KR830000031B1 - Video disc record insertion and withdrawal device - Google Patents

Abstract

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Description

Video disc record insertion and withdrawal device

1 is a front view of a video disc player according to the present invention.

2 is a side view of a part of the video disc player of FIG.

3 is a plan view of the video disc player of FIG. 1, with the lid removed and detailing the bottom thereof.

4 is a cross-sectional view of a video disc protective cover suitable for use with the video disc player of FIG.

5 and 6 are cross-sectional views of the protective cover of FIG. 4 taken along lines 5-5 and 6-6 of FIG. 4, respectively.

7 to 10 show a series of operations for inserting and withdrawing a video disc housed in a protective cover into the video disc player of FIG. 1 without directly handling the stored video disc of the protective cover.

FIG. 11 shows an apparatus for opening the lid of the video disc player of FIG.

FIG. 12 shows a device for tilting a guide device to an ascending position in the video disc player of FIG.

FIG. 13 shows how the video disc is returned into the protective cover when the protective cover is inserted into the video disk player of FIG.

TECHNICAL FIELD The present invention relates to a video disk device, and more particularly, to a device for inserting a video disk into a reproducing device while being stored in a protective cover and withdrawing the video disk device from the video disk device.

The video disk system is John K. Described in US Pat. No. 3,842,194 to Mr. Clemens, in the apparatus described herein, the information track is constructed by forming spiral grooves in the surface of the disc record, and the bottom of which forms various geometric shapes. The disc record is made of an insulating material covering a coating of conductive material.

During record reproduction, a change in capacity between the electrode and the conductive coating of the disc record coupled with the needle moving along the groove is detected as the disc record rotates by the support turntable to cause the record information to be reproduced.

In a Clemens type apparatus, continuous groove lines are formed on the surface of the video disc in a relatively narrow interval for recording and reproducing for a predetermined time (e.g., 4.5 μm for the groove line density of 5,555 gpi). In addition, the signal element at the bottom of the groove is relatively thin (for example, the signal element length is 0.3 to 0.8 μm and the depth is 0.10 to 0.15 μm).

These video disks have a serious problem of accumulation of dust. When the video disc is exposed to atmospheric dust in high temperature and high humidity conditions, the accumulation of this dust becomes more serious. Therefore, it is desirable to provide a lid for storing a video disk in a state of protecting it from dust during storage or handling.

Video discs of this type are susceptible to damage (e.g., scratches, fingerprints, etc.) while being handled by hand. Therefore, a video disc stored in a cover can be inserted into a playback device without the user having to handle the video disc directly. It is desirable to provide a protective cover that can be pulled out.

The player according to the present invention is composed of a housing formed with an opening having a size for inserting a record protective cover into the player. The housing is equipped with a guide device for moving between the raised position and the lowered position. The guide is aligned in line with the exit when in the raised position. While the cover is fully inserted into the player, a fixture installed in the player is inserted into the cover. The fixing device is operated in the first state and the second state.

When the fixing device is in the first state, the lid containing the disc record can be fully inserted into the player.

An apparatus is provided for changing the state of the fixing device that changes between the first state and the second state as it is engaged with the protective cover while the protective cover is completely inserted from the player.

The fixing device allows the disc record to be mounted on the guide apparatus after being taken out while leaving the disc record in the player from the position where the lid containing the disc record is completely inserted while in the second state.

The player is provided with a device for moving the guide device from its up position to the down position and then for moving the disc record from the guide device to the player's turntable.

According to another feature of the invention, the device for moving the guide device operates by moving the player lid between the open position and the closed position.

According to another feature of the present invention, the fixing device can be operated in the third state in addition to the operation in the first state and the second state. Such a player is configured with a device for changing the state of the fixing device to the third state as the lid moves from the open position to the closed position. As the fixing device changes from the second state to the third state, the disc record lying on the guide device is transported to the turntable while moving the guide device from the raised position to the lowered position.

As the player lid moves from the closed position to the open position, the relative change device operates to return the fixing device to the state just before the last change to the third ecology.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 shows a video disc player 20 with a lid 21 shown open. The lid 21 is formed with an opening 22 to allow insertion of the disc when the lid is in the open position. The opening is sized to allow the record cover to be inserted into and withdrawn from the player. As can be seen from FIG. 1, the player has a control panel 23 provided with a play time indicator 24 and a set of push buttons 25. As shown in FIG.

2 and 3 show a turntable 26 for rotating a video disc placed thereon during recording and reproduction. The turntable 26 is provided with a central axis 27 into which the center hole of the video disk is fitted when the video disk is placed on the turntable.

As shown in FIG. 3, the flat plate 28 is rotatably mounted by the hinges 29 and 30 between its rising position (FIG. 2) and its lowering position (FIG. 3). Flat plate 928 is provided with a surface 31 to properly position the video disc when he is in the raised position.

As shown in FIG. 3, the player is composed of a needle arm carriage 32 which allows the needle to run on a video disc placed on the turntable 26 during recording and reproduction. The flat plate 28 is formed with cutouts 33 and 33a so that the carriage 32 can travel without any obstacle on the video disk placed on the turntable. In addition, the flat plate 28 is formed with a central opening 34 which allows the turntable 26 to protrude through it when he is in the lowered position.

The player's housing 36 is equipped with a push button 35 with the lid 21 open. The player is provided with a pair of tracks 37 and 38, which form channels 37a and 38a, which guide the shroud while the record shroud is fully inserted into the player through the doorway. The track 37 is firmly fixed to the flat plate 28. However, the track 38 is hingedly mounted to the carriage 32 and can move with it. If the track 38 is fixed to the pallet, it will fail when the pallet 32 is moved up to the video disc placed on the turntable during recording and playback.

A fixing device 39 having a pair of fixing elements 40 and 41 is mounted at the rear end of the player. As shown in FIG. 3, the player's housing 36 is provided with a pair of wedge-shaped hooks 42 and 43, which are secured by pressing the cover to open while the cover is fully inserted into the player. The elements 40 and 41 allow easy entry into the lid.

4, 5 and 6 show a protective cover 44 for a video disc suitable for use with the video disc player of FIGS. The lid 44 is in communication with a pair of parallel panels 45 and 46 that form a cavity 47 for receiving the video disk, and the cavity that allows the video disk to enter and exit the protective cover. It consists of one opening 48. Panels 45 and 46 have a constriction passage 49 between cavity 47 and opening 48. The pair of cleaning pads 50 and 51 are fixed to the constriction passages of the panels 45 and 41 to clean them when the video disk is inserted into or removed from the cover. The cover 44 is coupled to the bead portion of the received video disk edge (circular cross section formed on the disk edge) to prevent the video disk from accidentally falling out of the cover 52 And 53 are provided.

The wiping pads 50 and 51 may be made of a soft material such as velvet, nonwoven polyester (product of DuPont), polyurethane foam (product of Slot Paper), and the like.

As already mentioned above, the fixing device 39 is composed of a pair of fixing elements 40 and 41. The state of the locking device is changed to a partially open state (Fig. 7), a closed state (Figs. 8 and 9) and a fully open state (Fig. 10). When the lid 21 is open, the channels 37a and 38a align with the doorway 22 so that the protective cover 44 can be easily inserted and withdrawn from the player (FIG. 2). The plate 28 is equipped with a funnel-shaped portion (FIG. 2) 66 near the entrance 22, which leads the edges 55 and 56 to the channels 37a and 38a. (Fig. 6),

7 shows a state in which the protective cover 44 containing the video disc is partially inserted in the player. As shown in FIG. 7, the wedge-shaped ridges 42 and 43 (FIG. 3) have a front surface of the panel 45 and 46 so as to easily fit into the fixed elements 40 and 41. Let the wealth open. When the fixing device 39 is in the partially open state (Fig. 7), if the cover 44 is sufficiently inserted into the player, the fixing elements 40 and 41 will have the periphery of the video disk 54 therebetween. To come.

When the protective cover 44 is fully inserted into the player, the front edge of the panel 54 is pressed against the block 57 so that it is pivotally connected about the pin 60 to the connecting member 67 pivotally around it. As a result, the state of the push-on and push-off switch 58 is changed from the retracted state (FIG. 7) to the advanced state (FIG. 8). When the state of the push-on and push-off switch 58 is changed from the retracted state to the advanced state, the operating member 59 is connected to the pin 60 by the connecting member 67 from the position of FIG. Rotate clockwise in the position of degrees. By the rotation of the operating member 59, the fixing element 41 is rotated counterclockwise from the position of FIG. 7 to the position of FIG. 8 with respect to the pin 61 fixed to the fixing element 40. FIG. . When the fixing device 39 is closed by the rotation of the fixing member 41, the fixing elements 40 and 41 cover the lid from the insertion position after the cover containing the bidet disk is completely inserted into the player. The video disk 54 retained therebetween is not drawn out from the player during the withdrawal and the video disk 54 is placed on the positioning surface 31 of the flat plate 29 after the cover recovery.

The push-on and push-off switch 58 may use model number A9T 4162-6 manufactured by Porter and Broomfield, Inc., of Princeton, Indiana.

When the lid 21 is closed, the block 62 (FIG. 2) fixed to the lid comes into contact with the flat plate 28 to move the flat plate 28 from the raised position (FIGS. 1 and 7 to 9). Rotate to the lowered position (FIGS. 2 and 10). When the plate 28 rotates from the raised position to the lowered position, the portion 69 of the plate 380 and the portion 68 of the fixed element 40 are coupled to each other, so that the pins 60 of the fault element 40 are removed. It rotates clockwise from the position of Fig. 9 to the center of Fig. 10 by the rotation of the fixing device 40 by the rotation of the fixing device 40 from the closed state of FIG. Is changed.

