JP2006120190A - Optical disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical disk device in which load on a solenoid, a release arm, and a reset arm of an eject-lock mechanism engaging a tray with a casing can be reduced, and reliability for a life of the eject-lock mechanism is therefore increased. <P>SOLUTION: The optical disk device includes: at least the casing 2; a tray 3 provided in the casing 2 so as to be freely housed therein or drawn out therefrom; the eject-lock mechanism engaging the casing 2 with the tray 3; and the release arm 15 constituting the eject-lock mechanism, wherein the release arm 15 is constituted of a plurality of members 15a, 15b, and the plurality of members 15a, 15b are each movable independently with respect to an attachment part of the tray 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an optical disc apparatus that performs at least one of recording and reproduction of information on an optical disc by an optical pickup.

  As optical disc apparatuses, CD-ROM / R / RW, DVD-ROM / RAM / R / RW, etc. have already been put into practical use, and application to various areas and development for high performance are being actively carried out. Particularly recently, along with the rapid market expansion of personal computers, the penetration rate of built-in optical disk devices in personal computers has increased. As a method for mounting an optical disk mounted on an electronic device, a method of pulling out a tray from a housing, attaching an optical disk to the tray, and mounting it again in the housing (hereinafter referred to as a tray method) is common. Hereinafter, the configuration of a conventional tray type optical disc apparatus will be described with reference to FIG.

  FIG. 7 is an external perspective view of a conventional optical disc apparatus. In FIG. 7, 1 is an optical disk device, 2 is a housing, 2a is an upper housing portion, 2b is a lower housing portion, 3 is a tray, 4 is an optical pickup module, 5 is a rail, 6 is a rail holding portion, and 7 is a A spindle motor, 7a is an optical disk mounting portion, 8 is a metal cover, 8a is an opening, 9 is a carriage, 10 is a bezel, 11 is an eject button, and 20 is an optical pickup.

  FIG. 7 is an external perspective view of a conventional optical disk apparatus. The optical disk apparatus 1 includes a housing 2 and a tray 3 held in the housing 2 so as to be freely retractable. The housing 2 has a bag shape in which a metal upper housing portion 2a and a lower housing portion 2b are combined, and the tray 3 protrudes and emerges from an opening of the housing 2. An optical pickup module 4 is attached to the tray 3 from the back side. Rails 5 are movably provided on both sides of the tray 3, and the rails 5 are held by rail holding portions 6 provided integrally with the tray 3. In FIG. 7, the rail 5 is provided only on one side, but a similar rail may be provided on the other side. The upper housing portion 2a and the lower housing portion 2b are firmly fixed to each other using a locking means and a spiral which are not shown.

  The optical pickup module 4 includes at least a spindle motor 7 that rotates the optical disk, a metal cover 8 that has an opening 8a from the spindle motor 7 to the outer periphery, and a carriage 9 that is partially exposed from the opening 8a. The carriage 9 is movably held by a plurality of guide shafts provided in the optical pickup module 4, and can be moved toward and away from the spindle motor 7 by a feed motor (not shown).

Reference numeral 10 denotes a bezel provided on the front surface of the tray 3, and the bezel 10 is configured to have a size enough to close the opening of the housing 2. The carriage 9 is equipped with a light source such as a high-power laser diode, various optical members, and an objective lens that forms a light spot on the optical disk. There is a fixed circuit board at the back of the housing 2, and a signal processing IC, a power supply circuit, and the like are mounted on the circuit board. A flexible printed circuit board that is electrically connected to circuit boards (not shown) provided on the tray 3 is formed in a substantially U shape, and an external connector is connected to a power / signal line provided in an electronic device such as a computer. Connected. Then, power is supplied into the optical disc apparatus 1 via this external connector, an external signal is guided into the optical disc apparatus, or an electric signal generated by the optical disc apparatus 1 is sent to an electronic device or the like. The bezel 10 provided on the front end surface of the tray 3 is provided with an eject button 11, and when the eject button 11 is pressed, the engagement portion provided on the housing 2 and the engagement provided on the tray 3 are engaged. The tray 3 can be pulled out from the housing 2 so that the optical disk can be attached and detached.

  FIG. 8 is a plan view showing an eject lock mechanism portion in the conventional optical disc apparatus, which is arranged in the back surface direction of the eject button 11 of the optical disc apparatus 1 shown in FIG. 12 is a solenoid, 13 is a movable piece, 14 is a reset arm, 15 is a release arm, 16 is a lock arm, 17 is an eject spring, 18 is a lock shaft, and 19 is an eject arm. FIG. 8 shows a state where the lock arm 16 is engaged with the lock shaft 18, and at this time, the tray 3 is in a closed state. In addition, when the suction of the movable piece 13 and the solenoid 12 is released by pressing the eject button 11, the release arm 15 rotates and the release arm 15 rotates the lock arm 16 through the contact portion with the lock arm 16. When the lock arm 16 is moved away from the lock shaft 18 by this, the lock is released and the tray 3 is opened.

  The solenoid 12 cannot move back to the initial position (reset state) after the operation of the movable piece 13 that is the operating portion is disengaged from the solenoid 12 (non-reset state). An operation to return to the reset state is required. Therefore, in general, the movable piece 13 is moved to the initial position (reset) by the operation of the user storing the tray 3 in the housing 2 by using the rotation of the reset arm 14 and the release arm 15 shown in FIG. To return to the (status).

  Hereinafter, the return operation of the eject lock mechanism will be described with reference to FIG.

  FIG. 9 is a diagram showing the return operation of the eject lock mechanism when the tray in the conventional optical disc apparatus is housed in the housing, and FIG. 9A shows that the movable piece 13 of the solenoid 12 returns to the reset state. FIG. 9B is a diagram illustrating a state in which the movable piece 13 of the solenoid 12 is returning to the reset state, and FIG. 9C is a diagram illustrating the state in which the movable piece 13 of the solenoid 12 is reset. It is the figure which showed the state which became the state. In FIG. 9, 12 is a solenoid, 13 is a movable piece, 14 is a reset arm, 15 is a release arm, 16 is a lock arm, 17 is an eject spring, 18 is a lock shaft, and 19 is an eject arm.

  As shown in FIG. 9A, when the tray 3 is housed in the housing 2 via the bezel 10 by the user, the lock shaft 18 contacts the reset arm 14 and the reset arm 14 rotates. Next, as shown in FIG. 9B, the rotational movement of the reset arm 14 is transmitted to the release arm 15, and the release arm 15 brings the movable piece 13 close to and in contact with the solenoid 12. And adsorb. Here, the state where the movable piece 13 and the solenoid 12 are attracted is shown in FIG.

  9A to 9C, when the operation of storing the tray 3 in the housing 2 is performed, the clearance between the tray 3 and the housing 2 is about 1 mm. The distance between the centers of the lock shafts 18, that is, the dimension A, increases or decreases from a predetermined dimension depending on the storage conditions of the tray 3.

  When the tray is stored under the condition that the dimension A is the largest, that is, the condition where the reset arm 14 is farthest from the lock shaft 18, the rotation angle of the reset arm 14 is reduced and the movable distance of the movable piece 13 is minimized. When the tray is stored under the condition that the dimension A is the smallest, that is, the condition where the reset arm 14 is closest to the lock shaft 18, the rotation angle of the reset arm 14 is large and the movable distance of the movable piece 13 is the largest. Become.

  Therefore, generally, the positional relationship between the movable piece 13 and the solenoid 12 is designed based on the case where the movable distance of the movable piece 13 is the shortest so that the lock arm 16 and the lock shaft 18 are engaged even in the worst state.

As a prior example, there is (Patent Document 1) and the like.
JP-A-9-106640

  However, in the conventional configuration, when the dimension A in FIG. 9 is the smallest, that is, when the movable distance of the movable piece 13 is the largest, the overstroke of the movable piece 13 after the movable piece 13 and the solenoid 12 are attracted. Also grows.

  For this reason, the life of the eject lock mechanism is shortened by an excessive crimping load applied to the solenoid 12 by the movable piece 13 generated by this overstroke and a load applied to the release arm 15 and the reset arm 14.

  The present invention solves such a conventional problem, and can reduce the load applied to the solenoid, release arm, and reset arm of the eject lock mechanism that engages the tray and the casing. An object of the present invention is to provide an optical disc apparatus having improved reliability for life.

  The present invention has been made in order to solve the above-described problems, and at least includes a housing, a tray provided in the housing so as to be stored or withdrawable, and an eject that engages the housing and the tray. A lock mechanism; and a release arm that constitutes the eject lock mechanism, wherein the release arm is constituted by a plurality of members, and the plurality of members are independently movable with respect to an attachment portion with the tray. An optical disc apparatus characterized by the above.

  According to the present invention, when an excessive crimping load due to the overstroke of the movable piece is applied, each member of the release arm composed of a plurality of members is attached to the tray and the attachment portion. By moving independently, it is possible to absorb the load applied to the solenoid, release arm and reset arm of the eject lock mechanism.

  As a result, it is possible to reduce the load applied to the solenoid, release arm, and reset arm of the eject lock mechanism that engages the tray and the housing, and to realize an optical disc apparatus that has improved reliability with respect to the life of the eject lock mechanism. Can do.

  The invention according to claim 1 comprises at least a housing, a tray provided in the housing so as to be freely housed or pulled out, an eject lock mechanism for engaging the housing with the tray, and the eject lock mechanism. The release arm is composed of a plurality of members, and the plurality of members are independently movable with respect to the attachment portion with the tray. Each member of the release arm composed of a plurality of members is independently movable with respect to the tray mounting portion, thereby absorbing the load applied to the solenoid, release arm and reset arm of the eject lock mechanism. be able to.

  As a result, it is possible to reduce the load applied to the solenoid, release arm, and reset arm of the eject lock mechanism that engages the tray and the housing, and to realize an optical disc apparatus that has improved reliability with respect to the life of the eject lock mechanism. Can do.

  According to a second aspect of the present invention, the eject lock mechanism includes a solenoid, a movable piece, a release arm, a lock arm, an eject spring, and a lock shaft. The movable piece is inserted into the solenoid, and the release arm is a movable piece. And the eject spring. When the release arm is rotated, the lock arm is rotated and the engagement with the lock shaft is released. The movable piece is inserted into the solenoid, the release arm is connected to the movable piece and the eject spring, and the release arm turns to turn the lock arm and engage the lock shaft. By releasing, the structure of the eject lock mechanism for engaging the tray and the housing can be facilitated.

  The invention according to claim 3 is characterized in that the release arm is divided into two in a direction substantially parallel to the main flat surface portion of the movable piece. Since the release arm is divided into two in a direction substantially parallel to the main flat portion of the movable piece, the connection structure between the release arm and the movable piece can be realized in a thin shape.

  The invention according to claim 4 is characterized in that both members of the two divided release arms are connected to a release arm spring and are movable in a direction substantially parallel to the main flat surface portion of the movable piece. . Since both members of the release arm divided into two are connected to the release arm spring, each member of the release arm constituted by a plurality of members is temporarily independent of the attachment portion with the tray. The movable direction of both the members of the release arm divided into two and the movement of the eject lock mechanism can be achieved by moving in a direction substantially parallel to the main plane portion of the movable piece. It becomes possible to make the movable direction of the piece the same, and it is possible to efficiently absorb an excessive crimping load applied to the solenoid due to an overstroke of the movable piece and a load applied to the release arm and the reset arm.

  The invention according to claim 5 is characterized in that the movable direction of the two divided release arms is a rotation direction with the center in the radial direction of the through hole provided in the release arm as a rotation axis. is there. The movable direction of the release arm divided into two is the rotational direction with the center of the radial direction of the through hole provided in the release arm as the rotational axis, so that the configuration of the present invention can be realized with a minimum space. .

(Embodiment 1)
Embodiment 1 of the present invention will be described below with reference to the drawings.

  FIG. 1 is an external perspective view of an optical disc apparatus according to Embodiment 1 of the present invention. In FIG. 1, 1 is an optical disk device, 2 is a housing, 2a is an upper housing portion, 2b is a lower housing portion, 3 is a tray, 4 is an optical pickup module, 5 is a rail, 6 is a rail holding portion, and 7 is a A spindle motor, 7a is an optical disk mounting portion, 8 is a metal cover, 8a is an opening, 9 is a carriage, 10 is a bezel, 11 is an eject button, and 20 is an optical pickup.

