JP2651338B2 - Recording or playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for loading a record carrier in a recording or reproducing apparatus using a disc-shaped rotary record carrier such as a rotary magnetic sheet. Means to attach to

[0002]

2. Description of the Related Art In a recording or reproducing apparatus using a disk-shaped rotating record carrier, for example, a rotating magnetic sheet, a magnetic sheet is attached to a center core, and the center core is mounted on a spindle which is connected to a rotation driving unit such as a sheet rotating motor. The record carrier is loaded by being fitted. In this type of device,
If the fit between the center core and the spindle is loose, the magnetic sheet does not rotate normally during the recording or reproducing operation. Conversely, if the fit is tight, the two will not fit smoothly. .

Therefore, as described below with reference to FIG.
A device has been proposed in which a magnetic material is fixed to a center core, and a magnet is attached to one spindle, and the two are coupled by magnetic force.

[0004]

However, in this type of magnetic coupling apparatus, when the center core is mounted on the spindle, the center core is mounted on its reference surface (for example, the flange surface 8a of the spindle 8 in FIG. 4 described later). ), It is difficult to secure the magnetic sheet on a predetermined mounting surface for maintaining a predetermined contact state between the magnetic sheet and the recording or reproducing head. Also, in a still image recording or reproducing device that requires strict mounting accuracy, a force of about 100 grams is required to mount the center core to the spindle, so that the magnet becomes large and hinders the reduction in size and weight of the device. Become.

Further, as in a floppy disk device, there has been proposed a device provided with a mechanism for pressing the center core on the spindle on the upper surface of the center core. This mechanism rotates while the mechanism is kept pressed against the spindle, so that there is a disadvantage that the load is increased and the rotation becomes uneven.

Therefore, the present invention solves the above-mentioned disadvantages of the conventional apparatus, and allows the center core of the record carrier to be accurately mounted on the rotary drive section, and the contact state between the rotary record carrier and the recording or reproducing head. It is an object of the present invention to provide a record carrier loading device which can maintain a predetermined state of the record carrier, and does not apply a large load to the rotational drive of the record carrier, thereby making it possible to reduce the size of the rotational drive unit. I do.

[0007]

According to the present invention, in order to solve the above-mentioned problems, according to the present invention, a first position where a record carrier can be attached and detached, and the record carrier can be moved to a predetermined loading position in an apparatus main body. A holder arranged to be movable up and down between a second position to be loaded, a spindle engaged with a center hole of a center core of the record carrier loaded at the loading position to rotate the center hole, and A pressing member supported on the holder at a position opposite to the spindle with the carrier interposed therebetween, the pressing member elastically pressing the center core of the recording carrier toward the spindle by a lowering operation of the holder; When the holder is located at the position, the pressing member is held at a position separated from the record carrier, and the pressing unit is interlocked with the operation of moving the holder from the first position to the second position. Control means for urging the pressing member in the direction of the center core and pressing the pressing member with a predetermined pressing force, and subsequently releasing the pressing force to separate the pressing member from the center core. The portion for pressing the center core includes a plurality of pressing portions formed of an elastic member, and is configured to press both sides of the center hole on the center core.

[0008]

According to the present invention, the pressing force is averaged by elastically pressing the center core of the record carrier to the spindle with the pressing member and pressing both sides of the center hole of the center core in conjunction with the operation of the holder. Thus, mounting to the spindle is performed reliably and smoothly. After the mounting is completed, the pressing member is separated from the center core, and the control is performed so that the rotation of the record carrier is not added.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the accompanying drawings, a conventional record carrier loading apparatus, the configuration of a first embodiment of a record carrier loading apparatus according to the present invention, its operation, a second embodiment, and a third embodiment will be described. And the order of the modified examples of these embodiments will be described in detail. The following description is made for an example in which the record carrier is a rotating magnetic sheet.

