JPH02104783U

JPH02104783U -

Info

Publication number: JPH02104783U
Application number: JP1313589U
Authority: JP
Priority date: 1989-02-08
Filing date: 1989-02-08
Publication date: 1990-08-21

Description

[Brief explanation of the drawing]

第１図はこの考案に係る回転体の一部を断面と
した平面図、第２図はその正面図、第３図は従来
例の一を示すエデイカレントリターダーの断面説
明図、第４図は試験結果を示す温度比較線図であ
る。１……主軸、２０……回転子、３０……周壁部
、４０……底壁部、５０……軸方向フイン、５１
……冷却孔、５３……開口部。 Fig. 1 is a partially sectional plan view of the rotating body according to this invention, Fig. 2 is a front view thereof, Fig. 3 is a cross-sectional explanatory view of an educational current retarder showing one of the conventional examples, and Fig. 4 is It is a temperature comparison diagram showing test results. DESCRIPTION OF SYMBOLS 1... Main shaft, 20... Rotor, 30... Peripheral wall part, 40... Bottom wall part, 50... Axial fin, 51
...Cooling hole, 53...opening.

Claims

[Scope of utility model registration request]

A rotating body in an educational current retarder having a drum-shaped rotating body integrally formed with a main shaft, a circumferential wall portion parallel to and spaced from the main shaft, and a bottom wall portion fixed perpendicularly to the main shaft and rotating together with the main shaft,
A plate extending in the radial direction at the same pitch is formed on the peripheral wall portion 30 on the same axis at a radial position centering on the main shaft 1 from the edge of the opening 53 of the peripheral wall portion 30 and the edge near the bottom wall portion 40. The axial fins 50 are provided with a plurality of cooling holes 51 that are opened at the same pitch on the same circumference around the main shaft 1 and pass through the wall of the peripheral wall portion 30. A rotating body in an educational current retarder, characterized in that inner edges are formed to face each other on the center circle of the cooling hole 51 with a spacing margin.