JPS6065400U - blower impeller - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は従来の送風機の軸方向断面図、第２図および第
３図はそれぞれこの考案の異なる実施例の軸方向縦断面
図であり、図中同一符号は同一部または相当部を示す。 なお、図中、２は羽根車、２１はそのボス、３は回転軸
、２３．２４はボス内周面のねじ、３２．３３は回転軸
外周面のわしである＝FIG. 1 is an axial sectional view of a conventional blower, and FIGS. 2 and 3 are axial longitudinal sectional views of different embodiments of this invention, and the same reference numerals in the figures indicate the same or equivalent parts. In the figure, 2 is an impeller, 21 is its boss, 3 is a rotating shaft, 23.24 is a screw on the inner circumferential surface of the boss, and 32.33 is a screw on the outer circumferential surface of the rotating shaft.

Claims (1)

【実用新案登録請求の範囲】 １　羽根車のボスと回転軸との嵌合部において、釉記ボ
スの内周面と前記回転軸の外周面とに、前記羽根車の回
転が前記回転軸の回転に対して間違れる時に前記ボスが
前記回転軸上に締付けられる方向の互いに螺合するねじ
を形成した送風機羽根車。　　　　　　　・ ２　ねじを設けた嵌合部をねじの締まる方向に直径が大
きくなるテーパ状にした実用新案登録請求の範囲第１項
記載の送風機羽根車。[Claims for Utility Model Registration] 1. At the fitting portion between the boss of the impeller and the rotating shaft, the rotation of the impeller is applied to the inner peripheral surface of the glazed boss and the outer peripheral surface of the rotating shaft. The blower impeller is formed with screws that are screwed into each other in a direction in which the boss is tightened onto the rotating shaft when the boss is rotated incorrectly. 2. The blower impeller according to claim 1 of the utility model registration claim, in which the threaded fitting portion has a tapered shape whose diameter increases in the direction in which the thread is tightened.