ROTARY SWASH PLATE HYDRAULIC PUMP

Abstract: this rotary swash plate hydraulic pump includes: a casing; a cylinder block including a cylinder bore and disposed in the casing so as to prevent relative rotation of the cylinder block; a piston that is inserted into the cylinder bore; a rotary swash plate that is housed in the casing so as to be rotatable about an axis and reciprocates the piston; and a variable capacity mechanism that changes an effective stroke length of the piston. the variable capacity mechanism includes a spool that changes the effective stroke length of the piston by adjusting opening and closing of the cylinder bore that corresponds to the spool. the cylinder block includes a spool hole into which the spool is inserted.

Inventor(s): Shinji NISHIDA, Isamu YOSHIMURA, Satoru TAKAO

CPC Classification: F04B1/146 (having stationary cylinders)

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