Ag | Safety belt tightening unit for use in belt system of motor vehicle, has belt lock movably supported in tightening direction, and drive unit for tightening belt strap standing in effective connection with belt lock for moving buckle |
DE102007003497A1 (en) | 2007-01-24 | 2008-07-31 | Siemens Ag | retractor |
DE102008029503A1 (en) * | 2008-06-19 | 2010-04-29 | Takata-Petri Ag | Belt retractor for seat belt, has heavier thrust body provided along longitudinal direction of guide tube and in direction of drive device, where heavier thrust body is present before lighter thrust body |
DE102008029503B4 (en) * | 2008-06-19 | 2015-05-13 | TAKATA Aktiengesellschaft | Belt retractor with tensioner drive |
WO2019026426A1 (en) * | 2017-08-03 | 2019-02-07 | 株式会社東海理化電機製作所 | Webbing winding device |
JPWO2019026426A1 (en) * | 2017-08-03 | 2020-07-27 | 株式会社東海理化電機製作所 | Webbing take-up device |
JP6998960B2 (en) | 2017-08-03 | 2022-01-18 | 株式会社東海理化電機製作所 | Webbing winder |
WO2021085299A1 (en) * | 2019-11-01 | 2021-05-06 | 株式会社東海理化電機製作所 | Webbing winding device |
JP2021070461A (en) * | 2019-11-01 | 2021-05-06 | 株式会社東海理化電機製作所 | Webbing take-up device |
JP7206567B2 (en) | 2019-11-01 | 2023-01-18 | 株式会社東海理化電機製作所 | Webbing take-up device |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of the examined application without publication of unexamined application | ||
8364 | No opposition during term of opposition | ||
R082 | Change of representative |
Representative=s name: SCHOEN, THILO, DIPL.-PHYS., DE |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |