WO1990015748A1 - Suspension device for the forks and saddle shafts of cycles or other wheeled objects - Google Patents

Suspension device for the forks and saddle shafts of cycles or other wheeled objects Download PDF

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Publication number
WO1990015748A1
WO1990015748A1 PCT/FR1990/000443 FR9000443W WO9015748A1 WO 1990015748 A1 WO1990015748 A1 WO 1990015748A1 FR 9000443 W FR9000443 W FR 9000443W WO 9015748 A1 WO9015748 A1 WO 9015748A1
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WO
WIPO (PCT)
Prior art keywords
elastic element
fork
section
absorb
suspension device
Prior art date
Application number
PCT/FR1990/000443
Other languages
French (fr)
Inventor
René Tranvoiz
Original Assignee
Tranvoiz Rene
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
Priority claimed from FR8908164A external-priority patent/FR2648402B2/en
Application filed by Tranvoiz Rene filed Critical Tranvoiz Rene
Publication of WO1990015748A1 publication Critical patent/WO1990015748A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J1/00—Saddles or other seats for cycles; Arrangement thereof; Component parts
    • B62J1/02—Saddles resiliently mounted on the frame; Equipment therefor, e.g. springs
    • B62J1/06—Saddles capable of parallel motion up and down
    • 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
    • B62K21/18—Connections between forks and handlebars or handlebar stems
    • B62K21/20—Connections between forks and handlebars or handlebar stems resilient

Definitions

  • Suspension device applicable to forks and seatposts for cycles and rolling object.
  • the present invention relates to a suspension device for cycle or any rolling object, allowing better comfort applicable in particular to forks and selne rods of cycles or rolling objects circulating in rough terrain.
  • a suspension device applicable in particular to the front and rear fork on cycle or rolling object consisting of an assembly comprising on the one hand, an axis integral with the support of wheel sliding on a ring placed in a tube directly from the frame or mounted on a ball on the chassis or frame; an elastic element such as a spring or rubber buffer of low height being interposed between said tube of the frame and or between the tube mounted on ball and the wheel support, the axis comprising an upper part of smaller diameter provided with means holding sliding in rotation such as fluted, oblong, or half-round, flat or provided with grooves allowing it to slide in a sleeve itself provided with a corresponding female part secured to said tube which is connected to a control member to allow the transmission of the direction in the case of a front fork.
  • the object of the present invention is to provide improvements to the structure of such a device in order to improve the efficiency of the elastic element at the level of a fork and also applicable in the same way to a cycle seat post or rolling object.
  • the invention relates to a suspension device applicable in particular to cycles or rolling objects in uneven sites of the type comprising an elastic element interposed between an axially displaceable rod, integral with a movable part of said cycle or rolling object and a element of the frame, the said rod being guided by at least one sliding ring and a sleeve for holding the said axis in rotation, characterized in that the elastic element is axially subdivided into at least one part of large section intended to absorb shocks violent and in at least a part of small section intended to crush in priority and to absorb vibrations and low loads.
  • the elastic element is made of flexible rubber-like material consisting of solid lower (17) and upper (15 ') parts separated by interior (16) and or exterior (16') lateral spaces defining zones of reduced section designed in such a way that they constantly absorb the part of the load which is on the front or under the load transported on the cycle or rolling object and on the other hand the shocks and vibrations due to uneven terrain.
  • this elastic element (6) is formed of a rubber block or sleeve of a shape, a thickness and a diameter such that it can absorb : on the one hand the low loads and vibrations, by means defined by at least one groove either inside (16) in the rubber opening into the central bore (19) or outside (16), and on the other hand the shocks very violent by an upper solid part (15) and a lower solid part (17) in order to avoid tailgating; therefore, this elastic element (6) reacts at the same time to viorations, to violent shocks with a small clearance, hence the possibility of adapting it to all cycles or rolling objects; this elastic element being interposed either between the fork head (7) and the frame or chassis (13) of the cycle or rolling object, or between the seatpost and the frame responds directly to shocks transmitted from bottom to top.
  • the elastic element (6) is provided with at least a part of large cross-section and a part of reduced cross-section so as to define at least two zones of different compressibility, that of small cross-section ensuring the 'ab sorption of vibrations and that of large section absorption of shocks due to unevenness of the ground, the elastic element in one piece in the form of a rubber block of external section successively comprises a wide part and a reduced part for example frustoconical as illustrated in FIG 6.
  • the elastic element consists on the one hand of a metal spring (29) of the type with helical coils defining the element of large section bearing on at least one of these ends on a rubber element (30) of small thickness and greater flexibility defining the part of reduced section which is crushed as a priority as illustrated in FIG 7.
  • the elastic element (6) designed to absorb vibrations and shocks has a cavity (20) to receive the tube (1) which is thus inserted between the upper dust cover edges (18) forming a seal between the tube (1) and the axis (3), bearing on the upper part (15) of the elastic element (6) of a thickness designed to absorb the load on the front, as well as the vibrations, thanks to one or more grooves (16 ') spaced outside of the elastic element (6) and one or more grooves (16) inside, opening into the central bore (19) of the passage of the axis (3) as described above.
  • the elastic element when the upper part (15) bears on the part (17), the load is collected by a partial crushing of the rubber at the level of the groove (16), (16 ' ) similarly, the small vibrations are collected by the remaining stroke of these grooves (16), (16 '), while the violent shocks are collected by the two blocks (15), (17) in direct support one on the other.
  • the elastic element may be constituted, according to another embodiment, by at least two superposed O-rings (21) rubber, as illustrated in FIG 2, 3.
  • FIG 1 provided for positioning the elastic element for example in the case of a fork between the fork head (7) and the tube (1) which is mounted on a ball (5) on the chassis or frame (13) of the cycle or rolling object.
  • the elastic element (6) or (21) is disposed in a cavity (23) provided in the upper part of the fork head (12), which allows part or all of the element to be inserted. chosen elastic and thus avoid raising the front part of the frame by transferring to the side of the fork, part or all the size of the elastic element here.
  • the fork head comprises a ring (1 2) with cavity (23) and on which ring, can be secured laterally, directly the fork sleeves (10) the axis (3) being fitted axially in said head (12).
  • the sleeve (4) for guiding the upper part (11) of the axle (3) ûe fork may be provided with means for adjusting in vertical position such as for example holes (26), spaced along the length and- on either side of the sleeve (4) on the lateral part with threading of the said holes (26) and holes in the tube (1) to position the sleeve (4) or alternatively a slot on the tube so as to follow the element elastic, the chosen travel, to be joined at the desired height the said sleeve (4) on the tube (1) using screws or bolts (25).
  • holes (26) spaced along the length and- on either side of the sleeve (4) on the lateral part with threading of the said holes (26) and holes in the tube (1) to position the sleeve (4) or alternatively a slot on the tube so as to follow the element elastic, the chosen travel, to be joined at the desired height the said sleeve (4) on the tube (1) using screws or bolts (25).
  • FiG 3 and 4 as a variant there is also the possibility of drilling the tube (1) and the sleeve (4) laterally to the passage hole of the part (11) of the axis (3) and of securing it thanks to a pin screw or any other detachable holding means in order to be able to modify the height of the sleeve (4) in the tube (1) with respect to the height and the travel of the chosen elastic element, ⁇ nfin there is also the possibility of '' bonding of a removable sleeve to the press.
  • the assembly comprises on the one hand an elastic element (6) such as a spring, rubber buffer or several O-rings placed under the saddle (14) between the upper part of the axis (3) provided with a recessed ring (22) and a ring (24) on the tube (1) of the frame, the axis (3) being in its part lower provided with means for holding in rotation relative to a sleeve (4) in which it is slidably mounted, the said sleeve (4) being mounted in the tube (1) of the frame integral with the bottom bracket of the cycle or rolling object.
  • an elastic element (6) such as a spring, rubber buffer or several O-rings placed under the saddle (14) between the upper part of the axis (3) provided with a recessed ring (22) and a ring (24) on the tube (1) of the frame, the axis (3) being in its part lower provided with means for holding in rotation relative to a sleeve (4) in which it is slidably mounted, the said sleeve (4) being mounted in the tube (1) of the frame integral
  • FIG 1 A sectional view of the complete device comprising a rubber elastic element (6) with grooves (16), (16 '), an upper part (15), a solid part (17) lower, a bore (20) of receiving the tube (1), dust cover edges (18) defined at the level of the cavity (20) of the element (15), the head (12) of the hollow fork (7) defining a cavity (23) of receiving the elastic element (6) and the bore (19) of the axis (3) guided in the lower part by the ring (2) and in the upper part (11) by the sleeve (4), the frame ( 13) and the steering tube (10).
  • the tube (1) is mounted by balls (5) on the frame (13).
  • FIG 2 A sectional view of the mounting of the elastic element (6) formed of O-rings (21) superimposed according to a variant, with the fork head (7), the elastic element (6) being held in the cavity (23) between the axis (3) and the edges of the head (12). The joints define between them spaces (24) of reduced section.
  • FIG3 A sectional view of the complete device according to another variant representing a normal fork head (12) (7) with a ring (22) receiving two superposed O-rings (21) forming the elastic element (6), the axle (3) with its upper part (11) held in a ring (4) by the head of a stop screw (8), the tube (1), the chassis or frame (12) mounted by ball (5) on the tube (1) provided internally with a ring (2) for guiding the (3) in the lower part with adjustable positioning on the tube
  • FIG 4 A detail view of the sleeve (4) with threaded hole (26) for receiving screws (25).
  • FIG 5 A detail view of the rubber element (6) with internal grooves (16) and external grooves (16 ') subdividing it into an upper part (15) and a lower part (17) and with axial bore (19 ) and in the upper part with interior receiving cavity (20) of the tube (1) with dust cover edges (18).
  • FIG 6 A detail view of an elastic element (6) formed of a coil spring (29) mounted at the end on rubber pads (30).
  • FIG 7 A detail view of an elastic element (6) of rubber of frustoconical section with an enlarged part (27) and part of reduced section (28), with axial bore (19) and cavity of reception (20) of the lower part of the tube (1) and the frame (13).
  • FIG 8 An overall view of the system applied to a seat post with a frame tube (13) in which is received in adjustable manner a tube (1) in which slides an axis (3) on the sleeve ( 4) and the ring (2), a washer (24) is placed on the upper part of the tube (1) on which bears the elastic element (6) placed under the sleeve, saddle support (14) in the recess in the ring (22) integral with the upper end of the axle (3) on which the seatpost (14) is fitted.
  • the ronaelle (9) and the screw (3) ensuring the retention in extension of the axis (3).
  • the elastic rubber element is a basic mixture comprising rubber SLIC 40 45 50 WITH 50% of black neoprene mixture.

Abstract

A suspension device to be used in the forks and saddle shafts of cycles or other wheeled objects having to travel over rough terrain, consists of an elastic element, a spring or an elastic rubber (6) placed between a tube (1) and the wheel support (7) or the saddle tube (14). Said device includes an axle (3) whose upper section is provided with guiding and holding means. The device is characterized by the fact that the elastic element (6) is subdivided axially into at least one strong section for absorbing violent shocks and at least one weak section which collapses first to absorb vibrations and light loads. The device, according to the invention, is especially designed for cycles or wheeled objects moving over rough terrain.

Description

Dispositif de suspension applicable aux fourches et tiges de selle de cycles et objet roulant.  Suspension device applicable to forks and seatposts for cycles and rolling object.
la présente invention concerne un dispositif de suspension pour cycle ou tout objet roulant, permettant un meilleur confort applicable notamment aux fourches et tiges de selne des cycles ou objets roulants circulant en terrain accidenté.  the present invention relates to a suspension device for cycle or any rolling object, allowing better comfort applicable in particular to forks and selne rods of cycles or rolling objects circulating in rough terrain.
Dans les systèmes de suspension de fourche existants, les systèmes pourvus d'une fourche téléscopique ou d'un système à balancier sont d'une part, très lourds et d'autre part, la position du système amortisseur absorbe une partie de la puissance développée lors de l'effort en cote ou lors des démarrages dans le cas du balancier les mouvements de celui-ci contrarient et par suite absorbent l'effort. Il a également été proposé dans ce domaine par la demande de brevet FR 2632254, un dispositif de suspension applicable notamment à la fourche avant et arrière sur cycle ou objet roulant constituè d'un ensemble comportant d'une part, un axe solidaire du support de roue coulissant sur une bague disposée dans un tube directement du cadre ou monté sur bille sur le châssis ou cadre; un élément élasti que tel qu'un ressort ou tampon caoutchouc de faible hauteur étant intercalé entre le dit tube du cadre et ou entre le tube monté sur bille et le support Je roue, l'axe comportant une partie supérieure de diamètre inférieur pourvue de moyens de maintien coulissant en rotation tels que partie cannelée, oblongue, ou demi-ronde, plate ou munie de rainures lui permettant de coulisser dans un manchon lui même muni d'une partie femelle correspondante solidarisé au dit tube qui est relie à un organe de commande pour permettre la transmission de la direction dans le cas d'une fourche avant.  In existing fork suspension systems, the systems provided with a telescopic fork or a pendulum system are on the one hand very heavy and on the other hand the position of the damping system absorbs part of the developed power during the effort on a slope or during start-ups in the case of the pendulum, the movements of the latter contradict and consequently absorb the effort. It has also been proposed in this field by patent application FR 2632254, a suspension device applicable in particular to the front and rear fork on cycle or rolling object consisting of an assembly comprising on the one hand, an axis integral with the support of wheel sliding on a ring placed in a tube directly from the frame or mounted on a ball on the chassis or frame; an elastic element such as a spring or rubber buffer of low height being interposed between said tube of the frame and or between the tube mounted on ball and the wheel support, the axis comprising an upper part of smaller diameter provided with means holding sliding in rotation such as fluted, oblong, or half-round, flat or provided with grooves allowing it to slide in a sleeve itself provided with a corresponding female part secured to said tube which is connected to a control member to allow the transmission of the direction in the case of a front fork.
L'objet, de la présente invention est d'apporter des perfectionnements à la structure d'un tel dispositif en vue d'améliorer l'ef ficacité de l'élément élastique au niveau d'une fourche et également applicable de la même manière à une tige de selle de cycle ou objet roulant.  The object of the present invention is to provide improvements to the structure of such a device in order to improve the efficiency of the elastic element at the level of a fork and also applicable in the same way to a cycle seat post or rolling object.
Système applicable à la fourche et aux tiges d e selle des cycles ou objets roulants. En effet, l'action naturelle d'un cycliste aprόs avoir encaissé un choc sur l'avant est d'anticiper la transmission de ce choc au niveau de la selle, ainsi une suspension au niveau de la selle évite une telle fatigue et sera d'autant mieux perçue qu'elle aura les mêmes réactions que celles de la fourche avant. . System applicable to the fork and seatpost of cycles or rolling objects. Indeed, the natural action of a cyclist after having absorbed a shock on the front is to anticipate the transmission of this shock at the level of the saddle, thus a suspension at the level of the saddle avoids such fatigue and will be d 'all the better perceived that it will have the same reactions as those of the front fork. .
Selon une 1ère caractéristique l'invention vise un dispositif de suspension applicable notamment aux cycles ou objets roulants dans des sites accidentés du type comportant un élément élastique interposé entre une tige déplaçable axialement, solidaire d'une partie mobile du dit cycle ou objet roulant et un élément du cadre la dite tige étant guidée par au moins une bague de coulissement et un manchon de maintien du dit axe en rotation, caractérisé en ce que l'élément élastique est subdivisé axialement en au moins une partie de forte section destinée à absorber les chocs violents et en au moins une partie de faible section destinée à s'écraser en priorité et à absorber les vibrations et les faibles charges.  According to a 1st characteristic, the invention relates to a suspension device applicable in particular to cycles or rolling objects in uneven sites of the type comprising an elastic element interposed between an axially displaceable rod, integral with a movable part of said cycle or rolling object and a element of the frame, the said rod being guided by at least one sliding ring and a sleeve for holding the said axis in rotation, characterized in that the elastic element is axially subdivided into at least one part of large section intended to absorb shocks violent and in at least a part of small section intended to crush in priority and to absorb vibrations and low loads.
