WO1995031359A1 - Configuration d'ancrage a positions multiples d'une ceinture de securite de vehicule - Google Patents

Configuration d'ancrage a positions multiples d'une ceinture de securite de vehicule Download PDF

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Publication number
WO1995031359A1
WO1995031359A1 PCT/GB1995/001080 GB9501080W WO9531359A1 WO 1995031359 A1 WO1995031359 A1 WO 1995031359A1 GB 9501080 W GB9501080 W GB 9501080W WO 9531359 A1 WO9531359 A1 WO 9531359A1
Authority
WO
WIPO (PCT)
Prior art keywords
bar
vehicle seat
multiposition
seat belt
aperture
Prior art date
Application number
PCT/GB1995/001080
Other languages
English (en)
Inventor
Ian Alexander Gordon
Original Assignee
Alliedsignal Limited
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 Alliedsignal Limited filed Critical Alliedsignal Limited
Publication of WO1995031359A1 publication Critical patent/WO1995031359A1/fr

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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
    • B60R22/20—Anchoring devices adjustable in position, e.g. in height
    • B60R22/201—Anchoring devices adjustable in position, e.g. in height with the belt anchor connected to a slider movable in a vehicle-mounted track
    • B60R22/205—Anchoring devices adjustable in position, e.g. in height with the belt anchor connected to a slider movable in a vehicle-mounted track the slider comprising emergency actuated locking means
    • 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
    • B60R22/26—Anchoring devices secured to the seat

