JPH0695423B2 - Recording or playback device - Google Patents

Description

Description: TECHNICAL FIELD The present invention uses a recording or reproducing apparatus, in particular, a disc-shaped record carrier, and a disc-shaped record carrier is clamped at its center portion to a record carrier rotation driving unit by a clamping unit. In addition, the present invention relates to a recording or reproducing device for recording or reproducing a signal by rotating the record carrier while being held by a holding means including a recording or reproducing head and / or a pad.

[Prior art]

A floppy disk device is known as an example of the recording or reproducing device as described above. That is, Flotpie
In the disk device, a flexible magnetic disk is clamped in its center hole by a center cone, which is a clamping means, with respect to a spindle, which is a rotation driving means, and at this time, the disk is fixed by a magnetic head and a pad. The disk is held from both sides, and in this state, the disk is rotated by the spindle to record or reproduce the signal by the head.

By the way, in this case, when the center cone is clamped to the spindle of the disk, the center cone is recessed into the center hole of the disk to perform automatic centering of the disk, that is, centering.
Therefore, the holding of the disk by the head and the bed should be performed after the clamping of the disk by the center cone is completed. That is, otherwise, the function of centering the disk by the center cone cannot be obtained at all, and the signal is recorded or reproduced in an eccentric state.

However, the conventional device does not have any means for ensuring that the head and pad hold the disk after it has been clamped against the spindle by the center cone. Therefore, due to variations in the precision of the disk clamp mechanism and the head load mechanism, the disk may be held by the head and pad before the disk is clamped by the center cone. It often happened.

〔Purpose〕

The present invention has been made in view of the above circumstances, and uses a disk-shaped record carrier, which is clamped at its central portion by a clamp means to a record carrier rotation driving means, and at the same time, a recording or reproducing head. As a recording or reproducing device for recording or reproducing a signal by rotating the record carrier while sandwiched by a sandwiching means including a pad and / or a pad, before the record carrier is clamped to the rotation driving means by the clamp means. In addition, it is possible to surely prevent the occurrence of a situation where the record carrier is held by the head and / or the pad.

[Explanation by Examples]

Hereinafter, the means taken in the present invention to achieve the above object will be described by way of examples with reference to the accompanying drawings.

First, referring to FIG. 1, in the figure, 1 is a shear base of the device, 2 is a disc jacket DJ (FIG. 2)
Shows the jack insertion opening of the jacket holder for receiving the. Reference numeral 3 denotes a sub chassis plate attached to the base 1, which is provided with guide and positioning members for the disc jacket DJ and various mechanisms such as a disc clamp and a head load which will be described later.

Reference numeral 4 is an operating member for disk clamp and head load operation, 6 is a crank member pivotally supported by a shaft 7 and connected to the operating member 4 via a link member 5.
The lever has an arm portion 6a, which acts on the tip portion 8a of the disk clamp arm 8. The disk clamp arm 8 has a leaf spring portion 8b at its tail end,
Since the leaf spring portion 8b is attached to the chassis plate 3 with the screw 9, the leaf spring portion 8b can be vertically swung in a direction orthogonal to the paper surface of FIG. 1 and is biased upward by a spring (not shown). The magnetic disk FD in the disk / jacket DJ is mounted on the lower surface near the tip of the rotary spindle 12 (Figs. 4 to 6 (c)) as the disk rotation driving means in the center hole C thereof. A center cone 10 as a clamping means for clamping against is rotatably mounted by a shaft 11. The disc clamp arm 8 is rotated downward against a spring (not shown) by pressing the tip portion 8a of the clamp lever 6 downward by the arm portion 6a of the clamp lever 6, and the disk is rotated by the center cone 10. Clamp the FD to the spindle 12 (5th, 6th
Figure (c)). Also, in this clamp, as is well known, the center cone 10 automatically adjusts the disk FD, that is,
Centering is done.

Reference numeral 13 is a head carriage which is moved by a step motor 14 in the radial direction of the disk FD through a known mechanism, and 15 is a magnetic head for recording or reproducing at its tip.
The head arm that supports the unit 16 and the carriage 1 together with the head pressing frame 17 in the leaf spring 15a at its tail end.
By being fixed to the screw 3 by the screw 19, it is possible to swing up and down in the direction orthogonal to the paper surface of FIG. A spring for pressing the head arm 15 downward is provided between the head arm 15 and the head pressing frame 17 as shown in FIG.
18 are provided. A head load arm 20 is rotatably supported by a shaft 21 attached to a fixed frame member 22 and is given downward slidability by a torsion spring 23, and its arm portion 20a is Protrusion 16a provided on the side of the clamp arm 8 and the head unit 16
, And a disc pressing pad 24 made of sponge or the like is provided on the lower surface thereof as shown in FIG. Accordingly, when the clamp arm 8 is rotated downward by the arm portion 6a of the clamp lever 6, the head load arm 20 is rotated downward by the spring 23 so that the pad 24 is rotated. The head arm 15 is pressed against the surface, and with it the head arm 15 pivots downward under the action of a spring 18 to press the head unit against the disk surface. Although not shown here, a head unit 16 '(FIGS. 4 to 6 (b)) and a pad similar to the head unit 16 and the pad 24 are provided on the head carriage 13 at a position facing the head unit 16 and the pad 24. Therefore, the disk FD will be held by these head units and pads.

Reference numeral 25 is a slide lever attached to the operating member 4 and is engaged with pins 26a and 26b on the shear plate 3 at its long holes 25a and 25b, thereby being guided up and down in the figure, and A spring 28 tensioned between the pin 26b and the planting pin 27 urges it downward in the drawing. Reference numeral 29 is a hook member pivotally supported by a pin 27 on the lever 25 and biased counterclockwise by a spring 30 and engageable with the pin 25a. The slide lever 25 is a hook member. The engagement between 29 and the pin 25a results in being latched at this moving position. In the counterclockwise rotation of the hook member 29, the protrusion 29a of the hook member 29 is raised on the side of the lever 25 at the rising portion 25c.
It is regulated by engaging with. Reference numeral 31 is a pin provided on the hook member 29.

Reference numeral 32 is a rotary lever which constitutes a control means for controlling the head load in cooperation with the hook member 29. The rotary lever 32 is rotatably supported by a shaft 33 provided on the shear plate 3 and is supported by a spring 34. It is urged counterclockwise in FIG. 2, and the arm 20a of the head load arm 20 is attached to its tip.
An engaging piece 32a engaging with the lower surface of the hook member 29 and an engaging piece 32b engaging with the lower surface of the hook member 29 are provided at the tail ends thereof. The details of the rotating lever 32 are shown in FIG.

Reference numeral 35 is an eject lever, 36 is an eject spring for urging the eject lever, and 37 is an eject operation member.

In the above structure, when the disc jacket DJ is ejected, the slide lever 25 is converted downward by the spring 28 as shown in FIG. Is converted upward by a spring (not shown), and its center cone 10 is shown in FIG. 4 (c).
As shown in FIG. 4, the head unit 16 is separated from the spindle 12, and accordingly, the head unit 16 is also converted upward so as to be separated from the lower head unit 16 'as shown in FIG. 4 (b).

In this state, when it is inserted into the disc / jacket DJ holder through the jack insertion opening 2 in FIG. 1, the eject lever 35 is pushed upward in FIG. 1 at this time, and
When the jack DJ is inserted to a predetermined position in the holder, the eject lever 35 is locked by a locking member (not shown). At this time, the eject spring 36 is charged.

Next, when the operating member 4 is pressed with the jacket DJ inserted to the predetermined position, the clamp lever 6 is rotated clockwise through the link member 5, and at this time, the arm portion thereof is rotated.
6a presses the tip 8a of the clamp arm 8 to clamp it.
The arm 8 is rotated downward against a spring (not shown). As the clamp arm 8 descends, the head load arm 20 also tries to rotate downward, but in this case,
The lowering of the load arm 20 is prevented by the turning lever 32. That is, the slide lever is pressed by pressing the operation member 4.
25 moves upwards against the spring 28, and in the process of this movement, the hook member 29 moves clockwise against the spring 30 by the engagement of the cam portion 29b of its head with the pin 26a. As a result, as shown in FIGS. 5 (a) and 5 (b), a part thereof is positioned on the engaging piece 32b of the rotating lever 32 and the rotating lever 32 is rotated clockwise. It comes to block. Therefore,
The head load arm 20 engages with the engaging piece 32a of the turning lever 32 at its arm portion 20a so as to be prevented from turning downward, and eventually, the head unit 16 and the pad 24. Is retained at a position distant from the lower head unit 16 'as shown in FIG. 5 (b), and only the center cone 10 descends to move to the jacket as shown in FIG. 5 (c). DJ
The inner disk FD is clamped to the spindle 12 while being centered in its center hole C.

Then, the operation member 4 is further pressed and the slide lever 25
When the cam portion 29b of the hook member 29 comes to be disengaged from the pin 26a by further shifting the hook member, the hook member 29
As shown in FIG. 6 (a), 29 is rotated counterclockwise by the spring 30 so as to catch the pin 26a at its hook portion 29c, and as shown in FIG. 6 (b). Hook member 29
Is retracted from the engaging piece 32b of the rotating lever 32, the rotation of the rotating lever 32 is released, and accordingly, the head 23 is rotated downward by the spring 23, so that the pad 24 and the head 24 are rotated.・ Unit 16 will be loaded to the disk FD.

As described above, in this embodiment, the head load, that is, the clamping of the disk FD by the upper and lower head units 16 and 16 'and the pad 24 is performed by the center cone 10 to clamp the disk FD spindle 12. Since it will be triggered later, the danger that the center cone 10 will clamp the disk FD again and hinder the centering operation again will be eliminated.

When the operating member 37 that should eject the jacket DJ is pressed, the hook member 29 pushes the pin 31 to the right by a means (not shown) to rotate the pin clockwise against the spring 30. To release the trap of 26b, the slide lever 25 is slid downward by the spring 28, whereby the head unit 16 and the pad 24 and the center cone 10 are moved to the separated positions shown in FIGS. , I.e., returned to the unload and unclamp positions. At the same time, the lock on the eject lever 35 is released, and the eject lever 35 slides downward in FIG. 1 by the acting force of the spring 36. At this time, the eject DJ is ejected through the jack insertion port 2.

Although one embodiment of the present invention is as described above, one of the head units 16 and 16 'may be replaced by a pad. Further, instead of the combination of the hook member 29 and the turning lever 32, for example, the head load arm 20 is held at the position of FIG.
The fact that the disk FD is clamped by the center cone 10 when the arm 8 descends is detected through a switch or the like, and the head load by electromagnetic means is detected based on the signal.
A configuration may be adopted in which the holding of the arm 20 is released and head loading is performed.

〔effect〕

As described above in detail, according to the present invention, there is provided a recording or reproducing apparatus in which the recording / reproducing head and / or pad is brought into contact with the disk according to the operation of mounting the disk on the rotating spindle. And rotatably supports a clamp member for clamping the disk brought onto the spindle to the spindle, and the clamp member is separated from the spindle in a non-clamp position and the disk is sandwiched between the non-clamp position. Clamping means that can move between a clamp position that is pressed against the spindle,
The head and / or pad are supported, and a head arm that is movable between a separated position where the head and / or pad is separated from the disk and a holding position where the disk is held are engaged with the head arm. A head load arm that is locked while holding the head arm in the separated position when in the clamp position engages with the clamp means to move the clamp means from the non-clamp position to the clamp position. A clamp lever for performing a clamp operation and the head load arm are engaged, and the locking of the head load arm is released according to the operation of the clamp lever for performing the clamp operation. After completing the movement of the means from the unclamped position to the clamped position, The recording medium is clamped by the head and / or the pad before the recording medium is clamped by the clamping means with respect to the rotary drive means by the control means for moving the recording arm to the clamping position. It is possible to reliably prevent the occurrence of such a situation, which is extremely useful in such a device.

[Brief description of drawings]

FIG. 1 is a plan view of an essential part of one embodiment of the present invention, particularly related to the present invention, FIG. 2 is a perspective view of an essential part related to the present invention in the apparatus shown in FIG. 1, and FIG. 2, an enlarged perspective view of the rotating lever in FIG. 2, FIGS. 4 (a), (b), (c), and FIG. 5 (a),
6 (b), (c) and FIGS. 6 (a), (b), (c) are partial views showing the operation of the main parts when the disk is loaded. 4 …… Disk clamp and head load operation member 6 …… Clamp lever 8 …… Clamp arm 10 …… Center cone 12 …… Spindle 13 …… Head carrier 15 …… Head arm 16,16 ′ …… Head unit 17 …… Pressing frame 20 …… Head load arm 24 …… Pad 25 …… Slide lever 29 …… Hook member 32 …… Rotating lever 35 …… Eject lever 18,23, 28,36 …… Spring 37 …… Operation member for eject DJ …… Disk / jacket FD …… Flexible magnetic disk C …… Center hole

Claims (1)

[Claims] 1. A recording or reproducing apparatus adapted to bring a recording / reproducing head and / or a pad into contact with the disk according to an operation of mounting the disk on a rotating spindle. A clamp member for rotatably supporting the received disk on the spindle is rotatably supported, and a clamp position in which the clamp member is separated from the spindle and a clamp which is pressed against the spindle while sandwiching the disk. Clamping means movable between a position and a head arm that supports the head and / or pad and moves the head and the pad apart from the disk, and a holding position that holds the disk. Engage the head arm and release the head arm when the clamping means is in the unclamped position. A headward arm that is locked while being held in a position; a clamp lever that engages with the clamp means and performs a clamp operation that moves the clamp means from the non-clamp position to the clamp position; The locking of the head load arm is released according to the operation of engaging the head load arm and performing the clamping operation of the clamp lever, and the clamp is operated from the non-clamping position of the clamp means. A recording or reproducing apparatus comprising: control means for moving the head arm to the holding position after completion of the movement to the position.