CH185368A - Gear change mechanism, in particular applicable to a bicycle. - Google Patents

Gear change mechanism, in particular applicable to a bicycle.

Info

Publication number
CH185368A
CH185368A CH185368DA CH185368A CH 185368 A CH185368 A CH 185368A CH 185368D A CH185368D A CH 185368DA CH 185368 A CH185368 A CH 185368A
Authority
CH
Switzerland
Prior art keywords
lever
mechanism according
boss
spring
sub
Prior art date
Application number
Other languages
French (fr)
Inventor
Vigna Emilio
Original Assignee
Vigna Emilio
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 Vigna Emilio filed Critical Vigna Emilio
Publication of CH185368A publication Critical patent/CH185368A/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H3/00Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/083Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with radially acting and axially controlled clutching members, e.g. sliding keys
    • 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
    • B62M11/00Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
    • B62M11/04Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
    • B62M11/06Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with spur gear wheels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Structure Of Transmissions (AREA)
  • Transmission Devices (AREA)

Description

  

  <B>Brevet additionnel</B> subordonné au brevet principal n  172922.    Mécanisme de changement de vitesse, notamment applicable une bicyclette.    L'objet de l'invention est un mécanisme  de changement de vitesse selon la revendi  cation du brevet principal.  



  Le mécanisme de changement de vitesse  selon la présente invention est du type où  les roues de change portées par un arbre  de renvoi sont toujours en prise avec les  roues de l'arbre pédalier, lesquelles montées  folles, peuvent être reliées avec cet arbre  par des accouplements unidirectionnels action  nés par un curseur déplacé dans une fente  de l'arbre-pédalier par un levier     pivotable.     



  Ce mécanisme est caractérisé en ce que  le levier     d'actionnement    du curseur est  monté sur l'arbre de renvoi et peut tourner  dans une seule direction, un organe d'arrêt  l'empêchant de tourner en sens opposé.  



  Le dessin ci-joint montre, à titre d'exem  ple, une forme d'exécution de l'objet de l'in  vention.  



  La     fig.    1 représente la position de chan  gement de vitesse des organes mentionnés  et qui sont renfermés dans une boîte cylin  drique ajustée dans le bâti de la bicyclette, et    Les     fig.    2 et 3 deux positions inactives  de ceux-ci.  



  Le dispositif actionnant le curseur du  balancier qui déplace les     cliquets    d'accouple  ment est en principe le. même que celui  décrit dans le brevet principal.  



  Le levier     d'actionnement    21 du curseur  17 est monté directement sur l'arbre de renvoi  Il comporte une extrémité biseautée. Le  levier 21 peut tourner à l'encontre de l'action  d'un ressort 22 dans la direction indiquée  par les flèches des     fig.    2 et 3. Dans le sens  opposé, il est empêché de tourner par un  bossage 40 solidaire du couvercle 3 de la  boîte de vitesse. Le bossage 40 est traversé  par une vis 42 portant un ressort à boudin  41. Une des extrémités de ce ressort 41 est  fixée dans une rainure 43, tandis que l'autre  bout passe à travers une large fente 44 dans  le bossage pour s'engager dans une ouver  ture analogue 45 du levier 21. et agit sur  un nez 21' du levier 21.

   Par cela, celui-ci  est légèrement relevé comme représenté dans  la     fig.    2     qui    est la position inactive du  levier 21.      Le     fonctionnement    du     dispositif    est le  suivant:  Pendant la marche avant, le curseur 17  bute alternativement avec ses deux extré  mités bombées contre le levier 21     (fig.    3) et  le soulève     légèrement.    Le levier 21, qui est  alors mis en rotation, ne peut cependant  faire qu'une petite course, le ressort 22 le  ramenant toujours dans sa position initiale.  



  Quand on tourne, par rétropédalage, le  curseur 17 en sens inverse, celui-ci bute  contre le levier 21. Les extrémités bombées  du curseur et la surface faisant came formée  par le biseau du levier glissant l'une sur  l'autre provoquent le déplacement du cur  seur 17 et, par suite, le changement de  vitesse. Le ressort 41 logé dans le bossage  40 amortit le choc produit par le retour  brusque du levier 21 contre l'organe d'arrêt  40. Le pointillé de la     fig:    1 montre le mo  ment où le curseur heurte le levier 21 ;     celui-          ci    est pressé contre le bossage 40. La partie  biseautée du levier amène le curseur vers  le bas (comme indiqué en traits pleins) dans  une position correspondant à une autre  vitesse.



  <B> Additional patent </B> subordinate to main patent No. 172922. Gear change mechanism, in particular applicable to a bicycle. The object of the invention is a gear change mechanism according to the claim of the main patent.



  The gear change mechanism according to the present invention is of the type where the change wheels carried by a countershaft are always engaged with the wheels of the crankshaft, which mounted idle, can be connected with this shaft by couplings. unidirectional action born by a slider moved in a slot of the crankshaft by a swivel lever.



  This mechanism is characterized in that the slider actuating lever is mounted on the countershaft and can rotate in only one direction, a stopper preventing it from rotating in the opposite direction.



  The accompanying drawing shows, by way of example, one embodiment of the object of the invention.



  Fig. 1 shows the speed change position of the mentioned components which are enclosed in a cylindrical box fitted in the frame of the bicycle, and FIGS. 2 and 3 two inactive positions of these.



  The device actuating the slider of the balance which moves the coupling pawls is in principle the. same as that described in the main patent.



  The actuating lever 21 of the slider 17 is mounted directly on the countershaft It has a bevelled end. The lever 21 can rotate against the action of a spring 22 in the direction indicated by the arrows in FIGS. 2 and 3. In the opposite direction, it is prevented from rotating by a boss 40 integral with the cover 3 of the gearbox. The boss 40 is crossed by a screw 42 carrying a coil spring 41. One end of this spring 41 is fixed in a groove 43, while the other end passes through a wide slot 44 in the boss to engage. in a similar opening 45 of the lever 21. and acts on a nose 21 'of the lever 21.

   By this, it is slightly raised as shown in fig. 2 which is the inactive position of lever 21. The operation of the device is as follows: During forward travel, the slider 17 alternately bumps with its two convex ends against the lever 21 (FIG. 3) and lifts it slightly. The lever 21, which is then rotated, can however make only a small stroke, the spring 22 always returning it to its initial position.



  When the slider 17 is rotated in the opposite direction by backpedaling, the latter abuts against the lever 21. The curved ends of the slider and the camming surface formed by the bevel of the lever sliding one on the other cause the displacement. of the cur sor 17 and, consequently, the change of speed. The spring 41 housed in the boss 40 absorbs the shock produced by the sudden return of the lever 21 against the stop member 40. The dotted line in FIG: 1 shows the moment when the cursor hits the lever 21; the latter is pressed against the boss 40. The bevelled part of the lever brings the cursor down (as indicated by solid lines) to a position corresponding to another speed.

 

Claims (1)

