TW202136113A - Bicycle rear derailleur - Google Patents

Bicycle rear derailleur Download PDF

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Publication number
TW202136113A
TW202136113A TW110101247A TW110101247A TW202136113A TW 202136113 A TW202136113 A TW 202136113A TW 110101247 A TW110101247 A TW 110101247A TW 110101247 A TW110101247 A TW 110101247A TW 202136113 A TW202136113 A TW 202136113A
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Taiwan
Prior art keywords
rear derailleur
bicycle rear
pulley
pivot axis
bicycle
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TW110101247A
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Chinese (zh)
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福森毅
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日商島野股份有限公司
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Publication of TW202136113A publication Critical patent/TW202136113A/en

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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
    • B62M9/121—Rear derailleurs
    • B62M9/126—Chain guides; Mounting thereof

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

Abstract

A bicycle rear derailleur 10 includes a base member 14, a movable member 16, a chain guide 18, a pulley 20, and a pulley displacement structure 22 that includes first and second displacement members 24, 26. The chain guide 18 is attached to the movable member 16 and pivots around a first pivot axis PA1, and the pulley 20 is rotatable around a pulley axis PU. The first displacement member 24 pivots around the pulley axis PU and a second pivot axis PA2 at the chain guide 18, and the second displacement member 26 pivots around the pulley axis PU and a third pivot axis PA3 at the movable member 16, which changes a linear distance L between the first pivot axis PA1 and the pulley axis PU when the chain guide 18 is rotated relative to the movable member 16.

Description

自行車後撥鏈器Bicycle rear derailleur

本發明關於一種自行車後撥鏈器。The invention relates to a bicycle rear derailleur.

當騎自行車時，想要的是，運用後撥鏈器來在後卡式鏈輪(cassette)中的不同鏈輪之間換檔。傳統地，後卡式鏈輪的範圍決定後撥鏈器的導鏈器的長度，其中後卡式鏈輪的較寬範圍需要較長的導鏈器，後卡式鏈輪的較小範圍允許較短的導鏈器。此設計可能會限制騎士成去使用具有較小範圍的後卡式鏈輪，特別是在進行登山騎車時，因為較長的導鏈器可能會與地形干涉，這可能造成對後撥鏈器的損害。When riding a bicycle, it is desirable to use the rear derailleur to shift gears between different sprockets in the rear cassette. Traditionally, the range of the rear cassette sprocket determines the length of the chain guide of the rear derailleur. The wider range of the rear cassette sprocket requires a longer chain guide, and the smaller range of the rear cassette sprocket allows Short chain guide. This design may limit the rider's ability to use the rear derailleur with a smaller range, especially when doing mountain biking, because the longer chain guide may interfere with the terrain, which may cause damage to the rear derailleur Damage.

發展來處理上述問題的自行車後撥鏈器在此被揭示。根據本發明的第一方面，一種自行車後撥鏈器包含被建構成被附接於自行車車架的底座構件、可相對於底座構件移動的可移動構件、被可樞轉地附接於可移動構件以繞著第一樞轉軸線樞轉的導鏈器、可繞著滑輪軸線旋轉的至少一個滑輪、及滑輪移位結構。滑輪移位結構包括被可樞轉地附接於至少一個滑輪以繞著滑輪軸線樞轉的第一移位構件、及被可樞轉地附接於至少一個滑輪以繞著滑輪軸線樞轉的第二移位構件。第一移位構件被可樞轉地附接於導鏈器以繞著第二樞轉軸線樞轉，且第二移位構件被可樞轉地附接於可移動構件以繞著第三樞轉軸線樞轉。A bicycle rear derailleur developed to deal with the above-mentioned problems is disclosed here. According to a first aspect of the present invention, a bicycle rear derailleur includes a base member configured to be attached to a bicycle frame, a movable member movable relative to the base member, and a movable member pivotally attached to the base member. The component uses a chain guide that pivots around a first pivot axis, at least one pulley that can rotate around the pulley axis, and a pulley displacement structure. The pulley displacement structure includes a first displacement member pivotally attached to at least one pulley to pivot about the pulley axis, and a first displacement member pivotally attached to the at least one pulley to pivot about the pulley axis The second displacement member. The first displacement member is pivotally attached to the chain guide to pivot about the second pivot axis, and the second displacement member is pivotably attached to the movable member to about the third pivot The axis of rotation pivots.

利用根據第一方面的自行車後撥鏈器，有可能的是，將導引滑輪相對於可移動構件及導鏈器移動。With the bicycle rear derailleur according to the first aspect, it is possible to move the guide pulley relative to the movable member and the chain guide.

根據本發明的第二方面，自行車後撥鏈器被建構成使得滑輪移位結構被建構成回應於導鏈器相對於可移動構件的旋轉移動而改變第一樞轉軸線與滑輪軸線之間的線性距離。利用根據第二方面的自行車後撥鏈器，有可能的是，在未增加導鏈器的長度的情形下增加後卡式鏈輪的範圍。According to the second aspect of the present invention, the bicycle rear derailleur is constructed such that the pulley displacement structure is constructed to change the relationship between the first pivot axis and the pulley axis in response to the rotational movement of the chain guide relative to the movable member. Linear distance. With the bicycle rear derailleur according to the second aspect, it is possible to increase the range of the rear clip sprocket without increasing the length of the chain guide.

根據本發明的第三方面，自行車後撥鏈器被建構成使得偏壓構件被設置在可移動構件與第二移位構件之間。利用根據第三方面的自行車後撥鏈器，有可能的是，在導鏈器相對於可移動構件旋轉的情形下將導引滑輪相對於可移動構件偏壓。According to the third aspect of the present invention, the bicycle rear derailleur is constructed such that the biasing member is provided between the movable member and the second displacement member. With the bicycle rear derailleur according to the third aspect, it is possible to bias the guide pulley with respect to the movable member in a situation where the chain guide rotates with respect to the movable member.

根據本發明的第四方面，自行車後撥鏈器被建構成使得偏壓構件是扭轉彈簧。利用根據第四方面的自行車後撥鏈器，有可能的是，在導鏈器相對於可移動構件旋轉的情形下將導引滑輪相對於可移動構件偏壓。According to the fourth aspect of the present invention, the bicycle rear derailleur is constructed so that the biasing member is a torsion spring. With the bicycle rear derailleur according to the fourth aspect, it is possible to bias the guide pulley with respect to the movable member in a situation where the chain guide rotates with respect to the movable member.