Conventional Record Carrier Loading Apparatus (FIGS. 1 and 2) Prior to description of a conventional record carrier loading apparatus, a known magnetic sheet jacket shown in FIG. 1 will be described. In the drawing, reference numeral 1 denotes a magnetic sheet, and 2 denotes a jacket for accommodating the magnetic sheet 1, which is formed of a box-shaped frame as shown.
Reference numeral 3 denotes a center core to which the magnetic sheet 1 is fixed, 4 denotes an opening for inserting a spindle described later, and 5 denotes an opening for inserting a magnetic head described later. The magnetic sheet 1 is housed in the jacket 2 and loaded into a recording or reproducing apparatus by, for example, a means described later, and recording or reproducing is performed in a known manner.

FIG. 2 is an exploded sectional view of a conventional recording carrier loading apparatus, and shows a state where the jacket 2 is loaded by a two-dot chain line. In the figure, members denoted by the same reference numerals as those in FIG.
It has the same configuration and function as the member of. As for the other members, 6 is an internal chassis of the recording or reproducing apparatus, 7 is a sheet rotating motor mounted on the chassis 6, and 8 is a spindle of the sheet rotating motor 7. The above-mentioned center core 3 is for accurately attaching the magnetic sheet 1 to the spindle 8. 9a is a head chip of a magnetic head which is a recording or reproducing head, and 9b is a mounting portion thereof. 10 is a magnetic material fixed to the lower surface of the center core 3,
Numeral 11 denotes a magnet mounted on the upper surface of the spindle 8, which has conventionally been used to magnetically couple the center core 3 with the spindle 8. However, with this device,
As described above, it is difficult to ensure that the magnetic sheet 1 is maintained at the predetermined mounting surface, and the load on the sheet rotating motor 7 increases.

In another conventional example in which a mechanism for pressing the center core 3 against the spindle 8 is provided on the upper surface of the center core 3, the sheet rotation motor 7 also rotates using these mechanisms as a load as described above. This increases the load and causes rotation unevenness.

The configuration of the first embodiment of the record carrier loading apparatus according to the invention of this application (FIGS. 3 to 5). The first and second aspects of the present invention are combined and embodied, and a first embodiment of which is shown in FIGS.
FIG. 3 is a sectional view of the loading device, showing a stationary state, and FIG.
Is a state where the jacket holder is lowered in the direction A in the figure,
FIG. 5 also shows a state in which it is raised in the direction B in the figure.

In these figures, members having basically the same structure and function as the members in FIGS. 1 and 2 are denoted by the same reference numerals as those in FIGS. 1 and 2, and the description thereof will be omitted. Reference numeral 21 denotes a jacket holder, and the magnetic sheet jacket 2 is inserted into the holder, loaded into the rotation drive unit, and taken out of the apparatus from the holder. 22
Are a plurality of support portions of the jacket 2 and are provided on the chassis 6. These may be formed integrally with the chassis 6 or may be formed separately. An arm 23 is an example of an urging member according to the present invention, and is configured to be rotatable about a shaft 24. The shaft 24 is attached to a chassis 25 formed integrally with or separate from the chassis 6. Reference numeral 23a denotes a bent end of the arm 23. As shown in FIG. 4, when the arm 23 is rotated clockwise, the center core 3 is pushed into the spindle 8 at the end 23a. For this purpose, for example, two knife edge-shaped ends 23a may be provided, and the annular upper surface of the center core 3 may be pressed by the front side and the back side of the paper surface of FIG. 4, respectively. 23b is the arm 23
A protruding portion extending from FIG.
b ′ and 23b ″.

Reference numeral 26 denotes a lever, which is rotatable about a shaft 27 erected on the arm 23. Reference numeral 28 denotes a torsion spring which is wound around a shaft 27, one end of which is hung on a lever 26, and the other end of which is a contact portion 23 of a projection 23b.
Press b '. The lever 26 is connected to the torsion spring 2.
8 receives a force that rotates clockwise about the shaft 27, and the end 26a is brought into contact with the contact portion 23b ″ of the protrusion 23b.
Power to turn. 29 is a lever, which is a chassis 25
Can be moved about the shaft 30 implanted in the lever 26. When the shaft 30 is turned counterclockwise, the end 29a is moved to the end 2 of the lever 26.
6b. Reference numeral 31 denotes a pin set on the lever 29,
Is fitted in the long hole portion 21a provided in the hole. 32 is a spring for rotating the arm 23 in a counterclockwise direction, and 33 is an arm 2
3 is a positioning portion for regulating the counterclockwise rotation of No. 3.

