TWI814164B - Bicycle chain - Google Patents

Bicycle chain Download PDF

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Publication number
TWI814164B
TWI814164B TW110145436A TW110145436A TWI814164B TW I814164 B TWI814164 B TW I814164B TW 110145436 A TW110145436 A TW 110145436A TW 110145436 A TW110145436 A TW 110145436A TW I814164 B TWI814164 B TW I814164B
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TW
Taiwan
Prior art keywords
inner link
link
end portion
chain
central axis
Prior art date
Application number
TW110145436A
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Chinese (zh)
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TW202212710A (en
Inventor
福森毅
江村篤裕
Original Assignee
日商島野股份有限公司
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Priority claimed from US15/672,229 external-priority patent/US11078987B2/en
Priority claimed from US15/672,232 external-priority patent/US10480617B2/en
Priority claimed from US15/719,576 external-priority patent/US10618598B2/en
Application filed by 日商島野股份有限公司 filed Critical 日商島野股份有限公司
Publication of TW202212710A publication Critical patent/TW202212710A/en
Application granted granted Critical
Publication of TWI814164B publication Critical patent/TWI814164B/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/02—Driving-chains
    • F16G13/06—Driving-chains with links connected by parallel driving-pins with or without rollers so called open links
    • 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
    • B62M2009/005—Details of transmission chains specially adapted for bicycles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Transmissions By Endless Flexible Members (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Gears, Cams (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)

Abstract

A bicycle chain comprises a first inner link plate and a first inner link plate. The first inner link plate comprises a first inner-link end portion, a second inner-link end portion, and a first inner-link intermediate portion. The second inner link plate comprises a third inner-link end portion, a fourth inner-link end portion, and a second inner-link intermediate portion. A first inner-link end edge has a first chamfer extending about the first inner-link center axis such that a part of the first chamfer is disposed in a first circumferential area defined from a first inner-link longitudinal centerline to a first reference line when viewed in an axial direction of the first inner-link center axis. The first circumferential area is smaller than 14 degrees.

Description

自行車鏈條bicycle chain

本發明係關於一種自行車鏈條。The invention relates to a bicycle chain.

騎自行車正成為一種愈來愈受歡迎的娛樂形式以及一種交通方式。此外，騎自行車已成為業餘愛好者及專業人士兩者之一非常受歡迎的競技運動。無論自行車是否用於娛樂、交通或競技，自行車產業在不斷改良自行車之各種組件。已被廣泛重新設計之一自行車組件係一鏈條。Cycling is becoming an increasingly popular form of recreation as well as a mode of transportation. Additionally, cycling has become a very popular competitive sport among both amateurs and professionals. Whether the bicycle is used for recreation, transportation or competition, the bicycle industry is constantly improving the various components of the bicycle. One of the bicycle components that has been extensively redesigned is the chain.

根據本發明之一第一態樣，一種自行車鏈條包括一第一內鏈板及一第二內鏈板。該第一內鏈板包括一第一內鏈端部部分、一第二內鏈端部部分及一第一內鏈中間部分。該第一內鏈端部部分包含具有一第一內鏈中心軸線之一第一內鏈開口。該第二內鏈端部部分包含具有平行該第一內鏈中心軸線延伸之一第二內鏈中心軸線之一第二內鏈開口。該第二內鏈中心軸線在一第一內鏈縱向方向上與該第一內鏈中心軸線間隔開。該第一內鏈中間部分使該第一內鏈端部部分及該第二內鏈端部部分互連。該第一內鏈端部部分、該第二內鏈端部部分及該第一內鏈中間部分界定一第一內鏈外周邊邊緣。該第一內鏈外周邊邊緣包括一第一內鏈端部邊緣、一第二內鏈端部邊緣及一對第一內鏈中間邊緣。該第一內鏈端部邊緣圍繞該第一內鏈端部部分延伸。該第二內鏈端部邊緣圍繞該第二內鏈端部部分延伸。該對第一內鏈中間邊緣沿該第一內鏈端部邊緣與該第二內鏈端部邊緣之間的該第一內鏈中間部分延伸。該第二內鏈板包括一第三內鏈端部部分、一第四內鏈端部部分及一第二內鏈中間部分。該第三內鏈端部部分包含具有延伸穿過該第一內鏈開口之一第三內鏈中心軸線之一第三內鏈開口。該第四內鏈端部部分包含具有延伸穿過該第二內鏈開口之一第四內鏈中心軸線之一第四內鏈開口。該第四內鏈中心軸線在一第二內鏈縱向方向上與該第三內鏈中心軸線間隔開。該第二內鏈中間部分使該第三內鏈端部部分及該第四內鏈端部部分互連。該第三內鏈端部部分、該第四內鏈端部部分及該第二內鏈中間部分界定一第二內鏈外周邊邊緣。該第二內鏈外周邊邊緣包括一第三內鏈端部邊緣、一第四內鏈端部邊緣及一對第二內鏈中間邊緣。該第三內鏈端部邊緣圍繞該第三內鏈端部部分延伸。該第四內鏈端部邊緣圍繞該第四內鏈端部部分延伸。該對第二內鏈中間邊緣沿該第三內鏈端部邊緣與該第四內鏈端部邊緣之間的該第二內鏈中間部分延伸。一第一最大距離界定為在該第一內鏈縱向方向上自該第一內鏈中心軸線至該第一內鏈端部邊緣。一第三最大距離界定為在該第二內鏈縱向方向上自該第三內鏈中心軸線至該第三內鏈端部邊緣。一第四最大距離界定為在該第二內鏈縱向方向上自該第四內鏈中心軸線至該第四內鏈端部邊緣。該第一最大距離大於該第三最大距離。該第一內鏈端部邊緣具有圍繞該第一內鏈中心軸線延伸之一第一倒角，使得該第一倒角之一部分安置於一第一圓周區域中，當沿該第一內鏈中心軸線之一軸向方向觀看時，該第一圓周區域界定為自一第一內鏈縱向中心線至一第一參考線。該第一內鏈縱向中心線垂直於該第一內鏈中心軸線及該第二內鏈中心軸線。該第一參考線自該第一內鏈中心軸線向外徑向延伸。該第一圓周區域小於14度。According to a first aspect of the present invention, a bicycle chain includes a first inner link plate and a second inner link plate. The first inner link plate includes a first inner link end portion, a second inner link end portion and a first inner link middle portion. The first inner link end portion includes a first inner link opening having a first inner link central axis. The second inner link end portion includes a second inner link opening having a second inner link central axis extending parallel to the first inner link central axis. The second inner link central axis is spaced apart from the first inner link central axis in a first inner link longitudinal direction. The first inner link intermediate portion interconnects the first inner link end portion and the second inner link end portion. The first inner link end portion, the second inner link end portion and the first inner link intermediate portion define a first inner link outer peripheral edge. The first inner link outer peripheral edge includes a first inner link end edge, a second inner link end edge and a pair of first inner link middle edges. The first inner link end edge extends around the first inner link end portion. The second inner link end edge extends around the second inner link end portion. The pair of first inner link intermediate edges extend along the first inner link intermediate portion between the first inner link end edge and the second inner link end edge. The second inner link plate includes a third inner link end portion, a fourth inner link end portion and a second inner link middle portion. The third inner link end portion includes a third inner link opening having a third inner link central axis extending through the first inner link opening. The fourth inner link end portion includes a fourth inner link opening having a fourth inner link central axis extending through the second inner link opening. The fourth inner link central axis is spaced apart from the third inner link central axis in a second inner link longitudinal direction. The second inner link intermediate portion interconnects the third inner link end portion and the fourth inner link end portion. The third inner link end portion, the fourth inner link end portion and the second inner link middle portion define a second inner link outer peripheral edge. The second inner link outer peripheral edge includes a third inner link end edge, a fourth inner link end edge and a pair of second inner link middle edges. The third inner link end edge extends around the third inner link end portion. The fourth inner link end edge extends around the fourth inner link end portion. The pair of second inner link intermediate edges extend along the second inner link intermediate portion between the third inner link end edge and the fourth inner link end edge. A first maximum distance is defined from the central axis of the first inner link to the end edge of the first inner link in the longitudinal direction of the first inner link. A third maximum distance is defined from the center axis of the third inner link to the end edge of the third inner link in the longitudinal direction of the second inner link. A fourth maximum distance is defined from the center axis of the fourth inner link to the end edge of the fourth inner link in the longitudinal direction of the second inner link. The first maximum distance is greater than the third maximum distance. The first inner link end edge has a first chamfer extending around the first inner link center axis such that a portion of the first chamfer is disposed in a first circumferential area when viewed along the first inner link center When viewed in one of the axial directions of the axis, the first circumferential area is defined from a first inner link longitudinal centerline to a first reference line. The first inner link longitudinal centerline is perpendicular to the first inner link center axis and the second inner link center axis. The first reference line extends radially outward from the first inner link central axis. The first circumferential area is less than 14 degrees.

就根據第一態樣之自行車鏈條而言，該第一倒角提高該自行車鏈條之換擋效能，此係因為該第一倒角之一部分安置於該第一圓周區域中。For the bicycle chain according to the first aspect, the first chamfer improves the shifting performance of the bicycle chain because a part of the first chamfer is disposed in the first circumferential area.

根據本發明之一第二態樣，根據第一態樣之自行車鏈條經構形使得當沿該軸線方向觀看時，該第一倒角與該第一內鏈縱向中心線重疊。According to a second aspect of the invention, a bicycle chain according to the first aspect is configured such that the first chamfer overlaps the longitudinal centerline of the first inner chain when viewed along the axial direction.

就根據第二態樣之自行車鏈條而言，該第一倒角進一步提高該自行車鏈條之換擋效能。For the bicycle chain according to the second aspect, the first chamfer further improves the shifting performance of the bicycle chain.

根據本發明之一第三態樣，根據第一態樣或第二態樣之自行車鏈條經構形使得該第一倒角圍繞該第一內鏈中心軸線自該對第一內鏈中間邊緣之一者延伸至該該對第一內鏈中間邊緣之另一者。According to a third aspect of the present invention, the bicycle chain according to the first aspect or the second aspect is configured such that the first chamfer extends from the center edge of the pair of first inner links around the central axis of the first inner chain. One extends to the other of the intermediate edges of the pair of first inner links.

就根據第三態樣之自行車鏈條而言，該第一倒角進一步提高該自行車鏈條之換擋效能。For the bicycle chain according to the third aspect, the first chamfer further improves the shifting performance of the bicycle chain.

根據本發明之一第四態樣，根據第一態樣至第三態樣之任一者之自行車鏈條經構形使得在其中該自行車鏈條安裝至一自行車車架之一狀態中，該第一內鏈板設置於該自行車車架與該第二內鏈板之間。According to a fourth aspect of the present invention, a bicycle chain according to any one of the first to third aspects is configured such that in a state in which the bicycle chain is mounted to a bicycle frame, the first The inner link plate is arranged between the bicycle frame and the second inner link plate.

就根據第四態樣之自行車鏈條而言，可使一前鏈輪總成中之換擋操作順利。As for the bicycle chain according to the fourth aspect, the shifting operation in a front sprocket assembly can be made smooth.

根據本發明之一第五態樣，根據第一態樣至第四態樣之任一者之自行車鏈條經構形使得該第一內鏈板包含面向該第二內鏈板之一第一內表面及在該軸向方向上設置於該第一內表面之一反面上之一第一外表面。一第一軸向厚度界定為相對於該第一內鏈端部部分自該第一外表面至該第一內表面。該第一軸向厚度等於或小於0.9 mm。According to a fifth aspect of the present invention, the bicycle chain according to any one of the first to fourth aspects is configured such that the first inner link plate includes a first inner link plate facing the second inner link plate. surface and a first outer surface disposed on an opposite surface of the first inner surface in the axial direction. A first axial thickness is defined relative to the first inner link end portion from the first outer surface to the first inner surface. The first axial thickness is equal to or less than 0.9 mm.

就根據第五態樣之自行車鏈條而言，可有效提高該自行車鏈條之換擋效能。As for the bicycle chain according to the fifth aspect, the shifting performance of the bicycle chain can be effectively improved.

根據本發明之一第六態樣，根據第一態樣至第五態樣之任一者之自行車鏈條經構形使得該第一內鏈端部部分具有一第一最小徑向距離及一第一最大徑向距離。該第一最小徑向距離界定為在垂直於該第一內鏈縱向方向及該第一內鏈中心軸線之一第一垂直方向上自該第一內鏈中心軸線至該第一內鏈端部邊緣。該第一最大徑向距離界定為在該第一內鏈縱向方向上自該第一內鏈中心軸線至該第一內鏈端部邊緣。該第一最大徑向距離大於該第一最小徑向距離。According to a sixth aspect of the present invention, a bicycle chain according to any one of the first to fifth aspects is configured such that the first inner chain end portion has a first minimum radial distance and a first a maximum radial distance. The first minimum radial distance is defined as from the first inner link central axis to the first inner link end in a first vertical direction perpendicular to the first inner link longitudinal direction and the first inner link central axis. edge. The first maximum radial distance is defined from the first inner link central axis to the first inner link end edge in the first inner link longitudinal direction. The first maximum radial distance is greater than the first minimum radial distance.

就根據第六態樣之自行車鏈條而言，可進一步提高該自行車鏈條之換擋效能。As for the bicycle chain according to the sixth aspect, the shifting performance of the bicycle chain can be further improved.

根據本發明之一第七態樣，根據第六態樣之自行車鏈條經構形使得該第一最小徑向距離等於或大於4.36 mm。According to a seventh aspect of the present invention, the bicycle chain according to the sixth aspect is configured such that the first minimum radial distance is equal to or greater than 4.36 mm.

就根據第七態樣之自行車鏈條而言，可進一步提高該自行車鏈條之換擋效能。As for the bicycle chain according to the seventh aspect, the shifting performance of the bicycle chain can be further improved.

根據本發明之一第八態樣，根據第一態樣至第五態樣之任一者之自行車鏈條經構形使得該第一內鏈端部部分具有界定為自該第一內鏈中心軸線至該第一內鏈端部邊緣之一第一徑向距離。該第一徑向距離等於或大於4.36 mm。According to an eighth aspect of the present invention, a bicycle chain according to any one of the first to fifth aspects is configured such that the first inner link end portion has a central axis defined from the first inner link A first radial distance to the first inner link end edge. The first radial distance is equal to or greater than 4.36 mm.

就根據第八態樣之自行車鏈條而言，可進一步提高該自行車鏈條之換擋效能。As for the bicycle chain according to the eighth aspect, the shifting performance of the bicycle chain can be further improved.

根據本發明之一第九態樣，根據第一態樣至第八態樣之任一者之自行車鏈條經構形使得該第一倒角具有在相對於該第一內鏈中心軸線之一徑向方向上界定之一第一徑向寬度。當沿該軸向方向觀看時，該第一徑向寬度自該對第一內鏈中間邊緣之一者朝向該第一內鏈縱向中心線增大。According to a ninth aspect of the present invention, the bicycle chain according to any one of the first to eighth aspects is configured such that the first chamfer has a diameter relative to the central axis of the first inner chain. defines a first radial width in the direction. The first radial width increases from one of the pair of first inner link intermediate edges toward the first inner link longitudinal centerline when viewed along the axial direction.

就根據第九態樣之自行車鏈條而言，可進一步提高該自行車鏈條之換擋效能。As for the bicycle chain according to the ninth aspect, the shifting performance of the bicycle chain can be further improved.

根據本發明之一第十態樣，根據第一態樣至第九態樣之任一者之自行車鏈條進一步包括一第一鏈條滾子，其包含一第一徑向外圓周表面及該第一徑向外圓周表面之徑向內之一第一徑向內圓周表面。該第一內鏈板包含一第一內表面及一第一外表面。該第一內表面面向該第二內鏈板。該第一外表面在該軸向方向上設置於該第一內表面之一反面上。該第一內鏈端部部分包含一第一管狀部分，其在該軸向方向上自該第一內表面延伸以支撐該第一鏈條滾子。當沿該第一內鏈中心軸線觀看時，該第一管狀部分包圍該第一內鏈開口。當該第一鏈條滾子在該第一內鏈縱向方向上朝向該第一內鏈端部部分移動直至該第一鏈條滾子之該第一徑向內圓周表面接觸該第一管狀部分時，一第一延伸距離在該第一內鏈縱向方向上界定於該第一倒角之一邊緣與該第一鏈條滾子之該第一徑向外圓周表面之一部分之間。該第一延伸距離在自0.95 mm至1.1 mm之範圍內。According to a tenth aspect of the present invention, the bicycle chain according to any one of the first to ninth aspects further includes a first chain roller including a first radial outer circumferential surface and the first A first radially inner circumferential surface radially inward of the radially outer circumferential surface. The first inner link plate includes a first inner surface and a first outer surface. The first inner surface faces the second inner link plate. The first outer surface is disposed on an opposite surface of the first inner surface in the axial direction. The first inner link end portion includes a first tubular portion extending from the first inner surface in the axial direction to support the first chain roller. The first tubular portion surrounds the first inner link opening when viewed along the first inner link central axis. When the first chain roller moves toward the first inner link end portion in the first inner link longitudinal direction until the first radially inner circumferential surface of the first chain roller contacts the first tubular portion, A first extension distance is defined in the longitudinal direction of the first inner link between an edge of the first chamfer and a portion of the first radially outer circumferential surface of the first chain roller. The first extension distance is in the range from 0.95 mm to 1.1 mm.

就根據第十態樣之自行車鏈條而言，可進一步提高該自行車鏈條之換擋效能。As for the bicycle chain according to the tenth aspect, the shifting performance of the bicycle chain can be further improved.

根據本發明之一第十一態樣，根據第一態樣至第十態樣之任一者之自行車鏈條經構形使得該第四內鏈端部邊緣具有圍繞該第四內鏈中心軸線延伸之一第四倒角。該第四倒角包含一階梯狀部分。According to an eleventh aspect of the present invention, the bicycle chain according to any one of the first to tenth aspects is configured such that the fourth inner link end edge has an edge extending around the fourth inner link central axis One fourth chamfer. The fourth chamfer includes a stepped portion.

就根據第十一態樣之自行車鏈條而言，可進一步提高該自行車鏈條之換擋效能。As for the bicycle chain according to the eleventh aspect, the shifting performance of the bicycle chain can be further improved.

根據本發明之一第十二態樣，根據第一態樣至第十一態樣之任一者之自行車鏈條經構形使得在其中該自行車鏈條與一鏈輪嚙合之一狀態中，當沿該軸向方向觀看時，該第一內鏈端部部分與該鏈輪之一齒重疊以提供一重疊區域。該重疊區域具有等於或大於0.45 mm之一最大圓周長度。According to a twelfth aspect of the present invention, a bicycle chain according to any one of the first to eleventh aspects is configured such that in a state in which the bicycle chain is engaged with a sprocket, when along the When viewed in the axial direction, the first inner link end portion overlaps a tooth of the sprocket to provide an overlap area. The overlapping area has a maximum circumferential length equal to or greater than 0.45 mm.

就根據第十二態樣之自行車鏈條而言，可提高鏈條保持效能。For the bicycle chain according to the twelfth aspect, the chain retention efficiency can be improved.

根據本發明之一第十三態樣，根據第十二態樣之自行車鏈條經構形使得該最大圓周長度等於或小於3 mm。According to a thirteenth aspect of the present invention, the bicycle chain according to the twelfth aspect is configured such that the maximum circumferential length is equal to or less than 3 mm.

就根據第十三態樣之自行車鏈條而言，可進一步提高鏈條保持效能。For the bicycle chain according to the thirteenth aspect, the chain retention efficiency can be further improved.

