JP4134919B2 - Disc recording and / or playback device - Google Patents

Description

  The present invention relates to a so-called slot-in type disk recording and / or reproducing apparatus.

  Disc recording and / or reproducing devices are known as a tray type that loads a disc on a tray and loads the disc, and a slot-in type that inserts the disc directly into the housing from the disc entrance. .

  The tray type disk recording and / or reproducing apparatus has a drawback in that it takes a long time to record and / or reproduce in order to load the disk after the tray is pulled out.

  On the other hand, the slot-in type disk recording and / or reproducing apparatus inserts the disk directly into the housing from the disk inlet / outlet, so loading is completed in a shorter time than the tray type disk recording and / or reproducing apparatus. Although there is an advantage that recording and / or reproduction can be performed, there is a disadvantage that the disk is easily dropped from the disk entrance of the housing when ejecting the disk.

Therefore, a disc recording and / or reproducing device has been developed that can hold the ejected disc so as not to drop out of the disc entrance. (For example, see Patent Document 1)
The disk recording and / or reproducing apparatus includes a housing provided with a disk inlet / outlet for inserting / removing a disk, a disk transport mechanism for inserting / removing a disk into / from the housing, and a disk ejected by the disk transport mechanism. And a disk drop prevention mechanism that holds the disk so that it does not fall off.

  As shown in FIG. 52, the disk drop prevention mechanism 301 includes a gate sheet 306 provided with a cut 305 through which the disk 304 passes and closes the disk inlet / outlet 303 of the housing 302, and the gate sheet 306 on the disk inlet / outlet 303 side. And a gate sheet support frame 307 that is supported in a state of facing toward. The gate sheet support frame 307 includes a mask opening 308, and the cut 305 is positioned at the center of the mask opening 308.

  The gate sheet 306 is provided with a plurality of slits 309 above and below the cut line 305 in parallel with the cut line 305. These slits 309 are formed at positions farther from the cut 305 than the peripheral edge 308 a of the mask opening 308.

When the disk 304 is inserted, as shown in FIG. 53, the upper and lower gate sheets 306 are bent toward the inside of the housing 302 by being pushed by the disk 304 and using the cut line 305 as a boundary. Further, when the disc 304 is ejected, as shown in FIG. 54, the upper and lower gate sheets 306 are bent so as to enter the inside of the peripheral edge 308a of the mask opening 308 with the cut 305 as a boundary, and the disc is held. It is designed to generate power.
JP 2002-334499 A

The conventional disk recording and / or reproducing apparatus has the following problems.
(1) It is difficult to smoothly reverse the upper and lower gate sheets 306 when reinserting the disc shown in FIG. Further, when the upper and lower gate sheets 306 are reversed, a so-called reversal shock is generated.
(2) Until the upper and lower gate sheets 306 are inverted, the loading load at the time of re-inserting the disk increases.
(3) As shown in FIG. 55, a disk feed roller 313 is attached to the other end side (free end side) of a pair of rotating arms 311 and 312 whose one end side is pivotally supported by a shaft 310, and the pair of rotating arms When the rotating force is applied to the rotating arms 311 and 312 in the direction in which the distance between the disk feed rollers 313 and 313 is reduced by the spring 314 and the disk 304 is inserted, the pair of rotating arms 311 and 312 is moved to the spring of the spring 314. The disk 304 is engaged so that the peripheral surface of the disk 304 bites against the peripheral surface of the disk feed rollers 313 and 313 so as to push out against the force, and the disk 304 is rotated by rotating the disk feed rollers 313 and 313. In the disk recording and / or reproducing apparatus in which loading is performed, the disk feeding roller 313 is used during unloading. When the engagement of 313 and the disk 304 is released, the disk 304 is pushed out vigorously by the spring force of the spring 314 acting on the pair of rotating arms 311, 312. It was difficult to reliably prevent the dropout. In particular, when the spring force of the spring 314 is increased in order to improve the biting of the disk feed rollers 313 and 313 to the disk 304 when the disk is inserted, this tendency becomes remarkable.
(4) When the disc recording and / or reproducing apparatus is used vertically (specification), the disc 304 is easily dropped from the disc entrance.

  It is an object of the present invention to prevent the gate sheet from causing a reverse shock or the like even when reinserted in the middle of ejecting a disc, and more reliably prevent the disc from dropping from the disc entrance when the disc is ejected. It is to provide a disk recording and / or reproducing apparatus.

The present invention provides a housing provided with a disk inlet / outlet for inserting / removing a disk, a disk transport mechanism for inserting / removing a disk into / from the housing, and a disk ejected by the disk transport mechanism so as not to drop out of the disk inlet / outlet. A disk drop prevention mechanism that supports the gate sheet with a notch that closes the disk entrance and has a cut through which the disk passes, and that the gate sheet faces the disk entrance side. A gate seat support frame ,
The gate sheet is divided into first and second sheet portions at the cut,
Said seat support frame, wherein the first frame portion for supporting the first seat, the second frame portion for supporting the second sheet portion, is divided into Lud disc recording and / or reproducing in the device,
The first frame portion can be rotated in the disc insertion direction from a position closing the disc entrance and from the position closing the disc entrance, and cannot be rotated in the disc ejection direction from the position closing the disc entrance. The second frame portion was attached to the housing so as not to rotate.

The invention of claim 2 is the disc recording and / or reproducing apparatus of claim 1,
An elastic member is provided for forcibly returning the frame portion rotated in the disc insertion direction when the disc is inserted to a position where the disc entrance is closed after the disc is inserted.

The invention of claim 3 is the disk recording and / or reproducing apparatus of claim 1,
The disc ejection speed was reduced immediately before the disc ejection operation by the disc transport mechanism was completed.

A fourth aspect of the present invention is the disc recording and / or reproducing apparatus according to the first aspect,
The disk drop prevention mechanism is provided with a disk attitude control member for controlling a downward biasing attitude of the disk due to gravity when the disk recording / reproducing apparatus is used in a vertical position with the disk inlet / outlet oriented in the vertical direction.

In the disc recording and / or reproducing apparatus of the present invention , when the disc is inserted, when the leading end of the disc hits a sheet portion (gate sheet) at a position blocking the disc entrance, the one frame portion is The disc is passed through by rotating in a so-called escape direction from a position blocking the disc entrance. Further, when the disc is ejected, if the leading end of the disc hits the sheet portion at a position blocking the disc entrance, the one frame portion is not rotatable in the disc ejection direction. The escape rotation cannot be performed, and the sheet portion is bent and pressed against the surface of the disk to hold the disk. In particular, when the disc is inserted, when the front end of the disc hits the sheet portion at a position blocking the disc entrance, the first frame portion rotates in the escape direction from the position closing the disc entrance. And let the disc pass. On the other hand, since the second frame portion is fixed, it does not rotate, and the seat portion attached to the second frame portion bends and presses against one surface of the disk. Further, when the disc is ejected, if the leading end of the disc hits the sheet portion at a position blocking the disc entrance, the one frame portion is not rotatable in the disc ejection direction. The escape rotation cannot be performed, and the seat portion bends and is crimped to one main surface of the disk, and the second frame portion is also fixed and thus does not rotate, and the seat portion attached thereto is flexed. Then press the other surface of the disk and hold the disk.

The disc recording and / or reproducing apparatus according to claim 2 is provided with an elastic member for forcibly returning the frame portion rotated in the disc insertion direction when the disc is inserted into a position where the disc entrance is closed after the disc is inserted. Even in the case where a frame portion located under the disk entrance / exit where it is difficult to automatically return the part to the position where the disc entrance / exit automatically closes due to its own weight (gravity), and a disc recording and / or reproducing apparatus are placed vertically, The frame portion located on the left and right sides of the disk entrance / exit can be forcibly returned to the position closing the disk entrance / exit.

The disc recording and / or reproducing apparatus according to claim 3 reduces the disc ejection speed immediately before the disc ejecting operation by the disc transport mechanism is completed, so that the disc output due to inertia is suppressed at the end of the disc ejecting operation. The effect of the drop-off prevention mechanism is further ensured to prevent the disc from being thrown out from the disc entrance.

5. The disk recording and / or reproducing apparatus according to claim 4 , wherein the disk recording and / or reproducing apparatus in which the disk inlet / outlet is directed in the vertical direction by a disk attitude control member arranged outside the disk drop prevention mechanism is used vertically. In this case, the downward biasing posture of the disc due to gravity is corrected and controlled to prevent the disc from rolling off from the disc entrance caused by the bias of the grip force due to the non-uniform manner of touching the gate sheet. In addition, the selection of the gate sheet material, which has been considered difficult in the past, and the determination of the shape and mounting position can be easily and appropriately performed by using the above-mentioned disk attitude control member, and stable disk holding performance can be achieved. It became possible to get. Further, even if the deformation or mounting accuracy of the front panel of the set is somewhat rough, the above-described disk attitude control member compensates for these deformations and mounting errors, so that the design becomes easy.

  Next, the best mode of the present invention is described as follows: (1) schematic configuration of the entire disc recording and / or reproducing apparatus, (2) configuration of a housing, a mechanical chassis, a disc chucking mechanism, and (3) a mechanical chassis locking mechanism, (4) Disc drop prevention mechanism, (5) Disc insertion guide mechanism configuration, (6) Switch mechanism configuration, (7) Disc centering member configuration, (8) Disc transport mechanism configuration, (9) Gear switching mechanism (10) Configuration of mechanical chassis lifting mechanism, (11) Configuration of transport roller contact / separation mechanism, (12) Configuration of disc overlap insertion prevention mechanism, (13) Operation will be described in this order.

