WO2021110222A1 - Dispositif d'accouplement, en particulier pour enrouleur de ceinture et enrouleur de ceinture comprenant des dispositifs d'accouplement - Google Patents

Dispositif d'accouplement, en particulier pour enrouleur de ceinture et enrouleur de ceinture comprenant des dispositifs d'accouplement Download PDF

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Publication number
WO2021110222A1
WO2021110222A1 PCT/DE2020/200102 DE2020200102W WO2021110222A1 WO 2021110222 A1 WO2021110222 A1 WO 2021110222A1 DE 2020200102 W DE2020200102 W DE 2020200102W WO 2021110222 A1 WO2021110222 A1 WO 2021110222A1
Authority
WO
WIPO (PCT)
Prior art keywords
coupling
axis
rotation
coupling device
retractor
Prior art date
Application number
PCT/DE2020/200102
Other languages
German (de)
English (en)
Inventor
Wilhelm Tejder
Hermann Hasse
Uwe Eisemann
Peter Baumgartner
Paul Sprongl
Original Assignee
Joyson Safety Systems Germany 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 Joyson Safety Systems Germany Gmbh filed Critical Joyson Safety Systems Germany Gmbh
Publication of WO2021110222A1 publication Critical patent/WO2021110222A1/fr

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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
    • B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
    • 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
    • B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
    • B60R2022/468—Reels with means to tension the belt in an emergency by forced winding up characterised by clutching means between actuator and belt reel

Definitions

  • Coupling device in particular for a belt retractor, and belt retractor with coupling devices
  • the invention relates to coupling devices, in particular for belt retractors, and to belt retractors which are equipped with coupling devices.
  • a coupling device is known from the European patent EP 1 981 739 B1 which can be arranged between a first and a second device and can couple the first and second devices in an engaged state and decouple them in a disengaged state.
  • the coupling device has a coupling element which, in a coupling position, switches the coupling device into the coupling state and in a decoupling position switches the coupling device into the disengaging state.
  • the coupling element executes a translational movement due to inertia and thereby changes from the decoupling position to the coupling position.
  • the invention is based on the object of specifying a coupling device with improved coupling behavior.
  • the coupling element is a pivotable element which is mounted on a pivot axis and is pivotable about this.
  • a major advantage of the coupling device according to the invention is that, due to the arrangement of the pivotable element around the pivot axis, the pivotable element responds and the coupling device only engages when the second device, for example a coupling or planetary gear, is controlled by a drive element or is set in rotation immediately and only then does a pivoting or tilting of the coupling element occur.
  • the coupling device cannot be coupled in if the coupling device is only translational (or linear), for example in the case of an arrangement in a Vehicle is accelerated forward or backward.
  • the second device must therefore be set in a rotational movement so that due to the physical inertia of the coupling device and / or a change in position of the pivotable element, this initially - in comparison to the second device - stops or remains, and only after a time delay that pivotable element follows the rotational movement and then rotates.
  • the decisive factor is therefore the change in position of the pivotable element, on the basis of which it is fed into a counter-element, for example in the form of an external toothing of a belt reel, and thereby couples it.
  • An advantageous embodiment of the invention provides for the pivot axis to be arranged on a carrier unit and to connect the carrier unit to the second device in a tiltable manner, in particular on one end face.
  • the carrier unit is immediately set into a tilting movement.
  • Both carrier elements can advantageously be connected to one another via an axis, in particular a pivot axis.
  • the carrier unit can be activated when the second device also perform a tilting or bending movement and thereby beneficially supported the pivotable element in its pivoting movement for coupling.
  • the axis of rotation of the second carrier element or in the case of a one-piece design of the carrier unit, is arranged coaxially with an axis of rotation of the first and / or the second device.
  • pivot axis is arranged radially offset from the axis of rotation.
  • the bearing friction can be configured to be adjustable in order to ensure that the coupling device lags behind the second device during acceleration and the coupling device can thus be optimized.
  • adjustable or different fits of the bearing pairs are conceivable for this purpose, and / or an adaptation of the surface structure on the bearing running surfaces with appropriate lubricants.
  • the tiltable connection between the second device and the carrier unit or the carrier element is a tooth system, for example in the form of an involute tooth system.
  • the rotation or tilting should only be so small that a distance is covered that is sufficient to introduce the pivotable element into the coupling position. This depends, among other things, on the depth of engagement of a coupling partner, for example the tooth height in the case of an external toothing of the coupling partner.
  • a shape of the carrier unit or the carrier elements is designed such that a center of gravity of this alone or together with the coupling element arranged thereon corresponds to the axis of rotation or the axis of rotation. This ensures smooth, low-vibration operation of the coupling device even at high speeds.
  • the invention also relates to a belt retractor which is equipped with a coupling device as described above.
  • a belt reel of the belt retractor preferably forms the above-mentioned first device or is directly connected to it, and a retractor device of the belt retractor preferably forms the above-mentioned second device.
  • the retractor is preferably an electrical or electronic retractor.
  • the axis of rotation and the belt reel axis are preferably arranged coaxially or with the same axis.
  • the pivot axis is set in a circular rotational movement around the belt reel axis.
  • the pivotable element preferably has a first and a second end section which lie on different sides of the pivot axis.
  • the end sections are preferably deflected differently in the belt winding direction, namely preferably such that the first end section - viewed from the axis of rotation of the carrier element - pivots radially outward and the second end section - viewed from the axis of rotation of the carrier element - radially inward pivots.
  • the pivotable element in particular its second end section, preferably engages in the coupling position in an external toothing of a belt reel wheel which is connected to the belt reel or is formed thereon.
  • the pivotable element, in particular its first end section can, in the coupling position, engage in an internal toothing of the or another belt reel wheel connected to the belt reel or molded onto it.
  • One or more central gear wheels with internal and / or external toothing can also be present, into which or into which the pivotable element engages or couples.
  • the first end section has - viewed from the axis of rotation of the carrier element - preferably a tooth structure radially on the outside.
  • the second end section - viewed from the axis of rotation of the coupling wheel - has a tooth structure radially on the inside.
  • the winding device is preferably reversible. It is preferably formed by an electric motor or preferably comprises one. It is also advantageous if the belt retractor has an emergency tensioning device, which is preferably formed by a pyrotechnic drive, in particular a pyrotechnic ball tensioner drive, or comprises such a device.
  • Figure 1 shows an embodiment of a coupling device according to the invention in a perspective view
  • FIG. 2 shows the coupling device according to FIG. 1 in a perspective illustration and in a coupling state
  • FIG. 3 shows a perspective detail of a tiltable connection
  • FIG. 4 shows the coupling device according to FIG. 1 in the disengaged state and in a side view
  • FIG. 5 shows the coupling device according to FIG. 4 in an engaged state and in a side view.
  • FIG. 1 each show a coupling device according to the invention in perspective.
  • the coupling device 10 is in a decoupling position, a coupling element in the form of a pivotable element 11 not being connected to a first device 6, for example in FIG Form of a belt reel or a pinion on which the belt reel is arranged directly, is positively connected.
  • FIG. 2 the pivotable element 11 is in a coupling position, the pivotable element 11 being positively connected to the first device 6.
  • a torque or a force, proceeding from the second device 8, for example in the form of a coupling wheel, planetary gear or a pinion, can thus be transmitted to the first device 6.
  • the coupling device 10 comprises a carrier unit 13 which has an axis of rotation which, together with the first and second device 6; 8 is arranged coaxially.
  • the common axis of these components is thus the axis of rotation 14 (shown in FIG. 4).
  • the carrier unit 13 has a pivot axis 12 which pivotally connects the pivotable element 11 to the carrier unit 13.
  • the pivot axis 12 runs in particular parallel to the axis of rotation 14.
  • FIG. 3 shows a perspective illustration of an enlarged section of a tiltable connection between the carrier unit 13 and the second device 8, whereby the coupling position is initiated.
  • the tiltable connection is arranged on an end face S of the carrier unit 13 or the second device 8 and is connected to the second device 8 by means of a toothing.
  • the two toothings form a pair of teeth, the toothing of the second device 8 having two teeth and the toothing of the carrier unit 13 having three teeth.
  • the carrier unit 13 is divided at least in two.
  • the Carrier unit 13 comprises a first carrier element 13a and a second carrier element 13b. Both support elements 13a; 13b are connected to one another in a pivotable manner via the pivot axis 12.
  • the carrier unit 13 thus has two pivot points - on the axis of rotation 14 and the pivot axis 12 - and a floating bearing in the form of the toothing on the end face S.
  • the toothing thus enables the carrier unit 13 to perform a tilting, swiveling or rotational movement about its axis of rotation 14, since a slight change in position relative to the second device 8 is made possible.
  • the toothing strengthens or brings about the change in position when a pressure angle of the pair of teeth changes.
  • the second bearing point on the end face S so that the carrier unit 13 can be rotated around an angular section in the circumferential direction of the axis of rotation 14 and is loosely supported, so that only a single linear (path) movement can be carried out.
  • Bearing friction between the bearing points of the carrier unit 13 to its axis of rotation 14 and of the pivotable element 11 to its pivot axis 12 also have an influence on the inertia behavior of the coupling device 10.
  • the bearing friction can accordingly be or be adaptable depending on the desired coupling behavior. So whether the bearing friction should be easy or difficult.
  • the carrier unit 13 it is desirable for the carrier unit 13 to lag behind the accelerated second device 8. Alternatively, this can also be done a deceleration behavior of the carrier unit 13 can be achieved by means of the bearing friction or a separate deceleration device.
  • the carrier unit 13 is also tilted relative to an axis of the second device 8 due to the changed pressure angle of the pair of teeth.
  • This change in position can be clearly seen in FIGS. 3, 4 and 5, for example, in the area of the end face S of the carrier element 13a. Due to this tilting, the pivotable element 11 rotates - compared to the starting position - and engages in the external toothing 6b, in this case a sawtooth toothing, of the first device 6.
  • the coupling pair is positively coupled and rotates together. In this way, at least forces can be transmitted in one direction of rotation - counterclockwise in the case of FIGS. 1 to 5.

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

Abstract

L'invention concerne, entre autres, un dispositif d'accouplement (10) qui peut être disposé entre un premier et un second dispositif (6, 8) et qui peut accoupler les premier et second dispositifs dans un état d'accouplement et les désaccouple dans un état de désaccouplement, le dispositif d'accouplement (10) présente au moins un élément d'accouplement qui commute le dispositif d'accouplement (10) à l'état d'accouplement dans une position d'accouplement et qui commute le dispositif d'accouplement (10) à l'état de désaccouplement dans une position de désaccouplement, et l'élément d'accouplement est converti de la position de désaccouplement à la position d'accouplement en conséquence de forces d'inertie lorsque le second dispositif (8) est démarré. Selon l'invention, l'élément d'accouplement est un élément pivotant (11) qui est monté sur un axe de pivotement (12).
PCT/DE2020/200102 2019-12-03 2020-11-19 Dispositif d'accouplement, en particulier pour enrouleur de ceinture et enrouleur de ceinture comprenant des dispositifs d'accouplement WO2021110222A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEDE102019218814.1 2019-12-03
DE102019218814 2019-12-03
DE102020204423.6A DE102020204423A1 (de) 2019-12-03 2020-04-06 Kupplungseinrichtung, insbesondere für einen Gurtaufroller sowie Gurtaufroller mit Kupplungseinrichtungen
DEDE102020204423.6 2020-04-06

Publications (1)

Publication Number Publication Date
WO2021110222A1 true WO2021110222A1 (fr) 2021-06-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2020/200102 WO2021110222A1 (fr) 2019-12-03 2020-11-19 Dispositif d'accouplement, en particulier pour enrouleur de ceinture et enrouleur de ceinture comprenant des dispositifs d'accouplement

Country Status (2)

Country Link
DE (1) DE102020204423A1 (fr)
WO (1) WO2021110222A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040075008A1 (en) * 2002-07-11 2004-04-22 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Webbing retractor
WO2005097562A1 (fr) * 2004-04-01 2005-10-20 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Enrouleuse de sangles
US20050247811A1 (en) * 2004-05-06 2005-11-10 Trw Automotive Gmbh Belt retractor having a pretensioning drive
EP1981739B1 (fr) 2006-02-07 2009-07-15 Autoliv Development AB Enrouleur de ceinture avec blocage de l'accouplement
US20110006147A1 (en) * 2009-06-19 2011-01-13 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Webbing winding device
EP3254914A1 (fr) * 2016-06-10 2017-12-13 TRW Automotive GmbH Embrayage pour tendeur de ceinture de sécurité et procédé pour transférer l'embrayage à partir d'une position en prise dans une position de désaccouplement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19844092C2 (de) * 1998-09-25 2000-08-10 Breed Automotive Tech Kupplung zur Übertragung eines Drehmoments auf eine Gurtspule eines Sicherheitsgurtaufrollers
DE102008028698B4 (de) * 2008-06-17 2018-12-06 Key Safety Systems, Inc. Rückhaltevorrichtung
DE102014009038B4 (de) * 2014-06-24 2017-08-31 Trw Automotive Gmbh Kupplung für einen Gurtstraffer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040075008A1 (en) * 2002-07-11 2004-04-22 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Webbing retractor
WO2005097562A1 (fr) * 2004-04-01 2005-10-20 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Enrouleuse de sangles
US20050247811A1 (en) * 2004-05-06 2005-11-10 Trw Automotive Gmbh Belt retractor having a pretensioning drive
EP1981739B1 (fr) 2006-02-07 2009-07-15 Autoliv Development AB Enrouleur de ceinture avec blocage de l'accouplement
US20110006147A1 (en) * 2009-06-19 2011-01-13 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Webbing winding device
EP3254914A1 (fr) * 2016-06-10 2017-12-13 TRW Automotive GmbH Embrayage pour tendeur de ceinture de sécurité et procédé pour transférer l'embrayage à partir d'une position en prise dans une position de désaccouplement

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