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Electrically-assisted pedal cycles

A technology of electric assist and bicycle, applied in the direction of electric vehicles, vehicle components, vehicle energy storage, etc.

Pending Publication Date: 2022-01-28
EBIKE SYSTEMS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Then came the question of switching on and off the extra electric assist in a controlled and smooth manner

Method used

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  • Electrically-assisted pedal cycles
  • Electrically-assisted pedal cycles
  • Electrically-assisted pedal cycles

Examples

Experimental program
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Embodiment Construction

[0048] In the figures, like references indicate similar or corresponding parts.

[0049] It should be understood that various features described below and / or illustrated in the drawings are preferred but not required. Combinations of features described and / or illustrated are not to be regarded as the only possible combinations. Unless stated to the contrary, individual features may be omitted, changed or combined in different combinations where feasible within the scope of the appended claims.

[0050] figure 1 A motor cycle in the form of a bicycle 10 is displayed. The bicycle 10 is similar to a conventional bicycle with steerable wheels 20 at the front and drivable wheels 30 at the rear. The bicycle 10 also has the conventional arrangement of pedals 40 on crank arms 50 that drive a front toothed gear 60 connected by a chain 70 to a rear sprocket 80 mounted coaxially with the rear wheel 30 . However, the bicycle 10 differs from a conventional bicycle in that the rear spro...

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Abstract

A drive system for a cycle in the form of a pedelec (10) has an input (2) that receives drive from a pedal (40) of the cycle and rotates about axis (1). An output (100) rotates about axis (1) to drive a wheel (30) of the cycle. An electrical machine (5, 6) provides motor drive to the output (100). A drive train receives drive from the electrical machine (5, 6) and pedal (40) and transmits drive to the output (100). The drive train comprises first and second epicyclic gear sets EP-1, EP-2, each of which comprises a sun gear (11, 21), a planet carrier (13, 23), a plurality of planet gears (12, 22) and an annulus gear (14, 24). Both annulus gears (14, 24) are connected to the output (100) to rotate with it. Both sun gears (11, 21) are driven by the electrical machine (5, 6). The first epicyclic gear set EP-1 transmits drive from its sun (11) to its annulus (14) with its planet carrier (13) in a fixed position. The second epicyclic gear set EP-2 transmits drive from a pedal (40) to its annulus (24) via its planet carrier (23). Optionally, electrical assistance may be provided both when the cyclist is pedalling and when the cyclist is not pedalling.

Description

technical field [0001] The present invention relates to electric assisted bicycles. Background technique [0002] Bicycles come in many forms. One conventional form of bicycle is driven all the way by simply applying force to the pedals by the cyclist, and such bicycles are sometimes referred to as "push bicycles". Another newer form of bicycle is the electric assisted bicycle, now commonly referred to as an "electric bicycle", in which electricity is used to assist or replace the force of the rider. Both conventional bicycles and electric bicycles can have two, three or four wheels, and in some cases even more. In this document, the term "bicycle" is used to encompass both conventional bicycles and electric bicycles. [0003] As mentioned, in electric bicycles, electricity is used to assist or in some cases replace the rider's force. Accordingly, electronic bicycles contain means for storing electrical energy, such as a battery, and an electric motor arranged for propul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62M11/16B62M11/18B62M6/65
CPCB62M11/16B62M11/18B62M6/65B62M6/55B62M6/60
Inventor L·龚
Owner EBIKE SYSTEMS LTD
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