JP2000228045A - Recording medium insertion detection device - Google Patents

Abstract

(57) [Summary] A plurality of drive rollers arranged in the transfer direction for contacting a recording medium inserted from a recording medium insertion port and transporting the recording medium to a predetermined position, and driving means for rotationally driving the driving roller,
Support means for movably supporting the drive roller on the recording medium insertion port side with respect to other drive rollers, of the drive rollers,
Detecting means for detecting the movement of the drive roller on the side of the recording medium insertion opening accompanying the insertion of the recording medium into the recording medium insertion opening.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium insertion detecting device for detecting that a recording medium such as a disk has been inserted into a reproducing apparatus.

[0002]

2. Description of the Related Art Conventionally, in a so-called slot-in type disk reproducing apparatus, transfer of a disk is started in response to insertion of a disk from an insertion slot. In order to detect the insertion of the disk, for example, it is conceivable to provide a photocoupler or a switch in contact with the disk on the transfer path of the disk, and turn on the switch by the disk itself.

On the other hand, it is also possible to detect the insertion of a disk by detecting the displacement of the disk transfer means accompanying the insertion of the disk. The present applicant has filed Japanese Patent Application No. 10-36182.
No. 0 proposes a disk transfer device comprising a plurality of drive rollers arranged in the disk transfer direction and a guide member arranged to face the drive rollers and sandwich the disk between the drive rollers. In such a device,
The plurality of drive rollers are each supported by a support plate or the like which can be moved in parallel in a direction perpendicular to the disk insertion direction.

[0004]

When a disc is inserted, the disc is inserted between a driving roller and a guide member which are urged in a direction approaching each other, and it is detected that the distance between the discs has increased and the disc is detected. Although it is possible to detect the insertion of the disc, the insertion of the disc cannot be detected unless the plurality of drive rollers and the entire guide member are moved, so that a light operation feeling cannot be obtained.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a plurality of recording media arranged in the transport direction in order to contact a recording medium inserted from a recording medium insertion slot and transport the recording medium to a predetermined position. Drive roller, driving means for driving the drive roller to rotate, support means for movably supporting the drive roller on the recording medium insertion port side of the drive roller with respect to other drive rollers, and recording medium for the recording medium A detecting means for detecting the movement of the drive roller on the side of the recording medium insertion opening accompanying the insertion into the insertion opening.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of a main part of a changer type disk reproducing apparatus 1 capable of storing six disks, showing a standby state in which the disks can be loaded. On the back side of the apparatus, an arc-shaped disc holder 1 made of aluminum is provided to hold the periphery of the 12 cm disc.
1 to 16 are stacked and arranged. Four round holes 17 are formed in the disk holder 16, a resin is fixed to the periphery of the round holes 17 by an outsert method, and an engagement pin 18 protrudes from a part of the resin. This engagement pin 18
The disk holder 16 is fitted in a cam groove 33 formed in a cam member 30 described later for moving the disk holder 16 in a direction perpendicular to the plane of FIG.

The other disk holders 11 to 15 have the same structure as the disk holder 11, and have round holes 17 and engaging pins 18 formed in the same manner.

In order to directly abut the disk and clamp the disk, the disk is formed integrally with a resin provided on the periphery of the round hole 17 at the end of the bow-shaped disk holder 11 and has a U-shaped cross section. Two holding portions 19 are provided along the bow shape. Accordingly, since the range for holding the disk is only the peripheral portion of the disk, even if the disk is damaged due to friction with the disk holders 11 to 16, the influence on the information recorded on the disk is minimized. It is configured. FIG. 1 shows only the sixth disk holder 16 located at the uppermost position among the disk holders 11 to 16.

[0010] Even when thermal expansion occurs,
Since each of the four round holes 17 is connected via aluminum, a change in the distance between each other is kept to a minimum. In addition, since the longitudinal direction of the disk holding portion 19 is the direction of the disk peripheral edge, even if thermal expansion occurs, the disk holding portion 19 expands along the disk holder 11 having an arc shape, so that the distance between the round holes 17 is less likely to be deformed. .

