JP2004171668A - Disk carrier adjustment structure of main shaft motor of disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the disk carrier adjustment structure of the main shaft motor of a disk device with which the balancing adjustment of a disk carrier can be performed more quickly and more easily. <P>SOLUTION: A plurality of adjusting members and a plurality of positioning holes are included in the structure. These positioning holes are installed in a disk carrier or a rotor hub at equal angles and symmetry and the adjusting members are screwed into the positioning holes to be provided in the holes and they are formed so as to be brought into contact between the disk carrier and the rotor hub. Since the spacing between the carrier and the hub can be adjusted by changing extent of contact of the members, it is possible to keep the carrier and the hub horizontally and also it is possible to rotate the carrier stably and in a state in which the carrier is balanced. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a disk carrier adjustment structure of a spindle motor in a disk drive, and in particular, a disk drive of a disk drive uses a plurality of adjustment members to adjust a distance between a disk carrier and a rotor hub, thereby achieving a disk drive. The present invention relates to a disk carrier adjusting structure of a spindle motor of a disk device capable of quickly adjusting the equilibrium state of a carrier.
[0002]
[Prior art]
Conventionally, this type is as follows.
[0003]
As shown in FIGS. 1 and 2, the main shaft motor of the conventional disk drive usually includes a disk carrier 10, a shaft 20, a rotor hub 30, and a stator set 40. The disk carrier 10 is provided with a holding seat 11 for locking and placing a disk, the shaft 20 is formed so as to be connected to the disk carrier 10 and the rotor hub 30, and a shaft tube 41 is fixed to the stator set 40. An alternating magnetic field is formed under the control of the circuit board 42. Further, the annular magnetic field 31 that can induce the alternating magnetic field of the stator set 40 is arranged around the rotor hub 30, so that the disk carrier 10 and the disk rotate simultaneously. There are things that can be linked together.
[0004]
Further, as a conventional balance device of a disk drive, a base fixed to a vertical plane, a rotating shaft assembled at the center of the base, a disk carrier mounted on the rotating shaft, and a disk carrier. There is a device which is constituted by a locking device for locking an assembled disk to solve the problem of non-uniformity of the medium of the disk (for example, see Patent Document 1).
[0005]
[Patent Document 1]
Chinese Utility Model Patent No. 01209547.8 No.
[Problems to be solved by the invention]
Regarding the former spindle motor in the above-mentioned conventional disk drive, when the disk carrier 10 is initially assembled on the shaft 20, the disk carrier 10 tends to be slightly inclined with respect to the rotor hub 30. In order to avoid the influence of the rotational balance and the yield rate of the finished product on the disk drive due to the inclination of the disk carrier 10, it is difficult to keep the inclination of the disk carrier 10 upward by using a lathe in the industry. Usually, the side is processed and polished. In this way, the thickness of the disc carrier 10 on the inclined side is polished from a to b, so that the entire surface of the disc carrier 10 is It can be rotated in equilibrium while maintaining parallelism. However, in the method using the above-mentioned lathe, the inclination state of the disk carrier 10 can be corrected and adjusted. However, since the equilibrium state of the disk carrier 10 must be repeatedly measured during the polishing process, the manufacturing process is long. In addition, there has been a problem that excessive destructive polishing affects the structural strength and rotational stability of the disk carrier 10.
[0007]
Regarding the latter balancer in the conventional disk device described above, the rotation of the disk carrier can be kept in balance as a weight by attaching a paper tape to the disk carrier, but since it has to rely on human hands, it must be attached. However, it takes time and lacks accuracy.
[0008]
The present invention has been made in view of such a problem, and an object of the present invention is to provide a plurality of adjusting members to provide a space between a disk carrier of a spindle motor of a disk device and a rotor hub. Abuts and adjusts the gap between the disk carrier and the rotor hub without using a destructive method by merely changing the degree of abutment of the adjusting member, and further adjusts the state of inclination of the disk carrier with respect to the rotor hub. By correcting, the disk carrier and the rotor hub can be kept horizontal, and can rotate stably and equilibrium, so that the horizontal positioning of the disk carrier can be reliably and easily adjusted. The present invention aims to provide a disk carrier adjustment structure for a main shaft motor.
[0009]
A first object of the present invention is to adjust the distance between a disk carrier and a rotor hub by using a plurality of adjustment members, and to correct the inclination of the disk carrier and the rotor hub, thereby adjusting the balance of the disk carrier. It is an object of the present invention to provide a disk carrier adjusting structure of a spindle motor of a disk device, which can make the disk drive quicker and simpler.