REVENDICATION Mécanisme de changement de vitesse, notamment applicable à une bicyclette, selon la revendication du brevet principal et du type où les roues de change portées par un arbre de renvoi sont toujours en prise avec les roues de l'arbre pédalier lesquelles mon- tées folles, peuvent être reliées avec cet arbre par des accouplements unidirectionnels actionnés par un curseur déplacé dans une fente de l'arbre pédalier par un levier pivo- table, caractérisé en ce que le levier d'ac- tionnement du curseur est monté sur l'arbre de renvoi et peut être déplacé librement dans une direction, CLAIM Gear change mechanism, in particular applicable to a bicycle, according to the claim of the main patent and of the type in which the change wheels carried by a countershaft are always engaged with the wheels of the crankshaft which are mounted idle. , can be connected with this shaft by unidirectional couplings actuated by a slider moved in a slot of the crankshaft by a pivoting lever, characterized in that the slider operating lever is mounted on the shaft deflection and can be moved freely in one direction, un organe d'arrêt empê chant son déplacement dans le sens opposé, le tout disposé de façon telle que le levier actionne le curseur quand celui-ci tourne dans un sens et n'exerce pas d'action sur lui quand il tourne dans l'autre sens. SOUS-REVENDICATIONS 1 Mécanisme selon la revendication, carac térisé en ce que le levier tourne à l'en contre de l'action d'un ressort et comporte une extrémité biseautée. 2 Mécanisme selon la revendication, carac térisé en ce que l'organe d'arrêt est formé par un bossage du couvercle de la boîte de vitesse. a stop member preventing its displacement in the opposite direction, the whole arranged in such a way that the lever actuates the cursor when the latter turns in one direction and does not exert any action on it when it turns in the other way. SUB-CLAIMS 1 Mechanism according to claim, charac terized in that the lever turns against the action of a spring and has a bevelled end. 2 Mechanism according to claim, charac terized in that the stop member is formed by a boss of the gearbox cover. Mécanisme selon la sous-revendication 2 caractérisé en ce qu'un ressort est assu jetti au bossage pour maintenir le levier en partie relevé et pour amortir les chocs produits lors du pédalage à rebours. Mécanisme selon la sous-revendication 3, caractérisé en ce que le bossage et le levier sont pourvus d'une fente dans la quelle peut jouer ledit ressort. Mechanism according to sub-claim 2, characterized in that a spring is attached to the boss in order to keep the lever partially raised and to absorb the shocks produced during back pedaling. Mechanism according to sub-claim 3, characterized in that the boss and the lever are provided with a slot in which the said spring can act.
CH185368D 1932-07-30 1934-11-08 Gear change mechanism, in particular applicable to a bicycle. CH185368A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT611721X 1932-07-30
CH183921T 1935-03-30
CH186759T 1935-05-03

Publications (1)

Publication Number Publication Date
CH185368A true CH185368A (en) 1936-07-15

Family

ID=34119358

Family Applications (3)

Application Number Title Priority Date Filing Date
CH184546D CH184546A (en) 1932-07-30 1934-07-17 Gear change mechanism, in particular applicable to a bicycle.
CH185368D CH185368A (en) 1932-07-30 1934-11-08 Gear change mechanism, in particular applicable to a bicycle.
CH183921D CH183921A (en) 1932-07-30 1935-03-30 Gear change mechanism, in particular applicable to a bicycle.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CH184546D CH184546A (en) 1932-07-30 1934-07-17 Gear change mechanism, in particular applicable to a bicycle.

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH183921D CH183921A (en) 1932-07-30 1935-03-30 Gear change mechanism, in particular applicable to a bicycle.

Country Status (3)

Country Link
AT (1) AT141928B (en)
CH (3) CH184546A (en)
DE (2) DE611721C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4305312A (en) * 1977-06-27 1981-12-15 Lapeyre Fernand S Bicycle transmission
US4283969A (en) * 1977-06-27 1981-08-18 Lapeyre Fernand S Bicycle transmission
US4718304A (en) * 1984-12-11 1988-01-12 Ivy Jessie T Vehicle differential which distributes torque between vehicle wheels in accordance with operating demands
DE4134843A1 (en) * 1991-10-22 1992-11-26 Bernhard Albrecht TRANSMISSION ARRANGEMENT FOR SENIOR BICYCLES
DE19712444A1 (en) * 1997-03-25 1998-10-01 Gerhard Mueller Gearchange system for bicycle
DE102007004802B4 (en) 2007-01-22 2015-02-05 Pinion Gmbh Multiple transmission for a powered by muscle power vehicle

Also Published As

Publication number Publication date
CH183921A (en) 1936-04-30
CH184546A (en) 1936-05-31
DE611721C (en) 1935-04-03
AT141928B (en) 1935-06-11
DE643850C (en) 1937-04-19

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