Title:
DOG CLUTCH AND TRANSMISSION
Document Type and Number:
WIPO Patent Application WO/2018/173488
Kind Code:
A1
Abstract:
A dog clutch includes a gear (40) mounted on a power transmission shaft (30), first and second dog rings (10, 20), a fork (60), springs (65), and cam grooves (31). The cam grooves (31) each include a first slope surface (36) inclined from the axial direction toward the positive rotation direction as the first slope surface (36) approaches the gear (40) and a second parallel surface (37) parallel to the axial direction. The first dog ring (10) includes first cam protrusions (16) to be engaged with the respective first slope surfaces (36), and the second dog ring (20) includes second cam protrusions (26) to be engaged with the respective second parallel surfaces (37). This structure prevents the dog rings and the fork from coming into contact with each other, thereby avoiding generation of abrasion and increasing the transmission efficiency.
Inventors:
SHIOTSU ISAMU (JP)
TAKEUCHI SHINICHI (JP)
ICHIKAWA AKIHIKO (JP)
MURAOKA JUNICHI (JP)
YOSHIMURA TOMOHIRO (JP)
YABUTA JUN (JP)
MASUI YUUKI (JP)
TAKEUCHI SHINICHI (JP)
ICHIKAWA AKIHIKO (JP)
MURAOKA JUNICHI (JP)
YOSHIMURA TOMOHIRO (JP)
YABUTA JUN (JP)
MASUI YUUKI (JP)
Application Number:
PCT/JP2018/003047
Publication Date:
September 27, 2018
Filing Date:
January 30, 2018
Export Citation:
Assignee:
TOYOTA CHUO KENKYUSHO KK (JP)
AISIN AI CO LTD (JP)
AISIN AI CO LTD (JP)
International Classes:
F16H3/083; F16D11/10
Domestic Patent References:
| WO2011088856A1 | 2011-07-28 | |||
| WO2016152286A1 | 2016-09-29 |
Foreign References:
| US3780840A | 1973-12-25 | |||
| JP2017026090A | 2017-02-02 |
Attorney, Agent or Firm:
YKI PATENT ATTORNEYS (JP)
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