JPH0322261A - Disk discriminating and inserting mechanism for disk deck - Google Patents

Abstract

PURPOSE:To obtain a disk deck, which can be correspondent to the various kinds of disks. by providing first and second lock devices and inserting the disk of a small diameter and the disk of a large diameter while being discriminated without fail. CONSTITUTION:When the first lock device is in contact with the outer peripheral part of a disk 16S to which a pair of disk engaging pins 30 and 32 are inserted together, a pair of slide levers 50 and 52 are permitted to be moved together with these pins 30 and 32 so as to be mutually separated. These slide levers 50 and 52 are energized by springs 60 and 62 so as to be mutually close. After the disk 16S is inserted, the second lock device maintains a pair of these slide levers 50 and 52 in a separated position rather than the first position until the disk is discharged. Thus, the disk of the small diameter and the disk of the large diameter can be inserted while being discriminated without fail.

Description

[Detailed Description of the Invention] [Summary] In a CD disk deck, for example, a C with a diameter of 12 cm
In order to accommodate both D discs and CD discs with a diameter of 8 cm, the type of disc is determined while being inserted. For this reason, a pair of disk engaging pins are provided in the middle of the disk insertion path, and a small diameter disk is passed between these disk engaging pins. A larger diameter disk is inserted while pushing open the disk engagement pin. A pair of slide levers supports each disc engagement pin and moves away from each other when the disc engagement pins are opened.

The slide levers are maintained at positions farther from each other than their initial positions from the time the disc is inserted until the disc is ejected, so that it is possible to know that a large diameter disc is being used throughout the performance.

[Industrial application field]

The present invention relates to a disc identification/insertion mechanism for a disc deck.

[Conventional technology]

Conventionally, CD discs with a diameter of 12 cm have been used, but recently CD discs with a diameter of 3 cm have also come into use, so there is a need for a CD disc deck that can accommodate CD discs of different diameters. There is. There are two types of CD disk decks: a tray-one type in which the CD disk is placed on a tray and carried to a turntable, and a slot-in type in which the CD disk is directly inserted into the deck's insertion slot without using a tray.

[Problem to be solved by the invention]

In slot-in type CD disc decks, C
When a D disc is inserted into the deck's insertion slot, a drive roller is activated to automatically load the CD disc onto the turntable. However, when the diameter of the CD disc changes, the distance and time the CD disc travels from the drive roller to the turntable, as well as the distance and time it takes from the turntable to the insertion slot upon ejection, change.

Additionally, there are differences in the feed of the pickup depending on the disc. As described above, since loading, feeding, and other controls differ depending on the type of CD disc, it has become necessary to automatically determine the type of inserted CD disc.

SUMMARY OF THE INVENTION An object of the present invention is to provide a disc identification/insertion mechanism for a disc deck that can insert a disc while determining its diameter.

[Means to solve the problem]

A disc identification/insertion mechanism for a disc deck according to the present invention includes a pair of disc engaging pins arranged at a distance in the horizontal direction in the middle of a disc insertion path between a disc insertion opening and a turntable, and a pair of slide levers each supporting an engagement pin and movable toward and away from each other in the substantially lateral direction; and a relatively small diameter disk capable of passing between the pair of disk engagement pins. , and the pair of slide levers are locked in the first position to maintain the pair of disc engaging pins in an initial position where the relatively large diameter disc contacts the pair of disc engaging pins. and a first that allows the pair of slide levers to move away from each other together with the pair of disk engagement pins when the pair of disk engagement pins both come into contact with the outer periphery of the inserted disk. a locking means, a spring that biases the pair of slide levers toward each other, and a spring that urges the pair of slide levers to move the pair of slide levers away from the first position from the time the disk is inserted until the disk is ejected. and a second locking means for maintaining the device in the second position.

[For production]

The pair of disc engagement pins are maintained at a predetermined distance in the initial position by the action of the first locking means. This predetermined spacing is determined based on the diameter of the disc to be used, such that smaller diameter discs can pass between the disc engagement pins maintained at the predetermined spacing. The larger diameter disk contacts both disk engagement pins, thus causing the pair of slide levers to move away from each other along with the pair of disk engagement pins. The pair of slide levers are actuated by a spring so as to move closer to each other. However, when the slide levers move away from each other due to the insertion of the disk, the disk is not returned immediately after passing between the disk engagement pins, but the disk is inserted due to the action of the second locking means. It is maintained at a second position farther away than the initial position until it is discharged. In this way, when a large diameter disc is inserted, the slide lever is maintained in the second position, so that the presence of a large diameter disc can be detected, for example, throughout the performance by means of associated sensor signals, etc. It is possible to control the feeding of the disc, etc. The slide lever is returned to the first position when the disk is again engaged with the disk engagement pin when the disk is ejected.

At this time, if at least one of the slide levers is configured to actuate a switch, its signal can be used to determine the ejection stroke of the large diameter disc, and if the large diameter disc is It is possible to prevent problems such as being ejected and falling from the insertion slot.

〔Example〕

The present invention will be explained below based on examples.

FIG. 1 is a plan view showing the inside of a CD disc deck. The CD disc deck includes a generally rectangular bottom holder 10. A disc-shaped clamper 12 is arranged approximately in the center of the bottom holder 10, and a turntable 14 is arranged directly below this disc-shaped clamper 12.

Figure 1 shows two types of CD discs 163 with different diameters.
．． 16L is shown by dashed lines in a supported position on turntable l4. The CD disc 163 has a diameter of, for example, gem, and the CD disc 16L has a diameter of, for example, 1
It is 2 am. The CD disks 16S and 16L are supported one by one on the turntable 14 during performance, and are crushed by a disc-shaped clanber 12. The disc-shaped clamper 12 is supported by an arm 18, and the arm 18 is supported by a holder 22 of the turntable 14 by a pivot pin 20. The arm l8 of the clamper 12 and the holder 22 of the turntable 14 are normally supported in a floating manner with respect to the bottom holder 10, and the clamper 12 is attached to the turntable by, for example, moving the guide portion 18a of the arm l8 up and down with an actuator such as a slider. 14
It can be brought into an unclamped position where it is raised at a slight angle to the disc, and a clamped position where it is in close contact with the turntable 14 with the disc sandwiched therebetween.

CD discs 16S and 16L are inserted from the insertion slot 24 by the arrow IN.
It is designed to be inserted in the direction of A drive roller 26 is provided between the insertion port 24 and the turntable 14,
A guide plate with good sliding is provided above the drive roller 26. The drive roller 26 is rotated by a gear (not shown) and conveys the CD disks 163, 16L to the turntable 14 through between the drive roller 26 and the guide plate.

The drive roller 26 is supported by an arm 28, and by raising and lowering the arm 28, it moves between an upper position where it can feed the CD discs 163, 16L in cooperation with the guide plate, and a lower position where it moves away from the CD discs 163, 16L after insertion. brought to you.

As shown in FIG. 1, a pair of disc engagement pins 30
．． 32 is provided near the disk insertion opening 24. A pair of disc engagement pins 30, 32 are connected to the turntable 14.
and spaced apart laterally with respect to a disk insertion path shaped in the direction of the arrow IN. FIG. 1 shows the disk engagement pins 30, 32 in the initial position, in which the smaller CD disk 16S is connected to the pair of disk engagement pins 30, 32.
0.32, but the larger CD disc 16L contacts the pair of disc engagement pins 30.32,
The disc engagement pins 30 and 32 must be pushed open to pass through. Disc engagement pin 3
The position when the 0.32 is opened by the larger CD disc 16L is indicated by dashed lines 30a and 32a. Furthermore, another pair of disc engagement pins 34, 36
is provided near the turntable 14 near the first disc engagement pin 30,32. Hereinafter, the first mentioned disc engaging pins 30, 32 will be referred to as first and second disc engaging pins, respectively, and the later mentioned disc engaging pins 34 will be referred to as first and second disc engaging pins, respectively.
．． 36 are referred to as third and fourth disk engagement pins, respectively.

As shown in FIG. 1, positioning pins 40, 42 are provided at positions where they come into contact with the outer periphery of the smaller CD disk 16S when supported by the turntable 14. These positioning pins 40, 42 are supported by pin support levers to be described later, and extend from the position where they contact the outer periphery of the smaller CD disk 16S to the outer periphery of the larger CD disk 16L when supported by the turntable 14. It is possible to move to positions 40a and 42a further outside the section. Furthermore, fixed positioning pins 44, 46 are provided at positions where they abut against the outer periphery of the larger CD disc 16L. Furthermore, an insertion completion detection pin 48 is provided for detecting the completion of insertion of the disc, and has an initial position where it abuts the outer periphery of the smaller CD disc 165 immediately before being supported by the turntable 14; The smaller CD when supported by the turntable 14 from this initial position
The position where it contacts the outer circumference of the disk 163, the position where it abuts the outer circumference of the larger CD disk 16L just before it is supported by the turntable 14, and the position where it abuts the outer circumference of the larger CD disk 16L when it is supported by the turntable 14.
and the position of contact with the outer periphery of the CD disc 16
It is possible to sequentially move to positions outside the outer periphery of L.

FIG. 2 is a diagram showing a horizontal upper holder 10a disposed above the operating area of the clamper 12, drive roller 26, etc. of FIG. 1. The upper holder 10a has the above-mentioned eleventh second, third, and fourth disk engaging pins 30, 32,
34. A lever mechanism is provided to support and actuate 36, positioning pins 40, 42, and insertion completion detection pin 48. Each of these pins extends downwardly from an associated lever and through an associated hole in the upper holder 10a to reach the actuating area shown in FIG.

Referring to FIGS. 2 and 3, the slide lever 50,
52 is arranged in the immediate vicinity of the insertion slot 24 in a direction transverse to the disk insertion direction IN. Slide lever 50.52
support first and second disk engaging pins 30.32 downwardly at their respective outer ends (corresponding to the central and outer ends of the insertion opening 24).

These slide levers 50 and 52 are arranged substantially in a straight line, and their inner ends are slidably overlapped with each other. These slide levers 50,5
A smaller first locking lever 54 is superimposed on the overlapped portion of the two. Furthermore, each slide lever 50
．． A pivot lever 5 is provided at the outer end of the lever 52 as a second locking means.
6.58 is installed.

These pivot levers 56, 58 are connected to each slide lever 50.
．． 52 first and second disc engagement pins 30.32, i.e. the pivot lever 56.58
and rotatably attached to the second disk engagement pin 30.32. First and second disc engagement pins 30.
32 extends below the pivot levers 56, 58 and is engageable with the disc. The third and fourth disk engaging pins 34, 36 are mounted downwardly on the other ends of these pivot levers 56, 58.

Also, springs 60.62 are connected to each pivot lever 56.58.
and the upper holder 10a. The first action of these springs 60, 62 is to return the slide levers 50, 52 toward each other;
The second action is to move the pivot lever 56,58 to the slide lever 5.
0.52. It is also possible to perform these two functions by separate springs.

As shown in FIG. 3, slide levers 50, 52 each slide proximate first and second disk engagement pins 30, 32}50a. 52a with two slits on opposite overlapping ends}50b-50c. 5
2 b - 52 c. Here, the second slit 50C from the right side of the left slide lever 50 is a two-step continuous slit with a taper, and similarly, the slit 52c on the left end side of the right slide lever 52 is also a two-step continuous slit with a taper. be. In addition, the first locking lever 5
4 has a hole 54a on the right end side and a downward pin 54b on the left end side. On the other hand, the upper holder 10a has three support pins 10'b. , 10C, 10d are erected upward at both ends and the center, and holes 10e,
10f. lOg, 10h. 10i is provided. hole 1
0e, 10f = 10g, 10h are holes through which each disc engagement pin 30.32.34.36 passes into the lower working area.

The slits 50a and 50b of the left slide lever 50 are engaged with the support pins 10b and 10d of the upper holder 10a, and the slits 52a and 52b of the right slide lever 52 are engaged with the support pins 10b and 10d of the upper holder 10a.
are engaged with support pins 10c and 10d of upper holder 10a. Then, the hole 54a on the right end side of the first locking lever 54 is engaged with the support pin 10d of the upper holder 10a. The slide levers 50, 52 are thus each guided to move in a linear direction by the engagement of two pins and slits, and the first locking lever 54 is connected to the support pin 10.
d (hole 54a) as the center. And,
A downward pin 54b at the left end of the first locking lever 54
are commonly inserted into the slits 5Qc and 52C of the slide levers 50 and 52 stacked one above the other. The downward pin 54b of the first locking lever 54 is inserted into the slit 50C of the upper and lower slide levers 50, 52. 52C, the upper and lower slide levers 50.
Even if one of them attempts to move either of them outward, neither of them can be moved. Only when it is desired to simultaneously move both slide levers 50, 52 away from each other, the first locking lever 54 can be pivoted downwards to move them both. Therefore, when inserting the smaller CD disc 163, even if the disc shifts to one side and comes into contact with one of the disc engagement pins 30, 32, the slide levers 50, 52 remain in their initial positions without moving. Ru. In this case, therefore, the disc engagement pin 30.32 has the effect of a centering guide for the disc. When the larger CD disc 16L is inserted, it comes into contact with both disc engagement pins 30.32, allowing both slide levers 50.52 to move away from each other.

FIG. 4 is a diagram illustrating in more detail the movement of the vertically stacked slide levers 50, 52. (A) in Fig. 4 shows the initial position or the first position from the upper and lower slide levers 50 and 52.
The downward pin 54b of the first locking lever 54 is located at the 2nd position of the upper and lower slide levers 50 and 52.
They are placed in the upper slits of the tier slits 5Qc and 52C, respectively. Here, as shown in FIG. 4(B), even if you try to move only the upper slide lever 52 in the right direction indicated by arrow R, the downward pin 54b of the first locking lever 54 will not move. The two-stage slit 50c of the lower slide lever 50 hits the lower wall surface of the upper slit and cannot pivot downward, so that a portion of the taper of the two-stage slit 52C of the upper slide lever 52 engages in the first engagement. It hits the downward pin 54b of the stop lever 54, and the upper slide lever 52 cannot move any further. The same applies to the lower slide lever 50. In this manner, when one of the upper and lower slide levers 50, 52 is moved, the movement is only equivalent to the backlash of the upper slit of the two-stage slits 50C, 52c.

Next, as shown in FIG. 4(C), move the upper slide lever 52 in the right direction indicated by arrow R, and move the lower slide lever 50 in the left direction indicated by arrow L. Then, a V-shaped passage is opened by the lower wall surface of the taber portion of each of the two-stage slits 50c and 52c, and as shown in FIG. 4(D), the downward pin 54b of the first locking lever 54 is opened. Each two-stage slit 50C,
52C is pushed by the upper wall surface of the tapered part and rotates downward, and each two-stage slit}50c. Enter the slit at the bottom of 52c. The lower slits of the two-stage slits 5Qc and 52C are elongated to allow the upper and lower slide levers 50, 52 to move away from each other. In addition, when the upper and lower slide levers 50 and 52 return to their initial positions from the open state, the first locking lever 5
The downward pin 54b of 4 is the vertical slide lever 50.
52 two-stage slit 5Qc. Enter the upper slit of 52C.

FIG. 5 is a view showing the slide lever 50 and the pivot lever 56 on the left side of FIG. 2 from the bottom side. The pivot lever 56 is provided with a concave locking portion 56a that can be engaged with the support pin 10b of the upper holder 10a. The operations of the slide lever 52 and the pivot lever 58 on the opposite side are similar. When the larger CD disc 16L is inserted in the direction of arrow IN, both slide levers 50, 52 are moved away from each other as described above. Initially,
As shown in FIG. 5(A), the CD disc 16L
The outer peripheral part of the leading side, that is, the outer peripheral part with a chord smaller than the diameter seen in the lateral direction, contacts the first and second disc engaging pins 30, 32, and the slide lever 50 is connected to the support pin of the upper holder lOa. 10b (which engaged with the slit 50a) in the direction shown by the arrow L. At this time, the third disc engaging pin 34 is still attached to the CD disc 1.
6L, the pivot lever 56 moves together with the slide lever 50 in the direction indicated by arrow L. As the CD disc 16L advances, the third disc engaging pin 3
The chord of the outer circumferential portion of the CD disc 16L for position 4 becomes close to the diameter. Then, as shown in FIG. 5B, the CD disc 16L is attached to the third disc engaging pin 34.
5, so that the slide lever 50 moves in the direction indicated by arrow L with the first disc engagement pin 30, and the pivot lever 56 pivots on the slide lever 50 in a clockwise direction in FIG. .

As shown in FIG. 5(C), the CD disc 16L
After the outer peripheral portion corresponding to the lateral diameter of has passed the first and second disc engagement pins 30.32, the first and second disc engagement pins 30.32 and the slide levers 50, 52 The slide levers 50 now move closer to each other in the opposite direction, and the slide levers 50 begin to return in the direction indicated by the arrow R. However, as shown in FIG. 5(D), while the slide lever 50 is returning to the direction indicated by the arrow R and the swing lever 56 is turning clockwise in FIG. The concave locking portion 56a of 56 comes to engage with the support pin IQb of the upper holder 10a. The turning lever 56 cannot turn at this position, and the slide lever 50 stops at that position. Therefore, the slide lever 50 is maintained at the second position outside the initial position.

When the CD disc 16L is ejected, the CD disc 16L is initially placed in the first position, as shown in FIG. 5(D).
and second disc engagement pin 30.32 and third and fourth disc engagement pins 34.36, and slide lever 50 and pivot lever 56 are moved in the direction shown by arrow L. During the transition from (D) to (C) in FIG. 5, the concave locking portion 56-a of the swing lever 56 separates from the support pin 10b of the upper holder 10a, and as shown in (C) in FIG.
5, the pivot lever 56 pivots counterclockwise in FIG. 5 relative to the slide lever 50, and the concave locking portion 56a of the pivot lever 56 supports the upper holder 10a. It comes to a position that is not aligned with pin IQb. As the CD disc 16L is ejected, the slide lever 50 returns to the direction indicated by the arrow R. In this case, the concave locking portion 5 of the swing lever 56
6a does not engage with the support pin 10b of the upper holder 10a, the slide lever 50 returns to its initial position.

Referring to FIG. 3, a light receiving section 64 of a photosensor such as a phototransistor is arranged on the upper holder 10a, and is visible from the central hole 10i, for example. Above the light receiving part 64 of the optical sensor, a related light emitting part (not shown) is located on the holder 10, and a CD disc 163.
16L passes between the light receiving part 64 and the light emitting part of these optical sensors, the driving motor (not shown) of the driving roller 26 (FIG. 1) is activated.CD disc 163
．． The insertion completion detection pin 48 (FIG. 1) detects that the CD disc 16316L has reached the top of the turntable 14, and the CD disc 16316L reaches the positioning pin 40. 42. 44
．． 46, the drive roller 26 is stopped. The clamper l2 is then lowered to the clamping position, and the drive roller 26 is also lowered to the lower position. Thus, the performance begins.

Further, a switch 66 is arranged on the wall of the hole 101 in the center of the upper holder lOa, in addition to the light receiving section 64 of the optical sensor. The left slide lever 50 is provided with a switch engaging protrusion 50d, and this switch engaging protrusion 50d is arranged to face the operating piece of the switch 66. When the left slide lever 50 is in the initial position, the switch engaging protrusion 50d pushes the actuating piece of the switch 66, and when the left slide lever 50 moves to the left, the switch engaging protrusion 50d pushes the actuating piece of the switch 66. It's starting to move away. This switch 66 is used to generate a signal to determine that the larger CD disc 16L has been inserted, and to stop the motor of the drive roller 26 when the larger CD disc 16L is ejected. That is, when ejecting a disk, the electric motor of the drive roller 26 is controlled by a control device (not shown) so that the ejection stroke corresponds to the type of disk. In the case of the smaller CD disc 16S, there is no problem if the motor is stopped at the position set by the control device, but when the larger CD disc 16L is ejected, there is a possibility that the disc may fall from the insertion slot. . The reason for this is that when the larger CD disc 16L is ejected, more than half of the CD disc 16L is inserted into the insertion slot 24.
This is because only a small portion of the CD disc 16L is held on the deck, and if there is variation in the timing of stopping the drive roller 26, the CD disc 16L is likely to fall off the deck. Therefore, the larger CD
When ejecting the disc 16L, remove the CD disc 16L.
Slide the slide lever 50 in contact with the CD disc 16
It is preferable to use it as a discharge position sensor for L and turn off the switch 66 in order to eliminate variations in the final discharge position.

Next, other levers will be briefly explained with reference to FIG. A base slide lever 70 is provided which is movable parallel to the slide levers 50,52. The base slide lever 70 has an elongated hole-shaped engagement portion 70a that engages with the third disk engagement pin 36 provided on the pivot lever 58, and thus interlocks with the pivot lever 58. A three-star intermediate transmission lever 72 and a lock release lever 74 are arranged partially overlapping the base slide lever 70. The intermediate transmission lever 72 is connected to a fulcrum 72 provided on the upper holder 10a.
The lock release lever 74 is rotatable around a fulcrum 74 a provided at one end of the intermediate transmission lever 72 . And the three star-shaped intermediate transmission lever 7
2 and one end 72b of the lock release lever 74. 74b are respectively linked with the base slide levers 70. A spring 75 is disposed between the lock release lever 74 and the base slide lever 70, and thus biases the lock release lever 74 clockwise, and also forces the intermediate transmission lever 72 clockwise via the lock release lever 74 and the fulcrum 74a. Force in the rotational direction.

Bell crank-shaped positioning levers 76,78 are arranged at the bottom of each lever on the upper surface of the upper holder 10a. The positioning levers 76 and 78 are connected to the positioning pins 40 and 4, respectively.
2 is supported downward. Positioning lever 76.
78 are fulcrums 76a.
78a, and are connected to operate synchronously by the engagement relationship between a pin 78b and a slit 76b provided in the overlapping portion. Pin 72C provided at the third end of the three-star intermediate transmission lever 72
is connected to one of the positioning levers 78, so that by moving the intermediate transmission lever 72, the positioning lever 76
．． 78 can be moved.

Furthermore, a locking lever 80 is arranged in a layer between the positioning lever 78 and the intermediate transmission lever 72. The lock lever 80 is slidable parallel to the base slide lever 70, and locks the positioning lever 78 when it is in the right position in FIG. 2, and unlocks it when it is in the left position. The other end of the lock release lever 74 engages with the lock lever 80 to operate the lock lever 80 to the lock position and the unlock position. Further, an insertion completion lever 82 is provided on the lower surface of the upper holder 10a, and this insertion completion lever 82 supports the insertion completion detection pin 48 downward.

The insertion completion lever 82 is a fulcrum 82 provided on the intermediate transmission lever 72.
It is rotatable around point a, and supports an upwardly directed pin 82b at its other end. When the smaller CD disk 16S reaches the predetermined position, the insertion completion detection pin 48
The insertion completion lever 82 is actuated by hitting the button. Insertion completion lever 8
2 is used to activate subsequent operations, but detailed explanation thereof will be omitted here.

