JPH0616337B2 - Disk player - Google Patents

Description

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

A Field of Industrial Use B Outline of 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, FIG. 3, FIG. 4) G-2 Disc cartridge and disc loading / unloading operation (FIG. 3, 4) H Effect of the invention A Industrial field of application The present invention incorporates a disc. The present invention relates to a disc player in which the disc cartridge is mounted and which records or reproduces information by using the built-in disc.

B Outline of the Invention The present invention is a disc player in which a disc cartridge is mounted, which has a disc therein and an opening for exposing the contained disc to the outside, and a movable lid for closing or opening the aperture. In the above, the disc cartridge is inserted and mounted in the cartridge mounting portion provided in the main chassis member, and when the disc cartridge is inserted in the cartridge mounting portion, it is possible to move up and down with respect to the main chassis member. An opening / closing arm mechanism, which is rotatably supported by the sub chassis member and is guided by a guide portion provided on the main chassis member, engages with and is inserted into the disc cartridge inserted in the cartridge mounting portion. The disc cartridge is rotated until it reaches the first insertion position. An opening in the movable lid of the cartridge to assume a position to the open state, further, the in inserted disk cartridge is the cartridge mounting portion from a first insertion position 2
When moving to the insertion position of, move with the sub chassis member in the direction along the insertion direction of the disk cartridge,
By allowing the disc built in the inserted disc cartridge to be mounted in the disc mounting part installed in the sub chassis member, the disc cartridge can be mounted in the cartridge mounting part based on a relatively simple structure. Just by inserting, first, the movable lid of the disc cartridge is controlled to open the opening, and then the disc facing the outside from the opening is securely attached to the disc mounting part. It is something that can be done.

C Conventional Technology A disk as a disk-shaped recording medium is supposed to have a through hole, that is, a central hole provided in the central portion thereof, and directly engages with the disk mounting portion of the disk player at the central hole portion. The information recording device is mounted on the recording medium and is used for recording or reproducing information. When such a disc is not used, the whole of the disc is protected to prevent information from being recorded, the recording surface on which the information is recorded from being damaged, or being contaminated with dust. Often stored in a case. However, such a disc stored in the protective case when not in use is troublesome in that it must be taken out of the protective case and mounted in the disc mounting portion of the disc player each time it is used.

Therefore, when the disc is not used, the disc is entirely housed in order to protect the recording surface from damage or stains due to dust, and even when the disc is used, the disc is mounted in a disc player with a built-in disc. It is conceivable to use a disc cartridge that allows the disc to be mounted in the disc mounting portion.
In such a case, in the disc cartridge containing the disc, an opening corresponding to the central hole portion of the disc which is required when the built-in disc is mounted in the disc mounting portion, and the disc mounting portion are mounted. An opening is provided for recording information on the recording surface of the disc, or for exposing a part of the recording surface of the disc to the outside along the radial direction of the disc, which is necessary for reproducing information from the recording surface. Have to be done. Such an opening is formed in a relatively large size when it is formed separately or when both are integrated and extend from the position corresponding to the central hole portion of the disk to the position corresponding to the outer peripheral edge of the recording surface. It may be formed as a hole, but in any case, it is inconvenient from the viewpoint of protection from damage to the recording surface of the disc when it is not used or from stains due to dust and dust. In use, a lid will be provided to allow closing of such openings. That is, the disc cartridge containing the disc has an opening for exposing the built-in disc to the outside and a movable lid for closing or opening the opening.

On the other hand, in a disc player in which a disc cartridge having such a disc built therein and having an opening and a movable lid is mounted, in order to expose the disc contained in the mounted disc cartridge to the outside from the opening. A lid opening / closing mechanism for automatically performing an operation for causing the movable lid of the cartridge to take a position for opening the opening is provided according to the mounting of the disk cartridge. When the disc cartridge is mounted on the disc player,
The movable lid of the disc cartridge is moved by the lid opening / closing mechanism to open the opening, and then the disc built in the disc cartridge is mounted in the disc mounting part through the opening, and information recording / reproduction is performed. Recording of information on the disc or reproduction of information from the disc by means of the means is performed through the opening.

D Problem to be Solved by the Invention However, in a disc player in which such a disc is built-in and a disc cartridge having an opening and a movable lid is mounted, the lid opening / closing mechanism is installed as described above. Furthermore, after the movable lid of the disc cartridge is moved by the lid opening / closing mechanism to open the opening, the disc built in the disc cartridge is mounted on the disc mounting portion through the opening. A disk mounting drive mechanism that operates will be installed, and its configuration will be extremely complicated, and the operations of the lid opening / closing mechanism and the disk mounting drive mechanism will also be complicated, and malfunctions are likely to occur. There is a risk. Further, there is a possibility that complicated adjustment is required regarding the operation timing between the lid opening / closing mechanism and the disc mounting drive mechanism.

