JPS61192065A - Magnetic sheet pack loading/unloading device - Google Patents

Abstract

PURPOSE:To obtain good timing for the movement of a bucket and a regulating board holder well by moving the bucket and the regulating board holder while regulating them by the first and second gears so that guide pins of the bucket and regulating board move along a guide. CONSTITUTION:In order to take out a magnetic sheet pack 10, the second gear 74 is rotated counterclockwise around a spindle 75, and consequently a guide pin 56 of a regulating board holder 28 moves upward along a longitudinal groove 70 of a side plate and the regulating board holder 28 is released from a window and recedes upward. Simultaneously a guide pin 54 of a bucket 26 is positioned in a regulating groove 73 of the first gear 71, and moved to a transverse groove 68A from a longitudinal groove 68B under the control of the regulating groove 73, and the bucket 26 moves upward as well as vertically to the right so as to return the position where the magnetic sheet pack 10 is inserted and taken out. Thus, by setting the gear ratio of the two gears 71 and 74 to an appropriate value, the timing of the movement of the bucket 26 and the regulating board holder 28 can be set and the both can be prevented from collision.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a device for attaching and detaching a magnetic sheet pack, and is particularly used for a magnetic recording or reproducing device such as an electronic camera, and is used for a magnetic sheet on which still image information, etc. is magnetically recorded. This invention relates to a magnetic sheet pack attachment/detachment device with a built-in magnetic sheet pack.

[Background of the invention]

Recently, imaging devices such as solid-state image sensors and image pickup tubes are combined with recording devices that use magnetic disks, which are inexpensive and have a relatively large storage capacity, to take purely electronic still photographs of subjects using rotating magnetic disks. An electronic still camera system has been developed in which images are recorded on the camera and the images are played back using a separate television system or printer.

The magnetic disks used in such systems are usually in the form of magnetic sheet packs. A magnetic sheet pack rotatably stores a magnetic sheet for magnetically recording still image information, etc., and this magnetic sheet pack can be used in a magnetic recording device built into an electronic camera or a playback device that is integrated with or separate from the magnetic sheet pack. It is installed and used.

In an image recording or reproducing system using such a magnetic sheet, a magnetic sheet with a diameter of about 50H1 is used,
Further, in this magnetic sheet, a recording pattern of 1 track to 52 tracks is formed at high density from the outer circumferential side to the inner circumferential side. In such a rotating magnetic sheet device, the feeding pitch of the magnetic head is about 100 μm, which is much smaller than the feeding pitch of a normal floppy disk.
Therefore, the magnetic head must be moved with extremely high precision.

Unlike ordinary floppy disks, the magnetic sheets used in such electronic cameras record at high density and rotate at high speed, so the head touch is also different from ordinary floppy disks, where the disk is pressed against the magnetic head side with a pad. . That is, in the case of electronic cameras, etc., a regulating plate with a recess is placed on the opposite side of the magnetic head across the magnetic sheet, and by positioning the regulating plate at a predetermined position relative to the magnetic head, the magnetic sheet can be adjusted. along the magnetic head. Due to the effect of this regulating plate, the rotational torque can be reduced compared to the case of pressing with a pad of a normal Fronbi disk.

By the way, in such a rotating magnetic sheet device, the timing of movement of the bucket and regulating plate poses a problem. That is, as will be described later, in this type of magnetic sheet pack, a shutter that can be freely opened and closed is provided in the opening, and the head and regulating plate face the magnetic sheet surface exposed from the opening when the shutter is open from both sides. Therefore, it is preferable that the regulating plate be guided so as to be positioned in the opening after the shutter of the magnetic sheet in the bucket is opened and the regulating plate is attached to the center core rotation drive shaft of the magnetic sheet.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and when loading a magnetic sheet pack into a magnetic recording/reproducing device, the center core of the magnetic sheet is mounted on the rotational drive shaft, and then the regulating plate is inserted into the opening of the magnetic sheet pack. The purpose of this paper is to propose an attachment/detachment device for a magnetic sheet pack located at the

[Summary of the invention]

In order to achieve the above object, the present invention provides a bucket for storing the magnetic sheet pack, a regulating plate located at a position facing the magnetic head of the magnetic sheet during magnetic recording and reproduction, and a first guide bin for guiding the guide bin of the bucket. a side plate formed with a second guide portion that guides the guide portion and the guide bin of the regulation plate; a first gear that moves the guide bin of the bucket along the first guide portion of the side plate; and a first gear that meshes with the first gear; and a second gear for moving the guide bin of the regulation plate along the second guide portion of the side plate, and by rotating the first and second gears, the center core of the magnetic sheet moves the bucket to the rotation drive shaft. The regulating plate holder is configured to guide the regulating plate holder to a position where the regulating plate holder is fitted with the magnetic sheet, and to position the regulating plate holder at a position facing the magnetic head of the magnetic sheet.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the magnetic sheet pack attaching/detaching device according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 12 shows a plan view of a magnetic sheet pack used in a magnetic recording or reproducing device such as an electronic camera.
3 is a sectional view taken along line A-A'g in FIG. 12. As shown in FIG. 12, 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 housed inside. 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 puncture 10.

A center hole 15 is formed in this center core 14, and an elastic piece (not shown) is formed in this center hole 15, and a drive shaft 32, which will be described later, resists the urging force of this elastic piece.
It is designed to fit into the center hole 15 of. The magnetic sheet pack 10 has a window 18 in which a magnetic head, which will be described later, is located.
A and a window 18B where the regulating plate is located are open, and these windows 18A and 18B are opened and closed by a slideable shutter 20. That is, the shutter 20 is the magnetic sheet pack 1
Before 0 is inserted into the bucket described later, a window 18A,
18B is closed to prevent dust from adhering to the magnetic sheet 12, and when the magnetic sheet 12 is inserted into a bucket (to be described later), it is locked by a claw provided on the bucket and the shutter 20 moves downward in FIG. 12 to close the window. By opening 18A and 18B, recording and reproduction on the magnetic sheet 12 becomes possible. Magnetic sheet pack 10
A locking recess 22 is formed at the opposite end of the shutter 20, and this recess 22 is used for temporarily securing the magnetic sheet puncture 10 when it is inserted into a bucket, which will be described later.

FIG. 1 shows an overall perspective view of the magnetic recording and reproducing apparatus, and the magnetic recording and reproducing apparatus is composed of a main body 24, a bucket 26, and a regulating plate holder 28 as main members. 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 core 14 of the magnetic sheet pack 10 shown in FIG. The magnetic sheet 12 is fitted into the center hole 15 and rotated at a predetermined number of rotations within the magnetic sheet pack IO. Further, in FIG. 1, 34 is a motor for feeding the magnetic head, 36 is a lead screw connected to the output shaft of this motor 34, and 38 is threaded onto this lead screw 36 and guided by a guide shaft (not shown). The head carriage 42 to be moved is a magnetic head provided on the Herad 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 lead screw 36 by the rotation of the lead screw 36, and thereby the magnetic heald 42 is moved at a radius of the magnetic sheet 12. The still image information can be magnetically recorded or reproduced on the magnetic sheet 12 one trunk at a time. 4
Reference numerals 4, 44, and 44 are positioning support pins for a regulating plate holder, which will be described later, and 46, 46, and 46 are positioning pins for the magnetic sheet pack 10.

The bucket 26 is connected to the magnetic sheet pack 1 as shown in FIG.
0, and an opening 52 is formed in the center thereof, into which a regulating plate, a drive shaft 32 on the main body 24 side, a magnetic head 42, etc., which will be described later, can be inserted. Further, guide pins 54,54 are provided projecting from the side edges 50,50 of the bucket 26 on each side. The guide pins 54 , 54 are guided by a pair of side plates and a first gear, which will be described later, and move the bucket 26 parallel to the device main body 24 side with the magnetic sheet pack attached, as well as raise and lower it. The center core 14 is connected to the drive shaft 3
Guide it to the position where it mates with 2.

Similar to the bucket 26, the regulation plate holder 28 has guide pins 56, 56 protruding from both sides thereof.
．． Similar to the guide pins 54 and 54 of the bucket 26, the regulating plate holder 28 is guided by a side plate and a second gear, which will be described later, to move the regulating plate holder 28 up and down with respect to the main body 24. Regulation plate holder 28
A regulating plate 64 is provided on the back surface of the magnetic disc 12, and this regulating plate 64 has the function of aligning the magnetic sheet 12 along the magnetic helad 42 side when the magnetic helad 42 performs magnetic recording and reproduction on the magnetic sheet 12.

A pair of side plates 66, 66 are attached to the device main body 24. A guide groove 68,70 is formed in each side plate 66,66. The guide groove 68 is composed of a horizontal groove 68A and a vertical groove 68B following the horizontal groove 68A, and has an oval shape as a whole. Further, the guide groove 70 is formed in the vertical direction in FIG.
1 (only one is shown) is rotatably supported around a shaft 72 protruding from the side plate 66. A radial regulating groove 73 into which the guide pin 54 of the bucket 26 is fitted is formed in the first gear 71 . A second gear 74.74 (only one gear is shown) that meshes with the first gear 71 is rotatably supported on the side plate 66.66 about a shaft 75 projecting from the side plate 66. This second gear 74 has a radial regulating groove 76 into which the guide pin 56 of the regulating plate holder 28 is fitted.
is formed. The first gear 71 meshes with a reduction gear 77, and this reduction gear 77 meshes with a gear 79 of a motor 78. Therefore, the rotational force from the motor 78 is transmitted to the first and second gears 71 and 74. As mentioned above, each side plate 6 is attached to the first and second gears 71 and 74.
6.66, and a pair of first and second gears 71.
74 rotates in synchronization to move the bucket 26 and regulating plate 28 up and down at a predetermined timing, as will be described later.

The operation of the magnetic sheet pack attaching/detaching device according to the present invention configured as described above is as follows. First, when the magnetic seat back 10 is inserted into the bucket 26, the magnetic seat pack 10 is temporarily fixed within the bucket 26 as described above, and at this time, the shutter 20 of the magnetic seat back 10 is opened and the window of the magnetic seat pack 10 is opened. Portions 18A and 18B are open. At this time, the guide pin 54 of the bucket 26 is located at the right end of the lateral groove 68A of the side plate 66, as shown in FIG.
Further, the guide pin 56 of the regulation plate holder 28 is located at the upper end of the guide groove 70 of the side plate 66 and is located radially outside the regulation groove 76 of the second gear 74. From this state, the first
When the gear 71 rotates counterclockwise around the shaft 72, the guide pin 54 of the bucket 26 engages with the regulation groove 7 of the first gear 71.
3 and moves to the left in the lateral groove 68A, the bucket 26 moves horizontally to the left in FIG. Thereafter, when the guide pin 54 moves into the vertical groove 68B of the side plate 66, the bucket 26 descends toward the main body 24 of the apparatus as shown in FIG. 3, and the center core 14 of the magnetic sheet pack 10 is attached to the drive shaft 32. . Such a movement locus of the bucket 26 is shown by A in FIG.

On the other hand, when the first gear 71 rotates counterclockwise, the second gear 74 that meshes with the first gear 71 rotates clockwise, and the guide pin 56 of the regulating plate holder 28 engages the regulating groove 74 of the second gear 74. move. As a result, the guide pin 56 of the regulating plate holder 28 is inserted into the guide groove 7 of the side plate 66 as shown in FIG.
0, the regulation vi64 is located within the window 18B of the magnetic sheet pack 10, and the magnetic head 4
It will come to the position corresponding to 2. The movement locus of such a regulating plate holder 2B is shown by B in FIG. 4.

