Title:
PEDALING MECHANISM USING WEIGHT AS DRIVING ASSISTANCE FORCE
Document Type and Number:
Japanese Patent JP2022061441
Kind Code:
A
Abstract:
To provide a bicycle capable of correcting reduction of tread force transmission efficiency in a region where a pedal position is near a top dead center/bottom dead center during pedaling.SOLUTION: Under the condition of a large traveling load, strong tension is applied on a chain 4, and a crank sprocket 3 rotates more than chain pulling. This extra rotation becomes a climbing operation of the crank sprocket 3 on the chain 4, thus raising the crank sprocket 3, a BB shell part 18, a seat pipe part 6, a seat post 8, and a saddle 9. Occupant weight is applied on the raised crank sprocket 3. Thus, at this time, even when a position of a pedal 1 reaches a region of a top dead center/bottom dead center, a force for pulling down the chain 4 continues, and reduction of a driving force is corrected in a region near the top dead center/bottom dead center by applying a correction force.SELECTED DRAWING: Figure 1
Inventors:
KODAMA TOSHIYUKI
Application Number:
JP2020176987A
Publication Date:
April 18, 2022
Filing Date:
October 06, 2020
Export Citation:
Assignee:
KODAMA TOSHIYUKI
International Classes:
B62M1/18; B62J1/06; B62J1/08; B62K17/00