V-BELT TYPE CONTINUOUSLY VARIABLE TRANSMISSION FOR SMALL-SIZED VEHICLE AND SADDLE-RIDING TYPE VEHICLE

Title:

V-BELT TYPE CONTINUOUSLY VARIABLE TRANSMISSION FOR SMALL-SIZED VEHICLE AND SADDLE-RIDING TYPE VEHICLE

Document Type and Number:

WIPO Patent Application WO/2006/003904

Kind Code:

A1

Abstract:

A V-belt type continuously variable transmission for a small-sized vehicle capable of achieving both the protection of an electric motor and an increase in maintainability by avoiding the electric motor forming a groove width adjusting mechanism from a heating source and positively cooling the electric motor, and a saddle-riding type vehicle. The continuously variable transmission comprises a primary sheave (113) and a secondary sheave (123) forming V-grooves for wrapping a belt therearound with adjustable groove widths. An opening part (110) is formed in a case (105) storing the primary sheave (113) and the secondary sheave (123) so that the air in the case (105) can be s exhausted to the outside and the air outside the case can be sucked therein. The electric motor (140) for driving the groove width adjusting mechanism (141) for the V-groove of the primary sheave (113) is disposed in an air flow passage on the outside of the case (105).

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Inventors:

UNNO TOSHIO (JP)

Application Number:

PCT/JP2005/011859

Publication Date:

January 12, 2006

Filing Date:

June 28, 2005

Export Citation:

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Assignee:

YAMAHA MOTOR CO LTD (JP)
UNNO TOSHIO (JP)

International Classes:

F16H57/035; F16H57/02; (IPC1-7): F16H9/18; F16H57/02

Domestic Patent References:

WO2003048612A2

2003-06-12

Foreign References:

JP2003314671A	2003-11-06
JPH0743015B2	1995-05-15
JP3099023B2	2000-10-16
JP2002364710A	2002-12-18
JP2612738B2	1997-05-21

Other References: