TW202100402A - Bicycle driving system and bicycle front sprocket assembly can suppress chain from coming off and have excellent driving efficiency - Google Patents
Bicycle driving system and bicycle front sprocket assembly can suppress chain from coming off and have excellent driving efficiency Download PDFInfo
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- TW202100402A TW202100402A TW109121057A TW109121057A TW202100402A TW 202100402 A TW202100402 A TW 202100402A TW 109121057 A TW109121057 A TW 109121057A TW 109121057 A TW109121057 A TW 109121057A TW 202100402 A TW202100402 A TW 202100402A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
- B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
- B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
- B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
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- 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
- B62M1/00—Rider propulsion of wheeled vehicles
- B62M1/36—Rider propulsion of wheeled vehicles with rotary cranks, e.g. with pedal cranks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M3/00—Construction of cranks operated by hand or foot
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
- B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
- B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
- B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
- B62M9/16—Tensioning or adjusting equipment for chains, belts or the like
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
Abstract
Description
本發明是關於自行車用驅動系統、及自行車用前鏈輪組裝體。The present invention relates to a bicycle drive system and a bicycle front sprocket assembly.
在專利文獻1揭示有自行車用驅動系統。自行車用驅動系統具備有:曲柄、鏈輪、滑動機構。滑動機構,將曲柄與鏈輪連結成可朝鏈輪的旋轉中心軸心的軸方向滑動。 [先前技術文獻] [專利文獻]Patent Document 1 discloses a bicycle drive system. The bicycle drive system has: a crank, a sprocket, and a sliding mechanism. The sliding mechanism connects the crank and the sprocket so as to be slidable in the axial direction of the rotation center axis of the sprocket. [Prior Technical Literature] [Patent Literature]
[專利文獻1]日本特開2016-196236號公報[Patent Document 1] JP 2016-196236 A
[發明欲解決的問題][The problem to be solved by the invention]
提出能在廣泛範圍順暢變更變速比的自行車用驅動系統及自行車用前鏈輪組裝體。 [用以解決問題之技術手段]Propose a bicycle drive system and a bicycle front sprocket assembly that can smoothly change the gear ratio in a wide range. [Technical means to solve the problem]
本發明的第1型態的驅動系統,具備有:曲柄組裝體、與包含複數的後鏈輪的複式後鏈輪組裝體;上述曲柄組裝體包含:前鏈輪、曲柄臂、及讓上述前鏈輪的鏈輪齒至少在上述前鏈輪的旋轉中心軸心的軸方向可相對於上述曲柄臂移位的鏈輪齒移位機構;上述複數的後鏈輪包含:最小後鏈輪、最大後鏈輪、及在上述軸方向配置在上述最小後鏈輪與上述最大後鏈輪之間的至少12個中間後鏈輪;上述複數的後鏈輪分別相對於上述旋轉中心軸心具有軸方向外面部及軸方向內面部;在上述軸方向上述最小後鏈輪的上述軸方向外面部與上述最大後鏈輪的上述軸方向內面部之間的長度定義為軸方向長度,上述軸方向長度為47.5mm以上。The drive system of the first aspect of the present invention includes a crank assembly, and a multiple rear sprocket assembly including a plurality of rear sprockets; the crank assembly includes a front sprocket, a crank arm, and the front The sprocket teeth of the sprocket can be displaced relative to the crank arm at least in the axial direction of the rotation center axis of the front sprocket; the plural rear sprocket includes: the smallest rear sprocket, the largest Rear sprockets, and at least 12 intermediate rear sprockets arranged in the axial direction between the smallest rear sprockets and the largest rear sprockets; the plurality of rear sprockets each have an axial direction with respect to the rotation center axis Outer face and axial inner face; the length between the outer face of the smallest rear sprocket in the axial direction and the inner face of the largest rear sprocket in the axial direction is defined as the axial length, and the axial length is Above 47.5mm.
藉由第1型態的自行車用驅動系統,藉由鏈輪齒移位機構,可讓複數的複式後鏈輪組裝體多段化,可抑制鏈條脫落,且驅動效率優異。能在廣泛範圍順暢地變更變速比。With the first type of bicycle drive system, the sprocket gear shift mechanism allows multiple multiple rear sprocket assemblies to be multi-staged, prevents the chain from falling off, and has excellent drive efficiency. The gear ratio can be changed smoothly in a wide range.
依據上述第1型態的第2型態的驅動系統,上述軸方向長度為48mm以上。According to the drive system of the second type according to the first type, the axial length is 48 mm or more.
藉由第2型態的自行車用驅動系統,即使在複式後鏈輪組裝體具有廣泛範圍的齒輪比的情況,也能抑制鏈條脫落,有優異驅動效率。With the second type of bicycle drive system, even when the dual rear sprocket assembly has a wide range of gear ratios, the chain can be prevented from falling off and the drive efficiency is excellent.
依據上述第2型態的第3型態的驅動系統,上述軸方向長度為49mm以上。According to the drive system of the third type according to the second type, the axial length is 49 mm or more.
藉由第3型態的自行車用驅動系統,即使在複式後鏈輪組裝體具有廣泛範圍的齒輪比的情況,也能抑制鏈條脫落,有優異驅動效率。With the third type of bicycle drive system, even when the dual rear sprocket assembly has a wide range of gear ratios, the chain can be prevented from falling off and the drive efficiency is excellent.
依據上述第1至3型態的任一型態的第4型態的驅動系統,上述最大後鏈輪的全齒數相對於上述最小後鏈輪的全齒數的齒數比為3.4以上。According to the drive system of the fourth type according to any one of the first to third types, the gear ratio of the total number of teeth of the largest rear sprocket to the total number of teeth of the smallest rear sprocket is 3.4 or more.
藉由第4型態的自行車用驅動系統,即使在複式後鏈輪組裝體具有廣泛範圍的齒輪比的情況,也能抑制鏈條脫落,有優異驅動效率。With the fourth type of bicycle drive system, even when the dual rear sprocket assembly has a wide range of gear ratios, the chain can be prevented from falling off and the drive efficiency is excellent.
依據上述第1至4型態的任一型態的第5型態的驅動系統,鏈輪密度,定義為上述複數的後鏈輪的總數除以上述軸方向長度所得的值,上述鏈輪密度為0.28以上。According to the drive system of the fifth type of any one of the first to fourth types, the sprocket density is defined as the total number of the plurality of rear sprockets divided by the axial length. The sprocket density It is 0.28 or more.
藉由第5型態的自行車用驅動系統,即使在複式後鏈輪組裝體具有廣泛範圍的齒輪比的情況,也能抑制鏈條脫落,有優異驅動效率。With the fifth type of bicycle drive system, even when the dual rear sprocket assembly has a wide range of gear ratios, the chain can be prevented from falling off and the drive efficiency is excellent.
依據上述第1至5型態的任一型態的第6型態的驅動系統,上述最小後鏈輪的全齒數為12以下,上述最大後鏈輪的全齒數為42以上。According to the drive system of the sixth type of any one of the first to fifth types, the minimum rear sprocket has 12 or less total teeth, and the maximum rear sprocket has 42 or more total teeth.
藉由第6型態的自行車用驅動系統,即使在複式後鏈輪組裝體具有廣泛範圍的齒輪比的情況,也能抑制鏈條脫落,有優異驅動效率。With the sixth type of bicycle drive system, even when the dual rear sprocket assembly has a wide range of gear ratios, the chain can be prevented from falling off, and the drive efficiency is excellent.
依據上述第1至6型態的任一型態的第7型態的驅動系統,上述複數的後鏈輪的總數為14以上。According to the driving system of the seventh type according to any one of the first to sixth types, the total number of the plurality of rear sprockets is 14 or more.
藉由第7型態的自行車用驅動系統,即使在複式後鏈輪組裝體具有廣泛範圍的齒輪比的情況,也能抑制鏈條脫落,有優異驅動效率。With the seventh type of bicycle drive system, even when the dual rear sprocket assembly has a wide range of gear ratios, the chain can be prevented from falling off and the drive efficiency is excellent.
依據上述第1至7型態的任一型態的第8型態的驅動系統,上述前鏈輪為單一前鏈輪。According to the driving system of the eighth form of any one of the first to seventh forms, the front sprocket is a single front sprocket.
藉由第8型態的自行車用驅動系統,可從自行車用驅動系統省略前撥鏈器。因此可讓自行車用驅動系統輕量化,且搭乘者可專心於後變速操作。With the eighth type of bicycle drive system, the front derailleur can be omitted from the bicycle drive system. Therefore, the weight of the bicycle drive system can be reduced, and the rider can concentrate on the rear shift operation.
依據上述第1至8型態的任一型態的第9型態的驅動系統,上述鏈輪齒移位機構所造成的前鏈輪相對於上述曲柄臂的總軸方向移位寬度為從5mm起至30mm的範圍。According to the drive system of the ninth type of any one of the above-mentioned 1 to 8 types, the displacement width of the front sprocket with respect to the overall axis of the crank arm caused by the sprocket gear shifting mechanism is from 5 mm From the range of 30mm.
藉由第9型態的自行車用驅動系統,在自行車用驅動系統安裝於各種框架的狀態,可有效減少前鏈輪與後鏈輪之間自行車鏈條相對於自行車的中心面的傾斜角度。With the ninth type of bicycle drive system, when the bicycle drive system is installed in various frames, the inclination angle of the bicycle chain between the front sprocket and the rear sprocket relative to the center plane of the bicycle can be effectively reduced.
依據上述第1至9型態的任一型態的第10型態的驅動系統,在上述自行車用驅動系統安裝於自行車,且上述前鏈輪在上述鏈輪齒移位機構所造成的上述前鏈輪相對於上述曲柄臂的總軸方向移位寬度位於軸方向中心點的狀態,至少5個上述中間後鏈輪在上述軸方向配置於上述最大後鏈輪與上述前鏈輪的軸方向中心面之間。According to the drive system of the tenth form according to any one of the first to ninth forms, the drive system for the bicycle is mounted on the bicycle, and the front sprocket is in the front caused by the sprocket displacement mechanism. A state where the sprocket has a displacement width in the axial direction relative to the crank arm at the center point in the axial direction, and at least five of the intermediate rear sprockets are arranged in the axial center of the largest rear sprocket and the front sprocket in the axial direction Between the faces.
藉由第10型態的自行車用驅動系統,在自行車鏈條卡合於複式後鏈輪組裝體的最小後鏈輪的情況,可減少自行車鏈條相對於自行車的中心面的傾斜角度。With the 10th type bicycle drive system, when the bicycle chain is engaged with the smallest rear sprocket of the compound rear sprocket assembly, the inclination angle of the bicycle chain relative to the center plane of the bicycle can be reduced.
