TW202035184A - Sprocket support body, bicycle hub assembly, and drive train - Google Patents

Sprocket support body, bicycle hub assembly, and drive train Download PDF

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Publication number
TW202035184A
TW202035184A TW109109116A TW109109116A TW202035184A TW 202035184 A TW202035184 A TW 202035184A TW 109109116 A TW109109116 A TW 109109116A TW 109109116 A TW109109116 A TW 109109116A TW 202035184 A TW202035184 A TW 202035184A
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spline
sprocket
outer spline
teeth
diameter
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TW109109116A
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Chinese (zh)
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岡智成
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日商島野股份有限公司
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)

Abstract

A sprocket support body for a bicycle hub assembly comprises a first external spline and a second external spline. The first external spline has a first external-spline major diameter. The second external spline has a second external-spline major diameter smaller than the first external-spline major diameter. The second external-spline major diameter is smaller than 30 mm. The second external spline is undetachable from the first external spline.

Description

鏈輪支撐體、自行車輪轂總成、及傳動系統Sprocket support body, bicycle hub assembly, and transmission system

本發明關於鏈輪支撐體、自行車輪轂總成、及傳動系統。The invention relates to a sprocket support body, a bicycle hub assembly, and a transmission system.

自行車活動正變為越來越更受歡迎的娛樂形式及交通方式。此外，自行車活動對於業餘人士及專業人士兩者已經變為非常受歡迎的競賽運動。不論是自行車被使用於娛樂、交通或競賽，自行車工業正持續地改善自行車的各種不同組件。已經被廣泛地再設計的自行車組件包括傳動系統。Cycling is becoming an increasingly popular form of entertainment and transportation. In addition, cycling has become a very popular competition sport for both amateurs and professionals. Whether the bicycle is used for entertainment, transportation or competition, the bicycle industry is continuously improving the various components of the bicycle. Bicycle components that have been extensively redesigned include transmission systems.

根據本發明的第一方面，一種用於自行車輪轂總成的鏈輪支撐體包含第一外部花鍵及第二外部花鍵。第一外部花鍵具有第一外部花鍵主要直徑。第二外部花鍵具有小於第一外部花鍵主要直徑的第二外部花鍵主要直徑。第二外部花鍵主要直徑小於30 mm。第二外部花鍵不可從第一外部花鍵拆卸。According to a first aspect of the present invention, a sprocket support body for a bicycle hub assembly includes a first external spline and a second external spline. The first outer spline has a major diameter of the first outer spline. The second outer spline has a major diameter of the second outer spline that is smaller than the major diameter of the first outer spline. The main diameter of the second external spline is less than 30 mm. The second external spline cannot be detached from the first external spline.

利用根據第一方面的鏈輪支撐體，有可能將具有例如少於或等於10個齒之徑向小的鏈輪安裝在第二外部花鍵上，且將相較於徑向小的鏈輪之徑向較大的鏈輪安裝在第一外部花鍵上。With the sprocket support body according to the first aspect, it is possible to mount a radially small sprocket having, for example, less than or equal to 10 teeth, on the second external spline, and to compare the radially small sprocket The radially larger sprocket is mounted on the first outer spline.

根據本發明的第二方面，根據第一方面的鏈輪支撐體被建構，以致第二外部花鍵沿著鏈輪支撐體的旋轉中心軸線與第一外部花鍵偏位。According to a second aspect of the present invention, the sprocket support according to the first aspect is constructed such that the second outer spline is offset from the first outer spline along the rotation center axis of the sprocket support.

利用根據第二方面的鏈輪支撐體，有可能同軸地配置徑向小的鏈輪及徑向較大的鏈輪。With the sprocket support body according to the second aspect, it is possible to coaxially arrange a sprocket with a small radial direction and a sprocket with a large radial direction.

根據本發明的第三方面，根據第二方面的鏈輪支撐體被建構，以致第一外部花鍵具有沿著旋轉中心軸線所界定的第一軸向長度。第二外部花鍵具有沿著旋轉中心軸線所界定的第二軸向長度。第二軸向長度短於第一軸向長度。According to a third aspect of the present invention, the sprocket support body according to the second aspect is constructed so that the first outer spline has a first axial length defined along the rotation center axis. The second outer spline has a second axial length defined along the central axis of rotation. The second axial length is shorter than the first axial length.

利用根據第三方面的鏈輪支撐體，有可能提升鏈輪支撐體的剛性。With the sprocket support body according to the third aspect, it is possible to increase the rigidity of the sprocket support body.

根據本發明的第四方面，根據第三方面的鏈輪支撐體被建構，以致第二軸向長度短於第一軸向長度的一半。According to a fourth aspect of the present invention, the sprocket support body according to the third aspect is constructed such that the second axial length is shorter than half of the first axial length.

利用根據第四方面的鏈輪支撐體，有可能進一步提升鏈輪支撐體的剛性。With the sprocket support body according to the fourth aspect, it is possible to further increase the rigidity of the sprocket support body.

根據本發明的第五方面，根據第三或第四方面的鏈輪支撐體被建構，以致第二軸向長度長於3 mm。According to a fifth aspect of the present invention, the sprocket support body according to the third or fourth aspect is constructed so that the second axial length is longer than 3 mm.

利用根據第五方面的鏈輪支撐體，有利於將徑向小的鏈輪安裝在第二外部花鍵上。The use of the sprocket support body according to the fifth aspect facilitates the installation of the radially small sprocket on the second outer spline.

根據本發明的第六方面，根據第一至第五方面中任一者的鏈輪支撐體被建構，以致第一外部花鍵具有小於第一外部花鍵主要直徑且大於第二外部花鍵主要直徑的第一外部花鍵次要直徑。According to a sixth aspect of the present invention, the sprocket support body according to any one of the first to fifth aspects is constructed so that the first outer spline has a major diameter smaller than the first outer spline and larger than the second outer spline. The diameter of the first external spline secondary diameter.

利用根據第六方面的鏈輪支撐體，有可能將徑向較大的鏈輪藉由穿過第二外部花鍵而安裝在第一外部花鍵上。With the sprocket support body according to the sixth aspect, it is possible to mount a sprocket with a larger radial direction on the first outer spline by passing through the second outer spline.

根據本發明的第七方面，根據第六方面的鏈輪支撐體被建構，以致第一外部花鍵次要直徑與第二外部花鍵主要直徑之間的差異小於第一外部花鍵主要直徑與第一外部花鍵次要直徑之間的差異。According to a seventh aspect of the present invention, the sprocket support body according to the sixth aspect is constructed such that the difference between the primary diameter of the first external spline and the primary diameter of the second external spline is smaller than the primary diameter of the first external spline and The difference between the minor diameters of the first external spline.

利用根據第七方面的鏈輪支撐體，有可能徑向地擴大第二外部花鍵主要直徑。因此，有可能進一步提升鏈輪支撐體的剛性。With the sprocket support body according to the seventh aspect, it is possible to radially expand the main diameter of the second outer spline. Therefore, it is possible to further increase the rigidity of the sprocket support body.

根據本發明的第八方面，根據第六或第七方面的鏈輪支撐體被建構，以致第二外部花鍵具有小於第二外部花鍵主要直徑的第二外部花鍵次要直徑。第一外部花鍵次要直徑與第二外部花鍵主要直徑之間的差異小於第二外部花鍵主要直徑與第二外部花鍵次要直徑之間的差異。According to an eighth aspect of the present invention, the sprocket support according to the sixth or seventh aspect is constructed such that the second outer spline has a second outer spline minor diameter smaller than the second outer spline major diameter. The difference between the primary diameter of the first external spline and the primary diameter of the second external spline is smaller than the difference between the primary diameter of the second external spline and the secondary diameter of the second external spline.

利用根據第八方面的鏈輪支撐體，有可能徑向地擴大第二外部花鍵主要直徑，且確保足夠的第二外部花鍵的深度來固持徑向小的鏈輪。With the sprocket support body according to the eighth aspect, it is possible to radially expand the main diameter of the second outer spline and ensure a sufficient depth of the second outer spline to hold the radially small sprockets.

根據本發明的第九方面，根據第一至第八方面中任一者的鏈輪支撐體被建構，以致第一外部花鍵具有複數個第一外部花鍵齒。第一外部花鍵主要直徑由複數個第一外部花鍵齒的複數個第一徑向外齒頂所界定。第二外部花鍵具有複數個第二外部花鍵齒。第二外部花鍵主要直徑由複數個第二外部花鍵齒的複數個第二徑向外齒頂所界定。According to a ninth aspect of the present invention, the sprocket support body according to any one of the first to eighth aspects is constructed such that the first outer spline has a plurality of first outer spline teeth. The main diameter of the first outer spline is defined by the plural first radial outer tooth crests of the plural first outer spline teeth. The second external spline has a plurality of second external spline teeth. The main diameter of the second outer spline is defined by the plurality of second radial outer tooth crests of the plurality of second outer spline teeth.

利用根據第九方面的鏈輪支撐體，有可能提供第一外部花鍵來使得複數個第一外部花鍵齒構成第一外部花鍵，且提供第二外部花鍵來使得複數個第二外部花鍵齒構成第二外部花鍵。With the sprocket support body according to the ninth aspect, it is possible to provide a first external spline so that a plurality of first external spline teeth constitute a first external spline, and to provide a second external spline to make a plurality of second external splines The spline teeth constitute a second external spline.

根據本發明的第十方面，根據第九方面的鏈輪支撐體被建構，以致第一外部花鍵次要直徑由複數個第一外部花鍵齒的第一齒根圓所界定。第二外部花鍵次要直徑由複數個第二外部花鍵齒的第二齒根圓所界定。According to a tenth aspect of the present invention, the sprocket support according to the ninth aspect is constructed such that the first outer spline secondary diameter is defined by the first root circle of the plurality of first outer spline teeth. The secondary diameter of the second external spline is defined by the second root circle of the plurality of second external spline teeth.

利用根據第十方面的鏈輪支撐體，有可能提供具有第一實質相同深度的複數個第一外部花鍵齒及具有第二實質相同深度的複數個第二外部花鍵齒。With the sprocket support body according to the tenth aspect, it is possible to provide a plurality of first external spline teeth having a first substantially same depth and a plurality of second external spline teeth having a second substantially same depth.

根據本發明的第十一方面，根據第九或第十方面的鏈輪支撐體被建構，以致第一外部花鍵包括：第一周節角，其由複數個第一外部花鍵齒中的兩個鄰近的第一外部花鍵齒所界定；及第一附加周節角，其由複數個第一外部花鍵齒中的另外兩個鄰近的第一外部花鍵齒所界定，第一附加周節角與第一周節角不同。According to the eleventh aspect of the present invention, the sprocket support body according to the ninth or tenth aspect is constructed so that the first outer spline includes: a first circumferential pitch angle formed by a plurality of first outer spline teeth Two adjacent first external spline teeth; and a first additional circumferential pitch angle, which is defined by the other two adjacent first external spline teeth of the plurality of first external spline teeth, the first additional The pitch angle of the week is different from the pitch angle of the first week.

利用根據第十一方面的鏈輪支撐體，有可能將徑向較大的鏈輪相對於第一外部花鍵準確地定位。With the sprocket support body according to the eleventh aspect, it is possible to accurately position the radially larger sprocket with respect to the first outer spline.

根據本發明的第十二方面，根據第九至第十一方面中任一者的鏈輪支撐體被建構，以致第二外部花鍵包括：第二周節角，其由複數個第二外部花鍵齒中的兩個鄰近的第二外部花鍵齒所界定；及第二附加周節角，其由複數個第二外部花鍵齒中的另外兩個鄰近的第二外部花鍵齒所界定，第二附加周節角與第二周節角不同。According to the twelfth aspect of the present invention, the sprocket support body according to any one of the ninth to eleventh aspects is constructed so that the second outer spline includes: a second circumferential pitch angle formed by a plurality of second outer splines The spline teeth are bounded by two adjacent second external spline teeth; and a second additional peripheral pitch angle, which is defined by the other two adjacent second external spline teeth of the plurality of second external spline teeth Defined, the second additional circumferential pitch angle is different from the second circumferential pitch angle.

利用根據第十二方面的鏈輪支撐體，有可能將徑向小的鏈輪相對於第二外部花鍵準確地定位。With the sprocket support body according to the twelfth aspect, it is possible to accurately position the radially small sprocket with respect to the second outer spline.

根據本發明的第十三方面，根據第九至第十二方面中任一者的鏈輪支撐體被建構，以致第一外部花鍵包括第一周節角，第一周節角由複數個第一外部花鍵齒中的兩個鄰近的第一外部花鍵齒所界定。第二外部花鍵包括第二周節角，第二周節角由複數個第二外部花鍵齒中的兩個鄰近的第二外部花鍵齒所界定。第二周節角等於第一周節角。According to the thirteenth aspect of the present invention, the sprocket support body according to any one of the ninth to twelfth aspects is constructed so that the first outer spline includes a first circumferential pitch angle, and the first circumferential pitch angle is composed of a plurality of The first outer spline teeth are bounded by two adjacent first outer spline teeth. The second outer spline includes a second circumferential pitch angle defined by two adjacent second outer spline teeth of the plurality of second outer spline teeth. The pitch angle in the second week is equal to the pitch angle in the first week.

利用根據第十三方面的鏈輪支撐體，有可能容易地製造鏈輪支撐體。With the sprocket support body according to the thirteenth aspect, it is possible to easily manufacture the sprocket support body.

根據本發明的第十四方面，根據第十三方面的鏈輪支撐體被建構，以致第一外部花鍵包括第一附加周節角，第一附加周節角由複數個第一外部花鍵齒中的另外兩個鄰近的第一外部花鍵齒所界定。第一附加周節角與第一周節角不同。第二外部花鍵包括第二附加周節角，第二附加周節角由複數個第二外部花鍵齒中的另外兩個鄰近的第二外部花鍵齒所界定。第二附加周節角與第二周節角不同。第二附加周節角等於第一附加周節角。According to a fourteenth aspect of the present invention, the sprocket support body according to the thirteenth aspect is constructed such that the first outer spline includes a first additional circumferential pitch angle, and the first additional circumferential pitch angle is composed of a plurality of first outer splines The other two of the teeth are bounded by adjacent first external spline teeth. The first additional pitch angle is different from the first pitch angle. The second external spline includes a second additional circumferential pitch angle, and the second additional circumferential pitch angle is defined by the other two adjacent second external spline teeth among the plurality of second external spline teeth. The second additional pitch angle is different from the second pitch angle. The second additional pitch angle is equal to the first additional pitch angle.

利用根據第十四方面的鏈輪支撐體，有可能容易地製造鏈輪支撐體，且將徑向較大的鏈輪及徑向小的鏈輪分別相對於第一外部花鍵及第二外部花鍵準確地定位。With the sprocket support body according to the fourteenth aspect, it is possible to easily manufacture the sprocket support body, and the radially larger sprocket and the radially smaller sprocket are respectively opposed to the first outer spline and the second outer The splines are positioned accurately.

根據本發明的第十五方面，根據第一至第十四方面中任一者的鏈輪支撐體還包含軸向接觸表面，其相對於旋轉中心軸線面向軸向方向，以供與自行車鏈輪裝置接觸。第一外部花鍵在軸向方向上被設置於軸向接觸表面與第二外部花鍵之間。According to a fifteenth aspect of the present invention, the sprocket support body according to any one of the first to fourteenth aspects further includes an axial contact surface that faces in the axial direction with respect to the rotation center axis for contact with the bicycle sprocket Device contact. The first outer spline is arranged between the axial contact surface and the second outer spline in the axial direction.

利用根據第十五方面的鏈輪支撐體，軸向接觸表面有可能將自行車鏈輪裝置相對於第一外部花鍵定位。With the sprocket support body according to the fifteenth aspect, the axial contact surface makes it possible to position the bicycle sprocket device with respect to the first external spline.

根據本發明的第十六方面，根據第一至第十五方面中任一者的鏈輪支撐體還包含具有第一外直徑的第一外周圍、以及具有小於第一外直徑的第二外直徑的第二外周圍。第一外部花鍵被設置在第一外周圍上。第二外部花鍵被設置在第二外周圍上。According to a sixteenth aspect of the present invention, the sprocket support body according to any one of the first to fifteenth aspects further includes a first outer circumference having a first outer diameter, and a second outer circumference having a smaller outer diameter than the first outer diameter. The second outer circumference of the diameter. The first outer spline is provided on the first outer periphery. The second outer spline is provided on the second outer circumference.

利用根據第十六方面的鏈輪支撐體，有可能將具有例如少於或等於10個齒之徑向小的鏈輪安裝在第二外部花鍵上，且將相較於徑向小的鏈輪之徑向較大的鏈輪安裝在第一外部花鍵上。With the sprocket support body according to the sixteenth aspect, it is possible to mount a radially small sprocket having, for example, less than or equal to 10 teeth on the second outer spline, and it will be compared to the radially small chain The sprocket with the larger radial direction of the wheel is mounted on the first outer spline.

根據本發明的第十七方面，一種自行車輪轂總成包含輪轂軸、輪轂體、及如第一至第十六方面中任一者所述的鏈輪支撐體。輪轂體被繞著自行車輪轂總成的旋轉中心軸線可旋轉地安裝在輪轂軸上。鏈輪支撐體被繞著旋轉中心軸線可旋轉地安裝在輪轂軸上。According to a seventeenth aspect of the present invention, a bicycle hub assembly includes a hub axle, a hub body, and the sprocket support body according to any one of the first to sixteenth aspects. The hub body is rotatably mounted on the hub axle around the rotation center axis of the bicycle hub assembly. The sprocket support body is rotatably mounted on the hub axle around the rotation center axis.

利用根據第十七方面的自行車輪轂總成，有可能提供具有鏈輪支撐體的自行車輪轂總成，具有例如小於或等於10個齒的徑向小的鏈輪可安裝在此鏈輪支撐體上。Using the bicycle hub assembly according to the seventeenth aspect, it is possible to provide a bicycle hub assembly having a sprocket support body on which a radially small sprocket having, for example, 10 teeth or less can be mounted on the sprocket support body .

根據本發明的第十八方面，一種傳動系統包含如第十七方面所述的自行車輪轂總成、以及包括被建構成與自行車輪轂總成的鏈輪支撐體的第二外部花鍵接合的鏈輪之自行車鏈輪裝置。鏈輪具有複數個鏈輪齒，複數個鏈輪齒的總數目少於或等於10。According to an eighteenth aspect of the present invention, a transmission system includes the bicycle hub assembly as described in the seventeenth aspect, and a chain including a second outer splined engagement with a sprocket support body of the bicycle hub assembly Bicycle sprocket device for wheels. The sprocket has a plurality of sprocket teeth, and the total number of the plurality of sprocket teeth is less than or equal to 10.

利用根據第十八方面的傳動系統，有可能提供具有鏈輪支撐體的傳動系統，具有例如小於或等於10個齒的徑向小的鏈輪可安裝在此鏈輪支撐體上。With the transmission system according to the eighteenth aspect, it is possible to provide a transmission system with a sprocket support body on which a radially small sprocket having, for example, less than or equal to 10 teeth can be mounted.

根據本發明的第十九方面，根據第十八方面的傳動系統被建構，以致自行車鏈輪裝置的至少三個鏈輪被建構成與自行車輪轂總成的鏈輪支撐體的第二外部花鍵接合。According to a nineteenth aspect of the present invention, the transmission system according to the eighteenth aspect is constructed such that at least three sprockets of the bicycle sprocket device are constructed to form a second external spline with the sprocket support body of the bicycle hub assembly Splice.

利用根據第十九方面的傳動系統，有可能將至少三個徑向小的鏈輪安裝在第二外部花鍵上。With the transmission system according to the nineteenth aspect, it is possible to mount at least three radially small sprockets on the second outer spline.

現在將參照圖式來解釋實施例，其中相同元件符號在整個各種不同圖式中標示對應或相同的元件。The embodiments will now be explained with reference to the drawings, in which the same element symbols denote corresponding or identical elements throughout the various drawings.

圖1顯示根據一個實施例的自行車的傳動系統(drive train)10。傳動系統10包含自行車輪轂總成12及自行車鏈輪裝置14。自行車輪轂總成12被固定於自行車車架BF。自行車鏈輪裝置14被安裝在自行車輪轂總成12上。自行車制動器轉子16被安裝在自行車輪轂總成12上。Fig. 1 shows a drive train 10 of a bicycle according to an embodiment. The transmission system 10 includes a bicycle hub assembly 12 and a bicycle sprocket device 14. The bicycle hub assembly 12 is fixed to the bicycle frame BF. The bicycle sprocket device 14 is mounted on the bicycle hub assembly 12. The bicycle brake rotor 16 is mounted on the bicycle hub assembly 12.

傳動系統10還包含曲柄總成18及自行車鏈條20。曲柄總成18包含曲柄軸22、右曲柄臂24、左曲柄臂26、及前鏈輪27。右曲柄臂24及左曲柄臂26被固定於曲柄軸22。前鏈輪27被固定於曲柄軸22及右曲柄臂24中的至少一者。自行車鏈條20與前鏈輪27及自行車鏈輪裝置14接合，以將踩踏力從前鏈輪27傳送至自行車鏈輪裝置14。曲柄總成18在所繪示的實施例中包括作為單一個鏈輪的前鏈輪27。然而，曲柄總成18能包括複數個前鏈輪。自行車鏈輪裝置14是自行車後鏈輪裝置。然而，自行車鏈輪裝置14的結構能施加於前鏈輪。The transmission system 10 also includes a crank assembly 18 and a bicycle chain 20. The crank assembly 18 includes a crank shaft 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 fixed to the crank shaft 22. The front sprocket 27 is fixed to at least one of the crankshaft 22 and the right crank arm 24. The bicycle chain 20 is engaged with the front sprocket 27 and the bicycle sprocket device 14 to transmit the pedaling force from the front sprocket 27 to the bicycle sprocket device 14. The crank assembly 18 includes a front sprocket 27 as a single sprocket in the illustrated embodiment. However, the crank assembly 18 can include a plurality of front sprockets. The bicycle sprocket device 14 is a bicycle rear sprocket device. However, the structure of the bicycle sprocket device 14 can be applied to the front sprocket.

在本申請案中，以下方向性用語「前」、「後」、「向前」、「向後」、「左」、「右」、「橫截」、「向上」、及「向下」、以及任何其他類似的方向性用語是指基於坐在自行車的鞍座(未示出)上並面向車把(未示出)之使用者(例如，騎士)所決定的那些方向。因此，被運用來描述傳動系統10、自行車輪轂總成12、或自行車鏈輪裝置14的這些用語應相對於在水平表面上於直立騎乘位置所使用之配備有傳動系統10、自行車輪轂總成12、或自行車鏈輪裝置14的自行車來解釋。In this application, the following directional terms "front", "back", "forward", "backward", "left", "right", "cross", "up", and "down", And any other similar directional terms refer to those directions based on the user (e.g., rider) sitting on the saddle (not shown) of the bicycle and facing the handlebar (not shown). Therefore, the terms used to describe the transmission system 10, the bicycle hub assembly 12, or the bicycle sprocket assembly 14 should be used in relation to a horizontal surface equipped with a transmission system 10, a bicycle hub assembly and used in an upright riding position. 12. Or bicycle sprocket device 14 to explain.

如圖2中所見，自行車輪轂總成12及自行車鏈輪裝置14具有旋轉中心軸線A1。自行車鏈輪裝置14相對於自行車車架BF(圖1)由自行車輪轂總成12繞著旋轉中心軸線A1可旋轉地支撐。自行車輪轂裝置14被建構成與自行車鏈條20接合，以在踩踏期間於自行車鏈條20與自行車鏈輪裝置14之間傳送驅動旋轉力F1。自行車鏈輪裝置14在踩踏期間繞著旋轉中心軸線A1於驅動旋轉方向D11上被旋轉。驅動旋轉方向D11被界定成沿著自行車輪轂總成12或自行車鏈輪裝置14的環周方向D1。反向旋轉方向D12是驅動旋轉方向D11的相反方向，且被界定成沿著環周方向D1。As seen in Fig. 2, the bicycle hub assembly 12 and the bicycle sprocket device 14 have a rotation center axis A1. The bicycle sprocket device 14 is rotatably supported by the bicycle hub assembly 12 about the rotation center axis A1 relative to the bicycle frame BF (FIG. 1 ). The bicycle hub device 14 is configured to be engaged with the bicycle chain 20 to transmit the driving rotational force F1 between the bicycle chain 20 and the bicycle sprocket device 14 during pedaling. The bicycle sprocket device 14 is rotated in the driving rotation direction D11 around the rotation center axis A1 during pedaling. The driving rotation direction D11 is defined to be along the circumferential direction D1 of the bicycle hub assembly 12 or the bicycle sprocket device 14. The reverse rotation direction D12 is the opposite direction of the drive rotation direction D11, and is defined to be along the circumferential direction D1.

如圖2中所見，自行車輪轂總成12包含鏈輪支撐體28。自行車鏈輪裝置14被建構成被安裝於自行車輪轂總成12的鏈輪支撐體28。自行車鏈輪裝置14被安裝在鏈輪支撐體28上，以在鏈輪支撐體28與自行車鏈輪裝置14之間傳送驅動旋轉力F1。自行車輪轂總成12包含輪轂軸30。鏈輪支撐體28被繞著旋轉中心軸線A1可旋轉地安裝在輪轂軸30上。自行車鏈輪裝置14還包含鎖定構件32。鎖定構件32被固定於鏈輪支撐體28，以相對於旋轉中心軸線A1在軸向方向D2上將自行車鏈輪裝置14相對於鏈輪支撐體28固持。As seen in FIG. 2, the bicycle hub assembly 12 includes a sprocket support 28. The bicycle sprocket device 14 is constructed as a sprocket support body 28 mounted on the bicycle hub assembly 12. The bicycle sprocket device 14 is mounted on the sprocket support body 28 to transmit the driving rotational force F1 between the sprocket support body 28 and the bicycle sprocket device 14. The bicycle hub assembly 12 includes a hub axle 30. The sprocket support body 28 is rotatably mounted on the hub axle 30 about the rotation center axis A1. The bicycle sprocket device 14 further includes a locking member 32. The locking member 32 is fixed to the sprocket support 28 to hold the bicycle sprocket device 14 with respect to the sprocket support 28 in the axial direction D2 with respect to the rotation center axis A1.

如圖3中所見，自行車輪轂總成12利用車輪固定結構WS而被固定於自行車車架BF。輪轂軸30包括軸通孔30A。車輪固定結構WS的固定桿WS1延伸通過輪轂軸30的軸通孔30A。輪轂軸30包括第一軸端30B及第二軸端30C。輪轂軸30沿著旋轉中心軸線A1在第一軸端30B與第二軸端30C之間延伸。第一軸端30B被設置在自行車車架BF的第一車架BF1的第一凹部BF11中。第二軸端30C被設置在自行車車架BF的第二車架BF2的第二凹部BF21中。輪轂軸30利用車輪固定結構WS而被固持在第一車架BF1與第二車架BF2之間。車輪固定結構WS包括自行車領域中已知的結構。因此，為了簡潔起見，它將不會在此被詳細地描述。As seen in FIG. 3, the bicycle hub assembly 12 is fixed to the bicycle frame BF using the wheel fixing structure WS. The hub axle 30 includes a shaft through hole 30A. The fixing rod WS1 of the wheel fixing structure WS extends through the shaft through hole 30A of the hub axle 30. The hub axle 30 includes a first shaft end 30B and a second shaft end 30C. The hub shaft 30 extends along the rotation center axis A1 between the first shaft end 30B and the second shaft end 30C. The first axle end 30B is provided in the first recess BF11 of the first frame BF1 of the bicycle frame BF. The second axle end 30C is provided in the second recess BF21 of the second frame BF2 of the bicycle frame BF. The hub axle 30 is held between the first frame BF1 and the second frame BF2 by the wheel fixing structure WS. The wheel fixing structure WS includes a structure known in the bicycle field. Therefore, for the sake of brevity, it will not be described in detail here.

