TW357127B - Power assist apparatus of power assisted bicycle - Google Patents
Power assist apparatus of power assisted bicycleInfo
- Publication number
- TW357127B TW357127B TW085103398A TW85103398A TW357127B TW 357127 B TW357127 B TW 357127B TW 085103398 A TW085103398 A TW 085103398A TW 85103398 A TW85103398 A TW 85103398A TW 357127 B TW357127 B TW 357127B
- Authority
- TW
- Taiwan
- Prior art keywords
- power
- assist
- footpedal
- propelling
- shaft
- Prior art date
Links
Landscapes
- Automatic Cycles, And Cycles In General (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
A power assist apparatus of power assisted bicycle, comprizing a crank shaft extending in the transverse direction of the body of the bicycle and rotatably driven by a footpedal-propelling; an electric motor forgenerating an assist power; a power composition shaft rotably supported and extending in parallel with the crank shaft; a footpedal-propelling power transmission mechanism for transmitting the footpedal-propelling power to the power composition shaft at a right angle to the axis of the power composition shaft; an assist power transmission mechanism for transmitting the assist power to the power composition shaft at a right angle to the axis of the power composition shaft in the direction opposite to the direction in which the footpedal-propelling power is transmitted; a power composition output mechanism for outputting the rotating power of the power composition shaft to a driven wheel; a moment sensor for sensing a moment difference between 2 moments acting on the power composition shaft from 2 opposite directions when the footpedal-propelling power and the assist power are transmitted; and a control unit for claculating the assist ratio of the assist power to the footpedal-propelling power based on the magnitude and direction of the moment difference coming in from the moment sensor and controlling the output of the electric motor so that the assist ratio is kept at a constant ratio.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7172095A JPH08268375A (en) | 1995-03-29 | 1995-03-29 | Power assisted bicycle |
Publications (1)
Publication Number | Publication Date |
---|---|
TW357127B true TW357127B (en) | 1999-05-01 |
Family
ID=13468648
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW085103398A TW357127B (en) | 1995-03-29 | 1996-03-21 | Power assist apparatus of power assisted bicycle |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPH08268375A (en) |
TW (1) | TW357127B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012200232A1 (en) * | 2012-01-10 | 2013-07-11 | Robert Bosch Gmbh | Drive device for an electric bicycle with force measurement for driver request detection |
JP5628880B2 (en) * | 2012-10-25 | 2014-11-19 | 株式会社シマノ | Drive unit |
-
1995
- 1995-03-29 JP JP7172095A patent/JPH08268375A/en active Pending
-
1996
- 1996-03-21 TW TW085103398A patent/TW357127B/en active
Also Published As
Publication number | Publication date |
---|---|
JPH08268375A (en) | 1996-10-15 |
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