JPH0627020Y2 - Disk player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of Invention] (Field of Industrial Use) The present invention relates to a disc player, and more particularly to a disc player capable of selectively reproducing a plurality of discs in sequence.

(Prior Art) For example, as a disc player for reproducing a compact disc (hereinafter referred to as a CD) or the like, JP-A-61-2618.
There is one disclosed in Japanese Patent No. 53.

In this disc player, a magazine in which six trays for supporting discs are provided so that they can be independently loaded and unloaded in a stacked state is attached to the player body, and the tray is selectively taken out from the magazine in the player body. In order to reproduce the above disc, an elevating frame capable of ascending and descending is provided in the player main body, and in addition to the loading and unloading mechanism for loading and unloading the tray in the magazine,
A disc reproducing means such as a clamp mechanism for picking up a disc from a tray taken out and pressing it against a turntable, and a pickup mechanism for reading a signal of the disc is provided.

(Problems to be solved by the invention) By the way, in the disc player of the above-mentioned publication, there is provided a loading / unloading mechanism for loading / unloading the tray in the magazine, and a clamping mechanism for lifting the disc from the removed tray and pressing it on the turntable. It is driven by one motor, but even though both mechanisms act independently in sequence, the motor always drives both mechanisms and wastes some of each mechanism. It was unreasonable because the motor was in a state of being put on it, and the motor had an unnecessary load.

The present invention has been made in view of such a point, and selects a plurality of discs by using a magazine having a plurality of trays for supporting the discs, as shown in Japanese Patent Laid-Open No. 61-261853. In a disc player that sequentially and sequentially reproduces, a loading / unloading mechanism for loading / unloading a tray in a magazine and a clamping mechanism for loading a disc on the tray on a turntable are sequentially driven independently by one motor. The purpose is to prevent unnecessary load from being applied to the motor.

[Constitution of device]

(Means for Solving Problems) According to the present invention, a magazine m in which a plurality of trays t for supporting the discs d are provided in a stacked state so that they can be independently taken in and out, is mounted in the player main body 1, and in this player main body 1, , The reproducing means 35, 36, 37 for reproducing the disk d and the magazine m are relatively moved up and down to select an arbitrary tray t, and the selected tray t is reproduced from the magazine m by the ejecting mechanism 6.
The present invention relates to a disc player for playing a disc d on the tray t by loading it to a turntable 35 by a clamp mechanism 36 of a reproducing means after the disc is taken out to 5, 36, 37. And above clamp mechanism 36
The driving member 66 for driving the
A first transmission member 67 pivotally supported to transmit the driving force of 66, and a second transmission member 68 pivotally supported to transmit the driving force of the driving member 66 to the clamp mechanism 36. Equipped with
The first transmission member 67 and the second transmission member 68 are formed with engagement grooves 67a, 68a whose front ends face each other at their predetermined rotational positions in their respective radial directions, and the drive member 66 is provided with the first transmission member 66. At a predetermined rotational position of the transmission member 67 and the second transmission member 68, one of the engagement grooves 67a, 68a is transferred to the other and engages with each engagement groove 67a, 68a to engage the first transmission member 67, Second
The drive projection 66a for sequentially driving the transmission member 68 is formed.

(Operation) The disc player of the present invention is provided with the drive protrusion 66 of the drive member 66.
a is the first transmission member 67 that transmits the driving force to the loading / unloading mechanism 6.
Second engaging groove 67a and second driving force transmitted to the clamp mechanism 36
The engaging groove 68a of the transmission member 68 is sequentially engaged with each other to drive them independently, so that a useless load is not applied to the motor, and the driving force of the motor can be reasonably utilized. This makes it possible to use inexpensive motors.

(Embodiment) An embodiment of the disc player of the present invention will be described with reference to the drawings.

