TWI460721B - Disc device and traverse thereof - Google Patents

Description

Optical disc drive and its movement module

The present invention relates to an electronic device, and more particularly to an optical disk drive and a core module thereof.

The movement module of the disc drive is the core structure of the disc drive. The movement module of the existing optical disc drive has a tilt adjustment structure for adjusting the perpendicularity between the optical axis of the optical beam and the optical disc, thereby ensuring the read and write effect of the optical pickup. However, existing optical pickup tilt adjustment structures are typically adjusted directly using a combination of screws and spring elements. The elastic element can be a spring that adjusts the tilt angle of the optical pickup by adjusting the screw to squeeze the spring. In this way, each time a disc player is manufactured, an additional one or more elasticity is required, which not only increases the number of parts but also requires more time for assembly, resulting in an increase in cost.

In view of this, it is necessary to provide a core module of a lower cost optical disc drive.

It is also necessary to provide a lower cost optical disc drive.

A movement module of a disc drive includes a cover body, a carrier, a spindle motor, a guide rod, and an optical pickup. The cover body is disposed on the carrier plate, and the spindle motor and the guide rod are fixed on the carrier, and the spindle motor can pass out of the cover body. The optical pickup is slidably fixed to the guide bar and exposed to the outside of the cover. The movement module also includes An adjusting device, the cover body is provided with at least one elastic member integrally formed with the cover body, the guiding rod is limited between the adjusting device and the elastic member, and the adjusting device can move the guiding rod relative to or away from the cover body .

A disc drive includes a movement module. The movement module includes a cover body, a carrier, a spindle motor, a guide rod, and an optical pickup. The cover body is disposed on the carrier plate, and the spindle motor and the guide rod are fixed on the carrier, and the spindle motor can pass out of the cover body. The optical pickup is slidably fixed to the guide bar and exposed to the outside of the cover. The movement module includes an adjusting device, and the cover body is provided with at least one elastic member integrally formed with the cover body. The guiding rod is limited between the adjusting device and the elastic member, and the adjusting device can make the guiding rod relatively Or move away from the cover.

The movement module can adjust the inclination of the optical pickup by adjusting the adjusting device and the elastic member integrally formed on the cover body, and does not need to use other elastic components, thereby reducing the number of parts and saving assembly time and reducing the assembly time. cost.

100‧‧‧ movement module

10‧‧‧Hosting

20‧‧‧ cover

30a, 30b‧‧‧guides

40‧‧‧Spindle motor

50‧‧‧Optical read head

12‧‧‧ first side

14‧‧‧ second side

11‧‧‧ first through hole

13‧‧‧First opening

31a, 31b‧‧‧ first end

33a, 33b‧‧‧ second end

35a, 35b, 37a, 37b‧‧‧ guide rod fixing device

39‧‧‧Adjustment device

351‧‧‧Support

353‧‧‧ pressure plate

355‧‧‧ fixing screws

3510‧‧ ‧ gap

3531‧‧‧Threaded holes

21‧‧‧Second through hole

23‧‧‧second opening

60‧‧‧Lock screw

25‧‧‧Flexible parts

27‧‧‧Opening

53‧‧‧ Objective lens

1 is a perspective view of a movement module of a disc drive according to a preferred embodiment.

2 is a first exploded view of the movement module shown in FIG. 1.

3 is a second exploded view of the movement module shown in FIG. 1.

4 is another perspective view of the movement module shown in FIG. 2.

Figure 5 is a cross-sectional view taken along the line V-V of the movement module shown in Figure 1.

Please refer to FIG. 1 and FIG. 2, which is a movement module 100 of a disc drive. The movement module 100 includes a carrier 10, a cover 20, guides 30a and 30b, a spindle motor 40, and an optical pickup 50. Wherein, the two guiding rods 30a and 30b and the spindle motor 40 are fixed on the bearing seat 10, the two guiding rods 30a and 30b are parallel to each other, and the optical pickup 50 is slidably fixed to the two guiding rods 30a and 30b, and the cover body 20 is covered on the carrier 10.

Referring to FIG. 3 and FIG. 4 , the first side 12 of the carrier 10 is provided with a circular first through hole 11 and the second side 14 of the carrier 10 opposite to the first side 12 is open to communicate with the first through hole 11 . The first opening 13. The first through hole 11 is sized to allow the spindle motor 40 to pass therethrough and the spindle motor 40 is rotatable therein.

The guide bars 30a and 30b are disposed in parallel on the first opening 13, so that the optical pickup 50 fixed thereto is exposed by the first opening 13 and slides in the first opening 13. The guide bars 30a and 30b have first ends 31a and 31b and second ends 33a and 33b, respectively.

The movement module 100 further includes guide rod fixing devices 35a, 35b, 37a and 37b and an adjustment device 39. The first ends 31a and 31b of the guide bars 30a and 30b are respectively fixed to the second side 14 of the carrier 10 by the guide rod fixing devices 35a and 35b, and the second ends 33a and 33b are respectively supported by the guide rod fixing devices 37a, 37b. It is fixed on the first side of the carrier. In the present embodiment, the guide rod fixing devices 35b, 37a, and 37b are respectively fixed to the carrier 10, and the first end 31b and the second ends 33a and 33b are fixedly received therein. The guide rod fixing device 35a is fixed to the carrier 10 and located in the first opening 13. The guide rod fixing device 35a includes a holder 351, a pressing plate 353, and a fixing screw 355. The holder 351 is located between the pressure plate 353 and the carrier 10. The fixing screw 355 is disposed through the pressing plate 353 and the holder 351 and fixes the pressing plate 353 and the holder 351 to the carrier 10. The holder 351 is provided with a notch 3510 for positioning the first end 31a therein and the opposite sides of the first end 31a are opposed to the pressing plate 353 and the cover 20 by the notch 3510 and the first opening 13, respectively. The platen 353 is provided with a threaded hole 3531 at a position corresponding to the notch 3510. The adjusting device 39 can be screwed into the threaded hole 3531 and supported on one side of the first end 31a by the threaded hole 3531. The adjusting device 39 is a screw having a substantially cylindrical shape and a cross-sectional area that is in contact with the adjusting device 39 at the first end 31a. The accumulation is large so that the first end 31a can be stably supported by it.

Referring to FIG. 5, the cover 20 is fixed to the carrier 10 for covering the carrier 10. In the present embodiment, the cover 20 is fixed to the carrier 10 by the locking screw 60. In other embodiments, the cover 20 can be fixed to the carrier 10 by snapping or bonding. The cover body 20 is provided with a circular second through hole 21 at a position corresponding to the first through hole 11. The cover body 20 is provided with a substantially rectangular second opening 23 at a position corresponding to the first opening 13. The second through hole 21 also passes the spindle motor 40, and the spindle motor 40 is rotatable therein. The second opening 23 is smaller than the area of the first opening 13, and the optical pickup 50 is partially exposed and slid therein. An elastic member 25 and an opening 27 are formed in the cover 20 at a position corresponding to the first end 31a of the guide bar 30a. The elastic member 25 and the opening 27 are stamped from the cover 20. Specifically, the elastic member 25 is a spring piece which is integrally formed on the cover body 20. One end of the elastic member 25 is formed on the wall of the opening of the opening 27, and the other end is bent inwardly and passed through the opening 27 against the first end 31a of the guide rod 30a and away from the other side of the adjusting device 39. Therefore, the first end 31a of the guide bar 30a is stably restricted between the adjustment device 39 and the elastic member 25.

The spindle motor 40 has a bearing surface 41 for carrying a compact disc (not shown). The bearing surface 41 passes through the first through hole 11 and the second through hole 21 outside the movement core module 100. The optical pickup 50 has an upper surface 51. The objective lens 53 is located on the side where the surface of the optical pickup 50 is located, and is exposed through the first opening 13 and the second opening 23. When the carrying surface 41 carries the optical disc, the upper surface 51 is opposed to the reading surface of the optical disc. The objective lens 53 is for concentrating the light beam emitted from the optical pickup 50 on the reading surface of the optical disk or condensing the light beam reflected from the optical disk reading surface.

After the initial assembly of the movement module 100, the height of the guide rod 30a is adjusted by the adjusting device 39 so that the upper surface 51 and the main surface of the optical pickup 50 fixed to the guide rods 30a and 30b The optical disk bearing surface 41 on the shaft motor 40 is parallel such that the optical axis direction of the optical pickup 50 is perpendicular to the direction of the optical disk. Since the first end 31a of the guide rod 30a is restricted between the adjusting device 39 and the elastic member 25, the rotation adjusting device 39 adjusts the direction of the device relative to the guide rod 30a or away from the guide rod 30a, so that the guide rod 30a can be opposite or away from the cover body The movement of 20, that is, the guide bar 30a moves up and down along the optical axis direction of the optical pickup 50, thus achieving the purpose of adjusting the tilt angle of the optical pickup 50 on the guide bars 30a and 30b.

In the above embodiment, the movement module 100 is provided with the elastic member 25 and the adjusting device 39 as the inclination adjusting mechanism for adjusting the optical pickup 50 only at the first end 31a of the guide rod 30a. In other embodiments, the movement module 100 can also be provided with an elastic member 25 and an adjustment device 39 at the positions of the first ends 31a and 31b of the guide bars 30a and 30b and the second ends 33a and 33b as adjustment optical readings. The tilt adjustment mechanism of the head 50 is taken.

The above-mentioned movement module can not only adjust the inclination of the optical pickup by the adjusting device 39 and the elastic member 25 integrally formed on the cover 20, and does not need to use other elastic members, thereby reducing the number of parts and saving assembly time. , reducing costs.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention are It should be covered by the following patent application.

20‧‧‧ cover

31a‧‧‧ first end

351‧‧‧Support

353‧‧‧ pressure plate

39‧‧‧Adjustment device

60‧‧‧Lock screw

25‧‧‧Flexible parts

27‧‧‧Opening

Claims (10)

A movement module of a disc drive, the movement module comprising a cover body, a carrier, a spindle motor, a guide rod and an optical reading head, the cover body is disposed on the carrier plate, the spindle motor and the guide rod Fixed on the carrier, the spindle motor can pass out of the cover body, the optical pickup is slidably fixed on the guide rod and exposed through the cover, and the improvement is that the movement module further includes an adjustment The device is provided with at least one elastic member integrally formed with the cover body, the guide rod is constrained between the adjusting device and the elastic member, the adjusting device supports the guiding rod and can make the guiding rod face or face away from the cover Body movement. The movement module of claim 1, wherein the movement module further comprises a guide rod fixing device, wherein the guide rod fixing device is fixed on the bearing seat, and one end of the guide rod is received in the guide rod In the fixing device, the adjusting device is supported on the guiding rod through the fixing device and moves the guiding rod in the fixing device, and the elastic member passes through the guiding rod fixing device to press against the guiding rod. The movement module of claim 2, wherein the guide rod fixing device comprises a support and a pressure plate, the support and the pressure plate are fixed on the bearing seat, and the support is located on the pressure plate and the cover Between the plates, the support is provided with a notch, and the guiding rod is located in the notch and respectively opposite to the pressing plate and the cover plate, and the elastic member is pressed against the guiding rod through the guiding rod fixing device through the notch The adjusting device passes through the pressure plate and supports the guide rod. The movement module of claim 1, wherein the cover body further defines an opening at the position of the elastic member, and one end of the elastic member is formed on the hole wall of the opening, and the other end is worn. The opening is pressed against the guide rod. The movement module of claim 4, wherein the elastic member and the opening are formed by stamping from the cover. The movement module of claim 1, wherein the adjusting device is a screw The cross-sectional area of the device is greater than the area of contact of the guide with the adjustment device. An optical disc drive comprising a movement module, the movement module comprising a cover body, a carrier, a spindle motor, a guide rod and an optical reading head, the cover body being disposed on the carrier plate, the spindle motor And the guide rod is fixed on the carrier, the spindle motor can pass out of the cover body, the optical pickup is slidably fixed on the guide rod and exposed outside the cover, and the improvement is: the movement module Including an adjusting device, the cover body is provided with at least one elastic member integrally formed with the cover body, the guiding rod is limited between the adjusting device and the elastic member, the adjusting device supports the guiding rod and can make the guiding rod opposite or Move away from the cover. The optical disc drive of claim 7, wherein the movement module further comprises a guide rod fixing device, wherein the guide rod fixing device is fixed on the bearing seat, and one end of the guiding rod is received in the guiding rod In the device, the adjusting device is supported on the guiding rod through the fixing device and moves the guiding rod in the fixing device, and the elastic member passes through the guiding rod fixing device to press against the guiding rod. The optical disc drive of claim 8, wherein the guide rod fixing device comprises a support and a pressure plate, the support and the pressure plate are fixed on the support base, and the support is located on the pressure plate and the cover plate. a gap is formed in the support, the guide rod is located in the notch and is opposite to the pressure plate and the cover plate respectively, and the elastic member is pressed against the guide rod by the notch through the guide rod fixing device The adjustment device passes through the pressure plate and supports the guide rod. The optical disc drive of claim 7, wherein the adjusting device is a screw, and the adjusting device has a cross-sectional area larger than an area of the guiding rod in contact with the adjusting device.