Solenoid with magnetic control of armature velocity

Details Solenoid with magnetic control of armature velocity Solenoid with magnetic control of armature velocity

H - Electricity

01

F

H01F 7/08 (2006.01) H01F 7/13 (2006.01) H01F 7/16 (2006.01)

Patent

CA 2178828

A low-noise solenoid has an armature (15) with a projecting ridge (23) receivable within a groove (25) in a pole piece (17). As the ridge (23) enters the groove (25), the magnetic force which opposes a return spring (21) decreases until there is equilibrium whereat the armature (15) remains suspended without impacting upon the pole piece (17).

Une électrovanne à faible bruit comprend une armature (15) pourvue d'une nervure en saillie (23) qui se loge dans une rainure (25) ménagée dans une pièce polaire (17). Tandis que la nervure (23) entre dans la rainure (25), la force magnétique contrant un ressort de rappel (21) décroît jusqu'à un état d'équilibre, l'armature (15) demeurant alors suspendue sans heurter la pièce polaire (17).

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