| 摘要 |
#CMT# #/CMT# The device has a rotating shaft (6) installed in a casing (1). A planetary gear mechanism (2) is engaged in the shaft and driven by external power conducting element (7) e.g. power transmission chain. The mechanism is engaged in a planetary gear unit (30) that drives a frame. The mechanism comprises sprocket wheels (21), and the unit (30) is engaged in an annular inner mechanism (4) that is placed at an external side of the unit (30). The mechanism (4) has sprocket wheel (41). A speed changing assembly (5) has a longitudinal slot (51) placed between projecting recesses (61) of the shaft. #CMT#USE : #/CMT# Device for changing speed of a vehicle e.g. passenger car. #CMT#ADVANTAGE : #/CMT# The device has a better design and improved performance, and can be manufactured in a simple, easy and rapid manner, while providing a large structural space. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of a vehicle speed changing device. 1 : Casing 2 : Planetary gear mechanism 4 : Annular inner mechanism 5 : Speed changing assembly 6 : Rotating shaft 7 : External power conducting mechanism 21, 41 : Sprocket wheels 30 : Planetary gear unit 51 : Longitudinal slot 61 : Projecting recesses. |
