JPS59132363U

JPS59132363U - squirrel cage induction motor

Info

Publication number: JPS59132363U
Application number: JP2420083U
Authority: JP
Inventors: 下城　紀雄
Original assignee: 株式会社安川電機
Priority date: 1983-02-21
Filing date: 1983-02-21
Publication date: 1984-09-05

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

[Brief explanation of the drawing]

示１図は従来例の上半部の断面を示す側断面図、第２図
は第１図における冷却ファンの羽根を示す平面図、第３
図は第１図における冷却ファンの羽根を示す側断面図、
第４図は本考案の一実施例の上半部を断面で示す側面図
、第５図はそのかご形回転子の一端の構造を示す斜視図
、第６図および第７図は冷却ファンが短絡環に装着され
た取付状態の側断面図および平面図、第８図は本考案の
他の実施例の側断面図である。１・・・−・・かご形誘導電動機、２・・・・・・かご
形回転子、３・・・・・・冷却ファン、４・・・・・・
短絡環、５・・・・・・羽根、６・・・・・・回転軸、
７・８・・・・・・ブラケット、９・１０・・・・・・
軸受、１１・・・・・・通風ダクト、１２・・・・・・
フレーム、１３・・・・・・固定子、１４・・・・・・
コイルエンド、１５・１６・・・・・・吸気孔、１７・
１８・・・・・・導風板、１９・・・・・・排気孔、４
１・・・・・・突起、４２・・・・・・バランスウェイ
ト、４３・・・・・・支持リングを嵌挿し位置決めする
溝、５１・・・・・・支持リング、５２・・・・・・取
付穴。Figure 1 is a side sectional view showing the cross section of the upper half of the conventional example, Figure 2 is a plan view showing the blades of the cooling fan in Figure 1, and Figure 3 is a side sectional view showing the cross section of the upper half of the conventional example.
The figure is a side sectional view showing the blades of the cooling fan in Figure 1;
FIG. 4 is a side view showing a cross section of the upper half of an embodiment of the present invention, FIG. 5 is a perspective view showing the structure of one end of the squirrel cage rotor, and FIGS. 6 and 7 show a cooling fan. FIG. 8 is a side sectional view and a plan view of the short-circuit ring in an attached state; FIG. 8 is a side sectional view of another embodiment of the present invention. 1...--Squirrel cage induction motor, 2...Squirrel-cage rotor, 3...Cooling fan, 4...
Short-circuit ring, 5... blade, 6... rotating shaft,
7・8・・・Bracket, 9・10・・・・・・
Bearing, 11... Ventilation duct, 12...
Frame, 13... Stator, 14...
Coil end, 15, 16... Intake hole, 17.
18... Air guide plate, 19... Exhaust hole, 4
1...Protrusion, 42...Balance weight, 43...Groove for inserting and positioning the support ring, 51...Support ring, 52... ··Mounting holes.

Claims

[Claims for Utility Model Registration] 1. In a squirrel-cage induction motor having a squirrel-cage rotor formed by die-cast aluminum, on the axial end face of the short-circuit ring,
A squirrel-cage induction motor characterized in that a cooling fan is separately attached, which is constructed by annularly arranging a large number of blades with the same or almost the same wall thickness from the root to the tip. 2. The squirrel cage rotor has a large number of projections for mounting a balance weight on the axial end surface of the short circuit ring, and the blades of the cooling fan have mounting holes that correspond to the end surface of the short circuit ring and fit into the projections. provided on a support ring having a
The squirrel cage induction motor as claimed in claim 1, wherein this support ring is attached to the end of the short-circuit ring by fitting the mounting hole into the projection and caulking the projection. 3. A ring-shaped groove for positioning the cooling fan is formed at the end of the short-circuit ring of the squirrel-cage rotor, and a support ring for the cooling fan is fitted into this groove. The squirrel cage induction motor described in item 2. 4. The squirrel cage induction motor according to claim 1 or 2, wherein the blades of the cooling fan have the same or almost the same width from the root to the tip.