| 摘要 |
PURPOSE: A pressure switch for an automatic pump is provided to have a reduced cost and volume by reducing the quantity of components. CONSTITUTION: A pressure switch for an automatic pump comprises an impeller and a pressure switch(100). The impeller is rotated by the rotary shaft of a motor and transfers liquid. The pressure switch senses the pressure of the transferred liquid and drives or stops the motor depending on a set value. The pressure switch comprises a holder(110), a deformable member, and a fixing member(120). One side of the holder is connected to a liquid path. The deformable member is installed in one side of the holder and is elastically deformed by the pressure change of the liquid. The fixing member is installed in the other side of the holder. One side of the fixing member is in contact with the deformable member, and the other side is connected to the motor.
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