KR100397184B1 - A device for fixing rotor in fan motor - Google Patents

Abstract

The present invention relates to a rotor fixing device for a fan motor.

In particular, it is a configuration for fixing the stator to which the armature coil is wound and the rotor installed to rotate by being inserted into the stator by mutual indentation.

Accordingly, the present invention relates to a rotor fixing device for a fan motor which fixes the rotor and the stator by a simple configuration to maintain a stable fastening force.

Description

Rotor fixing device of fan motor {A DEVICE FOR FIXING ROTOR IN FAN MOTOR}

The present invention relates to a rotor fixing device of a fan motor, and more particularly, to a rotor fixing device of a pen motor to maintain a stable fastening force by providing hook pieces to the stator of the fan motor and the rotor supported by the stator, respectively. will be.

In the conventional fan motor, the rotor supported by the stator is rotated by the supply of power to supply a predetermined amount of air through a fan connected to the rotor, and cools the electronic component generated by the fan. The configuration for fixing the is disclosed in the Republic of Korea Utility Model Publication (Registration No. 1994-7062).

The configuration is configured as a stator 30 in which the armature coil 34 is installed while being fixed inside the rotor 20 and the motor housing 10 in which the permanent magnet 23 is installed, as shown in FIG. When power is supplied to the 30, the rotor 20 is rotated by the reaction force between the stator 30 and the rotor 20.

In addition, the high intelligence 32 of the support frame 11 connected to the inside of the motor housing 10 protrudes so that the bearing 33 is mounted therein, and the armature coil is disposed on the outer diameter side of the high intelligence 32. 34 is wound.

In addition, the rotary shaft 21 is installed so as to be pressed into the bearing 33 to rotate, the fan 22 is fixed to the upper end, the magnet 23 is coupled to the bottom of the fan 22, the high information ( The sealing cap 32-1 is fixed to the bottom of the 32.

However, the rotor fixed structure as described above deforms the bearing 33 by pressing the rotary shaft 21 into the bearing 33 and supporting it with the fixing ring 21-1 in order to prevent separation of the rotary shaft 21. And deteriorates the function of the fan motor, as well as the possibility of noise and premature wear. When the rotary shaft 21 of the rotor 20 is separated, the bearing 33 itself is broken, thereby causing a serious functional problem. There is a disadvantage that causes.

An object of the present invention for improving the above problems, the rotor is fastened, the rotor fixing device of the fan motor to maintain a fastening force of the rotor, improve the workability according to the coupling of the rotor To provide.

1 is a cross-sectional view showing a conventional fan motor

Figure 2a, b is an exploded view showing a fan motor according to the present invention, respectively

Figure 3 is a sectional view showing the main part of the rotor fixed state of the fan motor according to the present invention;

Figure 4a, b is a cross-sectional view showing the main portion of the rotor fixed state of the fan motor according to another embodiment of the present invention

* Description of the symbols for the main parts of the drawings *

100 ... motor housing 210 ... rotation shaft

220 ... fan 320 ... high profile

340 Armature coil 420 Hook

To achieve the above objects, a rotor comprising a fan fixed to the rotating shaft and a magnet attached to the fan;

A stator in which a bearing is fixed to a support frame connected to the housing so that the rotating shaft is inserted, and an armature coil is installed on an upper side of the magnet to face the magnet;

It is to provide a rotor fixing device of the fan motor comprising a separation preventing means is installed on the rotor and the stator corresponding to each other so that one end of the rotor is pressed into one end of the stator.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2a, b is an exploded state diagram showing a fan motor according to the present invention, respectively, Figure 3 is a sectional view showing the main portion of the rotor fixed state of the fan motor according to the present invention, the present invention, the rotor 200 and the rotor ( 200 is configured as a stator 300 is connected to the inside of the housing 100 to be fixed and the separation preventing means 400 is installed to interconnect the motor 200 and the stator 300.

The rotor 200 is fixed to the fan 220, the magnet 230 is mounted on the upper end of the rotating shaft 210, the separation preventing means 400 is formed in the connecting portion of the rotating shaft which is a lower portion of the fan 220.

The stator 300 to which the rotating shaft 210 of the rotor 200 is inserted and rotated has a high intelligence 320 protruding from the upper side of the central portion of the support frame 310 connected to the motor housing 100. The bearing 330 is mounted, the separation prevention means 400 is installed at the upper end of the high information 320, the armature coil 340 on the upper side of the support frame 310, the outer diameter side of the high information 320. Is fitted.

The separation prevention means 400 for fixing the rotor 200 and the stator 300 to each other, the inclined surface (S) which is mutually slid while being mutually corresponding to the bottom of the fan 220 and the top of the high information 320. It consists of the hook piece 420 formed.

In addition, in the case where the hook piece 420 is integrally formed with the high intelligences 320, the through hole 310-1 for the mold is formed on the inner diameter side of the high intelligences 320 formed on the support frame 310. The sealing cap 320-2 is fixed thereto.

On the other hand, Figure 4a, b is a sectional view showing the main portion of the rotor fixed state of the fan motor according to another embodiment of the present invention, the separation preventing means 400 of the present invention is separated from the bottom of the fan 220 is in close contact with The hook piece 420 and the hook piece 420 which are separated and supported by the outer diameter side of the high information 320 are comprised.

In addition, when the hook piece 420 integrally formed at the upper end of the high intelligence 320 is applied to the inner diameter of the high intelligence 320 of the support frame 310, a separate through hole for a mold is unnecessary.

In addition, the hook piece 420 may be integrally formed in the circumferential direction, and as shown in FIG. 2B, a plurality of openings (not shown) may be interposed to maintain a constant elasticity.

Referring to the operation of the present invention made of such a configuration as follows.

2 and 3, the rotor 220 inside the bearing 330 of the stator 300 by the rotating shaft 210 is inserted into the bottom of the fan 220, the magnet 230 is attached to the bottom of the rotor (300) 200 is inserted, and the rotor 200 and the stator 300 are press-fitted and fixed to each other through the inclined surface S of both hook pieces without the need for a separate separation prevention structure.

The inclined surface S may be an inclined angle that allows the hook surfaces 420 on both sides to slide on each other on the inclined surface of the other side.

In addition, the hook piece may be integrally formed in the circumferential direction, but the opening may be formed so that the hook piece has a certain elasticity, and the inclined surface S of the rotor 200 and the stator 300 may be easily squeezed while mutually sliding. .

When the stator 300 connected to the inside of the rotor 200 and the housing 100 is press-fitted and fixed through the separation prevention means 400 formed of a hook piece, and then the electric magnet coil is supplied with power to the stator 300. The fan 220 is rotated by the reaction force of the 140 and the magnet 230, it is possible to be mutually stable coupling through the separation preventing means (400).

On the other hand, as shown in Figure 4a, the hook piece formed on the bottom of the fan 220 may be integrally formed in the center of the bottom of the fan 220, but is manufactured separately for convenience of the mold to be in close contact with the rotating shaft 210 Even if configured to bring the same effect as described above and the fan 220 integral hook piece.

In addition, as shown in Figure 4b, the hook piece provided on the top of the high information 320 may be formed integrally on the top of the high information 320, but is manufactured separately from the high information 320 for the convenience of the mold Even when configured to be press-fitted to the outer diameter side of the high information 320, the same effect as the hook piece formed integrally with the high information 320 described above.

In addition, although not shown in the drawing, the hook piece 420 formed at the bottom of the fan 220 and the top of the high intelligence 320 is mutually press-fitted to one side of the fan 220 and the high intelligence 320. The same effect can be obtained even when formed integrally, separately formed, or a combination thereof.

The hook piece 420 having an integrated structure with the high intelligence 320 is formed in the inner diameter side of the high intelligence 320 through-hole 310-1 for the mold to prevent the inflow of foreign matter through the sealing cap ( 320-2) is fixed.

Thus, according to the rotor fixing apparatus of the fan motor according to the present invention, the coupling of the rotor is quickly made by the assembling process of mutually press-fitting the hook pieces on both sides, thereby maintaining the stable clamping force of the rotor, as well as the work according to the coupling of the rotor It improves the properties, there is no need for a separate sealing cap has an excellent effect to minimize the number of parts and the assembly process.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as provided by the following claims. I would like to clarify that those who have knowledge of this can easily know.

Claims (5)

A rotor configured as a fan to which a rotating shaft is connected and a magnet attached to the fan, an armature coil corresponding to the magnet, and a bearing into which the rotating shaft is inserted are configured as a stator mounted to a support frame of the motor housing, and the rotating shaft is connected to the bearing. In the rotor fixing device of the fan motor that is fixed to the bottom when the fixing is fixed to maintain the fastening force of the rotor, Rotor fixing device of the fan motor, characterized in that the separation prevention means is installed so as to be pressed in and fixed to the center of the bottom of the fan and the top of the high information corresponding thereto. The rotor of claim 1, wherein the separation preventing means is formed as a hook piece which is formed at the center of the bottom of the fan and the upper portion of the high information corresponding thereto while having inclined surfaces sliding in close contact with each other. Fixture The rotor fixing device of a fan motor according to claim 1 or 2, wherein the detachment preventing means comprises a hook piece spaced apart by an opening in a circumferential direction. The rotor fixing of the fan motor according to claim 1 or 2, wherein the detachment preventing means is formed of a hook piece which is formed to be in close contact with the outer diameter of the high information while its end portion is formed to correspond to the hook piece of the fan. Device The rotor fixing apparatus of claim 1 or 2, wherein the separation preventing means comprises a hook piece which is formed to be in contact with the fan while being separated from the fan and pressed against the rotating shaft.