• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:NL2012611A
    申请号:NL2012611
    申请日:2014-04-12
    公开日:2016-01-19
    发明作者:Marie Van Druten Roëll；Gerard Vroemen Bas；Gijsbertus Antonius Van Den Brand Johannes
    申请人:Dti Advanced Tech B V；
    IPC主号:
    专利说明:

    Bicycle with only one front sprocket DESCRIPTION:
    FIELD OF THE INVENTION
    The invention relates to a bicycle comprising: a frame provided with a front fork and a rear fork, as well as an axle housing, a front and a rear wheel present in the front and rear fork respectively, a drive shaft mounted in the axle housing, at least one front axle sprocket connected to the bottom bracket, a number of rear sprockets connected to a transmission housing connected to a rear wheel wheel hub, a chain wrapped around the front sprocket and one of the rear sprockets, a transmission with at least two switchable transmissions between the drive shaft and the rear wheel and is provided with actuating means for switching between the transmissions, and operating means for operating the actuating means.
    State of the art
    Such a bicycle is generally known. It is advantageous to electrically actuate the adjusting mechanism for changing the transmission between the bottom bracket and the wheel hub. This makes it possible to dispense with a mechanical connection between the control buttons / levers and the adjusting mechanism. However, an electrical actuation usually requires a relatively large amount of energy, so that this option is often dispensed with.
    Summary of the invention
    It is an object of the invention to provide a bicycle of the type described in the preamble in which the adjusting mechanism for changing the transmission between the crankshaft and the wheel hub is electrically operable and requires little energy. For this purpose, the bicycle according to the invention is characterized in that the bicycle comprises only one front sprocket and that the actuating means are electrically designed and the operating means (operating buttons / levers) are electrically coupled to the actuating means. Relocating the chain from one chain wheel to another on the bottom bracket takes relatively much energy because there is a large difference in diameter between the front chain wheels. By favorably choosing the transmissions of the transmission between the cassette housing and the wheel hub, a front derailleur can be dispensed with. The transmission can be operated with relatively little energy because there is no need to shift a chain. As a result, the eight-point means for changing the transmission between the crankshaft and the wheel hub of the bicycle according to the invention require little energy, so that it is extremely suitable for electrically performing this and its operation.
    The drive shaft is preferably formed by a bottom bracket and the shaft housing is formed by a bottom bracket housing. Furthermore, the transmission is preferably present between the transmission housing and the wheel hub of the rear wheel.
    A favorable embodiment of the bicycle according to the invention is characterized in that the bicycle comprises an electrically actuated rear derailleur and that the operating means are further electrically coupled to the actuating means of the rear derailleur. As a result, the complete acceleration mechanism of the bicycle is electrically designed and the electrical wiring can be provided on one side of the frame so that few electrical wires will suffice.
    A further favorable embodiment of the bicycle according to the invention is characterized in that the operating means are wirelessly coupled to the actuating means of the transmission and / or the rear derailleur.
    A still further favorable embodiment of the bicycle according to the invention is characterized in that the bicycle comprises a control unit which controls the derailleur and / or the transmission based on a desired desired transmission between crankshaft and wheel hub. As a result, the user does not have to separately select the transmission of the transmission and the shifting of the chain on the rear sprockets, but this can be carried out automatically by the control unit.
    Another favorable embodiment of the bicycle according to the invention is characterized in that the operating means comprise an operating button which is present on the handlebar of the bicycle, as well as a display or indicator which indicates the gear in which the transmission is. Although the user himself has to choose the transmission of the transmission and the relocation of the chain on the rear sprockets, he is thereby assisted by the indication of which transmission in the transmission has been selected.
    Preferably, the transmission is releasably connected to the wheel hub of the rear wheel. Furthermore, the rear sprockets are detachably connected to the transmission. The wheel hub and the transmission are preferably located on a hollow wheel axle.
    A further embodiment of the bicycle according to the invention is characterized in that through the hollow wheel axle there is a stub axle through which the wheel axle is connected to the rear fork. The rear wheel can be taken out of the rear fork by loosening the thru axle and removing it from the hollow wheel axle.
    The hollow wheel axle preferably comprises a first axle part on which the wheel hub is located, as well as a second axle part on which the transmission is located.
    A still further embodiment of the bicycle according to the invention is characterized in that the thru axle is only present through the first axle part and the second axle part is connected to the rear fork. The rear wheel can be taken out of the rear fork by loosening the stub axle and removing it from the first axle part, the second axle part with the transmission present thereon remaining connected to the rear fork.
    Brief description of the drawings
    The invention will be explained in more detail below with reference to an exemplary embodiment of a rear wheel axle of a bicycle with a wheel hub and a transmission according to the invention, shown in the drawings. Hereby shows:
    Figure 1 shows an embodiment of the bicycle according to the invention;
    Figure 2 shows a wheel axle of a rear wheel axle with a wheel hub thereon and a transmission in section;
    Figure 3 and Figure 4 show different preferred positions of the operable freewheel pawls in the freewheel connected to the planetary gear set;
    Figure 5 shows the rear wheel axle with wheel axle and thru axle fixed in wheel axle carriers in section;
    Figure 6 shows the individual wheel axle of the rear wheel axle fixed in the wheel axle carrier in section;
    Figure 7 shows a cross-section of the wheel axle carriers of a rear fork of a bicycle frame with the wheel axle of the rear wheel axle removed;
    Figure 8 is a sectional view of the individual stub axle of the rear wheel axle;
    Figure 9 shows the wheel axle carriers shown in Figure 7 in perspective;
    Figure 10 is a sectional view of a wheel axle of another rear wheel axle of the bicycle according to the invention; and
    Figure 11 is a sectional view of a wheel axle of yet another rear wheel axle of the bicycle according to the invention.
    Detailed description of the drawings
    Figure 1 shows an embodiment of the bicycle according to the invention. The bicycle 301 has a frame 303 provided with a front fork 305 and a rear fork 307, as well as a bottom bracket housing 309, a front and a rear wheel 311, 313 present in the front and rear fork, pedals 315 which are connected to a bottom bracket 317 mounted on a bearing in the bottom bracket housing 309, at least one front sprocket 319 which is connected to the bottom bracket 317, is a plurality of rear sprockets 321 which are connected to a transmission housing 33 which is connected to a wheel hub 201 of the rear wheel 311, and to the front sprocket and a chain 323 struck from the rear sprockets, a transmission 31 with at least two switchable transmission between the transmission housing 33 and the wheel hub 201 of the rear wheel 313 and provided with actuating means 81 (see Figure 2) for switching between the transmissions, and operating means 325 for operating the actuating means.
    The bicycle 301 has only one front sprocket 319 and the actuating means 81 of the transmission 31 are electric and the operating means 325 are electrically coupled to the actuating means. The bicycle 301 has an electrically actuated rear derailleur 327 and the operating means 325 are further electrically coupled to the actuating means 81 of the rear derailleur.
    The operating means 325 are wirelessly coupled to the actuating means 81 of the transmission 31 and / or the rear derailleur 327. The bicycle also has a control unit 329 which, based on an entered desired transmission between crankshaft 317 and wheel hub 201, the rear derailleur 327 and / or the controls transmission 31. The operating means 325 have an operating button 331 which is present on the handlebar 333 of the bicycle, as well as a display 335 or indicator which indicates in which gear the transmission is.
    In Figure 2, a wheel axle 3 of a rear wheel axle with a wheel hub 201 mounted thereon and a transmission 31 according to the invention connected to the wheel axle and the wheel hub are shown in section. The wheel axle 3 is hollow and is provided near an end with an internal toothing 13 (splines) for a form-fitting connection with one of the wheel axle carriers (dropouts) of a rear fork of a bicycle frame (see figure 3). Via this form-locked connection, the wheel axle can support torque, which torque is a reaction torque of the transmissions between a transmission housing 33 of the transmission and the wheel hub 201. The wheel hub 201 and the transmission 31 connected thereto are mounted on the wheel axle 3. The wheel hub has two spoke flanges 203 and 205 to which spokes (not shown) of a wheel are attached. A sprocket carrier (not shown) with sprockets can be mounted on the transmission housing 33 (driver body) of the transmission 31. For this purpose, the transmission housing 33 is provided with connecting means (teeth 35 and 37 and internal thread 39) via which the sprocket carrier provided with further connecting means can be connected to the transmission housing.
    The transmission 31 has two switchable transmissions between the transmission housing 33 and the wheel hub 201, so that only one sprocket on the bottom bracket can suffice, so that a front derailleur of a bicycle can be omitted. The transmission 31 is coupled to the wheel hub 201 via a key tooth 41 (splines). This key tooth consists of an internal tooth 207 present in the wheel hub and an external tooth 43 on an output coupling bush 45 of the transmission. The transmission 31, together with the hollow wheel axle 3 on which it is mounted, forms a unit that can be pushed in its entirety into the wheel hub 201 and between wheel axle carriers 101 and 103 together with the wheel hub (and the rest of the rear wheel of which the wheel hub forms part) can be slid from a rear fork of a bicycle frame and taken out.
    The transmission 31 has a planetary gear set with three rotation bodies, a first rotation body of which is formed by a ring wheel 47 which is connected to the transmission housing 33, a second rotation body is formed by a planet carrier 49 on which a number of planet wheels 51 are mounted and which is connected to coupling means formed by the coupling sleeve 45 provided with the external key toothing 43, and a third rotating body is formed by a sun gear 53 which is coupled to the wheel axle 3.
    The first rotation body 47 is connected to the second rotation body 51 via a first switchable freewheel 71 and the third rotation body 53 is connected to a second switchable freewheel 75 via which the third rotation body can be connected to the wheel axle 3. The transmission 31 further has a switching mechanism for switching the switchable freeways 71 and 75. The switch mechanism is located in the space 81 within the transmission housing 33 and has a sliding ring 79 which can actuate both switchable freeways by axially displaceable. The switching mechanism further has an electric actuator for displacing the sliding ring 79. This actuator has a stator mounted on the wheel axle 3.
    The sliding ring 79 and the actuator are present on the side of the planetary gear set remote from the coupling means 41 in the transmission housing 33. The actuator is provided with connecting pins which protrude through one or more openings in the wheel axle 3 and are insulated from the wheel axle.
    Figures 3 and 4 show two preferred positions of operable freewheel pawls 73 and 77 of the freewheels 71 and 75 in the planetary gear set. The ring wheel a is hereby driven and the planet carrier c forms the output. The sun wheel s can be coupled to the wheel axle 3. Figure 3 shows a first embodiment of the planetary gear set provided with operable freewheel pawls 73 and 77. The wheel axle 3 is hereby attached to the frame of the bicycle. Freewheel pawl 77 is rotatably connected to the wheel axle 3 and engages the planet carrier c. Freewheel pawl 73 is rotatably connected to the planet carrier c and engages the ring wheel a.
    Figure 4 shows a second embodiment of the planetary gear set provided with operable freewheel pawls 73 and 77. The wheel axle 3 is hereby attached to the frame of the bicycle. Freewheel 77 is rotatably connected to the wheel axle and engages the sun gear s. Freewheel pawl 73 is rotatably connected to the ring wheel a and engages the planet carrier c.
    Between the coupling means (coupling bush 45) and the transmission housing 33 there is a first seal, which is formed by a left-hand sealed transmission housing bearing 55 (first sealed ball bearing), which is connected to the transmission housing with the outer peripheral side and connected to the coupling means with the inner peripheral side (coupling bus 45). Between the coupling means (coupling bush 45) and the wheel axle 3, a second seal is present, which is formed by a support bearing 57 (sealed needle bearing). The sealing ring 59 of the support bearing is connected with the outer peripheral side to the coupling means (coupling bush 45). Between the transmission housing 33 and the wheel axle 3 there is a third seal which is formed by a right-hand sealed transmission housing bearing 61 (second sealed ball bearing) which is connected to the transmission housing with the outer peripheral side. The supporting bearing 57 is connected with the outer peripheral side to the coupling means (coupling bush 45) and is present between the second and third seal. The rollers 61 of the support bearing run over a rolling surface 63 present on the wheel axle 3.
    The coupling means formed by the coupling bush 45 provided with external key toothing co-operate with further coupling means formed by the internal key toothing 207 present in the wheel hub 201. At the other end, the coupling bush 45 is provided with a flange 65 which forms part of or is connected to the second rotary body. The left-hand transmission housing bearing 55 is present on the coupling bush 45 between the external key toothing 43 and the flange 65. The wheel hub 201 is mounted on the wheel axle 3 near a first end via a wheel hub bearing 209 and is provided at a second end with the further coupling means formed by the internal key toothing 207.
    Figure 5 shows the rear wheel axle 1 fixed in the wheel axle carriers 101 and 103 of the rear fork of a bicycle in cross section. The rear wheel axle 1 consists of the hollow wheel axle 3 with a thru axle 5 through it. The rear wheel axle is provided with coupling support means for being able to support torque exerted on the wheel axle on a bicycle frame. These coupling support means are formed by an internal toothing 13 in the left-hand end of the hollow wheel axle, see figures 4 and 5, an internal toothing 113 in a coupling supporting arm 105 which is present in an opening 109 in the left-hand wheel axle carrier 101 and which is supported against the wheel axle carrier (see figure 9), and an external toothing 12 (see figures 5 and 8) on a bush 11 freely rotatable about a pin 7. The internal toothing 13 in the wheel axle 3 and the right-hand part of the bush 11 herein form a first form-locked connection, and the internal toothing 113 in the coupling support arm 105 and the left-hand part of the bushing 11 form a second form-locked connection. After removing the stub axle 5 by taking it axially out of the wheel axle, the wheel axle 3 can be taken out in the radial direction between the wheel axle carriers 101 and 103 of the rear fork, see figure 7.
    The pin 7 with the therefore freely rotatable bushing 11 and with a further pin 9 connected via a threaded connection to the pin 7 together form the stub shaft 5, see figure 8. The stub shaft is provided on the left-hand end with a lever 19 which is eccentric connected to a shaft 17 mounted on the ends of the pin 7, and forming a quick-release mechanism (see Fig. 9) for clamping the wheel axle 3 between the wheel axle carriers 101 and 103 of a bicycle frame. The free end of the further pin 9 is provided with external screw thread 21 which is screwed into a cap 107 provided with internal screw thread 115 and present in an opening 111 in the right-hand wheel axle carrier 103. The further pin 9 is provided at the end provided with screw thread 21 with a central recess 23, the inner wall of which is provided with two electrical contacts which are present next to each other in the axial direction. The right-hand wheel axle carrier 103 is provided with a cap 117, see figure 7, which is connected via a bridge plate 119 to the cap 107 and which extends in the middle of the opening 111 and forms a stretcher provided with two further electrical contacts which are axially are present next to each other in the direction and are in contact with the contacts in the right-hand end of the further pin 9 of the stub shaft 5.
    Figure 9 shows the wheel axle carriers 101 and 103 in perspective for illustration. In the openings 109 and 111 in the wheel axle carriers, inserts are provided in the form of a coupling support arm 105 provided with internal keying gear 113 and a hollow cap 107 provided with internal thread 115. The torque support arm 105 is supported in the direction of rotation 121 with an end 105B against the wheel axle carrier 101 so that it is secured against rotation and thereby can support torque.
    Figures 10 and 11 show rear wheels of two further embodiments of the bicycle according to the invention in cross section. The hollow wheel axle here consists of a first axle part 401 on which the wheel hub 405 is located, as well as a second axle part 403 on which the transmission 407 is located. The thru axle 409 is only present through the first axle part 401 and the second axle part 403 is connected to the rear fork 411 by means of a bolt 413. The rear wheel can be taken out of the rear fork by loosening the thru axle and removing it from the first axle part wherein the second axle part with the transmission present thereon remains connected to the rear fork.
    Although in the foregoing the invention has been elucidated with reference to the drawings, it should be noted that the invention is by no means limited to the embodiment shown in the drawings. The invention also extends to all embodiments deviating from the embodiment shown in the drawings within the scope defined by the claims.
    权利要求:
    Claims (13)
    [1]
    A bicycle (301) comprising: a frame (303) provided with a front fork (305) and a rear fork (307), as well as an axle housing, a front and a rear wheel (311, 313) present in the front and rear fork, respectively a drive shaft mounted in the axle housing, at least one front sprocket (319) connected to the crankshaft (317), a number of rear sprockets (321) connected to a transmission housing (33) connected to a wheel hub ( 201) of the rear wheel (311), a chain (323) wrapped around the front sprocket and one of the rear sprockets, a transmission (31) with at least two switchable transmissions between the drive shaft (317) and the rear wheel (313) and is provided with actuating means (81) for switching between the transmissions, and operating means (325) for operating the actuating means, characterized in that the bicycle (301) comprises only one front sprocket (319) and that the actuating means (81 ) of the transmission (31 ) are electrically designed and the operating means (325) are electrically coupled to the actuating means.
    [2]
    Bicycle according to claim 1, characterized in that the drive shaft is formed by a bottom bracket (317) and the axle housing is formed by a bottom bracket housing (309).
    [3]
    A bicycle according to claim 1 or 2, characterized in that the transmission (31) is present between the transmission housing (33) and the wheel hub (201) of the rear wheel (313).
    [4]
    A bicycle according to claim 1, 2 or 3, characterized in that the bicycle (301) comprises an electrically actuated rear derailleur (327) and that the operating means (325) are further electrically coupled to the actuating means (81) of the rear derailleur.
    [5]
    Bicycle according to one of the preceding claims, characterized in that the operating means (325) are wirelessly coupled to the actuating means (81) of the transmission (31) and / or the rear derailleur (327).
    [6]
    A bicycle according to any one of the preceding claims, characterized in that the bicycle comprises a control unit (329) which, based on an entered desired transmission between crankshaft (317) and wheel hub (201), the rear derailleur (327) and / or the control transmission (31).
    [7]
    A bicycle according to any one of the preceding claims, characterized in that the operating means (325) comprise an operating button (331) which is present on the handlebar (333) of the bicycle, as well as a display (335) or indicator which indicates in which gear the transmission state.
    [8]
    A bicycle according to any one of the preceding claims, characterized in that the transmission (31) is detachably connected to the wheel hub (201) of the rear wheel (313).
    [9]
    A bicycle according to any one of the preceding claims, characterized in that the rear sprockets (321) are releasably connected to the transmission (31).
    [10]
    A bicycle according to any one of the preceding claims, characterized in that the wheel hub (201) and the transmission (31) are located on a hollow wheel axle (3).
    [11]
    A bicycle according to any one of the preceding claims, characterized in that through the hollow wheel axle (3) a stub axle (5) is present via which the wheel axle is connected to the rear fork.
    [12]
    A bicycle according to any one of the preceding claims, characterized in that the hollow wheel axle comprises a first axle part (401) on which the wheel hub (405) is located, as well as a second axle part (403) on which the transmission (407) is located.
    [13]
    A bicycle according to claims 11 and 12, characterized in that the stub axle (409) is only present through the first axle part (401) and the second axle part (403) is connected to the rear fork (411).
    类似技术:
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    KR20130043603A|2013-04-30|Backward movement mechanism for auto bicycle and bicycle
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    同族专利:
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    JP2017506606A|2017-03-09|
    EP3154849A1|2017-04-19|
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    CN106660610A|2017-05-10|
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    CN106660610B|2021-12-24|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    NL2012340|2014-02-28|EP15726366.6A| EP3154849B1|2014-02-28|2015-03-02|Bicycle|
    PCT/NL2015/050127| WO2015130174A1|2014-02-28|2015-03-02|Bicycle|
    JP2016572224A| JP6772072B2|2014-02-28|2015-03-02|bicycle|
    CN201580023698.1A| CN106660610B|2014-02-28|2015-03-02|Bicycle with a wheel|
    US15/122,207| US20160362160A1|2014-02-28|2015-03-02|Rear wheel axle, as well as bicycle frame and rear wheel for a bicycle|
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