Koyo Seiko Company, Ltd.

Kabushiki Kaisha Toyota Jidoshokki

Naoki Usui

Taku Adaniya

Akinobu Kanai

Hideki Fujiwara

Hajime Watanabe

Minoru Mera

Tomoharu Arai

Takahiro Ichihara

Takahiro Suzuki

Shoichi Ieoka

Akihito Yamanouchi

A power transmission device includes a first one-way clutch that transmits a rotational power of a pulley to a rotating shaft, and a second one-way clutch that transmits a rotational power of a rotor of a motor to the rotating shaft. The first one-way clutch is of inner cam type in which an engagement cam-surface is formed in an outer periphery of a first inner ring, while the second one-way clutch is of outer cam type in which an engagement cam-surface is formed in an inner periphery of a second outer ring. This arrangement improves engagement performance of the first one-way clutch as well as reducing heat generation of the second one-way clutch, so that the lifetime of grease is prolonged.

Power transmission device

There is provided a one-way clutch unit that is simple in structure and compact. An annular recessis provided in an inner periphery of a side of a deep groove ball bearing portionof a first inner ringof a first one-way clutch, and an end portion on the side of a deep groove ball bearing portionof a second one-way clutchis disposed in the annular recess. Thereby, the dimension in an axial direction of the one-way clutch unit is reduced by a dimension in the axial direction of the second one-way clutchthat is disposed in the annular recess

One-way clutch unit

There is provided a compact one-way clutch unit that can perform connection and disconnection of power in two systems. An end portion on a side of a deep groove ball bearing portionof a second one-way clutchis disposed in an annular recess, which is provided at an end portion in an inner peripheral surface of a first inner ring, so that the dimension in an axial direction of a one-way clutch unit is reduced. Further, an outer peripheral diameter on a side of the deep groove ball bearing portionis made smaller than that on the side of a one-way clutch portionof a second outer ringso as to reduce a diameter of the recessand the outer peripheral diameter of the first outer ringof the first one-way clutch

One-way clutch unit and one-way clutch therefor

A hybrid compressor system has a hybrid compressor for compressing refrigerant. The compressor is selectively driven by one of a first drive source and a second drive source. The hybrid compressor system also includes a first one-way clutch, a driver for driving the second drive source, a sensor for detecting a rotational state of the first drive source and a controller. The first one-way clutch is arranged on a first power transmission path between the compressor and the first drive source for permitting power transmission from the first drive source to the compressor. The controller is electrically connected to the driver and the sensor. When a drive source of the compressor is switched from the second drive source to the first drive source, the controller orders the driver to stop the second drive source after the rotation of the first drive source is detected.

Hybrid compressor system

Growing community of inventors

Kariya, Japan

Naoki Usui