TW201801990A - A multiple bicycle sprocket assembly - Google Patents

A multiple bicycle sprocket assembly Download PDF

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Publication number
TW201801990A
TW201801990A TW106120495A TW106120495A TW201801990A TW 201801990 A TW201801990 A TW 201801990A TW 106120495 A TW106120495 A TW 106120495A TW 106120495 A TW106120495 A TW 106120495A TW 201801990 A TW201801990 A TW 201801990A
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Taiwan
Prior art keywords
sprocket
mounting portion
bicycle
support member
assembly
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TW106120495A
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Chinese (zh)
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TWI706892B (en
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蒲田建二
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
    • B62M9/121—Rear derailleurs

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

Abstract

The multiple bicycle sprocket assembly includes a sprocket supporting member 40 and a first sprocket 51. The sprocket supporting member 40 is made of a single metallic plate. The sprocket supporting member 40 includes a first sprocket mounting portion 42, a second sprocket mounting portion 43 and a first connecting portion 46. The second sprocket mounting portion 43 is spaced apart from the first sprocket mounting portion 42 in an axial direction. The first connecting portion 46 interconnects the first sprocket mounting portion 42 and the second sprocket mounting portion 43. The first sprocket 51 is a separate member from the sprocket supporting member 40. The first sprocket body 51a is coupled to one of both axial sides of the first sprocket mounting portion 42.

Description

多重自行車鏈輪總成Multiple bicycle sprocket assembly

本文中所揭示之技術係關於一多重自行車鏈輪總成。The technique disclosed herein relates to a multiple bicycle sprocket assembly.

EP 1407962中揭示一習用多重後鏈輪總成。習用多重後鏈輪總成包含複數個鏈輪支撐部件及複數個後鏈輪。 該複數個鏈輪支撐部件支撐該複數個後鏈輪。該複數個鏈輪支撐部件沿軸向方向按次序並排地配置。此外，該複數個鏈輪支撐部件中之每一者安裝至一後輪轂總成且與後輪轂總成之一後輪轂外殼及一鏈輪安裝部件整體地旋轉。換言之，該複數個後鏈輪經由鏈輪支撐部件與後輪轂外殼及鏈輪安裝部件整體地旋轉。 在諸如上文之多重鏈輪總成等構形中，由於後鏈輪之數目近來往往會增加，因此鏈輪安裝部件之數目亦增加。因此，多重鏈輪總成之重量及其零件之數目增加。因此，需要減小多重鏈輪總成之重量且提高多重鏈輪總成之生產效率。 考慮到該問題，本發明之一目標係提供能夠減小重量且提高生產效率之一多重鏈輪總成。A conventional multiple rear sprocket assembly is disclosed in EP 1407962. The conventional multiple sprocket assembly includes a plurality of sprocket support members and a plurality of rear sprocket wheels. The plurality of sprocket support members support the plurality of rear sprockets. The plurality of sprocket support members are arranged side by side in the axial direction in order. Additionally, each of the plurality of sprocket support members is mounted to a rear hub assembly and integrally rotates with a rear hub housing and a sprocket mounting member of the rear hub assembly. In other words, the plurality of rear sprockets rotate integrally with the rear hub shell and the sprocket mounting member via the sprocket support members. In configurations such as the multiple sprocket assembly described above, since the number of rear sprockets tends to increase recently, the number of sprocket mounting members also increases. Therefore, the weight of the multiple sprocket assembly and the number of its parts increase. Therefore, it is necessary to reduce the weight of the multiple sprocket assembly and increase the production efficiency of the multiple sprocket assembly. In view of this problem, an object of the present invention is to provide a multiple sprocket assembly capable of reducing weight and improving production efficiency.

根據本發明之一第一態樣，一多重自行車鏈輪總成具有一旋轉中心軸。該多重自行車鏈輪總成包括一鏈輪支撐部件及一第一鏈輪。 該鏈輪支撐部件係由一單個金屬板製成。該鏈輪支撐部件包含一第一鏈輪安裝部分、一第二鏈輪安裝部分及一第一連接部分。 該第二鏈輪安裝部分沿平行於該旋轉中心軸之一軸向方向與該第一鏈輪安裝部分間隔開。該第一連接部分互連該第一鏈輪安裝部分與該第二鏈輪安裝部分。 該第一鏈輪安裝部分具有一第一自行車面朝內表面及沿該軸向方向與該第一自行車面朝內表面相對之一第一自行車面朝外表面。 該第二鏈輪安裝部分具有一第二自行車面朝內表面及沿該軸向方向與該第二自行車面朝內表面相對之一第二自行車面朝外表面。 該第一鏈輪包含一第一鏈輪主體及相對於該旋轉中心軸自該第一鏈輪主體徑向朝外延伸之複數個第一鏈輪齒。 該第一鏈輪係與該鏈輪支撐部件分離之一部件。該第一鏈輪主體耦合至該第一鏈輪安裝部分之該第一自行車面朝內表面及該第一鏈輪安裝部分之該第一自行車面朝外表面中之一者。 在該多重自行車鏈輪總成中，由單個金屬板製成之該鏈輪支撐部件根據後鏈輪之數目支撐該等後鏈輪。 以此，該多重自行車鏈輪總成能夠減小重量且提高生產效率，此乃因鏈輪安裝部件之數目減少且鏈輪支撐部件容易形成。此外，該多重自行車鏈輪總成能夠改良材料之選擇靈活性，此乃因鏈輪支撐部件係與鏈輪分離之一部件。 根據本發明之一第二態樣，根據第一態樣之該多重自行車鏈輪總成可如下被構形。 該多重自行車鏈輪總成進一步包括一第二鏈輪、一第三鏈輪及一第四鏈輪。 該第二鏈輪包含一第二鏈輪主體及相對於該旋轉中心軸自該第二鏈輪主體徑向朝外延伸之複數個第二鏈輪齒。該第二鏈輪係與該鏈輪支撐部件分離之一部件。該第二鏈輪主體耦合至該第一鏈輪安裝部分之該第一自行車面朝內表面及該第一鏈輪安裝部分之該第一自行車面朝外表面中之另一者。 該第三鏈輪包含一第三鏈輪主體及相對於該旋轉中心軸自該第三鏈輪主體徑向朝外延伸之複數個第三鏈輪齒。該第三鏈輪係與該鏈輪支撐部件分離之一部件。該第三鏈輪主體耦合至該第二鏈輪安裝部分之該第二自行車面朝內表面及該第二鏈輪安裝部分之該第二自行車面朝外表面中之一者。 該第四鏈輪包含一第四鏈輪主體及相對於該旋轉中心軸自該第四鏈輪主體徑向朝外延伸之複數個第四鏈輪齒。該第四鏈輪係與該鏈輪支撐部件分離之一部件。該第四鏈輪主體耦合至該第二鏈輪安裝部分之該第二自行車面朝內表面及該第二鏈輪安裝部分之該第二自行車面朝外表面中之另一者。 在該多重自行車鏈輪總成中，由單個金屬板製成之該鏈輪支撐部件支撐第一後鏈輪至第四後鏈輪。以此，具有至少四個速度級之該多重自行車鏈輪總成能夠減小重量且提高生產效率。 根據本發明之一第三態樣，根據第二態樣之該多重自行車鏈輪總成可如下被構形。 該鏈輪支撐部件進一步包含一第三鏈輪安裝部分及一第二連接部分。該第三鏈輪安裝部分沿該軸向方向與該第二鏈輪安裝部分間隔開。該第二連接部分互連該第二鏈輪安裝部分與該第三鏈輪安裝部分。 該第三鏈輪安裝部分具有一第三自行車面朝內表面及在沿軸向方向與該第三自行車面朝內表面相對之一第三自行車面朝外表面。 該多重自行車鏈輪總成進一步包括一第五鏈輪及一第六鏈輪。該第五鏈輪包含一第五鏈輪主體及相對於該旋轉中心軸自該第五鏈輪主體徑向朝外延伸之複數個第五鏈輪齒。該第五鏈輪係與該鏈輪支撐部件分離之一部件。該第五鏈輪主體耦合至該第三鏈輪安裝部分之該第三自行車面朝內表面及該第三鏈輪安裝部分之該第三自行車面朝外表面中之一者。 該第六鏈輪包含一第六鏈輪主體及相對於該旋轉中心軸自該第六鏈輪主體徑向朝外延伸之複數個第六鏈輪齒。該第六鏈輪係與該鏈輪支撐部件分離之一部件。該第六鏈輪主體耦合至該第三鏈輪安裝部分之該第三自行車面朝內表面及該第三鏈輪安裝部分之該第三自行車面朝外表面中之另一者。 在該多重自行車鏈輪總成中，由單個金屬板製成之該鏈輪支撐部件支撐第一後鏈輪至第六後鏈輪。以此，具有至少六個速度級之該多重自行車鏈輪總成能夠減小重量且提高生產效率。 根據本發明之一第四態樣，根據第三態樣之該多重自行車鏈輪總成可如下被構形。 該鏈輪支撐部件進一步包含一第四鏈輪安裝部分及一第三連接部分。該第四鏈輪安裝部分沿該軸向方向與該第三鏈輪安裝部分間隔開。該第三連接部分互連該第三鏈輪安裝部分與該第四鏈輪安裝部分。 該第四鏈輪安裝部分具有一第四自行車面朝內表面及沿該軸向方向與該第四自行車面朝內表面相對之一第四自行車面朝外表面。 該多重自行車鏈輪總成進一步包括一第七鏈輪及一第八鏈輪。該第七鏈輪包含一第七鏈輪主體及相對於該旋轉中心軸自該第七鏈輪主體徑向朝外延伸之複數個第七鏈輪齒。 該第七鏈輪係與該鏈輪支撐部件分離之一部件。該第七鏈輪主體耦合至該第四鏈輪安裝部分之該第四自行車面朝內表面及該第四鏈輪安裝部分之該第四自行車面朝外表面中之一者。 該第八鏈輪包含一第八鏈輪主體及相對於該旋轉中心軸自該第八鏈輪主體徑向朝外延伸之複數個第八鏈輪齒。 該第八鏈輪係與該鏈輪支撐部件分離之一部件。該第八鏈輪主體耦合至該第四鏈輪安裝部分之該第四自行車面朝內表面及該第四鏈輪安裝部分之該第四自行車面朝外表面中之另一者。 在該多重自行車鏈輪總成中，由單個金屬板製成之該鏈輪支撐部件支撐第一後鏈輪至第八後鏈輪。以此，具有至少第八速度級之該多重自行車鏈輪總成能夠減小重量且提高生產效率。 根據本發明之一第五態樣，根據第二態樣至第四態樣之該多重自行車鏈輪總成可如下被構形。 該第一鏈輪安裝部分之至少一部分係相對於該旋轉中心軸而自該第二鏈輪安裝部分徑向朝外安置。 該第一鏈輪具有一第一總齒數目。該第一鏈輪耦合至該第一鏈輪安裝部分之該第一自行車面朝內表面。該第二鏈輪具有小於該第一總齒數目之一第二總齒數目。該第二鏈輪主體耦合至該第一鏈輪安裝部分之該第一自行車面朝外表面。 該第三鏈輪具有小於該第二總齒數目之一第三總齒數目。該第三鏈輪主體耦合至該第二鏈輪安裝部分之該第二自行車面朝內表面。該第四鏈輪具有小於該第三總齒數目之一第四總齒數目。該第四鏈輪主體耦合至該第二鏈輪安裝部分之該第二自行車面朝外表面。 以此，具有至少四個速度級之該多重自行車鏈輪總成能夠減小重量且提高生產效率。此外，具有至少四個速度級之該多重自行車鏈輪總成可具有一寬範圍之一齒數比。 根據本發明之一第六態樣，根據第三態樣之該多重自行車鏈輪總成可如下被構形。 該第二鏈輪安裝部分之至少一部分係相對於該旋轉中心軸而自該第三鏈輪安裝部分徑向朝外安置。 該第五鏈輪具有小於該第四總齒數目之一第五總齒數目。該第五鏈輪主體耦合至該第三鏈輪安裝部分之該第三自行車面朝內表面。該第六鏈輪具有小於該第五總齒數目之一第六總齒數目。該第六鏈輪主體耦合至該第三鏈輪安裝部分之該第三自行車面朝外表面。 以此，具有至少六個速度級之該多重自行車鏈輪總成能夠減小重量且提高生產效率。此外，具有至少六個速度級之該多重自行車鏈輪總成可具有一寬範圍之一齒數比。 根據本發明之一第七態樣，根據第四態樣之該多重自行車鏈輪總成可如下被構形。 該第三鏈輪安裝部分之至少一部分係相對於該旋轉中心軸而自該第四鏈輪安裝部分徑向朝外安置。 該第七鏈輪具有小於該第六總齒數目之一第七總齒數目。該第七鏈輪主體耦合至該第四鏈輪安裝部分之該第四自行車面朝內表面。該第八鏈輪具有小於該第七總齒數目之一第八總齒數目。該第八鏈輪主體耦合至該第四鏈輪安裝部分之該第四自行車面朝外表面。 以此，具有至少八個速度級之該多重自行車鏈輪總成能夠減小重量且提高生產效率。此外，具有至少八個速度級之該多重自行車鏈輪總成可具有一寬範圍之一齒數比。 根據本發明之一第八態樣，根據第一態樣至第六態樣之該多重自行車鏈輪總成可如下被構形。該第一鏈輪具有一輪轂嚙合輪廓。 此構形允許該多重自行車鏈輪總成與該輪轂嚙合而無需製備另一者部件。 根據本發明之一第九態樣，根據該第四態樣之該多重自行車鏈輪總成可如下被構形。該第四鏈輪安裝部分具有一輪轂嚙合輪廓。 此構形允許該多重自行車鏈輪總成與該輪轂嚙合而無需製備另一者部件。 根據本發明之一第十態樣，根據第二態樣至第九態樣之該多重自行車鏈輪總成可如下被構形。 該第一鏈輪之該第一鏈輪主體藉由一第一緊固部件而耦合至該鏈輪支撐部件之該第一鏈輪安裝部分之該第一自行車面朝內表面。該第一緊固部件係與該鏈輪支撐部件、該第一鏈輪及該第二鏈輪分離之一部件。以此，該多重自行車鏈輪總成能夠改良材料之選擇靈活性。 根據本發明之一第十一態樣，根據第十態樣之該多重自行車鏈輪總成可如下被構形。 該第二鏈輪之該第二鏈輪主體藉由該第一緊固部件而耦合至該鏈輪支撐部件之該第一鏈輪安裝部分之該第一自行車面朝外表面。以此，該多重鏈輪總成能夠減小重量且提高生產效率，此乃因該第一鏈輪及該第二鏈輪藉由一共同緊固件耦合至該第一鏈輪安裝部分。 根據本發明之一第十二態樣，根據第二態樣至第六態樣之該多重自行車鏈輪總成可如下被構形。 該第三鏈輪之該第三鏈輪主體藉由一第二緊固部件而耦合至該鏈輪支撐部件之該第二鏈輪安裝部分之該第二自行車面朝內表面。該第二緊固部件係與該鏈輪支撐部件、該第三鏈輪及該第四鏈輪分離之一部件。以此，該多重自行車鏈輪總成能夠改良材料之選擇靈活性。 根據本發明之一第十三態樣，根據第十二態樣之該多重自行車鏈輪總成可如下被構形。 該第四鏈輪之該第四鏈輪主體藉由該第二緊固部件而耦合至該鏈輪支撐部件之該第二鏈輪安裝部分之該第二自行車面朝外表面。以此，該多重鏈輪總成能夠減小重量且提高生產效率，此乃因該第三鏈輪及該第四鏈輪藉由一共同緊固件耦合至該第二鏈輪安裝部分。 根據本發明之一第十四態樣，根據第三或第四態樣之該多重自行車鏈輪總成可如下被構形。 該第五鏈輪之該第五鏈輪主體藉由一第三緊固部件而耦合至該鏈輪支撐部件之該第三鏈輪安裝部分之該第三自行車面朝內表面。該第三緊固部件係與該鏈輪支撐部件、該第五鏈輪及該第六鏈輪分離之一部件。以此，該多重鏈輪總成能夠減小重量且提高生產效率。 根據本發明之一第十五態樣，根據第十四態樣之該多重自行車鏈輪總成可如下被構形。 該第六鏈輪之該第六鏈輪主體藉由該第三緊固部件而耦合至該鏈輪支撐部件之該第三鏈輪安裝部分之該第三自行車面朝外表面。以此，該多重鏈輪總成能夠減小重量且提高生產效率，此乃因該第五鏈輪及該第六鏈輪藉由一共同緊固件耦合至該第三鏈輪安裝部分。 根據本發明之一第十六態樣，根據第四態樣之該多重自行車鏈輪總成可如下被構形。 該第七鏈輪之該第七鏈輪主體藉由一第四緊固部件而耦合至該鏈輪支撐部件之該第四鏈輪安裝部分之該第四自行車面朝內表面。該第四緊固部件係一與該鏈輪支撐部件、該第七鏈輪及該第八鏈輪分離之部件。以此，該多重自行車鏈輪總成能夠改良材料之選擇靈活性。 根據本發明之一第十七態樣，根據第十六態樣之該多重自行車鏈輪總成可如下被構形。 該第八鏈輪之該第八鏈輪主體藉由該第四緊固部件而耦合至該鏈輪支撐部件之該第四鏈輪安裝部分之該第四自行車面朝外表面。以此，該多重鏈輪總成能夠減小重量且提高生產效率，此乃因該第七鏈輪及該第八鏈輪藉由一共同緊固件耦合至該第四鏈輪安裝部分。 根據本發明之一第十八態樣，根據第十態樣至第十七態樣之該多重自行車鏈輪總成可如下被構形。該第一緊固部件包含一鉚釘。 此構形允許該等後鏈輪容易且可靠地固定於該鏈輪安裝部件上。 根據本發明之一第十九態樣，根據第十態樣至第十七態樣之該多重自行車鏈輪總成可如下被構形。該第一緊固部件包含黏合劑。以此，該多重鏈輪總成能夠減小重量，此乃因該緊固部件並非一金屬部件。 根據本發明之一第二十態樣，根據第十二態樣至第十七態樣之該多重自行車鏈輪總成可如下被構形。該第二緊固部件包含一鉚釘。 此構形允許該等後鏈輪容易且可靠地固定於該鏈輪安裝部件上。 根據本發明之一第二十一態樣，根據第十二態樣至第十七態樣之該多重自行車鏈輪總成可如下被構形。第二緊固部件包含黏合劑。以此，該多重鏈輪總成能夠減小重量，此乃因緊固部件並非一金屬部件。 根據本發明之一第二十二態樣，根據第十四態樣至第十七態樣之該多重自行車鏈輪總成可如下被構形。該第三緊固部件包含一鉚釘。 此構形允許該等後鏈輪容易且可靠地固定於該鏈輪安裝部件上。 根據本發明之一第二十三態樣，根據第十四態樣至第十七態樣之該多重自行車鏈輪總成可如下被構形。該第三緊固部件包含黏合劑。以此，該多重鏈輪總成能夠減小重量，此乃因該緊固部件並非一金屬部件。 根據本發明之一第二十四態樣，根據第十六態樣或第十七態樣之該多重自行車鏈輪總成可如下被構形。該第四緊固部件包含一鉚釘。 此構形允許該等後鏈輪容易且可靠地固定於該鏈輪安裝部件上。 根據本發明之一第二十五態樣，根據第十六態樣或第十七態樣之該多重自行車鏈輪總成可如下被構形。該第四緊固部件包含黏合劑。以此，該多重鏈輪總成能夠減小重量，此乃因該緊固部件並非一金屬部件。 根據本發明之一第二十六態樣，根據第一態樣至第二十五態樣之該多重自行車鏈輪總成可如下被構形。 該第一連接部分藉由使該鏈輪支撐部件變形而相對於該第一鏈輪安裝部分及該第二鏈輪安裝部分不平行地延伸。以此，該多重鏈輪總成能夠提高生產效率。 根據本發明之一第二十七態樣，根據第一態樣至第二十六態樣之該多重自行車鏈輪總成可如下被構形。 該鏈輪支撐部件進一步包含一第三鏈輪安裝部分及一第二連接部分。 該第三鏈輪安裝部分沿該軸向方向與該第二鏈輪安裝部分間隔開。該第二連接部分互連該第二鏈輪安裝部分與該第三鏈輪安裝部分。 該第二連接部分藉由使該鏈輪支撐部件變形而相對於該第二鏈輪安裝部分及該第三鏈輪安裝部分不平行地延伸。以此，該多重鏈輪總成能夠提高生產效率。 根據本發明之一第二十八態樣，根據第三態樣至第二十七態樣之該多重自行車鏈輪總成可如下被構形。 該鏈輪支撐部件進一步包含一第四鏈輪安裝部分及一第三連接部分。該第四鏈輪安裝部分沿該軸向方向與該第三鏈輪安裝部分間隔開。該第三連接部分互連該第三鏈輪安裝部分與該第四鏈輪安裝部分。 該第三連接部分藉由使該鏈輪支撐部件變形而相對於該第三鏈輪安裝部分及該第四鏈輪安裝部分不平行地延伸。以此，該多重鏈輪總成能夠提高生產效率。 根據本發明之一第二十九態樣，根據第一至第二十八態樣之該多重自行車鏈輪總成可如下被構形。 該第一鏈輪安裝部分包含一第一基座部分及至少一個第一安裝突片。 以此，該多重自行車鏈輪總成能夠減小重量且提高生產效率，此乃因鏈輪安裝部件之數目減少且鏈輪支撐部件容易形成。此外，該多重自行車鏈輪總成能夠改良材料之選擇靈活性，此乃因該鏈輪支撐部件係與該等鏈輪分離之一部件。 根據本發明之一第三十態樣，根據第二十九態樣之該多重自行車鏈輪總成可如下被構形。 該第二鏈輪安裝部分包含一第二基座部分及至少一個第二安裝突片。 以此，該多重自行車鏈輪總成能夠減小重量且提高生產效率，此乃因鏈輪安裝部件之數目減少且鏈輪支撐部件容易形成。此外，該多重自行車鏈輪總成能夠改良材料之選擇靈活性，此乃因該鏈輪支撐部件係與該等鏈輪分離之一部件。 根據本發明之一第三十一態樣，根據第三十態樣之該多重自行車鏈輪總成可如下被構形。 該至少一個第一安裝突片相對於該旋轉中心軸而沿一圓周方向自該至少一個第二安裝突片偏移。此構形允許藉由該鏈輪安裝部件容易且精確地定位該等後鏈輪中之每一者。 根據本發明之一第三十二態樣，根據第三十態樣或第三十一態樣之該多重自行車鏈輪總成可如下被構形。 該鏈輪支撐部件進一步包含沿該軸向方向與該第二鏈輪安裝部分間隔開之一第三鏈輪安裝部分。該第三鏈輪安裝部分包含一第三基座部分及至少一個第三安裝突片。 以此，該多重自行車鏈輪總成能夠減小重量且提高生產效率，此乃因鏈輪安裝部件之數目減少且鏈輪支撐部件容易形成。此外，該多重自行車鏈輪總成能夠改良材料之選擇靈活性，此乃因該鏈輪支撐部件係與該等鏈輪分離之一部件。 根據本發明之一第三十三態樣，根據第三十二態樣之該多重自行車鏈輪總成可如下被構形。 該至少一個第一安裝突片、該至少一個第二安裝突片及該至少一個第三安裝突片相對於該旋轉中心軸而沿一圓周方向自彼此偏移。此構形允許藉由該鏈輪安裝部件容易且精確地定位該等後鏈輪中之每一者。 根據本發明之一第三十四態樣，根據第三十二態樣或第三十三態樣之該多重自行車鏈輪總成可如下被構形。 該鏈輪支撐部件進一步包含沿該軸向方向與該第三鏈輪安裝部分間隔開之一第四鏈輪安裝部分。該第四鏈輪安裝部分包含一第四基座部分及至少一個第四安裝突片。 以此，該多重自行車鏈輪總成能夠減小重量且提高生產效率，此乃因鏈輪安裝部件之數目減少且鏈輪支撐部件容易形成。此外，該多重自行車鏈輪總成能夠改良材料之選擇靈活性，此乃因該鏈輪支撐部件係與該等鏈輪分離之一部件。 根據本發明之一第三十五態樣，根據第三十四態樣之該多重自行車鏈輪總成可如下被構形。 該至少一個第一安裝突片、該至少一個第二安裝突片、該至少一個第三安裝突片及該至少一個第四安裝突片相對於該旋轉中心軸而沿一圓周方向自彼此偏移。此構形允許藉由鏈輪安裝部件容易且精確地定位該等後鏈輪中之每一者。In accordance with a first aspect of the present invention, a multiple bicycle sprocket assembly has a central axis of rotation. The multiple bicycle sprocket assembly includes a sprocket support member and a first sprocket. The sprocket support member is made of a single metal plate. The sprocket support member includes a first sprocket mounting portion, a second sprocket mounting portion and a first connecting portion. The second sprocket mounting portion is spaced apart from the first sprocket mounting portion in an axial direction parallel to one of the central axes of rotation. The first connecting portion interconnects the first sprocket mounting portion and the second sprocket mounting portion. The first sprocket mounting portion has a first bicycle facing inner surface and a first bicycle facing outward surface opposite the first bicycle facing inner surface in the axial direction. The second sprocket mounting portion has a second bicycle facing inner surface and a second bicycle facing outward surface opposite the second bicycle facing inner surface in the axial direction. The first sprocket includes a first sprocket body and a plurality of first sprocket teeth extending radially outward from the first sprocket body relative to the central axis of rotation. The first sprocket is separated from the sprocket support member by one of the components. The first sprocket body is coupled to one of the first bicycle facing inner surface of the first sprocket mounting portion and the first bicycle facing outward surface of the first sprocket mounting portion. In the multiple bicycle sprocket assembly, the sprocket support members made of a single metal plate support the rear sprocket according to the number of rear sprocket wheels. Thereby, the multiple bicycle sprocket assembly can reduce the weight and increase the production efficiency because the number of sprocket mounting members is reduced and the sprocket support member is easily formed. In addition, the multiple bicycle sprocket assembly can improve the flexibility of material selection due to the fact that the sprocket support member is separated from the sprocket. According to a second aspect of the present invention, the multiple bicycle sprocket assembly according to the first aspect can be configured as follows. The multiple bicycle sprocket assembly further includes a second sprocket, a third sprocket and a fourth sprocket. The second sprocket includes a second sprocket body and a plurality of second sprocket teeth extending radially outward from the second sprocket body relative to the central axis of rotation. The second sprocket is separated from the sprocket support member by one of the components. The second sprocket body is coupled to the other of the first bicycle facing inner surface of the first sprocket mounting portion and the first bicycle facing outward surface of the first sprocket mounting portion. The third sprocket includes a third sprocket body and a plurality of third sprocket teeth extending radially outward from the third sprocket body with respect to the central axis of rotation. The third sprocket is separated from the sprocket support member by one of the components. The third sprocket body is coupled to one of the second bicycle facing inner surface of the second sprocket mounting portion and the second bicycle facing outward surface of the second sprocket mounting portion. The fourth sprocket includes a fourth sprocket body and a plurality of fourth sprocket teeth extending radially outward from the fourth sprocket body with respect to the central axis of rotation. The fourth sprocket is separated from the sprocket support member by one of the components. The fourth sprocket body is coupled to the other of the second bicycle facing inner surface of the second sprocket mounting portion and the second bicycle facing outward surface of the second sprocket mounting portion. In the multiple bicycle sprocket assembly, the sprocket support member made of a single metal plate supports the first rear sprocket to the fourth rear sprocket. In this way, the multiple bicycle sprocket assembly having at least four speed steps can reduce weight and increase production efficiency. According to a third aspect of the present invention, the multiple bicycle sprocket assembly according to the second aspect can be configured as follows. The sprocket support member further includes a third sprocket mounting portion and a second connecting portion. The third sprocket mounting portion is spaced apart from the second sprocket mounting portion in the axial direction. The second connecting portion interconnects the second sprocket mounting portion and the third sprocket mounting portion. The third sprocket mounting portion has a third bicycle facing inner surface and a third bicycle facing outward surface opposite the third bicycle facing inner surface in the axial direction. The multiple bicycle sprocket assembly further includes a fifth sprocket and a sixth sprocket. The fifth sprocket includes a fifth sprocket body and a plurality of fifth sprocket teeth extending radially outward from the fifth sprocket body with respect to the central axis of rotation. The fifth sprocket is separated from the sprocket support member by one of the components. The fifth sprocket body is coupled to one of the third bicycle facing inner surface of the third sprocket mounting portion and the third bicycle facing outward surface of the third sprocket mounting portion. The sixth sprocket includes a sixth sprocket body and a plurality of sixth sprocket teeth extending radially outward from the sixth sprocket body with respect to the central axis of rotation. The sixth sprocket is separated from the sprocket support member by one of the components. The sixth sprocket body is coupled to the other of the third bicycle facing inner surface of the third sprocket mounting portion and the third bicycle facing outward surface of the third sprocket mounting portion. In the multiple bicycle sprocket assembly, the sprocket support member made of a single metal plate supports the first rear sprocket to the sixth rear sprocket. In this way, the multiple bicycle sprocket assembly having at least six speed steps can reduce weight and increase production efficiency. According to a fourth aspect of the present invention, the multiple bicycle sprocket assembly according to the third aspect can be configured as follows. The sprocket support member further includes a fourth sprocket mounting portion and a third connecting portion. The fourth sprocket mounting portion is spaced apart from the third sprocket mounting portion in the axial direction. The third connecting portion interconnects the third sprocket mounting portion and the fourth sprocket mounting portion. The fourth sprocket mounting portion has a fourth bicycle facing inner surface and a fourth bicycle facing outward surface opposite the fourth bicycle facing inner surface in the axial direction. The multiple bicycle sprocket assembly further includes a seventh sprocket and an eighth sprocket. The seventh sprocket includes a seventh sprocket body and a plurality of seventh sprocket teeth extending radially outward from the seventh sprocket body with respect to the central axis of rotation. The seventh sprocket is separated from the sprocket support member by one of the components. The seventh sprocket body is coupled to one of the fourth bicycle facing inner surface of the fourth sprocket mounting portion and the fourth bicycle facing outward surface of the fourth sprocket mounting portion. The eighth sprocket includes an eighth sprocket body and a plurality of eighth sprocket teeth extending radially outward from the eighth sprocket body with respect to the central axis of rotation. The eighth sprocket is separated from the sprocket support member by one of the components. The eighth sprocket body is coupled to the other of the fourth bicycle facing inner surface of the fourth sprocket mounting portion and the fourth bicycle facing outward surface of the fourth sprocket mounting portion. In the multiple bicycle sprocket assembly, the sprocket support member made of a single metal plate supports the first rear sprocket to the eighth rear sprocket. In this way, the multiple bicycle sprocket assembly having at least an eighth speed stage can reduce weight and increase production efficiency. According to a fifth aspect of the present invention, the multiple bicycle sprocket assembly according to the second aspect to the fourth aspect can be configured as follows. At least a portion of the first sprocket mounting portion is disposed radially outward from the second sprocket mounting portion relative to the central axis of rotation. The first sprocket has a first total number of teeth. The first sprocket is coupled to the first bicycle facing inner surface of the first sprocket mounting portion. The second sprocket has a second total number of teeth that is less than one of the first total number of teeth. The second sprocket body is coupled to the first bicycle facing outward surface of the first sprocket mounting portion. The third sprocket has a third total number of teeth that is less than one of the second total number of teeth. The third sprocket body is coupled to the second bicycle facing inner surface of the second sprocket mounting portion. The fourth sprocket has a fourth total number of teeth that is less than one of the third total number of teeth. The fourth sprocket body is coupled to the second bicycle facing outward surface of the second sprocket mounting portion. In this way, the multiple bicycle sprocket assembly having at least four speed steps can reduce weight and increase production efficiency. Additionally, the multiple bicycle sprocket assembly having at least four speed levels can have a wide range of gear ratios. According to a sixth aspect of the present invention, the multiple bicycle sprocket assembly according to the third aspect can be configured as follows. At least a portion of the second sprocket mounting portion is disposed radially outward from the third sprocket mounting portion relative to the central axis of rotation. The fifth sprocket has a fifth total number of teeth that is less than one of the fourth total number of teeth. The fifth sprocket body is coupled to the third bicycle facing inner surface of the third sprocket mounting portion. The sixth sprocket has a sixth total number of teeth that is less than one of the fifth total number of teeth. The sixth sprocket body is coupled to the third bicycle facing outward surface of the third sprocket mounting portion. In this way, the multiple bicycle sprocket assembly having at least six speed steps can reduce weight and increase production efficiency. Additionally, the multiple bicycle sprocket assembly having at least six speed steps can have a wide range of gear ratios. According to a seventh aspect of the present invention, the multiple bicycle sprocket assembly according to the fourth aspect can be configured as follows. At least a portion of the third sprocket mounting portion is disposed radially outward from the fourth sprocket mounting portion relative to the central axis of rotation. The seventh sprocket has a seventh total number of teeth that is less than one of the sixth total number of teeth. The seventh sprocket body is coupled to the fourth bicycle facing inner surface of the fourth sprocket mounting portion. The eighth sprocket has an eighth total number of teeth that is less than one of the seventh total number of teeth. The eighth sprocket body is coupled to the fourth bicycle facing outward surface of the fourth sprocket mounting portion. In this way, the multiple bicycle sprocket assembly having at least eight speed steps can reduce weight and increase production efficiency. Additionally, the multiple bicycle sprocket assembly having at least eight speed stages can have a wide range of gear ratios. According to an eighth aspect of the present invention, the multiple bicycle sprocket assembly according to the first aspect to the sixth aspect can be configured as follows. The first sprocket has a hub engagement profile. This configuration allows the multiple bicycle sprocket assembly to engage the hub without the need to prepare another component. According to a ninth aspect of the present invention, the multiple bicycle sprocket assembly according to the fourth aspect can be configured as follows. The fourth sprocket mounting portion has a hub engagement profile. This configuration allows the multiple bicycle sprocket assembly to engage the hub without the need to prepare another component. According to a tenth aspect of the present invention, the multiple bicycle sprocket assembly according to the second aspect to the ninth aspect can be configured as follows. The first sprocket body of the first sprocket is coupled to the first bicycle facing inner surface of the first sprocket mounting portion of the sprocket support member by a first fastening member. The first fastening component is separate from the sprocket support component, the first sprocket and the second sprocket. In this way, the multiple bicycle sprocket assembly can improve the flexibility of material selection. According to an eleventh aspect of the present invention, the multiple bicycle sprocket assembly according to the tenth aspect can be configured as follows. The second sprocket body of the second sprocket is coupled to the first bicycle facing outward surface of the first sprocket mounting portion of the sprocket support member by the first fastening member. In this way, the multiple sprocket assembly can reduce weight and increase production efficiency because the first sprocket and the second sprocket are coupled to the first sprocket mounting portion by a common fastener. According to a twelfth aspect of the present invention, the multiple bicycle sprocket assembly according to the second aspect to the sixth aspect can be configured as follows. The third sprocket body of the third sprocket is coupled to the second bicycle facing inner surface of the second sprocket mounting portion of the sprocket support member by a second fastening member. The second fastening component is separate from the sprocket support component, the third sprocket and the fourth sprocket. In this way, the multiple bicycle sprocket assembly can improve the flexibility of material selection. According to a thirteenth aspect of the present invention, the multiple bicycle sprocket assembly according to the twelfth aspect can be configured as follows. The fourth sprocket body of the fourth sprocket is coupled to the second bicycle facing outward surface of the second sprocket mounting portion of the sprocket support member by the second fastening member. In this way, the multiple sprocket assembly can reduce weight and increase production efficiency because the third sprocket and the fourth sprocket are coupled to the second sprocket mounting portion by a common fastener. According to an fourteenth aspect of the present invention, the multiple bicycle sprocket assembly according to the third or fourth aspect can be configured as follows. The fifth sprocket body of the fifth sprocket is coupled to the third bicycle facing inner surface of the third sprocket mounting portion of the sprocket support member by a third fastening member. The third fastening member is separated from the sprocket support member, the fifth sprocket, and the sixth sprocket. In this way, the multiple sprocket assembly can reduce weight and increase production efficiency. According to a fifteenth aspect of the present invention, the multiple bicycle sprocket assembly according to the fourteenth aspect can be configured as follows. The sixth sprocket body of the sixth sprocket is coupled to the third bicycle facing outward surface of the third sprocket mounting portion of the sprocket support member by the third fastening member. In this way, the multiple sprocket assembly can reduce weight and increase production efficiency because the fifth sprocket and the sixth sprocket are coupled to the third sprocket mounting portion by a common fastener. According to a sixteenth aspect of the present invention, the multiple bicycle sprocket assembly according to the fourth aspect can be configured as follows. The seventh sprocket body of the seventh sprocket is coupled to the fourth bicycle facing inner surface of the fourth sprocket mounting portion of the sprocket support member by a fourth fastening member. The fourth fastening component is a component separate from the sprocket support component, the seventh sprocket and the eighth sprocket. In this way, the multiple bicycle sprocket assembly can improve the flexibility of material selection. According to a seventeenth aspect of the present invention, the multiple bicycle sprocket assembly according to the sixteenth aspect can be configured as follows. The eighth sprocket body of the eighth sprocket is coupled to the fourth bicycle facing outward surface of the fourth sprocket mounting portion of the sprocket support member by the fourth fastening member. In this way, the multiple sprocket assembly can reduce weight and increase production efficiency because the seventh sprocket and the eighth sprocket are coupled to the fourth sprocket mounting portion by a common fastener. According to an eighteenth aspect of the present invention, the multiple bicycle sprocket assembly according to the tenth aspect to the seventeenth aspect can be configured as follows. The first fastening component includes a rivet. This configuration allows the rear sprocket to be easily and reliably secured to the sprocket mounting member. According to a nineteenth aspect of the present invention, the multiple bicycle sprocket assembly according to the tenth aspect to the seventeenth aspect can be configured as follows. The first fastening component comprises a binder. Thereby, the multiple sprocket assembly can reduce the weight because the fastening member is not a metal member. According to a twentieth aspect of the present invention, the multiple bicycle sprocket assembly according to the twelfth aspect to the seventeenth aspect can be configured as follows. The second fastening component includes a rivet. This configuration allows the rear sprocket to be easily and reliably secured to the sprocket mounting member. According to a twenty first aspect of the present invention, the multiple bicycle sprocket assembly according to the twelfth aspect to the seventeenth aspect can be configured as follows. The second fastening component comprises a binder. In this way, the multiple sprocket assembly can reduce the weight because the fastening component is not a metal component. According to a twenty second aspect of the present invention, the multiple bicycle sprocket assembly according to the fourteenth aspect to the seventeenth aspect can be configured as follows. The third fastening component comprises a rivet. This configuration allows the rear sprocket to be easily and reliably secured to the sprocket mounting member. According to a twenty-third aspect of the present invention, the multiple bicycle sprocket assembly according to the fourteenth aspect to the seventeenth aspect can be configured as follows. The third fastening component comprises a binder. Thereby, the multiple sprocket assembly can reduce the weight because the fastening member is not a metal member. According to a twenty-fourth aspect of the present invention, the multiple bicycle sprocket assembly according to the sixteenth or seventeenth aspect can be configured as follows. The fourth fastening component includes a rivet. This configuration allows the rear sprocket to be easily and reliably secured to the sprocket mounting member. According to a twenty-fifth aspect of the present invention, the multiple bicycle sprocket assembly according to the sixteenth or seventeenth aspect can be configured as follows. The fourth fastening component includes a binder. Thereby, the multiple sprocket assembly can reduce the weight because the fastening member is not a metal member. According to a twenty-sixth aspect of the present invention, the multiple bicycle sprocket assembly according to the first aspect to the twenty-fifth aspect can be configured as follows. The first connecting portion extends non-parallel with respect to the first sprocket mounting portion and the second sprocket mounting portion by deforming the sprocket support member. In this way, the multiple sprocket assembly can increase production efficiency. According to a twenty-seventh aspect of the present invention, the multiple bicycle sprocket assembly according to the first aspect to the twenty-sixth aspect can be configured as follows. The sprocket support member further includes a third sprocket mounting portion and a second connecting portion. The third sprocket mounting portion is spaced apart from the second sprocket mounting portion in the axial direction. The second connecting portion interconnects the second sprocket mounting portion and the third sprocket mounting portion. The second connecting portion extends non-parallel with respect to the second sprocket mounting portion and the third sprocket mounting portion by deforming the sprocket support member. In this way, the multiple sprocket assembly can increase production efficiency. According to a twenty-eighth aspect of the present invention, the multiple bicycle sprocket assembly according to the third aspect to the twenty-seventh aspect can be configured as follows. The sprocket support member further includes a fourth sprocket mounting portion and a third connecting portion. The fourth sprocket mounting portion is spaced apart from the third sprocket mounting portion in the axial direction. The third connecting portion interconnects the third sprocket mounting portion and the fourth sprocket mounting portion. The third connecting portion extends non-parallel with respect to the third sprocket mounting portion and the fourth sprocket mounting portion by deforming the sprocket support member. In this way, the multiple sprocket assembly can increase production efficiency. According to a twenty-ninth aspect of the present invention, the multiple bicycle sprocket assembly according to the first to twenty-eighth aspects can be configured as follows. The first sprocket mounting portion includes a first base portion and at least one first mounting tab. Thereby, the multiple bicycle sprocket assembly can reduce the weight and increase the production efficiency because the number of sprocket mounting members is reduced and the sprocket support member is easily formed. In addition, the multiple bicycle sprocket assembly can improve the flexibility of material selection because the sprocket support member is separate from the sprocket. According to a thirtieth aspect of the present invention, the multiple bicycle sprocket assembly according to the twenty-ninth aspect can be configured as follows. The second sprocket mounting portion includes a second base portion and at least one second mounting tab. Thereby, the multiple bicycle sprocket assembly can reduce the weight and increase the production efficiency because the number of sprocket mounting members is reduced and the sprocket support member is easily formed. In addition, the multiple bicycle sprocket assembly can improve the flexibility of material selection because the sprocket support member is separate from the sprocket. According to a thirty-first aspect of the present invention, the multiple bicycle sprocket assembly according to the thirtieth aspect can be configured as follows. The at least one first mounting tab is offset from the at least one second mounting tab in a circumferential direction relative to the central axis of rotation. This configuration allows each of the rear sprockets to be easily and accurately positioned by the sprocket mounting member. According to a thirty-second aspect of the present invention, the multiple bicycle sprocket assembly according to the thirtieth aspect or the thirty-first aspect can be configured as follows. The sprocket support member further includes a third sprocket mounting portion spaced apart from the second sprocket mounting portion in the axial direction. The third sprocket mounting portion includes a third base portion and at least one third mounting tab. Thereby, the multiple bicycle sprocket assembly can reduce the weight and increase the production efficiency because the number of sprocket mounting members is reduced and the sprocket support member is easily formed. In addition, the multiple bicycle sprocket assembly can improve the flexibility of material selection because the sprocket support member is separate from the sprocket. According to a thirty-third aspect of the present invention, the multiple bicycle sprocket assembly according to the thirty-second aspect can be configured as follows. The at least one first mounting tab, the at least one second mounting tab, and the at least one third mounting tab are offset from each other in a circumferential direction relative to the central axis of rotation. This configuration allows each of the rear sprockets to be easily and accurately positioned by the sprocket mounting member. According to a thirty fourth aspect of the present invention, the multiple bicycle sprocket assembly according to the thirty-second aspect or the thirty-third aspect can be configured as follows. The sprocket support member further includes a fourth sprocket mounting portion spaced apart from the third sprocket mounting portion in the axial direction. The fourth sprocket mounting portion includes a fourth base portion and at least one fourth mounting tab. Thereby, the multiple bicycle sprocket assembly can reduce the weight and increase the production efficiency because the number of sprocket mounting members is reduced and the sprocket support member is easily formed. In addition, the multiple bicycle sprocket assembly can improve the flexibility of material selection because the sprocket support member is separate from the sprocket. According to a thirty-fifth aspect of the present invention, the multiple bicycle sprocket assembly according to the thirty-fourth aspect can be configured as follows. The at least one first mounting tab, the at least one second mounting tab, the at least one third mounting tab, and the at least one fourth mounting tab are offset from each other in a circumferential direction with respect to the central axis of rotation . This configuration allows each of the rear sprockets to be easily and accurately positioned by the sprocket mounting member.

將參考圖式闡釋本發明技術之選定實施例。熟習此項技術者將依據本發明明瞭，僅為圖解說明起見而非出於限制如由隨附申請專利範圍及其等效內容定義之技術之目的而提供對本發明技術之實施例之以下說明。 實施例 ＜＜一自行車之一般構形＞＞ 如圖1所展示，一自行車1包含一自行車鏈條9、一車架11 (一自行車車架之一實例)、一把手13、一前輪轂總成15、前輪17及後輪19、一後變速器26及一驅動系統25。 車架11包含一車架主體11a。車架主體11a包含一頂部管11c、一頭部管11d、一座管11e、一下部管11f、一對鏈條支桿11g、一對座支桿11h及一底部托架懸置部12。座支桿11h與鏈條支桿11g之一連接部分在下文被闡述為一對後端11j。一前叉11b可旋轉地附接至車架主體11a之頭部管11d。 把手13固定至前叉11b。前輪轂總成15支撐於前叉11b上。前輪17經由前輪轂總成15可旋轉地附接至前叉11b。後輪19經由一後輪轂總成29可旋轉地附接至車架11 (車架主體11a)之一後部分。一前輪胎17a附接至前輪17。一後輪胎19a附接至後輪19。 後變速器26藉由附接至(例如)把手13之右側之一變速操作裝置24來將自行車鏈條9自一後鏈輪總成28之一個後鏈輪移動至後鏈輪總成28之一毗鄰後鏈輪。圖1中藉由一經簡化說明展示該等後鏈輪。後變速器26 (舉例而言)附接至車架11之後端11j。 ＜＜驅動系統之構形＞＞ 如圖1中所展示，驅動系統25主要包含一曲輪總成27、一後鏈輪總成28 (一多重後鏈輪總成之一實例)及一後輪轂總成29。 ＜曲輪總成＞ 如圖1中所展示，曲輪總成27可旋轉地支撐於車架11之一下部部分(舉例而言，底部托架懸置部12)上。曲輪總成27主要包含一曲輪輪軸(未展示)、一右曲輪臂33、一左曲輪臂(未展示)及一前鏈輪35。 曲輪總成27與一習用曲輪總成實質上相同。因此，實施例中簡要闡述曲輪總成27之構形。 曲輪輪軸可旋轉地支撐於底部托架懸置部12上。曲輪輪軸之兩端分別附接至右曲輪臂33及左曲輪臂之一端。一對踏板34分別附接至右曲輪臂33及左曲輪臂之另一端。前鏈輪35附接至右曲輪臂33以便可與右曲輪臂33整體地旋轉。前鏈輪35可由兩個或三個前鏈輪構成。 ＜後輪轂總成＞ 如圖1中所展示，後輪轂總成29安裝於車架11之後部分(舉例而言，後端11j)上。後輪轂總成29與一習用後輪轂總成實質上相同。因此，實施例中簡要闡述後輪轂總成29之構形。 後輪轂總成29經構形以將後鏈輪總成28安裝於其上。後輪轂總成29主要包含一後輪轂輪軸51、一後輪轂外殼(未展示)及一鏈輪安裝部件39 (參見圖2)。 後輪轂輪軸51之兩端支撐於該對後端11j上。後輪轂輪軸51安置於輪轂外殼主體中。後輪轂外殼形成為一實質上管狀形狀。後輪轂外殼經由軸承可旋轉地支撐於後輪轂輪軸51上。 鏈輪安裝部件39形成為一實質上管狀形狀。鏈輪安裝部件39經由軸承可旋轉地支撐於後輪轂輪軸51上。 鏈輪安裝部件39安裝至後輪轂外殼，以便與後輪轂外殼整體地圍繞一旋轉中心軸C1旋轉。 鏈輪安裝部件39支撐後鏈輪總成28以便與後鏈輪總成28整體地圍繞旋轉中心軸C1旋轉。 ＜後鏈輪總成＞ 如圖1至圖3中所展示，後鏈輪總成28 (亦即多重後鏈輪總成28)包含旋轉中心軸C1。後鏈輪總成28支撐於後輪轂總成29上。後鏈輪總成28與後輪轂總成29 (例如後輪轂外殼及鏈輪安裝部件39)整體地圍繞旋轉中心軸C1旋轉。 如圖2至圖7中所展示，後鏈輪總成28包含一鏈輪支撐部件40及多個後鏈輪41。 (鏈輪支撐部件) 鏈輪支撐部件40係由一單個金屬板製成。如本文中所使用，術語「單個金屬板」意欲係意指由一金屬材料(諸如鋁、鐵及鈦)製成之一個一體單件式板狀部件之一術語。因此，術語「單個金屬板」不囊括其中一板狀部件包括藉由(例如)黏合劑、一緊固件等附接至彼此之數個件之一構形。鏈輪支撐部件40之每一部分(如下文闡述)係藉由使單個金屬板變形而形成。 如圖6及圖7中所展示，鏈輪支撐部件40包含一第一鏈輪安裝部分42、一第二鏈輪安裝部分43、一第三鏈輪安裝部分44、一第四鏈輪安裝部分45。此外，鏈輪支撐部件40進一步包含至少一個第一連接部分46 (一第一連接部分之一實例)、至少一個第二連接部分47 (一第二連接部分之一實例)及至少一個第三連接部分48 (一第三連接部分之一實例)。較佳地，鏈輪支撐部件40包含複數個第一連接部分46、複數個第二連接部分47及複數個第三連接部分48。 如圖6中所展示，第二鏈輪安裝部分43沿平行於旋轉中心軸C1之一軸向方向與第一鏈輪安裝部分42間隔開。 此外，第一鏈輪安裝部分42之至少一部分係相對於旋轉中心軸C1而自第二鏈輪安裝部分43徑向朝外安置。 在實施例中，如圖6及圖7中所展示，第一鏈輪安裝部分42之一總體部分係相對於旋轉中心軸C1而自第二鏈輪安裝部分43徑向朝外安置。 第一鏈輪安裝部分42包含一第一基座部分42a及複數個第一安裝突片42b (至少一個第一安裝突片42b之一實例)。 第一基座部分42a形成為一實質上環形形狀。 該複數個第一安裝突片42b係相對於旋轉中心軸C1沿一圓周方向有間隔地安置。第一安裝突片42b中之每一者相對於旋轉中心軸C1沿一徑向方向而自第一基座部分42a徑向朝外延伸。具體而言，第一安裝突片42b中之每一者沿徑向方向自第一基座部分42a至外側凸出。 至少一個第一安裝突片42b相對於旋轉中心軸C1而沿圓周方向自至少一個第二安裝突片43b (如下文所闡述)偏移。在實施例中，當自軸向方向觀察鏈輪支撐部件40時，第一安裝突片42b中之每一者沿圓周方向自第二安裝突片43b中之每一者偏移。 第一安裝突片42b中展之每一者包含一第一安裝鏜孔42c。第一安裝鏜孔42c沿軸向方向穿過第一安裝突片42b。一第一緊固部件61 (如下文所闡述)插入至第一安裝鏜孔42c中。 第一鏈輪安裝部分42進一步包含一第一自行車面朝內表面42e及在沿軸向方向上與第一自行車面朝內表面42e相對的一第一自行車面朝外表面42d。換言之，第一自行車面朝內表面42e與第一自行車面朝外表面42d相比關於軸向方向而面向一反向方向。 片語「面朝外表面」指示面向遠離垂直於旋轉中心軸C1之一方向且穿過車架11之一軸心之一自行車車架軸心平面的一表面。片語「面朝內表面」指示面向自行車車架軸心平面之一表面。 在其中後鏈輪總成28安裝至車架11之一狀態中，第一自行車面朝外表面42d面向後端11j。 在其中後鏈輪總成28安裝至車架11之一狀態中，第一自行車面朝內表面42e設置於遠離後端11j之一側上。換言之，在該狀態中，第一自行車面朝內表面42e面向後輪19。 如圖6中所展示，第二鏈輪安裝部分43沿平行於旋轉中心軸C1之軸向方向與第一鏈輪安裝部分42間隔開。具體而言，第二鏈輪安裝部分43係沿軸向方向安置於第一鏈輪安裝部分42與第三鏈輪安裝部分44之間。 此外，第二鏈輪安裝部分43之至少一部分係相對於旋轉中心軸C1而自第三鏈輪安裝部分44徑向朝外安置。 在實施例中，如圖6及圖7中所展示，第二鏈輪安裝部分43之一總體部分係相對於旋轉中心軸C1而自第三鏈輪安裝部分44徑向朝外安置。 第二鏈輪安裝部分43包含一第二基座部分43a及複數個第二安裝突片43b (至少一個第二安裝突片43b之一實例)。 第二基座部分43a形成為一實質上環形形狀。 該複數個第二安裝突片43b係相對於旋轉中心軸C1沿圓周方向有間隔地安置。第二安裝突片43b中之每一者相對於旋轉中心軸C1而沿一徑向方向自第二基座部分43a徑向朝外延伸。具體而言，第二安裝突片43b之每一者沿徑向方向自第二基座部分43a至外側凸出。 至少一個第二安裝突片43b相對於旋轉中心軸C1而沿圓周方向自至少一個第一安裝突片42b偏移。 此外，至少一個第二安裝突片43b相對於旋轉中心軸C1而沿圓周方向自至少一個第三安裝突片44b (如下文所闡述)偏移。 在實施例中，當自軸向方向觀察鏈輪支撐部件40時，第二安裝突片43b中之每一者沿沿圓周方向自第一安裝突片42b中之每一者及第三安裝突片44b中之每一者偏移。 第二安裝突片43b中之每一者包含一第二安裝鏜孔43c。第二安裝鏜孔43c沿軸向方向穿過第二安裝突片43b。一第二緊固部件62 (如下文所闡述)插入至第二安裝鏜孔43c中。 第二鏈輪安裝部分43進一步包含一第二自行車面朝內表面43e及在軸向方向上與第二自行車面朝內表面43e相對之一第二自行車面朝外表面43d。換言之，第二自行車面朝內表面43e與第二自行車面朝外表面43d相比關於軸向方向而面向一反向方向。 在其中後鏈輪總成28安裝至車架11之一狀態中，第二自行車面朝外表面43d面向後端11j。 在其中後鏈輪總成28安裝至車架11之一狀態中，第二自行車面朝內表面43e設置於遠離後端11j之一側上。換言之，在該狀態中，第二自行車面朝內表面43e面向後輪19。 如圖6中所展示，第三鏈輪安裝部分44沿軸向方向與第二鏈輪安裝部分43間隔開。具體而言，第三鏈輪安裝部分44係沿軸向方向安置於第二鏈輪安裝部分43與第四鏈輪安裝部分45之間。 第三鏈輪安裝部分44之至少一部分係相對於旋轉中心軸C1而自第四鏈輪安裝部分45徑向朝外安置。 在實施例中，如圖6及圖7中所展示，第三鏈輪安裝部分44之一總體部分係相對於旋轉中心軸C1而自第四鏈輪安裝部分45徑向朝外安置。 第三鏈輪安裝部分44包含一第三基座部分44a及複數個第三安裝突片44b (至少一個第三安裝突片44b之一實例)。 第三基座部分44a形成為一實質上環形形狀。 該複數個第三安裝突片44b係相對於旋轉中心軸C1沿圓周方向有間隔地安置。第三安裝突片44b中之每一者相對於旋轉中心軸C1沿一徑向方向而自第三基座部分44a延伸至外側。具體而言，第三安裝突片44b之每一者沿徑向方向自第三基座部分44a至外側凸出。 至少一個第三安裝突片44b相對於旋轉中心軸C1而沿圓周方向自至少一個第二安裝突片43b偏移。至少一個第三安裝突片44b亦相對於旋轉中心軸C1而沿圓周方向自至少一個第一安裝突片42b偏移。換言之，至少一個第一安裝突片42b、至少一個第二安裝突片43b及至少一個第三安裝突片44b相對於旋轉中心軸C1而沿圓周方向自彼此偏移。 此外，至少一個第三安裝突片44b相對於旋轉中心軸C1而沿圓周方向自至少一個第四安裝突片45b (如下文所闡述)偏移。 換言之，至少一個第一安裝突片42b、至少一個第二安裝突片43b、至少一個第三安裝突片44b及至少一個第四安裝突片45b相對於旋轉中心軸C1而沿圓周方向自彼此偏移。 在實施例中，當自軸向方向觀察鏈輪支撐部件40時，第一安裝突片42b中之每一者、第二安裝突片43b中之每一者、第三安裝突片44b中之每一者及第四安裝突片45b中之每一者沿圓周方向自彼此偏移。 第三安裝突片44b中之每一者包含一第三安裝鏜孔44c。第三安裝鏜孔44c沿軸向方向穿過第三安裝突片44b。一第三緊固部件63 (如下文所闡述)插入至第三安裝鏜孔44c中。 第三鏈輪安裝部分44進一步包含一第三自行車面朝內表面44e及在軸向方向上與第三自行車面朝內表面44e相對之一第三自行車面朝外表面44d。換言之，第三自行車面朝內表面44e與第三自行車面朝外表面44d相比關於軸向方向而面向一反向方向。 在其中後鏈輪總成28安裝至車架11之一狀態中，第三自行車面朝外表面44d面向後端11j。 在其中後鏈輪總成28安裝至車架11之一狀態中，第三自行車面朝內表面44e設置於遠離後端11j之一側上。換言之，在該狀態中，第三自行車面朝內表面44e面向後輪19。 如圖6中所展示，第四鏈輪安裝部分45沿軸向方向與第三鏈輪安裝部分44間隔開。 第四鏈輪安裝部分45之至少一部分係相對於旋轉中心軸C1而自第三鏈輪安裝部分44徑向朝內安置。 在實施例中，如圖6及圖7中所展示，第四鏈輪安裝部分45之一總體部分係相對於旋轉中心軸C1而自第三鏈輪安裝部分44徑向朝內安置。 第四鏈輪安裝部分45包含一第四基座部分45a及複數個第四安裝突片45b (至少一個第四安裝突片45b之一實例)。較佳地，第四鏈輪安裝部分45包含一輪轂嚙合輪廓45f。 輪轂嚙合輪廓45f經構形以與後輪轂總成29 (例如鏈輪安裝部件39)嚙合。舉例而言，輪轂嚙合輪廓45f形成為一花鍵孔。 第四基座部分45a形成為一實質上環形形狀。 該複數個第四安裝突片45b係相對於旋轉中心軸C1沿圓周方向有間隔地安置。第四安裝突片45b中之每一者相對於旋轉中心軸C1沿一徑向方向而自第四基座部分45a徑向朝外延伸。具體而言，第四安裝突片45b之每一者沿徑向方向自第四基座部分45a至外側凸出。 至少一個第四安裝突片45b相對於旋轉中心軸C1而沿圓周方向自至少一個第三安裝突片44b偏移。 換言之，至少一第一安裝突片42b、至少一第二安裝突片43b、至少一個第三安裝突片44b及至少一個第四安裝突片45b相對於旋轉中心軸C1而沿圓周方向自彼此偏移。 在實施例中，當自軸向方向觀察鏈輪支撐部件40時，第一安裝突片42b中之每一者、第二安裝突片43b中之每一者、第三安裝突片44b中之每一者及第四安裝突片45b中之每一者沿圓周方向自彼此偏移。 第四安裝突片45b中之每一者包含一第四安裝鏜孔45c。第四安裝鏜孔45c沿軸向方向穿過第四安裝突片45b。一第四緊固部件64 (如下文所闡述)插入至第四安裝鏜孔45c中。 第四鏈輪安裝部分45進一步包含一第四自行車面朝內表面45e及在軸向方向上與第四自行車面朝內表面45e相對之一第四自行車面朝外表面45d。換言之，第四自行車面朝內表面45e與第四自行車面朝外表面45d相比關於軸向方向而面向一反向方向。 在其中後鏈輪總成28安裝至車架11之一狀態中，第四自行車面朝外表面45d面向後端11j。 在其中後鏈輪總成28安裝至車架11之一狀態中，第四自行車面朝內表面45e設置於遠離後端11j之一側上。換言之，在該狀態中，第四自行車面朝內表面45e面向後輪19。 如圖6及圖7中所展示，第一連接部分46互連第一鏈輪安裝部分42與第二鏈輪安裝部分43。較佳地，鏈輪支撐部件40包含複數個第一連接部分46。 第一連接部分46藉由使鏈輪支撐部件40變形而相對於第一鏈輪安裝部分42及第二鏈輪安裝部分43不平行地延伸。 具體而言，該複數個第一連接部分46相對於第一鏈輪安裝部分42之第一基座部分42a及第二鏈輪安裝部分43之第二基座部分43a偏斜。該複數個第一連接部分46與第一鏈輪安裝部分42及第二鏈輪安裝部分43整體地形成為一個一體單件式部件。 該複數個第一連接部分46係沿圓周方向有間隔地安置。當沿著旋轉中心軸C1觀察鏈輪安裝部件39時，該複數個第一連接部分46中之每一者係沿圓周方向安置於毗鄰第二安裝突片43b之間。 在圓周方向上之毗鄰第一連接部分46、第一基座部分42a與第二基座部分43a形成一開口部分S1。當自平行於旋轉中心軸C1之一軸向方向觀察時，第二鏈輪安裝部分43安置於開口部分S1之附近區域中。 如圖6及圖7中所展示，第二連接部分47互連第二鏈輪安裝部分43與第三鏈輪安裝部分44。較佳地，鏈輪支撐部件40包含複數個第二連接部分47。 第二連接部分47藉由使鏈輪支撐部件40變形而相對於第二鏈輪安裝部分43及第三鏈輪安裝部分44不平行地延伸。 具體而言，該複數個第二連接部分47相對於第二鏈輪安裝部分43之第二基座部分43a及第三鏈輪安裝部分44之第三基座部分44a偏斜。該複數個第二連接部分47與第二鏈輪安裝部分43及第三鏈輪安裝部分44整體地形成為一個一體單件式部件。 該複數個第二連接部分47係沿圓周方向有間隔地安置。當沿著旋轉中心軸C1觀察鏈輪安裝部件39時，該複數個第二連接部分47中之每一者係沿圓周方向安置於毗鄰第三安裝突片44b之間。 在圓周方向上之毗鄰第二連接部分47、第二基座部分43a與第三基座部分44a形成一開口部分S2。當自平行於旋轉中心軸C1之一軸向方向觀察時，第三鏈輪安裝部分44安置於開口部分S2之附近區域中。 如圖6及圖7中所展示，第三連接部分48互連第三鏈輪安裝部分44與第四鏈輪安裝部分45。較佳地，鏈輪支撐部件40包含複數個第三連接部分48。 第三連接部分48藉由使鏈輪支撐部件40變形而相對於第三鏈輪安裝部分44及第四鏈輪安裝部分45不平行地延伸。 具體而言，該複數個第三連接部分48相對於第三鏈輪安裝部分44之第三基座部分44a及第四鏈輪安裝部分45之第四基座部分45a偏斜。該複數個第三連接部分48與第三鏈輪安裝部分44及第四鏈輪安裝部分45整體地形成為一個一體單件式部件。 該複數個第三連接部分48係沿圓周方向有間隔地安置。當沿著旋轉中心軸C1觀察鏈輪安裝部件39時，該複數個第三連接部分48中之每一者係沿圓周方向安置於毗鄰第四安裝突片45b之間。 在圓周方向上之毗鄰第三連接部分48、第三基座部分44a與第四基座部分45a形成一開口部分S3。當自平行於旋轉中心軸C1之一軸向方向觀察時，第四鏈輪安裝部分45安置於開口部分S3之附近區域中。 (多個後鏈輪) 如圖2至圖5中所展示，多個後鏈輪41包含一第一鏈輪51、一第二鏈輪52、一第三鏈輪53、一第四鏈輪54、一第五鏈輪55、一第六鏈輪56、一第七鏈輪57及一第八鏈輪58。 -第一鏈輪- 如圖2及圖3中所展示，後鏈輪總成28包括第一鏈輪51，第一鏈輪51係與鏈輪支撐部件40分離之一部件。在實施例中，第一鏈輪51在多個後鏈輪41中係最大鏈輪。第一鏈輪51包含一第一總齒數目。舉例而言，第一總齒數目係45。 如圖2中所展示，第一鏈輪51包含一第一鏈輪主體51a及相對於旋轉中心軸C1自第一鏈輪主體51a徑向朝外延伸之複數個第一鏈輪齒51b。 如圖2及圖3中所展示，第一鏈輪主體51a形成為一實質上環形形狀。該複數個第一鏈輪齒51b與第一鏈輪主體51a整體地形成為一個一體單件式部件。具體而言，該複數個第一鏈輪齒51b沿圓周方向以預定間隔設置於第一鏈輪主體51a之一外周邊部分上。 第一鏈輪主體51a耦合至第一鏈輪安裝部分42之第一自行車面朝內表面42e及第一鏈輪安裝部分42之第一自行車面朝外表面42d (參見圖6及圖7)中之一者。 在實施例中，第一鏈輪主體51a耦合至第一鏈輪安裝部分42之第一自行車面朝內表面42e。舉例而言，第一鏈輪主體51a藉由一第一緊固部件61耦合至第一鏈輪安裝部分42之第一自行車面朝內表面42e。 第一緊固部件61係與鏈輪支撐部件40、第一鏈輪51及第二鏈輪52分離之一部件。舉例而言，第一緊固部件61包含一鉚釘。 具體而言，如圖3中所展示，第一鏈輪主體51a包含複數個第一附接部分51c。該複數個第一附接部分51c係相對於旋轉中心軸C1而沿圓周方向有間隔地安置。 第一附接部分51c中之每一者設置於第一鏈輪主體51a之一徑向內部分上以相對於旋轉中心軸C1沿一徑向方向徑向朝內延伸。 第一附接部分51c中之每一者包含一第一固定鏜孔51d。第一固定鏜孔51d沿軸向方向穿過第一附接部分51c。該複數個第一固定鏜孔51d中之每一者經配置以沿軸向方向與該複數個第一安裝鏜孔42c中之每一者對準。 第一緊固部件61插入至第一安裝鏜孔42c、第一固定鏜孔51d及一第二固定鏜孔52d中(如下文所闡述)。藉此，第一鏈輪主體51a與第二鏈輪主體52a藉由一鉚釘嚙合固定於第一鏈輪安裝部分42上。 -第二鏈輪- 如圖2及圖4中所展示，後鏈輪總成28包括第二鏈輪52，第二鏈輪52係與鏈輪支撐部件40分離之一部件。第二鏈輪52包含小於第一總齒數目之一第二總齒數目。舉例而言，第二總齒數目係40。 第二鏈輪52包含一第二鏈輪主體52a及相對於旋轉中心軸C1自第二鏈輪主體52a徑向朝外延伸之複數個第二鏈輪齒52b。 第二鏈輪主體52a形成為一實質上環形形狀。該複數個第二鏈輪齒52b與第二鏈輪主體52a整體地形成為一個一體單件式部件。具體而言，該複數個第二鏈輪齒52b沿圓周方向以預定間隔設置於第二鏈輪主體52a之一外周邊部分上。 第二鏈輪主體52a耦合至第一鏈輪安裝部分42之第一自行車面朝外表面42d及第一鏈輪安裝部分42之第一自行車面朝內表面42e (參見圖6及圖7)中之另一者。 在實施例中，第二鏈輪主體52a耦合至第一鏈輪安裝部分42之第一自行車面朝外表面42d。舉例而言，第二鏈輪主體52a藉由第一緊固部件61耦合至第一鏈輪安裝部分42之第一自行車面朝外表面42d。 具體而言，如圖4中所展示，第二鏈輪主體52a包含複數個第二附接部分52c。該複數個第二附接部分52c係相對於旋轉中心軸C1而沿圓周方向有間隔地安置。 第二附接部分52c中之每一者設置於第二鏈輪主體52a之一徑向內部分上以相對於旋轉中心軸C1沿一徑向方向徑向朝內延伸。第二附接部分52c中之每一者包含第二固定鏜孔52d。第二固定鏜孔52d沿軸向方向穿過第二附接部分52c。該複數個第二固定鏜孔52d中之每一者經配置以沿軸向方向與該複數個第一安裝鏜孔42c中之每一者對準。 第一緊固部件61插入至第一安裝鏜孔42c、第一固定鏜孔51d及第二固定鏜孔52d中。藉此，第二鏈輪主體52a與第一鏈輪主體51a藉由一鉚釘嚙合固定於第一鏈輪安裝部分42上。 -第三鏈輪- 如圖2及圖5中所展示，後鏈輪總成28包括第三鏈輪53，第三鏈輪53係與鏈輪支撐部件40分離之一部件。第三鏈輪53包含小於第二總齒數目之一第三總齒數目。舉例而言，第三總齒數目係36。 第三鏈輪53包含一第三鏈輪主體53a及相對於旋轉中心軸C1自第三鏈輪主體53a徑向朝外延伸之複數個第三鏈輪齒53b。 第三鏈輪主體53a形成為一實質上環形形狀。 該複數個第三鏈輪齒53b與第三鏈輪主體53a整體地形成為一個一體單件式部件。具體而言，該複數個第三鏈輪齒53b沿圓周方向以預定間隔而設置於第三鏈輪主體53a之一外周邊部分上。 第三鏈輪主體53a耦合至第二鏈輪安裝部分43之第二自行車面朝內表面43e及第二鏈輪安裝部分43之第二自行車面朝外表面43d (參見圖6及圖7)中之一者。 在實施例中，第三鏈輪主體53a耦合至第二鏈輪安裝部分43之第二自行車面朝內表面43e。 舉例而言，第三鏈輪主體53a藉由第二緊固部件62耦合至第二鏈輪安裝部分43之第二自行車面朝內表面43e。 第二緊固部件62係與鏈輪支撐部件40、第三鏈輪53及第四鏈輪54分離之一部件。舉例而言，第二緊固部件62包含一鉚釘。 具體而言，如圖5中所展示，第三鏈輪主體53a包含複數個第三附接部分53c。該複數個第三附接部分53c係相對於旋轉中心軸C1而沿圓周方向有間隔地安置。 第三附接部分53c中之每一者設置於第三鏈輪主體53a之一徑向內部分上以相對於旋轉中心軸C1沿一徑向方向徑向朝內延伸。具體而言，第三附接部分53c沿徑向方向自第三鏈輪主體53a之徑向內部分至內側凸出。 第三附接部分53c中之每一者包含一第三固定鏜孔(未展示)。第三固定鏜孔沿軸向方向穿過第三附接部分53c。該複數個第三固定鏜孔中之每一者經配置以沿軸向方向與該複數個第二安裝鏜孔43c中之每一者對準。 第二緊固部件62插入至第二安裝鏜孔43c、第三固定鏜孔(未展示)及第四固定鏜孔54d中(如下文所闡述)。藉此，第三鏈輪主體53a與第四鏈輪主體54a藉由一鉚釘嚙合固定於第二鏈輪安裝部分43上。 -第四鏈輪- 如圖2及圖4中所展示，後鏈輪總成28包括第四鏈輪54，第四鏈輪54係與鏈輪支撐部件40分離之一部件。第四鏈輪54包含小於第三總齒數目之一第四總齒數目。舉例而言，第四總齒數目係32。 第四鏈輪54包含一第四鏈輪主體54a及相對於旋轉中心軸C1自第四鏈輪主體54a徑向朝外延伸之複數個第四鏈輪齒54b。 第四鏈輪主體54a形成為一實質上環形形狀。該複數個第四鏈輪齒54b與第四鏈輪主體54a整體地形成為一個一體單件式部件。具體而言，該複數個第四鏈輪齒54b沿圓周方向以預定間隔設置於第四鏈輪主體54a之一外周邊部分上。 第四鏈輪主體54a耦合至第二鏈輪安裝部分43之第二自行車面朝外表面43d及第二鏈輪安裝部分43之第二自行車面朝內表面43e (參見圖6及圖7)中之另一者。 在實施例中，第四鏈輪主體54a耦合至第二鏈輪安裝部分43之第二自行車面朝外表面43d。舉例而言，第四鏈輪主體54a藉由第二緊固部件62耦合至第二鏈輪安裝部分43之第二自行車面朝外表面43d。 具體而言，第四鏈輪主體54a包含如圖4中所圖解說明之複數個第四附接部分54c。該複數個第四附接部分54c係相對於旋轉中心軸C1而沿圓周方向有間隔地安置。 第四附接部分54c中之每一者設置於第四鏈輪主體54a之一徑向內部分上以相對於旋轉中心軸C1沿一徑向方向徑向朝內延伸。第四附接部分54c中之每一者包含第四固定鏜孔54d。第四固定鏜孔54d沿軸向方向穿過第四附接部分54c。該複數個第四固定鏜孔54d中之每一者經配置以沿軸向方向與該複數個第二安裝鏜孔43c中之每一者對準。 第二緊固部件62插入至第二安裝鏜孔43c、第三固定鏜孔(未展示)及第四固定鏜孔54d中。藉此，第四鏈輪主體54a與第三鏈輪主體53a藉由一鉚釘嚙合固定於第二鏈輪安裝部分43上。 -第五鏈輪- 如圖2及圖5中所展示，後鏈輪總成28包括第五鏈輪55，第五鏈輪55係與鏈輪支撐部件40分離之一部件。第五鏈輪55包含小於第四總齒數目之一第五總齒數目。舉例而言，第五總齒數目係28。 第五鏈輪55包含一第五鏈輪主體55a及相對於旋轉中心軸C1自第五鏈輪主體55a徑向朝外延伸之複數個第五鏈輪齒55b。 第五鏈輪主體55a形成為一實質上環形形狀。 該複數個第五鏈輪齒55b與第五鏈輪主體55a整體地形成為一個一體單件式部件。具體而言，該複數個第五鏈輪齒55b沿圓周方向以預定間隔設置於第五鏈輪主體55a之一外周邊部分上。 第五鏈輪主體55a耦合至第三鏈輪安裝部分44之第三自行車面朝內表面44e及第三鏈輪安裝部分44之第三自行車面朝外表面44d (參見圖6及圖7)中之一者。 在實施例中，第五鏈輪主體55a耦合至第三鏈輪安裝部分44之第三自行車面朝內表面44e。舉例而言，第五鏈輪主體55a藉由第三緊固部件63耦合至第三鏈輪安裝部分44之第三自行車面朝內表面44e。 第三緊固部件63係與鏈輪支撐部件40、第五鏈輪55及第六鏈輪56分離之一部件。舉例而言，第三緊固部件63包含一鉚釘。 具體而言，如圖5中所展示，第五鏈輪主體55a包含複數個第五附接部分55c。該複數個第五附接部分55c係相對於旋轉中心軸C1而沿圓周方向有間隔地安置。 第五附接部分55c中之每一者設置於第五鏈輪主體55a之一徑向內部分上以相對於旋轉中心軸C1沿一徑向方向徑向朝內延伸。具體而言，第五附接部分55c沿徑向方向自第五鏈輪主體55a之徑向內部分至內側凸出。 第五附接部分55c中之每一者包含第五固定鏜孔(未展示)。第五固定鏜孔沿軸向方向穿過第五附接部分55c。該複數個第五固定鏜孔中之每一者經配置以沿軸向方向與該複數個第三安裝鏜孔44c中之每一者對準。 第三緊固部件63插入至第三安裝鏜孔44c、第五固定鏜孔(未展示)及一第六固定鏜孔56d中(如下文所闡述)。藉此，第五鏈輪主體55a與一第六鏈輪主體56a (如下文所闡述)藉由一鉚釘嚙合固定於第三鏈輪安裝部分44上。 -第六鏈輪- 如圖2及圖4中所展示，後鏈輪總成28包括第六鏈輪56，第六鏈輪56係與鏈輪支撐部件40分離之一部件。第六鏈輪56包含小於第五總齒數目之一第六總齒數目。舉例而言，第六總齒數目係24。 第六鏈輪56包含第六鏈輪主體56a及相對於旋轉中心軸C1自第六鏈輪主體56a徑向朝外延伸之複數個第六鏈輪齒56b。 第六鏈輪主體56a形成為一實質上環形形狀。該複數個第六鏈輪齒56b與第六鏈輪主體56a整體地形成為一個一體單件式部件。具體而言，該複數個第六鏈輪齒56b沿圓周方向以預定間隔設置於第六鏈輪主體56a之一外周邊部分上。 第六鏈輪主體56a耦合至第三鏈輪安裝部分44之第三自行車面朝內表面44e及第三鏈輪安裝部分44之第三自行車面朝外表面44d (參見圖6及圖7)中之另一者。 在實施例中，第六鏈輪主體56a耦合至第三鏈輪安裝部分44之第三自行車面朝外表面44d。舉例而言，第六鏈輪主體56a藉由第三緊固部件63耦合至第三鏈輪安裝部分44之第三自行車面朝外表面44d。 具體而言，如圖4中所展示，第六鏈輪主體56a包含複數個第六附接部分56c。該複數個第六附接部分56c係相對於旋轉中心軸C1而沿圓周方向有間隔地安置。 第六附接部分56c中之每一者設置於第六鏈輪主體56a之一徑向內部分上以相對於旋轉中心軸C1沿一徑向方向徑向朝內延伸。第六附接部分56c中之每一者包含第六固定鏜孔56d。第六固定鏜孔56d沿軸向方向穿過第六附接部分56c。該複數個第六固定鏜孔56d中之每一者經配置以沿軸向方向與該複數個第三安裝鏜孔44c中之每一者對準。 第三緊固部件63插入至第三安裝鏜孔44c、第五固定鏜孔(未展示)及第六固定鏜孔56d中。藉此，第六鏈輪主體56a與第五鏈輪主體55a藉由一鉚釘嚙合固定於第三鏈輪安裝部分44上。 -第七鏈輪- 如圖2及圖5中所展示，後鏈輪總成28包括第七鏈輪57，第七鏈輪57係與鏈輪支撐部件40分離之一部件。第七鏈輪57包含小於第六總齒數目之一第七總齒數目。舉例而言，第七總齒數目係21。 第七鏈輪57包含一第七鏈輪主體57a及相對於旋轉中心軸C1自第七鏈輪主體57a徑向朝外延伸之複數個第七鏈輪齒57b。 第七鏈輪主體57a形成為一實質上環形形狀。 該複數個第七鏈輪齒57b與第七鏈輪主體57a整體地形成為一個一體單件式部件。具體而言，該複數個第七鏈輪齒57b沿圓周方向以預定間隔設置於第七鏈輪主體57a之一外周邊部分上。 第七鏈輪主體57a耦合至第四鏈輪安裝部分45之第四自行車面朝內表面45e及第四鏈輪安裝部分45之第四自行車面朝外表面45d (參見圖6及圖7)中之一者。 在實施例中，第七鏈輪主體57a耦合至第四鏈輪安裝部分45之第四自行車面朝內表面45e。舉例而言，第七鏈輪主體57a藉由第四緊固部件64耦合至第四鏈輪安裝部分45之第四自行車面朝內表面45e。 第四緊固部件64係與鏈輪支撐部件40、第七鏈輪57及第八鏈輪58分離之一部件。舉例而言，第四緊固部件64包含一鉚釘。 具體而言，如圖5中所展示，第七鏈輪主體57a包含複數個第七附接部分57c。該複數個第七附接部分57c係相對於旋轉中心軸C1而沿圓周方向有間隔地安置。 第七附接部分57c中之每一者設置於第七鏈輪主體57a之一徑向內部分上以相對於旋轉中心軸C1沿一徑向方向徑向朝內延伸。具體而言，第七附接部分57c沿徑向方向自第七鏈輪主體57a之徑向內部分至內側凸出。 第七附接部分57c中之每一者包含一第七固定鏜孔(未展示)。第七固定鏜孔沿軸向方向穿過第七附接部分57c。該複數個第七固定鏜孔中之每一者經配置以沿軸向方向與該複數個第四安裝鏜孔45c中之每一者對準。 第四緊固部件64插入至第四安裝鏜孔45c、第七固定鏜孔(未展示)及一第八固定鏜孔58d中(如下文所闡述)。藉此，第七鏈輪主體57a與第八鏈輪主體58a(如下文所闡述)藉由一鉚釘嚙合固定於第四鏈輪安裝部分45上。 -第八鏈輪- 如圖2及圖4中所展示，後鏈輪總成28包括第八鏈輪58，第八鏈輪58係與鏈輪支撐部件40分離之一部件。第八鏈輪58包含小於第七總齒數目之一第八總齒數目。舉例而言，第八總齒數目係18。 第八鏈輪58包含一第八鏈輪主體58a及相對於旋轉中心軸C1自第八鏈輪主體58a徑向朝外延伸之複數個第八鏈輪齒58b。 第八鏈輪主體58a形成為一實質上環形形狀。該複數個第八鏈輪齒58b與第八鏈輪主體58a整體地形成為一個一體單件式部件。具體而言，該複數個第八鏈輪齒58b沿圓周方向以預定間隔設置於第八鏈輪主體58a之一外周邊部分上。 第八鏈輪主體58a耦合至第四鏈輪安裝部分45之第四自行車面朝內表面45e及第四鏈輪安裝部分45之第四自行車面朝外表面45d (參見圖6及圖7)中之另一者。 在實施例中，第八鏈輪主體58a耦合至第四鏈輪安裝部分45之第四自行車面朝外表面45d。舉例而言，第八鏈輪主體58a藉由第四緊固部件64耦合至第四鏈輪安裝部分45之第二自行車面朝外表面45d。 具體而言，第八鏈輪主體58a包含如圖4中所圖解說明之複數個第八附接部分58c。該複數個第八附接部分58c係相對於旋轉中心軸C1而沿圓周方向有間隔地安置。 第八附接部分58c中之每一者設置於第八鏈輪主體58a之一徑向內部分上以相對於旋轉中心軸C1沿一徑向方向徑向朝內延伸。第八附接部分58c中之每一者包含第八固定鏜孔58d。第八固定鏜孔58d沿軸向方向穿過第八附接部分58c。該複數個第八固定鏜孔58d中之每一者經配置以沿軸向方向與該複數個第四安裝鏜孔45c中之每一者對準。 第四緊固部件64插入至第四安裝鏜孔45c、第七固定鏜孔(未展示)及第八固定鏜孔58d中。藉此，第八鏈輪主體58a與第七鏈輪主體57a藉由一鉚釘嚙合固定於第四鏈輪安裝部分45上。 ＜＜多個後鏈輪至鏈輪安裝部件之安設＞＞ 第一，將第一鏈輪51之第一附接部分51c分別鄰接至第一鏈輪安裝部分42之第一安裝突片42b之第一自行車面朝內表面42e。 然後，將第二鏈輪52之第二附接部分52c分別鄰接至第一鏈輪安裝部分42之第一安裝突片42b之第一自行車面朝外表面42d。 在此狀態中，藉由第一緊固部件61 (舉例而言，鉚釘)固定第一附接部分51c、第二附接部分52c及第一安裝突片42b。 藉此，以如上文所闡述之一鉚釘嚙合將第一鏈輪51及第二鏈輪52固定於第一鏈輪安裝部分42上。 第二，使第三鏈輪53之該複數個第三附接部分53c中之每一者朝向第一鏈輪安裝部分42穿過在圓周方向上之毗鄰第二安裝突片43b之間的一空間。 然後，沿圓周方向旋轉第三鏈輪53。將第三鏈輪53之第三附接部分53c分別鄰接至第二鏈輪安裝部分43之第二安裝突片43b之第二自行車面朝內表面43e。 然後，將第四鏈輪54之第四附接部分54c分別鄰接至第二鏈輪安裝部分43之第二安裝突片43b之第二自行車面朝外表面43d。 在此狀態中，藉由第二緊固部件62 (舉例而言，鉚釘)固定第三附接部分53c、第四附接部分54c及第二安裝突片43b。 藉此，以如上文所闡述之一鉚釘嚙合將第三鏈輪53及第四鏈輪54固定於第二鏈輪安裝部分43上。 第三，使第五鏈輪55之該複數個第五附接部分55c中之每一者朝向第二鏈輪安裝部分43穿過在圓周方向上之毗鄰第三安裝突片44b之間的一空間。 然後，沿圓周方向旋轉第五鏈輪55。將第五鏈輪55之第五附接部分55c分別鄰接至第三鏈輪安裝部分44之第三安裝突片44b之第三自行車面朝內表面44e。 然後，將第六鏈輪56之第六附接部分56c分別鄰接至第三鏈輪安裝部分44之第三安裝突片44b之第三自行車面朝外表面44d。 在此狀態中，藉由第三緊固部件63(舉例而言，鉚釘)固定第五附接部分55c、第六附接部分56c及第三安裝突片44b。 藉此，以如上文所闡述之一鉚釘嚙合將第五鏈輪55及第六鏈輪56固定於第三鏈輪安裝部分44上。 最後，使第七鏈輪57之該複數個第七附接部分57c中之每一者朝向第三鏈輪安裝部分44穿過在圓周方向上之毗鄰第四安裝突片45b之間的一空間。 然後，沿圓周方向旋轉第七鏈輪57。將第七鏈輪57之第七附接部分57c分別鄰接至第四鏈輪安裝部分45之第四安裝突片45b之第四自行車面朝內表面45e。 然後，將第八鏈輪58之第八附接部分58c分別鄰接至第四鏈輪安裝部分45之第四安裝突片45b之第四自行車面朝外表面45d。 在此狀態中，藉由第四緊固部件64 (舉例而言，鉚釘)固定第七附接部分57c、第八附接部分58c及第四安裝突片45b。 藉此，以如上文所闡述之一鉚釘嚙合將第七鏈輪57及第八鏈輪58固定於第四鏈輪安裝部分45上。 藉由將多個後鏈輪41安設至鏈輪安裝部件39，由單個金屬板製成之鏈輪支撐部件40支撐第一後鏈輪至第八後鏈輪51、52、53、54、55、56、57、58。 以此，後鏈輪總成28能夠減小重量且提高生產效率，此乃因鏈輪支撐部件40之數目小於習用鏈輪安裝部件之數目且鏈輪支撐部件40容易形成。 此外，後鏈輪總成28能夠改良材料之選擇靈活性，此乃因鏈輪支撐部件40係與第一後鏈輪至第八後鏈輪51、52、53、54、55、56、57、58分離之一部件。 其他實施例 (A)在實施例中，以如下一實例進行闡釋：鏈輪支撐部件40之第四鏈輪安裝部分45可具有一輪轂嚙合輪廓45f。 如圖8中所展示，不僅鏈輪支撐部件40之第四鏈輪安裝部分45而且第一鏈輪51亦可具有一輪轂嚙合輪廓42f。 在此情形中，第一鏈輪51之輪轂嚙合輪廓42f形成為一花鍵孔。藉此，後鏈輪總成28藉由第一鏈輪51之輪轂嚙合輪廓42f及鏈輪支撐部件40之第四鏈輪安裝部分45之輪轂嚙合輪廓45f與後輪轂總成29 (例如鏈輪安裝部件39)嚙合。 (B)在實施例中，以如下一實例進行闡釋：第一至第四緊固部件61、62、63、64中之每一者包含一鉚釘。或者，第一至第四緊固部件61、62、63、64中之至少一者可包含黏合劑。舉例而言，第一至第四緊固部件61、62、63、64中之每一者可包含黏合劑。 術語之一般性解釋 在理解本發明之範疇時，如本文中所使用之術語「包括(comprising)」及其派生詞意欲係開放式術語，其指定所陳述特徵、元件、組件、群組、整數及/或步驟之存在，但並不排除其他未陳述特徵、元件、組件、群組、整數及/或步驟之存在。前述內容亦適用於具有類似意義之措辭，諸如「包含(including)」、「具有(having)」及其派生詞。此外，術語「部分(part)」、「區段」、「部分(portion)」，「部件」或「元件」在以單數形式使用時可具有一單個部分或複數個部分之雙重含義。此外，在本文中用於闡述以上實施例時，以下方向性術語「朝前」、「朝後」、「上邊」、「朝下」、「垂直」、「水平」、「下邊」、「橫向」、「朝內」及「朝外」以及任何其他類似方向性術語係指在多重自行車鏈輪總成安裝至一自行車之一狀態中該多重自行車鏈輪總成之彼等方向。因此，如用於闡述本發明技術之此等術語應解釋為相對於多重自行車鏈輪總成。 如本文中用於闡述一裝置之一組件、區段或部分之術語「經構形」暗示存在用以執行一期望功能的裝置之其他未主張或未提及組件、區段、部件或部分。 如本文中所使用的諸如「實質上(substantially)」、「大約(about)」及「約(approximately)」等程度術語意指所修飾術語之一合理偏差量使得最終結果不會顯著改變。 雖然僅選擇選定實施例來圖解說明本發明技術，但熟習此項技術者將依據本發明明瞭，可在不背離如隨附申請專利範圍中所界定之技術範疇之情況下在本文中做出各種改變及修改。舉例而言，可視需要及/或期望改變各個組件之大小、形狀、位置或定向。經展示為彼此直接連接或接觸之組件可具有安置於其間之中間結構。一個元件之功能可由兩個元件來執行，且反之亦然。一項實施例之結構及功能可沿用於另一實施例中。所有優點未必同時呈現於一特定實施例中。不同於先前技術、單獨或結合其他特徵之每一個特徵亦應視為對本申請人其他技術(包含由此(等)特徵體現之結構性及/或功能性概念)之一單獨說明。因此，僅出於圖解說明之目的而非出於限制由隨附申請專利範圍及其等效內容所界定之技術之目的而提供根據本發明技術之實施例之前述說明。Selected embodiments of the present technology will be explained with reference to the drawings. Those skilled in the art will be apparent from this disclosure. The following description of the embodiments of the present invention is provided for purposes of illustration and description  Embodiment <<General Configuration of a Bicycle>> As shown in Fig. 1, A bicycle 1 includes a bicycle chain 9, a frame 11 (an example of a bicycle frame), First hand 13, a front hub assembly 15, Front wheel 17 and rear wheel 19, A rear derailleur 26 and a drive system 25.  The frame 11 includes a frame body 11a. The frame body 11a includes a top tube 11c, a head tube 11d, a tube 11e, a lower tube 11f, a pair of chain rods 11g, A pair of seat bars 11h and a bottom bracket suspension portion 12. A connecting portion of the seat stay 11h and the chain stay 11g is hereinafter described as a pair of rear ends 11j. A front fork 11b is rotatably attached to the head tube 11d of the frame main body 11a.  The handle 13 is fixed to the front fork 11b. The front hub assembly 15 is supported on the front fork 11b. The front wheel 17 is rotatably attached to the front fork 11b via the front hub assembly 15. The rear wheel 19 is rotatably attached to a rear portion of the frame 11 (frame body 11a) via a rear hub assembly 29. A front tire 17a is attached to the front wheel 17. A rear tire 19a is attached to the rear wheel 19.  The rear derailleur 26 moves the bicycle chain 9 from one of the rear sprocket wheels of the rear sprocket assembly 28 to one of the rear sprocket assemblies 28 by attachment to a shifting operating device 24, for example, to the right of the handle 13. Rear sprocket. The rear sprocket is shown in Figure 1 by a simplified description. A rear derailleur 26, for example, is attached to the rear end 11j of the frame 11.  <<The configuration of the drive system>> As shown in Figure 1, The drive system 25 mainly includes a curved wheel assembly 27, A rear sprocket assembly 28 (an example of a multiple rear sprocket assembly) and a rear hub assembly 29.  <curved wheel assembly> as shown in Figure 1, The curved wheel assembly 27 is rotatably supported on a lower portion of the frame 11 (for example, On the bottom bracket suspension 12). The curved wheel assembly 27 mainly includes a curved wheel axle (not shown), a right crank arm 33, A left crank arm (not shown) and a front sprocket 35.  The curved wheel assembly 27 is substantially identical to a conventional curved wheel assembly. therefore, The configuration of the crank wheel assembly 27 is briefly illustrated in the embodiment.  The curved wheel axle is rotatably supported on the bottom bracket suspension 12. Both ends of the curved wheel axle are attached to one end of the right crank arm 33 and the left crank arm, respectively. A pair of pedals 34 are attached to the other ends of the right crank arm 33 and the left crank arm, respectively. The front sprocket 35 is attached to the right crank arm 33 so as to be rotatable integrally with the right crank arm 33. The front sprocket 35 can be constructed of two or three front sprockets.  <rear hub assembly> as shown in Figure 1, The rear hub assembly 29 is mounted to the rear portion of the frame 11 (for example, On the back end 11j). The rear hub assembly 29 is substantially identical to a conventional rear hub assembly. therefore, The configuration of the rear hub assembly 29 is briefly illustrated in the embodiment.  The rear hub assembly 29 is configured to mount the rear sprocket assembly 28 thereon. The rear hub assembly 29 mainly includes a rear hub axle 51, A rear hub housing (not shown) and a sprocket mounting member 39 (see Figure 2).  Both ends of the rear hub axle 51 are supported on the pair of rear ends 11j. The rear hub axle 51 is disposed in the hub housing body. The rear hub shell is formed in a substantially tubular shape. The rear hub shell is rotatably supported on the rear hub axle 51 via bearings.  The sprocket mounting member 39 is formed in a substantially tubular shape. The sprocket mounting member 39 is rotatably supported on the rear hub axle 51 via bearings.  The sprocket mounting member 39 is mounted to the rear hub housing, In order to rotate integrally with the rear hub shell about a central axis of rotation C1.  The sprocket mounting member 39 supports the rear sprocket assembly 28 for rotation integrally with the rear sprocket assembly 28 about the central axis of rotation C1.  <After sprocket assembly> As shown in Figures 1 to 3, The rear sprocket assembly 28 (i.e., the multiple rear sprocket assembly 28) includes a central axis of rotation C1. The rear sprocket assembly 28 is supported on the rear hub assembly 29. The rear sprocket assembly 28 rotates integrally with the rear hub assembly 29 (e.g., the rear hub housing and the sprocket mounting member 39) about the central axis of rotation C1.  As shown in Figures 2 to 7, The rear sprocket assembly 28 includes a sprocket support member 40 and a plurality of rear sprockets 41.  (Sprocket Support Member) The sprocket support member 40 is made of a single metal plate. As used herein, The term "single metal plate" is intended to mean a metal material (such as aluminum, Terminology of an integral one-piece plate member made of iron and titanium. therefore, The term "single metal plate" does not encompass one of the plate members including, for example, a binder, A fastener or the like is attached to one of a plurality of pieces of each other. Each portion of the sprocket support member 40 (as set forth below) is formed by deforming a single metal sheet.  As shown in Figures 6 and 7, The sprocket support member 40 includes a first sprocket mounting portion 42 a second sprocket mounting portion 43, a third sprocket mounting portion 44, A fourth sprocket mounting portion 45. In addition, The sprocket support member 40 further includes at least one first connecting portion 46 (an example of a first connecting portion), At least one second connecting portion 47 (an example of a second connecting portion) and at least one third connecting portion 48 (an example of a third connecting portion). Preferably, The sprocket support member 40 includes a plurality of first connecting portions 46, A plurality of second connecting portions 47 and a plurality of third connecting portions 48.  As shown in Figure 6, The second sprocket mounting portion 43 is spaced apart from the first sprocket mounting portion 42 in an axial direction parallel to the central axis of rotation C1.  In addition, At least a portion of the first sprocket mounting portion 42 is disposed radially outward from the second sprocket mounting portion 43 with respect to the central axis of rotation C1.  In an embodiment, As shown in Figures 6 and 7, One of the entire portions of the first sprocket mounting portion 42 is disposed radially outward from the second sprocket mounting portion 43 with respect to the central axis of rotation C1.  The first sprocket mounting portion 42 includes a first base portion 42a and a plurality of first mounting tabs 42b (an example of at least one first mounting tab 42b).  The first base portion 42a is formed in a substantially annular shape.  The plurality of first mounting tabs 42b are disposed at intervals in a circumferential direction with respect to the central axis of rotation C1. Each of the first mounting tabs 42b extends radially outward from the first base portion 42a in a radial direction with respect to the central axis of rotation C1. in particular, Each of the first mounting tabs 42b protrudes from the first base portion 42a to the outside in the radial direction.  The at least one first mounting tab 42b is offset from the at least one second mounting tab 43b (as set forth below) in a circumferential direction relative to the central axis of rotation C1. In an embodiment, When the sprocket support member 40 is viewed from the axial direction, Each of the first mounting tabs 42b is offset from each of the second mounting tabs 43b in the circumferential direction.  Each of the first mounting tabs 42b includes a first mounting bore 42c. The first mounting bore 42c passes through the first mounting tab 42b in the axial direction. A first fastening component 61 (as set forth below) is inserted into the first mounting bore 42c.  The first sprocket mounting portion 42 further includes a first bicycle facing inner surface 42e and a first bicycle facing outward surface 42d opposite the first bicycle facing inner surface 42e in the axial direction. In other words, The first bicycle facing inner surface 42e faces a reverse direction with respect to the axial direction as compared to the first bicycle facing outer surface 42d.  The phrase "outward facing surface" indicates a surface facing away from the plane of the bicycle frame axis which is one of the axes perpendicular to the central axis of rotation C1 and passing through one of the axles of the frame 11. The phrase "facing the inner surface" indicates one surface facing the axis plane of the bicycle frame.  In a state in which the rear sprocket assembly 28 is mounted to one of the frames 11, The first bicycle facing outward surface 42d faces the rear end 11j.  In a state in which the rear sprocket assembly 28 is mounted to one of the frames 11, The first bicycle facing inner surface 42e is disposed on a side away from the rear end 11j. In other words, In this state, The first bicycle faces the inner wheel 42e facing the rear wheel 19.  As shown in Figure 6, The second sprocket mounting portion 43 is spaced apart from the first sprocket mounting portion 42 in an axial direction parallel to the central axis of rotation C1. in particular, The second sprocket mounting portion 43 is disposed between the first sprocket mounting portion 42 and the third sprocket mounting portion 44 in the axial direction.  In addition, At least a portion of the second sprocket mounting portion 43 is disposed radially outward from the third sprocket mounting portion 44 with respect to the central axis of rotation C1.  In an embodiment, As shown in Figures 6 and 7, One of the entire portions of the second sprocket mounting portion 43 is disposed radially outward from the third sprocket mounting portion 44 with respect to the central axis of rotation C1.  The second sprocket mounting portion 43 includes a second base portion 43a and a plurality of second mounting tabs 43b (an example of at least one second mounting tab 43b).  The second base portion 43a is formed in a substantially annular shape.  The plurality of second mounting tabs 43b are disposed at intervals in the circumferential direction with respect to the central axis of rotation C1. Each of the second mounting tabs 43b extends radially outward from the second base portion 43a in a radial direction with respect to the central axis of rotation C1. in particular, Each of the second mounting tabs 43b protrudes from the second base portion 43a to the outside in the radial direction.  The at least one second mounting tab 43b is offset from the at least one first mounting tab 42b in the circumferential direction with respect to the central axis of rotation C1.  In addition, The at least one second mounting tab 43b is offset from the at least one third mounting tab 44b (as explained below) in a circumferential direction relative to the central axis of rotation C1.  In an embodiment, When the sprocket support member 40 is viewed from the axial direction, Each of the second mounting tabs 43b is offset in a circumferential direction from each of the first mounting tabs 42b and each of the third mounting tabs 44b.  Each of the second mounting tabs 43b includes a second mounting bore 43c. The second mounting bore 43c passes through the second mounting tab 43b in the axial direction. A second fastening member 62 (as set forth below) is inserted into the second mounting bore 43c.  The second sprocket mounting portion 43 further includes a second bicycle facing inner surface 43e and a second bicycle facing outward surface 43d opposite the second bicycle facing inner surface 43e in the axial direction. In other words, The second bicycle facing inner surface 43e faces a reverse direction with respect to the axial direction as compared to the second bicycle facing outer surface 43d.  In a state in which the rear sprocket assembly 28 is mounted to one of the frames 11, The second bicycle facing outward surface 43d faces the rear end 11j.  In a state in which the rear sprocket assembly 28 is mounted to one of the frames 11, The second bicycle facing inner surface 43e is disposed on a side away from the rear end 11j. In other words, In this state, The second bicycle faces the rear wheel 19 toward the inner surface 43e.  As shown in Figure 6, The third sprocket mounting portion 44 is spaced apart from the second sprocket mounting portion 43 in the axial direction. in particular, The third sprocket mounting portion 44 is disposed between the second sprocket mounting portion 43 and the fourth sprocket mounting portion 45 in the axial direction.  At least a portion of the third sprocket mounting portion 44 is disposed radially outward from the fourth sprocket mounting portion 45 with respect to the central axis of rotation C1.  In an embodiment, As shown in Figures 6 and 7, One of the entire portions of the third sprocket mounting portion 44 is disposed radially outward from the fourth sprocket mounting portion 45 with respect to the central axis of rotation C1.  The third sprocket mounting portion 44 includes a third base portion 44a and a plurality of third mounting tabs 44b (an example of at least one third mounting tab 44b).  The third base portion 44a is formed in a substantially annular shape.  The plurality of third mounting tabs 44b are disposed at intervals in the circumferential direction with respect to the central axis of rotation C1. Each of the third mounting tabs 44b extends from the third base portion 44a to the outside in a radial direction with respect to the central axis of rotation C1. in particular, Each of the third mounting tabs 44b protrudes from the third base portion 44a to the outside in the radial direction.  The at least one third mounting tab 44b is offset from the at least one second mounting tab 43b in the circumferential direction with respect to the central axis of rotation C1. The at least one third mounting tab 44b is also offset from the at least one first mounting tab 42b in the circumferential direction relative to the central axis of rotation C1. In other words, At least one first mounting tab 42b, The at least one second mounting tab 43b and the at least one third mounting tab 44b are offset from each other in the circumferential direction with respect to the central axis of rotation C1.  In addition, The at least one third mounting tab 44b is offset from the at least one fourth mounting tab 45b (as set forth below) in a circumferential direction relative to the central axis of rotation C1.  In other words, At least one first mounting tab 42b, At least one second mounting tab 43b, The at least one third mounting tab 44b and the at least one fourth mounting tab 45b are offset from each other in the circumferential direction with respect to the central axis of rotation C1.  In an embodiment, When the sprocket support member 40 is viewed from the axial direction, Each of the first mounting tabs 42b, Each of the second mounting tabs 43b, Each of the third mounting tabs 44b and each of the fourth mounting tabs 45b are offset from each other in the circumferential direction.  Each of the third mounting tabs 44b includes a third mounting tab 44c. The third mounting bore 44c passes through the third mounting tab 44b in the axial direction. A third fastening member 63 (as set forth below) is inserted into the third mounting bore 44c.  The third sprocket mounting portion 44 further includes a third bicycle facing inner surface 44e and a third bicycle facing outward surface 44d opposite the third bicycle facing inner surface 44e in the axial direction. In other words, The third bicycle facing inner surface 44e faces a reverse direction with respect to the axial direction as compared to the third bicycle facing outer surface 44d.  In a state in which the rear sprocket assembly 28 is mounted to one of the frames 11, The third bicycle facing outward surface 44d faces the rear end 11j.  In a state in which the rear sprocket assembly 28 is mounted to one of the frames 11, The third bicycle facing inner surface 44e is disposed on a side away from the rear end 11j. In other words, In this state, The third bicycle faces the inner wheel 44e facing the rear wheel 19.  As shown in Figure 6, The fourth sprocket mounting portion 45 is spaced apart from the third sprocket mounting portion 44 in the axial direction.  At least a portion of the fourth sprocket mounting portion 45 is disposed radially inward from the third sprocket mounting portion 44 with respect to the central axis of rotation C1.  In an embodiment, As shown in Figures 6 and 7, One of the overall portions of the fourth sprocket mounting portion 45 is disposed radially inward from the third sprocket mounting portion 44 with respect to the central axis of rotation C1.  The fourth sprocket mounting portion 45 includes a fourth base portion 45a and a plurality of fourth mounting tabs 45b (an example of at least one fourth mounting tab 45b). Preferably, The fourth sprocket mounting portion 45 includes a hub engagement profile 45f.  The hub engagement profile 45f is configured to engage the rear hub assembly 29 (e.g., sprocket mounting member 39). For example, The hub engagement contour 45f is formed as a splined hole.  The fourth base portion 45a is formed in a substantially annular shape.  The plurality of fourth mounting tabs 45b are disposed at intervals in the circumferential direction with respect to the central axis of rotation C1. Each of the fourth mounting tabs 45b extends radially outward from the fourth base portion 45a in a radial direction with respect to the central axis of rotation C1. in particular, Each of the fourth mounting tabs 45b protrudes from the fourth base portion 45a to the outside in the radial direction.  The at least one fourth mounting tab 45b is offset from the at least one third mounting tab 44b in the circumferential direction with respect to the central axis of rotation C1.  In other words, At least one first mounting tab 42b, At least one second mounting tab 43b, The at least one third mounting tab 44b and the at least one fourth mounting tab 45b are offset from each other in the circumferential direction with respect to the central axis of rotation C1.  In an embodiment, When the sprocket support member 40 is viewed from the axial direction, Each of the first mounting tabs 42b, Each of the second mounting tabs 43b, Each of the third mounting tabs 44b and each of the fourth mounting tabs 45b are offset from each other in the circumferential direction.  Each of the fourth mounting tabs 45b includes a fourth mounting bore 45c. The fourth mounting bore 45c passes through the fourth mounting tab 45b in the axial direction. A fourth fastening member 64 (as set forth below) is inserted into the fourth mounting bore 45c.  The fourth sprocket mounting portion 45 further includes a fourth bicycle facing inner surface 45e and a fourth bicycle facing outward surface 45d opposite the fourth bicycle facing inner surface 45e in the axial direction. In other words, The fourth bicycle facing inner surface 45e faces a reverse direction with respect to the axial direction as compared with the fourth bicycle facing outer surface 45d.  In a state in which the rear sprocket assembly 28 is mounted to one of the frames 11, The fourth bicycle facing outward surface 45d faces the rear end 11j.  In a state in which the rear sprocket assembly 28 is mounted to one of the frames 11, The fourth bicycle facing inner surface 45e is disposed on a side away from the rear end 11j. In other words, In this state, The fourth bicycle faces the inner wheel 45e facing the rear wheel 19.  As shown in Figures 6 and 7, The first connecting portion 46 interconnects the first sprocket mounting portion 42 and the second sprocket mounting portion 43. Preferably, The sprocket support member 40 includes a plurality of first connecting portions 46.  The first connecting portion 46 extends non-parallel with respect to the first sprocket mounting portion 42 and the second sprocket mounting portion 43 by deforming the sprocket support member 40.  in particular, The plurality of first connecting portions 46 are offset with respect to the first base portion 42a of the first sprocket mounting portion 42 and the second base portion 43a of the second sprocket mounting portion 43. The plurality of first connecting portions 46 are integrally formed with the first sprocket mounting portion 42 and the second sprocket mounting portion 43 as one integral one-piece member.  The plurality of first connecting portions 46 are spaced apart in the circumferential direction. When the sprocket mounting member 39 is viewed along the rotation center axis C1, Each of the plurality of first connecting portions 46 is disposed circumferentially adjacent to the second mounting tab 43b.  Adjacent to the first connecting portion 46 in the circumferential direction, The first base portion 42a and the second base portion 43a form an opening portion S1. When viewed from an axial direction parallel to one of the central axes of rotation C1, The second sprocket mounting portion 43 is disposed in the vicinity of the opening portion S1.  As shown in Figures 6 and 7, The second connecting portion 47 interconnects the second sprocket mounting portion 43 and the third sprocket mounting portion 44. Preferably, The sprocket support member 40 includes a plurality of second connecting portions 47.  The second connecting portion 47 extends non-parallel with respect to the second sprocket mounting portion 43 and the third sprocket mounting portion 44 by deforming the sprocket support member 40.  in particular, The plurality of second connecting portions 47 are skewed with respect to the second base portion 43a of the second sprocket mounting portion 43 and the third base portion 44a of the third sprocket mounting portion 44. The plurality of second connecting portions 47 are integrally formed with the second sprocket mounting portion 43 and the third sprocket mounting portion 44 as one integral one-piece member.  The plurality of second connecting portions 47 are disposed at intervals in the circumferential direction. When the sprocket mounting member 39 is viewed along the rotation center axis C1, Each of the plurality of second connecting portions 47 is disposed circumferentially adjacent to the third mounting tab 44b.  Adjacent to the second connecting portion 47 in the circumferential direction, The second base portion 43a and the third base portion 44a form an opening portion S2. When viewed from an axial direction parallel to one of the central axes of rotation C1, The third sprocket mounting portion 44 is disposed in the vicinity of the opening portion S2.  As shown in Figures 6 and 7, The third connecting portion 48 interconnects the third sprocket mounting portion 44 and the fourth sprocket mounting portion 45. Preferably, The sprocket support member 40 includes a plurality of third connecting portions 48.  The third connecting portion 48 extends non-parallel with respect to the third sprocket mounting portion 44 and the fourth sprocket mounting portion 45 by deforming the sprocket support member 40.  in particular, The plurality of third connecting portions 48 are skewed with respect to the third base portion 44a of the third sprocket mounting portion 44 and the fourth base portion 45a of the fourth sprocket mounting portion 45. The plurality of third connecting portions 48 are integrally formed with the third sprocket mounting portion 44 and the fourth sprocket mounting portion 45 as one integral one-piece member.  The plurality of third connecting portions 48 are spaced apart in the circumferential direction. When the sprocket mounting member 39 is viewed along the rotation center axis C1, Each of the plurality of third connecting portions 48 is disposed circumferentially adjacent to the fourth mounting tab 45b.  Adjacent to the third connecting portion 48 in the circumferential direction, The third base portion 44a and the fourth base portion 45a form an opening portion S3. When viewed from an axial direction parallel to one of the central axes of rotation C1, The fourth sprocket mounting portion 45 is disposed in the vicinity of the opening portion S3.  (multiple rear sprockets) as shown in Figures 2 to 5, The plurality of rear sprockets 41 include a first sprocket 51, a second sprocket 52, a third sprocket 53, a fourth sprocket 54, a fifth sprocket 55, a sixth sprocket 56, A seventh sprocket 57 and an eighth sprocket 58.  - first sprocket - as shown in Figures 2 and 3, The rear sprocket assembly 28 includes a first sprocket 51, The first sprocket 51 is separated from the sprocket support member 40 by one of the components. In an embodiment, The first sprocket 51 is the largest sprocket among the plurality of rear sprockets 41. The first sprocket 51 includes a first total number of teeth. For example, The first total number of teeth is 45.  As shown in Figure 2, The first sprocket 51 includes a first sprocket body 51a and a plurality of first sprocket teeth 51b extending radially outward from the first sprocket body 51a with respect to the central axis of rotation C1.  As shown in Figures 2 and 3, The first sprocket body 51a is formed in a substantially annular shape. The plurality of first sprocket teeth 51b are integrally formed with the first sprocket body 51a as an integral one-piece component. in particular, The plurality of first sprocket teeth 51b are disposed on the outer peripheral portion of one of the first sprocket bodies 51a at predetermined intervals in the circumferential direction.  The first sprocket body 51a is coupled to the first bicycle facing inner surface 42e of the first sprocket mounting portion 42 and the first bicycle facing outward surface 42d of the first sprocket mounting portion 42 (see Figures 6 and 7). One of them.  In an embodiment, The first sprocket body 51a is coupled to the first bicycle facing inner surface 42e of the first sprocket mounting portion 42. For example, The first sprocket body 51a is coupled to the first bicycle facing inner surface 42e of the first sprocket mounting portion 42 by a first fastening member 61.  The first fastening member 61 is coupled to the sprocket support member 40, The first sprocket 51 and the second sprocket 52 are separated from one of the components. For example, The first fastening member 61 includes a rivet.  in particular, As shown in Figure 3, The first sprocket body 51a includes a plurality of first attachment portions 51c. The plurality of first attachment portions 51c are spaced apart in the circumferential direction with respect to the central axis of rotation C1.  Each of the first attachment portions 51c is disposed on a radially inner portion of the first sprocket body 51a to extend radially inward in a radial direction with respect to the central axis of rotation C1.  Each of the first attachment portions 51c includes a first fixed bore 51d. The first fixed bore 51d passes through the first attachment portion 51c in the axial direction. Each of the plurality of first fixed bores 51d is configured to align with each of the plurality of first mounting bores 42c in an axial direction.  The first fastening member 61 is inserted into the first mounting bore 42c, The first fixed bore 51d and a second fixed bore 52d (as explained below). With this, The first sprocket body 51a and the second sprocket body 52a are fixed to the first sprocket mounting portion 42 by a rivet engagement.  - second sprocket - as shown in Figures 2 and 4, The rear sprocket assembly 28 includes a second sprocket 52, The second sprocket 52 is separated from the sprocket support member 40 by one of the components. The second sprocket 52 includes a second total number of teeth that is less than one of the first total number of teeth. For example, The second total number of teeth is 40.  The second sprocket 52 includes a second sprocket body 52a and a plurality of second sprocket teeth 52b extending radially outward from the second sprocket body 52a with respect to the central axis of rotation C1.  The second sprocket body 52a is formed in a substantially annular shape. The plurality of second sprocket teeth 52b are integrally formed with the second sprocket body 52a as an integral one-piece component. in particular, The plurality of second sprocket teeth 52b are disposed on the outer peripheral portion of one of the second sprocket bodies 52a at predetermined intervals in the circumferential direction.  The second sprocket body 52a is coupled to the first bicycle facing outward surface 42d of the first sprocket mounting portion 42 and the first bicycle facing inner surface 42e of the first sprocket mounting portion 42 (see Figures 6 and 7) The other one.  In an embodiment, The second sprocket body 52a is coupled to the first bicycle facing outward surface 42d of the first sprocket mounting portion 42. For example, The second sprocket body 52a is coupled to the first bicycle facing outward surface 42d of the first sprocket mounting portion 42 by a first fastening member 61.  in particular, As shown in Figure 4, The second sprocket body 52a includes a plurality of second attachment portions 52c. The plurality of second attachment portions 52c are spaced apart in the circumferential direction with respect to the central axis of rotation C1.  Each of the second attachment portions 52c is disposed on a radially inner portion of the second sprocket body 52a to extend radially inward in a radial direction with respect to the central axis of rotation C1. Each of the second attachment portions 52c includes a second fixed bore 52d. The second fixed bore 52d passes through the second attachment portion 52c in the axial direction. Each of the plurality of second fixed bores 52d is configured to align with each of the plurality of first mounting bores 42c in an axial direction.  The first fastening member 61 is inserted into the first mounting bore 42c, The first fixed bore 51d and the second fixed bore 52d. With this, The second sprocket body 52a and the first sprocket body 51a are fixed to the first sprocket mounting portion 42 by a rivet engagement.  - third sprocket - as shown in Figures 2 and 5, The rear sprocket assembly 28 includes a third sprocket 53, The third sprocket 53 is separated from the sprocket support member 40 by one of the components. The third sprocket 53 includes a third total number of teeth that is less than one of the second total number of teeth. For example, The third total number of teeth is 36.  The third sprocket 53 includes a third sprocket body 53a and a plurality of third sprocket teeth 53b extending radially outward from the third sprocket body 53a with respect to the central axis of rotation C1.  The third sprocket body 53a is formed in a substantially annular shape.  The plurality of third sprocket teeth 53b and the third sprocket body 53a are integrally formed as one integral one-piece member. in particular, The plurality of third sprocket teeth 53b are disposed on the outer peripheral portion of one of the third sprocket bodies 53a at predetermined intervals in the circumferential direction.  The third sprocket body 53a is coupled to the second bicycle facing inner surface 43e of the second sprocket mounting portion 43 and the second bicycle facing outward surface 43d of the second sprocket mounting portion 43 (see Figs. 6 and 7). One of them.  In an embodiment, The third sprocket body 53a is coupled to the second bicycle facing inner surface 43e of the second sprocket mounting portion 43.  For example, The third sprocket body 53a is coupled to the second bicycle facing inner surface 43e of the second sprocket mounting portion 43 by the second fastening member 62.  The second fastening member 62 is coupled to the sprocket support member 40, The third sprocket 53 and the fourth sprocket 54 are separated from one of the components. For example, The second fastening member 62 includes a rivet.  in particular, As shown in Figure 5, The third sprocket body 53a includes a plurality of third attachment portions 53c. The plurality of third attachment portions 53c are spaced apart in the circumferential direction with respect to the central axis of rotation C1.  Each of the third attachment portions 53c is disposed on a radially inner portion of the third sprocket body 53a to extend radially inward in a radial direction with respect to the central axis of rotation C1. in particular, The third attachment portion 53c projects in the radial direction from the radially inner portion to the inner side of the third sprocket body 53a.  Each of the third attachment portions 53c includes a third fixed bore (not shown). The third fixed bore passes through the third attachment portion 53c in the axial direction. Each of the plurality of third fixed bores is configured to align with each of the plurality of second mounting bores 43c in an axial direction.  The second fastening member 62 is inserted into the second mounting bore 43c, A third fixed bore (not shown) and a fourth fixed bore 54d (as set forth below). With this, The third sprocket body 53a and the fourth sprocket body 54a are fixed to the second sprocket mounting portion 43 by a rivet.  - fourth sprocket - as shown in Figures 2 and 4, The rear sprocket assembly 28 includes a fourth sprocket 54, The fourth sprocket 54 is separated from the sprocket support member 40 by one of the components. The fourth sprocket 54 includes a fourth total number of teeth that is less than one of the third total number of teeth. For example, The fourth total number of teeth is 32.  The fourth sprocket 54 includes a fourth sprocket body 54a and a plurality of fourth sprocket teeth 54b extending radially outward from the fourth sprocket body 54a with respect to the central axis of rotation C1.  The fourth sprocket body 54a is formed in a substantially annular shape. The plurality of fourth sprocket teeth 54b and the fourth sprocket body 54a are integrally formed as one integral one-piece member. in particular, The plurality of fourth sprocket teeth 54b are disposed on the outer peripheral portion of one of the fourth sprocket bodies 54a at predetermined intervals in the circumferential direction.  The fourth sprocket body 54a is coupled to the second bicycle facing outward surface 43d of the second sprocket mounting portion 43 and the second bicycle facing inner surface 43e of the second sprocket mounting portion 43 (see Figures 6 and 7) The other one.  In an embodiment, The fourth sprocket body 54a is coupled to the second bicycle facing outward surface 43d of the second sprocket mounting portion 43. For example, The fourth sprocket body 54a is coupled to the second bicycle facing outward surface 43d of the second sprocket mounting portion 43 by the second fastening member 62.  in particular, The fourth sprocket body 54a includes a plurality of fourth attachment portions 54c as illustrated in FIG. The plurality of fourth attachment portions 54c are spaced apart in the circumferential direction with respect to the central axis of rotation C1.  Each of the fourth attachment portions 54c is disposed on a radially inner portion of the fourth sprocket body 54a to extend radially inward in a radial direction with respect to the central axis of rotation C1. Each of the fourth attachment portions 54c includes a fourth fixed bore 54d. The fourth fixed bore 54d passes through the fourth attachment portion 54c in the axial direction. Each of the plurality of fourth fixed bores 54d is configured to align with each of the plurality of second mounting bores 43c in an axial direction.  The second fastening member 62 is inserted into the second mounting bore 43c, The third fixed bore (not shown) and the fourth fixed bore 54d. With this, The fourth sprocket body 54a and the third sprocket body 53a are fixed to the second sprocket mounting portion 43 by a rivet.  - fifth sprocket - as shown in Figure 2 and Figure 5, The rear sprocket assembly 28 includes a fifth sprocket 55, The fifth sprocket 55 is separated from the sprocket support member 40 by one of the components. The fifth sprocket 55 includes a fifth total number of teeth that is less than one of the fourth total number of teeth. For example, The fifth total number of teeth is 28.  The fifth sprocket 55 includes a fifth sprocket main body 55a and a plurality of fifth sprocket teeth 55b extending radially outward from the fifth sprocket main body 55a with respect to the rotation center axis C1.  The fifth sprocket body 55a is formed in a substantially annular shape.  The plurality of fifth sprocket teeth 55b and the fifth sprocket body 55a are integrally formed as one integral one-piece member. in particular, The plurality of fifth sprocket teeth 55b are disposed on the outer peripheral portion of one of the fifth sprocket bodies 55a at predetermined intervals in the circumferential direction.  The fifth sprocket body 55a is coupled to the third bicycle facing inner surface 44e of the third sprocket mounting portion 44 and the third bicycle facing outward surface 44d of the third sprocket mounting portion 44 (see Figs. 6 and 7). One of them.  In an embodiment, The fifth sprocket body 55a is coupled to the third bicycle facing inner surface 44e of the third sprocket mounting portion 44. For example, The fifth sprocket body 55a is coupled to the third bicycle facing inner surface 44e of the third sprocket mounting portion 44 by a third fastening member 63.  The third fastening member 63 is coupled to the sprocket support member 40, The fifth sprocket 55 and the sixth sprocket 56 are separated from one of the components. For example, The third fastening member 63 includes a rivet.  in particular, As shown in Figure 5, The fifth sprocket body 55a includes a plurality of fifth attachment portions 55c. The plurality of fifth attachment portions 55c are spaced apart in the circumferential direction with respect to the central axis of rotation C1.  Each of the fifth attachment portions 55c is disposed on a radially inner portion of the fifth sprocket body 55a to extend radially inward in a radial direction with respect to the central axis of rotation C1. in particular, The fifth attachment portion 55c projects in the radial direction from the radially inner portion to the inner side of the fifth sprocket body 55a.  Each of the fifth attachment portions 55c includes a fifth fixed bore (not shown). The fifth fixed bore passes through the fifth attachment portion 55c in the axial direction. Each of the plurality of fifth fixed bores is configured to align with each of the plurality of third mounting bores 44c in an axial direction.  The third fastening member 63 is inserted into the third mounting bore 44c, A fifth fixed bore (not shown) and a sixth fixed bore 56d (as explained below). With this, The fifth sprocket body 55a and a sixth sprocket body 56a (as explained below) are fixed to the third sprocket mounting portion 44 by a rivet engagement.  - sixth sprocket - as shown in Figure 2 and Figure 4, The rear sprocket assembly 28 includes a sixth sprocket 56, The sixth sprocket 56 is separated from the sprocket support member 40 by one of the components. The sixth sprocket 56 includes a sixth total number of teeth that is less than one of the fifth total number of teeth. For example, The sixth total number of teeth is 24.  The sixth sprocket 56 includes a sixth sprocket main body 56a and a plurality of sixth sprocket teeth 56b extending radially outward from the sixth sprocket main body 56a with respect to the rotation center axis C1.  The sixth sprocket body 56a is formed in a substantially annular shape. The plurality of sixth sprocket teeth 56b and the sixth sprocket body 56a are integrally formed as one integral one-piece member. in particular, The plurality of sixth sprocket teeth 56b are disposed on the outer peripheral portion of one of the sixth sprocket bodies 56a at predetermined intervals in the circumferential direction.  The sixth sprocket body 56a is coupled to the third bicycle facing inner surface 44e of the third sprocket mounting portion 44 and the third bicycle facing outward surface 44d of the third sprocket mounting portion 44 (see Figs. 6 and 7). The other one.  In an embodiment, The sixth sprocket body 56a is coupled to the third bicycle facing outward surface 44d of the third sprocket mounting portion 44. For example, The sixth sprocket body 56a is coupled to the third bicycle facing outward surface 44d of the third sprocket mounting portion 44 by a third fastening member 63.  in particular, As shown in Figure 4, The sixth sprocket body 56a includes a plurality of sixth attachment portions 56c. The plurality of sixth attachment portions 56c are spaced apart in the circumferential direction with respect to the central axis of rotation C1.  Each of the sixth attachment portions 56c is disposed on a radially inner portion of the sixth sprocket body 56a to extend radially inward in a radial direction with respect to the central axis of rotation C1. Each of the sixth attachment portions 56c includes a sixth fixed bore 56d. The sixth fixed bore 56d passes through the sixth attachment portion 56c in the axial direction. Each of the plurality of sixth fixed bores 56d is configured to align with each of the plurality of third mounting bores 44c in an axial direction.  The third fastening member 63 is inserted into the third mounting bore 44c, The fifth fixed bore (not shown) and the sixth fixed bore 56d. With this, The sixth sprocket body 56a and the fifth sprocket body 55a are fixed to the third sprocket mounting portion 44 by a rivet engagement.  - seventh sprocket - as shown in Figure 2 and Figure 5, The rear sprocket assembly 28 includes a seventh sprocket 57, The seventh sprocket 57 is separated from the sprocket support member 40 by one of the components. The seventh sprocket 57 includes a seventh total number of teeth that is less than one of the sixth total number of teeth. For example, The seventh total number of teeth is 21.  The seventh sprocket 57 includes a seventh sprocket main body 57a and a plurality of seventh sprocket teeth 57b extending radially outward from the seventh sprocket main body 57a with respect to the rotation center axis C1.  The seventh sprocket body 57a is formed in a substantially annular shape.  The plurality of seventh sprocket teeth 57b and the seventh sprocket body 57a are integrally formed as one integral one-piece member. in particular, The plurality of seventh sprocket teeth 57b are disposed on the outer peripheral portion of one of the seventh sprocket bodies 57a at predetermined intervals in the circumferential direction.  The seventh sprocket body 57a is coupled to the fourth bicycle facing inner surface 45e of the fourth sprocket mounting portion 45 and the fourth bicycle facing outward surface 45d of the fourth sprocket mounting portion 45 (see Figs. 6 and 7). One of them.  In an embodiment, The seventh sprocket body 57a is coupled to the fourth bicycle facing inner surface 45e of the fourth sprocket mounting portion 45. For example, The seventh sprocket body 57a is coupled to the fourth bicycle facing inner surface 45e of the fourth sprocket mounting portion 45 by the fourth fastening member 64.  The fourth fastening member 64 is coupled to the sprocket support member 40, The seventh sprocket 57 and the eighth sprocket 58 are separated from one of the components. For example, The fourth fastening component 64 includes a rivet.  in particular, As shown in Figure 5, The seventh sprocket body 57a includes a plurality of seventh attachment portions 57c. The plurality of seventh attachment portions 57c are spaced apart in the circumferential direction with respect to the central axis of rotation C1.  Each of the seventh attachment portions 57c is disposed on a radially inner portion of the seventh sprocket body 57a to extend radially inward in a radial direction with respect to the central axis of rotation C1. in particular, The seventh attachment portion 57c projects in the radial direction from the radially inner portion to the inner side of the seventh sprocket body 57a.  Each of the seventh attachment portions 57c includes a seventh fixed bore (not shown). The seventh fixed bore passes through the seventh attachment portion 57c in the axial direction. Each of the plurality of seventh fixed bores is configured to align with each of the plurality of fourth mounting bores 45c in an axial direction.  The fourth fastening member 64 is inserted into the fourth mounting bore 45c, A seventh fixed bore (not shown) and an eighth fixed bore 58d (as set forth below). With this, The seventh sprocket body 57a and the eighth sprocket body 58a (as explained below) are fixed to the fourth sprocket mounting portion 45 by a rivet engagement.  - eighth sprocket - as shown in Figure 2 and Figure 4, The rear sprocket assembly 28 includes an eighth sprocket 58, The eighth sprocket 58 is separated from the sprocket support member 40 by one of the components. The eighth sprocket 58 includes an eighth total number of teeth that is less than one of the seventh total number of teeth. For example, The eighth total number of teeth is 18.  The eighth sprocket 58 includes an eighth sprocket body 58a and a plurality of eighth sprocket teeth 58b extending radially outward from the eighth sprocket body 58a with respect to the central axis of rotation C1.  The eighth sprocket body 58a is formed in a substantially annular shape. The plurality of eighth sprocket teeth 58b are integrally formed with the eighth sprocket body 58a as an integral one-piece component. in particular, The plurality of eighth sprocket teeth 58b are disposed on the outer peripheral portion of one of the eighth sprocket bodies 58a at predetermined intervals in the circumferential direction.  The eighth sprocket body 58a is coupled to the fourth bicycle facing inner surface 45e of the fourth sprocket mounting portion 45 and the fourth bicycle facing outward surface 45d of the fourth sprocket mounting portion 45 (see Figs. 6 and 7). The other one.  In an embodiment, The eighth sprocket body 58a is coupled to the fourth bicycle facing outward surface 45d of the fourth sprocket mounting portion 45. For example, The eighth sprocket body 58a is coupled to the second bicycle facing outward surface 45d of the fourth sprocket mounting portion 45 by the fourth fastening member 64.  in particular, The eighth sprocket body 58a includes a plurality of eighth attachment portions 58c as illustrated in FIG. The plurality of eighth attachment portions 58c are spaced apart in the circumferential direction with respect to the central axis of rotation C1.  Each of the eighth attachment portions 58c is disposed on a radially inner portion of the eighth sprocket body 58a to extend radially inward in a radial direction with respect to the central axis of rotation C1. Each of the eighth attachment portions 58c includes an eighth fixed bore 58d. The eighth fixed bore 58d passes through the eighth attachment portion 58c in the axial direction. Each of the plurality of eighth fixed bores 58d is configured to align with each of the plurality of fourth mounting bores 45c in an axial direction.  The fourth fastening member 64 is inserted into the fourth mounting bore 45c, The seventh fixed pupil (not shown) and the eighth fixed pupil 58d. With this, The eighth sprocket body 58a and the seventh sprocket body 57a are fixed to the fourth sprocket mounting portion 45 by a rivet.  <<Installation of multiple rear sprocket to sprocket mounting parts>> First, The first attachment portions 51c of the first sprocket 51 are respectively abutted to the first bicycle facing inner surface 42e of the first mounting tab 42b of the first sprocket mounting portion 42.  then, The second attachment portions 52c of the second sprocket 52 are respectively abutted to the first bicycle facing outward surface 42d of the first mounting tab 42b of the first sprocket mounting portion 42.  In this state, By the first fastening component 61 (for example, a rivet) fixing the first attachment portion 51c, The second attachment portion 52c and the first mounting tab 42b.  With this, The first sprocket 51 and the second sprocket 52 are fixed to the first sprocket mounting portion 42 by rivet engagement as explained above.  second, Each of the plurality of third attachment portions 53c of the third sprocket 53 is passed through a space in the circumferential direction between the adjacent second mounting tabs 43b toward the first sprocket mounting portion 42.  then, The third sprocket 53 is rotated in the circumferential direction. The third attachment portion 53c of the third sprocket 53 is respectively abutted to the second bicycle facing inner surface 43e of the second mounting tab 43b of the second sprocket mounting portion 43.  then, The fourth attachment portion 54c of the fourth sprocket 54 is respectively abutted to the second bicycle facing outward surface 43d of the second mounting tab 43b of the second sprocket mounting portion 43.  In this state, By the second fastening component 62 (for example, a rivet) fixing the third attachment portion 53c, The fourth attachment portion 54c and the second mounting tab 43b.  With this, The third sprocket 53 and the fourth sprocket 54 are fixed to the second sprocket mounting portion 43 by rivet engagement as explained above.  third, Each of the plurality of fifth attachment portions 55c of the fifth sprocket 55 is caused to pass through a space between the adjacent third mounting tabs 44b in the circumferential direction toward the second sprocket mounting portion 43.  then, The fifth sprocket 55 is rotated in the circumferential direction. The fifth attachment portion 55c of the fifth sprocket 55 is respectively abutted to the third bicycle facing inner surface 44e of the third mounting tab 44b of the third sprocket mounting portion 44.  then, The sixth attachment portion 56c of the sixth sprocket 56 is respectively abutted to the third bicycle facing outward surface 44d of the third mounting tab 44b of the third sprocket mounting portion 44.  In this state, By the third fastening member 63 (for example, Rivet) fixing the fifth attachment portion 55c, The sixth attachment portion 56c and the third mounting tab 44b.  With this, The fifth sprocket 55 and the sixth sprocket 56 are fixed to the third sprocket mounting portion 44 by rivet engagement as explained above.  At last, Each of the plurality of seventh attachment portions 57c of the seventh sprocket 57 is passed through a space between the adjacent fourth mounting tabs 45b in the circumferential direction toward the third sprocket mounting portion 44.  then, The seventh sprocket 57 is rotated in the circumferential direction. The seventh attachment portion 57c of the seventh sprocket 57 is respectively abutted to the fourth bicycle facing inner surface 45e of the fourth mounting tab 45b of the fourth sprocket mounting portion 45.  then, The eighth attachment portion 58c of the eighth sprocket 58 is respectively abutted to the fourth bicycle facing outward surface 45d of the fourth mounting tab 45b of the fourth sprocket mounting portion 45.  In this state, By the fourth fastening component 64 (for example, Rivet) fixing the seventh attachment portion 57c, The eighth attachment portion 58c and the fourth mounting tab 45b.  With this, The seventh sprocket 57 and the eighth sprocket 58 are fixed to the fourth sprocket mounting portion 45 by rivet engagement as explained above.  By arranging a plurality of rear sprockets 41 to the sprocket mounting member 39, a sprocket support member 40 made of a single metal plate supports the first rear sprocket to the eighth rear sprocket 51, 52. 53, 54, 55. 56. 57. 58.  With this, The rear sprocket assembly 28 can reduce weight and increase production efficiency. This is because the number of sprocket support members 40 is smaller than the number of conventional sprocket mounting members and the sprocket support member 40 is easily formed.  In addition, The rear sprocket assembly 28 can improve the flexibility of choice of materials. This is because the sprocket support member 40 is coupled to the first rear sprocket to the eighth rear sprocket 51, 52. 53, 54, 55. 56. 57. 58 separates one of the components.  Other Embodiments (A) In the embodiment, Explain as follows: The fourth sprocket mounting portion 45 of the sprocket support member 40 can have a hub engagement profile 45f.  As shown in Figure 8, Not only the fourth sprocket mounting portion 45 of the sprocket support member 40 but also the first sprocket 51 may have a hub engagement profile 42f.  In this case, The hub engagement contour 42f of the first sprocket 51 is formed as a splined hole. With this, The rear sprocket assembly 28 is coupled to the rear hub assembly 29 by a hub engagement contour 42f of the first sprocket 51 and a hub engagement contour 45f of the fourth sprocket mounting portion 45 of the sprocket support member 40 (e.g., sprocket mounting member 39) ) Engage.  (B) In an embodiment, Explain as follows: First to fourth fastening members 61, 62. 63. Each of 64 includes a rivet. or, First to fourth fastening members 61, 62. 63. At least one of 64 may comprise a binder. For example, First to fourth fastening members 61, 62. 63. Each of 64 may comprise a binder.  General explanation of terms When understanding the scope of the invention, As used herein, the term "comprising" and its derivatives are intended to be open-ended terms. It specifies the stated characteristics, element, Component, Group, The existence of integers and/or steps, But does not exclude other unreported features, element, Component, Group, The existence of integers and / or steps. The foregoing also applies to words with similar meanings. Such as "including", "having" and its derivatives. In addition, The term "part", "section", "portion", "Parts" or "components" may have the dual meaning of a single part or plural parts when used in the singular. In addition, As used herein to describe the above embodiments, The following directional term "facing forward", "Backward", "top", "down", "vertical", "Level", "below", "horizontal", "Inward" and "outward" and any other similar directional term refers to the direction in which the multiple bicycle sprocket assemblies are in the state in which the multiple bicycle sprocket assembly is mounted to one of the bicycles. therefore, Such terms as used to describe the teachings of the present invention are to be construed as being relative to multiple bicycle sprocket assemblies.  As used herein to describe a component of a device, The term "constructed" in the section or section implies that there are other unclaimed or unmentioned components of the means for performing a desired function, Section, Part or part.  As used herein, such as "substantially", The terms "about" and "approximately" mean a reasonable deviation of one of the modified terms so that the final result does not change significantly.  Although only selected embodiments are selected to illustrate the techniques of the present invention, However, those skilled in the art will be aware of the present invention. Various changes and modifications can be made herein without departing from the scope of the invention as defined in the appended claims. For example, Changing the size of each component as needed and/or desired, shape, Location or orientation. Components that are shown directly connected or contacting each other can have an intermediate structure disposed therebetween. The function of one component can be performed by two components. And vice versa. The structure and function of one embodiment can be used in another embodiment. All advantages are not necessarily presented in a particular embodiment at the same time. Different from prior art, Each feature, individually or in combination with other features, should also be considered as a separate description of one of the applicant's other techniques, including the structural and/or functional concepts embodied by the features. therefore, The foregoing description of the embodiments of the present invention is provided for the purpose of illustration and description

