WO2010003536A1 - Prétensionneur de ceinture de sécurité - Google Patents

Prétensionneur de ceinture de sécurité Download PDF

Info

Publication number
WO2010003536A1
WO2010003536A1 PCT/EP2009/004423 EP2009004423W WO2010003536A1 WO 2010003536 A1 WO2010003536 A1 WO 2010003536A1 EP 2009004423 W EP2009004423 W EP 2009004423W WO 2010003536 A1 WO2010003536 A1 WO 2010003536A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide
gas generator
ignition cable
container
cylinder
Prior art date
Application number
PCT/EP2009/004423
Other languages
German (de)
English (en)
Inventor
André LITTMANN
Original Assignee
Autoliv Development Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Autoliv Development Ab filed Critical Autoliv Development Ab
Publication of WO2010003536A1 publication Critical patent/WO2010003536A1/fr

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
    • B60R22/18—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

Definitions

  • the invention relates to a belt tensioner with the features of the preamble of claim 1.
  • Belt tensioners of the generic type are used for tightening safety belts in motor vehicles and engage via a tension element either on the end fitting, on the buckle or on the belt retractor of the seat belt.
  • the tightening of the seat belt pulls any belt slack still present out of the seat belt system, so that the occupant is coupled to the vehicle deceleration as early as possible during a subsequent forward shift and thereby the maximum occupant load is reduced.
  • Cylinder is fastened, so that the ignition cable is relieved in the area of the connection to the gas generator train.
  • a disadvantage of this solution is that the separate strain relief is expensive, an additional step in the production of the belt tensioner means and finally there is a risk that it is forgotten or incorrectly executed.
  • the object of the invention is to provide a belt tensioner with a low-cost strain relief for the connection between the ignition cable and gas generator.
  • the invention proposes that a guide is provided, on which the ignition cable is deflected after exiting the cylinder at a distance.
  • the tensile force is at least partially passed into the guide when pulling on the ignition cable, so that the ultimately acting on the connection to the gas generator tensile force is at least substantially reduced.
  • the guide is at least partially formed by a U-shaped channel, so that the ignition cable is also guided laterally starting from the gas generator.
  • the guide can be realized particularly inexpensively by providing a container with a gas generator receptacle, and the guide is arranged on the container.
  • the container can be injected inexpensively as a plastic part, the guide can be injected with the same.
  • the guide is arranged, starting from the center axis of the container, on the side of the container at which the ignition cable comes out of the belt tensioner. is executed. As a result, the ignition cable automatically engages the guide during assembly of the gas generator and the lead out of the belt tensioner.
  • the container is formed at least in two parts, so that the gas generator can be first inserted into a part of the container, and the gas generator recording and the guide is then completed or completed by assembly with the remaining part.
  • the guide itself can be designed independently of how the gas generator is introduced in addition to the ignition cable in the gas generator recording, or it can also be designed so that it blocks access to the gas generator recording after assembly of the parts of the container and the gas generator ge additionally - slipping out secures.
  • the container in the assembled state of the parts has a passage opening for the tension element, and the container in a plane formed by the center axes of the through hole and the gas generator receptacle is divisible, so that both the tension element and the gas generator laterally in the one Part of the container with the half-shell-shaped fürgangs ⁇ réelle and gas generator recording can be inserted, and then the container with the gas generator receiving and the passage opening is completed by adding the second part.
  • the gas generator receiving on the side of the outgoing ignition cable has an abutment against which the gas generator and thereby can not be pulled out by pulling on the ignition cable from the gas generator recording.
  • the guidance of the ignition cable can be further improved by a deflection block is arranged on the side of the cylinder from which the ignition cable emerges, and the deflection block with the guide forms a guide channel for the ignition cable.