根據本發明之一第十四態樣，一種自行車鏈條包括一第一內鏈板、一第二內鏈板、一第一外鏈板及一第二外鏈板。該第一內鏈板包括一第一內鏈端部部分、一第二內鏈端部部分及一第一內鏈中間部分。該第一內鏈端部部分包含具有一第一內鏈中心軸線之一第一內鏈開口。該第二內鏈端部部分包含具有平行該第一內鏈中心軸線延伸之一第二內鏈中心軸線之一第二內鏈開口。該第二內鏈中心軸線在一第一內鏈縱向方向上與該第一內鏈中心軸線間隔開。該第一內鏈中間部分使該第一內鏈端部部分及該第二內鏈端部部分互連。該第一內鏈端部部分、該第二內鏈端部部分及該第一內鏈中間部分界定一第一內鏈外周邊邊緣。該第一內鏈外周邊邊緣包括一第一內鏈端部邊緣、一第二內鏈端部邊緣及一對第一內鏈中間邊緣。該第一內鏈端部邊緣圍繞該第一內鏈端部部分延伸。該第二內鏈端部邊緣圍繞該第二內鏈端部部分延伸。該對第一內鏈中間邊緣沿該第一內鏈端部邊緣與該第二內鏈端部邊緣之間的該第一內鏈中間部分延伸。該第二內鏈板包括一第三內鏈端部部分、一第四內鏈端部部分及一第二內鏈中間部分。該第三內鏈端部部分包含具有延伸穿過該第一內鏈開口之一第三內鏈中心軸線之一第三內鏈開口。該第四內鏈端部部分包含具有延伸穿過該第二內鏈開口之一第四內鏈中心軸線之一第四內鏈開口。該第四內鏈中心軸線在一第二內鏈縱向方向上與該第三內鏈中心軸線間隔開。該第二內鏈中間部分使該第三內鏈端部部分及該第四內鏈端部部分互連。該第三內鏈端部部分、該第四內鏈端部部分及該第二內鏈中間部分界定一第二內鏈外周邊邊緣。該第二內鏈外周邊邊緣包括一第三內鏈端部邊緣、一第四內鏈端部邊緣及一對第二內鏈中間邊緣。該第三內鏈端部邊緣圍繞該第三內鏈端部部分延伸。該第四內鏈端部邊緣圍繞該第四內鏈端部部分延伸。該對第二內鏈中間邊緣沿該第三內鏈端部邊緣與該第四內鏈端部邊緣之間的該第二內鏈中間部分延伸。一第一最大距離界定為在該第一內鏈縱向方向上自該第一內鏈中心軸線至該第一內鏈端部邊緣。一第三最大距離界定為在該第二內鏈縱向方向上自該第三內鏈中心軸線至該第三內鏈端部邊緣。該第一最大距離大於該第三最大距離。在其中該自行車鏈條安裝至一自行車車架之一狀態中，該第一內鏈板設置於該自行車車架與該第二內鏈板之間。第一外鏈板包括一第一外鏈端部部分、一第二外鏈端部部分及一第一外鏈中間部分。該第一外鏈端部部分包含具有一第一外鏈中心軸線之一第一外鏈開口。該第二外鏈端部部分包含具有沿該第一外鏈中心軸線延伸之一第二外鏈中心軸線之一第二外鏈開口。該第一外鏈中間部分使該第一外鏈端部部分及該第二外鏈端部部分互連。第二外鏈板包括一第三外鏈端部部分、一第四外鏈端部部分及一第二外鏈中間部分及一凸出部分。該第三外鏈端部部分包含具有延伸穿過該第一外鏈開口之一第三外鏈中心軸線之一第三外鏈開口。該第四外鏈端部部分包含具有延伸穿過該第二外鏈開口之一第四外鏈中心軸線之一第四外鏈開口。該第二外鏈中間部分使該第三外鏈端部部分及該第四外鏈端部部分互連。該凸出部分自該第二外鏈中間部分朝向該第一外鏈中間部分延伸。該第一內鏈板在該第一內鏈中心軸線之一軸向方向上設置於該第一外鏈板與該第二內鏈板之間。該第二內鏈板在該軸向方向上設置於該第一內鏈板與該第二外鏈板之間。According to a fourteenth aspect of the present invention, a bicycle chain includes a first inner link plate, a second inner link plate, a first outer link plate and a second outer link plate. The first inner link plate includes a first inner link end portion, a second inner link end portion and a first inner link middle portion. The first inner link end portion includes a first inner link opening having a first inner link central axis. The second inner link end portion includes a second inner link opening having a second inner link central axis extending parallel to the first inner link central axis. The second inner link central axis is spaced apart from the first inner link central axis in a first inner link longitudinal direction. The first inner link intermediate portion interconnects the first inner link end portion and the second inner link end portion. The first inner link end portion, the second inner link end portion and the first inner link intermediate portion define a first inner link outer peripheral edge. The first inner link outer peripheral edge includes a first inner link end edge, a second inner link end edge and a pair of first inner link middle edges. The first inner link end edge extends around the first inner link end portion. The second inner link end edge extends around the second inner link end portion. The pair of first inner link intermediate edges extend along the first inner link intermediate portion between the first inner link end edge and the second inner link end edge. The second inner link plate includes a third inner link end portion, a fourth inner link end portion and a second inner link middle portion. The third inner link end portion includes a third inner link opening having a third inner link central axis extending through the first inner link opening. The fourth inner link end portion includes a fourth inner link opening having a fourth inner link central axis extending through the second inner link opening. The fourth inner link central axis is spaced apart from the third inner link central axis in a second inner link longitudinal direction. The second inner link intermediate portion interconnects the third inner link end portion and the fourth inner link end portion. The third inner link end portion, the fourth inner link end portion and the second inner link middle portion define a second inner link outer peripheral edge. The second inner link outer peripheral edge includes a third inner link end edge, a fourth inner link end edge and a pair of second inner link middle edges. The third inner link end edge extends around the third inner link end portion. The fourth inner link end edge extends around the fourth inner link end portion. The pair of second inner link intermediate edges extend along the second inner link intermediate portion between the third inner link end edge and the fourth inner link end edge. A first maximum distance is defined from the central axis of the first inner link to the end edge of the first inner link in the longitudinal direction of the first inner link. A third maximum distance is defined from the center axis of the third inner link to the end edge of the third inner link in the longitudinal direction of the second inner link. The first maximum distance is greater than the third maximum distance. In a state in which the bicycle chain is mounted to a bicycle frame, the first inner link plate is disposed between the bicycle frame and the second inner link plate. The first outer link plate includes a first outer link end portion, a second outer link end portion and a first outer link middle portion. The first outer link end portion includes a first outer link opening having a first outer link central axis. The second outer link end portion includes a second outer link opening having a second outer link central axis extending along the first outer link central axis. The first outer link intermediate portion interconnects the first outer link end portion and the second outer link end portion. The second outer link plate includes a third outer link end portion, a fourth outer link end portion, a second outer link middle portion and a protruding portion. The third outer link end portion includes a third outer link opening having a third outer link central axis extending through the first outer link opening. The fourth outer link end portion includes a fourth outer link opening having a fourth outer link central axis extending through the second outer link opening. The second outer link intermediate portion interconnects the third outer link end portion and the fourth outer link end portion. The protruding portion extends from the second outer link middle portion toward the first outer link middle portion. The first inner link plate is disposed between the first outer link plate and the second inner link plate in an axial direction of the first inner link central axis. The second inner link plate is disposed between the first inner link plate and the second outer link plate in the axial direction.

就根據第十四態樣之自行車鏈條而言，可提高鏈條保持效能。For the bicycle chain according to the fourteenth aspect, the chain retention efficiency can be improved.

根據本發明之一第十五態樣，根據第十四態樣之自行車鏈條經構形使得該第一外鏈板不具有在該軸向方向上自該第一外鏈中間部分朝向該第二外鏈中間部分延伸之一凸出部分。According to a fifteenth aspect of the present invention, the bicycle chain according to the fourteenth aspect is configured such that the first outer link plate does not have an axial direction from the first outer link middle portion toward the second A protruding part extending from the middle part of the outer chain.

就根據第十五態樣之自行車鏈條而言，可進一步提高鏈條保持效能。For the bicycle chain according to the fifteenth aspect, the chain retention efficiency can be further improved.

根據本發明之一第十六態樣，根據第十四態樣或第十五態樣之自行車鏈條經構形使得該第一外鏈中間部分包含在該軸向方向上面向該第二外鏈中間部分之一第一外鏈中間表面。該第二外鏈中間部分包含在該軸向方向上面向該第一外鏈中間部分之一第二外鏈中間表面。該凸出部分在該軸向方向上自該第二外鏈中間表面朝向該第一外鏈中間表面延伸。According to a sixteenth aspect of the present invention, a bicycle chain according to the fourteenth aspect or the fifteenth aspect is configured such that the first outer chain middle portion includes the first outer chain facing the second outer chain in the axial direction. One of the first outer links of the middle section has a middle surface. The second outer link intermediate portion includes a second outer link intermediate surface facing the first outer link intermediate portion in the axial direction. The protruding portion extends in the axial direction from the second outer link intermediate surface toward the first outer link intermediate surface.

就根據第十六態樣之自行車鏈條而言，可進一步提高鏈條保持效能。For the bicycle chain according to the sixteenth aspect, the chain retention efficiency can be further improved.

根據本發明之一第十七態樣，一種自行車鏈條包括一第一內鏈板及一第二內鏈板。該第一內鏈板包括一第一內鏈端部部分、一第二內鏈端部部分及一第一內鏈中間部分。該第一內鏈端部部分包含具有一第一內鏈中心軸線之一第一內鏈開口。該第二內鏈端部部分包含具有平行該第一內鏈中心軸線延伸之一第二內鏈中心軸線之一第二內鏈開口。該第二內鏈中心軸線在一第一內鏈縱向方向上與該第一內鏈中心軸線間隔開。該第一內鏈中間部分使該第一內鏈端部部分及該第二內鏈端部部分互連。該第二內鏈板包括一第三內鏈端部部分、一第四內鏈端部部分及一第二內鏈中間部分。該第三內鏈端部部分包含具有延伸穿過該第一內鏈開口之一第三內鏈中心軸線之一第三內鏈開口。該第四內鏈端部部分包含具有延伸穿過該第二內鏈開口之一第四內鏈中心軸線之一第四內鏈開口。該第四內鏈中心軸線在一第二內鏈縱向方向上與該第三內鏈中心軸線間隔開。該第二內鏈中間部分使該第三內鏈端部部分及該第四內鏈端部部分互連。該第一內鏈板包含一第一內表面及一第一外表面。該第一內表面面向該第二內鏈板。該第一外表面在該軸向方向上設置於該第一內表面之一反面上。一第一軸向厚度界定為相對於該第一內鏈端部部分自該第一外表面至該第一內表面。該第一軸向厚度等於或小於0.79 mm。According to a seventeenth aspect of the present invention, a bicycle chain includes a first inner link plate and a second inner link plate. The first inner link plate includes a first inner link end portion, a second inner link end portion and a first inner link middle portion. The first inner link end portion includes a first inner link opening having a first inner link central axis. The second inner link end portion includes a second inner link opening having a second inner link central axis extending parallel to the first inner link central axis. The second inner link central axis is spaced apart from the first inner link central axis in a first inner link longitudinal direction. The first inner link intermediate portion interconnects the first inner link end portion and the second inner link end portion. The second inner link plate includes a third inner link end portion, a fourth inner link end portion and a second inner link middle portion. The third inner link end portion includes a third inner link opening having a third inner link central axis extending through the first inner link opening. The fourth inner link end portion includes a fourth inner link opening having a fourth inner link central axis extending through the second inner link opening. The fourth inner link central axis is spaced apart from the third inner link central axis in a second inner link longitudinal direction. The second inner link intermediate portion interconnects the third inner link end portion and the fourth inner link end portion. The first inner link plate includes a first inner surface and a first outer surface. The first inner surface faces the second inner link plate. The first outer surface is disposed on an opposite surface of the first inner surface in the axial direction. A first axial thickness is defined relative to the first inner link end portion from the first outer surface to the first inner surface. The first axial thickness is equal to or less than 0.79 mm.

就根據第十七態樣之自行車鏈條而言，可將一鏈輪之一齒順利***至該第一內鏈板與該第二內鏈板之間的一間隔中。此提高該自行車鏈條之換擋效能。Regarding the bicycle chain according to the seventeenth aspect, a tooth of a sprocket can be smoothly inserted into a space between the first inner link plate and the second inner link plate. This improves the shifting performance of the bicycle chain.

根據本發明之一第十八態樣，根據第十七態樣之自行車鏈條經構形使得該第一內鏈中間部分包含一凹入部分。一第二軸向厚度界定為相對於該第一內鏈中間部分自該第一外表面至該第一內表面。該第二軸向厚度小於該第一軸向厚度。According to an eighteenth aspect of the present invention, a bicycle chain according to the seventeenth aspect is configured such that the first inner chain middle portion includes a recessed portion. A second axial thickness is defined relative to the first inner link intermediate portion from the first outer surface to the first inner surface. The second axial thickness is smaller than the first axial thickness.

就根據第十八態樣之自行車鏈條而言，可提高換擋效能。For the bicycle chain according to the eighteenth aspect, the shifting efficiency can be improved.

根據本發明之一第十九態樣，一種自行車鏈條包括一第一內鏈板及一第二內鏈板。該第一內鏈板包括一第一內鏈端部部分、一第二內鏈端部部分及一第一內鏈中間部分。該第一內鏈端部部分包含具有一第一內鏈中心軸線之一第一內鏈開口。該第二內鏈端部部分包含具有平行該第一內鏈中心軸線延伸之一第二內鏈中心軸線之一第二內鏈開口。該第二內鏈中心軸線在一第一內鏈縱向方向上與該第一內鏈中心軸線間隔開。該第一內鏈中間部分使該第一內鏈端部部分及該第二內鏈端部部分互連。該第二內鏈板包括一第三內鏈端部部分、一第四內鏈端部部分及一第二內鏈中間部分。該第三內鏈端部部分包含具有延伸穿過該第一內鏈開口之一第三內鏈中心軸線之一第三內鏈開口。該第四內鏈端部部分包含具有延伸穿過該第二內鏈開口之一第四內鏈中心軸線之一第四內鏈開口。該第四內鏈中心軸線在一第二內鏈縱向方向上與該第三內鏈中心軸線間隔開。該第二內鏈中間部分使該第三內鏈端部部分及該第四內鏈端部部分互連。該第一內鏈板包含一第一內表面及一第一外表面。該第一內表面面向該第二內鏈板。該第一外表面在該第一內鏈中心軸線之一軸向方向上設置於該第一內表面之一反面上。該第二內鏈板包含一第二內表面及一第二外表面。該第二內表面面向該第一內鏈板。該第二外表面在該軸向方向上設置於該第二內表面之一反面上。一軸向距離界定為在該軸向方向上自該第一內鏈中間部分至該第二內鏈中間部分。該軸向距離在自2.1 mm至2.3 mm之範圍內。According to a nineteenth aspect of the present invention, a bicycle chain includes a first inner link plate and a second inner link plate. The first inner link plate includes a first inner link end portion, a second inner link end portion and a first inner link middle portion. The first inner link end portion includes a first inner link opening having a first inner link central axis. The second inner link end portion includes a second inner link opening having a second inner link central axis extending parallel to the first inner link central axis. The second inner link central axis is spaced apart from the first inner link central axis in a first inner link longitudinal direction. The first inner link intermediate portion interconnects the first inner link end portion and the second inner link end portion. The second inner link plate includes a third inner link end portion, a fourth inner link end portion and a second inner link middle portion. The third inner link end portion includes a third inner link opening having a third inner link central axis extending through the first inner link opening. The fourth inner link end portion includes a fourth inner link opening having a fourth inner link central axis extending through the second inner link opening. The fourth inner link central axis is spaced apart from the third inner link central axis in a second inner link longitudinal direction. The second inner link intermediate portion interconnects the third inner link end portion and the fourth inner link end portion. The first inner link plate includes a first inner surface and a first outer surface. The first inner surface faces the second inner link plate. The first outer surface is disposed on an opposite surface of the first inner surface in an axial direction of the first inner link central axis. The second inner link plate includes a second inner surface and a second outer surface. The second inner surface faces the first inner link plate. The second outer surface is disposed on an opposite surface of the second inner surface in the axial direction. An axial distance is defined in the axial direction from the first inner link intermediate portion to the second inner link intermediate portion. The axial distance ranges from 2.1 mm to 2.3 mm.

就根據第十九態樣之自行車鏈條而言，可提高該自行車鏈條之穩健性。As for the bicycle chain according to the nineteenth aspect, the stability of the bicycle chain can be improved.

根據本發明之一第二十態樣，根據第十九態樣之自行車鏈條經構形使得該軸向距離係2.2 mm。According to a twentieth aspect of the invention, a bicycle chain according to the nineteenth aspect is configured such that the axial distance is 2.2 mm.

就根據第二十態樣之自行車鏈條而言，可進一步提高該自行車鏈條之穩健性。As for the bicycle chain according to the twentieth aspect, the stability of the bicycle chain can be further improved.

現將參考附圖來描述(若干)實施例，其中相同元件符號標示所有各種圖式中之對應或相同元件。 第一實施例 Embodiments will now be described with reference to the accompanying drawings, wherein like reference numerals designate corresponding or identical elements throughout the various views. First embodiment

首先參考圖1，其繪示裝備有根據一第一實施例之一自行車鏈條12之一自行車10。自行車10包含一自行車車架B1、一手把B2、一車座B3及一傳動系B4。傳動系B4經構形以將騎乘者之踩踏力轉換成傳動力。自行車鏈條12係傳動系B4之一部分。傳動系B4亦包含一自行車曲柄總成B5、一後鏈輪B6、一前變速器B7及一後變速器B8。自行車曲柄總成B5包含一前鏈輪B51。自行車曲柄總成B5圍繞一旋轉中心軸線A1可旋轉地安裝於自行車車架B1之一底部托架上。後鏈輪B6圍繞一旋轉中心軸線A2可旋轉地安裝至自行車車架B1。自行車鏈條12配置於前鏈輪B51及後鏈輪B6上以延伸於前鏈輪B51與後鏈輪B6之間。前變速器B7及後變速器B8經構形及配置以藉由使自行車鏈條12沿自行車10之一橫向方向換擋來變速。前鏈輪B51亦可指稱一自行車鏈輪B51。後鏈輪B6亦可指稱一自行車鏈輪B6。Referring first to Figure 1, there is shown a bicycle 10 equipped with a bicycle chain 12 according to a first embodiment. The bicycle 10 includes a bicycle frame B1, a handlebar B2, a seat B3 and a transmission system B4. Drivetrain B4 is configured to convert the rider's pedaling force into transmission force. Bicycle chain is part of the 12-series drive train B4. The drive train B4 also includes a bicycle crank assembly B5, a rear sprocket B6, a front derailleur B7 and a rear derailleur B8. Bicycle crank assembly B5 includes a front sprocket B51. The bicycle crank assembly B5 is rotatably mounted on a bottom bracket of the bicycle frame B1 around a rotation center axis A1. The rear sprocket B6 is rotatably mounted to the bicycle frame B1 around a rotation center axis A2. The bicycle chain 12 is arranged on the front sprocket B51 and the rear sprocket B6 so as to extend between the front sprocket B51 and the rear sprocket B6. Front derailleur B7 and rear derailleur B8 are configured and arranged to shift gears by shifting bicycle chain 12 in a transverse direction of bicycle 10 . The front sprocket B51 may also refer to a bicycle sprocket B51. Rear sprocket B6 may also refer to a bicycle sprocket B6.

在本申請案中，以下方向性術語「前」、「後」、「向前」、「向後」、「左」、「右」、「橫向」、「向上」及「向下」以及任何其他類似方向性術語係指基於(例如)面向手把B2坐於自行車10之車座B3上之騎乘者所判定之方向。據此，此等術語在用於描述包含自行車鏈條12之自行車10時應被解釋為相對於一水平表面上之一直立騎乘位置中所使用之自行車10，如圖1中所繪示。此等術語在用於描述自行車鏈條12時應被解釋為相對於安裝於一水平表面上之一直立騎乘位置中所使用之自行車10上之自行車鏈條12，如圖1中所繪示。In this application, the following directional terms "front", "back", "forward", "backward", "left", "right", "lateral", "upward" and "downward" and any other Similar directional terms refer to the direction determined based on, for example, a rider sitting on the seat B3 of the bicycle 10 facing the handlebars B2. Accordingly, these terms when used to describe a bicycle 10 including a bicycle chain 12 should be interpreted relative to the bicycle 10 as used in an upright riding position on a horizontal surface, as illustrated in FIG. 1 . These terms when used to describe bicycle chain 12 should be interpreted with respect to bicycle chain 12 mounted on a horizontal surface on a bicycle 10 for use in an upright riding position, as illustrated in FIG. 1 .

如圖2及圖3中所見，自行車鏈條12包括一第一內鏈板14、一第二內鏈板16、一第一外鏈板18及一第二外鏈板20。在此實施例中，自行車鏈條12包括複數個第一內鏈板14、複數個第二內鏈板16、複數個第一外鏈板18及複數個第二外鏈板20。然而，第一內鏈板14之一總數、第二內鏈板16之一總數、第一外鏈板18之一總數及第二外鏈板20之一總數不受限於此實施例。自行車鏈條12具有自行車鏈條12在踩踏期間傳輸一踩踏力時所沿之一傳動方向DD。As seen in FIGS. 2 and 3 , the bicycle chain 12 includes a first inner link plate 14 , a second inner link plate 16 , a first outer link plate 18 and a second outer link plate 20 . In this embodiment, the bicycle chain 12 includes a plurality of first inner link plates 14 , a plurality of second inner link plates 16 , a plurality of first outer link plates 18 and a plurality of second outer link plates 20 . However, the total number of the first inner link plates 14 , the second inner link plates 16 , the first outer link plates 18 and the second outer link plates 20 are not limited to this embodiment. The bicycle chain 12 has a transmission direction DD along which the bicycle chain 12 transmits a pedaling force during pedaling.

如圖3中所見，在其中自行車鏈條12安裝至自行車車架B1之一狀態中，第一內鏈板14設置於自行車車架B1與第二內鏈板16之間。即，在其中自行車鏈條12與自行車鏈輪B51嚙合之一狀態中，第一內鏈板14設置於自行車車架B1與第二內鏈板16之間。在其中自行車鏈條12安裝至自行車車架B1之狀態中，第一外鏈板18設置於自行車車架B1與第二外鏈板20之間。然而，在其中自行車鏈條12安裝至自行車車架B1之狀態中，第二內鏈板16可設置於自行車車架B1與第一內鏈板14之間。在其中自行車鏈條12安裝至自行車車架B1之狀態中，第二外鏈板20設置於自行車車架B1與第一外鏈板18之間。As seen in FIG. 3 , in a state in which the bicycle chain 12 is mounted to the bicycle frame B1 , the first inner link plate 14 is provided between the bicycle frame B1 and the second inner link plate 16 . That is, in a state in which the bicycle chain 12 is engaged with the bicycle sprocket B51, the first inner link plate 14 is provided between the bicycle frame B1 and the second inner link plate 16. In a state in which the bicycle chain 12 is mounted to the bicycle frame B1, the first outer link plate 18 is provided between the bicycle frame B1 and the second outer link plate 20. However, in a state in which the bicycle chain 12 is mounted to the bicycle frame B1, the second inner link plate 16 may be disposed between the bicycle frame B1 and the first inner link plate 14. In a state in which the bicycle chain 12 is mounted to the bicycle frame B1, the second outer link plate 20 is provided between the bicycle frame B1 and the first outer link plate 18.

如圖3中所見，第一內鏈板14在第一內鏈中心軸線CA11之軸向方向D1上設置於第一外鏈板18與第二內鏈板16之間。第二內鏈板16在軸向方向D1上設置於第一內鏈板14與第二外鏈板20之間。然而，第二內鏈板16可在軸向方向D1上設置於第一外鏈板18與第一內鏈板14之間。第一內鏈板14可在軸向方向D1上設置於第二外鏈板20與第二內鏈板16之間。As seen in FIG. 3 , the first inner link plate 14 is disposed between the first outer link plate 18 and the second inner link plate 16 in the axial direction D1 of the first inner link central axis CA11 . The second inner link plate 16 is disposed between the first inner link plate 14 and the second outer link plate 20 in the axial direction D1. However, the second inner link plate 16 may be disposed between the first outer link plate 18 and the first inner link plate 14 in the axial direction D1. The first inner link plate 14 may be disposed between the second outer link plate 20 and the second inner link plate 16 in the axial direction D1.

第一內鏈板14包含一第一內表面14A及一第一外表面14B。第一內表面14A面向第二內鏈板16。第一外表面14B在軸向方向D1上設置於第一內表面14A之一反面上。The first inner link plate 14 includes a first inner surface 14A and a first outer surface 14B. The first inner surface 14A faces the second inner link plate 16 . The first outer surface 14B is disposed on an opposite surface of the first inner surface 14A in the axial direction D1.

第二內鏈板16包含一第二內表面16A及一第二外表面16B。第二內表面16A面向第一內鏈板14。第二外表面16B在軸向方向D1上設置於第二內表面16A之一反面上。The second inner link plate 16 includes a second inner surface 16A and a second outer surface 16B. The second inner surface 16A faces the first inner link plate 14 . The second outer surface 16B is disposed on an opposite surface of the second inner surface 16A in the axial direction D1.

第一外鏈板18包含一第三內表面18A及一第三外表面18B。第三內表面18A面向第二外鏈板20。第三外表面18B在軸向方向D1上設置於第三內表面18A之一反面上。The first outer link plate 18 includes a third inner surface 18A and a third outer surface 18B. The third inner surface 18A faces the second outer link plate 20 . The third outer surface 18B is provided on an opposite surface of the third inner surface 18A in the axial direction D1.

