DE102018111282A1 - REAR BIKE CHAIN ASSEMBLY - Google Patents

Abstract

Rear bicycle sprocket assembly includes at least one sprocket having a total number of teeth equal to or greater than fifteen. The at least one sprocket has at least ten internal splines adapted to engage a bicycle hub assembly.

Description

BACKGROUND OF THE INVENTION

REFERENCE TO OTHER APPLICATIONS

The present application claims priority to U.S. Patent Application No. 5, filed May 30, 2017. US 15 / 608,924 and US 15 / 608,915 the US patent application US 15 / 673,346 , filed August 9, 2017, and the US patent application US 15 / 673,346 patent applications US 15 / 686,177 and US 15 / 686,179 , filed on Aug. 25, 2017. The contents of these applications are incorporated herein by reference in their entirety.

FIELD OF THE INVENTION

The present invention relates to a rear bicycle sprocket assembly.

DISCUSSION OF THE BACKGROUND

Cycling is becoming an increasingly popular form of recreational activity as well as a means of transport. In addition, cycling has become a very popular competitive sport for amateurs and professionals. Whether the bicycle is used for leisure, transportation or competition, the bicycle industry is constantly improving the various components of the bicycle. A bicycle component that has been extensively revised is a powertrain.

SUMMARY OF THE INVENTION

According to a first aspect of the present invention, a rear bicycle sprocket assembly comprises at least one sprocket having a total number of teeth equal to or greater than 15 is. The at least one sprocket comprises at least ten inner spline teeth arranged for engagement with a bicycle hub assembly.

In the rear bicycle sprocket assembly of the first aspect, the at least ten internal splines reduce a rotational force applied to each of the at least ten internal splines as compared to a sprocket having nine or fewer internal splines. This improves the durability of the at least one sprocket and / or improves a degree of freedom in selecting a material of the at least one sprocket without reducing the durability of the at least one sprocket.

According to a second aspect of the present invention, the rear bicycle sprocket assembly according to the first aspect is arranged such that a total number of the at least ten inner splines equal to or greater than 20 is.

In the rear bicycle sprocket assembly of the second aspect, the at least twenty inner splines further reduce the rotational force acting on each of the at least twenty inner splines, as compared to a sprocket having nine or fewer inner splines. This further improves the durability of the at least one sprocket and / or improves a degree of freedom in selecting a material of the at least one sprocket without reducing the durability of the at least one sprocket.

According to a third aspect of the present invention, the rear bicycle sprocket assembly according to the second aspect is arranged such that the total number of the at least ten inner splines is equal to or greater than 25 is.

In the rear bicycle sprocket assembly of the third aspect, the at least twenty-five internal splines further reduce the rotational force applied to each of the at least twenty internal splines as compared to a sprocket comprising nine or fewer internal splines. This further improves the durability of the at least one sprocket and / or improves a degree of freedom in selecting a material of the at least one sprocket without reducing the durability of the at least one sprocket.

According to a fourth aspect of the present invention, the rear bicycle sprocket assembly according to any one of the first to third aspects is arranged such that the at least ten inner splines have a first inner pitch angle and a second inner pitch angle, which is different from differs from the first inner pitch angle.

In the rear bicycle sprocket assembly according to the fourth aspect, the difference between the first inner pitch angle and the second inner pitch angle assists the user to correctly attach the rear bicycle sprocket assembly to the bicycle hub assembly, particularly with respect to a circumferential position of each sprocket of the rear bicycle sprocket assembly.

According to a fifth aspect of the present invention, the rear bicycle sprocket assembly according to any one of the first to fourth aspects is arranged such that the at least one sprocket comprises at least ten sprockets.

In the rear bicycle sprocket assembly according to the fifth aspect, the at least ten sprockets cover a larger area of the rear sprocket wheel.

According to a sixth aspect of the present invention, the rear bicycle sprocket assembly according to any one of the first to fourth aspects is arranged such that the at least one sprocket comprises at least eleven sprockets.

In the rear bicycle sprocket assembly according to the sixth aspect, the at least eleven sprockets allow a larger area of the rear bicycle sprocket.

According to a seventh aspect of the present invention, the bicycle rear sprocket assembly according to any one of the first to fourth aspects is arranged such that the at least one sprocket comprises at least twelve sprockets.

In the rear bicycle sprocket assembly according to the seventh aspect, the at least twelve sprockets allow a larger area of the rear bicycle sprocket.

According to an eighth aspect of the present invention, the rear bicycle sprocket assembly according to any one of the first to seventh aspects is arranged such that the at least one sprocket comprises a plurality of sprockets and at least one inner spline arranged to engage with a bicycle hub assembly. The plurality of sprockets comprise a largest sprocket with a tooth tip diameter. The at least one inner spline has an inner spline minor diameter. A ratio of the internal spline minor diameter to the tooth tip diameter is in the range of 0.1 to 0.2.

In the rear bicycle sprocket assembly according to the eighth aspect, the ratio allows a large area of the rear bicycle sprocket assembly and improves the durability of the at least one sprocket.

According to a ninth aspect of the present invention, the rear bicycle sprocket assembly according to any one of the first to eighth aspects is arranged such that the at least one sprocket comprises a first sprocket and a second sprocket. The first sprocket has a first total number of teeth. The second sprocket has a second total number of teeth that is smaller than the first total number of teeth. The first sprocket includes at least a first shifting region for facilitating a first gear changing operation in which a bicycle chain changes from the second sprocket to the first sprocket, and at least one second shifting region for facilitating a wide shifting operation in which a bicycle chain moves from the first sprocket changes to the second sprocket.

In the rear bicycle sprocket assembly according to the ninth aspect, the at least one first shifting region and the at least one second shifting region make the first gear change operation and the second gear change operation smoother.

According to a tenth aspect of the present invention, the rear bicycle sprocket assembly according to any one of the first to ninth aspects further comprises a locking member configured to prevent axial movement of the at least one sprocket attached to a bicycle hub assembly with respect to a rotational center axis of the rear bicycle sprocket assembly. The locking member comprises a tubular body portion and a protruding portion. The tubular body portion has a central axis. The projecting portion extends radially outwardly from the tubular body portion with respect to the central axis of the tubular body portion. The tubular body portion has an externally threaded portion adapted for engagement with a female threaded portion of the bicycle hub assembly. The protruding portion is configured to abut the at least one sprocket.

In the rear bicycle sprocket assembly according to the tenth aspect, it is possible to attach the rear bicycle sprocket assembly to the bicycle hub assembly to prevent the axial movement of the at least one sprocket with respect to the bicycle hub assembly.

According to an eleventh aspect of the present invention, the rear bicycle sprocket assembly according to the tenth aspect is arranged so that the tubular body portion has a first outer diameter equal to or smaller than 26 mm.

In the rear bicycle sprocket assembly according to the eleventh aspect, the first outer diameter allows a large portion of the rear bicycle sprocket assembly and prevents the axial movement of the at least one sprocket with respect to the bicycle hub assembly.

According to a twelfth aspect of the present invention, the rear bicycle sprocket assembly according to the eleventh aspect is arranged so that the first outer diameter is equal to or larger than 25 mm.

In the rear bicycle sprocket assembly according to the twelfth aspect, the first outer diameter ensures the strength of the locking member and allows a large portion of the rear bicycle sprocket assembly.

According to a thirteenth aspect of the present invention, the rear bicycle sprocket assembly according to any one of the tenth to twelfth aspects is arranged so that the protruding portion has a second outer diameter equal to or smaller than 32 mm.

In the rear bicycle sprocket assembly according to the thirteenth aspect, the second outer diameter allows a large portion of the rear bicycle sprocket assembly and prevents the axial movement of the at least one sprocket with respect to the bicycle hub assembly.

According to a fourteenth aspect of the present invention, the rear bicycle sprocket assembly according to the thirteenth aspect is arranged so that the second outer diameter is equal to or larger than 30 mm.

In the rear bicycle sprocket assembly according to the fourteenth aspect, the second outer diameter ensures the strength of the locking member and allows a large area of the rear bicycle sprocket assembly.

According to a fifteenth aspect of the present invention, the rear bicycle sprocket assembly according to any one of the tenth to fourteenth aspects is arranged such that the locking member has a tool engagement portion.

In the rear bicycle sprocket assembly according to the fifteenth aspect, it is possible to easily attach the locking member to the bicycle hub assembly and to easily disengage the locking member from the bicycle hub assembly.

According to a sixteenth aspect of the present invention, the rear bicycle sprocket assembly according to any one of the first to fifteenth aspects further comprises a sprocket carrier. The at least one sprocket comprises a plurality of sprockets mounted on the sprocket carrier.

In the rear bicycle sprocket assembly according to the sixteenth aspect, it is possible to save weight of the rear bicycle sprocket assembly.

According to a seventeenth aspect of the present invention, the rear bicycle sprocket assembly according to the sixteenth aspect is arranged so that the plurality of sprockets are secured to the sprocket carrier with an adhesive.

In the bicycle rear sprocket assembly according to the seventeenth aspect, it is possible to reduce or eliminate a metallic fastener. This effectively saves weight of the rear bicycle sprocket assembly.

According to an eighteenth aspect of the present invention, the rear bicycle sprocket assembly according to the sixteenth or seventeenth aspect is arranged such that the sprocket carrier is made of a non-metallic material comprising a resin material.

In the bicycle rear sprocket assembly according to the eighteenth aspect, the non-metallic material effectively saves weight of the bicycle rear sprocket assembly.

According to a nineteenth aspect of the present invention, the rear bicycle sprocket assembly according to any one of the first to eighteenth aspects further comprises a rear hub abutment surface adapted to abut on a bicycle hub assembly in an axial direction with respect to a rotational center axis of the rear bicycle sprocket assembly in a state the rear bicycle sprocket assembly is attached to the bicycle hub assembly. The at least one sprocket comprises a plurality of sprockets that comprise a largest sprocket. The largest sprocket has an axially inner surface and an axially outer surface provided on a rear side of the axially inner surface in the axial direction. The axially outer surface is closer to the rear hub abutment surface than the axially inner surface in the axial direction. An axial distance defined between the axially inner surface and the rear hub abutment surface in the axial direction is equal to or larger than 7 mm.

In the rear bicycle sprocket assembly according to the nineteenth aspect, the axial distance allows a large area of the rear bicycle sprocket.

According to a twentieth aspect of the present invention, the rear bicycle sprocket assembly according to the nineteenth aspect is arranged such that the axial distance is equal to or greater than 10 mm.

Further, in the rear bicycle sprocket assembly of the twentieth aspect, the axial distance allows a larger area of the rear bicycle sprocket.

According to a twenty-first aspect of the present invention, a rear bicycle sprocket assembly comprises at least one sprocket having a total number of teeth equal to or greater than 15 is. The at least one sprocket has at least one internal spline tooth adapted for engagement with a bicycle hub assembly. The at least one inner spline has an inner spline or inner spline minor diameter equal to or less than 30 mm.

In the rear bicycle sprocket assembly according to the twenty-first aspect, it is possible to manufacture a rear bicycle sprocket having a total teeth number equal to or smaller than 10 is. Therefore, it is possible to expand a gear range of the rear bicycle sprocket assembly on one side of the upper gears. The twenty-first aspect may be combined with any one of the first to twentieth aspects.

According to a twenty-second aspect of the present invention, the rear bicycle sprocket assembly according to the twenty-first aspect is arranged so that the inner spline minor diameter is equal to or larger than 25 mm.

In the rear bicycle sprocket assembly according to the twenty-second aspect, it is possible to secure the strength of the at least one sprocket with an extension of the rear bicycle sprocket assembly gear range on one side of the upper gears.

According to a twenty-third aspect of the present invention, the rear bicycle sprocket assembly according to the twenty-first aspect is arranged so that the inner spline minor diameter is equal to or larger than 29 mm.

In the rear bicycle sprocket assembly according to the twenty-third aspect, it is possible to further ensure the strength of the at least one sprocket by widening the gear range of the rear bicycle sprocket assembly on one side of the upper gears.

According to a twenty-fourth aspect of the present invention, the rear bicycle sprocket assembly according to any one of the twenty-first to twenty-third aspect is arranged such that the at least one internal spline has an inner spline major diameter equal to or smaller than 28 mm.

In the rear bicycle sprocket assembly according to the twenty-fourth aspect, the major internal spline diameter may increase the radial length of a drive surface of the at least one internal spline. This improves the strength of the at least one sprocket.

According to a twenty-fifth aspect of the present invention, the rear bicycle sprocket assembly according to the twenty-fourth aspect is arranged so that the internal spline main diameter is equal to or larger than 25 mm.

In the rear bicycle sprocket assembly according to the twenty-fifth aspect, it is possible to secure the strength of the at least one sprocket with an extension of the gear range of the rear bicycle sprocket assembly on one side of the upper gears.

According to a twenty-sixth aspect of the present invention, the rear bicycle sprocket assembly according to the twenty-fourth or twenty-fifth aspect is arranged so that the internal spline main diameter is equal to or larger than 27 mm.

In the rear bicycle sprocket assembly according to the twenty-sixth aspect, it is possible to surely secure the strength of the at least one sprocket by expanding the gear range of the rear bicycle sprocket assembly on one side of the upper gears.

According to a twenty-seventh aspect of the present invention, the rear bicycle sprocket assembly according to any one of the twenty-first to twenty-sixth aspect is arranged such that the at least one inner spline has a plurality of inner splines having a plurality of inner splines and inner spline driving surfaces to receive a drive rotational force from the bicycle hub assembly during the pedal operation. The plurality of internal spline drive surfaces each include a radially outermost edge, a radially innermost edge, and a radial length defined from the radially outermost edge to the radially innermost edge. A total of the radial lengths is equal to or greater than 7 mm.

In the rear bicycle sprocket assembly according to the twenty-seventh aspect, it is possible to increase the radial lengths of the plurality of internal spline driving surfaces. This improves the strength of the at least one sprocket.

According to a twenty-eighth aspect of the present invention, the rear bicycle sprocket assembly according to the twenty-seventh aspect is arranged so that the total sum of the radial lengths is equal to or more than 10 mm.

In the rear bicycle sprocket assembly according to the twenty-eighth aspect, it is possible to further increase the radial lengths of the plurality of internal spline driving surfaces. This improves the strength of the at least one sprocket.

According to a twenty-ninth aspect of the present invention, the rear bicycle sprocket assembly according to the twenty-seventh aspect is arranged so that the total sum of the radial lengths is equal to or larger than 15 mm.

In the rear bicycle sprocket assembly according to the twenty-ninth aspect, it is possible to further increase the radial lengths of the plurality of internal spline driving surfaces. This further improves the strength of the at least one sprocket.

According to a thirtieth aspect of the present invention, the rear bicycle sprocket assembly according to any one of the twenty-first to twenty-ninth aspects is arranged such that the at least one sprocket comprises at least ten sprockets.

In the rear bicycle sprocket assembly of the thirtieth aspect, the at least ten sprockets allow a wide range of the rear bicycle sprocket assembly.

According to a thirty-first aspect of the present invention, the rear bicycle sprocket assembly according to any one of the twenty-first through twenty-ninth aspects is arranged such that the at least one sprocket comprises at least eleven sprockets.

In the rear bicycle sprocket assembly according to the thirty-first aspect, the at least eleven sprockets allow a large portion of the rear bicycle sprocket assembly.

According to a thirty-second aspect of the present invention, the rear bicycle sprocket assembly according to any one of the twenty-first to twenty-ninth aspects is arranged such that the at least one sprocket comprises at least twelve sprockets.

In the rear bicycle sprocket assembly according to the thirty-second aspect, the at least twelve sprockets allow a large portion of the rear bicycle sprocket assembly.

According to a thirty-third aspect of the present invention, the rear bicycle sprocket assembly according to any one of the twenty-first to thirty-second aspects is arranged such that the at least one sprocket comprises a plurality of sprockets. The plurality of sprockets comprise a largest sprocket with a tooth tip diameter. A ratio of the internal spline minor diameter to the tooth tip diameter is in the range of 0.1 to 0.2.

In the rear bicycle sprocket assembly according to the thirty-third aspect, the ratio enables a large area of the rear bicycle sprocket assembly and an improvement in the durability of the at least one sprocket.

According to a thirty-fourth aspect of the present invention, the rear bicycle sprocket assembly according to any one of the twenty-first to thirty-third aspects is arranged such that the at least one sprocket comprises a first sprocket and a second sprocket. The first sprocket has a first total number of teeth. The second sprocket has a second total number of teeth that is smaller than the first total number of teeth. The first sprocket has at least a first shifting range for facilitating a first gear changing operation in which a bicycle chain changes from the second sprocket to the first sprocket, and at least one second shifting range for facilitating a second gear changing operation of the bicycle in which the bicycle chain of the first sprocket to the second sprocket changes.

In the rear bicycle sprocket assembly according to the thirty-fourth aspect, the at least one first shifting region and the at least one second shifting region make the first shifting and the second shifting softer.

According to a thirty-fifth aspect of the present invention, the rear bicycle sprocket assembly according to any one of the twenty-first to thirty-fourth aspects further comprises a locking member configured to prevent at least one axial movement of the at least one sprocket attached to a bicycle hub assembly with respect to a rotational center axis of the rear bicycle sprocket assembly is. The locking member comprises a tubular body portion and a protruding portion. The tubular body portion has a central axis. The projecting portion extends radially outwardly from the tubular body portion with respect to the central axis of the tubular body portion. The tubular body portion has an externally threaded portion adapted for engagement with a female threaded portion of the bicycle hub assembly. The projecting portion is configured to abut the at least one sprocket.

In the rear bicycle sprocket assembly according to the thirty-fifth aspect, it is possible to attach the rear bicycle sprocket assembly to the bicycle hub assembly to prevent the axial movement of the at least one sprocket with respect to the bicycle hub assembly.

According to a thirty-sixth aspect of the present invention, the rear bicycle sprocket assembly according to the thirty-fifth aspect is arranged so that the tubular body portion has a first outer diameter equal to or smaller than 26 mm.

In the rear bicycle sprocket assembly according to the thirty-sixth aspect, the first outer diameter allows a large portion of the rear bicycle sprocket assembly and prevents the axial movement of the at least one sprocket with respect to the bicycle hub assembly.

According to a thirty-seventh aspect of the present invention, the rear bicycle sprocket assembly according to the thirty-sixth aspect is arranged so that the first outer diameter is equal to or larger than 25 mm.

In the rear bicycle sprocket assembly according to the thirty-seventh aspect, the first outer diameter ensures the strength of the locking member and enables a large portion of the rear bicycle sprocket assembly.

According to a thirty-eighth aspect of the present invention, the rear bicycle sprocket assembly according to any one of the thirty-fifth to thirty-seventh aspects is arranged so that the protruding portion has a second outer diameter equal to or smaller than 32 mm.

In the rear bicycle sprocket assembly of the thirty-eighth aspect, the second outer diameter allows a large portion of the rear bicycle sprocket assembly and prevents axial movement of the at least one sprocket relative to the bicycle hub assembly.

According to a thirty-ninth aspect of the present invention, the rear bicycle sprocket assembly according to the thirty-eighth aspect is arranged such that the second outer diameter is equal to or larger than 30 mm.

In the rear bicycle sprocket assembly according to the thirty-ninth aspect, the second outer diameter ensures the strength of the locking member and allows a large portion of the rear bicycle sprocket assembly.

According to a fortieth aspect of the present invention, the rear bicycle sprocket assembly according to any one of the thirty-fifth to thirty-ninth aspects is arranged such that the locking member has a tool engagement portion.

In the bicycle rear sprocket assembly according to the fortieth aspect, it is possible to easily attach the lock member to the bicycle hub assembly easily and release the lock member from the bicycle hub assembly.

According to a forty-first aspect of the present invention, the rear bicycle sprocket assembly according to any one of the twenty-first to fortieth aspects further comprises a sprocket carrier. The at least one sprocket comprises a plurality of sprockets mounted on the sprocket carrier.

In the rear bicycle sprocket assembly according to the forty-first aspect, it is possible to save weight of the rear bicycle sprocket assembly.

According to a forty-second aspect of the present invention, the rear bicycle sprocket assembly according to any one of the forty-first aspect is arranged so that the plural sprockets are secured to the sprocket carrier with an adhesive.

In the rear bicycle sprocket assembly according to the forty-second aspect, it is possible to reduce or eliminate a metallic fastener. This effectively saves weight of the rear bicycle sprocket assembly.

According to a forty-third aspect of the present invention, the rear bicycle sprocket assembly according to the forty-first or forty-second aspect is arranged so that the sprocket carrier is made of a non-metallic material having a resin.

In the rear bicycle sprocket assembly according to the forty-third aspect, the non-metallic material effectively saves weight of the bicycle rear sprocket assembly.

According to a forty-fourth aspect of the present invention, the rear bicycle sprocket assembly according to any one of the twenty-first to forty-third aspects further comprises a rear hub abutment surface adapted to move in an axial direction with respect to a rotational center axis of the rear bicycle sprocket assembly in a state at one Bicycle hub assembly is applied, in which the rear Fahrradkettenradanordnung is attached to the bicycle hub assembly. The at least one sprocket comprises a plurality of sprockets that comprise a largest sprocket. The largest sprocket has an axially inner surface and an axially outer surface provided on a rear side of the axially inner surface in the axial direction. The axially outer surface is closer to the rear hub abutment surface than the axially inner surface in the axial direction. An axial distance defined in the axial direction between the axially inner surface and the rear hub abutment surface is equal to or greater than 7 mm.

In the rear bicycle sprocket assembly according to the forty-fourth aspect, the axial distance allows a large area of the rear bicycle sprocket.

According to a forty-fifth aspect of the present invention, the rear bicycle sprocket assembly according to the forty-fourth aspect is arranged such that the axial distance is equal to or larger than 10 mm.

Further, in the rear bicycle sprocket assembly according to the forty-fifth aspect, the axial distance allows a larger area of the rear bicycle sprocket.

According to a forty-sixth aspect of the present invention, a rear bicycle sprocket assembly includes a plurality of sprockets, a rear hub abutment surface and an axial distance. The multiple sprockets comprise a largest sprocket. The largest sprocket has an axially inner surface and an axially outer surface provided on a rear side of the axially inner surface in an axial direction with respect to a rotational center axis of the rear bicycle sprocket assembly. The rear hub abutment surface is configured to abut axially on a bicycle hub assembly in a state in which the rear bicycle sprocket assembly is attached to the bicycle hub assembly, the axially outer surface being closer to the rear hub abutment surface in the axial direction than the axially inner surface. The axial distance defined between the axially inner surface and the rear hub bearing surface in the axial direction is equal to or greater than 7 mm.

In the rear bicycle sprocket assembly according to the forty-sixth aspect, the axial distance allows a large area of the rear bicycle sprocket.

According to a forty-seventh aspect of the present invention, the rear bicycle sprocket assembly according to the forty-sixth aspect is arranged so that the axial distance is equal to or more than 10 mm.

Further, in the rear bicycle sprocket assembly according to the forty-seventh aspect, the axial distance allows a larger area of the rear bicycle sprocket.

According to a forty-eighth aspect of the present invention, the rear bicycle sprocket assembly according to the forty-sixth or forty-seventh aspect is arranged such that the axially inner surface is positioned closer to an axial center plane of the bicycle hub assembly than the rear hub abutment surface in a state where the bicycle rear sprocket assembly attaches to the bicycle hub assembly is.

In the rear bicycle sprocket assembly according to the forty-eighth aspect, the axial distance allows a larger area of the rear bicycle sprocket.

According to a forty-ninth aspect of the present invention, the rear bicycle sprocket assembly according to any one of the forty-sixth to the forty-eighth aspect is arranged such that a total number of the plurality of sprockets 12 is.

In the rear bicycle sprocket assembly according to the forty-ninth aspect, the total number of the plurality of sprockets allows a larger area of the rear bicycle sprocket.

According to a fiftieth aspect of the present invention, the rear bicycle sprocket assembly according to any one of the forty-sixth to the forty-ninth aspect is arranged such that a total number of teeth of the largest sprocket is equal to or greater than 39 is.

In the rear bicycle sprocket assembly according to the fiftieth aspect, the total number of teeth of the largest sprocket allows a large area of the rear bicycle sprocket.

According to a fifty-first aspect of the present invention, the rear bicycle sprocket assembly according to any one of the forty-sixth to forty-ninth aspects is arranged such that a total number of teeth of the largest sprocket is equal to or greater than 45 is.

In the rear bicycle sprocket assembly according to the fifty-first aspect, the total number of teeth of the largest sprocket allows a larger area of the rear bicycle sprocket.

list of figures

• 1 ist eine schematische Darstellung eines Fahrradantriebsstrangs nach einer Ausführungsform.
• 2 ist eine perspektivische Explosionsansicht des Fahrradantriebsstrangs, der in 1 dargestellt ist.
• 3 ist eine weitere perspektivische Ansicht des in 2 dargestellten Fahrradantriebsstrangs.
• 4 ist eine Querschnittsansicht des Fahrradantriebsstrangs entlang der Linie IV-IV von 2.
• 5 ist eine perspektivische Explosionsansicht einer Fahrradnabenanordnung des Fahrradantriebsstranges, der in 2 dargestellt ist.
• 6 ist eine vergrößerte Querschnittsansicht des in 4 dargestellten Fahrradantriebs.
• 7 ist eine perspektivische Ansicht eines Kettenradträgerkörpers der Fahrradnabenanordnung des in 2 dargestellten Fahrradantriebsstrangs.
• 8 ist eine weitere perspektivische Ansicht des Kettenradträgerkörpers der Fahrradnabenanordnung des in 2 dargestellten Fahrradantriebsstrangs.
• 9 ist eine Seitenaufrissansicht des in 7 dargestellten Kettenradträgerkörpers.
• 10 ist eine Seitenaufrissansicht eines Kettenradträgerkörpers der Fahrradnabenanordnung nach einer Modifikation.
• 11 ist eine vergrößerte Querschnittsansicht des in 7 dargestellten Kettenradträgerkörpers.
• 12 ist eine Querschnittsansicht des in 7 dargestellten Kettenradträgerkörpers.
• 13 ist eine perspektivische Ansicht der Fahrradnabenanordnung des in 2 dargestellten Fahrradantriebsstrangs.
• 14 ist eine Seitenaufrissansicht der Fahrradnabenanordnung des in 2 dargestellten Fahrradantriebsstrangs.
• 15 ist eine Rückansicht der Fahrradnabenanordnung des in 2 dargestellten Fahrradantriebsstrangs.
• 16 ist eine Querschnittsansicht der Fahrradnabenanordnung entlang der Linie XVI-XVI von 5.
• 17 ist eine Seitenaufrissansicht der hinteren Fahrradkettenradanordnung des in 2 dargestellten Fahrradantriebsstrangs
• 18 ist eine perspektivische Explosionsansicht der in 17 dargestellten hinteren Fahrradkettenradanordnung.
• 19 ist eine perspektivische Teilexplosionsansicht der in 17 dargestellten hinteren Fahrradkettenradanordnung.
• 20 ist eine weitere perspektivische Teilexplosionsansicht der in 17 dargestellten hinteren Fahrradkettenradanordnung.
• 21 ist eine weitere perspektivische Teilexplosionsansicht der in 17 dargestellten hinteren Fahrradkettenradanordnung.
• 22 ist eine weitere perspektivische Teilexplosionsansicht der in 17 dargestellten hinteren Fahrradkettenradanordnung.
• 23 ist eine perspektivische Querschnittsansicht der hinteren Fahrradkettenradanordnung entlang der Linie XXIII-XXIII von 17.
• 24 ist eine perspektivische Ansicht eines kleinsten Kettenrads der in 17 dargestellten hinteren Fahrradkettenradanordnung.
• 25 ist eine weitere perspektivische Ansicht des kleinsten Kettenrads der in 17 dargestellten hinteren Fahrradkettenradanordnung.
• 26 ist eine Seitenaufrissansicht des kleinsten Kettenrads der in 17 dargestellten hinteren Fahrradkettenradanordnung.
• 27 ist eine Seitenaufrissansicht eines kleinsten Kettenrads nach einer Modifikation.
• 28 ist eine vergrößerte Querschnittsansicht des in 24 dargestellten kleinsten Kettenrads.
• 29 ist eine Querschnittsansicht des in 24 dargestellten kleinsten Kettenrads.
• 30 ist eine Querschnittsansicht des Kettenradträgerkörpers und des kleinsten Kettenrads des in 2 dargestellten Fahrradantriebsstrangs.
• 31 ist eine perspektivische Teilexplosionsansicht der in 17 dargestellten hinteren Fahrradkettenradanordnung.
• 32 ist eine perspektivische Ansicht einer Kettenradträger der in 17 dargestellten hinteren Fahrradkettenradanordnung.
• 33 ist eine Seitenaufrissansicht einer hinteren Fahrradkettenradanordnung nach einer Modifikation.
• 34 ist eine Seitenaufrissansicht eines ersten Kettenrads der in 33 dargestellten hinteren Fahrradkettenradanordnung.
• 35 ist eine perspektivische Teilansicht des ersten Kettenrads der in 33 dargestellten hinteren Fahrradkettenradanordnung.
• 36 ist eine weitere Seitenaufrissansicht eines ersten Kettenrads der in 33 dargestellten hinteren Fahrradkettenradanordnung.
• 37 ist eine weitere perspektivische Teilansicht des ersten Kettenrads der in 33 dargestellten hinteren Fahrradkettenradanordnung. 33.
• 38 ist eine vergrößerte Querschnittsansicht des Kettenradträgerkörpers nach einer Modifikation.
• 39 ist eine vergrößerte Querschnittsansicht des kleinsten Kettenrads nach einer Modifikation.

A more complete understanding of the invention and many of the attendant advantages will be readily obtained as the same becomes better understood by reference to the following detailed description when considered in conjunction with the accompanying drawings.

• 1 is a schematic representation of a bicycle drive train according to an embodiment.
• 2 FIG. 11 is an exploded perspective view of the bicycle powertrain incorporated in FIG 1 is shown.
• 3 is another perspective view of the in 2 illustrated bicycle drive train.
• 4 is a cross-sectional view of the bicycle powertrain along the line IV-IV of 2 ,
• 5 FIG. 13 is an exploded perspective view of a bicycle hub assembly of the bicycle drive train incorporated in FIG 2 is shown.
• 6 is an enlarged cross-sectional view of the in 4 illustrated bicycle drive.
• 7 FIG. 15 is a perspective view of a sprocket support body of the bicycle hub assembly of FIG 2 illustrated bicycle drive train.
• 8th FIG. 11 is another perspective view of the sprocket carrier body of the bicycle hub assembly of FIG 2 illustrated bicycle drive train.
• 9 is a side elevational view of the in 7 shown Kettenradträgerkörpers.
• 10 FIG. 10 is a side elevational view of a sprocket carrier body of the bicycle hub assembly according to a modification. FIG.
• 11 is an enlarged cross-sectional view of the in 7 shown Kettenradträgerkörpers.
• 12 is a cross-sectional view of the in 7 shown Kettenradträgerkörpers.
• 13 FIG. 15 is a perspective view of the bicycle hub assembly of FIG 2 illustrated bicycle drive train.
• 14 FIG. 11 is a side elevational view of the bicycle hub assembly of FIG 2 illustrated bicycle drive train.
• 15 is a rear view of the bicycle hub assembly of the in 2 illustrated bicycle drive train.
• 16 is a cross-sectional view of the bicycle hub assembly along the line XVI-XVI of 5 ,
• 17 FIG. 11 is a side elevational view of the rear bicycle sprocket assembly of FIG 2 illustrated bicycle drive train
• 18 FIG. 11 is an exploded perspective view of FIG 17 illustrated rear bicycle sprocket assembly.
• 19 is a perspective exploded view of the in 17 illustrated rear bicycle sprocket assembly.
• 20 is another perspective exploded view of the in 17 illustrated rear bicycle sprocket assembly.
• 21 is another perspective exploded view of the in 17 illustrated rear bicycle sprocket assembly.
• 22 is another perspective exploded view of the in 17 illustrated rear bicycle sprocket assembly.
• 23 is a perspective cross-sectional view of the rear Fahrradkettenradanordnung along the line XXIII-XXIII of 17 ,
• 24 is a perspective view of a smallest sprocket in 17 illustrated rear bicycle sprocket assembly.
• 25 is another perspective view of the smallest sprocket in 17 illustrated rear bicycle sprocket assembly.
• 26 FIG. 11 is a side elevational view of the smallest sprocket in FIG 17 illustrated rear bicycle sprocket assembly.
• 27 Fig. 11 is a side elevation view of a smallest sprocket after a modification.
• 28 is an enlarged cross-sectional view of the in 24 illustrated smallest sprocket.
• 29 is a cross-sectional view of the in 24 illustrated smallest sprocket.
• 30 is a cross-sectional view of the sprocket carrier body and the smallest sprocket of the in 2 illustrated bicycle drive train.
• 31 is a perspective exploded view of the in 17 illustrated rear bicycle sprocket assembly.
• 32 is a perspective view of a sprocket carrier in 17 illustrated rear bicycle sprocket assembly.
• 33 FIG. 11 is a side elevational view of a rear bicycle sprocket assembly according to a modification. FIG.
• 34 FIG. 11 is a side elevational view of a first sprocket of the present invention. FIG 33 illustrated rear bicycle sprocket assembly.
• 35 is a partial perspective view of the first sprocket in 33 illustrated rear bicycle sprocket assembly.
• 36 FIG. 11 is another side elevational view of a first sprocket of the present invention. FIG 33 illustrated rear bicycle sprocket assembly.
• 37 is another partial perspective view of the first sprocket in 33 illustrated rear bicycle sprocket assembly. 33rd
• 38 FIG. 10 is an enlarged cross-sectional view of the sprocket body according to a modification. FIG.
• 39 FIG. 10 is an enlarged cross-sectional view of the smallest sprocket after a modification. FIG.

DESCRIPTION OF THE EMBODIMENTS

The embodiment (s) will now be described with reference to the accompanying drawings, in which like reference characters designate corresponding or identical elements throughout the several drawings.

With initial reference to 1 includes a bicycle powertrain 10 according to one embodiment, a bicycle hub assembly 12 and a rear bicycle sprocket assembly 14 , The bicycle hub assembly 12 is on a bicycle frame BF attached. The rear bicycle sprocket assembly 14 gets on the bicycle hub assembly 12 attached. A bicycle brake rotor 16 is on the bicycle hub assembly 12 attached.

The bicycle powertrain 10 further comprises a crank assembly 18 and a bicycle chain 20 , The crank assembly 18 includes a crank axle 22 , a right crank arm 24 , a left crank arm 26 and a front sprocket 27 , The right crank arm 24 and the left crank arm 26 are on the crank axle 22 attached. The front sprocket 27 is at least one of the crank axle 22 and the right crank arm 24 attached. The bicycle chain 20 is with the front sprocket 27 and the rear bicycle sprocket assembly 14 connected to a pedaling force from the front sprocket 27 on the rear bicycle sprocket assembly 14 transferred to. The crank assembly 18 has the sprocket in the illustrated embodiment 27 as a single sprocket. The crank assembly 18 however, may have multiple front sprockets. The rear bicycle sprocket assembly 14 is a rear bicycle sprocket assembly. However, there may be structures of the rear bicycle sprocket assembly 14 be applied to the front sprocket.

