EP0968107A1 - Structural component consisting of a belt buckle, attachment hardware and a force limiter - Google Patents

Structural component consisting of a belt buckle, attachment hardware and a force limiter

Info

Publication number
EP0968107A1
EP0968107A1 EP98965280A EP98965280A EP0968107A1 EP 0968107 A1 EP0968107 A1 EP 0968107A1 EP 98965280 A EP98965280 A EP 98965280A EP 98965280 A EP98965280 A EP 98965280A EP 0968107 A1 EP0968107 A1 EP 0968107A1
Authority
EP
European Patent Office
Prior art keywords
belt buckle
fastening fitting
assembly according
wire rope
stop part
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.)
Withdrawn
Application number
EP98965280A
Other languages
German (de)
French (fr)
Inventor
Herbert Feile
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.)
TRW Occupant Restraint Systems GmbH
Original Assignee
TRW Occupant Restraint Systems GmbH
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 TRW Occupant Restraint Systems GmbH filed Critical TRW Occupant Restraint Systems GmbH
Publication of EP0968107A1 publication Critical patent/EP0968107A1/en
Withdrawn legal-status Critical Current

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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
    • B60R22/28—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices

Definitions

  • the invention relates to an assembly of a belt buckle for the tongue of a vehicle seat belt, a mounting bracket for the belt buckle and a force limiter between the buckle and the mounting bracket.
  • the stretching element consists of a plurality of annular stretching members which are connected in one piece and which are stretched between the belt buckle and the fastening fitting after a predetermined tensile load has been exceeded.
  • the resulting increase in length between the mounting bracket and the buckle limits the maximum force acting in the vehicle seat belt.
  • Projection-like limiting elements are arranged in the interior of the annular stretching elements, which come into abutment from a predetermined stretching and thus limit a further increase in the length of the stretching element.
  • a disadvantage of this known assembly is that the characteristic curve of length increase over effective tensile force cannot be set independently of the maximum tensile load, the transmission of which is required by the assembly. - 2 -
  • the invention provides an assembly of a belt buckle, a mounting bracket and a force limiter, in which the characteristic curve of length increase over effective tensile force can be adapted in any way to the respective requirements, without influencing the maximum allowable tensile load, which is between the buckle and the mounting bracket can be transferred.
  • the force limiter contains a traction means which is fixedly connected to the belt buckle and which is movable relative to the fastening fitting by a predetermined path, and a stretching element which is coupled to the belt buckle and the fastening fitting and can be stretched by exceeding a predetermined tensile force between the buckle and the mounting bracket.
  • the invention therefore provides, in addition to the stretching element, a separate traction means which serves to transmit a substantial part of the tensile forces acting between the belt buckle and the fastening fitting, at least in the fully extended state of the force limiter.
  • the stretching element can therefore be dimensioned independently of the maximum load capacity of the assembly.
  • the traction means consists of at least one wire rope, which is fixedly connected to the belt buckle and is displaceably guided on the fastening fitting, and that a stop part is attached to the end of the wire rope facing away from the belt buckle, which, after an adjustment of the wire rope, is relative to the fastening fitting comes into contact with the fastening fitting by the predetermined path. Since a wire rope is particularly well suited for the transmission of tensile loads and can also be used inexpensively, this design allows a module to be obtained with comparatively little effort, with which, despite the existing stretching element, particularly high loads - 3 -
  • two wire ropes are used, which are anchored to the frame of the belt buckle, and that the end of the stretching element facing the belt buckle is firmly pressed with the wire ropes.
  • the belt buckle can be safely positioned in the desired orientation in the vehicle interior without additional aids.
  • the production of the assembly requires a minimal effort with this design, since the wire cables only have to be inserted into the guide on the fastening fitting and then only the end of the stretching element facing the buckle has to be firmly pressed with the wire cables.
  • FIG. 1 is a front perspective view of an assembly according to the invention according to a first embodiment
  • FIG. 2 is a perspective rear view of an assembly according to the invention according to a second embodiment
  • FIG. 3 is a side view of a detail of the assembly shown in Figure 2;
  • FIG. 4 is a side view of a detail of an assembly according to a third embodiment. - 4 -
  • FIG. 1 is schematically shown an assembly according to a first embodiment of the invention.