輪轂軸30包括軸管30X、第一軸部分30Y、及第二軸部分30Z。軸管30X具有管狀形狀且沿著旋轉中心軸線A1延伸。第一軸部分30Y被固定於軸管30X的第一端。第二軸部分30Z被固定於軸管30X的第二端。第一軸部分30Y及第二軸部分30Z中的一者能被與軸管30X一體地設置。The hub shaft 30 includes a shaft tube 30X, a first shaft portion 30Y, and a second shaft portion 30Z. The shaft tube 30X has a tubular shape and extends along the rotation center axis A1. The first shaft portion 30Y is fixed to the first end of the shaft tube 30X. The second shaft portion 30Z is fixed to the second end of the shaft tube 30X. One of the first shaft portion 30Y and the second shaft portion 30Z can be provided integrally with the shaft tube 30X.

如圖3及圖4中所見，自行車輪轂總成12還包含制動器轉子支撐體34。制動器轉子支撐體34被繞著旋轉中心軸線A1可旋轉地安裝在輪轂軸30上。制動器轉子支撐體34被耦接於自行車制動器轉子16(例如，參圖1)，以將制動旋轉力從自行車制動器轉子16傳送至制動器轉子支撐體34。As seen in FIGS. 3 and 4, the bicycle hub assembly 12 further includes a brake rotor support body 34. The brake rotor support body 34 is rotatably mounted on the hub axle 30 about the rotation center axis A1. The brake rotor support body 34 is coupled to the bicycle brake rotor 16 (for example, refer to FIG. 1) to transmit braking rotation force from the bicycle brake rotor 16 to the brake rotor support body 34.

如圖4中所見，自行車輪轂總成12包含輪轂體36。輪轂體36被繞著自行車輪轂總成12的旋轉中心軸線A1可旋轉地安裝在輪轂軸30上。在此實施例中，鏈輪支撐體28是與輪轂體36分開的構件。制動器轉子支撐體34被與輪轂體36一體地設置成為單件單體構件。然而，鏈輪支撐體28能被與輪轂體36一體地設置。制動器轉子支撐體34能為與輪轂體36分開的構件。As seen in FIG. 4, the bicycle hub assembly 12 includes a hub body 36. The hub body 36 is rotatably mounted on the hub axle 30 around the rotation center axis A1 of the bicycle hub assembly 12. In this embodiment, the sprocket support body 28 is a separate member from the hub body 36. The brake rotor support body 34 is integrally provided with the hub body 36 as a single-piece unitary member. However, the sprocket support body 28 can be provided integrally with the hub body 36. The brake rotor support body 34 can be a separate member from the hub body 36.

如圖5中所見，自行車鏈輪裝置14包括鏈輪SP1。在此實施例中，自行車鏈輪裝置14包含複數個自行車鏈輪SP1至SP12。鏈輪SP1是自行車鏈輪裝置14中最小的鏈輪。鏈輪SP1對應於自行車鏈輪裝置14中的最高速檔。鏈輪SP12是自行車鏈輪裝置14中最大的鏈輪。鏈輪SP12對應於自行車鏈輪裝置14中的最低速檔。在此實施例中，複數個自行車鏈輪的總數目等於12。然而，自行車鏈輪的總數目不受限於此實施例。例如，複數個自行車鏈輪的總數目等於或大於10。複數個自行車鏈輪的總數目能等於或大於11。複數個自行車鏈輪的總數目能等於或大於12。複數個自行車鏈輪的總數目能為13、14、或等於或大於15。As seen in FIG. 5, the bicycle sprocket device 14 includes a sprocket SP1. In this embodiment, the bicycle sprocket device 14 includes a plurality of bicycle sprockets SP1 to SP12. The sprocket SP1 is the smallest sprocket in the bicycle sprocket device 14. The sprocket SP1 corresponds to the highest gear in the bicycle sprocket device 14. The sprocket SP12 is the largest sprocket in the bicycle sprocket device 14. The sprocket SP12 corresponds to the lowest speed in the bicycle sprocket device 14. In this embodiment, the total number of bicycle sprockets is equal to 12. However, the total number of bicycle sprockets is not limited to this embodiment. For example, the total number of a plurality of bicycle sprockets is equal to or greater than 10. The total number of plural bicycle sprockets can be equal to or greater than 11. The total number of plural bicycle sprockets can be equal to or greater than 12. The total number of plural bicycle sprockets can be 13, 14, or equal to or greater than 15.

如圖4中所見，鎖定構件32包括管狀部分32A、公螺紋部32B、及徑向凸部32C。管狀部分32A包括第一軸向端32D及第二軸向端32E。第二軸向端32E相對於自行車鏈輪裝置14的旋轉中心軸線A1在軸向方向D2上與第一軸向端32D相反。As seen in FIG. 4, the locking member 32 includes a tubular portion 32A, a male threaded portion 32B, and a radial convex portion 32C. The tubular portion 32A includes a first axial end 32D and a second axial end 32E. The second axial end 32E is opposite to the first axial end 32D in the axial direction D2 with respect to the rotation center axis A1 of the bicycle sprocket device 14.

鎖定構件32具有工具接合部32F。工具接合部32F被設置在管狀部分32A的內周圍表面32A1，以與固定工具(未示出)接合。在此實施例中，工具接合部32F包括複數個接合溝槽32G，以在鎖定構件32利用公螺紋部32B及母螺紋部28A而被螺合地附接於鏈輪支撐體28時與固定工具接合。The locking member 32 has a tool engaging portion 32F. The tool engaging portion 32F is provided on the inner peripheral surface 32A1 of the tubular portion 32A to be engaged with a fixing tool (not shown). In this embodiment, the tool engaging portion 32F includes a plurality of engaging grooves 32G to fix the tool when the locking member 32 is screwedly attached to the sprocket support 28 using the male threaded portion 32B and the female threaded portion 28A Splice.

如圖6中所見，第一軸向端32D被定位成在自行車鏈輪裝置14被安裝於自行車輪轂總成12之狀態下比第二軸向端32E更接近自行車輪轂總成12的軸向中心平面CPL。軸向中心平面CPL垂直於旋轉中心軸線A1。如圖3中所見，軸向中心平面CPL被界定成在軸向方向D2上將自行車輪轂總成12的軸向長度平分成兩部分。As seen in Figure 6, the first axial end 32D is positioned closer to the axial center of the bicycle hub assembly 12 than the second axial end 32E when the bicycle sprocket device 14 is installed in the bicycle hub assembly 12 Plane CPL. The axial center plane CPL is perpendicular to the rotation center axis A1. As seen in Fig. 3, the axial center plane CPL is defined to bisect the axial length of the bicycle hub assembly 12 in the axial direction D2.

如圖6中所見，公螺紋部32B被設置於第一軸向端32D，以在自行車鏈輪裝置14被安裝於自行車輪轂總成12之狀態下與自行車輪轂總成12的鏈輪支撐體28的母螺紋部28A接合。徑向凸部32C相對於旋轉中心軸線A1從第二軸向端32E徑向向外地延伸，以在自行車鏈輪裝置14被安裝於自行車輪轂總成12之狀態下限制鏈輪SP1相對於自行車輪轂總成12的鏈輪支撐體28的軸向移動。As seen in Figure 6, the male threaded portion 32B is provided at the first axial end 32D so as to interact with the sprocket support body 28 of the bicycle hub assembly 12 in a state where the bicycle sprocket device 14 is mounted on the bicycle hub assembly 12 The female threaded portion 28A engages. The radial protrusion 32C extends radially outward from the second axial end 32E with respect to the rotation center axis A1 to restrict the sprocket SP1 relative to the bicycle hub when the bicycle sprocket device 14 is installed in the bicycle hub assembly 12 The sprocket support body 28 of the assembly 12 moves in the axial direction.

鏈輪SP1包括第一向內面向側SP1G及第一向外面向側SP1H。第一向外面向側SP1H在軸向方向D2上被設置在第一向內面向側SP1G的反向側上。徑向凸部32C被建構成在第一向外面向側SP1H抵頂鏈輪SP1。自行車鏈輪裝置14還包含鏈輪支撐構件38及環件39。環件39在軸向方向D2上被設置在鏈輪SP3與鏈輪SP4之間。環件39能被從自行車鏈輪裝置14省略。The sprocket SP1 includes a first inwardly facing side SP1G and a first outwardly facing side SP1H. The first outward facing side SP1H is disposed on the opposite side of the first inward facing side SP1G in the axial direction D2. The radial protrusion 32C is configured to abut the sprocket SP1 on the first outward facing side SP1H. The bicycle sprocket device 14 further includes a sprocket support member 38 and a ring 39. The ring 39 is provided between the sprocket SP3 and the sprocket SP4 in the axial direction D2. The ring 39 can be omitted from the bicycle sprocket device 14.

鏈輪SP1、SP2、SP3、及SP4被建構成被設置在鏈輪支撐體28上。鏈輪SP1、SP2、SP3、及SP4、以及環件39在軸向方向D2上被固持在徑向凸部32C與鏈輪支撐構件38之間。鏈輪SP5至SP12被建構成被附接於鏈輪支撐構件38。自行車鏈輪裝置14還能包含間隔件SPA1、SPA2、以及另一個附接構件AM，以將鏈輪SP5至SP12中的至少一者附接於鏈輪支撐構件38。然而，鏈輪SP5至SP12中的至少一者能在不具有鏈輪支撐構件38的情形下與鏈輪支撐體28接合。替代地，鏈輪SP4能被附接於鏈輪支撐構件38。鏈輪支撐構件38能被從自行車鏈輪裝置14省略。The sprockets SP1, SP2, SP3, and SP4 are configured to be installed on the sprocket support 28. The sprockets SP1, SP2, SP3, and SP4, and the ring 39 are held between the radial protrusion 32C and the sprocket support member 38 in the axial direction D2. The sprockets SP5 to SP12 are constructed to be attached to the sprocket support member 38. The bicycle sprocket device 14 can further include spacers SPA1, SPA2, and another attachment member AM to attach at least one of the sprockets SP5 to SP12 to the sprocket support member 38. However, at least one of the sprockets SP5 to SP12 can be engaged with the sprocket support body 28 without having the sprocket support member 38. Alternatively, the sprocket SP4 can be attached to the sprocket support member 38. The sprocket support member 38 can be omitted from the bicycle sprocket device 14.

如圖7及圖8中所見，用於自行車輪轂總成12的鏈輪支撐體28包含第一外部花鍵(spline)40及第二外部花鍵42。第二外部花鍵42沿著鏈輪支撐體28的旋轉中心軸線A1與第一外部花鍵40偏位(offset)。第二外部花鍵42在軸向方向D2上與第一外部花鍵40偏位。第二外部花鍵42在第一外部花鍵40與第二外部花鍵42之間不具有另一個外部花鍵的情形下於軸向方向D2上鄰近於第一外部花鍵40。As seen in FIGS. 7 and 8, the sprocket support body 28 for the bicycle hub assembly 12 includes a first outer spline 40 and a second outer spline 42. The second outer spline 42 is offset from the first outer spline 40 along the rotation center axis A1 of the sprocket support 28. The second outer spline 42 is offset from the first outer spline 40 in the axial direction D2. The second outer spline 42 is adjacent to the first outer spline 40 in the axial direction D2 without having another outer spline between the first outer spline 40 and the second outer spline 42.

如圖9中所見，第二外部花鍵42不可從第一外部花鍵40拆卸。第二外部花鍵42在不具有實質損壞的情形下不可從第一外部花鍵40拆卸。第二外部花鍵42在不具有實質損壞的情形下整個地不可從第一外部花鍵40拆卸。在此實施例中，鏈輪支撐體28是具有第一外部花鍵40及第二外部花鍵42的單件單體構件。然而，第二外部花鍵42能在不具有實質損壞的情形下部分地不可從第一外部花鍵40拆卸。鏈輪支撐體28包括沿著旋轉中心軸線A1延伸的管狀體43。鏈輪支撐體28是具有第一外部花鍵40、第二外部花鍵42、及管狀體43的單件單體構件。第一外部花鍵40及第二外部花鍵42被與管狀體43一體地設置成為單件單體構件。As seen in FIG. 9, the second outer spline 42 is not detachable from the first outer spline 40. The second outer spline 42 cannot be detached from the first outer spline 40 without substantial damage. The second outer spline 42 cannot be completely detached from the first outer spline 40 without substantial damage. In this embodiment, the sprocket support 28 is a single-piece unitary member having a first outer spline 40 and a second outer spline 42. However, the second outer spline 42 can be partially undetachable from the first outer spline 40 without substantial damage. The sprocket support body 28 includes a tubular body 43 extending along the rotation center axis A1. The sprocket support body 28 is a single-piece unitary member having a first outer spline 40, a second outer spline 42, and a tubular body 43. The first outer spline 40 and the second outer spline 42 are integrally provided with the tubular body 43 as a single piece member.

