201144151 「、發明說明： 【發明所屬之技術領域】 :發明是有關於一種變速裝置，特別是指一種應用於 自行車上的自行車無段變速裝置。 【先前技術】 一般自行車的變速器為移鏈式變速器， 作前、後變速撥桿組改變前、後鍵輪之間的齒數比，= 到不同的轉速比。然而，此種變速器需以手動方式進行換 標變速，容易造成騎乘者的分心。再者，變速器在變速過 程中，易發生鏈條與鏈輪卡住，使得變速過程中較不平順 且騎乘者需耗費較大的踏壓力量才能完成變速的動作，同 時也容易造成鏈條脫離鏈輪以及產生噪音的情形。 ▲因此’如何構思出一種使用上較為方便且變速過程中 較為省力平順的自行車無段變速裝置’遂成為本發明要進 一步改進的主題。 【發明内容】 本發明之主要目的，在於提供一種結構簡單使用上較 方便且變速過程中較為平順省力之自行車無段變速裝置。 本發明之另一目的，在於提供-種能自動變速之自行 車無段變速裝置。 本發明之又一目的，ω 在於k供一種能手動變速之自杆 車無段變速裝置。 j 本毛明的目的及解決先前技術問題是採用以下技術手 奴來實現#㈣本發明所揭露的自行車無段變速裝置， 201144151 適於安裝在一轉軸上並與一動力源相連接，自行車無段變 速裝置包含一固定架、一傳動機構，及一驅動機構。 固定架與轉軸連接；傳動機構包括一可轉動地樞接於 轉軸的傳動盤；驅動機構包括一驅動普利盤、一滑動普利 盤、一皮帶、一推動單元，及一復位彈簧。驅動普利盤樞 接於固定架並可受動力源驅動而相對於固定架旋轉，驅動 普利盤包含一盤體，及一凸設於盤體一側的柱體；滑動普 利盤套設於柱體並可隨驅動普利盤同步轉動；皮帶環套於 驅動、滑動普利盤以及傳動盤之間，皮帶可受驅動、滑動 普利盤帶動而連動傳動盤旋轉；推動單元設置於柱體並可 推動滑動普利盤使其沿柱體軸向靠近驅動普利盤的盤體， 以帶動皮帶移動至驅動、滑動普利盤鄰近周緣處；復位彈 簧設置於柱體並對滑動普利盤朝遠離驅動普利盤的盤體方 向偏壓。 藉由上述技術手段’本發明自行車無段變速裝置的優 點及功效在於，藉由驅動機構之推動單元設計，使得滑動 普利盤能自動朝驅動普利盤的盤體靠近，或者是手動方式 控制滑動普利盤朝驅動普利盤的盤體靠近’藉此，以達到 變速的功效’使得自行車無段變速裝置使用上較方便且變 速過程中較為平順省力。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之二個較佳實施例的詳細說明中將可 清楚的呈現。透過具體實施方式的說明，當可對本發明為 201144151 達成預定目的所採取的技術手段及功效得以更加深入且具 體的了解’然而所附圖式只是提供參考與說明之用並非 用來對本發明加以限制。 在本發明被詳細描述之前’要注意的是，在以下的說 明内容中’類似的元件是以相同的編號來表示。 如圖1所示，是本發明自行車無段變速裝置的第一較 佳實施例，該自行車無段變速裝置200適於安裝在自行車 後輪11的一轉軸12上，並可與一動力源13相連接，在本 貫施例中’動力源13是以套設並β齒合於一前齒輪14上的 鏈條為例作說明。當然，隨著自行車類型的不同，動力源 13也可為皮帶或傳動軸等型式。 如圖1及圖2所示，自行車無段變速裝置200包含— 固定架2、一傳動機構3，及一驅動機構4。固定架2包括 二相間隔且分別呈矩形的側板21，及一連接於二側板21前 端的連接板22 ’其中，位於外側的側板21後端設有一通孔 23供轉軸12穿設，而固定架2的連接板22固定地連接於 車架（圖未示）上，藉此，使得固定架2能保持在如圖1所示 的位置。 如圖2、圖3及圖4所示，傳動機構3包括一可轉動地 樞接於轉軸12且位於外側側板21内側的傳動盤31。驅動 機構4設置於傳動機構3前方，驅動機構4包括一驅動普 利盤41、一滑動普利盤42及一皮帶43，驅動普利盤41可 轉動地樞接於固定架2的一設置於二側板21之間的樞軸24 上，驅動普利盤41包含一盤體411、一設於盤體411外側 201144151 的齒輪412，及一凸設於盤體411 門側的柱體413，動力源 13套設並嚙合於驅動普利盤41的齒鈐 、 J面輪412上，藉此，動力 源13被前齒輪14帶動旋轉時，舍回 町嘗冋時帶動驅動普利盤41 旋轉。 滑動普利盤42透過-貫孔421套設在柱體413上，滑 動普利盤42可受帶動而隨著驅動普㈣41同步轉動並沿 著柱體4U的軸向靠近驅動普利盤41的盤體4ιι。驅動普 利盤41的盤體411具有一位於内側的第_錐形面414，而 滑動普利盤42包括一位於外側且與第一錐形面414位置相 對應的第二錐形面422 ’皮帶43前端環套於驅動普利盤41 的第一錐形面414與滑動普利盤42的第二錐形面422之間 ’而皮帶43後端則環套於傳動盤31上，藉此，驅動普利 盤41及滑動普利盤42帶動皮帶43旋轉時能同時連動傳動 盤31旋轉。 驅動機構4還包括一設置於驅動普利盤41的柱體413 上用以推動滑動普利盤42的推動單元44，推動單元44包 含一接合盤441，接合盤441透過一貫孔442套設於柱體 413上且位於滑動普利盤42内側，接合盤441可藉由銲接 或卡接方式固定在柱體413,使得驅動普利盤41轉動時能 同時帶動接合盤441旋轉。滑動普利盤42還包括複數個凸 設於内側且呈環狀排列的第一凸齒423，接合盤441包括複 數個凸設於外側且呈環狀排列的第二凸齒443，所述第二凸 齒443能與所述第一凸齒423相嚙合，各第一凸齒423包 括第一斜面424 ’各第二凸齒443包括一用以抵接第一斜 201144151 面424的第二斜面444。當接合盤441被驅動普利盤μ帶 動旋轉時，各第二凸齒443能帶動滑動普利盤42的各第一 凸齒423旋轉，並且同時沿柱體413軸向朝驅動普利盤〇 的盤體411移動，藉此，能帶動皮帶43移動至驅動、滑動 普利盤41、42的第一、第二錐形面414、422鄰近周緣處 的位置（如圖12所示）。201144151 ", the invention description: [Technical field of the invention]: The invention relates to a shifting device, in particular to a bicycle stepless shifting device applied to a bicycle. [Prior Art] A general bicycle transmission is a shift chain type transmission The front and rear shift lever sets change the gear ratio between the front and rear key wheels, and = to different speed ratios. However, such a transmission needs to be manually changed for shifting, which is easy to cause distraction of the rider. Furthermore, during the shifting process, the transmission and the sprocket are prone to jam, which makes the shifting process less smooth and the rider needs to use a large amount of pedaling pressure to complete the shifting action, and also easily cause the chain to detach. The sprocket and the situation of noise generation ▲ Therefore, 'how to conceive a bicycle stepless speed change device which is more convenient to use and more labor-saving in the shifting process' is a subject to be further improved by the present invention. The main purpose is to provide a simple structure and convenient use, and the shifting process is relatively smooth and labor-saving. A bicycle stepless shifting device. Another object of the present invention is to provide a bicycle stepless shifting device capable of automatic shifting. Another object of the present invention is to provide a self-propelled self-propelled stepless shifting device. The purpose of solving the problem and solving the prior art problem is to realize the bicycle stepless transmission device disclosed in the present invention. (4) The bicycle stepless transmission device disclosed in the present invention, 201144151 is suitable for being mounted on a rotating shaft and connected with a power source, the bicycle The stepless transmission includes a fixed frame, a transmission mechanism, and a driving mechanism. The fixing frame is coupled to the rotating shaft; the transmission mechanism includes a driving plate rotatably pivotally coupled to the rotating shaft; the driving mechanism includes a driving Puli disk and a sliding a Ply disk, a belt, a pushing unit, and a return spring. The driving Puli disk is pivotally connected to the fixing frame and can be driven by the power source to rotate relative to the fixing frame, and the driving Puli disk comprises a disk body and a convex body. a cylinder disposed on one side of the disc body; the sliding Puli disc is sleeved on the cylinder body and can rotate synchronously with the driving Puli disk; the belt loop is sleeved on the driving, sliding Puli plate and transmitting Between the moving plates, the belt can be driven and driven by the sliding plate to rotate the driving disk; the pushing unit is disposed on the cylinder and can push the sliding Puli plate to move the disk body along the axial direction of the cylinder to drive the Puli disk. To drive the belt to drive, slide the vicinity of the periphery of the Ply plate; the return spring is disposed on the cylinder and bias the sliding Plucker plate away from the disk body driving the Ply disk. By the above technical means, the bicycle of the present invention has no The advantage and function of the segment shifting device is that the sliding unit can automatically approach the disc of the driving plate by the pushing unit design of the driving mechanism, or manually control the sliding plate to drive the Puli disk. The disc body is close to 'by this, in order to achieve the effect of shifting speed', which makes the bicycle stepless shifting device more convenient to use and smoother and more labor-saving during the shifting process. [Embodiment] The foregoing and other technical contents, features and effects of the present invention are The detailed description of the two preferred embodiments with reference to the drawings will be apparent. The technical means and functions of the present invention for achieving the intended purpose of 201144151 can be more deeply and specifically understood through the description of the specific embodiments. However, the drawings are only for the purpose of providing reference and description, and are not intended to limit the present invention. . Before the present invention is described in detail, it is to be noted that in the following description, similar elements are denoted by the same reference numerals. As shown in FIG. 1 , it is a first preferred embodiment of the bicycle stepless transmission device of the present invention. The bicycle stepless transmission device 200 is adapted to be mounted on a rotating shaft 12 of the bicycle rear wheel 11 and can be coupled to a power source 13 . In the present embodiment, the power source 13 is exemplified by a chain which is sleeved and β-toothed on a front gear 14. Of course, depending on the type of bicycle, the power source 13 can also be of the belt or drive shaft. As shown in FIGS. 1 and 2, the bicycle stepless transmission 200 includes a mounting bracket 2, a transmission mechanism 3, and a drive mechanism 4. The fixing frame 2 includes two side-spaced and rectangular-shaped side plates 21, and a connecting plate 22' connected to the front ends of the two side plates 21. The rear end of the side plates 21 at the outer side is provided with a through hole 23 for the rotating shaft 12 to be inserted and fixed. The connecting plate 22 of the frame 2 is fixedly attached to a frame (not shown), whereby the holder 2 can be held in the position shown in FIG. As shown in Figs. 2, 3 and 4, the transmission mechanism 3 includes a drive plate 31 rotatably pivotally coupled to the rotating shaft 12 and located inside the outer side plate 21. The driving mechanism 4 is disposed in front of the transmission mechanism 3. The driving mechanism 4 includes a driving Puli disk 41, a sliding Puli disk 42 and a belt 43. The driving Puli disk 41 is rotatably pivotally connected to the fixing frame 2. The pivoting plate 41 between the two side plates 21 includes a disk body 411, a gear 412 disposed on the outer side of the disk body 411 201144151, and a column 413 protruding from the door side of the disk body 411. The source 13 is sleeved and engaged with the yoke and the J-side wheel 412 of the driving plucking disc 41. Thereby, when the power source 13 is rotated by the front gear 14, the drive-up plough 41 is rotated when the shovel is tasted. The sliding plucking disk 42 is sleeved on the cylinder 413 through the through hole 421, and the sliding pulverizing disk 42 can be driven to rotate synchronously with the driving (four) 41 and to drive the pulverizing disk 41 along the axial direction of the cylinder 4U. The disk body 4 ιι. The disk body 411 driving the plucking disk 41 has a first tapered surface 414 on the inner side, and the sliding pulverizing disk 42 includes a second tapered surface 422 ′ located on the outer side and corresponding to the position of the first tapered surface 414. The front end of the belt 43 is looped between the first tapered surface 414 of the driving plucking disc 41 and the second tapered surface 422 of the sliding plucking disc 42, and the rear end of the belt 43 is looped over the driving plate 31. When the driving plucking disc 41 and the sliding plucking disc 42 drive the belt 43 to rotate, the driving disc 31 can be rotated at the same time. The driving mechanism 4 further includes a pushing unit 44 disposed on the cylinder 413 of the driving plate 41 for pushing the sliding plate 42. The pushing unit 44 includes a bonding plate 441, and the bonding plate 441 is sleeved through the constant hole 442. The cylinder 413 is located on the inner side of the sliding slab 42 and the splicing disk 441 can be fixed to the cylinder 413 by welding or snapping, so that the driving platter 41 can simultaneously rotate the engaging disk 441 when the pulverizing disk 41 is rotated. The sliding plucking disk 42 further includes a plurality of first protruding teeth 423 protruding from the inner side and arranged in a ring shape, and the engaging disk 441 includes a plurality of second protruding teeth 443 protruding from the outer side and arranged in a ring shape, the first The second protruding teeth 443 can be engaged with the first protruding teeth 423, and each of the first protruding teeth 423 includes a first inclined surface 424. Each of the second protruding teeth 443 includes a second inclined surface for abutting the first oblique 201144151 surface 424. 444. When the splice tray 441 is driven to rotate by the driving plucking disc μ, each of the second protruding teeth 443 can drive the first protruding teeth 423 of the sliding plucking disc 42 to rotate, and at the same time, axially toward the driving plucking disk along the cylinder 413 The disk body 411 is moved, whereby the belt 43 can be moved to drive the position of the first and second tapered faces 414, 422 of the sliding plate 41, 42 adjacent to the periphery (as shown in FIG. 12).
驅動機構4進一步包括一復位彈簧45，復位彈簧45為 一套設於套設於柱體413上且兩端分別抵接於驅動普利盤 41的盤體411以及滑動普利盤42的壓縮彈簧，復位彈簧μ 用以對滑動普利盤42朝遠離驅動普利盤41的盤體411方向 偏壓，以提供滑動普利盤42復位彈力。 圖3圖4及圖5所示，較佳地，推動單元44還包 3 又置於接合盤441相反側的作功件445，各作功件445 包括一呈矩形的桿體446，及一設置於桿體祕—端的重鐘 447杯體446具有一長形導孔448，接合盤441的二銷桿 449为別穿設於二作功件445的長形導孔，且各銷桿 449會抵接於各作功件445的桿體内側面，使各銷桿 449此將各作功件445的桿體446連接在接合盤441上。當 接口 # 441旋轉時’各作功件445會同時被帶動旋轉，且 各作力件445因離心力作用會對接合盤44】作功，以增加 " $疋轉時的動力。需說明的是’雖然本實施例的 作功件 445 齡身θ 双里疋以兩個為例作說明，在設計時也可設為 固同樣此達到對接合盤44丨作功的功效’但是以本實 施例所揭露的兩個作功彳445設計方式為較佳，能平衡地 201144151 對接合ϋ 441作功而不會使接合盤441產生晃動的情形。 如圖1、圖6及圖7所示，自行車無段變速裝置2〇〇還 包3偏壓機構5 ’偏壓機構5用以對皮帶43朝驅動普利 盤41的柱體413(如圖3)方向偏|以驅使皮帶43復位。偏 壓機構5包括一搖桿51、一滚輪52及一扭力彈箸η，二 搖杯51 @端透過_第_樞接柱枢接於固定架2的一 連接於外侧侧板21的延伸板25底端，滾輪52透過一第二 樞接柱55樞接於二搖桿51的另一端，滾輪52抵接於皮帶 43内表面。扭力彈簧53套設在第—樞接柱M上且兩端分 別連接在延伸板25以及其中—搖桿5i i，扭力彈寄^對 搖桿51朝下偏壓，使滾輪52能如圖！所示地將皮帶43下 ，而使其靠近驅動普利盤41的柱體413。需說明的是，本 實施例的搖# 51數量雖然、是以兩個為例作明，但設計時也 可n同樣能達到連接滾輪52及延伸板25的功效。 如圖1及圖8所不’較佳地’自行車無段變速裝置200 還包含一防塵蓋6,防塵蓋6包覆於傳動機構3、驅動機構 :::機：5外周圍，防塵蓋6可透過螺鎖或卡合方式組 3、_ : ^ 2的外側側板21，藉此，能避免傳動機構 保養所而耗費的材料與時間。 如圖l'®2及圖3所示，當自行車在靜止狀態時，藉 位二ST簧45對滑動驅動盤42偏壓’使得滑動普利盤42 '罪近於推動單元44之接合盤441的初始位置（如圖3 所不）。另外，藉由偏Μ機構5對皮帶43偏壓，使得皮帶 201144151 43位在驅動、滑動普利盤4卜42的第一、第二錐形面4i4 、422鄰近内周緣且靠近桎體413的一初始位置（如圖3所 示）。The driving mechanism 4 further includes a return spring 45. The return spring 45 is a set of compression springs disposed on the cylinder 413 and having two ends abutting against the disk body 411 for driving the plucking disk 41 and sliding the plucking disk 42 respectively. The return spring μ is used to bias the sliding plucking disk 42 toward the disk body 411 remote from the driving plucking disk 41 to provide a returning force of the sliding plucking disk 42. As shown in FIG. 3 and FIG. 5, preferably, the pushing unit 44 further includes a working member 445 disposed on the opposite side of the bonding pad 441. Each of the working members 445 includes a rectangular rod body 446, and a The weight 447 cup body 446 disposed on the secret end of the rod body has an elongated guide hole 448, and the two pins 449 of the joint disc 441 are long guide holes which are disposed through the two work pieces 445, and each pin 449 The inner side of each of the working members 445 is abutted, so that the pins 449 connect the rods 446 of the working members 445 to the engaging plates 441. When the interface # 441 is rotated, each of the work members 445 is simultaneously rotated, and each of the force members 445 acts on the splice tray 44 due to the centrifugal force to increase the power of the " It should be noted that although the 445-year-old body θ Shuangli 本 of the present embodiment is exemplified by two examples, it can also be set as a solid in the design to achieve the effect on the bonding disk 44. It is preferable to design the two work 彳 445 disclosed in the embodiment to balance the work of the joint ϋ 441 without causing the joint disk 441 to sway. As shown in FIG. 1, FIG. 6, and FIG. 7, the bicycle stepless transmission device 2 further includes a biasing mechanism 5' biasing mechanism 5 for driving the belt 43 toward the cylinder 413 of the driving plate 41 (as shown in FIG. 3) Directional bias | to drive the belt 43 to reset. The biasing mechanism 5 includes a rocker 51, a roller 52 and a torsion spring η. The two shaker cups are connected to the extension plate of the fixed frame 2 and connected to the outer side plate 21. The roller 52 is pivotally connected to the other end of the two rockers 51 through a second pivot post 55, and the roller 52 abuts against the inner surface of the belt 43. The torsion spring 53 is sleeved on the first pivoting post M and the two ends are respectively connected to the extension plate 25 and the rocker 5i i, and the torsion force is biased downwardly to the rocker 51 so that the roller 52 can be as shown in the figure! The belt 43 is shown lowered to be adjacent to the cylinder 413 that drives the plucking disc 41. It should be noted that although the number of the rocker 51 in this embodiment is exemplified by two examples, the effect of connecting the roller 52 and the extension plate 25 can also be achieved by designing. As shown in FIG. 1 and FIG. 8 , the bicycle stepless transmission device 200 further includes a dust cover 6 covering the transmission mechanism 3 and the driving mechanism::: the outer periphery of the machine 5; the dust cover 6 The outer side panels 21 of the group 3, _: ^ 2 can be screwed or snapped, thereby avoiding the material and time spent on the maintenance of the transmission mechanism. As shown in FIG. 1'®2 and FIG. 3, when the bicycle is in a stationary state, the second driving spring 42 is biased by the second ST spring 45 so that the sliding plate 42 is close to the engaging disk 441 of the pushing unit 44. The initial position (as shown in Figure 3). In addition, the belt 43 is biased by the yaw mechanism 5 such that the belt 201144151 43 is located adjacent to the inner circumference of the first and second tapered faces 4i4, 422 of the driving and sliding plucking discs 42 and close to the body 413. An initial position (as shown in Figure 3).
如圖i、圖3及圖9所示，當使用者踏壓踏板15使得 動力源13提供動力帶動驅動普利盤41旋轉時，推動單元 44的接合盤44丨會被驅動普利盤41同時帶動旋轉。當 盤44i之第二凸齒443㈣二斜面州抵接於第一凸田齒^ 的第-斜面424時’第二凸#州施予第一斜面似的一 第-分力F1會驅使滑動普利盤42繞驅動普難Μ的柱體 413旋轉’使得滑動普利盤42可隨著接合盤44ι及驅動旅 利盤同步轉動；第二凸齒443同時施予第一斜面424 : 一第二分力F2則會驅使滑動普利盤42由初始位置（如圖3 所示）沿著柱體413的軸向移動，以逐漸靠近驅動普利盤μ 的盤體川’滑動普利盤42轴向移動過程中會擠壓皮帶43 並壓縮復位彈簧45，以帶動皮帶43由初始位置朝第一、第 =面Μ22鄰近外周緣處移動。自行車由靜止狀態 低速狀態的過程中，皮帶43與第―、 自4皇422之間的摩擦力較大，故能產生較大扭力，此時， 自仃車無段變速裝置2〇〇處於一低轉速高扭力的狀態。 中，由圖U及圖12所示，接合盤441在轉動過程 所以各作力#功件445的重鐘447設計在外側端的關係， i ^作功件祕受離心力作用時，各作功件祕會沿著 的延伸方向相對於鎖桿449向外移動，並且 、f物轉動，各作功件445旋轉過程中會透過 201144151 銷桿449對接合盤441作功，以增加接合盤441旋轉時的 動力，使得接合盤441帶動滑動普利盤42轉動及軸向移動 的力量旎增加，藉此，能克服第一、第二錐形面414、々Μ 與皮帶43之間的摩擦力，使滑動普利盤42能順暢地將皮 帶43朝第一、第二錐形面414、422鄰近外周緣處方向擠 壓。皮帶43被擠壓過程中，若皮帶43的拉力大於偏壓機 構5的扭力彈簧53施加於滾輪52上的力量，則皮帶43會 將滾輪52向上拉動，使搖桿51繞第一枢接柱M向上樞轉 並壓縮扭力彈簧53。 當自行車由低速狀態轉換至一高速狀態時，滑動普利 盤42擠壓皮帶43到第一、第二錐形面414、422鄰近外周 緣處的位置（如圖12所示），自行車無段變速裝置2〇〇處於 一高轉速低扭力的狀態。另外，當自行車由高速狀態轉換 至低速狀態時，藉由復位彈簧45的復位彈力能驅使滑動普 利盤42朝初始位置復位，而偏壓機構5的扭力彈簧53的 復位彈力能驅使皮帶43朝初始位置復位，藉此，自行車回 復到靜止狀態時，滑動普利盤42及皮帶43即可復位到初 始位置》 藉由自行車在運轉過程中的速度變化，使得皮帶43的 有效半徑隨之改變，且變速比也跟著改變，藉此，自行車 無段變速裝置200能達到無段自動變速的功效’使用者在 使用上較方便且變速過程中較為平順省力。 如圖13'圖14及圖15所示，是本發明自行車無段變 速裝置的第二較佳實施例，該自行車無段變速裝置2〇〇的 10 201144151 整體結構大致與第一較佳實施例相同，不同之處在於驅動 機構4的結構與作動方式有所不同。 驅動普利盤41’透過柱體413’樞接於固定架2的兩側板 21之間’齒輪412套設並固定於柱體413，外側端，柱體 413包括一沿軸向延伸的穿孔4丨5，及二位於相反側且沿轴 向延伸並與穿孔415連通的長形導槽416，穿孔415具有一 位於外側的小孔徑部417、一位於内側與長形導槽416連通 且直徑大於小孔控部417的大孔徑部418，及一界定於小孔 徑部417與大孔徑部418之間的肩部419。滑動普利盤42, 包含一設置於貫孔421的内環件425，内環件425包括二位 於相反側的滑接柱426，各滑接柱426經由各長形導槽416 穿伸至穿孔415的大孔徑部418内，且各滑接柱426能沿 著各長形導槽416的延伸方向相對於柱體413，滑動。另外 驅動普利盤41的柱體413 ’外表面鄰近内側端處設有一段 外螺紋410，透過一螺帽46螺接於柱體413，的外螺紋41〇 並抵接於滑動普利盤42，，能防止滑動普利盤42，脫離柱體 413,。 推動單元44’包含一穿設於穿孔415的大孔徑部418内 的推桿450、一可供使用者操作的撥桿451，及一穿設於穿 孔415内且連接於撥桿451與推桿45〇之間的連接線452。 推桿450包括-桿部453及-推動部454，桿部453外側端 與連接線452相連接’推動部454則設置於桿部453内侧 端處，推動部454呈圓盤狀且外徑略小於大孔徑部418的 直徑。撥桿451^置於自行車的握把（圖未示）處，使用者可 201144151 ί = ’透過連接線452拉動推桿450朝小孔徑 動立㈣。移動，藉此，推桿450的推動部454能推動滑 的滑接柱426沿著長形導槽4丨6滑移。復㈣ 426與/Γ推#彻的桿部453且㈣分別抵接於滑接柱 、“ 419’復位彈簧45對滑動普利盤42,的 2朝遠離驅動普利盤41,的盤體411方向偏壓，以提供滑 動·曰利盤42,復位彈力。 當使用者踏壓踏板15使得動力源13提供動力帶動驅 ^曰利盤41’旋轉時’藉由滑動普利盤42，的滑接柱似抿 接於柱體413’界定長形莫诚^ 介疋U導槽416的-槽壁·，使得驅動普 利盤41’能同時帶動滑動普利盤42,旋轉。 如圓16所不，使用者欲變速時，以手動方式撥動撥桿 幻旋轉’使連接線452拉動推桿45〇朝小孔徑部川方向 移動’推桿450移動過程中，推桿彻的推動部…會推 動滑動普利盤42,的滑接柱426沿著長形導槽416滑移，使 得滑動普利盤42,逐漸靠近驅動f利盤41，的盤體4ΐι。滑動 普利盤42’軸向移動過程中會擠壓皮帶43並壓縮復位彈菁 45,以帶動皮帶43由初始位置朝第―、第二錐形面414、 422鄰近外周緣處移動，藉此，以達到變速的功效。 另外，使用者釋放撥桿451時，藉由復位彈普45的復 位彈力即可驅使滑動普利盤42，復位到如圖14所示的# 位置。 歸納上述 驅動機構4之推動單元44 兩實施例的自行車無段變速裝置200，藉由 44’設計，使得滑動普利盤 42 12 201144151 驅動普利盤41的盤體411靠近，或者是手動方式 控‘動普利盤42’朝驅動普利盤41’的盤體4ιι靠近，藉 此以達到變速的功效，使得自行車無段變速裝置200使 用上較方便且變速過程中較為平順省力，確實能達成本發 明所訴求之目的。 准以上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明中請專利As shown in FIG. 3, FIG. 3 and FIG. 9, when the user presses the pedal 15 to cause the power source 13 to provide power to drive the Puli disk 41 to rotate, the engaging disk 44 of the pushing unit 44 is driven by the Puli disk 41 at the same time. Drive the rotation. When the second convex tooth 443 (four) of the disk 44i abuts the first inclined surface 424 of the first convex tooth ^, the second convex state of the first convex surface of the second convex state is driven by a first force component F1. The disc 42 rotates around the driven cylinder 413 so that the sliding plucking disc 42 can rotate synchronously with the engaging disc 44 ι and the driving travel disc; the second convex 443 simultaneously applies the first inclined surface 424 : a second The force component F2 will drive the sliding plucking disk 42 to move along the axial direction of the cylinder 413 from the initial position (as shown in FIG. 3) to gradually approach the disk body of the driving plucking plate. During the movement, the belt 43 is squeezed and the return spring 45 is compressed to move the belt 43 from the initial position toward the first and the second face 22 adjacent to the outer circumference. During the low-speed state of the bicycle, the friction between the belt 43 and the first and the fourth 422 is large, so that a large torque can be generated. At this time, the self-propelled stepless transmission 2 is in a state. Low speed and high torque state. In the U and FIG. 12, the bonding disk 441 is in the process of rotation, so that the weight 447 of the working device 445 is designed at the outer end, and the working device is subjected to the centrifugal force. The extension direction is outwardly moved relative to the lock lever 449, and the object rotates. During the rotation of each of the work members 445, the joint disc 441 is operated through the 201144151 pin 449 to increase the rotation of the joint disc 441. The power of the engaging disc 441 causes the sliding pulverizing disk 42 to rotate and axially move, thereby increasing the friction between the first and second tapered surfaces 414 and the belt 43. The sliding plucking disc 42 can smoothly press the belt 43 toward the first and second tapered surfaces 414, 422 in the direction of the outer circumference. During the pressing of the belt 43, if the pulling force of the belt 43 is greater than the force applied by the torsion spring 53 of the biasing mechanism 5 to the roller 52, the belt 43 pulls the roller 52 upward, so that the rocker 51 surrounds the first pivoting column. M pivots upward and compresses the torsion spring 53. When the bicycle is switched from the low speed state to a high speed state, the sliding plucking disc 42 presses the belt 43 to the position of the first and second tapered surfaces 414, 422 adjacent to the outer circumference (as shown in FIG. 12), and the bicycle has no section. The shifting device 2 is in a state of high rotational speed and low torque. In addition, when the bicycle is switched from the high speed state to the low speed state, the reset spring force of the return spring 45 can drive the sliding profit plate 42 to return to the initial position, and the return spring force of the torsion spring 53 of the biasing mechanism 5 can drive the belt 43 toward The initial position is reset, whereby when the bicycle returns to the rest state, the slide plate 42 and the belt 43 can be reset to the initial position. By the speed change of the bicycle during operation, the effective radius of the belt 43 changes accordingly. Moreover, the speed ratio is also changed, whereby the bicycle stepless speed change device 200 can achieve the effect of the automatic speed change without the section. The user is more convenient to use and smooth and labor-saving during the shifting process. As shown in FIG. 13 and FIG. 15, FIG. 14 and FIG. 15 are a second preferred embodiment of the bicycle stepless transmission device of the present invention. The overall structure of the bicycle stepless transmission device 10 is substantially the same as that of the first preferred embodiment. The same is true, except that the structure of the drive mechanism 4 is different from the manner of actuation. The driving plucking disc 41' is pivotally connected between the two side plates 21 of the fixing frame 2 through the cylinder 413'. The gear 412 is sleeved and fixed to the cylindrical body 413, and the outer side end. The cylindrical body 413 includes an axially extending through hole 4丨5, and two elongated guide grooves 416 which are located on opposite sides and extend in the axial direction and communicate with the through holes 415. The through holes 415 have a small aperture portion 417 on the outer side, and one inner side communicates with the elongated guide groove 416 and has a larger diameter. The large aperture portion 418 of the small aperture portion 417, and a shoulder portion 419 defined between the small aperture portion 417 and the large aperture portion 418. The slide plate 42 includes an inner ring member 425 disposed on the through hole 421. The inner ring member 425 includes two sliding posts 426 on opposite sides. Each of the sliding posts 426 extends through the elongated guide grooves 416 to the perforations. In the large aperture portion 418 of the 415, each of the sliding posts 426 is slidable relative to the cylinder 413 along the extending direction of each of the elongated guide grooves 416. In addition, the outer surface of the cylinder 413 ′ of the driving plucking disc 41 is provided with a section of external thread 410 adjacent to the inner end, and the external thread 41 螺 is screwed to the cylinder 413 through a nut 46 and abuts against the sliding plucking disk 42 . , it is possible to prevent the slide plate 42 from being detached from the cylinder 413. The pushing unit 44' includes a push rod 450 disposed in the large aperture portion 418 of the through hole 415, a user operable lever 451, and a through hole 415 and connected to the lever 451 and the push rod. A line 452 between 45 inches. The push rod 450 includes a rod portion 453 and a pushing portion 454. The outer end of the rod portion 453 is connected to the connecting line 452. The pushing portion 454 is disposed at the inner end of the rod portion 453. The pushing portion 454 has a disk shape and an outer diameter slightly. It is smaller than the diameter of the large aperture portion 418. The lever 451 is placed on the grip of the bicycle (not shown), and the user can pull the push rod 450 through the connecting line 452 toward the small aperture (4). Movement, whereby the pushing portion 454 of the push rod 450 can push the sliding sliding post 426 to slide along the elongated guide groove 4丨6. Complex (4) 426 and / Γ push # thorough rod portion 453 and (4) respectively abut the sliding column, "419" return spring 45 pairs of sliding Puli plate 42, 2 away from the drive plate 41, the disk body 411 The direction is biased to provide a sliding and profitable disk 42 to reset the elastic force. When the user presses the pedal 15 to cause the power source 13 to provide power to drive the disk 41' to rotate, 'by sliding the disk 42 The post is similar to the cylinder 413' defining a slot-shaped wall of the elongated guide channel 416, so that the drive plucking disc 41' can simultaneously drive the sliding plucking disc 42 to rotate. No, when the user wants to shift the speed, manually move the lever to rotate the magic wheel 'to make the connecting line 452 pull the push rod 45 to move toward the small aperture direction'. During the movement of the push rod 450, the pushing part of the push rod will be... The sliding post 426 that pushes the sliding plucking disc 42, slides along the elongated guide groove 416, so that the sliding plucking disk 42 is gradually moved closer to the disk body 4 that drives the disk 41. The sliding plough disk 42' is axially During the movement, the belt 43 is squeezed and the reset spring 45 is compressed to drive the belt 43 from the initial position toward the first and second tapered surfaces 414 and 422. The periphery moves to thereby achieve the effect of shifting. In addition, when the user releases the lever 451, the sliding plucking disk 42 can be driven by resetting the rebounding force of the rapper 45, and reset to the time shown in FIG. Positioning the pushing unit 44 of the above-mentioned driving mechanism 4 The bicycle stepless shifting device 200 of the two embodiments, by means of the 44' design, makes the sliding plough disk 42 12 201144151 drive the disk body 411 of the plough disk 41 close, or manually The mode control 'moving the plucking disk 42' approaches the disk body 4 ι of the driving plough disk 41', thereby achieving the effect of shifting, so that the bicycle stepless speed changing device 200 is more convenient to use and smoother and more labor-saving during the shifting process. The purpose of the present invention is to achieve the object of the present invention. The above is only the preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto.
1&圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 ^圖1是本發明自行車無段變速裝置的第一較佳實施例 安裝於自行車後輪的側視示意圖，說明自行車在靜止或低 速狀態； 圖2是本發明自行車無段變速裝置的第一較佳實施例 的俯視示意圖； 圖3是本發明自行車無段變速裝置的第一較佳實施例 的驅動機構的前視示意圖’說明滑動普利盤及皮帶在初始 位置； 圖4是本發明自行車無段變速裝置的第一較佳實施例 的驅動機構的立體分解圖； 圖5是本發明自行車無段變速裝置的第一較佳實施例 的側視示意圖，說明作功件旋轉前的狀態； 圖6是本發明自行車無段變速裝置的第一較佳實施例 的偏壓機構的放大圖； 13 201144151 圖7是本發明自行車無段變速裝置的第一較佳實施例 的偏壓機構的俯視示意圖； 圖8是本發明自行車無段變速裝置的第一較佳實施例 安裝於自行車後輪的側視示意圖，說明防塵蓋包覆於傳動 機構、驅動機構及偏壓機構外周圍； 圖9是本發明自行車無段變速裝置的第一較佳實施例 的作動示意圖’說明第二凸齒的第二斜面抵接於第一凸齒 的第一斜面； 圖10是本發明自行車無段變速裝置的第一較佳實施例鲁 的側視示意圖，說明作功件受離心力帶動而向外滑移的狀 態； 圖π是本發明自行車無段變速裝置的第一較佳實施例 安裝於自行車後輪的側視示意圖，說明自行車在高速狀態 y 圖12是本發明自行車無段變速裝置的第一較佳實施例 的驅動機構的前視示意圖，說明滑動普利盤靠近驅動普利 盤的盤體並擠壓皮帶到第一、第二錐形面鄰近外周緣處的籲 位置； 圖13疋本發明自行車無段變速裝置的第二較佳實施例 安裝於自行車後輪的側視示意圖，說明自行車在靜止或低 速狀態； 圖14是本發明自行車無段變速裝置的第二較佳實施例 的驅動機構的前視示意圖，說明滑動普利盤及皮帶在初始 位置； 14 201144151The simple equivalent changes and modifications made by the 1&and the description of the invention are still within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side elevational view showing the first preferred embodiment of the bicycle stepless transmission of the present invention mounted on a bicycle rear wheel, illustrating the bicycle in a stationary or low speed state; Fig. 2 is a bicycle without a segment of the present invention; 3 is a top plan view of a first preferred embodiment of the shifting device; FIG. 3 is a front elevational view of the driving mechanism of the first preferred embodiment of the bicycle stepless shifting device of the present invention illustrating the sliding plucking disc and the belt in an initial position; 4 is an exploded perspective view of the driving mechanism of the first preferred embodiment of the bicycle stepless shifting device of the present invention; FIG. 5 is a side elevational view of the first preferred embodiment of the bicycle stepless shifting device of the present invention, illustrating the working piece Figure 6 is an enlarged view of the biasing mechanism of the first preferred embodiment of the bicycle stepless shifting device of the present invention; 13 201144151 Figure 7 is a first preferred embodiment of the bicycle stepless shifting device of the present invention. FIG. 8 is a schematic side view of the first preferred embodiment of the bicycle stepless