Automatic bicycle speed variator

An automatic transmission and bicycle technology, which is applied to bicycle gear shifting mechanisms, bicycle accessories, vehicle gearboxes, etc., can solve the problems of large axial transmission resistance, difficult shifting control, and inflexible shifting control, and achieve flexible shifting and shifting control. easy effect
CN1847083AInactive Publication Date: 2006-10-18็จ‹่พ‰
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
็จ‹่พ‰
Publication Date
2006-10-18
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The automatic bicycle speed variator mounted on the shaft has power input chain wheel, speed varying output hub, speed variator and speed variation controller inside the hub casing. The speed variator includes three planetary gear trains with separated speed varying ratchet wheel and three ratchets separately fitting these three ratchet wheels inside the hub casing. The speed variation controller includes one second and one third centrifugal block balancing discs with hinged centrifugal block each, and the each of the centrifugal blocks has axial ratchet shifting rod connected to the ratchet. In the automatic bicycle speed variator, the ratchets and the ratchet wheels for the medium speed and high speed are controlled with the centrifugal blocks of different masses, so that the present invention has flexible speed variation and easy speed variation control.
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Description

technical field

[0001] The invention relates to a solid-shaft automatic transmission for bicycles, in particular to a speed change device and a speed-change control device for the solid shaft automatic transmission for bicycles. Background technique

[0002] In the prior art, Chinese patent ZL 2004 2 0070090.3 discloses a solid-shaft automatic transmission for bicycles. The casing has a power input sprocket on the axle at one end of the casing, and a transmission output hub at the other end of the casing. There is a transmission device and a transmission control device inside the casing. The transmission device is a set of planetary gears coaxial with the axle. There is a ratchet pawl transmission device between the planetary gear system and the hub, and there are three speed gears of low, medium and high between the planetary gear system and the power input sprocket due to the different input parts to the planetary gear system; the speed change control device There is a ce...

Claims

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