JPS62295283A - Magnetic sheet device - Google Patents

Abstract

PURPOSE:To surely and easily open and close the window of a jacket by forming a lock member locking the shutter so as to be displaced elastically. CONSTITUTION:In moving a shutter 14 to a position closing the windows 12, 13 provided to the jacket 1 in the magnetic sheet device, an engaging piece section 21 provided to the shutter 14 is engaged with the lock member 22 provided in the jacket 1 to block unexpected movement of the shutter 14. In pressing an elastic displacement section 24 by a shutter opening means, the elastic displacement section 24 of the lock member 22 is displaced elastically around the support 23 to release the lock with the shutter 14. In overriding the engaging piece provided to the shutter 14 over the elastic displacement section 24, the section 24 is bent and restored elastically, then the engaging piece section 21 and the elastic displacement section 24 are engaged to lock the shutter.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention <Industrial Application Field> The present invention relates to a magnetic sheet device in which a magnetic sheet is rotatably housed in a jacket. It relates to a shutter that is slidably attached to open and close the section.

<Prior Art> Conventionally, magnetic sheets are constructed by depositing a magnetic recording layer on a thin film sheet, and are therefore fragile and extremely susceptible to damage.

In particular, if the magnetic recording layer is damaged, signals may be lost during recording and/or reproduction, making it impossible to obtain good recording and reproduction characteristics.

Therefore, in order to protect the magnetic sheet, which is fragile and easily damaged, and to facilitate handling and storage, it is stored in the above-mentioned Tn magnetic sheet jacket, and attached to a magnetic recording and reproducing device while stored in this jacket. A magnetic sheet device has been proposed that enables this.

A conventional magnetic sheet device has a jacket in which a magnetic sheet is rotatably housed, and is provided with a window that allows at least the signal recording surface of the magnetic sheet to extend outward in the radial direction. It consists of a slidably mounted shutter that opens and closes.

The shutter is biased in the direction of closing the window by the elastic return force of the spring member built into the jacket, and the window is closed, allowing dust to enter the jacket and damaging the magnetic sheet. It is configured to prevent exposure to Furthermore, when the magnetic sheet device is inserted into a predetermined mounting section in the magnetic recording/reproducing device, the shutter is engaged with a shutter opening member provided on the device side, and further inserted into the mounting section by a spring member. The window is slid in the direction of opening the window against the biasing force of the window.

As described above, according to the magnetic sheet device, the shutter that is slidably attached to the jacket is resiliently biased by the spring member that is attached to the jacket to close the window provided in the jacket. In connection with loading/unloading the magnetic recording/reproducing device, the shutter can be slid to open/close the window of the jacket.

<Problems to be solved by the invention> In the magnetic sheet device configured as described above,
Since the shutter simply closes the window of the jacket only by the biasing force of the spring member, it is easily slid and operated, resulting in the window being opened inadvertently. Furthermore, it is not possible to sufficiently protect the magnetic sheet housed in the jacket.

SUMMARY OF THE INVENTION Therefore, the present invention securely holds a shack for closing a window provided in a jacket in the closed position of the window, sufficiently protects the magnetic sheet housed in the jacket, and also enables the shutter to be opened. This was proposed for the purpose of providing a magnetic sheet device that can be operated smoothly and easily.

<Means for Solving the Problems> In order to solve the problems of the above-mentioned conventional products and achieve the above object, the present invention provides two parts of a jacket in which a magnetic sheet is rotatably housed. A locking member for locking the opening/closing shutter in the closed position is provided in the above-mentioned siekerat, and the locking member includes a support portion, an elastic displacement portion, and a connecting portion, and the support portion is connected to the jacket. It is configured such that the connecting portion applies an elastic force to the elastic displacement portion.

Function> In the magnetic sheet device according to the present invention, when the shutter reaches a position where the window provided in the jacket is closed, the retaining piece provided in the shutter engages with the locking member provided in the jacket. This prevents the shank from moving inadvertently.

When the elastic displacement portion of the locking member is pressed by the shutter opening means, the elastic displacement portion is elastically displaced using the support portion as an elastic displacement point, and the lock with the shutter is released. Furthermore, when the retaining piece provided on the shutter runs over the elastically displaceable portion, each time the elastically displaceable portion is deflected and then elastically returned, the engagement W portion and the elastically displaceable portion are connected to each other. The engagement is attempted and the shutter is locked.

<Examples> Hereinafter, specific examples of the present invention will be described with reference to the drawings.

As shown in FIGS. 10 and 2, the magnetic sheet device according to the present invention has a disc-shaped magnetic sheet inside a jacket l which is constructed by butting and joining a pair of upper and lower halves made of synthetic resin or the like. 2 is rotatably stored. The jacket 1 containing the magnetic sheet 2 is formed to be small enough to be held in the palm of the hand.

Further, a center core 4 is attached to the center of rotation of the magnetic sheet 20, into which a rotational drive shaft provided on the side of the TTL recording and reproducing apparatus that rotates the magnetic sheet 2 is inserted and engaged. This center core 4 has the above u in the center.
A drive hole 3 for holding a rotational drive shaft is formed, and when the magnetic sheet 2 is housed in the jacket 1, it faces so as to engage with a central opening 5 provided in the jacket 1. Furthermore, a display mechanism 6 is provided at the rear end corner of the jacket l for displaying the number of annular recording tracks formed on the magnetic sheet 2 by recording a predetermined video signal. . As shown in FIG. 2, this display device t46 includes a disc-shaped dial display member 8 having a keyhole-shaped display hole 7, and a gear-shaped portion 10 of a rotating gear 9 integrally attached to this dial display member 8. The stopper member 11 has an engaging portion 11a that elastically engages with the stopper member 11.

Windows 12 and 13 are provided on both sides of the jacket 1 so that parts of both main surfaces of the magnetic sheet 2 housed in the burn throat 1 are exposed outward in the radial direction. . These windows 12, 13 are provided between the center opening 5 and the front edge of the magnetic sheet 1, and have a width W1 sufficient to allow at least the signal recording area of the magnetic sheet 2 to face outward in the radial direction. It is formed. Also,
A predetermined information signal is recorded on the signal recording surface of the window section 12 facing the signal recording surface side of the magnetic sheet 2 among the window sections 12 and 13, and a magnetic head (i==magnetic head) for reproducing this recorded information signal is provided. enters and comes into sliding contact with the magnetic sheet 2.

And on top of the jacket 1 (well, this salmon.

A shutter 14 for opening and closing the window portion 12.13 provided in the door 1 is mounted so as to be slidable in the direction of arrow A in FIG. The shutter 14 is formed by bending a thin elastic metal plate, such as a stainless steel plate, into a U-shaped cross section as shown in FIG. That is, the shutter 14 is
A pair of cover plates 15 and 16 facing each other in parallel and having a size sufficient to close each of the window portions 12° 13 from the outer surface side;
Each of these lids! , 1i 15, 16 and a back plate 17 connecting one end edge thereof, and the whole has a U-shaped cross section. The shank 14 has a window portion 12.13.
A concave sliding area portion 18. is formed on both sides of the jacket 1 over one side edge of the jacket 1, including the peripheral edge of the jacket 1. '
A cover plate 15, 16 is extended from the top of the rack 7) and is attached so as to fit from the front side of the rack 7). At this time, the shank 14 is one of the lid plates! The back of 5! Engaging the locking protrusion 19.19 formed by bending the connecting part with the opposite part 1 inwardly with the guide groove 50 formed on the front side of the one sliding area part 18. This prevents the jacket from being removed from the jacket 1.

The shutter 14 mounted as described above is slidable over the range of the sliding area 18.18, and the rising edge of the sliding area 18.18 on the window 12° 13 side 18a until one side of the M provisional 15.16 comes into contact with the window 12.13, as shown in FIG. The rise of 1 (18b) until the lid (15.16) comes into contact with the window part 12
, 13 are left open.

Further, at one end of the back plate 17 of the Nyatta 14 on the left side in FIG. A protruding engaging piece 21 is provided.

When the shutter 14 reaches the position where the window portions 12 and 13 are closed, the engaging piece portion 21 engages the locking pawl 21a with a lip member 22 disposed inside the jacket l, thereby locking the locking claw 21a. This is what locks Shimanyu 14's emotions. In addition,
The above-mentioned 'J' ID: 117 is located in the notch recess 2oI formed on the front side of the notebook 1, and is multiplied along this notch recess 20.

The locking member 22, which holds the shutter 14 slidably attached to the jacket 1 in the closed position of the windows 12 and 13 as described above, is made of elastic synthetic resin or the like. As shown in the second and fourth sections, the jacket 1 is attached to the inner side surface using a support section 23 and a support section 23 that protrudes toward the 41.11 direction from the tip side of the support section 23. Each lid of the shutter 14 (15.16 mm
It consists of an elastic displacement part 24 sandwiched in between, and is formed in an abbreviated shape as a whole. Support 8 for this elastic displacement portion 24!
The connecting portion 24a to the connecting portion 23 has a small diameter.
4a is the point of elastic displacement.

The upper end surface side of the elastic displacement part 24 is an engaging part that is protruded so as to bulge out and is engaged by the locked pawl 21a at the tip of the engaging piece part 21 provided on the jacket 14 near the top thereof. An engagement recess 27 is provided. This engagement recess 27
On both sides, there are first slopes that slope toward the connecting portion 24a side, respectively. , a first surface portion 25 and a second slope portion 26 that slopes toward the distal end side. Further, an elongated hole 31 whose long diameter extends in the direction of elastic displacement is bored in the inner part of the elastic displacement section 24 .

The locking member 22 formed as described above has the elastic displacement portion 24 extending toward the front side of the jacket 1, and the elongated hole 31 is engaged with the displacement guide pin 32 planted inside the jacket 1. By attaching one side of the support part 23 to the inner side surface of the jacket 1, the structure shown in FIGS.
It is attached to the jacket 1 as shown in the figure.

Further, a guide groove 28 is formed in succession to the notch recess 20 on the front side of the jacket 1 at a position where the elastic displacement portion 24 of the lock member 22 extends. The engaging recess 2 of the elastic displacement portion 24 is inserted through the
The 7 side is protruded from the front side of 1.

Furthermore, approximately at the center of the back plate 17 of the shank 14 in the length direction, each window of the jacket 1 is attached to a predetermined mounting portion of the 6 storage sheet device 5, and the 6 air storage sheet devices are installed at the predetermined mounting portions of the 5 air recording and reproducing devices. shutter closing means for operating the window portions 12, 13 in a direction in conjunction with an operation for removing the magnetic sheet device from the mounting portion of the shack 14 which has been moved to a position where the portions 12, 13 are opened; An engaging notch 34 is formed. In this embodiment, this notch 34 is provided as a concave notch on the outer surface of the back plate 17, and is engaged by shutter closing means provided on the magnetic recording/reproducing device side. The hole may be formed as a through hole.

In the magnetic sheet device configured as described above, when the shutter 14 is moved to a position where the window 12.13 of the jacket l is closed, the tip of the retaining piece 21 provided at one end of the shutter 14 is moved. The lock claw 21a is engaged with the engagement recess 27 of the lock member 22 disposed on the jacket 1 side, and the closed state of the window 12, 13 by the shutter 14 is maintained, and the window 12, 13 is closed. Intrusion of dust and the like is prevented, and protection of the magnetic sheet 2 can be achieved.

The opening/closing operation state of the stripper 14 when the magnetic sheet device according to the present invention configured as described above is attached to and removed from a predetermined mounting portion of a magnetic recording/reproducing device will be explained.

First, in order to attach the magnetic sheet device to the mounting portion of the magnetic recording/reproducing device, the shutter 14 is engaged with the lock portion (22nd) to close the window portions 12 and 13 of the jacket 1.

When the magnetic sheet 'Al is inserted into the mounting part of the magnetic recording/reproducing apparatus from the front side where the shank 14 is attached, the shank 14 protruding from an example of this mounting part is inserted.
A protruding shank opening member 35 that unlocks the lock and opens the shutter 14 is attached to the jacket 1.
It engages with a guide groove 28 formed on the front side of the. When the jacket 1 is further inserted into the attachment part, the first inclined surface part 25 of the locking member 22 is pressed by the shank opening member 35, and the elastic displacement part 24 is pushed inward of the jacket 1. When the elastic displacement portion 24 is pressed and displaced, the shutter 1
The locking pawl 21a at the tip of the engagement piece 21 provided in the fifth
As shown in the figure, the locking member 22 is disengaged from the engagement recess 2'7, and the shimmatsu 14 becomes slidable. When the engagement of the shutter 14 with the locking member 22 is released in this way, the shimatsu press operation portion 35a at the tip of the shutter opening member 35 comes into contact with the tip end surface of the engagement piece portion 21 of the shutter 14, and the shutter 14 is opened. Sliding becomes regulated.

In addition, as an example of the mounting part of the magnetic recording and reproducing apparatus, a notch 3 provided on the front surface tHi7 of the shutter 14 is located in front of the shank opening member 35 on the insertion side of the Fjl air sheet.
4, and when the magnetic sheet device is extracted from the attachment part, the shank 14, which is placed in the position of opening the windows 12, t3 of the jacket 1, is moved in the direction of closing the windows 12, 13. Keino! A shutter closing protrusion 36 constituting a means for opening the shack is provided. The shutter closing protrusion 36 is made of an elastically displaceable material, and is provided at the shutter pressing portion 35a at the tip of the shifter opening member 35.
When it comes into contact with the engaging piece 21 of the shutter 14, it resiliently contacts the back plate 17 of the shank 14.

When the jacket 1 is further inserted, the shutter 14 moves relative to the jacket 1, as shown in FIG. 6, since its sliding is restricted by the shutter opening member 35. As shown in each window section 12. ．． 13 will gradually be released. When the jacket 1 is further inserted into the mounting part and pushed to a predetermined mounting position, the shank 14 is relatively moved to the position where the window part 12.13 is opened, as shown in FIG. becomes. Then, the shutter closing protrusion 36, which had been placed on the upper surface of the front side 17 of the shutter 14, is elastically returned to its original state, and the rear plate 17 is moved as shown in FIG. It engages with the notch. Then, when the mounted magnetic sheet device is positioned in the predetermined position 1 of the magnetic recording and reproducing device and the jacket l is inserted into the mounting portion, the shutter 14 is opened by the shutter opening member 35.
The Z portion 12.13 is held in an open state by being supported by the shutter closing protrusion 36 and pressed by the shutter closing protrusion 36. 1. The ivy 14 is inadvertently slid during recording and playback, and the windows 12.
13 will not be closed.

As mentioned above, when the jacket 1 is gradually pulled out from the mounting part in order to remove the magnetic sheet device mounted on the predetermined mounting part, only the jacket 1 is pulled out as shown in FIG. is kept in the same position. That is, since the shutter closing protrusion 36 engages with the notch 34 provided in the back plate 17, the sliding movement of the strip 14 is restricted, and when the magnetic sheet device is mounted in the mounting part in the center position, It is then placed in the store while being held in position.

When the jacket 1 is further pulled out in the direction of the arrow C in FIG.
Close 2 + 13.

When the windows 12 and 13 of the jacket 1 are closed in this way, the island ivy 14 will move to the sliding area 18, 18 of the jacket 1.
It comes into contact with the rising edge 18b on the side of the windows 12 and 13, and can move together with the jacket 1. When the jacket 1 is further pulled out in the direction of arrow C in FIG. 9, the shutter closing protrusion 36 is elastically displaced and then pulled out from the notch 34.

Then, the shirt flap opening member 35 is also completely removed from the guide groove portion 28, and the pressing of the elastic displacement portion 24 of the locking member 22 is released. In this way, when the pressure on the elastic displacement section 24 is released, the elastic displacement section 24 protrudes into the guide groove section 28 due to the elastic return force, and the engagement piece section 21 of the shutter 14
The locked claw 21a at the tip engages the engagement recess 2 of the elastic displacement portion 24.
7 and the nyatta 14 is locked by the locking member 22 to hold each window 12, 13 in the closed state.

Then, in the gap in which the locking pawl 21a at the tip of the engagement piece 21 of the shutter 14 engages with the beveled portion + the 22nd engagement recess 27, the tip of the locking pawl 21a is connected to the elastic displacement portion 24.
Since the elastic displacement portion 24 is gradually elastically displaced inward of the rack 1, smooth engagement is achieved.

<Effects of the Invention> As described above, in the magnetic sheet device according to the present invention, when the shank closes the window provided in the jacket, the shank is locked by the locking member provided in the jacket. Therefore, unnecessary opening of the window portion is prevented and reliable protection of the magnetic sheet is achieved.

In addition, since the locking member for locking the shack is formed so that it can be elastically displaced, the locking member provided on this shutter is elastically displaced as the lock member slides, and the above-mentioned engagement piece Since the locking member can be engaged with the locking member and the shutter can be unlocked by simply pushing the locking member, the opening and closing operations of the window can be performed more effectively and easily.

Furthermore, the locking mechanism of the shutter can be simplified.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing an embodiment of the present invention, Fig. 2 is an enlarged partially sectional front view thereof, Fig. 3 is an enlarged plan view thereof, and Fig. 4 is an enlarged front view of the part in which the locking member is installed. Figures 5 to 9 are diagrams explaining the operation of the shutter step by step, and Figure 5 shows a case in which the jacket is attached to the magnetic recording/reproducing device and the shutter attempts to open the window. Fig. 6 is a front view showing the shutter in the middle of opening the window, Fig. 7 is a front view showing the shank opening the window, and Fig. 80 is a front view showing the state in which the shank opens the window. FIG. 9 is a front view taken out from the recording/reproducing apparatus and showing a state in which the shutter closes the window part way; FIG. 9 is a front view showing a state in which the shutter closes the window part. 1...Jacket 2...Magnetic sheet 12.13...Window part 14...Shutter 22...Lock member 23...Support part 24...Elastic displacement part 24a...Connection part 27 ...Engagement recess

Claims (1)

[Claims] A locking member is provided in the jacket for locking a shutter for opening and closing a window portion of the jacket in which the magnetic sheet is rotatably housed in the closed position, and the locking member is connected to the support portion and the elastic displacement portion. The magnetic sheet device is configured such that the supporting portion is fixed within the jacket, and the connecting portion applies an elastic force to the elastic displacement portion.