11 to 13 are side views of the cam member 30, FIG. 11 shows a state where the first disk is selected, FIG. 12 shows a state where the fourth disk is selected, and FIG. 13 shows a state where the sixth disk is selected. . One cam groove 33 into which the engaging pin 18 is inserted is formed on the surface of the cylindrical cam member 30.
A spur gear 34 is attached to the cam member 30, and a motor,
The rotation direction and the rotation position of the cam member 30 are controlled by meshing with a required cam member drive mechanism 82 including a reduction gear mechanism and the like. The four cam members 30 are rotationally driven in the same direction and at the same rotation angle by connecting the respective spur gears 34 to each other.

In FIG. 1, a front panel 2 of an apparatus 1 is shown.
A disk drive mechanism comprising a plurality of drive rollers and the like on the left side in FIG. 1 as disk transfer means for transferring a disk inserted from an opening (not shown) formed in the disk drive to a reproduction position or disk holders 11 to 16 Guide members 50 for holding the disk between the disk drive mechanism 40 and the disk drive mechanism 40 are disposed on the right side and the right side, respectively. The disk drive mechanism 40 has a V-shaped groove formed on its peripheral surface to hold the peripheral edge of the disk, and includes four drive rollers 41 to 44 arranged along the direction of transport of the disk. Each of the drive rollers 41 to 44 is provided with a connecting gear 45 to 47.
The connection gear 45 is connected to a required roller driving mechanism 84 composed of a motor or the like for rotating the driving rollers 41 to 44.

On the other hand, the guide member 50 has a U-shaped cross section so as to sandwich the peripheral portion of the disk. The disk drive mechanism 40 and the guide member 50 can be moved in parallel in the directions indicated by arrows DE in FIG. 1 by a connecting mechanism described later with reference to FIGS. When the disk drive mechanism 40 has moved a required distance, the disk drive mechanism 40 is connected to move by the same distance in the direction of arrow D opposite thereto.

As shown in FIG. 1, the four drive rollers 41 to 44 are arranged at a certain distance from each other in the disk transport direction. Therefore, during the transfer of the disk, when the center of the disk is located on a straight line connecting the respective rotation centers of the drive rollers 41 to 44 and the guide wall 53 at the shortest distance, the disk drive mechanism 40 and the guide member 50 When the separation distance is maximum, and the center of the disk is located on a straight line connecting the intermediate point of each of the drive rollers 41 to 44 and the guide wall 53 at the shortest distance,
The distance between the disk drive mechanism 40 and the guide member 50 is minimized. Accordingly, while the disk is being transported, the distance between the disk drive mechanism 40 and the guide member 50 constantly changes, but the displacement is such that the disk transport is not affected.

When the disk is brought to the reproducing position, the projections 54, 5 are located at equal intervals from the position of the guide means 50 which should be the point of contact with the disk.
5 (see FIGS. 14 and 16). Further, at this reproduction position, the drive rollers 43 and 44 are similarly arranged at equally spaced positions. Therefore, the disc at the reproduction position is not covered with the protrusions 54 and 55, the drive rollers 43 and 44.
Supported stably.

An actuator of a detection switch 56 for detecting that the disk has been brought to the reproduction position is projected from the tip of the projection 54. The drive rollers 41, 42 disposed on the front panel 2 side correspond to the drive rollers 43, 44 disposed on the disk holders 11 to 16 in response to the fluctuation of the disk transfer path due to the protrusions 54, 55. Guide member 5 slightly
It is offset so as to be close to the zero side.

The driving roller 41 disposed closest to the front panel is rotatably supported by a rotating shaft of the connecting gear 45 and is supported on a supporting plate 48 urged in a counterclockwise direction. It is movable between a solid line and a broken line in FIG. When the disk is inserted between the drive roller 41 and the guide member 50, the support plate 48 rotates clockwise, so that the drive roller 41 moves from the position indicated by the solid line to the position indicated by the broken line. In order to detect the rotation of the support plate 48, a detection switch 4
9 are arranged.

