Single speed transmission for bicycle has front drive unit with front driving ring gear and front rotating shaft, and rear driven unit with rear shaft rotatably mounted on rear fork, and rear driven ring gear fitted on rear hub

摘要

The single speed transmission for a bicycle has a front drive unit (10) with a front driving ring gear (12) and a front rotating shaft (11) with a center section rotatably fitted inside the bottom bracket bearing junction tube (110), and a rear driven unit (20) with a rear shaft rotatably mounted on the rear fork (140) and a rear driven ring gear (23) fitted on a rear hub. A connecting unit (30) is installed on the main tube (130) between the front drive unit and rear driven unit, and has a support holder (31) installed on the underside of the main tube and is located adjacent to the bottom bracket bearing junction tube.