TWI823558B - Front gearshift device for bicycle - Google Patents
Front gearshift device for bicycle Download PDFInfo
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- TWI823558B TWI823558B TW111134489A TW111134489A TWI823558B TW I823558 B TWI823558 B TW I823558B TW 111134489 A TW111134489 A TW 111134489A TW 111134489 A TW111134489 A TW 111134489A TW I823558 B TWI823558 B TW I823558B
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- 230000008878 coupling Effects 0.000 claims description 9
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- 230000004308 accommodation Effects 0.000 claims description 3
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Abstract
Description
本發明係與自行車有關，特別是指一種提供內變速功能的自行車之前變速裝置。The present invention relates to bicycles, and in particular to a bicycle front shifting device that provides an internal shifting function.
按，一般自行車調整速度的方式通常是藉由調整前後齒盤的大小來配出不同的齒比，進而產生不同的傳動比。所謂的齒比，就是前齒盤的齒數與後齒盤的齒數之比值。例如前齒盤的齒數為36，後齒盤的齒數為18，則齒比就是36/18=2。齒比為2就代表前齒盤轉動1圈，會帶動後齒盤轉動2圈。而由於前齒盤是被曲柄帶動，後齒盤則會帶動後輪轉動，一般在沒有變速器的情況下齒比等於傳動比，因此在前述例子中，可得知曲柄轉動1圈，即帶動後輪轉動2圈。Press, the general way to adjust the speed of a bicycle is to adjust the size of the front and rear chainrings to create different gear ratios, thereby producing different transmission ratios. The so-called gear ratio is the ratio of the number of teeth on the front chainring to the number of teeth on the rear chainring. For example, the number of teeth on the front chainring is 36 and the number of teeth on the rear chainring is 18, then the gear ratio is 36/18=2. A gear ratio of 2 means that one rotation of the front chainring will cause the rear chainring to rotate two turns. Since the front chainring is driven by the crank, the rear chainring will drive the rear wheel to rotate. Generally, the gear ratio is equal to the transmission ratio in the absence of a transmission. Therefore, in the above example, it can be known that one rotation of the crank will drive the rear wheel. The wheel turns 2 times.
為了使騎士能根據不同騎車狀況調整自行車的傳動效率，因此大部分的自行車上配置有變速器。傳統的撥鏈式變速器可透過本身位置的改變而帶動鏈條移動至不同的齒盤上，由於齒盤之間的大小不同，踩踏的重量會因此改變，而達到變速的效果。In order to enable the rider to adjust the transmission efficiency of the bicycle according to different riding conditions, most bicycles are equipped with a transmission. The traditional derailleur can drive the chain to move to different chainrings by changing its position. Due to the different sizes of the chainrings, the pedaling weight will change accordingly, thereby achieving the speed change effect.
其中，習用的前齒盤變速器通常需要搭配複數個前齒盤作使用，透過前齒盤變速器的作動，可使鏈條在不同齒數的前齒盤之間移動。然而，配置多個前齒盤無形中會增加整個自行車的重量，且需要考量曲柄與車架之間的空間；另外如果是皮帶驅動的話無法同時設置多個皮帶輪。因此，如何開發一種可以使用於單一皮帶輪/齒盤，且不會占用太多空間的變速器，是相關領域的開發者亟待解決的目標之一。Among them, the conventional front chainring transmission usually needs to be used with a plurality of front chainrings. Through the actuation of the front chainring transmission, the chain can be moved between front chainrings with different numbers of teeth. However, configuring multiple front chainrings will virtually increase the weight of the entire bicycle, and the space between the crank and the frame needs to be considered; in addition, if it is a belt drive, multiple pulleys cannot be installed at the same time. Therefore, how to develop a transmission that can be used on a single pulley/gear and does not take up too much space is one of the goals that developers in related fields urgently need to solve.
本發明的主要發明目的在於提供一種自行車之前變速裝置，其可以透過改變太陽齒輪的作動方式改變傳動效率。The main purpose of the present invention is to provide a bicycle front transmission device, which can change the transmission efficiency by changing the actuation mode of the sun gear.
為達成上述之發明目的，本發明所提供之一種自行車之前變速裝置，包含有：一太陽齒輪組，具有一第一太陽齒輪及一第二太陽齒輪；該第一太陽齒輪與該第二太陽齒輪可各自自由轉動；一被動件，可沿一軸向轉動；複數個行星齒輪，設於該太陽齒輪組與該被動件之間，可環繞該太陽齒輪組公轉，且每一該行星齒輪可各自沿一軸向自轉；每一該行星齒輪具有一第一齒輪以及一第二齒輪，且該第一齒輪與該第二齒輪同步轉動；其中，該等第一齒輪嚙合該第一太陽齒輪，該等第二齒輪嚙合該第二太陽齒輪；一第一從動件，可在一第一位置與一第二位置間移動；當該第一從動件移動至該第一位置時，該第一從動件離開該第一太陽齒輪，使該第一太陽齒輪可自由轉動；當該第一從動件移動至該第二位置時，該第一從動件連接於該第一太陽齒輪，使該第一太陽齒輪無法轉動；一第二從動件，可在一第三位置與一第四位置間移動；當該第二從動件移動至該第三位置時，該第二從動件離開該第二太陽齒輪，使該第二太陽齒輪可自由轉動；當該第二從動件移動至該第四位置時，該第二從動件連接於該第二太陽齒輪，使該第二太陽齒輪無法轉動；以及一驅動件，可移動至一第五位置與移動至一第六位置；當該驅動件移動至該第五位置時，該驅動件驅動該第一從動件由該第一位置移動至該第二位置，且該第二從動件由該第四位置移動至該第三位置；當該驅動件移動至該第六位置時，該驅動件驅動該第二從動件由該第三位置移動至該第四位置，且該第一從動件由該第二位置移動至該第一位置。In order to achieve the above-mentioned object of the invention, the present invention provides a front transmission device for a bicycle, which includes: a sun gear set with a first sun gear and a second sun gear; the first sun gear and the second sun gear Each can rotate freely; a driven part can rotate along an axis; a plurality of planetary gears are disposed between the sun gear set and the driven part and can revolve around the sun gear set, and each of the planetary gears can rotate independently. Rotate along an axial direction; each planetary gear has a first gear and a second gear, and the first gear and the second gear rotate synchronously; wherein, the first gears mesh with the first sun gear, and the Wait for the second gear to mesh with the second sun gear; a first driven member can move between a first position and a second position; when the first driven member moves to the first position, the first driven member The driven member leaves the first sun gear so that the first sun gear can rotate freely; when the first driven member moves to the second position, the first driven member is connected to the first sun gear so that The first sun gear cannot rotate; a second follower can move between a third position and a fourth position; when the second follower moves to the third position, the second follower Leaving the second sun gear allows the second sun gear to rotate freely; when the second follower moves to the fourth position, the second follower is connected to the second sun gear so that the second follower moves to the fourth position. The sun gear cannot rotate; and a driving member can move to a fifth position and a sixth position; when the driving member moves to the fifth position, the driving member drives the first driven member from the third position. A position moves to the second position, and the second driven member moves from the fourth position to the third position; when the driving member moves to the sixth position, the driving member drives the second driven member It moves from the third position to the fourth position, and the first follower moves from the second position to the first position.
