KR0140000B1 - An auto pressing and inserting device of truntable assemble for an optical machine - Google Patents

Abstract

The present invention relates to an auto-injection apparatus for a turntable for an optical device, which is installed on the bottom surface of the main body 70, and has a space portion 120a open at one side thereof so that the body 40d of the driving motor 40 is detachable. And a motor fixing member 120 having a guide hole 120c penetrating to the bottom of the space part 120a and having a guide hole 120c through which the rotating shaft 40a of the driving motor 40 enters, and the motor fixing member 120 of the motor fixing member 120. A first hydraulic cylinder 100 for pressing the rear protrusion 40b of the driving motor 40 mounted in the space 120a to fix the driving motor 40, and the driving motor 40 mounted thereon. A second hydraulic cylinder (110) for moving the motor fixing member (120) up and down, a pedestal (140) formed on the support member (90) and having a hollow portion (140a) having a circular cross section at the center thereof; A turntable fixing member 170 installed at the hollow part 140a of the pedestal 140 to fix the turntable assembly a, and The limit switch 160 is fastened and fixed to the fastening screw 220 on the pedestal 140 to control the downward movement amount of the motor fixing member 120 as the second hydraulic cylinder 110 moves downward. The automatic press-fit device of the turntable for an optical device, characterized in that the support 150 is configured to accurately minimize the center when the drive motor is pressed into the turntable assembly to minimize the occurrence of errors during disc playback.

Description

Automatic press-fit device of turntable for optical equipment

1 is an exploded perspective view of a typical turntable assembly

2 is a cross-sectional view of a general turntable assembly

3 is a block diagram of an automatic indentation apparatus according to the present invention

4 is a cross-sectional view of main parts of the automatic indentation apparatus according to the present invention

5 is a perspective view of a motor fixing member according to the present invention

* Explanation of symbols for main parts of the drawings

a: turntable assembly 10: fixing member

20: pressing member 30: support chip member

40: drive motor 50: disk

60: Spring 70: The body

80: support member 90: support member

100: the first hydraulic cylinder 110: the second hydraulic cylinder

120: motor fixing member 130: light sensing switch

140: support 150: support stand

160: limit switch 170: turntable fixing member

180: Compression spring 190: Guide pin

200: guide bearing 210: stopper

220: Tightening screw 230: Start button

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turntable for an optical device. In particular, in the press-fitting of the rotating shaft of the spindle motor to the holding member of the turntable assembly, the turntable is reduced by the coupling error of the turntable assembly fixed to the spindle motor by press-fitting using a precision automatic indentation apparatus. The present invention relates to an automatic indentation apparatus of a turntable for an optical device that prevents shaking.

In general, optical devices (e.g., CD, LDP, etc.) mount a disc (DISC) to which various audio signals or video signals are input in the optical device, and rotate the disc by using a turntable, thereby intrinsic to the disc. Is a playback device that allows a user to listen to an audio signal or to view an image signal by playing the data through an optical pickup device.

Looking at the configuration of the turntable assembly (A) in which the disk 50 is inch 1 is an exploded perspective view of a general turntable assembly (A), Figure 2 is a cross-sectional view of the combined state of the turntable assembly (A), the bottom surface of the circular cross section The indentation hole (10a) is formed, the upper surface has a circular body (10c) formed with a groove (10d) in the center is stiff and a fixed member formed with a plurality of inserting holes (10e) in the outer bottom circumference of the circular body (10c) 10) and a plurality of hook hooks 20a fitted to the insertion hole 10e of the fixing member 10 are formed at the bottom thereof, and are inserted into the outer circumferential surface of the circular body 10c to move up and down. 20 and a support member 30 on which the disc 50 is placed, the bending member 30a is formed on the bottom circumference of the fixing member 10 and is bent upwardly, and the fixing member 10 is formed. The bottom of the settling groove (10b) and the pressing member 20 of the bottom of the bottom of the outer The turntable assembly (a) having a spring (60) for providing an elastic force to the mounting member (20) and a rotating shaft (40a) press-fitted into the press-in hole (10a) of the fixing member (10). It consists of a spindle motor 40 to rotate.

In addition, an inserting groove 20b and a settling groove 10b are formed on the bottom surface of the pressing member 20 and the outer bottom surface of the fixing member 10 so that the spring 60 is accurately coupled without flow.

In addition, the support member 30 is a metal material manufactured by preg processing, and the fixing member 10 is a plastic material manufactured by injection molding, and the support member 30 is placed on the outer circumferential surface of the fixing member 10. outsert molding).

In this way, the rotary shaft 40a of the driving motor 40 is forcibly pressed into the fixing member 10 of the turntable assembly (a) and the indentation hole 10a. Such a conventional turntable assembly (a) press-fitting apparatus is driven by a driving motor. A jig for holding the outer circumferential surface of the 40 is set, and a magnetic chuck for electrically holding the support member 30 of the turntable assembly a is mounted on the top.