1‧‧‧自行車
9‧‧‧自行車鏈條
11‧‧‧車架
11a‧‧‧車架主體
11b‧‧‧前叉
11c‧‧‧頂部管
11d‧‧‧頭部管
11e‧‧‧座管
11f‧‧‧下部管
11g‧‧‧鏈條支桿
11h‧‧‧座支桿
11j‧‧‧後端
12‧‧‧底部托架懸置部
13‧‧‧把手
15‧‧‧前輪轂總成
17‧‧‧前輪
17a‧‧‧前輪胎
19‧‧‧後輪
19a‧‧‧後輪胎
24‧‧‧變速操作裝置
25‧‧‧驅動系統
26‧‧‧後變速器
27‧‧‧曲輪總成
28‧‧‧後鏈輪總成/多重後鏈輪總成
29‧‧‧後輪轂總成
33‧‧‧右曲輪臂
34‧‧‧踏板
35‧‧‧前鏈輪
39‧‧‧鏈輪安裝部件
40‧‧‧鏈輪支撐部件
41‧‧‧後鏈輪
42‧‧‧第一鏈輪安裝部分
42a‧‧‧第一基座部分
42b‧‧‧第一安裝突片
42c‧‧‧第一安裝鏜孔
42d‧‧‧第一自行車面朝外表面
42e‧‧‧第一自行車面朝內表面
42f‧‧‧輪轂嚙合輪廓
43‧‧‧第二鏈輪安裝部分
43a‧‧‧第二基座部分
43b‧‧‧第二安裝突片
43c‧‧‧第二安裝鏜孔
43d‧‧‧第二自行車面朝外表面
43e‧‧‧第二自行車面朝內表面
44‧‧‧第三鏈輪安裝部分
44a‧‧‧第三基座部分
44b‧‧‧第三安裝突片
44c‧‧‧第三安裝鏜孔
44d‧‧‧第三自行車面朝外表面
44e‧‧‧第三自行車面朝內表面
45‧‧‧第四鏈輪安裝部分
45a‧‧‧第四基座部分
45b‧‧‧第四安裝突片
45c‧‧‧第四安裝鏜孔
45d‧‧‧第四自行車面朝外表面
45e‧‧‧第四自行車面朝內表面
45f‧‧‧輪轂嚙合輪廓
46‧‧‧第一連接部分
47‧‧‧第二連接部分
48‧‧‧第三連接部分
51‧‧‧第一鏈輪/後輪轂輪軸/後輪轂輪軸/第一後鏈輪
51a‧‧‧第一鏈輪主體
51b‧‧‧第一鏈輪齒
51c‧‧‧第一附接部分
51d‧‧‧第一固定鏜孔
52‧‧‧第二鏈輪/第二後鏈輪
52a‧‧‧第二鏈輪主體
52b‧‧‧第二鏈輪齒
52c‧‧‧第二附接部分
52d‧‧‧第二固定鏜孔
53‧‧‧第三鏈輪/第三後鏈輪
53a‧‧‧第三鏈輪主體
53b‧‧‧第三鏈輪齒
53c‧‧‧第三附接部分
54‧‧‧第四鏈輪/第四後鏈輪
54a‧‧‧第四鏈輪主體
54b‧‧‧第四鏈輪齒
54c‧‧‧第四附接部分
54d‧‧‧第四固定鏜孔
55‧‧‧第五鏈輪/第五後鏈輪
55a‧‧‧第五鏈輪主體
55b‧‧‧第五鏈輪齒
55c‧‧‧第五附接部分
56‧‧‧第六鏈輪/第六後鏈輪
56a‧‧‧第六鏈輪主體
56b‧‧‧第六鏈輪齒
56c‧‧‧第六附接部分
56d‧‧‧第六固定鏜孔
57‧‧‧第七鏈輪/第七後鏈輪
57a‧‧‧第七鏈輪主體
57b‧‧‧第七鏈輪齒
57c‧‧‧第七附接部分
58‧‧‧第八鏈輪/第八後鏈輪
58a‧‧‧第八鏈輪主體
58b‧‧‧第八鏈輪齒
58c‧‧‧第八附接部分
58d‧‧‧第八固定鏜孔
61‧‧‧第一緊固部件
62‧‧‧第二緊固部件
63‧‧‧第三緊固部件
64‧‧‧第四緊固部件
C1‧‧‧旋轉中心軸
S1‧‧‧開口部分
S2‧‧‧開口部分
S3‧‧‧開口部分1‧‧‧Bicycle
9‧‧‧Bicycle chain
11‧‧‧ frame
11a‧‧‧ frame body
11b‧‧‧ front fork
11c‧‧‧Top tube
11d‧‧‧ head tube
11e‧‧‧ seat tube
11f‧‧‧lower tube
11g‧‧‧Chain Struts
11h‧‧‧ pole
11j‧‧‧ backend
12‧‧‧Bottom bracket suspension
13‧‧‧Hands
15‧‧‧Front hub assembly
17‧‧‧ Front wheel
17a‧‧‧Front tires
19‧‧‧ Rear wheel
19a‧‧‧After tire
24‧‧‧Transmission operating device
25‧‧‧Drive system
26‧‧‧ Rear derailleur
27‧‧‧Corrugated wheel assembly
28‧‧‧After sprocket assembly/multiple rear sprocket assembly
29‧‧‧ rear hub assembly
33‧‧‧Right curved arm
34‧‧‧ pedal
35‧‧‧Front sprocket
39‧‧‧Sprocket mounting parts
40‧‧‧Sprocket support parts
41‧‧‧After sprocket
42‧‧‧First sprocket installation
42a‧‧‧First base section
42b‧‧‧First mounting tab
42c‧‧‧First installation pupil
42d‧‧‧First bicycle facing outward
42e‧‧‧The first bicycle faces the inner surface
42f‧‧·wheel engagement contour
43‧‧‧Second sprocket installation
43a‧‧‧Second base section
43b‧‧‧Second mounting tab
43c‧‧‧Second installation pupil
43d‧‧‧Second bicycle facing outward
43e‧‧‧Second bicycle facing the inner surface
44‧‧‧ Third sprocket installation
44a‧‧‧ Third base part
44b‧‧‧3rd mounting tab
44c‧‧‧ third mounting pupil
44d‧‧‧ Third bicycle facing outward
44e‧‧‧ Third bicycle facing the inner surface
45‧‧‧Four sprocket installation
45a‧‧‧4th pedestal section
45b‧‧‧Four Mounting Tabs
45c‧‧‧fourth installation pupil
45d‧‧‧Four bicycle facing outward
45e‧‧‧Four bicycle facing the inner surface
45f‧‧·wheel engagement contour
46‧‧‧First connection
47‧‧‧Second connection
48‧‧‧ third connection
51‧‧‧First sprocket/rear hub axle/rear hub axle/first rear sprocket
51a‧‧‧First sprocket body
51b‧‧‧First sprocket
51c‧‧‧First Attachment
51d‧‧‧First fixed pupil
52‧‧‧Second sprocket/second rear sprocket
52a‧‧‧Second sprocket body
52b‧‧‧Second sprocket
52c‧‧‧Second Attachment
52d‧‧‧Second fixed pupil
53‧‧‧ Third sprocket/third rear sprocket
53a‧‧‧The third sprocket body
53b‧‧‧third sprocket
53c‧‧‧ third attachment
54‧‧‧fourth sprocket/fourth rear sprocket
54a‧‧‧Four sprocket body
54b‧‧‧fourth sprocket
54c‧‧‧Fourth Attachment
54d‧‧‧Four fixed bore
55‧‧‧5th sprocket/fifth rear sprocket
55a‧‧‧ fifth sprocket body
55b‧‧‧5th sprocket
55c‧‧‧ fifth attachment
56‧‧‧6th sprocket/sixth rear sprocket
56a‧‧‧The sixth sprocket body
56b‧‧‧6th sprocket
56c‧‧‧Sixth Attachment
56d‧‧‧ sixth fixed pupil
57‧‧‧ seventh sprocket/seventh rear sprocket
57a‧‧‧ seventh sprocket body
57b‧‧‧ seventh sprocket
57c‧‧‧ seventh attachment
58‧‧‧8th sprocket/eighth rear sprocket
58a‧‧‧ eighth sprocket body
58b‧‧‧8th sprocket tooth
58c‧‧‧8th Attachment
58d‧‧‧8th fixed pupil
61‧‧‧First fastening parts
62‧‧‧Second fastening parts
63‧‧‧ Third fastening parts
64‧‧‧Four fastening parts
C1‧‧‧Rotation center axis
S1‧‧‧ opening part
S2‧‧‧ opening part
S3‧‧‧ opening part

