JP4341657B2 - Optical disk device - Google Patents

Description

  The present invention relates to an optical disc apparatus, and more particularly to an optical disc apparatus provided with an optical pickup.

  2. Description of the Related Art Conventionally, an optical disc apparatus including an optical pickup that performs an operation of writing data to an optical disc or an operation of reading data from an optical disc is known (see, for example, Patent Documents 1 to 4).

  In Patent Documents 1 to 4, an optical pickup configured to be movable in a predetermined direction (a direction parallel to the recording surface of the optical disk) and a guide member for guiding the movement of the optical pickup in a predetermined direction are provided. An optical disc apparatus including the same is disclosed. In Patent Documents 1 to 4, the optical pickup is mounted on a predetermined chassis, and the guide member is fixed to the predetermined chassis on which the optical pickup is mounted. The optical disc is mounted on a turntable attached to a predetermined chassis.

  However, in the above Patent Documents 1 to 4, since the guide member is fixed to a predetermined chassis, there is a disadvantage that it is difficult to adjust the inclination angle of the guide member with respect to the recording surface of the optical disc. For this reason, when an assembling error or the like occurs in the manufacturing process of the optical disk apparatus, an optical pickup that moves in a direction parallel to the recording surface of the optical disk while being guided by the guide member may occur.

  Therefore, conventionally, there has been proposed an optical disc apparatus capable of adjusting the inclination angle of the guide member with respect to the recording surface of the optical disc.

  FIG. 7 is a plan view showing a structure around an optical pickup of a conventionally proposed optical disc apparatus. FIG. 8 is a cross-sectional view taken along line 150-150 in FIG. 9 is a cross-sectional view taken along the line 160-160 in FIG. 7, and FIG. 10 is a cross-sectional view taken along the line 170-170 in FIG. Next, a structure around the optical pickup of the conventionally proposed optical disc apparatus will be described with reference to FIGS.

  In the conventional optical disk apparatus, as shown in FIG. 7, a spindle motor 102 is attached to a predetermined area of the drive chassis 101, and a turntable 103 is attached to a rotation shaft 102 a of the spindle motor 102. A main guide member 104 and a sub guide member 105 are attached to the drive chassis 101. The main guide member 104 and the sub guide member 105 are constituted by round bar members.

  In the conventional optical disc apparatus, the inclination angle of the sub guide member 105 (main guide member 104) with respect to the recording surface 120a of the optical disc 120 is adjusted in the B direction (optical disc 120) at both ends of the sub guide member 105 (main guide member 104). This is performed by adjusting the position in the direction perpendicular to the recording surface 120a.

  Specifically, as shown in FIGS. 7 and 8, both ends of the sub guide member 105 are attached to the drive chassis 101 via adjustment screws 111. Further, at both ends of the sub guide member 105, one torsion coil spring 112 for urging both ends of the sub guide member 105 in the B direction (direction perpendicular to the recording surface 120a of the optical disc 120) is provided. It is inserted. Then, the inclination angle of the sub guide member 105 with respect to the recording surface 120a of the optical disc 120 is adjusted by adjusting the amount of deflection of the torsion coil spring 112 by adjusting the screwing amount of the adjusting screw 111. Further, the positions in the B direction (direction perpendicular to the recording surface 120 a of the optical disk 120) of both ends of the sub guide member 105 after adjusting the tilt angle are held by the biasing force of the torsion coil spring 112. The tilt angle adjusting mechanism of the main guide member 104 is the same as the tilt angle adjusting mechanism of the sub guide member 105 described above.

  As shown in FIG. 7, an optical pickup 106 configured to be movable in the A direction (direction parallel to the recording surface 120 a of the optical disc 120) is mounted on the drive chassis 101. The optical pickup 106 includes components such as an objective lens 107 for condensing laser light on the recording surface 120a of the optical disc 120, and a pickup base 108 to which the objective lens 107 is attached. Two bearing portions 108 a are provided on the main guide member 104 side of the pickup base 108. The main guide member 104 is inserted into the two bearing portions 108 a of the pickup base 108. On the other hand, one receiving portion 108 b is provided on the sub guide member 105 side of the pickup base 108. As shown in FIGS. 8 and 9, the receiving portion 108b of the pickup base 108 has two inner surfaces 108c arranged so as to face each other in the B direction (direction perpendicular to the recording surface 120a of the optical disk 120). It is formed in a U shape having 108d. A part of the sub guide member 105 is disposed inside the receiving portion 108b of the pickup base 108 and is in contact with one inner surface 108c of the receiving portion 108b.

  Further, as shown in FIG. 7, in the region on the main guide member 104 side of the drive chassis 101, a gear portion (not shown) connected to the main guide member 104 side of the pickup base 108 and the gear portion are connected. The feed motor 109 is attached. That is, the driving force of the feed motor 109 is transmitted to the pickup base 108 via the gear portion. In the conventional optical disc apparatus, the driving force of the feed motor 109 is transmitted to the pickup base 108, whereby the optical pickup 106 is moved in the A direction (direction parallel to the recording surface 120a of the optical disc 120). Further, the movement of the optical pickup 106 in the A direction (the direction parallel to the recording surface 120 a of the optical disk 120) is guided by the main guide member 104 and the sub guide member 105.

  Further, in the conventional optical disk apparatus, as shown in FIGS. 7, 8 and 10, the optical pickup 106 is placed between the sub guide member 105 and the pickup base 108 in the B direction (with respect to the recording surface 120a of the optical disk 120). A leaf spring 110 is provided for urging in the vertical direction. The leaf spring 110 is attached to the pickup base 108 and disposed at a position away from the receiving portion 108b. The leaf spring 110 urges the optical pickup 106 in the B direction (a direction perpendicular to the recording surface 120a of the optical disk 120), and thereby in the A direction (a direction parallel to the recording surface 120a of the optical disk 120). It has a function of suppressing the vibration of the optical pickup 106 that moves to the position.

Japanese Patent Laid-Open No. 7-235063 JP 2002-117634 A Japanese Patent Laid-Open No. 2004-22054 JP 2005-135463 A

  However, in the conventional proposed optical disc apparatus described above, the portion of the optical pickup 106 that contacts the sub guide member 105 and the portion of the optical pickup 105 that is biased by the leaf spring 110 are separated from each other. Cause inconvenience.

  That is, in the conventional optical disk device, as shown in FIG. 11, when the sub guide member 105 is adjusted to be inclined in the C direction, the urging force in the B direction applied from the leaf spring 110 to the optical pickup 106 increases. There arises a disadvantage that the large biasing force applied from the leaf spring 110 hinders the movement of the optical pickup 106 in the A direction. On the other hand, when the sub guide member 105 is adjusted to tilt in the direction opposite to the C direction, the biasing force in the B direction applied from the leaf spring 110 to the optical pickup 106 becomes small. There is a disadvantage that the vibration becomes large. As a result, in the conventional optical disc apparatus, when the inclination angle of the sub guide member 105 with respect to the recording surface 120a of the optical disc 120 is adjusted, the urging force of the leaf spring 110 applied to the optical pickup 106 is greatly deviated from a preset value. As a result, there is a problem that the optical pickup 106 malfunctions.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an optical disc apparatus capable of suppressing the occurrence of malfunction of an optical pickup. .

  In order to achieve the above object, an optical disc apparatus according to a first aspect of the present invention is provided along a drive chassis to which a turntable for rotating a disc-shaped recording medium is attached, and a direction parallel to the recording surface of the recording medium. A guide member that is attached to the drive chassis so as to extend and a receiving portion that is mounted on the drive chassis and contacts the guide member, and is reciprocated in a direction parallel to the recording surface of the recording medium while being guided by the guide member In the optical disc apparatus including the optical pickup that performs the above and the biasing member that suppresses the vibration of the optical pickup by biasing the optical pickup, the guide member can adjust the tilt angle with respect to the recording surface of the recording medium. The urging member is attached to the guide member. In addition, the optical pickup is formed so as to continuously extend in the reciprocating direction, and vibration of the optical pickup is suppressed by urging the receiving portion of the optical pickup that contacts the guide member. The biasing member includes a first biasing portion that biases the receiving portion of the optical pickup, and a second biasing portion that is disposed between the drive chassis and the guide member. The tilt angle of the recording medium with respect to the recording surface is adjusted by adjusting the deflection amount of the second urging portion of the urging member, and the receiving portions of the optical pickup are arranged so as to face each other. The first surface of the receiving portion of the optical pickup is in contact with the guide member, and the second surface of the receiving portion of the optical pickup is biased by the biasing member.

  In the optical disc device according to the first aspect, as described above, the guide member attached to the drive chassis is configured so that the tilt angle with respect to the recording surface of the recording medium can be adjusted, whereby the manufacturing process of the optical disc device is performed. Even if an assembling error or the like occurs, the inclination angle of the guide member with respect to the recording surface of the recording medium can be adjusted. Therefore, the light reciprocating in the direction parallel to the recording surface of the recording medium while being guided by the guide member It is possible to suppress the occurrence of malfunction of the pickup. In this case, the biasing member is attached to the guide member, and the receiving portion of the optical pickup that is in contact with the guide member is biased by the biasing member, so that the portion of the optical pickup that is in contact with the guide member and the bias of the optical pickup are The portion biased by the member can be brought closer. Therefore, even if the inclination angle of the guide member with respect to the recording surface of the recording medium is adjusted, the urging force of the urging member applied to the optical pickup (receiving portion) can be suppressed from fluctuating. Thereby, when the inclination angle of the guide member with respect to the recording surface of the recording medium is adjusted, the urging force of the urging member applied to the optical pickup (receiving portion) greatly deviates from a preset value. It is possible to suppress the inconvenience of the occurrence of the malfunction. Moreover, even if the optical pickup moves from a predetermined position to a position other than the predetermined position by using an urging member formed so as to continuously extend along the direction in which the optical pickup reciprocates, the urging member The urging of the optical pickup can be performed continuously. Further, by using an urging member having a first urging portion for urging the receiving portion of the optical pickup and a second urging portion for adjusting the tilt angle of the guide member, the tilt angle of the guide member can be adjusted. Since it is not necessary to provide a biasing member separately, it is possible to suppress an increase in the number of parts. An optical pickup including a receiving portion having a first surface and a second surface arranged to face each other is used, and the first surface of the receiving portion of the optical pickup is in contact with the guide member, and the optical pickup is used. By configuring the second surface of the receiving portion to be urged by the urging member, the urging member can be easily applied to the receiving portion of the optical pickup while the receiving portion of the optical pickup is in contact with the guide member. Can be energized. In addition, the portion that comes into contact with the guide member of the optical pickup and the portion that is urged by the urging member of the optical pickup can be easily brought close to each other.

  An optical disc apparatus according to a second aspect of the present invention is provided with a drive chassis to which a turntable for rotating a disc-shaped recording medium is attached, an inclination angle of the recording medium with respect to the recording surface, and a recording medium. A guide member attached to the drive chassis so as to extend along a direction parallel to the recording surface of the recording medium, and a receiving portion that is mounted on the drive chassis and abuts against the guide member. An optical pickup that reciprocates in a direction parallel to the recording surface, and an urging member that is attached to the guide member and suppresses vibration of the optical pickup by urging a receiving portion of the optical pickup that contacts the guide member. I have.

  In the optical disc device according to the second aspect, as described above, the guide member attached to the drive chassis is configured so that the tilt angle with respect to the recording surface of the recording medium can be adjusted, thereby manufacturing the optical disc device. Even if an assembling error or the like occurs, the inclination angle of the guide member with respect to the recording surface of the recording medium can be adjusted. It is possible to suppress the occurrence of malfunction of the pickup. In this case, the biasing member is attached to the guide member, and the receiving portion of the optical pickup that is in contact with the guide member is biased by the biasing member, so that the portion of the optical pickup that is in contact with the guide member and the bias of the optical pickup are The portion biased by the member can be brought closer. Therefore, even if the inclination angle of the guide member with respect to the recording surface of the recording medium is adjusted, the urging force of the urging member applied to the optical pickup (receiving portion) can be suppressed from fluctuating. Thereby, when the inclination angle of the guide member with respect to the recording surface of the recording medium is adjusted, the urging force of the urging member applied to the optical pickup (receiving portion) greatly deviates from a preset value. It is possible to suppress the inconvenience of the occurrence of the malfunction.

