JPH0145149B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a method for removing and removing a disc-shaped record carrier (record) housed in a record case from the record case in conjunction with the insertion of the record case into a device. It relates to a recording disc playback device that allows storage in a record case, and in particular,
The present invention is characterized by a drive section of a record elevating mechanism that moves the record up and down in the direction of the turntable in response to the operations of taking out and storing the record from the record case.

Conventional structure and its problems Traditionally, a record case containing records is inserted into a playback device up to a predetermined position, and when the case is removed, only the record is placed in the playback device at a predetermined position. The engaged and held record is lowered to the turntable by the record elevating mechanism, and the record is placed and fixed on the turntable. After the playback is finished, the record elevating mechanism lowers the record to the turntable. A system has been proposed in which the record is raised to a predetermined position and then placed in a case.

In the conventional configuration, an independent motor or the like is used as the drive source for the record lifting mechanism. Therefore, one new drive source is required, and one new drive source is required. In order to have one, consideration must be given to adjusting the time relationship at the start of driving with other drive sources.

Purpose of the Invention In view of the above-mentioned problems, the present invention provides an inexpensive and highly reliable playback device by using a drive source for transporting a scanning body that plays back signals from a record as a drive source for a record lifting mechanism. This is what we do.

Structure of the Invention The present invention is configured to move up and down coaxially with the rotation axis of a turntable, and in a first state in which it is descending, a recording disc is placed on the turntable, and in a second state in which it is in an ascending state. an elevating means for supporting the recording medium above the turntable; a scanning body transporting means for detecting a signal from the recording disk on the turntable; and moving the elevating means between a first state and a second state. A first driving means that drives the scanning member transporting means in the radial direction of the recording disk, and a second driving means that drives the scanning body transporting means in the radial direction of the recording disk are switched and driven by the same driving source, and the first driving means is driven. Sometimes the second
The invention is characterized in that it has a drive source switching mechanism that operates to bias the drive means in the braking direction.

DESCRIPTION OF EMBODIMENTS An embodiment of the reproducing apparatus according to the present invention will be described below with reference to the drawings.

1 to 3 show the configuration of a record case that can be used in a playback device according to the present invention, in which a rectangular record case 1 has a record case body 2.
(hereinafter referred to as a case) and a lid 3 that is removably connected to an opening provided on the front side of the case 2 in the insertion direction _X1 into the device. The case 2 and the lid 3 are made of styrene resin, for example.

The case 2 is made up of a pair of halves 4 molded with the same mold and pasted together, and the inside is a flat record storage space 5 (height is equal to the thickness of the record) over its entire width and length. , a record 6 is stored in this space 5. This space 5 is in the insertion direction
There is an opening 7 on the _X1 side, and the remaining three sides are closed. The constituent parts of the case 2 are arranged so that the same constituent parts are located at diametrically opposite positions when viewed from the direction of arrow _X1 with the center line l in the insertion direction as the center.

Each half 4 is comprised of a flat plate part 8 having recesses 17 on the left and right sides that serve as hinges when expanded, and protrusions 9, 10, 11 along the three edges. Looking at the lower half 4 in FIG. 1, there are windows 12 formed on the left and right sides near the opening of the flat plate portion 8, into which expansion arms (to be described later) engage, and a lid (to be described later) in the center near the opening. A recess 13 is formed in which the protrusion engages.
Further, a pair of tapered surfaces 14 are formed symmetrically on the opening edge. This is to guide the insertion of the latching arm, which will be described later. Also in the back is the center line l.
Projections 15, with which the record 6 comes into contact, are formed at positions shifted further to the right and left. Furthermore, a recess 16 is provided on the inner surface near the opening of each of the protrusions 9 and 10, into which a projection of a lid, which will be described later, engages. The half body 4 formed in this manner is adhered to the entire circumference or a portion of the protrusions 9, 10, 11 to form the case 2.

At the end of the lid 3, there is a flange portion 1 that closes the opening 7 of the case 2 when the lid 3 is engaged and fixed to the case 2.
8, and symmetrically about the center line l, there is a notch 19 through which an expansion arm (to be described later) can enter, an inclined part 27 (to guide a disc clamping arm (to be described later)), and a thin wall (thinner than the glue guard of a record). A guide groove 20 having a portion 28 is formed on both sides, and a protrusion 21 that engages with the recess 13 of the case 2 is formed on the center line l.
are formed on both sides. Also, lid 3 is case 2
A sloped portion 22 and a tapered portion 23 are provided to serve as a guide when entering the recessed portion 16.
a protrusion 24 that engages with and fixes the lid 3 to the case 2;
is provided on an arm 25 that utilizes the flexibility of resin, and the distal end thereof is provided with an inclined portion 26 that engages with a release member to be described later.

FIG. 2 shows a state in which the record 6 and the lid 3 are assembled into the case 2. This state will be explained with reference to FIG. 1.
It comes into contact with and is locked in the depth direction, and is locked in the width direction by the protrusions 9 and 10. The lid 3 is
The protrusion 24 engages with the recess 16, and the protrusion 2
1 engages with the recess 13, thereby closing and coupling the opening 7.

As a result, the record 6 is defined by the arcuate portion 29 of the lid 3 also in the insertion direction _X1 , and is stored without falling out of the case 2. Note that the thickness of the portion of the lid 3 that enters the case 2 is approximately the same thickness as the storage space of the case 2, and the record 6 will not fall out from the gap.

FIG. 3 is a detailed view of the lid 3, in which the shape of the side facing the record 6 is, for example, a circular arc with gaps b at both ends larger than gaps a in the center. This is to ensure stable operation even if the relative relationship between the lid 3 and the record 6 deviates somewhat in the direction of the arrow Y during a playback operation to be described later.

4 to 9 relate to the basic configuration of one embodiment of the playback apparatus of the present invention, in which FIG. 4 is a schematic configuration diagram, FIG. 5 is a partial detailed diagram of the disk holding mechanism, and FIG. 7A and 7B are partial detailed views, 8A and 8B are partial operation views, and 9A and 9B are diagrams showing the state in which the record 6 and the lid 3 are clamped. It is.

The playback device 50 includes a mechanism 51 for expanding the opening 7 of the case 2, a turntable 52 on which the record 6 is placed, a mechanism 53 for holding the record 6, a mechanism 54 for latching the lid 3, and the like. ing.

The case expanding mechanism 51 is located near the record case insertion opening 55 of the playback device 50, and is guided by guide rails 56 on both sides and reversibly moves in the directions of arrows X ₁ and X ₂ . The expansion mechanism 51 is composed of an upper beam 57 and a lower beam 58 extending in the width direction of the playback device 50, and each beam 57, 58 moves on the guide rail 56 rotatably about shafts 57a, 58a. A pair of expanding arms 59 are provided on the sliding movable body 51a. When each beam 57, 58 is located near the record case insertion opening 55, the action of the leaf spring 60 causes the beams 57, 58 to
As shown in FIGS. 4 and 6, the expansion arms 59 are inclined so as to be close to each other and cross each other. beam 5
7, 58 moves in the arrow X ₁ direction, beam 5
Rollers 61 rotatably provided at 7 and 58
rides on the tapered part 62 formed at the end of the guide rail 56 and rotates so that they are horizontal,
The expansion arms 59 are rotated vertically away from each other.

The disk clamping mechanism 53 includes a lower clamp arm 63
and a pair of upper clamp arms 64, and is provided at the back of the playback device 50. Furthermore, this clamping mechanism 5
3 is constructed such that the record 6 inserted into the record case through the guide groove 20 of the lid 3 mentioned above is held between two places. Lower clamp arm 63
has a pair of clamp parts 63a, and an upper shaft 65 supported by an arm 73a erected on a base 73.
It is rotatably supported on the shaft. This lower clamp arm 63 is configured to open and close in response to the operation of a cam plate 154 (described later) (the connecting portion is not shown).
Upper side (direction of arrow c) by a normal spring (not shown)
It is rotated and energized. The upper clamp arm 64 is
The upper shaft 65 is composed of an arm 64a, a clamp portion 64b provided at the tip thereof, and a stopper shaft 64c fixed to the other end by caulking.
It is rotatably supported on the shaft.

