JPH0831162A - Disk device - Google Patents

Abstract

PURPOSE:To obtain a disk device capable of stably recording and reproducing signals by suppressing propagation of vibrations from outside the device and rapidly attenuating the vibrations. CONSTITUTION:An objective lens 33a of an optical pickup 33 which is a signal recording and reproducing section is so arranged that the focusing direction and tracking direction of the objective lens are approximately aligned to a plane having the main vibration direction at the time of using the device as a normal. A deck section 102 having the optical pickup 33 is elastically supported into the main body of the device by a damper 104 formed by filling highly viscous fluid, such as silicone grease, into a bag-shaped hollow body consisting of a spring 103 and a soft material, such as rubber and is so arranged that the main vibration attenuation direction and the main vibration direction align approximately to each other. The device has an engaging member for engaging a holder 105 for holding a cartridge 101 housing a disk 5 and a cap 106 which is a part of a design to cover the holder, an engaging member for engaging the cap and the main body of the device and a deck section supporting and changing over means for selectively and elastically supporting the deck part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus using a disc-shaped recording medium, which is used in a situation where it is vibrated from outside the apparatus.

[0002]

2. Description of the Related Art FIG.
Perspective view showing a conventional disk device 1 shown in Japanese Patent Publication No.
FIG. 26 is an exploded perspective view showing the configuration of a conventional disk device. In the figure, 2 is a housing, 3 is a front panel which is a design surface of the apparatus, 5 is a disk-shaped recording medium (hereinafter referred to as “disk”) which is a signal recording medium, 8 is a vibration damping member made of rubber or the like, 7 Is a chassis supported by the housing 2 via a vibration isolator 8, 10 is a tray movable in the X-axis direction in the figure, and 13 and 14 are movable in the X-axis direction arranged on both left and right sides of the chassis 7. A moving member, 22 is a container carrying the disk 5, 28 is a base formed in a substantially U shape, and 29 is a vibration isolating member made of rubber or the like.

Reference numerals 30a and 30b are guide shafts, 31 is a bearing fitted to the guide shaft 30b and slidably movable in the axial direction, 33 is an optical pickup for reading a signal on the disk 5, and 33a is on the disk 5. In order to read out the signal of the disk 5 in the focus direction (Z-axis direction in the figure) and to follow the signal track spirally provided on the disk 5 in the radial direction of the disk 5 (hereinafter referred to as “tracking direction”).
Objective lens that can be moved (X-axis direction in the figure), 3
7 is arranged parallel to the guide shafts 30a and 30b,
A screw shaft for screwing a half nut (not shown) provided on the optical pickup 33 to move the optical pickup 33 in the radial direction of the disk 5, 45 is a turntable for mounting the disk 5, 46 Is a spindle motor for rotationally driving the turntable 45, and 52 is a pressing member that cooperates with the turntable 45 to clamp the disk 5.

The operation of the conventional disk device will be described below. In FIG. 25, the disc 5 is inserted through the slot 3 a provided in the front panel 3. Next, the disk 5 placed in the container 22 in FIG. 26 is pulled in the X-axis negative direction in the drawing together with the container 22, the tray 10 and the moving members 13 and 14, and the tray 10 is stopped on the turntable 45 at a predetermined position. The relative movement of the vertical groove 10f provided on the tray 10 and the stepped grooves 13d, 14d provided on the moving members 13, 14 causes the tray 10 and the disk 5 to move downward in the drawing (Z-axis negative direction). The disk 5 is placed on the turntable 45 and the pressing member 52
As a result, the disc 5 is pressed and held on the turntable 45.

A signal on the disk 5 is reproduced by an optical pickup 33 which is supported by guide shafts 30a and 30b fixed to a base 28 and is movable in the axial direction. At this time, the optical pickup 33
The objective lens 33a is controlled and driven in the focus direction, the distance between the disk 5 and the objective lens 33a is kept constant, and the objective lens 33a is controlled and driven in the tracking direction to emit laser light from the optical pickup 33. The light exactly follows the signal tracks on the disk 5.

[0006]

In the conventional disk device as described above, when it is used in a mobile device such as a vehicle-mounted device or a video movie, it is vibrated in the vertical direction (Z-axis direction) due to the unevenness of the road surface during use. To be done. At this time, the focus direction of the objective lens of the optical pickup, which is the signal reading unit as in the above device, is the direction perpendicular to the plane of the disc, and the moving direction of the objective lens and the main vibration direction coincide with each other. The position control becomes difficult, and the position of the objective lens becomes even more difficult because the disc easily vibrates.

Further, the vibration isolating member used in the above-mentioned conventional disk device is made of a flexible material such as rubber. However, a solid material such as rubber causes shock vibration or several hundred Hz.
Although it exhibits effective damping characteristics for the above vibrations, it cannot be expected to be very effective for vibrations at low frequencies below this.