本發明的第11型態的自行車用前鏈輪組裝體,具備有:前鏈輪、與鏈輪齒移位機構;上述前鏈輪包含:鏈輪主體、及配置於上述鏈輪主體的外周的複數的鏈輪齒;上述鏈輪主體包含:具有第1緊固軸心的第1連結部、具有第2緊固軸心的第2連結部、具有第3緊固軸心的第3連結部、及具有第4緊固軸心的第4連結部;上述鏈輪齒移位機構,包含:鏈輪載架、及基座構件;上述鏈輪載架,結合於上述前鏈輪;上述基座構件,結合於曲柄臂及曲柄軸的其中一方;上述鏈輪齒移位機構,在組裝於上述曲柄軸及上述曲柄臂的上述自行車用前鏈輪組裝體的組裝狀態,讓上述前鏈輪的複數的鏈輪齒在至少上述前鏈輪的旋轉中心軸心的軸方向可相對於上述曲柄臂及上述曲柄軸的上述其中一方移位;上述鏈輪載架可相對於上述基座構件移動,上述鏈輪載架包含:具有第5緊固軸心的第5連結部、具有第6緊固軸心的第6連結部、具有第7緊固軸心的第7連結部、及具有第8緊固軸心的第8連結部;上述第2連結部,在上述前鏈輪的旋轉中心軸心的周方向,與上述第1連結部相離且之間沒有其他連結部;上述第3連結部,在上述周方向,與上述第2連結部相離且之間沒有其他連結部;上述第4連結部,在上述周方向,分別與上述第1連結部及第3連結部相離且之間沒有其他連結部,且在上述組裝狀態讓上述曲柄臂位於上述周方向的上述第1連結部與上述第4連結部之間;上述第6連結部,在上述周方向,與上述第5連結部相離且之間沒有其他連結部;上述第7連結部,在上述周方向,與上述第6連結部相離且之間沒有其他連結部;上述第8連結部,在上述周方向,分別與上述第5連結部及第7連結部相離且之間沒有其他連結部,且在上述組裝狀態讓上述曲柄臂位於上述周方向的上述第5連結部與上述第8連結部之間;上述第1連結部的上述第1緊固軸心與上述第5連結部的上述第5緊固軸心,作成在第1共通軸心互相對齊讓第1緊固構件通過上述第1連結部及上述第5連結部的至少其中一個;上述第2連結部的上述第2緊固軸心與上述第6連結部的上述第6緊固軸心,作成在第2共通軸心互相對齊讓第2緊固構件通過上述第2連結部及上述第6連結部的至少其中一個;上述第3連結部的上述第3緊固軸心與上述第7連結部的上述第7緊固軸心,作成在第3共通軸心互相對齊讓第3緊固構件通過上述第3連結部及上述第7連結部的至少其中一個;上述第4連結部的上述第4緊固軸心與上述第8連結部的上述第8緊固軸心,作成在第4共通軸心互相對齊讓第4緊固構件通過上述第4連結部及上述第8連結部的至少其中一個;第1連結角度,用來讓其他共通軸心在上述周方向不位於上述第1共通軸心與上述第2共通軸心之間,而定義為在上述周方向從上述旋轉中心軸心朝向上述第1共通軸心延伸的第1參考線與從上述旋轉中心軸心朝向上述第2共通軸心延伸的第2參考線之間的角度;第2連結角度,用來讓其他共通軸心在上述周方向不位於上述第2共通軸心與上述第3共通軸心之間,而定義為在上述周方向上述第2參考線與從上述旋轉中心軸心朝向上述第3共通軸心延伸的第3參考線之間的角度;第3連結角度,用來讓其他共通軸心在上述周方向不位於上述第3共通軸心與上述第4共通軸心之間,而定義為在上述周方向上述第3參考線與從上述旋轉中心軸心朝向上述第4共通軸心延伸的第4參考線之間的角度;第4連結角度,用來讓其他共通軸心在上述周方向不位於上述第4共通軸心與上述第1共通軸心之間,而定義為在上述周方向上述第4參考線與上述第1參考線之間的角度;上述第1連結角度、上述第2連結角度、上述第3連結角度、及上述第4連結角度的至少其中一個,與上述第1連結角度、上述第2連結角度、上述第3連結角度、及上述第4連結角度的其中另一個不同。The eleventh aspect of the bicycle front sprocket assembly of the present invention includes: a front sprocket and a sprocket tooth displacement mechanism; the front sprocket includes: a sprocket body and an outer periphery of the sprocket body The plurality of sprocket teeth; the sprocket body includes: a first connection with a first fastening axis, a second connection with a second fastening axis, and a third connection with a third fastening axis Part, and a fourth connecting part having a fourth fastening axis; the sprocket tooth displacement mechanism includes: a sprocket carrier and a base member; the sprocket carrier is coupled to the front sprocket; The base member is coupled to one of the crank arm and the crank shaft; the sprocket tooth displacement mechanism is assembled to the crank shaft and the crank arm in the assembled state of the bicycle front sprocket assembly, so that the front chain The plurality of sprocket teeth of the wheel can be displaced relative to the one of the crank arm and the crank shaft in at least the axial direction of the rotation center axis of the front sprocket; the sprocket carrier can be relative to the base member To move, the sprocket carrier includes: a fifth connecting portion with a fifth fastening axis, a sixth connecting portion with a sixth fastening axis, a seventh connecting portion with a seventh fastening axis, and a The eighth connecting portion of the eighth fastening axis; the second connecting portion, in the circumferential direction of the rotation center axis of the front sprocket, is separated from the first connecting portion and there is no other connecting portion therebetween; 3 The connecting portion is separated from the second connecting portion in the above-mentioned circumferential direction and there is no other connecting portion in between; the fourth connecting portion is separated from the first connecting portion and the third connecting portion in the above-mentioned circumferential direction, respectively And there is no other connecting part in between, and in the assembled state, the crank arm is positioned between the first connecting part and the fourth connecting part in the circumferential direction; the sixth connecting part is in the circumferential direction, and the first 5 The connecting part is separated without other connecting parts; the above-mentioned seventh connecting part is separated from the above-mentioned sixth connecting part in the above-mentioned circumferential direction and there is no other connecting part between; the above-mentioned 8th connecting part is in the above-mentioned circumferential direction , Are separated from the fifth and seventh connecting portions and there is no other connecting portion between them, and in the assembled state, the crank arm is positioned between the fifth and eighth connecting portions in the circumferential direction ; The first fastening axis of the first connecting portion and the fifth fastening axis of the fifth connecting portion are made to be aligned with each other on the first common axis so that the first fastening member passes through the first connecting portion And at least one of the fifth connecting portion; the second fastening axis of the second connecting portion and the sixth fastening axis of the sixth connecting portion are made so that the second common axis is aligned with each other so that the first 2 The fastening member is made by at least one of the second connection portion and the sixth connection portion; the third fastening axis of the third connection portion and the seventh fastening axis of the seventh connection portion. Align the third common axis with each other so that the third fastening member passes through at least one of the third connecting portion and the seventh connecting portion; the fourth fastening axis of the fourth connecting portion and the eighth connecting portion The above-mentioned 8th fastening axis is made on the 4th common axis Align the fourth fastening member to pass through at least one of the fourth connecting portion and the eighth connecting portion; the first connecting angle is used to prevent the other common axis from being located between the first common axis and the above in the circumferential direction. The second common axis is defined as the first reference line extending from the rotation center axis toward the first common axis in the circumferential direction and the first reference line extending from the rotation center axis toward the second common axis The angle between the second reference line; the second connecting angle is used to make the other common axis not located between the second common axis and the third common axis in the above circumferential direction, but is defined as in the above circumferential direction The angle between the second reference line and the third reference line extending from the rotation center axis toward the third common axis; the third connection angle is used to prevent the other common axis from being located in the circumferential direction of the first 3 The common axis and the fourth common axis are defined as the angle between the third reference line in the circumferential direction and the fourth reference line extending from the rotation center axis toward the fourth common axis ; The fourth connection angle is used to make the other common axis not located between the fourth common axis and the first common axis in the circumferential direction, but is defined as the fourth reference line and the first in the circumferential direction 1 The angle between the reference lines; at least one of the first connection angle, the second connection angle, the third connection angle, and the fourth connection angle, and the first connection angle, the second connection angle, The other of the third connection angle and the fourth connection angle is different.
藉由第11型態的自行車用前鏈輪組裝體,能將踩踏時施加於曲柄的力有效率地傳遞到自行車鏈條,可提升驅動效率。With the 11th type of bicycle front sprocket assembly, the force applied to the crank during pedaling can be efficiently transmitted to the bicycle chain, which can improve driving efficiency.
依據本發明的第11型態的第12型態的自行車用前鏈輪組裝體,上述第1連結角度分別小於上述第2連結角度及上述第4連結角度。 藉由第12型態的自行車用前鏈輪組裝體,可提升驅動效率。According to the front sprocket assembly for a bicycle of the eleventh aspect and the twelfth aspect of the present invention, the first connection angle is smaller than the second connection angle and the fourth connection angle, respectively. The 12th type of bicycle front sprocket assembly can improve driving efficiency.
依據本發明的第11或12型態的第13型態的自行車用前鏈輪組裝體,上述第3連結角度分別小於上述第2連結角度及上述第4連結角度。 藉由第13型態的自行車用前鏈輪組裝體,可提升驅動效率。According to the eleventh or twelfth aspect of the thirteenth aspect of the bicycle front sprocket assembly of the present invention, the third connecting angle is smaller than the second connecting angle and the fourth connecting angle, respectively. The 13th type of bicycle front sprocket assembly can improve driving efficiency.
依據上述第11至13型態的任一型態的第14型態的自行車用前鏈輪組裝體,上述第1連結角度與上述第3連結角度相等。 藉由第14型態的自行車用前鏈輪組裝體,可提升驅動效率。According to the front sprocket assembly for a bicycle of the fourteenth form according to any one of the 11th to 13th forms, the first connection angle is equal to the third connection angle. The 14th type of bicycle front sprocket assembly can improve driving efficiency.
依據上述第11至14型態的任一型態的第15型態的自行車用前鏈輪組裝體,上述第2連結角度與上述第4連結角度不同。 藉由上述第15型態的自行車用前鏈輪組裝體,能使前鏈輪的剛性最適當化。According to the front sprocket assembly for a bicycle of the fifteenth form of any one of the 11th to 14th forms, the second connection angle is different from the fourth connection angle. The front sprocket assembly for bicycles of the 15th type described above can optimize the rigidity of the front sprocket.
依據本發明的第15型態的第16型態的自行車用前鏈輪組裝體,上述第2連結角度小於上述第4連結角度。 藉由上述第16型態的自行車用前鏈輪組裝體,能使前鏈輪的剛性最適當化。According to the 15th aspect of the 16th aspect of the bicycle front sprocket assembly of the present invention, the second connection angle is smaller than the fourth connection angle. With the front sprocket assembly for bicycles of the 16th type described above, the rigidity of the front sprocket can be optimized.
依據上述第11至16型態的任一型態的第17型態的自行車用前鏈輪組裝體,上述前鏈輪具有:第1軸方向面、及在上述軸方向與上述第1軸方向面為相反側的第2軸方向面;上述第2軸方向面,在上述自行車用前鏈輪組裝體安裝於上述自行車的狀態,與自行車的中心面相對向;上述第1至第4共通軸心,在上述軸方向從上述第1軸方向面朝向上述第2軸方向面觀察的情況,在上述周方向從上述曲柄臂朝逆時鐘方向以第1至第4共通軸心的順序配置。 藉由第17型態的自行車用前鏈輪組裝體,可提升驅動效率。According to a bicycle front sprocket assembly of a 17th aspect according to any one of the 11th to 16th aspects, the front sprocket has: a first axial direction surface, and a surface in the axial direction and the first axial direction The surface is the second axial direction surface on the opposite side; the second axial direction surface faces the center surface of the bicycle when the bicycle front sprocket assembly is mounted on the bicycle; the first to fourth common shafts When viewed from the first axial direction surface toward the second axial direction surface in the axial direction, the centers are arranged in the order of the first to fourth common axial centers in the counterclockwise direction from the crank arm in the circumferential direction. The 17th type bicycle front sprocket assembly can improve driving efficiency.
依據上述第11至17型態的任一型態的第18型態的自行車用前鏈輪組裝體,上述基座構件,藉由花鍵卡合方式可裝卸地連結於上述曲柄軸及上述曲柄臂的上述其中一方。 藉由上述第18型態的自行車用前鏈輪組裝體,能提升前鏈輪的維修性。According to the bicycle front sprocket assembly of the 18th form according to any of the 11th to 17th forms, the base member is detachably connected to the crankshaft and the crank by means of spline engagement One of the above-mentioned arms of the arm. With the bicycle front sprocket assembly of the 18th type, the maintainability of the front sprocket can be improved.
本發明的第19型態的自行車用前鏈輪組裝體,具備有:前鏈輪、與鏈輪齒移位機構;上述前鏈輪包含:鏈輪主體、及配置於上述鏈輪主體的外周的複數的鏈輪齒;上述鏈輪齒移位機構,包含:鏈輪載架、及基座構件;上述鏈輪載架,結合於上述前鏈輪;上述基座構件,結合於曲柄臂及曲柄軸的其中一方;上述鏈輪齒移位機構,在組裝於上述曲柄軸及上述曲柄臂的上述自行車用前鏈輪組裝體的組裝狀態,讓上述前鏈輪的複數的鏈輪齒在至少上述前鏈輪的旋轉中心軸心的軸方向可相對於上述曲柄臂及上述曲柄軸的上述其中一方移位;上述鏈輪載架可相對於上述基座構件移動;上述鏈輪齒移位機構,包含:具有第1滑動中心點的第1滑動部、具有第2滑動中心點的第2滑動部、具有第3滑動中心點的第3滑動部、及具有第4滑動中心點的第4滑動部;上述第2滑動部,在上述前鏈輪的旋轉中心軸心的周方向,與上述第1滑動部相離且之間沒有其他連結部;上述第3滑動部,在上述周方向與上述第2滑動部相離且之間沒有其他連結部; 上述第4滑動部,為了在上述組裝狀態讓上述曲柄臂位於上述周方向的上述第1滑動部與上述第4滑動部之間,在上述周方向,分別與上述第1滑動部及第3滑動部相離且之間沒有其他連結部;第1滑動角度,用來讓其他滑動中心點在上述周方向不位於上述第1滑動中心點與上述第2滑動中心點之間,而定義為在上述周方向從上述旋轉中心軸心朝向上述第1滑動中心點延伸的第1滑動參考線與從上述旋轉中心軸心朝向上述第2滑動中心點延伸的第2滑動參考線之間的角度;第2滑動角度,用來讓其他滑動中心點在上述周方向不位於上述第2滑動中心點與上述第3滑動中心點之間,而定義為在上述周方向上述第2滑動參考線與從上述旋轉中心軸心朝向上述第3滑動中心點延伸的第3滑動參考線之間的角度;第3滑動角度,用來讓其他滑動中心點在上述周方向不位於上述第3滑動中心點與上述第4滑動中心點之間,而定義為在上述周方向上述第3滑動參考線與從上述旋轉中心軸心朝向上述第4滑動中心點延伸的第4滑動參考線之間的角度;第4滑動角度,用來讓其他滑動中心點在上述周方向不位於上述第4滑動中心點與上述第1滑動中心點之間,而定義為在上述周方向上述第4滑動參考線與上述第1滑動參考線之間的角度;上述第1滑動角度、上述第2滑動角度、上述第3滑動角度、及上述第4滑動角度的至少其中一個,與上述第1滑動角度、上述第2滑動角度、上述第3滑動角度、及上述第4滑動角度的其中另一個不同。The front sprocket assembly for a bicycle of the 19th aspect of the present invention includes: a front sprocket and a sprocket tooth displacement mechanism; the front sprocket includes: a sprocket body, and an outer periphery of the sprocket body The plurality of sprocket teeth; the sprocket tooth displacement mechanism includes: a sprocket carrier and a base member; the sprocket carrier is coupled to the front sprocket; the base member is coupled to the crank arm and One side of the crank shaft; the sprocket tooth shift mechanism, in the assembled state of the bicycle front sprocket assembly assembled on the crank shaft and the crank arm, so that the plurality of sprocket teeth of the front sprocket are at least The axis direction of the rotation center axis of the front sprocket can be displaced relative to the one of the crank arm and the crank shaft; the sprocket carrier can be moved relative to the base member; the sprocket tooth displacement mechanism , Including: a first sliding part with a first sliding center point, a second sliding part with a second sliding center point, a third sliding part with a third sliding center point, and a fourth sliding part with a fourth sliding center point The second sliding portion, in the circumferential direction of the rotation center axis of the front sprocket, is separated from the first sliding portion and there is no other connecting portion therebetween; the third sliding portion is in the circumferential direction with the The second sliding part is separated and there is no other connecting part between; The fourth sliding portion, in order to position the crank arm between the first sliding portion and the fourth sliding portion in the circumferential direction in the assembled state, respectively slides with the first sliding portion and the third sliding portion in the circumferential direction The first sliding angle is used to make other sliding center points not between the first sliding center point and the second sliding center point in the above-mentioned circumferential direction, but is defined as The angle between the first sliding reference line extending from the rotation center axis toward the first sliding center point in the circumferential direction and the second sliding reference line extending from the rotation center axis toward the second sliding center point; The sliding angle is used to make other sliding center points not located between the second sliding center point and the third sliding center point in the circumferential direction, but is defined as the second sliding reference line in the circumferential direction and from the rotation center The axis is the angle between the third sliding reference line extending toward the third sliding center point; the third sliding angle is used to make other sliding center points not located in the above-mentioned circumferential direction between the third sliding center point and the fourth sliding The center points are defined as the angle between the third sliding reference line in the circumferential direction and the fourth sliding reference line extending from the rotation center axis toward the fourth sliding center point; the fourth sliding angle is used So that other sliding center points are not located between the fourth sliding center point and the first sliding center point in the circumferential direction, but are defined as between the fourth sliding reference line and the first sliding reference line in the circumferential direction At least one of the first sliding angle, the second sliding angle, the third sliding angle, and the fourth sliding angle, and the first sliding angle, the second sliding angle, and the third sliding angle , And the other of the above-mentioned fourth sliding angle.
藉由第19型態的自行車用前鏈輪組裝體,能提升鏈輪齒移位機構的剛性。With the front sprocket assembly for bicycles of the 19th type, the rigidity of the sprocket gear shift mechanism can be improved.
依據本發明的第19型態的第20型態的自行車用前鏈輪組裝體,上述第1滑動角度分別小於上述第2滑動角度及上述第4滑動角度。According to the front sprocket assembly for a bicycle of the 19th aspect and the 20th aspect of the present invention, the first sliding angle is smaller than the second sliding angle and the fourth sliding angle, respectively.
藉由第20型態的自行車用前鏈輪組裝體,能提升鏈輪齒移位機構的剛性。With the front sprocket assembly for bicycles of the 20th type, the rigidity of the sprocket gear shift mechanism can be improved.
依據本發明的第19或20型態的第21型態的自行車用前鏈輪組裝體,上述第3滑動角度分別小於上述第2滑動角度及上述第4滑動角度。 藉由第21型態的自行車用前鏈輪組裝體,能提升鏈輪齒移位機構的剛性。According to the 19th or 20th aspect of the 21st aspect of the bicycle front sprocket assembly of the present invention, the third sliding angle is smaller than the second sliding angle and the fourth sliding angle, respectively. The front sprocket assembly for bicycles of the 21st type can increase the rigidity of the sprocket gear shifting mechanism.
依據上述第19至21型態的任一型態的第22型態的自行車用前鏈輪組裝體,上述第1滑動角度與上述第3滑動角度相等。 藉由第22型態的自行車用前鏈輪組裝體,能提升鏈輪齒移位機構的剛性。According to the bicycle front sprocket assembly of the 22nd form according to any one of the 19th to 21st forms, the first sliding angle is equal to the third sliding angle. With the 22nd type bicycle front sprocket assembly, the rigidity of the sprocket gear shift mechanism can be improved.
依據上述第19至22型態的任一型態的第23型態的自行車用前鏈輪組裝體,上述第2滑動角度與上述第4滑動角度不同。 藉由第23型態的自行車用前鏈輪組裝體,能提升鏈輪齒移位機構的剛性。According to the bicycle front sprocket assembly of the 23rd type of any one of the 19th to 22nd types, the second sliding angle is different from the fourth sliding angle. With the 23rd type of bicycle front sprocket assembly, the rigidity of the sprocket gear shift mechanism can be improved.
依據上述第19至23型態的任一型態的第24型態的自行車用前鏈輪組裝體,上述第2滑動角度小於上述第4滑動角度。 藉由第24型態的自行車用前鏈輪組裝體,能提升鏈輪齒移位機構的剛性。According to the bicycle front sprocket assembly of the 24th form according to any of the 19th to 23rd forms, the second sliding angle is smaller than the fourth sliding angle. The 24th type of bicycle front sprocket assembly can increase the rigidity of the sprocket gear shift mechanism.
依據上述第19至24型態的任一型態的第25型態的自行車用前鏈輪組裝體,上述前鏈輪具有:第1軸方向面、及在上述軸方向與上述第1軸方向面為相反側的第2軸方向面;上述第2軸方向面,在上述自行車用前鏈輪組裝體安裝於上述自行車的狀態,與自行車的中心面相對向;上述第1至第4滑動中心點,在上述軸方向從上述第1軸方向面朝向上述第2軸方向面觀察的情況,在上述周方向從上述曲柄臂朝逆時鐘方向以第1至第4滑動中心點的順序配置。 藉由第25型態的自行車用前鏈輪組裝體,能提升鏈輪齒移位機構的剛性。According to a bicycle front sprocket assembly of a 25th form according to any of the 19th to 24th forms, the front sprocket has: a first axial direction surface, and a direction between the axial direction and the first axial direction The surface is the second axial direction surface on the opposite side; the second axial direction surface, when the bicycle front sprocket assembly is mounted on the bicycle, opposes the center surface of the bicycle; the first to fourth sliding centers When the points are viewed from the first axial direction surface toward the second axial direction surface in the axial direction, the first to fourth sliding center points are arranged in the order from the crank arm in the counterclockwise direction in the circumferential direction. The 25th type of bicycle front sprocket assembly can increase the rigidity of the sprocket gear shift mechanism.
依據上述第19至25型態的任一型態的第26型態的自行車用前鏈輪組裝體,上述基座構件,藉由花鍵卡合方式可裝卸地連結於上述曲柄軸及上述曲柄臂的上述其中一方。 藉由上述第26型態的自行車用前鏈輪組裝體,能提升前鏈輪的維修性。According to the bicycle front sprocket assembly of the 26th form according to any of the 19th to 25th forms, the base member is detachably connected to the crankshaft and the crank by spline engagement One of the above-mentioned arms of the arm. The front sprocket assembly for bicycles of the 26th type can improve the maintainability of the front sprocket.
本發明的第27型態的自行車用前鏈輪組裝體,具備有:前鏈輪、與鏈輪齒移位機構;上述前鏈輪包含:鏈輪主體、及配置於上述鏈輪主體的外周的複數的鏈輪齒;上述鏈輪主體包含至少一個連結部;上述鏈輪齒移位機構,包含:鏈輪載架、及基座構件;上述鏈輪載架,結合於上述前鏈輪;上述基座構件,結合於曲柄臂及曲柄軸的其中一方;上述鏈輪齒移位機構,在組裝於上述曲柄軸及上述曲柄臂的上述自行車用前鏈輪組裝體的組裝狀態,讓上述前鏈輪的複數的鏈輪齒在至少上述前鏈輪的旋轉中心軸心的軸方向可相對於上述曲柄臂及上述曲柄軸的上述其中一方移位;上述鏈輪載架可相對於上述基座構件移動;上述鏈輪載架包含至少一個附加連結部;上述至少一個連結部及上述至少一個附加連結部,藉由至少一個緊固構件互相結合;上述鏈輪齒移位機構,包含至少一個滑動部;上述至少一個緊固構件的總數與上述至少一個滑動部的總數相等。A bicycle front sprocket assembly according to a 27th aspect of the present invention includes a front sprocket and a sprocket tooth displacement mechanism; the front sprocket includes: a sprocket body and an outer periphery of the sprocket body The sprocket body includes at least one connecting portion; the sprocket tooth displacement mechanism includes: a sprocket carrier and a base member; the sprocket carrier is coupled to the front sprocket; The base member is coupled to one of the crank arm and the crank shaft; the sprocket tooth displacement mechanism is assembled to the crank shaft and the crank arm in the assembled state of the bicycle front sprocket assembly, so that the front The plurality of sprocket teeth of the sprocket can be displaced relative to the one of the crank arm and the crank shaft in at least the axial direction of the rotation center axis of the front sprocket; the sprocket carrier can be relative to the base The component moves; the sprocket carrier includes at least one additional connecting portion; the at least one connecting portion and the at least one additional connecting portion are combined with each other by at least one fastening member; the sprocket tooth displacement mechanism includes at least one sliding Section; The total number of the at least one fastening member is equal to the total number of the at least one sliding portion.
藉由第27型態的自行車用前鏈輪組裝體,由於鏈輪載架與鏈輪之間的滑動部的數量、與基座構件與鏈輪載架之間的滑動部的數量相等,所以能有效率地將驅動力從曲柄軸傳遞到鏈輪。With the 27th type of bicycle front sprocket assembly, the number of sliding parts between the sprocket carrier and the sprocket is equal to the number of sliding parts between the base member and the sprocket carrier, so It can efficiently transmit the driving force from the crankshaft to the sprocket.
依據本發明的第27型態的第28型態的自行車用前鏈輪組裝體,上述基座構件,藉由花鍵卡合方式可裝卸地連結於上述曲柄軸及上述曲柄臂的上述其中一方。 藉由上述第28型態的自行車用前鏈輪組裝體,能提升前鏈輪的維修性。According to the 27th aspect of the 28th aspect of the bicycle front sprocket assembly of the present invention, the base member is detachably connected to one of the crankshaft and the crank arm by spline engagement . The front sprocket assembly for bicycles of the 28th type described above can improve the maintainability of the front sprocket.
依據本發明的第27或28型態的第29型態的自行車用前鏈輪組裝體,上述至少一個連結部包括複數的連結部,上述至少一個附加連結部包括複數的連結部,上述至少一個緊固構件包括複數的緊固構件,上述至少一個滑動部包括複數的滑動部,上述複數的緊固構件的總數與上述複數的滑動部的總數相等。According to the 27th or 28th aspect of the 29th aspect of the bicycle front sprocket assembly of the present invention, the at least one connecting portion includes a plurality of connecting portions, the at least one additional connecting portion includes a plurality of connecting portions, and the at least one The fastening member includes a plurality of fastening members, the at least one sliding portion includes a plurality of sliding portions, and the total number of the plurality of fastening members is equal to the total number of the plurality of sliding portions.
藉由第29型態的自行車用前鏈輪組裝體,能將驅動力有效率地從曲柄軸傳遞到鏈輪。With the 29th type bicycle front sprocket assembly, the driving force can be efficiently transmitted from the crankshaft to the sprocket.
依據本發明的第27至29型態的任一型態的第30型態的自行車用前鏈輪組裝體,上述至少一個滑動部,在上述組裝狀態配置於至少一個緊固構件的附近。According to the bicycle front sprocket assembly of the 30th form of any one of the 27th to the 29th forms of the present invention, the at least one sliding portion is arranged in the vicinity of the at least one fastening member in the assembled state.
藉由第30型態的自行車用前鏈輪組裝體,能將驅動力有效率地從曲柄軸傳遞到鏈輪。With the 30-type bicycle front sprocket assembly, the driving force can be efficiently transmitted from the crankshaft to the sprocket.
依據本發明的第27至30型態的任一型態的第31型態的自行車用前鏈輪組裝體,上述至少一個滑動部,在上述組裝狀態相對於至少一個緊固構件配置於驅動旋轉方向的上游側。According to the front sprocket assembly for a bicycle of the 31st form of any one of the 27th to 30th forms of the present invention, the at least one sliding portion is arranged to drive rotation relative to the at least one fastening member in the assembled state The upstream side of the direction.
藉由第31型態的自行車用前鏈輪組裝體,能將驅動力有效率地從曲柄軸傳遞到鏈輪。With the 31st type of bicycle front sprocket assembly, the driving force can be efficiently transmitted from the crankshaft to the sprocket.
本發明的第32型態的自行車用前鏈輪組裝體,具備有:前鏈輪、鏈輪齒移位機構;上述前鏈輪,包含:鏈輪主體、及在前鏈輪的旋轉中心軸心的周方向配置於上述鏈輪主體的外周的複數的鏈輪齒;上述複數的鏈輪齒,具有:具有相對於上述旋轉中心軸心的第1最大鏈條卡合軸方向寬度的至少一個第1齒、及具有相對於上述旋轉中心軸心的第2最大鏈條卡合軸方向寬度的至少一個第2齒;在上述旋轉中心軸心的軸方向,上述第1最大鏈條卡合軸方向寬度大於上述第2最大鏈條卡合軸方向寬度;上述鏈輪齒移位機構,包含:鏈輪載架、及基座構件;上述鏈輪載架,結合於上述前鏈輪;上述基座構件,藉由溝卡合結合於曲柄臂及曲柄軸的其中一方;上述鏈輪齒移位機構,在組裝於上述曲柄軸及上述曲柄臂的上述自行車用前鏈輪組裝體的組裝狀態,讓上述前鏈輪的複數的鏈輪齒在至少上述前鏈輪的旋轉中心軸心的軸方向可相對於上述曲柄臂及上述曲柄軸的上述其中一方移位;上述鏈輪載架可相對於上述基座構件移動。The 32nd aspect of the bicycle front sprocket assembly of the present invention is provided with: a front sprocket, a sprocket tooth displacement mechanism; the front sprocket includes: a sprocket body, and a rotation center shaft of the front sprocket The plurality of sprocket teeth arranged on the outer circumference of the sprocket body in the circumferential direction of the center; the plurality of sprocket teeth have: at least one first having a first largest chain engagement axis width relative to the rotation center axis 1 tooth, and at least one second tooth having the second largest chain engagement axis width relative to the rotation center axis; in the axis direction of the rotation center axis, the first largest chain engagement axis width is greater than The second maximum chain engagement axis direction width; the sprocket tooth displacement mechanism includes: a sprocket carrier and a base member; the sprocket carrier is coupled to the front sprocket; the base member, by The sprocket gear shift mechanism is coupled to one of the crank arm and the crank shaft by groove engagement; in the assembled state of the bicycle front sprocket assembly assembled on the crank shaft and the crank arm, the front chain The plurality of sprocket teeth of the wheel can be displaced relative to the one of the crank arm and the crank shaft in at least the axial direction of the rotation center axis of the front sprocket; the sprocket carrier can be relative to the base member mobile.
藉由第32型態的自行車用前鏈輪組裝體,在包含鏈輪齒移位機構的組裝體,可提升驅動效率,且可提升前鏈輪的鏈條保持力。With the 32-type bicycle front sprocket assembly, the assembly including the sprocket tooth displacement mechanism can improve driving efficiency and increase the chain retention of the front sprocket.
依據本發明的第32型態的第33型態的自行車用前鏈輪組裝體,上述基座構件,藉由花鍵卡合方式可裝卸地連結於上述曲柄軸及上述曲柄臂的上述其中一方。According to the 32nd aspect of the 33rd aspect of the bicycle front sprocket assembly of the present invention, the base member is detachably connected to the one of the crankshaft and the crank arm by a spline engagement method .
藉由上述第33型態的自行車用前鏈輪組裝體,能提升前鏈輪的維修性。With the 33rd type of bicycle front sprocket assembly, the maintainability of the front sprocket can be improved.
依據本發明的第32或33型態的第34型態的自行車用前鏈輪組裝體,進一步具備有鎖定構件,上述鎖定構件,用來在上述組裝狀態抑制上述基座構件相對於上述曲柄臂及上述曲柄軸的上述其中一方的移位,而卡合於上述曲柄臂及上述曲柄軸的上述其中一方。The bicycle front sprocket assembly according to the 32nd or 33rd aspect of the 34th aspect of the present invention further includes a locking member for preventing the base member from being relative to the crank arm in the assembled state. And the said one of the said crank shaft is displaced and engages with the said one of the said crank arm and the said crank shaft.
藉由第34型態的自行車用前鏈輪組裝體,能容易裝卸前鏈輪。With the 34th type bicycle front sprocket assembly, the front sprocket can be easily detached.
依據本發明的第32至34型態的任一型態的第35型態的自行車用前鏈輪組裝體,上述第1最大鏈條卡合軸方向寬度,大於:藉由在上述軸方向自行車鏈條的一對內連桿片之間所定義的內連桿軸方向間隔,且小於:藉由在上述軸方向自行車鏈條的一對外連桿片之間所定義的外連桿軸方向間隔;上述第2最大鏈條卡合軸方向寬度小於上述內連桿軸方向間隔。According to the bicycle front sprocket assembly of the 35th form of any one of the 32nd to the 34th forms of the present invention, the first maximum chain engagement axial width is greater than: by the bicycle chain in the axial direction A pair of inner link pieces defined in the inner link axis direction interval, and is smaller than: by the above-mentioned axial direction bicycle chain defined between a pair of outer link pieces; 2 The maximum chain engagement axis width is smaller than the above-mentioned inner link axis interval.
藉由第35型態的自行車用前鏈輪組裝體,能提升前鏈輪的鏈條保持力。The 35-type bicycle front sprocket assembly can improve the chain retention of the front sprocket.
依據本發明的第32至35型態的任一型態的第36型態的自行車用前鏈輪組裝體,第1徑向長度,定義為在上述旋轉中心軸心的徑向上的上述至少一個第1齒的第1徑向最外齒端與上述旋轉中心軸心之間的長度;上述第2徑向長度,定義為相對於在上述旋轉中心軸心的徑向上的上述至少一個第2齒的第2徑向最外齒端與上述旋轉中心軸心之間的長度;上述第1徑向長度大於上述第2徑向長度。According to the 36th version of the bicycle front sprocket assembly of any one of the 32nd to 35th versions of the present invention, the first radial length is defined as the at least one of the above-mentioned at least one in the radial direction of the above-mentioned rotation center axis The length between the first radial outermost tooth end of the first tooth and the rotation center axis; the second radial length is defined as the at least one second tooth in the radial direction relative to the rotation center axis The length between the second radial outermost tooth end and the rotation center axis; the first radial length is greater than the second radial length.
藉由第36型態的自行車用前鏈輪組裝體,在前鏈輪的旋轉,具有第1徑向長度的第1齒的卡合時機較早於第2齒的卡合時機。藉此,讓自行車鏈條穩定卡合,能提升前鏈輪的自行車鏈條的保持力。According to the 36-type bicycle front sprocket assembly, the first tooth having the first radial length is engaged at an earlier time than the second tooth during the rotation of the front sprocket. In this way, the bicycle chain is stably engaged, and the holding force of the bicycle chain of the front sprocket can be improved.
依據本發明的第35型態的第37型態的自行車用前鏈輪組裝體,上述至少一個第1齒的上述第1最大鏈條卡合軸方向寬度,為上述外連桿軸方向間隔的75%以上。According to the 35th aspect of the 37th aspect of the bicycle front sprocket assembly of the present invention, the first maximum chain engagement axis width of the at least one first tooth is 75% of the outer link axis direction. %the above.
藉由第37型態的自行車用前鏈輪組裝體,能提升前鏈輪的鏈條保持力。The 37-type bicycle front sprocket assembly can improve the chain retention of the front sprocket.
依據本發明的第32至37型態的任一型態的第38型態的自行車用前鏈輪組裝體,上述至少一個第1齒,具有:在上述軸方向從上述至少一個第1齒的第1軸方向齒底中心面偏置的第1軸方向齒端中心線。According to the bicycle front sprocket assembly of any one of the 32nd to the 37th forms of the present invention, the at least one first tooth has: a distance from the at least one first tooth in the axial direction The first axis direction tooth end center line offset from the first axis direction tooth bottom center surface.
藉由第38型態的自行車用前鏈輪組裝體,相對於自行車的中心面,當自行車鏈條靠近第1齒的齒端偏置側時,可以提升自行車鏈條的保持力。With the 38th type bicycle front sprocket assembly, when the bicycle chain is close to the offset side of the tooth end of the first tooth relative to the center surface of the bicycle, the holding force of the bicycle chain can be improved.
依據本發明的第32至37型態的任一型態的第39型態的自行車用前鏈輪組裝體,上述至少一個第2齒,具有:在上述軸方向從上述至少一個第2齒的第2軸方向齒底中心面偏置的第2軸方向齒端中心線。According to the front sprocket assembly for a bicycle of the 39th form of any one of the 32nd to the 37th forms of the present invention, the at least one second tooth has: a distance from the at least one second tooth in the axial direction The second axis direction tooth end center line offset from the second axis direction tooth bottom center surface.
藉由第39型態的自行車用前鏈輪組裝體,相對於自行車的中心面,當自行車鏈條靠近第2齒的齒端偏置側時,可以提升自行車鏈條的保持力。With the 39-type bicycle front sprocket assembly, relative to the center surface of the bicycle, when the bicycle chain is close to the offset side of the second tooth, the holding force of the bicycle chain can be improved.
依據本發明的第32至39型態的任一型態的第40型態的自行車用前鏈輪組裝體,上述至少一個第1齒,在周方向相對於第1周方向齒底中心線為非對稱。 藉由第40型態的自行車用前鏈輪組裝體,能提升前鏈輪的鏈條保持力。According to the bicycle front sprocket assembly of the 40th version of any one of the 32nd to the 39th versions of the present invention, the at least one first tooth is in the circumferential direction relative to the tooth bottom center line in the first circumferential direction asymmetric. With the front sprocket assembly for bicycles of the 40th type, the chain retention force of the front sprocket can be improved.
依據本發明的第32至40型態的任一型態的第41型態的自行車用前鏈輪組裝體,上述至少一個第2齒,在周方向相對於第2周方向齒底中心線為非對稱。 藉由第41型態的自行車用前鏈輪組裝體,能提升前鏈輪的鏈條保持力。According to the front sprocket assembly for a bicycle of the 41st form of any one of the 32nd to the 40th forms of the present invention, the at least one second tooth is in the circumferential direction relative to the tooth bottom center line in the second circumferential direction asymmetric. With the 41st type of bicycle front sprocket assembly, the chain retention force of the front sprocket can be improved.
依據本發明的第32至41型態的任一型態的第42型態的自行車用前鏈輪組裝體,上述至少一個第1齒,在上述軸方向相對於第1軸方向齒底中心面為非對稱。 藉由第42型態的自行車用前鏈輪組裝體,能提升前鏈輪的鏈條保持力。According to the front sprocket assembly for a bicycle of any one of the 32nd to 41st forms of the present invention, the at least one first tooth is opposite to the tooth bottom center surface in the first axial direction in the axial direction It is asymmetric. The 42nd type bicycle front sprocket assembly can improve the chain retention of the front sprocket.
依據本發明的第32至42型態的任一型態的第43型態的自行車用前鏈輪組裝體,上述至少一個第2齒,在上述軸方向相對於第2軸方向齒底中心面為非對稱。 藉由第43型態的自行車用前鏈輪組裝體,能提升前鏈輪的鏈條保持力。According to the front sprocket assembly for a bicycle of any one of the 32nd to 42nd forms of the present invention, the at least one second tooth is opposite to the tooth bottom center surface in the second axial direction in the axial direction It is asymmetric. With the 43rd type of bicycle front sprocket assembly, the chain retention force of the front sprocket can be improved.
依據本發明的第32至43型態的任一型態的第44型態的自行車用前鏈輪組裝體,上述至少一個第1齒,包括複數的第1齒,上述至少一個第2齒,包括複數的第2齒,上述複數的第1齒及上述複數的第2齒,在周方向交互配置。 藉由第44型態的自行車用前鏈輪組裝體,能提升前鏈輪的鏈條保持力。 [發明效果]According to the bicycle front sprocket assembly of the 44th form of any one of the 32nd to the 43rd forms of the present invention, the at least one first tooth includes a plurality of first teeth, and the at least one second tooth, It includes plural second teeth, and the plural first teeth and the plural second teeth are alternately arranged in the circumferential direction. The 44-type bicycle front sprocket assembly can improve the chain retention of the front sprocket. [Invention Effect]
藉由本發明的自行車用驅動系統,藉由鏈輪齒移位機構,可讓複數的複式後鏈輪組裝體多段化,可抑制鏈條脫落,且驅動效率優異。能在廣泛範圍順暢地變更變速比。With the bicycle drive system of the present invention, the sprocket gear shifting mechanism can multi-stage multiple multiple rear sprocket assemblies, can prevent the chain from falling off, and has excellent drive efficiency. The gear ratio can be changed smoothly in a wide range.