The lid latching mechanism 54 is constructed symmetrically on both sides in the direction of arrow z, and one side will be described here.
The components on the other side are numbered the same with the suffix a. The latching member 70 has a U-shape, is rotatably supported by a fulcrum pin 74 fixed to a base 73, and is mounted on a push lever 72 biased by a spring (not shown) in the G direction in the figure. It is rotatably supported by a pin 71 fixed to the base 73, and a cam groove 75 at the other end engages with a cam pin 76 fixed to the base 73. As a result, the latch member 70 rotates in directions E and F in the figure in response to the movement of the push lever 72. Reference numeral 77 denotes a pressing member that comes into contact with the flange portion 18 of the lid 3, and is fixed to the push lever 72. 80 is the aforementioned lid 3
This is a release member that engages with the inclined portion 26 of the base 73 and is fixed to the base 73. Pin 81 on base 73
is fixed and can be rotated about this as a fulcrum, and a lock cam 85 having a cam groove 83, a convex portion 82 at one end, and an engaging portion 84 at the other end is rotated in the direction of arrow H in FIG. 5 by a spring 85a. It is energized. One end of a lock pin 78 that rotatably connects the aforementioned push levers 72, 72a is engaged with the cam groove 83. A pin 86 fixed to the base 73 is provided with a release lever 87 which is rotatably biased by a spring 89 in the direction of arrow K in the figure and whose position is defined by the above-mentioned upper shaft 65.
The end of the auxiliary lever 90 is supported by a pin 88 implanted in the lock cam 85 and is movable in the J direction in response to the movement of the release lever 87 in the M direction. 82. A pin 91 is fixed to the other end of the release lever 87, and an abutting member 9 is rotatable thereon and biased by a spring 93 attached to the push lever 71.
2 is installed. This abutting member 92 can take two states shown in FIG. 7A and 7B via a spring 93 depending on the position of the push lever 72.

The turntable 52 is attached to the motor 100 via a boss 101, and a ring 102 at its center that can be engaged with the center hole of a record passes through the turntable 52 via legs 103 and is movable up and down. It is set in.

Another ring 104 is provided below the leg 103, and its position is defined by engaging the lifting ring 105. This elevating ring 105 is provided with a guide pin 106, which is supported by the elongated hole 107a of the guide plate 107 and the other end of a fork plate 108 whose one end is rotatably supported by a fulcrum 109 and a support shaft 110. It is configured to move up and down in response to the movement of the plate 108. The connecting plate 11 is attached to the fork plate 108.
1 and a connecting pin 112 are fixed, and are connected to a drive mechanism 150, which will be described later, via this connecting pin 112.

The drive mechanism 150 is integrated with a record drive system 151 operated by a cam plate 154 driven through gears 152 and 153, and a carriage 120 driven by gears 156 and 157, and which picks up signals from the record 6. The carriage drive system 155 has a gear 158 that meshes with the rack 121 and drives the carriage 120 in the directions of arrows N and P. A cam groove 154a is provided in the cam plate 154, and a sub-arm 160 rotatably supported by a support shaft 159 is attached to the cam groove 154a.
A pin 161 fixed to is fitted. A main arm 165 is rotatably supported on a support shaft 159 on the sub-arm 160, and a side cam 163 rotatably supported on a support shaft 162 is connected to the charge spring 1 at one end via a pin 164.
66, it is connected at a position where it abuts on the position defining portion 160a. The other end of this main arm 165 is connected to the aforementioned connecting pin 112. The drive mechanism 150 is also provided with a clutch portion 170 for switching power transmission to the record drive system 151 and the carriage drive system 155 described above.
This clutch portion 170 is rotatably supported by a support shaft 171, and has a motor 172 and a belt 173 at one end.
It has a rotation shaft 176 of a pulley gear 157 which has a gear 152 and a pinion 174 that can mesh with the gear 156 at the lower end, and the gear 156 at the other end.
It is composed of a clutch lever 178 having a latch portion 177 that can be engaged with the clutch lever 178, a solenoid 179 that engages with the clutch lever 178, and a spring 180 that biases the clutch lever 178. The drive system is switched depending on whether the power is turned on (FIG. 7A) or when the power is not energized (FIG. 7B).

