| 摘要 |
A transmission apparatus (T) is capable of retaining an endless transmission chain (48) on a rotatable member (30, 40), even where a small inter-axis distance remains between two rotatable shafts (11, 24) to which each of two rotatable members (30, 40) is drivingly connected. The transmission (T) includes a drive sprocket member (30) for connecting to a main drive shaft (11). The transmission (T) also includes a driven sprocket member (40), connected to the output shaft (24) in parallel with the main drive shaft (11) and including a plurality of transmission sprockets (41-47). The transmission (T) further includes a chain (48) interconnecting both sprocket members (30, 40), and a transmission shift mechanism (M2) for positioning the chain (48) among the transmission sprockets (31, 41-47). The drive sprocket member (30) is supported at the main drive shaft (11) in the rotary center line direction, in such a way that the chain (48) is applied to both sprocket members (30, 40) in parallel with a plane crossing at a right angle with the rotary center line of the main drive shaft (11).
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