Selon une 2éme caractéristique, l'élément élastique est réalisé en matériel souple type caoutchouc constitué de parties inférieure (17) et supérieure (15') pleines séparées par des espaces latéraux intérieurs (16) et ou extérieurs (16') définissant des zones de section réduite conçus de telle manière qu'elles absorbent constamment la partie de la charge qui se trouve sur l'avant ou sous la charge transportée sur le cycle ou objet roulant et d'autre - part les chocs et vibrations dûs aux inégalités du terrain. Dans ce cas et selon un mode de réalisation particulier illustré en FIG 5 cet élément élastique (6) est formé d'un bloc ou manchon de caoutchouc d'une forme, d'une épaisseur et d'un diamètre tels qu'il puiεse absorber: d'une part les faibles charges et vibrations, par des moyens définis par au moins une gorge soit intérieure (16) dans le caoutchouc débouchant dans l'alésage central (19) soit extérieure (16), et d'autre part les chocs très violent par une partie pleine supérieure (15) et une partie pleine inférieure (17) afin d'éviter le talonnage; de ce fait, cet élément élastique (6) réagit à la fois aux viorations, aux chocs violents avec un faible débattement, d'où la possibilité de l'adapter sur tous cycles ou objets roulants; cet élément élastique étant inter calé soit entre la tête de fourche (7) et le cadre ou châssis (13) du cycle ou objet roulant, soit entre la tige de selle et le cadre répond directement aux chocs transmis de bas en haut.  According to a second characteristic, the elastic element is made of flexible rubber-like material consisting of solid lower (17) and upper (15 ') parts separated by interior (16) and or exterior (16') lateral spaces defining zones of reduced section designed in such a way that they constantly absorb the part of the load which is on the front or under the load transported on the cycle or rolling object and on the other hand the shocks and vibrations due to uneven terrain. In this case and according to a particular embodiment illustrated in FIG 5 this elastic element (6) is formed of a rubber block or sleeve of a shape, a thickness and a diameter such that it can absorb : on the one hand the low loads and vibrations, by means defined by at least one groove either inside (16) in the rubber opening into the central bore (19) or outside (16), and on the other hand the shocks very violent by an upper solid part (15) and a lower solid part (17) in order to avoid tailgating; therefore, this elastic element (6) reacts at the same time to viorations, to violent shocks with a small clearance, hence the possibility of adapting it to all cycles or rolling objects; this elastic element being interposed either between the fork head (7) and the frame or chassis (13) of the cycle or rolling object, or between the seatpost and the frame responds directly to shocks transmitted from bottom to top.
Selon un autre mode de réalisation l'élément élastique (6) est pourvu au moins d'une partie de forte section et d'une partie de section réduite de manière à définir au moins deux zones de compressibilité différente, celle de faible section assurant l'ab sorption des vibrations et celle de forte section l'absorption des chocs dûs aux inégalités du terrain, l'élément élastique en une seule pièce sous forme d'un bloc caoutchouc de section extérieure comporte successivement une partie large et une partie réduite par exemple tronconique comme illustré en FIG 6. According to another embodiment, the elastic element (6) is provided with at least a part of large cross-section and a part of reduced cross-section so as to define at least two zones of different compressibility, that of small cross-section ensuring the 'ab sorption of vibrations and that of large section absorption of shocks due to unevenness of the ground, the elastic element in one piece in the form of a rubber block of external section successively comprises a wide part and a reduced part for example frustoconical as illustrated in FIG 6.
Selon une autre variante l'élément élastique est constitué d'une part d'un ressort (29) métallique du type à spires hélicoïdales définissant l'élément de forte section en appui sur au moins une de ces extrémités sur un élément caoutchouc (30) de faible épaisseur et de plus grande souplesse définissant la partie de section réduite qui s'écrase en priorité comme illustré en FIG 7.  According to another variant, the elastic element consists on the one hand of a metal spring (29) of the type with helical coils defining the element of large section bearing on at least one of these ends on a rubber element (30) of small thickness and greater flexibility defining the part of reduced section which is crushed as a priority as illustrated in FIG 7.
Selon une autre particularité vue en FIG 5, l'élément élastique (6) conçu pour absorber les vibrations et les chocs présente une cavité (20) pour recevoir le tube (1) qui est ainsi inséré entre les bords cache poussière supérieurs (18) formant étancheité entre le tube (1) et l'axe(3), en appui sur la partie supérieure (15) de l'élément élastique (6) d'une épaisseur conçue pour absorber la charge sur l'avant, ainsi que les vibrations, grâce à une ou plusieurs gorges (16') espacées à l'extérieur de l'élément élastique (6) et une ou plusieurs gorges (16) à l'intérieur, débouchant dans l'alésage central (19) du passage de l'axe (3) comme décrit précédèrent.  According to another feature seen in FIG 5, the elastic element (6) designed to absorb vibrations and shocks has a cavity (20) to receive the tube (1) which is thus inserted between the upper dust cover edges (18) forming a seal between the tube (1) and the axis (3), bearing on the upper part (15) of the elastic element (6) of a thickness designed to absorb the load on the front, as well as the vibrations, thanks to one or more grooves (16 ') spaced outside of the elastic element (6) and one or more grooves (16) inside, opening into the central bore (19) of the passage of the axis (3) as described above.
Ainsi dans l'élément élastique caoutchouc (6), lorsque la partie supérieure (15) vient en appui sur la partie (17), la charge est encaissée par un écrasement partiel du caoutchouc au niveau de la gorge (16), (16') de même, les petites vibrations sont encaissées par la course restante de ces gorges (16), (16'), tandis que les chocs violents sont encaissés par les deux blocs (15), (17) en appui direct l'un sur l'autre. En variante l'élément élastique peut-être constitué, selon un autre mode de réalisation par au moins deux joints toriques (21) caoutchouc superposés, comme illustré en FIG 2, 3. Le fonctionnement est identique, les joints sous l'effet de la charge vont se déformer tendant à passer d'une section circulaire à une section carrée qui est celle rencontrée lorsu'ils subissent des chocs violents, les espaces curvilignes (24) entre joints (21), coresspondent aux gorges (16), (16') du bloc de caoutchouc (6). Dans ce cas, pour assurer la retenue latérale extérieure des joint's toriques (21) il est nécessaire de prévoir une bague extérieure (22) ou une cavité (23) FIG 1 prévue pour positionner l'élément élastique par exemple dans le cas d'un fourche entre la tête de fourche (7) et le tube (1) qui est monté sur bille (5) sur le châssis ou cadre (13) du cycle ou objet roulant. Thus in the elastic rubber element (6), when the upper part (15) bears on the part (17), the load is collected by a partial crushing of the rubber at the level of the groove (16), (16 ' ) similarly, the small vibrations are collected by the remaining stroke of these grooves (16), (16 '), while the violent shocks are collected by the two blocks (15), (17) in direct support one on the other. As a variant, the elastic element may be constituted, according to another embodiment, by at least two superposed O-rings (21) rubber, as illustrated in FIG 2, 3. The operation is identical, the seals under the effect of the load will deform tending to pass from a circular section to a square section which is the one encountered when they are subjected to violent shocks, the curvilinear spaces (24) between seals (21), correspond to the grooves (16), (16 ' ) of the rubber block (6). In this case, to ensure the external lateral retention of the O-rings (21) it is necessary to provide an outer ring (22) or a cavity (23) FIG 1 provided for positioning the elastic element for example in the case of a fork between the fork head (7) and the tube (1) which is mounted on a ball (5) on the chassis or frame (13) of the cycle or rolling object.
Selon une autre caractéristique l'élément élastique (6) ou (21) est disposé dans une cavité (23) prévue dans la partie supérieure de la tête (12) de fourche, ce qui permet d'insérer une partie ou tout l'élément élastique choisi et ainsi éviter de relever la partie avant du cadre en reportant du côté de la fourche, une partie ou tout l'encombrement de l'élément élastique choici. Le diamètre intérieur de la cavité (23) correspondant au diamètre extérieur de l'élément élastique (6-21) choisi, assurant ainsi sa tenue latérale et évitant l'utilisation d'une bague (22) de maintien.  According to another characteristic, the elastic element (6) or (21) is disposed in a cavity (23) provided in the upper part of the fork head (12), which allows part or all of the element to be inserted. chosen elastic and thus avoid raising the front part of the frame by transferring to the side of the fork, part or all the size of the elastic element here. The inside diameter of the cavity (23) corresponding to the outside diameter of the elastic element (6-21) chosen, thus ensuring its lateral hold and avoiding the use of a retaining ring (22).
Selon un mode de réalisation illustré en FIG 2 relatif à une suspension pour fourche, la tête de fourche comporte une bague ( 1 2) avec cavité (23) et sur laquelle bague, peuvent être solidarisés latéralement, directement les fourreaux de fourche (10) l'axe (3) étant emmanché axialement dans la dite tête (12).  According to an embodiment illustrated in FIG 2 relating to a suspension for fork, the fork head comprises a ring (1 2) with cavity (23) and on which ring, can be secured laterally, directly the fork sleeves (10) the axis (3) being fitted axially in said head (12).
Selon une autre particularité de l'invention illustrée en FIG 4 également relative à la suspension d'une fourche de cycle. Le manchon (4) de guidage de la partie supérieure (11) de l'axe (3) ûe fourche peut-être pourvu de moyens de réglages en position verticale tels que par exemple perçages (26), espacés sur la longueur et- de part et d'autre du manchon (4) sur la partie latérale avec filetage des dits trous (26) et perçages du tube (1) pour positionner le manchon (4) ou en variante une fente sur le tube de manière suivant l'élément élastique, le débattement choisis, à solidariser à la hauteur voulue le dit manchon (4) sur le tube (1) grâce à des vis ou boulons (25). FiG 3 et 4 en variante il y a possibilité également de percer le tube (1) et le manchon (4 ) latéralement au trou de passage de la partie (11) de l'axe (3) et d'assurer la solidarisation grâce à une vis goupille ou tout autre moyens de maintien démontable pour pouvoir modifier la hauteur du manchon (4) dans le tube (1) par rapport à la hauteur et à la course de l'élément élastique choisi, ϋnfin il y a également la possibilité à 'un collage dυ manchon démontable à la presse. Selon un mode de réalisation illustré en FÏG 8 appliqué à une suspension de tige de selle de cycle ou objet roulant l'ensemble comporte d'une part un élément élastique (6) tel qu'un ressort, tampon caoutchouc ou plusieurs joints toriques disposés sous la selle (14) entre la partie supérieure de l'axe (3) pourvu d'une bague évidée (22) et une bague (24) sur le tube (1) du cadre, l'axe (3) étant dans sa partie inférieure pourvu de moyens de maintien en rotation par rapport à un manchon (4) dans lequel il est monté coulissant, le dit manchon (4) étant monté dans le tube ( 1 ) du cadre solidaire du tube de pédalier du cycle ou objet roulant. According to another feature of the invention illustrated in FIG 4 also relating to the suspension of a cycle fork. The sleeve (4) for guiding the upper part (11) of the axle (3) ûe fork may be provided with means for adjusting in vertical position such as for example holes (26), spaced along the length and- on either side of the sleeve (4) on the lateral part with threading of the said holes (26) and holes in the tube (1) to position the sleeve (4) or alternatively a slot on the tube so as to follow the element elastic, the chosen travel, to be joined at the desired height the said sleeve (4) on the tube (1) using screws or bolts (25). FiG 3 and 4 as a variant there is also the possibility of drilling the tube (1) and the sleeve (4) laterally to the passage hole of the part (11) of the axis (3) and of securing it thanks to a pin screw or any other detachable holding means in order to be able to modify the height of the sleeve (4) in the tube (1) with respect to the height and the travel of the chosen elastic element, ϋnfin there is also the possibility of '' bonding of a removable sleeve to the press. According to an embodiment illustrated in FIG 8 applied to a suspension of a cycle seat post or rolling object, the assembly comprises on the one hand an elastic element (6) such as a spring, rubber buffer or several O-rings placed under the saddle (14) between the upper part of the axis (3) provided with a recessed ring (22) and a ring (24) on the tube (1) of the frame, the axis (3) being in its part lower provided with means for holding in rotation relative to a sleeve (4) in which it is slidably mounted, the said sleeve (4) being mounted in the tube (1) of the frame integral with the bottom bracket of the cycle or rolling object.
