JPH0222840Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotating magnetic sheet device, and more 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.

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 that uses a printer has been developed and is attracting a lot of attention.

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

By the way, in order to achieve high reliability in recording and reproducing in this type of rotating magnetic sheet device, the magnetic head must be stably brought into contact with the magnetic sheet rotating at high speed. For this reason, a regulating plate is conventionally provided on the side facing the magnetic head across the magnetic sheet, and the magnetic sheet is brought into stable contact with the magnetic head by air flow between the regulating plate and the magnetic sheet. However, if this regulation plate is tilted, the distance between the regulation plate and the magnetic head is not within a predetermined dimension, or if the regulation plate is deviated from a predetermined position with respect to the magnetic head, the regulation plate cannot be adjusted. The effect of the board cannot be expected.

The present invention was developed in view of the above circumstances, and provides a rotating magnetic sheet device that can position the regulation plate at a predetermined position relative to the magnetic head in order to stably align the magnetic sheet with the magnetic head. The purpose is to make suggestions.

In order to achieve the above object, the present invention provides at least two positioning reference parts on both side walls of the main body of a rotating magnetic sheet device to position the regulating plate at a predetermined position, and furthermore, at least three height points on the both side walls. The magnetic head is characterized in that a regulation reference portion is provided to maintain a predetermined distance between the regulation plate and the magnetic head.

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 magnetic sheet pack used in a magnetic recording or reproducing device such as an electronic camera, and FIG. 2 is a sectional view taken along the - line in FIG. As shown in FIG. 1, the magnetic sheet pack 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 magnetic sheet pack. A center core 14 as a reinforcing member is provided in 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. The magnetic sheet pack 10 has an open window 18 in which a magnetic head, which will be described later, is located.
is opened and closed by a slideable shutter 20. That is, the shutter 20 is a magnetic sheet pack 10.
Before the magnetic sheet pack 10 is inserted into the inner bucket, which will be described later, the window 18 is closed to prevent dust from adhering to the magnetic sheet 12. When the magnetic sheet pack 10 is inserted into the inner bucket, the shutter 20 is moved downward in FIG. The magnetic sheet 12 is moved to open the head window 18, and recording and reproduction on the magnetic sheet 12 becomes possible. A locking recess 22 is formed at the end of the magnetic sheet pack 10 opposite to the shutter 20, and this recess 22 is used for temporarily securing the magnetic sheet pack 10 when it is inserted into an inner bucket as described later.

FIG. 3 shows this embodiment, which includes a main body 24 and an inner bucket 2 of a rotating magnetic sheet device.
6. It is composed of an upper lid 28. First, the internal structure of the device main body 24 will be explained.
A motor 30 for driving the magnetic sheet is disposed within the magnetic sheet pack 10, and the drive shaft 32 of this motor 30 is fitted into the center hole 15 of the center core 14 of the magnetic sheet pack 10 shown in FIG. 12 at a predetermined number of rotations. Further, in FIG. 3, 34 is a motor for feeding the magnetic head, and 36 is a motor for feeding the magnetic head.
is a lead screw connected to the output shaft of this motor 34; 38 is an arm that is screwed into this lead screw 36 and is guided and moved by a guide shaft 40; and 42 is provided on the arm 38. It is a magnetic head. Therefore, when the motor 34 is rotated at a predetermined number of revolutions, the arm 38 is moved at a predetermined pitch in the axial direction of the guide shaft 40 by the rotation of the lead screw 36.
Therefore, the magnetic head 42 moves in the radial direction of the magnetic sheet 12 (direction A in the figure) and can record or reproduce still image information on the magnetic sheet 12 track by track.

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. As shown in the figure, the upper lid 28 is configured to have a shape that allows the inner bucket bag 26 to be housed therein. A spring (not shown) is disposed between the main body 24 and the upper lid 28 and between the upper lid 28 and the inner bucket 26, so that the lid 2
8 is open, the inner bucket 26
is separated from the apparatus main body 24 and the top lid 28 to open the magnetic sheet 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 hole 54.
This locking pawl 54 faces a locking hole 56 formed in the end surface 26a of the inner bucket 26. The locking hole 56 is formed at a position corresponding to the locking recess 22 of the magnetic seat pack 10 when the magnetic sheet pack 10 is completely inserted into the inner bucket bag 26. This locking member 52
The locking pawl 54 is located within the locking recess 22 of the magnetic sheet pack 10 to lock the magnetic sheet pack 10 within the inner bucket bag 26.

On the back surface of the upper lid 28, plate springs 58, 58 bent into a crank shape are provided at a predetermined interval, and a regulating plate holder 60 is attached to the plate springs 58, 58. The regulating plate holder 60 has a length corresponding to substantially the entire width of the main body 24, and the regulating plate holder 60 is further provided with a regulating plate 62 at a position facing the magnetic head 42 when the top cover 28 is closed. The regulation plate 62 has a groove 64 formed in the direction of movement of the magnetic head 42. On the other hand, in FIG. 3 of the main body 24, a pin 68 is installed on the left side wall 66, and a pin 72 is installed on the right side wall 70. The pins 68 and 72 are pins for positioning the regulating plate 62, and are inserted into the holes 74 and 76 of the regulating plate holder 60 when the top cover 28 is closed to position the regulating plate 62 at a predetermined position with respect to the moving direction of the magnetic head 42. do. Note that the holes 74 and 76 may be formed into elongated holes to provide relief to the regulation plate holder 60 supported by the leaf springs 58 and 58.

Further, a receiving pin 78 is installed on the left side wall 66, and receiving pins 80, 82 are installed on the right side wall 70. The receiving pins 78, 80, 82 are attached to the upper lid 28.
When the magnetic head 42 is closed, its upper surface abuts near both ends of the regulation plate holder 60, regulating the height of the regulation plate 62 so as to maintain a predetermined distance from the magnetic head 42. Furthermore, the third
In the figure, the positioning pins 68, 72 and the height regulating pins 78, 80 are formed at the same location, but these may be formed separately and their locations may be changed.

The operation of the embodiment of the rotating magnetic sheet device according to the present invention constructed as described above is as follows. First, in order to load the magnetic sheet pack, the magnetic sheet pack 10 is inserted into the inner bucket bag 26 with the top lid 28 in the open state shown in FIG. Next, when the top 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 becomes rotatable by the drive shaft 32. Further, as shown in FIG.
8 and 72 are inserted to position the regulating plate 62 at a predetermined position. At the same time, pins 78, 80, 82
comes into contact with the regulating plate holder 60 to regulate the height of the regulating plate 62. In this case, since the regulating plate holder 60 is elastically supported by the upper lid 28 via the leaf spring 58, it is pressed against the pins 78, 80, 82 and can be moved to a predetermined position. Also,
The pins 78, 80, 82 are connected to both side walls 6 of the main body 24.
6 and 70, the regulating plate holder 60
can be received over a long distance (between both walls). As a result, even if height variations occur between the pins 78, 80, and 82 and the regulating plate holder 60 is tilted, the regulating plate 62 itself, which has a smaller area than the regulating plate holder 60, will tilt. The amount is small, and therefore the magnetic sheet 12 can be brought into stable sliding contact with the magnetic head 42.

In the embodiment, the regulating plate holder 60 and the regulating plate 62
The regulating plate holder 60 and the regulating plate 62 were formed separately and then fixed together.
and may be formed integrally.

As explained above, according to the rotating magnetic sheet device according to the present invention, at least two positioning reference portions are provided on both side walls of the main body of the rotating magnetic sheet device to position the regulating plate at a predetermined position, and furthermore, the regulating plate is positioned at a predetermined position. Since at least three height regulating reference portions are provided in the magnetic head to maintain a predetermined distance between the regulation plate and the magnetic head, the magnetic sheet can be brought into stable sliding contact with the magnetic head.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the magnetic sheet pack used in this embodiment, Fig. 2 is a sectional view of the magnetic sheet pack taken along the - line in Fig. 1, and Fig. 3 is a perspective view showing the overall structure of this embodiment. FIG. 4 is a sectional view of this embodiment with the top lid closed. DESCRIPTION OF SYMBOLS 10... Magnetic sheet pack, 12... Magnetic sheet, 14... Center core, 24... Main body of rotating magnetic sheet device, 26... Inner bucket, 28...
...Top lid, 32... Drive shaft, 58... Leaf spring, 60
...Regulation plate holder, 62 ...Regulation plate, 66, 70
... Side wall, 68, 72 ... Positioning pin, 7
8, 80, 82...Height regulation pins.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A main body in which a rotational drive source and a magnetic head are arranged, a lid pivotably supported on the main body so as to be able to open and close freely, and a lid that is supported by the main body or the lid and that opens when the lid is opened. A magnetic sheet pack with a built-in magnetic sheet can be inserted, and when the lid is closed, the magnetic sheet inside the magnetic sheet pack is connected to the drive shaft of the rotational drive source to rotate the magnetic sheet, and an inner bucket belt is attached to the lid via an elastic body. A regulating plate provided on the regulating plate holder and positioned opposite to the magnetic head when the lid is closed to align the magnetic sheet along the magnetic head; , at least two positioning pins provided on both side walls of the main body located on both sides of the rotational drive source to position the regulation plate at a predetermined position relative to the magnetic head when the lid is closed; and on both side walls of the main body in the direction of movement of the magnetic head. At least three height controls are provided on both side walls of the main body located on both sides of the magnetic head and the rotational drive source, and are in contact with the regulating plate holder when the lid is closed to maintain a predetermined distance between the regulating plate and the magnetic head. A rotating magnetic sheet device comprising: a pin; (2) The rotating magnetic sheet device according to claim 1, wherein the positioning pin is coaxial with the height regulating pin.