JPH0183190U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of essential parts showing one embodiment of the present invention, Fig. 2 is a perspective view showing an electromagnetic block used in the same, and Fig. 3 is a process diagram showing the process of forming an iron core used in the same. 4 is a sectional view of the electromagnetically driven diaphragm pump according to the present invention, FIG. 5 is an explanatory diagram of the same operation, and FIG. 6 is a perspective view showing a conventional electromagnetic block. 10 is an electromagnetic block, 11 is an iron core, 12 is a coil, 14 is a first iron core, 14a is a main piece, 14b is a side leg piece, 14c is a middle leg piece, 15 is a second iron core, 20
21 is a permanent magnet, 30 is a diaphragm, 31 is a compression chamber, 40 is a housing, and G is a gap.

Claims (1)

[Scope of utility model registration request] An electromagnetic block with a coil wound around an iron core and a permanent magnet are inserted into a gap formed at a suitable position in a magnetic path passing through the iron core, and are placed on a straight line in a plane approximately perpendicular to the magnetic flux passing through the gap. A movable element is arranged to be able to move back and forth, a diaphragm is fixed to the tip of the movable element in the reciprocating direction and vibrates in the thickness direction as the movable element moves back and forth, and the electromagnetic block and diaphragm are held in fixed positions. An intake valve and an exhaust valve are provided at appropriate positions in a compression chamber surrounded by a part of the peripheral wall of the housing and a diaphragm, and an alternating magnetic field is generated by passing an alternating current through the coil. In an electromagnetically driven diaphragm pump in which the mover moves back and forth due to magnetic interaction between the main piece and a permanent magnet, the iron core has a pair of side leg pieces protruding from both ends of the main piece and perpendicular to the main piece. An E-shaped first iron core with a middle leg piece protruding in the same direction as the side leg pieces at the middle part of the piece, and an I-shaped first iron core that magnetically bridges the legs on both sides of the first iron core. The middle leg piece of the first iron core is set to have a smaller protrusion amount from the main piece than the leg pieces on both sides, and the end surface of the middle leg piece and the middle part of the second iron core are An electromagnetically driven diaphragm pump characterized in that the gap described above is formed in between.