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WO1999061305A1 - Bicycle bottom bracket crank - Google Patents

Bicycle bottom bracket crank Download PDF

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Publication number
WO1999061305A1
WO1999061305A1 PCT/FR1999/001244 FR9901244W WO9961305A1 WO 1999061305 A1 WO1999061305 A1 WO 1999061305A1 FR 9901244 W FR9901244 W FR 9901244W WO 9961305 A1 WO9961305 A1 WO 9961305A1
Authority
WO
WIPO (PCT)
Prior art keywords
crank
pedal
locking
axis
lever
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/FR1999/001244
Other languages
French (fr)
Inventor
Pierre-Louis Antoine Ponomareff
Pierre Frejaville
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DROMON SA
Original Assignee
DROMON SA
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 DROMON SA filed Critical DROMON SA
Publication of WO1999061305A1 publication Critical patent/WO1999061305A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62KCYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K15/00Collapsible or foldable cycles
    • B62K15/006Collapsible or foldable cycles the frame being foldable
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M3/00Construction of cranks operated by hand or foot
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M3/00Construction of cranks operated by hand or foot
    • B62M3/08Pedals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62KCYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K15/00Collapsible or foldable cycles
    • B62K2015/003Collapsible or foldable cycles having a foldable crank or pedal

Definitions

  • the invention aims to overcome these various drawbacks by proposing a bicycle crank handle making it possible to reduce in a simple manner the size of the bicycle due to the pedals.
  • the subject of the invention is a bicycle crank handle, characterized in that it comprises a first part intended to be fixed to a pedal shaft and a second part intended to carry a pedal and movable by the intermediate an articulation with respect to said first part between an active position in which the pedal is substantially perpendicular to the crank and an inactive position in which the pedal is substantially parallel to the crank
  • the articulation comprises an articulation axis oriented both perpendicular to the axis of the crank and to the axis of the pedal in its active position,
  • Said locking means comprise at least one locking lever carried by said first part and which can pivot about an axis substantially parallel to the axis of the pedal in its active position between a locking position in which a locking end of said lever is engaged in a corresponding groove formed in said second part of the crank and a retracted position in which said second part of the crank can be raised, and releasable holding means of said lever in its locked position,
  • said lever is received in a recess in the first part of the crank, parallel to the axis of the latter,
  • said locking groove has a V shape to facilitate the evacuation of dirt likely to be deposited in this groove
  • said holding means comprise elastic means for returning the lever around its articulation axis in the locked position
  • the lever comprises at its other end opposite the locking end an actuation button
  • the crank comprises two locking levers of said second part arranged on opposite lateral sides of the crank,
  • said elastic return means comprise a compression spring housed in a passage passing through the crank and in contact with the actuating ends of the two levers to maintain the latter in the locked position
  • the said automatic displacement means comprise a helical torsion spring surrounding the articulation axis of the second part and the ends of which are respectively in actuation connection with the first and the second parts,
  • the first part of the crank comprises at its end opposite the second part a flat forming a stop for this second part in the inactive position of the pedal
  • FIG. 1 is a side elevation view of a crank according to the invention with a pedal in the lowered position
  • FIG. 2 is a front elevation view of the crank of FIG. 1 with a partial cutaway
  • FIG 3 is a view identical to that of Figure 1 showing the crank according to the invention with a pedal in the raised position
  • Figures 1 and 2 is shown a crank 1 of bicycle crankset according to the invention
  • This crank 1 comprises on the one hand a first part 3 in which is formed a bore 5 allowing the fixing of this first part 3 to a pedal shaft not shown, and on the other hand a second part 7 carrying a pedal 9
  • This second part 7 is movable by means of an articulation 11 relative to said first part 3 between an active position (shown in FIG. 1), also called the lowered position, in which the pedal 9 is substantially perpendicular to the crank. and an inactive position (shown in FIG. 3), also called the raised position, in which the pedal 9 is substantially parallel to the crank 1
  • the articulation 11 comprises an axis oriented both perpendicular to the axis X-X of the crank and to the axis Y- Y of the pedal 9 in its lowered or active position
  • crank 1 comprises means 13 for locking the second part 7 in its lowered position.
  • These means 13 comprise two locking levers 15 disposed on opposite lateral sides of the crank 1 and received respectively in a obviously 17 formed in the first part 3 of the crank 1 and parallel to the axis XX thereof.
  • Each lever 15 is articulated around an axis 19 substantially parallel to the axis Y-Y of the pedal 9 in its lowered position. Consequently, each lever 15 can pivot between a locking position shown in FIG. 2 in which its locking end 21 is engaged in an associated locking groove 23 formed in the second part 7 of the crank 1, and a retracted position in which the second part 7 of the crank 1 can be raised.
  • the locking groove 23 has a V-shaped cross section to facilitate the evacuation of dirt likely to be deposited in this groove 23.
  • crank comprises means 25 for holding each lever 15 in its locked position.
  • These retaining means 25 comprise elastic means for returning the levers 15 around their axes 19 of articulation in the locked position.
  • These elastic return means comprise a helical compression spring housed in a passage 27 passing through the crank and separating the ends 29 of the levers 15 opposite the locking ends 21.
  • crank further comprises means 33 for automatic displacement of the second part 7 in its raised position.
  • These means 33 comprise a helical spring 35 of torsion surrounding the axis 11 of articulation and the ends of which are respectively in actuating connection, for example by fixing or a simple support, with the first 3 and the second 7 parts of the crank.
  • Spring 35 is prestressed so that it automatically raises the second part 7 of the crank when the two levers 15 are in the retracted position
  • first part 3 of the crank 1 comprises at its end opposite the second part 7, on the pedal side, a flat 37 forming a stop to limit the tilting movement of the pedal 9 and to prevent it from hitting the first part 3 when in the raised position
  • the crank 1 operates in the following manner To raise the pedal 9, the two actuating buttons 31 are pressed simultaneously against the force exerted by the spring 25 This allows the ends 21 of the levers 15 to be released grooves 23 so that by the torque exerted by the spring 35 on the second part 7 of the crank, the latter rocks about its articulation axis 11 towards the raised position shown in FIG. 3
  • the flat forming a stop 37 prevents during this automatic raising, the pedal 9 does not strike the first part 3 of the crank 1
  • the V-shaped groove 23 also has the advantage that it makes it possible to release the pedal 9 in the event of a violent impact thereon, which prevents the user of the bicycle from falling when the pedal 9 touches for example the ground in a bend
  • crank according to the invention makes it possible to reduce the size of a bicycle due to the pedals.
  • crank according to the invention is distinguished by its simplicity of construction, its ease of use and its high degree of security preventing an untimely folding of a pedal.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
  • Transmission Devices (AREA)

Abstract

The invention concerns a bicycle bottom bracket crank (1) comprising a first part (3) to be fixed to a bottom bracket shaft and a second part (7) designed to bear a pedal (9) and mobile via an articulation (11) relative to said first part (3) between an active position wherein the pedal (9) is substantially perpendicular to the crank and an inactive position wherein the pedal (9) is substantially parallel to the crank (1).

Description

MANIVELLE DE PEDALIER DE BICYCLETTE BICYCLE CRANKSET

Les Demandeurs ont constaté que les pédaliers actuellement montés sur des bicyclettes augmentent de façon sensible l'encombrement de celles-ci du fait des pédales portées par des manivelles de pédalier et faisant latéralement saillie de la bicyclette. Ceci constitue un inconvénient en particulier pour leur rangement dans un garage.The Applicants have found that the pedals currently mounted on bicycles significantly increase the size thereof due to the pedals carried by cranks cranks and projecting laterally from the bicycle. This is a drawback in particular for their storage in a garage.

De plus, ils ont constaté que les pédales latéralement en saillie procurent une gêne lorsque l'on pousse la bicyclette, puis que l'on se heurte facilement à la pédale en marchant à côté de la bicycletteIn addition, they found that the laterally protruding pedals cause discomfort when you push the bicycle, and that you easily hit the pedal when you walk next to the bicycle.