  In the optical disk device according to the second aspect, preferably, the biasing member is formed so as to continuously extend along a direction in which the optical pickup reciprocates. If comprised in this way, even if an optical pick-up moves to a position other than the predetermined position from a predetermined position, the urging | biasing with respect to the optical pick-up (receiving part) by an urging member can be performed continuously.

  In the optical disk apparatus according to the second aspect, preferably, the urging member is a first urging portion that urges the receiving portion of the optical pickup, and a second urging member disposed between the drive chassis and the guide member. The inclination angle of the guide member relative to the recording surface of the recording medium is adjusted by adjusting the amount of deflection of the second urging portion of the urging member. If comprised in this way, since it is not necessary to provide separately the urging member for adjusting the inclination-angle of a guide member, it can suppress that a number of parts increases.

  In the optical disk device according to the second aspect, preferably, the receiving portion of the optical pickup has a first surface and a second surface arranged so as to face each other, and the first of the receiving portions of the optical pickup is provided. The surface is in contact with the guide member, and the second surface of the receiving portion of the optical pickup is biased by the biasing member. If comprised in this way, the receiving part of an optical pick-up can be easily urged | biased with a biasing member, making the receiving part of an optical pickup contact | abut to a guide member. In addition, the portion that comes into contact with the guide member of the optical pickup and the portion that is urged by the urging member of the optical pickup can be easily brought close to each other.

  As described above, according to the present invention, it is possible to easily obtain an optical disc apparatus capable of suppressing the occurrence of malfunction of the optical pickup.

  FIG. 1 is a plan view showing a structure around an optical pickup of an optical disc apparatus according to an embodiment of the present invention. 2 is a cross-sectional view taken along line 50-50 in FIG. 1, and FIG. 3 is a cross-sectional view taken along line 60-60 in FIG. FIG. 4 is an enlarged view around the receiving portion of the optical pickup shown in FIG. FIG. 5 is a cross-sectional view taken along line 70-70 in FIG. FIG. 6 is a perspective view of a sub guide member that guides the optical pickup of the optical disc apparatus according to the embodiment shown in FIG. 1 (a state in which a leaf spring is attached to the sub guide member). First, the structure around the optical pickup of the optical disc apparatus according to the present embodiment will be described with reference to FIGS.

  In the optical disk device according to the present embodiment, as shown in FIG. 1, a spindle motor 2 having a rotation shaft 2a is attached to a predetermined region of a resin drive chassis 1. A turntable 3 on which an optical disk 20 such as a CD or a DVD is mounted is attached to the rotating shaft 2a of the spindle motor 2 so as to rotate together with the rotating shaft 2a. Then, when performing a data writing operation on the recording surface 20a of the optical disk 20 or a data reading operation from the recording surface 20a of the optical disk 20, the optical disk 20 mounted on the turntable 3 is rotated. The optical disk 20 is an example of the “recording medium” in the present invention.

  A main guide member 4 and a sub guide member 5 are attached to the drive chassis 1. The sub guide member 5 is an example of the “guide member” in the present invention. The main guide member 4 and the sub guide member 5 are opposed to each other with the turntable 3 (spindle motor 2) interposed therebetween, and extend along the A direction (a direction parallel to the recording surface 20a of the optical disc 20). Is arranged. Further, the main guide member 4 is constituted by a metal round bar member, and the sub guide member 5 is constituted by a metal plate member.

  Further, in the region between the main guide member 4 and the sub guide member 5 of the drive chassis 1, an optical pickup 6 configured to be movable in the A direction (a direction parallel to the recording surface 20a of the optical disc 20) is provided. It is installed. The optical pickup 6 has a function of performing a data writing operation on the recording surface 20 a of the optical disk 20 and a data reading operation from the recording surface 20 a of the optical disk 20. The optical pickup 6 includes components such as an objective lens 7 for condensing laser light on the recording surface 20a of the optical disc 20 and a pickup base 8 to which the objective lens 7 is attached. Although not shown, the components of the optical pickup 6 include a semiconductor laser for generating laser light and an actuator for finely moving the objective lens 7 in addition to the objective lens 7 and the pickup base 8.

  As shown in FIGS. 1 and 2, two bearing portions 8 a are integrally formed on the main guide member 4 side of the pickup base 8 at a predetermined interval. The round bar-shaped main guide member 4 is inserted into the two bearing portions 8 a of the pickup base 8. On the other hand, as shown in FIGS. 1, 3, and 4, one receiving portion 8 b is integrally formed on the sub-guide member 5 side of the pickup base 8. As shown in FIG. 5, the receiving portion 8b of the pickup base 8 has two inner surfaces 8c and 8d arranged so as to face each other in the B direction (direction perpendicular to the recording surface 20a of the optical disc 20). It is formed in a U shape. The inner surfaces 8c and 8d are examples of the “first surface” and the “second surface” in the present invention, respectively. A part of the plate-shaped sub guide member 5 is disposed inside the receiving portion 8b of the pickup base 8 and is in contact with one inner surface 8c of the receiving portion 8b.

  Further, as shown in FIG. 1, in a region on the main guide member 4 side of the drive chassis 1, a gear portion (not shown) connected to the main guide member 4 side of the pickup base 8 and a gear portion connected thereto. The feed motor 9 is attached. That is, the driving force of the feed motor 9 is transmitted to the main guide member 4 side of the pickup base 8 through the gear portion. In this embodiment, the driving force of the feed motor 9 is transmitted to the main guide member 4 side of the pickup base 8 so that the optical pickup 6 is in the A direction (the direction parallel to the recording surface 20a of the optical disk 20). Is reciprocated. Further, the reciprocating movement of the optical pickup 6 in the A direction (direction parallel to the recording surface 20 a of the optical disk 20) is guided by the main guide member 4 and the sub guide member 5.

  Here, in the present embodiment, as shown in FIGS. 3 to 6, the optical pickup 6 is urged toward the sub-guide member 5 in the B direction (direction perpendicular to the recording surface 20 a of the optical disk 20). A leaf spring 10 is attached. The leaf spring 10 is an example of the “biasing member” in the present invention. The leaf spring 10 biases the optical pickup 6 in the B direction (a direction perpendicular to the recording surface 20a of the optical disk 20), and thereby in the A direction (a direction parallel to the recording surface 20a of the optical disk 20). The optical pickup 6 that reciprocates has a function of suppressing vibration.

  Specifically, the leaf spring 10 has two urging portions 10a and 10b formed by bending a plate-like spring member. The urging portions 10a and 10b are examples of the “first urging portion” and the “second urging portion” in the present invention, respectively. A part of the urging portion 10 a of the leaf spring 10 is disposed inside the receiving portion 8 b of the pickup base 8. The other inner surface 8d of the receiving portion 8b of the pickup base 8 is urged in the B direction (a direction perpendicular to the recording surface 20a of the optical disc 20) by a part of the urging portion 10a of the leaf spring 10. .

  Moreover, in this embodiment, the urging | biasing part 10a of the leaf | plate spring 10 is formed so that it may extend continuously along A direction (direction in which the optical pick-up 6 reciprocates). For this reason, even if the optical pickup 6 moves from a predetermined position to a position other than the predetermined position, the biasing portion 10a of the leaf spring 10 continuously biases the inner surface 8d of the receiving portion 8b of the pickup base 8. It will be. The urging portion 10b of the leaf spring 10 is also formed so as to continuously extend along the A direction (the direction in which the sub guide member 5 extends).

  Moreover, the leaf | plate spring 10 has the U-shaped connection part 10c which connects the urging | biasing part 10a and the urging | biasing part 10b integrally. And the leaf | plate spring 10 is being fixed with respect to the sub guide member 5 when the connection part 10c is press-fit in the sub guide member 5. FIG. In a state where the leaf spring 10 is fixed to the sub guide member 5, the urging portion 10 a of the leaf spring 10 is disposed on the side opposite to the guide surface 5 a of the sub guide member 5, and the leaf spring 10 The urging portion 10 b is disposed on the guide surface 5 a side of the sub guide member 5.