  • the Umlenkblock has the real task to redirect the tension element in a predetermined direction of extent, since the longitudinal direction of the piston-cylinder unit usually does not match for structural reasons with the force application direction of the belt tensioner.
  • the Umlenkblock takes an additional function, namely the leadership of the ignition cable, true.
  • the strain relief can be further improved by the deflection block has a clamping surface opposite the guide, and the ignition cable between the deflection block and the guide is clamp-like fixable.
  • Fig.l Container with gas generator
  • Fig.2 Belt tensioner with container and lead out ignition cable
  • Fig.3 Container with gas generator in view X-X
  • FIG. 1 shows a container 1 for a belt tensioner which has a gas generator receptacle 13 above its center axis A and a guide section 7 below the center axis A with a tubular extension 10 for a tension element 2 to be arranged therein.
  • a gas generator 4 is arranged, which is connected to an ignition cable 3.
  • the ignition cable originating from the gas generator 4 at 3 is deflected at a distance from the gas generator receptacle 13 on a guide 9.
  • the guide 9 is formed as projecting in the direction of the center axis A of the container 1 guide finger and additionally has lateral effetsrip- pen 16, which give a U in cross-section to the center axis A out. By thus formed guide 9, the ignition cable 3 is additionally secured against lateral slipping out of the guide 9.
  • the belt tensioner is designed as a linear tensioner and is connected via a tension element 2 with a seat belt, not shown, e.g. connected via a buckle, an end fitting or a belt shaft.
  • the belt tensioner itself comprises a deflection block 5, in which the tension element 2 is deflected in a predetermined extension direction and over which the belt tensioner is fastened to a vehicle. Adjacent to the deflection block 5, a cylinder 11 is arranged, in which the tension element 2 extends with a piston, not shown, arranged at its end.
  • the tension element 2 and the gas generator 4 are held in the container 1, wherein the guide portion 7 is formed for the tension element 2 by a through hole 14 in which the tension element 2 is guided as possible gas-tight.
  • the gas generator 4 is arranged in a gas generator receptacle 13, which is bounded on its the deflecting block 5 side facing by an abutment 12.
  • the gas generator 4 is connected to the deflection block 5 side facing with an ignition cable 3, which via a Füh- tion 9 led out of the cylinder 11.
  • the guide 9 is recognizably arranged between the center axis A, preferably also between the center axis B of the gas generator 4, and the lead-out ignition cable 3.
  • the guide 9 is additionally provided with lateral boundary ribs 16 which, in cross-section, form a U which is open in the direction of the tension element 2 and serve the lateral guidance of the ignition cable 3.
  • the height of the boundary ribs 16 decreases with increasing distance from the container 1, so that there is a triangular geometry in side view.
  • the guide 9 protrudes into a free space of the Umlenkblockes 5, which forms a guide channel for the ignition cable through a guide 9 9 opposite section. If pulling is made on the ignition cable 3 in the arrangement shown in FIG. 2, the tensile force due to the deflection of the ignition cable 3 into the guide rail is reduced.
  • the ignition cable 3 can also be deflected several times, whereby the strain relief is further improved.
  • the limiting ribs 16 have the additional effect of stiffening
  • a clamping surface 15 is provided on the shoulder 8, via which the ignition cable 3 between the guide 9 and the paragraph 8 are determined by clamping
  • the container 1 can be seen with the outgoing ignition cable 3 from Fig.l in view XX.
  • Container 1 is long of the plane D formed by the parallel center axes B and C divisible. In the divided state of the container 1, this results in a half in half shells split gas generator receptacle 13 and passage opening 14.
  • the gas generator 4 and the tension element 2 are then first inserted into the open half-shells of a part of the container 1. Subsequently, the second part of the container 1 is supplemented, so that the closed passage opening 14 and gas generator receptacle 13 results.
  • the final geometry and arrangement of the guide 9 can be characterized only after the

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automotive Seat Belt Assembly (AREA)

Abstract

L’invention concerne un prétensionneur de ceinture de sécurité pour une ceinture de sécurité d’un véhicule automobile. Ledit prétensionneur comprend un élément de traction (2), relié par son extrémité à un piston guidé dans un cylindre (11), ledit piston pouvant être soumis à une pression par un générateur de gaz (4) agencé dans le cylindre (11). Le générateur de gaz (4) est relié à un câble d’allumage (3) sorti du cylindre (11), un guidage (9) étant prévu pour dévier sur une certaine distance le câble d’allumage (3) une fois sorti du cylindre (11).
PCT/EP2009/004423 2008-07-09 2009-06-19 Prétensionneur de ceinture de sécurité WO2010003536A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810032193 DE102008032193B4 (de) 2008-07-09 2008-07-09 Gurtstraffer
DE102008032193.1 2008-07-09

Publications (1)

Publication Number Publication Date
WO2010003536A1 true WO2010003536A1 (fr) 2010-01-14

Family

ID=40943690

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/004423 WO2010003536A1 (fr) 2008-07-09 2009-06-19 Prétensionneur de ceinture de sécurité

Country Status (2)

Country Link
DE (1) DE102008032193B4 (fr)
WO (1) WO2010003536A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9268742B2 (en) 2012-06-05 2016-02-23 Intel Corporation Reconfigurable variable length fir filters for optimizing performance of digital repeater
US9707927B1 (en) 2016-03-03 2017-07-18 Autoliv Asp, Inc. Seatbelt buckle apparatuses including switch wire harnesses and strain relief thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19609908A1 (de) * 1996-03-14 1997-09-18 Dynamit Nobel Ag Gasgenerator, insbesondere für Gurtstraffer
GB2313037A (en) * 1996-05-16 1997-11-19 Alliedsignal Ltd Gas generator housing for a safety belt pretensioner
US20030094805A1 (en) * 2001-11-19 2003-05-22 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Pretensioner device and seat belt device
EP1708328A2 (fr) * 2005-03-29 2006-10-04 Yazaki Corporation Protection
EP1857326A1 (fr) * 2006-05-16 2007-11-21 Takata Corporation Allumeur, gonfleur et appareil d'airbag
EP1935707A2 (fr) * 2006-12-19 2008-06-25 Yazaki Corporation Appareil d'alimentation électrique et structure de câblage par faisceaux l'utilisant

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999058377A1 (fr) * 1998-05-08 1999-11-18 Breed Automotive Technology, Inc. Dispositif de pretension
DE29822622U1 (de) * 1998-12-18 1999-02-18 E. Dittrich KG "Schlüssel"-Erzeugnisse, 28307 Bremen Gurtstraffer
DE10319714B4 (de) * 2003-05-02 2006-07-13 Autoliv Development Ab Gurtstraffer an einem Kraftfahrzeug

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19609908A1 (de) * 1996-03-14 1997-09-18 Dynamit Nobel Ag Gasgenerator, insbesondere für Gurtstraffer
GB2313037A (en) * 1996-05-16 1997-11-19 Alliedsignal Ltd Gas generator housing for a safety belt pretensioner
US20030094805A1 (en) * 2001-11-19 2003-05-22 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Pretensioner device and seat belt device
EP1708328A2 (fr) * 2005-03-29 2006-10-04 Yazaki Corporation Protection
EP1857326A1 (fr) * 2006-05-16 2007-11-21 Takata Corporation Allumeur, gonfleur et appareil d'airbag
EP1935707A2 (fr) * 2006-12-19 2008-06-25 Yazaki Corporation Appareil d'alimentation électrique et structure de câblage par faisceaux l'utilisant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9268742B2 (en) 2012-06-05 2016-02-23 Intel Corporation Reconfigurable variable length fir filters for optimizing performance of digital repeater
US9707927B1 (en) 2016-03-03 2017-07-18 Autoliv Asp, Inc. Seatbelt buckle apparatuses including switch wire harnesses and strain relief thereof

Also Published As

Publication number Publication date
DE102008032193B4 (de) 2011-05-26
DE102008032193A1 (de) 2010-01-21

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