CORELESS MOTOR, MOLD FOR DYNAMIC PRESSURE BEARING, AND METHOD FOR MANUFACTURING DYNAMIC PRESSURE BEARING

PROBLEM TO BE SOLVED: To provide a coreless motor having a resin mold body having an accurate groove for generating a high dynamic pressure. SOLUTION: The coreless motor 1 comprises a motor housing 11, a rotary shaft 5 that is inserted into and is arranged at the center, a resin mold body 10 where a...

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Bibliographische Detailangaben
1. Verfasser:	TAMORI ISAMU
Format:	Patent
Sprache:	eng
Schlagworte:	BEARINGS BLASTING CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DYNAMO-ELECTRIC MACHINES ELECTRICITY ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS FOR PERFORMING MECHANICAL WORK IN GENERAL GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL GENERATION HEATING LIGHTING MECHANICAL ENGINEERING METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICALVIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY PERFORMING OPERATIONS ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a coreless motor having a resin mold body having an accurate groove for generating a high dynamic pressure. SOLUTION: The coreless motor 1 comprises a motor housing 11, a rotary shaft 5 that is inserted into and is arranged at the center, a resin mold body 10 where a bearing section for rotatably supporting the rotary shaft 5 in the motor housing 11 and a cylindrical housing section that is fitted and arranged on the axial line of the rotary shaft 5 are integrated, a magnet 6 that is fitted and fixed to the outer periphery of the bearing housing, a cylindrical coil 7 for accommodating the magnet 6 within the diameter while being separated by a magnetic gap, a coil holder 8 for holding the coil 7 on the axial line of the rotary shaft 5, and a rectification mechanism 9 connected to the coil 7. In the coreless motor 1, the resin mold body 10 has an oil well that is formed on the inner periphery surface of the bearing housing, and a groove for generating dynamic pressures that is formed within a range whose depth is equal to or more than 0.1 μm and equal to or less than 5 μm.