Toyota Jidosha Kabushiki Kaisha

Kabushiki Kaisha Toyota Chuo Kenkyusho

Yuuki Masui

Akihiko Ichikawa

Isamu Shiotsu

Takeshi Kamiya

Shinichi Takeuchi

Jun Yabuta

Yasumitsu Osada

Tomohiro Yoshimura

Yukihiro Inaba

Tomoyasu Kurimoto

Junichi Muraoka

A dog clutch for a vehicle includes gear-side meshing teeth provided on a shifting gear fitted so as to be rotatable relative to a shaft, and a dog ring disposed adjacent to the shifting gear in the axial direction of the shaft. The dog ring includes a first ring, a second ring, and springs interposed between the two rings. The first ring is provided with meshing teeth that can be meshed with the gear-side meshing teeth of the shifting gear. The second ring is provided with meshing teeth that can be meshed with the gear-side meshing teeth of the shifting gear. The springs are provided on the inner peripheral side of a circle that is centered on a rotational axis and that circumscribes a portion of the meshing teeth of the first ring and the second ring positioned on the outermost peripheral side.

Dog clutch for vehicle

A dog clutch includes a gear () mounted on a power transmission shaft (), first and second dog rings (), a fork (), springs (), and cam grooves (). The cam grooves () each include a first slope surface () inclined from the axial direction toward the positive rotation direction as the first slope surface () approaches the gear () and a second parallel surface () parallel to the axial direction. The first dog ring () includes first cam protrusions () to be engaged with the respective first slope surfaces (), and the second dog ring () includes second cam protrusions () to be engaged with the respective second parallel surfaces (). 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.

Dog clutch and transmission

Growing community of inventors

Anjo, Japan

Yuuki Masui