JPS61227263A - Loading device of recording media - Google Patents

Abstract

PURPOSE:To obtain a secure detachable mechanism by elevating and detaching a cartridge while a engaging protrusion is inserted to a hole for engagement provided at the cartridge to accommodate recording media. CONSTITUTION:When a disk cartridge 6 is inserted along an inserting path, at the tip of the disk cartridge 6, respective protruded pieces 76a and 76b are pressured at the position in the lower direction from the position of roller shafts 69a and 69b which are the center of the rotation, consequently, respective protrusions 75a and 75b at the upper part side from the rotation central position are rotated in the clockwise direction and respective protrusions 75a and 75b are respectively engaged to holes 34a and 34b for positioning the disk cartridge 6. Since protrusions 75a and 75b are inserted into holes 34a and 34b for positioning, a disk cartridge 6 descends while tracks to draw about 1/4 circular arc are drawn with the length from the center of the levers 12a and 12b to the edge part as a radius, in the condition to prevent the running-away from the cartridge holder 18, together with the cartridge holder 18, in the condition inserted in the inserting direction, namely, in the condition held in parallel to a disk receiver 27.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a recording medium mounting device suitable for reliable mounting.

[Technical aspects of inventions and their problems] In recent years, the progress of information-related industries such as computers has been remarkable, and the number of information subjects handled is rapidly expanding.

For this reason, information can be optically recorded at high density on a disc-shaped recording medium (hereinafter referred to as a disk) and reproduced at high speed using laser light instead of a conventional magnetic head. Optical recording and reproducing devices are attracting attention.

As mentioned above, when recording information at a high density or reading information recorded at a high density, if there is dust on the disc, incorrect recording or playback may occur, so the disc is generally stored in the cartridge. It is stored in.

In addition, when this cartridge is not installed in a recording or playback device, it covers the recording surface (generally both sides) of the disc.
When installed in the device, at least the portion along the radial direction is open, and after installation, the disk is rotated to allow the optical pickup device to access any concentric or spiral track to read information. Write or
This allows it to be read out.

Conventionally, in the above-mentioned disk cartridge mounting device, when a disk cartridge resin, which has been pressed and inserted against an insertion guide hole, is inserted to a predetermined position, it is moved in a direction perpendicular to the insertion direction to move the hinter ball of the disk onto the taper of the disk guide. The disc is fitted onto the surface, and then the disc is rotatably supported by a disc clamp member.

The above disk cartridge is a flexible magnetic recording medium (
Since the disk cartridge is thicker than a floppy disk (so-called floppy disk) cartridge, the amount of movement required to move the disk cartridge to the disk guide after it is inserted into the specified position is large, so it is important to ensure that the disk cartridge does not escape during the process. desirable.

When holding the disc in the above-mentioned state so that it does not escape, the holding position must be a reliable reference position for each disc or disc cartridge, and the disc cartridge must be smoothly removed from the cartridge holder during the eject operation. It is required that the device be removable.

For this reason, there is a need for a device that uses a disc cartridge to reliably mount a disc onto a disc guide.

[Object of the Invention] The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a recording medium mounting device that allows a recording medium to be mounted reliably and smoothly.

[Summary of the Invention] The present invention realizes a reliable attachment/detachment mechanism by lifting and lowering the cartridge to attach/detach the cartridge with the engagement protrusion engaged in the engagement hole provided in the cartridge housing the recording medium. are doing.

[Embodiments of the invention] Hereinafter, the present invention will be specifically explained with reference to the drawings.

1 to 13 relate to one embodiment of the present invention, FIG. 1 is a perspective view of one embodiment in which a disk is mounted (however, the disk clamping means and bias coil are removed), and FIG. The figure is a side view of Fig. 1, Fig. 3 is a side view of the disc installed state, Fig. 4 is a plan view of Fig. 2, Fig. 5 is a plan view of Fig. 3, and Fig. 6 is a plan view of Fig. 3. 7 is a perspective view showing the disk cartridge, FIG. 8 is a side view showing the peripheral part of the locking piece, FIG. 9 is a side view showing the rotating piece to which the pressing piece is attached, and FIG. 10 11 is an explanatory view showing that the disc is set to the installed state when the locking piece is released, and FIG. 11 is a side view showing that the disc is held in the cartridge holder while it is being installed. , FIG. 12 is a schematic side view showing the four-bar link that holds the disk clamping means, and FIG. 13 is a schematic side view showing the four-bar link that holds the disk clamping means and the bias coil.

A (disk) mounting device 1 according to one embodiment used in a magneto-optical recording and reproducing apparatus has an eject plate 3 placed on spacers erected at four locations on a substrate 2, and eject plates 3 corresponding to the spacers. An eject guide 5 provided on the upper end surface of each spacer is inserted into each guide groove 4 provided at four locations, and an eject plate 3 is mounted so as to be movable in the longitudinal direction of the guide groove 4, that is, in the front-rear direction. .

The front end of the eject plate 3 provided with the guide groove 4 (in FIG. 1, the right side where the disk cartridge 6 in the mounting device 1 is inserted is the front, and the disk cartridge 6 is inserted into the mounting device u1) The eject operation knob 7 is located in the center of the left side (the front is the tip).
is installed protrudingly. This eject knob 7 has a board 2
A guide groove 9 into which a cartridge receiver 8 installed upright is inserted.
is the provision.

The cartridge support 8 supports the rear side of the back surface of the disk cartridge 6 when the disk cartridge 6 is installed.In addition to this cartridge support 8, there is also a cartridge support that supports the front side of the disk cartridge 6. 9a and 9b are erected at two positions on the left and right sides of the rear side of the board 2.

The eject plate 3 has a substantially rectangular shape, and is tapered (opened) from the center to the rear side.
Side frames 10a and 10b are installed at the front and rear of the left and right sides, respectively:
10a, 10b upright IL, each side frame 10a (or 10b
) is provided with a guide groove 11a (or 11b) in the vertical direction, and each guide groove 11a (or 11b) is pivoted to one end of each dogleg-shaped lever 12a (or 12b). The roller shaft 13a (or 13b) is engaged via a rotatable roller.

The dogleg-shaped lever 12a (or 12b) is connected to the board 2.
Holding plates 16a (or 16
In b), the roller shaft 1 is placed at the center of the dogleg shape.
7a (or 17b) is rotatably supported via a roller.

Moreover, the other end of the lever 12a (or 12b) is
A roller shaft 19a (or 19
b) is pivotally supported with an O-ra interposed therebetween. Note that the roller shafts are each prevented from being pulled out using retaining rings 20a (or 20b).

The cartridge holder 18 is shown in FIG. 1 or 4, for example.
As shown in the figure or FIG. 6, a guide frame 22a for guiding the insertion of the disk cartridge 6, which has an opening-shaped cross section in the front and back on both sides of the cartridge holder main body 21 formed of a substantially square plate-like member; 22b is bent so that the disk cartridge 6 can be inserted through the opening 23 at the front end of both guide frames 22a, 22b.

An opening 24 is formed by cutting out the rear part from the center of the cartridge holder main body 21, and a disk-shaped recording medium used for recording and reproducing using the magneto-optical effect is placed on the substrate 2, etc. below the opening 24. A spindle motor (indicated by the reference numeral 25 in FIGS. 2 and 3) is attached to rotate a disk 25 as a medium, and a disk holder 27 is attached to the rotating shaft of the spindle motor 25 that projects upward. A disc guide 29 having a tapered surface 28 is mounted inside the disc holder 27.

The tapered surface 28 of the disc guide 29 fits into the center hole 30 of the disc 25 when the disc cartridge 6 is inserted, lowered, and installed in a predetermined position. It is designed to support the concentric ring portions. (See FIG. 10 or FIG. 12) A magneto-optical pickup device (not shown) is installed below the opening 24 of the cartridge holder main body 21 at a rear position adjacent to the disk guide 29 in the longitudinal direction of the opening 24, that is, at a rear position adjacent to the disk guide 29. It is designed to be movable in the radial direction of the mounted disk 25.

The opening 24 in the cartridge holder main body 21
The openings 32a, 32 are also cut out near the rear end on both sides of the
b, and the openings 32a, 32b move directly above the cartridge receivers 9a, 9b when the cartridge is installed, and the back side of the disk cartridge 6 is opened to each opening 32a.
, 32b so that it can be supported by the cartridge receivers 9a, 9b. (See FIG. 5) The cartridge receivers 9a, 9b have an engagement protrusion 33a concentrically protruding from the center of the upper end surface thereof.

33b (see FIGS. 2 to 4), and positioning holes 34a and 34bl formed on the left and right sides of the front side of the disk cartridge 6 when the disk 25 is mounted.
C The rear surface side of the disk cartridge 6 can be supported in a predetermined positioning state in which the protrusions 33a and 33b are respectively engaged.

By inserting the disk cartridge 6 through the opening 23 at the front end of the cartridge holder 18 along the inside of both guide frames 22a and 22b, the disk cartridge 6 is set to the installed state by a series of loading mechanisms described later, and has the structure shown in FIG. ing.

