JPH0664817B2 - Lid opening and closing mechanism - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid opening / closing mechanism, and particularly to inserting a recording medium into a bucket through an insertion opening of a front panel, and inserting the bucket in the same insertion direction as the recording medium. Direction, and then moves in a direction orthogonal to the insertion direction to position the recording medium at a recording or reproducing position and to open or close the lid of the insertion opening in an apparatus for recording or reproducing on the recording medium. Regarding

[Conventional technology]

Recently, a combination of an image pickup device such as a solid-state image pickup device and an image pickup tube and a recording device using a magnetic sheet that is inexpensive and has a relatively large storage capacity as a recording medium is used to magnetically rotate a still image of a subject purely electronically. An electronic still camera system has been developed in which recording on a sheet and reproduction of an image are performed by a separate television system or printer.

The magnetic sheets used in such systems are typically used in the form of magnetic sheet backs. In the magnetic sheet pack, a magnetic sheet for magnetically recording still image information and the like is rotatably housed, and the magnetic sheet pack is used in a magnetic recording device incorporated in an electronic camera or a reproducing device integrated with or separate from the magnetic recording device. Used by mounting.

The mounting of the magnetic sheet pack is generally performed by moving a bucket containing the magnetic sheet pack. In the case of a slot-in type bucket, the magnetic sheet pack is inserted into the bucket through an insertion opening formed in the front panel of the apparatus body.

[Problems to be solved by the invention]

Conventionally, a lid is provided at the insertion port for inserting the magnetic sheet pack, but when the magnetic sheet pack is inserted into the bucket, the lid is always open. Therefore, at the time of magnetic recording / reproduction, there is a possibility that another magnetic sheet pack may be erroneously inserted from the insertion port even though the magnetic sheet pack is already inserted in the bucket. or,
During magnetic recording / reproduction, dust or the like sometimes entered through the insertion port.

The present invention has been made in view of such circumstances, and an object thereof is to provide an opening / closing mechanism of a lid capable of preventing double insertion of a recording medium such as a magnetic sheet pack.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention inserts a recording medium into a bucket through an insertion opening of a front panel, moves the bucket in the same direction as the inserting direction of the recording medium, and then intersects the inserting direction at right angles. In a device that positions the recording medium at a recording or reproducing position by moving the recording medium in the direction, and performs recording or reproducing on the recording medium, the device is arranged inside the insertion opening of the front panel freely on the road and is inserted by a spring. A first lid urged to close the mouth, and a second lid slidably arranged on the front panel to open or close the insertion opening of the front panel
Is rotatably disposed on the main body of the apparatus, one end of which is engaged with the second lid and the other end of which is regulated by the bucket, and by the operation of the bucket in a direction orthogonal to the insertion direction, It is characterized by comprising a lever for sliding the lid of 2.

[Action]

That is, the first lid normally closes the insertion port, and when the magnetic sheet pack is inserted through the insertion port during magnetic recording / reproduction,
The first lid is pushed away and the magnetic sheet pack is inserted into the bucket. When the loading operation is performed after the magnetic sheet pack is inserted into the bucket, the lever rotates in response to the operation of the bucket at the time of loading, especially the operation in the direction orthogonal to the inserting direction of the magnetic sheet pack into the bucket. To be made. By this rotation of the lever, the second lid provided slidably on the front panel closes the insertion opening.

〔Example〕

Hereinafter, preferred embodiments of a lid opening / closing mechanism according to the present invention will be described in detail with reference to the accompanying drawings.

First, a magnetic sheet pack used in a magnetic recording or reproducing apparatus such as an electronic camera will be described. FIG. 9 is a plan view of the magnetic sheet pack 10, and FIG. 10 is a sectional view taken along the line AA of FIG.