現在參考形成此原始揭示內容之一部分之附圖： 圖1係根據本發明之一實施例之一自行車之一側視圖； 圖2係根據實施例之一後鏈輪總成之一前視圖； 圖3係根據實施例之一後鏈輪總成之一後視圖； 圖4係根據實施例之一後鏈輪總成之一前視圖(不包括一第三鏈輪、一第五鏈輪及一第七鏈輪)； 圖5係根據實施例之一後鏈輪總成之一前視圖(不包括一第一鏈輪、一第二鏈輪、第四鏈輪、一第六鏈輪及一第八鏈輪)； 圖6係根據實施例之一鏈輪安裝部件之一透視圖； 圖7係根據實施例之一鏈輪安裝部件之一前視圖；且 圖8係根據另一實施例之一第一鏈輪之一後視圖。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side elevational view of one of the bicycles in accordance with an embodiment of the present invention; FIG. 2 is a front elevational view of one of the rear sprocket assemblies in accordance with an embodiment; 3 is a rear view of one of the rear sprocket assemblies according to one embodiment; FIG. 4 is a front view of one of the rear sprocket assemblies according to an embodiment (excluding a third sprocket, a fifth sprocket, and a Figure 7 is a front view of one of the rear sprocket assemblies according to one embodiment (excluding a first sprocket, a second sprocket, a fourth sprocket, a sixth sprocket, and a Figure 6 is a perspective view of one of the sprocket mounting members according to an embodiment; Figure 7 is a front elevational view of one of the sprocket mounting members according to an embodiment; and Figure 8 is in accordance with another embodiment A rear view of one of the first sprocket.