Since the objective lens of the optical pickup, which is the signal reading section, is supported by a spring having a low spring constant, it is likely to resonate with vibration of a low frequency. Therefore, the conventional disk device as described above has a problem in use under vibration.

The present invention has been made to solve the above-mentioned problems, and when used under vibration, the optical pickup, the disk, etc. are attached and the vibration from the outside of the apparatus is transmitted to the base which is the mounting base. An object of the present invention is to obtain a disk device that suppresses the vibrations and quickly attenuates the vibrations even when the vibrations propagate to enable stable signal recording and reproduction.

[0010]

In the disk device according to the present invention, the focus direction and tracking direction of the objective lens of the optical pickup, which is a signal recording / reproducing unit, are normal to the main vibration direction when the device is used. The main body of the device is arranged so as to substantially coincide with the surface, and the deck part equipped with the optical pickup is a spring and a damper in which a bag-like closed hollow body made of a flexible material such as rubber is filled with a highly viscous fluid such as silicon grease. It is elastically supported by and is arranged so that the main vibration damping direction in which the viscous resistance generated by the damper becomes large and the main vibration direction substantially coincide with each other.

Further, a spring for urging the deck portion composed of a base, an optical pickup, etc. upward against gravity is provided above the center of gravity of the deck portion, and a spring for urging the deck portion in the gravity direction is provided. The spring is disposed below the center of gravity of the section, and the spring is arranged at a substantially neutral position of the damper so that the resultant force of the spring balances the gravity acting on the deck section.

Also, 2n (n ≧
3) The springs of 3) are arranged in the upper and lower direction, respectively, and the mounting portion on the chassis side can be moved in the direction of the action line of the spring force with respect to each spring, and actuators such as motors for driving the springs are mounted respectively. Is.

Also, 2n (n ≧
3) The springs of 3) are arranged in the upper and lower sides, respectively, and the mounting portions on the chassis side are movable with respect to the respective springs, and the cams engaging with these and the actuators such as motors for driving the cams are provided. Is.

A position detector for detecting the relative position between the deck and the chassis, an amplifier for amplifying this signal, an integrator for integrating this signal in the time axis direction, and a reference for generating a certain set constant voltage. A comparator for comparing the signal from the signal generator and the integrator with the reference signal is provided.

Further, an engaging member for engaging a holder for holding a cartridge for accommodating a disk and a lid which is a part of a design for covering the holder, and an engaging member for engaging the lid and the apparatus main body. A spring for elastically supporting the deck portion and a damper for suppressing vibration, a switching means for selectively elastically supporting the deck portion, and a moving means for moving the deck portion to the lid side when the cartridge is attached or detached. Is.

Further, a spring for elastically supporting the deck portion and a damper for suppressing vibration, and a means for switching between elastic support and fixed support of the deck portion are provided, and the deck portion is elastically supported only during signal recording, and during signal reproduction and The deck is fixedly supported when the disc is attached or detached.

[0017]

In the disk device constructed as described above, the main vibration direction and the focusing direction and the tracking direction of the objective lens of the optical pickup are substantially orthogonal to each other, so that the objective lens is hard to be vibrated by the vibration. Further, since the main damping direction of the vibration damping damper and the main vibration direction coincide with each other, the damping is quickly damped even when the deck portion is vibrated.

Further, the deck is supported against gravity, and when the deck is vibrated in a direction other than the main vibration direction, the deck is translated and the axes (X, Y, Z axes) are moved. Prevents rotational movement around.

Further, the mounting portion of the 2n springs supporting the deck portion on the chassis side is moved by the actuator to change the spring force.

Further, since the chassis-side mounting portions of the 2n springs supporting the deck portion are engaged with the cam, the mounting portions move in accordance with the movement of the cam to change the spring force.

Further, a signal from a position detecting element provided in the main body of the apparatus is amplified by an amplifier, this signal is integrated in a time axis direction for a predetermined period, and this signal is compared with a reference signal by a comparator, whereby the posture of the apparatus is determined. To detect.

Further, the holder for holding the disk and the lid, which is a part of the design of the device for covering the disc, disengage the engagement between the holder and the lid when elastically supporting the deck portion, and further the lid is attached to the device. When removing the cartridge from the device, the deck unit is moved to and fixedly supported by the deck unit moving unit and the deck unit support switching unit, and the holder and the lid unit are engaged with each other. Release the engagement with the device body.

Further, since the deck portion is supported by the support spring and the damper at the time of signal recording, the propagation of the vibration from the outside is suppressed and attenuated to stably record the signal, and the deck portion is fixed at the time of reproducing the signal and attaching / detaching the disc. It supports and prevents the deck part from colliding with the inside of the device when the posture of the device changes.

[0024]

【Example】

Example 1. FIG. 1 is a diagram showing a video movie disk device as an example of a mobile device according to a first embodiment of the present invention. In the figure, 101 is a cartridge for housing the disk 5, 102 is a deck portion including a base 28, an optical pickup 33 and the like, 103 is a spring for elastically supporting the deck portion 102, and 104 is a rubber for damping the deck portion 102. A damper having a bag-like closed hollow body made of a flexible material filled with a highly viscous fluid, 105 is a holder for holding the cartridge 101, 106 is a lid which is a part of the design for covering the holder 105, and 107 is a disc 5 A magnetic head for recording signals, and 108 is a magnetic head holder.

2, FIG. 3, FIG. 4, and FIG. 5 are a plan view, a front view, a side view, and a rear view, respectively, showing the supporting state of the deck of the first embodiment, and 109 supports the optical pickup 33. The guide shaft 110 guides the radial movement of the disc 5, 110 is a feed screw for restricting the rotation of the optical pickup 33 around the X axis, and 111 is a feed screw for moving the optical pickup 33 in the radial direction of the disc 5. A spindle motor that rotationally drives the turntable 45, 112 is a feed motor that rotationally drives the feed screw 110 to move the optical pickup 33 in the radial direction, and 113 is the deck unit 1.
The pin is fixed to 02 and fits in the central hole of the damper 104.

Next, the operation will be described. The signal reproduction method is performed in the same manner as the conventional device. The recording of the signal is performed by heating a predetermined position on the disk with laser light from the optical pickup 33 and applying a magnetic field by the magnetic head 107. When the disk device having such a structure is used, particularly when recording,
It is used in the posture shown in FIG.

In addition, the photographer often photographs while walking or on the vehicle, in which case vibration is applied to the device from the outside, and the main vibration direction is the vertical direction, which coincides with the Z-axis direction in the figure. To do. The supporting state of the deck portion 102 at this time is as shown in FIGS. 2 to 5, and the focus direction of the objective lens 33a of the optical pickup 33 is the Y direction in the drawing, the tracking direction is the X direction in the drawing, and the vibration directions are respectively. Since the 90 ° direction is different, the objective lens 33a is less likely to be vibrated, so that position control becomes easier and stable signal recording / reproduction becomes possible.

Further, the damper 1 on the line CC in FIG.
A cross section of No. 04 is shown in FIG. As shown in the figure, the damper 104 is formed by filling a bag-like closed hollow body made of a flexible material such as rubber with a highly viscous fluid such as silicon grease, and its vibration damping capacity is perpendicular to the pin 113 having a large viscous resistance. It has a characteristic that it is high in the in-plane direction and low in the axial direction of the pin 113, which has a low viscous resistance. Therefore, when the damper 104 is arranged as shown in the figure, the main vibration direction and the high damping direction of the damper 104 coincide with each other, so that the vibration of the deck portion 102 is quickly damped even if the device is vibrated and the deck portion 102 vibrates. It is a thing.

As in the first embodiment, the optical pickup 33
Excitation frequency when the focus direction and tracking direction of the objective lens 33a substantially coincide with the plane whose main vibration direction is the normal when the device is used, and when the focus direction and vibration direction of the objective lens 33a coincide with each other. FIG. 21 shows the relationship with the vibration acceleration at the signal reproduction limit. A solid line shows a case where the objective lens 33a is excited perpendicularly to the focus direction and a tracking direction, and a broken line shows a case where the objective lens 33a is excited in the focus direction. Figure 21
As compared with the case where the focus direction and the vibration direction of the objective lens 33a match, the focus direction and the tracking direction of the objective lens 33a are both 90 ° and the vibration direction.
Since the vibration acceleration at the signal reproduction limit is higher in the case of different values, the objective lens 33a is less likely to be vibrated by external vibration in the disk device shown in the present embodiment, and stable signal recording / reproduction is possible. It will be possible.

FIG. 22 shows the vibration transmission characteristic of the damper 104. In the figure, the solid line represents the relationship between the vibration frequency and the vibration transmissibility when the damper 104 is arranged so that the vibration direction is the in-plane direction perpendicular to the pin 113, and the broken line represents the vibration direction in the axial direction of the pin 113. 3 shows the relationship between the vibration frequency and the vibration transmissibility when the damper 104 is arranged in such a manner. Here, the vibration transmissibility is the ratio of the magnitude of the actual vibration in the deck section 102 to the magnitude of the vibration applied from the outside when the vibration is applied to the device from the outside.

From FIG. 22, the vibration transmissibility is lower when the damper 104 is arranged so that the vibration direction is in the in-plane direction perpendicular to the pin 113, and the deck portion is arranged when the damper 104 is arranged in this way. Even if 102 vibrates, deck 1
The vibration of 02 is quickly attenuated.

