JPS624940Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention consists of a cassette in which a sheet-like recording medium is housed in a jacket, and a recording medium for inserting into an opening formed in one of a pair of mutually opposing cassette walls of this cassette. The present invention relates to a recording and reproducing apparatus, comprising a head provided on a main body of the reproducing apparatus, and the head inserted through the opening contacts the recording medium to perform recording and/or reproduction.

2. Description of the Related Art Conventionally, a so-called floppy disk, which is made up of a circular magnetic sheet housed in a flat envelope-shaped jacket, is mounted on a recording/reproducing apparatus for recording and reproducing. As shown in FIG. 1, a conventional floppy disk 1 has an opening 3 formed in the lower wall of a jacket 2, and a magnetic head 4 is inserted through this opening 3 to attach the magnetic sheet 5 inside the jacket 2.
An opening 6 is formed in the upper wall of the jacket 2, and a pad 7 is inserted through the opening 6 to press the magnetic sheet 5 onto the magnetic head 4. However, since the pad 7 is made of a flexible material such as felt, the magnetic head 4
It has inferior abrasion resistance and environmental resistance compared to other materials, and the reliability of the device decreases when used many times.

The present invention has been devised in view of these problems, and includes a cassette in which a sheet-like recording medium is housed in a jacket, and a cassette formed on one of a pair of mutually opposing cassette walls of this cassette. and a head provided on the main body of the recording and reproducing apparatus to be inserted into an aperture, the head inserted through the aperture contacts the recording medium to perform recording and/or reproducing. The other cassette wall is configured to face the opening, a pad member is provided on the inner surface of the facing portion of the other cassette wall, and the pad member is arranged to face the outer surface of the other cassette wall. A pressing piece is provided on the main body, and the pressing piece presses the other cassette wall from its outer surface, so that the head member presses the recording medium against the pad. This relates to a recording and reproducing device. Therefore, the reliability of the device is improved.

An embodiment in which the present invention is applied to a recording/reproducing apparatus using a so-called floppy disk will be described below with reference to the drawings. As shown in FIGS. 2 and 3, a floppy disk 10 used in this apparatus is composed of a circular magnetic sheet 11 and a flat jacket 12. A center hole 13 for positioning and a small hole 14 into which a drive pin is inserted are formed in the center of the magnetic sheet 11. These holes 13, 14
is exposed to the outside through a circular opening 17 formed in the center of the upper and lower halves 15, 16 of the jacket 12.

Upper and lower halves 15 forming the jacket 12,
A joining piece 18 is formed on one of the halves 16, for example, the upper half 15, and the upper and lower halves 15, 16 are joined by these joining pieces 18 to form an envelope-shaped jacket 12. The magnetic sheet 11 is arranged inside this jacket 12. Sheet-shaped cushioning materials 19 and 20 are provided between the magnetic sheet 11 and the upper half 15 and between the magnetic sheet 11 and the lower half 16, respectively.
are arranged. These cushion materials 19,2
0 consists of a flexible sheet-like member, for example, a nonwoven fabric impregnated with lubricant, and the upper and lower halves 1
It is attached to the inside of 5 and 16. The cushioning materials 19 and 20 prevent the magnetic sheet 11 from being electrically charged, and the cushioning materials 19 and 20 prevent the magnetic sheet 11 from being charged.
It has a lubricating function to reduce friction when the sheet 11 rotates, and also performs a cleaning function to remove dust attached to the sheet 11.

A pair of halves 15 forming the jacket 12,
One of the halves 16, for example the lower half 16, is formed with a single elongated hole 21 extending in the radial direction. Corresponding to the long holes 21, long holes 22 are also formed in the lower cushion material 20. A magnetic head 23 (see FIGS. 4 and 5) is inserted from below through these long holes 21 and 22. The upper half 15 and the cushion material 19 are not provided with openings, and the long holes 21 and 2 of the upper cushion material 19 are not provided with openings.
2 is opposed by a portion of the upper cushion material 19 attached to the inner surface of the upper half 15. This opposing portion constitutes a pad member, and this pad member presses the magnetic sheet 11 against the magnetic head 23, so that the magnetic sheet 11 comes into contact with the magnetic head 23 with an appropriate contact pressure. It's getting old.