That is, the disk cartridge 6 that houses the disk 25 inside forms a cartridge body 36 by integrating an upper cartridge section 35A and a lower cartridge section 35B. The cartridge main body 36 is provided with a circular opening 37 in the center thereof so that the disk 25 can be clamped from both upper and lower sides when installed, and extends from the opening 37 to the front end side (when inserted). Apertures 38 for recording and reproduction are provided on both the upper and lower sides.

A pair of scissor-shaped shutter blades 39a and 39b are housed inside the openings 37 and 38 so as to cover each surface of the disk 25 facing the openings 37 and 38.

Each pair of shutter blades 39a, 39b is connected to a bin 41a fixed to the left and right corners of the rear side of the cartridge body 36.
, 41b, and a pair of shutter blades 39a are supported near the ends by coil springs 42a and 42b, respectively.
, 39b are urged to close together.

On the other hand, slide grooves 43a and 43b are provided on both sides of the cartridge main body 36, and each of these slide grooves 43
Hooks 448 and 44b are slidably attached to a and 43b, and each hook 44a and 44b is connected to a wire 45a.
, 45b are each fixed at one end, and the other end is a guide roller 46a.

It is fixed to the front ends of the shutter blades 39'a and 39b via 46b. Therefore, each hook 44a.

By sliding the shutter blade 44b from the state shown in FIG. 7 along the slide grooves 43a and 43b as shown by arrows 47a and 47b, each shutter blade 39a and 39b can be opened with the bins 41a and 41b as the center. That's how it is.

The hooks 44a and 44b are attached to the cartridge holder 18.
The hooks 44a and 44b protrude outside the guide frames 22a and 22b of the guide frame 22, and the hooks 44a and 44b are attached to the guide frame 22 for the disk cartridge 6 to be inserted for mounting the disk cartridge 6.
contacting the front ends of a and 22b in a state of protruding outward,
The movement of the disk cartridge main body 36 is restricted, and the hooks 44a and 44b move relatively within the slide grooves 43a and 43b (their positions move with the insertion operation), and the disk cartridge main body 36 side is inserted. Upon insertion, the pair of shutter blades 39a and 39b on both the upper and lower sides of the disk 25 are opened, so that the disk 25 is ready for clamping and recording or reproducing.

As described above, the cartridge main body 36 has positioning holes 34a penetrating vertically on both left and right sides of the front part thereof.
, 34b are provided.

Openings 37 provided on the upper and lower surfaces of the cartridge main body 36
．． 38 is opened and closed by a pair of shutter blades 39a, 39b, respectively. A disk 25 is housed in which a center hole 30 is provided between a pair of shutter blades 39a, 39b.

By the way, on the rear side of the cartridge holder 18,
It is activated at the front end of the inserted disk cartridge 6,
A loading mechanism is provided to set the disc 25 in a mounted state in which the disc 25 is rotatably clamped, and an eject mechanism is provided to eject the disc 25 by pressing the eject knob 7 from the disc 25 in the mounted state.

Support members 51a and 5 are provided on both sides of the rear portion of the substrate 2.
1b is erected, and for example, roller shafts 52a,
The base sides of locking pieces 53a and 53b for holding the cartridge holder 18 are rotatably supported via 52b.

The base side thereof is pivotally supported by the roller shafts 52a and 52b,
As shown in FIG. 8 or 10, each of the locking pieces 53a and 53b protruding forward has a locking notch 54a on the lower side of the tip that matches the shape of the end of the cartridge holder 18.
54b is provided.

On the other hand, the cartridge holder 18 has springs 56a at two positions on the left and right sides of the rear frame portion 55.

One end of each spring 56b is attached to the spring 56a.

Each other end of 56b is connected to supporting members 57a and 5 erected on the substrate 2.
7b (see Fig. 4).

The cartridge holder 18 has both springs 56a and 5.
6b, the springs 56a, 56b of the support members 57a, 57b are urged to be drawn diagonally downward in the direction in which the other ends of the springs 56a, 56b are fixed. In this biased state, when the loading mechanism is not activated, that is, for example, in the state shown in FIG. 2, the upper part of the rear end of the cartridge holder 18 is As shown by the solid line in FIG. 10, the internal retaining pieces 53a and 53b (one of them is shown in a locked state in the figure).

) is held in a locked state in contact with each of the notches 54a, 54b, and the cartridge holder 18 is held so as not to fall.

Cartridge holder 1 as shown in FIG. 8 or 10
The locking pieces 53a and 53b, which prevent the lowering of the cartridge holder 18 with the upper part of the rear end thereof engaged in the notch 548.54b, are attached to the rotation shown in FIG. Moving piece 58a.

The tips of pressing pieces 59a and 59b, which serve as unlocking members attached to the tip side of 58b, are in contact with the back surface thereof.

The base sides of the rotating pieces 58a and 58b are rotatably connected to roller shafts 61a and 61b via rollers at a position near the rear end of the cartridge holder 18. Therefore, the pressing pieces 59a, 5 are placed at a certain distance from the pivoted positions of the rotating pieces 58a, 58b.
9b are attached respectively. As shown in FIG. 8, the base ends (of the pressing pieces 59a, 59b) are installed at a distance shorter than the distance d from the pivoted position to the tips of the pressing pieces 59a, 59b. It is.

Also, in the locking pieces 53a, 53b, the tips of the pressing pieces 59a, 59b come into contact or nearly touch each other in the middle of the distance from the pivotally mounted roller shafts 52a, 52b to the respective notches 54a, 54b. That's how it is.

Note that the base end portions of the pressing pieces 59a and 59b are connected to the fifth
8 or 10, the cartridge holder 18 passes through the left and right notches of the rear frame 55 and rotates in a state that slightly protrudes inward from the deepest part of the insertion path for the disk cartridge 6. It is attached to pieces 58a and 58b.

Therefore, when the disk cartridge 6 is inserted, its front end comes into contact with the proximal ends of the pressing pieces 59a and 59b as shown by the solid line in FIG. When the pressing pieces 59a and 59b are inserted by pressing the pressing pieces 59a and 59b by a minute distance 1 as shown in
a and 59b rotate clockwise around the roller shafts 61a and 61b as shown by arrow 62A, and the amount of movement of the distal end becomes larger than the amount of movement of the base end due to the above-mentioned suppression, and this increased With the stroke, the middle positions of the back surfaces of the locking pieces 53a and 53b are flipped upward. As a result of this flip-up, the tips of the locking pieces 53a and 53b rotate largely counterclockwise around the roller shaft 52a as shown by the arrow 63A, and are at the position shown by the dashed line. 54b and the cartridge holder 18 are disengaged from each other.

When the locking by the inner retaining pieces 53a and 53b is released, the cartridge holder 18 is pulled diagonally rearward and downward by the biasing force C by both springs 56a and 56b, so that the cartridge holder 18 is Dog-shaped levers 12a and 12b are rotatably supported, respectively.
The cartridge holder 18 rotates counterclockwise around its central pivot point as shown by an arrow 64A in FIG. 10, and the cartridge holder 18 also descends in a 1/4 arc.

That is, the cartridge holder 18 is held in a state in which the disc cartridge 6 is housed inside it, that is, in a state in which it is held parallel to the disc holder 27, when both springs 56a, 5
The levers 12a and 12b move toward the back with the force of being drawn to the side, and at that time, they rotate with the length from the center to the end of the levers 12a and 12b as the radius of rotation, and as shown in the dashed line in FIG. 10 or as shown in FIG. It should be set to the installed state.

In this mounted state, the back surface of the disk cartridge 6 is supported by three cartridge supports 8.9a and 9b, and the center hole 30 of the disk 25 is fitted into the tapered surface 28 of the disk guide 29.

As will be described later, the disk 25 is rotatably pressed and held from the upper side by disk clamp means.

In addition, each locking piece 53a, 5, 3b is connected to the supporting member 51a, 5.
By leaf springs 65a and 65b attached to the upper end of 1b,
The disc 25 is pressed lightly so that the ends of the locking pieces 53a and 53b are urged not to rotate counterclockwise from the position shown by the solid line in FIG. 8, and the disc 25 is ejected from the MW state. At this time, the locking pieces 53a and 53b are rotated counterclockwise so that they can be returned to the locking position shown by the solid line in the figure.

By the way, both of the rear ends of the eject plate 3 mentioned above! II! I
Support plates 66a and 66b are erected on the SIT, and each support plate 6
Regulation υj rods 67a, 67b are provided on the upper end sides of 6a, 66b to protrude horizontally inward. On the other hand, levers 71 and 71b have roller shafts 69a and 69b pivotally attached to protrusions 68a and 68b that protrude rearward from the left and right ends of the frame portion 55 at the rear end of the cartridge holder 18, with rollers interposed therebetween.
is the provision.

The levers 71a, 71b move the substrate 2 around the roller shafts 69a, 69b as shown in FIG. 2 or 11.
It is installed so that it can rotate in a plane perpendicular to the In the illustrated embodiment, each lever 71a, 71b includes a lever body 72a, 72b, and a lever body 72a, 72b.
Lever pieces 73a and 73b protruding forward from the lever are bent and formed as a single piece.

As shown in FIG. 11, leaf springs 74a and 74b are attached to the rear sides of the lever bodies 72a and 72b (only one with the symbol a is shown in the figure), and the leaf springs 74a
, 74b come into contact with the regulating rods 67a, 67b to prevent the levers 71a, 71b from rotating clockwise. In this state, the lever pieces 73a, 73b
The protrusions 75a and 75b fixed to the tips of the cartridge holder 18 are retracted above the insertion path in the cartridge holder 18 into which the disk cartridge 6 is inserted. In this state, the lever bodies 72a, 72b have protruding pieces 76 formed adjacent to the protruding lever pieces 73a, 73b.
a and 76b project inward from the deepest part of the insertion path of the disk cartridge 6 in the cartridge holder 18.

When the disk cartridge 6 is inserted along the insertion path, each protrusion 7 is inserted at the tip of the disk cartridge 6.
6a, 76b are pressed at a position below the position of the roller shafts 69a, 69b, which are the centers of rotation, and therefore the projections 75a, 75b above the center of rotation are as shown in FIG. 11(a).
As shown in b), each protrusion 75a, 7 rotates clockwise.
5b is a hole 34a for positioning the disk cartridge 6.

34b, respectively.

The tips of the protruding pieces 76a, 76b are the pressing pieces 59a, 59.
The protruding piece 76a protrudes further inside the insertion path than the proximal end of the protruding piece 76a when the disk cartridge 6 is inserted.
, 76b are pressed and the levers 71a, 71b rotate,
At this time, the protrusion 75a.

75b will be engaged in the positioning holes 34a and 34b. In this way, from FIG. 11(a) to FIG. 11(b)
Move to the state shown in . The state just before moving to FIG. 8(b), that is, the state just before the protrusions 75a and 75b are completely inserted into the holes 34a and 34b, is shown by the solid line in FIG. 8 or 10. state. In other words, the inserted tip of the disk cartridge 6 is the pressing piece 59a,
59b, and then the little finger (symbol 1 in Fig. 8)
) When moved, the disk cartridge 6 presses the pressing pieces 59a, 59b backward as described above, and the pressing piece 59a is then pressed and moved.

59b, the locking pieces 53a, 53b are flipped up as shown by the dashed line, and the locking pieces 53a.

The locking of the cartridge holder 18 by each notch 54a, 54b of 53b is released. This state is shown by the dashed line in FIG. 8 or 10 and in FIG. 11(b).

In this state, the cartridge holder 18 is
Due to the biasing forces of levers 6a and 56b, the levers 12a and 12b are rotated around the pivot joints at the center of each lever, and the length up to the vertical end is the radius of rotation, as shown by arrow 64A in FIG. Rotate approximately 90 degrees.

In this case, since the projections 75a and 75b are engaged in the positioning holes 34a and 34b, the disk cartridge 6 is inserted in the insertion direction together with the cartridge holder 18 while being prevented from escaping from the cartridge holder 18. In this state, that is, in a state in which the levers 12a and 12b are held parallel to the disk receiver 27, the levers 12a and 12b descend while drawing a trajectory that is approximately 1/4 of a circular arc with the radius extending from the center to the end of the levers 12a and 12b.

When the cartridge holder 18 is rotated and lowered,
As shown in FIG. 10, one of the lever pieces of the levers 12a and 12b, which is erected upward, is oriented in a horizontal direction that is substantially parallel to the surface of the substrate 2.

Therefore, when the other lever piece of the levers 12a, 12b is rotated, the guide groove 11a in the side frames 10a, 10b, which are erected in front and back of both sides of the injection plate 3,
While moving the guide grooves 11b, press the side walls of the guide grooves 11a and 11b to eject the eject plate 3 together with the side frames 10a and 10b.
move forward.

When the cartridge holder 18 is lowered, the disk 25 housed in the disk cartridge 6 is moved around the outer periphery of the center ball 30 of the disk 25 fixed to the rotating shaft of the spindle motor, as shown for example by the dashed line in FIG. The position of the center ball 30 is supported, and the center ball 30 is brought into a state where it fits into the tapered surface 28 of the disc guide 29.

By inserting the disc cartridge 18, the protrusions 75a and 75b are inserted into the hole 34 of the disc cartridge 18.
a, 34b, and then release the locking by the locking pieces 53a, 53b to fit the disk 25 into the disk guide 29. A disk clamp mechanism is provided that rotatably clamps the disk with a clamping means.

That is, facing the upper side of the disc guide 29, a rectangular plate spring 81 for disc pressing has four locations on roller shafts 82a, 82b, and 82c.

A roller is interposed in each of 82d to form a four-bar link 84a,
It is attached to 84b, 84c, and 84d.

The plate spring 81 has, for example, a cutout-shaped groove (see FIGS. 4 and 5), so that the biasing force acting on the center part in the part where the groove is not formed has an appropriate elastic force. It's Nishide. The plate spring 81 has, for example, three locking holes 85A and 85B in the center thereof.

85C, and as shown in FIG.
A rotatable disk presser 89 is provided via the disk holder 8 to form a disk clamp device 90.

When the disk 25 is not installed, the four-bar links 84a, 84b, 84c, and 84d are connected to the solid lines in FIG.
As shown in the figure or FIG. 2, the link part of the part where the leaf spring 81 is attached is in a horizontal plane parallel to the board 2, extends rearward, and is bent at a right angle at a position rearward from the rear end of the cartridge holder 18. spacers 92.92, rotatable on two parallel roller shafts 91A, 91B installed between both supporting members 57a, 57b erected on the substrate 2;
It is rotatably supported via...

A pair of links 84a and 84b, each end of which is rotatably attached to the left and right sides of the front part of the leaf spring 81 that provides biasing force for disc clamping in the disc clamp mechanism, are L-shaped and bent. The end is a two-wooden roller shaft 9
It is pivotally supported by a front roller shaft 91A in 1A and 91B.

On the other hand, a pair of links 84G and 84d, each end of which is pivotally attached to the left and right sides of the rear portion of the leaf spring 81, are approximately U-shaped and are located in the same horizontal plane as the roller shaft 91A.
The roller i*91B is pivoted at an L-shaped bent portion from the one end at a distance equal to the distance between the front and rear pivot positions in No. 18 bottom opening 24
Slide grooves 94 formed in the side pieces 93a and 93b on both sides of the
Roller shafts 95a and 95b, each other end of which is shaped like an opening, are engaged with a and 94b, with rollers interposed therebetween.

The side pieces 93a and 93b formed on both sides of the opening 24 of the cartridge holder 18 slightly protrude downward from the bottom surface of the cartridge holder 18 and extend in the front-rear direction, and the slide grooves 94a of the side pieces 93a and 93b ,94b
The links 840.84d, each other end of which is engaged, move the cartridge holder 18 downward, that is, the levers 12a, 12.
As the roller b rotates, each other end does not move relative to each other in the slide grooves 94a and 94b, but rotates around the roller shaft 91B.

The distance between the two roller shafts 91A and 91B is the distance between the leaf springs 81 and 91B.
front links 94a, 9
4b and rear links 84C and 84d, the lengths of the arms from the center of rotation to each end are also equal.

Therefore, the blades 12a and 12b are the holding plates 16a.

When the cartridge holder 18 rotates around the pivot point 16b and descends (or ascends) in an approximately 1/4 arc without maintaining a horizontal state, the pair of front and rear links 84a, 84b ; 84c and 84d are configured to rotate clockwise (or counterclockwise) around roller shafts 91A and 91B, respectively.In this case, the front and rear pairs of links 84a and 84b: the arms of 84C and 84d Since the lengths are equal, the same radius of rotation is always maintained, so that the surface of the leaf spring 81 is always held parallel to the surface of the disk receiver 27 and descends (or rises).

This state is shown in FIG.

Here, the solid line indicates that disk cartridge 18 is a rice bag.
In state i of s, 41fllJ links 84a, 84b, 84
c.

84d is parallel to the disk receiver 27, and the front and rear links 84
a, 84b: 84c and 84d are in a horizontally overlapping state, and of course the leaf spring 81 is also in a parallel state with the board 2, and each part of the disc cartridge 6 draws an arc by mounting the disc cartridge L-ridge 6. The front and rear links 84a, 84b; 84c, 8
4d rotates in the FHt direction and enters the state shown by the dashed line. In this state, a pair of front and rear links 84a, 8
4b: One end of each of 84c and 84cl is located at the same distance in the horizontal direction, and the leaf spring 81 is configured to be held parallel to the substrate 2. When descending, the disc presser 89 moves to a position directly above the center hole 30 of the disc 25,
At this time, it contacts the periphery of the center hole 30 in a ring shape,
The disc 25 is rotatably clamped by the biasing force of the leaf spring 81 via the pivoting ball 88 and the holding member 86.

Four-bar links 84a, 84b, 84c having the above configuration.

84d allows the (disk) clamp device 90 to move up and down while maintaining parallelism with the disk receiver 27, so that the clamp device can be securely mounted on the disk receiver 27.

On the other hand, when recording or reproducing is performed with the disc 25 clamped, and then the eject knob 7 is pressed to move the eject plate 3 backward in order to take out the disc cartridge 6, each lever 12a, 12b
The cartridge holder 18 rotates clockwise about its central pivot point, and the cartridge holder 18 rises in a trajectory opposite to that when the loading mechanism is activated, that is, in a circular arc.

Therefore, the pressing pieces 59a, 59b are fixed to the locking pieces 53a, 5.
When it comes into contact with the back side of 3b (Fig. 8 or 1)
0), the tip of the cartridge holder 18 is locked in the notches 54a, 54b of the locking pieces 85a, 53b, and then the regulating rod 67a moves backward together with the eject plate 3. , 67br lever 71a,
The leaf springs 74a, 74b of 71b are pressed counterclockwise, and the protrusions 75a, 75b are retracted upward from the positioning holes 34a, 34b.

At the same time, the disk cartridge 6 inserted into the guide path of the cartridge holder 18 is connected to the coil spring 72 via the wires 45a and 45b inside the disk cartridge 6.
It is designed to be projected toward the opening 20 by the biasing forces of a and 72b.

In this way, the state returns to the state in which the disc cartridge 6 is not installed.

By the way, in a magneto-optical recording/reproducing device, a bias coil 10 for applying a magnetic field is used to ensure reliable recording.
0 (shown in FIG. 13) is attached so that the bias coil 100 can be brought close to the upper surface of the disk 25 when the disk 25 is mounted, similar to the disk clamp mechanism described above.

Tsumari, Section 4 IJ above 84a, 84b, 84c,
Disc clamp device 90 held at the tip of 84d
A bias coil 10 for applying a magnetic field is placed on the rear side adjacent to the
0, for example, the plate bone 101 is attached to the roller shaft 1.
02a, 102b, 102G, 102d are interposed with rollers, and the four points are connected to four-bar links 104a, 104b, 1
04c and 104d.

The leaf spring 101 has a rectangular shape that is elongated in the front and back so that it can cover the recording area in the radial direction of the disk 25 to be loaded, and a pair of links 10 are provided on both the left and right sides of the front and back.
4a, 104b: 104c.

Each end of 104d is pivotally mounted.

Further, the leaf spring 101 is provided with a mouth-shaped groove similar to the leaf spring 81, so that it holds the bias coil 100 and allows fine adjustment of the mounting position in the vertical direction.

The bias coil 100 is attached to one end of the 4
Nodal links 104a, 104b, 104c.

104d has substantially the same structure as the four-bar link for the disk clamp described above. In this embodiment, the front links 104a and 104b are approximately U-shaped, and the rear links 104c and 104d are L-shaped.

That is, the distance between the front and rear pivot positions of the leaf spring 101 is set equal to the distance between the two roller shafts 91A and 918, and the front link 1 whose one end is pivotally connected to the leaf spring 101
04a, 104b are pivoted by roller @91A in the middle and then bent forward and extended, and the other end is connected to the side piece 93.
Side pieces 105a, 105 provided adjacent to a, 93b
Roller shafts 107a and 107b, which are fixed via rollers, are inserted into the slide grooves 106a and 106b of b.

Therefore, the four-bar link 84a for the disk clamp,
Similar to 84b, 84c, and 84d, the front and rear links 104a, 104b are linked to the lifting and lowering of the cartridge holder 18.
: The end portions of 104c and 104d rotate with equal arm length, and the leaf spring 101 or bias coil 100 is vertically raised and lowered with its surface held parallel to the disk 25.

Note that the support members 51a and 51b are also provided with regulating rods 108a and 108b on the inside in the horizontal direction, and when mounted, the lever 7
The protrusions 75a and 75b of 1a and 71b are the positioning holes 34
This is to ensure that the state in which the levers 71a and 34b are engaged is maintained, and when the leaf springs 74a and 74b attached to the levers 71a and 71b come into contact with each other, the leaf springs 74a and
74b is designed to urge the protrusions 75a, 75b in the direction of engagement in the holes 34a, 34b.

According to the embodiment described above, when the disk cartridge 6 is inserted through the insertion opening 23 and pressed until its tip is inserted near the deepest part of the insertion path, the protrusions 75a and 75t protrude into the insertion path. ) is first pressed and rotated, and the protrusion 7
5a and 75b are engaged in the positioning holes 34a and 34b of the disk cartridge 6 and held in the holding state,
The pressing pieces 59a and 59b for releasing the locking means are pressed, and the pressed pressing pieces 59a and 59b release the locking piece 53a.
, 53b are flipped up to release the lock, and the disk cartridge 6 is moved into the cartridge holder 18.
It descends while drawing a trajectory that rotates with it. When descending, the protrusions 75 in the positioning holes 34a, 34b
Holes 34a and 34 on the back side in which holes a and 75b are not inserted
b indicates engagement protrusions 33a, 3 for positioning protruding from the board 2;
3b, and the cartridge holder below the disk cartridge 6 is set and held in a predetermined position on its front end side. On the other hand, the disk 25 is held by a disk guide 29.

When the loading mechanism is activated in this way and the disk 25 and disk cartridge 6 are installed in a predetermined position, the disk cartridge 6 uses the holes 34a and 34b that are used as positioning standards when set to the installed state. Since the cartridge is held in the cartridge holder 18, the mounting position is highly accurate and does not shift, and therefore, the mounting can be performed reliably. Further, there is no need to provide any other hole for insertion in the cartridge. Further, after holding the disk cartridge 6, it is lowered or raised to mount or unmount the disc cartridge 6, so that it can be smoothly mounted or unmounted.

In the first embodiment, the positioning holes 34a, 3
Although two protrusions 75a and 75b that are engaged with the protrusions 4b are used, only one may be used.

Further, the engaging pieces to be inserted into the holes 34a, 34b are not limited to the projections 75a, 75b having the shape shown in the figure, but may be any shape that can be inserted into the holes 34a, 34b.

In the first embodiment, the insertion hole into which the insertion protrusion enters also serves as the positioning reference hole when the cartridge is installed, but a dedicated insertion hole may be provided.

Note that the disk-shaped disk 25 as a recording medium is not limited to a magneto-optical type, but may be of a type that performs recording or reproduction by utilizing a difference in reflectance or transmittance. Further, the present invention can also be applied to a recording medium using a magnetic head.

[Effects of the Invention] As described above, according to the present invention, with the engagement piece provided on the cartridge holder engaged in the positioning hole of the disk cartridge, the cartridge holder is raised and lowered to operate the attachment/detachment mechanism. Therefore, it is possible to reliably attach it to a predetermined position and smoothly remove it from the attached state.

[Brief explanation of the drawing]

Figures 1 to 13 relate to one embodiment of the present invention;
The figure is a perspective view showing the mounting device of one embodiment with the disk clamping means and bias coil portion removed; FIG. 2 is a side view of the mounting device shown in FIG. 1; FIG. is a plan view of FIG. 2, FIG. 5 is a plan view of FIG. 3, FIG. 6 is a perspective view of FIG. 3 with the disk cartridge removed, FIG. 7 is a perspective view of the disk cartridge, and FIG. The figure is a schematic side view showing the locking piece that holds the cartridge holder, Figure 9 is a side view showing the rotating piece to which the pressing piece is attached, and Figure 10 is the vicinity of the locking piece which is the main part of the loading mechanism. a schematic side view showing the part;
FIG. 11 is a schematic side view showing the area around the lever that locks the disk cartridge to the cartridge holder in order to securely mount the disk, and FIG. 12 is the area around the disk clamp means that moves up and down to clamp the disk when the disk is attached or removed. FIG. 13 is a schematic side view showing the vicinity of the four-bar link that holds the bias coil. DESCRIPTION OF SYMBOLS 1... Disk mounting device 2... Board 3... Eject plate 4... Guide groove 6... Disk cartridge 7... Knob 8... Cartridge receiver 10a, 10b-... Side frame 11a , 11b... Guide grooves 12a, 12b, Lz bars 16a, 16b... Holding plate 18... Cartridge holder 21... Cartridge holder body 23... Opening 25... Disc 27
...Disc holder 28...Taber surface 29...
・Disc guide 30...center hole 39a,
39b...Shutter blades 53a, 53b...Locking pieces 54a, 54b...Notches 56a, 56b...Springs 58a, 58b-@fjJ pieces 59a, 59b...Pushing pieces 68. ...Protrusions 71 a, 7l b, li half 4a, 74b...Plate springs 75a, 75b...Protrusions 76a, 76b...Protrusions 81...Plate spring 84a
, 84b, 84c, 84rj - 4-bar link 89...Disk presser 90...Disc clamp device 93a, 93b-...Side pieces 94a, 94b...Slide full 100...Bias coil 101...Plate spring 10
4a, 104b, 104c, 104d...4-section link

Claims (1)

[Claims] In a mounting device that allows a disc-shaped recording medium stored in a cartridge to be removably mounted, an engaging piece is provided in a cartridge holder that allows the cartridge to be stored,
A recording medium mounting device characterized in that a recording medium attachment/detachment mechanism is formed by raising and lowering a cartridge holder in a state in which the engagement piece is engaged in an engagement hole provided in the cartridge.