JPH08111054A - Loading device for disk-shaped recording medium - Google Patents

Abstract

PURPOSE: To obtain a loading device for disk-shaped recording medium with which the saving of space and reduction of the number of parts are possible. CONSTITUTION: A CD is transported in insertion direction H by a transporting roller rotating integrally with a roller gear 24 rotationally driven in rotating direction L when the insertion of the CD is detected. When the transported CD comes into contact with the pin of a link lever not shown in the Fig. and the pin is displaced in the insertion direction H, a sliding lever 30 slides in a direction opposite to the insertion direction H according thereto and an oscillation lever 25 is oscillated around a revolving shaft 27d in an oscillation direction I by spring force according to the movement of a projecting part 3Oa for engagement with which the pin 25 comes into contact. A rack 25a meshes with the small-diameter tooth part 24a of a roller gear 24 from the inner side when the oscillation lever 25 comes into contact with a stopper 42. A guide lever 27 having the transporting roller and the roller gear 24 is then displaced in the direction opposite to the oscillation direction I around the revolving shaft 27d, by thereby, the CD is parted from the transporting roller.

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 disc-shaped recording medium such as a compact disc.

[0002]

2. Description of the Related Art FIG. 7 is a side view showing a simplified configuration of a disk-shaped recording medium loading device 1 according to a first conventional technique, and FIG. 8 is a plan view thereof. The loading device 1 includes a guide lever 6 that pivotally supports the gears 2, 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. To be done.

The guide lever 6 is swingably provided around the rotary shaft 6a. A transport roller that rotates together with the roller gear 4 and transports a compact disc (hereinafter referred to as a CD) 13 is attached to the rotation shaft 4a of the roller gear 4. Swing gear 5 that meshes with the roller gear 4.
Is rotatably supported by a shaft support member 10 provided so as to be swingable around the rotary shaft 4a and serves as a planetary gear. The rotary shaft 5a of the swing gear 5 projects toward the slide lever 9, that is, in the direction perpendicular to the paper surface of FIG. 7, and is engageable with an engaging claw 9a provided on the slide lever 9.

The slide lever 9 is provided so as to be slidable 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. Slot 9 that engages with pin 11c
b is provided. The link lever 11 is swingably provided around the swing shaft 11a.
To the other end, that is, the end opposite to the side where the pin 11c is provided
A pin 11b with which 3 abuts is provided. Link lever 1
1 is biased by a tension spring 12 in a direction opposite to the swinging direction B.

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 rotationally driven in the rotation direction C, and the CD 13 is conveyed in the insertion direction A by the conveyance roller rotating integrally with the roller gear 4. To be done.

When the CD 13 is conveyed to the state shown in FIG. 8, the pin 11b of the link lever 11 and the CD 13 come into contact with each other, and the link lever 11 is swung in the swinging direction B as the CD 13 is conveyed. 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 engaged. 9
The engagement between a and the rotating shaft 5a is released.

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. Of the rocking gear 5, the downstream end portion in the insertion direction A is rocked and displaced downward, and is rotated in the rotation direction D as the roller gear 4 rotates 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 along the fixed rack 8 in the displacement direction E while rotating, and accordingly, the guide lever 6 is inserted in the insertion direction A downstream side. The end portion swings downward in FIG. 7 around the rotary shaft 6a, the transport roller is separated from the CD 13, and the loading operation is completed.

The second prior art (Japanese Patent Laid-Open No. 60-23196)
5 and JP-A-3-248367), similarly to the above-described prior art, a guide lever pivotally supported to be swingable is rotated by a roller gear that rotates integrally with a conveying roller, and the roller gear. The guide lever is swung when the swing gear and the rack are meshed with each other, 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 rotating shaft 6a than the roller gear 4. Since the guide lever 6 is swung by the fixed rack 8 and the fixed rack 8, the displacement distance of the swing gear 5 is larger than the displacement distance of the roller gear 4 rotating integrally with the transport roller in the vertical direction in FIG. And the length of the fixed rack 8 becomes large. 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 that rotates 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 a high cost of the loading device 1.

Further, the above-mentioned second conventional technique also has the same problem as the first conventional technique.

It is an object of the present invention to provide a disk-shaped recording medium loading device capable of saving space and reducing the number of parts.

[0014]

DISCLOSURE OF THE INVENTION According to the present invention, a disc-shaped recording medium inserted from an insertion port is loaded to a predetermined loading position by a roller to which a driving force from a loading motor is transmitted via a transmission gear. In a loading device for a disk-shaped recording medium, when the disk-shaped recording medium is conveyed to the loading position, the disk-shaped recording medium comes into contact with the leading end side of the disk-shaped recording medium and detects that the disk-shaped recording medium has reached the loading position. A lever and a housing are swingably supported, the transmission gear is mounted, the roller is supported at one end, and the roller is biased by a first spring in a direction in which the roller is pressed against the disk-shaped recording medium. It is locked by the guide lever and the detection lever, is swingably supported by the housing, and is provided on the outer peripheral surface coaxial with the roller. A rack facing the roller gear that is meshed with the transmission gear is formed, and the rack is biased by a second spring in a direction that meshes with the roller gear, and the disc-shaped recording medium is at the loading position. When the detection lever is reached and is driven by a trigger, the locking state is released and the rack is rocked and displaced, and the rack is a rocking lever that meshes with the roller gear and a rocking lever that is erected on the housing and rocks. Of the detecting lever or the guide lever, a drive pin is formed on either one of the detecting lever or the guide lever when the rack engages the roller gear. A guide slope is formed on the other side with which the drive pin contacts, and the guide lever resists the spring force of the first spring when the swing lever contacts the stopper. As the roller gear rotates, the roller swings and displaces, the roller moves away from the disc-shaped recording medium, and the drive pin displaces on the guide slope to further displace the detection lever in the disc-shaped recording medium insertion direction. A loading device for a disc-shaped recording medium, characterized in that: The present invention also provides
At least the drive mechanism of the disc-shaped recording medium and the optical system for reading the information recorded on the disc-shaped recording medium are floatingly supported by the housing via a buffer member and driven by the guide lever, and the guide lever is A lock that holds and fixes the drive mechanism and the optical system when the roller is in pressure contact with the disk-shaped recording medium, and leaves the drive mechanism and the optical system in a floating state when the guide lever separates the roller from the disk-shaped recording medium. It is characterized by having a lever. Further, according to the present invention, a door for closing at least a part of the insertion opening is integrated with the other end of the guide lever in a reproducing state of the disc-shaped recording medium in which the guide lever separates the roller from the disc-shaped recording medium. It is characterized by being provided in.

[0015]

According to the present invention, when the insertion of the disk-shaped recording medium into the disk-shaped recording medium loading device by the operator is detected by an optical sensor or the like provided near the insertion port, 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 rotationally driven in the direction in which the disc-shaped recording medium is conveyed in the insertion direction.

At this time, since the guide lever supporting the roller is biased by the first spring in the direction of pressing the roller against the disk-shaped recording medium, the inserted disk-shaped recording medium is inserted by the roller. When the disc-shaped recording medium is conveyed to the predetermined loading position, the leading end side of the disc-shaped recording medium, that is, the downstream side in the insertion direction contacts the detection lever.

When the disc-shaped recording medium comes into contact with the detection lever and the detection lever is driven by a trigger, the rocking lever is locked by the detection lever.
That is, the state in which the rack of the swing lever is separated from the roller gear is released against the spring force of the second spring, and the swing lever is swung and displaced by the spring force. When the swing lever is displaced in this manner, the rack meshes with the roller gear and the stopper prevents the swing displacement of the swing lever.

Here, the swing lever is so arranged that the 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 when the swing displacement of the swing lever is blocked by the stopper, the rack moves around the swing center of the guide lever. It follows the perfect circle.

When the rack of the swing lever meshes with the roller gear in this way, the guide lever is swing-displaced against the spring force of the first spring as the roller gear rotates, and the roller is disc-shaped. As it is separated from the recording medium, the drive pin formed on either the detection lever or the guide lever displaces on the guide slope formed on the other of the detection lever and the guide lever, and the detection lever moves. Further displacement in the insertion direction of the disc-shaped recording medium, the detection lever is separated from the disc-shaped recording medium,
The loading operation of the disc-shaped recording medium is completed.

At this time, since the disc-shaped recording medium is separated from the roller and the detection lever, the disc-shaped recording medium is in a rotatable state, and the information recorded on the disc-shaped recording medium can be reproduced. ing.

