WO2005035349A1 - Amortisseur de direction pour motocycle - Google Patents

Amortisseur de direction pour motocycle Download PDF

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Publication number
WO2005035349A1
WO2005035349A1 PCT/NL2004/000728 NL2004000728W WO2005035349A1 WO 2005035349 A1 WO2005035349 A1 WO 2005035349A1 NL 2004000728 W NL2004000728 W NL 2004000728W WO 2005035349 A1 WO2005035349 A1 WO 2005035349A1
Authority
WO
WIPO (PCT)
Prior art keywords
steering damper
damper according
steering
motorcycle
housing
Prior art date
Application number
PCT/NL2004/000728
Other languages
English (en)
Inventor
Marcel Radt
Philipp Habsburg
Original Assignee
Wp Suspension B.V.
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 Wp Suspension B.V. filed Critical Wp Suspension B.V.
Publication of WO2005035349A1 publication Critical patent/WO2005035349A1/fr

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
    • F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/145—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only rotary movement of the effective parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K21/00—Steering devices
    • B62K21/08—Steering dampers

Definitions

  • the invention relates to a steering damper in accordance with the preamble of claim 1.
  • a steering damper of this type is known from EP-A-240 499.
  • the damper comprises a housing in which there is a hydraulic chamber recessed in sector form, inside which a wing can rotate with damping from hydraulic fluid located in the chamber.
  • the chamber is bounded by a cover.
  • the chamber is divided into two compartments by the wing, the compartments extending on either side of the wing.
  • the hydraulic fluid in this case has the possibility of flowing from one compartment to the other via bypass passages provided in the cover.
  • this steering damper is complex and expensive to produce.
  • the spindle on which the wing is provided has to be surrounded by the housing over more than 180°, and the way in which it is surrounded has to be sealed in order to prevent undesirable leakage between the compartments.
  • the maximum level of damping which can be achieved is limited and/or the known steering damper is relatively bulky if higher levels of damping are to be achieved.
  • bypass passages and the plurality of drilled holes oriented transversely to it only allows stepped adjustment of the level of damping by means of a screw being screwed further into or out of the passage in order thereby to open up a larger or smaller number of drilled holes.
  • the steering damper comprises a substantially rotationally symmetrical chamber with a central rotation spindle on which at least two wings are provided.
  • the wings together with at least two separating projections arranged in a fixed position in the chamber, divide the chamber into at least four compartments .
  • two compartments located next to one another are connected to one another by means of fluid passages.
  • the rotational symmetry advantageously allows the structure to be compact. Using at least four compartments allows a considerable greater level of damping to be achieved in a more compact structure.
  • the chamber can be produced in a simple way and with a high degree of accuracy, for example by being drilled out, so that any leakage between, for example, the free ends of the wings and the chamber wall is reliably prevented.
  • the susceptibility to faults is low, partly on account of the fact that the circumferential wall part of the spindle which extends inside the chamber no longer has to be largely surrounded in a sealing manner.
  • the fluid passages are provided as continuous passages running through the separating projections arranged in a fixed position.
  • This allows a compact overall structure, in particular compared to the prior art, in which the passages are provided in the cover.
  • the passages can then easily be milled or drilled out during manufacture, and continuous adjustment of the level of damping is made possible, for example by providing an adjustable throttle element in the passage, which closes off the continuous passage to a greater or lesser extent.
  • One throttle element with associated damping may in this case, for example, be fixed in the factory (for example as a function of the type of motorcycle) , while the other throttle element can be adjusted by the motorcyclist.
  • At least one of the throttle elements is provided with electronic control means for setting the desired level of damping as a function of a measured parameter.
  • the measured parameter may, for example, be the speed of the motorcycle.
  • the control means may in this case be designed to open up the fluid passage below a certain threshold value for the measured parameter.
  • the threshold value is then advantageously minimized, with the result that steering at low speeds, for example, is not made unnecessarily more difficult.
  • the control means may be designed to throttle the passage to an increasing extent above the specific threshold value, with the result that the threshold value then constantly increases, so that sudden steering movements as a result of an obstacle on the roadway at relatively high speeds, for example, are advantageously damped.
  • the invention also relates to an assembly comprising a motorcycle and a steering damper according to one of claims 21 - 25.
  • Fig. 1 shows a cross-sectional view through an embodiment of a steering damper according to the invention
  • Fig. 2 shows a cross-section on line II-II in Fig. 1;
  • Fig. 3 shows a diagrammatic view in longitudinal section through the steering damper from Fig. 1, provided on top of a crown piece of the steering system of a motorcycle;
  • Fig. 4 shows a plan view of Fig. 3
  • Fig. 5 shows a diagrammatic longitudinal section through a variant of a steering damper according to the invention which is installed in a steering system of a motorcycle;
  • Fig. 6 shows a cross section on line VI-VI in Fig. 5;
  • Fig. 7 shows a side view of the steering damper shown in Fig. 5;
  • Fig. 8 shows a perspective view of a variant embodiment of the steering damper
  • Fig. 9 shows a cross-sectional view of the steering damper shown in Fig. 8.
  • Fig. 10 shows a cross-sectional view on line X-X in Fig. 9;
  • Fig. 11 shows a perspective view of the casing part of the housing from Fig. 8.
  • the steering damper 1 comprises a housing 2 in which there is a cylindrical recessed hydraulic chamber 3.
  • the chamber 3 is closed off at the topside by a cover 4.
  • a spindle 5 is mounted rotatably in the centre of the chamber 3.
  • Two wings 7 positioned diametrically opposite one another are provided on the spindle 5.
  • the free ends of the wings bear against the circumferential wall of the chamber 3 in such a manner that they can still rotate freely.
  • each separating projection 8, 9 bears in a substantially sealing manner against the circumferential wall of the chamber 3 and the circumferential wall of the spindle 5. In this way, four compartments are formed between the wings 7 and the separating projections 8, 9.
  • a continuous fluid passage 12 is provided in the separating projection 8. Furthermore, there is a throttle element 13 extending partway into the passage 12.
  • the throttle element 13 is in this case formed by a pin which extends in the radial direction with respect to the spindle 5.
  • the throttle element 13 can be moved back and forth by means of an actuating button 14 provided at the free end of the pin being turned. This allows the passage 12 to be throttled to a greater or lesser extent and thus allows the level of damping to be manually adapted as desired by a motorcyclist.
  • a continuous fluid passage is also provided in the separating projection 9. This fluid passage is located at a different level from the passage 12 and consequently cannot be seen in the cross section illustrated in Fig. 1.
  • a throttle element 18 which extends partway into this passage is provided.
  • the throttle element 18 is in this case formed by a pin which extends in the axial direction parallel to the spindle 5.
  • the housing 2 is provided with mounting holes 19 for attaching it to the steering system or the frame of a motorcycle.
  • the spindle 5 extends downwards through a base part of the housing 2, where it is connected to an arm 20 which is used for attachment to the frame or the steering system of a motorcycle.
  • Figs. 3 and 4 show one possible way of fitting the steering damper 1 to the top of the steering system of a motorcycle.
  • the steering system in this case comprises a steering head pin 25 which is mounted rotatably in a steering head 26.
  • the steering head 26 is fixedly connected to the frame of the motorcycle.
  • the steering head pin 25 is connected to crown pieces 27 and 28 positioned above and below it.
  • the housing 2 is in this case fixedly connected to the upper crown piece 27 by means of a connection 29, while the spindle 5 is fixedly connected, via the arm 20, to the steering head 26 or the frame 30 of the motorcycle.
  • Turning the front wheel or the handlebars connected to the crown pieces 27, 28 therefore leads to turning of the housing 2 together with the separating projections 8, 9 with respect to the spindle 5 together with the wings 7.
  • Figs. 5 - 7 show a variant of the steering damper, which is installed in the steering system of a motorcycle.
  • the steering damper 50 comprises a housing 51 with a chamber 52 which is closed off by a cover 53.
  • Two separating projections 56 are provided on the cover 53.
  • Continuous fluid passages 58 provided with adjustable throttle elements 57 are arranged in the separating projections 56.
  • the steering system comprises a steering head pin 60 which is accommodated rotatably in a steering head 61.
  • the steering head 61 is fixedly connected to the frame of the motorcycle.
  • the steering head pin 60 is connected to crown pieces 62 and 63 located above and below it, respectively.
  • the housing 51 is in this case fixedly connected to the steering head 61 by means of mounting lugs 64.
  • the spindle 54 of the steering damper 50 is of hollow design and is non-rotatably connected to the steering head pin 60 via a splined connection 65. Turning of the front wheel or the handlebars connected to the crown pieces 62, 63 therefore leads to turning of the spindle 54 together with the wings 55 with respect to the housing 51 together with the separating projections 56.
  • Figs. 8 - 11 show a variant in which the steering damper comprises a casing part 80 of the housing, in which there is a recessed cylindrical chamber 81.
  • the chamber 81 is closed off at the topside by a cover part 82.
  • a spindle 83 with two wings 84 positioned diametrically opposite one another is mounted rotatably in the centre of the chamber 81.
  • the free ends of the wings 84 are provided with a seal 85, by means of which they bear rotatably in a sealing manner, against the circumferential wall of the chamber 81.
  • Two separating projections 86 are formed integrally in the casing part 80 of the housing. In the assembled state, the separating projections 86 bear in a substantially sealing manner against the cover part 82 and the circumferential wall of the spindle 83. As a result, in this case too the chamber 81 is divided into four compartments by the wings 84 and the separating projections 86.
  • the separating projections 86 are substantially symmetrical in form and are both provided with a continuous recess 90 which extends in the radial direction and in which an adjustable throttle element 91 is provided.
  • the throttle element 91 is in this case formed by a needle-shaped pin 92 accommodated in a sleeve-like holder 93.
  • the sleeve-like holder 93 is fixedly connected to the housing.
  • the pin 92 and the holder 93 are provided with complementary screw-thread parts, it being possible for the pin 92 to be moved back and forth in the said radial direction by means of the pin 92 being turned.
  • the pin 92 is provided at its free end with a recess in which a tool piece can engage.
  • each fluid passage 95 is in this case formed by two fluid passage parts 95a, 95b which are provided at different radii and each extend from opposite side wall parts of the separating projection 86.
  • the fluid passage parts 95a, 95b are in this case milled into the casing part 80 of the housing from above, but may also be provided in other ways and/or positions in the separating projections.
  • the fluid passage parts 95a, 95b are connected to one another by a section of the continuous recess 90 which extends in the radial direction and in which the adjustable throttle element 91 is provided. In this way, the fluid passages 95 can be throttled to a greater or lesser extent so as to adjust the level of damping.
  • the expansion reservoir 100 comprises a pot-shaped housing part 101 which extends downwards from the housing 80.
  • a separating piston 102 which can move up and down and on one side bears against the hydraulic fluid and on the other side bears against a compressible gas volume, is provided in the pot-shaped housing part 101.
  • the separating piston may also bear against a spring element on one side.
  • the expansion reservoir is in this case connected to the hydraulic chamber 81 by means of a passage 103 which is drilled into the housing and opens out into that section of the continuous recess 90 which forms the connection to the fluid passage parts 95a, 95b.
  • the fluid passages may also be provided at locations other than in the separating projections, for example in the housing wall.
  • the housing of the steering damper may be integrated in one of the two crown pieces and/or in part of the steering head.
  • the steering damper it is possible for the steering damper to be provided at a different position in or on the steering system, for example against the crown piece beneath it or between the crown piece beneath it and the steering head.
  • the hydraulic fluid with which the chamber in the housing is to be filled is formed, for example, by oil.
  • an electro-rheological or magneto-rheological fluid the flow properties of which can be altered by the influence of an electric or magnetic field. It is in this way possible to make the steering damper easy to adjust by electrical means.
  • the invention provides a steering damper of very compact construction which makes it possible to achieve high levels of damping.
  • the compactness advantageously enables the steering damper to be installed and/or integrated in a steering system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

L'invention concerne un amortisseur de direction pour motocycle, qui comprend : un logement (2) comportant une chambre hydraulique (3) conçue pour être remplie par un fluide hydraulique ; au moins une aile (7) qui tourne autour d'un axe (5) et qui divise la chambre (3) en compartiments s'étendant de chaque côté de l'aile (7) ; et au moins un passage (12) de fluide qui relie les compartiments les uns aux autres. La chambre (3) présente sensiblement une symétrie de révolution, l'axe (5) étant disposé au centre de celle-ci, une deuxième aile (7) étant en outre présente et pouvant tourner autour de l'axe (5). Cette deuxième aile, avec la première aile rotative (7) et au moins deux parties saillantes de séparation (8, 9) disposées en position fixe dans la chambre (3), divise ladite chambre (3) en au moins quatre compartiments, au moins deux de ces derniers étant pourvus de passages (12) de fluide reliant les compartiments les uns aux autres.
PCT/NL2004/000728 2003-10-17 2004-10-15 Amortisseur de direction pour motocycle WO2005035349A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1024569A NL1024569C2 (nl) 2003-10-17 2003-10-17 Stuurdemper voor een motorfiets.
NL1024569 2003-10-17

Publications (1)

Publication Number Publication Date
WO2005035349A1 true WO2005035349A1 (fr) 2005-04-21

Family

ID=34432167

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2004/000728 WO2005035349A1 (fr) 2003-10-17 2004-10-15 Amortisseur de direction pour motocycle

Country Status (2)

Country Link
NL (1) NL1024569C2 (fr)
WO (1) WO2005035349A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004054188A1 (de) * 2004-11-10 2006-05-11 Bayerische Motoren Werke Ag Motorrad mit Lenkungsdämpfer
WO2007070958A1 (fr) * 2005-12-23 2007-06-28 Mark Comming Amortisseur de direction
WO2008108727A1 (fr) * 2007-03-05 2008-09-12 öHLINS RACING AB Amortisseur d'aile avec équilibrage de pression
WO2008108731A1 (fr) * 2007-03-05 2008-09-12 öHLINS RACING AB Amortisseur de direction et dispositif pour monter un amortisseur de direction
ITFI20120151A1 (it) * 2012-07-18 2014-01-19 Univ Firenze Serie sterzo per motocicli integrante mezzi ammorzatori di sterzo
EP2990685A1 (fr) * 2014-08-26 2016-03-02 Canyon Bicycles GmbH Élement de velo
DE102018124242A1 (de) * 2018-10-01 2020-04-02 Gröbner Fertigungs GmbH Hydraulischer Rotationslenkungsdämpfer eines Fahrzeuges
CN112896401A (zh) * 2021-03-17 2021-06-04 浙江春风动力股份有限公司 一种摩托车转向系统

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB432643A (en) * 1934-01-31 1935-07-31 Lucas Ltd Joseph Improvements relating to shock absorbers for road vehicles
JPS6212467A (ja) * 1985-07-10 1987-01-21 Honda Motor Co Ltd ステアリングダンパ−
EP0240499A1 (fr) 1984-11-28 1987-10-14 Albertsson Per Hakan Dispositif amortisseur hydraulique.
EP0695683A1 (fr) * 1994-08-04 1996-02-07 StableTec, Inc. Amortisseur de direction pour bicyclettes
US5492033A (en) * 1994-01-03 1996-02-20 Hopey; Timothy C. Steering damper in and for vehicles
US6464050B2 (en) * 2000-11-03 2002-10-15 Delphi Technologies, Inc. Magneto-rheological steering damper
JP2003056620A (ja) * 2001-08-17 2003-02-26 Somic Ishikawa Inc ロック機能を有するロータリーダンパ
US20030111308A1 (en) * 2001-12-17 2003-06-19 Vanvalkenburgh Charles Nicholas Rotary damper
EP1323946A1 (fr) * 2001-12-28 2003-07-02 Honda Giken Kogyo Kabushiki Kaisha Amortisseur pour guidon
EP1375328A1 (fr) * 2002-06-21 2004-01-02 Kayaba Industry Co., Ltd. Dispositif de direction

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB432643A (en) * 1934-01-31 1935-07-31 Lucas Ltd Joseph Improvements relating to shock absorbers for road vehicles
EP0240499A1 (fr) 1984-11-28 1987-10-14 Albertsson Per Hakan Dispositif amortisseur hydraulique.
JPS6212467A (ja) * 1985-07-10 1987-01-21 Honda Motor Co Ltd ステアリングダンパ−
US5492033A (en) * 1994-01-03 1996-02-20 Hopey; Timothy C. Steering damper in and for vehicles
EP0695683A1 (fr) * 1994-08-04 1996-02-07 StableTec, Inc. Amortisseur de direction pour bicyclettes
US6464050B2 (en) * 2000-11-03 2002-10-15 Delphi Technologies, Inc. Magneto-rheological steering damper
JP2003056620A (ja) * 2001-08-17 2003-02-26 Somic Ishikawa Inc ロック機能を有するロータリーダンパ
US20030111308A1 (en) * 2001-12-17 2003-06-19 Vanvalkenburgh Charles Nicholas Rotary damper
EP1323946A1 (fr) * 2001-12-28 2003-07-02 Honda Giken Kogyo Kabushiki Kaisha Amortisseur pour guidon
EP1375328A1 (fr) * 2002-06-21 2004-01-02 Kayaba Industry Co., Ltd. Dispositif de direction

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 011, no. 183 (M - 598) 12 June 1987 (1987-06-12) *
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 06 3 June 2003 (2003-06-03) *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004054188A1 (de) * 2004-11-10 2006-05-11 Bayerische Motoren Werke Ag Motorrad mit Lenkungsdämpfer
WO2006050809A1 (fr) * 2004-11-10 2006-05-18 Bayerische Motoren Werke Aktiengesellschaft Moto equipee d'un amortisseur de direction
WO2007070958A1 (fr) * 2005-12-23 2007-06-28 Mark Comming Amortisseur de direction
WO2008108727A1 (fr) * 2007-03-05 2008-09-12 öHLINS RACING AB Amortisseur d'aile avec équilibrage de pression
WO2008108731A1 (fr) * 2007-03-05 2008-09-12 öHLINS RACING AB Amortisseur de direction et dispositif pour monter un amortisseur de direction
US7891681B2 (en) 2007-03-05 2011-02-22 Ohlins Racing Ab Steering damper and device for mounting a steering damper
ITFI20120151A1 (it) * 2012-07-18 2014-01-19 Univ Firenze Serie sterzo per motocicli integrante mezzi ammorzatori di sterzo
WO2014013435A1 (fr) 2012-07-18 2014-01-23 Universita' Degli Studi Di Firenze Tête de direction pour motocyclette intégrant des moyens d'amortissement de direction
JP2015524764A (ja) * 2012-07-18 2015-08-27 ユニバーシタ’デグリ ストゥディ ディ フィレンツェ ステアリング制動手段一体型自動二輪車用ステアリングヘッド
US9399495B2 (en) 2012-07-18 2016-07-26 Universita Degli Studi Di Firenze Steering head for motorcycles integrating steering damping means
EP2990685A1 (fr) * 2014-08-26 2016-03-02 Canyon Bicycles GmbH Élement de velo
DE102018124242A1 (de) * 2018-10-01 2020-04-02 Gröbner Fertigungs GmbH Hydraulischer Rotationslenkungsdämpfer eines Fahrzeuges
DE102018124242B4 (de) * 2018-10-01 2021-03-25 Gröbner Fertigungs GmbH Hydraulischer Rotationslenkungsdämpfer eines Fahrzeuges
CN112896401A (zh) * 2021-03-17 2021-06-04 浙江春风动力股份有限公司 一种摩托车转向系统
CN112896401B (zh) * 2021-03-17 2022-07-26 浙江春风动力股份有限公司 一种摩托车转向系统

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