| 摘要 |
<p>CHAIN GUIDE STRUCTURE FOR CHAIN DRIVE TYPE TRANSMISSION In the chain guide structure for a chain drive type transmission mechanism, the chain guide (30) fastened to the engine case (11) is so provided as to cover a drive chain (24) wound around a drive sprocket (23), at a part of the periphery of the drive sprocket (23) and in an arcuate form. The chain guide (30) is formed with a brittle portion (B) lower in strength than other portions thereof. The brittle portion (B) is located above and in the vicinity of a front end portion (31f) at which the chain guide (30) is situated closest to the drive chain (24). Ff06 4' Ldo N + - J / .~- 2 7- t / cty< & C'A / CC') -A-- ~ A 6 ,7/ .1 i/jo, ,~' (6< (9 > W /1 / kS) / -wfl -. 0(5 I A r'xN 4 1 U ts r</p> |
