DE828063C - Chain switching and catching device for change gears of bicycles - Google Patents
Chain switching and catching device for change gears of bicyclesInfo
- Publication number
- DE828063C DE828063C DEL6468A DEL0006468A DE828063C DE 828063 C DE828063 C DE 828063C DE L6468 A DEL6468 A DE L6468A DE L0006468 A DEL0006468 A DE L0006468A DE 828063 C DE828063 C DE 828063C
- Authority
- DE
- Germany
- Prior art keywords
- chain
- arm
- bicycles
- switching
- change gears
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- 238000006073 displacement reaction Methods 0.000 claims 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 201000009032 substance abuse Diseases 0.000 description 1
Classifications
-
- 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
- B62M9/1244—Mechanisms for shifting laterally limiting or positioning the movement
-
- 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
- B62M9/16—Tensioning or adjusting equipment for chains, belts or the like
Description
Die bekannten Kettenschalt- und Kettenauffangeinrichtungen für Wechselgetriebe mit Kettenwechsel zwischen mehreren verschieden großen Zahnkränzen an der Hinterradnabe von Fahrrädern ragen mit ihren Teilen weit seitlich über die l@'l)ene des Fahrradrahmens hinaus. Diese Bauart ist unvollkommen, sehr nachteilig und nicht betriebssicher. Wenn nämlich bei einem Sturz des Fahrers oder beim Umfallen des Rades dieses auf die rechte Seite fällt, auf der die Einrichtung angebracht ist, schlägt die Einrichtung auf den Boden auf, Nvird beschädigt und meist unbrauchbar.The well-known chain shifting and chain catching devices for change gears with chain change between several different sized sprockets on the rear hub of bicycles protrude with their parts far laterally over the l @ 'l) ene of the bicycle frame out. This type of construction is imperfect, very disadvantageous and not reliable. If, namely, if the driver falls or if the bike falls over, this opens the right side on which the device is attached falls, the device hits on the floor, NV gets damaged and mostly unusable.
Weiterhin wird bei Benutzung von Kettenschalt-und Auffangeinrichtungen für Fahrräder mit Freilaufbremsnaben das obere Kettentrum beim Bremsen sehr locker und hängt stark durch; es fällt auf die Rahmengabel, beschmutzt und zerkratzt dieselbe, kann in die Speichen gelangen, das Rad beschädigen und auch den Fahrer zu Fall bringen. Man bringt deshalb Kettenleitbleche unter dem oberen Kettentrum an, die aber das Abgleiten der Kette nur teilweise verhindern.Furthermore, when using chain switching and fall arrest devices for bicycles with freewheel brake hubs the upper chain strand is very loose when braking and sags a lot; it falls on the frame fork, soiling and scratching it, can get into the spokes, damage the wheel and also cause the driver to fall. Therefore chain guide plates are attached under the upper chain strand, but they do Only partially prevent the chain from slipping.
Die Erfindung beseitigt diese Mißstände. Bei ihr ist die Kettenschalt- und Auffangeinrichtung für Fahrräder mit Freilaufbremsnaben räumlich so gestaltet und angeordnet, daß sie beim Umfallen des Rades nicht auf den Boden aufschlagen kann und somit vor Beschädigungen geschützt ist. Gleichzeitig ist Vorsorge getroffen, daß das beim Bremsen lose durchhängende obere Kettentrum automatisch aufgefangen wird und so die oben geschilderten Mißstände und Gefahrenmomente ausgeschaltet werden.The invention overcomes these shortcomings. With her is the derailleur and collection device for bicycles with freewheel brake hubs spatially designed in such a way and arranged that they do not hit the ground when the wheel falls over can and is thus protected from damage. At the same time, precautions are taken that the upper chain strand, which sags loosely when braking, is automatically caught and so the abuses and dangers described above are eliminated.
In der Zeichnung ist die Erfindung in einem Ausführungsbeispiel dargestellt.In the drawing, the invention is shown in one embodiment.
Fig. i zeigt schematisch in Draufsicht die Kettenschalteinrichtung, Fig.2 in Seitenansicht die Anordnung der Schalteinrichtung in Verbindung mit der Kettenauffangeinrichtung.Fig. I shows a schematic plan view of the chain shifting device, Fig.2 in side view the arrangement of the switching device in connection with the Chain catcher.
Der Schaltarm i ist drehbar an der am Fahrradrahmen befestigten Lasche 2 gelagert und trägt an seinem freien Ende den Achsbolzen 3, auf dem das Schaltrad 4 verschiebbar angeordnet ist; dieses schaltet die Kette 5 auf dem Zahnkranzsatz 6. Bei greift die Druckfeder 8, die am Schaltarm i befestigt ist, am Schaltrad 4 an und verschiebt dieses entgegen der Pfeilrichtung 9 auf dem Achsbolzen 3. Durch den Kettenzug io, der an der Feder 8 befestigt ist und in der Pfeilrichtung 9 zieht, wird die Schaltung in bekannter Weise betätigt.The switch arm i is rotatable on the bracket attached to the bicycle frame 2 stored and carries at its free end the axle pin 3 on which the ratchet wheel 4 is slidably arranged; this switches the chain 5 on the sprocket set 6. When the compression spring 8, which is attached to the shift arm i, engages the ratchet wheel 4 and moves it against the direction of arrow 9 on the axle pin 3. Through the chain hoist io, which is attached to the spring 8 and pulls in the direction of the arrow 9, the circuit is operated in a known manner.
Beim Bremsen schwingt der Schaltarm i in die gestrichelt angedeutete Lage aus. Diese Bewegung wird auf das Gestänge i3, i4 und auf die Kettenauffangeinrichtung so übertragen, daß die Kette 5 in der günstigsten Stellung von der Leitrolle i i aufgefangen wird. Das Gestänge besteht aus der bei 12 am Schaltarm i beweglich angeordneten Stange 13, die mit dem @-N'inkelhebel 14 gelenkig verbunden ist. Der Winkelhebel 14 ist in der an der Rahmengabel 15 befestigten Lasche 16 drehbar gelagert und trägt die Kettenleitrolle i i.When braking, the switching arm i swings out into the position indicated by dashed lines. This movement is transmitted to the linkage i3, i4 and to the chain catching device in such a way that the chain 5 is caught in the most favorable position by the guide roller ii. The linkage consists of the rod 13, which is movably arranged at 12 on the switching arm i and which is articulated to the @ -N'winkelhebel 14. The angle lever 14 is rotatably mounted in the bracket 16 attached to the frame fork 15 and carries the chain idler roller i i.
Durch die erfindungsgemäße Anordnung wird bewirkt, daß die Kette beim Bremsen entsprechend der Ausschwingung des Schaltarms i angehoben und in der erforderlichen Stellung gehalten wird. Ein seitliches Abgleiten der Kette .kann z. B. durch eine an sich bekannte Gabelführung verhindert werden.The inventive arrangement has the effect that the chain when Brakes according to the swing of the switching arm i raised and in the required Position is held. The chain can slide sideways. B. by a known fork guide can be prevented.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL6468A DE828063C (en) | 1950-12-03 | 1950-12-03 | Chain switching and catching device for change gears of bicycles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL6468A DE828063C (en) | 1950-12-03 | 1950-12-03 | Chain switching and catching device for change gears of bicycles |
Publications (1)
Publication Number | Publication Date |
---|---|
DE828063C true DE828063C (en) | 1952-01-14 |
Family
ID=7257168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL6468A Expired DE828063C (en) | 1950-12-03 | 1950-12-03 | Chain switching and catching device for change gears of bicycles |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE828063C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4137308A1 (en) * | 1991-11-13 | 1993-05-19 | Dietrich Gerhard Ellsaesser | Stabilised suspension for bicycle to counteract pedalling effects - has chain drive looped over sprocket on non-sprung part of damper to relieve damper loading during pedal stroke |
EP2108580A1 (en) | 2008-04-11 | 2009-10-14 | Shimano, Inc. | Tension device of bicycle derailleur |
-
1950
- 1950-12-03 DE DEL6468A patent/DE828063C/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4137308A1 (en) * | 1991-11-13 | 1993-05-19 | Dietrich Gerhard Ellsaesser | Stabilised suspension for bicycle to counteract pedalling effects - has chain drive looped over sprocket on non-sprung part of damper to relieve damper loading during pedal stroke |
EP2108580A1 (en) | 2008-04-11 | 2009-10-14 | Shimano, Inc. | Tension device of bicycle derailleur |
US7905805B2 (en) | 2008-04-11 | 2011-03-15 | Shimano Inc. | Tension device of bicycle derailleur |
EP2108580B1 (en) * | 2008-04-11 | 2012-09-12 | Shimano, Inc. | Tension device of bicycle derailleur |
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