根據本發明的第五方面，自行車後撥鏈器被建構成使得扭轉彈簧相對於第三樞轉軸線同軸地設置。利用根據第五方面的自行車後撥鏈器，有可能的是，在導鏈器相對於可移動構件旋轉的情形下將導引滑輪相對於可移動構件偏壓。According to the fifth aspect of the present invention, the bicycle rear derailleur is constructed such that the torsion spring is arranged coaxially with respect to the third pivot axis. With the bicycle rear derailleur according to the fifth aspect, it is possible to bias the guide pulley with respect to the movable member in a situation where the chain guide rotates with respect to the movable member.

根據本發明的第六方面，自行車後撥鏈器被建構成使得偏壓構件被設置在導鏈器與第一移位構件之間。利用根據第六方面的自行車後撥鏈器，有可能的是，在導鏈器相對於可移動構件旋轉的情形下將導引滑輪相對於可移動構件偏壓。According to the sixth aspect of the present invention, the bicycle rear derailleur is constructed such that the biasing member is provided between the chain guide and the first displacement member. With the bicycle rear derailleur according to the sixth aspect, it is possible to bias the guide pulley with respect to the movable member in a situation where the chain guide rotates with respect to the movable member.

根據本發明的第七方面，自行車後撥鏈器被建構成使得偏壓構件是扭轉彈簧。利用根據第七方面的自行車後撥鏈器，有可能的是，在導鏈器相對於可移動構件旋轉的情形下將導引滑輪相對於可移動構件偏壓。According to the seventh aspect of the present invention, the bicycle rear derailleur is constructed so that the biasing member is a torsion spring. With the bicycle rear derailleur according to the seventh aspect, it is possible to bias the guide pulley with respect to the movable member in a situation where the chain guide rotates with respect to the movable member.

根據本發明的第八方面，自行車後撥鏈器被建構成使得扭轉彈簧相對於第三樞轉軸線同軸地設置。利用根據第八方面的自行車後撥鏈器，有可能的是，在導鏈器相對於可移動構件旋轉的情形下將導引滑輪相對於可移動構件偏壓。According to the eighth aspect of the present invention, the bicycle rear derailleur is constructed such that the torsion spring is arranged coaxially with respect to the third pivot axis. With the bicycle rear derailleur according to the eighth aspect, it is possible to bias the guide pulley with respect to the movable member in a situation where the chain guide rotates with respect to the movable member.

根據本發明的第九方面，自行車後撥鏈器被建構成使得導鏈器包括一對的導鏈板。利用根據第九方面的自行車後撥鏈器，有可能的是，將導引滑輪相對於可移動構件及導鏈器移動。According to a ninth aspect of the present invention, the bicycle rear derailleur is constructed such that the chain guide includes a pair of chain guide plates. With the bicycle rear derailleur according to the ninth aspect, it is possible to move the guide pulley relative to the movable member and the chain guide.

根據本發明的第十方面，自行車後撥鏈器被建構成使得一對的導鏈板包括內板及外板。利用根據第十方面的自行車後撥鏈器，有可能的是，將導引滑輪相對於可移動構件及導鏈器移動。According to the tenth aspect of the present invention, the bicycle rear derailleur is constructed such that a pair of chain guide plates include an inner plate and an outer plate. With the bicycle rear derailleur according to the tenth aspect, it is possible to move the guide pulley relative to the movable member and the chain guide.

根據本發明的第十一方面，自行車後撥鏈器被建構成使得第一移位構件被可樞轉地附接於外板，以繞著第二樞轉軸線樞轉。利用根據第十一方面的自行車後撥鏈器，有可能的是，將導引滑輪及導鏈器相對於可移動構件移動。According to the eleventh aspect of the present invention, the bicycle rear derailleur is constructed such that the first displacement member is pivotally attached to the outer panel to pivot about the second pivot axis. With the bicycle rear derailleur according to the eleventh aspect, it is possible to move the guide pulley and the chain guide relative to the movable member.

根據本發明的第十二方面，自行車後撥鏈器被建構成使得第一樞轉軸線與第二樞轉軸線及第三樞轉軸線平行，第一樞轉軸線及第二樞轉軸線以第一距離隔開，第一樞轉軸線及第三樞轉軸線以第二距離隔開，且第二距離大於第一距離。利用根據第十二方面的自行車後撥鏈器，有可能的是，在未增加導鏈器的長度的情形下增加後卡式鏈輪的範圍。According to the twelfth aspect of the present invention, the bicycle rear derailleur is constructed such that the first pivot axis is parallel to the second pivot axis and the third pivot axis, and the first pivot axis and the second pivot axis are in parallel with each other. Separated by a distance, the first pivot axis and the third pivot axis are separated by a second distance, and the second distance is greater than the first distance. With the bicycle rear derailleur according to the twelfth aspect, it is possible to increase the range of the rear clip sprocket without increasing the length of the chain guide.

根據本發明的第十三方面，一種自行車後撥鏈器包含被建構成被附接於自行車車架的底座構件、被建構成可相對於底座構件移動的可移動構件、被可樞轉地附接於可移動構件以繞著樞轉軸線樞轉的導鏈器、可繞著滑輪軸線旋轉的至少一個滑輪、及被建構成回應於導鏈器相對於可移動構件的旋轉移動而改變樞轉軸線與滑輪軸線之間的線性距離的滑輪移位結構。利用根據第十三方面的自行車後撥鏈器，有可能的是，在未增加導鏈器的長度的情形下增加後卡式鏈輪的範圍。According to a thirteenth aspect of the present invention, a bicycle rear derailleur includes a base member constructed to be attached to a bicycle frame, a movable member constructed to be movable relative to the base member, and pivotally attached A chain guide connected to the movable member to pivot about the pivot axis, at least one pulley rotatable about the pulley axis, and configured to change the pivot axis in response to the rotational movement of the chain guide relative to the movable member A pulley shift structure with a linear distance between the wire and the pulley axis. With the bicycle rear derailleur according to the thirteenth aspect, it is possible to increase the range of the rear clip sprocket without increasing the length of the chain guide.

根據本發明的第十四方面，自行車後撥鏈器被建構成使得樞轉軸線是第一樞轉軸線，滑輪移位結構包括第一移位構件及第二移位構件，第一移位構件及第二移位構件被可樞轉地附接於至少一個滑輪以繞著滑輪軸線旋轉，第一移位構件被可樞轉地附接於導鏈器以繞著第二樞轉軸線樞轉，第二移位構件被可樞轉地附接於可移動構件以繞著第三樞轉軸線樞轉，第一樞轉軸線與第二樞轉軸線及第三樞轉軸線平行，第一樞轉軸線及第二樞轉軸線以第一距離隔開，第一樞轉軸線及第三樞轉軸線以第二距離隔開，且第二距離大於第一距離。利用根據第十四方面的自行車後撥鏈器，有可能的是，在未增加導鏈器的長度的情形下增加後卡式鏈輪的範圍。According to the fourteenth aspect of the present invention, the bicycle rear derailleur is constructed such that the pivot axis is the first pivot axis, the pulley shifting structure includes a first shifting member and a second shifting member, the first shifting member And the second displacement member is pivotally attached to at least one pulley to rotate about the pulley axis, and the first displacement member is pivotally attached to the chain guide to pivot about the second pivot axis , The second displacement member is pivotally attached to the movable member to pivot about the third pivot axis, the first pivot axis is parallel to the second pivot axis and the third pivot axis, and the first pivot The rotation axis and the second pivot axis are separated by a first distance, the first pivot axis and the third pivot axis are separated by a second distance, and the second distance is greater than the first distance. With the bicycle rear derailleur according to the fourteenth aspect, it is possible to increase the range of the rear clip sprocket without increasing the length of the chain guide.

