JPH0329818Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a magnetic recording/reproducing device, and more specifically, a shutter having a locking mechanism provided in a magnetic sheet pack used in this device. This invention relates to an improvement of a shutter opening/closing device for opening and closing operations.

[Prior art]

Recently proposed electronic still cameras utilize disk-shaped magnetic sheets as recording media for recording photographic images. This magnetic sheet is usually housed in a protective case called a magnetic sheet pack in order to protect its recording surface from dust, dirt, and damage caused by hands and the like. However, when a magnetic sheet pack is loaded and used in a magnetic recording/reproducing device, the magnetic head must come into contact with the recording surface of the magnetic sheet, so a part of the magnetic sheet pack has a window for inserting the magnetic head. It is necessary to form a section.

By the way, it is desirable to keep the above-mentioned window for inserting the magnetic head closed when the magnetic sheet pack is not in use, in order to protect the magnetic sheet recording surface. For this reason, for example,
As disclosed in Japanese Patent No. 58-94181, a magnetic sheet pack equipped with a shutter for opening and closing this window is known. According to the above publication,
An opening/closing device is shown that opens and closes the shutter in conjunction with inserting a magnetic sheet pack into a housing (hereinafter referred to as bucket) or ejecting it from the bucket, and automatically opens and closes the shutter. I'm starting to be able to do it.

On the other hand, magnetic sheet packs have been proposed that are equipped with a locking mechanism to prevent the shutter from sliding open accidentally except during magnetic recording and reproduction. When using a magnetic sheet pack equipped with such a locking mechanism, a separate means for releasing the locking mechanism is required. Therefore, there is a need for a shutter opening/closing device that opens the shutter after releasing the locking mechanism when inserting the magnetic sheet pack, and reliably closes the shutter when ejecting the sheet pack.

[Purpose of invention]

The present invention was developed in view of the above-mentioned technical background, and is useful for highly reliable shutter opening/closing in constructing a magnetic recording/reproducing device using a magnetic sheet pack in which a locking mechanism is provided for the shutter that is opened/closed. An object of the present invention is to provide a magnetic recording/reproducing device equipped with a magnetic recording/reproducing device.

In this specification, a magnetic recording device such as an electronic still camera, a magnetic reproducing device for reproducing images from a recorded magnetic sheet onto a CRT or as a hard print, and a magnetic device that performs both of the above functions are used. All recording and reproducing devices are collectively referred to as magnetic recording and reproducing devices.

[Structure of the idea]

In order to achieve the above object, the present invention has a shutter opening/closing device that, when a magnetic sheet pack is inserted, releases a locking member provided on the magnetic sheet pack for locking the shutter in the window closed position and locks the shutter. A lock release part opens to the window opening position, and when a magnetic sheet pack is inserted, the lock release member is positioned so as to be able to engage with an engaging part provided on the shutter before releasing the lock member, and the magnetic sheet pack is a shutter closing portion that elastically engages the shutter with an engaging portion of the shutter to close the shutter from the window open position to the closed position during ejection; It is characterized in that a magnetic sheet pack detection section that holds the shutter in an engaged position or a non-engaged position is configured to operate integrally with the engagement section of the shutter.

[Configuration of Example]

The magnetic sheet pack used in the device of this invention is
The second figure is shown as an exploded perspective view and a partial sectional view, respectively.
In the figure and FIG. 3, the magnetic sheet pack 1
consists of a case 4 consisting of an upper case 2 and a lower case 3, a magnetic sheet 5 rotatably housed in the case 4, and a shutter 6 slidably attached to one side of the case 4. ing. Window portions 7 and 8 are formed in the upper case 2 and lower case 3 at opposing positions, respectively. A magnetic head 10 (see FIG. 1) is inserted through the window 8 of the lower case 3 when the magnetic sheet pack 1 is loaded into a magnetic recording and reproducing apparatus. On the other hand, from the window 7 of the upper case 2, there is a regulation plate 43 facing the magnetic head 10 with the magnetic sheet 5 sandwiched therebetween.
(see FIG. 1) is inserted, and the contact pressure between the magnetic sheet 5 and the magnetic head 10 is stabilized.

Center core 1 fixed to the center of magnetic sheet 5
1 is equipped with a spindle 13 (see FIG. 1) when the magnetic sheet pack 1 is used, and by driving this spindle 13 with a motor (not shown), the magnetic sheet 5 is rotated at high speed. Become. This center core 11 has openings 14 and 1 formed at the center of each of the upper case 2 and lower case 3.
5 to outside of case 4.

The shutter 6, which is slidably attached to one side of the case 4, has a U-shaped cross section so as to sandwich the upper case 2 and the lower case 3, respectively. 3 is slid along movement paths 16 and 17 formed as recesses on the outer surface side of 3. The shutter 6 has a locking hole 18 and a projection 20 formed therein. In the locking hole 18,
As will be described later, when the shutter 6 is closed, a closing lever 25 (see FIG. 1) serving as a shutter closing portion is engaged. Further, the protrusion 20 is projected into a groove 21 formed on one side of the overlapping upper case 2 and lower case 3. A lock lever 24, which is attached to the lower case 3 via holding pins 27 and 28 and projects into the groove 21 by its own elasticity, protrudes within this groove 21. 24 lock holes 2
The projection 20 of the shutter 6 is engaged in the inside of the shutter 6 . Therefore, in this state, even if an attempt is made to slide the shutter 6 by hand, the shutter 6 will not move.

Note that this shutter 6 is attached to the bottom surface of the shutter 6.
A bent portion 26 is provided on the bottom surface of the lower case 3 in the direction of movement of the shutter 6 (in FIG. 3, the direction perpendicular to the plane of the paper).
It goes into a groove that extends along the . Also,
When the magnetic sheet pack 1 constructed as described above is inserted into the bucket 30 (see FIG. 1), it is moved in the direction of arrow 23 in FIG. 2.

Bucket 30 into which the magnetic sheet pack 1 is inserted
As shown in FIG.
It is pivoted by. A closing lever 25 is rotatably attached to one side edge of a base plate 32 constituting the bucket 30 by a shaft 33, and
Actuation lever 35 as a magnetic sheet pack detection section
and is provided. These levers 25, 35
Each of them is made of a metal material such as aluminum die-casting so as not to be easily deformed. The actuating lever 35 is biased counterclockwise by a leaf spring 34 fixed to the base plate 32, and the closing lever 25 is biased clockwise by a coil spring 36 hooked between it and the actuating lever 35. energized. Note that the use of the coil spring 36 whose biasing force can be easily adjusted is advantageous in achieving smooth interlocking of both the levers 25 and 35.

The operating lever 35 includes a stopper 37 that restricts the rotation of the closing lever 25, a lock release portion 38 that presses the lock lever 24 provided on the magnetic seat pack 1 to release the lock, and a lock release portion 38 that releases the lock by pressing the lock lever 24 provided on the magnetic seat pack 1. A detection piece 39 serving as a detection section for detecting insertion is provided. In this embodiment, the lock release portion 38 is connected to the operating lever 35.
Although it is provided integrally with the closing lever 25, it may also be provided on the closing lever 25. On the other hand, the closing lever 25
is provided with an engaging piece 40 that engages with the locking hole 18 of the shutter 6 provided in the magnetic sheet pack 1. In the initial state where the magnetic sheet pack 1 is not inserted into the bucket 30, the detection piece 39 of the operating lever 35 is not inserted into the bucket 30.
It protrudes into the bucket bag 30 from an opening 49 formed in the side wall of the bag.

Note that a door 42 having a regulating plate 43 attached to its inner surface is also pivotally attached to the shaft 31 that pivots the bucket 30 to the device body 12, and is rotatable with respect to the device body 12. At the same time, it can also rotate relative to the bucket 30.

When the magnetic sheet pack 1 is inserted in the direction of the arrow 45 in FIG. Get into it. On the other hand, the regulating plate 43 attached to the door 42 enters into the bucket bag 30 through the opening 47. As a result, the center core 11 of the magnetic sheet 5 is attached to the spindle 13, the magnetic head 10 comes into contact with the recording surface of the magnetic sheet 5, and the regulation plate 43 is approached to the magnetic sheet 5 from the opposite side of the magnetic head 10. Magnetic recording/reproduction becomes possible. In addition,
During magnetic recording/reproducing operations, the magnetic head 10 is moved in the radial direction of the magnetic sheet 5 by a head feeding mechanism 48.

[Effect of the embodiment]

In the magnetic recording/reproducing apparatus configured as described above, when the magnetic sheet pack 1 is inserted into the bucket 30, the detection piece 39 protruding into the bucket 30 detects the magnetic sheet pack 1 as shown in FIG. Pressed by the tip of 1. As a result, the actuating lever 35 is rotated clockwise against the bias of the leaf spring 34. Following the rotation of the operating lever 35, the closing lever 25 rotates clockwise via the coil spring 36. Since the relative position between the tip of the magnetic sheet pack 1 and the shutter 6 which is slidably attached to the magnetic sheet pack 1 is fixed in advance, the closing lever 25 is rotated as described above. engaging piece 40
When the shutter 6 is projected into the bucket 30, the locking hole 18 of the shutter 6 is located within the projection path of the engagement piece 40. Therefore, the engagement piece 40 enters the locking hole 18 and is positioned so as to be able to engage with the locking hole 18. Thereafter, the lock release part 38 provided on the operating lever 35 releases the magnetic sheet pack 1.
The lock lever 24 protruding into the groove 21 is pressed.

When the lock lever 24 is pressed by the lock release part 38, the lock lever 24 is pushed upward in FIG. 4 against its own elasticity.
The lock hole 22 of the lock lever 24 releases the restriction on the protrusion 20 of the shutter 6. Therefore, the magnetic sheet pack 1 is further added to the bucket 30.
As it is inserted inside, as shown in Figure 5,
The lock release part 38 comes into contact with the shutter 6, and the main body of the magnetic sheet pack 1 is moved to the right in the figure while the shutter 6 is held in that position. At this time, the engaging piece 40 of the closing lever 25 is located within the locking hole 18, as shown in FIG. In this way, the shutter 6 is gradually opened and the windows 7 and 8 are exposed. In addition, during this insertion process, when the lock lever 24 is removed from the protruding position of the lock release portion 38, the lock lever 24 is protruded into the groove 21 again.

As the magnetic sheet pack 1 is further inserted into the bucket 30, as shown in FIG.
2, and the insertion of the magnetic sheet pack 1 is completed. At this point, the shutter 6 is completely opened, and the window 7 of the upper case 2 of the magnetic sheet pack 1, that is, the regulating plate 43
A window 7 for inserting the magnetic head (see FIG. 1) toward the magnetic sheet 5, and a window 8 of the lower case 3, that is, a window for inserting the magnetic head 10 toward the recording surface of the magnetic sheet 5. 8 is completely opened. Then, as the door 42 and the bucket 30 are closed, the magnetic head 10 approaches the magnetic sheet pack 1 through the openings 46 and 47 formed in the bucket 30.
The regulation plate 43 further enters into the windows 8 and 7 of the magnetic sheet pack 1, and comes close to the magnetic sheet 5. At the same time, the spindle 13 passes through the opening 46 of the bucket 30 and is chucked to the center core 11 of the magnetic sheet 5, completing preparations for operation of the magnetic recording/reproducing apparatus.

In this way, the magnetic sheet pack 1 is loaded into a predetermined position and magnetic recording/reproducing processing is performed.
When these processes are completed and the bucket 30 is opened together with the door 42, the magnetic head 10, the regulation plate 43, and the spindle 13 are retracted from the bucket 30, and then, by the action of the pack eject mechanism (not shown), The magnetic sheet pack 1 is discharged from the bucket 30. That is, the magnetic sheet pack 1 is slid to the left from the position shown in FIG. At this time, since the engaging piece 40 of the closing lever 25 is positioned so as to be able to engage with the locking hole 18 of the shutter 6, as the magnetic sheet pack 1 is ejected, the engaging piece 40 moves into the locking hole. 18, and the main body of the magnetic sheet pack 1 moves while the shutter 6 remains in its original position. Therefore, as shown in FIG. 7, the shutter 6 gradually closes the windows 7 and 8. At this time, even if the locking piece 40 is in a position out of the locking hole 18 as described above, the locking piece 40 becomes elastic due to the action of the coil spring 36 as the magnetic sheet pack 1 is ejected. Since the magnetic sheet pack 1 is engaged with the locking hole 18, the magnetic sheet pack 1 will not be ejected with the shutter 6 open. When the tip of the magnetic sheet pack 1 begins to come off the rotation path of the detection piece 39 of the actuating lever 35, the actuating lever 35 is rotated counterclockwise by the urging force of the leaf spring 34 as the magnetic sheet pack 1 moves. being moved.

