DE3515525A1 - Spring element consisting of fibre-composite material - Google Patents

Spring element consisting of fibre-composite material

Info

Publication number
DE3515525A1
DE3515525A1 DE19853515525 DE3515525A DE3515525A1 DE 3515525 A1 DE3515525 A1 DE 3515525A1 DE 19853515525 DE19853515525 DE 19853515525 DE 3515525 A DE3515525 A DE 3515525A DE 3515525 A1 DE3515525 A1 DE 3515525A1
Authority
DE
Germany
Prior art keywords
spring element
composite material
element according
corrugated pipe
fibre
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Withdrawn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
DE19853515525
Other languages
German (de)
Inventor
Dietrich Dr. 8035 Gauting Reister
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to DE19853515525 priority Critical patent/DE3515525A1/en
Publication of DE3515525A1 publication Critical patent/DE3515525A1/en
Withdrawn legal-status Critical Current

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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/04—Bellows
    • F16J3/041—Non-metallic bellows
    • 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
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/366—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers made of fibre-reinforced plastics, i.e. characterised by their special construction from such materials

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)

Abstract

The spring element is produced from fibre-composite material and is formed by a continously rotationally symmetrically corrugated tube (1). Such a spring element is very light and can nevertheless be highly stressed.

Description

Federelement aus FaserverbundwerkstoffSpring element made of fiber composite material

I Die Erfindung bezieht sich auf ein Federelement aus Faserverbundwerkstoff, das quer zur Hauptbelastungsrichtung ausgebogene wellenförmige Abschnitte aufweist. Federn aus Faserverbundwerkstoffen haben gegenüber Spiralfedern aus Stahl den besonderen Vorteil eines niedrigeren spezifischen Gewichtes, einer größeren Bruchsicherheit (fail-safe-Verhalten) und einer insgesamt hohen Festigkeit. I The invention relates to a spring element made of fiber composite material, which has wavy sections bent transversely to the main load direction. Compared to coil springs made of steel, springs made of fiber composite materials are special Advantage of a lower specific weight, greater resistance to breakage (fail-safe behavior) and an overall high strength.

Ein bekanntes Federelement aus Faserverbundwerkstoff (WO 85100207) weist im Winkelabstand von 900 zueinander angeordnete Streifen auf, die in einer Zick-Zack-Linie zwischen zwei endseitigen Anschlußbereichen verlaufen. Derartig gestaltete Federelemente sind schwierig herzustellen, insbesondere sind kompliziertere Formen und Fertigungsverfahren nötig.A known spring element made of fiber composite material (WO 85100207) has strips arranged at an angular distance of 900 from one another, which are in a Zig-zag lines run between two terminal areas. Such designed spring elements are difficult to manufacture, in particular are more complicated Forms and manufacturing processes necessary.

Der Erfindung liegt die Aufgabe zugrunde, ein Federelement der vorausgesetzten Gattung zu schaffen, das verhältnismäßig einfach herstellbar ist und dessen Feder- und Dämpfungseigenschaften sich in weiten Grenzen beeinflussen lassen.The invention is based on the object of providing a spring element of the presupposed To create a species that is relatively easy to manufacture and whose spring and damping properties can be influenced within wide limits.

Diese Aufgabe wird erfindungsgemäß durch ein Federelement der eingangs genannten Art geschaffen, das als durchgehend rotationssymmetrisches Wellrohr ausgebildet ist. Ein derartiges Wellrohr läßt sich aus Faserverbundwerkstoff vollautomatisch und daher sehr rationell als Wickelteil herstellen. Die Feder- und Dämpfungseigenschaften können nach Wahl des Faserwerkstoffes, durch variieren des Innen- undloder Außendurchmessers, der Wandstärke, des Faserwinkels und durch das Wickelverfahren - gegebenenfalls auch örtlich differenziert - beeinflußt werden. Eine derartig ausgebildete Faserverbundwerkstoff-Feder ist nicht nur korrosionsfrei und hat ein gutes fail-safe-Verhalten, sondern bietet auch ein großes Potential zur Gewichtsreduzierung etwa im Personenkraftwagenbau. Dort wäre die erfindungsgemäße Feder bei den heute gebräuchlichen Achskonstruktlionen ohne größere Umkonstruktionen verwendbar.This object is achieved according to the invention by a spring element of the initially introduced mentioned type created, which is designed as a continuously rotationally symmetrical corrugated pipe is. Such a corrugated pipe can be made fully automatically from fiber composite material and therefore very Produce efficiently as a wound part. The spring and Damping properties can vary according to the choice of fiber material Inside and / or outside diameter, wall thickness, fiber angle and by the Winding method - possibly also locally differentiated - can be influenced. A fiber composite spring designed in this way is not only corrosion-free and has good fail-safe behavior, but also offers great potential for weight reduction, for example in passenger car construction. There would be the inventive Spring in today's common axle designs without major redesigns usable.

Die Erfindung ist im folgenden an Hand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Die Zeichnung zeigt einen Axialschnitt durch das Federelement.The invention is illustrated below with reference to one in the drawing Embodiment explained in more detail. The drawing shows an axial section through the spring element.

Das in der Zeichnung dargestellte Federelement besteht aus einem Faserverbundwerkstoff und wird im wesentlichen durch ein durchgehend rotationssymmetrisches Wellrohr 1 gebildet. Wie man erkennt, können die Wellen 2, 3, 4 und 5 des Wellrohrs 1 eine unterschiedliche Höhe h aufweisen. Ferner kann der Außendurchmesser Da der Wellen 2, 3, 4 und 5 unterschiedlich sein und gegebenenfalls auch von einem Ende 6 des Federelements zum anderen Ende 7 hin zunehmen.The spring element shown in the drawing consists of a fiber composite material and is essentially through a continuously rotationally symmetrical corrugated pipe 1 educated. As can be seen, the waves 2, 3, 4 and 5 of the corrugated pipe 1 can be a have different heights h. Furthermore, the outer diameter Da of the shafts 2, 3, 4 and 5 may be different and possibly also from one end 6 of the Increase spring element towards the other end 7.

Die Enden , 7 des Federelements können durch kurze zylindrische Ansätze gebildet sein. Ferner kann das Wellrohr 1 unterschiedliche Wandstärken s aufweisen. Durch Variation der Konstruktionsparamter D1, Da, h, s sowie des FaserwickelwinkelsoC lassen sich die Federungs- und Dämpfungseigenschaften des Federelements beeinflussen.The ends 7, 7 of the spring element can be short cylindrical lugs be educated. Furthermore, the corrugated pipe 1 can have different wall thicknesses s. By varying the construction parameters D1, Da, h, s and the fiber winding angleoC the suspension and damping properties of the spring element can be influenced.

- Leerseite -- blank page -

Claims (6)

Patentansprüche: 1. Federelement aus Faserverbundwerkstoff, das quer zur Hauptbelastungsrichtung ausgebogene wellenförmige Abschnitte aufweist, gekennzeichnet durch ein durchgehend rotationssymmetrisches Wellrohr (1).Claims: 1. Spring element made of fiber composite material that transversely having scalloped wave-shaped sections to the main load direction, characterized through a continuously rotationally symmetrical corrugated pipe (1). 2. Federelement nach Anspruch 1, dadurch gekennzeichnet, daß die Wellen (2, 3, 4, 5) des Wellrohrs (1) eine unterschiedliche Höhe (h) aufweisen.2. Spring element according to claim 1, characterized in that the waves (2, 3, 4, 5) of the corrugated pipe (1) have a different height (h). 3. Federelement nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Außenrohrdurchmesser (Da) der Wellen (2, 3, 4, 5) unterschiedlich ist.3. Spring element according to claim 1 or 2, characterized in that the outer tube diameter (Da) of the shafts (2, 3, 4, 5) is different. Federelement nach Anspruch 3, dadurch gekennzeichnet, daß der AuPendurchmesser (D ) der Wellen (2, 3, 4, 5) von a einem Ende (6) des Federelements zum anderen Ende (7) hin zunimmt.Spring element according to Claim 3, characterized in that the outer diameter (D) the shafts (2, 3, 4, 5) from one end (6) of the spring element to the other The end (7) increases. 5. Federelement nach Anspruch 1, dadurch gekennzeichnet, daß die Enden (6, 7) des Federelements durch kurze zylindrische Ansätze gebildet sind.5. Spring element according to claim 1, characterized in that the ends (6, 7) of the spring element are formed by short cylindrical lugs. 6. Federelement nach Anspruch 1, dadurch gekennzeichnet, daß das Wellrohr (1) unterschiedliche Wandstärken (s) aufweist.6. Spring element according to claim 1, characterized in that the corrugated pipe (1) has different wall thicknesses (s).
DE19853515525 1985-04-30 1985-04-30 Spring element consisting of fibre-composite material Withdrawn DE3515525A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19853515525 DE3515525A1 (en) 1985-04-30 1985-04-30 Spring element consisting of fibre-composite material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853515525 DE3515525A1 (en) 1985-04-30 1985-04-30 Spring element consisting of fibre-composite material

Publications (1)

Publication Number Publication Date
DE3515525A1 true DE3515525A1 (en) 1986-11-06

Family

ID=6269464

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19853515525 Withdrawn DE3515525A1 (en) 1985-04-30 1985-04-30 Spring element consisting of fibre-composite material

Country Status (1)

Country Link
DE (1) DE3515525A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989001577A1 (en) * 1987-08-11 1989-02-23 Anders Sten Wedell Spring for compression and tension, mainly in axial direction
FR2639078A1 (en) * 1988-11-17 1990-05-18 Wattelez Sa Usines Gabriel Anti-vibration connection device
DE4139923A1 (en) * 1991-01-09 1992-07-16 Freudenberg Carl Fa Long service life bearing - consists of two coaxial rings joined by elastomer bellows type creased member with elastic protective stops and locked in outer ring
DE19840282A1 (en) * 1998-09-04 2000-03-09 Phoenix Ag Bush/liner esp. for rail vehicles has plastic/metal core with wave contour
DE102006057664A1 (en) * 2006-12-07 2008-06-12 Bayerische Motoren Werke Ag Automotive shock absorber and drag bearing allows for relative motion in the event of mechanical overload
EP2990684A1 (en) * 2014-07-25 2016-03-02 Tobias Keller Flexing spring element made from a fiber plastic composite material
EP2295826A3 (en) * 2009-09-09 2016-09-14 Leichtbau-Zentrum Sachsen GmbH Plastic spring for a motor vehicle undercarriage
FR3041400A1 (en) * 2015-09-17 2017-03-24 Peugeot Citroen Automobiles Sa SUSPENSION SPRING OF MOTOR VEHICLE

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1148718B (en) * 1956-10-31 1963-05-16 Elisabeth Schneider Geb Schwar Non-metallic spring, especially for upholstery, mattresses, etc. like
US4235427A (en) * 1979-05-07 1980-11-25 Walter Bialobrzeski Spring
WO1985000207A1 (en) * 1983-06-20 1985-01-17 The Secretary Of State For Trade And Industry In H Springs for high specific energy storage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1148718B (en) * 1956-10-31 1963-05-16 Elisabeth Schneider Geb Schwar Non-metallic spring, especially for upholstery, mattresses, etc. like
US4235427A (en) * 1979-05-07 1980-11-25 Walter Bialobrzeski Spring
WO1985000207A1 (en) * 1983-06-20 1985-01-17 The Secretary Of State For Trade And Industry In H Springs for high specific energy storage

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989001577A1 (en) * 1987-08-11 1989-02-23 Anders Sten Wedell Spring for compression and tension, mainly in axial direction
US5065988A (en) * 1987-08-11 1991-11-19 Wedell Anders S Spring for compression and tension, mainly in axial direction
FR2639078A1 (en) * 1988-11-17 1990-05-18 Wattelez Sa Usines Gabriel Anti-vibration connection device
DE4139923A1 (en) * 1991-01-09 1992-07-16 Freudenberg Carl Fa Long service life bearing - consists of two coaxial rings joined by elastomer bellows type creased member with elastic protective stops and locked in outer ring
DE19840282A1 (en) * 1998-09-04 2000-03-09 Phoenix Ag Bush/liner esp. for rail vehicles has plastic/metal core with wave contour
DE102006057664A1 (en) * 2006-12-07 2008-06-12 Bayerische Motoren Werke Ag Automotive shock absorber and drag bearing allows for relative motion in the event of mechanical overload
EP2295826A3 (en) * 2009-09-09 2016-09-14 Leichtbau-Zentrum Sachsen GmbH Plastic spring for a motor vehicle undercarriage
EP2990684A1 (en) * 2014-07-25 2016-03-02 Tobias Keller Flexing spring element made from a fiber plastic composite material
FR3041400A1 (en) * 2015-09-17 2017-03-24 Peugeot Citroen Automobiles Sa SUSPENSION SPRING OF MOTOR VEHICLE

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