JPH0752545B2 - Information storage device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information storage device using an information recording medium such as a disc such as an optical data file device, and in particular, an anti-vibration means for reducing vibration from the outside of the device. The present invention relates to a device having the same.

2. Description of the Related Art In recent years, an optical data file device using laser light has been developed as a computer external memory device. In the optical data file device, for example, a laser beam focused to about 1 μm is tracked at a track pitch of about 1.6 μm and is applied to a disk to record or reproduce a signal. Therefore, when vibration force is applied to the device during recording or reproduction, the device itself is required to have high vibration resistance in order to apply the light beam to the correct position. Therefore, as shown in FIG. 6 of the prior art Japanese Utility Model Laid-Open No. 62-85994, a disk motor table 109 for mounting a disk 107 housed inside the apparatus and an optical head section 110 as a recording / reproducing means are fixed. The outer frame 10 is provided with a substrate 106 for storing the information and a mounting means for the information recording medium (not shown because the disk 107 is not taken out and replaced in this example).
5 is held via a vibration damping means 111 such as a vibration damping damper having an elastic body such as rubber as a component to block external vibrations in the focusing and tracking directions, particularly indicated by arrows F and T in the figure. . On the other hand, FIG. 7 shows an example of Japanese Patent Publication No. 61-10896 in which the information recording medium is taken out of the apparatus and replaced. In this case, the tape cassette 102 for accommodating the information recording medium is provided in front of the exterior frame 101. Is inserted into the opening 113 provided in the direction of the arrow 103, and at the same time, the turning lid 104 that covers the opening 113 is rotated, and is inserted into the cut holder 112, which is the mounting means, to the position shown by the broken line in the figure. The tape cassette 102 is mounted at a predetermined position in the device.

Problems to be Solved by the Invention While the method of covering the opening 113 with the rotary lid 104 has an effect of preventing dust and the like from entering the apparatus when the apparatus is not used, a similar method is actually used. When applied to the example of the publication, the cassette holder 112 vibrates due to the vibration amplitude of the vibration isolator when external vibration is applied to the device, the tape cassette 102 abuts the opening 113, and the vibration is absorbed by the vibration isolator. The effect is not sufficiently obtained, and further, since the rotary lid 104 vibrates together with the tape cassette 102, there is a disadvantage that dust is rather promoted to enter the device due to a pumping effect of air inside and outside the device. The invasion of dust into the device causes major problems such as an increase in bit error rate in an optical data file device using an optical disk and an increase in dropout in a tape recorder device. The present invention has been made to solve the above problems, and completely covers the opening regardless of whether the device is used or not, prevents dust from entering, and vibrates the device to prevent vibration. (EN) Provided is an information storage device capable of reliably preventing dust from entering through an opening without causing a rotary lid that covers the opening to rotate and vibrate even when a mounting means for mounting an information recording medium on the device vibrates. To aim.

Means for Solving the Problems Technical means of the present invention for solving the above problems include an exterior frame of an apparatus, an opening provided in a front surface of the exterior frame for inserting an information recording medium, and A rotary lid that covers the opening by rotation, and the rotary lid is engaged to rotate,
A rotary power transmission means attached to the exterior frame,
Recording / reproducing means in the device for recording or reproducing information on the information recording medium, mounting means for mounting the information recording medium on the recording / reproducing means in the device, and the turning power transmitting means in cooperation with the mounting means. A rotary lid driving means for driving the rotary lid driving means, and a vibration damping means provided between the rotary lid driving means, the recording / reproducing means, and the mounting means for damping the vibration from external vibration. When inserting or ejecting the information recording medium into or from the apparatus, the rotary lid drive means and the rotary lid transmission means are brought close to the engageable position, and at least recording or reproducing by the recording / reproducing means is performed. When performing the reproduction, the rotary lid driving means is separated from the rotary power transmission means at a position beyond the vibration range of the rotary lid driving means with respect to the exterior frame. .

The present invention attaches the rotary lid transmission means for rotating the rotary lid that covers the opening to the exterior frame, and the rotary lid drive means that vibrates relative to the exterior frame by the vibration isolation means. The above problem is solved by arranging the transmission means so as to separate the transmission means at a position exceeding its vibration amplitude.

Example 1 FIG. 1 is an exploded perspective view showing an example in which the present invention is applied to an apparatus using a cartridge such as an optical disk. In FIG. 1, a cartridge 1 containing a disc (not shown) is inserted into the apparatus while rotating a rotating lid 2b that covers an opening 2c of a front panel 2a provided on the front surface of an exterior frame. A cartridge case 10 for receiving the inserted cartridge 1 is provided in the exterior frame. The cartridge case 10 has pins 11 erected on the cartridge case 10 engaged with long hole portions 19a provided at both ends of a bridge 19. A pair of leaf springs 21 whose one end is fixed to the bridge 19.
Is guided by the bridge 19 movably in the thickness direction of the cartridge 1 to be inserted while being regulated at one position. The main board 3 is fixed to the exterior frame 2 via a vibration damper 4 so as to be movable within a predetermined range according to vibration applied from the outside of the apparatus. Inside the main board 3, a cam groove 2 partially penetrated by the cam support shafts 26, 27 set up on the main board 3.
At 9,30, a pair of slide cams 28 are provided which are slidably supported in the longitudinal direction thereof. It should be noted that in the figure, only one of the pair is shown in detail in order to avoid unnecessary complication and facilitate understanding. The bridge 19 is a cutout portion in which a pair of shafts 20 are set up on each end of the bridge 19 and provided on the main substrate 3.
3a, the tip of which is further inserted into the groove portions 29a, 32 provided on the slide cam 28, and the cutout portion 3a
The movement position is restricted by the cam groove portions 29a and 32 in the height direction. Therefore, the slide cam 28
The height of the bridge 19 is raised or lowered by the movement of the cam grooves 29a, 32. On the other hand, at the center of the bridge 19, when the cartridge 1 is mounted, the magnet 22c (for fixing the disk 1b (FIG. 2) contained in the cartridge 1 on the disk motor table 8 provided on the sub-board 5 ( A disc clamp 22 having a built-in (see FIG. 2) is provided. And the upper part 22a and the lower part 22b of the disc clamp 22
The outer diameters of all are set to be larger than the hole 19b provided in the bridge 19 and are integrated so as to be movable only within a predetermined range with respect to the bridge. As shown in FIG. 2, a clamp shifter is provided between the upper portion 22a and the lower portion 22b of the disc clamp 22.
The engaging portion 25a of 25 is inserted, and the clamp shifter 25 is rotatably supported by the clamp shift shaft 23 supported by the shaft holder 24 fixed to the main substrate 3, and the engaging portion 25a of the leaf spring 21 is supported. It engages with the end portion 21a and is urged toward the bridge 19 side. When the cartridge 1 is inserted into the cartridge case 10 as shown in FIG.
The engaging portion 25a of the disk clamp 22 is in contact with the back surface of the upper portion 22a of the disk clamp 22 so that the disk clamp 22 does not contact the cartridge case 1 to be inserted, and the disk clamp 22
The upper part 22a and the top plate of the exterior frame 2 are held in close proximity to each other. When the bridge 19 moves to the cartridge 1 side by the movement of the slide cam 28, the plate spring 21 causes the clamp shifter 25 to rotate about the clamp shift shaft 23 to a position indicated by a broken line in the figure as shown by an arrow 25c, and then the clamp 2
2 is moved to the vicinity of the disk motor table 8. As a result, the disc clamp 22 fixes the disc 1b on the disc motor table 8 by the attraction between the magnet 22c and the disc motor table 8. Here, the disc clamp 22 is moved by being amplified more than the amount of movement of the bridge 19, preventing contact between the cartridge 1 and the disc clamp 22 when the cartridge 1 is inserted, and a slight movement of the ridge 19 causes the disc clamp 22 to move. Is located close to the disk motor table 8. While the first
As shown in the figure, on the sub-board 5 to which the disk motor table 8 is attached, an optical head unit 9 which is a recording / reproducing means configured to be movable at a high speed within a predetermined range, and the cartridge 1.
A positioning pin 41 for positioning the cartridge 1 by engaging with a positioning hole (not shown) provided at the bottom of the cartridge is provided. The sub-board 5 itself is rotatably supported by the pair of shafts 6 with respect to the main board 3, and a pair of cam follower shafts 7 erected on the side surfaces of the sub-board 5 are provided inside the slide cam 28. Cam groove shown by broken line in the figure
It is inserted into 31 and the rotation position is regulated by it. When the cartridge 1 is inserted, the head portion 9 provided on the sub-board 5, the disk table 8, and the positioning pins 41 for restricting the position and height of the cartridge 1 respectively project inside the cartridge case 10. The slide cam 28 is rotated so that it is located at a position where it does not interfere with the insertion of the cartridge 1 and is located away from the main board 3 and close to the bottom plate of the exterior frame 2, and the cartridge 1 moves to a predetermined position. Is rotated to the position shown by the broken line in FIG.
The positioning hole on the bottom surface of the disk engages with the positioning pin 41 to mount the disk 1b at a predetermined position on the sub-board 5. A shaft 12 is erected on the lower surface of both sides of the cartridge case 10, and a cartridge contact lever 13 and a cartridge drive lever 14 are provided on the shaft 12, respectively, in long hole portions 13a and 14a.
Is slidably guided. The cartridge drive lever 14 is inserted into the recess 1a of the cartridge 1 to hold the cartridge 1, and a slide cam 28.
A cartridge holding plate (15) having a cam follower shaft (18) abutting against the abutting cam portion (33) is rotatably supported by engagement with a hole (14c) of the rotating shaft (16). One end of the cartridge holding plate 15 has a cartridge contact lever 13 at one end.
A coil spring 15a fixed to the cartridge 1 is attached, and its rotational position is normally regulated by abutting the end 13b of the cartridge contact lever 13 and one end of the cartridge holding plate 15. As shown in FIG. The holding shaft 17 is maintained at a position where it does not hinder its entry when it is inserted. When the cartridge 1 is manually inserted from the position shown in FIG. 3a to the position shown in FIG. 3b by X in the figure against the coil spring 15a, in the process, the cartridge contact lever 13 and the cartridge holding plate 15 are inserted. The contact with is released, and the cartridge holding plate 15 is rotated by the coil spring 15 to bring the holding shaft 17 into contact with the side surface of the cartridge 1. Then, the holding shaft 17 of the recess 1a of the cartridge 1 comes in and the cartridge contact lever 13 is inserted through the coil spring 15.
And hold the cartridge 1. As shown in FIGS. 4A and 4B, a long hole portion 14 is provided at one end of the cartridge driving lever 14.
b is provided, and the drive shaft 36 of the cam follower plate 35 pivotally supported through the hole 35a is inserted into the other end 26a of the shaft 26 erected on the main board 3 in the long hole portion 14b. . The cam follower plate 35 is provided with a cam follower shaft 37 which is inserted into the cam groove 30a of the slide cam 28, and the cam follower plate 14 is moved by the movement of the cam groove 30a along with the movement of the slide cam 28 as shown in FIG. 4b. Rotate to drive cartridge drive lever 14
Is moved in the inserting direction 1c of the cartridge 1, whereby the cartridge 1 is moved by Y shown in FIG. 3b. In the figure, only one of the pair is shown in order to avoid unnecessary complication and to facilitate understanding, and the cartridge holding plate 15, the cartridge contact lever 13, and other components having the same function form a pair. And then the disc clamp
It is also configured on the other side through 22. Next, the motor 38 for driving the slide cam 28 is fixed to the motor mounting plate 39 together with the drive gear group 40, and the motor mounting plate 39 is mounted on the main board 3 so that the drive gear 40a meshes with the rack 34 provided on the slide cam 28. It is fixed. Similarly, a rack is also provided on the slide cam provided on the opposite side of 28 of the pair of slide cams, and is linked to the motor 38 via a gear (not shown) that meshes with the drive gear 40a.
On the other hand, on the rear side of the exterior frame 2, there is provided a pincushion-shaped positioning shaft 47 having a trapezoidal recess in the center of the shaft, which is erected in a holding metal fitting 46. Further, the trapezoidal portion of the positioning shaft is engaged by rotation. A matching position regulating plate 45 is rotatably provided by a shaft 43 which is erected on the main substrate 3. The position regulating plate 45 is normally regulated to rotate toward the main board 3 side by the coil spring 44, and the cam shafts 42 set up at the rear portions of the pair of slide cams 28 are located in front of the slide cam 2 in the apparatus, that is, on the front panel 2a side. When it is moved to a predetermined position, the position regulating plate 45 is rotated to engage with the positioning shaft 47 to regulate the relative position between the main board 3 and the exterior frame 2, that is, provided integrally with the main board 3. The positions of the cartridge case 10, the bridge 19, the slide cam 28, and the like, which are mounting means, and the exterior frame 2 are regulated. In addition, the position regulation in front of the device is performed by a shaft 58 that is set up inside the slide ram 28.
Is performed by entering the cam portion 55a of the positioning cam 55 fixed to the bottom surface of the exterior frame 2.

Next, the rotating power transmission means and the rotation lid transmission means for rotating the rotation lid 2b that covers the opening 2c will be described. A pair of swivel lids
2b is rotatably supported by a lid holding plate 48 fixed to the back side of the front panel 2a, and has a gear portion at one end.
Has 49. One of the kia parts 49 is a lid holding plate 48 via a pinion 50 supported by a shaft 51 on the lid holding plate 48, and the other is a lid holding plate.
48 is engaged with the rack portion 52 of the driving force transmitting cam plate 52 which is slidably guided by the shaft 54 in the long hole portion 52a, the center and one end of the coil are held by the lid holding plate 48, and the other end transmits the driving force. As shown in FIG. 5, the twisting coil spring 53 engaged with the cam plate 52 normally urges the rotating lid 2b in the direction to cover the opening 2c (the direction opposite to the arrow 61 in the figure). A rotary lid drive plate 57, in which a rotary lid drive pin 56 is erected, is fixed to the slide cam 28. When the slide cam 28 moves to the front of the device, that is, to the front panel 2a side, the rotary lid drive pin 56 is fixed. Engages with the cam portion 52b of the driving force transmitting cam plate 52 to move the driving force transmitting cam plate 52 to the position shown by the alternate long and short dash line in FIG. 5 and rotate the rotating lid 2b in the direction of arrow 62. is there.

