| 摘要 |
PURPOSE:To enable a proper amount of lubricant oil to be applied within a transmission mechanism so as to prevent increase in oil temperature and decrease in transmission efficiency by arranging each of double lip seals not only in the transmission mechanism chamber between partitioned No.1 and No.2 output shafts but also in a space between a transmission gear and a rear chamber. CONSTITUTION:A transfer gear case for a four wheel drive car is composed of an extension case, a front transmission mechanism case 7 which is connected with the rear side of the extension case, a rear transmission mechanism case 8, and an extension housing 9, al of which are connected in series. In this case, a double lip oil seal S1 is arranged between a cylindrical support 73 and an intermediate transmitting shaft 23 so as to allow a switch-over mechanism chamber 45A and a front transmission mechanism chamber 80 to be partitioned and sealed. And a double lip oil seal S3 is also arranged between a cylindrical support 82 and a rear end section 23B of an intermediate transmitting shaft 23 so as to allow the rear transmission mechanism case 8 and the extension housing 9 to be partitioned and sealed. And each of the seal S1 and S3 is lubricated through an oil passage located within the intermediate transmitting shaft 23.
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