| 摘要 |
PROBLEM TO BE SOLVED: To provide a breather structure of a transfer capable of regulating a pressure in a device chamber while suppressing the outflow of oil content from the device chamber by an inexpensive structure in which the existing portion of a transfer case is diverted without using a breather valve.SOLUTION: A breather structure includes a narrow passage 32 formed of a gap between the outer surface of a bolt member 13 inserted into a bolt insertion hole 18a and the inner surface of the bolt insertion hole 18a, as a breather passage 30 allowing a device chamber 20 to communicate with the outside of a transfer case 5. The device chamber 20 communicates with the outside of the transfer case 5 through the narrow passage 32. By the structure, the narrow passage 32 is formed of a rather small space, so that the air contained in the internal air discharged from the device chamber and the outside air (gas content) are allowed to flow therethrough. However, the oil content (liquid content) contained in the internal air is difficult to flow therethrough. Consequently, the narrow passage 32 functions as a breather valve, and can regulate a pressure in the device chamber 20 while suppressing the outflow of the oil content from the device chamber 20 by an inexpensive structure. |