The lock lever 24, which had been projected into the groove 21, is once pressed by the lock release portion 38, and then the pressure is released and the lock lever 24 is projected into the groove 21 again. At this point, the locking hole 18 and the engaging piece 4 are still connected.
0 has not been released, and the shutter 6 moves further in the closing direction. As a result, the protrusion 20 of the shutter 6 locks into the lock hole 2 of the lock lever 24.
2 and the shutter 6 is locked. and,
When the magnetic sheet pack 1 is further moved, the closing lever 25 rotates counterclockwise, and the engaging piece 4 of the closing lever 25 rotates counterclockwise.
0 is removed from the locking hole 18. In this way, after the lock hole 22 of the lock lever 24 captures the protrusion 20 of the shutter 6, the engagement piece 4 of the closing lever 25
0 is set aside from the locking hole 18,
When the magnetic sheet pack 1 is ejected, the shutter 6 is reliably locked in the closed position.

In the above embodiment, in order to adjust the relative movement between the insertion of the magnetic sheet pack 1 and the operating lever 35, the tip of the detection piece 39 of the operating lever 35 is rounded or tapered, and the closing lever is In order to ensure the engagement or disengagement between the engagement piece 40 of 25 and the locking hole 18 of the shutter 6, the shape of the tip of the engagement piece 40 may be changed as appropriate.

[Effect of idea]

As described above, in the present invention, as a shutter opening/closing device having a locking mechanism used in a magnetic recording/reproducing device, the member for closing the shutter before releasing the locking mechanism of the shutter and starting the opening operation of the shutter is provided. Therefore, even if the magnetic sheet pack is ejected during insertion, the magnetic sheet pack can be reliably taken out with the shutter closed.

In addition, since the above-mentioned shutter is configured such that the closing member and the engaging portion of the shutter elastically engage with each other, the relative positional relationship between the magnetic sheet pack detection portion and the shutter closing portion may be shifted, and the shutter closing portion may Even if the engaging part of the shutter is not set to the engaged position, problems such as the magnetic sheet pack getting stuck in the shutter closing part and being unable to be inserted, or the shutter being ejected without being completely closed will not occur. do not have.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention. FIG. 2 is an exploded perspective view showing an example of the structure of the magnetic sheet pack used in the present invention. FIG. 3 is a partial sectional view of the magnetic sheet pack shown in FIG. 2. FIG. 4 is an explanatory view of the operation of the present invention showing the initial state when the magnetic sheet pack is inserted into the bucket. FIG. 5 is an explanatory view of the operation of the present invention, showing a state in which the magnetic sheet pack is inserted into the bucket. FIG. 6 is an explanatory view of the operation of the present invention, showing a state in which the magnetic sheet pack has been inserted into the bucket. FIG. 7 is an explanatory view of the operation of the present invention, showing the state in the middle of discharging the magnetic sheet pack from the bucket. 1... Magnetic sheet pack, 2... Upper case, 3
... lower case, 5 ... magnetic sheet, 6 ... shutter, 7, 8 ... window section, 10 ... magnetic head, 12
... device body, 18 ... locking hole, 20 ... protrusion,
22...Lock hole, 24...Lock lever, 25
... Closing lever, 30 ... Bucket, 35 ... Operating lever, 36 ... Coil spring, 38 ... Lock release part, 42 ... Door, 43 ... Regulation plate.

Claims (1)

[Claims for Utility Model Registration] A bucket for receiving a magnetic sheet pack, which has a window into which a magnetic head is inserted and a shutter for opening and closing this window; and a shutter opening/closing device for closing the shutter by opening the magnetic sheet pack and discharging the magnetic sheet pack from the bucket, wherein the shutter opening/closing device closes the shutter by opening the magnetic sheet pack and discharging the magnetic sheet pack from the bucket. a lock release part for releasing the provided lock member for locking the shutter in the window closed position and releasing the shutter to the window open position; and the lock release part locks the lock member when inserting the magnetic sheet pack. Before release, the shutter is positioned so as to be able to engage with an engaging portion provided on the shutter, and when the magnetic sheet pack is ejected, the shutter is elastically engaged with the engaging portion of the shutter to move from the window open position to the closed position. A shutter closing portion that closes the shutter when the shutter closes, and a magnetic sheet pack detection portion that detects insertion or ejection of the magnetic sheet pack and holds the shutter closing portion in an engaged position or a non-engaged position with respect to the engaging portion of the shutter are integrated. 1. A magnetic recording and reproducing device characterized in that it is configured to be operable.