KR200314803Y1 - Motor built-in type turntable for disk player - Google Patents

Abstract

Disclosed is a turntable for a disc player that improves flatness and performance by combining a table supporting a disc with a rotor of a motor and a racer incorporating an eccentricity correction ball.

The table 100 of the turntable includes a ring-shaped side portion 102 and a disk-shaped first flat portion 104 and a first plate portion formed in a horizontal direction orthogonal to the upper surface of the rotor 250. It has an annular projection 106 projecting upward in the central region of the planar portion 104 and fitted into the central hole 162 of the disk 160. The racer 110 has an annular racing hole 112 therein and is fixed to the inner side of the side portion 102 and the bottom of the first flat portion 104 and the bottom thereof is fixed to the upper surface of the rotor 250. The ball 120 is embedded in the racing hole 112.

The turntable combines the table 100 supporting the disk 160 and the racer 110 incorporating the eccentric correction ball 120 in the rotor 250 of the motor, thereby improving flatness and performance.

Description

Motor integrated turntable for disc player {MOTOR BUILT-IN TYPE TURNTABLE FOR DISK PLAYER}

The present invention relates to a turntable for a disc player, and more particularly, to a turntable for a disc player having improved flatness and performance by combining a table supporting a disc with a rotor of a motor and a racer having an eccentric correction ball.

BACKGROUND ART Motor integrated turntables in which a turntable is formed directly on the rotor of the motor are known.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a sectional view of a turntable described in Utility Model Registration Application No. 1997-003153 (designated name: turntable device of a spindle motor for a disk drive), and Fig. 2 is a perspective view of the turntable shown in Fig. 1.

The spindle motor shown in this figure is separated into the stator 1 and the rotor 2. The stator 1 is provided with a rotating shaft 3 which is rotatably supported by a bearing 3a inside the hollow housing 4 placed in the upper center of the substrate 1a. The coil 5a is provided on the outer circumferential surface of the housing 4. A core 5 wound around) is provided. In addition, the rotor 2 is coupled to the upper end of the rotary shaft 3 is provided with a turntable 6 is rotated, the bottom surface of the turntable 6 is provided with a case 5a surrounding the core (5). In addition, the inner circumferential surface of the case 7a is provided with a magnet 7 for generating an electromagnetic force when power is applied to the coil 5a.

The rotary shaft 3 is coupled to the inside of the housing 4 placed in the upper center of the substrate 1a, and the turntable 6 constituting the rotor 2 is coupled to the upper end of the rotary shaft 3. At this time, the turntable 6 is provided with a bearing portion 6a coupled to the upper end of the rotating shaft 3, and a disk receiving portion 6b on which the disk 8 is placed on the outer circumferential surface of the bearing portion 6a. The disc receiving portion 6b is formed lower than the bearing portion 6a, and the disc receiving portion 6b is provided with a supporting means 9 which is rotated and supported after the disc 8 is placed in a horizontal state.

At this time, the support means 9 has a ring-shaped edge 12 protruding from the upper part of the disk receiving part 6b by preventing direct contact with the surfaces of the disk 8 and the disk receiving part 6b. In addition, the rim 12 is coupled to the friction material 13 on the upper surface is prevented from sliding during the rotation of the disk (8).

When the disc 8 is placed on top of the disc receiving portion 6b, the edge 12 slightly separates the disc between the disc 8 and the disc receiving portion 6b. Therefore, even if the flatness of the disk receiving part 6b is not precise, the disk 8 is placed in a horizontal state with respect to the turntable 6.

By the way, since the bearing part 6a and the disk receiving part 6b are integrally formed in such a conventional turntable 6, when the metal plate is processed by a press, the edge 13 is easy to generate | occur | produce. Therefore, the conventional turntable 6 has a problem of high incidence of defective products.

The present invention has been devised in view of the above, an object of the present invention is to improve the flatness and performance by combining a table supporting the disk and a racer with an eccentricity correction ball in the rotor of the motor.

1 is an exploded perspective view of a conventional turntable.

2 is a cross-sectional view of the turntable shown in FIG.

3 is an exploded perspective view of a turntable according to an embodiment of the present invention.

4 is a cross-sectional view of the combination of the turntable shown in FIG.

<Explanation of symbols for main parts of drawing>

100: table 102: ball

104: first plane portion 106: protrusion

108: version 110: racer

112: racing hole 114: second plane portion

116: coupling hole 120: ball

130: magnet 200: substrate

210: housing 212: bearing

220: shaft 230: core

232: coil 240: driving magnet

250: rotor 250: holder

The present invention for achieving the above object, the ring-shaped side portion that is placed on the upper surface of the rotor, the first flat portion of the disk-shaped formed in a horizontal direction orthogonal from the side portion, and in the central region of the first flat portion A table having an annular protrusion projecting upwardly and fitted into a center hole of the disc; A racer having an annular racing hole therein and fixed to an inner side of the side portion and a bottom of the first flat portion, and a bottom thereof fixed to an upper surface of the rotor; And a plurality of balls embedded in the racing hole.

Hereinafter, a preferred embodiment of the present invention as described above.

3 is an exploded perspective view of a turntable according to the present embodiment, and FIG. 4 is a cross-sectional view of the turntable shown in FIG. 3.

The motor of this embodiment includes a housing 210 fixed to the substrate 200; A core 230 fixed to an outer circumferential surface of the housing 210 and having a coil 232 wound thereon; A shaft 220 supported by a bearing 212 fixed inside the housing 210; A rotor 120 in which a holder 124 to which the shaft 220 is coupled is formed at the center thereof; The driving magnet 240 is radially spaced apart from the core 230 and fixed to the bottom of the rotor 120.

The turntable coupled to the motor includes a ring-shaped side portion 102 mounted on the upper surface of the rotor 250, a first flat portion 104 having a disk shape formed in a horizontal direction orthogonal to the side portion 102, and A table (100) having an annular protrusion (106) projecting upward from the central region of the one flat portion (104) and fitted into the center hole (162) of the disc (160); A racer (110) having an annular racing hole (112) therein, fixed to an inner side of the side portion (102) and a bottom of the first flat portion (104), and having a bottom fixed to an upper surface of the rotor (250); And a plurality of balls 120 embedded in the racing hole 112.

The table 100 is manufactured by pressing a steel plate. The first planar portion 104 preferably increases the flatness and increases the thickness thereof.

In addition, an annular rubber 110 made of rubber material is bonded to the first flat portion 104 to provide a flat surface to the disk 160 and to increase friction with the disk 160.

An annular magnet 130 is fixed to the bottom of the protrusion 106. This magnet 130 is for grasping the disk 160 stably by pulling the clamper which pushes upward of the disk 160 by magnetic force.

In order to couple the table 100 and the racer 110, a burr 108 is formed to protrude downward from the first plane portion 104, and the racer 110 corresponds to the first plane portion 104. A second flat portion 114 is formed, and a coupling hole 116 is formed to which the burr 108 is coupled to the second flat portion 114. This bur 108 is passed through the coupling hole 116 and then caulked (caulking) to combine. In addition, the racer 110 may apply an adhesive to the side surface, the second flat portion 114 and the bottom, and fix the adhesive to the top surface of the side portion 102, the first flat portion 104, and the rotor 250 of the table 100. do.

Hereinafter, the operation of the turntable having the above configuration will be described.

When such a motor-integrated turntable is mounted on the disc player and the disc 160 is placed on the table 100, the protrusion 106 is inserted into the center hole 162 of the disc 160. The rubber 110 adhered to the table 110 supports the bottom surface of the disk 160.

On the other hand, when power is applied to the coil 232, the rotor 250 is rotated about the shaft 220 as it rotates by the rotational force generated between the coil 232 and the driving magnet 240.

In this state, the clamper positioned above the disk 160 is lowered to press the disk 160 toward the table 100, and the magnet 130 fixed to the protrusion 106 pulls the clamper toward the rotor 250. The setting state of the disc 160 is stabilized.

The ball 120 embedded in the racing hole 112 of the racer 110 moves to a position to compensate for the eccentric mass of the disk 160 to reduce vibration caused by the eccentricity generated in the disk 160.

As described above, the present invention has a disk-shaped first flat portion 104 and a first disk portion formed in a horizontal direction orthogonal from the ring-shaped side portion 102 and the side portion 102 which are placed on the upper surface of the rotor 250. A table 100 having an annular protrusion 106 projecting upward from the central region of the flat portion 104 and fitted into the center hole 162 of the disc 160, and an annular racing hole 112 therein. And a racer 110 fixed to an inner side of the side portion 102 and a bottom of the first flat portion 104 and fixed to an upper surface of the rotor 250, and a plurality of balls embedded in the racing hole 112 ( A motor-integrated turntable for a disc player comprising a 120, which is flattened by combining the rotor 100 of the motor with the table 100 supporting the disc 160 and the racer 110 incorporating the eccentric correction ball 120. There is an effect that the degree and performance is improved.

Although the present invention has been described as an embodiment, the present invention is not limited to the above-described embodiment, and the general knowledge in the field to which the present invention belongs without departing from the gist of the present invention claimed in the utility model registration claims. Anyone with a variety of variations will be possible.

Claims (5)

A ring-shaped side portion 102 mounted on the upper surface of the rotor 250, a disk-shaped first flat portion 104 formed in a horizontal direction orthogonal to the side surface 102, and the first flat portion 104. A table (100) having an annular protrusion (106) projecting upward in a central region of the disc and fitted into a central hole (162) of the disc (160); A racer 110 having an annular racing hole 112 therein, which is fixed to an inner side of the side portion 102 and a bottom of the first flat portion 104, and a bottom thereof is fixed to an upper surface of the rotor 250. ); And Disc-shaped motor integrated turntable comprising a; a plurality of balls (120) embedded in the racing hole (112). 2. The turntable motor-integrated turntable for a disc player according to claim 1, wherein an annular rubber (110) is adhered on the first flat portion (104). The turntable of claim 1, wherein an annular magnet (130) is fixed to the bottom of the protrusion (106). The method of claim 1, wherein the first flat portion 104 is formed with a burr 108 protruding downward, The racer 110 has a second flat portion 114 corresponding to the first flat portion 104, the coupling hole 116 is coupled to the burr 108 to the second flat portion 114. Is formed, The burr 108 is a motor-integrated turntable for a disc player, characterized in that coupled by caulking after passing through the coupling hole (116). 2. The motor integrated motor of claim 1, wherein the racer 110 is adhesively fixed to an upper surface of the side part 102, the first flat part 104, and the rotor 250. turntable.