Further, in FIG. 23, the weight of the deck portion 102 is 1
Spring 1 for elastically supporting the deck portion 102 from 00 to 200 g
03 has a spring constant of 20 g / mm or less, the dynamic viscosity of the high-viscosity fluid filled in the damper 104 is 10,000 to 40,000 cSt (centistokes), and the spring constant due to the elasticity of the damper 104 itself is in the axial direction of the pin 113. 15 to 30 g / mm, 5 to 20 g / mm in the in-plane direction perpendicular to the pin 113, and the deck unit 10 when vibrating in the main vibration direction (Z direction)
The relationship between the vibration frequency and the vibration transmissibility in 2 is represented by a solid line. The broken line in the figure shows the relationship between the vibration frequency and the vibration transmissibility at the signal reproduction limit. From FIG. 23, it can be seen that under the above conditions, the value of the vibration transmissibility is within the signal reproduction limit in the entire frequency band of 10 to 200 Hz, and stable signal reproduction is performed.

Example 2. 6 and 7 are a plan view and a front view showing the second embodiment, and 114 is a support spring which is arranged above the center of gravity of the deck portion 102 and biases the deck portion 102 upward against gravity. A and 115 are deck parts 10
It is arranged below the center of gravity of 2 and the deck part 1
This is a support spring B that biases 02. Also, the support spring A1
The support spring B115 and the support spring B115 are arranged so that the resultant force of the spring force balances with the gravity acting on the deck portion 102 at the substantially neutral position of the damper 104. Although the second embodiment shows the case where four support springs A114 are used, the number of support springs A114 is not limited as long as it is three or more. Further, the number of supporting springs B115 is not limited as long as it is one or more. Also, the support spring A
114 and the support spring B115 may be the same spring.

Next, the operation will be described. The disk device configured in this way resists the gravity and causes the deck unit 102 to
Since the support spring A114 for urging the upper part and the support spring B115 for urging in the gravitational direction are arranged above and below the center of gravity of the deck part 102, respectively, they are applied in a direction deviated from the main vibration direction (Z-axis direction). Even when shaken, the deck 10
The rotational movement about the two axes (X, Y, Z axes) is suppressed, and the movement in the X axis and Y axis directions is also suppressed.
Since the posture of No. 2 is stable and the influence on the objective lens 33a is reduced, stable recording / reproducing of signals becomes possible.

In the second embodiment, FIGS. 6 and 7 show the case where four support springs A114 and one support spring B115 are used, but FIGS. 8 and 9 show the support springs A114 and B115. The case where the same number is shown is shown. In this case, the posture of the deck section 102 becomes more stable.

Example 3. FIG. 10 is a front view showing the configuration of the third embodiment. In the third embodiment, the device side spring hook of the support spring 103 supporting the deck portion 102 is movable in the axial direction of the spring. In the figure, 116 is a moving spring hook that is attached to one end of the support spring 103 and has a threaded portion inside, 117 is a guide that guides and supports the moving spring hook 116, and 118 is a screw that engages with the threaded portion of the moving spring hook. A rod 119 supplies a motor for supplying a driving force to the screw rod 118, and a motor 120 receives a signal from a manual changeover switch (not shown) or an attitude detector (not shown).
19 is a system controller for controlling rotation of 19. In the third embodiment, the support springs 103 are provided in the upper and lower four, as in FIGS. 8 and 9.

In the disk device configured as described above, each motor 119 is driven by a signal from the system controller 120 according to the attitude of the device, and thereby the screw rod 118 is rotationally driven and moved to be screwed into the screw rod 118. The spring hook 116 is guided and moved in the axial direction of the spring 103 by the guide 117 to change the spring force of each spring 103. As a result, the neutral position of the deck section 102 can be kept constant regardless of the posture of the device, and the movable space of the deck section 102 can be kept small when elastically supporting the deck section 102, which is small. It is possible to obtain an apparatus capable of stable recording and reproduction of signals.

Although the spring hook 116 is moved in the axial direction of the spring by the motor in the third embodiment, another actuator such as a solenoid may be used.

Embodiment 4 FIG. In the third embodiment, the support spring 10
The device-side fixed ends of No. 3 are driven by independent actuators, respectively, but in the fourth embodiment, a cam driven by a motor and a rotatable spring hook that engages with the cam are provided. FIG. 1 is a perspective view showing the configuration of the fourth embodiment, and FIGS. 11 and 12 are mechanism conceptual diagrams showing the configuration and operation of the fourth embodiment. In the figure, reference numerals 121 to 128 denote rotatable spring hooks, 121a to 128a denote hook portions for suspending the support spring 103, 121b to 128b denote engagement pins, and 12
9 is a rotation fulcrum of the spring hooks 121 to 128, 130 to 1
37 is a cam groove with which the engagement pins 121b to 128b are engaged, 138 is a rack portion, and 139 is a cam portion 128 to 1.
37, a slider having a rack portion 138, 140 a pinion meshing with the rack portion 138, 141 a pinion 14
It is a motor that drives 0. In the fourth embodiment, as shown in FIGS. 8 and 9, four support springs 103 are used for each of the upper and lower sides, and each support spring 103, spring hooks 121 to 124, and cam grooves 130 to. Another pair of support springs 103, spring hooks, and cam grooves (groove shapes are all different) are present on the inner side of 133.

