EP0231336B1 - Mecanisme de serrure - Google Patents

Mecanisme de serrure Download PDF

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Publication number
EP0231336B1
EP0231336B1 EP86904971A EP86904971A EP0231336B1 EP 0231336 B1 EP0231336 B1 EP 0231336B1 EP 86904971 A EP86904971 A EP 86904971A EP 86904971 A EP86904971 A EP 86904971A EP 0231336 B1 EP0231336 B1 EP 0231336B1
Authority
EP
European Patent Office
Prior art keywords
elements
lock mechanism
latch
lock
latch elements
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
EP86904971A
Other languages
German (de)
English (en)
Other versions
EP0231336A1 (fr
Inventor
Per-Olof Weman
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.)
Autoliv Development AB
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 EP0231336A1 publication Critical patent/EP0231336A1/fr
Application granted granted Critical
Publication of EP0231336B1 publication Critical patent/EP0231336B1/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
    • A44B11/2507—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 lock mechanism having two separate latch elements which are displaceable between a disengaged position and an engaged position on either side of a partition line between the elements.
  • lock mechanisms are used in order to protect human life or to secure or retain persons or objects in such a manner that they can be released rapidly and easily when required.
  • Such lock mechanisms are used e.g. in automotive safety belts and other safety belts but the use of these lock mechanisms is of interest also in many other fields. Even if the invention has been developed particularly in connection with automotive safety belts it is not limited to this narrow field; the invention can be applied more generally in different technical fields where the same problem is encountered as in connection with automotive safety belts.
  • the lock mechanism of an automotive safety belt in the first place must provide a locking of the belt which is so safe that the lock can fulfil the vital function thereof in a reliable manner but at the same time it is required that the lock mechanism can be operated and disengaged without major effort, e.g. in order to release rapidly the user of the automotive safety belt after an accident.
  • the lock mechanism for the purpose mentioned has obtained the characteristics according to claim 1.
  • FIGS. 1 and 2 there is shown a lock housing 1 having a primary latch member 2 for engagement with a lock tongue 8.
  • two secondary latch elements 32, 33 which are displaceably guided in a slot 3 in the lock housing and are displaceable towards and away from each other. They are spring-biased to the position shown in FIGS. 1 and 2 wherein they are positioned over an engagement surface 2' of the latch member 2. In this position the latch elements prevent the latch member 2 from disengaging the locktongue.
  • a push button 5 can be actuated against the bias of a spring 6 to displace the latch elements to the disengaged position, FIG. 3, in which the latch member 2 can be pivoted upwards to disengage the lock tongue.
  • An ejector 7 which is biased by means of a compression spring 9, is provided to eject the lock tongue when disengaged.
  • the lock mechanism is also in the latching position or engaged position, but the two elements 32 and 33 are displaced to the left, and then the element 33 maintains the primary latch member 2 in the engaged position.
  • the elements are displaced to the right, and then the element 32 maintains the primary latch member in the engaged position.
  • the lock mechanism can be brought to the disengaged position only if the latch elements simultaneously are moved apart completely. At rectilinear accelerations or retardations the lock mechanism will maintain the engaged position, because if one element moves away from the primary latch member 2, the other element will still be in the latching position. If it is assumed that the primary latch member 2 is latched by means of both elements 32 and 33, FIG. 2, and that the lock suddenly starts to rotate about an axis which extends perpendicularly to the elements and therebetween, or about an axis which extends between the elements and is substantially parallel thereto, it may occur that the elements are moved apart by the centrifugal acceleration.
  • the elements 32 and 33 according to the invention are shaped such that the centre of gravity of the element 32 is located in the area of the element 33, i.e. at that side of the partition line between the elements, which is opposite to the element 32, and the centre of gravity of the element 33 is located in an analogous manner in the area of the element 32.
  • the element 32 is constructed as part of a frame 320 while the element 33 is constructed as part of a T-piece 330.
  • the centres of gravity of the frame and the T-piece thus are reversed in relation to the partition line between the elements 32 and 33.
  • the primary latch member 2 has a recess 20, FIG. 6, for the stem of the T-piece in order that said stem cannot lock the primary latch member.
  • this member has two projecting shoulders 21, the two latch elements 32 and 33 co-operating with said shoulders.
  • the latch element 2 has a lock detent 22 to engage the lock tongue, and two arms 23 for the pivotal mounting in the lock housing 1.
  • the element 32 In order to disengage the primary latch member 2 the element 32 must be displaced to the left as seen in FIGS. 1 and 2, i.e. in the opposite direction of the push button 5. This can be achieved by the push button 5 being provided with arms 51 one at each side of the lock, but only one arm is shown in FIG. 1, these arms providing the necessary movement of the element 32, i.e. the frame 320, over rockers 11. Between the elements 32 and 33 a compression spring 12 is provided which orientates the two elements in relation to each other, but which does not determine the level at which the lock mechanism opens by itself at an acceleration, if any, as in case of prior art lock mechanisms.
  • the rockers 11 comprise autonomous bodies sensitive to rotation, but can actuate only one of the elements 32 and 33, and thus the security of the lock mechanism is not jeopardized as a consequence thereof.
  • the risk of the latch member 2 being unintentionally disengaged is exceedingly small, because the overlapping distance is large in relation to the gap in the disengaged position of the other element and corresponds to the thickness of the shoulders 21.
  • the overlapping distance can be increased by angling the shoulders in the manner shown in FIG. 7 wherein the overlapping distance is indicated at 1.
  • the two latch elements 32 and 33 are provided as primary latch members to engage directly the lock tongue 8, the latch elements forming hooks 32' and 33', respectively, to engage recesses 8' at the edges of the lock tongue.
  • the latch elements are displaced to engage and disengage the recesses transversely of the lock tongue as indicated by a double-arrow in FIG. 8.
  • the partition line between the hooks of the latch elements is indicated by a dot-and-dash line, and as will be seen, each latch element has the hook and the centre of gravity, indicated at X, at opposite sides of the partition line.

Landscapes

  • Lock And Its Accessories (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Buckles (AREA)

Abstract

Mécanisme de serrure muni de deux éléments de loquet séparés (32, 33) pouvant être déplacés entre une position dégagée et une position engagée de part et d'autre d'une ligne de séparation entre les éléments. Le centre de gravité de chaque élément de loquet se trouve du côté de la ligne de séparation des éléments de loquet qui est opposé à celui de l'élément concerné.

Claims (5)

1. Mécanisme de blocage comprenant deux éléments séparés de verrou (32, 33) qui peuvent être déplacés entre une position désengagée et une position engagée à l'un ou l'autre côté d'une ligne de séparation entre les éléments, caractérisé en ce que chaque élément de verrou (32, 33) peut être déplacé entre les positions désengagée et engagée à un côté de la ligne de séparation entre les éléments de verrou, et en ce que chaque élément de verrou (32, 33) a son centre de gravité à l'autre côté de la ligne de séparation entre les éléments de verrou.
2. Mécanisme de blocage selon la revendication 1, caractérisé en ce que les éléments de verrou (32, 33) sont mutuellement engagés dans la position engagée.
3. Mécanisme de blocage selon la revendication 1 ou 2, caractérisé en ce que les éléments de verrou (32, 33) peuvent être déplacés pour être rapprochés l'un de l'autre ou éloignés l'un de l'autre dans un plan.
4. Mécanisme de blocage selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les éléments de verrou (32, 33) sont sollicités par ressort vers la position engagée.
5. Mécanisme de blocage selon l'une quelcon- quer des revendications 1 à 4, caractérisé en ce qu'un élément de verrou (32) fait partie d'un châssis (320) et l'autre élément fait partie d'une pièce en T (330), dont la barre transversale est située à l'intérieur du châssis.
EP86904971A 1985-08-02 1986-08-01 Mecanisme de serrure Expired - Lifetime EP0231336B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8503683 1985-08-02
SE8503683A SE448595B (sv) 1985-08-02 1985-08-02 Lasmekanism for bilbelte med tva separata sperrelement

Publications (2)

Publication Number Publication Date
EP0231336A1 EP0231336A1 (fr) 1987-08-12
EP0231336B1 true EP0231336B1 (fr) 1991-01-16

Family

ID=20361015

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86904971A Expired - Lifetime EP0231336B1 (fr) 1985-08-02 1986-08-01 Mecanisme de serrure

Country Status (4)

Country Link
EP (1) EP0231336B1 (fr)
DE (1) DE3676993D1 (fr)
SE (1) SE448595B (fr)
WO (1) WO1987000736A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2195140B (en) * 1986-09-16 1990-09-26 Autoliv Dev Improvements in or relating to a seat belt buckle
GB2202264B (en) * 1987-02-10 1991-04-24 Autoliv Dev Improvements in or relating to a safety belt buckle
DE3835508A1 (de) * 1988-10-19 1990-05-03 Autoliv Kolb Gmbh & Co Schloss fuer ein kraftfahrzeug-sicherheitsgurtsystem
GB8904205D0 (en) * 1989-02-23 1989-04-05 Bsrd Ltd Seat belt buckle
US5163207A (en) * 1989-03-15 1992-11-17 Autoflug Gmbh & Co. Fahrzeugtechnik Shock proof buckle for safety belts
DE4009272A1 (de) * 1990-03-22 1991-09-26 Trw Repa Gmbh Gurtschloss fuer ein sicherheitsgurtsystem, das mit einer rueckstrammeinrichtung versehen ist
BR9305664A (pt) * 1992-10-09 1996-11-26 Autoliv Dev Fivela de cinto de segurança

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
none *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
SE448595B (sv) 1987-03-09
SE8503683L (fr) 1987-02-03
WO1987000736A1 (fr) 1987-02-12
EP0231336A1 (fr) 1987-08-12
SE8503683D0 (sv) 1985-08-02
DE3676993D1 (de) 1991-02-21

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