CH184546A - Gear change mechanism, in particular applicable to a bicycle. - Google Patents
Gear change mechanism, in particular applicable to a bicycle.Info
- Publication number
- CH184546A CH184546A CH184546DA CH184546A CH 184546 A CH184546 A CH 184546A CH 184546D A CH184546D A CH 184546DA CH 184546 A CH184546 A CH 184546A
- Authority
- CH
- Switzerland
- Prior art keywords
- lever
- gear change
- slider
- shaft
- bicycle
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed 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
- F16H3/083—Toothed 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
-
- 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
- B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
- B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
- B62M11/06—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with spur gear wheels
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Transmission Devices (AREA)
- Structure Of Transmissions (AREA)
Description
Mécanisme de changement de vitesse, notamment applicable une bicyclette. L'objet de la présente invention est un mécanisme de changement de vitesse, notam ment applicable à une bicyclette selon la revendication du brevet principal.
Suivant cette revendication, le change ment de vitesse comporte des organes à l'aide desquels le cycliste opère le change ment de vitesse en invertissant le sens de rotation de l'arbre conducteur.
Dans le brevet principal, on a décrit une forme d'exécution comprenant un balancier pivoté à l'intérieur de l'arbre entraîneur, balancier qui commande des cliquets d'ac couplement montés dans des alvéoles dudit arbre et agissant seulement dans un sens sur les roues dentées du changement de vi tesse et qui, commandé lui-même par un cur seur dans une fente de l'arbre entraîneur, est déplacé par action de contre-pédale au moyen de l'extrémité en biseau d'un bras de levier pivoté sur le couvercle de la boîte ren fermant le mécanisme. Ce bras, qui est com mandé par un ressort et coopère avec une butée, est déplacé à chaque tour de l'arbre entraîneur et provoque un bruit qu'on veut supprimer au moyen de l'objet de la présente invention.
La présente invention comporte donc un levier pivoté sur le couvercle de la boîte du mécanisme et sollicité par un ressort en spi rale, ce levier coopérant avec le curseur sous l'effet d'un ressort de butée plat et recourbé, monté sur l'arbre de renvoi et une butée auxi liaire supportant ledit ressort de butée de façon à empêcher le contact du levier avec l'arbre de renvoi dans une position où le le vier déplace le curseur.
L'objet de l'invention est représenté au dessin annexé, et à titre d'exemple, par une vue prise en direction axiale de l'arbre en traîneur de la bicyclette.
Dans une fente de l'arbre entraîneur 1, dont le sens de mouvement pendant la marche ordinaire est indiqué par une flèche, peut glisser un curseur 2 qui doit coopérer avec un levier 3 pivoté sur un piton 4. Ce levier est sollicité par un ressort 5 en spirale qui est ancré par son extrémité libre sur l'arbre de renvoi 6 du changement de vitesse et qui cherche à amener le levier 3 vers cet arbre de renvoi. Un second ressort 7 de butée plat et recourbé est fixé à l'une de ses extrémités par une vis 8 et s'appuie avec son autre extré mité contre le levier 3 en le maintenant tou jours à distance de l'arbre de renvoi 6. Ce ressort s'appuie lui-même sur une butée auxi liaire 9 qui supporte sa partie médiane.
Le fonctionnement de cet arrangement est le suivant: En marche ordinaire, le levier 3 prend la position indiquée en lignes pointillées et barre le chemin du curseur 2 assez légèrement pour ne pas déplacer ce curseur. Mais en cas d'un contre-pédalage, le curseur rencontrant l'ex trémité libre en biseau du levier fait tourner ce levier et est alors enfoncé par force dans l'arbre entraîneur sans que le levier touche l'arbre de renvoi. Tout bruit de contact entre cet arbre et le levier 3 est ainsi supprimé.
Gear change mechanism, especially applicable to a bicycle. The object of the present invention is a gear change mechanism, in particular applicable to a bicycle according to the claim of the main patent.
According to this claim, the speed change comprises members with the aid of which the cyclist operates the speed change by inverting the direction of rotation of the driving shaft.
In the main patent, an embodiment has been described comprising a rocker pivoted inside the drive shaft, a rocker which controls coupling pawls mounted in cells of said shaft and acting only in one direction on the gear wheels and which, itself controlled by a slider in a slot in the drive shaft, is moved by counter-pedal action by means of the bevelled end of a pivoted lever arm on the box cover closing the mechanism. This arm, which is controlled by a spring and cooperates with a stopper, is moved on each turn of the drive shaft and causes a noise which one wants to suppress by means of the object of the present invention.
The present invention therefore comprises a lever pivoted on the cover of the mechanism box and biased by a spiral spring, this lever cooperating with the slider under the effect of a flat and curved stop spring, mounted on the shaft. return stopper and an auxiliary stopper supporting said stopper spring so as to prevent contact of the lever with the return shaft in a position where the lever moves the slider.
The object of the invention is shown in the accompanying drawing, and by way of example, by a view taken in the axial direction of the trailing shaft of the bicycle.
In a slot of the drive shaft 1, the direction of movement of which during ordinary running is indicated by an arrow, can slide a slider 2 which must cooperate with a lever 3 pivoted on a pin 4. This lever is biased by a spring. 5 spiral which is anchored by its free end on the countershaft 6 of the gear change and which seeks to bring the lever 3 towards this countershaft. A second flat and curved stop spring 7 is fixed at one of its ends by a screw 8 and rests with its other end against the lever 3, keeping it always at a distance from the countershaft 6. This spring itself rests on an auxiliary stop 9 which supports its middle part.
The operation of this arrangement is as follows: In ordinary operation, lever 3 assumes the position indicated in dotted lines and bars the path of cursor 2 slightly enough not to move this cursor. But in the event of a counter-pedaling, the slider meeting the bevelled free end of the lever causes this lever to turn and is then forcibly pressed into the drive shaft without the lever touching the countershaft. Any noise of contact between this shaft and the lever 3 is thus suppressed.
Claims (1)
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 |
---|---|
CH184546A true CH184546A (en) | 1936-05-31 |
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 After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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. |
Country Status (3)
Country | Link |
---|---|
AT (1) | AT141928B (en) |
CH (3) | CH184546A (en) |
DE (2) | DE611721C (en) |
Families Citing this family (7)
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 |
FI130789B1 (en) * | 2023-03-10 | 2024-03-19 | Sec Holding Oy | Speed regulator |
-
1933
- 1933-07-28 AT AT141928D patent/AT141928B/en active
- 1933-07-30 DE DEV29789D patent/DE611721C/en not_active Expired
-
1934
- 1934-07-17 CH CH184546D patent/CH184546A/en unknown
- 1934-11-08 CH CH185368D patent/CH185368A/en unknown
-
1935
- 1935-03-30 CH CH183921D patent/CH183921A/en unknown
- 1935-05-14 DE DEV31830D patent/DE643850C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE611721C (en) | 1935-04-03 |
CH185368A (en) | 1936-07-15 |
AT141928B (en) | 1935-06-11 |
CH183921A (en) | 1936-04-30 |
DE643850C (en) | 1937-04-19 |
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