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DE102005025811A1 - Electronically controlled/regulated chassis for e.g. bicycle, has sensors measuring front wheel oscillating systems acceleration and chassis`s body acceleration, and adjusting damping coefficients of wheel damping unit or rear damper - Google Patents

Electronically controlled/regulated chassis for e.g. bicycle, has sensors measuring front wheel oscillating systems acceleration and chassis`s body acceleration, and adjusting damping coefficients of wheel damping unit or rear damper Download PDF

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Publication number
DE102005025811A1
DE102005025811A1 DE102005025811A DE102005025811A DE102005025811A1 DE 102005025811 A1 DE102005025811 A1 DE 102005025811A1 DE 102005025811 A DE102005025811 A DE 102005025811A DE 102005025811 A DE102005025811 A DE 102005025811A DE 102005025811 A1 DE102005025811 A1 DE 102005025811A1
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Prior art keywords
chassis
acceleration
damping
front wheel
electronically controlled
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DE102005025811A
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German (de)
Inventor
Thomas Kamm
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Kamm Thomas Dipl-Wirtsch-Ing (fh)
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Kamm Thomas Dipl-Wirtsch-Ing (fh)
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Classifications

    • 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
    • B62K25/00—Axle suspensions
    • B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/016—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
    • B60G17/0165—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input to an external condition, e.g. rough road surface, side wind
    • 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
    • B62K25/00—Axle suspensions
    • B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
    • B62K25/12—Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg
    • B62K25/22—Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg with more than one arm on each fork leg
    • B62K25/24—Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg with more than one arm on each fork leg for front wheel
    • 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
    • B62K25/00—Axle suspensions
    • B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
    • B62K25/28—Axle suspensions for mounting axles resiliently on cycle frame or fork with pivoted chain-stay
    • B62K25/286—Axle suspensions for mounting axles resiliently on cycle frame or fork with pivoted chain-stay the shock absorber being connected to the chain-stay via a linkage mechanism
    • 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
    • B62K25/00—Axle suspensions
    • B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
    • B62K2025/044—Suspensions with automatic adjustment

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The chassis has acceleration sensors (8, 9) to measure vertical acceleration of oscillating systems of a front wheel and body acceleration of the chassis. A controller or an electronic control unit (2) detects driving condition by considering difference between the vertical and body accelerations. The sensors use the acceleration as a measurand in the controller or the control unit for adjusting damping coefficients of a front wheel damping unit or a rear damper (4).

Description

Allgemeines.General.

Moderne Fahrräder werden wie Kraftfahrzeuge zur Erhöhung der Fahrsicherheit und des Komforts mit Feder-Dämpferelementen an der Vorderradwie auch Hinterradführungen ausgestattet. Die für Fahrräder durch das Einbringen der Antriebskraft über Kurbelarme als ungleichmäßig großes Drehmoment entstehenden Nickbewegungen und Interaktionen von Antrieb und Federsystemen werden auf unterschiedlichste Weise versucht zu reduzieren.modern Cycles be like motor vehicles to increase driving safety and comfort with spring-damper elements equipped on the front wheel as well as rear wheel guides. The for bikes through the introduction of the driving force via crank arms as unevenly large torque resulting pitching motions and interactions of the drive and spring systems are trying in many different ways to reduce.

Die Anforderungen an die Fahrwerke von Fahrrädern sowie dies bezügliche Ausführungen sind in einer großen Zahl von Veröffentlichungen und wissenschaftliche Arbeiten [z.B. 1,5] und Patenten insbesondere für Kraftfahrzeuge ausführlich beschrieben. Zu den Anforderungen gehörten und gehören sowohl höherer Fahrkomfort, als auch erhöhte Fahrsicherheit. Dabei wird im Bereich des Sports eine erreichte höhere Fahrsicherheit i.a. umgehend für höhere Geschwindigkeiten genutzt. Die erwähnten Forderungen sind relativ unspezifisch. Sie werden im weiteren Verlauf der hier beschriebenen Neuerung für Zweiräder (wie das Fahrrad) genauer definiert. Die genannten Forderungen wurden auch in der Vergangenheit durch bessere Radführungen, gute Federungen mit dazugehörigen Dämpfungen sowie Verminderung der Spitzenlasten auf umgebende Bauteile erreicht. Die vorgestellte Neuerung soll die Vorteile einer sicheren und komfortablen Federung mit dem Vorteil einer nickfreien ungefederten Lösung verbinden.The Requirements for the chassis of bicycles and related versions are in a big one Number of publications and scientific papers [e.g. 1.5] and patents in particular for motor vehicles in detail described. The requirements included and are both higher Ride comfort, as well as increased Driving safety. This is achieved in the field of sports one higher Driving safety i.a. promptly for higher Speeds used. The mentioned demands are relative nonspecific. They will be described later Innovation for Bikes (like the bike) defined more precisely. The mentioned demands were also in the past by better wheel guides, good suspensions with associated losses and reducing peak loads on surrounding components. The presented innovation is intended to provide the benefits of a safe and comfortable Connect suspension with the benefit of a nickfreie unsprung solution.

Für die Abstimmung eines Feder-Dämpfersystems können die gewünschten Eigenschaften Komfort, Fahrsicherheit, reaktionsfreier Antrieb nur als suboptimales System erzielt werden. So wird bei Erhöhung der Dämpfung zwar die Neigung zu Nickbewegungen reduziert, das Ansprechverhalten und damit der Komfort aber auch verschlechtert.For the vote a spring-damper system can the desired Features comfort, driving safety, non-reactive drive only as suboptimal system can be achieved. So will increase the damping while reducing the tendency to pitching, the response and thus the comfort but also worsened.

Das Ziel für eine Optimierung der Dämpfungseigenschaften ist es, in der jeweiligen Fahrsituation die Dämpfung an die äußeren Bedingungen anzupassen.The Goal for an optimization of the damping properties is it, in the respective driving situation, the damping to the external conditions adapt.

Eine Möglichkeit, diese Optimierung vorzunehmen wird von dem US-Bikehersteller Spezialized mit dem System „brain" realisiert [4]. Hier wird durch ein Massenträgheitsventil, welches durch Beschleunigung des Hinterrades bei Auftreffen auf ein Hindernis aktiviert wird, die Druckstufendämpfung reduziert, um das Ansprechverhalten zu verbessern. Ohne Fahrbahnunebenheiten wird das System wieder überdämpft, um Nickbewegungen zu unterdrücken. Der Nachteil dieses Systems ist, dass es zur Aktivierung diesen „Initialstoß" benötigt, der jedoch praktisch ungefiltert auf den Fahrer übertragen wird. Dies birgt neben einer Gefährdung von Material und Fahrer auch die permanente Verunsicherung des Fahrers in sich, nicht zu wissen, ob bei einem zu erwartenden Stoß das Ventil nun öffnet oder nicht. Einen ähnlichen Weg geht die Fa. Fox mit dem System „Terralogic" [3].A Possibility, To make this optimization is realized by the US bike manufacturer Spezialized with the system "brain" [4]. Here is by an inertia valve, which by acceleration of the rear wheel when hitting an obstacle is activated that reduces compression damping to reduce the response to improve. Without road bumps, the system is again overdamped to To suppress pitching movements. Of the Disadvantage of this system is that it needs to activate this "initial shock", the However, virtually unfiltered is transmitted to the driver. This holds next to a hazard Material and driver also the permanent uncertainty of the driver in itself, not knowing if at an expected shock the valve now opens or not. A similar one Way goes the company Fox with the system "Terralogic".

Eine weitere Lösung bieten die sog. „Plattformdämpfer" an [3]. Auch hier wird versucht, nur bei Auftreten einer plötzlichen Anregung durch Fahrbahnunebenheiten ein sensibles Ansprechen zu erhalten, bei geringer Anregung eine erhöhte Dämpfung beizubehalten. Hauptvertreter dieser Technologie ist das SPV-System der Fa. Manitou [3]. Hier wird eine Steuerung der sog. High-Speed-Dämpfung und Low-Speed-Dämpfung vorgenommen: Bei High-Speed-Anregung wird die Dämpfung reduziert, bei Low-Speed-Anregung wird die Dämpfung erhöht.A another solution offer the so-called "platform damper" to [3]. Also here is attempted only when a sudden excitation due to road bumps occurs to receive a sensitive response, with low suggestion one increased damping maintain. The main representative of this technology is the SPV system the Fa. Manitou [3]. Here, a control of the so-called. High-speed damping and low-speed damping is made: At high-speed excitation is the damping reduced, with low-speed excitation, the damping is increased.

Die Firma Shimano hat mit dem Alltagsfahrrad „Smover" [2] ebenfalls eine Steuerung der Dämpfung des Hinterbaudämpfers realisiert, hierbei wird die Geschwindigkeit als Messgröße genutzt. Bei niedrigen Geschwindigkeiten wird die Dämpfung erhöht, bei hohen Geschwindigkeiten reduziert. Das Problem hierbei ist, dass auch bei kleinen Geschwindigkeiten besonders im innerstädtischen Einsatz (Bordsteine) und bei langsamen Bergauffahrten in unebenem Gelände ein gutes Ansprechen ohne Überdämpfung erwünscht ist.The Company Shimano has with the everyday bike "Smover" also a control of the damping of the rear shock realized, here the speed is used as a measure. At low speeds, the damping is increased, at high speeds reduced. The problem here is that even at low speeds especially in the inner city Use (curbs) and on slow uphill driving in uneven terrain a good response without over-damping is desired.

Die Fa. Noleen hat Ende der 90er Jahre den sog. Smart-Shock-Dämpfer auf den Markt gebracht, in dem durch Messung der Anregungsbeschleunigung am Dämpfer die Dämpfung angepasst werden sollte. Es wurde jedoch nicht bereits vor dem Ereignis des Stoßes eine Steuerung vorgenommen. Das System hat sich allerdings nicht bewährt und wurde bereits wieder vom Markt genommen.The Fa. Noleen has the so-called smart-shock damper at the end of the 90s brought into the market, in which by measuring the excitation acceleration on the damper the damping should be adjusted. However, it was not already before the event of shock a control made. The system has not proven and has already been withdrawn from the market.

Wie einführend erwähnt, führen alle technischen Lösungsansätze zu suboptimalen Ergebnissen, wobei in der Hauptsache das sensible Ansprechen der Dämpferelemente durch Erhöhung der Dämpfung, insbesondere der Druckstufendämpfung, reduziert wird. Diese Komforteinbuße kann dabei permanent oder bei Einzelstößen vorhanden sein. Ebenfalls führen konstruktive Notwendigkeiten zu einem höheren technischen Aufwand für die zu verwendende Feder- Dämpfungselemente.As introductory mentioned, to lead all technical solutions to suboptimal Results, with the sensitive response of the damper elements by raising the damping, especially the compression damping, reduced becomes. This loss of comfort can be permanent or in case of single impacts. Also to lead constructive necessities for a higher technical effort for the using spring-damping elements.

Neuerung:Innovation:

Die hier vorzustellende Neuerung wendet eine mechatronische [6] Lösung an, wie sie im Bereich von Zweirädern insbesondere von Fahrrädern noch nicht bekannt ist. Das grundlegende Prinzip ist die Messung (Detektierung) spezieller Fahrzustände und Ereignisse, woraus eine elektronische Steuerung und oder Regelung über eine Aktorik eine Ventilverstellung zur Veränderung der Dämpfungskoeffizienten hydraulischer Dämpferelemente ableitet und initiiert.The innovation presented here uses a mechatronic [6] solution as described in Be rich of two-wheelers, especially bicycles is not yet known. The basic principle is the measurement (detection) of special driving conditions and events, from which an electronic control and / or control via an actuator system derives and initiates a valve adjustment for changing the damping coefficients of hydraulic damper elements.

Sensorik:sensors:

Für die Funktion der Neuerung ist die Messung der Beschleunigung der Vorderachse (ungefederte Masse) die wichtigste Größe. Ein Beschleunigungssensor gemäß Stand der Technik ist für einen in der Praxis sinnvollen Messbreich (z.B. bis 10g) zu verwenden. Des Weiteren können die Aufbaubeschleunigung (gefederte Masse), die Geschwindigkeit, die Trittfrequenz, der Dämpferhub bzw. die Dämpferposition detektiert werden.For the function The innovation is the measurement of the acceleration of the front axle (unsprung mass) the most important size. An acceleration sensor as per stand the technology is for to use a practical measuring range (for example up to 10 g). Furthermore you can the body acceleration (sprung mass), the speed, the cadence, the damper stroke or the damper position be detected.

Aktorik:actuators:

Die Aktorik kann aus Bauteilen gemäß Stand der Technik bestehen. Hierbei können rotatorisch arbeitende Motoren, Linearmotoren oder auch Magnetventile zum Einsatz kommen.The Actuators can be made of components according to the state of Technology exist. Here you can Rotary motors, linear motors or solenoid valves be used.

Logik:Logic:

In erster Linie wird ein in punkto Ansprechverhalten und Kennlinie kompromisslos abgestimmter Dämpfer eingesetzt. Dieser Dämpfer wird nur bei Auftreten eines Stoßes aktiviert, während der stoßfreien Fahrt z.B. auf Asphalt oder gut befestigten Feldwegen bleibt er blockiert und oder überdämpft und erzielt dadurch eine wippfreie Fahrt. Durch einen Beschleunigungssensor an der Vorderachse wird festgestellt, wenn ein Hindernis überfahren wird und innerhalb von Sekundenbruchteilen der Hinterbaudämpfer aktiviert. Das Prinzip ist: Nach einem Stoß vorne folgt zeitverzögert der Stoß hinten. Bei 30km/h ist z.B. die Zeitdauer, die von Vorderrad zu Hinterrad verstreicht 0,13 Sekunden, wie in 1 dargestellt. Das System öffnet die Ventile des Hinterbaudämpfers bei Verwendung von Aktoren gemäß Stand der Technik in Bruchteilen dieser Zeit. Die weitergehende Logik der Regelung der Vorderraddämpfung detektiert den sog. „Wiegetritt", welcher zu starken Nickbewegungen der Vorderradfederung führt. Hierfür werden Aufbaubeschleunigung sowie die Beschleunigung der ungefederten Masse der Vorderradfederung miteinander verglichen. Bei einer starken Aufbaubeschleunigung bei gleichzeitig geringer Beschleunigung der ungefederten Masse der Vorderradfederung wird dann der Wiegetritt erkannt und die Vorderraddämpfung erhöht.First and foremost, a shock absorber that is uncompromisingly matched in terms of response and characteristics is used. This damper is activated only when a shock occurs, while the bumpless ride, for example, on asphalt or well-paved dirt roads it remains blocked and or overdamped, thereby achieving a rocker-free ride. An acceleration sensor on the front axle detects when an obstacle is overrun and activates the rear bumper within fractions of a second. The principle is: After a shock in front followed by a delay with the shock behind. At 30km / h, for example, the time that elapses from front wheel to rear wheel is .13 seconds, as in 1 shown. The system opens the valves of the rear shock absorber when using actuators according to the prior art in fractions of this time. The more advanced system of front suspension control detects the so-called "footstep" which causes the front suspension to pitch heavily, comparing the body acceleration with the acceleration of the unsprung mass of the front wheel suspension and the acceleration of the unsprung mass of the front wheel suspension then the bump is detected and increases the front wheel damping.

Zum besseren Verständnis soll eine Prinzipskizze die Funktion erläutern:To the better understanding should a schematic outline explain the function:

2 zeigt die Skizze eines handelsüblichen Mountainbikes ausgerüstet mit der vorgestellten Neuerung. 2 shows the sketch of a standard mountain bike equipped with the presented innovation.

Das System besteht aus folgenden Elementen: Der Beschleunigungssensor (1) detektiert einen Stoß an der Vorderachse. Dieses Signal wird an die Steuereinheit (2) weitergegeben. Dort wird festgestellt, ob ein voreinstellbarer Schwellwert überschritten wird. Die Steuereinheit (2) sendet daraufhin den Befehl zum Öffnen der Dämpfung an den Aktor (3) der hinteren Dämpfereinheit (4). Die dadurch geöffneten Ventile geben die Dämpfungsventile des Hinterbaudämpfers (4) frei.The system consists of the following elements: The acceleration sensor ( 1 ) detects a shock at the front axle. This signal is sent to the control unit ( 2 ). There it is determined whether a presettable threshold is exceeded. The control unit ( 2 ) then sends the command for opening the damping to the actuator ( 3 ) of the rear damper unit ( 4 ). The valves opened thereby give the damper valves of the rear bumper ( 4 ) free.

An der Bedieneinheit (5) können unterschiedliche Betriebsmodi vom Anwender bequem während der Fahrt eingestellt werden. Es kann z.B. auch die Sensibilität der Beschleunigungssensoren variiert werden. Im Falle des Wiegetrittes detektieren der Sensor (8) der ungefederten Masse der Vorderradschwinge (9) sowie der Sensor (7) der Aufbaubeschleunigung unterschiedliche Werte. Die Spannungsversorgung kann separat untergebracht werden oder aber im Bedienteil (5) oder in der Steuereinheit integriert sein.At the control unit ( 5 ) different operating modes can be conveniently set by the user while driving. It is also possible, for example, to vary the sensitivity of the acceleration sensors. In the case of a footstep, the sensor detects ( 8th ) of the unsprung mass of the front swingarm ( 9 ) as well as the sensor ( 7 ) of the body acceleration different values. The power supply can be accommodated separately or in the control panel ( 5 ) or integrated in the control unit.

Literatur:Literature:

  • [1] Betriebslastenermittlung, Dimensionierung, strukturmechanische Untersuchungen von Mountainbikes, Eric Groß, VDI Verlag Reihe 12 Nr. 308[1] determination of operating loads, dimensioning, structural mechanics Examinations of mountain bikes, Eric Groß, VDI Verlag Reihe 12 Nr. 308
  • [2] Trekkingbike Ausgabe 1/2004 Januar-Februar[2] Trekkingbike issue 1/2004 January-February
  • [3] Mountain BIKE, Sport + Freizeit Verlag GmbH & Co. KG, Stuttgart, Ausgabe 07/2003[3] Mountain BIKE, Sport + Leisure Publishing GmbH & Co. KG, Stuttgart, Issue 07/2003
  • [4] Bike Sport News, Bielefelder Verlagsanstalt GmbH & Co. KG, Ausgabe 08/2002[4] Bike Sport News, Bielefeld Publishing Company GmbH & Co. KG, edition 08/2002
  • [5] Kinematische und kinetische Untersuchungen von Mountainbike-Hinterrradfederungen, Hendrik Sell, Kleine Studienarbeit, Konstruktionstechnik II, Techn. Universität Hamburg-Harburg[5] Kinematic and kinetic studies of mountain bike rear suspension, Hendrik Sell, Small Study Project, Design Engineering II, Technical University Hamburg-Harburg
  • [6] Mechatronik, Heimann/Gert/Popp, Fachbuchverlag Leipzig[6] Mechatronics, Heimann / Gert / Popp, book publisher Leipzig

Claims (3)