Figures 4 and 5 show a mechanism for applying back tension to the magnetic sheet 11 rotating within the jacket 12 and contact pressure to the magnetic head 23, in which a pair of pressure pieces 25, 26 are fixed to both ends of the lower surface of a small rectangular pressure plate 24.
The pressing piece 25 and the magnetic head 23 face each other with the upper half 15, cushioning material 19, and magnetic sheet 11 in between. Three pins 27 are attached to the upper surface of the pressing plate 24, and small holes formed at the tips of three arms 29 connected to a leaf spring 28 engage with the pins 27. The center of the leaf spring 28 is pressed by a pressing rod 30.

Next, to describe the operation of this device, the floppy disk 10 shown in FIGS.
The drive pin is engaged with the center hole 13 of the seat 11 for positioning, and the drive pin is engaged with the small hole 14 of the seat 11. Accordingly, as the spindle rotates, the sheet 11 rotates within the jacket 12. Then, the magnetic head 23 inserted through the opening 21 of the lower half 16 of the jacket 12 comes into contact with the sheet 11 inside the jacket 12 to perform recording and reproduction. The magnetic head 23 is adapted to be moved continuously or intermittently in the length direction of the elongated hole 21 relative to the magnetic sheet 11.

The portion of the magnetic sheet 11 that comes into contact with the magnetic head 23 is pressed down from above by a cushion material 19, and the portion of this cushion material 19 that faces the elongated hole 21 constitutes a pad member. That is, the leaf spring 28 is elastically deformed by being pressed by the pressing rod 30, and the elastic restoring force of the leaf spring 28 is transmitted to the cushion material 19 via the pressing plate 24, the pressing piece 25, and the upper half 15. ing. Therefore, the pad member made of the cushion material 19 connects the magnetic sheet 11 to the magnetic head 2.
3, the magnetic sheet 11 is elastically brought into contact with the magnetic head 23 with an appropriate contact pressure, thereby enabling good recording and reproduction. Furthermore, since the pad member is constituted by the portion of the cushion material 19 attached to the jacket 12 that corresponds to the opening 21, the pad member will also be replaced when the floppy disk 10 is replaced. Therefore, even if the cushion material 19 itself has poor abrasion resistance, the number of times it is used is very small, and the magnetic sheet 11 always maintains a nearly constant contact pressure.
It becomes possible to grant Further, since no pad member is provided on the device main body side, the structure of the device main body is simplified.

Furthermore, the elastic restoring force of the leaf spring 28 imparts a preferable back tension to the magnetic sheet 11. That is, as particularly shown in FIG.
The magnetic sheet 11 is held by the upper and lower cushion members 19 and 20. Furthermore, since the clamping position is on the upstream side in the rotational direction of the magnetic sheet 11 with respect to the position where it contacts the magnetic head 23, an appropriate back tension can be applied to the magnetic sheet 11. Note that 31 in the figure is a positioning member for the jacket 12.

Next, a modification of the above embodiment will be explained with reference to FIGS. 6 and 7. In this modification, parts corresponding to those in the above embodiment are given the same reference numerals, and descriptions of parts having the same configuration will be omitted. In this modification, openings 21 and 22 are formed in the lower half 16 and the cushion material 20, respectively, and openings 35 and 36 are also formed in the upper half 15 and the cushion material 19, respectively. 35 and 36 are formed at positions shifted by 180 degrees in the circumferential direction of the magnetic sheet 11 with respect to the openings 21 and 22.
Therefore, according to this modification, recording and reproduction can be performed on either the upper or lower surface. When the jacket 12 is attached in the state shown in FIG. 7, the magnetic head 23 is inserted through the opening 21, and the upper The cushion material 19 functions as a pad member, and when the jacket 12 is installed upside down and left and right in the state shown in FIG.
The magnetic head 23 is inserted through the pad, and the cushion material 20 functions as a pad member.

