CH261796A - Crankset for bicycles, tandems or the like. - Google Patents
Crankset for bicycles, tandems or the like.Info
- Publication number
- CH261796A CH261796A CH261796DA CH261796A CH 261796 A CH261796 A CH 261796A CH 261796D A CH261796D A CH 261796DA CH 261796 A CH261796 A CH 261796A
- Authority
- CH
- Switzerland
- Prior art keywords
- bosses
- toothed
- wheel
- crankset
- tandems
- Prior art date
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
-
- 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
- B62M9/105—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 involving front sprocket chain-wheels engaged by the chain, belt or the like
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
Description
Pédalier pour bicyclettes, tandems ou similaires. Pour obtenir un accouplement rigide et. léger d'une roue dentée et d'une couronne dentée constituant un pédalier pour bievelet- tes, tandems ou similaires, et avant un faible écart diamétral, la roue présentant par exem ple 50 dents et la couronne 45, il importait de réaliser ces deux organes en établissant la roue dentée porteuse et la couronne dentée portée sous des formes nouvelles qui font l'objet de la présente invention.
Une forme d'exécution de l'objet de l'in vention est représentée, à titre d'exemple, dans le dessin annexé La fig. 1 montre par demi-partie à droite la roue dentée porteuse et par demi-partie à gauche la couronne dentée portée. Le tracé en traits mixtes montre tune clés trois bran ches radiales de l'axe de pédalier, sur les quelles se fixe la roue porteuse.
La fig. 2 est une vue en coupe suivant l'axe 1-2) de la fig. <B>1.</B>
La fig. 3 est une vue en coupe suivant l'axe 3-4 de la fin. 1.
La roue dentée porteuse a est pourvue intérieurement de trois groupes de chacun trois bossages reliés entre eux par des éléments formant corde et flèche de l'arc compris entre les bossages extrêmes. Les trous a= percés dans ces bossages à proximité de la denture servent au passage des boulons de fixation de la couronne dentée portée b. <I>En.</I> a2, au milieu de l'élément formant corde, est prévu un trou de fixation d'une des trois branches c de l'axe de pédalier.
La. couronne dentée portée b comporte des bossages percés de trous b1 dans lesquels s'en gagent les boulons de fixation traversant les trous al clé la roue porteuse.
Avec les dispositions et les profils indi qués on a un accouplement de la roue dentée porteuse et clé la couronne dentée portée, très proche des diamètres primitifs d'engrènement desdites roues et couronnes dentées, ce qui rend cette roue et cette couronne très rigides circulairement tout en évitant. tout. excédent de poids.
11 reste entendu que ces dispositions s'ap pliquent à des roues dentées et couronnes dentées de toutes dimensions, lesdites roues dentées porteuses et leurs couronnes dentées étant utilisées principalement dans les dispo sitifs de changement. de vitesse au pédalier.
Crankset for bicycles, tandems or the like. To obtain a rigid coupling and. light of a toothed wheel and a toothed crown constituting a crankset for bievelettes, tandems or the like, and before a small diametral gap, the wheel having for example 50 teeth and the crown 45, it was important to achieve these two organs by establishing the bearing toothed wheel and the toothed ring gear carried in new forms which are the subject of the present invention.
An embodiment of the object of the invention is shown, by way of example, in the accompanying drawing; FIG. 1 shows by half-part on the right the load bearing toothed wheel and by half-part on the left the worn toothed ring. The phantom line shows a key three radial branches of the crank axle, on which the load wheel is fixed.
Fig. 2 is a sectional view along the axis 1-2) of FIG. <B> 1. </B>
Fig. 3 is a sectional view along the axis 3-4 of the end. 1.
The carrier toothed wheel a is provided internally with three groups of each of three bosses connected to one another by elements forming the string and arrow of the arc included between the end bosses. The holes a = drilled in these bosses near the teeth are used for the passage of the mounting bolts of the ring gear b. <I> En. </I> a2, in the middle of the string-forming element, there is a fixing hole for one of the three branches c of the crank axle.
The worn toothed ring b has bosses drilled with holes b1 in which are engaged the fixing bolts passing through the holes in the carrier wheel.
With the arrangements and the profiles indicated, there is a coupling of the bearing toothed wheel and the worn toothed ring wrench, very close to the pitch diameters of meshing of said wheels and toothed rings, which makes this wheel and this ring very rigid all round. by avoiding. all. excess weight.
It remains understood that these arrangements apply to toothed wheels and toothed rings of all sizes, said supporting toothed wheels and their toothed rings being used mainly in changing devices. speed at the crank.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR261796X | 1946-04-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH261796A true CH261796A (en) | 1949-05-31 |
Family
ID=8885106
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH261796D CH261796A (en) | 1946-04-13 | 1947-04-08 | Crankset for bicycles, tandems or the like. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH261796A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4009621A (en) * | 1976-03-03 | 1977-03-01 | Shimano Industrial Company, Limited | Assembly of chain sprockets and cranks for bicycle |
-
1947
- 1947-04-08 CH CH261796D patent/CH261796A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4009621A (en) * | 1976-03-03 | 1977-03-01 | Shimano Industrial Company, Limited | Assembly of chain sprockets and cranks for bicycle |
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