Solenoid with variable magnetic path

F - Mech Eng,Light,Heat,Weapons – 15 – B

Patent

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Details

F15B 13/044 (2006.01) F02M 51/04 (2006.01) F02M 57/02 (2006.01) F16K 31/06 (2006.01) H01F 3/00 (2006.01)

Patent

CA 2308712

An electromagnetic solenoid includes a housing enclosing an electromagnetic coil assembly (16). An armature (20) is disposed within the electromagnetic coil assembly (16). An end (14) of the housing is provided with an annular groove (64). A nut (68) is selectively received by the groove for varying the magnetic path of the coil assembly (16). Adjustment of the nut (68) thereby sets the solenoid at a predetermined armature activation force accounting for manufacturing tolerance of the solenoid components as well as variations in the electric current supplied to the coil assembly (16).

L'invention concerne un solénoïde électromagnétique qui comporte un logement contenant un ensemble (16) bobine électromagnétique. Un induit (20) est placé à l'intérieur de l'ensemble (16) bobine électromagnétique. Une extrémité (14) du logement comporte une gorge (64) annulaire. Un écrou (68) est reçu de manière sélective dans la gorge pour faire varier le trajet magnétique de l'ensemble (16) bobine. Le réglage de l'écrou (68) permet ainsi de fixer le solénoïde à une force d'activation d'induit prédéterminée tenant compte de la tolérance de fabrication des éléments du solénoïde ainsi que des variations du courant électrique fourni à l'ensemble (16) bobine.

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