JPS5683650A - Automatic speed change gear in crank gear for bicycle - Google Patents
Automatic speed change gear in crank gear for bicycleInfo
- Publication number
- JPS5683650A JPS5683650A JP16181979A JP16181979A JPS5683650A JP S5683650 A JPS5683650 A JP S5683650A JP 16181979 A JP16181979 A JP 16181979A JP 16181979 A JP16181979 A JP 16181979A JP S5683650 A JPS5683650 A JP S5683650A
- Authority
- JP
- Japan
- Prior art keywords
- gear
- crank
- bicycle
- speed change
- automatic speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Transmission Devices (AREA)
- Transmissions By Endless Flexible Members (AREA)
Abstract
PURPOSE: To easily conduct an automatic speed change in a wide range by deviating the crank gear when a torque not smaller than a preset value is applied to a crank rod.
CONSTITUTION: When the bicycle is running on flat ground, the crank gear 1 is rotated coaxially with the crank rod 2 without sliding between nipping plates 3, 4, so that the wheel is rotated normally. During a rapid acceleration or the ascent of a slope, since the torque not smaller than the preset value is applied to the wheel, springs 5 are deflected in the direction of the torque being applied, the crank gear 1 slides between the nipping plates 3, 4 and the axis of the gear 1 is moved and deviated. Accordingly, the wheel is automatically decelerated.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16181979A JPS5683650A (en) | 1979-12-12 | 1979-12-12 | Automatic speed change gear in crank gear for bicycle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16181979A JPS5683650A (en) | 1979-12-12 | 1979-12-12 | Automatic speed change gear in crank gear for bicycle |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5683650A true JPS5683650A (en) | 1981-07-08 |
Family
ID=15742504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16181979A Pending JPS5683650A (en) | 1979-12-12 | 1979-12-12 | Automatic speed change gear in crank gear for bicycle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5683650A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5070744A (en) * | 1990-07-30 | 1991-12-10 | Wu Ching Jung | Structure of bicycle chain transmission |
US10160514B1 (en) * | 2017-06-07 | 2018-12-25 | Drivetrain Tech Solution Inc. | Bicycle crankset |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5427146A (en) * | 1977-07-30 | 1979-03-01 | Suzuki Motor Co | Automatic speed change chain transmission device |
-
1979
- 1979-12-12 JP JP16181979A patent/JPS5683650A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5427146A (en) * | 1977-07-30 | 1979-03-01 | Suzuki Motor Co | Automatic speed change chain transmission device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5070744A (en) * | 1990-07-30 | 1991-12-10 | Wu Ching Jung | Structure of bicycle chain transmission |
US10160514B1 (en) * | 2017-06-07 | 2018-12-25 | Drivetrain Tech Solution Inc. | Bicycle crankset |
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