JP2529857Y2 - Disc player - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc player for reproducing information recorded on a disc such as a compact disc.

[0002]

2. Description of the Related Art Compact discs (hereinafter referred to as CDs)
Of the disc players for playing back discs, especially those mounted on cars, the CD inserted into the insertion slot is automatically sucked into the chuck table so that the disc loading operation can be completed in a short time from the viewpoint of safety. It is configured to be set.

As shown in FIG. 12, this type of disc player 10 detects that the leading end 1a of the CD 1 has been inserted into the insertion slot 11 with a sensor (not shown) or the like, and rotates the suction roller 12. .

[0006] The CD 1 is sucked up to a position where the tip 1 a (or the outer periphery on the tip side) contacts the stopper 13.

Since the stopper 13 is provided in advance at a distance equal to the radius R of the CD 1 from the center of the chuck table 15 which is rotated and driven by the motor 14, when the tip 1 a of the CD 1 comes into contact with the stopper 13. , CD
The center of one chuck hole 2 coincides with the center of the chuck table 15 therebelow.

The CD 1 is located at a concentric position on the chuck table 15.
Is sucked, the chuck retainer 16 is lowered from above, the CD 1 is sandwiched between the chuck table 15 and the chuck retainer 16, and the loading (chucking) of the CD 1 is completed.

When the chuck presser 16 moves down, the roller 12 also moves down to a position where it does not contact the CD 1.

By the way, a CD has a diameter of 12 cm and a diameter of 8 cm.
cm. In order to support these two types of CDs, the chuck hole 2 is required regardless of the size of the CD.
Must be positioned on the chuck table 15.

For this reason, a disk player corresponding to a CD having a different diameter is provided with a mechanism for moving the suction stop position of the CD 1 in accordance with the diameter of the inserted CD 1.

In this mechanism, the stopper itself is moved back and forth according to the diameter of the CD, the stoppers for 12 cm and 8 cm are provided, the stopper for 12 cm is fixed, and the CD of 12 cm is inserted. 8cm when done
There has been a method of retracting a stopper for use.

FIG. 13 shows the principle of the mechanism based on the former method. In this mechanism, a stopper 21 is fixed to a stopper substrate 20, and two lock levers 22 and 23 are rotatably mounted on both sides of the stopper 21. Pins 24, 2
5, and the lock levers 22 and 23 are constantly urged in a direction in which the pins approach each other. Pins 24, 25
When both are pressed in the direction opposite to the biasing direction, the stopper substrate 20 is formed so as to be freely movable from a stop position for 8 cm to a stop position for 12 cm.
Note that a tumbler spring 26 is attached to the stopper substrate 20.

Therefore, the large diameter 12c indicated by the dotted line
When the CD of m is sucked in and its outer peripheral portion comes in contact with the two pins 24 and 25 before the stopper 21, the stopper substrate 20 is pushed rearward and moves, and the tumbler spring 26 moves for 12 cm. Move to the stop position and stop. 1
The 2 cm CD is formed on the stopper 21 of the stopper substrate 20.
It is sucked to the position where it comes into contact with and is chucked.

When a small-diameter CD of 8 cm is sucked, the outer peripheral portion of the CD comes into contact with the stopper 21 first, and the pins 24 and 25 are not pushed at the same time, so that the stopper substrate 20 does not move. , CD are chucked in this state.

When a CD of 12 cm is inserted, the stopper substrate 21 stopped at the stop position for 12 cm returns to the front in conjunction with the operation of ejecting the CD.

FIG. 14 shows the principle of the mechanism based on the latter method. In this mechanism, the inwardly biased 2
Two levers 28 and 29 are mounted on the insertion port side.

Pins 30 and 31 project from one ends of the two levers 28 and 29, respectively. The distance between the two pins 30, 31 is set slightly smaller than 8 cm, and the two levers 28, 29 are formed so as to be able to rotate in that direction when simultaneously receiving an outward force. .

One end of a slide lever 32 slidable in the suction direction in conjunction with the rotation of the lever 29 is connected to one lever 29. The other end of the slide lever 32 has stopper pins 33, 33 for 8 cm.
Is connected to the gear 34a of the stopper shaft 34 having
When the slide lever 32 moves in the suction direction, the stopper shaft 34 rotates and the stopper pin 3 facing downward is
3 and 33 are retracted in the horizontal direction.

