WO1992015477A1 - Systeme de suspension pour cycles - Google Patents
Systeme de suspension pour cycles Download PDFInfo
- Publication number
- WO1992015477A1 WO1992015477A1 PCT/GB1992/000397 GB9200397W WO9215477A1 WO 1992015477 A1 WO1992015477 A1 WO 1992015477A1 GB 9200397 W GB9200397 W GB 9200397W WO 9215477 A1 WO9215477 A1 WO 9215477A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frame
- chainstay
- cycle
- flexible member
- joined
- Prior art date
Links
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
- 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
- B62K2025/041—Axle suspensions for mounting axles resiliently on cycle frame or fork the cycle frame being made of a flexible material
-
- 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
- B62K2201/00—Springs used in cycle frames or parts thereof
- B62K2201/02—Rubber springs
Definitions
- This invention relates to a suspension system for a pedal cycle, and in particular to a rear wheel suspension system.
- Rear wheel suspension systems for pedal cycles are known in which the chainstay is pivotally articulated to the cycle frame.
- Such arrangements although generally effective, are disadvantageous in that the pivot structure increases the weight and cost of the cycle and, since it requires moving or sliding parts, is subject to wear and potential failure.
- the present invention provides a cycle having a rear suspension system comprising, resilient means located between the seat stays and the cycle frame, and a flexible member joining the. chainstay to the frame, whereby said flexible member permits pivotal movement of said chainstay relative to said frame.
- the flexible member may be formed as a separate element that is joined to both the frame and the chainstay, or alternatively may be formed as an extension of either the chainstay or the frame.
- the flexible member may be a plate of high-grade steel, and may preferably be provided with a shaped cut-out to provide the desired flexing characteristics.
- the chainstay may be joined to the frame via the flexible member at the bottom of the frame in the region of the pedal crank housing.
- the chainstay may be raised and joined to the frame via the flexible member at a point along the seat tube.
- the resilient means provides the principal damping of the suspension system and preferably comprises a resilient elastomeric member such as a rubber bush.
- the resilient means is chosen and shaped so as to give a desired spring characteristic, e.g. non-linear.
- the resilient means may comprise a hydraulic damping unit.
- the resilient means may be secured between the seat stays and the frame in any of a number of conventional ways.
- Fig. 1 is a side view of a rear portion of a bicycle frame of a first embodiment of the invention
- Fig. 2 is a plan view of the flexible member of the embodiment of Fig. 1;
- Fig. 3 is a detail showing the chainstay joined to the frame by an alternative flexible member;
- Fig. 4 is a side view of a second embodiment;
- Fig. 5 is a sectional view through a resilient means, and
- Figs. 6 and 7 are views along arrow A of Fig. 4 showing alternative configurations for the resilient means.
- Fig. 1 there is shown the rear part of a bicycle frame 1.
- the frame 1 includes a front tube 2, a seat tube 3 and a cross bar 4.
- the front tube 2 and seat tube 3 meet at the bottom of the frame at a pedal crank housing 5.
- Extending rearwardly from the main frame 1 are chainstays 6 and seat stays 7 that form a triangle with seat tube 3.
- the chainstays 6 and seat stays 7 are formed as forks to permit accommodation of the rear wheel (not shown) .
- the rear wheel is mounted by means of a pair of mounting brackets 8 provided at the junction of the distal ends of the chainstays 6 and seat stays 7.
- the seat stay 7 is fixed to an upper part of frame 1 via a resilient member 9 to provide the principal damping for the suspension system.
- This resilient member can take one of a number of forms as discussed further below.
- the chainstay 6 is fixed to the frame 1 by a flexible member 10.
- flexible member 10 in this embodiment is in the form of a plate of high-grade steel.
- the flexible member 10 has a cut ⁇ out central portion 14 that provides the plate with the required flexibility.
- One end of the flexible plate 10 is fixed to the chainstay 6 by welding, via screw holes 11, or by any other suitable means.
- the other end of the flexible plate 10 is divided by a pair of slots into a central 12 and two outer 13 portions.
- the central and outer portions are then bent out of the plane of the plate so that the end of the plate may engage and be similarly secured to, the curved surface ⁇ f the pedal crank housing 5.
- the central portion may be bent upwardly and the outer portions downwardly, or vice versa.
- Fig. 3 shows an alternative arrangement in which the flexible plate member 10' is formed integrally with the pedal crank housing 5. Similarly, the flexible plate could be formed integrally with the chainstay and then fixed to the crank housing.
- Fig. 4 shows an alternative embodiment featuring a raised chainstay arrangement.
- Raised chainstays can be advantageous in certain circumstances in that they can prevent mud gathering on the chain and can facilitate chain removal.
