KR20080104749A - Disk chucking apparatus and disk drive having thereof - Google Patents

Abstract

A disc chucking apparatus and a disk drive including the same are provided to align the center of a disc and the center of the chuck base easily. A disc chucking apparatus comprises a chuck base(142) having a plurality of receiving portions(166), a plurality of chuck pins(150) which are inserted into the receiving portions and can be protruded from the chuck base, and a plurality of elastic members(180) providing the elastic force to the chuck pin in the protruding direction of the chuck pin.

Description

DISK CHUCKING APPARATUS AND DISK DRIVE HAVING THEREOF}

1 is a cross-sectional view of a disk drive according to one embodiment of the present invention.

2 is a plan view of a disk chucking apparatus according to an embodiment of the present invention.

3 is a cross-sectional view of the disk chucking device taken along the line AA ′ of FIG. 2.

Figure 4 is a plan view showing a state in which the chuck pin protrudes to the outside in the disk chucking apparatus according to an embodiment of the present invention.

5 is a plan view showing a state in which the chuck pin is inserted into the disk chucking apparatus according to an embodiment of the present invention.

6A is a perspective view of a chuck pin according to an embodiment of the present invention.

Figure 6b is a side view of the chuck pin in accordance with an embodiment of the present invention.

7 is an exploded diagram of the force applied to the chuck pin in the disk chucking apparatus according to an embodiment of the present invention.

8 is a plan view of a disk chucking apparatus according to another embodiment of the present invention.

9 is a plan view of a conventional disk chucking device.

<Description of Drawing>

100: disk drive 110: motor

112: frame 114: bush

116: sleeve 118: shaft

122: rotor holder 124: closing plate

126: magnet 128: coil

140: disc chucking device 142: chuck base

144: turntable 146: center hall

148: elastic piece 150: chuck pin

152: contact portion 158: body portion

162: fixing protrusion 180: elastic member

The present invention relates to a disk chucking device and a disk drive having the same.

Generally, a disk drive includes a deck base constituting a main body, means for loading or unloading a disk into the deck base, and a disk loaded by the disk loading and unloading means. Means for rotating at a speed of and means for recording and / or reproducing information on the recording surface of the disk while transporting at a radius of the disk rotated by the rotating means. Here, the disk may be loaded and unloaded by being mounted in a tray, and various types of disk drives are known, such as being accommodated in a caddy or a cartridge, which may be inserted into or taken out of the deck base.

A spindle motor is employed as the means for rotating the disk, and a pick-up unit is commonly used as a means for recording and / or reproducing information on the disk recording surface. In addition, the deck base is provided with a disk chucking device for fixing the disk and the disk is inserted into the chuck base is fixed by a chuck pin or the like.

An important requirement for such a disk drive is whether or not the center of the disk mounted on the chuck base coincides with the center of the chuck base. When the centers of the chuck base and the disc do not coincide with each other, the high speed rotation of the disc may increase the deviation between the centers and cause various vibrations and noises. If the centers of the chuck base and the disc do not coincide with each other, there is a problem in that information cannot be accurately recorded and reproduced by the pickup unit.

However, as shown in FIG. 9, in the conventional disk chucking device 300, since one elastic member 340 elastically presses only one chuck pin 320, an elastic modulus between the elastic members 340 is provided. Is reflected as it is, the deviation between the force acting on the chuck pin 320 is bound to occur.

The present invention provides a disk chucking device capable of easily matching the center of a disk and the center of a chuck base, and a disk drive having the same.

The present invention provides a disk chucking device with improved durability and a disk drive having the same.

Disc chucking device according to an aspect of the present invention, a chuck base having a plurality of receiving portion, a plurality of chuck pins which are inserted into the receiving portion to protrude out of the chuck base, and providing an elastic force to the chuck pin in the protruding direction of the chuck pin It includes a plurality of elastic members,

Each elastic member elastically supports a pair of chuck pins adjacent to each other simultaneously.

Disc chucking device according to another aspect of the present invention, the chuck base having a plurality of receiving portion, a plurality of chuck pins that can be inserted into the receiving portion protruding out of the chuck base, and providing elastic force to the chuck pin in the direction of the chuck pin It includes a plurality of elastic members, each chuck pin is elastically supported at the same time by a pair of elastic members adjacent to each other.

