STEERING MECHANISM OF DRIVING TRANSMISSION

Title:

STEERING MECHANISM OF DRIVING TRANSMISSION

Document Type and Number:

WIPO Patent Application WO/1998/012098

Kind Code:

A1

Abstract:

In an operation mechanism of an HST system transmission apparatus of the type in which an HST system non-stage transmission mechanism for driving and an HST system non-stage transmission mechanism for turning are disposed, the HST system non-stage transmission mechanism is operated by a transmission lever and the HST system non-stage transmission mechanism for turning is operated by a round operation wheel, a steering mechanism can make a turning operation matching turn feeling desired by an operator in turning at both low and high speeds. Namely, in the operation of the HST system transmission apparatus wherein the HST system non-stage transmission mechanism (25) for driving is operated by a transmission lever (68) and the HST system non-stage transmission mechanism (28) for turning is operated by a round operation wheel (19), a speed ratio between right and left driving devices is changed in accordance with the operation turning angle of the round operation wheel (19). The turning radius is changed, even with the same operation turning angle of the round operation wheel (19), by the difference of the operation angle of the transmission lever (68).

Inventors:

HIDAKA SHIGEMI (JP)

Application Number:

PCT/JP1997/001995

Publication Date:

March 26, 1998

Filing Date:

June 09, 1997

Export Citation:

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Assignee:

YANMAR AGRICULT EQUIP (JP)
HIDAKA SHIGEMI (JP)

International Classes:

B62D11/02; B60K17/356; B62D11/08; B62D11/18; (IPC1-7): B62D11/08

Foreign References:

JPH07329818A	1995-12-19
JPH08310434A	1996-11-26
JPH0776285A	1995-03-20
JPH08142906A	1996-06-04
JPS5318135A	1978-02-20
JPH08156821A	1996-06-18
JPH05301580A	1993-11-16
JPS6089454U	1985-06-19

Other References: