DE102006002731B3 - Tensioning device for safety belt, has tensioning tube for receiving and guiding piston operated by compressed gas, where traction cable is connected to piston and to safety belt components, to be displaced during tensioning movement - Google Patents
Tensioning device for safety belt, has tensioning tube for receiving and guiding piston operated by compressed gas, where traction cable is connected to piston and to safety belt components, to be displaced during tensioning movement Download PDFInfo
- Publication number
- DE102006002731B3 DE102006002731B3 DE200610002731 DE102006002731A DE102006002731B3 DE 102006002731 B3 DE102006002731 B3 DE 102006002731B3 DE 200610002731 DE200610002731 DE 200610002731 DE 102006002731 A DE102006002731 A DE 102006002731A DE 102006002731 B3 DE102006002731 B3 DE 102006002731B3
- Authority
- DE
- Germany
- Prior art keywords
- seal
- piston
- tensioning
- compressed gas
- tensioning device
- 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.)
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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
- B60R22/18—Anchoring devices
- B60R22/195—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type
- B60R22/1952—Transmission of tensioning power by cable; Return motion locking means therefor
-
- 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
- B60R22/18—Anchoring devices
- B60R22/195—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type
- B60R22/1954—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type characterised by fluid actuators, e.g. pyrotechnic gas generators
- B60R22/1955—Linear actuators
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
Description
Die Erfindung betrifft eine Straffvorrichtung für einen Sicherheitsgurt mit einem Strafferrohr zur Aufnahme und Führung eines druckgasgetriebenen Kolbens und mit einem an dem Kolben angeschlossenen und mit einer in eine Straffbewegung zu versetzenden Sicherheitsgurtkomponente verbundenen Zugseil.The The invention relates to a tensioning device for a safety belt a tensioner tube for receiving and guiding a pressure gas piston and with one connected to the piston and one in one Tensioning harness to be offset seat belt component associated towing rope.
Eine
Straffvorrichtung mit den vorgenannten Merkmalen ist in der
Aus
der
Der Erfindung liegt daher die Aufgabe zugrunde, den Wirkungsgrad einer derartigen Straffvorrichtung zu verbessern.Of the The invention is therefore based on the object, the efficiency of a to improve such tensioning device.
Die Lösung dieser Aufgabe ergibt sich aus dem Anspruch 1; vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.The solution This object is apparent from the claim 1; advantageous embodiments and further developments of the invention are specified in the subclaims.
Die Erfindung sieht hierzu eine Straffvorrichtung vor, bei welcher zur verbesserten Abdichtung des Druckraumes gegenüber dem durch eine in einer den Druckraum gegenüber der Druckgasquelle abteilenden Zwischenwand ausgebildete Durchtrittsöffnung in den Druckraum hineingeführten Zugseil die auf dem Zugseil befindliche Dichtung eine wenigstens an ihrem in Bewegungsrichtung hinteren Ende konische Gestalt aufweist und die Dichtung in ihrem in Bewegungsrichtung vorderen Ende vor Auslösung der Straffvorrichtung in der Durchtrittsöffnung liegt und diese gemeinsam mit dem Zugseil abdichtet und die Abmessung des hinteren Endes der Dichtung größer als die Durchtrittsöffnung bemessen ist.The For this purpose, the invention provides a tensioning device in which the improved sealing of the pressure chamber over the one in a Pressure chamber opposite the pressure gas source dividing partition wall formed passage opening in led in the pressure chamber Traction cable located on the pull cable seal at least Having conical shape at its rear end in the direction of movement and the gasket in its forward direction in the direction of movement Triggering the Straffvorrichtung lies in the passage opening and this together seals with the pull rope and the dimension of the rear end of the Seal larger than the passage opening is measured.
Mit der Erfindung ist der Vorteil verbunden, dass aufgrund der Anordnung einer auf dem Zugseil befindlichen und sich über einen Längenabschnitt des Zugseils axial erstreckenden Dichtung, die gegen die Durchtrittsöffnung für das Zugseil wirkt, das freigesetzte Druckgas zunächst nicht entlang des Seils durch dessen Seildurchführung austreten kann. Soweit erfindungsgemäß die dazu verwendete Dichtung eine in ihrem in Bewegungsrichtung hinteren Ende konische Gestalt aufweist, ist damit gleichzeitig der Vorteil verbunden, dass zum Ende der Straffbewegung hin eine Kraftbegrenzungswirkung eintritt, weil die Bewegung des Seils durch die Durchtrittsöffnung abgebremst wird. Soweit bei modernen Kraftfahrzeugen immer höhere Straffleistungen gefordert werden, wird hiermit in vorteilhafter Weise erreicht, dass eine definierte Abbremsung des Strafferantriebes gegeben ist.With The invention has the advantage that due to the arrangement one located on the pull rope and over a length of the pull rope axially extending seal against the passage opening for the pull rope acts, the released pressurized gas initially not along the rope through its rope feedthrough can escape. As far as according to the invention, the seal used for this purpose a conical shape in its rear end in the direction of movement has, at the same time has the advantage that the At the end of the tightening movement, a force limiting effect occurs because the movement of the rope through the passage opening is slowed down. So far with modern motor vehicles, higher and higher punctuality demands is hereby achieved in an advantageous manner that a defined Deceleration of the tensioner drive is given.
In einer ersten Ausführungsform der Erfindung ist vorgesehen, dass die Dichtung sich von dem Bereich der Durchtrittsöffnung über eine mindestens dem Straffweg des Kolbens entsprechende Länge längs des Zugseils erstreckt, wobei vorgesehen sein kann, dass die axiale Länge der Dichtung größer als der Straffweg des Kolbens ist.In a first embodiment The invention provides that the seal is from the area the passage opening over a at least the Straffweg of the piston corresponding length along the Zugseils extends, it can be provided that the axial Length of Gasket bigger than that Straffweg of the piston is.
Hierbei kann hinsichtlich der Ausbildung der Dichtung vorgesehen sein, dass die Dichtung einen an ihrem vorderen Ende beginnenden Abschnitt mit einer zylindrischen Gestalt gleichbleibenden Durchmessers aufweist, der zum hinteren Ende der Dichtung in die konische Gestalt übergeht. Hierbei kann weiterhin vorgesehen sein, dass die Konizität der Dichtung sich von deren vorderen Ende bis zu deren hinteren Ende erstreckt. In alternativen Ausführungsformen der Erfindung kann hinsichtlich der Ausbildung der Konizität vorgesehen sein, dass die Konizität der Dichtung linear ansteigend ausgebildet ist, oder dass die Konizität der Dichtung zum hinteren Ende der Dichtung progressiv ansteigend ausgebildet ist.in this connection may be provided in terms of the formation of the seal, that the seal has a section beginning at its front end having a cylindrical shape of constant diameter, which merges with the rear end of the gasket into the conical shape. It can further be provided that the taper of the seal extends from the front end to the rear end. In alternative embodiments The invention can be provided with regard to the formation of the taper be that conicity the seal is linearly rising, or that the taper of the seal formed progressively rising to the rear end of the seal is.
Hinsichtlich der Anordnung des Druckraumes in dem Strafferrohr ist nach einem ersten Ausführungsbeispiel der Erfindung vorgesehen, dass der Druckraum auf seiner der Druckgasquelle zugewandten Seite durch eine eine Durchströmöffnung für das Druckgas sowie die Durchtrittsöffnung für das Zugseil aufweisende Zwischenwand begrenzt ist, wobei vorgesehen sein kann, dass die Zwischenwand Bestandteil eines in das Strafferrohr eingesetzten, einen Gasgenerator aufnehmenden Gasgeneratorgehäuses ist. Bei einer derart eingerichteten axialen Zuordnung von Kolben und Gasgeneratorgehäuse kann vorgesehen sein, dass das Strafferrohr in seinem das Gasgeneratorgehäuse aufnehmenden Abschnitt eine Querschnittser-weiterung aufweist.With regard to the arrangement of the pressure chamber in the tensioner tube is provided according to a first embodiment of the invention that the Pressure chamber is limited on its side facing the compressed gas source by a through-flow opening for the compressed gas and the passage opening for the pull rope having intermediate wall, it being possible to provide that the intermediate wall is part of a used in the tensioner tube, a gas generator receiving gas generator housing. In such an axial arrangement of the piston and the gas generator housing, it can be provided that the tensioner tube has a cross-sectional enlargement in its section accommodating the gas generator housing.
In
einer alternativen Zuordnung des Gasgeneratorgehäuses zum Strafferrohr kann
vorgesehen sein, dass an einen auf der Seite der Druckgasquelle an
die Zwischenwand anschließenden
Abschnitt des Strafferrohres ein winklig zum Strafferrohr angesetztes
Gasgeneratorgehäuse
mit einem darin angeordneten Gasgenerator angeschlossen ist, wie
dies im Grundsatz aus der
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung wiedergegeben, welches nachstehend beschrieben ist. Es zeigen:In the drawing is an embodiment of Invention, which is described below. It demonstrate:
Bei
dem in der Zeichnung dargestellten Ausführungsbeispiel ist die Straffvorrichtung
Das
Zugseil
Weiterhin
trägt die
Zwischenwand
Um
auch in diesem Stadium des Kolbenweges eine Abdichtung der Seildurchführung
Wie
sich aus
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610002731 DE102006002731B3 (en) | 2006-01-20 | 2006-01-20 | Tensioning device for safety belt, has tensioning tube for receiving and guiding piston operated by compressed gas, where traction cable is connected to piston and to safety belt components, to be displaced during tensioning movement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610002731 DE102006002731B3 (en) | 2006-01-20 | 2006-01-20 | Tensioning device for safety belt, has tensioning tube for receiving and guiding piston operated by compressed gas, where traction cable is connected to piston and to safety belt components, to be displaced during tensioning movement |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006002731B3 true DE102006002731B3 (en) | 2007-07-05 |
Family
ID=38136049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200610002731 Active DE102006002731B3 (en) | 2006-01-20 | 2006-01-20 | Tensioning device for safety belt, has tensioning tube for receiving and guiding piston operated by compressed gas, where traction cable is connected to piston and to safety belt components, to be displaced during tensioning movement |
Country Status (1)
Country | Link |
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DE (1) | DE102006002731B3 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007046726B3 (en) * | 2007-09-28 | 2009-02-12 | Autoliv Development Ab | Tensioning device for safety belt, has close fitting sealing collar is arranged opposite to inner wall of tensioning tube into pressure chamber projecting sealing lug and sealing rim arranged in one-piece formation at collar |
DE102007046715B3 (en) * | 2007-09-28 | 2009-02-12 | Autoliv Development Ab | Tightening device i.e. buckle tightener, for safety belt, has sealing provided for sealing pressure chamber against cable that is guided through opening, which is formed in intermediate wall that separates chamber against gas source |
DE102021211862A1 (en) | 2021-10-21 | 2023-04-27 | Joyson Safety Systems Germany Gmbh | Belt tensioners for a vehicle |
WO2024194334A1 (en) * | 2023-03-20 | 2024-09-26 | Autoliv Development Ab | Tensioning device for a safety belt component |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29708880U1 (en) * | 1997-05-20 | 1997-09-18 | TRW Occupant Restraint Systems GmbH, 73553 Alfdorf | Belt tensioners for a vehicle occupant restraint system |
DE19918596A1 (en) * | 1998-05-08 | 1999-11-18 | Breed Automotive Tech | Seat belt pretensioner system for use in a motor vehicle |
-
2006
- 2006-01-20 DE DE200610002731 patent/DE102006002731B3/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29708880U1 (en) * | 1997-05-20 | 1997-09-18 | TRW Occupant Restraint Systems GmbH, 73553 Alfdorf | Belt tensioners for a vehicle occupant restraint system |
EP0879741B1 (en) * | 1997-05-20 | 2002-01-16 | TRW Occupant Restraint Systems GmbH & Co. KG | Belt tightener for a vehicle occupant restraint system |
DE19918596A1 (en) * | 1998-05-08 | 1999-11-18 | Breed Automotive Tech | Seat belt pretensioner system for use in a motor vehicle |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007046726B3 (en) * | 2007-09-28 | 2009-02-12 | Autoliv Development Ab | Tensioning device for safety belt, has close fitting sealing collar is arranged opposite to inner wall of tensioning tube into pressure chamber projecting sealing lug and sealing rim arranged in one-piece formation at collar |
DE102007046715B3 (en) * | 2007-09-28 | 2009-02-12 | Autoliv Development Ab | Tightening device i.e. buckle tightener, for safety belt, has sealing provided for sealing pressure chamber against cable that is guided through opening, which is formed in intermediate wall that separates chamber against gas source |
DE102021211862A1 (en) | 2021-10-21 | 2023-04-27 | Joyson Safety Systems Germany Gmbh | Belt tensioners for a vehicle |
DE102021211862B4 (en) | 2021-10-21 | 2024-09-12 | Joyson Safety Systems Germany Gmbh | Belt tensioner for a vehicle |
WO2024194334A1 (en) * | 2023-03-20 | 2024-09-26 | Autoliv Development Ab | Tensioning device for a safety belt component |
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8100 | Publication of the examined application without publication of unexamined application | ||
8364 | No opposition during term of opposition |