Embodiments of the disk chucking apparatus according to the present invention may have one or more of the following features. For example, the chuck pin may be provided with a contact portion protruding to the outside of the housing portion and contacting the disk, and a body portion contacting the elastic member.

The contact portion may have an upper inclined portion and a lower inclined portion formed in conjunction with the upper inclined portion, and the body portion may have a pair of fixing protrusions protruding in a direction opposite to the contact portion. End portions of the elastic members are fixed to the fixing protrusions, respectively.

The chuck base has a center boss and an outer circumferential surface formed with a center hole, which is a rotation center of the disk chucking device, and a bent portion formed adjacent to the center boss, and the elastic member may be inserted into a groove defined by the outer circumferential surface and the bent portion. The accommodating parts may be formed at equal intervals around the center hole.

The chuck base has a center hole into which the shaft is inserted, and an elastic piece may be formed at a position symmetrical with the receiving part about the center hole. The elastic piece may include a bending part having an elastic force. And the base has a turntable, the turntable may be formed with a cushion member in contact with the disk.

The receiving groove and the chuck pin inserted into the receiving groove may be formed with a 120 ° interval, the elastic member may be a helical compression spring.

Disc drive according to an aspect of the present invention, a disk drive including a disk chucking device and a motor for providing a rotational force to the disk chucking device, the disk chucking device has a plurality of housings, the chuck receives a rotational force by the motor A base, a chuck pin inserted into the housing and protruding out of the chuck base, and an elastic member providing elastic force to the chuck pin in the protruding direction of the chuck pin, each elastic member simultaneously having a pair of adjacent chuck pins. Support elastically.

Disc drive according to another aspect of the present invention, a disk drive including a disk chucking device and a motor for providing a rotational force to the disk chucking device, the disk chucking device, the chuck is provided with a rotational force by a motor having a plurality of housings And a base, an chuck pin inserted into the housing and protruding out of the chuck base, and an elastic member providing elastic force to the chuck pin in the protruding direction of the chuck pin, wherein each chuck pin has a pair of elastic adjacent to each other. Pressurized simultaneously by the member.

Hereinafter, an embodiment of a disk chucking apparatus and a disk drive having the same according to the present invention will be described in detail with reference to the accompanying drawings. In the following description with reference to the accompanying drawings, the same or corresponding components have the same reference numerals. And duplicate description thereof will be omitted.

1 is a cross-sectional view illustrating a disk drive 100 according to an embodiment of the present invention.

Referring to FIG. 1, a disk drive 100 according to an embodiment of the present invention applies rotational force to a disk chucking apparatus 140 and a disk chucking apparatus 140 to which a disk D is inserted and fixed. It includes a motor 100 to provide. The disk D fixed by the disk chucking device 140 is rotated at a constant speed by the motor 100, so that the pickup device (not shown) plays back the information recorded on the disk or writes the information to the disk. You can record.

The motor 100 is to provide a constant rotational force to the disk chucking device 140, largely coupled to the disk chucking device 140 to be divided into a rotor (rotator) and a rotational force to provide a rotor to the stator (stator) Can be.

The stator includes a bush 114 fixed to the frame 112 and a coil 128 fixed to an outer circumferential surface of the bush 114. In addition, a sleeve 116 is provided inside the bush 114 to support the shaft 118 and smoothly rotate the shaft 118.

The bush 114 inserted into the hole 112a of the frame 112 has a fixing protrusion 114a at one end thereof. The fixing protrusion is inserted into the hole 112a of the frame 112 and then bent to allow the bush 114 to be fixed to the frame 112. A coil 128 is provided on an outer circumferential surface of the bush 114, and a current is input to the coil 128 to form an electric field. The coil 128 is disposed adjacent to the magnet 126 fixed to the rotor holder 122.

And the closing plate 124 is inserted and fixed in the center of the bush (114). The closing plate 124 supports one end of the shaft 118 while preventing foreign matter from flowing into the bush 114.

The rotor is inserted into the shaft 118 supported by the sleeve 116, the rotor holder 122 supporting the disk chucking device 140 and the magnet fixed to the inner circumferential surface of the rotor holder 122. 126).

The shaft 118 rotates together with the rotor holder 122 and serves to transmit rotational force to the disk chucking device 140. One end of the shaft 118 is supported by the closing plate 124, and the other end is inserted into the center hole 146 of the chuck base 142.

The rotor holder 122 is inserted into the shaft 118 to rotate together with the shaft 118 and the disk chucking device 140, and has a circular cross section. And the rotor holder 122 is open downward, the cover portion 122a in contact with the disk chucking device 140, the circumferential portion 122b extending along the circumference of the cover portion 122a and the disk chucking device 140 It has an insertion part 122c inserted into the center hole 146.

The cover portion 122a has a disc shape and its upper surface is in contact with the disk chucking device 140. The circumferential portion 122b surrounds the periphery of the coil 128 and the magnet 126 is fixed to the inner circumferential surface thereof. The electromagnetic force is generated by the interaction of the magnetic field formed by the magnet 126 and the electric field formed by the coil 126, and the rotor and disk chucking device 140 is rotated by the electromagnetic force.

The shaft 118 is inserted into the insertion part 122c protruding upward from the cover part 122a. The center hole 146 of the disk chucking device 140 is inserted and fixed to the outside of the insertion part 122c. Accordingly, the rotational force of the shaft 118 is transmitted to each of the rotor holder 122 and the disk chucking device 140.

1 illustrates a spindle motor as a device for providing a driving force to the disk chucking device 140, the present invention is not limited thereto, but various forms such as a brushless direct motor (BLDC motor) and the like. Of course, the driving device can be used.

Hereinafter, the disk chucking device 140 according to an embodiment of the present invention will be described with reference to FIGS. 2 to 5.

2 is a cross-sectional view of the disk chucking device 140 according to an embodiment of the present invention, Figure 3 is a cross-sectional view taken along the line AA 'of FIG. For reference, FIG. 3 illustrates a state in which the chuck pin 150 protrudes to the outside of the chuck base 142. 4 and 5 are plan views of the disk chucking device 140 according to an embodiment of the present invention.

The disk chucking device 140 rotates at a constant speed while being provided with a rotational force by the insertion portion 122c of the rotor holder 122 inserted into the center hole 146 formed at the center thereof. The disk chucking device 140 is inserted into the chuck base 142 into which the insertion part 122c is inserted, the turntable 144 formed on the rear surface of the chuck base 142, the chuck base 142, and the chuck base 142. It includes a chuck pin 150 that can protrude to the outside of the elastic member 180 to elastically support the chuck pin 150 in the protruding direction.

The chuck base 142 has a circular shape as a whole (see FIGS. 4 and 5) and a center hole 146 is formed at the center thereof. The outer circumferential surface of the insertion portion 122c of the rotor holder 122 is inserted into the center hole 146. The chuck base 142 is formed at regular intervals along the circumference of the center hole 146, the receiving portion 166 is inserted into the chuck pin 150. The center hole 146 is formed at the center of the center boss 168, and the bent portion 174 is formed adjacent to the center boss 168.

The chuck pin 150 is inserted into the accommodation portion 166 to protrude outward. The chuck pin 150 positioned inside the accommodating part 166 protrudes to the outside by the elastic force of the elastic member 180, and retracts into the accommodating part 166 when the disc (see FIG. 1D) is inserted. The inner peripheral surface of the disk D is pressed.

The turntable 144 is formed under the chuck base 142 to support the lower surface of the disk D, and a part of the turntable 144 is formed with a cushion member 164. The cushion member 164 is formed of rubber or the like to support the disk D at a constant height.

An elastic piece 148 is formed at a position symmetrical with the chuck pin 150 around the center hole 146. Since the elastic piece 148 is slightly larger than the overall diameter of the chuck base 142, when the disk is inserted, the bending portion 148a of the elastic piece 148 is slightly bent to provide elastic force to the disk. In FIGS. 4 and 5, the elastic piece 148 is formed at an angle of about 120 degrees with respect to the center hole 146, but the present invention is not limited thereto.

The center boss 168 is formed to protrude upward from the center of the chuck base 142, and the insertion portion 122c of the rotor holder 122 is inserted into and fixed to the center hole 146 formed at the center thereof. The outer circumferential surface 172 of the center boss 168 is formed adjacent to the bent portion 174. An elastic member 180 is inserted into the groove (see FIG. 3) formed by the outer circumferential surface 172 and the bent portion 174 of the center boss 168.

The chuck pin 150 may be inserted into the receiving part 166 to protrude to the outside by the elastic force of the elastic member 180, and the contact part 152 may press the inner circumferential surface of the disk D as illustrated in FIG. 3. do. As illustrated in FIGS. 4 and 5, three chuck pins 150 may be disposed at an angle of 120 degrees with respect to the center hole 146. In this case, three chuck pins 150 inserted into the accommodating part 166 and the accommodating part 166 may be disposed at intervals of 120 degrees. Therefore, the chuck pin 150 and the elastic member 180 that elastically supports the chuck pin 150 have an arrangement structure of an equilateral triangle as a whole.

The disk chucking device 140 according to the present embodiment shows three elastic members 180 and the chuck pins 150, but the present invention is not limited thereto and various numbers of chuck pins 150 may be provided according to design conditions. Of course. For example, four, five or six chuck pins may be arranged at regular intervals.

One chuck pin 150 is simultaneously pressed by a pair of adjacent elastic members 180. For example, the chuck pins 150a are simultaneously pressed by a pair of adjacent elastic members 180a and 180b. The chuck pins 150b are simultaneously pressed by a pair of adjacent elastic members 180b and 180c. Thus, since each chuck pin (150a, 150b, 150c) is simultaneously pressed by a pair of adjacent elastic members (180a, 180b, 180c), even if there is a variation in the elastic modulus between the elastic members to some extent the deviation It can be offset.

The direction in which the elastic member 180 presses the chuck pin 150 is the same as the protruding direction of the chuck pin 150. This is because the elastic member 180 is bent and positioned as shown in FIGS. 4 to 5. As described above, the elastic member 180 is inserted into a groove formed by the outer circumferential surface of the center boss 168 and the bent portion 174. And both ends of the elastic member 180 is fixed to the fixing projections 162 formed on the rear surface of the chuck pin 150.

Both ends of the elastic member 180 simultaneously press the adjacent chuck pins 150 while contacting the chuck pins 150 with each other. For example, the elastic member 180a presses the pair of chuck pins 150a and 150c and the elastic member 180b presses the pair of chuck pins 150a and 150b simultaneously. The elastic members 180 all use the same elastic modulus, but a certain deviation occurs in the manufacturing process. Due to such a variation in the elastic modulus, the center of the disk and the center of the chuck base 142 do not coincide. However, the disk chucking device 140 according to the present embodiment simultaneously presses a pair of chuck pins 150 adjacent to one elastic member 180 and a pair of elastic members 180 adjacent to one chuck pin 150. The force by) acts at the same time. Therefore, since the elastic members 180 are linked to each other through the chuck pins, the variation in the elastic modulus of the elastic members 180 may be dispersed and may have a self adjustability as a whole.

And since the elastic member 180 provides an elastic force to the chuck pin 150 in the protruding direction of the chuck pin 150, the elastic force by the elastic member 180 can be efficiently transmitted to the chuck pin 150. In addition, an elastic force by a pair of adjacent elastic members 180 is applied to one chuck pin 150. Therefore, the disk chucking device 140 according to the present embodiment may provide an elastic force of a predetermined value or more even if the elastic coefficient of the elastic member 180 is not large, thereby improving the reliability of the disk chucking device 140.

Although the helical type compression spring is illustrated as an example of the elastic member 180 in the present embodiment, the elastic member is not limited thereto and may be implemented by various materials such as elastic rubber.

6A is a perspective view of the chuck pin 150 according to an embodiment of the present invention, and FIG. 6B is a side view of the chuck pin 150.

6A and 6B, the chuck pin 150 according to an embodiment of the present invention has a contact portion 152 whose front end contacts a disk and a body portion 158 whose back surface is pressed by an elastic member 180. Has

When the disc is not inserted into the chuck pin 150 pressed by the elastic member 180, as shown in FIG. 3, the tip of the contact portion 152 protrudes to the outside. When the disc is inserted, the tip of the contact portion 152 is retracted and inserted into the housing 166. The contact 152 has an upper slope 154 and a lower slope 156. The upper inclined portion 154 is formed to facilitate the insertion of the disk, the inner circumferential surface of the dike retracts the chuck pin 150 while moving along the upper inclined portion 154. The lower inclined portion 156 is formed to facilitate the detachment of the disk, and the inner circumferential surface of the disk retreats the chuck pin 150 while moving along the lower inclined portion 156.

The body 158 is guided by the housing 166, and a fixing protrusion 162 is formed on the rear surface thereof. The fixing protrusions 162 formed on the body portion 158 are formed in a pair so as to be symmetrical about the moving direction of the chuck pin 150. Both ends of the elastic member 180 are fixed to the fixing protrusion 162.

7 is an exploded diagram illustrating a force applied to the chuck pin 150 in the disk chucking device 140 according to an embodiment of the present invention. Each force described below is a vector amount.

Referring to FIG. 7, the forces acting on the disk by the chuck pins 150 are different as C1, C2 and C3, respectively. The force C1 may be decomposed into a force Eb applied by the elastic member 180b and a force Ec applied by the elastic member 180c. Similarly, the force C2 can be decomposed into the force Ea applied by the elastic member 180a and the force Ec applied by the elastic member 180c, and the force C3 is the force Ea and elastic member ( 180b) to Eb. And the direction of the force Cn (n = 1, 2, 3) and the force Ea, Eb, Ec by an elastic member is the same.

As described above, the elastic members (180a, 180b and 180c) are all manufactured to have the same elastic member, but a certain error occurs in the manufacturing process. If the modulus of elasticity has an error of 20% each, for example, Ea = 0.6N (mean), Eb = 0.48N (-20%) and Ec = 0.72N (+ 20%), C1, C2 and C3 Is shown below.

C1 = Eb + Ec = 0.48 + 0.72 = 1.2 N

C2 = Ea + Ec = 0.6 + 0.72 = 1.32 N

C3 = Ea + Eb = 0.6 + 0.48 = 1.08 N

As can be seen in the above equations, when the error of the elastic modulus is 20%, the maximum error of the forces (C1, C2 and C3) of the chuck pin 150 is 1.32-1.08 = 0.24N.

If, as shown in FIG. 9, one elastic member 340 presses only one chuck pin 320 and the elastic modulus error of the elastic member 320 is 20% as described above. For example, the modulus of elasticity of the elastic member 340a is 1.0N (-20%), the modulus of elasticity of the elastic member 340b is 1.2N (average), and the modulus of elasticity of the elastic modulus 340c is 1.4N ( + 20%), the deviation of the force of the elastic member applied to the chuck pin is transmitted as it is not canceled because the force acting by the chuck pin is 1.0N for the chuck pin 320a, 1.2N for the chuck pin 320b and In the case of the chuck pin (320c) is 1.4N. Therefore, the maximum error of the force acting on the chuck pin is 1.4-1.0 = 0.4N.

As can be seen above, in the disk chucking device 140 according to the present embodiment, each chuck pin 150 is connected by the elastic member 180, one chuck pin 150 is a pair of adjacent Since it is pressed by the elastic member 180, the elastic member 180 may cancel the deviation of the elastic force. Therefore, when the error of the elastic modulus is the same, the maximum error of the force acting on the chuck pin is 0.24N, which is smaller than that of one elastic member pressing only one chuck pin (0.4N). Therefore, the disk chucking device 140 according to the present embodiment can easily match the center of the disk and its center.

In addition, since the disc chucking apparatus 140 according to the present embodiment has all adjacent chuck pins connected by elastic members, the elastic modulus of the elastic members varies until the final forces acting by the chuck pins are all the same. May be offset. Of course, this is affected by the friction or surface properties depending on the position of the chuck pins.

And when the elastic modulus is 0.6N, 0.48N and 0.72N, the force acting on the chuck pin is 1.2N, 1.32N and 1.08N, so the elastic modulus is similar to that of 1.0N, 1.2N and 1.4N respectively. have. This is because the elastic member 180 presses the chuck pin 150 in the protruding direction, and at the same time, a pair of adjacent elastic members 180 is simultaneously pressed against one chuck pin 150. Therefore, the disk chucking device 140 according to the present embodiment can obtain a large force by the elastic member having a small modulus of elasticity and can reduce the modulus of elasticity of the elastic member, thereby improving the operation reliability of the spring. In addition, the durability of the disk chucking device can be improved.

Hereinafter, a disk chucking device 140 ′ according to another embodiment of the present invention will be described with reference to FIG. 8.

Referring to FIG. 8, in the disc chucking device 140 ′ according to another embodiment of the present invention, the inclined portion 164 is formed on the body portion 158 of the chuck pin 150, and the center boss 168 is 6. Except for having two outer circumferential surfaces 176, the configuration has the same configuration as the above-described embodiment. Therefore, the following description will focus on the differences in construction.

An inclined portion 164 having an inclination angle is formed on the rear surface of the body portion 158 of the chuck pin 150 in a symmetrical direction. Each inclined portion 164 is symmetrical with respect to the centerline of the chuck pin 150 and may be formed at a predetermined inclination angle, for example, an inclination angle of about 5 ° to 10 °. Of course, the inclination angle can be changed within a range in which the elastic member 180 can press the chuck pin 150 in the protruding direction thereof. Therefore, the disk chucking device 140 ′ according to the present embodiment may facilitate the coupling of the elastic member 180 and the chuck pin 150 while the elastic member 180 presses the chuck pin 150 in the protruding direction thereof. The elastic member 180 can be made to operate more smoothly. In addition, the inclined portion 164 is provided with a fixing protrusion 162 is coupled to the elastic member 180. One end of the elastic member 180 is fixed to the fixing protrusion 162.

The center boss 168 is formed in a hexagonal shape and has six outer circumferential surfaces 176. By forming the center boss 168 in a hexagonal shape, it is possible not only to secure a space in which the elastic member 180 can operate together with the bent portion 174, but also to increase the width in which the chuck pin 150 can move. Will be.

Although the embodiments of the present invention have been described above, various changes and modifications of the present invention should also be construed as falling within the scope of the present invention as long as the technical idea of the present invention is implemented.

The present invention can provide a disk chucking device that can easily match the center of the disk and the center of the chuck base and a disk drive having the same.

The present invention can provide a disk chucking device with improved durability and a disk drive having the same.

Claims (32)

A chuck base having a plurality of housing portions; A plurality of chuck pins inserted into the receiving part and protruding out of the chuck base; And a plurality of elastic members providing elastic force to the chuck pins in the protruding direction of the chuck pins. Each of the elastic member is a disk chucking device for elastically supporting the pair of chuck pins adjacent to each other at the same time. A chuck base having a plurality of housing portions; A plurality of chuck pins inserted into the receiving part and protruding out of the chuck base; And a plurality of elastic members providing elastic force to the chuck pins in the protruding direction of the chuck pins. And each of the chuck pins is elastically supported simultaneously by a pair of adjacent elastic members. The method according to any one of claims 1 to 2, The chuck pin is a disk chucking device, characterized in that provided with a contact portion protruding to the outside of the housing portion in contact with the disk, and a body portion in contact with the elastic member. The method of claim 3, And the contact portion has an upper inclined portion and a lower inclined portion connected to the upper inclined portion. The method of claim 3, The body portion is provided with a pair of fixing projections protruding in the opposite direction to the contact portion, the end of the elastic member is fixed to the fixing projections, characterized in that the disk chucking device. The method according to any one of claims 1 to 2, The chuck base includes a center boss and an outer circumferential surface of the disc chucking device, which are centers of rotation; It has a bent portion formed adjacent to the center boss, And the elastic member is inserted into a groove defined by the outer circumferential surface and the bent portion. The method of claim 6, The accommodating portion is a disk chucking device, characterized in that formed at equal intervals around the center hole. The method according to any one of claims 1 to 2, The chuck base has a center hole into which the shaft is inserted, The disk chucking device, characterized in that the elastic piece is formed in a position symmetrical to the receiving portion around the center hole. The method of claim 8, The elastic piece is a disk chucking device comprising a bending portion having an elastic force. The method according to any one of claims 1 to 2, And the chuck base has a turntable, and the turntable is provided with a cushioning member in contact with the disk. The method according to any one of claims 1 to 2, And the chuck pins inserted into the accommodation grooves and the accommodation grooves are formed at 120 ° intervals. The method according to any one of claims 1 to 2, And the elastic member is a helical compression spring. The method of claim 3, The body portion has an inclined portion having an inclination angle, wherein the inclined portion is in contact with the elastic member disc chucking device. The method of claim 13, The inclined portion is a disk chucking device, characterized in that the fixing projections are fixed to the elastic member is formed. The method of claim 14, The chuck pin is a disk chucking device, characterized in that formed with a 120 ° interval. The method of claim 15, The chuck base is a center boss and an outer circumferential surface formed with a center hole to be the center of rotation of the disk chucking device, wherein the center boss is formed in a hexagonal shape; It has a bent portion formed adjacent to the center boss, And the elastic member is inserted into a groove defined by the outer circumferential surface and the bent portion. A disk drive comprising a disk chucking device and a motor for providing rotational force to the disk chucking device, The disk chucking device may include a chuck base having a plurality of housing parts and receiving rotational force by the motor, a chuck pin inserted into the housing part to protrude out of the chuck base, and a chuck pin in a protruding direction of the chuck pin. And an elastic member for providing an elastic force, wherein each of the elastic members elastically supports a pair of adjacent chuck pins adjacent to each other. A disk drive comprising a disk chucking device and a motor for providing rotational force to the disk chucking device, The disk chucking device may include a chuck base provided with rotational force by the motor having a plurality of housing parts, a chuck pin inserted into the housing part and protruding out of the chuck base, and a chuck pin in a protruding direction of the chuck pin. And an elastic member for providing an elastic force, wherein each of the chuck pins is simultaneously pressed by a pair of adjacent elastic members. The method according to any one of claims 17 to 18, The chuck pin protrudes outwardly of the housing and includes a contact portion in contact with the disk and a body portion in contact with the elastic member. The method of claim 19, And the contact portion has an upper inclined portion and a lower inclined portion connected to the upper inclined portion. The method of claim 19, The body portion has a pair of fixing projections protruding in the opposite direction to the contact portion, the end of the elastic member is fixed to the fixing projections, characterized in that the disk drive. The method according to any one of claims 17 to 18, The chuck base may include a center boss and an outer circumferential surface of the disk drive, the center boss being a rotation center of the disk drive; It has a bent portion formed adjacent to the center boss, And the elastic member is inserted into a groove defined by the outer circumferential surface and the bent portion. The method of claim 22, The accommodating portion is a disk drive, characterized in that formed at equal intervals around the center hole. The method according to any one of claims 17 to 18, The chuck base has a center hole into which the shaft is inserted, The disk drive, characterized in that the elastic piece is formed in a position symmetrical to the receiving portion around the center hole. The method of claim 24, The elastic piece has a bending portion having an elastic force. The method according to any one of claims 17 to 18, And the chuck base has a turntable, and the turntable is provided with a cushioning member in contact with the disk. The method according to any one of claims 17 to 18, And the chuck pins inserted into the accommodation grooves and the accommodation grooves are formed at 120 ° intervals. The method according to any one of claims 17 to 18, The elastic member is a disk drive, characterized in that the helical compression spring. The method of claim 19, The body portion is provided with an inclined portion having an inclination angle, the inclined portion is a disk drive, characterized in that the contact with the elastic member. The method of claim 29, The inclined portion is a disk drive, characterized in that the fixing projection is fixed to the elastic member is formed. The method of claim 30, The chuck pin is a disk drive, characterized in that formed at intervals of 120 °. The method of claim 31, wherein The chuck base is a center boss and an outer circumferential surface formed as a center of rotation of the disk drive, the center boss is formed in a hexagonal shape; It has a bent portion formed adjacent to the center boss, And the elastic member is inserted into a groove defined by the outer circumferential surface and the bent portion.

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