FR2721894A1 - Protection cover for chainless bicycle rear wheel conical gearing - Google Patents

Protection cover for chainless bicycle rear wheel conical gearing Download PDF

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Publication number
FR2721894A1
FR2721894A1 FR9408433A FR9408433A FR2721894A1 FR 2721894 A1 FR2721894 A1 FR 2721894A1 FR 9408433 A FR9408433 A FR 9408433A FR 9408433 A FR9408433 A FR 9408433A FR 2721894 A1 FR2721894 A1 FR 2721894A1
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FR
France
Prior art keywords
cover
rear wheel
axle
bicycle rear
protection cover
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.)
Pending
Application number
FR9408433A
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French (fr)
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Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR9408433A priority Critical patent/FR2721894A1/en
Publication of FR2721894A1 publication Critical patent/FR2721894A1/en
Pending legal-status Critical Current

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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
    • B62M17/00—Transmissions characterised by use of rotary shaft, e.g. cardan shaft
    • 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
    • B62J23/00—Other protectors specially adapted for cycles

Abstract

The cover for a conical gear transmission mounted on a bicycle rear wheel has its first part (3) fixed to the inside of the rear fork right branch. The second hemispherical part (12) pivots on the first part by means of the spindle (10) and is closed onto it by means of a pin (11) fastening into the rear wheel axle (2). When the cover is closed it totally encloses the two conical transmission gears. Near the rear wheel axle, against the lower wall of the end of the right branch of the rear fork, the edge of the cover (9) partially encloses the gearing (1). The edge of the cover and its continuation form a circumference which is perfectly encastred around half of the axle without touching the axle on the side of the wheel where the hub rotates.

Description

La.présente invention concerne un dispositif pour recouvrir et protéger une transmission cônique montée au niveau de la roue arrière a'une bicyclette sans chaise.  The present invention relates to a device for covering and protecting a conical transmission mounted at the rear wheel on a bicycle without a chair.

Ce dispositif accompagne le dispositif mis au point par le brevet français numéro 91 I2I56, pour la construction d'un vélo sans chaine. This device accompanies the device developed by French patent number 91 I2I56, for the construction of a chainless bicycle.

Les dessins annexés illustrent l'invention
La figure I représente, vu du côté gauche, un vélo sans chaste équipé d'une transmission à engrenages côniques pour la roue arrière au côté droit. Sur cette figure I, on n'a pas représenté ni la roue arrière, ni la branche gauche de la fourche arrière. la branche droite de la fourche arrière est agrandie par rapport au reste de la bicyclette. Le boiter mécanique du pédalier (8) est relié à la transmission cônique de la fourche arrière par l'arbre de transmission (5).The accompanying drawings illustrate the invention
Figure I shows, seen from the left side, a chaste bike fitted with a bevel gear transmission for the rear wheel on the right side. In this figure I, neither the rear wheel nor the left branch of the rear fork has been shown. the right branch of the rear fork is enlarged compared to the rest of the bicycle. The mechanical pedal box (8) is connected to the tapered transmission of the rear fork by the transmission shaft (5).

la figure 2, dessinée selon le même plan que la figure I, représente en plus grand l'extrémité de la branche droite de la fourche arrière (7). Sur cette figure 2, un rectangle dessiné matérialise la base d'un couvercle t3) fixé sur la branche droite de la fourche arrière (7). Le rôle de ce couvercle (3) est de recouvrir et de protéger l'engrenage cônicue (I) avec son support (4)? sans être en contact avec l'engrenage cônique. Figure 2, drawn along the same plane as Figure I, shows larger the end of the right arm of the rear fork (7). In this figure 2, a drawn rectangle materializes the base of a cover t3) fixed on the right branch of the rear fork (7). The role of this cover (3) is to cover and protect the bevel gear (I) with its support (4)? without being in contact with the bevel gear.

La figure 3, vue depuis l'avant de la bicyclette. montre 12 partie orientée vers l'avant du couvercle (3). qui chevauche sans le toucher l'arbre de transmission (5). Figure 3, viewed from the front of the bicycle. shows 12 forward-facing part of the cover (3). which overlaps without touching the drive shaft (5).

La figure 4. vue depuis l'arrière de la bicyclette, montre la partie du couvercle (3) orientée vers l'arrière, entièrement ouverte, qui laisse voir l'engrenage cônique (6) monté sur l'axe (2) de la roue arrière. I1 importe de bien décrire la circonférence de cette ouverture, sur laquelle viendra se positionner une hémisphère constituant la deuxième partie du couvercle (3), enfermant ainsi totalement les 2 engrenages de la transmission cônique. A proximité de l'axe (2), contre la paroi intérieure de l'extrémité de la branche droite de la fourche arrière (7), le bord du couvercle (3) se referme partiellement (9), car il peut déjà à ce niveau recouvrir une partie de l'engrenage cônique (I). Le bord du couvercle (3) et son prolongement (9) forment ainsi une circonférence qui vient s'encastrer parfaitement autour de la moitié de l'axe (2) sans toucher cet axe du côté de la roue arrière où le moyeu sera en rotation. Figure 4. seen from the rear of the bicycle, shows the part of the cover (3) oriented towards the rear, fully open, which reveals the bevel gear (6) mounted on the axis (2) of the rear wheel. It is important to properly describe the circumference of this opening, on which a hemisphere constituting the second part of the cover (3) will be positioned, thus completely enclosing the 2 gears of the conical transmission. Near the axis (2), against the inner wall of the end of the right branch of the rear fork (7), the edge of the cover (3) partially closes (9), because it can already level cover part of the bevel gear (I). The edge of the cover (3) and its extension (9) thus form a circumference which fits perfectly around half of the axle (2) without touching this axle on the side of the rear wheel where the hub will be rotating .

