DE3900024A1 - Locking device for a mechanical safety belt tensioning device - Google Patents

Locking device for a mechanical safety belt tensioning device

Info

Publication number
DE3900024A1
DE3900024A1 DE19893900024 DE3900024A DE3900024A1 DE 3900024 A1 DE3900024 A1 DE 3900024A1 DE 19893900024 DE19893900024 DE 19893900024 DE 3900024 A DE3900024 A DE 3900024A DE 3900024 A1 DE3900024 A1 DE 3900024A1
Authority
DE
Germany
Prior art keywords
piston
cutting ring
locking device
buckle
tension spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19893900024
Other languages
German (de)
Inventor
Des Erfinders Auf Nennung Verzicht
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
R Schmidt GmbH
Original Assignee
R Schmidt GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by R Schmidt GmbH filed Critical R Schmidt GmbH
Priority to DE19893900024 priority Critical patent/DE3900024A1/en
Publication of DE3900024A1 publication Critical patent/DE3900024A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00Safety belts or body harnesses in vehicles
    • B60R22/18Anchoring devices
    • B60R22/195Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type
    • B60R22/1952Transmission of tensioning power by cable; Return motion locking means therefor
    • B60R22/1953Transmission of tensioning power by cable; Return motion locking means therefor the cable being pulled by mechanical means, e.g. pre-stressed springs, bumper displacement during crash

Landscapes

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

Abstract

In order to produce a simple and effective locking device for mechanical belt tensioning devices in motor vehicles, being composed of a belt lock, a tensioning spring, a catch and a cable connection (steel cable) between the belt lock and the tensioning spring, it is proposed that the locking device be composed of a tubular part (1) with pistons (4, 7) which can be moved axially within it and a cutting ring (8) arranged between them, which tubular part (1) is penetrated by steel cables (2, 6), one of which is fastened to one piston (4) and the other of which is fastened to the second piston (7), penetrates it, penetrates the cutting ring (8) with a degree of play and is also fastened to the other piston (4), the piston (7) which is close to the belt lock being bevelled on its side facing the other piston (4) and the cutting ring (8) which takes the form of a flat disc having the same shape as the bevelled section. <IMAGE>

Description

Mechanische Sicherheitsgurtstrammer haben die Aufgabe, in der Frühphase eines Aufpralles Gurtlose aus dem System mittels Federspannung zu nehmen, um damit die Verletzungsschwere zu mindern.Mechanical seat belt tensioners have that Task, in the early phase of an impact Strapless from the system by means of spring tension to increase the severity of the injury reduce.

Alle Systeme arbeiten derart, daß eine Feder­ kraft durch Verzögerung ausgelöst, den Sicherheitsgurt verspannt, bzw. Gurtlose aus dem System nimmt.All systems work in such a way that a spring force triggered by delay, the Seat belt tensioned or strapless off the system.

Die Millisekunden später nach vorn fliegende Person bringt eine höhere Belastung auf das Gurtschloß, als eine Feder aufbringen kann. Ein Sperrmechanismus verhindert das Zurück­ ziehen der Feder.The milliseconds later flying forward Person puts a higher burden on that Buckle as a spring can apply. A locking mechanism prevents the back pull the feather.

Zweck der Erfindung ist ein einfacher und wirkungsvoller Sperrmechanismus in der Gurtschloß-/Feder-Seilführung integriert. The purpose of the invention is simple and effective locking mechanism in the Belt buckle / spring rope guide integrated.  

Bei mechanischen Gurtstrammern wird, wie technisch üblich, in der Frühphase des Unfallgeschehens das Gurtschloß mittels Federkräften nach unten gerissen. Hierdurch werden Gurtlose aus dem System genommen und damit die Unfallschwere gemindert.With mechanical belt tensioners, how technical usual in the early stages of the accident Belt buckle torn down by spring force. This will remove the strapless from the system and thus reduced the severity of the accident.

Eine mechanische Feder wird hierbei durch Verzögerung ausgelöst und zieht an einem Seil das Gurtschloß nach unten.A mechanical spring is hereby delayed triggered and pulls the belt buckle on a rope below.

Millisekunden später fliegt die, mit mehr Trägheit belastete Person, gegen die Feder und will sie wieder spannen. Ein Sperrmechanismus muß dies verhindern.Milliseconds later, it flies with more inertia burdened person, against the spring and wants it tension again. A locking mechanism must do this prevent.

Erfindungsgemäß sind Strammfeder und Gurtschloß mit Seilen verbunden. Die Seile werden in einem Rohr geführt. Das Rohr ist den Gegebenheiten des Sitzes und der Gurtschloßlage in der Form angepaßt, d.h. entsprechend räumlich angewinkelt.According to the invention, the spring and belt buckle are included Ropes connected. The ropes are in a tube guided. The tube is the conditions of the seat and adapted to the shape of the buckle position, i.e. accordingly angled spatially.

Das Rohr hat im Strammbereich einen zylindrischen Durchmesser und ist auf Strammlänge (ca. 100 mm) gerade. Das Seil der Strammfeder ist mit einem zylindrischen Stahlkolben kraftschlüssig verbunden. Die sicherheitsgurtschloßseitigen beiden Seile sind mit diesem zylindrischen Stahlkolben ebenso kraftschlüssig verbunden. In einem Abstand ist ein zweiter in Richtung des ersten Kolbens ab­ geschrägter Kolben ebenfalls mit den Seilen des Sicherheitsgurtschlosses kraftschlüssig verbunden.The tube has a cylindrical shape in the tightening area Diameter and is at string length (approx. 100 mm)  just. The rope of the tension spring is with one cylindrical steel piston non-positively connected. The two ropes on the seat belt buckle side are the same with this cylindrical steel piston non-positively connected. At a distance is one second towards the first piston inclined piston also with the ropes of the Seat belt buckle non-positively connected.

Zwischen beiden Kolben ist ein loser "Schneidring" kippbar gelagert mit Löchern für den Seildurchgang des Gurtschlosses.There is a loose "cutting ring" between the two pistons tiltable with holes for the rope passage of the buckle.

Beim Bewegen des Systems durch die Zugfeder wird der "Schneidring" durch den abgeschrägten Zylinder derart gekippt, daß er nicht sperrt.When moving the system through the tension spring the "cutting ring" through the beveled cylinder tilted so that it does not lock.

Beim Bewegen des Systems durch das Sicherheits­ gurtschloß (die kinetische Energie der gesicherten Person ist stärker als die Feder) kippt der Zylinder mit geradem Kopfende den Schneidring in Funktionsposition, d.h. er verkeilt sich mit dem Rohr. When moving the system through security buckle (the kinetic energy of the secured Person is stronger than the spring) tilts Cylinder with straight head end the cutting ring in Functional position, i.e. he wedges with the Pipe.  

Ein Ausführungsbeispiel ist in der Zeichnung dargestellt und im folgenden näher beschrieben.An embodiment is in the drawing shown and described in more detail below.

Erfindungsgemäß besteht der Sperrmechanismus aus einem in der Zeichnung teils aufgebrochenen Führungsrohr 1. Das Seil 2 einer Strammfeder 3 ist mit einem zylindrischen Stahlkolben 4 kraft­ schlüssig verbunden. Die sicherheitsgurtschloß­ seitigen beiden Seile 6 sind mit diesem zylindrischen Stahlkolben 4 ebenso kraftschlüssig verbunden. In einem Abstand ist ein zweiter Kolben 7 in Richtung des ersten abgeschrägt und ebenfalls mit den Seilen 6 des Gurtschlosses 5 kraftschlüssig verbunden.According to the invention, the locking mechanism consists of a guide tube 1 which is partially broken open in the drawing. The rope 2 of a tension spring 3 is positively connected to a cylindrical steel piston 4 . The seat belt buckle-side two ropes 6 are also non-positively connected to this cylindrical steel piston 4 . At a distance, a second piston 7 is chamfered in the direction of the first and is also non-positively connected to the ropes 6 of the belt buckle 5 .

Zwischen beiden Kolben ist ein Schneidring 8 kippbar gelagert mit Löchern 9 für den Seil­ durchgang 6 des Gurtschlosses 5.A cutting ring 8 is tiltably supported between the two pistons with holes 9 for the cable passage 6 of the belt buckle 5 .

Beim Bewegen des Systems durch die Zugfeder 3 wird der Schneidring 8 durch den abgeschrägten Zylinder 7 derart gekippt, daß er nicht sperrt. When the system is moved by the tension spring 3 , the cutting ring 8 is tilted by the beveled cylinder 7 in such a way that it does not lock.

Beim Bewegen des Systems durch das Sicherheits­ gurtschloß 5 beziehungsweise darauf einwirkende Zugkräfte kippt der Zylinder 4 mit seinem geraden Kopfende den Schneidring 8 in Funktions­ position, d.h. er verklemmt sich mit dem Rohr.When moving the system through the safety belt buckle 5 or tensile forces acting on it, the cylinder 4 tilts the cutting ring 8 into its functional position with its straight head end, ie it jams with the tube.

Claims (4)

1. Sperrvorrichtung für mechanische Gurtstrammer in Kraftfahrzeugen, bestehend aus einem Gurtschloß, einer im Falle einer unfallbedingten Abbremsung des Kraftfahrzeuges auslösenden Strammfeder, einer Sperre, die das Zurückziehen der aus­ gelösten Strammfeder verhindert, sowie einer Seilverbindung (Stahlseil) zwischen Gurtschloß und Spannfeder, dadurch gekennzeichnet, daß die Sperrvorrichtung durch ein Rohrstück (1), inbesondere mit kreisrundem Querschnitt, mit darin axial beweglichen Kolben (4, 7) und dazwischen angeordneten Schneidring (8) besteht, welches Rohrstück (1) von Stahlseilen (2, 6) durchgriffen ist, deren eines am einen Kolben (4) befestigt ist, der am der Stramm­ feder (3) zugewandten Rohrteil angeordnet ist und deren anderes an dem zweiten vom ersten Kolben (4) beabstandeten Kolben (7), der am dem Gurtschloß (5) zugewandten Rohrteil angeordnet ist, befestigt ist, diesen durch­ greift, den Schneidring (8) mit Spiel durch­ greift und am anderen Kolben (4) ebenfalls befestigt ist, wobei der gurtschloßnahe Kolben (7) an seiner dem anderen Kolben (4) zugewandten Seite abgeschrägt ist und der als flache Scheibe ausgebildete Schneidring (8) mindestens etwa die gleiche etwa elliptische Form und Abmessung aufweist, die durch die Abschrägung des Kolbens (7) gebildet ist.1. Locking device for mechanical belt tensioners in motor vehicles, consisting of a belt buckle, a tension spring triggering in the event of an accident-related braking of the motor vehicle, a lock that prevents the retraction of the released tension spring, and a rope connection (steel rope) between the buckle and tension spring, characterized in that the blocking device by a pipe piece (1), in particular with a circular cross-section, with therein axially movable piston (4, 7) and arranged between the cutting ring (8), is which pipe piece is penetrated (1) of steel cables (2, 6), one of which is attached to a piston (4) which is arranged on the tightening spring (3) facing tubular member and the other on the second spaced from the first piston (4) piston (7), which faces on the buckle (5) tube portion is arranged, is attached, this engages through, the cutting ring ( 8 ) with play engages and on the other Piston ( 4 ) is also fastened, the piston ( 7 ) near the belt buckle being chamfered on its side facing the other piston ( 4 ) and the cutting ring ( 8 ) designed as a flat disc having at least approximately the same approximately elliptical shape and dimension as a result of the bevel of the piston ( 7 ) is formed. 2. Sperrvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Kolben (4, 7) kraft­ schlüssig mit den Seilen (2, 6) verbunden sind. 2. Locking device according to claim 1, characterized in that the pistons ( 4 , 7 ) are positively connected to the ropes ( 2 , 6 ). 3. Sperrvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Schneidring (8) in Richtung seiner längeren Erstreckung gerichtete längliche Seildurchgriffslöcher (9) aufweist.3. Locking device according to claim 1 or 2, characterized in that the cutting ring ( 8 ) in the direction of its longer extension has elongated rope penetration holes ( 9 ). 4. Sperrvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Rohrstück (1) gestellfest gehaltert ist.4. Locking device according to one of claims 1 to 3, characterized in that the tube piece ( 1 ) is fixed to the frame.
DE19893900024 1989-01-02 1989-01-02 Locking device for a mechanical safety belt tensioning device Withdrawn DE3900024A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19893900024 DE3900024A1 (en) 1989-01-02 1989-01-02 Locking device for a mechanical safety belt tensioning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19893900024 DE3900024A1 (en) 1989-01-02 1989-01-02 Locking device for a mechanical safety belt tensioning device

Publications (1)

Publication Number Publication Date
DE3900024A1 true DE3900024A1 (en) 1990-07-05

Family

ID=6371517

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19893900024 Withdrawn DE3900024A1 (en) 1989-01-02 1989-01-02 Locking device for a mechanical safety belt tensioning device

Country Status (1)

Country Link
DE (1) DE3900024A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0557864A1 (en) * 1992-02-27 1993-09-01 TRW Occupant Restraint Systems GmbH Energy convector in a vehicle occupant restraint system
US5350194A (en) * 1992-03-05 1994-09-27 Trw Repa Gmbh Linear drive for vehicle restraining systems

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0557864A1 (en) * 1992-02-27 1993-09-01 TRW Occupant Restraint Systems GmbH Energy convector in a vehicle occupant restraint system
US5480190A (en) * 1992-02-27 1996-01-02 Trw Repa Gmbh Energy converter in a restraining system for vehicle occupants
US5350194A (en) * 1992-03-05 1994-09-27 Trw Repa Gmbh Linear drive for vehicle restraining systems

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