JPS6231419B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic disk device that is improved so that a rotary pressing member that presses a magnetic disk against a rotary driver does not separate from the rotary driver during operation.

Generally, in a magnetic disk device, the magnetic disk is placed on a rotary drive body disposed inside the device body, and a rotary pressing body is pressed from above the magnetic disk, so that the periphery of the center hole of the magnetic disk is pressed against the rotary drive body. It is configured to be held between a rotating pressing body. By the way, as a means for reciprocating the rotary pressing body in the direction of moving it toward and away from the rotary drive body, a pressing operation member that rotatably supports the rotary pressing body is provided, and one end of the pressing operation member is attached to the back side of the magnetic disk insertion part. There is one in which the magnetic disk is rotatably supported, and the other end on the side of the magnetic disk insertion/ejection opening is rotated about the one end. However, in conventional magnetic disk devices, the pressing operation member is locked like a latch in the magnetic disk insertion/ejection opening, and the rotary pressing body is pressed against the magnetic disk, and the locking can be released with an extremely simple operation. Therefore, even if there is a slight operational error by the operator during operation, the locking of the pressing operation member can be easily released and the rotary pressing body will be separated from the magnetic disk, resulting in the magnetic disk Not only did the magnetic disk come out of its normal position, making it impossible to operate, but there was also the risk that the magnetic disk could be damaged by being swung around by the rotary drive body in its detached state.

This invention has been made in consideration of the above-mentioned circumstances, and the reason is that when a magnetic disk is held between a rotary drive body and a rotary push body, the rotary push body may become separated from the rotary drive body due to a slight operational error. The purpose of the present invention is to provide a magnetic disk device that can be operated safely.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of the magnetic disk device, and FIG. 2 is a sectional view of the device viewed from the side, where 1 is the main body of the device. A bearing 2 is provided on the mounting plate portion 1a of the main body 1, and a rotating shaft 3 is inserted through the bearing 2.
A rotary drive body 4 is fixed to one end of the rotating shaft 3, and a pulley 5 is fixed to the other end of the rotating shaft 3. This pulley 5 is connected via an endless belt 8 to a motor pulley 7 fixed to the shaft of a motor 6, and is rotationally driven by the motor 6. Another motor 9 capable of forward and reverse rotation is attached to the mounting plate portion 1a, and a cam plate 10 having a spiral cam groove 10a on one side is fixed to the shaft of the motor 9. In the figure, reference numerals 11 and 11 denote mutually parallel guide shafts supported at both ends by the mounting plate portion 1a, and a carriage 12 is mounted on both guide shafts 11, 11 so as to be freely forward and backward. One end of a leaf spring 13 is fixed to this carriage 12, and the other end of the leaf spring 13 faces the cam plate 10, and a hemispherical body 14 that fits into the cam groove 10a is attached to the other end of the leaf spring. The rotation of the motor 9 is converted into a linear motion of the carriage 12. The carriage 12 also has a magnetic bed 15.
At the same time, one end of the pad arm 16 is rotatably mounted via a shaft 17, and a pad 18 attached to the other end of the pad arm 16 can be moved toward and away from the magnetic recording surface of the magnetic head 15.
The pad arm 16 has an engagement protrusion 16a extending laterally, and is always biased in a direction to bring the pad 18 into contact with the magnetic head 15 by a deployment spring 19 attached to the shaft 17.

On the other hand, one end of a pressing operation member 20 is rotatably attached to the back of the apparatus main body 1 (right end in the figure) via a leaf spring 21. The above pressing operation member 20
, the shaft 22 is on the same axis as the rotary drive body 4,
Mounted for downward movement. The shaft 22
A rotary pressing body 24 is attached to the lower end of the magnetic disk 23 for pressing the peripheral edge of the center hole of the magnetic disk 23 against the rotary driving body 4. Further, a compression spring 24S is attached to the outer periphery of the shaft 22 to constantly bias the rotary pressing body 24 in the direction of the rotary drive body 4. Therefore, the magnetic disk 23 is held between the rotary drive body 4 and the rotary pressing body 24 by the spring force of the compression spring 24S. Further, the other end of the pressing operation member 20 is provided with an opening/closing operation section 20a having a locking piece insertion hole 25 at the center and magnetic disk guide pieces 26, 26 on both sides. Further, a shielding plate 27 is provided near the insertion hole 25 .

A front plate 28 is attached to the front part of the main body 1 of the apparatus. As shown in FIG. 3, this front plate 28 is provided with a disk insertion/removal port 29, an insertion/removal operation opening 30, and a display opening 31 for displaying the disk insertion/removal status. The opening 30 is closed from the outside by the shielding plate 27. Further, a locking member 34 having a locking piece 32 and an operation knob 33 is attached to the inner surface of the front plate 28 so as to be slidable in left and right directions. Further, the locking member 34 is always connected to the third
It is biased toward the left in FIGS. 5 to 5, and as shown in FIG. 4, the tip of the locking piece 32 is brought into contact with a portion of the opening/closing operation section 20a that is out of the locking piece insertion hole 25. Therefore, in the state shown in FIG. 4, the pressing operation member 20 is prohibited from rotating upward, that is, movement in the direction of separating the rotary pressing body 24 from the rotary driving body 4 is prohibited. . And the fifth
As shown in the figure, the locking piece 32 resists the tension spring 35.
When the locking piece 32 is inserted into the locking piece insertion hole 25, the inhibited state for the pressing operation member 20 is released, and the pressing operation member 20 is moved to the position where the locking piece 32 is inserted into the locking piece insertion hole 25. Rotate upward by 4.5 degrees, and move the rotary pressing body 24 to the rotary drive body 4.
It is now possible to separate it from the Further, an operating knob 33 of the locking member 34 is led out from the display opening 31 of the front plate 28, and the locking member 34 can be slid by gripping the operating knob 33. . Further, the locking member 34 is marked with "ON" and "OFF" indications on both sides of the operation knob 33, respectively, and is ON when the locking member 34 prohibits upward rotation of the pressing operation member 20. A display is made and the locking member 3
4 releases the above-mentioned prohibition of the press operation unit 20.
OFF is now displayed.

As shown in FIG. 2, an elastic pressing member 36 made of foamed steel or the like is provided on the lower surface of the pressing operation member 20.
is attached, and when the rotary pressing body 24 presses the peripheral edge of the center hole of the magnetic disk 23, it simultaneously presses the disk case 23a enclosing the magnetic disk 23 from above and presses the disk 23 on the inner surface of the case 23a. I make sure that cleaning is done. Further, an operating piece 37 integrally attached to the pressing operation member 20 extends below the engagement protrusion 16a of the pad arm 16, and in conjunction with the rotational movement of the pressing operation member 20, the operation piece 37 moves the pad arm 16.
The magnetic head 15 is adapted to move towards and away from the magnetic head 15. Further, reference numeral 38 in FIG. 1 denotes a photodetector for detecting the magnetic disk 23, which is attached to the pressing operation member 20. Reference numeral 39 denotes a solenoid that rotates the disk pressing lever 40 around the shaft 41. This solenoid 39 moves the pad 18 up and down, so that the disk 23 can be pressed against or separated from the head 15 as appropriate. It's summery.

Next, the operation of inserting and removing the magnetic disk 23 in this magnetic disk device will be explained. 5 and 6 show a state in which the pressing operation member 20 is raised. In this state, the rotary pressing body 24, the pad arm 16, and the disk pressing lever 40 are also in the raised position. At this time, the locking member 34
Move to the right in the figure, and turn off the display opening 31.
It is displayed. And disk case 2
The magnetic disk 23 enclosed in the magnetic disk 3a is horizontally inserted through the disk insertion/ejection opening 29 and positioned at a predetermined set position within the main body 1 of the apparatus. When the opening/closing operation section 31 is then lowered, the rotary pressing body 24 comes into contact with the peripheral edge of the center hole of the magnetic disk 23 from above, as shown in FIG. At this time, even after the rotary pressing body 24 and the disk 23 come into contact, the pressing operation member 20 is lowered by a predetermined distance, and the spring force of the compression spring 24S acts on the rotary pressing body 24. Therefore, the magnetic disk 23 is pressed and held between the rotary pressing body 24 and the rotary driving body 4 by the spring force of the spring 24S. Further, as the pressing operation part 20 is lowered, the elastic pressing part 36 is brought into pressure contact with the disk case 23a, and the pad arm 16 is rotated counterclockwise in FIG. press against. When the pressing operation member 20 moves to a predetermined lowered position in this way, the locking piece insertion hole 25 comes out of the locking piece 32, and the locking member 34 is moved leftward along the upper surface of the pressing operation member 20 by the tension spring 35. It returns to the state shown in FIG. 4. At this time, the locking piece 32 reliably prohibits upward rotation of the pressing operation member 20. Further, the operation knob 33 in the display opening 31 moves to the left in FIG. 4 together with the locking member 34, and the ON display is displayed in the opening 31.
Therefore, the magnetic disk 23 uses the rotation driving body 4 and the rotation pressing body 24 to press the compression spring 2 at the peripheral edge of the center hole.
When the rotary drive body 4 is pressed and clamped by the spring force of 4S and rotated by rotating the motor 6,
A rotary pressing body 24 and a disk 23 are integrally connected to this.
starts rotating. Further, when the cam plate 10 is rotated by being driven by the motor 9, the spiral cam groove 10a provided on the cam plate 10 and the carriage 1
Hemispherical body 1 attached to 2 via a leaf spring 13
4, the carriage 12 moves straight along the two guide shafts 11, 11. As a result, the magnetic head 15 mounted on the carriage 12 moves in the radial direction of the disk 23, so that magnetic recording is performed on the surface of the disk 23 by the combination of the rotation of the disk 23 and the forward and backward movement of the magnetic head 15. It becomes like this. At this time, the elastic pressing portion 36 also presses against the disk case 23a of the magnetic disk 23.
, the inner surface of the disk case 23a is pressed against the disk 23 by rotation of the disk 23.
The surface of the disk 23 is cleaned.

