Motor
AssigneeAisan Kogyo Kabushiki Kaisha
InventorsNobuhiro Kato, Takashige Inagaki, Hidemasa Torii, Keiji Nakaya, Takuhito Fujiwara
Life of this patent
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Abstract
A motor includes a stator and a rotor having a rotor shaft. The motor includes a bearing having an inner ring and an outer ring that are configured to rotate relative to each other. The inner ring is supported by the rotor shaft. The motor also includes a holder that supports the outer ring. The holder is clearance-fitted to a retainer on a stator side. A rotation prevention apparatus configured to prevent the rotation of the holder is positioned between the holder and a stopper member on the stator side.
Claims8
A motor, comprising:
- a stator;
- a rotor including a rotor shaft;
- a bearing including an inner ring and an outer ring, wherein the inner ring and the outer ring are configured to rotate relative to each other, and wherein the inner ring is configured to support the rotor shaft;
- a holder supporting the outer ring, wherein the holder is disposed within a fixed member fixed on the stator such that the holder is spaced apart from the fixed member in a radial direction of the holder;
- and
- a rotation prevention apparatus configured to prevent rotation of the holder relative to the fixed member, wherein the rotation prevention apparatus is disposed between the fixed member and the holder, and wherein the rotation prevention apparatus is positioned outside the bearing in an axial direction of the bearing;
- wherein:
- the rotation prevention apparatus comprises an engaging part formed on the fixed member and an engaged part formed on the holder;
- and
- the engaging part and the engaged part are configured to engage each other in a circumferential direction of the holder.
A motor, comprising:
- a stator;
- a rotor including a rotor shaft;
- a bearing including an inner ring and an outer ring, wherein the inner ring and the outer ring are configured to rotate relative to each other, and wherein the inner ring is configured to support the rotor shaft;
- a holder supporting the outer ring, wherein the holder is disposed within a fixed member fixed on the stator such that the holder is spaced apart from the fixed member in a radial direction of the holder;
- and
- a rotation prevention means for preventing rotation of the holder relative to the fixed member, wherein the rotation prevention means is disposed between the fixed member and the holder,
- wherein the rotation prevention means is composed of an elastic member, which has elasticity and is interposed between the fixed member and the holder, and
- wherein the elastic member elastically and radially abuts the fixed member and the holder so as to prevent rotation of the holder relative to the fixed member.
A motor, comprising:
- a stator;
- a rotor having a rotor shaft;
- a bearing including an inner ring and an outer ring, wherein the inner ring and the outer ring are configured to rotate relative to each other, wherein the inner ring is configured to support the rotor shaft, and wherein the outer ring is disposed within a fixed member fixably coupled to the stator such that the outer ring is spaced apart from the fixed member in a radial direction of the outer ring;
- and
- a rotation prevention means configured to prevent rotation of the outer ring and positioned between the fixed member and the outer ring, wherein the rotation prevention means comprises an elastic member having elasticity and interposed between the fixed member and the outer ring, and
- wherein the elastic member elastically and radially abuts the fixed member and the outer ring so as to prevent rotation of the outer ring.
Dependencies are inferred from the claim text.