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FR2978724A1 - Anti-derailment system for e.g. bicycle to avoid derailment of chain with respect to interior/external plate, has interior plate connected to external plate by lower pin and upper pin, where plates are not parallel to each other - Google Patents

Anti-derailment system for e.g. bicycle to avoid derailment of chain with respect to interior/external plate, has interior plate connected to external plate by lower pin and upper pin, where plates are not parallel to each other Download PDF

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Publication number
FR2978724A1
FR2978724A1 FR1102454A FR1102454A FR2978724A1 FR 2978724 A1 FR2978724 A1 FR 2978724A1 FR 1102454 A FR1102454 A FR 1102454A FR 1102454 A FR1102454 A FR 1102454A FR 2978724 A1 FR2978724 A1 FR 2978724A1
Authority
FR
France
Prior art keywords
plate
derailment
chain
interior
pin
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.)
Withdrawn
Application number
FR1102454A
Other languages
French (fr)
Inventor
Romain Boireaux
Pierre Geoffroy Plantet
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.)
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Original Assignee
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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 SHIFT UP ENGINEERING filed Critical SHIFT UP ENGINEERING
Priority to FR1102454A priority Critical patent/FR2978724A1/en
Publication of FR2978724A1 publication Critical patent/FR2978724A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
    • B62M9/131—Front derailleurs
    • B62M9/136—Chain guides; Mounting thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
    • B62M9/131—Front derailleurs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
    • B62M9/131—Front derailleurs
    • B62M9/134—Mechanisms for shifting laterally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/16—Tensioning or adjusting equipment for chains, belts or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

The system has a clamp (6) connected to a frame of a bicycle and to an interior plate (1). The interior plate is connected to an external plate (2) by a lower pin (3) and an upper pin (4), where the interior plate and the external plate are not parallel to each other. The interior plate is located parallel to a chain (7) when the interior plate is placed on a large back pinion. The external plate is located parallel to the chain when the external plate is placed on a small back pinion. A rubber washer is placed between the interior plate/external plate and the upper pin/lower pin. The rubber washer is placed between the interior plate/external plate and the upper pin/lower pin to compensate non-orthogonality between the upper pin/lower pin and the interior plate/external plate.

Description

L'invention concerne un système qui se fixe sur un vélo et qui permet d'éviter le déraillement de la chaîne par rapport au plateau. The invention relates to a system which is fixed on a bicycle and which makes it possible to avoid the derailment of the chain relative to the plate.

Sur les vélos tout terrain (VTT), le cycliste entraîne la roue arrière via le pédalier, les plateaux, la chaîne et les pignons. Durant la circulation sur un terrain accidenté, il arrive que la chaîne déraille du plateau. Pour y remédier, il existe des systèmes qui obligent la chaîne à rester sur le plateau et évite le déraillement. On mountain bikes, the cyclist drives the rear wheel via the pedals, trays, chain and sprockets. During traffic on rough terrain, sometimes the chain derails off the board. To remedy this, there are systems that force the chain to stay on the board and avoid derailment.

On connaît des systèmes d'anti-déraillement qui se positionnent au point de rencontre supérieur entre la chaîne et le plateau et qui sont constitués de deux plaques parallèles qui entourent la chaîne : la plaque intérieure est située vers le cadre et la plaque extérieure est située vers la manivelle. Les deux plaques sont reliées par des ergots, l'un au dessus de la chaîne et l'autre en dessous de la chaîne pour éviter que celle-ci ne puisse sortir du périmètre d'action des plaques. Anti-derailment systems are known which are positioned at the upper meeting point between the chain and the plate and consist of two parallel plates which surround the chain: the inner plate is located towards the frame and the outer plate is located towards the crank. The two plates are connected by lugs, one above the chain and the other below the chain to prevent it from leaving the scope of action of the plates.

Ce type de système anti-déraillement ne donne pas entière satisfaction, en ce que la chaîne prend un angle différent par rapport au plateau en fonction du pignon arrière qui est utilisé. Cela oblige à augmenter la distance entre les deux plaques pour ne pas que celles-ci touchent la chaîne et augmente les chances de déraillement. This type of anti-derailment system is not entirely satisfactory, in that the chain takes a different angle with respect to the plate depending on the rear pinion is used. This makes it necessary to increase the distance between the two plates so that they do not touch the chain and increases the chances of derailment.

L'invention vise à perfectionner l'art antérieur en proposant notamment un système d'anti-déraillement constitué de deux plaques et deux ergots permettant de diminuer les chances de déraillement. Les deux plaques ne sont plus parallèles mais avec un angle relatif inférieur à 180° entre celles-ci. The invention aims to improve the prior art by proposing in particular an anti-derailment system consisting of two plates and two lugs to reduce the chances of derailment. The two plates are no longer parallel but with a relative angle of less than 180 ° between them.

A cet effet, l'invention propose un système d'anti-déraillement selon la revendication 1, comprenant un collier de serrage 6, une plaque intérieure 1, une plaque extérieure 2, ledit collier de serrage 6 étant relié d'une part au cadre du vélo et d'autre part à la plaque intérieure 1 , ladite plaque intérieure 1 étant reliée à la plaque extérieure 2 par un ergot inférieur 3 et un ergot supérieur 4, caractérisé en ce que les plaques 1 et 2 ne sont pas parallèles. Les plaques 1 et 2 forment ainsi un angle relatif inférieur à 180° entre elles. For this purpose, the invention provides an anti-derailment system according to claim 1, comprising a clamp 6, an inner plate 1, an outer plate 2, said clamp 6 being connected on the one hand to the frame of the bicycle and secondly to the inner plate 1, said inner plate 1 being connected to the outer plate 2 by a lower pin 3 and an upper pin 4, characterized in that the plates 1 and 2 are not parallel. The plates 1 and 2 thus form a relative angle less than 180 ° between them.

En particulier, la plaque intérieure 1 est positionnée de telle sorte qu'elle soit parallèle à la chaîne lorsque celle-ci est sur le grand pignon arrière et dont la plaque extérieure 2 est positionnée de telle sorte qu'elle soit parallèle à la chaîne quand celle-ci est sur le petit pignon. Pour créer cet angle entre les plaques, l'ergot inférieur 3 - qui est en dessous de la chaîne et en arrière - est plus long que l'ergot supérieur 4 - qui est au dessus de la chaîne et en avant. In particular, the inner plate 1 is positioned so that it is parallel to the chain when it is on the large rear pinion and the outer plate 2 is positioned so that it is parallel to the chain when this one is on the small gable. To create this angle between the plates, the lower pin 3 - which is below the chain and back - is longer than the upper pin 4 - which is above the chain and forward.

Pour compenser le fait que les ergots ne sont pas orthogonaux aux plaques, on ajoute à chaque extrémité de ceux-ci une rondelle en caoutchouc (5a, 5b, 5c et 5d), ce qui permet de rendre l'articulation entre la plaque et l'ergot flexible. To compensate for the fact that the lugs are not orthogonal to the plates, at each end thereof is added a rubber washer (5a, 5b, 5c and 5d), which makes it possible to make the articulation between the plate and the plate. flexible lug.

D'autres particularités et avantages de l'invention apparaîtront dans la 15 description qui suit, faite en référence aux figures annexées, dans lesquelles : la figure 1 représente un mode de réalisation de l'invention ; - la figure 2 représente une vue de dessus du système d'anti-déraillement avec les pignons arrières; - la figure 3 représente une vue éclatée du système d'anti-déraillement ; 20 En relation avec ces figures, on décrit ci-dessous un système d'antidéraillement composé d'un collier de fixation sur le cadre 6, d'une plaque intérieure 1, d'une plaque extérieure 2, d'un ergot inférieur 3, d'un ergot supérieur 4 et de quatre rondelles en caoutchouc 5a, 5b, 5c et 5d. 25 Other features and advantages of the invention will appear in the description which follows, made with reference to the appended figures, in which: FIG. 1 represents an embodiment of the invention; - Figure 2 shows a top view of the anti-derailment system with the rear gears; FIG. 3 represents an exploded view of the anti-derailment system; In connection with these figures, an anti-erosion system composed of a fastening collar on the frame 6, an inner plate 1, an outer plate 2, a lower pin 3, is described below. an upper lug 4 and four rubber washers 5a, 5b, 5c and 5d. 25

Sur la figure 1, on peut voir le collier de fixation 6 qui permet de maintenir le système d'anti-déraillement sur le cadre d'une part et de maintenir la plaque intérieure 1 d'autre part. La plaque intérieure 1 et la plaque extérieure 2 sont 30 reliées entre elles par un ergot inférieur 3 et un ergot supérieur 4. L'ergot inférieur 3 est positionné de telle sorte que la chaîne 7 passe au dessus de celui-ci et l'ergot supérieur 4 est positionné de telle sorte que la chaîne 7 passe en dessous de celui-ci. In Figure 1, we can see the clamp 6 which keeps the anti-derailment system on the frame on the one hand and maintain the inner plate 1 on the other. The inner plate 1 and the outer plate 2 are interconnected by a lower lug 3 and an upper lug 4. The lower lug 3 is positioned so that the chain 7 passes over it and the lug upper 4 is positioned so that the chain 7 passes below it.

Sur la figure 2, on peut voir la plaque intérieure qui est parallèle à la chaîne quand celle-ci est sur le grand pignon 8 et la plaque extérieure qui est parallèle 5 à la chaîne quand celle-ci est sur le petit pignon 9. In FIG. 2, the inner plate which is parallel to the chain when it is on the large pinion 8 and the outer plate which is parallel to the chain when it is on the small pinion 9 can be seen.

Sur la figure 3, on peut voir les rondelles 5a, 5b, 5c et 5d qui se place entre chaque extrémité d'ergots et la plaque correspondante pour assurer une liaison ~o flexible et compenser la non orthogonalité entre l'ergot et la plaque. In Figure 3, we can see the washers 5a, 5b, 5c and 5d which is placed between each end of pins and the corresponding plate to provide a flexible connection ~ o and compensate for non-orthogonality between the pin and the plate.

Le système d'anti-déraillement décrit ci-dessus peut être utilisé sur tout type de vélo : vélo tout terrain, vélo de route, vélo de cyclo-cross, vélo de piste, vélo de 15 ville, vélo électrique. The anti-derailment system described above can be used on any type of bike: mountain bike, road bike, cyclo-cross bike, track bike, city bike, electric bike.

Claims (7)