L'invention vise à pallier ces divers inconvénients en proposant une manivelle de pédalier de bicyclette permettant de réduire de façon simple l'encombrement de la bicyclette dû aux pédales.The invention aims to overcome these various drawbacks by proposing a bicycle crank handle making it possible to reduce in a simple manner the size of the bicycle due to the pedals.

A cet effet, l'invention a pour objet une manivelle de pédalier de bicyclette, caractérisée en ce qu'elle comprend une première partie destinée à être fixée à un arbre de pédalier et une seconde partie destinée à porter une pédale et déplaçable par l'intermédiaire d'une articulation par rapport à ladite première partie entre une position active dans laquelle la pédale est sensiblement perpendiculaire à la manivelle et une position inactive dans laquelle la pédale est sensiblement parallèle à la manivelleTo this end, the subject of the invention is a bicycle crank handle, characterized in that it comprises a first part intended to be fixed to a pedal shaft and a second part intended to carry a pedal and movable by the intermediate an articulation with respect to said first part between an active position in which the pedal is substantially perpendicular to the crank and an inactive position in which the pedal is substantially parallel to the crank

La manivelle selon l'invention peut de plus comporter une ou plusieurs des caractéristiques suivantes :The crank according to the invention may also include one or more of the following characteristics:

- l'articulation comprend un axe d'articulation orienté à la fois perpendiculaire à l'axe de la manivelle et à l'axe de la pédale dans sa position active,the articulation comprises an articulation axis oriented both perpendicular to the axis of the crank and to the axis of the pedal in its active position,

- elle comporte des moyens de verrouillage de ladite seconde partie dans sa position active,- it comprises means for locking said second part in its active position,

- lesdits moyens de verrouillage comprennent au moins un levier de verrouillage porté par ladite première partie et pouvant pivoter autour d'un axe sensiblement parallèle à l'axe de la pédale dans sa position active entre une position de verrouillage dans laquelle une extrémité de verrouillage dudit levier est engagée dans une gorge correspondante ménagée dans ladite seconde partie de la manivelle et une position escamotée dans laquelle ladite seconde partie de la manivelle peut être relevée, et des moyens de maintien libérables dudit levier dans sa position de verrouillage,- Said locking means comprise at least one locking lever carried by said first part and which can pivot about an axis substantially parallel to the axis of the pedal in its active position between a locking position in which a locking end of said lever is engaged in a corresponding groove formed in said second part of the crank and a retracted position in which said second part of the crank can be raised, and releasable holding means of said lever in its locked position,

- ledit levier est reçu dans un évidement ménagé dans la première partie de la manivelle, parallèle à l'axe de celle-ci,said lever is received in a recess in the first part of the crank, parallel to the axis of the latter,

- ladite gorge de verrouillage possède une forme en V pour faciliter l'évacuation de saletés susceptibles de se déposer dans cette gorge,said locking groove has a V shape to facilitate the evacuation of dirt likely to be deposited in this groove,

- lesdits moyens de maintien comprennent des moyens élastiques de rappel du levier autour de son axe d'articulation en position de verrouillage,said holding means comprise elastic means for returning the lever around its articulation axis in the locked position,

- le levier comporte à son autre extrémité opposée à l'extrémité de verrouillage un bouton d'actionnement,the lever comprises at its other end opposite the locking end an actuation button,

- la manivelle comporte deux leviers de verrouillage de ladite seconde partie disposés sur des côtés latéraux opposés de la manivelle,the crank comprises two locking levers of said second part arranged on opposite lateral sides of the crank,

- lesdits moyens élastiques de rappel comprennent un ressort de compression logé dans un passage traversant de la manivelle et en contact avec les extrémités d'actionnement des deux leviers pour maintenir ceux-ci en position de verrouillage,said elastic return means comprise a compression spring housed in a passage passing through the crank and in contact with the actuating ends of the two levers to maintain the latter in the locked position,

- elle comporte des moyens de déplacement automatique de la seconde partie de la manivelle dans sa position relevée,- it includes means for automatically moving the second part of the crank in its raised position,

- lesdits moyens de déplacement automatique comprennent un ressort hélicoïdal de torsion entourant l'axe d'articulation de la seconde partie et dont les extrémités sont respectivement en liaison d'actionnement avec la première et la seconde parties,the said automatic displacement means comprise a helical torsion spring surrounding the articulation axis of the second part and the ends of which are respectively in actuation connection with the first and the second parts,

- la première partie de la manivelle comprend à son extrémité en regard de la seconde partie un méplat formant butée pour cette seconde partie dans la positon inactive de la pédale D'autres caractéristiques et avantages de l'invention ressortiroπt de la description suivante, donnée à titre d'exemple, sans caractère limitatif, en regard des dessins annexés sur lesquels- The first part of the crank comprises at its end opposite the second part a flat forming a stop for this second part in the inactive position of the pedal Other characteristics and advantages of the invention emerge from the following description, given by way of example, without limitation, with reference to the appended drawings in which

La figure 1 est une vue en élévation latérale d'une manivelle selon l'invention avec une pédale en position abaissée,FIG. 1 is a side elevation view of a crank according to the invention with a pedal in the lowered position,

La figure 2 est une vue en élévation frontale de la manivelle de la figure 1 avec un arrachement partiel, etFIG. 2 is a front elevation view of the crank of FIG. 1 with a partial cutaway, and

La figure 3 est une vue identique à celle de la figure 1 montrant la manivelle selon l'invention avec une pédale en position relevée Sur les figures 1 et 2 est représentée une manivelle 1 de pédalier de bicyclette selon l'inventionFigure 3 is a view identical to that of Figure 1 showing the crank according to the invention with a pedal in the raised position In Figures 1 and 2 is shown a crank 1 of bicycle crankset according to the invention

Cette manivelle 1 comprend d'une part une première partie 3 dans laquelle est ménagé un alésage 5 permettant la fixation de cette première partie 3 à un arbre de pédalier non représenté, et d'autre part une seconde partie 7 portant une pédale 9This crank 1 comprises on the one hand a first part 3 in which is formed a bore 5 allowing the fixing of this first part 3 to a pedal shaft not shown, and on the other hand a second part 7 carrying a pedal 9

Cette seconde partie 7 est déplaçable par l'intermédiaire d'une articulation 11 par rapport à ladite première partie 3 entre une position active (représentée sur la figure 1 ), également appelée position abaissée, dans laquelle la pédale 9 est sensiblement perpendiculaire à la manivelle et une position inactive (représentée sur la figure 3), également appelée position relevée, dans laquelle la pédale 9 est sensiblement parallèle à la manivelle 1This second part 7 is movable by means of an articulation 11 relative to said first part 3 between an active position (shown in FIG. 1), also called the lowered position, in which the pedal 9 is substantially perpendicular to the crank. and an inactive position (shown in FIG. 3), also called the raised position, in which the pedal 9 is substantially parallel to the crank 1

Ainsi que l'on voit sur les figures, l'articulation 11 comprend un axe orienté à la fois perpendiculaire à l'axe X-X de la manivelle et à l'axe Y- Y de la pédale 9 dans sa position abaissée ou activeAs can be seen in the figures, the articulation 11 comprises an axis oriented both perpendicular to the axis X-X of the crank and to the axis Y- Y of the pedal 9 in its lowered or active position

En outre, la manivelle 1 comprend des moyens 13 de verrouillage de la seconde partie 7 dans sa position abaissée Ces moyens 13 comprennent deux leviers de verrouillage 15 disposés sur des côtés latéraux opposés de la manivelle 1 et reçus respectivement dans un évidemment 17 ménagé dans la première partie 3 de la manivelle 1 et parallèle à l'axe X-X de celle-ci.In addition, the crank 1 comprises means 13 for locking the second part 7 in its lowered position. These means 13 comprise two locking levers 15 disposed on opposite lateral sides of the crank 1 and received respectively in a obviously 17 formed in the first part 3 of the crank 1 and parallel to the axis XX thereof.

Chaque levier 15 est articulé autour d'un axe 19 sensiblement parallèle à l'axe Y-Y de la pédale 9 dans sa position abaissée. Par conséquent, chaque levier 15 peut pivoter entre une position de verrouillage représentée sur la figure 2 dans laquelle son extrémité de verrouillage 21 est engagée dans une gorge 23 de verrouillage associée ménagée dans la seconde partie 7 de la manivelle 1 , et une position escamotée dans laquelle la seconde partie 7 de la manivelle 1 peut être relevée.Each lever 15 is articulated around an axis 19 substantially parallel to the axis Y-Y of the pedal 9 in its lowered position. Consequently, each lever 15 can pivot between a locking position shown in FIG. 2 in which its locking end 21 is engaged in an associated locking groove 23 formed in the second part 7 of the crank 1, and a retracted position in which the second part 7 of the crank 1 can be raised.

Avantageusement, la gorge 23 de verrouillage possède une section transversale en V pour faciliter l'évacuation des saletés susceptibles de se déposer dans cette gorge 23.Advantageously, the locking groove 23 has a V-shaped cross section to facilitate the evacuation of dirt likely to be deposited in this groove 23.

De plus, la manivelle comprend des moyens 25 de maintien de chaque levier 15 dans sa position de verrouillage. Ces moyens 25 de maintien comprennent des moyens élastiques de rappel des leviers 15 autour de leurs axes 19 d'articulation dans la position de verrouillage. Ces moyens élastiques de rappel comprennent un ressort hélicoïdal de compression logé dans un passage 27 traversant la manivelle et écartant les extrémités 29 des leviers 15 opposées aux extrémités 21 de verrouillage.In addition, the crank comprises means 25 for holding each lever 15 in its locked position. These retaining means 25 comprise elastic means for returning the levers 15 around their axes 19 of articulation in the locked position. These elastic return means comprise a helical compression spring housed in a passage 27 passing through the crank and separating the ends 29 of the levers 15 opposite the locking ends 21.

Pour faciliter l'actionπement des leviers 15, ceux-ci comportent à leurs extrémités 29 respectives un bouton d'actionnement 31.To facilitate the action of the levers 15, these have at their respective ends 29 an actuation button 31.

Par ailleurs, comme on le voit sur les figures 1 et 2, la manivelle comporte en outre des moyens 33 de déplacement automatique de la seconde partie 7 dans sa position relevée.Furthermore, as seen in Figures 1 and 2, the crank further comprises means 33 for automatic displacement of the second part 7 in its raised position.

Ces moyens 33 comprennent un ressort hélicoïdal 35 de torsion entourant l'axe 11 d'articulation et dont les extrémités sont respectivement en liaison d'actionnement, par exemple par fixation ou un simple appui, avec la première 3 et la seconde 7 parties de la manivelle. Le ressort 35 est précontraint de telle manière qu'il relève automatiquement la seconde partie 7 de la manivelle lorsque les deux leviers 15 sont en position escamotéeThese means 33 comprise a helical spring 35 of torsion surrounding the axis 11 of articulation and the ends of which are respectively in actuating connection, for example by fixing or a simple support, with the first 3 and the second 7 parts of the crank. Spring 35 is prestressed so that it automatically raises the second part 7 of the crank when the two levers 15 are in the retracted position

En outre, la première partie 3 de la manivelle 1 comprend à son extrémité en regard de la seconde partie 7, côté pédale, un méplat 37 formant butée pour limiter le mouvement de basculement de la pédale 9 et pour éviter que celle-ci ne heurte la première partie 3 lorsqu'elle est en position relevéeIn addition, the first part 3 of the crank 1 comprises at its end opposite the second part 7, on the pedal side, a flat 37 forming a stop to limit the tilting movement of the pedal 9 and to prevent it from hitting the first part 3 when in the raised position

La manivelle 1 selon l'invention fonctionne de la manière suivante Pour relever la pédale 9, on appuie simultanément sur les deux boutons d'actionnement 31 à encontre de la force exercée par le ressort 25 Ceci permet de dégager les extrémités 21 des leviers 15 des gorges 23 de sorte que par le couple exercé par le ressort 35 sur la seconde partie 7 de la manivelle, celle-ci bascule autour de son axe d'articulation 11 vers la position relevée représentée sur la figure 3 Le méplat formant butée 37 empêche que lors de ce relèvement automatique, la pédale 9 ne heurte la première partie 3 de la manivelle 1The crank 1 according to the invention operates in the following manner To raise the pedal 9, the two actuating buttons 31 are pressed simultaneously against the force exerted by the spring 25 This allows the ends 21 of the levers 15 to be released grooves 23 so that by the torque exerted by the spring 35 on the second part 7 of the crank, the latter rocks about its articulation axis 11 towards the raised position shown in FIG. 3 The flat forming a stop 37 prevents during this automatic raising, the pedal 9 does not strike the first part 3 of the crank 1

Grâce à cette position relevée qui réduit l'encombrement de la bicyclette dû aux pédales, un utilisateur peut ranger une bicyclette équipée d'une manivelle selon l'invention beaucoup plus facilement qu'une bicyclette équipée de manivelles classiques De plus, il n'y a plus de risque qu'il se prenne la pédale 9 dans le tibia quand il pousse sa bicycletteThanks to this raised position which reduces the size of the bicycle due to the pedals, a user can store a bicycle fitted with a crank according to the invention much more easily than a bicycle fitted with conventional cranks. is more likely to take pedal 9 in the shin when he pushes his bicycle

Par ailleurs, la gorge 23 en V présente en outre l'avantage qu'elle permet de libérer la pédale 9 en cas de choc violent sur celle-ci, ce qui évite à l'utilisateur de la bicyclette une chute lorsque la pédale 9 touche par exemple le sol dans un virageFurthermore, the V-shaped groove 23 also has the advantage that it makes it possible to release the pedal 9 in the event of a violent impact thereon, which prevents the user of the bicycle from falling when the pedal 9 touches for example the ground in a bend

Bien entendu pour verrouiller la seconde partie 7 dans sa position abaissée, il suffit d'un seul levier 15 de verrouillage Mais la disposition décrite avec deux leviers 15 présente l'avantage d'assurer une meilleure sécurité, car on empêche un repli intempestif de la pédale 9 causé par exemple par un choc sur un seul des deux leviers 15.Of course, to lock the second part 7 in its lowered position, a single locking lever 15 is sufficient. However, the arrangement described with two levers 15 has the advantage of ensuring better security, because an untimely folding of the pedal 9 is prevented, caused for example by a shock on only one of the two levers 15.

Pour abaisser la pédale 9, on exerce tout simplement une force sur la pédale à encontre de la force exercée par le ressort 35 jusqu'à ce que les extrémités 21 des leviers 15 s'engagent automatiquement, par la pression exercée par le ressort 25 dans les gorges 23.To lower the pedal 9, a force is simply exerted on the pedal against the force exerted by the spring 35 until the ends 21 of the levers 15 engage automatically, by the pressure exerted by the spring 25 in the gorges 23.

On comprend donc que la manivelle selon l'invention permet de réduire l'encombrement d'une bicyclette dû aux pédales.It is therefore understood that the crank according to the invention makes it possible to reduce the size of a bicycle due to the pedals.

La manivelle selon l'invention se distingue par sa simplicité de construction, sa facilité d'usage et son degré de sécurité élevé empêchant un repli intempestif d'une pédale. The crank according to the invention is distinguished by its simplicity of construction, its ease of use and its high degree of security preventing an untimely folding of a pedal.

Claims

REVENDICATIONS 1 Manivelle (1 ) de pédalier de bicyclette, caractérisée en ce qu'elle comprend une première partie (3) destinée à être fixée à un arbre de pédalier et une seconde partie (7) destinée à porter une pédale (9) et déplaçable par l'intermédiaire d'une articulation (11 ) par rapport à ladite première partie (3) entre une position active dans laquelle la pédale (9) est sensiblement perpendiculaire à la manivelle et une position inactive dans laquelle la pédale (9) est sensiblement parallèle à la manivelle (1 )1 bicycle crank (1), characterized in that it comprises a first part (3) intended to be fixed to a pedal shaft and a second part (7) intended to carry a pedal (9) and movable by via a joint (11) relative to said first part (3) between an active position in which the pedal (9) is substantially perpendicular to the crank and an inactive position in which the pedal (9) is substantially parallel crank (1) 2 Manivelle selon la revendication 1 , caractérisée en ce que l'articulation comprend un axe d'articulation (11 ) orienté à la fois perpendiculaire à l'axe (X-X) de la manivelle (1 ) et à t'axe (Y-Y) de la pédale (9) dans sa position active2 Crank according to claim 1, characterized in that the articulation comprises an articulation axis (11) oriented both perpendicular to the axis (XX) of the crank (1) and to the axis (YY) of the pedal (9) in its active position 3 Manivelle selon la revendication 1 ou 2, caractérisée en ce qu'elle comporte des moyens (13) de verrouillage de ladite seconde partie (7) dans sa position active3 Crank according to claim 1 or 2, characterized in that it comprises means (13) for locking said second part (7) in its active position 4 Manivelle selon l'une quelconque des revendications 1 à 3, caractérisée en ce lesdits moyens (13) de verrouillage comprennent au moins un levier (15) de verrouillage porté par ladite première partie (3) et pouvant pivoter autour d'un axe (19) sensiblement parallèle à l'axe (Y-Y) de la pédale (9) dans sa position active entre une position de verrouillage dans laquelle une extrémité de verrouillage dudit levier (15) est engagée dans une gorge (23) correspondante ménagée dans ladite seconde partie (7) de la manivelle (1 ) et une position escamotée dans laquelle ladite seconde partie (7) de la manivelle (1 ) peut être relevée, et des moyens (25) de maintien libérables dudit levier (15) dans sa position de verrouillage4 Crank according to any one of claims 1 to 3, characterized in that said locking means (13) comprise at least one locking lever (15) carried by said first part (3) and able to pivot about an axis ( 19) substantially parallel to the axis (YY) of the pedal (9) in its active position between a locking position in which a locking end of said lever (15) is engaged in a corresponding groove (23) formed in said second part (7) of the crank (1) and a retracted position in which said second part (7) of the crank (1) can be raised, and means (25) for releasably holding said lever (15) in its position locking 5 Manivelle selon la revendication 4, caractérisée en ce que ledit levier (15) est reçu dans un évidement (17) ménagé dans la première partie (3) de la manivelle (1 ), parallèle à l'axe (X-X) de celle-ci 5 Crank according to claim 4, characterized in that said lever (15) is received in a recess (17) formed in the first part (3) of the crank (1), parallel to the axis (XX) thereof- this 6. Manivelle selon la revendication 4 ou 5, caractérisée en ce que ladite gorge (23) de verrouillage possède une forme en V pour faciliter l'évacuation de saletés susceptibles de se déposer dans cette gorge (23).6. Crank according to claim 4 or 5, characterized in that said locking groove (23) has a V shape to facilitate the evacuation of dirt liable to be deposited in this groove (23). 7. Manivelle selon l'une quelconque des revendications 4 à 6, caractérisée en ce que lesdits moyens de maintien comprennent des moyens (25) élastiques de rappel du levier (15) autour de son axe d'articulation (19) en position de verrouillage.7. Crank according to any one of claims 4 to 6, characterized in that said holding means comprise means (25) elastic return of the lever (15) around its axis of articulation (19) in the locked position . 8. Manivelle selon la revendication 7, caractérisée en ce que le levier (15) comporte à son autre extrémité (29) opposée à l'extrémité de verrouillage (21 ) un bouton d'actionnement (31 ).8. Crank according to claim 7, characterized in that the lever (15) has at its other end (29) opposite the locking end (21) an actuating button (31). 9. Manivelle selon l'une quelconque des revendications 4 à 8, caractérisée en ce qu'elle comporte deux leviers (15) de verrouillage de ladite seconde partie (7) disposés sur des côtés latéraux opposés de la manivelle (1 ). 9. Crank according to any one of claims 4 to 8, characterized in that it comprises two levers (15) for locking said second part (7) arranged on opposite lateral sides of the crank (1). 10. Manivelle selon la revendication 7 ou 8 prise ensemble avec la revendication 9, caractérisée en ce lesdits moyens élastiques de rappel comprennent un ressort (25) de compression logé dans un passage traversant (27) de la manivelle (1 ) et en contact avec les extrémités d'actionnement (29) des deux leviers (15) pour maintenir ceux-ci en position de verrouillage.10. Crank according to claim 7 or 8 taken together with claim 9, characterized in that said elastic return means comprise a compression spring (25) housed in a through passage (27) of the crank (1) and in contact with the actuating ends (29) of the two levers (15) to hold them in the locked position. 11. Manivelle selon l'une quelconque des revendications 1 à 10, caractérisée en ce qu'elle comporte des moyens (33) de déplacement automatique de la seconde partie de la manivelle dans sa position relevée.11. Crank according to any one of claims 1 to 10, characterized in that it comprises means (33) for automatic displacement of the second part of the crank in its raised position. 12. Manivelle selon la revendication 11 , caractérisée en ce que lesdits moyens de déplacement automatique (33) comprennent un ressort hélicoïdal (35) de torsion entourant l'axe d'articulation (11 ) de la seconde partie (7) et dont les extrémités sont respectivement en liaison d'actionnement avec la première (3) et la seconde (7) parties. 12. Crank according to claim 11, characterized in that said automatic displacement means (33) comprise a helical spring (35) of torsion surrounding the articulation axis (11) of the second part (7) and whose ends are respectively in actuation connection with the first (3) and the second (7) parts. 13. Manivelle selon l'une quelconque des revendications 1 à 12, caractérisée en ce que la première partie (3) de la manivelle comprend à son extrémité en regard de la seconde partie (7) un méplat (37) formant butée pour cette seconde partie (7) dans la positon inactive de la pédale. 13. Crank according to any one of claims 1 to 12, characterized in that the first part (3) of the crank comprises at its end opposite the second part (7) a flat (37) forming a stop for this second part (7) in the inactive position of the pedal.
PCT/FR1999/001244 1998-05-27 1999-05-27 Bicycle bottom bracket crank Ceased WO1999061305A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9806682A FR2779115A1 (en) 1998-05-27 1998-05-27 BICYCLE CRANKSET
FR98/06682 1998-05-27