根據本發明的第十五方面，自行車後撥鏈器被建構成使得自行車後撥鏈器包括阻尼器機構。利用根據第十五方面的自行車後撥鏈器，有可能的是，防止回應於鏈條張力上改變的突然移動。According to the fifteenth aspect of the present invention, the bicycle rear derailleur is constructed such that the bicycle rear derailleur includes a damper mechanism. With the bicycle rear derailleur according to the fifteenth aspect, it is possible to prevent sudden movement in response to changes in chain tension.

根據本發明的第十六方面，自行車後撥鏈器被建構成使得自行車後撥鏈器包括馬達安裝部。利用根據第十六方面的自行車後撥鏈器，有可能的是，將後撥鏈器建構為電子後撥鏈器。According to the sixteenth aspect of the present invention, the bicycle rear derailleur is constructed such that the bicycle rear derailleur includes a motor mounting portion. With the bicycle rear derailleur according to the sixteenth aspect, it is possible to construct the rear derailleur as an electronic rear derailleur.

根據本發明的第十七方面，自行車後撥鏈器被建構成使得馬達安裝部被設置在底座構件處。利用根據第十七方面的自行車後撥鏈器，有可能的是，將後撥鏈器建構為電子後撥鏈器。According to the seventeenth aspect of the present invention, the bicycle rear derailleur is constructed such that the motor mounting portion is provided at the base member. With the bicycle rear derailleur according to the seventeenth aspect, it is possible to construct the rear derailleur as an electronic rear derailleur.

根據本發明的第十八方面，自行車後撥鏈器被建構成使得自行車後撥鏈器包括電池。利用根據第十八方面的自行車後撥鏈器，有可能的是，將後撥鏈器建構為電子後撥鏈器。According to the eighteenth aspect of the present invention, the bicycle rear derailleur is constructed such that the bicycle rear derailleur includes a battery. With the bicycle rear derailleur according to the eighteenth aspect, it is possible to construct the rear derailleur as an electronic rear derailleur.

根據本發明的第十九方面，自行車後撥鏈器被建構成使得自行車後撥鏈器包括充電埠。利用根據第十九方面的自行車後撥鏈器，有可能的是，將後撥鏈器的電池充電。According to the nineteenth aspect of the present invention, the bicycle rear derailleur is constructed such that the bicycle rear derailleur includes a charging port. With the bicycle rear derailleur according to the nineteenth aspect, it is possible to charge the battery of the rear derailleur.

根據本發明的第二十方面，自行車後撥鏈器被建構成使得自行車後撥鏈器包括無線單元。利用根據第二十方面的自行車後撥鏈器，有可能的是，將後撥鏈器建構為可無線控制的電子後撥鏈器。According to the twentieth aspect of the present invention, the bicycle rear derailleur is constructed such that the bicycle rear derailleur includes a wireless unit. Using the bicycle rear derailleur according to the twentieth aspect, it is possible to construct the rear derailleur as an electronic rear derailleur that can be controlled wirelessly.

根據本發明的第二十一方面，自行車後撥鏈器被建構成使得自行車後撥鏈器的底座構件被直接地耦接於自行車車架。利用根據第二十一方面的自行車後撥鏈器，有可能的是，將後撥鏈器經由底座構件牢固於自行車。According to the twenty-first aspect of the present invention, the bicycle rear derailleur is constructed such that the base member of the bicycle rear derailleur is directly coupled to the bicycle frame. With the bicycle rear derailleur according to the twenty-first aspect, it is possible to secure the rear derailleur to the bicycle via the base member.

此發明內容被提供來以簡化形式介紹概念的選集，這些概念在以下於實施方式中進一步被描述。此發明內容並非旨在識別所請求的標的之關鍵特徵或必要特徵，亦非旨在被使用來限制所請求的標的之範圍。此外，所請求的標的不受限於解決此揭示的任何部分中所提的任何或全部的缺點之施作。在此所使用的用語「小型及/或輕型車輛」是指不論其輪子數量為何之電動或非電動車輛，但不包括具有作為用來驅動輪子的動力源的內燃引擎之四輪車輛、或需要執照以在公共道路上操作之四輪電動車輛。This summary is provided to introduce a selection of concepts in a simplified form, which are further described in the embodiments below. This summary is not intended to identify key features or essential features of the requested subject matter, nor is it intended to be used to limit the scope of the requested subject matter. In addition, the requested subject matter is not limited to the implementation of any or all of the shortcomings mentioned in any part of this disclosure. The term "small and/or light vehicle" as used herein refers to electric or non-electric vehicles regardless of the number of wheels, but does not include four-wheeled vehicles with internal combustion engines as the power source for driving the wheels, or A four-wheel electric vehicle that requires a license to operate on public roads.

現在將參照圖式來解釋所選的實施例，其中相同元件符號在遍及各種不同圖式中標示對應或相等元件。對於熟習本領域技術者從此揭示將會明白的是，以下實施例說明僅被提供來用於繪示說明，而非以限制由隨附的申請專利範圍及其等效物所界定的本發明為目的。The selected embodiments will now be explained with reference to the drawings, in which the same element symbols designate corresponding or equivalent elements throughout the various drawings. For those skilled in the art from this disclosure, it will be clear that the following embodiment descriptions are only provided for illustration and not to limit the present invention defined by the scope of the attached patent application and its equivalents. Purpose.