In FIG. 1 and FIG. 2, 1 is a player main body, and a pair of upper and lower chassis 2 and 3 are provided inside the player main body 1 (the arrow U in the drawing is the upper side, the opposite side is the lower side, and the subsequent directionality). Includes the front of the illustrated arrow F, the rear of the opposite side, the left side of the illustrated arrow L, the right side of the opposite side,
All are based on this player body 1),
Mounting parts 4 and 5 are formed in two steps between the front parts of the upper and lower chassis 2 and 3, and openings (not shown) formed on the front surface of the player body 1 for the upper and lower mounting parts 4 and 5, respectively. The magazine m described below can be inserted and pushed in, and the magazine m inserted to a predetermined position (the position shown in the drawing) is fixed to that position by a lock mechanism (not shown) in each of the mounting portions 4 and 5. In addition, when the magazine m is taken out from this fixed state, the fixing by the lock mechanism is released and the ejecting mechanism (not shown) pushes it back to the opening.

The lock mechanism and the eject mechanism are provided independently of the upper and lower mounting portions 4 and 5.

Here, the magazine m is, as shown in FIG.
Similar to the one disclosed in Japanese Patent Laid-Open No. 1-261853, six trays t are supported in a stacked state so as to be rotatable around a fulcrum m1. The tray t is mounted on the mounting portion 4 of the player main body 1. In the state of being properly attached to the magazine 5, it can be taken out from the left side of the magazine m to the rear side by rotating counterclockwise in plan view about the fulcrum m1 from the state of being stacked vertically in the magazine m. , The compact disc d (hereinafter referred to as the disc d) is supported on the tray t, and is rotated clockwise about the fulcrum m1 in a plan view, so that the disc d is rotated.
At the same time, it can be returned to the magazine m.

Incidentally, when the disc d is supported on the tray t of the magazine m, the signal recording surface is turned upward, which is the reverse of the usual case.

Also, with the magazine m mounted in the mounting portions 4 and 5, the distance between the lowest tray t in the upper magazine m and the highest tray t in the lower magazine m is the same.
The mounting portions 4 and 5 are formed so as to be an integral multiple of the interval between the inner trays t, here three times.

Then, in the player main body 1, Japanese Patent Laid-Open No. 61-2618
Similar to the one shown in Japanese Patent No. 53, the L-shaped lever 6 that constitutes the loading / unloading mechanism provided in the lifting player 11 described later.
Is rotated counterclockwise in plan view about the fulcrum m1 of the tray t in a state in which the tray is at the same height as the tray t at the right rear portion of the magazine m, and the tray t is moved at one end 6a thereof. The magazine m can be pushed out from the left side to the rear side, and conversely from this state, the L-shaped lever 6 is rotated clockwise about the fulcrum m1 of the tray t in a plan view, so that the other side is rotated. At the end 6b, the tray t can be pushed back into the magazine m.

Also, as shown in FIG. 1, the upper and lower chassis 2, 3
An elevating frame 11 is provided between the rear parts so as to be able to ascend and descend across the upper and lower mounting parts 4, 5. This lifting frame 11
As shown in FIG. 3, a support frame 14 is provided between the upper and lower support plates 12 and 13.
The lower support plate 13 is supported by a guide shaft 15 provided between the left and right portions of the upper and lower chassis 2 and 3 via a slider (not shown) so that the support plate 13 can move up and down. By supporting the support plate 13 in a guide groove 16 formed in a side plate (not shown) provided between the right and left portions of the upper and lower chassis 2 and 3 so as to be vertically movable via rollers 17, movement in the front-rear direction and the left-right direction is restricted. It is in the state of being

Then, as shown in FIGS. 1 and 2, the elevating mechanism of the elevating frame 11 includes a supporting plate 13 below the elevating frame 11.
Attach three nut bodies 21 to the periphery of the
While screwing the screw shaft 22 into each,
These three screw shafts 22 are attached to the upper and lower chassis 2,
The lifting frame 11 is lifted and lowered by being supported between three and rotating the three screw shafts 22. In order to maintain the lifting frame 11 in a horizontal state, the three screw shafts 22 are synchronized. It is rotating.

That is, the gear-shaped pulleys 23 are attached to the upper ends of the three screw shafts 22 projecting on the upper chassis 2, and the gear-shaped pulleys 24 are attached to one location on the chassis 2 so that the pulleys 23 , 24 are wound around the endless timing belt 25 to synchronize the three screw shafts 22, and the pulley 23 located at the rear is integrally provided with a small-diameter gear 26. Driven by a motor 32 provided on the upper chassis 2 via a large-diameter gear 27, a small-diameter gear 28, a large-diameter pulley 29 integrated therewith, an endless belt 30, and a small-diameter pulley 31 provided in By doing so, the three screw shafts 22 are rotated.

Further, the elevating frame 11 is provided with a turntable 35 for fitting and rotating the disc d, a clamp mechanism 36 for pressing the disc d on the turntable 35, and a reproducing mechanism such as a pickup mechanism 37 for reading the signal of the disc d. In addition, a holding mechanism 38 and a magazine m for horizontally holding and stabilizing the disc d that is being raised and lowered by the clamp mechanism 36.
L-shaped lever 6 shown in FIG.
Is provided.

As shown in FIG. 3, the turntable 35 is attached to the shaft of the motor 41 attached to the upper support plate 12 of the elevating frame 11 to rotate, and the disc d is fitted to the lower portion. There is.

As shown in FIG. 3, the clamp mechanism 36 pivotally supports an arm 46 on a lower support plate 13 of the elevating frame 11 via a shaft 45 so that the arm 46 can move upward and downward by a spring 47. The clamper 48 for the turntable 35 is rotatably and movably held at the tip end of the arm 46 via the holding frame 49, and the engaging portion 46a formed in the middle of the arm 46 is urged to the arm 46. It engages with a cam 50 that moves in the left-right direction along the support plate 13, and as shown in the figure, the cam 50 moves to the left and the arm 46 is forcibly pushed down. The clamper 48 descends, and from this state, the cam 50 moves to the right and the arm 46 rises by the spring 47.
48 is pressure-bonded, and at this time, the clamper 48 picks up the disc d from the tray t and fits it into the turntable 35, and clamps the disc d between the turntable 35 and the turntable 35.

In the pickup mechanism 37, as shown in FIG. 2, a laser pickup 56 is movably provided in the left-right direction on a support plate 12 on the upper side of the elevating frame 11 via a guide shaft 55.
A motor provided with this laser pickup 56 on the support plate 12.
It is designed to move along the guide shaft 55 via a worm 58, a worm wheel 59, a rack and a pinion (not shown), etc. by a 57.
56 is a disk d facing the upper surface of the disk d.
Move in the radial direction.

As shown in FIG. 3, the presser mechanism 38 has a lifting frame.
The projecting portion 14a formed on the support frame 14 of 11 has an inclined long hole 61a of the holding plate 61.
, And press the pressing plate 61 to the left with a spring 62,
Further, the holding plate 61 is adapted to be driven by the cam 50 of the clamp mechanism 36, and as shown in the drawing, the holding plate 61 is also moved leftward by the spring 62 in a state where the cam 50 is moved leftward. In this state, the pressing plate 61 descends due to the engagement between the protrusion 14a and the slanted long hole 61a, and when the cam 50 moves to the right from this state, the pressing plate 61 is also forced by the cam 50 to the right. In this state, the projection 14a and the slanted long hole 61a are engaged with each other to raise the pressing plate 61, and the lifting plate 61 moves up and down in conjunction with the lifting and lowering of the clamper 48 of the clamp mechanism 36. 61 makes contact with the upper surface of the unstable disk d which is being raised or lowered by the freely movable clamper 48, stabilizes the disk d horizontally, and allows the clamper 48 to stably move the disk d up and down. Is.

The L-shaped lever 6 shown in FIG. 4 is located in front of the reproducing means such as the turntable 35, the clamp mechanism 36 and the pickup mechanism 37, and is a supporting plate below the elevating frame 11.
It is provided at the front part on the right side of 13 and has a mounting part 4 for the magazine m.
5 is projected to the right rear part.

