KR0149191B1 - Motor for laser disk play - Google Patents

Abstract

The present invention relates to a laser disk play motor in which a motor shaft is fastened to a center portion of a housing in which a metal bearing is press-fitted; The 0-ring is inserted into the metal bearing and the point side, and the E-ring is inserted into the groove of the motor shaft, and then the top and bottom of the motor shaft are rotated by inserting a washer between the 0-ring and the E-ring. By realizing the laser disk play motor to balance the center of gravity, the motor can be miniaturized and simplified.

Description

Motor for laser disc play

1 is a cross-sectional view showing an embodiment of a conventional laser disk play motor.

2 is a cross-sectional view showing an embodiment of a laser disk play motor according to the present invention.

3 is a cross-sectional view of the main portion A of FIG. 2.

* Explanation of symbols for main parts of the drawings

11: motor shaft 12: metal bearing

13 housing 14 plate

15: rotor 16: bracket

17 screw 18 shaft end

19: thrust bearing 20: shaft

21 clamp 22 disk

30: 0-ring 31: E-ring

32: Washer

The present invention relates to a motor for laser disk play, and more particularly, to machine a groove in a motor shaft to insert a ring and a washer to prevent friction with a metal bearing during rotation of the motor side, and to support an end of the motor side. The present invention relates to a motor for laser disk play that can be miniaturized or simplified by not using a bracket.

In general, a laser disk play motor is operated as a driving source for rotating a disk to read information data compressed and stored in a disk disk, and as the product itself becomes more compact, the motor is also developed into a miniaturized and simplified trend. .

With the configuration of such a motor, FIG. 1 shows a sectional view of a conventional laser disk play motor.

Referring to FIG. 1, a rotor 15 is mounted on a motor shaft 11, and a plate 14 and a housing 13 are press-fitted on the rotor 15. Here, the metal bearing 12 is pressed into the housing 13 to smoothly rotate the motor shaft 11. In addition, a bracket 16 is located at the lower end of the rotor 15 and is fastened with the plate 14 and the screw 17. In this case, a thrust bearing 19 is mounted at the center of the bracket 16 so that the shaft end portion 18 of the motor shaft 11 is supported and rotated. The shaft 20 to be placed is fastened, and the disk 22 is supported by the clamp 21.

In the conventional laser disk play motor according to this configuration, when the motor shaft 11 is rotated by the rotational force of the rotor 15, the disk 22 placed between the shaft 11 and the clamp 21 rotates at a high speed. do. At this time, the shaft end portion 18 of the motor shaft 11 is also rotated by the thrust bearing 19 mounted to the bracket (16).

However, the conventional laser disk play motor configured and operated as described above has a center of gravity of the motor shaft 11 when the motor is driven so that the bracket 16 for covering the size of the motor is mounted. There is a disadvantage that becomes relatively large. In addition, since the thrust bearing 19 mounted at the center of the bracket 16 receives a force in a direction perpendicular to the shaft end 18, the thrust bearing 19 has a disadvantage in that the wear of the thrust bearing 19 is severe.

Therefore, the present invention is to solve the conventional problems as described above, an object of the present invention is to form a groove in the motor shaft to fasten the ring and the washer to simplify and miniaturize the motor itself by a simple structural change The present invention provides a motor for laser disk play.

A laser disk play motor according to the present invention for achieving the above object is characterized in that the motor for the laser disk play motor shaft is fastened to the center of the metal bearing press-fit housing; The 0-ring is inserted into the metal bearing and the contact surface, and the E-ring is inserted into the groove on the motor side, and then the top and bottom of the motor shaft are rotated by inserting a washer between the 0-ring and the E-ring. The point is to balance the center of gravity.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of a laser disk play motor according to the present invention will be described in detail.

2 is a cross-sectional view showing an embodiment of a laser disk play motor according to the present invention, and FIG. 3 is a cross-sectional view of the main portion A of FIG.

First, referring to FIG. 2, a rotor 15 is mounted and rotated at a lower end of the motor shaft 11, and a housing 13 and a press-fit plate 14 are mounted on an upper portion of the rotor 15. In this case, the housing 13 is fastened to the motor shaft 11 by a 0-ring 30. In addition, a metal bearing 12 is mounted in the housing 13. Referring to the enlarged area A shown in FIG. 3 in order to understand the above-described configuration in more detail, the 0-ring 30 is inserted into the metal bearing 12 and the contact surface, and the After the E-ring 31 is inserted into the groove, a pair of washers 32 are inserted between the 0-ring 30 and the E-ring 31. At this time, the 0-ring 30 is used to prevent the damage of the metal bearing 12 when the motor shaft 11 is rotated while receiving a force in the direct direction uses a high strength steel system. In addition, the E-ring 31 serves as a locking projection to prevent the motor shaft 11 from going down. In addition, the washer 32 is used to prevent friction between the 0-ring 30 and the E-ring 31, and uses a plastic series having a small friction coefficient. Therefore, when the motor shaft 11 is rotated by the rotational force of the rotor 15, the disk 22 placed between the shaft 20 and the clamp 21 rotates at a high speed. When the motor shaft 11 rotates, the 0-ring 30 and the E-ring 31 are balanced in the up / down center of gravity so that they do not fall down in the direct direction. Therefore, there is no need for a bracket for supporting the shaft end of the motor as in the prior art, so that the motor size can be reduced by reducing the size of the motor, and the assembly process is performed by fixing or supporting the motor shaft with only the 0-ring and the E-ring. This simplifies.

As described above, according to the laser disk play motor according to the present invention, there is provided a laser disk play motor, in which a motor shaft is fastened to a central portion of a housing in which a metal bearing is press-fitted; 0-ring is inserted into the metal bearing and the contact surface, and an E-ring is inserted into the groove of the motor shaft, and then the upper and lower weights of the motor shaft are rotated by inserting a washer between the 0-ring and the E-ring. By minimizing the center balance, the motor can be miniaturized.

Therefore, the laser disk play motor according to the present invention has the advantage of simplifying and miniaturizing the motor itself by a simple structural change by forming a groove in the motor shaft to fasten the ring and the washer.

In addition, the laser disk play motor according to the present invention has an advantage that the assembly process is simple and the cost can be reduced because the motor shaft is assembled only with the ring and the washer.

Claims (1)

A laser disk play motor, wherein a motor shaft is fastened to a center portion of a metal bearing press-fit housing; The 0-ring is inserted into the contact surface of the metal bearing, the E-ring is inserted into the groove of the motor shaft, and the upper and lower weights of the motor shaft are rotated by inserting a washer between the 0-ring and the E-ring. Motor for laser disc play to achieve a balance in the center.