JPS6129451A - Attaching and detaching device of magnetic sheet pack - Google Patents

Abstract

PURPOSE:To mount surely a center core to a rotary drive shaft by guiding a depressing member to a position where the pressing member is not brought into contact with the center core of the magnetic sheet via a position where the pressing member depress the center core of the magnetic sheet. CONSTITUTION:The pressing member, e.g., a pressing pin 70 is positioned to an opening 72, and depresses the center core 14 of the magnetic sheet 12 toward a drive shaft 32 as the upper cover 28 moves downward. Then the pressing pin 70 guides the center core 14 of the magnetic sheet 12 to a position where the pressing pin 70 is not brought into contact with the center core 14 of the magnetic sheet 12 via the position which is in contact with the center core of the magnetic sheet 12. In this case, in loading the magnetic sheet pack to a magnetic recording or reproducing device, since the center core of the magnetic sheet is pressed to the drive shaft in the overstroke closing of the cover, the center core of the magnetic sheet is fitted surely to the drive shaft.

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 for magnetically recording still image information, etc. is rotatably housed inside the magnetic field pack. It is used by being attached to a body regeneration device. When attaching a magnetic sheet pack to a magnetic recording device or reproducing device in an electronic camera, connect the two center holes provided in the center core of the magnetic sheet in the magnetic seat back to the rotational drive shaft of the magnetic recording or reproducing device. Directly attaching the magnetic sheet pack to the magnetic recording or reproducing device is troublesome and inconvenient, and there is a possibility that the magnetic sheet pack cannot be accurately attached to the magnetic recording or reproducing device. In order to eliminate such troubles, a magnetic sheet pack attachment/detachment device has been proposed. By inserting the magnetic sheet pack into the inner bucket and then closing the top cover, the magnetic sheet of the magnetic sheet pack in the inner bucket is connected to the rotational drive shaft of the device main body. I try to attach it to.

On the other hand, a reinforcing center core is provided at the center of the magnetic sheet, and the rotation drive shaft is fitted into the center hole of the center core to rotate the magnetic sheet in the magnetic sheet pack.

By the way, the center core of the magnetic sheet must be accurately mounted on the rotational drive shaft, and if this mounting is insufficient, there is a risk that the magnetic head will not accurately record or reproduce video signals on the magnetic sheet. For this reason, the conventional attachment/detachment device for magnetic sheet packs involves fitting the rotary drive shaft into the center hole of the center core of the magnetic sheet, attaching a magnet to the rotary drive shaft, and attaching the center core by attracting it to the drive shaft using magnetic force. Although a magnetic chuck method has been proposed, sufficient effects cannot be expected even with this method.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and proposes a magnetic sheet pack attachment/detachment device that can securely attach the center core of the magnetic sheet to the rotational drive shaft when loading the magnetic sheet pack into a magnetic recording/reproducing device. The purpose is to

[Summary of the invention]

In order to achieve the above object, the present invention provides a pressing member that presses the center core of a magnetic sheet against a rotational drive shaft, an inner packet that stores the magnetic sheet pack, and a guide that guides the pressing member and the inner packet. The movable member has a movable member in which the movable member moves to guide the inner packet to a position where the center core of the magnetic sheet is fitted with the rotational drive shaft, and the movable member moves the pressing member. The present invention is characterized in that the pressing member is guided through a position where the pressing member presses the center core of the magnetic sheet to a position where the pressing member does not come into contact with the center core 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. 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 line nn in FIG. 1. 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 pack. A center core 14 as a reinforcing member is provided in the center of the magnetic sheet 12, and this center core 14 is exposed to the outside through a circular opening 16 of the magnetic sheet pack 10. Magnetic sheet pack 1
0, a window 18 in which a magnetic head, which will be described later, is located opens, and this magnetic head window 18 is opened and closed by a slidable shutter 20. That is, the shutter 20 closes the window 18 to prevent dust from adhering to the magnetic sheet 12 before the magnetic sheet pack 10 is inserted into an inner packet, which will be described later. The head window 18 is moved downward in FIG. 1 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 opposite end of the shutter 20 in the magnetic sheet pack 10, and this recess 22 is used for temporarily securing the magnetic sheet pack 1o when it is inserted into an inner packet to be described later.

FIG. 3 shows an overall perspective view of the magnetic recording/reproducing apparatus, and the magnetic recording/reproducing apparatus is composed of a main body 24, an inner packet 26, and an upper lid 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 10. Further, in FIG. 3, 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 screwed into this lead screw 36 and moves while being guided by a guide shaft 40. A head carriage 42 is a magnetic head provided on the bend 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 thereby the magnetic head 42 is moved in the radial direction of the magnetic sheet 12. The still image information can be magnetically recorded or reproduced on the magnetic sheet 12 for each trunk. 4
4.44 is a positioning pin of the regulating plate holder, which will be described later; 46
．． 46.46.46 is a plane (height reference plane) for the receiving part of the regulating plate holder.