(1) Schematic Configuration of Entire Disc Recording and / or Reproducing Device The disc recording and / or reproducing device 1 includes a disc entrance provided in the housing 2 via a disc drop prevention mechanism 201 as shown in FIGS. When a disc is inserted from 3, the disc is guided and inserted into the housing 2 by a disc insertion guide mechanism 31 (see FIGS. 15 and 16) disposed inside the disc inlet / outlet 3.

  When the disk is inserted to a predetermined position, the switch 92 (see FIGS. 18 to 20) switches on the motor 92 of the disk transport mechanism 91 (see FIGS. 27 and 28). It is conveyed almost directly above the disk table 12 and positioned by a disk centering member 81 (see FIGS. 21 and 22).

  After the disk is positioned substantially directly above the disk table 12, the gear switching mechanism 131 (see FIGS. 29 to 33) is operated, and the mechanical chassis elevating mechanism 151 (see FIGS. 34 and 35) is operated by the motor 92 of the disk transport mechanism 91. ), The disk table 12 mounted on the mechanical chassis 11 is moved to the disk side, and the disk is chucked on the disk table 12. After chucking the disk on the disk table 12, the transport rollers 32 and 33 are separated from the disk by the transport roller contact / separation mechanism 161 (see FIGS. 30 to 33 and 36), and the disk is restrained by the transport rollers 32 and 33. The disk is opened to make the disk free of rotation, and the disk entrance / exit 3 is blocked by the disk duplication / insertion prevention mechanism 171 (see FIGS. 41 and 42) to make it impossible to insert another disk. Then, recording and / or reproduction is performed.

  When the eject button is pressed after the recording and / or reproduction is finished, the motor 92 reverses, the disc entrance / exit 3 is blocked by the disc duplication / insertion prevention mechanism 171 and the disc is ejected from the disc entrance 3 and the disc is dropped. The mechanical chassis 11 is locked by a mechanical chassis locking mechanism 191 (see FIGS. 47 and 48) while being held by the prevention mechanism 201 so as not to drop out of the disk entrance 3.

(2) Configuration of Case, Mechanical Chassis, and Disk Chucking Mechanism As shown in FIGS. 1 to 3, the case 2 includes a base plate 4 and a top panel 5. A disk doorway 3 is provided between the front panel 5 and the surface panel 5. The disk entrance / exit 3 is formed in a size that allows insertion of both an 8 cm disk 6 and a 12 cm disk 7. A mechanical chassis 11 is attached to the base plate 4.

  As shown in FIGS. 4 and 5, the mechanical chassis 11 is equipped with a disk table (turn table) 12, an optical pickup 13, and the like. The mechanical chassis 11 is rotatably attached to the base plate 4 by a shaft 14, and the disk table 12 is moved up and down between a disk chucking release position (see FIG. 4) and a disk chucking position (see FIG. 5). It is supposed to let you.

  When the mechanical chassis 11 moves to the disc chucking release position, it is fixed (locked) to the base plate 4 side by a mechanical chassis locking mechanism 191 (see FIGS. 47 and 48) described below. .

  As shown in FIGS. 4 and 5, the top panel 5 is provided with a disk chucking mechanism 21. The disk chucking mechanism 21 includes a chucking member 22 and a chucking member support arm 23 that supports the chucking member 22.

  As shown in FIGS. 6 and 7 in an enlarged manner, the chucking member 22 is formed in a substantially disc shape by a synthetic resin in which a magnetic metal plate such as iron is inserted. The chucking member support arm 23 has a bifurcated plate support portion 24 and supports the chucking member 22 by inserting the rate support portion 24 into a recess 25 provided on the outer peripheral surface of the chucking member 22. It is supposed to be. The chucking member support arm 23 is attached to the top panel 5 by a shaft 26 so as to be able to turn up and down. The chucking member support arm 23 is given a clockwise turning force about the shaft 26 by pushing down the one end portion 23a side by the arm operation member 27, and the chucking member support arm 23 is attached to the top panel 5. It is raised up at a predetermined inclination angle. (See FIG. 6).

  When the pushing down of the one end portion 23a side of the chucking member support arm 23 by the arm operation member 27 is released, the chucking member support arm 23 is rotated counterclockwise by the spring force of the torsion coil spring 28, and the chucking member support arm 23 is stopped. Move to the king position. (See FIG. 7).

(3) Configuration of Mechanical Chassis Lock Mechanism As shown in FIG. 47, the mechanical chassis lock mechanism 191 swings the mechanical chassis 11 toward the base plate 4 side of the housing 2 when the mechanical chassis 11 is in the disc chucking release position. A lock portion 192 for releasing chucking that is impossiblely locked is provided.

  The lock portion 192 at the time of releasing the chucking includes first and second locked portions 193 and 194 provided at a substantially central portion and one side portion of the free end side of the mechanical chassis 11 and the first portion at the time of releasing the chucking. , First and second lock portions 195 and 196 engaged with the second locked portions 193 and 194, respectively.

  The first and second lock portions 195 and 196 are provided on a slide member 182 of a disc overlap insertion prevention mechanism 171 which will be described in detail later. One end portions of the first and second lock portions 195 and 196 are inclined surfaces 197. When the slide member 181 moves to the disk chucking release position, the first and second lock portions 195 and 196 are moved to the disc chucking release position by the inclined surfaces 197. The mechanical chassis 11 is locked at the disc chucking release position by engaging the second locked portions 193 and 194 so as to be pushed down. 47 shows a state in which the mechanical chassis 11 is viewed from the lower surface side, so that the first and second locked portions 193 and 194 are pushed up by the first and second lock portions 195 and 196. In reality, the first and second locked portions 193 and 194 are pushed down by the first and second lock portions 195 and 196 as shown in FIG.

  When the slide member 181 moves from the disc chucking release position to the disc chucking position, as shown in FIG. 48, the first and second lock portions 195 and 196 and the first and second locked portions 193 are obtained. , 194 is released. When the slide member 181 comes to the disk chucking position, the chucking lock portion 199 including the third lock portion 198 provided on the slide member 181 and the first locked portion 193 is used. Specifically, the mechanical lock 11 is locked at the disk chucking position by engaging the third lock portion 197 so as to push up the first locked portion 193. FIG. 48 shows a state in which the mechanical chassis 11 is viewed from the lower surface side, so that it appears that the first locked portion 193 is pushed down by the third lock portion 198. As shown, the first locked portion 193 is pushed up by the third lock portion 198.

(4) Disc drop prevention mechanism The disc drop prevention mechanism is for holding the disc ejected by the disc transport mechanism so as not to fall out of the disc entrance.

  As shown in FIG. 8, the disk drop prevention mechanism 201 includes a gate sheet 203 having a cut 202 through which the disk passes and closes the disk inlet / outlet 3, and the gate sheet 203 facing the disk inlet / outlet 3 side. In the case where the gate sheet support frame 204 and the disc recording and / or reproducing apparatus are used in a vertical position, the posture of the disc is controlled so that the disc does not easily roll off from the disc entrance 3. And a disk attitude control member 205 for performing the operation.

  The gate sheet 203 is divided into first and second sheet portions 211 and 212 at the cut 202. The seat support frame 204 is divided into a first frame portion 221 that supports the first seat portion 211 and a second frame portion 222 that supports the second seat portion 212. .

  The first and second sheet portions 211 and 212 are arranged so that the first and second frame portions 221 and 221 cover the cutout window portions 221a and 222a provided in the first and second frame portions 221 and 222, respectively. 222 is attached to one end of the first and second sheet portions 211 and 212 to form the cut 202.

  In the first and second sheet portions 211 and 212, a plurality of slits (cuts) 213... 213 are formed at positions facing each other with the cut 202 as a boundary. These slits 213... 213 suppress the occurrence of twisting and the like in the first and second sheet portions 211 and 212 and generate an optimum disc holding force in the first and second sheet portions 211 and 212. The slits 213... 213 are formed at a short pitch at the center of the cut 202 and at a rough pitch at both sides. The outermost slit 213 is located outside the 12 cm disk 7 to prevent the first and second sheet portions 211 and 212 from twisting when passing through the disk and to hold the disk surface evenly from the vertical direction. It is supposed to be.

  The gate sheet 203, that is, the first and second sheet portions 211 and 212, is a fabric such as a non-woven fabric excellent in flexibility (for example, trade name “Ramose” manufactured by Asahi Kasei Co., Ltd.), It is made of a sheet material such as rubber or a film material, and is attached to the first and second frame portions 221 and 222.

  As shown in FIGS. 9 and 10, the first frame portion 221 is formed in a long and narrow rectangular shape by plastic such as polyester, and a notch window portion 221a wider than the 12 cm disk 7 is formed on the lower end side. Is provided. A frame portion 221b for positioning the first sheet portion 211 is provided on the front surface of the first frame portion 221, and an upper portion of the notch window portion 221a on the front surface of the frame portion 221b is provided. A plurality of boss-like protrusions 221c are provided. In addition, a pair of shaft portions 221d are provided on both side portions in the length direction of the first frame portion 221 so as to be attached to the second seat portion 212 so as to be able to turn (escape).

  In the first frame portion 221, the first sheet portion 211 is overlapped on the front surface using the frame portion 221b, and the plurality of boss-like protrusions 221c are passed through the protrusion insertion holes 221e. After the positioning of the sheet portion 211, the surface of the first sheet portion 211 is pressed by the sheet pressing plate 221f to attach the first sheet portion 211.

  The sheet pressing plate 221f is formed of plastic, a metal plate, or the like, and includes a protrusion insertion hole 221g at a position corresponding to the plurality of boss-shaped protrusions 221c. Then, by inserting the boss-like projections 221c into the projection insertion holes 221g, and melting and expanding the diameter by heating the tips of the boss-like projections 221c, the sheet pressing plate 221f The sheet 211 is attached to the first sheet 211 while pressing the surface of the sheet 211.

  The lower end portion of the sheet pressing plate 221f is a gently inverted V-shaped cutout portion 221h so as to block a part of the cutout window portion 221a, and the cutout portion 221h extends to the first sheet portion 211. Some are facing.

  As shown in FIG. 11, the second frame portion 222 is formed in a long and narrow rectangular shape by plastic such as polyester like the first frame portion 221, and the lower end portion is wider than the 12 cm disc 7. A wide groove 222a is provided. In addition, a frame portion 222b for positioning the second sheet portion 212 is provided on the front surface of the second frame portion 222, and a plurality of grooves 222a are formed on the front surface of the frame portion 222b. A boss-like protrusion 222c is provided. Further, a pair of arms 222d for rotatably mounting the first frame portion 221 is provided on both side portions of the second frame portion 222 in the length direction, and tips of the pair of arms 222d are provided. Is provided with a pair of bearing portions 222e.

  The second frame portion 222 has the second sheet portion 212 overlaid on the front surface using the frame portion 222b, and the plurality of boss-shaped protrusions 222c penetrate the protrusion insertion holes 222f to form the second frame portion 222b. After positioning the sheet portion 212, the second sheet portion 212 is attached by pressing the surface of the second sheet portion 212 with the sheet pressing plate 222g.

  The sheet pressing plate 222g is formed of plastic, a metal plate, or the like, and includes a protrusion insertion hole 222h at a position corresponding to the plurality of boss-shaped protrusions 222c. Then, by inserting the boss-like protrusions 222c into the protrusion insertion holes 222h and melting and expanding the diameter by heating the tips of the boss-like protrusions 222c, the sheet pressing plate 222g The sheet 212 is attached to the second frame portion 222 while pressing the surface thereof.

  The upper end portion of the sheet pressing plate 222g is a gentle V-shaped notch portion 222i so as to block a part of the groove 222a, and a part of the second sheet portion 212 extends from the notch portion 222i. I'm here.

  The first frame portion 221 is rotatably attached to the second frame portion 222 by inserting the pair of shaft portions 221d into a pair of bearing portions 222e provided on the second frame portion 222. ing. The first frame portion 221 is provided with rotational force by a torsion coil spring 222k as an elastic member attached to a spring attachment portion 222j provided on the arm portion 222d of the second frame portion 222, as shown in FIG. In addition, the second frame portion 222 is overlapped in a straight line perpendicularly to the second frame portion 222, so-called closed state. In this state, the thickness width of the central portion (by the notch portion 221h of the sheet pressing plate 221f attached to the first frame portion 221 and the notch portion 222i of the sheet pressing plate 222g attached to the second frame portion 222 ( A disc insertion slot 223 (see FIG. 8) is formed which has the widest (longitudinal width) and gradually decreases in thickness as it goes to both ends. The length width (horizontal width) of the disc insertion slot 223 is formed around 13 cm which is about 1 cm longer than the diameter of the 12 cm disc 7. The cut end 202 is formed by abutting the end portions of the first sheet portion 211 and the second sheet portion 212 at the center of the disc insertion opening 223 in the thickness width direction. The second frame portion 222 to which the first frame portion 221 is attached is attached to the housing 2 by an attachment portion 224.

  A disk attitude control member 205 is attached to the outside of the first and second frame portions 221 and 222. The disc attitude control member 205 is used to more reliably prevent the disc from rolling down during ejection even when the disc recording and / or reproducing apparatus is used in a vertical state. When the disc recording and / or playback device is used in the vertical position, the center of the disc falls below the track line of the disc center of the disc loading / ejecting operation of the disc recording and / or playback device due to the gravity of the disc. End up. When the disc is lowered, the disc is held at a position that is biased downward from the central portion in the length direction of the first and second sheet portions 211 and 212 with which the end portions are abutted. As described above, the disc insertion slot 223 is constituted by the notch portion 221h of the sheet pressing plate 221f attached to the first frame portion 221 and the notch portion 222i of the sheet pressing plate 222g attached to the second frame portion 222. Since the thickness width of the first and second sheet portions 211 and 212 is widest at the center portion and gradually decreases toward both ends, the lower end side becomes stronger and the upper end side becomes weaker.

  Therefore, when the disc is ejected in a state of being biased downward, the disc rotates from the upper end side having a weak holding force with the lower end side having a strong holding force as a fulcrum, and the disc is rotated in the first and second directions. There was a risk of rolling off between the sheet portions 211 and 212, that is, from the cut end 202.

  The disc attitude control member 205 suppresses the downward bias of the disc when the disc recording and / or reproducing apparatus is used in a vertical state.

  The disk attitude control member 205 takes into consideration the minimum width that the 12 cm disk 7 can pass through (maximum standard diameter of the disk 120.3 mm + α (size deviation determined by parts and mounting tolerances). 2/0 mm)) is provided.

  The disk attitude control member 205 is constituted by a notch portion 221h of a sheet pressing plate 221f attached to the first frame portion 221 and a notch portion 222i of a sheet pressing plate 222g attached to the second frame portion 222. It is attached to the second frame portion 222 in a state where it is aligned with the central portion of the disk insertion slot 223 in the length direction.

  The disk attitude control member 205 is provided with a positioning hole 226 and a screw hole 227. On the other hand, the second frame portion 222 is provided with a positioning boss 228 and a screw hole 229. The disk attitude control member 205 is attached to the second frame portion 222 with screws 230 in a state where the positioning boss 228 is inserted into the positioning hole 226 and positioned.

  The disk drop prevention mechanism 201 of the embodiment is configured as described above. As shown in FIGS. 12 and 13, when the disk is inserted, the tips of the disks 6 and 7 are the first and second sheet portions. When hitting 211, 212, the first frame portion 221 rotates in a so-called escape direction from a position blocking the disk entrance and passes the disks 6, 7. On the other hand, since the second frame portion 222 is fixed, it does not rotate, and the second sheet portion 212 attached to the second frame portion 222 bends and presses against one main surface of the disks 6 and 7. Further, when the disc is ejected, as shown in FIG. 14, when the leading ends of the discs 6 and 7 are pushed against the first and second sheet portions 211 and 212 at positions where they block the disc entrance, the first and second sheets are pushed. Since the frame portion 221 is not rotatable in the disc ejection direction, the escape portion cannot be rotated, and the first sheet portion 211 is bent and pressed against one main surface of the discs 6 and 7. Since the second frame portion 222 is also fixed, it does not rotate, and the second sheet portion 212 attached to the second frame portion 222 bends and presses against the other main surface of the disks 6, 7, so that the disk 6, Hold 7 so that it does not roll off.

  Further, even when the disc recording and / or reproducing apparatus is used in a vertically placed state, the disc posture control member 205 corrects the deviation of the discs 6 and 7 due to gravity, particularly the downward deviation of the 12 cm disc 7. Thus, the disk can be prevented from rolling down.

  In the disk recording and / or reproducing apparatus of the embodiment, the elastic member 222k for forcibly returning the frame portion rotated in the disk insertion direction when the disk is inserted to the position where the disk inlet / outlet is closed after the disk is inserted is provided. The first frame 221 is also used in a vertical recording (specification) disk recording and / or reproducing apparatus in which it is difficult to automatically return the first frame portion 221 to a position where the disk entrance / exit is automatically closed by its own weight (gravity). The portion 221 can be forcibly returned to the position where the disk doorway is closed.

  In the above embodiment, the first frame portion 221 is configured to rotate. However, the second frame portion 222 may be configured to rotate, or the first and second frame portions 221 and 222 may be configured to rotate. You may make it the structure rotated. Further, in the embodiment, the frame portion is rotated to escape, but the escape movement may be other than rotation.

(5) Configuration of Disc Insertion Guide Mechanism The disc insertion guide mechanism is for inserting a disc into the housing from the disc entrance with the center of the disc aligned with the center of the disc entrance.

  As shown in FIG. 15, the disc insertion guide mechanism 31 includes a pair of transport rollers (hereinafter referred to as first and second rollers) 32 and 33 and a pair of first and second rollers 32 and 33 attached thereto. Rotating arms (hereinafter referred to as first and second arms) 34 and 35, and torsion coil springs (hereinafter referred to as first and second springs) for applying rotational force to the first and second arms. 36, 37, and a synchronous drive gear group 38 that moves the first and second arms 34, 35 in a direction that approaches and separates from each other.

  The first arm 34 is formed in a substantially fan shape, and a main portion of the fan is pivotally attached to one end portion of the top panel 5 on the disk doorway 3 side by a first shaft 41. In addition, an arcuate gear 42 is provided on the free end side with the first shaft 41 as the center.

  The first arm 34 is applied with a counterclockwise turning force by the first spring 36 and is stopped at a position approaching the disk doorway 3. In this state, the first roller 32 attached to the first arm 34 is located at a predetermined distance L1 from the center position CL of the disk entrance 3.

  Similarly to the first arm 34, the second arm 35 is also formed in a substantially fan shape, and the main part of the fan is connected to the other end portion of the top panel 5 on the disk entrance / exit side by the second shaft 43. While being rotatably attached, an arcuate gear 44 is provided on the free end side with the second shaft 43 as the center.

  The second arm 35 is given a clockwise turning force by the second spring 37 and stops at a position close to the disk doorway 3. In this state, the second roller 33 attached to the second arm 35 is located at a predetermined distance L2 from the center position CL of the disk doorway 3, and the first roller 32 and the second roller 33 are located. The interval L1 + L2 is 8 cm or less.

  Further, as shown in FIG. 16, in the state where the first arm 34 is most rotated clockwise and the second arm 35 is most rotated counterclockwise, the first roller 32 and the second roller 33 are arranged. The distance L3 exceeds 12 cm, and the first roller 32 and the second roller 33 are not in contact with the 12 cm disk 7.

  The synchronous drive gear group 38 includes a first gear 51 that meshes with the fan-shaped gear 42 of the first arm 34, a second gear 52 that meshes with the fan-shaped gear 44 of the second arm 35, and these The third to sixth gears 53 to 56 are interposed between the first and second gears 51 and 52.

  When one of the first and second arms 34 and 35 is rotated, the other arm is also rotated in synchronization with the first and second arms 34 and 35. , They are moved in a direction to approach and separate from each other.

  As shown in FIG. 17, the first and second rollers 32 and 33 have peripheral surfaces formed substantially in a cross section, and the peripheral portions of the disks 6 and 7 inserted from the disk inlet / outlet 3. The upper and lower edge portions 8 are sandwiched.

(6) Configuration of Switch Mechanism The switch mechanism controls the motor of the disk transport mechanism when the disk is inserted from the disk entrance to a predetermined position.

  As shown in FIGS. 18 to 20, the switch mechanism 61 is a switch operation for sequentially pressing the first, second, and third switches 62a, 62b, and 62c and the first and second switches 62a and 62b. A lever 64, a rotating cam 65 for operating the switch operating lever 64, an interlocking gear group 66 for rotating the rotating cam 65 in conjunction with the rotation of the second arm 35 of the disk insertion guide mechanism 31, And a rotary cam operation body 164 of the transport roller contact / separation mechanism 161, which will be described in detail after the third switch operation portion 63 for pressing the third switch 62c is provided.

  The interlocking gear group 66 includes an arcuate gear 67 provided on the rotary cam 65, a seventh gear 68 that meshes with the arcuate gear 67, and an eighth gear 69 that meshes with the seventh gear 68. And. The eighth gear 69 meshes with the second gear 52 of the disc insertion guide mechanism 31.

  The rotating cam 65 has a bearing tube portion 70, and a cam mounting shaft (not shown) provided on the top panel 5 is inserted into the bearing tube portion 70 to center the cam mounting shaft. The top panel 5 is rotatably attached.

  The arc-shaped gear 69 is formed in an arc shape with the bearing tube portion 70 as the center. The rotating cam 65 is linked to the first arm 34 via an interlocking gear group 66 composed of an arcuate gear 67 and seventh and eighth gears 68 and 69 and the gear group 38 for synchronous driving. And turn.

  The rotating cam 65 includes first to third cam surfaces 71 to 73 on the substantially opposite side of the fan-shaped gear 69 with the bearing cylinder portion 70 interposed therebetween.

  One end of the switch operating lever 64 is attached to the base plate side so as to be rotatable by a shaft 64a. The switch operating lever 64 is provided with a circular contact portion 64b in contact with the first to third cam surfaces 71 to 73 of the rotary cam 65 at the center, and both sides of the switch operation lever 64 so as to sandwich the contact portion 64b. A first switch operation unit 64c that presses the first switch 62a and a first switch operation unit 64d that presses the second switch 62b are provided in the unit.

  As shown in FIG. 18, before the disc is inserted into the disc entrance / exit 3, the contact portion 64b of the switch operating lever 64 contacts the first cam surface 71, and the first switch 62a and the second switch 62 The switch 62b is kept OFF.

  As shown in FIG. 19, when a disk is inserted from the disk entrance 3 and the first and second arms 34 and 35 are opened by a predetermined distance or more by the disk, the switch is placed on the second cam surface 72. The contact portion 64b of the operation lever 64 comes into contact, the first switch operation portion 64c turns on the first switch 62a, and the second switch operation portion 64d keeps the second switch 62b in the OFF state. .

  As shown in FIG. 20, when the first and second arms 34 and 35 are further opened by a predetermined distance or more, specifically, when a 12 cm disc is inserted, the switch operation is performed on the third cam surface 73. The contact part 64b of the lever 64 comes into contact, the first switch operation part 64c turns on the first switch 62a, and the second switch operation part 64d turns on the second switch 62b.

  Also, as shown in FIG. 36, a rotary cam operating body 164 of a transport roller contact / separation mechanism 161, which will be described later, is slid to separate the first arm 34 and the second arm 35 from the circumferential surface of the disk. When the rotation is free, the third switch 62c is turned on by the third switch operation unit 63 provided in the rotary cam operation body 164.

  Next, the control of the motor 92 of the disk transport mechanism 91 using the switch mechanism 61 will be described.

  37 is a timing chart showing the operation of the switch mechanism 61 and a combination of signals. FIG. 38 is an enlarged view of the main part (circular portion) of FIG. 37. FIG. 39 is a control block diagram of the motor. It is a table | surface figure which shows the relationship between the height (H, L) of each signal, and an output (State).

  The first, second, and third switches 62a, 62b, and 62c are in the OFF state in the eject end state before the disc is inserted.

  The first switch 62a is turned on when the disk is inserted to a predetermined position. Further, the first switch 62a is turned off at the time of EJECT END (disc ejection end).

  The second switch 62b is turned on in the middle of DRAW (disc insertion) (when an 8 cm disc is inserted, it is not turned on but when a 12 cm disc is inserted). Further, the second switch 62b is turned off before EJECT END.

  The third switch 62c is turned on at the time of CHUCK END when the disk is free of rotation by separating the conveying roller from the disk after the completion of the disk chucking. The third switch 62c is turned off after the disk chucking is released. Note that CTL represents an ON / OFF control signal for the motor 92, REV and FWD represent the rotation direction and brake control signal of the motor 92, and MotorVoltage represents the voltage of the motor 92.

  When the FWD signal is H (High) and the REV signal is L (Low), the disk is RAW. When the FWD signal is L and the REV signal is H, the disk is ejected. When the FWD signal is L and the REV signal is L, Brake is applied. When the FWD signal is L and the REV signal is L, the Free state is entered.

  The Free state is a range of 33% duty from when the second switch 62b is turned off to when the first switch 62a is turned off. In this range, as shown in FIGS. 37 and 38, the REV signal alternately transmits L and H at 8 msec and 4 msec, and intermittently turns the motor 92 on and off. Therefore, the motor 92 reduces the disk transport speed by the motor 92 while maintaining the rotational drive voltage, thereby preventing the disk from popping out of the disk insertion slot.

(7) Configuration of the disc centering member The disc centering member is for positioning the center of the disc inserted from the disc entrance on the disc table, and inserts discs with different diameters, for example, 8 cm discs. In this case, even when a 12 cm disc is inserted, the center of these discs can be positioned almost directly above the disc table. The pressing operation can be performed.

  As shown in FIGS. 21 and 22, the disk centering member 81 has a disk contact portion 82 on one end side, and an operation portion 83 that presses a rack 134 of a gear switching mechanism 131 described later on the other end side. The disc contact portion 82 and the operation portion 83 are pivotally supported by a shaft 84 so as to be rotatable. Then, when the disc transported by the disc transport mechanism 91 described below abuts on the disc abutting portion 82 and the disc abutting portion 82 is pressed, the disc rotates about the shaft 84 and moves to the center of the disc. When the portion comes almost directly above the disc table 12, the stop is stopped by a stopper 85 provided on the rotary cam 65, and the disc abutment portion 82 positions the disc.

  The disc abutting portion 82 is configured to rotate the disc centering member 81 by a predetermined amount to a position where the disc 6 abuts when the 8 cm disc 6 is conveyed and the 8 cm disc 6 is centered. When the 12 cm disc 7 is transported with the disc contact portion 82A, the disc 7 comes into contact with the second disc contact to rotate the disc centering member 81 by the same amount as the first disc contact portion 82A. And a contact portion 82B.

  The first disk contact part 82A and the second disk contact part 82B correct the difference in diameter between the 8 cm disk 6 and the 12 cm disk 7 by changing the distance from the shaft 84 and the phase in the rotation direction. Then, the rotation amount of the disk centering member 81 until the 8 cm disk 6 and the 12 cm disk 7 are centered is made substantially equal, and the 12 cm disk 7 interferes (contacts) with the first disk contact portion 82A. The 8 cm disk 7 does not interfere with the second disk contact portion 82B.

  The disk centering member 81 is rotatably mounted on the rotating cam 65 by inserting the shaft 84 into a bearing 86 provided on the rotating cam 65. Further, the disc centering member 81 has a long hole 87 formed in an arc shape with the shaft 84 as a center, and the bearing cylinder portion 70 provided in the rotary cam 65 is inserted into the long hole 87. Thus, the shaft 84 can be rotated around the shaft 84 within the range of the long hole 87.