先參照圖1，具有根據本發明的至少一個所揭示實施例的自行車後撥鏈器10之範例自行車1被顯示。自行車1例如是像是越野(cyclocross)自行車或登山自行車之道路外(off-road)自行車。替代地，自行車1可為道路型自行車。如圖2的示意輪廓中所示，自行車1可具有界定自行車1的左半部及右半部的軸向中心平面P1。以下方向性用語「前」、「後」、「向前」、「向後」、「左」、「右」、「橫截」、「向上」、及「向下」、以及其他類似方向性用語是指例如以直立地坐在自行車1的鞍座上並面向車把之騎士為基礎所判斷的那些方向。Referring first to FIG. 1, an example bicycle 1 having a bicycle rear derailleur 10 according to at least one disclosed embodiment of the present invention is shown. The bicycle 1 is, for example, an off-road bicycle such as a cyclocross bicycle or mountain bicycle. Alternatively, the bicycle 1 may be a road-type bicycle. As shown in the schematic outline of FIG. 2, the bicycle 1 may have an axial center plane P1 that defines the left half and the right half of the bicycle 1. The following directional terms "front", "rear", "forward", "backward", "left", "right", "cross", "up", and "down", and other similar directional terms For example, it refers to those directions judged based on the rider sitting upright on the saddle of the bicycle 1 and facing the handlebar.

繼續參照圖1，自行車1包括被附接於後輪3的車架2。前叉4將前輪5附接於車架2。自行車1兩側上的踏板6被附接於對應的曲柄臂7。曲柄臂7以彼此180度隔開的方式被安裝於車架2的兩側上，且由曲柄軸8(由虛線所指出)所連接。本實施例的自行車1由鏈條驅動傳動系統所驅動，此鏈條驅動傳動系統包自行車括鏈條9、自行車後撥鏈器10、卡式後鏈輪11、及前鏈輪12。自行車鏈條9與卡式後鏈輪11中的一者及前鏈輪12接合。被施加於踏板6的驅動力使曲柄軸8及前鏈輪12旋轉。當前鏈輪12旋轉時，自行車鏈條9繞著卡式後鏈輪11中的一者被驅動，卡式後鏈輪11中的該一者將動力傳輸至後輪3，以推動自行車1。後撥鏈器10將自行車鏈條9在後鏈輪11之間移位，以增加或減少對於踏板6的每次旋轉所行進之距離。自行車1的其他部件是所熟知的且在此不被描述。With continued reference to FIG. 1, the bicycle 1 includes a frame 2 attached to the rear wheel 3. The front fork 4 attaches the front wheel 5 to the frame 2. The pedals 6 on both sides of the bicycle 1 are attached to the corresponding crank arms 7. The crank arms 7 are mounted on both sides of the frame 2 so as to be 180 degrees apart from each other, and are connected by a crank shaft 8 (indicated by the dashed line). The bicycle 1 of this embodiment is driven by a chain drive transmission system. The chain drive transmission system includes a bicycle chain 9, a bicycle rear derailleur 10, a card-type rear sprocket 11, and a front sprocket 12. The bicycle chain 9 is engaged with one of the card-type rear sprocket 11 and the front sprocket 12. The driving force applied to the pedal 6 rotates the crankshaft 8 and the front sprocket 12. When the front sprocket 12 rotates, the bicycle chain 9 is driven around one of the card-type rear sprockets 11, and the one of the card-type rear sprockets 11 transmits power to the rear wheel 3 to propel the bicycle 1. The rear derailleur 10 shifts the bicycle chain 9 between the rear sprockets 11 to increase or decrease the distance traveled by each rotation of the pedal 6. The other components of the bicycle 1 are well known and will not be described here.

圖3是根據本揭示的自行車後撥鏈器10的右側立體圖。如所繪示，自行車後撥鏈器10包含底座構件14、可移動構件16、導鏈器18、至少一個滑輪20、及滑輪移位結構22。底座構件14被建構成被附接於自行車車架2。可移動構件16被建構成可相對於底座構件14移動，且導鏈器18被可樞轉地附接於可移動構件16。FIG. 3 is a right side perspective view of the bicycle rear derailleur 10 according to the present disclosure. As shown, the bicycle rear derailleur 10 includes a base member 14, a movable member 16, a chain guide 18, at least one pulley 20, and a pulley shift structure 22. The base member 14 is constructed to be attached to the bicycle frame 2. The movable member 16 is constructed to be movable relative to the base member 14, and the chain guide 18 is pivotally attached to the movable member 16.

如圖4所繪示的自行車後撥鏈器的俯視立體圖中所示，導鏈器18被建構成繞著樞轉軸線樞轉，此樞轉軸線是如短虛線(short dash line)所指出的第一樞轉軸線PA1。至少一個滑輪20可繞著如虛點線(dash-dot line)所指出的滑輪軸線PU旋轉。如圖5中所示，至少一個滑輪20包括至少一個滑輪本體19及至少一個滑輪軸21。將會明白的是，在此所描述的至少一個滑輪20例如被建構為可繞著第一滑輪軸線PU1旋轉的導引滑輪20A。附加地或替代地，至少一個滑輪20可被建構為可繞著如虛點點線(dash-dot-dot line)所指出的第二滑輪軸線PU2旋轉的張緊滑輪20B。換言之，至少一個滑輪20可包括導引滑輪20A及張緊滑輪20B中的至少一者。在所繪示的實施例中，至少一個滑輪20包括導引滑輪20A及張緊滑輪20B兩者。至少一個滑輪本體19可包括導引滑輪本體19A及張緊滑輪本體19B。至少一個滑輪軸21可包括導引滑輪軸21A及張緊滑輪軸21B。然而，本發明不受限於所繪示的實施例。例如，至少一個滑輪20可包括僅一個滑輪，其包括一個滑輪本體及一個滑輪軸。替代地，至少一個滑輪20可包括超過兩個的滑輪，其各包括一個滑輪本體及一個滑輪軸。As shown in the top perspective view of the bicycle rear derailleur shown in FIG. 4, the chain guide 18 is constructed to pivot about a pivot axis, which is indicated by a short dash line The first pivot axis PA1. At least one pulley 20 can rotate around the pulley axis PU as indicated by a dash-dot line. As shown in FIG. 5, the at least one pulley 20 includes at least one pulley body 19 and at least one pulley shaft 21. It will be understood that the at least one pulley 20 described herein is, for example, configured as a guide pulley 20A rotatable about the first pulley axis PU1. Additionally or alternatively, at least one pulley 20 may be constructed as a tension pulley 20B that can rotate about the second pulley axis PU2 as indicated by a dash-dot-dot line. In other words, the at least one pulley 20 may include at least one of the guide pulley 20A and the tension pulley 20B. In the illustrated embodiment, the at least one pulley 20 includes both a guide pulley 20A and a tension pulley 20B. The at least one pulley body 19 may include a guide pulley body 19A and a tension pulley body 19B. The at least one pulley shaft 21 may include a guide pulley shaft 21A and a tension pulley shaft 21B. However, the present invention is not limited to the illustrated embodiment. For example, the at least one pulley 20 may include only one pulley, which includes a pulley body and a pulley shaft. Alternatively, at least one pulley 20 may include more than two pulleys, each of which includes a pulley body and a pulley shaft.