Definitions

  • This invention relates to a multipo ⁇ ition vehicle seat belt anchorage arrangement, especially but not exclusively to a rear seat belt buckle anchorage.
  • front seats In motor vehicles it is usual for front seats to be adjust ⁇ able to accommodate occupants having different lengths of leg and it is known to provide seat belt buckle mountings which can adapt to such adjustment.
  • rear seats are usually fixed in position and the respective buckle anchor ⁇ ages are designed to permit the safety restraint buckles to project through an aperture or often to simply pass through a separation of the seat and seat back squabs.
  • hitherto unusually small vehicles designed to accommodate four passengers it may be desirable to provide for some forward movement of the rear seat, possibly when not occupied or occupied by infants, to enhance the available storage space for luggage behind the rear seat.
  • Such movement of the rear seat might readily be provided by the use of a slide similar to a conventional front seat slide but this may result in the seat belt anchorages needing to be unacceptably long if the buckles are not to be retracted through the seat during a forward moving adjustment.
  • One object of the invention is therefore to provide a multi ⁇ po ⁇ ition rear seat belt anchorage arrangement which overcomes the above shortcoming.
  • a multi- position vehicle seat belt anchorage comprising a bar and means for mounting the bar to a vehicle body so that the bar can extend longitudinally in a fore and aft direction and the bar carrying thereon a longitudinally movable belt supporting member having an aperture which embraces the bar and is freely movable along the bar in either direction when not subject to belt tension the geometry of said member being such as to induce locking by jamming of the belt supporting member on the bar in the presence of belt tension.
  • An anchorage in accordance with the invention can be readily adapted to provide locking in of a pretensioning action if required.
  • Fig. 1 is a general arrangement of a vehicle rear seat with a seat belt buckle anchorage according to the invention
  • Figs. 2 and 3 illustrate sectional views of alternative sliders for the anchorage of Fig. 1;
  • Figs. 5(a) and 5(b) illustrate sectional views of a modification of the slider of Figs. 4(a) (b) (c).
  • Fig. 6(a) illustrates an anchorage bar having notches
  • Fig. 6(b) and 6(c) illustrate variants on the sliders of Figs. 2 and 5 respectively for use on a notched anchorage bar and
  • Fig. 7(a) and 7(b) illustrate a variant enabling pretensioning to be incorporated.
  • each seat belt buckle such as 2 of statutory rear passenger seat belts is attached by a steel or woven webbing strap 3 which extends from the buckle downwards through an aperture 4 in the seat and is attached to a slider or bobbin 5 which is normally freely movable along a steel bar 6, the ends 7 and 8 of which are connected to secure mountings attached to the vehicle body.
  • the bar is
  • FIG. 2 the section shown therein through the slider or bobbin 5 illustrates that the latter is ⁇ lide- ably supported on the bar 6 via generally annular radially inwardly extending flanges of the bobbin which are positioned towards the forward end of the bobbin such that belt tension acts on a line 'X 1 which passes rearward and outside lower internal contact surfaces of both flanges.
  • the apertures are such that tilting of the bobbin under belt tension is thereby such as to result in tilting and jamming of the bobbin 5 on the bar 6 to provide a functionally solid buckle anchorage in the event of a crash.
  • it has been found that such jamming is achieved where the relative angles of the slider and the bar are about 83 of arc.
  • the buckle is connected to a tubular slider 15 via webbing connected to a rearward extending arm 17 of the slider on bar 16. Again, since the slider is provided with substantial clearance relative to the bar tension in the
  • the alternative form of slider illustrated in Fig. 4 comprises a pressed or forged and angled plate-like member 40 which is provided with an aperture 41 of sufficient diameter to ensure free movement along the bar 42.
  • Member 40 has a rearwardly angled portion 43 a slot 44 of which accommodates a loop of woven webbing to which the seat belt buckle is attached.
  • the angled part is strengthened by webs such as 45.
  • the length of the loop of webbing is sufficient to permit the buckle to lie above the respective seat.
  • the geometry of the slider is thereby such as to permit forward and rearward movement along the bar when the webbing is not under tension. The slider therefore moves along the bar with adjustment of the seat position between forward and rearward locations.
  • normal belt webbing tension is sufficient to enable the slider to lock on the bar against forward movement by virtue of a jamming action.
  • SUBSTITUTESHEET(RULE26) bending moment exerted by the webbing in a crash situation is limited to a predetermined value by the provision of an additional portion 55 having an aperture 56 which is of larger diameter than the forwardly located aperture 51.
  • the geometry of the slider 50 is such that in a normal deployed condition the lower surface 56a of aperture 56 is clear of the bar 52 but under the effects of greater belt tension such as is experienced in a crash the portion 54 is resiliently deflected whereby the lower extremity 56(b) of the aperture 56 is able to provide support, against further such deflection and limiting the binding moment as between portion 53 and 54.
  • the bar may be provided with a succession of annular or part annular notches the forward flanks of which provide abutments with which the slider is able to engage when the slider is tilted when the attached buckle and webbing being under tension.
  • Such notches are illustrated by Fig. 6(a) wherein it is observed that whilst the front flanks 61 such notches of the bar 60 are substantially radially directed the rearward flanks 62 are angled to permit entry of the forward edge such as 63 of the slider 64 of Fig. 6(b) or 66 of the slider 67 of Fig. 6(c).
  • the angle of mounting of the bar to the horizontal may be chosen to optimise the operation.
  • mounting of the bar with the forward end lower than the rearward end will assist the ease of forward movement of the slider but may detract from the ability of the slider to lock.
  • lowering the forward end will assist the bar to bend under crash conditions which may be advantageous both in increasing the security of position of the locked slider on the bar and in the introduction of energy absorption resulting in some belt webbing force limitation.
  • the end mountings thereof to the vehicle body may be designed to be sufficiently resilient to permit such bending.
  • An anchorage in accordance with the invention may be adapted if required to provide means for locking in a pretensioning action. It is known to provide means which is responsive to a predetermined abnormal vehicle deceleration to effectively shorten the length of seat belt webbing which passes across the body of an occupant. Such action is normally designed to occur in advance of the full effect of a crash impact and
  • Pretensioning is normally effected either by means to apply a force of a spring or by other means such as a pyrotechnic actuator. It is usually a necessity to include means to lock in the belt shortening such as to prevent subsequent payout again as a result of the inertia of the occupant.
  • a slider 70 is provided which is normally slideable along a bar 71 similarly to sliders described above, more especially with reference to Figs. 5 or 6.
  • the line of action 'X' of the belt webbing 74 is such as to pass outside the lower left point of contact 72 of the slider with the bar during lock up as shown in Fig. 7b.
  • Pretensioning of- the belt is effected in this example by an actuator which is not shown via a cable 73.
  • the lock up therefore ensures that the cable is not required to withstand the subsequent forces exerted by the occupant on the belt webbing. If it is desirable to improve on the locking provided by the jamming effect on the bar, the bar may be provided with notches such as referred to with reference to Fig. 6a and these and the sliding surfaces of the slider will then be designed to ensure free movement over the notches in the direction of the action of the pretensioner actuator.

Landscapes

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

Abstract

Ancrage à positions multiples d'une ceinture de sécurité de véhicule, conçu pour s'adapter au réglage d'un siège arrière et comprenant une barre (71), destinée à être fixée sur le corps d'un véhicule de manière à s'étendre longitudinalement dans une direction longitudinale, sur laquelle repose un élément de support (70) de ceinture, mobile longitudinalement, doté d'une ouverture enserrant la barre et pouvant se déplacer librement le long de celle-ci dans l'une ou l'autre direction lorsque ledit support n'est pas soumis à la tension de la ceinture; cet élément de support possède une géométrie telle que son verrouillage est provoqué par son blocage sur la barre sous l'effet de la tension de la ceinture. Cette configuration est particulièrement appropriée pour verrouiller une action de mise sous tension préalable exercée par une man÷uvre à l'aide d'un câble (73).
PCT/GB1995/001080 1994-05-14 1995-05-12 Configuration d'ancrage a positions multiples d'une ceinture de securite de vehicule WO1995031359A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9409700A GB9409700D0 (en) 1994-05-14 1994-05-14 Multiposition vehicle seat belt anchorage arrangement
GB9409700.3 1994-05-14

Publications (1)

Publication Number Publication Date
WO1995031359A1 true WO1995031359A1 (fr) 1995-11-23

Family

ID=10755157

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1995/001080 WO1995031359A1 (fr) 1994-05-14 1995-05-12 Configuration d'ancrage a positions multiples d'une ceinture de securite de vehicule

Country Status (2)

Country Link
GB (1) GB9409700D0 (fr)
WO (1) WO1995031359A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1580088A1 (fr) * 2004-03-22 2005-09-28 Key Safety Systems, Inc. Prétensionneur de ceinture
EP1580090A1 (fr) * 2004-03-22 2005-09-28 Key Safety Systems, Inc. Prétensionneur de ceinture
EP1580091A1 (fr) * 2004-03-22 2005-09-28 Key Safety Systems, Inc. Prétensionneur de ceinture
US7118133B2 (en) 2004-06-24 2006-10-10 Key Safety Systems, Inc. Seat belt pretensioner
US7131667B2 (en) 2004-06-11 2006-11-07 Key Safety Systems, Inc. Seat belt pretensioner
US7137650B2 (en) 2004-06-24 2006-11-21 Key Safety Systems, Inc. Seat belt pretensioner
US7147251B2 (en) 2004-06-24 2006-12-12 Key Safety Systems, Inc. Seat belt pretensioner

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB938135A (en) * 1961-07-06 1963-10-02 Volvo Ab Improved safety belt device for vehicles
US3865398A (en) * 1973-02-05 1975-02-11 Toni Woll Expandable crash-restraining means
GB2230936A (en) * 1989-05-05 1990-11-07 Autoliv Kolb Limited Adjustable pillar loop for seat belts
EP0543706A1 (fr) * 1991-11-18 1993-05-26 Cesa Compagnie Europeenne De Sieges Pour Automobiles Dispositif d'accrochage automatique au plancher d'un véhicule d'un moyen de fixation d'une ceinture de sécurité

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB938135A (en) * 1961-07-06 1963-10-02 Volvo Ab Improved safety belt device for vehicles
US3865398A (en) * 1973-02-05 1975-02-11 Toni Woll Expandable crash-restraining means
GB2230936A (en) * 1989-05-05 1990-11-07 Autoliv Kolb Limited Adjustable pillar loop for seat belts
EP0543706A1 (fr) * 1991-11-18 1993-05-26 Cesa Compagnie Europeenne De Sieges Pour Automobiles Dispositif d'accrochage automatique au plancher d'un véhicule d'un moyen de fixation d'une ceinture de sécurité

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1580088A1 (fr) * 2004-03-22 2005-09-28 Key Safety Systems, Inc. Prétensionneur de ceinture
EP1580090A1 (fr) * 2004-03-22 2005-09-28 Key Safety Systems, Inc. Prétensionneur de ceinture
EP1580089A1 (fr) * 2004-03-22 2005-09-28 Key Safety Systems, Inc. Prétensionneur de ceinture
EP1580091A1 (fr) * 2004-03-22 2005-09-28 Key Safety Systems, Inc. Prétensionneur de ceinture
EP1783011A2 (fr) * 2004-03-22 2007-05-09 Key Safety Systems, Inc. Prétendeur
EP1783011A3 (fr) * 2004-03-22 2008-03-05 Key Safety Systems, Inc. Prétendeur
US7131667B2 (en) 2004-06-11 2006-11-07 Key Safety Systems, Inc. Seat belt pretensioner
US7118133B2 (en) 2004-06-24 2006-10-10 Key Safety Systems, Inc. Seat belt pretensioner
US7137650B2 (en) 2004-06-24 2006-11-21 Key Safety Systems, Inc. Seat belt pretensioner
US7147251B2 (en) 2004-06-24 2006-12-12 Key Safety Systems, Inc. Seat belt pretensioner

Also Published As

Publication number Publication date
GB9409700D0 (en) 1994-07-06

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