第二外鏈板20包含一第四內表面20A及一第四外表面20B。第四內表面20A面向第一外鏈板18。第四外表面20B在軸向方向D1上設置於第四內表面20A之一反面上。The second outer link plate 20 includes a fourth inner surface 20A and a fourth outer surface 20B. The fourth inner surface 20A faces the first outer link plate 18 . The fourth outer surface 20B is disposed on an opposite surface of the fourth inner surface 20A in the axial direction D1.

自行車鏈條12進一步包括一第一鏈銷22、一第二鏈銷24、一第一鏈條滾子26及一第二鏈條滾子28。第一內鏈板14及第二內鏈板16之一對置對藉由第一鏈銷22來圍繞一第一樞軸線PA1可樞轉地耦合至第一外鏈板18及第二外鏈板20之一對置對。內鏈板14及16之對置對藉由第二鏈銷24來圍繞一第二樞軸線PA2可樞轉地耦合至第一外鏈板18及第二外鏈板20之另一對置對。第一鏈銷22界定第一樞軸線PA1。第二鏈銷24界定第二樞軸線PA2。第一鏈條滾子26圍繞第一樞軸線PA1可旋轉地安裝至內鏈板14及16之對置對。第二鏈條滾子28圍繞第二樞軸線PA2可旋轉地安裝至內鏈板14及16之對置對。The bicycle chain 12 further includes a first chain pin 22 , a second chain pin 24 , a first chain roller 26 and a second chain roller 28 . An opposing pair of the first inner link plate 14 and the second inner link plate 16 is pivotably coupled to the first outer link plate 18 and the second outer link about a first pivot axis PA1 by a first link pin 22 One of the plates 20 is in an opposite pair. The opposed pair of inner link plates 14 and 16 are pivotably coupled to the other opposed pair of first outer link plate 18 and second outer link plate 20 by a second link pin 24 about a second pivot axis PA2. . The first chain pin 22 defines the first pivot axis PA1. The second chain pin 24 defines a second pivot axis PA2. A first chain roller 26 is rotatably mounted to the opposed pair of inner link plates 14 and 16 about a first pivot axis PA1. A second chain roller 28 is rotatably mounted to the opposed pair of inner link plates 14 and 16 about a second pivot axis PA2.

如圖2中所見，自行車鏈輪B51包含複數個第一齒TH1及複數個第二齒TH2。第一齒TH1嚙合於設置於第一內鏈板14與第二內鏈板16之間的一內鏈間隔SP1中。第二齒TH2嚙合於設置於第一外鏈板18與第二外鏈板20之間的一外鏈間隔SP2中。As seen in Figure 2, the bicycle sprocket B51 includes a plurality of first teeth TH1 and a plurality of second teeth TH2. The first teeth TH1 are engaged in an inner link space SP1 provided between the first inner link plate 14 and the second inner link plate 16 . The second teeth TH2 are engaged in an outer link space SP2 provided between the first outer link plate 18 and the second outer link plate 20 .

如圖4至圖8中所見，第一內鏈板14包括一第一內鏈端部部分30、一第二內鏈端部部分32及一第一內鏈中間部分34。第一內鏈端部部分30包含具有一第一內鏈中心軸線CA11之一第一內鏈開口36。第二內鏈端部部分32包含具有一第二內鏈中心軸線CA12之一第二內鏈開口38。第二內鏈中心軸線CA12平行第一內鏈中心軸線CA11延伸。第二內鏈中心軸線CA12在一第一內鏈縱向方向D21上與第一內鏈中心軸線CA11間隔開。第一內鏈中間部分34使第一內鏈端部部分30及第二內鏈端部部分32互連。如圖3中所見，第一鏈銷22延伸穿過第一內鏈開口36。第二鏈銷24延伸穿過第二內鏈開口38。第一內鏈端部部分30在傳動方向DD上設置於第二內鏈端部部分32之一下游側上。As seen in FIGS. 4 to 8 , the first inner link plate 14 includes a first inner link end portion 30 , a second inner link end portion 32 and a first inner link middle portion 34 . The first inner link end portion 30 includes a first inner link opening 36 having a first inner link central axis CA11. The second inner link end portion 32 includes a second inner link opening 38 having a second inner link central axis CA12. The second inner link central axis CA12 extends parallel to the first inner link central axis CA11. The second inner link central axis CA12 is spaced apart from the first inner link central axis CA11 in a first inner link longitudinal direction D21. The first inner link intermediate portion 34 interconnects the first inner link end portion 30 and the second inner link end portion 32 . As seen in FIG. 3 , the first link pin 22 extends through the first inner link opening 36 . The second link pin 24 extends through the second inner link opening 38 . The first inner chain end part 30 is arranged on a downstream side of the second inner chain end part 32 in the transmission direction DD.

如圖4中所見，第一內鏈端部部分30包含一第一管狀部分30A，其在軸向方向D1上自第一內表面14A延伸以支撐第一鏈條滾子26 (圖3)。第二內鏈端部部分32包含一第二管狀部分32A，其在軸向方向D1上自第一內表面14A延伸以支撐第二鏈條滾子28 (圖3)。As seen in Figure 4, the first inner link end portion 30 includes a first tubular portion 30A extending in the axial direction D1 from the first inner surface 14A to support the first chain roller 26 (Figure 3). The second inner link end portion 32 includes a second tubular portion 32A extending in the axial direction D1 from the first inner surface 14A to support the second chain roller 28 (Fig. 3).

如圖6中所見，當沿第一內鏈中心軸線CA11觀看時，第一管狀部分30A包圍第一內鏈開口36。當沿第二內鏈中心軸線CA12觀看時，第二管狀部分32A包圍第二內鏈開口38。第一管狀部分30A包含第一內鏈開口36。第二管狀部分32A包含第二內鏈開口38。As seen in Figure 6, the first tubular portion 30A surrounds the first inner link opening 36 when viewed along the first inner link central axis CA11. The second tubular portion 32A surrounds the second inner link opening 38 when viewed along the second inner link central axis CA12. The first tubular portion 30A contains a first inner link opening 36 . The second tubular portion 32A contains a second inner link opening 38 .

如圖7中所見，一第一軸向厚度T11界定為相對於第一內鏈端部部分30自第一外表面14B至第一內表面14A。第一軸向厚度T11等於或小於0.9 mm。更佳地，第一軸向厚度T11等於或小於0.79 mm。第一內鏈中間部分34包含一凹入部分34A。一第二軸向厚度T12界定為相對於第一內鏈中間部分34自第一外表面14B至第一內表面14A。第二軸向厚度T12小於第一軸向厚度T11。As seen in FIG. 7 , a first axial thickness T11 is defined relative to the first inner link end portion 30 from the first outer surface 14B to the first inner surface 14A. The first axial thickness T11 is equal to or less than 0.9 mm. More preferably, the first axial thickness T11 is equal to or less than 0.79 mm. The first inner link intermediate portion 34 includes a recessed portion 34A. A second axial thickness T12 is defined relative to the first inner link intermediate portion 34 from the first outer surface 14B to the first inner surface 14A. The second axial thickness T12 is smaller than the first axial thickness T11.

如圖9至圖13中所見，第二內鏈板16包括一第三內鏈端部部分40、一第四內鏈端部部分42及一第二內鏈中間部分44。第三內鏈端部部分40包含具有一第三內鏈中心軸線CA13之一第三內鏈開口46。第四內鏈端部部分42包含具有一第四內鏈中心軸線CA14之一第四內鏈開口48。第四內鏈中心軸線CA14在一第二內鏈縱向方向D22上與第三內鏈中心軸線CA13間隔開。第二內鏈中間部分44使第三內鏈端部部分40及第四內鏈端部部分42互連。As seen in FIGS. 9 to 13 , the second inner link plate 16 includes a third inner link end portion 40 , a fourth inner link end portion 42 and a second inner link middle portion 44 . The third inner link end portion 40 includes a third inner link opening 46 having a third inner link central axis CA13. The fourth inner link end portion 42 includes a fourth inner link opening 48 having a fourth inner link central axis CA14. The fourth inner link central axis CA14 is spaced apart from the third inner link central axis CA13 in a second inner link longitudinal direction D22. The second inner link intermediate portion 44 interconnects the third inner link end portion 40 and the fourth inner link end portion 42 .

如圖3中所見，第三內鏈中心軸線CA13延伸穿過第一內鏈開口36。第四內鏈中心軸線CA14延伸穿過第二內鏈開口38。第三內鏈中心軸線CA13實質上與第一內鏈中心軸線CA11重合。第四內鏈中心軸線CA14實質上與第二內鏈中心軸線CA12重合。然而，第三內鏈中心軸線CA13可自第一內鏈中心軸線CA11偏移。第四內鏈中心軸線CA14可自第二內鏈中心軸線CA12偏移。第三內鏈端部部分40在傳動方向DD上設置於第四內鏈端部部分42之一下游側上。As seen in Figure 3, the third inner link center axis CA13 extends through the first inner link opening 36. The fourth inner link central axis CA14 extends through the second inner link opening 38 . The third inner link central axis CA13 substantially coincides with the first inner link central axis CA11. The fourth inner link central axis CA14 substantially coincides with the second inner link central axis CA12. However, the third inner link center axis CA13 may be offset from the first inner link center axis CA11. The fourth inner link center axis CA14 may be offset from the second inner link center axis CA12. The third inner link end portion 40 is arranged on a downstream side of the fourth inner link end portion 42 in the transmission direction DD.

如圖10中所見，第三內鏈端部部分40包含一第三管狀部分40A，其在軸向方向D1上自第二內表面16A延伸以支撐第一鏈條滾子26 (圖3)。第四內鏈端部部分42包含一第四管狀部分42A，其在軸向方向D1上自第二內表面16A延伸以支撐第二鏈條滾子28 (圖3)。As seen in Figure 10, the third inner link end portion 40 includes a third tubular portion 40A extending in the axial direction D1 from the second inner surface 16A to support the first chain roller 26 (Figure 3). The fourth inner link end portion 42 includes a fourth tubular portion 42A extending in the axial direction D1 from the second inner surface 16A to support the second chain roller 28 (Fig. 3).

如圖13中所見，當沿第三內鏈中心軸線CA13觀看時，第三管狀部分40A包圍第三內鏈開口46。當沿第四內鏈中心軸線CA14觀看時，第四管狀部分42A包圍第四內鏈開口48。第三管狀部分40A包含第三內鏈開口46。第四管狀部分42A包含第四內鏈開口48。As seen in Figure 13, the third tubular portion 40A surrounds the third inner link opening 46 when viewed along the third inner link central axis CA13. The fourth tubular portion 42A surrounds the fourth inner link opening 48 when viewed along the fourth inner link central axis CA14. The third tubular portion 40A contains a third inner link opening 46 . The fourth tubular portion 42A contains a fourth inner link opening 48 .

如圖12中所見，一第三軸向厚度T21界定為相對於第三內鏈端部部分40自第二外表面16B至第二內表面16A。第二內鏈中間部分44包含一凹入部分44A。一第四軸向厚度T22界定為相對於第二內鏈中間部分44自第二外表面16B至第二內表面16A。第四軸向厚度T22小於第三軸向厚度T21。在此實施例中，第三軸向厚度T21實質上等於第一軸向厚度T11。然而，第三軸向厚度T21可不同於第一軸向厚度T11。As seen in FIG. 12 , a third axial thickness T21 is defined relative to the third inner link end portion 40 from the second outer surface 16B to the second inner surface 16A. The second inner link intermediate portion 44 includes a recessed portion 44A. A fourth axial thickness T22 is defined relative to the second inner link intermediate portion 44 from the second outer surface 16B to the second inner surface 16A. The fourth axial thickness T22 is smaller than the third axial thickness T21. In this embodiment, the third axial thickness T21 is substantially equal to the first axial thickness T11. However, the third axial thickness T21 may be different from the first axial thickness T11.

如圖14中所見，第一內鏈端部部分30、第二內鏈端部部分32及第一內鏈中間部分34界定一第一內鏈外周邊邊緣50。第一內鏈外周邊邊緣50包括一第一內鏈端部邊緣50A、一第二內鏈端部邊緣50B及一對第一內鏈中間邊緣50C。第一內鏈端部邊緣50A圍繞第一內鏈端部部分30延伸。第二內鏈端部邊緣50B圍繞第二內鏈端部部分32延伸。第一內鏈中間邊緣對50C沿第一內鏈端部邊緣50A與第二內鏈端部邊緣50B之間的第一內鏈中間部分34延伸。As seen in Figure 14, the first inner link end portion 30, the second inner link end portion 32, and the first inner link middle portion 34 define a first inner link outer peripheral edge 50. The first inner link outer peripheral edge 50 includes a first inner link end edge 50A, a second inner link end edge 50B and a pair of first inner link middle edges 50C. The first inner link end edge 50A extends around the first inner link end portion 30 . The second inner link end edge 50B extends around the second inner link end portion 32 . The first inner link intermediate edge pair 50C extends along the first inner link intermediate portion 34 between the first inner link end edge 50A and the second inner link end edge 50B.

如圖15中所見，第三內鏈端部部分40、第四內鏈端部部分42及第二內鏈中間部分44界定一第二內鏈外周邊邊緣52。第二內鏈外周邊邊緣52包括一第三內鏈端部邊緣52A、一第四內鏈端部邊緣52B及一對第二內鏈中間邊緣52C。第三內鏈端部邊緣52A圍繞第三內鏈端部部分40延伸。第四內鏈端部邊緣52B圍繞第四內鏈端部部分42延伸。第二內鏈中間邊緣對52C沿第三內鏈端部邊緣52A與第四內鏈端部邊緣52B之間的第二內鏈中間部分44延伸。As seen in Figure 15, the third inner link end portion 40, the fourth inner link end portion 42, and the second inner link intermediate portion 44 define a second inner link outer peripheral edge 52. The second inner link outer peripheral edge 52 includes a third inner link end edge 52A, a fourth inner link end edge 52B and a pair of second inner link intermediate edges 52C. The third inner link end edge 52A extends around the third inner link end portion 40 . A fourth inner link end edge 52B extends around the fourth inner link end portion 42 . The second inner link intermediate edge pair 52C extends along the second inner link intermediate portion 44 between the third inner link end edge 52A and the fourth inner link end edge 52B.

如圖14中所見，一第一最大距離MD11界定為在第一內鏈縱向方向D21上自第一內鏈中心軸線CA11至第一內鏈端部邊緣50A。一第二最大距離MD12界定為在第一內鏈縱向方向D21上自第二內鏈中心軸線CA12至第二內鏈端部邊緣50B。在此實施例中，第二最大距離MD12實質上等於第一最大距離MD11。然而，第二最大距離MD12可不同於第一最大距離MD11。As seen in FIG. 14 , a first maximum distance MD11 is defined from the first inner link central axis CA11 to the first inner link end edge 50A in the first inner link longitudinal direction D21 . A second maximum distance MD12 is defined from the second inner link central axis CA12 to the second inner link end edge 50B in the first inner link longitudinal direction D21. In this embodiment, the second maximum distance MD12 is substantially equal to the first maximum distance MD11. However, the second maximum distance MD12 may be different from the first maximum distance MD11.

如圖15中所見，一第三最大距離MD13界定為在第二內鏈縱向方向D22上自第三內鏈中心軸線CA13至第三內鏈端部邊緣52A。一第四最大距離MD14界定為在第二內鏈縱向方向D22上自第四內鏈中心軸線CA14至第四內鏈端部邊緣52B。As seen in Figure 15, a third maximum distance MD13 is defined from the third inner link center axis CA13 to the third inner link end edge 52A in the second inner link longitudinal direction D22. A fourth maximum distance MD14 is defined from the fourth inner link center axis CA14 to the fourth inner link end edge 52B in the second inner link longitudinal direction D22.

如圖14及圖15中所見，第一最大距離MD11大於第三最大距離MD13。第三最大距離MD13小於第四最大距離MD14。第四最大距離MD14實質上等於第一最大距離MD11及第二最大距離MD12。然而，第一最大距離MD11可實質上等於或小於第三最大距離MD13。第三最大距離MD13可實質上等於或大於第四最大距離MD14。第四最大距離MD14可不同於第一最大距離MD11及第二最大距離MD12之至少一者。As seen in FIGS. 14 and 15 , the first maximum distance MD11 is larger than the third maximum distance MD13 . The third maximum distance MD13 is smaller than the fourth maximum distance MD14. The fourth maximum distance MD14 is substantially equal to the first maximum distance MD11 and the second maximum distance MD12. However, the first maximum distance MD11 may be substantially equal to or smaller than the third maximum distance MD13. The third maximum distance MD13 may be substantially equal to or greater than the fourth maximum distance MD14. The fourth maximum distance MD14 may be different from at least one of the first maximum distance MD11 and the second maximum distance MD12.

如圖14中所見，第一內鏈板14具有在第一內鏈縱向方向D21上界定於第一內鏈端部邊緣50A與第二內鏈端部邊緣50B之間的一第一最大長度ML11。如圖15中所見，第二內鏈板16具有在第二內鏈縱向方向D22上界定於第三內鏈端部邊緣52A與第四內鏈端部邊緣52B之間的一第二最大長度ML12。如圖14及圖15中所見，第一最大長度ML11大於第二最大長度ML12。然而，第一最大長度ML11可等於或小於第二最大長度ML12。As seen in FIG. 14 , the first inner link plate 14 has a first maximum length ML11 defined between the first inner link end edge 50A and the second inner link end edge 50B in the first inner link longitudinal direction D21 . As seen in FIG. 15 , the second inner link plate 16 has a second maximum length ML12 defined between the third inner link end edge 52A and the fourth inner link end edge 52B in the second inner link longitudinal direction D22 . . As seen in Figures 14 and 15, the first maximum length ML11 is greater than the second maximum length ML12. However, the first maximum length ML11 may be equal to or less than the second maximum length ML12.

如圖14中所見，第一內鏈端部邊緣50A具有圍繞第一內鏈中心軸線CA11延伸之一第一倒角50A1，使得第一倒角50A1之一部分安置於一第一圓周區域AR11中。第一內鏈板14包括一第一內鏈縱向中心線CL11。當沿第一內鏈中心軸線CA11之軸向方向D1觀看時，第一圓周區域AR11界定為自一第一內鏈縱向中心線CL11至第一參考線RL11。第一內鏈縱向中心線CL11垂直於第一內鏈中心軸線CA11及第二內鏈中心軸線CA12。第一參考線RL11自第一內鏈中心軸線CA11向外徑向延伸。第一圓周區域AR11小於14度。As seen in Figure 14, the first inner link end edge 50A has a first chamfer 50A1 extending around the first inner link central axis CA11, such that a portion of the first chamfer 50A1 is disposed in a first circumferential area AR11. The first inner link plate 14 includes a first inner link longitudinal center line CL11. When viewed along the axial direction D1 of the first inner link center axis CA11, the first circumferential area AR11 is defined from a first inner link longitudinal centerline CL11 to the first reference line RL11. The first inner link longitudinal center line CL11 is perpendicular to the first inner link center axis CA11 and the second inner link center axis CA12. The first reference line RL11 extends radially outward from the first inner link central axis CA11. The first circumferential area AR11 is less than 14 degrees.

當沿軸向方向D1觀看時，第一倒角50A1與第一內鏈縱向中心線CL11重疊。第一倒角50A1圍繞第一內鏈中心軸線CA11自第一內鏈中間邊緣對50C之一者延伸至第一內鏈中間邊緣對50C之另一者。第一倒角50A1具有在相對於第一內鏈中心軸線CA11之一徑向方向上界定之一第一徑向寬度RW1。當沿軸向方向D1觀看時，第一徑向寬度RW1在自第一內鏈中間邊緣對50C之一者朝向第一內鏈縱向中心線CL11上係實質上恆定的。然而，當沿軸向方向D1觀看時，第一徑向寬度RW1可在自第一內鏈中間邊緣對50C之一者朝向第一內鏈縱向中心線CL11上為非恆定的。The first chamfer 50A1 overlaps the first inner link longitudinal centerline CL11 when viewed in the axial direction D1. The first chamfer 50A1 extends from one of the first inner link middle edge pair 50C to the other of the first inner link middle edge pair 50C around the first inner link central axis CA11. The first chamfer 50A1 has a first radial width RW1 defined in a radial direction relative to the first inner link central axis CA11. When viewed along the axial direction D1, the first radial width RW1 is substantially constant from one of the first pair of inner link intermediate edges 50C toward the first inner link longitudinal centerline CL11. However, when viewed along the axial direction D1, the first radial width RW1 may be non-constant from one of the first inner link intermediate edge pair 50C toward the first inner link longitudinal centerline CL11.

第一內鏈端部部分30具有一第一最小徑向距離MR11及一第一最大徑向距離MR12。第一最小徑向距離MR11界定為在垂直於第一內鏈縱向方向D21及第一內鏈中心軸線CA11之一第一垂直方向D31上自第一內鏈中心軸線CA11至第一內鏈端部邊緣50A。第一最大徑向距離MR12界定為在第一內鏈縱向方向D21上自第一內鏈中心軸線CA11至第一內鏈端部邊緣50A。第一最大徑向距離MR12等於或大於第一最小徑向距離MR11。第一最小徑向距離MR11等於或大於4.36 mm。第一最大徑向距離MR12較佳為4.75 mm。第一最大徑向距離MR12等於第一最大距離MD11。然而，第一最小徑向距離MR11、第一最大徑向距離MR12及第一最大距離MD11之間的尺寸關係不受限於此實施例。The first inner link end portion 30 has a first minimum radial distance MR11 and a first maximum radial distance MR12. The first minimum radial distance MR11 is defined as a first vertical direction D31 perpendicular to the first inner link longitudinal direction D21 and the first inner link central axis CA11 from the first inner link central axis CA11 to the first inner link end. Edge 50A. The first maximum radial distance MR12 is defined in the first inner link longitudinal direction D21 from the first inner link central axis CA11 to the first inner link end edge 50A. The first maximum radial distance MR12 is equal to or greater than the first minimum radial distance MR11. The first minimum radial distance MR11 is equal to or greater than 4.36 mm. The first maximum radial distance MR12 is preferably 4.75 mm. The first maximum radial distance MR12 is equal to the first maximum distance MD11. However, the dimensional relationship among the first minimum radial distance MR11, the first maximum radial distance MR12, and the first maximum distance MD11 is not limited to this embodiment.

