Title:
RUNNING AND SHIFT STRUCTURE OF WORKING VEHICLE
Document Type and Number:
Japanese Patent JP3069274
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To hold a speed change operation unit at a desired operating position without preparing a worm reduction mechanism or an exclusive friction holding mechanism, in running and shift structure which is composed by interlocking and connecting a shift operation unit and a CVT device for running mechani cally, and giving the motive power of the speed change operation unit regularly and reversely along the operating direction of the speed change operation unit as an assist force.
SOLUTION: When a shift operation unit 26 is not operated artificially, a holding current to hold a CVT device 3 at the shift position against the return of the CVT device 3 to the low speed side is fed to an electric motor 23, the assist force of the electric motor 23 and the CVT device 3 are balanced, and the shift operation unit 26 and the CVT device 3 are held at a desired operating position (shift position). When the running load applied to the machine body is reduced, the feeding of the holding current is stopped.
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Inventors:
Hiroaki Ema
Suezo Ueda
Minoru Hiraoka
Mineyoshi Motomura
Suezo Ueda
Minoru Hiraoka
Mineyoshi Motomura
Application Number:
JP22149295A
Publication Date:
July 24, 2000
Filing Date:
August 30, 1995
Export Citation:
Assignee:
Kubota Corporation
International Classes:
F16H9/18; F16H59/06; F16H61/28; F16H61/36; F16H63/06; (IPC1-7): F16H63/06; F16H9/18; F16H59/06; F16H61/28; F16H61/36
Domestic Patent References:
| JP560231A | ||||
| JP3149455A | ||||
| JP66819U |
Attorney, Agent or Firm:
Shuichiro Kitamura