L'invention va être décrite plus en détail en référence aux dessins joints à titre d'illustration qui représentent respectivement :  The invention will be described in more detail with reference to the accompanying drawings by way of illustration which respectively represent:
FIG 1 : Une vue en coupe du dispositif complet comportant un élément élastique caoutchouc (6) avec gorges (16), (16'), une partie supérieure (15), une partie pleine (17) inférieure, un alésage (20) de réception du tube (1), des bords cacne poussière (18) définis au niveau de la cavité (20) de l'élément (15), la tête (12) de la fourche (7) évidée définissant une cavité (23) de réception de l' élément élastique (6) et l'alésage (19) de l'axe (3) guidé en partie inférieure par la bague (2) et en partie supérieure (11) par le manchon (4), le cadre (13) et le tube de direction (10). Le tube (1) est monté par billes (5) sur le cadre (13).  FIG 1: A sectional view of the complete device comprising a rubber elastic element (6) with grooves (16), (16 '), an upper part (15), a solid part (17) lower, a bore (20) of receiving the tube (1), dust cover edges (18) defined at the level of the cavity (20) of the element (15), the head (12) of the hollow fork (7) defining a cavity (23) of receiving the elastic element (6) and the bore (19) of the axis (3) guided in the lower part by the ring (2) and in the upper part (11) by the sleeve (4), the frame ( 13) and the steering tube (10). The tube (1) is mounted by balls (5) on the frame (13).
FIG 2: Une vue en coupe du montage de l'élément élastique (6) formé de joints toriques (21) superposés selon une variante , avec la tête de fourche (7), l'élément élastique (6) étant main tenu dans la cavité (23) entre l'axe (3) et les bords de la tête (12). Les joints définissent entre eux des espaces (24) de section réduite.  FIG 2: A sectional view of the mounting of the elastic element (6) formed of O-rings (21) superimposed according to a variant, with the fork head (7), the elastic element (6) being held in the cavity (23) between the axis (3) and the edges of the head (12). The joints define between them spaces (24) of reduced section.
FIG3: Une vue en coupe du dispositif complet selon une autre variante représentant une tête (12) de fourche (7) normale avec un bague (22) recevant deux joints toriques (21) superposés formant l'élément élastique (6), l'axe (3) avec sa partie supérieure (11) maintenue dans une bague (4) par la tête d'u.e vis (8) d'arrêt, le tube (1), le châssis ou cadre (12) monté par bille (5) sur le tube (1) pourvu intérieurement d'une bague (2) de guidage de l'a (3) en partie inférieure avec positionnement réglabe sur le tubeFIG3: A sectional view of the complete device according to another variant representing a normal fork head (12) (7) with a ring (22) receiving two superposed O-rings (21) forming the elastic element (6), the axle (3) with its upper part (11) held in a ring (4) by the head of a stop screw (8), the tube (1), the chassis or frame (12) mounted by ball (5) on the tube (1) provided internally with a ring (2) for guiding the (3) in the lower part with adjustable positioning on the tube
(1). (1).
FIG 4: Une vue de détail du manchon (4) avec trou fileté (26) de réception de vis (25).  FIG 4: A detail view of the sleeve (4) with threaded hole (26) for receiving screws (25).
FIG 5: Une vue de détail de l'élément caoutchouc (6) avec gorges intérieures (16) et gorges extérieures (16') le subdivisant en une partie supérieure (15) et une partie inférieure (17) et avec alésage axial (19) et en partie supérieure avec cavité intérieur de réception (20) du tube (1) avec bords cache poussière (18). FIG 5: A detail view of the rubber element (6) with internal grooves (16) and external grooves (16 ') subdividing it into an upper part (15) and a lower part (17) and with axial bore (19 ) and in the upper part with interior receiving cavity (20) of the tube (1) with dust cover edges (18).
FIG 6 : Une vue de détail d'un élément élastique (6) formé d'un ressort à spires (29) monté en extrémité sur tampons caoutchouc (30). FIG 6: A detail view of an elastic element (6) formed of a coil spring (29) mounted at the end on rubber pads (30).
FIG 7 : Une vue de détail d'un élément élastique (6) en caoutchouc de section tronconique avec une partie élargie (27) et partie de section réduite (28), avec alésage axial (19) et cavité de ception (20) de la partie inférieure du tube (1) et du cadre (13) .  FIG 7: A detail view of an elastic element (6) of rubber of frustoconical section with an enlarged part (27) and part of reduced section (28), with axial bore (19) and cavity of reception (20) of the lower part of the tube (1) and the frame (13).
FIG 8 : Une vue d'ensemble du système appliqué à une tige de selle avec un tube de cadre (13) dans lequel est reçu de façon réglable en hauteur un tube (1) dans lequel coulisse un axe (3) sur le manchon (4) et la bague (2), une rondelle (24) est placée sur la partie supérieure du tube (1) sur laquelle prend appui l'élément élastique (6) placé sous le manchon, support de selle (14) dans l'évidement de la bague (22) solidaire de l'extrémité haute de l'axe (3) sur lequel est emmanchée la tige de selle (14). La ronaelle (9) et la vis (3) assurant la retenue en extention de l'axe (3).  FIG 8: An overall view of the system applied to a seat post with a frame tube (13) in which is received in adjustable manner a tube (1) in which slides an axis (3) on the sleeve ( 4) and the ring (2), a washer (24) is placed on the upper part of the tube (1) on which bears the elastic element (6) placed under the sleeve, saddle support (14) in the recess in the ring (22) integral with the upper end of the axle (3) on which the seatpost (14) is fitted. The ronaelle (9) and the screw (3) ensuring the retention in extension of the axis (3).
Selon un mode de réalisation l'élément élastique caoutchouc est un mélange de base comportant du caoutchouc SLIC 40 45 50 ÀVEC 50% de mélange néopréne noir.  According to one embodiment, the elastic rubber element is a basic mixture comprising rubber SLIC 40 45 50 WITH 50% of black neoprene mixture.