Next, when removing the magnetic disk 23, the motors 6 and 9 are first stopped. Then, the operating knob 33 is slid to the right of the display opening 31. Then, the position of the locking piece 32 matches the position of the locking insertion hole 36 of the pressing operation member 20, so that the inhibition of the operation of the pressing operation member 20 is lifted. Therefore, in this state, the pressing operation member 20 can be raised, and as described above, the rotary pressing member 24, pad arm 16, and disk pressing lever 40 are also raised, and the magnetic disk 2
It is separated from 3. In this state, the magnetic disk 23 can be taken out through the disk insertion/ejection opening 29.

As described above based on one embodiment, according to the magnetic disk device of the present invention, when the opening/closing operation section 20a of the pressing operation member 20 is pushed down, the locking piece 32 comes out of the locking piece insertion hole 25 and is pulled out. The spring 35 moves the locking piece to a position where it is removed from the locking piece insertion hole 25, so it is automatically locked.Moreover, when removing the magnetic disk 23, pull the unlocking operation knob 33 of the locking member 34, By sliding the locking piece 32 to the position against the force, the locking piece 32 returns to its original position and the locked state is released, thereby preventing mistakes in inserting and removing the magnetic disk. Furthermore, as in the above embodiment, the locking piece 3 is inserted through the display opening 31 of the front plate 28.
If the ON display or OFF display indicating the position 7 is made visible, the magnetic disk device can be operated more safely.

Note that this invention is not limited to the embodiments described above. For example, in the above-described embodiment, the pressing operation member has one end rotatably attached and the other end moved up and down to move the rotating pressing body toward and away from the rotating driving body. A press operation member may be provided that is operated to move up and down linearly.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a plan view of a magnetic disk device, Fig. 2 is a side sectional view showing the operating state of the device, and Fig. 3 is a front view of the device. FIG. 4 is an exploded perspective view, FIG. 4 is a front view showing the operating state of the device, and FIGS. 5 and 6 are a front view and a side sectional view showing the state of the device when a disk is inserted and removed. 1... Apparatus body, 4... Rotating drive body, 20...
Pressing operation member, 23... Magnetic disk, 24...
Rotating pressing body, 34...Locking member.

Claims (1)

[Claims] 1. A device body having a disk insertion/ejection opening on the front face, an insertion/ejection operation opening provided in the center of the disk insertion/ejection opening, and an insertion/ejection status display opening provided near the disk insertion/ejection opening, and this device body. a rotary drive body disposed inside the rotary drive body; and a push operation member having an opening/closing operation part rotatably provided above the rotary drive body and rotating in the vertical direction within the insertion/removal operation opening at the front end thereof. , rotation in which the peripheral edge of the central hole of the magnetic disk, which is rotatably attached to the pressing operation member and inserted into the apparatus main body through the disk insertion/ejection port, is pressed against the rotary drive body, and the magnetic disk is rotated by the rotational force of the rotary drive body. a pressing body; a spring member that urges the pressing operation member in a direction to separate the rotary pressing body from the rotary driving body; a locking member having an operation knob for releasing the locked state that slides in the left-right direction; a locking piece that projects downward from the locking member; and a locking piece that biases the locking member in either the left or right direction. A tension spring that brings the tip of the locking piece into contact with the pressing operation member to prevent upward rotation of the opening/closing operation part; and a tension spring that pulls the lock state release operation knob provided at the front end of the pressing operation member. A magnetic device characterized by comprising a locking piece insertion hole that engages with the locking piece to allow upward rotation of the opening/closing operation part when slid to a position that resists the biasing force of a spring. disk device.