管狀體43包括第一管狀部分43A及第二管狀部分43B。第二管狀部分43B在軸向方向D2上從第一管狀部分43A延伸。第二管狀部分43B具有小於第一管狀部分43A的外直徑之外直徑。在此實施例中，第二管狀部分43B被與第一管狀部分43A一體地設置成為單件單體構件。The tubular body 43 includes a first tubular portion 43A and a second tubular portion 43B. The second tubular portion 43B extends from the first tubular portion 43A in the axial direction D2. The second tubular portion 43B has an outer diameter smaller than the outer diameter of the first tubular portion 43A. In this embodiment, the second tubular portion 43B is provided integrally with the first tubular portion 43A as a single-piece unitary member.

如圖10中所見，鏈輪支撐體28還包含第一外周圍44。第一外部花鍵40被設置在第一外周圍44上。第一外周圍44具有第一外直徑OD1。在此實施例中，管狀體43包括第一外周圍44。第一管狀部分43A包括第一外周圍44。As seen in FIG. 10, the sprocket support 28 also includes a first outer periphery 44. The first outer spline 40 is provided on the first outer periphery 44. The first outer periphery 44 has a first outer diameter OD1. In this embodiment, the tubular body 43 includes a first outer periphery 44. The first tubular portion 43A includes a first outer periphery 44.

如圖11中所見，鏈輪支撐體28還包含第二外周圍46。第二外部花鍵42被設置在第二外周圍46上。第二外周圍46具有第二外直徑OD2。在此實施例中，管狀體43包括第二外周圍46。第二管狀部分43B包括第二外周圍46。如圖7中所見，第二外直徑OD2小於第一外直徑OD1。如圖9中所見，第二外周圍46在軸向方向D2上與第一外周圍44偏位。As seen in FIG. 11, the sprocket support 28 also includes a second outer periphery 46. The second outer spline 42 is provided on the second outer periphery 46. The second outer periphery 46 has a second outer diameter OD2. In this embodiment, the tubular body 43 includes a second outer periphery 46. The second tubular portion 43B includes a second outer periphery 46. As seen in Figure 7, the second outer diameter OD2 is smaller than the first outer diameter OD1. As seen in FIG. 9, the second outer periphery 46 is offset from the first outer periphery 44 in the axial direction D2.

如圖10中所見，第一外部花鍵40具有複數個第一外部花鍵齒48。複數個第一外部花鍵齒48被設置在第一外周圍44上。複數個第一外部花鍵齒48從第一外周圍44徑向向外地延伸。複數個第一外部花鍵齒48從管狀體43的第一管狀部分43A徑向向外地延伸。在此實施例中，複數個第一外部花鍵齒48被與管狀體43一體地設置成為單件單體構件。複數個第一外部花鍵齒48被與管狀體43的第一管狀部分43A一體地設置成為單件單體構件。As seen in FIG. 10, the first outer spline 40 has a plurality of first outer spline teeth 48. A plurality of first outer spline teeth 48 are provided on the first outer periphery 44. A plurality of first outer spline teeth 48 extend radially outward from the first outer periphery 44. A plurality of first outer spline teeth 48 extend radially outward from the first tubular portion 43A of the tubular body 43. In this embodiment, a plurality of first outer spline teeth 48 are integrally provided with the tubular body 43 as a single-piece unitary member. The plurality of first outer spline teeth 48 are integrally provided with the first tubular portion 43A of the tubular body 43 as a single-piece unitary member.

如圖11中所見，第二外部花鍵42具有複數個第二外部花鍵齒50。複數個第二外部花鍵齒50被設置在第二外周圍46上。複數個第二外部花鍵齒50從第二外周圍46徑向向外地延伸。複數個第二外部花鍵齒50從管狀體43的第二管狀部分43B徑向向外地延伸。在此實施例中，複數個第二外部花鍵齒50被與管狀體43一體地設置成為單件單體構件。複數個第二外部花鍵齒50被與管狀體43的第二管狀部分43B一體地設置成為單件單體構件。As seen in FIG. 11, the second outer spline 42 has a plurality of second outer spline teeth 50. A plurality of second outer spline teeth 50 are provided on the second outer periphery 46. A plurality of second outer spline teeth 50 extend radially outward from the second outer periphery 46. A plurality of second outer spline teeth 50 extend radially outward from the second tubular portion 43B of the tubular body 43. In this embodiment, a plurality of second external spline teeth 50 are integrally provided with the tubular body 43 as a single-piece unitary member. A plurality of second external spline teeth 50 are integrally provided with the second tubular portion 43B of the tubular body 43 as a single-piece single member.

如圖6中所見，鏈輪SP4及鏈輪支撐構件38被建構成與自行車輪轂總成12的鏈輪支撐體28的第一外部花鍵40接合。更確切地，如圖2中所見，鏈輪支撐構件38具有複數個內部花鍵齒51，其被建構成與第一外部花鍵40的第一外部花鍵齒48接合。如圖12中所見，鏈輪SP4具有複數個內部花鍵齒SP4T，其被建構成與第一外部花鍵40的複數個第一外部花鍵齒48接合。As seen in FIG. 6, the sprocket SP4 and the sprocket support member 38 are configured to engage with the first outer spline 40 of the sprocket support 28 of the bicycle hub assembly 12. More precisely, as seen in FIG. 2, the sprocket support member 38 has a plurality of internal spline teeth 51 that are configured to engage with the first external spline teeth 48 of the first external spline 40. As seen in FIG. 12, the sprocket SP4 has a plurality of internal spline teeth SP4T, which are configured to engage with the plurality of first external spline teeth 48 of the first external spline 40.

如圖6中所見，自行車鏈輪裝置14的至少三個鏈輪SP1、SP2、及SP3被建構成與自行車輪轂總成12的鏈輪支撐體28的第二外部花鍵42接合。更確切地，如圖13至圖15中所見，至少三個鏈輪SP1、SP2、及SP3被建構成與第二外部花鍵42的複數個第二外部花鍵齒50接合。As seen in FIG. 6, at least three sprockets SP1, SP2, and SP3 of the bicycle sprocket device 14 are configured to engage with the second outer splines 42 of the sprocket support body 28 of the bicycle hub assembly 12. More precisely, as seen in FIGS. 13 to 15, at least three sprockets SP1, SP2, and SP3 are constructed to be engaged with a plurality of second outer spline teeth 50 of the second outer spline 42.

如圖13中所見，鏈輪SP1被建構成與自行車輪轂總成12的鏈輪支撐體28的第二外部花鍵42接合。鏈輪SP1包括複數個內部花鍵齒SP1T，其被建構成與第二外部花鍵42的複數個第二外部花鍵齒50接合。As seen in FIG. 13, the sprocket SP1 is constructed to engage with the second outer spline 42 of the sprocket support 28 of the bicycle hub assembly 12. The sprocket SP1 includes a plurality of internal spline teeth SP1T, which are configured to engage with the plurality of second external spline teeth 50 of the second external spline 42.

如圖14中所見，鏈輪SP2被建構成與自行車輪轂總成12的鏈輪支撐體28的第二外部花鍵42接合。鏈輪SP2包括複數個內部花鍵齒SP2T，其被建構成與第二外部花鍵42的複數個第二外部花鍵齒50接合。As seen in FIG. 14, the sprocket SP2 is constructed to engage with the second outer spline 42 of the sprocket support 28 of the bicycle hub assembly 12. The sprocket SP2 includes a plurality of internal spline teeth SP2T, which are configured to engage with the plurality of second external spline teeth 50 of the second external spline 42.

如圖15中所見，鏈輪SP3被建構成與自行車輪轂總成12的鏈輪支撐體28的第二外部花鍵42接合。鏈輪SP3包括複數個內部花鍵齒SP3T，其被建構成與第二外部花鍵42的複數個第二外部花鍵齒50接合。As seen in FIG. 15, the sprocket SP3 is constructed to engage with the second outer spline 42 of the sprocket support 28 of the bicycle hub assembly 12. The sprocket SP3 includes a plurality of internal spline teeth SP3T, which are configured to engage with the plurality of second external spline teeth 50 of the second external spline 42.

如圖7中所見，鏈輪支撐體28包括較大直徑部分52、凸緣54、及複數個螺旋外部花鍵齒56。較大直徑部分52及凸緣54從底座支撐部41徑向向外地延伸。較大直徑部分52在軸向方向D2上被設置於複數個第一外部花鍵齒48與凸緣54之間。較大直徑部分52及凸緣54在軸向方向D2上被設置於複數個第一外部花鍵齒48與複數個螺旋外部花鍵齒56之間。如圖6中所見，自行車鏈輪裝置14在軸向方向D2上被固持於較大直徑部分52與鎖定構件32的徑向凸部32C之間。較大直徑部分52可具有內部空腔，以致像是單向離合器結構的驅動結構能被容納在此內部空間內。較大直徑部分52能根據需求而被從自行車輪轂總成12省略。As seen in FIG. 7, the sprocket support body 28 includes a larger diameter portion 52, a flange 54, and a plurality of spiral external spline teeth 56. The larger diameter portion 52 and the flange 54 extend radially outward from the base support portion 41. The larger diameter portion 52 is provided between the plurality of first outer spline teeth 48 and the flange 54 in the axial direction D2. The larger diameter portion 52 and the flange 54 are disposed between the plurality of first external spline teeth 48 and the plurality of helical external spline teeth 56 in the axial direction D2. As seen in FIG. 6, the bicycle sprocket device 14 is held between the larger diameter portion 52 and the radial convex portion 32C of the locking member 32 in the axial direction D2. The larger diameter portion 52 may have an internal cavity so that a driving structure like a one-way clutch structure can be accommodated in this internal space. The larger diameter portion 52 can be omitted from the bicycle hub assembly 12 as required.

如圖6及圖7中所見，鏈輪支撐體28包括第一軸向端28B及第二軸向端28C。第二軸向端28C在軸向方向D2上與第一軸向端28B相反。如圖6中所見，第二軸向端28C被定位成在軸向方向D2上比第一軸向端28B更接近自行車輪轂總成12的軸向中心平面CPL。鏈輪支撐體28還包含軸向接觸表面28D，其相對於旋轉中心軸線A1面向軸向方向D2，以供與自行車鏈輪裝置14接觸。軸向接觸表面28D被定位成在軸向方向D2上比第一軸向端28B更接近自行車輪轂總成12的軸向中心平面CPL。軸向接觸表面28D被定位，使得第一外部花鍵40在軸向方向D2上被設置於軸向接觸表面28D與第二外部花鍵42之間。軸向接觸表面28D在此實施例中被設置在較大直徑部分52上，但是，軸向接觸表面28D能根據需求而被設置在自行車輪轂總成12的其他部分。軸向接觸表面28D在自行車鏈輪裝置14被安裝於鏈輪支撐體28上之狀態下與自行車鏈輪裝置14接觸。更確切地，軸向接觸表面28D在自行車鏈輪裝置14被安裝於鏈輪支撐體28上之狀態下與鏈輪支撐構件38接觸。As seen in FIGS. 6 and 7, the sprocket support body 28 includes a first axial end 28B and a second axial end 28C. The second axial end 28C is opposite to the first axial end 28B in the axial direction D2. As seen in FIG. 6, the second axial end 28C is positioned closer to the axial center plane CPL of the bicycle hub assembly 12 in the axial direction D2 than the first axial end 28B. The sprocket support 28 further includes an axial contact surface 28D, which faces the axial direction D2 with respect to the rotation center axis A1 for contact with the bicycle sprocket device 14. The axial contact surface 28D is positioned closer to the axial center plane CPL of the bicycle hub assembly 12 in the axial direction D2 than the first axial end 28B. The axial contact surface 28D is positioned such that the first outer spline 40 is disposed between the axial contact surface 28D and the second outer spline 42 in the axial direction D2. The axial contact surface 28D is provided on the larger diameter portion 52 in this embodiment, but the axial contact surface 28D can be provided on other parts of the bicycle hub assembly 12 as required. The axial contact surface 28D is in contact with the bicycle sprocket device 14 in a state where the bicycle sprocket device 14 is mounted on the sprocket support body 28. More precisely, the axial contact surface 28D is in contact with the sprocket support member 38 in a state where the bicycle sprocket device 14 is mounted on the sprocket support 28.

如圖6及圖7中所見，鏈輪支撐體28還包含面向軸向方向D2的連接表面28E。連接表面28E在軸向方向D2上被設置於第一外部花鍵40與第二外部花鍵42之間。如圖6中所見，環件39在軸向方向D2上被設置於連接表面28E的周圍，且在軸向方向D2上被與連接表面28E隔開。然而，環件39能在自行車鏈輪裝置14被安裝在鏈輪支撐體28上之狀態下與鏈輪支撐構件38接觸。As seen in FIGS. 6 and 7, the sprocket support 28 also includes a connecting surface 28E facing the axial direction D2. The connecting surface 28E is provided between the first outer spline 40 and the second outer spline 42 in the axial direction D2. As seen in FIG. 6, the ring 39 is provided around the connecting surface 28E in the axial direction D2, and is spaced apart from the connecting surface 28E in the axial direction D2. However, the ring 39 can contact the sprocket support member 38 in a state where the bicycle sprocket device 14 is mounted on the sprocket support 28.

如圖16中所見，第一外部花鍵40具有沿著旋轉中心軸線A1所界定的第一軸向長度SL1。複數個第一外部花鍵齒48具有沿著旋轉中心軸線A1所界定的第一軸向長度SL1。第二外部花鍵42具有沿著旋轉中心軸線A1所界定的第二軸向長度SL2。複數個第二外部花鍵齒50具有沿著旋轉中心軸線A1所界定的第二軸向長度SL2。第二軸向長度SL2短於第一軸向長度SL1。較佳地，第二軸向長度SL2短於第一軸向長度SL1的一半。更佳地，第二軸向長度SL2長於3 mm。較佳地，第一軸向長度SL1等於或短於32 mm。第一軸向長度SL1等於或長於30 mm。在此實施例中，第一軸向長度SL1是31.3 mm。然後，第一軸向長度SL1不受限於此實施例及以上範圍。較佳地，第二軸向長度SL2等於或短於11 mm。第二軸向長度SL2等於或長於9 mm。在此實施例中，第二軸向長度SL2是9.9 mm。然而，第二軸向長度SL2不受限於此實施例及以上範圍。As seen in Fig. 16, the first outer spline 40 has a first axial length SL1 defined along the rotation center axis A1. The plurality of first outer spline teeth 48 have a first axial length SL1 defined along the rotation center axis A1. The second outer spline 42 has a second axial length SL2 defined along the rotation center axis A1. The plurality of second outer spline teeth 50 have a second axial length SL2 defined along the rotation center axis A1. The second axial length SL2 is shorter than the first axial length SL1. Preferably, the second axial length SL2 is shorter than half of the first axial length SL1. More preferably, the second axial length SL2 is longer than 3 mm. Preferably, the first axial length SL1 is equal to or shorter than 32 mm. The first axial length SL1 is equal to or longer than 30 mm. In this embodiment, the first axial length SL1 is 31.3 mm. Then, the first axial length SL1 is not limited to this embodiment and the above range. Preferably, the second axial length SL2 is equal to or shorter than 11 mm. The second axial length SL2 is equal to or longer than 9 mm. In this embodiment, the second axial length SL2 is 9.9 mm. However, the second axial length SL2 is not limited to this embodiment and the above range.

如圖17中所見，複數個第一外部花鍵齒48相對於自行車輪轂總成12的旋轉中心軸線A1被環周地配置。複數個第二外部花鍵齒50相對於自行車輪轂總成12的旋轉中心軸線A1被環周地配置。第一外部花鍵齒48的總數目等於或大於10，且第二外部花鍵齒50的總數目等於或大於10。較佳地，第一外部花鍵齒48的總數目等於或大於20，且第二外部花鍵齒50的總數目等於或大於20。較佳地，第一外部花鍵齒48的總數目等於或小於40，且第二外部花鍵齒50的總數目等於或小於40。較佳地，第一外部花鍵齒48的總數目等於或小於30，且第二外部花鍵齒50的總數目等於或小於30。在此實施例中，第一外部花鍵齒48的總數目是23，且第二外部花鍵齒50的總數目是23。然而，第一外部花鍵齒48的總數目及第二外部花鍵齒50的總數目不受限於此實施例及以上範圍。As seen in FIG. 17, the plurality of first outer spline teeth 48 are circumferentially arranged with respect to the rotation center axis A1 of the bicycle hub assembly 12. The plurality of second outer spline teeth 50 are circumferentially arranged with respect to the rotation center axis A1 of the bicycle hub assembly 12. The total number of first outer spline teeth 48 is equal to or greater than ten, and the total number of second outer spline teeth 50 is equal to or greater than ten. Preferably, the total number of first outer spline teeth 48 is equal to or greater than 20, and the total number of second outer spline teeth 50 is equal to or greater than 20. Preferably, the total number of first outer spline teeth 48 is equal to or less than 40, and the total number of second outer spline teeth 50 is equal to or less than 40. Preferably, the total number of first outer spline teeth 48 is equal to or less than 30, and the total number of second outer spline teeth 50 is equal to or less than 30. In this embodiment, the total number of first outer spline teeth 48 is 23, and the total number of second outer spline teeth 50 is 23. However, the total number of the first external spline teeth 48 and the total number of the second external spline teeth 50 are not limited to this embodiment and above.

如圖17中所見，第一外部花鍵40具有第一外部花鍵主要直徑DM11。第一外部花鍵主要直徑DM11由複數個第一外部花鍵齒48的複數個第一徑向外齒頂48t所界定。第二外部花鍵42具有第二外部花鍵主要直徑DM21。第二外部花鍵主要直徑DM21由複數個第二外部花鍵齒50的複數個第二徑向外齒頂50t所界定。第一外部花鍵40具有小於第一外部花鍵主要直徑DM11的第一外部花鍵次要直徑DM12。第一外部花鍵次要直徑DM12由複數個第一外部花鍵齒48的第一齒根圓RC1所界定。第一齒根圓RC1在沿著旋轉中心軸線A1觀看時與鏈輪支撐體28的第一外周圍44重合。亦即，第一外部花鍵次要直徑DM12等於第一外周圍44的第一外直徑OD1。第二外部花鍵42具有小於第二外部花鍵主要直徑DM21的第二外部花鍵次要直徑DM22。第二外部花鍵次要直徑DM22由複數個第二外部花鍵齒50的第二齒根圓RC2所界定。第二齒根圓RC2在沿著旋轉中心軸線A1觀看時與鏈輪支撐體28的第二外周圍46重合。亦即，第二外部花鍵次要直徑DM22等於第二外周圍46的第二外直徑OD2。As seen in Figure 17, the first outer spline 40 has a first outer spline major diameter DM11. The main diameter DM11 of the first outer spline is defined by the plurality of first radial outer tooth crests 48t of the plurality of first outer spline teeth 48. The second outer spline 42 has a second outer spline main diameter DM21. The main diameter DM21 of the second outer spline is defined by the plurality of second radial outer tooth crests 50t of the plurality of second outer spline teeth 50. The first outer spline 40 has a first outer spline minor diameter DM12 that is smaller than the first outer spline major diameter DM11. The first outer spline minor diameter DM12 is defined by the first root circle RC1 of the plurality of first outer spline teeth 48. The first root circle RC1 coincides with the first outer periphery 44 of the sprocket support body 28 when viewed along the rotation center axis A1. That is, the first outer spline secondary diameter DM12 is equal to the first outer diameter OD1 of the first outer periphery 44. The second outer spline 42 has a second outer spline minor diameter DM22 that is smaller than the second outer spline major diameter DM21. The second outer spline secondary diameter DM22 is defined by the second root circle RC2 of the plurality of second outer spline teeth 50. The second root circle RC2 coincides with the second outer circumference 46 of the sprocket support body 28 when viewed along the rotation center axis A1. That is, the second outer spline secondary diameter DM22 is equal to the second outer diameter OD2 of the second outer circumference 46.

在此實施例中，第二外部花鍵主要直徑DM21小於第一外部花鍵主要直徑DM11。第二外部花鍵主要直徑DM21小於30 mm。較佳地，第一外部花鍵次要直徑DM12大於第二外部花鍵主要直徑DM21。第一外部花鍵次要直徑DM12與第二外部花鍵主要直徑DM21之間的差異小於第一外部花鍵主要直徑DM11與第一外部花鍵次要直徑DM12之間的差異。第一外部花鍵次要直徑DM12與第二外部花鍵主要直徑DM21之間的差異小於第二外部花鍵主要直徑DM21與第二外部花鍵次要直徑DM22之間的差異。然而，第一外部花鍵次要直徑DM12能等於或小於第二外部花鍵主要直徑DM21。第一外部花鍵次要直徑DM12與第二外部花鍵主要直徑DM21之間的差異能等於或大於第一外部花鍵主要直徑DM11與第一外部花鍵次要直徑DM12之間的差異。第一外部花鍵次要直徑DM12與第二外部花鍵主要直徑DM21之間的差異能等於或大於第二外部花鍵主要直徑DM21與第二外部花鍵次要直徑DM22之間的差異。In this embodiment, the second outer spline main diameter DM21 is smaller than the first outer spline main diameter DM11. The main diameter DM21 of the second external spline is less than 30 mm. Preferably, the first outer spline minor diameter DM12 is larger than the second outer spline major diameter DM21. The difference between the first outer spline minor diameter DM12 and the second outer spline major diameter DM21 is smaller than the difference between the first outer spline major diameter DM11 and the first outer spline minor diameter DM12. The difference between the first outer spline minor diameter DM12 and the second outer spline major diameter DM21 is smaller than the difference between the second outer spline major diameter DM21 and the second outer spline minor diameter DM22. However, the first outer spline minor diameter DM12 can be equal to or smaller than the second outer spline major diameter DM21. The difference between the first outer spline minor diameter DM12 and the second outer spline major diameter DM21 can be equal to or greater than the difference between the first outer spline major diameter DM11 and the first outer spline minor diameter DM12. The difference between the first outer spline minor diameter DM12 and the second outer spline major diameter DM21 can be equal to or greater than the difference between the second outer spline major diameter DM21 and the second outer spline minor diameter DM22.

較佳地，第一外部花鍵主要直徑DM11等於或大於32 mm。第一外部花鍵主要直徑DM11等於或小於33 mm。在此實施例中，第一外部花鍵主要直徑DM11是32.6 mm。然而，第一外部花鍵主要直徑DM11不受限於此實施例及以上範圍。較佳地，第一外部花鍵次要直徑DM12等於或大於30 mm。第一外部花鍵次要直徑DM12等於或小於31 mm。在此實施例中，第一外部花鍵次要直徑DM12是30.2 mm。然而，第一外部花鍵次要直徑DM12不受限於此實施例及以上範圍。較佳地，第二外部花鍵主要直徑DM21等於或大於29 mm。第二外部花鍵主要直徑DM21等於或小於30 mm。在此實施例中，第二外部花鍵主要直徑DM21是29.6 mm。然而，第二外部花鍵主要直徑DM21不受限於此實施例及以上範圍。較佳地，第二外部花鍵次要直徑DM22等於或大於27 mm。第二外部花鍵次要直徑DM22等於或小於28 mm。在此實施例中，第二外部花鍵次要直徑DM22是27.2 mm。然而，第二外部花鍵次要直徑DM22不受限於此實施例及以上範圍。Preferably, the main diameter DM11 of the first external spline is equal to or greater than 32 mm. The main diameter DM11 of the first external spline is equal to or less than 33 mm. In this embodiment, the main diameter DM11 of the first outer spline is 32.6 mm. However, the main diameter DM11 of the first external spline is not limited to this embodiment and above. Preferably, the secondary diameter DM12 of the first external spline is equal to or greater than 30 mm. The minor diameter DM12 of the first external spline is equal to or less than 31 mm. In this embodiment, the first external spline secondary diameter DM12 is 30.2 mm. However, the first external spline secondary diameter DM12 is not limited to this embodiment and above. Preferably, the main diameter DM21 of the second external spline is equal to or greater than 29 mm. The main diameter DM21 of the second external spline is equal to or less than 30 mm. In this embodiment, the main diameter DM21 of the second external spline is 29.6 mm. However, the main diameter DM21 of the second external spline is not limited to this embodiment and above. Preferably, the secondary diameter DM22 of the second external spline is equal to or greater than 27 mm. The secondary diameter DM22 of the second external spline is equal to or less than 28 mm. In this embodiment, the secondary outer spline diameter DM22 is 27.2 mm. However, the second external spline secondary diameter DM22 is not limited to this embodiment and the above range.

如圖17中所見，第一外部花鍵齒48中的至少一者能具有與第一外部花鍵齒48中的另一者的第二花鍵形狀不同之第一花鍵形狀。第一外部花鍵齒48中的至少一者能具有與第一外部花鍵齒48中的另一者的第二花鍵尺寸不同之第一花鍵尺寸。第一外部花鍵齒48中的至少一者在沿著旋轉中心軸線A1觀看時具有與第一外部花鍵齒48中的另一者的輪廓不同之輪廓。在此實施例中，第一外部花鍵齒48X具有與第一外部花鍵齒48中的另一者的第二花鍵形狀不同之第一花鍵形狀。第一外部花鍵齒48X具有與第一外部花鍵齒48中的另一者的第二花鍵尺寸不同之第一花鍵尺寸。第一外部花鍵齒48X在沿著旋轉中心軸線A1觀看時具有與第一外部花鍵齒48中的另一者的輪廓不同之輪廓。然而，第一外部花鍵齒48能具有彼此相同的花鍵形狀。第一外部花鍵齒48能具有彼此相同的花鍵尺寸。第一外部花鍵齒48能具有彼此相同的輪廓。As seen in FIG. 17, at least one of the first outer spline teeth 48 can have a first spline shape that is different from the second spline shape of another one of the first outer spline teeth 48. At least one of the first outer spline teeth 48 can have a first spline size that is different from the second spline size of another one of the first outer spline teeth 48. At least one of the first outer spline teeth 48 has a contour different from that of the other one of the first outer spline teeth 48 when viewed along the rotation center axis A1. In this embodiment, the first outer spline teeth 48X have a first spline shape different from the second spline shape of the other of the first outer spline teeth 48. The first outer spline teeth 48X have a first spline size different from the second spline size of the other of the first outer spline teeth 48. The first outer spline tooth 48X has a contour different from the contour of the other of the first outer spline tooth 48 when viewed along the rotation center axis A1. However, the first outer spline teeth 48 can have the same spline shape as each other. The first outer spline teeth 48 can have the same spline size as each other. The first outer spline teeth 48 can have the same profile as each other.

類似地，第二外部花鍵齒50中的至少一者能具有與第二外部花鍵齒50中的另一者的第二花鍵形狀不同之第一花鍵形狀。第二外部花鍵齒50中的至少一者能具有與第二外部花鍵齒50中的另一者的第二花鍵尺寸不同之第一花鍵尺寸。第二外部花鍵齒50中的至少一者在沿著旋轉中心軸線A1觀看時具有與第二外部花鍵齒50中的另一者的輪廓不同之輪廓。在此實施例中，第二外部花鍵齒50X具有與第二外部花鍵齒50中的另一者的第二花鍵形狀不同之第一花鍵形狀。第二外部花鍵齒50X具有與第二外部花鍵齒50中的另一者的第二花鍵尺寸不同之第一花鍵尺寸。第二外部花鍵齒50X在沿著旋轉中心軸線A1觀看時具有與第二外部花鍵齒50中的另一者的輪廓不同之輪廓。然而，第二外部花鍵齒50能具有彼此相同的花鍵形狀。第二外部花鍵齒50能具有彼此相同的花鍵尺寸。第二外部花鍵齒50能具有彼此相同的輪廓。Similarly, at least one of the second outer spline teeth 50 can have a first spline shape that is different from the second spline shape of the other of the second outer spline teeth 50. At least one of the second outer spline teeth 50 can have a first spline size that is different from the second spline size of the other one of the second outer spline teeth 50. At least one of the second outer spline teeth 50 has a contour different from that of the other of the second outer spline teeth 50 when viewed along the rotation center axis A1. In this embodiment, the second outer spline teeth 50X have a first spline shape that is different from the second spline shape of the other of the second outer spline teeth 50. The second external spline teeth 50X have a first spline size different from the second spline size of the other of the second external spline teeth 50. The second outer spline tooth 50X has a contour different from the contour of the other of the second outer spline teeth 50 when viewed along the rotation center axis A1. However, the second outer spline teeth 50 can have the same spline shape as each other. The second outer spline teeth 50 can have the same spline size as each other. The second outer spline teeth 50 can have the same profile as each other.