FIG. 14 shows the state in the standby state shown in FIG.
FIG. 15 is a plan view showing a link mechanism for making the above-described disk drive mechanism 40 and guide member 50 movable in the direction D-E in FIG. 1, and FIG. 15 is a front view thereof. 16 and 17 are a plan view and a front view showing the state of the disk drive mechanism 40 and the guide member 50 in the reproducing state.

Drive rollers 41-44, connecting gears 45-4
Numerals 7 are respectively supported by L-shaped first slide plates 111. Guide pins 112 to 114 are provided on the slide plate 111, and the guide pins 112 are guided in the guide grooves 115 formed in the main chassis 4, and the guide pins 113 and 114 are guided in the guide grooves 116 to move in parallel. It is possible. Further, a rack 117 is formed on the slide plate 111,
It meshes with the pinion gear 118.

On the other hand, the L-shaped second slide plate 121 supporting the guide member 50 has a guide pin 122,
123 is provided and guided by guide grooves 125 and 126 formed in the main chassis 4, respectively. An elongated hole 129 is formed in the slide plate 121, and a pin 132 provided on a plate 131 on which a rack 127 is formed is inserted. Since the spring 133 is stretched between the pin 132 and the slide plate 121, the play between the slide plates 111 and 121 can be absorbed.

The guide pins 124 and 132 provided on the plate 131 are also guided by guide grooves (not shown). As a result, the slide plates 111 and 121 and the plate 131 are both D-E in FIG.
It is possible to translate in the direction.

The rack 127 formed on the plate 131
Meshes with the pinion gear 128, and this pinion gear 1
28 meshes with the pinion gear 118. A slide plate driving mechanism 85 including a motor, a reduction gear, and the like meshes with the pinion gear 118. Therefore, when the pinion gear 118 is driven to rotate clockwise by the slide plate drive mechanism 85, the disk drive mechanism 40 supported by the slide plate 111 is translated in the direction of arrow D. On the other hand, when the pinion gear 128 meshing with the pinion gear 118 rotates counterclockwise, the guide member 50 supported by the slide plate 121 moves in the direction indicated by the arrow E.
Is translated.

By detecting the position of the slide plate 121, the diameter of the loaded disk can be determined. Therefore, the detection switches 135 to 138 are arranged on the main chassis 4 as shown in FIG. In order to press the actuators of the detection switches 135 to 138, the protrusions 13 are formed on the slide plate 121.
4 are arranged. FIG. 18 is shown corresponding to the standby position shown in FIGS.

The detection switch 135 detects the state where the slide plate 121 is located at the standby position where the disk can be loaded as shown in FIG. The detection switch 136 is an 8 cm disk for the disk drive mechanism 4.
0 and the position of the slide plate 121 when the slide plate 121 is completely clamped by the guide member 50, and the detection switch 137 is 12c.
m disk drive mechanism 40 and guide member 5
The detection switch 138 detects the position of the slide plate 121 when the disk drive mechanism 40 and the guide member 50 are separated from the disk 101 as shown in FIG.

As shown in FIG. 8, which is a front view corresponding to FIG. 1, a spindle motor 62 for rotating a turntable 61 on which a disk is mounted is disposed on a mechanical chassis 63. In order to clamp the disc between the turntable 61 and the clamp, a clamper 71
It is supported rotatably. This clamp arm 72
Is rotatably supported by the mechanical chassis 63 by a shaft 73 so that the clamper 71 can be moved toward or away from the turntable 61.

Since the bent portion 74 is formed in the clamp arm 72 as shown in FIG. 8, when the guide member 50 is moved to a position separated from the disk for reproducing the disk as shown in FIG. A sufficient separation distance can be obtained between the guide member 50 and the clamper arm 72.

