JPH0440190U

JPH0440190U -

Info

Publication number: JPH0440190U
Application number: JP8281390U
Authority: JP
Priority date: 1990-08-06
Filing date: 1990-08-06
Publication date: 1992-04-06

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例を示した断面側面
図、第２図は同じく第２実施例を示した断面側面
図、第３図は従来の技術の１つの例を示した断面
側面図、第４図は第３図の切断線Ａ−Ａに沿う断
面正面図、第５図は従来の技術のもう１つの例を
示した断面側面図である。１……軸、１ａ……軸先端部、２……インペラ
、２ａ……ボス部、２ｂ……ボス先端部、３……
嵌輪、３ａ……抜出し用ねじ部、４……座金、５
……軸端ナツト、６……軸とインペラの嵌合部、
７……インペラと嵌輪の嵌合部、８，９……軸と
嵌輪の嵌合部、１０……インペラの最大周方向応
力発生点。 Fig. 1 is a cross-sectional side view showing a first embodiment of the present invention, Fig. 2 is a cross-sectional side view showing the second embodiment, and Fig. 3 is a cross-sectional side view showing an example of the conventional technology. 4 is a sectional front view taken along the cutting line A--A in FIG. 3, and FIG. 5 is a sectional side view showing another example of the conventional technique. 1... Shaft, 1a... Shaft tip, 2... Impeller, 2a... Boss, 2b... Boss tip, 3...
Fitting ring, 3a...Extraction screw part, 4...Washer, 5
...shaft end nut, 6...shaft and impeller fitting part,
7... Fitting part between the impeller and the fitted ring, 8, 9... Fitting part between the shaft and the fitted ring, 10... Maximum circumferential stress generation point of the impeller.

Claims

[Claims for Utility Model Registration] 1. A fitting ring provided between the vicinity of the tip of the shaft and the vicinity of the boss tip of the impeller, and the outer peripheral surface of the shaft and the inner peripheral surface of the boss of the impeller. The direct contact surfaces are loosely fitted, and the circumferential surface near the tip of the boss and the circumferential surface of the fitting ring are fitted with a tightness that does not loosen even if the impeller is deformed during rotation, An impeller support structure, characterized in that an outer circumferential surface near the tip of the shaft and an inner circumferential surface of the fitting ring are removably slidably fitted. 2 The fitting interference between the circumferential surface near the impeller boss tip and the circumferential surface of the fitted ring is 11,000 to 2 in terms of diameter ratio.
1000. The impeller support structure according to claim 1, wherein the impeller has a diameter of 1,000. 3. The impeller support structure according to claim 1, wherein the inner circumferential surface near the tip of the boss and the outer circumferential surface of the fitting ring are fitted with an interference that does not loosen even if the impeller is deformed during rotation. 4. The impeller support structure according to claim 1, wherein the outer circumferential surface near the tip of the boss and the outer circumferential surface of the fitting ring are fitted with an interference that is sufficient to prevent loosening even if the impeller is deformed during rotation. 5. The impeller according to claim 1, 2, 3 or 4, wherein the impeller is an impeller for a turbocharger, and the impeller and the fitting ring are fastened to the shaft via a washer and a shaft end nut. Support structure.