<第1實施方式><First Embodiment>
參考第1圖針對自行車用驅動系統12加以說明。
第1圖是從上方觀察適用自行車用驅動系統12的人力驅動車的圖面,僅顯示自行車用驅動系統12。人力驅動車,代表關於用來行駛的動力,至少局部使用人力的車輛,包含以電動方式輔助人力的車輛。僅使用人力以外的動力的車輛,不包含於人力驅動車。僅以內燃機使用為動力的車輛,不包含於人力驅動車。通常的人力驅動車預定為小型輕型車輛,預定為在公路不需要駕駛執照的車輛。圖示的人力驅動車包括自行車A。自行車A包含登山車、及公路車。具體來說,人力驅動車為自行車A。自行車A包含:用來支承兩個車輪的框架1、可旋轉地支承於框架1的曲柄軸2、分別設置於曲柄軸2的兩端部的一對曲柄臂4、前鏈輪6、後鏈輪8、自行車鏈條10。自行車A包含自行車用驅動系統12。The driving
參考第1圖至第4圖來說明自行車用驅動系統12。
如第1圖所示,自行車用驅動系統12具備有:曲柄組裝體14、包含複數的後鏈輪8的複式後鏈輪組裝體16。The
曲柄組裝體14包含:前鏈輪6、曲柄臂4、及讓前鏈輪6的鏈輪齒18在至少前鏈輪6的旋轉中心軸心CA的軸方向DA可相對於曲柄臂4移位的鏈輪齒移位機構20。The
複數的後鏈輪8包含:最小後鏈輪22、最大後鏈輪24、及在軸方向DA配置在最小後鏈輪22與最大後鏈輪24之間的至少12個的中間後鏈輪26。The plural
曲柄組裝體14安裝於自行車A的框架1。複式後鏈輪組裝體16安裝於自行車A的後輪的輪轂。自行車鏈條10繞掛於前鏈輪6與複式後鏈輪組裝體16。The
在第2圖所示的本發明的鏈輪齒移位機構20的一個例子,藉由讓前鏈輪6朝前鏈輪6的旋轉中心軸心CA的軸方向DA移動,則鏈輪齒18與前鏈輪6的旋轉中心軸心CA的軸方向DA平行地移位。在第2圖以實線顯示了藉由鏈輪齒移位機構20讓前鏈輪6朝向自行車A的中心面CS側最接近時的前鏈輪6的第1位置P1。在第2圖以2點鏈線顯示了藉由鏈輪齒移位機構20讓前鏈輪6距離自行車A的中心面CS最外側時的前鏈輪6的第2位置P2。第1位置P1與第2位置P2之間的距離定義為前鏈輪6的總軸方向移位寬度RD。在軸方向DA第1位置P1與第2位置P2的中間點定義為軸方向中心點PCR。In an example of the sprocket
在第3圖所示的本發明的鏈輪齒移位機構20的其他例子,藉由讓前鏈輪6朝以沿著人力驅動車的上下方向的軸心CZ為中心的擺動方向DZ擺動,則鏈輪齒18朝前鏈輪6的旋轉中心軸心CA的軸方向DA移位。In another example of the sprocket
參考第4圖,針對複式後鏈輪組裝體16來說明。第4圖顯示複式後鏈輪組裝體16的示意圖,並且顯示複式後鏈輪組裝體16與前鏈輪6的軸方向DA的配置關係。With reference to Fig. 4, the description will be made regarding the compound
各個複數的後鏈輪8,相對於旋轉中心軸心CA具有軸方向外面部30及軸方向內面部32。在軸方向DA定義為最小後鏈輪22的軸方向外面部30與最大後鏈輪24的軸方向內面部32之間的長度的軸方向長度LA為47.5mm以上較佳。Each of the plural
軸方向長度LA為48mm以上較佳。並且軸方向長度LA為49mm以上較佳。The axial length LA is preferably 48 mm or more. In addition, the axial length LA is preferably 49 mm or more.
最大後鏈輪24的全齒數相對於最小後鏈輪22的全齒數的齒數比為3.4以上較佳。The gear ratio of the total number of teeth of the largest
鏈輪密度定義為複數的後鏈輪8的總數除以軸方向長度LA所得到的值。在本實施方式,鏈輪密度為0.28以上較佳。The sprocket density is defined as the value obtained by dividing the total number of plural
最小後鏈輪22的全齒數為12以下,最大後鏈輪24的全齒數的齒數比為42以上較佳。一個例子,最小後鏈輪22的全齒數為9個、10個、11個、12個的任一種。最大後鏈輪24的全齒數為42個、43個、44個、45個、46個、47個、48個、49個、50個、51個、52個的任一種。複數的後鏈輪8的總數為14以上較佳。The minimum
以下舉出兩個組合了前鏈輪6的全齒數、與複式後鏈輪組裝體16的各後鏈輪8的全齒數的例子。
第1例子如下。前鏈輪6的全齒數為58個。複式後鏈輪組裝體16的各後鏈輪8的全齒數分別為12個、13個、14個、15個、17個、19個、21個、23個、25個、28個、31個、34個、38個、42個。複式後鏈輪組裝體16的後鏈輪8的總數為14。齒數比為3.5。Two examples are given below in which the total number of teeth of the
第2例子如下。前鏈輪6的全齒數為43個。複式後鏈輪組裝體16的各後鏈輪8的全齒數分別為10個、11個、13個、15個、17個、19個、21個、23個、26個、29個、33個、37個、42個、47個。複式後鏈輪組裝體16的後鏈輪8的總數為14。齒數比為4.7。The second example is as follows. The total number of teeth of the
前鏈輪6為單一前鏈輪較佳。鏈輪齒移位機構20所造成的前鏈輪6相對於曲柄臂4的總軸方向移位寬度RD為5mm至30mm的範圍。總軸方向移位寬度RD為7mm至10mm較佳。The
如第1圖所示,在自行車用驅動系統12安裝於自行車A,且前鏈輪6在鏈輪齒移位機構20所造成的前鏈輪6相對於曲柄臂4的總軸方向移位寬度RD位於軸方向中心點PCR的狀態,至少5個中間後鏈輪26在軸方向DA配置於最大後鏈輪24與前鏈輪6的軸方向中心面PCS之間較佳。將至少6片中間後鏈輪26在軸方向DA配置在最大後鏈輪24與前鏈輪6的軸方向中心面PCS之間更佳。在第4圖所示的實施方式,是將6片中間後鏈輪26在軸方向DA配置在最大後鏈輪24與前鏈輪6的軸方向中心面PCS之間。As shown in Figure 1, the
在本實施方式的自行車用驅動系統12,適用後述的第2實施方式至第5實施方式之中的至少一種構造較佳。In the
說明鏈輪齒移位機構20的作用。
鏈輪載架42,在前鏈輪6的旋轉中心軸心CA的軸方向DA,可相對於曲柄臂4移位。在自行車A行駛中,當在複式後鏈輪組裝體16進行變速動作時,朝向旋轉中心軸心CA的軸方向DA的力量經由自行車鏈條10作用於前鏈輪6。則鏈輪載架42隨著自行車鏈條10朝與鏈條的移動方向相同的方向移動。藉此,自行車鏈條10相對於自行車A的中心面CS的傾斜度變小,可提升驅動效率,且抑制鏈條脫落。藉由這種作用,則可讓複式後鏈輪組裝體16的後鏈輪8的總數增加。The function of the sprocket
自行車用驅動系統12具備有:鏈輪齒移位機構20。並且複式後鏈輪組裝體16包含至少14個後鏈輪8。自行車用驅動系統12,藉由包含:鏈輪齒移位機構20、至少14個後鏈輪8,則能抑制鏈條脫落,且能在廣泛範圍順暢變更變速比。The
<第2實施方式>
針對包含鏈輪齒移位機構20的自行車用前鏈輪組裝體34加以說明。<Second Embodiment>
The bicycle
自行車用前鏈輪組裝體34具備有:前鏈輪6、鏈輪齒移位機構20。The bicycle
前鏈輪6包含:鏈輪主體36、與配置在鏈輪主體36的外周部的複數的鏈輪齒18。
前鏈輪6具有:第1軸方向面38、與在軸方向DA在第1軸方向面38的相反側的第2軸方向面40(參考第10圖)。第2軸方向面40,在自行車用前鏈輪組裝體34安裝於自行車A的狀態,與自行車A的中心面CS相對向。The
鏈輪齒移位機構20包含:結合於前鏈輪6的鏈輪載架42、與結合於曲柄臂4及曲柄軸2的其中一方的基座構件44。The sprocket
鏈輪齒移位機構20,在組裝於曲柄軸2及曲柄臂4的自行車用前鏈輪組裝體34的組裝狀態,讓前鏈輪6的複數的鏈輪齒18在至少前鏈輪6的旋轉中心軸心CA的軸方向DA可相對於曲柄臂4及曲柄軸2的上述其中一方移位,且鏈輪載架42可相對於基座構件44移動。The
參考第5圖至第12圖,來說明鏈輪齒移位機構20的一個例子。第5圖是包含鏈輪齒移位機構20與曲柄軸2與曲柄臂4與前鏈輪6的組裝體的立體圖。第6圖是組裝體的側視圖。第7圖是組裝體的分解立體圖。第8圖為鏈輪齒移位機構20的分解立體圖。第9圖是滑動部52及保持構件54的分解立體圖。第10圖是沿著第6圖的X-X線的剖面圖。第11圖是第10圖的局部放大圖。An example of the sprocket
基座構件44安裝於曲柄軸2及曲柄臂4的其中一方。基座構件44也可藉由花鍵卡合可裝卸地連結於曲柄軸2及曲柄臂4的其中一方。在該情況,鏈輪齒移位機構20進一步具備有鎖定構件46較佳。鎖定構件46,用來在組裝狀態抑制基座構件44相對於曲柄臂4及曲柄軸2的其中一方的移位,而卡合於曲柄臂4及曲柄軸2的其中一方。The
在本實施方式,基座構件44是藉由花鍵卡合而可裝卸地連結於曲柄臂4。
如第10圖及第11圖所示,曲柄臂4具有:供曲柄軸2插通的插通孔4a、及設置成包圍插通孔4a的其中一端的圓筒狀的突出部4b。在曲柄臂4的突出部4b,形成有在組裝狀態與沿著前鏈輪6的旋轉中心軸心CA的軸方向DA平行的花鍵4d。In this embodiment, the
如第11圖所示,基座構件44具有:包圍曲柄臂4的基端部4c的主體部48、及設置在主體部48而安裝於曲柄臂4的突出部4b的安裝部50。如第8圖所示,在基座構件44的主體部48設置有至少一個第1滑動面51。在基座構件44的安裝部50形成有用來卡合於曲柄臂4的花鍵4d的溝部。As shown in FIG. 11, the
如第10圖所示,基座構件44藉由鎖定構件46固定於曲柄臂4。鎖定構件46,用來在組裝狀態抑制基座構件44相對於曲柄臂4的移位,而卡合於曲柄臂4及曲柄軸2的其中一方。鎖定構件46也可藉由一個零件構成,也可藉由複數的零件構成。As shown in FIG. 10, the
在本實施方式,滑動部52包含:第1滑動面51、第2滑動面61、及滑動體53。
基座構件44的第1滑動面51用來支承滑動體53。在本實施方式,滑動體53例如是藉由鋼珠構成的滾動體。滑動體53也可是滾針狀的滾動體。
如第9圖所示,滑動體53藉由保持構件54所保持。基座構件44的第1滑動面51與滑動體53滑動,讓基座構件44相對於鏈輪載架42可朝前鏈輪6的旋轉中心軸心CA的軸方向DA移動。保持構件54具有:可旋轉地保持滑動體53的4個保持部56。保持部56具有:基座構件44的與第1滑動面51相對向的第1面部56a、及與設置在鏈輪載架42的第2滑動面61相對向的第2面部56b。在第1面部56a及第2面部56b設置有用來收容滑動體53的孔部56c。
滑動部52,也可是省略滑動體53,讓第1滑動面51與第2滑動面61直接滑動的滑動軸承的構造。In this embodiment, the sliding
如第5圖所示,前鏈輪6安裝於鏈輪載架42。鏈輪載架42具有:包圍基座構件44的主體部58、設置於主體部58而連結於前鏈輪6的連結部60。至少一個第2滑動面61設置於鏈輪載架42的主體部58。主體部58具有供曲柄軸2的端部插通的貫穿孔58a。第2滑動面61設置於主體部58的內周面58b。在主體部58設置有在軸方向DA從外面部朝向內面部的凹部58c。凹部58c用來配置曲柄臂4的局部。第2滑動面61與滑動體53滑動。第2滑動面61,相對於基座構件44,與滑動體53滑動且可朝前鏈輪6的旋轉中心軸心CA的軸方向DA移動。曲柄軸2的驅動力經由滑動體53傳遞到鏈輪載架42。As shown in FIG. 5, the
如第5圖及第6圖所示,在本實施方式,鏈輪載架42藉由緊固構件64緊固於前鏈輪6。在鏈輪載架42安裝有用來安裝防塵罩68的罩安裝構件66。在將罩安裝構件66安裝於防塵罩68的徑向外側之後,將緊固構件64緊固於連結部60、70時,藉由緊固構件64的頭部與鏈輪載架42夾住罩安裝構件66,將罩安裝構件66固定。As shown in FIGS. 5 and 6, in this embodiment, the
鏈輪載架42與前鏈輪6的連結也可做成如下構造。在鏈輪載架42及前鏈輪6的其中一方設置有用來與設置在另一方的凹部或貫穿孔卡合的凸部。藉由凸部的歛縫將鏈輪載架42與前鏈輪6連結。The connection between the
如第5圖及第6圖所示,鏈輪齒移位機構20進一步藉由防塵罩68覆蓋較佳。防塵罩68至少包含:第1罩部68a、第2罩部68b。第1罩部68a配置在:前鏈輪6的旋轉中心軸心CA的軸方向DA的前鏈輪6的第1軸方向面38側。第1罩部68a將鏈輪載架42與基座構件44之間的間隙及滑動部52覆蓋。第2罩部68b配置在:前鏈輪6的旋轉中心軸心CA的軸方向DA的前鏈輪6的第2軸方向面40側。第2罩部68b將鏈輪載架42與基座構件44之間的間隙及滑動部52覆蓋。As shown in FIGS. 5 and 6, the sprocket
參考第12圖至第14圖,針對前鏈輪6與鏈輪載架42的緊固構造加以說明。第12圖是前鏈輪6的側視圖。第13圖是鏈輪42的側視圖。第14圖為前鏈輪6與鏈輪載架42的組裝體的側視圖。With reference to Figures 12 to 14, the fastening structure of the
鏈輪主體36包含:具有第1緊固軸心AF1的第1連結部70A、具有第2緊固軸心AF2的第2連結部70B、具有第3緊固軸心AF3的第3連結部70C、及具有第4緊固軸心AF4的第4連結部70D。The sprocket
鏈輪主體42包含:具有第5緊固軸心AF5的第5連結部60E、具有第6緊固軸心AF6的第6連結部60F、具有第7緊固軸心AF7的第7連結部60G、及具有第8緊固軸心AF8的第8連結部60H。The sprocket
第2連結部70B,在前鏈輪6的旋轉中心軸心CA的周方向DC,與第1連結部70A相離且之間沒有其他連結部70C、70D。The second connecting
第3連結部70C,在周方向DC與第2連結部70B相離且之間沒有其他的連結部70A、70D。
第4連結部70D,在周方向DC分別與第1連結部70A及第3連結部70C相離且之間沒有其他的連結部70B,而在組裝狀態讓曲柄臂4在周方向DC位於第1連結部70A與第4連結部70D之間。The third connecting
第6連結部60F,在周方向DC與第5連結部60E相離且之間沒有其他的連結部60G、60H。
第7連結部60G,在周方向DC與第6連結部60F相離且之間沒有其他的連結部60E、60H。The sixth connecting
第8連結部60H,在周方向DC分別與第5連結部60E及第7連結部60G相離且之間沒有其他的連結部60F,而在組裝狀態讓曲柄臂4在周方向DC位於第5連結部60E與第8連結部60H之間。The eighth connecting
第1連結部70A的第1緊固軸心AF1與第5連結部60E的第5緊固軸心AF5,作成相對於第1共通軸心AC1互相對齊,讓第1緊固構件64A通過第1連結部70A及第5連結部60E的至少其中一個。The first fastening axis AF1 of the first connecting
第2連結部70B的第2緊固軸心AF2與第6連結部60F的第6緊固軸心AF6,作成相對於第2共通軸心AC2互相對齊,讓第2緊固構件64B通過第2連結部70B及第6連結部60F的至少其中一個。The second fastening axis AF2 of the second connecting
第3連結部70C的第3緊固軸心AF3與第7連結部60G的第7緊固軸心AF7,作成相對於第3共通軸心AC3互相對齊,讓第3緊固構件64C通過第3連結部70C及第7連結部60G的至少其中一個。The third fastening axis AF3 of the third connecting
第4連結部70D的第4緊固軸心AF4與第8連結部60H的第8緊固軸心AF8,作成相對於第4共通軸心AC4互相對齊,讓第4緊固構件64D通過第4連結部70D及第8連結部60H的至少其中一個。The fourth fastening axis AF4 of the fourth connecting
第1連結角度AG1,為了讓其他共通軸心AC3、AC4在周方向DC不位於第1共通軸心AC1與第2共通軸心AC2之間,定義為在周方向DC從旋轉中心軸心CA朝向第1共通軸心AC1延伸的第1參考線LR1與從旋轉中心軸心CA朝向第2共通軸心AC2延伸的第2參考線LR2之間的角度。The first connection angle AG1, in order to prevent the other common axis AC3, AC4 from being located between the first common axis AC1 and the second common axis AC2 in the circumferential direction DC, is defined as the circumferential direction DC from the rotation center axis CA The angle between the first reference line LR1 extending from the first common axis AC1 and the second reference line LR2 extending from the rotation center axis CA toward the second common axis AC2.