The operation of changing the spring force of the support spring 103 in the disk device constructed as described above will be described below. Figure 11 shows the device in an upright position (Z axis positive direction is up)
In the figure showing the case of using the above, the upper four support springs 103 in the figure (the two inner springs are not shown) have a large spring force,
The lower four support springs 103 (two inner springs are not shown) have a small spring force. From this state, place the device in the horizontal position (Y
When the axial positive direction is changed to (down) and used, the spring force of the two support springs 103 on the upper back side is decreased and the spring force of the two support springs 103 on the lower front side is increased. The operation of changing the spring force will be described using the case of the lower support spring 103.

First, a change in the attitude of the apparatus is detected by a manual switch or an attitude detector (not shown),
The signal from the system controller 120 causes the motor 141
Drive. And the rack 1 that meshes with the pinion 140
When the slider 38 moves from the point A to the point B, the slider 13
9 moves leftward in the figure. Then, as shown in FIG. 12, the spring hook 123 engaging with the cam groove 132 rotates counterclockwise in the drawing around the rotation fulcrum 129, and the cam groove 133.
The spring hook 124 that engages with rotates clockwise to increase the spring force of the support spring 103. At the same time spring hooks 121, 1
Similarly, the support spring 103 (not shown) of the spring hooks 125 and 126 located on the far side of the member 22 also reduces the spring force to support the deck portion 102. As a result, the neutral position of the deck section 102 can be kept constant even if the posture of the apparatus is changed, and the deck section 1 is elastically supported when the deck section 102 is elastically supported.
The movable space of 02 can be kept small, and a compact device capable of stable signal recording and reproduction can be obtained. In addition, the cam grooves 130 to 137 of the fourth embodiment have 6
The number of corresponding postures may be larger or smaller than that of the directional postures.

Example 5. FIG. 13 is a diagram showing an example of the attitude detector of the fifth embodiment. 142 to 144 are magnetized perpendicularly to the surface facing the position detecting element, and the position detecting element has the same distance within the moving range of the deck section 102. A magnet having a projected area in which the magnetic flux penetrating the position detecting element hardly changes when moved by, and 145 to 147 are Hall elements 148 to 1 that are position detecting elements whose output voltage changes according to the strength of the magnetic flux.
50 is an amplifier for amplifying the signals from the Hall elements 145, 146, 147, 151-153 are integrators, 1
Reference numerals 54 to 156 are reference signals and reference numerals 157 to 159 are comparators.

The detection operation will be described below by taking the position detection in the Y-axis direction as an example. The magnetic flux of the magnet 143 acts on the hall element 146. When the magnet 143 approaches the hall element 146, the magnetic flux penetrating the hall element 143 increases, so that the output voltage from the hall element 146 increases and the magnet 143 moves away. The output voltage drops. First, a case will be described in which the deck unit 102 is in the upright state (the Z-axis positive direction is up) and is located at the neutral position. If the deck 102 is stationary,
The signal from the Hall element 146 is amplified by the amplifier 149, integrated by the integrator 152 for a predetermined time in the time axis direction, and compared with the reference signal 155 by the comparator 158. At this time, since the deck section 102 is located at the neutral position, the difference between the two signals is almost zero. Further, even when the deck section 102 is vibrating, the output from the Hall element 146 is leveled by the integrator 152, and the difference from the reference signal 155 becomes almost zero.

Next, the deck section 102 is rotated by 90 °,
In the horizontal state (the positive direction of the Y-axis is downward), the action direction of gravity changes and the force balance of the support spring 103 is lost, and the deck 102 moves in the positive direction of the Y-axis and the positive direction of the Z-axis. At this time, since the distance between the magnet 143 and the Hall element 146 increases, the output voltage of the Hall element 146 drops. As a result, a difference is generated between the reference voltage of the reference signal 155 and the reference voltage, and movement of the deck section 102 in the Y direction is detected by this potential difference.
Then, the X direction and the Z direction are similarly detected. Needless to say, the position can be detected even when the deck 102 is vibrating. The above signals are sent to the system controller 1
The posture of the device is detected by processing by 26. In the fifth embodiment, the magnet and the hall element are used for the attitude detection, but a magnet and a magnetoresistive element, or a light emitting element and a light receiving element may be used.

Example 6. FIG. 1 is a perspective view showing a disk device elastically supporting a deck portion according to a sixth embodiment, and FIG. 24 is a perspective view showing the structure of a mechanism for attaching and detaching a cartridge mounting mechanism of this disk device and a lid forming a part of the design of the device. 14, FIG. 15, and FIG. 16 are mechanism conceptual diagrams showing the configuration and operation of the mechanism for attaching and detaching the cartridge mounting mechanism and the lid which is a part of the design of the apparatus according to the sixth embodiment. Show significance.