如圖14中所見，第二內鏈端部邊緣50B具有圍繞第二內鏈中心軸線CA12延伸之一第二倒角50B1，使得第二倒角50B1之一部分安置於一第二圓周區域AR12中。當沿第二內鏈中心軸線CA12之軸向方向D1觀看時，第二圓周區域AR12界定為自第一內鏈縱向中心線CL11至一第二參考線RL12，第二參考線RL12自第二內鏈中心軸線CA12向外徑向延伸。第二圓周區域AR12小於14度。As seen in Figure 14, the second inner link end edge 50B has a second chamfer 50B1 extending around the second inner link central axis CA12 such that a portion of the second chamfer 50B1 is disposed in a second circumferential area AR12. When viewed along the axial direction D1 of the second inner link central axis CA12, the second circumferential area AR12 is defined from the first inner link longitudinal centerline CL11 to a second reference line RL12, and the second reference line RL12 is from the second inner link longitudinal center line CL11 to a second reference line RL12. The chain center axis CA12 extends radially outward. The second circumferential area AR12 is less than 14 degrees.

當沿軸向方向D1觀看時，第二倒角50B1與第一內鏈縱向中心線CL11重疊。第二倒角50B1圍繞第二內鏈中心軸線CA12自第一內鏈中間邊緣對50C之一者延伸至第一內鏈中間邊緣對50C之另一者。第二倒角50B1具有在相對於第二內鏈中心軸線CA12之一徑向方向上界定之一第二徑向寬度RW2。當沿軸向方向D1觀看時，第二徑向寬度RW2在自第一內鏈中間邊緣對50C之一者朝向第一內鏈縱向中心線CL11上係實質上恆定的。然而，當沿軸向方向D1觀看時，第二徑向寬度RW2可在自第一內鏈中間邊緣對50C之一者朝向第一內鏈縱向中心線CL11上為非恆定的。The second chamfer 50B1 overlaps the first inner link longitudinal centerline CL11 when viewed in the axial direction D1. The second chamfer 50B1 extends from one of the first inner link middle edge pair 50C to the other of the first inner link middle edge pair 50C around the second inner link central axis CA12. The second chamfer 50B1 has a second radial width RW2 defined in a radial direction relative to the second inner link center axis CA12. The second radial width RW2 is substantially constant from one of the first pair of inner link intermediate edges 50C toward the first inner link longitudinal centerline CL11 when viewed along the axial direction D1. However, when viewed along the axial direction D1, the second radial width RW2 may be non-constant from one of the first pair of inner link intermediate edges 50C toward the first inner link longitudinal centerline CL11.

第二內鏈端部部分32具有一第二最小徑向距離MR21及一第二最大徑向距離MR22。第二最小徑向距離MR21界定為在垂直於第一內鏈縱向方向D21及第二內鏈中心軸線CA12之一第二垂直方向D32上自第二內鏈中心軸線CA12至第二內鏈端部邊緣50B。第二垂直方向D32平行於第一垂直方向D31。然而，第二垂直方向D32可自第一垂直方向D31角度偏移。The second inner link end portion 32 has a second minimum radial distance MR21 and a second maximum radial distance MR22. The second minimum radial distance MR21 is defined as a second vertical direction D32 perpendicular to the first inner link longitudinal direction D21 and the second inner link central axis CA12 from the second inner link central axis CA12 to the second inner link end. Edge 50B. The second vertical direction D32 is parallel to the first vertical direction D31. However, the second vertical direction D32 may be angularly offset from the first vertical direction D31.

第二最大徑向距離MR22界定為在第一內鏈縱向方向D21上自第二內鏈中心軸線CA12至第二內鏈端部邊緣50B。第二最大徑向距離MR22等於或大於第二最小徑向距離MR21。在此實施例中，第二最小徑向距離MR21等於或大於4.36 mm。第二最大徑向距離MR22較佳為4.75 mm。第二最大徑向距離MR22等於第二最大距離MD12。然而，第二最小徑向距離MR21、第二最大徑向距離MR22及第二最大距離MD12之間的尺寸關係不受限於此實施例。The second maximum radial distance MR22 is defined in the first inner link longitudinal direction D21 from the second inner link central axis CA12 to the second inner link end edge 50B. The second maximum radial distance MR22 is equal to or greater than the second minimum radial distance MR21. In this embodiment, the second minimum radial distance MR21 is equal to or greater than 4.36 mm. The second maximum radial distance MR22 is preferably 4.75 mm. The second maximum radial distance MR22 is equal to the second maximum distance MD12. However, the dimensional relationship among the second minimum radial distance MR21, the second maximum radial distance MR22, and the second maximum distance MD12 is not limited to this embodiment.

如圖15中所見，第三內鏈端部邊緣52A具有圍繞第三內鏈中心軸線CA13延伸之一第三倒角52A1，使得第三倒角52A1之一部分安置於一第三圓周區域AR13中。第二內鏈板16包括一第二內鏈縱向中心線CL12。當沿第三內鏈中心軸線CA13之軸向方向D1觀看時，第三圓周區域AR13界定為自第二內鏈縱向中心線CL12至一第三參考線RL13。第二內鏈縱向中心線CL12垂直於第三內鏈中心軸線CA13及第四內鏈中心軸線CA14。第三參考線RL13自第三內鏈中心軸線CA13向外徑向延伸。第三圓周區域AR13小於14度。As seen in Figure 15, the third inner link end edge 52A has a third chamfer 52A1 extending around the third inner link central axis CA13, such that a portion of the third chamfer 52A1 is disposed in a third circumferential area AR13. The second inner link plate 16 includes a second inner link longitudinal centerline CL12. When viewed along the axial direction D1 of the third inner link central axis CA13, the third circumferential area AR13 is defined from the second inner link longitudinal centerline CL12 to a third reference line RL13. The second inner link longitudinal center line CL12 is perpendicular to the third inner link center axis CA13 and the fourth inner link center axis CA14. The third reference line RL13 extends radially outward from the third inner link central axis CA13. The third circumferential area AR13 is less than 14 degrees.

當沿軸向方向D1觀看時，第三倒角52A1與第二內鏈縱向中心線CL12重疊。第三倒角52A1圍繞第三內鏈中心軸線CA13自第二內鏈中間邊緣對52C之一者延伸至第二內鏈中間邊緣對52C之另一者。第三倒角52A1具有在相對於第三內鏈中心軸線CA13之一徑向方向上界定之一第三徑向寬度RW3。當沿軸向方向D1觀看時，第三徑向寬度RW3在自第二內鏈中間邊緣對52C之一者朝向第二內鏈縱向中心線CL12上係實質上恆定的。然而，當沿軸向方向D1觀看時，第三徑向寬度RW3可在自第二內鏈中間邊緣對52C之一者朝向第二內鏈縱向中心線CL12上為非恆定的。The third chamfer 52A1 overlaps the second inner link longitudinal centerline CL12 when viewed in the axial direction D1. The third chamfer 52A1 extends from one of the second inner link middle edge pairs 52C to the other of the second inner link middle edge pair 52C around the third inner link central axis CA13. The third chamfer 52A1 has a third radial width RW3 defined in a radial direction relative to the third inner link center axis CA13. When viewed in the axial direction D1, the third radial width RW3 is substantially constant from one of the second inner link intermediate edge pair 52C toward the second inner link longitudinal centerline CL12. However, when viewed in the axial direction D1, the third radial width RW3 may be non-constant from one of the second inner link intermediate edge pair 52C toward the second inner link longitudinal centerline CL12.

第三內鏈端部部分40具有一第三最小徑向距離MR31及一第三最大徑向距離MR32。第三最小徑向距離MR31界定為在垂直於第二內鏈縱向方向D22及第三內鏈中心軸線CA13之一第三垂直方向D33上自第三內鏈中心軸線CA13至第三內鏈端部邊緣52A。第三最大徑向距離MR32界定為在第二內鏈縱向方向D22上自第三內鏈中心軸線CA13至第三內鏈端部邊緣52A。第三最大徑向距離MR32等於或大於第三最小徑向距離MR31。第三最小徑向距離MR31等於或大於4.36 mm。第三最大徑向距離MR32較佳為4.75 mm。第三最大徑向距離MR32等於第三最大距離MD13。然而，第三最小徑向距離MR31、第三最大徑向距離MR32及第三最大距離MD13之間的尺寸關係不受限於此實施例。The third inner link end portion 40 has a third minimum radial distance MR31 and a third maximum radial distance MR32. The third minimum radial distance MR31 is defined as a third vertical direction D33 perpendicular to the second inner link longitudinal direction D22 and the third inner link central axis CA13 from the third inner link central axis CA13 to the third inner link end. Edge 52A. The third maximum radial distance MR32 is defined from the third inner link center axis CA13 to the third inner link end edge 52A in the second inner link longitudinal direction D22. The third maximum radial distance MR32 is equal to or greater than the third minimum radial distance MR31. The third minimum radial distance MR31 is equal to or greater than 4.36 mm. The third maximum radial distance MR32 is preferably 4.75 mm. The third maximum radial distance MR32 is equal to the third maximum distance MD13. However, the dimensional relationship among the third minimum radial distance MR31, the third maximum radial distance MR32, and the third maximum distance MD13 is not limited to this embodiment.

如圖15中所見，第四內鏈端部邊緣52B具有圍繞第四內鏈中心軸線CA14延伸之一第四倒角52B1。第四倒角52B1圍繞第四內鏈中心軸線CA14延伸，使得第四倒角52B1之一部分安置於一第四圓周區域AR14中。當沿第四內鏈中心軸線CA14之軸向方向D1觀看時，第四圓周區域AR14界定為自第二內鏈縱向中心線CL12至一第四參考線RL14。第四參考線RL14自第四內鏈中心軸線CA14向外徑向延伸。第四圓周區域AR14小於14度。As seen in Figure 15, the fourth inner link end edge 52B has a fourth chamfer 52B1 extending about the fourth inner link center axis CA14. The fourth chamfer 52B1 extends around the fourth inner link central axis CA14 such that a portion of the fourth chamfer 52B1 is disposed in a fourth circumferential area AR14. When viewed along the axial direction D1 of the fourth inner link center axis CA14, the fourth circumferential area AR14 is defined from the second inner link longitudinal centerline CL12 to a fourth reference line RL14. The fourth reference line RL14 extends radially outward from the fourth inner link central axis CA14. The fourth circumferential area AR14 is less than 14 degrees.

當沿軸向方向D1觀看時，第四倒角52B1與第二內鏈縱向中心線CL12重疊。第四倒角52B1圍繞第四內鏈中心軸線CA14自第二內鏈中間邊緣對52C之一者延伸至第二內鏈中間邊緣對52C之另一者。第四倒角52B1具有在相對於第四內鏈中心軸線CA14之一徑向方向上界定之一第四徑向寬度RW4。當沿軸向方向D1觀看時，第四徑向寬度RW4自第二內鏈中間邊緣對52C之一者朝向第二內鏈縱向中心線CL12增大。然而，當沿軸向方向D1觀看時，第四徑向寬度RW4可在自第二內鏈中間邊緣對52C之一者朝向第二內鏈縱向中心線CL12上為恆定的。The fourth chamfer 52B1 overlaps the second inner link longitudinal centerline CL12 when viewed in the axial direction D1. The fourth chamfer 52B1 extends from one of the second inner link middle edge pairs 52C to the other of the second inner link middle edge pair 52C around the fourth inner link central axis CA14. The fourth chamfer 52B1 has a fourth radial width RW4 defined in a radial direction relative to the fourth inner link center axis CA14. The fourth radial width RW4 increases from one of the second inner link intermediate edge pairs 52C toward the second inner link longitudinal centerline CL12 when viewed in the axial direction D1. However, when viewed in the axial direction D1, the fourth radial width RW4 may be constant from one of the second inner link intermediate edge pair 52C toward the second inner link longitudinal centerline CL12.

第四內鏈端部部分42具有一第四最小徑向距離MR41及一第四最大徑向距離MR42。第四最小徑向距離MR41界定為在垂直於第二內鏈縱向方向D22及第四內鏈中心軸線CA14之一第四垂直方向D34上自第四內鏈中心軸線CA14至第四內鏈端部邊緣52B。第四垂直方向D34平行於第三垂直方向D33。然而，第四垂直方向D34可自第三垂直方向D33角度偏移。The fourth inner link end portion 42 has a fourth minimum radial distance MR41 and a fourth maximum radial distance MR42. The fourth minimum radial distance MR41 is defined as a fourth vertical direction D34 perpendicular to the second inner link longitudinal direction D22 and the fourth inner link central axis CA14 from the fourth inner link central axis CA14 to the fourth inner link end. Edge 52B. The fourth vertical direction D34 is parallel to the third vertical direction D33. However, the fourth vertical direction D34 may be angularly offset from the third vertical direction D33.

第四最大徑向距離MR42界定為在第二內鏈縱向方向D22上自第四內鏈中心軸線CA14至第四內鏈端部邊緣52B。第四最大徑向距離MR42等於或大於第四最小徑向距離MR41。第四最小徑向距離MR41等於或大於4.36 mm。第四最大徑向距離MR42較佳為4.75 mm。第四最大徑向距離MR42等於第四最大距離MD14。然而，第四最小徑向距離MR41、第四最大徑向距離MR42及第四最大距離MD14之間的尺寸關係不受限於此實施例。The fourth maximum radial distance MR42 is defined from the fourth inner link center axis CA14 to the fourth inner link end edge 52B in the second inner link longitudinal direction D22. The fourth maximum radial distance MR42 is equal to or greater than the fourth minimum radial distance MR41. The fourth minimum radial distance MR41 is equal to or greater than 4.36 mm. The fourth maximum radial distance MR42 is preferably 4.75 mm. The fourth maximum radial distance MR42 is equal to the fourth maximum distance MD14. However, the dimensional relationship among the fourth minimum radial distance MR41, the fourth maximum radial distance MR42, and the fourth maximum distance MD14 is not limited to this embodiment.

如圖10及圖15中所見，第四倒角52B1包含一階梯狀部分54。階梯狀部分54圍繞第四內鏈中心軸線CA14延伸。階梯狀部分54包含一第一表面54A及一第二表面54B。第一表面54A及第二表面54B設置於第四倒角52B1中。第一表面54A設定於第二表面54B與第二內鏈板16之第二內表面16A之間。As seen in FIGS. 10 and 15 , the fourth chamfer 52B1 includes a stepped portion 54 . The stepped portion 54 extends about the fourth inner link center axis CA14. The stepped portion 54 includes a first surface 54A and a second surface 54B. The first surface 54A and the second surface 54B are provided in the fourth chamfer 52B1. The first surface 54A is set between the second surface 54B and the second inner surface 16A of the second inner link plate 16 .

如圖16中所見，第二表面54B相對於第一表面54A及第四倒角52B1傾斜。第一表面54A及第二表面54B相對於第二內表面16A傾斜。第一表面54A及第二表面54B在軸向方向D1上設置於第二內表面16A與第二外表面16B之間。第一表面54A及第二表面54B提供第四倒角52B1中之一凹槽。As seen in Figure 16, second surface 54B is inclined relative to first surface 54A and fourth chamfer 52B1. The first surface 54A and the second surface 54B are inclined relative to the second inner surface 16A. The first surface 54A and the second surface 54B are disposed between the second inner surface 16A and the second outer surface 16B in the axial direction D1. The first surface 54A and the second surface 54B provide a groove in the fourth chamfer 52B1.

如圖14中所見，第一鏈條滾子26包含一第一徑向外圓周表面26A及設置於第一徑向外圓周表面26A之徑向內之一第一徑向內圓周表面26B。當第一鏈條滾子26在第一內鏈縱向方向D21上朝向第一內鏈端部部分30移動直至第一鏈條滾子26之第一徑向內圓周表面26B接觸第一管狀部分30A時，一第一延伸距離ED11在第一內鏈縱向方向D21上界定於第一倒角50A1之一邊緣與第一鏈條滾子26之第一徑向外圓周表面26A之一部分之間。第一延伸距離ED11在自0.95 mm至1.1 mm之範圍內。As seen in FIG. 14 , the first chain roller 26 includes a first radial outer circumferential surface 26A and a first radially inner circumferential surface 26B disposed radially inward of the first radial outer circumferential surface 26A. When the first chain roller 26 moves toward the first inner link end portion 30 in the first inner link longitudinal direction D21 until the first radially inner circumferential surface 26B of the first chain roller 26 contacts the first tubular portion 30A, A first extension distance ED11 is defined in the first inner chain longitudinal direction D21 between an edge of the first chamfer 50A1 and a portion of the first radially outer circumferential surface 26A of the first chain roller 26 . The first extension distance ED11 is in the range from 0.95 mm to 1.1 mm.

如圖3中所見，第一倒角50A1經傾斜以在第二齒TH2嚙合於外鏈間隔SP2中時使第一內鏈板14之第一內鏈端部部分30適合於第二齒TH2之一輪廓。第二倒角50B1經傾斜以在第二齒TH2嚙合於外鏈間隔SP2中時使第一內鏈板14之第二內鏈端部部分32適合於第二齒TH2之輪廓。此外，由於第一最大距離MD11大於第三最大距離MD13，所以可在第二齒TH2嚙合於外鏈間隔SP2中時使第一內鏈板14之第一內鏈端部部分30更適合於第二齒TH2之一輪廓。上述特徵提高自行車鏈輪B51與自行車鏈條12之間的鏈條保持效能。As seen in Figure 3, the first chamfer 50A1 is beveled to fit the first inner link end portion 30 of the first inner link plate 14 into the second tooth TH2 when the second tooth TH2 is engaged in the outer link spacing SP2. An outline. The second chamfer 50B1 is beveled to adapt the second inner link end portion 32 of the first inner link plate 14 to the contour of the second tooth TH2 when the second tooth TH2 is engaged in the outer link spacing SP2. In addition, since the first maximum distance MD11 is greater than the third maximum distance MD13, the first inner link end portion 30 of the first inner link plate 14 can be made more suitable for the first inner link plate 14 when the second tooth TH2 is engaged in the outer link space SP2. One profile of two teeth TH2. The above features improve the chain retention efficiency between the bicycle sprocket B51 and the bicycle chain 12 .

如圖17至圖21中所見，第一外鏈板18包括一第一外鏈端部部分60、一第二外鏈端部部分62及一第一外鏈中間部分64。第一外鏈端部部分60包含具有一第一外鏈中心軸線CA21之一第一外鏈開口(一第一外鏈圓形開口) 66。第二外鏈端部部分62包含具有一第二外鏈中心軸線CA22之一第二外鏈開口(一第二外鏈圓形開口) 68。第二外鏈中心軸線CA22沿第一外鏈中心軸線CA21延伸。在此實施例中，第一外鏈開口66係一圓形開口，且第二外鏈開口68係一圓形開口。因此，第一外鏈開口66亦可指稱一第一外鏈圓形開口66。第二外鏈開口68亦可指稱一第二外鏈圓形開口68。第二外鏈中心軸線CA22在一第一外鏈縱向方向D41上與第一外鏈中心軸線CA21間隔開。第一外鏈中間部分64使第一外鏈端部部分60及第二外鏈端部部分62互連。如圖3中所見，第一鏈銷22延伸穿過第一外鏈開口66。第二鏈銷24延伸穿過第二外鏈開口68。第一外鏈端部部分60在傳動方向DD上設置於第二外鏈端部部分62之一上游側上。As seen in FIGS. 17-21 , the first outer link plate 18 includes a first outer link end portion 60 , a second outer link end portion 62 and a first outer link middle portion 64 . The first outer link end portion 60 includes a first outer link opening (a first outer link circular opening) 66 having a first outer link central axis CA21. The second outer link end portion 62 includes a second outer link opening (a second outer link circular opening) 68 having a second outer link central axis CA22. The second outer link central axis CA22 extends along the first outer link central axis CA21. In this embodiment, the first outer link opening 66 is a circular opening, and the second outer link opening 68 is a circular opening. Therefore, the first outer link opening 66 may also be referred to as a first outer link circular opening 66 . The second outer link opening 68 may also be referred to as a second outer link circular opening 68 . The second outer link central axis CA22 is spaced apart from the first outer link central axis CA21 in a first outer link longitudinal direction D41. The first outer link intermediate portion 64 interconnects the first outer link end portion 60 and the second outer link end portion 62 . As seen in FIG. 3 , the first link pin 22 extends through the first outer link opening 66 . The second link pin 24 extends through the second outer link opening 68 . The first outer link end portion 60 is arranged on an upstream side of the second outer link end portion 62 in the transmission direction DD.

如圖22至圖26中所見，第二外鏈板20包括一第三外鏈端部部分70、一第四外鏈端部部分72及一第二外鏈中間部分74。第三外鏈端部部分70包含具有一第三外鏈中心軸線CA23之一第三外鏈開口76。第四外鏈端部部分72包含具有一第四外鏈中心軸線CA24之一第四外鏈開口78。第四外鏈中心軸線CA24在一第二外鏈縱向方向D42上與第三外鏈中心軸線CA23間隔開。第二外鏈中間部分74使第三外鏈端部部分70及第四外鏈端部部分72互連。As seen in FIGS. 22 to 26 , the second outer link plate 20 includes a third outer link end portion 70 , a fourth outer link end portion 72 and a second outer link middle portion 74 . The third outer link end portion 70 includes a third outer link opening 76 having a third outer link central axis CA23. The fourth outer link end portion 72 includes a fourth outer link opening 78 having a fourth outer link central axis CA24. The fourth outer link central axis CA24 is spaced apart from the third outer link central axis CA23 in a second outer link longitudinal direction D42. The second outer link intermediate portion 74 interconnects the third outer link end portion 70 and the fourth outer link end portion 72 .

如圖3中所見，第三外鏈中心軸線CA23延伸穿過第一外鏈開口66。第四外鏈中心軸線CA24延伸穿過第二外鏈開口68。第三外鏈中心軸線CA23實質上與第一外鏈中心軸線CA21重合。第四外鏈中心軸線CA24實質上與第二外鏈中心軸線CA22重合。然而，第三外鏈中心軸線CA23可自第一外鏈中心軸線CA21偏移。第四外鏈中心軸線CA24可自第二外鏈中心軸線CA22偏移。第三外鏈端部部分70在傳動方向DD上設置於第四外鏈端部部分72之一上游側上。As seen in Figure 3, the third outer link central axis CA23 extends through the first outer link opening 66. The fourth outer link central axis CA24 extends through the second outer link opening 68 . The third external link central axis CA23 substantially coincides with the first external link central axis CA21. The fourth external link central axis CA24 substantially coincides with the second external link central axis CA22. However, the third outer link center axis CA23 may be offset from the first outer link center axis CA21. The fourth outer link central axis CA24 may be offset from the second outer link central axis CA22. The third outer link end portion 70 is arranged on an upstream side of the fourth outer link end portion 72 in the transmission direction DD.

