SINTERED BEARING, FLUID DYNAMIC BEARING DEVICE AND MOTOR COMPRISING SAME, AND SINTERED BEARING MANUFACTURING METHOD

• Main Authors: KURIMURA TETSUYA, HARADA KAZUYOSHI
• Format: Patent
• Language: English; French; Japanese
• Published: 17.09.2015
• Subjects: BEARINGS; BLASTING; CASTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERATION; HEATING; LIGHTING; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; POWDER METALLURGY; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WORKING METALLIC POWDER

This sintered bearing (8) has a plurality of axial grooves (8c1) arranged on an outer circumferential face (8c) at regular intervals in the circumferential direction and also has a plurality of dynamic pressure grooves (8a11) and the like arranged on the inner circumferential face (8a) at regular intervals in the circumferential direction. In this sintered bearing (8), the number of axial grooves (8c1) is an integer multiple of the number of dynamic pressure grooves (8a11) and the like that are on the same circumference. L'invention concerne un palier fritté (8) qui comporte une pluralité de rainures axiales (8c1) aménagées sur une face circonférentielle externe (8c), selon des intervalles réguliers dans la direction circonférentielle, et comporte également une pluralité de rainures (8a11) de pression dynamique et analogue, aménagées sur la face circonférentielle intérieure (8a) selon des intervalles réguliers dans la direction circonférentielle. Dans ce palier fritté (8), le nombre de rainures axiales (8c1) est un multiple entier du nombre de rainures (8a11) de pression dynamique et analogue se situant sur la même circonférence. 　本発明に係る焼結軸受８は、外周面８ｃに、円周方向等間隔に配された複数の軸方向溝８ｃ１を有すると共に、内周面８ａに、円周方向等間隔に配された複数の動圧溝８ａ１１等を有する。この焼結軸受８では、複数の軸方向溝８ｃ１の本数を、同一円周上における複数の動圧溝８ａ１１等の本数の整数倍とした。