| 摘要 |
A boot for a universal joint is constructed by a boot body and a boot adapter. The one end of the boot is fitted on a propeller inner shaft via its one-end fitting portion and the other end of the boot is fitted on the outer race of the universal joint via its other-end fitting portion, thereby substantially covering the universal joint. The foregoing one-end fitting portion has an annular lip portion at its end portion. Passages for flowing air are formed on the one-end fitting portion and its annular lip portion, respectively. The passages communicate with each other through an annular partial passage between both passages. The existence of the annular partial passage increases the flowing resistance of air between the inside and the outside of the boot to reduce the pressure fluctuation in the boot and to improve the effectiveness in preventing splashed water or muddy water from intruding into the boot along with the suction of air.
|
