JPH0370054U

JPH0370054U -

Info

Publication number: JPH0370054U
Application number: JP13225789U
Authority: JP
Priority date: 1989-11-14
Filing date: 1989-11-14
Publication date: 1991-07-12

Description

[Brief explanation of drawings]

第１図〜第３図はこの考案の一実施例によるフ
アンの取付構造を示し、第１図ａは断面図、第１
図ｂは第１図ａの−線の部分断面図、第２図
ａはフアンの詳細断面図、第２図ｂは第２図ａの
Ａ−Ａ線の断面図、第３図ａは回転軸のセンタ穴
詳細断面図、第３図ｂは回転軸のセンタ穴側面図
、第４図はこの考案の他の実施例を示すフアンの
取付構造を示し、第４図ａはフアンの詳細断面図
、第４図ｂは第４図ａのＢ−Ｂ線の断面図、第５
図は従来のフアンの取付構造を示し、第５図ａは
断面図、第５図ｂは第５図ａの部分断面図である
。図において、１……フアン、２……キー状突起
、３……円筒状突起、４……回転軸である。なお
、図中、同一符号は同一、又は相当部分で示す。 Figures 1 to 3 show a fan mounting structure according to an embodiment of this invention, and Figure 1a is a cross-sectional view;
Figure b is a partial sectional view taken along line - in Figure 1 a, Figure 2 a is a detailed sectional view of the fan, Figure 2 b is a sectional view taken along line A-A in Figure 2 a, and Figure 3 a is a rotational view. FIG. 3b is a detailed cross-sectional view of the center hole of the shaft, FIG. 3b is a side view of the center hole of the rotating shaft, FIG. 4 is a fan mounting structure showing another embodiment of this invention, and FIG. 4a is a detailed cross-sectional view of the fan. Figure 4b is a sectional view taken along line B-B in Figure 4a,
The figures show a conventional fan mounting structure, with FIG. 5a being a sectional view and FIG. 5b being a partial sectional view of FIG. 5a. In the figure, 1...Fan, 2...Key-shaped projection, 3...Cylindrical projection, 4...Rotation shaft. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

In fans used to cool rotating electric machines,
A fan mounting structure characterized by having a key-shaped protrusion on the inner diameter of the boss part of the fan to prevent it from turning, and a cylindrical protrusion in the center of the boss part to prevent it from coming off.