On the mechanical chassis 63, there is arranged an optical pickup 66 which can be moved in the radial direction of the disk with the rotation of a feed screw 65 driven to rotate by a required motor (not shown). Reproduction of information recorded on the disk is achieved by irradiating the disk with laser light emitted from the optical pickup 66 while rotating the disk by the spindle motor 62, and reading the reflected light, and at least the turn is achieved. The table 61 and the optical pickup 66 constitute a reproducing unit.

The optical pickup 6 is mounted on the mechanical chassis 63.
A guide rail 67 is provided to move the optical pickup 66 in parallel in the direction of arrows D-E in FIG. Here, the mechanical chassis 63
Is driven by a mechanical drive mechanism 86 including a motor and the like.
1 along a guide groove 92 provided in the base chassis 3.
Can be moved in parallel in the direction of arrow FG, and can be moved in the direction perpendicular to the recording surface of the disk for the clamping operation. Also, when the mechanical chassis 63 moves in the direction approaching the recording surface of the disk during this clamping operation, a coupling mechanism (not shown)
The disk is also rotated around the shaft 73 so as to approach the turntable 61, so that the disk is rotationally driven in the same plane as the transport plane transported by the disk drive mechanism 40.

The base chassis 3 is elastically supported by the damper 91 with respect to the main chassis 4. Also,
The disk drive mechanism 40 and the guide member 50 are movably supported by the main chassis 4, and the rotation shaft 32 of the cam member 30 that supports the disk holders 11 to 16 to be vertically movable is rotatably supported. I have. That is, the disk holders 11 to 16 and the disk drive mechanism 40
The disk transfer means including the guide member 50 is supported by the apparatus 1 without passing through the damper 91.

The main chassis 4 has a disk holder 11
A disc lock mechanism 140 inserted into the center hole of the disc is provided so that the discs stored in the discs 16 to 16 do not protrude in the direction of arrow G in FIG. 1, and are a side view and a front view in an unlocked state. 19 and FIG. 20, FIG. 21 and FIG. 22 which are sectional views taken along line HH and JJ in FIG. 20, FIG. 23 which is a side view in a locked state, and perspective views in an unlocked state and a locked state. This will be described below with reference to FIGS. 24 and 25.

The upper lock bracket 141 disposed on the upper side with respect to the disk transfer plane includes a mounting portion 142 for mounting on a chassis (not shown) and a disk lock portion 143. A concave portion 144 is formed in the disk lock portion 143, and can receive a lock arm described later.

The lower lock bracket 151 disposed on the lower side with respect to the disk transfer plane has a substantially cylindrical shape.
The disk lock nut 153 has an arrow B-
It is arranged movably in the C direction. A cylindrical hole 154 is formed at the center of the disc lock nut 153,
A spiral ridge (not shown) is formed on the surface of the hole 154. A camshaft 156 having a spiral groove 155 formed on the surface thereof is provided so as to move the disk lock nut 153 up and down by engaging with the ridge. A spur gear 157 is provided at a lower portion of the camshaft 156, and a part of a mounting portion 152 of the lower lock bracket 151 is cut out to thereby form the spur gear 157.
7 is exposed to the outside.

A disk lock arm 159 that is rotatably supported by a shaft 158 at an upper portion of the lower lock bracket 151 is connected to a disk lock nut 153 by a pin 160. This shaft 158 is shown in FIG.
0, that is, the direction parallel to the transport plane of the disk 101 and perpendicular to the transport direction of the disk 101 in the apparatus 1.

Accordingly, when the spur gear 157 is driven to rotate clockwise by the lock arm driving mechanism 87 including a motor, a reduction gear, and the like, the concave groove 155 formed on the cam shaft 156 and the convex ridge of the disk lock nut 153 are formed. , The disk lock nut 153 moves in the direction of arrow B. With this movement, the disk lock arm 1
Reference numeral 59 designates 9 in the counterclockwise direction about the axis 158 in FIG.
It turns by 0 degrees, and closes a gap that is a disk transfer plane formed between the upper lock bracket 141 and the lower lock bracket 151.