第2連結角度AG2,為了讓其他共通軸心AC1、AC4在周方向DC不位於第2共通軸心AC2與第3共通軸心AC3之間,定義為在周方向DC第2參考線LR2與從旋轉中心軸心CA朝向第3共通軸心AC3延伸的第3參考線LR3之間的角度。The second connection angle AG2, in order to prevent the other common axis AC1 and AC4 from being located between the second common axis AC2 and the third common axis AC3 in the circumferential direction DC, is defined as the second reference line LR2 in the circumferential direction DC and from The angle between the rotation center axis CA and the third reference line LR3 extending toward the third common axis AC3.
第3連結角度AG3,為了讓其他共通軸心AC1、AC2在周方向DC不位於第3共通軸心AC3與第4共通軸心AC4之間,定義為在周方向DC第3參考線LR3與從旋轉中心軸心CA朝向第4共通軸心AC4延伸的第4參考線LR4之間的角度。The third connection angle AG3, in order to prevent the other common axis AC1 and AC2 from being located between the third common axis AC3 and the fourth common axis AC4 in the circumferential direction DC, is defined as the third reference line LR3 in the circumferential direction DC and from The angle between the rotation center axis CA and the fourth reference line LR4 extending toward the fourth common axis AC4.
第4連結角度AG4,為了讓其他共通軸心AC2、AC3在周方向DC不位於第4共通軸心AC4與第1共通軸心AC1之間,定義為在周方向DC第4參考線LR4與第1參考線LR1之間的角度。The fourth connection angle AG4 is defined as the fourth reference line LR4 and the fourth reference line LR4 in the circumferential direction DC so that the other common axis AC2 and AC3 are not located between the fourth common axis AC4 and the first common axis AC1 in the circumferential direction DC 1 The angle between the reference line LR1.
第1連結角度AG1、第2連結角度AG2、第3連結角度AG3、及第4連結角度AG4的至少其中一個,與第1連結角度AG1、第2連結角度AG2、第3連結角度AG3、及第4連結角度AG4的其中另一個不同。At least one of the first connection angle AG1, the second connection angle AG2, the third connection angle AG3, and the fourth connection angle AG4 is connected to the first connection angle AG1, the second connection angle AG2, the third connection angle AG3, and the The other of the 4 connection angle AG4 is different.
第1連結角度AG1,分別小於第2連結角度AG2及第4連結角度AG4較佳。 第3連結角度AG3,分別小於第2連結角度AG2及第4連結角度AG4較佳。The first connection angle AG1 is preferably smaller than the second connection angle AG2 and the fourth connection angle AG4, respectively. The third connection angle AG3 is preferably smaller than the second connection angle AG2 and the fourth connection angle AG4, respectively.
第1連結角度AG1與第3連結角度AG3相等較佳。 第2連結角度AG2與第4連結角度AG4不同較佳。第2連結角度AG2小於第4連結角度AG4較佳。Preferably, the first connection angle AG1 and the third connection angle AG3 are equal. Preferably, the second connection angle AG2 and the fourth connection angle AG4 are different. Preferably, the second connection angle AG2 is smaller than the fourth connection angle AG4.
在軸方向DA從第1軸方向面38朝向第2軸方向面40(參考第10圖)觀察的情況,將第1共通軸心AC1至第4共通軸心AC4配置成在周方向DC從曲柄臂4起朝逆時鐘方向CCW以第1共通軸心AC1起至第4共通軸心AC4的順序較佳。When the axial direction DA is viewed from the first
第15圖為前鏈輪6與鏈輪載架42與基座構件44與曲柄臂4的組裝體的側視圖。如第13圖所示,在一個例子,前鏈輪6的第1連結部70A起至第4連結部70D,在前鏈輪6的旋轉中心軸心CA的徑向配置於滑動部52的外側。FIG. 15 is a side view of the assembly of the
參考第16圖,來說明本實施方式的鏈輪齒移位機構20的動作。
鏈輪載架42,在前鏈輪6的旋轉中心軸心CA的軸方向DA,可相對於安裝於曲柄臂4的基座構件44移位。在自行車A行駛中,當在複式後鏈輪組裝體16進行變速動作時,朝向旋轉中心軸心CA的軸方向DA的力量經由自行車鏈條10作用於前鏈輪6。則鏈輪載架42隨著自行車鏈條10朝與鏈條的移動方向相同的方向移動。With reference to Fig. 16, the operation of the sprocket
說明自行車用前鏈輪組裝體34的作用。
曲柄臂4及曲柄軸2的其中一方的驅動力,從基座構件44經由鏈輪載架42傳遞到前鏈輪6。鏈輪載架42以四個部位連結於前鏈輪6。如上述,第1連結角度AG1、第2連結角度AG2、第3連結角度AG3、及第4連結角度AG4的至少其中一個,與第1連結角度AG1、第2連結角度AG2、第3連結角度AG3、及第4連結角度AG4的其中另一個不同。在踩踏右曲柄臂4驅動的情況,讓自行車鏈條10的張力強力作用於位於用來定義第1連結角度AG1的第1參考線LR1與第2參考線LR2之間的鏈輪齒。藉由減少第1連結角度AG1,則可讓踩踏右曲柄臂4驅動時的自行車用前鏈輪組裝體34的剛性提升。在踩踏左曲柄臂4驅動的情況,讓自行車鏈條10的張力強力作用於位於用來定義第3連結角度AG3的第3參考線LR3與第4參考線LR4之間的鏈輪齒。藉由減少第3連結角度AG3,則可讓踩踏左曲柄臂4驅動時的自行車用前鏈輪組裝體34的剛性提升。所以藉由將第1連結角度AG1及第3連結角度AG3的至少其中一方,更好是將第1連結角度AG1及第3連結角度AG3雙方變小則可提升驅動效率。The function of the bicycle
<第3實施方式>
參考第15圖,針對包含鏈輪齒移位機構20的一個例子的自行車用前鏈輪組裝體34加以說明。針對與第2實施方式共通的構造加上與第2實施方式相同的符號,省略重複的說明。<The third embodiment>
With reference to Fig. 15, a bicycle
自行車用前鏈輪組裝體34具備有:前鏈輪6、鏈輪齒移位機構20。The bicycle
前鏈輪6包含:鏈輪主體36、與配置在鏈輪主體36的外周部的複數的鏈輪齒18。
前鏈輪6具有:第1軸方向面38、與在軸方向DA在第1軸方向面38的相反側的第2軸方向面40。第2軸方向面40,在自行車用前鏈輪組裝體34安裝於自行車A的狀態,與自行車A的中心面CS相對向。The
鏈輪齒移位機構20包含:結合於前鏈輪6的鏈輪載架42、與結合於曲柄臂4及曲柄軸2的其中一方的基座構件44。The sprocket
鏈輪齒移位機構20,在組裝於曲柄軸2及曲柄臂4的自行車用前鏈輪組裝體34的組裝狀態,讓前鏈輪6的複數的鏈輪齒18在至少前鏈輪6的旋轉中心軸心CA的軸方向DA可相對於曲柄臂4及曲柄軸2的上述其中一方移位,且鏈輪載架42可相對於基座構件44移動。The
鏈輪齒移位機構20的構造與第2實施方式的鏈輪齒移位機構20一致。前鏈輪6與基座構件44的緊固構造並未限定。前鏈輪6與基座構件44的緊固構造與第2實施方式舉例的緊固構造一致較佳。The structure of the
基座構件44安裝於曲柄軸2及曲柄臂4的其中一方。基座構件44也可藉由花鍵卡合可裝卸地連結於曲柄軸2及曲柄臂4的其中一方。The
鏈輪齒移位機構20包含:具有第1滑動中心點PS1的第1滑動部52A、具有第2滑動中心點PS2的第2滑動部52B、具有第3滑動中心點PS3的第3滑動部52C、及具有第4滑動中心點PS4的第4滑動部52D。The
第2滑動部52B,在前鏈輪6的旋轉中心軸心CA的周方向DC與第1滑動部52A相離且之間沒有其他滑動部52,第3滑動部52C,在周方向DC與第2滑動部52B相離且之間沒有其他滑動部52。The second sliding
第4連結部52D,在周方向DC分別與第1滑動部52A及第3滑動部52C相離且之間沒有其他的滑動部52,而在組裝狀態讓曲柄臂4在周方向DC位於第1滑動部52A與第4滑動部52D之間。The fourth connecting portion 52D is separated from the first sliding
第1滑動角度AGS1,為了讓其他滑動中心點PS3、PS4在周方向DC不位於第1滑動中心點PS1與第2滑動中心點PS2之間,定義為在周方向DC從旋轉中心軸心CA朝向第1滑動中心點PS1延伸的第1滑動參考線PRS1與從旋轉中心軸心CA朝向第2滑動中心點PS2延伸的第2滑動參考線PRS2之間的角度。The first sliding angle AGS1, in order to prevent the other sliding center points PS3 and PS4 from being located between the first sliding center point PS1 and the second sliding center point PS2 in the circumferential direction DC, is defined as the circumferential direction DC from the rotation center axis CA The angle between the first sliding reference line PRS1 extending from the first sliding center point PS1 and the second sliding reference line PRS2 extending from the rotation center axis CA toward the second sliding center point PS2.
第2滑動角度AGS2,為了讓其他滑動中心點PS1、PS4在周方向DC不位於第2滑動中心點PS2與第3滑動中心點PS3之間,定義為在周方向DC第2滑動參考線PRS2與從旋轉中心軸心CA朝向第3滑動中心點PS3延伸的第3滑動參考線PRS3之間的角度。The second sliding angle AGS2 is defined as the second sliding reference line PRS2 in the circumferential direction DC so that the other sliding center points PS1 and PS4 are not located between the second sliding center point PS2 and the third sliding center point PS3 in the circumferential direction DC The angle between the third sliding reference lines PRS3 extending from the rotation center axis CA toward the third sliding center point PS3.