  The first disc contact portion 82A and the second disc contact portion 82B are provided on the substantially opposite side of the elongated hole 87 with the shaft 84 as the center. As described above, the first disc contact portion 82A is in contact with the vicinity of the tip of the 8 cm disc 6 inserted from the disc inlet / outlet 3, and the second disc contact portion 82B is in contact with the first disc contact portion 82A. The tip of a 12 cm disc 7 inserted from the disc inlet / outlet 3 comes into contact.

  The first disk contact portion 82A is formed at a position farther from the shaft 84 than the second disk contact portion 82B. The second disk contact part 82B is formed at a position closer to the shaft 84 than the first disk contact part 82A and at a position where the 8 cm disk 7 does not contact. The difference between the distance from the shaft 84 to the first disc contact portion 82A and the distance from the second disc contact portion 82B is the disc centering member until the centering of the 8 cm disc 6 and the 12 cm disc 7 is completed. The amount of rotation 81 is set to be substantially the same.

  A semi-cylindrical protrusion 88 is provided at one end of the elongated hole 87. At the upper end of the semi-cylindrical protrusion 88, a hook-like tongue piece 89 is provided so as to cover the elongated hole 88, and the operation portion 83 is provided at the tip of the tongue piece 89, The operation unit 83 is configured to press a rack 134 of a gear switching mechanism 131 described later.

  As shown in FIG. 23, when the tip of the 8 cm disk 6 conveyed from the disk entrance / exit by the disk conveying mechanism 91 described below comes into contact with the first disk abutting portion 82A, the disk centering member 81 is It is pushed and rotates counterclockwise around the shaft 84.

  As shown in FIG. 24, when the central portion of the 8 cm disc 6 has moved to a position just above the disc table 12, the disc centering member 81 is prevented from further rotation by a stopper 85, and is The disk 6 is positioned, and the operation unit 83 pushes the rack 134 of the gear switching mechanism 131.

  Also, as shown in FIG. 25, when the second disk abutting portion 82B is pressed near the tip of the 12 cm disk 7 conveyed by the disk conveying mechanism 91, the disk centering member 81 It rotates counterclockwise about the shaft 84.

  As shown in FIG. 26, when the central portion of the 12 cm disc 7 has moved to a position just above the disc table 12, the disc centering member 81 is prevented from further rotation by a stopper 85, and the 12 cm disc 12 The disk 7 is positioned, and the rack 134 of the gear switching mechanism 131 is pressed by the operation portion 83.

(8) Configuration of the disc transport mechanism The disc transport mechanism transports the disc inserted into the disc entrance 3.

  As shown in FIGS. 27 and 28, the disc transport mechanism 91 transmits a motor 92 driven by the switch mechanism 61 and the rotation of the motor 92 to the first roller 32 and the second roller 33. A rotation transmission unit 93.

  The rotation transmission unit 93 includes a base plate side rotation transmission unit 94 (FIG. 27) provided on the base plate 4 and a top panel side rotation transmission unit 95 (FIG. 28) provided on the top panel 5. ing.

  As shown in FIG. 27, the rotation transmission portion 94 on the base plate side includes a first pulley 96 provided on the shaft of the motor 92, an endless belt 97 having one end hung on the first pulley 96, A second pulley 98 on which the other end of the endless belt 97 is hung, an eleventh gear 99 provided on the rotation shaft of the second pulley 98, and a twelfth gear meshing with the eleventh gear 99. The gear 100, the thirteenth gear 101 formed integrally with the twelfth gear 100, the fourteenth gear 102 meshed with the thirteenth gear 101, and the fourteenth gear 102 The swing gear 103 as the fifteenth gear, the sixteenth gear 104 with which the swing gear 103 as the fifteenth gear can mesh, and the seventeenth gear meshed with the sixteenth gear 104 Gear 105 and the seventeenth gear An eighteenth gear 106 meshed with 05, a nineteenth gear 107 meshed with the eighteenth gear 106, a twentyth gear 108 meshed with the nineteenth gear 107, and A twenty-first gear 109 meshed with the twentieth gear 108, a twenty-second gear 110 meshed with the twenty-first gear 109, and a twenty-third gear meshed with the sixteenth gear 104 111.

  The twenty-second gear 110 is rotatably attached to the outer periphery of the first shaft 41 that is the rotation center of the first arm 34, and the twenty-third gear 111 is rotated by the second arm 35. It is rotatably attached to the outer periphery of the second shaft 43 that is the center of movement.

  The swing gear 103 as the fifteenth gear is attached to a gear support member 113 that can swing about a shaft 112. The gear support member 113 includes a boss-like convex portion 114, and the boss-like convex portion 114 is engaged with a cam groove 138 provided in a gear switching member of a gear switching mechanism 131 described later. . The gear support member 113 meshes with the state in which the rocking gear 103 as the fifteenth gear meshes with the sixteenth gear 104 by rotating around the shaft 112 by sliding of the gear switching member. It is designed to be displaced to the released state.

As shown in FIG. 28, the rotation transmission portion 95 on the top panel 5 side is a 24th gear 115 rotatably attached to the outer periphery of the first shaft 41 that is the rotation center of the first arm 34. A 25th gear 116 meshed with the 24th gear 115, a 26th gear 117 meshed with the 25th gear 116, and a 25th gear 117 meshed with the 26th gear 117 27 gears 118, a 28th gear 119 rotatably attached to the outer periphery of the second shaft 43, which is the rotation center of the second arm 35, and the 28th gear 119. A 29th gear 120, a 30th gear 121 meshing with the 29th gear 120, and a 31st gear 122 meshing with the 30th gear 121 are provided. As shown in FIG. 6, the rotation transmitting portion 95 on the top panel 5 side has the chucking member support arm 23 of the disk chucking mechanism 21 raised on the top panel 5 at a predetermined inclination angle. When the motor 92 is rotated, the base plate side rotation transmission part 94 and the top panel side rotation transmission part 95 are arranged. The first roller 32 and the second roller 33 rotate to carry the disk.

(9) Configuration of Gear Switching Mechanism The gear switching mechanism is a mechanism that lifts and lowers a mechanism chassis lifting mechanism 151 described below by a motor 92 of the disk transport mechanism 91 to chuck and release the disk. In other words, the power of the motor 92 used for driving the disk transport mechanism 91 is switched to driving the mechanical chassis lifting mechanism.

  As shown in FIG. 29, the gear switching mechanism 131 includes a rack 134 that can mesh with a pinion gear 132 that is integral with a fourteenth gear 102 that forms a gear group of a rotation transmission unit of the disk transport mechanism 91, and the rack 134. And a gear switching member 135 that is slidably driven.

  The rack 134 is a linear gear that is slid by being pressed by the operation portion 83 of the disk centering member 81 when the disk is transported onto the disk table 12 by the disk transport mechanism 91 and meshed with the pinion gear 132. 133 is provided.

  The rack 134 and the gear switching member 135 are connected by a long hole 136 and a pin 137. When the rack 134 slides and the pin 137 contacts the end of the long hole 136, the rack 134 and the gear switching member 135 are connected. And slide together.

  The gear switching member 135 includes a first position where the swing gear 103 as a fifteenth gear constituting the gear group of the rotation transmission unit of the disk transport mechanism 91 is engaged with the sixteenth gear 104, and the first gear. There is provided a cam groove 138 for switching the oscillating gear to be moved between the second position where the meshing with the 16 gears 104 is released.

  The rocking gear switching cam groove 138 extends in the sliding direction of the gear switching member 135 to hold the rocking gear 103 in the first position, and one end of the first groove 139. An inclined second groove 140 that moves the swing gear 103 from the first position to the second position continuously to the first portion, and a gear switching member 135 that is continuous to one end of the second groove 140. And a third groove 141 that extends in the sliding direction and holds the rocking gear 103 in the second position. When a boss-like convex portion 114 provided on the gear support member 113 is located in the first groove portion 139, the swing gear 103 as the fifteenth gear is engaged with the sixteenth gear 104. Yes.

  The gear switching mechanism 131 is configured as described above, and as shown in FIG. 30, before the disc is inserted into the housing from the disc inlet / outlet, a boss-like convex portion 114 provided on the gear support member 113 is provided. Is located in the first groove 139 and meshes the rocking gear 103 with the sixteenth gear 104.

  Then, the disc is inserted into the housing 2 from the disc entrance 3 and the disc transport mechanism 91 is switched on. The disc is transported into the housing by the disc transport mechanism 91 and the disc centering member 81 is moved at the front end of the disc. When pushed and rotated, as shown in FIG. 31, the rack 134 is pressed by the operation portion 83 provided on the bowl-shaped tongue piece 89 of the disc centering member 81. The pressed rack 134 is in a state in which a so-called trigger is pulled, and the gear 133 of the rack 134 meshes with the pinion gear 132 integrated with the fourteenth gear 102 of the disk transport mechanism 91 and slides by the rotation of the pinion gear 132. To do.

  When the rack 134 slides by a predetermined amount, as shown in FIG. 32, the pin 137 comes into contact with the end of the long hole 136 and the gear switching member 135 slides together with the rack 134. When the gear switching member 135 slides by a predetermined amount, the boss-shaped protrusion 114 provided on the gear support member 113 moves from the first groove 139 into the third groove 141 via the second groove 140. To do.

  The boss-like convex portion 114 provided on the gear support member 113 moves to the third groove portion 141 through the second groove portion 140. At this time, the gear support member 113 is centered on the shaft 112. Rotating to disengage the swing gear 103 as the fifteenth gear and the sixteenth gear 104. Accordingly, the connection of the rotation transmission mechanism 93 of the disk transport mechanism 91 is cut off, and the rotation of the first roller 32 and the second roller 33 by the motor 92 is prevented. Then, as shown in FIG. 33, the mechanical chassis 11 is moved up and down while the boss-shaped convex portion 114 moves in the third groove portion 141.

(10) Configuration of Mechanical Chassis Lifting Mechanism The mechanical chassis lifting mechanism lifts the mechanical chassis toward the disk positioned substantially directly above the disk table by the disk centering member, and the disk mounted on the mechanical chassis. The disk is chucked on the table, and after the recording and / or reproduction on the disk is finished, the mechanical chassis is lowered to release the chucking of the disk and the disk can be ejected.

  As shown in FIG. 34, the mechanical chassis raising / lowering mechanism 151 has a cam engagement convex portion 152 provided on the free end side of the mechanical chassis 11 whose one end is rotatably attached to the base plate 4 by the pivot shaft 14. It is configured by engaging with a cam groove 153 for raising / lowering the mechanical chassis provided on the side surface of the gear switching member 135.

  The cam groove 153 for raising / lowering the mechanical chassis is continuous with a first cam groove portion 154 that holds the mechanical chassis 11 in a lowered position (disc chucking release position) and one end portion of the first cam groove portion 154. A second cam groove 155 that raises the mechanical chassis 11 from the lowered position, and a third cam groove 11 that is continuous with one end of the second cam groove 155 and holds the mechanical chassis 11 in the raised position (disk chucking position). Cam groove portion 156.

  Before the disk is inserted into the housing from the disk entrance / exit, as shown in FIG. 34, the cam engaging convex part 152 provided on the mechanical chassis 11 is positioned in the first cam groove part 154 so that the mechanical chassis 11 is moved. It is held at the lowered position (disc chucking release position).

  When the disk is inserted into the housing from the disk inlet / outlet, the disk transport mechanism 91 is turned on, and the gear switching member 135 is slid by a predetermined amount together with the rack 134, as shown in FIG. The cam engaging convex portion 152 moves from the first groove portion 154 to the third groove portion 156 via the second groove portion 155, and holds the mechanical chassis 11 in the raised position (disc chucking position).

(11) Constitution of the transport roller contact / separation mechanism The transport roller contact / separation mechanism performs recording and / or reproduction on the disk by separating the transport roller from the disk after completion of the disk chucking and making the disk rotation free. Sometimes it is for bringing the transport roller into contact with the disk.

  As shown in FIG. 30, the transport roller contact / separation mechanism 161 is slidably attached to the end of the gear switching member 135 by a long hole 162 and a pin 163 within the length of the long hole 162. Rotating cam operating body 164, first and second protrusion engaging portions 166, 167 provided on the rotating cam operating body 164 and engaged with protrusions 165 provided on the gear switching member 135, and the switch mechanism And a roller contact / separation protrusion 168 provided on the rotation cam 65 of the motor 61.

  Then, as shown in FIG. 33, when the gear switching member 135 continuously moves after the end of the disk chucking, the slide of the gear switching member 135 causes the projection 165 to be second as shown in FIG. The rotary cam operating body 164 is slid by engaging with the protrusion engaging portion 167. When the rotating cam operating body 164 slides, a protrusion engaging portion 169 provided at an end of the rotating cam operating body 164 engages with the roller contacting / separating protrusion 168 to rotate the rotating cam 65.

  When the rotary cam 65 is rotated, the first arm 34 and the second arm 35 are rotated in a direction away from each other via the synchronous drive gear group 38 of the disk insertion guide mechanism 31, so that the first The arm 34 and the second arm 35 are separated from the peripheral surface of the disk, so that the disk is in a rotation-free state. The rotary cam operating body 164 is attached to the gear switching member 135 by the long hole 162 and the pin 163 so as to be movable relative to the gear switching member 135. This is to prevent interference with 65.

(12) Configuration of Disc Duplication Insertion Prevention Mechanism The disc duplication insertion prevention mechanism informs that the disc has already been inserted into the casing by blocking the disc entrance when the disc has already been inserted into the casing. The other disc cannot be inserted, and is provided at a substantially central portion of the disc entrance.

  As shown in FIGS. 41 and 42, the disc overlap insertion preventing mechanism 171 biases the disc insertion preventing member 172 capable of blocking the disc entrance 3 and the disc insertion preventing member 172 to a position where the disc entrance 3 is blocked. Urging member 173, and a disc insertion preventing member operating mechanism for moving the disc insertion preventing member 172 from a position for blocking the disc entrance 3 to a position for opening the disc entrance 3 against the urging force of the urging member 173 174.

  The disc insertion blocking member 172 includes a blocking member main body portion 175 that is inserted into and removed from the central portion of the disk inlet / outlet port 3 and a base portion 176 provided with the blocking member main body portion 175 at the distal end portion. The base portion 176 has a shaft. A base plate 4 is pivotally attached to the base plate 4 by 177. When the base 176 is rotated in one direction around the shaft 177, the blocking member main body 175 provided at the tip of the base 176 enters the disk entrance 3 through the hole 178 provided in the base plate 4. Thus, the central part of the disk entrance 3 is blocked. When the disc insertion blocking member 172 is integrally molded with a synthetic resin and is pressed by a disc to be inserted in a state where the central portion of the disc inlet / outlet 3 is blocked, the blocking member main body portion 175 is pressed. The front end portion and the base end portion are pressed against the opening / closing member receiving portion 179a on the top panel side and the opening / closing member receiving portion 179b on the base plate side to prevent the discs from being inserted repeatedly.

  The biasing member 173 has one end locked to the base 176 and the other end locked to the base plate 4, and the disk insertion blocking member 172 rotates counterclockwise about the shaft 177. The blocking member main body 175 is caused to enter the disk entrance / exit 3 through a hole 178 provided in the base plate 4. A coil spring is used for the urging member 173.

  As shown in FIG. 43, the disk insertion blocking member operating mechanism 174 is inserted into the base 176 and the base plate 4 and presses the base 176 against the biasing force of the biasing member 173. A pressing operation portion 181 having a convex portion 180 having a shape, a slide member 182 provided with the pressing operation portion 181, and a pinion 184 engaged with a rack-like gear 183 provided on one side surface of the slide member 182. It is equipped with. The pinion 184 meshes with a rack-like gear 185 provided on the gear switching member 135.

  Before the disc is inserted into the housing from the disc entrance 3, the trapezoidal convex portion 180 enters between the base portion 176 and the base plate 4, as shown in FIGS. 42 to 44. The base 176 is pressed against the urging force of the urging member 173, and the blocking member main body 175 is extracted from the disk inlet / outlet 3 to open the disk inlet / outlet 3.

  When the disk is inserted into the housing from the disk entrance 3, the motor 92 is switched on as described above, the disk is transported by the disk transport mechanism 91, and the disk centering member 81 is rotated. The rack 134 is pressed, and the gear switching member 135 slides as a trigger, and the pinion 184 meshed with the linear gear 185 provided on the gear switching member 135 rotates, and the pinion 184 is rack-shaped. The slide member 182 engaged with the gear 183 also slides in conjunction with the gear switching member 135. When the gear switching member 135 is slid to the position where the mechanical chassis 11 is raised to the disk chucking position by the cam groove 153 for raising / lowering the mechanical chassis provided on the side surface thereof, FIG. 41, FIG. 45, FIG. As shown in FIG. 6, in the slide member 181, the trapezoidal cam portion 180 of the pressing operation portion 181 comes out from between the base portion 176 and the base plate 4 to release the pressing of the base portion 176. Accordingly, the base 176 is rotated by the urging force of the urging member 176, and the blocking member main body 175 enters the disk inlet / outlet 3 from the hole 178 provided in the base plate 4 and enters the center of the disk inlet / outlet 3. Block the part. In the above embodiment, the blocking member main body 175 and the base 176 are formed of synthetic resin. However, a metal pin is used for the blocking member main body 175, and the metal pin is used as the synthetic resin base 176. May be planted.

(13) Operation Next, the operation of the disc recording and / or reproducing apparatus will be described separately for the case where an 8 cm disc is inserted and the case where a 12 cm disc is inserted.

When an 8 cm Disc is Inserted As shown in FIGS. 12, 13 and 49, when an 8 cm disc 6 is inserted from the disc insertion port 225 of the disc attitude control member 205 of the disc drop prevention mechanism 201, The front end is pushed against the first and second sheet portions 211 and 212 of the disk drop prevention mechanism 201, and the first frame portion 221 rotates in the escape direction to pass the 8-cm disk 6. On the other hand, since the second frame portion 222 is fixed, it does not rotate, and the second sheet portion 212 attached to the second frame portion 222 bends and presses against one main surface of the 8 cm disc 6. When the 8 cm disc 6 is further inserted, the tip portion of the disc 6 comes into contact with the peripheral surfaces of the first roller 32 and the second roller 33.

  When the 8 cm disc 6 is further inserted, the distance between the first roller 32 and the second roller 33 is increased, so that the first arm 34 and the second arm 35 widen each other. To turn. At this time, the first and second rollers 32 and 33 are in a state of biting on the peripheral surface of the 8 cm disk 6. The rotation cam 65 of the switch mechanism 61 is rotated via the interlocking gear group 66 by the rotation of the first arm 34 and the second arm 35, and the second cam surface 72 provided on the rotation cam 65 performs the first operation. 1 switch 62a is turned on. When the first switch 62 a is turned on, the motor 92 of the disk transport mechanism 91 rotates, and the rotation of the motor 92 is transmitted to the first roller 32 and the second roller 33 via the rotation transmission unit 93. .