如所繪示，滑輪移位結構22包括第一移位構件24及第二移位構件26。第一移位構件24被可樞轉地附接於至少一個滑輪20，以繞著滑輪軸線PU樞轉。第一移位構件24還被可樞轉地附接於導鏈器18，以繞著如虛線所指出的第二樞轉軸線PA2樞轉。如同第一移位構件24，第二移位構件26被可樞轉地附接於至少一個滑輪20，以繞著滑輪軸線PU樞轉。第二移位構件26還被可樞轉地附接於可移動構件16，以繞著如長虛線(long dash line)所指出的第三樞轉軸線PA3樞轉。As shown, the pulley shift structure 22 includes a first shift member 24 and a second shift member 26. The first displacement member 24 is pivotally attached to at least one pulley 20 to pivot about the pulley axis PU. The first displacement member 24 is also pivotally attached to the chain guide 18 to pivot about the second pivot axis PA2 as indicated by the dashed line. Like the first displacement member 24, the second displacement member 26 is pivotally attached to at least one pulley 20 to pivot about the pulley axis PU. The second displacement member 26 is also pivotally attached to the movable member 16 to pivot about a third pivot axis PA3 as indicated by a long dash line.

偏壓構件28被設置在可移動構件16與第二移位構件26之間，且可在一端被連接於可移動構件16且在另一端被連接於第二移位構件26。在替代的實施例中，偏壓構件28被設置在導鏈器18與第一移位構件24之間，且可在一端被連接於導鏈器18且在另一端被連接於第一移位構件24。在任一實施例中，偏壓構件28是相對於第三樞轉軸線PA3同軸地設置的扭轉彈簧。因此，偏壓構件28被建構成在導鏈器18相對於可移動構件16順時針旋轉時將滑輪移位結構22偏壓。The biasing member 28 is provided between the movable member 16 and the second displacement member 26, and may be connected to the movable member 16 at one end and to the second displacement member 26 at the other end. In an alternative embodiment, the biasing member 28 is provided between the chain guide 18 and the first displacement member 24, and may be connected to the chain guide 18 at one end and to the first displacement at the other end. Component 24. In either embodiment, the biasing member 28 is a torsion spring arranged coaxially with respect to the third pivot axis PA3. Therefore, the biasing member 28 is configured to bias the pulley displacement structure 22 when the chain guide 18 rotates clockwise relative to the movable member 16.

如圖4中所示，第一樞轉軸線PA1與第二樞轉軸線PA2及第三樞轉軸線PA3平行。第一樞轉軸線PA1與第二樞轉軸線PA2以第一距離D1隔開，且第一樞轉軸線PA1與第三樞轉軸線PA3以第二距離D2隔開。第二距離D2大於第一距離D1，這確保在換檔及騎乘操作期間有效的鏈條張力被維持且在這樣的操作期間沒有多餘的鏈條長度。As shown in FIG. 4, the first pivot axis PA1 is parallel to the second pivot axis PA2 and the third pivot axis PA3. The first pivot axis PA1 and the second pivot axis PA2 are separated by a first distance D1, and the first pivot axis PA1 and the third pivot axis PA3 are separated by a second distance D2. The second distance D2 is greater than the first distance D1, which ensures that the effective chain tension during shifting and riding operations is maintained and there is no excess chain length during such operations.

圖5是自行車後撥鏈器10的分解圖，其繪示底座構件14、可移動構件16、導鏈器18、導引滑輪20A、張緊滑輪20B、及滑輪移位結構22相對於彼此的組態及樞轉軸線PA1、PA2、及PA3及滑輪軸線PU。可移動構件16可相對於底座構件14移動，底座構件14充當為後撥鏈器10至自行車1的車架2之附接點。如以上所描述，導鏈器18被附接於可移動構件16且被建構成繞著第一樞轉軸線PA1旋轉。第一移位構件24被附接於導鏈器18且被建構成繞著第二樞轉軸線PA2旋轉。如圖5中所見，導鏈器18包括一對的導鏈板，且此對的導鏈板包括內板18A及外板18B。因此，第一移位構件24被可樞轉地附接於外板18B，以繞著第二樞轉軸線PA2樞轉。又如以上所描述，第二移位構件26被附接於可移動構件16且被建構成繞著第三樞轉軸線PA3旋轉。在所繪示的實施例中，第一移位構件24及第二移位構件26兩者皆被附接於導引滑輪20A且繞著第一滑輪軸線PU1旋轉。將會明白的是，自行車後撥鏈器10的分解圖個別地繪示每一個組件，且當組合時，偏壓構件28可在一端被連接於可移動構件16且在另一端被連接於第二移位構件26。5 is an exploded view of the bicycle rear derailleur 10, which shows the base member 14, the movable member 16, the chain guide 18, the guide pulley 20A, the tension pulley 20B, and the pulley shift structure 22 relative to each other Configure and pivot axes PA1, PA2, and PA3 and pulley axis PU. The movable member 16 is movable relative to the base member 14, and the base member 14 serves as an attachment point for the rear derailleur 10 to the frame 2 of the bicycle 1. As described above, the chain guide 18 is attached to the movable member 16 and is configured to rotate about the first pivot axis PA1. The first displacement member 24 is attached to the chain guide 18 and is configured to rotate about the second pivot axis PA2. As seen in FIG. 5, the chain guide 18 includes a pair of chain guide plates, and the pair of chain guide plates includes an inner plate 18A and an outer plate 18B. Therefore, the first displacement member 24 is pivotally attached to the outer plate 18B to pivot about the second pivot axis PA2. As also described above, the second displacement member 26 is attached to the movable member 16 and is configured to rotate about the third pivot axis PA3. In the illustrated embodiment, both the first displacement member 24 and the second displacement member 26 are attached to the guide pulley 20A and rotate around the first pulley axis PU1. It will be understood that the exploded view of the bicycle rear derailleur 10 shows each component individually, and when combined, the biasing member 28 may be connected to the movable member 16 at one end and to the second end at the other end. Two shifting member 26.

