LUBRICATION STRUCTURE OF ROTARY TYPE CYLINDER DEVICE

Title:

LUBRICATION STRUCTURE OF ROTARY TYPE CYLINDER DEVICE

Document Type and Number:

Japanese Patent JP2003042057

Kind Code:

A

Abstract:

To restrict the quantity of a lubricant flowing into a cylinder chamber to a necessary quantity.

The lubrication structure of the rotary type cylinder device comprises a rotating cylinder member 2 in which cylinder chambers 22 and 23 are formed, pistons 3 and 4, a piston holding member 5 for holding the pistons 3 and 4 and rotating, a casing 6, and a bearing plate for rotatably supporting the piston holding member 5. The pistons 3 and 4 are held at positions X1 and X2 respectively with certain distances from the center of rotation X of the piston holding member 5. The lubrication structure also has a first lubricant feed hole 64 formed in the piston holding member 5 for feeding the lubricant to the cylinder chambers 22 and 23 when it faces the cylinder chambers 22 and 23, a second lubricant feed hole 65 for feeding the lubricant to the first lubricant feed hole 64, and a restricting part 66 for temporarily plugging the first lubricant feed hole 64 when the first lubricant feed hole 64 is opposite to the cylinder chambers 22 and 23.

Inventors:

KOMATSU FUMITO
MURAMATSU KENJI
HAYASHI KATSUHIKO

Application Number:

JP2001230508A

Publication Date:

February 13, 2003

Filing Date:

July 30, 2001

Export Citation:

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Assignee:

SANKYO SEIKI SEISAKUSHO KK

International Classes:

F04B1/02; F04B27/06; (IPC1-7): F04B27/06; F04B1/02

Attorney, Agent or Firm:

Murase Kazumi

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