JP3524538B2 - Disk drive read head fine adjustment and transmission mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a read head fine adjustment and a transmission mechanism for a disk drive. <P>SOLUTION: The mechanism is provided with a disk rotating device, a moving device, a fine adjustment mechanism, a moving drive motor, a gear set and a position difference compensation device. The inclination angle of a slide rail is adjusted upwards by loosening the fine adjustment screw rod of the fine adjustment mechanism and downwards by tightening it. As soon as the inclination angle of the slide rail is adjusted, the position difference device of the position difference compensation device is pushed up by an elastic means, the different end of the position difference device is rotated in a direction opposite to a moving drive motor main body and a position difference is compensated and adjusted. Simultaneously, a driven gear is constantly held in a pressurized state and engaged with a rack. Thereafter, the moving drive motor drives the gear by rotation and operates a first stage driven gear, thus a second stage driven gear drives the rack simultaneously and a moving sheet is stably and smoothly moved back and forth on the slide rail. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a read head fine adjustment and transmission mechanism for a kind of disk drive, and more particularly to CDROM, DVDROM, RW, VCD, DV.
The present invention relates to a read head fine adjustment and transmission mechanism used for disk drives such as D and MP3.

[0002]

2. Description of the Related Art At present, science and technology are constantly advancing, and DV
When stepping into the D and MP3 areas, the precision required by the DVD and MP3 is relatively high. Therefore, it is necessary to adjust the angle between the laser in the read head and the disk by the fine adjustment mechanism after the device is assembled. The data on the disc can be read. However, the known disk drive requires fine adjustment by a fine operation of an expert in order to make the reading of the read head more accurate after the parts are assembled and combined, and this adjustment process is time-consuming. Not only wasted, but also labor costs were added, the production volume was reduced, and the product price was increased.

Further, in the well-known disk transmission mechanism, a plurality of driven gear sets are combined with a drive motor, one screw rod is penetrated by the side of the read head sheet, and the drive of the motor and the gear set is transmitted. By rotating the screw rod, the read head is driven and operated. In such a structure in which the reading head is driven and moved by the screw rod, the screw thread that combines both the screw rod and the reading head sheet needs to be relatively precise, which results in relatively high processing cost. In addition, the well-known method of driving and moving the reading head by rotating the screw rod requires a relatively smooth transmission effect between the thread of the screw rod and the reading head sheet, so that an appropriate gap is provided between the two. However, due to this gap, the accuracy of the laser reading angle of the reading head was rather insufficient, and the reading effect failure was likely to occur, and the phenomenon of skipping was likely to occur due to slight vibration.

As can be seen from the above description, traditional disk drives suffer from many drawbacks and inconveniences bothering manufacturers and users due to the imperfect design, either in configuration or effectiveness of use. There was a need for improvement.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a read head fine adjustment and transmission mechanism for a disk drive, which not only facilitates the manufacture and assembly of the device, but also the manufacturing cost. By reducing the product price significantly and combining the transmission mechanism with an automatic fine adjustment mechanism, the assembly accuracy of the fleet device is improved, the disk read rate is increased, and the read effect is improved.

[0006]

According to a first aspect of the present invention, in a read head fine adjustment and transmission mechanism of a disk drive, at least one disk rotating device having at least one drive motor for driving and rotating a disk is provided. A moving device comprising at least one set of slide rails and at least one moving sheet, the moving sheet having a disk read head, and reciprocating on the slide rails under the drive of a moving drive motor; Equipped with an elastic body and a fine adjustment screw rod,
One end of the ride rail is provided with the elastic body and the fine adjustment screw rod.
It is housed between the lids and is used for rotation of the fine adjustment screw rod.
Move one end of the slide rail up or down
Fine adjustment used to adjust the slide rail horizontally
Mechanism , movement drive motor, movement drive motor and movement
It is a gear set that is a connection mechanism between seats,
At least one rack, the drive gear, and the drive gear and the rack.
At least one driven gear that meshes with the
Is fixed to the moving seat, and the drive gear moves
At least one of the gear set fixed to the shaft of the
With two seats and a position difference device, the seats being driven as described
The main body of the motor is rotatably accommodated, and the position difference device is
It is fixed to the movement drive motor and is driven by one end of the position difference device.
Gears are provided, and the height of the slide rail is adjusted
When the height of the hook changes, the position difference device supports the elastic means.
More closely mesh the driven gear with the rack to prevent it from coming off.
And a position difference compensating device for preventing the position difference from the read head fine adjustment and transmission mechanism of the disk drive. According to a second aspect of the present invention, there is provided a read head fine adjustment and transmission mechanism for the disk drive, which is provided on one substrate, as the read head fine adjustment and transmission mechanism for the disk drive according to the first aspect. There is. According to a third aspect of the present invention, there is provided a read head fine adjustment and transmission mechanism for a disk drive according to the first aspect, wherein the driven gear comprises at least a first-order driven gear and a second-order driven gear. . According to a fourth aspect of the present invention, there is provided a read head fine adjustment and transmission mechanism for a disk drive according to the third aspect, wherein the first driven gear meshes with a drive gear. According to a fifth aspect of the present invention, there is provided a read head fine adjustment and transmission mechanism for a disk drive according to the third aspect, wherein the second driven gear meshes with a rack. The invention according to claim 6 is characterized in that a compression spring, polyurethane , rubber or another elastic component having the same function is adopted as the elastic means, and the read head fine adjustment of the disk drive according to claim 1 and It is a transmission mechanism. According to a seventh aspect of the present invention, the fine adjustment mechanism includes a rod insertion sheet provided at one end of the slide rail, and a long groove-shaped insertion groove is formed on one surface of the rod insertion sheet. A fine adjustment screw rod is screwed above the, the elastic body is separately accommodated in the lower portion of the rod insertion sheet, and the slide rail is interposed between the fine adjustment screw rod and the elastic body. The read head fine adjustment and transmission mechanism of the disk drive described in 1. Claim 8
9. The read head fine adjustment and transmission mechanism for a disk drive according to claim 7, wherein the elastic body is a compression spring, polyurethane , rubber or other elastic component having the same function. There is. The invention according to claim 9 is characterized in that a bush is provided between the moving seat and the slide rail, and a shaft liner, a bearing, an oil seal, or any other component having the same function is adopted as the bush. A read head fine adjustment and transmission mechanism of the disk drive according to the first aspect.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention provides a kind of read head fine adjustment and transmission mechanism of a disk drive, which comprises:

As shown in FIG. 1, at least one disk rotating device 1 comprises at least one drive motor 10 for driving and rotating a disk.

As shown in FIGS. 1 and 2, the moving device 2
Is provided with at least one set of slide rails 21 and at least one moving sheet 22, a moving disk 22 is provided with a disk read head (not shown), and the slide rails are driven by a moving drive motor 4. Two
Move back and forth on 1.

As shown in FIGS. 1 and 3, the fine adjustment mechanism 3
Is to perform the adjustment of the vertical movement to the slide rail 21, the fine adjustment mechanism 3 comprises a rod inserted sheet 30 to one end of the slide rail 21, a long groove-like insertion grooves 31 in one surface of the rod insertion seat 30 is provided The fine adjustment screw rod 32 is screwed above the insertion groove 31, and the elastic body 33 is separately accommodated in the lower portion of the insertion groove 31 of the rod insertion sheet 30.

Furthermore, the elastic member 33 described above compression spring, Po
It may be polyurethane , rubber or any other elastic component having the same effect.

A mobile drive motor 4 shown in FIGS.

As shown in FIGS. 1, 2, and 4, the gear set 5 is a connecting mechanism between the moving drive motor 4 and the moving seat 22, and includes at least one rack 51, a driving gear 52, and at least one. It comprises a set of driven gears 53, of which the rack 51 is fixed to a suitable part of the moving seat 22 and the drive gear 52 is fixed to the shaft of the moving drive motor 4.

As shown in FIGS. 2 and 4, the position difference compensating device 6 comprises at least one seat 61 and a position differencer 62, and the seat 61 accommodates the aforementioned movement drive motor 4.
Moreover, the main body of the movement drive motor 4 is freely rotated, the position difference device 62 is fixed to the movement drive motor 4 described above, and when the position difference device 62 rotates (a minute amount), the main body of the movement drive motor 4 also moves to this. It rotates synchronously with this, and the position difference device 62
The driven gear 53 of the gear set 5 is provided on one side, and the elastic means 63 is provided vertically on the other side.

The driven gear 53 includes at least a first-order driven gear 531 and a second-order driven gear 532, of which the first-order driven gear 531 meshes with the drive gear 52.
The second driven gear 532 meshes with the rack 51.

Further, a compression spring, Po the resilient means 63 of the above
Polyurethane , rubber or other elastic means having the same effect may be employed.

The mechanism of the present invention described above is mounted on a single substrate 7, as shown in FIGS.

Since the above-mentioned mechanical components must be combined so that the read head of the disc drive and the disc to be read are kept vertical to provide the best disc reading effect, the present invention is The tilt angle of the slide rail 21 is adjusted upward by loosening the fine adjustment screw rod 32 or downward by tightening the fine adjustment screw rod 32. This is as shown in FIG. At the same time, the position difference device 62 of the position difference compensation device 6 pushes the position difference device 62 upward with the elastic means 63, and the position difference device 62 rotates the main body of the moving drive motor 4 in the opposite direction to perform the position difference compensation adjustment. At the same time, the driven gear 53 is made to maintain the lower pressure meshing with the rack 51, which is as shown in FIGS. , The drive motor 4 rotates to drive the drive gear 52 to drive the first driven gear 531, and at the same time, the second driven gear 532 drives the rack 51 accordingly to stabilize the moving seat 22 on the slide rail 21. And smoothly reciprocating, which is as shown in FIG.

As shown in FIGS. 2 and 3, in the present invention, a bush 221 is provided between the moving seat 22 and the slide rail 21, and the bush 221 has a shaft liner, a bearing, an oil seal, or the like. It is possible to adopt a component having a function so that the moving sheet 22
The slide rail 21 and the slide rail 21 are connected more closely without a gap, and the slide movement of the moving sheet 22 is smoothly performed.

[0020]

In summary, the present invention effectively solves the drawbacks and inconveniences of traditional disk drives, and at the same time has many of the functions and practical values mentioned above, while still being the same or in the same technical area. There is no public use of similar products and, therefore, the invention is subject to patentability.

[Brief description of drawings]

FIG. 1 is a plan view of the present invention (rear view of a read head).

FIG. 2 is a local three-dimensional view of the main mechanism of the present invention.

FIG. 3 is a sectional view of a slide rail adjusting embodiment of the present invention.

FIG. 4 is a front view of a position difference compensating device adjustment embodiment of the present invention.

FIG. 5 is a diagram showing a transmission movement operation example of the present invention.

[Explanation of symbols]

1 Rotating Device 2 Moving Device 3 Fine Adjustment Mechanism 4 Moving Drive Motor 5 Gear Set 6 Position Difference Compensating Device 7 Board 10 Drive Motor 21 Slide Rail 22 Moving Sheet 30 Rod Inserting Sheet 31 Inserting Groove 32 Fine Adjusting Screw Rod 33 Elastic Body 51 Rack 52 drive gear 53 driven gear 61 seat body 62 position differencer 63 elastic means 531 first-order driven gear 532 second-order driven gear 221 bush

Claims (9)

(57) [Claims] 1. A read head fine adjustment and transmission mechanism for a disk drive, comprising at least one disk rotation device comprising at least one drive motor for driving and rotating the disk, at least one set of slide rails, and at least one. And a moving device which is provided with a disk read head on the moving sheet and which reciprocates on a slide rail under the drive of a moving drive motor, an elastic body, and a fine adjustment screw rod. The sly
One end of the drail is the elastic body and the fine adjustment screw rod.
It is housed between the
The slide rail by moving one end of the slide rail up or down.
Fine adjustment machine used to adjust the ride rail horizontally
A moving drive motor, and a connecting mechanism between the moving drive motor and the moving sheet.
Gear set, at least one rack, drive teeth
Vehicle and at least one set that meshes with the drive gear and the rack
Driven gears to secure the rack to the moving seat.
The drive gear is fixed to the shaft of the moving drive motor,
A gear set , at least one seat and a position difference device, the seat being
The main body of the moving drive motor described above is rotatably accommodated and
The difference device is fixed to the above-mentioned moving drive motor, and
The driven gear is installed at the end to adjust the height of the slide rail.
When the rack height changes due to alignment, the position difference device is elastic
The driven gear is closely meshed with the rack due to the support of the means.
A read head fine adjustment and transmission mechanism of a disk drive, comprising: a position difference compensating device for preventing the falling of the read head. 2. The read head fine adjustment and transmission mechanism of a disk drive according to claim 1, wherein the read head fine adjustment and transmission mechanism of the disk drive is provided on one substrate. 3. The read head fine adjustment and transmission mechanism for a disk drive according to claim 1, wherein the driven gear comprises at least a first-order driven gear and a second-order driven gear. 4. The read head fine adjustment and transmission mechanism of a disk drive according to claim 3, wherein the first driven gear meshes with a drive gear. 5. The read head fine adjustment and transmission mechanism of a disk drive according to claim 3, wherein the second driven gear meshes with a rack. 6. The elastic means includes a compression spring and a polyurea.
2. The read head fine adjustment and transmission mechanism for a disk drive according to claim 1, wherein a rubber, rubber or other elastic component having the same function is adopted. 7. The fine adjustment mechanism comprises a rod insertion sheet provided at one end of a slide rail, and a long groove-shaped insertion groove is formed on one surface of the rod insertion sheet, and the rod insertion sheet is provided above the insertion groove. The fine adjustment screw rod is screwed on the, the elastic body is separately accommodated in the lower portion of the rod insertion sheet, and the slide rail is interposed between the fine adjustment screw rod and the elastic body. Fine adjustment and transmission mechanism of the read head of the described disk drive. 8. The elastic body includes a compression spring, polyurethane ,
8. The read head fine adjustment and transmission mechanism of a disk drive according to claim 7, wherein rubber or another elastic component having the same function is adopted. 9. A bush is provided between the moving seat and the slide rail, and the bush has a shaft liner, a bearing, an oil seal, or other parts having the same function. 1. A read head fine adjustment and transmission mechanism of the disk drive described in 1.