CN2584888Y

CN2584888Y - Metal vane

Info

Publication number: CN2584888Y
Application number: CN 02261177
Authority: CN
Inventors: 江伟君; 余国炯
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-10-30
Filing date: 2002-10-30
Publication date: 2003-11-05
Anticipated expiration: 2012-10-30

Abstract

The utility model relates to a metal wind impeller used as a cooling fan or doubling as a belt pulley, comprising a shaft sleeve (1) and metal impeller assemblies (2, 3), wherein, one end (11) of the shaft sleeve penetrating through the central holes of the metal impeller assemblies are relatively axially fixed. The utility model is characterized in that contact end surfaces of the shaft sleeve (1) and the metal impeller assemblies (2, 3) are respectively provided with a plurality of concave-convex positions (11), (21) at intervals, and the concave-convex positions (11) on the shaft sleeve are mutually staggered and inlaid with the concave-convex positions (21) on a corresponding metal impeller. For the metal wind impeller only used as the cooling fan, the metal impeller assemblies can be a single metal impeller; for the metal wind impeller doubling as the belt pulley, the metal impeller assemblies can be composed of an inner and outer metal impellers anchored together at the abutted surface, and sides of the impellers are formed into a V-slot in which a belt is embedded. The utility model enhances the circumferential steady connection between the shaft sleeve and the metal impeller assemblies, so as to thoroughly stop the slip phenomena caused by looseness between the shaft sleeve and the metal impeller assemblies and to prolong product service life.

Description

A kind of metal fan blade

Technical field

The utility model relates to a kind of metal fan blade as cooling fan or double as belt pulley.

Background technique

Existing metal fan blade as cooling fan, generally comprise an axle sleeve that links to each other with motor output shaft, the center fixation one of the outer end of axle sleeve and metallic impeller, usually, the outer end by axle sleeve pass the central hole of metallic impeller and slightly flange make both rivet clasp one.In existing washing machine, similar metal fan blade is the double as belt pulley also, constitute by axle sleeve and inside and outside two metallic impeller, inside and outside two metal wheel are in its faying surface place anchoring one, and form a V-shaped groove at side and embed wherein for belt, and the outer end of axle sleeve still passes the central hole of two metallic impeller and flange and rivet clasp slightly.The defective of this structure is, in the axial direction fixing very stable between axle sleeve and the metallic impeller, but it is fixing not enough what make progress in week, owing to no matter be as cooling fan or belt pulley, all need bear bigger circumferential moment of torsion, service time one is long, skids because of loosening easily between axle sleeve and the metallic impeller, thereby influences its normal function.

Summary of the invention

Technical problem to be solved in the utility model is no matter provide at above-mentioned prior art present situation between a kind of axle sleeve and the metallic impeller be axially or circumferentially all to be connected firm metal fan blade.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: this metal fan blade includes axle sleeve and metallic impeller assembly, one end of axle sleeve passes the central hole of metallic impeller assembly and fixing to axial, it is characterized in that at axle sleeve and metallic impeller assembly at both contacted end faces along circumferentially respectively being arranged at intervals with a plurality of concavo-convex positions, and the concavo-convex position on the axle sleeve is staggered also uneven with the concavo-convex position on the respective metal impeller mutually.

The axial restraint mode of described axle sleeve and metallic impeller assembly can be end flange and the rivet clasp one slightly of the axle sleeve central hole that passes metallic impeller;

As the metal fan blade of cooling fan, described metallic impeller assembly can be the single metal impeller for only; For the metal fan blade of double as belt pulley, described metallic impeller assembly can be made of inside and outside two metallic impeller, and both are in its faying surface place anchoring one, and forms a V-shaped groove at side and embed wherein for belt.

Compared with prior art, the scarf mutually at a plurality of concavo-convex positions by circumferential setting between axle sleeve of the present utility model and its contacted metallic impeller closes, thereby strengthened circumferentially firmly being connected between axle sleeve and the metallic impeller assembly greatly, thereby thoroughly stop between axle sleeve and the metallic impeller assembly because of loosening phenomenon of skidding takes place, thereby prolong product working life greatly.

Description of drawings

Fig. 1 is the utility model embodiment's a structure cross-sectional schematic.

Fig. 2 is the utility model embodiment's a perspective exploded view.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As shown in Figure 1 and Figure 2, be one to be used for the metal fan blade of washing machine, double as belt pulley, include axle sleeve 1 and inside and outside two

metallic impeller

2,3;

Wherein two

metallic impeller

2,3 are in its faying surface place anchoring one: interior metallic impeller 2 has six apertures 22 at the faying surface place, and outer metallic impeller 3 then is provided with that six projections 31 insert wherein and flange and anchoring slightly at corresponding site, referring to Fig. 1; And this two

metallic impeller

2,3 forms a V-shaped groove at side and embeds wherein for belt, referring to Fig. 1;

One end 11 of axle sleeve 1 passes the central hole of two

metallic impeller

2,3 and flange and with two metallic impeller, 2,3 rivet clasp one slightly, referring to Fig. 1, wherein circumferentially respectively be arranged at intervals with a plurality of concavo-

convex positions

11,21 on both contacted end faces edges in axle sleeve 1 and interior metallic impeller 2, referring to Fig. 2, and stagger mutually with the concavo-convex position 21 on the interior metallic impeller and be uneven in the concavo-convex position on the axle sleeve 11, referring to Fig. 1.

Claims

1, a kind of metal fan blade, include axle sleeve and metallic impeller assembly, one end of axle sleeve passes the central hole of metallic impeller assembly and fixing to axial, it is characterized in that at axle sleeve and metallic impeller assembly at both contacted end faces along circumferentially respectively being arranged at intervals with a plurality of concavo-convex positions, and the concavo-convex position on the axle sleeve is staggered also uneven with the concavo-convex position on the respective metal impeller mutually.

2, metal fan blade according to claim 1, the axial restraint mode that it is characterized in that described axle sleeve and metallic impeller assembly are end flange and the rivet clasp one slightly of the axle sleeve central hole that passes metallic impeller.

3, metal fan blade according to claim 1 and 2 is characterized in that for described metallic impeller assembly be the single metal impeller.

4, metal fan blade according to claim 1 and 2 is characterized in that being made of inside and outside two metallic impeller for described metallic impeller assembly, and both are in its faying surface place anchoring one, and forms a V-shaped groove at side and embed wherein for belt.