EP0452464B1 - Sicherheitsgurtverschluss - Google Patents

Sicherheitsgurtverschluss Download PDF

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Publication number
EP0452464B1
EP0452464B1 EP19900916769 EP90916769A EP0452464B1 EP 0452464 B1 EP0452464 B1 EP 0452464B1 EP 19900916769 EP19900916769 EP 19900916769 EP 90916769 A EP90916769 A EP 90916769A EP 0452464 B1 EP0452464 B1 EP 0452464B1
Authority
EP
European Patent Office
Prior art keywords
locking member
slider
latch plate
bar
seat belt
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
EP19900916769
Other languages
English (en)
French (fr)
Other versions
EP0452464A1 (de
Inventor
Ron Clarke
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.)
European Components Co Ltd
Original Assignee
European Components Co 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 European Components Co Ltd filed Critical European Components Co Ltd
Publication of EP0452464A1 publication Critical patent/EP0452464A1/de
Application granted granted Critical
Publication of EP0452464B1 publication Critical patent/EP0452464B1/de
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
    • A44B11/2507—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 seat belt buckles for seat belts in motor vehicles.
  • One form of such seat belt buckle involves a latch plate having an aperture therein, engageable on one part of the seat belt, and a buckle having a rigid frame including a base having an opening therein and upstanding side walls adapted to guide the latch plate longitudinally of the frame.
  • the latch plate can be inserted against the action of a spring loaded ejector and when in the fully inserted position a locking member is pivoted to a lower latching position in which a locking element engages in the aperture in the latch plate.
  • a push button is used to release the locking member which pivots back to an unlatched position.
  • GB-2010955 discloses a seat belt buckle adapted to releasably engage a latch plate having an aperture therein, said buckle comprising a rigid frame including a base having an opening therein, upstanding side walls adapted to guide the latch plate longitudinally of the frame, a bar extending transversely of the frame between said side walls, said bar being spaced above the base, a locking member pivotally mounted on the frame and pivotal between a lower latched position and an upper unlatched position, said locking member carrying a downwardly projecting locking element engageable in said aperture in the latch plate to retain the latch plate in place and passing into said opening, a pair of wings extending laterally from said locking member and engaging in said side walls to pivotally and resiliently mount the locking member for movement between its upper and lower positions.
  • seat belt buckles should have an easy and effective latching of the latch plate and should easily release the latch plate by operation of the push button. It is most important to retain the latch plate in a latch position in the buckle even when the latch plate and buckle are subject to a very heavy impact load.
  • the present invention is characterised in that a slider is slidable longitudinally of the locking member between a first position in which it is located under said bar, to retain the locking member in the lower latched position and a second position in which it allows said locking member to pivot to its upper unlatched position, in that a slider spring urges the slider towards its first position; in that a push button is provided to push the slider to its second position, in that said slider is resiliently engaged by said slider spring against the rear of said bar to retain the locking member in its upper unlatched position, in that said wings are capable of elastic flexing, upon axial loading of said locking member by said latch plate, and in that at least one stop member extends laterally from said member, said at least one stop member engaging abutments on said rigid frame to prevent flexing of said wings beyond their elastic limit.
  • the provision of the bar extending over the slider assists in the withstanding of heavy loads and prevents inadvertent release of the buckle. More importantly, however, the provision of the stop member or members prevents excessive flexing of the wings, which acts as the pivot for the locking member, so that the wings never are distorted beyond their elastic limit.
  • each stop member may take a number of forms but advantageously each stop member extends laterally from the locking member forwardly from the wings and may comprise a pair of arms engaging, at least in the lower latching position of the locking member, against abutments in the side walls.
  • these abutments are in the form of open-topped notches in the upper edges of the side walls into which the arms move in the lower latching position.
  • the locking element in the lower latching position of the locking member has its forward edge spaced from the forward edge of said opening by a given distance under normal conditions.
  • said at least one stop member has its forward edge spaced from its associated abutment by a spacing less than said given distance, whereby the load bearing capacity of the or each stop member and its associated abutment are enhanced by engagement of the forward edge of the locking element with the rearward edge of the opening.
  • the rearward edge of said bar and the forward edge of said slider are cooperatingly chamfered to retain the locking member in its upper unlatched position when said forward and rearward edges are inter-engaged by said slider spring.
  • the buckle includes a rigid frame 10 having a base plate 12 having two upstanding side walls 14 extending from each side edge thereof.
  • a bar 16 extends between the side walls 14 and is spaced from and parallel to the base plate 12.
  • An opening 20 is formed in the base plate 12 and is provided with a front edge 22 ( Figure 2).
  • a locking member 24 Pivotally mounted between the side walls 14 is a locking member 24, which includes a forwardly extending body 26 and downwardly extending legs 28.
  • the body is provided with two laterally extending wings 30 engaging in rear notches 32 in the side walls 14. Extending parallel to these wings 30 are arms 34 which can, in the lower latched position as illustrated in Figure 1, engage in forward notches 36 in the side wall.
  • a locking element 38 At the forward end of the body 26 of the locking member is a locking element 38 which, in the latched position, passes through an aperture 40 in a latch plate 42 to retain the latch plate in place.
  • longitudinally slidable on the locking member 24 is a slider 44 having a chamfered leading edge 46. The slider is urged towards the front (the left in the Figures) by a slider spring 48 engaged over a projection 50 on the body 26 of the locking member 24.
  • a push button 52 Longitudinally slidable on the side walls 14 is a push button 52 which has rearward projections 54 engaging forward projections 56 on an ejector 58 longitudinally slidable in the opening 20 in the base plate 12, and urged to the forward position by an ejector spring 60.
  • a latch plate 42 In use, starting from the position illustrated in Figure 2, a latch plate 42 is inserted in the guide channel formed by the base plate 12 and the side walls 14, it causes the ejector 58 to move rearwardly, that is to the right, against the action of its spring 60. This movement continues until the ejector is moved so far rearwards that it engages on the bottom of the leg 28 of the locking member 24. The resulting couple rotates the locking member/slider system causing the slider 44 to move down and return under the bar 16 to the position illustrated in Figure 1. When the plate 42 is unloaded, the aperture 40 therein abuts the locking element 38 which retains the latch plate 42 in place so that the buckle cannot unlatch.
  • both the wings and the main body of the locking member recover elastically to restore the clearances 64, 66 ( Figure 3) between the locking member 34 and the frame sufficient to allow the front face 70 of the locking element 38 to sweep past the frame edge 22, when the locking member is released to the unlatched position and in particular with the release preformed whilst specific test loads are being applied longitudinally through the latch plate.

Landscapes

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

Claims (7)

  1. Sicherheitsgurtschloß, das so ausgelegt ist, daß es lösbar mit einer Halteplatte (42) in Eingriff kommen kann, die in sich eine Öffnung (40) aufweist, wobei das Schloß einen starren Rahmen (10), der eine Grundplatte (12) beinhaltet, die in sich eine Öffnung (20) aufweist, nach oben stehende Seitenwände (14), die so ausgelegt sind, daß sie die Halteplatte in der Längsrichtung des Rahmens führen können, eine Stange (16), die sich quer zu dem Rahmen zwischen den Seitenwänden erstreckt, wobei die Stange oberhalb der Grundplatte mit Zwischenraum angeordnet ist, ein Verriegelungsglied (24), das schwenkbar an dem Rahmen angebracht ist und zwischen einer unteren Verriegelungsstellung und einer oberen Entriegelungsstellung verschwenkt werden kann, wobei das Verriegelungsglied (24) ein nach unten vorstehendes Verriegelungselement (38) trägt, das in die Öffnung in der Halteplatte (42) eingreifen kann, um die Halteplatte an Ort und Stelle halten zu können, und das in die Öffnung (20) wandert, ein Paar von Flügeln (30) umfaßt, die sich seitlich ausgehend von dem Verriegelungsglied erstrecken und in die Seitenwände eingreifen, um das Verriegelungsglied schwenkbar und elastisch zu lagern, damit es zwischen seinen oberen und unteren Stellungen bewegt werden kann, dadurch gekennzeichnet, daß ein Gleitstück (44) in der Längsrichtung des Verriegelungsglieds zwischen einer ersten Stellung, in der es sich unter der Stange (16) befindet, um das Verriegelungsglied in der unteren Verriegelungsstellung zu halten, und einer zweiten Stellung gleiten kann, in der das Verriegelungsglied in seine obere Entriegelungsstellung verschwenkt werden kann, daß eine Gleitstückfeder (48) das Gleitstück in Richtung auf seine erste Stellung treibt, daß eine Drucktaste (52) vorgesehen ist, um das Gleitstück in seine zweite Stellung zu drücken, daß die Gleitstückfeder federnd mit dem Gleitelement gegen die Rückseite der Stange in Eingriff kommt, um das Verriegelungsglied in seiner oberen Entriegelungsstellung zurückzuhalten, daß die Flügel (30) elastisch durchgebogen werden können, wenn das Verriegelungsglied von der Halteplatte (42) axial mit Last beaufschlagt wird, und daß sich zumindest ein Anschlagelement (34) seitlich ausgehend von dem Glied erstreckt, wobei das zumindest eine Anschlagelement in Widerlager (36) auf dem starren Rahmen eingreift, um ein Durchbiegen der Flügel über ihre Elastizitätsgrenze hinaus zu vermeiden.
  2. Sicherheitsgurtschloß nach Anspruch 1, dadurch gekennzeichnet, daß sich zumindest ein Anschlagelement (34) seitlich ausgehend von dem Verriegelungsglied nach vorne gerichtet vor den Flügeln (30) erstreckt.
  3. Sicherheitsgurtschloß nach Anspruch 2, dadurch gekennzeichnet, daß zumindest ein Anschlagelement (34) ein Paar von Armen umfaßt, die zumindest in der unteren Stellung des Verriegelungsglieds in die Widerlager (36) eingreifen, die in der Seitenwand vorgesehen sind.
  4. Sicherheitsgurtschloß nach Anspruch 3, dadurch gekennzeichnet, daß die Widerlager (36) die Form von Kerben in den oberen Kanten der Seitenwände aufweisen.
  5. Sicherheitsgurtschloß nach einem der vorhergehenden Ansprüche, bei dem die vordere Kante des Verriegelungselements (38) in der unteren Verriegelungsstellung des Verriegelungsglieds unter normalen Bedingungen von der vordere Kante der Öffnung (20) um eine vorbestimmte Entfernung beabstandet ist.
  6. Sicherheitsgurtschloß nach Anspruch 5, dadurch gekennzeichnet, daß die vordere Kante zumindest eines Anschlagelements (34) von ihrem zugehörigen Widerlager (36) um einen Abstand beabstandet ist, der geringer als die vorgegebene Entfernung ist, wodurch die Tragfähigkeit des oder jedes Anschlagelements (34) und seines zugehörigen Widerlagers (36) verbessert wird, indem die vordere Kante des Verriegelungselements (38) in die hintere Kante der Öffnung (20) eingreift.
  7. Sicherheitsgurtschloß nach einem der vorhergehenden Ansprüche, bei dem die hintere Kante (18) der Stange (16) und die vordere Kante (46) des Gleitstücks (44) kooperierend abgeschrägt sind, um das Verriegelungsglied in seiner oberen Entriegelungsstellung zu halten, wenn die vorderen und hinteren Kanten durch die Gleitstückfeder miteinander in Engriff stehen.
EP19900916769 1989-11-06 1990-11-02 Sicherheitsgurtverschluss Expired - Lifetime EP0452464B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8925036A GB2238074A (en) 1989-11-06 1989-11-06 Seat belt buckle.
GB8925036 1989-11-06

Publications (2)

Publication Number Publication Date
EP0452464A1 EP0452464A1 (de) 1991-10-23
EP0452464B1 true EP0452464B1 (de) 1994-02-16

Family

ID=10665816

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900916769 Expired - Lifetime EP0452464B1 (de) 1989-11-06 1990-11-02 Sicherheitsgurtverschluss

Country Status (6)

Country Link
EP (1) EP0452464B1 (de)
JP (1) JPH07112443B2 (de)
DE (1) DE69006720T2 (de)
ES (1) ES2051523T3 (de)
GB (1) GB2238074A (de)
WO (1) WO1991006231A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19744019B4 (de) * 1996-10-07 2009-05-07 Takata-Petri Ag Sicherheitsgurtschloß

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU1837825C (ru) * 1991-04-03 1993-08-30 Леонид Оскарович Тедер Замок дл ремн безопасности транспортного средства
GB2302705A (en) * 1995-06-28 1997-01-29 Europ Component Co Ltd Seat belt buckle
GB2313147B (en) * 1996-05-14 2000-08-23 Europ Component Co Ltd Seat belt buckle
GB2329214A (en) * 1997-09-10 1999-03-17 Europ Component Co Ltd Seat belt buckle

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2379995A2 (fr) * 1976-04-28 1978-09-08 Peugeot Aciers Et Outillage Boucle pour sangle de securite
US4064603A (en) * 1976-09-29 1977-12-27 Gateway Industries, Inc. Safety belt buckle
SE7812170L (sv) * 1977-12-07 1979-06-08 Klippan Nv Belteslas med lett frigorbar sperr
ATE8566T1 (de) * 1980-11-18 1984-08-15 Autoflug Gmbh Schnalle fuer einen sicherheitsgurt.
FR2509969A1 (fr) * 1981-07-27 1983-01-28 Klippan Nv Boucle de fermeture de ceinture de securite a loquet pivotant
SE451231B (sv) * 1982-12-23 1987-09-21 Autoliv Dev Lasanordning for sekerhetsselar i fordon
US4550474A (en) * 1983-11-21 1985-11-05 Gateway Industries, Inc. Safety belt buckle
GB2218457B (en) * 1988-05-11 1992-03-18 Gen Motors Corp Seat belt buckle.
GB2218458B (en) * 1988-05-11 1992-04-15 Gen Motors Corp Seat belt buckle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19744019B4 (de) * 1996-10-07 2009-05-07 Takata-Petri Ag Sicherheitsgurtschloß

Also Published As

Publication number Publication date
JPH04506922A (ja) 1992-12-03
JPH07112443B2 (ja) 1995-12-06
EP0452464A1 (de) 1991-10-23
DE69006720D1 (de) 1994-03-24
GB8925036D0 (en) 1989-12-28
WO1991006231A1 (en) 1991-05-16
GB2238074A (en) 1991-05-22
ES2051523T3 (es) 1994-06-16
DE69006720T2 (de) 1994-07-07

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