  • the assembly includes a buckle 10 into which a tongue of a vehicle seat belt system can be inserted and which is coupled to a mounting bracket 12 which serves to attach the assembly to a vehicle (not shown).
  • the belt buckle 10 contains in its interior a load-bearing frame (not shown) into which the loads on the seat belt are transmitted when the tongue is inserted. With the load-bearing frame, two wire cables 14, 16 are firmly connected, onto which a stop part 18 is pressed at their end facing away from the buckle 10.
  • the mounting bracket 12 is provided with two guide tabs 20, 22 which grip around the wire cables 14, 16.
  • a stretching element 24 connects to the end of the fastening fitting 12 provided with the guide tabs 20, 22.
  • This consists of two annular, integrally connected stretching members 26, 28, between which, if desired, a predetermined breaking point 30 can be provided.
  • At the extension member 28 are two locking tabs 32, 34, which are firmly pressed with the wire cables 14, 16.
  • the two locking tabs 32, 34 are designed and pressed with the wire cables 14, 16 so that they can transmit a maximum tensile force from the wire cables into the stretching members 26, 28, which is greater than the force required to stretch the stretching members.
  • Fastening fitting 12 are used, only bent so far that they abut the wire cables 14, 16 with a slight pretension; in contrast to the locking tabs 32, 34, the tabs 20, 22 do not ensure that the wire cables 14, 16 are fixed on the fastening fitting 12, but only provide a predetermined frictional force when there is a relative movement between the wire cables 14, 16 and the fastening fitting 12. - 5 -
  • a damping sleeve 36 can be arranged on the end of the wire cables 14, 16 facing away from the buckle.
  • the first limit force is composed of the force required to stretch the stretching members 26, 28 and the force required to overcome the friction between the tabs 20, 22 and the wire cables 14, 16.
  • the stretching members 26, 28 are stretched because they are carried along by the wire cables 14, 16 via the tabs 32, 34, the wire cables 14, 16 through the tabs 20, 22 be pulled through.
  • the optionally provided damping sleeve 36 or the stop part 18 comes into contact with the tabs 20, 22, so that the increase in length is limited.
  • the tensile force reached at this point represents a second limit force.
  • the stretching members 26, 28 are stretched, and either the damping sleeve 36 or the stop part 18 lies against the tabs 20, 22. If the tensile load is increased further, there is no longer an increase in length.
  • the characteristic curve of increase in length over acting tensile force can be adjusted in almost any manner by the design of the stretching members 26, 28 and the pretensioning of the tabs 20, 22, without this influencing the maximum tensile force that can be transmitted between the belt buckle 10 and the fastening fitting 12. - 6 -
  • FIGS. A second embodiment of the invention is shown schematically in FIGS. This differs from the first embodiment by the use of three extension members 26, 28, 29 instead of two extension members and by the arrangement of the pulling cables 14, 16 in the area of the fastening fitting 12.
  • the pulling cables 14, 16 are attached to the fastening fitting 12 by 180 ° deflected so that the stop member 18 is again aligned towards the buckle. Due to the deflection, an adjustment of the wire cables 14, 16 relative to the fastening fitting 12 is opposed by a resistance force which is composed, on the one hand, of loop friction in the region of the fastening fitting 12 and, on the other hand, of the bending stiffness of the wire cables 14, 16.
  • the damping sleeve 36 is already at rest both on the stop member 18 and the mounting bracket 12; it dampens the relative movement between the wire cables 14, 16 and the fastening fitting 12 right from the start.
  • FIG. 1 A detail of a third embodiment is shown in FIG.
  • the third embodiment differs from the second embodiment apart from the lack of a damping sleeve in that the wire cables 14, 16 protrude beyond the stop part 18.
  • two tabs 38 are provided which engage around the wire cables 14, 16 in the same way as the tabs 20, 22.
  • they either serve only to guide the deflected section of the wire cables or, in addition, to provide a predetermined frictional force which causes a relative displacement between the wire cables 14, 16 and the fastening fitting 12 counteracts.

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

Abstract

A structural component consisting of a belt buckle (10) for the latch of a seat belt in a motor vehicle, attachment hardware (12) for the belt buckle (10) and a force limiter between the belt buckle (10) and the attachment hardware (12). The invention is characterized in that the force limiter contains a means of traction (14, 16) which is firmly connected to the belt buckle (10) and which can move in relation to the attachment hardware (12) along a given path, in addition to an extension element (23) which is coupled to the belt buckle (10) and attachment hardware and can be extended when a given traction force between the belt buckle (10) and the attachment hardware (12) is exceeded.