Then, the L-shaped lever 6 and the cam 50 of the clamp mechanism 36
Is the same motor 65 provided on the support frame 14 of the lifting frame 11.
Through the drive gear 66 as the drive member and the first transmission arm 67 as the first transmission member or the second transmission arm 68 as the second transmission member shown in FIGS. And are driven independently in a predetermined order.

That is, as shown in FIGS. 5 to 7, the L-shaped lever 6 moves via the shafts 71 and 72 into a pair of arcuate slots 13a and 13b formed in the support plate 13 below the elevating frame 11. By freely engaging with each other, it is rotatably provided around the center of the arcuate elongated holes 13a, 13b, that is, the fulcrum m1 of the magazine m when properly mounted on the mounting portions 4, 5 of the player main body 1,
The cam 50 of the clamp mechanism 36 is engaged with the shafts 73, 74 having the pair of long grooves 50a, 50b planted in the support plate 13 so as to be movable in the left-right direction, and the drive gear 66 is supported by the support plate 13 via the shaft 75. The first transmission arm 67 is rotatably supported by the support plate 13, and the first transmission arm 67 is rotatably supported by the support plate 13 via a shaft 76.
Are rotatably supported by the support plate 13 via a shaft 77, and between these, the drive projection 66a formed on the side surface of the drive gear 66 is radially supported by the first transmission arm 67. The engagement groove 67a formed along the first transmission arm 68 and the engagement groove 68a formed along the radial direction of the second transmission arm 68 are sequentially engaged with each other.
The transmission protrusion 67b formed on the transmission arm 67 of the second engagement arm engages with the engagement groove 6c formed on the L-shaped lever 6,
The transmission protrusion 68b formed on the 68 is engaged with the engagement elongated hole 50c formed on the cam 50.

The drive gear 66 is rotated by the motor 65 via a small-diameter gear 78, etc., and the drive gear 66 is viewed in plan from the state shown in FIG. 5 to the state shown in FIG. When rotated clockwise (clockwise in FIGS. 5 to 7), the drive protrusion 66a of the drive gear 66 engages with the engagement groove 67a of the first transmission arm 67, and by this engagement, The first transmission arm 67 rotates clockwise in plan view (counterclockwise in FIGS. 5 to 7), and at this time, the engagement between the transmission protrusion 67b of the first transmission arm 67 and the L-shaped lever 6 is increased. The engagement of the dowel groove 6c causes the L-shaped lever 6 to rotate counterclockwise in plan view (clockwise in FIGS. 5 to 7), whereby the one end 6a of the L-shaped lever 6 is moved to the tray t. Is pushed from the left side of the magazine m to the rear side.

Then, from the state of FIG. 6 to the state of FIG. 7,
Further, when the drive gear 66 is rotated counterclockwise in plan view (clockwise in FIGS. 5 to 7), the drive protrusion 66 a of the drive gear 66 comes out of the engagement groove 67 a of the first transmission arm 67. Out,
The tip of the engaging groove 67a of the first transmission arm 67 is transferred to and engaged with the engaging groove 68a of the second transmission arm 68, the tip of which is opposed to the tip of the engaging groove 67a. The arm 68 is counterclockwise in plan view (counterclockwise in FIGS. 5 to 7).
To the transmission protrusion 68 of the second transmission arm 68.
The cam 50 is moved to the right (to the left in FIGS. 5 to 7) by the engagement of the engaging long hole 50c of the cam 50, and the clamper 48 shown in FIG. Lift the disk d from t and fit it on the turntable 35.
And pinch it with the turntable 35.