[0046]

[Table 1]

In the figure, 160 is an engagement pin A provided on the lid 106, 161 is an engagement pin B provided on the holder 105, 162 is a drive lever, and 162a is a drive pin A provided on the drive lever 162. , 162b are drive pins B provided on the drive lever 162, 163 is a slider A,
164 is a chuck A, 165 is a slider B, 166 is a chuck B, and 167 is a reversing lever.

Reference numeral 168 is a slider A163 and a slider B1.
A spring 169 suspended between 65 and a slider C;
70 is a cam groove having an open portion 170a at one end, 171 is a cam A, 172 is a rack portion provided on the slider C169, 173 is a guide, 174 is a pinion that meshes with the rack portion 172, 175 is a motor that drives the pinion 174, 176 is an engaging portion, 177 is an engaging pin C, 178 is an engaging portion, 179 is an opening spring, 180 is a rotatable lock lever, and 181 is a cam B provided on a slider C169.
Is.

The operation of connecting the cartridge mounting mechanism of the disk device and the lid 106 will be described below. First, the lid 106
14 is positioned by the engaging portion 176 of the lid body 106 and the engaging pin C177 on the apparatus side as shown in FIG.
The engaging portion 178 of 169 engages with the engaging pin A160 and is fixed to the apparatus. In addition, the deck 102 and the holder 1
05, the pin 113 of the deck 102 is a slider C16.
Since it is located at the open portion 170a of the cam groove 170 of No. 9, it is elastically supported by the support spring 103 (state of FIG. 1).

When a cartridge discharge switch (not shown) is operated, a slider C169 is displayed as shown in FIG.
Moves in the Z-axis positive direction, the lock lever 180 engaged with the cam B181 rotates, and together with the cam groove 170, the deck unit 1
The pin 113 of No. 02 is held, the deck part 102 and the holder 105 are fixed, and they are moved upward (Y axis negative direction).

When the slider C169 further moves, the drive pin A16 engaged with the cam 171 as shown in FIG.
2a causes the drive lever 162 to rotate counterclockwise in the drawing, the slider A163 to move in the negative direction of the Z axis, and the slider B165 to move to the Z direction via the reversing lever 167 engaged with this.
Move in the positive axis direction. Then, the chuck A164 provided on the slider A163 and the chuck B166 provided on the slider B165 sandwich the engaging pin B161 provided on the holder 105, and at the same time, the engaging portion 178 provided on the slider C169 is provided on the lid 106. Engagement pin A160
Cancel.

When the locking member (not shown) for locking the holder 105 is released, the lid body 106 and the holder 105 are integrally flipped up by the opening spring 179 as shown in FIGS. The cartridge 101 can be inserted and removed freely. In this way, the holder 105 for holding the cartridge 101 and the lid body 106 forming a part of the design of the apparatus and the lid body 106 and the apparatus main body can be engaged and released freely. Double insertion, prevent dust from entering the inside of the device, and
Since it is not necessary to provide a wasteful space between the cartridge and the lid 106, and the device thickness in the Y-axis direction can be reduced, a compact and highly reliable device can be obtained.

When the holder 105 is flipped up, the slider A
163 and the drive pin B162b of the drive lever 167 are disengaged, but the slider A163 and the slider B165 are always urged in the direction sandwiching the engagement pin B by the spring 168. Also, the separation of the holder 105 and the lid 106 is
The reverse operation is performed.

Example 7. In the seventh embodiment, the present invention is applied to a video movie. In such a device, the posture during recording is constant and the posture during reproduction is indefinite, and the device is mainly vibrated during recording. Therefore, the deck portion is elastically supported only at the time of recording, and the deck portion is integrally fixed to the apparatus at the time of reproduction and attachment / detachment of the cartridge.

Next, the operation will be described. FIG. 19 is a side view showing a supporting state of the deck portion 102 during signal recording,
At this time, the pin 113 of the deck portion 102 is a slider C169.
Since it is located at the open portion 170a of the cam groove 170, it is elastically supported by the support spring 103 and the damper 104. During reproduction, the recording magnetic head 107 is flipped up by a magnetic head drive mechanism (not shown) as shown in FIG.
By further separating, the slider C169 is moved in the positive direction of the Z axis so that the pin 113 is restrained by the cam groove 170 and the lock lever 180 to fix the deck portion 102 to the device. In this way, since the deck portion is elastically supported only during signal recording, stable signal recording is possible with a simple configuration, and an inexpensive and highly reliable device can be obtained.

[0056]

Since the present invention is constructed as described above, it has the following effects.

The base, which is the device base, is arranged so that the focus direction and the tracking direction of the objective lens of the optical pickup substantially coincide with the plane perpendicular to the main vibration direction when the device is used, and a rubber for damping the vibration. Since the main damping direction and the main vibration direction of the damper, which is filled with a highly viscous fluid such as silicon grease, is placed in a bag-shaped closed hollow body made of flexible material such as the objective lens due to external vibration. Is difficult to vibrate, and the vibration can be quickly damped even when the deck part vibrates, so that stable signal recording / reproducing is possible.

