JP4698570B2 - Disk unit - Google Patents

Description

The present invention particularly relates to a disk device that performs recording or reproduction on a disk- shaped recording medium such as a CD or a DVD.

  A motor is generally used as the lock mechanism in the conventional disk device. However, in order to reduce the cost, a solenoid mechanism is often used instead of the motor.

When a solenoid is used, the lock mechanism can be made relatively simple, but depending on the structure of the mechanism, the movable piece may not be inserted in parallel to the bobbin.
When the movable piece is not inserted parallel to the bobbin, the movable piece may not be completely attracted to the attracting surface in the bobbin, and there is a problem that the lock is released by a slight impact.

SUMMARY OF THE INVENTION An object of the present invention is to provide a disk device capable of stably attracting a movable piece without changing the configuration of the solenoid itself.

According to a first aspect of the present invention, there is provided the disk device according to the first aspect, wherein the solenoid that attracts the movable piece to the suction surface in the bobbin, the release arm that attaches the movable piece, and the release arm to the position that attracts the movable piece to the suction surface A reset arm that rotates the lock arm, a lock pin that rotates the reset arm, a lock arm that is displaced by the rotation of the release arm and engages the lock pin , a casing, and a casing that can be pulled out from the casing. and trays, and bis attaching said solenoid to said tray, comprising a first rib and a second rib positioned on the side of the bobbin so as to sandwich the bobbin, the solenoid than an outer diameter of the screw It has a screw hole having a larger inner diameter in the moving direction of the movable piece by inserting the screw into the screw hole Align eclipsed with which Ri taken as strange ordinating said bobbin, said movable piece said moves towards the screw side by the suction surface of the bobbin, is formed by the second rib and the first rib The opening on the movable piece side is larger than the opening on the screw side .

  According to the present invention, even when the movable piece is inserted obliquely with respect to the bobbin, the angle of the bobbin can be changed, and the movable piece can be stably adsorbed on the adsorption surface in the bobbin.

BEST MODE FOR CARRYING OUT THE INVENTION

The locking device mounting method according to the first embodiment of the present invention includes a solenoid that attracts a movable piece to a suction surface in a bobbin, a release arm that attaches the movable piece, and a position where the movable piece is attracted to the suction surface. A reset arm that rotates the arm, a lock pin that rotates the reset arm, a lock arm that is displaced by the rotation of the release arm and engages the lock pin, a casing, and a tray that can be pulled out of the casing , a bis attaching a solenoid to the tray, and a first rib and a second rib positioned on the side of the bobbin so as to sandwich the bobbin, the solenoid has a screw hole having an inner diameter larger than the outer diameter of the screw , vignetting with the Ri taken as ordinating strange bobbin in accordance with the movement direction of the movable piece by inserting a screw into the screw hole, the movable piece Moves toward the scan side by the suction surface of the bobbin, the opening formed by the first rib and the second rib, the opening of the movable side is of the opening is larger than the screw side. According to this embodiment, even when the movable piece is inserted obliquely with respect to the bobbin, the angle of the bobbin can be changed, and the movable piece can be stably adsorbed on the adsorption surface in the bobbin.

A locking device according to an embodiment of the present invention will be described below.
FIG. 1 is a plan view of a principal part of a locking device according to the present embodiment, FIG. 2 is a plan view of a principal part showing a locked state of the device, and FIG. 3 is a side sectional view of the principal part of the device.
The locking device according to the present embodiment includes a solenoid 1 for attracting the movable piece 1c to the suction surface 1b in the bobbin 1a, a release arm 2 for attaching the movable piece 1c, a reset arm 3 for rotating the release arm 2, and a reset arm. 3, and a lock arm 5 that is displaced by the rotation of the release arm 2 and engages the lock pin 4.

The solenoid 1 is provided with a screw hole 1d for attaching the bobbin 1a to the base. The movable piece 1 c is formed in a U shape, and includes two suction projections and an engagement hole for the release arm 2. The bobbin 1a is formed by two cylindrical spaces into which the suction projections of the movable piece 1c are inserted, and has a suction surface 1b in the cylindrical space. The solenoid 1 has an opening of a bobbin 1a on one end side and a screw hole 1d on the other end side.
The release arm 2 includes a rotation shaft 2a that is rotatably attached to the base, a first arm 2b that is attached to the movable piece 1c, a second arm 2c that is pressed by the reset arm 3, and a rotation of the lock arm 5. And a third arm 2d for restricting movement. The first arm 2b, the second arm 2c, and the third arm 2d are attached so as to be rotatable about the rotation shaft 2a, and the first arm 2b, the second arm 2c, and The third arm 2d is always kept at the same angle. The first arm 2b has an engaging portion 2e that engages with the elastic member 6. The elastic member 6 urges the movable piece 1c in a direction that separates the movable piece 1c from the suction surface 1b (a counterclockwise direction around the rotation shaft 2a).
The reset arm 3 includes a rotation shaft 3 a that is rotatably attached to the base, a first protrusion 3 b that presses the second arm 2 c, and a second protrusion 3 c that is pressed by the lock pin 4. Yes. The first protrusion 3b and the second protrusion 3c are attached so as to be rotatable about the rotation shaft 3a, and the first protrusion 3b and the second protrusion 3d are always kept at the same angle. Yes.
The lock arm 5 includes a pivot shaft 5a that is pivotably attached to the base, a first projection 3b that contacts the third arm 2d, a second projection 3c that is pressed by the lock pin 4, and an elastic member. A third projection 5d that engages with the first projection 7 is provided. The first protrusion 5b, the second protrusion 5c, and the third protrusion 5d are attached so as to be rotatable about the rotation shaft 5a. The first protrusion 5b, the second protrusion 5c, and The third protrusion 5d is always kept at the same angle. The elastic member 7 biases the lock arm 5 in the counterclockwise direction around the rotation shaft 5a.

As shown in FIG. 3, the two screw holes 1d are each provided with a stepped screw 8, and the solenoid 1 is attached to the base by the stepped screw 8. The diameter of the stepped screw 8 is sufficiently small with respect to the inner diameter of the screw hole 1d and is mounted so that the solenoid 1 can be displaced relative to the base by the operation of the movable piece 1c.
Note that the stepped screw 8 may be attached only to any one of the plurality of screw holes 1d.
In the present embodiment, the stepped screw 8 is used for explanation. However, if the solenoid 1 can be displaced by a predetermined amount, it may be attached by a normal screw or pin.

Next, the operation of the locking device according to the present embodiment will be described.
First, in the state shown in FIG. 1, the lock pin 4 approaches the reset arm 3 and presses the second protrusion 3c. When the second protrusion 3c is displaced by the lock pin 4, the reset arm 3 rotates counterclockwise about the rotation shaft 3a. By this rotation of the reset arm 3, the first protrusion 3b displaces the second arm 2c. Due to the displacement of the second arm 2c, the release arm 2 rotates clockwise around the rotation axis 2a. By this rotation of the release arm 2, the first arm 2b and the third arm 2d rotate clockwise. The movable piece 1c is guided into the bobbin 1a by the rotation of the first arm 2b, and the movable piece 1c is adsorbed to the adsorption surface 1b. At this time, the directions of the movable piece 1c and the bobbin 1a do not coincide with each other. When the movable piece 1c comes into contact with the bobbin 1a, the solenoid 1 is displaced by the contact. Can be matched.
On the other hand, the lock arm 5 is always urged counterclockwise by the elastic member 7 about the rotation shaft 5a, so that the first protrusion 5b is rotated by the clockwise rotation of the third arm 2d. Rotates counterclockwise. Then, the lock arm 5 engages the lock pin 4 with the second protrusion 5c. FIG. 2 shows this state.

  The unlocking is performed by releasing the suction of the movable piece 1c to the suction surface 1b. When the movable piece 1c is detached from the suction surface 1b, the first arm 2b is rotated counterclockwise by the biasing force of the elastic member 6. That is, the release arm 2 is rotated counterclockwise about the rotation shaft 2a by the urging force of the elastic member 6. Therefore, since the lock arm 5 is rotated in the clockwise direction by the rotation of the third arm 2d, the lock pin 4 is released from the second protrusion 5c. When the lock pin 4 is released, the state shown in FIG. 1 is restored.

Next, a locking device according to another embodiment is shown in FIG. FIG. 4 is a plan view of an essential part of the locking device according to the present embodiment, which corresponds to FIG. Note that the same members as those in FIG. Further, in the following description, only differences from the embodiment of FIG. 1 will be described, and the basic operation is the same as that of the above embodiment, and the description thereof will be omitted.
In this embodiment, ribs 8a and 8b are formed on both sides of the bobbin 1a. In this embodiment, the displacement amount of the bobbin 1a, that is, the displacement of the solenoid 1 is regulated within a predetermined range by the ribs 8a and 8b, so that the bobbin 1a is displaced more than necessary so that the movable piece 1b is within the bobbin 1a. Can be prevented from being inserted.
When the maximum inclination angle of the movable piece 1b is 4 degrees, the inclination angle of the bobbin 1a by the ribs 8a and 8b is preferably regulated to 4 to 5 degrees.

A disk device equipped with the lock device according to the present embodiment will be described with reference to FIGS. FIG. 5 is a plan view of the main part showing when the tray of the disk apparatus according to this embodiment is pulled out, and FIG. 6 is a cross-sectional plan view of the main part showing when the tray is pulled into the apparatus main body.
The disk device according to the present embodiment is a type of device in which the tray 11 is pulled out with respect to the device main body (casing) 10. A traverse unit 11a is mounted on the tray 11, and a disk is placed on the traverse unit 11a. The traverse unit 11a includes a spindle motor 11b and a pickup 11c.
In this embodiment, the tray 11 serves as a base on which the solenoid 1 is attached, and the lock pin 4 is provided in the casing 10.
According to the present embodiment, the solenoid 1 is attached to the base tray 11 and the lock pin 4 is provided in the casing 10 into which the tray 11 is inserted, so that a stable locking mechanism for the tray 11 can be provided. .

The disk device of this embodiment can be used for various devices as a lock device using an existing solenoid mechanism.

The principal part top view of the locking device by a present Example The principal part top view which shows the locked state of the apparatus Cross-sectional side view of the main part of the device The principal part top view of the locking device by other Examples Main part plan view showing when the tray of the disk device equipped with the same device is pulled out Cross-sectional plan view of the main part showing when the tray of the disk device equipped with the same device is pulled into the main body of the device

1 Solenoid 1a Bobbin 1b Suction surface 1c Movable piece 1d Screw hole 2 Release arm 3 Reset arm 4 Lock pin 5 Lock arm 10 Casing

Claims (1)

A solenoid that attracts the movable piece to the suction surface in the bobbin;
A release arm for attaching the movable piece;
A reset arm that rotates the release arm to a position where the movable piece is attracted to the adsorption surface;
A lock pin for rotating the reset arm;
A lock arm that is displaced by rotation of the release arm and engages the lock pin ;
A casing,
A tray provided so that it can be pulled out of the casing;
A screw for attaching the solenoid to the tray;
Comprising a first rib and a second rib positioned on the side of the bobbin so as to sandwich the bobbin,
The solenoid has a screw hole having an inner diameter larger than the outer diameter of the screw, Ri taken as the bobbin is strange coordinated in accordance with the movement direction of the movable piece by inserting the screw into the screw hole with vignetting,
The movable piece moves toward the screw side and is adsorbed on the adsorption surface of the bobbin,
Wherein the first ribs second opening formed by the ribs, the disk device opening of the movable side is equal to or larger than the opening of the bis side.

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