在一實施例中，該驅動件具有複數個驅動凸塊；該第一從動件具有複數個第一凸塊，對應於該等驅動凸塊；該第二從動件具有複數個第二凸塊，對應於該等驅動凸塊；當該驅動件移動至該第五位置時，該等驅動凸塊抵靠該第一從動件之該等第一凸塊並離開該等第二凸塊，使該第一從動件移動至該第二位置，該第二從動件移動至第三位置；當該驅動件移動至該第六位置時，該等驅動凸塊抵靠該第二從動件之該等第二凸塊並離開該等第一凸塊，使該第二從動件移動至該第四位置，該第一從動件移動至第一位置。In one embodiment, the driving member has a plurality of driving protrusions; the first driven member has a plurality of first protrusions corresponding to the driving protrusions; and the second driven member has a plurality of second protrusions. blocks, corresponding to the driving bumps; when the driving member moves to the fifth position, the driving bumps abut the first bumps of the first follower and leave the second bumps , causing the first driven member to move to the second position, and the second driven member to move to the third position; when the driving member moves to the sixth position, the driving protrusions abut against the second driven member. The second protrusions of the moving member move away from the first protrusions, causing the second follower to move to the fourth position and the first follower to move to the first position.
在一實施例中，該驅動件更具有複數個容置槽；當該驅動件移動至該第五位置時，該等第二凸塊容置於該等容置槽內；當該驅動件移動至該第六位置時，該等第一凸塊容置於該等容置槽內。In one embodiment, the driving member further has a plurality of receiving grooves; when the driving member moves to the fifth position, the second protrusions are received in the receiving grooves; when the driving member moves When reaching the sixth position, the first bumps are accommodated in the accommodation grooves.
在一實施例中，該驅動件係以旋轉的方式移動至該第五位置與該第六位置；該等驅動凸塊以環狀排列於該驅動件之一側；該第一從動件之該等第一凸塊與該第二從動件之該等第二凸塊亦呈環狀排列；該等第一凸塊排列於一第一圓周上，而該等第二凸塊排列於一第二圓周上；該第一圓周的直徑不等於該第二圓周的直徑。In one embodiment, the driving member moves to the fifth position and the sixth position in a rotational manner; the driving protrusions are arranged in an annular shape on one side of the driving member; the first driven member The first protrusions and the second protrusions of the second follower are also arranged in a ring; the first protrusions are arranged on a first circumference, and the second protrusions are arranged on a first circumference. on the second circumference; the diameter of the first circumference is not equal to the diameter of the second circumference.
在一實施例中，該等第一凸塊與該等第二凸塊形成交錯設置。In one embodiment, the first bumps and the second bumps are arranged in a staggered manner.
在一實施例中，更包含一第一彈性件及一第二彈性件；該第一彈性件之兩端分別頂抵於該第一太陽齒輪與該第一從動件，用以提供一第一彈力使該第一從動件產生由該第二位置往該第一位置之方向移動的趨；該第二彈性件之兩端分別頂抵於該第二太陽齒輪與該第二從動件，用以提供一第二彈力使該第二從動件產生由該第四位置往該第三位置之方向移動的趨勢。In one embodiment, it further includes a first elastic member and a second elastic member; two ends of the first elastic member respectively bear against the first sun gear and the first follower to provide a first An elastic force causes the first follower to move from the second position to the first position; both ends of the second elastic member respectively resist the second sun gear and the second follower. , used to provide a second elastic force to cause the second follower to tend to move from the fourth position to the third position.
在一實施例中，該第一從動件具有一第一結合孔；更包含一固定件，一端固定於該自行車之一車架，另一端具有延伸凸出之一承置部，對應於該第一結合孔之形狀；其中，該承置部之至少一部分伸入該第一從動件之該第一結合孔，使該第一從動件無法相對該固定件轉動。In one embodiment, the first follower has a first combination hole; and further includes a fixing piece, one end of which is fixed to a frame of the bicycle, and the other end has an extended protruding receiving portion corresponding to the The shape of the first combination hole; wherein, at least a part of the receiving portion extends into the first combination hole of the first follower, so that the first follower cannot rotate relative to the fixed component.
在一實施例中，該第二從動件具有一第二結合孔，對應於該第一從動件之外周緣之形狀；其中，該第一從動件之至少一部分伸入該第二從動件之該第二結合孔，使該第二從動件無法相對該第一從動件轉動。In one embodiment, the second follower has a second coupling hole corresponding to the shape of the outer periphery of the first follower; wherein at least a portion of the first follower extends into the second follower. The second combination hole of the moving member prevents the second driven member from rotating relative to the first driven member.
在一實施例中，該第一太陽齒輪設有一第一被嵌合部；該第一從動件接近該第一太陽齒輪之一側設有對應於該等第一被嵌合部的一第一嵌合部；令該第一從動件移動至該第二位置時，該第一嵌合部嵌合於該第一被嵌合部，使該第一太陽齒輪無法相對該第一從動件轉動。In one embodiment, the first sun gear is provided with a first engaged portion; a side of the first follower close to the first sun gear is provided with a first engaged portion corresponding to the first engaged portions. A fitting part; when the first driven member is moved to the second position, the first fitting part is fitted in the first fitted part, so that the first sun gear cannot be relative to the first driven part. The piece rotates.
在一實施例中，該第二太陽齒輪設有一第二被嵌合部，該第二從動件接近該第二太陽齒輪之一側設有對應於該第二被嵌合部的一第二嵌合部；令該第二從動件移動至該第四位置時，該第二嵌合部嵌合於該第二被嵌合部，使該第二太陽齒輪無法相對該第二從動件轉動。In one embodiment, the second sun gear is provided with a second engaged portion, and a side of the second follower close to the second sun gear is provided with a second engaged portion corresponding to the second engaged portion. Fitting part; when the second follower moves to the fourth position, the second fitting part is fitted in the second fitted part, so that the second sun gear cannot be relative to the second follower. Turn.
本發明所提供之自行車之前變速裝置，透過移動該驅動件來控制該第一從動件與該第二從動件的移動，進而調整該第一太陽齒輪與該第二太陽齒輪的作動方式，以達到多段變速的效果。相較習用前變速器需要設置複數個前齒盤，且無法使用於皮帶傳動的皮帶輪，本發明可適用於單一前齒盤/前皮帶輪之傳動結構，節省成本並提高使用範圍。The bicycle front speed change device provided by the present invention controls the movement of the first driven member and the second driven member by moving the driving member, thereby adjusting the actuation modes of the first sun gear and the second sun gear. To achieve the effect of multi-speed shifting. Compared with the conventional front derailleur that requires multiple front gears and cannot be used with a belt-driven pulley, the present invention can be applied to a single front gear/front pulley transmission structure, saving costs and increasing the range of use.
以下即依本發明所揭示的目的、功效及結構組態，舉出較佳實施例，並配合圖式詳細說明。In the following, according to the purpose, function and structural configuration disclosed by the present invention, preferred embodiments are cited and described in detail with reference to the drawings.
請參閱第1圖所示，本發明一較佳實施例提供一自行車1包含有一車架2、二車輪3、一曲柄裝置4、一第二被動件5及一傳動帶6上。該二車輪3樞設於該車架2之前後兩側。該曲柄裝置4樞設於該車架2，可供操作以產生一扭力。該第二被動件5設於位於該車架2後側的該車輪3之中心位置，可與後側的該車輪3一起轉動。該傳動帶6連接該曲柄裝置4與該第二被動件5。藉此，該曲柄裝置4作動產生之該扭力可藉由該傳動帶6傳遞至該第二被動件5，令其產生相對應的一驅動扭力，致使該車輪3藉該驅動扭力而轉動，並使該自行車1前進移動。Referring to Figure 1, a preferred embodiment of the present invention provides a bicycle 1 including a frame 2, two wheels 3, a crank device 4, a second passive component 5 and a transmission belt 6. The two wheels 3 are pivotally mounted on the front and rear sides of the frame 2 . The crank device 4 is pivotally mounted on the frame 2 and can be operated to generate a torsion. The second passive component 5 is located at the center of the wheel 3 on the rear side of the vehicle frame 2 and can rotate together with the wheel 3 on the rear side. The transmission belt 6 connects the crank device 4 and the second passive component 5 . Thereby, the torque generated by the operation of the crank device 4 can be transmitted to the second driven member 5 through the transmission belt 6, causing it to generate a corresponding driving torque, causing the wheel 3 to rotate with the driving torque, and make the wheel 3 rotate. The bike 1 moves forward.
請參閱第2圖至第4圖所示，本發明一較佳實施例所提供之該曲柄裝置4主要包含有：一曲柄件10、一被動件20、一太陽齒輪組30、一側蓋40、一行星齒輪50及一變速裝置60。其中：Referring to Figures 2 to 4, the crank device 4 provided in a preferred embodiment of the present invention mainly includes: a crank member 10, a passive member 20, a sun gear set 30, and a side cover 40 , a planetary gear 50 and a transmission device 60 . in:
該曲柄件10具有一基座11、一中軸12及一曲柄13。該基座11係固定於該車架2上，無法相對該車架2移動或轉動。該基座11概呈中空管狀，其一端設有一第一定位部110，該第一定位部110在本實施例中為環繞於該基座11之外壁面概呈凹凸相間的環狀卡榫。該中軸12穿設於該基座11之軸向內部，其兩端分別沿該基座11之兩端伸出該基座11外。該中軸12與該基座11之間設有二第一軸承(圖未示)，使該中軸12可相對該基座11轉動。該曲柄13設於該基座11之一側，可相對該基座11轉動。該曲柄13具有一行星架14及一臂部15。該行星架14概呈圓盤狀，其中心處具有一凸部140，在該凸部140之中心處更設有一軸孔141，供該中軸12之一端伸入該軸孔141，並利用一螺絲142固定該中軸12於該曲柄13，使該曲柄13與該中軸12可一起轉動。該行星架14更設有複數個柱部143，沿該行星架14之垂直方向延伸，並環繞於該凸部140周圍。其中，該柱部143概呈中空狀，且其內壁面設有內螺紋。該臂部15係沿該行星架14之周緣向遠離該行星架14之方向延伸，其遠離該行星架14之一端可配置一踏板16(如第1圖所示)，供操作者踩踏該踏板16以帶動該曲柄13相對該基座11轉動。要補充的一點是，該曲柄件10一般會設置的該曲柄13之數量為二，分別設置於該基座11的兩端。由於其與該基座11、該中軸12的連接關係相同，因此在本實施例中僅具體敘述其中一該曲柄13，另一該曲柄13可自行推及。The crank member 10 has a base 11 , a central axis 12 and a crank 13 . The base 11 is fixed on the frame 2 and cannot move or rotate relative to the frame 2 . The base 11 is generally in the shape of a hollow tube, and one end thereof is provided with a first positioning portion 110. In this embodiment, the first positioning portion 110 is an annular tenon that surrounds the outer wall of the base 11 and is generally concave and convex. The central axis 12 passes through the axial interior of the base 11 , and its two ends respectively extend out of the base 11 along the two ends of the base 11 . Two first bearings (not shown) are disposed between the central axis 12 and the base 11 so that the central axis 12 can rotate relative to the base 11 . The crank 13 is disposed on one side of the base 11 and can rotate relative to the base 11 . The crank 13 has a planet carrier 14 and an arm 15 . The planet carrier 14 is generally disk-shaped, with a convex portion 140 at its center, and an axis hole 141 at the center of the convex portion 140 for one end of the central axis 12 to extend into the axis hole 141, and use an Screws 142 fix the central axis 12 to the crank 13 so that the crank 13 and the central axis 12 can rotate together. The planet carrier 14 is further provided with a plurality of pillar portions 143 extending along the vertical direction of the planet carrier 14 and surrounding the convex portion 140 . The column 143 is generally hollow, and its inner wall is provided with internal threads. The arm 15 extends along the periphery of the planet carrier 14 in a direction away from the planet carrier 14. A pedal 16 (as shown in Figure 1) can be disposed on the end of the arm 15 away from the planet carrier 14 for the operator to step on the pedal. 16 to drive the crank 13 to rotate relative to the base 11 . It should be added that the crank member 10 is generally provided with two cranks 13 , which are respectively provided at both ends of the base 11 . Since its connection relationship with the base 11 and the central axis 12 is the same, only one of the cranks 13 is described in detail in this embodiment, and the other crank 13 can be pushed by itself.
該被動件20概呈環狀，位於該曲柄件10之該基座11與該曲柄13之間，並可隨該曲柄13同時轉動。在本實施例中，該被動件20與該第二被動件5均為一皮帶輪，而該傳動帶6則為對應於該等皮帶輪之一皮帶，形成一皮帶傳動系統；在另一實施例中，該被動件20與該第二被動件5均為一齒盤，而該傳動帶6則為對應於該等齒盤之一鏈條，形成一鏈條傳動系統。該被動件20具有預定數量的複數個被動齒21，形成於該被動件20之內壁面；及預定數量的複數個傳動齒22，形成於該被動件20之外壁面，供該傳動帶6嚙合。The passive component 20 is generally annular, located between the base 11 of the crank component 10 and the crank 13 , and can rotate simultaneously with the crank 13 . In this embodiment, the passive part 20 and the second passive part 5 are both pulleys, and the transmission belt 6 is a belt corresponding to the pulleys, forming a belt transmission system; in another embodiment, The passive component 20 and the second passive component 5 are both a toothed disc, and the transmission belt 6 is a chain corresponding to the toothed discs, forming a chain transmission system. The driven part 20 has a predetermined number of driven teeth 21 formed on the inner wall of the driven part 20; and a predetermined number of transmission teeth 22 formed on the outer wall of the driven part 20 for the transmission belt 6 to engage.
該太陽齒輪組30設於該被動件20內，包含並排設置之一第一太陽齒輪31及一第二太陽齒輪32。該第一太陽齒輪31為一環狀構件，具有預定數量的複數個第一太陽齒310形成於該第一太陽齒輪31之外周面，且在該第一太陽齒輪31之軸向一側延伸有一第一被嵌合部311。該第二太陽齒輪32亦為一環狀構件，具有預定數量的複數個第二太陽齒320形成於該第二太陽齒輪32之外周面，且在該第二太陽齒輪32之軸向一側延伸有一第二被嵌合部321。其中，該第一太陽齒輪31相較該第二太陽齒輪32接近該行星架14，且在本實施例中，該第一太陽齒輪31之大小/齒數小於該第二太陽齒輪32。The sun gear set 30 is located in the passive component 20 and includes a first sun gear 31 and a second sun gear 32 arranged side by side. The first sun gear 31 is an annular member with a predetermined number of first sun teeth 310 formed on the outer circumferential surface of the first sun gear 31 and extending on one axial side of the first sun gear 31 . The first fitted portion 311. The second sun gear 32 is also an annular member with a predetermined number of second sun teeth 320 formed on the outer peripheral surface of the second sun gear 32 and extending on one axial side of the second sun gear 32 There is a second fitted part 321. The first sun gear 31 is closer to the planet carrier 14 than the second sun gear 32 , and in this embodiment, the size/number of teeth of the first sun gear 31 is smaller than that of the second sun gear 32 .
該側蓋40設於該被動件20之軸向一側，使該被動件20位於該側蓋40與該曲柄13之間。該側蓋40概呈環形，其一側凸設有一中空的環部41，且該側蓋40在該環部周圍設有複數個貫孔42，對應於該行星架14之該等柱部143，用以供複數個螺固件43穿過該等貫孔42並嚙合於該等柱部143，以鎖固該側蓋40於該曲柄13上，藉以隨該曲柄13同步轉動。其中，該等柱部143之一端伸入該被動件20之軸向內部，且該等柱部143之軸向平行於該太陽齒輪組30之軸向。The side cover 40 is disposed on one axial side of the driven member 20 so that the driven member 20 is located between the side cover 40 and the crank 13 . The side cover 40 is generally annular, with a hollow ring portion 41 protruding from one side, and the side cover 40 is provided with a plurality of through holes 42 around the ring portion, corresponding to the column portions 143 of the planet carrier 14 , for allowing a plurality of screws 43 to pass through the through holes 42 and engage with the pillars 143 to lock the side cover 40 on the crank 13 so as to rotate synchronously with the crank 13 . One end of the column portions 143 extends into the axial interior of the passive component 20 , and the axial direction of the column portions 143 is parallel to the axial direction of the sun gear set 30 .
該等行星齒輪50分別樞設於該行星架14之該等柱部143上，且以該柱部143為間隔環狀排列在該行星架14周圍。每一該行星齒輪50具有一第一齒輪51及一第二齒輪52，該第一齒輪51具有預定數量的複數個第一齒510，形成於該第一齒輪51之外周面；該第二齒輪52具有預定數量的複數個第二齒520，形成於該第二齒輪52之外周面，且該等第一齒510之數量大於該等第二齒520之數量。其中，該等第一齒輪51分別嚙合於該太陽齒輪組30之該第一太陽齒輪31與該被動件20之該等被動齒21而不嚙合該第二太陽齒輪32；該等第二齒輪52嚙合於該第二太陽齒輪32而不嚙合該第一太陽齒輪31與該被動件20。在本實施例中，該第一齒輪51與該第二齒輪52以一體成形的方式形成同軸且並排之設置。The planet gears 50 are respectively pivoted on the column portions 143 of the planet carrier 14 and are arranged annularly around the planet carrier 14 with the column portions 143 as intervals. Each planetary gear 50 has a first gear 51 and a second gear 52. The first gear 51 has a predetermined number of first teeth 510 formed on the outer peripheral surface of the first gear 51; 52 has a predetermined number of second teeth 520 formed on the outer peripheral surface of the second gear 52 , and the number of the first teeth 510 is greater than the number of the second teeth 520 . Among them, the first gears 51 are respectively meshed with the first sun gear 31 of the sun gear set 30 and the driven teeth 21 of the driven part 20 without meshing with the second sun gear 32; the second gears 52 It meshes with the second sun gear 32 but does not mesh with the first sun gear 31 and the driven member 20 . In this embodiment, the first gear 51 and the second gear 52 are integrally formed coaxially and arranged side by side.
在本實施例中，更包含複數個承載齒輪53。該等承載齒輪53分別樞設於該行星架14之該等柱部143上，與該等行星齒輪50呈交錯設置，即任二該承載齒輪53之間具有該行星齒輪50，或任二該行星齒輪50之間具有該承載齒輪53。每一該承載齒輪53具有預定數量的複數個承載齒530，形成於該承載齒輪53之外周面。該等承載齒輪53之該等承載齒530僅嚙合於該被動件20之該等被動齒21而不嚙合於該第一太陽齒輪31與該第二太陽齒輪32。該等承載齒輪53僅用以提供該被動件20一承載力，並不影響該曲柄裝置4的傳動關係。In this embodiment, a plurality of bearing gears 53 are further included. The load-bearing gears 53 are respectively pivoted on the pillars 143 of the planet carrier 14 and are arranged staggered with the planet gears 50 , that is, there is the planet gear 50 between any two load-bearing gears 53 , or any two of the load-bearing gears 53 have the planet gears 50 between them. The carrier gear 53 is located between the planetary gears 50 . Each bearing gear 53 has a predetermined number of bearing teeth 530 formed on the outer peripheral surface of the bearing gear 53 . The carrying teeth 530 of the carrying gears 53 only mesh with the driven teeth 21 of the driven member 20 and do not mesh with the first sun gear 31 and the second sun gear 32 . The load-bearing gears 53 are only used to provide a load-bearing capacity of the passive member 20 and do not affect the transmission relationship of the crank device 4 .
該變速裝置60具有一固定件61、一第一從動件62、一第二從動件63、一驅動件64、一第一彈性件65及一第二彈性件66。該固定件61為一中空的管狀構建，一側具有對應於該基座11之該第一定位部110的一第二定位部610，另一側具有一凸伸的承置部611。在本實施例中，該第二定位部610係為形成於該固定件內壁面的凹凸相間之凹槽。藉此，該固定件61可透過該第二定位部610嵌合於該基座11，使該固定件61無法相對該基座11轉動。The transmission device 60 has a fixed part 61 , a first driven part 62 , a second driven part 63 , a driving part 64 , a first elastic part 65 and a second elastic part 66 . The fixing member 61 is a hollow tubular structure, with a second positioning portion 610 corresponding to the first positioning portion 110 of the base 11 on one side, and a protruding receiving portion 611 on the other side. In this embodiment, the second positioning portion 610 is an alternately concave and convex groove formed on the inner wall surface of the fixing member. Thereby, the fixing part 61 can be fitted into the base 11 through the second positioning part 610 , so that the fixing part 61 cannot rotate relative to the base 11 .
該第一從動件62為一中空的環狀構件，具有一第一結合孔620，貫穿該第一從動件62之軸向兩端，其形狀對應於該承置部611之形狀。在本實施例中，該第一結合孔620與該承置部611之形狀概呈六角形。在另一實施例中，該第一結合孔620與該承置部611之形狀則可為其他非圓形之形狀。藉此，該固定件61之該承置部611可穿過該第一結合孔620，使該第一從動件62固定於該固定件61。由於該第一結合孔620與該承置部611之形狀為六角形，因此該第一從動件62無法相對於該固定件61轉動，僅能沿該固定件61之軸向在一第一位置與一第二位置間移動。其中，該第一從動件62在遠離該第一太陽齒輪31之一側設有複數個環狀排列的第一凸塊621，在接近該第一太陽齒輪31之一側設有一第一嵌合部622。該第一嵌合部622對應於該第一太陽齒輪31之該第一被嵌合部311。在本實施例中，該第一被嵌合部311與該第一嵌合部622為可相互對合的齒狀結構。The first follower 62 is a hollow annular member with a first coupling hole 620 that penetrates both axial ends of the first follower 62 and has a shape corresponding to the shape of the receiving portion 611 . In this embodiment, the shapes of the first coupling hole 620 and the receiving portion 611 are generally hexagonal. In another embodiment, the shapes of the first coupling hole 620 and the receiving portion 611 may be other non-circular shapes. Thereby, the receiving portion 611 of the fixing member 61 can pass through the first combination hole 620 to fix the first follower 62 to the fixing member 61 . Since the shapes of the first combination hole 620 and the receiving portion 611 are hexagonal, the first follower 62 cannot rotate relative to the fixing member 61 and can only rotate along the axial direction of the fixing member 61 at a first position. position and a second position. The first follower 62 is provided with a plurality of annularly arranged first bumps 621 on a side away from the first sun gear 31 , and is provided with a first insert on a side close to the first sun gear 31 . Joint part 622. The first fitting portion 622 corresponds to the first fitted portion 311 of the first sun gear 31 . In this embodiment, the first fitted portion 311 and the first fitting portion 622 are tooth-like structures capable of being matched with each other.
該第二從動件63為一中空的環狀構件，且其外徑大於該第一從動件62。該第二從動件63具有一第二結合孔630，貫穿該第二從動件63之軸向兩端，其形狀對應於該第一從動件62之外周緣的形狀，均為非圓形。藉此，該第二從動件63可穿過該第二結合孔630以固定於該第一從動件62外緣；且由於該第二結合孔630與該第一從動件62外周緣的形狀為非圓形，因此該第二從動件63無法相對該第一從動件62轉動，僅能沿該第一從動件62之軸向在一第三位置與一第四位置間移動。該第二從動件63在遠離該第二太陽齒輪32之一側設有複數個環狀排列的第二凸塊631。在本實施例中，該等第一凸塊621排列於一第一圓周(該第一從動件62之環形一側)上，而該等第二凸塊631排列於一第二圓周(該第二從動件63之環形一側)上，且該第一圓周的直徑不等於該第二圓周的直徑。當該第一從動件62連接於該第二從動件63時，該等第一凸塊621與該等第二凸塊631係以交錯排列，意即任二該第一凸塊621之間設有該第二凸塊631，或稱任二該第二凸塊631之間設有該第一凸塊621。該第二從動件63在接近該第二太陽齒輪32的一側設有一第二嵌合部632，對應於該第二太陽齒輪32之該第二被嵌合部321。在本實施例中，該第二被嵌合部321與該第二嵌合部632為可相互對合的齒狀結構。The second follower 63 is a hollow annular member, and its outer diameter is larger than the first follower 62 . The second follower 63 has a second coupling hole 630 that penetrates both axial ends of the second follower 63. Its shape corresponds to the shape of the outer periphery of the first follower 62, both of which are non-circular. shape. Thereby, the second follower 63 can pass through the second combination hole 630 to be fixed on the outer edge of the first follower 62; and because the second combination hole 630 and the outer periphery of the first follower 62 The shape is non-circular, so the second follower 63 cannot rotate relative to the first follower 62, and can only rotate between a third position and a fourth position along the axial direction of the first follower 62. Move. The second follower 63 is provided with a plurality of second protrusions 631 arranged in an annular shape on a side away from the second sun gear 32 . In this embodiment, the first protrusions 621 are arranged on a first circumference (the annular side of the first follower 62), and the second protrusions 631 are arranged on a second circumference (the annular side of the first follower 62). on the annular side of the second follower 63), and the diameter of the first circumference is not equal to the diameter of the second circumference. When the first follower 62 is connected to the second follower 63, the first protrusions 621 and the second protrusions 631 are arranged in a staggered manner, that is, any two first protrusions 621 The second protrusions 631 are disposed between them, or the first protrusions 621 are disposed between any two second protrusions 631 . The second follower 63 is provided with a second fitting portion 632 on a side close to the second sun gear 32 , corresponding to the second fitted portion 321 of the second sun gear 32 . In this embodiment, the second engaged portion 321 and the second engaging portion 632 are tooth-like structures capable of being matched with each other.
該驅動件64為一中空的環形構件，設於該側蓋40之該環部41內並套設於該固定件61外。該驅動件64在接近該第一從動件62與該第二從動件63之一側設有複數個環狀排列的驅動凸塊641，該等驅動凸塊641對應於該等第一凸塊621與該等第二凸塊631。該驅動件64可受外力驅動而移動至一第五位置與一第六位置，當該驅動件64移動至該第五位置時，該等驅動凸塊641作用於該等第一凸塊621；當該驅動件64移動至該第六位置時，該等驅動凸塊641作用於該等第二凸塊631。該驅動件64更具有複數個容置槽642，每一該容置槽642形成於相鄰二該驅動凸塊641之間；當該驅動件64移動至該第五位置時，該等第二凸塊631容置於該等容置槽642內；當該驅動件64移動至該第六位置時，該等第一凸塊621容置於該等容置槽642內。要補充的是，在本實施例中，由於該驅動件64係為環狀構件，因此該第五位置指的是該等驅動凸塊641可接觸該等第一凸塊621的任一位置(依照凸塊的數量可能產生數個第五位置)；該第六位置指的是該等驅動凸塊641可接觸該等第二凸塊631的任一位置(依照凸塊的數量可能產生數個第六位置)。另外，該外力可透過拉線驅動、電性驅動或其他等效的驅動方式。The driving member 64 is a hollow annular component, which is disposed in the ring portion 41 of the side cover 40 and sleeved on the outside of the fixing member 61 . The driving member 64 is provided with a plurality of annularly arranged driving protrusions 641 on one side close to the first driven member 62 and the second driven member 63. The driving protrusions 641 correspond to the first protrusions. block 621 and the second bumps 631. The driving member 64 can be driven by an external force to move to a fifth position and a sixth position. When the driving member 64 moves to the fifth position, the driving protrusions 641 act on the first protrusions 621; When the driving member 64 moves to the sixth position, the driving protrusions 641 act on the second protrusions 631 . The driving member 64 further has a plurality of receiving grooves 642, each of the receiving grooves 642 is formed between two adjacent driving protrusions 641; when the driving member 64 moves to the fifth position, the second The bumps 631 are accommodated in the accommodating grooves 642; when the driving member 64 moves to the sixth position, the first bumps 621 are accommodated in the accommodating grooves 642. It should be added that in this embodiment, since the driving member 64 is an annular member, the fifth position refers to any position where the driving bumps 641 can contact the first bumps 621 ( Several fifth positions may be generated according to the number of bumps); the sixth position refers to any position where the driving bumps 641 can contact the second bumps 631 (several fifth positions may be generated according to the number of bumps). sixth position). In addition, the external force can be driven by wires, electrically driven or other equivalent driving methods.
該第一彈性件65設於該第一從動件62與該第一太陽齒輪31之間，一端頂抵於該第一太陽齒輪31，另一端頂抵於該第一從動件62。當該第一從動件62移動至該第二位置時，該第一彈性件65會受壓縮而產生一彈力作用於該第一從動件62之一端，使該第一從動件62產生從該第二位置往該第一位置之方向移動的趨勢。The first elastic member 65 is disposed between the first driven member 62 and the first sun gear 31 , with one end abutting the first sun gear 31 and the other end abutting the first driven member 62 . When the first follower 62 moves to the second position, the first elastic member 65 will be compressed to generate an elastic force acting on one end of the first follower 62, causing the first follower 62 to generate The tendency to move from the second position toward the first position.
該第二彈性件66設於該第二從動件63與該第二太陽齒輪32之間，一端頂抵於該第二太陽齒輪32，另一端頂抵於該第二從動件63。當該第二從動件63移動至該第四位置時，該第二彈性件66會受壓縮而產生一彈力作用於該第二從動件63之一端，使該第二從動件63有從該第四位置往該第三位置之方向移動的趨勢。The second elastic member 66 is disposed between the second driven member 63 and the second sun gear 32 , with one end abutting the second sun gear 32 and the other end abutting the second driven member 63 . When the second follower 63 moves to the fourth position, the second elastic member 66 will be compressed to generate an elastic force acting on one end of the second follower 63, so that the second follower 63 has The tendency to move from the fourth position to the third position.
藉由上述各元件結構所組合而成之本發明，其實際操作應用如下：The actual operation and application of the present invention composed of the above-mentioned component structures are as follows:
本發明之自行車之前變速裝置在本實施例中提供了兩種變速模式。請參閱第5圖及第6圖所示，當該驅動件64受外力驅動而移動至該第五位置時，在本實施例中可視為該驅動件64沿一旋轉方向轉動一第一預定角度，與此同時該驅動件64之該等驅動凸塊641亦隨之同步轉動。由於該等第一凸塊621與該等第二凸塊631為錯位關係，此時該等驅動凸塊641僅會接觸並推抵該第一從動件62之該等第一凸塊621而不推抵該第二從動件63之該等第二凸塊631。藉此該第一從動件62會被該等驅動凸塊641推動而由該第一位置往該第二位置的方向移動，直到該第一從動件62之該第一嵌合部622嵌合於該第一太陽齒輪31之該第一被嵌合部311，而該第一彈性件65則因為該第一從動件62與該第一太陽齒輪31之間的距離縮短而被壓縮。同時，由於該等驅動凸塊641並未作用於該等第二凸塊631，因此該第二從動件63會受到該第二彈性件66的彈力作用而從該第四位置回復到該第三位置，使該等第二凸塊631容置於該等容置槽642中(如第8圖所示)。在這種狀態下，該第一從動件62與該第一太陽齒輪31形成固定結構，使該第一太陽齒輪31無法被該等行星齒輪50帶動而轉動；而該第二從動件63與該第二太陽齒輪32形成自由結構，使該第二太陽齒輪32則可以被該等行星齒輪50帶動而轉動。藉此，該曲柄裝置4會以如第7圖所示的該第一太陽齒輪31(固定端)-該等第一齒輪51(輸入端)-該被動件20(輸出端)的傳動模式進行傳動而形成一第一傳動比，該第一傳動比會受該等第一太陽齒310、該等第一齒510與該等被動齒21的齒數所影響。而該第二太陽齒輪32則隨該等行星齒輪50轉動而不參與傳動。The bicycle front shifting device of the present invention provides two shifting modes in this embodiment. Please refer to Figures 5 and 6. When the driving member 64 is driven by an external force and moves to the fifth position, in this embodiment, the driving member 64 can be regarded as rotating a first predetermined angle along a rotation direction. , and at the same time, the driving protrusions 641 of the driving member 64 also rotate synchronously. Since the first bumps 621 and the second bumps 631 are in a misaligned relationship, the driving bumps 641 will only contact and push the first bumps 621 of the first follower 62 at this time. The second protrusions 631 do not push against the second follower 63 . Thereby, the first follower 62 will be pushed by the driving protrusions 641 and move from the first position to the second position until the first fitting portion 622 of the first follower 62 is engaged. The first engaged portion 311 of the first sun gear 31 is engaged, and the first elastic member 65 is compressed due to the shortening of the distance between the first driven member 62 and the first sun gear 31 . At the same time, since the driving protrusions 641 do not act on the second protrusions 631, the second follower 63 will be affected by the elastic force of the second elastic member 66 and return to the third position from the fourth position. In the third position, the second bumps 631 are accommodated in the accommodating grooves 642 (as shown in Figure 8). In this state, the first follower 62 and the first sun gear 31 form a fixed structure, so that the first sun gear 31 cannot be driven by the planet gears 50 to rotate; and the second follower 63 A free structure is formed with the second sun gear 32 so that the second sun gear 32 can be driven by the planetary gears 50 to rotate. Thereby, the crank device 4 will operate in the transmission mode of the first sun gear 31 (fixed end) - the first gears 51 (input end) - the driven member 20 (output end) as shown in Figure 7 The transmission forms a first transmission ratio, and the first transmission ratio will be affected by the number of teeth of the first sun teeth 310 , the first teeth 510 and the driven teeth 21 . The second sun gear 32 rotates with the planetary gears 50 and does not participate in transmission.
請參閱第8圖及第9圖所示，當該驅動件64受外力驅動而從移動至該第六位置時，在本實施例中可視為該驅動件64沿該旋轉方向轉動一第二預定角度，該驅動件64之該等驅動凸塊641亦隨之轉動。由於該等第一凸塊621與該等第二凸塊631為錯位關係，此時該等驅動凸塊641僅會推抵該第二從動件63之該等第二凸塊631而不推抵該第一從動件62之該等第一凸塊621。藉此該第二從動件63會被該等驅動凸塊641推動而由該第三位置往該第四位置的方向移動，直到該第二從動件63之該第二嵌合部632嵌合於該第二太陽齒輪32之該第二被嵌合部321，而該第二彈性件66由於該第二從動件63與該第二太陽齒輪32之間的距離縮短被壓縮。同時，由於該等驅動凸塊641並未作用於該等第一凸塊621， 因此該第一從動件62受到該第一彈性件65的彈力作用而從該第二位置回復到該第一位置，使該等第一凸塊621容置於該等容置槽642中(如第5圖所示)。在此狀態下，該第二從動件63與該第二太陽齒輪32形成固定結構，使該第二太陽齒輪32無法被該等行星齒輪50帶動而轉動；而該第一從動件62與該第一太陽齒輪31形成自由結構，使該第一太陽齒輪31則可以被該等行星齒輪帶動而轉動。藉此，該曲柄裝置4會以如第10圖所示的該第二太陽齒輪32(固定端)-該等第二齒輪52(第一輸入端)-該等第一齒輪51(第二輸入端)-該被動件20(輸出端)的傳動模式進行傳動以產生一第二傳動比。該第二傳動比受該等第二太陽齒320、該等第二齒520、該等第一齒510與該等被動齒21的齒數所影響。其中，該第二傳動比不同於該第一傳動比。而該第一太陽齒輪31則隨該等行星齒輪50轉動而不參與傳動。Please refer to Figures 8 and 9. When the driving member 64 is driven by an external force and moves from the sixth position, in this embodiment, the driving member 64 can be regarded as rotating along the rotation direction for a second predetermined amount. angle, the driving protrusions 641 of the driving member 64 also rotate accordingly. Since the first bumps 621 and the second bumps 631 are in a misaligned relationship, the driving bumps 641 will only push against the second bumps 631 of the second follower 63 without pushing The first protrusions 621 resist the first follower 62 . Thereby, the second follower 63 will be pushed by the driving protrusions 641 and move from the third position to the fourth position until the second fitting portion 632 of the second follower 63 is engaged. Engaged with the second engaged portion 321 of the second sun gear 32 , the second elastic member 66 is compressed due to the shortening of the distance between the second driven member 63 and the second sun gear 32 . At the same time, since the driving protrusions 641 do not act on the first protrusions 621, the first follower 62 is affected by the elastic force of the first elastic member 65 and returns to the first position from the second position. position so that the first bumps 621 are accommodated in the accommodating grooves 642 (as shown in Figure 5). In this state, the second follower 63 and the second sun gear 32 form a fixed structure, so that the second sun gear 32 cannot be driven by the planet gears 50 to rotate; and the first follower 62 and The first sun gear 31 forms a free structure, so that the first sun gear 31 can be driven by the planetary gears to rotate. Thereby, the crank device 4 will use the second sun gear 32 (fixed end) - the second gears 52 (first input end) - the first gears 51 (second input end) as shown in Figure 10 end)-the transmission mode of the driven member 20 (output end) performs transmission to generate a second transmission ratio. The second transmission ratio is affected by the number of teeth of the second sun teeth 320 , the second teeth 520 , the first teeth 510 and the driven teeth 21 . Wherein, the second transmission ratio is different from the first transmission ratio. The first sun gear 31 rotates with the planetary gears 50 and does not participate in transmission.
由前面的說明可知，通過改變該驅動件64的位置，即可改變該第一太陽齒輪31與該第二太陽齒輪32的作動方式，藉此調整該曲柄裝置4的傳動模式。要補充的是，除了本實施例所揭示的兩種變速模式外。在另一實施例中，本發明亦可藉由增加元件數量以提供更多種變速模式：例如將每一行星齒輪上的齒輪數增加為4個、太陽齒輪增加為4個、從動件亦增加為4個；則變速模式可增加為4種。As can be seen from the previous description, by changing the position of the driving member 64 , the operating modes of the first sun gear 31 and the second sun gear 32 can be changed, thereby adjusting the transmission mode of the crank device 4 . It should be added that in addition to the two transmission modes disclosed in this embodiment. In another embodiment, the present invention can also provide more transmission modes by increasing the number of components: for example, increasing the number of gears on each planetary gear to 4, increasing the number of sun gears to 4, and increasing the number of followers. Increased to 4; then the shifting modes can be increased to 4.
綜上所述，本發明所提供之自行車之前變速裝置，透過移動該驅動件64來控制該第一從動件62與該第二從動件63的移動，進而調整該第一太陽齒輪31與該第二太陽齒輪32的作動方式，以達到多段變速的效果。相較習用前變速器需要設置複數個前齒盤，且無法使用於皮帶傳動的皮帶輪，本發明可適用於單一前齒盤/前皮帶輪之傳動結構，節省成本並提高使用範圍。In summary, the bicycle front speed change device provided by the present invention controls the movement of the first driven member 62 and the second driven member 63 by moving the driving member 64, thereby adjusting the first sun gear 31 and the second driven member 63. The second sun gear 32 operates in a manner to achieve a multi-stage speed change effect. Compared with the conventional front derailleur that requires multiple front gears and cannot be used with a belt-driven pulley, the present invention can be applied to a single front gear/front pulley transmission structure, saving costs and increasing the range of use.
上述實施例僅為例示性說明本發明之技術及其功效，而非用於限制本發明。任何熟於此項技術人士均可在不違背本發明之技術原理及精神的情況下，對上述實施例進行修改及變化，因此本發明之權利保護範圍應如後所述之申請專利範圍。The above embodiments are only illustrative of the technology and its effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can make modifications and changes to the above embodiments without violating the technical principles and spirit of the invention. Therefore, the scope of protection of the rights of the invention should be as described below in the patent application scope.
1:自行車1:Bicycle
2:車架2: Frame
3:車輪3:wheels
4:曲柄裝置4: Crank device
5:第二被動件5: Second passive part
6:傳動帶6: Transmission belt
10:曲柄件10:Crank piece
11:基座11: base
110:第一定位部110:First positioning department
12:中軸12: Central axis
13:曲柄13:Crank
14:行星架14:Planet carrier
140:凸部140:convex part
141:軸孔141:Shaft hole
142:螺絲142:Screw
143:柱部143: Pillar
15:臂部15:Arm
16:踏板16: Pedal
20:被動件20: Passive parts
21:被動齒21: Passive gear
22:傳動齒22: Transmission gear
30:太陽齒輪組30:Sun gear set
31:第一太陽齒輪31:First sun gear
310:第一太陽齒310: First sun tooth
311:第一被嵌合部311: The first fitted part
32:第二太陽齒輪32: Second sun gear
320:第二太陽齒320: Second sun tooth
321:第二被嵌合部321: The second fitted part
40:側蓋40:Side cover
41:環部41: Ring part
42:貫孔42:Through hole
43:螺固件43:Screws
50:行星齒輪50:Planetary gear
51:第一齒輪51:First gear
510:第一齒510:First tooth
52:第二齒輪52:Second gear
520:第二齒520:Second tooth
53:承載齒輪53: Bearing gear
530:承載齒530: Bearing teeth
60:變速裝置60:Transmission device
61:固定件61: Fixtures
610:第二定位部610:Second Positioning Department
611:承置部611:Acquisition Department
62:第一從動件62: First follower
620:第一結合孔620: First binding hole
621:第一凸塊621: first bump
622:第一嵌合部622: First chimera part
63:第二從動件63: Second follower
630:第二結合孔630: Second binding hole
631:第二凸塊631: Second bump
632:第二嵌合部632: Second chimeric part
64:驅動件64:Driving parts
641:驅動凸塊641:Driving bump
642:容置槽642: Accommodation tank
65:第一彈性件65: First elastic member
66:第二彈性件66: Second elastic member
第1圖為本發明一較佳實施例裝設於一自行車的外觀示意圖。 第2圖為本發明一較佳實施例的分解圖。 第3圖為本發明一較佳實施例的部分元件之分解圖。 第4圖為本發明一較佳實施例的剖視圖。 第5圖為本發明一較佳實施例的局部示意圖，顯示第一從動件位於第一位置的情況。 第6圖為本發明一較佳實施例的局部示意圖，顯示驅動件驅動第一從動件移動至第二位置的情況。 第7圖為本發明一較佳實施例的剖視示意圖，顯示第一太陽齒輪-第一齒輪-被動件的傳動組態。 第8圖為本發明一較佳實施例的局部示意圖，顯示第二從動件位於第三位置的情況。 第9圖為本發明一較佳實施例的局部示意圖，顯示驅動件驅動第二從動件移動至第四位置的情況。 第10圖為本發明一較佳實施例的剖視示意圖，顯示第二太陽齒輪-第二齒輪-第一齒輪-被動件的傳動組態。 Figure 1 is a schematic view of the appearance of a preferred embodiment of the present invention installed on a bicycle. Figure 2 is an exploded view of a preferred embodiment of the present invention. Figure 3 is an exploded view of some components of a preferred embodiment of the present invention. Figure 4 is a cross-sectional view of a preferred embodiment of the present invention. Figure 5 is a partial schematic diagram of a preferred embodiment of the present invention, showing the first follower in the first position. Figure 6 is a partial schematic diagram of a preferred embodiment of the present invention, showing the driving member driving the first driven member to move to the second position. Figure 7 is a schematic cross-sectional view of a preferred embodiment of the present invention, showing the transmission configuration of the first sun gear-first gear-passive member. Figure 8 is a partial schematic diagram of a preferred embodiment of the present invention, showing the second follower in the third position. Figure 9 is a partial schematic diagram of a preferred embodiment of the present invention, showing the driving member driving the second driven member to move to the fourth position. Figure 10 is a schematic cross-sectional view of a preferred embodiment of the present invention, showing the transmission configuration of the second sun gear-the second gear-the first gear-the driven member.
4:曲柄裝置 4: Crank device
10:曲柄件 10:Crank piece
11:基座 11: base
12:中軸 12: Central axis
14:行星架 14:Planet carrier
142:螺絲 142:Screw
20:被動件 20: Passive parts
21:被動齒 21: Passive gear
22:傳動齒 22: Transmission gear
30:太陽齒輪組 30:Sun gear set
31:第一太陽齒輪 31:First sun gear
311:第一被嵌合部 311: The first fitted part
32:第二太陽齒輪 32: Second sun gear
321:第二被嵌合部 321: The second fitted part
40:側蓋 40:Side cover
50:行星齒輪 50:Planetary gear
51:第一齒輪 51:First gear
52:第二齒輪 52:Second gear
60:變速裝置 60:Transmission device
61:固定座 61: Fixed seat
611:承置部 611:Acquisition Department
62:第一從動件 62: First follower
622:第一嵌合部 622: First chimera part
63:第二從動件 63: Second follower
632:第二嵌合部 632: Second chimeric part
64:驅動件 64:Driving parts
65:第一彈性件 65: First elastic member
66:第二彈性件 66: Second elastic member
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| TW111134489A TWI823558B (en) | 2022-09-13 | 2022-09-13 | Front gearshift device for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW111134489A TWI823558B (en) | 2022-09-13 | 2022-09-13 | Front gearshift device for bicycle |
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| TWI823558B true TWI823558B (en) | 2023-11-21 |
| TW202411117A TW202411117A (en) | 2024-03-16 |
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| US20160195184A1 (en) * | 2007-01-22 | 2016-07-07 | Pinion Gmbh | Transmission unit |
| US20200398936A1 (en) * | 2018-03-01 | 2020-12-24 | Pinion Gmbh | Clutch arrangement, and gear mechanism unit for a vehicle which can be driven by muscle power |
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|---|---|---|---|---|
| US20160195184A1 (en) * | 2007-01-22 | 2016-07-07 | Pinion Gmbh | Transmission unit |
| CN102869565B (en) * | 2010-04-06 | 2015-03-18 | 盖茨公司 | Bicycle planetary gear transmission arrangement |
| US20140339787A1 (en) * | 2013-05-16 | 2014-11-20 | Miguel Angel Chung | Multiple Speed Planetary Gear Hub for a Stepping Motion Propelled Bicycle, tricycle or Vehicle |
| US20200398936A1 (en) * | 2018-03-01 | 2020-12-24 | Pinion Gmbh | Clutch arrangement, and gear mechanism unit for a vehicle which can be driven by muscle power |
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| Publication number | Publication date |
|---|---|
| TW202411117A (en) | 2024-03-16 |
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