In this state, the jig and the magnetic chuck are moved up and down to force the rotary shaft 40a of the drive boat 40 fixed thereto to be forcibly pressed into the press hole 10a of the turntable A to be assembled.

However, in the related art, since the outer part of the drive motor 40 is fixed to the jig of the drive motor 40 instead of the precise part of the drive motor 40, the center of the drive motor 40 is not properly grasped and there is an error. Since it can be fixed by using a magnetic chuck, it is impossible to actually press the indentation hole (10a) of the fixing member 10, which is the reference of the vibration of the turntable assembly (A), since the vibration of the turntable assembly (A) is deepened after assembly. There has been a problem that the sound quality reproducibility of the disc is lowered.

The present invention has been made in view of the above, by using a turntable fixing member that accurately grasps the center of the fixing member of the turntable assembly, by mounting the drive coater to the motor fixing member in the state of accurately holding the center of the turntable assembly as a hydraulic cylinder. The purpose is to reduce the eccentric error by moving the motor fixing member downward to press the rotary shaft of the drive motor into the fixing member of the turntable assembly.

This object is a press-fitting device comprising a main body having various devices embedded therein, a supporting member for supporting the main body, and a supporting member for supporting the supporting member on the bottom surface, which is installed at the bottom of the main body, the body of the driving motor A space portion having one side open to be detachably mounted thereon, the bottom of the space portion having a motor fixing member having a guide hole penetrating downwardly and into which a drive motor rotation shaft enters, and a driving motor mounted in the space portion of the motor fixing member. A first hydraulic cylinder for pressing the rear protrusion downward to fix the driving motor, a second hydraulic cylinder for moving the motor fixing member equipped with the driving motor up and down, and a circular shape in the center of the support member. A pedestal having a hollow portion in cross section, a turntable fixing member installed at the hollow portion of the pedestal and fixed to the turntable assembly; Automatic pressing device of the turntable for optical equipment, characterized in that the limit switch for fastening and fixed by a fastening screw on the pedestal and controls the downward movement amount of the motor fixing member as the second hydraulic cylinder is moved downwards Is achieved by providing

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

As shown in Figures 3 to 5, the configuration of the present invention is the main body 70, the various devices are built-in, the support member 80 for supporting the main body 70, and the support member 80 In the press-fitting device consisting of a support member 90 supporting the bottom from the bottom surface, the space portion is installed on the bottom of the main body 70, the one side is open so that the body (40d) of the drive motor 40 is removable ( And a motor fixing member 120 having a guide hole 120c through which a lower portion of the space portion 120a is formed and penetrated downward and the rotary shaft 40a of the driving motor 40 enters the lower surface of the space 120a. A first hydraulic cylinder 100 for pressing the rear projection 40b of the drive motor 40 mounted in the space portion 120a of the 120 downward to fix the drive motor 40, and the drive corner 40. ) Is installed on the second hydraulic cylinder 110 and the support member 90 to move the motor fixing member 120 up and down, A pedestal 140 having a hollow section 140a having a cross section, a turntable fixing member 170 installed at the hollow section 140a of the pedestal 140 to which the turntable assembly A is fixed, and the pedestal 140 The support 150 is fastened and fixed by the fastening screw 220 on the upper side of the upper limit switch 160 to control the downward movement amount of the motor fixing member 120 in accordance with the downward movement of the second hydraulic cylinder (110) It consists of.

In addition, the turntable fixing member 170 has an annular protrusion 170b into which the fixing member 10 of the turntable assembly A is fitted, and a guide slot 170c penetrated up and down in the center thereof. A guide bearing 200 is formed at the outer circumferential portion of the guide slot 170c, and a space portion 170a having a large diameter is formed at the bottom of the guide slot 170c.

In addition, the guide slot (170c) is inserted into the guide pin 190 to move up and down, is in contact with the bottom surface of the guide pin 190 is configured so that the compression spring 180 is installed in the space portion (170a). .

The stopper 210 fixing the turntable fixing member 170 to the bottom of the pedestal 140 is configured to be fastened by the fixing screw 210a.

In addition, an optical sensing switch 130 for detecting a mounting state of the driving motor 40 is installed at the side of the space part 120a of the motor fixing member 120.

In addition, between the space portion 120a of the motor fixing member 120 and the guide hole 120c, a stepped portion 120b in which the front jig portion 40c of the driving motor 40 is mounted is formed.

The operation and effects of the present invention configured as described above will be described in detail.

In order to press-fit the rotating shaft 40a of the drive bolt 40 to the fixing member 10 of the turntable assembly A, the annular protrusion 170b of the turntable fixing member 170 is first moved to the fixing member 10 of the turntable assembly A. ), The center of the turntable assembly (A) is accurately held in the state where the end of the guide pin (190) receiving the elasticity of the compression spring (180) enters the press-in hole (10a) of the fixing member (10). Will be in.

Then, the drive motor 40 is to be installed to enter the inner surface from the side of the motor fixing member 120, the body 40d of the drive motor 40 is installed in the space portion 120a, the rotary shaft 40 Is moved along the guide hole (120c) and the front jig (40c) of the drive motor 40 is in a state fitted to the precise step (120b).

As such, when the start button 230 mounted on the front portion of the main body 70 is pressed while the driving motor 40 is mounted, the light sensing switch 130 shines on the body 40d of the driving motor 40. By sensing the amount of reflection of the driving motor 40 is recognized as being mounted to the motor fixing member 120 while lowering the first hydraulic cylinder 100 by pressing the rear projection 40b of the driving motor 40 to drive A constant pressure is applied so that the front jig part 40c of the motor 40 is precisely jagged to the step 120b.

In addition, while the second hydraulic cylinder 110 is continuously operated, the motor fixing member 120 is operated downward, and the rotary shaft 40a of the driving motor 40 protruding downward is the press-in hole of the fixing member 10. 10a) is forcibly press-fitted and guide pin 190 inserted into the press-fit hole 10a to hold the center of the fixing member 10 is extruded to the bottom while compressing the compression spring 180 and simultaneously driven. The rotating shaft 40a of the motor 40 is completely press-fitted to the holding member 10 of the turntable assembly A in the pressing hole 10a.

As such, while the rotary shaft 40a of the driving motor 40 is completely press-fitted, the bottom surface of the motor fixing member 120 operates the limit switch 160 installed on the support 150 and the lower side of the motor fixing member 120. As the direction movement is stopped at the proper position, the second hydraulic cylinder 110 is returned to its original state.

Then, the first hydraulic cylinder 100 is also raised to its original position, and the drive motor 40 to which the turntable assembly A is press-fitted may be removed from the motor fixing member 120.

On the other hand, if you want to press the other turntable assembly (A) into the drive motor 40 is achieved by continuously repeating the above operation.

In addition, the guide bearing 200 for smoothly inducing the up and down movement of the guide pin 190 is selected to be suitable within a range that does not have much center error among various types of bearings such as lubricated bearings or ball bearings that are commonly used. To use it.

Therefore, unlike the conventional indentation apparatus, the indentation apparatus according to the present invention not only accurately grasps the front jig part 40c of the driving motor 40 which is a relatively precise part, but also the turntable 120b of the motor fixing member 120. The inventor (A) is a very useful inventor to accurately reduce the occurrence of the eccentric error by accurately holding the indentation hole (10a) of the fixing member 10 by the guide pin 190 to move up and down by the compression spring (100) will be.

Claims (6)

In the indentation device consisting of a main body 70, a variety of devices are built, a support member 80 for supporting the main body 70, and a support member 90 for supporting the support member 80 from the bottom surface, It is installed on the bottom of the main body 70, the space portion 120a of which one side is opened to be detachable to form the body 40d of the drive motor 40 is formed, the bottom surface of the space portion 120a is penetrated downward Of the motor fixing member 120 having the guide hole 120c into which the rotating shaft 40a of the driving motor 40 enters, and the drive motor 40 mounted in the space portion 120a of the motor fixing member 120. The first hydraulic cylinder 100 for pressing the rear protrusion 40b downward to fix the driving motor 40 and the motor fixing member 120 on which the driving motor 40 is mounted are moved up and down. 2 a hydraulic cylinder 110, a pedestal 140 installed on the support member 90 and having a hollow section 140a having a circular cross section at the center thereof, and the pedestal 1 The turntable fixing member 170 which is installed at the hollow portion 140a of the 40 and is fixed to the turntable assembly A, and the second hydraulic cylinder 110 is fastened and fixed by the fastening screw 220 on the pedestal 140. Turntable automatic indentation apparatus for an optical device, characterized in that the limit switch 160 for controlling the downward movement amount of the motor fixing member 120 in accordance with the downward movement of the) consisting of a support 150 installed on the upper surface. According to claim 1, The turntable fixing member 170 has an annular protrusion (170b) is formed in the upper portion is fitted to the fixing member 10 of the turntable assembly (A), the guide slot 170c penetrated up and down in the center Is formed, a guide bearing 200 is formed at the outer circumferential portion of the guide slot 170c, and a space portion 170a having a large diameter is formed at the bottom of the guide slot 170c. Automatic press-fit device. According to claim 2, The guide slot 170c is inserted into the guide pin 190 to move up and down, the compression spring 180 in the space portion 170a to be in contact with the bottom surface of the guide pin 190 Turntable auto-injection apparatus for optics, characterized in that configured to be installed. The apparatus of claim 1, wherein a stopper (210) fixing the turntable fixing member (170) to the bottom of the pedestal (140) is configured to be fastened by a fixing screw (210a). According to claim 1, wherein the optical sensor switch 130 for detecting the mounting state of the drive motor 40 is installed on the space portion (120a) side of the motor fixing member 120 of the turntable for optical equipment Automatic indentation device. According to claim 1, Between the space portion (120a) and the guide hole (120c) of the motor fixing member 120 characterized in that the stepped portion (120b) on which the front jig portion 40c of the drive motor 40 is mounted is formed. Automatic press-fitting device for turntables for optical equipment.