Electromagnetic rotary actuator and housing for electronic devic

Electrical generator or motor structure – Dynamoelectric – Rotary

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Details

310 36, 310 77, 310 93, H02K 500, H02K 3300, H02K 710, H02K 4900

Patent

active

056843500

ABSTRACT:
A ring rotor wherein two magnets of different polarities are disposed in an annular fashion, is supported free to rotate on a base. Two stator coils fixed on the base face these magnets inside of this rotor. Also provided are a switch fixed for selectively energizing these coils, and a mechanism for holding the ring rotor in a predetermined rotation position. Due to the use of magnets for the rotor, brushes are unnecessary, and the ring rotor can be held in a stop position by the holding mechanism.
Througholes connecting the inside of the housing and the outside of the housing base are provided in a boss projecting from the base towards the inside of the housing. Grooves are formed from the opening position of the throughole in the base to the side walls of the housing. Bends are provided in these grooves. Leads running from outside into the housing are guided inside the housing via these grooves and througholes. Leads are fixed by filling the grooves and througholes with a filler. External forces acting on the leads are supported by these bends and the fixed force of the filler, thereby preventing loads from affecting wiring connections inside the housing.

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