TWM526541U - Rear gearshift device for bicycle - Google Patents
Rear gearshift device for bicycle Download PDFInfo
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- TWM526541U TWM526541U TW104220351U TW104220351U TWM526541U TW M526541 U TWM526541 U TW M526541U TW 104220351 U TW104220351 U TW 104220351U TW 104220351 U TW104220351 U TW 104220351U TW M526541 U TWM526541 U TW M526541U
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Description
本創作係與自行車後變速器有關;特別是指一種具有穩定鏈條張力功能之自行車後變速器。This creation is related to bicycle rear derailleur; in particular, a bicycle rear derailleur with a stable chain tension function.
一般來說,自行車之後變速器主要包含有一基座、一移動件以及一導鏈器等,該基座係安裝於自行車後端車架靠近後鏈輪處;該移動件通常係透過一連桿組以可活動的方式連結在該基座上;該導鏈器受控制而可在多個鏈輪之間作切換,以引導鏈條於特定鏈輪上運動或引導鏈條進行上下鏈動作。Generally, the bicycle rear transmission mainly includes a base, a moving member, a chain guide, and the like, and the base is mounted on the bicycle rear frame near the rear sprocket; the moving member is usually transmitted through a link set. Attached to the base in a movable manner; the chain guide is controlled to switch between the plurality of sprockets to guide the chain to move on a particular sprocket or to guide the chain to perform the up and down chain action.
其中,該導鏈器通常係以可相對於該移動件旋轉的方式樞接於該移動件上,並且受到偏壓元件的彈性偏壓朝順時針方向轉動(由自行車右側觀之),藉以當鏈條由直徑較大的鏈輪切換至直徑較小的鏈輪時,該導鏈器可提供一收緊該鏈條的張力。Wherein, the chain guide is normally pivotally connected to the moving member in a manner rotatable relative to the moving member, and is rotated in a clockwise direction by the elastic bias of the biasing member (as viewed from the right side of the bicycle), thereby When the chain is switched from a larger diameter sprocket to a smaller diameter sprocket, the chain guide provides a tension to tighten the chain.
然而,當騎士於崎嶇路面騎行自行車(例如行經路面的凸丘或坑洞),而產生顛簸、陡震等情形時,鏈條可能會產生晃動而拉扯導鏈器朝逆時針方向旋轉,使得導鏈器給予鏈條的張力衰減,導致鏈條產生鬆弛的現象,而無法與鏈輪保持穩定的咬合,如此一來,恐導致鏈條無預警地由一鏈輪切換至另一鏈輪,更嚴重者,鏈條可能自鏈輪上脫離,而給予自行車騎士不良的騎乘體驗。However, when the rider rides a bicycle on a rough road (such as a bulge or a pothole on a road surface), causing bumps, steep shocks, etc., the chain may sway and pull the chain guide to rotate counterclockwise, so that the guide chain The tension of the chain is attenuated, causing the chain to slack, and it cannot maintain a stable bite with the sprocket. As a result, the chain may switch from one sprocket to another without warning, and more seriously, the chain It may be detached from the sprocket and give the bicyclist a bad riding experience.
有鑑於此,本創作之目的在於提供一種自行車後變速器,可確保鏈條不易產生鬆弛的現象,而可提升騎行自行車的安全性。In view of this, the purpose of the present invention is to provide a bicycle rear derailleur that ensures that the chain is less prone to slack and enhances the safety of the bicycle.
緣以達成上述目的,本創作所提供之自行車後變速器係設置於一自行車之車架上,該後變速器包括一平行連桿機構、一樞軸、一導鏈器、一擺動限制組件以及一摩擦力施加元件。該平行連桿機構包含有一基座、一連桿組以及一移動件;該基座設置於該車架上;該連桿組樞接於該基座與該移動件之間,以使該移動件可相對於該基座移動;該移動件具有一容室;該樞軸設置於該容室中,且可相對於該移動件樞轉;該導鏈器固定於該樞軸上;該擺動限制組件包含有一第一棘輪、一第二棘輪以及一彈性件,該第一棘輪係以無法相對該樞軸轉動的方式套設於該樞軸上;該第二棘輪係以可相對於該樞軸轉動的方式套設於該樞軸上,且該第二棘輪的棘齒與該第一棘輪的棘齒相對;該彈性件設置於該容室中,其一端抵於該第一棘輪與該第二棘輪的其中之一者,用以維持該第一棘輪與該第二棘輪相互接觸;該摩擦力施加元件設置於該容室中,該摩擦力施加元件用以施予該第二棘輪一轉動摩擦阻力;藉此,當該導鏈器受一作用力而朝第一方向擺動時,將帶動該樞軸以及該第一棘輪朝該第一方向轉動,且該第一棘輪與該第二棘輪的棘齒相互滑脫使該第一棘輪與該第二棘輪可相對旋轉;當該導鏈器受另一作用力而朝相反於該第一方向的一第二方向擺動時,該第一棘輪與該第二棘輪的棘齒相限制使該第一棘輪與該第二棘輪無法相對旋轉。In order to achieve the above object, the bicycle rear derailleur provided by the present invention is disposed on a bicycle frame, the rear derailleur includes a parallel linkage mechanism, a pivot shaft, a chain guide, a swing limiting assembly and a friction. Force application of components. The parallel link mechanism includes a base, a link set and a moving member; the base is disposed on the frame; the link set is pivotally connected between the base and the moving member to enable the movement The member is movable relative to the base; the moving member has a chamber; the pivot is disposed in the chamber and is pivotable relative to the moving member; the chain guide is fixed to the pivot; the swing The restriction assembly includes a first ratchet, a second ratchet and an elastic member, the first ratchet is sleeved on the pivot in a manner that is not pivotable relative to the pivot; the second ratchet is detachable relative to the pivot The shaft rotates on the pivot shaft, and the ratchet teeth of the second ratchet are opposite to the ratchet teeth of the first ratchet; the elastic member is disposed in the chamber, and one end thereof abuts the first ratchet and the One of the second ratchets for maintaining the first ratchet and the second ratchet in contact with each other; the friction applying element is disposed in the chamber, the friction applying element for applying the second ratchet Rotating frictional resistance; thereby, when the chain guide is subjected to a force, it is directed to the first direction Moving the pivot and the first ratchet to rotate in the first direction, and the ratchets of the first ratchet and the second ratchet slip each other to rotate the first ratchet and the second ratchet relative to each other; When the chain guide is oscillated by a further force in a second direction opposite to the first direction, the first ratchet and the ratchet of the second ratchet are constrained to the first ratchet and the second ratchet Cannot rotate relative to each other.