Behind the stopper shaft 34, 12 cm
Stopper pins 35, 35 are protruded, and one of the pins 3
Behind 5, the other end of the slide lever 32 is sucked,
A plunger 36 for holding the 8 cm stopper pins 33, 33 in a horizontal state is provided.

Therefore, the large diameter 12c shown by the dotted line
m CD is inserted and sucked, a pin 3
The levers 0 and 31 come into contact with each other, and the levers 28 and 29 both pivot largely outward. For this reason, the slide lever 32 moves backward, and the stopper shaft 34 rotates to move the stopper pin 33,
33 is in a horizontal state. At this time, power is supplied to the plunger 36, and the slide lever 32 is held in a state of being moved rearward. The CD uses the retracted stopper pin 3
3 and 33, pass under the stopper pin 12 for 12cm
It is sucked to the position where it comes into contact with 5, 35 and chucked.

When a small-diameter CD of 8 cm is inserted, the outer periphery of the CD contacts the two pins 30 and 31, and the levers 28 and 29 rotate slightly outward. At this time, the stroke of the slide lever 32 is small, and the plunger 36
Is not adsorbed. The CD is sucked while being guided to the center between the pins 30 and 31, and the stopper pin 33 for 8 cm is used.
It is chucked in a state of contact with 33.

When a CD of 12 cm is inserted, the center of the CD released from chucking is positioned on the pins 30, 3 of the levers 28, 29 held open.
When the distance exceeds 1, the power supply to the plunger 36 is cut off, and the slide lever 32 returns forward, and the levers 28, 2
9 rotates inward and returns to the original state.

[0022]

[Problems to be solved by the invention] However, FIG.
In the mechanism shown in (1), since the entire mechanism is intensively arranged on the inner surface side, it is inconvenient in terms of operation inspection, parts replacement, and the like.

In the mechanism shown in FIG. 14, since the plunger is used to hold the stopper for 8 cm in the retracted state, the cost is increased and the CD of 12 cm is increased.
While the device is chucked, there is an inconvenience that the power supply to the plunger 36 must be constantly performed even if the power supply to the main body is stopped.

In the mechanism of the former system, the final movement and fixing of the stopper to the suction stop position for 12 cm, and the activation of the return to the suction stop position for 8 cm are performed in one cycle.
Since the CD is indirectly connected to the actual insertion state of the 2 cm CD, if a failure occurs in the connection mechanism or the like, the CD may be seriously damaged.

This is because the stopper pins 33, 33 of 8 cm
The same applies to the latter type of mechanism in which the retraction state is maintained and released by energizing the plunger 36.

For this reason, there has been a strong demand for a disk player which can easily move and fix the suction stop position and release the suction stop position, which is easy to inspect and replace, and which is cheap and reliable.

An object of the present invention is to provide a disk player which solves this problem.

[0028]

In order to solve the above-mentioned problems, a disk player according to the present invention contacts an outer periphery of an approaching small-diameter disk on an entrance side to prevent the small-diameter disk from entering.
The small diameter stopper which stops at the position where the center of the disk coincides with the predetermined position, and the outer periphery of the approaching side of the large diameter disk to be brought into contact with the stopper, so that the entrance of the large diameter disk matches the predetermined position. A large diameter stopper to be stopped at a position where the large diameter disc is inserted, and the respective abutting portions are projected into the insertion opening at intervals shorter than the diameter of the large diameter disc, and the outer periphery of the large diameter disc inserted from the insertion opening is A pair of guide levers that rotate so as to be pushed open by the entry of the disc when the contact portions come into contact with each other;
A stopper retreat lever connected to at least one of the guide levers, for retracting the small-diameter stopper from the approach path of the disc when the guide lever is rotated by entry of the large-diameter disc, and The contact portion protrudes at a position where it comes into contact with the outer periphery of the large-diameter disc to be rotated,
The movement in the return direction of the stopper retreat lever or the guide lever in a state where the small-diameter stopper is retracted,
And a lock lever for holding the stopped state.

[0029]

With this configuration, when the large-diameter disc is inserted through the insertion slot, the contact portions of the pair of guide levers contact the outer periphery of the disc together with the disc player of the present invention. The pair of guide levers rotate so as to be pushed open, and the small-diameter stopper is retracted from the disk entrance path by the stopper retreat lever. When the large-diameter disk further enters, the contact portion of the lock lever comes into contact with the outer periphery of the disk and rotates, and the stopper retreat lever or the guide lever is kept stopped in the return direction.

[0030]

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

FIG. 1 is a plan view showing a disk player 38 for a CD according to one embodiment, FIG. 2 is a bottom view, FIG. 3 is a front view, and FIG. 4 is a rear view. FIG. 5 is a right side view,
FIG. 6 shows a left side view.

The insertion slot 39 of the disc player 38
Is provided on the front side of the outer chassis 40 which is bent in a substantially U-shape. At the center of the upper surface 40a of the outer chassis 40, a trapezoidal hole 41 is provided.

In front of the trapezoidal hole 41, a straight guide hole 42
And arc guide holes 43 and 44 symmetrically formed on both sides of the straight guide hole 42.

A substantially T-shaped connecting plate 45 is slidably mounted in the linear guide hole 42.

The arm portions 45a, 45b of the connecting plate 45 are provided with elongated holes 46, 47 intersecting with the arc holes 43, 44.

At the center of the arc holes 43 and 44, support shafts 48 and 49 are mounted, respectively.
Arc holes 50 and 51 centered on the support shafts 48 and 49 are formed in front of the holes 8 and 49.

Central portions of substantially inverted L-shaped guide levers 52 and 53 are rotatably mounted on the support shafts 48 and 49, respectively.

One end side 52a of the guide levers 52, 53,
Pins 54 and 55 project through the elongated holes 46 and 47 of the connecting plate 45 and pass through the arc holes 43 and 44, respectively, and the other ends 52 b and 53 b of the levers 52 and 53 have arcs at 53 a. Contact pins 56 and 57 projecting through the holes 50 and 51 and orthogonal to the insertion port 39 are provided respectively.

The two guide levers 52, 53 are urged by springs 58, 59 whose one ends are locked on the upper side of the trapezoidal hole 41 in the direction in which the contact pins 56, 57 approach each other.

Therefore, the connecting plate 45 can move forward only when a force for rotating the guide levers 52, 53 in a direction against the urging force of the springs 58, 59 is applied. Accordingly, both guide levers 52 and 53 can also rotate.

Slightly outside the center of rotation of the guide levers 52, 53, the front ends 60a, 61a of the stopper retreat levers 60, 61 are locked with play.

Both ends 60a, 6 of the stopper retreat lever 60
0b and a central portion are provided with guide holes 62 to 64 vertically arranged in the longitudinal direction thereof, and each of the guide holes 62 to 64 has a guide pin 66 protruding from the upper surface of the outer chassis 40.
To 68 are engaged.

A lock pin 69 protruding upward is provided near the rear end 60b of the stopper retreat lever 60, and is bent slightly forward of the lock pin 69 toward the stopper hole 70 behind the trapezoidal hole 41. Claw portion 60c is provided.

A central portion of a U-shaped lock lever 71 is rotatably attached to the central guide pin 68.

At the front end 71a of the lock lever 71, a contact pin 73 that penetrates an arc hole 72 centered on the guide pin 68 is attached.

At the rear end 71b of the lock lever 71, the lock pin 6 of the stopper retreat lever 60 slid rearward is provided.
A notch 74 is formed to engage with No. 9 and to restrict its return to the front.

The lock lever 71 is urged in a counterclockwise direction by a spring 75 whose one end is locked to a side end of the outer chassis 40.

Both ends 6 of the other stopper retreat lever 61
Guide pins 76 and 77 protrude from 1a and 61b, respectively.
The guide pins 76 and 77 are respectively engaged with guide holes 78 and 79 provided vertically in the outer chassis 40.

Near the rear end 61b of the stopper retreat lever 61, a claw 61c bent toward the stopper hole 80 behind the trapezoidal hole 41 is provided.

A central portion of a lever 81 is rotatably attached to the guide pin 77 at the rear end 61b of the stopper retreat lever 61. At one end 81a of the lever 81, a pin 83 that penetrates an arc hole 82 at the rear of the outer chassis 40 is attached.

The other end 81b of the lever 81 is provided with a long hole 84, and the long hole 84 is provided in the upper surface 40 of the outer chassis 40.
aThe rear end 85a of the lever 85 arranged at the right end is connected with play.

The lever 85 is always urged rearward by a spring.

Accordingly, when the guide lever 53 rotates and the stopper retreat lever 61 slides backward, the lever 81 rotates clockwise (in FIG. 1) with the other end 81b as a fulcrum. When the pin 83 is pushed backward after the guide lever 53 is locked in a state where the guide lever 53 is largely rotated, the lever 81 further rotates clockwise around the guide pin 77 as a fulcrum, and the lever 85 moves forward. .

A pin 86 projects from a front end 85b of the lever 85 bent along the side surface 40b of the outer chassis 40.

As shown in FIG. 5, one end 87a of an L-shaped lever 87 is engaged with the pin 86.

The center of the lever 87 is rotatably attached to the side surface 40b of the outer chassis 40.
Moves forward, this lever 87 rotates counterclockwise (in FIG. 4).

On the one end 87a side of the lever 87, an inverted L-shaped hole 88 is provided.

In front of the lever 87, a loading gear mechanism 90 for sucking and ejecting a CD, chucking, and fixing and floating an inner chassis 110 to be described later is formed by the rotational force of a loading motor 89.

The first motor directly connected to the loading motor 89
Of the gear 91 of the second gear 92 and the third gear 9
Third, the speed is reduced via the fourth gear 94.

Inside the fourth gear 94, a central portion of a U-shaped lever 95 is rotatably mounted.

One end 95a of the lever 95 is connected to the lever 8
The other end of the lever 95 supports the center of the fifth gear 96.

Below the fourth gear 94, a rack 97 is arranged. The rack 97 is not connected to the fifth gear 96 when one end 95 a of the lever 95 is engaged with the edge of the hole 88 of the lever 87. And lever 8
7 rotates counterclockwise and one end 95a of the lever 95 becomes free, the lever 95 also rotates clockwise together with the fourth gear 94, and the fifth gear 96 rotates in the rack 97 direction. Then, both are connected.

The rack 97 is connected to the side surface 40 of the outer chassis 40.
b, is fixed to the movable side plate 98 disposed inside,
When the rack 97 moves backward, the movable side plate 98 also moves backward, and when the rack 97 returns forward, the movable side plate 98 also returns forward.

The other side surface 40 of the outer chassis 40
A movable side plate 99 that can move back and forth is also mounted inside c.

Guide holes 100 and 101 are formed at the front of the movable side plates 98 and 99 and formed at the front downward.

A roller support plate 102 is disposed between the movable side plates 98 and 99, and pins 102a and 102b projecting from both ends of the rear portion of the roller support plate 102 are connected to the movable side plates 98 and 99, respectively.
99 guide holes 100 and 101, respectively. A lower roller 103 is rotatably supported in front of the pins 102a and 102b of the roller support plate 102.

The front ends of the roller support plate 102 are rotatably supported on both side surfaces of the outer chassis 40. Therefore, when the movable side plate 98 slides rearward, the pins 102a and 102b of the roller support plate 102 are pushed down, so that the roller support plate 102 rotates in a direction of lowering the lower roller 103 with both front ends as fulcrums, Following this operation, the other movable side plate 99 also moves rearward. The upper roller 104, whose both ends are supported on both sides of the outer chassis 40, is in contact with the lower roller 103 from above. The upper and lower rollers 104 and 103 are formed so that the diameter at the center is smaller than the diameter on both sides in order to guide the CD inserted between the rollers to the center.

One end of the upper roller 104 has a sixth gear 105 connected to a fourth gear of the loading gear mechanism 90.
It is directly connected to.

An inner chassis 108 is arranged behind the upper roller 104 and the lower roller 103.