如圖3中所見，第二外鏈板20包括自第二外鏈中間部分74朝向第一外鏈中間部分64延伸之一凸出部分80。凸出部分80在軸向方向D1上自第四內表面20A朝向第一外鏈中間部分64延伸。第一外鏈中間部分64包含在軸向方向D1上面向第二外鏈中間部分74之一第一外鏈中間表面64A。第三內表面18A包含第一外鏈中間表面64A。第二外鏈中間部分74包含在軸向方向D1上面向第一外鏈中間部分64之一第二外鏈中間表面74A。第四內表面20A包含第二外鏈中間表面74A。凸出部分80在軸向方向D1上自第二外鏈中間表面74A朝向第一外鏈中間表面64A延伸。As seen in FIG. 3 , the second outer link plate 20 includes a protruding portion 80 extending from the second outer link intermediate portion 74 toward the first outer link intermediate portion 64 . The protruding portion 80 extends in the axial direction D1 from the fourth inner surface 20A toward the first outer link intermediate portion 64 . The first outer link intermediate portion 64 includes a first outer link intermediate surface 64A facing the second outer link intermediate portion 74 in the axial direction D1. The third inner surface 18A includes the first outer link intermediate surface 64A. The second outer link intermediate portion 74 includes a second outer link intermediate surface 74A facing the first outer link intermediate portion 64 in the axial direction D1. The fourth inner surface 20A includes the second outer link intermediate surface 74A. The raised portion 80 extends in the axial direction D1 from the second outer link intermediate surface 74A toward the first outer link intermediate surface 64A.

凸出部分80在軸向方向D1上自第二外鏈中間表面74A朝向第一外鏈板18延伸一突出量AP1。第一最大距離MD11與第三最大距離MD13之間的一差小於凸出部分80之突出量AP1。然而，第一最大距離MD11與第三最大距離MD13之間的差可等於或大於凸出部分80之突出量AP1。The protruding portion 80 extends in the axial direction D1 from the second outer link intermediate surface 74A toward the first outer link plate 18 by a protruding amount AP1. A difference between the first maximum distance MD11 and the third maximum distance MD13 is less than the protruding amount AP1 of the protruding portion 80 . However, the difference between the first maximum distance MD11 and the third maximum distance MD13 may be equal to or greater than the protruding amount AP1 of the protruding portion 80 .

如圖3中所見，第一外鏈板18不具有在軸向方向D1上自第一外鏈中間部分64朝向第二外鏈中間部分74延伸之一凸出部分。然而，第一外鏈板18可與第二外鏈板20一樣包含一凸出部分80。As seen in FIG. 3 , the first outer link plate 18 does not have a protruding portion extending in the axial direction D1 from the first outer link intermediate portion 64 toward the second outer link intermediate portion 74 . However, the first outer link plate 18 may include a protruding portion 80 like the second outer link plate 20 .

如圖3中所見，一軸向距離AD1界定為自第一內鏈中間部分34之第一內表面14A至第二內鏈中間部分44之第二內表面16A。軸向距離AD1在自2.1 mm至2.3 mm之範圍內。在此實施例中，軸向距離AD1係2.2 mm。然而，軸向距離不受限於此實施例及上述範圍。軸向距離AD1係軸向方向D1上之第一內鏈中間部分34之第一內表面14A與第二內鏈中間部分44之第二內表面16A之間的一最大軸向距離。As seen in FIG. 3 , an axial distance AD1 is defined from the first inner surface 14A of the first inner link intermediate portion 34 to the second inner surface 16A of the second inner link intermediate portion 44 . The axial distance AD1 ranges from 2.1 mm to 2.3 mm. In this embodiment, the axial distance AD1 is 2.2 mm. However, the axial distance is not limited to this embodiment and the above range. The axial distance AD1 is a maximum axial distance between the first inner surface 14A of the first inner link intermediate portion 34 and the second inner surface 16A of the second inner link intermediate portion 44 in the axial direction D1.

如圖3中所見，一額外軸向距離AD2界定為自第一外鏈中間部分64之第三內表面18A至凸出部分80。額外軸向距離AD2係軸向方向D1上之第一外鏈中間部分64之第三內表面18A與凸出部分80之間的一最大軸向距離。軸向距離AD1小於額外軸向距離AD2。As seen in FIG. 3 , an additional axial distance AD2 is defined from the third inner surface 18A of the first outer link intermediate portion 64 to the raised portion 80 . The additional axial distance AD2 is a maximum axial distance between the third inner surface 18A of the first outer link intermediate portion 64 and the protruding portion 80 in the axial direction D1. The axial distance AD1 is less than the additional axial distance AD2.

第一齒TH1具有在軸向方向D1上界定之一第一軸向寬度TH11。第二齒TH2具有在軸向方向D1上界定之一第二軸向寬度TH21。第一齒TH1及第二齒TH2在傳動方向DD上交替配置。第一軸向寬度TH11小於內鏈間隔SP1之軸向距離AD1。第二軸向寬度TH21大於內鏈間隔SP1之軸向距離AD1且小於外鏈間隔SP2之額外軸向距離AD2。The first tooth TH1 has a first axial width TH11 defined in the axial direction D1. The second tooth TH2 has a second axial width TH21 defined in the axial direction D1. The first teeth TH1 and the second teeth TH2 are alternately arranged in the transmission direction DD. The first axial width TH11 is smaller than the axial distance AD1 of the inner link spacing SP1. The second axial width TH21 is greater than the axial distance AD1 of the inner link spacing SP1 and smaller than the additional axial distance AD2 of the outer link spacing SP2.

如圖27中所見，第一外鏈端部部分60、第二外鏈端部部分62及第一外鏈中間部分64界定一第一外鏈外周邊邊緣82。第一外鏈外周邊邊緣82包括一第一外鏈端部邊緣82A、一第二外鏈端部邊緣82B及一對第一外鏈中間邊緣82C。第一外鏈端部邊緣82A圍繞第一外鏈端部部分60延伸。第一外鏈端部邊緣82B圍繞第二外鏈端部部分62延伸。第一外鏈中間邊緣對82C沿第一外鏈端部邊緣82A與第二外鏈端部邊緣82B之間的第一外鏈中間部分64延伸。As seen in Figure 27, the first outer link end portion 60, the second outer link end portion 62, and the first outer link intermediate portion 64 define a first outer link outer peripheral edge 82. The first outer link outer peripheral edge 82 includes a first outer link end edge 82A, a second outer link end edge 82B and a pair of first outer link middle edges 82C. The first outer link end edge 82A extends around the first outer link end portion 60 . The first outer link end edge 82B extends around the second outer link end portion 62 . The first outer link intermediate edge pair 82C extends along the first outer link intermediate portion 64 between the first outer link end edge 82A and the second outer link end edge 82B.

第一外鏈板18包括垂直於第一外鏈中心軸線CA21及第二外鏈中心軸線CA22之一第一外鏈縱向中心線CL21。第一外鏈端部邊緣82A具有圍繞第一外鏈中心軸線CA21延伸之一第一倒角82A1，使得第一倒角82A1之一部分安置於一圓周區域AR21中，當沿第一外鏈中心軸線CA21之軸向方向D1觀看時，圓周區域AR21界定為自第一外鏈縱向中心線CL21至自第一外鏈中心軸線CA21向外徑向延伸之一第一參考線RL21。圓周區域AR21小於90度。在此實施例中，圓周區域AR21等於或小於45度。圓周區域AR21大於0度。然而，圓周區域AR21不受限於此實施例。The first outer link plate 18 includes a first outer link longitudinal center line CL21 perpendicular to the first outer link central axis CA21 and the second outer link central axis CA22. The first outer link end edge 82A has a first chamfer 82A1 extending around the first outer link central axis CA21, such that a portion of the first chamfer 82A1 is disposed in a circumferential area AR21, when along the first outer link central axis CA21 When viewed in the axial direction D1 of CA21, the circumferential area AR21 is defined from the first outer link longitudinal center line CL21 to a first reference line RL21 extending radially outward from the first outer link central axis CA21. The circumferential area AR21 is less than 90 degrees. In this embodiment, the circumferential area AR21 is equal to or less than 45 degrees. The circumferential area AR21 is greater than 0 degrees. However, the circumferential area AR21 is not limited to this embodiment.

第一外鏈端部邊緣82A具有一第一額外倒角82A2。第一額外倒角82A2係與第一倒角82A1分離之一倒角。第一倒角82A1包含一第一圓周端82A11及一第一額外圓周端82A12。第一倒角82A1自第一圓周端82A11越過第一外鏈縱向中心線CL21而延伸至第一額外圓周端82A12。當沿軸向方向D1觀看時，第一外鏈縱向中心線CL21設置於第一圓周端82A11與第一額外圓周端82A12之間。The first outer link end edge 82A has a first additional chamfer 82A2. The first additional chamfer 82A2 is a chamfer separated from the first chamfer 82A1. The first chamfer 82A1 includes a first circumferential end 82A11 and a first additional circumferential end 82A12. The first chamfer 82A1 extends from the first circumferential end 82A11 across the first outer link longitudinal centerline CL21 to the first additional circumferential end 82A12. When viewed along the axial direction D1, the first outer link longitudinal center line CL21 is disposed between the first circumferential end 82A11 and the first additional circumferential end 82A12.

第一倒角82A1具有圍繞第一外鏈中心軸線CA21界定於第一圓周端82A11與第一額外圓周端82A12之間的一第一圓周角AG21。第一額外倒角82A2具有圍繞第一外鏈中心軸線CA21界定於第一額外倒角82A2之對置端之間的一第一額外圓周角AG22。第一圓周角AG21大於第一額外圓周角AG22。然而，第一圓周角AG21可等於或小於第一額外圓周角AG22。第一倒角82A1及第一額外倒角82A2兩者安置於第三外表面18B上。可自第一外鏈端部邊緣82A省略第一倒角82A1及第一額外倒角82A2之至少一者。The first chamfer 82A1 has a first circumferential angle AG21 defined between the first circumferential end 82A11 and the first additional circumferential end 82A12 around the first outer link central axis CA21. The first additional chamfer 82A2 has a first additional circumferential angle AG22 defined between opposite ends of the first additional chamfer 82A2 about the first outer link central axis CA21. The first circumferential angle AG21 is greater than the first additional circumferential angle AG22. However, the first circumferential angle AG21 may be equal to or smaller than the first additional circumferential angle AG22. Both the first chamfer 82A1 and the first additional chamfer 82A2 are disposed on the third outer surface 18B. At least one of the first chamfer 82A1 and the first additional chamfer 82A2 may be omitted from the first outer link end edge 82A.

第二外鏈端部邊緣82B具有圍繞第二外鏈中心軸線CA22延伸之一第二倒角82B1，使得第二倒角82B1之一部分安置於一圓周區域AR22中，當沿軸向方向D1觀看時，圓周區域AR22界定為自第一外鏈縱向中心線CL21至自第二外鏈中心軸線CA22向外徑向延伸之一第二參考線RL22。圓周區域AR22小於90度。在此實施例中，圓周區域AR22等於或小於45度。圓周區域AR22大於0度。然而，圓周區域AR22不受限於此實施例。The second outer link end edge 82B has a second chamfer 82B1 extending around the second outer link central axis CA22 such that a portion of the second chamfer 82B1 is disposed in a circumferential area AR22 when viewed in the axial direction D1 , the circumferential area AR22 is defined from the first outer link longitudinal center line CL21 to a second reference line RL22 extending radially outward from the second outer link central axis CA22. The circumferential area AR22 is less than 90 degrees. In this embodiment, the circumferential area AR22 is equal to or less than 45 degrees. The circumferential area AR22 is greater than 0 degrees. However, the circumferential area AR22 is not limited to this embodiment.

第二外鏈端部邊緣82B具有一第二額外倒角82B2。第二額外倒角82B2係與第二倒角82B1分離之一倒角。第二倒角82B1包含一第二圓周端82B11及一第二額外圓周端82B12。第二倒角82B1自第二圓周端82B11越過第一外鏈縱向中心線CL21而延伸至第二額外圓周端82B12。當沿軸向方向D1觀看時，第一外鏈縱向中心線CL21設置於第二圓周端82B11與第二額外圓周端82B12之間。The second outer link end edge 82B has a second additional chamfer 82B2. The second additional chamfer 82B2 is a chamfer separated from the second chamfer 82B1. The second chamfer 82B1 includes a second circumferential end 82B11 and a second additional circumferential end 82B12. The second chamfer 82B1 extends from the second circumferential end 82B11 across the first outer link longitudinal centerline CL21 to the second additional circumferential end 82B12. When viewed along the axial direction D1, the first outer link longitudinal centerline CL21 is disposed between the second circumferential end 82B11 and the second additional circumferential end 82B12.

第二倒角82B1具有圍繞第二外鏈中心軸線CA22界定於第二圓周端82B11與第二額外圓周端82B12之間的一第二圓周角AG23。第二額外倒角82B2具有圍繞第二外鏈中心軸線CA22界定於第二額外倒角82B2之對置端之間的一第二額外圓周角AG24。第二倒角82B1及第二額外倒角82B2兩者安置於第三外表面18B上。可自第二外鏈端部邊緣82B省略第二倒角82B1及第二額外倒角82B2之至少一者。The second chamfer 82B1 has a second circumferential angle AG23 defined between the second circumferential end 82B11 and the second additional circumferential end 82B12 around the second outer link central axis CA22. The second additional chamfer 82B2 has a second additional circumferential angle AG24 defined between opposite ends of the second additional chamfer 82B2 about the second outer link central axis CA22. Both the second chamfer 82B1 and the second additional chamfer 82B2 are disposed on the third outer surface 18B. At least one of the second chamfer 82B1 and the second additional chamfer 82B2 may be omitted from the second outer link end edge 82B.

如圖28中所見，第三外鏈端部部分70、第四外鏈端部部分72及第二外鏈中間部分74界定一第二外鏈外周邊邊緣84。第二外鏈外周邊邊緣84包括一第三外鏈端部邊緣84A、一第四外鏈端部邊緣84B及一對第二外鏈中間邊緣84C。第三外鏈端部邊緣84A圍繞第三外鏈端部部分70延伸。第四外鏈端部邊緣84B圍繞第四外鏈端部部分72延伸。第二外鏈中間邊緣對84C沿第三外鏈端部邊緣84A與第四外鏈端部邊緣84B之間的第二外鏈中間部分74延伸。As seen in Figure 28, the third outer link end portion 70, the fourth outer link end portion 72, and the second outer link intermediate portion 74 define a second outer link outer peripheral edge 84. The second outer link outer peripheral edge 84 includes a third outer link end edge 84A, a fourth outer link end edge 84B and a pair of second outer link intermediate edges 84C. A third outer link end edge 84A extends around the third outer link end portion 70 . A fourth outer link end edge 84B extends around the fourth outer link end portion 72 . The second outer link intermediate edge pair 84C extends along the second outer link intermediate portion 74 between the third outer link end edge 84A and the fourth outer link end edge 84B.

第二外鏈板20包括垂直於第三外鏈中心軸線CA23及第四外鏈中心軸線CA24之一第二外鏈縱向中心線CL22。第三外鏈端部邊緣84A具有圍繞第三外鏈中心軸線CA23延伸之一第三倒角84A1。第三外鏈端部邊緣84A具有一第三額外倒角84A2。第三額外倒角84A2係與第三倒角84A1分離之一倒角。第三倒角84A1具有圍繞第三外鏈中心軸線CA23界定於第三倒角84A1之對置端之間的一第三圓周角AG31。第三額外倒角84A2具有圍繞第三外鏈中心軸線CA23界定於第三額外倒角84A2之對置端之間的一第三額外圓周角AG32。第三圓周角AG31大於第三額外圓周角AG32。然而，第三圓周角AG31可等於或小於第三額外圓周角AG32。第三倒角84A1及第三額外倒角84A2兩者安置於第四外表面20B上。可自第三外鏈端部邊緣84A省略第三倒角84A1及第三額外倒角84A2之至少一者。The second outer link plate 20 includes a second outer link longitudinal centerline CL22 perpendicular to the third outer link central axis CA23 and the fourth outer link central axis CA24. The third outer link end edge 84A has a third chamfer 84A1 extending about the third outer link central axis CA23. The third outer link end edge 84A has a third additional chamfer 84A2. The third additional chamfer 84A2 is a chamfer separated from the third chamfer 84A1. The third chamfer 84A1 has a third circumferential angle AG31 defined between opposite ends of the third chamfer 84A1 about the third outer link central axis CA23. The third additional chamfer 84A2 has a third additional circumferential angle AG32 defined between opposite ends of the third additional chamfer 84A2 about the third outer link central axis CA23. The third circumferential angle AG31 is greater than the third additional circumferential angle AG32. However, the third circumferential angle AG31 may be equal to or smaller than the third additional circumferential angle AG32. Both the third chamfer 84A1 and the third additional chamfer 84A2 are disposed on the fourth outer surface 20B. At least one of the third chamfer 84A1 and the third additional chamfer 84A2 may be omitted from the third outer link end edge 84A.

第四外鏈端部邊緣84B具有圍繞第四外鏈中心軸線CA24延伸之一第四倒角84B1。第四外鏈端部邊緣84B具有一第四額外倒角84B2。第四額外倒角84B2係與第四倒角84B1分離之一倒角。第四倒角84B1具有圍繞第四外鏈中心軸線CA24界定於第四倒角84B1之對置端之間的一第四圓周角AG33。第四額外倒角84B2具有圍繞第四外鏈中心軸線CA24界定於第四額外倒角84B2之對置端之間的一第四額外圓周角AG34。第四圓周角AG33大於第四額外圓周角AG34。然而，第四圓周角AG33可等於或小於第四額外圓周角AG34。第四倒角84B1及第四額外倒角84B2兩者安置於第四外表面20B上。可自第四外鏈端部邊緣84B省略第四倒角84B1及第四額外倒角84B2之至少一者。The fourth outer link end edge 84B has a fourth chamfer 84B1 extending about the fourth outer link central axis CA24. The fourth outer link end edge 84B has a fourth additional chamfer 84B2. The fourth additional chamfer 84B2 is a chamfer separated from the fourth chamfer 84B1. The fourth chamfer 84B1 has a fourth circumferential angle AG33 defined between opposite ends of the fourth chamfer 84B1 about the fourth outer link central axis CA24. The fourth additional chamfer 84B2 has a fourth additional circumferential angle AG34 defined between opposing ends of the fourth outer link center axis CA24 between the fourth additional chamfer 84B2. The fourth circumferential angle AG33 is greater than the fourth additional circumferential angle AG34. However, the fourth circumferential angle AG33 may be equal to or smaller than the fourth additional circumferential angle AG34. Both the fourth chamfer 84B1 and the fourth additional chamfer 84B2 are disposed on the fourth outer surface 20B. At least one of the fourth chamfer 84B1 and the fourth additional chamfer 84B2 may be omitted from the fourth outer link end edge 84B.

如圖27及圖28中所見，第一圓周角AG21大於第三圓周角AG31、第三額外圓周角AG32、第四圓周角AG33及第四額外圓周角AG34之各者。第二圓周角AG23大於第三圓周角AG31、第三額外圓周角AG32、第四圓周角AG33及第四額外圓周角AG34之各者。然而，第一圓周角AG21可等於或小於第三圓周角AG31、第三額外圓周角AG32、第四圓周角AG33及第四額外圓周角AG34之至少一者。第二圓周角AG23可等於或小於第三圓周角AG31、第三額外圓周角AG32、第四圓周角AG33及第四額外圓周角AG34之至少一者。As seen in FIGS. 27 and 28 , the first circumferential angle AG21 is larger than each of the third circumferential angle AG31 , the third additional circumferential angle AG32 , the fourth circumferential angle AG33 and the fourth additional circumferential angle AG34 . The second circumferential angle AG23 is greater than each of the third circumferential angle AG31, the third additional circumferential angle AG32, the fourth circumferential angle AG33, and the fourth additional circumferential angle AG34. However, the first circumferential angle AG21 may be equal to or smaller than at least one of the third circumferential angle AG31, the third additional circumferential angle AG32, the fourth circumferential angle AG33, and the fourth additional circumferential angle AG34. The second circumferential angle AG23 may be equal to or smaller than at least one of the third circumferential angle AG31, the third additional circumferential angle AG32, the fourth circumferential angle AG33, and the fourth additional circumferential angle AG34.

如圖29中所見，在其中自行車鏈條12與前鏈輪B51嚙合之一狀態中，當沿軸向方向D1觀看時，第一外鏈端部部分30與前鏈輪B51之第二齒TH2重疊以提供一重疊區域OA1。重疊區域OA1具有等於或大於0.45 mm之一最大圓周長度OA1A。最大圓周長度OA1A等於或小於3 mm。As seen in FIG. 29 , in a state in which the bicycle chain 12 is meshed with the front sprocket B51 , the first outer chain end portion 30 overlaps the second tooth TH2 of the front sprocket B51 when viewed in the axial direction D1 To provide an overlapping area OA1. The overlapping area OA1 has a maximum circumferential length OA1A equal to or greater than 0.45 mm. The maximum circumferential length OA1A is equal to or less than 3 mm.

在其中自行車鏈條12與鏈輪(例如前鏈輪B51)嚙合之一狀態中，當沿軸向方向D1觀看時，第二外鏈端部部分32與鏈輪(例如前鏈輪B51)之第一齒TH1重疊以提供一重疊區域OA2。重疊區域OA2具有等於或大於0.45 mm之一最大圓周長度OA2A。最大圓周長度OA2A等於或小於3 mm。In a state in which the bicycle chain 12 is engaged with a sprocket (eg, front sprocket B51 ), the second outer chain end portion 32 is engaged with the third sprocket (eg, front sprocket B51 ) when viewed in the axial direction D1 One tooth TH1 overlaps to provide an overlapping area OA2. The overlapping area OA2 has a maximum circumferential length OA2A equal to or greater than 0.45 mm. The maximum circumferential length OA2A is equal to or less than 3 mm.

第一內鏈端部部分30之最大圓周長度OA1A實質上等於第二內鏈端部部分32之最大圓周長度OA2A。然而，第一內鏈端部部分30之最大圓周長度OA1A可不同於第二內鏈端部部分32之最大圓周長度OA2A。 第二實施例 The maximum circumferential length OA1A of the first inner link end portion 30 is substantially equal to the maximum circumferential length OA2A of the second inner link end portion 32 . However, the maximum circumferential length OA1A of the first inner link end portion 30 may be different from the maximum circumferential length OA2A of the second inner link end portion 32 . Second embodiment

下文將參考圖30至圖44描述根據一第二實施例之一自行車鏈條212。除第一內鏈板14、第二內鏈板16、第一外鏈板18及第二外鏈板20之外，自行車鏈條212具有相同於自行車鏈條12之結構的結構。因此，具有實質上相同於第一實施例中之元件之功能的元件在此處將標有相同元件符號，且為簡潔起見，此處將不再詳細描述及/或繪示該等元件。A bicycle chain 212 according to a second embodiment will be described below with reference to FIGS. 30 to 44 . The bicycle chain 212 has the same structure as the bicycle chain 12 except for the first inner link plate 14 , the second inner link plate 16 , the first outer link plate 18 and the second outer link plate 20 . Therefore, elements having substantially the same function as elements in the first embodiment will be labeled with the same element numbers here, and for the sake of brevity, these elements will not be described and/or illustrated in detail here.

