EP0364970A2 - Buckle for a safety belt system in a motor vehicle - Google Patents

Buckle for a safety belt system in a motor vehicle Download PDF

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Publication number
EP0364970A2
EP0364970A2 EP89119288A EP89119288A EP0364970A2 EP 0364970 A2 EP0364970 A2 EP 0364970A2 EP 89119288 A EP89119288 A EP 89119288A EP 89119288 A EP89119288 A EP 89119288A EP 0364970 A2 EP0364970 A2 EP 0364970A2
Authority
EP
European Patent Office
Prior art keywords
key
lock
spring
tongue
button
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
EP89119288A
Other languages
German (de)
French (fr)
Other versions
EP0364970A3 (en
EP0364970B1 (en
Inventor
Knut Oberhardt
Walter Notar
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 Kolb GmbH and Co
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 Kolb GmbH and Co , Autoliv Development AB filed Critical Autoliv Kolb GmbH and Co
Publication of EP0364970A2 publication Critical patent/EP0364970A2/en
Publication of EP0364970A3 publication Critical patent/EP0364970A3/en
Application granted granted Critical
Publication of EP0364970B1 publication Critical patent/EP0364970B1/en
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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45225—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
    • Y10T24/45602—Receiving member includes either movable connection between interlocking components or variable configuration cavity
    • Y10T24/45623—Receiving member includes either movable connection between interlocking components or variable configuration cavity and operator therefor

Definitions

  • the invention relates to a lock for a motor vehicle seat belt system for receiving and locking an insertion tongue with a latch for fixing the tongue, which can be moved between an unlocking and a locking position, a spring-loaded ejector, which extends the tongue in the unlocking position of the bolt presses the lock housing and a likewise spring-loaded button which can be moved in the direction of insertion of the tongue, by means of which the bolt can be moved into its unlocked position and which is blocked by an acceleration acting on the lock in the opposite direction to the release stroke of the button.
  • Locks of this type are required for use together with so-called lock braces. If this lock tightener is triggered in an accident, the lock is accelerated towards the vehicle floor by the energy released and braked in its lowest position within a very short time. Depending on the construction, accelerations between 500 and 1000 g can act on the parts of the lock.
  • the inertia of the release button creates forces that tend to move the button to its open position. This releases the lock bolt and releases the lock tongue.
  • GB 21 04 141 A a lock is known, in the trigger button a second button is guided. This second button actuates a safety pin that holds the release button in the rest position in a stable position relative to the housing.
  • the locking pin moves into its release position and the release button is released.
  • this lock is not suitable for use with a lock tightener.
  • the second button first moves into its release position due to its inertia, thereby enabling the opening button of the release button.
  • a lever loaded with an inertial mass is provided, which, when triggered, tensions between its mounting and the slide button.
  • the release button with a shock absorber which is intended to prevent an opening movement of the button in the case of shock-like accelerations.
  • the object is achieved in that at least part of the key is additionally tiltable.
  • the key consists of a functional part and an actuating part. Both parts are preferably made in one piece and connected to one another by a film hinge. The mass of the actuating part is negligible compared to the mass of the functional part.
  • a plastic spring, possibly molded onto one of the two key parts, which counteracts a relative movement of the two parts to one another, must be coordinated so that when the lock is accelerated, both key parts move with certainty first, so that a relative movement of the actuating part opposite the functional part can be excluded. As a result, a locking element attached to the actuating part can come into engagement with an element fixed to the housing and a further movement of the whole Lock the button.
  • the actuating part is first moved relative to the functional part and the locking element is thereby brought into a position in which it cannot come into engagement with the element fixed to the housing if the entire key is moved further .
  • the button is made in one piece.
  • the key spring is not articulated in the middle of the key, but close to the side that faces the lock tongue.
  • the key is designed to allow limited tilting around this edge.
  • the center of gravity of the key is as far as possible from the tipping point in the direction of the opposite side of the key.
  • the grip surface of the key is shaped so that when it is actuated for the purpose of opening, a tilting movement first takes place around the articulation point of the key spring.
  • a locking element which is attached to the key is brought into a position in which it cannot come into engagement with an element fixed to the housing when the key is moved further.
  • the mass of the key becomes center of gravity pulled down in the tilted position and the locking element comes into engagement with the housing-fixed element, which results in the key being locked.
  • the pivot point of the key spring can also be shifted to the side facing away from the tongue.
  • the center of gravity of the button should be as directly as possible above the pivot point. The result is the same as in the previous example.
  • the grip surface of the key and the lock housing are designed in such a way that, when actuated for the purpose of opening the lock, only vertical pressure from above is possible, so that the key is only moved in translation. In this case, a locking element connected to the key does not come into engagement with an element fixed to the housing. However, if the lock is accelerated, the key first performs a tilting movement due to a center of mass that is not in the line of action of the key spring, so that the locking element can in turn come into engagement with the element fixed to the housing.
  • a button which consists of a functional part 1 and an actuating part 2. Both parts are articulated together via axis 3.
  • the locking element 5 is fastened, which is in the rest position shortly before engagement with the element 6 fixed to the housing.
  • the spring 4 is tuned so that when the actuating element 2 is pressed, it moves only about the axis 3 before the functional part 1 moves against the force of the spring 7.
  • the center of gravity 8 is advantageously in the middle of the functional part 1 and the center of mass 9 of the actuating part 2 is directly above the axis of rotation 3 Actuating part 2 only pivoted out the blocking element 5 to such an extent that it does not come into engagement with the element 6 fixed to the housing when the functional part 1 moves in the opening direction.
  • the button is made in one piece.
  • a housing-fixed stop 10 is provided to turn the key 1 ', in its rest position about the point 9, in the position shown. This is done by the force of the spring 7.
  • a pressure which is directed approximately perpendicular to this actuating surface 2 '.
  • the key 1 ' is brought into a position in which the key-fixed locking element 5' no longer comes into engagement with the housing-fixed element 6 'upon further actuation.
  • the button moves translationally in the opening direction tung continue.
  • the key 1 Since the housing-fixed stop 10 acts only in one direction on the key, the key 1 'under the action of acceleration forces, only by the pivot point 12 of the spring 7, a resistance. In the position of the center of gravity 8 'shown, the key 1' will move downwards in the tilted position shown in FIG. 2, so that the locking element 5 'comes into engagement with the element 6' fixed to the housing and thereby blocks a further opening movement of the key .
  • the key 1 ' is held by the spring 13' in its rest position.
  • a trigger pressure approximately perpendicular to the actuating surface 2 'acts with the correct dimensioning of the springs 13' and 7 no resulting tilting moment on the key 1 ', so that the entire opening stroke consists of a purely translational movement.
  • the articulation point 12 of the spring 7 acts as an abutment, so that when the center of gravity 8 'moves, corresponding to the acceleration forces, the key 1' is exerted a tilting moment and the locking element 5 'engages with the element 6' fixed to the housing is coming.
  • correct dimensioning of the center of gravity 8 'and the spring 13' must be taken into account here.