  As the first roller 32 and the second roller 33 rotate, the 8-cm disk 6 is conveyed into the housing. When the 8 cm disc 6 is conveyed to a predetermined position and the tip of the disc 6 comes into contact with the first disc abutting portion 82A and is pushed, the disc centering member 81 is counterclockwise about the shaft 84. Rotate. When the central portion of the 8 cm disc 6 is moved almost directly above the disc table 12, the disc centering member 81 is prevented from further rotation by the stopper 85, and the 8 cm disc 6 is positioned. Is done.

  When the disk centering member 81 rotates, the rack 134 is pressed by the operation portion 83 provided on the bowl-shaped tongue piece 89 of the disk centering member 81. This pressing acts as a trigger, and the rack 134 is engaged with the small-diameter gear 132 integral with the fourteenth gear 102 of the disk transport mechanism 91 and slides.

  When the rack 134 slides by a predetermined amount, the pin 137 comes into contact with the end of the long hole 136 and the gear switching member 135 slides together with the rack 134. When the gear switching member 135 slides by a predetermined amount, the shaft 138 provided on the gear support member 113 moves from the first groove portion 140 into the third groove portion 142 via the second groove portion 141.

  As the shaft 138 provided on the gear support member 113 moves into the third groove 142, the gear support member 112 rotates around the shaft 138 to rotate the 15th gear 103 and the 16th gear 104. Remove the mesh. Accordingly, the connection of the rotation transmission portion 93 of the disk transport mechanism 91 is cut off, and the rotation of the first roller 32 and the second roller 33 by the motor 92 is prevented.

  Even when the connection of the rotation transmission unit 93 of the disk transport mechanism 91 is interrupted, the rotation of the motor 92 is caused by the first pulley 96, the endless belt 97 that is hung at one end on the first pulley 96, A second pulley 98 on which the other end of the endless belt 97 is hung, an eleventh gear 99 provided on the rotation shaft of the second pulley 98, and a twelfth gear meshing with the eleventh gear 99 100, a thirteenth gear 101 meshed with the twelfth gear 100, a fourteenth gear 102 meshed with the thirteenth gear 101, a small-diameter gear 132 integrated with the fourteenth gear 102, and a rack It is transmitted to the gear switching member 135 via 134 and the gear switching member 135 is slid.

  When the gear switching member 135 is slid, the cam engaging convex portion 152 provided on the free end side of the mechanical chassis 4 is the second of the cam groove 153 for raising / lowering the mechanical chassis provided on the side surface of the gear switching member 135. Are introduced into the third cam groove portion 156 through the cam groove portion 155 to raise the mechanical chassis 4 to the disk chucking position. When the mechanical chassis 4 rises to the disk chucking position, the arm operating member 27 is operated by a protrusion (not shown) provided on the mechanical chassis 4 to release the pressing of the chucking member support arm 23 by the arm operating member 27. Then, the chucking member support arm 23 is lowered by the spring force of the torsion coil spring 28 and overlaps the upper surface of the top panel 5. As the mechanical chassis 4 is raised and the chucking member support arm 23 is lowered, the 8-cm disk 6 is placed on the disk table 12 and is chucked by the disk table 12 and is chucked. As a result, the magnet is chucked on the disk table. On the other hand, the slide member 182 slides through the rack-shaped gear 185, the pinion 184, and the rack-shaped gear 183 by the sliding of the gear switching member 135, and the trapezoidal cam of the pressing operation portion 181 provided on the slide member 182. The blocking member main body 175 is provided on the base plate 4 by the spring force of the coil spring as the urging member 173 as the part 180 comes out from between the base 176 and the base plate 4 to release the pressing of the base 176. The hole 178 enters the inside of the disk inlet / outlet 3 to close the center of the disk inlet / outlet 3, and the mechanical chassis 11 is locked at the disk chucking position by the chucking lock part 199 of the mechanical chassis locking mechanism 191.

  When the gear switching member 135 is further slid after the 8-cm disk 6 is magnet chucked on the disk table 12, as shown in FIG. 36, the end of the rotary cam operating body 164 assembled to the gear switching member 135 is obtained. The protrusion engaging portion 169 provided on the rotating portion engages with the roller contact / separation protrusion 168 provided on the rotating cam 65 to rotate the rotating cam 65, and the rotating cam operating body 164 provided on the gear switching member 135. The third switch 62c is turned on by the third switch operation unit 63 provided in the above.

  The rotation of the rotary cam 65 causes the first arm 34 and the second arm 35 to rotate away from each other via the synchronous drive gear group 38 of the disk insertion guide mechanism 31, as shown in FIG. As shown, the first arm 34 and the second arm 35 are separated from the peripheral surface of the 8-cm disk 6 so that the disk is in a rotation-free state. Then, recording and / or reproduction of an 8 cm disc is performed.

  When the eject button is pressed after the recording and / or reproduction is finished, the motor 92 is rotated in reverse, and the reverse operation is performed when the disc is inserted, and the 8 cm disc 6 is ejected to the disc inlet / outlet 3 side. When the disc is ejected, as shown in FIG. 14, when the front end of the disc hits against the first and second sheet portions 211 and 212 at a position blocking the disc entrance, the first frame portion 221 is pressed. Since it is impossible to rotate in the disc ejection direction, the escape rotation cannot be performed, and the first sheet portion 211 is bent and pressed against one main surface of the 8 cm disc 6, and the second frame portion. Since 222 is also fixed, it does not rotate, and the second sheet portion 212 attached thereto is bent and pressed against the other main surface of the 8 cm disc 6 so that the 8 cm disc 6 does not roll off. To hold. Then, the mechanical chassis 11 is locked at the disk chucking release position by the locking unit 192 when the chucking release of the mechanical chassis lock mechanism 191 is performed.

When a 12 cm disc is inserted As in the case of the 8 cm disc 6, as shown in FIGS. 12, 13 and 51, the 12 cm disc 7 is inserted into the disc insertion port 225 of the disc attitude control member 205 of the disc drop prevention mechanism 201. When inserted from above, the tip of the 12 cm disc 7 is pushed against the first and second sheet portions 211 and 212 of the disc drop prevention mechanism 201, and the first frame portion 221 rotates in the escape direction to 12 cm. Pass the disc 7 through. On the other hand, since the second frame portion 222 is fixed, the second frame portion 222 does not rotate, and the second sheet portion 212 attached to the second frame portion 222 bends and presses against one main surface of the 12 cm disc 7. When a 12 cm disc 7 is further inserted, the tip portion of the disc 7 comes into contact with the peripheral surfaces of the first roller 32 and the second roller 33. When a 12 cm disc 7 is further inserted, the distance between the first roller 32 and the second roller 33 is increased, so that the first arm 34 and the second arm 35 increase the distance between each other. To turn. The rotation cam 65 of the switch mechanism 61 rotates through the interlocking gear group 66 by the rotation of the first arm 34, and the first switch 62 a is turned on by the second cam surface 72 provided on the rotation cam 65. Put it in a state. When the first switch 62 a is turned on, the motor 92 of the disk transport mechanism 91 rotates, and the rotation of the motor 92 is transmitted to the first roller 32 and the second roller 33 via the rotation transmission unit 93. .

  The 12-cm disk 7 is conveyed into the housing 2 by the rotation of the first roller 32 and the second roller 33, and the first arm 34 and the second arm 35 are spaced from each other. Rotate to widen. Since the 12 cm disk 7 is 4 cm larger in diameter than the 8 cm disk 6, the first arm 34 and the second arm 35 rotate more than that, so the rotating cam 65 of the switch mechanism 61 is also 8 cm. Compared with the case of the disk 6, it rotates extra. By this rotation, the second switch 62b is also turned on at the third cam surface 73, and both the first switch 62a and the second switch 62b are turned on.

  When the central portion of the 12 cm disc 7 is moved almost directly above the disc table 12, the disc centering member 81 is prevented from further rotation by the stopper 85, and the 12 cm disc 7 is positioned. Is done.

  As in the case of the 8-cm disk 6, when the disk centering member 81 rotates, the rack 134 is pressed by the operation portion 83 provided on the bowl-shaped tongue piece 89 of the disk centering member 81. This pressing acts as a trigger, and the rack 134 is engaged with the small-diameter gear 132 integral with the fourteenth gear 102 of the disk transport mechanism 91 and slides.

  When the rack 134 slides by a predetermined amount, the pin 137 comes into contact with the end of the long hole 136 and the gear switching member 135 slides together with the rack 134. When the gear switching member 135 slides by a predetermined amount, the shaft 138 provided on the gear support member 113 moves from the first groove portion 140 into the third groove portion 142 via the second groove portion 141.

  As the shaft 138 provided on the gear support member 113 moves into the third groove 142, the gear support member 112 rotates around the shaft 138 to rotate the 15th gear 103 and the 16th gear 104. Remove the mesh. Accordingly, the connection of the rotation transmission portion 93 of the disk transport mechanism 91 is cut off, and the rotation of the first roller 32 and the second roller 33 by the motor 92 is prevented.

  Even when the connection of the rotation transmission unit 93 of the disk transport mechanism 91 is interrupted, the rotation of the motor 92 is caused by the first pulley 96, the endless belt 97 that is hung at one end on the first pulley 96, A second pulley 98 on which the other end of the endless belt 97 is hung, an eleventh gear 99 provided on the rotation shaft of the second pulley 98, and a twelfth gear meshing with the eleventh gear 99 100, a thirteenth gear 101 meshed with the twelfth gear 100, a fourteenth gear 102 meshed with the thirteenth gear 101, a small-diameter gear 132 integrated with the fourteenth gear 102, and a rack It is transmitted to the gear switching member 135 via 134 and the gear switching member 135 is slid.

  When the gear switching member 135 is slid, the cam engaging convex portion 152 provided on the free end side of the mechanical chassis 4 is the second of the cam groove 153 for raising / lowering the mechanical chassis provided on the side surface of the gear switching member 135. Are introduced into the third cam groove portion 156 through the cam groove portion 155 to raise the mechanical chassis 4 to the disk chucking position. When the mechanical chassis 4 rises to the disk chucking position, the arm operating member 27 is operated by a protrusion (not shown) provided on the mechanical chassis 4 to release the pressing of the chucking member support arm 23 by the arm operating member 27. Then, the chucking member support arm 23 is lowered by the spring force of the torsion coil spring 28 and overlaps the upper surface of the top panel 5.

  As described above, as the mechanical chassis 4 is raised and the chucking member support arm 23 is lowered, the 12 cm disk 6 is placed on the disk table 12 and chucked by being magnetically attracted to the disk table 12 side. The member 22 is magnetically chucked on the disk table. On the other hand, the slide member 182 slides through the rack-shaped gear 185, the pinion 184, and the rack-shaped gear 183 by the sliding of the gear switching member 135, and the trapezoidal cam of the pressing operation portion 181 provided on the slide member 182. The blocking member main body 175 is provided on the base plate 4 by the spring force of the coil spring as the urging member 173 as the part 180 comes out from between the base 176 and the base plate 4 to release the pressing of the base 176. The hole 178 enters the inside of the disk inlet / outlet 3 to close the center of the disk inlet / outlet 3, and the mechanical chassis 11 is locked at the disk chucking position by the chucking lock part 199 of the mechanical chassis locking mechanism 191.

  When the gear switching member 135 is further slid after the 12 cm disk 7 is magnet chucked on the disk table 12, as shown in FIG. 36, the end of the rotary cam operating body 164 assembled to the gear switching member 135 is obtained. The protrusion engaging portion 169 provided on the rotating portion engages with the roller contacting / separating protrusion 168 provided on the rotating cam 65 to rotate the rotating cam 65 and the third switch operating portion provided on the rotating cam operating body 164. In 63, the third switch 62c is turned on.

  The rotation of the rotary cam 65 causes the first arm 34 and the second arm 35 to rotate away from each other via the synchronous drive gear group 38 of the disk insertion guide mechanism 31, as shown in FIG. As shown, the first arm 34 and the second arm 35 are separated from the circumferential surface of the 12 cm disk 7 so that the disk 7 is free to rotate. Then, recording and / or reproduction of a 12 cm disc is performed.

  When the eject button is pressed after the recording and / or reproduction is finished, the motor 92 is reversed, and the reverse operation is performed when the disc is inserted. As described in the section of the switch mechanism, the duty is 33% from the second switch 62b in the third cam surface 73 until the first switch 62a is turned off. As shown in FIGS. 37 and 38, the REV signal alternately transmits L and H at 8 msec and 4 msec, and the motor 92 is intermittently turned on and off. Accordingly, the motor 92 reduces the disk transport speed by the motor 92 while maintaining the rotational drive voltage, so that the 12 cm disk 7 pops out of the disk insertion slot due to the synergistic effect with the disk drop prevention mechanism 201. Is surely prevented.

  Further, even when the disk recording and / or reproducing apparatus is used in the vertical state, the downward bias of the 12 cm disk 7 due to gravity is corrected by the disk attitude control member to prevent the disk from rolling down. can do.

The perspective view of the recording and / or reproducing | regenerating apparatus of this invention. The perspective view which looked at the recording and / or reproducing | regenerating apparatus of this invention from the back side. The perspective view of the state which removed the disk drop prevention mechanism. The side view of a state in which the mechanical chassis is in the disc chucking release position. The side view in the state where a mechanical chassis exists in a disk chucking position. Sectional drawing of a disk chucking mechanism. (Chucking release position). Sectional drawing of a disk chucking mechanism. (Chucking position). The perspective view of the state which removed the disk attitude | position control member from the disk drop prevention mechanism. The disassembled perspective view of a gate sheet support frame. The perspective view of the state which decomposed | disassembled the 1st sheet | seat part and the 1st frame part. The perspective view of the state which decomposed | disassembled the 2nd sheet | seat part and the 2nd frame part. Sectional drawing of the principal part of a disk drop prevention mechanism. Sectional drawing of a disc insertion state. Sectional drawing of a disc discharge state. The top view of a disc insertion guide mechanism. The top view of the state which the 1st, 2nd arm opened most. The side view of the 1st, 2nd roller. Explanatory drawing of a switch mechanism (a 1st, 2nd switch is an OFF state). Explanatory drawing of a switch mechanism (a 1st switch is ON and a 2nd switch is an OFF state). Explanatory drawing of a switch mechanism (a 1st, 2nd switch is an ON state). The perspective view of a rotation cam and a disk centering member. The perspective view which looked at the rotating cam and the disk centering member from the back side. Explanatory drawing which shows the state which the disk of 8 mm contact | abutted to the disk centering member. Explanatory drawing which shows the state by which the disk of 8 mm was disc-centered. Explanatory drawing which shows the state which the disk of 12 mm contact | abutted to the disk centering member. Explanatory drawing which shows the state by which the disc of 12 mm was disc-centered. The top view which shows the rotation transmission part by the side of a baseplate. The top view which shows the rotation transmission part by the top plate side. The perspective view of the principal part of a gear switching mechanism and a disk centering member. Explanatory drawing which shows the effect | action of a gear switching mechanism. Explanatory drawing which shows the effect | action of a gear switching mechanism. Explanatory drawing which shows the effect | action of a gear switching mechanism. Explanatory drawing which shows the effect | action of a gear switching mechanism. Schematic explanatory drawing of a disk raising / lowering mechanism (disc chucking cancellation | release state). Schematic explanatory drawing (disc chucking state) of the disc lifting mechanism. Explanatory drawing of the state in which the disc contact / separation mechanism is activated. The timing chart which shows the effect | action of the switch mechanism 61, and the figure which shows the combination of each signal. The enlarged view of the principal part (circular part) of FIG. The control block diagram of a motor. The table which shows the relationship between the height (H, L) and output (State) of each signal. Explanatory drawing which shows the state which interrupted | blocked the disc entrance by the disc duplication insertion prevention mechanism. Explanatory drawing which shows the state which open | released the disc entrance by the disc duplication insertion prevention mechanism. The top view of the principal part of a disc duplication insertion prevention mechanism (disc door opening state). AA sectional drawing of FIG. The top view of the principal part of a disc duplication insertion prevention mechanism (blocking state of a disc entrance). FIG. 46 is a sectional view taken along line BB in FIG. 45. The perspective view of the state which has locked the mechanical chassis to the disk chucking release position. The perspective view of the state which has locked the mechanical chassis to the disk chucking position. The top view of the state which is conveying the 8mm disc. The top view of the state which the conveyance roller left | separated from the disk. The top view of the state which is conveying the 12mm disc. Sectional drawing which shows a prior art example. Sectional drawing which shows a prior art example. Sectional drawing which shows a prior art example. The top view which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Disc recording and / or reproducing | regenerating apparatus, 2 ... Housing | casing, 3 ... Disc entrance / exit, 4 ... Base plate, 5 ... Top panel, 6 ... 8mm disc, 7 ... 12mm disc, 91 ... Disc conveyance mechanism, 201 ... Disc drop prevention mechanism, 202 ... cut, 203 ... gate sheet, 204 ... gate sheet support frame, 205 ... disc posture control member, 211 ... first sheet portion, 212 ... second sheet portion, 221 ... first frame Part, 222 ... second frame part, 222k ... elastic member.

Claims (4)

A housing provided with a disk inlet / outlet for loading / unloading a disk, a disk transport mechanism for inserting / removing a disk into / from the housing, and a disk drop prevention for holding a disk ejected by the disk transport mechanism so as not to drop out of the disk doorway A gate sheet having a notch through which the disc passes and the disc passes, and a gate sheet supporting the gate sheet in a state facing the disc entrance side A support frame ,
The gate sheet is divided into first and second sheet portions at the cut,
Said seat support frame, wherein the first frame portion for supporting the first seat, the second frame portion for supporting the second sheet portion, is divided into Lud disc recording and / or reproducing in the device,
The first frame portion can be pivoted in the disc insertion direction from a position closing the disc inlet / outlet, and cannot be rotated in the disc ejection direction from the position closing the disc inlet / outlet. A disk recording and / or reproducing apparatus , wherein the second frame portion is attached to the housing so as not to rotate .   2. The disc recording and / or reproducing apparatus according to claim 1, wherein the frame portion rotatably attached in the disc insertion direction is provided with a restoring force after insertion of the disc by an elastic member.   2. The disc recording and / or reproducing apparatus according to claim 1, wherein the disc ejection of the disc transport mechanism is decelerated immediately before the disc ejection operation is finished.   The disk drop prevention mechanism includes a disk attitude control member for controlling a downward biasing attitude of the disk due to gravity when the disk recording and / or reproducing apparatus is vertically installed with the disk inlet / outlet oriented vertically. The disk recording and / or reproducing apparatus according to claim 1.

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