本創作之效果在於,藉由該摩擦力施加元件提供予該擺動限制組件轉動摩擦阻力,以及該擺動限制組件之棘輪的配合,使用上可允許該導鏈器朝第一方向擺動,而在導鏈器朝與第一方向相反方向的第二方向擺動時,則施予一擺動阻力,藉以在騎乘的過程中,該導鏈器可提供自行車鏈條一穩定的張力,使得鏈條不會無預期鬆脫。The effect of the present invention is that the frictional force applying element provides the rotational frictional resistance of the swing limiting component, and the ratcheting of the swinging restricting component can be used to allow the chain guide to swing in the first direction. When the chain oscillates in the second direction opposite to the first direction, a swinging resistance is applied, so that the chain guide can provide a stable tension of the bicycle chain during riding, so that the chain is not unexpected Loose.
為能更清楚地說明本創作,茲舉較佳實施例並配合圖式詳細說明如後,請參圖1至圖2所示,為本創作第一較佳實施例之自行車後變速器100,包括:一包含有基座10、連桿組20以及移動件30的平行連桿機構、一樞軸40、一擺動限制組件50、一摩擦力施加元件60以及一導鏈器70。In order to explain the present invention more clearly, the preferred embodiment will be described in detail with reference to the drawings. Referring to FIG. 1 to FIG. 2, the bicycle rear derailleur 100 of the first preferred embodiment of the present invention includes A parallel link mechanism including a base 10, a link set 20 and a moving member 30, a pivot 40, a swing restricting assembly 50, a friction applying member 60, and a chain guide 70.
該基座10具有一安裝部12,該安裝部12可藉由一螺絲或螺栓等扣件而固定於一自行車的車架後端部靠近鏈輪的一側。其中,該基座10可作為該平行連桿機構的固定桿。The base 10 has a mounting portion 12 that can be fixed to a side of the rear end of a bicycle frame near the sprocket by a fastener such as a screw or a bolt. Wherein, the base 10 can serve as a fixed rod of the parallel linkage mechanism.
該連桿組20包含有二連桿22,該些連桿22的一端係分別樞接於該基座10上;該些連桿22的另一端分別具有一樞孔221。The connecting rod set 20 includes two connecting rods 22, one end of each of the connecting rods 22 is pivotally connected to the base 10, and the other ends of the connecting rods 22 respectively have a pivot hole 221.
該移動件30包含有一主體32以及與該主體32連接的二樞接部34。配合圖2及3所示,該主體32內部具有一容室320,且兩端分別形成有連通該容室320的開口32a以及開口32b,該容室320的內表面32c鄰近該開口32a處形成間隔排列之三凸塊33。該容室320的內表面32c另形成有一環型的凸垣35,該凸垣35朝向該開口32b的表面35a更凸出形成一筒狀部36。其中該移動件30可作為該平行連桿機構的浮桿。該二樞接部34分別與各該連桿22之樞孔221配合,並分別透過定位軸a1、a2樞接固定,藉以使得該移動件30可相對於該基座10在相互平行的平面上移動。The moving member 30 includes a main body 32 and two pivoting portions 34 connected to the main body 32. As shown in FIG. 2 and FIG. 3, the main body 32 has a chamber 320 therein, and two ends are respectively formed with an opening 32a and an opening 32b communicating with the chamber 320. The inner surface 32c of the chamber 320 is formed adjacent to the opening 32a. Three bumps 33 arranged at intervals. The inner surface 32c of the chamber 320 is further formed with a ring-shaped tenon 35 which protrudes toward the surface 35a of the opening 32b to form a cylindrical portion 36. The moving member 30 can serve as a floating rod of the parallel linkage mechanism. The two pivoting portions 34 are respectively engaged with the pivot holes 221 of the connecting rods 22, and are respectively pivotally fixed through the positioning shafts a1 and a2, so that the moving members 30 can be parallel to each other with respect to the base 10 mobile.
該樞軸40之外環面沿軸向依序形成有一圈凸垣42、一環槽44以及一螺紋段46,該樞軸40係自該主體32之開口32a伸入而設置於該主體32之容室320中,並可相對於該主體32樞轉,且該樞軸40之凸垣42係抵於該主體32之凸垣35的另一側表面35b(配合圖3及圖4所示)。此外,於該凸垣42與該側表面35b間更可另外設置一橡膠製或矽膠製的墊片43,用以防止如潤滑油等流體沿樞軸40洩漏,以及具有防水防塵之密封效果。The outer surface of the pivot shaft 40 is formed with a ring of cams 42 , a ring groove 44 and a threaded portion 46 in the axial direction. The pivot 40 extends from the opening 32 a of the main body 32 and is disposed on the main body 32 . The chamber 320 is pivotable relative to the main body 32, and the tenon 42 of the pivot 40 is abutted against the other side surface 35b of the tenon 35 of the main body 32 (shown in FIGS. 3 and 4). . In addition, a rubber or silicone gasket 43 may be additionally disposed between the tenon 42 and the side surface 35b to prevent leakage of fluid such as lubricating oil along the pivot 40, and to have a waterproof and dustproof sealing effect.
該擺動限制組件50包含有一第一彈性件S1、第一棘輪52、一C型環C以及一第二棘輪54。該第一彈性件S1係套於該樞軸40上,且一端抵於該凸垣35的側表面35b。該第一棘輪52係以無法相對於該樞軸40轉動的方式套設於該樞軸40上,且該第一棘輪52位於該凸垣42以及該環槽44之間,該第一棘輪52的一端面52a抵靠於該第一彈性件S1的另一端,受該第一彈性件S1的彈力推頂;該第一棘輪52的內環面突出形成有凸環521。於本實施例中,該第一彈性件S1係以壓縮彈簧為例,而於其他實際實施上,亦可由其他形式的彈性件代替之。The swing limiting assembly 50 includes a first elastic member S1, a first ratchet 52, a C-ring C, and a second ratchet 54. The first elastic member S1 is sleeved on the pivot 40 and has one end abutting against the side surface 35b of the tenon 35. The first ratchet 52 is sleeved on the pivot 40 so as not to be rotatable relative to the pivot 40, and the first ratchet 52 is located between the tenon 42 and the annular groove 44. The first ratchet 52 The one end surface 52a abuts against the other end of the first elastic member S1 and is pushed by the elastic force of the first elastic member S1; the inner annular surface of the first ratchet 52 protrudes to form the convex ring 521. In this embodiment, the first elastic member S1 is exemplified by a compression spring, and in other practical implementations, other types of elastic members may be substituted.