  FIG. 2 is a plan view showing the eject lock mechanism portion according to the first embodiment of the present invention, and the eject lock mechanism is arranged in the rear surface direction of the eject button 11 of the optical disc apparatus 1 shown in FIG. In FIG. 2, 12 is a solenoid, 13 is a movable piece, 14 is a reset arm, 15 is a release arm, 16 is a lock arm, 17 is an eject spring, 18 is a lock shaft, and 21 is a release arm spring.

  In FIG. 1, the housing 2 is configured in a bag shape by combining an upper housing portion 2a and a lower housing portion 2b. The upper housing part 2a and the lower housing part 2b are preferably firmly fixed to each other using a spiral or the like. The constituent material of the housing 2 is made of a metal material such as iron, iron alloy, aluminum, aluminum alloy, magnesium alloy, or a resin material. Moreover, the upper housing part 2a and the lower housing part 2b may be made of the same material or different materials. Moreover, the average thickness of each main plane part of the upper casing part 2a and the lower casing part 2b is between 0.2 mm and 1.6 mm, and when this average thickness is relatively thin, the upper casing part 2a and the lower housing | casing part 2b are comprised with a metal material, for example, are formed by press work etc. of a metal plate. When the average wall thickness is relatively large, the upper housing portion 2a and the lower housing portion 2b are made of a resin material or die cast (such as an aluminum alloy or a magnesium alloy). When the housing 2 is made of a resin material, the optical disk device 1 can be reduced in weight. Reference numeral 3 denotes a tray that is provided in the housing 2 so as to be freely movable. The tray 3 is composed of a resin frame, and an optical pickup module 4 is provided. The optical pickup module (PUM) 4 includes an optical pickup 20 constituting an optical system, a spindle motor 7 for rotating the optical disk, and a control circuit (not shown). The optical pickup 20 performs at least one of an operation of writing information on or reading information from the optical disc by irradiating the optical disc with light. The spindle motor 7 has an optical disk mounting portion 7a for mounting and rotating the optical disk. There are rail holding portions 6 on both sides of the tray 3, and both sides are fitted to the rails 5 so as to be slidable in the direction of drawing out the optical disk. The rail 5 is also fitted to rail guides provided on the inner surfaces of both sides of the housing 2 so as to be slidable in the direction of pulling out the optical disk, and the tray 3 can be pulled out of the housing 2 so that the optical disk can be attached and detached.

  There is a fixed control board at the back of the housing 2, and a signal processing system IC, a power supply circuit, and the like are mounted on the control board. A flexible printed circuit board that electrically connects control boards (not shown) provided on the tray 3 is formed in a substantially U shape, and an external connector is connected to a power / signal line provided in an electronic device such as a computer. Connected. Then, electric power is supplied into the optical disc apparatus 1 through the external connector, an electric signal from the outside is guided into the optical disc apparatus 1, or an electric signal generated by the optical disc apparatus 1 is sent to an electronic device or the like. To do. The bezel 10 provided on the front end surface of the tray 3 is provided with an eject button 11. By pressing the eject button 11, an engagement portion (not shown) provided in the housing 2 and the tray 3 are provided. The engagement with the provided engaging portion (not shown) is released.

  The bezel 10 provided on the front end surface of the tray 3 is provided with an eject button 11, and when the eject button 11 is pressed, the eject lock shaft 18 provided in the housing 2 shown in FIG. The engagement with the lock arm 16 provided in the is released.

  Next, details of the eject lock mechanism will be described with reference to FIG.

  The eject lock mechanism includes a solenoid 12, a movable piece 13, a release arm 15, a lock arm 16, an eject spring 17, and a lock shaft 18. The movable piece 13 is inserted into the solenoid 12, and the release arm 15 is movable. It is connected to the piece 13 and the eject spring 17, and when the release arm 15 is rotated, the lock arm 16 is rotated and the engagement with the lock shaft 18 is released.

FIG. 2 shows a state where the lock arm 16 is engaged with the lock shaft 18, and the tray 3 is closed at this time. Further, when the eject button 11 is pressed, the movable piece 13 is detached from the solenoid 12 by the spring force of the eject spring 17, the release arm 15 rotates, and the release arm 15 is locked to the lock arm 16 through the contact portion. When the lock arm 16 moves away from the lock shaft 18, the lock is released and the tray 3 can be pulled out.