In the present application, the following directional terms refer to "front", "rear", "forward", "backward", "left", "right", "across", "up" and "down", as well as other similar directional indications in those directions determined from the perspective of the user (e.g., the cyclist) sitting on a saddle (not shown) of a bicycle and facing the handlebar (not shown). Accordingly, these terms are intended to describe the bicycle powertrain 10 , the bicycle hub layout 12 or the rear bicycle sprocket assembly 14 used with respect to that with the bicycle powertrain 10 , the bicycle hub layout 12 or the rear bicycle sprocket assembly 14 equipped bicycle as it is used in an upright riding position on a horizontal surface.

As in 2 and 3 to see the bicycle hub assembly 12 and the rear bicycle sprocket assembly 14 a rotational center axis A1 on. The rear bicycle sprocket assembly 14 is through the bicycle hub assembly 12 with respect to the bicycle frame BF ( 1 ) about the rotational center axis A1 rotatably supported around. The rear bicycle sprocket assembly 14 is set up with the bike chain 20 engaged to drive torque between the bicycle chain 20 and the rear bicycle sprocket assembly 14 during pedal operation. The bicycle rear sprocket assembly becomes about the rotational center axis during the pedal operation A1 around in a driving direction D11 turned. The driving direction of rotation D11 is along a circumferential direction D1 the bicycle hub assembly 12 or the rear bicycle sprocket assembly 14 Are defined. A reverse direction of rotation D12 is an opposite direction to the driving direction D11 and is along the circumferential direction D1 Are defined.

As in 2 to see includes the bicycle hub assembly 12 a sprocket body 28 , The rear bicycle sprocket assembly 14 is on the sprocket body 28 attached to the drive torque F1 between the sprocket body 28 and the rear bicycle sprocket assembly 14 transferred to. The bicycle hub assembly 12 further comprises a hub axle 30 , The sprocket body 28 is at the hub axle 30 around the central axis of rotation A1 rotatably mounted around. The rear bicycle sprocket assembly 14 further comprises a locking element 32 , The locking element 32 is on the sprocket body 28 attached to the rear bicycle sprocket assembly 14 with respect to the sprocket body 28 in an axial direction D2 parallel to the central axis of rotation A1 to keep.

As in 4 to see is the bicycle hub layout 12 on the bicycle frame BF attached with a wheel attachment structure WS. The hub axle 30 has a through hole 30A on. A fixing rod WS1 the wheel attachment structure WS extends through the hole 30A the hub axle 30 therethrough. The hub axle 30 includes a first axle end 30B and a second axle end 30C , The hub axle 30 extends between the first axis end 30B and the second axis end 30C along the rotational center axis A1 , The first axle end 30B is in a first recess BF11 a first frame BF1 the bicycle frame BF provided. The second axis end 30C is in a second recess BF21 a second frame BF2 the bicycle frame BF provided. The hub axle 30 will be between the first frame BF1 and the second frame BF2 held with the wheel securing structure WS. The wheel securing structure WS includes a structure known in the bicycle field. Therefore, for the sake of brevity, it will not be described in detail.

As in 4 and 5 to see includes the bicycle hub assembly 12 Further, a brake rotor carrier body 34 , The brake rotor carrier body 34 is at the hub axle 30 around the central axis of rotation A1 rotatably mounted around. The brake rotor carrier body 34 is with the bicycle brake rotor 16 ( 1 ) to apply a braking torque from the bicycle brake rotor 16 to the brake rotor carrier body 34 transferred to.

As in 5 to see includes the bicycle hub assembly 12 also a hub body 36 , The hub body 36 is rotatable about the rotational center axis A1 around at the hub axle 30 attached. In this embodiment, the sprocket carrier body is 28 one from the hub body 36 separate element. The brake rotor carrier body 34 is integral with the hub body 36 provided as a one-piece unitary element. However, the sprocket body can be integral with the hub body 36 be provided. The brake rotor carrier body 34 may be one of the hub body 36 be separate element.

The hub body 36 includes a first flange 36A and a second flange 36B , First spokes (not shown) are with the first flange 36A connected. Second spokes (not shown) are with the second flange 36B connected. The second flange 36B is from the first flange 36A in the axial direction D2 spaced. The first flange 36A is in the axial direction D2 between the sprocket body 28 and the second flange 36B intended. The second flange 36B is in the axial direction D2 between the first flange 36A and the brake rotor carrier body 34 intended.

The locking ring 32 includes an externally threaded part 32A , The sprocket body 28 has a female thread part 28A on. The external thread part 32A is with the female thread part 28A in a threaded condition in which the locking ring 32 on the sprocket body 28 is attached.

As in 6 to see is the locking element 32 configured to provide axial movement of the at least one sprocket attached to the bicycle hub assembly 12 is mounted, with respect to the rotational center axis A1 the rear bicycle sprocket assembly 14 to prevent. As in 5 to see includes the locking element 32 a tubular body portion 32C and a projecting section 32B , The tubular body portion 32C has a central axis A2 on. The previous section 32B extends from the tubular body portion 32C with respect to the central axis A2 of the tubular body portion 32C radially outward. The tubular body portion 32C has the external thread part 32A on which is set up with the female thread part 28A the bicycle hub assembly 12 to get in touch.

As in 6 to see is the section above 32B arranged so that it rests against the at least one sprocket. In this embodiment, the projecting portion is 32B set to work on the sprocket SP1 to rest. The tubular body portion 32C has a first outer diameter ED1 on, which is equal to or smaller than 26 mm. The first outer diameter ED1 is equal to or greater than 25 mm. In this embodiment, the first outer diameter ED1 25,45 mm. The first outer diameter ED1 however, it is not limited to this embodiment and the above ranges. The previous section 32B has a second outer diameter ED2 on, which is equal to or smaller than 32 mm. The second outer diameter ED2 is equal to or greater than 30 mm. In this embodiment, the second outer diameter is ED2 31.5 mm. The second outer diameter ED2 however, it is not limited to this embodiment and the above ranges.

As in 5 to see, has the locking element 32 a tool engaging section 32D on. The tool engaging section 32D is at one inner circumferential surface 32C1 of the tubular body portion 32C provided to be engaged with a tool. The tool engaging section 32D includes multiple tool engagement pits 32d1 attached to the inner peripheral surface 32C1 of the tubular body portion 32C are provided. The structure of the tool engagement section 32D however, is not limited to this embodiment. The tool engaging section 32D can from the locking element 32 may be omitted or may have another shape extending from the tool engaging portion 32D in the illustrated embodiment.

As in 6 to see includes the bicycle hub assembly 12 Further, a pawl structure 38 , The sprocket body 28 is over the pawl structure 38 with the hub body 36 operatively connected. The pawl structure 38 is set up to hold the sprocket body 28 with the hub body 36 connects to the sprocket body 28 together with the hub body 36 in the drive direction of rotation D11 ( 5 ) during pedal operation. The pawl structure 38 is arranged to allow the sprocket body 28 during coasting with respect to the hub body 36 in the reverse direction D12 ( 5 ) turns. Accordingly, the pawl structure 38 in a one-way clutch structure 38 be circumscribed. The pawl structure 38 has structures known in the bicycle field. Therefore, for the sake of brevity, they will not be described in detail here.

The bicycle hub assembly 12 includes a first camp 39A and a second camp 39B , The first camp 39A and the second camp 39B are between the sprocket body 28 and the hub axle 30 provided to the sprocket body 28 with respect to the hub axle 30 around the central axis of rotation A1 rotatable support around.

In this embodiment, each of the sprocket carrier body 28 , the brake rotor carrier body 34 and the hub body 36 each made of a metallic material such as aluminum, iron or titanium. However, at least one of the sprocket body 28 , the brake rotor carrier body 34 and the hub body 36 be made of a non-metallic material.

As in 7 and 8th to see includes the Kettenradträgerkörper 28 at least one outer spline or outer spline tooth 40 for engagement with the rear bicycle sprocket assembly 14 ( 6 ) is set up. The sprocket body 28 includes several external splines 40 for engagement with the rear bicycle sprocket assembly 14 ( 6 ) are set up. That is, the at least one outer wedge tooth 40 includes several external splines 40 , The sprocket body 28 includes at least nine external wedge teeth 40 that are set to work with the rear bicycle sprocket assembly 14 ( 6 ) to be engaged. The sprocket body 28 includes at least ten outer splines 40 that are set to work with the rear bicycle sprocket assembly 14 ( 6 ) to be engaged.

The sprocket body 28 includes a base carrier 41 which has a tubular shape. The basic carrier 41 extends along the rotational center axis A1 , The outer wedge tooth 40 extends from the base carrier 41 radially outward. The sprocket body 28 includes a part 42 with larger diameter, a flange 44 and a plurality of spiral outer splines 46 , The part 42 with larger diameter and the flange 44 extend from the base carrier 41 radially outward. The part 42 with larger diameter is between the several outer splines 40 and the flange 44 in the axial direction D2 intended. The part 42 with larger diameter and the flange 44 are in the axial direction D2 between the several external splines 40 and the plurality of external spiral splines 46 intended. As in 6 The rear bicycle sprocket assembly becomes visible 14 in the axial direction D2 between the part of larger diameter 42 and a locking flange 32B of the locking ring 32 held. The part 42 with the larger diameter may have an inner cavity so that a drive structure such as a one-way clutch structure may be contained in the inner cavity. The part 42 with the larger diameter can be out of the bicycle hub assembly as needed 12 be omitted.

As in 9 to see is the total number of at least ten outer wedge teeth 40 equal to or greater than 20 , The total number of at least ten outer splines 40 is equal to or greater than 25 , In this embodiment, the total number of external splines is 40 26 , The total number of external splines 40 however, is not limited to this embodiment and the above ranges.

The at least ten outer wedge teeth 40 have a first outer pitch relationship or division angle PA11 and a second outer pitch angle PA12 on. At least two outer splines of the plurality of outer spline teeth are in the first outer pitch angle PA11 with respect to the rotational center axis A1 the bicycle hub assembly 12 arranged in the circumferential direction. At least two external splines of the plurality of external splines 40 are in the circumferential direction in the second pitch angle PA12 with respect to the rotational center axis A1 the bicycle hub assembly 12 arranged. In this embodiment, the second outer pitch angle is different PA12 from the first outer pitch angle PA11 , The second outer pitch angle PA12 however, may be substantially equal to the first outer pitch angle PA11 be.

In this embodiment, the external splines are 40 in the circumferential direction D1 in the first outer pitch angle PA11 arranged. Two external splines of external splines 40 are in the second outer pitch angle PA12 in the circumferential direction D1 arranged. However, at least two outer splines of the outer splines 40 at another outer angle in the circumferential direction D1 be arranged.

The first outer slope angle PA11 ranges from 10 degrees to 20 degrees. The first outer slope angle PA11 ranges from 12 degrees to 15 degrees. The first outer slope angle PA11 ranges from 13 degrees to 14 degrees. In this embodiment, the first outer pitch angle PA11 13.3 degrees. The first outer slope angle PA11 however, is not limited to this embodiment and the above ranges.

The second outer pitch angle PA12 ranges from 5 degrees to 30 degrees. In this embodiment, the second outer pitch angle PA12 26 degrees. The second outer pitch angle PA12 however, it is not limited to this embodiment and the above range.

The outer wedge teeth 40 have substantially the same shape. The outer wedge teeth 40 have substantially the same spline or spline size. The outer wedge teeth 40 have substantially the same profile when along the central axis of rotation A1 to be viewed as. As in 10 However, at least one of the at least ten outer splines can be seen 40 a first spline or spline shape different from a second spline shape of another of the at least ten outer spline teeth 40 different. At least one of the at least ten outer splines 40 may have a first spline size that is different from a second spline size of another of the at least ten outer splines 40 different. At least one of the at least ten outer wedge teeth 40 may have a profile that differs from a profile of another of the at least ten outer splines 40 differs when it is along the rotational center axis A1 is looked at. In 10 has one of the outer splines 40 a spline shape, which differs from a spline shape of the other teeth of the outer splines 40 different. One of the outer wedge teeth 40 has a spline size that is different from a spline or spline size of the other teeth of the outer splines 40 different. One of the outer wedge teeth 40 has a profile that differs from a profile of the other teeth of the outer splines 40 makes a difference when moving along the center axis of rotation A1 to be viewed as.

As in 11 to see, each of the at least 40 External splines an external spline drive surface 48 and an outer spline non-drive surface 50 on. The several external splines 40 include a plurality of external spline drive surfaces 48 to the drive torque F1 from the rear bicycle sprocket arrangement 14 ( 6 ) during pedal operation. The several external splines 40 include a plurality of external spline non-drive surfaces 50 , The outer wedge drive surface 48 is with the rear bicycle sprocket assembly 14 contactable to the drive torque F1 from the rear bicycle sprocket arrangement 14 ( 6 ) during pedal operation. The external spline drive surface 48 is the reverse direction D12 facing. The outer spline non-drive surface 50 is on a back side of the external spline drive surface 48 in the circumferential direction D1 intended. The outer spline non-drive surface 50 is the driving direction D11 facing, not to the drive torque F1 from the rear bicycle sprocket arrangement 14 during the pedal operation.

The at least ten outer wedge teeth 40 each have a maximum circumferential width MW1 on. The outer wedge teeth 40 each have maximum circumferential widths MW1 on. The maximum circumferential width MW1 is defined as a maximum width to one on the outer spline 40 exerted pressure force F2 take. The maximum circumferential width MW1 is as a straight distance based on the external spline drive surface 48 Are defined.

The multiple external spline drive surfaces 48 each have a radially outermost edge 48A and a radially innermost edge 48B on. The external spline drive surface 48 extends from the radially outermost edge 48A up to the radially innermost edge 48B , A first reference circle is at the radially innermost edge 48B defined and is on the rotational center axis A1 centered. The first reference circle RC11 cuts the outer spline non-drive surface 50 at a reference point 50R , The maximum circumferential width MW1 extends from the radially innermost edge 48B to the reference point 50R in the circumferential direction D1 ,

The multiple external spline non-drive surfaces 50 each have a radially outermost edge 50A and a radially innermost edge 50B on. The outer spline non-drive surface 50 extends from the radially outermost edge 50A up to the radially innermost edge 50B , The reference point 50R is between the radially outermost edge 50A and the radially innermost edge 50B intended. The reference point 50R However, with the radially innermost edge 50B coincide.

A grand total of maximum circumferential widths MW1 is equal to or greater than 55 mm. The total of the maximum circumferential widths MW1 is equal to or greater than 60 mm. The total of the maximum circumferential widths MW1 is equal to or greater than 65 mm. In this embodiment, the total of the maximum circumferential widths MW1 68 mm. The total of the maximum circumferential widths MW1 however, is not limited to this embodiment and the above ranges.

As in 12 to see, has the at least one external wedge tooth 40 an outer spline main diameter DM11 , The external spline main diameter DM11 is equal to or greater than 25 mm. The external spline main diameter DM11 is equal to or greater than 29 mm. The external spline main diameter DM11 is equal to or less than 30 mm. In this embodiment, the outer spline main diameter is DM11 29.6 mm. The external spline main diameter DM11 however, is not limited to this embodiment and the above ranges.

The at least one external wedge tooth 40 has an outer spline or outer spline diameter DM12 , The at least one external wedge tooth 40 has an outer spline base circle RC12 with the outer spline or outer spline outer diameter DM12 on. The external spline base circle RC12 however, may have a different diameter than the outer spline diameter DM12 exhibit. The outer spline diameter DM12 is equal to or less than 28 mm. The outer spline diameter DM12 is equal to or greater than 25 mm. The outer spline diameter DM12 is equal to or greater than 27 mm. In this embodiment, the outer spline diameter is DM12 27.2 mm. The outer spline diameter DM12 however, is not limited to this embodiment and the above ranges.

The part 42 with the larger diameter has an outer diameter DM13 larger than the outer diameter of the outer spline main diameter DM11 is. The outer diameter DM13 lies in the range between 32 mm and 40 mm. In this embodiment, the outer diameter DM13 35 mm. The outer diameter DM13 however, is not limited to this embodiment.

As in 11 As can be seen, the plurality of outer splines and outer spline drive surfaces respectively 48 each a radial length RL11 from the radially outermost edge 48A up to the radially innermost edge 48B is defined. The total of the radial lengths RL11 the plurality of external spline driving surfaces 48 is equal to or greater than 7 mm. The total of the radial lengths RL11 is equal to or greater than 10 mm. The total of the radial lengths RL11 is equal to or greater than 15 mm. In this embodiment, the total of the radial lengths RL11 19.5 mm. The total of the radial lengths RL11 however, is not limited to this embodiment.

The several external splines 40 have a radial length RL12 on. The radial lengths RL12 are each from the outer spline base circle RC12 to the radially outermost ends 40A of the several external splines 40 Are defined. A total of radial lengths RL12 is equal to or greater than 12 mm. In this embodiment, the total sum of the radial lengths RL12 31.85 mm. The total of the radial lengths RL12 however, is not limited to this embodiment.

At least one of the at least nine outer wedge teeth 40 has an asymmetrical shape with respect to a circumferential tooth tip centerline CL1 on. The circumferential tooth tip centerline CL1 is a line that is the center of rotation A1 and a circumferential center CP1 the radially outermost end 40A of the external spline 40 combines. However, at least one of the outer splines 40 a symmetrical shape with respect to the circumferential tooth tip centerline CL1 exhibit. The at least one of the at least nine outer wedge teeth 40 includes the external spline drive surface 48 and the outer spline non-drive surface 50 ,

The external spline drive surface 48 has a first outer spline or outer spline surface angle AG11 on. The first external spline surface angle AG11 is between the external spline drive surface 48 and a first radial line L11 Are defined. The first radial line L11 extends from the rotational center axis A1 the bicycle hub assembly 12 up to the radially outermost edge 48A the external spline drive surface 48 , The first outer slope angle PA11 or the second outer pitch angle PA12 is between the adjacent first radial lines L11 defined (see eg 9 ).

The outer spline non-drive surface 50 has a second outer spline or outer spline surface angle AG12 on. The second Externally splined surface angle AG12 is between the outer spline non-drive surface 50 and a second radial line L12 Are defined. The second radial line L12 extends from the rotational center axis A1 the bicycle hub assembly 12 up to the radially outermost edge 50A the outer spline non-drive surface 50 ,

In this embodiment, the second outer spline surface angle differs AG12 from the first outer spline surface angle AG11 , The first external spline surface angle AG11 is smaller than the second outer spline surface angle AG12 , However, the first outer spline surface angle AG11 equal to or larger than the second outer spline surface angle AG12 be.

The first external spline angle AG11 is in the range of 0 degrees to 10 degrees. The second external spline surface angle AG12 is in the range of 0 degrees to 60 degrees. In this embodiment, the first external spline surface angle is AG11 5 degrees. The second external spline surface angle AG12 is 45 degrees. The first external spline surface angle AG11 and the second external spline surface angle AG12 however, are not limited to this embodiment and the above ranges.

As in the 13 and 14 to see, the brake rotor carrier body has 34 at least one additional outer spline or external spline tooth 52 on, to engage with the bicycle brake rotor 16 ( 4 ) is set up. In this embodiment, the brake rotor carrier body 34 an additional basic carrier 54 and several additional external splines 52 on. The additional basic carrier 54 has a tubular shape and extends from the hub body 36 along the rotational center axis A1 , The additional external spline 52 extends from the additional base support 54 radially outward. A total number of additional external splines 52 is 52 , The total number of additional external splines 52 however, is not limited to this embodiment.

As in 14 to see, the at least one additional external spline tooth has an additional outer spline or outer spline main diameter DM14 on. As in 15 to see is the additional external spline main diameter DM14 larger than the outer spline main diameter DM11 , The additional external spline main diameter DM14 is essentially equal to the outer diameter DM13 of the part 42 with the larger diameter. However, the additional outer spline main diameter DM14 equal to or smaller than the outer spline main diameter DM11 be. The additional external spline main diameter DM14 can be different from the outside diameter DM13 of the part 42 differ with the larger diameter.

As in 16 to see includes the hub axle 30 an axial contact surface 30B1 to the bicycle frame BF to contact. In this embodiment, the axial contact surface 30B1 with the first frame BF1 the bicycle frame BF contactable. The first frame BF1 has a frame contact surface BF12 on. The axial contact surface 30B1 is in a state in which the bicycle hub assembly 12 on the bicycle frame BF is attached to the wheel attachment structure WS, with the frame contact surface BF12 in contact.

A first axial length AL11 is from the axial contact surface 30B1 up to the part 42 with larger diameter in the axial direction D2 with respect to the rotational center axis A1 Are defined. The first axial length AL11 ranges from 35 mm to 41 mm. The first axial length AL11 can be equal to or greater than 39 mm. The first axial length AL11 can also be in the range of 35 mm to 37 mm. In this embodiment, the first axial length AL11 36.2 mm. The first axial length AL11 however, is not limited to this embodiment and the above ranges.

The part 42 with the larger diameter has an axial end 42A on, in the axial direction D2 furthest from the axial contact surface 30B1 is removed. A second axial length AL12 is from the axial contact surface 30B1 to the axial end 42A in the axial direction D2 Are defined. The second axial length AL12 ranges from 38 mm to 47 mm. The second axial length AL12 can range from 44 mm to 45 mm. The second axial length AL12 can also be in the range of 40 mm to 41 mm. In this embodiment, the second axial length AL12 40.75 mm. The second axial length AL12 however, is not limited to this embodiment and the above ranges.

An axial length AL13 of the part 42 with larger diameter is in the range of 3 mm to 6 mm. In this embodiment, the axial length is AL13 4.55 mm. The axial length AL13 however, is not limited to this embodiment and the above ranges.

As in 17 to see includes the rear Fahrradkettenradanordnung 14 at least one sprocket. The at least one sprocket comprises a plurality of sprockets. The at least one sprocket comprises at least ten sprockets. The at least one sprocket comprises at least eleven sprockets. The at least one sprocket comprises at least twelve sprockets. The several Sprockets comprise a largest sprocket SP12 , The largest sprocket has a tooth tip diameter TD1 on. The multiple sprockets also include a smallest sprocket SP1 , The smallest sprocket SP1 can also be used as a sprocket SP1 be designated. The biggest sprocket SP12 can also be used as a sprocket SP12 be designated. In this embodiment, the at least one sprocket further comprises sprockets SP2 to SP11 , The sprocket SP1 corresponds to the highest gear. The sprocket SP12 corresponds to a low gear. In this embodiment, the total number of sprockets 12 , The total number of sprockets of the rear bicycle sprocket assembly 14 however, is not limited to this embodiment.

The smallest sprocket SP1 includes at least one sprocket tooth SP1B , A total of at least one sprocket tooth SP1B the smallest sprocket SP1 is equal to or less than 10 , In this embodiment, the total number of the at least one sprocket tooth SP1B the smallest sprocket SP1 equal 10 , The total number of at least one sprocket tooth SP1B the smallest sprocket SP1 however, it is not limited to this embodiment and the above range.

The biggest sprocket SP12 includes at least one sprocket tooth SP12B , A total number of teeth of the largest sprocket SP12 is equal to or greater than 39 , The total number of teeth of the largest sprocket SP12 is equal to or greater than 45 , A total of at least one sprocket tooth SP12B the largest sprocket SP12 is equal to or greater than 46 , The total number of at least one sprocket tooth SP12B the largest sprocket SP12 is equal to or greater than 50 , In this embodiment, the total number of the at least one sprocket tooth SP12B the largest sprocket SP12 51 , However, the total number of the at least one sprocket tooth is SP12B the largest sprocket SP12 not limited to this embodiment and the above ranges. The tooth tip diameter TD1 is a diameter of a circle made by tooth tips of sprocket teeth SP12B is defined.

The sprocket SP2 includes at least one sprocket tooth SP2B , The sprocket SP3 includes at least one sprocket tooth SP3b , The sprocket SP4 includes at least one sprocket tooth SP4B , The sprocket SP5 includes at least one sprocket tooth SP5B , The sprocket SP6 includes at least one sprocket tooth SP6B , The sprocket SP7 includes at least one sprocket tooth SP7B , The sprocket SP8 includes at least one sprocket tooth SP8B , The sprocket SP9 includes at least one sprocket tooth SP9B , The sprocket SP10 includes at least one sprocket tooth SP10B , The sprocket SP11 includes at least one sprocket tooth SP11B ,

A total of at least one sprocket tooth SP2B is 12 , A total of at least one sprocket tooth SP3b is 14 , A total of at least one sprocket tooth SP4B is 16 , A total of at least one sprocket tooth SP3b is 16 at least one sprocket tooth SP5B is 18 , A total of at least one sprocket tooth SP6B is 21 , A total of at least one sprocket tooth SP7B is 24 , A total of at least one sprocket tooth SP8B is 28 A total of at least one sprocket tooth SP9B is 33 , A total of at least one sprocket tooth SP10B is 39 , A total of at least one sprocket tooth SP11B is 45 , At least one sprocket has a total number of teeth equal to or greater than 15 is. For example, the total number of teeth of the sprocket SP4 16 , The total number of teeth of the sprocket SP5 is 18 , The total number of teeth of the sprocket SP6 is 21 , The total number of teeth of the sprocket SP7 is 24 , The total number of teeth of the sprocket SP8 is 28 The number of teeth of the sprocket SP9 is 33 , The total number of teeth of the sprocket SP10 is 39 , The total number of teeth of the sprocket SP11 is 45 , The total number of teeth of the sprocket SP12 is 51 , The total number of sprocket teeth of each of the sprockets SP2 to SP11 is not limited to this embodiment. At least one of the sprockets SP1 to SP12 may include the total number of teeth equal to or greater than 15 is.

As in 18 to see are the sprockets SP1 to SP12 separate elements. At least one of the sprockets SP1 to SP12 However, at least partially integral with another of the sprockets SP1 to SP12 be provided. The rear bicycle sprocket assembly 14 further comprises a sprocket carrier 56 , several spacers 58 , a first ring 59A and a second ring 59B , The multiple sprockets SP1 to SP12 are on the sprocket carrier in the illustrated embodiment 56 appropriate. For example, the multiple sprockets SP1 to SP12 on the sprocket carrier 56 attached with an adhesive.

As in 19 to see includes the sprocket SP1 a sprocket body SP1A and the multiple sprocket teeth SP1B , The multiple sprocket teeth SP1B extend from the sprocket body SP1A radially outward. The sprocket SP2 includes a sprocket body SP2A and the multiple sprocket teeth SP2B , The multiple sprocket teeth SP2B extend from the sprocket body SP2A radially outward. The sprocket SP3 includes a sprocket body SP3A and the multiple sprocket teeth SP3b , The several sprocket SP3b extend from the sprocket body SP3A radially outward. The sprocket SP4 includes a sprocket body SP4A and the multiple sprocket teeth SP4B , The multiple sprocket teeth SP4B extend from the sprocket body SP4A radially outward. The sprocket SP5 includes a sprocket body SP5A and the multiple sprocket teeth SP5B , The multiple sprocket teeth SP5B extend from the sprocket body SP5A radially outward. The first ring 59A is between the sprockets SP3 and SP4 intended. The second ring 59B is between the sprockets SP4 and SP5 intended.

As in 20 to see includes the sprocket SP6 a sprocket body SP6A and the multiple sprocket teeth SP6B , The multiple sprocket teeth SP6B extend from the sprocket body SP6A radially outward. The sprocket SP7 includes a sprocket body SP7A and the multiple sprocket teeth SP7B , The multiple sprocket teeth SP7B extend from the sprocket body SP7A radially outward. The sprocket SP8 includes a sprocket body SP8A and the multiple sprocket teeth SP8B , The multiple sprocket teeth SP8B extend from the sprocket body SP8A radially outward.

As in 21 to see includes the sprocket SP9 a sprocket body SP9A and the multiple sprocket teeth SP9B , The multiple sprocket teeth SP9B extend from the sprocket body SP9A radially outward. The sprocket SP10 includes a sprocket body SP10A and the multiple sprocket teeth SP10B , The multiple sprocket teeth SP10B extend from the sprocket body SP10A radially outward. The sprocket SP11 includes a sprocket body SP11A and the multiple sprocket teeth SP11B , The multiple sprocket teeth SP11B extend from the sprocket body SP11A radially outward. The sprocket SP12 includes a sprocket body SP12A and the multiple sprocket teeth SP12B , The multiple sprocket teeth SP12B extend from the sprocket body SP12A radially outward.

As in 22 To see, includes the sprocket carrier 56 a hub engaging portion 60 and several support arms 62 , The multiple support arms 62 extend from the hub engaging portion 60 radially outward. The support arm 62 includes a first to eighth attachment part 62A to 62H , The several spacers 58 have several first spacers 58A , several second spacers 58B , several third spacers 58C , several fourth spacers 58D , several fifth spacers 58E , several sixth spacers 58F and several seventh spacers 58G on.

As in 23 to see are the first spacers 58A between the sprockets SP5 and SP6 intended. The second spacers 58B are between the sprockets SP6 and SP7 intended. The third spacers 58C are between the sprockets SP7 and SP8 intended. The fourth spacers 58D are between the sprockets SP8 and SP9 intended. The fifth spacers 58E are between the sprockets SP9 and SP10 intended. The sixth spacers 58F are between the sprockets SP10 and SP11 intended. The seventh spacers 58G are between the sprockets SP11 and SP12 intended.

The sprocket SP6 and the first spacer 58A are at the first attachment portion 62A attached with a bonding structure, such as an adhesive. The sprocket SP7 and the second spacer 58B are at the second attachment portion 62B attached with a bonding structure such as an adhesive. The sprocket SP8 and the third spacer 58C are at the third attachment portion 62C attached with a bonding structure such as an adhesive. The sprocket SP9 and the spacer 58D are at the fourth attachment portion 62D attached with a bonding structure such as an adhesive. The sprocket SP10 and the fifth spacer 58E are at the fifth attachment portion 62E attached with a bonding structure such as an adhesive. The sprocket SP11 and the sixth spacer 58F are at the sixth attachment portion 62F attached with a bonding structure such as an adhesive. The sprocket SP12 and the seventh spacer 58G are at the seventh attachment section 62G attached with a bonding structure such as an adhesive. The sprocket SP5 and the second ring 59B are at the eighth attachment portion 62H attached with a bonding structure such as an adhesive. The hub engagement section 60 , the sprockets SP1 to SP4 , the first ring 59A , the second ring 59B be in the axial direction D2 between the part 42 with the larger diameter and the locking flange 32B of the locking ring 32 held.

In this embodiment, each of the sprockets SP1 to SP12 made of a metallic material such as aluminum, iron or titanium. Each of the sprocket carriers 56 , the first to seventh spacer 58A to 58G , the first ring 59A and the second ring 59B are made of a non-metallic material such as a resin material. The sprocket carrier 56 is made of a non-metallic material comprising a resin material. At least one of the sprockets SP1 to SP12 however, it may be at least partially made of a non-metallic material. At least one of the sprocket carrier 56 , the first to seventh spacers 58A and until 58G , the first ring 59A and the second ring 59B may be at least partially made of a metallic material, such as aluminum, iron or titanium.

The at least one sprocket has at least one inner spline or inner spline that engages the bicycle hub assembly 12 is set up. As in 24 and 25 To see, the at least one sprocket at least ten internal splines, which are for engagement with the bicycle hub assembly 12 are set up. The at least one internal spline has a plurality of internal splines. Thus, the at least one sprocket has a plurality of internal splines that engage with the bicycle hub assembly 12 are formed. In this embodiment, the sprocket SP1 at least ten inner splines 64 on, for engagement with the bicycle hub assembly 12 are set up. In this embodiment, the sprocket SP1 the internal splines 64 which are set up with the outer wedge teeth 40 of the sprocket carrier body 28 the bicycle hub assembly 12 to comb. The sprocket body SP1A has an annular shape. The internal splines 64 extend from the sprocket body SP1A radially inward.

As in 26 to see, the total number of internal splines is equal to or greater than 20 , The total number of internal splines is equal to or greater than 25 , In this embodiment, the total number of internal splines 64 26 , However, the total number of internal splines is not limited to these embodiments and the above ranges.

The at least ten internal splines 64 have a first inner pitch angle PA21 and a second inner pitch angle PA22 on. At least two internal splines of the multiple internal splines 64 are in the circumferential direction at a first inner pitch angle PA21 with respect to the rotational center axis A1 the rear bicycle sprocket assembly 14 arranged. At least two internal splines of the multiple internal splines 64 are in the circumferential direction at a second inner pitch angle PA22 with respect to the rotational center axis A1 arranged. In this embodiment, the second inner pitch angle is different PA22 from the first inner pitch angle PA21 , The second inner pitch angle PA22 however, may be substantially equal to the first inner pitch angle PA21 be.

In this embodiment, the internal splines are 64 in the circumferential direction in the first inner pitch angle PA21 in the circumferential direction D1 arranged. Two internal splines of the internal splines 64 are in the second inner pitch angle PA22 in the circumferential direction D1 arranged. However, at least two internal splines of the internal splines can 64 in another inner pitch angle in the circumferential direction D1 be arranged.

The first inner pitch angle PA21 ranges from 10 degrees to 20 degrees. The first inner pitch angle PA21 ranges from 12 degrees to 15 degrees. The first inner pitch angle PA21 ranges from 13 degrees to 14 degrees. In this embodiment, the first inner pitch angle PA21 13.3 degrees. The first inner pitch angle PA21 however, is not limited to this embodiment and the above ranges.

The second inner pitch angle PA22 is in the range of 5 degrees to 30 degrees. In this embodiment, the second inner pitch angle PA22 26 degrees. The second inner pitch angle PA22 however, it is not limited to this embodiment and the above range.

At least one of the at least ten inner splines 64 has a first spline shape different from a second spline shape of another of the at least ten inner splines 64 different. At least one of the at least ten inner splines 64 has a first spline or spline size that is different from a second spline size of another of the at least ten inner splines 64 different. At least one of the at least ten internal splines 64 has a cross-sectional shape extending from a cross-sectional shape of another of the at least ten inner splines 64 different. As in 27 can be seen, the internal splines 64 however, have the same shape. The internal splines 64 can be the same size The internal splines 64 may have the same cross-sectional shape.

As in 28 To see, the at least one internal spline includes 64 an internal spline drive surface 66 and an internal spline non-drive surface 68 , The at least one internal spline 64 includes several internal splines 64 , The several internal splines 64 include a plurality of internal spline drive surfaces 66 to drive torque during pedal operation F1 from the bicycle hub assembly 12 ( 6 ). The several internal splines 64 include a plurality of internal spline non-drive surfaces 68 , The internal spline drive surface 66 is with the sprocket body 28 contactable to the drive torque F1 during the pedal operation of the sprocket SP1 to the sprocket body 28 transferred to. The internal spline or internal spline drive surface 66 is the driving direction D11 facing. The inner spline or inner spline non-drive surface 68 is on a reverse side of the inner spline drive surface 66 in the circumferential direction D1 intended. The internal spline non-drive surface 68 is the reverse direction D12 turned to not drive torque during pedal operation F1 from the sprocket SP1 to the sprocket body 28 transferred to.

The at least ten internal splines 64 each have maximum circumferential widths MW2 on. The internal splines 64 have maximum circumferential widths MW2 on. The maximum circumferential width MW2 is defined as a maximum width to one on the internal spline 64 applied compressive force F3 take. The maximum circumferential width MW2 is as a straight distance based on the internal spline drive surface 66 Are defined.

The internal spline drive surface 66 has a radially outermost edge 66A and a radially innermost edge 66B on. The internal spline drive surface 66 extends from the radially outermost edge 66A up to the radially innermost edge 66B , A second reference circle RC21 is at the radially outermost edge 66A defined and is on the rotational center axis A1 centered. The second reference circle RC21 cuts the internal spline non-drive surface 68 at a reference point 68R , The maximum circumferential width MW2 extends in the circumferential direction D1 from the radially innermost edge 66B to the reference point 68R ,

The internal spline non-drive surface 68 has a radially outermost edge 68A and a radially innermost edge 68B on. The internal spline non-drive surface 68 extends from the radially outermost edge 68A up to the radially innermost edge 68B , The reference point 68R is between the radially outermost edge 68A and the radially innermost edge 68B intended.

A grand total of maximum circumferential widths MW2 is equal to or greater than 40 mm. The total of the maximum circumferential widths MW2 is equal to or greater than 45 mm. The total of the maximum circumferential widths MW2 is equal to or greater than 50 mm. In this embodiment, the total of the maximum circumferential widths MW2 50.8 mm. The total of the maximum circumferential widths MW2 however, is not limited to this embodiment.

As in 29 To see, has the at least one internal spline 64 an internal spline diameter DM21 on. The at least one internal spline 64 has an internal spline base circle RC22 with the internal spline outside diameter DM21 on. The internal spline foot circle RC22 however, may have a different diameter than the internal spline minor diameter DM21 exhibit. The internal spline outside diameter DM21 is equal to or less than 30 mm. The internal spline outside diameter DM21 is equal to or greater than 25 mm. The internal spline outside diameter DM21 is equal to or greater than 29 mm. In this embodiment, the internal spline minor diameter is DM21 29.6 mm. However, the internal spline minor diameter is DM21 not limited to this embodiment and the above ranges. In this embodiment, a ratio of the internal spline minor diameter is DM21 to the tooth tip diameter TD1 in the range of 0.1 to 0.2. The tooth tip diameter TD1 ( 1 ) of the largest sprocket SP12 ranges from 183.7 mm to 207.9 mm. The ratio of the internal spline minor diameter DM21 to the tooth tip diameter TD1 is in the range of 0.14 to 0.17. However, the ratio of the internal spline minor diameter is DM21 to the tooth tip diameter TD1 not limited to the above ranges.

The at least one internal spline 64 has an internal spline major diameter DM22 equal to or less than 28 mm. The internal spline main diameter DM22 is equal to or greater than 25 mm. The internal spline main diameter DM22 is equal to or greater than 27 mm. In this embodiment, the major internal spline diameter is DM22 27.7 mm. However, the internal spline main diameter is DM22 not limited to this embodiment and the above ranges.

As in 28 to see have the multiple internal spline drive surfaces 66 the radially outermost edge 66A and the radially innermost edge 66B on. The multiple internal spline drive surfaces 66 each comprise a radial length RL21 from the radially outermost edge 66A up to the radially innermost edge 66B is defined. A total of radial lengths RL21 the plurality of internal spline drive surfaces 66 is equal to or greater than 7 mm. The total of the radial lengths RL21 is equal to or greater than 10 mm. The total of the radial lengths RL21 is equal to or greater than 15 mm. In this embodiment, the total of the radial lengths RL21 19.5 mm. The total of the radial lengths RL21 however, is not limited to this embodiment and the above ranges.

The several internal splines 64 have an additional radial length RL22 on. The additional radial lengths RL22 are each from the Internal spline root circle RC22 up to radially innermost ends 64A of the several internal splines 64 Are defined. A total of additional radial lengths RL22 is equal to or greater than 12 mm. In this embodiment, the total of the additional radial lengths RL22 27.95 mm. The total of the additional radial lengths RL22 however, is not limited to this embodiment and the above ranges.

At least one of the internal splines 64 has an asymmetrical shape with respect to a circumferential tooth tip central axis CL2 on. The circumferential tooth tip centerline CL2 is a line that is the center of rotation A1 and a circumferential center CP2 the radially innermost end 64A of the internal spline 64 combines. However, at least one of the internal splines 64 a symmetrical shape with respect to the circumferential tooth tip centerline CL2 exhibit. The at least one of the internal splines 64 includes the internal spline drive surface 66 and the internal spline non-drive surface 68 ,

The internal spline drive surface 66 has a first inner spline or inner spline surface angle AG21 on. The first internal spline surface angle AG21 is between the internal spline drive surface 66 and a first radial line L21 Are defined. The first radial line L21 extends from the rotational center axis A1 the rear bicycle sprocket assembly 14 up to the radially outermost edge 66A the internal spline drive surface 66 , The first inner pitch angle PA21 or the second inner pitch angle PA22 is between adjacent first radial lines L21 (see eg 26 ) Are defined.

The internal spline non-drive surface 68 has a second internal spline surface angle AG22 on. The second inner spline or inner spline surface angle AG22 is between the internal spline non-drive surface 68 and a second radial line L22 Are defined. The second radial line L22 extends from the rotational center axis A1 the rear bicycle sprocket assembly 14 up to the radially outermost edge 68A the internal spline non-drive surface 68 ,

In this embodiment, the second internal spline surface angle differs AG22 from the first internal spline surface angle AG21 , The first internal spline surface angle AG21 is smaller than the second internal spline surface angle AG22 , The first internal spline surface angle AG21 however, may be equal to or greater than the second internal spline surface angle AG22 be.

The first internal spline surface angle AG21 is in the range of 0 degrees to 10 degrees. The second internal spline surface angle AG22 is in the range of 0 degrees to 60 degrees. In this embodiment, the first internal spline surface angle is AG21 5 degrees. The second internal spline surface angle AG22 is 45 degrees. However, the first internal spline surface angle is AG21 and the second internal spline surface angle AG22 not limited to this embodiment and the above ranges.

As in 30 to see, comb the internal splines 64 with the external wedge teeth 40 to the drive torque F1 from the sprocket SP1 to the sprocket body 28 transferred to. The internal spline drive surface 66 can with the external spline drive surface 48 be brought into contact with the drive torque F1 from the sprocket SP1 to the sprocket body 28 transferred to. The internal spline non-drive surface 68 is from the outer spline non-drive surface 50 spaced apart in a state in which the internal spline drive surface 66 with the external spline drive surface 48 is in contact.

As in 31 can be seen, points the sprocket SP2 several internal splines 70 on. The sprocket SP3 has several internal splines 72 on. The sprocket SP4 has several internal splines 74 on. The first ring 59A has several internal splines 76 on. As in 32 to see includes the hub engaging portion 60 the sprocket carrier 56 several internal splines 78 , The several internal splines 70 have substantially the same structure as the plurality of internal splines 64 on. The several internal splines 72 have substantially the same structure as the plurality of internal splines 64 on. The several internal splines 74 have substantially the same structure as the plurality of internal splines 64 on. The several internal splines 76 have substantially the same structure as the plurality of internal splines 64 on. The several internal splines 78 have substantially the same structure as the inner inner splines 64 on. They are therefore not described in detail here for the sake of brevity.

As in 6 to see includes the rear Fahrradkettenradanordnung 14 also a rear hub abutment surface 80 , The rear hub abutment area 80 is set up so that it attaches to the bicycle hub assembly 12 in the axial direction D2 with respect to the rotational center axis A1 the rear bicycle sprocket assembly 14 in a state in which the rear Fahrradkettenradanordnung 14 at the bicycle hub assembly 12 is attached. In this embodiment, the rear hub abutment surface is located 80 in the axial direction D2 at the part 42 larger diameter of the sprocket carrier body 28 at. The rear hub abutment area 80 is at the hub engagement part 60 of the sprocket carrier 56 intended. The position of the rear hub abutment surface 80 however, is not limited to this embodiment.

The biggest sprocket SP12 has an axially inner surface SP12C and an axially outer surface SP12D at the rear of the axially inner surface SP12C in the axial direction D2 with respect to the rotational center axis A1 the rear bicycle sprocket assembly 14 is provided. The axial outer surface SP12D is in the axial direction D2 closer to the rear hub abutment surface 80 as the axial inner surface SP12C ,

As in 15 to see has the bicycle hub assembly 12 an axial center plane CPL on which the bicycle hub assembly 12 in the axial direction D2 halved. The axial center plane CPL of the bicycle hub assembly 12 is perpendicular to the rotational center axis A1 , As in 6 to see is the axially inner surface SP12C closer to the axial center plane CPL of the bicycle hub assembly than the rear hub abutment surface 80 positioned in a condition in which the rear bicycle sprocket assembly 14 at the bicycle hub assembly 12 is attached. An axial distance AD1 which is in the axial direction D2 between the axially inner surface SP12C and the rear hub abutment area 80 is equal to or greater than 7 mm. The axial distance AD1 is equal to or greater than 10 mm. The axial distance AD1 however, it is not limited to the above ranges.

As in 9 and 10 to see includes the Kettenradträgerkörper 28 a hub indicator 281 attached to one axial end of the base support 41 is provided. The hub indicator 281 is in a range of the second outer pitch angle PA12 provided when he along the rotational center axis A1 is looked at. In this embodiment, the hub indicator 28I one point up. The hub indicator 28I however, it may also have other shapes, such as a triangle and a line. Furthermore, the hub indicator 28I a separate element attached to the sprocket body 28 for example, with a bonding structure, such as an adhesive attached. The position of the hub indicator 28I is not limited to this embodiment.

As in 26 and 27 to see includes the sprocket SP1 a sprocket indicator SP1I at one axial end of the sprocket body SP1A is provided. The sprocket indicator SP1I is in a range of the second inner pitch angle PA22 provided when he along the rotational center axis A1 is looked at. In this embodiment, the sprocket indicator SP1I one point up. The sprocket indicator SP1I however, it may also have other shapes, such as a triangle and a line. Furthermore, the sprocket indicator SP1I a separate element attached to the sprocket SP1 for example, with a bonding structure, such as an adhesive attached. The position of the sprocket wheel indicator SP1I is not limited to this embodiment. The sprocket display SP1I Can on any of the other sprockets SP2 to SP12 be provided. The sprocket indicator SP1I can also on the sprocket carrier 56 be provided.

modifications

33 provides a rear bicycle sprocket assembly 214 after a modification of the rear bicycle sprocket assembly 14 as in 33 to see includes the rear Fahrradkettenradanordnung 214 the sprocket SP1 and several sprockets SP202 to SP212 , The sprockets SP202 to SP212 have essentially the same structure as the sprockets SP2 to SP12 on. As in 33 and 34 to see includes the sprocket SP212 for example, the sprocket body SP12A and the multiple sprocket teeth SP12B ,

One of the sprockets SP202 to SP212 can also be referred to as a first sprocket. Another sprocket adjacent to the first sprocket may also be referred to as a second sprocket. The at least one sprocket of the rear bicycle sprocket assembly 214 namely, includes the first sprocket and the second sprocket. The first sprocket has a first total number of teeth. The second sprocket has a second total number of teeth that is smaller than the first total number of teeth. The second sprocket is in the axial direction D2 to the first sprocket, without another sprocket between the first sprocket and the second sprocket, adjacent.

As in 33 For example, see the first sprocket SP212 the first total number of teeth, the 51 is. The second sprocket SP211 has the second total number of teeth, the 45 is. The sprockets SP212 and SP211 can also be considered the first sprocket SP212 be designated second sprocket SP211 , The sprockets SP211 and SP210 can also be considered the first sprocket SP211 and the second sprocket SP210 be designated. The sprockets SP210 and SP209 can also be considered the first sprocket SP210 and the second sprocket SP209 be designated. The sprockets SP209 and SP208 can also be considered the first sprocket SP209 and the second sprocket SP208 be designated. The sprockets SP208 and SP207 can also be considered the first sprocket SP208 and the second sprocket SP207 be designated. The sprockets SP207 and SP206 can also be considered the first sprocket SP207 and the second Sprocket SP206 be designated. The sprockets SP206 and SP205 can also be considered the first sprocket SP206 and the second sprocket SP205 be designated. The sprockets SP205 and SP204 can also be considered the first sprocket SP205 and the second sprocket SP204 be designated. The sprockets SP204 and SP203 can also be considered the first sprocket SP204 and the second sprocket SP203 be designated. The sprockets SP203 and SP202 can also be considered the first sprocket SP203 and the second sprocket SP202 be designated. The sprockets SP202 and SP1 can also be considered the first sprocket SP202 and the second sprocket SP1 be designated.

As in 34 to see includes the first sprocket SP212 For example, at least a first switching conveyor area SP212X to facilitate a first shift in which the bicycle chain 20 from the second sprocket SP211 to the first sprocket SP212 replaced. The first sprocket SP212 includes at least a second switching conveyor area SP212Y to facilitate a second shift in which the bicycle chain 20 from the first sprocket SP212 to the second sprocket SP211 replaced. In this embodiment, the first sprocket comprises SP212 several first switching conveyor areas SP212X to facilitate the first gear shift in which the bicycle chain 20 from the second sprocket SP211 to the first sprocket SP212 replaced. The first sprocket SP212 includes several second switching conveyor areas SP212Y to facilitate the second shift, in which the bicycle chain 20 from the first sprocket SP212 to the second sprocket SP211 replaced.

The first sprocket SP212 includes several first switching wells SP212X1 and a plurality of second switching conveyor recesses SP212Y1 , The first switching well SP212X1 is in the first switching conveyor area SP212X intended. The second switching well SP212Y1 is in the second switching conveyor area SP212Y intended.

As in 35 to see, is the first switching well SP212X1 on the axially outer surface SP12D provided a fault between the first sprocket SP212 and the bicycle chain 20 ( 33 ) in the first shift. The second switching well SP212Y1 is on the axially outer surface SP12D provided a fault between the first sprocket SP212 and the bicycle chain 20 ( 33 ) in the second shift. The second switching well SP212Y1 is from the first shift well SP212X1 in the circumferential direction D1 spaced.

As in 36 to see, include the multiple sprocket teeth SP12B of the first sprocket SP212 several gear teeth SP212B1 to SP212B3 , The switching teeth SP212B1 to SP212B3 are in the second switching conveyor area SP212Y intended. As in 34 to see is the second switching area SP212Y through the second switching well SP212Y1 and the gear tooth SP212B3 in the circumferential direction D1 Are defined.

As in 37 to see, the Schaltförderzahn points SP212B1 a funding well SP212R1 on. The switching tooth SP212B2 has a funding well SP212R2 , The switching tooth SP212B3 has a funding well SP212R3 , The funding well SP212R1 is at the axially inner surface SP12C provided a derailment of the bicycle chain 20 from the first sprocket SP212 in the second switching process easier. The funding well SP212R2 is at the axially inner surface SP12C provided a derailment of the bicycle chain 20 from the first sprocket SP212 in the second switching process easier. The funding well SP212R3 is at the axially inner surface SP12C provided a derailment of the bicycle chain 20 from the first sprocket SP212 in the second switching process easier.

Each of the sprockets SP202 to SP211 has a first switching conveying area and a second switching conveying area, each having substantially the same structures as those of the first switching conveying area SP212X and the second switching conveyor area SP212Y of the first sprocket SP212 exhibit. They will not be described in detail here for the sake of brevity. As used herein, the term "shift range" is intended to be an area that is intentionally designed to facilitate a shift of a bicycle chain from one sprocket to another axially adjacent sprocket in the area.

As in 38 can see the external spline 40 in the above embodiments, a groove 40G have, in the circumferential direction D1 between the external spline drive surface 48 and the outer spline non-drive surface 50 is provided. The groove 40G reduces the weight of the bicycle hub assembly 12 ,

As in 39 can be seen in the above embodiments, the internal spline 64 a groove 64G have, in the circumferential direction D1 between the internal spline drive surface 66 and the internal spline non-drive surface 66 is provided. The groove 64G reduces the weight of the rear bicycle sprocket assembly 14 ,

The term "comprising" and its derivatives, as used herein, are to be understood as open-ended terms that specify the presence of said features, elements, components, groups, integers and / or steps, the presence of other unnamed features, elements But do not exclude components, groups, integers, and / or steps. This concept also applies to words with similar meanings, such as the terms "with", "have", and their derivatives.

The terms "limb", "section", "section", "part", "element", "body" and "structure", when used in the singular, may include the double meaning of a single part or multiple parts.

The ordinal numbers such as "first (s)", "second (s)" as given in the present application are merely identifiers, but include no other meaning such as a particular order or the like. Moreover, for example, the term "first element" itself does not imply the existence of a "second element" and the term "second element" does not itself imply the existence of a "first element".

The term "pair of" as used herein may include the configuration in which the pair of elements comprise different shapes or structures from one another in addition to the configuration in which the pair of elements have the same shapes or structures.

The terms "a" (or "a"), "one or more" and "at least one" may be used interchangeably herein.

Finally, the terms of degree such as "substantially", "about" and "approximately" as used herein mean a reasonable amount of deviation of the modified term such that the end result is not significantly changed. All numerical values described in this application may be arranged to include "substantially," "about," and "about."

Obviously, many modifications and variations of the present invention are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described herein.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 15/608924 [0001]
• US 15608915 [0001]
• US 15/673346 [0001]
• US 15686177 [0001]
• US 15686179 [0001]

Claims (22)

Rear bicycle sprocket assembly of a bicycle comprising: at least one sprocket having a total number of teeth equal to or greater than 15, the at least one sprocket including at least ten inner splines adapted for engagement with a bicycle hub assembly. Rear bicycle sprocket arrangement behind Claim 1 wherein a total number of the at least ten internal splines is equal to or greater than 20, preferably equal to or greater than 25. Rear bicycle sprocket arrangement behind Claim 1 or 2 wherein the at least ten inner splines have a first inner pitch angle and a second inner pitch angle different from the first inner pitch angle. Rear bicycle sprocket assembly after one of the Claims 1 to 3 wherein the at least one sprocket comprises a plurality of sprockets and at least one internal spline adapted to engage a bicycle hub assembly, the plurality of sprockets having a largest sprocket with a tooth tip diameter, the at least one internal spline having an inner taper diameter, and a ratio of Internal spline minor diameter to tooth tip diameter ranges from 0.1 to 0.2. Rear bicycle sprocket assembly of a bicycle comprising: at least one sprocket having a total number of teeth equal to or greater than 15, the at least one sprocket including at least one internal spline adapted for engagement with a bicycle hub assembly, the at least one internal spline having an internal spline minor diameter equal to or less than 30 mm , Rear bicycle sprocket arrangement behind Claim 5 wherein the internal spline minor diameter is equal to or greater than 25 mm, preferably equal to or greater than 29 mm. Rear bicycle sprocket arrangement behind Claim 5 or 6 wherein the at least one internal spline has a major internal spline diameter equal to or less than 28 mm, preferably wherein the major internal spline diameter is equal to or greater than 25 mm, more preferably equal to or greater than 27 mm. Rear bicycle sprocket assembly after one of the Claims 5 to 7 wherein the at least one internal spline includes a plurality of internal splines having a plurality of internal spline drive surfaces for receiving drive torque from the bicycle hub assembly during pedaling, the plurality of internal spline drive surfaces each including a radially outermost edge, a radially innermost edge, and a radial length; which is defined from the radially outermost edge to the radially innermost edge, and a total sum of the radial lengths is equal to or greater than 7 mm, preferably equal to or greater than 10 mm, more preferably equal to or greater than 15 mm. Rear bicycle sprocket assembly after one of the Claims 5 to 8th wherein the at least one sprocket comprises a plurality of sprockets, the plurality of sprockets comprising a largest sprocket having a tooth tip diameter, and a ratio of the internal spline minor diameter to the tooth tip diameter is in the range of 0.1 to 0.2. Rear bicycle sprocket assembly after one of the Claims 1 to 9 wherein the at least one sprocket comprises at least ten sprockets, preferably at least eleven sprockets, more preferably at least twelve sprockets. Rear bicycle sprocket assembly after one of the Claims 1 to 10 wherein the at least one sprocket comprises: a first sprocket having a first total number of teeth; and a second sprocket having a second total number of teeth smaller than the first total number of teeth, the first sprocket includes: at least one first shift range to facilitate a first shift in which a bicycle chain changes from the second sprocket to the first sprocket; and at least one second shifting region for facilitating a second shifting operation in which the bicycle chain changes from the first sprocket to the second sprocket. Rear bicycle sprocket assembly after one of the Claims 1 to 11 , further comprising a locking member adapted to prevent axial movement of the at least one sprocket attached to a bicycle hub assembly with respect to a rotational center axis of the rear bicycle sprocket assembly, the locking member comprising: a tubular body portion having a central axis; and a protruding portion extending radially outward from the tubular body portion with respect to the central axis of the tubular body portion, the tubular body portion having an externally threaded portion adapted to engage with a female threaded portion of the bicycle hub assembly, and the protruding portion is adapted to abut to attach a sprocket. Rear bicycle sprocket arrangement behind Claim 12 wherein the tubular body portion has a first outer diameter that is equal to or less than 26 mm, preferably, the first outer diameter is equal to or greater than 25 mm. Rear bicycle sprocket arrangement behind Claim 12 or 13 wherein the protruding portion has a second outer diameter equal to or smaller than 32 mm, preferably, the second outer diameter is equal to or larger than 30 mm. Rear bicycle sprocket assembly after one of the Claims 12 to 14 wherein the locking member comprises a tool engaging portion. Rear bicycle sprocket assembly after one of the Claims 1 to 15 further comprising a sprocket carrier, the at least one sprocket having a plurality of sprockets attached to the sprocket carrier, preferably wherein the plurality of sprockets are secured to the sprocket carrier with an adhesive. Rear bicycle sprocket arrangement behind Claim 16 wherein the sprocket carrier is made of a non-metallic material comprising resin material. Rear bicycle sprocket assembly after one of the Claims 1 to 17 10, further comprising an rear hub abutment surface configured to abut a bicycle hub assembly in an axial direction with respect to a rotational center axis of the rear bicycle sprocket assembly in a state where the rear bicycle sprocket assembly is secured to the bicycle hub assembly, wherein the at least one sprocket comprises a plurality of sprockets comprising a largest sprocket, wherein the largest sprocket has an axially inner surface and an axially outer surface on a rear side of the axially inner surface in the axial direction, the axially outer surface being closer to the rear end abutment surface than the axial direction axially inner surface, and an axial distance defined between the axially inner surface and the rear hub abutment surface in the axial direction is equal to or greater than 7 mm, preferably equal to or greater than 10 mm. Rear bicycle sprocket assembly comprising: a plurality of sprockets including a largest sprocket, the largest sprocket having an axially inner surface and an axially outer surface on a rear side of the axially inner surface in an axial direction with respect to a rotational center axis of the rear bicycle sprocket assembly; a rear hub abutment surface adapted to abut a bicycle hub assembly in the axial direction in a state in which the rear bicycle sprocket assembly is secured to the bicycle hub assembly, the axial outer surface being closer to the rear hub abutment surface in the axial direction than the axially inner surface is; and an axial distance defined between the axially inner surface and the rear hub bearing surface in the axial direction is equal to or greater than 7 mm, preferably equal to or greater than 10 mm. Rear bicycle sprocket arrangement behind Claim 19 wherein the axially inner surface is positioned closer to an axial center plane of the bicycle hub assembly than the rear hub abutment surface in a state where the rear bicycle sprocket assembly is secured to the bicycle hub assembly. Rear bicycle sprocket arrangement behind Claim 19 or 20 wherein a total number of the plurality of sprockets 12 is. Rear bicycle sprocket assembly after one of the Claims 19 to 21 in which a total number of teeth of the largest sprocket is equal to or greater than 39, preferably equal to or greater than 45.

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