圖6A至圖6C顯示自行車後撥鏈器10的不同檔位的右側視圖。確切地，圖6A顯示自行車後撥鏈器10在鏈條9與卡式後鏈輪11的大鏈輪接合且自行車處於低檔位時的組態，圖6B顯示自行車後撥鏈器10在鏈條9與卡式後鏈輪11的中鏈輪接合且自行車處於中檔位時的組態，及圖6C顯示自行車後撥鏈器10在鏈條9與卡式後鏈輪11的小鏈輪接合且自行車處於高檔位時的組態。當自行車後撥鏈器10將鏈條9移動至卡式後鏈輪的不同鏈輪時，導鏈器18相對於可旋轉構件16旋轉。利用在此所描述的自行車後撥鏈器10，滑輪移位結構22被建構成回應於導鏈器18相對於可移動構件16的旋轉移動而改變第一樞轉軸線PA1與滑輪軸線PU之間的線性距離L，如圖6A至圖6C中所指出。藉由運用滑輪移位結構22來根據鏈條所結合的後鏈輪的尺寸而建立可移動構件16的第一樞轉軸線PA1與導引滑輪20A的滑輪軸線PU之間的線性移位，自行車後撥鏈器10能在不需要增加導鏈器18的長度之情形下調整鏈條9與寬範圍的卡式後鏈輪11接合的長度。此外，當鏈條9與小鏈輪接合時及當鏈條與大鏈輪接合時，鏈輪齒與導引滑輪齒之間的距離可被保持成實質相同，這將傳動效率改善成優於傳統自行車後撥鏈器。6A to 6C show right side views of different gears of the bicycle rear derailleur 10. Specifically, Figure 6A shows the configuration of the bicycle rear derailleur 10 when the chain 9 is engaged with the large sprocket of the card-type rear sprocket 11 and the bicycle is in a low gear. Figure 6B shows the bicycle rear derailleur 10 in the chain 9 and The configuration when the middle sprocket of the cassette rear sprocket 11 is engaged and the bicycle is in the middle gear, and FIG. 6C shows the bicycle rear derailleur 10 when the chain 9 is engaged with the small sprocket of the cassette rear sprocket 11 and the bicycle is in Configuration at high gear. When the bicycle rear derailleur 10 moves the chain 9 to a different sprocket of the card-type rear sprocket, the chain guide 18 rotates relative to the rotatable member 16. Using the bicycle rear derailleur 10 described herein, the pulley shifting structure 22 is constructed to change between the first pivot axis PA1 and the pulley axis PU in response to the rotational movement of the chain guide 18 relative to the movable member 16. The linear distance L is as indicated in Fig. 6A to Fig. 6C. By using the pulley displacement structure 22 to establish a linear displacement between the first pivot axis PA1 of the movable member 16 and the pulley axis PU of the guide pulley 20A according to the size of the rear sprocket to which the chain is combined, the bicycle rear The derailleur 10 can adjust the length of the engagement between the chain 9 and the card-type rear sprocket 11 in a wide range without increasing the length of the chain guide 18. In addition, when the chain 9 is engaged with the small sprocket and when the chain is engaged with the large sprocket, the distance between the sprocket teeth and the guide pulley teeth can be kept substantially the same, which improves the transmission efficiency to be better than that of a conventional bicycle Rear derailleur.

在一些施作中，可為想要的是，自行車後撥鏈器10利用電組件而非利用手動操作纜線而以無線方式被控制。圖7顯示可以電子方式被啟用的自行車後撥鏈器10的示意方塊圖。附加於底座構件14、可移動構件16、導鏈器18、滑輪20、及滑輪移位結構22，自行車撥鏈器10還可包括用來電子地控制自行車後撥鏈器10的組件。為此目的，自行車後撥鏈器10包括馬達安裝部30，且馬達安裝部30被設置在底座構件14處。自行車後撥鏈器10包括電池32，以將電力提供給被安裝在底座構件上的馬達。附加地，自行車後撥鏈器10包括充電埠34，其被建構成接收用來將電池32充電的纜線。為了使騎士能夠電子地控制自行車後撥鏈器，自行車後撥鏈器10包括無線單元36，其被建構成執行自騎士所接收的換檔命令。In some implementations, it may be desirable for the bicycle rear derailleur 10 to be controlled wirelessly using electrical components instead of using a manually operated cable. FIG. 7 shows a schematic block diagram of a bicycle rear derailleur 10 that can be activated electronically. In addition to the base member 14, the movable member 16, the chain guide 18, the pulley 20, and the pulley shift structure 22, the bicycle derailleur 10 may also include components for electronically controlling the bicycle rear derailleur 10. For this purpose, the bicycle rear derailleur 10 includes a motor mounting part 30, and the motor mounting part 30 is provided at the base member 14. The bicycle rear derailleur 10 includes a battery 32 to supply electric power to a motor mounted on the base member. Additionally, the bicycle rear derailleur 10 includes a charging port 34 configured to receive a cable for charging the battery 32. In order to enable the rider to electronically control the bicycle rear derailleur, the bicycle rear derailleur 10 includes a wireless unit 36 configured to execute shift commands received from the rider.

當進行登山騎車(mountain biking)或競賽騎車(race cycling)時，騎士可能會遭遇到粗糙或不平的地形，且可為想要的是，確保自行車後撥鏈器10被牢固地附接於自行車車架2。因此，被設計來用於登山騎車或競賽騎車的自行車1可被建構成使得自行車後撥鏈器10的底座構件14被直接地耦接於自行車車架2。在這樣的狀況下，亦可為想要的是，確保換檔操作儘可能地流暢及將鏈條掉落最小化。為了防止自行車後撥鏈器10回應於鏈條張力上改變的突然移動，自行車1可被建構成使得自行車後撥鏈器10包括阻尼器機構38。When performing mountain biking or race cycling, the rider may encounter rough or uneven terrain, and it may be desirable to ensure that the bicycle rear derailleur 10 is firmly attached In the bicycle frame 2. Therefore, the bicycle 1 designed for mountain biking or racing cycling can be constructed such that the base member 14 of the bicycle rear derailleur 10 is directly coupled to the bicycle frame 2. Under such conditions, it is also desirable to ensure that the shifting operation is as smooth as possible and to minimize the chain drop. In order to prevent the bicycle rear derailleur 10 from suddenly moving in response to changes in chain tension, the bicycle 1 may be constructed such that the bicycle rear derailleur 10 includes a damper mechanism 38.

