JP2666752B2 - Optical disk recording and playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk recording / reproducing apparatus, and more particularly, to a method for fixing an optical head during transport of the optical disk recording / reproducing apparatus.

[0002]

2. Description of the Related Art Conventionally, in a recording / reproducing apparatus using an optical disk, an optical head reciprocates with respect to the optical disk to scan a track of the optical disk, and information is recorded on the optical disk by the optical head. Playing information from an optical disc.

[0003] That is, as shown in FIG.
Is reciprocated linearly along the guide shaft 9 to record information on or reproduce information from the optical disk 1 that is rotationally driven by the spindle motor 2.

When the optical disk recording / reproducing apparatus configured as described above is transported, a fixing pin mounted on the base 13 is fitted into a fitting hole of a fixing plate 11 mounted on a mounting table on which the optical head 3 is mounted. 12, the optical head 3 is fixed. In this case, a screw is formed in the fixing pin 12, and the fixing pin 12 is put in and out by turning a disk attached to a lower part of the fixing pin 12, and the fixing pin 12 is fitted into the fitting hole of the fixing plate 11. It is inserted.

[0005]

In the above-described conventional optical disk recording / reproducing apparatus, the optical disk is formed by inserting a fixing pin attached to the base into a fitting hole of a fixing plate attached to the mounting base of the optical head. Since the head is fixed, it is difficult to completely fix the optical head to the apparatus main body.

That is, if the fixing pin is not sufficiently fitted into the fitting hole of the fixing plate, the fitting of the fixing pin and the fitting hole is released, and the optical head is moved to the guide shaft when the apparatus body is moved. Sometimes they move along. In this case, parts are easily damaged due to vibration or impact due to the movement of the optical head.

Japanese Patent Application Laid-Open No. Hei 4-13266 discloses that the optical card carrier and the optical head carriage are locked when the power supply is turned off so that the optical card carrier and the optical head carriage are moved when the apparatus body is moved. There is disclosed a technology for preventing a machine from being accidentally moved and preventing a machine from being broken or damaged.

However, in the above technique, the lock arm and the lock lever are mechanically engaged with the optical card carriage and the optical head carriage by the elastic force of the spring, so that the lock arm and the lock lever and the optical card are transported. Due to mechanical errors between the table and the optical head carriage,
It is not possible to prevent the transfer table and the optical head carriage from moving by the mechanical error due to the movement of the apparatus main body. Therefore, when the above technique is used for an optical disk recording / reproducing apparatus, it is necessary to readjust the optical head disorder caused by an external force or an impact force due to the movement of the mechanical error accompanying the movement of the apparatus body.

Therefore, an object of the present invention is to solve the above-mentioned problems, to prevent the optical head from inadvertently moving when the apparatus main body is moved, and to prevent the optical head from being moved due to vibration or impact. It is an object of the present invention to provide an optical disk recording / reproducing apparatus which can prevent breakage of the optical head and can reduce readjustment work of the optical head after moving.

[0010]

SUMMARY OF THE INVENTION An optical disk recording / reproducing apparatus according to the present invention uses an optical head mounted on a mounting table which reciprocates linearly along a guide shaft installed on a base to transmit information to an optical disk medium. An optical disk recording / reproducing apparatus for performing recording and reproduction of the optical head, wherein the optical head is in contact with the mounting table at a fixed position of the optical head when the power to the apparatus main body is in an off state, and the optical head is moved with the movement of the apparatus main body. To
An elastic member that absorb such forces, the fixing member power to the apparatus main body to fix the optical head is pressed against the mounting base to the elastic member in the off state, in response to said off state of said power supply By driving the fixing member, the fixing
Pressing and releasing the mounting table against the elastic member by a member
And a driving unit for performing the removal .

In another optical disk recording / reproducing apparatus according to the present invention, in addition to the above-described structure, a supporting member for rotatably supporting the fixed member, and the mounting means when the power supply to the apparatus main body is off. An urging member for urging the fixed member in a direction in which the base is pressed against the elastic member.

Another optical disk recording / reproducing apparatus according to the present invention further comprises, in addition to the above configuration, a pin member provided on the mounting table and mounted in a direction perpendicular to the guide shaft. power supply to the body before in the off state
Said mounting platform at Rukoto pressing the serial fixing member to the pin member so that pressing the elastic member.

[0013]

When the power supply to the apparatus main body is turned off, the lock arm is rotated by the biasing force of the spring to apply a load to the lock pin, and the mounting base of the optical head is moved to the elastic body disposed on the base. Press and lock.

Thus, the external force and the impact force applied to the optical head by the movement of the mechanical error accompanying the movement of the apparatus main body can be absorbed by the elastic body. Therefore, the readjustment work of the optical head after the movement of the apparatus main body is reduced or unnecessary.

Therefore, it is possible to prevent the optical head from inadvertently moving when the apparatus main body is moved, to prevent damage to parts due to vibration, impact, etc. due to the movement, and to readjust the optical head after the movement. Is reduced.

[0016]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view of one embodiment of the present invention.
FIG. 2 is a side view of one embodiment of the present invention. In these figures, a spindle motor 2 is mounted on a base (not shown), and drives the optical disk 1 mounted on a shaft to rotate.

A pair of guide shafts 9 are installed on the base in parallel with each other, and a mounting table on which the optical head 3 is mounted is slidably mounted on the guide shafts 9. The mounting table reciprocates linearly along a guide shaft 9 by a linear motor (not shown).

The lock mechanism of the optical head 3 includes an elastic body 10 (for example, sponge or rubber) disposed near the spindle motor 2, a lock pin 5 planted on a mounting base of the optical head 3, and a base. A support plate 6 fixed to the base, a lock arm 4 rotatably supported by the support plate 6 and engaged with the lock pin 5, and a solenoid 7 engaged with the lock arm 4 and fixed to the support plate 6 And a spring 8 stretched between the lock arm 4 and the support plate 6.

FIG. 3 shows an optical head 3 according to an embodiment of the present invention.
It is an enlarged view which shows the lock mechanism of FIG. In the figure, a lock arm 4 is constantly urged by a spring 8 in a lock direction (clockwise).

The engagement surface of the lock arm 4 with the lock pin 5 is inclined by an angle θ with respect to the axis perpendicular to the optical disk 1. The lock arm 4 is rotated by the spring 8 in the locking direction. Receives the load f2.

Therefore, a load f1 is applied between the engagement surface of the lock arm 4 and the lock pin 5 by the load f2. However, since the mounting table of the optical head 3 can only move in the direction along the guide shaft 9, the load actually applied to the lock pin 5 is f3 (f3 = f2 / tan).
θ). The mounting table of the optical head 3 is pressed against the elastic body 10 and locked by the load f3.

That is, when the power to the apparatus main body is off, the power supply to the solenoid 7 is also turned off, and only the urging force of the spring 8 is applied to the lock arm 4, so that the load f2 is applied from the spring 8 to the lock arm 4. As a result, a load f3 is applied to the lock pin 5, so that the mounting table of the optical head 3 is pressed against the elastic body 10 and locked.

On the other hand, when the power to the apparatus main body is turned on,
Since the power supply to the solenoid 7 is also turned on, the solenoid 7 sucks and holds the lock arm 4 against the urging force of the spring 8. Therefore, the engagement state between the engagement surface of the lock arm 4 and the lock pin 5 is released, so that the mounting table of the optical head 3 can move freely along the guide shaft 9.

When the mounting base of the optical head 3 is locked, the mounting base of the optical head 3 is moved to a position in contact with the elastic body 10 by a linear motor, and then the power supply to the apparatus main body is turned off. The power supply to the optical head 7 is turned off, and the mounting table of the optical head 3 is pressed against the elastic body 10 by the lock arm 4 and locked.

As described above, when the power supply to the apparatus main body is turned off, the lock arm 4 is rotated by the urging force of the spring 8 to apply the load f3 to the lock pin 5, and the mounting base of the optical head 3 is mounted. By pressing and locking against the elastic body 10 provided on the base, the elastic body 10 can absorb the external force and the impact force applied to the optical head 3 by the movement corresponding to the mechanical error accompanying the movement of the apparatus main body. Therefore, the readjustment work of the optical head 3 after the movement of the apparatus main body can be reduced or made unnecessary.

Therefore, it is possible to prevent the optical head 3 from inadvertently moving during the movement of the apparatus main body, and to prevent damage or the like due to vibration or impact due to the movement, and to prevent the optical head 3 from moving. The subsequent readjustment of the optical head 3 can be reduced.

[0028]

As described above, according to the present invention, when the power supply to the apparatus main body is off, the mounting base of the optical head is pressed against the elastic member by the fixing member at the fixing position of the optical head and fixed. In addition, it is possible to prevent the optical head from inadvertently moving when the apparatus main body is moved, to prevent damage to parts due to vibration or impact due to the movement, and to prevent the optical head from being moved. There is an effect that the readjustment operation can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a side view of one embodiment of the present invention.

FIG. 3 is an enlarged view showing a lock mechanism of the optical head according to one embodiment of the present invention.

FIG. 4 is a diagram showing a lock mechanism of an optical head according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Optical disk 2 Spindle motor 3 Optical head 4 Lock arm 5 Lock pin 7 Solenoid 8 Spring 9 Guide shaft 10 Elastic body

Claims (4)

(57) [Claims] An optical disk recording / reproducing apparatus for recording / reproducing information on / from an optical disk medium by an optical head mounted on a mounting table which reciprocates linearly along a guide shaft installed on a base. When the power to the apparatus main body is off, the optical head is brought into contact with the mounting table at a fixed position of the optical head, and the optical head is moved along with the movement of the apparatus main body.
An elastic member that absorb Cal force, a fixing member power to the apparatus main body to fix the optical head is pressed against the mounting base to the elastic member in the off state, in response to said off state of said power supply By driving the fixing member, the fixing portion
Pressing and releasing the mounting table against the elastic member by material
An optical disk recording / reproducing apparatus comprising: a driving unit for performing 2. A supporting member for rotatably supporting the fixing member, and urging the fixing member in a direction of pressing the mounting table against the elastic member when a power supply to the apparatus main body is off. 2. The optical disk recording / reproducing apparatus according to claim 1, further comprising an urging member that performs the operation. 3. The apparatus according to claim 1, wherein the driving unit rotates the fixing member in a direction away from the mounting table against a biasing force of the biasing member when a power supply to the apparatus main body is on. The optical disk recording / reproducing apparatus according to claim 2, wherein: 4. A pin member disposed on the mounting table and attached in a direction orthogonal to the guide shaft,
Any of claims 1 to 3, characterized in that the power supply to the apparatus main body to the mounting base of the fixing member in Rukoto pressed against the pin member in the off state so as to press the elastic member An optical disc recording / reproducing apparatus according to any of the preceding claims.