STEPLESS SPEED CHANGE UNIT - DAIHATSU MOTOR CO LTD

Title:

STEPLESS SPEED CHANGE UNIT

Document Type and Number:

WIPO Patent Application WO/2001/088411

Kind Code:

A1

Abstract:

A stepless speed change unit comprising a driving pulley (11), a driven pulley (21), a belt (15) entrained between the driving and driven pulleys, a speed change ratio changing mechanism for changing the belt-entraining diameters of both pulleys mutually in opposite directions, and a tensioner device (50) pressing the belt to obtain a belt tension. The tensioner device (50) is provided with a tension roller (51) pressing the slack side of the belt (15) from outside, a swing arm (53) swingably supported by a speed change unit case (6), a link (52) connecting the tension roller (51) to the arm (53), an urging means (54, 55) for urging the arm (53) to swing in a direction for the tension roller (51) to press the belt (15). A support mechanism for the tension roller (51) is of link construction having two or more degrees of freedom, whereby in all speed change ratios, the tension roller (51) can be automatically moved to a position where it does not interfere with the pulleys (11, 21).

Inventors:

TEMMA YASUYUKI (JP)
OSHIBUCHI TAKAFUMI (JP)
MURAKAMI HISAYASU (JP)

Application Number:

PCT/JP2001/001175

Publication Date:

November 22, 2001

Filing Date:

February 19, 2001

Export Citation:

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Assignee:

DAIHATSU MOTOR CO LTD (JP)
TEMMA YASUYUKI (JP)
OSHIBUCHI TAKAFUMI (JP)
MURAKAMI HISAYASU (JP)

International Classes:

F16H9/18; F16H9/20; F16H37/02; F16H61/662; F16H7/08; F16H7/12; (IPC1-7): F16H7/12; F16H9/18

Foreign References:

JPH05106700A	1993-04-27
JPH05280613A	1993-10-26
JPH02121664U	1990-10-03
JPH02107859U	1990-08-28
JPS6069859U	1985-05-17
JPH03199719A	1991-08-30

Other References: