CH332033A - Sprocket change gear on a bicycle - Google Patents
Sprocket change gear on a bicycleInfo
- Publication number
- CH332033A CH332033A CH332033DA CH332033A CH 332033 A CH332033 A CH 332033A CH 332033D A CH332033D A CH 332033DA CH 332033 A CH332033 A CH 332033A
- Authority
- CH
- Switzerland
- Prior art keywords
- carrier
- bicycle
- hand
- slot
- change gear
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K25/00—Axle suspensions
- B62K25/02—Axle suspensions for mounting axles rigidly on cycle frame or fork, e.g. adjustably
-
- 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
- B62M9/12—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 the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
- B62M9/121—Rear derailleurs
- B62M9/124—Mechanisms for shifting laterally
-
- 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
- B62M9/12—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 the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
- B62M9/121—Rear derailleurs
- B62M9/124—Mechanisms for shifting laterally
- B62M2009/12413—Rear derailleur comprising telescoping mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
Description
Kettenräderwechselgetriebe an einem Fahrrad Bei manchen Kettenräderwechselgetrieben für Fahrräder, insbesondere bei solchen mit zwei Spannrollen, ist es notwendig, die Stel lung des Trägers der Kettensehalteinrichtung zu verändern, um beim Ausbau des Hinter rades dieses ohne Schwierigkeit aus dem Rah men nehmen zu können. Bei einigen Wech selgetrieben muss der Träger beim Aus- und Einbau des Hinterrades vollkommen vom Rah men gelöst werden. Bei andern Systemen ist der Träger um einen Zapfen schwenkbar aus geführt, so dass durch Ausschwenken des Trä gers Platz für den Aus- und Einbau des Hin terrades geschaffen wird, ohne dass der Träger vom Rahmen entfernt wird.
Der Träger des Wechselgetriebes gemäss vorliegender Erfindung stellt eine besonders einfache Lösung eines schwenkbaren Trägers dar. Der Träger schwenkt ohne festen Dreh punkt nur durch Flächenführung. Die Schwenkbewegung wird zweckmässig ermög licht einerseits durch einen kurvenförmigen Schlitz am Träger, der in einem am Rahmen ende befestigten Bolzen geführt ist, ander seits durch Flächen, die in den Gabelschlitz greifen. Dadurch, dass eine genaue Führung des Trägers um einen Mittelpunkt beim Schwenken vermieden wird, ist es nicht nötig, die Trägerteile mit einer Passung auszuführen. Es ist deshalb möglich, den Träger als S tanzteil anzufertigen und nicht zu bearbeiten.
Ausserdem ermöglicht der Erfindungsgegen- stand einen grösseren Schwenkbereich als die bekannten Konstruktionen.
In der Zeichnung ist ein Ausführungsbei spiel des Erfindungsgegenstandes dargestellt. Fig. 1 zeigt eine Ansicht der Gangschalt- einrichtung in Betriebsstellung; Fig.2 zeigt einen Teilschnitt der Gang schalteinrichtung; Fig. 2a zeigt einen Teilschnitt gemäss Schnittlinie A -B; Fig. 3 zeigt den Träger der Gangschaltein- richtung in ausgeschwenktem Zustand bei Herausnahme des Hinterrades.
Der Träger 1 ist mit einem kurvenförmigen Schlitz 2 versehen, durch den ein fester Bol zen 3 ragt. In Betriebsstellung wird der Schlitz 4 des Trägers mit dem Gabelschlitz 5 des Rahmens zur Deckung gebracht (siehe Fig.1). Das über die Trägerfläche vorstehende Stück 6 am Trägerschlitz 4 greift in den Ga belschlitz 5 ein und bildet oben und unten eine Anlagefläche 7, B. Wird nunmehr der Träger 1 bei Herausnahme des Hinterrades ausgeschwenkt (gemäss Fig. 3), so erfolgt die Schwenkbewegung des Trägers 1, indem einer seits die Fläche 8 am Rand des Gabelschlitzes gleitet, anderseits der Schlitz 2 sich am Bolzen 3 verschiebt.