40‧‧‧鏈輪支撐部件 40‧‧‧Sprocket support parts

42‧‧‧第一鏈輪安裝部分 42‧‧‧First sprocket installation

42a‧‧‧第一基座部分 42a‧‧‧First base section

42b‧‧‧第一安裝突片 42b‧‧‧First mounting tab

42c‧‧‧第一安裝鏜孔 42c‧‧‧First installation pupil

42d‧‧‧第一自行車面朝外表面 42d‧‧‧First bicycle facing outward

42e‧‧‧第一自行車面朝內表面 42e‧‧‧The first bicycle faces the inner surface

43‧‧‧第二鏈輪安裝部分 43‧‧‧Second sprocket installation

43a‧‧‧第二基座部分 43a‧‧‧Second base section

43b‧‧‧第二安裝突片 43b‧‧‧Second mounting tab

43c‧‧‧第二安裝鏜孔 43c‧‧‧Second installation pupil

43d‧‧‧第二自行車面朝外表面 43d‧‧‧Second bicycle facing outward

43e‧‧‧第二自行車面朝內表面 43e‧‧‧Second bicycle facing the inner surface

44‧‧‧第三鏈輪安裝部分 44‧‧‧ Third sprocket installation

44a‧‧‧第三基座部分 44a‧‧‧ Third base part

44b‧‧‧第三安裝突片 44b‧‧‧3rd mounting tab

44c‧‧‧第三安裝鏜孔 44c‧‧‧ third mounting pupil

44d‧‧‧第三自行車面朝外表面 44d‧‧‧ Third bicycle facing outward

44e‧‧‧第三自行車面朝內表面 44e‧‧‧ Third bicycle facing the inner surface

45‧‧‧第四鏈輪安裝部分 45‧‧‧Four sprocket installation

45a‧‧‧第四基座部分 45a‧‧‧4th pedestal section

45b‧‧‧第四安裝突片 45b‧‧‧Four Mounting Tabs

45c‧‧‧第四安裝鏜孔 45c‧‧‧fourth installation pupil

45d‧‧‧第四自行車面朝外表面 45d‧‧‧Four bicycle facing outward

45e‧‧‧第四自行車面朝內表面 45e‧‧‧Four bicycle facing the inner surface

45f‧‧‧輪轂嚙合輪廓 45f‧‧·wheel engagement contour

46‧‧‧第一連接部分 46‧‧‧First connection

47‧‧‧第二連接部分 47‧‧‧Second connection

48‧‧‧第三連接部分 48‧‧‧ third connection

C1‧‧‧旋轉中心軸 C1‧‧‧Rotation center axis

S1‧‧‧開口部分 S1‧‧‧ opening part

S2‧‧‧開口部分 S2‧‧‧ opening part

S3‧‧‧開口部分 S3‧‧‧ opening part

Claims (25)