When the drive gear 66 is rotated in the opposite clockwise direction in plan view (counterclockwise in FIGS. 5 to 7) from the state shown in FIG. 7 to the state shown in FIG. Drive projection 66
By the engagement of a with the engaging groove 68a of the second transmission arm 68,
Of the transmission arm 68 is counterclockwise in plan view (see FIGS. 5 to 7).
The cam 50 is rotated clockwise (in the figure), and at this time, the cam 50 is moved to the left (see FIGS. 5 to 5) by the engagement of the transmission projection 68b of the second transmission arm 68 and the engagement long hole 50c of the cam 50. 7), the clamper 48 shown in FIG. 3 supports the disc d, descends from the turntable 35, and lowers the disc d onto the tray t. And the drive projection 66a of the drive gear 66 causes the second transmission arm 68 to
Is disengaged from the engagement groove 68a of the second transmission arm 68, and the tip end portion of the engagement groove 68a of the second transmission arm 68 is transferred to and engaged with the engagement groove 67a of the first transmission arm 67 having the tip end portion opposed thereto.

Then, from the state of FIG. 6 to the state of FIG. 5,
Further, when the drive gear 66 is rotated clockwise in plan view (counterclockwise in FIGS. 5 to 7), the engagement between the drive protrusion 66a of the drive gear 66 and the engagement groove 67a of the first transmission arm 67 is increased. As a result, the first transmission arm 67 rotates counterclockwise in plan view (clockwise in FIGS. 5 to 7), and at this time, the first transmission arm 67 and the transmission protrusion 67b of the first transmission arm 67 are L-shaped. Engagement groove 6c of lever 6
The L-shaped lever 6 is rotated clockwise in a plan view (counterclockwise in FIGS. 5 to 7) by the engagement of the L-shaped lever 6 and the other end 6b of the L-shaped lever 6 causes the tray t to magazine. m
Perform an operation to push it back in.

Next, the overall operation will be described.

A magazine m supporting a disc d on an internal tray t,
According to the triangular display m2 indicating the upper surface direction and the insertion direction, the mounting portion 4 of the player main body 1 is directed toward a predetermined direction.
Attach to 5.

In this state, when the tray t supporting the disc d to be reproduced is designated by the operation, the three screw shafts 22 are rotated by the motor 32 and the elevating frame 11 is moved up and down toward the designated tray t. When the L-shaped lever 6 shown in FIG. 4 reaches the same height as the tray t, the elevating frame 11 stops.

In addition, in FIG. 1, regarding the lifting of the lifting frame 11,
The lower support plate 13, the state shown by the solid line is the lowest state, the state shown by the chain line is the highest state, and in the highest state, it is on the upper support plate 12. The motor 41 of the turntable 35, the laser pickup 56 of the pickup mechanism 37, the motor 57, and the like project into the opening 2a of the upper chassis 2 shown in FIG. 2 in order to avoid interference with them. Screw shaft 22, pulley 2
3, 24, timing belt 25, etc. are arranged in the periphery.

When the lifting frame 11 stops, the motor 65 causes the L-shaped lever 6 to rotate counterclockwise in plan view about the fulcrum m1 of the tray t via the drive gear 66 and the first transmission arm 67. One of the ends 6a pushes out the designated tray t from the left side of the magazine m to the rear side of the elevating frame.
The cam 50 of the clamp mechanism 36 is moved to the right by the same motor 65 from the drive gear 66 via the second transmission arm 68 by inserting it between the support plate 13 on the lower side of 11 and the support frame 14. Then, the arm 46 rises by the spring 47, and the clamper 48 moves the tray t.
, Lift the disk d from and fit it on the turntable 35,
The disc d is held between the turntable 35 and the disc.

In addition, together with the clamper 48 of the clamp mechanism 36, the holding mechanism 38
The holding plate 61 of the clamp 48 rises.
In the state where the disk d is sandwiched between the turntable 35 and the disk d, the disk d is separated from the disk d so as not to hinder the rotation of the disk d.

When the clamper 48 holds the disc d between the turntable 35 and the turntable 35, the turntable 35 is rotated by the motor 41 together with the clamper 48 and the disc d, and the laser pickup 56 of the pickup mechanism 37 is kept waiting by the motor 57. The upper surface of the disk d is moved from the fixed position in the radial direction of the disk d, and the signal of the disk d is reproduced.

