BALANCE SHAFT

PROBLEM TO BE SOLVED: To provide a balance shaft capable of compatibly establishing a reduction of its weight and maintaining the lubricating performance. SOLUTION: The balance shaft 1 is equipped with a journal 6b supported rotatably by a bearing 2b. On the counter unbalance mass side 8 of the jour...

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Bibliographic Details
Main Author MINAMINO KEIJI
Format Patent
LanguageEnglish
Published 20.01.2005
Edition7
Subjects
BEARINGS
BLASTING
ELEMENTS OR CRANKSHAFT MECHANISMS
ENGINEERING ELEMENTS AND UNITS
FLEXIBLE SHAFTS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MEANS FOR DAMPING VIBRATION
MECHANICAL ENGINEERING
ROTARY BODIES OTHER THAN GEARING ELEMENTS
SHAFTS
SHOCK-ABSORBERS
SPRINGS
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To provide a balance shaft capable of compatibly establishing a reduction of its weight and maintaining the lubricating performance. SOLUTION: The balance shaft 1 is equipped with a journal 6b supported rotatably by a bearing 2b. On the counter unbalance mass side 8 of the journal 6b, a neck part 9 is formed where the journal width as part thereof is set smaller than the journal width on the unbalance mass side 7. The journal 6b is provided internally with a lubrication passage 11 opening at its outer circumferential surface for supplying the lubricating oil to between the journal 6b and the bearing 2b. The opening 13 of the lubrication passage 11 is positioned in front in the shaft rotating direction of the position where the oil film pressure between the journal 6b and the bearing 2b maximizes. A groove 15 extending from the opening 13 toward the front about the shaft rotating direction to the neck part 9 is formed at the outer circumferential surface of the journal 6b. COPYRIGHT: (C)2005,JPO&NCIPI
Bibliography:Application Number: JP20030183397