一種具有一旋轉中心軸之多重自行車鏈輪總成，該多重自行車鏈輪總成包括： 一鏈輪支撐部件，其由一單個金屬板製成， 該鏈輪支撐部件包含：一第一鏈輪安裝部分；一第二鏈輪安裝部分，其沿平行於該旋轉中心軸之一軸向方向與該第一鏈輪安裝部分間隔開；及一第一連接部分，其互連該第一鏈輪安裝部分與該第二鏈輪安裝部分， 該第一鏈輪安裝部分具有一第一自行車面朝內表面及沿該軸向方向與該第一自行車面朝內表面相對之一第一自行車面朝外表面， 該第二鏈輪安裝部分具有一第二自行車面朝內表面及沿該軸向方向與該第二自行車面朝內表面相對之一第二自行車面朝外表面；及 一第一鏈輪，其包含一第一鏈輪主體及相對於該旋轉中心軸自該第一鏈輪主體徑向朝外延伸之複數個第一鏈輪齒， 該第一鏈輪係與該鏈輪支撐部件分離之一部件，該第一鏈輪主體耦合至該第一鏈輪安裝部分之該第一自行車面朝內表面及該第一鏈輪安裝部分之該第一自行車面朝外表面中之一者。A multiple bicycle sprocket assembly having a rotating central shaft, the multiple bicycle sprocket assembly comprising: a sprocket support member made of a single metal plate, the sprocket support member comprising: a first sprocket a mounting portion; a second sprocket mounting portion spaced apart from the first sprocket mounting portion in an axial direction parallel to one of the central axes of rotation; and a first connecting portion interconnecting the first sprocket a mounting portion and the second sprocket mounting portion, the first sprocket mounting portion having a first bicycle facing inner surface and a first bicycle facing the first bicycle facing inner surface in the axial direction An outer surface, the second sprocket mounting portion has a second bicycle facing inner surface and a second bicycle facing outward surface opposite the second bicycle facing inner surface in the axial direction; and a first chain a wheel comprising a first sprocket body and a plurality of first sprocket teeth extending radially outward from the first sprocket body with respect to the central axis of rotation, the first sprocket and the sprocket support member Separating one part, the A sprocket coupled to the body and the first surface of the first sprocket mounting a bicycle sprocket mounting portion of the first face of the first bicycle portion of the outwardly facing surface of one of those. 如請求項1之多重自行車鏈輪總成，其進一步包括： 一第二鏈輪，其包含一第二鏈輪主體及相對於該旋轉中心軸自該第二鏈輪主體徑向朝外延伸之複數個第二鏈輪齒，該第二鏈輪係與該鏈輪支撐部件分離之一部件，該第二鏈輪主體耦合至該第一鏈輪安裝部分之該第一自行車面朝內表面及該第一鏈輪安裝部分之該第一自行車面朝外表面中之另一者； 一第三鏈輪，其包含一第三鏈輪主體及相對於該旋轉中心軸自該第三鏈輪主體徑向朝外延伸之複數個第三鏈輪齒，該第三鏈輪係與該鏈輪支撐部件分離之一部件，該第三鏈輪主體耦合至該第二鏈輪安裝部分之該第二自行車面朝內表面及該第二鏈輪安裝部分之該第二自行車面朝外表面中之一者；及 一第四鏈輪，其包含一第四鏈輪主體及相對於該旋轉中心軸自該第四鏈輪主體徑向朝外延伸之複數個第四鏈輪齒，該第四鏈輪係與該鏈輪支撐部件分離之一部件，該第四鏈輪主體耦合至該第二鏈輪安裝部分之該第二自行車面朝內表面及該第二鏈輪安裝部分之該第二自行車面朝外表面中之另一者；且其中 該第一鏈輪主體耦合至該第一鏈輪安裝部分之該第一自行車面朝內表面；且 該第二鏈輪主體耦合至該第一鏈輪安裝部分之該第一自行車面朝外表面。The multiple bicycle sprocket assembly of claim 1, further comprising: a second sprocket including a second sprocket body and extending radially outward from the second sprocket body relative to the central axis of rotation a plurality of second sprocket teeth, the second sprocket being separated from the sprocket support member, the second sprocket body being coupled to the first bicycle facing inner surface of the first sprocket mounting portion and The other of the first bicycle facing outward surfaces of the first sprocket mounting portion; a third sprocket including a third sprocket body and the third sprocket body relative to the central axis of rotation a plurality of third sprocket teeth extending radially outwardly, the third sprocket being separated from the sprocket support member by a component, the third sprocket body being coupled to the second of the second sprocket mounting portion a bicycle facing inward surface and one of the second bicycle facing outward surfaces of the second sprocket mounting portion; and a fourth sprocket including a fourth sprocket body and relative to the central axis of rotation The fourth sprocket body has a plurality of fourth sprocket teeth extending radially outward, The fourth sprocket is separated from the sprocket support member by a second sprocket body coupled to the second bicycle facing inner surface of the second sprocket mounting portion and the second sprocket mounting portion The second bicycle faces the other of the outer surfaces; and wherein the first sprocket body is coupled to the first bicycle facing inner surface of the first sprocket mounting portion; and the second sprocket body is coupled to The first bicycle of the first sprocket mounting portion faces the outer surface. 如請求項2之多重自行車鏈輪總成，其中 該鏈輪支撐部件進一步包含：一第三鏈輪安裝部分，其沿該軸向方向與該第二鏈輪安裝部分間隔開；及一第二連接部分，其互連該第二鏈輪安裝部分與該第三鏈輪安裝部分； 該第三鏈輪安裝部分具有一第三自行車面朝內表面及沿該軸向方向與該第三自行車面朝內表面相對之一第三自行車面朝外表面；且 該多重自行車鏈輪總成進一步包括： 一第五鏈輪，其包含一第五鏈輪主體及相對於該旋轉中心軸自該第五鏈輪主體徑向朝外延伸之複數個第五鏈輪齒， 該第五鏈輪係與該鏈輪支撐部件分離之一部件，該第五鏈輪主體耦合至該第三鏈輪安裝部分之該第三自行車面朝內表面及該第三鏈輪安裝部分之該第三自行車面朝外表面中之一者；及 一第六鏈輪，其包含一第六鏈輪主體及相對於該旋轉中心軸自該第六鏈輪主體徑向朝外延伸之複數個第六鏈輪齒， 該第六鏈輪係與該鏈輪支撐部件分離之一部件，該第六鏈輪主體耦合至該第三鏈輪安裝部分之該第三自行車面朝內表面及該第三鏈輪安裝部分之該第三自行車面朝外表面中之另一者。The multiple bicycle sprocket assembly of claim 2, wherein the sprocket support member further comprises: a third sprocket mounting portion spaced apart from the second sprocket mounting portion in the axial direction; and a second a connecting portion interconnecting the second sprocket mounting portion and the third sprocket mounting portion; the third sprocket mounting portion having a third bicycle facing inner surface and the third bicycle surface along the axial direction The plurality of bicycle sprocket assemblies further include: a fifth sprocket including a fifth sprocket body and the fifth from the center of rotation a plurality of fifth sprocket teeth extending radially outwardly from the sprocket body, the fifth sprocket being separated from the sprocket support member by a component, the fifth sprocket body being coupled to the third sprocket mounting portion a third bicycle facing inner surface and one of the third bicycle facing outward surfaces of the third sprocket mounting portion; and a sixth sprocket including a sixth sprocket body and relative to the rotation The central axis from the sixth sprocket body diameter a plurality of sixth sprocket teeth extending outwardly, the sixth sprocket being separated from the sprocket support member, the sixth sprocket body being coupled to the third bicycle of the third sprocket mounting portion The other of the third bicycle facing outward surface facing the inner surface and the third sprocket mounting portion. 如請求項3之多重自行車鏈輪總成，其中 該鏈輪支撐部件進一步包含：一第四鏈輪安裝部分，其沿該軸向方向與該第三鏈輪安裝部分間隔開；及一第三連接部分，其互連該第三鏈輪安裝部分與該第四鏈輪安裝部分； 該第四鏈輪安裝部分具有一第四自行車面朝內表面及沿該軸向方向與該第四自行車面朝內表面相對之一第四自行車面朝外表面；且 該多重自行車鏈輪總成進一步包括： 一第七鏈輪，其包含一第七鏈輪主體及相對於該旋轉中心軸自該第七鏈輪主體徑向朝外延伸之複數個第七鏈輪齒， 該第七鏈輪係與該鏈輪支撐部件分離之一部件，該第七鏈輪主體耦合至該第四鏈輪安裝部分之該第四自行車面朝內表面及該第四鏈輪安裝部分之該第四自行車面朝外表面中之一者； 一第八鏈輪，其包含一第八鏈輪主體及相對於該旋轉中心軸自該第八鏈輪主體徑向朝外延伸之複數個第八鏈輪齒， 該第八鏈輪係與該鏈輪支撐部件分離之一部件，該第八鏈輪主體耦合至該第四鏈輪安裝部分之該第四自行車面朝內表面及該第四鏈輪安裝部分之該第四自行車面朝外表面中之另一者。The multiple bicycle sprocket assembly of claim 3, wherein the sprocket support member further comprises: a fourth sprocket mounting portion spaced apart from the third sprocket mounting portion in the axial direction; and a third a connecting portion interconnecting the third sprocket mounting portion and the fourth sprocket mounting portion; the fourth sprocket mounting portion having a fourth bicycle facing inner surface and the fourth bicycle surface along the axial direction The inwardly facing surface is opposite to the fourth bicycle facing outward surface; and the multiple bicycle sprocket assembly further includes: a seventh sprocket including a seventh sprocket body and the seventh relative to the central axis of rotation a plurality of seventh sprocket teeth extending radially outwardly from the sprocket body, the seventh sprocket being separated from the sprocket support member by a component, the seventh sprocket body being coupled to the fourth sprocket mounting portion The fourth bicycle facing the inner surface and one of the fourth bicycle facing outward surfaces of the fourth sprocket mounting portion; an eighth sprocket including an eighth sprocket body and relative to the center of rotation The shaft is radial from the eighth sprocket body a plurality of eighth sprocket teeth extending outwardly, the eighth sprocket being separated from the sprocket support member, the eighth sprocket body being coupled to the fourth bicycle surface of the fourth sprocket mounting portion The inward facing surface and the other of the fourth bicycle facing outward surfaces of the fourth sprocket mounting portion. 如請求項2之多重自行車鏈輪總成，其中 該第一鏈輪安裝部分之至少一部分係相對於該旋轉中心軸而自該第二鏈輪安裝部分徑向朝外安置； 該第一鏈輪具有一第一總齒數目，且該第一鏈輪主體耦合至該第一鏈輪安裝部分之該第一自行車面朝內表面； 該第二鏈輪具有小於該第一總齒數目之一第二總齒數目，且該第二鏈輪主體耦合至該第一鏈輪安裝部分之該第一自行車面朝外表面； 該第三鏈輪具有小於該第二總齒數目之一第三總齒數目，且該第三鏈輪主體耦合至該第二鏈輪安裝部分之該第二自行車面朝內表面；且 該第四鏈輪具有小於該第三總齒數目之一第四總齒數目，且該第四鏈輪主體耦合至該第二鏈輪安裝部分之該第二自行車面朝外表面。The multiple bicycle sprocket assembly of claim 2, wherein at least a portion of the first sprocket mounting portion is disposed radially outward from the second sprocket mounting portion relative to the central axis of rotation; the first sprocket Having a first total number of teeth, and the first sprocket body is coupled to the first bicycle facing inner surface of the first sprocket mounting portion; the second sprocket has a number less than the first total number of teeth a total number of teeth, and the second sprocket body is coupled to the first bicycle facing outward surface of the first sprocket mounting portion; the third sprocket having a third total tooth smaller than the second total number of teeth a number, and the third sprocket body is coupled to the second bicycle facing inner surface of the second sprocket mounting portion; and the fourth sprocket has a fourth total number of teeth that is less than one of the third total number of teeth, And the fourth sprocket body is coupled to the second bicycle facing outward surface of the second sprocket mounting portion. 如請求項5之多重自行車鏈輪總成，其中 該第二鏈輪安裝部分之至少一部分係相對於該旋轉中心軸而自該第三鏈輪安裝部分徑向朝外安置； 該第五鏈輪具有小於第四總齒數目之一第五總齒數目，且該第五鏈輪主體耦合至該第三鏈輪安裝部分之該第三自行車面朝內表面；且 該第六鏈輪具有小於該第五總齒數目之一第六總齒數目，且該第六鏈輪主體耦合至該第三鏈輪安裝部分之該第三自行車面朝外表面。The multiple bicycle sprocket assembly of claim 5, wherein at least a portion of the second sprocket mounting portion is disposed radially outward from the third sprocket mounting portion relative to the central axis of rotation; the fifth sprocket Having a fifth total number of teeth that is less than one of the fourth total number of teeth, and the fifth sprocket body is coupled to the third bicycle facing inner surface of the third sprocket mounting portion; and the sixth sprocket has less than A sixth total number of teeth of one of the fifth total number of teeth, and the sixth sprocket body is coupled to the third bicycle facing outward surface of the third sprocket mounting portion. 如請求項6之多重自行車鏈輪總成，其中 該第三鏈輪安裝部分之至少一部分係相對於該旋轉中心軸而自該第四鏈輪安裝部分徑向朝外安置； 該第七鏈輪具有小於第六總齒數目之一第七總齒數目，且該第七鏈輪主體耦合至該第四鏈輪安裝部分之該第四自行車面朝內表面；且 該第八鏈輪具有小於該第七總齒數目之一第八總齒數目，且該第八鏈輪主體耦合至該第四鏈輪安裝部分之該第四自行車面朝外表面。The multiple bicycle sprocket assembly of claim 6, wherein at least a portion of the third sprocket mounting portion is disposed radially outward from the fourth sprocket mounting portion relative to the central axis of rotation; the seventh sprocket Having a seventh total number of teeth that is less than one of the sixth total number of teeth, and the seventh sprocket body is coupled to the fourth bicycle facing inner surface of the fourth sprocket mounting portion; and the eighth sprocket has less than An eighth total number of teeth of one of the seventh total number of teeth, and the eighth sprocket body is coupled to the fourth bicycle facing outward surface of the fourth sprocket mounting portion. 如請求項1至6中任一項之多重自行車鏈輪總成，其中： 該第一鏈輪具有一輪轂嚙合輪廓。The multiple bicycle sprocket assembly of any one of claims 1 to 6, wherein: the first sprocket has a hub engagement profile. 如請求項4之多重自行車鏈輪總成，其中 該第四鏈輪安裝部分具有一輪轂嚙合輪廓。A multiple bicycle sprocket assembly according to claim 4, wherein the fourth sprocket mounting portion has a hub engagement profile. 如請求項2之多重自行車鏈輪總成，其中 該第一鏈輪之該第一鏈輪主體藉由一第一緊固部件而耦合至該鏈輪支撐部件之該第一鏈輪安裝部分之該第一自行車面朝內表面，該第一緊固部件係與該鏈輪支撐部件、該第一鏈輪及該第二鏈輪分離之一部件。The multiple bicycle sprocket assembly of claim 2, wherein the first sprocket body of the first sprocket is coupled to the first sprocket mounting portion of the sprocket support member by a first fastening member The first bicycle faces the inner surface, and the first fastening component is separated from the sprocket support member, the first sprocket and the second sprocket. 如請求項10之多重自行車鏈輪總成，其中 該第二鏈輪之該第二鏈輪主體藉由該第一緊固部件而耦合至該鏈輪支撐部件之該第一鏈輪安裝部分之該第一自行車面朝外表面。The multiple bicycle sprocket assembly of claim 10, wherein the second sprocket body of the second sprocket is coupled to the first sprocket mounting portion of the sprocket support member by the first fastening member The first bicycle faces the outer surface. 如請求項2之多重自行車鏈輪總成，其中 該第三鏈輪之該第三鏈輪主體藉由一第二緊固部件而耦合至該鏈輪支撐部件之該第二鏈輪安裝部分之該第二自行車面朝內表面，該第二緊固部件係與該鏈輪支撐部件、該第三鏈輪及該第四鏈輪分離之一部件。The multiple bicycle sprocket assembly of claim 2, wherein the third sprocket body of the third sprocket is coupled to the second sprocket mounting portion of the sprocket support member by a second fastening member The second bicycle faces the inner surface, and the second fastening component is separated from the sprocket support member, the third sprocket and the fourth sprocket. 如請求項12之多重自行車鏈輪總成，其中 該第四鏈輪之該第四鏈輪主體藉由該第二緊固部件而耦合至該鏈輪支撐部件之該第二鏈輪安裝部分之該第二自行車面朝外表面。The multiple bicycle sprocket assembly of claim 12, wherein the fourth sprocket body of the fourth sprocket is coupled to the second sprocket mounting portion of the sprocket support member by the second fastening member The second bicycle faces the outer surface. 如請求項3之多重自行車鏈輪總成，其中 該第五鏈輪之該第五鏈輪主體藉由一第三緊固部件而耦合至該鏈輪支撐部件之該第三鏈輪安裝部分之該第三自行車面朝內表面，該第三緊固部件係與該鏈輪支撐部件、該第五鏈輪及該第六鏈輪分離之一部件。The multiple bicycle sprocket assembly of claim 3, wherein the fifth sprocket body of the fifth sprocket is coupled to the third sprocket mounting portion of the sprocket support member by a third fastening member The third bicycle faces the inner surface, and the third fastening component is separated from the sprocket support member, the fifth sprocket and the sixth sprocket. 如請求項14之多重自行車鏈輪總成，其中 該第六鏈輪之該第六鏈輪主體藉由該第三緊固部件而耦合至該鏈輪支撐部件之該第三鏈輪安裝部分之該第三自行車面朝外表面。The multiple bicycle sprocket assembly of claim 14, wherein the sixth sprocket body of the sixth sprocket is coupled to the third sprocket mounting portion of the sprocket support member by the third fastening member The third bicycle faces the outer surface. 如請求項4之多重自行車鏈輪總成，其中 該第七鏈輪之該第七鏈輪主體藉由一第四緊固部件而耦合至該鏈輪支撐部件之該第四鏈輪安裝部分之該第四自行車面朝內表面，該第四緊固部件係與該鏈輪支撐部件、該第七鏈輪及該第八鏈輪分離之一部件。The multiple bicycle sprocket assembly of claim 4, wherein the seventh sprocket body of the seventh sprocket is coupled to the fourth sprocket mounting portion of the sprocket support member by a fourth fastening member The fourth bicycle faces the inner surface, and the fourth fastening component is separated from the sprocket support member, the seventh sprocket and the eighth sprocket. 如請求項16之多重自行車鏈輪總成，其中 該第八鏈輪之該第八鏈輪主體藉由該第四緊固部件而耦合至該鏈輪支撐部件之該第四鏈輪安裝部分之該第四自行車面朝外表面。The multiple bicycle sprocket assembly of claim 16, wherein the eighth sprocket body of the eighth sprocket is coupled to the fourth sprocket mounting portion of the sprocket support member by the fourth fastening member The fourth bicycle faces the outer surface. 如請求項10至17中任一項之多重自行車鏈輪總成，其中 該第一緊固部件 該第二緊固部件 該第三緊固部件及 該第四緊固部件當中之一或多者包含一鉚釘及/或黏合劑。The multiple bicycle sprocket assembly of any one of claims 10 to 17, wherein the first fastening component, the second fastening component, the one or more of the third fastening component and the fourth fastening component Contains a rivet and / or adhesive. 如請求項1至7及9至17中任一項之多重自行車鏈輪總成，其中 該第一連接部分藉由使該鏈輪支撐部件變形而相對於該第一鏈輪安裝部分及該第二鏈輪安裝部分不平行地延伸。The multiple bicycle sprocket assembly according to any one of claims 1 to 7 and 9 to 17, wherein the first connecting portion is opposite to the first sprocket mounting portion and the first portion by deforming the sprocket supporting member The two sprocket mounting portions do not extend in parallel. 如請求項1至2、5至7及10至13中任一項之多重自行車鏈輪總成，其中 該鏈輪支撐部件進一步包含：一第三鏈輪安裝部分，其沿該軸向方向與該第二鏈輪安裝部分間隔開；及一第二連接部分，其互連該第二鏈輪安裝部分與該第三鏈輪安裝部分；且 該第二連接部分藉由使該鏈輪支撐部件變形而相對於該第二鏈輪安裝部分及該第三鏈輪安裝部分不平行地延伸。The multiple bicycle sprocket assembly of any one of claims 1 to 2, 5 to 7 and 10 to 13, wherein the sprocket support member further comprises: a third sprocket mounting portion along the axial direction The second sprocket mounting portion is spaced apart; and a second connecting portion interconnecting the second sprocket mounting portion and the third sprocket mounting portion; and the second connecting portion is configured by the sprocket supporting member The deformation extends non-parallel with respect to the second sprocket mounting portion and the third sprocket mounting portion. 5至7及10至15中任一項之多重自行車鏈輪總成，其中 該鏈輪支撐部件進一步包含：一第四鏈輪安裝部分，其沿該軸向方向與該第三鏈輪安裝部分間隔開；及一第三連接部分，其互連該第三鏈輪安裝部分與該第四鏈輪安裝部分；且 該第三連接部分藉由使該鏈輪支撐部件變形而相對於該第三鏈輪安裝部分及該第四鏈輪安裝部分不平行地延伸。The multiple bicycle sprocket assembly of any one of 5 to 7 and 10 to 15, wherein the sprocket support member further comprises: a fourth sprocket mounting portion along the axial direction and the third sprocket mounting portion And a third connecting portion interconnecting the third sprocket mounting portion and the fourth sprocket mounting portion; and the third connecting portion is opposite to the third by deforming the sprocket supporting member The sprocket mounting portion and the fourth sprocket mounting portion do not extend in parallel. 如請求項1至7及9至17中任一項之多重自行車鏈輪總成，其中 該第一鏈輪安裝部分包含一第一基座部分及至少一個第一安裝突片。The multiple bicycle sprocket assembly of any one of claims 1 to 7 and 9 to 17, wherein the first sprocket mounting portion includes a first base portion and at least one first mounting tab. 如請求項22之多重自行車鏈輪總成，其中 該第二鏈輪安裝部分包含一第二基座部分及至少一個第二安裝突片，特定而言 該至少一個第一安裝突片相對於該旋轉中心軸而沿一圓周方向自該至少一個第二安裝突片偏移。The multiple bicycle sprocket assembly of claim 22, wherein the second sprocket mounting portion includes a second base portion and at least one second mounting tab, in particular the at least one first mounting tab relative to the The central axis is rotated to be offset from the at least one second mounting tab in a circumferential direction. 如請求項23之多重自行車鏈輪總成，其中 該鏈輪支撐部件進一步包含沿該軸向方向與該第二鏈輪安裝部分間隔開之一第三鏈輪安裝部分；且 該第三鏈輪安裝部分包含一第三基座部分及至少一個第三安裝突片，特定而言 該至少一個第一安裝突片、該至少一個第二安裝突片及該至少一個第三安裝突片相對於該旋轉中心軸而沿一圓周方向自彼此偏移。The multiple bicycle sprocket assembly of claim 23, wherein the sprocket support member further comprises a third sprocket mounting portion spaced apart from the second sprocket mounting portion in the axial direction; and the third sprocket The mounting portion includes a third base portion and at least one third mounting tab, in particular the at least one first mounting tab, the at least one second mounting tab, and the at least one third mounting tab relative to the The central axes are rotated and offset from each other in a circumferential direction. 如請求項24之多重自行車鏈輪總成，其中 該鏈輪支撐部件進一步包含沿該軸向方向與該第三鏈輪安裝部分間隔開之一第四鏈輪安裝部分；且 該第四鏈輪安裝部分包含一第四基座部分及至少一個第四安裝突片，特定而言 該至少一個第一安裝突片、該至少一個第二安裝突片、該至少一個第三安裝突片及該至少一個第四安裝突片相對於該旋轉中心軸而沿一圓周方向自彼此偏移。The multiple bicycle sprocket assembly of claim 24, wherein the sprocket support member further comprises a fourth sprocket mounting portion spaced apart from the third sprocket mounting portion in the axial direction; and the fourth sprocket The mounting portion includes a fourth base portion and at least one fourth mounting tab, in particular the at least one first mounting tab, the at least one second mounting tab, the at least one third mounting tab, and the at least A fourth mounting tab is offset from each other in a circumferential direction with respect to the central axis of rotation.
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