DE10235550A1 - Rotational damper, in particular, for damping the rotation of a belt shaft in a safety belt coiler comprises a screw element which is firmly attached to the damper shaft in the damper housing - Google Patents
Rotational damper, in particular, for damping the rotation of a belt shaft in a safety belt coiler comprises a screw element which is firmly attached to the damper shaft in the damper housing Download PDFInfo
- Publication number
- DE10235550A1 DE10235550A1 DE2002135550 DE10235550A DE10235550A1 DE 10235550 A1 DE10235550 A1 DE 10235550A1 DE 2002135550 DE2002135550 DE 2002135550 DE 10235550 A DE10235550 A DE 10235550A DE 10235550 A1 DE10235550 A1 DE 10235550A1
- Authority
- DE
- Germany
- Prior art keywords
- wall
- rotary damper
- shaft
- damper
- housing
- 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- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/12—Devices with one or more rotary vanes turning in the fluid any throttling effect being immaterial, i.e. damping by viscous shear effect only
-
- 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
- B60R2022/282—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices using fluids or vico-elastic materials
Abstract
Description
Die Erfindung betrifft einen Drehdämpfer zur Dämpfung einer Drehbewegung, insbesondere zur Dämpfung der Drehbewegung einer Gurtwelle in einem Sicherheitsgurt-Aufroller für Kraftfahrzeuge.The invention relates to a rotary damper for damping a Rotational movement, especially for damping the rotation of a belt shaft in a seat belt retractor for motor vehicles.
Die Dämpfung von Drehbewegungen in Sicherheitsgurt-Aufrollern in Kraftfahrzeugen ist seit langem ein Problem. Zahlreiche der bekannten Dämpfer besitzen die Eigenschaft, dass sie lediglich Drehbewegungen um einen Gesamt-Drehwinkel von kleiner als 360° dämpfen.The damping of rotary movements in Seat belt retractors in motor vehicles has long been a Problem. Many of the well-known dampers have the property that it only rotates by a total rotation angle of less than 360 ° steam.
Der Erfindung liegt die Aufgabe zugrunde, einen möglichst einfachen Drehdämpfer zu schaffen, der eine Drehbewegung um einen beliebigen Drehwinkel möglichst gleichmäßig dämpft.The invention is based on the object one if possible simple rotary damper to create a rotational movement of any angle preferably dampens evenly.
Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. Der Kern der Erfindung liegt darin, in einem Gehäuse mindestens ein als Schraubenwand ausgebildetes Konvektions-Element vorzusehen, welches mit einer drehbar gelagerten Welle drehfest verbunden ist. Unter einer Schraubenwand wird ein nach Art eines Gewindes wendelförmig um einen in der Regel zylindrischen Tragkörper umlaufendes Profil verstanden, welches zum Beispiel als Rampe oder Sims ausgeführt sein kann. Im die Längsachse der tragenden Welle enthaltenden Schnitt kann das Profil durch gerade Flächen über Kantenbereiche begrenzt sein oder derart gewölbt sein, dass die das Profil begrenzenden Wände kantenfrei ineinander übergehen. Durch das Konvektions-Element wird das zu dämpfende Drehmoment in eine Bewegung des Dämpfungs-Mediums mit axialer Komponente umgewandelt. Von besonderer Bedeutung für die Dämpfung können hierbei auftretende Scherungen des Dämpfungs-Mediums sein. Die Schraubenwand kann einfach umlaufend, aber auch, je nach dem einzustellenden Fließverhalten des Dämpfungs-Mediums, mehrfach umlaufend ausgeführt sein, also eine oder mehrere Windungen aufweisen. Abhängig vom einzustellenden Fließverhalten kann eine eingängige oder eine mehrgängige Schraubenwand eingesetzt sein. Bevorzugt wird eine Schraubenwand, welche durch geschlossene und gerade Schraubenregelflächen begrenzt ist. Alternativ sind aber je nach den einzustellenden Fließeigenschaften des Dämpfungs-Mediums auch Schraubenwände einsetzbar, die durch offene und/oder schiefe Schraubenregelflächen begrenzt sind.This task is due to the characteristics of claim 1 solved. The essence of the invention is in a housing at least one as a screw wall provided convection element to be provided, which with a rotatably mounted shaft is rotatably connected. Under a screw wall a helical around one usually like a thread cylindrical support body understood profile, which for example as a ramp or Running Sims can be. In the longitudinal axis the section containing the load-bearing shaft can cut the profile through straight Areas over edge areas be limited or so curved that the walls delimiting the profile merge into one another without edges. The convection element converts the torque to be damped into one Movement of the damping medium converted with axial component. Of particular importance for the damping can occurring shear of the damping medium his. The screw wall can be circumferential, but also, depending on the flow behavior to be set the damping medium, executed several times all round be, i.e. have one or more turns. Depending on the flow behavior to be set can be a catchy or a multi-start screw wall be used. A screw wall is preferred, which through closed and straight screw control surfaces is limited. alternative Depending on the flow properties of the damping medium, screw walls can also be used, which is limited by open and / or inclined screw control surfaces are.
Eine mögliche Aufteilung des Arbeitsraums in Teil-Arbeitsräume führt zu weiteren Einstellmöglichkeiten für das Fließverhalten des Dämpfungs-Mediums.A possible division of the work space into Part workspaces leads to further setting options for the flow behavior of the damping medium.
Eine derartige Einstellung ist zum Beispiel auch möglich durch die Querschnittgestaltung des gegebenenfalls vorgesehenen mindestens einen Verbindungskanals zwischen den Teil-Arbeitsräumen, durch die Gestaltung des Querschnittsprofils der Schraubenwand oder durch die Gestaltung der Schraubenwand-Einhüllenden. Schließlich kann das Dämpfungs-Medium auch unter eine Vorspannung gesetzt werden, sodass es im Arbeitsraum mit einem Druck vorliegt, der größer ist als der Umgebungsdruck. Gerade bei hochviskosen Flüssigkeiten, wie zum Beispiel Silikonen, führt eine derartige Vorspannung zu einer ausnutzbaren Änderung der Fließeigenschaften.Such an attitude is to Example also possible through the cross-sectional design of the provided at least one connecting channel between the sub-work spaces the design of the cross-sectional profile of the screw wall or through the design of the screw wall envelope. Finally, can the damping medium also be placed under a preload so that it is in the work space with a pressure that is greater than the ambient pressure. Especially with highly viscous liquids, such as silicones such bias to an exploitable change the flow properties.
Wenn die Wandstärke einer einzelnen Windung der Schraubenwand vergleichbar ist zum Abstand zwischen zwei benachbarten Windungen, setzt die Schraubenwand eine Drehung der Welle im Gehäuse einen entsprechend hohen Widerstand entgegen, was gerade bei der Verwendung des Drehdämpfers im Zusammenspiel mit einer Gurtwelle ausgenutzt werden kann.If the wall thickness of a single turn the screw wall is comparable to the distance between two neighboring ones Turns, the screw wall inserts a rotation of the shaft in the housing correspondingly high resistance to what exactly when using of the rotary damper can be used in conjunction with a belt shaft.
Auch eine innere Gehäusewand, welche einer äußeren Stirnwand der Schraubenwand unter geringem Spiel nahe benachbart ist, führt zu einem relativ großen Widerstand, den die Schraubenwand einer Drehbewegung im Gehäuse entgegensetzt.Also an inner case wall, which is an outer end wall the screw wall is closely adjacent with little play, leads to a relative huge Resistance that the screw wall opposes to a rotary movement in the housing.
Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnung näher erläutert. In dieser zeigen:Embodiments of the invention are explained in more detail with reference to the drawing. In this show:
Im Folgenden wird unter Bezugnahme
auf die
Auf der Welle
Eine Projektion der Schraubenwand
Die Gehäusewand
Auf dem Tragkörper
Die Welle
Im Folgenden wird die Funktionsweise
des Drehdämpfers
Durch die Dimensionierung der Schraubenwand
Vorteilhaft an dem Drehdämpfer
Die Flüssigkeit
Im Folgenden wird unter Bezugnahme
auf die
Die Schraubenwand
Die Wand
Im Folgenden wird unter Bezugnahne
auf die
Zur äußeren Stirnwand
Durch die genannte Ausgestaltung
der Schraubenwand
Im Folgenden wird unter Bezugnahme
auf die
Die Schraubenwand
Bei einer Drehung der Welle
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002135550 DE10235550A1 (en) | 2002-08-03 | 2002-08-03 | Rotational damper, in particular, for damping the rotation of a belt shaft in a safety belt coiler comprises a screw element which is firmly attached to the damper shaft in the damper housing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002135550 DE10235550A1 (en) | 2002-08-03 | 2002-08-03 | Rotational damper, in particular, for damping the rotation of a belt shaft in a safety belt coiler comprises a screw element which is firmly attached to the damper shaft in the damper housing |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10235550A1 true DE10235550A1 (en) | 2004-02-19 |
Family
ID=30469387
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2002135550 Withdrawn DE10235550A1 (en) | 2002-08-03 | 2002-08-03 | Rotational damper, in particular, for damping the rotation of a belt shaft in a safety belt coiler comprises a screw element which is firmly attached to the damper shaft in the damper housing |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10235550A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004032172A1 (en) * | 2004-07-02 | 2006-01-19 | Suspa Holding Gmbh | Rotary damper for damping the rotary movement of a belt shaft of a safety belt winder in a vehicle comprises a housing, an operating chamber filled with a damping medium, a shaft, a convection element and a delimiting wall |
DE102005014316B3 (en) * | 2005-03-30 | 2006-04-13 | Ist Systems Gmbh | Swinging latch for door opener has pivoted lever with loading spring under compression and sector gear and pinion driving damper vanes inside cylindrical chamber |
DE102005040025A1 (en) * | 2005-08-23 | 2007-03-01 | Suspa Holding Gmbh | Belt shaft rotational damper for use in safety belt roll up device in motor vehicle, has damping-medium partially filling operational space, and powder mixed with damping medium for adjusting rotational damping |
DE102006048349A1 (en) * | 2006-10-12 | 2008-04-17 | Trw Automotive Gmbh | Rotation damper for damping rotary motion of shaft, has working chamber, which is filled with damping medium and has rotating element, which is arranged in working chamber |
DE102008026486A1 (en) * | 2008-06-03 | 2009-12-10 | Suspa Holding Gmbh | Rotation damper for damping rotation movement of belt retractor unit in motor vehicle, has rotor rotatable relative to housing that partly forms working chamber, where pressure in working chamber is changeable in continuous manner |
CN101737449B (en) * | 2009-12-29 | 2012-06-20 | 重庆仪表材料研究所 | Screw rod type magnetorheological rotary damper |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1855921A (en) * | 1930-03-31 | 1932-04-26 | Mcnab Absorbolift Inc | Shock absorber |
BE653587A (en) * | 1963-09-27 | 1965-01-18 | ||
GB1021103A (en) * | 1964-04-16 | 1966-02-23 | All American Eng Co | Energy absorber unit |
US3523466A (en) * | 1966-10-07 | 1970-08-11 | Powder Couplings Ltd | Mechanical transmissions |
DE2457042A1 (en) * | 1974-01-02 | 1975-07-10 | Messier Fa | ROTARY SHOCK ABSORBER |
GB1441822A (en) * | 1973-06-27 | 1976-07-07 | Grisebach H T | Door closers |
JPS63231029A (en) * | 1987-03-17 | 1988-09-27 | Canon Electronics Inc | Rotary fluid damper |
WO1988009885A1 (en) * | 1987-06-10 | 1988-12-15 | Sugatsune Industrial Co., Ltd. | Regulatable braking force multi-plate damper using viscous fluid |
EP0446091A1 (en) * | 1990-03-09 | 1991-09-11 | Glaenzer Spicer | Rotary shock absorber with viscous fluid |
JPH06173994A (en) * | 1993-08-02 | 1994-06-21 | Nhk Spring Co Ltd | Speed variable device |
DE4244484A1 (en) * | 1992-12-30 | 1994-07-07 | Itw Ateco Gmbh | Rotary damper |
JPH0742781A (en) * | 1993-07-31 | 1995-02-10 | Nhk Spring Co Ltd | Slow operating device |
DE10034393A1 (en) * | 2000-07-14 | 2002-01-31 | Autoliv Dev | Seat belt winder has overflow bores arranged between a working chamber and a pressure chamber |
-
2002
- 2002-08-03 DE DE2002135550 patent/DE10235550A1/en not_active Withdrawn
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1855921A (en) * | 1930-03-31 | 1932-04-26 | Mcnab Absorbolift Inc | Shock absorber |
BE653587A (en) * | 1963-09-27 | 1965-01-18 | ||
GB1021103A (en) * | 1964-04-16 | 1966-02-23 | All American Eng Co | Energy absorber unit |
US3523466A (en) * | 1966-10-07 | 1970-08-11 | Powder Couplings Ltd | Mechanical transmissions |
GB1441822A (en) * | 1973-06-27 | 1976-07-07 | Grisebach H T | Door closers |
DE2457042A1 (en) * | 1974-01-02 | 1975-07-10 | Messier Fa | ROTARY SHOCK ABSORBER |
JPS63231029A (en) * | 1987-03-17 | 1988-09-27 | Canon Electronics Inc | Rotary fluid damper |
WO1988009885A1 (en) * | 1987-06-10 | 1988-12-15 | Sugatsune Industrial Co., Ltd. | Regulatable braking force multi-plate damper using viscous fluid |
EP0446091A1 (en) * | 1990-03-09 | 1991-09-11 | Glaenzer Spicer | Rotary shock absorber with viscous fluid |
DE4244484A1 (en) * | 1992-12-30 | 1994-07-07 | Itw Ateco Gmbh | Rotary damper |
JPH0742781A (en) * | 1993-07-31 | 1995-02-10 | Nhk Spring Co Ltd | Slow operating device |
JPH06173994A (en) * | 1993-08-02 | 1994-06-21 | Nhk Spring Co Ltd | Speed variable device |
DE10034393A1 (en) * | 2000-07-14 | 2002-01-31 | Autoliv Dev | Seat belt winder has overflow bores arranged between a working chamber and a pressure chamber |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004032172A1 (en) * | 2004-07-02 | 2006-01-19 | Suspa Holding Gmbh | Rotary damper for damping the rotary movement of a belt shaft of a safety belt winder in a vehicle comprises a housing, an operating chamber filled with a damping medium, a shaft, a convection element and a delimiting wall |
DE102005014316B3 (en) * | 2005-03-30 | 2006-04-13 | Ist Systems Gmbh | Swinging latch for door opener has pivoted lever with loading spring under compression and sector gear and pinion driving damper vanes inside cylindrical chamber |
DE102005040025A1 (en) * | 2005-08-23 | 2007-03-01 | Suspa Holding Gmbh | Belt shaft rotational damper for use in safety belt roll up device in motor vehicle, has damping-medium partially filling operational space, and powder mixed with damping medium for adjusting rotational damping |
DE102006048349A1 (en) * | 2006-10-12 | 2008-04-17 | Trw Automotive Gmbh | Rotation damper for damping rotary motion of shaft, has working chamber, which is filled with damping medium and has rotating element, which is arranged in working chamber |
DE102008026486A1 (en) * | 2008-06-03 | 2009-12-10 | Suspa Holding Gmbh | Rotation damper for damping rotation movement of belt retractor unit in motor vehicle, has rotor rotatable relative to housing that partly forms working chamber, where pressure in working chamber is changeable in continuous manner |
CN101737449B (en) * | 2009-12-29 | 2012-06-20 | 重庆仪表材料研究所 | Screw rod type magnetorheological rotary damper |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8139 | Disposal/non-payment of the annual fee |