DE2756843A1 - DISC REMOVAL MECHANISM ACTUATED BY A PACKAGE FOR A VIDEO DISC PLAYER - Google Patents

Description

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ts ' ⁵ ' * w * ". β-' 27568A3

3n ^ Q ^ A DIpI. - »ng. Petar Schute

USSN 801 602 'DW-Infl. Wollgang hay eggs

filed May 31, 1977 8Munich86. P.O. Box 86068

RCA Corporation New York, N.Y., V.St.A,

Disk pull-out mechanism operated by a package for a video record player

The invention relates to a device according to the preamble of claim 1. It relates generally to an optical disc player and is particularly suitable for use in a Handling device, which is an insertion of an optical disc in the optical disc player and removal of the optical disc from this allowed without direct manipulation of the optical disc by the user.

An optical disk device is described in U.S. Patent 3 84-2W. In one embodiment of the known device , an information track is formed by geometric variations in the bottom of a fine spiral-shaped groove which is located on the surface of a recording disk. The recording disk has a deposit of a dielectric material , which is a layer of conductive

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Material overlaid. During playback, there are capacitive changes that occur between one in one passing through the groove The electrode located in the stylus and the conductive layer of the recording disk arise when detected the recording disk is rotated by means of a turntable supporting it in order to reproduce the recorded information.

In the known optical disc device, the successive revolutions of the groove are in order to achieve a reasonable playing time provided at a relatively close distance from each other on the surface of the image plate (for example 4.5 micrometers, corresponding to a groove density of 218,701 grooves per mm), and the signal elements in the groove bottom are relatively small (for example the signal element length is 0.3 to 0.8 micrometers and the signal element depth is 0.10 to 0.15 micrometers).

The accumulation of dust on such optical disks is a significant problem. The problem of dust accumulation is especially serious when the optical disk is exposed to atmospheric dust and at the same time high temperature and high humidity is exposed. Furthermore, these optical disks tend to be fingerprinted during handling, for example by scratches and the like to be damaged.

The present invention is based on the object of a simple and to provide effective apparatus which overcomes the problems identified, and in particular packaging It is provided that an optical disc is completely in a dust-proof environment during its storage and handling includes and inserting an enclosed optical disc into a reproducing device and removing the optical disc from this made possible without direct handling of the image plate itself by the user being necessary.

This task is achieved with a device according to the preamble

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of claim 1 solved according to the invention by its characteristic features. Further invention features result from the others Claims.

Means for inserting an optical disc into an optical disc player as well as removal therefrom without direct manipulation of the optical disc itself by the user are the subject matter of the patent application P ... "Optical disk handling device for an optical disk player" (representative file number: RCA 714-06) as well as the patent application P ... "Optical disk insertion and removal device for a video disk player "(Agent reference number: RCA 71314 ·) by the same applicant.

In the devices described in these applications, a disk removal mechanism enters with the edge of the disk Intervention to prevent its removal from the turntable during the retraction of the packaging after a full one Packaging has arrived in a fully inserted position in the turntable.

According to the invention described herein, it is not necessary for the disk pull-out mechanism to be engaged with the disk occurs to cause the plate to be pulled out of its packaging.

The disk pull-out mechanism according to the present invention is suitable for use in an apparatus for reproducing recorded signals from a recording disk, which is removably arranged in a protective packaging, the one casing and one removably arranged in this Plate holder includes. The record player housing has an insertion slot which is dimensioned such that it inserting a disk package into the record player and removing it therefrom is allowed. The record player points guides aligned with the insertion slot to facilitate insertion and removal of the package. A plat-

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shape, which is mounted in the housing G _e and below the guides is movable between a raised position and a depressed position. A disk pull-out mechanism attached to the platform has ratchets which are operable to change between a retracted state and an extended state in response to the arrival of the package in a fully inserted position in the disk player. The ratchet can, when placed in the retracted state, allow the package to arrive in the fully inserted position. In contrast, the ratchet arms prevent removal of the disc holder from the turntable during a retraction of the cover from the fully inserted position, whereby the retraction of the cover subsequent to the arrival of the filled package in the fully inserted position in a retention of the enclosed when arranged in the extended state Disk in the turntable results. The plate holder is designed in such a way that the retained plate can rest on the platform upon completion of the retraction of the casing. The turntable includes means for depressing the platform to bring about a transfer of the retained disk from the platform to the turntable of the turntable.

The invention is illustrated schematically below with reference to in the drawing The illustrated embodiments are explained in more detail.

1 shows a perspective illustration of a protective packaging with a casing and one removably arranged therein Disc holder, the protective packaging being suitable for use with an optical disc player, which includes a disk pull-out mechanism according to the present invention,

Figures 2 and 3

Top views of the panel holder of the casing according to FIG. 1,

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Figures 4 and 5

Plan views of a modified plate holder and a modified casing,

Pig. ^ a another Ausfübxungsfonn the plate holder, which is suitable for use together with the modified casing according to FIG. 5,

6 shows in detail a disk holder release mechanism; which is suitable for use in the protective packaging according to FIGS. 1 to 3 and FIGS. 4, 4a and 5 is applicable

Fig. 7 is a plan view of an optical disk device incorporating the present invention;

Figures 8 and 9

cut-away side views of the optical disc device according to FIG. 7 with a movable platform which is shown in a depressed or a raised position,

Figures 10 and 11

in detail a disk pull-out mechanism, which in a retracted state or an open state is arranged

Fig. 12 is a side view of an optical disk device which is a second embodiment of the disk pull-out mechanism according to the present invention and has a modified platform arm raising / lowering mechanism,

Figures 13 to 15

Fig. 4 is an end view, a front view and a top view, respectively Door mounting arm arrangement for use in the

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converted image disk device according to FIG. 12,

Figures 16 and 17

a side view hzw. Figure 3 is a top plan view of a platform linkage assembly to interact with the door mounting arm arrangement according to FIGS. 13 to 15 and for use in the modified optical disc device according to Fig. 12,

FIG. 18 shows, in detail, devices for guiding a packaging into the modified optical disk device according to FIG. 12 in and a packaging ejection mechanism,

Figure 19 is a bottom plan view of a movable platform for use in the modified optical disk device according to FIG. 12,

Figures 10 and 21

Figure 4 is an end view and a top view, respectively, of a left center lift block assembly attached to the Platform according to FIG. 19 attached and usable in the modified optical disk device according to FIG. 12 is,

Figures 22 and 22A

a top view and an end view of a lifting block located at the front left, which is attached to the platform according to FIG 19 is attached and can be used in the modified optical disk device according to FIG. 12,

Figures 23 and 23A

Fig. 19 is a plan view and an end view, respectively, of a rear lift block attached to the platform of Fig. 19 and in the modified optical disk device

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according to Pig. 12 can be used,

24 shows in detail a second embodiment of the invention Disk pull-out mechanism,

FIG. 25 shows a section 25-25 from FIG. 24 and FIG FIG. 26 shows a section 26-26 from FIG. 25.

1 shows, in a perspective exploded view, a protective plate packaging 50 which is suitable for use in an image plate device described below. As shown, the plate packaging 50 comprises an envelope-like casing 52 and a plate holder 54 or the casing 52 according to FIG. 1. The casing 52 has a terminal access opening 56, the dimensions of which allow the plate holder 54 with an image plate 58 to slide freely through the access opening 56. The protective packaging 50 is the subject of patent application P ... "image plate ^{packaging 11} (representative file number: ROA 71845) by the same applicant.

The casing 52 has a pair of channels 60 and 62 for receiving of a pair of ribs 64 and 66, respectively, which are attached to the disc holder 54 for precisely locating it and the optical disc 58 are provided in the casing 52. The ribs 64 and 66 have wedge-shaped end sections 68 and 70, respectively, for introduction inserting the panel support 54 into the casing

As shown in FIG. 3, there are a pair of cleaning pads 72 and 74 made of suitable soft material (e.g. velvet)

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attached to walls 76 and 78 forming casing 52 to prevent wiping of optical disc 58 as it is being inserted into to effect the casing 52 and its removal therefrom. Other suitable materials for the mop pads 72, 74 are, on the one hand, lint-free, non-woven polyester paper from Dupont and, on the other hand, polyurethane foam from the company Scott Paper Go., Foam Division.

The thickness of the plate holder 54 corresponds approximately to the thickness the bead of the image plate 58. As shown in Fig. 2, the plate holder 54 has a generally circular through opening 80, the diameter of which is slightly larger than the diameter the image plate 58. The plate holder 54 allows access to both surfaces of the image plate 58 without that the arrangement of the optical disc 58 within the disc holder 52 would have to be changed somehow. The disk holder 54 as well as the image disk 58 are within the casing 52 supported by the inner surfaces of walls 76 and 78.

When the bracket 54 is fully inserted into the casing 52, a front portion 82 of the bracket 54 extends into the Access opening 56 and closes it to prevent dust and other contaminants from entering the image plate 58 to prevent enclosing cavity of the casing 52.

The front part 82 of the bracket 54 has a hole 84 for Including means for pulling out the optical disc 58, the hole 84 being accessible in a direction indicated in FIG is essentially parallel to the direction of the inward and outward direction of the holder 54 in the casing 52.

As shown in Figures 2 and 3, the bracket 54 includes Pair of latches 86 and 88, which can be received in recesses 90 and 92, respectively, provided in the casing 52, if the bracket 54 is fully inserted into the casing 52. the

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Locks 86, 88 prevent accidental sliding out the enclosed optical disc 58 from the casing 52.

Figures 4 and 5 contain plan views of a modified one Bracket 94 or a modified casing 96 · As in 4, the modified holder 94 consists of a backbone-containing part 98 made of plastic and a through a wire molding formed annular part 100. The wire molding 100 is in the backbone-like part 98 made of plastic insert molded

Another manufacturing method using a wire fitting uses an extruded plastic tube 101. The Ends of the plastic pipe 101 can be glued to the backbone-like part, for example, around the ring-shaped part To form part according to FIG. 4a.

The casing 96 has recesses 102 and 104- for receiving of latches 106, 106 provided in the spine-like portion 98. A pair of soft mop pads 110 is attached to the inner surfaces of the walls forming the enclosure 96 for cleaning the imaging plate 58 during its Add and remove. The backbone-like part 98 has a hole for receiving a means for pulling out the image plate 58. The casing 96 has recesses 116 and 118 for receiving end sections 120 and 122 of the backbone-like part 98.

lh FIG. 6 is an alternative possibility for a releasable fastening of a flattening holder 124 to a casing 126 illustrated. The top wall of the casing 126 is broken away to reveal the underlying parts Flattenhalterung 124 has a pawl-like part 128, which is arranged for cooperation with a part 130, that within the enclosure 126 for movement between

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an extended position as shown in FIG. 6 and a depressed position (not shown) slidably attached is. The sliding part 130 prevents removal of the panel holder 124 from the casing in the extended position 126. On the other hand, the displaceable part causes' ßO in the depressed Position that the pawl-like part 128 is pivoted in order to remove the plate holder 124 from to allow the ua clothing 126. A spring 32 is provided to bias the displaceable part 13O so that it is extended Takes position. As explained below, means are provided in the disc player for depressing of the sliding part 130 during the arrival of the package 50 in the fully inserted position to the plate holder 124- release.

Fig. 7 is a top plan view of an optical disk player 136 of the type disclosed in U.S. Patent 3,842,194. The disk player 7 is shown with the cover removed. Figures 8 and 9 are cross-sectional views of the optical disc player 136 according to FIG. 7 along the center line of this, with a dust protection flap 138 in a closed or open one Position is shown.

The disk player 136 has a contaminant-free chamber 140, into which the disk package 50 by a Insertion slot 142 is inserted. The insertion slot 142 has dimensions which allow unimpeded penetration allow disk package 50 through slot 142. The dust cover 138 is pivotally attached to the turntable housing 144 for movement between the closed ones Position, which denies entry to chamber 140 (FIG. 8), and the open position, which allows entry to the chamber 140 allowed (Fig. 9). The dust cover 138 serves to protect the chamber 140 from contamination by dust or other To protect foreign bodies

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The record player housing 144 is provided with a pair of channels 146 and 148 which act as guides when inserting the Disc packaging 50 in the turntable 136 and for removing it serve. The channels 46 and 148 are in one Angle to the turntable housing 144 arranged such that they are aligned with the insertion slot 142 at the front end of the turntable 144.

The optical disc player 136 also has a turntable 150 for rotatably supporting the optical disc 58 during the Playback on. The turntable 15O has a central one Spindle 152, which is in the centering opening of the image plate 58 is recordable. A scanning arm support, which carries a signal pickup device, is for better clarity sake not shown in the drawing. The scanning arm support moves the pickup device across the disk 58 on the turntable 150 during playback.

A platform 154 is pivotally mounted about shaft 156 for movement between a depressed position (Fig. 8) and a raised position (Fig. 9). The platform 154 has a pair of side rails 158 and 160 which are connected to one another by a cross member 162 at the rear end of the disk player 136.

As shown in Figures 7, 10 and 11, a disk extraction mechanism 164 is provided with a pair of pawl arms 166, 168, which are arranged pivotably about bolts 170 and 172, respectively are attached to the cross member 162 at the rear end of the optical disc player 136. As can be seen from Fig. 9, the Ratchet arms 166 and 168 aligned with the centerline of channels 146 and 148 when platform 154 is raised Takes position. The pawl arms 166 and 168 are lowered into the hole 84 provided in the disk holder 54 when the disk package 50 is in the fully inserted position in the disk player 136.

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The disk pull-out mechanism 164 has a paddle-like one Lever 174 on which is pivotable about a bolt 176 which is attached to the transverse part 162. The paddle-like lever 174 is rotated clockwise over an angular range, when the disc package 50 in the optical disc player is fully inserted. This rotation of the paddle-like lever 174 causes a ratchet gear 178, which on the transverse part 162 is rotatably mounted, one tooth advances clockwise, which is attached to a paddle-like lever 174- retractable bolt 180 takes place. Such rotation of the ratchet gear 178 causes a square cam 182, which is disposed between the pawl arms 166 and 168 and attached to the ratchet gear 178 to a Step (for example 4-5 °) advances clockwise Such a forward stepping of the square cam 182 causes that the pawl arms 166 and 168 between an extended condition (Fig. 10) and a retracted condition (Fig. 11) change. A spring 184 connects the rear ends of the pawl arms 166 and 168 to provide a permanent one Ensure engagement between these and the square cam 182.

When the package 50 is withdrawn from the disk player 136 causes a spring 186 that the paddle-like lever 174 returns to its position according to Figures 7 and 10. The disk pull-out mechanism 164 has a pawl 188 for preventing reverse movement of the pawl gear 178, when the paddle-like lever 174 returns to its position according to FIGS. 7 and 10 and Fig. 11 it can be seen that although pawl 188 moves pawl gear 178 in the opposite direction clockwise) direction, pawl 188 prevents forward movement (clockwise) of pawl gear 178 allows. The bolt 180 is made retractable to allow the paddle-like lever 174 to be in its place in the figures and 10 returns without being required

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would be that the ratchet gear 178 rotates in the reverse direction.

Thus, every time the package 50 is in the disk player 136 is fully inserted, the state of the pawl arms 166 and 168 between the extended state (Pig. 11) and the retracted state (Fig. 10) changed. The puncture way of the disk pull-out mechanism 164 will be explained in detail below.

The video disc player 136 also includes a platform lever gear assembly 190 for causing the platform 154 to move between the depressed position (FIG. 8) and the raised position (Fig. 9) depending on the movement of the flap 138 between the denied entry Position (Fig. 8) and the position allowing access (Fig. 9). The platform lever gear assembly 190 includes a Pair of levers 192 and 194 attached to door 138 for rotation therewith. The platform lever gear 190 also includes a pair of springs 196 and 198 which define the free ends of levers 192 and 194, respectively, and the side rails Connect 158 or 160 with each other. A pair of stop bolts 200 and 202 are attached to the turntable housing 144 to ensure that the platform 154 is up to a Exact height is raised when the door 138 is opened as a result of the insertion of the package 50 into the optical disc player 136, in the manner of FIG. 9. The springs 196 and allow the flap 138 to override when the packaging 50 is fully inserted into the video disc player 136 so that the platform 154 rises to the exact height without that this would require precision parts.

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A number of spring loaded lift blocks 204-210 are pivotally attached to the side rails 158 and 160 for a purpose explained below. A number of wire springs (e.g. 212 and 214) are provided for Tensioning the lift blocks (e.g., 208 and 210) towards a lifted position, as in Figures 8 and 9 shown. A number of bolts (e.g. 216 and 218) are attached to the side rails (e.g. 160) for the Receiving in openings (for example 220 and 222) which are provided in the lifting blocks (for example 208 and 210) so that the top surfaces of the lift blocks are precisely positioned relative to platform 154 (Figures 8 and 9) Portion 224 (FIG. 7) connects rear lift blocks 206 and 208.

The mode of operation of the device is described below in connection with FIGS. 7 to 11. When the packaging 50 containing an optical disk 58 inserted through the insertion slot 142 in the optical disk player 136 them up the flap 138, causing the platform 154 moves up to the position shown in FIG. Inserting the package 50 into the video disc player 136 causes lift blocks 204-210 to retract to the perimeter of platform 154, thereby allowing the package 50 arrives in the video disk player 136 in a fully inserted position. When the packing 50 in the full inserted position in the disk player 136 arrives, kick the pawl arms 166 and 168 in the hole 84 of the plate holder 54 a (Fig. 10).

The arrival of the package 50 in the fully inserted position in the disk player 136 causes the pawl arms 166 and 168 switch from the retracted state (FIG. 10) to the extended state (FIG. 11), whereby the disk holder 5 ^ is locked to the platform 154. When the dressing 52 is then withdrawn, on the one hand the pawl arms 166 and 168 hold the one that carries the image plate 58

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Disk holder 54 back into disk player 136, and to others cause the wire springs (e.g., 212 and 214) to raise the lifting blocks 204-210 to the desired level Return position. Thus, the disc holder 54 and the optical disc 58 are retained in the optical disc player 136, wherein place them on lift blocks 204-210 at an appropriate height (i.e. at which their centerlines align with the centerline of the channels 146 and 148 are aligned) rest upon completion of the retraction of the casing 52.

Additionally, the retraction of the cover 52 allows the Disk player 136 that flap 138 is set to the no-entry position according to Pig. 8 moves. Such a one Movement of the flap 138 causes the platform 154 moves to the depressed position shown in Fig. 8, thereby transferring the image plate 58 from the lift blocks 204 to 210 is brought about to the turntable 150 for the playback process.

When an empty case 52 is inserted into the optical disc player 136 through the insertion slot 142 (Pig. 9), the door 138 is opened causing the platform 154 to rise to the raised position (Fig. 9). When the platform 154 goes up, the lifting blocks 204-210 raise the disc holder 54 and together with it the optical disc 58.

When the platform 154 reaches the raised position (Fig. 9), the lifting blocks 204-210 support the plate holder 54 and the image plate 58 so that their center lines with the Centerline of the empty casing 52 align, which causes the disc holder 54 and the optical disc 58 return to the casing 52 during its insertion. The alignment device is the subject of patent application P ... "Disk support and alignment device for a video disk player" (representative file number: RCA 71379) by the same applicant.

When the case 52 is fully inserted into the disk player 136 it causes the pawl arms 166 and 168 of FIG

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change the extended state (Pig. 11) to the retracted state (Fig. 10), releasing the plate holder ^ A- . When the case is removed from the disc player 136, the latches 86 and 88 (FIG. 2) cause the enclosed disc holder 54 and disc 58 to exit the disc player 136.

The device described above thus enables an optical disc to be inserted and removed from the optical disc player this can be removed without direct manipulation of the image plate by the user.

An additional advantage of this device is that it prevents the accidental insertion of a plate containing it Wrapping in the turntable is always prevented if a record is already inside the turntable is located. This is due to the fact that the disc holder is in the package containing the disc collides with the disk inside the turntable when attempting this.

Such a disk handling device is the subject of patent application P ... "Optical disk handling device for a video disk player "(Agent reference number: RCA 71337) by the same applicant.

A second embodiment of the optical disc player according to the present invention will be described below in connection with FIG FIGS. 12 to 26 explained in more detail. Fig. 12 shows a side view of a modified optical disc player 230. How As can be seen, a flap 232 is fastened to a fastening arm arrangement 234, which can be pivoted by means of a bolt 264 is attached to the turntable housing 236.

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Figures 13, 14 and 15 show the end view and front view, respectively and top view, respectively, of the pivoting mounting arm assembly 234- which is on the left side of the video disc player 23Ο is attached. A similar mounting arm arrangement is pivotally attached to the right side of the optical disc player 230. The mounting arm assembly 234- has a pair of plate-shaped parts 238 and 240 which are attached to a flap attachment arm 242.

As shown in Figure 12, there is a platform lever gear assembly 244 pivotally attached to the turntable housing · 236 by means of an outrigger mounting arm 246.

Figures 16 and 17 show the end and top views, respectively, of the platform lever gear assembly 244 which is on the left of the optical disc player 230 is attached · A similar one Lever gear assembly is on the right side of the video disc mirror 230 provided. The platform lever gear assembly 244 has levers 248 and 250, which by means of a Rivet 252 are rotatably attached to one another. The ends of the levers 248 and 250 are connected to one another by a spring 254. The levers 248 and 250 form an elongated base 256, in which a bolt 258, which is fastened to the plate-shaped parts 238 and 240 (FIGS. 13 to 15), is displaceable is recorded.

When a disk package 260 in the modified video disk player 23O is inserted through an insertion slot 262, the flap mounting arm 242 is pivoted about the bolt 264, causing the distal end of lever 248 to go up. The optical disc player 230 has a pair of rails aligned with the slot 262 for ease of use

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of inserting and removing the package 260. Pig. FIG. 12 shows a guide rail 266 attached to the right side of the video disk player 230. A similar guide rail is attached to the left side of the optical disc player 230. A spring 268 for holding down the image plate 58 is attached to the rail 266. In Pig. 18, a package ejector mechanism 270 is also shown. The package ejecting mechanism 270 ejects the package 260 after the enclosed disc holder is released by the disc pull-out mechanism 164, and ejects the case 52 after the enclosed disc holder * A- is gripped by the disc pull-out mechanism 164.

A platform 272, the bottom view of which is shown in FIG The modified video disc player 230 is mounted for movement between a raised position and a depressed position. The platform 272 has bores 27 * and 276 for receiving bolts (for example 17), which on the lever gear levers (For example, the lever 24-8 according to FIG. 17) are attached.

From Fig. 12 it can be seen that the insertion of the packaging causes in the insertion slot 262 of the video disc player 230,

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-ψ-

that the flap 232 opens, which in turn causes the platform 272 to rise to the raised position. on similarly, pulling the package 260 out of the video disc player 230 causes the platform 272 to collapse moves to the depressed position, which in turn causes flap 232 to close.

The design of the platform raising / lowering mechanism according to Fig. 12 is such that the movement of the platform 272 from the depressed position to the raised position in two Stages takes place. In the first stage the platform is pivoted around its far end, and in the second stage the platform 272 will pivot about its nearby end when the lever gear pins (e.g., the Bolt 278) depending on the insertion of the packaging 260. The lowering takes place in a similar way the platform 272 takes place in two stages.

An advantage of the platform raising / lowering mechanism according to FIG Figure 12, which causes the platform 272 to roll, is that for a given turntable diameter and for a given height the platform 272 must be raised, the dimension of the platform The front and rear are relatively reduced, for example, compared to the platform raising / lowering arrangement according to the figures 7 to 9.

