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EP0436294B1 - Boucle pour ceinture de sécurité - Google Patents

Boucle pour ceinture de sécurité Download PDF

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Publication number
EP0436294B1
EP0436294B1 EP19900312773 EP90312773A EP0436294B1 EP 0436294 B1 EP0436294 B1 EP 0436294B1 EP 19900312773 EP19900312773 EP 19900312773 EP 90312773 A EP90312773 A EP 90312773A EP 0436294 B1 EP0436294 B1 EP 0436294B1
Authority
EP
European Patent Office
Prior art keywords
latching
buckle
formation
tongue
tongues
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.)
Expired - Lifetime
Application number
EP19900312773
Other languages
German (de)
English (en)
Other versions
EP0436294A1 (fr
Inventor
David William Burleigh
Waldemar Czernakowski
Christian Stysch
Hermann Wetter
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.)
Britax Roemer Kindersicherheit GmbH
Britax Excelsior Ltd
Original Assignee
Britax Roemer Kindersicherheit GmbH
Britax Excelsior Ltd
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 Britax Roemer Kindersicherheit GmbH, Britax Excelsior Ltd filed Critical Britax Roemer Kindersicherheit GmbH
Publication of EP0436294A1 publication Critical patent/EP0436294A1/fr
Application granted granted Critical
Publication of EP0436294B1 publication Critical patent/EP0436294B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A44B11/2546—Details
    • A44B11/2549—Fastening of other buckle elements to the main buckle
    • 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
    • A44B11/2511—Safety buckles actuated by a push-button acting perpendicularly to the main plane of the buckle, e.g. placed on the front face of the buckle
    • 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
    • A44B11/2546—Details
    • A44B11/2561—Tongue elements

Definitions

  • This invention relates to a buckle for a seat belt, comprising a buckle housing and two tongues, the buckle housing containing a latching mechanism having a latching formation for each tongue.
  • US-A-3523342 discloses a buckle of this type in which the latching formations are arranged for angular movement about respective spaced mutually parallel pivot axes between locking positions in which they engage with respective latch-engaging surfaces on the tongues to prevent removal of the tongues from the buckle housing and a release position in which the tongues are removable from the buckle housing.
  • the latching formations are shaped so that a force applied to a tongue in a direction to remove it from the buckle housing tends to cause displacement of the corresponding latching formation from its locking position to its release position.
  • EP-A-0289762 discloses a buckle of this type in which the latching formations are arranged for angular movement between a locking position in which they confront one another and the two tongues are retained therebetween in the buckle housing, and a release position in which the tongue is removable from the buckle housing.
  • US-A-3648333 discloses a buckle having a single tongue, in which the latching formations are arranged for angular movement about respective spaced mutually parallel pivot axes between locking positions in which they engage with respective latch-engaging surfaces on the tongue to prevent removal of the tongue from the buckle housing and a release position in which the tongue is removable from the buckle housing.
  • Blocking means are manually movable between a release position and a blocking position in which movement of the latching formations from their locked positions to their release positions is obstructed.
  • Each latching formation is arranged so that, when in its release position, it prevents movement of the blocking means into its blocking position.
  • the invention provides a buckle for a seat belt, comprising a buckle housing and two tongues, the buckle housing containing a latching mechanism having a latching formation for each tongue, the latching formations being arranged for angular movement about respective spaced mutually parallel pivot axes between locking positions in which they engage with respective latch-engaging surfaces on the tongues to prevent removal of the tongues from the buckle housing and a release position in which the tongues are removable from the buckle housing, blocking means being manually movable between a blocking position in which it obstructs movement of the latching formations from their locked positions to their release positions and a release position in which the latching formations are free to move between their locking positions and their release positions, each latching formation being shaped so that a force applied to a tongue in a direction to remove it from the buckle housing tends to cause displacement of the corresponding latching formation from its locking position to its release position, and each latching formation being arranged so that, when in its release position, it prevents movement of the blocking means into its blocking position.
  • This arrangement prevents the buckle being fastened with only one tongue in place.
  • each latching formation includes an ejector formation shaped to engage with its respective tongue so that movement of the latching formation from its locking position to its release position ejects the tongue, and insertion of the tongue moves the latching formation from its release position to its locked position.
  • each latching formation comprises a latching lever mounted with its pivot axis at an intermediate position along its length, one end of each latching lever being arranged to engage with the corresponding tongue and the other end of each latching lever being arranged to engage with the blocking means.
  • the buckle comprises a buckle housing 10 and two tongues 12 and 14, having respective slots 16, 18 and 20 whereby they may be connected to respective straps (not shown) of a seat belt system.
  • the housing 10 is formed in two parts 22 and 24 for ease of assembly.
  • the two parts 22 and 24 are shown as integral with one another.
  • the portions of the tongues 12 and 14 which are insertable into the housing 10 have respective hook formations with latch-engaging surfaces 26 and 28 and ejector-engaging surfaces 30 and 32.
  • the upper tongue 18 (as viewed in Figure 1) has a peg 34 which can be inserted into a corresponding recess 36 in the other tongue 14.
  • the buckle housing 10 has two openings 34 and 36 for receiving the tongues 12 and 14 respectively.
  • the openings 34 and 36 are separated by a central partition 38, behind which are located a pair of latching levers 40 and 42.
  • these latching levers 40 and 42 have pivot axes formed by respective upper stub axles 44, 46 and lower stub axles 48, 50 which are journalled in respective recesses in the housing 10.
  • the ends of the latching levers 40 and 42 nearer to the openings 34 and 36 are of substantially the same thickness as the adjacent parts of the tongues 12 and 14 and carry hook formations 52 and 54 with surfaces shaped to engage with the latch-engaging surfaces 26 and 28 of the tongues 12 and 14 at locations offset from the respective stub axles 44, 46 so that a force applied to either tongue 12, 14, in a direction to remove it from the buckle housing 10, tends to cause displacement of the corresponding latching lever 40, 42 towards its release position.
  • the latching levers 40 and 42 taper towards end portions 56 and 58 which are bent outwardly to a small extent, as can be seen in Figure 1.
  • each latching lever 40, 42 On its outer edge, each latching lever 40, 42 has a respective flange 60, 62 with an ejector surface 64, 66 at the end nearer to the openings 34 and 36 shaped so as to be engagable with the ejector-engaging surfaces 30 and 32 on the tongues 12 and 14.
  • the left hand end of the latching levers 40 and 42 are biassed apart by a compression spring 68 so that the formations 52 and 54 are clear of the openings 34 and 36.
  • a push-button 70 is accommodated in an opening in the top of the housing 10 and hinged thereto along one edge 72 thereof.
  • Flanges 74 and 76 (Figure 5) on the sides of the push-button 70 prevent it from moving above the top surface of the housing 10.
  • the push-button 70 has a downwardly extending formation 78 ( Figure 2) which carries a blocking bar 80 extending under the ends 56 and 58 of the latching levers 40 and 42.
  • the blocking bar 80 has a central recess 82 in its upper surface (see Figures 3 and 5).
  • the leaf spring 84 is then free to displace the blocking bar 80 and, with it, the push-button 70 upwardly, as shown in Figure 11 so that the ends 56 and 58 of the latching levers 40 and 42 are prevented from moving apart by the side walls of the recess 82.
  • the tongues 12 and 14 are then held in the buckle housing by engagement of their latching surfaces 26 and 28 with the hook formations 52 and 54 on the latching levers 40 and 42 as shown in Figure 6.
  • the blocking bar 80 is moved clear of the ends 56 and 58 of the latching levers 40 and 42 which are therefore free to return to the position illustrated in Figure 1 under the influence of the spring 68. Abutment of the ejector surfaces 64 and 66 on the flanges 60 and 62 with the ejector-engaging surfaces 30 and 32 on the tongues 12 and 14 causes the latter to be ejected from the housing 10. If movement of the latching levers 40 and 42 is impeded to such an extent that the force exerted by the spring 68 is insufficient, disengagement can be initiated by a force applied to either tongue 12, 14, in a direction to remove it from the buckle housing 10, as described above.
  • the buckle illustrated in the drawings requires the two tongues 12 and 14 to be inserted in mutually parallel directions.
  • the mechanism can be modified to allow the two tongues to be inserted in non-parallel directions, for example, at right angles to one another.
  • the latching levers are bent in the region of their pivots so that the ends 56 and 58 which engage with the blocking member 80 are set at a different angle the hook formations 50, 52 and the ejector surfaces 64 and 66.
  • FIG 12 illustrates an alternative embodiment, in which the buckle comprises a buckle housing 90 and two tongues 92 and 94, having respective slots 96, 98 and 100 whereby they may be connected to respective straps (not shown) of a seat belt system.
  • the tongues 92 and 94 differ from the tongues 12 and 14 of the embodiment illustrated in Figures 1 to 11 in that their hook formations 102 and 104 face outwardly and the buckle housing 90 has a single opening 106 through which both tongues can be inserted simultaneously.
  • a pair of latching levers 108 and 110 mounted on respective pivot axles 112 and 114, have inwardly facing hook formations 116, 118 shaped to embrace the outwardly facing hook formations 102 and 104 of the tongues 92 and 94.
  • a push-button (not shown), similar to the push-button 70 carries a blocking bar which differs from the blocking bar 80 of Figures 1 to 11 in that the central recess 82 therein is replaced by a central projection 120 which engages between ends 122 and 124 of the latching levers 106 and 108 to hold them in their engaged position as illustrated in Figure 12.
  • the operation of the buckle shown in Figure 12 is analogous to that of the buckle shown in Figures 1 to 11.

Landscapes

  • Automotive Seat Belt Assembly (AREA)
  • Buckles (AREA)

Claims (5)

  1. Une boucle pour ceinture de sécurité comprenant un boîtier de boucle (10, 90) et deux languettes (12, 14, 92, 94), le boîtier de boucle (10, 90) contenant un mécanisme de verrouillage présentant une formation de verrouillage (40, 42, 108, 110) pour chaque languette (12, 14, 92, 94), les formations de verrouillage (40, 42, 108, 110) étant agencées en vue d'un déplacement angulaire, autour d'axes de pivot respectifs parallèles espacés entre eux (44, 46, 112, 114), entre des positions de verrouillage dans lesquelles elles sont en prise avec des surfaces respectives de prise de verrouillage (26, 28, 102, 104) sur les languettes (12, 14, 92, 94) pour empêcher l'enlèvement des languettes (12, 14, 92, 94) hors du boîtier de boucle (10, 90) et une position de libération dans laquelle les languettes (12, 14, 92, 94) peuvent être enlevées du boîtier (10, 90) de boucle, un moyen de blocage (80) étant déplaçable manuellement entre une position de blocage dans laquelle il empêche un déplacement des formations de verrouillage (40, 42, 108, 110) depuis leur position verrouillée vers leur position de libération et une position de libération dans laquelle les formations de verrouillage (40, 42, 108, 110) sont libres de se déplacer entre leurs positions de verrouillage et leurs positions de libération, chaque formation de verrouillage (40, 42, 108, 110) étant configurée d'une manière telle qu'une force appliquée à une languette (12, 14, 92, 94) dans une direction tendant à l'enlever du boîtier (10, 90) de boucle tend à provoquer un déplacement de la formation de verrouillage correspondante (40, 42, 108, 110) depuis sa position de verrouillage vers sa position de libération, et chaque formation de verrouillage (40, 42, 108, 110) étant agencée d'une manière telle qu'elle empêche un déplacement du moyen de blocage (80) vers sa position de blocage, lorsqu'elle est dans sa position de libération.
  2. Une boucle selon la revendication 1, dans laquelle les formations de verrouillage (40, 42, 108, 110) sont sollicitées vers leurs positions de libération par un ressort (68) et chaque formation de verrouillage (40, 42, 108, 110) inclut une formation d'éjecteur (64, 66) configurée de façon à venir en prise avec sa languette respective (12, 14, 92, 94) d'une manière telle qu'un déplacement de la formation de verrouillage (40, 42, 108, 110) depuis sa position de verrouillage vers sa position de libération éjecte la languette, et qu'une insertion de la languette (12, 14, 92, 94) déplace la formation de verrouillage (40, 42, 108, 110) de sa position de libération vers sa position verrouillée.
  3. Une boucle selon la revendication 1 ou 2, dans laquelle chaque formation de verrouillage comprend un levier de verrouillage (40, 42, 108, 110), monté de manière que son axe de pivotement (44, 46, 112, 114) se trouve à une position intermédiaire sur sa longueur, une extrémité (52, 54) de chaque levier de verrouillage (40, 42, 108, 110) étant agencée pour venir en prise avec la languette correspondante (12, 14, 92, 94) et l'autre extrémité (56, 58) de chaque levier de verrouillage (40, 42, 108, 110) étant agencée pour venir en prise avec le moyen de blocage (80).
  4. Une boucle selon la revendication 3, dans laquelle chaque levier de verrouillage (40, 42) porte une formation en crochet tournée vers l'extérieur (52, 54) et chaque languette (12, 14, 92, 94) vient en prise entre un levier respectif de verrouillage (40, 42) et une partie respective du boîtier (10).
  5. Une boucle selon la revendication 3 dans laquelle chaque levier de verrouillage (108, 110) porte une formation en crochet tournée vers l'intérieur (116, 118) et les languettes (92, 94) viennent en prise entre les deux leviers de verrouillage (108, 110).
EP19900312773 1989-12-01 1990-11-23 Boucle pour ceinture de sécurité Expired - Lifetime EP0436294B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8927190 1989-12-01
GB898927190A GB8927190D0 (en) 1989-12-01 1989-12-01 Buckle for seat belt

Publications (2)

Publication Number Publication Date
EP0436294A1 EP0436294A1 (fr) 1991-07-10
EP0436294B1 true EP0436294B1 (fr) 1993-08-25

Family

ID=10667261

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900312773 Expired - Lifetime EP0436294B1 (fr) 1989-12-01 1990-11-23 Boucle pour ceinture de sécurité

Country Status (4)

Country Link
EP (1) EP0436294B1 (fr)
AU (1) AU623294B2 (fr)
DE (1) DE69002929T2 (fr)
GB (1) GB8927190D0 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3523342A (en) * 1968-01-22 1970-08-11 John P Spires Seat belt buckle latch
US3605210A (en) * 1969-04-21 1971-09-20 Jim Robbing Seat Belt Co Side locking seat belt buckle
US3631571A (en) * 1969-10-20 1972-01-04 Robbins Seat Belt Co Seat belt buckle assembly
AU1771270A (en) * 1970-07-16 1972-01-20 Cooldrive Consolidated Industries Proprietary Limited Buckles for safety belts
SU1271777A1 (ru) * 1983-10-03 1986-11-23 Производственное Объединение "Норма" Замок дл ремн безопасности транспортного средства

Also Published As

Publication number Publication date
DE69002929T2 (de) 1994-01-13
GB8927190D0 (en) 1990-01-31
EP0436294A1 (fr) 1991-07-10
DE69002929D1 (de) 1993-09-30
AU6698890A (en) 1991-06-20
AU623294B2 (en) 1992-05-07

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