Transmission and its manufacturing method



【課題】組付け性が向上し、内部の潤滑を効率良く行うことができる変速機およびその製造方法を提供する。 【解決手段】前進段を構成する変速ギヤ群51,52,53,54,55,71,72,73,74,75を含む変速機構と、後進段を構成するリバースアイドラギヤ15とリバースアイドラシャフト14とを含むリバース機構とを備える変速機1において、変速機構の変速軸3,4,6の一端を軸支する第1ケース1aと、変速軸3,4,6の他端を軸支するとともに変速機構およびリバース機構を収容する第2ケース1bと、リバースアイドラシャフト14の一端が第2ケース1bに形成されたシャフト孔1cに対応するようリバース機構14,15を位置決めする第1ケース1aに固定配置された位置決め手段16とを備えて構成する。 【選択図】図1
PROBLEM TO BE SOLVED: To provide a transmission with improved assemblability which is capable of efficiently performing lubrication inside the transmission, and its manufacturing method. SOLUTION: The transmission 1 is equipped with a transmission mechanism including transmission gear groups 51, 52, 53, 54, 55, 71, 72, 73, 74, and 75 composing an advancing step, and a reverse mechanism including a reverse idler gear 15 and a reverse idler shaft 14 composing a backing step. The transmission 1 is equipped with a first case 1a journaling one ends of transmission shafts 3, 4, and 6 of the transmission mechanism, a second case 1b for journaling the other ends of the transmission shafts 3, 4, and 6 and accommodating the transmission mechanism and the reverse mechanism, and a positioning means 16 fixedly arranged on the first case 1a for positioning the reverse mechanisms 14 and 15 so that one end of the reverse idler shaft 14 corresponds to a shaft hole 1c formed on the second case 1b. COPYRIGHT: (C)2007,JPO&INPIT




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