JP2880414B2 - Loading device for disk-shaped recording media - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a loading device for a disk-shaped recording medium such as a compact disk.

[0002]

2. Description of the Related Art FIG. 7 is a side view schematically showing the structure of a disk-shaped recording medium loading apparatus 1 according to a first prior art, and FIG. 8 is a plan view thereof. The loading device 1 includes a guide lever 6 that supports the gears 2 and 3, the roller gear 4, and the swing gear 5, a motor 7, a fixed rack 8, a slide lever 9, and a link lever 11. Is done.

[0003] The guide lever 6 is provided so as to be swingable around a rotation shaft 6a. A transport roller that rotates integrally with the roller gear 4 and transports a compact disk (hereinafter referred to as a CD) 13 is attached to the rotation shaft 4 a of the roller gear 4. Swing gear 5 meshing with roller gear 4
Is supported by a shaft supporting member 10 provided to be swingable around the rotating shaft 4a, and is a planetary gear. The rotation shaft 5 a of the swing gear 5 projects toward the slide lever 9, that is, in a direction perpendicular to the paper surface of FIG. 7, and can engage with an engagement claw 9 a provided on the slide lever 9.

The slide lever 9 is slidably provided in the insertion direction A in which the CD 13 is inserted. The slide lever 9 is provided at one end of the link lever 11 at the downstream end of the slide lever 9 in the insertion direction A. Elongated hole 9 to be engaged with pin 11c
b is provided. The link lever 11 is provided so as to be swingable around a swing shaft 11a.
At the other end, that is, at the end opposite to the side on which the pin 11c is provided, the CD 1 transported by the transport roller described above.
3 is provided with a pin 11b with which the pin 3 contacts. Link lever 1
1 is urged by a tension spring 12 in a direction opposite to the swing direction B.

[0005] When the insertion of the CD 13 into the loading device 1 by the operator is detected by an optical sensor or the like provided near the insertion opening of the CD 13, the motor 7 is driven. The power of the motor 7 is transmitted to the roller gear 4 via the gears 2 and 3, the roller gear 4 is driven to rotate in the rotation direction C, and the CD 13 is transported in the insertion direction A by the transport roller that rotates integrally with the roller gear 4. Is done.

When the CD 13 is transported to the state shown in FIG. 8, the pin 11b of the link lever 11 comes into contact with the CD 13, and the link lever 11 swings in the swing direction B with the transport of the CD 13. With the swing of the link lever 11, the slide lever 9 slides in the direction opposite to the insertion direction A, and when the CD 13 is transported to a predetermined position by the transport roller, the engaging claw provided on the slide lever 9 is provided. 9
a is disengaged from the rotary shaft 5a.

When the engagement between the engaging claw 9a and the rotary shaft 5a is released, the downstream end of the guide lever 6 in the insertion direction A is spring-biased downward in FIG. The downstream end in the insertion direction A in which the swing gear 5 is provided swings downward, and the small-diameter tooth portion of the swing gear 5 rotates in the rotation direction D with the rotation of the roller gear 4 in the rotation direction C. 5b and the fixed rack 8 mesh with each other.

When the swing gear 5 and the fixed rack 8 mesh with each other, the swing gear 5 moves in the displacement direction E while rotating along the fixed rack 8, and accordingly, the guide lever 6 is inserted in the downstream side in the insertion direction A. The end swings downward in FIG. 7 around the rotation shaft 6a, and the transport roller is separated from the CD 13 to complete the loading operation.

A second prior art (Japanese Patent Application Laid-Open No. 60-23196)
5 and JP-A-3-248467), similarly to the above-mentioned prior art, a guide gear rotatably supported by a shaft is provided with a roller gear rotating integrally with a transport roller, and is rotationally driven via the roller gear. A swing gear is provided, and the guide lever swings when the swing gear meshes with the rack, and the transport roller is separated from the CD.

[0010]

In the above-mentioned first prior art, the rocking gear is provided downstream of the roller gear 4 in the insertion direction A, that is, at a position farther from the rotary shaft 6a than the roller gear 4. 5 and the fixed rack 8, the guide lever 6 is swung, so that the displacement distance of the swing gear 5 is smaller than the displacement distance of the roller gear 4 rotating integrally with the transport roller in the vertical direction in FIG. In addition, the length of the fixed rack 8 increases. As a result, a large installation space for providing the swing gear 5 and the fixed rack 8 is required, which hinders downsizing of the loading device 1.

Further, since the guide lever 6 is swung by the fixed rack 8 provided outside the roller gear 4, that is, on the downstream side in the insertion direction A, the swing gear rotating in the direction opposite to the rotation direction of the roller gear 4. 5 is required, resulting in an increase in the number of parts and an increase in the cost of the loading device 1.

Also, the second prior art described above has the same problem as the first prior art.

An object of the present invention is to provide a loading device for a disk-shaped recording medium capable of saving space and reducing the number of components.

[0014]

According to the present invention, there is provided a disk for loading a disk-shaped recording medium inserted from an insertion slot to a predetermined loading position by a roller to which a driving force from a loading motor is transmitted via a transmission gear. In the loading device for a disk-shaped recording medium, when the disk-shaped recording medium is conveyed to the loading position, a detecting member that is displaced when the disk-shaped recording medium comes into contact with the leading end side of the disk-shaped recording medium, and is swingably supported by the housing. , The transmission gear is mounted,
One end supports the roller, and the guide lever is spring-biased by a first spring in a direction in which the roller is pressed against the disk-shaped recording medium. A rack, which is freely supported and is formed on the outer peripheral surface and is opposed to the roller gear provided coaxially with the roller and meshing with the transmission gear, is formed by a second spring in a direction in which the rack meshes with the roller gear. When the disc-shaped recording medium reaches the loading position and the detection member is displaced, the locked state is released and the disc is rocked, and the rack is meshed with the roller gear. A lever and a stopper that stands upright on the housing and stops the swinging displacement of the swinging lever when the swinging rack of the swinging lever meshes with the roller gear; A drive pin is formed on one of the guide members, and a guide slope on which the drive pin abuts is formed on the other of the detection member and the guide lever. 1
In response to the spring force of the spring of the above, the roller is oscillatingly displaced with the rotation of the roller gear, the roller is separated from the disk-shaped recording medium, and the drive pin is displaced on the guide slope so that the detecting member is displaced. A loading device for a disk-shaped recording medium, which is further displaced in an insertion direction of the disk-shaped recording medium. Further, according to the present invention, at least a driving mechanism of the disc-shaped recording medium and an optical system for reading information recorded on the disc-shaped recording medium are floating supported by a housing via a buffer member, and are driven by the guide lever. When the guide lever presses the roller against the disk-shaped recording medium, the drive mechanism and the optical system are held and fixed, and when the guide lever separates the roller from the disk-shaped recording medium, the drive mechanism and the optical system are moved. It is characterized by having a lock lever to be in a floating state. Further, in the present invention, a door that closes at least a part of the insertion opening in a reproduction state of the disc-shaped recording medium in which the guide lever has separated the roller from the disc-shaped recording medium is integrated with the other end of the guide lever. Is provided.

[0015]

According to the present invention, when the insertion of the disc-shaped recording medium from the insertion slot by the operator into the disc-shaped recording medium loading device is detected by an optical sensor or the like provided near the insertion slot, The driving of the loading motor is started, the driving force of the loading motor is transmitted to the roller via the transmission gear and the roller gear, and the roller is driven to rotate in the direction of transporting the disk-shaped recording medium in the insertion direction.

At this time, since the guide lever supporting the roller is spring-biased by the first spring in a direction in which the roller is pressed against the disk-shaped recording medium, the inserted disk-shaped recording medium is inserted by the roller. When the recording medium is transported to the predetermined loading position, the leading end side of the disk-shaped recording medium, that is, the downstream side in the insertion direction comes into contact with the detection member. Although the detection member is constituted by the link lever 36 and the slide lever 30 in an embodiment described later, in another embodiment of the present invention, the detection member may have an integrated structure in which the link lever 36 and the slide lever 30 are combined. Often, the present invention includes such a structure.

The disc-shaped recording medium contacts the detection member,
When the detection member is displaced and driven by the trigger,
The locked state of the rocking lever locked by the detection member, that is, the state in which the rack of the rocking lever is separated from the roller gear against the spring force of the second spring is released, and the rocking lever is released. Oscillating displacement is caused by spring force. When the swing lever swings, the rack meshes with the roller gear, and the swing displacement of the swing lever is prevented by the stopper.

Here, the swing lever is arranged such that a rack provided on the outer peripheral surface of the swing lever meshes with the roller gear.
That is, the rack is provided so as to mesh with the roller gear from the swing center side of the guide lever, and in a state where the swing displacement of the swing lever is prevented by the stopper, the rack is centered on the swing center of the guide lever. It becomes a state along the perfect circle.

When the rack of the rocking lever and the roller gear mesh with each other, the guide lever is rocked and displaced by the rotation of the roller gear against the spring force of the first spring, so that the roller has a disk shape. As it is separated from the recording medium, a drive pin formed on one of the detection member and the guide lever is displaced on a guide slope formed on the other of the detection member and the guide lever, and the detection member is moved. Further displaced in the insertion direction of the disc-shaped recording medium,
The detecting member is separated from the disk-shaped recording medium, and the loading operation of the disk-shaped recording medium is completed.

At this time, since the disk-shaped recording medium is separated from the rollers and the detecting member, the disk-shaped recording medium is in a rotatable state, and the information recorded on the disk-shaped recording medium can be reproduced. ing.

Therefore, the swing lever for swinging the guide lever in the direction in which the roller provided on the guide lever separates from the disk-shaped recording medium is arranged such that the rack meshes with the roller gear from the swing center side of the guide lever. As compared with a conventional configuration in which a swing gear is provided further outside the roller gear and the swing gear and the rack are meshed with each other, a roller on the side where the roller of the guide lever is provided is provided. The displacement width of one end and the length of the rack along the swinging direction of the roller gear can be reduced. As a result, it is possible to realize space saving in a portion where the one end portion of the guide lever and the rack portion of the swing lever are provided.

Further, since the rack of the swing lever directly meshes with the roller gear, the swing gear provided outside the conventional roller gear is not required, so that the number of parts can be reduced.

Preferably, at least a drive mechanism of the disk-shaped recording medium and an optical system for reading information recorded on the disk-shaped recording medium are floatingly supported on a housing via a buffer member. The roller is driven by a guide lever that is swingably displaced in a direction of pressing against or separating from the disk-shaped recording medium, and holds the drive mechanism and the optical system in a state where the guide lever is pressing the roller against the disk-shaped recording medium. When the guide lever is fixed and the roller is separated from the disk-shaped recording medium, a lock lever is provided to bring the drive mechanism and the optical system into a floating state.

Therefore, the lock lever that holds the drive mechanism and the optical system in a fixed or floating state is
Since the lock lever is driven by the guide lever, no special driving means for driving the lock lever is required, so that the configuration can be simplified.

More preferably, the other end of the guide lever swings in accordance with the swing displacement of the guide lever, and the guide lever moves the roller away from the disk-like recording medium. Then, a door for closing at least a part of the insertion port is provided.

Therefore, since the guide lever is provided with the door, it is possible to prevent double loading of the disk-shaped recording medium in which another disk-shaped recording medium is loaded while the disk-shaped recording medium is loaded. be able to. Further, since the door is provided on the guide lever, the insertion opening is opened and closed in accordance with the swing displacement of the guide lever. As a result, a special driving means for driving the door for opening and closing the insertion opening is provided. Since it is not necessary, it can be realized with a simple configuration.

[0027]

FIG. 1 is a simplified side view showing the configuration of a CD player 21 according to an embodiment of the present invention, showing a state where no CD is loaded. FIG. 2 shows a CD player 21.
2 is a simplified plan view showing a state in which a CD 38 is being loaded. FIG. FIG. 3 is a simplified side view showing the configuration of the CD player 21 and shows a state where the loading of the CD 38 is completed. FIG. 4 is a simplified plan view showing the configuration of the CD player 21 and shows a state where the loading of the CD 38 is completed.

The CD player 21 generally includes a swing lever 25, a guide lever 27 having gears 22 and 23, a roller gear 24 and a transport roller 26, a loading motor 28, a drive lever 29, and a slide lever 30.
, A clamp arm 31, a drive lever 33, a lock lever 34, a link lever 36, a floating unit 37, and a housing 41.

The guide lever 27 includes a top plate 27a and both side plates 27b and 27c. Guide lever 2
7, one of the side plates 27b is provided with gears 22 and 23 and a roller gear 24, and the conveying roller 26 is supported by both side plates 27b and 27c. The guide lever 27 is swingable about a rotation shaft 27d. The gear 22 and the swing lever 25 are also supported by the rotating shaft 27d. The large-diameter tooth portion of the gear 22 meshes with a gear 28 a mounted on a loading motor 28 mounted on the housing 41.

The small-diameter tooth portion of the gear 22 meshes with the large-diameter tooth portion of the gear 23, and the small-diameter tooth portion of the gear 23 is a roller gear 24.
Meshes with the large-diameter tooth portion. The small-diameter tooth portion 24a of the roller gear 24 can mesh with a rack 25a of a swing lever 25 described later. The roller gear 24 is provided for the transport roller 2.
6 and is fixed to the same rotation shaft 26 a, and rotates integrally with the transport roller 26.

The swing lever 25 having the rack 25a and the pin 25b is biased by a spring (not shown) in the swing direction I. The swing of the swing lever 25 in the swing direction I by the spring is The locking lever 25 is stopped when the pin 25b abuts on an engagement projection 30a provided on the slide lever 30 described later, or when the swing lever 25 abuts on a stopper 42 attached to the housing 41. Swing lever 2
The rack 25a provided on the outer peripheral surface of the rotary shaft 5 has a rotating shaft 27d.
And the length of the rack 25a along the arc is set to a predetermined length. As shown in FIGS. 1 and 3, the pin 2 is viewed from the rotation shaft 27d.
When the rack 5b is located substantially upward, the rack 25a
8 is provided on the downstream side in the insertion direction H.

Two pins 27e and 27f are provided at a downstream end of the side plate 27b of the guide lever 27 in the insertion direction H, and a pin 27g is provided at an upstream end of the guide lever 27 in the insertion direction H. The end of the guide lever 27 on the upstream side in the insertion direction H of the top plate 27a is bent upward in FIGS. 1 and 3 to form a door 27h.

The gear 23 is provided downstream of the gear 22 in the insertion direction H, and the roller gear 24 is provided downstream of the gear 23 in the insertion direction H. The pins 27e and 27f are the roller gears 24.
The pin 27g is provided on the downstream side in the insertion direction H of the
7d is provided on the upstream side in the insertion direction H.

The guide lever 27 thus configured
The transport roller 26 is provided at the upstream end of the housing 41 in the insertion direction H so that the transport roller 26 contacts the CD 38 from below in FIG. Since the guide lever 27 is swingable about the rotation shaft 27d, the transport roller 26 can be pressed against or separated from the CD 38. In the state shown in FIGS. 1 and 2, the transport roller 26 can be pressed against the CD 38, and in the state shown in FIGS. 3 and 4, the transport roller 26 is separated from the CD 38. I have.

The guide lever 27 has one end fixed to a drive lever 33 and the other end fixed to a drive lever 33. In the state shown in FIG. In the state shown in FIG. 3, the guide lever 27 is spring-biased in a direction in which the transport roller 26 is separated from the CD 38. The biasing of the guide lever 27 in the vertical direction in FIGS. 1 and 3 by the winding spring 32 is not illustrated so that the downstream end of the guide lever 27 in the insertion direction H is not displaced in the vertical direction beyond a predetermined position. Stopped by the stopper.

The slide lever 30 having an elongated shape along the insertion direction H is provided so as to be slidable in the insertion direction H. At the end of the slide lever 30 on the upstream side in the insertion direction H,
Engagement protrusion 30a that engages with pin 25b of swing lever 25
And an engagement recess 30b that engages with a pin 29a provided on the drive lever 29 described later. A link lever 36 is provided at the downstream end of the slide lever 30 in the insertion direction H.
Is provided with a long hole 30c that engages with the pin 36a provided in the first hole. The detection member according to claim 1 is a slide lever 3
When the disk-shaped recording medium is transported to the loading position, the disk-shaped recording medium is displaced when it comes into contact with the leading end side of the disk-shaped recording medium.

The link lever 36 having a longitudinal shape is provided along a direction substantially perpendicular to the insertion direction H so as to be swingable about a swing shaft 36b. One end of the link lever 36 is provided with a pin 36a that engages with the long hole 30c of the slide lever 30, and the other end is provided with a pin 36c with which the front end of the CD 38 abuts. Link lever 36
The end on the side where the pin 36a is provided is a tension spring 40
2, whereby the link lever 36 is urged in the direction of swinging in the direction opposite to the swinging direction J. Therefore, the slide lever 30 is urged by the tension spring 40 in the direction of sliding in the insertion direction H via the link lever 36.

When the CD player 21 is not loaded with the CD 38, the slide lever 30 comes into contact with a stopper (not shown), and the tension spring 40 urges the slide lever 30 in the insertion direction H and swings the link lever 36. Displacement of a predetermined amount or more in the direction opposite to the direction J is prevented.

The drive lever 29 provided to be swingable around the swing shaft 29b has a pin 29a which engages with the engagement recess 30b of the slide lever 30, and a guide slope which comes into contact with the pin 27g of the guide lever 27. 29d.

The drive lever 33 for sliding the lock lever 34 in the insertion direction H has two engagement recesses 33a,
33b and a pin 33c are provided. Drive lever 33
Is provided so as to be swingable around the swing shaft 33d. The drive lever 33 is biased by the winding spring 32 in a direction in which the drive lever 33 swings in the swing direction K. The swing in the swing direction K by the spring is performed by the inner wall 33 that defines the engagement recess 33a.
e is stopped by contacting the pin 27e of the guide lever 27.

The engagement recess 33a of the drive lever 33 can be engaged with the pin 27e of the guide lever 27, and the engagement recess 33b is connected to a floating unit 37 described later.
Fixed shaft 39a on the upstream side in the insertion direction H provided for
And can be engaged. The pin 33c is engaged with a long hole 34a provided in the lock lever 34.

The lock lever 34 slidably provided in the insertion direction H includes a long hole 34a which engages with the pin 33c of the drive lever 33, and one side of the floating unit 37 which is provided on the upstream side in the insertion direction H. An engaging hole 34b for fixing the fixed shaft 39a of the floating unit 37, and an engaging recess opening on the downstream side in the insertion direction H for fixing the one fixed shaft 39b on the downstream side in the insertion direction H provided in the floating unit 37. 34c.

When the CD 38 as shown in FIG. 1 is not loaded in the CD player 21, the fixed shaft 39a of the floating unit 37 is inserted into the engagement recess 33b of the drive lever 33 and the engagement hole 34b of the lock lever 34. The fixed shaft 39b is engaged with the engaging recess 34c. The engagement recess 33b prevents the floating unit 37 from being displaced in a direction parallel to the insertion direction H.
4b and the engagement recess 34c prevent the floating unit 37 from being displaced in the vertical direction in FIG.

When the loading of the CD 38 into the CD player 21 as shown in FIG. 3 is completed, the drive lever 33 swings in the swing direction K from the state shown in FIG. 34 is slid in the direction opposite to the insertion direction H, and the fixed shaft 39a is disengaged from the engaging recess 33b and the engaging hole 34b, and the fixed shaft 39b is disengaged from the engaging recess 34c. The floating unit 37 is in a floating state in which it can be displaced vertically and horizontally in FIG. In this floating state, vibrations and shocks are absorbed by dampers 46 and 47 to be described later, and information recorded on the CD 38 can be stably reproduced.

The clamp arm 31 is
The end of the clamp arm 31 on the downstream side in the insertion direction H can be moved closer to or away from the CD 38. The clamp arm 31 has a CD 38 mounted on a turntable 43 provided in the floating unit 37.
Is provided on the turntable 43 with a clamper (not shown).

The clamp arm 31 is
1 is biased by a spring (not shown) in a direction approaching the CD 38. In the state shown in FIG. 1, the arm 31a of the clamp arm 31 contacts the pin 27f of the guide lever 27, and The displacement of the arm 31 in the direction approaching the CD 38 is prevented, and the clamper and the turntable 43 are separated from each other. In the state shown in FIG. 3, the CD 38 is held between the turntable 43 and the clamper.

FIG. 5 is a bottom view showing the structure of the floating unit 37. Floating unit 37
Are a frame 49, a turntable 43, a pickup 48, a motor 50 for moving the pickup 48 in the radial direction of the CD 38, four dampers 46, and four fixed shafts 39a, 39b attached to the dampers 46.
39 c and 39 d and three dampers 47.

The damper 46 is for absorbing vibration in the horizontal direction in FIG. 5, that is, in the horizontal direction in FIG. The damper 47 is for absorbing vibration in a direction perpendicular to the plane of FIG. 5, that is, in a vertical direction in FIG. 1.

FIG. 6 is a diagram showing the operation of the CD player 21 when the CD 38 is loaded. As shown in FIG. 1, in a state before the CD 38 is inserted into the CD player 21, the slide lever 30 is slid to the downstream side in the insertion direction H, and the rocking lever is engaged with the engagement protrusion 30a of the slide lever 30a. The 25 pins 25b are in contact with each other, and the rack 25a is separated from the small-diameter teeth portion 24a of the roller gear 24 downward in FIG. In the state shown in FIG. 1, the door 27 h at the end of the guide lever 27 on the upstream side in the insertion direction H is displaced downward in FIG. 1, and the CD insertion slot (not shown) provided in the housing 41 is opened.

In the state shown in FIG. 1, when the operator inserts the CD 38 in the insertion direction H from the CD insertion slot provided in the housing 41, the insertion of the CD 38 is detected by an optical sensor (not shown) or the like, and the roller gear 24 is inserted. The loading motor 28 is driven in a direction in which the rotation is performed in the rotation direction L. When the loading motor 28 is driven in this manner, the transport roller 26 integrated with the roller gear 24 is rotated, and the inserted CD 38 is transported downstream by the transport roller 26 in the insertion direction H.

As shown in FIG. 2, the conveyed CD 38 comes into contact with the pin 36c of the link lever 36, and the CD 38
8 is transported downstream in the insertion direction H, the link lever 36 is pivoted in the pivoting direction J with the transport of the CD 38,
The slide lever 30 is slid in the direction opposite to the insertion direction H, and the state shown in FIG.

In the state shown in FIG. 6A, as the slide lever 30 slides in the direction opposite to the insertion direction H, the swing lever 25 urged in the swing direction I by the spring is moved. , The small-diameter tooth portion 24a of the roller gear 24 and the guide lever 25 that rotate in the rotation direction L at the same time as swinging in the swing direction I, which has been blocked by the pin 25b and the engagement projection 30a, come into contact with the stopper 42. With the rack 25a.

Further, with the sliding of the slide lever 30,
The drive lever 29 swings about the swing shaft 29b, and the guide slope 29d moves in the direction opposite to the insertion direction H. Accordingly, in the state of FIG.
Can be brought into contact with the pin 27g of the guide lever 27.

The state of FIG.
When the roller 4 is rotated, the roller gear 24 meshes with the rack 25a of the swing lever 25, so that the roller gear 24 moves downward with respect to the rack 25a of the swing lever 25 in FIG. The guide lever 27 is swung in the direction opposite to the swing direction I, and the state shown in FIG.
In the state of FIG. 6B, the transport roller 26 is a CD 38
Have been separated from.

With the swing of the guide lever 27, the pins 27e and 27f of the guide lever 27 move downward in FIG. 6B, and the clamp arm 31 abutting on the pin 27f moves as shown in FIG. Swing down. Further, the pin 27e is connected to the inner wall 3 of the engagement recess 33a of the drive lever 33.
6 (2), the drive lever 33 swings in the swing direction K. As the swing lever 33 swings in the swing direction K, the lock lever 34
Is displaced in the direction opposite to the insertion direction H.

The state of FIG.
When the guide lever 27 is swung in the direction opposite to the swing direction I when the guide lever 27 is rotated, the pin 27g of the guide lever 27 comes into contact with the guide slope 29d of the drive lever 29, as shown in FIG. Becomes In the state shown in FIG. 6C, the winding spring 32 presses the guide lever 27 in the direction opposite to the swing direction I.
It is stable without rattling in the state of contact with d.

6C, the pin 27f of the guide lever 27 is separated from the clamp arm 31, and the clamper of the clamp arm 31 presses the CD 38 against the turntable 43.

When the guide lever 27 is further swung in the direction opposite to the swing direction I from the state shown in FIG. 6C, the pin 27g of the guide lever 27 pushes the drive lever 29 in the insertion direction H.
6 (3) on the guide slope 29d of the drive lever 29 while pressing in the direction opposite to the direction shown in FIG. The upper end in 3) is swung.

When the drive lever 29 is further swung in this manner, the slide lever 30 is slid in the direction opposite to the insertion direction H, and the link lever 36 is swung in the swing direction J, and the link lever 36 is swung. Pin 36c is separated from the CD 38, and the state shown in FIGS. 3 and 4 is obtained.

The guide lever 2 is moved up to the state shown in FIGS.
7, the contact portion 34d of the lock lever 34, which is slid in the direction opposite to the insertion direction H via the drive lever 33 with the swing of the guide lever 27, comes into contact with the detection piece 35a of the switch 35. The switch 35 detects that the loading of the CD 38 into the CD player 21 is completed, and the loading motor 28 is stopped.

In the state of FIG. 3 and FIG.
In order to prevent double loading on the D player 21, the housing 41
The CD insertion slot (not shown) provided in the
7 is closed by a door 27h. In this state, the guide lever 27 is urged by the winding spring 32 in a direction opposite to the swing direction I.

In the state shown in FIGS. 3 and 4, the transport roller 26 and the pin 36c of the link lever 36 are separated from the CD 38 held between the turntable 43 provided on the floating unit 37 and the clamper provided on the clamp arm 31. CD38
Is rotatable, and the information recorded on the CD 38 can be reproduced.

Next, the operation of discharging the loaded CD 38 will be described. The ejection operation of the CD 38 is started by pressing an ejection button (not shown) provided on a front plate or the like of the housing 41 provided with a CD insertion slot. When the discharging operation is started, the loading motor 28 is driven in a direction for rotating the roller gear 24 in a direction opposite to the rotation direction L.

The roller gear 24 from the state shown in FIGS.
Is rotated in the direction opposite to the rotation direction L, the guide lever 27 is swung in the swing direction I, and the transport roller 26 is moved to the CD 38 through the state shown in FIG. 6C and the state shown in FIG. The state shown in FIG. 6A is reached.

In the state of FIG. 6A, the guide lever 27
The pin 27g is separated from the guide slope 29d of the drive lever 29, and the link lever 36 is
0, the pin 36c is swung from the state shown in FIG. 4 in the direction opposite to the swing direction J until the pin 36c abuts on the CD 38. Accordingly, the slide lever 30 is also moved from the state shown in FIG. 6 (1) is slid in the insertion direction H.

The state shown in FIG.
When the CD 4 is rotated in the direction opposite to the rotation direction L, the conveyance of the CD 38 by the conveyance roller 26 in the direction opposite to the insertion direction H is started.
6 swings in the direction opposite to the swinging direction J by the urging of the tension spring 40, and the engaging projection 30a of the slide lever 30 moves the pin 25b of the swinging lever 25 in the insertion direction H.
Press to move. As a result, the swing lever 25 swings in the direction opposite to the swing direction I to be in the state shown in FIG.

The loading motor 28 is stopped when the completion of the ejection of the CD 38 from the CD insertion slot is detected by the optical sensor.

Therefore, the swing lever 25 for swinging and displacing the guide lever 27 in the direction in which the conveying roller 26 provided on the guide lever 27 separates from the CD 38.
Since the rack 25a is provided so as to mesh with the roller gear 24 from the side of the rotation shaft 27d which is the center of swing of the guide lever 27, a swing gear is provided further outside the conventional roller gear. As compared with the configuration in which the swing gear and the rack are meshed with each other, the displacement width of the end of the guide lever 27 on the side where the transport roller 26 is provided, and the length of the rack 25 a along the swing direction of the roller gear 24. Can be shortened. As a result, the end of the guide lever 27 on the side where the transport roller 26 is provided and the swing lever 2
The space saving of the portion provided with the fifth rack 25a can be realized.

Further, since the rack 25a of the swing lever 25 directly meshes with the roller gear 24, no swing gear provided outside the conventional roller gear is required, so that the number of parts can be reduced.

Further, the link lever 36 is separated from the CD 38 in accordance with the swinging displacement of the guide lever 27 in the direction in which the transport roller 26 is separated from the CD 38, so that the link lever 36 is separated from the CD 38. Since no special driving means is required, the configuration can be simplified.

The drive lever 33 and the lock lever 34 for holding and fixing or floating the floating unit 37 are driven by the guide lever 27.
Since no special driving means is required, the configuration can be simplified.

Further, the guide lever 27 has a door 27.
h is provided, so that C shown in FIG. 3 and FIG.
With D38 loaded, double loading of a CD on which another CD is loaded can be prevented. Door 2
Since the guide lever 27 is provided on the guide lever 27, the CD insertion slot is opened and closed in accordance with the swing displacement of the guide lever 27, and as a result, a special driving means for driving the door for opening and closing the CD insertion slot is provided. Is not required, so that the configuration can be simplified.

In the above embodiment, the guide lever 2
7 is provided with a pin 27g, and a drive lever 29 is provided with a guide slope 29.
Although d is provided, the guide lever 27 may be provided with a guide slope and the drive lever 29 may be provided with a pin.

The swing lever 25 and the slide lever 3
Although the 0, the drive lever 33, and the lock lever 34 are provided in the housing 41 so as to be located on the right side of the CD 38 when viewed from the upstream side in the insertion direction H, they may be provided on the left side of the CD 38.

[0075]

As described above, according to the present invention, the swing lever for swinging the guide lever is provided so that the rack meshes with the roller gear from the swing center side of the guide lever. The displacement width of one end of the guide lever on the side where the roller is provided and the length of the rack along the swinging direction of the roller gear can be reduced as compared with the related art. As a result, it is possible to realize space saving in a portion where the one end portion of the guide lever and the rack portion of the swing lever are provided.

Further, since the rack of the swing lever directly meshes with the roller gear, the number of parts can be reduced as compared with the related art.

Further, according to the present invention, since the lock lever for holding and fixing or floating the drive mechanism and the optical system is driven by the guide lever, no special drive means for driving the lock lever is required. Can be simplified.

Further, according to the present invention, since the guide lever is provided with a door for preventing double loading of the disk-shaped recording medium, the configuration for preventing double loading can be easily realized. it can.

[Brief description of the drawings]

FIG. 1 is a simplified side view showing a configuration of a CD player 21 according to an embodiment of the present invention.

FIG. 2 is a plan view showing a simplified configuration of the CD player 21 during loading of a CD 38;

FIG. 3 is a simplified side view showing a state in which a CD 38 is loaded in a CD player 21.

FIG. 4 is a plan view of FIG. 3;

FIG. 5 is a bottom view showing a configuration of a floating unit 37 provided in the CD player 21.

FIG. 6 is a diagram showing an operation of the CD player 21 when a CD 38 is loaded.

FIG. 7 is a side view showing a configuration of a conventional loading device 1.

FIG. 8 is a plan view of FIG. 7;

[Explanation of symbols]

 Reference Signs List 21 CD player 24 Roller gear 25 Swing lever 26 Conveying roller 27 Guide lever 28 Loading motor 29 Drive lever 30 Slide lever 31 Clamp arm 33 Drive lever 34 Lock lever 36 Link lever 37 Floating unit 42 Stopper

Claims (3)

(57) [Claims] 1. A disc-shaped recording medium loading device for loading a disc-shaped recording medium inserted from an insertion port to a predetermined loading position by a roller to which a driving force from a loading motor is transmitted via a transmission gear, When the disc-shaped recording medium is conveyed to the loading position, a detecting member that is displaced when the disc-shaped recording medium comes into contact with the leading end side of the disc-shaped recording medium, and is swingably supported by a housing and has the transmission gear mounted thereon. And a guide lever supported at one end thereof by a first spring in a direction in which the roller is pressed against the disk-shaped recording medium, and is locked by the detection member. A rack that is swingably supported and that is opposed to a roller gear that is provided coaxially with the roller and meshes with the transmission gear is formed on the outer peripheral surface. The lock state is released by the spring being biased by a second spring in the direction in which the disk-shaped recording medium reaches the loading position and the detection member is displaced. When the rack of the oscillating lever is erected on the housing, and the rack of the oscillating lever engages with the roller gear, the oscillating displacement of the oscillating lever is prevented. A drive pin is formed on one of the detection member and the guide lever, and a guide slope is formed on the other of the detection member and the guide lever with which the drive pin abuts. When the swing lever comes into contact with the stopper, the roller is displaced by the rotation of the roller gear against the spring force of the first spring, and the roller is separated from the disk-shaped recording medium. With a loading device of the disc-shaped recording medium, characterized by further displacing the sensing member in the inserting direction of the disc-shaped recording medium by said drive pin is displaced on the guide slope. 2. A drive mechanism for at least the disk-shaped recording medium and an optical system for reading information recorded on the disk-shaped recording medium are floatingly supported by a housing via a buffer member, and are driven by the guide lever. When the guide lever presses the roller against the disk-shaped recording medium, the drive mechanism and the optical system are held and fixed, and when the guide lever separates the roller from the disk-shaped recording medium, the drive mechanism and the optical system are moved. 2. The apparatus for loading a disk-shaped recording medium according to claim 1, further comprising a lock lever that is in a floating state. 3. A door for closing at least a part of the insertion opening in a reproduction state of the disc-shaped recording medium in which the guide lever has separated the roller from the disc-shaped recording medium, is integrated with the other end of the guide lever. 2. The apparatus for loading a disk-shaped recording medium according to claim 1, wherein: