JPH082838Y2 - Clamp mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Overview In the present invention, a clamper fixing piece that protrudes toward a clamper is formed on an insertion completion lever that detects completion of insertion of a disk to be inserted into a disk reproducing device. The clamper fixing piece comes close to the clamper located at the non-clamping position when the disc is not mounted, and firmly fixes the clamper. Therefore, the clamper in the non-clamp position does not generate undesired vibrations and the like, and the generation of unpleasant noise can be prevented. In addition, the clamper fixing piece is configured to fix the clamper along a substantially horizontal plane and is not configured to push down the clamper to the lower side where the turntable is arranged, so that the loading space where the disk is brought is narrowed. Never.

On the other hand, when the disk is brought onto the turntable, the insertion completion lever is rotated by the outer peripheral edge of the disk, and as a result, the clamper fixing piece is also separated from the clamper. In this way, the rotatable clamper is brought to the clamp position, and the disk can be clamped with the turntable. Therefore, the clamper fixing piece does not hinder the clamp operation.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp mechanism for clamping a disc-shaped body such as a compact disc on a turntable.

Conventional technology Conventionally, compact disks (hereinafter referred to as "disks")
Say. ), A tray system in which the disk is placed on a tray and guided to the turntable, and a slot-in system in which the disk is directly inserted into the insertion port of the disk playback device without using the tray. There is. In the slot-in type disc reproducing apparatus, when a disc is inserted into the insertion opening, a driving roller or the like operates to load the disc and automatically position it on the turntable. The disk positioned on the turntable is clamped on the turntable by the clamp mechanism, and thereafter the reproducing operation is executed.

FIG. 12 is a side view showing the configuration of the clamp mechanism 2 in the conventional disc reproducing apparatus 1. A substantially disk-shaped turntable 3 is arranged inside the disk reproducing device 1, and a clamp mechanism 2 is arranged above the turntable 3. The clamp mechanism 2 includes a swinging member 4 which is swingable around a pivot pin 17 provided upright on a holder (not shown) and a clamper 5 supported by the swinging member 4. The clamper 5 is formed of an elastic material such as Teflon (registered trademark) in a substantially disc shape, and has a pressing portion 6 for pressing and sandwiching the disk with the turntable 3, and a connecting portion 7 having a diameter smaller than the pressing portion 6. Further, it comprises a locking portion 8 having a diameter larger than that of the connecting portion 7. An opening 18 is formed in the swing member 4, and the clamper is formed by engaging a connecting portion 7 which is a recess between the pressing portion 6 and the locking portion 8 with an inner peripheral edge of the opening 18. 5 is supported on the rocking member 4.

Fitting pin that is erected from the bracket 9 of the swing member 4
Reference numeral 10 is fitted into a cam groove of a slide lever (not shown) that slides along the disc insertion direction 11, and the slide lever slides so that the clamper 5 is located above the turntable 3. It is brought to a non-clamping position which is arranged in a floating state and a clamping position which presses a disk mounted on the turntable 3. The clamp cover 12 standing on the swinging member 4 supports the protruding portion 13 protruding on the locking portion 8 of the clamper 5 brought to the clamp position by point contact, and rotates the clamper 5 at the time of reproduction. Hold.

Thus, the clamper 5 in the unclamped position is supported on the swinging member 4 and is in a free state in which it is lowered by its own weight. As a result, if the oscillating member 4 is merely supported, the clamper 5 will move when receiving vibrations, for example, and an unpleasant sound will be generated.

Therefore, conventionally, as shown in FIG. 12, a spacer 15 such as an elastic rubber is provided on the inner side of the lid or the upper wall portion 14 of the device 1 at a position facing the clamper 5, and the unclamping is performed. The clamper 5 at the position is pushed down by the spacer 15.

Problems to be Solved by the Invention With the configuration described above, the clamper 5 in the unclamped position
It is possible to avoid undesired movements due to vibration of the, and to suppress the generation of unpleasant noise. However, due to the structure, the clamper itself is pushed downward, and the loading space 16 of the disc between the clamper 5 and the turntable 3 in the non-clamp position becomes narrow.
The loading space 16 needs to be wide enough to smoothly bring the disk to the turntable 3.

Therefore, an object of the present invention is to provide a clamping mechanism that can eliminate undesired movement of the clamper in the non-clamping position with a simple structure and can sufficiently secure the loading space of the disk-shaped body. To do.

Means for Solving the Problems The present invention relates to a clamp mechanism for clamping a disk-shaped body on the turntable by a clamper supported by a swing member that swings with respect to a turntable, in the vicinity of the turntable. An outer peripheral edge of the disk-shaped body provided on the turntable, the lever piece rotating by pressing a standing drive piece, and the lever piece protruding from the lever piece toward the clamper, When the drive piece is not pressed by the outer peripheral edge, the clamper is firmly fixed on the swing member in the vicinity of the clamper, and when the drive piece is pressed by the outer peripheral edge, the clamper is separated from the clamper according to the rotation of the lever piece. A clamp mechanism including:

Operation According to the present invention, the clamp mechanism clamps the disk-shaped body on the turntable by the clamper supported by the swing member that swings with respect to the turntable. A lever piece is provided near the turntable,
A drive piece is erected on the lever piece and is pressed by the outer peripheral edge of the disk-shaped body brought on the turntable. The lever piece rotates when the driving piece is pressed.

In the present invention, the clamper fixing means is provided so as to project from the lever piece toward the clamper. The clamper fixing means firmly fixes the clamper on the swing member in the vicinity of the clamper when the drive piece is not pressed by the outer peripheral edge of the disk-shaped body. Therefore, the vibration of the clamper can be eliminated at the unclamped position. Further, since the clamper is abutted and fixed from the side portion, the clamper is not pushed downward and the loading space of the disk-shaped body is not narrowed.

On the other hand, when the driving piece is pressed by the outer peripheral edge, the clamp fixing means is separated from the clamper according to the rotation of the lever piece. Therefore, it does not restrict the clamping of the disc-shaped body of the clamper brought into the clamping position.

Embodiment FIG. 1 is a plan view showing the structure of a lever mechanism in this embodiment, FIG. 2 is a plan view showing the inside of a disk reproducing device 41, FIG. 3 is a side view showing the lever mechanism, and FIG. 3 is a side view showing the inside of the disk reproducing device 41. FIG. The disk reproducing device 41 includes a bottom holder 42 having a substantially rectangular shape. A disk-shaped clamper 43 is arranged substantially in the center of the bottom holder 42, and a turntable 44 is provided just below the disk-shaped clamper 43.
Is arranged. In FIGS. 1 and 2, two types of disk-shaped compact disks (hereinafter referred to as “disks”) 45S and 45L having different diameters are turntables 44.
The virtual position supported above is also shown. The disk 45S has a diameter of 8 cm, for example, and the disk 45L has a diameter of 12 cm, for example.

The discs 45S and 45L are supported by the turntable 44 one by one at the time of reproduction and clamped by the disc-shaped clamper 43. The clamper 43 is made of an elastic material such as Teflon, and has a pressing portion 43a for pressing the disks 45S, 45L onto the turntable 44, a connecting portion 43b having a smaller diameter than the pressing portion 43a and continuing upward, and Connection part 4
Locking portion 4 having a diameter larger than 3b and continuing above the connecting portion 43b.
Including 3c and. A swing member 46 is swingably supported around a pivot pin 47 in a holder 48 around the turntable 44, and an opening 46a formed in a portion of the swing member 46 facing the turntable 44 downward. The connecting portion 43b, which is a recess of the clamper 43, is engaged with the inner peripheral edge of the. With respect to the clamper 43 engaged with the opening 46a, the locking portion 43 is provided by a covering member (not shown).
By covering from above c, the clamper 43 is rotatably supported without falling off from the swing member 46.

When the disks 45S, 45L are not mounted on the turntable 44, the clamper 43 is located at a non-clamp position where the clamper 43 is held above the turntable 44 in a floating state. In the present embodiment, the clamper fixing piece 160 formed so as to project from the insertion completion lever 83, which will be described later, urges the clamper 43 in the unclamped position in proximity. The free end portion 163 of the clamper fixing piece 160 is close to the clamp 43 along the upper side surface of the swinging member 46, and as shown in FIG. It is also arranged so as to dig in toward the connecting portion 43b which becomes In this way, the clamper 43 holds the swing member 46 and the clamp fixing piece 160 between the locking portion 43c and the pressing portion 43a.

Since the height of the connecting portion 43b of the clamper 43 is thicker than the thickness of the swinging member 46 and has a space for play, it has been in a state of easy swinging in the past. In the present embodiment, by interposing the clamper fixing piece 160 in the space of the play, the play is avoided and the clamp is firmly fixed. Therefore, even in an environment where vibration is likely to occur in the disk reproducing device 41 such as a vehicle-mounted device, the clamper 43 in the unclamped position does not vibrate and does not generate an unpleasant sound.

Further, the clamper fixing piece 160 is generally arranged in the insertion direction 5
As the clamper 43 located at the non-clamping position is turned into the turntable
It does not push down to the lower side. Therefore, the disc 45 between the turntable 44 and the clamper 43
It is possible to efficiently secure the space 165 without narrowing the loading space 165 where the S, 45L is introduced.

A fitting pin 50 that is erected on the bracket 49 of the swing member 46.
By vertically guiding along the cam groove 142 of the sliding lever 114 described later, the clamper 43 can be brought to the non-clamping position and the clamping position where the disk is clamped and in close contact with the turntable 44. it can. The outer peripheral edges of the disks 45S and 45L brought onto the turntable 44 rotate an insertion completion lever for detecting completion of insertion of the disk, as described later. Therefore, the clamper fixing piece 160 provided so as to project from the insertion completion lever 83 is also separated from the clamp 43 as shown in FIG. 5 according to the rotation of the insertion completion lever 83. In this way, the clamper 43 located at the clamp position is not restricted by the clamper fixing piece 160 and can be rotated freely in the disk 45S,
The 45L is sandwiched between the turntable 44.

In this way, the structure of the clamper 43 brought to the clamp position and the non-clamp position with respect to the turntable 44 by the swing of the swing member 46 is a clamp mechanism.

The disks 45S, 45L are inserted from the insertion opening 51 along the insertion direction 52. A drive roller 53 is provided between the insertion opening 51 and the turntable 44, and the drive roller 53
A sliding guide plate is provided above. The drive roller 53 is rotated by a gear (not shown), and the disc 45S,
45L is guided to the turntable 44 through between the drive roller 53 and the guide plate. The drive roller 53 is supported by a support member 54, and by moving the support member 54 up and down, the drive roller 53 cooperates with a guide plate to drive the disk 45S,
It is brought to an upper position where 45L can be conveyed and a lower position where it is separated from the disks 45S and 45L after insertion.

The lever mechanism that loads the disk 45S, 45L,
Referring to FIG. 1 to FIG. 3, an insertion detection / regulation mechanism 55 provided on the upstream side of the transfer path of the disks 45S, 45L to be inserted near the insertion port 51, and near the turntable 44 on the downstream side of the transfer path. Of the positioning mechanism 56, and a mounting / dismounting continuous mechanism 57 provided on the side of the positioning mechanism 56.

FIG. 6 is an exploded perspective view showing a simplified configuration of the insertion detection / regulation mechanism 55. The insertion detection / regulation mechanism 55 detects the insertion of the disk 45S, 45L from the insertion port 51, and executes the preliminary centering restriction for the subsequent positioning mechanism 56 for each disk 45S, 45L. The insertion detection / regulation mechanism 55 includes a relay lever 58 extending as a longitudinal direction with respect to the direction 52a perpendicular to the insertion direction 52, a longitudinal end portion of the relay lever 58, and a first lever extending along the insertion direction 52. The first guide lever 59a, the second guide lever 59b, and the relay lever
The intermediate lever 60 is provided on the downstream side of the insertion direction 52 with respect to 58 and extends along the insertion direction 52.

The first guide lever 59a is rotatably and pivotally fixed at its center position to a pivot pin 61a hanging from the upper wall portion 41a (see FIG. 3) of the disk reproducing device 41. The first guide lever 5
A pivot stop pin 62a is erected downward at one end in the longitudinal direction of 9a, and the pivot stop pin 62a is passed through a substantially triangular first through hole 63a formed at one end in the longitudinal direction of the relay lever 58. To be done.
At the other end of the first guide lever 59a in the longitudinal direction, a first guide pin 65a, which is a substantially cylindrical first guide piece, is erected downward. In addition, in the substantially triangular shape of the first through hole 63a,
The engaging surface 64a corresponding to the hypotenuse has a pivot pin 61a and a pivot pin 62a.
It is orthogonal to the straight line 10a connecting with.

The other second guide lever 59b also has a structure similar to that of the first guide lever 59a, and the corresponding parts are indicated by the same reference numerals with the subscript b. However, the second guide lever 59b
At one end in the longitudinal direction, the pivot pin 62b is rotatably pivoted, and the pivot pin 62b is erected downward at a substantially central position, and is formed at the other end in the longitudinal direction of the relay lever 58. It is allowed to pass through the triangular second through hole 63b. And second
A second guide pin 65b, which is a second guide piece, is erected downward at the other end of the guide lever 59b in the longitudinal direction. Even in the substantially triangular shape of the second through hole 63b, the engaging surface 64b corresponding to the hypotenuse is orthogonal to the straight line 10b connecting the pivot pin 61b and the pivot pin 62b.

Further, the guide groove 6 along the right angle direction 52a is formed on the relay lever 58.
6a and 66b are formed, the pivot pins 61a and 61b are pivotally fixed, and the spring 67 is wound around the upper wall portion 41a. In this way, the relay lever 58 is slidable along the right angle direction 52a while being biased by the spring toward the first guide lever 59a side.

A spring 68 is also wound between the guide levers 59a and 59b, and the guide pins 65a and 65b forming a pair along the right-angled direction 52a are spring-biased in a direction in which they approach each other. The guide levers 59a, 59b, which are about to be angularly displaced around the pivot pins 61a, 61b by the spring bias, lock the pivot pins 62a, 62b on the inner peripheral edges of the free holes 63a, 63b. As a result, the guide pins 65a and 65b are maintained in a stable state, and the guide pins 65a and 65b are maintained at a preset interval l0. The interval l0 is set smaller than the minimum outer diameter of the inserted disks 45S, 45L.

On the downstream side of the relay lever 58 in the insertion direction 52, an insertion detector 69 is arranged with a pressing piece 70 facing the longitudinal direction of the relay lever 58, and depending on the sliding of the relay lever 58 along the perpendicular direction 52a. The outer peripheral edge 71 along the insertion direction 52 is pressed / separated from the pressing piece 70.

Insertion direction at one end in the longitudinal direction of the relay lever 58
52 At the downstream end, an intermediate lever 60 is rotatably pivoted by a pivoting pin 72, and the intermediate lever 60 is pivotally attached to the upper wall portion 41a by a pivoting pin 73 at a substantially central position. Be stopped. Therefore, in response to the sliding of the relay lever 58 in the perpendicular direction 52a, the intermediate lever 60 pivots around the pivot pin 73,
The contact piece 74 formed at the downstream end of the insertion direction 52 presses and slides the lock lever 75 of the positioning mechanism 56 following the contact piece 74 to interlock the positioning mechanism 56.

Hereinafter, the operation of the insertion detection / regulation mechanism 55 when inserting the disks 45S and 45L will be described with reference to FIG. Seventh
FIG. 1A shows a state before the disks 45S and 45L are inserted. Guide pins 65a, 65b held in close proximity by springs 68
Since the set interval l0 is smaller than the outer diameter of the discs 45S, 45L to be inserted, the outer peripheral edge of the discs 45S, 45L inserted substantially from the center of the insertion port 51 contacts the guide pins 65a, 65b. Contact. Therefore, in response to the insertion of the disks 45S, 45L, both guide pins 65a, 65b are pushed outward by the outer peripheral edge in the radial direction. Therefore, the guide levers 59a and 59b are angularly displaced, and the pivot pins 62a and 62b allow the free holes to pass.
The inner wall surfaces of 63a and 63b are pressed, and the relay lever 58 slides toward the second guide lever 59b. In this way, the insertion detection is performed by releasing the pressing of the pressing piece 70 by the outer peripheral edge 71.

Here, it is assumed that the center line 76 of the small-diameter disk 45S is inserted at the first guide lever 59a side. In this case, the outer peripheral edge of the inserted disk 45S has the first guide pin 6
The first guide lever 59a is angularly displaced by contacting only the 5a.
Therefore, the relay lever 58 slides toward the second guide lever 59b, and the insertion is detected.

On the other hand, the second guide lever 59b does not undergo angular displacement and the relay lever 5b
As the slider 8 slides, the pivot pin 62b that has been allowed to pass through the inside of the second free hole 63b comes into contact with the engagement surface 64b. As described above, since the engaging surface 64b is orthogonal to the straight line 10b of the pivot pin 61b and the pivot pin 62b, the force of pushing the pivot pin 62b when the relay lever 58 tries to slide toward the second guide lever 59b. Acts toward the pivot pin 61b which is the center of rotation of the second guide lever 59b. Therefore, since the relay lever 58 presses the pivot stop pin 62b, the couple force necessary for the angular displacement does not act on the second guide lever 59b. That is, the second guide lever 59b does not undergo angular displacement, the pivot pin 62b engages with the engagement surface 64, and the relay lever 58 stops. Thus, the first guide pin 6 of the first guide lever 59a angularly displaced until the relay lever 58 stops.
5a and the second guide pin 6 of the second guide lever 59b that has stopped
As shown in FIG. 7 (2), the first distance 1 from 5b is set to be equal to or slightly larger than the outer diameter of the disk 45S.

In this way, the disk 45S inserted by pressing only the first guide pin 65a is guided toward the center line 76 by the guide pins 65a and 65b that have stopped moving at the first interval 1. . Thus, while the centering is preliminarily restricted within the displacement amount W1 from the center line 76, the disk 45S
Can be inserted.

In FIG. 7 (3), it is assumed that the disk 45S is inserted in the second guide lever 59b side in a manner symmetrical to the above. Also in this case, similarly to the above, the pressed second guide lever 59b is angularly displaced and the relay lever 58 slides, and the insertion detection is performed. Further, when the second guide lever 59b is angularly displaced and the guide pins 65a and 65b are separated by the first distance 1, the pivot stop pin 62a engages with the engagement surface 64a of the first play hole 63a, and the second guide The lever 59b and the relay lever 58 stop. The disk 45S inserted by pressing only the second guide pin 65b is guided toward the center line 76 as it is further inserted. In this way, the disk 45S can be inserted while the centering is preliminarily restricted within the displacement amount W1 from the center line 76.

Also, depending on the sliding of the relay lever 58, the intermediate lever
A pivoting pin 72, which is one end in the longitudinal direction, is pressed in 60, and the contact piece 74 is angularly displaced around the pivoting stop pin 73 toward the arrow 78.
As a result, the contact piece 74 slightly presses the pressing projection 80, which will be described later, of the lock lever 75 of the positioning mechanism 56. Alternatively, it may not be pressed. That is, the operation of the insertion detection / regulation mechanism 55 due to the insertion of the disk 45S does not interlock with the operation of the positioning mechanism 56 described later.

On the other hand, FIG. 7 (4) shows the case where a large-diameter disk 45L is inserted. In the above case, the outer peripheral edge of the disk 45L contacts both guide pins 65a and 65b, so that both guide levers 59a and 59b are angularly displaced. In this way, the relay lever 58 slides and the insertion is detected. The guide pins 65a and 65b that can be pushed out can be extended to at least the second interval l2 that is at least the outer diameter of the disk 45L.

Further, it is assumed that the disk 45L is inserted into either one separately. In the above case, when the guide pins of one guide lever that is angularly displaced and the guide pin of the other guide lever that is stopped spread to the first gap 1 as in the case where the above-mentioned disc 45S is inserted at a distance, Guide pin 65a,
65b stops moving and the inserted disk 45L is centerline 76
Will be guided to. The first interval 1 is a disk 45.
Since it is shorter than the outer diameter of L, the outer peripheral edge of the guided disk 45L abuts the guide pin of the other guide lever that has stopped. The outer peripheral edge of the abutting disc 45L presses the guide pin outward in the radial direction, and a couple force acts around the pivot pin on the pivot pin that is engaged with the engagement surface. The engagement is released, and the other guide lever that has been pivotally stopped can be angularly displaced. In this way, the guide pins 65a and 65b that have been temporarily stopped at the first gap 1 can be pushed up to the second gap 12 and the disc 45L can be further inserted. Therefore, the disks are separated by
Even if the 45L is inserted, the guide pins 65a and 65b can be inserted by first preliminarily restricting the centering after separating the guide pins 65a and 65b by the first distance 1.

When the disc 45L is inserted and the guide levers 59a and 59b are angularly displaced as described above, the relay lever 58 slides largely and the intermediate lever 60 also largely angularly displaces around the pivot pin 73. When the disk 45L is inserted in this way,
The contact piece 74 of the intermediate lever 60 is a pressing projection piece of the lock lever 75.
80 is pressed and slid to a large degree, and a positioning mechanism 56 described later is interlocked.

In addition, as the discs 45S and 45L are inserted, guide pins 65
When half of the disk 45S, 45L in the insertion direction passes between a and 65b, the chord length of the outer peripheral edge between the guide pins 65a, 65b of the passing disk 45S, 45L becomes equal to or less than the outer diameter. By the spring 68, the guide levers 59a, 59b are again biased toward each other. After that, when the disk 45S, 45L passes, the guide pin 6
5a and 65b are held at the set interval l0.

FIG. 8 is an exploded perspective view showing a simplified structure of the positioning mechanism 56. The positioning mechanism 56 is a disc to be inserted.
The rotation center positions of 45S and 45L are positioned on the turntable 44. The positioning mechanism 56 is located on the upper side of the rocking member 46, and is located at both ends of the lock lever 75 in the longitudinal direction of the lock lever 75, which extends in the direction perpendicular to the insertion direction 52 as a longitudinal direction, and is substantially L-shaped. Pair of stopper levers
82a, 82b, and further, the insertion completion lever 83 located between the stopper levers 82a, 82b and curved and extending in the perpendicular direction 52b.
It is configured to include and. Guide grooves 84a, 84b of the lock lever 75
The pivot levers 85a and 85b, which are erected on the swing member 46, are fitted in the lock levers 75, respectively, so that the lock lever 75 can swing along the right-angled direction 52a.

The bent portion of the one stopper lever 82a is rotatably pivoted to one end of the lock lever 75 in the longitudinal direction by a pivot pin 86a, and the turntable 44 is positioned at the upstream end in the insertion direction 52 with respect to the bent portion. A substantially cylindrical first positioning pin 87a that hangs downward extends vertically through the guide groove 88a of the swing member 46. An engaging pin 89a is provided upright at the end of the bent portion 52a in the direction perpendicular to the bent portion, and a free passage having two engaging recesses 90a and 91a along the insertion direction 52 in the lock lever 75. The engagement pin 89a passes through the hole 92a. A torsion spring 93a is wound between the engagement pin 89a and the locking position 94a of the lock lever 75, and biases the engagement pin 89a in a direction away from the locking position 94a.

The other stopper lever 82b is also the stopper lever 8 described above.
It has the same structure as 2a, and the reference numerals of corresponding parts are shown with the same numerical value with a subscript b. The other stop lever
82b is pivoted by a pivot pin 86b, said pivot pin 86b
With respect to the insertion direction 52, the second positioning pin 87b is provided on the upstream side.
However, the engaging pin 89b is erected near the bent portion in the corresponding vertical direction. The second positioning pin 87b penetrates the guide groove 88b of the swing member 46, and the engagement pin 89b engages with the engagement recess 90.
It passes through a through hole 93b having b and 91b. Also the engagement pin
A torsion spring 93b is wound around the locking position 94b of the lock lever 75 around 89b, and the locking pin 89a and the locking position 94b are urged by a spring in a direction away from each other.

A projecting piece 95a that hangs downward is formed near one end of the lock lever 75 in the longitudinal direction, and can be in contact with a projecting part 96a near the bent portion of the one stopper lever 82a. Further, a protrusion 95b that hangs downward due to a notch is formed near the other end in the longitudinal direction of the lock lever 75, and can be brought into contact with a protrusion 96b at the end of the other stopper lever 82b in the direction 52a at right angles. Further, at the one end in the longitudinal direction of the lock lever 75 and at the upstream end in the insertion direction 52, a pressing projection 80 that bends slightly downward and hangs down is formed, and is located in the middle of the insertion detection / regulation mechanism 55. It faces the contact piece of the lever 60.

The insertion completion lever 83 that detects the completion of insertion of the inserted disks 45S and 45L is formed by a wide body 97 extending along the longitudinal direction of the lock lever 75 and a continuous body while curving from the body 97 in the longitudinal direction. And a clamper fixing piece 160 formed so as to project from the body portion 97 in the direction opposite to the inserting direction 52. The longitudinal direction end of the body portion 97 is located at the substantially center of the insertion completion lever 83 and is located below.
It is rotatably pivoted to 46 by a pivot pin 99, and a spring 100 is wound between the insertion completion lever 83 and the swing member 46. An abutting piece 101 is formed on the free end of the arm portion 98 so as to be directed upward, and an attachment / detachment interlocking mechanism 5 to be described later is provided.
The pressing piece 103 of the trigger lever 102 of 7 is pressed and urged in the insertion direction 52. In this way, the insertion complete lever 83 is stably held around the pivot pin 99 without being angularly displaced while maintaining the balance between the force acting on the spring 100 and the force acting on the contact piece 101.

A pair of drive pieces 104 and 105 are formed downward along the insertion direction 52 at the longitudinal ends of the body portion 97.
In the insertion completion lever 83 that is stably held as described above, one driving piece 104 is positioned slightly inward in the radial direction with respect to the outer peripheral edge of the small-diameter disk 45S that will be mounted on the turntable 44, and swings. It faces downward through the opening 106 of the moving member 46. The other driving piece 105 is a large-diameter disk that will be mounted on the turntable 44 at the insertion lever 83.
It is located slightly inward of the outer peripheral edge of 45L in the radial direction, faces downward through the recess 107 on the outer periphery of the swing member 46, and hangs downward from the one driving piece 104.

Clamper fixing piece 160 formed to project from the body portion 97
Extends along the upper side surface of the swing member 46 located below to the clamper 43 supported by the swing member 46. The clamper fixing piece 160 can approach / separate from the clamper 43 along the upper side surface of the swing member 46 according to the rotation of the insertion completion lever 83 around the pivot pin 99.

The operation of the positioning mechanism 56 when inserting the disks 45S and 45L will be described below with reference to FIG. FIG. 9 (1) shows a state before the disks 45S and 45L are inserted, that is, a state in which the clamper 43 is in the unclamped position. The insertion completion lever 83 is held in a balanced state by the spring 100 and a later-described trigger lever 102 biasing the contact piece 101, and the clamper fixing piece 160 comes close to the clamper 43.
The clamper 43 is interposed between the pressing portion 43a and the locking portion 43c.
Firmly fix.

Therefore, the clamper 43 located in the unclamped position
Does not vibrate undesirably and does not generate an unpleasant sound. Further, since the clamper fixing piece 160 enters the clamper 43 and is fixed along the insertion direction 52, the clamper fixing piece 160 is fixed.
Therefore, it is possible to efficiently secure the loading space 165, which does not urge the lower portion 43 downwardly, and thus does not narrow the loading space 165 where the disks 45S and 45L are provided between the clamper 43 and the turntable 44. it can.

