EP0557983B1 - Seat belt buckle with pin locking device - Google Patents

Seat belt buckle with pin locking device Download PDF

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Publication number
EP0557983B1
EP0557983B1 EP93102945A EP93102945A EP0557983B1 EP 0557983 B1 EP0557983 B1 EP 0557983B1 EP 93102945 A EP93102945 A EP 93102945A EP 93102945 A EP93102945 A EP 93102945A EP 0557983 B1 EP0557983 B1 EP 0557983B1
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EP
European Patent Office
Prior art keywords
locking
blocking element
locking pin
seat belt
belt buckle
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
EP93102945A
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German (de)
French (fr)
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EP0557983A1 (en
Inventor
Dieter Klauke
Reinhard Flössel
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Autoliv Development AB
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Autoliv Development AB
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Publication date
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Publication of EP0557983A1 publication Critical patent/EP0557983A1/en
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    • 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 vehicles for receiving and locking a tongue in a housing and a lock button to release the lock, the lock button against a spring opens the load-bearing lock mechanism after actuation in the actuating direction after an opening stroke to release the lock tongue and wherein the tongue over a locking part pivotably mounted in the housing between an unlocking position and a locking position can be locked, which can be moved into a locking position and into a release position or into a locking position via a movement path guided in a link guide in the housing and on a movement path predetermined by the link guide and in a release position movable locking lever can be locked as a locking element, and with an ejector that the tongue in the unlocked position of the lock steeply pushes out of the housing.
  • the problem is that the belt buckle hits with a high delay (shock) against an end stop and an unintentional lock opening occurs because the lock button and the locking pin move down due to their inertia and thereby unlock the lock mechanism.
  • a seat belt buckle for vehicles and for receiving and locking a tongue in a housing and a lock button to release the lock, the lock button against a spring opening the load-bearing lock mechanism after an opening stroke to release the lock tongue and wherein the insertion tongue can be locked via a locking part pivotably mounted in the housing between an unlocking position and locking position, which can be locked via a locking pin guided in a link guide in the housing and movable into a locking position and into a release position, and with an ejector which moves the insertion tongue in the unlocking position of the locking element presses out of the housing.
  • This arrangement has the disadvantage that the locking pin, which is guided in a backdrop within the lock housing, could move from its locked position holding the locking member into the release position due to its inertia and the inertia of the lock key, so that the lock mechanism is unlocked and the lock tongue can be pulled out of the lock.
  • the seat belt buckle With such a design of the seat belt buckle it is ensured that the seat belt buckle cannot be unlocked unintentionally even when high mass forces occur, since the locking pin is held securely in its locking position, since its path of movement in the backdrop is blocked by the locking element and the locking element does not first comes into play through acceleration forces.
  • a locking pin guided in a link guide and a correspondingly guided locking lever are regarded as the locking element as having the same effect, so that the locking element is referred to below as the locking pin.
  • a locking pin receptacle is formed on a free end of the first arm. As a result, the locking pin is hooked, so to speak, in the locking element, and both lock each other and are secured against unintentional detachment from one another.
  • the locking pin receptacle is delimited by a top section edge that is approximately parallel to a first section of the movement path of the locking pin and two lateral delimitation edges that extend from the upper delimitation edge to an opening of the locking pin receptacle opening, and that the design and arrangement is made in this way that in the event of a strong delay (shock), the locking pin moves into the locking pin receptacle and the locking element is thereby blocked.
  • At least one of the boundary edges of the locking pin receptacle retraction forms an angle alpha of approximately 90 to a plane running through the pivot point of the locking element and an intended contact point of the locking pin with the boundary edge in the direction of a lower end of the boundary edge ° or less.
  • an at least claw-shaped or hook-shaped attachment part is formed on a free end of the first arm, with the purpose of increasing safety the attachment part has an inwardly curved, hemispherical, or triangular or polygonal, contact surface for the locking pin.
  • the locking element has an angled swivel arm for actuation and pivoting from a basic position, in which the locking element or the locking pin receptacle or the claw-shaped or hook-shaped attachment part is in the movement path of the locking pin, into the unlocking position by the lock key.
  • This embodiment has the advantage that the locking element is always in the movement path of the locking pin in a basic position, so that when the lock tongue is inserted and thus when the seat belt buckle is locked, it is ensured that the locking element is always in the movement path of the locking pin when the seat belt lock is locked , so that the greatest possible security against unintentional loosening under the influence of inertial forces is given due to an acceleration or deceleration of the buckle.
  • one of the side edges of the locking pin receptacle which is not provided for holding the locking pin in the event of acceleration, or that an additional additional attachment part, under the locking part, prevents locking of the lock, if the locking element should not release the path of movement of the locking pin in the intended manner when locking, so that a secure locking and locking is always ensured by the locking pin.
  • the locking element is actuated by the lock button via a connecting element between the swivel arm and the lock button.
  • first arm of the locking element to the second pivot arm has an angle beta of approximately 90 °.
  • the force application points on the first and second arm lie approximately in a common plane.
  • the locking element either has a center of gravity that falls in the pivot or has a center of gravity that is spaced and arranged so that occurring G-forces hold the locking part in its locking position.
  • the locking element is connected directly to the lock key designed as a sliding key via the coupling and has such a large mass of rotational inertia that even when the center of gravity and pivot point coincide, the lock key is retained.
  • FIGS. 1 to 7 A first embodiment of a seat belt buckle 100 is shown in FIGS. 1 to 7.
  • the lock key 12 is mounted so as to be longitudinally displaceable in the actuation direction B to open the lock mechanism 13 with the ejector 113, the cantilever 114 and the main spring 115.
  • the training is provided in the usual way so that the lock key 12 opens the load-bearing lock mechanism 13 after an opening stroke to release the tongue 14, the tongue 14 is locked via a pivotally mounted in the lock housing 11 locking member 10, which via a in a link guide 15 of the lock housing 11 and lockable on a movement path 17 in a locking position and in a release position locking pin 16 can be locked.
  • a pivot point 18 pivotally mounted locking element 19 is provided, which has two locking element arms 20, 21, which preferably have an angle beta of approximately 90 ° to one another and, in this embodiment, an angle beta of approximately 80 ° to one another.
  • the locking element 19 is rotatable about the pivot point 18 and the first arm 20 is designed to be movable into the path of movement 17 of the locking pin 16, in such a way that the locking element 19 is in the path of movement 17 of the locking pin 16 and this against movement from the Locked position blocked in the release position, as shown in Figure 1, 7 and 8.
  • a connecting element 22 is provided on the lock key 12, which acts and moves the arm 21 when the lock key 12 is moved in the actuating direction B and pivots the locking element 19 about the pivot point 18 into the release position.
  • the connecting element 22 is a so-called thrust crank mechanism 122, in which a pin 121a arranged on the free end 21a of the swivel arm 21 is movably arranged in a slot 121b of the lock key 12 and is carried along by slot 121b in the direction of movement when the lock key 12 is moved (Fig. 5), the pin 121a then simultaneously carrying out a corresponding upward or downward movement.
  • a conventional swivel joint and a telescopic arm 21 can also be provided here in order to carry out the desired transmission of the linear movement of the lock key 12 into a rotational movement of the locking element 19.
  • the lock key 12 designed as a sliding key
  • the locking element 19 is then moved over the connecting element 22 pivoted back into the basic position.
  • a plunger part 23 is provided on the lock key 12 which, when the lock key is actuated appropriately in the actuation direction B after pivoting the locking element 19 from the locking position into a position releasing the movement path 17, acts on the locking pin 16 and moves it into the release position.
  • a distance I is provided between the corresponding boundary edge 26 of the locking pin receptacle recess 24 of the locking element 19 and the locking pin in the unaccelerated state shown in FIG. 7 in order to enable a pivoting movement of the locking element 19 into the release position, as is indicated in FIG. 6, before the plunger part 23 moves the locking pin 16 when actuated.
  • a locking element 19 is provided, which either has a locking pin receptacle recess 24 (FIG. 7) or two claw-shaped or hook-shaped attachment parts 29, 30 (FIG. 8) that hold the locking pin 16 in the locked position (FIG. 5).
  • the system lock button, locking element and locking pin is coordinated so that these parts do not move in the event of an impact and therefore the seat belt buckle remains locked. Nevertheless, it is ensured that the seat belt buckle can be unlocked by the user at any time: when the lock button 12 is pressed, the locking element 19 rotates, the lock button 12 pushes the locking pin 16 into the unlocked position (unlocking position) and the lock is open (FIG. 6).
  • a approximately rectangular locking pin receiving recess 24 is formed, which is surrounded by an upper boundary edge 25, a front boundary edge 26 and a rear boundary edge 27 and is open via the opening 28 for the entry and exit of the locking pin 16.
  • the front boundary edge 26 has an angle alpha of approximately 90 ° or less and preferably to a plane E running through the pivot point 18 of the locking element 19 and an intended contact point K of the locking pin 16 with the boundary edge 26 in the direction of a lower end 26a of the boundary edge 26 about 70 ° so that a pressing force of the locking pin 16 on the boundary edge 26 leads to a rotation in the direction of the arrow Y.
  • the locking pin 16 When acceleration forces occur, the locking pin 16 is moved in the locking pin receptacle 24 in contact with the boundary edge 26 of the locking pin receptacle 24 and there is mutual support in all four directions, since up and down, ie perpendicular to the movement path 17, there is support by the link guide 15 , while in the direction of the movement path 17 there is support by the boundary edges 26, 27 of the locking pin receptacle recess 24 and the locking pin 16 is held against the decelerating force that occurs.
  • This system also offers complete security even in the event of shocks, while at the same time ensuring that problem-free unlocking can take place, as shown in FIG. 6.
  • the locking element 19 has two claw-shaped or hook-shaped Extension parts 29, 30, of which only one extension part 29 can be seen in the drawing, since the extension parts 29, 30 are at a distance from one another.
  • the hooks engage around the locking pin 16, so that this is securely held, as in the case of the locking pin receiving recess.
  • the attachment part 29, 30 has an inwardly curved, hemispherical, or triangular or polygonal contact surface 31 for the locking pin 16.
  • the basic idea in all embodiments is that by blocking both the locking pin and the lock button in the event of acceleration occurring, an inadvertent opening of the lock can be avoided.

Landscapes

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

Description

Die Erfindung betrifft ein Sicherheitsgurtschloß für Fahrzeuge zur Aufnahme und Verriegelung einer Einsteckzunge in einem Gehäuse und einer Schloßtaste zur Aufhebung der Verriegelung, wobei die Schloßtaste gegen eine Feder bei Betätigung in Betätigungsrichtung den lasttragenden Schloßmechanismus nach einem Öffnungshub zur Freigabe der Schloßzunge öffnet und wobei die Einsteckzunge über ein zwischen einer Entriegelungsstellung und einer Verriegelungsstellung schwenkbar im Gehäuse gelagertes Verriegelungsteil verriegelbar ist, das über einen in einer Kulissenführung im Gehäuse geführten und auf einer von der Kulissenführung vorgegebenen Bewegungsbahn in eine Sperrstellung und in eine Freigabestellung bewegbaren Sperrstift oder einen auf einer vorgegebenen Bewegungsbahn in eine Sperrstellung und in eine Freigabestellung bewegbaren Sperrhebel als Verriegelungselement sperrbar ist, und mit einem Auswerfer, der die Einsteckzunge in der Entriegelungsstellung des Verriegelungsteils aus dem Gehäuse drückt.The invention relates to a seat belt buckle for vehicles for receiving and locking a tongue in a housing and a lock button to release the lock, the lock button against a spring opens the load-bearing lock mechanism after actuation in the actuating direction after an opening stroke to release the lock tongue and wherein the tongue over a locking part pivotably mounted in the housing between an unlocking position and a locking position can be locked, which can be moved into a locking position and into a release position or into a locking position via a movement path guided in a link guide in the housing and on a movement path predetermined by the link guide and in a release position movable locking lever can be locked as a locking element, and with an ejector that the tongue in the unlocked position of the lock steeply pushes out of the housing.

Die Funktion und Aufgabe eines Sicherheitsschlosses, insbesondere für Kraftfahrzeuge, wird als allgemein bekannt vorausgesetzt.The function and task of a security lock, in particular for motor vehicles, is assumed to be generally known.

Zur Erhöhung der Insassensicherheit wird versucht, im Rahmen der ebenfalls als bekannt vorausgesetzten Gurtstraffung das Sicherheitsgurtschloß im Auslösefall schlagartig nach unten zu ziehen, um auf diese Weise sowohl den Beckengurt, als auch den Schultergurt straff zu ziehen.In order to increase occupant safety, an attempt is made to pull the seat belt buckle down suddenly in the event of a trigger as part of the belt tightening, which is also known to be known, in order to pull both the lap belt and the shoulder belt tightly in this way.

Dabei besteht das Problem, daß das Gurtschloß mit hoher Verzögerung (Schock) gegen einen Endanschlag schlägt und dabei eine unbeabsichtigte Schloßöffnung erfolgt, weil die Schloßtaste und der Sperrstift aufgrund ihrer Massenträgheit nach unten fahren und dabei den Schloßmechanismus entriegeln.The problem is that the belt buckle hits with a high delay (shock) against an end stop and an unintentional lock opening occurs because the lock button and the locking pin move down due to their inertia and thereby unlock the lock mechanism.

Es ist daher bereits ein Sicherheitsgurtschloß vorgeschlagen worden, für Fahrzeuge und zur Aufnahme und Verriegelung einer Einsteckzunge in einem Gehäuse und einer Schloßtaste zur Aufhebung der Verriegelung, wobei die Schloßtaste gegen eine Feder bei Betätigung den lasttragenden Schloßmechanismus nach einem Öffnungshub zur Freigabe der Schloßzunge öffnet und wobei die Einsteckzunge über ein zwischen einer Entriegelungsstellung und Verriegelungsstellung schwenkbar im Gehäuse gelagertes Verriegelungsteil verriegelbar ist, das über einen in einer Kulissenführung im Gehäuse geführten und in eine Sperrstellung und in eine Freigabestellung bewegbaren Sperrstift sperrbar ist, und mit einem Auswerfer, der die Einsteckzunge in der Entriegelungsstellung des Verriegelungselements aus dem Gehäuse drückt.It has therefore already been proposed a seat belt buckle for vehicles and for receiving and locking a tongue in a housing and a lock button to release the lock, the lock button against a spring opening the load-bearing lock mechanism after an opening stroke to release the lock tongue and wherein the insertion tongue can be locked via a locking part pivotably mounted in the housing between an unlocking position and locking position, which can be locked via a locking pin guided in a link guide in the housing and movable into a locking position and into a release position, and with an ejector which moves the insertion tongue in the unlocking position of the locking element presses out of the housing.

Diese Anordnung hat den Nachteil, daß sich der Sperrstift, der in einer Kulisse innerhalb des Schloßgehäuses geführt wird, aufgrund seiner Massenträgheit und der Massenträgheit der Schloßtaste aus seiner das Verriegelungsglied halternden Sperrstellung in die Freigabestellung bewegen könnte, so daß der Schloßmechanismus entriegelt wird und die Schloßzunge aus dem Schloß herausgezogen werden kann.This arrangement has the disadvantage that the locking pin, which is guided in a backdrop within the lock housing, could move from its locked position holding the locking member into the release position due to its inertia and the inertia of the lock key, so that the lock mechanism is unlocked and the lock tongue can be pulled out of the lock.

Es ist daher Aufgabe der vorliegenden Erfindung, ein Sicherheitsgurtschloß der eingangs genannten Art, insbesondere mit nach unten betätigbarer Schloßtaste, so weiterzubilden, daß es auch bei Verzögerungskräften die in Betätigungsrichtung der Schloßtaste und des Öffnungsmechanismus wirken, schocksicher ist, und daß der Sperrstift gegen eine Verschiebung in die Freigabestellung unter dem Einfluß von Verzögerungskräften gesperrt ist.It is therefore an object of the present invention to further develop a seat belt buckle of the type mentioned, in particular with a lock button which can be actuated downwards, in such a way that it is shock-resistant even with decelerating forces which act in the actuating direction of the lock button and the opening mechanism, and in that the locking pin prevents displacement locked in the release position under the influence of delay forces.

Diese Aufgabe wird durch die im Anspruch 1 gekennzeichneten Merkmale gelöst.This object is achieved by the features characterized in claim 1.

Mit einer derartigen Ausbildung des Sicherheitsgurtschlosses ist sichergestellt, daß sich auch bei auftretenden hohen Massenkräften das Sicherheitsgurtschloß nicht unbeabsichtigt entriegeln kann, da der Sperrstift sicher in seiner sperrenden Position gehalten wird, da seine Bewegungsbahn in der Kulisse durch das Sperrelement blockiert ist und das Sperrelement nicht erst durch Beschleunigungskräfte zur Einwirkung kommt. Dabei werden ein in einer Kulissenführung geführter Sperrstift und ein entsprechend geführter Sperrhebel als Verriegelungselement als gleichwirkend angesehen, so daß nachstehend das Verriegelungselement als Sperrstift bezeichnet wird.With such a design of the seat belt buckle it is ensured that the seat belt buckle cannot be unlocked unintentionally even when high mass forces occur, since the locking pin is held securely in its locking position, since its path of movement in the backdrop is blocked by the locking element and the locking element does not first comes into play through acceleration forces. Here, a locking pin guided in a link guide and a correspondingly guided locking lever are regarded as the locking element as having the same effect, so that the locking element is referred to below as the locking pin.

Gemäß einer bevorzugten Ausführungsform ist dabei vorgesehen, daß an einem freien Ende des ersten Arms eine Sperrstiftaufnahmeeinziehung ausgebildet ist. Hierdurch wird der Sperrstift sozusagen im Sperrelement verhakt, und beide verriegeln sich gegenseitig und sind gegen ein unbeabsichtigtes Lösen voneinander gesichert.According to a preferred embodiment, it is provided that a locking pin receptacle is formed on a free end of the first arm. As a result, the locking pin is hooked, so to speak, in the locking element, and both lock each other and are secured against unintentional detachment from one another.

Bevorzugterweise ist dabei vorgesehen, daß die Sperrstiftaufnahmeeinziehung durch eine zu einem ersten Abschnitt der Bewegungsbahn des Sperrstiftes etwa parallel, oberen Begrenzungskante und zwei sich von der oberen Begrenzungskante zu einer Öffnung der Sperrstifaufnahmeeinziehung erstreckende seitliche Begrenzungskanten begrenzt wird, und daß die Ausbildung und Anordnung so getroffen ist, daß bei einer starken Verzögerung (Schock) der Sperrstift in die Sperrstiftaufnahme hineinbewegt und dadurch das Sperrelement blockiert wird.It is preferably provided that the locking pin receptacle is delimited by a top section edge that is approximately parallel to a first section of the movement path of the locking pin and two lateral delimitation edges that extend from the upper delimitation edge to an opening of the locking pin receptacle opening, and that the design and arrangement is made in this way that in the event of a strong delay (shock), the locking pin moves into the locking pin receptacle and the locking element is thereby blocked.

Um die Sicherheit noch weiter zu vergrößern, ist vorgesehen, daß mindestens eine der Begrenzungskanten der Sperrstiftaufnahmeeinziehung zu einer durch den Drehpunkt des Sperrelements und einem vorgesehenen Kontaktpunkt des Sperrstiftes mit der Begrenzungskante verlaufenden Ebene in Richtung zu einem unteren Ende der Begrenzungskante einen Winkel alpha von etwa 90° oder kleiner aufweist. Hierdurch wird erreicht, daß der Sperrstift mit seinem Schwerpunkt so angeordnet ist, daß bei Auftreten von Massenkräften am Sperrstift diese so auf das Sperrelement übertragen werden, daß dieses weiter in seine den Sperrstift blockierende Stellung hineingedreht wird, so daß seine Verriegelungssicherheit bei starker Verzögerung (Schock) zunimmt, wobei das Sperrelement ggf. auch aufgrund der eigenen Massenträgheit in seine Verriegelungsstellung gedrückt wird.In order to further increase security, it is provided that at least one of the boundary edges of the locking pin receptacle retraction forms an angle alpha of approximately 90 to a plane running through the pivot point of the locking element and an intended contact point of the locking pin with the boundary edge in the direction of a lower end of the boundary edge ° or less. This ensures that the locking pin is arranged with its center of gravity so that when mass forces occur on the locking pin, these are transmitted to the locking element in such a way that it is rotated further into its position blocking the locking pin, so that its locking security in the event of a strong delay (shock ) increases, the locking element possibly being pressed into its locking position due to its own inertia.

Gemäß einer anderen bevorzugten Ausführungsform ist vorgesehen, daß an einem freien Ende des ersten Arms ein mindestens klauen- oder hakenförmiges Ansatzteil ausgebildet ist, wobei zur Vergrößerung der Sicherheit das Ansatzteil eine nach innen gekrümmte, halbkugelförmig eingezogene oder drei- oder mehreckförmig eingezogene Anlagefläche für den Sperrstift aufweist. Hierdurch wird ein Verhaken zwischen dem Sperrstift und dem Sperrelement erreicht, wobei sich zusätzlich die voranstehend beschriebenen positiven Wirkungen bei evtl. Auftreten von Massenkräften ergeben.According to another preferred embodiment it is provided that an at least claw-shaped or hook-shaped attachment part is formed on a free end of the first arm, with the purpose of increasing safety the attachment part has an inwardly curved, hemispherical, or triangular or polygonal, contact surface for the locking pin. In this way, a jamming between the locking pin and the locking element is achieved, with the above-described positive effects additionally occurring if mass forces occur.

Es ist vorgesehen, daß das Sperrelement einen abgewinkelten Schwenkarm zur Betätigung und Verschwenkung aus einer Grundstellung, in der sich das Sperrelement bzw. die Sperrstiftaufnahmeeinziehung oder das klauen- oder hakenförmige Ansatzteil in der Bewegungsbahn des Sperrstiftes befindet, in die Entriegelungsstellung durch die Schloßtaste aufweist. Diese Ausführungsform hat den Vorteil, daß sich das Sperrelement in einer Grundstellung immer in der Bewegungsbahn des Sperrstiftes befindet, so daß beim Einschieben der Schloßzunge und damit beim Verriegeln des Sicherheitsgurtschlosses sichergestellt ist, daß beim verriegelten Sicherheitsgurtschloß sich das Sperrelement immer in der Bewegungsbahn des Sperrstiftes befindet, so daß eine größtmögliche Sicherheit gegen ein unbeabsichtigtes Lösen unter der Einwirkung von Massenkräften aufgrund einer Beschleunigung bzw. Verzögerung des Gurtschlosses gegeben ist.It is provided that the locking element has an angled swivel arm for actuation and pivoting from a basic position, in which the locking element or the locking pin receptacle or the claw-shaped or hook-shaped attachment part is in the movement path of the locking pin, into the unlocking position by the lock key. This embodiment has the advantage that the locking element is always in the movement path of the locking pin in a basic position, so that when the lock tongue is inserted and thus when the seat belt buckle is locked, it is ensured that the locking element is always in the movement path of the locking pin when the seat belt lock is locked , so that the greatest possible security against unintentional loosening under the influence of inertial forces is given due to an acceleration or deceleration of the buckle.

Dabei kann vorteilhafterweise vorgesehen werden, daß die eine der Seitenkanten der Sperrstiftaufnahmeeinziehung, die nicht für die Haltung des Sperrstiftes im Beschleunigungsfall vorgesehen ist oder ein ein zusätzliches weiteres Ansatzteil das Verriegelungsteil untergreifend eine Verriegelung des Schlosses verhindert, falls das Sperrelement beim Verriegeln nicht in vorgesehener Weise die Bewegungsbahn des Sperrstiftes freigeben sollte, so daß auch immer ein sicheres Verriegeln und Sperren durch den Sperrstift sichergestellt ist.It can advantageously be provided that one of the side edges of the locking pin receptacle, which is not provided for holding the locking pin in the event of acceleration, or that an additional additional attachment part, under the locking part, prevents locking of the lock, if the locking element should not release the path of movement of the locking pin in the intended manner when locking, so that a secure locking and locking is always ensured by the locking pin.

Weiterhin ist vorteilhafterweise vorgesehen, daß die Betätigung des Sperrelements durch die Schloßtaste über ein Verbindungselement zwischen dem Schwenkarm und der Schloßtaste erfolgt.Furthermore, it is advantageously provided that the locking element is actuated by the lock button via a connecting element between the swivel arm and the lock button.

Die Ausbildung der einzelnen Teile und deren Anordnung ist so vorgesehen, daß der erste Arm des Sperrelements zum zweiten Schwenkarm einen Winkel Beta von ungefähr 90° aufweist. Die Kraftangriffspunkte am ersten und am zweiten Arm liegen dabei etwa in einer gemeinsamen Ebene.The formation of the individual parts and their arrangement is provided so that the first arm of the locking element to the second pivot arm has an angle beta of approximately 90 °. The force application points on the first and second arm lie approximately in a common plane.

Dabei ist vorgesehen, daß das Sperrelement entweder einen Massenschwerpunkt aufweist, der in den Drehpunkt fällt oder einen Schwerpunkt aufweist, der so zum Drehpunkt beabstandet und angeordnet ist, daß auftretende G-Kräfte das Sperrteil in seiner sperrenden Stellung halten.It is provided that the locking element either has a center of gravity that falls in the pivot or has a center of gravity that is spaced and arranged so that occurring G-forces hold the locking part in its locking position.

Das Sperrelement ist dabei mit der als Schiebetaste ausgebildeten Schloßtaste über die Kupplung direkt verbunden und weist eine so große Drehträgheitsmasse auf, daß auch bei zusammenfallendem Schwer- und Drehpunkt eine Halterung der Schloßtaste gewährleistet wird.The locking element is connected directly to the lock key designed as a sliding key via the coupling and has such a large mass of rotational inertia that even when the center of gravity and pivot point coincide, the lock key is retained.

Ausführungsbeispiele der Erfindung werden nachstehend anhand der Zeichnung näher erläutert. Es zeigen

Fig. 1
in einem Längsschnitt ein Sicherheitsgurtschloß mit eingeschobener und verriegelter Einsteckzunge in einer Verriegelungsstellung des Sperrelements,
Fig. 2 bis 6
in schematischen Teildarstellungen die Anordnung des Sperrstiftes, des Sperrelements und der einzelnen Elemente im Gehäuse bei verschiedenen Betätigungspositionen,
Fig. 7
in einer schematischen Teildarstellung das Sperrelement gemäß Fig. 1 bis 6, und
Fig. 8
in einer schematischen Teildarstellung eine weitere Ausführungsform eines Sperrelementes.
Embodiments of the invention are explained below with reference to the drawing. Show it
Fig . 1
in a longitudinal section a seat belt buckle with inserted and locked tongue in a locking position of the locking element,
Fig . 2 to 6
the arrangement of the locking pin, the locking element and the individual elements in the housing in different actuation positions in schematic partial representations,
Fig . 7
in a schematic partial representation of the locking element according to FIGS. 1 to 6, and
Fig . 8th
a schematic partial representation of a further embodiment of a locking element.

In den Figuren 1 bis 7 ist eine erste Ausführungsform eines Sicherheitsgurtschlosses 100 dargestellt. In dem in in der Zeichnung nicht dargestellten Schloßkappen gebetteten Schloßgehäuse 11 ist die Schloßtaste 12 in Betätigungsrichtung B längsverschiebbar zum Öffnen des Schloßmechanismus 13 mit dem Auswerfer 113, dem Cantilever 114 und der Hauptfeder 115 gelagert. Die Ausbildung ist dabei in üblicher Weise so vorgesehen, daß die Schloßtaste 12 den lasttragenden Schloßmechanismus 13 nach einem Öffnungshub zur Freigabe der Einsteckzunge 14 öffnet, wobei die Einsteckzunge 14 über ein schwenkbar im Schloßgehäuse 11 gelagertes Verriegelungsteil 10 verriegelbar ist, das über einen in einer Kulissenführung 15 des Schloßgehäuses 11 geführten und auf einer Bewegungsbahn 17 in eine Sperrstellung und in eine Freigabestellung bewegbaren Sperrstift 16 sperrbar ist. Im Schloßgehäuse 11 ist nun ein am Schloßgehäuse 11 um einen Drehpunkt 18 schwenkbar gelagertes Sperrelement 19 vorgesehen, das zwei Sperrelementarme 20,21 aufweist, die bevorzugterweise einen Winkel Beta von ungefähr 90° zueinander und bei dieser Ausführungsform einen Winkel Beta von ca. 80° zueinander aufweisen. Das Sperrelement 19 ist um den Drehpunkt 18 drehbar und der erste Arm 20 ist dabei in die Bewegungsbahn 17 des Sperrstiftes 16 hineinbewegbar ausgebildet, und zwar so, daß sich das Sperrelement 19 in der Bewegungsbahn 17 des Sperrstiftes 16 befindet und diesen gegen eine Bewegung aus der Sperrstellung in die Freigabestellung blockiert, wie dies in Figur 1, 7 und 8 dargestellt ist. Zur Verschwenkung des Sperrelements 19 über den zweiten Arm 21 ist an der Schloßtaste 12 ein Verbindunselement 22 vorgesehen, die bei entsprechender Bewegung der Schloßtaste 12 in Betätigungsrichtung B den Arm 21 beaufschlagt und mitbewegt und das Sperrelement 19 um den Drehpunkt 18 in die Freigabestellung verschwenkt. Bei dem Verbindungselement 22 handelt es sich um ein sog. Schubkurbelgetriebe 122, bei dem ein am freien Ende 21a des Schwenkarms 21 angeordneter Stift 121a in einem Schlitz 121b der Schloßtaste 12 beweglich angeordnet ist und bei einer Bewegung der Schloßtaste 12 von Schlitz 121b in Bewegungsrichtung mitgenommen wird (Fig.5), wobei der Stift 121a dann gleichzeitig eine entsprechende Aufwärts- bzw. Abwärtsbewegung durchführt. Alternativ kann hier auch ein übliches Drehgelenk und ein teleskopierbarer Arm 21 vorgesehen werden, um die gewünschte Übertragung der linearen Bewegung der Schloßtaste 12 in eine Drehbewegung des Sperrelements 19 durchzuführen. Bei der Rückführung der als Schiebetaste ausgeführten Schloßtaste 12 unter Federeinwirkung wird dann das Sperrelement 19 über das Verbindungselement 22 wieder in die Grundstellung geschwenkt. Weiterhin ist an der Schloßtaste 12 ein Stößelteil 23 vorgesehen, das bei entsprechender Betätigung der Schloßtaste in Betätigungsrichtung B nach Verschwenkung des Sperrelements 19 aus der sperrenden Stellung in eine die Bewegungsbahn 17 freigebende Stellung den Sperrstift 16 beaufschlagt und in die Freigabestellung verschiebt.A first embodiment of a seat belt buckle 100 is shown in FIGS. 1 to 7. In the lock housing 11, which is embedded in the lock caps (not shown in the drawing), the lock key 12 is mounted so as to be longitudinally displaceable in the actuation direction B to open the lock mechanism 13 with the ejector 113, the cantilever 114 and the main spring 115. The training is provided in the usual way so that the lock key 12 opens the load-bearing lock mechanism 13 after an opening stroke to release the tongue 14, the tongue 14 is locked via a pivotally mounted in the lock housing 11 locking member 10, which via a in a link guide 15 of the lock housing 11 and lockable on a movement path 17 in a locking position and in a release position locking pin 16 can be locked. In the lock housing 11 is now on the lock housing 11 a pivot point 18 pivotally mounted locking element 19 is provided, which has two locking element arms 20, 21, which preferably have an angle beta of approximately 90 ° to one another and, in this embodiment, an angle beta of approximately 80 ° to one another. The locking element 19 is rotatable about the pivot point 18 and the first arm 20 is designed to be movable into the path of movement 17 of the locking pin 16, in such a way that the locking element 19 is in the path of movement 17 of the locking pin 16 and this against movement from the Locked position blocked in the release position, as shown in Figure 1, 7 and 8. To pivot the locking element 19 via the second arm 21, a connecting element 22 is provided on the lock key 12, which acts and moves the arm 21 when the lock key 12 is moved in the actuating direction B and pivots the locking element 19 about the pivot point 18 into the release position. The connecting element 22 is a so-called thrust crank mechanism 122, in which a pin 121a arranged on the free end 21a of the swivel arm 21 is movably arranged in a slot 121b of the lock key 12 and is carried along by slot 121b in the direction of movement when the lock key 12 is moved (Fig. 5), the pin 121a then simultaneously carrying out a corresponding upward or downward movement. Alternatively, a conventional swivel joint and a telescopic arm 21 can also be provided here in order to carry out the desired transmission of the linear movement of the lock key 12 into a rotational movement of the locking element 19. When the lock key 12, designed as a sliding key, is returned under the action of a spring, the locking element 19 is then moved over the connecting element 22 pivoted back into the basic position. Furthermore, a plunger part 23 is provided on the lock key 12 which, when the lock key is actuated appropriately in the actuation direction B after pivoting the locking element 19 from the locking position into a position releasing the movement path 17, acts on the locking pin 16 and moves it into the release position.

Um die Bewegungsabläufe optimal durchzuführen und um sicherzustellen, daß sich auch bei auftretenden Verzögerungskräften in Beschleunigungsrichtung a keine ungewollte Entriegelung ergibt, sind ganz bestimmte geometrische Verhältnisse vorgesehen, wie diese in Figur 2 bis 7 schematisch dargestellt sind. Zunächst ist zwischen der entsprechenden Begrenzungskante 26 der Sperrstiftaufnahmeeinziehung 24 des Sperrelements 19 und dem Sperrstift bei dem in Figur 7 dargestellten unbeschleunigten Zustand ein Abstand I vorgesehen, um eine Schwenkbewegung des Sperrelements 19 in die Freigabestellung zu ermöglichen, wie dies in Figur 6 angedeutet ist, bevor das Stößelteil 23 den Sperrstift 16 bei Betätigung verschiebt.In order to optimally carry out the movement sequences and to ensure that there is no unwanted unlocking even in the event of deceleration forces occurring in the acceleration direction a, very specific geometric relationships are provided, as shown schematically in FIGS. 2 to 7. First, a distance I is provided between the corresponding boundary edge 26 of the locking pin receptacle recess 24 of the locking element 19 and the locking pin in the unaccelerated state shown in FIG. 7 in order to enable a pivoting movement of the locking element 19 into the release position, as is indicated in FIG. 6, before the plunger part 23 moves the locking pin 16 when actuated.

Bei der neuen Schloßausbildung wurde das Funktionsprinzip der bekannten Schlösser der eingangs genannten Art beibehalten: bei verriegeltem Sicherheitsgurtschloß 100 stützt sich bei Belastung das Verriegelungsteil 10 einmal direkt mit der Spitze und einmal indirekt über den Sperrstift 16 am Gehäusen 11 ab, so daß die Einsteckzunge 14 nicht herausgezogen werden kann (Fig.2).In the new lock design, the principle of operation of the known locks of the type mentioned at the outset was retained: when the seat belt buckle 100 is locked, the locking part 10 is supported, once under load, directly with the tip and once indirectly via the locking pin 16 on the housing 11, so that the tongue 14 does not can be pulled out (Fig. 2).

Wird der Sperrstift 16 durch Druck auf die Schloßtaste 12 verschoben (Fig.3), so daß er sich in die entriegelte Position bewegt (Fig.4), öffnet das Sicherheitsgurtschloß 100 und die Einsteckzunge 14 wird ausgeworfen.If the locking pin 16 is pushed by pressing the lock button 12 (FIG. 3) so that it moves into the unlocked position (FIG. 4), the seat belt buckle 100 opens and the tongue 14 is ejected.

Bei Verwendung eines Schlosses nach dem Stand der Technik an einem Strammer kann folgendes geschehen:
bei vollständiger Strammung des Schlosses nach unten, prallt das Schloß mit einer Geschwindigkeit von bis zu 50 km/h auf den Endanschlag und wird dabei stark abgebremst. Durch die Trägheit der Drucktaste und des Sperrstiftes bewegen sich diese Teile weiter (in das Schloß hinein) und führen zum Öffnen des Schlosses und damit zum Auswerfen der Einsteckzunge. Um dieses zu verhindern, ist ein Sperrelement 19 vorgesehen, das entweder eine Sperrstiftaufnahmeeinziehung 24 (Fig.7) oder zwei klauen- oder hakenförmige Ansatzteile 29,30 (Fig.8) aufweist, die den Sperrstift 16 in der verriegelten Position festhalten (Fig.5). Durch entsprechende Konstruktion und Anordnung der Teile ist das System Schloßtaste, Sperrelement und Sperrstift so abgestimmt, daß diese Teile sich beim Aufprall nicht bewegen und daher das Sicherheitsgurtschloß verriegelt bleibt. Trotzdem ist gewährleistet, daß das Sicherheitsgurtschloß jederzeit vom Benutzer entriegelt werden kann: bei Drücken der Schloßtaste 12 dreht sich das Sperrelement 19, die Schloßtaste 12 schiebt den Sperrstift 16 in die entriegelte Position (Entriegelungsstellung) und das Schloß ist geöffnet (Fig.6).When using a state-of-the-art lock on a strammer, the following can happen:
when the lock is fully tightened down, the lock hits the end stop at a speed of up to 50 km / h and is braked strongly in the process. Due to the inertia of the push button and the locking pin, these parts move further (into the lock) and lead to the opening of the lock and thus to the ejection of the insert tongue. To prevent this, a locking element 19 is provided, which either has a locking pin receptacle recess 24 (FIG. 7) or two claw-shaped or hook-shaped attachment parts 29, 30 (FIG. 8) that hold the locking pin 16 in the locked position (FIG. 5). Due to the appropriate construction and arrangement of the parts, the system lock button, locking element and locking pin is coordinated so that these parts do not move in the event of an impact and therefore the seat belt buckle remains locked. Nevertheless, it is ensured that the seat belt buckle can be unlocked by the user at any time: when the lock button 12 is pressed, the locking element 19 rotates, the lock button 12 pushes the locking pin 16 into the unlocked position (unlocking position) and the lock is open (FIG. 6).

Es ist bei der Ausführungsform gemäß Fig. 1 bis 7 vorgesehen, daß am freien Ende 20a des Arms 20 eine etwa rechteckförmige Sperrstiftaufnahmeeinziehung 24 ausgebildet ist, die von einer oberen Begrenzungskante 25, einer vorderen Begrenzungskante 26 und einer hinteren Begrenzungskante 27 umfaßt wird und über die Öffnung 28 für den Eintritt und Austritt des Sperrstiftes 16 offen ist. Die vordere Begrenzungskante 26 weist zu einer durch den Drehpunkt 18 des Sperrelements 19 und einem vorgesehenen Kontaktpunkt K des Sperrstifts 16 mit der Begrenzungskante 26 verlaufende Ebene E in Richtung zu einem unteren Ende 26a der Begrenzungskante 26 einen Winkel alpha von etwa 90° oder kleiner und bevorzugterweise etwa 70° auf, damit eine Andruckkraft des Sperrstiftes 16 auf die Begrenzungskante 26 zu einer Drehung in Richtung des Pfeiles Y führt. Bei auftretenden Beschleunigungskräften wird der Sperrstift 16 in der Sperrstiftaufnahmeeinziehung 24 in Anlage an die Begrenzungskante 26 der Sperrstiftaufnahmeeinziehung 24 bewegt und dort erfolgt eine gegenseitige Abstützung in alle vier Richtungen, da nach oben und unten, d.h. senkrecht zur Bewegungsbahn 17 eine Abstützung durch die Kulissenführung 15 erfolgt, während in Richtung der Bewegungsbahn 17 eine Abstützung durch die Begrenzungskanten 26,27 der Sperrstiftaufnahmeeinziehung 24 erfolgt und der Sperrstift 16 gegen die auftretende Verzögerungskraft gehalten wird. Dieses System bietet ebenfalls eine völlige Sicherheit auch bei auftretenden Schocks, wobei gleichzeitig gewährleistet ist, daß eine problemlose Entsperrung erfolgen kann, wie dies in Figur 6 dargestellt ist.It is provided in the embodiment according to FIGS. 1 to 7 that at the free end 20a of the arm 20 a approximately rectangular locking pin receiving recess 24 is formed, which is surrounded by an upper boundary edge 25, a front boundary edge 26 and a rear boundary edge 27 and is open via the opening 28 for the entry and exit of the locking pin 16. The front boundary edge 26 has an angle alpha of approximately 90 ° or less and preferably to a plane E running through the pivot point 18 of the locking element 19 and an intended contact point K of the locking pin 16 with the boundary edge 26 in the direction of a lower end 26a of the boundary edge 26 about 70 ° so that a pressing force of the locking pin 16 on the boundary edge 26 leads to a rotation in the direction of the arrow Y. When acceleration forces occur, the locking pin 16 is moved in the locking pin receptacle 24 in contact with the boundary edge 26 of the locking pin receptacle 24 and there is mutual support in all four directions, since up and down, ie perpendicular to the movement path 17, there is support by the link guide 15 , while in the direction of the movement path 17 there is support by the boundary edges 26, 27 of the locking pin receptacle recess 24 and the locking pin 16 is held against the decelerating force that occurs. This system also offers complete security even in the event of shocks, while at the same time ensuring that problem-free unlocking can take place, as shown in FIG. 6.

Bei der in Fig.8 dargestellten Ausführungsform weist das Sperrelement 19 zwei klauen- oder hakenförmige Ansatzteile 29,30 auf, von denen in der Zeichnung nur ein Ansatzteil 29 zu sehen ist, da die Ansatzteile 29,30 zueinander einen Abstand aufweisen. Im kritschen Beschleunigungsfall umgreifen die Haken den Sperrstift 16, so daß dieses wie im Fall der Sperrstiftaufnahmeeinziehung sicher festgehalten wird. Hierzu ist vorgesehen, daß das Ansatzteil 29,30 eine nach innen gekrümmte, halbkugelförmig eingezogene oder drei- oder mehreckförmig eingezogene Anlagefläche 31 für den Sperrstift 16 aufweist. Auch hierbei ist vorgesehen, daß zwischen der unteren Spitze 29a des hakenförmigen Ansatzteils 29 bei dem in Fig.8 dargestellten unbeschleunigten Zustand ein Abstand I gegeben ist, um eine Schwenkbewegung des Sperrelementes 19 in die Freigabestellung zu ermöglichen, bevor das Stößelteil 23 den Sperrstift bei Betätigung verschiebt.In the embodiment shown in Figure 8, the locking element 19 has two claw-shaped or hook-shaped Extension parts 29, 30, of which only one extension part 29 can be seen in the drawing, since the extension parts 29, 30 are at a distance from one another. In the event of a critical acceleration, the hooks engage around the locking pin 16, so that this is securely held, as in the case of the locking pin receiving recess. For this purpose, it is provided that the attachment part 29, 30 has an inwardly curved, hemispherical, or triangular or polygonal contact surface 31 for the locking pin 16. Here, too, it is provided that there is a distance I between the lower tip 29a of the hook-shaped extension part 29 in the unaccelerated state shown in FIG shifts.

Der Grundgedanke bei allen Ausführungsformen besteht darin, daß durch eine Blockierung sowohl des Sperrstiftes als auch der Schloßtaste im Fall einer auftretenden Beschleunigung mit äußerster Sicherheit ein unbeabsichtigtes Öffnen des Schlosses vermieden werden kann.The basic idea in all embodiments is that by blocking both the locking pin and the lock button in the event of acceleration occurring, an inadvertent opening of the lock can be avoided.

Bezugszeichenliste:Reference symbol list:

SicherheitsgurtschloßSeat belt buckle
100100
AuswerferEjector
113113
CantileverCantilever
114114
HauptfederMain spring
115115
VerriegelungselementLocking element
116116
VerriegelungsteilLocking part
1010th
SchloßgehäuseLock housing
1111
SchloßtasteLock button
1212th
SchloßmechanismusLock mechanism
1313
EinsteckzungeTongue
1414
PfeilrichtungArrow direction
BB
BeschleunigungsrichtungDirection of acceleration
aa
KulissenführungScenery tour
1515
SperrstiftLock pin
16,16,
BewegungsbahnTrajectory
17,17a,17b17.17a, 17b
Drehpunktpivot point
1818th
SperrelementLocking element
1919th
Armpoor
2020th
freies Endefree end
20a20a
Armpoor
2121
freies Endefree end
21a21a
Kupplungclutch
2222
StößelteilRam part
2323
SperrstiftaufnahmeeinziehungLock pin pinch recovery
2424th
BegrenzungskanteBoundary edge
25,26,2725,26,27
unteres Endelower end
26a26a
Öffnungopening
2828
AnsatzteileLugs
29,3029.30
untere Spitzelower tip
29a29a
Flächesurface
3131
SchubkurbelgetriebeSlider crank gear
122122
Stiftpen
121a121a
Schlitzslot
121b121b

Claims (12)

  1. Seat belt buckle (100) for vehicles for receiving and locking an insert blade (14) in a casing (11) and a buckle key (12) for neutralizing the locking effect, in which the buckle key (12) is opened against the action of a spring (115) when the load-carrying buckle mechanism (13) is actuated in the direction of actuation (arrow B) following an opening travel for releasing the insert blade (14) and wherein the insert blade (14) is lockable by means of a locking member (10) swivellably supported between a release position and a locking position and is lockable with the aid of a locking pin (16) conducted in a guide bar bracket (15) in the casing (11) and movable in a path of travel (17) predetermined by the guide bar bracket (15) into a locking and into a release position or, with the aid of a catch lever in the form of a blocking element (116) movable in a predetermined path of travel into a locking position and into a release position and with an ejector (114) which presses the insert blade (14) in the unlocking position of the locking member (10) out of the casing (11),
    characterized in that
    a blocking element (19) rotatably supported on the casing (11) which is rotatable about a swivel point (18), is movable with a first free arm (20) into a locking position engaging into the path of travel (17) blocking the blocking element (116) against a movement out of the blocking position and, when the buckle key (12) is actuated, clearing the path of travel (17) of the blocking element (116) so that the same can be moved out of the path of travel (17) into an unlocked position and in that the blocking element (19) possesses a second angled swivel arm (21) for actuating and swivelling the blocking element (19) by means of the buckle key (12) out of an initial position in which the blocking element (19) is located in th path of travel (17), into a position which releases the blocking element (116), while the second swivel arm (21), on its free end (21a), is connected with the buckle key (12) by means of a connecting element (22).
  2. Seat belt buckle according to Claim 1,
    characterized in that the connecting element (22) is a slider crank mechanism.
  3. Seat belt buckle according to either Claim 1 or 2,
    characterized in that,
    on a free end (20a) of the first arm (20), a locking pin receiving recess (24) is constructed.
  4. Seat belt buckle according to Claim 3,
    characterized in that
    the locking pin receiving recess (24) is delimited by an upper delimitation edge (25) extending roughly parallel to a first section (17a) of the path of travel (17) of the locking pin (16) in the form of a blocking element (116) and by two lateral delimitation edges (26,27) extending from the upper delimitation edge (25) to an opening (28) of the locking pin receiving recess (24).
  5. Seat belt buckle according to any of Claims 1 to 4,
    characterized in that
    at least one of the delimitation edges (26) of the locking pin receiving recess (24), relative to a plane (E) proceeding through the swivel point (18) of the blocking element (19) and a provided contact point (K) of the locking pin (16) with the delimitation edge (26), in the direction towards a lower end (26a) of the delimitation edge (26), possesses an angle alpha of approximately 90° or smaller.
  6. Seat belt buckle according to Claim 1,
    characterized in that,
    on a free end (20a) of the first arm (20), at least one claw or hook-shaped shoulder portion (29,30) is formed.
  7. Seat belt buckle according to Claim 6,
    characterized in that
    the shoulder port ion (29,30) possesses an inwardly curved, hemispherically recessed or trangularly or polygonally recessed bearing surface (31) for the locking pin (16).
  8. Seat belt buckle according to any of Claims 2 to 7,
    characterized in that
    one of the lateral delimitation edges (26,27) of the locking pin receiving recess (24) or the shoulder portion (29,30) of the first free arm (20) of the blocking element (19), in a non-accelerated state, in which the same is disposed in the path of travel (17) in the direction of acceleration (a), is disposed so as to have a distance (I) to the locking pin (16) so as to make a swivel motion of the blocking element (19) into the release position possible.
  9. Seat belt buckle according to any of Claims 1 to 8,
    characterized in that
    the first arm (20) of the blocking element (19), relative to the second swivel arm (21), possesses an angle alpha of approximately 90°.
  10. Seat belt buckle according to any of Claims 1 to 9,
    characterized in that
    the blocking element (19) is constructed and disposed with its gravity center and its swivel point (18) in such a way that its locking safety is increased in the event of a strong deceleration (shock) in the direction of acceleration (direction of the arrow a)) and in that the blocking element (19), owing to the mass moment of inertia, is pressed into its locking position.
  11. Seat belt buckle according to any of Claims 1 to 10,
    characterized in that
    the mass of the locking pin (16) and of the buckle key (12) and the mass of the blocking element (19) intercat in such a fashion that the sum of the occurring torque (forces of gravity x lever arms) about the swivel point (18) acts in such a way that the blocking element (19) is pressed into its blocking position.
  12. Seat belt buckle according to any of Claims 1 to 10,
    characterized in that the rotary inertial mass of the blocking element (19) is so great that a rotational movement of the blocking element (19) about the swivel point (18) during a briefly occurring state of acceleration (shock) is avoided with certainty or merely leads to a minor movement which does not open the buckle.
EP93102945A 1992-02-27 1993-02-25 Seat belt buckle with pin locking device Expired - Lifetime EP0557983B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9202528U DE9202528U1 (en) 1992-02-27 1992-02-27 Seat belt buckle with locking lock
DE9202528U 1992-02-27

Publications (2)

Publication Number Publication Date
EP0557983A1 EP0557983A1 (en) 1993-09-01
EP0557983B1 true EP0557983B1 (en) 1996-05-08

Family

ID=6876593

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93102945A Expired - Lifetime EP0557983B1 (en) 1992-02-27 1993-02-25 Seat belt buckle with pin locking device

Country Status (3)

Country Link
EP (1) EP0557983B1 (en)
DE (2) DE9202528U1 (en)
ES (1) ES2087590T3 (en)

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DE102004010099B4 (en) * 2004-02-27 2007-11-22 Autoliv Development Ab Locking element for a shock-proof belt buckle
US7370393B2 (en) 2004-09-20 2008-05-13 Delphi Technologies, Inc. Seat belt buckle for use with pretensioner
US7543363B2 (en) 2005-05-26 2009-06-09 Delphi Technologies, Inc. Seat belt buckle for use with pretensioner

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DE59302478D1 (en) 1996-06-13
ES2087590T3 (en) 1996-07-16
EP0557983A1 (en) 1993-09-01
DE9202528U1 (en) 1992-04-16

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