JPH0240621Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a rotating magnetic sheet device, and particularly to a rotating magnetic sheet device used as a magnetic recording device or a reproducing device in an electronic still camera or the like.

[Background of the idea]

Recently, imaging devices such as solid-state image sensors and image pickup tubes,
In combination with a recording device that uses a magnetic disk, which is inexpensive and has a relatively large storage capacity, as a recording medium, the subject is still photographed purely electronically and recorded on a rotating magnetic sheet, and the images are played back using a separate television system or An electronic still camera system for use with printers and other devices has been developed and is attracting a lot of attention.

The magnetic sheets used in such systems are usually in the form of sheet packs. A magnetic sheet for magnetically recording still image information and the like is rotatably housed inside the sheet pack, and this sheet pack is used by being attached to a rotating magnetic sheet device incorporated in an electronic camera.

By the way, this type of sheet pack has a shutter that can be freely opened and closed on the window into which the magnetic head is inserted, and when the sheet is not inserted into a rotating magnetic sheet device for magnetic recording and reproduction, the window is closed by the shutter to prevent dust. It is used as a means. Such a shutter opens and closes in conjunction with the insertion and ejection of the sheet pack into the rotating magnetic sheet device. For example, in the rotating magnetic sheet device disclosed in the specification of Japanese Utility Model Application No. 58-94181, a holding lever with an engaging protrusion is provided on the side of the rotating magnetic sheet device, and when the seat pack is inserted, the engaging protrusion of the holding lever engages with the locking hole of the shutter to open the shutter in conjunction with the inserting operation of the seat pack, and close the shutter in conjunction with the ejecting operation of the seat pack.

On the other hand, some sheet packs are equipped with a locking mechanism to prevent the shutter from sliding open accidentally except during magnetic recording and reproduction.

[Purpose of invention]

The present invention can reliably open and close the shutter of a seat pack equipped with such a locking mechanism.
In particular, the object of the present invention is to propose a rotating magnetic sheet device in which the sheet pack is always ejected with the shutter closed even if the sheet pack is pulled out before being completely inserted.

[Summary of the idea]

In order to achieve the above object, the present invention has a shutter opening/closing device that, when a seat pack is inserted, releases a locking member provided on the seat pack for locking the shutter in the window closed position, and also moves the shutter to the window open position. a lock release part that opens; a shutter closing part that closes the shutter from a window open position to a closed position when the seat pack is ejected; and a shutter closing part that detects insertion or ejection of the seat pack and brings the shutter closing part into contact with or retreats from the shutter. It is characterized in that it is configured to operate integrally with the sheet pack detection section that causes the sheet pack detection.

〔Example〕

Preferred embodiments of the rotating magnetic sheet device according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows a plan view of a sheet pack used in a magnetic recording or reproducing device such as an electronic camera, and FIG. 2 is a sectional view thereof. As shown in FIG. 1, the 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 housed inside the sheet pack 10. magnetic sheet 1
2 has a center core 14 as a reinforcing member.
The center core 14 is exposed to the outside through a circular opening 16 of the seat pack 10. A window 18 in which a magnetic head, which will be described later, is located is opened in the seat pack 10, and this window 18 for the magnetic head is opened and closed by a slideable shutter 20. That is, the shutter 20 is bent into a substantially U-shape and is slidably attached to the seat pack 10 by sandwiching it from one side edge (the right side in FIG. 1). The shutter 20 closes the window 18 to prevent dust from adhering to the magnetic sheet 12 before the seat pack 10 is inserted into the inner bucket, which will be described later. The magnetic sheet 12 is then moved downward to open the head window 18, allowing recording and reproduction on the magnetic sheet 12.

As shown in FIG. 3, the seat pack 10 is provided with a locking member 21 for the shutter 20, and the locking member 21 is formed with a recess 21A. On the other hand, the shutter 20 is formed with a convex portion 20A that protrudes inward by cutting and raising. Lock member 21
has elastic force by itself, and is normally located in the side groove 10A of the seat pack 10, and when the shutter 20 is in the closed position, the convex portion 20A of the shutter 20 fits in and locks the shutter 20. In FIG. 1, a locking recess 22 is formed at the opposite end of the seat pack 10 from the shutter 20, and this recess 22 is used for temporarily securing the seat pack 10 when inserting it into an inner bucket as described later. . In addition, in the seat pack 10, a portion indicated by the reference numeral 10B is a direction indicating surface when inserting the seat pack.

FIG. 4 shows a rotating magnetic sheet device according to this embodiment, which is composed of a main body 24, an inner bucket 26, and an upper lid 28. First, the internal structure of the device body 24 will be explained. A motor 30 for driving a magnetic sheet is disposed inside the device body 24, and a drive shaft 32 of this motor 30 is connected to the center hole of the center core 14 of the sheet pack 10 shown in FIG. 15, and rotate the magnetic sheet 12 within the seat pack 10 at a predetermined number of rotations. Further, in FIG. 4, numeral 34 is a motor for feeding the magnetic head, numeral 36 is a lead screw connected to the output shaft of this motor 34, and numeral 38 is screwed into this lead screw 36, and a guide shaft 40.
The head carriage 42, which is guided and moved by the head carriage 42, is a magnetic head provided on the head carriage 38. Therefore, when the motor 34 is rotated at a predetermined number of revolutions, the head carriage 38 is moved at a predetermined pitch in the axial direction of the guide shaft 40 by the rotation of the lead screw 36, and therefore the magnetic head 42 is moved by the magnetic sheet 12. The magnetic sheet 12 moves in the radial direction (direction A in the figure).
Still image information can be recorded or reproduced on a track-by-track basis.