Claims

REVENDICATIONS
1) Dispositif de suspension applicable aux fourches et tiges de selle des cycles ou objets roulants dans des sites accidentés du type comportant un élément élastique (6) interposé entre une tige déplaçable axialement solidaire d'une partie mobile du dit cycle ou objet roulant et un élément du cadre, la dite tige étant guidée par un axe reçu dans au moins une bague de coulissement et un manchon de maintien du dit axe en rotation caractérisé en ce que l' élément élastique (6) est subdivisé axialement en au moins une partie de forte section destinée à absorber les chocs violents et en au moins une partie de faible section destinée à s'écraser priorité et à absorber les vibrations et les faibles charges. 1) Suspension device applicable to forks and seatposts of cycles or rolling objects in uneven sites of the type comprising an elastic element (6) interposed between an axially displaceable rod integral with a movable part of said cycle or rolling object and a element of the frame, the said rod being guided by an axis received in at least one sliding ring and a sleeve for holding the said axis in rotation characterized in that the elastic element (6) is axially subdivided into at least part of large section intended to absorb violent shocks and in at least a part of small section intended to crush priority and to absorb vibrations and low loads.
2) Dispositif de suspension selon revendication 1, caractérisé en ce que l'élément élastique (6) est constitué d'une seule pièce sous forme d'un bloc caoutchouc de section extérieure comportant successivement une partie large et une partie réduite, par exemple tronconique.  2) Suspension device according to claim 1, characterized in that the elastic element (6) consists of a single piece in the form of a rubber block of external section successively comprising a wide part and a reduced part, for example frustoconical .
3) Dispositif de suspension selon revendication 1 caractérisé en ce que l'élément élastique (6) est en matériau souple type caoutchouc et est constitué de parties inférieure et supérieure pleines (15), (17) ou (21) séparées par des espaces latéraux intérieurs (16); (24) et/ou extérieurs (16), (24) définissant les zones de section réduite de manière à absorber d'une part les charges se trouvant sur l'avant du cycle ou sous la selle et d'autre part les chocs et vibrations dûs aux inégalités du terrain. 3) Suspension device according to claim 1 characterized in that the elastic element (6) is made of flexible rubber-like material and consists of solid upper and lower parts (15), (17) or (21) separated by lateral spaces interiors (16); (24) and / or external (16), (24) defining the zones of reduced section so as to absorb on the one hand the loads being on the front of the cycle or under the saddle and on the other hand the shocks and vibrations due to uneven terrain.
4) Dispositif de suspension selon revendication 3 caractérisé en ce que l'élément élastique (5) est formé d'un bioc ou manchon caoutchouc pourvu de gorges (16), (16') séparant les parties (15), (17). 4) Suspension device according to claim 3 characterized in that the elastic element (5) is formed of a bioc or rubber sleeve provided with grooves (16), (16 ') separating the parts (15), (17).
5) Dispositif selon revendication 4 caractérisé en ce que l'élément élastique (6) comporte dans sa partie supérieure (15) une cavité (20) pour recevoir le tube (1), les bords (18) faisant cache poussière, et étancheité entre le tube (1) et l'axe (3), des gorges intérieures (16) ou extérieures (16') pour absorber les faibles charges et vibrations, un alésage central (19) pour le passage de l'axe (3).  5) Device according to claim 4 characterized in that the elastic element (6) comprises in its upper part (15) a cavity (20) for receiving the tube (1), the edges (18) forming a dust cover, and sealing between the tube (1) and the axis (3), internal (16) or external (16 ') grooves to absorb low loads and vibrations, a central bore (19) for the passage of the axis (3).
6) Dispositif selon revendication 3 caractérisé en ce αue l'élé ment élastique est constitué d'au moins deux joints toriques (21) superposés définissant entre eux des espaces latéraux (24). 6) Device according to claim 3 characterized in that the elue The elastic element consists of at least two superimposed O-rings (21) defining between them lateral spaces (24).
7) Dispositif selon revendication 6 caractérisé en ce qu'une bag (22) assure le maintien latéral extérieur des joints toriques (21) par exemple positionnée sur la tête (12) de fourche (7).  7) Device according to claim 6 characterized in that a bag (22) provides external lateral support for the O-rings (21), for example positioned on the head (12) of the fork (7).
8) Dispositif selon l'une quelconque des revendications precéden tes appliqué à une fourche de cycle caractérisé en ce que la tête de fourche est formée d'une bague (12) avec cavité (23) de réception de l'élément élastique.  8) Device according to any one of the preceding claims tes applied to a cycle fork characterized in that the fork head is formed of a ring (12) with cavity (23) for receiving the elastic element.
9) Dispositif selon revendication 8 caractérisé en ce que la bague (12) forme la tête de fourche sur laquelle sont solidarisés latéralement les fourreaux (10) de fourche, l'axe (3) étant emmanché axialement dans la tête de fourche (12).  9) Device according to claim 8 characterized in that the ring (12) forms the fork head on which are joined laterally the fork sleeves (10), the axis (3) being fitted axially in the fork head (12) .
10) Dispositif de suspension selon revendication 1 caractérisé en ce que la partie de forte section de l'élément élastique (6) est formé d'un ressort (29) métallique à spires hélicoidales en appui sur au moins une de ses extrémités sur un élément caoutchouc de faible épaisseur définissant la partie de section réduite s'écrasant en priorité pour absorber les faibles charges et vibrations.  10) Suspension device according to claim 1 characterized in that the portion of large section of the elastic element (6) is formed of a metal spring (29) with helical turns supported on at least one of its ends on an element rubber of thin thickness defining the reduced section of section which is priority to absorb to absorb low loads and vibrations.
PCT/FR1990/000443 1989-06-20 1990-06-20 Suspension device for the forks and saddle shafts of cycles or other wheeled objects WO1990015748A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8908164A FR2648402B2 (en) 1988-06-06 1989-06-20 SUSPENSION DEVICE FOR A CYCLE OR A ROLLING OBJECT
FR89/08164 1989-06-20

