Ihi Corporation

Masatoshi Eguchi

Kuniaki Iizuka

Yasushi Asada

Toshihiko Kitazawa

Osamu Kagimoto

Masashige Takahashi

Yohei Suruga

Suguru Katayama

Masahiro Shimizu

Kenji Ishikawa

Kazuhiro Onitsuka

Hideumi Ohkuma

Asako Yasui

An actuator power transmission mechanism includes: a first lever that rotates by power of an actuator; a drive shaft that has one end fixed to the first lever and rotates integrally with the first lever; one or more nozzle vanes that are directly or indirectly coupled to the other end side of the drive shaft, rotate interlocking with the drive shaft, and adjust an inclination angle with respect to a flow direction of a fluid; and a bearing that has an insertion hole through which the drive shaft is inserted, and that rotatably supports the drive shaft, and a suppression portion that suppresses infiltration of water that runs along an outer peripheral surface of the bearing into the insertion hole is provided at the outer peripheral surface of the bearing.

Actuator power transmission mechanism and turbocharger

A shaft includes: two large-diameter portions; and a small-diameter portion formed between the two large-diameter portions. A bearing includes: an annular body in which to insert the shaft; two bearing surfaces being opposite the large-diameter portions; and an intervening surface located between the two bearing surfaces on an inner circumferential surface of the body, and being opposite the small-diameter portion with a clearance formed between the intervening surface and the small-diameter portion. No anti-corrosion treatment is applied to the large-diameter portions. An anti-corrosion treatment is applied to at least any one of: an exposed portion of an outer peripheral surface of the body of the bearing, which is exposed to the outside of the housing; the intervening surface of the bearing; an opposite end surface of the bearing; and the small-diameter portion of the shaft.

Bearing structure and turbocharger

The invention provides a supercharger which is provided with a thrust bearing in an outer side of a radial bearing, and can smoothly discharge a fed lubricating oil from a bearing portion so as to reduce a resistance generated by the lubricating oil. The supercharger is provided with a thrust bearing () rotatably supporting a thrust force applied to a turbine shaft (). The thrust bearing () is constituted by a disc-shaped thrust collar () rotating together with the turbine shaft, and a turbine side thrust bearing () and a compressor side thrust bearing () inhibiting a movement in an axial direction of the thrust collar. The compressor side thrust bearing () has an oil feed flow path () feeding a lubricating oil to a surface coming into contact with a thrust collar from an inner side of a housing, an annular concave groove () provided in an inner surface of a hollow through hole through which the turbine shaft passes, and an oil discharge flow path () dropping down the lubricating oil reserved within the concave groove downward.

Supercharger

Growing community of inventors

Tokyo, Japan

Masatoshi Eguchi