The inner bucket 26 has a side edge 50.5 as shown in FIG.
0 has a U-shaped cross section and is configured to accommodate the magnetic sheet pack 10, and an opening 52 is formed in the center of the opening 52 into which the drive shaft 32, magnetic head 42, etc. of the main body 24 can be inserted. It is configured as follows. Also, inner bucket 26
A pair of guide pins 54. are provided on each side of the side edges 50.50.
54 is provided protrudingly. The guide pins 54, 54 are guided by slide plates to be described later, and when the inner bucket 26 is attached to the magnetic sheet pack,
Raise and lower against the side.

Upper lid 28 as a holding member for the pressing member and regulating plate holder
Similar to the inner bucket 26, the upper lid 28 (hereinafter referred to as the upper lid 28) has a pair of guide pins 56, 56 protruding from both sides thereof. Raise and lower against. On the back side of the top cover 28, the regulation plate holder 58 has three screws 60, 60, 60 and three springs 62, 62.
．． 62 and is elastically supported. This regulating plate holder 58 is provided with a regulating plate 64, and this regulating plate 64 has the function of aligning the magnetic sheet 12 along the magnetic head 42 side when the magnetic head 42 performs magnetic recording and reproduction on the magnetic sheet 12. Further, a plate 66 is attached to the back surface of the upper cover 28 via screws 68, 68, and a pair of pressing pins 70, 70 are installed on the plate 66 facing downward in FIG. There is. On the other hand, the regulating plate holder 58 has an opening 72.
is formed, and the pressing pin 70 is located in this opening 72 and presses the center core 14 of the magnetic sheet 12 toward the drive shaft 32 as the upper cover 28 moves downward.

A pair of side plates 74, 74 are attached to the device base 24. Further, inside the side plates 74, 74, a slide plate 76 bent into a U-shape is slidably provided.

Two vertical grooves 78.78 are formed at predetermined intervals on each side plate 74, and guide grooves 80.80 for guiding the upper lid 28 and inner bucket 2 are formed on opposite sides of the slide plate 76.
Guide grooves 82, 82 for guiding the 6 are formed. The guide pin 56 of the upper lid 28 is inserted into the guide groove 80,
The guide pin 54 of the inner bucket 26 is inserted into the guide groove 82.
is inserted. Next, the shape of the guide grooves 80, 82 will be explained with reference to FIG. 4. The guide groove 80 is composed of a vertical groove 80A, a tapered groove 80B following the vertical groove 80A, an overstroke groove 80C following the tapered groove 80B, and a lateral groove 80D located at a position slightly raised from the overstroke groove 80C. On the other hand, the guide groove 82 includes a lateral groove 82A, a tapered groove 82B following the lateral groove 82A, and a lateral groove 82C following the tapered groove 82B. As can be seen from FIG. 4, the tapered groove 80B of the guide groove 80
and the tapered groove 82B of the guide groove 82 are formed with substantially the same slope. As will be described later, the guide pin 56 is located in the guide groove 80 and the vertical groove 78, and by sliding the slide plate 76, the upper cover 28 is raised and lowered with respect to the apparatus main body 24. Also, the guide pin 54 of the inner bucket 26 is connected to the vertical groove 7.
8 and within the guide groove 82, and when the slide plate 76 slides, it is guided by the guide groove 82 and moves up and down with respect to the device main body 24 side.

The operation of the embodiment according to the present invention constructed as described above is as follows. First, when the guide pin 56 of the upper IF 28 is located in the vertical groove 80A of the slide plate 76, the guide pin 54 of the inner bucket 26 is the same (positioned in the horizontal groove 82A of the slide plate 76. When a force is applied in the direction of FIG.
starts moving to the left, this causes the inner bucket 2 to move to the left.
The guide pin 54 of No. 6 also begins to move down the tapered groove 82B.

FIG. 5(B) shows the positions of the upper lid 28 and the inner bucket 26 in this state, and in this state, the magnetic sheet pack 10 held by the inner bucket 26 is located above the drive shaft 32. It is in a non-contact state with the drive shaft 32. Further, the upper lid 28 is also located away from the inner bucket 26, and the pressing pins 70, 70 are not in contact with the center core 14 of the magnetic sheet 12.

When the slide plate 76 further moves leftward from this state, the guide pin 56 descends in the tapered groove 80B, and the inner bucket 26 is guided by the guide groove 82 and descends toward the apparatus main body 24 side. When the guide pin 56 reaches the overstroke groove 80C as shown in FIG. 6(A), the guide pin 54 on the inner bucket 26 side comes to be located at the starting end position of the lateral groove 80C. To explain the relationship between the inner bucket 26 and the upper lid 28 in this position, FIG.
As shown in B), the magnetic sheet pack 10 in the inner bucket 26 is located at a position where it can be connected to the drive shaft 32, and the center core 14 of the magnetic sheet 12 in the magnetic sheet pack 10 is attached to the drive shaft 32. On the other hand, just before the guide pin 56 of the upper lid 28 enters the overstroke groove 80C, the regulating plate holder 58 first contacts the surface 46 on the device main body 24 side to regulate the height, and then the upper lid 28 is moved by the biasing force of the spring 62. When pushed down against the pressure pin 70.70
4;! '[After the air sheet 12 comes into contact with the center core 14, it is forcibly pushed down, and the center core 14 is securely moved to the drive shaft 3.
Attach it to 2. In this state, the guide pin 5 of the upper lid 28
6 is an overstroke groove 80 as shown in FIG. 6(A).
C, and the pressing pins 70, 70 are in the position shown in FIG. 6(B).