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

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

Preferably, at least the drive mechanism for the disc-shaped recording medium and the optical system for reading the information recorded on the disc-shaped recording medium are floatingly supported on the housing via a buffer member, while: The drive mechanism and the optical system are held while the roller is driven by a guide lever that is oscillated and displaced in a direction in which the roller is pressed against the disk-shaped recording medium or is moved away from the disk-shaped recording medium. A lock lever is provided to keep the drive mechanism and the optical system in a floating state when the guide lever is fixed and the roller is separated from the disk-shaped recording medium.

Therefore, the lock lever for holding and fixing the drive mechanism and the optical system or in the floating state is
Since it is driven by the guide lever, no special driving means for driving the lock lever is required, so that the structure can be simplified.

Further preferably, the reproduction state of the disc-shaped recording medium in which the other end of the guide lever is swung with the swing displacement of the guide lever, and the guide lever separates the roller from the disc-shaped recording medium. Then, a door for closing at least a part of the insertion opening is provided.

Therefore, since the guide lever is provided with the door, the double loading of the disk recording medium in which the other disk recording medium is loaded while the disk recording medium is loaded is prevented. be able to. Further, since the door is provided on the guide lever, the insertion opening is opened / closed according to the swing displacement of the guide lever, and as a result, a special drive means for driving the door for opening / closing the insertion opening is provided. Since it is not necessary, it can be realized with a simple configuration.

[0027]

1 is a side view showing a simplified structure of a CD player 21 according to an embodiment of the present invention, showing a state in which a CD is not loaded. FIG. 2 shows the CD player 21.
FIG. 3 is a plan view showing a simplified configuration of No. 3, showing a state in which the CD 38 is being loaded. FIG. 3 is a side view showing a simplified configuration of the CD player 21, showing a state in which the loading of the CD 38 is completed. FIG. 4 is a plan view showing the structure of the CD player 21 in a simplified manner, showing 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 conveying 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 comprises a top plate 27a and both side plates 27b and 27c. Guide lever 2
Gears 22 and 23 and a roller gear 24 are provided on one side plate 27b of No. 7, and a conveying roller 26 is axially supported by both side plates 27b and 27c. The guide lever 27 is swingable around the rotating shaft 27d. The gear 22 and the swing lever 25 are also pivotally supported by the rotating shaft 27d. The large-diameter tooth portion of the gear 22 meshes with the gear 28 a mounted on the loading motor 28 attached to 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 the roller gear 24.
It meshes with the large-diameter tooth part of. The small-diameter tooth portion 24a of the roller gear 24 can mesh with a rack 25a of a swing lever 25, which will be described later. The roller gear 24 is the transport roller 2
It is fixed to the same rotating shaft 26a as 6 and rotates integrally with the conveying roller 26.

The swing lever 25 having the rack 25a and the pin 25b is biased in the swing direction I by a spring (not shown). The swing of the swing lever 25 in the swing direction I by the spring is The pin 25b is brought into contact with an engaging projection 30a provided on a slide lever 30 which will be described later, or the swing lever 25 is brought into contact with a stopper 42 attached to a housing 41, thereby stopping the operation. Swing lever 2
The rack 25a provided on the outer peripheral surface of
Is provided on a circular arc centered at, and the length of the rack 25a along the circular 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 5b is located substantially above, the rack 25a is a CD3.
8 is provided so as to be located on the downstream side of the insertion direction H.

Two pins 27e and 27f are provided at the downstream end in the insertion direction H of the side plate 27b of the guide lever 27, and a pin 27g is provided at the upstream end 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. Pins 27e and 27f are roller gears 24
Is provided on the downstream side in the insertion direction H of the pin 27g, and the pin 27g
It is provided on the upstream side of the insertion direction H of 7d.

The guide lever 27 thus constructed
Is provided at the upstream end in the insertion direction H in the housing 41 so that the transport roller 26 contacts the CD 38 from below in FIG. Since the guide lever 27 is swingable around the rotating 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 conveying roller 26 can be pressed against the CD 38, and in the state shown in FIGS. 3 and 4, the conveying roller 26 is separated from the CD 38. There is.