Les figures 5,6 et 7 sont dessinées de manière très simplifiée pour illustrer au mieux le système de fermeture du dispositif de protection. Figures 5,6 and 7 are drawn in a very simplified manner to best illustrate the closure system of the protection device.

la figure 5 en perspective, montre, presque au même plan, l'ouverture décrite à la figure 4, ainsi aue l'hémisphère (I2) correspondant à la deuxième partie du couvercle (3). Figure 5 in perspective, shows, almost in the same plane, the opening described in Figure 4, thus aue the hemisphere (I2) corresponding to the second part of the cover (3).

Les figures 6 et 7, en perspective selon le même plan que la figure 5, permettent de représenter le dispositif de protection dans sa totalité. En réalité, la partie supérieure et la partie inférieure sont aplaties, permettant d'installer un axe kI0) sur la circonférence à la partie supérieure, et une goupille (II) sur la circonférence à la partie inférieure. Figures 6 and 7, in perspective along the same plane as Figure 5, show the protection device in its entirety. In reality, the upper part and the lower part are flattened, making it possible to install an axis kI0) on the circumference at the upper part, and a pin (II) on the circumference at the lower part.

l'axe (I0) permet d'avoir une pcsition ouverte selon la figure 6. la goupille (II) permet d'avoir une position fermée selon la figure 7. the axis (I0) makes it possible to have an open position according to FIG. 6. the pin (II) makes it possible to have a closed position according to FIG. 7.

Si ce dispositif est brevetable, n'ayant pas d'antériorités, il n'a d'intérêt que si le brevet français numéro 91 I2I56 \droitier mécanique pour vélo sans clone) connaissait un réel succès, car ce dispositif de protection pour la transmission cônique au niveau de la roue arrière me parait être le plus pratique possible.  If this device is patentable, having no prior art, it is only of interest if the French patent number 91 I2I56 \ right-handed mechanical for bicycle without clone) knew a real success, because this protection device for the transmission taper at the rear wheel seems to me to be as practical as possible.

Claims (1)

REVENDICATIONS I) Dispositif pour recouvrir et protéger une transmission à engrenages côniques montée d'une part au côté intérieur de l'extrémité de la branche droite d'une fourche arrière de bicyclette (7), d'autre part sur l'axe de la roue arrière au côté droit (2), caractérisé en ce que cette protection forme un couvercle dont une première partie (3) est fixée au côté intérieur de l'extrémité de la branche droite de la fourche arrière (7), et dont une deuxième partie (I2) est maintenue mobile sur la première partie (3) grâce à l'axe (IO) et se referme gracie à la goupille (II) sur cette première partie en enserrant l'axe (2) de la roue arrière.  I) Device for covering and protecting a bevel gear transmission mounted on the one hand on the inner side of the end of the straight branch of a rear bicycle fork (7), on the other hand on the wheel axle rear on the right side (2), characterized in that this protection forms a cover, a first part (3) of which is fixed to the internal side of the end of the right branch of the rear fork (7), and a second part of which (I2) is kept mobile on the first part (3) thanks to the axis (IO) and closes thanks to the pin (II) on this first part by enclosing the axis (2) of the rear wheel.
FR9408433A 1994-07-04 1994-07-04 Protection cover for chainless bicycle rear wheel conical gearing Pending FR2721894A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9408433A FR2721894A1 (en) 1994-07-04 1994-07-04 Protection cover for chainless bicycle rear wheel conical gearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9408433A FR2721894A1 (en) 1994-07-04 1994-07-04 Protection cover for chainless bicycle rear wheel conical gearing

Publications (1)

Publication Number Publication Date
FR2721894A1 true FR2721894A1 (en) 1996-01-05

Family

ID=9465143

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9408433A Pending FR2721894A1 (en) 1994-07-04 1994-07-04 Protection cover for chainless bicycle rear wheel conical gearing

Country Status (1)

Country Link
FR (1) FR2721894A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT359844B (en) * 1978-10-16 1980-12-10 Leitner Horst CARDAN DRIVE FOR MOTORCYCLES
EP0487764A1 (en) * 1990-11-27 1992-06-03 Ta Chang Lay International Business Co., Ltd. A direct transmission system for a bicycle
FR2679863A1 (en) * 1991-09-30 1993-02-05 Godeau Yves Gear box/pedal crank mechanism for a bicycle, directly connected to the axle of the rear wheel via a transmission (prop.) shaft
US5316327A (en) * 1993-04-15 1994-05-31 Bell James H Chainless bicycle with dual drive shafts and floating drive train suspension system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT359844B (en) * 1978-10-16 1980-12-10 Leitner Horst CARDAN DRIVE FOR MOTORCYCLES
EP0487764A1 (en) * 1990-11-27 1992-06-03 Ta Chang Lay International Business Co., Ltd. A direct transmission system for a bicycle
FR2679863A1 (en) * 1991-09-30 1993-02-05 Godeau Yves Gear box/pedal crank mechanism for a bicycle, directly connected to the axle of the rear wheel via a transmission (prop.) shaft
US5316327A (en) * 1993-04-15 1994-05-31 Bell James H Chainless bicycle with dual drive shafts and floating drive train suspension system

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