KR20050108600A - A shaft holder for motor - Google Patents

Abstract

A rotating shaft holder of a motor is disclosed. The rotating shaft holder of the motor according to the present invention includes a bearing so as to simplify the bearing structure of using an oilless bearing by improving a simple supported bearing supporting one end of the rotating shaft of the motor and reducing the manufacturing cost of the motor. In the housing of the motor, an oilless bearing is installed in the first holder forming the housing so as to support the center of the rotation shaft of the motor, and a depression is formed in the center of the second holder forming the housing so as to support the end of the rotation shaft of the motor. The inside of the recess is provided with a bearing washer in friction contact with the rotating shaft end, and the inside of the bearing washer provides a rotating shaft holder of the motor in which oil grooves are formed at the facing portion of the rotating shaft end. As a result, the holder of the motor simply supporting the end of the rotating shaft has a simplified structure while securing a supporting force, thereby simplifying the assembly of the motor and reducing the price.

Description

Rotary shaft holder of motor {A SHAFT HOLDER FOR MOTOR}

The present invention relates to a rotating shaft holder of a motor, and more particularly, to support the rotating shaft smoothly without using an oilless bearing in the holder of the rotating shaft used in the small motor, thereby simplifying the process and reducing the cost in manufacturing the small motor. A rotating shaft holder of a motor that can be achieved.

In general, ball bearings have been used in small high-end motors such as VCR motors, FDD motors, and CD-ROM motors, and in some cases, oilless bearings are used to support the rotating shaft for cost reduction.

Oilless bearings have self-lubricating properties, which make them difficult to refuel, high temperature, low temperature, impact loads and vibrations, corrosive atmospheres, foreign substances, chemical contact parts, and continuous operation without stopping the machine. It is a bearing used when a lightweight design is required. By realizing lubrication-free, it is possible to improve the performance of the machine, reduce the cost, and improve the productivity. The application materials and shapes vary according to the use conditions.

On the other hand, the oilless bearing is to improve the self-lubricating properties by adding an additive to include a separate material to the base material as a base, a representative bearing of such oilless bearing is a sintered bearing.

1 is a cross-sectional view of a motor in which a sintered bearing, which is an oilless bearing, is configured.

In FIG. 1, the rotor 30, which is a basic configuration of the motor, is installed inside the first holder 10 and the second holder 20, which define the appearance of the motor, and the rotation shaft 6 is installed on the rotor 30. This is built up.

For the magnetic effect with the rotor 30, the stator 32 is integrally provided with the first holder 10 and the second holder 20 on the outer side of the rotor 30.

The first and second holders 10 and 20 are provided with bearing housings 40 including an oilless bearing 42 therein to support the rotation shaft 6.

The bearing accommodating portion 40 has a space for the rotation shaft 6 to penetrate through the center portion thereof, and an oilless bearing 42 is located at the center thereof, and the oilless bearing 42 is formed in the bearing accommodating portion 40 of the bearing accommodating portion 40. It is fixed by the surface contact and the leaf spring (44).

The conventional oilless bearing 42 configured as described above is supplied with lubricating oil by self-containing and external oil supply to support the rotating shaft 6 of the motor and transmit rotation thereof.

On the other hand, the oilless bearing 42 has a cylindrical or semi-circular shape while pressing the material in the form of powder particles into an arbitrary molding mold to press and compacting, and then sintering as heat to form a shape. It is produced by dipping oil.

The oilless bearing 42 manufactured by the above processing is installed in both the first holder 10 and the second holder 20 of the motor, and the bearing 42 used in the second holder 20 is provided. Is suitably used because it supports the center of the rotation shaft 6, but the bearing 42 used for the first holder 10 supports only the end of the rotation shaft 6, in contrast to this support performance The manufacturing cost of the lease bearing 42 becomes too expensive.

That is, two oilless bearings 42 used in one small motor are installed, which is not suitable as a bearing for simple uniaxial support, which causes a complicated process of the motor, and in particular, increases manufacturing cost.

The present invention has been invented in view of the above problems, and an object of the present invention is to improve a simple support bearing supporting one end of a rotating shaft of a motor, simplifying the bearing structure of using an oilless bearing, and reducing the manufacturing cost of the motor. It is to provide a rotating shaft holder of the motor that can be reduced.

In order to achieve the above object, the present invention, in a housing of a motor including a bearing, to support the center of the rotation shaft of the motor, the first holder forming the housing is provided with an oilless bearing, the end of the rotation shaft of the motor To support, the second holder forming the housing is provided with a depression in the center thereof, a bearing washer is provided in friction with the rotary shaft end, and an oil groove is formed in the bearing washer at the opposite side of the rotary shaft end. It provides a rotating shaft holder of the motor.

The present invention is processed so that the support for the simple shaft end support is formed integrally in the holder in place of the use of the oilless bearing for supporting the end of the rotation shaft in the holder of the motor in which the rotation shaft support of the motor is used oilless bearing is formed It is characterized by simplicity of processing.

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

2 is a cross-sectional view of a motor according to the present invention.

As shown in FIG. 2, in the configuration of the motor according to the present invention, the housing 5 forming the appearance is defined by the first holder 10 and the second holder 20, and the housing 5. Inside the rotor 30, which is a basic configuration of the motor, is installed.

The rotor 30 is rotated by generating an electromagnetic effect mutually with the stator 32 formed integrally with the first holder 10 and the second holder 20, the rotational force generated during the rotation In order to output, the rotating shaft 6 is arranged in the rotor 30.