transmission device of the present invention mounted on the rear wheel of the bicycle, illustrating dust prevention The cover is wrapped around the outer periphery of the transmission mechanism, the drive mechanism and the biasing mechanism; FIG. 9 is a schematic view showing the operation of the first preferred embodiment of the bicycle stepless transmission of the present invention, illustrating that the second inclined surface of the second protruding tooth abuts Figure 10 is a side elevational view of the first preferred embodiment of the bicycle stepless shifting device of the present invention, illustrating a state in which the work member is slid outward by centrifugal force; BRIEF DESCRIPTION OF THE DRAWINGS A first preferred embodiment of the bicycle stepless shifting device is mounted on a rear view of the bicycle rear wheel, illustrating the bicycle in a high speed state y. FIG. 12 is a driving mechanism of the first preferred embodiment of the bicycle stepless shifting device of the present invention. The front view shows that the sliding Puli plate is close to the disk body of the driving Puli disk and presses the belt to the first and second tapered faces adjacent to the outer peripheral edge; FIG. 13 is the first embodiment of the bicycle stepless transmission device of the present invention. 2 is a side view of a bicycle rear wheel, illustrating a bicycle in a stationary or low speed state; FIG. 14 is a second preferred embodiment of the bicycle stepless transmission of the present invention. Front view of the moving mechanism, indicating the sliding Puli disk and belt in the initial position; 14 201144151
圖15是本發明自行車無段變速裝置的第二較佳實施例 的驅動機構的立體分解圖；及 圖16是本發明自行車無段變速裝置的第二較佳實施例 的驅動機構的前視示意圖，說明滑動普利盤靠近驅動普利 盤的盤體並擠壓皮帶到第一、第二錐形面鄰近外周緣處的 位置。 15 201144151 【主要元件符號說明】 11 ··· ……後輪 12··· ......轉軸 13··· ......動力源 14··. ......則齒輪 15··· ……踏板 200 · ……自行車無段變速裝置 2 .... ……固定架 21 ··· ......側板 22.·. ……連接板 23··· ……通孔 24··· ......枢轴 25··· ……延伸板 3 ·.·· ……傳動機構 31… ......傳動盤 4 ·.·. ……驅動機構 41、 4 1 ’·驅動普利盤 411 · ……盤體 412 · ......齒輪 413、 413’·柱體 414 · ……第一錐形面 415 · ……穿孔 416 · ……長形導槽 417 . ……小孔徑部 ……大孔徑部 ……肩部 ……槽壁 42’·滑動普利盤 442··貫孔 ……第二錐形面 ......第一凸齒 ......第一斜面 · ……内環件 ......滑接柱 ……皮帶 44’ ·推動單元 ……接合盤 ……第二凸齒 ……第二斜面 ……作功件 · ……桿體 ......重錘 ……長形導孔 ……銷桿 ……·復位彈簣 ……推桿 ……撥桿 16 201144151 452 ·· •…連接線 53…… •…扭力彈簧 453… …·桿部 54..." 第 板接柱 454… •…推動部 55···.· 第·—柩接柱 46_.··· •…螺帽 6…… 防塵蓋 5…… •…偏壓機構 F1.… •…第一分力 51···.· •…搖桿 F2 •…第二分力 52••… •…滾輪Figure 15 is an exploded perspective view of a drive mechanism of a second preferred embodiment of the bicycle stepless transmission of the present invention; and Figure 16 is a front elevational view of the drive mechanism of the second preferred embodiment of the bicycle stepless transmission of the present invention. , indicating that the sliding plucking disc is close to the disc body of the driving plucking disc and pressing the belt to a position where the first and second tapered surfaces are adjacent to the outer peripheral edge. 15 201144151 [Explanation of main component symbols] 11 ··· ...... Rear wheel 12··· ...... Rotating shaft 13··· ...... Power source 14··. ...... Gear 15··· ...... pedal 200 · ...... bicycle stepless transmission 2 ..........fixing frame 21 ··· ...... side plate 22...·...connecting plate 23··· ... ...through hole 24··· ...... pivot 25··· ...... extension plate 3 ···· ...... transmission mechanism 31... ...... drive disk 4 ·........ drive Mechanism 41, 4 1 '·drives the plough disk 411 · ...... disk body 412 · ... gear 413, 413' · cylinder 414 · ... first tapered surface 415 · ... perforated 416 ... ...long guide groove 417 . . . small aperture section...large aperture section...shoulder section...slot wall 42'·sliding slab 442··through hole...second tapered surface...... First convex tooth...first inclined surface·...inner ring member...sliding post...belt 44'·pushing unit...joining disc...second convex tooth...second Bevel...workpieces·......rods...heavy hammers...long guide holes...pins...·reset bullets... Push rod...Pushing rod 16 201144151 452 ·· •...Connecting line 53... •...Torque spring 453...··Rod 54..." Plate post 454... •...Pushing part 55···.· - 柩 柱 46 46_.··· •... Nut 6... Dust cover 5... •...Pressure mechanism F1.... •...First component force 51·····•...Joystick F2 •... Second component 52••... •...roller
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