Furthermore, when the base slide lever 70 moves to the right position (that is, when the larger CD disc 16L is inserted), the lock release lever 74 rotates counterclockwise around the fulcrum 74a and locks the lock lever 80. Activate it to the left unlock position. At the same time, is the intermediate transmission lever 72 the fulcrum? 2H in a counterclockwise direction, and rotates the positioning lever 78 in a counterclockwise direction around a fulcrum 78a via a connecting pin 72G. Therefore, the positioning lever 78 moves the positioning pin 42 from a position corresponding to the outer periphery of the smaller CD disk 16S to a position outside the outer periphery of the larger CD disk 16L.

The larger CD disc 16L is therefore positioned on the turntable 14 by its own fixed positioning pin 44, 46 (FIG. 1).
, the insertion completion lever 82 rotates around the pin 82b facing upward at the other end, and the insertion completion detection pin 4
8 to the position corresponding to the larger CD disc 16L. Therefore, in this case as well, the insertion completion lever 82 is used to detect the completion of insertion of the larger CD disk 16L and to start the subsequent operation.

〔effect〕

As described above, according to the present invention, a pair of slide levers each supporting a pair of disk engaging pins and movable toward and away from each other in the substantially lateral direction, and a pair of slide levers having a relatively small diameter for maintaining the pair of disk engaging pins in an initial position such that the disk can pass between the pair of disk engaging pins, and the relatively large diameter disk is in contact with the pair of disk engaging pins. When the pair of slide levers are locked in the first position and both of the pair of disc engagement pins come into contact with the outer periphery of the inserted disc, the pair of slide levers together with the pair of disc engagement pins are locked. a first locking means that allows the levers to move away from each other; a spring that biases the pair of slide levers toward each other; and a first locking means that allows the levers to move away from each other; and a second locking means for maintaining the pair of slide levers at a second position that is further away from the first position, so that it is possible to reliably discriminate between a small diameter disk and a large diameter disk. This makes it possible to obtain a disc deck that can accommodate different types of discs.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the inside of a CD disk deck according to an embodiment of the present invention, FIG. 2 is a plan view showing a lever mechanism located above the operating area of FIG. 1, and FIG. An exploded plan view showing details of the slide lever and the locking lever, No. 4
The figure is a partially enlarged view illustrating the locking and sliding actions of the slide lever in FIG. 3, and FIG. 5 is a partially enlarged view illustrating the action of the pivot lever in FIG. 3. 12... Clamper, 14... Turntable, 16
S. 16L...CD disk, 24...Insertion slot, 26...Drive roller,
30.32... Disc engaging pin, 34.36... Disc engaging pin, 40.42... Positioning pin, 44.46... Positioning pin, 48... Insertion completion detection pin, 50 .52...Slide lever, 54...First locking lever, 56. 58...Swivel lever 60.62...Spring, 66...Switch, 70...Base slide lever 72...Intermediate transmission lever 74...Lock release lever 76.78...Positioning lever, 80...Lock lever 82...Complete insertion reher C
B) (C) (D) Partially enlarged view Fig. 4 explaining the locking and sliding action of the slide lever

Claims (1)

[Scope of Claims] 1. A pair of disc engaging pins arranged at a distance in the horizontal direction in the middle of a disc insertion path between a disc insertion opening and a turntable; a pair of slide levers supporting each other and movable toward and away from each other in the substantially lateral direction; a relatively small diameter disk can pass between the pair of disk engagement pins; a larger diameter disk locks the pair of slide levers in a first position to maintain the pair of disk engaging pins in an initial position in contact with the pair of disk engaging pins; a first locking means that allows the pair of slide levers to move away from each other together with the pair of disk engaging pins when the disk engaging pins of both come into contact with the outer periphery of the inserted disk; a spring that biases the pair of slide levers toward each other; and a spring that biases the pair of slide levers toward each other from the time the disk is inserted until the disk is ejected. and second locking means for maintaining the disc in position. 2. Disc discrimination of the disc deck according to claim 1, wherein at least one of the pair of slide levers is configured to operate a switch, so that it is possible to detect that a large diameter disc is inserted. Insertion mechanism.