第3滑動角度AGS3,為了讓其他滑動中心點PS1、PS2在周方向DC不位於第3滑動中心點PS3與第4滑動中心點PS4之間,定義為在周方向DC第3滑動參考線PRS3與從旋轉中心軸心CA朝向第4滑動中心點PS4延伸的第4滑動參考線PRS4之間的角度。The third sliding angle AGS3 is defined as the third sliding reference line PRS3 in the circumferential direction DC so that the other sliding center points PS1 and PS2 are not located between the third sliding center point PS3 and the fourth sliding center point PS4 in the circumferential direction DC The angle between the fourth sliding reference lines PRS4 extending from the rotation center axis CA toward the fourth sliding center point PS4.
第4滑動角度AGS4,為了讓其他滑動中心點PS2、PS3在周方向DC不位於第4滑動中心點PS4與第1滑動中心點PS1之間,定義為在周方向DC第4滑動參考線PRS4與第1滑動參考線PRS1之間的角度。The fourth sliding angle AGS4 is defined as the fourth sliding reference line PRS4 in the circumferential direction DC so that the other sliding center points PS2 and PS3 are not located between the fourth sliding center point PS4 and the first sliding center point PS1 in the circumferential direction DC The angle between the first sliding reference line PRS1.
第1滑動角度AGS1、第2滑動角度AGS2、第3滑動角度AGS3、及第4滑動角度AGS4的至少其中一個,與第1滑動角度AGS1、第2滑動角度AGS2、第3滑動角度AGS3、及第4滑動角度AGS4的其中另一個不同。At least one of the first sliding angle AGS1, the second sliding angle AGS2, the third sliding angle AGS3, and the fourth sliding angle AGS4 is related to the first sliding angle AGS1, the second sliding angle AGS2, the third sliding angle AGS3, and the 4 Sliding angle AGS4 is another difference.
第1滑動角度AGS1,分別小於第2滑動角度AGS2及第4滑動角度AGS4較佳。 第3滑動角度AGS3,分別小於第2滑動角度AGS2及第4滑動角度AGS4較佳。The first sliding angle AGS1 is preferably smaller than the second sliding angle AGS2 and the fourth sliding angle AGS4, respectively. The third sliding angle AGS3 is preferably smaller than the second sliding angle AGS2 and the fourth sliding angle AGS4, respectively.
第1滑動角度AGS1與第3滑動角度AGS3相等較佳。 第2滑動角度AGS2與第4滑動角度AGS4不同較佳。第2滑動角度AGS2小於第4滑動角度AGS4較佳。Preferably, the first sliding angle AGS1 and the third sliding angle AGS3 are equal. Preferably, the second sliding angle AGS2 and the fourth sliding angle AGS4 are different. Preferably, the second sliding angle AGS2 is smaller than the fourth sliding angle AGS4.
在軸方向DA從第1軸方向面38朝向第2軸方向面40觀察的情況,將第1滑動中心點PS1至第4滑動中心點PS4配置成在周方向DC從曲柄臂4起朝逆時鐘方向CCW以第1滑動中心點PS1起至第4滑動中心點PS4的順序較佳。When viewed from the first
本實施方式的鏈輪齒移位機構20的動作與第2實施方式的鏈輪齒移位機構20的動作一致。The operation of the sprocket
說明自行車用前鏈輪組裝體34的作用。
曲柄臂4及曲柄軸2的其中一方的驅動力,從基座構件44經由鏈輪載架42傳遞到前鏈輪6。基座構件44以四個部位滑動於鏈輪載架42。如上述,第1滑動角度AGS1、第2滑動角度AGS2、第3滑動角度AGS3、及第4滑動角度AGS4的至少其中一個,與第1滑動角度AGS1、第2滑動角度AGS2、第3滑動角度AGS3、及第4滑動角度AGS4的其中另一個不同。在踩踏右曲柄臂4驅動的情況,讓自行車鏈條10的張力強力作用於位於用來定義第1連結角度AG1的第1參考線LR1與第2參考線LR2之間的鏈輪齒。藉由減少第1滑動角度AGS1,則可讓踩踏右曲柄臂4驅動時的滑動部52的剛性提升。在踩踏左曲柄臂4驅動的情況,讓自行車鏈條10的張力強力作用於位於用來定義第3連結角度AG3的第3參考線LR3與第4參考線LR4之間的鏈輪齒。藉由減少第3滑動角度AGS3,則可讓踩踏左曲柄臂4驅動時的滑動部52的剛性提升。所以藉由將第1滑動角度AGS1及第3滑動角度AGS3的至少其中一方,更好是將第1滑動角度AGS1及第3滑動角度AGS3雙方變小則可提升鏈輪齒移位機構的剛性。The function of the bicycle
<第4實施方式>
參考第17圖,針對包含鏈輪齒移位機構20的一個例子的自行車用前鏈輪組裝體34加以說明。針對與第2實施方式共通的構造加上與第2實施方式相同的符號,省略重複的說明。<Fourth Embodiment>
With reference to Fig. 17, a bicycle
自行車用前鏈輪組裝體34具備有:前鏈輪6、鏈輪齒移位機構20。The bicycle
前鏈輪6包含:鏈輪主體36、與配置在鏈輪主體36的外周部的複數的鏈輪齒18。
鏈輪齒移位機構20包含:結合於前鏈輪6的鏈輪載架42、與結合於曲柄臂4及曲柄軸2的其中一方的基座構件44。The
鏈輪齒移位機構20,在組裝於曲柄軸2及曲柄臂4的自行車用前鏈輪組裝體34的組裝狀態,讓前鏈輪的複數的鏈輪齒18在至少前鏈輪6的旋轉中心軸心CA的軸方向DA可相對於曲柄臂4及曲柄軸2的上述其中一方移位,且鏈輪載架42可相對於基座構件44移動。The sprocket
鏈輪齒移位機構20的構造與第2實施方式的鏈輪齒移位機構20一致。前鏈輪6與基座構件44的緊固構造並未限定。前鏈輪6與基座構件44的緊固構造與第2實施方式舉例的緊固構造一致較佳。基座構件44與鏈輪載架42的滑動構造並未限定。基座構件44與鏈輪載架42的滑動構造與第3實施方式舉例的滑動構造一致較佳。The structure of the
基座構件44安裝於曲柄軸2及曲柄臂4的其中一方。基座構件44也可藉由花鍵卡合可裝卸地連結於曲柄軸2及曲柄臂4的其中一方。The
鏈輪主體36包含至少一個連結部70X。鏈輪載架42包含至少一個附加連結部60X。The
鏈輪主體36的至少一個連結部70X及鏈輪載架42的至少一個附加連結部60X,藉由至少一個緊固構件64互相結合。At least one connecting
鏈輪齒移位機構20包含至少一個滑動部52。至少一個緊固構件64的總數與至少一個滑動部52的總數相等。The sprocket
鏈輪主體36的至少一個連結部70X包括複數的連結部。鏈輪主體42的至少一個附加連結部60X包括複數的連結部。At least one connecting
至少一個緊固構件64包括複數的緊固構件64A、64B、64C、64D。至少一個滑動部52包括複數的滑動部52。複數的緊固部的總數與複數的滑動部52的總數相等。The at least one
至少一個滑動部52在組裝狀態配置在至少一個緊固構件64附近。
至少一個滑動部52在組裝狀態相對於至少一個緊固構件64配置在驅動旋轉方向的上游側。The at least one sliding
本實施方式的鏈輪齒移位機構20的動作與第2實施方式的鏈輪齒移位機構20的動作一致。The operation of the sprocket
說明自行車用前鏈輪組裝體34的作用。
曲柄臂4及曲柄軸2的其中一方的驅動力,從基座構件44經由鏈輪載架42傳遞到前鏈輪6。基座構件44以四個部位滑動於鏈輪載架42。如上述在鏈輪齒移位機構20,前鏈輪6的至少一個連結部70X及鏈輪載架42的至少一個附加連結部60X,藉由至少一個緊固構件64互相結合。至少一個緊固構件64的總數與至少一個滑動部52的總數相等。藉此,將驅動力從基座構件44經由滑動部52及緊固構件64傳遞到鏈輪載架42。藉由滑動部52與緊固構件64的對應關係而將驅動力有效率地傳遞到鏈輪載架42。能將驅動力有效率地從曲柄軸2傳遞到鏈輪。The function of the bicycle
<第5實施方式>
參考第18圖至第23圖,針對包含鏈輪齒移位機構20的一個例子的自行車用前鏈輪組裝體34加以說明。針對與第2實施方式共通的構造加上與第2實施方式相同的符號,省略重複的說明。<Fifth Embodiment>
With reference to FIGS. 18 to 23, a bicycle
自行車用前鏈輪組裝體34具備有:前鏈輪6、鏈輪齒移位機構20。The bicycle
前鏈輪6包含:鏈輪主體36、及在前鏈輪6的旋轉中心軸心CA的周方向DC配置在鏈輪主體36的外周的複數的鏈輪齒18。The
鏈輪齒移位機構20包含:結合於前鏈輪6的鏈輪載架42、與藉由溝卡合而結合於曲柄臂4及曲柄軸2的其中一方的基座構件44。The sprocket
鏈輪齒移位機構20,在組裝於曲柄軸2及曲柄臂4的自行車用前鏈輪組裝體34的組裝狀態,讓前鏈輪的複數的鏈輪齒18在至少前鏈輪6的旋轉中心軸心CA的軸方向DA可相對於曲柄臂4及曲柄軸2的上述其中一方移位,且鏈輪載架42可相對於基座構件44移動。The sprocket
鏈輪齒移位機構20的構造與第2實施方式的鏈輪齒移位機構20一致。前鏈輪6與基座構件44的緊固構造並未限定。前鏈輪6與基座構件44的緊固構造與第2實施方式舉例的緊固構造一致較佳。基座構件44與鏈輪載架42的滑動構造並未限定。基座構件44與鏈輪載架42的滑動構造與第3實施方式舉例的滑動構造一致較佳。The structure of the
基座構件44安裝於曲柄軸2及曲柄臂4的其中一方。基座構件44也可藉由花鍵卡合可裝卸地連結於曲柄軸2及曲柄臂4的其中一方。The
如第19圖及第20圖所示,複數的鏈輪齒18具有:相對於旋轉中心軸心CA具備有第1最大鏈條卡合軸方向寬度WA1的至少一個第1齒82、及相對於旋轉中心軸心CA具備有第2最大鏈條卡合軸方向寬度WA2的至少一個第2齒84。在旋轉中心軸心CA的軸方向DA,第1最大鏈條卡合軸方向寬度WA1大於第2最大鏈條卡合軸方向寬度WA2。As shown in Figs. 19 and 20, the
進一步具備鎖定構件46,鎖定構件46,用來在組裝狀態抑制基座構件44相對於曲柄臂4及曲柄軸2的其中一方的移位,而卡合於曲柄臂4及曲柄軸2的其中一方。It is further provided with a locking
如第18圖所示,第1徑向長度LRS1,定義為在旋轉中心軸心CA的徑向的至少一個第1齒82的第1徑向最外齒端82a與旋轉中心軸心CA之間的長度。第2徑向長度LRS2,定義為在旋轉中心軸心CA的徑向的至少一個第2齒84的第2徑向最外齒端84a與旋轉中心軸心CA之間的長度。第1徑向長度LRS1較第2徑向長度LRS2更長。As shown in Fig. 18, the first radial length LRS1 is defined as between the first radial
如第21圖所示,第1最大鏈條卡合軸方向寬度WA1,大於:在軸方向DA在自行車鏈條10的一對內連桿片92之間所定義的內連桿軸方向間隔WAI,且小於:在軸方向DA在自行車鏈條10的一對外連桿片94之間所定義的外連桿軸方向間隔WAJ。第2最大鏈條卡合軸方向寬度WA2,小於內連桿軸方向間隔WAI。As shown in Fig. 21, the first largest chain engagement axis width WA1 is greater than: the inner link axial distance WAI defined between the pair of
至少一個第1齒82的第1最大鏈條卡合軸方向寬度WA1,為外連桿軸方向間隔WAJ的75%以上較佳。至少一個第1齒82的第1最大鏈條卡合軸方向寬度WA1,為外連桿軸方向間隔WAJ的80%以上更佳。The first maximum chain engagement axis width WA1 of at least one
如第19圖所示,至少一個第1齒82,具有:在軸方向DA從至少一個第1齒82的第1軸方向齒中心面CST1偏置的第1軸方向齒端中心線LCRT1。As shown in FIG. 19, the at least one
如第20圖所示,至少一個第2齒84,具有:在軸方向DA從至少一個第2齒84的第2軸方向齒中心面CST2偏置的第2軸方向齒端中心線LCRT2。As shown in FIG. 20, at least one
如第22圖所示,至少一個第1齒82,在周方向DC相對於第1周方向齒底中心線LCT1為非對稱。具體來說,第1齒82的驅動面,其大小或形狀與第1齒82的非驅動面不同也可以。在本實施例,第1齒82的驅動面側的倒角大於第1齒82的非驅動面的倒角。在其他例子,第1齒82的驅動面的曲率與非驅動面的曲率不同也可以。As shown in FIG. 22, at least one
如第23圖所示,至少一個第2齒84,在周方向DC相對於第2周方向齒底中心線LCT2為非對稱。具體來說,第2齒84的驅動面,其大小或形狀與第2齒84的非驅動面不同也可以。在本實施例,在第2齒84的齒端的驅動面形成有缺口,在第2齒84的齒端的非驅動面沒有形成缺口。在其他例子,第2齒84的驅動面的曲率與非驅動面的曲率不同也可以。As shown in FIG. 23, at least one
如第19圖所示,至少一個第1齒82,在軸方向DA相對於第1周方向齒底中心面CST1為非對稱。
如第20圖所示,至少一個第2齒84,在軸方向DA相對於第2周方向齒底中心面CST2為非對稱。As shown in FIG. 19, at least one
至少一個第1齒82包括複數的第1齒82。至少一個第2齒84包括複數的第2齒84。複數的第1齒82及複數的第2齒84,在周方向DC交互配置。The at least one
本實施方式的鏈輪齒移位機構20的動作與第2實施方式的鏈輪齒移位機構20的動作一致。The operation of the sprocket
說明自行車用前鏈輪組裝體34的作用。
曲柄臂4及曲柄軸2的其中一方的驅動力,從鏈輪經由自行車鏈條10傳遞到複式後鏈輪組裝體16。鏈輪,藉由鏈輪齒移位機構20移動於旋轉中心軸心CA的軸方向DA。如上述如,複數的鏈輪齒18具有:相對於旋轉中心軸心CA具備有第1最大鏈條卡合軸方向寬度WA1的至少一個第1齒82、及相對於旋轉中心軸心CA具備有第2最大鏈條卡合軸方向寬度WA2的至少一個第2齒84。在旋轉中心軸心CA的軸方向DA,第1最大鏈條卡合軸方向寬度WA1大於第2最大鏈條卡合軸方向寬度WA2。藉由該構造,讓相對於自行車鏈條10的卡合力增加。尤其在鏈輪朝旋轉中心軸心CA的軸方向DA移動時,藉由增加鏈輪與自行車鏈條10的卡合力,則能抑制鏈條脫落且提升驅動效率。The function of the bicycle