The upper lock bracket 141 is inserted into the center hole of the disk located above the disk aligned with the disk transfer plane, and the lower lock bracket 151 is inserted into the center hole of the disk located below. This prevents the disks stored in the disk holders 11 to 16 from falling off.

FIG. 26 is a circuit diagram of a main part of the device 1. A laser beam is emitted by the optical pickup 66 to the disk 101 rotated at a predetermined rotation speed by the spindle motor 62, and a reproduction signal obtained based on the reflected light is amplified by the RF amplifier 161, and then is processed by the signal processing circuit 162. Is input to The reproduced signal is output from the signal processing circuit 162.
After performing necessary signal processing such as demodulation and error correction, the signal is converted into an analog signal by a D / A converter 163 and output from an output terminal 164.

The reproduction signal is input to the servo circuit 165, so that focus servo and tracking servo are performed on the optical pickup 66, and the rotation of the spindle motor 62 is controlled to a required number of revolutions.

A microcomputer 166 for controlling the operation of the apparatus 1 controls the signal processing circuit 162 and the servo circuit 165, and also controls the cam member driving mechanism 82, roller driving mechanism 84, slide plate driving mechanism 85, mechanical chassis driving mechanism 86, Each operation of the lock arm drive mechanism 87 is controlled.

The operation when the disk 101 having a diameter of 12 cm is inserted into the apparatus 1 in the above configuration will be described with reference to the flowcharts of FIGS. 27 and 28. As shown in FIGS. 1, 8, and 14, in a loading standby state in which a disc can be inserted, the first driving roller 41 and the guide member 5 disposed closest to the front panel 2 side.
The distance to the zero guide wall 53 is set so as to be slightly smaller than the diameter of a disc having a diameter of 8 cm. Also,
In this standby state, the disk holder 11 is aligned with the disk transfer plane as shown in FIG.

When the disk loading operation is performed by the required operation, the driving rollers 41 to 44 are respectively driven to rotate counterclockwise by the roller driving mechanism 84 before the disk loading based on the required operation (S1). ).

When the disk 101 is inserted through an opening (not shown) formed in the front panel 2 in a state where the drive rollers 41 to 44 are driven to rotate, as shown in FIG. The support plate 48 that supports 41 rotates clockwise against the urging force. When the detection switch 49 is turned on by this rotation (S2), the slide plate driving mechanism 85 rotates the pinion gear 118 clockwise based on a command from the microcomputer 166 (S3). Thereby, the slide plate 11
1 moves in the direction of arrow D, and with the rotation of the pinion gear 128 meshing with the pinion gear 118 in the counterclockwise direction, the slide plate 121 moves in the direction of arrow E in parallel.

Since the detection switch 49 for detecting the insertion of the disk 101 detects the displacement of the drive roller 41, the operator deviates the disk to the right and does not contact the drive roller 41. When the slide plate drive mechanism 85 is inserted into the apparatus 1, the slide plate drive mechanism 85 does not operate. In order to solve this, a detection switch for detecting the contact of the disk 101 may be provided on the guide member 50 side, and the control by the slide plate driving mechanism 85 may be performed by two switches.

When the slide plates 111 and 121 move in the direction away from each other, the support plate 48 supporting the drive roller 41 rotates counterclockwise, and the detection switch 49 is turned off (S4). In response to this off, the slide plate drive mechanism 85 rotates the pinion gear 118 counterclockwise (S
5) The movement of the slide plates 111 and 121 is controlled so as to be close to the disk 101.

According to this control, the disk drive mechanism 40 and the guide member 50 are controlled to move away from each other by the driving force of the slide plate drive mechanism 85 when the disk 101 is inserted into the apparatus 1. Therefore, the disk drive mechanism 40 is driven by the insertion force of the disk by the operator.
The disk drive mechanism 40 does not push and spread the guide member 50 but interlocks with the insertion of the disk into the apparatus 1.
In addition, since the gap between the guide members 50 is controlled to be wide, disc loading can be performed with a small insertion force.

When the disc 101 is further inserted, FIG.
The detection switch 136 is turned on by the projection 134 shown in FIG. 8, but this is a temporary operation that occurs during the process until the disk 101 is completely clamped by the disk drive mechanism 40 and the guide member 50. The period during which it is turned on is short. Thereafter, the disk 101 is completely inserted between the disk drive mechanism 40 and the guide member 50, and the detection switch 137 is turned on (S
7). In response to this ON, the microcomputer 166 recognizes that the inserted disk 101 is a 12 cm disk (S8).

Further, by rotating the pinion gear 118 counterclockwise by the slide plate driving mechanism 85 (S9), the disc 1 is loaded during disc loading.
01 is stably held between the disk drive mechanism 40 and the guide member 50 with a predetermined holding force.
Are loaded in the direction of arrow F.

As shown in FIG. 8, the disk drive mechanism 40 and the guide member 50 are movably supported by the main chassis 4. Therefore, when the disc 101 is inserted, the operator can obtain a rigid insertion feeling without being affected by the damper 91.

The rotation of the drive rollers 41 to 44 moves the disk 101 in the direction of the arrow F which is the direction of the reproduction position, and the actuator of the detection switch 56
The detection switch 56 is turned on by being pressed by the peripheral edge of the No. 1 (S10). Then, after a predetermined time (S11), the drive rollers 41 to 41 by the roller drive mechanism 84 are driven.
By stopping the drive of 44 (S12), the disk 101 is brought to the reproduction position shown in FIG. 3 and its front view shown in FIG. At this playback position, the disc 10
1 is in a non-contact state with the disk holders 11 aligned at the same height.

Subsequently, the mechanical driving mechanism 86 moves the mechanical chassis 63 in the direction approaching the disk 101 and the clamper 71 moves so as to approach the disk 101, so that the disk is moved between the turntable 61 and the clamper 71. Clamp 101.

Thereafter, the disk drive mechanism 40 and the guide member 50 are moved by the slide plate drive mechanism 85 in the directions of arrows D and E, respectively, until the detection switch 138 is turned on, thereby separating them from the disk 101. Thereafter, the disk 101 is driven to rotate at a required number of revolutions. This reproducing state is shown in FIG. 4 and FIG. 10 which is a front view thereof. Note that this reproduction position is at the same height as the transfer plane of the disk 101.

As shown in FIG. 10, the clamp arm 72 is supported by a mechanical chassis 63 supported on a damper 91. On the other hand, the guide member 50 is supported on the mechanical chassis 4. Therefore, in the reproducing state shown in FIG. 9, the clamp arm 72 moves due to the vibration, but the bent portion 74 formed on the clamp arm 72 provides a sufficient distance from the guide member 50. Therefore, the clamp arm 7 ahead of the bent portion 74
2 can be brought close to the disk 101, which can contribute to downsizing of the apparatus in the height direction.

After the reproduction of the disc 101 is completed,
The operation of storing the disc 01 in the disc holder 11 and storing a different disc in the fourth disc holder 14 will be described below. After the reproduction of the disc 101 is completed, the disc 101 is moved between the drive rollers 43 and 44 and the guide member 50 by moving the disc drive mechanism 40 and the guide member 50 in the directions of arrows E and D by the slide plate drive mechanism 85, respectively. After that, the mechanical chassis driving mechanism 86 moves the mechanical chassis 63 and the clamper 71 in a direction away from the disk 101, and releases the clamped state of the disk 101.

