| 摘要 |
When a vacuum-suction tool stand ( 1 ) is to be stuck to a table ( 2 ), a valve ( 16 ) is rotated to a position so that a knob ( 163 ) comes to the right side thereof viewed from the front to establish communication between an air suction hole ( 132 ) and a cavity ( 131 ). Then, by sucking the air within the cavity ( 131 ) through the air suction hole ( 132 ) using a suction pump (not shown) to make the inside of the cavity ( 131 ) close to a vacuum state, thereby the vacuum-suction tool stand ( 1 ) is stuck to the table ( 2 ). To release suction, the knob ( 163 ) of the valve ( 16 ) is rotated clockwise by 90 degrees. Then, the communication between an air release hole ( 15 ) and the cavity ( 131 ) is established and the air is supplied to the cavity ( 131 ) in a substantially vacuum state, and thus the vacuum-suction state is released.
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