JPS60143475A - Recording disk regenerator - Google Patents

Abstract

PURPOSE:To prevent the erroneous operation of an opener by providing a switching means which opens so that the opening port will be able to engage with an enlargement means by inserting a disk case and closes so that engagement with the enlargement means will be prevented by taking out. CONSTITUTION:Before inserting a disk case 1, a shutter plate 50 is prevented from being opened by two shutter stoppers 57 even when the plate 50 is pushed by hand, and it is energized in the closing direction at any time by an inversion spring 55. When the plate 50 is inserted, protrusion parts 63 of two shutter stoppers 57 are pushed and rotated by the disk case 1, and therefore, the stopper of the shutter plate 50 is removed, and the plate can be opened or closed. Since the driving force of the inversion spring 55 is in the reverse direction when a guide pin 60 is positioned by the vicinity of the center of a cam groove 54 in this case, the shutter plate 50 changes energization in the opening direction, the disk 1 and the shutter plate 50 do not contact with each other as a result, and inserting load of the disk case due to the shutter plate is eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a recording method that causes a disc housed in a disc case to be taken out and stored in a disc case in response to an operation of inserting the disc case into a playback device. The present invention relates to a playback device.

Conventional structure and problems In recent years, video signals have been recorded on a spiral recording line of a disk-shaped recording medium (hereinafter referred to as a video disk), which is then placed on a turntable and rotated. Video disc players have been developed that play back video signals by tracing them with a needle. It has functions such as speed search, random access function, clear image, and clear sound, and can be easily used at home using a television, just like a video tape recorder.

Video disc players currently on the market can be broadly divided into capacitive type and optical type.

In the case of the capacitive system, the disc is placed in a disc case, and a front loading system is used in which the disc is removed from the disc case and only the disc is left in the player for playback.

In general, this type of player has a mechanism to open the disc case so that the disc can be taken out (hereinafter referred to as an opener), and a mechanism to take out the disc by gripping the thick part formed on the outer periphery of the disc (hereinafter referred to as chunking). ) and a loading mechanism that places the disc on the turntable or raises it on the same plane as the opener, and when collecting the disc from the playback device into the case, the empty case is By inserting the disc into the case, the disc is released from the chuck and returned to its original state.

Hereinafter, an example of a conventional disk case insertion mode will be described with reference to the drawings. FIG. 1 shows the configuration of a disc case that can be used in a playback device according to an embodiment of the invention. and a lid 3 that is removably connected to an opening provided on the front side in the insertion direction X1.

The case 2 is formed by pasting together a pair of halves 4, and houses a disk 6. The respective constituent parts of the case 2 are arranged so that the same constituent parts are located at diametrically opposite positions when viewed from the arrow X1 direction with the center line l in the insertion direction as the center.

Each half 4 has a flat plate part 8 having recesses 17 on the left and right sides that serve as a hinge when expanded, a protrusion part 9 along the three-sided edges,
10,11. It becomes more. The lower half 4 has windows 12 formed on the left and right sides of the flat plate part 8 near the opening side, which are engaged with expansion parts to be described later, and a convex part of a lid, which will be described later, is engaged in the center near the opening. A hole 13 is formed. Further, a pair of tapered surfaces 14 are formed symmetrically on the opening edge. Further, in the inner part, there are formed protrusions 15 on which the disk 6 abuts at positions shifted to the right and left from the center line l. Furthermore, a recess 16 is provided on the inner surface of the protruding portion 9.10 near the opening, into which a projection of the lid engages.

The half body 4 formed in this manner is adhered to the entire circumference or a portion of the protruding portions 9 and 10° 11 to form the case 2.

