WO2015028510A1 - Système de suspension et bicyclette équipée d'un tel système - Google Patents

Système de suspension et bicyclette équipée d'un tel système Download PDF

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Publication number
WO2015028510A1
WO2015028510A1 PCT/EP2014/068174 EP2014068174W WO2015028510A1 WO 2015028510 A1 WO2015028510 A1 WO 2015028510A1 EP 2014068174 W EP2014068174 W EP 2014068174W WO 2015028510 A1 WO2015028510 A1 WO 2015028510A1
Authority
WO
WIPO (PCT)
Prior art keywords
spring
suspension
spring body
main frame
clamping
Prior art date
Application number
PCT/EP2014/068174
Other languages
German (de)
English (en)
Inventor
Wolfgang KLEPFER
Konrad Irlbacher
Luca BURZIO
Original Assignee
Iko Sportartikel-Handels-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 Iko Sportartikel-Handels-Gmbh filed Critical Iko Sportartikel-Handels-Gmbh
Publication of WO2015028510A1 publication Critical patent/WO2015028510A1/fr

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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
    • 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

Definitions

  • the present invention relates to a suspension assembly for a bicycle having a rear suspension pivotally hinged to a main frame and articulated at a pivot point to a first end of a damper assembly articulated at a second end to the main frame and operative between the main frame and rear suspension.
  • the rear suspension serves as a rocker, which is accommodated with one end - usually at a pivot point or via a coupling member near the bottom bracket - in the main frame.
  • the rocker is further coupled via a damper assembly with the main frame, which acts between the rear suspension and the main frame. It may also be a rocker arm (so-called. "Rocker”) may be provided, which is hinged to the main frame and acts between the rear suspension and damper assembly.
  • damper assembly are usually used hydraulically damped gas springs whose spring properties on the pressure setting in a variable Luffhunt and their damper properties via hydraulic valves are adjustable.
  • Other known damper arrangements are similar to the well-known from the vehicle spring / damper combinations in which, for example, within a coil spring, a fluid damper is arranged.
  • shock absorber arrangements of bicycles these are articulated in damper eyes on the frame, on the rocker arm or on an auxiliary frame (rear suspension or rocker arm).
  • pedelecs and heavy e-bikes act relatively high forces in these damper eyes, and in particular intermittently.
  • suitable sliding bearing pairings are usually used here for impact loads, in which an axis is rotatably received in a bearing bush.
  • a bearing bush In order to increase the resistance to shock loads in these bearing points, close fits between the plain bearing bush and the possible backlash-free axis are helpful.
  • the axle pivots in its bearing bush on the bearing eyes.
  • the tight fit required for the impact resistance and thus for a long service life causes static friction, which must be overcome in these bearing points for pivoting.
  • the static friction to be overcome impairs undisturbed compression and rebound.
  • it is possible to use comparatively impact-sensitive rolling bearings whose life is limited because of the high point or line loads.
  • plain bearings with small and highly curved sliding surfaces ie with a small diameter of the bearing axes and bearing bushes, the static friction is reduced. But the load-related voltage peaks in such bearings are increased, which reduces their life.
  • the static friction additionally causes a transverse force on the damping arrangement acting between two articulation points and in particular on the guide surfaces sliding thereinto, telescopically operating in one another.
  • static friction effects which can additionally negatively influence the spring / damper behavior, can also be caused on these guide surfaces (pistons, cylinders) themselves.
  • the object of the present invention is to provide an improved suspension arrangement for a bicycle in which the problems described above are at least partially eliminated and at the same time the existing and sophisticated technology of available damper arrangements for common and proven bicycle frame designs can be used.
  • the present invention provides a suspension assembly for a bicycle having a rear suspension with a dropout pivotally hinged to a main frame, a rocker arm articulated to the rear suspension at a first articulation point, articulated to a second articulation point the first end of a damper assembly and articulated at a third pivot point on the main frame, wherein the damper assembly is articulated at a second end hingedly to the main frame and so acts between the main frame and rear suspension, the damper assembly having a first and a second spring element acting in series and the second spring element is designed as a spring body assembly, which connects the first spring element elastically articulated with a crosspoint on the main frame and / or at the second pivot point of the rocker arm.
  • the present invention provides a suspension assembly for a bicycle having a rear suspension with a dropout pivotally hinged to a main frame, a damper assembly hinged at a first end to the rear suspension, hinged at a second end to the main frame is and acts between the main frame and rear suspension, wherein the damper assembly comprises a first and a second spring element acting in series and the second spring element is designed as a spring body assembly, the first spring element elastically-hinged with a cross-point on the main frame and / or on the rear suspension combines.
  • Figure 1 is a side view of a main bicycle frame with a hinged rear suspension with dropouts, which are coupled together via a suspension arrangement according to the invention.
  • FIG. 2 shows a damper arrangement in the spring-loaded position for a suspension arrangement according to the invention according to FIG. 1;
  • FIG. 3 shows the damper arrangement shown in FIG. 2 in the spring-loaded position
  • Fig. 5 is a sectional view with alternative spring bodies
  • Fig. 6 is a sectional view with fluid-filled spring bodies
  • Fig. 7 is a spring body assembly with an annular spring body
  • the spring body assembly which connects the first spring element elastically-hinged with a crosspoint on the bicycle frame or at the second end of the rocker arm or even with the rear suspension, replaces the usual coupling via bearing eyes (axle, bushing).
  • spring element designates here not only pure spring elements (eg, coil springs, leaf springs) but also those assemblies that have combined spring / damper properties, so for example, gas spring elements or spring-damper combinations.
  • the properties of such spring elements can be optimally utilized by means of the special spring body arrangement.
  • the elasto-jointed coupling prevents the undesirable static friction effects that occur in the conventional articulation of the spring element, both in the Anlenkaugen (omitted in the inventive solution) and in the first spring element itself, since the friction-increasing transverse forces are reduced.
  • a second positive effect is that even high-frequency shocks with low amplitudes that are not or only insufficiently sprung from the conventional spring elements or
  • the hydraulic resistance of the shock absorber can now be tuned much tighter with the same absorption capacity of the road bumps and drive influences such as rockers are filtered out efficiently.
  • the added resilience of the spring bodies e.g., rubber or elastomeric members
  • a first and second spring body is biased by a clamping arrangement against a disposed between the first and the second spring body support member which forms the crosspoint.
  • the spring / damping properties of the spring body assembly can be adjusted by appropriate bias. At the same time such an arrangement causes a spring action in the spring body assembly during both compression and rebound.
  • the coupling to the first spring element via a first clamping plate which is coupled via a clamping element with a second clamping plate, between which the spring body are arranged, and together form the clamping arrangement.
  • About the clamping plates can be applied by means of the clamping element, a bias on the spring body assembly.
  • the effective length of the clamping element and thus the maximum distance of the clamping plates to each other via a threaded arrangement is adjustable, so that the clamping plates exert an adjustable biasing force on the spring body.
  • the spring / damping properties are adjustable in a simple and reproducible manner.
  • the support element is designed as a support plate on the opposite surfaces of which bear the spring body.
  • This arrangement uses in a similar manner as in the discussed clamping plates, the specific properties of elastomeric materials, which can accommodate high loads especially in area-wide pressure forces.
  • the support plate has an opening which is penetrated by the pin-shaped clamping element with a radial play. This allows for a compact Construction, since the clamping element runs inside the actual spring body assembly, and on the other hand ensures the radial clearance that in addition to the linear spring characteristics (compression hose the articulation of the elastomer assembly is given, the main axis so readily to the desired adjustment angle (0 to 25 °, preferably 0 to 5 °) can be deflected (tilted).
  • the spring body are formed as a tubular body, in particular as a cylindrical tube body, which are coaxially penetrated by the clamping element with radial clearance S.
  • Such tubular bodies surround and protect the clamping element against possible damage and environmental influences.
  • the property of the spring bodies can be influenced via the pipe body geometry (wall thicknesses, wall shapes, special profiles, length of the pipe body).
  • the support plate and / or the clamping plates are provided with a radial centering element, which ensures the positioning (in particular the centering of the spring body) on the support plate or on the clamping plate.
  • a centering element can either be a centering collar acting on the outer edge or else a centering socket acting in the interior of the spring body.
  • such a centering element is formed as formed on the clamping plate, projecting into the spring body and the clamping element receiving threaded socket.
  • a centering element is formed on the support plate and / or the clamping plate, which is configured as the clamping element surrounding and projecting into the spring body guide sleeve.
  • the centering element which is designed as a centering or threaded base.
  • the spring bodies may have one of the following materials: PU, rubber materials, microcellular urrefhans, gases, liquids, silicones, fiber-reinforced materials.
  • the desired elastic and damping properties arise at Shore A hardnesses of 40 to 100.
  • the invention also relates to a bicycle with a suspension arrangement according to the invention.
  • Fig. 1 shows several components of a bicycle with a suspension arrangement according to the invention.
  • a main frame 1 which is formed in a conventional manner from a top tube 2, a down tube 3, a seat tube 4 and a control tube 5.
  • a dropout 11 connects the seat stays 7 and chain stays 8 rigidly together and forms with them a rocker (the rear suspension 6) with its pivot point in the swingarm bearing 10 (and at the articulation point 10a of the coupling member 9 in the illustrated four-link suspension).
  • the seat stays 7 run in a yoke around the seat tube and meet within the open triangle formed by the top tube 2, down tube 3 and seat tube 4.
  • the rear suspension 6 is hinged on the Wegsterben 7 at a first pivot point 12 of a rocker arm 13.
  • the rocker arm 13 is articulated with a second pivot point 14 to a damper assembly 15 and articulated with a third pivot point 16 on the top tube 2 of the main frame 1.
  • the (optional) rocker arm 13 is thus pivotally connected via the articulation points 12, 14 and 16 respectively to the rear suspension 6, the damper assembly 15 and the main frame 1 and changes its position depending on the pivot position of the rear suspension 6 in the swingarm bearing 10th
  • the damper arrangement 15 comprises a first spring element designed as a conventional gas pressure spring component 17 with hydraulic damping, which is coupled to the rocker arm 13 in the second point of articulation 14 via a rotary bearing (plain bearing with bearing axis rotatable in a bushing).
  • a rotary bearing plain bearing with bearing axis rotatable in a bushing
  • Fig. 2 shows the structure of the spring body assembly 18 in detail.
  • a first clamping plate 21 is connected with its end facing away from the spring body assembly 18 end face with the end of the gas spring member 17.
  • a threaded base 22 is formed, which is coupled via a threaded screw 23 designed as a clamping element with a second clamping plate 24.
  • the threaded screw 23 passes through the second clamping plate 24, which is supported on the head 25 of the threaded screw 23.
  • a first and second spring body 26, 27 are arranged coaxially with the threaded screw 23, which passes through them.
  • first and second spring body 26, 27 extends the support member 19 which is formed in the coupling region with the spring body 26, 27 disc-shaped as a support plate 28 having an opening 29 whose diameter is greater than the shank diameter of the threaded nut be 23, so that a radial clearance s between the shank of the threaded screw 23 and the inner surfaces of the opening 29 is made (play: s).
  • the spring body 26, 27 itself are formed as a cylindrical tube body, which are also penetrated by the threaded screw 23 with radial clearance S.
  • the distance between the first clamping plate 21 and the second clamping plate 24 can be shortened or extended. Thereby, the spring body can be biased (compressed), which then have a slightly spherical cross-section, as shown in Fig. 2, have.
  • Gas spring element 17 (first spring element) and the spring body assembly 18 (second spring element) act in series and are arranged coaxially to the axis of action 30 in a row. Due to the special construction of the spring body assembly 18, the articulation on the support element 19 or the support plate 28 and thus on the top tube 2 of the main frame 1 both spring-damping in the direction of the axis of action 30 and articulated (tilting the effective axis 30 in the region of the opening 29). , wherein the possible angular deflection ⁇ is defined by the design of the opening 29 and thus the available play s in this area.
  • the threaded socket 22 For centering the spring body 26 and 27 are used on the one hand, the threaded socket 22, an inner socket 31 on the second clamping plate 24 and on the end faces of the support plate 28 in the region of the opening 29 and the outer edges 32 on the first and second clamping plate 21, 24 and the outer edge the support plate 28.
  • These centering facilitate assembly and prevent the emigration of the spring body 26, 27 under load during operation by a positive coupling.
  • Fig. 3 shows the suspension arrangement in the spring-loaded position.
  • the rear suspension (6) (the rear swingarm) has the rocker arm 13 pivoted at the first pivot point 12 (approximately in arrow action) to the third pivot point 16 on the top tube 2 and the main frame 1 and thereby adjusted via the deflected second pivot point 14, the damper assembly 15.
  • the air spring component 17 was compressed (the piston was inserted into the cylinder and thereby compressed the gas volume).
  • first spring body 26 was compressed between the first clamping plate 21 and the disc 28 while the second spring body 27 could extend between the second clamping plate 24 and the support plate 28.
  • the distance between the clamping plates 21 and 24 remains constant.
  • This compression or expansion of the spring body 26, 27 and the air spring component 17 takes place axially along the axis of action 30, the other by the angle oc, the kinematics of the rocker arm 13 following, deflected from its original position (tilted) becomes. This tilting and the associated articulation is made possible and limited by the play s between the shank of the threaded screw 23 and the radial surface 29 of the opening 29.
  • Fig. 4 shows an embodiment in which a further spring body assembly 18 'is arranged at the other end of the air spring component.
  • a further spring body assembly 18 ' can be formed on the rocker arm 13 in a corresponding embodiment of the second pivot point 14.
  • Fig. 5 shows a chambered embodiment of the spring bodies 36, 37, which are each provided with an annular cavity 38.
  • the material properties and thus the spring and damping properties of the spring body 36, 37 can be influenced.
  • the cavities 38 with liquids or else with gases or else with other materials, such as. Elastomer foams are filled.
  • FIG. 6 shows a fluid filled spring body 46 having two inner chamber rings 47 whose inner spaces 47a are elastically compressible (e.g., gas filled, filled with elastomeric body) and two outer chamber rings 48, each forming a toric chamber 49 about the respective inner chamber ring 47.
  • the toric chambers 49 are filled with a hydraulic medium and are in communicating connection via one or more valves 50. Under load, the inner spaces deform 47a (elastic effect) and the toric chambers 49. In this case, hydraulic fluid flows throttled through the valves 50 between the chambers 49 back and forth, causing the damping effect.
  • Both the elastic and the damping effect are adjustable.
  • Fig. 7 shows an embodiment in which annular spring body 56 are provided which receive a bearing shaft 57 in bearing bushes 58 and coupled to the rocker arm 13 (longitudinal section a).
  • the damper assembly 15 is hinged.
  • the spring body offers both torsionally elastic properties during rotation of the rocker arm 13 relative to the damper arrangement (see illustration b) as well as linear elastic properties in the direction of action of the damper arrangement 15, i. in the direction of the axis 30 and transversely to the bearing axis 57 (see illustration c).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)