於本實施例中,該第一棘輪52的內環面具有兩平面,而該樞軸40的外環面具有與該第一棘輪52相對的兩個平面,以使得該第一棘輪52套設於該樞軸40上時,兩兩相對應的平面抵接,進而使得該第一棘輪52不會相對於該樞軸40轉動。於其他實際實施中,亦可在第一棘輪的內環面形成有一凹槽,於樞軸外環面沿軸向形成有一凸肋,使得第一棘輪套設於樞軸時,凹槽與凸肋相卡合,藉以限制第一棘輪與樞軸的相對轉動。In this embodiment, the inner annular surface of the first ratchet 52 has two planes, and the outer annular surface of the pivot 40 has two planes opposite to the first ratchet 52, so that the first ratchet 52 is sleeved. On the pivot 40, the corresponding planes abut each other, so that the first ratchet 52 does not rotate relative to the pivot 40. In other practical implementations, a groove may be formed on the inner annular surface of the first ratchet, and a convex rib is formed on the outer circumferential surface of the pivot shaft so that the first ratchet is sleeved on the pivot, the groove and the convex The ribs are engaged to limit the relative rotation of the first ratchet and the pivot.
該C型環C係卡扣於該樞軸40的環槽44上,並可抵於該第一棘輪52的凸環521上,以防止該第一棘輪52沿該樞軸40的軸向方向滑脫;或可抵靠於第二棘輪54上,以限制第二棘輪54於樞軸40之軸向方向的位移。該第二棘輪54係以可相對於該樞軸40轉動的方式套設於該樞軸40上,且位於該環槽44背離該凸垣42的一側,該第二棘輪54的棘齒與該第一棘輪52的棘齒相面對。其中,受該第一彈性件S1的彈力推抵,可維持該第一棘輪52與該第二棘輪54相互接觸。The C-ring C is fastened to the annular groove 44 of the pivot 40 and can be abutted against the convex ring 521 of the first ratchet 52 to prevent the first ratchet 52 from being axially along the pivot 40. Slip off; or can abut against the second ratchet 54 to limit the displacement of the second ratchet 54 in the axial direction of the pivot 40. The second ratchet 54 is sleeved on the pivot 40 in a manner rotatable relative to the pivot 40, and is located on a side of the ring groove 44 facing away from the tenon 42. The ratchet of the second ratchet 54 The ratchets of the first ratchet 52 face each other. The first ratchet 52 and the second ratchet 54 are maintained in contact with each other by the elastic force of the first elastic member S1.
該摩擦力施加元件60係套設於該樞軸40上,並設置於該容室320當中,於本實施例當中,該摩擦力施加元件60依據組裝順序依據包含有一摩擦片62、一軸襯套64、一墊圈66以及一螺帽68。其中:The friction applying member 60 is sleeved on the pivot 40 and disposed in the chamber 320. In the embodiment, the friction applying member 60 includes a friction plate 62 and a bushing according to the assembly sequence. 64. A washer 66 and a nut 68. among them:
該摩擦片62係呈環狀,其外環面(外周面)形成有間隔排列之三個凹槽622,該些凹槽622係為與該移動件30之主體32之該些凸塊33相對應的大小,因此,於該摩擦片62與該主體32結合後,該些凸塊33各別對應容置於該些凹槽622當中,藉以避免該摩擦片62相對於該移動件30轉動。其中,該摩擦片62係抵於該第二棘輪54之一端面54a上,且可沿該樞軸40的軸線方向上施予該第二棘輪54一朝向該第一棘輪52的壓力(作用力),以及施予該第二棘輪54一轉動摩擦阻力以限制該第二棘輪54相對於該主體32轉動。另外,於該摩擦片62朝向該第二棘輪54的端面上,形成有一環槽622;一O型環61係設置於該環槽622中,且位於該摩擦片62與該第二棘輪54之間,用以額外提升對於該第二棘輪54的轉動摩擦阻力。The friction plate 62 has an annular shape, and the outer annular surface (outer circumferential surface) is formed with three grooves 622 arranged at intervals, and the grooves 622 are formed with the protrusions 33 of the main body 32 of the moving member 30. Correspondingly, the bumps 33 are respectively accommodated in the recesses 622 to prevent the friction plate 62 from rotating relative to the moving member 30 after the friction plate 62 is combined with the main body 32. The friction plate 62 abuts against one end surface 54a of the second ratchet 54 and can apply the pressure of the second ratchet 54 toward the first ratchet 52 along the axial direction of the pivot 40. And applying a second rotational frictional resistance to the second ratchet 54 to limit rotation of the second ratchet 54 relative to the body 32. In addition, a ring groove 622 is formed on the end surface of the friction plate 62 facing the second ratchet 54; an O-ring 61 is disposed in the ring groove 622, and is located between the friction plate 62 and the second ratchet 54 In between, to additionally increase the rotational frictional resistance to the second ratchet 54.
該軸襯套64具有相連的套筒部642以及環部644;該套筒部642係位於樞軸40外環面以及摩擦片62內環面之間;該環部644的一端面係貼靠於該摩擦片62的另一端面上。該軸襯套64為具有低摩擦係數的材質所製成,用以減少樞軸40與摩擦片62之間的摩擦損失。The shaft bushing 64 has an associated sleeve portion 642 and a ring portion 644; the sleeve portion 642 is located between the outer ring surface of the pivot 40 and the inner ring surface of the friction plate 62; one end surface of the ring portion 644 is abutted On the other end surface of the friction plate 62. The shaft bushing 64 is made of a material having a low coefficient of friction to reduce frictional loss between the pivot 40 and the friction plate 62.
該墊圈66套於該樞軸40後,再將該螺帽68旋入樞軸40的螺紋段46,藉以依序推抵並迫緊該墊圈66、該軸襯套64、該摩擦片62以及該第二棘輪54,藉以在樞軸40的軸線方向上施予該第二棘輪54朝該第一棘輪52的該壓力,以及施予該第二棘輪之該轉動摩擦阻力;並且配合該第一彈性件S1提供一彈力推頂該第一棘輪52,以產生自第一棘輪52朝向該第二棘輪54的壓力,藉以使得該第一棘輪52與該第二棘輪54間的棘齒相接觸。另一提的是,於一實施例中,第一彈性件亦可以提供彈力推頂第二棘輪,以產生自第二棘輪朝向第一棘輪的壓力,藉以使得第二棘輪與第一棘輪的棘齒保持接觸,而不以上述實施例為限。After the washer 66 is sleeved on the pivot 40, the nut 68 is screwed into the threaded section 46 of the pivot 40, thereby sequentially pushing and pressing the washer 66, the bushing 64, the friction plate 62, and The second ratchet 54 is configured to apply the second ratchet 54 to the first ratchet 52 in the axial direction of the pivot 40, and to apply the rotational frictional resistance of the second ratchet; and cooperate with the first The elastic member S1 provides a spring force to push the first ratchet 52 to generate a pressure from the first ratchet 52 toward the second ratchet 54 to thereby contact the ratchet between the first ratchet 52 and the second ratchet 54. . In another embodiment, the first elastic member may also provide a spring force to push the second ratchet to generate pressure from the second ratchet toward the first ratchet, thereby making the second ratchet and the first ratchet The ratchets remain in contact and are not limited to the above embodiments.
