| 摘要 |
The reservoir includes a tank (1) having an inlet (2), and a cap for covering the inlet. The cap further comprises an outer portion (3), an inner portion (4), a labyrinth (5), a protruding portion (8), a vent hole and a check valve (20). The inner portion (4) is arranged in the outer portion (3) to define the labyrinth (5) therebetween. The labyrinth (5) is opened to outside of the tank (1). The protruding portion (8) is formed on the center of the inner portion (4) to protrude in a direction of the inside of the tank (1), in which the vent hole (9) is formed to communicate between inside of the tank (1) and the labyrinth (5). The check valve (20) is arranged on an upper end of the vent hole (9), and is constructed to permit the communication of air through the vent hole (9) and to prevent a leak of the fluid through the vent hole (9). <IMAGE>
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