US 6,608,416 B2Granted

Motor and method of manufacturing the same

AssigneeKabushiki Kaisha Sankyo Seiki Seisakusho

InventorKiyoshi Nishimura

Life of this patent

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Abstract

A motor includes a cylindrical rotor having a magnet, a stator having a cylindrical inner peripheral surface opposing to an outer periphery of the rotor, an output shaft projecting from one axial end side of the stator, and a frame fixed to the one axial end side of the stator to pivotally support the output shaft at a distal end thereof. Holes having diameters identical to the inner diameter of the stator are formed in the frame for pivotally supporting the distal end of the output shaft and for fixing the stator. A positioning jig of a diameter slightly smaller than those of the holes are simultaneously inserted into a hole defining the inner peripheral surface of the stator and into the two holes in the frame, and the positioning jig are caused to abut against the inner peripheral surfaces of the holes to effect positioning.

Claims5

Dependent claims

A method of manufacturing a motor including a cylindrical rotor having a magnet, a stator having a cylindrical inner peripheral surface opposing to an outer periphery of said rotor, an output shaft of said rotor projecting from a first axial end side of said stator, and a frame fixed to the first axial end side of said stator to pivotally support said output shaft at a distal end thereof, the method comprising the steps of:

forming holes in said frame at a portion where the distal end of said output shaft is pivotally supported and at a portion where said stator is fixed, wherein said holes have diameters identical to a diameter of the inner peripheral surface of said stator;
simultaneously inserting a round rod-shaped positioning jig having a diameter slightly smaller than the diameter of said holes into a hole defining the inner peripheral surface of said stator and into said two holes in said frame, and causing said positioning jig to abut against the inner peripheral surfaces of said holes so as to effect positioning;
and
fixing a first side of said frame to the first axial end side of said stator.

1 more element

A motor comprising:

a cylindrical rotor having a magnet;
a stator having a cylindrical inner peripheral surface opposing to an outer periphery of said rotor;
an output shaft of said rotor projecting from a first axial end side of said stator;
and
a frame fixed to the first axial end side of said stator to pivotally support said output shaft at a distal end thereof, said frame being provided with holes at a portion where the distal end of said output shaft is pivotally supported and at a portion where said stator is fixed;
wherein said holes have a diameter identical to a diameter of the inner peripheral surface of said stator, and
a central axis of the inner peripheral surface of said stator and central axes of said two holes in said frame are concentrically aligned.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/166,630Filed 12 Jun 2002
Priority: JP P2001-17840413 Jun 2001
Published: US 2002/0190591 A119 Dec 2002
Granted: 19 Aug 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G11B 7/08582
Arrangements for mechanically moving the whole head: sled-type positioners
H02K 15/16
Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines: centring rotors…
Y10T 29/49009
Electrical device making: dynamoelectric machine
Y10T 29/49012
Dynamoelectric machine: rotor