[0010]
A second object of the present invention is to adjust the interval between the disc carrier and the rotor hub by adjusting the gap between the disc carrier and the rotor hub by using a plurality of adjusting members to align with the plurality of positioning holes, and to correct the inclined state of the disc carrier and the rotor hub. Accordingly, it is an object of the present invention to provide a disk carrier adjustment structure of a spindle motor of a disk device, which can more quickly and easily adjust the balance of a disk carrier.
[0011]
[Means for Solving the Problems]
To achieve the above object, a disk carrier adjusting structure of a spindle motor of a disk drive according to the present invention is as follows. That is,
At least one adjustment member is included. Since the adjusting member can be abutted between the disc carrier and the rotor hub, the distance between the disc carrier and the rotor hub is adjusted by changing the degree of contact of the adjusting member, and By correcting the inclined state between the carrier and the rotor hub, the disk carrier and the rotor hub can be kept horizontal, and can rotate stably and equilibrium.
[0012]
Further, the disk carrier adjusting structure of the spindle motor of the disk device of the present invention can be configured as follows.
1. The adjusting member comprises a screw.
2. The adjusting member includes a plurality of columns having different lengths.
3. The adjusting member includes a plurality of elastic members having different elastic coefficients.
4. The adjusting member is made of metal, alloy, or plastic.
5. The adjustment member is fixed by welding, heat welding, or an adhesive.
6. The disc carrier is provided with a plurality of positioning holes for screwing adjustment members, and by changing the degree of screwing of the adjustment members into the positioning holes, the distance between the disc carrier and the rotor hub is adjusted. I do.
7. The rotor hub is provided with a plurality of positioning holes for screwing an adjusting member, and the distance between the disk carrier and the rotor hub is adjusted by changing the degree of screwing of the adjusting member into the positioning hole. I do.
8. The positioning holes are installed on the disk carrier so as to be equiangular and symmetric.
9. The positioning holes are installed on the rotor hub so as to be equiangular and symmetric.
10. A flange is additionally provided on the lower peripheral edge of the positioning hole.
11. Another flange is protruded from the upper peripheral edge of the positioning hole.
12. A non-slip pad is additionally provided on the disc carrier.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0014]
FIG. 3 is an exploded perspective view of the disk drive adjusting structure of the spindle motor of the disk drive according to the first embodiment of the present invention, and FIG. FIG. 5 is a cross-sectional view of an assembled state before performing the adjustment, and FIG. 5 is a cross-sectional view of an assembled state after the disk carrier adjustment structure of the spindle motor of the disk drive of the first embodiment of the present invention has performed balance adjustment. FIG. 6 is an exploded perspective view of a disk drive adjusting structure of the spindle motor of the disk drive according to the second embodiment of the present invention, and FIG. 7 is a disk carrier adjustment of the spindle motor of the disk drive of the second embodiment of the present invention. It is sectional drawing of the state assembled by the structure.
[0015]
Since the partial members of the disk carrier adjusting structure of the spindle motor of the disk drive of the present invention are the same as those of the conventional spindle motor of the conventional disk drive in the prior art, the members of the same parts are denoted by the same reference numerals. Therefore, it will not be described again in detail here.
[0016]
Embodiment 1
Referring to FIG. 3, the disk carrier adjusting structure of the spindle motor of the disk device according to the first embodiment of the present invention mainly includes a plurality of adjusting members 12 and a plurality of positioning holes 13. The positioning holes 13 are installed on the disk carrier 10 so as to be equiangular and symmetrical, and the adjusting member 12 is formed to be screwed into the positioning holes 13 so as to abut between the disk carrier 10 and the rotor hub 30. You. As described above, in the present invention, the distance between the disk carrier 10 and the rotor hub 30 can be quickly adjusted only by adjusting the degree of contact of the adjustment member 12. Can be kept horizontal and can rotate stably and equilibrium.
[0017]
Referring again to FIG. 3, the disk carrier adjustment structure according to the first embodiment of the present invention is such that a plurality of adjustment members 12 and a plurality of positioning holes 13 are provided in a spindle motor of a disk drive. The spindle motor of the disk drive includes a disk carrier 10, a shaft 20, a rotor hub 30, and a stator set 40. The disc carrier 10 can be integrally connected to the shaft 20 and the rotor hub 30. The adjusting member 12 is preferably made of a screw, can be made of a metal, an alloy or a plastic, and can be assembled in a gap 14 formed between the disk carrier 10 and the rotor hub 30. The positioning holes 13 are installed on the disc carrier 10 so as to be equiangular and symmetrical (for example, in the case of three positioning holes 13, they are installed so as to be symmetrical at an angle of 120 °). Is used for screwing the adjusting member 12. Since the adjusting member 12 is screwed downward through the positioning hole 13 via the front surface of the disk carrier 10 as described above, the adjusting member 12 is formed so as to contact the upper surface of the rotor hub 30. Therefore, in the present invention, the distance between the disk carrier 10 and the rotor hub 30 can be quickly adjusted by simply changing the degree (the degree of abutment) of the adjusting member 12 screwed into the positioning hole 13. The disk carrier 10 and the rotor hub 30 can be kept horizontal, and can rotate stably and equilibrium.
[0018]
Referring to FIGS. 4 and 5, when the adjusting structure of the disk carrier according to the first embodiment of the present invention is used for the inclined disk carrier 10, the user can adjust an appropriate number of adjusting members 12 so that the disk carrier 10 is inclined downward. By simply screwing in the positioning hole 13 near one side and changing the degree of screwing (the degree of contact) of each adjusting member 12, the size of the gap 14 between the disk carrier 10 and the rotor hub 30 can be quickly increased. The disc carrier 10 and the rotor hub 30 can be adjusted, and the tilt state between the disc carrier 10 and the rotor hub 30 can be corrected. Can be. After the present invention has completed the above-described procedure of the equilibrium adjustment, the adjustment member 12 is fixed by selecting a method such as welding, heat welding, or applying an adhesive according to the material (metal, alloy, plastic) of the adjustment member 12, The adjustment member 12 can be prevented from loosening or falling off, and the disk carrier 10 can be prevented from tilting again.
[0019]
Furthermore, the positioning hole 13 of the present invention can be installed at a position corresponding to the radial direction of the disk carrier 10 according to the demand for use, for example, it can be installed inside or outside the disk carrier 10. The structure of the positioning hole 13 can be reinforced by selectively projecting a flange 331 at the lower peripheral edge of the positioning hole 13. In addition, since the non-slip pad 15 is provided on the upper surface of the disk carrier 10, the disk can be prevented from slipping on the disk carrier 10 during rotation.
[0020]
Embodiment 2
Referring to FIGS. 6 and 7, the disk carrier adjusting structure of the spindle motor of the disk drive according to the second embodiment of the present invention includes a plurality of adjusting members 32 and a plurality of positioning holes 33 between the disk carrier 10 and the rotor hub 30. Is installed. Compared with the first embodiment, in the second embodiment of the present invention, the positioning hole 33 is formed in the rotor hub 30, and the adjusting member 32 is screwed upward from inside the rotor hub 30 so as to pass through the positioning hole 33. Therefore, it is formed so as to be in contact with the back surface of the disk carrier 10. Therefore, also in the second embodiment of the present invention, the size of the gap 14 between the disk carrier 10 and the rotor hub 30 can be increased by simply changing the degree of screwing (the degree of contact) of each adjustment member 32 as in the first embodiment. The disk carrier 10 and the rotor hub 30 can be kept horizontal by rotating the disk carrier 10 and the rotor hub 30 by adjusting the inclination of the disk carrier 10 and the inclination of the rotor hub 30 at the same time. it can. Furthermore, the positioning hole 13 can be selectively installed inside or outside the rotor hub 30 according to the demand in use, and another flange 331 is protruded from the upper peripheral edge of the positioning hole 33. Thereby, the structure of the positioning hole 33 can be strengthened.
[0021]
In addition, the adjusting members 12 and 32 and the positioning holes 13 and 33 of the first and second embodiments of the present invention can be replaced with another structure that can adjust the gap 14 between the disk carrier 10 and the rotor hub 30. For example, a plurality of columns having different lengths, a plurality of elastic members having different elastic coefficients, or the like can be used.
[0022]
Referring again to FIGS. 1 and 3, the disk carrier adjusting structure of the spindle motor of the disk drive according to the present invention has an adjusting member 12 and a positioning hole 13 provided between the disk carrier 10 and the rotor hub 30. By simply changing the degree of contact, the distance between the disk carrier 10 and the rotor hub 30 can be adjusted, and the inclination state between the disk carrier 10 and the rotor hub 30 can be corrected. In the spindle motor of the conventional disk drive, the disk carrier 10 polished by a lathe processing method having destructive properties cannot shorten the manufacturing process and affects the strength of the structure of the disk carrier 10. Therefore, the disk carrier adjusting structure of the spindle motor of the disk drive according to the present invention can keep the disk carrier 10 and the rotor hub 30 horizontal by a non-destructive method, and can stably operate the disk carrier. Can rotate to equilibrium.
[0023]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the disk carrier adjustment structure of the spindle motor of the disk drive of this invention, the space | interval between a disk carrier and a rotor hub is adjusted using a several adjustment member, and the inclination state of a disk carrier and a rotor hub is corrected. This has the advantage that the balancing of the disk carrier can be made quicker and easier.
[0024]
According to the disk carrier adjustment structure of the spindle motor of the disk drive of the present invention, the distance between the disk carrier and the rotor hub is adjusted by using a plurality of adjustment members to align with the plurality of positioning holes. Correcting the inclination with the hub has the advantage that the balancing of the disk carrier can be made quicker and easier.
[0025]
The present invention may be embodied in other ways without departing from its spirit and essential characteristics. Accordingly, the preferred embodiments described herein are illustrative and not limiting.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an assembled state before a disk carrier of a spindle motor of a conventional disk drive performs balance adjustment.
FIG. 2 is a cross-sectional view of an assembled state after a disk carrier of a spindle motor of a conventional disk device has been adjusted for balance.
FIG. 3 is an exploded perspective view of the spindle motor of the disk device according to the first embodiment of the present invention, which is formed by a disk carrier adjusting structure.
FIG. 4 is a sectional view of an assembled state before a disk carrier adjustment structure of a spindle motor of the disk device according to the first embodiment of the present invention performs balance adjustment.
FIG. 5 is a sectional view of an assembled state after the disk carrier adjustment structure of the spindle motor of the disk device according to the first embodiment of the present invention has performed balance adjustment.
FIG. 6 is an exploded perspective view of a spindle motor of a disk drive according to a second embodiment of the present invention, which is formed by a disk carrier adjusting structure.
FIG. 7 is a cross-sectional view of a disk drive according to a second embodiment of the present invention, which is assembled by a disk carrier adjusting structure of a spindle motor.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Disc carrier 11 Nipping seat 12 Adjusting member 13 Positioning hole 131 Flange 14 Gap 15 Non-slip pad 20 Shaft 30 Rotor hub 31 Ring magnet 32 Adjusting member 33 Positioning hole 331 Flange 40 Stator set 41 Shaft tube 42 Circuit board

Claims (13)

A disk carrier adjustment structure for a spindle motor in a disk device including at least one adjustment member (12), wherein the adjustment member (12) is abutted between a disk carrier (10) and a rotor hub (30). Therefore, the distance between the disk carrier (10) and the rotor hub (30) is adjusted by changing the degree of contact of the adjusting member (12), and further, the disk carrier (10) and the rotor hub ( By correcting the inclined state with respect to the disk carrier (30), the disk carrier (10) and the rotor hub (30) can be kept horizontal, and can rotate stably and equilibrium. Disc carrier adjustment structure for spindle motor. The disk carrier adjusting structure for a spindle motor of a disk drive according to claim 1, wherein the adjusting member (12) is formed of a screw. The disk carrier adjusting structure for a spindle motor of a disk drive according to claim 1, wherein the adjusting member (12) comprises a plurality of pillars having different lengths. 2. A disk carrier adjusting structure for a spindle motor of a disk drive according to claim 1, wherein said adjusting member comprises a plurality of elastic members having different elastic coefficients. 5. A disk carrier adjusting structure for a spindle motor of a disk drive according to claim 1, wherein said adjusting member (12) is made of metal, alloy or plastic. 5. A disk carrier adjusting structure for a spindle motor of a disk drive according to claim 1, wherein said adjusting member (12) is fixed by welding, heat welding, or adhesive application. The disc carrier (10) is provided with a plurality of positioning holes (13) for screwing the adjusting member (12), and the adjusting member (12) is screwed into the positioning hole (13). The disk carrier adjusting structure for a spindle motor of a disk drive according to claim 1 or 2, wherein the distance between the disk carrier (10) and the rotor hub (30) is adjusted by changing the degree of rotation. The rotor hub (30) is provided with a plurality of positioning holes (13) for screwing the adjusting member (12), and the adjusting member (12) is screwed into the positioning hole (13). The disk carrier adjusting structure for a spindle motor of a disk drive according to claim 1 or 2, wherein the distance between the disk carrier (10) and the rotor hub (30) is adjusted by changing the degree of rotation. The disk carrier adjusting structure of a spindle motor of a disk drive according to claim 7, wherein the positioning holes (13) are installed in the disk carrier (10) so as to be equiangular and symmetric. The disk carrier adjusting structure for a spindle motor of a disk drive according to claim 8, wherein the positioning holes (13) are installed on the rotor hub (30) so as to be equiangular and symmetric. The disk carrier adjusting structure for a spindle motor of a disk drive according to claim 7, wherein a flange (331) is additionally provided at a lower peripheral edge of the positioning hole (33). 9. The disk carrier adjusting structure for a spindle motor of a disk drive according to claim 8, wherein another flange (331) is projected from an upper peripheral edge of said positioning hole (33). The disk carrier adjusting structure for a spindle motor of a disk drive according to claim 1, wherein a non-slip pad (15) is additionally provided on the disk carrier (10).

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