| 摘要 |
PURPOSE:To improve and maintain the performance by forming a through-hole in one of a rotary shaft and a connecting plate, and communicating portions in a closed oil chamber on opposite sides of the connecting plate to thereby communicate air and oil. CONSTITUTION:A connecting plate 12 is formed on an outer circumference of a transmitting shaft 10, and includes a plurality of axially extending through- holes 31. Accordingly, portions 25a and 25b in a closed oil chamber 25 between a first inner sleeve portion 16a and the connecting plate 12 and between a second inner sleeve portion 16b and the connecting plate 12, respectively, are communicated with each other. In this construction, when oil is injected into the closed oil chamber 25, the air is discharged from the lower portion 25b through the through-holes 31 to the upper portion 25a, and is then discharged from an oil inlet hole 21 to the outside. Therefore, the oil is fully filled in the closed oil chamber 25, and there is no possibility that a volume percentage of the oil at portions of clutch discs 4 and 7 changes in using a viscous coupling device 1. |
