自転車用シフトユニット

Title:

自転車用シフトユニット

Document Type and Number:

Japanese Patent JP3587752

Kind Code:

B2

Abstract:

A shifting unit 12 for a bicycle is basically provided with a mounting member 21, a first shifting lever 23, a first biasing member 24, a second shifting lever 25, a second biasing member 26 and release mechanism 27. Many of the parts of the shifting unit 12 are constructed by pressing a metal sheet material. The first shifting lever 23 is pivotally coupled to the mounting member 21 between at least first, second and third shift positions, with the second shift position being located between the first and third shift positions. The first biasing member 24 applies a biasing force that urges the first shifting lever 23 from the second and third shift positions towards the first shift position. The second shifting lever 25 is pivotally coupled to the mounting member 21 between a set position and a release position. The second biasing member 26 applies a biasing force that urges the second shifting lever 25 from the release position to the set position. The release mechanism 27 is operatively coupled between the first and second shifting levers 23, 25 to hold the first shifting lever 23 in one of the first, second and third shift positions against the first biasing force of the first biasing member 24. The release mechanism 27 is moved to selectively release one of the second and third locking portions from the first shifting lever 23 upon rotation of the second shifting lever 25 from the set position to the release position such that the first shifting lever 23 moves one only position.

Inventors:

Takuro Yamane

Application Number:

JP2000018484A

Publication Date:

November 10, 2004

Filing Date:

January 27, 2000

Export Citation:

Click for automatic bibliography generation Help