The inner chassis 108 has dampers 109 at the four corners.
And the plurality of springs 110 are supported by the outer chassis 40 in a floating state.

At the center of the rear surface 108a of the inner chassis 108, a frame member 111 integrally formed of plastic is attached.

The frame member 111 has a chuck table 11
A spindle motor 113 for rotating the laser 2 and a servomotor 115 for moving the laser pickup 114 are attached. The servo motor 115 is a gear block 1
The screw shaft 117 is rotated via 16. A laser pickup 114 is provided on the thread of the screw shaft 117.
Of the screw shaft 117 is engaged.
Is rotated, the laser pickup 114 moves along the two guide shafts 119 and 120.

The inner chassis 108 is provided with support pieces 121 to 123 bent to the side.

The support piece 121 is engaged with a Y-shaped notch 124 of the movable side plate 98, and the support piece 122,
123 is a locking notch 125 of the other movable side plate 99,
126 is engaged.

Above the inner chassis 108, a substantially triangular chuck pressing support plate 127 is disposed.

The chuck holding support plate 127 is rotatably supported at its rear ends at both rear ends of the inner chassis 108.

A chuck press 128 is attached to the tip of the chuck press support plate 127.

A stopper shaft 129 is rotatably supported at the center of the chuck pressing support plate 127. On both sides of the stopper shaft 129, a small diameter stopper 8 cm is provided.
Stopper pins 130, 131 project downward.

Outside the stopper pins 130 and 131,
Engaging member 13 that engages with claw portions 60c, 61c of stopper retracting levers 60, 61 to rotate stopper shaft 129
2, 133 are attached.

Therefore, the two stopper retreat levers 6
When 0 and 61 slide rearward, the stopper shaft 129 rotates, and the stopper pins 130 and 13 facing downwards.
1 is in a state facing forward.

The outer shapes of the penetrating portions 130a, 131a through which the stopper shafts 129 of the stopper pins 130, 131 pass are formed in a prismatic shape. The penetrating portions 130a, 1
The leaf spring 31a is pressed from above by leaf springs 134 and 135. The leaf springs 134 and 135 are connected to the stopper shaft 129 by the claw portions 60 of the stopper retracting levers 60 and 61.
c, 61c restricts the movement of the stopper shaft 129 when not engaged.

Behind the stopper pins 130 and 131 for 8 cm, stopper pins 136 and 137 for 12 cm, which are large diameter stoppers, protrude downward from the back surface of the chuck pressing support plate 127.

A support piece 138 bent toward the movable side plate 98 is provided on the side of the chuck holding support plate 127.

The support piece 138 is supported from below by a tip 139a of an arm 139 that rotates in conjunction with the movable side plate 98. When the movable side plate 98 moves backward, the arm 139 also rotates clockwise (see FIG. 4). ), The tip side of the chuck holding support plate 127 rotates downward.

In FIG. 1, reference numeral 140 denotes a sensor substrate, on which optical sensors 141 and 142 for detecting insertion and ejection of a CD are mounted.

Next, the operation of the disc player will be described.

When a large-diameter CD of 12 cm is inserted through the insertion slot 39, the contact pins 5 of the guide levers 52 and 53
6, 57 abut on the outer periphery of the CD and rotate largely outward.

The insertion of the CD is detected by the optical sensor 141,
The loading motor 89 is driven. Therefore, the sixth gear 105 of the loading gear mechanism 90 rotates counterclockwise (in FIG. 4), and the upper roller 104 rotates.

The leading end of the CD has upper roller 104 and lower roller 1
When the CD is inserted between the rollers, the CD is sucked in the direction of the inner chassis 108 so as to be sandwiched between the rollers, and the guide levers 52 and 53 rotate further as shown in FIG.

Since the stopper retreat levers 60 and 61 also move rearward in conjunction with the rotation of the guide levers 52 and 53, the claw portions 60c and 61c engage the engaging members 132 and 133 at both ends of the stopper shaft 129. In this case, the stopper pins 130 and 131 for 8 cm are in a horizontal state.

