| 摘要 |
PROBLEM TO BE SOLVED: To prevent lowering of a traction controlling function by speedily carrying out introduction of atmospheric air to a liquid reservoir chamber even when a liquid level of working liquid in a reservoir tank is quickly lowered at the time when the traction controlling function works. SOLUTION: A diaphragm 7 to partition the liquid reservoir chamber 8 inside of the reservoir tank 1, a cap 5 and an atmospheric air chamber 9 on the side of a cap base 6, a peripheral edge part 7a sandwiched by the reservoir tank 1 and the cap 5 and a bellows part 7b formed continuously to the peripheral edge part 7a. A communicating hole 10 to communicate to the atmospheric air chamber 9 is formed on a bulkhead to the peripheral edge part 7a of the bellows part 7b. COPYRIGHT: (C)2004,JPO&NCIPI
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