Description

Baugruppe aus einem Gurtschloß, einem Befestigungsbeschlag sowie einem Kraftbegrenzer Assembly of a belt buckle, a mounting bracket and a force limiter
Die Erfindung betrifft eine Baugruppe aus einem Gurtschloß für die Steckzunge eines Fahrzeug-Sicherheitsgurts, einem Befestigungsbeschlag für das Gurtschloß und einem Kraftbegrenzer zwischen dem Gurtschloß und dem Befestigungsbeschlag .The invention relates to an assembly of a belt buckle for the tongue of a vehicle seat belt, a mounting bracket for the belt buckle and a force limiter between the buckle and the mounting bracket.
Eine solche Baugruppe ist aus der deutschen Offenlegungsschrift 37 23 772 bekannt. Der Kraftbegrenzer wird bei dieser bekannten Baugruppe durch ein Streckelement gebildet, das einstückig mit dem Befestigungsbeschlag ausgebildet ist, der zur Befestigung des Gurtschlosses mit dem Fahrzeug dient, und das auf seinem vomSuch an assembly is known from German Offenlegungsschrift 37 23 772. The force limiter is formed in this known assembly by a stretching element, which is formed in one piece with the fastening fitting, which is used to fasten the belt buckle to the vehicle, and which on its from
Befestigungsbeschlag abgewandten Ende mit einer Haltelasche für das Gurtschloß versehen ist. Das Streckelement besteht aus mehreren einstückig miteinander verbundenen, ringförmigen Streckgliedern, die nach Überschreiten einer vorbestimmten Zugbelastung zwischen dem Gurtschloß und dem Befestigungsbeschlag gestreckt werden. Die sich daraus ergebende Längenzunahme zwischen dem Befestigungsbeschlag und dem Gurtschloß begrenzt die maximal im Fahrzeug- Sicherheitsgurt wirkende Kraft. Im Inneren der ringförmigen Streckglieder sind vorsprungartige Begrenzungselemente angeordnet, die ab einer vorbestimmten Streckung aneinander in Anlage gelangen und so eine weitere Längenzunahme des Streckelementes begrenzen.Fastening fitting remote end is provided with a retaining tab for the buckle. The stretching element consists of a plurality of annular stretching members which are connected in one piece and which are stretched between the belt buckle and the fastening fitting after a predetermined tensile load has been exceeded. The resulting increase in length between the mounting bracket and the buckle limits the maximum force acting in the vehicle seat belt. Projection-like limiting elements are arranged in the interior of the annular stretching elements, which come into abutment from a predetermined stretching and thus limit a further increase in the length of the stretching element.
Nachteilig bei dieser bekannten Baugruppe ist es, daß die Kennlinie von Längenzunahme über wirkender Zugkraft nicht unabhängig von der maximalen Zugbelastung eingestellt werden kann, deren Übertragung von der Baugruppe gefordert wird. - 2 -A disadvantage of this known assembly is that the characteristic curve of length increase over effective tensile force cannot be set independently of the maximum tensile load, the transmission of which is required by the assembly. - 2 -
Die Erfindung schafft eine Baugruppe aus einem Gurtschloß, einem Befestigungsbeschlag und einem Kraftbegrenzer, bei dem die Kennlinie von Längenzunahme über wirkender Zugkraft in beliebiger Weise an die jeweiligen Anforderungen angepaßt werden kann, ohne daß hiervon die maximal zulässige Zugbelastung beeinflußt wird, die zwischen dem Gurtschloß und dem Befestigungsbeschlag übertragen werden kann. Gemäß der Erfindung ist bei einer Baugruppe der eingangs genannten Art vorgesehen, daß der Kraftbegrenzer ein mit dem Gurtschloß fest verbundenes Zugmittel, das relativ zum Befestigungsbeschlag um einen vorbestimmten Weg bewegbar ist, und ein Streckelement enthält, das mit dem Gurtschloß und dem Befestigungsbeschlag gekoppelt ist und durch Überschreiten einer vorbestimmten Zugkraft zwischen dem Gurtschloß und dem Befestigungsbeschlag gestreckt werden kann. Im Gegensatz zum Stand der Technik sieht die Erfindung also zusätzlich zum Streckelement ein getrenntes Zugmittel vor, das dazu dient, wenigstens im vollständig gestreckten Zustand des Kraftbegrenzers einen wesentlichen Teil der zwischen dem Gurtschloß und dem Befestigungsbeschlag wirkenden Zugkräfte zu übertragen. Das Streckelement kann daher unabhängig von der geforderten maximalen Belastbarkeit der Baugruppe dimensioniert werden.The invention provides an assembly of a belt buckle, a mounting bracket and a force limiter, in which the characteristic curve of length increase over effective tensile force can be adapted in any way to the respective requirements, without influencing the maximum allowable tensile load, which is between the buckle and the mounting bracket can be transferred. According to the invention it is provided in an assembly of the type mentioned that the force limiter contains a traction means which is fixedly connected to the belt buckle and which is movable relative to the fastening fitting by a predetermined path, and a stretching element which is coupled to the belt buckle and the fastening fitting and can be stretched by exceeding a predetermined tensile force between the buckle and the mounting bracket. In contrast to the prior art, the invention therefore provides, in addition to the stretching element, a separate traction means which serves to transmit a substantial part of the tensile forces acting between the belt buckle and the fastening fitting, at least in the fully extended state of the force limiter. The stretching element can therefore be dimensioned independently of the maximum load capacity of the assembly.
