JP2010086599A - Optical disk reproducing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To properly reproduce information from an optical disk even when the optical disk has unbalanced load and to prevent unnecessary vibration. <P>SOLUTION: An optical disk reproducing apparatus includes: a reproducing section 6 which is provided with a pin at a front face and which reproduces information from the optical disk, a protruding section 7 with a pin inserted therein and which protrudes to the front, an elasticity holding section that is provided with an elastic body and that holds a rear portion with the elastic body, a holding section 11 to which the protruding section is inserted and which is provided with a long hole part 111 where the protruding section can move in a vertical direction, a slide section 12 which is provided with an inclined groove 122 which is inclined in a vertical direction with respect to a horizontal direction and a horizontal groove 123 which leads to each of the both ends of the inclined groove and which has a long hole in a horizontal direction, and where the protruding section is inserted to the inclined groove or the horizontal groove slidably in the horizontal direction, and a slide driving section that slides the slide section in a horizontal direction. The protruding section has an elastic section to which the pin is inserted and which is provided with a flange part at a rear end, and a cap part to which a front portion of the elastic section is inserted and which is provided with a flange part at a rear end. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an optical disc reproducing apparatus for reproducing data recorded on an optical disc.

  As a conventional optical disk reproducing apparatus, disk loading is performed for reproducing data recorded on an optical disk by moving a loader unit on which the optical disk is mounted into the housing and rotating the optical disk by a turntable provided in the housing. An optical disk reproducing apparatus having a mechanism is known (for example, see Patent Document 1).

  The optical disk reproducing device disclosed in Patent Document 1 includes a reproducing unit (a traverse system 27 in Patent Document 1) including a turntable for rotating an optical disk and an optical pickup for reproducing data recorded on the optical disk. One end of the reproducing unit is pivotally supported by the casing body, and the other end includes a pin (a pin unit 28 in Patent Document 1). The pin engages with a groove (cam groove 23 in Patent Document 1) provided in a slide portion (Slide lever A18 in Patent Document 1), and moves up and down by sliding the slide portion. Thereby, the reproduction | regeneration part can be moved up and down centering on the one end part pivotally supported by the housing | casing.

  As described above, in the optical disk reproducing device disclosed in Patent Document 1, first, the loader unit moves the optical disk into the housing, and then one end of the optical disk is pivotally supported from below the optical disk moved into the housing. After the playback unit raised and the turntable provided in the playback unit holds the optical disc, the turntable rotates the optical disc and the optical pickup reads the data recorded on the optical disc, thereby recording the data recorded on the optical disc. Is configured to play.

Japanese Patent Laid-Open No. 6-251481

  In a conventional optical disk reproducing apparatus as disclosed in Patent Document 1, a shaft protrudes horizontally from the left and right side surfaces of one end of the reproducing unit, and this shaft is supported by a bearing fixed to the housing. Thus, the one end of the reproducing unit is pivotally supported. For this reason, for example, when an optical disk having an uneven load is rotated by a turntable, the optical disk vibrates in the horizontal direction or the vertical direction due to the uneven load of the optical disk. At this time, the vibration generated from the optical disk is also transmitted to the optical pickup provided in the reproducing unit, and the data recorded on the optical disk cannot be read accurately. Further, if the reproducing unit is constantly vibrating due to vibration generated from the optical disc for a long time, the intermittent pickup may damage the optical pickup provided in the reproducing unit and other electronic components. Further, vibration generated from the optical disk is transmitted to the housing 2 via the reproducing unit 6, and vibration is also generated in the housing 2. When the housing 2 vibrates, the entire optical disk reproducing apparatus 1 vibrates and generates unnecessary noise. Also, the loader driving motor 5, the slide driving unit 15, the control unit, and the like provided in the housing 2. May be damaged by vibration.

  The present invention provides an optical disk reproducing apparatus for reproducing data recorded on an optical disk by moving a reproduction unit up and down, and can accurately reproduce data recorded on an optical disk even when an optical disk having an offset load is reproduced. Another object of the present invention is to provide an optical disk reproducing apparatus that can prevent unnecessary vibrations from occurring.

  The invention according to claim 1 of the present application is an optical disk reproducing apparatus, comprising: a housing; an opening opening on a front surface of the housing; and a loader portion including a disk mounting portion for mounting an optical disk. A loader driving means for moving the loader unit from the outside of the housing to the inside of the housing, and a pin protruding forward on the front surface of the optical disk moved into the housing by the loader driving means. A reproducing unit that reproduces recorded data; a projecting part that protrudes forward by inserting the pin; an elastic holding means that includes an elastic body and holds a rear portion of the reproducing unit by the elastic body; and A holding portion having a long hole portion that is inserted and movable in the up-down direction and an inclined groove that is inclined up and down with respect to the left-right direction and communicated with the left and right ends of the inclined groove, respectively, are long in the horizontal direction A horizontal groove having a slide portion that is inserted into the inclined groove or the horizontal groove and is slidable in the left-right direction, and a slide drive portion that slides the slide portion in the left-right direction, An elastic part that is formed of an elastic body and has a flange part that inserts the pin and forms an outer diameter larger than the inner diameter in the horizontal direction of the elongated hole part at the rear end; and a front part of the elastic part is inserted into the rear end. And a cap portion having a flange portion that forms an outer diameter larger than the inner diameter in the horizontal direction of the elongated hole portion.

  According to the present invention, in an optical disk reproducing apparatus that reproduces data recorded on an optical disk by moving the reproduction unit up and down, even when an optical disk having an offset load is reproduced, the data recorded on the optical disk is accurately reproduced. In addition, it is possible to provide an optical disc reproducing apparatus that can prevent unnecessary vibrations from occurring.

  Embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is used about the part same as the component shown by the prior art.

FIG. 1 is a top view showing an optical disk reproducing apparatus according to an embodiment of the present invention.
The optical disk reproducing apparatus 1 includes a housing 2, a loader unit 3, a guide unit 4, a loader driving motor 5, a reproducing unit 6, a projecting unit 7, a rubber bush 8, a base unit 10, a holding unit 11, a slide unit 12, and a slide guide. The unit 13, the slide drive unit 15, a clamper and spring described later, and a control unit (not shown) are provided.
In FIG. 1, the lower side is the front of the optical disc playback apparatus 1.

  The housing 2 forms a box shape and includes an opening 201 on the front surface. The loader unit 3 is a flat plate and includes a disk mounting unit 301 at the center. The disc mounting unit 301 includes a concave portion 302 on which an optical disc (not shown) can be placed on the upper surface, and a hole 303 in the central portion of the concave portion 302. The lower surfaces of the left and right portions of the loader unit 3 are each provided with a convex portion 304 protruding downward, and a rack gear 305 is provided inside the left convex portion 304 as viewed from above.

  The guide part 4 is fixed to the housing 2 in a state in which the guide part 4 is disposed at positions close to the left and right side surfaces of the loader part 3. The loader unit 3 is prevented from moving in the left-right direction because the guide unit 4 is close to the left and right side surfaces, and can move only in the front-rear direction with respect to the housing 2. The loader driving motor 5 includes a pinion 501 on a rotating shaft, and the pinion 501 meshes with the rack gear 305. The loader drive motor 5 rotates the pinion 501 in the clockwise direction or the counterclockwise direction under the control of the control unit. When the pinion 501 of the loader driving motor 5 rotates in the clockwise direction or the counterclockwise direction, the rack gear 305 engaged with the pinion 501 moves in the front-rear direction. Slide freely between the front of the body 2 and the inside of the housing 2.

  The reproducing unit 6 is provided inside the housing 2 and includes two pins 605 protruding forward on the front surface. The reproducing unit 6 includes holes 608 in the left and right parts of the rear part. The rubber bush 8 is provided with a groove in the outer peripheral portion, and is held in the hole 608 by inserting the inner wall portion of the hole 608 into the groove. The reproducing unit 6 includes a turntable 601, a spindle motor 602, an optical pickup 603, and a pickup driving unit 604 on the upper surface.

  The turntable 601 holds the optical disc transported into the housing 2 by the loader unit 3. The spindle motor 602 rotates the turntable 601 under the control of the control unit. The pickup driving unit 604 slides the optical pickup 603 in the axial direction of the spindle motor 602 under the control of the control unit. The optical pickup 603 reads audio data recorded on the optical disc.

  The holding unit 11 has a lower surface fixed to the housing 2 and is disposed at a position in front of the reproducing unit 6. The slide part 12 is disposed at a position in front of the holding part 11.

  2A and 2B are diagrams showing the configuration of the holding unit 11 and the slide unit 12, FIG. 2A is a front view showing the holding unit 11, and FIG. 2B is a front view showing the configuration of the holding unit 11 and the slide unit 12. FIG.

  As shown in FIGS. 1 and 2 (a), the holding portion 11 has a thin plate shape, and includes two long hole portions 111 penetrating in the front-rear direction and having a longitudinal direction in the vertical direction. The two long hole portions 111 are in a state in which two pins 605 provided on the front surface of the reproducing unit 6 are respectively penetrated.

  As shown in FIG.1 and FIG.2 (b), the slide part 12 forms the L-shape in which the lower part protruded ahead, and is provided with the tooth part 121 in the front part. The slide portion 12 includes two inclined grooves 122 that penetrate in the front-rear direction and are inclined upward in the right direction when viewed from the front, and are connected to the inclined grooves 122 at both ends of the inclined groove 122 in the horizontal direction. Are provided with a horizontal groove 123 and a horizontal groove 124 having long holes.

  The slide guide portion 13 includes a recess 131 below, and both ends are fixed to the housing 2. A portion protruding forward of the lower portion of the slide portion 12 is inserted into the concave portion 131 of the slide guide portion 13, and the movement of the slide portion 12 in the vertical direction is suppressed.

  Since the slide part 12 is prevented from moving in the vertical direction by the slide guide part 13, the slide part 12 is held between the slide guide part 13 and the housing 2, and as a result, can slide in the left-right direction.

  As shown in FIG. 1, the slide drive unit 15 includes a motor 151, a worm 152, a worm wheel 153, a pulley 156, and a belt 157. The motor 151 is fixed to the housing 2 and rotates the worm 152 in the clockwise direction or the counterclockwise direction under the control of a control unit (not shown). The worm wheel 153 is pivotally supported by the housing 2 in a state where it is engaged with the worm 152. The worm wheel 153 includes a pulley 154 on the same axis. The worm wheel 153 meshed with the worm 152 rotates as the worm 152 rotates. The belt 157 is hung between the pulley 154 and the pulley 156 and transmits the rotational force of the worm wheel 153 to the pulley 156. The pulley 156 includes a pinion 155 on the same axis, and the pinion 155 meshes with the tooth portion 121 of the slide portion 12. The pinion 155 transmits the rotational force of the worm 152 to the pulley 156 via the worm wheel 153, the pulley 154, and the belt 157, and rotates to move the tooth portion 121 of the engaged slide portion 12 in the right direction or the left direction. Slide.

  With this configuration, the slide drive unit 15 slides the slide unit 12 rightward or leftward as the motor 151 rotates in the clockwise direction or the counterclockwise direction.

  3 is a diagram showing the configuration of the protruding portion 7, the rubber bush 8, and the spring 9. FIG. 2A is a cross-sectional view taken along the line AA of the protruding portion 7 shown in FIG. 1, and FIG. It is BB sectional drawing of the rubber bush 8 shown and its peripheral part.

  As shown in FIG. 3A, the protruding portion 7 includes an elastic portion 70, a cap portion 71, and an E ring 72. The elastic portion 70 is a rubber member having a cylindrical shape, and includes a hole 701 penetrating in the front-rear direction at the center portion and a flange portion 702 at the rear end portion.

  The cap portion 71 is made of a hard steel member or plastic member having a cylindrical shape opened rearward. The cap portion 71 includes a hole 711 penetrating in the front-rear direction at the center portion and a flange portion 712 at the rear end portion.

  In the elastic part 70, the pin 605 of the reproducing part 6 is inserted into the hole 701, and the cap part 71 is inserted into the front part. At this time, the pin 605 is disposed in a length protruding forward from the hole 701 and the hole 711, and the E-ring 72 having an outer diameter larger than the inner diameter of the hole 711 is fitted to the tip portion, thereby being elastic. The part 70 and the cap part 71 are held.

  As described above, the protruding portion 7 has a long hole in the holding portion 11 in a state where the hole 701 of the elastic portion 70 covered with the cap portion 71 is inserted into the pin 605 and the E ring 72 is fitted in the tip portion of the pin 605. It will be in the state inserted in the horizontal groove | channel 124 of the part 111 and the slide part 12. FIG. At this time, the flange portion 702 of the elastic portion 70 and the flange portion 712 of the cap portion 71 are disposed with an outer diameter larger than the inner diameter in the horizontal direction of the long hole portion 111 of the holding portion 11.

  As shown in FIG. 3B, a rubber bush is fixed to the upper surface of the base portion 10 with an adhesive (not shown) on the upper surface of the spring 9 and held in the hole 608 with an adhesive (not shown) on the upper surface of the spring 9. 8 is fixed. Accordingly, the reproducing unit 6 is held by the rubber bush 8 and the spring 9, and becomes an elastic holding unit that holds the reproducing unit 6 by the elasticity of the rubber bush 8 and the spring 9.

  FIG. 4 is a diagram for explaining the operation process of the reproducing unit 6 and the slide unit 12 when the optical disk is loaded into the housing 2 by the loader unit 3, and FIG. FIG. 4 (b) is a side view of FIG. 4 (a), and FIG. 4 (c) is from the state of FIGS. 3 (a) and 4 (b). FIG. 4 (d) is a side view of FIG. 4 (c), showing a state in which the slide portion 12 is slid leftward when viewed from the front.

  FIG. 5 is a diagram for explaining the operation process of the reproduction unit 6 and the slide unit 12 when the optical disk is loaded into the housing 2 by the loader unit 3. FIG. 5 (a) is a diagram of FIG. FIG. 5B is a side view of FIG. 5A showing a state in which the slide portion 12 is further slid leftward when viewed from the front in the state 4D.

  As shown in FIG. 1, when a loading instruction signal is input to the control unit by an instruction button (not shown) in a state where the optical disk 20 is placed in the recess 302 of the loader unit 3 slid forward of the housing 2, the control is performed. The unit controls the loader driving motor 5 to slide the loader unit 3 into the housing 2. The loader driving motor 5 rotates the pinion 501 and slides the loader unit 3 on which the optical disk 20 is placed into the housing 2 as shown in FIG. 4B. At this time, as shown in FIG. 4A, the protrusion 7 held by the reproducing unit 6 is inserted into the horizontal groove 124.

  When a reproduction instruction signal is input to the control unit by an instruction button (not shown) from the state of FIGS. 4A and 4B, the control unit rotates the motor 151 shown in FIG. The slide unit 12 is controlled to slide leftward when viewed from the front. Under the control of the control unit, the slide drive unit 15 rotates the motor 151, rotates the pinion 155 via the worm 152, the worm wheel 153, and the belt 157, and the tooth portion 121 of the slide unit 12 meshed with the pinion 155. Slide to the left. Then, as shown in FIG. 4C and FIG. 4D, the protruding portion 7 inserted into the elongated hole portion 11 of the holding portion 11 and restrained from moving in the left-right direction is provided with the inclined groove 122 of the slide portion 12. The inner wall of the long hole portion 111 of the holding portion 11 is moved upward while moving the inner wall of the holding portion 11 in the right direction. Since the left and right holes 608 in the rear portion are held by the rubber bush 8 and the spring 9, the reproducing unit 6 moves up with the hole 608 as an axis when the protruding portion 7 moves upward.

  When the slide portion 12 further slides to the left, the reproducing portion 6 further rises around the hole 608 as shown in FIGS. 5A and 5B, and the turntable 601 is attached to the housing 2. It is inserted into the hole 21 of the optical disc 20 conveyed inside. The control unit performs control to lower the clamper 16 after the turntable 601 is inserted into the hole 21 of the optical disc 20. In the optical disk 20, the hole 21 is pinched by the turntable 601 and the clamper 16 when the clamper 16 is lowered.

  The turntable 601 rotates the optical disc 20 under the control of the control unit. The optical pickup 603 is slid in the radial direction of the optical disc 20 by the pickup driving unit 604 shown in FIG. 1 and reads data recorded on the optical disc 20. Data read by the optical pickup 603 is reproduced by a data reproduction circuit (not shown).

  As shown in FIG. 5A and FIG. 5B, when the optical disk 20 is rotated by the turntable 601 and data recorded on the optical disk 20 is reproduced, as shown in FIG. The rear side is held by the rubber bush 8 and the spring 9, and the front side is a state where the protruding portion 7 is inserted into the horizontal groove 123 of the slide portion 12.

  FIG. 6 is a side view showing the holding portion 11, the slide portion 12, the pin 605, and the protruding portion 7 in a state where the reproducing portion 6 is lifted as shown in FIGS. 5 (a) and 5 (b).

  As shown in FIGS. 5A and 5B, when the slide part 12 is slid leftward by the slide drive part 15 shown in FIG. 1, the protrusion 7 held by the pin 605 is held. It is located at the upper end of the long hole portion 111 of the portion 11 and is inserted into the horizontal groove 123 communicating with the inclined groove 122, and the hole 608 is held by the base portion 10 via the rubber bush 8 and the spring 9. It becomes the state. For this reason, for example, the optical disk 20 to be reproduced by the reproducing unit 6 has an offset load, and even if the optical disk 20 having the offset load is rotated by the turntable 601, the optical disk 20 vibrates horizontally or vertically. The elastic part 70 of the protruding part 7 and the rubber bush 8 and the spring 9 suppress the vibration of the reproducing part 6 by the respective elastic force, and the vibration of the reproducing part 6 is transmitted to the housing 2. Suppress. At this time, by providing the flange portion 702 and the flange portion 712 at the rear end portions of the elastic portion 70 and the cap portion 71, for example, even when the reproduction portion 6 vibrates in the front-rear direction, the front surface and the holding portion of the reproduction portion 6 It is possible to prevent the rear surface of 11 from coming into contact and the vibration of the reproducing unit 6 to be transmitted to the holding unit 11.

  As a result, the reproducing unit 6 vibrates unnecessarily due to vibrations generated from the optical disk 20 having an unbalanced load, and the optical pickup cannot read the data recorded on the optical disk accurately, or is transmitted from the optical disk. It is possible to prevent the optical pickup and other electronic components provided in the reproducing unit from being damaged by the intermittent vibration. Further, vibration generated from the optical disk is transmitted to the housing 2 via the reproducing unit 6, and vibration is generated in the entire optical disk reproducing apparatus 1 to generate unnecessary noise. It is possible to prevent the loader driving motor 5, the slide driving unit 15, the control unit, and the like from being damaged by vibration.

  As described above, the optical disk reproducing apparatus according to the present embodiment has the elastic force of the elastic part 70 provided in the protruding part 7 and the elastic force of the rubber bush 8 and the spring 9 even when vibration is generated from the optical disk 20 having an eccentric load. Thus, unnecessary vibration of the reproducing unit 6 can be suppressed, and unnecessary vibration can be prevented from occurring in the housing 2. In addition, the optical disk reproducing apparatus according to the present embodiment suppresses vibration generated from the optical disk 20 having, for example, an offset load by interposing the elastic portion 70 for suppressing vibration between the pin 605 and the cap portion 71. Compared to the configuration of a conventional optical disk reproducing apparatus in which an elastic member for performing the above is provided between the holding unit 11 and the slide unit 12 and the housing 2, the volume of the entire apparatus can be reduced. For this reason, the volume of the optical disk reproducing apparatus can be made smaller than that of a conventional optical disk reproducing apparatus in which the elastic member described above is provided between the holding part 11 and the slide part 12 and the housing 2.

  The optical disk reproducing apparatus of the present embodiment is configured to include the rubber bush 8 and the spring 9 at the rear of the reproducing unit 6 as means for elastically holding the rear of the reproducing unit 6. It is good also as a structure which raises / lowers the reproduction | regeneration part 6 so that the axis | shaft may protrude in a horizontal direction and the bearing which fixed this axis | shaft to the housing | casing may be supported. In this case, if an elastic member is interposed in the bearing portion, unnecessary vibration of the reproducing unit 6 due to vibration generated from the optical disk 20 having an offset load is suppressed, and unnecessary vibration is generated in the housing 2. Can be prevented.

1 is a top view showing an optical disk reproducing apparatus according to an embodiment of the present invention. FIG. 2A is a front view showing the holding unit 11 and FIG. 2B is a front view showing the configuration of the holding unit 11 and the slide unit 12. FIGS. 2A and 2B are diagrams showing the configuration of the protrusion 7, the rubber bush 8, and the spring 9. FIG. 2A is a cross-sectional view taken along line AA of the protrusion 7 shown in FIG. 1, and FIG. 2B is the rubber bush 8 shown in FIG. FIG. 4 is a cross-sectional view taken along the line B-B in the periphery thereof. The figure explaining the process of operation | movement of the reproducing part 6 and the slide part 12 when the optical disk is loaded in the inside of the housing | casing 2 by the loader part 3. FIG. The figure explaining the process of operation | movement of the reproducing part 6 and the slide part 12 when the optical disk is loaded in the inside of the housing | casing 2 by the loader part 3. FIG. The side view which shows the holding | maintenance part 11, the slide part 12, the pin 605, and the protrusion part 7 in the state which the reproduction | regeneration part 6 raised as shown to Fig.5 (a) and FIG.5 (b).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical disk reproducing apparatus, 2 housing | casing, 201 opening part,
3 loader section, 301 disc mounting section, 302 recess, 303 hole,
304 convex portion, 305 rack gear,
4 guide section, 5 loader drive motor, 501 pinion,
6 playback unit, 601 turntable, 602 spindle motor,
603 Optical pickup, 604 pickup drive unit, 605 pin, 608 hole,
7 Protruding part, 70 Elastic part, 701 hole, 702 collar part,
71 Cap part, 711 hole, 712 collar part, 72 E ring,
8 Rubber bush, 9 Spring, 10 Base part,
11 holding part, 111 long hole part,
12 slide part, 121 tooth part, 122 inclined groove, 123 horizontal groove, 124 horizontal groove,
13 slide guide, 131 recess,
15 slide drive unit, 151 motor, 152 worm, 153 worm wheel,
154 pulley, 155 pinion, 156 pulley, 157 belt,
16 clamper, 20 optical disc, 21 holes

Claims (1)

A housing,
An opening that opens to the front of the housing;
A loader driving unit that includes a loader unit including a disk mounting unit for mounting an optical disk, and moves the loader unit from the outside of the housing to the inside of the housing through the opening;
A reproducing unit that reproduces data recorded on an optical disc that is provided with a pin protruding forward on the front surface and is moved into the housing by the loader driving means;
A protrusion that inserts the pin and protrudes forward;
An elastic holding means that includes an elastic body and holds a rear portion of the reproducing unit by the elastic body;
A holding portion including a long hole portion into which the protruding portion is inserted and the protruding portion is movable in the vertical direction;
An inclined groove that is inclined up and down with respect to the left-right direction and a horizontal groove that communicates with the left and right ends of the inclined groove and has a long hole in the horizontal direction are inserted into the inclined groove or the horizontal groove. A sliding part that can slide in the left-right direction;
A slide drive unit that slides the slide unit in the left-right direction;
The projecting portion is formed of an elastic body and includes an elastic portion including a flange portion that inserts the pin and forms an outer diameter larger than a horizontal inner diameter of the elongated hole portion at a rear end, and a front portion of the elastic portion. And a cap portion having a flange portion that forms an outer diameter larger than the inner diameter in the horizontal direction of the elongated hole portion at the rear end.

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