Multi-ratio transmission system with parallel vertical and coaxial planet gears

摘要

A multi-ratio transmission system with parallel vertical and coaxial planet gears is provided, including: multiple planet gear sub-systems, a coupling assembly, a setting element, a setting element controller, an annular gear, a cylindrical casing, a sprocket and a central axle. The planet gear sub-systems are disposed coaxially in series along a first axis. Each of the planet gear sub-system includes a sun gear and at least one planet gear. The coupling assembly transmits the rotation between every two adjacent planet gear sub-systems. The setting element optionally engages with the sun gear. The annular gear is engaged to the planet gear of at least one planet gear sub-system. The cylindrical casing encloses the planet gear sub-systems. The sprocket is installed onto the planet gear sub-systems through a one-way clutch. The central axle enables the hollowed tube of the setting element controller to rotate around the central axle.

主权项

1. A multi-ratio transmission system with parallel vertical and coaxial planet gears, comprising:
a plurality of planet gear sub-systems, being coaxially disposed in series along a first axis, each of said planet gear sub-system comprising:
a sun gear, being coaxially disposed along said first axis, wherein said sun gear rotates around said first axis optionally; andat least one planet gear, being coaxially disposed along a second axis which is vertical to said first axis, wherein said at least one planet gear rotates around said second axis; a coupling assembly disposed between every two adjacent said planet gear sub-systems so as to transmit rotation of said planet gear of the former said planet gear sub-system to said planet gear of the latter said planet gear sub-system; a setting element disposed corresponding to each of said planet gear sub-systems, wherein said setting element optionally moves in the direction of said first axis so as to optionally engage with said sun gear of said planet gear sub-system; a setting element controller, having a hollowed tube disposed coaxially with said first axis to rotate around said first axis within a range of predetermined angles, wherein said hollowed tube has an outer circumferential surface, and a cam groove is formed on said outer circumferential surface in the circumferential direction corresponding to each of said setting element of said planet gear sub-system, thereby allowing said setting element to optionally move along said first axis and to optionally engage with said sun gears of said planet gear sub-systems; an annular gear engaged to said planet gear of at least one said planet gear sub-system; a cylindrical casing enclosing said planet gear sub-systems, wherein said cylindrical casing has a front end for installing said annular gear; a sprocket, installed onto said planet gear sub-systems through a one-way clutch, wherein said sprocket is installed with an external transmission system to drive said planet gear sub-systems to rotate; and a central axle, being disposed coaxially with said first axis, wherein said central axle is inserted into a center through hole of said hollowed tube of said setting element controller by relative rotation, thereby enabling said hollowed tube to rotate around said central axle.