其中,該螺帽68向內旋入該樞軸40螺紋段46的深淺,可依照使用者所欲施加在該第二棘輪54的壓力大小自由調整,若該螺帽68旋入較深,則施加於第二棘輪54的壓力較大,第二棘輪54與第一棘輪52間的棘齒嚙合更緊密、咬合力較強;反之,若該螺帽68旋入較淺,則施加於第二棘輪54的壓力較小,第二棘輪54與第一棘輪52間棘齒嚙合相對較鬆、咬合力較弱。The nut 68 is screwed inwardly into the depth of the threaded portion 46 of the pivot 40, and can be freely adjusted according to the pressure applied by the user to the second ratchet 54. If the nut 68 is screwed deeper, The pressure applied to the second ratchet 54 is relatively large, and the ratchet between the second ratchet 54 and the first ratchet 52 is more tightly engaged and the biting force is stronger; otherwise, if the nut 68 is screwed in, it is applied to the second The pressure of the ratchet 54 is small, and the ratcheting of the second ratchet 54 and the first ratchet 52 is relatively loose and the bite force is weak.
接著,再將一端蓋80鎖設於該主體32之開口32a,以封閉該開口32a,藉以防止如外在的沙塵、水氣、泥水等異物侵入該主體32內。Then, the end cap 80 is locked to the opening 32a of the main body 32 to close the opening 32a, thereby preventing foreign matter such as external dust, moisture, muddy water from entering the main body 32.
該導鏈器70包含有一第一擺臂72、一第二擺臂74、一導輪76以及一張力輪78。該第一擺臂72與該第二擺臂74係並排固定設置;該導輪76及該張力輪78係分別以可旋轉的方式樞設於第一、第二擺臂72、74之間,並且受該二擺臂的支撐。該第一擺臂72具有一穿孔722以及環列於該穿孔722周圍的複數定位孔724。組裝時,係透過一螺栓B1之螺柱穿過該穿孔722並旋入該樞軸40內環面的一螺紋段40a,該螺栓B1之頭部抵於該第一擺臂72之側面,使得該第一擺臂72固定於該樞軸40上,進而使得該撥鏈器70與該樞軸40成為一整體而可同步轉動。The chain guide 70 includes a first swing arm 72, a second swing arm 74, a guide wheel 76 and a force wheel 78. The first swing arm 72 and the second swing arm 74 are arranged side by side; the guide wheel 76 and the tension wheel 78 are respectively pivotally disposed between the first and second swing arms 72, 74. And supported by the two swing arms. The first swing arm 72 has a through hole 722 and a plurality of positioning holes 724 arranged around the through hole 722. When assembled, the studs of the bolts B1 pass through the through holes 722 and are screwed into a threaded section 40a of the inner ring surface of the pivot 40. The head of the bolt B1 abuts against the side of the first swing arm 72, so that The first swing arm 72 is fixed to the pivot 40, so that the derailleur 70 and the pivot 40 are integrated and can rotate synchronously.
另外,更有一第二彈性件S2設置於該主體32內,並套於該筒狀部36的外環面,該第二彈性件S2具有兩自由端部S21、S22,其中一該自由端部S21係***固定於該凸垣35表面35a的一凹槽(圖未示)中;另一該自由端部S22係***其中一該定位孔724中。藉此,該第二彈性件S2可提供該導鏈器70一彈性偏壓力,使得該導鏈器70朝逆時針或順時針方向旋轉。於本實施例中,該第二彈性件S2係以扭轉彈簧為例,而於其他實際實施上,亦可由其他彈性件代替之。In addition, a second elastic member S2 is disposed in the main body 32 and sleeved on the outer annular surface of the cylindrical portion 36. The second elastic member S2 has two free ends S21 and S22, one of the free ends. The S21 is inserted into a recess (not shown) fixed to the surface 35a of the tenon 35; the other free end S22 is inserted into one of the positioning holes 724. Thereby, the second elastic member S2 can provide a spring biasing force of the chain guide 70, so that the chain guide 70 rotates counterclockwise or clockwise. In this embodiment, the second elastic member S2 is exemplified by a torsion spring, and in other practical implementations, other elastic members may be substituted.
值得一提的是,由於該些定位孔724係呈環狀排列於該穿孔722的不同徑向延伸線上,因此,可藉由將第二彈性件S2***不同的定位孔724,來改變該導鏈器70相對於該移動件30的初始角度位置。舉例來說,若該第二彈性件S2的自由端部S22係插於最右側之定位孔724時,該導鏈器70概呈指向六點鐘方向;若該第二彈性件S2的自由端部S22係插於最左側之定位孔時724’,該導鏈器70概呈指向八點鐘方向。如此一來,可因應自行車不同齒盤的直徑、齒盤的數量、鏈條的長度或是所需施加於導鏈器的偏壓強度,依據使用需求由使用者選擇調整。It should be noted that, since the positioning holes 724 are annularly arranged on different radial extension lines of the through hole 722, the second elastic member S2 can be changed by inserting the second elastic member S2 into the different positioning holes 724. The initial angular position of the chain 70 relative to the moving member 30. For example, if the free end portion S22 of the second elastic member S2 is inserted into the rightmost positioning hole 724, the chain guide 70 is directed to the six o'clock direction; if the free end of the second elastic member S2 When the portion S22 is inserted into the leftmost positioning hole 724', the chain guide 70 is directed to the eight o'clock direction. In this way, depending on the diameter of the different toothed discs of the bicycle, the number of the toothed discs, the length of the chain or the bias strength required to be applied to the chain guide, the user can select the adjustment according to the use requirements.
