JPH03134855A - Auto-loading disk player - Google Patents

Abstract

PURPOSE:To reduce the cost without detriment to a closing function of a lid body interposed with an airtight member by parallel moving and pivotally moving an arm member combined with one end part of the back side of the lid body in accordance with the movement of a movable member for reciprocating a disk carrying part. CONSTITUTION:The arm member 19 is moved by the movable member for moving the disk carrying part 13 to carry out its projecting and housing motion in order to convey a disk from the outside of the player to a play position or contrary, from the play position to the outside of the player, whereas a driving source for giving driving force to this movable member is utilized for a driving source for the arm member 19 and the lid body 16. Then, when the lid body 16 is closed, the pivotal movement of the arm member is regulated by operating a pivotally supporting guide part and a parallel guide part so that the lid body 16 is brought under the locking state against a player housing 11. By this method, there is no need to provide any particular device for locking the lid body, and hence reduction of cost can be achieved.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD This invention relates to autoloading disc players.

BACKGROUND ART As shown in FIG. 8, a player housing 1 surrounding a performance means including a turntable and a pickup has an opening 1a, and a disc (not shown) is placed on a disc holder 2 which can be protruded and stored through the opening 1a. An autoloading disc player is known in which the disc is transported to a playing position by a playing means by loading the disc and moving the disc carrying section. In such an autoloading disc player, in order to prevent wind noise caused by high-speed rotation of the turntable during disc play from leaking outside through the opening and causing discomfort to the user, A lid body 4 for closing the opening [a] is pivotally provided.

In the autoloading disc player having such a configuration, in order to almost completely prevent the leakage of the above-mentioned unpleasant sounds, an annular shape made of rubber or the like is provided on the abutting surface of the edge of the opening where the lid body 4 comes into contact, as shown in the figure. It is conceivable to provide the airtight member 5. However, in this configuration, as shown in FIG. 9, each time the lid 4 pivots, the edge 4a of the lid 4 and the surface of the airtight member 5 rub against each other, causing the soft airtight member 5 to rub against each other.
There is a concern that it will gradually wear out and its functionality will be impaired.

Summary of the Invention [Object of the Invention] The present invention has been made in view of the above-mentioned points, and its object is to prevent the closing function of the lid formed by interposing the airtight member from being impaired, and to It is an object of the present invention to provide an odd loading disc player that maintains this function at low cost.

[Structure of the invention]

In the autoloading disc player according to the present invention, the disc carrying part, which can protrude and be stored freely through the opening provided in the player housing surrounding the playing means and which carries the information recording disc, is reciprocated in a predetermined direction by being given a driving force. a disc transport mechanism that transports an information recording disc to be played to a performance position by moving it by the operation of a movable member; a lid that closes the opening by abutting a contact surface of the edge of the opening; an autoloading disc player having a lid moving mechanism for bringing the lid into contact with the abutting surface, wherein an airtight member is interposed between the lid and the abutting surface, and the lid moving mechanism an arm member connected at one end to the back surface of the lid body; and a pivot support that guides the other end of the arm member so as to be pivotable and movable to a small extent in a direction substantially perpendicular to the contact surface. a guide portion, a parallel guide portion that is parallel to the direction in which the other end portion is guided and guides the intermediate portion of the arm member; and a parallel guide portion that is continuous with the parallel guide portion and extends with the pivot center of the arm member as a center of curvature. and a guide member having an arcuate guide portion that guides the intermediate portion, and the arm member is caused to move in parallel and pivot in accordance with the movement of the movable portion H.

[Action of the invention]

In an autoloading disc player with such a configuration, the disc is directed from outside the player toward the playing position,
Conversely, the arm member is actuated by the reciprocating motion of the movable member to cause the disc holder to protrude and store the disc in order to transport it from the playing position to the outside of the player, and the arm member is actuated by the reciprocating motion of the movable member to cause the disc holder to be transported toward the outside of the player. When moving in the range between the abutment position where it abuts the contact surface and a position slightly separated from it, the arm member moves in parallel approximately perpendicularly to the contact surface, and the lid body follows this and moves in parallel. When the cover moves outside the range, the arm member pivots and the cover also pivots.

Embodiments Hereinafter, an autoloading disc player as an embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the player housing 1
1, that is, the front I panel 12 has a rectangular opening 12a extending in the left-right direction so that a generally rectangular plate-shaped tray 13 serving as a disc holding portion can protrude from and be housed in the player housing. It is provided. However, the direction of arrow X is to the left, and arrows Y and Z indicate forward and upward, respectively. On the front panel 12, together with a switch group 15 for operating the disc player, there is a rectangular plate-shaped lid 16 that closes the opening by coming into contact with the contact surface 12b at the edge of the opening 12a. It is provided. An airtight member 18 made of rubber or the like is provided on the contact surface 12b of the opening 12a, and the back edge of the lid 16 can come into contact with this airtight member 18. The airtight member 18 is continuously provided around the entire edge of the opening 12a, and is formed in a rectangular ring shape as a whole. Further, the airtight member 18 has the surface 1 of the opening 12a.
It is fitted into the groove formed in 2b.

A pair of arm members ] 9 are integrally connected at one end to the back surface of both left and right ends of the lid body 16 .

Note that only the left arm member is shown in the figure.

Hereinafter, only the left arm member and its related peripheral mechanisms will be described, but the right arm member and its peripheral mechanisms are constructed in the same way.

As shown in FIG. 2, the other end of the arm member 19 is provided with a pin 19a that protrudes in the left-right direction. It is pivoted at a. The guide member 21 is formed of a steel plate or the like into a rectangular plate shape, and is connected to the front panel 12.
It is fixed to the back surface of the body with a screw (not shown) or the like, and extends in the front-rear direction. The pivot guide portion 21a formed on the guide member 21 and pivotally supporting the pin 19a of one arm member is a long hole extending perpendicularly to the contact surface 12b at the edge of the opening 12a, and therefore, The pin 19a, that is, the other end of the arm member 19, is pivotable and slidable within the elongated hole.

The guide N shrine 21 includes a parallel guide part 21b parallel to the pivot guide part 21a, and an arcuate guide part 21c extending continuously from the front end of the parallel guide part with the pivot center of the arm member 19 as the center of curvature. is formed. Another pin 19b is actually shown in parallel to the pin 19a at the intermediate portion of one arm member, and this pin 19b is slidably fitted into the parallel guide portion 21b and the arcuate guide portion 21c.

A linear link member 23 is disposed near the end of one of the arm members, and one end of the link member 23 is pivotally connected to the pin 19b.

A pin 2 is provided at the other end of the link member 23 in parallel with the pin 19b.
3a is fixedly installed, and this pin 23a can freely slide on a linear guide portion 21d formed on the guide member 21 so as to extend in the front-rear direction, that is, in a direction perpendicular to the contact surface 12b of the opening 12a. It is fitted.

Although not shown, a biasing means for biasing the lid 16 in the closing direction is provided. Specifically, the biasing means is composed of a coil spring, one end of which is connected to the pin 1.
9b, and the other end is connected to the rear part of the guide member 21.

Here, the disk transport mechanism including the tray 13 will be explained.

As shown in FIGS. 1 and 2, the tray 11 is movable within the player housing 11 in a direction perpendicular to the disk supporting surface of the turntable 24, that is, in an up and down direction (in the direction of arrow Z and the opposite direction). It is supported movably in the front-rear direction (direction of arrow Y and the opposite direction) by a substantially flat container 25 provided therein. Although not shown, a tray drive means for reciprocating the tray 11 back and forth relative to the container 25 is provided. A pair of vertical surfaces 25a extending upward are formed on the left and right sides of the container 25, and a pair of pins 25b are provided on the outer surface of each text portion, spaced apart in the front-rear direction and projecting outward. It is set up. A pair of rectangular plate-shaped cam members 26, that is, movable members, are provided on the left and right so as to sandwich the vertical surface 25a of the container 25 between the container 25 and the container 25.

0 Each cam member 26 is provided so as to be able to reciprocate in the front-back direction with respect to the player housing 2. Also,
Although not shown as a whole, these two cam members 2
A cam member driving means is provided for reciprocating 6 in synchronization. As shown in FIG. 2, a rack portion 26a is provided at the lower side of the front end of the cam member 26 along the moving direction of the cam member.
is formed, and a pinion 28 meshes with the rack portion. This pinion 28 is rotationally driven by a motor (not shown) via a speed reduction mechanism. These motors, the speed reduction mechanism, the pinion 28, and the rack portion 26a constitute the above-mentioned cam member driving means.

As shown in FIG. 2, each pin 25b protruding from the vertical surface 25a of the container 25 is slidably engaged with a cam groove 26b formed in each cam member 26. The cam groove 26b is formed as a whole so as to be inclined forward (in the direction of arrow Y) and downward (in the direction opposite to arrow Z). That is,
By reciprocating each cam member 26 back and forth, the container 25 is moved up and down together with the tray 13 supported by it, that is, in a direction perpendicular to the disk supporting surface of the turntable 24. There is.

The above-described cam member driving means and the cam member 26 are collectively referred to as a container driving means that moves the container 25 up and down together with the tray 13 supporting the container 25. Further, the optical information recording disk 29 to be played (as shown in FIG. A disk transport mechanism is configured to transport the disc (as shown) or 30 to a performance position by a performance means including a turntable 24 and an optical pickup (not shown), and conversely transport the disc from the performance position back to the outside of the player housing.

On the other hand, the aforementioned opening/closing operation of the lid body 16 is performed by the cam member 26, which is the aforementioned movable member. That is, as shown in FIG. 2, a roller 23b is attached to the other end of the linking member 23, one end of which is pivotally connected to the intermediate portion of the arm member 19 that supports the lid 16. The front end 26d of the member 26 is brought into contact with this roller 23b. Therefore, link member 2
3 operates as the cam member 26 reciprocates, thereby opening and closing the lid 16. As will be described later, when the lid 16 is opened and closed, the arm member 19 supporting the lid 16 pivots and moves in parallel in a direction perpendicular to the contact surface 12b of the edge of the opening 12a. We will also do the following.

Further, as is particularly clear from FIG. 2, the arm member 19 is formed so as to protrude away from the back surface of the lid 6 and then curve toward the front surface of the lid 16. It is formed in a U-shape. Due to this shape, the arm member 19 can freely pivot without interfering with the edge of the opening 12a.

The arm member 19 and the guide member 21 that guides the lid 16 constitute a lid moving mechanism for moving the lid 16 toward and away from the airtight member 18. ing.

Next, the casing structure including the player housing 11 will be explained based on FIGS. 3 to 5.

As shown in FIGS. 3 to 5, the player housing 1
1 is formed into a rectangular parallelepiped shape as a whole, and a shell member 33 made of resin is fixedly installed inside the player housing. Note that four insulators 34 are attached to the four corners of the lower surface of the bottom plate of the player housing 1.

As shown in the figure, the shell member 33 has a support portion 33a that supports the turntable 24 and a support member 36, and leg portions 33b that are coupled to the outer peripheral portion of the support portion and extend downward. Side wall portions 33c extending upward are formed on both left and right sides of the supporting portion 33a. Plate-shaped shielding members 36 to 38 made of steel plates, resin, or the like are installed between the upper ends of these side wall portions 33c. Each shielding member 36
4 to 38 are formed by bending their both sides at substantially right angles, thereby increasing the overall rigidity. It should be noted that the above-described disk transport mechanism, together with the turntable 24, is connected to the side wall section 33 of the above-mentioned supporting section 33a1.
c and a partition wall formed by each of the shielding members 36 to 38. Note that, as mentioned above, since the tray 13 can be protruded from and stored in the player housing 1,
The space surrounded by the partition wall is open toward the front (in the direction of arrow Y).

Further, the space is also opened toward the rear.

A large number of ventilation holes (not shown) are formed in the back surface 11a of the player housing 11 facing this rear open end. In this configuration, as the disk 29 rotates due to the rotation of the turntable 240, air convection occurs in the space, outside air flows into the space through the ventilation hole, and the air in the space It leaks outside.

Due to this convection, the heat generated by the spindle motor 37 that rotationally drives the turntable 24 is effectively guided to the outside, and the temperature inside the player housing 11 is prevented from increasing by 1.

In addition, the player 5 housing back portion 11a and the leg portion 33 at the rear end of the shell member 33 are provided with ventilation holes as described above.
Power transformers 39 and 40 are arranged so as to be surrounded by b. By arranging the transformers in this position, the heat emitted from each of the transformers 39 and 40 can be effectively dissipated outside the player by the above-mentioned convection.

Further, as described above, since the leg portion 33b at the rear end of the shell member 33 is interposed between the performance means consisting of the turntable 24 and the optical pickup (not shown) and these transducers, the transformer 39 The heat generated by the player and 40 does not reach the playing means.

Furthermore, as is clear from Fig. 3, each transformer has three and four transformers.
0 is the rear end of the player and is located at the center of the player in the left-right direction.

By arranging the comparatively heavy transformer in this manner, the weight balance between the left and right sides of the player is maintained.

As shown in FIGS. 3 to 5, the turntable 24
A circuit board 42 carrying a circuit for controlling the operation of the disc player is provided on one side of the turntable 24 parallel to the disc supporting surface of the turntable 24. The aforementioned shielding member 36 is interposed between the disk supporting surface of the turntable 24 and this circuit board 42.