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WO1990015748A1 true WO1990015748A1 (en) 1990-12-27

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WO (1) WO1990015748A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993008070A1 (en) * 1991-10-25 1993-04-29 Daniel Dormoy Method and device for mounting a damping element between two concentric mechanical shafts of which one is subjected to vibrations
US5509676A (en) * 1994-01-26 1996-04-23 Kabushiki Kaisha Daikin Seisakusho Shock absorber for a bicycle front fork
DE19713671A1 (en) * 1996-04-03 1997-11-06 Acs Advanced Cycle Sport Vertr Front fork shock absorber located, protected and hidden in steering head tube
US5704626A (en) * 1995-09-05 1998-01-06 Kesinger; Donald A. Suspension device for reducing transmission of shock through bicycle components
US5713555A (en) * 1994-06-01 1998-02-03 Zurfluh; Louis Saddle support especially for a bicycle
US5927738A (en) * 1996-08-20 1999-07-27 Kesinger; Donald A. Bicycle seat suspension system
DE102006008992A1 (en) * 2006-02-24 2007-09-06 Logisch! Consulting Gmbh Sprung fork for bicycle, includes three linear needle bearings running in tracks of molding fixed to fork shaft having commercially-standard dimensions
CN100384648C (en) * 2005-06-30 2008-04-30 上海交通大学 Elastic connecting device for air-cushion mixed vehicle

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Publication number Priority date Publication date Assignee Title
DE571105C (en) * 1933-02-23 Max Hahn Control head for bicycles and motorcycles
FR872359A (en) * 1940-10-01 1942-06-05 Combination suspension with shock absorber for bicycle, tandem, motorcycle and similar vehicles with saddle
FR880554A (en) * 1941-07-30 1943-03-30 Elastic suspension device for velocipede
FR1087744A (en) * 1953-11-23 1955-02-28 Sncf Dry friction shock absorber
GB1132954A (en) * 1966-04-07 1968-11-06 Angus George Co Ltd Improvements in and relating to anti-vibration mounting elements
US3936076A (en) * 1974-08-23 1976-02-03 Probst Kendall D Cycle shock absorber
US3989263A (en) * 1975-03-17 1976-11-02 Stuck Gregory A Shock absorbing seat post
FR2632254A1 (en) * 1988-06-06 1989-12-08 Tranvoiz Rene Suspension device which can be applied particularly to cycles or to a rolling object

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE571105C (en) * 1933-02-23 Max Hahn Control head for bicycles and motorcycles
FR872359A (en) * 1940-10-01 1942-06-05 Combination suspension with shock absorber for bicycle, tandem, motorcycle and similar vehicles with saddle
FR880554A (en) * 1941-07-30 1943-03-30 Elastic suspension device for velocipede
FR1087744A (en) * 1953-11-23 1955-02-28 Sncf Dry friction shock absorber
GB1132954A (en) * 1966-04-07 1968-11-06 Angus George Co Ltd Improvements in and relating to anti-vibration mounting elements
US3936076A (en) * 1974-08-23 1976-02-03 Probst Kendall D Cycle shock absorber
US3989263A (en) * 1975-03-17 1976-11-02 Stuck Gregory A Shock absorbing seat post
FR2632254A1 (en) * 1988-06-06 1989-12-08 Tranvoiz Rene Suspension device which can be applied particularly to cycles or to a rolling object

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993008070A1 (en) * 1991-10-25 1993-04-29 Daniel Dormoy Method and device for mounting a damping element between two concentric mechanical shafts of which one is subjected to vibrations
FR2683010A1 (en) * 1991-10-25 1993-04-30 Dormoy Daniel METHOD AND DEVICE FOR MOUNTING A DAMPING ELEMENT BETWEEN TWO CONCENTRIC MECHANICAL AXES, ONE OF WHICH IS SUBJECT TO VIBRATION.
US5509676A (en) * 1994-01-26 1996-04-23 Kabushiki Kaisha Daikin Seisakusho Shock absorber for a bicycle front fork
US5713555A (en) * 1994-06-01 1998-02-03 Zurfluh; Louis Saddle support especially for a bicycle
US5704626A (en) * 1995-09-05 1998-01-06 Kesinger; Donald A. Suspension device for reducing transmission of shock through bicycle components
DE19713671A1 (en) * 1996-04-03 1997-11-06 Acs Advanced Cycle Sport Vertr Front fork shock absorber located, protected and hidden in steering head tube
DE19713671C2 (en) * 1996-04-03 2003-03-06 Acs Advanced Cycle Sport Vertr Front fork shock absorber for road bikes
US5927738A (en) * 1996-08-20 1999-07-27 Kesinger; Donald A. Bicycle seat suspension system
CN100384648C (en) * 2005-06-30 2008-04-30 上海交通大学 Elastic connecting device for air-cushion mixed vehicle
DE102006008992A1 (en) * 2006-02-24 2007-09-06 Logisch! Consulting Gmbh Sprung fork for bicycle, includes three linear needle bearings running in tracks of molding fixed to fork shaft having commercially-standard dimensions

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