如圖30及圖31中所見，自行車鏈條212包括一第一內鏈板214、一第二內鏈板216、一第一外鏈板218及一第二外鏈板220。在此實施例中，自行車鏈條212包括複數個第一內鏈板214、複數個第二內鏈板216、複數個第一外鏈板218及複數個第二外鏈板220。然而，第一內鏈板214之一總數、第二內鏈板216之一總數、第一外鏈板218之一總數及第二外鏈板220之一總數不受限於此實施例。As seen in FIGS. 30 and 31 , the bicycle chain 212 includes a first inner link plate 214 , a second inner link plate 216 , a first outer link plate 218 and a second outer link plate 220 . In this embodiment, the bicycle chain 212 includes a plurality of first inner link plates 214 , a plurality of second inner link plates 216 , a plurality of first outer link plates 218 and a plurality of second outer link plates 220 . However, the total number of the first inner link plates 214 , the second inner link plates 216 , the first outer link plates 218 and the second outer link plates 220 are not limited to this embodiment.

如圖32及圖33中所見，第一內鏈板214具有實質上相同於第一實施例之第一內鏈板14之結構的結構。如圖34中所見，第一內鏈端部邊緣50A具有圍繞第一內鏈中心軸線CA11延伸之一第一倒角250A1，使得第一倒角250A1之一部分安置於第一圓周區域AR11中。第一倒角250A1具有在相對於第一內鏈中心軸線CA11之一徑向方向上界定之一第一徑向寬度RW21。當沿軸向方向D1觀看時，第一徑向寬度RW21自第一內鏈中間邊緣對50C之一者朝向第一內鏈縱向中心線CL11增大。As seen in FIGS. 32 and 33 , the first inner link plate 214 has a structure that is substantially the same as the structure of the first inner link plate 14 of the first embodiment. As seen in FIG. 34 , the first inner link end edge 50A has a first chamfer 250A1 extending around the first inner link central axis CA11 such that a portion of the first chamfer 250A1 is disposed in the first circumferential area AR11 . The first chamfer 250A1 has a first radial width RW21 defined in a radial direction relative to the first inner link center axis CA11. The first radial width RW21 increases from one of the first inner link intermediate edge pairs 50C toward the first inner link longitudinal centerline CL11 when viewed along the axial direction D1.

如圖35及圖36中所見，第二內鏈板216具有實質上相同於第一內鏈板214之結構的結構。如圖32中所見，第二內鏈端部邊緣50B具有圍繞第一內鏈中心軸線CA11延伸之一第二倒角250B1，使得第二倒角250B1之一部分安置於第一圓周區域AR11中。第二倒角250B1具有在相對於第二內鏈中心軸線CA12之一徑向方向上界定之一第二徑向寬度RW22。當沿軸向方向D1觀看時，第二倒角250B1自第一內鏈中間邊緣對50C之一者朝向第一內鏈縱向中心線CL11增大。As seen in FIGS. 35 and 36 , the second inner link plate 216 has a structure that is substantially the same as that of the first inner link plate 214 . As seen in Figure 32, the second inner link end edge 50B has a second chamfer 250B1 extending around the first inner link central axis CA11, such that a portion of the second chamfer 250B1 is disposed in the first circumferential area AR11. The second chamfer 250B1 has a second radial width RW22 defined in a radial direction relative to the second inner link center axis CA12. When viewed along the axial direction D1, the second chamfer 250B1 increases from one of the first pair of inner link intermediate edges 50C toward the first inner link longitudinal centerline CL11.

如圖37及圖38中所見，第一外鏈板218具有實質上相同於第一實施例之第一外鏈板18之結構的結構。第一外鏈板218不具有第一實施例之凸出部分80。第一外鏈板218包括一第一外鏈端部部分260、一第二外鏈端部部分262及一第一外鏈中間部分264。第一外鏈端部部分260具有實質上相同於第一實施例之第一外鏈端部部分60之結構的結構。第二外鏈端部部分262具有實質上相同於第一實施例之第二外鏈端部部分62之結構的結構。第一外鏈中間部分264具有實質上相同於第一實施例之第一外鏈中間部分64之結構的結構。As seen in FIGS. 37 and 38 , the first outer link plate 218 has a structure that is substantially the same as that of the first outer link plate 18 of the first embodiment. The first outer link plate 218 does not have the protruding portion 80 of the first embodiment. The first outer link plate 218 includes a first outer link end portion 260, a second outer link end portion 262, and a first outer link middle portion 264. The first outer link end portion 260 has a structure that is substantially the same as the structure of the first outer link end portion 60 of the first embodiment. The second outer link end portion 262 has a structure that is substantially the same as the structure of the second outer link end portion 62 of the first embodiment. The first outer link middle portion 264 has a structure that is substantially the same as the structure of the first outer link middle portion 64 of the first embodiment.

如圖39中所見，第一外鏈端部部分260、第二外鏈端部部分262及第一外鏈中間部分264界定一第一外鏈外周邊邊緣282。第一外鏈外周邊邊緣282包括一第一外鏈端部邊緣282A、一第二外鏈端部邊緣282B及一對第一外鏈中間邊緣282C。第一外鏈端部邊緣282A圍繞第一外鏈端部部分260延伸。第一外鏈端部邊緣282B圍繞第二外鏈端部部分262延伸。第一外鏈中間邊緣對282C沿第一外鏈端部邊緣282A與第二外鏈端部邊緣282B之間的第一外鏈中間部分264延伸。As seen in Figure 39, the first outer link end portion 260, the second outer link end portion 262, and the first outer link middle portion 264 define a first outer link outer peripheral edge 282. The first outer link outer peripheral edge 282 includes a first outer link end edge 282A, a second outer link end edge 282B and a pair of first outer link middle edges 282C. The first outer link end edge 282A extends around the first outer link end portion 260 . The first outer link end edge 282B extends around the second outer link end portion 262 . The first outer link intermediate edge pair 282C extends along the first outer link intermediate portion 264 between the first outer link end edge 282A and the second outer link end edge 282B.

第一外鏈端部邊緣282A、第二外鏈端部邊緣282B及第一外鏈中間邊緣對282C之至少一者具有一倒角。在此實施例中，第一外鏈端部邊緣282A具有圍繞第一外鏈中心軸線CA21延伸之第一倒角82A1，使得第一倒角82A1之一部分安置於圓周區域AR21中，當沿第一外鏈中心軸線CA21之軸向方向D1觀看時，圓周區域AR21界定為自第一外鏈縱向中心線CL21至第一參考線RL21。在此實施例中，自第一外鏈端部邊緣282A省略第一額外倒角82A2。At least one of the first outer link end edge 282A, the second outer link end edge 282B, and the first outer link middle edge pair 282C has a chamfer. In this embodiment, the first outer link end edge 282A has a first chamfer 82A1 extending around the first outer link central axis CA21, such that a portion of the first chamfer 82A1 is disposed in the circumferential area AR21. When viewed in the axial direction D1 of the outer link central axis CA21, the circumferential area AR21 is defined from the first outer link longitudinal centerline CL21 to the first reference line RL21. In this embodiment, the first additional chamfer 82A2 is omitted from the first outer link end edge 282A.

第二外鏈端部邊緣282B具有圍繞第二外鏈中心軸線CA22延伸之第二倒角82B1，使得第二倒角82B1之一部分安置於圓周區域AR22中，當沿軸向方向D1觀看時，圓周區域AR22界定為自第一外鏈縱向中心線CL21至第二參考線RL22。在此實施例中，自第二外鏈端部邊緣282B省略第二額外倒角82B2。The second outer link end edge 282B has a second chamfer 82B1 extending around the second outer link central axis CA22, such that a portion of the second chamfer 82B1 is disposed in the circumferential area AR22, and when viewed along the axial direction D1, the circumference The area AR22 is defined from the first outer link longitudinal center line CL21 to the second reference line RL22. In this embodiment, the second additional chamfer 82B2 is omitted from the second outer link end edge 282B.

如圖39中所見，當沿平行於第一外鏈中心軸線CA21之軸向方向D1觀看時，一第一徑向距離MR221界定為在垂直於第一外鏈縱向中心線CL21之一垂直方向D51上自第一外鏈中心軸線CA21至第一外鏈端部邊緣282A。一最小距離MD221界定為在垂直方向D51上介於第一外鏈中間邊緣對282C之間。最小距離MD221小於第一徑向距離MR221之200%。最小距離MD221等於或大於5 mm。最小距離MD221等於或小於8 mm。最小距離MD221等於或大於第一徑向距離MR221之121%。最小距離MD221等於或小於第一徑向距離MR221之190%。在此實施例中，最小距離MD221係第一徑向距離MR221之142%。然而，最小距離MD221不受限於此實施例及上述範圍。As seen in Figure 39, when viewed along the axial direction D1 parallel to the first outer link center axis CA21, a first radial distance MR221 is defined in a vertical direction D51 perpendicular to the first outer link longitudinal center line CL21. from the first outer link central axis CA21 to the first outer link end edge 282A. A minimum distance MD221 is defined between the pair of first outer link intermediate edges 282C in the vertical direction D51. The minimum distance MD221 is less than 200% of the first radial distance MR221. The minimum distance MD221 is equal to or greater than 5 mm. The minimum distance MD221 is equal to or less than 8 mm. The minimum distance MD221 is equal to or greater than 121% of the first radial distance MR221. The minimum distance MD221 is equal to or less than 190% of the first radial distance MR221. In this embodiment, the minimum distance MD221 is 142% of the first radial distance MR221. However, the minimum distance MD221 is not limited to this embodiment and the above range.

當沿軸向方向D1觀看時，一第一額外徑向距離MR223界定為在垂直方向D51上自第二外鏈中心軸線CA22至第二外鏈端部邊緣282B。最小距離MD221小於第一額外徑向距離MR223之200%。最小距離MD221等於或大於第一額外徑向距離MR223之121%。最小距離MD221等於或小於第一額外徑向距離MR223之190%。在此實施例中，最小距離MD221係第一額外徑向距離MR223之142%。然而，最小距離MD221不受限於上述範圍。When viewed along the axial direction D1, a first additional radial distance MR223 is defined in the vertical direction D51 from the second outer link center axis CA22 to the second outer link end edge 282B. The minimum distance MD221 is less than 200% of the first additional radial distance MR223. The minimum distance MD221 is equal to or greater than 121% of the first additional radial distance MR223. The minimum distance MD221 is equal to or less than 190% of the first additional radial distance MR223. In this embodiment, the minimum distance MD221 is 142% of the first additional radial distance MR223. However, the minimum distance MD221 is not limited to the above range.

如圖40中所見，第一外鏈中間邊緣對282C之至少一者具有等於或大於8.2 mm之一曲率半徑CR21。曲率半徑CR21等於或小於12 mm。在此實施例中，曲率半徑CR21係11.8 mm。然而，曲率半徑CR21不受限於此實施例及上述範圍。As seen in Figure 40, at least one of the first pair of outer link intermediate edges 282C has a radius of curvature CR21 equal to or greater than 8.2 mm. The radius of curvature CR21 is equal to or less than 12 mm. In this embodiment, the radius of curvature CR21 is 11.8 mm. However, the radius of curvature CR21 is not limited to this embodiment and the above range.

如圖39中所見，第一外鏈端部邊緣282A包含至少一第一外鏈筆直邊緣部分282A1及至少一第一外鏈彎曲邊緣部分282A2。第二外鏈端部邊緣282B包含至少一第二外鏈筆直邊緣部分282B1及至少一第二外鏈彎曲邊緣部分282B2。As seen in FIG. 39 , the first outer link end edge 282A includes at least a first outer link straight edge portion 282A1 and at least a first outer link curved edge portion 282A2. The second outer link end edge 282B includes at least a second outer link straight edge portion 282B1 and at least a second outer link curved edge portion 282B2.

如圖40中所見，當沿軸向方向D1觀看時，至少一第一外鏈筆直邊緣部分282A1及至少一第二外鏈筆直邊緣部分282B1與一虛圓VC1相切，虛圓VC1具有等於第一外鏈中間邊緣對282C之至少一者之曲率半徑CR21的一半徑。第一外鏈縱向中心線CL21將第一外鏈板218對分成一第一側SD1及相對於第一外鏈縱向中心線CL21與第一側SD1對置之一第二側SD2。當沿軸向方向D1觀看時，第一側SD1之至少一第一外鏈筆直邊緣部分282A1及第一側SD1之至少一第二外鏈筆直邊緣部分282B1與虛圓VC1相切，虛圓VC1具有等於第一側SD1之第一外鏈中間邊緣對282C之至少一者之曲率半徑CR21的半徑。As seen in Figure 40, when viewed along the axial direction D1, at least one first outer link straight edge portion 282A1 and at least one second outer link straight edge portion 282B1 are tangent to an imaginary circle VC1, and the imaginary circle VC1 has a value equal to the A radius of curvature CR21 of at least one of the outer link intermediate edge pairs 282C. The first outer link longitudinal center line CL21 divides the first outer link plate 218 into a first side SD1 and a second side SD2 opposite to the first side SD1 relative to the first outer link longitudinal center line CL21. When viewed along the axial direction D1, at least one first outer link straight edge portion 282A1 of the first side SD1 and at least one second outer link straight edge portion 282B1 of the first side SD1 are tangent to the imaginary circle VC1, the imaginary circle VC1 Having a radius equal to the radius of curvature CR21 of at least one of the pair of first outer link intermediate edges 282C of the first side SD1.

如圖41中所見，一第一外鏈中間部分264具有一凹槽264R。凹槽264R設置於第三內表面18A上。當沿平行於第一外鏈中心軸線CA21之軸向方向D1觀看時，一第二徑向距離MR222界定於第一外鏈中心軸線CA21與凹槽264R之一邊界之間。第二徑向距離MR222大於第一徑向距離MR221。第二徑向距離MR222大於4.2 mm。第二徑向距離MR222等於或小於4.75 mm。在此實施例中，第二徑向距離MR222係4.71 mm。然而，第二徑向距離MR222可等於或小於第一徑向距離MR221。第二徑向距離MR222不受限於此實施例及上述範圍。As seen in Figure 41, a first outer link intermediate portion 264 has a groove 264R. Groove 264R is provided on third inner surface 18A. When viewed along the axial direction D1 parallel to the first outer link central axis CA21, a second radial distance MR222 is defined between the first outer link central axis CA21 and one boundary of the groove 264R. The second radial distance MR222 is greater than the first radial distance MR221. The second radial distance MR222 is greater than 4.2 mm. The second radial distance MR222 is equal to or less than 4.75 mm. In this embodiment, the second radial distance MR222 is 4.71 mm. However, the second radial distance MR222 may be equal to or less than the first radial distance MR221. The second radial distance MR222 is not limited to this embodiment and the above range.

當沿軸向方向D1觀看時，一第二額外徑向距離MR224界定於第二外鏈中心軸線CA22與凹槽264R之邊界之間。第二額外徑向距離MR224大於第一額外徑向距離MR223。第二額外徑向距離MR224大於4.2 mm。第二額外徑向距離MR224等於或小於4.75 mm。在此實施例中，第二額外徑向距離MR224係4.71 mm。然而，第二額外徑向距離MR224可等於或小於第一額外徑向距離MR223。第二額外徑向距離MR224不受限於此實施例及上述範圍。When viewed in axial direction D1, a second additional radial distance MR224 is defined between the second outer link center axis CA22 and the boundary of the groove 264R. The second additional radial distance MR224 is greater than the first additional radial distance MR223. The second additional radial distance MR224 is greater than 4.2 mm. The second additional radial distance MR224 is equal to or less than 4.75 mm. In this embodiment, the second additional radial distance MR224 is 4.71 mm. However, the second additional radial distance MR224 may be equal to or less than the first additional radial distance MR223. The second additional radial distance MR224 is not limited to this embodiment and the above range.

如圖42中所見，第一外鏈板218之一最大軸向寬度MAW1等於或小於1 mm。第一外鏈板218之最大軸向寬度MAW1等於或大於0.7 mm。最大軸向寬度MAW1界定於軸向方向D1上。在此實施例中，最大軸向寬度MAW1係0.81 mm。然而，最大軸向寬度MAW1不受限於此實施例及上述範圍。As seen in Figure 42, one of the maximum axial widths MAW1 of the first outer link plates 218 is equal to or less than 1 mm. The maximum axial width MAW1 of the first outer link plate 218 is equal to or greater than 0.7 mm. The maximum axial width MAW1 is defined in the axial direction D1. In this example, the maximum axial width MAW1 is 0.81 mm. However, the maximum axial width MAW1 is not limited to this embodiment and the above range.

如圖43及圖44中所見，第二外鏈板220具有實質上相同於第一外鏈板218之結構的結構。第二外鏈板220包括一第三外鏈端部部分270、一第四外鏈端部部分272及一第二外鏈中間部分274。第三外鏈端部部分270具有實質上相同於第一外鏈端部部分260之結構的結構。第四外鏈端部部分272具有實質上相同於第二外鏈端部部分262之結構的結構。第二外鏈中間部分274具有實質上相同於第一外鏈中間部分264之結構的結構。因此，為簡潔起見，此處將不再詳細描述第二外鏈板220。As seen in FIGS. 43 and 44 , the second outer link plate 220 has a structure that is substantially the same as that of the first outer link plate 218 . The second outer link plate 220 includes a third outer link end portion 270, a fourth outer link end portion 272, and a second outer link middle portion 274. The third outer link end portion 270 has a structure that is substantially the same as the structure of the first outer link end portion 260 . The fourth outer link end portion 272 has a structure that is substantially the same as the structure of the second outer link end portion 262 . The second outer link middle portion 274 has a structure that is substantially the same as the structure of the first outer link middle portion 264 . Therefore, for the sake of brevity, the second outer link plate 220 will not be described in detail here.

如圖31中所見，第一倒角250A1經傾斜以在第二齒TH2嚙合於外鏈間隔SP2中時使第一內鏈板214之第一內鏈端部部分30適合於第二齒TH2之一輪廓。第二倒角250B1經傾斜以在第二齒TH2嚙合於外鏈間隔SP2中時使第一內鏈板214之第二內鏈端部部分32適合於第二齒TH2之輪廓。第三倒角252A1經傾斜以在第二齒TH2嚙合於外鏈間隔SP2中時使第二內鏈板216之第三內鏈端部部分40適合於第二齒TH2之輪廓。第四倒角252B1經傾斜以在第二齒TH2嚙合於外鏈間隔SP2中時使第二內鏈板216之第四內鏈端部部分42適合於第二齒TH2之輪廓。上述特徵提高自行車鏈輪B51與自行車鏈條212之間的鏈條保持效能。 第三實施例 As seen in Figure 31, the first chamfer 250A1 is beveled to fit the first inner link end portion 30 of the first inner link plate 214 into the second tooth TH2 when the second tooth TH2 is engaged in the outer link spacing SP2. An outline. The second chamfer 250B1 is beveled to adapt the second inner link end portion 32 of the first inner link plate 214 to the contour of the second tooth TH2 when the second tooth TH2 is engaged in the outer link spacing SP2. The third chamfer 252A1 is beveled to conform the third inner link end portion 40 of the second inner link plate 216 to the profile of the second tooth TH2 when the second tooth TH2 is engaged in the outer link spacing SP2. The fourth chamfer 252B1 is beveled to conform the fourth inner link end portion 42 of the second inner link plate 216 to the profile of the second tooth TH2 when the second tooth TH2 is engaged in the outer link spacing SP2. The above features improve the chain retention efficiency between the bicycle sprocket B51 and the bicycle chain 212. Third embodiment

下文將參考圖45至圖47描述根據一第三實施例之一自行車鏈條312。除第一內鏈板214之外，自行車鏈條312具有相同於自行車鏈條212之結構的結構。因此，具有實質上相同於上述實施例中之元件之功能的元件在此處將標有相同元件符號，且為簡潔起見，此處將不再詳細描述及/或繪示該等元件。A bicycle chain 312 according to a third embodiment will be described below with reference to FIGS. 45 to 47 . The bicycle chain 312 has the same structure as the bicycle chain 212 except for the first inner link plate 214 . Therefore, elements having substantially the same function as elements in the above-described embodiments will be labeled with the same element numbers herein, and for the sake of brevity, these elements will not be described and/or illustrated in detail here.

如圖45中所見，自行車鏈條312包括一第一內鏈板314、第二內鏈板216、第一外鏈板218及第二外鏈板220。在此實施例中，自行車鏈條312包括複數個第一內鏈板314。然而，第一內鏈板314之一總數不受限於此實施例。As seen in FIG. 45 , the bicycle chain 312 includes a first inner link plate 314 , a second inner link plate 216 , a first outer link plate 218 and a second outer link plate 220 . In this embodiment, the bicycle chain 312 includes a plurality of first inner link plates 314 . However, the total number of first inner link plates 314 is not limited to this embodiment.

如圖46中所見，第一內鏈板314具有實質上相同於第二實施例之第一內鏈板214之結構的結構。第一內鏈端部邊緣50A具有圍繞第一內鏈中心軸線CA11延伸之第一倒角50A1，使得第一倒角50A1之一部分安置於第一圓周區域AR11中。As seen in FIG. 46 , the first inner link plate 314 has a structure that is substantially the same as the structure of the first inner link plate 214 of the second embodiment. The first inner link end edge 50A has a first chamfer 50A1 extending around the first inner link central axis CA11 such that a portion of the first chamfer 50A1 is disposed in the first circumferential area AR11.

如圖47中所見，第一內鏈端部部分30可部分具有一圓形形狀。在此一實施例中，第一內鏈端部部分30具有界定為自第一內鏈中心軸線CA11至第一內鏈端部邊緣50A之一第一徑向距離MR311。第一徑向距離MR311等於或大於4.36 mm。 第四實施例 As seen in Figure 47, the first inner link end portion 30 may partially have a circular shape. In this embodiment, the first inner link end portion 30 has a first radial distance MR311 defined from the first inner link central axis CA11 to the first inner link end edge 50A. The first radial distance MR311 is equal to or greater than 4.36 mm. Fourth embodiment

下文將參考圖48及圖49描述根據一第四實施例之一自行車鏈條412。除第二內鏈板216之外，自行車鏈條412具有相同於自行車鏈條212之結構的結構。因此，具有實質上相同於上述實施例中之元件之功能的元件在此處將標有相同元件符號，且為簡潔起見，此處將不再詳細描述及/或繪示該等元件。A bicycle chain 412 according to a fourth embodiment will be described below with reference to FIGS. 48 and 49 . The bicycle chain 412 has the same structure as the bicycle chain 212 except for the second inner link plate 216 . Therefore, elements having substantially the same function as elements in the above-described embodiments will be labeled with the same element numbers herein, and for the sake of brevity, these elements will not be described and/or illustrated in detail here.