REVENDICATIONS1. Système d'anti-déraillement pour vélo qui comprend un collier de serrage 6, d'une plaque intérieure 1, d'une plaque extérieure 2, ledit collier de serrage 6 étant relié d'une part au cadre du vélo et d'autre part à la plaque intérieure 1 , ladite plaque intérieure 1 étant reliée à la plaque extérieure 2 par un ergot inférieur 3 et un ergot supérieur 4, caractérisé en ce que les plaques 1 et 2 ne sont pas parallèles. REVENDICATIONS1. Bicycle anti-derailment system which comprises a clamp 6, an inner plate 1, an outer plate 2, said clamp 6 being connected on the one hand to the bicycle frame and on the other hand to the inner plate 1, said inner plate 1 being connected to the outer plate 2 by a lower pin 3 and an upper pin 4, characterized in that the plates 1 and 2 are not parallel. 2. Système d'anti-déraillement selon la revendication 1, caractérisé en ce que la plaque intérieure 1 est sensiblement parallèle à la chaîne lorsque celle-ci est sur le grand pignon arrière. 2. Anti-derailment system according to claim 1, characterized in that the inner plate 1 is substantially parallel to the chain when it is on the large rear pinion. 3. Système d'anti-déraillement selon la revendication 2, caractérisé en ce que la plaque extérieure 2 est sensiblement parallèle à la chaîne lorsque celle-ci est sur le petit pignon arrière. 3. Anti-derailment system according to claim 2, characterized in that the outer plate 2 is substantially parallel to the chain when it is on the small rear sprocket. 4. Système d'anti-déraillement selon la revendication 3, caractérisé en ce qu'il y ait au moins une rondelle en caoutchouc 5 entre l'un quelconque des ergots 3 et 4 et l'une quelconque des plaques 1 et 2 pour compenser la non-orthogonalité entre ledit ergot et ladite plaque. 4. Anti-derailment system according to claim 3, characterized in that there is at least one rubber washer 5 between any one of the pins 3 and 4 and any one of the plates 1 and 2 to compensate the non-orthogonality between said pin and said plate. 5. Système d'anti-déraillement selon la revendication 4, caractérisé en ce que 25 l'ergot inférieur 3 est placé de telle sorte que la chaîne passe au dessus dudit ergot. 5. anti-derailment system according to claim 4, characterized in that the lower pin 3 is placed so that the chain passes above said pin. 6. Système d'anti-déraillement selon la revendication 5, caractérisé en ce que l'ergot supérieur 4 est placé de telle sorte que la chaîne passe en dessous dudit 30 ergot. 6. anti-derailment system according to claim 5, characterized in that the upper pin 4 is placed so that the chain passes below said pin. 7. Vélo comprenant un système d'anti-déraillement selon l'une quelconque des revendications 1 à 6. Bicycle comprising an anti-derailment system according to any one of claims 1 to 6.
FR1102454A 2011-08-04 2011-08-04 Anti-derailment system for e.g. bicycle to avoid derailment of chain with respect to interior/external plate, has interior plate connected to external plate by lower pin and upper pin, where plates are not parallel to each other Withdrawn FR2978724A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1102454A FR2978724A1 (en) 2011-08-04 2011-08-04 Anti-derailment system for e.g. bicycle to avoid derailment of chain with respect to interior/external plate, has interior plate connected to external plate by lower pin and upper pin, where plates are not parallel to each other

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1102454A FR2978724A1 (en) 2011-08-04 2011-08-04 Anti-derailment system for e.g. bicycle to avoid derailment of chain with respect to interior/external plate, has interior plate connected to external plate by lower pin and upper pin, where plates are not parallel to each other

Publications (1)

Publication Number Publication Date
FR2978724A1 true FR2978724A1 (en) 2013-02-08

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FR1102454A Withdrawn FR2978724A1 (en) 2011-08-04 2011-08-04 Anti-derailment system for e.g. bicycle to avoid derailment of chain with respect to interior/external plate, has interior plate connected to external plate by lower pin and upper pin, where plates are not parallel to each other

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Country Link
FR (1) FR2978724A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1118883A (en) * 1955-01-06 1956-06-12 Improvements to chain derailleurs
FR2287376A1 (en) * 1974-10-11 1976-05-07 Juy Lucien Transverse chain displacement guide for bicycle speed change - has fork with spring and bolt adjusting side face clearance
FR2521656A1 (en) * 1982-02-12 1983-08-19 Huret & Fils DEVICE FOR FIXING THE TWO WINGS OF A CRANKSET FOR A BICYCLE
US20070123379A1 (en) * 2005-11-28 2007-05-31 Shimano Singapore Pte, Ltd. Bicycle front derailleur with angle adjustment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1118883A (en) * 1955-01-06 1956-06-12 Improvements to chain derailleurs
FR2287376A1 (en) * 1974-10-11 1976-05-07 Juy Lucien Transverse chain displacement guide for bicycle speed change - has fork with spring and bolt adjusting side face clearance
FR2521656A1 (en) * 1982-02-12 1983-08-19 Huret & Fils DEVICE FOR FIXING THE TWO WINGS OF A CRANKSET FOR A BICYCLE
US20070123379A1 (en) * 2005-11-28 2007-05-31 Shimano Singapore Pte, Ltd. Bicycle front derailleur with angle adjustment

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