Next, this operation will be explained. First, when the standby SW (not shown) of the playback device is pressed, the solenoid 179 is energized and the motor 172 rotates, resulting in the state shown in FIG. 7A, in which the ring 102 is raised. In this state, when the record case 1 is inserted into the playback device 50 through the insertion port 55 with the lid 3 facing forward, the closed expansion arm 59 enters the notch 19 of the lid 3, and the case expansion mechanism 51 is pushed as the cartridge 1 is inserted, and the arrow
X Move in _one direction. Note that the expansion arm 59 enters into the case 2 reliably by the action of the tapered portion 14 provided at the opening of the case 2. At this time, the tips of the expanding arms 59 are at positions corresponding to the windows 12 of the case 2, respectively. When the case expansion mechanism 51 moves,
The expansion arms 59 rotate in the direction of opening each other, and the case 2
The window 12 is locked by the end locking portion of the expansion arm 59 and pushed open, and the case 2 is expanded. Thereafter, the case 2 is inserted in the direction of arrow _X1 in the expanded state.
Here, since the case 2 is provided with the recess 17 as described above, the expansion operation described above is performed by the insertion operation with a relatively light force. Also, in this state, the protrusion 24 of the lid 3 mentioned above is inserted into the recess 1 of the case 2.
6, even if the cartridge is pulled out halfway, the lid 3 will move together with the case 2, and the lid 3 will not be left alone in the middle of the playback device 50. Further, as the case expanding mechanism 51 moves in the direction of _arrow (not shown) As a result, the main arm 165 rotates in the direction of arrow S against the charge spring 166, and the connecting pin 112, connecting plate 111, and fork plate 108 rotate.
The ring 102 is lowered through the ring 102 and moved to a position where it does not obstruct entry of the record case 1.

When the record case 1 is inserted deep into the playback device 50 together with the case expansion mechanism 51, the release members 80 and 80a arranged on the left and right enter the left and right openings of the record case 1, and the lid 3 is opened. Pushing the inclined parts 26 of the arms 25, the arms 25 are respectively displaced inwardly,
The engagement between the protrusion 24 and the recess 16 of the case 2 is released. In other words, the connection between the lid 3 and the case 2 is released.

At this time, the contact member 92 is in the state shown in FIG. 8A, and does not obstruct the progress of the beams 57, 58. As the engagement between the lid 3 and the case 2 begins to disengage, the flange portion 18 of the lid 3 is pressed against the pressing members 77, 77.
Press a and this will release the push levers 72, 72.
a rotates in the direction of arrow T, the connecting pin 81 moves while contacting the cam groove 83 of the lock cam 85, and when it reaches the L-shaped portion 83a of the cam groove 83, the lock cam 85 is rotated in the direction of arrow H by the force of the spring 85a. Then, the push levers 72, 72a are locked in the specified position. As the push levers 72, 72a rotate, the latching member 70 rotates in the direction of arrow E by the cam groove 75 and engages with the notch 19 of the lid 3, so that the lid 3 is in a latched state.

In addition, when the lock cam 85 rotates in the H direction, the engaging part 84 provided at the tip of the lock cam 85 engages with the stopper pin 64c, and the upper and lower clamp arms 64 and 63 engage with the stopper pin 64c.
In order to restrict the movement in the direction, the record 6 is held between the arms, resulting in the states shown in Fig. 9 A and B.

In the states shown in FIGS. 9A and 9B, the contact member 92 is in the state shown in FIG. 8B, but does not prevent the beam 57 from being pulled out in the _X2 direction.

Next, when the record case 1 is pulled out in the direction of _arrow . At this time, since the opening 7 of the case 2 is expanded, the record 6 will not be damaged. Before the record 6 is completely removed from the case 2, the side cam 163 is unlocked by the aforementioned roller 130, and the main arm 165 is released from the charge spring 1.
66 in the direction of arrow T, and the ring 1
02 rises, and the ring 102 engages with the center hole of the record 6. After this, when the case 2 is completely pulled out, the lid 3 is attached to the latch members 54, 54a.
, the record 6 has both clamp arms 63, 64 and
Supported by the ring 102 of the turntable section,
The state shown in FIG. 8A, in which each of the parts is supported at a prescribed position, is reached. In this state, the lid 3 is attached to the latch member 54,
The record 6 is held and fixed by the flange portion 18 while being clamped by the record 6, and is stably supported by both clamp arms 63, 64 and the ring 102.

Next, when a play operation is performed, the motor 172 reverses and the sub-arm 160 rotates along the cam groove 154a, causing the main arm 165 to rotate in the direction of arrow S, connecting the connecting pin 112 and the connecting plate 11.
1. The ring 102 is lowered via the fork plate 108, and the record 6 is transferred onto the turntable 52. (configured to open and close in response). record 6
is transferred to the turntable 52, the solenoid 179 is de-energized, and the clutch portion 170
The carriage 1 is engaged with the carriage drive system 155 as shown in FIG.
20 is transferred in the direction of arrow N, and reproduction begins. Then, when the regeneration is finished, the motor 172 is reversed, and the carriage 120 is transferred in the direction of arrow P.
When the solenoid 179 is moved to a predetermined position, the solenoid 179 is energized, and the clutch portion 170 is connected to the record drive system 1.
51, the record 6 is brought into the state shown in FIG. Note that when the clutch section 170 switches from the carriage drive system 155 to the record drive system 151, the clutch plate 17
A rack portion 177 provided at 8 engages with gear 156 to prevent rotation of carriage drive system 155 and prevent carriage 120 from coming out of a predetermined position. When the record 6 rises to a predetermined position, it returns to the state shown in FIG. 9A.

When the empty case 2 is inserted in the state shown in FIG. 9A, the abutting member 92 has the beam 57 in the state shown in FIG.
comes into contact with. When the case 2 further advances from this state, the release lever 87 rotates in the direction of arrow M via the contact member 92, and the auxiliary lever 90
moves in the direction of arrow J, the lock cam 85 rotates in the direction of arrow I, and the connecting pin 78 moves in the L direction of the lock cam 85.
At the same time, the engaging portion 84 and the stopper pin 64c are disengaged from each other. Through this series of operations, the push levers 72, 72a are returned in the direction of arrow G by a spring force (not shown), and the record 6 is also released from being held by the clamp arms 63, 64 and relatively enters the case 2. After this, when the case 2 is pulled out in the direction of the arrow _X2 , the record 6 and the lid 3 are taken out with the record 6 housed in the case 2.

Although one embodiment of the reproducing apparatus according to the present invention has been described above, the present invention is not limited to this configuration. For example, instead of the rack 121, a wire, a belt, or the like may be used as the means for transporting the carriage 120.

Effects of the Invention According to the present invention, the following effects can be brought about.

(1) Conventionally, separate motors were used to drive the record up and down and to drive the carriage.
It can be configured with one motor.

(2) Since the drive is switched by a single motor, there is no malfunction such as when the carriage comes out while the record is rising.

(3) By selecting the reduction gear stage, the operation from lowering the record to feeding the carriage can be controlled.
This can be done by simply turning the solenoid ON and OFF without changing the direction of rotation of the motor.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing an example of a record case used in the present invention, FIG. 2 is a perspective view of the same,
3A, 3B, and 3C are a front view, a plan view, and a side view of the lid of the record case; FIG. 4 is a partially cutaway perspective view showing one embodiment of the recording disk reproducing apparatus of the present invention;
The figure is a perspective view of the same main part, Fig. 6 is a side sectional view of the same main part, Fig. 7 A and B are plan views of the same main part in different operating states, and Fig. 8 A and B are the same main part in different operating states. FIG. 9A is a schematic side view of the main part, FIG. 9A is a plan view of the main part, and FIG. 9B is a side view of the main part. 6...Record disc, 52...Turntable, 1
02...Ring, 120...Carriage, 172
...Motor, 170...Clutch part.

Claims (1)

[Claims] 1 The recording disk is moved up and down coaxially with the rotation axis of the turntable, and in the first state in which it is descending, the recording disk is placed on the turntable, and in the second state in which it is rising, the recording disk is placed on the turntable. a lifting means supported above the table; a carriage transporting means transporting a carriage for reproducing signals from the recording disk on the turntable in the radial direction of the recording disk; and a reduction gear stage. a first driving means for driving up and down so as to take the first state and the second state, and a second driving means for driving the carriage transport means to transport the carriage in a radial direction of the recording disk, including a reduction gear stage. a driving means, a motor for driving the first driving means and the second driving means, and a determination as to whether the motor drives the first driving means or the second driving means; a drive switching means for switching, and a second drive switching means that is added to the drive switching means and interlocks with the drive switching to prevent the carriage from coming out above the recording disk when the first drive means is driven.
means for engaging with the driving means to prevent the driving thereof, and the reduction gear stage of the first driving means and the reduction gear stage of the second driving means are driven by the first driving means. A recording disk reproducing apparatus characterized in that the recording disk reproducing apparatus is selected so that the lowering of the recording disk and the sending of the carriage onto the recording disk by the second driving means are performed without changing the rotational direction of the motor. .