TW201811582A - Bicycle hub with clutch mechanism - Google Patents
Bicycle hub with clutch mechanism Download PDFInfo
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- TW201811582A TW201811582A TW105129848A TW105129848A TW201811582A TW 201811582 A TW201811582 A TW 201811582A TW 105129848 A TW105129848 A TW 105129848A TW 105129848 A TW105129848 A TW 105129848A TW 201811582 A TW201811582 A TW 201811582A
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Abstract
Description
本發明係關於一自行車的技術領域,特別是應用在越野運動的自行車(BMX自行車)的輪轂結構。 The invention relates to the technical field of a bicycle, in particular to a hub structure for a bicycle (BMX bicycle) for off-road sports.
BMX Freestyle自行車在外觀上除了具備一般自行車的架構外,該BMX自行車的前、後輪二側皆安裝在一踏桿,使用者可以藉由站在該踏桿上來操控該自行車以產生多種靜態或動態的變化。然而傳統的BMX自行車的輪轂設計會導致後輪空轉時,踏板曲桿會自動反轉,進而產生傷及使用者的情形。 In addition to the general bicycle structure, the BMX Freestyle bicycle is equipped with a pedal on both sides of the front and rear wheels of the BMX bicycle. The user can control the bicycle by standing on the pedal to generate a variety of static or Dynamic changes. However, the traditional BMX bicycle wheel design will cause the pedal crank to automatically reverse when the rear wheel is idling, which may cause injury to the user.
台灣第M356633號專利揭露一種輪轂。該專利前案的技術內提及以一多邊形凸塊推動一離合環上的滾柱向外凸出,以及使該滾柱接觸一傳動環及一輪轂本體的組合,進而達到驅動該輪轂本體轉動的效果。該專利前案僅提供一段離合行程。 Taiwan Patent No. M356633 discloses a hub. The technique of the prior art mentions that a polygonal bump pushes a roller on a clutch ring to protrude outward, and the roller contacts a combination of a transmission ring and a hub body to drive the hub body to rotate. Effect. The patent case only provides a clutch trip.
美國US20130299293號專利案揭露一種輪轂結構。該專利前案的技術內容提及以離合塊、棘爪及彈簧構成一離合機構。該離合機構的棘爪凸出卡制一內齒環時,該輪轂可受驅動而轉動。該專利前案僅提供一段離合行程。 U.S. Patent No. 6,130,299,293 discloses a hub structure. The technical content of the prior patent mentions that a clutch mechanism, a pawl and a spring constitute a clutch mechanism. When the pawl of the clutch mechanism protrudes to engage an internal ring gear, the hub can be driven to rotate. The patent case only provides a clutch trip.
本發明的目的在於提供一種具離合機構的自行車輪轂,其具 有能夠使一輪轂提供二段離合行程,藉此提高自行車的啟動行程,進而令使用者有更充裕的時間以進行變化姿勢或動作。 SUMMARY OF THE INVENTION It is an object of the present invention to provide a bicycle hub having a clutch mechanism that provides a two-stage clutch stroke for a hub, thereby increasing the starting stroke of the bicycle, thereby providing the user with more time to perform a changing posture or action.
本發明的目的在於提供一種具離合機構的自行車輪轂,其具有能夠在踏板曲桿不致自動產生向後轉動的情形,藉此降低踏板曲桿傷及使用者的機率。 SUMMARY OF THE INVENTION It is an object of the present invention to provide a bicycle hub having a clutch mechanism that has a situation in which the pedal crank does not automatically rotate backwards, thereby reducing the pedal crank injury and the user's chance.
為達上述的目的與功效,本發明揭露的車轂結構係包含一本體的內部結合一傳動環、一驅動構件及一輪轂心軸,進一步,一第一離合機構及一第二離合機構配置在該本體內部,且受該驅動構件的驅動。該第一離合機構及該第二離合機構各自提供一段離合行程,如此可提高自行車的啟動行程,以及踏板曲桿不致自動產生向後轉動的情形。 In order to achieve the above object and effect, the vehicle hub structure disclosed in the present invention comprises a body integrally coupled with a transmission ring, a driving member and a hub axle. Further, a first clutch mechanism and a second clutch mechanism are disposed at The body is internally and driven by the drive member. The first clutch mechanism and the second clutch mechanism each provide a clutch stroke, which can improve the starting stroke of the bicycle, and the pedal crank does not automatically generate a backward rotation.
以上即依本發明所揭示的目的與功效,舉出較佳實施例,並配合圖式加以詳細說明。 The above and other objects and advantages of the present invention will be described in detail with reference to the accompanying drawings.
10‧‧‧自行車 10‧‧‧Bicycle
12‧‧‧車架 12‧‧‧ frame
14‧‧‧輪子 14‧‧‧ Wheels
16‧‧‧輪子 16‧‧‧ Wheels
18‧‧‧踏桿 18‧‧‧Steps
20‧‧‧踏板曲柄 20‧‧‧ pedal crank
22‧‧‧踏板曲柄 22‧‧‧ pedal crank
24‧‧‧驅動齒盤 24‧‧‧ drive chain
26‧‧‧鏈條 26‧‧‧Chapter
28‧‧‧輪轂心軸 28‧‧·Wheel spindle
30‧‧‧輪轂 30‧‧·wheels
32‧‧‧本體 32‧‧‧Ontology
34‧‧‧傳動環 34‧‧‧ drive ring
36‧‧‧容置空間 36‧‧‧ accommodating space
38‧‧‧驅動構件 38‧‧‧ drive components
40‧‧‧扣鏈齒輪 40‧‧‧Buckle gear
42‧‧‧驅動塊 42‧‧‧ drive block
44‧‧‧第一離合機構 44‧‧‧First clutch mechanism
46‧‧‧驅動面 46‧‧‧ drive surface
48‧‧‧止擋凸塊 48‧‧‧stop bumps
50‧‧‧離合構件 50‧‧‧ clutch components
52‧‧‧環體 52‧‧‧Act
54‧‧‧滾柱 54‧‧‧roller
56‧‧‧操作空間 56‧‧‧Operating space
58‧‧‧內壁面 58‧‧‧ inner wall
60‧‧‧離合間距 60‧‧‧Clutch spacing
62‧‧‧容置凹空 62‧‧‧ accommodating hollow
64‧‧‧第二離合機構 64‧‧‧Second clutch mechanism
66‧‧‧離合卡制塊 66‧‧‧Clutch card block
68‧‧‧離合片 68‧‧‧Clutch
70‧‧‧離合凸塊 70‧‧‧Clutch bumps
72‧‧‧推力元件 72‧‧‧Thrust elements
74‧‧‧墊片 74‧‧‧shims
76‧‧‧軸套 76‧‧‧ bushings
78‧‧‧環部 78‧‧‧Circle
80‧‧‧管部 80‧‧‧ Department of Management
82~88‧‧‧軸承 82~88‧‧‧ bearing
90‧‧‧活動間隙 90‧‧‧ Activity gap
92‧‧‧穿孔 92‧‧‧Perforation
第1圖係本發明配置在一自行車的位置示意圖。 Figure 1 is a schematic view of the position of a bicycle in accordance with the present invention.
第2圖係本發明的外觀圖。 Fig. 2 is an external view of the present invention.
第3圖係本發明的分解圖。 Figure 3 is an exploded view of the present invention.
第4圖係本發明的結構示意圖。 Figure 4 is a schematic view of the structure of the present invention.
第5圖係本發明的第一離合機構對應傳動環的內壁面的結構示意圖。 Fig. 5 is a structural schematic view showing the inner wall surface of the transmission ring of the first clutch mechanism of the present invention.
第6圖係本發明第二離合機構的外觀圖。 Figure 6 is an external view of the second clutch mechanism of the present invention.
第7圖係本發明的局部結構示意圖。 Figure 7 is a schematic view showing the partial structure of the present invention.
第8圖係本發明驅動第二離合機構朝自行車前進方向轉動的動作示意 圖。 Fig. 8 is a schematic view showing the action of the second clutch mechanism for rotating in the forward direction of the bicycle.
第9圖係本發明驅動第一離合機構朝自行車前進方向轉動的動作示意圖。 Figure 9 is a schematic view showing the action of the first clutch mechanism for rotating in the forward direction of the bicycle.
第10圖係本發明驅動第一離合機構朝自行車後退方向轉動的動作示意圖。 Figure 10 is a schematic view showing the action of the first clutch mechanism for rotating in the bicycle backward direction.
第11圖係本發明驅動第二離合機構朝自行車後退方向轉動的動作示意圖。 Figure 11 is a schematic view showing the action of the second clutch mechanism for rotating in the bicycle backward direction.
第12圖係本發明第一離合機構對應自行車後退時的狀態示意圖。 Figure 12 is a schematic view showing the state of the first clutch mechanism of the present invention corresponding to the bicycle retreating.
第13圖係本發明驅動面的結構示意圖。 Figure 13 is a schematic view showing the structure of the driving surface of the present invention.
第14圖係本發明第二離合機構的離合卡制塊相對離合凸塊的另一結構示意圖。 Figure 14 is a schematic view showing another structure of the clutch block of the second clutch mechanism of the present invention with respect to the clutch bump.
第15圖係本發明第一離合機構另一實施例結構的分解圖。 Figure 15 is an exploded view showing the structure of another embodiment of the first clutch mechanism of the present invention.
第16圖係本發明以第一離合機構另一實施例所形成的結構示意圖。 Figure 16 is a schematic view showing the structure of the present invention in another embodiment of the first clutch mechanism.
請參閱第1圖,圖中顯示一BMX自行車10係一車架12的前後各自配置一輪子14和16,各該輪子14和16的二側皆具有一踏桿18,其中該輪子14稱為前輪,該輪子16稱為後輪。其次二踏板曲柄20和22結合一驅動齒盤24,二該踏板曲柄20和22及該驅動齒盤24的組合安裝在該車架12且位在二該輪子14和16之間。一鏈條26鏈結該驅動齒盤24及在該輪子16的一輪轂30。踏動該踏板曲柄20和22使該驅動齒輪盤24帶動該鏈條26轉動。該鏈條26帶動該輪轂30及該輪子16轉動,則該自行車10向前移動。 Referring to FIG. 1 , a BMX bicycle 10 series frame 12 is disposed on each of the front and rear sides of a wheel 14 and 16 , and each of the wheels 14 and 16 has a step bar 18 on each side thereof, wherein the wheel 14 is called The front wheel, the wheel 16 is called the rear wheel. Secondly, the two pedal cranks 20 and 22 are combined with a drive toothed disc 24, and the combination of the pedal cranks 20 and 22 and the drive chainring 24 is mounted on the frame 12 and between the two wheels 14 and 16. A chain 26 links the drive chain 24 and a hub 30 of the wheel 16. The pedal cranks 20 and 22 are stepped to cause the drive gear plate 24 to rotate the chain 26. The chain 26 drives the hub 30 and the wheel 16 to rotate, and the bicycle 10 moves forward.
請參閱第2圖所示,該輪轂30係一本體32的內部安裝複數個 轉動元件、嚙合元件及其他匹配元件。一輪轂心軸28安裝在該輪轂30的軸向中心。該輪轂心軸28穿過該轉動元件、該嚙合元件及該匹配元件,且該輪轂30的二端安裝在該車架12(見第1圖)。 Referring to Fig. 2, the hub 30 is a body 32 having a plurality of rotating members, engaging members and other matching members mounted therein. A hub axle 28 is mounted at the axial center of the hub 30. The hub mandrel 28 passes through the rotating member, the engaging member and the mating member, and the two ends of the hub 30 are mounted to the frame 12 (see Fig. 1).
請參閱第3、4圖,該輪轂30包括該本體32及一傳動環34的組合。該本體32的軸向空間為貫穿構造,該傳動環34安裝在該本體32的一端內部,且該傳動環34與該本體32結合成一體。舉例而言,該傳動環34可藉由螺鎖定位的方式結合該本體32。其次一容置空間(receiving space)36形成在該傳動環34的軸向,該容置空間36為貫穿構造。另外該本體32與該傳動環34也可以為一體成型的結構體。 Referring to Figures 3 and 4, the hub 30 includes a combination of the body 32 and a transmission ring 34. The axial space of the body 32 is a penetrating configuration, the transmission ring 34 is mounted inside one end of the body 32, and the transmission ring 34 is integrated with the body 32. For example, the drive ring 34 can be coupled to the body 32 by means of a screw lock. Next, a receiving space 36 is formed in the axial direction of the transmission ring 34, and the accommodating space 36 is a through structure. In addition, the body 32 and the transmission ring 34 may also be an integrally formed structure.
一驅動構件38係包含一扣鏈齒輪(sprocket)40及一驅動塊42。該驅動塊42連結該扣鏈齒輪40,該驅動塊42安裝在該容置空間36內,該扣鏈齒輪40位在該容置空間36外且用以結合該鏈條(未顯示)。 A drive member 38 includes a sprocket 40 and a drive block 42. The driving block 42 is coupled to the sprocket gear 40. The driving block 42 is mounted in the accommodating space 36. The sprocket gear 40 is located outside the accommodating space 36 and is used to join the chain (not shown).
一第一離合機構44包含複數驅動面46、複數止擋凸塊48及一離合構件(clutch member)50。各該驅動面46及該止擋凸塊48係形成在該驅動塊42的外表面。該離合構件50為一環體(ring element)52的周邊配置複數滾柱54。一操作空間(operating space)56形成在該環體52的中心。 A first clutch mechanism 44 includes a plurality of drive faces 46, a plurality of stop bumps 48, and a clutch member 50. Each of the driving faces 46 and the stop projections 48 are formed on an outer surface of the driving block 42. The clutch member 50 is provided with a plurality of rollers 54 at the periphery of a ring element 52. An operating space 56 is formed at the center of the ring body 52.
請參閱第5圖,該驅動塊42安裝在該操作空間56,各該滾柱54對應該驅動面46及該容置空間36的內壁面58。該滾柱54相鄰該止擋凸塊48,該滾柱54與該容置空間36的內壁面58間可以相距一離合間距60。其次複數容置凹空62分別形成在該驅動面46及該止擋凸塊48間,且該容置凹空62毗鄰止擋凸塊48。此外該滾柱54可活動地嵌入及移出該容置凹空62內。 Referring to FIG. 5 , the driving block 42 is mounted on the operating space 56 , and each of the rollers 54 corresponds to the driving surface 46 and the inner wall surface 58 of the accommodating space 36 . The roller 54 is adjacent to the stop projection 48. The roller 54 and the inner wall surface 58 of the accommodating space 36 can be separated by a clutch pitch 60. Then, a plurality of accommodating recesses 62 are respectively formed between the driving surface 46 and the stopper bumps 48, and the accommodating recesses 62 are adjacent to the stopper bumps 48. In addition, the roller 54 is movably inserted into and removed from the receiving recess 62.
請參閱第3、6圖,本發明包含一第二離合機構64。該第二離 合機構64位在該第一離合機構44的底部。該第二離合機構64包含複數離合卡制塊66及一離合片68。各該離合卡制塊66係形成在該環體52的底部,該離合片68具有複數離合凸塊70。該離合片68嵌接在該環體52的外表底部,各該離合凸塊70位在該操作空間56內且分別位在相鄰二個離合卡制塊66之間。 Referring to Figures 3 and 6, the present invention includes a second clutch mechanism 64. The second clutch mechanism 64 is located at the bottom of the first clutch mechanism 44. The second clutch mechanism 64 includes a plurality of clutch cards 66 and a clutch plate 68. Each of the clutch cards 66 is formed at the bottom of the ring body 52. The clutch plate 68 has a plurality of clutch projections 70. The clutch plates 68 are engaged at the outer bottom of the ring body 52. The clutch protrusions 70 are located in the operating space 56 and are respectively located between the adjacent two clutch cards 66.
請再參閱第3、4圖,本發明包含一推力元件(pushing element)72。該推力元件72配置在該本體32內部。該推力元件72可以是波浪形彈簧片或其他類似的元件。該推力元件72的配數量可以依實際需求增加。該推力元件72一端推抵在該第二離合機構64的該離合片68的底部。 Referring again to Figures 3 and 4, the present invention includes a pushing element 72. The thrust element 72 is disposed inside the body 32. The thrust element 72 can be a wavy spring piece or other similar element. The number of the thrust elements 72 can be increased according to actual needs. One end of the thrust element 72 is pushed against the bottom of the clutch piece 68 of the second clutch mechanism 64.
進一步,本發明更包含一墊片74及一軸套76。該軸套76包含一環部78及一管部80,其中該環部78形成在該管部80一端。該軸套76的該環部78位在該環體52的底部。 Further, the present invention further includes a gasket 74 and a sleeve 76. The sleeve 76 includes a ring portion 78 and a tube portion 80, wherein the ring portion 78 is formed at one end of the tube portion 80. The ring portion 78 of the sleeve 76 is located at the bottom of the ring body 52.
請參閱第4、7圖,該軸套76及該墊片74組裝在該輪轂心軸28的軸向。該管部80穿過該離合片68及該推力元件72且靠在該墊片74上。換言之,該推力元件72的一端靠在該墊片74,另一端靠在該離合片68。值得注意的是,該環部78的底面與該離合片68的該離合凸塊70的端面相靠,使得該離合片68與該環體52之間具有一活動間隙90。 Referring to Figures 4 and 7, the sleeve 76 and the spacer 74 are assembled in the axial direction of the hub spindle 28. The tube portion 80 passes through the clutch plate 68 and the thrust member 72 and rests on the spacer 74. In other words, one end of the thrust element 72 rests on the spacer 74 and the other end rests on the clutch plate 68. It should be noted that the bottom surface of the ring portion 78 abuts the end surface of the clutch block 70 of the clutch piece 68 such that the clutch plate 68 and the ring body 52 have a movable gap 90 therebetween.
其次在上述各構件的組合內部可以配置適當數量的轉動元件,例如軸承82、84、86和88,該輪轂心軸28穿過該本體32的軸向內部,且同時穿過各該軸承82~88。 Secondly, an appropriate number of rotating elements, such as bearings 82, 84, 86 and 88, may be disposed within the combination of the various components described above, the hub mandrel 28 passing through the axial interior of the body 32 and simultaneously passing through each of the bearings 82~ 88.
在第5圖中揭示該第一離合機構44的該滾柱54與該傳動環34間具有該離合間距60,在第7圖中揭示該離合片68與該環體52之間具有該活 動間隙90,如此可以使該環體52相對該離合片68相離且具有可活動性。 It is disclosed in FIG. 5 that the roller 54 of the first clutch mechanism 44 and the transmission ring 34 have the clutch spacing 60. In FIG. 7, the movable gap between the clutch plate 68 and the ring body 52 is disclosed. 90, the ring body 52 can be separated from the clutch plate 68 and can be made movable.
當該驅動塊42朝自行車前進方向轉動,該驅動塊42接觸到該環體52的該滾柱54,該環體52因相對該離合片68具有可活動性,所以該環體52與該滾柱54的組合可先行轉動一段距離,且不帶動該傳動環34及該本體32的組合。 When the driving block 42 rotates in the forward direction of the bicycle, the driving block 42 contacts the roller 54 of the ring body 52, and the ring body 52 has mobility with respect to the clutch piece 68, so the ring body 52 and the roller The combination of the posts 54 can be rotated a distance first without the combination of the drive ring 34 and the body 32.
請參閱第8、9圖,經前述該環體52與該滾柱54的組合先行轉動一段距離後,該離合卡制塊66接觸該離合片68的該離合凸塊70(見第8圖)。由於該推力元件72推抵在該離合片68的外部底面,使該離合片68具有預定的阻力作用。該離合卡制塊66接觸該離合片68,該環體52與該滾柱54的組合受到該離合片68所提供的預定阻力,故該驅動塊42再略轉動,該驅動面46可進一步的將各該滾柱54推向該傳動環34的該內壁面58。各該滾柱54受到該傳動環34的該內壁面58及該驅動塊42的該驅動面46的夾制,故該驅動塊42的轉動扭力可以傳遞到該傳動環34使得該本體32可以轉動。此時,該輪子(未顯示)的轉動方向為自行車(未顯示)的前進方向。 Referring to FIGS. 8 and 9, after the foregoing combination of the ring body 52 and the roller 54 is rotated for a distance, the clutch block 66 contacts the clutch projection 70 of the clutch piece 68 (see FIG. 8). . Since the thrust member 72 is pushed against the outer bottom surface of the clutch piece 68, the clutch piece 68 has a predetermined resistance effect. The clutching block 66 contacts the clutching piece 68. The combination of the ring body 52 and the roller 54 is subjected to a predetermined resistance provided by the clutching piece 68. Therefore, the driving block 42 is slightly rotated, and the driving surface 46 can be further Each of the rollers 54 is urged toward the inner wall surface 58 of the transmission ring 34. Each of the rollers 54 is sandwiched by the inner wall surface 58 of the transmission ring 34 and the driving surface 46 of the driving block 42. Therefore, the rotational torque of the driving block 42 can be transmitted to the transmission ring 34 so that the body 32 can be rotated. . At this time, the direction of rotation of the wheel (not shown) is the forward direction of the bicycle (not shown).
根據前述的說明內容,該驅動塊42轉動至該自行車向前移動,需經過該環體52轉動使該離合卡制塊66接觸該離合片68的轉動行程,以及該驅動塊42的該驅動面46將各該滾柱54推向該傳動環34的該內壁面58的轉動行程,因此本發明可藉由二段離合行程提高該自行車的啟動行程,進而令使用者有更充裕的時間可以進行變化姿勢或動作。 According to the foregoing description, the driving block 42 is rotated until the bicycle moves forward, and the rotation of the ring body 52 is brought into contact with the clutching piece 68, and the driving surface of the driving block 42 The step of pushing the rollers 54 toward the inner wall surface 58 of the transmission ring 34, so that the invention can increase the starting stroke of the bicycle by the two-stage clutch stroke, thereby allowing the user to have more time to perform. Change posture or movement.
請參閱第10圖,踩動該驅動塊42朝自行車後退方向轉動(踏板曲柄反向轉動),該止擋凸塊48可以接觸該滾柱54,且該滾柱54可以落入該容置凹空62內形成良好的定位狀態。如此該驅動塊42反向轉動可以帶動 該環體52與該滾柱54的組合,進而該滾柱54不與該傳動環34的該內壁面58接觸。請參閱第11圖,該環體52與該滾柱54的組合反向轉動,該離合卡制塊66與該離合片68的該離合凸塊70形成分離狀。故該本體32及該輪子(未顯示)不受該驅動塊42(見第10圖)的驅動或干涉。 Referring to FIG. 10, the driving block 42 is stepped toward the bicycle backward direction (the pedal crank is reversely rotated), the stopper projection 48 can contact the roller 54, and the roller 54 can fall into the receiving recess. A good positioning state is formed in the space 62. Thus, the reverse rotation of the driving block 42 can bring the combination of the ring body 52 and the roller 54 so that the roller 54 does not contact the inner wall surface 58 of the transmission ring 34. Referring to FIG. 11, the combination of the ring body 52 and the roller 54 is reversely rotated, and the clutch block 66 is separated from the clutch projection 70 of the clutch piece 68. Thus, the body 32 and the wheel (not shown) are not driven or interfered with by the drive block 42 (see Figure 10).
即便該環體52與該滾柱54的組合反向轉動,進而使該離合卡制塊66與該離合片68的該離合凸塊70形成相抵狀,因為該滾柱54與該傳動環34仍保持相離狀態,故該環體52與該離合片68反向轉動所產生的扭力不會傳遞到該傳動環34。 Even if the combination of the ring body 52 and the roller 54 rotates in the opposite direction, the clutch block 66 is formed to be in contact with the clutch projection 70 of the clutch piece 68 because the roller 54 and the transmission ring 34 are still Maintaining the disengaged state, the torsional force generated by the reverse rotation of the ring body 52 and the clutch plate 68 is not transmitted to the transmission ring 34.
請參閱第12圖,該輪子(未顯示)朝該自行車(未顯示)後退的方向轉動,例如自行車在一斜面由上向下滑動,該本體32產生轉動,但各該滾柱54與該傳動環34的該容置空間36的內壁面58相離,故該驅動構件38的該驅動塊42不產生轉動。換言之,與該驅動塊42連動的該踏板曲柄(未顯示)不會產生反向轉動,該踏板曲柄不會打到使用者。 Referring to Fig. 12, the wheel (not shown) is rotated in a direction in which the bicycle (not shown) is retracted. For example, the bicycle slides up and down on a slope, the body 32 generates rotation, but each of the rollers 54 and the transmission The inner wall surface 58 of the accommodating space 36 of the ring 34 is separated, so that the driving block 42 of the driving member 38 does not rotate. In other words, the pedal crank (not shown) interlocked with the drive block 42 does not cause reverse rotation, and the pedal crank does not hit the user.
請參閱第13圖,該驅動塊42的該驅動面46被設計為曲面,如此可以藉由藉由該曲面的曲度變化達到調整該驅動面46推動該滾柱54的行程距離。 Referring to FIG. 13, the driving surface 46 of the driving block 42 is designed as a curved surface, so that the driving distance of the roller 54 can be adjusted by adjusting the curvature of the curved surface.
請參閱第14圖,本發明的該離合片68的該離合凸塊70的長度可以加大,使得該離合凸塊70與該離合卡制塊66的間距縮小,如此可以達到調整該第二離合機構64的嚙合距離(離合行程)。進一步,該離合凸塊70與相鄰的二個該離合卡制塊66形成抵接狀態,則根據第9圖所揭示的內容,該驅動塊42轉動一小段距離後,即可利用該驅動面46推動該滾柱54靠向該傳動環34的該內壁面58,且該自行車可以向前移動。 Referring to FIG. 14 , the length of the clutch protrusion 70 of the clutch piece 68 of the present invention may be increased, so that the distance between the clutch protrusion 70 and the clutch card block 66 is reduced, so that the second clutch can be adjusted. The meshing distance of the mechanism 64 (clutch stroke). Further, the clutching projection 70 is in abutting state with the two adjacent clutching blocks 66. According to the disclosure of FIG. 9, the driving block 42 can be used for a short distance. 46 pushes the roller 54 against the inner wall surface 58 of the drive ring 34 and the bicycle can move forward.
根據第14圖所揭示的內容,本發明的實施例中可以不具備該第二離合機構64,如此該輪轂30僅受該第一離合機構44的該驅動面46所提供的一段離合行程產生轉動。 According to the disclosure of FIG. 14, the second clutch mechanism 64 may not be provided in the embodiment of the present invention, such that the hub 30 is only rotated by a clutch stroke provided by the driving surface 46 of the first clutch mechanism 44. .
請參閱第15圖,圖中揭示本發明具該第一離合機構44的設計方案。該第一離合機構44係包含複數該驅動面46、複數該止擋凸塊48及一離合構件50。各該驅動面46及該止擋凸塊48係形成在該驅動塊42的外表面。該離合構件50為一環體52的周邊配置複數滾柱54,該環體52的底部為一穿孔92。又該驅動面46為曲面,在該驅動面46及該止擋凸塊48間形有該容置凹空62,且該容置凹空62毗鄰止擋凸塊48。 Referring to Figure 15, the design of the first clutch mechanism 44 of the present invention is disclosed. The first clutch mechanism 44 includes a plurality of the driving surfaces 46 , a plurality of the stopper bumps 48 , and a clutch member 50 . Each of the driving faces 46 and the stop projections 48 are formed on an outer surface of the driving block 42. The clutch member 50 is provided with a plurality of rollers 54 at the periphery of a ring body 52. The bottom of the ring body 52 is a through hole 92. The driving surface 46 is a curved surface. The receiving recess 62 is formed between the driving surface 46 and the stopping protrusion 48 , and the receiving recess 62 is adjacent to the stopping protrusion 48 .
請參閱第15、16圖,該軸套76的該環部78對應該環體52的底部,該管部80的一端穿過該環體52及該推力元件72且該靠在該墊片74上。該推力元件72的一端靠在該墊片74,另一端靠在該離合構件50或該環體52的外表底部。如此本實施例僅以該第一離合機構44的該驅動面46提供一段離合行程。 Referring to Figures 15 and 16, the ring portion 78 of the sleeve 76 corresponds to the bottom of the ring body 52. One end of the tube portion 80 passes through the ring body 52 and the thrust member 72 and rests on the spacer 74. on. One end of the thrust element 72 rests on the spacer 74 and the other end abuts against the clutch member 50 or the outer bottom of the ring body 52. Thus, the embodiment provides only a clutch stroke with the drive surface 46 of the first clutch mechanism 44.
以上乃本發明之較佳實施例以及設計圖式,惟較佳實施例以及設計圖式僅是舉例說明,並非用於限制本發明技藝之權利範圍,凡以均等之技藝手段、或為下述「申請專利範圍」內容所涵蓋之權利範圍而實施者,均不脫離本發明之範疇而為申請人之權利範圍。 The above is a preferred embodiment and the design of the present invention. The preferred embodiments and the drawings are merely illustrative and not intended to limit the scope of the invention. The scope of the rights covered by the content of the "Scope of Patent Application" is not within the scope of the invention and is the scope of the applicant's rights.
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