Vorzugsweise ist vorgesehen, daß das Zugmittel aus mindestens einem Drahtseil besteht, das fest mit dem Gurtschloß verbunden ist und am Befestigungsbeschlag verschiebbar geführt ist, und daß an dem vom Gurtschloß abgewandten Ende des Drahtseils ein Anschlagteil angebracht ist, das nach einer Verstellung des Drahtseils relativ zu dem Befestigungsbeschlag um den vorbestimmten Weg am Befestigungsbeschlag in Anlage gelangt . Da ein Drahtseil für die Übertragung von Zugbelastungen besonders gut geeignet ist und zudem kostengünstig eingesetzt werden kann, läßt sich bei dieser Gestaltung mit vergleichsweise geringem Aufwand eine Baugruppe erzielen, mit der ungeachtet des vorhandenen Streckelementes besonders hohe Belastungen - 3 -It is preferably provided that the traction means consists of at least one wire rope, which is fixedly connected to the belt buckle and is displaceably guided on the fastening fitting, and that a stop part is attached to the end of the wire rope facing away from the belt buckle, which, after an adjustment of the wire rope, is relative to the fastening fitting comes into contact with the fastening fitting by the predetermined path. Since a wire rope is particularly well suited for the transmission of tensile loads and can also be used inexpensively, this design allows a module to be obtained with comparatively little effort, with which, despite the existing stretching element, particularly high loads - 3 -
zwischen dem Gurtschloß und dem Befestigungsbeschlag übertragbar sind.are transferable between the buckle and the mounting bracket.
Gemäß einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, daß zwei Drahtseile verwendet werden, die am Rahmen des Gurtschlosses verankert sind, und daß das dem Gurtschloß zugewandte Ende des Streckelementes fest mit den Drahtseilen verpreßt ist. Durch die Verwendung von zwei Drahtseilen läßt sich das Gurtschloß ohne zusätzliche Hilfsmittel sicher in der gewünschten Ausrichtung im Fahrzeuginnenraum positionieren. Die Herstellung der Baugruppe erfordert bei dieser Gestaltung einen minimalen Aufwand, da die Drahtseile lediglich in die Führung am Befestigungsbeschlag eingelegt werden müssen und dann nur das dem Gurtschloß zugewandte Ende des Streckelementes fest mit den Drahtseilen verpreßt werden muß.According to a preferred embodiment of the invention, it is provided that two wire ropes are used, which are anchored to the frame of the belt buckle, and that the end of the stretching element facing the belt buckle is firmly pressed with the wire ropes. By using two wire ropes, the belt buckle can be safely positioned in the desired orientation in the vehicle interior without additional aids. The production of the assembly requires a minimal effort with this design, since the wire cables only have to be inserted into the guide on the fastening fitting and then only the end of the stretching element facing the buckle has to be firmly pressed with the wire cables.
Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Advantageous refinements of the invention result from the subclaims.
Die Erfindung wird nachfolgend unter Bezugnahme auf verschiedene Ausführungsformen beschrieben, die in den beigefügten Zeichnungen dargestellt sind. In diesen zeigen:The invention is described below with reference to various embodiments, which are illustrated in the accompanying drawings. In these show:
- Figur 1 eine perspektivische Vorderansicht einer erfindungsgemäßen Baugruppe gemäß einer ersten Ausführungsfor ;- Figure 1 is a front perspective view of an assembly according to the invention according to a first embodiment;
- Figur 2 eine perspektivische Rückansicht einer erfindungsgemäßen Baugruppe gemäß einer zweiten Ausführungsform;- Figure 2 is a perspective rear view of an assembly according to the invention according to a second embodiment;
- Figur 3 in einer Seitenansicht ein Detail der in Figur 2 gezeigten Baugruppe; und- Figure 3 is a side view of a detail of the assembly shown in Figure 2; and
- Figur 4 in einer Seitenansicht ein Detail einer Baugruppe gemäß einer dritten Ausführungsform. - 4 -- Figure 4 is a side view of a detail of an assembly according to a third embodiment. - 4 -
In Figur 1 ist sche atisch eine Baugruppe gemäß einer ersten Aus führungs form der Erfindung gezeigt. Die Baugruppe enthält ein Gurtschloß 10, in das eine Steckzunge eines Fahrzeug- Sicherheitsgurtsystems eingesteckt werden kann und das mit einem Befestigungsbeschlag 12 gekoppelt ist, der zur Befestigung der Baugruppe an einem (nicht dargestellten) Fahrzeug dient. Das Gurtschloß 10 enthält in seinem Inneren einen (nicht dargestellten) lasttragenden Rahmen, in den bei eingesteckter Steckzunge die Belastungen des Sicherheitsgurtes übertragen werden. Mit dem lasttragenden Rahmen sind zwei Drahtseile 14, 16 fest verbunden, auf die an ihrem vom Gurtschloß 10 abgewandten Ende ein Anschlagteil 18 aufgepreßt ist.In Figure 1 is schematically shown an assembly according to a first embodiment of the invention. The assembly includes a buckle 10 into which a tongue of a vehicle seat belt system can be inserted and which is coupled to a mounting bracket 12 which serves to attach the assembly to a vehicle (not shown). The belt buckle 10 contains in its interior a load-bearing frame (not shown) into which the loads on the seat belt are transmitted when the tongue is inserted. With the load-bearing frame, two wire cables 14, 16 are firmly connected, onto which a stop part 18 is pressed at their end facing away from the buckle 10.
Der Befestigungsbeschlag 12 ist mit zwei Führungslaschen 20, 22 versehen, die die Drahtseile 14, 16 umgreifen. An das mit den Führungslaschen 20, 22 versehene Ende des Befestigungsbeschlags 12 schließt sich ein Streckelement 24 an. Dieses besteht aus zwei ringförmigen, einstückig miteinander verbundenen Streckgliedern 26, 28, zwischen denen, wenn dies gewünscht wird, eine Sollbruchstelle 30 vorgesehen werden kann. An das Streckglied 28 schließen sich zwei Arretierungslaschen 32, 34 an, die fest mit den Drahtseilen 14, 16 verpreßt sind. Die beiden Arretierungslaschen 32, 34 sind so ausgelegt und mit den Drahtseilen 14, 16 verpreßt, daß sie von den Drahtseilen eine maximale Zugkraft in die Streckglieder 26, 28 übertragen können, die größer als die Kraft ist, die zum Strecken der Streckglieder erforderlich ist. Im Gegensatz hierzu sind die Laschen 20, 22, die zur Führung der Drahtseile 14, 16 amThe mounting bracket 12 is provided with two guide tabs 20, 22 which grip around the wire cables 14, 16. A stretching element 24 connects to the end of the fastening fitting 12 provided with the guide tabs 20, 22. This consists of two annular, integrally connected stretching members 26, 28, between which, if desired, a predetermined breaking point 30 can be provided. At the extension member 28 are two locking tabs 32, 34, which are firmly pressed with the wire cables 14, 16. The two locking tabs 32, 34 are designed and pressed with the wire cables 14, 16 so that they can transmit a maximum tensile force from the wire cables into the stretching members 26, 28, which is greater than the force required to stretch the stretching members. In contrast, the tabs 20, 22, which are used to guide the wire cables 14, 16
Befestigungsbeschlag 12 dienen, lediglich so weit umgebogen, daß sie mit einer geringen Vorspannung an den Drahtseilen 14, 16 anliegen; die Laschen 20, 22 sorgen also im Gegensatz zu den Arretierungslaschen 32, 34 nicht für eine Festlegung der Drahtseile 14, 16 am Befestigungsbeschlag 12, sondern stellen lediglich bei einer Relativbewegung zwischen den Drahtseilen 14, 16 und dem Befestigungsbeschlag 12 eine vorbestimmte Reibungskraft bereit. - 5 -Fastening fitting 12 are used, only bent so far that they abut the wire cables 14, 16 with a slight pretension; in contrast to the locking tabs 32, 34, the tabs 20, 22 do not ensure that the wire cables 14, 16 are fixed on the fastening fitting 12, but only provide a predetermined frictional force when there is a relative movement between the wire cables 14, 16 and the fastening fitting 12. - 5 -
Optional kann auf dem vom Gurtschloß abgewandten Ende der Drahtseile 14, 16 eine Dämpfungshülse 36 angeordnet werden.Optionally, a damping sleeve 36 can be arranged on the end of the wire cables 14, 16 facing away from the buckle.
Wenn eine Zugbelastung zwischen dem Gurtschloß 10 und dem Befestigungsbeschlag 12 wirkt, können drei verschiedene Zustände beobachtet werden. In einem ersten Zustand, in welchem die Zugkraft unterhalb einer ersten Grenzkraft liegt, tritt keine Längenzunahme der Baugruppe auf. Die erste Grenzkraft setzt sich zusammen aus der Kraft, die zum Strecken der Streckglieder 26, 28 erforderlich ist, und der Kraft, die zum Überwinden der Reibung zwischen den Laschen 20, 22 und den Drahtseilen 14, 16 erforderlich ist.When a tensile load acts between the buckle 10 and the mounting bracket 12, three different conditions can be observed. In a first state, in which the tensile force is below a first limit force, there is no increase in length of the assembly. The first limit force is composed of the force required to stretch the stretching members 26, 28 and the force required to overcome the friction between the tabs 20, 22 and the wire cables 14, 16.
In einem zweiten Zustand, in welchem die erste Grenzkraft überschritten ist, werden die Streckglieder 26, 28 gestreckt, da sie von den Drahtseilen 14, 16 über die Laschen 32, 34 mitgenommen werden, wobei die Drahtseile 14, 16 durch die Laschen 20, 22 hindurchgezogen werden. Nach einer vorbestimmten Längenzunahme gelangt entweder die optional vorgesehene Dämpfungshülse 36 oder das Anschlagteil 18 in Anlage an den Laschen 20, 22, so daß die Längenzunahme begrenzt wird. Die zu diesem Zeitpunkt erreichte Zugkraft stellt eine zweite Grenzkraft dar.In a second state, in which the first limit force is exceeded, the stretching members 26, 28 are stretched because they are carried along by the wire cables 14, 16 via the tabs 32, 34, the wire cables 14, 16 through the tabs 20, 22 be pulled through. After a predetermined increase in length, either the optionally provided damping sleeve 36 or the stop part 18 comes into contact with the tabs 20, 22, so that the increase in length is limited. The tensile force reached at this point represents a second limit force.
In einem dritten Zustand nach Überschreiten der zweiten Grenzkraft sind die Streckglieder 26, 28 gestreckt, und entweder die Dämpfungshülse 36 oder das Anschlagteil 18 liegt an den Laschen 20, 22 an. Wenn nun die Zugbelastung weiter erhöht wird, erfolgt keine Längenzunahme mehr.In a third state after the second limit force has been exceeded, the stretching members 26, 28 are stretched, and either the damping sleeve 36 or the stop part 18 lies against the tabs 20, 22. If the tensile load is increased further, there is no longer an increase in length.
Die Kennlinie von Längenzunahme über wirkender Zugkraft kann in nahezu beliebiger Weise durch die Auslegung der Streckglieder 26, 28 und der Vorspannung der Laschen 20, 22 eingestellt werden, ohne daß hierdurch die maximal zwischen dem Gurtschloß 10 und dem Befestigungsbeschlag 12 übertragbare Zugkraft beeinflußt wird. - 6 -The characteristic curve of increase in length over acting tensile force can be adjusted in almost any manner by the design of the stretching members 26, 28 and the pretensioning of the tabs 20, 22, without this influencing the maximum tensile force that can be transmitted between the belt buckle 10 and the fastening fitting 12. - 6 -
In den Figuren 2 und 3 ist schematisch eine zweite Ausführungsform der Erfindung dargestellt. Diese unterscheidet sich von der ersten Aus führungs form durch die Verwendung von drei Streckgliedern 26, 28, 29 anstelle von zwei Streckgliedern sowie durch die Anordnung der Zugseile 14, 16 im Bereich des Befestigungsbeschlags 12. Die Zugseile 14, 16 werden am Befestigungsbeschlag 12 um 180° umgelenkt, so daß das Anschlagteil 18 wieder zum Gurtschloß hin ausgerichtet ist. Durch die Umlenkung wird einer Verstellung der Drahtseile 14, 16 relativ zum Befestigungsbeschlag 12 eine Widerstandskraft entgegengesetzt, die sich zum einen aus Umschlingungsreibung im Bereich des Befestigungsbeschlags 12 und zum anderen aus der Biegesteifigkeit der Drahtseile 14, 16 zusammensetzt. Bei dieser Ausführungsform liegt die Dämpfungshülse 36 bereits im Ruhezustand sowohl am Anschlagteil 18 als auch am Befestigungsbeschlag 12 an; sie dämpft also von Anfang an die Relativbewegung zwischen den Drahtseilen 14, 16 und dem Befestigungsbeschlag 12.A second embodiment of the invention is shown schematically in FIGS. This differs from the first embodiment by the use of three extension members 26, 28, 29 instead of two extension members and by the arrangement of the pulling cables 14, 16 in the area of the fastening fitting 12. The pulling cables 14, 16 are attached to the fastening fitting 12 by 180 ° deflected so that the stop member 18 is again aligned towards the buckle. Due to the deflection, an adjustment of the wire cables 14, 16 relative to the fastening fitting 12 is opposed by a resistance force which is composed, on the one hand, of loop friction in the region of the fastening fitting 12 and, on the other hand, of the bending stiffness of the wire cables 14, 16. In this embodiment, the damping sleeve 36 is already at rest both on the stop member 18 and the mounting bracket 12; it dampens the relative movement between the wire cables 14, 16 and the fastening fitting 12 right from the start.
In Figur 4 ist ein Detail einer dritten Ausführungsform gezeigt. Die dritte Ausführungsform unterscheidet sich von der zweiten Ausführungsform abgesehen von der fehlenden Dämpfungshülse dadurch, daß die Drahtseile 14, 16 über das Anschlagteil 18 hinausragen. Am Befestigungsbeschlag 12 sind zwei Laschen 38 vorgesehen, die in gleicher Weise wie die Laschen 20, 22 die Drahtseile 14, 16 umgreifen. Je nach der Auslegung der Laschen 38 und dem Maß ihrer Verpressung mit den Drahtseilen 14, 16 dienen sie entweder nur zur Führung des umgelenkten Abschnittes der Drahtseile oder zusätzlich dazu, eine vorbestimmte Reibungskraft bereitzustellen, die einer Relativverschiebung zwischen den Drahtseilen 14, 16 und dem Befestigungsbeschlag 12 entgegenwirkt. A detail of a third embodiment is shown in FIG. The third embodiment differs from the second embodiment apart from the lack of a damping sleeve in that the wire cables 14, 16 protrude beyond the stop part 18. On the mounting bracket 12, two tabs 38 are provided which engage around the wire cables 14, 16 in the same way as the tabs 20, 22. Depending on the design of the tabs 38 and the extent to which they are pressed together with the wire cables 14, 16, they either serve only to guide the deflected section of the wire cables or, in addition, to provide a predetermined frictional force which causes a relative displacement between the wire cables 14, 16 and the fastening fitting 12 counteracts.

Claims

- 7 -Patentansprüche - 7 patent claims
1. Baugruppe aus einem Gurtschloß (10) für die Steckzunge eines Fahrzeug-Sicherheitsgurts, einem Befestigungsbeschlag (12) für das Gurtschloß (10) und einem Kraftbegrenzer zwischen dem Gurtschloß (10) und dem Befestigungsbeschlag1. Assembly from a belt buckle (10) for the tongue of a vehicle seat belt, a mounting bracket (12) for the belt buckle (10) and a force limiter between the belt buckle (10) and the mounting bracket
(12), dadurch gekennzeichnet, daß der Kraftbegrenzer ein mit dem Gurtschloß (10) fest verbundenes Zugmittel (14, 16), das relativ zum Befestigungsbeschlag (12) um einen vorbestimmten Weg bewegbar ist, und ein Streckelement (24) enthält, das mit dem Gurtschloß (10) und dem Befestigungsbeschlag (12) gekoppelt ist und durch Überschreiten einer vorbestimmten Zugkraft zwischen dem Gurtschloß (10) und dem Befestigungsbeschlag (12) gestreckt werden kann.(12), characterized in that the force limiter contains a traction means (14, 16) which is fixedly connected to the belt buckle (10) and which can be moved by a predetermined distance relative to the fastening fitting (12), and a stretching element (24) which includes the belt buckle (10) and the fastening bracket (12) is coupled and can be stretched by exceeding a predetermined tensile force between the belt buckle (10) and the fastening bracket (12).
2. Baugruppe nach Anspruch 1, dadurch gekennzeichnet, daß das Zugmittel aus mindestens einem Drahtseil (14, 16) besteht, das fest mit dem Gurtschloß (10) verbunden ist und am Befestigungsbeschlag (12) verschiebbar geführt ist, und daß an dem vom Gurtschloß (10) abgewandten Ende des Drahtseils (14, 16) ein Anschlagteil (18) angebracht ist, das nach einer Verstellung des Drahtseils (14, 16) relativ zu dem Befestigungsbeschlag ( 12 ) um den vorbestimmten Weg am Befestigungsbeschlag (12) in Anlage gelangt.2. An assembly according to claim 1, characterized in that the traction means consists of at least one wire rope (14, 16) which is fixedly connected to the belt buckle (10) and is displaceably guided on the fastening fitting (12), and in that of the belt buckle (10) facing away from the end of the wire rope (14, 16), a stop part (18) is attached which, after an adjustment of the wire rope (14, 16) relative to the fastening fitting (12), comes into contact with the fastening fitting (12) by the predetermined path .
3. Baugruppe nach Anspruch 2, dadurch gekennzeichnet, daß das Drahtseil (14, 16) am Befestigungsbeschlag (12) von mindestens zwei Laschen (20, 22) geführt wird, an denen das Anschlagteil (18) in Anlage gelangen kann.3. Module according to claim 2, characterized in that the wire rope (14, 16) on the fastening fitting (12) of at least two tabs (20, 22) is guided, on which the stop part (18) can come into contact.
4. Baugruppe nach einem der Ansprüche 2 und 3, dadurch gekennzeichnet, daß das Drahtseil (14, 16) im Bereich des Befestigungsbeschlags (12) um etwa 180° umgelenkt wird und das Anschlagteil (18) an der Umlenkstelle in Anlage am Befestigungsbeschlag (12) gelangen kann. 4. Assembly according to one of claims 2 and 3, characterized in that the wire rope (14, 16) in the region of the fastening fitting (12) is deflected by about 180 ° and the stop part (18) at the deflection point in contact with the fastening fitting (12th ) can reach.
5. Baugruppe nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß das vom Gurtschloß (10) abgewandte Ende des Drahtseils (14, 16) über das Anschlagteil (18) hinausragt und von zwei am Befestigungsbeschlag (12) ausgebildeten Laschen (38) geführt wird.5. Assembly according to one of claims 2 to 4, characterized in that the end of the wire cable (14, 16) facing away from the belt buckle (10) projects beyond the stop part (18) and from two on the mounting bracket (12) formed tabs (38) to be led.
6. Baugruppe nach Anspruch 3 oder Anspruch 5, dadurch gekennzeichnet, daß die Laschen (20, 22, 38) gegen das Drahtseil (14, 16) vorgespannt sind.6. An assembly according to claim 3 or claim 5, characterized in that the tabs (20, 22, 38) against the wire rope (14, 16) are biased.
7. Baugruppe nach einem der Ansprüche 2 bis 6 , dadurch gekennzeichnet, daß auf dem Drahtseil (14, 16) zwischen dem Befestigungsbeschlag (12) und dem Anschlagteil (18) eine Dämpfungshülse (36) angeordnet ist.7. Module according to one of claims 2 to 6, characterized in that a damping sleeve (36) is arranged on the wire rope (14, 16) between the fastening fitting (12) and the stop part (18).
8. Baugruppe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Streckelement (24) aus mehreren ringförmigen Streckgliedern (26, 28, 29) besteht, die einstückig miteinander verbunden sind.8. Assembly according to one of the preceding claims, characterized in that the stretching element (24) consists of a plurality of annular stretching members (26, 28, 29) which are integrally connected to one another.
9. Baugruppe nach Anspruch 8, dadurch gekennzeichnet, daß zwischen zwei aneinandergrenzenden Streckgliedern (26, 28) eine Sollbruchstelle (30) ausgebildet ist.9. An assembly according to claim 8, characterized in that a predetermined breaking point (30) is formed between two adjacent stretching members (26, 28).
10. Baugruppe nach einem der Ansprüche 2 bis 9 , dadurch gekennzeichnet, daß zwei Drahtseile (14, 16) verwendet werden, die am Rahmen des Gurtschlosses (10) verankert sind, und daß das dem Gurtschloß (10) zugewandte Ende (32, 34) des Streckelementes (24) fest mit den Drahtseilen (14, 16) verpreßt ist. 10. An assembly according to one of claims 2 to 9, characterized in that two wire cables (14, 16) are used which are anchored to the frame of the belt buckle (10), and that the belt buckle (10) facing the end (32, 34 ) of the stretching element (24) is firmly pressed with the wire cables (14, 16).
EP98965280A 1998-01-20 1998-12-17 Structural component consisting of a belt buckle, attachment hardware and a force limiter Withdrawn EP0968107A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29800909U 1998-01-20
DE29800909U DE29800909U1 (en) 1998-01-20 1998-01-20 Assembly of a belt buckle, a mounting bracket and a force limiter
PCT/EP1998/008305 WO1999037509A1 (en) 1998-01-20 1998-12-17 Structural component consisting of a belt buckle, attachment hardware and a force limiter

Publications (1)

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EP0968107A1 true EP0968107A1 (en) 2000-01-05

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EP98965280A Withdrawn EP0968107A1 (en) 1998-01-20 1998-12-17 Structural component consisting of a belt buckle, attachment hardware and a force limiter

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US (1) US6312057B1 (en)
EP (1) EP0968107A1 (en)
JP (1) JP2001516312A (en)
KR (1) KR20000076313A (en)
DE (1) DE29800909U1 (en)
WO (1) WO1999037509A1 (en)

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Also Published As

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US6312057B1 (en) 2001-11-06
DE29800909U1 (en) 1998-05-20
WO1999037509A1 (en) 1999-07-29
JP2001516312A (en) 2001-09-25
KR20000076313A (en) 2000-12-26

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