In view of such a point, the present invention is to be mounted with a disc cartridge having a disc therein and having an opening portion for exposing the disc to the outside and a movable lid body for closing or opening the opening portion. And with a relatively simple structure, and with a relatively simple operation,
As the disk cartridge is installed, first,
An object of the present invention is to provide a disc player that can surely perform an operation of controlling a movable lid of a disc cartridge to open an opening and then mounting the disc cartridge in a disc mounting portion facing the outside from the opening.

E Means for Solving the Problems In order to achieve the above-mentioned object, a disc player according to the present invention has a disc cartridge which has a disc therein and has an opening for exposing the disc to the outside and a movable lid for the opening. A main chassis member having a cartridge mounting portion for inserting and mounting, and a sub chassis member in which the disc mounting portion is installed and is moved up and down with respect to the main chassis member as the disc cartridge is inserted into the cartridge mounting portion, It is rotatably supported by the sub chassis member and is guided by a guide portion provided on the main chassis member, and controls the movable lid of the disk cartridge inserted in the cartridge mounting portion to open the opening. It is configured by including an opening / closing arm mechanism for setting the state.
The opening / closing arm mechanism engages with the disc cartridge inserted into the cartridge mounting portion, and is rotated and inserted until the inserted disc cartridge reaches the first insertion position in the cartridge mounting portion. When the movable lid of the cartridge is moved to a position where the opening is opened and the inserted disc cartridge is further moved from the first insertion position to the second insertion position in the cartridge mounting portion, it is inserted. When the inserted disc cartridge moves in the direction along the insertion direction of the disc cartridge together with the sub chassis member, and the inserted disc cartridge takes the second insertion position, the disc mounted in the disc cartridge is mounted on the disc mounting portion. Allowed.

F operation As described above, in the disc player according to the present invention,
The disk cartridge is inserted into the cartridge mounting portion with its movable lid body at a position where the opening is closed. When the disc cartridge is thus inserted into the cartridge mounting portion, the opening / closing arm mechanism engages with the disc cartridge before the disc cartridge reaches the first insertion position. In such a state until the disc cartridge is continuously inserted and reaches the first insertion position, the disc cartridge does not engage with the sub chassis member, so that the sub chassis member is kept stationary and the open / close arm mechanism is opened. Rotates under the guidance of the guide portion provided on the main chassis member in response to the insertion of the disc cartridge, thereby moving the movable lid of the disc cartridge to set the opening to the open position. .

Then, in a state where the disc cartridge is further inserted from the first insertion position to the second insertion position, the disc cartridge abuts against a part of the sub chassis member and presses the sub chassis member in the insertion direction, Accordingly, the sub chassis member moves in the disc cartridge insertion direction while moving upward with respect to the main chassis member. For this reason, the opening / closing arm mechanism keeps the movable lid of the disk cartridge in the position where the opening is in the open state, and the insertion direction of the disk cartridge is guided by the guide provided on the main chassis member. Move in the direction along. Then, when the disc cartridge reaches the second insertion position, the disc contained therein is mounted through the opening of the disc cartridge to the disc mounting portion that has moved upward along with the sub-chassis member, and the disc cartridge is in the second position. The sub chassis member stops at the insertion position and is fixed to the cartridge mounting portion, and the sub chassis member also stops moving.

As described above, in the disc player according to the present invention, only by inserting the disc cartridge into the cartridge mounting portion, first, the movable lid of the disc cartridge is controlled to open the opening, and thereafter, the opening is opened. The operation of mounting the disc facing the outside from the section to the disc mounting section is surely performed, and moreover, such a reliable operation is performed when the main chassis member having the cartridge mounting section and the disc cartridge is inserted into the cartridge mounting section. Along with the sub chassis member that performs simple movement with respect to the main chassis member,
It can be obtained with a relatively simple configuration including an opening / closing arm mechanism that is rotatably supported by the sub chassis member and that performs simple rotation and linear movement when the disc cartridge is inserted into the cartridge mounting portion.

G Embodiment G-1 Construction of essential parts and disk cartridge (FIGS. 1, 2, 3, and 4) FIG. 1 is an exploded view of the essential parts of an example of a disk player according to the present invention. Show.

In this example, a fixed chassis 10 which is a main chassis member,
A movable chassis 40 as a sub chassis member movably supported by the fixed chassis 10 is provided. Further, the fixed chassis 10 is provided with a cartridge mounting portion 20, and the cartridge mounting portion 20 is attached to the opposite side edge portion of the fixed chassis 10 that sandwiches the cutout hole 10 a formed in the fixed chassis 10. It is formed with a pair of cartridge guide portions 21a and 21b.

A disk cartridge containing a disk is mounted in the cartridge mounting portion 20, and as such a disk cartridge, for example, one as shown in FIG. 2 is used. The disc cartridge 30 shown in FIG. 2 has a box 31 in which a disc D is housed. The bottom plate 31a of the box 31 is provided with an opening 32 extending in the radial direction from a position corresponding to the central hole D'of the housed disc D and its peripheral portion to a position corresponding to a part of the outer peripheral edge of the disc D. The upper plate, which is not shown in FIG. 2, is provided with circular openings 33 at positions corresponding to the central hole D ′ of the disk D and its peripheral portion.

Further, a movable lid body 34, which has a position in which the openings 32 and 33 are in an open state and a position in which the openings are in a closed state, is slidably attached to the bottom plate 31a and the upper plate. Has been. The movable lid 34 has a spring member 35 whose one end is locked to the outer edge of the casing 31 close to the opening 32.
The other end of is locked, and by this spring member 35,
The movable lid 34 is normally urged to take a position to close the openings 32 and 33 as indicated by the alternate long and short dash line in Table 2. The movable lid 34 is provided with a spring from the position where the openings 32 and 33 are closed to the position where the openings 32 and 33 are opened as shown by the solid line in FIG. A notch 36 is formed that engages with a part of the opening / closing arm mechanism when the member 35 is moved against the biasing force of the member 35. A lock recess 37 is provided in each of the opposite side edges of the bottom plate 31a of the box 31 and the disk cartridge 3
The disk cartridge 30 can be fixed to the cartridge mounting portion 20 when 0 is mounted in the cartridge mounting portion 20.

When the disc cartridge 30 configured as described above is mounted on the cartridge mounting portion 20 provided on the fixed chassis 10, the disc cartridge 30 is guided by the cartridge mounting portion 20 from the outside by the cartridge guide portions 21a and 21b. It is inserted in the direction indicated by the arrow Q in FIG. 1 and fixed to the cartridge mounting portion 20 at a predetermined insertion position.

Further, inclined side holes 18a and 18b are provided in each of the side plate portions 18 that hang down from the opposite side edge portions of the fixed chassis 10, and these inclined through holes 18a and 18b are provided in the opposite side edge portions of the movable chassis 40. Engaging members 19a and 19b axially attached to the side plate portions 41 that hang down from the respective parts are fitted. Then, the engaging members 19a and 1
9b moves in the inclined through holes 18a and 18b, respectively, and accordingly, the movable chassis 40 moves the engaging members 19a and 1b.
Within the range of movement according to the inclined through holes 18a and 18b of 9b, the fixed chassis 10 moves in the insertion direction of the disc cartridge 30 into the cartridge mounting portion 20 indicated by the arrow Q, and at the same time, the inclined through holes 1a and 18b move. It is designed to move up and down according to the inclination.

The movable chassis 40 is provided with a disk mounting portion 42 that is driven to rotate so as to face the cutout 10a provided in the fixed chassis 10, and the optical head means 43 is provided on the lower surface of the movable chassis 40. Two guide shaft members 44 attached to the side are movably supported within the cutout hole 40a formed in the movable chassis 40. The optical head unit 43 has the disk cartridge 30 mounted in the cartridge mounting portion 20, and the disk D built therein is exposed to the cutout hole 10a provided in the fixed chassis 10 through the opened opening 32. Information is recorded on the disk D or information is reproduced optically from the disk D in a state in which the disk is mounted in the disk mounting section 42 and rotated in the disk cartridge 30. In addition, the cutout hole 4 of the movable chassis 40
At a position sandwiching 0a, the cartridge mounting is performed through the through holes 10b formed in the fixed chassis 10 corresponding to the notches 22 provided in the cartridge guide portions 21a and 21b mounted on the fixed chassis 10, respectively. Part 2
An engagement pin 47 is provided upright to engage with the locking recess 37 of the disk cartridge 30 mounted in 0.

Further, a support member 11 is attached to the fixed chassis 10 at a position close to the cutout hole 10a. A clamp arm 50 forming a disc pressing means is rotatably attached to the support member 11 via a shaft 12, and a locking lever 61 is rotatably attached to the support member 11 via a shaft 13. . The other end of the coil spring member 14, one end of which is locked to the shaft 12, is locked to the locking lever 61, and the one end of the locking lever 61 has an L-shaped guiding through hole 61b. Is formed, and the other end of the locking lever 61 has a support member 11
Through the through hole 11a and the corresponding through hole of the fixed chassis 10 extending to the lower surface side of the fixed chassis 10.
At the other end of the locking lever 61, as shown in FIG. 4, a "U" -shaped locking engaging portion 61a is formed.

The clamp arm 50 is provided with, for example, a magnet type clamp member 52 at its tip portion, and the clamp member 52 is normally positioned above the cutout hole 10 a of the fixed chassis 10. This clamp arm 50 has
A connecting member 51 penetrating the guide through hole 61b of the locking lever 61 is provided, and the other end of the spring member 15 whose one end is locked to the support member 11 is locked, and the clamp arm 50 is a spring member. The clamp member 52 is urged by the shaft 15 in the direction of approaching the fixed chassis 10 with the shaft 12 as the fulcrum shaft. Normally, the connecting member 51 is formed with the guide through hole 6 formed in the locking lever 61.
1b, the coil spring member 1 of the locking lever 61 is engaged with the end of the locking lever 61 opposite to the recess 62.
The shaft 12 is rotated about the rotation fulcrum shaft in association with the rotation of the shaft 13 as the rotation fulcrum shaft against the urging force of the connection member 4, and the connecting member 51 is inserted into the recess 62 of the guide through hole 61b. It is brought into the engaged state. In such a state, the clamp member 52 provided on the clamp arm 50 is not attached to the disc cartridge 30.
Is mounted on the cartridge mounting portion 20, and the disc D in the disc cartridge 30 mounted on the disc mounting portion 42 is clamped through the circular opening 33 formed on the upper plate of the disc cartridge 30. Further, the clamp arm 50 includes a fixed chassis 1
It has an arm driven lever 53 protruding to the lower surface side of the fixed chassis 10 through a through hole 10c formed in 0,
The driven lever 53 is operated on the lower surface side of the fixed chassis 10 by the release mechanism 24 as shown by the broken line in FIG. 3, and the clamp arm 50 resists the urging force of the spring member 15 to prevent the shaft 12 from moving. The clamp member 52 is rotated about the rotation fulcrum shaft in a direction away from the fixed chassis 10, whereby the recess 62 of the guide through hole 61b and the coupling member 51 are released from each other, and the clamp member 52 is released. The fixed chassis 10 is positioned above the cutout hole 10a.

Furthermore, an opening / closing arm mechanism guide portion 70 is formed on the fixed chassis 10 adjacent to the support member 11,
An arm member 81 constituting an open / close arm mechanism 80 for moving the movable lid 34 provided in the disc cartridge 30 is engaged with the open / close arm mechanism guide portion 70.

As shown in FIG. 3, the opening / closing arm mechanism guide portion 70 has a “V” -shaped guide hole 71 and an arrow Q in FIG.
And a linear guide hole 72 extending in a direction along the mounting direction of the disc cartridge 30 with respect to the cartridge mounting portion 20. The connecting bearing portion 82 of the arm member 81 constituting the open / close arm mechanism 80 is engaged with the guide hole 72 of the open / close arm mechanism guide portion 70 as shown in FIG. An engagement pin 83 protruding downward from the coupling bearing portion 82 is inserted into the hole 71.

The other end of the coil spring member 85, one end of which is locked to the support member 11, is attached to the end of the coupling bearing portion 82, and the opening / closing arm mechanism 80 is formed by the coil spring member 85 and the arm member 81. Has been done.

At the tip of the arm member 81 having the connecting bearing portion 82 and extending in substantially parallel to the fixed chassis 10, the arm member 81 is provided at the tip end thereof with the movable lid 34 provided in the disk cartridge 30. An engaging piece 86 that engages with the notch 36 is provided so as to project downward. Then, the rotating shaft 87 erected at the corner portion of the movable chassis 40 is inserted into the coupling bearing portion 82 as shown in FIG.

When the arm member 81 is moved, the arm member 81 is guided by the opening / closing arm mechanism guide portion 70, and the position of the arm member 81 is regulated in the direction along the rotating shaft 87 by the engagement of the coupling bearing portion 82 and the guide hole 72. When the disc cartridge 30 is inserted into the cartridge mounting portion 20, before the disc cartridge 30 reaches the first insertion position, the engaging piece 82 of the disc cartridge 30 is notched in the movable lid 34 provided in the disc cartridge 30. The position for engaging with 36 is taken. Then, in a state in which the engagement piece 86 is engaged with the cutout portion 36 of the movable lid 34 provided in the disc cartridge 30 until the disc cartridge 30 is continuously inserted and reaches the first insertion position, the arm member is provided. When the disk cartridge 30 is inserted, the disk 81 rotates about the rotary shaft 87 while being guided by the guide hole 71 into which the engaging pin 83 is inserted, thereby rotating the movable lid 34 of the disk cartridge 30. Move, opening 3
Positions 2 and 33 are open. Subsequently, in a state where the disc cartridge 30 is further inserted from the first insertion position to the second insertion position, the arm member 81
Is a state in which the movable lid 34 of the disc cartridge 30 maintains the position where the openings 32 and 33 are in the open state,
Along with the movement of the movable chassis 40, the movable chassis 40 is guided by the guide holes 71 and 72 and linearly moves in the direction along the insertion direction of the disc cartridge 30, whereby the disc cartridge 30 takes the second insertion position. The disc D built therein is allowed to be mounted in the disc mounting portion 42.

The fixed chassis 10 is provided on the opposite side edge of the movable chassis 40.
Through each of the through holes 25 provided at the opposite side edge portions of
A rising portion 48 that protrudes to the upper surface side of the fixed chassis 10 is provided. A roller 49 is attached to each of the rising portions 48, and each of these rollers 49 is usually
At the ends of the cartridge guides 21a and 21b attached to the fixed chassis 10 on the support member 11 side, the cartridge guides 21a and 21b are placed in positions where they are inserted into the cartridge mounting part 20 and come into contact with the disc cartridge 30 that has reached the first insertion position. To be taken. Thereby, the movable chassis 40
The disk cartridge 30 inserted in the cartridge mounting portion 20 is moved by the arm member 81 to the movable lid 34.
Is set to the position where the openings 32 and 33 are opened, and then each of the rollers 49 contacts the disc cartridge 30 in a state where the rollers are further inserted from the first insertion position to the second insertion position. When the disc cartridge 30 is contacted and pressed, it is moved in the insertion direction of the disc cartridge 30.

A pair of falling portions 41a is formed at the end of the movable chassis 40 opposite to the disk mounting portion 42 side, and a locked member 63 is fixed to these falling portions 41a. The locked member 63 moves in accordance with the movement of the movable chassis 40 with respect to the fixed chassis 10 and the supporting member 1
The locking lever 61, which is rotatably attached to the first shaft 1 through the shaft 13, is engaged with the locking engagement portion 61a located on the lower surface side of the fixed chassis 10 to apply the locking lever 61 to the biasing force of the coil spring member 14. It is designed to rotate against.

Further, between the fixed chassis 10 and the movable chassis 40, one end is locked by the fixed chassis 10 and the other end is locked by the movable chassis 40.
Are arranged through a through hole 10d formed in the fixed chassis 10 and a through hole 41b formed in the movable chassis 40. With the coil spring member 90, the movable chassis 40 is always provided with respect to the fixed chassis 10. The disc cartridge 30 is biased in the direction opposite to the insertion direction of the disc cartridge 30 with respect to the cartridge mounting portion 20 shown by the arrow Q in FIG.

G-2 Disc Cartridge and Disc Attachment / Detachment Operation (FIGS. 3 and 4) With such a configuration, the disc cartridge 30 as shown in FIG. When recording information on the disc D housed in the cartridge 30 or reproducing information from the disc D, first, the disc cartridge 30, the movable lid 34 thereof, and the spring member 3 are used.
Under the urging force of the cartridge 5, the openings 32 and 33 are positioned so as to be in the closed state.
Is inserted in the direction indicated by the arrow Q in FIGS. At this time, the movable chassis 40 is at the most lowered position with respect to the fixed chassis 10 as indicated by the broken line in FIG. 4 due to the action of the coil spring member 90, and thus is attached to the movable chassis 40. The engaging members 19a and 19b are in a state of engaging the lower ends of the inclined through holes 18a and 18b, respectively.

Then, before the disc cartridge 30 reaches the first insertion position shown by the solid line in FIGS. 3 and 4,
A movable lid body provided on the disc cartridge 30 with the engagement piece 86 of the arm member 81 that takes the standby position shown by the alternate long and short dash line in FIGS. 3 and 4 when the state becomes the insertion position shown by the alternate long and short dashed line. It engages with the notch 36 of 34.

Then, with the engagement piece 86 of the arm member 81 engaged with the cutout portion 36 of the movable lid 34 provided in the disc cartridge 30, the disc cartridge 30 is continuously inserted until it reaches the first insertion position. During this period, the arm member 81 rotates about the rotation shaft 87 against the biasing force of the coil spring member 85 in response to the insertion of the disc cartridge 30, and thereby the movable lid body of the disc cartridge 30. 34 is moved to take the position where the openings 32 and 33 are opened. Then, the disc cartridge 30 reaches the first insertion position, and the arm member 81
However, the movable lid 34 of the disk cartridge 30 is assumed to be in a position where the openings 32 and 33 are completely opened when the movable cover 34 assumes the position shown by the solid line in FIGS. 3 and 4. . At this time, the tip of the disk cartridge 30 comes into contact with the roller 49 attached to the rising portion 48 provided on the movable chassis 40.

Further subsequently, in the state where the disc cartridge 30 is inserted from the first insertion position to the second insertion position shown by the chain double-dashed line in FIGS. 3 and 4, the movable chassis 40 is moved by the disc cartridge 30. Laura 49
When is pressed, it is moved in the insertion direction of the disc cartridge 30, which is indicated by arrow Q. At this time, the engaging member 1 attached to the movable chassis 40
9a and 19b move in the insertion direction of the disc cartridge 30 in the inclined through holes 18a and 18b, respectively, so that the movable chassis 40 moves in the insertion direction of the disc cartridge 30 with respect to the fixed chassis 10, and at the same time, the inclined through hole 18a. And the ascending movement of 18b is performed. Disk cartridge 3 of such movable chassis 40
With the movement of 0 in the insertion direction, the arm member 81 keeps the movable lid 34 of the disk cartridge 30 at the position where the openings 32 and 33 are in the open state, and the guide hole 7
Under the guidance of 1 and 72, the linear movement is made in the insertion direction of the disc cartridge 30. Further, at this time, the locked member 63 attached to the movable chassis 40 engages with the locking engaging portion 61a provided on the lower surface side of the fixed chassis 10 of the locking lever 61, and inserts this into the disc cartridge 30. Move in the direction. This causes the locking lever 61 to rotate around the shaft 13 against the biasing force of the coil spring member 14, and accordingly, the connecting member 51 attached to the clamp arm 50.
However, it relatively approaches the concave portion 62 of the guide through hole 61b provided in the locking lever 61.

Then, when the disc cartridge 30 reaches the second insertion position, the movable chassis 40 has the fixed chassis 10 whose part is shown by a chain double-dashed line in FIG.
It is assumed to take the most elevated position with respect to. Therefore, at this time, the engaging members 19a and 19b attached to the movable chassis 40 are the same as the engaging members 19a in FIG.
As indicated by a chain double-dashed line, inclined through holes 18a and 18b
Will engage the upper end of the. In such a state, the engagement pin 47 provided upright on the movable chassis 40 communicates with the through hole 10b provided in the fixed chassis 10 and the notch 22 formed in the cartridge guide portions 21a and 21b, and the disc cartridge 30. The disk cartridge 30 is fixed to the cartridge mounting portion 20 by engaging with the locking recess 37 formed on the bottom surface portion 31 a of the disk cartridge 30. At this time, the arm member 81 holds the movable lid 34 of the disc cartridge 30 at the position where the openings 32 and 33 are in the open state, and as shown by the chain double-dashed line in FIGS. 3 and 4. It is assumed to take the most retracted position in the insertion direction of the disc cartridge 30.

In this way, the movable chassis 40 becomes the fixed chassis 10.
If it is assumed that the disk mounting portion 42 installed in the movable chassis 40 and the central hole D ′ of the disk D built in the disk cartridge 30 are opposed to each other, the disk mounting portion 42 installed in the movable chassis 40 is located at a position where the disk mounting portion 42 and the central hole D ′ are opposed to each other. The central hole D ′ of the disc D and its peripheral portion are engaged with the disc mounting portion 42 through the opening 32, and the disc D is mounted on the disc mounting portion 42 without coming into contact with the inner surface portion of the disc cartridge 30. To be done. Further, at this time, the connecting member 51 attached to the clamp arm 50 has the recess 62 of the guide through hole 61 b provided in the locking lever 61.
Is engaged with the clamp arm 50.
Is urged by the spring member 15 to rotate around the shaft 12, and the clamp member 5 provided at the tip of the clamp arm 50
2 is lowered toward the disc cartridge 30 fixed in the second insertion position. Then, the clamp member 52 contacts the disc D mounted in the disc mounting portion 42 from above through the opening 33 provided in the upper plate of the disc cartridge 30, and holds the disc D with the disc mounting portion 42. To clamp. in this case,
The clamp member 52 and the disk mounting portion 42 are magnetically engaged with each other.

As described above, when the disc cartridge 30 is fixed to the cartridge mounting portion 20 in the second insertion position,
The force that presses the movable chassis 40 by the disk cartridge 30 in the direction indicated by the arrow Q in FIGS. 3 and 4 disappears, and the movable chassis 40 becomes a coil spring member 9.
By being pulled in the direction opposite to the direction indicated by the arrow Q by the biasing force of 0. However, at this time, the connecting member 51 attached to the clamp arm 50 causes the recess 6 of the guide through hole 61 b provided in the locking lever 61.
2, the locking lever 61 is relatively locked to the connecting member 51 attached to the clamp arm 50 so that the locking lever 61 cannot rotate around the shaft 13. It Therefore, the locking lever 61 restrains the locked member 63 attached to the movable chassis 40 engaged with the locking engaging portion 61a, and as a result, the movable chassis 40 is fixed to the fixed chassis 10. On the other hand, you will be restricted to the highest position.

In this way, the disc cartridge 30 is fixed to the cartridge mounting portion 20 at the second insertion position, the movable chassis 40 is constrained to the most raised position with respect to the fixed chassis 10, and the disc cartridge 30 has a built-in disc. The optical head means 43 that moves along the two guide shaft members 44 within the range of the cutout hole 40a provided in the movable chassis 40 in a state in which D is mounted on the disk mounting portion 42 and clamped by the clamp member 52. Information recording or information reproduction is performed.

Next, after information recording or information reproduction by the optical head means 43 is completed, the release mechanism 24 provided on the lower surface side of the fixed chassis 10 projects to the lower surface side of the fixed chassis 10 through the through hole 10c of the fixed chassis 10. When the arm driven lever 53 of the clamp arm 50 is operated, the clamp arm 50 moves around the shaft 12 around the spring member 15.
It is rotated against the biasing force of. This allows
The clamp arm 50 is in a state of separating the clamp member 52 from the disc D mounted on the disc mounting portion 42, and the guide through hole 61b provided in the connecting member 51 attached to the clamp arm 50 and the locking lever 61. Is disengaged from the recess 62. For this reason,
The locking lever 61 is brought into a state where it can rotate around the shaft 13, and the movable chassis 40 moves so as to be returned in the direction opposite to the direction indicated by the arrow Q by the biasing force of the coil spring member 90. At this time, the engaging members 19a and 19b attached to the movable chassis 40 are respectively attached to the inclined through holes 18.
Since the movable chassis 40 moves in the directions a and 18b in the direction opposite to the direction indicated by the arrow Q, the movable chassis 40 is
With respect to 0, it moves in the direction opposite to the direction indicated by the arrow Q, and at the same time, descends according to the inclination of the inclined through holes 18a and 18b. As a result, the disc mounting portion 42 installed in the movable chassis 40 is disengaged from the disc D built in the disc cartridge 30, and the engaging pin 47 descends along with the movable chassis 40, so that the disc cartridge 30 moves to the first position. The fixed state at the insertion position of 2 is released. The movement of the movable chassis 40 is stopped by the engaging members 19a and 19b contacting the lower ends of the inclined through holes 18a and 18b, respectively.

The movable chassis 40, which moves in the direction opposite to the direction indicated by the arrow Q, presses the disk cartridge 30 by the roller 49 in the direction opposite to the direction indicated by the arrow Q,
The disc cartridge 30 is moved from the second insertion position toward the first insertion position. Also, at this time,
The arm member 81 is moved from the position shown by the chain double-dashed line in FIGS. 3 and 4 to the position shown by the solid line in a state where the engagement piece 86 is engaged with the cutout portion 36 of the movable lid 34. The movable chassis 40 is moved under the guidance of the guide holes 71 and 72. The arm member 81 which has reached the position shown by the solid line in FIGS. 3 and 4.
Is rotated by the urging force of the coil spring member 85 from the position indicated by the solid line in FIGS. 3 and 4 to the position indicated by the alternate long and short dash line with the rotation shaft 87 as the fulcrum shaft. At this time, the arm member 81 moves the movable lid 34 of the disc cartridge 30 to the position where the openings 32 and 33 are closed, and the disc cartridge 30 is moved from the first insertion position to the position shown in FIGS. 3 and 4. In the state where the disk cartridge 30 takes the position shown by the alternate long and short dash line in FIGS. 3 and 4, the engaging piece 86 of the arm member 81 is moved to the position indicated by the alternate long and short dashed line in FIG.
The engagement state between the notch portion 36 of the movable lid 34 and the movable lid 34 is released.

As described above, when the disc cartridge 30 is inserted and mounted in the cartridge mounting portion 20, the disc cartridge 3 is inserted in the cartridge mounting portion 20.
The arm member 81 is rotated by 0, and by the rotation of the arm member 81, the movable lid 34 of the disk cartridge 30 is moved to a position where the openings 32 and 33 are opened, and then further inserted. The movable cartridge 40 is moved in the insertion direction of the disc cartridge 30 with respect to the fixed chassis 10 by the disc cartridge 30 that is moved upward, and is moved upward, and the disc cartridge of the arm member 81 is moved based on the movement of the movable chassis 40. An opening 32 is formed in the movable lid 34 of 30.
And 33 in the open position, the disc cartridge 30 moves in the insertion direction, the disc cartridge 30 is fixed to the cartridge mounting portion 20 at the insertion end position, and the disc is fixed to the cartridge mounting portion 20. Since the disk D contained in the cartridge 30 is mounted on the disk mounting portion 42, clamped by the clamp member 52, and the like, and further, the movable chassis 40 itself is constrained at an elevated position with respect to the fixed chassis 10. is there.

Therefore, under a relatively simple operation that is unlikely to cause malfunction,
The movable lid 34 of the disc cartridge 30 has an opening 32.
After the discs 33 and 33 have been moved to the open position, the state where the disc D contained in the disc cartridge 30 is mounted on the disc mounting portion 42 and clamped by the clamp member 52 is surely obtained.

H Effect of the Invention As is apparent from the above description, according to the disc player of the present invention, the disc having the opening for exposing the built-in disc to the outside and the movable lid for closing or opening the opening. When recording or reproducing information using the disc built in the cartridge, the main chassis member having the cartridge mounting portion and the sub chassis that simply moves with respect to the main chassis member as the disc cartridge is inserted into the cartridge mounting portion. Based on a relatively simple structure that includes a chassis member and an opening / closing arm mechanism that is rotatably supported by the sub chassis member and that performs simple rotation and linear movement when the disc cartridge is inserted into the cartridge mounting portion. , Just insert the disc cartridge into the cartridge mounting part and Opening is in the open state the lid is controlled, then
It is possible to create a state in which the disc facing the outside from the opening is reliably mounted in the disc mounting part.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a main 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. FIG. 4 and FIG. 4 are a plan view and a side view for explaining the configuration and operation of the example shown in FIG. In the figure, 10 is a fixed chassis, 20 is a cartridge mounting part, 21a and 21b are cartridge guiding parts, 30 is a disk cartridge, 40 is a movable chassis, 42 is a disk mounting part, 50 is a clamp arm, 70 is an opening / closing arm mechanism guiding part. , 80 is an opening / closing arm mechanism, 81 is an arm member, 82 is a connecting bearing portion, and 87 is a rotating shaft.

Claims (1)

[Claims] 1. A disc cartridge having a disc therein, the disc cartridge having an opening for exposing the disc to the outside, and a movable lid having a position for closing the opening and a position for opening the disc. A main chassis member having a cartridge mounting portion to be inserted and mounted; a sub chassis member in which the disc mounting portion is installed and is moved up and down with respect to the main chassis member when the disc cartridge is inserted into the cartridge mounting portion; It is rotatably supported by the sub chassis member and is guided by a guide portion provided on the main chassis member, and is engaged with the disc cartridge inserted into the cartridge mounting portion to be inserted. The disc cartridge is rotated until the disc cartridge reaches the first insertion position in the cartridge mounting portion. When the movable lid of the disk cartridge is moved to a position where the opening is opened, and the inserted disk cartridge further moves from the first insertion position to the second insertion position in the cartridge mounting portion. Is a disc built in the disc cartridge under the condition that the disc cartridge inserted moves in the direction along the insertion direction of the disc cartridge together with the sub chassis member to take the second insertion position. A disc player configured to include an opening / closing arm mechanism that allows mounting of the disc on the disc mounting portion.