WO2005037616A1 - Retracteur de ceinture autobloquant - Google Patents

Retracteur de ceinture autobloquant Download PDF

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Publication number
WO2005037616A1
WO2005037616A1 PCT/EP2004/010553 EP2004010553W WO2005037616A1 WO 2005037616 A1 WO2005037616 A1 WO 2005037616A1 EP 2004010553 W EP2004010553 W EP 2004010553W WO 2005037616 A1 WO2005037616 A1 WO 2005037616A1
Authority
WO
WIPO (PCT)
Prior art keywords
belt
component
belt shaft
profile head
recess
Prior art date
Application number
PCT/EP2004/010553
Other languages
German (de)
English (en)
Inventor
Martin Schmidt
Kay LÖFFLER
Jochen Behrmann
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 WO2005037616A1 publication Critical patent/WO2005037616A1/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
    • B60R22/34—Belt retractors, e.g. reels
    • B60R22/341—Belt retractors, e.g. reels comprising energy-absorbing means
    • B60R22/3413—Belt retractors, e.g. reels comprising energy-absorbing means operating between belt reel and retractor frame
    • 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
    • B60R22/28—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices
    • B60R2022/286—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices using deformation of material
    • B60R2022/287—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices using deformation of material of torsion rods or tubes

Definitions

  • the invention relates to a self-locking belt retractor with a blocking device for the belt shaft that can be controlled in a vehicle-sensitive and / or belt-sensitive manner, with a profile head as a carrier of a locking member that is movably arranged to lock the belt shaft with the housing, and with a force limiting device in the form of a one end rotatably fixed to the belt shaft and at its other end, torsion bar connected in a rotationally fixed manner to the profile head.
  • a belt retractor with the aforementioned features is described in DE 196 81 341 Cl.
  • two shear pins are arranged on the front side of the belt shaft facing the profile head, which engage in corresponding bores in the profile head and during assembly of the Belt retractors are riveted to the profile head, so that the belt shaft and profile head are held together as an assembly during the further assembly processes.
  • the known belt retractor has the disadvantage that the production of the shear pin connection is complex because the shear pins engaging in the recesses of the profile head are riveted to it, with correspondingly high demands being made on the accuracy of fit of the connection.
  • the invention is therefore based on the object to improve the connection between the belt shaft and profile head in relation to their assembly in a self-locking belt retractor of the type mentioned.
  • the basic idea of the invention provides that for connecting the belt shaft and the profile head, at least one axially projecting projection arranged on one of the interconnected components engages in at least one recess made on the end face of the other component and in the overlap area of the projection and A recess is provided on both sides of a longitudinal center plane of the belt shaft and, parallel to it, the securing elements that surround the recess of one component and secure the attachment of the other component are provided.
  • the invention is associated with the advantage of a process-reliable assembly, because after the belt shaft and profile head have been put together, only the securing elements arranged with a tangential course are to be inserted into the bores respectively arranged in the overlap area of the shoulder and recess.
  • the invention provides that the securing elements are designed as shear pins which are inserted into bores arranged in the ring of one component and penetrate the shoulder of the other component in assigned bores.
  • the principle of a shear pin connection known from the generic state of the art is retained, but with a considerably simplified assembly of the assembly consisting of the belt shaft and profile head.
  • the securing elements are designed as retaining pins which are inserted into bores arranged in the ring of the one component and engage in grooves formed on the circumference of the shoulder of the other component.
  • this embodiment in addition to the process-reliable assembly by simply inserting the retaining pins, has the advantage that the force peak which arises during a shear pin connection is eliminated when the torsion bar becomes effective and the force limiting system responds more smoothly.
  • connection via the retaining pins lying in the groove still transmits axial forces even during the force limitation, so that the elongation of the torsion bar that occurs when it is twisted due to plastic deformation has no adverse effects with regard to the assignment of the profile head and belt shaft to one another.
  • a circumferential groove is arranged on the circumference of the attachment and the retaining pins are arranged in a tangential course to the deepest of the groove.
  • 1 is an assembly consisting of belt shaft and profile head as part of a self-locking belt retractor
  • FIG. 2 shows a schematic side view of a connection between the belt shaft and the profile head which is carried out by means of a shear pin arrangement
  • Fig. 3 shows the subject of Figure 2 in another embodiment with a retaining pin connection.
  • the subject of the invention is a self-locking belt retractor
  • the number 10 in FIG Belt shaft and designated 11 a profile head to be coupled to the belt shaft.
  • Belt shaft 10 and profile head 11 are coupled to one another via a torsion bar 12, the torsion bar 12 having its left end in FIG. 1 being connected in a rotationally fixed manner to the belt shaft 10 and having its right end in FIG. 1 being connected in a rotationally fixed manner to the profile head 11, for which purpose the profile head 1 1 has a receiving opening 13 corresponding to the shape of the end of the torsion bar 12.
  • the profile head 11 extends with an axial extension 14 extending from it and forming the receiving opening 13 into a recess 15 (FIGS. 2 and 3) formed in the end of the belt shaft 10.
  • FIG. 1 The attachment of the shoulder 14 of the profile head 11 in the associated recess 15 of the belt shaft 10 is shown in a first embodiment in FIG.
  • bores 17 for receiving shear pins 18 which can be inserted therein are arranged on both sides of an imaginary long center plane of the belt shaft 10 in the ring 16 surrounding the recess 15.
  • the projection 14 of the profile head 1 1 has bores 19 which are arranged such that in the assigned position of the profile head 11 with the projection 14 inserted into the recess 15 of the belt shaft 10, the bores 19 are aligned with the bores 17 of the belt shaft 10, so that the shear pins 18 inserted into the bores 17 pass through the shoulder 14 in the bores 19.
  • a bearing pin 22 is provided on the side opposite the belt shaft 10, which is used to support the assembly consisting of the belt shaft 10 and profile head 11 in the U-shaped housing of the belt retractor (not shown here).
  • the shear pins 18 define the response threshold for the effectiveness of the torsion bar 12, as described in detail in the generic DE 196 81 341 Cl.
  • the exemplary embodiment shown in FIG. 3 differs from the previously described exemplary embodiment in that instead of the shear pins, simple retaining pins 21 are now provided, for the reception of which the attachment 14 is provided with a circumferential groove 20. Due to the positive connection of the torsion bar 12 with the belt shaft 10 on the one hand and the profile head 11 on the other hand, the components 10, 11 each rotate together in normal operation of the belt retractor. If, due to the blocking of the profile head 11 and a belt tensile force still acting on the belt shaft 10 in the belt pull-out direction, a corresponding force is exerted on the torsion bar 12, the torsion bar 12 yields to the acting torque, so that the relative rotation of the belt shaft 10, which has already been described, is blocked Profile head 1 1 occurs.
  • the assembly can be simplified by the fact that the holding pins 21 can already be inserted into the associated bores 17 of the ring 16 of the belt shaft 10, so that the profile head 11 can be snapped with its extension 14 into the recess 15 of the belt shaft 10 during assembly by the retaining pins 21 giving way slightly and snapping into the groove 20 of the extension 14.

