JPS60150277A - Cartridge - Google Patents

Abstract

PURPOSE:To open a shutter and to prevent a cartridge from jumping out caused by the automatic returning force of the shutter, by inserting a straight-shaped push jig into the cartridge from a device. CONSTITUTION:When a cartridge 1' is inserted into a device from an E direction, a jig 28 on the device side is inserted into a guide groove 29 of the cartridge 1'; a shutter 25 is rotated with an axis 24 as a center to be opened. A surface on which a jig 28 hits the shutter 25 is made parallel to the insertion direction E, and therefore the shutter 25 by a coil spring 26 in the insertion direction or opposite insertion direction of the cartridge 1' does not rotate in the direction of C. The shutter 25 is fixed as opened, thereby causing no jumping out of the cartridge 1' due to the returning power of the shutter 25. Pulling out of the cartridge 1' from the device returns the shutter 25 by its automatic returning force, thereby covering a head protruded hole 22 and a motor protruded hole 23.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention is directed to an automatic transmission system which stores a magnetic disk inside a case, has an insertion opening for a rotating shaft of a head and a motor in the case, and further covers the insertion opening. 0 Regarding Cartridges Having a Shutter Equipped with a Return Mechanism (b) Prior Art and Problems Conventionally, there are cartridges having an automatic shutter return force as shown in FIGS. 1 and 2, for example. 1st
Figure (b) shows the cartridge 1 with the shutter 2 closed, and Figure 2 shows the shutter 2 open. It further has a head insertion port 4 necessary for recording and reproducing the magnetic disk 3 and an insertion port 5 into which a single rotation shaft of a motor is inserted. Note that 6 indicates a hub located at the center of the magnetic disk 3. The shutter 2 covers the head insertion port 4 of the cartridge 1 and the rotation shaft insertion port 5, and the shutter movement range on the cartridge 1 is recessed so that the shutter 2 slides in the direction of arrow X to open. However, the return spring 8 automatically returns the insertion openings 4 and 5 to the state (FIG. 1) when not in use. Then, in order to record and reproduce, when the cartridge 1t' is inserted into the cradle 10 of the magnetic recording and reproducing device 9 as shown in FIG.
A pin 11 on the device side for opening pushes the shutter 2 along the guide groove 12 of the cartridge 1, and the state becomes ready for recording and reproduction as shown in FIG. In this state i~, the automatic return force of the shutter is applied in the direction of arrow B, so if the force in the direction of arrow A is stopped, the cartridge 1 will fly out in the direction of arrow B. Therefore, as a conventional method, a stop mechanism 13 (a pin is moved in and out using a solenoid or the like) is separately provided to prevent the cartridge 1 from popping out, and after the cartridge lt'' is fixed, the cartridge 1 is moved by the link mechanism 15 using the loading motor 14. It was set on the rotating shaft 16 of the motor.

Providing the stop mechanism 13 as described above makes the device mechanism complicated and expensive.

(c) Purpose of the Invention The purpose of the present invention is to open the shutter by simply inserting a straight-shaped pushing jig into the cartridge from the device side, and to prevent the cartridge from popping out due to the automatic return force of the shutter. Our goal is to provide cartridges that can.

(d) Structure and object of the invention According to the present invention, a magnetic disk is housed inside a case, the case has a rotating shaft of a motor and an insertion opening for a head at least on either the upper or lower side, and In a cartridge having a shutter that covers a mouth, the shutter is rotatable around an axis in the thickness direction of the cartridge, and includes a spring member that applies a rotational force to the shutter around the rotation axis, and the cartridge is attached to a device. To provide a cartridge characterized in that when the cartridge is installed in a device, a pushing jig in the device is inserted into the cartridge, the shutter is rotated to release the cover of the insertion opening, and further the shutter is kept in an open state. This is achieved by

(6) Examples of the invention Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

4 is a plan view showing one embodiment of the cartridge of the present invention, FIG. 5 is a sectional view taken along line AA in FIG. 4, and FIG. 6 is a sectional view taken along line BB in FIG. 4.

In the figure, the cartridge 1' (see FIG. 5) has an upper shell 17, 18 (a case plate made of resin) forming a cartridge frame, and the upper shell 17 has a diameter 20 larger than the diameter of the magnetic disk 19. It's hollowed out. A magnetic disk 1 equipped with a hub 21 at the center of the ore in the bored part.
9 is retained. Upper shell 17 has ↑rad insertion hole 2
2 and a motor shaft protrusion hole 23 are bored. The shutter 25 is rotated about the shaft 24 so as to cover the head insertion hole 22 and the motor protrusion hole 23 from the top SI in the figure.
is provided with a rotational force in the direction of arrow C by a screw coil spring 26 provided around the shaft 24. On the shutter 25 side of the upper shell 17, the shutter movement range a is dug deeper at various angles than the thickness of the shutter 25, and the shutter 25, which has a rotational force in the direction of arrow C, hits the countersunk side surface e at Di and its position is There is a cover 2 on top of the shutter 25 which is stopped at
7 is attached to the upper shell 17. That is, the shutter 25 is located between the upper counterbore portion of the upper shell 17 and the cover 27. In addition, the cover 27
There are holes 30 and 31 larger than the motor shaft protrusion hole 23 and the head insertion hole 22. In addition, a straight-shaped jig A28 (see Fig. 4) is provided on the cradle lO of the device on the device side, and a guide groove 29 is also provided in the cartridge 1' at a position corresponding to the jig A28. When inserted from the direction of arrow E, the jig 28 presses the side surface of the shutter 25 on the rotating shaft 24 side, causing the shutter 25t to rotate.

When the cart is inserted into the device from the direction 1'kE, the device 28 is relatively inserted into the guide groove 29 of the cartridge 1', the shutter 25 is rotated around the shaft 24, and it is moved to the position shown by the dashed line. It will be opened in At this time, the screw coil spring 26 is activated.

The rotational force of the shutter 25 in the C direction is generated in the insertion direction of the cartridge 1' or in the counter-insertion direction because the contact surface of the straight-shaped jig 28 on the device side and the shutter 25 is parallel to the insertion direction E of the cartridge 1'. Shirt octopus 5'ltI1g1
The force to turn it will no longer work. Therefore, the shutter 25 is fixed in the open state.
The cartridge 1' does not pop out due to the automatic return force.

Furthermore, when the cartridge 1' is completely pulled out from the device, the fixation of the shutter 25 by the straight-shaped jig 28 is released, and the shutter 25 returns again due to the automatic return force, and the head protrusion hole 22 and the motor protrusion hole 23 are opened. Effects of the Invention As explained in detail above, the shutter of the uninvented cartridge is rotatable around the axis in the thickness direction of the cartridge, and the shutter rotates 7 times per 1gI of the rotation axis. When the C1 cartridge is not in use, cover the cartridge's head insertion hole and motor protrusion hole with a shutter, and when it is installed in the device, the pushing jig on the device side is pushed into the cartridge and the shutter is fully closed. Since the cartridge is prevented from opening and the cartridge pops out due to the automatic return force of the shutter, there is no need to separately provide a stop mechanism for preventing the cartridge from popping out, unlike in the conventional case. Therefore, the practical effect of simplifying the structure of the device and reducing the cost is great.

[Brief explanation of the drawing]

Figures 1 and 2 show conventional cartridges, and Figure 1 (
A) is a plan view of the shirt cap in the closed state, FIG. 1B is a cross-sectional view, FIG. 2 is the shirt cap open state, FIG. figure,
Figures 5 and 6 show an embodiment of the cartridge of the present invention; Figure 4 is a plan view of the cartridge;
-A sectional view, and FIG. 6 is a BB sectional view of FIG. In the figure, 1' is a cartridge, 17 is an upper shell, 1
8 is the lower shell, 19μ magnetic disk, 20 is the middle 9 diameter,
21 is a hub, 22 is a head insertion hole, 23 is a motor shaft protrusion hole, 24 is a shaft, 25 is a shutter, 26 is a torsion coil spring, 27 is a cover, 28 is a jig, 29 is a guide groove, 3
0.31 indicates cover hole metal 0

Claims (1)

[Claims] In a cartridge that stores a magnetic disk inside a case, has a rotating shaft of a motor and an insertion opening for a head on at least one of the upper and lower sides of the case, and further has a shutter that covers the insertion opening, and the shutter has a thickness that corresponds to the thickness of the cartridge. The cartridge is equipped with a spring member that is rotatable about the entire center of an axis in the horizontal direction and that applies rotational force to the shutter around the rotation axis, and when the cartridge is installed in the device, a pushing jig in the device is inserted into the cartridge. The cartridge 0 is characterized in that the shutter rotates to release the cover of the insertion port and further maintains the shutter in an open state.