Stepping motor for meter
AssigneeMinebea Motor Manufacturing Corporation
InventorsShoji YOSHITOMI, Katsutoshi SUZUKI, Masatomo KOMAKI
Life of this patent
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Abstract
A stepping motor for a meter to rotate a pointer of a meter, the stepping motor for a meter includes: a rotor part having: a cylindrical magnet; and a rotational shaft, which is hollow and made of a resin, and which is molded on an inner periphery of the cylindrical magnet and is coaxial with the cylindrical magnet; a stator part that contains the rotor part therein and has an excitation coil; a front plate made of a resin, and an end plate made of a resin, wherein a fixing part to fix the cylindrical magnet is molded when molding the rotational shaft, and wherein the cylindrical magnet is fixed by the fixing part so that the cylindrical magnet and the rotational shaft are integrated.
Claims6
A stepping motor for a meter to rotate a pointer of a meter, the stepping motor for a meter comprising:
- a rotor part having:
- a cylindrical magnet;
- and
- a rotational shaft, which is hollow and made of a resin, and which is molded on an inner periphery of the cylindrical magnet and is coaxial with the cylindrical magnet;
- a stator part that contains the rotor part therein and has an excitation coil;
- a front plate made of a resin, and
- an end plate made of a resin,
- wherein a fixing part to fix the cylindrical magnet is molded when molding the rotational shaft, and
- wherein the cylindrical magnet is fixed by the fixing part so that the cylindrical magnet and the rotational shaft are integrated.
Dependencies are inferred from the claim text.