The end of the lid 3 is provided with a flange portion 18 that closes the opening 7 of the case 2 when the lid 3 is securely fixed to the case 2, and a flange portion 18, which will be described later, is provided symmetrically to the center line l. a notch 19 through which the disc can be inserted, a sloped part 2 for guiding the disc clamping arm, and a thin part 2 that is thinner than the group guard of the disc.
A guide tank 2o having a diameter of 8 is formed on both sides, and a convex portion 21 that engages with the hole 13 of the case 2 described above is formed on both sides on the center line l. In addition, an inclined part 22 and a tapered part 23 are provided to guide the lid 3 when it enters the case 2, and a protrusion 24 that engages with the recess 16 and fixes the lid 3 to the case 2 is provided. It is provided on an arm 25 that utilizes the flexibility of resin, and has an inclined portion 26 at its tip that engages with a chucking release member (not shown). FIG. 2 is a perspective view showing an example of an opening mechanism for opening the disc case and taking out and recovering the disc. The expansion mechanism is configured to move along a guide wall 31 of a rail 3o fixed to the upper part of a playback device (not shown), and this is a slide rotatably supported by a pin 33 on a base 32. By pushing the roller 34 against the guide wall 31 by the spring 36, a certain expanded state can be reproduced.

The slide plate 36 can be slid left and right by pins 37, 38 and elongated holes 39, and is supported by the base 32. Further, the slide plate 36 has an engaging member 40 and is configured such that an expansion member 41 is interlocked with the slide plate 36, and this expansion member 41 is rotatably supported by the base 32. A support member 42 is fixed to the base so as to overlap the expansion member 41, and when the disc case is expanded, one of the opening surfaces is expanded by engaging the expansion member 41 and the other side by the support member 42. be done. The latch 43 engages with the hole 13 of the case 2, is rotatably supported by the base 32 by a bearing 44 and a pin 46, and is biased by a latch spring 46 to a position where there is no interference with the hole 13 when the case is not inserted. has been done.

FIG. 3 is a sectional view showing the configuration of the expansion mechanism and the rail 3o. The cross section of the rail 3o is C-shaped as shown in the figure. This shape can be easily manufactured by extruding aluminum, for example. As shown in the figure, the opener roller 47 is formed with a V-shaped groove on its outer periphery, and the groove portion is inserted into the guide portion 48 of the rail 3o to open the opener roller 47.
The rollers 47 are designed to roll. two or four
Since the two opener rollers 47 are each guided in this manner and arranged as shown in FIG. 3, the opener can stably transport the case 2 in the disc insertion/ejection direction of the playback apparatus.

The operation of the opener configured as above will be explained below. At the position of the slide roller 34 on the guide wall of the rail 30 as shown in FIG. The case is opened by the member 42. When the opening is normally performed by the two expanding members, the latch 43 engages with the hole 13 (FIG. 1) in the case, and the case and the opener move together. As the case continues to be inserted, the slide roller 34 moves along the taper of the guide wall 31 of the rail 3°, so the slide plate moves in the same way.

By this operation, the two expansion members 41 engaged with the slide plate 36 are interlocked and rotated to a state where the disc can be taken out from the case. FIGS. 5a and 5b show the expansion means 41, respectively.
shows front perspective views before and after rotation. The expansion means 41 used for opening the case is the rail guide wall 31
The case and the opener move together as a unit due to the rotation of the latch 43, and are eventually rotated to the position shown in FIG.

If you insert or remove a disc in this state, the disc will not be damaged by the expansion means. However, since the opener as described above is placed in the front row as the entrance for inserting a disc into the player, It is easy to insert a finger into the disc, and the turntable and disc are rotating during disc playback, which has a fatal drawback in that it is possible to touch the disc. Further, when the latch is pushed out by manual insertion, the opener can move, and as a result, the opener cannot be returned, resulting in a problem that the case cannot be inserted.

OBJECTS OF THE INVENTION The present invention obviates the drawbacks of the prior art as mentioned above.
An object of the present invention is to provide a recording disc playback device in which a shutter mechanism is added to the insertion side of the opener so that the opener cannot be operated except for the disc case, and the shutter does not impose a load on the operation of the opener. That is.

Composition of the Invention The recording disk reproducing apparatus of the present invention includes an expanding means for expanding an opening of a disk case having an opening at one end for storing a disk on which a signal has been recorded; a guiding means having an insertion opening for guiding; a guiding means pivotally supported by the guiding means; when the disc case is inserted, the opening opens so as to be able to engage with the expanding means; when the disc case is removed, the expanding means is opened; and an opening/closing means that closes to prevent engagement with the opening/closing means.

With this configuration, there is no danger of touching the disc or the turntable during playback of the player.
It also makes it possible to prevent major problems such as poor return of the opener and scratches on the disc.

Furthermore, the opening/closing means is provided with reversing means for pulling in the first direction and the second direction, and at a position where the expanding means engages with the disk case to expand, the expanding means is pulled in the first direction, and the expanding means is pulled in the first direction. If it is pulled in the second direction in a position where it does not engage with the case, the reversing mechanism of the opening/closing means becomes a load when inserting the case while the disc case is inserted and the disc is loaded into the player or retrieved. It has the advantage that the insertion force is light without generating force, and the above-mentioned load does not affect the push-out force even in players with a push-out function that pushes the case back when inserting and recovering the disc. There is.

Further, when the opening/closing means is engaged with an opening/closing prevention means provided in the guide means to prevent opening/closing, and the opening/closing prevention means is released in conjunction with the passage of the disc case through the insertion slot, the disc case It is possible to operate the opening/closing means only when the dog is about to be inserted, and even if you try to operate the opening/closing means with something other than the disc case, the opener will not move and the reversing means of the opening/closing means will operate. This is thanks to the addition of a double safety feature.

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

FIG. 6 shows an opening/closing mechanism of a recording disk reproducing apparatus according to an embodiment of the present invention, a reversing mechanism added thereto, and an opening/closing prevention mechanism.
7 is a partial sectional view of the reversing mechanism, and FIGS. 8a and 8b are partial sectional views of the opening/closing prevention mechanism.

In FIG. 6, a shutter plate 50 used as an opener safety function is supported by a column 6 supported by the left and right insertion ports 51.
It is held rotatably about 2 as a fulcrum. Further, guides 53 that come into contact with the disk case are fixed to the shutter plate 50 on the left and right sides. A guide pin 60 is installed on one side of the support column 52, and the guide pin 60 is inserted into a cam groove 64 provided in an insertion port 61, and can be moved within the cam groove by rotation of the shutter plate 5o. This pillar 52
One of the reversing springs 55 is attached to the cam fitting portion, and the other of the reversing springs 55 is inserted into the attachment hole 56 of the insertion opening 51. As a means for preventing rotation of the shutter plate 60, shutter stoppers 57 are provided on the left and right sides of the insertion opening 5 so as to be rotatable about a stopper shaft 58 press-fitted into the insertion opening 61 as a fulcrum.
It is attached to the left and right of 1.

Figures 7a and 7b show the closed and open positions of the shutter plate 5o, respectively. A reversing guide 59 integrated with a guide 63 is attached to the back side of the guide 53 provided on the shutter plate 5o, and a contact portion 61 provided on a part of the base 32 of the opener serves as a reversing guide when the disc case and opener are returned. The shutter plate 50 is moved by pressing the inclined surface 69. The reversing spring 55 is the shutter plate 5
By opening and closing the shutter plate 60, the shutter plate 60 moves to the positions shown in FIG. Furthermore, the parts that perform these functions are hidden by an exterior case (not shown) attached to the front plate 62.

FIG. 8 shows a state when the disc case 1 is inserted and a state when it is not inserted. shutter stopper 67
When the disc case presses the protrusion A63 provided in the disc case, the protrusion B64 that stops the shunter plate 6o from opening rotates around the stopper shaft 58 to the position shown in FIG. b where it does not come into contact with the disc case 1. Further, when the disk case 1 is removed, the shutter stopper 67 is rotated to the original position a by a spring 65 whose one end is fixed to the front plate 62 and the other end is attached to the shutter stopper 57.

The operation of the shutter mechanism of the recording disk reproducing apparatus of this embodiment constructed as described above will be described below. First, before the disk case 1 is inserted, the shutter plate 50 is prevented from opening by the two shutter stoppers 57 even when pushed by hand, and is always biased in the closing direction by the reversing spring 65. When the two shutter plates are pressed, the protrusion 63 of the par 57 is pushed and rotated by the disc case 1, so the shutter plate 50 has no stopper and can be opened and closed. At this time, if the guide pin 6o is located near the center of the cam groove 54, the operating force of the reversing spring 55 will be in the opposite direction, so the shutter plate 50 will change its bias in the opening direction, and as a result, the disc case 1 and the shutter plate 5o As shown in Figure 7, they no longer come into contact with each other, and the load on the disk case inserted by the shutter plate is eliminated. When returning the disk case 1, the contact portion 61 of the base 32 presses the inclined portion of the reversing guide 59 in the direction of the figure →
Since the shutter plate 50 slides in the opposite direction, the shutter plate 50 tries to close forcibly, and when the reversing spring 66 eventually reaches a position where the operation is reversed, the force changes in the closing direction. This is because, for example, even if the shutter plate 5Q is rotated while pushing the two shutter stoppers 57 in the stopper contacting direction with two hands, the contact portion 61 and the reversal guide 69 are still sluggish, so the shutter plate 6o
The opening mechanism returns to its original position without any force acting to open it, and the reversing mechanism is activated only when the disc case 1 is inserted and the opener base 32 moves in the ← direction.

As described above, according to this embodiment, by adding a shutter mechanism in front of the opener, it is possible to implement a player that is highly safe as a player and does not affect the opener operation window. . In the above embodiment, the reversing mechanism is realized by a reversing spring, so that no load is applied to the insertion of the case, but the function of not applying a load is not limited to the reversing spring. For example, a configuration is also possible in which when the case is inserted, the stopper works in the open position of the shutter plate and does not apply any load to the case.

Effects of the Invention As is clear from the above description, according to the present invention, there is provided an expanding means for expanding an opening of a disc case having an opening at one end for storing a disc on which a signal has been recorded; a guide means having an insertion port for guiding the guide to a predetermined position;
The opening/closing means is pivotally supported by the guide means, and opens so that the opening can engage with the expanding means when the disc case is inserted, and closes so as to prevent engagement with the expanding means when the disc case is removed. Therefore, by making the opener non-touchable in appearance, extremely high safety can be achieved by preventing the opener from malfunctioning.

Furthermore, the opening/closing means is provided with reversing means for pulling in the first direction and the second direction, and at a position where the expanding means engages with the disc case to expand, it is pulled in the first direction, and the expanding means is pulled in the first direction. If the shutter is pulled in the second direction at the position where it does not engage, the friction between the shutter and the case will not increase the insertion force of the disc case, and the disc can be inserted and removed with a light operating force. can get. This is very effective, for example, in the sense that it increases the reliability of shooting out for players that have been added with the function of allowing the player to shoot out the case.

Furthermore, if the opening/closing means is engaged with the opening/closing prevention means provided in the guide means and the opening/closing prevention means is released in conjunction with the passage of the disc case through the insertion slot, the predetermined disc Since it is difficult to operate the shutter plate outside of the case, double safety can be obtained by preventing the opener from malfunctioning.

[Brief explanation of the drawing]

Figure 1 is a configuration diagram of a disc case used for existing video discs, Figure 2 is a perspective view of a conventionally used opener, Figure 3 is a sectional view of the opener in operation, and Figure 4 is the opener. -, the plan view of Figure 6 a and b is its opener.
The cross-sectional view during the opening operation, Figure 6, is one embodiment of the present invention.
Recording disc 1...Disc case, 32
... Base, 41 ... Expansion means, 60 ...
...Shutter plate, 51...Insertion slot, 57...
...Shutter stopper. Name of agent: Patent attorney Toshio Nakao and 1 other person
1 Figure 2 Figure 3 (2) Figure 6 B Figure 7 6?

Claims (3)

[Claims] (1) An expanding means for expanding the opening of a disc case having an opening at one end for storing a disc on which a signal is recorded, and a guiding means having an insertion opening for guiding the disc case to a predetermined position. , which is pivotally supported by the guide means, so that when the disc case is inserted, the opening opens so as to be able to engage with the expansion means, and when the disc case is removed, it is prevented from engaging with the expansion means. A recording disk reproducing device having an opening/closing means for closing. (2) The opening/closing means includes a reversing means that pulls in the first direction and the second direction, and at the position where the expanding means engages with the disc case to expand, the opening/closing means is pulled in the first direction, and the opening/closing means is pulled in the first direction. 2. The recording disk reproducing apparatus according to claim 1, wherein the expanding means is pulled in the second direction at a position where it does not engage with the disk case. (3) The opening/closing means is engaged with an opening/closing prevention means provided in the guide means for preventing opening/closing, and the opening/closing prevention means is released in conjunction with the passage of the disc case through the insertion slot. A recording disk reproducing apparatus according to claim 1, characterized in that: