EP0248940B1 - Actuating relay for a vehicle seat belt tensioning device - Google Patents

Actuating relay for a vehicle seat belt tensioning device Download PDF

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Publication number
EP0248940B1
EP0248940B1 EP86112896A EP86112896A EP0248940B1 EP 0248940 B1 EP0248940 B1 EP 0248940B1 EP 86112896 A EP86112896 A EP 86112896A EP 86112896 A EP86112896 A EP 86112896A EP 0248940 B1 EP0248940 B1 EP 0248940B1
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EP
European Patent Office
Prior art keywords
contact system
annular magnetic
longitudinal axis
contact
recess
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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
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EP86112896A
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German (de)
French (fr)
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EP0248940A1 (en
Inventor
Gunter A. Dipl.-Ing. Seeger
Arno Reger
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Hengstler GmbH
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Hengstler Bauelemente GmbH
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/14—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/14—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch
    • H01H35/147—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch the switch being of the reed switch type

Definitions

  • the invention relates to a relay for actuating a belt tensioner or pretensioner on motor vehicle safety belts when colliding with an obstacle with a protective tube or reed contact arrangement which is switched by a magnetic system and according to the preamble of patent claim 1.
  • Such a relay is already known from FR-A 2 366 683, where in a protective tube arrangement a ring magnet is guided in a spring-loaded manner, which triggers the switching operation of the relay contacts in the event of an impact on an obstacle or in another vehicle moving from behind.
  • a relay for actuating a belt tensioner in the manner of a collision sensor is also known, a spring-loaded mass in a housing coming into contact with a plurality of contact elements in the event of an impact against the vehicle with a fixed contact.
  • the present invention is therefore based on the object of developing a relay for actuating a belt tensioner or pretensioner of the type mentioned in such a way that the required switching operation is triggered in a structurally simple design with only a single relay in the event of impacts on the motor vehicle.
  • the switching operation required and to be carried out immediately is to be triggered by a single relay when another motor vehicle drives up from behind.
  • the relay should also be designed so that the shocks that do not occur, or occur approximately in the direction of the longitudinal axis of the vehicle, are detected in a single relay with a simple contact arrangement for triggering the switching process, that is to say, for example, when the motor vehicle is thrown against a lateral obstacle or the shocks caused by another vehicle moving sideways.
  • such a relay is characterized as a solution in that the protective tube or reed contact arrangement is arranged in a housing with its longitudinal axis oriented perpendicular to the direction of travel of the vehicle and vertically to the horizontal plane of the vehicle, and that the annular magnet system encompassing the contact arrangement is arranged perpendicular to the longitudinal axis of the protective tube enclosing the contact arrangement is held essentially horizontally movable via springs equidistant from the contact arrangement in its rest position.
  • the ring-shaped magnet system is guided in a radially enlarged recess of the relay housing and is supported radially around the circumference by springs against the wall of the recess of the housing or on the inside of the ring via springs radially against the protective tube of the contact arrangement and is held equidistant from the contact arrangement in its rest position.
  • the relay housing has a cylindrical recess which runs coaxially with the longitudinal axis of the contact arrangement, and that the annular magnet system is anchored horizontally movably on both end faces of the cylindrical recess under spring tension via spring pairs which are aligned essentially axially parallel to the longitudinal axis of the contact arrangement and is held equidistant from the contact arrangement in its rest position.
  • a further embodiment provides that the ring-shaped magnet system is arranged at the upper edge of a bearing bowl which tapers conically downwards in the outside diameter and crowned at the tapered end and which rests on the end face of the cylindrical recess, in the plane of the ring-shaped magnet system around the circumference is supported by springs against the wall of the recess of the housing or on the inside of the ring by means of springs radially against the protective tube of the contact arrangement and is held in its rest position equidistant from the contact arrangement.
  • the annular magnet system is arranged on the large diameter of a conical spring which is aligned coaxially with the contact arrangement, with its small diameter encompassing a protective tube end of the contact arrangement or a corresponding bearing journal, on an end face of the recess in the housing supports, for the low-friction guidance of the ring-shaped magnet system in a spring transverse to the longitudinal axis of the spring along the other end face of the receptacle of the housing and the magnet system is designed to be equidistant from the contact arrangement in its rest position.
  • the ring-shaped magnet system consisting of a ring magnet consisting of permanent magnetic material or of several, preferably four, iron bars forming an equidistant arrangement between two magnet yokes rings arranged permanent magnets.
  • the ring-shaped magnet system can also consist of a ring made of plastic, individual permanent magnets can be molded into this ring, or the ring consists of a plastic material that is enriched with powdered permanent magnetic material.
  • the bearing bowl used in one embodiment for supporting the annular magnet system can also be formed from a plastic enriched with pulverized permanent magnetic material, or have a corresponding number of permanent magnets molded in the same spacing on the upper edge as an annular magnet system.
  • the bearing bowl can, for example, be supported directly on one end face of the recess in the relay housing or by means of a centrally guiding element and can execute the corresponding wobbling movement.
  • FIG. 1 schematically shows a relay according to the invention, which consists of a housing 2 with a protective tube or reed contact 1 fixed therein and an annular magnet system 4.
  • the magnet system 4 consisting of a permanent magnetic ring, has a substantially larger inner diameter than the diameter of the protective tube or reed contact 1 and is mounted and guided horizontally movably in a horizontal recess 6.
  • the magnetic ring of the magnet system 4 is supported radially by springs 5 on the wall of the recess 6.
  • the springs 5 are arranged evenly distributed around the circumference of the magnetic ring, as can be seen from FIG. 2.
  • FIG. 3 shows a top view of an embodiment similar to FIG. 1 with an annular magnet system 4 supported on the inside of the ring by springs 5 on the protective tube of the contact arrangement 1, which is also guided in a horizontal recess 6 of the relay housing 2.
  • FIG. 4 shows an embodiment which shows the magnet system 4 in a cylindrical recess 6 in the housing 2 which runs coaxially with the longitudinal axis of the contact arrangement 1, the annular magnet system 4 moving horizontally via spring pairs 5 which are aligned essentially axially parallel to the longitudinal axis of the contact arrangement 1 two end faces 7 of the cylindrical recess 6 is anchored under spring tension.
  • FIG. 5 shows in section a further embodiment with an annular magnet system 4 arranged on the upper edge of a bearing bowl 8.
  • the bearing bowl 8 is likewise arranged in a cylindrical recess 6 of the housing 2 which runs coaxially with the longitudinal axis of the contact arrangement.
  • the bearing bowl 8 tapers conically downward from the annular magnet system 4, which forms the largest outer diameter, and is spherical at the tapered end.
  • the tapered end can rest directly on the end face 7 of the cylindrical recess or be guided in the tumbling movement by a centering element.
  • the bearing bowl 8 is supported by springs 5 and the outer wall of the housing 6.
  • the bearing bowl 8 can also be supported on the inside of the ring via springs 5 on the protective tube of the contact system 1.
  • FIG. 6 shows a top view of an annular magnet system 4, which can consist, for example, of a ring made of plastic, in which individual permanent magnets 11, preferably four, are molded.
  • Such a ring for the magnet system 4 can also consist of two iron rings 12, to which individual permanent magnets 11 are interposed spaced around the circumference, as can be seen, for example, from FIG.
  • FIGS. 6 and 7 The embodiments of the ring-shaped magnet system 4 shown in FIGS. 6 and 7 and described for this can of course be used for all embodiments of the relay, including those with a storage bowl 8 (FIG. 7).
  • FIG. 8 shows a further embodiment in which the ring-shaped magnet system 4 is arranged on the large diameter of a conical spring 9 which is aligned coaxially with the contact arrangement 1, with its small diameter encompassing a protective tube end of the contact arrangement 1 or a corresponding bearing pin 10, is supported on an end face 7 of the recess 6 of the housing 2, here the Recess 6 also runs coaxially with the longitudinal axis of the contact arrangement 1.
  • the housing 2 of the relay according to the invention preferably consists of a plastic material which has smooth surfaces, so that when the magnet system 4 is guided or attached to the housing, in some embodiments the magnet system 4 can be moved freely to make contact.
  • the connections 3 of the contact system 1 are led out of the housing 2 in a suitable manner and provided with corresponding connection lugs (not shown).

Landscapes

  • Switches Operated By Changes In Physical Conditions (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Description

Die Erfindung bezieht sich auf ein Relais zur Betätigung eines Gurtstrammers oder -straffers an Kraftfahrzeug-Sicherheitshaltegurten beim Auffahren auf ein Hindernis mit einer von einem Magnetsystem schaltend beaufschlagten Schutzrohr-oder Reedkontaktanordnung nach dem Oberbegriff des Patentanspruches 1.The invention relates to a relay for actuating a belt tensioner or pretensioner on motor vehicle safety belts when colliding with an obstacle with a protective tube or reed contact arrangement which is switched by a magnetic system and according to the preamble of patent claim 1.

Ein derartiges Relais ist bereits aus der FR-A 2 366 683 bekannt, wo in einer Schutzrohranordnung federbelastend ein Ringmagnet geführt wird, der bei einem Aufprall auf ein Hindernis oder bei einem von hinten auffahrenden anderen Fahrzeug den Schaltvorgang der Relaiskontakte auslöst.Such a relay is already known from FR-A 2 366 683, where in a protective tube arrangement a ring magnet is guided in a spring-loaded manner, which triggers the switching operation of the relay contacts in the event of an impact on an obstacle or in another vehicle moving from behind.

Nachteilig hierbei können jedoch mit einem derartigen Relais nicht Stöße erfaßt werden, die abweichend von der Richtung der Fahrzeuglängsachse auf das Kraftfahrzeug einwirken.Disadvantageously, however, such a relay cannot be used to detect shocks which act on the motor vehicle differently from the direction of the longitudinal axis of the vehicle.

Aus der DE-A 1 942 176 ist weiterhin ein Relais zur Betätigung eines Gurtstrammers nach Art eines Kollisionssensors bekannt, wobei eine in einem Gehäuse federbelastet gelagerte Masse mit einer Vielzahl von Kontaktelementen bei einem Stoß gegen das Fahrzeug mit einem festen Kontakt in Berührung kommt.From DE-A 1 942 176 a relay for actuating a belt tensioner in the manner of a collision sensor is also known, a spring-loaded mass in a housing coming into contact with a plurality of contact elements in the event of an impact against the vehicle with a fixed contact.

Diese Anordnung bewirkt zwar auch ein Auslösen des Relais bei Stößen, die abweichend von der Längsrichtung des Kraftfahrzeuges auf dieses einwirken, jedoch ist die Relaisanordnung relativ aufwendig und es muß befürchtet werden, daß beim Aufprall auf den festen Kontakt die beweglichen Kontaktelemente beschädigt werden.Although this arrangement also triggers the relay in the event of impacts which deviate from the longitudinal direction of the motor vehicle, the relay arrangement is relatively complex and it must be feared that the movable contact elements will be damaged upon impact with the fixed contact.

Der vorliegenden Erfindung liegt deshalb die Aufgabe zugrunde, ein Relais zur Betätigung eines Gurtstrammers oder -straffers der genannten Art so weiter zu bilden, daß in konstruktiv einfacher Ausbildung nur mit einem einzigen Relais bei Stößen auf das Kraftfahrzeug der erforderliche Schaltvorgang ausgelöst wird.The present invention is therefore based on the object of developing a relay for actuating a belt tensioner or pretensioner of the type mentioned in such a way that the required switching operation is triggered in a structurally simple design with only a single relay in the event of impacts on the motor vehicle.

Bei der Erfindung soll demnach beim Auffahren des Kraftfahrzeuges auf ein Hindernis also auch bei einem durch ein von hinten auffahrendes anderes Kraftfahrzeug durch ein einziges Relais der erforderliche und unmittelbar zu erfolgende Schaltvorgang ausgelöst werden. Im weiteren soll das Relais auch so ausgebildet sein, daß auch die nicht oder annähernd in Richtung der Fahrzeuglängsachse auftretenden Stöße in einem einzigen Relais mit einer einfachen Kontaktanordnung zur Auslösung des Schaltvorganges erfaßt werden, also auch zum Beispiel die beim Schleudern des Kraftfahrzeuges gegen ein seitliches Hindernis oder die durch ein seitlich auffahrendes anderes Fahrzeug auftretenden Stöße.In the invention, therefore, when the motor vehicle collides with an obstacle, the switching operation required and to be carried out immediately is to be triggered by a single relay when another motor vehicle drives up from behind. Furthermore, the relay should also be designed so that the shocks that do not occur, or occur approximately in the direction of the longitudinal axis of the vehicle, are detected in a single relay with a simple contact arrangement for triggering the switching process, that is to say, for example, when the motor vehicle is thrown against a lateral obstacle or the shocks caused by another vehicle moving sideways.

Entsprechend dieser Aufgabenstellung ist als Lösung ein solches Relais dadurch gekennzeichnet, daß die Schutzrohr- oder Reedkontaktanordnung in einem Gehäuse mit ihrer Längsachse senkrecht zur Fahrtrichtung des Fahrzeuges und vertikal zur Horizontalebene des Fahrzeugs ausgerichtet angeordnet sind, und daß das die Kontaktanordnung umgreifende ringförmige Magnetsystem senkrecht zur Längsachse des die Kontaktanordnung umschließenden Schutzrohres im wesentlichen horizontal beweglich über Federn äquidistant zur Kontaktanordnung in deren Ruhestellung gehalten wird.In accordance with this task, such a relay is characterized as a solution in that the protective tube or reed contact arrangement is arranged in a housing with its longitudinal axis oriented perpendicular to the direction of travel of the vehicle and vertically to the horizontal plane of the vehicle, and that the annular magnet system encompassing the contact arrangement is arranged perpendicular to the longitudinal axis of the protective tube enclosing the contact arrangement is held essentially horizontally movable via springs equidistant from the contact arrangement in its rest position.

Mit dieser Anordnung des ringförmigen Magnetsystems äquidistant um eine vertikal zur Horizontalebene des Fahrzeugs ausgerichtete Reedkontaktanordnung wird erreicht, daß das ringförmige Magnetsystem durch einen aus beliebiger Richtung kommenden Stoß den Schaltvorgang auslöst.With this arrangement of the ring-shaped magnet system equidistant from a reed contact arrangement oriented vertically to the horizontal plane of the vehicle, it is achieved that the ring-shaped magnet system triggers the switching process by an impact coming from any direction.

Das ringförmige Magnetsystem wird gemäss einer Ausführungsform in einer radial erweiterten Ausnehmung des Relaisgehäuses geführt und ist um den Umfang über Federn radial gegen die Wandung der Ausnehmung des Gehäuses oder ringinnenseitig über Federn radial gegen das Schutzrohr der Kontaktanordnung abgestützt und äquidistant zur Kontaktanordnung in deren Ruhestellung gehalten.According to one embodiment, the ring-shaped magnet system is guided in a radially enlarged recess of the relay housing and is supported radially around the circumference by springs against the wall of the recess of the housing or on the inside of the ring via springs radially against the protective tube of the contact arrangement and is held equidistant from the contact arrangement in its rest position.

In einer anderen Ausführungsform ist vorgesehen, daß das Relaisgehäuse eine zylindrische koaxial mit der Längsachse der Kontaktanordnung verlaufende Ausnehmung aufweist, und daß das ringförmige Magnetsystem über im wesentlichen achsparallel mit der Längsachse der Kontaktanordnung ausgerichteten Federpaare horizontal beweglich an beiden Stirnflächen der zylindrischen Ausnehmung unter Federspannung verankert ist und äquidistant zur Kontaktanordnung in deren Ruhestellung gehalten wird.In another embodiment it is provided that the relay housing has a cylindrical recess which runs coaxially with the longitudinal axis of the contact arrangement, and that the annular magnet system is anchored horizontally movably on both end faces of the cylindrical recess under spring tension via spring pairs which are aligned essentially axially parallel to the longitudinal axis of the contact arrangement and is held equidistant from the contact arrangement in its rest position.

Eine weitere Ausführungsform sieht vor, daß das ringförmige Magnetsystem am oberen Rand eine sich nach unten im Außendurchmesser konisch verjüngenden und am verjüngten Ende ballig auslaufenden Lagerschüssel angeordnet ist, die an einer Stirnseite der zylindrischen Ausnehmung lagernd anliegt, in der Ebene des ringförmigen Magnetsystems um den Umfang über Federn gegen die Wandung der Ausnehmung des Gehäuses oder ringinnenseitig über Federn radial gegen das Schutzrohr der Kontaktanordnung abgestützt ist und äquidistant zur Kontaktanordnung in deren Ruhestellung gehalten wird.A further embodiment provides that the ring-shaped magnet system is arranged at the upper edge of a bearing bowl which tapers conically downwards in the outside diameter and crowned at the tapered end and which rests on the end face of the cylindrical recess, in the plane of the ring-shaped magnet system around the circumference is supported by springs against the wall of the recess of the housing or on the inside of the ring by means of springs radially against the protective tube of the contact arrangement and is held in its rest position equidistant from the contact arrangement.

Es ist schließlich in einer weiteren Ausführungsform vorgesehen, daß das ringförmige Magnetsystem am großen Durchmesser einer Kegelfeder angeordnet ist, die koaxial mit der Kontaktanordnung ausgerichtet, mit ihrem kleinen Durchmesser ein Schutzrohrende der Kontaktanordnung oder einen entsprechenden Lagerzapfen umgreifend, sich an einer Stirnseite der Ausnehmung des Gehäuses abstützt, zur friktionsarmen Führung des ringförmigen Magnetsystems in einer quer zur Federlängsachse entlang der anderen Stirnfläche der Aufnehmung des Gehäuses federnd beaufschlagend und das Magnetsystem äquidistant zur Kontaktanordnung in deren Ruhestellung haltend ausgebildet ist.Finally, it is provided in a further embodiment that the annular magnet system is arranged on the large diameter of a conical spring which is aligned coaxially with the contact arrangement, with its small diameter encompassing a protective tube end of the contact arrangement or a corresponding bearing journal, on an end face of the recess in the housing supports, for the low-friction guidance of the ring-shaped magnet system in a spring transverse to the longitudinal axis of the spring along the other end face of the receptacle of the housing and the magnet system is designed to be equidistant from the contact arrangement in its rest position.

Alle Ausführungsformen haben gemeinsam, daß Stöße aus jeder beliebigen Richtung über das ringförmige Magnetsystem zur Auslösung des Schaltvorgangs führen, wobei das ringförmige Magnetsystem aus einem aus permanentmagnetischem Material bestehenden Ringmagnet oder aus mehreren, vorzugsweise vier in gleichabständlicher Anordnung zwischen zwei Magnetjoche bildenden Eisenringen eingeordneten Permanentmagneten besteht.All embodiments have in common that impacts from any direction via the ring-shaped magnet system lead to the triggering of the switching process, the ring-shaped magnet system consisting of a ring magnet consisting of permanent magnetic material or of several, preferably four, iron bars forming an equidistant arrangement between two magnet yokes rings arranged permanent magnets.

Das ringförmige Magnetsystem kann auch aus einem aus Kunststoff geformten Ring bestehen, wobei in diesem Ring einzelne Permanentmagnete eingeformt sein können, oder der Ring aus einem Kunststoffmaterial besteht, das mit pulverisiertem permanentmagnetischen Material angereichert ist.The ring-shaped magnet system can also consist of a ring made of plastic, individual permanent magnets can be molded into this ring, or the ring consists of a plastic material that is enriched with powdered permanent magnetic material.

Auch kann die in einer Ausführungsform für die Abstützung des ringförmigen Magnetsystems zur Verwendung kommende Lagerschüssel aus einem mit pulversisiertem permanentmagnetischem Material angereicherten Kunststoff geformt sein, oder am oberen Rand als ringförmiges Magnetsystem eine entsprechende Anzahl Permanentmagnete in gleichabständlicher Anordnung eingeformt aufweisen. Die Lagerschüssel kann zum Beispiel direkt auf der einen Stirnseite der Ausnehmung des Relaisgehäuses oder mittels eines zentrisch führenden Elements abgestützt sein und die entsprechende Taumelbewegung ausführen.The bearing bowl used in one embodiment for supporting the annular magnet system can also be formed from a plastic enriched with pulverized permanent magnetic material, or have a corresponding number of permanent magnets molded in the same spacing on the upper edge as an annular magnet system. The bearing bowl can, for example, be supported directly on one end face of the recess in the relay housing or by means of a centrally guiding element and can execute the corresponding wobbling movement.

Andere Ausführungsformen sind selbstverständlich im Rahmen der Patentansprüche möglich.Other embodiments are of course possible within the scope of the claims.

Nachfolgend wird die Erfindung an Hand der Zeichnungsfiguren detaillierter beschrieben.The invention is described in more detail below with reference to the drawing figures.

In den Zeichnungen zeigt -

  • Figur 1 eine Schnittdarstellung einer Ausführungsform mit einem um den Umfang über Federn am Gehäuse abgestützten ringförmigen Magnetsystem;
  • Figur 2 schematisch eine Draufsicht auf die Ausführungsform nach Figur 1;
  • Figur 3 schematisch eine Draufsicht auf eine der Figur 1 ähnliche Ausführungsform mit einem ringinnenseitig über Federn am Schutzrohr der Kontaktanordnung abgestützten ringförmigen Magnetsystem;
  • Figur 4 in Schnittdarstellung eine andere Ausführungsform mit einem an Federpaaren stirnseitig der Gehäuseausnehmung gehaltenen ringförmigen Magnetsystem;
  • Figur 5 in Schnittansicht eine weitere Ausführungsform mit einem am oberen Rand einer Lagerschüssel angeordneten, ringförmigen Magnetsystem;
  • Figur 6 eine Draufsicht auf ein ringförmiges Magnetsystem mit einzelnen in einem Ring angeordneten Permanentmagneten;
  • Figur 7 eine Schnittansicht durch einen aus zwei Eisenringen mit zwischengelagerten Permanentmagneten bestehenden Ring als ringförmiges Magnetsystem;
  • Figur 8 eine andere Ausführungsform mit dem ringförmigen Magnetsystem am großen Durchmesser einer Kegelfeder angeordnet.
In the drawings -
  • Figure 1 is a sectional view of an embodiment with an annular magnet system supported around the circumference by springs on the housing;
  • Figure 2 schematically shows a plan view of the embodiment of Figure 1;
  • FIG. 3 schematically shows a plan view of an embodiment similar to FIG. 1 with an annular magnet system supported on the inside of the ring by springs on the protective tube of the contact arrangement;
  • FIG. 4 shows a sectional view of another embodiment with an annular magnet system held on pairs of springs on the end face of the housing recess;
  • 5 shows a sectional view of a further embodiment with an annular magnet system arranged on the upper edge of a storage bowl;
  • FIG. 6 shows a plan view of an annular magnet system with individual permanent magnets arranged in a ring;
  • Figure 7 is a sectional view through a ring consisting of two iron rings with intermediate permanent magnets as an annular magnet system;
  • 8 shows another embodiment with the annular magnet system arranged on the large diameter of a conical spring.