Elektronisch gesteuertes und oder geregeltes Fahrwerk für Fahrräder, dadurch gekennzeichnet, dass mittels Sensorik die Vertikalbeschleunigung des Schwingsystems des Vorderrades (ungefederte Masse) gemessen wird und in einer Steuerung oder Regelung als Messgröße für die Einstellung des Dämpfungskoeffizienten des Hinterbaudämpfers genutzt wird.Electronically controlled and or controlled chassis for bicycles, characterized in that the vertical acceleration of the oscillating system of the front wheel (unsprung mass) is measured by means of sensors and is used in a control or regulation as a parameter for adjusting the damping coefficient of the rear shock absorber. Elektronisch gesteuertes und oder geregeltes Fahrwerk für Fahrräder nach Anspruch 1, dadurch gekennzeichnet, dass mittels Sensorik die Aufbaubeschleunigung (gefederte Masse) am Fahrwerk gemessen wird und in einer Steuerung und oder Regelung durch Berechnungen eine Detektierung des Fahrzustandes „Wiegetritt" durch Differenzbetrachtung Aufbaubeschleunigung zu Vorderachsbeschleunigung (ungefederte Masse) erfolgt und als Messgröße zur Einstellung des Dämpfungskoeffizienten der Vorderraddämpfereinheit und oder des Hinterbaudämpfers genutzt wird.Electronically controlled and or controlled chassis for bicycles Claim 1, characterized in that by means of sensors, the body acceleration (sprung mass) is measured on the chassis and in a control and or regulation by calculations a detection of the driving state "saddle" by difference consideration Body acceleration to Vorderachsbeschleunigung (unsprung mass) takes place and as a measured variable for adjustment the damping coefficient the front shock absorber unit and or the rear muddler is being used. Elektronisch gesteuertes und oder geregeltes Fahrwerk für Fahrräder gemäß Anspruch 1 und 2, dadurch gekennzeichnet, dass weitere Messgrößen erfasst und zur Berechnung für die Ermittlung gewünschter Dämpfungskoeffizienten der Vorderraddämpfereinheit und oder des Hinterbaudämpfers genutzt werden.Electronically controlled and or controlled chassis for bicycles according to claim 1 and 2, characterized in that further measured variables detected and for the calculation for the determination of desired damping coefficient the front shock absorber unit and or the rear muddler be used.
DE102005025811A 2005-06-02 2005-06-02 Electronically controlled/regulated chassis for e.g. bicycle, has sensors measuring front wheel oscillating systems acceleration and chassis`s body acceleration, and adjusting damping coefficients of wheel damping unit or rear damper Withdrawn DE102005025811A1 (en)

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EP2842854A1 (en) * 2013-08-28 2015-03-04 Tenneco Marzocchi S.r.l. Electronic suspension system for a bicycle
EP2620303B1 (en) * 2009-05-04 2015-05-13 Fox Factory, Inc. Suspension System for a Vehicle
US10036443B2 (en) 2009-03-19 2018-07-31 Fox Factory, Inc. Methods and apparatus for suspension adjustment
US10086670B2 (en) 2009-03-19 2018-10-02 Fox Factory, Inc. Methods and apparatus for suspension set up
US10145435B2 (en) 2009-03-19 2018-12-04 Fox Factory, Inc. Methods and apparatus for suspension adjustment
US10336149B2 (en) 2009-01-07 2019-07-02 Fox Factory, Inc. Method and apparatus for an adjustable damper
US10414236B2 (en) 2009-03-19 2019-09-17 Fox Factory, Inc. Methods and apparatus for selective spring pre-load adjustment
US10472013B2 (en) 2008-11-25 2019-11-12 Fox Factory, Inc. Seat post
US10537790B2 (en) 2008-11-25 2020-01-21 Fox Factory, Inc. Methods and apparatus for virtual competition
US10550909B2 (en) 2008-08-25 2020-02-04 Fox Factory, Inc. Methods and apparatus for suspension lock out and signal generation
US10670106B2 (en) 2009-01-07 2020-06-02 Fox Factory, Inc. Method and apparatus for an adjustable damper
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