- the chainstay 6 is fixed to the seat tube 3 at a point above the pedal crank housing via a flexible plate member 10.
- an additional reinforcing strut 15 may be provided joining the front tube 2 with the seat tube 3 at the point where the chainstay 6 joins the seat tube.
- Fig. 5 illustrates one possible configuration for the resilient member 9.
- This embodiment comprises an elastomeric, e.g. rubber, bush 16 surrounding a threaded spigot 17. The bush 16 is in turn clamped in a metal ring 18.
- the resilient member may be fitted between the frame and the seat stay in a number of ways, two of which are suggested by Figs. 6 and 7.
- Fig. 6 the spigot is threadedly connected to the base of the TJ of the seat stay 7 and the metal ring is connected to the seat tube 3 by a pair of extending arms, while in fig. 7 this arrangement is reversed with the threaded spigot connecting to the seat tube 3.
- the elastomeric material is chosen and shaped ⁇ so as to provide a desired non-linear spring characteristic.
- the principal damping of the suspension is provided by the resilient member 9, and the chainstay is allowed to move in a pivotal manner by virtue of being joined to the frame via the flexible member.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
Abstract
Système de suspension pour une roue arrière de bicyclette comprenant un élément souple (9) situé entre la fourche soutenant le siège (7) et le cadre (1). La fourche du pédalier (6) est reliée pivotante au cadre par l'intermédiaire d'un élément souple (1), par ex. une plaque d'acier de forme appropriée, soit au niveau du logement de la manivelle de pédalier (5), soit à un point situé sur le tube de selle (3).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB919104671A GB9104671D0 (en) | 1991-03-06 | 1991-03-06 | Bicycle suspension system |
GB9104671.4 | 1991-03-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1992015477A1 true WO1992015477A1 (fr) | 1992-09-17 |
Family
ID=10691050
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1992/000397 WO1992015477A1 (fr) | 1991-03-06 | 1992-03-06 | Systeme de suspension pour cycles |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB9104671D0 (fr) |
WO (1) | WO1992015477A1 (fr) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5441292A (en) * | 1993-09-15 | 1995-08-15 | Gt Bicycles, Inc. | Bicycle rear suspension system |
US5797613A (en) * | 1996-06-14 | 1998-08-25 | Gt Bicycles, Inc. | Bicycle flex joint |
GB2329365A (en) * | 1997-09-19 | 1999-03-24 | Gerrard Francis Woods | Bicycle frame with flexible rear section |
US5947499A (en) * | 1996-06-14 | 1999-09-07 | Gt Bicycles, Inc. | Bicycle flexible joint |
AT406364B (de) * | 1997-04-24 | 2000-04-25 | Mlekusch Bernd Dipl Ing | Fahrradrahmen mit einem hauptrahmen und einer hinterradaufhängung |
US7066481B1 (en) | 2005-04-13 | 2006-06-27 | Felt Racing, Llc | Bicycle rear suspension |
EP3098149A1 (fr) * | 2015-05-26 | 2016-11-30 | Cycles Lapierre | Cadre de velo |
DE102020119315A1 (de) | 2020-07-22 | 2022-01-27 | Cotesa Gmbh | Muskelkraftbetriebenes Fahrzeug |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR566517A (fr) * | 1923-05-14 | 1924-02-15 | Système de suspension élastique perfectionnée des cadres de bicyclettes et motocyclettes | |
GB469354A (en) * | 1936-11-04 | 1937-07-23 | Battery Patents Corp | Improvements in bicycle frames |
CH224337A (de) * | 1942-02-20 | 1942-11-15 | Stuber Hans | Vorrichtung zum Abfedern des Hinterrades an Fahrrädern. |
FR979160A (fr) * | 1948-12-01 | 1951-04-23 | Perfectionnements apportés aux cadres pour bicyclettes, vélomoteurs et véhicules analogues | |
GB1205286A (en) * | 1968-07-23 | 1970-09-16 | Moulton Bicycles Ltd | Bicycles having resiliently suspended rear wheels |
DK24879A (da) * | 1978-02-16 | 1979-08-17 | Kabel Metallwerke Ghh | Fremgangsmaade til kontinuerlig fremstilling af varmeisolerede ledningsroer |
EP0399615A2 (fr) * | 1989-05-25 | 1990-11-28 | Marinus Johannes Meijers | Bicyclette |
-
1991