Landscapes

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

Abstract

L'invention concerne un rétracteur de ceinture autobloquant, lequel rétracteur comporte une tête profilée, servant de support pour un organe de blocage pouvant se déplacer pour le verrouillage de l'arbre de ceinture avec le logement, et un dispositif de limitation de forme sous forme de barre de torsion. Ce rétracteur de ceinture se caractérise en ce qu'au moins une saillie s'étendant axialement (14), formée sur un des composants reliés l'un à l'autre (10, 11), s'engage dans au moins un évidement (15) formé côté frontal sur l'autre composant (10, 11) pour relier l'arbre de ceinture (10) à la tête profilée (11) et des éléments de sécurité (18, 21) sont prévus dans la zone de chevauchement de la saillie (14) et de l'évidement (15) des deux côtés d'un plan médian longitudinal de l'arbre de ceinture (10) et parallèlement, lesquels éléments de sécurité traversent la couronne (16) d'un composant (10, 11), entourant l'évidement (14), et fixent la saillie (14) de l'autre composant (10, 11) par liaison de forme.
PCT/EP2004/010553 2003-10-16 2004-09-21 Retracteur de ceinture autobloquant WO2005037616A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10348853.7 2003-10-16
DE2003148853 DE10348853A1 (de) 2003-10-16 2003-10-16 Selbstsperrender Gurtaufroller

Publications (1)

Publication Number Publication Date
WO2005037616A1 true WO2005037616A1 (fr) 2005-04-28

Family

ID=34442146

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/010553 WO2005037616A1 (fr) 2003-10-16 2004-09-21 Retracteur de ceinture autobloquant

Country Status (2)

Country Link
DE (1) DE10348853A1 (fr)
WO (1) WO2005037616A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8033494B2 (en) 2008-05-09 2011-10-11 Takata-Petri Ag Belt retractor with axial securing and method for the production thereof
CN104742856A (zh) * 2013-12-30 2015-07-01 常州博万达汽车安全设备有限公司 安全带卷收器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005051891B3 (de) * 2005-10-29 2007-03-22 Autoliv Development Ab Gurtaufroller mit einem Gurtwelle und Profilkopf gegeneinander festlegenden Sicherungselement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0888939A1 (fr) * 1997-07-04 1999-01-07 Alliedsignal Limited Retracteur
DE19681341C1 (de) * 1995-04-14 2002-08-01 Autoliv Dev Gurtaufroller mit abgedämpftem Kraftbegrenzer
WO2003078217A1 (fr) * 2002-03-08 2003-09-25 Breed Automotive Technology, Inc. Retracteur de ceinture de securite a absorption d'energie

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19681341C1 (de) * 1995-04-14 2002-08-01 Autoliv Dev Gurtaufroller mit abgedämpftem Kraftbegrenzer
EP0888939A1 (fr) * 1997-07-04 1999-01-07 Alliedsignal Limited Retracteur
WO2003078217A1 (fr) * 2002-03-08 2003-09-25 Breed Automotive Technology, Inc. Retracteur de ceinture de securite a absorption d'energie

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8033494B2 (en) 2008-05-09 2011-10-11 Takata-Petri Ag Belt retractor with axial securing and method for the production thereof
CN104742856A (zh) * 2013-12-30 2015-07-01 常州博万达汽车安全设备有限公司 安全带卷收器

Also Published As

Publication number Publication date
DE10348853A1 (de) 2005-05-19

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