參圖5所示,為本創作後變速器100隱藏移動件30、第二彈性件S2的局部放大圖,請配合圖4及圖5所示,可以理解的是,當自行車由直徑較大鏈輪切換為直徑較小的鏈輪時,該導鏈器70受該第二彈性件S2的作用力時,可朝順時針方向A1(第一方向)擺動,而收緊鬆弛的鏈條。其中,在該導鏈器70朝順時針方向A1擺動時,將帶動該樞軸40以及該第一棘輪52朝順時針方向A1轉動,且該第一棘輪52與該第二棘輪54的棘齒相互滑脫使該第一棘輪52與該第二棘輪54可相對旋轉,更詳而言之,係透過樞軸40帶動該第一棘輪52的棘齒斜面沿該第二棘輪54的棘齒斜面順向滑動,且於第一棘輪52的棘齒沿斜面逐漸滑動時,由於第二棘輪54一側並無壓縮空間,因此該第一棘輪52係沿軸向朝第一彈性件S1運動而壓縮該第一彈性件S1,且當第一棘輪52的棘齒斜面滑動至第二棘輪54的棘齒斜面終點後,該第一彈性件S1復沿軸向將第一棘輪52推向第二棘輪54,使第一棘輪52的棘齒與第二棘輪54之另一棘齒再度嚙合。As shown in FIG. 5, a partial enlarged view of the hidden moving member 30 and the second elastic member S2 of the rear derailleur 100 is shown. Please refer to FIG. 4 and FIG. 5, it can be understood that when the bicycle is made of a larger diameter sprocket. When switching to a sprocket having a small diameter, the chain guide 70 can swing in the clockwise direction A1 (first direction) by the urging force of the second elastic member S2 to tighten the slack chain. When the chain guide 70 swings in the clockwise direction A1, the pivot 40 and the first ratchet 52 are rotated in the clockwise direction A1, and the first ratchet 52 and the second ratchet 54 are ratcheted. The first ratchet 52 and the second ratchet 54 are relatively rotatable relative to each other, and more specifically, the ratchet bevel of the first ratchet 52 is driven along the ratchet bevel of the second ratchet 54 through the pivot 40 When sliding in the forward direction, and when the ratchet of the first ratchet 52 gradually slides along the inclined surface, since the second ratchet 54 has no compression space on one side, the first ratchet 52 is compressed in the axial direction toward the first elastic member S1 to be compressed. The first elastic member S1, and when the ratchet slope of the first ratchet 52 slides to the end of the ratchet ramp of the second ratchet 54, the first elastic member S1 axially pushes the first ratchet 52 toward the second ratchet 54. The ratchet of the first ratchet 52 is again engaged with the other ratchet of the second ratchet 54.
值得一提的是,由於第一棘輪52與第二棘輪54之間的棘齒設計,當該導鏈器70受另一作用力(例如自行車騎行於崎嶇路面產生顛簸、陡震等情形時,鏈條產生晃動而拉扯導鏈器70的作用力)而朝逆時針方向(第二方向)A2擺動時,該第一棘輪52與該第二棘輪54的棘齒相限制,使該第一棘輪52與該第二棘輪54無法相對旋轉。並且配合將摩擦力施加元件60所施予第二棘輪54的壓力及轉動摩擦阻力作適當的設計,例如,將摩擦力施加元件60施予第二棘輪54的作用力調整為略大於前述鏈條拉扯導鏈器70的作用力,使得第二棘輪54無法克服與摩擦片62之間的最大靜摩擦力,而不會產生相對的轉動,就可確保導鏈器70受到第一、第二棘輪棘齒咬死的效果,不會朝逆時針方向A2樞擺,進而確保鏈條不會產生非預期的鬆弛。It is worth mentioning that due to the ratchet design between the first ratchet 52 and the second ratchet 54, when the chain guide 70 is subjected to another force (for example, when the bicycle rides on a rough road surface, bumps, sharp earthquakes, etc.) When the chain swings to pull the force of the chain guide 70 and swings in the counterclockwise direction (second direction) A2, the first ratchet 52 and the ratchet of the second ratchet 54 are restrained, so that the first ratchet 52 It is not rotatable relative to the second ratchet 54. And the pressure and the rotational frictional resistance of the second ratchet 54 applied by the frictional force applying member 60 are appropriately designed. For example, the force applied by the friction applying member 60 to the second ratchet 54 is adjusted to be slightly larger than the aforementioned chain pulling. The force of the chain guide 70 prevents the second ratchet 54 from overcoming the maximum static friction with the friction plate 62 without causing relative rotation, thereby ensuring that the chain guide 70 is subjected to the first and second ratchet ratchets. The effect of seizure does not pivot in the counterclockwise direction A2, thus ensuring that the chain does not produce unintended slack.
如此一來,本創作的自行車後變速器100透過擺動限制組件50與摩擦力施加元件60的作用,可確保導鏈器70不會朝逆時針方向A2擺動,進而促使導鏈器70的張力輪78時刻提供足夠的張力予鏈條,使鏈條穩定地保持於收緊的狀態,以及免除了鏈條無預期跳脫鏈輪的風險。In this way, the bicycle rear derailleur 100 of the present invention can ensure that the chain guide 70 does not swing in the counterclockwise direction A2 through the action of the swing limiting assembly 50 and the friction applying member 60, thereby causing the tension wheel 78 of the chain guide 70 to act. Provide sufficient tension to the chain at all times to keep the chain in a stable state and to eliminate the risk of the chain not being expected to jump off the sprocket.
另外,值得注意的是,前述摩擦力施加元件60所施予第二棘輪54的作用力必須小於一預設值,藉以當自行車鏈條由直徑較小的鏈輪切換至直徑較大的鏈輪時,導鏈器70所受之鏈條收緊的作用力,足以一併帶動樞軸40、第一棘輪52以及第二棘輪54朝逆時針方向A2轉動,並克服第二棘輪54以及摩擦片62之間的最大靜摩擦力而朝逆時針方向A2樞擺,以維持給予鏈條適當的張力。其中,前述之預設值須依據實際實施之自行車的尺寸、鏈條重量等種種因素而定,於此容不詳述。In addition, it is worth noting that the force applied by the friction applying element 60 to the second ratchet 54 must be less than a predetermined value, so that when the bicycle chain is switched from a smaller diameter sprocket to a larger diameter sprocket. The force that the chain guide 70 is tightened by the chain guide 70 is sufficient to rotate the pivot shaft 40, the first ratchet 52 and the second ratchet 54 in the counterclockwise direction A2, and overcome the second ratchet 54 and the friction plate 62. The maximum static friction between them is pivoted in the counterclockwise direction A2 to maintain the proper tension applied to the chain. The foregoing preset values are determined according to various factors such as the size of the bicycle actually implemented, the weight of the chain, and the like, and are not described in detail herein.
請參閱圖6至圖8所示,為本創作第二較佳實施例之自行車後變速器200,其具有與第一實施例之自行車後變速器100相同之基座10、連桿組20、移動件30以及導鏈器70,因此,於本實施例中所提到的基座、連桿組、移動件以及導鏈器請參考前述實施例的說明。另外,本實施例之後變速器200亦具有一樞軸240、一擺動限制組件250、一摩擦力施加元件260。其中:Referring to FIGS. 6-8, the bicycle rear derailleur 200 of the second preferred embodiment of the present invention has the same base 10, link set 20, and moving parts as the bicycle rear derailleur 100 of the first embodiment. 30 and the chain guide 70, therefore, the base, the link set, the moving member and the chain guide mentioned in the embodiment are referred to the description of the foregoing embodiment. In addition, the transmission 200 of the present embodiment also has a pivot 240, a swing limiting assembly 250, and a friction applying member 260. among them:
該樞軸240之外環面沿軸向依序形成有一圈凸垣242以及一環槽244,且於凸垣242與環槽244之間另外形成有一凸肋246。該樞軸240係由移動件30之開口32a伸入而設置於該主體32中,並可相對於該主體32樞轉,且該樞軸240之凸垣242係抵於該主體32之凸垣35側表面35b。A plurality of annular ridges 242 and a ring groove 244 are formed in the outer circumferential surface of the pivot shaft 240, and a rib 246 is additionally formed between the tenon 242 and the annular groove 244. The pivot 240 is inserted into the main body 32 by the opening 32a of the moving member 30, and is pivotable relative to the main body 32, and the tenon 242 of the pivot 240 is pressed against the tenon of the main body 32. 35 side surface 35b.
該擺動限制組件250包含有一第一彈性件T1、一第一棘輪252以及一第二棘輪254。該第一彈性件T1係套於該樞軸240上,且一端抵於該凸垣35的側表面35b。該第一棘輪252的內環面沿軸向形成有一道缺槽(圖未示),於該第一棘輪252套設於該樞軸240上而位於該凸垣242與該環槽244之間時,該缺槽與該凸肋246相卡合,以使得該第一棘輪252固定於該樞軸240上,而不會相對於該樞軸240轉動;該第一棘輪252的一側表面252a抵靠於該第一彈性件T1的另一端,受該第一彈性件T1的彈力推頂。於本實施例中,該第一彈性件T1係以壓縮彈簧為例,而於其他實際實施上,亦可由其他形式的彈性件代替之。The swing limiting assembly 250 includes a first elastic member T1, a first ratchet 252, and a second ratchet 254. The first elastic member T1 is sleeved on the pivot 240 and has one end abutting against the side surface 35b of the tenon 35. The inner ring surface of the first ratchet 252 is formed with a notch (not shown) in the axial direction. The first ratchet 252 is sleeved on the pivot 240 and located between the tenon 242 and the ring groove 244. The notch engages with the rib 246 such that the first ratchet 252 is fixed to the pivot 240 without rotating relative to the pivot 240; a side surface 252a of the first ratchet 252 Abutting against the other end of the first elastic member T1, it is pushed by the elastic force of the first elastic member T1. In this embodiment, the first elastic member T1 is exemplified by a compression spring, and in other practical implementations, other types of elastic members may be substituted.
該第二棘輪254係以可相對於該樞軸240轉動的方式套設於該樞軸240上,且該第二棘輪254的棘齒與該第一棘輪252的棘齒相嚙合。The second ratchet 254 is sleeved on the pivot 240 so as to be rotatable relative to the pivot 240, and the ratchet of the second ratchet 254 is engaged with the ratchet of the first ratchet 252.
該摩擦力施加元件260包含有一摩擦片262、一軸襯套264、一固定環266、一第二彈性件T2以及一調整鈕268。其中:The friction applying member 260 includes a friction plate 262, a shaft bushing 264, a fixing ring 266, a second elastic member T2, and an adjusting button 268. among them:
該摩擦片262係呈環狀,其外環面形成有間隔排列之三個凹槽262a,該些凹槽262a係為與該移動件30之主體32之該些凸塊33相對應,因此,於該摩擦片262與該主體32結合後,使得該些凸塊33各別容置於該些凹槽262a當中,藉以避免該摩擦片262相對於該移動件30轉動。其中,該摩擦片262係提供該第二棘輪254一轉動的摩擦力。The friction plate 262 has an annular shape, and the outer annular surface is formed with three grooves 262a spaced apart from each other. The grooves 262a correspond to the protrusions 33 of the main body 32 of the moving member 30, and therefore, After the friction plate 262 is combined with the main body 32, the protrusions 33 are respectively accommodated in the grooves 262a to prevent the friction plate 262 from rotating relative to the moving member 30. The friction plate 262 provides a frictional force for the rotation of the second ratchet 254.
該軸襯套264具有相連的套筒部264a以及環部264b;該套筒部264a係位於樞軸240外環面以及摩擦片262內環面之間;該環部264b的一端面係貼靠於該摩擦片262的另一端面上。該軸襯套264為具有低摩擦係數的材質所製成,用以減少樞軸240與摩擦片262之間的摩擦損失。The shaft bushing 264 has an associated sleeve portion 264a and a ring portion 264b; the sleeve portion 264a is located between the outer ring surface of the pivot 240 and the inner ring surface of the friction plate 262; an end surface of the ring portion 264b is abutted On the other end surface of the friction plate 262. The shaft bushing 264 is made of a material having a low coefficient of friction to reduce frictional loss between the pivot 240 and the friction plate 262.
該固定環266上具有三個穿孔266a,該些穿孔266a分別與該主體32的螺孔321對齊後,再分別以一扣件鎖入固定,以將該固定環266固定於該主體32的開口32a處;另外,該固定環266的內環面形成有螺紋段266b。The fixing ring 266 has three through holes 266a, and the through holes 266a are respectively aligned with the screw holes 321 of the main body 32, and then locked and fixed by a fastener to fix the fixing ring 266 to the opening of the main body 32. 32a; in addition, the inner annular surface of the retaining ring 266 is formed with a threaded section 266b.
該第二彈性件T2係套於該樞軸240的一端,且一端抵於該軸襯套264之環部264b;該調整鈕268係以其圓柱螺紋段鎖入該固定環266的螺紋段266b,並且該調整鈕268的一端面抵於該第二彈性件T2的另一端。其中,該調整鈕268旋入該固定環266的深淺,決定了施加於該軸襯套264、該摩擦片262以及該第二棘輪254的壓力,例如若該調整鈕268旋入較深,則施加於該第二棘輪254的壓力較大,第二棘輪254與第一棘輪252之間的棘齒嚙合更緊密、咬合力較強;反之,若該調整鈕268旋入較淺,則施加於該第二棘輪254的壓力較小,第二棘輪254與第一棘輪252之間的棘齒嚙合相對較鬆、咬合力較弱。於本實施例中,該第二彈性件T2係以壓縮彈簧為例,而於其他實際實施上,亦可由其他彈性件代替之。The second elastic member T2 is sleeved on one end of the pivot shaft 240, and one end is abutted against the ring portion 264b of the shaft bushing 264; the adjusting button 268 is locked with the cylindrical thread portion thereof into the thread segment 266b of the fixing ring 266. And one end surface of the adjusting button 268 abuts against the other end of the second elastic member T2. The adjusting button 268 is screwed into the depth of the fixing ring 266, and determines the pressure applied to the shaft bushing 264, the friction plate 262 and the second ratchet 254. For example, if the adjusting button 268 is screwed deeper, The pressure applied to the second ratchet 254 is relatively large, and the ratchet teeth between the second ratchet 254 and the first ratchet 252 are more tightly engaged and the biting force is stronger; otherwise, if the adjusting button 268 is screwed in, it is applied to The pressure of the second ratchet 254 is small, and the ratcheting engagement between the second ratchet 254 and the first ratchet 252 is relatively loose and the bite force is weak. In this embodiment, the second elastic member T2 is exemplified by a compression spring, and in other practical implementations, it may be replaced by other elastic members.
其中,本實施例之第一棘輪252、第二棘輪254與該樞軸240以及該導鏈器70之間的配合及作動方式與前述實施例大致相同,且同樣可以達到允許導鏈器朝順時針方向擺動,以收緊鏈條;以及防止導鏈器非預期地朝逆時針方向擺動,而可避免導鏈器施予鏈條的張力減弱,導致鏈條鬆脫。The manner of cooperation and actuation between the first ratchet 252 and the second ratchet 254 of the embodiment and the pivot 240 and the chain guide 70 is substantially the same as that of the previous embodiment, and the guide chain can be allowed to be oriented. The clockwise direction is oscillated to tighten the chain; and the chain guide is prevented from unintendedly oscillating in a counterclockwise direction, and the tension of the chain guide to the chain is prevented from being weakened, resulting in loosening of the chain.
值得一提的是,上述兩實施例之自行車後變速器的導鏈器係採後擺式的設計,亦即,透過其第一棘輪與第二棘輪之間棘齒齒向的設計,第一棘輪可相對於第二棘輪朝順時針方向滑脫,進而使得導鏈器可朝順時針方向擺動(如同朝自行車後方擺動)而收緊鏈條。而於其他實際實施上,本創作之自行車後變速器只要改變部分構件的方向,其導鏈器亦可改變成採用前擺式的設計,簡述如後,例如:改變第一棘輪與第二棘輪之間棘齒的齒向設計,使其齒向相反於前述之實施例,以使得第一棘輪可相對於第二棘輪朝逆時針方向滑脫,如此一來,導鏈器便可朝逆時針方向擺動(如同朝自行車前方擺動)而同樣可達到收緊鏈條的效果,而且於相反方向仍是會提供該導鏈器一擺動阻力,而同樣具有避免鏈條有非預期性鬆弛的功效。It is worth mentioning that the chain guide of the bicycle rear derailleur of the above two embodiments is of a rear swing type design, that is, a ratchet tooth design through the first ratchet and the second ratchet, the first ratchet The slider can be slid in a clockwise direction relative to the second ratchet, thereby allowing the chain guide to swing in a clockwise direction (like swinging toward the rear of the bicycle) to tighten the chain. In other practical implementations, the bicycle rear derailleur of the present invention can change the direction of a part of the component, and the chain guide can also be changed into a front swing type design, for example, after changing, for example, changing between the first ratchet and the second ratchet The toothing of the ratchet is designed such that its tooth direction is opposite to that of the previous embodiment such that the first ratchet can slide counterclockwise relative to the second ratchet, so that the chain guide can swing counterclockwise The effect of tightening the chain is also achieved (as if swaying in front of the bicycle), and the chain guide is still provided with a swinging resistance in the opposite direction, and also has the effect of avoiding unintended slack of the chain.
值得一提的是,施於第二棘輪轉動摩擦力的方式並不以沿樞軸的軸線方向施予第二棘輪一朝向第一棘輪的壓力為限,亦可以是施予第一棘輪一朝向第二棘輪的壓力,以使第二棘輪產生轉動摩擦力,而不以上述實施例為唯一具體實施方式。It is worth mentioning that the manner of applying the second ratcheting frictional force is not limited to the pressure of the second ratchet toward the first ratchet in the direction of the axis of the pivot, or the first ratchet may be applied. The pressure of the second ratchet causes the second ratchet to generate rotational friction without being the only embodiment of the above embodiment.
再一提的是,本創作的摩擦力施加元件主要是用來提供第二棘輪一轉動的摩擦力,除上述結構外,亦可以是單純由一個摩擦片或一個設置於主體內部之容室的摩擦力施加結構或是一個螺栓等,以一個或多個構件直接抵於該第二棘輪上的方式提供第二棘輪轉動摩擦力,而不以上述所提供的實施例為限。It is to be noted that the friction applying element of the present invention is mainly used for providing the frictional force of the second ratchet wheel. In addition to the above structure, it may be simply a friction plate or a chamber disposed inside the body. The friction applying structure or a bolt or the like provides the second ratcheting rotational friction in such a manner that one or more members directly abut against the second ratchet, without being limited to the embodiment provided above.
另一提的是,上述實施例是以第一彈性件施予第一棘輪朝向第二棘輪的彈力,以維持第二棘輪與第一棘輪相互接觸。而於其他的實際實施上,亦可以設置有一端抵於第二棘輪的彈性件,並透過該彈性件施力於該第二棘輪上,用以維持第二棘輪與第一棘輪相互接觸,而不以前述實施例為限。In addition, in the above embodiment, the elastic force of the first ratchet toward the second ratchet is applied by the first elastic member to maintain the second ratchet and the first ratchet in contact with each other. In other practical implementations, an elastic member having an end against the second ratchet may be disposed, and the elastic member is biased on the second ratchet to maintain the second ratchet and the first ratchet in contact with each other. It is not limited to the foregoing embodiments.
以上所述僅為本創作較佳可行實施例而已,舉凡應用本創作說明書及申請專利範圍所為之等效變化,理應包含在本創作之專利範圍內。The above is only a preferred embodiment of the present invention, and equivalent changes to the scope of the present application and the scope of the patent application are intended to be included in the scope of the present patent.