In addition, the slide cam 28 for recording / playback etc.
In the case where the rotary lid drive pin 56 is in a position separated from the position of the outer frame 2 and the slide cam 28 via the anti-vibration damper 4, the position of the rotary lid drive pin 56 changes as indicated by arrows 59 and 60. Also, since the cam portion 52b of the driving force transmitting cam plate 52, which is a rotational force transmitting means, is located outside the vibration amplitude of the rotating lid 2,
The opening and closing of b is not affected in any way.

The operation of the configuration of the above embodiment will be described. First, a cartridge 1 having a built-in disc is mounted on a front surface of the external frame 2, and a rotary lid for covering an opening 2c of a front panel 2a.
2b is inserted into the device while rotating, but at that time, the slide cam 28 is in the position close to the front panel 2a, and the rotating lid drive pin 56 is in the position shown by the broken line in FIG. The engagement of the transmission cam plate 52 with the cam portion 52b is cut off, and the rotating lid 2b covers the opening 2c by the urging force of the coil spring 53. And again, the cam shaft that was set up on the slide cam 28
42 abuts and rotates the position regulating plate 45 to engage the position regulating plate 45 with the positioning shaft 47, and a shaft 58 also set up on the slide cam 28 engages with the position regulating cam 55 to exterior. The relative positions of the frame 2 and the main board 3 and the cartridge case 10, which is the mounting means of the cartridge 1 attached thereto, the bridge 19, the slide cam 28, etc., are restricted from being displaced by the vibration damping damper 4, resulting in the opening 1c. The relative position between the mounting means and the mounting means is maintained in a predetermined positional relationship, and the mounting means is not displaced by the reaction force of the force with which the cartridge 1 is inserted.
In this state, the tip of the cartridge 1 contacts the cartridge contact lever 13 while being housed in the cartridge case 10. When the cartridge 1 is further inserted, the pressing force of the coil spring 15a is overcome to move the cartridge contact lever 13 in the direction of arrow 1c. Therefore, the cartridge holding plate 15 pivotally supported by the cartridge drive lever 14
Is in contact with the cartridge contact lever 13 (Fig. 3a)
Is released, the coil spring 15a is rotated by the pulling force of the coil spring 15a about the rotating shaft 16, and the holding shaft 17 provided on the cartridge holding plate 15 is inserted into the recess 1a of the cartridge 1 while contacting the side surface of the cartridge 1. The cartridge 1 is held as shown in FIG. 3b. At this time, the cartridge 1
The end of is slightly protruding from the front panel 2a. The cartridge 1 by the detection switch (not shown)
When it is detected that is held in the cartridge case 10, the motor 38 rotates and the driving gear group 40 decelerates to move the pair of slide cams 28 in the 1c direction at a predetermined speed.
First, the cam follower plate 35 is rotated from the state of FIG. 4a to the state of FIG. 4b by the movement of the cam groove 30a accompanying the movement of the slide cam 28, and the cartridge drive lever 14 is moved in the insertion direction 1c of the cartridge 1. . Therefore, the cartridge holding plate 15 pivotally supported by the cartridge driving lever 14 also moves together with the cartridge driving lever 14, and the cartridge 1 remains held by the holding shaft 17 and the cartridge contact lever 13. Further in the 1c direction, FIG. 3b
It will be moved by Y shown in. As a result, the cartridge 1 is completely inserted into the exterior frame 2. Next, by moving the cam groove 31 provided inside the slide cam 28, the disc motor table 8 and the optical head portion 9 which are rotatably supported by the pair of shafts 6 with respect to the main substrate 3 are attached. The sub-board 5 moves from the position close to the bottom plate of the exterior frame 2 along with the movement of the cam follower shaft 7 to the main board 3
It rotates to the position where it comes into contact with. As a result, a gap is formed between the sub-board 5 and the bottom plate of the exterior frame 2 at the position where the sub-board 5 contacts the main board 3. When the slide cam 28 is further moved, the bridge 19 located near the top plate of the exterior frame 2 is lowered by the cam groove portions 29a and 32. Along with this, the cartridge case 10 that is engaged with 19 and is urged downward by the leaf spring 21, the cartridge contact lever 13 and the cartridge drive lever 1 that are connected to the cartridge case 10.
4, the cartridge 1 contained in the cartridge holding plate 15 and the cartridge case 10 is also lowered. Then, the cartridge 1 is engaged with the positioning pins 41 provided on the sub-board 5, and the disc is fixed at a predetermined position where it can be mounted on the disc motor table 8. On the other hand, as shown in FIG. 2A, the disc clamp 22 held at a position where it does not come into contact with the cartridge case 1 and where the upper portion 22a of the disc clamp 22 and the top plate of the exterior frame 2 are close to each other Clamp shifter 25 with leaf spring 21
Rotates about the clamp shift shaft 23 to the position shown by the broken line in the figure as shown by the arrow 25c, and therefore moves to the vicinity of the disc motor table 8. Then, the disc clamp 22 is attracted to the disc motor table 8 by the attraction force of the magnet 22c and the disc motor table 8, the disc 1b is fixed on the disc motor table 8, and the loading of the cartridge 1 is completed. Bridge 1 at this time
9. As the cartridge case 10 and the disc clamp 22 descend, a space is created between the top plate of the exterior frame 2.

