CRANK DEVICE AND MACHINE DEVICE - LONGWELL JAPAN CO LTD

Title:

CRANK DEVICE AND MACHINE DEVICE

Document Type and Number:

WIPO Patent Application WO/1995/030847

Kind Code:

A1

Abstract:

An object of the invention is to provide a construction for a crank device for performing power conversion between a reciprocating linear motion and a rotary motion, which construction provides a good dynamic balance and power transmission efficiency and is suitable for high-speed operation. An outer diameter of a planetary gear (21) of a planetary mechanism (4) is set to half of an inner diameter of a stationary internal gear (20), and a crank pin (12) of a crank shaft (2) is rotatably supported by and connected to the center of rotation of the planetary gear (21). A connecting rod (3) is rotatably supported by and connected to the outer peripheral portion of the planetary gear (21). Accordingly, the connecting rod (3) effects linear motion in a direction of reciprocation of a piston (15) without shaking, so that a stable dynamic balance is ensured. Further, a mass distribution for respective constituent members is set so as to provide a dynamic balance between a reciprocating section and a rotating section whereby a uniform and stable movement is ensured from a region of low-speed rotation to a region of high-speed rotation.

Inventors:

TAKACHI KEN (JP)
OGAI SHUJI (JP)

Application Number:

PCT/JP1995/000362

Publication Date:

November 16, 1995

Filing Date:

March 06, 1995

Export Citation:

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Assignee:

LONGWELL JAPAN CO LTD (JP)
TAKACHI KEN (JP)
OGAI SHUJI (JP)

International Classes:

F01B9/02; F02B41/04; F02B75/32; F16H1/28; F16H21/36; F16J1/12; F16J1/24; F02B1/04; F02B75/02; (IPC1-7): F16H21/18; F16C3/22

Foreign References:

JPS6246744B2	1987-10-05
JPS63284085A	1988-11-21

Other References: