Cylinder block and swash plate type liquid-pressure rotating apparatus including same
AssigneeKawasaki Jukogyo Kabushiki Kaisha
InventorsKoichi KOMADA, Yuichiro KURODA, Akihito MITSUHATA, Takaaki SATO
Life of this patent
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Abstract
A cylinder block includes: a plurality of cylinder bores including respective openings formed on a piston insertion end surface of the cylinder block, pistons being inserted in the respective cylinder bores and being configured to reciprocate and slide in the respective cylinder bores when the cylinder block rotates; and a cooling portion, wherein the cooling portion includes a plurality of cooling holes each formed between the adjacent cylinder bores and extending from the piston insertion end surface in an axial direction of the cylinder block.
Claims16
A cylinder block comprising:
- a plurality of cylinder bores including respective openings formed on a piston insertion end surface of the cylinder block, pistons being inserted in the respective cylinder bores and being configured to reciprocate and slide in the respective cylinder bores when the cylinder block rotates;
- and
- a cooling portion, wherein
- the cooling portion includes a plurality of cooling holes each formed between the adjacent cylinder bores and extending from the piston insertion end surface in an axial direction of the cylinder block.
A cylinder block comprising:
- a plurality of cylinder bores including respective openings formed on a piston insertion end surface of the cylinder block, pistons being inserted in the respective cylinder bores and being configured to reciprocate and slide in the respective cylinder bores when the cylinder block rotates;
- and
- a cooling portion, wherein
- the cooling portion includes a plurality of cooling holes each extending in a radial direction from an outer peripheral surface of the cylinder block through a portion between the adjacent cylinder bores.
A cylinder block comprising:
- a plurality of cylinder bores including respective openings formed on a piston insertion end surface of the cylinder block, pistons being inserted in the respective cylinder bores and being configured to reciprocate and slide in the respective cylinder bores when the cylinder block rotates;
- and
- a cooling portion, wherein
- the cooling portion includes a plurality of cooling holes each extending in a radial direction from an outer peripheral surface of the cylinder block.
A cylinder block comprising:
- a plurality of cylinder bores including respective openings formed on a piston insertion end surface of the cylinder block, pistons being inserted in the respective cylinder bores and being configured to reciprocate and slide in the respective cylinder bores when the cylinder block rotates;
- and
- a cooling portion, wherein
- the cooling portion includes:
- an annular cutout portion formed at an edge portion of the piston insertion end surface of the cylinder block;
- and a plurality of cooling grooves formed on an outer peripheral surface of the cylinder block so as to extend from the annular cutout portion in an axial direction of the cylinder block.
A cylinder block comprising:
- a plurality of cylinder bores including respective openings formed on a piston insertion end surface of the cylinder block, pistons being inserted in the respective cylinder bores and being configured to reciprocate and slide in the respective cylinder bores when the cylinder block rotates;
- and
- a cooling portion, wherein
- the cooling portion includes a plurality of cooling grooves each located between the adjacent cylinder bores and formed on an outer peripheral surface of the cylinder block so as to extend from the piston insertion end surface in an axial direction of the cylinder block.
Dependencies are inferred from the claim text.