JPH0719835U - Disc loading device - Google Patents

Abstract

(57) [Abstract] [Purpose] In a disc loading device, it is possible to stably, swiftly and surely carry and attach a disc to a disc mounting portion. A first roller on the signal recording surface side of the disk is used as the disk conveying roller by contacting a signal non-recording surface of the disk or arranging guide means on the downstream side of the disk conveying roller with respect to the disk loading direction. And a drive roller 91 as a second roller on the signal non-recording surface side of the disc, and the drive roller 91 is arranged slightly upstream of the passive roller 92 in the loading direction of the disc. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a disc loading device for mounting a disc on a disc mounting portion provided to support and rotate the disc in a disc player.

[0002]

[Prior art]

 2. Description of the Related Art There is known a disc player with a disc changer equipped with a disc changer mechanism capable of exchanging a disc mounted in a disc mounting portion within a range of a plurality of discs prepared in advance. In some disc changer mechanisms installed in such disc players, a disc pack capable of accommodating a plurality of discs is detachably attached to perform a disc exchange operation.

[0003]

[Problems to be solved by the device]

 In such a disc player or the like, in order to achieve the loading operation, a disc loading device that surely conveys the disc to the disc mounting portion without damaging the signal recording surface of the disc is required.

In view of such a point, the present invention is used, for example, to form a disc changer mechanism of a disc player, and quickly mounts a disc in a disc mounting portion without damaging a signal recording surface of the disc. It is an object of the present invention to provide a disc loading device that can be reliably performed.

[0005]

[Means for Solving the Problems]

 The disc loading device according to the present invention has a guide means for contacting a signal non-recording surface of the disc, which is arranged on the downstream upper side of the disc conveying roller in the disc loading direction. It is composed of a first roller on the recording surface side and a second roller on the signal non-recording surface side of the disk, and the first roller and the second roller are second with respect to the disk loading direction. The roller is arranged slightly upstream of the first roller.

[0006]

[Action]

 With this configuration, the disc is fed in the common tangential direction of both rollers (the direction orthogonal to the line connecting both roller axes), and the signal non-recording surface of the disc is conveyed while contacting the guide means.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an essential part of a disk loading device according to the present invention.

In this example, the movable chassis 66 is configured to move up and down with respect to the disk mounting portion by a mechanism described later, and a driving roller 91 and a driven roller 92 are vertically arranged on the front portion of the movable chassis 66, and As is apparent from FIG. 2, the driving roller 91 is arranged so as to face the driving direction of the disk so as to be positioned slightly upstream of the driven roller 92. The upper roller, that is, the drive roller 91, is pivotally supported by a support plate 93 as shown in FIG. 2, and the support plate 93 also rotatably supports a guide roller 100 located behind the drive roller 91. Is connected to the movable chassis 66 via front and rear link members 94a and 94b, and the drive roller 91 can be brought into and out of contact with a driven roller 92 which is axially supported by the rising portion of the movable chassis 66.

A gear 120 is fixed to the shaft of the drive roller 91. The gear 120 and a two-stage gear 121 coaxially rotatably supported on the shaft support portion of the front side link member 94 a for the movable chassis 66. The front link member 94a is interlocked via an intermediate gear 122 axially supported by the intermediate portion, and the intermediate gear 122 is meshed with the small gear portion of the two-step gear 121.

A large gear portion of the two-stage gear 121 is meshed with a gear 72 rotatably supported coaxially with the driven roller 92 in the rising portion of the movable chassis 66. A motor 77 is arranged on the lower surface side of the movable chassis 66, and the driving force is transmitted to the gear 72 via the intermediate gear group 78. Therefore, the driving roller 91 is rotated by the rotational force of the gear 72 rotated by the motor 77 being transmitted to the gear 120 via the two-step gear 121 and the intermediate gear 122.

Since the support plate 93 of the drive roller 91 is urged downward by the spring 123, the driven roller 92 is pressed against the peripheral surfaces of both ends thereof and rotates in accordance with the rotation of the drive roller 91 when the disc is not sandwiched. If the disc is inserted, it is rotated by the transfer of the disc. In this case, even if the support plate 93 moves up and down, the two-stage gear 121 is coaxially supported by the shaft support portion of the rotatable link member 94a so that the rotation transmission to the drive roller 91 does not cause any trouble. Done.

By fixing the gear 72 to the shaft of the driven roller 92, the driven roller 92 is also driven by the motor 77. In this case as well, the gear 72 meshes with the drive roller 91 and the driven roller 92. Since the intermediate gear 122 is interposed between the two-stage gear 121 and the gear 120 fixed to the drive roller 91, the intermediate gear 122 is reversely rotated, and the disc is stably transported by the rotation of both rollers 91 and 92 which are sandwiched. It will be. In this case, since the pressure contact force between the rollers 91 and 92 may be weak, the spring 123 for urging the support plate 93 may have a small biasing force. Further, in this case, the number of teeth of the gears 120, 121 and 122 is designed so that the rotation speed of the gear 72 and the rotation speed of the gear 120 are the same.

In this way, the disk inserted between the driving roller 91 and the driven roller 92 by rotating the driving roller 91 by the motor 77 is guided by the guide roller 100 inward of the movable chassis 66. Then, the central portion thereof is moved to a position corresponding to the clamp member 97 supported by the clamp arm 96 and stopped as described later.

The driving roller 91 and the driven roller 92 described above are formed of a material having elasticity such as silicone rubber, and the rollers 91, 92 and the guide roller 100 have a small central portion and gradually move toward both sides. It is formed to have a large diameter so that only the edge of the disk abuts against each roller.

Next, an example of the disc pack will be described with reference to FIGS. 3 and 4. 3 is an exploded perspective view showing the whole thereof, and FIG. 4 is a transverse sectional view thereof. In this disc pack 1, an opening 3 for inserting and removing the disc D is provided on one side surface of the casing 2, and a disc storage portion 4 is provided in the casing 2. A plurality of U-shaped partition plates 5 are arranged in parallel in the disc storage portion 4 and are arranged at the same intervals to form a plurality of storage steps, and the discs D are parallel to each other by the respective partition plates 5. It is supported and stored in a stacked state. The disk storage portion 4 is formed integrally with the casing 2 by using, for example, a synthetic resin material or the like.

A bearing hole 6 is provided in the outer wall of the disc housing portion 4, and a shaft 8 of a disc setting lever 7 is inserted therein. At one end of the disc setting lever 7, the disc D supported by the partition plate 5 of the disc storage portion 4 is moved to the regular storage position in the disc storage portion 4 by pressing the outer peripheral edge portion thereof. The drive pin 9 is installed. The other end of the disc setting lever 7 is provided with a driven piece 11 that projects to the outside through a through hole 10 formed in the bottom plate 2a of the casing 2. The disc setting lever 7 can rotate about a shaft 8 but is normally biased by a spring 12 in a direction indicated by an arrow a as shown in FIG. Takes a stationary state in which it contacts the rotation restricting portion 13 provided on the inner wall of the box 2. As shown in FIG. 3, the bottom plate 2a of the box 2 is provided with a groove 14 extending from the through hole 10 to the one end face and a locking recess 15 as well.

Further, a comb-teeth-shaped leaf spring 16 is attached to the disc housing portion 4 and has a role of preventing undesired movement of the disc D due to vibration or the like. This leaf spring 16 has projecting plate portions 16a in a number corresponding to the number of partition plates 5, that is, the number of discs D that can be stored, and the bent portions 16b of each projecting plate portion 16a are for storing discs. Between the partition plates 5 adjacent to each other through the partition portion 17 (FIG. 4) formed in the portion 4 (in the upper part of the disk storage portion 4, the upper plate of the casing 2 and the partition plate 5 adjacent thereto). However, this will also be referred to as the space between the partition plates 5 hereinafter) and abuts the outer peripheral edge of the disk D in the stored state to prevent undesired movement of the disk D. .

Further, as shown in FIGS. 1 and 2, a guide groove 20 is formed on the side surface adjacent to the side surface on which the opening 3 of the box 2 is provided, and the guide groove 20 is positioned therein. A plurality of sliders 22 are provided which are held by a holding metal fitting 21 and are movable in a direction along the surface of the housed disk D. The sliders 22 are for selectively sending out the stored discs D, and are arranged so as to face each other between the partition plates 5 of the disc storage portion 4. As shown in FIG. 4, one end of the slider 22 protrudes between the partition plates 5 through a slit 23 penetrating from the outer surface of the casing 2 toward the partition plates 5, and is housed in the disk D. Is provided with a sending piece 24 that abuts the outer peripheral edge of the slider 22, and a driven piece 26 that projects outward from a slit 25 (FIG. 3) formed in the holding metal fitting 21 is provided at the other end of the slider 22. It is provided. The slider 22 is moved by driving the driven piece 26.

With such a configuration, when the slider 22 is moved in the direction of arrow c in FIG. 4 in a state where the disc D is placed in the regular storage position, the delivery piece 24 of the slider 22 is moved accordingly. While pressing the outer peripheral edge portion of D, it is moved from the position shown by the solid line in FIG. 4 to the position shown by the alternate long and short dash line. As a result, the disk D is moved to a position where a part thereof protrudes from the opening 3, that is, is sandwiched between the driving roller 91 and the driven roller 92, as shown by the chain line in FIG.

The driving of the disc setting lever 7 and the slider 22 is performed by a disc changer mechanism in a disc player with a disc changer, to which the disc pack 1 is attached, as described below.

FIG. 5 shows an essential part of an example of a disc changer mechanism, which is configured by using an example of the disc loading device according to the present invention and on which the above-mentioned disc pack 1 is mounted. This example has a chassis 27, and on the chassis 27, a disk mounting portion 28 which is rotationally driven by a spindle motor to support and rotate the disk, and a disk mounting portion 28 which is mounted and rotated. An optical pickup 29 for reading an information signal from the disk D is installed, and a pack mounting table 30 on which the above-mentioned disk pack 1 is mounted is installed. The pack mounting base 30 is provided with an internal convex portion 31 that engages with the groove 14 (FIG. 3) provided on the bottom surface of the disc pack 1, and an eject lever 33 on which a spring 32 is stretched. It is provided.

To mount the disc pack 1 on the pack mounting base 30, the groove 14 of the disc pack 1 is engaged with the guide projection 31 of the pack mounting base 30, and the eject lever 33 is pressed against the spring 32. Meanwhile, the disc pack 1 is slid on the pack mounting base 30. When the disc pack 1 reaches the predetermined mounting position, the lock member 35 protruding from the lower surface side to the upper surface side of the pack mounting base 30 through the through hole 34 provided in the pack mounting base 30 locks the disc pack 1. Engage with the recess 15 for use. As a result, the disc pack 1 is fixed on the pack mounting base 30. At this time, the disc pack 1 is restricted from moving upward by the pressing plate 30a.

Next, a drive mechanism for driving the slider 22 provided in the disc pack 1 in order to send out the disc D from the disc pack 1 fixed on the pack mounting table 30 in this manner will be described.

As shown in FIG. 6 and FIG. 7, a predetermined one of the sliders 22 arranged on the disc pack 1 is attached to the movable chassis 66 which is lifted and lowered by a mechanism described later. A slide lever 67 for moving the opening 3 is attached. The slide lever 67 is provided with a projecting piece 68 for driving the driven piece 26 of the slider 22. As shown in FIG. 6, the slide lever 67 is moved in the direction indicated by the arrow f. Then, the protruding piece 68 drives the slider 22 from the position indicated by the solid line to the position indicated by the alternate long and short dash line. As a result, the disc D in the disc pack 1 is moved to the opening 3 side of the disc pack 1 by the slider 22 as shown by the chain line in FIG. The slide lever 67 is driven by the mechanism described below. This mechanism will be described with reference to FIG. 7. A partially toothless gear 69, which is not partially formed with teeth, is pivotally attached to the rising portion of the movable chassis 66. A roller 70 is attached to the partially-toothed gear 69, and this roller 70 is inserted into an elongated hole 71 formed in the slide lever 67. A gear 72 is rotatably supported on the rising portion of the movable chassis 66 coaxially with the driven roller 92. A shaft 74 is fixed to the tip of the arm 73 in a state of protruding from both surfaces of the arm 73, and a portion of the shaft 74 protruding from one surface of the arm 73 is provided at a rising portion of the movable chassis 66. A gear 76 is rotatably attached to the portion which is positioned inside the through hole 75 and which projects from the other surface. The gear 76 meshes with the small-diameter tooth portion 72a of the gear 72, and, although not specifically shown here, is engaged with the arm 73 via a friction member. The gear 76 and the partial tooth-chipped gear 69 mesh with each other in the range where the teeth of the partial tooth-chipped gear 69 are formed. Further, as described above, the driving force of the motor 77 arranged on the lower surface side of the movable chassis 66 is transmitted to the gear 72 via the intermediate gear group 78.

Under such a configuration, the motor 77 is started in the state shown in FIG. 7 to rotate in the normal direction, and when the gear 72 is rotationally driven in the direction shown by the arrow g, the gear 76 is urged through the friction member. The engaged arm 73 rotates in the same direction as the rotation direction of the gear 72 until a position (position shown in FIG. 8) in which the shaft 74 is in a state where movement is restricted by the through hole 75. As a result, the gear 76 meshes with the partially tooth-chipped gear 69, and the partially tooth-chipped gear 69 rotates in the direction indicated by the arrow h in FIG. 7, and thereafter, as shown in FIG. The rotation is stopped when the meshed state is released. In this way, by rotating the partially tooth-chipped gear 69, the slide lever 67 is driven by the roller 70, and the direction indicated by the arrow i in FIG. 7 (the same direction as the direction indicated by the arrow f in FIG. 6). ) To move the slider 22.

The slide lever 67 is moved to the maximum in the direction of the arrow i to move the slider 22 to a predetermined position and then slightly returned, so that the protruding piece 68 does not come into contact with the driven piece 26 of the slider 22. (State shown in FIG. 8). This is to prevent the driven piece 26 of the slider 22 from interfering with the operation when the movable chassis 66 moves up and down.

Next, the motor 77 is reversely rotated and the arm 73 is returned to the position as shown in FIG. 7 by the rotation of the gear 72 shown in FIG. 8 in the direction of arrow j. As a result, the gear 76 meshes with the partially-toothed gear 69, the partially-toothed gear 69 rotates in the direction indicated by the arrow k in FIG. 8, and thereafter, as shown in FIG. The meshed state is released. As a result, the slide lever 67 is returned to the original position.

The motor 77 remains in the operating state even after the movement of the slide lever 67 is stopped, and thereafter, only the drive roller 91 is rotationally driven by the rotation of the gear 72 as shown in FIGS. 1 and 2 described above. As described above, in this example, since the mechanism using the partial tooth-chipped gear 69 and the like is used, it is not necessary to separately provide a motor for driving the slide lever 67 and the drive roller 91. The cost will be reduced, or the size and weight will be reduced.

In this example, since the disc pack 1 is fixedly mounted on the chassis 27, in order to send out the selected disc D in the disc pack 1, the slide lever 67 corresponds to the selected disc D. In order to move the slider 22 to the position where it is arranged, the slide lever 67 is moved by raising and lowering the entire movable chassis 66.

In order to explain this point, as shown in FIG. 5, three feed screw members 81 are rotatably planted in the chassis 27. A drive belt 82 is stretched around the feed screw members 81, and the feed screw member 81 adjacent to the motor 83 is rotatably driven by the motor 83 via a transmission gear group 84. ing. Based on such a configuration, the feed screw members 81 are simultaneously driven to rotate by the motor 83.

Further, as clearly shown in FIG. 9, a pair of driven members 84 a and 84 b having a female screw portion are screwed into the feed screw member 81. A screw 85 screwed into the movable chassis 66 is engaged with the driven members 84a and 84b, so that the driven members 84a and 84b are not rotatable with respect to the movable chassis 66. There is. The movable chassis 66 is placed on the driven member 84a with the feed screw member 81 inserted into the through hole 66a provided therein. The diameter dimension of the through hole 66 a provided in the movable chassis 66 is set sufficiently larger than the diameter dimension of the feed screw member 81. Further, a spring 86 is compressed between the movable chassis 66 and the driven member 84b.

With such a configuration, even if the parallelism of the feed screw members 81 is not set with high accuracy, the movement of the movable chassis 66 is not hindered. That is, the diameter of the through hole 66a of the movable chassis 66 is made sufficiently larger than the diameter of the feed screw member 81, and the movable chassis 66 is not fixed to the driven members 84a and 84b. The members 84a and 84b are movable in a certain range relative to each other. Therefore, each driven member 84a and 84b can be independently tilted according to the tilt of each feed screw member 81, and each feed screw member 81, even if their parallelism is not set with high precision, The driven members 84a and 84b can be properly driven. In the chassis 27, two guide shafts 110 are planted so as to be juxtaposed to each other, and two bearings 111 that are guided and moved by the respective guide shafts 110 are fixed to the movable chassis 66.

When the motor 83 rotationally drives the feed screw members 81 based on such a configuration, the driven members 84 a and 84 b move along the feed screw members 81 together with the movable chassis 66, and As a result, the slide lever 67 installed on the movable chassis 66 is moved to the position of the slider 22 corresponding to the selected disk D in the disk pack 1. In this case, the position of the movable chassis 66, and hence the slide lever 67 with respect to each slider 22, is detected by an optical position detection sensor 87 fixed to the movable chassis 66, and the slide lever 67 is moved to the desired position of the slider 22. It is designed to be moved accurately. In this example, the position detection sensor 87 is configured to read the slit 89a of the position detection plate 89 installed on the chassis 27. For example, the position detection sensor is provided on the side surface of the box 2 of the disc pack 1. This may be detected by providing a marker, or, for example, the slider 22 of the disk pack 1 may be white and the side surface of the box 2 of the disk pack 1 may be black, and each slider 22 itself. May be detected directly. In such a case, more accurate position detection can be performed.

The desired slider 22 is driven by the slide lever 67, and the disc D sent from the disc housing portion 4 of the disc pack 1 is carried in the direction along the surface thereof to the disc mounting portion 28 side. 1 and 2 will be described in detail as means for carrying, and as shown in FIG. 5, a drive roller 91 and a driven roller 92 are arranged on the movable chassis 66. The drive roller 91 is driven by the motor 77 as described above, and the drive roller 91 is rotatably supported by the support plate 93 as shown in FIG. The support plate 93 also rotatably supports the guide roller 100, and is connected to the movable chassis 66 via link members 94a and 94b. The support plate 93 is urged downward by the spring 123, so that the drive roller 91 is pressed against the driven roller 92. Further, the chassis 27 is provided with two stopper members 94c that come into contact with the link members 94a and 94b when the movable chassis 66 is lowered to a predetermined position.

With this configuration, when the selected disc D is sent out from the disc pack 1 by the slider lever 67 driving the slider 22, the disc D is pushed between the drive roller 91 and the driven roller 92. In this disk D, the driving roller 91 and the driven roller 92 are formed such that the central portion thereof has a small diameter and the diameter gradually increases in the both side directions, so that the rollers 91 and 92 have only non-recording portions on both peripheral edges. Is carried out in a state of being sandwiched and is conveyed to the disk mounting portion 28 side.

Further, since the drive roller 91 is arranged so as to be located slightly upstream of the driven roller 92 with respect to the loading direction of the disc, the disc is arranged in the common tangential direction of both rollers 91, 92. Since the disc is fed, the upper face of the fed disc is conveyed while being in contact with the guided guide roller 100, so that the recording surface of the disc can be protected and the misloading of the disc to an undesired position can be reliably prevented. .

As shown in FIG. 5, the movable chassis 66 is provided with a pair of disc support portions 66 b that support and guide the lower surface of the disc D when the disc D is transported to the disc mounting portion 28 side. The disk D is transported from the lower surface of the raised flat surface portion 66 ′ of the movable chassis 66, which is located above the disk D, to a position above which the disk mounting portion 28 can be mounted. At this time, two stopper pins 95 for restricting the further movement of the disk D are provided so as to project downward. The stopper pin 95 is composed of a small diameter portion that hangs from the lower surface of the raised flat surface portion 66 ′ of the movable chassis 66 and a large diameter tip portion that follows the small diameter portion.

A clamp arm 96 is rotatably supported on the movable chassis 66 via a shaft 96 a, and a magnet type clamp for clamping the disc D to the disc mounting portion 28 is provided at one end thereof. The member 97 is supported so as to be arranged at an upper position facing the disc mounting portion 28. As clearly shown in FIG. 10, the clamp member 97 has an upper flange portion 97a and a lower flange portion 97b, the upper flange portion 97a is arranged on the upper surface side of the movable chassis 66, and the lower flange portion 97b is movable. It is arranged on the lower surface side of the chassis 66.

Then, the clamp arm 97, which is urged in the counterclockwise direction in FIG. 10 by the spring 98, lifts the upper flange portion 97a, so that the clamp member 97 is normally operated as shown in FIG. The lower flange portion 97b is in contact with the lower surface of the movable chassis 66. As a result, the clamp member 97 does not hinder the movement of the disc D conveyed to the disc mounting portion 28, and the movement of the clamp member 97 due to an external force is prevented. Then, as shown in FIG. 10, an annular rubber member 97c and a magnet 101 are attached to the lower flange 97b of the clamp member 97, and the stopper member is opposed to the other end of the clamp arm 96. 102 is planted on the chassis 27.

After the disk D is conveyed by the drive roller 91 and the driven roller 92 based on the above-mentioned structure, the disc D is guided to the disc supporting portion 66 b and is conveyed to the upper position corresponding to the disc mounting portion 28. When the movable chassis 66 is lowered, the other end of the clamp arm 96 abuts on the head of the stopper member 102 and the clamp arm 96 is rotated as shown in FIG. 11, whereby the clamp arm 96 is rotated. The arm 96 is separated from the upper flange portion 97a of the clamp member 97, and at the same time, the lower flange 97b clamps the disc D to the disc mounting portion 28. In this state, the clamp member 97 does not come into contact with either the clamp arm 96 or the movable chassis 66, and the disc D can be rotated without hindrance while being sandwiched by the disc mounting portion 28. The height of the stopper member 102 can be adjusted by using a screw or the like. By configuring the clamp arm 96 and the clamp member 97 as described above, the disc D can be reliably clamped with a relatively simple structure, and the clamp arm 96 and the clamp member 97 can be securely clamped. Since they are separated from each other, it is possible to interrupt the transmission of vibration between them.

In the disc changer mechanism as described above, the movable chassis 66 and the drive mechanism for moving the movable chassis 66 up and down, the disc transport mechanism including the drive roller 91 and the driven roller 92 attached to the movable chassis 66, The disk D is mounted on the disk mounting portion 28.

Next, in the disc changer mechanism using the example of the disc loading device according to the present invention as described above, a selected one of the plurality of discs D housed in the disc pack 1 is loaded with a disc. The unloading operation until the disk pack 1 is returned to the disk pack 1 after it is mounted on the unit 28 and information is reproduced will be described.

Each time the disc pack 1 accommodating a plurality of discs D is mounted on the pack mounting base 30, the disc setting lever 7 is rotated, and each disc is inserted into the disc pack 1 through the opening 3. The disks D are stored in the regular storage positions in the respective storage stages, and the sliders 22 are aligned in the non-operating positions for keeping the respective disks D in the regular storage positions. When the disc D to be used for information reproduction is designated, the motor 83 rotates, which causes the movable chassis 66 to move up or down, and the slide lever 67 causes a specific slider corresponding to the selected disc D. It is moved to position 22. In this state, the motor 77 is started, the slide lever 67 is slid, and the slider 22 corresponding to the selected disk D is moved from the non-actuated position by this, and the selected disk D is reached. Are sent out from the disc pack 1 through the opening 3. Then, the ejected disc D is conveyed by the drive roller 91 and the driven roller 92 in the direction along the surface thereof, and is moved to a position corresponding to the disc mounting portion 28 as shown in FIG. In this case, the non-recording surface of the disc D comes into contact with the guide roller 100, and the outer peripheral edge portion of the disc D comes into contact with the other end portion of the clamp arm 96 to regulate the upward inclination of the disc D.

When the disc D guided by the disc supporting portion 66 b and conveyed to the position corresponding to the disc mounting portion 28 reaches the position where it abuts against the large diameter portion of the stopper pin 95, this is detected by an optical sensor (not shown). It is detected, and the movable chassis 66 is lowered based on the detection result. As a result, the disc D descends toward the disc mounting portion 28 and is mounted on the disc mounting portion 28. Thereafter, the movable chassis 66 is further lowered, and the link members 94a and 94b connected to the support plate 93 come into contact with the head portion of the stopper member 94c as shown in FIG. After D is mounted, the movable chassis 66 is further lowered, so that the large diameter portion of the stopper pin 95, the driving roller 91, the driven roller 92, the guide roller 100, etc. are mounted on the disk mounting portion 28. Separated from D. At the same time, the other end of the clamp arm 96 contacts the stopper member 102 and rotates, and the clamp member 97 clamps the disc D to the disc mounting portion 28.

Then, the movable chassis 66 operates the leaf switch 103 (FIG. 5) to turn it on, whereby the rotation of the motor 83 is stopped and the lowering operation of the movable chassis 66 is stopped. Then, the information signal from the disk D can be read. In this state, the disk D is not in contact with the large diameter portion of the stopper pin 95, and the outer peripheral edge portion thereof is in a position facing the small diameter portion of the stopper pin 95. The disk D can rotate without contacting the stopper pin 95.

After that, when the reading of the information signal from the disc D by the optical pickup 29 is finished and the disc D is returned to the disc pack 1, the movable chassis 66 is raised by the rotation of the motor 83. As a result, the disc D is supported by the disc supporting portion 66b and removed from the disc mounting portion 28, and is again pinched by the driving roller 91 and the driven roller 92 to be raised. Then, when the disk D reaches the position corresponding to the original storage stage in the disk pack 1, the movable chassis 66 is stopped from rising.

When the disc D is moved to the position corresponding to the original storage stage in the disc pack 1, the motor 77 rotates in the opposite direction to the above-mentioned case, which causes the slide lever 67 to move to the original position. The disk D is conveyed to the disk pack 1 side by the drive roller 91 and the driven roller 92 while being guided by the disk support portion 66b, and moved to the position indicated by the chain double-dashed line in FIG. To be When the disk D reaches such a position, this is detected by an optical sensor (not shown), the rotation of the motor 77 is stopped based on the detection result, and the motor (not shown) is started. As a result, the disc setting lever 7 is moved, and as a result, as shown by the solid line in FIG. 6, the disc D is returned to the original storage position in the original storage stage and corresponds to this disc D. The slider 22 is returned to its original position.

[0048]

[Effect of device]

 As described above, according to the disc loading device of the present invention, there are advantages that the disc can be mounted on the disc mounting portion quickly and surely and the signal recording surface of the disc is not damaged.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of an example of a disc transfer mechanism used in an example of a disc loading device according to the present invention.

FIG. 2 is an enlarged side view of a part of the disc transport mechanism shown in FIG.

FIG. 3 is an exploded perspective view showing an example of a disc pack used in the disc loading device according to the present invention.

4 is a cross-sectional view of the disc pack shown in FIG.

FIG. 5 is an exploded perspective view showing a main part of an example of a disk changer mechanism formed by using an example of the disk loading device according to the present invention.

6 is a plan view including a partial cross section showing the relationship between the disc pack and the slide lever shown in FIG. 3 in the example of the disc changer mechanism shown in FIG.

7 is a schematic configuration diagram showing a mechanism for driving a slide lever in the example of the disc changer mechanism shown in FIG.

8 is a schematic configuration diagram showing a mechanism for driving a slide lever in the example of the disc changer mechanism shown in FIG.

9 is a partial cross-sectional view provided for explaining a feed screw member and a driven member in the example of the disc changer mechanism shown in FIG.

10 is a schematic configuration diagram for explaining a clamp arm and a clamp member in the example of the disc changer mechanism shown in FIG.

11 is a schematic configuration diagram for explaining a clamp arm and a clamp member in the example of the disc changer mechanism shown in FIG.

12 is a schematic configuration diagram provided for explaining a loading operation and an unloading operation in the example of the disc changer mechanism shown in FIG.

13 is a schematic configuration diagram provided for explaining a loading operation and an unloading operation in the example of the disc changer mechanism shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 disk pack 4 disk housing section 28 disk mounting section 66 movable chassis 66 'raised flat surface section 72, 78, 120, 121, 122 gear 77 motor 91 drive roller 92 driven roller 93 support plate 94a, 94b link member

Continued Front Page (72) Inventor Susumu Matsubara 6-735 Kitashinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation

Claims (1)

[Scope of utility model registration request] 1. In a disc loading device in which an inserted disc is nipped from the thickness direction of the disc by a disc transport roller which is rotationally driven by a motor and is transported to a disc mounting portion, the disc is loaded in the disc loading direction. Guide means for abutting the signal non-recording surface of the disc is arranged on the downstream upper side of the disc transporting roller, and the disc transporting roller is provided with the first roller on the signal recording surface side of the disc and the signal non-recording surface of the disc. Side second roller, and the first roller and the second roller are arranged slightly upstream of the first roller with respect to the disc loading direction. Disk loading device characterized by.