Landscapes

  • Lock And Its Accessories (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Buckles (AREA)

Abstract

A buckle for a motor vehicle safety belt system for receiving and locking an insertion tongue is provided with a bolt for fixing the tongue, which bolt can be moved between its release position and locking position, a spring-loaded ejector which presses the tongue in the release position of the bolt out of the buckle casing and a button, likewise spring-loaded which can be displaced in the insertion direction of the tongue, by means of which button the bolt can be moved into its release position. …<??>In order to block the button in the event of an acceleration acting on the lock in the opposite direction to the release travel, at least one part of the button is additionally tiltably mounted. As a result, in the event of a corresponding acceleration of the lock, the button moves differently than in the case of a desired release travel. This movement is utilised to block the button. …<IMAGE>…

Description

Die Erfindung geht aus von einem Schloß für ein Kraftfahrzeug-Sicherheitsgurtsystem zur Aufnahme und Verriegelung einer Einsteckzunge mit einem Rie­gel zur Festlegung der Zunge, der zwischen einer Entriegelungs- und einer Verriegelungsstellung be­wegbar ist, einem federbelasteten Auswerfer, der die Zunge in der Entriegelungsstellung des Riegels aus dem Schloßgehäuse drückt und einer ebenfalls fe­derbelasteten in Einschubrichtung der Zunge ver­schiebbaren Taste, durch die sich der Riegel in sei­ne Entriegelungsstellung bewegen läßt, und die durch eine auf das Schloß in entgegengesetzter Rich­tung zum Auslösehub der Taste einwirkende Beschleu­nigung blockiert wird.The invention relates to a lock for a motor vehicle seat belt system for receiving and locking an insertion tongue with a latch for fixing the tongue, which can be moved between an unlocking and a locking position, a spring-loaded ejector, which extends the tongue in the unlocking position of the bolt presses the lock housing and a likewise spring-loaded button which can be moved in the direction of insertion of the tongue, by means of which the bolt can be moved into its unlocked position and which is blocked by an acceleration acting on the lock in the opposite direction to the release stroke of the button.

Schlösser dieser Art werden für den Einsatz zusam­men mit sog. Schloßstrammern benötigt. Wenn dieser Schloßstrammer bei einem Unfall ausge­löst wird, wird das Schloß durch die freiwerdende Energie in Richtung des Fahrzeugbodens beschleunigt und in seiner untersten Stellung innerhalb kürze­ster Zeit abgebremst. Dabei können, je nach Kon­struktion, Beschleunigungen zwischen 500 und 1000 g auf die Teile des Schlosses wirken. Durch die träge Masse der Auslösetaste entstehen dabei Kräfte, die bestrebt sind, die Taste in ihre Öff­nungsstellung zu bewegen. Dadurch wird der Riegel des Schlosses gelöst und die Schloßzunge freigege­ben.
Aus der GB 21 04 141 A ist ein Schloß bekannt, in dessen Auslösetaste eine zweite Taste verschieblich geführt ist. Diese zweite Taste betätigt einen Si­cherungsstift, der die Auslösetaste in Ruhestellung in einer relativ zum Gehäuse stabilen Lage hält. Wird nun die zweite Taste, die etwas über die Griffläche der Auslösetaste hinaussteht gedrückt, so bewegt sich der Sicherungsstift in seine Freiga­bestellung und die Auslösetaste wird freigegeben. Dieses Schloß ist jedoch nicht zusammen mit einem Schloßstrammer geeignet. Bei einer Beschleunigung des Schlosses entgegen der Richtung des Öffnungshu­bes bewegt sich zuerst aufgrund ihrer Massenträg­heit die zweite Taste in ihre Freigabestellung und ermöglicht dadurch den Öffnungshub der Auslöseta­ste.Locks of this type are required for use together with so-called lock braces. If this lock tightener is triggered in an accident, the lock is accelerated towards the vehicle floor by the energy released and braked in its lowest position within a very short time. Depending on the construction, accelerations between 500 and 1000 g can act on the parts of the lock. The inertia of the release button creates forces that tend to move the button to its open position. This releases the lock bolt and releases the lock tongue.
From GB 21 04 141 A a lock is known, in the trigger button a second button is guided. This second button actuates a safety pin that holds the release button in the rest position in a stable position relative to the housing. If the second button, which protrudes slightly beyond the grip area of the release button, is pressed, the locking pin moves into its release position and the release button is released. However, this lock is not suitable for use with a lock tightener. When the lock is accelerated against the direction of the opening stroke, the second button first moves into its release position due to its inertia, thereby enabling the opening button of the release button.

Aus der DE-AS 20 43 634 ist ein Zentralgurtschloß für Fallschirmspringer-Körpergurtzeuge bekannt. Bei diesem Schloß ist die Auslösetaste als Drehscheibe ausgebildet. Zum Auslösen muß diese Scheibe zuerst um ihre Mittelachse gedreht und dann in das Gehäuse eingedrückt werden. Zum einen ist die Formgebung als Drehscheibe für Kraftfahrzeugsicherheitsgurt­schlösser nicht geeignet, und zum anderen wäre die Handhabung z.B. nach Unfällen oder bei einem Brand des Fahrzeuges zu kompliziert und umständlich. Es wurden aber auch bereits Schlösser bekannt, die für das Zusammenwirken mit einem Schloßstrammer für Kraftfahrzeuge geeignet sind. In der EP 212507 ist ein Schloß gezeigt, bei dem die Masse der Auslöseta­ste durch eine Ausgleichsmasse, die über einen He­belarm mit der Taste verbunden ist kompensiert wird. In einem anderen Ausführungsbeispiel ist ein mit einer Trägheitsmasse belasteter Hebel vorgese­hen, der sich im Auslösefall zwischen seiner Lage­rung und der Schiebetaste verspannt.
Aus dieser Schrift ist es ebenfalls bekannt die Aus­lösetaste mit einem Stoßdämpfer zu versehen, der bei schockartigen Beschleunigungen eine Öffnungsbe­wegung der Taste verhindern soll.From DE-AS 20 43 634 a central belt lock for skydiving body harnesses is known. In this lock, the release button is designed as a turntable. To trigger this disc must first be rotated about its central axis and then pressed into the housing. On the one hand, the design as a turntable for motor vehicle seat belt buckles is not suitable, and on the other hand, the handling would be too complicated and cumbersome, for example after accidents or in the event of a fire in the vehicle. However, locks were also known which are suitable for interacting with a lock tensioner for motor vehicles. EP 212507 shows a lock in which the mass of the release button is compensated for by a balancing mass which is connected to the button via a lever arm. In another embodiment, a lever loaded with an inertial mass is provided, which, when triggered, tensions between its mounting and the slide button.
From this document it is also known to provide the release button with a shock absorber which is intended to prevent an opening movement of the button in the case of shock-like accelerations.

Es ist Aufgabe der Erfindung ein Schloß zu schaf­fen, das bei einem Strammvorgang eine Fehlauslösung sicher vermeidet, das einfach zu handhaben ist und das keine oder nur wenige zusätzliche Teile benö­tigt und somit preiswert herstellbar ist.It is an object of the invention to provide a lock which reliably avoids false triggering during a pretensioning process, which is easy to handle and which requires no or only a few additional parts and is therefore inexpensive to produce.

