| 摘要 |
PURPOSE: An electronic diaphragm pump is provided to maintain the discharging amount and prevent water leakage even by use for a long time by firmly maintaining the circumferential edge of the diaphragm. CONSTITUTION: An electromagnet diaphragm pump(1) comprises an electromagnet(20); a vibrator(3) vibrating according to the polarity of the electromagnet; a diaphragm(40) arranged on the end of the vibrator; a first gripping member(50); and a second gripping member(60). The diaphragm has a ring-shaped bead part(45) protruded from the outer circumference of the diaphragm in a vertical direction to a first membrane surface. The first gripping part has a recessed part to receive the bead part. The second gripping part has a pressed surface to press a second membrane surface of the diaphragm without the bead part. The pressing surface of the second gripping part comprises a first convex pressing part and a second concave pressing part.
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