The rotating shaft 6 is supported by the first holder 10 and the second holder 20 constituting the housing 5, the middle portion of the rotating shaft 6 is supported by the first holder 10. The rotary shaft end 8 is supported by the second holder 20.

In more detail, the bearing holder 40 is formed in the first holder 10 supporting the intermediate portion of the rotation shaft 6, and the bearing housing 40 includes an oilless bearing 42.

The bearing accommodating portion 40 has a space for the rotation shaft 6 to penetrate through the center portion thereof, and an oilless bearing 42 is located at the center thereof, and the oilless bearing 42 is formed in the bearing accommodating portion 40 of the bearing accommodating portion 40. It is fixed by the surface contact and the leaf spring (44).

Thus, the intermediate portion of the rotating shaft 6 is supported by the first holder 10 by being axially supported by the oilless bearing 42 and the bearing accommodation portion 40 configured as described above.

On the other hand, the rotary shaft end 8 is supported in the second holder 20, the center of the second holder 20 forming one side of the housing 5 is recessed in a manner to accommodate the rotary shaft end (8) The part 50 is formed.

In addition, an oil groove 54 is formed in the recess 50 so that lubricating oil may be immersed in the inner circumferential surface thereof so that the rotary shaft end 8 is accommodated so as to be in friction contact when the rotary shaft 6 is rotated.

The second holder 20 can be formed of a resinous material by the configuration of the recess 50, while the second holder 20 is integrally processed to reduce the number of parts while reducing the overall weight of the motor of the present invention.

On the other hand, in the above embodiment, another embodiment that can be added according to the present invention is shown in FIG.

In FIG. 3, the same as the embodiment of FIG. 2, the bearing washer 52 in friction contact with the rotary shaft end 8 is provided inside the recess 50.

The bearing washer 52 has a shape embedded in the depression 50, and is configured to be frictionally contacted when the rotation shaft 6 is rotated while the rotation shaft end 8 is accommodated.

Preferably, the second holder 20 is made of a resin material to reduce the manufacturing cost while reducing the overall weight of the motor according to the present invention, the bearing washer 52 is preferably formed of a material such as molybdenum.

Thus, the bearing washer 52 is formed in the depression 50 so as to be in frictional contact with the rotation shaft end 8, so that the second holder 20 having the depression 50 is supported by the rotation shaft end 8. You can do it.

In addition, an oil groove 54 may be formed inside the bearing washer 50 so as to contain lubricating oil or the like so as to smoothly friction with the rotation shaft end 8.

According to the motor of the present invention configured as described above, when the power is applied to the motor to generate an electromagnetic force between the rotor 30 and the stator 32, the rotor 30 is rotated to generate power.

In order to output the rotational power of the rotor 30 to the outside, the rotating shaft 6 of the rotor 30 is supported by the housing 5 of the motor.

The housing 5 of the rotating shaft 6 is supported by an oilless bearing 42 included in the bearing accommodation portion 40 such that the central portion of the rotating shaft 6 is supported by the first holder 10. .

Thus, the central portion of the rotating shaft 6 is supported and rotated by the first holder 10 in accordance with the shaft support of the oilless bearing 42.

In addition, the rotating shaft end 8 is formed with a recess 50 to be supported by the second holder 20 in accordance with the first embodiment of the present invention, the rotation shaft end 8 is in friction contact with the second holder It is supported by the 20, rotates, oil is immersed in the oil groove 54 formed inside the depression 50 is smoothly frictionally supported.

On the other hand, according to another embodiment of the present invention, the recess 50 has a bearing washer 52, the rotating shaft end 8 is rotated by the friction contact with the bearing washer 52, the second holder It is supported by 20 and rotates.

At this time, the rotary shaft end 8 is rotated in frictional contact with the bearing washer 52, when the oil groove 54 formed inside the bearing washer 52 is filled with oil more smoothly the rotary shaft end (8) ) Will rotate.

As such, the first holder 10 and the second holder 20 for supporting the motor rotation shaft 6 of the present invention are adapted to the respective support positions so that the existing oilless bearing 42 is provided in the first holder 10. ) Is installed to support the central portion of the rotary shaft 6, the second holder 20 is formed with a simplified depression 50 is formed in accordance with the characteristic of supporting only the rotary shaft end 8 to form a bearing washer 52 Sufficient to support the rotary shaft end 8 so that the first holder 10 and the second holder 20 smoothly support the rotary shaft 6 of the motor without affecting the desired rotation of the rotary shaft 6. will be.

By the holder of the rotation shaft of the motor according to the present invention, the holder of the motor that simply supports the end of the rotation shaft has a simplified structure while securing a bearing force, thereby simplifying the assembly of the motor and reducing the price.

1 is a cross-sectional view showing the configuration of a conventional motor.

2 is a cross-sectional view showing the configuration of a motor according to the present invention.

<Description of the symbols for the main parts of the drawings>

5: housing 6: rotating shaft

8: rotary shaft end 10: first holder

20: second holder 30: rotor

32: stator 50: depression

52: bearing washer 54: oil groove

Claims (3)

In a housing (5) of a motor comprising a bearing (42), An oilless bearing 42 is installed in the first holder 10 forming the housing 5 so as to support the center of the rotation shaft 6 of the motor. The holder of the rotation shaft of the motor, characterized in that the depression (50) is formed in the center of the second holder (20) forming the housing (5) to support the friction shaft end (8) of the motor. 2. The rotating shaft holder according to claim 1, wherein an oil groove (54) is formed at an inner side of the bearing washer (52) at the facing portion of the rotating shaft end portion (8). According to claim 1, Inside the depression 50, And a bearing washer (52) to assist the lubricating friction surface between the rotary shaft end (8).