JPS6412035B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a disc-shaped recording medium reproducing device, which comprises:
In particular, the present invention relates to a device in which a disc-shaped recording medium can be automatically pulled in through an opening provided in a front panel of a cabinet and playback of the disc-shaped recording medium can be started.

[Summary of the invention]

In the present invention, after a disc-shaped recording medium is drawn into a cabinet through an opening provided in a front panel of the cabinet by a carrier, relative vertical movement between the carrier and a rotary drive means provided in the cabinet is performed. A disc-shaped recording medium is mounted on a rotational drive means by a presser member, and the mounted disc-shaped recording medium is pressed onto the rotational drive means by a pressing member to be rotationally driven. In the playback device, the carrier is rotationally driven by first and second elevating mechanisms driven by drive members that move between a protruding position where the carrier is protruded outside the cabinet and a retracted position where the carrier is retracted into the cabinet. By configuring the disc-shaped recording medium to be mounted on the means and the disc-shaped recording medium to be pressed by the presser member, the disc-shaped recording medium can be pulled into the cabinet and rotated. The mounting and pressing operations on the means can be performed in an orderly and stable manner, and the structure can be extremely simplified.

[Conventional technology]

After the disc-shaped recording medium is drawn into the cabinet through the opening provided in the front panel of the cabinet by the carrier, the disc-shaped recording medium is moved up and down relative to the rotary drive means provided in the cabinet. For example, there are known examples 1 in which a disk-shaped recording medium is mounted on a rotary drive means, such as Japanese Patent Application Laid-Open No. 107805/1982 and Japanese Utility Model Application No. 117206/1983.

In addition, examples of disc-shaped recording media that are rotated by being pressed onto a rotational drive means by a pressing member include, for example, Japanese Patent Application Laid-Open No. 53-15112, Japanese Utility Model Application No. 53-68212, There are two known examples such as Utility Model Application Publication No. 53-81006 and Utility Model Application Publication No. 54-123810.

However, there has been no effective disk-shaped recording medium reproducing device that has both of the functions of Publication Example 1 and Publication Example 2.

[Problem that the invention seeks to solve]

That is, in the disc-shaped recording medium reproducing apparatus equipped with both the mechanisms of Known Example 1 and Known Example 2, in Known Example 1, the carrier is placed at a protruding position where it protrudes outside the cabinet and at a retracted position where it is pulled into the cabinet. A drive means such as a motor that drives the carrier and the rotary drive means, and a drive means such as a motor that drives the carrier and the rotation drive means so as to move up and down relative to each other are required. Since a driving means such as a motor for driving the driving means up and down is required, a total of three driving means are required. In addition, the carrier pulls in the disc-shaped recording medium, the disc-shaped recording medium is mounted on the rotational drive means by the relative vertical movement between the carrier and the rotational drive means, and the disc-shaped recording medium is moved by the presser member. In order to perform each pressing operation in an orderly and stable manner, it is necessary to control the three driving means described above in synchronization with each other. In order to perform the synchronous control, a control circuit is required to accurately detect and control the respective positions of the carrier, rotational drive means, and presser member using a plurality of position detection means such as photodetectors. Thus, a construction using a control circuit with three drive means and a plurality of position detection means is extremely complex and expensive. Furthermore, if for some reason the position detecting means makes a false detection, the control will no longer be synchronized, causing an immediate malfunction and, in some cases, damaging the disc-shaped recording medium. A fatal accident may occur.

The present invention has been made in order to solve the above-mentioned problems, and there is no need for a control circuit having a plurality of position detection means, and moreover, only one driving means such as a motor is required. An object of the present invention is to provide a reproducing apparatus for a disc-shaped recording medium.

[Means for solving problems]

The disk-shaped recording medium reproducing device according to the present invention includes:
After the disc-shaped recording medium is drawn into the cabinet through the opening provided in the front panel of the cabinet by the carrier, it is rotated circularly by the relative vertical movement of the carrier and the rotary drive means provided in the cabinet. In a playback device for a disk-shaped recording medium, the disk-shaped recording medium is mounted on a rotational drive means, and the mounted disk-shaped recording medium is pressed onto the rotational drive means by a pressing member to be rotationally driven. , a driving member for moving the carrier between a protruding position in which it protrudes outside the cabinet and a retracted position in which it is retracted into the cabinet; a first driving part provided on the driving member; and a first driving part provided in the first driving part. and a first elevating member that is moved up and down by the drive member, and as the carrier is moved by the drive member, the carrier and the rotary drive means are moved up and down relative to each other, and the disc-shaped recording medium is moved up and down. a first elevating mechanism that is attached to and detached from the rotational drive means; a second elevating mechanism provided on the driving member; and a second elevating member that is elevated and lowered by the second driving portion. a pressing position in which a support member that raises and lowers the presser member as the carrier is moved by the drive member is moved up and down to press the presser member against the disk-shaped recording medium; and a second elevating mechanism for elevating and lowering between the position and the separated position.

[Effect]

According to the disc-shaped recording medium playback device according to the present invention, when the drive member moves the carrier between the protruding position and the retracted position, the first and second drive sections provided on the drive member move the carrier to the retracted position. The first and second lifting members are driven to mechanically completely synchronize the relative vertical movement of the carrier and the rotational drive means and the lifting and lowering of the holding member between the pressing position and the separating position. I can make it happen. Therefore, the drawing operation of the disk-shaped recording medium by the carrier, the mounting operation of the disk-shaped recording medium on the rotational drive means by the relative vertical movement of the carrier and the rotation means, and the operation of disk-shaped recording by the pressing member. The pressing operation of the medium can be performed in complete mechanical synchronization with one driving member. For this reason, a complicated control circuit having multiple position detection means is completely unnecessary, and since the driving means such as a motor only needs to drive the driving member, only one driving means such as a motor is required. .

〔Example〕

An embodiment in which the present invention is applied to a record player will be described below with reference to the drawings.

First, a front panel 2 of the cabinet 1 is provided with an opening 3 having a horizontally long shape. Also, front panel 2
is provided with an operation section 5 having a plurality of operation buttons 4 such as power on/off, start, stop, etc. A turntable 6 is disposed horizontally within the cabinet 1, and is configured to be rotationally driven by a directly connected motor 7 fixedly installed within the cabinet 1.

Next, a carrier 9 is disposed within the cabinet 1, and this carrier 9 is moved up and down with respect to a turntable 6, which is a rotational drive means, while maintaining a horizontal state, and is moved in and out of the opening 3 horizontally. It is configured to

First, this carrier 9 is made up of a horizontal plate, the upper surface of which serves as a record mounting surface 10. Note that when a record R, which is a disk-shaped recording medium, is placed on this placement surface 10, the placement surface 1
The record R is positioned approximately at the center of the carrier 9 by the left and right sides 11a, 11b of the record R, and a semicircular arc surface 11c continuous thereto. Further, a circular hole 12 slightly larger than the diameter of the turntable 6 is formed at the center position of the carrier 9.

By the way, the drive mechanism of this carrier 9 includes a pair of left and right sliders 13a, 13b and 144a, 14b.
and a motor 15. That is, both sliders 14a, 1 which are driving members in the present invention
4b are first integrally connected to each other by a connecting rod 16. Next, these sliders 14a, 14
U grooves 17a and 17b are provided along the longitudinal direction on the lower surface of b, and a pair of left and right guide shafts 1 are installed horizontally and in parallel within the cabinet 1.
8a, 18b through their U grooves 17a, 17b, and are configured to be slidable in the front-rear direction along both guide shafts 18a, 18b. Next, slot holes 19a and 1 are provided in both sliders 14a and 14b.
9b is provided along the longitudinal direction, and both sliders 13a, 13b are inserted into these slots 19a, 19.
b, and is configured to be slidable in the front-rear direction. Next, on the rear end side of the carrier 9, a pair of left and right lifting shafts 20a, 20b, which are the first lifting members vertically planted on the lower surface, are connected to both sliders 13a, 13b.
It is inserted into insertion holes 21a and 21b provided in the holder so as to be able to move up and down. Next, both sliders 14a, 14b
Racks 22a, 22b are provided along the longitudinal direction inside the racks 22a, 22b.
A pair of pinions 23a, 23b meshed with pinion 2b
are fixed to both ends of a transmission shaft 24 rotatably supported within the cabinet 1. The motor shaft 25 of one motor 15, which is a driving means fixedly installed in the cabinet 1, and the transmission shaft 24 are connected to the gear 2.
6 and 27.

Each of the vertical shafts 20a, 20b is connected by a spring 30 fitted to the outer periphery of each vertical shaft 20a, 20b between a washer 29 fitted to the lower end of each vertical shaft 20a, 20b and each slider 13a, 13b.
b is slidably biased downward. Also, the bottom surface 3 of the slot 19a, 19b of each slider 14a, 14b
1 has a step surface 32 raised to a predetermined height at the rear end.
is provided, and the stepped surface 32 and the bottom surface 31 are connected by a slope 33, which is a first driving section. The lower end of each lifting shaft 20a, 20b is configured to be pressed onto each slope 33.
The slope 33 and the elevating shafts 20a and 20b constitute a first elevating mechanism referred to in the present invention. Further, a guide pin 34 parallel to each guide shaft 18a, 18b is fixed to the front end of each slider 13a, 13b, and the front end of each guide pin 34 is inserted into a hole provided in a front end wall 35 of each slider 14a, 14b. It is inserted into the hole 36. A spring 37 fitted to each guide pin 34 between each front end wall 35 and the front end of each slider 13a, 13b causes each slider 13a, 13b to be moved into each slot 19a, 19b of each slider 14a, 14b. It is biased to slide rearward inside. Further, a stopper pin 39 is attached to the rear end of each guide shaft 18a, 18b via a bracket 38.
It is fixed in parallel with 8b. Each of these stopper pins 39 is attached to each slider 14a, 14b.
It is configured to be inserted through an insertion hole 41 provided in the rear end wall 40 and abutted against the rear end of each slider 13a, 13b.

Next, in the cabinet 1, on one side of the turntable 6, a record R holding arm 43 is arranged. This presser arm 43 is attached to a bracket 44.
The presser arm 4 is pivotally connected to the presser arm 4 via a horizontal fulcrum shaft 45 so as to be freely rotatable in the vertical direction.
A spring 46 stretched between a part of the bracket 3 and a part of the bracket 44 urges the bracket 44 to rotate downward. A presser disk 47, which is a member for holding down the record R, is rotatably supported on the lower surface of the tip of the presser arm 43, which is a support member, via a bearing (not shown).
A spindle 48 for positioning the center of the record R is provided at the center of the lower surface of the record R. A lifting shaft 49, which is a second lifting member, is held in the bracket 44 so as to be able to rise and fall freely. It is placed on a cam plate 50 that forms a cam plate 50. Note that a presser arm 43 is placed on the upper end of this elevating shaft 49, and a spring 52 fitted around the outer periphery of this elevating shaft 49 is used between a washer 51 fitted on the lower end of the elevating shaft 49 and a bracket 44. The lever shaft 49 is slidably biased downward. Note that the upper surface of the cam plate 50 has a low surface 53, a high surface 54, and a second surface connecting these.
A slope 55, which is a driving section, is provided. The slope 55 and the elevating shaft 49 constitute a second elevating mechanism in the present invention.

Further, a fulcrum pin 57 is provided in the opening 3 of the cabinet 1.
A lid 58 is provided that is rotatable around the center. This lid 58 is configured to be rotated clockwise by a spring 59 as shown in FIG. 3A to close the opening 3. Further, a tone arm device 6 having a tone arm 60 is located at a position opposite to the presser arm 43 in the cabinet 1.
1 is placed.

Next, the automatic setting and resetting operations of the record R by the record player configured as above will be explained.

First, when a starting button such as a start button is pressed, the motor 15 is driven to rotate in the forward direction. Both pinions 2 and 2 are connected via gears 26, 27 and transmission shaft 24
3a and 23b are driven in forward rotation, and both racks 22
a, 22b are driven, and both sliders 14a, 14
b begins to move forward, which is the left side in FIG. 3A.

At this time, first of all, when both sliders 14a and 14b start moving forward, the lifting shaft 49 is moved by the spring 5.
2 from the lower surface 53 of the cam plate 50 to the slope 55
and is pushed up onto the elevated surface 54. Then, the lifting shaft 49 pushes up the presser arm 43, and the presser arm 43 is rotated to a predetermined height above the turntable 6 as shown in FIG. 4A, and the presser disk 47 is moved to a predetermined height above the turntable 6. The robot is then raised to a spaced apart position.