如圖17中所見，第一外部花鍵40包括第一周節角(pitch angle)PA11，其由複數個第一外部花鍵齒48中的兩個鄰近的第一外部花鍵齒所界定。第二外部花鍵42包括第二周節角PA21，其由複數個第二外部花鍵齒50中的兩個鄰近的第二外部花鍵齒所界定。第一周節角PA11在於旋轉中心軸線A1上觀看時由藉由第一徑向線L11及另一個第一徑向線L11作成的角度所界定，第一徑向線L11從旋轉中心軸線A1延伸至複數個第一外部花鍵齒48中的兩個鄰近的第一外部花鍵齒中的一者的特定點(例如，驅動表面的徑向最外緣)，另一個第一徑向線L11從旋轉中心軸線A1延伸至複數個第一外部花鍵齒48中的兩個鄰近的第一外部花鍵齒中的另一者的特定點。第二周節角PA21在於旋轉中心軸線A1上觀看時由藉由第二徑向線L21及另一個第二徑向線L21作成的角度所界定，第二徑向線L21從旋轉中心軸線A1延伸至複數個第二外部花鍵齒50中的兩個鄰近的第二外部花鍵齒中的一者的特定點(例如，驅動表面的徑向最外緣)，另一個第二徑向線L21從旋轉中心軸線A1延伸至複數個第二外部花鍵齒50中的兩個鄰近的第二外部花鍵齒中的另一者的特定點。在所繪示的實施例中，第二周節角PA21等於第一周節角PA11。然而，第二周節角PA21能與第一周節角PA11不同。在圖10中，第二徑向線L21在沿著旋轉中心軸線A1觀看時與第一徑向線L11重疊。然而，第二徑向線L21能在環周方向D1上與第一徑向線L11偏位。As seen in FIG. 17, the first outer spline 40 includes a first pitch angle PA11 that is bounded by two adjacent first outer spline teeth of the plurality of first outer spline teeth 48. The second outer spline 42 includes a second circumferential pitch angle PA21 which is bounded by two adjacent second outer spline teeth of the plurality of second outer spline teeth 50. The first round pitch angle PA11 is defined by the angle formed by the first radial line L11 and another first radial line L11 when viewed on the rotation center axis A1, the first radial line L11 extending from the rotation center axis A1 To a specific point (for example, the radially outermost edge of the driving surface) of one of the two adjacent first outer spline teeth 48 among the plurality of first outer spline teeth 48, the other first radial line L11 It extends from the rotation center axis A1 to a specific point of the other of the two adjacent first outer spline teeth among the plurality of first outer spline teeth 48. The second circumferential pitch angle PA21 is defined by the angle formed by the second radial line L21 and another second radial line L21 when viewed on the rotation center axis A1, the second radial line L21 extending from the rotation center axis A1 To a specific point (for example, the radially outermost edge of the driving surface) of one of the two adjacent second outer spline teeth among the plurality of second outer spline teeth 50, the other second radial line L21 It extends from the rotation center axis A1 to a specific point of the other of the two adjacent second outer spline teeth among the plurality of second outer spline teeth 50. In the illustrated embodiment, the second circumferential pitch angle PA21 is equal to the first circumferential pitch angle PA11. However, the second-round pitch angle PA21 can be different from the first-round pitch angle PA11. In FIG. 10, the second radial line L21 overlaps the first radial line L11 when viewed along the rotation center axis A1. However, the second radial line L21 can be offset from the first radial line L11 in the circumferential direction D1.

此外，第一外部花鍵40包括第一附加周節角PA12，其由複數個第一外部花鍵齒48中的另外兩個鄰近的第一外部花鍵齒48X及48Y所界定。第一附加周節角PA12在於旋轉中心軸線A1上觀看時由藉由第一徑向線L11及另一個第一徑向線L11作成的角度所界定，第一徑向線L11從旋轉中心軸線A1延伸至第一外部花鍵齒48X的特定點(例如，驅動表面的徑向最外緣)，另一個第一徑向線L11從旋轉中心軸線A1延伸至第一外部花鍵齒48Y的特定點。由於第一外部花鍵齒48X的結構與第一外部花鍵齒48的另一者的結構不同，第一附加周節角PA12與第一周節角PA11不同。In addition, the first outer spline 40 includes a first additional circumferential pitch angle PA12, which is defined by the other two adjacent first outer spline teeth 48X and 48Y of the plurality of first outer spline teeth 48. The first additional pitch angle PA12 is defined by the angle formed by the first radial line L11 and another first radial line L11 when viewed on the rotation center axis A1. The first radial line L11 is from the rotation center axis A1 Extending to a specific point of the first outer spline tooth 48X (for example, the radially outermost edge of the driving surface), another first radial line L11 extends from the rotation center axis A1 to a specific point of the first outer spline tooth 48Y . Since the structure of the first outer spline teeth 48X is different from the structure of the other of the first outer spline teeth 48, the first additional peripheral pitch angle PA12 is different from the first peripheral pitch angle PA11.

此外，第二外部花鍵42包括第二附加周節角PA22，其由複數個第二外部花鍵齒50中的另外兩個鄰近的第二外部花鍵齒50X及50Y所界定。第二附加周節角PA22在於旋轉中心軸線A1上觀看時由藉由第二徑向線L21及另一個第二徑向線L21作成的角度所界定，第二徑向線L21從旋轉中心軸線A1延伸至第二外部花鍵齒50X的特定點(例如，驅動表面的徑向最外緣)，另一個第二徑向線L21從旋轉中心軸線A1延伸至第二外部花鍵齒50X的特定點。由於第二外部花鍵齒50X的結構與第二外部花鍵齒50的另一者的結構不同，第二附加周節角PA22與第二周節角PA21不同。在所繪示的實施例中，第二附加周節角PA22等於第一附加周節角PA12。然而，第二附加周節角PA22能與第一附加周節角PA12不同。In addition, the second outer spline 42 includes a second additional peripheral pitch angle PA22, which is defined by the other two adjacent second outer spline teeth 50X and 50Y of the plurality of second outer spline teeth 50. The second additional pitch angle PA22 is defined by the angle formed by the second radial line L21 and another second radial line L21 when viewed on the rotation center axis A1. The second radial line L21 is from the rotation center axis A1 Extending to a specific point of the second outer spline tooth 50X (for example, the radially outermost edge of the driving surface), another second radial line L21 extends from the rotation center axis A1 to a specific point of the second outer spline tooth 50X . Since the structure of the second outer spline tooth 50X is different from the structure of the other of the second outer spline tooth 50, the second additional circumferential pitch angle PA22 is different from the second circumferential pitch angle PA21. In the illustrated embodiment, the second additional circumferential pitch angle PA22 is equal to the first additional circumferential pitch angle PA12. However, the second additional pitch angle PA22 can be different from the first additional pitch angle PA12.

在圖10中，穿過第二外部花鍵齒50X的第二徑向線L21在從旋轉中心軸線A1觀看時與穿過第一外部花鍵齒48X的第一徑向線L11重疊。然而，穿過第二外部花鍵齒50X的第二徑向線L21能在環周方向D1上與穿過第一外部花鍵齒48X的第一徑向線L11偏位。此外，由於第一外部花鍵齒48X能具有與另一個第一外部花鍵齒48的結構相同之結構，第一附加周節角PA12能等於第一周節角PA11。類似地，由於第二外部花鍵齒50X能具有與另一個第二外部花鍵齒50的結構相同之結構，第二附加周節角PA22能等於第二周節角PA21。在此案例中，全部的第一周節角PA11及全部的第二周節角PA21能彼此相同。In FIG. 10, the second radial line L21 passing through the second outer spline tooth 50X overlaps with the first radial line L11 passing through the first outer spline tooth 48X when viewed from the rotation center axis A1. However, the second radial line L21 passing through the second outer spline tooth 50X can be offset from the first radial line L11 passing through the first outer spline tooth 48X in the circumferential direction D1. In addition, since the first outer spline tooth 48X can have the same structure as that of the other first outer spline tooth 48, the first additional circumferential pitch angle PA12 can be equal to the first circumferential pitch angle PA11. Similarly, since the second outer spline tooth 50X can have the same structure as that of the other second outer spline tooth 50, the second additional circumferential pitch angle PA22 can be equal to the second circumferential pitch angle PA21. In this case, all the first round pitch angles PA11 and all the second round pitch angles PA21 can be the same as each other.

由於鏈輪支撐體28具有上述結構，如圖13中所見，具有總數目少於或等於10的複數個鏈輪齒SP1B之鏈輪SP1能經由第二外部花鍵42而與鏈輪支撐體28接合。如圖13中所見，鏈輪SP1包括鏈輪體SP1A。複數個鏈輪齒SP1B相對於旋轉中心軸線A1從鏈輪體SP1A徑向向外地延伸。複數個內部花鍵齒SP1T相對於旋轉中心軸線A1從鏈輪體SP1A徑向向內地延伸。鏈輪體SP1A具有滾花(knurled)部分SP1S，以與鎖定構件32(例如，參圖6)以摩擦方式接合。滾花部分SP1S被設置在第一向外面向側SP1H上。在所繪示的實施例中，複數個鏈輪齒SP1B的總數目等於10。然而，複數個鏈輪齒SP1B的總數目不受限於此實施例及以上範圍。例如，複數個鏈輪齒SP1B的總數目等於7、8、9、或超過10。在此實施例中，鏈輪SP1的複數個內部花鍵齒SP1T界定最小直徑MD1，其實質地與鏈輪支撐體28的第二外部花鍵次要直徑DM22相同。Since the sprocket support 28 has the above structure, as seen in FIG. 13, the sprocket SP1 having a plurality of sprocket teeth SP1B with a total number less than or equal to 10 can be connected to the sprocket support 28 via the second external spline 42 Splice. As seen in FIG. 13, the sprocket SP1 includes a sprocket body SP1A. The plurality of sprocket teeth SP1B extends radially outward from the sprocket body SP1A with respect to the rotation center axis A1. The plurality of internal spline teeth SP1T extend radially inward from the sprocket body SP1A with respect to the rotation center axis A1. The sprocket body SP1A has a knurled portion SP1S to be frictionally engaged with the locking member 32 (for example, refer to FIG. 6). The knurled portion SP1S is provided on the first outward facing side SP1H. In the illustrated embodiment, the total number of the plurality of sprocket teeth SP1B is equal to 10. However, the total number of the plurality of sprocket teeth SP1B is not limited to this embodiment and above. For example, the total number of the plural sprocket teeth SP1B is equal to 7, 8, 9, or more than 10. In this embodiment, the plurality of internal spline teeth SP1T of the sprocket SP1 define the minimum diameter MD1, which is actually the same as the second external spline secondary diameter DM22 of the sprocket support 28.

如圖14及圖15中所見，由於鏈輪SP2及SP3中的每一者具有與鏈輪SP1的結構實質地相同之結構，鏈輪S1的以上說明能藉由將「SP1」替換為「SP2」或「SP3」而適用於鏈輪SP2及SP3中的每一者。因此，為了簡潔起見，它們將不會在此被詳細的描述。As seen in Figures 14 and 15, since each of the sprocket SP2 and SP3 has a structure that is substantially the same as that of the sprocket SP1, the above description of the sprocket S1 can be replaced by "SP1" with "SP2 "Or "SP3" and apply to each of the sprockets SP2 and SP3. Therefore, for the sake of brevity, they will not be described in detail here.

利用傳動系統10、自行車輪轂總成12、及鏈輪支撐體28，鏈輪支撐體28具有第二外部花鍵42，第二外部花鍵42具有小於第一外部花鍵主要直徑DM11且小於30 mm的第二外部花鍵主要直徑DM21。因此，有可能將具有例如少於或等於10個齒之徑向小的鏈輪(例如，SP1)安裝在第二外部花鍵42上，且將相較於徑向小的鏈輪(例如，SP1)之徑向較大的鏈輪(例如，SP4)安裝在第一外部花鍵40上。Utilizing the transmission system 10, the bicycle hub assembly 12, and the sprocket support 28, the sprocket support 28 has a second external spline 42, which has a major diameter DM11 smaller than the first external spline and less than 30 The main diameter of the second external spline is DM21. Therefore, it is possible to mount a radially small sprocket having, for example, less than or equal to 10 teeth (for example, SP1) on the second outer spline 42, and compare the radially small sprocket (for example, The sprocket (for example, SP4) with a larger radial direction of SP1) is mounted on the first outer spline 40.

如圖18中所見，鏈輪支撐體28能在第一外部花鍵40與第二外部花鍵42之間包括溝槽28G。As seen in FIG. 18, the sprocket support body 28 can include a groove 28G between the first outer spline 40 and the second outer spline 42.