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

The slide lever 30 having an elongated shape along the insertion direction H is provided slidably in the insertion direction H. At the upstream end of the slide lever 30 in the insertion direction H,
Engaging protrusion 30a that engages with the pin 25b of the swing lever 25
And an engagement recess 30b that engages with a pin 29a provided on the drive lever 29 described later. An elongated hole 30c that engages with a pin 36a provided on a link lever 36 which is a detection lever described later is provided at the downstream end of the slide lever 30 in the insertion direction H.

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

When the CD 38 is not loaded in the CD player 21, the slide lever 30 abuts on a stopper (not shown), and the tension spring 40 urges the slide lever 30 in the inserting direction H and swings the link lever 36. A displacement of a predetermined amount or more in the direction opposite to the direction J is prevented.

The drive lever 29 swingably provided around the swing shaft 29b has a pin 30b which engages with the engaging 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 is provided.

The drive lever 33 for sliding the lock lever 34 in the inserting direction H has two engaging recesses 33a,
33b and a pin 33c are provided. Drive lever 33
Is swingably provided around the swing shaft 33d. The drive lever 33 is spring-biased in the swinging direction K by the winding spring 32, and the swinging in the swinging direction K by the spring causes the inner wall 33 defining the engagement recess 33a.
It is stopped by contacting the pin e with the guide lever 27.

The engaging recess 33a of the drive lever 33 can be engaged with the pin 27e of the guide lever 27, and the engaging recess 33b has a floating unit 37 which will be described later.
Fixed shaft 39a on the upstream side in the insertion direction H provided in the
Can be engaged with. Further, the pin 33c engages with a long hole 34a provided in the lock lever 34.

The lock lever 34 slidably provided along the insertion direction H has 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 upstream of the insertion direction H. Engaging hole 34b for fixing the fixed shaft 39a, and an engaging recess opening on the downstream side in the inserting direction H for fixing the one fixed shaft 39b on the downstream side in the inserting direction H provided in the floating unit 37. 34c are provided.

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 fitted into the engaging recess 33b of the drive lever 33 and the engaging hole 34b of the lock lever 34. The fixed shaft 39b is engaged with the engagement recess 34c. The engagement recess 33b prevents the floating unit 37 from being displaced in a direction parallel to the insertion direction H, and the engagement hole 3
The displacement of the floating unit 37 in the vertical direction in FIG. 1 is prevented by the 4b and the engaging recess 34c.

When the loading of the CD 38 into the CD player 21 as shown in FIG. 3 is completed, the drive lever 33 is swung in the swinging direction K from the state shown in FIG. 1, and accordingly, the lock lever is swung. 34 is slid in the direction opposite to the insertion direction H, and the fixed shaft 39a, the engagement recess 33b and the engagement hole 34b, and the engagement between the fixed shaft 39b and the engagement recess 34c are released. 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 described later, and stable reproduction of information recorded on the CD 38 is possible.

The clamp arm 31 is the clamp arm 3
The downstream end of the No. 1 in the insertion direction H is pivotally supported by the housing 41, and the upstream end of the clamp arm 31 in the insertion direction H can be displaced toward 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 the clamp arm 3
The clamper provided in No. 1 is urged by a spring (not shown) in the direction of 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 to clamp the clamp lever. The displacement of the arm 31 in the direction of approaching the CD 38 is blocked, 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
Is 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 damper 46.
39c, 39d and three dampers 47 are provided.

The damper 46 is for absorbing the 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 paper surface of FIG. 5, that is, in the vertical direction of FIG.

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 the 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 engaging protrusion 30a of the slide lever 30a has a swing lever. The pin 25b of 25 abuts, and the rack 25a is separated from the small-diameter tooth portion 24a of the roller gear 24 in the downward direction in FIG. Further, in the state shown in FIG. 1, the door 27h at the upstream end of the guide lever 27 in the insertion direction H is displaced downward in FIG. 1, and the CD insertion opening (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 opening 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 The loading motor 28 is driven in the direction to rotate 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 by the transport roller 26 to the downstream side in the insertion direction H.

As shown in FIG. 2, the conveyed CD 38 contacts the pin 36c of the link lever 36, and the CD 3
When 8 is transported to the downstream side in the insertion direction H, the link lever 36 is swung in the swinging direction J as the CD 38 is transported,
The slide lever 30 slides in the direction opposite to the insertion direction H, and the state shown in FIG. 6A is obtained.