  In the present embodiment, the main guide member 4 and the sub guide member 5 shown in FIG. 1 are each configured to be able to adjust the inclination angle of the optical disc 20 with respect to the recording surface 20a. The inclination angle of the main guide member 4 (sub-guide member 5) with respect to the recording surface 20a of the optical disc 20 is adjusted in the B direction (relative to the recording surface 20a of the optical disc 20) at both ends of the main guide member 4 (sub-guide member 5). By adjusting the position in the vertical direction).

  Specifically, as shown in FIG. 2, both ends of the main guide member 4 are attached to the drive chassis 1 via adjustment screws 11. Further, at both ends of the main guide member 4, one torsion coil spring 12 for biasing both ends of the main guide member 4 in the B direction (direction perpendicular to the recording surface 20 a of the optical disk 20) is provided one by one. It is inserted. The inclination angle of the main guide member 4 with respect to the recording surface 20a of the optical disk 20 is adjusted by adjusting the amount of deflection of the torsion coil spring 12 by adjusting the screwing amount of the adjusting screw 11. Further, the positions in the B direction (direction perpendicular to the recording surface 20 a of the optical disk 20) of both ends of the main guide member 4 after adjusting the tilt angle are held by the biasing force of the torsion coil spring 12.

  On the other hand, as shown in FIGS. 3 and 4, both ends of the sub guide member 5 are attached to the attachment portion 1 a of the drive chassis 1 via the adjusting screws 13. Further, the sub guide member 5 is in a state in which the guide surface 5a is urged in the B direction (direction perpendicular to the recording surface 20a of the optical disk 20) by the urging portion 10b of the leaf spring 10. The tilt angle of the sub guide member 5 with respect to the recording surface 20a of the optical disc 20 is adjusted by adjusting the amount of deflection of the biasing portion 10b of the leaf spring 10 by adjusting the screwing amount of the adjusting screw 13. Further, the positions in the B direction (direction perpendicular to the recording surface 20 a of the optical disk 20) of both ends of the sub guide member 5 after adjusting the tilt angle are held by the urging force of the urging portion 10 b of the leaf spring 10.

  In the present embodiment, the mounting portion 1 a of the drive chassis 1 is formed so as to have a surface that faces the guide surface 5 a of the sub guide member 5. The urging portion 10b of the leaf spring 10 attached to the sub guide member 5 urges the guide surface 5a of the sub guide member 5 in the B direction (direction perpendicular to the recording surface 20a of the optical disc 20). Further, the drive chassis 1 is disposed between the mounting portion 1 a of the drive chassis 1 and the guide surface 5 a of the sub guide member 5. Further, the sub guide member 5 and the leaf spring 10 are fastened together with an adjusting screw 13 to the mounting portion 1 a of the drive chassis 1.

  Next, the assembly operation of the optical disk apparatus according to the present embodiment (the operation of adjusting the tilt angle of the sub guide member 5 with respect to the recording surface 20a of the optical disk 20) will be described with reference to FIG. In the following description of the adjusting operation, a case where the sub guide member 5 is tilted in the direction C in FIG. 3 will be described. In the following description of the adjustment operation, of the two adjustment screws 13 shown in FIG. 3, the left adjustment screw 13 is the adjustment screw 13a and the right adjustment screw 13 is the adjustment screw 13b.

  First, from the state of FIG. 3, the amount of deflection of the biasing portion 10b of the leaf spring 10 on the adjustment screw 13a side is increased by adjusting the screwing amount of the adjustment screw 13a. On the other hand, by adjusting the screwing amount of the adjusting screw 13b, the amount of deflection of the urging portion 10b of the leaf spring 10 on the adjusting screw 13b side is reduced. As a result, the end of the sub guide member 5 on the adjustment screw 13a side moves in the B1 direction, and the end of the sub guide member 5 on the adjustment screw 13b side moves in the B2 direction. That is, the sub guide member 5 is inclined in the C direction.

  At this time, in this embodiment, the amount of deflection of the biasing portion 10a of the leaf spring 10 that biases the receiving portion 8b of the pickup base 8 hardly changes between before and after the tilt adjustment. That is, in this embodiment, the biasing force applied to the optical pickup 6 (the receiving portion 8b of the pickup base 8) from the biasing portion 10a of the leaf spring 10 before the tilt angle adjustment, and the biasing portion 10a of the leaf spring 10 after the tilt angle adjustment. The urging force applied to the optical pickup 6 is almost the same.

  In the present embodiment, as described above, the sub guide member 5 attached to the drive chassis 1 is configured so that the inclination angle of the optical disc 20 with respect to the recording surface 20a can be adjusted, so that in the manufacturing process of the optical disc apparatus. Even if an assembling error or the like occurs, the inclination angle of the sub guide member 5 with respect to the recording surface 20a of the optical disc 20 can be adjusted, so that the A direction (relative to the recording surface 20a of the optical disc 20) is guided while being guided by the sub guide member 5. It is possible to suppress the occurrence of malfunction of the optical pickup 6 that reciprocates in the parallel direction. In this case, the leaf spring 10 is attached to the sub guide member 5, and the receiving portion 8 b of the pickup base 8 that is in contact with the sub guide member 5 is urged by the leaf spring 10, thereby contacting the sub guide member 5 of the optical pickup 6. The contacting portion and the portion urged by the leaf spring 10 of the optical pickup 6 can be brought close to each other. Therefore, even if the inclination angle of the sub guide member 5 with respect to the recording surface 20a of the optical disk 20 is adjusted, it is possible to suppress fluctuations in the urging force of the leaf spring 10 applied to the optical pickup 6. Thereby, when the inclination angle of the sub guide member 5 with respect to the recording surface 20a of the optical disc 20 is adjusted, the urging force of the leaf spring 10 applied to the optical pickup 6 deviates greatly from a preset value. It is possible to suppress the occurrence of the inconvenience that the operation failure 6 occurs.

  Further, in the present embodiment, as described above, the urging portion 10a of the leaf spring 10 that urges the receiving portion 8b of the pickup base 8 extends continuously along the direction in which the optical pickup 6 reciprocates. By forming, even if the optical pickup 6 moves from a predetermined position to a position other than the predetermined position, the urging portion 10a of the leaf spring 10 can continuously urge the optical pickup 6.

  In the present embodiment, as described above, by using the leaf spring 10 having the urging portion 10a for urging the optical pickup 6 and the urging portion 10b for adjusting the tilt angle of the sub guide member 5, Since it is not necessary to separately provide an urging member for adjusting the tilt angle of the sub guide member 5, it is possible to suppress an increase in the number of parts.

  Further, in the present embodiment, as described above, the receiving portion 8b of the pickup base 8 is formed in a U shape having inner surfaces 8c and 8d disposed so as to face each other, and the receiving portion 8b of the pickup base 8 is also formed. The inner surface 8c of the pickup base 8 is in contact with the sub guide member 5, and the inner surface 8d of the receiving portion 8b of the pickup base 8 is urged by the urging portion 10a of the leaf spring 10. The receiving portion 8 b of the pickup base 8 can be urged by the urging portion 10 a of the leaf spring 10 while the receiving portion 8 b is in contact with the sub guide member 5. Further, the portion of the optical pickup 6 that contacts the sub guide member 5 and the portion of the optical pickup 6 that is biased by the leaf spring 10 can be easily brought close to each other.

  Moreover, in this embodiment, since the sub guide member 5 and the leaf | plate spring 10 can be fastened together with the adjustment screw 13, an assembly | attachment operation | work can be performed easily.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above embodiment, the sub-guide member side of the optical pickup is urged by the urging member. However, the present invention is not limited to this, and the main guide member side of the optical pickup is urged by the urging member. You may comprise so that it is possible. Further, both the sub guide member side and the main guide member side of the optical pickup may be configured to be urged by the urging member.

  Moreover, in the said embodiment, although the sub guide member which consists of a plate-shaped member was used, this invention is not restricted to this, The optical pick-up can be guided and the biasing member which urges | biases an optical pick-up is attached. If possible, a guide member made of a member having a shape other than a plate shape may be used.

  Moreover, in the said embodiment, although resin-made drive chassis was used, this invention is not restricted to this, You may use metal-made drive chassis.

1 is a plan view showing a structure around an optical pickup of an optical disc apparatus according to an embodiment of the present invention. FIG. 5 is a cross-sectional view taken along line 50-50 in FIG. It is sectional drawing along the 60-60 line of FIG. FIG. 4 is an enlarged view around a receiving portion of the optical pickup shown in FIG. 3. It is sectional drawing along the 70-70 line | wire of FIG. FIG. 2 is a perspective view of a sub guide member that guides an optical pickup of the optical disc apparatus according to the embodiment shown in FIG. 1 (a state in which a leaf spring is attached to the sub guide member). It is a top view which showed the structure of the optical pick-up periphery of the conventional optical disk apparatus. It is sectional drawing along the 150-150 line | wire of FIG. It is sectional drawing along the 160-160 line of FIG. It is sectional drawing along the 170-170 line of FIG. It is a figure for demonstrating the conventional problem.

Explanation of symbols

1 Drive chassis 3 Turntable 5 Sub guide member (guide member)
6 Optical pickup 8b Receiving part 8c Inner surface (first surface)
8d Inner surface (second surface)
10 Leaf spring (biasing member)
10a Energizing part (first energizing part)
10b Energizing part (second energizing part)
20 Optical disc (recording medium)
20a Recording surface

Claims (4)

Mounted on the drive chassis, a drive chassis to which a turntable for rotating a disk-shaped recording medium is attached, a guide member attached to the drive chassis so as to extend along a direction parallel to the recording surface of the recording medium An optical pickup that has a receiving portion that comes into contact with the guide member and reciprocates in a direction parallel to the recording surface of the recording medium while being guided by the guide member; and by urging the optical pickup In an optical disc device comprising an urging member for suppressing vibration of the optical pickup,
The guide member is attached to the drive chassis so that an inclination angle with respect to a recording surface of the recording medium can be adjusted.
The biasing member is attached to the guide member, and is formed so as to continuously extend along a direction in which the optical pickup reciprocates, and the optical pickup of the optical pickup that contacts the guide member It is configured to suppress vibration of the optical pickup by energizing the receiving portion,
The urging member includes a first urging portion that urges a receiving portion of the optical pickup, and a second urging portion that is disposed between the drive chassis and the guide member. The adjustment of the tilt angle with respect to the recording surface of the recording medium is performed by adjusting the amount of deflection of the second urging portion of the urging member,
The receiving portion of the optical pickup has a first surface and a second surface arranged so as to face each other, and the first surface of the receiving portion of the optical pickup is in contact with the guide member, 2. The optical disk apparatus according to claim 1, wherein the second surface of the receiving portion of the optical pickup is urged by the urging member. A drive chassis to which a turntable for rotating a disk-shaped recording medium is attached;
A guide member attached to the drive chassis so as to be capable of adjusting an inclination angle with respect to the recording surface of the recording medium and extending along a direction parallel to the recording surface of the recording medium;
An optical pickup mounted on the drive chassis, having a receiving portion that contacts the guide member, and reciprocating in a direction parallel to the recording surface of the recording medium while being guided by the guide member;
Wherein attached to the guide member, e Bei and inhibit biasing member vibration of the optical pickup by urging the receiving portion of said guide member and the optical pickup abutting,
The urging member includes a first urging portion that urges a receiving portion of the optical pickup, and a second urging portion that is disposed between the drive chassis and the guide member. The adjustment of the tilt angle of the recording medium with respect to the recording surface is performed by adjusting the amount of deflection of the second urging portion of the urging member .   3. The optical disc apparatus according to claim 2, wherein the urging member is formed so as to continuously extend along a direction in which the optical pickup reciprocates. The receiving part of the optical pickup has a first surface and a second surface arranged to face each other,
The first surface of the receiving portion of the optical pickup is in contact with the guide member, and the second surface of the receiving portion of the optical pickup is biased by the biasing member. 2. The optical disc device according to 2 or 3 .

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