JPS60104799A - Fan motor of electric cleaner - Google Patents

Abstract

PURPOSE:To prevent lead wires from being cut, by forming the outside construction of a fan case, which encloses the fan motor of an electric cleaner etc., polygonally and thereby preventing rotation of the fan motor round its own axis. CONSTITUTION:The outside construction of a fan case 8, which encloses the fan of a fan motor of an electric cleaner etc., is made in a polygonal form such as tetragonally or hexagonally, and supported by a supporting rubber 22 fixed to the cleaner body 13. This serves preventing the fan motor 14 from rotating round its own axis when the motor is going to start or stop. The polygonal form increases rigidity to provide possibility of making the construction through molding from a heat resistant resin. In case the fan motor 14 is installed horizontally, one of the corners of the fan case 8 shall be located below so as to provide bearing capacity for its own weight as well as impact load directed downward.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a fan motor used in a vacuum cleaner or the like.

Conventional configuration and its problems Traditionally, in fan motors used in vacuum cleaners, etc., as shown in Figure 1, there is a motor installed at one end (front part) of the motor (a fan that rotates at a high speed of 1 digit). The fan case 2 (not shown) is formed into a cylindrical shape, and its material is usually iron plate.

When this fan motor is built into the main body of a vacuum cleaner or the like, the fan case 2 and the support portion 3 formed at the rear of the motor 1 are supported by the main body via support rubber.
As mentioned above, both the fan case 2 and the support part 3 are formed in a cylindrical shape, and the problem is that the fan motor rotates on its own axis when the fan motor starts and stops, and the lead wire connecting the fan motor and the power cord breaks. was there.

As a countermeasure against this problem, there were some models in which the fan case 2 and the support rubber, and the support rubber and the main body were assembled in pressure contact with each other, but the rotational vibrations of the fan motor were transmitted to the main body, increasing noise. Ta.

In addition, as another countermeasure, there were some that adhered the fan case 2 and support rubber or the main body, but since the fan motor generates heat, the adhesive deteriorates and the adhesion is not reliable, and the assembly time is increased. There was a problem that it took a while.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional problems, and provides a fan motor for a vacuum cleaner, etc., which has improved reliability and ease of assembly, and further reduces noise.

Composition of the Invention In the fan motor of the present invention, the outer shape of the fan case that stores the fan attached to the front part of the motor is formed into a polygonal shape to easily prevent rotation of the fan motor. This eliminates cutting accidents.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

In Figures 2 to 4, 4 is a motor, one end of which (
07 is an air guide for flowing the air sucked in by 71 into the motor 4, and is attached to the front of the motor 4. There is.

Note that the air guide 7 also serves to effectively bring out the performance of the fan 6.

Reference numeral 8 denotes a fan case that covers the 77 fan 6 and the air guide 7 and has a suction port 9 formed in the center thereof, and its outer shape is a polygon such as a quadrangle or a hexagon.
It is press-fitted and fixed to the front part of the motor 4.

Reference numeral 10 denotes an air outlet formed at the other end (rear part) of the motor 4. Air is sucked in through the suction port 9, passes through the interior of the motor 4, and is discharged from the exhaust port 1o.

Incidentally, the motor 4 is also cooled. 11 is a lead wire for supplying power to the motor 4.

12 is a cylindrical support part formed at the rear of the motor 4;
As shown in the figure, when a fan motor 14 is built into the cleaner body 13, it is used for support in the cleaner body 13 via a support rubber 15.

Reference numeral 16 denotes a press-fit wall formed in the fan case 8, which is formed into a cylindrical shape so as to be inscribed in a polygon, and is press-fit into the front part of the motor 4 as described above. The space 17 is formed by the press-fit wall 16 and a polygonal outer wall 18.

Further, the fan case 8 has rigidity and is made of a heat-resistant resin.

In the above configuration, the fan case 8 is a polygonal column;
Compared to conventional cylinders, the rigidity is significantly improved, the impact strength is increased, the fan case 8 can be made of resin, the resonance frequency of the fan case 8 changes, and vibrations are reduced.

Furthermore, since the polygonal corner of the fan case 8 is formed with a space 17, the vibration damping effect is greater, and the reduction in vibration is significant.Next, the fan motor is cleaned. The structure built into the main body 13 of the vacuum cleaner is explained with reference to FIG. . The boat removal machine main body 13 has a fan motor 14 built into its front part and a cord winding device 20 built into its rear part, and a discharge port 1 of the motor 4 is built into the rear wall of the vacuum cleaner main body 13.
A main body exhaust port 21 is formed in the exhaust gas discharged from the 'IC body for discharging it to the outside of the IC body.

The fan motor 14 has its fan case 8 and support portion 12 supported by the cleaner body 13 via support rubber 22.15i.

As shown in FIG. 6, one corner of the fan case 8 is placed at the bottom to receive its own weight and downward impact load.

Reference numeral 23 indicates a protrusion formed on the support rubber 22, which is positioned by the vacuum cleaner main body 13.
This serves as a zero rotation stopper.

Effects of the Invention As is clear from the above embodiments, the present invention improves the rigidity of the fan case by forming it in a polygonal shape, and also prevents the fan motor from rotating when starting, stopping, or due to impact, which was a problem in the past. This is to ensure that the wires are secure and eliminate breakage of lead wires, etc.

Furthermore, as described above, the fan case has a rigid configuration and vibrations are attenuated, so that there is less transmission of vibrations to a vacuum cleaner, etc., and noise is also reduced.

[Brief explanation of drawings]

FIG. 1 is an external perspective view of a conventional fan motor, FIGS. 2 and 3 are external perspective views of a fan motor according to an embodiment of the present invention, and FIG. 4 is a cutaway sectional view of essential parts of the same fan motor. ,
FIG. 6 is a cutaway sectional view of a main part of a vacuum cleaner incorporating the same fan motor, and FIG. 6 is a sectional view from A to A in FIG. 6. 4... Motor, 5... Fan, 8...
Fan case, 11... Lead wire, 13...
...The main body of a vacuum cleaner, etc., 14...Fan motor. Name of agent: Patent attorney Toshio Nakao and 1 other person 1st
Figure 2 Figure 1'1 3rdrB Figure I J

Claims (2)

[Claims] (1) A fan motor for a vacuum cleaner, etc., in which a fan case that covers a fan attached to one end of the motor has a polygonal outer shape. (2) The front part of the fan motor is attached to the main body of the vacuum cleaner, etc., so that one corner of the polygonal fan case is at the bottom, or the vicinity thereof, to mainly receive its own weight and impact load. A built-in fan motor for a vacuum cleaner or the like according to claim 1.