In the state shown in FIG. 6 (1), the rocking lever 25, which is biased in the rocking direction I by the spring as the slide lever 30 slides in the direction opposite to the inserting direction H, moves. , The small-diameter tooth portion 24a of the roller gear 24, which rotates in the rotation direction L at the same time as it abuts against the stopper 42 and swings in the swinging direction I blocked by the pin 25b and the engaging convex portion 30, and the guide lever 25. Rack 25a meshes with.

As the slide lever 30 slides,
The drive lever 29 is swung 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. 6 (1), the guide slope 29d
However, it can come into contact with the pin 27g of the guide lever 27.

From the state of FIG. 6A, the roller gear 2 is further added.
When 4 is rotated, the roller gear 24 meshes with the rack 25a of the swing lever 25, so the roller gear 24 moves downward with respect to the rack 25a of the swing lever 25 in FIG. 6 (2), The guide lever 27 is swung in the direction opposite to the swing direction I, and the state shown in FIG. 6B is obtained.
In the state of FIG. 6B, the transport roller 26 is the CD 38.
Has 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. 6 (2), and the clamp arm 31 contacting the pin 27f in FIG. 6 (2). Swing downwards. In addition, the pin 27e is attached to the inner wall 3 of the engagement recess 33a of the drive lever 33.
3e slides downward in FIG. 6 (2), and the drive lever 33 swings in the swinging direction K accordingly. 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.

From the state shown in FIG. 6B, the roller gear 2 is further added.
6 is rotated and the guide lever 27 is swung in the direction opposite to the swing direction I, the pin 27g of the guide lever 27 is in contact with the guide slope 29d of the drive lever 29, as shown in FIG. Becomes In the state of FIG. 6 (3), the coil spring 32 presses the guide lever 27 in the direction opposite to the swinging direction I, so that the pin 27g is guided by the guide slope 29.
It is stable without rattling when it is in contact with d.

Further, in the state of FIG. 6C, the pin 27f of the guide lever 27 and the clamp arm 31 are separated from each other, 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 swinging direction I from the state shown in FIG. 6C, the pin 27g of the guide lever 27 causes the drive lever 29 to be inserted in the inserting direction H.
While pressing in the opposite direction, the guide slope 29d of the drive lever 29 slides upward in FIG. 6 (3), and accordingly, the drive lever 29 shown in FIG. The upper end in 3) is rocked.

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

Guide lever 2 is brought to the state shown in FIGS. 3 and 4.
When 7 is swung, the contact portion 34d of the lock lever 34, which is slid in the opposite direction to the insertion direction H via the drive lever 33 with the swing of the guide lever 27, causes the detection piece 35a of the switch 35 to move. 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 shown in FIGS. 3 and 4, C of CD38
In order to prevent double loading of the D player 21, a housing 41
The CD insertion opening (not shown) provided in the
It is closed by the door 27h of No. 7. Further, in this state, the guide lever 27 is biased by the winding spring 32 in the direction opposite to the swinging 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 by the turntable 43 of the floating unit 37 and the clamper of the clamp arm 31. Since it has been done, CD38
Is in a rotatable state, and the information recorded on the CD 38 can be reproduced.

Next, the discharging operation of 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 the front plate or the like of the housing 41 where the CD insertion opening is provided. When the discharging operation is started, the loading motor 28 is driven in the direction for rotating the roller gear 24 in the direction opposite to the rotation direction L.

From the state of FIG. 3 and FIG.
When is rotated in the direction opposite to the rotation direction L, the guide lever 27 is swung in the swinging direction I, and after the state of FIG. 6C and the state of FIG. The state shown in FIG. 6 (1) is reached in which pressure is applied.

In the state of FIG. 6 (1), the guide lever 27
The pin 27g of the drive lever 29 is separated from the guide slope 29d of the drive lever 29, and the link lever 36 is connected to the tension spring 4
By the urging force of 0, the pin 36c is swung in the direction opposite to the swing direction J from the state shown in FIG. 4, until the pin 38c abuts the CD 38. 6 (1) is slid in the insertion direction H up to the state shown in FIG.

From the state of FIG. 6A, the roller gear 2 is further added.
When 4 is rotated in the direction opposite to the rotation direction L, the conveyance roller 26 starts to convey the CD 38 in the opposite direction to the insertion direction H, and as the CD 38 is ejected, the link lever 3
6 oscillates in the direction opposite to the oscillating direction J by the urging force of the tension spring 40, and accordingly, the engaging projection 30a of the slide lever 30 inserts the pin 25b of the oscillating lever 25 into the inserting direction H.
Press to move. As a result, the rocking lever 25 is rocked in the direction opposite to the rocking direction I and brought into the state shown in FIG.

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

Therefore, the swing lever 25 for swinging and displacing the guide lever 27 in the direction in which the conveying roller 26 provided in the guide lever 27 is separated from the CD 38.
Since the rack 25a is provided so as to mesh with the roller gear 24 from the rotating shaft 27d side which is the swing center of the guide lever 27, the swing gear is provided further outside the conventional roller gear. Compared with the structure in which the rocking gear and the rack are meshed with each other, the displacement width of the end portion of the guide lever 27 on the side where the transport roller 26 is provided, and the length of the rack 25a along the rocking 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
It is possible to realize space saving of a portion provided with the rack 25a portion of No. 5.

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

Furthermore, since the link lever 36 is separated from the CD 38 with the swing displacement of the guide lever 27 in the direction in which the conveying roller 26 is separated from the CD 38, the link lever 36 is separated from the CD 38. Since no special drive means is required, the structure can be simplified.

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

Furthermore, the guide lever 27 has a door 27.
Since h is provided, C shown in FIGS.
With the D38 loaded, it is possible to prevent double loading of a CD loaded with another CD. Also, the door 2
Since 7h is provided on the guide lever 27, the CD insertion opening is opened and closed according to the swing displacement of the guide lever 27, and as a result, a special drive means for driving the door for opening and closing the CD insertion opening. Therefore, the configuration can be simplified.

In the above embodiment, the guide lever 2
7 is provided with a pin 27g and the 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.

Further, the swing lever 25 and the slide lever 3
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 as viewed from the upstream side in the insertion direction H, but may be provided on the left side of the CD 38.

[0075]

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

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 conventional case.

Further, according to the present invention, since the lock lever for holding, 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, and the structure is constituted. Can be simplified.

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

[Brief description of drawings]

FIG. 1 is a side view showing a simplified configuration of a CD player 21 which is 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 side view showing a simplified state of a CD player 21 loaded with a CD 38.

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

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

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 the configuration of a conventional loading device 1.

FIG. 8 is a plan view of FIG.

[Explanation of symbols]

 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)

[Claims] 1. A disc-shaped recording medium loading device for loading a disc-shaped recording medium inserted from an insertion opening 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, the disc-shaped recording medium comes into contact with the leading end side of the disc-shaped recording medium to detect that the disc-shaped recording medium reaches the loading position, and the detection lever is swingable in the housing. A guide lever, which is supported by the first transfer roller, is mounted on the transmission gear, is supported by one end of the roller, and is biased by a first spring in a direction in which the roller is pressed against the disk-shaped recording medium; It is locked by a detection lever, is swingably supported by the housing, and is provided on the outer peripheral surface coaxially with the roller and meshes with a transmission gear. A rack facing the roller gear is formed, and the rack is biased 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, the detection lever triggers. When driven, the locked state is released and the rack is rocked and displaced, and the rack engages the roller gear, and the rack of the rocking rocker that is erected upright in the housing meshes with the roller gear. Then, a stopper for blocking the swing displacement of the swing lever is provided, and a drive pin is formed on one of the detection lever and the guide lever, and the drive pin is formed on the other of the detection lever and the guide lever. An abutting guide slope is formed, and when the rocking lever comes into contact with the stopper, the guide lever resists the spring force of the first spring and rotates with the roller gear. And the roller is moved away from the disc-shaped recording medium, and the drive pin is displaced on the guide slope, whereby the detection lever is further displaced in the insertion direction of the disc-shaped recording medium. Disk-shaped recording medium loading device. 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 driven by the guide lever. , The drive mechanism and the optical system are held and fixed when the guide lever presses the roller against the disk-shaped recording medium, and the drive mechanism and the optical system are held when the guide lever separates the roller from the disk-shaped recording medium. The loading device for 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 port is integrated with the other end of the guide lever when the guide lever separates the roller from the disc-shaped recording medium in a reproducing state of the disc-shaped recording medium. The loading device for the disk-shaped recording medium according to claim 1, wherein