In this process, the slide cam 28 moves in the direction of the arrow 1c, but the rotary lid drive pin 56, which was at the position shown by the broken line in FIG.
By rotating, the cam portion 52a of the rotary power transmission plate 52 moves after moving like the one-dot chain line,
Further, after the slide cam 28 further moves to complete the mounting of the cartridge 1, the engagement between the position regulation cam 55 and the shaft 58 and the engagement between the position regulation plate 45 and the position regulation cam shaft 42 are released. Thus, the position regulating plate 45 and the positioning shaft 47 are disengaged from each other, and the vibration absorbing damper 4 starts the vibration absorbing operation from the outside of the apparatus.

After the above loading operation is completed, the disk motor table 8 rotates and the optical head unit 9 writes information on the disk 1b or reads information from the disk. At this time, the optical head unit 9 is affected by a vibration shock from the outside.
The vibration damping damper 4 provided on the main board 3 expands and contracts so as to prevent the malfunction of the cartridge, and the relative position of the cartridge 1 including the exterior frame 2 and the slide cam 28 changes relative to the mounting means. As described above, since the rotary lid drive pin 56 is separated from the drive force transmitting cam plate to a position exceeding its vibration amplitude, the rotary lid 1b is not opened or closed by vibration from the outside of the device. .

Next, the case where the cartridge 1 is detached from the mounting will be described. Based on the attachment / detachment command, the motor 38 rotates in the direction opposite to that at the time of loading, and the slide cam 28 moves in the direction opposite to the arrow 1c. As a result, the attachment / detachment operation is the reverse of the loading operation. First, the position regulation cam 55 and the shaft 58 are engaged with each other, and the position regulation plate 45 and the position regulation cam shaft 42 are engaged with each other. The opening 2c of the front panel 2a provided on the front surface of the exterior frame 2 and a part of the mounting means for preventing the vibration absorbing operation of the vibration damper 4 from the outside of the apparatus by completing the engagement with the positioning shaft 47. Cartridge case 10
And the relative position with respect to the cartridge 1 housed therein. Then, the cartridge 1 eventually comes to the position shown in FIG. 3b, that is, the standby position for receiving the cartridge 1 into the apparatus at the time of starting the loading. In the process, the rotation lid drive pin 56 integrated with the slide cam 28 drives the driving force. Rotating lid 2 is brought into contact with cam portion 52a of transmission plate 52 and moved.
Rotate b to release the opening 2c. Then, the cartridge 1 enters the opened opening 2c in the discharging direction (the direction opposite to the arrow 1c). Then, the rotary lid driving pin 56 comes off the cam portion 52a to reach the standby position, but the rotary lid 2b has already entered the opening 2c in the ejection direction.
The rotation is restricted by abutting against.

Further, the motor 38 rotates and the slide cam 28 moves from the standby position to the front panel 2a side. As a result, the contact cam portion 33 of the slide cam 28 contacts the cam follower shaft 18 of the cartridge holding plate 15, and the cartridge holding plate 15 is indicated by the arrow.
15b is rotated in the opposite direction to the holding shaft 17 and the holding shaft 17 is recessed in the cartridge 1.
leave a. As a result, the pulling force of the coil spring 15a causes the cartridge contact lever 13 to move in the direction opposite to the arrow 1c, and the cartridge 1 that has been in contact with the cartridge contact lever 13 passes through the rotary lid 2b of the front panel 2a and is discharged to the outside of the apparatus. To be done. Thereafter, the motor 38 rotates in the reverse direction, that is, at the time of loading, and returns the slide cam 28 to the standby position.

EFFECTS OF THE INVENTION As described above, according to the present invention, the information recording medium is completely attached to the device by the vibration isolator by completely covering the opening regardless of whether the device is used or not, preventing dust from entering and vibrating the device. Even if the mounting means or the like to be mounted vibrates, the rotary lid that covers the opening does not rotate and vibrates, so that it is possible to prevent dust from entering through the opening due to the pumping action of the air inside and outside the device due to the rotating vibration. The intrusion of dust into the device has a great effect because it causes a large increase in bit error rate in an optical data file device using an optical disk and an increase in dropout in a tape recorder device.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an information recording / reproducing apparatus of one embodiment of the present invention, FIGS. 2A and 2B are a plan view and a side view, respectively, showing the operation of a disc clamp portion of the present invention, and FIG. FIG. 4 is an enlarged plan view of an essential part of the cartridge case portion showing the cartridge holding mechanism of FIG. 4, FIG. 4 is an enlarged side view of the essential part showing the movement mechanism of the cartridge case, and FIG. FIG. 6 and FIG. 7 are side views for explaining the relative position with respect to the means, and are schematic sectional views showing a conventional example. 1 ... Cartridge, 2 ... Exterior frame, 2b ... Rotating lid, 2c ... Opening part, 3 ... Main board, 4 ... Anti-vibration damper,
5 ... Sub-board, 8 ... Disk motor table, 9 ...
Optical head, 10 ... Cartridge case, 13 ... Cartridge contact lever, 14 ... Cartridge drive lever,
15 …… Cartridge holding plate, 19 …… Bridge, 22 …… Disc clamp, 28 …… Slide cam, 35 …… Cam follower plate, 38 …… Motor, 45 …… Position regulating plate, 47 …… Positioning shaft, 52… … Drive force transmission cam plate, 55 …… Positioning cam, 56 …… Rotating lid drive pin, 58 …… Axis.

Claims (1)

[Claims] 1. An exterior frame of an apparatus, an opening provided in a front surface of the exterior frame for inserting an information recording medium, a rotary lid for pivotally covering the opening, and a rotary lid. Rotational power transmission means that is engaged to move and is attached to the exterior frame, recording / reproducing means in the apparatus for recording or reproducing information on the information recording medium, and recording / reproducing means in the information recording medium in the apparatus. Mounting means to be mounted on, a rotary lid driving means for driving the turning power transmission means in cooperation with the mounting means, the rotary lid driving means, the recording / reproducing means, and the mounting means from external vibrations. In order to do so, a vibration isolation means is provided between the outer frame and the outer frame, and when the information recording medium is inserted into or ejected from the apparatus, the rotation lid driving means and the turning power transmission means are provided. Close to the engageable position, Also, when performing recording or reproduction by the recording / reproducing means, the rotary lid driving means is separated from the rotation power transmitting means to a position beyond the vibration range of the rotary lid driving means with respect to the exterior frame. An information storage device characterized by the above.