The operation of the first embodiment of the recording carrier loading apparatus according to the present invention (FIGS. 3 to 5) In the above-described configuration, the magnetic sheet jacket 2 is connected to the jacket holder 21.
And the holder 21 is lowered in the direction A in the figure. For this purpose, for example, the holder 21 is connected to the apparatus main body or its lid by a hinge provided on the back side of the paper surface of FIG. 3, and the holder 21 is manually operated or by some driving means.
Should be lowered. As the holder 21 descends, the pin 31 fitted in the elongated hole 21a moves in the direction A, whereby the lever 29 rotates in the direction D in FIG. Therefore, the end 29a of the lever 29 comes into contact with the end 26b of the lever 26, and the lever 26 rotates in the E direction. Since the lever 26 is in contact with the abutting portion 23b "of the protruding portion 23b of the arm 23 at the end 26a, the lever 23 rotates in the same direction E about the shaft 24, and the lever 23 pivots at the center at the end 23a. The core 3 is pressed and pressed into the spindle 8. In this case, it is assumed that the distance Q between the lower surface of the center core 3 and the flange surface 8a of the spindle 8 is adjusted to zero in FIG. Since the core 3 is usually made of plastic, there is a large variation in the inner diameter when the core 3 is fitted with the spindle 8. However, according to the above-described structure, the inner diameter is designed to be smaller to be affected by the variation. This effect is suitable for mass production, and this effect can be expected in other embodiments described later.

When the jacket holder 21 further moves down in the direction A, the end portion 29a keeps rotating in the direction D and the end portion 26b keeps rotating in the direction E, so that the levers 29 and 26 are separated from each other. And on the arm 23,
Since a rotational moment in the counterclockwise direction (direction B in the figure) is exerted by the spring 32, the arm 23 rotates in the direction B as soon as the levers 29 and 26 separate, and the positioning portion 33
The position is regulated by. It should be noted that if a portion C in FIG. 4 in the arm 23 is made elastic, the above-described series of operations is performed smoothly. Since the end 23a of the arm 23 is separated from the center core 3 by the rotation of the arm 23, no extra load is applied to the sheet rotation motor 7, which is a rotation drive source, and the center core 3 and the spindle 8 are firmly rubbed by friction. The magnetic sheet 1 is rotated by the combination, and recording or reproduction is performed by the magnetic head 9a.

After the end of the recording or reproducing operation, the jacket holder 21 is raised in the B direction by the reverse operation of the above operation for lowering the jacket holder 21 in the A direction. This state is shown in FIG. By this ascending operation, the pin 31 and thus the lever 29 rotate in the F direction about the shaft 30, and the end portion 29a
Abuts on the end 26b of the lever 26 again, but this movement is a movement in a direction opposite to that when the center core 3 is mounted on the spindle 8, so that the lever 26 rotates around the shaft 27 in the G direction. , Ends 26b and 29a are separated. Therefore, the lever 26 is moved by the torsion spring 28 in FIG.
Return to the first position shown in. In this state, the jacket 2 is taken out of the holder 21.

Second Embodiment of the Record Carrier Loading Apparatus According to the Invention of the Present Application (FIG. 6) In FIGS. 6 and 7, members such as a center core, a sheet rotating motor and a spindle are not shown. ,
These are configured and arranged in the same manner as in the first embodiment. 6, reference numeral 41 denotes a member that moves integrally with the jacket holder 21, reference numeral 42 denotes a lever, and reference numeral 43 denotes a member 41 and a lever 4.
2 is a spring applied between them. The lever 42 receives a rotational moment in the H direction in the figure around a shaft 44 erected on the member 41 by a spring 43. Reference numeral 21b denotes a projecting portion of the jacket holder 21 and an end portion 4 of the lever 42.
2a. Reference numeral 42b denotes the other end of the lever 42, which abuts on a cam portion 23c provided on the arm 23.

As in the first embodiment, when the jacket holder 21 descends in the direction A in the figure, the lever 42 also descends, and its end 42b presses the cam portion 23c of the arm 23. It rotates in the direction I, and its end 23 a presses the center core 3 and pushes it into the spindle 8. Holder 21 is further lowered to end 42
When b exceeds the cam portion 23c, the arm 23 returns to the original position by the spring 32, and the end portion 23a moves away from the center core 3. When the holder 21 rises in the direction B in the drawing after the recording or reproducing operation is completed, the end 42b comes into contact with the cam portion 23c from the direction opposite to the above. However, if the spring 43 is weakened, the lever 42 will move to the position H in the drawing. Rotate in the opposite direction to the direction
When the holder 21 is raised to a predetermined position, the lever 42 returns to the initial position shown in FIG. Through a series of these operations, the arm 23 is urged in the same manner as in the first embodiment, whereby the center core 3 is pushed into the spindle 8, and subsequently the end 23a of the arm 23 is moved away from the center core. Operate.

Third Embodiment of the Record Carrier Loading Apparatus According to the Invention of the Application (FIG. 7) In FIGS. 7A and 7B, reference numeral 21c denotes a projecting portion of the jacket holder 21, reference numeral 51 denotes a slide lever, and reference numeral 52 denotes a slide lever. The spring 52 includes a protrusion 21 c and a slide lever 5.
The slide lever 51 is always urged in the direction opposite to the paper surface. 53
A pin mounted on the jacket holder 21 guides the slide lever 51 so as to be slidable, and regulates the slide lever 51 so as not to slide beyond a predetermined range. 5
Reference numeral 4 denotes a pin erected on the slide lever 51, which extends in the rear direction of the drawing and is inserted into a groove 55 provided in the arm 23. The groove 55 has a D-shape as viewed from the surface of the paper as shown in FIG. 7 (b), and its m, n and p portions have a constant depth, and the q portion gradually increases from below to above in the figure. Since the step 54 is formed at the upper end portion r, the movement of the pin 54 due to the lowering and rising of the jacket holder 21 always rotates in the groove 55 first in the K direction and then in the L direction. Move.

In the above configuration, when the jacket holder 21 descends in the direction A in FIG.
Moves the m portion of the groove 55 in the K direction, so that the arm 23 rotates about the shaft 24 in the J direction in the figure. By the rotation of the arm 23, the end 23a is moved to the center core 3 in the same manner as described above.
And pushes it into the spindle 8. When the holder 21 further moves down in the direction A, the pin 54
The arm 23 pivots in the direction opposite to the J direction, and when the pin 54 reaches the position p, the arm 23 returns to the original position, and the end 23 a is moved to the center core 3. Move away from

When the holder 21 rises in the direction B in the drawing after the recording or reproducing operation is completed, the pin 54 moves in the groove 55 from p to q in the L direction. Slides against the spring 52 in the front direction of the paper surface, and when reaching the upper end r of the groove 55, the slide lever 51 is urged by the spring 52 in the reverse direction of the paper surface, and the pin 53
Stops at a predetermined position and returns to the original state. The arm 23 remains stopped during the movement of the pin 54 in the L direction. Through a series of these operations, the arm 23 is urged in the same manner as in the first and second embodiments, whereby the center core 3 is pushed into the spindle 8, and subsequently the end 23a of the arm 23 is moved to the center core 3 Work away from

Modification of the above-described embodiment In the above-described embodiment, a magnetic body is fixed to the center core 3 in FIG. The biasing member such as the arm 23 in FIG. 3 may be controlled by other means without interlocking with the operation of loading the record carrier. In addition, when implementing the invention of this application, for example, the following modifications are possible.

In a device in which the jacket 2 accommodating the record carrier is inserted into the jacket holder 21 by a drive source such as a motor and lowered and raised in the directions A and B of FIG. 3, the center core 3 is driven by the power of the drive source. After being pushed into 8, the arm 23 can be configured to return to its original position.

In the above-described embodiment, the end portion 23 of the arm 23 which is the urging member of the center core 3 during the loading operation of the record carrier.
Although a is configured to separate from the center core 3, the end 23a may be configured to separate after the loading operation is completed. For example, in the second embodiment, the cam 23c in FIG. 6 may have a shape in which the cam lift gradually increases from the upper side to the lower side in the figure and rapidly decreases from its maximum position. The shape of the groove 55 in FIG. 7 may be a right-angled right triangle in the figure instead of the D-shape in the figure.

[0027]

As described above in detail, according to the present invention, the holder for accommodating the recording carrier by providing the pressing member for elastically biasing the center core of the recording carrier in the direction of the recording carrier mounting surface. By operating this pressing member in conjunction with the loading operation of the above, the center core of the record carrier can be attached to the spindle, so that the contact state between the record carrier and the recording or reproducing head can be determined with a simple configuration. In addition to being able to maintain the state, the portion for pressing the center core is configured as a plurality of pressing portions formed of an elastic member so as to press both sides of the center hole on the center core. The center core can be pressed evenly and the center core can be mounted smoothly on the spindle without incomplete mounting due to kinks etc. It can be carried out.

After the center core of the record carrier is attached to the record carrier rotation drive unit, the elastic member is controlled so as to be detached from the center core. The contact state with the reproducing head can be maintained at a predetermined state, and the biasing member or the like is not loaded on the rotary driving section during the recording or reproducing operation. Can be.

[Brief description of the drawings]

FIG. 1 is a perspective view of a known magnetic sheet jacket.

FIG. 2 is an exploded sectional view of a conventional record carrier loading device.

FIG. 3 shows a first example of a record carrier loading device according to the invention of this application.
Sectional view of the embodiment of

FIG. 4 is an operation explanatory view in a state where the jacket holder is lowered and a state where the jacket holder is raised in the apparatus of FIG. 3;

FIGS. 5A and 5B are explanatory views of the operation of the apparatus shown in FIGS.

FIG. 6 is a sectional view of a main part of the second and third embodiments of the record carrier loading apparatus according to the invention of the present application, respectively.

FIG. 7 is a sectional view of a main part of the second and third embodiments of the record carrier loading apparatus according to the invention of the present application, respectively.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magnetic sheet which is a record carrier 2 Jacket 3 Center core 7 Sheet rotation motor 8 Motor spindle 21 Jacket holder 23 Arm 23a Its end 23c Cam 24,27,30,44 Shaft 26 Lever 26b Its end 28 Torsion spring 29 Lever 29a Its end 31,53,54 Pin 32,43,52 Spring 33 Positioning part for arm 23 41 Member that moves integrally with jacket holder 21 Lever 42b Its end 51 Slide lever 55 Groove provided on arm 23

Claims (1)

(57) [Claims] 1. A holder arranged so as to be able to move up and down between a first position where a record carrier can be attached and detached, and a second position where the record carrier can be loaded into a predetermined loading position in an apparatus body. A spindle engaged with a center hole of a center core of the record carrier loaded at the loading position to rotate the spindle, and supported on the holder at a position opposed to the spindle with the record carrier interposed therebetween; A pressing member that elastically presses the center core of the record carrier against the spindle by a lowering operation of the holder; and a position that separates the pressing member from the record carrier when the holder is at the first position. Hold on to
In conjunction with the movement of the holder from the first position to the second position, the holder is urged in the direction of the center core by pressing the pressing member with a predetermined pressing force. Control means for releasing the pressing force to separate the pressing member from the center core, wherein the pressing member is constituted by a plurality of pressing portions in which a portion for pressing the center core is formed of an elastic member, A recording or reproducing apparatus characterized by being configured to press both sides of the center hole on the center core.