OIL PUMP ROTOR

Provided is an oil pump rotor capable of improving a volume efficiency and a quietness. When a diameter of a base circle (bi) of an inner rotor (10) is ? (bi); a diameter of a first outer rolling circle (Di) is ? Di; a diameter of a first inner rolling circle (di) is ? di; a diameter of a base circl...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Eiichiro Niizuma, Atsushi Shiotani
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS WEAPONS
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Beschreibung
Zusammenfassung:	Provided is an oil pump rotor capable of improving a volume efficiency and a quietness. When a diameter of a base circle (bi) of an inner rotor (10) is ? (bi); a diameter of a first outer rolling circle (Di) is ? Di; a diameter of a first inner rolling circle (di) is ? di; a diameter of a base circle (bo) of an outer rotor (20) is ? bo; a diameter of a second outer rolling circle (Do) is ? Do; a diameter of a second inner rolling circle (do) is ? do; and an eccentricity amount between the inner rotor (10) and the outer rotor (20) is e, ? bi= n?( ? Di+ ? di) and ? bo = (n + 1)?( ? Do+ ? do) hold; either ? Di+ ? di= 2e or ? Do+ ? do= 2e holds; and ? Do > ? Di and ? di> ? do hold. When a clearance between the inner rotor (10) and the outer rotor (20) is t, 0.3 ? ((? Do + ? do)-( ? Di+ ? di))?(n + 1)/t ? 0.6 holds, provided that ? Di + ? di= 2e; or 0.3? ((? Do+ ? do)- (? Di+ ? di))?n/t? 0.6 holds, provided that ? Do + ? do= 2e.