Further, when the CD is sucked, the contact pin 5
When the interval between 6 and 57 approaches the maximum, the outer periphery of the CD contacts the contact pin 73 of the lock lever 71 as shown in FIG.
The lock lever 71 rotates clockwise.

Therefore, the lock pin 69 of the stopper retreat lever 60 is engaged with the notch 74 of the lock lever 71, and the return of the stopper retreat lever 60 is restricted.

Further, when the suction of the CD continues, as shown in FIG. 9, the tip of the CD contacts the pin 83 of the lever 81, and the lever 81 rotates clockwise. C against the stopper pins 136 and 137
The movement of D stops.

When the lever 85 moves forward due to the rotation of the lever 81, the lever 87 rotates counterclockwise as shown in FIG. 10, and one end 95a of the lever 95 of the loading gear mechanism 90 becomes free. .

In this state, when the rotation of the loading motor 89 continues, the lever 95 rotates clockwise, and the fifth gear 96 attached to the other end is connected to the rack 97.

Therefore, the rack 97 moves backward, and the movable side plate 98 also moves backward.

When the movable side plate 98 moves rearward, as shown in FIG. 11, the roller support plate 102 rotates and the lower roller 103 descends, while the other movable side plate 99 moves.
Also moves backward, and the support piece 1 of the chuck holding support plate 127 is moved.
The arm 139 that has been in contact with the lower surface 38 rotates clockwise, and the chuck presser 1 of the chuck presser support plate 127
28 descends.

When the movable side plates 98 and 99 are further moved backward after the chucking of the CD is performed in this manner, the notches formed between the support pieces 121 to 123 of the inner chassis 108 and the movable side plates 98 and 99. The engagement with 124 to 126 is released, the inner chassis 108 enters a floating state supported by the outer chassis 40 with only the damper 109 and the spring 110, and the loading motor 89 stops.

The CD chucked on the chuck table 112 is rotated by the rotation of the spindle motor 113, and the laser pickup 114 is moved to the music selection position by the rotation of the servo motor 115, so that the CD enters a playing state.

When a CD is inserted from this state,
The loading motor 89 is driven in reverse rotation.

Therefore, the rack 97 moves forward, the two movable side plates 98 and 99 return forward, the inner chassis 108 is fixed to the outer chassis 40, and the chuck holding support plate 127
The chuck presser 128 rises, and the chucking of the CD is released. CD released from chucking
Is inserted into the insertion port 39 side so as to be sandwiched between the lower roller 103 rising from below and the upper roller 104 which is driven to rotate in the reverse direction to the suction.

The outer periphery of the inserted CD is the guide lever 5
When the abutment pins 56 and 57 of 2, 53 are slightly pushed open and passed, the stopper retreat lever 60 moves slightly backward, the engagement between the lock lever 71 and the lock pin 69 is released, and the lock lever 71 rotates counterclockwise and returns to the original state.

If the interval between the contact pins 56 and 57 of the guide levers 52 and 53 becomes smaller after the insertion of the CD continues, the stopper retreat levers 60 and 61 that slide forward are provided.
When the stopper pins 130 and 131 for 8 cm return downward by the claw portions 60c and 61c, and the CD passes between the upper and lower rollers, the loading motor 89 stops.

When an 8 cm CD is inserted, the CD
The guide levers 52 and 53 are slightly pushed open from the outer periphery of the lever and are sucked in. However, since the amount of movement of the stopper retreat levers 60 and 61 to the rear is small, the stopper pins 130 and 131 are provided.
Remains downward.

When the leading end of the sucked CD pushes the pin 83 of the lever 81, and is further sucked and its outer periphery comes into contact with the stopper pins 130 and 131, the rack 97 moves rearward as described above, and the lower roller 102 The lowering of the chuck holding support plate 127 and the floating of the inner chassis 108 with respect to the outer chassis 40 are performed.

When an 8 cm CD is inserted and ejected, the operation reverse to the suction operation is performed.

In this embodiment, a pair of guide levers 52 and 53 are provided with stopper retreat levers 60 and 6 respectively.
1, a lock lever 70 is engaged with one of the stopper retreat levers 60, and a lever 81 for activating loading is connected to the other stopper retreat lever 61. Without limitation, 1
A lever for engaging the lock lever and starting the loading may be connected to the two stopper retracting levers. Alternatively, the lock lever may be deformed so that the guide levers 52 and 53 may be connected.
May be directly regulated.

Further, in this embodiment, the disc player provided with the automatic suction mechanism has been described. However, the present invention can be similarly applied to a disc player in which the disc is manually pushed to the stop position.

[0109]

As described above, the disk player of the present invention rotates so that a pair of guide levers is pushed open when a large-diameter disk is inserted, and the rotation of the guide levers The small-diameter stopper is retracted by the interlocked stopper retracting lever. Then, when the large-diameter disk further enters, the contact portion of the lock lever comes into contact with the outer periphery thereof, and the return operation of the stopper retracting lever or the guide lever is held in a restricted state.

Therefore, the holding or releasing of the retracted state of the small-diameter stopper can be reliably performed in direct association with the disk entering or inserting state. Further, it is not necessary to use a plunger which is expensive and has a problem in supplying power, the mechanism is extremely simplified, and inspection of operation and replacement of parts are greatly facilitated.

[Brief description of the drawings]

FIG. 1 is a plan view of one embodiment.

FIG. 2 is a bottom view of one embodiment.

FIG. 3 is a front view of one embodiment.

FIG. 4 is a rear view of the embodiment.

FIG. 5 is a right side view of the embodiment.

FIG. 6 is a left side view of the embodiment.

FIG. 7 is a schematic plan view showing an operation state of one embodiment.

FIG. 8 is a schematic plan view showing an operation state of one embodiment.

FIG. 9 is a schematic plan view showing an operation state of one embodiment.

FIG. 10 is a schematic enlarged side view of a main part showing an operation state of one embodiment.

FIG. 11 is a schematic side view showing an operation state of the embodiment.

FIG. 12 is a schematic side view showing the configuration of a conventional device.

FIG. 13 is a schematic plan view for explaining a conventional mechanism.

FIG. 14 is a schematic plan view for explaining a conventional mechanism.

[Explanation of symbols]

 38 Disc player 40 Outer chassis 45 Connecting plate 52, 53 Guide lever 56, 57 Contact pin 60, 61 Stopper retreat lever 60d, 61c Claw 69 Lock pin 71 Lock lever 73 Contact pin 74 Notch 81 Lever 83 Pin 85 Lever 87 lever 89 loading motor 90 loading gear mechanism 95 lever 97 rack 98, 99 movable side plate 102 roller support plate 103 lower roller 104 upper roller 108 inner chassis 109 damper 111 frame member 112 chuck table 113 spindle motor 114 laser pickup 115 servo motor 116 gear Block 117 Screw shaft 119, 120 Guide shaft 121-123 Supporting piece 124-126 Locking notch 127 Chuck press support plate 128 Chuck press 129 Stopper shaft 130, 131 Stopper pin 132, 133 Engagement member 134, 135 Leaf spring 136, 137 Stopper pin 138 Leg 139 Arm

Claims (1)

(57) [Scope of request for utility model registration] 1. A disc player for reproducing a large-diameter disc or a small-diameter disc inserted from an insertion slot until the center of the disc reaches a predetermined position. A small-diameter stopper for stopping the entry of the small-diameter disc at a position where the center of the disc coincides with the predetermined position, and abutting on the entry-side outer periphery of the large-diameter disc to enter, so that the large-diameter disc enters the A large diameter stopper that stops at a position corresponding to the predetermined position, and the respective abutting portions protrude into the insertion opening at intervals shorter than the diameter of the large diameter disc, and are inserted from the insertion opening. A pair of guide levers that rotate so as to be pushed open by the entry of the disc when the contact portions abut on the outer periphery of the large-diameter disc; A stopper retracting lever that is connected to at least one of the guide levers and retracts the small-diameter stopper from the approach path of the disc when the guide lever is rotated by the entry of the large-diameter disc; A lock that protrudes a contact portion at a position where it comes into contact with the outer periphery of the diameter disk, rotates by the advance input of the disk, and holds the stopper retreat lever or the guide lever in the return direction movement stopped. A disc player comprising a lever and a lever.