To take out the magnetic sheet pack IO, the above operation is reversed. That is, when the second gear 74 is rotated in the opposite direction, that is, counterclockwise around the shaft 75, the guide pin 56 of the regulating plate holder 28 first moves up the vertical groove 70 of the side plate 66, and as a result, the regulating plate holder 28 moves upward. Window part 1 of magnetic sheet pack 10
Pull out from 8B and evacuate upwards. bucket 2 at the same time
The guide pin 54 of No. 6 is located in the regulation groove 73 of the first gear 71, and under the regulation of this regulation groove 73, the guide pin 54 moves in the opposite trajectory to the above, that is, from the vertical groove 68B to the horizontal direction. ! 468A, and along with this, the bucket 26 also moves upward and horizontally to the right, returning to the insertion and removal position of the magnetic sheet pack 10 shown in FIG.

In this way, according to the first embodiment, the bucket 726 and the regulating plate holder 28 are moved by the two gears 71.74, so the gear ratio of the two gears 71.74 is set appropriately. By doing this, the timing of the movements of the bucket 26 and the regulating plate holder 28 can be adjusted to prevent them from colliding with each other.

FIG. 5 shows the structure of a second embodiment of the magnetic sheet pack attaching/detaching device according to the present invention. In the second embodiment, the same or similar members as in the first embodiment shown in FIGS. 1 to 3 are given the same reference numerals, and detailed explanation thereof will be omitted. The second embodiment shown in FIG. 5 differs from the first embodiment in the shape of the regulation a73 of the first gear 71;
The shape of the regulation groove 76 of the second gear 74 has changed. That is, as shown in FIG. 5, the regulating groove 73 of the first gear 71 has a radial groove 73A and a circumferential groove 73A following the radial groove 73A. 73
The regulating groove 76 of the second gear is composed of a circumferential groove 76A and a radial groove 7613 following the circumferential groove 76A. The movement of the bucket 26 and the regulating plate holder 28 in the second embodiment will be explained according to FIGS. 6(A), (B), and (°C). First, as shown in FIG. 6(A), when the first gear 71 rotates counterclockwise, the bucket 2
The guide pin 54 of the bucket 2 is initially located outside the radial groove 73A, and the guide pin moves in the lateral groove 68A of the side plate 66 while being regulated by the radial groove 73A.
6 moves horizontally. At the same time, the second gear 74 is engaged with the first gear 71 and rotates clockwise, but the pin 56 of the regulating plate holder 28 is connected to the circumferential groove 74 of the second gear 74.
Since it is located at A, the vertical position of the bin 56 does not change, and therefore the regulating plate holder 28 remains stationary.

As the rotation of the first gear progresses and the guide pin 54 begins to descend in the vertical groove 68B of the side plate 66, the bucket 26 also descends, and the magnetic sheet pack 10 inside the bucket 26 is attached to the drive shaft 32. Further, as the first gear rotates counterclockwise, the second gear 74 also rotates clockwise, but as described above, the guide pin 56 is located in the circumferential groove 76A, and therefore, the regulating plate 28 is at a stationary position during this time as well. When located at the innermost side of the radial groove 73A of the guide pin 54, the guide pin 56 approaches the entrance of the radial groove 76B of the regulation groove 76. FIG. 6(B) shows this state.

Next, when the first gear 71 and the second gear 74 further rotate, the guide pin 54 of the bucket 26 moves into the circumferential groove 7 of the first gear 71.
3B, there is no change in the vertical direction, and the magnetic sheet pack 10 remains attached to the drive shaft 32. The second gear 7 rotates as the first gear 71 rotates.
4, the guide pin 56 is positioned in the radial groove 76B of the second gear 74, so it begins to gradually descend.
It begins to descend along the guide groove 70 of the side plate 66. At the lowest end position of the guide groove 76, the regulation plate 64 is located at the opening of the magnetic sheet pack 10. FIG. 6(C) shows this state. The movement of the bucket 26 is shown at A in FIG. 7, and the movement of the regulating plate 28 is shown at B in FIG. In this state, the magnetic head 42 enters a reproduction state.

Also, in order to take out the magnetic sheet pack 10, refer to the above-mentioned FIG.
), (B), and (C) are performed. That is, when the first and second gears are rotated in the opposite direction, the second gear 7
FIG. 6(C) shows that only the guide pin 56 of the regulating plate holder 28 located in the radial groove 76B of No. 4 rises and leaves the magnetic sheet pack 10. On the other hand, while the regulating plate holder 28 is moving, the guide pin 54 of the bucket 26 is located in the circumferential groove 73B and does not move, and the center core 14 of the magnetic sheet 12 is attached to the rotation drive shaft 32.

When the upward movement of the regulating plate holder 28 is completed, the bucket 2
The guide pin 54 of No. 6 is inserted into the radial groove 73A of the first gear 71.
As the first gear rotates further, the bucket 26 begins to ascend the longitudinal groove 68B of the side plate 66, and the center core 14 of the magnetic sheet 12 begins to separate from the drive shaft 32 (FIG. 6B).

The guide pin 54 of the bucket 26 is connected to the vertical groove 68B of the side plate 66.
1 and the horizontal groove 68A, the bucket 26 moves upward and horizontally, and returns to its original position. While the bucket 26 is rising and moving horizontally, the bin 56 of the regulating plate holder 28 is located in the circumferential groove 76A of the first gear 74, so it does not move and remains stationary, as shown in FIG. 6(A).

According to the second embodiment, the regulation groove 73 of the first gear 7I and the second
By changing the shape of the regulation groove 76 of the gear 74, the timing of the bucket 26 and the regulating plate holder 28 in a stationary state can be determined, and furthermore, collisions between the bucket 26 and the regulating plate holder 28 can be prevented from occurring, in addition to the first embodiment. be able to.

FIG. 8 shows a third embodiment of the magnetic sheet pack attachment/detachment device according to the present invention. The third embodiment is different from the second embodiment in that a push pin 80 is provided on the regulating plate holder 28.1, when the magnetic sheet 12 is attached, a center core pushing operation is performed to securely hold the center core 14 of the magnetic sheet 12. It is intended to be mounted on the rotational drive shaft 32. In FIG. 9, the mounting structure in the vicinity of the push bottle 80 is shown. The holding plate 81 is attached to the regulating plate holder 28 with four screws 82 and 82.
．． Attached via 82.82. Regulation plate holder 28
A spring 84.84.84.84 is interposed between the holding plate 81 and the holding plate 81, and the holding plate 81 is elastically supported with respect to the regulating plate holder 28.

Further, the regulating plate 64 is attached to the back surface of the holding plate 81 configured in this manner. A circular hole 86 is formed in the holding plate 81, and a regulating plate holder 28 is installed at a position corresponding to the circular hole 86.
The push pin 80 is provided to protrude downward from the back surface of the holder. Furthermore, in the third embodiment configured as described above, in which positioning holes 88, 88, 88 are formed in the holding plate 81, the gears 71, 74 rotate, and the magnetic sheet pack 10 is mounted on the rotary drive shaft 32. At the same time, the regulation plate holder 28 descends. When the regulating plate holder 28 descends, the holding plate 81 provided on the back side of the regulating plate holder 28 first touches the support pin 44.
．． 44.Abuts on 44. The first and second gears 7 in this state
FIG. 1O (A) shows the positional relationship of 1.74. As can be seen from FIG. 10(A), the bar fitting 26 does not move because the guide pin 54 is located in the circumferential groove 73B, while the guide pin 56 of the regulating plate holder 28 is in the radial groove 76B. It is located near the vertical groove 70 of the side plate 66. When the first and second gears 71 and 74 rotate slightly counterclockwise and clockwise from this state, the retaining plate 81 does not descend because it is in contact with the support pin 44, but the retaining plate 81 and the elastic The adjusting plate holder 28 connected to the adjusting plate holder 28 moves down slightly against the biasing force of the spring 84, and the push pin 80 provided on the back side of the adjusting plate holder 28 directs the center core 14 of the magnetic sheet 12 toward the drive shaft 32. to securely attach the center core 14 to the drive shaft 32. At this time, the pin 90 provided on the second gear 74 closes the switch 92, the motor rotates in the opposite direction, and the gear rotates back to the position shown in FIG. 10(A). This position becomes the magnetic recording and reproducing position by the magnetic hand 42.