Da die Schwenkbewegung ledig lich durch das Zusammenwirken des Schlitzes 2 mit-dem Bolzen 3 einerseits und der Fläche 8 mit dem Rand des Gabelschlitzes anderseits erfolgt, ist eine genaue Passung, wie sie bei einer Achse nötig wäre, nicht erforderlich. Es kann deshalb der Träger 1 als Stanzteil hergestellt werden ohne irgendwelche Nach bearbeitung. Dies bedeutet eine erhebliche Vereinfachung und Verbilligung dieses Teils.
Sprocket change gears on a bicycle In some sprocket change gears for bicycles, especially those with two idlers, it is necessary to change the stel ment of the carrier of the chain holder in order to remove this from the frame without difficulty when removing the rear wheel. With some change gears, the carrier must be completely detached from the frame when removing and installing the rear wheel. In other systems, the carrier is pivotable about a pin, so that by pivoting the carrier, space is created for removing and installing the rear wheel without the carrier being removed from the frame.
The carrier of the change gear according to the present invention represents a particularly simple solution of a pivotable carrier. The carrier pivots without a fixed point of rotation only by surface guidance. The pivoting movement is expediently made possible light on the one hand by a curved slot on the carrier, which is guided in a bolt attached to the frame end, on the other hand by surfaces that engage in the fork slot. Because an exact guidance of the carrier around a center point is avoided when pivoting, it is not necessary to design the carrier parts with a fit. It is therefore possible to manufacture the carrier as a stamped part and not to process it.
In addition, the subject of the invention enables a larger pivoting range than the known constructions.
In the drawing, a Ausführungsbei is shown game of the subject invention. 1 shows a view of the gear shifting device in the operating position; Fig.2 shows a partial section of the gear shifting device; 2a shows a partial section along section line A -B; 3 shows the carrier of the gearshift device in the swiveled-out state when the rear wheel is removed.
The carrier 1 is provided with a curved slot 2 through which a solid Bol zen 3 protrudes. In the operating position, the slot 4 of the carrier is brought into line with the fork slot 5 of the frame (see FIG. 1). The protruding over the support surface piece 6 on the support slot 4 engages in the Ga belschlitz 5 and forms a contact surface 7, B at the top and bottom. If the carrier 1 is now pivoted out when the rear wheel is removed (according to FIG. 3), the pivoting movement of the takes place Carrier 1 by on the one hand the surface 8 slides on the edge of the fork slot, on the other hand the slot 2 moves on the bolt 3.
Since the pivoting movement is single Lich through the interaction of the slot 2 with the bolt 3 on the one hand and the surface 8 with the edge of the fork slot on the other hand, an exact fit, as would be necessary with an axis, is not required. The carrier 1 can therefore be produced as a stamped part without any post-processing. This means a considerable simplification and cheaper this part.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE332033X | 1954-09-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH332033A true CH332033A (en) | 1958-08-15 |
Family
ID=6200723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH332033D CH332033A (en) | 1954-09-01 | 1955-07-07 | Sprocket change gear on a bicycle |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH332033A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4174851A (en) * | 1976-11-17 | 1979-11-20 | Huret Roger Henri | Bicycle frame support member |
FR2502098A1 (en) * | 1981-03-23 | 1982-09-24 | Huret & Fils | IMPROVED DEVICE FOR FASTENING A DERAILLEUR ON A FRAME PAD |
-
1955
- 1955-07-07 CH CH332033D patent/CH332033A/en unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4174851A (en) * | 1976-11-17 | 1979-11-20 | Huret Roger Henri | Bicycle frame support member |
FR2502098A1 (en) * | 1981-03-23 | 1982-09-24 | Huret & Fils | IMPROVED DEVICE FOR FASTENING A DERAILLEUR ON A FRAME PAD |
EP0061943A1 (en) * | 1981-03-23 | 1982-10-06 | HURET ET SES FILS Société dite: | Device for affixing a derailleur to the bottom part of a bicycle frame |
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