JP2582902Y2 - Door opening and closing mechanism for optical disc players - Google Patents

Description

[Detailed description of the invention]

[0001]

This invention relates to a disc player which draws a disc into a casing by a loading tray and plays the disc, or selects and plays an arbitrary disc which is housed vertically in a magazine mounted in the casing. The present invention relates to a multi-disc player, and more particularly to a door opening / closing mechanism for covering a front surface of a loading tray or a magazine.

[0002]

2. Description of the Related Art There is known a multi-disc player in which a magazine containing a plurality of discs is mounted in a housing and an arbitrary disc in the magazine is selected and played.

In such an optical disc player having a door covering a magazine, a manual or automatic opening / closing mechanism is used as a door opening / closing mechanism.

[0004] There is also known a disc player which plays a disc by pulling the disc into a housing by a loading tray. The door of such a conventional disk footer is biased by a spring, and is pushed open by a loading tray, and is closed following the loading tray.

[0005]

The above-mentioned conventional door opening / closing mechanism of an optical disk player which is manually operated has a disadvantage that the manufacturing cost is low but the image as a high-quality product is impaired.

[0006] Further, in a device that automatically opens and closes a door, if the door is left open during a performance, the door opening and closing mechanism may be broken if the door is accidentally closed by hand. Inside the door was closed.

When a disc is exchanged inside such an optical disc player, the progress of the exchange and the order of the disc exchange cannot be confirmed because the exchange state cannot be seen, so that the user has sufficient satisfaction. There was a disadvantage that it could not be done.

Further, the door which is pushed open by the loading tray and closed following the loading tray has a drawback that vibration and noise are generated by sliding between the loading tray and the door.

The present invention has been made in view of the above points, and a purpose thereof is to automatically open and close a door and to keep a door open at the time of disk replacement, and to replace a disk. The object of the present invention is to provide a door opening / closing mechanism of an optical disk player which allows the user to view the door.

[0010]

The door opening / closing mechanism of the optical disk player according to the present invention draws an arbitrary disk tray, which is housed vertically in a magazine, into a loading chassis by a loading arm and lowers the loading chassis. In a multi-disc player for playing a disc placed on a disc tray, a lever mechanism that rotatably supports a door that covers the front surface of a magazine on a chassis and has a pin that engages with a guide groove of the door is provided upright. Is rotatably supported on the chassis, and a locking member operated by a solenoid is provided so that the lever mechanism can be locked at the door open position and the closed position, and a loading chassis elevating plate for raising and lowering the loading chassis is provided on the lever mechanism. It is configured to push the projection provided to drive from the door closed position to the door open position. One in which the.

Further, in the door opening and closing mechanism of the optical disk player, the magazine is unlocked by the movement of the loading chassis lifting plate.

Further, the door opening / closing mechanism of the optical disk player according to the present invention places the disk on a loading tray which enters and exits from the housing, pulls the disk into the housing, and clamps the disk thus drawn into the housing on a turntable. In a disk player that performs a playing operation, a door that covers the front surface of a loading tray is rotatably supported by a chassis, and a lever mechanism having a pin that is engaged with a guide groove of the door is rotatably supported by the chassis. A locking member operated by a solenoid is provided so that the lever mechanism can be locked at the door open position and the closed position, and the slider pushes a projection provided on the lever mechanism to drive the door mechanism from the door closed position to the door open position. It is composed.

[0013]

The loading chassis elevating plate is generally one that raises and lowers the loading chassis by means of a cam groove. The loading chassis can be brought into a stationary state during a part of the stroke. When the intermediate lever is rotated by the loading chassis elevating plate using the stroke of the portion, the door opening / closing lever rotates following the opening lever to open the door.

When the intermediate lever is locked at the pivot position by the locking member by spring elasticity, the door is held in the open state. At that time, even if the door is closed by hand, only the spring hung between the intermediate lever and the door opening / closing lever bends, and the mechanism is not broken. In this state, the state of disk replacement can be seen.

When closing the door, the loading chassis elevating plate is brought close to the projection of the intermediate lever, the locking state of the intermediate lever of the locking member is released by the solenoid, and the loading chassis elevating plate is moved in the door closing direction. The intermediate lever follows the loading chassis elevating plate by the resilience of the spring and is rotated, and the door is closed quietly.

A driving mechanism for releasing the magazine lock is provided by providing a relief at a contact portion of the loading chassis elevating plate with the protrusion of the intermediate lever, moving the door further after opening the door, and unlocking the magazine by the movement. And the magazine is always unlocked with the door open.

[0017]

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view showing a loading mechanism of a multi-disc player according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a magazine having a shelf for accommodating six disk trays 2, 2,. Magazine 1 is disk 3
Are accommodated in the disc tray 2 on which is mounted, and is mounted at the position shown in the figure. The chassis is provided with a case for mounting the magazine 1 and a lock mechanism shown in FIG.

Reference numeral 4 denotes a loading tray used when playing only one disc not in the magazine 1,
Only one disk can be stored, and is driven by a drive mechanism (not shown) between a position inside the illustrated housing and a position protruding from the housing.

A loading chassis left guide 6b and a loading chassis right guide 6c are fastened to the loading chassis upper plate 6a to form a loading chassis. Such a loading chassis is supported by the chassis via a pandagraph mechanism 7, 7 so as to be vertically movable.

A pin 6d is provided upright on the loading chassis left guide 6b, and the pin 6d is engaged with the cam groove 8a of the loading chassis lifting plate 8. The loading chassis elevating plate 8 is supported by the side chassis 5 so as to be slidable in the front-rear direction, and is sent in the front-rear direction by a gear (not shown) meshing with the rack 8b.

The loading chassis is driven up and down by the movement of the loading chassis elevating plate 8, and the positions corresponding to the respective shelves of the magazine 1 and the shelves of the loading tray 4 are provided with holes 8c, 8c.
Is detected when the light of the photointerrupter passes through.

The loading arm 9 is engaged with the guide groove of the loading chassis left guide 6b, is movable in the front-rear direction along the guide groove, and is movable up and down together with the loading chassis. The rod 10 that engages with the notch of the loading arm 9 is supported by the side chassis 5 so as to be movable in the front-rear direction, and is driven in the front-rear direction by a driving mechanism that meshes with a rack 10a integrated therewith.

The loading arm 9 further engages with the notch of the disc tray 2 and is driven in the front-rear direction by the rod 10 to move the disc tray 2 to the magazine 1.
Or, it is pulled out from the loading tray 4 into the groove of the loading chassis.

The engaging piece 11 is supported by the side chassis 5 so as to be slidable in the vertical direction, and is urged upward by a coil spring (not shown). The engaging piece 11 normally comes into contact with a stopper (not shown), and in that state, has a recess 11a corresponding to the height position of each disk tray. However, the space above the engaging piece 11 corresponds to the height of the uppermost disk tray of the magazine 1, and the space below the engaging piece 11 corresponds to the height of the disc tray of the loading tray 4.

The locking piece 12 is slidably supported by the loading chassis left guide 6b, is urged by a coil spring, and is normally pressed against the step of the loading chassis left guide 6b. In this state, the locking piece 12 is recessed 11a.
And the engaging piece 11 is stationary even when the loading chassis moves up and down. When the loading arm 9 pulls out the disc tray 2 into the loading chassis, the loading arm 9 pushes the locking piece 12 to project into the recess 11 a of the engaging piece 11.

Next, when the loading chassis is lowered to the playing position, the loading chassis places the disc on the disc tray on a turntable of a spindle motor (not shown), and the clamper 6e floatingly supported by the loading chassis upper plate 6a is moved. The performance is performed by clamping the disc to the turntable.

When the disk is returned to the magazine after the performance is completed, the loading chassis is raised, and the engaging pieces 11 are also raised. The engagement piece 11 activates a microswitch (not shown) at its raised position to detect the rising end point of the loading chassis.

Immediately after the rising end of the loading chassis is detected, the photo interrupter detects that light passes through the holes 8c of the loading chassis lifting plate 8, and the loading chassis lifting plate 8 stops. Is done.

When the loading chassis lifting plate 8 stops, the disc tray in the loading chassis is at the original storage height in the magazine and the loading arm 9
Moves and returns the disc tray to its original position in the magazine.

When playing another disc, the loading arm 9 is moved to a position in the magazine, and the loading chassis is moved up and down to engage with the disc tray of the next disc to be played. , Pull the disc out of the magazine.

FIG. 2 shows a magazine lock mechanism and a door opening / closing mechanism. The illustrated magazine case upper plate 13 slidably supports the pushing member 16 between the chassis upper plate (not shown) and the chassis upper plate (not shown), and rotatably supports the lock member 14.

The pushing member 16 is provided with a hook 16a for locking the rear part of the magazine 1, and is urged forward by a coil spring 17. Also, the front projection 16b
Abuts against the cam surface 14a of the lock member 14.

The locking member 14 has a recess 1 a of the magazine 1.
And a projection 14c for pressing the lock release button 1b are provided, and are urged counterclockwise by the coil spring 14.

A shaft 18a is erected on a bracket 18 fastened to the chassis, and an intermediate lever 19 is rotatably supported on the shaft 18a. The door opening / closing lever 21 is the intermediate lever 1
9 is rotatably supported coaxially.

The intermediate lever 19 is urged clockwise by a torsion coil spring 20, and a coil spring 22 hung between the intermediate lever 19 and the door opening / closing lever 21 causes the end face 21 a of the door opening / closing lever 21 to move to the intermediate lever. 19 is pressed against.

The door 26 has a shaft 26a provided on its side.
Is rotatably supported by the housing around the pivot shaft. A pin 21b that engages with a guide groove 26b provided in the arm is provided upright on the door opening / closing lever 21. The projection 19a provided on the intermediate lever 19 contacts the end surface 8d of the loading chassis elevating plate 8.

The locking member 23 is rotatably supported by the bracket 18 and is urged counterclockwise by a coil spring 24. Solenoid 2 attached to bracket 18
Numeral 5 rotates the locking member 23 clockwise against the elasticity of the coil spring 24 by energization. End surface 23 of locking member 23
a locks the end face 19b of the intermediate lever 19.

In the above configuration, when the magazine 1 is pushed into the magazine case, the magazine hooks the hook 16 a of the pushing member 16 and moves the pushing member 16 backward against the elasticity of the coil spring 17. Then, the lock member 14 is rotated counterclockwise by the elastic force of the coil spring 14 so that the cam surface 14a follows the protrusion 16b, the hook 14b locks the magazine 1, and the protrusion 14c locks the disc tray in the magazine. Is released, and the magazine 1 is set in the mounted state.

When the loading chassis elevating plate moves to the forefront, its upper front end pushes the inner inclined surface 14d of the lock member 14 to rotate the lock member 14 to unlock the magazine. Then, the pushing member 16 pushes the magazine 1 out of the case by the elastic force of the coil spring 17.

When the door 26 is open as shown in the figure, the intermediate lever 19 and the door opening / closing lever 21 are rotating counterclockwise, and the end surface 23a of the locking member 23 is in contact with the end surface 19b of the intermediate lever 19. It is locked. In this state, even if the loading chassis elevating plate 8 is moved backward, the door is held in the open state, and the disk can be replaced. In that case, the status of disk replacement is magazine 1
Through the transparent plate 1c. When the door 26 is closed by hand, the door opening / closing lever 21 rotates clockwise against the elasticity of the coil spring 22, and when the hand is released, the coil spring 2
The door 26 is opened by the elasticity of 2.

When the door 26 is closed by the opening / closing mechanism,
When the solenoid 25 is energized, the locking member 23 rotates clockwise, and the locked state of the intermediate lever 19 is released. The projection 19a is pressed against the end surface 8d of the loading chassis elevating plate 8 by the elastic force of the torsion coil spring 20, the intermediate lever 19 rotates clockwise following the retraction of the loading chassis elevating plate 8, and the door 26 is closed quietly. Can be

When the door 26 is opened, the loading lever 8 is advanced and the projection 19a is pushed by the end face 8d to rotate the intermediate lever 19 counterclockwise. With the door 26 opened, the locking member 23 rotates counterclockwise by the elastic force of the coil spring 24 to lock the intermediate lever 19. Since the relief portion is provided on the end face 8d of the loading chassis elevating plate 8, the loading chassis elevating plate 8 can be further advanced to unlock the magazine 1.

In the embodiment, the multi-disc player for selecting and playing a disc in the magazine has been described.
A door disposed on the front of the loading tray of a disc player playing only the disc placed on the loading tray can be opened and closed by a mechanism similar to the above by opening and closing the intermediate lever with the slider.

In this case, the door is kept open when the loading tray enters and exits the housing, so that there is no sliding between the loading tray and the door, and no vibration or noise is generated.

[0045]

According to the door opening and closing mechanism of the optical disk player of the present invention, the door is automatically opened and closed by the loading chassis lifting plate, and the driving mechanism is simplified.

Further, it is possible to perform disk exchange while the door is open, so that the state of disk exchange can be checked.

Further, if the magazine is released by the loading chassis lifting plate, the driving mechanism for releasing the magazine is simplified.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a door opening / closing mechanism of an optical disc player according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a main part of the embodiment.

[Explanation of symbols]

 1 Magazine 2 Disc Tray 3 Disc 4 Loading Tray 5 Side Chassis 6a Loading Chassis Upper Plate 6b Loading Chassis Left Guide 6c Loading Chassis Right Guide 6e Clamper 7 Panda Graph Mechanism 8 Loading Chassis Lifting Plate 9 Loading Arm 10 Rod 11 Engagement Piece 12 Engagement Stopper 13 Magazine case upper plate 14 Lock member 16 Push-out member 18 Bracket 19 Intermediate lever 21 Door opening / closing lever 23 Locking member 25 Solenoid 26 Door

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G11B 17/22-17/30 G11B 17/04

Claims (3)

(57) [Scope of request for utility model registration] An arbitrary disc tray (2) housed vertically in a magazine (1) is drawn into a loading chassis by a loading arm (9), and the loading chassis is lowered to be placed on the disc tray. In a multi-disc player for playing a disc (3), a door (26) for covering a front surface of a magazine is rotatably supported by a chassis, and a guide groove (26) for the door is provided.
b) A lever mechanism (19, 21) having a pin (21b) engaged therewith is rotatably supported on a chassis, and a locking member (23) operated by a solenoid (25) is connected to the lever mechanism. A projection (1) provided on the lever mechanism is provided with a loading chassis elevating plate (8) provided so as to be able to be locked at a door open position and a closed position and elevating the loading chassis.
9a) A door opening / closing mechanism of an optical disc player configured to push and drive the door from a door closed position to a door open position. 2. The magazine is unlocked by movement of the loading chassis lifting plate.
Door opening and closing mechanism for optical disc players. 3. A disc player which places a disc on a loading tray coming in and out of the casing, pulls the disc into the casing, clamps the disc loaded in the casing on a turntable, and plays the disc. A door that covers the front surface is rotatably supported on the chassis, a lever mechanism having a pin that engages with a guide groove of the door is supported rotatably on the chassis, and a locking member operated by a solenoid is provided on the chassis. A door opening / closing mechanism for an optical disc player, wherein a lever mechanism is provided so as to be lockable at a door open position and a closed position, and a slider pushes a projection provided on the lever mechanism to drive the door from the door closed position to the door open position.