  Next, the solenoid of the eject lock mechanism will be described with reference to FIG.

  FIG. 3 is a plan view of the solenoid of the eject lock mechanism according to Embodiment 1 of the present invention. FIG. 3A shows a reset state of the solenoid 12 and a state in which the tray 3 shown in FIG. FIG. 3B shows a state in which the solenoid 12 is not reset, and the tray 3 shown in FIG. 1 can be pulled out from the housing 2. In FIG. 3, 12 is a solenoid, 12a is a yoke, 12b is a magnet, 12c is a bobbin, 12d is a coil, 12e is a terminal, and 13 is a movable piece.

  The solenoid is composed of a yoke 12a, a magnet 12b, a bobbin 12c, and a coil 12d, and is generally used together with the movable piece 13 and the eject spring 17. In the reset state, the yoke 12a and the movable piece 13 are attracted by the magnetic force generated from the magnet 12b, and when the eject button 11 is pressed by the user, a voltage is applied to the terminal 12e of the eject lock mechanism, and the bobbin 12c is wound. A current flows through the coil 12d, a magnetic force is generated in a direction opposite to the magnetic force generated from the magnet 12b, and is combined with the tensile load of the eject spring 17, so that the movable piece 13 is detached from the yoke 12a and is not reset, that is, the tray 3 Shifts to a state where it can be pulled out from the housing 2. Once in the non-reset state, the movable piece 13 cannot be pulled to the yoke 12a only by the magnetic force generated from the magnet 12b even if the voltage is applied to the terminal 12e of the eject lock mechanism. Therefore, the transition from the non-reset state to the reset state is performed by an operation in which the user stores the tray 3 in the housing 2.

  Next, the release arm which is a characteristic part of the present invention will be described.

  FIG. 4 is an external view showing the connection between the release arm and the solenoid according to Embodiment 1 of the present invention, and FIG. 4A shows a state in which the release arm composed of a plurality of members is integrally movable. FIG. 4B is a diagram illustrating a state in which a part of a release arm composed of a plurality of members is independently movable. FIG. 5 is an external view showing the release arm according to the first embodiment of the present invention, and FIG. 5 (a) is a diagram showing a state in which the release arm composed of a plurality of members is integrally moved. FIG. 5B is a diagram showing a state in which a part of a release arm composed of a plurality of members is independently movable. 4 and 5, 12 is a solenoid, 13 is a movable piece, 15a is an upper release arm, 15b is a lower release arm, 15c is a through hole, and 21 is a release arm spring. Further, the case where the release arm is integrally movable means that the dimension B shown in FIGS. 4 and 5 is 0, and the case where a part of the release arm is independently movable is B. The case where the dimension is other than 0.

  The release arm 15 is composed of an upper release arm 15a and a lower release arm 15b that are divided into two substantially parallel to the main plane portion of the movable piece 13, and is a resin having a size of about 7 mm × 18 mm and a thickness of about 5 mm. It is formed by. Here, the term “substantially parallel” refers to a shape of about ± 5 ° with respect to the movable piece 13.

  The upper release arm 15a and the lower release arm 15b each have an arm portion, and the upper release arm 15a is further provided with a protrusion necessary for connection with a through hole provided in the movable piece 13. The protrusion to be provided is not limited to the upper release arm 15a, but may be the lower release arm 15b. In this case, the vertical structure of the release arm 15 needs to be reversed.

The release arm 15 includes a through hole of the upper release arm 15a and the lower release arm 1
A through-hole 15c formed by a through-hole 5b is provided, and an attachment shaft (projection) of the release arm 15 provided in the tray 3 is inserted into the through-hole 15c. Both the arm 15a and the lower release arm 15b rotate with the center in the radial direction of the through hole 15c provided in the release arm 15 as the rotation axis. Further, the upper release arm 15a and the lower release arm 15b are connected to the release arm spring 21 so that the upper release arm 15a and the lower release arm 15b can rotate together or only the lower release arm 15b can rotate. Has been.