As described above, the present invention is configured such that the head is inserted into an opening formed in one of a pair of mutually opposing cassette walls of a cassette in which a sheet-like recording medium is housed in a jacket. A pad member is provided on the inner surface of the portion of the other cassette wall facing the opening, and a pressing piece provided facing the outer surface of the other cassette wall presses the other cassette wall from the outer surface. By doing so, the pad member is configured to press the recording medium against the head, so that the cassette containing the sheet-shaped recording medium in the jacket can be moved to another position relative to the main body of the recording/reproducing apparatus. When replacing with a cassette, the pad member will also be replaced accordingly. Therefore, compared to attaching the pad member directly to the main body of the recording/reproducing device,
The same pad member is not used repeatedly, and therefore, even if a soft pad member with poor wear resistance is used, the pad member will not easily wear out. As a result, the contact of the sheet-shaped recording medium against the head is less likely to deteriorate, and the reliability of the recording/reproducing apparatus is improved.

Furthermore, since the pad member is provided within the cassette, the structure of the main body of the recording/reproducing apparatus can be simplified.

Furthermore, since no opening is formed in the opposing portion of the other cassette wall opposite to the opening formed in one cassette wall, dust and other foreign matter may enter the cassette through this opening, causing sheet-like records to be damaged. There is no risk of damaging or damaging the media or pad members. Moreover, since the above opening is not formed,
This can prevent the strength of the cassette wall from decreasing.

Furthermore, since the pad member presses the sheet-like recording medium against the head by pressing the other cassette wall from its outer surface with the pressing piece, this pressing force can be adjusted to an appropriate level. By making this adjustment, it is possible to prevent the sheet-like recording medium from being deformed due to the contact of the head, and to improve the contact of the head against the sheet-like recording medium.
Therefore, the reliability of the recording/reproducing device is further improved.

In addition, since the pressing piece indirectly presses the pad member through the other cassette wall,
There is no need for the pressing piece to be made of soft material,
Therefore, the pad member can be pressed reliably, and the durability of the pressing piece can be increased.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of the main parts of a conventional recording/reproducing device.
2 is an exploded perspective view of a floppy disk used in a device according to an embodiment of the present invention, FIG. 3 is a vertical cross-sectional view of the same main part, FIG. 4 is a perspective view of a main part of a device using this disk, and FIG. The figures are a sectional view taken along the line -- in FIG. 4, FIG. 6 is an external perspective view of a disk according to a modification of the above embodiment, and FIG. 7 is a longitudinal sectional view thereof. In addition, in the symbols used in the drawings, 2...jacket, 5...magnetic sheet (sheet-shaped recording medium),
15... Upper half (cassette wall), 16... Lower half (cassette wall), 19... Cushion material, 2
1... Long hole (opening), 23... Magnetic head.

Claims (1)

[Scope of utility model registration request] A cassette in which a sheet-like recording medium is housed in a jacket, and a head provided on a main body of a recording/reproducing apparatus for inserting the cassette into an opening formed in one of a pair of mutually opposing cassette walls. The head inserted through the opening contacts the recording medium to perform recording and/or recording.
Alternatively, in a recording and reproducing apparatus configured to perform playback, the other cassette wall is configured to face the opening, a pad member is provided on the inner surface of the opposing portion of the other cassette wall, and the other cassette wall A pressing piece is provided on the main body of the recording/reproducing apparatus so as to face the outer surface of the cassette, and the pressing piece presses the other cassette wall from the outer surface of the cassette wall, so that the head member holds the recording medium against the pad. A recording/reproducing device configured to be pressed by the user.