A:自行車 AC1:第1共通軸心 AC2:第2共通軸心 AC3:第3共通軸心 AC4:第4共通軸心 AF1:第1緊固軸心 AF2:第2緊固軸心 AF3:第3緊固軸心 AF4:第4緊固軸心 AF5:第5緊固軸心 AF6:第6緊固軸心 AF7:第7緊固軸心 AF8:第8緊固軸心 AG1:第1連結角度 AG2:第2連結角度 AG3:第3連結角度 AG4:第4連結角度 AGS1:第1滑動角度 AGS2:第2滑動角度 AGS3:第3滑動角度 AGS4:第4滑動角度 CA:旋轉中心軸心 CS:中心面 CST1:第1軸方向齒底中心面 CST2:第2軸方向齒底中心面 LA:軸方向長度 LCRT1:第1軸方向齒端中心線 LCRT2:第2軸方向齒端中心線 LCT1:第1周方向齒底中心線 LCT2:第2周方向齒底中心線 LR1:第1參考線 LRS1:第1徑向長度 LR2:第2參考線 LRS2:第2徑向長度 LR3:第3參考線 LR4:第4參考線 PCR:軸方向中心點 PCS:軸方向中心面 PRS1:第1滑動參考線 PRS2:第2滑動參考線 PRS3:第3滑動參考線 PRS4:第4滑動參考線 PS1:第1滑動中心點 PS2:第2滑動中心點 PS3:第3滑動中心點 PS4:第4滑動中心點 RD:總軸方向移位寬度 WA1:第1最大鏈條卡合軸方向寬度 WA2:第2最大鏈條卡合軸方向寬度 WAI:內連桿軸方向間隔 WAJ:外連桿軸方向間隔 2:曲柄軸 4:曲柄臂 6:前鏈輪 8:後鏈輪 10:自行車鏈條 12:自行車用驅動系統 14:曲柄組裝體 16:複式後鏈輪組裝體 18:鏈輪齒 20:鏈輪齒移位機構 22:最小後鏈輪 24:最大後鏈輪 26:中間後鏈輪 30:軸方向外面部 32:軸方向內面部 34:自行車用前鏈輪組裝體 36:鏈輪主體 38:第1軸方向面 40:第2軸方向面 42:鏈輪載架 44:基座構件 46:鎖定機構 52:滑動部 52A:第1滑動部 52B:第2滑動部 52C:第3滑動部 52D:第4滑動部 60:連結部 60E:第5連結部 60F:第6連結部 60G:第7連結部 60H:第8連結部 60X:附加連結部 64:緊固構件 64A:第1緊固構件 64B:第2緊固構件 64C:第3緊固構件 64D:第4緊固構件 70A:第1連結部 70B:第2連結部 70C:第3連結部 70D:第4連結部 70X:連結部 82:第1齒 82a:第1徑向最外齒端 84:第2齒 84a:第2徑向最外齒端 92:內連桿片 94:外連桿片A: Bicycle AC1: 1st common axis AC2: 2nd common axis AC3: 3rd common axis AC4: 4th common axis AF1: 1st fastening axis AF2: 2nd fastening axis AF3: 3rd fastening axis AF4: 4th fastening axis AF5: 5th fastening axis AF6: The sixth fastening axis AF7: 7th fastening axis AF8: 8th fastening axis AG1: The first connection angle AG2: 2nd connection angle AG3: 3rd connection angle AG4: 4th connection angle AGS1: first sliding angle AGS2: 2nd sliding angle AGS3: 3rd sliding angle AGS4: 4th sliding angle CA: Rotation center axis CS: Center plane CST1: Center surface of tooth bottom in the first axis direction CST2: 2nd axis direction tooth bottom center plane LA: axial length LCRT1: Centerline of tooth end in the first axis direction LCRT2: 2nd axis direction tooth end centerline LCT1: Centerline of tooth bottom in the first circle LCT2: Centerline of tooth bottom in the 2nd circle LR1: The first reference line LRS1: 1st radial length LR2: 2nd reference line LRS2: 2nd radial length LR3: 3rd reference line LR4: 4th reference line PCR: axis center point PCS: axial center plane PRS1: 1st sliding reference line PRS2: 2nd sliding reference line PRS3: 3rd sliding reference line PRS4: 4th sliding reference line PS1: The first sliding center point PS2: 2nd sliding center point PS3: 3rd sliding center point PS4: 4th sliding center point RD: Shift width in the direction of the main axis WA1: The first largest chain engagement axis width WA2: The second largest chain engagement axis width WAI: Interval of inner link axis direction WAJ: Interval of outer link axis direction 2: crankshaft 4: crank arm 6: Front sprocket 8: Rear sprocket 10: Bicycle chain 12: Bicycle drive system 14: Crank assembly 16: Duplex rear sprocket assembly 18: Sprocket 20: Sprocket gear shift mechanism 22: smallest rear sprocket 24: Largest rear sprocket 26: Middle rear sprocket 30: Outer part in the axial direction 32: axial inner face 34: Front sprocket assembly for bicycle 36: Sprocket body 38: 1st axis direction surface 40: 2nd axis direction plane 42: sprocket carrier 44: base member 46: Locking mechanism 52: Sliding part 52A: The first sliding part 52B: 2nd sliding part 52C: The third sliding part 52D: 4th sliding part 60: Connection 60E: 5th connection 60F: 6th connection part 60G: 7th connection part 60H: 8th connection part 60X: Additional connection part 64: Fastening member 64A: The first fastening member 64B: The second fastening member 64C: The third fastening member 64D: 4th fastening member 70A: The first connection part 70B: The second connection part 70C: 3rd connection part 70D: 4th connection part 70X: Connection part 82: 1st tooth 82a: 1st radial outermost tooth end 84: 2nd tooth 84a: 2nd radial outermost tooth end 92: inner link piece 94: Outer connecting rod piece
[第1圖]為針對第1實施方式從上方觀察自行車的包含自行車用驅動系統的自行車示意圖。 [第2圖]為從上方觀察自行車的自行車用前鏈輪組裝體的一個例子的示意圖。 [第3圖]為從上方觀察自行車的自行車用前鏈輪組裝體的其他例子的示意圖。 [第4圖]為複式後鏈輪組裝體的俯視圖。 [第5圖是針對第1至3實施方式的包含自行車用前鏈輪組裝體的裝置的立體圖。 [第6圖]為包含自行車用前鏈輪組裝體的裝置的側視圖。 [第7圖]為包含自行車用前鏈輪組裝體的裝置的分解立體圖。 [第8圖]為鏈輪齒移位機構的分解立體圖。 [第9圖]為滑動部與保持構件的分解立體圖。 [第10圖]為沿著第6圖的X-X線的剖面圖。 [第11圖]為第10圖的局部的放大圖。 [第12圖]為前鏈輪的側視圖。 [第13圖]為鏈輪載架的側視圖。 [第14圖]為前鏈輪與鏈輪載架的組裝體的側視圖。 [第15圖]為前鏈輪與鏈輪齒移位機構與曲柄臂的組裝體的側視圖。 [第16圖]為沿著第6圖的XVI-XVI線的自行車用前鏈輪組裝體的剖面圖。 [第17圖]為針對第4實施方式的自行車用前鏈輪組裝體的側視圖。 [第18圖]是針對第5實施方式的前鏈輪的局部放大圖。 [第19圖]是第1齒的俯視圖。 [第20圖]是第2齒的俯視圖。 [第21圖]是顯示自行車鏈條與第1齒與第2齒的配置關係的示意圖。 [第22圖]是第1齒的側視圖。 [第23圖]是第2齒的側視圖。[Figure 1] is a schematic view of a bicycle including a bicycle drive system as viewed from above in relation to the first embodiment. [Figure 2] A schematic view of an example of a bicycle front sprocket assembly for a bicycle viewed from above. [Figure 3] A schematic view of another example of the bicycle front sprocket assembly for a bicycle viewed from above. [Figure 4] is a top view of the compound rear sprocket assembly. [Fig. 5 is a perspective view of a device including a bicycle front sprocket assembly according to the first to third embodiments. [Figure 6] is a side view of the device including the bicycle front sprocket assembly. [Figure 7] is an exploded perspective view of a device including a bicycle front sprocket assembly. [Figure 8] is an exploded perspective view of the sprocket gear shift mechanism. [Figure 9] is an exploded perspective view of the sliding part and the holding member. [Figure 10] is a cross-sectional view taken along line X-X in Figure 6. [Figure 11] is an enlarged view of a part of Figure 10. [Figure 12] is a side view of the front sprocket. [Figure 13] is a side view of the sprocket carrier. [Figure 14] is a side view of the assembly of the front sprocket and the sprocket carrier. [Figure 15] is a side view of the assembly of the front sprocket, sprocket gear shift mechanism, and crank arm. [Figure 16] is a cross-sectional view of the bicycle front sprocket assembly along the line XVI-XVI in Figure 6. [Figure 17] is a side view of a bicycle front sprocket assembly according to a fourth embodiment. [Figure 18] is a partial enlarged view of the front sprocket according to the fifth embodiment. [Figure 19] is a plan view of the first tooth. [Figure 20] is a plan view of the second tooth. [Figure 21] is a schematic diagram showing the arrangement relationship between the bicycle chain and the first and second teeth. [Figure 22] is a side view of the first tooth. [Figure 23] is a side view of the second tooth.
A:自行車 A: Bicycle
CA:旋轉中心軸心 CA: Rotation center axis
CS:中心面 CS: Center plane
DA:軸方向 DA: axis direction
PCR:軸方向中心點 PCR: axis center point
1:框架 1: frame
2:曲柄軸 2: crankshaft
4:曲柄臂 4: crank arm
6:前鏈輪 6: Front sprocket
8:後鏈輪 8: Rear sprocket
10:自行車鏈條 10: Bicycle chain
12:自行車用驅動系統 12: Bicycle drive system
14:曲柄組裝體 14: Crank assembly
16:複式後鏈輪組裝體 16: Duplex rear sprocket assembly
18:鏈輪齒 18: Sprocket
20:鏈輪齒移位機構 20: Sprocket gear shift mechanism
Claims (44)
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Application Number | Priority Date | Filing Date | Title |
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JP2019120267A JP2021004012A (en) | 2019-06-27 | 2019-06-27 | Driving system for bicycle and front sprocket assembly for bicycle |
JP2019-120267 | 2019-06-27 |
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TW202100402A true TW202100402A (en) | 2021-01-01 |
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TW109121057A TW202100402A (en) | 2019-06-27 | 2020-06-22 | Bicycle driving system and bicycle front sprocket assembly can suppress chain from coming off and have excellent driving efficiency |
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JP (1) | JP2021004012A (en) |
DE (1) | DE102020207182A1 (en) |
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MX2023006041A (en) | 2021-01-14 | 2023-06-02 | Nippon Steel Corp | Plated steel sheet for automobile structural members. |
DE102022212321A1 (en) | 2022-11-18 | 2024-05-23 | Shimano Inc. | FRONT SPROCKET ASSEMBLY FOR A HUMAN PROPELLED VEHICLE |
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2019
- 2019-06-27 JP JP2019120267A patent/JP2021004012A/en active Pending
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2020
- 2020-06-09 DE DE102020207182.9A patent/DE102020207182A1/en active Pending
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DE102020207182A1 (en) | 2020-12-31 |
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