如圖48中所見，自行車鏈條412包括第一內鏈板214、一第二內鏈板416、第一外鏈板218及第二外鏈板220。在此實施例中，自行車鏈條412包括複數個第二內鏈板416。然而，第二內鏈板416之一總數不受限於此實施例。As seen in FIG. 48 , the bicycle chain 412 includes a first inner link plate 214 , a second inner link plate 416 , a first outer link plate 218 and a second outer link plate 220 . In this embodiment, the bicycle chain 412 includes a plurality of second inner link plates 416 . However, the total number of second inner link plates 416 is not limited to this embodiment.

如圖49中所見，第一最大距離MD11大於第三最大距離MD13。第三最大距離MD13小於第四最大距離MD14。第四最大距離MD14實質上等於第一最大距離MD11及第二最大距離MD12。然而，第一最大距離MD11可實質上等於或小於第三最大距離MD13。第三最大距離MD13可實質上等於或大於第四最大距離MD14。第四最大距離MD14可不同於第一最大距離MD11及第二最大距離MD12之至少一者。As seen in FIG. 49, the first maximum distance MD11 is larger than the third maximum distance MD13. The third maximum distance MD13 is smaller than the fourth maximum distance MD14. The fourth maximum distance MD14 is substantially equal to the first maximum distance MD11 and the second maximum distance MD12. However, the first maximum distance MD11 may be substantially equal to or smaller than the third maximum distance MD13. The third maximum distance MD13 may be substantially equal to or greater than the fourth maximum distance MD14. The fourth maximum distance MD14 may be different from at least one of the first maximum distance MD11 and the second maximum distance MD12.

如本文所使用，術語「包括」及其衍生詞意欲為開放式術語，其特指存在所陳述之特徵、元件、組件、群組、整體及/或步驟，但不排除存在其他未陳述之特徵、元件、組件、群組、整體及/或步驟。此概念亦適用於類似含義之用語，例如術語「具有」、「包含」及其衍生詞。As used herein, the term "comprising" and its derivatives are intended to be open-ended terms that specifically refer to the presence of stated features, elements, components, groups, integers and/or steps but do not exclude the presence of other unstated features. , element, component, group, whole and/or step. This concept also applies to terms of similar meaning, such as the terms "have", "include" and their derivatives.

以單數形式使用之術語「構件」、「區段」、「部分」、「部件」、「元件」、「本體」及「結構」可具有一單一部件或複數個部件之雙重含義。When used in the singular, the terms "member", "section", "portion", "component", "element", "body" and "structure" may have the dual meaning of a single component or a plurality of components.

本申請案中所敘述之諸如「第一」及「第二」之序數僅為識別符，且不具有任何其他含義(例如一特定順序及其類似者)。此外，例如，術語「第一元件」本身不隱含存在「第二元件」，且術語「第二元件」本身不隱含存在「第一元件」。Ordinal numbers such as "first" and "second" described in this application are only identifiers and do not have any other meaning (such as a specific order and the like). Furthermore, for example, the term "first element" does not by itself imply the presence of a "second element", and the term "second element" by itself does not imply the presence of a "first element".

如本文所使用，術語「一對…」除涵蓋其中一對元件具有彼此相同之形狀或結構的構形之外，亦可涵蓋其中該對元件具有彼此不同之形狀或結構的構形。As used herein, the term "a pair of..." may not only cover a configuration in which a pair of elements have the same shape or structure as each other, but may also cover a configuration in which the pair of elements have different shapes or structures from each other.

在本文中，術語「一」、「一或多個」及「至少一」可互換使用。In this document, the terms "a", "one or more" and "at least one" are used interchangeably.

最後，如本文所使用，諸如「實質上」、「約」及「大致」之程度術語意謂未使最終結果顯著改變之經修飾術語之一合理偏差量。本申請案中所描述之所有數值可被解釋為包含諸如「實質上」、「約」及「大致」之術語。Finally, as used herein, terms of degree such as "substantially," "about," and "approximately" mean a reasonable amount of deviation from the modified term that does not materially alter the end result. All numerical values described in this application may be interpreted to include terms such as "substantially," "about," and "approximately."

顯而易見，可鑑於上述教示來進行本發明之諸多修改及變動。因此，應瞭解，可在隨附申請專利範圍之範疇內依除本文具體所描述之方式之外之方式實踐本發明。Obviously, many modifications and variations of the present invention are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described herein.

10:自行車 12:自行車鏈條 14:第一內鏈板 14A:第一內表面 14B:第一外表面 16:第二內鏈板 16A:第二內表面 16B:第二外表面 18:第一外鏈板 18A:第三內表面 18B:第三外表面 20:第二外鏈板 20A:第四內表面 20B:第四外表面 22:第一鏈銷 24:第二鏈銷 26:第一鏈條滾子 26A:第一徑向外圓周表面 26B:第一徑向內圓周表面 28:第二鏈條滾子 30:第一內鏈端部部分 30A:第一管狀部分 32:第二內鏈端部部分 32A:第二管狀部分 34:第一內鏈中間部分 34A:凹入部分 36:第一內鏈開口 38:第二內鏈開口 40:第三內鏈端部部分 40A:第三管狀部分 42:第四內鏈端部部分 42A:第四管狀部分 44:第二內鏈中間部分 44A:凹入部分 46:第三內鏈開口 48:第四內鏈開口 50:第一內鏈外周邊邊緣 50A:第一內鏈端部邊緣 50A1:第一倒角 50B:第二內鏈端部邊緣 50B1:第二倒角 50C:第一內鏈中間邊緣 52:第二內鏈外周邊邊緣 52A:第三內鏈端部邊緣 52A1:第三倒角 52B:第四內鏈端部邊緣 52B1:第四倒角 52C:第二內鏈中間邊緣 54:階梯狀部分 54A:第一表面 54B:第二表面 60:第一外鏈端部部分 62:第二外鏈端部部分 64:第一外鏈中間部分 64A:第一外鏈中間表面 66:第一外鏈開口 68:第二外鏈開口 70:第三外鏈端部部分 72:第四外鏈端部部分 74:第二外鏈中間部分 74A:第二外鏈中間表面 76:第三外鏈開口 78:第四外鏈開口 80:凸出部分 82:第一外鏈外周邊邊緣 82A:第一外鏈端部邊緣 82A1:第一倒角 82A2:第一額外倒角 82A11:第一圓周端 82A12:第一額外圓周端 82B:第二外鏈端部邊緣 82B1:第二倒角 82B2:第二額外倒角 82B11:第二圓周端 82B12:第二額外圓周端 82C:第一外鏈中間邊緣 84:第二外鏈外周邊邊緣 84A:第三外鏈端部邊緣 84A1:第三倒角 84A2:第三額外倒角 84B:第四外鏈端部邊緣 84B1:第四倒角 84B2:第四額外倒角 84C:第二外鏈中間邊緣 212:自行車鏈條 214:第一內鏈板 216:第二內鏈板 218:第一外鏈板 220:第二外鏈板 250A1:第一倒角 250B1:第二倒角 252A1:第三倒角 252B1:第四倒角 260:第一外鏈端部部分 262:第二外鏈端部部分 264:第一外鏈中間部分 264R:凹槽 270:第三外鏈端部部分 272:第四外鏈端部部分 274:第二外鏈中間部分 282:第一外鏈外周邊邊緣 282A:第一外鏈端部邊緣 282A1:第一外鏈筆直邊緣部分 282A2:第一外鏈彎曲邊緣部分 282B:第二外鏈端部邊緣 282B1:第二外鏈筆直邊緣部分 282B2:第二外鏈彎曲邊緣部分 282C:第一外鏈中間邊緣 312:自行車鏈條 314:第一內鏈板 412:自行車鏈條 416:第二內鏈板 A1:旋轉中心軸線 A2:旋轉中心軸線 AD1:軸向距離 AD2:額外軸向距離 AG21:第一圓周角 AG22:第一額外圓周角 AG23:第二圓周角 AG24:第二額外圓周 AG31:第三圓周角 AG32:第三額外圓周角 AG33:第四圓周角 AG34:第四額外圓周角 AP1:突出量 AR11:第一圓周區域 AR12:第二圓周區域 AR13:第三圓周區域 AR14:第四圓周區域 AR21:圓周區域 AR22:圓周區域 B1:自行車車架 B2:手把 B3:車座 B4:傳動系 B5:自行車曲柄總成 B6:後鏈輪/自行車鏈輪 B7:前變速器 B8:後變速器 B51:前鏈輪/自行車鏈輪 CA11:第一內鏈中心軸線 CA12:第二內鏈中心軸線 CA13:第三內鏈中心軸線 CA14:第四內鏈中心軸線 CA21:第一外鏈中心軸線 CA22:第二外鏈中心軸線 CA23:第三外鏈中心軸線 CA24:第四外鏈中心軸線 CL11:第一內鏈縱向中心線 CL12:第二內鏈縱向中心線 CL21:第一外鏈縱向中心線 CL22:第二外鏈縱向中心線 CR21:曲率半徑 D1:軸向方向 D21:第一內鏈縱向方向 D22:第二內鏈縱向方向 D31:第一垂直方向 D32:第二垂直方向 D33:第三垂直方向 D34:第四垂直方向 D41:第一外鏈縱向方向 D42:第二外鏈縱向方向 D51:垂直方向 DD:傳動方向 ED11:第一延伸距離 MAW1:最大軸向寬度 MD11:第一最大距離 MD12:第二最大距離 MD13:第三最大距離 MD14:第四最大距離 MD221:最小距離 ML11:第一最大長度 ML12:第二最大長度 MR11:第一最小徑向距離 MR12:第一最大徑向距離 MR21:第二最小徑向距離 MR22:第二最大徑向距離 MR31:第三最小徑向距離 MR32:第三最大徑向距離 MR41:第四最小徑向距離 MR42:第四最大徑向距離 MR221:第一徑向距離 MR222:第二徑向距離 MR223:第一額外徑向距離 MR224:第二額外徑向距離 MR311:第一徑向距離 OA1:重疊區域 OA1A:最大圓周長度 OA2:重疊區域 OA2A:最大圓周長度 PA1:第一樞軸線 PA2:第二樞軸線 RL11:第一參考線 RL12:第二參考線 RL13:第三參考線 RL14:第四參考線 RL21:第一參考線 RL22:第二參考線 RW1:第一徑向寬度 RW2:第二徑向寬度 RW3:第三徑向寬度 RW4:第四徑向寬度 RW21:第一徑向寬度 RW22:第二徑向寬度 SD1:第一側 SD2:第二側 SP1:內鏈間隔 SP2:外鏈間隔 T11:第一軸向厚度 T12:第二軸向厚度 T21:第三軸向厚度 T22:第四軸向厚度 TH1:第一齒 TH2:第二齒 TH11:第一軸向寬度 TH21:第二軸向寬度 VC1:虛圓 10:Bicycle 12:Bicycle chain 14:First inner chain plate 14A: First inner surface 14B: First outer surface 16:Second inner chain plate 16A: Second inner surface 16B: Second outer surface 18:First outer link plate 18A:Third inner surface 18B:Third outer surface 20:Second outer link plate 20A: Fourth inner surface 20B: Fourth outer surface 22:First chain pin 24:Second chain pin 26:First chain roller 26A: First radial outer circumferential surface 26B: First radial inner circumferential surface 28:Second chain roller 30: First inner link end part 30A: First tubular part 32:Second inner link end part 32A: Second tubular section 34: The middle part of the first inner link 34A: concave part 36: First inner link opening 38:Second inner link opening 40: The third inner link end part 40A: Third tubular part 42: The fourth inner link end part 42A: Fourth tubular section 44: The middle part of the second inner link 44A: Recessed part 46: The third inner link opening 48: The fourth inner link opening 50: The outer peripheral edge of the first inner link 50A: First inner link end edge 50A1: First chamfer 50B: Second inner link end edge 50B1: Second chamfer 50C: middle edge of first inner link 52: The outer peripheral edge of the second inner link 52A: Third inner link end edge 52A1:Third chamfer 52B: Fourth inner link end edge 52B1: Fourth chamfer 52C: middle edge of second inner link 54: Stepped part 54A: First surface 54B: Second surface 60: The end part of the first outer link 62: The end part of the second outer link 64: The middle part of the first external link 64A: Middle surface of first outer link 66: The first external link opening 68: The second external link opening 70: The end part of the third external link 72: The end part of the fourth external link 74: The middle part of the second external link 74A: Second outer link middle surface 76: The third external link opening 78: The fourth external link opening 80:Protruding part 82: The outer peripheral edge of the first outer link 82A: First outer link end edge 82A1: First chamfer 82A2: First additional chamfer 82A11: First circumferential end 82A12: First extra circumferential end 82B: Second outer link end edge 82B1: Second chamfer 82B2: Second additional chamfer 82B11: Second circumferential end 82B12: Second extra circumferential end 82C: Middle edge of the first outer link 84: The outer peripheral edge of the second outer link 84A: The end edge of the third outer link 84A1:Third chamfer 84A2: Third additional chamfer 84B: End edge of the fourth outer link 84B1: Fourth chamfer 84B2: Fourth additional chamfer 84C: Middle edge of the second outer link 212:Bicycle chain 214:First inner chain plate 216:Second inner chain plate 218:First outer link plate 220:Second outer link plate 250A1: First chamfer 250B1: Second chamfer 252A1:Third chamfer 252B1: Fourth chamfer 260: The end part of the first external link 262: The end part of the second external link 264: The middle part of the first external link 264R: Groove 270: The end part of the third external link 272: The end part of the fourth external link 274: The middle part of the second external link 282: The outer peripheral edge of the first outer link 282A: First outer link end edge 282A1: The straight edge part of the first outer link 282A2: Curved edge part of the first outer link 282B: Second outer link end edge 282B1: The straight edge part of the second outer chain 282B2: Curved edge part of the second outer link 282C: Middle edge of the first outer link 312:Bicycle chain 314:First inner chain plate 412:Bicycle chain 416:Second inner chain plate A1: Rotation center axis A2:Rotation center axis AD1: axial distance AD2: Additional axial distance AG21: First circumferential angle AG22: First additional circumferential angle AG23: Second circumferential angle AG24: Second extra circle AG31: The third circumferential angle AG32: The third additional circumferential angle AG33: The fourth circumferential angle AG34: The fourth additional circumferential angle AP1: Protrusion amount AR11: First circumferential area AR12: Second circumferential area AR13: The third circumferential area AR14: The fourth circumferential area AR21: Circular area AR22: Circular area B1:Bicycle frame B2: Handle B3: Car seat B4: Transmission system B5: Bicycle crank assembly B6: Rear sprocket/bicycle sprocket B7: Front derailleur B8: Rear derailleur B51: Front sprocket/bicycle sprocket CA11: first inner link center axis CA12: Second inner link center axis CA13: The third inner link center axis CA14: The fourth inner link center axis CA21: first outer link center axis CA22: Second external link center axis CA23: The third external link center axis CA24: The fourth external link center axis CL11: Longitudinal center line of the first inner link CL12: Second inner link longitudinal centerline CL21: Longitudinal center line of the first external link CL22: Second outer link longitudinal centerline CR21: radius of curvature D1: axial direction D21: Longitudinal direction of the first inner link D22: Second inner link longitudinal direction D31: first vertical direction D32: Second vertical direction D33: The third vertical direction D34: The fourth vertical direction D41: Longitudinal direction of the first external link D42: Longitudinal direction of the second external link D51: vertical direction DD: transmission direction ED11: first extended distance MAW1: Maximum axial width MD11: first maximum distance MD12: second largest distance MD13: The third largest distance MD14: The fourth largest distance MD221: minimum distance ML11: First maximum length ML12: Second maximum length MR11: First minimum radial distance MR12: First maximum radial distance MR21: Second minimum radial distance MR22: Second maximum radial distance MR31: Third minimum radial distance MR32: Third maximum radial distance MR41: Fourth minimum radial distance MR42: The fourth largest radial distance MR221: First radial distance MR222: Second radial distance MR223: First additional radial distance MR224: Second additional radial distance MR311: first radial distance OA1: Overlapping area OA1A: Maximum circumference length OA2: Overlapping area OA2A: Maximum circumference length PA1: first pivot line PA2: Second pivot line RL11: First reference line RL12: Second reference line RL13: Third reference line RL14: The fourth reference line RL21: First reference line RL22: Second reference line RW1: first radial width RW2: second radial width RW3: third radial width RW4: fourth radial width RW21: first radial width RW22: Second radial width SD1: first side SD2: Second side SP1: Internal link interval SP2: External link interval T11: First axial thickness T12: Second axial thickness T21: Third axial thickness T22: Fourth axial thickness TH1: first tooth TH2: Second tooth TH11: First axial width TH21: Second axial width VC1:virtual circle

將藉由參考結合附圖考量之以下詳細描述來容易地獲得本發明及其諸多伴隨優點之一更全面瞭解且較佳地理解本發明及其諸多伴隨優點。A fuller appreciation and a better understanding of the present invention and one of its many attendant advantages will readily be obtained by reference to the following detailed description, considered in conjunction with the accompanying drawings.

圖1係具有使用根據一第一實施例之一自行車鏈條之一傳動系之一自行車之一側視圖。Figure 1 is a side view of a bicycle using a drive train of a bicycle chain according to a first embodiment.

圖2係圖1中所繪示之自行車鏈條及一鏈輪之一部分透視圖。FIG. 2 is a partial perspective view of the bicycle chain and a sprocket shown in FIG. 1 .

圖3係圖1中所繪示之自行車鏈條之一部分平面圖。FIG. 3 is a partial plan view of the bicycle chain shown in FIG. 1 .

圖4係圖1中所繪示之自行車鏈條之一第一內鏈板之一透視圖。FIG. 4 is a perspective view of a first inner link plate of the bicycle chain shown in FIG. 1 .

圖5係圖1中所繪示之自行車鏈條之第一內鏈板之另一透視圖。FIG. 5 is another perspective view of the first inner link plate of the bicycle chain shown in FIG. 1 .

圖6係圖1中所繪示之自行車鏈條之第一內鏈板之一側視圖。FIG. 6 is a side view of the first inner link plate of the bicycle chain shown in FIG. 1 .

圖7係圖1中所繪示之自行車鏈條之第一內鏈板之一仰視圖。FIG. 7 is a bottom view of the first inner link plate of the bicycle chain shown in FIG. 1 .

圖8係圖1中所繪示之自行車鏈條之第一內鏈板之另一側視圖。FIG. 8 is another side view of the first inner link plate of the bicycle chain shown in FIG. 1 .

圖9係圖1中所繪示之自行車鏈條之一第二內鏈板之一透視圖。FIG. 9 is a perspective view of a second inner link plate of the bicycle chain shown in FIG. 1 .

圖10係圖1中所繪示之自行車鏈條之第二內鏈板之另一透視圖。FIG. 10 is another perspective view of the second inner link plate of the bicycle chain shown in FIG. 1 .

圖11係圖1中所繪示之自行車鏈條之第二內鏈板之一側視圖。FIG. 11 is a side view of the second inner link plate of the bicycle chain shown in FIG. 1 .

圖12係圖1中所繪示之自行車鏈條之第二內鏈板之一仰視圖。FIG. 12 is a bottom view of the second inner link plate of the bicycle chain shown in FIG. 1 .

圖13係圖1中所繪示之自行車鏈條之第二內鏈板之另一側視圖。FIG. 13 is another side view of the second inner link plate of the bicycle chain shown in FIG. 1 .

圖14係圖1中所繪示之自行車鏈條之第一內鏈板之一放大側視圖。FIG. 14 is an enlarged side view of the first inner link plate of the bicycle chain shown in FIG. 1 .

圖15係圖1中所繪示之自行車鏈條之第二內鏈板之一放大側視圖。FIG. 15 is an enlarged side view of the second inner link plate of the bicycle chain shown in FIG. 1 .

圖16係沿圖13之線XVI-XVI取得之內鏈板之一橫截面圖。Figure 16 is a cross-sectional view of the inner link plate taken along line XVI-XVI of Figure 13.

圖17係圖1中所繪示之自行車鏈條之一第一外鏈板之一透視圖。FIG. 17 is a perspective view of a first outer link plate of the bicycle chain shown in FIG. 1 .

圖18係圖1中所繪示之自行車鏈條之第一外鏈板之另一透視圖。FIG. 18 is another perspective view of the first outer link plate of the bicycle chain shown in FIG. 1 .

圖19係圖1中所繪示之自行車鏈條之第一外鏈板之一側視圖。FIG. 19 is a side view of the first outer link plate of the bicycle chain shown in FIG. 1 .

圖20係圖1中所繪示之自行車鏈條之第一外鏈板之一仰視圖。FIG. 20 is a bottom view of the first outer link plate of the bicycle chain shown in FIG. 1 .

圖21係圖1中所繪示之自行車鏈條之第一外鏈板之另一側視圖。Figure 21 is another side view of the first outer link plate of the bicycle chain shown in Figure 1 .

圖22係圖1中所繪示之自行車鏈條之一第二外鏈板之一透視圖。FIG. 22 is a perspective view of a second outer link plate of the bicycle chain shown in FIG. 1 .

圖23係圖1中所繪示之自行車鏈條之第二外鏈板之另一透視圖。Figure 23 is another perspective view of the second outer link plate of the bicycle chain shown in Figure 1 .

圖24係圖1中所繪示之自行車鏈條之第二外鏈板之一側視圖。Figure 24 is a side view of the second outer link plate of the bicycle chain shown in Figure 1 .

圖25係圖1中所繪示之自行車鏈條之第二外鏈板之一仰視圖。FIG. 25 is a bottom view of the second outer link plate of the bicycle chain shown in FIG. 1 .

圖26係圖1中所繪示之自行車鏈條之第二外鏈板之另一側視圖。FIG. 26 is another side view of the second outer link plate of the bicycle chain shown in FIG. 1 .

圖27係圖1中所繪示之自行車鏈條之第一外鏈板之一放大側視圖。FIG. 27 is an enlarged side view of the first outer link plate of the bicycle chain shown in FIG. 1 .