Since the support spring A for urging the deck portion upward and the support spring B for urging the deck portion in the gravity direction are respectively arranged above and below the center of gravity of the deck portion, the main vibration direction (Z-axis direction). Even when it is vibrated in the direction deviated from, it suppresses the rotational movement of the deck around each axis (X, Y, Z axes),
Furthermore, since the movement in the X-axis and Y-axis directions is also suppressed, the attitude of the deck section is stabilized, and the influence on the objective lens is reduced, so that stable signal recording / reproduction is possible.

Further, since the spring hook of the support spring of the deck portion can be moved, the neutral position of the deck portion can be kept constant even when the posture of the device changes, and when the deck portion is elastically supported. The movable space of the deck part can be kept small, and a small and stable signal recording / reproducing device can be obtained.

Further, since the spring hook of the support spring of the deck portion is driven by one motor and the cam, the position change of the deck portion is suppressed even when the posture of the apparatus is changed, and the deck portion is elastically supported. Moreover, the movable space of the deck can be reduced, and stable signal recording / reproduction can be performed with an inexpensive and small device.

Further, since the posture of the device can be automatically detected, the supporting state of the deck portion can be automatically changed according to the posture of the device, and a device with good usability can be obtained.

Further, since the holder for holding the cartridge and the lid which is a part of the design of the apparatus and the lid and the apparatus main body can be engaged and released freely, the double cartridge of the cartridge is used for recording / reproducing a signal on / from the disc. Insertion and dust are prevented from entering the inside of the device, and there is no need to provide a wasted space between the cartridge and the lid, and the device thickness in the Y-axis direction can be reduced, so it is compact and reliable. Higher equipment can be obtained.

Further, since the deck portion is elastically supported only during signal recording, stable signal recording is possible with a simple structure, and an inexpensive and highly reliable device can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a disk device according to first and sixth embodiments of the present invention.

FIG. 2 is a plan view showing a supported state of a deck portion according to the first embodiment.

FIG. 3 is a front view showing a supported state of a deck portion according to the first embodiment.

FIG. 4 is a side view showing a supported state of a deck portion according to the first embodiment.

FIG. 5 is a front and back view showing a supporting state of the deck portion according to the first embodiment.

FIG. 6 is a plan view showing a supported state of a deck portion according to the second embodiment of the present invention.

FIG. 7 is a front view showing a supported state of a deck portion according to a second embodiment.

FIG. 8 is a plan view showing a supported state when the deck portion of the second embodiment is supported by the same number of support springs A and support springs B.

FIG. 9 is a front view showing a supporting state when the deck portion of the second embodiment is supported by the same number of support springs A and support springs B.

FIG. 10 is a front view showing a configuration of a deck portion according to a third embodiment of the present invention.

FIG. 11 is a front view showing a supporting state of a deck portion when the Z-axis positive direction of the disk device according to the fourth embodiment of the present invention is up.

FIG. 12 is a front view showing a supported state of a deck portion when a disk device of a fourth embodiment is turned down in a Y-axis positive direction.

FIG. 13 is a configuration diagram showing an example of a detection device for detecting the attitude of a disk device according to a fifth embodiment of the present invention.

FIG. 14 is a configuration diagram showing an example of a coupling mechanism of a holder and a lid of a disk device according to a sixth embodiment of the present invention, and a mechanism concept showing a state in which the holder and the lid are separated and the deck portion is elastically supported. It is a figure.

FIG. 15 is a configuration diagram showing an example of a coupling mechanism between a holder and a lid of a disk device according to a sixth embodiment, showing a state in which the holder and the lid are separated and the deck part is moved to the lid and fixedly supported. It is a mechanism conceptual diagram shown.

FIG. 16 is a configuration diagram showing an example of a coupling mechanism of the holder and the lid of the disc device in the sixth embodiment, in which the deck portion is moved to the lid side and fixedly supported, and the holder and the lid are joined.
It is a mechanism conceptual diagram which shows the state which the cover body and the apparatus main body separated.

FIG. 17 is a side view showing the cartridge attaching / detaching operation according to the sixth embodiment, showing a state in which the holder and the lid are coupled and the holder is closed.

FIG. 18 is a side view showing a cartridge attaching / detaching operation according to the sixth embodiment, showing a state in which the holder and the lid are combined and the holder is opened.

FIG. 19 is a side view showing a state in which the deck portion is elastically supported at the time of signal recording in Embodiment 7 of the present invention.

FIG. 20 is a side view showing a state where the deck section is fixedly supported at the time of signal reproduction in Example 7.

FIG. 21 is a graph showing the relationship between the vibration frequency and the vibration acceleration at the signal reproduction limit.

FIG. 22 is a graph showing a vibration transfer characteristic of a damper.

FIG. 23 is a characteristic diagram showing the relationship between the vibration frequency and the vibration acceleration when vibration is applied in the main vibration direction in Example 1.

FIG. 24 is a perspective view showing an example of a configuration of a coupling mechanism for a holder and a lid of a disc device according to a sixth embodiment.

FIG. 25 is a perspective view showing a conventional disk device.

FIG. 26 is an exploded perspective view showing the configuration of a conventional disk device.

[Explanation of symbols]

5 discs, 33 optical pickups, 33a objective lens, 45 turntables, 101 cartridges,
102 deck, 103 spring, 104 damper, 1
05 holder, 106 lid, 109 guide shaft, 110 feed screw, 111 spindle motor, 1
12 feed motor, 113 pin, 114 support spring A,
115 Support Spring B, 116 Moving Spring Hook, 117
Guide, 118 screw rod, 119 motor, 120
System controller, 121-128 spring hook,
121a-128a Hook part, 121b-128b
Engagement pin, 130 to 137 cam groove, 138 rack portion, 139 slider, 140 pinion, 141 motor, 142 to 144 magnet, 145 to 147 hall element, 148 to 150 amplifier, 151 to 153 integrator, 154 to 156 reference signal 157 to 159 Comparator, 160 Engagement pin A, 161 Engagement pin B, 1
62 drive lever, 162a drive pin A, 162b
Drive pin B, 163 Slider A, 164 Chuck A, 165 Slider B, 166 Chuck B, 167
Reversing lever, 168 spring, 169 slider C, 1
70 cam groove, 170a release part, 171 cam A, 1
72 rack, 173 guide, 174 pinion,
175 motor, 176, 178 engaging portion, 177 engaging pin C, 179 releasing spring, 180 lock lever, 181 cam B.

Claims (7)

[Claims] 1. A disk-shaped signal recording medium is irradiated with a laser emitted from an optical pickup to heat it, and a magnetic field is applied to the heating portion from the outside to record a signal on the recording medium. In a disc device for irradiating a recording portion of a medium with a laser and reproducing a recording signal from the returned light, a deck portion provided with the above-mentioned optical pickup has a focusing device and a tracking direction of an objective lens of the optical pickup. It is arranged so that the vibration direction that mainly occurs during use is almost coincident with the surface that is the normal line, and the deck part is enclosed in a bag-shaped closed hollow body made of a spring and a flexible material such as rubber and has a high viscosity such as silicon grease. A damper, which is filled with fluid, elastically supports the chassis, which is a component mounting base of the disk device body, so that the viscous resistance of the damper is A disk device, wherein the disk device is arranged so that a large vibration damping direction and a vibration direction mainly generated when the disk device is used are substantially aligned with each other. 2. A first spring for urging upward against the gravity is provided above the center of gravity of the deck portion, and a second spring for urging in the direction of gravity is provided below the center of gravity of the deck portion. 2. The disk device according to claim 1, wherein the disk device is arranged so that the resultant force of the first and second springs is balanced with the gravity acting on the deck portion at a substantially neutral position of the damper. 3. A spring having 2n (n ≧ 3) springs for supporting the deck portion and biasing the deck portion diagonally upward is n.
And n springs for urging obliquely downward are arranged, and a mounting portion on the chassis side of the spring that is movable with respect to each spring in the line of action of the force of the spring, and an actuator that drives this. A disk device characterized by having each. 4. A spring having 2n (n ≧ 3) springs for supporting the deck portion and biasing the deck portion diagonally upward.
And n springs for urging obliquely downward are arranged, and with respect to each spring, a mounting portion on the chassis side of the spring that is linearly movable or rotatable in the direction of the line of action of the force of the spring, and these. 4. The disk device according to claim 3, further comprising: a cam that engages with the actuator and an actuator that drives the cam. 5. A detector for detecting the relative position between the deck section and the chassis, an amplifier for amplifying this signal, an integrator for integrating this signal in the time axis direction, and a reference signal for generating a certain set constant voltage. 4. The disk device according to claim 3, further comprising a comparator for comparing the signal from the generator and the integrator with the reference signal. 6. An engaging member for engaging a holder for holding a cartridge for accommodating a disk and a lid which is a part of a design for covering the holder, and an engaging member for engaging the lid and an apparatus main body. A spring that elastically supports the deck and a damper that suppresses vibration; deck support switching means that selectively elastically supports the deck; moving means that moves the deck to the lid side when the cartridge is attached and detached. A disk device comprising: 7. A spring for elastically supporting the deck portion, a damper for suppressing vibration, and a means for switching between elastic support and fixed support of the deck portion, the deck portion being elastically supported only during signal recording, and during signal reproduction and 2. The disk device according to claim 1, wherein the deck portion is fixedly supported when the disk is attached or detached.