GEAR PUMP APPARATUS

PROBLEM TO BE SOLVED: To provide a drive gear improved in strength and rigidity to withstand high torque. SOLUTION: The drive gear 1 forming this internal gear type gear pump apparatus has a cylindrical boss part 15 formed at the center part on one end face side of the drive gear 1 so as to project...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ITO ATSUSHI, FUJIWARA EIJU, YAO HIROYUKI
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:	PROBLEM TO BE SOLVED: To provide a drive gear improved in strength and rigidity to withstand high torque. SOLUTION: The drive gear 1 forming this internal gear type gear pump apparatus has a cylindrical boss part 15 formed at the center part on one end face side of the drive gear 1 so as to project in the axis direction of the drive gear 1, and the outer peripheral part of the boss part 15 is provided with a spline part 155 with which a drive shaft 7 is engaged. An annular bearing 8 is pressed into an inner diameter part 18 of the drive gear 1, at the root part where the cylindrical boss part 15 is provided. Before the bearing 8 is pressed in, the side face part of the external tooth 12 of the drive gear 1, on the side provided with the boss part 15, is provided with a tapered flank 11 formed to incline toward the edge tip of the external tooth 12. COPYRIGHT: (C)2004,JPO