Abstract

L'invention concerne un système de suspension, destiné à une bicyclette, qui comprend une suspension arrière (6) possédant une extrémité de dégagement (11) montée de manière à pouvoir pivoter sur un cadre principal (1), un levier oscillant (13) monté articulé en un premier point d'articulation (12) sur la suspension arrière (6), en un deuxième point de guidage (14) sur une première extrémité d'un ensemble amortisseur (15) et en un troisième point de guidage (16) sur le cadre principal (1), l'ensemble amortisseur (15) étant monté articulé à une deuxième extrémité sur le cadre principal (1) et agissant entre le cadre principal (1) et la suspension arrière (6). Selon l'invention, l'ensemble amortisseur (15) comporte un premier et un second élément à ressort (17, 18) qui agissent en série et le second élément à ressort est configuré sous la forme d'un ensemble d'éléments à ressort (18) qui relie le premier élément à ressort (17) de manière élastique et articulée à un point de croisement (19) sur le cadre principal (1) et/ou sur le second point de guidage (14) du levier oscillant (13). L'invention concerne en outre une bicyclette équipée d'un tel système de suspension.
PCT/EP2014/068174 2013-08-28 2014-08-27 Système de suspension et bicyclette équipée d'un tel système WO2015028510A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013109342.6 2013-08-28
DE102013109342.6A DE102013109342A1 (de) 2013-08-28 2013-08-28 Federungsanordnung und Fahrrad mit einer solchen

Publications (1)

Publication Number Publication Date
WO2015028510A1 true WO2015028510A1 (fr) 2015-03-05

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PCT/EP2014/068174 WO2015028510A1 (fr) 2013-08-28 2014-08-27 Système de suspension et bicyclette équipée d'un tel système