[本創作]
100‧‧‧自行車後變速器
10‧‧‧基座
12‧‧‧安裝部
20‧‧‧連桿組
22‧‧‧連桿
221‧‧‧樞孔
30‧‧‧移動件
32‧‧‧主體
32a‧‧‧開口
32b‧‧‧開口
32c‧‧‧內表面
33‧‧‧凸塊
34‧‧‧樞接部
35‧‧‧凸垣
35a‧‧‧表面
35b‧‧‧表面
36‧‧‧筒狀部
320‧‧‧容室
40‧‧‧樞軸
42‧‧‧凸垣
43‧‧‧墊片
44‧‧‧環槽
46‧‧‧螺紋段
40a‧‧‧螺紋段
50‧‧‧擺動限制組件
S1‧‧‧第一彈性件
C‧‧‧C型環
52‧‧‧第一棘輪
52a‧‧‧端面
521‧‧‧凸環
54‧‧‧第二棘輪
54a‧‧‧端面
60‧‧‧摩擦力施加元件
61‧‧‧O型環
62‧‧‧摩擦片
622‧‧‧凹槽
64‧‧‧軸襯套
642‧‧‧套筒部
644‧‧‧環部
66‧‧‧墊圈
68‧‧‧螺帽
70‧‧‧導鏈器
72‧‧‧第一擺臂
722‧‧‧穿孔
724‧‧‧定位孔
724’‧‧‧定位孔
74‧‧‧第二擺臂
76‧‧‧導輪
78‧‧‧張力輪
80‧‧‧端蓋
a1、a2‧‧‧定位軸
A1‧‧‧順時針方向
A2‧‧‧逆時針方向
B1‧‧‧螺栓
S2‧‧‧第二彈性件
200‧‧‧自行車後變速器
240‧‧‧樞軸
242‧‧‧凸垣
244‧‧‧環槽
246‧‧‧凸肋
250‧‧‧擺動限制組件
T1‧‧‧第一彈性件
252‧‧‧第一棘輪
254‧‧‧第二棘輪
260‧‧‧摩擦力施加元件
262‧‧‧摩擦片
262a‧‧‧凹槽
264‧‧‧軸襯套
264a‧‧‧套筒部
264b‧‧‧環部
266‧‧‧固定環
266a‧‧‧穿孔
266b‧‧‧螺紋段
T2‧‧‧第二彈性件
268‧‧‧調整鈕
321‧‧‧螺孔[This creation]
100‧‧‧ Bicycle rear derailleur
10‧‧‧ Pedestal
12‧‧‧Installation Department
20‧‧‧ linkage group
22‧‧‧ Connecting rod
221‧‧‧Pivot
30‧‧‧Mobile parts
32‧‧‧ Subject
32a‧‧‧ openings
32b‧‧‧ openings
32c‧‧‧ inner surface
33‧‧‧Bumps
34‧‧‧ pivotal department
35‧‧‧ convex
35a‧‧‧ surface
35b‧‧‧ surface
36‧‧‧Cylinder
320‧‧ ‧ room
40‧‧‧ pivot
42‧‧‧垣
43‧‧‧shims
44‧‧‧ Ring groove
46‧‧‧Threaded section
40a‧‧ threaded section
50‧‧‧Swing limit assembly
S1‧‧‧First elastic parts
C‧‧‧C-ring
52‧‧‧First ratchet
52a‧‧‧ end face
521‧‧‧ convex ring
54‧‧‧second ratchet
54a‧‧‧ end face
60‧‧‧ friction applying element
61‧‧‧O-ring
62‧‧‧ friction plate
622‧‧‧ Groove
64‧‧‧Shaft bushing
642‧‧‧Sleeve Department
644‧‧‧ Ring Department
66‧‧‧Washers
68‧‧‧ Nuts
70‧‧‧Chaper guide
72‧‧‧First swing arm
722‧‧‧Perforation
724‧‧‧Positioning holes
724'‧‧‧Positioning holes
74‧‧‧Second swing arm
76‧‧‧guide wheel
78‧‧‧Tension wheel
80‧‧‧End cover
A1, a2‧‧‧ positioning axis
A1‧‧‧clockwise
A2‧‧‧ counterclockwise
B1‧‧‧Bolts
S2‧‧‧Second elastic parts
200‧‧‧ Bicycle rear derailleur
240‧‧‧ pivot
242‧‧‧ convex
244‧‧‧ Ring groove
246‧‧‧ rib
250‧‧‧Swing limit assembly
T1‧‧‧ first elastic parts
252‧‧‧First ratchet
254‧‧‧second ratchet
260‧‧‧ friction applying element
262‧‧‧ friction plate
262a‧‧‧ Groove
264‧‧‧Shaft bushing
264a‧‧‧Sleeve
264b‧‧‧ Ring Department
266‧‧‧Fixed ring
266a‧‧‧Perforation
266b‧‧ Thread segment
T2‧‧‧Second elastic parts
268‧‧‧Adjustment button
321‧‧‧ screw hole
圖1係本創作第一較佳實施例自行車後變速器之立體圖; 圖2係上述較佳實施例自行車後變速器之分解立體圖; 圖3係圖2之3-3方向剖視圖; 圖4係圖1之4-4方向剖視圖; 圖5係以自行車後變速器之導鏈器、樞軸、第一棘輪與第二棘輪為主的立體圖,其中移動件之主體以假想線表示; 圖6係本創作第二較佳實施例自行車後變速器的立體圖; 圖7為上述較佳實施例自行車後變速器之分解立體圖; 圖8係圖6之8-8方向剖視圖。1 is a perspective view of a bicycle rear derailleur according to a first preferred embodiment of the present invention; FIG. 2 is an exploded perspective view of the bicycle rear derailleur of the preferred embodiment; FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. Figure 4 is a perspective view of the chain guide, pivot, first ratchet and second ratchet of the bicycle rear derailleur, wherein the main body of the moving member is represented by an imaginary line; BRIEF DESCRIPTION OF THE DRAWINGS FIG. 7 is an exploded perspective view of the bicycle rear derailleur of the preferred embodiment; FIG. 8 is a cross-sectional view taken along line 8-8 of FIG.
100‧‧‧自行車後變速器 100‧‧‧ Bicycle rear derailleur
10‧‧‧基座 10‧‧‧ Pedestal
12‧‧‧安裝部 12‧‧‧Installation Department
20‧‧‧連桿組 20‧‧‧ linkage group
30‧‧‧移動件 30‧‧‧Mobile parts
70‧‧‧導鏈器 70‧‧‧Chaper guide
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW104220351U TWM526541U (en) | 2015-12-18 | 2015-12-18 | Rear gearshift device for bicycle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW104220351U TWM526541U (en) | 2015-12-18 | 2015-12-18 | Rear gearshift device for bicycle |
Publications (1)
Publication Number | Publication Date |
---|---|
TWM526541U true TWM526541U (en) | 2016-08-01 |
Family
ID=57182560
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW104220351U TWM526541U (en) | 2015-12-18 | 2015-12-18 | Rear gearshift device for bicycle |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWM526541U (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI600583B (en) * | 2015-12-18 | 2017-10-01 | Lee Chi Entpr Co Ltd | Bicycle rear derailleur |
TWI715432B (en) * | 2020-02-06 | 2021-01-01 | 彥豪金屬工業股份有限公司 | Bicycle rear derailleur |
CN112776939A (en) * | 2020-12-17 | 2021-05-11 | 兰溪智行云运动科技有限公司 | Bicycle rear derailleur with self-adaptive damper |
CN115071879A (en) * | 2022-05-30 | 2022-09-20 | 惠州市元胜自行车配件有限公司 | Rear derailleur |
-
2015
- 2015-12-18 TW TW104220351U patent/TWM526541U/en unknown
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI600583B (en) * | 2015-12-18 | 2017-10-01 | Lee Chi Entpr Co Ltd | Bicycle rear derailleur |
TWI715432B (en) * | 2020-02-06 | 2021-01-01 | 彥豪金屬工業股份有限公司 | Bicycle rear derailleur |
CN112776939A (en) * | 2020-12-17 | 2021-05-11 | 兰溪智行云运动科技有限公司 | Bicycle rear derailleur with self-adaptive damper |
CN115071879A (en) * | 2022-05-30 | 2022-09-20 | 惠州市元胜自行车配件有限公司 | Rear derailleur |
CN115071879B (en) * | 2022-05-30 | 2023-10-20 | 惠州市元胜自行车配件有限公司 | rear derailleur |
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