Publications (1)

Publication Number Publication Date
WO1999061305A1 true WO1999061305A1 (en) 1999-12-02

Family

ID=9526768

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1999/001244 Ceased WO1999061305A1 (en) 1998-05-27 1999-05-27 Bicycle bottom bracket crank

Country Status (2)

Country Link
FR (1) FR2779115A1 (en)
WO (1) WO1999061305A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100425503C (en) * 2006-07-03 2008-10-15 王欢 Folding pedal mechanism of bicycle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2999146A1 (en) * 2012-12-07 2014-06-13 Decathlon Sa Collapsible pedal for bicycle, has spring unit arranged towards one of usage position and arrangement position, and set of torsion springs arranged with respective bodies and end portions mounted respectively to plate and attaching part

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2200990A1 (en) * 1972-01-10 1973-07-26 Josef Glade BICYCLE PEDAL IN COMBINATION WITH THE BOTTOM BRACKET CRANK
FR2726803A1 (en) * 1994-11-15 1996-05-15 Grare Eric Pedal mount arrangement for cycles etc.
EP0718183A1 (en) * 1994-12-20 1996-06-26 DI BLASI S.r.l. Foldable pedal, in particular for bicycles, motor bicycles and the like

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2200990A1 (en) * 1972-01-10 1973-07-26 Josef Glade BICYCLE PEDAL IN COMBINATION WITH THE BOTTOM BRACKET CRANK
FR2726803A1 (en) * 1994-11-15 1996-05-15 Grare Eric Pedal mount arrangement for cycles etc.
EP0718183A1 (en) * 1994-12-20 1996-06-26 DI BLASI S.r.l. Foldable pedal, in particular for bicycles, motor bicycles and the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100425503C (en) * 2006-07-03 2008-10-15 王欢 Folding pedal mechanism of bicycle

Also Published As

Publication number Publication date
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