摘要:
Embodiments of a front derailleur gear shifting system including various unique chain guides attached to and operating from a single pivot point. This derailleur system provides a simple, yet, elegant and robust improvement in shifting technique over conventional, lateral motion front derailleurs. Embodiments of open and closed annulus chain guides having specially shaped lifting and pulling surfaces for acting upon a bicycle chain during shifting are also disclosed. Additionally, as an optional enhancement, a dual-sided chain catcher that prevents unintended over-shifts in either direction is disclosed.
摘要:
A bicycle front derailleur is basically provided with a base member and a movable member. The base member includes a bicycle mounting portion. The movable member is movably supported to the base member between a retracted position and an extended position relative to the base member. The movable member includes a first guide plate having a first inner surface and a second guide plate having a second inner surface. The first and second inner surfaces face each other to form a chain receiving slot therebetween. The second guide plate includes an adjustable guide member that is arranged at the chain receiving slot to move between at least two different positions relative to the second guide plate.
摘要:
The present invention relates to a chain guide device (10) for gravity or all-mountain bicycles comprising a frame (11) and a toothed chainring (12) on which the pedals are mounted. The chain guide device (10) is intended to be positioned coupled with the chainring (12) in such a way as to prevent the chain (14) of the bicycle from coming off the teeth of the chainring (12). The chain guide device (10) comprises: a top guide (20) intended during use to be positioned along the top portion of the chainring (12) and provided with a first groove (22); a bottom guide (30) intended during use to be positioned in the vicinity of the bottom portion of the chainring (12) and provided with a second groove (32); said top guide (20) and said bottom guide (30) being arranged on a support (40) by means of which the chain guide device (10) is fixed to the frame (11) of the bicycle. In accordance with the invention, the first groove (22) and the second groove (32) interact directly with portions of the chain (14) which are directly engaged with the chainring (12), coming into contact with the chain only if the chain tends to disengage from the teeth of the chainring.
摘要:
Ein Kettenführungsgerät (1) wird in Verbindung mit einem Kettenwerfer (4) an Mehrfach-Kettenradanordnungen an Fahrrädern eingesetzt, um das Abspringen der Antriebskette vom kleinsten Kettenrad in den Raum zwischen Kettenrad und Fahrradrahmen (30) zu vermeiden. Die erfindungsgemäße Ausführung eines Kettenführungsgerätes (1) ermöglicht eine besonders einfache Montage und Justierung durch Verwendung eines zusätzlichen Befestigungselementes. Das entsprechende Verfahren schließt einen vollkommenen Abschluss von Befestigung und Justierung des Kettenwerfers (4) ein, bevor das Kettenführungsgerät (1) montiert wird.
摘要:
The invention relates to a chain guide (1) for a two-wheeled vehicle, comprising a guiding part (8) through which the chain (6) passes and which is fixed on the frame of the two-wheeled vehicle via a retaining arm (12).
摘要:
The invention relates to a drive system for an e-bike comprising a drive unit and a chainring driven by the drive unit, the drive system comprising a chain guide member for limiting the radial movement of the chain to prevent a chain from jumping off the chainring, the chain guide member being attached to the drive unit.
摘要:
A bicycle structure (10) is provided with a crankset (14) and a front derailleur (16). The crankset (14) includes a plurality of chain rings (24, 26, 28), with a largest chain ring (24) of the plurality of chain rings having a plurality of teeth (24a) with teeth bottoms (24b) interposed between adjacent ones of the teeth. The front derailleur (16) includes a chain guide (32) having a chain guide slot (38) partially defined by a first chain engagement surface (41) with a protruding part (48) that protrudes outwardly from the first chain engagement surface (41) into the chain guide slot (38). The protruding part (48) is located away from the teeth bottoms (24b) of the largest chain ring (24) in a radial outside direction of the largest chain ring by a prescribed distance in a range from eight millimeters to sixteen millimeters or in a range from 90% to 190% of a maximum chain height of the chain.
摘要:
Die Erfindung betrifft eine Einrichtung zum Umlegen der Kette an einem vorderen Kettenrad für ein Fahrrad, umfassend ein kleineres Kettenrad (26), ein größeres Kettenrad (27), eine Rollenkette (28) sowie einen Kettenumwerfer (17) mit einem Kanal (23) an einer inneren Kettenführungsplatte (2), wobei der Kanal (23) an der inneren Kettenführungsplatte (2) eine Erhebung (24) aufweist, der im Zustand des beginnenden Umlegens der Rollenkette (28) vom kleineren Kettenrad (26) auf das benachbarte größere Kettenrad (27) zur Deckung kommt mit einem Kettensteigniet (31) am größeren Kettenrad, bei Betrachtung in einer Richtung parallel zur Drehachse der Kettenräder (26, 27). Die Gestaltung des Kanals (23) mit einer Erhebung an einer inneren Führungsplatte ergibt im Zusammenwirken der Rollenkette mit den Kettensteignieten und Selektionsrippen an den jeweils größeren vorderen Kettenrädern an der Tretkurbel bessere Bedingungen beim Umlegen der Rollenkette vom kleineren Kettenrad auf das größere Kettenrad.
摘要:
The present invention relates to a device (1) for stopping the lateral displacement of a bicycle chain. Such a device (1) comprises a mounting element (5) configured to be mounted on a bicycle frame (T). The mounting element (5) comprises a first portion (5a) configured to be coupled, at a first coupling axis (X), with a front derailleur (50) of a bicycle, and a second portion (5b) configured to be coupled, at a second coupling axis (Y) distinct from said first coupling axis (X), with a stop element (14) provided for stopping the lateral displacement of said chain.