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DE (1) DE102013109342A1 (fr)
WO (1) WO2015028510A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202200002561A1 (it) * 2022-02-11 2023-08-11 Agazzini & C S N C Leveraggio per bicicletta provvista di sospensione posteriore comprendente un elemento di collegamento del triangolo anteriore del telaio della bicicletta al triangolo posteriore del detto telaio
IT202200005708A1 (it) * 2022-03-23 2023-09-23 Wilier Triestina S P A Sistema di smorzamento delle vibrazioni per un telaio di bicicletta e telaio di bicicletta comprendente tale sistema di smorzamento
US11884359B2 (en) 2022-02-25 2024-01-30 Sram, Llc Bicycle suspension components
US12024257B2 (en) 2020-06-17 2024-07-02 Sram, Llc Bicycle suspension components

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017110885A1 (de) * 2017-05-18 2018-11-22 Dt Swiss Ag Stoßeinrichtung insbesondere für ein Fahrrad

Citations (8)

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Publication number Priority date Publication date Assignee Title
BE425983A (fr) *
GB191029850A (en) * 1910-12-23 1911-10-19 Frederick Nourse Improvements in Spring Forks for Motor-cycles and other Vehicles.
GB104022A (en) * 1916-02-18 1917-02-19 Norman Tuckwood Downs Improvements in Spring-frames for Motor Cycles and the like.
GB116153A (en) * 1917-06-05 1918-06-05 John James Richardson Improvements in Spring Frames for Cycles and the like.
GB155973A (en) * 1919-11-18 1921-01-06 Norman Dean Willoughby Improvements in shock-absorbing devices for the frames of motor-cycles
GB752284A (en) * 1954-06-29 1956-07-11 Zuendapp Werke Gmbh Improvements relating to wheel suspensions in motor cycles, motor scooters, or other light vehicles
US5649693A (en) * 1995-08-25 1997-07-22 Gt Bicycles, Inc. Position sensitive friction damper
JP2000009168A (ja) * 1998-04-24 2000-01-11 Tokiko Fukushima Kk 緩衝装置

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DE1937147A1 (de) * 1969-07-22 1971-02-04 Daimler Benz Ag Vorrichtung zum Befestigen eines Teleskopstossdaempfers am abgefederten Fahrzeugaufbau
NL155342B (nl) * 1974-02-05 1977-12-15 Itt Veereenheid voor een af te veren systeem.
DE29920363U1 (de) * 1999-11-19 2000-02-03 Mueller Technik Gmbh Dämpferstange für Motorradstoßdämpfer
DE202004013640U1 (de) * 2004-09-01 2004-11-11 Grätz, Michael Gefederter Fahrradrahmen

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE425983A (fr) *
GB191029850A (en) * 1910-12-23 1911-10-19 Frederick Nourse Improvements in Spring Forks for Motor-cycles and other Vehicles.
GB104022A (en) * 1916-02-18 1917-02-19 Norman Tuckwood Downs Improvements in Spring-frames for Motor Cycles and the like.
GB116153A (en) * 1917-06-05 1918-06-05 John James Richardson Improvements in Spring Frames for Cycles and the like.
GB155973A (en) * 1919-11-18 1921-01-06 Norman Dean Willoughby Improvements in shock-absorbing devices for the frames of motor-cycles
GB752284A (en) * 1954-06-29 1956-07-11 Zuendapp Werke Gmbh Improvements relating to wheel suspensions in motor cycles, motor scooters, or other light vehicles
US5649693A (en) * 1995-08-25 1997-07-22 Gt Bicycles, Inc. Position sensitive friction damper
JP2000009168A (ja) * 1998-04-24 2000-01-11 Tokiko Fukushima Kk 緩衝装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12024257B2 (en) 2020-06-17 2024-07-02 Sram, Llc Bicycle suspension components
IT202200002561A1 (it) * 2022-02-11 2023-08-11 Agazzini & C S N C Leveraggio per bicicletta provvista di sospensione posteriore comprendente un elemento di collegamento del triangolo anteriore del telaio della bicicletta al triangolo posteriore del detto telaio
US11884359B2 (en) 2022-02-25 2024-01-30 Sram, Llc Bicycle suspension components
IT202200005708A1 (it) * 2022-03-23 2023-09-23 Wilier Triestina S P A Sistema di smorzamento delle vibrazioni per un telaio di bicicletta e telaio di bicicletta comprendente tale sistema di smorzamento

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