Title:
The joining structure of nozzle Vane and a lever, a joining method, and the amount type turbocharger of good changes
Document Type and Number:
Japanese Patent JP6234478
Kind Code:
B2
Abstract:
An object is to provide a structure and a method of joining a nozzle vane and a lever, and a variable geometry turbocharger, capable of reducing breakage of a welded part between a shaft portion of the nozzle vane and the lever during usage of the same by reducing generation of a hot crack in weld metal at the welded part. A joint structure includes: a nozzle vane 2 disposed in an exhaust passage for guiding exhaust gas to a turbine wheel 34 of a variable geometry turbocharger 500, and including a shaft portion 2a; and a lever 1 including a fitting surface 42a fitted with a peripheral surface 72 on one end side of the shaft portion, for transmitting torque to the shaft portion to adjust a vane angle of the nozzle vane. Weld metal 50 at a welded part 40 between the lever and the nozzle vane is formed so that a center position 64 of the weld metal is disposed inside a position 17 of the fitting surface with respect to a radial direction of the shaft portion.
Inventors:
Takahiro Arai
Hitomi Otsubo
Hitomi Otsubo
Application Number:
JP2015553243A
Publication Date:
November 22, 2017
Filing Date:
December 16, 2013
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
F02B37/24; F02B39/00
Domestic Patent References:
| JP3239935A | ||||
| JP2002256876A | ||||
| JP2010151008A | ||||
| JP2012149612A | ||||
| JP2013108918A | ||||
| JP2012000618A |
Attorney, Agent or Firm:
Seishin ip patent business corporation