WO2005037616A1 - Self-locking belt retractor - Google Patents
Self-locking belt retractor Download PDFInfo
- Publication number
- WO2005037616A1 WO2005037616A1 PCT/EP2004/010553 EP2004010553W WO2005037616A1 WO 2005037616 A1 WO2005037616 A1 WO 2005037616A1 EP 2004010553 W EP2004010553 W EP 2004010553W WO 2005037616 A1 WO2005037616 A1 WO 2005037616A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- belt
- component
- belt shaft
- profile head
- recess
- 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.)
- Ceased
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/34—Belt retractors, e.g. reels
- B60R22/341—Belt retractors, e.g. reels comprising energy-absorbing means
- B60R22/3413—Belt retractors, e.g. reels comprising energy-absorbing means operating between belt reel and retractor frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/28—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices
- B60R2022/286—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices using deformation of material
- B60R2022/287—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices using deformation of material of torsion rods or tubes
Definitions
- the invention relates to a self-locking belt retractor with a blocking device for the belt shaft that can be controlled in a vehicle-sensitive and / or belt-sensitive manner, with a profile head as a carrier of a locking member that is movably arranged to lock the belt shaft with the housing, and with a force limiting device in the form of a one end rotatably fixed to the belt shaft and at its other end, torsion bar connected in a rotationally fixed manner to the profile head.
- a belt retractor with the aforementioned features is described in DE 196 81 341 Cl.
- two shear pins are arranged on the front side of the belt shaft facing the profile head, which engage in corresponding bores in the profile head and during assembly of the Belt retractors are riveted to the profile head, so that the belt shaft and profile head are held together as an assembly during the further assembly processes.
- the known belt retractor has the disadvantage that the production of the shear pin connection is complex because the shear pins engaging in the recesses of the profile head are riveted to it, with correspondingly high demands being made on the accuracy of fit of the connection.
- the invention is therefore based on the object to improve the connection between the belt shaft and profile head in relation to their assembly in a self-locking belt retractor of the type mentioned.
- the basic idea of the invention provides that for connecting the belt shaft and the profile head, at least one axially projecting projection arranged on one of the interconnected components engages in at least one recess made on the end face of the other component and in the overlap area of the projection and A recess is provided on both sides of a longitudinal center plane of the belt shaft and, parallel to it, the securing elements that surround the recess of one component and secure the attachment of the other component are provided.
- the invention is associated with the advantage of a process-reliable assembly, because after the belt shaft and profile head have been put together, only the securing elements arranged with a tangential course are to be inserted into the bores respectively arranged in the overlap area of the shoulder and recess.
- the invention provides that the securing elements are designed as shear pins which are inserted into bores arranged in the ring of one component and penetrate the shoulder of the other component in assigned bores.
- the principle of a shear pin connection known from the generic state of the art is retained, but with a considerably simplified assembly of the assembly consisting of the belt shaft and profile head.
- the securing elements are designed as retaining pins which are inserted into bores arranged in the ring of the one component and engage in grooves formed on the circumference of the shoulder of the other component.
- this embodiment in addition to the process-reliable assembly by simply inserting the retaining pins, has the advantage that the force peak which arises during a shear pin connection is eliminated when the torsion bar becomes effective and the force limiting system responds more smoothly.
- connection via the retaining pins lying in the groove still transmits axial forces even during the force limitation, so that the elongation of the torsion bar that occurs when it is twisted due to plastic deformation has no adverse effects with regard to the assignment of the profile head and belt shaft to one another.
- a circumferential groove is arranged on the circumference of the attachment and the retaining pins are arranged in a tangential course to the deepest of the groove.
- 1 is an assembly consisting of belt shaft and profile head as part of a self-locking belt retractor
- FIG. 2 shows a schematic side view of a connection between the belt shaft and the profile head which is carried out by means of a shear pin arrangement
- Fig. 3 shows the subject of Figure 2 in another embodiment with a retaining pin connection.
- the subject of the invention is a self-locking belt retractor
- the number 10 in FIG Belt shaft and designated 11 a profile head to be coupled to the belt shaft.
- Belt shaft 10 and profile head 11 are coupled to one another via a torsion bar 12, the torsion bar 12 having its left end in FIG. 1 being connected in a rotationally fixed manner to the belt shaft 10 and having its right end in FIG. 1 being connected in a rotationally fixed manner to the profile head 11, for which purpose the profile head 1 1 has a receiving opening 13 corresponding to the shape of the end of the torsion bar 12.
- the profile head 11 extends with an axial extension 14 extending from it and forming the receiving opening 13 into a recess 15 (FIGS. 2 and 3) formed in the end of the belt shaft 10.
- FIG. 1 The attachment of the shoulder 14 of the profile head 11 in the associated recess 15 of the belt shaft 10 is shown in a first embodiment in FIG.
- bores 17 for receiving shear pins 18 which can be inserted therein are arranged on both sides of an imaginary long center plane of the belt shaft 10 in the ring 16 surrounding the recess 15.
- the projection 14 of the profile head 1 1 has bores 19 which are arranged such that in the assigned position of the profile head 11 with the projection 14 inserted into the recess 15 of the belt shaft 10, the bores 19 are aligned with the bores 17 of the belt shaft 10, so that the shear pins 18 inserted into the bores 17 pass through the shoulder 14 in the bores 19.
- a bearing pin 22 is provided on the side opposite the belt shaft 10, which is used to support the assembly consisting of the belt shaft 10 and profile head 11 in the U-shaped housing of the belt retractor (not shown here).
- the shear pins 18 define the response threshold for the effectiveness of the torsion bar 12, as described in detail in the generic DE 196 81 341 Cl.
- the exemplary embodiment shown in FIG. 3 differs from the previously described exemplary embodiment in that instead of the shear pins, simple retaining pins 21 are now provided, for the reception of which the attachment 14 is provided with a circumferential groove 20. Due to the positive connection of the torsion bar 12 with the belt shaft 10 on the one hand and the profile head 11 on the other hand, the components 10, 11 each rotate together in normal operation of the belt retractor. If, due to the blocking of the profile head 11 and a belt tensile force still acting on the belt shaft 10 in the belt pull-out direction, a corresponding force is exerted on the torsion bar 12, the torsion bar 12 yields to the acting torque, so that the relative rotation of the belt shaft 10, which has already been described, is blocked Profile head 1 1 occurs.
- the assembly can be simplified by the fact that the holding pins 21 can already be inserted into the associated bores 17 of the ring 16 of the belt shaft 10, so that the profile head 11 can be snapped with its extension 14 into the recess 15 of the belt shaft 10 during assembly by the retaining pins 21 giving way slightly and snapping into the groove 20 of the extension 14.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
Description
Selbstsperrender Gurtaufroller Self-locking belt retractor
B e s c h r e i b u n gDescription
Die Erfindung betrifft einen selbstsperrenden Gurtaufroller mit einer fahrzeugsensitiv und/oder gurtbandsensitiv ansteuerbaren Blockiervorrichtung für die Gurtwelle, mit einem Profilkopf als Träger eines zur Verriegelung der Gurtwelle mit dem Gehäuse beweglich angeordneten Sperrgliedes und mit einer Kraftbegrenzungseinrichtung in Form eines an seinem einen Ende drehfest mit der Gurtwelle und an seinem anderen Ende drehfest mit dem Profilkopf verbundenen Torsionsstabes.The invention relates to a self-locking belt retractor with a blocking device for the belt shaft that can be controlled in a vehicle-sensitive and / or belt-sensitive manner, with a profile head as a carrier of a locking member that is movably arranged to lock the belt shaft with the housing, and with a force limiting device in the form of a one end rotatably fixed to the belt shaft and at its other end, torsion bar connected in a rotationally fixed manner to the profile head.
