EP0368277A1 - Boucle de ceinture de sécurité - Google Patents

Boucle de ceinture de sécurité Download PDF

Info

Publication number
EP0368277A1
EP0368277A1 EP89120692A EP89120692A EP0368277A1 EP 0368277 A1 EP0368277 A1 EP 0368277A1 EP 89120692 A EP89120692 A EP 89120692A EP 89120692 A EP89120692 A EP 89120692A EP 0368277 A1 EP0368277 A1 EP 0368277A1
Authority
EP
European Patent Office
Prior art keywords
weight
buckle
slider
locking mechanism
acceleration
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.)
Granted
Application number
EP89120692A
Other languages
German (de)
English (en)
Other versions
EP0368277B1 (fr
Inventor
Claude Bernard Aubry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Engineering (Netherlands) BV
Original Assignee
General Engineering (Netherlands) BV
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 General Engineering (Netherlands) BV filed Critical General Engineering (Netherlands) BV
Publication of EP0368277A1 publication Critical patent/EP0368277A1/fr
Application granted granted Critical
Publication of EP0368277B1 publication Critical patent/EP0368277B1/fr
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B11/00—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts
    • A44B11/25—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts with two or more separable parts
    • A44B11/2503—Safety buckles
    • A44B11/2507—Safety buckles actuated by a push-button
    • A44B11/2523—Safety buckles actuated by a push-button acting parallel to the main plane of the buckle and in the same direction as the fastening action

Definitions

  • THE PRESENT INVENTION relates to a safety belt buckle and more particularly to a safety belt buckle intended for use in a motor vehicle such as motor car.
  • a conventional buckle of this type defines a housing containing a locking mechanism which is adapted to en­gage and retain a tongue inserted into the housing.
  • the tongue is connected to a portion of a safety belt.
  • the tongue is released from the buckle by depressing a push-­button or slider which releases the locking mechanism contained within the housing.
  • the tongue is then ejected from the housing by an ejector.
  • the buckle In either event, when an accident situation is sensed, the buckle is subjected to a severe downward ac­celeration, and is then subjected to an equally rapid deceleration as the buckle reaches the end of its per­ mitted travel.
  • the components of the locking mechanism within the housing of a conventional buckle each, of course, have inertia, and may thus move relative to the housing either during the acceleration or during the deceler­ation of the buckle, depending upon the freedom of move­ment available to each component of the locking mechan­ism.
  • the components are retained in the locking condition by a spring bias, it is possible, due to the significant acceleration and deceleration involved, that the in­ertia of the components may overcome the spring bias, and consequently parts of the locking mechanism may be moved, and the locking mechanism may enter the unlocking condition.
  • the buckle may inadvertently release the tongue as a consequence of the operation of the pre­tensioner. This is clearly undesirable since, should such a release occur, the person intended to be re­strained by the safety belt is not restrained at all at the instance that an accident has been sensed.
  • the present invention seeks to provide an im­proved buckle in which the above-described disadvantage of the existing buckles, is obviated.
  • a buckle for use with a safety belt system, said buckle comprising a locking mechanism adapted to receive and retain the tongue mounted on a safety belt, said mechan­ism incorporating a manually operable slider element operable to release the locking mechanism to permit the tongue to be withdrawn from the buckle, the buckle com­prising an inertia element in the form of a pivotally mounted weight responsive to acceleration in at least one direction relative to the buckle to prevent said locking mechanism from moving to a release condition, characterised in that the pivotally mounted weight is provided with part thereof which, in an initial con­dition, lies adjacent part of the slider so that the slider can move freely but which, when the weight has moved pivotally as a consequence of the sensed acceler­ation, engages the slider when the slider starts to move toward the release position, thus preventing the slider from moving to the release position.
  • a second pivotally mounted weight is provided, the second weight being dimensioned and positioned so that when subjected to an acceleration in a direction opposite to the sense of said one direction the second weight engages part of the first weight and moves the first weight against the effect of its own in­ertia to a position in which the said part of the first weight prevents operation of the locking mechanism.
  • the first weight is provided with an extending arm portion positioned to be engaged by said second weight when the second weight is sub­jected to said acceleration in the direction opposite to the said one direction.
  • the first weight is provided with a protruding arm comprising the said part thereof to engage the slider, the end of the arm being adapted to engage the slider.
  • pivotally mounted weight is mounted for pivotal movement about an axis which is substantially lying in the plan along which the slider element moves.
  • a buckle in ac­cordance with the present invention comprises a channel member 1 having a base 2 and two up-standing side walls 3,4.
  • the base of the channel is provided, ad­jacent one end, with an up-standing rivet 5 which is surrounded by a shaped guide washer 6.
  • a steel wire 7 is wound around the guide washer and passes through a tubular sleeve 8 to an anchoring point, for example on the body of a motor vehicle such as a car, so that the channel 1 is securely mounted in position.
  • the base 2 of the channel is provided with two elongate apertures 9 adjacent the lower edges of the side wall 3,4 each terminating, at a transverse forward edge 10.
  • Each side wall 3,4 is provided with a sub­stantially "L"-shaped aperture 11, each such aperture having a forwardly extending portion 12 and an upwardly extending portion 13.
  • each side wall 3 is provided with an outwardly extending tab 15 and two further apertures 16,17 which are of circular form.
  • the upper parts of the sides walls 3,4 are re­cessed, 18 toward the rear of the channel member.
  • a slider 19 is provided which is slidingly mounted upon the channel.
  • the slider 19 has an oper­ative front face 20 and two rearwardly extending arms 21 located on each side of the slider.
  • Each arm terminates with an inwardly directed protrusion 22 adapted to the received in the recess 18 on the side wall of the channel.
  • the inner face of each arm 21 is provided with a recess 23 of triangular configuration.
  • the ejector 24 Slidably mounted on the base of the channel is an ejector 24.
  • the ejector 24 has a cut-away region 25 on its front face provided for a purpose which will be described hereinafter and has a further horizontal cut-­away region 26 on its rear face.
  • the slider is also provided with a vertically cut-away portion 27 which forms a recess in the rear face of the slider. Part of the slider is slidably retained in an elongate axially extending aperture 28 formed in the base 2 of the channel 1.
  • a substantially planar elongate locking mem­ber 29 is provided which is mounted on the channel mem­ber, the locking member having, towards its rear end, an aperture 30 which is received over the rivet 5, so that the rivit 5 forms a pivot point for the locking member.
  • the central region of the locking member is provided with an aperture 31 which has, projecting into it from its rearward edge, a tongue 32, which is cranked slightly upwardly, and which receives one end of a spring 33.
  • the front end of the locking member is bi­furcated and forms two downwardly extending locking claws 34, which extend perpendicularly to the main part of the locking member and which are dimensioned to be inserted into the forward ends of the apertures 9, thus engaging the front surface 10 of those apertures.
  • a forwardly extending pro­jection 35 is provided adapted to engage one end of the spring 36.
  • the other end of the spring 36 engages a rear face of the slide 19. The spring 36 biasses the slider forwardly.
  • a rocker member 37 is provided having, at its lower end, projecting trunions 38 dimensioned to be re­ceived within the horizontal cut-away region 26 of the ejector 24.
  • the base of the rocket member 37 is re­ceived in the cut-away portion 27 of the ejector 24. thus the base of the rocker moves axially with the ejector, but can pivot relative to the ejector.
  • the rocker member 37 has at its upper end, a hook-shaped portion 39 which defines a recess 40.
  • a projection 41 is provided on the rear face of the rocker member.
  • the recess 40 of the rocker member is adapted to engage a secondary locking element 42 in the form of an elongate rod, the ends of the rod being dimensioned to pass through the "L"-shaped apertures 11 in the side walls 3 and 4 and into the triangular recesses 23 formed on the arms 21 of the push-button 19.
  • Two mounting axles 43,44 are provided which extend through the aligned apertures 16,17 formed in the side walls 3,4 of the channel.
  • Mounted on the ends of the first axle 43 are locking weights 45.
  • Each locking weight 45 comprises a portion 46 located above the centre of rotation thereof having significant mass.
  • the locking weight 45 is also provided with a forwardly ex­tending arm 47 and a secondary downwardly extending arm 48.
  • a spring 50 is provided which extends between a part of the portion 46 and an outwardly directed tab 5 provided on the side wall of the channel.
  • the second axle 44 carries secondary locking weights 50 each of which comprise a relatively large mass located below the pivot axis defined by the axle 44.
  • the described components when assembled, form a buckle which defines an entry path for a tongue 51 as conventionally found on a safety belt.
  • the tongue 51 has an enlarged head 52 joined to the main body of the tongue by relatively narrow shank 53.
  • the head has a curved front face 54 and defines rearwardly facing abut­ment surfaces 55.
  • the slider 24 is engaged with an aperture formed in the base of the channel and is slidable along the channel.
  • the recess 25 formed in the forward face of the slider has a configuration corresponding to that of the curved portion 54 provided on the tongue 51.
  • the spring 33 extends from the boss 41 provided on the rocker 37 to the tongue 32 provided on the locking ele­ment 29.
  • the spring serves both to bias the locking member pivotally upwardly about a pivoting point defined by the rivet 5 and also serves to force the lower end of the rocker forwardly, thus forcing the trunions 38 into the recess 26 provided on the rear of the slider 24.
  • the slider 24 is biassed forwardly.
  • the recess 40 defined by the rocker securely engages the secondary locking member 42.
  • the ends of the secondary locking member 42 pass through the aper­tures 11, and in the described condition of the buckle, the ends of the secondary locking member 42 pass through the upper ends of the vertically extending portions 13 of the L-shaped apertures 11 to be received within the triangular recesses 23 defined on the slider.
  • the secondary lock­ing member 42 prevents upward movement of the locking member to a release position and thus the tongue is re­tained within the buckle. If the push-button 19 is sub­sequently pushed inwardly, by virtue of the engagement of the ends of the secondary locking member 42 within the apertures 23, the secondary locking member is moved reawardly, thus causing the rocking member to commence rotation in an anti-clockwise direction. Also the spring 28 becomes compressed, thus applying a force to the locking member tending to rotate the locking member to the release position. As soon as the secondary lock­ing member 42 is aligned with the vertical portions 13 of the L-shaped apertures 11 the secondary locking mem­ber moves vertically, and the locking member 29 moves to the release position. The spring 33 then applies a force to the rocking member 37 causing the ejector 24 to move forwardly, thus ejecting the tongue from the buckle. Both the springs 33 and 36 again pass through a "dead centre" condition during this cycle of events.
  • the present invention provides means as illustrated in Figures 6 to 8, which serve to prevent the slider 19 from moving rearwardly under any acceler­ational forces applied to the buckle.
  • the means com­prise the pivotally mounted locking weights 45 and the secondary weights 50.
  • the locking weight 45 as appearing on each side of the buckle, is ordinarily spring biassed, by means of the spring 49, to the position illustrated in Figure 6. It can be seen that the great proportion of the mass of the weight 45 is located above the axis de­fined by the axle 43.
  • the forwardly extending arm 47 is so positioned, with regard to the slider 19, with the arm 47 located under the rearwardly extending arm 21 on the slider 19 so that the slider may move rearwardly.
  • the secondary arm 48 is adjacent the second mass 50.
  • the moment if inertia of the mass 45 about its pivoting axis is such that the mass will rotate, com­pressing the spring 49, but moving the mass 45 to a pos­ ition such that the horizontally extending arm 47 is located adjacent a rear face of one of the side arms 21 provided on the slider 19, thus preventing the slider 19 from moving towards the rear.
  • the second counter-weight 50 will tend to move towards the right, in the direction illustrated by the arrow 54.
  • the moment of inertia of the secondary weight 50 is selected to be greater than the moment of inertia of the weight 45 by such a degree that as the secondary weight 50 rotates in a clockwise direction as indicated by the arrow 56 in Figure 8, as a consequence of the acceleration in the direction of the arrow 55, the secondary weight 50 engages the downwardly extend­ing arm 48 causing the locking member 45 to rotate in the clockwise direction, compressing the spring 49 so that the member 45 again enters the position illustrated in Figure 8 in which it prevents rearward movement of the slider.
  • the present invention provides two co-operating rotating weights each with a predetermined moment of inertia, the moment of inertia of one weight being significantly greater than the moment of inertia of the other, the member hav­ing the lesser moment of inertia being adapted to ro­tate, under its inertia, to a position in which it pre­vents inadvertent opening of the buckle when subjected to acceleration in one sense, and the member having the greater moment of inertia rotating to drive the first member to the said position when the buckle is subjected to acceleration in the opposite sense.
  • FIG. 9 is a rear prospective view of a buckle, as proposed to be manufactured, incorporating the invention.
  • the various components of the buckle are identified using reference numbers as utilised above.

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  • Buckles (AREA)
EP19890120692 1988-11-08 1989-11-08 Boucle de ceinture de sécurité Expired EP0368277B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8826115A GB2227513B (en) 1988-11-08 1988-11-08 Improvements in or relating to a safety belt buckle
GB8826115 1988-11-08

Publications (2)

Publication Number Publication Date
EP0368277A1 true EP0368277A1 (fr) 1990-05-16
EP0368277B1 EP0368277B1 (fr) 1992-10-28

Family

ID=10646484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890120692 Expired EP0368277B1 (fr) 1988-11-08 1989-11-08 Boucle de ceinture de sécurité

Country Status (3)

Country Link
EP (1) EP0368277B1 (fr)
DE (1) DE68903326T2 (fr)
GB (1) GB2227513B (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0402839A2 (fr) * 1989-06-14 1990-12-19 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Dispositif à boucler
FR2659919A1 (fr) * 1990-03-26 1991-09-27 Takata Corp Boucle pour ceinture de securite d'un vehicule.
DE9202528U1 (de) * 1992-02-27 1992-04-16 Autoliv Development AB, Vårgårda Sicherheitsgurtschloß mit Verriegelungssperre
EP0485656A1 (fr) * 1990-11-15 1992-05-20 TRW Occupant Restraint Systems GmbH Fermeture pour ceinture de sécurité de véhicules automobiles
DE4305179A1 (fr) * 1992-02-19 1993-08-26 Takata Corp
EP0559403A1 (fr) * 1992-03-05 1993-09-08 Alliedsignal Limited Boucle pour ceinture de siège
EP0577073A1 (fr) * 1992-06-30 1994-01-05 TAKATA (EUROPE) VEHICLE, SAFETY TECHNOLOGY GmbH Procédé pour bloquer le bouton de déverrouillage, respectivement le mécanisme de verrouillage d'une boucle de ceinture de sécurité de véhicule et système de ceinture de sécurité mettant en oeuvre ce procédé
WO1998010673A1 (fr) * 1996-09-11 1998-03-19 Breed Automotive Technology, Inc. Boucle destinee a etre utilisee avec un pretensionneur
GB2322158A (en) * 1997-02-17 1998-08-19 Alliedsignal Ltd Vehicle seat belt buckle
EP1093339A1 (fr) * 1998-06-18 2001-04-25 Breed Automotive Technology, Inc. Boucle pour ceinture de securite utilisee avec un pretendeur
EP1219197A1 (fr) * 1999-08-13 2002-07-03 Ashimori Industry Co., Ltd. Dispositif pour boucle
US6539595B1 (en) 2001-06-29 2003-04-01 Charles E. Benedict Non-inertial release safety restraint belt buckle system
EP1597983A1 (fr) * 2004-05-18 2005-11-23 Takata Corporation Boucle et dispositif de ceinture de sécurité employant une telle boucle
US7370393B2 (en) 2004-09-20 2008-05-13 Delphi Technologies, Inc. Seat belt buckle for use with pretensioner
US7543363B2 (en) 2005-05-26 2009-06-09 Delphi Technologies, Inc. Seat belt buckle for use with pretensioner
WO2011052415A1 (fr) * 2009-10-28 2011-05-05 Ashimori Industry Co., Ltd. Dispositif de boucle

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4004701A1 (de) * 1990-02-15 1991-08-22 Autoflug Gmbh Sicherheitsgurtverschluss mit schocksicherung
JP2587877Y2 (ja) * 1992-05-26 1998-12-24 日本精工株式会社 シートベルト用バックル装置
DE4395228T1 (de) * 1992-10-09 1995-01-26 Autoliv Dev Eine Sicherheitsgurt-Verriegelungsvorrichtung
TWI684541B (zh) * 2019-01-11 2020-02-11 智崴資訊科技股份有限公司 扣具裝置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0212507A2 (fr) * 1985-08-17 1987-03-04 Autoflug Gmbh & Co Fahrzeugtechnik Boucle de verrouillage pour ceinture de sécurité
DE3537465A1 (de) * 1985-10-22 1987-04-23 Autoflug Gmbh Sicherheitsgurtverschluss
WO1988006012A1 (fr) * 1987-02-10 1988-08-25 Autoliv Development Aktiebolag Boucle de ceinture de securite

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1161602A (en) * 1965-11-13 1969-08-13 Wilmot Breeden Ltd Improvements in or relating to Vehicle Door Fastening Devices
JPS5122250B1 (fr) * 1968-03-06 1976-07-08
JPS5527948B2 (fr) * 1972-02-21 1980-07-24
US4367570A (en) * 1981-08-03 1983-01-11 Barbal Andrew L Automatically disengagable safety buckle assembly
GB2195140B (en) * 1986-09-16 1990-09-26 Autoliv Dev Improvements in or relating to a seat belt buckle
US4760975A (en) * 1987-06-30 1988-08-02 Gateway Industries, Inc. Seat belt retractor
DE3833483A1 (de) * 1988-10-01 1990-04-05 Autoflug Gmbh Gurtschloss mit massenausgleich

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0212507A2 (fr) * 1985-08-17 1987-03-04 Autoflug Gmbh & Co Fahrzeugtechnik Boucle de verrouillage pour ceinture de sécurité
DE3537465A1 (de) * 1985-10-22 1987-04-23 Autoflug Gmbh Sicherheitsgurtverschluss
WO1988006012A1 (fr) * 1987-02-10 1988-08-25 Autoliv Development Aktiebolag Boucle de ceinture de securite

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0402839A2 (fr) * 1989-06-14 1990-12-19 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Dispositif à boucler
EP0402839A3 (fr) * 1989-06-14 1991-03-27 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Dispositif à boucler
US5054171A (en) * 1989-06-14 1991-10-08 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Buckle device
FR2659919A1 (fr) * 1990-03-26 1991-09-27 Takata Corp Boucle pour ceinture de securite d'un vehicule.
EP0485656A1 (fr) * 1990-11-15 1992-05-20 TRW Occupant Restraint Systems GmbH Fermeture pour ceinture de sécurité de véhicules automobiles
DE4305179A1 (fr) * 1992-02-19 1993-08-26 Takata Corp
FR2687965A1 (fr) * 1992-02-19 1993-09-03 Takata Corp Dispositif a boucle pour ceinture de securite.
DE9202528U1 (de) * 1992-02-27 1992-04-16 Autoliv Development AB, Vårgårda Sicherheitsgurtschloß mit Verriegelungssperre
EP0559403A1 (fr) * 1992-03-05 1993-09-08 Alliedsignal Limited Boucle pour ceinture de siège
EP0577073A1 (fr) * 1992-06-30 1994-01-05 TAKATA (EUROPE) VEHICLE, SAFETY TECHNOLOGY GmbH Procédé pour bloquer le bouton de déverrouillage, respectivement le mécanisme de verrouillage d'une boucle de ceinture de sécurité de véhicule et système de ceinture de sécurité mettant en oeuvre ce procédé
WO1998010673A1 (fr) * 1996-09-11 1998-03-19 Breed Automotive Technology, Inc. Boucle destinee a etre utilisee avec un pretensionneur
US5742987A (en) * 1996-09-11 1998-04-28 Alliedsignal Inc. Buckle for use with a pretensioner
US6205628B1 (en) * 1997-02-17 2001-03-27 Breed Automotive Technology, Inc. Buckle
WO1998038882A1 (fr) * 1997-02-17 1998-09-11 Breed Automotive Technology, Inc. Boucle
GB2322158A (en) * 1997-02-17 1998-08-19 Alliedsignal Ltd Vehicle seat belt buckle
GB2322158B (en) * 1997-02-17 2001-09-26 Alliedsignal Ltd Buckle
EP1093339A1 (fr) * 1998-06-18 2001-04-25 Breed Automotive Technology, Inc. Boucle pour ceinture de securite utilisee avec un pretendeur
EP1093339A4 (fr) * 1998-06-18 2007-01-10 Key Safety Systems Inc Boucle pour ceinture de securite utilisee avec un pretendeur
US7124481B2 (en) 1999-08-13 2006-10-24 Ashimori Industry Co. Ltd. Buckle device
EP1219197A4 (fr) * 1999-08-13 2006-03-08 Ashimori Ind Co Ltd Dispositif pour boucle
EP1219197A1 (fr) * 1999-08-13 2002-07-03 Ashimori Industry Co., Ltd. Dispositif pour boucle
US6539595B1 (en) 2001-06-29 2003-04-01 Charles E. Benedict Non-inertial release safety restraint belt buckle system
EP1597983A1 (fr) * 2004-05-18 2005-11-23 Takata Corporation Boucle et dispositif de ceinture de sécurité employant une telle boucle
US7240407B2 (en) 2004-05-18 2007-07-10 Takata Corporation Seat belt apparatus and buckle
US7370393B2 (en) 2004-09-20 2008-05-13 Delphi Technologies, Inc. Seat belt buckle for use with pretensioner
US7543363B2 (en) 2005-05-26 2009-06-09 Delphi Technologies, Inc. Seat belt buckle for use with pretensioner
WO2011052415A1 (fr) * 2009-10-28 2011-05-05 Ashimori Industry Co., Ltd. Dispositif de boucle
JP2011115559A (ja) * 2009-10-28 2011-06-16 Ashimori Industry Co Ltd バックル装置
CN102595954A (zh) * 2009-10-28 2012-07-18 芦森工业株式会社 插扣装置
US8650726B2 (en) 2009-10-28 2014-02-18 Ashimori Industry Co., Ltd. Buckle device
CN102595954B (zh) * 2009-10-28 2014-12-31 芦森工业株式会社 插扣装置

Also Published As

Publication number Publication date
DE68903326T2 (de) 1993-03-11
GB8826115D0 (en) 1988-12-14
EP0368277B1 (fr) 1992-10-28
GB2227513B (en) 1993-02-10
DE68903326D1 (de) 1992-12-03
GB2227513A (en) 1990-08-01

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