Brackets 44, 44 are provided at the ends of the device main body 24.
A pin 4 is provided in the brackets 44, 44.
The inner bucket 26 and the upper lid 28 are pivotally supported via the inner bucket 26 and the upper lid 28. The upper lid 28 is configured to have a shape capable of housing the inner bucket bag 26 as shown in the figure. Springs (not shown) are disposed between the main body 24 and the upper lid 28 and between the upper lid 28 and the inner bucket 26, so that when the upper lid 28 is open as shown in FIG.
6 separates from the apparatus main body 24 and the upper lid 28 to open the seat pack insertion opening 48 of the inner bucket bag 26.

The left end surface 26a of the inner bucket 26 in FIG.
A locking member 52 is swingably supported via a shaft 50 . This locking member 52 has a locking claw 54.
This locking claw 54 faces a locking hole 56 formed in the end surface 26a of the inner bucket 26. The locking hole 56 is connected to the seat pack 1.
It is formed at a position corresponding to the locking recess 22 of the seat pack 10 when the seat pack 10 is completely inserted into the inner bucket 26. This locking member 52 has a locking pawl 54 located within the locking recess 22 of the seat pack 10 to lock the seat pack 10 into the inner bucket 26.
moor within.

The other side end 26b of the inner bucket 26
is provided with a shutter opening/closing claw 60. That is, as shown in FIG. 5, the shutter opening/closing pawl 60 is provided to be able to swing freely around a shaft 62, and in FIG. ing. An opening 70 is formed in the tip 26b of the inner bucket 26 at a position corresponding to the tip contact portion 64, and the lock release portion 66
An opening 72 is formed at a position corresponding to the shutter closing portion 68, and an opening 74 is formed at a position corresponding to the shutter closing portion 68. Side end 2 of inner bucket 26
6b is provided with a torsion spring 76, and this spring 7
6, the shutter opening/closing pawl 60 is biased counterclockwise in FIG. 5 about the shaft 62. Therefore, before the shutter opening/closing pawl 60 comes into contact with the seat pack 10, the tip contact portion 64 protrudes from the opening 70 due to the biasing force of the spring 76, and the seat pack 10
The shutter closing portion 68 is removed from the opening 74 and is retracted from the insertion region of the seat pack 10.

The operation of the embodiment of the rotating magnetic sheet device according to the present invention constructed as described above is as follows. First, to load the seat pack 10, open the top lid 28 as shown in FIG.
into the inner bucket 26. When the seat pack 10 is inserted into the inner bucket 26,
The seat pack 10 is guided by both side edges of the inner bucket and inserted with the direction indicating surface 10B facing the upper right in FIG. When inserting the seat pack 10, before the tip contact portion 64 comes into contact with the direction indicating surface 10B of the seat pack 10, the shutter closing portion 68 is pressed against the seat pack 10 by the biasing force of the spring 76, as shown in FIG. Since it is retracted from the insertion area, it is in a non-contact state with the seat pack 10. When the seat pack 10 is inserted and the direction indicating surface 10B of the seat pack 10 comes into contact with the tip contact portion 64, and this tip contact portion 64 rides on the direction indicating surface 10B and comes into contact with the side edge of the seat pack 10, in this state, the shutter The opening/closing claw 60 rotates clockwise against the biasing force of the spring 76, and the shutter closing portion 68 fits into the holding hole 20B of the shutter 20. Seat pack 1
0 is further inserted, the lock release part 66 comes into contact with the lock member 21 shown in FIG. Part 2
Release the lock relationship with 0A. Therefore, in this state, the shutter 20 is not restrained by the lock member 21 and is in a free state.

When the seat pack 10 is pushed further in this state, the shutter 20 is free with respect to the seat pack 10, and the lock release part 66 of the shutter opening/closing pawl 60 is in contact with the upper end 23 of the shutter 20, so that the shutter 20 is moved forward as shown in FIG. As shown, only the shutter 20 is held by the lock release part 66 of the shutter opening/closing pawl 60, and the shutter 20 slides relatively on the side edge of the seat pack 10 until the seat pack 10 is completely inserted into the inner bucket 26. By being pushed in, the shutter 20 is completely opened.

When the seat pack 10 is completely inserted into the inner bucket 26, the seat pack 10 is temporarily secured within the inner bucket 26 by the locking pawl 54. Next, when the upper cover 28 is pushed down toward the main body 24 in this state, the center core 14 is attached to the drive shaft 32, and the magnetic sheet 12 is rotated by the drive shaft 32.

