Title:
TRANSMISSION
Document Type and Number:
WIPO Patent Application WO/2017/026535
Kind Code:
A1
Abstract:
This transmission 20 has gears 421-426 and 441-446, sliders 451-453, an electric motor 58, a shift drum 50, shift forks 491-493, and a control unit 83. The sliders 451-453 are separate from the gears 421-426 and 441-446. The shift drum 50 has guide grooves 61-63 that include a straight line part 64 and an inclined part 65. One end of the shift forks 491-493 is positioned within the guide grooves 61-63. The control unit 83 controls the electric motor 58, and rotates the shift drum 50 in such a manner that the shifting angle of rotation is less than 60°. As a result of the shift drum 50 rotating by the shifting angle of rotation, the shift forks 491-493 move the sliders 451-453 in the axial line direction of the shafts 21, 22. As a result, the dog part of the sliders 451-453 mesh with the dog part of the gears 441-446, and the rotation of the shaft 21 is transmitted to the shaft 22.
Inventors:
TAKEUCHI YOSHIHIKO (JP)
Application Number:
PCT/JP2016/073680
Publication Date:
February 16, 2017
Filing Date:
August 10, 2016
Export Citation:
Assignee:
YAMAHA MOTOR CO LTD (JP)
International Classes:
F16H63/30; F16D11/10; F16H3/083; F16H3/091; F16H63/18
Foreign References:
| JP2014059002A | 2014-04-03 | |||
| JP2015117798A | 2015-06-25 | |||
| JP2014206233A | 2014-10-30 | |||
| JP2009197823A | 2009-09-03 |
Other References:
See also references of EP 3336391A4
Attorney, Agent or Firm:
BRIGHTAS IP ATTORNEYS (JP)
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