In der Figur 1 ist schematisch ein Relais gemäss der Erfindung dargestellt, welches aus einem Gehäuse 2 mit fest darin gelagertem Schutzrohr- oder Reedkontakt 1 sowie einem ringförmigen Magnetsystem 4 besteht. Das aus einem permanentmagnetischen Ring bestehende Magnetsystem 4 besitzt gegenüber dem Durchmesser des Schutzrohr- oder Reedkontakt 1 einen wesenltich größeren Innendurchmesser und ist in einer horizontalen Ausnehmung 6 horizontal beweglich gelagert und geführt. Der Magnetring des Magnetsystems 4 ist radial über Federn 5 an der Wandung der Ausnehmung 6 abgestützt. Die Federn 5 sind um den Umfang des Magnetrings gleichmässig verteilt angeordnet, wie dies aus der Figur 2 ersichtlich ist.FIG. 1 schematically shows a relay according to the invention, which consists of a housing 2 with a protective tube or reed contact 1 fixed therein and an annular magnet system 4. The magnet system 4, consisting of a permanent magnetic ring, has a substantially larger inner diameter than the diameter of the protective tube or reed contact 1 and is mounted and guided horizontally movably in a horizontal recess 6. The magnetic ring of the magnet system 4 is supported radially by springs 5 on the wall of the recess 6. The springs 5 are arranged evenly distributed around the circumference of the magnetic ring, as can be seen from FIG. 2.

In der Figur 3 ist in Draufsicht eine der Figur 1 ähnliche Ausführungsform mit einem ringinnenseitig über Federn 5 am Schutzrohr der Kotaktanordnung 1 abgestützten ringförmigen Magnetsystem 4 gezeigt, das ebenfalls in einer horizontalen Ausnehmung 6 des Relaisgehäuses 2 geführt ist.FIG. 3 shows a top view of an embodiment similar to FIG. 1 with an annular magnet system 4 supported on the inside of the ring by springs 5 on the protective tube of the contact arrangement 1, which is also guided in a horizontal recess 6 of the relay housing 2.

Die Figur 4 zeigt eine Ausführungsform , die das Magnetsystem 4 in einer zylindrischen koaxial mit der Längsachse der Kontaktanordnung 1 verlaufenden Ausnehmung 6 im Gehäuse 2 zeigt, wobei das ringförmige Magnetsystem 4 über im wesentlichen achsparallel mit der Längsachse der Kontaktanordnung 1 ausgerichtete Federpaare 5 horizontal beweglich an beiden Stirnflächen 7 der zylindrischen Ausnehmung 6 unter Federspannung verankert ist.FIG. 4 shows an embodiment which shows the magnet system 4 in a cylindrical recess 6 in the housing 2 which runs coaxially with the longitudinal axis of the contact arrangement 1, the annular magnet system 4 moving horizontally via spring pairs 5 which are aligned essentially axially parallel to the longitudinal axis of the contact arrangement 1 two end faces 7 of the cylindrical recess 6 is anchored under spring tension.

Die Figur 5 zeigt im Schnitt eine weitere Ausführungsform mit einem am oberen Rand einer Lagerschüssel 8 angeordneten ringförmigen Magnetsystem 4. Die Lagerschüssel 8 ist ebenfalls in einer zylindrischen koaxial mit der Längsachse der Kontaktanordnung verlaufenden Ausnehmung 6 des Gehäuses 2 angeordnet. Die Lagerschüssel 8 verjüngt sich von dem den größten Außendurchmesser bildenden ringförmigen Magnetsystem 4 konisch nach unten und ist am verjüngten Ende ballig ausgebildet. Das verjüngte Ende kann auf der Stirnseite 7 der zylindrischen Ausnehmung direkt auflagern oder durch ein zentrierendes Element in der taumelnden Bewegung geführt sein. Um den oberen Umfang der Lagerschüssel 8 in der Ebene des Magnetsystems 4 ist die Lagerschüssel 8 über Federn 5 änd der Außenwandung des Gehäuses 6 abgestützt. In einer alternativen Ausführungsform kann die Lagerschüssel 8 auch ringinnenseitig über Federn 5 am Schutzrohr des Kontaktsystems 1 abgestützt sein.FIG. 5 shows in section a further embodiment with an annular magnet system 4 arranged on the upper edge of a bearing bowl 8. The bearing bowl 8 is likewise arranged in a cylindrical recess 6 of the housing 2 which runs coaxially with the longitudinal axis of the contact arrangement. The bearing bowl 8 tapers conically downward from the annular magnet system 4, which forms the largest outer diameter, and is spherical at the tapered end. The tapered end can rest directly on the end face 7 of the cylindrical recess or be guided in the tumbling movement by a centering element. Around the upper circumference of the bearing bowl 8 in the plane of the magnet system 4, the bearing bowl 8 is supported by springs 5 and the outer wall of the housing 6. In an alternative embodiment, the bearing bowl 8 can also be supported on the inside of the ring via springs 5 on the protective tube of the contact system 1.