As described above, as the failure device 39 changes from the closed state of FIG. 9 to the fully open state of FIG. 10, the video disk 54 is removed from the state held between the fixed elements 40 and 41. FIG. After being placed on the positioning surface 31 of the flat plate 28, the flat plate 28 is transferred to the turntable 26 while moving from the raised position to the lowered position (FIG. 10).

If the pushbutton 35 (FIG. 3) is pressed even after the end of the recording and playback, the lid 31 is raised to the open position by the spring 63 (FIG. 11). When the lid 21 is opened, the spring 64 (FIG. 12) connected to the member 65 coupled with the flat plate 28 moves the flat plate 28 together with the lid from the lowered position (tenth) to the raised position ( (See Fig. 9). This actuation of the plate 28 is transmitted to the portion 68 of the fixing element 40 which engages its portion 69, whereby the fixing element 40 is positioned in FIG. 10 about the pin 60. Is rotated counterclockwise in the position of FIG. By rotating the fixing element 40 counterclockwise as described above, the fixing device 39 is changed from the fully open state of FIG. 10 to the closed state of FIG.

As the state of the fixing device 39 changes from the fully open state (FIG. 10) to the closed state (FIG. 9), the flat plate 28 moves from the lowered position (FIG. 10) to the raised position (FIG. 9). The video disk 54 (FIG. 10) on the turntable 26 is placed on the flat plate 28 (FIG. 9).

As shown in FIG. 13, the flat plate 28 is equipped with a funnel-shaped portion 66 in the vicinity of the doorway 22, so that the peripheral portion of the video disk 54 lying on the flat plate 28 protrudes. do. Therefore, when the blank cover 44 is inserted into the player, the peripheral portion of the video disk 54 is automatically brought in. When the cover 44 is fully inserted into the player, (1) the video disk 54 is completely stored into the cover (Fig. 8), and (2) the push-on and push-o type switch 58 is operated by the action of the panel 45. ) Is changed from the advanced state (FIG. 8) to the retracted state (FIG. 7). By changing the push-on and push-off switch 58 from the advanced state to the retracted state, the operating member 59 rotates counterclockwise from the position of FIG. 8 to the position of FIG. 7 about the pin 60. do. As the operating member 59 rotates as described above, the fixed element 41 rotates clockwise from the position of FIG. 8 to the position of FIG. 7 with respect to the pin 61 installed thereon. By the rotation of the fixing element 41 as described above, the fixing device 39 is brought into the closed state (FIG. 8) and partially opened (FIG. 7). In this case, the fixed elements 40 and 41 allow the retaining video disc to be withdrawn from the player together with the lid.

Receiving the video disk 54 in the cover 44 allows the stoppers 52 and 53 to engage with the video disk 54 so that the disk is not withdrawn from the player while being partially stored in the protective cover. . In this way, the video disc is inserted into the player and withdrawn from the player, partly stored in the protective cover.

Hereinafter, the detailed configuration of the embodiment will be described collectively. The fixed element 41 is pivotally connected to rotate about the pin 61 mounted on the fixed element 40. The pin 70, which is fixed to the fixed element 41, is housed snugly in a jade slot 71 formed in the actuating member 59. The flat plate 28, the fixed element 40 and the operating member 59 are rotatably assembled around the pin 60. As shown in FIG. By the action of the portion 68 of the stationary element 40 disposed in engagement with the portion 69 of the plate 28, the stationary element 40 rotates like the plate 28.

The block 57 is fixed to one end of the connecting member 67, and the connecting member 67 is firmly fixed to the operating member 59 that rotates around the pin 60. The other end of the actuating member 59 is provided with a slot for fitting the contraction portion arranged at one end of the light-off member 72 of the actuating switch 58 of the push-on and push-off switch 58. Each time the push-on and push-off switch 58 is pressed, it is switched between the retracted state (Fig. 7) and the advanced state (Figs. 8 to 10).

Claims (1)

A housing having a doorway sized to allow the cover to be inserted into and withdrawn from the player, and a turntable and cover to be rotatably mounted within the housing to support the video disc during playback so that it can enter the cover while fully inserted into the player. A player having a fixing device installed in the player for reproducing a pre-recorded signal from a disc record stored in and out of the protective cover, wherein the protective cover is engaged with the protective cover while fully inserted into the player. And a device for converting the state of the fixing device from one state to another, and the video disks drawn from the protective cover are transferred to the turntable so that the disk can be rotated by the turntable after being separated from the fixing device. Inside moving between locations Video disc record insertion and retrieval device configured as internal device.

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