雖然僅所選的實施例已經被選來繪示說明本發明，對於熟習本領域技術者從此揭示將會明白的是，在不離開如隨附的申請專利範圍中所界定的本發明範圍的情形下，在此能作成各種不同的變化及修改。例如，各種不同組件的尺寸、形狀、位置、或定向能依所需要及/或想要而變化。被顯示成直接連接或互相接觸的組件能具有設置在它們之間的中間結構。一個元件的功能可由二個元件來實施，且反之亦然。一個實施例的結構及功能能在另一個實施例中被採用。所有的優點不必同時呈現在一個特別的實施例中。相較於習知技術為獨特的每一特徵，不論是單獨或與其他特徵組合，亦應被視為申請人的進一步發明的分開描述，包含由這樣的特徵所具體實現的結構性及/或功能性概念。因此，根據本發明的實施例的前述說明僅用於繪示說明，而非以限制由隨附的申請專利範圍及其等效物所界定的本發明為目的。Although only selected embodiments have been selected to illustrate the present invention, it will be clear to those skilled in the art from this disclosure that without departing from the scope of the present invention as defined in the appended patent application Below, various changes and modifications can be made here. For example, the size, shape, location, or orientation of various components can be changed as needed and/or desired. Components shown as directly connected or in contact with each other can have intermediate structures disposed between them. The function of one element can be implemented by two elements, and vice versa. The structure and function of one embodiment can be adopted in another embodiment. All advantages need not be presented in a particular embodiment at the same time. Each feature that is unique compared to the conventional technology, whether alone or in combination with other features, should also be regarded as a separate description of the applicant’s further invention, including the structural and/or concrete realization of such features. Functional concept. Therefore, the foregoing description of the embodiments according to the present invention is only used for illustration and not for the purpose of limiting the present invention defined by the scope of the attached patent application and its equivalents.

1:自行車 2:車架 3:後輪 4:前叉 5:前輪 6:踏板 7:曲柄臂 8:曲柄軸 9:自行車鏈條 10:自行車後撥鏈器 11:後鏈輪 12:前鏈輪 14:底座構件 16:可移動構件 18:導鏈器 18A:內板 18B:外板 19:滑輪本體 19A:導引滑輪本體 19B:張緊滑輪本體 20:滑輪 20A:導引滑輪 20B:張緊滑輪 21:滑輪軸 21A:導引滑輪軸 21B:張緊滑輪軸 22:滑輪移位結構 24:第一移位構件 26:第二移位構件 28:偏壓構件 30:馬達安裝部 32:電池 34:充電埠 36:無線單元 38:阻尼器機構 D1:第一距離 D2:第二距離 L:線性距離 P1:軸向中心平面 PA1:第一樞轉軸線 PA2:第二樞轉軸線 PA3:第三樞轉軸線 PU:滑輪軸線 PU1:第一滑輪軸線 PU2:第二滑輪軸線1: bicycle 2: Frame 3: rear wheel 4: Fork 5: front wheel 6: Pedal 7: Crank arm 8: crankshaft 9: Bicycle chain 10: Bicycle rear derailleur 11: Rear sprocket 12: Front sprocket 14: base member 16: movable member 18: Chain guide 18A: inner panel 18B: Outer panel 19: Pulley body 19A: Guide pulley body 19B: Tension pulley body 20: pulley 20A: Guide pulley 20B: Tension pulley 21: pulley shaft 21A: Guide pulley shaft 21B: Tension pulley shaft 22: pulley shift structure 24: The first displacement member 26: Second displacement member 28: Biasing member 30: Motor mounting part 32: battery 34: Charging port 36: wireless unit 38: Damper mechanism D1: first distance D2: second distance L: linear distance P1: Axial center plane PA1: the first pivot axis PA2: second pivot axis PA3: third pivot axis PU: pulley axis PU1: first pulley axis PU2: second pulley axis

隨著本發明的更完整知曉及其許多伴隨優點藉由參照結合隨附圖式來考量的以下詳細說明變得被更佳地瞭解，本發明的更完整知曉及其許多伴隨優點將會被容易地獲得，其中 [圖1]是併有根據本揭示的自行車後撥鏈器之範例自行車的右側視圖； [圖2]是自行車的示意輪廓； [圖3]是根據本揭示的自行車後撥鏈器的右側立體圖； [圖4]是根據本揭示的自行車後撥鏈器的俯視立體圖； [圖5]是根據本揭示的自行車後撥鏈器的分解圖； [圖6A至圖6C]是根據本揭示的自行車後撥鏈器的不同檔位的右側視圖；及 [圖7]是根據本揭示的自行車後撥鏈器的示意方塊圖。As the more complete knowledge of the present invention and its many accompanying advantages become better understood by referring to the following detailed description considered in conjunction with the accompanying drawings, the more complete knowledge of the present invention and its many accompanying advantages will be readily understood Land acquisition, where [Figure 1] is a right side view of an example bicycle incorporating a bicycle rear derailleur according to the present disclosure; [Figure 2] is the schematic outline of the bicycle; [Figure 3] is a right perspective view of the bicycle rear derailleur according to the present disclosure; [Figure 4] is a top perspective view of the bicycle rear derailleur according to the present disclosure; [Figure 5] is an exploded view of the bicycle rear derailleur according to the present disclosure; [Figures 6A to 6C] are right side views of different gear positions of the bicycle rear derailleur according to the present disclosure; and [Fig. 7] is a schematic block diagram of a bicycle rear derailleur according to the present disclosure.

10:自行車後撥鏈器10: Bicycle rear derailleur

L:線性距離L: linear distance

PA1:第一樞轉軸線PA1: the first pivot axis

PU:滑輪軸線PU: pulley axis

Claims (21)

一種自行車後撥鏈器，包含： 底座構件，其被建構成被附接於自行車車架； 可移動構件，其可相對於該底座構件移動； 導鏈器，其被可樞轉地附接於該可移動構件，以繞著第一樞轉軸線樞轉； 至少一個滑輪，其可繞著滑輪軸線旋轉；及 滑輪移位結構，其包括第一移位構件及第二移位構件，該第一移位構件被可樞轉地附接於該至少一個滑輪以繞著該滑輪軸線樞轉，該第二移位構件被可樞轉地附接於該至少一個滑輪以繞著該滑輪軸線樞轉，其中 該第一移位構件被可樞轉地附接於該導鏈器，以繞著第二樞轉軸線樞轉，且 該第二移位構件被可樞轉地附接於該可移動構件，以繞著第三樞轉軸線樞轉。A bicycle rear derailleur, including: The base member, which is constructed to be attached to the bicycle frame; Movable member, which can move relative to the base member; A chain guide, which is pivotally attached to the movable member to pivot about the first pivot axis; At least one pulley, which can rotate around the pulley axis; and A pulley shifting structure, which includes a first shifting member and a second shifting member, the first shifting member is pivotally attached to the at least one pulley to pivot about the pulley axis, the second shifting member The position member is pivotally attached to the at least one pulley to pivot about the pulley axis, wherein The first displacement member is pivotally attached to the chain guide to pivot about a second pivot axis, and The second displacement member is pivotally attached to the movable member to pivot about the third pivot axis. 如請求項1之自行車後撥鏈器，其中 該滑輪移位結構被建構成回應於該導鏈器相對於該可移動構件的旋轉移動而改變該第一樞轉軸線與該滑輪軸線之間的線性距離。Such as the bicycle rear derailleur of claim 1, where The pulley displacement structure is configured to change the linear distance between the first pivot axis and the pulley axis in response to the rotational movement of the chain guide relative to the movable member. 如請求項1或2之自行車後撥鏈器，其中 偏壓構件被設置在該可移動構件與該第二移位構件之間。Such as the bicycle rear derailleur of claim 1 or 2, where A biasing member is provided between the movable member and the second displacement member. 如請求項3之自行車後撥鏈器，其中 該偏壓構件是扭轉彈簧。Such as the bicycle rear derailleur of claim 3, where The biasing member is a torsion spring. 如請求項4之自行車後撥鏈器，其中 該扭轉彈簧相對於該第三樞轉軸線同軸地設置。Such as the bicycle rear derailleur of claim 4, where The torsion spring is arranged coaxially with respect to the third pivot axis. 如請求項1或2之自行車後撥鏈器，其中 偏壓構件被設置在該導鏈器與該第一移位構件之間。Such as the bicycle rear derailleur of claim 1 or 2, where A biasing member is provided between the chain guide and the first displacement member. 如請求項6之自行車後撥鏈器，其中 該偏壓構件是扭轉彈簧。Such as the bicycle rear derailleur of claim 6, where The biasing member is a torsion spring. 如請求項7之自行車後撥鏈器，其中 該扭轉彈簧相對於該第三樞轉軸線同軸地設置。Such as the bicycle rear derailleur of claim 7, where The torsion spring is arranged coaxially with respect to the third pivot axis. 如請求項1或2之自行車後撥鏈器，其中 該導鏈器包括一對的導鏈板。Such as the bicycle rear derailleur of claim 1 or 2, where The chain guide includes a pair of chain guide plates. 如請求項9之自行車後撥鏈器，其中 該一對的導鏈板包括內板及外板。Such as the bicycle rear derailleur of claim 9, where The pair of chain guide plates includes an inner plate and an outer plate. 如請求項10之自行車後撥鏈器，其中 該第一移位構件被可樞轉地附接於該外板，以繞著該第二樞轉軸線樞轉。Such as the bicycle rear derailleur of claim 10, where The first displacement member is pivotally attached to the outer plate to pivot about the second pivot axis. 如請求項1或2之自行車後撥鏈器，其中 該第一樞轉軸線與該第二樞轉軸線及該第三樞轉軸線平行， 該第一樞轉軸線及該第二樞轉軸線以第一距離隔開， 該第一樞轉軸線及該第三樞轉軸線以第二距離隔開，且 該第二距離大於該第一距離。Such as the bicycle rear derailleur of claim 1 or 2, where The first pivot axis is parallel to the second pivot axis and the third pivot axis, The first pivot axis and the second pivot axis are separated by a first distance, The first pivot axis and the third pivot axis are separated by a second distance, and The second distance is greater than the first distance. 一種自行車後撥鏈器，包含： 底座構件，其被建構成被附接於自行車車架； 可移動構件，其可相對於該底座構件移動； 導鏈器，其被可樞轉地附接於該可移動構件，以繞著樞轉軸線樞轉； 至少一個滑輪，其可繞著滑輪軸線旋轉；及 滑輪移位結構，其被建構成回應於該導鏈器相對於該可移動構件的旋轉移動而改變該樞轉軸線與該滑輪軸線之間的線性距離。A bicycle rear derailleur, including: The base member, which is constructed to be attached to the bicycle frame; Movable member, which can move relative to the base member; A chain guide, which is pivotally attached to the movable member to pivot about a pivot axis; At least one pulley, which can rotate around the pulley axis; and The pulley displacement structure is configured to change the linear distance between the pivot axis and the pulley axis in response to the rotational movement of the chain guide relative to the movable member. 如請求項13之自行車後撥鏈器，其中 該樞轉軸線是第一樞轉軸線， 該滑輪移位結構包括第一移位構件及第二移位構件，該第一移位構件及該第二移位構件被可樞轉地附接於該至少一個滑輪，以繞著該滑輪軸線旋轉， 該第一移位構件被可樞轉地附接於該導鏈器，以繞著第二樞轉軸線樞轉， 該第二移位構件被可樞轉地附接於該可移動構件，以繞著第三樞轉軸線樞轉， 該第一樞轉軸線與該第二樞轉軸線及該第三樞轉軸線平行， 該第一樞轉軸線及該第二樞轉軸線以第一距離隔開， 該第一樞轉軸線及該第三樞轉軸線以第二距離隔開，且 該第二距離大於該第一距離。Such as the bicycle rear derailleur of claim 13, where The pivot axis is the first pivot axis, The pulley shifting structure includes a first shifting member and a second shifting member, the first shifting member and the second shifting member are pivotally attached to the at least one pulley to surround the pulley axis Rotating, The first displacement member is pivotally attached to the chain guide to pivot about the second pivot axis, The second displacement member is pivotally attached to the movable member to pivot about the third pivot axis, The first pivot axis is parallel to the second pivot axis and the third pivot axis, The first pivot axis and the second pivot axis are separated by a first distance, The first pivot axis and the third pivot axis are separated by a second distance, and The second distance is greater than the first distance. 2、13、及14中任一項之自行車後撥鏈器，其中 該自行車後撥鏈器包括阻尼器機構。Bicycle rear derailleur of any one of 2, 13, and 14, in which The bicycle rear derailleur includes a damper mechanism. 2、13、及14中任一項之自行車後撥鏈器，其中 該自行車後撥鏈器包括馬達安裝部。Bicycle rear derailleur of any one of 2, 13, and 14, in which The bicycle rear derailleur includes a motor mounting part. 如請求項16之自行車後撥鏈器，其中 該馬達安裝部被設置在該底座構件處。Such as the bicycle rear derailleur of claim 16, where The motor mounting part is provided at the base member. 2、13、及14中任一項之自行車後撥鏈器，其中 該自行車後撥鏈器包括電池。Bicycle rear derailleur of any one of 2, 13, and 14, in which The bicycle rear derailleur includes a battery. 2、13、及14中任一項之自行車後撥鏈器，其中 該自行車後撥鏈器包括充電埠。Bicycle rear derailleur of any one of 2, 13, and 14, in which The bicycle rear derailleur includes a charging port. 2、13、及14中任一項之自行車後撥鏈器，其中 該自行車後撥鏈器包括無線單元。Bicycle rear derailleur of any one of 2, 13, and 14, in which The bicycle rear derailleur includes a wireless unit. 2、13、及14中任一項之自行車後撥鏈器，其中 該自行車後撥鏈器的該底座構件被直接地耦接於該自行車車架。Bicycle rear derailleur of any one of 2, 13, and 14, in which The base member of the bicycle rear derailleur is directly coupled to the bicycle frame.
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