In the third embodiment, the movement of the bucket 26 is
The movement of the regulating plate 64 is shown at B in FIG. 11.

As described above, according to the third embodiment, the regulating plate holder 28
By installing a center core push pin 80 on the back surface of the magnetic recording head, the center core 14 can be pushed toward the drive shaft 32 by over-rotating the first and second gears 71.7.4 from their normal magnetic recording and reproducing positions. Bucket 26 and regulating plate 64
In addition, the center core 14 of the magnetic sheet 12 can be reliably mounted on the drive shaft 32.

〔Effect of the invention〕

As explained above, according to the magnetic sheet pack attachment/detachment device according to the present invention, the device main body is provided with a pair of side plates, and the side plates constitute a guide portion that guides the bucket and the guide pin of the regulating plate holder. Since the bucket and the regulating plate holder are moved while being regulated by the first and second gears so that the guide pin with the regulating plate holder is aligned with this guide part, the movement of the bucket and the regulating plate holder is done in a timely manner. be able to.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing the overall structure of the magnetic recording/reproducing device used in this embodiment, Fig. 2 is a side view showing the insertion and removal positions of the magnetic sheet pack of this embodiment, and Fig. 3 is an exploded perspective view showing the overall structure of the magnetic recording/reproducing device used in this embodiment. FIG. 4 is an explanatory diagram showing the positional relationship between the bucket and the regulation plate, FIG. 5 is a side view showing the second embodiment of the present invention, and FIG. 6 is (A )
, (B), and (C) are explanatory diagrams showing the movement of the guide pins of the bucket and the regulating plate, and FIGS. 7(A) and (B) are explanatory diagrams showing the positional relationship between the bucket and the regulating plate in the second embodiment. , Figure 8 (A
), (B) is a front sectional view of the third embodiment, FIG. 9 is an exploded perspective view of the regulating plate mounting structure of the third embodiment, and FIG. 10<A), (
B) is an explanatory diagram showing the operation of the third embodiment, FIG. 11(A)
, (B) is an explanatory diagram showing the positional relationship between the bucket and regulating plate of the third embodiment, FIG. 12 is a plan view of the magnetic sheet pack used in this embodiment, and FIG. It is a sectional view of the magnetic sheet pack along the A line. DESCRIPTION OF SYMBOLS 10... Magnetic sheet pack, 12... Magnetic sheet, 14... Center core, 24... Main body of magnetic recording or reproducing device, 26... Bucket,
28... Regulating plate holder, 32... Drive shaft, 4
2... Magnetic head, 54... Guide pin of bucket, 56... Guide pin of regulating plate holder, 6
4... Regulation plate, 66... Side plate, 68.70...
Guide groove, 71...First gear, 73...First gear regulation groove, 74...Second gear, 76...Second
Gear regulation groove. Figure 2 Figure 4 Figure 5 Figure 6 Figure 7 t Darkness Figure 8 (B) Figure 9 Figure 11 Figure 12 Figure 13

Claims (1)

[Claims] In a magnetic recording and reproducing device that performs magnetic recording or reproduction on a magnetic sheet rotatably housed in a magnetic sheet pack, a bucket that stores the magnetic sheet pack is located at a position facing a magnetic head of the magnetic sheet during magnetic recording and reproduction. a regulating plate and a first guide pin for guiding the bucket;
a side plate formed with a second guide part that guides the guide pin of the guide part and the regulating plate; a first gear that moves the guide pin of the bucket along the first guide part of the side plate; and a first gear that meshes with the first gear. , a second gear for moving the guide pin of the regulating plate along the second guide portion of the side plate,
By rotating the first and second gears, the bucket is guided to a position where the center core of the magnetic sheet engages with the rotational drive shaft, and the regulating plate is positioned at a position facing the magnetic head of the magnetic sheet. A magnetic sheet pack attaching/detaching device characterized in that it is configured to guide a regulating plate holder.