When the slide plate 76 is further moved leftward from this state, the guide pin 56 of the upper lid 28 is moved into the overstroke groove 8.
It moves upward from 0C to the following lateral groove 80D. Along with this, the guide pin 54 on the inner bucket 26 side also has the horizontal groove 82.
It is located at the terminal position of C. This state is shown in FIGS. 7(A) and 7(B). That is, as the guide pin 56 moves upward from the overstroke groove 80C to the lateral groove 80D, the upper cover 28 also moves upward, while the guide pin 54 remains in the lateral groove 82C, so the inner bucket 26 is still attached to the drive shaft 32. The state will be maintained. The pressing pin 70.70 separates from the center core 14 as the upper M2B moves upward, and as a result, the center core 14 moves away from the pressing pin 70.70.
It can rotate at the required number of revolutions without being hindered by.

To take out the magnetic sheet pack 10, the above operation is reversed. That is, the slide plate 76 is moved rightward from the state shown in FIG. 7, and the guide pin 56 is once again positioned from the lateral groove 80D to the overstroke groove 80C. In this state, the pressing pins 70, 70 come into contact with the center core 14 of the magnetic sheet 12, and the rotation of the drive shaft 32 is reliably stopped. When the slide plate 76 is further moved to the right from this state, the guide pin 56 of the upper lid 28 begins to climb the tapered groove 80B. This movement of the slide plate 76 causes the slide plate 76 to taper! The guide pin 54 located at the lower end of the groove 82B also begins to climb the tapered groove 82B. Tapered groove 8
2. Due to the movement of the guide pin 54 that has started climbing B, the inner bucket 26 begins to move upward and separates from the drive shaft 32. The seat back 10 can be removed from the inner bucket 26 at the end of the rise of the inner bucket 26.

In the embodiment described above, a temporary 66 and a pair of pressure pins 70 and 70 were used as the pressing member, but it is sufficient to have a structure that can elastically press the center core of the magnetic sheet, and this is not limited to the embodiment described above. Well, it won't happen.

〔Effect of the invention〕

As explained above, according to the magnetic sheet pack attaching/detaching device according to the present invention, when the lid slowly moves in the closing direction from the normal closed position (overstroke), the center core of the magnetic sheet is pressed. When loading the magnetic sheet pack into a magnetic recording or reproducing device, the center core of the magnetic sheet is pressed against the drive shaft by the pressing member during the overstroke closing operation of the lid, so the center core of the magnetic sheet is securely pressed. Attached to the drive shaft.

[Brief explanation of the drawing]

Figure 1 is a plan view of the magnetic sheet pack used in this example, Figure 2 is a cross-sectional view of the magnetic sheet pack taken along the line ■-■ in Figure 1, and Figure 3 is a magnetic recording used in this example. Alternatively, FIG. 4 is a perspective view showing the overall structure of the playback device, FIG. 4 is a side view showing the shape of the guide groove of the slide plate, and FIGS.
) to 7(A) and 7(B) are drawings showing the lifting and lowering states of the upper lid and the inner bucket;
), Figure 7 (A) is a side view, Figure 5 (B), Figure 6 (B
), FIG. 7(B) is a front sectional view. DESCRIPTION OF SYMBOLS 10... Magnetic sheet pack, 12... Magnetic sheet, 14... Center core, 24... Main body of magnetic recording or reproducing device, 26... Inner bucket, 28... Upper lid, 32... Drive shaft, 54.5
6...Guide pin, 70...Press pin, 74.
...Side plate, 76...Slide plate, 80.82...
・Guide groove. Agent: Kenzo Matsuura, Patent Attorney Figure 1 n Figure 2, Figure 3

Claims (1)

[Claims] A magnetic recording device and reproducing apparatus that performs magnetic recording or reproduction on a magnetic sheet rotatably housed in a magnetic sheet pack includes a pressing member that presses a center core of the magnetic sheet against a rotational drive shaft; It has an inner bucket for storing, and a movable member in which a guide part for guiding the pressing member and the inner bucket is formed,
When the movable member moves, the movable member guides the inner bucket to a position where the center core of the magnetic sheet fits with the rotational drive shaft, and the pressing member presses the center core of the magnetic sheet. A device for attaching and detaching a magnetic sheet pack, characterized in that the device is configured to guide the pressing member to a position where the pressing member does not come into contact with the center core of the magnetic sheet.