在此所使用的用語「可拆卸及/或可附接的」涵蓋一元件可在不具有實質損壞的情形下從另一元件反覆地拆卸且可附接於另一元件之組態。相反地，在此所使用的用語「不可拆卸的」涵蓋在一元件被從另一元件拆卸時發生實質損壞之組態。The term "detachable and/or attachable" as used herein covers a configuration in which one element can be repeatedly detached from another element without substantial damage and can be attached to another element. On the contrary, the term "non-detachable" as used herein covers a configuration in which a component is substantially damaged when it is removed from another component.

對於熟習自行車領域技術者從本揭示將會明白的是，以上實施例的結構及/或組態能彼此至少部分地組合。Those skilled in the bicycle field will understand from this disclosure that the structures and/or configurations of the above embodiments can be at least partially combined with each other.

在此所使用的用語「包含」及其衍生字旨在作為界定所述特徵、元件、組件、群組、整數、及/或步驟的出現之開放式用語，但未排除其他未陳述的特徵、元件、組件、群組、整數、及/或步驟的出現。此概念亦應用於具有類似意義的字，例如用語「具有」、「包括」及其衍生字。The term "including" and its derivatives used here are intended as open-ended terms that define the occurrence of the described features, elements, components, groups, integers, and/or steps, but does not exclude other unstated features, The occurrence of elements, components, groups, integers, and/or steps. This concept also applies to words with similar meanings, such as the terms "have", "include" and their derivatives.

用語「構件」、「區段」、「部」、「部分」、「元件」、「體」及「結構」在以單數型使用時能具有單一個部件或複數個部件的雙重意義。The terms "component", "section", "part", "part", "component", "body" and "structure" can have the dual meaning of a single part or plural parts when used in a singular form.

像是本申請案中所記載的「第一」及「第二」的序數用語僅為辨別用語，但不具有例如特定順序等的任何其他意義。此外，例如，用語「第一元件」本身不影射「第二元件」的存在，且用語「第二元件」本身不影射「第一元件」的存在。The ordinal terms such as "first" and "second" described in this application are merely distinguishing terms, but do not have any other meaning such as a specific order. In addition, for example, the term "first element" itself does not imply the existence of "second element", and the term "second element" does not imply the existence of "first element" by itself.

在此所使用的用語「一對」除了能涵蓋此對元件具有彼此相同形狀或結構之組態，還能涵蓋此對元件具有彼此不同形狀或結構之組態。The term "a pair" used herein can not only cover configurations in which the pair of elements have the same shape or structure, but can also cover configurations in which the pair of elements have different shapes or structures from each other.

在此揭示中所使用的詞語「中的至少一者」意指「一個或更多個」的所想要的選擇。針對一個範例，如果其選擇的數目是兩個，在此揭示中所使用的詞語「中的至少一者」意指「僅單一個選擇」或「兩個選擇中的兩者」。針對其他範例，如果其選擇的數目等於或大於三個，在此揭示中所使用的詞語「中的至少一者」意指「僅單一個選擇」或「等於或大於兩個選擇的任何組合」。例如，詞語「A及B中的至少一者」涵蓋(1)單獨A、(2)單獨B、及(3)A及B兩者。詞語「A、B、及C中的至少一者」涵蓋(1)單獨A、(2)單獨B、(3)單獨C、(4)A及B兩者、(5)B及C兩者、(6)A及C兩者、及(7)A、B、及C全部。換言之，詞語「A及B中的至少一者」在此揭示中並非意指「A中的至少一者及B中的至少一者」。The term "at least one of" used in this disclosure means the desired choice of "one or more". For an example, if the number of choices is two, the term "at least one of" used in this disclosure means "only one choice" or "both of two choices". For other examples, if the number of choices is equal to or greater than three, the term "at least one of" used in this disclosure means "only one choice" or "any combination equal to or greater than two choices" . For example, the term "at least one of A and B" encompasses (1) A alone, (2) B alone, and (3) both A and B. The term "at least one of A, B, and C" covers (1) A alone, (2) B alone, (3) C alone, (4) both A and B, (5) both B and C , (6) Both A and C, and (7) All A, B, and C. In other words, the term "at least one of A and B" does not mean "at least one of A and at least one of B" in this disclosure.

最後，在此所使用的像是「實質地」、「大約」及「近似地」的程度用語意指所修飾用語的合理變異量，使得最終結果不會顯著地改變。Finally, the terms such as "substantially", "approximately" and "approximately" used here mean a reasonable amount of variation of the modified terms so that the final result will not change significantly.

明顯地，鑑於以上教示，本發明的許多修改及變型是可能的。因此，要了解的是，在隨附申請專利範圍的範圍內，本發明可用在此所確切描述以外的方式來實施。Obviously, in view of the above teachings, many modifications and variations of the present invention are possible. Therefore, it should be understood that, within the scope of the attached patent application, the present invention can be implemented in a manner other than exactly described herein.

10:傳動系統 12:自行車輪轂總成 14:自行車鏈輪裝置 16:自行車制動器轉子 18:曲柄總成 20:自行車鏈條 22:曲柄軸 24:右曲柄臂 26:左曲柄臂 27:前鏈輪 28:鏈輪支撐體 28A:母螺紋部 28B:第一軸向端 28C:第二軸向端 28D:軸向接觸表面 28E:連接表面 28G:溝槽 30:輪轂軸 30A:軸通孔 30B:第一軸端 30C:第二軸端 30X:軸管 30Y:第一軸部分 30Z:第二軸部分 32:鎖定構件 32A:管狀部分 32A1:內周圍表面 32B:公螺紋部 32C:徑向凸部 32D:第一軸向端 32E:第二軸向端 32F:工具接合部 32G:接合溝槽 34:制動器轉子支撐體 36:輪轂體 38:鏈輪支撐構件 39:環件 40:第一外部花鍵 41:底座支撐部 42:第二外部花鍵 43:管狀體 43A:第一管狀部分 43B:第二管狀部分 44:第一外周圍 46:第二外周圍 48:第一外部花鍵齒 48t:第一徑向外齒頂 48X:第一外部花鍵齒 48Y:第一外部花鍵齒 50:第二外部花鍵齒 50t:第二徑向外齒頂 50X:第二外部花鍵齒 50Y:第二外部花鍵齒 51:內部花鍵齒 52:較大直徑部分 54:凸緣 56:螺旋外部花鍵齒 A1:旋轉中心軸線 AM:附接構件 BF:自行車車架 BF1:第一車架 BF11:第一凹部 BF2:第二車架 BF21:第二凹部 CPL:軸向中心平面 D1:環周方向 D11:驅動旋轉方向 D12:反向旋轉方向 D2:軸向方向 DM11:第一外部花鍵主要直徑 DM12:第一外部花鍵次要直徑 DM21:第二外部花鍵主要直徑 DM22:第二外部花鍵次要直徑 F1:驅動旋轉力 L11:第一徑向線 L21:第二徑向線 MD1:最小直徑 OD1:第一外直徑 OD2:第二外直徑 PA11:第一周節角 PA12:第一附加周節角 PA21:第二周節角 PA22:第二附加周節角 RC1:第一齒根圓 RC2:第二齒根圓 SL1:第一軸向長度 SL2:第二軸向長度 SP1:鏈輪 SP1A:鏈輪體 SP1B:鏈輪齒 SP1G:第一向內面向側 SP1H:第一向外面向側 SP1S:滾花部分 SP1T:內部花鍵齒 SP2:鏈輪 SP2B:鏈輪齒 SP2T:內部花鍵齒 SP3:鏈輪 SP3B:鏈輪齒 SP3T:內部花鍵齒 SP4:鏈輪 SP4T:內部花鍵齒 SP5:鏈輪 SP6:鏈輪 SP7:鏈輪 SP8:鏈輪 SP9:鏈輪 SP10:鏈輪 SP11:鏈輪 SP12:鏈輪 SPA1:間隔件 SPA2:間隔件 WS:車輪固定結構 WS1:固定桿 III:線 IX:線 X:線 XI:線10: Transmission system 12: Bicycle wheel assembly 14: Bicycle sprocket device 16: Bicycle brake rotor 18: crank assembly 20: Bicycle chain 22: crankshaft 24: Right crank arm 26: Left crank arm 27: front sprocket 28: Sprocket support 28A: Female thread 28B: first axial end 28C: second axial end 28D: Axial contact surface 28E: connecting surface 28G: groove 30: Hub axle 30A: Shaft through hole 30B: First shaft end 30C: second shaft end 30X: Shaft tube 30Y: the first axis part 30Z: The second shaft part 32: Locking member 32A: Tubular section 32A1: inner peripheral surface 32B: Male thread 32C: Radial convex 32D: first axial end 32E: second axial end 32F: Tool joint 32G: Joint groove 34: Brake rotor support 36: Hub body 38: Sprocket support member 39: Ring 40: First external spline 41: base support 42: second external spline 43: tubular body 43A: The first tubular part 43B: second tubular part 44: The first outer periphery 46: Second outer periphery 48: First external spline tooth 48t: the first radial outer tooth tip 48X: 1st external spline tooth 48Y: First external spline tooth 50: Second external spline tooth 50t: second radial outer tooth tip 50X: 2nd external spline tooth 50Y: 2nd external spline tooth 51: Internal spline tooth 52: Larger diameter part 54: flange 56: Spiral external spline tooth A1: Rotation center axis AM: attachment member BF: Bicycle frame BF1: The first frame BF11: The first recess BF2: Second frame BF21: Second recess CPL: axial center plane D1: Circumferential direction D11: Drive rotation direction D12: Reverse rotation direction D2: axial direction DM11: The main diameter of the first external spline DM12: Secondary diameter of the first external spline DM21: The main diameter of the second external spline DM22: Secondary external spline secondary diameter F1: Drive rotation force L11: First radial line L21: Second radial line MD1: Minimum diameter OD1: first outer diameter OD2: second outer diameter PA11: first week corner PA12: The first additional week corner PA21: Second week corner PA22: Second additional weekly corner RC1: First tooth root circle RC2: Second tooth root circle SL1: first axial length SL2: second axial length SP1: Sprocket SP1A: Sprocket body SP1B: Sprocket SP1G: First inward facing side SP1H: First outward facing side SP1S: Knurled part SP1T: Internal spline tooth SP2: Sprocket SP2B: Sprocket SP2T: Internal spline tooth SP3: Sprocket SP3B: Sprocket SP3T: Internal spline tooth SP4: Sprocket SP4T: Internal spline tooth SP5: Sprocket SP6: Sprocket SP7: Sprocket SP8: Sprocket SP9: Sprocket SP10: Sprocket SP11: Sprocket SP12: Sprocket SPA1: Spacer SPA2: Spacer WS: Wheel fixing structure WS1: fixed rod III: Line IX: line X: line XI: Line

隨著本發明的更完整知曉及其許多伴隨優點藉由參照以下詳細說明並結合隨附圖式來考量的而變得被更佳地瞭解，本發明的更完整知曉及其許多伴隨優點將會被容易地獲得。With the more complete knowledge of the present invention and many of its accompanying advantages, the more complete knowledge of the present invention and its many accompanying advantages will become better understood by referring to the following detailed description in conjunction with the accompanying drawings. Is easily obtained.

[圖1]是根據一個實施例的傳動系統的示意圖。[Fig. 1] is a schematic diagram of a transmission system according to an embodiment.

[圖2]是圖1中所繪示的傳動系統的分解立體圖。[Fig. 2] is an exploded perspective view of the transmission system shown in Fig. 1. [Fig.

[圖3]是沿著圖2的線III-III所取的傳動系統的剖面圖。[Fig. 3] is a sectional view of the transmission system taken along the line III-III of Fig. 2. [Fig.

[圖4]是圖2中所繪示的傳動系統的自行車輪轂總成的立體圖，其具有自行車鏈輪裝置的鎖定構件[Fig. 4] is a perspective view of the bicycle hub assembly of the transmission system shown in Fig. 2, which has the locking member of the bicycle sprocket device

[圖5]是圖1中所繪示的傳動系統的自行車鏈輪裝置的側視圖。[Fig. 5] is a side view of the bicycle sprocket device of the transmission system shown in Fig. 1. [Fig.

[圖6]是圖4中所繪示的傳動系統的放大剖面圖。[Figure 6] is an enlarged cross-sectional view of the transmission system depicted in Figure 4;

[圖7]是圖4中所繪示的自行車輪轂總成的鏈輪支撐體的立體圖。[Fig. 7] is a perspective view of the sprocket support body of the bicycle hub assembly shown in Fig. 4. [Fig.

[圖8]是圖4中所繪示的自行車輪轂總成的鏈輪支撐體的另一個立體圖。[Fig. 8] is another perspective view of the sprocket support body of the bicycle hub assembly shown in Fig. 4. [Fig.

[圖9]是沿著圖4的線IX-IX所取的鏈輪支撐體的剖面圖。[Fig. 9] is a cross-sectional view of the sprocket support taken along line IX-IX of Fig. 4.

[圖10]是沿著圖9的線X-X所取的鏈輪支撐體的剖面圖。[Fig. 10] is a cross-sectional view of the sprocket support taken along line X-X in Fig. 9.

[圖11]是沿著圖9的線XI-XI所取的鏈輪支撐體的剖面圖。[Fig. 11] is a cross-sectional view of the sprocket supporting body taken along the line XI-XI of Fig. 9. [Fig.

[圖12]是圖5中所繪示的自行車鏈輪裝置的鏈輪的側視圖，其具有鏈輪支撐體的剖面。[Fig. 12] is a side view of the sprocket of the bicycle sprocket device shown in Fig. 5, which has a cross-section of the sprocket support.

[圖13]是圖5中所繪示的自行車鏈輪裝置的另一個鏈輪的側視圖，其具有鏈輪支撐體的剖面。[Fig. 13] is a side view of another sprocket of the bicycle sprocket device shown in Fig. 5, which has a cross-section of the sprocket support.

[圖14]是圖5中所繪示的自行車鏈輪裝置的另一個鏈輪的側視圖，其具有鏈輪支撐體的剖面。Fig. 14 is a side view of another sprocket of the bicycle sprocket device shown in Fig. 5, which has a cross section of the sprocket support.

[圖15]是圖5中所繪示的自行車鏈輪裝置的另一個鏈輪的側視圖，其具有鏈輪支撐體的剖面。Fig. 15 is a side view of another sprocket of the bicycle sprocket device shown in Fig. 5, which has a cross-section of the sprocket support.

[圖16]是圖4中所繪示的自行車輪轂總成的鏈輪支撐體的後視圖。[Fig. 16] is a rear view of the sprocket support body of the bicycle hub assembly shown in Fig. 4.

[圖17]是圖4中所繪示的自行車輪轂總成的鏈輪支撐體的側視圖。[Fig. 17] is a side view of the sprocket support body of the bicycle hub assembly shown in Fig. 4.

[圖18]是根據一個修改的鏈輪支撐體的剖面圖。[Figure 18] is a sectional view of a sprocket support body according to a modification.

12:自行車輪轂總成 12: Bicycle wheel assembly

14:自行車鏈輪裝置 14: Bicycle sprocket device

20:自行車鏈條 20: Bicycle chain

28:鏈輪支撐體 28: Sprocket support

30:輪轂軸 30: Hub axle

32:鎖定構件 32: Locking member

36:輪轂體 36: Hub body

38:鏈輪支撐構件 38: Sprocket support member

51:內部花鍵齒 51: Internal spline tooth

A1:旋轉中心軸線 A1: Rotation center axis

D1:環周方向 D1: Circumferential direction

D2:軸向方向 D2: axial direction

D11:驅動旋轉方向 D11: Drive rotation direction

D12:反向旋轉方向 D12: Reverse rotation direction

F1:驅動旋轉力 F1: Drive rotation force

SP8:鏈輪 SP8: Sprocket

SP9:鏈輪 SP9: Sprocket

SP10:鏈輪 SP10: Sprocket

SP11:鏈輪 SP11: Sprocket

SP12:鏈輪 SP12: Sprocket

Claims (19)

一種用於自行車輪轂總成的鏈輪支撐體，包含： 第一外部花鍵，其具有第一外部花鍵主要直徑；及 第二外部花鍵，其具有小於該第一外部花鍵主要直徑的第二外部花鍵主要直徑，該第二外部花鍵主要直徑小於30 mm，該第二外部花鍵不可從該第一外部花鍵拆卸。A sprocket support body for bicycle hub assembly, comprising: A first outer spline having a major diameter of the first outer spline; and A second external spline having a major diameter of a second external spline smaller than the major diameter of the first external spline, the major diameter of the second external spline being less than 30 mm, and the second external spline cannot be removed from the first external Spline removal. 如請求項1所述之用於自行車輪轂總成的鏈輪支撐體，其中 該第二外部花鍵沿著該鏈輪支撐體的旋轉中心軸線與該第一外部花鍵偏位。The sprocket support body for a bicycle hub assembly as described in claim 1, wherein The second external spline is offset from the first external spline along the rotation center axis of the sprocket support body. 如請求項2所述之用於自行車輪轂總成的鏈輪支撐體，其中 該第一外部花鍵具有沿著該旋轉中心軸線所界定的第一軸向長度， 該第二外部花鍵具有沿著該旋轉中心軸線所界定的第二軸向長度，且 該第二軸向長度短於該第一軸向長度。The sprocket support body for a bicycle hub assembly as described in claim 2, wherein The first outer spline has a first axial length defined along the rotation center axis, The second external spline has a second axial length defined along the rotation center axis, and The second axial length is shorter than the first axial length. 如請求項3所述之用於自行車輪轂總成的鏈輪支撐體，其中 該第二軸向長度短於該第一軸向長度的一半。The sprocket support body for bicycle hub assembly as described in claim 3, wherein The second axial length is shorter than half of the first axial length. 如請求項3或4所述之用於自行車輪轂總成的鏈輪支撐體，其中 該第二軸向長度長於3 mm。The sprocket supporting body for a bicycle hub assembly as described in claim 3 or 4, wherein The second axial length is longer than 3 mm. 如請求項1至4中任一項所述之用於自行車輪轂總成的鏈輪支撐體，其中 該第一外部花鍵具有小於該第一外部花鍵主要直徑且大於該第二外部花鍵主要直徑的第一外部花鍵次要直徑。The sprocket support body for a bicycle hub assembly according to any one of claims 1 to 4, wherein The first outer spline has a first outer spline minor diameter that is smaller than the first outer spline major diameter and larger than the second outer spline major diameter. 如請求項6所述之用於自行車輪轂總成的鏈輪支撐體，其中 該第一外部花鍵次要直徑與該第二外部花鍵主要直徑之間的差異小於該第一外部花鍵主要直徑與該第一外部花鍵次要直徑之間的差異。The sprocket support body for a bicycle hub assembly as described in claim 6, wherein The difference between the primary diameter of the first external spline and the primary diameter of the second external spline is smaller than the difference between the primary diameter of the first external spline and the secondary diameter of the first external spline. 如請求項6所述之用於自行車輪轂總成的鏈輪支撐體，其中 該第二外部花鍵具有小於該第二外部花鍵主要直徑的第二外部花鍵次要直徑，且 該第一外部花鍵次要直徑與該第二外部花鍵主要直徑之間的差異小於該第二外部花鍵主要直徑與該第二外部花鍵次要直徑之間的差異。The sprocket support body for a bicycle hub assembly as described in claim 6, wherein The second outer spline has a second outer spline minor diameter smaller than the second outer spline major diameter, and The difference between the primary diameter of the first external spline and the primary diameter of the second external spline is smaller than the difference between the primary diameter of the second external spline and the secondary diameter of the second external spline. 如請求項1至4中任一項所述之用於自行車輪轂總成的鏈輪支撐體，其中 該第一外部花鍵具有複數個第一外部花鍵齒， 該第一外部花鍵主要直徑由該複數個第一外部花鍵齒的複數個第一徑向外齒頂所界定， 該第二外部花鍵具有複數個第二外部花鍵齒，且 該第二外部花鍵主要直徑由該複數個第二外部花鍵齒的複數個第二徑向外齒頂所界定。The sprocket support body for a bicycle hub assembly according to any one of claims 1 to 4, wherein The first external spline has a plurality of first external spline teeth, The main diameter of the first outer spline is defined by a plurality of first radial outer tooth crests of the plurality of first outer spline teeth, The second external spline has a plurality of second external spline teeth, and The main diameter of the second outer spline is defined by a plurality of second radial outer tooth crests of the plurality of second outer spline teeth. 如請求項9所述之用於自行車輪轂總成的鏈輪支撐體，其中 該第一外部花鍵次要直徑由該複數個第一外部花鍵齒的第一齒根圓所界定，且 該第二外部花鍵次要直徑由該複數個第二外部花鍵齒的第二齒根圓所界定。The sprocket support body for a bicycle hub assembly as described in claim 9, wherein The secondary diameter of the first outer spline is defined by the first root circle of the plurality of first outer spline teeth, and The secondary diameter of the second external spline is defined by the second root circle of the plurality of second external spline teeth. 如請求項9所述之用於自行車輪轂總成的鏈輪支撐體，其中 該第一外部花鍵包括： 第一周節角，其由該複數個第一外部花鍵齒中的兩個鄰近的第一外部花鍵齒所界定；及 第一附加周節角，其由該複數個第一外部花鍵齒中的另外兩個鄰近的第一外部花鍵齒所界定，該第一附加周節角與該第一周節角不同。The sprocket support body for a bicycle hub assembly as described in claim 9, wherein The first external spline includes: The first round pitch angle, which is defined by two adjacent first outer spline teeth of the plurality of first outer spline teeth; and The first additional circumferential pitch angle is defined by the other two adjacent first outer spline teeth among the plurality of first outer spline teeth, and the first additional circumferential pitch angle is different from the first circumferential pitch angle. 如請求項9所述之用於自行車輪轂總成的鏈輪支撐體，其中 該第二外部花鍵包括： 第二周節角，其由該複數個第二外部花鍵齒中的兩個鄰近的第二外部花鍵齒所界定；及 第二附加周節角，其由該複數個第二外部花鍵齒中的另外兩個鄰近的第二外部花鍵齒所界定，該第二附加周節角與該第二周節角不同。The sprocket support body for a bicycle hub assembly as described in claim 9, wherein The second external spline includes: The second circumferential pitch angle, which is defined by two adjacent second outer spline teeth of the plurality of second outer spline teeth; and The second additional circumferential pitch angle is defined by the other two adjacent second outer spline teeth among the plurality of second outer spline teeth, and the second additional circumferential pitch angle is different from the second circumferential pitch angle. 如請求項9所述之用於自行車輪轂總成的鏈輪支撐體，其中 該第一外部花鍵包括第一周節角，該第一周節角由該複數個第一外部花鍵齒中的兩個鄰近的第一外部花鍵齒所界定， 該第二外部花鍵包括第二周節角，該第二周節角由該複數個第二外部花鍵齒中的兩個鄰近的第二外部花鍵齒所界定，且 該第二周節角等於該第一周節角。The sprocket support body for a bicycle hub assembly as described in claim 9, wherein The first outer spline includes a first circumferential pitch angle defined by two adjacent first outer spline teeth among the plurality of first outer spline teeth, The second external spline includes a second circumferential pitch angle defined by two adjacent second external spline teeth of the plurality of second external spline teeth, and The second pitch angle is equal to the first pitch angle. 如請求項13所述之用於自行車輪轂總成的鏈輪支撐體，其中 該第一外部花鍵包括第一附加周節角，該第一附加周節角由該複數個第一外部花鍵齒中的另外兩個鄰近的第一外部花鍵齒所界定，該第一附加周節角與該第一周節角不同， 該第二外部花鍵包括第二附加周節角，該第二附加周節角由該複數個第二外部花鍵齒中的另外兩個鄰近的第二外部花鍵齒所界定，該第二附加周節角與該第二周節角不同，且 該第二附加周節角等於該第一附加周節角。The sprocket support body for a bicycle hub assembly as described in claim 13, wherein The first outer spline includes a first additional peripheral pitch angle, the first additional peripheral pitch angle is defined by the other two adjacent first outer spline teeth of the plurality of first outer spline teeth, the first The additional pitch angle is different from the first pitch angle, The second external spline includes a second additional peripheral pitch angle defined by the other two adjacent second external spline teeth among the plurality of second external spline teeth, the second The additional pitch angle is different from the second pitch angle, and The second additional pitch angle is equal to the first additional pitch angle. 如請求項1至4中任一項所述之用於自行車輪轂總成的鏈輪支撐體，還包含： 軸向接觸表面，其相對於該旋轉中心軸線面向軸向方向，以供與自行車鏈輪裝置接觸，其中 該第一外部花鍵在該軸向方向上被設置於該軸向接觸表面與該第二外部花鍵之間。The sprocket support body for a bicycle hub assembly as described in any one of claims 1 to 4, further comprising: The axial contact surface, which faces the axial direction with respect to the rotation center axis, for contacting the bicycle sprocket device, wherein The first outer spline is arranged between the axial contact surface and the second outer spline in the axial direction. 如請求項1至4中任一項所述之用於自行車輪轂總成的鏈輪支撐體，還包含： 第一外周圍，其具有第一外直徑；及 第二外周圍，其具有小於該第一外直徑的第二外直徑，其中 該第一外部花鍵被設置在該第一外周圍上，且 該第二外部花鍵被設置在該第二外周圍上。The sprocket support body for a bicycle hub assembly as described in any one of claims 1 to 4, further comprising: A first outer circumference, which has a first outer diameter; and A second outer periphery having a second outer diameter smaller than the first outer diameter, wherein The first outer spline is arranged on the first outer periphery, and The second outer spline is provided on the second outer periphery. 一種自行車輪轂總成，包含： 輪轂軸； 輪轂體，其被繞著該自行車輪轂總成的旋轉中心軸線可旋轉地安裝在該輪轂軸上；及 如請求項1至16中任一項所述的鏈輪支撐體，該鏈輪支撐體被繞著該旋轉中心軸線可旋轉地安裝在該輪轂軸上。A bicycle hub assembly, including: Hub axle A hub body, which is rotatably mounted on the hub axle around the rotation center axis of the bicycle hub assembly; and The sprocket support according to any one of claims 1 to 16, wherein the sprocket support is rotatably mounted on the hub shaft about the rotation center axis. 一種傳動系統，包含： 如請求項17所述的自行車輪轂總成；及 自行車鏈輪裝置，其包括鏈輪，該鏈輪被建構成與該自行車輪轂總成的該鏈輪支撐體的該第二外部花鍵接合，該鏈輪具有複數個鏈輪齒，該複數個鏈輪齒的總數目少於或等於10。A transmission system including: The bicycle hub assembly as described in claim 17; and A bicycle sprocket device, which includes a sprocket configured to be engaged with the second external spline of the sprocket support of the bicycle hub assembly, the sprocket having a plurality of sprocket teeth, the plurality of sprocket teeth The total number of sprocket teeth is less than or equal to 10. 如請求項18所述之傳動系統，其中 該自行車鏈輪裝置的至少三個鏈輪被建構成與該自行車輪轂總成的該鏈輪支撐體的該第二外部花鍵接合。The transmission system according to claim 18, wherein At least three sprockets of the bicycle sprocket device are constructed to engage with the second outer spline of the sprocket support of the bicycle hub assembly.
TW109109116A 2019-03-20 2020-03-19 Sprocket support body, bicycle hub assembly, and drive train TW202035184A (en)

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US7044876B2 (en) * 2003-01-17 2006-05-16 Shimano, Inc. Bicycle sprocket having lateral protrusions for use in a multiple sprocket assembly
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