A group of five lifting blocks (a front left lifting block, a front right lifting block, a left central lifting block, a right central lifting block and a rear one Lifting block) are each retractably attached to the platform 272 at locations 280, 282, 284, 286 and 288, respectively. The figures 20 and 21 show the side and top views, respectively, of the left central lift block 290. In FIGS. 22 and 22A, FIG a front left lift block 292 is shown and a rear lift block 294 is shown in Figures 23 and 23A.

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The lifting blocks, when in the retracted position, allow the package to arrive in a full inserted position in the video turntable. On the other hand, when the lifting blocks are in the extended position, they support a retained image plate such that when the platform is in the raised position, the image plate is aligned with an empty package that has just been inserted into the optical disc player through the insertion slot thereby facilitating the return of the retained image plate to the package.

The lift blocks are caused to be in the fully inserted position in the video player upon arrival of the package to move into the retracted state. Tensioning devices (for example, a wire spring 296 as shown in FIG. 20) provided to force the lift blocks to return to the extended position.

A modified disk pull-out mechanism 298 is shown below explained in connection with FIGS. 24 and 26. Fig. 24 is a plan view of the modified disk pull-out mechanism 298. In FIG. 25 is a section 25-25 from FIG and Fig. 26 includes a section 26-26 of Fig. 25. The modified disk pull-out mechanism 298 is on the Platform 272 of the optical disc player 230 shown in Fig. 12 is attached. While using the modified disk pull-out mechanism 298 is explained in connection with the video disk player 230 according to FIG. 12, it should be pointed out that that the disk pull-out mechanism 298 is also suitable for use with the video disk player 136 of FIG Figures 7 to 9

As shown in Fig. 26, the modified disk pull-out mechanism has 298 have a pair of pawl arms 300 and 302 which are pivotable about bolts 304 and 306, respectively. The ratchet arms 3OO and 302 are aligned with the center line of the guide rails (e.g. guide rail 18),

80 98 2 ^ / 07

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when the platform 272 is in the raised position.

A paddle-like lever 308 is by means of a bolt 310 pivotally attached to the platform 272 (Pig. 25). A clockwise rotation of the paddle-like lever 308 causes that a ratchet wheel 312, which is rotatably attached to the platform 272 by means of a bolt 31 *, about a tooth as well clockwise, which is a 3 * 2 an actuating lever 316 takes place, which by means of a bolt 318 is pivotally attached to the paddle-like lever 308. This rotation of the ratchet wheel 312 causes a square cam 320, which is mounted between the pawl arms 300 and 302 and attached to the ratchet wheel 312, by one step (for example * 5 °) advances clockwise · This Advancement of the square cam 320 causes the pawl arms 300 and 302 between an extended and a Change sucked state.

A plate-shaped part 322 is attached by means of a bolt 323 the platform 272 firmly attached. The plate-shaped part 322 has approaches 32 * and 326 for constraining the arcuate Movement of the paddle-like lever 308. A spring 328 is between a projection 330 of the operating lever 316 and a Projection 332 of the fixed plate-shaped part 322 switched to tension the actuating lever 316 and the paddle-like lever 308 so that they return to their positions. The disk pull-out mechanism 298 has a pawl 33 * (Fig. 2 *) to prevent reversal of the movement of the ratchet wheel 312 during the return movement of the paddle-like lever 308. Council springs 336 and 338 (Fig. 26) are provided to the To tension the ratchet arms 300 and 302 in constant engagement with the square cam 320

The paddle-like lever 308 has an extension 340 (Fig. 2 *), which with the front area of a plate package during its arrival in the fully inserted position in the image plate

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The player is engaged to cause the paddle-like lever 308 to move in a clockwise direction.

The method of puncturing the modified video disc player according to FIGS. 12 to 26 basically corresponds to the method of puncturing of the video disc player according to Figures 7 to 9 ·

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Claims (2)

Expectations Λ.) Device for reproducing recorded signals from a recording disk, which is removably arranged in a protective packaging, with a housing which has an insertion slot with dimensions that allow the packaging to be inserted into the reproducing device and removed from it, mounted in the reproducing device Means for protruding into the package as it arrives in a fully inserted position in the display device, the manner of puncturing the means for protruding comprising a first state and a second state, the means for protruding when arranged in the first state the arrival of the package in the full allow inserted position, while they prevent removal of the plate from the playback device during the retraction of the package from the fully inserted position after the arrival of the filled package when arranged in the second state, the Pl atte is retained in the playback device upon completion of the retraction of the packaging, as well as means, which is responsive to the arrival of the packaging in the fully inserted position in the playback device, for changing the state of the means for protruding between the first state and the second state, characterized by a toothed wheel (178, 312) which is rotatably mounted in the playback device (136, 23Ο), an operating lever (17 * S 3Ο8) which is mounted in the playback device (136, 230) for movement of a first Positioned in a second position in response to the arrival of the package (50, 260) in the fully inserted position - 23 -80982 ^ / 0763 -yS- in the playback device (136, 230), means (180, 342) which is connected to the operating lever (174-, 308) and is responsive to the movement of the operating lever (174-, 308) into the second position for inducing an advancement the toothed R _a ds (178, 312), means (186, 328) which is disposed in the reproducing apparatus (136, 230) for urging said actuating lever (174-, 308) to a return to the first position, means (188, 334), which is arranged in the playback device (136, 230) for preventing a reversal of the movement of the toothed wheel (178, 312) during the movement of the operating lever (174-, 308) into the first position, as well as a Means (182, 320), responsive to the advancement of the toothed wheel (178, 312), for causing the means (166, 168; 300, 302) to change between the first state and the second state. 2. Apparatus according to claim 1, with a plate rotatably mounted in the housing for supporting a plate during the playback, a platform which is mounted in the housing for movement between a raised Position and a depressed position, the means for protruding in the second position causing that the disc is retained in the playback device and upon completion of the retraction of the package rests on the platform and means for causing the platform to move from the raised position to the depressed position for effecting transfer of the retained panel from the platform on the turntable, characterized in that the toothed wheel (178, 312) is rotatable on the platform (154-, 272) is attached, the operating lever (174-, 308) is attached to the platform (154-, 272) for a movement of the - 24- - 80982 ^ / 0763 -ai- most position in the second position depending on the arrival of the package (50, 260) in the fully inserted Position in the playback device (136, 230), wherein the means (186, 320) for forcing the operating lever (174, 308) to return to the first position the platform (154, 272) is attached and the device (188, 334) to prevent the movement of the toothed wheel (178, 512) during the movement of the operating lever (174, 3O8) in the first position on the platform (154, 272) is attached. Apparatus according to claim 2, wherein the protective packaging comprises a casing and a disc holder removably arranged therein includes means for guiding the insertion and removal of the package aligned with the insertion slot are, the platform is arranged under the guide devices for movement between a raised Position and a depressed position, the means for protruding means for engagement with the plate holder during the arrival of the package in the fully inserted position in the playback device, the functioning of these engagement devices comprises a first state and a second state, the engagement means when disposed in the first State allow the arrival of the package in the fully inserted position, while when placed in the second State of removal of the disc holder from the playback device while the casing is being withdrawn from the fully inserted position, with retraction of the cover subsequent upon arrival of the filled package in the fully inserted position in a retention of the enclosed panel in the Playback device results, and wherein the disc holder is formed such that the retained disc on the platform in the raised position - 25 -8098 275/0763 rest on completion of the retraction of the casing can, characterized in that the means (182, 320) responsive to each advancement of the toothed wheel (178 »312) responds, changing the engagement devices (166, 168; 300, 302) between the first state and brings about the second state. Device according to one of Claims 1 to 3 »characterized in that that the means for protruding have at least one pawl (166, 168; 3OO, 302) and the means for causing the state of the means (166, 168; 3OO, 302) to change, comprise: a cam arrangement (182, 320) which is connected to the toothed wheel (178, 312) for common rotation therewith as well Devices (184, 336, 338) for tensioning the pawl (I66, 168; 300, 302) into engagement with the cam assembly (182, 32O), wherein the cam arrangement (182, 320) is formed in this way is that each advancement of the toothed wheel (178, 312) causes the pawl (I66, 168; 3OO, 302) between the first state and the second state alternates. £ 80982/0763