JPH0736247B2 - Disk player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in the following order.

A Industrial Field B Outline of the Invention C Conventional Technology D Problems to be Solved by the Invention E Means for Solving Problems F Operation G Example G-1 Structure of Main Part and Disk Cartridge (No. 1) 1
(Fig. 2) G-2 Mechanism (Figs. 3 and 4) provided on the movable chassis
(Figs., 5) G-3 Movable chassis lifting drive mechanism (Figs. 4, 5) G-4 Disc drawer mounting operation (Figs. 4, 5, 6, 7) G-5 Disc storing operation (Fig. 7) G-6 Operation effect G-7 Modification H Effect of the invention A Industrial field of use The present invention relates to a disc cartridge that accommodates a disc tray on which a disc is mounted. The present invention relates to a disc player in which a disc tray is pulled out from a cartridge and a disc placed on the disc tray is mounted in a disc mounting portion.

B Outline of the Invention The present invention is provided with a disc cartridge that accommodates a disc tray on which a disc is mounted, and through a disc tray pulled out from the disc cartridge,
In a disc player adapted to supply a disc to a disc mounting portion, a tray pull-out mechanism for pulling out a disc tray on which a disc is placed from a disc cartridge, a first guide portion for guiding the tray pull-out mechanism, and a disc cartridge A second guide portion for guiding the disc tray pulled out from the
In addition, a tray horizontal position restricting portion for restricting the disc tray pulled out from the disc cartridge to a horizontal position where a part of the disc placed on the disc tray remains in the disc cartridge is provided and pulled out from the disc cartridge. The disc mounted on the disc tray is installed in the disc mounting part to securely pull out the disc tray from the disc cartridge and regulate the position for mounting the disc in the disc mounting part. In addition, it is possible to reduce the overall size of the disc tray in the pull-out direction from the disc cartridge.

C Conventional technology Discs on which information signals are recorded, such as digital discs
In a disc player that reproduces an information signal from an audio disc, a disc cartridge in which a plurality of disc trays, on which discs are respectively placed, are mounted, is detachably mounted. It has been proposed to provide a disc changer mechanism for selectively feeding a disc from a cartridge to a disc mounting portion.

In a disc player provided with such a disc changer mechanism, a tray drawer mechanism that forms a part of the disc changer mechanism and is linearly movable between the cartridge mounting portion where the disc cartridge is mounted and the disc mounting portion is provided. , The disc tray from the disc cartridge is pulled out toward the disc mounting portion side so that the entire disc placed on the disc tray is located outside the disc cartridge, and the disc tray is placed on the disc tray placed in the pulling position. The placed disc is moved up and mounted on the disc mounting portion so that the reading means reads the information signal from the disc.

D Problem to be Solved by the Invention However, in the case of a disc player having the disc changer mechanism as described above, the disc housed in the disc cartridge may be entirely ejected to the outside of the disc cartridge. After the disc tray on which the disc is placed is pulled out by the tray pull-out mechanism, the disc is loaded into the disc loading portion, so that the operation space of the tray pull-out mechanism becomes large, and the disc tray pull-out direction in the entire disc player is increased. The size, for example, the depth size is increased, and the disc player is increased in size.

In view of such a point, the present invention relates to mounting a selected one of the plurality of disc trays accommodated in the disc cartridge mounted in the cartridge mounting portion to the disc mounting portion. Can be carried out from the disc cartridge without pulling out the disc tray from the disc cartridge until the entire disc placed on the disc cartridge appears outside the disc cartridge. An object of the present invention is to provide a disc player which is reduced in number and in which the disc tray can be reliably pulled out and stored in the disc cartridge.

E Means for Solving the Problems In order to achieve the above-mentioned object, the disc player according to the present invention comprises a cartridge mounting portion to which a disc cartridge for accommodating a plurality of disc trays on which discs are mounted is mounted, A notch provided at a corner of the tray and a single engaging means for engaging the notch to pull out a disc tray on which a desired disc is mounted from a disc cartridge mounted at a cartridge mounting portion are provided. And a first guide portion for guiding the tray pull-out mechanism, a second guide portion for guiding the disc tray pulled out from the disc cartridge, and a notch in the engaging means. When the disk tray pulled out from the disk cartridge comes into contact with the disk tray, it is placed on the disk tray. The tray horizontal position regulating part that regulates a part of the disc that remains in the disc cartridge in the horizontal direction and the disc mounted on the disc tray that is regulated by the tray horizontal position regulating part are mounted. And a supporting member on which a reading unit for reading an information signal from the disc mounted on the disc mounting unit is installed, and a tray pull-out mechanism, a first guide unit, a second guide unit, Each of the tray horizontal position restricting portion and the supporting member is attached to a movable chassis that moves up and down with respect to the cartridge mounting portion. Then, in a state where the engaging means engages with the cutout portion and the disc tray is pulled out from the disc cartridge, the disc tray contacts the tray horizontal direction position regulating portion while the engaging means engages with the cutout portion, and the disc tray moves in the horizontal direction. Is held, the tray drawer mechanism is guided and held by the first guide portion, and the disc tray is guided by the second guide portion, and the vertical position is held.

F Operation In the disc player according to the present invention as described above, the disc cartridge is mounted in the cartridge mounting portion, the disc mounted on the disc tray in the disc cartridge is mounted in the disc mounting portion, and the information is transmitted from the disc. When the signal is read, the movable chassis moves up and down with respect to the cartridge mounting portion, and causes the tray pullout mechanism to take a position where the disc tray housed in the disc cartridge can be pulled out. The tray pull-out mechanism, at such a position, engages the engaging means provided on the tray pull-out rotation arm with the notch provided on the disc tray on which the desired disc in the disc cartridge is placed, The first guide portion, the second guide portion, and the tray horizontal position restricting portion, which are operated to pull out the disc tray from the disc cartridge, are attached to the movable chassis. It guides the disc tray pulled out from the disc tray and regulates the horizontal position of the disc tray pulled out from the disc cartridge and abutting against the disc tray so that a part of the disc placed on the disc tray remains in the disc cartridge. Then, the disc mounting portion installed on the support member attached to the movable chassis engages with the disc placed on the disc tray under the position regulation by the tray horizontal direction regulation unit, and It is mounted on the disc mounting part. Then, the reading means reads the information signal from the disc mounted on the disc mounting portion.

Thus, in the disc player according to the present invention,
Since the disc is mounted in the disc mounting portion with a part of the disc remaining in the disc cartridge and is used for the reading operation of the information signal by the reading means, the disc tray is pulled out from the disc cartridge by the tray pull-out mechanism. In this case, the size in the pull-out direction is reduced and the overall size is reduced, and the disc tray can be pulled out and stored in the disc cartridge, that is, the disc can be securely mounted in the disc mounting portion and the disc cartridge. become.

G Example G-1 Configuration of essential parts and disk cartridge (first
(FIG., FIG. 2) FIG. 1 shows an essential part of an example of a disc player according to the present invention.

In this example, the cartridge mounting portion 30 is fixed to the fixed chassis 10 via the mounting portion 11, and the cartridge mounting portion 30 has a mounting base 31 and cartridge guide portions 32 provided on both sides thereof. Is formed.

As the disc cartridge mounted in the cartridge mounting portion 30, for example, a disc cartridge as shown in FIG. 2 is used. The disc cartridge 20 shown in FIG. 2 has a casing 21, an opening 22 is provided on one side of the casing 21, and the casing 21 is rotatable. A plurality of disc trays 23 that are axially mounted and on which discs D are placed are accommodated in parallel in a stacked state. A metal piece 24 is attached to each disc tray 23, and each disc tray 23
When the metal pieces 24 are stored in the box 21, each metal piece 24
By being magnetically attracted to the plate-shaped magnet 25 fixed to the inner surface of the side wall of 21, the position is regulated to the storage position. Further, each of the disc trays 23 has a notch 26 at a corner thereof which engages with the tray pulling-out mechanism when being pulled out from the disc cartridge 20 as shown by being rotated by a tray pulling-out mechanism which will be described later. Are formed. Furthermore, the disc D in each disc tray 23
The flat surface portion on which is mounted is generally in a V shape.

In addition, the motor 14 is attached to the fixed chassis 10,
Further, three feed screw members 16 are erected, and each of the feed screw members 16 has a worm gear 14a attached to the shaft of the motor 14, a transmission gear 17, and other gears to be described later. The rotation of is transmitted.

These 3 are rotated by the rotation of the motor 14 being transmitted.
A movable chassis 40 is screwed into each of the feed screw members 16 of the book with a female screw portion 18. As a result, the movable chassis 40 is driven up and down with respect to the cartridge mounting portion 30 by the rotation of the three feed screw members 16. That is, the motor 14,
Worm gear 14a, transmission gear 17, and three feed screw members 16
Forms an elevating drive mechanism for the movable chassis 40 together with other gears described later. Then, in order to control the position of the movable chassis 40 in the ascending / descending movement direction, the position of each disk tray 23 housed in the fixed chassis 10 when the disk cartridge 20 is mounted in the cartridge mounting portion 30 and below The scale plate 13 having the slit 13a formed in relation to the position of the scale plate 13 is provided, and the movable chassis 40 detects the slit 13a formed in the scale plate 13, for example, an optical slit sensor 41 is provided. Has been.

In the movable chassis 40, the disc D selected from the disc cartridges 20 mounted in the cartridge mounting portion 30 is selected.
Guides the tray drawer mechanism 50 equipped with a tray drawer arm 53 for pulling out the disk tray 23 on which the tray is mounted, and the tray drawer arm 53 of the tray drawer mechanism 50 that moves to pull out the disk tray 23 from the disk cartridge 20. A tray that forms a tray position restricting means for the disc tray 23 that is pulled out by the pulling-out mechanism 50 so as to set a tray pull-out position in which a part of the disc D placed on the disc tray 23 remains in the disc cartridge 20. A disc mounting portion provided with a position regulating mechanism 60 and a supporting plate member 70 provided with a disc mounting portion 75 and an optical reading means 76, which will be described later, and the supporting plate member 70 facing the supporting plate member 70. Clamp arm 80 for clamping the disc D mounted on the part 75
And are attached.

G-2 Mechanism provided on movable chassis (Figs. 3 and 4)
(Fig. 5, Fig. 5) The tray drawer mechanism 50 has a gear 51
And 52 and a tray drawer arm 53.

The gear 51 is rotatably attached to the movable chassis 40,
It meshes with a worm gear 43 included in a rotation shaft of a motor 42 fixed to a rising portion 40a of a movable chassis 40 on the cartridge mounting portion 30 side. The small-diameter gear 51a of the gear 51 meshes with the gear 52, and the driving force of the motor 42 is transmitted to the gear 52 via the worm gear 43 and the gear 51. The shaft of the gear 52 is fitted with a shaft formed at the end of the connecting portion 54 of the tray pull-out arm 53, and one end of the gear 52 is provided between the gear 52 and the connecting portion 54 so as to project from the gear 52. The tray pull-out arm 53 is provided with a spring 55 that is locked by the locked pin 52a and the other end of which is locked by the locking pin 54a protruding from the connecting portion 54.
The spring is biased by a spring 55 so as to rotate with the rotation of the gear 52.

Each of the disc trays 23 accommodated in the above-mentioned disc cartridge 20 is provided at the tip of the main body of the tray withdrawing arm 53 formed in an L shape extending from the end of the connecting portion 54 substantially parallel to the movable chassis 40. A protruding engagement piece 56 for engaging with the notch portion 26 is provided, and a guide roller 57 is attached to a portion of the tip of the main body of the tray drawer arm 53 that hangs toward the movable chassis 40. Has been. The guide roller 57 is fitted in the lower guide groove portion 61 of the tray position restricting mechanism 60 attached to the movable chassis 40, and the tray pull-out arm 53 is guided by the lower guide groove portion 61, and the gear 52. It is designed to rotate about the axis.

The tray position regulation mechanism 60 extends in an arc in parallel with the movable chassis 40, and extends inside the lower guide groove portion.
61 is provided. Further, an upper guide groove portion 62 parallel to the lower guide groove portion 61 is formed on an upper portion of the lower guide groove portion 61, and the upper guide groove portion 62 is formed by the tray pull-out arm 53.
Thus, the disk tray 23 pulled out from the disk cartridge 20 is engaged with the peripheral portion of the disk tray 23 to support the drawn disk tray 23. Further, the drawn-out disc tray 23 is brought into contact with the upper guide groove portion 62, so that a part of the disc D placed on the disc tray 23 remains in the disc cartridge 20. In order to achieve this, a horizontal position restricting portion 62a that restricts the position of the disc tray 23 in the horizontal direction is provided.

Gear with which the shaft of the connecting portion 54 of the tray pullout arm 53 is fitted
52 includes a gear 58 pivotally mounted on the movable chassis 40.
Are in mesh. A cam groove 59 is formed in the cylindrical portion of the gear 58, and a pin 71 attached to the bent portion of the support plate member 70 is engaged with the cam groove 59.

The support plate member 70 has leg portions 73 each having a long hole 73a formed at both ends thereof, and the leg portions 73 are pivotally attached to a fulcrum plate 45 attached to the movable chassis 40 by a shaft 74. As shown in FIGS. 3, 4, and 5, the support plate member 70 is provided with a disk mounting portion 75 which is rotationally driven by a spindle motor 90, and is mounted on the disk mounting portion 75. The optical reading means 76 for reading an information signal from the disc D that is rotated by means of
By the two guide shaft members 77 attached to the lower surface side of
The support plate member 70 is supported and installed so as to be movable in the cutout hole 70a formed in the support plate member 70.

A clamp arm 80 is arranged above the support plate member 70, and the clamp arm 80 has leg portions 82 provided with connecting pins 83 at both ends thereof, and the leg portions 82 are movable. A fulcrum plate 45 attached to the chassis 40 is pivotally attached by a shaft 84. Then, the connecting pin 83 provided on the leg portion 82 is inserted into the long hole 73a formed in the leg portion 73 of the support plate member 70, and the clamp arm 80 rotates about the shaft 74 of the support plate member 70 as a fulcrum. It is adapted to rotate about a shaft 84 as a fulcrum in conjunction with the movement. At the tip of the clamp arm 80, a magnet type clamp member facing the disc mounting portion 75 is provided.
85 is provided. The clamp member 85 is normally located above and apart from the disc mounting portion 75, as shown in FIGS. 4 and 5.

G-3 Movable Chassis Lifting Drive Mechanism (FIGS. 4 and 5) As described above, the tray pull-out mechanism 50 including the tray pull-out arm 53, the tray position regulation mechanism 60, the support plate member 70, and the clamp arm 80 are respectively provided. The movable chassis 40 thus arranged can be moved up and down with respect to the cartridge mounting portion 30. Next, a lifting drive mechanism for moving the movable chassis 40 up and down will be described.

As shown in FIG. 4 and FIG. 5, a large-diameter center gear 15 is axially mounted on the fixed chassis 10 below the movable chassis 40. The center gear 15 has three feed screw members 16 described above. It meshes with a drive gear 16a provided below each movable chassis 40. The drive gear 16a of the feed screw member 16 adjacent to the motor 14 attached to the fixed chassis 10 is a worm gear in which the drive gear 16a axially mounted on the fixed chassis 10 and the transmission gear 17 mesh with the transmission gear 17.
It is adapted to be rotationally driven by the motor 14 via 14a, whereby the feed screw members 16 are simultaneously rotationally driven by the motor 14.

An elevation drive mechanism is formed by the motor 14, the worm gear 14a, the transmission gear 17, the center gear 15, and the three feed screw members 16, and each feed screw member 16 has the same structure as described above.
The female screw portion 18 provided on the movable chassis 40 is screwed. Therefore, when each feed screw member 16 is rotationally driven by the motor 14, the movable chassis 40 moves up and down with respect to the cartridge mounting portion 30 along the three feed screw members 16. When the movable chassis 40 is moved up and down, the slit sensor 41 attached to the movable chassis 40 detects each slit 13a formed in the scale plate 13, and the movable chassis 40 moves up and down based on the detection output. Is regulated.

G-4 Disc drawer mounting operation (FIG. 4, FIG. 5, FIG. 6, FIG. 7) With such a configuration, the disc cartridge 20 as shown in FIG. As shown in FIG. 5, information reproduction from selected ones of the discs D mounted on the cartridge mounting portion 30 and respectively mounted on the disc trays 23 stored in the disc cartridge 20 in a stacked state can be performed. In doing so, for example, a movable chassis
As shown in FIGS. 4 and 5, 40 is placed in the standby position close to the fixed chassis 10, the disc D to be used for information reproduction is designated, and the motor 14 is started. As a result, the elevating and lowering drive mechanism is activated, whereby the movable chassis 40 rises from the standby position, and under the control based on the detection output of the slit sensor 41, as shown in FIG. The protruding engagement piece 56 of the ascending tray pull-out arm 53 has the cutout portion of the disc tray 23 housed in the uppermost stage in the disc cartridge 20.
It is stopped at the position where it engages with 26.

Then, in this state, the motor 14 is stopped and the motor 42 is started, and the start of the motor 42 causes the worm gear 43 and the gear 51 to rotate as shown in FIG.
The gear 52 is rotated in the direction indicated by the arrow a via. As a result, the tray pullout arm 53 has its protruding engagement piece 56 engaged with the cutout portion 26 of the disc tray 23, and its guide roller 57 fitted into the lower guide groove portion 61 of the tray position regulation mechanism 60. It is rotated in this state, and is guided by the lower guide groove portion 61 of the tray position restricting mechanism 60 from the position shown by the dashed line in FIG. 7 to the position shown by the solid line. Along with that, the disc tray 23 on which the selected disc D is placed is rotated, and from the storage position in the disc cartridge 20 as shown by the alternate long and short dash line in FIG. Guided by the upper guide groove 62, it is pulled out of the disk cartridge 20 and hits the horizontal position restricting portion 62a provided in the upper guide groove 62 of the tray position restricting mechanism 60, as shown by the solid line in FIG. By contacting, it is moved to the tray pull-out position where the position is regulated in the horizontal direction. As described above, in the state in which the disc tray 23 is pulled out to the tray pull-out position by the tray pull-out arm 53, the center portion of the disc D placed on the disc tray 23 is located outside the disc cartridge 20. A part of the disk cartridge 20 remains.

At this time, in the tray pull-out arm 53, the disc tray 23 pulled out thereby is regulated to the tray pull-out position by the horizontal position regulating portion 62a provided in the upper guide groove portion 62 of the tray position regulating mechanism 60. Although the protruding engagement piece 56 is stopped in a state of engaging with the notch portion 26 of the disc tray 23 placed in the tray pull-out position,
52 is further rotated in the direction indicated by the arrow a in FIG. 7 against the biasing force of the spring 55. Therefore, with the pin 71 fixed to the bent portion of the support plate member 70 fitted in the cam groove 59, the gear 58 in which the cam groove 59 is formed rotates in the direction indicated by the arrow b in FIG. As a result, the support plate member 70 is rotated about the shaft 74 as a supporting shaft to move up, and the lower surface side of the disk D placed on the disk tray 23 placed in the tray pull-out position. The disc mounting portion 75 is engaged with the disc D so that the disc D is slightly raised from the disc tray 23 so that the portion remaining in the disc cartridge 20 does not come into contact with any portion in the disc tray 23. , Disk D
Are placed on the disc mounting portion 75. Also, at this time,
The clamp arm 80 is linked with the rotation of the support plate member 70.
It is rotated about 84 as a spindle and descends, and comes into contact with the disc D mounted on the disc mounting portion 75 from its upper surface side,
The disk D is clamped by being held by the disk mounting portion 75. In this case, the clamp member 85 and the disk mounting portion 75 are magnetically engaged with each other. Then, after that, the motor 42 is stopped.

In this way, the selected disc D is mounted in the disc mounting portion 75 with a part thereof remaining in the disc cartridge 20, and the disc D mounted in the disc mounting portion 75 is the spindle motor 90. The optical reading means 76 disposed on the support plate member 70 is rotated by
An information signal is read from the disc D by moving the disc D in the radial direction of the disc D along the two guide shaft members 77 within the range of the cutout hole 70a provided in the support plate member 70.

G-5 Disc Storage Operation (FIG. 7) Next, after the reading of the information signal from the disc D by the optical reading means 76 is completed, the motor 42 is rotated in the reverse direction from the disc loading operation. This allows the worm gear
A gear 58 having a cam groove 59 into which a pin 71 fixed to the bent portion of the support plate member 70 is fitted via 43 and the gears 51 and 52.
Is rotated in the direction opposite to the direction indicated by the arrow b in FIG. 7, whereby the support plate member 70 descends and, in conjunction with this, the clamp arm 80 rises. As a result, the disc D is detached from the disc mounting portion 75 and is again placed on the disc tray 23 placed at the tray pull-out position.

Then, the gear 52 is rotated in the direction opposite to the direction indicated by the arrow a in FIG. 7, whereby the tray pull-out arm 53 and the protruding engagement piece 56 of the tray pull-out arm 53 are rotated.
Is engaged with the notch 26 and the guide roller 57 thereof is rotated in a state of being fitted in the lower guide groove portion 61 of the tray position regulating mechanism 60, from the position shown by the solid line in FIG. The lower guide groove portion of the tray position regulating mechanism 60 is moved toward the position indicated by the alternate long and short dash line, that is, toward the disc cartridge 20.
We are guided by 61 and move. Along with that, the disc tray 23 on which the disc D is placed is rotated to move the disc tray 23 from the tray pull-out position shown by the solid line in FIG.
The disc cartridge 20 is accommodated in the disc cartridge 20 as guided by the upper guide groove portion 62 of the tray position regulation mechanism 60 to the accommodating position in the disc cartridge 20 as indicated by the one-dot chain line in the figure.

After that, the motor 42 is stopped and the motor
14 is started, the elevating drive mechanism is activated, the movable chassis 40 is lowered, and the disc tray 23 on which the selected disc D is placed is pulled out from the disc cartridge 20. It is stopped at a position or a standby position near the fixed chassis 10.

It should be noted that, even when the disc D placed on the disc tray 23 accommodated at a position other than the uppermost stage in the disc cartridge 20 is mounted on the disc mounting portion 75 and an information signal is read therefrom, The same operation as is performed.

G-6 Operation and Effect In this way, in the above example, the disc tray 23 pulled out from the disc cartridge 20 by the tray pull-out arm 53 is horizontally moved by the horizontal position regulating portion 62a formed in the tray position regulating mechanism 60. The position of the disc D mounted on the disc tray 23.
The disk D can be mounted in the disk mounting portion 75 by setting the tray withdrawing position where a part of the disk remains in the disk cartridge 20. Therefore, the dimension of the disk tray 23 in the withdrawing direction can be reduced. Also,
The motor 14 can operate an up-and-down drive mechanism including three feed screw members 16 to move the movable chassis 40 up and down with respect to the cartridge mounting portion 30. Further, the tray pull-out arm installed on the movable chassis 40 can be operated. Tray drawer mechanism 50 equipped with 53, disk mounting part 75 and optical reading means 7
Since each of the support plate member 70 and the clamp arm 80 on which 6 and 6 are installed can be operated by the motor 42, the configuration is simplified as compared with the case where they are operated by separate motors. be able to.

G-7 Modification In the above-described example, the support plate member 70 and the clamp arm 80 are interlocked with each other and are brought close to each other, so that the support plate member 70
The disc D is mounted on the disc mounting portion 75 installed in the disc. However, in the disc player according to the present invention, such a configuration is not necessarily required, and the clamp arm is fixed. The support plate member on which the disc mounting portion is installed may move so as to approach the clamp arm so that the disc is mounted on the disc mounting portion. However, in such a case, when the disc is mounted in the disc mounting portion, the floating distance of the disc from the disc tray increases, so that the distance between the disc trays mounted in the disc cartridge becomes large. It will be.

H Effect of the Invention As is clear from the above description, in the disc player according to the present invention, the disc cartridge accommodating the disc tray on which the disc is mounted is mounted in the cartridge mounting portion, and the disc tray in the disc cartridge is mounted. When the information signal is read from the mounted disc, the mounting of the disc mounted on the disc tray to the disc mounting portion is performed by moving the disc tray from the disc cartridge to the entire disc mounted on the disc cartridge. Instead of pulling it out until it appears outside, the disc tray can be moved to the tray pull-out position where a part of the disc placed on the disc tray remains in the disc cartridge. Also,
It is possible to hold the position of the disc tray in the tray pull-out position in the horizontal direction and the vertical direction, and guide and hold the tray pull-out mechanism by the first guide portion. Therefore, in the disc player according to the present invention, the size of the disc tray in the direction of pulling out the disc tray from the disc cartridge can be reduced, and the overall size can be reduced. Storing in the cartridge is surely performed.

[Brief description of drawings]

1 is a perspective view showing an essential part of an example of a disc player according to the present invention, FIG. 2 is a perspective view showing an example of a disc cartridge mounted and used in the example shown in FIG. 1, and FIG. 1 is a perspective view showing a mechanism arranged on a movable chassis in the example of FIG. 1, FIG. 4 is a front view of the example shown in FIG. 1, and FIG. 5 is a side view of the example shown in FIG. 6 and 7 are a side view and a plan view for explaining the operation of the example shown in FIG. In the figure, 10 is a fixed chassis, 20 is a disk cartridge,
23 is a disc tray, 26 is a cutout portion, 30 is a cartridge mounting portion, 40 is a movable chassis, 50 is a tray drawer mechanism, 53 is a tray drawer arm, 56 is a protruding engagement piece, 57 is a guide roller, and 60 is a tray position restriction. Reference numeral 61 is a lower guide groove portion, 62 is an upper guide groove portion, 62a is a horizontal position regulating portion, 70 is a support plate member, 75 is a disk mounting portion, and 76 is an optical reading means.

Claims (1)

[Claims] 1. A cartridge mounting portion for mounting a disc cartridge accommodating a plurality of disc trays on which discs are mounted, a notch provided in a corner of the disc tray, and a mounting portion mounted on the cartridge mounting portion. And a tray pull-out mechanism having a tray pull-out rotation arm provided with a single engaging means for engaging with the notch so as to pull out the disc tray on which a desired disc is placed from the disc cartridge, A first guide portion that guides the tray pull-out mechanism, a second guide portion that guides the disc tray pulled out from the disc cartridge, and the engaging means engages with the notch and pulls out from the disc cartridge. As a result of the abutted disc tray, a part of the disc placed on the disc tray is partially removed. A tray horizontal position restricting part for restricting the horizontal position that will remain in the disc cartridge, and a disc mounted for mounting a disc placed on the disc tray position-regulated by the tray horizontal position regulating part. Member and a supporting member on which a reading means for reading an information signal from the disc mounted on the disc mounting portion is installed, the tray drawer mechanism, the first guide portion, the second guide portion, and the tray horizontal position. Each of the restricting portion and the supporting member is attached, and a movable chassis that moves up and down with respect to the cartridge mounting portion is provided, and the engaging means engages with the cutout portion so that the disc tray is pulled out from the disc cartridge. In this state, the disc tray is regulated in its horizontal position while the engaging means is still engaged with the notch. The tray withdrawing mechanism is guided and held by the first guide portion, and the disc tray is guided by the second guide portion to hold the position in the vertical direction. A disc player characterized in that