JPS5683650A - Automatic speed change gear in crank gear for bicycle - Google Patents

Automatic speed change gear in crank gear for bicycle

Info

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
Application number
JP16181979A
Other languages
Japanese (ja)
Inventor
Takatsugu Nakano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP16181979A priority Critical patent/JPS5683650A/en
Publication of JPS5683650A publication Critical patent/JPS5683650A/en
Pending legal-status Critical Current

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
JP16181979A 1979-12-12 1979-12-12 Automatic speed change gear in crank gear for bicycle Pending JPS5683650A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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