As shown in FIG. 9, the magnetic sheet pack 10 has a substantially rectangular shape, and a magnetic sheet 12 on which still image information and the like are recorded is rotatably accommodated therein. A center core 14 as a reinforcing member is provided at the center of the magnetic sheet 12, and the center core 14 is exposed to the outside through a circular opening 16 of the magnetic sheet pack 10. A center hole 15 is formed in the center core 14, and an elastic piece 17 is formed in the center hole 15. The center hole 15 of the center core 14 resists the urging force of the elastic piece 17 on the drive shaft 104 described later. It is designed to fit in.

Further, a window portion 18 in which a magnetic head described later is located is opened in the magnetic sheet pack 10, and this window portion 18 is opened and closed by a slidable shutter 20. That is, the shutter 20 prevents the dust from adhering to the magnetic sheet 12 by closing the window portion 18 before the magnetic sheet pack 10 is inserted into the bucket described later, and is provided in the bucket when inserted into the bucket. It is locked by the claw and moves downward in FIG. 9 to open the window portion 18. Further, the magnetic sheet pack 10 is
Has positioning holes 10A and 10B used to position the magnetic recording medium at a position for magnetic recording or reproduction. In addition,
The structure of the magnetic sheet pack is defined by a unified standard.

FIG. 1 is an exploded perspective view showing an example of a magnetic recording / reproducing apparatus.
The present invention is applied to this magnetic recording / reproducing apparatus. This magnetic recording / reproducing apparatus includes a main body 100, a bucket plate 200,
The side plate 300, the right frame 400, the left frame 500, the main arm 600, the regulation plate holder 700, and the lid opening / closing mechanism 800 are main components.

First, the internal structure of the main body 100 will be described.
A motor 102 for driving a magnetic sheet is arranged in the magnetic sheet pack 10. The drive shaft 104 of the motor 102 is a magnetic sheet pack 10 shown in FIG.
Insert into the center hole 15 of the center core 14 of the
The magnetic sheet 12 is rotated within 10 at a predetermined rotation speed.

Although not shown, the main body 100 is provided with a magnetic head, a head carriage to which the magnetic head is attached, and a feed motor for moving the head carriage via the lead screw. When the feed motor rotates by a predetermined number of rotations, this rotation is transmitted to the lead screw via the reduction gear. The rotation of the lead screw causes the head carriage to move in the axial direction of the lead screw by a predetermined pitch, and at the same time, the magnetic head also moves the magnetic sheet.
Move in 12 radial directions. In this way, the magnetic head is moved so that still image information is magnetically recorded or reproduced on the magnetic sheet 12 for each track. In addition, 106, 1
08 is a positioning pin for the magnetic sheet pack, which has a positioning hole.
It is inserted into 10A and 10B (Fig. 9). Further, 110 and 112 are height determining pins of the regulation plate 702, into which the boring pins 704 and 706 attached to the regulation plate holder 700 are inserted.

The bucket plate 200 includes guide pieces 202, 204, 20 forming guide grooves for guiding and supporting one side (the right side in FIG. 9) of the magnetic sheet pack 10 on which the shutter 20 is provided.
6, a shutter opening member 208 for opening the shutter 20, and a support piece 2 for rotationally supporting a shutter closing member 224 described later.
10, a taper member 214 for removing the shutter closing member 224 from the shutter 20, a sliding surface 220 engaging with a lever 802 for opening and closing a second lid 808 described later, and the like are formed.

And, the member 210 of this bucket plate 200 has a pin
A shutter closing member 224 is rotatably arranged by 222,
A spring 226 is arranged between the hook 212 on the bucket plate side and the hook 224a of the shutter closing member 224.
24 is biased toward the back of the bucket plate 200 (see FIG. 6). A spring 230 is arranged between the hole 228c of the pop-up member 228 and the hole 216 on the bucket plate side, and a spring 234 is similarly arranged between the hole 232a of the prelock lever 232 and the hook 218 on the bucket plate side. ing. In addition,
The pre-lock lever 232 is rotatably arranged on the bucket plate 200 by pins 236 and 238. Further, the bucket plate 200 is provided with a leaf switch 240 for confirming that the magnetic sheet pack has been inserted.

The bucket plate 200 is attached to the side plate 300 by the pins 306 and 308 via the spacers 302 and 304 (see FIG. 7). In addition, bucket plate 200
The pop-up member 228 is interposed between the spacers 302 and 304 and the pop-up member 228.
It is slidable back and forth along 00. In addition, a slide plate 3 is provided between the side plate 300 and the pins 306 and 308.
10, the slide plate 310 is guided by protrusions 312a, 312b, 312c, 312d formed on the side plate 300, and is slidable in the front-rear direction along the side plate 300. Furthermore, the side plate 300 has pins 314.
The lock release spring 316 is provided by the above, and the cam follower 318 is provided on the slide plate 310.

Rotating shafts 402, 404, and 406 are provided on the right frame 400, and a double-sided cam 408 and a gear 41 are provided on these rotating shafts, respectively.
0 and 412 are attached. A motor 414 for power loading is arranged between the frame 400 and the side plate 300. A worm gear is generated on the drive shaft (not shown) of the motor 414, and the worm gear meshes with the smaller gear 412a of the gear 412 and the larger gear 412b of the gear 412. The larger gear 410a of the gear 410 meshes with the smaller gear 410b of the gear 410 meshes with the gear 408a formed on the circumferential surface of the double-sided cam 408. Double-sided cam
The cam follower 318 provided on the slide plate 310 is fitted in the spiral cam groove 416 formed on one surface of the 408 shown in the figure (see FIG. 8), and the spiral formed on the other surface. A cam follower 60 provided in an arm 602 on the right side of a main arm 600 to be described later is provided in a cam groove (not shown).
4 is designed to fit in.

The sub-arm 502, which will be described later, is pinned to the left frame 500.
A member 506 that is rotatably disposed by 504 and that regulates the position of the left side surface of the magnetic sheet pack 10 when the magnetic sheet pack 10 is inserted into the bucket is disposed.

The main arm 600 is provided with a shaft 620 having three springs 622, 624, 626, the left end of which is the left frame 50.
It is pivotally supported in a hole 508 of 0. Further, a shaft is provided in a projecting manner on the base of the right arm 602 of the main arm 600 (not shown), and the shaft is pivotally supported in the hole 420 of the right frame 400. As a result, the main arm 600 is rotatable with respect to the left and right frames.

The tip of the right arm 602 of the main arm 600 is
As described above, the cam follower 604 is provided, the left arm 606 is formed by bending the support portion 608 for supporting the left side of the magnetic sheet pack 10 and the support portion 609 for supporting the sub arm 502, and Three center core pushing portions 610, 612, 614 are formed in the central portion of the main arm 600.

The regulation plate holder 700 has a regulation plate 702 on its lower surface and a P / G sensor 708 on its upper surface. P ・ G
In the sensor 708, the detecting portion 708a has a hole 71 in the regulation plate holder 708.
The magnetic field generator 26 (see FIG. 9), which is arranged so as to face 0 and is provided on the upper surface of the center core 14, generates a pulse signal each time the position of the hole 710 is reached. The pulse signal is used to detect the rotation phase of the magnetic sheet 12. In addition, the drive shaft of the motor 102 of the regulation plate holder 700
At a position 712 facing the 104, a height determining pin 714 of the regulation plate 702 that contacts the drive shaft 104 is screwed.

The regulation plate holder 700 has two supporting portions for the main arm 600.
The 616 and 618 and the supporting portion 502a of the sub arm 502 are supported at three points so that they are always held horizontally. The regulating plate holder 700 is pressed downward by three springs 622, 624, 626 arranged on a shaft 620 attached to the main arm 600.

The lid opening / closing mechanism 800 mainly includes a lever 802, a first lid 804, a front frame 806, a second lid 808, and a front panel 810. The lever 802 is rotatably arranged on the member 506 and the side plate 300 by pins 812 and 814, respectively, and is biased counterclockwise by a spring 816. The lever 802 is a bent piece 8
18 contacts the sliding surface 220 of the bucket plate 200, and the rotation in the counterclockwise direction is restricted.

The first lid 804 has left and right frames 400, 500 by means of a shaft 820.
It is rotatably disposed on the shaft 820, and is urged in the counterclockwise direction by a spring 822 provided on the shaft 820, and normally abuts on a front frame 806 disposed between the left and right frames. Second
Pins 824 and 826 are arranged on the lid 808 of the
6 is a long hole 828 of the lever 802 via the front frame 806,
It is engaged with 830.

Next, the operation of each part of the magnetic recording / reproducing apparatus having the above configuration will be described.

FIG. 6 shows an opening / closing mechanism of the shutter. In the figure, when the magnetic sheet pack 10 is inserted into the bucket plate 200, the shutter 20 of the magnetic sheet pack 10 pushes the claws 242b of the shutter closing member 224 and rotates the shutter closing member 224 to get over it. The shutter opening member 208 in the middle of the guide groove unlocks and opens the shutter. When the shutter 20 is fully opened, the claw 224b of the shutter closing member 224 is engaged with a hole (not shown) provided on the side surface of the shutter 20.

On the other hand, when the magnetic sheet pack 10 is taken out, the claw 224b of the shutter closing member 224 is engaged with the hole formed in the shutter 20, so that the shutter is closed when the magnetic sheet pack 10 is taken out. When the magnetic sheet pack 10 is further pulled after the shutter 20 is closed, the shutter closing member 224 moves together with the magnetic sheet pack 10 against the biasing force of the spring 226, and then is rotated by the taper member 214 of the bucket plate 200. To be made. Accordingly, the claw 224b of the shutter closing member 224
Is released from the shutter 20.

FIG. 7 shows a pre-lock mechanism of the magnetic sheet pack. When the magnetic sheet pack is inserted as shown in the figure, and the front end of the magnetic sheet pack abuts on the engaging portion 228a of the hop-up member 228, the magnetic sheet pack 10 is further inserted.
228 advances with the magnetic sheet pack 10. The pop-up member 228 advances by a predetermined distance, and the contact piece 228b of the pop-up member 228 moves from the contact surface 232b of the pre-lock lever 232.
When reaching c, the pre-lock lever 232 rotates counterclockwise in FIG. 6 by an amount corresponding to the step of the contact surface, and the protrusion 232d at the tip of the lever causes the projection hole 232d of the magnetic sheet pack 10 to be positioned.
Engage with A (Fig. 9). As a result, the magnetic sheet pack 10 is pre-locked. Also, the above pre-lock lever
When the bent portion 232e at the rear end of the lever is raised by the rotation of 232, the leaf switch 240 is turned on by this bent portion 232e, and it is confirmed that the magnetic sheet pack 10 has been inserted. Is started.

In addition, in order to release the pre-lock, the bucket plate 200 moves in the magnetic sheet pack discharge direction during unloading, the bent piece 232f of the pre-lock lever 232 contacts the lock release spring 316, and the pre-lock lever 232 is moved to the position shown in FIG. This is done by being turned clockwise in the above direction.

FIG. 8 shows a loading mechanism of the magnetic seat back.
In the figure, at the time of loading, the driving force is transmitted from the motor 414 to the double-sided cam 408 via the gears 412 and 410,
As shown in FIG. 8A, the double-sided cam 408 rotates in the arrow A direction. When the double-sided cam 408 rotates in the direction of arrow A, the slide plate 310 in which the cam follower 318 is fitted in the cam groove 416 of the double-sided cam 408 advances, and as a result, the slanted holes 310a and 310b formed in the slide plate 310 cause the pins 310 to be pinned. 306 and 308 are moved along the hook-shaped holes 300a and 300b formed in the side plate 300. That is, when the double-sided cam 408 is rotated approximately 180 ° from the initial state of FIG. 8 (a), the bucket plate 200 moves to the forward end as shown in FIG. 8 (b). Furthermore, when the double-sided cam 408 rotates by approximately 180 °,
As shown in FIG. 8 (c), the bucket plate 200 moves to the lower end.

Next, the set member (main arm 600, regulation plate holder 700
Etc.) will be described. When the double-sided cam 408 rotates in the direction of arrow A, the main arm 600 in which the cam follower 604 is fitted in the other cam groove (not shown) of the double-sided cam 408.
Rotates clockwise. As a result, the main arm
The regulation plate holder 700, which is horizontally supported by three points of the two supporting portions 616 and 618 of the 600 and the supporting portion 502a of the sub-arm 502 and whose one end is guided to the guide hole 500a of the left frame 500, is in a horizontal state. It descends to a predetermined height. Then, when the main arm 600 rotates by a predetermined amount, the three center core pressing portions 610, 612, 614 of the main arm 600 press the center core 14 of the magnetic sheet 12, and the center hole 15 of the center core 14 is securely attached to the drive shaft 102. Mating.

It should be noted that the double-sided cam 408 has the bucket plate 200 such that the main arm 600 does not rotate while the bucket plate 200 is moving forward and the main arm 600 also rotates in synchronization with the bucket plate 200 when the bucket plate 200 is descending. Two different cam grooves are formed so that the main arm 600 for pushing the center core is rotated after the lowering of 200 is completed.

Next, the lid opening / closing mechanism according to the present invention will be described with reference to FIGS.
This will be described in detail with reference to the drawings.

FIG. 2 shows the opening / closing mechanism of the lid before inserting the magnetic sheet pack 10. This lid opening / closing mechanism mainly includes the lever 802, the first lid 804, and the second lid 808, as described above.

As shown in FIG. 1, the lever 802 is rotatably arranged on the member 506 fixed to the left frame 500 and the plate 300 again by pins 812 and 814, respectively, and is rotated counterclockwise by the spring 816. Biased in the direction.

The first lid 804 has left and right frames 400, 500 by means of a shaft 820.
It is rotatably disposed on the shaft 820 and is biased counterclockwise by a spring 822 provided on the shaft 820. Second lid 808
Is a front frame 806 arranged between the left and right frames.
And the front panel 810 are arranged so as to slide in a direction orthogonal to the insertion direction of the magnetic sheet pack 10. The second lid 808 is provided with pins 824 and 826, and the pins 824 and 826 are connected to the lever 802 via the frame 806 on the front surface.
Engaged with the long holes 828, 830 of the.

In the state shown in FIG. 2, the first lid 804 is in contact with the front frame 806 to close the insertion port 832 of the front panel 810. Further, the bent piece 818 of the lever 800 contacts the sliding surface 220 of the bucket plate 200, and the counterclockwise rotation of the lever 816 is restricted by the spring 816. Therefore, the second
The lid 808 is moved downward in the drawing by the lever 802, and is in a position retracted from the insertion port 832 of the front panel 810.

Here, when the magnetic sheet pack 10 is inserted from the insertion port 832, the magnetic sheet pack 10 is inserted into the first lid as shown in FIG.
Press 804 to move forward. The insertion position of the magnetic sheet pack 10 shown in FIG. 3 is the position pre-locked by the pre-lock mechanism provided in the bucket plate 200 described above.

When it is confirmed that the magnetic sheet pack 10 is pre-locked, the power loading of the magnetic sheet pack 10 is started. That is, first, as shown in FIG. 4, the magnetic sheet pack 10 moves forward with the bucket prelock 200 moving in the forward direction (direction of arrow A). At this time, the bent piece 818 of the lever 802 is the bucket pre-lock 20.
Slide on the horizontal sliding surface 220 formed on the
The 802 does not rotate. The magnetic sheet pack 1 shown in FIG.
The 0 position indicates the forward end at the time of power loading.

When the magnetic sheet pack 10 is loaded to the forward end, the magnetic sheet pack 10 then descends as the bucket plate 200 descends (moves in the direction of arrow B) as shown in FIG. Bucket plate 200
When is lowered, the sliding surface 220 that restricts the rotation of the lever 802 is also lowered, and the lever 802 is rotated counterclockwise by the spring 816. When the lever 802 rotates counterclockwise,
The second lid 808, which is engaged with the elongated hole 828 provided in the direction opposite to the bending piece 818 with respect to the rotation center of the lever 802 through the pins 824 and 826, is moved upward by the lever 802. . As a result, the insertion port 832 formed in the front panel 810 is closed by the second lid 808. The position of the magnetic sheet pack 10 in FIG.
Indicates the descending end, that is, the magnetic recording / reproducing position.

On the other hand, after the magnetic recording / reproduction is completed, the magnetic sheet pack 10
When taking out (at the time of unloading), the reverse operation to the above operation is performed. That is, the bucket plate 200 rises, and with this, the lever 802 rotates clockwise against the spring 816. As a result, the second lid 808 descends and the insertion opening 832 formed in the front panel 810 is opened. Then, the bucket plate 200 is retracted, and the magnetic sheet pack 10
Comes out from the insertion port 832 (see FIG. 3), and the magnetic sheet pack 10 is pushed out to a position where it can be taken out manually by releasing the above-mentioned prelock mechanism.
After that, pull out the magnetic sheet pack 10 by hand, and the first lid 804
The insertion port 832 is closed by.

In the present embodiment, the pivoting operation of the lever 802 is performed by the sliding surface 220 of the bucket plate 200 and the spring 816, but the present invention is not limited to this, and it may be performed in the direction orthogonal to the insertion direction of the magnetic sheet pack of the bucket plate 200. Any operation type may be used. For example, the bucket plate is provided with an elongated hole in the same direction as the insertion direction of the magnetic sheet pack, and the lever 802 is provided with a pin engaging with the elongated hole instead of the bent piece 818, thereby performing the same operation as above. You can In this case, the spring for urging the lever 802 is unnecessary. Further, in this embodiment, the magnetic sheet pack is used as the recording medium, but the present invention is not limited to this, and the present invention can be applied to other recording media.

〔The invention's effect〕

As described above, according to the lid opening / closing mechanism of the present invention, since the insertion opening is closed by the second lid during magnetic recording / reproducing, double insertion of the recording medium can be prevented. Further, since the second lid slides on the front panel in the direction orthogonal to the insertion direction of the recording medium, the insertion opening can be closed even if the amount of pulling in at the time of loading the recording medium is small. As a result, the device can be downsized.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing the entire structure of a magnetic recording / reproducing apparatus used in this embodiment, and FIG. 2 is a front view showing a state before inserting a magnetic sheet pack in an embodiment of a lid opening / closing mechanism according to the present invention. FIGS. 3 to 5 are views used to explain the operating state of the lid opening / closing mechanism, FIG. 6 is a plan view of the shutter opening / closing mechanism, and FIG. 7 is a pre-locking mechanism of the magnetic sheet pack. The plan views, FIGS. 8A, 8B, and 8C are views used for explaining the loading operation, and FIG.
Figure is a plan view of the magnetic sheet pack, and Figure 10 is A- in Figure 9.
It is sectional drawing which follows the A line. 10 …… Magnetic sheet pack, 200 …… Bucket plate, 2
20 …… Sliding surface, 802 …… Lever, 804 …… First lid, 808
...... Second lid, 810 ...... Front panel, 816 ...... Spring, 810
…… Bending piece, 832 …… Insertion port.

Claims (1)

[Claims] 1. A recording medium is inserted into a bucket through an insertion opening of a front panel, the bucket is moved in the same direction as the inserting direction of the recording medium, and then moved in a direction orthogonal to the inserting direction. In an apparatus for positioning the recording medium at a recording or reproducing position and recording or reproducing on the recording medium, the recording medium is rotatably disposed inside an insertion opening of the front panel,
A first lid biased by a spring to close the insertion opening; and a first lid slidably arranged with respect to the front panel so as to open or close the insertion opening of the front panel. The second lid is rotatably disposed on the main body of the apparatus, one end of which is engaged with the second lid and the other end of which is regulated by the bucket, and the bucket is moved in a direction orthogonal to the insertion direction. Second
An opening / closing mechanism for the lid, which comprises a lever for sliding the lid of.