Ein Gurtaufroller mit den vorgenannten Merkmalen ist in der DE 196 81 341 Cl beschrieben. Soweit es erforderlich ist, die Gurtwelle und den Profilkopf bei normalen Auf- und Abwickelbewegungen wie auch bei normalen Gurtblockierungen aneinander zu koppeln, sind an der dem Profilkopf zugewandten Stirnseite der Gurtwelle zwei Scherstifte angeordnet, die in entsprechende Bohrungen im Profilkopf eingreifen und bei der Montage des Gurtaufrollers mit dem Profilkopf vernietet werden, so dass Gurtwelle und Profilkopf während der weiteren Montagevorgänge als Baugruppe zusammengehalten sind. Kommt es nach einer über das gurtbandsensitive bzw. fahrzeugsensitive Steuersystem eingeleiteten Blockierung der Gurtwelle beispielsweise durch den bei einem Unfall in den Gurt fallenden Insassen zu einer entsprechend großen Zugkraft am Gurt in Gurtauszugsrichtung, so brechen die Scherstifte ab, und die Gurtwelle ist danach gegenüber dem blockiexteji. Profilkopf in Gurtauszugsrichtung relativ drehbar. Diese Relativdrehung wird durch den zwischen Gurtwelle und Profilkopf eingeschalteten Torsionsstab aufgenommen, wobei aufgrund der Formänderungsarbeit des Torsionsstabes die gewünschte Kraftbegrenzung erreicht wird.A belt retractor with the aforementioned features is described in DE 196 81 341 Cl. As far as it is necessary to couple the belt shaft and the profile head to each other during normal winding and unwinding movements as well as normal belt blocking, two shear pins are arranged on the front side of the belt shaft facing the profile head, which engage in corresponding bores in the profile head and during assembly of the Belt retractors are riveted to the profile head, so that the belt shaft and profile head are held together as an assembly during the further assembly processes. It comes after Blocking of the belt shaft initiated via the belt strap-sensitive or vehicle-sensitive control system, for example by the occupant falling into the belt in the event of an accident, to a correspondingly great tensile force on the belt in the belt pull-out direction, the shear pins break off and the belt shaft is then opposite the blockiexteji. Profile head can be rotated relatively in the belt extension direction. This relative rotation is absorbed by the torsion bar switched on between the belt shaft and the profile head, the desired force limitation being achieved due to the deformation work of the torsion bar.
Mit dem bekannten Gurtaufroller ist der Nachteil verbunden, dass die Herstellung der Scherstiftverbindung aufwendig ist, weil die in die Ausnehmungen des Profilkopfes eingreifenden Scherstifte mit diesem vernietet werden, wobei an die Passgenauigkeit der Verbindung entsprechend hohe Anforderungen zu stellen sind.The known belt retractor has the disadvantage that the production of the shear pin connection is complex because the shear pins engaging in the recesses of the profile head are riveted to it, with correspondingly high demands being made on the accuracy of fit of the connection.
Der Erfindung liegt daher die Aufgabe zugrunde, bei einem selbstsperrenden Gurtaufroller der eingangs genannten Art die Verbindung zwischen Gurtwelle und Profilkopf in Bezug auf deren Montage zu verbessern.The invention is therefore based on the object to improve the connection between the belt shaft and profile head in relation to their assembly in a self-locking belt retractor of the type mentioned.
Die Lösung dieser Aufgabe ergibt sich einschließlich vorteilhafter Ausgestaltungen und Weiterbildungen der Erfindung aus dem Inhalt der Patentansprüche, welche dieser Beschreibung nachgestellt sind.This object is achieved, including advantageous refinements and developments of the invention, from the content of the patent claims, which follow this description.
Die Erfindung sieht in ihrem Grundgedanken vor, dass zur Verbindung von Gurtwelle und Profilkopf wenigstens ein an dem einen der miteinander verbundene Bauteile angeordneter, axial abstehender Ansatz in wenigstens eine stirnseitig an dem anderen Bauteil eingebrachte Ausnehmung eingreift und in dem Überlappungsbereich von Ansatz und Ausnehmung beidseitig einer Langsmittenebene der Gurtwelle und parallel dazu den die Ausnehmung umgebenden Kranz des einen Bauteils durchgreifende und den Ansatz des anderen Bauteils festlegende Sicherungselemente vorgesehen sind. Mit der Erfindung ist der Vorteil einer prozesssicheren Montage verbunden, weil nach dem Zusammenstecken von Gurtwelle und Profilkopf lediglich die mit einem tangentialen Verlauf angeordneten Sicherungselemente in die dafür im Überlappungsbereich von Ansatz und Ausnehmung jeweils angeordneten Bohrungen einzustecken sind.The basic idea of the invention provides that for connecting the belt shaft and the profile head, at least one axially projecting projection arranged on one of the interconnected components engages in at least one recess made on the end face of the other component and in the overlap area of the projection and A recess is provided on both sides of a longitudinal center plane of the belt shaft and, parallel to it, the securing elements that surround the recess of one component and secure the attachment of the other component are provided. The invention is associated with the advantage of a process-reliable assembly, because after the belt shaft and profile head have been put together, only the securing elements arranged with a tangential course are to be inserted into the bores respectively arranged in the overlap area of the shoulder and recess.