By the way, if the disc 29 to be played is warped, the air within the player housing may pulsate due to the warp as the turntable 24 rotates. In this disc player, as described above, since the shielding member 36 is interposed between the turntable 24 and the circuit board 42 above it, this pulsation does not reach the circuit board 42.

In addition to the circuit board 42 described above, several circuit boards 43 to 46 are provided. The circuit boards 43 and 44 are disposed along the outer surfaces of the left and right side walls 33C of the shell member 33. Circuit board 4 placed on the right side of the player
3 is for audio playback, which is one of the functions of the disc player, and another circuit board 44 provided on the left side of the player is for video playback 7. Further, among the transformers 40 and 39 described above, the right transformer 40 serves for audio reproduction, and the other transformer 39 serves for video reproduction. As is clear from these configurations, the disk transport mechanism (described above)
An audio playback system and a video playback system are separately provided on the right and left sides of the player.

Next, the operation of the autoloading disc player having the above configuration will be briefly explained with reference to FIGS. 6 and 7.

First, as shown in FIGS. 1 and 2, the tray 13 is projected out of the player housing, and a disc to be played, such as a digital video disc 29, is placed on the tray. Note that the player housing 11 of the tray 13
The outward projecting operation is performed by following the completely opposite process of the retracting operation described below, so a detailed description thereof will not be given.

After the two discs are placed on the tray 13, the disc loading switch of the switch group 15 on the front panel 12 is operated. Then, the tray 13 is pulled into the player housing 11 and reaches the storage position. Following this, a motor (not shown) rotates, and the rear (arrow Y) of the cam member 26 as a movable member rotates.
movement in the opposite direction). The initial movement of the cam member 26 causes the lid 16 to close.

That is, in FIG. 2, when the cam member 26 moves slightly rearward, the link member 23, which is biased rearward by a coil spring (not shown), moves rearward to follow the cam member 26. do. Therefore, the arm member 19 supporting the lid 16 is pivoted clockwise in FIG. 2 about the pin 19a, resulting in the state shown in FIG. 6.

At this time, the pin 19b that pivotally connects the intermediate portion of the arm member 19 and one end portion of the link member 23 to each other slides along the arcuate guide portion 21c of the guide member 21, and
1c and the parallel guide portion 21b that continues therefrom, the pivoting of the arm member 19 is thereby restricted.

Since the rearward movement of the cam member 26 continues even after reaching the state shown in FIG. moves along the parallel guide portion 21b, and one arm member moves in parallel toward the rear. Therefore, the lid body 16
The back surface of the airtight member 18 is pressed against the airtight member 18.

After that, the cam member 26 is further moved rearward, whereby the pin 25b protruding from the container 25 is lowered by the action of the cam groove 26b of the cam member 26, and the container 25 is lowered together with the tray 13 loaded thereon. do. Therefore, the disc 29 is placed on the turntable 24,
In addition, the turntable 2 is mounted by a clamp mechanism (not shown).
Clamped against 4. In this state, the motor that was moving the cam member 26 stops, and the turntable 24
rotates and the disc begins to play.

When the performance is finished, follow the process in reverse to the above to release disc 2.
9 is returned outside the player housing 11 and collected. In this return process, the lid body 16 is moved in parallel in the forward direction 0 (direction of the arrow Y), completely opposite to the above-mentioned closing operation, and then rotated around the pin 19a in the opposite direction in FIG. It can be pivoted clockwise.

In the above-described embodiment, the cam member 26 is used as a movable member for opening and closing the lid 16, but the movement stroke sufficient to open and close the lid 6 is not sufficient. The lid body 16 is moved by other movable members having
It is also possible to have a configuration in which the opening and closing are performed. In that case, if the movement stroke of this movable member is relatively small and there is no need to move further rearward away from the link member 23 like the cam member 26, the front end of the movable member can be moved to the link member 23. It may also be pivoted to. In this case, the lid 16 as provided in the above embodiment
a coil sling (not shown) that biases the
becomes unnecessary. However, since it is necessary to match the movement stroke of the movable member and the stroke of the arm member 19 with high precision when the movable member is pivoted in this manner, a configuration in which a coil spring is interposed between the two as described above is preferable. is preferred.

Further, the link member 23 provided in the above embodiment is not necessarily necessary, and a configuration in which the front end of the cam member 26 is directly engaged with the arm member 19 is also possible. However, if you do this, the arm member 1
When the arm member 19 pivots, a state in which the arm member 19 and the front end portion of the cam member 26 rub against each other occurs. In the configuration of the above embodiment, the cam member 26 and one arm member are connected to the link member 2.
Since they are engaged by a circumferential couple via 3, rubbing between the two is prevented.

Effects of the Invention As detailed above, in the autoloading disc player according to the present invention, an airtight member is interposed between the lid and the edge abutting surface of the opening to be closed, and an airtight member is provided on the back surface of the lid. An arm member is provided which is connected at one end, and a guide part is provided which guides the arm member to determine a movement path of the lid body, and the guide member moves the other end of the arm member such that the other end of the arm member is movable. a pivot guide part that guides the arm member with a small amount of movement in a direction substantially perpendicular to the contact surface, and a parallel guide part that guides the intermediate part of the arm member parallel to the direction in which the other end is guided. ,
It has an arcuate guide part that is continuous with the parallel guide part and extends with the pivot center of the arm member as the center of curvature to guide the intermediate part, and the lid body abuts the contact surface of the edge of the opening. When moving between the abutting position and a position slightly separated from the abutting position, the arm member moves in parallel substantially perpendicularly to the abutting surface, and the lid body moves in parallel.

Therefore, the lid body is simply crimped against the airtight member, and the lid body and the airtight member do not rub against each other. This prevents wear of the airtight member and prevents the closure function of the lid body from being impaired over a long period of time. .

Further, in the autoloading disc player according to the present invention, the disc carrying portion is used to perform a protruding storage operation in order to transport the disc from outside the player to the playing position, and vice versa. The arm member is moved by a movable member,
A drive source that applies a driving force to the movable member is utilized as a drive source for the arm member and the lid. Therefore, it is not necessary to provide a dedicated drive source for opening and closing the lid, and the number of drive sources is kept small, thereby achieving reduction in cost and size of the player as a whole.

In addition, in this configuration, when the lid is closed, the pivoting of the arm member is restricted by the action of the pivot guide portion and the parallel guide portion, and the lid is in a locked state with respect to the player housing. There is no need to provide a special locking device, further reducing costs.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an autoloading disc player according to the present invention, FIG. 2 is an enlarged view of a part of the internal mechanism of the autoloading disc player shown in FIG.
The figure is a plan view including a partial cross section of the housing structure of the autoloading disc player shown in FIG. 1, and FIGS. 4 and 5 are sectional views taken along IV-IV and
Cross-sectional view, Fig. 4. Figs. 6 and 7 are explanatory diagrams of the operation of the auto-loading disc player shown in Figs. 1 and 2, and Figs. 8 and 9 are enlarged views of the main parts of the conventional auto-loading disc player. It is a diagram. Description of symbols of main parts 11... Player housing 12... Front panel 13... Tray 18... Airtight member 21... Guide member 24... Turntable 26... Cam member 29.30 ...Disk 33...Shell member 39.40...Power transformer 42.43, 44, 45.46...Circuit board 6...
Lid body 9... Arm member 3... Link member 5... Container 36... Shielding member

Claims (4)

[Claims] (1) A disk carrying section that can protrude and be freely stored through an opening provided in a player housing surrounding the playing means and that carries an information recording disk is moved by the operation of a movable member that is applied with a driving force and reciprocates in a predetermined direction. a disc transport mechanism that transports an information recording disc to be played to a performance position; a lid that closes the opening by abutting against a contact surface on the edge of the opening; an autoloading disc player having a lid moving mechanism brought into contact with the lid, an airtight member being interposed between the lid and the abutting surface, and the lid moving mechanism being brought into contact with the back surface of the lid. an arm member connected at one end; a pivot guide portion for guiding the other end of the arm member so as to be pivotable and movable to a certain extent in a direction substantially perpendicular to the contact surface; and the other end portion a parallel guide part that is parallel to the direction in which the arm member is guided and guides the middle part of the arm member; and an arc-shaped part that is continuous with the parallel guide part and extends with the pivot center of the arm member as a center of curvature to guide the middle part. and a guide member having a guide portion, and the arm member is caused to move in parallel and pivot in response to movement of the movable member. (2) A link member is pivotally attached to the intermediate portion at one end and the other end is guided along the moving direction of the movable member, and the movable member is attached to the other end of the link member. The autoloading disc player of claim 1, wherein the autoloading disc player is engaged. (3) The autoloading disc player according to claim 1 or 2, further comprising a biasing means for biasing the lid toward a closed position. (4) Any one of claims 1 to 3, wherein the arm member protrudes in a direction away from the back surface of the lid body and then curves in a direction toward the front surface of the lid body.
Autoloading disc player as described.