Bicycle pedal bearing drive
A driving device, bicycle technology, applied in the direction of wheel transmission, rider drive, vehicle components, etc., can solve low efficiency, low torque density, can not be under load or can only be shifted under partial load And other issues
Active Publication Date: 2022-04-22
ROBERT BOSCH GMBH
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AI Technical Summary
Problems solved by technology
However, friction ring transmissions have low efficiencies due to the force transmission via frictional locking, which without motor support is detrimental to battery range and especially at speeds above 7 m / s (about 25 km / h). Significant impact on driving performance
[0004] A treadle bearing drive based on a spur gear transmission with an integrated shifting device (for example as described in DE 10 2010 051 727 A1 or EP 2 881 315 A2) has the disadvantage of a low torque density and the Shifting is not possible under load or only under partial load in lower gears
Furthermore, such a shifting device does not have an electromechanically actuated automatic gear selection
The solution as in WO 2013 / 160477 A1 has the disadvantage that the shifting does not take place without traction interruption
Method used
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[0038] figure 1 A schematic schematic diagram showing the structure of a pedal bearing drive 1 for a bicycle. figure 2 A schematic side view of the pedal bearing drive 1 is shown. The pedal bearing drive 1 has an integrated load-shiftable 7-speed transmission unit 3 .
[0039] The pedal bearing drive 1 has a pedal crankshaft 2 which can be driven by the rider of the bicycle equipped with the pedal bearing drive 1 . Force is transmitted from pedal crankshaft 2 to transmission assembly 3 , in particular via freewheel 17 . The pedal crankshaft 2 transmits the torque to the first planet carrier 18 of the first planetary gear 4 . The first planet carrier 18 is designed in two stages and therefore has a first stage 22 and a second stage 23 . In this case, the first stage 22 meshes with the first sun gear 8 and the second stage meshes with the second sun gear 9 . The first sun gear 8 is connected via a freewheel 17 to the first selector finger 12 , while the second sun gear 9 i...
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The present invention relates to a pedal bearing drive of a bicycle, comprising a pedal crankshaft arranged to be operated by a rider; a transmission assembly arranged on the pedal crankshaft and comprising a plurality of planetary transmissions connected to each other; The gearshift slide, which is arranged in a rotationally fixed manner relative to the pedal crankshaft, is displaceable in the axial direction of the pedal crankshaft, wherein the sun gears of the planetary gear each have a selector finger, which is relative to the foot The pedal crankshaft extends radially outwards, wherein the shift slide has a locking element, wherein the lock element overlaps at least one shift finger in the radial direction of the pedal crankshaft, so that due to the movement of the shift slide, through the shift The overlapping of the finger and the blocking element in the axial direction and the radial direction of the pedal crankshaft prevents the single or multiple shift fingers from rotating around the pedal crankshaft.
Description
technical field [0001] The invention relates to a bicycle pedal bearing driving device. The bicycle has, in particular, an electric motor as auxiliary drive and is therefore an electric scooter (Pedelec) or an electric bicycle (Ebike). In the scope of the description of the present invention, including and having the above two words are used as synonyms. Background technique [0002] An electric bicycle is known from the prior art, that is to say an electric scooter or electric bicycle, which has a central motor and a bicycle gearshift for adapting the limited driving force of the rider to different driving resistances . In electric bicycles with a pedal bearing drive, a chain shift or hub shift is usually mounted on the rear wheel, while the electric drive is arranged on the pedal bearing. [0003] From the publications DE 10 2012 109 637 A1 and DE 10 2014 000 898 A1 a pedal bearing drive with an integrated shifting gear is known, which has a hollow shaft coaxial to the ...
Claims
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IPC IPC(8): B62M11/14B62M6/55
CPCB62M6/55B62M11/14B62M3/003B62M11/145B62M11/18
Inventor M·欣特考森P·基米希
Owner ROBERT BOSCH GMBH