On the other hand, in order to eject the seat pack 10 from the inner bucket 26, the upper lid 28 is opened from the main body 24, and the seat pack 10 is moved downward in FIG. 5 by an eject mechanism (not shown). 25 The shutter closing portion 68 of the shutter opening/closing pawl 60 abuts, and the shutter 20 contacts the shutter closing portion 6 of the shutter opening/closing pawl 60.
8. The seat pack 10 is again slid relative to the side edges of the seat pack 10 and moved to the position of the window portion 18. In this position, as shown in FIG.
In this position, the shutter closing portion 68 is in the position where it has slid down from the retaining hole 20B of the shutter 20.
At this time, the lock release portion 66 is no longer pressed against the lock member 21. As a result, the locking member 21 is positioned again at the side edge 10A of the seat pack 10 due to its elastic force, and the shutter 2
The convex portion 20A of 0 fits into the concave portion 21A, and the shutter 20 is locked in the window closed position of the seat pack 10.

Next, the operation when the seat pack 10 is pulled out while being inserted into the inner bucket 26 will be described. When the seat pack 10 is inserted and the tip contact portion 64 rides on the direction indicating surface 10B, the shutter closing portion 68 first closes the shutter 20.
into the holding hole 20B. Therefore, even when the seat pack 10 is pulled out in the middle of insertion, the shutter 20 slides on the side edge of the seat pack 10 in the same way as when the seat pack 10 is pulled out from the fully inserted state, and the shutter 20 slides on the side edge of the seat pack 10. 1
Close 8. Therefore, even if the sheet pack 10 is pulled out while it is being inserted, the window 18 will not open and the sheet pack will not be ejected.

FIG. 7 shows the structure of another embodiment of the present invention. In FIG. 7, the same members as those in the embodiment shown in FIG. 5 are designated by the same reference numerals, and their explanations will be omitted. In FIG. 7, the shutter opening/closing claw 60
The rotation center hole is formed as an elongated hole 80, and the central axis 62 is located within the elongated hole 80. As a result, the shutter opening/closing pawl 60 as a whole is biased in one direction, that is, to the left in FIG.
0 is pressed in one direction by the tip contact portion 64 of the shutter opening/closing pawl 60 and the lock release portion 66 inside the inner bucket belt 26. This prevents the seat pack 10 from shaking inside the inner bucket 26, and the seat pack 10 is guided by the side edges of the inner bucket 26 during insertion and ejection operations into the inner bucket 26, and the locking pawl 5
4 or the shutter opening/closing pawl 60 will not occur.

In the embodiment described above, the lock releasing part 66 and the shutter closing part 68 were integrally formed on the shutter opening/closing pawl 60, but the lock releasing part 66 and the shutter closing part 68 were formed separately from the shutter opening/closing pawl 60. It may also be configured by being attached to the shutter opening/closing claw 60.

[Effect of idea]

As explained above, according to the rotating magnetic sheet device according to the present invention, the shutter opening/closing pawl has a lock release part that unlocks the locking member of the shutter and opens the shutter, and a position where the shutter is engaged with the shutter of the seat pack when the seat pack is inserted. Since the shutter closing part is provided to release the engagement with the shutter after the shutter is closed in conjunction with the ejection operation when the sheet pack is ejected, it is possible to prevent the sheet pack from being pulled out during insertion from the rotating magnetic sheet device. However, since the shutter is always engaged with the shutter closing portion of the shutter opening/closing pawl, the sheet pack is never ejected from the rotating magnetic sheet device with the shutter open.

[Brief explanation of drawings]

Fig. 1 is a plan view of the seat pack used in this embodiment, Fig. 2 is a sectional view of the seat pack, Fig. 3 is a partially enlarged sectional view showing the locking member of the seat pack, and Fig. 4 is the entire rotating magnetic sheet device. FIGS. 5 and 6 are perspective views showing the structure, and FIGS. 5 and 6 are sectional views showing the main parts of this embodiment. FIG. 7 is a sectional view showing the main parts of another embodiment. 10... Sheet pack, 12... Magnetic sheet,
14... Center core, 20... Shutter, 21...
... Lock member, 24 ... Main body of rotating magnetic sheet device, 26 ... Inner bucket, 28 ... Top lid, 6
0...Shutter opening/closing claw, 64...Tip contact portion, 6
6...Lock release part, 68...Shutter closing part,
76...Spring.

Claims (1)

[Claims for Utility Model Registration] A bucket for receiving a seat pack, which has a window into which a magnetic head is inserted and a shutter for opening and closing this window, and the shutter is opened by inserting the seat pack into the bucket. and a shutter opening/closing device for closing the shutter by discharging the sheet pack from a bucket, wherein the shutter opening/closing device moves the shutter provided on the seat pack to a window closed position. a lock release part that releases a locking member for locking the window and opens the shutter to the window open position; and a shutter closer that fits into a holding hole of the shutter and closes the shutter from the window open position to the closed position. and a seat pack detection unit that detects the insertion or ejection of the seat pack and brings the shutter closing unit into contact with or retreats from the shutter, and when the magnetic seat pack is inserted, the shutter closing unit stops holding the shutter. A rotating magnetic sheet device characterized in that a locking member is fitted into a hole and then a locking member releases the locking member.