CN2685613Y

CN2685613Y - Micro fan with improved colour circle structure

Info

Publication number: CN2685613Y
Application number: CN 200320109202
Authority: CN
Inventors: 陈士清
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-10-21
Filing date: 2003-10-21
Publication date: 2005-03-16
Anticipated expiration: 2013-10-21

Abstract

The utility model relates to a micro fan in order to improve the colour circle structure of the existing micro fan. A micro fan with improved colour circle structure comprises upper and lower casings, a motor arranged inside and a colour circle between the upper and lower casings. The stator of the motor comprises upper and lower claw poles, coils arranged inside and a shaft, the upper end of the stator is connected with a connecting shaft by the shaft, the lower end of the stator is positioned on the lower casing by the shaft, and the rotor of the motor comprises a shell, blades and a permanent magnet fixed on the colour circle. The utility model has the advantages that the permanent magnet is fixed on the colour circle, the manufacture of the lower casing is simpler, and the production cost can be greatly saved. The mode that the permanent magnet is connected on the metallic ferrule in a bonding way is changed into the mode that the permanent magnet is directly inserted in the groove of the colour circle, so the procedure of bonding and removing the glue on the lower casing is omitted, which decreases the assembly time and saves the assembly cost.

Description

Improve the micro fan of colour circle structure

Technical field

The utility model relates to a kind of micro fan, particularly a kind of micro fan that changes colour circle structure.

Background technique

Micro fan is simple in structure because of it, air quantity is moderate, volume is little, little power consumption has obtained using widely, its common structure is: comprise upper and lower casing and built-in motor thereof, the rotor of motor is made up of shell and the permanent magnet fixed on it, permanent magnet is fixed on the lower shell body by metal ferrules, stator is made up of the last lower claw utmost point and the coil that is placed in one thereof, and the motor bearing axle is extremely gone up at lower claw by fixed by nut after passing motor stator.There is following shortcoming in this structure: because the permanent magnet of motor need be fixed on the lower shell body, therefore make relatively difficulty of lower shell body with injection moulding process; Also, waste time and energy owing to need therefore to need to remove the glue that sticks on the housing with adhering method fixing metal lasso.

Summary of the invention

Technical problem to be solved in the utility model is to overcome the above-mentioned shortcoming that present micro fan exists and a kind of micro fan that improves chromosphere and lower shell body structure is provided, and makes that its making is easier, cost is lower.

The utility model solves the problems of the technologies described above the technological scheme that is adopted:

Improve the micro fan of colour circle structure, comprise upper and lower casing and built-in motor thereof and the chromosphere between last lower shell body, the stator of motor is made up of the last lower claw utmost point, the coil that is placed in one and axle, the stator upper end is connected with coupling shaft by its axle, the lower end is positioned on the lower shell body by its axle, the rotor of motor is made up of shell, blade and permanent magnet, and described permanent magnet is fixed on the chromosphere.

Described permanent magnet is fixed by the groove on the chromosphere.

Compared with prior art, advantage of the present utility model is permanent magnet is fixed on the chromosphere, and is easier when making lower shell body, therefore can save cost of production greatly.Also change on the metal ferrules in the groove that directly is inserted in chromosphere, save bonding and step that remove glue on the lower shell body, reduce installation time, thereby save assembly cost by permanent magnet is connected in by adhering method.

Description of drawings

Fig. 1 is the utility model embodiment's a structural representation.

Embodiment

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

As shown in Figure 1, the micro fan of improvement colour circle structure comprises starting box 1, suspension rod 2, upper shell 3, lower shell body 18 and coupled fan blade 20; Upper shell 3 also is embedded with chromosphere 4 with lower shell body 18 joints; Suspension rod 2 bottoms are connected with armature built-up shaft 15 by screw 14; 15 times overcoat upper cores 16 of armature built-up shaft, winding 9, the dewclaw utmost point 5, the lower claw utmost point 17 on the upper and lower sleeve, constitute motor stator, the lower claw utmost point 17 is fixed on the built-up shaft 15 with screw 10 by the hole on it, positioning shaft 19 is fixed on the inside of built-up shaft 15 and passes built-up shaft 15 axle center, pass down in the axle sleeve of center of lower shell body 18, the lower end is fixing by back-up ring 12, and whole like this motor stator can be positioned on the central position; Chromosphere 4 heads are fixed plate 21, to permanent magnet 18 should be arranged, and are bonded on the metal ferrules 22 and are fixed on chromosphere 4 fixed plates 21 outside stator, constitute rotor, lower shell body 18 center dress trims 13, and leaf head has projection 22, is buckled in the groove 23 of chromosphere.

Also available slot on the fixed plate 21 of chromosphere 4 heads, so corresponding permanent magnet 18 just can directly be inserted in the slot, saves metal ferrules 22, and is also bonding without glue.

The principle of this type of electric fan is known by those of ordinary skill, therefore no longer explanation.

Claims

1, improves the micro fan of colour circle structure, comprise upper and lower casing and built-in motor thereof and the chromosphere between last lower shell body, the stator of motor is made up of the last lower claw utmost point, the coil that is placed in one and axle, the stator upper end is connected with coupling shaft by its axle, the lower end is positioned on the lower shell body by its axle, the rotor of motor is made up of shell, blade and permanent magnet, it is characterized in that: described permanent magnet is fixed on the chromosphere.

2, the micro fan of improvement colour circle structure as claimed in claim 1 is characterized in that: described permanent magnet is fixed by the slot on the chromosphere.

3, improve the micro fan of colour circle structure as claimed in claim 1 or 2, it is characterized in that: described leaf head has projection, is buckled in the vanes fixed groove of chromosphere.