- 1991-03-06 GB GB919104671A patent/GB9104671D0/en active Pending
-
1992
- 1992-03-06 WO PCT/GB1992/000397 patent/WO1992015477A1/fr active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR566517A (fr) * | 1923-05-14 | 1924-02-15 | Système de suspension élastique perfectionnée des cadres de bicyclettes et motocyclettes | |
GB469354A (en) * | 1936-11-04 | 1937-07-23 | Battery Patents Corp | Improvements in bicycle frames |
CH224337A (de) * | 1942-02-20 | 1942-11-15 | Stuber Hans | Vorrichtung zum Abfedern des Hinterrades an Fahrrädern. |
FR979160A (fr) * | 1948-12-01 | 1951-04-23 | Perfectionnements apportés aux cadres pour bicyclettes, vélomoteurs et véhicules analogues | |
GB1205286A (en) * | 1968-07-23 | 1970-09-16 | Moulton Bicycles Ltd | Bicycles having resiliently suspended rear wheels |
DK24879A (da) * | 1978-02-16 | 1979-08-17 | Kabel Metallwerke Ghh | Fremgangsmaade til kontinuerlig fremstilling af varmeisolerede ledningsroer |
EP0399615A2 (fr) * | 1989-05-25 | 1990-11-28 | Marinus Johannes Meijers | Bicyclette |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5441292A (en) * | 1993-09-15 | 1995-08-15 | Gt Bicycles, Inc. | Bicycle rear suspension system |
US5797613A (en) * | 1996-06-14 | 1998-08-25 | Gt Bicycles, Inc. | Bicycle flex joint |
US5865456A (en) * | 1996-06-14 | 1999-02-02 | Gt Bicycles, Inc. | Bicycle flex joint with non-torsional encasement |
US5947499A (en) * | 1996-06-14 | 1999-09-07 | Gt Bicycles, Inc. | Bicycle flexible joint |
AT406364B (de) * | 1997-04-24 | 2000-04-25 | Mlekusch Bernd Dipl Ing | Fahrradrahmen mit einem hauptrahmen und einer hinterradaufhängung |
GB2329365A (en) * | 1997-09-19 | 1999-03-24 | Gerrard Francis Woods | Bicycle frame with flexible rear section |
US7066481B1 (en) | 2005-04-13 | 2006-06-27 | Felt Racing, Llc | Bicycle rear suspension |
EP3098149A1 (fr) * | 2015-05-26 | 2016-11-30 | Cycles Lapierre | Cadre de velo |
FR3036679A1 (fr) * | 2015-05-26 | 2016-12-02 | Cycles Lapierre | Cadre de velo |
DE102020119315A1 (de) | 2020-07-22 | 2022-01-27 | Cotesa Gmbh | Muskelkraftbetriebenes Fahrzeug |
Also Published As
Publication number | Publication date |
---|---|
GB9104671D0 (en) | 1991-04-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5797613A (en) | Bicycle flex joint | |
EP1698549B1 (fr) | Bicyclette avec suspension arrière | |
US9701361B2 (en) | Bicycle frame rear suspension with flexing frame segment | |
EP0643656B1 (fr) | Bicyclette a suspension arriere a bras oscillant | |
US7427077B2 (en) | Rear suspension of a two-wheel vehicle or the like | |
US5685553A (en) | Suspension for a bicycle having a Y shaped frame | |
US5284354A (en) | Bicycle suspension system | |
US20040061305A1 (en) | Rear wheel suspension system for a bicycle | |
US6170845B1 (en) | Bicycle frame | |
US5460396A (en) | Derailleur mounting assembly for a bicycle | |
US20110248470A1 (en) | Bicycle seat tube | |
CA2424428A1 (fr) | Systeme de suspension arriere pour vehicules a deux roues, notamment des bicyclettes | |
US20090102158A1 (en) | Bicycle Rear Suspension | |
US5772227A (en) | Articulated, folding and sectional bicycle with special suspension system | |
US5671936A (en) | Shock absorbing bicycle frame apparatus | |
US20040145148A1 (en) | Ultra lightweight, high efficiency bicycle suspension | |
EP3517422B1 (fr) | Suspension de bicyclette comportant une jambe d'amortisseur | |
EP0621840A1 (fr) | Suspension arriere pour bicyclettes | |
WO1992015477A1 (fr) | Systeme de suspension pour cycles | |
US6837506B2 (en) | Bicycle frame | |
US20030236142A1 (en) | Protective device for a bicycle rear derailleur | |
EP0825098A2 (fr) | Joint flexible pour bicyclette | |
NL1008338C1 (nl) | Veersysteem voor een rijwielframe. | |
EP0796782A2 (fr) | Suspension de bicyclette | |
EP0832814A1 (fr) | Système de suspension pour bicyclette |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LU MC NL SE |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
122 | Ep: pct application non-entry in european phase |