M407881 五、新型說明： 【新型所屬之技術領域】 本創作與電動自行車有關，特別是有關於一種電動自 行車之内變速輪轂。 【先前技術】 為了在上坡路段能夠省力，在下坡路段能夠省時，不 論是人力或電動自行車均會安裝一變速器來達到變速的效 果。目前的變速器主要區分為外變速與内變速兩種態樣， 簡單來說，外變速的變速器主要是安裝在自行車的車架上 或其他外部位置而顯露在外，雖然具有變速範圍較大的特 色，但是需要定期保養且會佔據較大的空間，内變速的變 速器則是將所有的構件安裝於後輪轂内，可節省空間且不 需要時常保養。因此，本案之創作人主要針對内變速態樣 的變速器進行研發及改良，以提供一種具有良好傳動效果 及多段變速的内變速輪轂。 【新型内容】 本創作之主要目的在於提供一種電動自行車之内變速 輪轂，其具有良好的動力傳輸及多段變速的效果。 為達成上述目的，本創作之内變速輪轂包含有一輪轂 軸、一輪轂殼、一動力源、一驅動機構、一變速機構，以 及一變速控制件。該輪轂殼、該動力源及該驅動機構均可 旋轉地設於該輪轂軸，其中的驅動機構並與該動力源連 3 接，該變迷機構可旋轉地設於該輪轂轴，並設於該驅動機 構與該輪1^之間；該變速控制件設於該輪敎軸，並可分 離地與該變迷機構連接。 藉由上述設計，該驅動機構可受該動力源之驅動而單 向驅動該餘輯動’且職速麟可受該變速控制件的 控制而以不同轉速單向驅動該輪轂殼旋轉，以達到變速的 效果。 【實施方式】 茲配合圖式列舉以下較佳實施例，用以對本創作之結 構及功效進行詳細說明。 请參閱第一圖及第二圖，為本創作一較佳實施例之電 動自行車之内變速輪轂10，包含有一輪轂軸20、一輪轂殼 30、動力源40、一驅動機構50、一變速機構60，以及 一變速控制件70。 輪轂軸20穿過輪轂殼30，並以其兩端分別固定於電 動自行車之車架（圖中未示），使得輪轂殼3〇能以輪轂軸2〇 為中心相對輪轂轴20旋轉。 動力源4〇具有一定子42與一轉子44，定子42固定 於輪轂軸20 ’轉子44套設於輪轂軸20且與定子42連接， 可受疋子42之驅動而以輪數軸2〇為中心相對輪轂軸2〇 旋轉。 驅動機構50具有一驅動件51、一傳動件52、兩單向 器53a，53b，以及一減速齒輪組54。驅動件51可旋轉地 套設於輪敦紅 52套設於用以供—魅(圖中未示懷置；傳動件 53b為單向足軸2〇且包覆著動力源40 ;各單向器53a， 動件5=棘輪，其卜組單向器❿設於驅動件51與傳 之間另外一組單向器53b設於傳動件52之外壁 5 了 一 X喊30之内壁面之間；減速齒輪組54具有一托架 I-主齒輪56、—第—環齒輪57、三減速齒輪58，以 單向器59 ’托架55固定於輪轂轴2〇，主齒輪56固定 於轉子44而隨動力源4〇之轉子44轉動第一環齒輪57以 其外環面設於傳動件52之内壁面而可傳動㈣件52，各 減速齒輪58可旋轉地設於粍架55，並嚙合於主齒輪允及 第一環齒輪57之内環面之間，單向器59為單向棘輪，設 於托架55之外壁面及傳動件52之内壁面之間。 變速機構60具有一托架61、三行星齒輪62、一第一 太陽齒輪63、一第二太陽齒輪64、一第二環齒輪65，以 及一單向器66。托架61可旋轉地套設於輪轂軸20，並固 定於驅動機構50之傳動件52而可受傳動件52驅動旋轉； 各行星齒輪62町旋轉地設於托架61，且各行星齒輪62具 有同軸的一第一#邡622及一第二齒部624，第一齒部622 的半徑小於第二齒部624的半杈；第一太陽齒輪63可旋轉 地套設於輪轂軸20，並與各行星齒輪62之第一齒部622 嘀合；第二太陽齒輪64可旋轉地套設於輪轂軸20，並與 各行星齒輪62之第二齒部624嚙合，第二太陽齒輪64的 半徑小於第一太陽齒輪63的半徑，使得各行星齒輪62之 第一齒部622的半猥與第一太陽齒輪63的半徑總合等於各 行星齒輪62之第二齒部62 半徑總合；第二環齒輪65 m ^太_輪64的 菌輪65 μ其内環面喷合 之第二窗部624 ;單向器6 各订星齒輪 A早向棘輪’設於第二環齒輪 65之外㈣與輪轂殼3〇之内壁面之間。 變速控制件70具有一第—棘齒”及 G L齒輪6, 72分別樞設於輪_ 2〇，並分別 與第-太㈣輪63及第二太陽錄64 用以可選擇變速機構6〇之勤 77離地喃口 、/卜盔“丨A 動力傳遞路徑以轉換其變速比。 乂上為本創作之㈣速輪丨㈣詳 合第二圖就本創作之操作過程及特色進行說明 當動力源40之轉子44受定子以驅動而旋轉時，便 能驅動減速齒輪組54之㈣輪56 _㈣Μ 步驅動減軸触54之錢速錄料轉，接著各減速 齒輪58 0再透過與第—環絲57之喝合而再帶動傳動件 52旋轉使％•傳動件52能以單向器別驅動輪較殼％旋 轉》在此1#/兄下’若變速控制件％恰好位於低速槽第一 棘齒71與第-太陽嵩輪63之間不會相互喷合，第二棘齒 72與第-太陽齒輪64之間亦不會相互_合，使得變速機 構60之托架61會隨著傳動件52同步旋轉各行星齒輪 62便會隨著托架61之旋轉而帶動第一太陽齒輪63與第二 太陽齒輪64產生空轉，所以驅動構件2〇的轉速大於變速 機構60之第二環齒輪65的轉速，變速機構6〇在此時並不 會產生變速效果’且動力將由傳動件52經單向器53b傳遞 至輪轂殼30,而變速機構6〇之單向器的無作用。另一方 右傳動件52的轉速大於驅動件51的轉速時，單向器 3會被迫解除傳動效果。 一=將變速控制件70位於中速稽時，第-棘齒71與第 太陽齒輪63之間仍未相互哺合第二棘齒72與第二太 齒輪64之間則是相互喃合，此時，除了驅動機構50之 動件52持續能夠單向驅動輪轂殼扣旋轉之外變速機 6〇之第一太陽齒輪64會被第二棘齒72固定住，並藉由 與各行星齒輪62之第二齒冑624之間的喊合而迫使各行星 齒輪62反轉’各行星齒輪62便會再透過與第二環裔輪65 喷°而再帶動第二環齒輪65旋轉，所以變速機構60之 第晨齒輪65的轉速大於驅動構件的轉速，變速機構 〇 ^此時會產生變速效果，動力將由第二環齒輪65經單 向，66傳遞至輪穀30，而驅動構件20與輪轂30間之單 向益53b無作用’使得變速機構6()即能產生中速槽的變速 驅動輪轂殼30。 右將變速控制件7〇位於高賴時，第—棘齒與第 太陽齒輪63之間會相互唾合，第二棘齒72與第二太陽 齒輪64之間會相互分離，此時，變速機構6〇之第一太陽 齒輪63會被第一棘齒71固定住，並藉由與各行星齒輪& 之第齒4 622之間的喷合而迫使各行星齒輪62反轉，各 行星齒輪62便會㈣稍帛二環錄&之喷合而再帶動 第二環齒輪65旋轉’所以變速機構⑼之第二環齒輪65 的轉速大於驅動構件2G的轉速，變速機構6q在此時會產 生變速效果’動力將由第二環齒輪65經單向器於傳遞至 M407881 輪轂30,而驅動構件20與輪轂30間之單向器53b無作用， 使得變速機構60即能產生中速檔的變速驅動輪轂殼30。 其中變速機構60的變速比由數學公式計算出變速比，結果 顯示經由固定第二太陽齒輪64傳遞至輪轂殼30的變速比 小於經由固定第一太陽齒輪63傳遞至輪轂轂.30的變速比。 綜合上述可知，本創作之設計確實能夠提供輪轂殼良 好的動力傳輸效果，並且能夠藉由變速機構與變速控制件 的配合而達到多段變速的功用。 本創作於前揭實施例中所揭露的構成元件，僅為舉例 說明，並非用來限制本案之範圍，其他等效元件的替代或 變化，亦應為本案之申請專利範圍所涵蓋。 M407881 【圖式簡單說明】 第一圖為本創作一較佳實施例之剖視圖。 第二圖為本創作一較佳實施例之動力傳遞路徑示意 【主要元件符號說明】 内變速輪穀10 輪轂軸20 輪轂殼30 動力源40 定子42 轉子44 驅動機構50 驅動件51 傳動件52 單向器53a，53b 減速齒輪組54 托架55 主齒輪56 第一環齒輪57 減速齒輪58 單向器59 變速機構60 托架61 行星齒輪62 第一齒部622 第二齒部624 第一太陽齒輪63 第二太陽齒輪64 第二環齒輪65 單向器66 變速控制件70 第一棘齒71 第二棘齒72 9M407881 V. New description: [New technical field] This creation is related to electric bicycles, especially regarding the inner shifting wheel of an electric bicycle. [Prior Art] In order to save energy on an uphill section, it is possible to save time on a downhill section, regardless of whether a manpower or an electric bicycle is equipped with a transmission to achieve the effect of shifting. The current transmission is mainly divided into two types: outer shifting and inner shifting. In short, the outer shifting transmission is mainly installed on the bicycle frame or other external position and is exposed, although it has a wide range of shifting characteristics. However, it requires regular maintenance and takes up a lot of space. The internal shifting transmission installs all the components in the rear hub, which saves space and does not require frequent maintenance. Therefore, the creators of this case mainly developed and improved the transmission of the internal shifting mode to provide an internal shifting hub with good transmission effect and multi-step shifting. [New content] The main purpose of this creation is to provide an internal shifting hub for electric bicycles, which has good power transmission and multi-speed shifting effects. To achieve the above object, the shifting hub of the present invention includes a hub axle, a hub shell, a power source, a drive mechanism, a shifting mechanism, and a shifting control member. The hub shell, the power source and the driving mechanism are rotatably disposed on the hub axle, wherein the driving mechanism is coupled to the power source, and the slidable mechanism is rotatably disposed on the hub axle and is disposed on the hub axle The driving mechanism is disposed between the wheel and the wheel; the shifting control member is disposed on the rim shaft and is detachably coupled to the variator. With the above design, the driving mechanism can be driven by the power source to drive the remnant in one direction, and the service speed can be controlled by the shift control member to unidirectionally drive the hub shell to rotate at different rotational speeds to achieve The effect of shifting. [Embodiment] The following preferred embodiments are listed with reference to the drawings to explain the structure and function of the present invention in detail. Please refer to the first figure and the second figure. The shifting hub 10 of the electric bicycle according to the preferred embodiment of the present invention includes a hub axle 20, a hub shell 30, a power source 40, a driving mechanism 50, and a shifting mechanism. 60, and a shift control member 70. The hub axle 20 passes through the hub shell 30 and is fixed at its two ends to a frame of an electric bicycle (not shown) so that the hub shell 3 can rotate relative to the hub axle 20 about the hub axle 2 。. The power source 4 has a stator 42 and a rotor 44. The stator 42 is fixed to the hub axle 20. The rotor 44 is sleeved on the hub axle 20 and connected to the stator 42. The rotor 42 is driven by the dice 42 and is centered on the wheel axis 2〇. Rotate relative to the hub axle 2〇. The drive mechanism 50 has a drive member 51, a transmission member 52, two one-way devices 53a, 53b, and a reduction gear set 54. The driving member 51 is rotatably sleeved on the wheel of the Dunhuang 52 set for use in the charm (not shown in the figure; the transmission member 53b is a one-way foot shaft 2〇 and covered with the power source 40; each one-way The movable member 5a, the movable member 5=the ratchet, the group of the one-way device is disposed between the driving member 51 and the transmission, and the other group of the one-way device 53b is disposed between the outer wall 5 of the transmission member 52 and the inner wall surface of the X shouting 30 The reduction gear set 54 has a carrier I-main gear 56, a first ring gear 57, and a three reduction gear 58 fixed to the hub axle 2 with a one-way device 59' bracket 55, and the main gear 56 is fixed to the rotor 44. The rotor 44 of the power source 4 rotates the first ring gear 57 with its outer ring surface disposed on the inner wall surface of the transmission member 52 to transmit the (four) member 52. The reduction gears 58 are rotatably disposed on the truss 55 and meshed. The main gear 59 is disposed between the inner ring surface of the first ring gear 57. The one-way device 59 is a one-way ratchet wheel disposed between the outer wall surface of the bracket 55 and the inner wall surface of the transmission member 52. The shifting mechanism 60 has a support a frame 61, three planetary gears 62, a first sun gear 63, a second sun gear 64, a second ring gear 65, and a one-way device 66. The bracket 61 is rotatably sleeved The hub shaft 20 is fixed to the transmission member 52 of the driving mechanism 50 and can be driven to rotate by the transmission member 52. Each of the planetary gears 62 is rotatably disposed on the bracket 61, and each of the planetary gears 62 has a first coaxial line. 622 and a second tooth portion 624, the radius of the first tooth portion 622 is smaller than a half turn of the second tooth portion 624; the first sun gear 63 is rotatably sleeved on the hub axle 20 and first with each of the planet gears 62 The second sun gear 64 is rotatably sleeved on the hub axle 20 and meshes with the second tooth portion 624 of each of the planetary gears 62. The radius of the second sun gear 64 is smaller than the radius of the first sun gear 63. Therefore, the radius of the first half of the first tooth portion 622 of the planetary gears 62 and the first sun gear 63 are equal to the total radius of the second tooth portions 62 of the planetary gears 62; the second ring gear 65 m ^ too _ wheel The bacteria wheel of 64 is 65 μ, the second window portion 624 of the inner ring surface is sprayed; the one-way device 6 is arranged to the ratchet gear A, and the outer ratchet wheel is disposed outside the second ring gear 65 (four) and the inner wall surface of the hub shell 3 The shift control member 70 has a first ratchet and a GL gear 6, 72 respectively pivoted to the wheel _ 2 〇, and respectively The first-to-four (four) wheel 63 and the second sun record 64 are used to select the shifting mechanism 6 〇 77 离 离 、 、 、 、 / / / / / The speed wheel 丨 (4) is detailed in the second figure. The operation process and characteristics of the present invention are explained. When the rotor 44 of the power source 40 is driven to rotate by the stator, the (four) wheel of the reduction gear set 54 can be driven 56 _ (four) 驱动 step drive shaft reduction The speed of the material is turned on, and then the reduction gears 58 0 are re-transmitted with the first loop wire 57 to drive the transmission member 52 to rotate so that the transmission member 52 can drive the wheel to the shell. Rotation "here 1#/Brother" If the shift control member % is located just between the low speed slot first ratchet 71 and the first sun wheel 63, the second ratchet 72 and the first sun gear 64 are not sprayed together. The first sun gear 63 and the second sun gear are driven along with the rotation of the carrier 61 as the carrier 61 of the shifting mechanism 60 rotates the planetary gears 62 synchronously with the transmission member 52. 64 produces idling, so the rotational speed of the drive member 2〇 is greater than the rotation of the second ring gear 65 of the shifting mechanism 60 At the same time, the shifting mechanism 6 并不 does not produce a shifting effect at this time and the power will be transmitted from the transmission member 52 to the hub shell 30 via the one-way device 53b, and the one-way device of the shifting mechanism 6 无 has no effect. When the rotational speed of the other right transmission member 52 is greater than the rotational speed of the driving member 51, the one-way device 3 is forced to release the transmission effect. When the shift control member 70 is at the intermediate speed, the first ratchet 71 and the sun gear 63 are still not mutually fed. The second ratchet 72 and the second outer gear 64 are mutually symmetrical. When the moving member 52 of the driving mechanism 50 continues to be able to unidirectionally drive the hub shell to rotate, the first sun gear 64 of the transmission 6 is fixed by the second ratchet 72, and by the planetary gears 62 The call between the second gums 624 forces the planetary gears 62 to reverse. The planetary gears 62 are again sprayed through the second ring gear 65 to rotate the second ring gear 65, so the shifting mechanism 60 The rotation speed of the morning gear 65 is greater than the rotation speed of the driving member, and the shifting mechanism 此时^ will generate a shifting effect, and the power will be transmitted from the second ring gear 65 to the volute 30 via the unidirectional direction 66, and between the driving member 20 and the hub 30. The one-way benefit 53b has no effect 'to enable the shifting mechanism 6() to produce the shifting drive hub shell 30 of the intermediate speed slot. When the shift control member 7 is located at the right, the first ratchet and the sun gear 63 are mutually reciprocated, and the second ratchet 72 and the second sun gear 64 are separated from each other. At this time, the shifting mechanism The first sun gear 63 of 6 turns is fixed by the first ratchet 71, and the planetary gears 62 are forced to reverse by the spray-on with the teeth 4 622 of the respective planetary gears, and the planetary gears 62 are reversed. Then, the fourth ring gear 65 is rotated by the second ring recording & and the second ring gear 65 of the shifting mechanism (9) is rotated more than the rotational speed of the driving member 2G, and the shifting mechanism 6q is generated at this time. The shifting effect 'power will be transmitted by the second ring gear 65 through the one-way device to the M407881 hub 30, and the one-way device 53b between the drive member 20 and the hub 30 has no effect, so that the shifting mechanism 60 can generate the intermediate speed shifting drive. Hub shell 30. The gear ratio of the shifting mechanism 60 is calculated by a mathematical formula, and as a result, the gear ratio transmitted to the hub shell 30 via the fixed second sun gear 64 is smaller than the gear ratio transmitted to the hub hub 30 via the fixed first sun gear 63. In summary, the design of the present invention can provide a good power transmission effect of the hub shell, and can achieve the function of multi-step shifting by the cooperation of the shifting mechanism and the shift control member. The constituting elements disclosed in the foregoing embodiments are merely illustrative and are not intended to limit the scope of the present invention. The alternatives or variations of other equivalent elements are also covered by the scope of the patent application. M407881 [Simple description of the drawings] The first figure is a cross-sectional view of a preferred embodiment of the present invention. The second figure is a schematic diagram of the power transmission path of a preferred embodiment of the present invention. [Main component symbol description] Internal shifting wheel 10 Hub axle 20 Hub shell 30 Power source 40 Stator 42 Rotor 44 Drive mechanism 50 Drive member 51 Transmission member 52 Single Retractor 53a, 53b Reduction gear set 54 Bracket 55 Main gear 56 First ring gear 57 Reduction gear 58 One-way device 59 Transmission mechanism 60 Bracket 61 Planetary gear 62 First tooth portion 622 Second tooth portion 624 First sun gear 63 second sun gear 64 second ring gear 65 one-way device 66 shift control member 70 first ratchet 71 second ratchet 72 9