JPS6246636U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案セラミツク製タービンロータ軸
の接合構造の一例を示す断面図、第２図は本考案
を適用したターボ過給機の断面図、第３図は本考
案の他の実施例の断面図、第４図は従来のセラミ
ツク製タービンロータ軸の接合構造の一例を示す
断面図である。 １，１１……セラミツクロータ軸、２，１２…
…金属軸、１Ａ……開先面、２Ａ……細径軸部、
２Ｂ……太径軸部、３……ろう付、４……軸受部
、１１Ａ，１２Ａ……接合軸部、１１Ｂ，１２Ｂ
……嵌合部、１３……セラミツクコーテイング層
、１４……圧縮機インペラ、１５……タービンロ
ータ、１６……スラストカラー、１７……ベアリ
ングハウジング。 Fig. 1 is a cross-sectional view showing an example of the joining structure of the ceramic turbine rotor shaft of the present invention, Fig. 2 is a cross-sectional view of a turbocharger to which the present invention is applied, and Fig. 3 is a cross-sectional view of another embodiment of the present invention. 4 is a sectional view showing an example of a conventional ceramic turbine rotor shaft joint structure. 1, 11... Ceramic rotor shaft, 2, 12...
...metal shaft, 1A...grooved surface, 2A...small diameter shaft part,
2B... Large diameter shaft part, 3... Brazing, 4... Bearing part, 11A, 12A... Joint shaft part, 11B, 12B
... Fitting portion, 13 ... Ceramic coating layer, 14 ... Compressor impeller, 15 ... Turbine rotor, 16 ... Thrust collar, 17 ... Bearing housing.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 金属軸とろう付接合されるセラミツク製タービ
ンロータ軸の接合構造において、前記ろう付接合
の接合部を介して互いに接合される前記金属軸お
よび前記セラミツク製タービンロータ軸の軸部分
の双方の直径を前記タービンロータ軸の直径より
も小さい同一直径となし、前記ろう付のなされた
状態で前記接合部にまたがる双方の前記軸部分の
周面にセラミツクの層を設けたことを特徴とする
セラミツク製タービンロータ軸の接合構造。 In a joint structure of a ceramic turbine rotor shaft that is joined to a metal shaft by brazing, the diameters of both the shaft portions of the metal shaft and the ceramic turbine rotor shaft that are joined to each other via the joint portion of the brazing joint are A ceramic turbine having the same diameter smaller than the diameter of the turbine rotor shaft, and having a ceramic layer provided on the circumferential surface of both shaft portions spanning the joint portion in the brazed state. Joint structure of rotor shaft.