EP0212507B1 - Seat belt safety buckle - Google Patents

Seat belt safety buckle Download PDF

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Publication number
EP0212507B1
EP0212507B1 EP86111015A EP86111015A EP0212507B1 EP 0212507 B1 EP0212507 B1 EP 0212507B1 EP 86111015 A EP86111015 A EP 86111015A EP 86111015 A EP86111015 A EP 86111015A EP 0212507 B1 EP0212507 B1 EP 0212507B1
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EP
European Patent Office
Prior art keywords
lever
belt buckle
sliding knob
bolt
buckle according
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
EP86111015A
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German (de)
French (fr)
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EP0212507B2 (en
EP0212507A2 (en
EP0212507A3 (en
Inventor
Herbert Krützfeld
Holger Harenberg
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Autoflug GmbH
Original Assignee
Autoflug GmbH
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Publication date
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Application filed by Autoflug GmbH filed Critical Autoflug GmbH
Publication of EP0212507A2 publication Critical patent/EP0212507A2/en
Publication of EP0212507A3 publication Critical patent/EP0212507A3/en
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Publication of EP0212507B1 publication Critical patent/EP0212507B1/en
Publication of EP0212507B2 publication Critical patent/EP0212507B2/en
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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 invention relates to a seat belt buckle for receiving and locking a tongue with a housing and an insertion path arranged therein containing a spring-loaded ejector for the tongue, with a led in the lock and cooperating with the tongue recess in the event of locking, which has a tongue in an associated recess the lock holds, and a sliding button in the housing transverse to the plane of movement of the bolt to release the lock.
  • Safety belt fasteners generally have the problem that the bolt opens automatically under extreme conditions, in particular under the action of acceleration forces acting on the fastener in individual cases, when the operating or securing parts actuating the bolt or the bolt itself are released from their own due to their inertia move the intended position for the locking case and ultimately the bolt is released from its locking position.
  • a generic slide key closure is known from DE-OS-2 828 049, in which the bolt can be moved perpendicular to the tongue and is secured by a projection arranged on the slide key driving over the bolt in the event of locking against acceleration forces acting in the plane of the movement path of the bolt.
  • acceleration forces can also act on the buckle in the plane of action of the slide button actuating the bolt, for example if the buckle is moved in its longitudinal direction as part of a tightening of the seat belt in the event of an accident. If, in such a case, high acceleration forces occur in the plane of action of the slide button, this can lead to the slide button remaining due to its inertia while the closure body is moving, so that the two parts experience relative mobility with respect to one another. This means that the sliding button would then perform an opening movement and release the bolt for unlocking.
  • EP-A-0 052 160 refers to impacts acting in the plane of action of the sliding key and it is proposed to achieve a certain mass compensation by supporting the pivot lever in its mounting in the housing, but this solution leaves the inertia of the Slightly pushing the latch-operated slide button. In addition, the mass balance on the bearing of the swivel lever itself cannot counteract the expected acceleration forces with sufficient certainty.
  • the invention is therefore based on the object of setting up a slide key lock of the type mentioned in such a way that the lock is also shock-proof against acceleration forces acting in the direction of the plane of action of the slide key.
  • the invention has the advantage that the opening or insertion forces in the closure according to the invention are hardly higher than a non-shock-proof closure, since the additional balancing mass to be moved is of little importance here. Only when the acceleration occurs does the mass develop its effect due to the inertia, which is reinforced by the bearing of the mass offset from the line of action of the sliding key.
  • the solution according to the invention can be applied to all types of sliding key locks, in that the balancing mass is selected in accordance with the mass of the sliding key and is arranged on the sliding key itself via the lever.
  • the size of the mass can also be influenced by the selection of the position of the mass storage in relation to the sliding key level, the mass being able to be smaller with a bearing point of the lever arm which is closer to the sliding key level, but with the acceptance of a larger pivoting path of the compensating mass.
  • Another embodiment of the invention has the particular advantage that the shock protection in the form of the lever-guided balancing mass is arranged in the lock independently of the locking mechanism, in that the lever carrying the balancing mass is mounted on a part fixed to the housing in such a way that the lever is located between the two in the event of a release its storage and the sliding button or a part connected to the sliding button in terms of movement.
  • the invention also extends to the fact that the balancing mass can be arranged laterally offset to the sliding button and prevents the movement of the sliding button in the event of a release via a lever which acts correspondingly parallel to the closure plane.
  • a seat belt buckle 10 has a U-shaped housing 11, in which a lock plate 13, which is spaced from the bottom of the housing 11, is arranged to fix the insertion path 14 for the insertion tongue 12 (FIG. 2).
  • a bolt 16 is pivotally mounted in a recess 15 perpendicular to the lock plate plane, in that the bolt 16 extends through the recess 15 with a bearing extension 17 and projects into the track 14.
  • a spring-loaded ejector is arranged in front of the bearing extension 17 in the web 14 towards the open end thereof.
  • the bolt 16 extends forward from its mounting and has a locking projection 18, with which it engages through the lock plate 13 in a further recess in the locking position and interlockingly engages in the associated recess of the inserted tongue 12 (FIG. 2).
  • the bolt 16 has an encapsulation 19, which also ensures a low-friction rotary bearing 20 of the bolt 16 in the recess 15 and, at the same time, forms a support 21 in the upper part of the closure 10 for the further closure parts to be described, which interact with the bolt 16.
  • a sliding button 23 is arranged above the insertion funnel 22 for the tongue 12 and can be moved parallel to the track 14.
  • a plunger 24 is inserted into the sliding key 23 and is arranged so as to be longitudinally displaceable in the housing 11, and couples the movements of the sliding key 23 and the bolt 16 to one another.
  • a spring 26 which surrounds the plunger 24 and which is supported on the one hand on the sliding button 23 and on the other hand on a flange 27 of the plunger 24.
  • At the rear end of the plunger 24 there is a further spring 28, which is supported between the supporting encapsulation 19, 21 of the bolt 16 and a lever arm 29 for holding the balancing mass 30.
  • the lever 29 is rotatably mounted on an axle 31 mounted laterally inward on the housing 11 of the closure 10 and engages with its upper end on a cam 32 projecting laterally from the tappet 24 in such a way that the lever 29 and tappet 24 can be rotated relative to one another.
  • the upper end of the lever 29 has the possible end positions of the lever 29 each assigned stop surfaces 33, 34, which each assume a vertical position in the end positions of the lever 29 (FIG. 1 or FIG. 2), and on which the spring 28 of the Ram 24 supports each.
  • an arm 29 is held on both sides of the tappet 24 on cams 32 which protrude on both sides and, owing to the symmetrical division, only has to carry half of the total balancing mass 30 required.
  • a pivot lever 35 is provided, which is supported by plastic-molded bearing projections 36 in slots 37 recessed in the lateral legs of the U-housing 11.
  • the bearing projections 36 have a hanging, crescent-shaped shape, which surround the associated links 37 with play, the link shape being essentially adapted to the shape of the bearing projections 36.
  • the scenes 37 have extensions 38 which are drawn upwards over the crescent shape and into which the edges of the bearing projections 36 of the pivot lever 35 can engage in their respective end positions (FIG. 2 and FIG. 3).
  • a projection 39 is arranged, which prevents the pivoted lever 35 braced in the locking position from pivoting into the open extension 38 (FIG. 2).
  • the pivot lever 35 pivots in the locking position of the closure ( Figure 2) on a nose 40 on the bolt 16 and holds the latter in the locked position.
  • the upper end of the pivot lever 35 interacts with both the slide button 23 and the tappet 24, in that the slide button 23 has a shoulder 41 with a bevel 42 and in that on the other side of the pivot lever 35 on the tappet 24, the pivot lever 35 for longitudinal displacements of the tappet 24 actuating further cams 43 is arranged.
  • the closure works as follows: the plunger 24 is in a central position and holds the slide button 23 in its foremost position on the one hand via the relaxed springs 26, 28 and on the other hand the latch 16 in the swiveled-up position which releases the web 14 .
  • the tongue 12 If the tongue 12 is now inserted into the web 14 between the housing 11 and the lock plate 13, it first actuates the spring-loaded ejector, not shown, which in turn presses on the bearing extension 17 of the bolt 16. If the tongue 12 is inserted sufficiently far, the bolt 16 pivots under pressure on its bearing extension 17 about its bearing point 20 and falls with the locking projection 18 through the recess into the tongue recess of the tongue 12 and locks it.
  • the locking bar 16 presses with its encapsulation 19 or the support 21 via the spring 28 onto the plunger 24 on the one hand and onto the stop surfaces 33, 34 of the lever arm 29 on the other hand.
  • the sliding key spring 26 is slightly biased.
  • a further shock protection of the closure also results from the fact that, in the locked position, the projection 39 in the link 37 prevents pivoting of the bearing projections 36 and thus pivoting of the pivot lever 35.
  • the sliding button 23 is pushed into the lock housing 11 and presses with the extension 41 onto the pivot lever 35 in order to pivot it clockwise into the release position for the bolt 16.
  • the cam 43 first clears the way for the pivoting of the pivot lever 35 via the sliding key attachment 41, with the support projections 36 being pushed to the right in the slots 37 formed with play due to this initially still acting support on the attachment 41, so that the respective support projection 36 past the protrusion 39 securing it in the locking position into the extension 38 in the sense of a pivoting movement.
  • the displacement of the plunger 24 further leads to the fact that the further cam 32 also rotates the lever arm 29 in a clockwise direction, as a result of which the spring 28 is tensioned until a pivoting of the bolt 16 out of the locking recess by the stop of the plunger 24 on the support 21, 19 the tongue 12 out with their release.
  • the parts then return to the starting position shown in FIG. 1 by relaxing the springs 26, 28.
  • FIG. 4 shows the fastening of the closure via a rivet 46 to an anchoring part 47, which is usually connected to a part fixed to the vehicle or a pretensioning device therefor.
  • the housing 11 of the closure 10 consists of a one-piece lock plate 50, which is bent in the area of its attachment to an anchoring part 53 to two legs 51, 52 of equal length, between which the lock tongue 12 against the action of an ejector 54 is insertable.
  • a locking member 56 is rotatably mounted perpendicular to the insertion plane for the lock tongue 12 in a joint 57, the design of the locking mechanism is not the subject of the invention.
  • the sliding button 23 arranged above the insertion funnel for the tongue 12 is guided via projections between the legs 51, 52 of the lock plate 50.
  • a leaf spring 58 is clamped in a bracket 59 on the upper side of the upper leg 51 facing the sliding button 23. which reaches the sliding button 23 with its free end in the rest position.
  • the spring 58 is slightly bent back against the direction of actuation of the sliding button 23 and carries the balancing mass 30 on the upper side thereby formed.
  • the sliding button 23 has on its underside in the area of the spring end 60 a recess 61 with a stop 62, into which the spring end 60 can be pivoted in the event of tripping.
  • the shown direct connection of the sliding button and lever can also be replaced by an indirect connection, in that the spring designed as a lever engages, for example, an actuating element for the locking mechanism, which is generally designed on the sliding button, and in this way prevents a sliding movement of the sliding button.
  • a rigid lever can also be provided as a carrier of the mass, which is arranged rotatably fixed to the housing and is otherwise spring-loaded.
  • the lever it is particularly advantageous to design the lever as an angle lever, one arm of which interacts with a balancing mass arranged in the manner of a pendulum, and the other arm of which engages directly or indirectly on the sliding button in the sense of blocking its opening movement.
  • an angle lever 65 is rotatably supported on the lock housing 11 by means of journals 66, so that in the rest position one arm of the angle lever 65 extends into the plane of movement of the sliding key 23 and the other arm runs perpendicularly thereto in the lock body 11.
  • the latter is operatively connected via an elongated hole guide 67 with a pin 68 of an inertial mass 69 engaging therein, which in turn is movably guided in a frame 70 firmly connected to the lock housing 11.
  • the inertial mass 69 is provided with metallic inserts 71, but can also be made entirely of metal.
  • the inertial mass 69 is held in its rest position by means of a compression spring 72 such that the angular lift 65 connected to the inertial mass 69 via the pin-slot connection 67, 68 is not pivoted, and it lies against the front stop 73 of the frame 70 .
  • the spring 72 is held on a pin 74 of the frame 70, the front end of which simultaneously forms a stop 75 for the displacement of the inertial mass 69.
  • the sliding button 23 has on its lower side facing the angle lever 65 a shoulder 76 with a locking edge 77, which with. the angle lever 65 cooperates.
  • the shock protection according to the above-described embodiment works in broad accordance with the previously described embodiments as follows: In the rest position of the inertial mass 69, this is pressed by the spring 72 against the stop 73 of the frame 70; due to the positive connection 67, 68 with the angle lever 65, its free leg is also located outside the shoulder 76 of the sliding key 23, so that a free movement of the sliding key 23 in the sense of a normal actuation of the lock mechanism is possible.
  • the inertial mass 69 compresses the compression spring 72 due to its relative movement to the lock housing 11 until the inertial mass 69 abuts the stop 75 of the frame 70.
  • the exemplary embodiment according to FIGS. 8 and 9 shows an alternative to the previously described embodiment insofar as the corresponding arm of the angle lever 65 is connected directly and in one piece to the inertial mass 69, this inertia arm 69 of the angle lever 65 also being loaded by the compression spring 72. Otherwise, the same movement sequence results as described for the exemplary embodiment according to FIGS. 6 and 7.

Landscapes

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

Description

Die Erfindung betrifft einen Sicherheitsgurtverschluß zur Aufnahme und Verriegelung einer Einsteckzunge mit einem Gehäuse und einem darin angeordneten einen unter Federwirkung stehenden Auswerfer enthaltenden Einschubweg für die Einsteckzunge, mit einem im Verschluß geführten und mit der Zungenausnehmung im Verriegelungsfall zusammenwirkenden Riegel, der eine Einsteckzunge in einer zugeordneten Ausnehmung des Verschlusses hält, und einer im Gehäuse quer zur Bewegungsebene des Riegels geführten Schiebetaste zur Aufhebung der Verriegelung.The invention relates to a seat belt buckle for receiving and locking a tongue with a housing and an insertion path arranged therein containing a spring-loaded ejector for the tongue, with a led in the lock and cooperating with the tongue recess in the event of locking, which has a tongue in an associated recess the lock holds, and a sliding button in the housing transverse to the plane of movement of the bolt to release the lock.

Sicherheitsgurtverschlüssen ist allgemein das Problem zu eigen, daß sich der Riegel unter extremen Bedingungen, insbesondere unter der Wirkung von auf den Verschluß im Einzelfall einwirkenden Beschleunigungskräften selbsttätig öffnet, wenn die den Riegel betätigenden Bedienungs- oder Sicherungsteile oder der Riegel selbst sich aufgrund ihrer Masseträgheit aus ihrer für den Verriegelungsfall vorgesehenen Stellung bewegen und so letztlich der Riegel aus seiner Verriegelungsstellung freikommt.Safety belt fasteners generally have the problem that the bolt opens automatically under extreme conditions, in particular under the action of acceleration forces acting on the fastener in individual cases, when the operating or securing parts actuating the bolt or the bolt itself are released from their own due to their inertia move the intended position for the locking case and ultimately the bolt is released from its locking position.

Ein gattungsgemäßer Schiebetastenverschluß ist aus der DE-OS-2 828 049 bekannt, bei dem der Riegel senkrecht zur Einsteckzunge beweglich und durch einen an der den Riegel überfahrenden Schiebetaste angeordneten Vorsprung im Verriegelungsfall gegen in der Ebene der Bewegungsbahn des Riegels wirkende Beschleunigungskräfte gesichert ist. Nun können jedoch auch in der Wirkungsebene der den Riegel betätigenden Schiebetaste Beschleunigungskräfte auf den Verschluß einwirken, beispielsweise wenn der Verschluß im Rahmen einer Strammung des Sicherheitsgurtes im Unfallgeschehen in seiner Längsrichtung bewegt wird. Kommt es in einem solchen Fall in der Wirkungsebene der Schiebetaste zu hohen Beschleunigungskräften, so kann dies dazu führen, daß die Schiebetaste aufgrund ihrer Masseträgheit verharrt, während sich der Verschlußkörper bewegt, die beiden Teile also eine relative Beweglichkeit zueinander erfahren. Das bedeutet, daß somit die Schiebetaste eine Öffnungsbewegung vollführen und den Riegel zur Entriegelung freigeben würde.A generic slide key closure is known from DE-OS-2 828 049, in which the bolt can be moved perpendicular to the tongue and is secured by a projection arranged on the slide key driving over the bolt in the event of locking against acceleration forces acting in the plane of the movement path of the bolt. Now, however, acceleration forces can also act on the buckle in the plane of action of the slide button actuating the bolt, for example if the buckle is moved in its longitudinal direction as part of a tightening of the seat belt in the event of an accident. If, in such a case, high acceleration forces occur in the plane of action of the slide button, this can lead to the slide button remaining due to its inertia while the closure body is moving, so that the two parts experience relative mobility with respect to one another. This means that the sliding button would then perform an opening movement and release the bolt for unlocking.

Bei einer anderen Bauart eines Schiebetastenverschlusses, wie er in der EP-A-0 052 160 beschrieben ist, ist der die Einsteckzunge verriegelnde Riegel in der Verriegelungsposition durch einen Schwenkhebel senkrecht zur Bahn für die Einsteckzunge gesichert, so daß in der Schwenkebene des Riegels auf den Verschluß einwirkende Schläge oder Beschleunigungskräfte auch bei dieser Bauart des Verschlusses keine Entriegelung herbeiführen können. Da jedoch die Verschwenkebene des den Riegel sichernden Schwenkhebels ebenfalls in Richtung der Schiebetastenebene wirkender Beschleunigungskräfte angeordnet ist, kann die gleichermaßen wirkende Masseträgheit des Schwenkhebels gemeinsam mit derjenigen der Schiebetaste auch bei diesem Verschluß eine Freigabe des Riegels aus seiner Verriegelungsstellung bewirken. Eine Schocksicherung dieses Verschlusses in Wirkungsrichtung der Schiebetaste ist somit nicht gegeben.In another type of sliding key lock, as described in EP-A-0 052 160, the latch locking the insert tongue is secured in the locked position by a pivot lever perpendicular to the path for the insert tongue, so that in the pivot plane of the latch on the Shocks or accelerating forces acting on the closure cannot bring about unlocking even with this type of closure. However, since the pivoting plane of the locking lever securing the bolt is also arranged in the direction of the sliding key plane of acceleration forces, the equally acting inertia of the pivoting lever, together with that of the sliding key, can also release the bolt from its locked position with this closure. A shock protection of this lock in the direction of action of the slide button is therefore not given.

Zwar ist in der EP-A-0 052 160 auf in der Wirkungsebene der Schiebetaste wirkende Stöße Bezug genommen und es ist vorgeschlagen, einen gewissen Masseausgleich durch die Abstützung des Schwenkhebels in seiner Lagerung im Gehäuse zu verwirklichen, jedoch läßt diese Lösung die Masseträgheit der den Riegel betätigenden Schiebetaste völlig außer acht. Hierzu kommt, daß der Masseausgleich an der Lagerung des Schwenkhebels selbst den zu erwartenden Beschleunigungskräften nicht ausreichend sicher entgegenwirken kann.Although EP-A-0 052 160 refers to impacts acting in the plane of action of the sliding key and it is proposed to achieve a certain mass compensation by supporting the pivot lever in its mounting in the housing, but this solution leaves the inertia of the Slightly pushing the latch-operated slide button. In addition, the mass balance on the bearing of the swivel lever itself cannot counteract the expected acceleration forces with sufficient certainty.

Der Erfindung liegt daher die Aufgabe zugrunde, einen Schiebetastenverschluß der eingangs genannten Gattung so einzurichten, daß der Verschluß auch in Richtung der Wirkungsebene der Schiebetaste wirkenden Beschleunigungskräften gegenüber schocksicher ist. Die erfindungsgemäße Lösung dieser Aufgabe ergibt sich einschließlich vorteilhafter Ausgestaltungen und Weiterbildungen aus dem Inhalt der Patentansprüche, welche dieser Beschreibung vorangestellt sind.The invention is therefore based on the object of setting up a slide key lock of the type mentioned in such a way that the lock is also shock-proof against acceleration forces acting in the direction of the plane of action of the slide key. The achievement of this object, including advantageous refinements and developments, results from the content of the claims, which precede this description.

Mit der Erfindung ist der Vorteil verbunden, daß die Öffnungs- bzw. Einsteckkräfte bei dem erfindungsgemäßen Verschluß gegenüber einem nicht schocksicheren Verschluß kaum höher sind, da die zusätzlich zu bewegende Ausgleichsmasse hier kaum ins Gewicht fällt. Lediglich bei der auftretenden Beschleunigung entfaltet die Masse aufgrund der Masseträgheit ihre Wirkung, die durch die versetzt zur Wirkungslinie der Schiebetaste vorgenommene Lagerung der Masse verstärkt wird.The invention has the advantage that the opening or insertion forces in the closure according to the invention are hardly higher than a non-shock-proof closure, since the additional balancing mass to be moved is of little importance here. Only when the acceleration occurs does the mass develop its effect due to the inertia, which is reinforced by the bearing of the mass offset from the line of action of the sliding key.

Generell ist die erfindungsgemäße Lösung auf alle Arten von Schiebetastenverschlüssen anwendbar, indem die Ausgleichmasse entsprechend der Masse der Schiebetaste gewählt und über den Hebel an der Schiebetaste selbst angeordnet wird. Dasgleiche gilt für die Verbindung der Schiebetaste mit einem Stoßdämpfer. Über die Auswahl der Stellung der Massenlagerung zur Schiebetastenebene ist die Größe der Masse zudem beeinflußbar, wobei mit einer der Schiebetastenebene näherkommenden Lagerstelle des Hebelarms die Masse kleiner werden kann, allerdings unter Inkaufnahme eines größeren Schwenkweges der Ausgleichsmasse.In general, the solution according to the invention can be applied to all types of sliding key locks, in that the balancing mass is selected in accordance with the mass of the sliding key and is arranged on the sliding key itself via the lever. The same applies to the connection of the sliding button with a shock absorber. The size of the mass can also be influenced by the selection of the position of the mass storage in relation to the sliding key level, the mass being able to be smaller with a bearing point of the lever arm which is closer to the sliding key level, but with the acceptance of a larger pivoting path of the compensating mass.

Nach einem weiteren Ausführungsbeispiel der Erfindung ist es vorteilhaft, die Ausgleichsmasse durch einen mit der Schiebetaste zusammenwirkenden Stoßdämpfer zu ersetzen, der für den Ausgleich der auf die Schiebetaste wirkenden Beschleunigungskräfte sorgt.According to a further exemplary embodiment of the invention, it is advantageous to replace the balancing mass with a shock absorber which interacts with the sliding button and which balances the acceleration forces acting on the sliding button.

Bei einer besonderen, in der Zeichnung erläuterten vorteilhaften Ausführungsform eines Schiebetastenverschlusses, bei welchem der Riegel im Gehäuse des Verschlusses schwenkbeweglich gelagert und in der Verriegelungsstellung über einen im Gehäuse gelagerten Schwenkhebel gesichert ist, wirkt die Ausgleichsmasse über den Hebel auf einen Stößel, der im Verschlußgehäuse in Wirkungsrichtung der Schiebetaste längsverschiebbar geführt ist und die Bewegungen der Schiebetaste einerseits und des schwenkbaren Riegels andererseits miteinander verkoppelt.In a special, advantageous embodiment of a sliding key lock explained in the drawing, in which the bolt in the housing of the lock is pivotally mounted and is secured in the locking position by a pivot lever mounted in the housing, the balancing mass acts via the lever on a plunger which is in the lock housing Direction of action of the sliding key is guided in a longitudinally displaceable manner and the movements of the sliding key on the one hand and the pivotable bolt on the other hand are coupled to one another.

Mit einem weiteren Ausführungsbeispiel der Erfindung ist der besondere Vorteil verbunden, daß die Schocksicherung in Form der hebelgeführten Ausgleichsmasse unabhängig von dem Verriegelungsmechanismus im Schloß angeordnet ist, indem der die Ausgleichsmasse tragende Hebel an einem gehäusefesten Teil derart gelagert ist, daß sich der Hebel im Auslösefall zwischen seiner Lagerung und der Schiebetaste bzw. einem mit der Schiebetaste bewegungsmäßig verbundenen weiteren Teil verspannt. Damit ergibt sich die Möglichkeit, jede beliebige Bauform eines Schiebetastenverschlusses ohne konstruktive Änderung seines Verriegelungsmechanismus mit der erfindungsgemäßen Schocksicherung zu versehen.Another embodiment of the invention has the particular advantage that the shock protection in the form of the lever-guided balancing mass is arranged in the lock independently of the locking mechanism, in that the lever carrying the balancing mass is mounted on a part fixed to the housing in such a way that the lever is located between the two in the event of a release its storage and the sliding button or a part connected to the sliding button in terms of movement. This results in the possibility of providing any design of a sliding key lock with the shock protection according to the invention without a structural change in its locking mechanism.

Die Erfindung erstreckt sich auch darauf, daß die Ausgleichsmasse seitlich versetzt zur Schiebetaste angeordnet sein kann und über einen entsprechend parallel zur Verschlußebene wirkenden Hebel die Bewegung der Schiebetaste im Auslösefall hindert.The invention also extends to the fact that the balancing mass can be arranged laterally offset to the sliding button and prevents the movement of the sliding button in the event of a release via a lever which acts correspondingly parallel to the closure plane.

In der Zeichnung sind Ausführungsbeispiele der Erfindung wiedergegeben, welche nachstehend beschrieben sind.In the drawing, exemplary embodiments of the invention are shown, which are described below.

