WO2014076029A1 - Dispositif tendeur pyrotechnique à unité d'étanchéité d'un montage facile - Google Patents

Dispositif tendeur pyrotechnique à unité d'étanchéité d'un montage facile Download PDF

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Publication number
WO2014076029A1
WO2014076029A1 PCT/EP2013/073481 EP2013073481W WO2014076029A1 WO 2014076029 A1 WO2014076029 A1 WO 2014076029A1 EP 2013073481 W EP2013073481 W EP 2013073481W WO 2014076029 A1 WO2014076029 A1 WO 2014076029A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure chamber
seal
seal carrier
deflection
umlenkblocks
Prior art date
Application number
PCT/EP2013/073481
Other languages
German (de)
English (en)
Inventor
André LITTMANN
Arndt SÖHNCHEN
Jens Ehlers
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 WO2014076029A1 publication Critical patent/WO2014076029A1/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
    • B60R22/1955—Linear actuators

Definitions

  • the invention relates to a tensioning device for a safety belt with a tensioner tube for receiving and guiding a piston driven by compressed gas and with a tension cable connected to a piston connected to the piston and connected to a tensioning tube connected to the tightening tube, wherein in the Umlenkblock a connected to a mounted on the Umlenkblock gas generator pressure chamber becamebi endured and to seal the pressure chamber against the deflection of a block formed in the Umlenkblock deflection entering the pressure chamber and through the pressure chamber duri Fende pull rope on steering end since the end of the pressure chamber, the rope full area ig enclosing seal arranged and against a Axi alverschi exercise in the pressure chamber is festgel egt.
  • a tensioning device with the aforementioned features is known from EP 2 082 926 B1.
  • the known tensioning device consists of a deflection block for enclosing one of the safety belt components to be tightened.
  • tc for example, a seatbelt buckle, tensioning cable guided to the tensioning device and a tensioner tube inserted with its front end into an associated receiving opening of the Umlenkblocks with a guided therein, connected to the pull cable piston.
  • a pressure chamber is formed, to which a gas generator is connected, so that the pressure gas released from the gas generator in the lying in alignment with the tensioner pressure comb he enters and acts on the stationary end of the tensioner tube piston.
  • a seal is formed for sealing the pressure chamber against the tension cable entering it or against the cable guide.
  • the conical shape with the constriction directed to Seiluml restriction having seal is inserted into a recess formed in the Umlenkblock and medium s of a with the pressure chamber enclosing wall hooked Zackenringes set so that the Di rectness when inserting the Switzerlandsei les of the cable guide in the
  • Pressure chamber is not pushed out of the si receiving recess.
  • the disadvantage is that the assembly of the seal as well as of the serrated serrated ring in the deepest of the pressure chamber accessible from the open side of the circulating block is cumbersome and difficult to accomplish.
  • the compliance of a concentricity of seal and serrated ring is to assure ungei ngt, since even a small deviation in the concentricity of the components can lead to uneven deformation of the serrated ring.
  • the inner contour of the serrated ring can change such that the rope assembly either difficult due to a consequent greater friction when performing the pull rope or not even possible, because the inner diameter of the serrated ring is smaller than the rope diameter.
  • the invention is therefore an object of the invention to improve in a tensioning device with the generic features di e mounting the required in the pressure chamber seal.
  • the invention provides in its basic idea that the di seal is part of a tubular seal carrier used in the pressure chamber, which extends through the pressure chamber and on its order catch has at least one passage opening for zoomed up by the gas generator compressed gas and facing away from the cable deflection End is festgel egt by means of a form-locking design on the Umlenkblock or the associated tension pipe.
  • the seal is part of a tube to be used in the pressure chamber, the assembly of the seal in the lowest of the pressure chamber by plugging the provided on its front side with the seal Di ment carrier, wherein the seal carrier on the Uml enkblock or the tensioner connected thereto so is fixed, that an insertion of the pull cable from the cable deflection forth through the seal does not push out the tubular seal carrier with the content of this held seal from the pressure chamber.
  • the fixation of the seal carrier with the seal arranged thereon must be able to absorb only those axial forces which are exerted on the seal carrier with seal during assembly of the tensioning device by pushing through the seal.
  • the seal carrier is in addition to seal radially against anyway pressed the respective enclosing wall, so that no additional axial forces act on the seal carrier with seal.
  • the tensioner tube is inserted into a formed in Umlenkblock receiving opening, as known from the generic EP 2 082 926 B 1, and thus the walls of the pressure chamber and adjoining Strafferrohr with the piston inserted therein aligned with each other can be provided be that the formed on the seal carrier form-fitting design is resiliently fixed inside on the di e pressure chamber enclosing wall of the Umlenkblocks or Strafferrohres.
  • the tensioner tube is pushed onto a tubular end region of the deflection block
  • the seal carrier may be provided on the deflection block for fixation of the seal carrier at its end facing away from the rope, a U-shaped and the open end face of the tubular end portion of the Umlenkblocks to summarizing radial holding and Di chtun gsansatz, wherein on the au f the outer side of the tubular end portion lying U-leg form closing configurations for engaging in on the outer surface of the Endberei chs of the U mlenkblocks formed counter-configurations and on the connecting leg of the holding and sealing attachment a radial sealing lip for sealing the pressure chamber are formed against the tightening tube pushed onto the tubular end region of the deflecting block.
  • the connection between the holding and sealing approach of the tubular seal carrier and the rohrförmi gene end portion of the Umlenkblocks al s clip connection is formed.
  • the seal is axially attached to the Sei lumlenkung facing the end of the seal carrier and sealingly connected to the seal carrier, wherein according to an embodiment of the invention di seal engages with an approach in the open end of the rohrförmi gene seal carrier and it is positively fixed to the sealing encompassing the wall of the seal carrier.
  • seal and seal carrier in the 2- method are produced as a single component.
  • FIG. 1 shows the deflection block of a tensioning device with tensioner tube connected thereto and a seal carrier inserted into the pressure chamber of the peripheral block in a sectional view
  • FIG. Fig. 2 the seal carrier with it to halternder seal before
  • the structure of the tensioning device as a whole corresponds to the tensioning device described in the generic EP 2 082 926 B1, so that reference is additionally made to the disclosure of the aforementioned publication.
  • the tensioner tube is not inserted into a receiving opening formed in the diverter block, but outside onto a tubular end section of the diverter block deferred, resulting in a speci elle embodiment of the holder of the seal carrier according to the invention results in the Umlenkblock.
  • a pressure chamber 11 is formed in the deflection block 110 of a tensioning device, which is enclosed by a wall 1 2 of the deflection block 1 0.
  • a gas generator 1 3 is connected, is introduced via the pressure gas generated by d i esem in the pressure chamber 1 1.
  • the Umlenkblock 1 0 trained he hi he not further illustrated Seilumlenkung opposite end of the Uml enkblock 10 is provided with a tubular Endberei ch 1 4, on a Strafferrohr 1 5 pushed and connected in a suitable manner with the Umlenkblock 1 0 ,
  • a traction cable 1 6 is coming from the rope deflection not shown coming (from the left) through the pressure chamber 1 1 of the Umlenkblocks 1 0 and connected to a in Strafferroh r 15 arranged piston 1 7 by means of a trained on this rope clamp 1 8, wherein on the piston 1 7 with rope clamp 1 8 a si ch known ball backstop 1 9 formed is to avoid after completion of the tightening process a return of the piston 1 7 in the tensioner tube 1 5.
  • a seal 2 1 is provided with a cylindri's part 32 completely fills the pressure chamber 1 1 and sealingly surrounds the traction cable 16 passed through it.
  • seal carrier 20 For fi xation of the position of the seal 2 1 in the deepest of the tubular end portion 14 of the Umlenkblocks 1 0 accessible forth pressure chamber 1 1 inserted into the pressure chamber 1 1 and extending through the pressure chamber 1 1 seal carrier 20 is provided at the front open end the seal 21 is determined by the fact that the seal 2 1 engages with a subsequent to its cylindrical portion 32 approach 30 in the end of the tubular seal carrier 20 and by means of the wall of the tubular seal carrier 20 on the one hand and on the projection 30 of the seal 2 1 on the other arranged complementary form-fitting configurations 3 1 positively fixed to the seal carrier 20 i st.
  • the preassembly of a seal 2 1 and a guide plate 20 can be carried out. In order to avoid such a pre-assembly step, it may also be envisaged to produce seal 2 1 and sealing carrier 20 as a unitary component in the 2-component process.
  • a U-shaped holding and sealing projection 24 whose inner U-leg of the inner wall of the seal carrier 20th is formed, while the outer U-leg 25 outside of the outer peripheral surface of the tubular end portion 1 4 of the Umlenkblocks 1 0 aufli egt.
  • the tubular end portion 14 is provided with a radially recessed shoulder 35 for receiving the U-leg 25, so that the tensioner tube 1 5 passes over the U-leg 25 of the holding and sealing approach 24 when plugging onto the tubular end portion 1 4 ,
  • At the free end of the U-leg 25 are distributed over the circumference of the holding and sealing lug 24 distributed a plurality of inwardly projecting hook shapes 26 which engage a formed in the outer peripheral surface of the re-entrant heel 35 of the tubular end portion 14 H intersection 27 and thereby the seal carrier 20 axially fixed to the Umlenkblock 1 0 festl.
  • this Deutschengri f his U-leg 25 of the seal carrier 20 is additionally secured by the U-leg 25 of its holding and Di treatment approach 24 over tightening 1 5.
  • the corresponding axial fixation of the seal carrier 20 can also be done by means of an introduced into the wall of the tensioner tube groove, in the e e provided on the seal carrier 20 bead when inserting the tensioner tube 1 5 engages.