Subsequently, the drive rollers 41 to 44 are rotated counterclockwise by the roller drive mechanism 84 to
01 in the direction of arrow F,
01 is inserted into the disc holder 11. This state is shown in FIG.
Shown in

Thereafter, the disk drive mechanism 40 and the guide member 50 are moved by the slide plate drive mechanism 85 in a direction away from each other until the detection switch 138 in FIG. 18 is turned on.
As shown in FIG. 7, the slide plate 1 is moved to a position where the drive roller 44 and the guide member 50 are separated from the disk 101.
11 and 121 are moved.

After the disk 101 is stored in the disk holder 11, the spur gear 15 is
The disk lock nut 153 engaged with the camshaft 156 moves in the direction of the arrow B by rotating the 7 clockwise. Along with this, the disk lock arm 159 is rotated 90 degrees counterclockwise in FIGS. 19 and 24 around the shaft 158, and the distal end thereof engages with the concave portion 144 formed in the upper lock bracket 141. Close the disk transfer plane. As a result, the disc lock arm 159 is inserted into the center hole of the disc 101, so that the disc holder 11
Is prevented from jumping out. This state is shown in FIG. 23 and FIG.

The rotation direction of the disk lock arm 159 is a direction for moving the disk 101 in the direction of the disk holder 11. Therefore, when the disk drive mechanism 40 does not sufficiently transfer the disk 101 to the disk holder 11, the disk lock arm 159
Presses the periphery of the center hole of the disc 101 to
By moving the disk 01, the disk 101 can be reliably stored in the disk holder 11.

Further, the mechanical chassis 63 is moved in parallel in the direction of arrow G along the guide groove 92 by the mechanical chassis driving mechanism 86, and the mechanical chassis 63 is retracted without overlapping the disk 101 held by the disk holder 11, as shown in FIG. Bring to position.

Subsequently, in order to select the disk holder 14, the cam member 30 shown in FIG.
The cam member 30 is rotated to the height at which the disk holder 14 is aligned with the disk moving plane as shown in FIG.

Thereafter, the slide plates 111 and 121 are moved by the slide plate drive mechanism 85 to a position where the detection switch 135 is turned on as shown in FIG. 18, and the disk drive mechanism 40 and the guide member 50 are moved as shown in FIG. Is moved to the standby position where the can be inserted.

When loading an 8 cm disk, the drive roller 41 is rotated clockwise with the insertion of the 8 cm disk at the loading standby position shown in FIGS. 1, 14 and 15 in the same manner as described above. The movement of the slide plates 111 and 121 is controlled by the plate driving mechanism 85 as shown in FIGS. 27 to 28 (S1 to S5). Thereafter, the detection switch 136 is kept on for a predetermined time while the 8-cm disk is completely held between the disk drive mechanism 40 and the guide member 50 (S6).

It is assumed that the insertion of the 8 cm disc is detected by keeping the detection switch 136 on (S1).
3) After the detection, the slide plate 11 is moved by the slide plate drive mechanism 85 in the direction of holding the 8 cm disc.
1 and 121 are urged (S9), like the 12 cm disc, after the detection switch 56 is turned on (S10), and after a lapse of a predetermined time (S11), the drive rollers 41-44 are used.
The loading of the cm disc is stopped (S12).

In this embodiment, the disk holder 11
~ 16 cannot store 8cm disc, so 8cm
8cm when loading of disc is detected
Transfer from the playback position of the disk to the disk storage position is prohibited.

In the above-described embodiment, a plurality of drive rollers 41 to 44 are arranged as a disk transfer mechanism in the disk transfer direction, and are disposed opposite to the drive rollers 41 to 44. However, it is also possible to provide a pair of drive rollers 41 to 44 and to transport the disk while nipping the disk by these drive rollers.

In the above-described embodiment, the recording medium to be transferred is a disk. However, it is needless to say that the present invention can be applied to a cartridge-type recording medium transfer device in which a disk is accommodated in a shell.

[0065]

As described above, according to the apparatus of the present invention, the recording medium can be inserted into the apparatus with a small insertion force, and a light operation feeling can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view of a main part of a disc reproducing apparatus 1 in a state where a disc can be loaded.