Next, when both sliders 14a and 14b are moved forward, since both sliders 13a and 13b are pressed and fixed to both stopper pins 39 by both springs 37, the forward movement of both sliders 14a and 14b is prevented. At the same time, both the lifting shafts 20a and 20b move up the slopes 33 against the springs 30, and the carrier 9 is raised to the retracted position as shown in FIG. 3B by the lifting shafts 20a and 20b. And as shown in Fig. 3, both lifting shafts 20a, 20b
When the sliders 14a and 14b are pushed up onto the stepped surfaces 32, the rear end wall 40 of the sliders 14a and 14b
3a, 13b, and thereafter both sliders 13a, 13b are moved forward together with both sliders 14a, 14b.

As a result, the carrier 9 is horizontally moved forward, and as shown in FIG. 3C, the carrier 9 uses its front end to push open the lid 58 against the spring 59, and protrudes to a predetermined length in front of the opening 3. It is moved to the protruding position. When both sliders 14a and 14b reach a predetermined position, it is detected by a sensor 63 such as a micro switch, and the motor 15 is stopped.
Waiting for record R to be inserted.

Next, the record R is inserted by sliding it onto the record mounting surface 10 of the carrier 9.
When the record R has been inserted into a predetermined position, it is detected by a sensor 64 such as a photoelectric switch, and the motor 15 is driven to rotate in reverse. Both pinions 2 and 2 are connected via gears 26, 27 and transmission shaft 24
3a and 23b are driven in reverse rotation, and both racks 22
a, 22b are driven, and both sliders 14a, 14
b starts moving backwards, which is to the right in Figure 3C.

At this time, both sliders 13a and 13b are moved rearward together with both sliders 14a and 14b, and carrier 9 is horizontally drawn rearward while closing lid 58.

When the record R is pulled in to the retracted position directly above the turntable 6, both sliders 1
3a and 13b come into contact with both stopper pins 39 and are stopped. On the other hand, both sliders 14a and 14b continue to be moved to the rear side. As a result, both lifting shafts 20a, 20b are moved from above both stepped surfaces 32 to both inclined surfaces 33.
The carrier 9 is lowered by the lift shafts 20a and 20b, and the carrier 9 and the turntable 6 are moved up and down relative to each other.

As the carrier 9 descends, the record R is placed on the turntable 6. The carrier 9 passes through the turntable 6 through the circular hole 12 and is lowered to a position where the record mounting surface 10 is lower than the top surface of the turntable 6.

On the other hand, as both sliders 14a and 14b move rearward, the elevating shaft 49 moves toward the high surface 50 of the cam plate 50.
From there, it slides down the slope 55 onto the low-lying surface 53.
As a result, the presser arm 43 is rotated downward by the spring 46 as shown in FIG. 4B, and the presser disk 4
7 is lowered to the pressing position and presses the record R relative to the upper surface of the turntable 6, and the spindle 48 is inserted through the center hole of the record R and positioned at the center of the turntable 6.

When both sliders 14a and 14b reach a predetermined position, it is detected by a sensor 65 such as a micro switch, and the motor 15 is stopped. Thereafter, the tone arm 60 of the tone arm device 61 is automatically lead-in onto the record R as shown by the imaginary line in FIG.
is held between the turntable 6 and the presser disk 47 from above and below, and is rotated by the turntable 6, and the performance begins.

Note that after the performance is finished or when the stop button is pressed, the tone arm 60 is automatically returned to the armrest position shown by the solid line in FIG. 2, and then the motor 15 is driven to rotate in the forward direction. As a result, as described above, the presser arm 43 is rotated upward and the carrier 9 is simultaneously raised, the record R on the turntable 6 is placed on the record mounting surface 10 of the carrier 9, and then carrier 9
is moved forward, the lid 58 is pushed open, and the record R is pulled out of the opening 3. Then, when the record R is removed from the record mounting surface 10,
It is detected by the sensor 64, the motor 15 is driven to reverse rotation, and the carrier 9 is pulled rearward.
It is then lowered and returned to its original position.

In addition, in the example described above, a 30cm record R
The system was designed to transport the record R using Carrier 9, for example, 17 cm or 25 cm.
When using vinyl records, you will need to use an appropriate adapter.

Further, in the embodiment, the carrier 9 has a circular hole 12.
However, carriers of various shapes can be used, such as a carrier that holds the periphery of the record R and has a large opening in the center.

Further, in the embodiment, the carrier 9 was configured to move in the horizontal direction and in the vertical direction, but the turntable 6 was configured to move up and down with respect to the carrier 9, so that the carrier 9 could be moved only in the horizontal direction. It can be done.

Furthermore, the present invention can be widely applied not only to record players but also to playback devices that play back disc-shaped recording media such as compact discs, optical disks, and magneto-optical disks, and can also be applied to playback devices that have a recording function. is also applicable.

[Effect of idea]

As described above, the disk-shaped recording medium reproducing apparatus of the present invention is characterized by the drawing-in operation of the disk-shaped recording medium by the carrier and the relative vertical movement of the carrier and the rotating means to generate a circle onto the rotational drive means. Since the mounting operation of the plate-shaped recording medium and the pressing operation of the disc-shaped recording medium by the presser member can be performed in complete mechanical synchronization by one driving member, disc-shaped recording is possible. The operations of drawing the medium into the cabinet, mounting it on the rotational drive means, and pressing it can be performed in an orderly and stable manner, but these operations may be out of synchronization, causing malfunctions and disc-shaped recording. Fatal accidents that damage the medium are unlikely to occur, and safety and reliability are extremely high.

Moreover, there is no need for a complicated control circuit having multiple position detection means, and since the driving means such as a motor only needs to drive the driving member, only one driving means is required, which reduces the structure. It is very simple and can be obtained at a very low cost.

[Brief explanation of drawings]

The drawings show an embodiment of a record player to which the present invention is applied, and FIG. 1 is a perspective view;
Figure 2 is a plan view of the cabinet cut horizontally, Figures 3A to 3C are sectional views taken along the Figure 2 line to explain the operation of the carrier, and Figures 4A and 4B are of a record disc. Figure 2 explains the setting operation - sectional view along the line, Figure 5 is Figure 3A -
Line sectional view, Figure 6 is Figure 3C - line sectional view,
FIG. 7 is a perspective view of the carrier drive mechanism. In addition, in the symbols used in the drawings, 1...cabinet, 2...front panel, 3...opening (opening), 6...turntable (rotation drive means), 9
...Carrier, 14a, 14b...Slider (driving member), 15...Motor (driving means), 20a,
20b...Elevating shaft (first elevating member), 33...
Slope (first drive part), 43... Presser arm (support member), 47... Presser disc (presser member), 49...
...elevating shaft (second elevating member), 55... slope (second drive section), R... record disc (disc-shaped recording medium).

Claims (1)

[Scope of Claims] 1. A cabinet having a rotation drive means for rotating a disc-shaped recording medium therein and provided with a front panel opening, and a protruding position protruding from the opening to the outside of the cabinet. and a retracted position pulled into the inside of the cabinet, place the disc-shaped recording medium at the protruding position, and after retracting the disc-shaped recording medium to the retracted position, the rotation a carrier that moves up and down relative to the drive means to attach and detach the disc-shaped recording medium to and from the rotation drive means; a pressing member that presses the disc-shaped recording medium relatively to the rotational drive means and holds it between the rotational drive means when the disc-shaped recording medium is loaded; The holding member is rotatably supported, and as the carrier loads the disc-shaped recording medium onto the rotational drive means and removes the disc-shaped recording medium from the rotational drive means, the pressing member is pressed against the disc-shaped recording medium. In the disc-shaped recording medium reproducing apparatus, the disc-shaped recording medium reproducing apparatus includes a support member that moves up and down between a pressing position that presses the recording medium and a separate position that is spaced apart from the disc-shaped recording medium, wherein the carrier is moved between the protruding position and the retracting position. a driving member that is moved between positions, a first driving part provided on the driving member, and a first elevating member that is raised and lowered by the first driving part, and the driving member a first elevating mechanism that relatively moves up and down the carrier and the rotary drive means as the carrier moves, and attaches and detaches the disk-shaped recording medium to and from the rotary drive means; It has a second driving part provided on the driving member, and a second elevating member that is raised and lowered by the second driving part, and as the carrier is moved by the driving member, the supporting member and a second elevating mechanism for elevating and lowering the pressing member between the pressing position and the separated position.