Landscapes

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

Abstract

L'invention concerne un dispositif tendeur pour une ceinture de sécurité comprenant un tube tendeur pour recevoir et guider un piston entraîné par du gaz et un câble de traction raccordé au piston et relié à un composant de ceinture de sécurité à mettre en mouvement de tension et guidé par un bloc de déviation relié au tube tendeur. Une chambre de pression raccordée à un générateur de gaz appliqué sur le bloc de déviation est formée dans le bloc de déviation et, pour étancher la chambre de pression par rapport au câble de traction entrant dans la chambre de pression à partir d'une déviation formée dans le bloc de déviation et courant à travers la chambre de pression, un joint entourant toute la surface du câble est disposé à l'extrémité côté déviation de la chambre de pression et est fixé dans la chambre de pression pour empêcher un déplacement axial. Le dispositif tendeur est caractérisé en ce que le joint (21) fait partie d'un porte-joint (20) tubulaire qui est inséré dans la chambre de pression (11), s'étend à travers cette dernière (11) et présente sur son pourtour au moins une ouverture de passage (23) pour le gaz de pression amené par le générateur de gaz (13) et est fixé à son extrémité opposée à la déviation de câble par une configuration à complémentarité de forme (26, 27) au bloc de déviation (10) ou au tube tendeur (15) relié à celui-ci.
PCT/EP2013/073481 2012-11-15 2013-11-11 Dispositif tendeur pyrotechnique à unité d'étanchéité d'un montage facile WO2014076029A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012110997.4 2012-11-15
DE102012110997.4A DE102012110997B4 (de) 2012-11-15 2012-11-15 Pyrotechnische Straffvorrichtung mit montagefreundlicher Dichtungseinheit

Publications (1)

Publication Number Publication Date
WO2014076029A1 true WO2014076029A1 (fr) 2014-05-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/073481 WO2014076029A1 (fr) 2012-11-15 2013-11-11 Dispositif tendeur pyrotechnique à unité d'étanchéité d'un montage facile

Country Status (2)

Country Link
DE (1) DE102012110997B4 (fr)
WO (1) WO2014076029A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014105446B4 (de) * 2014-04-16 2018-01-11 Autoliv Development Ab Straffvorrichtung mit einem durch eine Materialschwächung in einem Dichtungsträger ausgebildeten Öffnungsbereich
DE102015111083B4 (de) 2015-07-09 2018-07-26 Autoliv Development Ab Straffvorrichtung mit Dichtungsvorrichtung
DE102019126813B4 (de) * 2019-10-07 2021-06-10 Autoliv Development Ab Straffvorrichtung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007062600A (ja) * 2005-08-31 2007-03-15 Takata Corp プリテンショナ及びシートベルト装置
EP2082926B1 (fr) * 2008-01-23 2011-02-23 Takata Corporation Prétensionneur et appareil de ceinture de sécurité

Family Cites Families (2)

* 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
JP3836708B2 (ja) * 2001-11-13 2006-10-25 株式会社東海理化電機製作所 プリテンショナ装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007062600A (ja) * 2005-08-31 2007-03-15 Takata Corp プリテンショナ及びシートベルト装置
EP2082926B1 (fr) * 2008-01-23 2011-02-23 Takata Corporation Prétensionneur et appareil de ceinture de sécurité

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Publication number Publication date
DE102012110997A1 (de) 2014-05-15
DE102012110997B4 (de) 2020-08-20

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