FIG. 2 is an essential part plan view of the disc reproducing apparatus 1 in a state where a disc is inserted.

FIG. 3 is an essential part plan view of the disc reproducing apparatus 1 in a state where the disc is brought to a reproducing position.

FIG. 4 shows a disc reproducing apparatus 1 in a disc reproducing state.
FIG.

FIG. 5 is a plan view of a main part of the disc reproducing apparatus 1 in a state where the disc is brought to a storage position.

6 is a plan view of a main part of the disc reproducing apparatus 1 in a state where the disc drive mechanism 40 and the guide member 50 are separated from the state shown in FIG. 5;

FIG. 7 is a waist plan view of the disc reproducing apparatus 1 in a disc selectable state.

FIG. 8 is a front view corresponding to FIG. 1;

FIG. 9 is a front view corresponding to FIG. 3;

FIG. 10 is a front view corresponding to FIG. 4;

FIG. 11 is a side view of the cam member 30 in a state where the disk holder 11 is selected.

FIG. 12 is a side view of the cam member 30 in a state where the disk holder 14 is selected.

FIG. 13 is a side view of the cam member 30 in a state where the disk holder 16 is selected.

FIG. 14 is an essential part plan view for explaining the configuration of slide plates 111 and 121;

FIG. 15 is a front view corresponding to FIG. 14;

FIG. 16 is an essential part plan view for explaining the configuration of slide plates 111 and 121;

FIG. 17 is a front view corresponding to FIG. 16;

FIG. 18 is a plan view showing a detection switch for detecting the position of the slide plate 121.

FIG. 19 is a side view of the disk lock mechanism 140 in an unlocked state.

FIG. 20 is a front view corresponding to FIG. 19;

FIG. 21 is a sectional view taken along line HH in FIG. 19;

FIG. 22 is a sectional view taken along the line JJ in FIG. 19;

FIG. 23 shows a disk lock mechanism 14 in a locked state.
0 is a side view.

FIG. 24 is a perspective view of the disk lock mechanism 140 in an unlocked state.

FIG. 25 shows a disk lock mechanism 14 in a locked state.
0 is a perspective view.

FIG. 26 is a main part circuit diagram of the device 1;

FIG. 27 is a flowchart for explaining disc loading.

FIG. 28 is a flowchart illustrating disc loading.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disc reproducing apparatus 3 Base chassis 4 Main chassis 11-16 Disk holder 30 Cam member 33 Cam groove 40 Disk drive mechanism 41-44 Drive roller 45-47 Connection gear 50 Guide member 56 Detection switch 61 Turntable 63 Mechanical chassis 66 Optical pickup 71 Clamper 72 clamp arm 82 cam member drive mechanism 84 roller drive mechanism 85 slide plate drive mechanism 86 mechanical chassis drive mechanism 87 lock arm drive mechanism 91 damper 101 disk 111 slide plate 121 slide plate 135 detection switch 136 detection switch 137 detection switch 138 detection switch 140 Disk lock mechanism 141 Upper lock bracket 151 Lower lock bracket 159 Disk lock arm 66 microcomputer

Claims (2)

[Claims] A plurality of drive rollers arranged in the transport direction for contacting a recording medium inserted from a recording medium insertion slot and transporting the recording medium to a predetermined position;
A driving unit (84) for rotating and driving the driving rollers (41 to 44); and a driving roller (41) on the recording medium insertion opening side among the driving rollers (41 to 44). 42 ~
Support means (48) for movably supporting relative to (44)
And a detecting means (49) for detecting the movement of the drive roller (41) on the side of the recording medium insertion port accompanying the insertion of the recording medium (101) into the recording medium insertion port. Insertion detection device. 2. The recording medium (101) disposed opposite to the plurality of drive rollers (41-44) so as to sandwich the periphery of the recording medium (101) together with the plurality of drive rollers (41-44). Guide member (5) extending in the
2. The recording medium insertion detecting device according to claim 1, further comprising: (0).