Then, when the reproduction of the disc d is completed, the turntable 35 is stopped and the laser pickup 56 of the pickup mechanism 37 is returned to the fixed position in the standby state. The cam 50 of the clamp mechanism 36 moves to the left via the transmission arm 68, forcibly lowers the arm 46, and the clamper 48 supports and lowers the disc d to lower the disc d onto the tray t. After that, by the same motor 65, the L-shaped lever 6 is rotated clockwise from the drive gear 66 through the first transmission arm 67 in the plan view clockwise around the fulcrum m1 of the tray t, and the other end portion is rotated. 6b pushes tray t back into magazine m.

Then, when the tray t supporting the disc d to be reproduced next is designated, the tray t is taken out from the magazine m and the disc d is reproduced by the same operation. magazine on t
Return to.

Then, in such an operation, the discs d of the magazine m of the upper and lower mounting portions 4, 5 can be freely reproduced, and the discs d of the magazine m of the one mounting portion 4, 5 can be reproduced. The magazine m of the other mounting portions 4 and 5 can be freely removed from the mounting portions 4 and 5 during reproduction.

In this embodiment, the reproducing means moves up and down with respect to the magazine m, but the present invention is not limited to this, and the magasin m can also be moved up and down with respect to the reproducing means.

[Effect of device]

As described above, according to the present invention, in a disc player that selectively reproduces a plurality of discs using a magazine having a plurality of trays for supporting the discs,
The drive projection of the drive member sequentially engages with the engagement groove of the first transmission member and the engagement groove of the second transmission member to drive them independently, thereby, in the magazine. The loading and unloading of the tray and the loading of the disk on the removed tray to the turntable are performed independently in order, so that the motor is not overwhelmed and the motor drive force can be used rationally. Therefore, it becomes possible to use an inexpensive motor.

[Brief description of drawings]

FIG. 1 shows an embodiment of the disc player according to the present invention.
FIG. 4 is a side view thereof, FIG. 2 is a plan view thereof, FIG. 3 is a rear view of an elevating frame on which the reproducing means is mounted, and FIG. 4 is a perspective view showing a relationship between a magazine and a tray loading / unloading mechanism. FIG. 7 to FIG. 7 are bottom views of the elevating frame showing the drive system of the loading / unloading mechanism and the clamp mechanism, and show different states. d ... disc, t ... tray, m ... magazine, 1 ...
... Player body, 6 ... L-shaped lever that constitutes the loading / unloading mechanism, 35 ... Turntable that constitutes playback means, 36 ...
Clamping mechanism constituting reproducing means, 37 ... Pickup mechanism constituting reproducing means, 66 ... Drive gear as driving member, 66a ... Driving protrusion, 67 ... First transmission as first transmitting member Arm, 67a ... Engagement groove, 68 ... Second transmission arm as second transmission member, 68a ... Engagement groove.

Claims (1)

[Scope of utility model registration request] 1. A magazine, in which a plurality of trays for supporting discs are provided so that they can be independently loaded and unloaded in a stacked state, is mounted on a player main body, and in the player main body, a reproducing means for reproducing discs and a magazine are relatively arranged. A disc player that moves up and down to select an arbitrary tray, takes out the selected tray from the magazine to the reproducing means by the ejecting mechanism, and then mounts the disc on this tray on the turntable by the clamping mechanism of the reproducing means to reproduce. A drive member for driving the loading / unloading mechanism and the clamp mechanism by rotation, a first transmission member pivotally supported to transmit the driving force of the driving member to the loading / unloading mechanism, A second transmission member pivotally supported to transmit the driving force of the drive member to the clamp mechanism, and the first transmission member and the second transmission member are provided with the second transmission member. At the constant rotation position, the tips of the engagement grooves are formed to face each other in the respective radial directions, and one end of the engagement groove is formed at a predetermined rotation position of the first transmission member and the second transmission member on the drive member. A disc player, characterized in that a drive projection is formed on the other side, which engages with each engagement groove and drives the first transmission member and the second transmission member in order.