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
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)
- 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)
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)
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 |
-
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 |
---|---|
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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