  The release arm spring 21 is connected to the upper release arm 15a and the lower release arm 15b so that only the lower release arm 15b is movable when a certain rotational load is applied between the upper release arm 15a and the lower release arm 15b. Yes.

  Hereinafter, the return operation of the eject lock mechanism according to Embodiment 1 of the present invention will be described with reference to FIG.

  FIG. 6 is a diagram illustrating the return operation of the eject lock mechanism when the tray is housed in the housing according to the first embodiment of the present invention. FIG. 6 (a) is a state where the movable piece 13 of the solenoid 12 is in the reset state. FIG. 6B is a diagram showing a state where the movable piece 13 of the solenoid 12 is returning to the reset state, and FIG. 6C is a diagram showing the movable piece of the solenoid 12. It is the figure which showed the state which 13 was in the reset state. In FIG. 6, 12 is a solenoid, 13 is a movable piece, 14 is a reset arm, 15a is an upper release arm, 15b is a lower release arm, 16 is a lock arm, 17 is an eject spring, 18 is a lock shaft, 19 is an eject arm, 21 is a release arm spring.

  As shown in FIG. 6A, when the tray 3 is housed in the housing 2 via the bezel 10 by the user, the lock shaft 18 contacts the reset arm 14 and the reset arm 14 rotates. Next, as shown in FIG. 6B, the rotational movement of the reset arm 14 is transmitted to the release arm 15, and the release arm 15 brings the movable piece 13 close to and in contact with the solenoid 12. And adsorb. Here, the state in which the movable piece 13 and the solenoid 12 are attracted is shown in FIG.

  6A to 6C, when the operation of storing the tray 3 in the housing 2 is performed, the clearance between the tray 3 and the housing 2 is about 1 mm. The distance between the centers of the lock shafts 18, that is, the dimension A, increases or decreases from a predetermined dimension depending on the storage conditions of the tray 3.

  In the conventional optical disc apparatus, when the tray is stored under the condition that the dimension A shown in FIGS. 9A to 9C is maximized, that is, the condition where the reset arm 14 is farthest from the lock shaft 18, The rotational angle of 14 is reduced, and the movable distance of the movable piece 13 is minimized. When the tray is stored under the condition that the dimension A is the smallest, that is, the condition where the reset arm 14 is closest to the lock shaft 18, the rotation angle of the reset arm 14 is large and the movable distance of the movable piece 13 is the largest. Become. For this reason, in this case, the overstroke of the movable piece 13 after the movable piece 13 and the solenoid 12 are attracted also becomes large. The load applied to the arm 14 shortens the life of the eject lock mechanism.

However, in the first embodiment of the present invention shown in FIGS. 4 to 6, the release arm 15 that transmits force to the movable piece 13 is constituted by a plurality of members, and the upper release arm 15 a that is at least a part of the plurality of members. Since the lower release arm 15b is connected to the release arm spring 21, the upper release arm 15a and the lower release arm 15b move together unless a certain force is applied.

  First, the lower release arm 15 b receives the rotational movement from the reset arm 14. The lower release arm 15b is movable together with the upper release arm 15a, and brings the movable piece 13 closer to the solenoid 12 and comes into contact therewith. This is because the release arm spring 21 to which the upper release arm 15a and the lower release arm 15b are connected does not have a certain force within the range in which the movable piece 13 is movable.

  After the movable piece 13 comes into contact with and attracts the solenoid 12, the movable piece 13 stops moving. At this time, when the tray 3 is stored under the condition that the dimension A shown in FIGS. 6A to 6C is the smallest, that is, the condition where the reset arm 14 is closest to the lock shaft 18, In the case where the rotational angle becomes large, the movable distance of the movable piece 13 becomes the largest, and the movable piece 13 gives an excessive pressure bonding load to the solenoid 12 even after the movable piece 13 contacts and attracts the solenoid 12. Only the upper release arm 15a is movable and absorbs an excessive crimping load. When the tray 3 is accommodated and the occurrence of an excessive crimping load is stopped, the upper release arm 15a and the lower release arm 15b are integrated into the original state by the restoring force of the release arm spring 21.

  In this way, it is possible to absorb the excessive crimping load continuously generated after the movable piece 13 and the solenoid 12 are attracted by the independent movement of the upper release arm 15a and the lower release arm 15b.

  Therefore, the load applied to the solenoid, release arm, and reset arm of the eject lock mechanism that engages the tray and the housing can be reduced, and an optical disc apparatus with improved reliability with respect to the life of the eject lock mechanism can be realized. .

  In the present embodiment, the release arm 15 is divided into two in a direction substantially parallel to the main plane portion of the movable piece 13, but is not limited to being divided in two in a substantially parallel direction. No. In order to realize a thin connection structure between the release arm 15 and the movable piece 13, it is preferable that the release arm 15 is divided into two in a direction substantially parallel to the main plane portion of the movable piece 13.

  The release arm 15 is movable with the upper release arm 15a and the lower release arm 15b rotating about the radial center of the through hole 15c provided in the release arm 15 as a rotation axis. It is not limited to rotating with the center of the through hole 15c provided in the center in the radial direction as the rotation axis. Each member of the release arm 15 makes it easy to move independently and temporarily with respect to the mounting portion with the tray 3, and an excessive pressure load on the solenoid 12 due to an overstroke of the movable piece or a release arm. 15 and the reset arm 14 can be efficiently absorbed and the structure of the present invention can be realized in a minimum space, the release arm 15 can be moved by both the upper release arm 15a and the lower release arm 15b. It is preferable to rotate the center of the through hole 15c provided in 15 in the radial direction as a rotation axis.

  The present invention realizes an optical disc apparatus that can reduce a load applied to a solenoid, a release arm, and a reset arm of an eject lock mechanism that engages a tray and a casing, and has improved reliability with respect to the life of the eject lock mechanism. The present invention can be applied to an optical disc apparatus that records and / or reproduces information on / from an optical disc by an optical pickup.

1 is an external perspective view of an optical disc device according to Embodiment 1 of the present invention. The top view which shows the eject lock mechanism part in Embodiment 1 of this invention The top view of the solenoid of the eject lock mechanism in Embodiment 1 of this invention External view showing connection of release arm and solenoid in embodiment 1 of the present invention 1 is an external view showing a release arm according to Embodiment 1 of the present invention. The figure which shows the return operation | movement of the eject lock mechanism part when the tray in Embodiment 1 of this invention is accommodated in a housing | casing. External perspective view of a conventional optical disc apparatus A top view showing an eject lock mechanism in a conventional optical disc apparatus The figure which shows the return operation | movement of the eject lock mechanism part when the tray in the conventional optical disk apparatus is accommodated in a housing | casing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical disk apparatus 2 Housing | casing 2a Upper housing | casing part 2b Lower housing | casing part 3 Tray 4 Optical pick-up module 5 Rail 6 Rail holding part 7 Spindle motor 7a Optical disk mounting part 8 Metal cover 8a Opening 9 Carriage 10 Bezel 11 Eject button 12 Solenoid 13 movable piece 14 reset arm 15 release arm 15a upper release arm 15b lower release arm 16 lock arm 17 eject spring 18 lock shaft 19 eject arm 20 optical pickup 21 release arm spring

Claims (5)

Comprising at least a housing, a tray provided in the housing so as to be housed or pulled out, an eject lock mechanism that engages the housing and the tray, and a release arm that constitutes the eject lock mechanism, The release arm is constituted by a plurality of members, and the plurality of members are independently movable with respect to a mounting portion with the tray. The eject lock mechanism includes a solenoid, a movable piece, a release arm, a lock arm, an eject spring, and a lock shaft. The movable piece is inserted into the solenoid, and the release arm includes the movable piece and the eject. 2. The optical disk device according to claim 1, wherein the optical disk apparatus is connected to a spring, and the lock arm is rotated and the engagement with the lock shaft is released by rotating the release arm. The optical disc apparatus according to claim 1, wherein the release arm is divided into two in a direction substantially parallel to a main flat portion of the movable piece. 4. The member according to claim 1, wherein both members of the two divided release arms are connected to a release arm spring and are movable in a direction substantially parallel to a main flat portion of the movable piece. The optical disk device described. The movable direction of the two-divided release arm is a rotation direction with a radial center of a through hole provided in the release arm as a rotation axis. An optical disk device according to the above.

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