Die Aufgabe wird dadurch gelöst, daß zumindest ein Teil der Taste zusätzlich kippbar gelagert ist.The object is achieved in that at least part of the key is additionally tiltable.

In einem ersten Ausführungsbeispiel besteht die Ta­ste aus einem Funktionsteil und einem Betätigungs­teil. In bevorzugter Weise sind beide Teile ein­stückig gefertigt und durch ein Filmscharnier mit­einander verbunden. Die Masse des Betätigungsteiles ist gegenüber der Masse des Funktionsteiles vernach­läßigbar. Eine evtl. aus Kunststoff an eines der beiden Tastenteile angespritzte Kunststoffeder, die einer Relativbewegung der beiden Teile zueinander entgegenwirkt, muß so abgestimmt sein, daß bei ei­ner auf das Schloß einwirkenden Beschleunigung sich mit Sicherheit zuerst beide Tastenteile bewegen, so daß eine Relativbewegung des Betätigungsteiles ge­genüber dem Funktionsteil ausgeschlossen werden kann. Dadurch kann ein am Betätigungsteil angebrach­tes Sperrelement mit einem gehäusefesten Element in Eingriff kommen und eine weitere Bewegung der gesam­ ten Taste sperren. Soll die Taste jedoch von Hand gedrückt werden um das Schloß zu öffnen, wird zu­erst das Betätigungsteil relativ zum Funktionsteil bewegt und das Sperrelement dadurch in eine Positi­on gebracht, in der es bei einer weiteren Bewegung der gesamten Taste nicht mit dem gehäusefesten Ele­ment in Eingriff kommen kann.In a first embodiment, the key consists of a functional part and an actuating part. Both parts are preferably made in one piece and connected to one another by a film hinge. The mass of the actuating part is negligible compared to the mass of the functional part. A plastic spring, possibly molded onto one of the two key parts, which counteracts a relative movement of the two parts to one another, must be coordinated so that when the lock is accelerated, both key parts move with certainty first, so that a relative movement of the actuating part opposite the functional part can be excluded. As a result, a locking element attached to the actuating part can come into engagement with an element fixed to the housing and a further movement of the whole Lock the button. However, if the key is to be pressed by hand to open the lock, the actuating part is first moved relative to the functional part and the locking element is thereby brought into a position in which it cannot come into engagement with the element fixed to the housing if the entire key is moved further .

Bei einem weiteren Ausführungsbeispiel ist die Ta­ste vollkommen einteilig gefertigt. Die Tastenfeder ist dabei nicht in der Mitte der Taste angelenkt, sondern nahe der Seite, die der Schloßzunge zuge­wandt ist. Die Führung der Taste ist so konzipiert, daß sie ein begrenztes Kippen um diese Kante zu­läßt. Der Massenschwerpunkt der Taste liegt dabei möglichst weit von dem Kippunkt in Richtung der ge­genüberliegenden Tastenseite entfernt. Die Griff­läche der Taste ist so geformt, daß bei einer Betä­tigung zum Zwecke des Öffnens zuerst eine Kippbewe­gung um den Anlenkpunkt der Tastenfeder stattfin­det. Dabei wird wiederum ein Sperrelement, das an der Taste befestigt ist in eine Position gebracht, in der es bei einer weiteren Bewegung der Taste nicht mit einem gehäusefesten Element in Eingriff kommen kann. Wirkt auf das Schloß jedoch eine Be­schleunigung, so wird die Taste durch ihren Massen­ schwerpunkt in der gekippten Stellung nach unten ge­zogen und das Sperrelement kommt mit dem gehäusefe­sten Element in Eingriff, was eine Sperrung der Ta­ste zur Folge hat.In a further embodiment, the button is made in one piece. The key spring is not articulated in the middle of the key, but close to the side that faces the lock tongue. The key is designed to allow limited tilting around this edge. The center of gravity of the key is as far as possible from the tipping point in the direction of the opposite side of the key. The grip surface of the key is shaped so that when it is actuated for the purpose of opening, a tilting movement first takes place around the articulation point of the key spring. Here again, a locking element which is attached to the key is brought into a position in which it cannot come into engagement with an element fixed to the housing when the key is moved further. However, if an acceleration acts on the lock, the mass of the key becomes center of gravity pulled down in the tilted position and the locking element comes into engagement with the housing-fixed element, which results in the key being locked.

Der Anlenkpunkt der Tastenfeder läßt sich auch auf die der Zunge abgewandten Seite verlagern. In die­sem Fall müßte der Massenschwerpunkt der Taste mög­lichst direkt über dem Anlenkpunkt liegen. Das Er­gebnis ist dasselbe wie im vorhergehenden Beispiel.The pivot point of the key spring can also be shifted to the side facing away from the tongue. In this case, the center of gravity of the button should be as directly as possible above the pivot point. The result is the same as in the previous example.

In einem weiteren Ausführungsbeispiel ist die Griffläche der Taste und das Schloßgehäuse so ge­staltet, daß bei einer Betätigung zum Zweck des Öffnens des Schlosses nur ein Druck senkrecht von oben möglich ist, so daß die Taste ausschließlich translatorisch bewegt wird. In diesem Fall kommt ein mit der Taste verbundenes Sperrelement nicht in Eingriff mit einem gehäusefesten Element. Wirkt je­doch eine Beschleunigung auf das Schloß, so führt die Taste, bedingt durch einen Massenschwerkpunkt, der nicht in der Wirklinie der Tastenfeder liegt, zuerst eine Kippbewegung aus, so daß das Sperrele­ment wiederum mit dem gehäusefesten Element in Ein­griff kommen kann.In a further embodiment, the grip surface of the key and the lock housing are designed in such a way that, when actuated for the purpose of opening the lock, only vertical pressure from above is possible, so that the key is only moved in translation. In this case, a locking element connected to the key does not come into engagement with an element fixed to the housing. However, if the lock is accelerated, the key first performs a tilting movement due to a center of mass that is not in the line of action of the key spring, so that the locking element can in turn come into engagement with the element fixed to the housing.

Im folgenden ist die Erfindung anhand der Zeichnung näher erläutert:The invention is explained in more detail below with reference to the drawing:

Es zeigt

  • Figur 1 ein erstes Ausführungsbeispiel des erfindungsge­mäßen Gegenstandes mit 2-teiliger Taste
  • Figur 2 bis 4 den erfindungsgemäßen Gegenstand mit einteiliger Taste
It shows
  • Figure 1 shows a first embodiment of the object of the invention with a two-part button
  • Figure 2 to 4 the subject of the invention with one-piece button

In Figur 1 ist eine Taste dargestellt, die aus ei­nem Funktionsteil 1 und einem Betätigungsteil 2 be­steht. Beide Teile sind über die Achse 3 gelenkig miteinander verbunden. Am Betätigungsteil 2 ist das Sperrelement 5 befestigt, welches in der Ruhestel­lung kurz vor dem Eingriff mit dem gehäusefesten Element 6 steht. Die Feder 4 ist so abgestimmt, daß sich bei einem Druck auf das Betätigungselement 2 dieses erst um die Achse 3 bewegt, bevor sich das Funktionsteil 1 gegen die Kraft der Feder 7 ver­schiebt. In vorteilhafter Weise liegt der Massenschwerpunkt 8 in der Mitte des Funktionsteils 1 und der Massenschwerpunkt 9 des Betätigungsteiles 2 direkt über der Drehachse 3. Da­durch wird bei einem Druck auf das Betätigungsteil 2 erst das Sperrelement 5 soweit ausgeschwenkt, daß es bei einer Bewegung des Funktionsteiles 1 in Öffnungsrichtung nicht mit dem gehäusefesten Element 6 in Eingriff gelangt. Wirkt dagegen eine Beschleunigung auf das Schloß, so fin­det keine rotatorische Bewegung um die Achse 3 statt, sondern das Funktionsteil 1 bewegt sich zu­sammen mit dem Betätigungsteil 2 in Öffnungsrich­tung. Das Sperrelement 5 gelangt dadurch in Ein­griff mit dem gehäusefesten Element 6 und die gesam­te Tasteneinheit wird gesperrt.In Figure 1, a button is shown, which consists of a functional part 1 and an actuating part 2. Both parts are articulated together via axis 3. On the actuating part 2, the locking element 5 is fastened, which is in the rest position shortly before engagement with the element 6 fixed to the housing. The spring 4 is tuned so that when the actuating element 2 is pressed, it moves only about the axis 3 before the functional part 1 moves against the force of the spring 7. The center of gravity 8 is advantageously in the middle of the functional part 1 and the center of mass 9 of the actuating part 2 is directly above the axis of rotation 3 Actuating part 2 only pivoted out the blocking element 5 to such an extent that it does not come into engagement with the element 6 fixed to the housing when the functional part 1 moves in the opening direction. If, on the other hand, acceleration acts on the lock, there is no rotational movement about the axis 3, but the functional part 1 moves together with the actuating part 2 in the opening direction. The locking element 5 thereby comes into engagement with the housing-fixed element 6 and the entire key unit is locked.

In den übrigen Figuren ist die Taste einteilig aus­gebildet. In Figur 2 ist ein gehäusefester Anschlag 10 vorgesehen, um die Taste 1′, in ihrer Ruhestellung um den Punkt 9, in die dargestellte Stellung zu drehen. Dies geschieht durch die Kraft der Feder 7. Beim Betätigen der Taste 1′ wird auf die Betätigungsfläche 2′ ein Druck ausgeübt, der in etwa senkrecht zu dieser Betätigungsfläche 2′ ge­richtet ist. Dadurch wird die Taste 1′ in eine Stel­lung gebracht, in der das tastenfeste Sperrelement 5′ bei weiterer Betätigung nicht mehr mit dem gehäusefesten Element 6′ in Eingriff kommt. Bei weiterem Druck auf die Betätigungsfläche 2′ be­wegt sich die Taste translatorisch in Öffnungsrich­ tung weiter. Da der gehäusefeste Anschlag 10 nur in einer Richtung auf die Taste wirkt, wird der Taste 1′ unter Einwirkung von Beschleunigungskräf­ten, nur durch den Anlenkpunkt 12 der Feder 7 ein Widerstand entgegengesetzt. Bei der dargestellten Lage des Massenschwerpunktes 8′ wird sich dadurch die Taste 1′ in der in Figur 2 gezeigten gekippten Stellung nach unten bewegen, so daß das Sperrelement 5′ in Eingriff mit dem gehäusefesten Element 6′ gelangt und dadurch eine weitere Öff­nungsbewegung der Taste sperrt.In the remaining figures, the button is made in one piece. In Figure 2, a housing-fixed stop 10 is provided to turn the key 1 ', in its rest position about the point 9, in the position shown. This is done by the force of the spring 7. When the button 1 'is pressed on the actuating surface 2', a pressure which is directed approximately perpendicular to this actuating surface 2 '. As a result, the key 1 'is brought into a position in which the key-fixed locking element 5' no longer comes into engagement with the housing-fixed element 6 'upon further actuation. With further pressure on the actuating surface 2 ', the button moves translationally in the opening direction tung continue. Since the housing-fixed stop 10 acts only in one direction on the key, the key 1 'under the action of acceleration forces, only by the pivot point 12 of the spring 7, a resistance. In the position of the center of gravity 8 'shown, the key 1' will move downwards in the tilted position shown in FIG. 2, so that the locking element 5 'comes into engagement with the element 6' fixed to the housing and thereby blocks a further opening movement of the key .

In Figur 3 liegt der Massenschwerpunkt 8′ der Taste 1′ in der Wirklinie der Feder 7. Bei einem Druck auf die Betätigungsfläche 2′ kippt die Taste entgegen der Kraft der Feder 13 über den Anlenkpunkt 12′ der Feder 7. Dadurch gelangt wieder­um das Sperrelement 5′ außer Eingriff mit dem gehäu­sefesten Element 6′. Wirkt eine Beschleunigung auf das Schloß, ist der Massenschwerpunkt 8′ bestrebt, sich auf der angedeuteten Linie nach unten zu bewe­gen. Dabei wirken keinerlei Kippkräfte auf die Taste 1′, die ein Kippen ihrerseits entgegen der Kraft der Feder 13 bewirken können. Im Falle, daß der Massenschwerpunkt 8′ oberhalb dieser Linie liegt, würde sogar ein Kippmoment in entgegengesetz­ ter Richtung auf die Taste wirken. In beiden Fällen käme das Sperrelement 5′ sicher in Eingriff mit dem gehäusefesten Element 6′.In Figure 3, the center of gravity 8 'of the key 1' in the line of action of the spring 7. When pressed on the actuating surface 2 ', the button tilts against the force of the spring 13 via the pivot point 12' of the spring 7. This in turn arrives at the locking element 5 'out of engagement with the housing-fixed element 6'. Has an acceleration on the castle, the center of gravity 8 'strives to move down the indicated line. No tilting forces act on the key 1 ', which in turn can cause tilting against the force of the spring 13. In the event that the center of gravity 8 'is above this line, even a tilting moment would be opposed act in the direction of the button. In both cases, the locking element 5 'would come into engagement with the housing-fixed element 6'.

Beim Ausführungsbeispiel nach Figur 4 wird die Taste 1′ durch die Feder 13′ in ihrer Ruhestellung gehalten. Bei einem Auslösedruck etwa senkrecht zur Betätigungsfläche 2′ wirkt bei richtiger Dimensio­nierung der Federn 13′ und 7 kein resultierendes Kippmoment auf die Taste 1′, so daß der gesamte Öff­nungshub aus einer rein translatorischen Bewegung besteht.
Beim Auftreten von Beschleunigungskräften wirkt der Anlenkpunkt 12 der Feder 7 als Widerlager, so daß bei einer Bewegung des Massenschwerpunktes 8′, ent­sprechend den Beschleunigungskräften, auf die Taste 1′ ein Kippmoment ausgeübt wird und das Sperrelement 5′ mit dem gehäusefesten Element 6′ in Eingriff kommt. Hierbei ist selbstverständlich eine richtige Dimensionierung des Massenschwerpunktes 8′ und der Feder 13′ zu berücksichtigen.In the embodiment of Figure 4, the key 1 'is held by the spring 13' in its rest position. At a trigger pressure approximately perpendicular to the actuating surface 2 'acts with the correct dimensioning of the springs 13' and 7 no resulting tilting moment on the key 1 ', so that the entire opening stroke consists of a purely translational movement.
When acceleration forces occur, the articulation point 12 of the spring 7 acts as an abutment, so that when the center of gravity 8 'moves, corresponding to the acceleration forces, the key 1' is exerted a tilting moment and the locking element 5 'engages with the element 6' fixed to the housing is coming. Of course, correct dimensioning of the center of gravity 8 'and the spring 13' must be taken into account here.

Claims (9)

1. Schloß für ein Kraftfahrzeugsicherheitsgurtsy­stem zur Aufnahme und Verriegelung einer Ein­steckzunge mit einem Riegel zur Festlegung der Zunge, der zwischen einer Entriegelungs- und Verriegelungsstellung bewegbar ist, einem feder­belasteten Auswerfer, der die Zunge in der Entriegelungsstellung des Riegels aus dem Schloßgehäuse drückt und einer ebenfalls feder­belasteten, in Einschubrichtung der Zunge ver­schiebbaren Taste, durch die sich der Riegel in seine Entriegelungsstellung bewegen läßt, und die durch eine auf das Schloß in entgegengesetz­ter Richtung zum Auslösehub der Taste einwirken­de Beschleunigung blockiert wird,
dadurch gekennzeichnet,
daß zumindest ein Teil der Taste (1,2, 1′) zu­sätzlich kippbar gelagert ist.1. Lock for a motor vehicle seat belt system for receiving and locking a tongue with a latch for fixing the tongue, which is movable between an unlocking and locking position, a spring-loaded ejector, which presses the tongue in the unlocked position of the bolt from the lock housing and a spring-loaded , key which can be moved in the direction of insertion of the tongue, by means of which the bolt can be moved into its unlocked position and which is blocked by an acceleration acting on the lock in the opposite direction to the release stroke of the key,
characterized by
that at least part of the button (1,2, 1 ') is additionally tiltable. 2. Schloß für ein Kraftfahrzeugsicherheitsgurtsy­stem nach Anspruch 1,
dadurch gekennzeichnet,
daß die Taste aus einem translatorisch bewegba­ren Funktionsteil (1) und einem damit gelenkver­bundenen kippbaren Betätigungsteil (2), das mit mindestens einem Sperrglied (5) versehen ist, besteht (Fig. 1).2. Lock for a motor vehicle seat belt system according to claim 1,
characterized by
that the button consists of a translationally movable functional part (1) and an articulated tiltable actuating part (2) which is provided with at least one locking member (5) (Fig. 1). 3. Schloß für ein Kraftfahrzeugsicherheitsgurtsy­stem nach Anspruch 2,
dadurch gekennzeichnet,
daß das Sperrglied (5) nur bei einer translator­ischen Bewegung der Taste (1, 2) mit mindestens einem gehäusefesten Element (6) in Eingriff kommt.3. Lock for a motor vehicle seat belt system according to claim 2,
characterized by
that the locking member (5) only comes into engagement with at least one housing-fixed element (6) during a translatory movement of the key (1, 2). 4. Schloß für ein Kraftfahrzeugsicherheitsgurtsy­stem nach Anspruch 2,
dadurch gekennzeichnet,
daß das Funktionsteil (1) und das Betätigungs­teil (2) der Taste über eine Filmscharnier ver­bunden, einteilig ausgeführt sind und eine Fe­der (4) am Betätigungsteil (2) und/oder am Funk­tionsteil (1) angespritzt ist.4. Lock for a motor vehicle seat belt system according to claim 2,
characterized by
that the functional part (1) and the actuating part (2) of the button are connected via a film hinge, are made in one piece and a spring (4) is molded onto the actuating part (2) and / or onto the functional part (1). 5. Schloß für ein Kraftfahrzeugsicherheitsgurtsy­stem nach Anspruch 1,
dadurch gekennzeichnet,
daß die Taste (1′) bei Betätigung erste eine Kippbewegung um den Anlenkpunkt (12, 12′) der Tastenfeder (7) ausführt und dann erst in die translatorische Bewegung des Öffnungshubes über­geht (Fig. 2, 3).5. Lock for a motor vehicle seat belt system according to claim 1,
characterized,
that the key (1 ') when actuated first executes a tilting movement around the articulation point (12, 12') of the key spring (7) and then only changes into the translational movement of the opening stroke (Fig. 2, 3). 6. Schloß für ein Kraftfahrzeugsicherheitsgurtsy­stem nach Anspruch 5,
dadurch gekennzeichnet,
daß die Taste (1′) mit mindestens einem Sperr­element (5′) versehen ist, welches bei einer Be­schleunigung des Schlosses entgegen dem Öff­nungshub der Taste in Eingriff mit einem gehäu­sefesten Element (6′) kommt (Fig. 3).6. Lock for a motor vehicle seat belt system according to claim 5,
characterized by
that the key (1 ') is provided with at least one locking element (5') which, when the lock is accelerated against the opening stroke of the key, comes into engagement with a housing-fixed element (6 ') (Fig. 3). 7. Schloß für ein Kraftfahrzeugsicherheitsgurtsy­stem nach Anspruch 6,
dadurch gekennzeichnet,
daß sich der Anlenkpunkt (12′) der Tasten­feder (7) nahe der Seite der Taste (1′) befin­det, die der Zunge abgewandt ist, der Massen­schwerpunkt (8′) der Taste (1′) auf der Wirkli­nie der Tastenfeder liegt, und eine Feder (13) die Taste in der der Sperrstellung zugeordneten Kippstellung hält (Fig. 3).7. lock for a motor vehicle seat belt system according to claim 6,
characterized,
that the pivot point (12 ') of the key spring (7) is near the side of the key (1') facing away from the tongue, the center of gravity (8 ') of the key (1') lies on the line of action of the key spring, and a spring (13) holds the button in the tilt position assigned to the locked position (FIG. 3). 8. Schloß für ein Kraftfahrzeugsicherheitsgurtsy­stem nach Anspruch 5,
dadurch gekennzeichnet,
daß sich der Anlenkpunkt (12) der Tasten­feder (7) nahe der Seite der Taste (1′) befin­det, die der Zunge zugewandt ist und der Massen­schwerpunkt der Taste einen möglichst großen seitlichen Abstand dazu hat, und, daß an der der Zunge abgewandten Seite der Taste (1′) ein mit einem gehäusefesten Anschlag (10) zu­sammenwirkender Vorsprung (9) vorgesehen ist (Fig. 2).8. Lock for a motor vehicle seat belt system according to claim 5,
characterized by
that the articulation point (12) of the key spring (7) is close to the side of the key (1 ') which faces the tongue and the center of gravity of the key has the greatest possible lateral distance from it, and that on the side facing away from the tongue the key (1 ') with a housing-fixed stop (10) cooperating projection (9) is provided (Fig. 2). 9. Schloß für ein Kraftfahrzeugsicherheitsgurtsy­stem nach Anspruch 1,
dadurch gekennzeichnet,
daß die Taste (1′) von einer Feder (13′) in der Freigabestellung gehalten wird, beim Lösen des Schlosses eine translatorische Bewegung durch­führt und bei einer entgegengerichteten, auf das Schloß einwirkenden Beschleunigung um den der Zunge zugewandten Anlenkpunkt (12) der Ta­stenfeder (7) entgegen der Wirkung der Feder (13′) in die durch ein tastenfestes und ein gehäusefestes Sperrelement (5′, 6′) defi­nierte Sperrstellung kippt (Fig. 4).9. lock for a motor vehicle seat belt system according to claim 1,
characterized by
that the key (1 ') is held by a spring (13') in the release position, carries out a translational movement when the lock is released and, when the lock is subjected to opposite acceleration, around the pivot point (12) of the key spring (12) facing the tongue 7) counteracts the action of the spring (13 ') in the locking position defined by a key-fixed and a housing-fixed locking element (5', 6 ') (Fig. 4).
EP89119288A 1988-10-19 1989-10-17 Buckle for a safety belt system in a motor vehicle Expired - Lifetime EP0364970B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3835508A DE3835508A1 (en) 1988-10-19 1988-10-19 LOCK FOR A MOTOR VEHICLE SAFETY BELT SYSTEM
DE3835508 1988-10-19

Publications (3)

Publication Number Publication Date
EP0364970A2 true EP0364970A2 (en) 1990-04-25
EP0364970A3 EP0364970A3 (en) 1991-07-03
EP0364970B1 EP0364970B1 (en) 1994-01-19

Family

ID=6365402

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89119288A Expired - Lifetime EP0364970B1 (en) 1988-10-19 1989-10-17 Buckle for a safety belt system in a motor vehicle

Country Status (3)

Country Link
US (1) US5029369A (en)
EP (1) EP0364970B1 (en)
DE (2) DE3835508A1 (en)

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Also Published As

Publication number Publication date
DE3835508A1 (en) 1990-05-03
EP0364970A3 (en) 1991-07-03
US5029369A (en) 1991-07-09
DE58906761D1 (en) 1994-03-03
EP0364970B1 (en) 1994-01-19
DE3835508C2 (en) 1990-08-09

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