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
Application number
Other languages
French (fr)
Inventor
Juy Lucien
Original Assignee
Juy Lucien
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 Juy Lucien filed Critical Juy Lucien
Publication of CH261796A publication Critical patent/CH261796A/en

Links

Classifications

    • 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
    • B62M9/00Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/10Transmissions 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
    • 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
    • B62M9/00Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/10Transmissions 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
    • B62M9/105Transmissions 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)

REVENDICATION Pédalier pour bicyclettes, tandems ou si milaires, comprenant une roue dentée por teuse et une couronne dentée avec dentures d'un faible écart diamétral, la couronne den tée étant. fiée sur la roue dentée porteuse, ladite roue dentée porteuse étant pourvue intérieurement de trois groupes de chacun trois bossages reliés entre eux par des élé ments formant corde et flèche de l'arc coin- pris entre les deux bossages extrêmes, les trois bossages étant percés de trous à proxi mité de la denture pour le passage de fou lons de fixation qui s'engagent dans des trous correspondants ménagés dans des bos sages de la couronne portée, les éléments de la roue porteuse formant cordes entre les deux bossages. CLAIM Crankset for bicycles, tandems or so milaires, comprising a supporting toothed wheel and a toothed ring gear with toothings of a small diameter gap, the toothed ring being. attached to the carrier toothed wheel, said carrier toothed wheel being provided internally with three groups of each three bosses interconnected by elements forming the chord and arrow of the arc wedged between the two end bosses, the three bosses being drilled holes close to the teeth for the passage of fastening lons which engage in corresponding holes made in wise bos of the worn crown, the elements of the load wheel forming cords between the two bosses. extrêmes des trois groupes de bossages sont pourvus en leur milieu d'un trou pour la fixation des extrémités de trois bran ches radiales de l'axe de pédalier. ends of the three groups of bosses are provided in their middle with a hole for fixing the ends of three radial branches of the crank axle.
CH261796D 1946-04-13 1947-04-08 Crankset for bicycles, tandems or the like. CH261796A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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