圖28係圖1中所繪示之自行車鏈條之第二外鏈板之一放大側視圖。FIG. 28 is an enlarged side view of the second outer link plate of the bicycle chain shown in FIG. 1 .

圖29係圖1中所繪示之自行車鏈條之第一內鏈板及一鏈輪之一側視圖。Figure 29 is a side view of the first inner link plate and a sprocket of the bicycle chain shown in Figure 1 .

圖30係根據一第二實施例之一自行車鏈條之一部分透視圖。Figure 30 is a partial perspective view of a bicycle chain according to a second embodiment.

圖31係圖30中所繪示之自行車鏈條之一部分平面圖。Figure 31 is a partial plan view of the bicycle chain shown in Figure 30.

圖32係圖31中所繪示之自行車鏈條之一第一內鏈板之一透視圖。Figure 32 is a perspective view of a first inner link plate of the bicycle chain shown in Figure 31.

圖33係圖31中所繪示之自行車鏈條之第一內鏈板之另一透視圖。Figure 33 is another perspective view of the first inner link plate of the bicycle chain shown in Figure 31.

圖34係圖31中所繪示之自行車鏈條之第一內鏈板之一放大側視圖。FIG. 34 is an enlarged side view of the first inner link plate of the bicycle chain shown in FIG. 31 .

圖35係圖31中所繪示之自行車鏈條之一第二內鏈板之一透視圖。Figure 35 is a perspective view of a second inner link plate of the bicycle chain shown in Figure 31.

圖36係圖31中所繪示之自行車鏈條之第二內鏈板之另一透視圖。Figure 36 is another perspective view of the second inner link plate of the bicycle chain shown in Figure 31.

圖37係圖31中所繪示之自行車鏈條之一第一外鏈板之一透視圖。Figure 37 is a perspective view of a first outer link plate of the bicycle chain shown in Figure 31.

圖38係圖31中所繪示之自行車鏈條之第一外鏈板之另一透視圖。Figure 38 is another perspective view of the first outer link plate of the bicycle chain shown in Figure 31.

圖39係圖31中所繪示之自行車鏈條之第一外鏈板之一放大側視圖。Figure 39 is an enlarged side view of the first outer link plate of the bicycle chain shown in Figure 31.

圖40係圖31中所繪示之自行車鏈條之第一外鏈板之一側視圖。Figure 40 is a side view of the first outer link plate of the bicycle chain shown in Figure 31.

圖41係圖31中所繪示之自行車鏈條之第一外鏈板之另一放大側視圖。Figure 41 is another enlarged side view of the first outer link plate of the bicycle chain shown in Figure 31.

圖42係圖31中所繪示之自行車鏈條之第一外鏈板之一俯視圖。Figure 42 is a top view of the first outer link plate of the bicycle chain shown in Figure 31.

圖43係圖31中所繪示之自行車鏈條之一第二外鏈板之一透視圖。Figure 43 is a perspective view of a second outer link plate of the bicycle chain shown in Figure 31.

圖44係圖31中所繪示之自行車鏈條之第二外鏈板之另一透視圖。Figure 44 is another perspective view of the second outer link plate of the bicycle chain shown in Figure 31.

圖45係根據一第三實施例之一自行車鏈條之一部分平面圖。Figure 45 is a partial plan view of a bicycle chain according to a third embodiment.

圖46係圖45中所繪示之自行車鏈條之一第一內鏈板之一放大側視圖。Figure 46 is an enlarged side view of a first inner link plate of the bicycle chain shown in Figure 45.

圖47係根據第三實施例之一修改方案之一自行車鏈條之一第一內鏈板之一放大側視圖。Figure 47 is an enlarged side view of a first inner link plate of a bicycle chain according to a modification of the third embodiment.

圖48係根據一第四實施例之一自行車鏈條之一部分平面圖。Figure 48 is a partial plan view of a bicycle chain according to a fourth embodiment.

圖49係圖48中所繪示之自行車鏈條之一第二內鏈板之一放大側視圖。Figure 49 is an enlarged side view of a second inner link plate of the bicycle chain shown in Figure 48.

14:第一內鏈板 14:First inner chain plate

14A:第一內表面 14A: First inner surface

26:第一鏈條滾子 26:First chain roller

26A:第一徑向外圓周表面 26A: First radial outer circumferential surface

26B:第一徑向內圓周表面 26B: First radial inner circumferential surface

30:第一內鏈端部部分 30: First inner link end part

30A:第一管狀部分 30A: First tubular part

32:第二內鏈端部部分 32:Second inner link end part

32A:第二管狀部分 32A: Second tubular section

34:第一內鏈中間部分 34: The middle part of the first inner link

36:第一內鏈開口 36: First inner link opening

38:第二內鏈開口 38:Second inner link opening

50:第一內鏈外周邊邊緣 50: The outer peripheral edge of the first inner link

50A:第一內鏈端部邊緣 50A: First inner link end edge

50A1:第一倒角 50A1: First chamfer

50B:第二內鏈端部邊緣 50B: Second inner link end edge

50B1:第二倒角 50B1: Second chamfer

50C:第一內鏈中間邊緣 50C: middle edge of first inner link

AR11:第一圓周區域 AR11: First circumferential area

AR12:第二圓周區域 AR12: Second circumferential area

CA11:第一內鏈中心軸線 CA11: first inner link center axis

CA12:第二內鏈中心軸線 CA12: Second inner link center axis

CL11:第一內鏈縱向中心線 CL11: Longitudinal center line of the first inner link

D21:第一內鏈縱向方向 D21: Longitudinal direction of the first inner link

D31:第一垂直方向 D31: first vertical direction

D32:第二垂直方向 D32: Second vertical direction

DD:傳動方向 DD: transmission direction

ED11:第一延伸距離 ED11: first extended distance

MD11:第一最大距離 MD11: first maximum distance

MD12:第二最大距離 MD12: second largest distance

ML11:第一最大長度 ML11: First maximum length

MR11:第一最小徑向距離 MR11: First minimum radial distance

MR12:第一最大徑向距離 MR12: First maximum radial distance

MR21:第二最小徑向距離 MR21: Second minimum radial distance

MR22:第二最大徑向距離 MR22: Second maximum radial distance

PA1:第一樞軸線 PA1: first pivot line

PA2:第二樞軸線 PA2: Second pivot line

RL11:第一參考線 RL11: First reference line

RL12:第二參考線 RL12: Second reference line

RW1:第一徑向寬度 RW1: first radial width

RW2:第二徑向寬度 RW2: second radial width

Claims (11)

一種自行車鏈條，其包括：一第一內鏈板，其包括：一第一內鏈端部部分，其包含具有一第一內鏈中心軸線之一第一內鏈開口；一第二內鏈端部部分，其包含具有沿該第一內鏈中心軸線延伸之一第二內鏈中心軸線之一第二內鏈開口，該第二內鏈中心軸線在一第一內鏈縱向方向上與該第一內鏈中心軸線間隔開；及一第一內鏈中間部分，其使該第一內鏈端部部分及該第二內鏈端部部分互連，該第一內鏈端部部分、該第二內鏈端部部分及該第一內鏈中間部分界定一第一內鏈外周邊邊緣，該第一內鏈外周邊邊緣包括：一第一內鏈端部邊緣，其圍繞該第一內鏈端部部分延伸；一第二內鏈端部邊緣，其圍繞該第二內鏈端部部分延伸；及一對第一內鏈中間邊緣，其沿該第一內鏈端部邊緣與該第二內鏈端部邊緣之間的該第一內鏈中間部分延伸；及一第二內鏈板，其包括：一第三內鏈端部部分，其包含具有延伸穿過該第一內鏈開口之一第三內鏈中心軸線之一第三內鏈開口；一第四內鏈端部部分，其包含具有延伸穿過該第二內鏈開口之一第四內鏈中心軸線之一第四內鏈開口，該第四內鏈中心軸線在一第二內鏈縱向方向上與該第三內鏈中心軸線間隔開；及 一第二內鏈中間部分，其使該第三內鏈端部部分及該第四內鏈端部部分互連，該第三內鏈端部部分、該第四內鏈端部部分及該第二內鏈中間部分界定一第二內鏈外周邊邊緣，該第二內鏈外周邊邊緣包括：一第三內鏈端部邊緣，其圍繞該第三內鏈端部部分延伸；一第四內鏈端部邊緣，其圍繞該第四內鏈端部部分延伸；及一對第二內鏈中間邊緣，其沿該第三內鏈端部邊緣與該第四內鏈端部邊緣之間的該第二內鏈中間部分延伸，當沿該第一內鏈中心軸線之一軸向方向觀看時，該第一內鏈端部部分與一鏈輪之一齒重疊，以在該自行車鏈條與該鏈輪嚙合之一狀態中提供一重疊區域，且該重疊區域具有等於或大於0.45mm之一最大圓周長度。 A bicycle chain includes: a first inner link plate, which includes: a first inner link end portion including a first inner link opening having a first inner link center axis; a second inner link end a second inner link opening having a second inner link central axis extending along the first inner link central axis, the second inner link central axis being in contact with the first inner link longitudinal direction an inner link central axis spaced apart; and a first inner link intermediate portion interconnecting the first inner link end portion and the second inner link end portion, the first inner link end portion, the third inner link end portion The two inner link end portions and the first inner link middle portion define a first inner link outer peripheral edge, the first inner link outer peripheral edge including: a first inner link end edge surrounding the first inner link end portions extending; a second inner link end edge extending around the second inner link end portion; and a pair of first inner link intermediate edges along the first inner link end edge and the second inner link end portion; the first inner link intermediate portion extending between the inner link end edges; and a second inner link plate including: a third inner link end portion including a link extending through the first inner link opening; a third inner link central axis and a third inner link opening; a fourth inner link end portion including a fourth inner link having a fourth inner link central axis extending through the second inner link opening opening, the fourth inner link central axis is spaced apart from the third inner link central axis in a second inner link longitudinal direction; and A second inner link intermediate portion interconnecting the third inner link end portion and the fourth inner link end portion, the third inner link end portion, the fourth inner link end portion and the third inner link end portion. The two inner link intermediate portions define a second inner link outer peripheral edge, the second inner link outer peripheral edge including: a third inner link end edge extending around the third inner link end portion; a fourth inner link end portion; a link end edge extending around the fourth inner link end portion; and a pair of second inner link intermediate edges along the third inner link end edge and the fourth inner link end edge. The second inner chain intermediate portion extends so that, when viewed along an axial direction of the first inner chain central axis, the first inner chain end portion overlaps a tooth of a sprocket so as to separate the bicycle chain from the chain. An overlapping area is provided in a state of wheel engagement, and the overlapping area has a maximum circumferential length equal to or greater than 0.45 mm. 如請求項1之自行車鏈條，其中該最大圓周長度等於或小於3mm。 Such as the bicycle chain of claim 1, wherein the maximum circumferential length is equal to or less than 3mm. 如請求項1或2之自行車鏈條，其中該第一內鏈端部部分之該最大圓周長度等於該第二內鏈端部部分之該最大圓周長度。 The bicycle chain of claim 1 or 2, wherein the maximum circumferential length of the first inner link end portion is equal to the maximum circumferential length of the second inner link end portion. 如請求項1之自行車鏈條，其中該第一內鏈板包含一第一內表面，其面向該第二內鏈板，及 一第一外表面，其在該軸向方向上設置於該第一內表面之一反面上，且一第一軸向厚度界定為相對於該第一內鏈端部部分自該第一外表面至該第一內表面，該第一軸向厚度等於或小於0.9mm。 The bicycle chain of claim 1, wherein the first inner link plate includes a first inner surface facing the second inner link plate, and a first outer surface disposed on an opposite surface of the first inner surface in the axial direction, and a first axial thickness defined relative to the first inner link end portion from the first outer surface To the first inner surface, the first axial thickness is equal to or less than 0.9 mm. 如請求項4之自行車鏈條，其中該第一軸向厚度等於或小於0.79mm。 Such as the bicycle chain of claim 4, wherein the first axial thickness is equal to or less than 0.79mm. 如請求項1之自行車鏈條，其中一第一最大距離界定為在該第一內鏈縱向方向上自該第一內鏈中心軸線至該第一內鏈端部邊緣，一第二最大距離界定為在該第一內鏈縱向方向上自該第二內鏈中心軸線至該第二內鏈端部邊緣，一第三最大距離界定為在該第二內鏈縱向方向上自該第三內鏈中心軸線至該第三內鏈端部邊緣，一第四最大距離界定為在該第二內鏈縱向方向上自該第四內鏈中心軸線至該第四內鏈端部邊緣，該第一最大距離大於該第三最大距離，及該第三最大距離小於該第四最大距離，其中在該自行車鏈條安裝至一自行車車架之一狀態中，該第一內鏈板設置於該自行車車架與該第二內鏈板之間。 For example, the bicycle chain of claim 1, wherein a first maximum distance is defined as from the central axis of the first inner link to the end edge of the first inner link in the longitudinal direction of the first inner link, and a second maximum distance is defined as From the center axis of the second inner link in the longitudinal direction of the first inner link to the end edge of the second inner link, a third maximum distance is defined as from the center of the third inner link in the longitudinal direction of the second inner link axis to the third inner link end edge, a fourth maximum distance is defined as the first maximum distance from the fourth inner link center axis to the fourth inner link end edge in the longitudinal direction of the second inner link is greater than the third maximum distance, and the third maximum distance is less than the fourth maximum distance, wherein in a state where the bicycle chain is installed on a bicycle frame, the first inner chain plate is disposed between the bicycle frame and the bicycle frame. between the second inner chain plates. 如請求項1之自行車鏈條，其進一步包括 一第一鏈條滾子，其包含一第一徑向外圓周表面及設置於該第一徑向外圓周表面之徑向內之一第一徑向內圓周表面，其中該第一內鏈板包含一第一內表面，其面向該第二內鏈板，及一第一外表面，其在該軸向方向上設置於該第一內表面之一反面上，該第一內鏈端部部分包含一第一管狀部分，其在該軸向方向上自該第一內表面延伸以支撐該第一鏈條滾子，當沿該第一內鏈中心軸線觀看時，該第一管狀部分包圍該第一內鏈開口，該第一內鏈端部邊緣具有圍繞該第一內鏈中心軸線延伸之一第一倒角，當該第一鏈條滾子在該第一內鏈縱向方向上朝向該第一內鏈端部部分移動直至該第一鏈條滾子之該第一徑向內圓周表面接觸該第一管狀部分時，一第一延伸距離在該第一內鏈縱向方向上界定於該第一倒角之一邊緣與該第一鏈條滾子之該第一徑向外圓周表面之一部分之間，且該第一延伸距離在自0.95mm至1.1mm之範圍內。 Such as the bicycle chain of claim 1, which further includes A first chain roller, which includes a first radially outer circumferential surface and a first radially inner circumferential surface disposed radially inward of the first radial outer circumferential surface, wherein the first inner link plate includes a first inner surface facing the second inner link plate, and a first outer surface disposed on an opposite surface of the first inner surface in the axial direction, the first inner link end portion including a first tubular portion extending from the first inner surface in the axial direction to support the first chain roller, the first tubular portion surrounding the first chain roller when viewed along the first inner chain center axis Inner chain opening, the first inner chain end edge has a first chamfer extending around the first inner chain central axis, when the first chain roller faces the first inner chain in the longitudinal direction When the chain end portion moves until the first radially inner circumferential surface of the first chain roller contacts the first tubular portion, a first extension distance is defined in the first inner chain longitudinal direction at the first chamfer between an edge and a portion of the first radial outer circumferential surface of the first chain roller, and the first extension distance is in the range from 0.95mm to 1.1mm. 如請求項1之自行車鏈條，其進一步包括一第一倒角具有在相對於該第一內鏈中心軸線之一徑向方向上界定之一第一徑向寬度，其中當沿該軸向方向觀看時，該第一徑向寬度自該對第一內鏈中間邊緣之一者朝向一第一內鏈縱向中心線增大。 The bicycle chain of claim 1, further comprising a first chamfer having a first radial width defined in a radial direction relative to the first inner chain center axis, wherein when viewed along the axial direction When , the first radial width increases from one of the pair of first inner link intermediate edges toward a first inner link longitudinal centerline. 如請求項1、7、8任一項之自行車鏈條，其中 該第一內鏈端部部分具有一第一最小徑向距離及一第一最大徑向距離，該第一最小徑向距離界定為在垂直於該第一內鏈縱向方向及該第一內鏈中心軸線之一第一垂直方向上自該第一內鏈中心軸線至該第一內鏈端部邊緣，該第一最大徑向距離界定為在該第一內鏈縱向方向上自該第一內鏈中心軸線至該第一內鏈端部邊緣，且該第一最大徑向距離大於該第一最小徑向距離。 For example, the bicycle chain of any one of claim items 1, 7, and 8, wherein The first inner link end portion has a first minimum radial distance and a first maximum radial distance, the first minimum radial distance is defined as a distance perpendicular to the longitudinal direction of the first inner link and the first inner link The first maximum radial distance is defined as the first maximum radial distance from the first inner link central axis to the first inner link end edge in the first vertical direction of the first inner link. The chain center axis is to the first inner chain end edge, and the first maximum radial distance is greater than the first minimum radial distance. 如請求項9之自行車鏈條，其中該第一最小徑向距離等於或大於4.36mm。 For example, the bicycle chain of claim 9, wherein the first minimum radial distance is equal to or greater than 4.36mm. 一種自行車鏈條，其包括：一第一內鏈板，其包括：一第一內鏈端部部分，其包含具有一第一內鏈中心軸線之一第一內鏈開口；一第二內鏈端部部分，其包含具有沿該第一內鏈中心軸線延伸之一第二內鏈中心軸線之一第二內鏈開口，該第二內鏈中心軸線在一第一內鏈縱向方向上與該第一內鏈中心軸線間隔開；及一第一內鏈中間部分，其使該第一內鏈端部部分及該第二內鏈端部部分互連，該第一內鏈端部部分、該第二內鏈端部部分及該第一內鏈中間部分界定一第一內鏈外周邊邊緣，該第一內鏈外周邊邊緣包括： 一第一內鏈端部邊緣，其圍繞該第一內鏈端部部分延伸；一第二內鏈端部邊緣，其圍繞該第二內鏈端部部分延伸；及一對第一內鏈中間邊緣，其沿該第一內鏈端部邊緣與該第二內鏈端部邊緣之間的該第一內鏈中間部分延伸；及一第二內鏈板，其包括：一第三內鏈端部部分，其包含具有延伸穿過該第一內鏈開口之一第三內鏈中心軸線之一第三內鏈開口；一第四內鏈端部部分，其包含具有延伸穿過該第二內鏈開口之一第四內鏈中心軸線之一第四內鏈開口，該第四內鏈中心軸線在一第二內鏈縱向方向上與該第三內鏈中心軸線間隔開；及一第二內鏈中間部分，其使該第三內鏈端部部分及該第四內鏈端部部分互連，該第三內鏈端部部分、該第四內鏈端部部分及該第二內鏈中間部分界定一第二內鏈外周邊邊緣，該第二內鏈外周邊邊緣包括：一第三內鏈端部邊緣，其圍繞該第三內鏈端部部分延伸；一第四內鏈端部邊緣，其圍繞該第四內鏈端部部分延伸；及一對第二內鏈中間邊緣，其沿該第三內鏈端部邊緣與該第四內鏈端部邊緣之間的該第二內鏈中間部分延伸，當沿該第一內鏈中心軸線之一軸向方向觀看時，該第一內鏈端部部分與一鏈輪之一齒重疊，以在該自行車鏈條與該鏈輪嚙合之一狀態中提供一重疊區域，且該重疊區域具有等於或大於0.45mm之一最大圓周長度，其中一第一最大距離界定為在該第一內鏈縱向方向上自該第一內鏈中心 軸線至該第一內鏈端部邊緣，一第二最大距離界定為在該第一內鏈縱向方向上自該第二內鏈中心軸線至該第二內鏈端部邊緣，一第三最大距離界定為在該第二內鏈縱向方向上自該第三內鏈中心軸線至該第三內鏈端部邊緣，一第四最大距離界定為在該第二內鏈縱向方向上自該第四內鏈中心軸線至該第四內鏈端部邊緣，該第一最大距離大於該第三最大距離，及該第三最大距離小於該第四最大距離。 A bicycle chain includes: a first inner link plate, which includes: a first inner link end portion including a first inner link opening having a first inner link center axis; a second inner link end a second inner link opening having a second inner link central axis extending along the first inner link central axis, the second inner link central axis being in contact with the first inner link longitudinal direction an inner link central axis spaced apart; and a first inner link intermediate portion interconnecting the first inner link end portion and the second inner link end portion, the first inner link end portion, the third inner link end portion The two inner link end portions and the first inner link middle portion define a first inner link outer peripheral edge, the first inner link outer peripheral edge includes: a first inner link end edge extending around the first inner link end portion; a second inner link end edge extending around the second inner link end portion; and a pair of first inner link intermediate an edge extending along the middle portion of the first inner link between the first inner link end edge and the second inner link end edge; and a second inner link plate including: a third inner link end a third inner link opening having a third inner link central axis extending through the first inner link opening; a fourth inner link end portion including a third inner link end portion extending through the second inner link opening; a fourth inner link central axis of the chain opening, the fourth inner link central axis being spaced apart from the third inner link central axis in a second inner link longitudinal direction; and a second inner link central axis A link intermediate portion interconnecting the third inner link end portion and the fourth inner link end portion, the third inner link end portion, the fourth inner link end portion and the second inner link intermediate portion partially defining a second inner link outer peripheral edge including: a third inner link end edge extending partially around the third inner link end edge; a fourth inner link end edge , which extends around the fourth inner link end portion; and a pair of second inner link intermediate edges along the second inner link between the third inner link end edge and the fourth inner link end edge. The middle portion extends so that, when viewed along an axial direction of the central axis of the first inner chain, the end portion of the first inner chain overlaps a tooth of a sprocket so that when the bicycle chain is in mesh with the sprocket, An overlapping area is provided in the state, and the overlapping area has a maximum circumferential length equal to or greater than 0.45mm, wherein a first maximum distance is defined as from the center of the first inner link in the longitudinal direction of the first inner link axis to the first inner link end edge, a second maximum distance is defined as a third maximum distance from the second inner link center axis to the second inner link end edge in the longitudinal direction of the first inner link is defined as from the center axis of the third inner link to the end edge of the third inner link in the longitudinal direction of the second inner link, and a fourth maximum distance is defined as from the fourth inner link in the longitudinal direction of the second inner link. The first maximum distance from the chain center axis to the fourth inner chain end edge is greater than the third maximum distance, and the third maximum distance is less than the fourth maximum distance.
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US15/672,229 2017-08-08
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US15/719,576 US10618598B2 (en) 2017-09-29 2017-09-29 Bicycle chain
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