SPEED REDUCER AND GEAR PUMP

PROBLEM TO BE SOLVED: To satisfy both quietness and endurance.SOLUTION: In a speed reducer 20, each of engagement surfaces 42A of a plurality of outer pins 42 is formed by elliptical arc with tangential direction of a motor shaft 16 as the direction of a long axis, and each of engaged surfaces 44A o...

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Bibliographische Detailangaben
1. Verfasser:	ITO YASUHIDE
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS 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 THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To satisfy both quietness and endurance.SOLUTION: In a speed reducer 20, each of engagement surfaces 42A of a plurality of outer pins 42 is formed by elliptical arc with tangential direction of a motor shaft 16 as the direction of a long axis, and each of engaged surfaces 44A of a plurality of outer teeth 44 is formed to be engaged with the engagement surface 42A in a surface contact state. Because, in this configuration, for example, compared with a case where the engagement surface 42A is formed like the arc, the engagement surface 42A and the engaged surface 44A are smoothly in contact, the quietness can be enhanced. Further, because the curved surfaces of the tooth bottom of a plurality of the outer teeth 44 become smooth by configuring the engagement surface 42A and the engaged surface 44A as above, this enables the endurance of inner gear 24 and therefore the speed reducer 20 to be secured.