When the small-diameter disk 45S is inserted from the insertion opening 51, the disk is detected by the insertion detection / regulation mechanism 55 as described above.
The 45S is subjected to insertion detection / restriction operation and is brought to the vicinity of the turntable 44. Each stopper lever 82a, 82b
The engagement pins 89a, 89b are engaged with the corresponding engagement recesses 90a, 90b of the corresponding through holes 92a, 92b by springs 93a, 93b,
Therefore, each positioning pin 87a, 87b is a turntable 44.
The disk 45S, which is to be mounted on the disk 45S, is located slightly outward in the radial direction.

Since the intermediate lever 60 of the insertion detection / regulation mechanism 55 is hardly angularly displaced as described above in connection with the insertion of the disk 45S, the pressing protrusion 80 of the lock lever 75 is hardly pressed, and accordingly, each stopper lever 82a, 82b does not rotate, and each positioning pin 87a, 87b does not move. Therefore, the transferred disk 45S has the above-mentioned positioning pins 8
Positioned on the turntable 44 by 7a, 87b.
While being brought onto the turntable 44, as shown in FIG. 8 (2), the outer peripheral edge of the disk 45S presses one driving piece 104 of the insertion completion lever 83, and the insertion completion lever 8
3 is angularly displaced around the pivot pin 99. In this way, the contact piece 101 of the insertion lever 83 causes the pressing piece 10 of the trigger lever 102 to move.
3 is pressed, and thereafter, the attachment / detachment interlocking mechanism 57 described later is interlocked.

The free end portion 163 of the clamper fixing piece 160 is separated from the connecting portion 43b of the clamper 43 according to the angular displacement of the insertion completion lever 83. In this way, the clamper 43, which is released from the fixing by the clamper fixing piece 160 and is in the rotatable state, is brought to the clamp position by the attachment / detachment interlocking mechanism 57, which will be described later, and is mounted on the turntable 44. Clamp 45S.

Next, assume that a large-diameter disk 45L is inserted. When the disk 45L is inserted, the insertion detection / restriction mechanism 55 performs the insertion detection / restriction operation on the disk 45L as described above, and the disk 45L is brought to the vicinity of the turntable 44. Intermediate lever 60 of the insertion detection / regulation mechanism 55
Is greatly angularly displaced in relation to the insertion of the disk 45L,
Therefore, the lock lever 75 against which the pressing protrusion 80 is pressed slides along the longitudinal direction toward one stopper lever 82a side. By the sliding, the engagement of the engagement pins 89a, 89b of the stopper levers 82a, 82b with the engagement recesses 90a, 90b is released.

The disk 45L that has been transported is the small-diameter disk 45S.
It is transported while hanging downwards a little compared to when it is inserted,
As shown in FIG. 8 (3), the outer peripheral edge pushes out the positioning pins 87a, 87b of the stopper levers 82a, 82b. That is, one driving piece 104 is not pressed by the outer peripheral edge. That is, since the insertion completion lever 83 does not rotate, the fixing of the clamper 43 by the clamper fixing piece 160 is maintained. Further, when the disk 45L is conveyed and the positioning pins 87a, 87b are expanded, the engaging pins 89a, 89b of the stopper levers 82a, 82b that rotate and the springs 93a, 93b, respectively.
The distance from the locking positions 94a, 94b at which is locked is close, and at this time, a force for expanding the distance acts by the springs 93a, 93b. Therefore, the stopper levers 82a, 82b further pivot and move until the positioning pins 87a, 87b are respectively positioned slightly outward in the radial direction of the outer peripheral edge of the disk 45L to be mounted on the turntable 44.

When the disk 45L is conveyed up to this point, the regulation operation by the insertion detection / regulation mechanism 55 has been completed, and the pressing piece of the lock lever 75 by the contact piece 74 of the intermediate lever 60 is completed.
The pressure on 80 is also released. As a result, the insertion lever 83
Is slid to the other stopper lever 82b side in the right-angled direction 52a by the springs 93a and 93b, and the engaging pins 89a and 89b and the other engaging recesses 91a and 91b, respectively, as shown in FIG. 8 (4). Engage. In this way, the positioning pins 87a and 87b stop at the position, and the conveyed disk 45L is turned on the turntable 4
4 Position up.

It is brought onto the turntable 44 by the positioning, and the outer peripheral edge of the disk 45L is inserted into the insertion complete lever 83.
The other driving piece 105 is pressed to angularly displace the insertion completion lever 83 around the pivot pin 99. In this way, the pressing piece 103 of the trigger lever 102 is pressed by the contact piece 101 of the insertion completion lever 83, and thereafter, the mounting / separation interlocking mechanism 57 described later is interlocked.

Further, in response to the rotation of the insertion completion lever 83, the clamper 43 is released from being fixed by the clamper fixing piece 160. The clamper 43 in the rotatable state is brought to the clamp position by the attachment / detachment interlocking mechanism 57, which will be described later, and clamps the disk 45L mounted on the turntable 44.

In addition, in order to return the positioning pins 87a and 87b to the initial position for the disk 45S with the ejection of the disk 45L, the disk 45L passes through the insertion detection / regulation mechanism 55 in the opposite operation to the above. Accordingly, when the lock lever 75 slides to one stopper lever 82a side, the protrusions 96a and 96b of the stopper levers 82a and 82b are pressed by the protrusion pieces 95a and 95b, and are biased by the springs 93a and 93b. Can be done. In this way, the engagement pins 89a, 89b are again engaged with the engagement recesses 90a, 90b, and the positioning pins 87a, 87b are returned to their original positions.

FIG. 10 is an exploded perspective view showing a simplified structure of the attachment / detachment interlocking mechanism 57, and FIG. 11 is a side view showing the essential parts of the attachment / detachment interlocking mechanism 57. The attachment / detachment interlocking mechanism 57 interlocks with the disk 45S, 45L brought on the turntable 44 by the positioning mechanism 56, and the clamper 43
And the drive roller 53 is moved. Attachment / detachment interlocking mechanism
57 is a trigger lever 102 extending along the insertion direction 52 across the upper wall portion 41a and the side wall portion 41b, and is located below the trigger lever 102, and is rotatable about an axis line along the perpendicular direction 52a. A gear train 112 centered on the toothless gear 111,
A slide lever 113 located below the gear train 112 and extending along the insertion direction 52, and a slide lever 113.
And a sliding lever 114 located inwardly in parallel with.

The trigger lever 102 has guide holes 115a along the insertion direction 52,
115b is formed, and the mating pins 116a, 11 are erected on the upper wall portion 41a.
6b fit together. Further, the trigger lever 102 has an engaging piece 127 formed along the side wall portion 41b, and the side wall portion 41b
A spring 117 is wound around b. In this way, the trigger lever 102 is spring-biased and slidable along the insertion direction 52. On the inner side of the trigger lever 102, a pressing piece 103 that hangs downward is formed at a position facing the contact piece 101 of the insertion completion lever 83 of the positioning mechanism 56.

The spring force of the spring 117 is slightly stronger than the spring force of the spring 100 that urges the insertion completion lever 83, whereby the insertion completion lever 83 is maintained in a stable balanced position, and the clamper fixing piece 160 is retained. It is possible to intervene and hold the connecting portion 43b of the clamper 43.

The trigger lever 102 is integrally provided with a fork 118 extending along the side wall portion 41b. As shown in detail in FIG. 11, the fork 118 has two legs 119, 120 and a head 121. One leg 119 is provided with a protrusion 122 on the inside. Therefore, fork 118 has two legs 11
Leg gap 123 between 9,120 and recess 124 inside the projection 122.
Then, recesses 125 and 126 are further formed on the left and right of the head 121.

The tooth-chipped gear 111 is rotatably supported on a shaft 128 provided on the side wall portion 41b, a part of its peripheral edge 129 is not provided with teeth, and only a part 130 provided with teeth is provided. Therefore, it meshes with the gear 131 on the drive side, and the power can be transmitted only at that time. Although the gear train on the way is not shown, the drive gear 131 is configured to be decelerated by a motor.

A C-shaped cam 133 is integrally formed on the outer side surface of the partly tooth-missing gear 111, and at least a part of the C-shaped cam 133 is inserted into the leg gap 123 formed in the fork 118 of the trigger lever 102.
Engage the trigger lever 102. Two pin-shaped projections 134 and 135 are provided at predetermined positions on the outer surface of the tooth-chipped gear 111. These protrusions 134 and 135 are the heads of the forks 118.
The recesses 125 and 126 formed on the left and right of the 121 are engaged with each other.

The slide lever 113 is a fitting pin that stands from the side wall portion 41b.
By guiding 136a and 136b through the guide holes 137a and 137b, respectively, they can slide in a direction parallel to the moving direction of the trigger lever 102. A toothless gear 138 having a small diameter is provided on the inner surface of the toothless gear 111, and a part of the tooth thereof is adapted to mesh with a rack 139 provided on a part of the slide lever 113. The slide lever 113 can be moved in the left-right direction in FIG. 3 only when the tooth gear 111 meshes with the drive gear 131.

Further, the slide lever 113 is provided with a slide lever 114 that slides in a direction parallel to the moving direction of the slide lever 113 via a connecting pin 140. The slide lever 114 is provided with a cam groove 142 formed along the insertion direction 52 via a taper surface 141 that is inclined in the up-down direction, and is erected from the slide member 46 that supports the clamper 43. The mating pin 50 is mated.

Accordingly, when the slide lever 113 slides to the right in FIG. 3, the fitting pin 50 is guided by the cam groove 142, and the clamper 43 released from the clamper fixing piece 160 is lowered. , The discs 45S and 45L are clamped on the turntable 44.

Also, in conjunction with the lowering of the clamper 43, the slide lever
By the pin engaging with the cam groove 143 of 113, the disk 45S,
The drive roller 5 for pushing and moving 45L from below.
The support member 54 of 3 rotates to lower the drive roller 53 to a position where it does not interfere with the rotation of the disks 45S and 45L.

The operation of the loading / unloading interlocking mechanism 57 at the time of inserting the disks 45S and 45L will be described below. Disk 45S inserted,
When the insertion completion lever 83 is angularly displaced by the 45L as described above, the trigger lever 102 slides in the direction opposite to the insertion direction 52 against the spring force of the spring 117. When the head 121 of the trigger lever 102 pushes the protrusion 134 in the recess 125 toward the upstream side in the insertion direction 52 (left side in FIG. 11), the toothless portion 129 is removed from the drive gear 131 in the initial state. Since the tooth-missing gear 111, which has not meshed with each other, is rotated to the left by a slight angle, the toothed portion 130 moves to a position where it meshes with the drive gear 131. Gear 131 is a motor with a disk 45S, 4
Since it is decelerated by the same gear train in conjunction with carrying 5 L, when the tooth-chipped gear 111 starts meshing,
Immediately, the tooth-chipped gear 111 is rotated. At this time, almost at the same time, the tooth-chipped gear 138 on the inner surface side of the tooth-chipped gear 111 also starts to mesh with the rack 139, and the tooth-chipped gear 11 is rotationally driven to move the slide lever 113 to the right in FIG. Will be moved.

Prior to this, the trigger lever 102 is moved to move the toothless gear 1
Push the protrusion 134 of 11 and rotate the toothless gear 111 to drive gear
When moved to the meshing position with the 131, one leg 120 of the fork 118 of the trigger lever 102 comes into contact with the rear surface of the C-shaped cam 133 provided on the toothless gear 111, and the movement of the trigger lever 102 is blocked. . This means that the rotation of the insertion completion lever 83 in which the contact piece 101 is restricted by the pressing piece 103 of the trigger lever 102 is stopped at that position, so that the insertion completion lever
Drive pieces 104 and 105 located at the tip of 83 are disks 45S and 45L.
Will act as a positioning piece for. The above-mentioned action cooperates with the positioning pins 87a and 87b to operate the disks 45S and 45L.
Helps to position accurately on turntable 44.

When the tooth-chipped gear 111 is largely rotated, the slide lever 113 and the slide lever 114 are largely moved to the right (see FIG. 3), which causes the disk 45 to move as described above.
The drive roller 53 that has conveyed S, 45L moves down from the disks 45S, 45L by the action of the cam groove 143, and moves down to a position where the clamp 43 presses the disks 45S, 45L by the action of the cam groove 142. Thus, the clamping of the disks 45S, 45L is completed.

After the tooth-chipped gear 111 further rotates and the rear surface of the C-shaped cam 133 separates from the leg portion 120 of the fork 118 of the trigger lever 102, the trigger lever 102 becomes movable. At this time, the protrusion 135 provided on the outer surface of the tooth-chipped gear 111 comes into contact with the rotating head portion 121 of the trigger lever 102, thereby pushing the trigger lever 102 to the left (see FIG. 3). The trigger lever 102 and the insertion completion lever 83 are moved again to separate the drive pieces 104, 105 from the outer peripheral edges of the clamped disks 45S, 45L. In this way, the disks 45S, 45L are freely rotated on the turntable without being restricted by the drive pieces 104, 105 of the insertion completion lever 83, whereby the insertion process of the disks 45S, 45L is completed.

The above-mentioned insertion detection / regulation mechanism 55 to attachment / detachment interlocking mechanism 57
The operation of is the operation at the time of inserting the disk 45S, 45L, and at the time of the step of removing the disk 45S, 45L from the turntable 44 and discharging it from the insertion opening 51 by the drive roller 53, The operation opposite to the above will be sequentially executed.

In the present embodiment, the clamper fixing means is described with reference to a structure in which the clamper is fixed by interposing the swinging member between the locking portion and the pressing portion of the clamper to fix the clamper. Other configurations may be used as long as the configuration does not push down.

Therefore, according to the above-described embodiments, only by providing the clamp fixing piece from the insertion completion lever toward the clamp,
The clamper in the unclamped position can be firmly fixed. Therefore, generation of unpleasant noise due to undesired vibration of the clamper can be reliably eliminated. Also,
Since the clamper fixing piece abuts and fixes the clamper from the side along a substantially horizontal plane along the insertion direction, the clamper is not pushed down toward the lower side where the turntable is arranged. Therefore, it is possible to efficiently secure the loading space for the disk between the clamper and the turntable without narrowing the loading space.

According to the present invention, since the clamper fixing means having a simple structure is provided only on the lever piece which is rotated by the disk-shaped body brought to the turntable, the clamper in the unclamped position is not damaged. Desired vibration can be reliably eliminated.

Further, the clamper fixing means presses and fixes the clamper from the side portion and does not push down the clamper to the lower side where the turntable is provided. Therefore, the loading space where the disk-shaped body is brought is not narrowed, and the space is maintained. Can be effectively secured.

[Brief description of drawings]

FIG. 1 is a plan view showing the structure of the lever mechanism in this embodiment, and FIG. 2 is a plan view showing the inside of the disk reproducing device 41.
3 is a side view showing the lever mechanism, FIG. 4 is a side view showing the inside of the disk reproducing device 41 in a non-mounted state, and FIG. 5 is a side view showing the inside of the disk reproducing device 41 in a mounted state.
6 is an exploded perspective view showing a simplified configuration of the insertion detection / regulation mechanism 55, FIG. 7 is a diagram for explaining the insertion detection / regulation operation, and FIG. 8 is a simplified configuration of the positioning mechanism 56. FIG. 9 is an exploded perspective view showing the positioning operation, FIG. 10 is an exploded perspective view showing a simplified structure of the attachment / detachment interlocking mechanism 57, and FIG. FIG. 12 is a side view showing the essential parts, and FIG. 12 is a side view showing the structure of the conventional clamp mechanism 2. 41 …… Disk playback device, 43 …… Clamper, 43a …… Pressing part, 43b …… Coupling part, 43c …… Locking part, 44 …… Turntable, 45S, 45L …… Compact disk, 52 …… Insertion direction , 56 …… Positioning mechanism, 83 …… Insertion complete lever, 99 ……
Pivot pin, 100 ... Spring, 104,105 ... Drive piece, 160 ...
Clamper fixing piece, 163 …… Free end, 165 …… Loading space

Claims (1)

[Scope of utility model registration request] 1. A clamp mechanism for clamping a disk-shaped body on the turntable by a clamper supported by a swing member swinging with respect to the turntable, the clamp mechanism being provided near the turntable. The outer peripheral edge of the disk-shaped body brought above is provided with a lever piece that is rotated by pressing a standing drive piece, and protrudes from the lever piece toward the clamper.
When the drive piece is not pressed by the outer peripheral edge, the clamper is firmly fixed on the swing member in the vicinity of the clamper, and when the drive piece is pressed by the outer peripheral edge, the clamper is separated from the clamper according to the rotation of the lever piece. A clamp mechanism including: a clamper fixing means.