| 摘要 |
A solenoid microvalve for fluids, of the type comprising a valve unit and a solenoid control device which can be mutually engaged and disengaged by means of a snap coupling. The valve unit comprises a sleeve for housing a movable magnetic member and a steady magnetic core member, which extend axially in a coil defining the magnetic circuit of the solenoid control device, and in which the movable magnetic core is biased, by a spring, towards a position in which it closes a flow passageway in the microvalve. The sleeve comprises a rear portion of magnetically conductive material, for circulation of the magnetic flux, which extends from one side of the valve unit, and a front portion of magnetically non-conductive material, from which the steady core member partially protrudes. The rear sleeve portion is provided with an annular slot which engages by snapping a hooking spring provided on a front side of the solenoid control device.
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