Die Erfindung sieht in einer ersten Ausführungsform vor, dass die Sicherungselemente als in in dem Kranz des einen Bauteils angeordneten Bohrungen eingesteckte und den Ansatz des anderen Bauteils in zugeordneten Bohrungen durchgreifende Scherstifte ausgebildet sind. Bei diesem Ausführungsbeispiel wird das aus dem gattungsbildenden Stand der Technik bekannte Prinzip einer Scherstiftverbindung beibehalten, allerdings mit einer wesentlich vereinfachten Montage der aus Gurtwelle und Profilkopf bestehenden Baugruppe.In a first embodiment, the invention provides that the securing elements are designed as shear pins which are inserted into bores arranged in the ring of one component and penetrate the shoulder of the other component in assigned bores. In this embodiment, the principle of a shear pin connection known from the generic state of the art is retained, but with a considerably simplified assembly of the assembly consisting of the belt shaft and profile head.
In einer weiteren Ausführungsform der Erfindung ist vorgesehen, dass die Sicherungselemente als in in dem Kranz des einen Bauteils angeordneten Bohrungen eingesteckte und in auf dem Umfang des Ansatzes des anderen Bauteils ausgebildeten Nuten eingreifende Haltestifte ausgebildet sind. Im Vergleich mit einer Ausbildung der Sicherungselemente als Scherstifte ist mit dieser Ausführungsform neben der prozesssicheren Montage mittels eines lediglich notwendigen Einsteckens der Haltestifte der Vorteil verbunden, dass die bei einer Scherstiftverbindung entstehende Kraftspitze bei dem Wirksamwerden des Torsionsstabes entfällt und das Kraftbegrenzungssystem weicher anspricht. Ein weiterer Vorteil dieser Ausführungsform besteht darin, dass die Verbindung über die in der Nut liegenden Haltestifte auch während der Kraftbegrenzung noch Axialkräfte überträgt, so dass die bei seiner Verdrillung aufgrund plastischer Verformung eintretende Längung des Torsionsstabes keine nachteiligen Auswirkungen hinsichtlich der Zuordnung von Profilkopf und Gurtwelle zueinander hat.In a further embodiment of the invention it is provided that the securing elements are designed as retaining pins which are inserted into bores arranged in the ring of the one component and engage in grooves formed on the circumference of the shoulder of the other component. In comparison to a design of the securing elements as shear pins, this embodiment, in addition to the process-reliable assembly by simply inserting the retaining pins, has the advantage that the force peak which arises during a shear pin connection is eliminated when the torsion bar becomes effective and the force limiting system responds more smoothly. Another advantage of this embodiment is that that the connection via the retaining pins lying in the groove still transmits axial forces even during the force limitation, so that the elongation of the torsion bar that occurs when it is twisted due to plastic deformation has no adverse effects with regard to the assignment of the profile head and belt shaft to one another.
Insbesondere ist nach einem Ausführungsbeispiel der Erfindung vorgesehen, dass auf dem Umfang des Ansatzes eine umlaufende Nut angeordnet ist und die Haltestifte in einen tangentialen Verlauf zum Tiefsten der Nut angeordnet sind.In particular, according to one embodiment of the invention, it is provided that a circumferential groove is arranged on the circumference of the attachment and the retaining pins are arranged in a tangential course to the deepest of the groove.
In der Zeichnung sind Ausführungsbeispiele wiedergegeben, welche nachstehend beschrieben sind. Es zeigen:Exemplary embodiments are shown in the drawing and are described below. Show it:
Fig. 1 eine aus Gurtwelle und Profilkopf bestehende Baugruppe als Bestandteil eines selbstsperrenden Gurtaufrollers in einer Gesamtdarstellung,1 is an assembly consisting of belt shaft and profile head as part of a self-locking belt retractor,
Fig. 2 eine mittels Scherstiftanordnung ausgeführte Verbindung von Gurtwelle und Profilkopf in einer schematischen Seitenansicht,2 shows a schematic side view of a connection between the belt shaft and the profile head which is carried out by means of a shear pin arrangement,
Fig. 3 den Gegenstand der Figur 2 in einer anderen Ausführungsform mit einer Haltestiftverbindung.Fig. 3 shows the subject of Figure 2 in another embodiment with a retaining pin connection.
Soweit Gegenstand der Erfindung ein selbstsperrender Gurtaufroller ist, findet sich eine Gesamtdarstellung des Gegenstandes in der zur Bildung der Gattung herangezogenen DE 196 81 341 C l . Soweit zum Verständnis der vorliegenden Erfindung lediglich die aus Gurtwelle und Profilkopf bestehende Baugruppe erforderlich ist, ist in Figur 1 mit 10 die Gurtwelle und mit 11 ein an die Gurtwelle zu koppelnder Profilkopf bezeichnet. Gurtwelle 10 und Profilkopf 1 1 sind über einen Torsionsstab 12 aneinandergekoppelt, wobei der Torsionsstab 12 mit seinem in Figur 1 linken Ende drehfest mit der Gurtwelle 10 und mit seinem in Figur 1 rechten Ende drehfest mit dem Profilkopf 1 1 verbunden ist, wozu der Profilkopf 1 1 eine dem Ende des Torsionsstabes 12 formentsprechende Aufnahmeöffnung 13 aufweist. Der Profilkopf 1 1 reicht mit einem von ihm ausgehenden und die Aufnahmeöffnung 13 ausbildenden axialen Ansatz 14 in eine stirnseitig in der Gurtwelle 10 ausgebildete Ausnehmung 15 (Figuren 2 und 3) hinein.As far as the subject of the invention is a self-locking belt retractor, there is an overall representation of the subject in DE 196 81 341 C1 used to form the genus. To the extent that only the assembly consisting of belt shaft and profile head is required for understanding the present invention, the number 10 in FIG Belt shaft and designated 11 a profile head to be coupled to the belt shaft. Belt shaft 10 and profile head 11 are coupled to one another via a torsion bar 12, the torsion bar 12 having its left end in FIG. 1 being connected in a rotationally fixed manner to the belt shaft 10 and having its right end in FIG. 1 being connected in a rotationally fixed manner to the profile head 11, for which purpose the profile head 1 1 has a receiving opening 13 corresponding to the shape of the end of the torsion bar 12. The profile head 11 extends with an axial extension 14 extending from it and forming the receiving opening 13 into a recess 15 (FIGS. 2 and 3) formed in the end of the belt shaft 10.
Die Festlegung des Ansatzes 14 des Profilkopfes 1 1 in der zugehörigen Ausnehmung 15 der Gurtwelle 10 ist in einem ersten Ausführungsbeispiel in Figur 2 dargestellt. Hierzu sind zu beiden Seiten einer gedachten Langsmittenebene der Gurtwelle 10 in dem die Ausnehmung 15 umgebenden Kranz 16 Bohrungen 17 zur Aufnahme von darin einsteckbaren Scherstiften 18 angeordnet. Entsprechend weist der Ansatz 14 des Profilkopfes 1 1 Bohrungen 19 auf, die derart angeordnet sind, dass in der zugeordneten Lage des Profilkopfes 1 1 bei in die Ausnehmung 15 der Gurtwelle 10 eingestecktem Ansatz 14 die Bohrungen 19 mit den Bohrungen 17 der Gurtwelle 10 fluchten, so dass die in die Bohrungen 17 eingesteckten Scherstifte 18 den Ansatz 14 in den Bohrungen 19 durchgreifen. An dem Profilkopf 1 1 ist an dessen der Gurtwelle 10 gegenüberliegenden Seite ein Lagerstift 22 vorgesehen, der der Lagerung der aus Gurtwelle 10 und Profilkopf 1 1 bestehenden Baugruppe in dem hier nicht weiter dargestellten U-förmigen Gehäuse des Gurtaufrollers dient.The attachment of the shoulder 14 of the profile head 11 in the associated recess 15 of the belt shaft 10 is shown in a first embodiment in FIG. For this purpose, bores 17 for receiving shear pins 18 which can be inserted therein are arranged on both sides of an imaginary long center plane of the belt shaft 10 in the ring 16 surrounding the recess 15. Correspondingly, the projection 14 of the profile head 1 1 has bores 19 which are arranged such that in the assigned position of the profile head 11 with the projection 14 inserted into the recess 15 of the belt shaft 10, the bores 19 are aligned with the bores 17 of the belt shaft 10, so that the shear pins 18 inserted into the bores 17 pass through the shoulder 14 in the bores 19. On the profile head 11 a bearing pin 22 is provided on the side opposite the belt shaft 10, which is used to support the assembly consisting of the belt shaft 10 and profile head 11 in the U-shaped housing of the belt retractor (not shown here).
Soweit bei der Montage der aus Gurtwelle 10 und Profilkopf 1 1 bestehenden Baueinheit lediglich die Scherstifte 18 in die in einer Flucht liegenden Bohrungen 17 und 19 einzustecken sind, legen die Scherstifte 18 die Ansprechschwelle für das Wirksamwerden des Torsionsstabes 12 fest, wie in der gattungsbildenden DE 196 81 341 Cl im einzelnen beschrieben.As far as the assembly of the belt shaft 10 and profile head 1 1 consists of only the shear pins 18 in alignment lying bores 17 and 19 are to be inserted, the shear pins 18 define the response threshold for the effectiveness of the torsion bar 12, as described in detail in the generic DE 196 81 341 Cl.
Das in Figur 3 dargestellte Ausführungsbeispiel unterscheidet sich von dem zuvor beschriebenen Ausführungsbeispiel dadurch, dass an Stelle der Scherstifte nun einfache Haltestifte 21 vorgesehen sind, zu deren Aufnahme der Ansatz 14 mit einer umlaufenden Nut 20 versehen ist. Aufgrund der Formschlussverbindung des Torsionsstabes 12 mit der Gurtwelle 10 einerseits und dem Profilkopf 11 andererseits drehen sich in Normalbetrieb des Gurtaufrollers die Bauteile 10, 1 1 jeweils gemeinsam. Kommt es aufgrund der Blockierung des Profilkopfes 11 und einer weiterhin an der Gurtwelle 10 angreifenden Gurtzugkraft in Gurtauszugsrichtung zu einer entsprechenden Krafteinwirkung auf den Torsionsstab 12, so gibt der Torsionsstab 12 dem einwirkenden Drehmoment nach, so dass die bereits beschriebene Relativdrehung der Gurtwelle 10 zu dem blockierten Profilkopf 1 1 eintritt. Bei dem in Figur 3 dargestellten Ausführungsbeispiel sind keine Scherkräfte vor dem Wirksamwerden des Torsionsstabes zu überwinden, so dass ein weicheres Ansprechen der Kraftbegrenzung gewährleistet ist. Auch während der Kraftbegrenzung durch die Verdrillung des Torsionsstabes 12 sorgen die in der Nut 20 des Profilkopfansatzes 14 liegenden Haltestifte 21 dafür, dass Profilkopf 11 und Gurtwelle 10 axial unverrückbar gegeneinander festgelegt sind, so dass die mit der Verdrillung des Torsionsstabes 12 einhergehende Längung des Torsionsstabes Gurtwelle 10 und Profilkopf 1 1 in axialer Richtung nicht auseinander treiben kann. Ein weiterer Vorteil besteht darin, dass bei einer Ausführung der Haltestifte 21 mit einer gewissen Elastizität die Montage dadurch zu vereinfachen ist, dass die Haltestifte 21 in die zugeordneten Bohrungen 17 des Kranzes 16 der Gurtwelle 10 bereits eingesteckt sein können, so dass der Profilkopf 1 1 mit seinem Ansatz 14 in die Ausnehmung 15 der Gurtwelle 10 bei der Montage eingerastet werden kann, indem die Haltestifte 21 leicht nachgeben und in die Nut 20 des Ansatzes 14 einrasten.The exemplary embodiment shown in FIG. 3 differs from the previously described exemplary embodiment in that instead of the shear pins, simple retaining pins 21 are now provided, for the reception of which the attachment 14 is provided with a circumferential groove 20. Due to the positive connection of the torsion bar 12 with the belt shaft 10 on the one hand and the profile head 11 on the other hand, the components 10, 11 each rotate together in normal operation of the belt retractor. If, due to the blocking of the profile head 11 and a belt tensile force still acting on the belt shaft 10 in the belt pull-out direction, a corresponding force is exerted on the torsion bar 12, the torsion bar 12 yields to the acting torque, so that the relative rotation of the belt shaft 10, which has already been described, is blocked Profile head 1 1 occurs. In the embodiment shown in FIG. 3, no shear forces have to be overcome before the torsion bar becomes effective, so that a softer response of the force limitation is ensured. Even during the force limitation due to the twisting of the torsion bar 12, the retaining pins 21 located in the groove 20 of the profile head attachment 14 ensure that the profile head 11 and the belt shaft 10 are fixed axially immovably relative to one another, so that the elongation of the torsion bar belt shaft associated with the twisting of the torsion bar 12 10 and profile head 1 1 cannot drift apart in the axial direction. Another advantage is that when the holding pins 21 are designed with a certain elasticity, the assembly can be simplified by the fact that the holding pins 21 can already be inserted into the associated bores 17 of the ring 16 of the belt shaft 10, so that the profile head 11 can be snapped with its extension 14 into the recess 15 of the belt shaft 10 during assembly by the retaining pins 21 giving way slightly and snapping into the groove 20 of the extension 14.
Die in der vorstehenden Beschreibung, den Patentansprüchen, der Zusammenfassung und der Zeichnung offenbarten Merkmale des Gegenstandes dieser Unterlagen können einzeln als auch in beliebigen Kombinationen untereinander für die Verwirklichung der Erfindung in ihren verschiedenen Ausführungsformen wesentlich sein. The features of the subject matter of these documents disclosed in the above description, the patent claims, the abstract and the drawing can be essential individually or in any combination with one another for realizing the invention in its various embodiments.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2003148853 DE10348853A1 (en) | 2003-10-16 | 2003-10-16 | Self-locking belt retractor |
| DE10348853.7 | 2003-10-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005037616A1 true WO2005037616A1 (en) | 2005-04-28 |
Family
ID=34442146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2004/010553 Ceased WO2005037616A1 (en) | 2003-10-16 | 2004-09-21 | Self-locking belt retractor |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE10348853A1 (en) |
| WO (1) | WO2005037616A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8033494B2 (en) | 2008-05-09 | 2011-10-11 | Takata-Petri Ag | Belt retractor with axial securing and method for the production thereof |
| CN104742856A (en) * | 2013-12-30 | 2015-07-01 | 常州博万达汽车安全设备有限公司 | Safety belt winder |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005051891B3 (en) * | 2005-10-29 | 2007-03-22 | Autoliv Development Ab | Belt rolling-in device for safety belt of motor vehicle has locking element in form of ring round impact point between belt shaft and shaped head |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0888939A1 (en) * | 1997-07-04 | 1999-01-07 | Alliedsignal Limited | Retractor |
| DE19681341C1 (en) * | 1995-04-14 | 2002-08-01 | Autoliv Dev | Belt retractor with damped force limiter |
| WO2003078217A1 (en) * | 2002-03-08 | 2003-09-25 | Breed Automotive Technology, Inc. | Energy absorbing seat belt retractor |
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2003
- 2003-10-16 DE DE2003148853 patent/DE10348853A1/en not_active Withdrawn
-
2004
- 2004-09-21 WO PCT/EP2004/010553 patent/WO2005037616A1/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19681341C1 (en) * | 1995-04-14 | 2002-08-01 | Autoliv Dev | Belt retractor with damped force limiter |
| EP0888939A1 (en) * | 1997-07-04 | 1999-01-07 | Alliedsignal Limited | Retractor |
| WO2003078217A1 (en) * | 2002-03-08 | 2003-09-25 | Breed Automotive Technology, Inc. | Energy absorbing seat belt retractor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8033494B2 (en) | 2008-05-09 | 2011-10-11 | Takata-Petri Ag | Belt retractor with axial securing and method for the production thereof |
| CN104742856A (en) * | 2013-12-30 | 2015-07-01 | 常州博万达汽车安全设备有限公司 | Safety belt winder |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10348853A1 (en) | 2005-05-19 |
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