Die Figur 6 zeigt in Draufsicht ein ringförmiges Magnetsystem 4, welches zum Beispiel aus einem aus Kunststoff geformten Ring bestehen kann, in welchem einzelne Permanentmagnete 11, vorzugsweise vier, eingeformt sind.FIG. 6 shows a top view of an annular magnet system 4, which can consist, for example, of a ring made of plastic, in which individual permanent magnets 11, preferably four, are molded.

Ein solcher Ring für das Magnetsystem 4 kann auch aus zwei Eisenringen 12 bestehen, denen zwischengeordnet einzelne Permanentmagnete 11 abständlich um den Umfang verteilt eingefügt sind, wie dies zum Beispiel aus der Figur 7 ersichtlich ist.Such a ring for the magnet system 4 can also consist of two iron rings 12, to which individual permanent magnets 11 are interposed spaced around the circumference, as can be seen, for example, from FIG.

Die in den Figuren 6 und 7 gezeigten und zu diesem beschriebenen Ausführungsformen des ringförmigen Magnetsystems 4 sind selbstverständlich für alle Ausführungsformen des Relais, einschließlich der mit Lagerschüssel 8 (Figur 7) verwendbar.The embodiments of the ring-shaped magnet system 4 shown in FIGS. 6 and 7 and described for this can of course be used for all embodiments of the relay, including those with a storage bowl 8 (FIG. 7).

In der Figur 8 wird schließlich eine weitere Ausführungsform gezeigt, in der das ringförmige Magnetsystem 4 am großen Durchmesser einer Kegelfeder 9 angeordnet ist, die koaxial mit der Kontaktanordnung 1 ausgerichtet, mit ihrem kleinen Durchmesser ein Schutzrohrende der Kontaktanordnung 1 oder einen entsprechenden Lagerzapfen 10 umgreifend, sich an einer Stirnseite 7 der Ausnehmung 6 des Gehäuses 2 abstützt, wobei hier die Ausnehmung 6 ebenfalls koaxial mit der Längsachse der Kontaktanordnung 1 verläuft.Finally, FIG. 8 shows a further embodiment in which the ring-shaped magnet system 4 is arranged on the large diameter of a conical spring 9 which is aligned coaxially with the contact arrangement 1, with its small diameter encompassing a protective tube end of the contact arrangement 1 or a corresponding bearing pin 10, is supported on an end face 7 of the recess 6 of the housing 2, here the Recess 6 also runs coaxially with the longitudinal axis of the contact arrangement 1.

Bevorzugt besteht das Gehäuse 2 des erfindungsgemässen Relais aus einem Kunststoffmaterial, welches glatte Oberflächen aufweist, so daß bei einer gehäuseseitigen Führung oder Anlagerung des Magnetsystems 4 in einigen Ausführungsformen das Magnetsystem 4 zur Kontaktgabe ungehindert beweglich ist. Die Anschlüsse 3 des Kontaktsystems 1 sind auf geeignete Weise aus dem Gehäuse 2 herausgeführt und mit entsprechenden Anschlußfahnen (nicht dargestellt) versehen.The housing 2 of the relay according to the invention preferably consists of a plastic material which has smooth surfaces, so that when the magnet system 4 is guided or attached to the housing, in some embodiments the magnet system 4 can be moved freely to make contact. The connections 3 of the contact system 1 are led out of the housing 2 in a suitable manner and provided with corresponding connection lugs (not shown).

Claims (9)

1. A relay for actuation of a belt tensioner on vehicle safety belts upon striking an obstacle, comprising a protection tube or reed contact system (1) actuated in a switching manner by a magnet system (4), the magnet system being guided in movement relative to the contact system under spring loading characterised in that the protection tube or reed contact system (1) is arranged in a housing (2), with its longitudinal axis aligned perpendicular to the direction of travel and vertical with respect to the horizontal plane of the vehicle and that the annular magnetic system (4) surrounding the contact system (1) is held via springs (5) vertical to the longitudinal axis of the protection tube of the contact system movable substantially horizontally and equidistantly with respect to the contact system (1) in its rest position.
2. A relay according to claim 1, characterised in that the housing (2) for reception and horizontal movable guiding of the annular magnetic system (4) has a recess (6) which widens radially at right angles to the longitudinal axis of the contact system (1) and that the annular magnetic system (4) surrounding the contact system (1) is radially supported around the periphery via springs against the wall of the recess (6) and is held equidistantly with respect to the contact system (1) in its rest position.
3. A relay according to claim 1, characterised in that the housing (2) for reception and horizontally movable location of the annular magnetic system (4) has a recess (6) widening radially at right angles to the longitudinal axis of the contact system (1) and that the annular magnetic system (4) surrounding the contact system (1) is braced on the inner side of the ring radially against the protection tube of the contact system (1), and held equidistantly with respect to the contact system (1) in its rest position, via springs (5).
4. A relay according to claim 1, characterised in that the housing (2) comprises a cylindrical recess (6) extending coaxially with the longitudinal axis of the contact system (1) and that the annular magnetic system (4) is anchored under spring-loading in a horizontally movable manner on both end faces (7) of the cylindrical recess (6) via pairs of springs (5) aligned substantially axially parallel with the longitudinal axis of the contact system and is held equidistantly with respect to the contact system (1) in its rest position.
5. A relay according to claim 1, characterised in that the housing (2) comprises a cylindrical recess (6) extending coaxially with the longitudinal axis of the contact system (1) and that the annular magnetic system (4) is arranged at the upper rim of a bearing bowl narrowing conically downwards in external diameter and terminating spherically at the narrowed end, which is in bearing contact on one end face (7) of the cylindrical recess (6), is braced in the plane of the annular magnetic system (4) against the wall of the recess (6), peripherally via springs (5), and is held equidistantly with respect to the contact system (1) in its rest position.
6. A relay according to claim 5, characterised in that the bearing bowl (8) is braced radially against the protection tube of the contact system on the inner side of the annulus and in the plane of the annular magnetic system (4) via springs (5) and held equidistantly with respect to the contact system (1) in its rest position.
7. A relay according to claim 1, characterised in that the housing (2) has a cylindrical recess (6) extending coaxially with the longitudinal axis of the contact system (1) and that the annular magnetic system (4) is situated on the large diameter of a cone spring (9) which, aligned coaxially with the contact system (1) with its small diameter encircling a protection tube end of the contact system (1) or a corresponding bearing stud (10), bears on one end face (7) of the recess (6) is devised for low-friction guiding of the annular magnetic system (4) within a acting resiliently, transversely to the longitudinal axis of the spring along the other end face (7) of the recess (6), and holding the magnetic system (4) equidistantly with respect to the contact system (1) in its rest position.
8. A relay according to one of claims 1 to 7, characterised in that the annular magnetic system (4) is an annular magnet consisting of a permanently magnetic material.
9. A relay according to one of claims 1 to 8, characterised in that the annular magnetic system (4) comprises preferably four permanent magnets (11) in an equidistant pattern between iron rings (12) forming two magnetic yokes.
EP86112896A 1986-06-10 1986-09-18 Actuating relay for a vehicle seat belt tensioning device Expired - Lifetime EP0248940B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3619474 1986-06-10
DE19863619474 DE3619474A1 (en) 1986-06-10 1986-06-10 RELAY TO ACTUATE A BELT TENSIONER ON MOTOR VEHICLE SAFETY BELTS

Publications (2)

Publication Number Publication Date
EP0248940A1 EP0248940A1 (en) 1987-12-16
EP0248940B1 true EP0248940B1 (en) 1990-10-03

Family

ID=6302680

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86112896A Expired - Lifetime EP0248940B1 (en) 1986-06-10 1986-09-18 Actuating relay for a vehicle seat belt tensioning device

Country Status (6)

Country Link
US (1) US4705922A (en)
EP (1) EP0248940B1 (en)
JP (2) JPS62292552A (en)
KR (1) KR900001153B1 (en)
DE (2) DE3619474A1 (en)
ES (1) ES2002829A6 (en)

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Also Published As

Publication number Publication date
ES2002829A6 (en) 1988-10-01
KR900001153B1 (en) 1990-02-27
DE3619474C2 (en) 1988-03-17
JPS62292552A (en) 1987-12-19
DE3619474A1 (en) 1987-12-17
US4705922A (en) 1987-11-10
EP0248940A1 (en) 1987-12-16
KR880001006A (en) 1988-03-30
DE3674791D1 (en) 1990-11-08
JPH0499163U (en) 1992-08-27

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