Es zeigen:

  • Fig. 1 einen Verschluß im Längsschnitt in Bereitschaftsstellung,
  • Fig. 2 den Verschluß im Längsschnitt in verriegelter Stellung,
  • Fig. 3 den Verschluß im Längsschnitt im Augenblick der Entriegelung,
  • Fig.4 4 ein anderes Ausführungsbeispiel des Verschlusses mit Stoßdämpfer,
  • Fig. 6 ein weiteres Ausführungsbeispiel der Schocksicherung in entriegelter Stellung,
  • Fig. 7 das Ausführungsbeispiel gemäß Figur 6 bei wirksamer Schocksicherung,
  • Fig. 8 ein zusätzliches Ausführungsbeispiel der Schocksicherung in entriegelter Stellung,
  • Fig. 9 das Ausführungsbeispiel gemäß Figur 8 bei wirksamer Schocksicherung.
Show it:
  • 1 is a closure in longitudinal section in the standby position,
  • 2 shows the closure in longitudinal section in the locked position,
  • 3 shows the closure in longitudinal section at the moment of unlocking,
  • 4 another embodiment of the closure with shock absorber,
  • 6 shows another embodiment of the shock protection in the unlocked position,
  • 7 the embodiment according to FIG. 6 with effective shock protection,
  • 8 shows an additional exemplary embodiment of the shock protection in the unlocked position,
  • Fig. 9 shows the embodiment of Figure 8 with effective shock protection.

Ein Sicherheitsgurtverschluß 10 weist ein U-förmiges Gehäuse 11 auf, in welchem zur Festlegung der Einsteckbahn 14 für die Einsteckzunge 12 (Figur 2) eine vom Boden des Gehäuses 11 beabstandete Schloßplatte 13 angeordnet ist. In der zweiten Schloßplatte 13 ist in einer Ausnehmung 15 ein Riegel 16 senkrecht zur Schloßplattenebene schwenkbar gelagert, indem der Riegel 16 mit einem Lagerungsfortsatz 17 die Ausnehmung 15 durchgreift und in die Bahn 14 hineinragt. Wie nicht weiter dargestellt, ist vor dem Lagerungsfortsatz 17 in der Bahn 14 zu deren offenem Ende hin ein federbelasteter Auswerfer angeordnet.A seat belt buckle 10 has a U-shaped housing 11, in which a lock plate 13, which is spaced from the bottom of the housing 11, is arranged to fix the insertion path 14 for the insertion tongue 12 (FIG. 2). In the second lock plate 13, a bolt 16 is pivotally mounted in a recess 15 perpendicular to the lock plate plane, in that the bolt 16 extends through the recess 15 with a bearing extension 17 and projects into the track 14. As not shown further, a spring-loaded ejector is arranged in front of the bearing extension 17 in the web 14 towards the open end thereof.

Der Riegel 16 erstreckt sich von seiner Lagerung nach vorne und weist einen Verriegelungsvorsprung 18 auf, mit dem er in der Verriegelungsstellung die Schloßplatte 13 in einer weiteren Ausnehmung durchgreift und in die zugeordnete Ausnehmung der eingeschobenen Zunge 12 verriegelnd eingreift (Figur 2). Der Riegel 16 weist eine Umspritzung 19 auf, welche auch für eine reibungsarme Drehlagerung 20 des Riegels 16 in der Ausnehmung 15 sorgt und gleichzeitig im oberen Teil des Verschlusses 10 eine Abstützung 21 für die mit dem Riegel 16 zusammenwirkenden weiteren noch zu beschreibenden Verschlußteile ausbildet.The bolt 16 extends forward from its mounting and has a locking projection 18, with which it engages through the lock plate 13 in a further recess in the locking position and interlockingly engages in the associated recess of the inserted tongue 12 (FIG. 2). The bolt 16 has an encapsulation 19, which also ensures a low-friction rotary bearing 20 of the bolt 16 in the recess 15 and, at the same time, forms a support 21 in the upper part of the closure 10 for the further closure parts to be described, which interact with the bolt 16.

Über dem Einführtrichter 22 für die Zunge 12 ist eine Schiebetaste 23 angeordnet, die parallel zur Bahn 14 verschiebbar ist. In die Schiebetaste 23 eingesetzt und in deren Verlauf im Gehäuse 11 längsverschieblich angeordnet ist ein Stößel 24, der die Bewegungen der Schiebetaste 23 und des Riegels 16 miteinander koppelt. In einer den Stößel 24 aufnehmenden Ausnehmung 25 in der Schiebetaste 23 ist eine den Stößel 24 umgreifende Feder 26 angeordnet, die sich einerseits an der Schiebetaste 23 und andererseits an einem Flansch 27 des Stößels 24 abstützt. Am hinteren Ende des Stößels 24 befindet sich eine weitere Feder 28, die sich zwischen der abstützenden Umspritzung 19, 21 des Riegels 16 und einem Hebelarm 29 zur Halterung der Ausgleichsmasse 30 abstützt.A sliding button 23 is arranged above the insertion funnel 22 for the tongue 12 and can be moved parallel to the track 14. A plunger 24 is inserted into the sliding key 23 and is arranged so as to be longitudinally displaceable in the housing 11, and couples the movements of the sliding key 23 and the bolt 16 to one another. In a recess 25 receiving the plunger 24 in the sliding button 23 there is arranged a spring 26 which surrounds the plunger 24 and which is supported on the one hand on the sliding button 23 and on the other hand on a flange 27 of the plunger 24. At the rear end of the plunger 24 there is a further spring 28, which is supported between the supporting encapsulation 19, 21 of the bolt 16 and a lever arm 29 for holding the balancing mass 30.

Der Hebel 29 ist auf einer am Gehäuse 11 des Verschlusses 10 seitlich einwärts angebrachten Achse 31 drehbar gelagert und greift mit seinem oberen Ende an einem von dem Stößel 24 seitlich abstehenden Nocken 32 so an, daß Hebel 29 und Stößel 24 relativ zueinander drehbeweglich sind. Das obere Ende des Hebels 29 weist den möglichen Endlagen des Hebels 29 jeweils zugeordnet Anschlagflächen 33, 34 auf, die in den Endlagen des Hebels 29 (Figur 1 bzw. Figur 2) jeweils eine senkrechte Position einnehmen, und an denen sich die Feder 28 des Stößels 24 jeweils abstützt.The lever 29 is rotatably mounted on an axle 31 mounted laterally inward on the housing 11 of the closure 10 and engages with its upper end on a cam 32 projecting laterally from the tappet 24 in such a way that the lever 29 and tappet 24 can be rotated relative to one another. The upper end of the lever 29 has the possible end positions of the lever 29 each assigned stop surfaces 33, 34, which each assume a vertical position in the end positions of the lever 29 (FIG. 1 or FIG. 2), and on which the spring 28 of the Ram 24 supports each.

Wie nicht weiter dargestellt, ist zu beiden Seiten des Stößels 24 an beiderseits abstehenden Nocken 32 je ein Arm 29 gehaltert, der aufgrund der symmetrischen Aufteilung nur noch die Hälfte der ingesamt erforderlichen Ausgleichsmasse 30 tragen muß.As not shown further, an arm 29 is held on both sides of the tappet 24 on cams 32 which protrude on both sides and, owing to the symmetrical division, only has to carry half of the total balancing mass 30 required.

Zur Sicherung des Riegels 16 in der Verriegelungsstellung (Figur 2) ist ein Schwenkhebel 35 vorgesehen, der über kunststoffumspritzte Lagerungsvorsprünge 36 in in den seitlichen Schenkeln des U-Gehäuses 11 ausgesparten Kulissen 37 gelagert ist. Die Lagerungsvorsprünge 36 weisen eine hängend angeordnete halbmondförmige Gestalt auf, welche die zugeordneten Kulissen 37 mit Spiel umgreifen, wobei die Kulissenform der Gestalt der Lagerungsvorsprünge 36 im wesentlichen angepaßt ist. Die Kulissen 37 weisen über die Halbmondform nach oben gezogene Weiterungen 38 auf, in welche die Kanten der Lagerungsvorsprünge 36 des Schwenkhebels 35 in ihren jeweiligen Endlagen (Figur 2 und Figur 3) eingreifen können. An der in Verriegelungsstellung des Schwenkhebels 35 freibleibenden Weiterung 38 ist ein Vorsprung 39 angeordnet, der den in der Verriegelungsstellung verspannten Schwenkhebel 35 an einem Einschwenken in die offene Weiterung 38 hindert (Figur 2).To secure the bolt 16 in the locking position (FIG. 2), a pivot lever 35 is provided, which is supported by plastic-molded bearing projections 36 in slots 37 recessed in the lateral legs of the U-housing 11. The bearing projections 36 have a hanging, crescent-shaped shape, which surround the associated links 37 with play, the link shape being essentially adapted to the shape of the bearing projections 36. The scenes 37 have extensions 38 which are drawn upwards over the crescent shape and into which the edges of the bearing projections 36 of the pivot lever 35 can engage in their respective end positions (FIG. 2 and FIG. 3). At the free extension in the locking position of the pivot lever 35 38, a projection 39 is arranged, which prevents the pivoted lever 35 braced in the locking position from pivoting into the open extension 38 (FIG. 2).

Der Schwenkhebel 35 schwenkt in Verriegelungsposition des Verschlusses (Figur 2) auf eine Nase 40 am Riegel 16 und hält letzteren in der verriegelten Stellung fest. Das obere Ende des Schwenkhebels 35 wirkt sowohl mit der Schiebetaste 23 als auch mit dem Stößel 24 zusammen, indem die Schiebetaste 23 einen Ansatz 41 mit einer Abschrägung 42 aufweist und indem auf der anderen Seite des Schwenkhebels 35 am Stößel 24 ein den Schwenkhebel 35 bei Längsverschiebungen des Stößels 24 betätigender weiterer Nocken 43 angeordnet ist.The pivot lever 35 pivots in the locking position of the closure (Figure 2) on a nose 40 on the bolt 16 and holds the latter in the locked position. The upper end of the pivot lever 35 interacts with both the slide button 23 and the tappet 24, in that the slide button 23 has a shoulder 41 with a bevel 42 and in that on the other side of the pivot lever 35 on the tappet 24, the pivot lever 35 for longitudinal displacements of the tappet 24 actuating further cams 43 is arranged.

Ausgehend von der Bereitschaftsstellung in Figur 1 arbeitet der Verschluß folgendermaßen: Der Stößel 24 befindet sich in einer Mittellage und hält über die entspannten Federn 26, 28 einerseits die Schiebetaste 23 in ihrer vordersten Stellung und andererseits den Riegel 16 in der die Bahn 14 freigebenden hochgeschwenkten Stellung.Starting from the ready position in FIG. 1, the closure works as follows: the plunger 24 is in a central position and holds the slide button 23 in its foremost position on the one hand via the relaxed springs 26, 28 and on the other hand the latch 16 in the swiveled-up position which releases the web 14 .

Wird nun die Einsteckzunge 12 in die Bahn 14 zwischen Gehäuse 11 und der Schloßplatte 13 eingeschoben, so betätigt diese zunächst den nicht dargestellten federbelasteten Auswerfer, der seinerseits auf den Lagerungsfortsatz 17 des Riegels 16 drückt. Ist die Zunge 12 genügend weit eingeschoben, so schwenkt der Riegel 16 unter dem Druck auf seinen Lagerungsfortsatz 17 um seine Lagerstelle 20 hoch und fällt mit dem Verriegelungsvorsprung 18 durch die Ausnehmung hindurch in die Zungenausnehmung der Zunge 12 ein und verriegelt diese.If the tongue 12 is now inserted into the web 14 between the housing 11 and the lock plate 13, it first actuates the spring-loaded ejector, not shown, which in turn presses on the bearing extension 17 of the bolt 16. If the tongue 12 is inserted sufficiently far, the bolt 16 pivots under pressure on its bearing extension 17 about its bearing point 20 and falls with the locking projection 18 through the recess into the tongue recess of the tongue 12 and locks it.

Durch die Schwenkbewegung drückt der Riegel 16 mit seiner Umspritzung 19 bzw. der Abstützung 21 über die Feder 28 auf den Stößel 24 einerseits und auf die Anschlagflächen 33, 34 des Hebelarms 29 andererseits. Dies führt zu einer Verschiebung des Stößels 24 in Richtung der Schiebetaste 23, wodurch einerseits der Nocken 32 den Weg für eine Verschwenkung des Hebels 29 mit der Masse 30 um die Lagerung 31 freigibt, und zwar unter der Wirkung der Feder 28. Gleichzeitig bewirkt andererseits die Längsverschiebung des Stößels 24 über den Nocken 43 auch ein Verschwenken des Schwenkhebels 35 entgegen dem Uhrzeigersinn, wodurch das untere Ende des Schwenkhebels 35 auf die Nase 40 des Riegels 16 zu liegen kommt und diesen festhält. Weiterhin wird die Schiebetastenfeder 26 leicht vorgespannt.Due to the pivoting movement, the locking bar 16 presses with its encapsulation 19 or the support 21 via the spring 28 onto the plunger 24 on the one hand and onto the stop surfaces 33, 34 of the lever arm 29 on the other hand. This leads to a displacement of the plunger 24 in the direction of the sliding key 23, whereby on the one hand the cam 32 clears the way for the lever 29 with the mass 30 to pivot about the bearing 31, under the action of the spring 28 Longitudinal displacement of the plunger 24 over the cam 43 also a pivoting of the pivot lever 35 counterclockwise, whereby the lower end of the pivot lever 35 comes to rest on the nose 40 of the bolt 16 and holds it. Furthermore, the sliding key spring 26 is slightly biased.

Anhand der Figur 2 sei nun die bei verriegelter Stellung des Verschlusses wirkende Schocksicherung beschrieben: Kommt es nun zu einer in Richtung des Pfeiles 44 wirkenden Beschleunigungskraft, beispielsweise infolge einer Strammbewegung im Gurtsystem, so würde die Masseträgheit von Schiebetaste 23 und Schwenkhebel 35 dazu führen, daß eine Betätigung des Stößels 24 auf die Abstützung 21 des Riegels 16 zu erfolgt, indem die Schiebetaste 23 gegenüber der Bewegung des Verschlußkörpers 10, 11 verharrt und sich so relativ zum Verschlußkörper 10, 11 verschieb. Da gleichzeitig die Masseträgheit des Schwenkhebels 35 eine Drehung im Uhrzeigersinn herbeiführen würde, stünde einem Ausschwenken des Riegels 16 infolge der Öffnungsbewegung der Schiebetaste 23 aus der Verriegelungsposition nichts mehr im Wege. Dieses zu erwartende Lösungsverhalten des Verschlusses wird unterbunden durch die Ausgleichsmasse 30, deren Masse so groß wie die Masse von Schiebetaste 23, Schwenkriegel 35 und Stößel 24 zusammengenommen gewählt ist, und die aufgrund ihrer Lagerung über den Hebelarm 29 nun eine gegengerichtete Kraft auf den Stößel 24 ausübt, indem der Hebelarm 29 stehenbleibt und den Stößel 24 über den Nocken 32 unbeweglich festhält. Somit ist eine Öffnung des Riegels 16 ausgeschlossen, da diese nur über eine Längsverschiebung des Stößels 24 bewirkbar wäre, welche jedoch ausgeschlossen ist.The shock protection acting when the lock is in the locked position will now be described with reference to FIG. 2: If there is an acceleration force acting in the direction of arrow 44, for example as a result of a tightening movement in the belt system, the inertia of sliding button 23 and pivot lever 35 would lead to the fact that an actuation of the plunger 24 to the support 21 of the bolt 16 to take place in that the slide button 23 remains against the movement of the closure body 10, 11 and thus moves relative to the closure body 10, 11. Since at the same time the inertia of the pivot lever 35 would bring about a clockwise rotation, there would be nothing standing in the way of pivoting the bolt 16 as a result of the opening movement of the sliding button 23 from the locking position. This expected release behavior of the closure is prevented by the balancing mass 30, the mass of which is selected to be as large as the mass of the slide button 23, the pivot bolt 35 and the plunger 24, and which, due to its mounting on the lever arm 29, now exerts a counter-force on the plunger 24 exercises by the lever arm 29 remains stationary and holds the plunger 24 immovably over the cam 32. An opening of the bolt 16 is thus excluded, since this could only be effected by a longitudinal displacement of the plunger 24, which is excluded.

Eine weitere Schocksicherung des Verschlusses ergibt sich auch dadurch, daß in der verriegelten Position auch der Vorsprung 39 in der Kulisse 37 ein Verschwenken der Lagerungsvorsprünge 36 und damit ein Verschwenken des Schwenkhebels 35 verhindert.A further shock protection of the closure also results from the fact that, in the locked position, the projection 39 in the link 37 prevents pivoting of the bearing projections 36 and thus pivoting of the pivot lever 35.

Soll nun eine Öffnung des Schlosses erfolgen (Figur 3) so wird die Schiebetaste 23 in das Verschlußgehäuse 11 eingeschoben und drückt dabei mit dem Ansatz 41 auf den Schwenkhebel 35, um diesen im Uhrzeigersinn in die Freigabeposition für den Riegel 16 zu verschwenken. Gleichzeitig sorgt die sich zwischen Schiebetaste 23 und Flansch 27 des Stößels 24 abstützende Feder 26 für eine Verschiebung des Stößels 24 nach rechts. Hierdurch gibt zunächst der Nocken 43 den Weg frei für die Verschwenkung des Schwenkhebels 35 über den Schiebetastenansatz 41, wobei aufgrund dieser zunächst noch wirkenden Abstützung am Ansatz 41 die Lagerungsvorsprünge 36 in den mit Spiel ausgebildeten Kulissen 37 nach rechts gedrückt werden, so daß der jeweilige Lagerungsvorsprung 36 an dem ihn in der Verriegelungsstellung sichernden Vorsprung 39 vorbei in die Weiterung 38 im Sinne einer Schwenkbewegung eintreten kann.If the lock is now to be opened (FIG. 3), the sliding button 23 is pushed into the lock housing 11 and presses with the extension 41 onto the pivot lever 35 in order to pivot it clockwise into the release position for the bolt 16. At the same time, the spring 26, which is supported between the slide button 23 and the flange 27 of the plunger 24, moves the plunger 24 to the right. As a result, the cam 43 first clears the way for the pivoting of the pivot lever 35 via the sliding key attachment 41, with the support projections 36 being pushed to the right in the slots 37 formed with play due to this initially still acting support on the attachment 41, so that the respective support projection 36 past the protrusion 39 securing it in the locking position into the extension 38 in the sense of a pivoting movement.

Die Verschiebung des Stößels 24 führt weiter dazu, daß der weitere Nocken 32 den Hebelarm 29 ebenfalls im Uhrzeigersinn verdreht, wodurch die Feder 28 gespannt wird, bis durch den Anschlag des Stößels 24 an der Abstützung 21, 19 eine Verschwenkung des Riegels 16 aus der Verriegelungsausnehmung der Zunge 12 heraus mit deren Freigabe erfolgt. Anschließend kehren die Teile durch die Entspannung der Federn 26, 28 in die in Figur 1 dargestellte Ausgangslage zurück.The displacement of the plunger 24 further leads to the fact that the further cam 32 also rotates the lever arm 29 in a clockwise direction, as a result of which the spring 28 is tensioned until a pivoting of the bolt 16 out of the locking recess by the stop of the plunger 24 on the support 21, 19 the tongue 12 out with their release. The parts then return to the starting position shown in FIG. 1 by relaxing the springs 26, 28.

Nach einem weiteren Ausführungsbeispiel der Erfindung (Figur 4) ist vorgesehen, die Ausgleichsmasse durch einen Stoßdämpfer 45 zu ersetzen, der beispielsweise bei sonst unveränderter Bauweise des Verschlusses am Nocken 32 des Stößels 24 angreifen kann und so in gleicher Weise wie die Ausgleichsmasse 30 eine Verschiebung des Stößels 24 bei in Richtung des Pfeiles 44 wirkenden Kräften verhindert und so die Schocksicherung für solche Belastungsfälle sicherstellt. Der Stoßdämpfer kann dabei mit einem flüssigen oder gasförmigen Medium arbeiten. Aus Figur 4 ist weiterhin die Befestigung des Verschlusses über einen Niet 46 an einem Verankerungsteil 47 ersichtlich, welches üblicherweise mit einem fahrzeugfesten Teil oder einer Strammvorrichtung dafür verbunden ist.According to a further embodiment of the invention (Figure 4) it is provided to replace the balancing mass with a shock absorber 45, which can attack the cam 32 of the plunger 24, for example with an otherwise unchanged design of the closure, and thus in the same way as the balancing mass 30 a displacement of the Tappet 24 prevented in the direction of arrow 44 acting forces and so ensures shock protection for such stress cases. The shock absorber can work with a liquid or gaseous medium. FIG. 4 also shows the fastening of the closure via a rivet 46 to an anchoring part 47, which is usually connected to a part fixed to the vehicle or a pretensioning device therefor.

Gemäß dem in Figur 5 gezeigten Ausführungsbeispiel besteht das Gehäuse 11 des Verschlusses 10 aus einer einteiligen Schloßplatte 50, welche im Bereich ihrer Befestigung an einem Verankerungsteil 53 zu zwei gleich langen Schenkeln 51, 52 umgebogen ist, zwischen denen die Schloßzunge 12 gegen die Wirkung eines Auswerfers 54 einführbar ist. In zwei im hinteren Bereich der Schloßplatte 50 hochgebogenen Lappen 55 ist ein Verriegelungsteil 56 senkrecht zur Einsteckebene für die Schloßzunge 12 drehbar in einem Gelenk 57 gelagert, wobei die konstruktive Ausbildung des Verriegelungsmechanismus nicht Gegenstand der Erfindung ist.According to the embodiment shown in Figure 5, the housing 11 of the closure 10 consists of a one-piece lock plate 50, which is bent in the area of its attachment to an anchoring part 53 to two legs 51, 52 of equal length, between which the lock tongue 12 against the action of an ejector 54 is insertable. In two in the rear area of the lock plate 50 bent tabs 55, a locking member 56 is rotatably mounted perpendicular to the insertion plane for the lock tongue 12 in a joint 57, the design of the locking mechanism is not the subject of the invention.

Die über dem Einführtrichter für die Zunge 12 angeordnete Schiebetaste 23 ist über Vorsprünge zwischen den Schenkeln 51, 52 der Schloßplatte 50 geführt. Auf der der Schiebetaste 23 zugekehrten Oberseite des oberen Schenkels 51 ist eine Blattfeder 58 in einem Bügel 59 eingespannt. welche in Ruhelage mit ihrem freien Ende bis an die Schiebetaste 23 heranreicht. Die Feder 58 ist entgegen der Betätigungsrichtung der Schiebetaste 23 leicht zurückgebogen und trägt an der dadurch gebildeten Oberseite die Ausgleichsmasse 30.The sliding button 23 arranged above the insertion funnel for the tongue 12 is guided via projections between the legs 51, 52 of the lock plate 50. A leaf spring 58 is clamped in a bracket 59 on the upper side of the upper leg 51 facing the sliding button 23. which reaches the sliding button 23 with its free end in the rest position. The spring 58 is slightly bent back against the direction of actuation of the sliding button 23 and carries the balancing mass 30 on the upper side thereby formed.

Die Schiebetaste 23 weist auf ihrer Unterseite im Bereich des Federendes 60 eine Ausnehmung 61 mit einem Anschlag 62 auf, in welche das Federende 60 im Auslösefall einschwenkbar ist. Die Funktionsweise dieses Ausführungsbeispieles der Schocksicherung ergibt sich dabei folgendermaßen:The sliding button 23 has on its underside in the area of the spring end 60 a recess 61 with a stop 62, into which the spring end 60 can be pivoted in the event of tripping. The functioning of this embodiment of the shock protection results as follows:

Kommt es wie bereits beschrieben zu einer Beschleunigung des Verschlußkörpers in Richtung des Pfeiles 44 so verharrt die Feder 58 mit Masse 30 aufgrund ihrer Masseträgheit gleichsam gegenüber den anderen Verschlußteilen. Infolge der dadurch ausgebildeten Relativbewegung schwenkt das Ende 60 der Feder 58 in die Ausnehmung 61 der Schiebetaste 23 ein und hält diese über den Anschlag 62 fest, so daß eine Öffnungsbewegung der Schiebetaste ausgeschlossen ist. Hierbei versteht sich, daß die Masse von Feder und Ausgleichsmasse größer sein muß, als diejenige der Schiebetaste.If, as already described, the closure body is accelerated in the direction of arrow 44, the spring 58 with mass 30 remains, as it were, due to its inertia compared to the other closure parts. As a result of the relative movement thereby formed, the end 60 of the spring 58 pivots into the recess 61 of the sliding key 23 and holds it firmly via the stop 62, so that an opening movement of the sliding key is excluded. It goes without saying that the mass of the spring and the balancing mass must be greater than that of the sliding key.

Die gezeigte unmittelbare Verbindung von Schiebetaste und Hebel kann auch ersetzt sein durch eine mittelbare Verbindung, indem die als Hebel ausgebildete Feder beispielsweise an einem an der Schiebetaste in aller Regel ausgebildeten Betätigungselement für den Riegelmechanismus angreift und auf diese Weise eine Verschiebebewegung der Schiebetaste verhindert.The shown direct connection of the sliding button and lever can also be replaced by an indirect connection, in that the spring designed as a lever engages, for example, an actuating element for the locking mechanism, which is generally designed on the sliding button, and in this way prevents a sliding movement of the sliding button.

Es ist weiterhin leicht einsehbar, daß anstelle der Feder 58 auch ein starrer Hebel als Träger der Masse vorgesehen sein kann, der gehäusefest drehbeweglich angeordnet und im übrigen federbelastet ist. Besonders vorteilhaft ist in einem solchen Fall die Ausbildung des Hebels als Winkelhebel, dessen einer Arm mit einer pendelartig angeordneten Ausgleichsmasse zusammenwirkt und dessen anderer Arm unmittelbar oder mittelbar an der Schiebetaste im Sinne einer Sperrung von deren Öffnungsbewegung eingreift.It is also easy to see that instead of the spring 58, a rigid lever can also be provided as a carrier of the mass, which is arranged rotatably fixed to the housing and is otherwise spring-loaded. In such a case, it is particularly advantageous to design the lever as an angle lever, one arm of which interacts with a balancing mass arranged in the manner of a pendulum, and the other arm of which engages directly or indirectly on the sliding button in the sense of blocking its opening movement.

Eine derartige Funktionsweise ergibt sich insbesondere auch aus den Ausführungsbeispielen gemäß den Figuren 6 - 9 der Zeichnung.Such a mode of operation also results in particular from the exemplary embodiments according to FIGS. 6-9 of the drawing.

Hierbei ist ein Winkelhebel 65 über Lagerzapfen 66 drehbar am Schloßgehäuse 11 gelagert, so daß in Ruhestellung ein Arm des Winkelhebels 65 in die Bewegungsebene der Schiebetaste 23 und der andere Arm senkrecht dazu in den Schloßkörper 11 verläuft. An dem unteren Ende des letztgenannten Armes des Winkelhebels 65 ist dieser über eine Langlochführung 67 mit einem darin eingreifenden Stift 68 einer Trägheitsmasse 69 wirkungsmäßig verbunden, die ihrerseits wiederum in einem fest mit dem Schloßgehäuse 11 verbundenen Rahmen 70 beweglich geführt ist. Die Trägheitsmasse 69 ist in diesem Ausführungsbeispiel mit metallischen Einlagen 71 versehen, kann aber auch vollständig aus Metall ausgeführt sein.Here, an angle lever 65 is rotatably supported on the lock housing 11 by means of journals 66, so that in the rest position one arm of the angle lever 65 extends into the plane of movement of the sliding key 23 and the other arm runs perpendicularly thereto in the lock body 11. At the lower end of the latter arm of the angle lever 65, the latter is operatively connected via an elongated hole guide 67 with a pin 68 of an inertial mass 69 engaging therein, which in turn is movably guided in a frame 70 firmly connected to the lock housing 11. In this exemplary embodiment, the inertial mass 69 is provided with metallic inserts 71, but can also be made entirely of metal.

Die Trägheitsmasse 69 ist über eine Druckfeder 72 in ihrer Ruhestellung dergestalt gehalten, daß der mit der Trägheitsmasse 69 über die Stift-Schlitz-Verbindung 67, 68 verbundene Winkelhebei 65 nicht verschwenkt ist, und sie liegt dabei an dem vorderen Anschlag 73 des Rahmens 70 an. Die Feder 72 ist auf einem Zapfen 74 des Rahmens 70 gehalten, dessen vorderes Ende gleichzeitig einen Anschlag 75 für die Verschiebung der Trägheitsmasse 69 bildet.The inertial mass 69 is held in its rest position by means of a compression spring 72 such that the angular lift 65 connected to the inertial mass 69 via the pin-slot connection 67, 68 is not pivoted, and it lies against the front stop 73 of the frame 70 . The spring 72 is held on a pin 74 of the frame 70, the front end of which simultaneously forms a stop 75 for the displacement of the inertial mass 69.

Die Schiebetaste 23 weist an ihrer dem Winkelhebel 65 zugewandten unteren Seite einen Ansatz 76 mit einer Sperrkante 77 auf, die mit . dem Winkelhebel 65 zusammenwirkt.The sliding button 23 has on its lower side facing the angle lever 65 a shoulder 76 with a locking edge 77, which with. the angle lever 65 cooperates.

Die Schocksicherung gemäß dem vorbeschriebenen Ausführungsbeispiel arbeitet in weitgehender Übereinstimmung mit den bisher beschriebenen Ausführungsbeispielen folgendermaßen: In der Ruhelage der Trägheitsmasse 69 wird diese von der Feder 72 gegen den Anschlag 73 des Rahmens 70 gedrückt; aufgrund der formschlüssigen Verbindung 67, 68 mit dem Winkelhebel 65 liegt auch dessen freier Schenkel außerhalb des Ansatzes 76 der Schiebetaste 23, so daß eine freie Bewegung der Schiebetaste 23 im Sinne einer normalen Betätigung des Schloßmechanismus möglich ist. Bei Einleitung einer starken Beschleunigung in der Bewegungsebene der Schiebetaste 23 auf das Gurtschloß (Pfeil 44) drückt die Trägheitsmasse 69 aufgrund ihrer Relativbewegung zum Schloßgehäuse 11 die Druckfeder 72 zusammen, bis die Trägheitsmasse 69 an dem Anschlag 75 des Rahmens 70 anstößt. Mit dieser Bewegung schwenkt die Trägheitsmasse 69 den Winkelhebel 65 um den Lagerzapfen 66, so daß der freie Arm des Winkelhebels 65 vor dem Sperransatz 76, 77 der Schiebetaste 23 zu liegen kommt. Somit wird eine weitere Bewegung der Schiebetaste 23 im Sinne einer Öffnung des Schlosses auf das Maß 78 beschränkt, ein vollständiger Bewegungsablauf bis zur Freigabe kann nicht mehr stattfinden.The shock protection according to the above-described embodiment works in broad accordance with the previously described embodiments as follows: In the rest position of the inertial mass 69, this is pressed by the spring 72 against the stop 73 of the frame 70; due to the positive connection 67, 68 with the angle lever 65, its free leg is also located outside the shoulder 76 of the sliding key 23, so that a free movement of the sliding key 23 in the sense of a normal actuation of the lock mechanism is possible. When a strong acceleration is initiated in the plane of movement of the sliding button 23 on the belt buckle (arrow 44), the inertial mass 69 compresses the compression spring 72 due to its relative movement to the lock housing 11 until the inertial mass 69 abuts the stop 75 of the frame 70. With this movement, the inertial mass 69 pivots the angle lever 65 around the bearing journal 66, so that the free arm of the angle lever 65 in front of the locking projection 76, 77 of the sliding button 23 comes to rest. A further movement of the sliding key 23 in the sense of opening the lock is thus restricted to dimension 78, a complete sequence of movements until the release can no longer take place.

Das Ausführungsbeispiel gemäß den Figuren 8 und 9 zeigt eine Alternative gegenüber der vorbeschriebenen Ausführungsform insoweit, als der entsprechende Arm des Winkelhebels 65 unmittelbar und einstückig mit der Trägheitsmasse 69 verbunden ist, wobei auch dieser Trägheitsarm 69 des Winkelhebels 65 durch die Druckfeder 72 belastet ist. Im übrigen ergibt sich der gleiche Bewegungsablauf wie zu dem Ausführungsbeispiel gemäß den Figuren 6 und 7 beschrieben.The exemplary embodiment according to FIGS. 8 and 9 shows an alternative to the previously described embodiment insofar as the corresponding arm of the angle lever 65 is connected directly and in one piece to the inertial mass 69, this inertia arm 69 of the angle lever 65 also being loaded by the compression spring 72. Otherwise, the same movement sequence results as described for the exemplary embodiment according to FIGS. 6 and 7.

Die in der vorstehenden Beschreibung, den Patentansprüchen, der Zusammenfassung und der Zeichnung offenbarten Merkmale des Gegenstandes dieser Unterlagen können einzeln als auch in beliebigen Kombinationen untereinander für die Verwirklichung der Erfindung in ihren verschiedenen Ausführungsformen wesentlich sein.The features of the subject matter of these documents disclosed in the above description, the patent claims, the abstract and the drawing can be essential individually or in any combination with one another for realizing the invention in its various embodiments.

Claims (29)

1. Belt buckle (10) for a safety belt, for receiving and locking an insertable tongue (12) having a housing (11) and, arranged therein, an insertion path (14) for the insertable tongue (12), said path containing a spring-loaded ejector and having a bolt (16) guided in the buckle (10) and cooperating with the tongue recess in the event of locking, said bolt holding the insertable tongue (12) in an associated recess in the buckle (10), and a sliding knob (23) guided in the housing (11) transversely with respect to the plane of movement of the bolt (16) in order to release the lock, characterized in that, to protect the buckle (10) from shock, in the direction of actuation of the sliding knob (23), a counterweight (30) is provided which is offset relative to the line of action of the sliding knob (23) by means of a lever arm (29, 58) and which, in the event of locking, secures the sliding knob (23) against any forces of acceleration (44) which occur.
2. Belt buckle according to Claim 1, characterized in that the counterweight (30) is directly connected to the sliding knob (23) via the lever (29) and corresponds to the mass of the sliding knob (23).
3. Belt buckle according to Claim 1, in which the bolt is pivotably mounted in the housing and is secured in the locked position by means of a pivot lever mounted in the housing, characterized in that a push rod (24) is guided in longitudinally moveable manner in the buckle housing (11) in the direction of action of the sliding knob (23) and this push rod (24) couples together the movements of the sliding knob (23) on the one hand and the pivotable bolt (16) on the other hand.
4. Belt buckle according to Claim 3, characterized in that, at the sliding knob end, a spring (26) inserted in a recess (25) in the sliding knob is disposed on the push rod (24) and said spring is supported between the sliding knob (23) and a flange (27) provided on the push rod (24).
5. Belt buckle according to Claim 3, characterized in that, in order to secure the counterweight (30), an arm (29) is provided which is mounted on a spindle (31) arranged transversely on the housing (11), one end of said arm (29) acting on the push rod (24) whilst the other end carries the counterweight (30).
6. Belt buckle according to Claim 3, characterized in that the counterweight (30) is designed to be equal in magnitude to the total mass of the sliding knob (23), pivot lever (35) and push rod (24).
7. Belt buckle according to Claim 5, characterized in that, for connecting the push rod (24) and the lever arm (29), a laterally projecting cam (32) is provided on the push rod (24), around which the lever (29) partially fits with an associated recess.
8. Belt buckle according to Claims 5 and 7, characterized in that, on each side of the push rod (24), there are two counterweights (30), each of half the necessary total mass, which are guided on the housing (11) and adapted to be actuated by cams (32) projecting laterally on each side of the push rod (24).
9. Belt buckle according to Claims 5 to 8, characterized in that, on the end of the push rod (24) nearest the bolt, there is a spring (28) which is supported on the one hand on the lever arm (29) and on the other hand on the bolt (16).
10. Belt buckle according to one of Claims 1 to 9, characterized in that the pivot lever (35) is pivotable on the one hand by means of another cam (43) laterally disposed on the push rod (24) as a result of the longitudinal movement of the push rod (24) and, on the other hand, by means of an attachment (41) provided on the sliding knob (23), as a result of the movement of the sliding knob.
11. Belt buckle according to Claim 10, characterized in that the pivot lever (35) is mounted and guided with lateral projections (36) in detents (37) in the side walls of the U-shaped housing (11) so that, in the locked position, there is additional shockproofing to prevent the pivot lever (35) from pivotting out of position.
12. Belt buckle according to Claim 11, characterized in that the detents (37) which are adapted to fit the shape of the mounting projections (36) surround the mounting projections (36) of the pivot lever (35) with play and in that, in the detent (37) in question, there is a projection (39) which secures the associated mounting projection (36) from being pivoted away in the locking position.
13. Belt buckle (10) for a safety belt, for receiving and locking an insertable tongue (12) having a housing (11) and, arranged therein, an insertion path (14) for the insertable tongue (12), said path containing a spring-loaded ejector and having a bolt (16) guided in the buckle (10) and cooperating with the tongue recess in the event of locking, said bolt holding the insertable tongue (12) in an associated recess in the buckle (10), and a sliding knob (23) guided in the housing (11) transversely with respect to the plane of movement of the bolt (16) in order to release the lock, characterized in that, in order to protect the buckle (10) from shock in the direction of actuation of the sliding knob (23), a shock absorber (45) is provided which secures the sliding knob (23) against any acceleration which may occur (arrow 44) in the event of locking.
14. Belt buckle according to Claim 13 and Claim 3, characterized in that the shock absorber (45) is connected to the push rod (24).
15. Belt buckle according to one of Claims 1 to 14, characterized in that the insertion path (14) for the insertable tongue (12) is formed in the U-shaped housing (11) by a closure plate (13) provided at a spacing from the bottom of the housing (11).
16. Belt buckle according to Claim 3, characterized in that the bolt (16) is mounted in a recess (15) in the second locking plate (13) via a mounting projection (17), the mounting projection (17) of the bolt (16) projecting into the path of insertion (14) between the lock plates (11, 13).
17. Belt buckle according to Claim 16, characterized in that the bolt (16) has a front locking projection (18) which passes through the lock plate (13) in an associated recess and engages in the recess in the insertable tongue (12).
18. Belt buckle according to one of Claims 1 to 17, characterized in that the mounting and retaining projections (17, 19, 20, 21, 36) of the bolt (16) and pivot lever (35) are formed by injection- moulded plastics components.
19. Belt buckle (10) for a safety belt, for receiving and locking an insertable tongue (12) having a housing (11) and, arranged therein, an insertion path (14) for the insertable tongue (12), said path containing a spring-loaded ejector and having a bolt (16) guided in the buckle (10) and cooperating with the tongue recess in the event of locking, said bolt holding the insertable tongue (12) in an associated recess in the buckle (10), and a sliding knob (23) guided in the housing (11) transversely with respect to the plane of movement of the bolt (16) in order to release the lock, characterized in that, in order to protect the buckle (10) from shock in the direction of actuation of the sliding knob (23), a lever (58, 65) loaded with an inertia mass (30, 69) is provided which, when actuated, is braced between its mounting (51, 59; 66) and the sliding knob (23).
20. Belt buckle according to Claim 19, characterised in that, in the event of actuation, the lever (58, 65) is braced against another part connected for movement with the sliding knob (23).
21. Belt buckle according to Claim 19 or 20, characterized in that a spring-loaded (72) bell crank lever (65) is provided, on one end of which the inertia mass (69) engages in the manner of a pendulum, whilst the other end thereof is arranged, in the event of actuation, for engagement in the path of movement of the sliding knob (23).
22. Belt buckle according to Claim 19 or 20, characterized in that the lever which carries the inertia mass (30) is formed as a spring (58) which is clamped in position to be integral with the housing (51, 59) at one end, whilst the free end (60) thereof is braced on the sliding knob (23) in the event of actuation.
23. Belt buckle according to one of Claims 19 to 22, characterized in that an inertia mass (69) which is guided to be moveable on the buckle housing (11) in the direction of movement of the sliding knob (23) is coupled to the free end of the bell crank lever (65) by means of a pin-and-slot connection (67,68).
24. Belt buckle according to Claim 23, characterized in that the inertia mass (69) is held in its resting position by a spring (72).
25. Belt buckle according to one of Claims 19 to 22, characterized in that the inertia mass (69) is formed on the free end of the lever (65) and the lever end is loaded in the resting position of the lever (65) by a spring (72) which is supported at the housing end (70).
26. Belt buckle according to one of Claims 19 to 25, characterized in that the sliding knob (23) has, on its underside facing the lever configuration (58, 65), an arrangement (61, 62; 76, 77) for engagement of the free end of the lever.
27. Belt buckle according to Claims 22 and 26, characterized in that the arrangement on the sliding knob (23) consists of a recess (61) with an abutment (62) for the spring end (58, 60).
28. Belt buckle according to one of Claims 23 to 25 and 26, characterized in that, in the plane of the lever arm (65), there is an attachment (76) with a locking edge (77) formed on the sliding knob (23).
29. Belt buckle according to Claim 26, characterized in that the arrangement takes the form of a toothed strip which cooperates with the lever end in the event of actuation.
EP86111015A 1985-08-17 1986-08-09 Seat belt safety buckle Expired - Lifetime EP0212507B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3529539 1985-08-17
DE3529539 1985-08-17
DE3533684 1985-09-21
DE19853533684 DE3533684A1 (en) 1985-08-17 1985-09-21 SAFETY BELT CLOSURE

Publications (4)

Publication Number Publication Date
EP0212507A2 EP0212507A2 (en) 1987-03-04
EP0212507A3 EP0212507A3 (en) 1987-12-16
EP0212507B1 true EP0212507B1 (en) 1990-02-28
EP0212507B2 EP0212507B2 (en) 1993-09-01

Family

ID=25835152

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111015A Expired - Lifetime EP0212507B2 (en) 1985-08-17 1986-08-09 Seat belt safety buckle

Country Status (2)

Country Link
EP (1) EP0212507B2 (en)
DE (2) DE3533684A1 (en)

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Also Published As

Publication number Publication date
DE3669095D1 (en) 1990-04-05
DE3533684A1 (en) 1987-02-26
EP0212507B2 (en) 1993-09-01
EP0212507A2 (en) 1987-03-04
EP0212507A3 (en) 1987-12-16

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