JP2002313007A - Recording medium reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording medium reproducing device where recording mediums are prevented from being removed from a carrying path. SOLUTION: The recording medium reproducing device 1 for fetching information in a large-diameter CD and a small-diameter CD as the recording mediums is provided with a device main body 3, a carrying unit and a disk centering mechanism 60. The carrying unit carries both of the CDs from a recording medium insertion port 12 to a reproducing position. The mechanism 60 is provided with a pair of centering arms 62 and a stopper arm 64. The pair of centering arms 62 guide both of the CDs to the reproducing position. The arm 64 is engaged with one of the centering arms 62. When the large-diameter CD is inserted, engaging of the arm 64 and one of the centering arms 62 with each other is kept.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to, for example, Compact
The present invention relates to a recording medium reproducing apparatus that reads information from a recording medium such as a disc.

[0002]

2. Description of the Related Art For example, a CD player as a recording medium reproducing apparatus is mounted on an instrument panel (hereinafter referred to as an instrument panel) of a vehicle as a moving body. C
The D player reads information recorded on a recording medium such as a Compact Disc (hereinafter referred to as a CD).

[0003] The CD player includes a device main body attached to the instrument panel, a recording medium insertion opening opened in the device main body, a transport unit, a pair of centering arms, and a device for reading information recorded on the CD. It has a reproduction unit and the like. The device body is formed in a box shape by assembling a plurality of sheet metals and the like. The CD is inserted inside the recording medium insertion slot.

The transport unit transports a CD that has passed through the recording medium insertion port to a predetermined reproduction position, or conveys a CD from the reproduction position to the recording medium insertion port and discharges the CD from the main body of the apparatus. The transport unit includes a pair of holding members provided so as to be able to freely contact and separate from each other.

[0005] One of the pair of holding members is provided with a transport roller which is rotationally driven by a drive source such as a motor. The transport roller transports the CD by being rotationally driven by a drive source such as the motor. The other holding member includes a sliding member having a small coefficient of friction. The sliding member guides the transport direction of the CD with the CD sandwiched between the transport roller and the sliding member. The transport unit is
The CD is conveyed by sandwiching the CD between the pair of holding members.

[0006] A pair of centering arms are arranged near the recording medium insertion slot. The pair of centering arms are spaced from each other along the width direction of the device main body. The pair of centering arms includes an arm main body rotatably supported by the device main body such that one end thereof approaches and separates from each other, and a protruding pin protruding from one end of the arm main body.

In these centering arms, the arm bodies rotate relative to the apparatus body in cooperation with each other by a link mechanism. Further, these centering arms are urged by urging means such as a spring in a direction in which the one ends, that is, the protruding pins, approach each other.

[0008] The reproducing unit includes a turntable for rotating the CD, an optical pickup for reading information recorded on the CD, and the like. The reproducing unit positions (clamps) the CD at the reproducing position, the rotating table rotates the CD, and the optical pickup reads information recorded on the CD.

When the CD is inserted into the main body of the device through the recording medium insertion opening, the CD first comes into contact with the projecting pin. The CD is sandwiched between the pair of holding members. As the CD is transported into the apparatus body by the rotation of the transport roller, the arm body gradually rotates in a direction in which the protruding pins move away from each other. The projecting pins of the pair of centering arms guide the CD to the playback position. In this way, the recording medium reproducing apparatus has conveyed the CD from outside the apparatus main body to the reproducing position.

[0010] Then, the CD is clamped by a reproducing unit, and information is taken out by the reproducing unit. The recording medium playback device outputs the extracted information as audio. When the CD is carried out of the apparatus main body, first, the rotation of the turntable is stopped. By rotating the transport roller of the transport unit in the opposite direction to the previous direction, the CD is gradually transported from the inside of the device body to the outside of the device body through the recording medium insertion opening.

At this time, the protruding pins come into contact with the CD. The protruding pins of the pair of centering arms move away from or approach (contact or separate from) each other as the CD is ejected. The projecting pins of the pair of centering arms are
Guides the direction of discharge of D.

[0012]

The above-mentioned recording medium reproducing apparatus reproduces information recorded on a plurality of types of CDs having different outer diameters. In a recording medium reproducing apparatus provided with the above-described centering arm or the like, when a relatively small-diameter CD is inserted near the end of the recording medium insertion slot, it contacts only one of the projecting pins of the pair of centering arms, and Therefore, there were cases where the small-diameter CD could not be guided to the reproduction position.

When the CD is ejected from the device body,
If an obstacle is placed near the recording medium insertion slot, the CD collides with the obstacle. At this time, in particular, the CD having a relatively small diameter escapes to the left and right near the recording medium insertion port due to the imbalance of the conveying force, and is inserted into the apparatus main body again. Then, the small-diameter CD deviates from the transport path from the recording medium insertion opening to the reproduction position. For this reason, a small-diameter CD is penetrated deep into the device body. Thus, in the conventional recording medium reproducing apparatus, C
There is a possibility that the recording medium such as D may deviate from the transport path between the recording medium insertion port and the reproduction position.

Accordingly, it is an object of the present invention to provide a recording medium reproducing apparatus capable of preventing a recording medium from deviating from a transport path.

[0015]

In order to solve the above-mentioned problems and achieve the object, a recording medium reproducing apparatus according to the present invention comprises a large-diameter disk-type recording medium and a small-diameter disk having different outer diameters. In the recording medium reproducing device for reading the information recorded on these disk-type recording media by positioning the type-recording medium at the reproduction position in the apparatus main body, the large-diameter disk-type recording medium and the small-diameter disk-type recording medium Transport means for transporting the disk-shaped recording medium along the transport path from the recording medium insertion port provided in the apparatus main body to the reproduction position, and the disc-shaped recording medium is provided along the transport path along the transport path. Guiding means for guiding the recording medium to the reproducing position, a preventing means provided on the main body of the apparatus so as to be displaceable, and for preventing the small-diameter disk-shaped recording medium from coming off the transport path; When the disc-shaped recording medium is conveyed, it is made to be able to be displaced out of the conveyance path. And regulating means for regulating.

According to a second aspect of the present invention, in the recording medium reproducing apparatus according to the first aspect, the guide unit includes a pair of centering arms, and the blocking unit includes the pair of centering arms. A stopper arm that is detachably attached to one of the centering arms and that prevents the small-diameter disk-shaped recording medium from coming off the transport path when the centering arm is engaged with the one of the arms; When the large-diameter disk-shaped recording medium is conveyed, the engagement between the one centering arm and the stopper arm is released so that the stopper arm can be displaced out of the conveyance path, and the small-diameter disk-shaped recording medium is displaced. When the recording medium is conveyed, the engagement between the one centering arm and the stopper arm is maintained. It is characterized in that to regulate the displacement of the stopper arm Te.

According to a third aspect of the present invention, in the recording medium reproducing apparatus according to the second aspect of the present invention, the pair of centering arms are arranged such that both ends thereof can be freely moved toward and away from each other. An arm body rotatably supported on the arm body, a projection pin provided at one end of the arm body and capable of contacting both a large-diameter disk-type recording medium and a small-diameter disk-type recording medium inserted into the device main body; With
The one centering arm includes an engagement protrusion provided at the other end of the arm body, the stopper arm includes a second arm body rotatably supported by the device body, and the second arm body. Wherein the hook engages with the engaging projection along a direction in which the disc-shaped recording medium is carried in from the recording medium insertion opening toward the reproduction position. .

According to a fourth aspect of the present invention, in the recording medium reproducing apparatus according to the third aspect, the regulating means includes a link for interlocking the pair of centering arms. When the protruding pin of one of the pair of centering arms is pushed away from the protruding pin of the other centering arm, the engagement between the engaging protrusion and the hook portion is maintained. And restricts the displacement of the stopper arm, and releases the engagement between the engaging projection and the hook when the two protruding pins of the pair of centering arms are pushed in directions away from each other. Is allowed.

According to a fifth aspect of the present invention, there is provided a recording medium reproducing apparatus according to the present invention, in which a large-diameter disk-type recording medium and a small-diameter disk-type recording medium having different outer diameters are positioned at a reproduction position in an apparatus main body. In a recording medium reproducing apparatus for reading information recorded on a disk-type recording medium, the large-diameter disk-type recording medium and the small-diameter disk-type recording medium are moved from a recording medium insertion port provided in the device body to the reproduction position. Transport means for transporting the disk-shaped recording medium along the transport path, and guide means for guiding the disk-shaped recording medium to the reproduction position along the transport path; and Blocking means that is provided so as to be displaceable in the apparatus main body and that prevents the small-diameter disk-shaped recording medium from coming off the transport path when located in the transport path. The blocking means is positioned outside the transport path by contacting the large-diameter disk-shaped recording medium when the large-diameter disk-shaped recording medium is transported, and the small-diameter disk-shaped recording medium is transported. Then, when the small-diameter disk-shaped recording medium comes into contact, the displacement is regulated so as to be located in the transport path.

According to a sixth aspect of the present invention, in the recording medium reproducing apparatus of the fifth aspect, the blocking means is rotatably supported around the other end, and has one end. A stopper arm that is urged in a direction to be positioned inside and outside the transport path, wherein the large-diameter disc-shaped recording medium comes into contact with the one end when the large-diameter disc-shaped recording medium is inserted into an apparatus body; A line connecting the one end and the other end is located closer to the recording medium insertion opening along the transport direction than a normal line of the large-diameter disk-shaped recording medium, and the small-diameter disk-shaped At the contact point where the small-diameter disk-shaped recording medium contacts the one end when the recording medium is inserted into the device body,
A line segment connecting the one end and the other end is located on the back side of the device main body along the transport direction from a normal line of the small-diameter disk-shaped recording medium.

According to the recording medium reproducing apparatus of the present invention, when the small-diameter disk-shaped recording medium is conveyed into the main body of the apparatus, the restricting means restricts the displacement of the preventing means and conveys the conveying path. Position within. Therefore, the blocking means:
The small-diameter disk-shaped recording medium is reliably prevented from coming off the transport path.

According to the recording medium reproducing apparatus of the present invention, when a small-diameter disk-shaped recording medium is conveyed, its displacement is restricted while the stopper arm is engaged with one of the centering arms. . Therefore, the stopper arm reliably prevents the small-diameter disk-shaped recording medium from coming off the transport path. When the large-diameter disk-shaped recording medium is transported, the engagement between the stopper arm and one of the centering arms is released. Therefore, the stopper arm does not hinder the conveyance operation of the large-diameter disk-shaped recording medium.

According to the recording medium reproducing apparatus of the present invention, the hook of the stopper arm is engaged with the engaging projection of one centering arm along the carrying direction of the disk-shaped recording medium. . The centering arm is rotatably supported by the device main body such that both ends of the arm main body contact and separate from each other. Further, when the disk-type recording medium is inserted into the apparatus main body, the centering arm is rotated in a direction in which the protruding pins move away from each other.

First, when a large-diameter disk-type recording medium is inserted into the apparatus main body, the centering arm is rotated in a direction in which the protruding pins are separated from each other. Then, the engagement protrusion approaches the other centering arm while moving toward the inside of the device main body. Then, the engagement protrusion comes out of the hook.

Therefore, when the large-diameter disk-shaped recording medium is transported into the apparatus main body, the engagement between the stopper arm and one of the centering arms can be reliably released. For this reason, the displacement of the stopper arm with respect to the device main body is reliably allowed. Therefore, the stopper arm does not hinder the transport operation of the large-diameter disk-shaped recording medium.

According to the recording medium reproducing apparatus of the present invention, when the protruding pin of one of the centering arms is pushed away from the other centering arm, the engaging projection and the hook are moved. It remains engaged. For this reason, when the small-diameter disk-shaped recording medium is transported, the engagement projection and the hook remain engaged. For this reason, the displacement of the stopper arm with respect to the device body is restricted. Therefore, the stopper arm more reliably prevents the small-diameter disk-shaped recording medium from coming off the transport path.

When the protruding pins of both centering arms are pushed away from each other, the engagement between the engaging projection and the hook is released. Therefore, when the large-diameter disk-shaped recording medium is inserted into the main body of the device, the engagement between the engaging projection and the hook is released. For this reason, the displacement of the stopper arm with respect to the device body is allowed. Therefore, the stopper arm does not more reliably hinder the conveyance operation of the large-diameter disk-shaped recording medium.

According to the recording medium reproducing apparatus of the present invention, when a small-diameter disk-shaped recording medium is transported, the blocking means is positioned in the transport path. Therefore, the blocking means reliably prevents the small-diameter disk-shaped recording medium from coming off the transport path.

When a large-diameter disk-shaped recording medium is transported, the blocking means is positioned outside the transport path. Therefore, the blocking means does not hinder the conveyance operation of the large-diameter disk-shaped recording medium.

According to the recording medium reproducing apparatus of the present invention, when the large-diameter disk-shaped recording medium is inserted into the main body of the apparatus, the line connecting one end and the other end of the stopper arm. The portion is located closer to the recording medium insertion opening than the normal line of the large diameter disk type recording medium.

For this reason, when one end is pushed along the normal line of the large-diameter disk-shaped recording medium in accordance with the operation of transporting the large-diameter disk-shaped recording medium into the apparatus body, the one end is moved out of the conveyance path. The stopper arm rotates in the direction located at. Therefore, when the large-diameter disk-shaped recording medium is transported into the apparatus main body, one end of the stopper arm comes off (exits) from the transport path. Therefore, the stopper arm does not hinder the transport operation of the large-diameter disk-shaped recording medium.

Further, when the small-diameter disk-type recording medium is inserted into the main body of the apparatus, a line connecting one end and the other end of the stopper arm is conveyed from the normal line of the small-diameter disk-type recording medium. It is located at the back of the device body along the direction.

For this reason, even if one end is pushed along the normal line of the small-diameter disk-type recording medium along with the operation of transporting the small-diameter disk-type recording medium into the main body of the apparatus, the stopper arm has one end. Do not rotate in the direction outside the transport path. Therefore, when the small-diameter disk-shaped recording medium is transported into the apparatus main body, one end of the stopper arm is positioned on the transport path. Therefore, the stopper arm reliably prevents the small-diameter disk-shaped recording medium from coming off the transport path.

[0034]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A recording medium reproducing apparatus 1 according to a first embodiment of the present invention will be described with reference to FIGS. The recording medium reproducing apparatus 1 shown in FIG.
It is mounted on an instrument panel (hereinafter referred to as an instrument panel) of a vehicle as a moving body.

The recording medium reproducing apparatus 1 has an outer diameter of, for example, 12
a large-diameter CD 2a (shown in FIG. 12) as a large-diameter disk-type recording medium having a relatively large diameter such as 8 cm
The user selects a small-diameter CD 2b (shown in FIGS. 10 and 11) as a small-diameter disk-shaped recording medium having a relatively small diameter such as m, and stores it in a device body 3 described later. The recording medium reproducing apparatus 1 is configured to use the CDs 2 having different outer diameters from each other.
a, 2b is positioned at a reproduction position, which will be described later, in the apparatus body 3, and the information recorded on these CDs 2a, 2b is taken out (reproduced) and output as sound.

As shown in FIG. 1 and the like, the recording medium reproducing apparatus 1 includes an apparatus main body 3 and a transport unit 4 as transport means.
(Shown in FIGS. 6 to 8), a clamp reproducing unit 5 as a clamp reproducing unit, and a pair of lock members 44.
(Shown in FIGS. 6 to 8) and a disk centering mechanism 60 (shown in FIG. 9).

The device main body 3 includes a chassis 8 (FIGS. 2 and 3).
And the like, a drive source unit 6 (shown in FIG. 3), and a pair of slide members 7 (one shown in FIG. 4).
As shown in FIGS. 2 and 3, the chassis 8 is configured by attaching a plurality of sheet metals and the like to each other. The sheet metal or the like is bent, and the chassis 8 is formed in a flat box shape.

As shown in FIGS. 2 and 3, the chassis 8 has a substantially flat bottom wall 9, a substantially flat ceiling wall 10 opposed to the bottom wall 9 at an interval, and these bottom walls 9. Ceiling wall 10
And a plurality of peripheral walls 11 that are continuous with. Each of these walls 9, 10, 11 is provided with a plurality of openings to reduce the weight and secure the rigidity of the chassis 8.

A recording medium insertion opening 12 is formed in one of the plurality of peripheral walls 11 located on the near side in FIG. The recording medium insertion port 12 is connected to the one peripheral wall 1
1 through. The recording medium insertion opening 12 can pass the CDs 2a and 2b inside along the arrow K in FIG. Through the recording medium insertion port 12, the CD2
a and 2b are housed in the device main body 3 or discharged from the device main body 3.

The drive source section 6 is mounted near another peripheral wall 11 (the peripheral wall 11 located on the inner side in FIG. 3) connected to the one peripheral wall 11 in which the recording medium insertion opening 12 is formed. The drive source section 6 includes a motor 13 as a drive source and a plurality of gears 14, as shown in FIG. The motor 13 is mounted on the chassis 8. The motor 13 serves as a drive source for the transport unit 4 described in this specification.

A pinion (not shown) is attached to the output shaft of the motor 13. The plurality of gears 14 are each rotatably supported by the peripheral wall 11 and the like. The gears 14 mesh with each other, and one of the gears 14 meshes with the pinion.

A pair of slide members 7 are connected to a pair of peripheral walls 11 connected to one peripheral wall 11 on which a recording medium insertion opening 12 is formed.
It is attached to each. The slide member 7 is slidably attached to the peripheral wall 11 along the arrow K. That is, the slide member 7 is composed of the CDs 2a and 2b.
Are slidable along the insertion and ejection directions (hereinafter collectively referred to as the transport direction).

A rack 15 is attached to the slide member 7 located on the inner side in FIG. 3 of the pair of slide members 7. When the CDs 2 a and 2 b are inserted into the apparatus main body 3 through the recording medium insertion port 12, the rack 15 is pushed by a seesaw member (not shown) toward one peripheral wall 11 on which the recording medium insertion port 12 is formed.

When the rack 15 is pushed toward the one peripheral wall 11 by the seesaw member, one gear 1
Meshes with 4. Further, the pair of slide members 7 are synchronized with each other by the link 100 (shown in FIG.
To slide. That is, the pair of slide members 7 approach or move away (contact / separate) from the recording medium insertion port 12 at the same time.

As shown in FIG. 4, the slide member 7 attached to the peripheral wall 11 on the far side in FIG.
A synthetic resin portion 17. The sheet metal part 16 is formed in a strip shape and is slidably supported on the peripheral wall 11 along the arrow K in FIG. The longitudinal direction of the sheet metal part 16 is along the longitudinal direction of the peripheral wall 11.

The synthetic resin portion 17 is made of a synthetic resin having a small coefficient of friction and is formed in a substantially rectangular shape. Synthetic resin part 1
7 are attached to the sheet metal part 16. The synthetic resin portion 17 includes a central portion in the longitudinal direction of the sheet metal portion 16 and the sheet metal portion 1.
6 and the sheet metal part 16.
Is provided between the central portion and the end portion.

The sheet metal portion 16 has a pair of guide holes 18,
A pair of holes 19 are provided. These holes 18,1
9 passes through the sheet metal part 16. The pair of guide holes 18 are provided at the end of the sheet metal part 16 near the recording medium insertion opening 12. The pair of guide holes 18 are arranged at intervals from each other along the longitudinal direction of the sheet metal portion 16.

The guide hole 18 has a pair of horizontal extending portions 20a and 20b and a pair of inclined extending portions 21a and 21a, respectively.
b. The guide hole 18 is provided with one horizontal extending portion 20a, one inclined extending portion 21a, the other inclined extending portion 21b, and the other horizontal extending portion 20b in order from the side close to the recording medium insertion opening 12. are doing. The one horizontal extending portion 20a, the one inclined extending portion 21a, the other inclined extending portion 21b, and the other horizontal extending portion 20b are connected to each other in series.

The two horizontally extending portions 20a and 20b are
6, ie, extends in the sliding direction (arrow K) of the slide member 7. One horizontal extension 20a is disposed below the other horizontal extension 20b in FIG. The two inclined extension portions 21a and 21b are connected to the sheet metal portion 16, that is, the slide member 7.
Extend along a direction intersecting the sliding direction (arrow K).

The one inclined extending portion 21a gradually extends downward as the distance from the one horizontal extending portion 20a increases. The other inclined extending portion 21b is separated from the one inclined extending portion 21a and is separated from the other horizontal extending portion 2a.
It extends gradually upward as it approaches 0b.

The one hole 19 is provided along the longitudinal direction of the sheet metal part 16 between the synthetic resin part 17 provided at the center part of the sheet metal part 16 and the center part and the end part. It is provided between the synthetic resin portion 17. The other hole 19
Along the longitudinal direction of the sheet metal part 16, a synthetic resin part 17 provided between the central part and the end part, and a synthetic resin part 17 provided at an end part of the sheet metal part 16. It is provided between them.

A guide slope 22 is provided at an end of the sheet metal part 16 near the recording medium insertion opening 12. The guide slope 22 is inclined with respect to the sliding direction of the slide member 7 so as to gradually rise upward toward the recording medium insertion opening 12.

A first guide groove 23 is provided in the synthetic resin portion 17 provided at the center of the sheet metal portion 16.
The first guide groove 23 is formed to be concave from the surface of the synthetic resin portion 17 located inside the device main body 3. The first guide groove 23 includes a horizontal portion 24, an upper inclined portion 25, and an enlarged portion 26.
And These horizontal portion 24 and upward inclined portion 2
5 and the enlargement portion 26 are arranged in order along the sliding direction of the slide member 7 as the distance from the recording medium insertion opening 12 increases. The horizontal portion 24, the upper inclined portion 25, and the enlarged portion 26 are connected to each other.

The horizontal portion 24 extends along the sliding direction of the slide member 7. The upper inclined portion 25 is a horizontal portion 2
4, that is, it is inclined with respect to the sliding direction of the slide member 7 so as to gradually move upward as the distance from the recording medium insertion opening 12 increases. The enlarged portion 26 includes the upward inclined portion 25.
That is, the width in the direction intersecting the sliding direction of the slide member 7 gradually increases as the distance from the recording medium insertion opening 12 increases. The width of the end of the enlarged portion 26 away from the recording medium insertion port 12 is
Is approximately equal to the width of

A second guide groove 27 is provided in the synthetic resin portion 17 provided between the center portion of the sheet metal portion 16 and the end portion. The second guide groove 27 is formed to be concave from the surface of the synthetic resin portion 17 located inside the device main body 3. The second guide groove 27 includes a horizontal portion 27a, a downward inclined portion 28, and an enlarged portion 29. The horizontal portion 27a, the downward inclined portion 28, and the enlarged portion 29 are sequentially arranged along the sliding direction of the slide member 7. The horizontal portion 27a, the downward inclined portion 28, and the enlarged portion 29 are connected to each other.

The horizontal portion 27a extends along the sliding direction of the slide member 7. The lower inclined portion 28 is inclined with respect to the sliding direction of the slide member 7 so as to gradually descend as the distance from the recording medium insertion opening 12 increases. As the enlargement portion 29 moves away from the downward inclined portion 28, that is, the recording medium insertion port 12, the slide member 7
Is formed so that the width in the direction intersecting the sliding direction gradually increases. The width of the end of the enlarged portion 29 apart from the recording medium insertion opening 12 is substantially equal to the width of the hole 19.

The synthetic resin portion 17 provided at the end of the sheet metal portion 16 is provided with a lock guide groove 30 and a lock concave groove 31. Lock guide groove 30 and lock groove 3
Reference numeral 1 denotes a recess formed from the surface of the synthetic resin portion 17 located inside the device main body 3. The lock guide groove 30 is
It is provided above the lock groove 31. The lock guide groove 30 has a slide extension 32 and a cross extension 33.

The slide extending portion 32 and the cross extending portion 33 are arranged in order along the sliding direction of the slide member 7 as the distance from the recording medium insertion opening 12 increases. The slide extending portion 32 and the cross extending portion 33 are connected to each other.

The slide extending portion 32 extends along the sliding direction of the slide member 7. The cross extension portion 33
It extends upward from the slide extension 32. Thus, the intersecting extending portion 33 extends from the sliding extending portion 32 along a direction intersecting the sliding direction.

The lock groove 31 has a horizontally extending portion 35 and an enlarged portion 36. Horizontally extending portion 35 and enlarged portion 3
6 are arranged in order along the sliding direction of the slide member 7 as the distance from the recording medium insertion opening 12 increases. The horizontal extending portion 35 and the enlarged portion 36 are connected to each other.

The horizontal extension 35 extends along the sliding direction of the slide member 7. The enlarged portion 36 is formed such that the width in the direction intersecting the sliding direction of the slide member 7 gradually increases as the distance from the horizontal extending portion 35, that is, the recording medium insertion opening 12, is increased.

The sheet metal portion 16 is provided with a pair of guide holes 18, a pair of holes 19, and a guide slope 22, and the synthetic resin portion 1 is provided.
7, a first guide groove 23, a second guide groove 27, a lock guide groove 30, and a lock concave groove 31 are provided. For this reason, the slide member 7 includes a pair of guide holes 18, a pair of holes 19, a guide slope 22, a first guide groove 23, a second guide groove 27, a lock guide groove 30, and a lock groove 31.

The transport unit 4 includes a roller arm 37 and a disc guide 38 as shown in FIGS.
And The roller arm 37 is disposed near the recording medium insertion port 12. Roller arm 37
Is an arm body 39 made of sheet metal or the like;
And

The arm body 39 has a longitudinal direction
Is formed in a band shape along the width direction of the. Arm body 3
9 is rotatably supported on the bottom wall 9 about one edge in the width direction. The center of rotation of the arm body 39 is along the width direction of the chassis 8. The arm body 39 is urged by a coil spring (not shown) in a direction in which the other edge in the width direction is separated from the bottom wall 9.

The roller 40 is rotatably supported by the other edge of the arm body 39. The center of rotation of the roller 40 is along the width direction of the chassis 8. Roller 40
A gear (not shown) is attached to one end of the.
When the other edge of the arm body 39 is separated from the bottom wall 9, the gear of the roller 40
Mesh with one of the four. The roller 40 is rotated by the rotational driving force of the motor 13 via the gear 14 and the like.

The disk guide 38 has a guide body 41 made of a sheet metal or the like, and a sliding member 42 attached to the guide body. The guide body 41 is formed in a band shape whose longitudinal direction is along the width direction of the chassis 8. The guide body 41 includes a pin 43 described below and the pin 4
The chassis 3 is slidably supported in the vertical direction by the guide hole 18 into which the chassis 3 enters. The sliding member 42 is made of a synthetic resin having a small friction coefficient. The sliding member 42 is formed in a thin plate shape. Sliding member 42
Is attached to the surface of the guide body 41 located inside the chassis 8.

The roller arm 37 and the disc guide 3
8 have pins 43 respectively. The pin 43 of the roller arm 37 protrudes from the widthwise end of the arm body 39 located on the far side in FIGS. 1 and 2 toward the peripheral wall 11 to which the slide member 7 is attached. The pin 43 of the roller arm 37 contacts the guide slope 22 of the slide member 7 when the arm body 39 is urged by a coil spring (not shown).

A pair of pins 43 of the disc guide 38 are provided at a widthwise end of the guide main body 41 located at the back side in FIGS. 1 and 2, and the front side of the guide main body 41 in FIGS. At one end in the width direction.
These pins 43 project from the guide body 41 toward the peripheral wall 11. The pins 43 of the disc guide 38 provided at a pair of end portions in the width direction located on the inner side of the guide body 41 in FIGS.
Pass through 8.

The roller arm 37 and the disc guide 38 having the above-described structure constitute a holding means. Therefore, the transport unit 4 includes a pair of holding means.

The clamp reproducing unit 5 includes a carriage chassis 45 and a clamp arm 46.
The carriage chassis 45 includes a chassis main body 47 made of sheet metal or the like, a rotary table 48 attached to the chassis main body 47, and an optical pickup unit (not shown) attached to the chassis main body 47. The chassis body 47 is formed in a substantially flat shape.

The turntable 48 is rotatably supported by the chassis body 47. The turntable 48 is a CD
It penetrates into the central holes 2a and 2b. Rotary table 48
Rotates the CDs 2a and 2b by a driving force of a motor or the like. The optical pickup unit includes an optical pickup for reading information recorded on the CDs 2a and 2b, a drive mechanism for moving the optical pickup toward and away from the rotary table 48, and the like.

The clamp arm 46 has an arm body 49 made of a sheet metal or the like, and a clamper 50. The arm body 49 is formed in a substantially flat plate shape. The carriage chassis 45 is supported by the chassis body 47 so as to be rotatable around an end portion away from the recording medium insertion port 12. The center of rotation of the arm body 49 is along the width direction of the chassis 8. When the arm body 49 approaches the chassis body 47, the chassis body 47 and the arm body 49
Become substantially parallel.

The clamper 50 is disposed at a position facing the turntable 48. The clamper 50 is formed in a disk shape and is rotatably supported by the arm body 49. When the arm body 49 is substantially parallel to the chassis body 47, the clamper 50
8 can be sandwiched between the CDs 2a and 2b. In addition,
In this specification, a position where the CDs 2a and 2b are sandwiched between the turntable 48 and the clamper 50 is defined as a reproduction position. The transport path described in the present specification is formed between the recording medium insertion port 12 and the reproduction position.

The clamp reproducing unit 5 having the above-described configuration is supported in the chassis 8 so as to be movable with respect to the main body 3 by a damper made of an elastic material such as rubber (not shown) and a coil spring. The clamp reproducing unit 5 is provided between the rotary table 48 and the clamper
D2a, 2b, CD2a, CD2a,
2b is rotated and the information in the CDs 2a and 2b is read by the optical pickup unit.

The clamp reproducing unit 5 moves with respect to the chassis 8 by the damper and the coil spring, even if the device main body 3 vibrates due to the vibration during the running of the automobile. As described above, the dampers and the coil springs cause the vibrations and the like during the running of the automobile to be reduced by the CDs 2a and 2d.
This prevents the operation of reading the information b from being adversely affected. Further, the clamp reproducing unit 5 includes a hook 5 described later.
As the lock of the lock pin 52 with respect to the device 4 is gradually released, the range in which the device 4 is movable with respect to the device main body 3 gradually increases.

The carriage chassis 45 and the clamp arm 46 each have a second pin 51. The second pins 51 of the carriage chassis 45 protrude toward the peripheral wall 11 from both ends in the width direction located on the rear side and the front side of the chassis main body 47 in FIGS. 1 and 2. When the lock member 44 is located at a lock position to be described later, the second pin 51 of the carriage chassis 45
It enters the guide groove 23. The second pin 51 of the carriage chassis 45 comes out of the first guide groove 23 when the lock member 44 is located at an unlock position described later.

The second pin 51 of the clamp arm 46 is connected to the peripheral wall 1 to which the above-described slide member 7 is attached from the widthwise end of the arm body 49 located on the far side in FIGS.
It protrudes toward 1. Second of the clamp arm 46
The pin 51 enters the second guide groove 27 when the lock member 44 is at the lock position. The second pin 51 of the clamp arm 46 comes out of the second guide groove 27 when the lock member 44 is located at the unlock position.

The carriage chassis 45 further includes
A lock pin 52 is provided. The lock pins 52 project from both ends of the chassis body 47 of the carriage chassis 45 toward the peripheral wall 11 on which the slide member 7 is mounted. The lock pin 52 is provided at the center of rotation of the relative rotation between the arm body 49 and the chassis body 47. The lock pin 52 enters the lock groove 31 when the lock member 44 is at the lock position. The lock pin 52 of the carriage chassis 45 is
Is located at the lock release position, it comes out of the lock groove 31.

The carriage chassis 45 and the clamp arm 46 having the above-described structure constitute second holding means. For this reason, the clamp reproducing unit 5 includes a pair of second holding means. Further, the lock pin 52
Is projected from one of the second holding means.

The lock member 44 is disposed near each of the peripheral walls 11 on which the slide member 7 is mounted. These lock members 44 are arranged near the peripheral wall 11 opposite to the peripheral wall 11 on which the recording medium insertion opening 12 is formed.

Each of the lock members 44 is made of a thin sheet metal or the like and has a substantially rectangular lock main body 53 in plan view.
And a hook-shaped hook portion 54 and a third pin 59 are integrally provided. The hook 54 extends in a direction away from one outer edge of the lock body 53 and then extends along the one outer edge.

The lock member 44 is rotatably supported by the bottom wall 9 about an end 58 of the lock body 53 that is away from the hook 54. The lock member 44 is rotated about the end 58 so that the hook 54 shown in FIG.
8 and the lock position where the lock pin 52 is unlocked by the hook 54 shown in FIG.

The third pin 59 projects from the lock body 53 toward the slide member 7. The third pin 59 is
It enters the lock guide groove 30 over the lock position and the unlock position.

The slide member 7 and the pin 4
The third pin 51, the second pin 51, and the third pin 59 constitute an interlocking unit. As will be described later, the CD 2 transported by the roller arm 37 and the disc guide 38 of the transport unit 4
a and 2b are sandwiched between the carriage chassis 45 of the clamp reproducing unit 5 and the clamp arm 46.

Then, the interlocking means constituted by these means
The roller arm 37 and the disk guide 38 are gradually separated from the CDs 2a and 2b so that the CDs 2a and 2b cannot contact the roller arm 37 and the disk guide 38, and the lock member 44 is moved from the locked position to the unlocked position. Move slowly.

The lock pin 52, the lock member 44 and the lock groove 31 constitute a lock means. The locking means constituted by these components is freely displaceable between a lock position for fixing the clamp reproducing unit 5 to the device main body 3 and an unlock position for allowing the clamp reproducing unit 5 to be movable relative to the device main body 3. It is.

As shown in FIG. 9, the disc centering mechanism 60 includes a link guide hole 61, a pair of centering arms 62 constituting the guide means described in this specification, and
The link 63 constituting the restricting means described in this specification, and the stopper arm 6 forming the blocking means described in this specification
4 is provided. The link guide hole 61 passes through the bottom wall 9 of the chassis 8. The link guide hole 61 is provided near the recording medium insertion opening 12 and at the center in the width direction of the chassis 8. The link guide hole 61 has the straight portion 6
5 and an arc portion 66.

The linear portion 65 is substantially linear along the transport direction K of the CDs 2a and 2b. The arc portion 66 is provided at the center of the straight portion 65 in the longitudinal direction. Arc section 66
Is formed so as to be concave from the edge of the linear portion 65 toward the peripheral wall 11 to which the slide member 7 is attached so as to increase the width of the linear portion 65 along the width direction of the chassis 8. The arc portion 66 has a substantially arc-shaped planar shape.

The pair of centering arms 62 are arranged near the recording medium insertion slot 12, respectively. The pair of centering arms 62 have the link guide hole 61 located between them. A pair of centering arms 62
Are spaced from each other along the width direction of the chassis 8.

Each of the pair of centering arms 62 has a band-shaped arm body 67 and a projecting pin 68. Arm body 6 of a pair of centering arms 62
The bottom wall 9 of the chassis 8 is rotatable so that both end portions 67a and 67b move closer to or away from (contact with or separate from) each other.
It is supported by. One end 67a of the arm body 67 is
It is arranged closer to the recording medium insertion opening 12 than the other end 67b. The arm body 67 is displaceable from the bottom in a displaceable manner between an engagement position in which the longitudinal direction shown in FIG. 9 is along the transport direction K and a release position shown in FIG. It is rotatably supported by the wall 9.

The protruding pin 68 protrudes from the one end 67 a of the arm body 67 toward the ceiling wall 10, that is, the inside of the recording medium insertion port 12. One of the pair of centering arms 62 has an engagement protrusion 69. The engagement protrusion 69 protrudes from the other end 67 b of the arm body 67 of the one centering arm 62 toward the ceiling wall 10, that is, the inside of the recording medium insertion port 12. The engagement protrusion 69 is provided on an edge portion of the arm body 67 located outside along the width direction of the chassis 8.

With the above-described configuration, the arm main body 67 of one centering arm 62 engages with a hook 73 described later on the engaging projection 69 at the engaging position shown in FIG. The arm body 67 of one centering arm 62 is shown in FIG.
The engagement between the engagement projection 69 and the hook 73 is released at the release position shown in FIG.

The link 63 has a pair of link arms 70
And a connecting pin 71 for connecting these link arms 70 to each other. Each of the link arms 70 has an arm body 67 at one end of the centering arm 62.
Is rotatably connected to the other end 67b. The connection pin 71 is formed in a column shape. The connection pin 71 rotatably connects the other ends of the pair of link arms 70 to each other, and penetrates into the link guide hole 61. The outer diameter of the connecting pin 71 is slightly smaller than the width of the linear portion 65 of the link guide hole 61. The link 63 is urged by urging means such as a coil spring (not shown) so that the centering arm 62 is located at the above-described engagement position.

With the above-described configuration, the link 63 has the other end 67b approaching when the one end 67a separates from each other, and the other end 67b when the one end 67a approaches the other.
The arm body 67 is rotated synchronously so that b is separated from each other. Thus, the link 63 is connected to the arm body 67
Are rotated in synchronization with each other so that a pair of centering arms 6
2 is displaced between the engagement position and the release position.

When the protruding pin 68 of one of the pair of centering arms 62 is pushed away from the protruding pin 68 of the other centering arm 62, the connecting pin 71 of the link 63 is turned into an arcuate portion 66. Invade. The link 63 prevents the projecting pins 68 of the pair of centering arms 62 from being separated from each other after the connecting pin 71 has entered the arc portion 66. That is, the link 63 restricts the rotation of the arm body 67 from the state where the connecting pin 71 has entered the arc portion 66.

Further, when both protruding pins 68 of the pair of centering arms 62 are pushed in a direction away from each other,
The connecting pin 71 moves in the linear portion 65 without entering the arc portion 66. In this way, when the projecting pin 68 of one of the centering arms 62 is pushed in a direction away from the projecting pin 68 of the other centering arm 62, the link 63 moves from the state where the connecting pin 71 has entered the arc portion 66. The rotation of the arm body 67 is restricted.
Then, when the two projecting pins 68 are pushed in a direction away from each other, the link 63 moves to the center link arm 62.
Is displaced from the engagement position toward the release position.

When the connecting pin 71 has entered the arc portion 66, the large-diameter CD 2 a can contact both the projecting pins 68. In a state where the connecting pin 71 has entered the arc portion 66, the small-diameter CD 2 b is attached to one of the projecting pins 68.
, And cannot contact both projecting pins 68 at the same time.

The stopper arm 64 is arranged outside the main body 3 along the width direction of the chassis 8 from one centering arm 62 having the engaging projection 69. Therefore, the stopper arm 64 is disposed between the one centering arm 62 and the peripheral wall 11 on which the slide member 7 near the one centering arm 62 is mounted.

The stopper arm 64 includes a second arm main body 72 rotatably supported on the bottom wall 9 of the chassis 8, a hook 73, and a stopper projection 74. The second arm body 72 is rotatable between a position where the hook 73 shown by a solid line in FIG. 9 is engaged with the engagement protrusion 69 and a position shown by a dotted line in FIG. The second arm body 72 is urged by an urging means such as a torsion spring (not shown) toward a position where the hook 73 engages with the engaging projection 69.

The hook 73 has a protrusion 75 extending from the second arm main body 72 toward one centering arm 62.
And an extending portion 76 extending from the protruding portion 75 to the back of the device main body 3 along the transport direction K. The hook portion 73 has an engagement protrusion 69 along the transport direction K.
Outside of the device body 3 (ie, closer to the recording medium insertion port 12)
In the state in which the engaging projection 69 is interposed between the extending portion 76 and the second arm body 72, the engaging projection 69 can be engaged.

The stopper projection 74 is located in the transport path, and can contact the large-diameter CD 2a or the small-diameter CD 2b transported in the transport path.

In the stopper arm 64 having the above-described configuration, the rotation of the second arm main body 72 is restricted by the engagement of the hook portion 73 and the engaging projection 69. That is, when the rotation of the arm body 67 of the one centering arm 62 is restricted, the stopper arm 64 maintains the engagement state between the hook 73 and the engagement projection 69 so that the second arm body 72 Do not rotate. Therefore, the stopper projection 74
Is kept in a state of being located in the transport path. As a result, even if the small-diameter CD 2b tries to deviate from the transport path, the stopper projection 74 is prevented from coming into contact with the small-diameter CD 2b and deviating from the transport path.

When the arm body 67 of the centering arm 62 is displaced to the release position, the engagement state between the hook 73 and the engagement projection 69 is released, and the second arm body 72 rotates. It is possible. Therefore,
Even if the stopper projection 74 comes into contact with the large-diameter CD 2a being transported in the transport path, the second arm main body 72 rotates to retract the stopper projection 74 out of the transport path. Thus, the stopper projection 74 does not hinder the conveyance of the large-diameter CD 2a.

Next, the recording medium reproducing apparatus 1 having the above-described configuration will be described.
Will be described. First, CD2a, 2
In a state in which the recording medium b is not inserted into the device main body 3, as shown in FIG.
The furthest from 2. Pin 43 of roller arm 37
Is in contact with an end of the guide slope 22 near the recording medium insertion opening 12. The pin 43 of the disc guide 38 is located in the horizontal extension 20a. Thus, the roller arm 37 and the disk guide 38 are close to each other.
The gear attached to the end of the roller 40 of the roller arm 37 meshes with the gear 14 of the drive source 6.

When the CDs 2a and 2b are not inserted into the main body 3, the second pin 51 of the carriage chassis 45 is connected to the recording medium of the horizontal portion 24 of the first guide groove 23, as shown in FIG. It is located at the end near the insertion opening 12. The second pin 51 of the clamp arm 46 is located at an end of the horizontal portion 27 a of the second guide groove 27 near the recording medium insertion opening 12. Thus, the carriage chassis 45
And the clamp arm 46 are separated from each other.

Further, in a state where the CDs 2a and 2b are not inserted into the main body 3, as shown in FIG. 6, the lock pin 52 is located near the recording medium insertion opening 12 of the horizontally extending portion 35 of the lock groove 31. It is located at the end. Lock member 4
The fourth hook 54 is locked to the lock pin 52, and the third pin 59 of the lock member 44 is located at the end of the slide extension 32 of the lock guide groove 30 near the recording medium insertion opening 12. are doing. Thus, the hook 54 is locked to the lock pin 52, and the lock member 44 fixes the clamp reproducing unit 5 to the device main body 3. The disk centering mechanism 60 is in the state shown in FIG.

First, the user of the recording medium reproducing apparatus 1 inserts the CDs 2a and 2b into the recording medium insertion slot 12. Large diameter C
When the D2a is inserted into the recording medium insertion slot 12, first, the large-diameter CD 2a comes into contact with both the projecting pins 68. The centering arm 6 is moved in the direction in which
2 is rotated. The arm body 67 of one centering arm 62 rotates toward the release position.

When the large-diameter CD 2a is inserted into the recording medium insertion slot 12 in the state shown in FIG. 6, the motor 13 rotates, for example, in the normal rotation direction, and the roller 40 rotates. Roller 40 rotated by driving force of motor 13
Between the sliding member 42 of the disc guide 38 and the large-diameter CD
2a is sandwiched. Since the roller 40 is rotating, the large-diameter CD 2a is transported between the carriage chassis 45 and the clamp arm 46, that is, toward the reproduction position.

Then, the engagement projection 69 gradually separates from the projection 75 and tries to get out of the hook 73. Since the large-diameter CD 2a contacts both the projecting pins 68 even at the release position, the arm main body 67 of the one centering arm 62 is displaced to the release position without the connecting pin 71 entering the arc portion 66. Engagement protrusion 6 from inside hook portion 73
9, the engagement between the hook 73 and the engagement projection 69 is released, as shown in FIG.

Further, by the rotation of the roller 40 and the like,
When transported toward the playback position, a large-diameter CD2
a contacts the stopper projection 74 of the stopper arm 64. Since the engagement between the hook portion 73 and the engagement protrusion 69 is released, the second arm main body 72 of the stopper arm 64 is rotatable. Therefore, the stopper arm 64 gradually rotates toward the position shown by the dotted line in FIG. 9 in accordance with the transport operation of the large-diameter CD 2a.

Then, the large-diameter CD 2 a comes into contact with the seesaw member, and the seesaw member pushes the rack 15 toward the recording medium insertion opening 12. The rack 15 meshes with one gear 14, and the slide member 7 starts to slide gradually toward the recording medium insertion opening 12.

The pin 43 of the roller arm 37 moves along the guide slope 22 and gradually approaches the bottom wall 9. The pin 43 of the disc guide 38 enters the inclined extension 21a from the horizontal extension 20a. Pin 4 of disc guide 38
3 moves along the inclined extending portion 21a and gradually moves to the bottom wall 9;
Approach. Thus, the disc guide 38 and the roller arm 37 gradually approach the bottom wall 9 first.

Further, the second pin 51 of the carriage chassis 45 enters the upper inclined portion 25 via the horizontal portion 24. Then, the second pin 51 of the carriage chassis 45
Gradually approaches the ceiling wall 10 along the upper inclined portion 25. The second pin 51 of the clamp arm 46 is
Through a, it gradually approaches the bottom wall 9 along the downward inclined portion 28. Thus, the carriage chassis 45 and the clamp arm 46 gradually approach.

Furthermore, the lock pin 52 is
Along with the slide member 7. The third pin 59 of the lock member 44 moves relatively to the slide member 7 along the slide extension 32 of the lock guide groove 30. The lock member 44 maintains the state locked to the lock pin 52.

The large-diameter CD 2 a is conveyed into the apparatus main body 3, and the center hole of the large-diameter CD 2 a is located between the rotary table 48 and the clamper 50. Then, the pin 43 of the roller arm 37 moves along the guide slope 22 and gradually approaches the bottom wall 9. The pin 43 of the disc guide 38
It penetrates into the inclined extension part 21b from the inclined extension part 21a.
The pin 43 of the disc guide 38 moves along the inclined extending portion 21b and gradually approaches the ceiling wall 10. Thus,
The disc guide 38 and the roller arm 37 are separated from each other.

Further, the second pin 51 of the carriage chassis 45 gradually approaches the ceiling wall 10 along the upper inclined portion 25. The second pin 51 of the clamp arm 46 gradually approaches the bottom wall 9 along the downward inclined portion 28. Thus, the carriage chassis 45 and the clamp arm 46 gradually approach each other.

Then, the carriage chassis 45 and the clamp arm 46 approach each other, and
8 and the clamper 50, the large-diameter CD 2 a is sandwiched between the large-diameter CD 2 a and the roller 40 of the roller arm 37.
And the disk guide 38 are separated. Thus, at the same time that the transport unit 4 releases the large-diameter CD 2a, the clamp reproducing unit 5 clamps (clamps) the large-diameter CD 2a, and the large-diameter CD 2a is positioned at the reproduction position.

When the clamp reproducing unit 5 holds (clamps) the large-diameter CD 2a, the pin 43 of the roller arm 37 is in contact with the central portion of the guide slope 22 as shown in FIG. The pin 43 of the disc guide 38 is located at the upper end of the inclined extension 21b. Thus, the roller arm 37 and the disk guide 38 are gradually separated.

The clamp reproducing unit 5 is a large-diameter CD.
7, the second pin 51 of the carriage chassis 45 is located at an end of the upper inclined portion 25 of the first guide groove 23 away from the recording medium insertion port 12, as shown in FIG. are doing. Second of the clamp arm 46
The pin 51 is located in the enlarged portion 29 of the second guide groove 27. Thus, the carriage chassis 45 and the clamp arm 46 are in a state of approaching each other.

Further, the clamp reproducing unit 5 has a large diameter C
In a state where D2a is held (clamped), as shown in FIG.
Located within. The third pin 59 of the lock member 44 is
The slide extending portion 32 and the cross extending portion 33 of the lock guide groove 30 are located at intersections where they intersect with each other. For this reason, the lock member 44 is slightly rotated from the lock position in the direction in which the engagement of the hook portion 54 with the lock pin 52 is slightly released. Thus, the lock member 44 is slightly displaced from the lock position toward the unlock position.

Further, when the motor 13 is driven to rotate forward,
When the slide member 7 is moved toward the recording medium insertion port 12, the pin 43 of the roller arm 37 is moved to the guide slope 22.
And gradually approach the bottom wall 9. The pin 43 of the disc guide 38 moves along the inclined extending portion 21b, gradually approaches the ceiling wall 10, and then enters the horizontal extending portion 20a. Thus, the disc guide 38 and the roller arm 37 are further separated from each other.

Further, after the second pin 51 of the carriage chassis 45 enters the enlarged portion 26 from the upper inclined portion 25,
It comes out of the first guide groove 23. Clamp arm 46
The second pin 51 comes out of the second guide groove 27.
Thus, the carriage chassis 45 and the clamp arm 4
6 are kept close to each other.

Further, the lock pin 52 is connected to the lock groove 31.
Get out of. Since the third pin 59 of the lock member 44 has penetrated into the intersecting extending portion 33 of the lock guide groove 30, the third pin 59 rotates about the end portion 58 by the movement of the slide member 7 toward the recording medium insertion opening 12. Is done. Then, the lock pin 52 completely comes out of the hook portion 54, and the locking of the hook portion 54 to the lock pin 52 is released. Thus, the lock of the lock pin 52 by the lock member 44 is released, and the lock member 44 is displaced to the lock release position shown in FIG.

In the unlocked position, as shown in FIG.
The pin 43 of the roller arm 37 is in contact with the end of the inclined guide surface 22 away from the recording medium insertion port 12. The pin 43 of the disc guide 38 is located at an end of the horizontally extending portion 20b away from the recording medium insertion opening 12. Thus, the roller arm 37 and the disc guide 38 are separated from each other. The arm body 39 is parallel to the bottom wall 9 and the roller arm 37 is located near the bottom wall 9. The guide body 41 is parallel to the ceiling wall 10, and the disc guide 38 is located near the ceiling wall 10. The stopper arm 6 rotated to the position shown by the dotted line in FIG.
When the roller arm 37 is positioned near the bottom wall 9, the roller 4 is locked by a projection pin (not shown) provided on the arm body 39 of the roller arm 37. That is, the stopper projection 74 is kept in a retracted state from the transport path. Then, the stopper projection 74 does not come into contact with the large-diameter CD 2a. Further, the large-diameter CD 2a does not come into contact with the projecting pin 68 of the centering arm 62, and the centering arm 62 rotated to the release position is displaced to the engagement position by the urging force of the coil spring. At this time, the hook 73 and the engaging projection 69 are not engaged.

In the unlocked position, as shown in FIG. 8, the second pin 51 of the carriage chassis 45 comes out of the first guide groove 23. The second pin 51 of the clamp arm 46 comes out of the second guide groove 27. The lock pin 52 comes out of the lock groove 31. The third pin 59 of the lock member 44 is located at the intersection extending portion 33 of the lock guide groove 30.

Since the locking of the lock member 44 to the lock pin 52 is released, the clamp reproducing unit 5 is movable with respect to the main body 3 by the above-described damper and coil spring (not shown). In this state, the recording medium reproducing apparatus 1 extracts information recorded on the large-diameter CD 2a and outputs the information as audio.

When the clamp reproducing unit 5 shown in FIG. 7 is displaced from the state in which the large-diameter CD 2a is clamped to the unlock position shown in FIG. 8, the lock member 44 gradually rotates about the end 58. Then, the lock pin 52 gradually comes out of the lock groove 31 gradually, and the locking of the lock member 44 to the lock pin 52 is gradually released. Further, the roller arm 37 and the disc guide 3
8 gradually moves away from the large-diameter CD 2a.

Further, while the lock member 44 is displaced from the lock position toward the unlock position, the lock pin 52 becomes movable within a region surrounded by the enlarged portion 36 and the hook portion 54 and the like. . While the lock member 44 is displaced from the lock position toward the unlock position, the lock member 44 rotates about the end 58, so that the region surrounded by the enlarged portion 36, the hook portion 54, and the like is gradually formed. To expand.

Further, while the lock member 44 is displaced from the lock position to the unlock position, the slide member 7 moves toward the recording medium insertion opening 12, so that the second pin is moved to the first and second positions. It gradually escapes from the second guide grooves 23, 27. First and second guide grooves 23, 27
During the escape, the second pin 51 holds the enlarged portion 26,
29 can be moved freely. For this reason, the second pin 51 is in the middle of exiting from the first and second guide grooves 23 and 27.
The movable area gradually expands.

For this reason, while the lock member 44 is displaced from the lock position toward the unlock position, the area in which the clamp reproducing unit 5 is movable with respect to the apparatus main body 3 gradually increases. However, in the above-described slide member 7 and the like, the large-diameter CD 2a clamped by the clamp reproducing unit 5 which is movable by the displacement of the lock member 44 or the like cannot contact the roller arm 37 and the disk guide 38 of the transport unit 4. Thus, the lock member 44 is displaced.

As described above, when the clamp reproducing unit 5 clamps the large-diameter CD 2a, the roller arm 37 of the transport unit 4 and the disk guide 38 gradually separate from the large-diameter CD 2a. The lock of the lock member 44 is gradually released. When the lock member 44 is displaced to the unlock position, the clamp reproducing unit 5 can read information recorded on the large-diameter CD 2a.

The recording medium reproducing apparatus 1 has a large-diameter CD 2a
When the large-diameter CD 2a is ejected from the device main body 3 after the reproduction of the large-diameter CD 2a is completed, the motor 13 is driven, for example, in the reverse direction to the previous direction, for example, so that the slide member 7 is Move in the direction of release.

Then, the lock member 44 gradually rotates from the unlock position to the lock position, and the range in which the clamp reproducing unit 5 can move with respect to the apparatus main body 3 gradually narrows. Roller arm 37 and disc guide 38
Gradually approach each other. Roller 4 of roller arm 37
When the large-diameter CD 2a is sandwiched between the disk CD and the disc guide 38, the carriage chassis 45 and the clamp arm 46 are separated from the large-diameter CD 2a. The clamp of the clamp reproducing unit 5 is released. By the rotation of the roller 40, the large-diameter CD 2 a is discharged out of the apparatus main body 3 through the recording medium insertion opening 12.

The roller 40 of the roller arm 37 has a large diameter CD.
When the stopper arm 64 is moved to the position sandwiching 2a, the locked state of the stopper arm 64 is released, and the stopper arm 64 rotates toward the position shown by the solid line in FIG. 9 by the urging force of the torsion spring. Then, the stopper projection 74 comes into contact with the large-diameter CD 2 a being conveyed toward the outside of the apparatus main body 3 by the rotation of the roller 40. The large-diameter CD 2a is the main unit 3
When the centering arm 62 is conveyed outward, it comes into contact with the protruding pin 68 of the centering arm 62 and displaces the centering arm 62 to the release position. At this time, the hook 73 and the engagement protrusion 69
Are not engaged, the centering arm 62 can be displaced to the release position. When the large-diameter CD 2a is completely discharged out of the device main body 3, the contact state between the projecting pin 68 and the large-diameter CD 2a is released, and the centering arm 62 is displaced to the engagement position by the urging force of the coil spring. At the same time, the stopper arm 64 is displaced to the position shown by the solid line in FIG. 9, and the engaging projection 69 enters the hook 73. Thus, the hook 73 and the engaging projection 69 are engaged again.

As described above, even when the large-diameter CD 2a is ejected out of the apparatus main body 3, the ejection of the large-diameter CD 2a is not hindered because the stopper projection 74 of the stopper arm 64 is retracted from the transport path.

When the small-diameter CD 2b is inserted into the apparatus main body 3 through the recording medium insertion port 12, first, the small-diameter CD 2b
Contacts both protruding pins 68. The centering arm 62 is rotated in a direction in which the protruding pins 68 move away from each other.
Then, in a state where the connecting pin 71 of the link 63 has entered the arc portion 66, the small-diameter CD 2b cannot contact both the projecting pins 68 at the same time.
Even if the second arm body 67 is rotated toward the release position, the connecting pin 71 remains in the arc portion 66. For this reason, the engagement between the engaging projection 69 and the hook 73 is not released. Then, the small-diameter CD 2b is conveyed toward the reproduction position in the same manner as in the case of the large-diameter CD 2a described above.

The small-diameter CD 2b may be inserted into the recording-medium insertion opening 12 near the stopper arm 64 as shown in FIG. At this time, the small diameter CD 2b contacts only the protruding pin 68 of the one centering arm 62. Even if the arm main body 67 of the one centering arm 62 is rotated toward the release position, the small-diameter CD 2b cannot contact both the projecting pins 68 at the same time when the connecting pin 71 has entered the arc portion 66. The connecting pin 71 enters the arc portion 66.
Then, the engagement between the engaging projection 69 and the hook 73 is not released.

Therefore, when the small-diameter CD 2b is transported toward the reproduction position, the one centering arm 62
Arm body 67 is kept at the engagement position. Then, as shown in FIG. 11, even if the small-diameter CD 2b contacts the stopper projection 74, the rotation of the stopper arm 64 is restricted, so that the small-diameter CD 2b is transported toward the reproduction position without deviating from the transport path. You.

When the small-diameter CD 2b is ejected from the apparatus main body 3, the small-diameter CD 2b is ejected in the same manner as the large-diameter CD 2a.
Even if an obstacle is placed near the recording medium insertion port 12 when the recording medium is ejected, the engagement protrusion 69 and the hook 7
3, the small-diameter CD 2b is
As shown in FIG. 11, the centering arm 62 is supported by the protruding pin 68 and the stopper projection 74. Then, the small-diameter CD 2b moves out of the transport path and
Is prevented from invading the back of the vehicle.

As described above, the pair of centering arms 6
2 guides the CDs 2a and 2b from the recording medium insertion opening 12 to the reproduction position, and also guides the CDs 2a and 2b from the reproduction position to the recording medium insertion opening 12. When the projecting pin 68 of one of the pair of centering arms 62 is pushed away from the projecting pin 68 of the other centering arm 62, the link 63 is engaged with the engaging projection 69 and the hook 73. The pair of centering arms 62 is restricted from being displaced with respect to the device body 3 so that the engagement with the centering arm 62 is not released.

Further, when the two projecting pins 68 of the pair of centering arms 62 are pushed in a direction away from each other, the link 63 is moved until the engagement between the engaging projection 69 and the hook 73 is released.
2 is allowed to be displaced with respect to the device main body 3. That is, the engagement between the engagement projection 69 and the hook 73 is released.

According to this embodiment, when the small-diameter CD 2b is transported, the link 63 positions the stopper arm 64 in the transport path. Also, the stopper arm 64 remains engaged with the one centering arm 62. For this reason, the displacement of the stopper arm 64 with respect to the device main body 3 is restricted. Therefore, the stopper arm 64
The small-diameter CD 2b is reliably prevented from coming off the transport path. Therefore, it is possible to reliably prevent the CDs 2a and 2b from coming off the transport path.

When the large-diameter CD 2a is transported, the engagement between the stopper arm 64 and one of the centering arms 62 is released. For this reason, the stopper arm 64
Is allowed relative to the device body 3. Therefore,
The stopper arm 64 does not hinder the transport operation of the large-diameter CD 2a.

The hook 73 of the stopper arm 64 engages with the engaging projection 69 of one centering arm 62 along the carrying direction. The centering arm 62 is rotatably supported by the device main body 3 such that both ends 67a and 67b of the arm main body 67 are separated from each other. Further, when the CDs 2a and 2b are inserted into the device body 3,
The centering arm 62 is rotated in a direction in which the protruding pins 68 move away from each other.

First, when the large-diameter CD 2a is inserted into the apparatus main body 3, the centering arm 62 is rotated in a direction in which the projecting pins 68 move away from each other. Then, the engagement protrusion 69 moves toward the inside of the device main body 3 and approaches the other centering arm 62. Then
The engaging projection 69 comes out of the hook 73.

Therefore, when the large-diameter CD 2a is transported into the apparatus main body 3, the engagement between the stopper arm 64 and one of the centering arms 62 can be reliably released. For this reason, the stopper arm 64 can be freely rotatable with respect to the device main body 3. Therefore, the transport operation of the large-diameter CD 2a is not hindered by the stopper arm 64 or the like.

When the protruding pin 68 of one of the centering arms 62 is pushed in a direction away from the other centering arm 62, the connecting pin 71 enters the circular arc portion 66, and the engaging projection 69 and the hook 73 Remain engaged. Therefore, when the small-diameter CD 2b is transported, the engaging projection 69 and the hook 73 remain engaged. For this reason,
The displacement of the stopper arm 64 with respect to the device main body 3 can be reliably restricted. Therefore, the stopper arm 64
The small-diameter CD 2b can be more reliably prevented from coming off the transport path. Therefore, it is possible to reliably prevent the CDs 2a and 2b from coming off the transport path.

When the protruding pins 68 of both centering arms 62 are pushed away from each other, the engagement between the engaging projection 69 and the hook 73 is released. Therefore, when the large-diameter CD 2a is transported, the engagement between the engaging projection 69 and the hook 73 is reliably released. Therefore, when the large-diameter CD 2a is inserted, the stopper arm 64 can be reliably rotated with respect to the device main body 3. Therefore, the stopper arm 64 does not more reliably hinder the transport operation of the large-diameter CD 2a.

While the roller arm 37 and the disc guide 38 of the transport unit 4 are separated from the CDs 2a and 2b, the lock member 44 and the like gradually move from the locked position to the unlocked position. Therefore, the CD in the device body 3
It is possible to reduce the time required from the insertion of 2a, 2b to the reading of the information recorded on the CDs 2a, 2b.

Next, a recording medium reproducing apparatus 1 according to a second embodiment of the present invention will be described with reference to FIGS. The same components as those in the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted. In the present embodiment, the disc centering mechanism 60 does not have the engaging projection 69 on one centering arm 62 and does not have the hook 73 on the stopper arm 64.
For this reason, in the present embodiment, the centering arm 62 and the stopper arm 64 are not engaged.

In this embodiment, the stopper arm 64 is formed in a rod shape and is rotatably supported by the arm body 49 of the clamp arm 46, as shown in FIG. The stopper arm 64 is connected to the clamp arm 46.
Is rotatably supported by the chassis 8, that is, the device body 3.

The stopper arm 64 is provided at the end of the arm body 49 of the clamp arm 46 near the peripheral wall 11. The stopper arm 64 has one end portion 80 shown in FIG. 13 within the transport path and the one end portion 80 shown in FIG. 16 outside the transport path, and the other end portion 81 is rotatable (displaceable). ) Is supported. The stopper arm 64 is moved by a torsion spring 82 as an urging means.
As shown in FIG. 13, one end 80 is urged so as to be located in the transport path.

When the small-diameter CD 2b is inserted into the main body 3 of the apparatus, if the small-diameter CD 2b is inserted near the stopper arm 64 of the recording medium insertion slot 12, the small-diameter CD 2b contacts one end 80 of the stopper arm 64. . At this time, as shown in FIG. 14, at a contact point Sb between the small-diameter CD 2b and the stopper arm 64, a line segment L formed by connecting one end 80 and the other end 81 of the stopper arm 64 (in FIG. 14 is located on the back side of the device main body 3 along the transport direction K with respect to the normal Mb of the small diameter CD 2b (shown by a two-dot chain line in FIG. 14).

When the small-diameter CD 2b is conveyed into the apparatus main body 3, the force applied to the stopper arm 64 is equal to the normal M
along b. Therefore, the stopper arm 64 is about to rotate around the other end 81 along the arrow Nb in FIG. 14, so that the one end 80 remains in the transport path. Then, the small-diameter CD 2b is transported to the reproduction position without deviating from the transport path.

When the large-diameter CD 2 a is inserted into the apparatus main body 3, the large-diameter CD 2 a contacts one end 80 of the stopper arm 64 of the recording medium insertion slot 12. At this time, as shown in FIG. 15, at a contact point Sa between the large-diameter CD 2a and the stopper arm 64, a line segment L formed by connecting one end 80 and the other end 81 of the stopper arm 64 (see FIG. 15). Is located closer to the recording medium insertion opening 12 along the transport direction K than the normal line Ma of the large-diameter CD 2a (shown by a two-dot chain line in FIG. 15).

When the large-diameter CD 2a is transported into the apparatus main body 3, the force applied to the stopper arm 64 is equal to the normal M
Along a. Therefore, the stopper arm 64 is rotated about the other end 81 along the arrow Na in FIG. 14 so that the one end 80 is separated from the transport path. Then, without being hindered by the stopper arm 64, the large-diameter CD 2a is transported to the reproduction position as shown in FIG.

As described above, when the small-diameter CD 2b is transported into the apparatus main body 3, the stopper arm 64 of the present embodiment is maintained in a state where one end 80 is located on the transport path. When the large-diameter CD 2 a is transported into the apparatus main body 3, the stopper arm 64 of the present embodiment has one end 8.
0 is rotated in a direction deviating from the transport path, and one end 8
0 is positioned outside the transport path.

According to the present embodiment, when the small-diameter CD 2b is conveyed, the displacement of the stopper arm 64 is restricted with the one end 80 positioned in the conveyance path. Therefore, one end 80 of the stopper arm 64 is positioned in the transport path. The stopper arm 64 is a small-diameter CD
2b is reliably prevented from deviating from the transport path. Therefore, it is possible to reliably prevent the CDs 2a and 2b from coming off the transport path.

When the large-diameter CD 2a is transported, the rotation of the stopper arm 64 is allowed, and the one end 80 is positioned outside the transport path. Therefore, the stopper arm 64 does not hinder the transport operation of the large-diameter CD 2a.

When the large-diameter CD 2a is inserted into the apparatus main body 3, the line segment L is located closer to the recording medium insertion opening 12 than the normal Ma of the large-diameter CD 2a. Therefore, large-diameter CD
When the one end 80 is pushed by the large-diameter CD 2a in accordance with the operation of transporting the 2a into the apparatus main body 3, the stopper arm 64 surely rotates in a direction in which the one end 80 deviates from the transport path. Therefore, the large-diameter CD 2a is
When the sheet is conveyed inside, the one end portion 80 comes off the conveyance path. Therefore, the stopper arm 64 is provided with the large-diameter CD2.
The transfer operation of a is not hindered.

Further, when the small-diameter CD 2b is inserted into the device main body 3, the line segment L is located on the back side of the device main body 3 with respect to the normal Mb of the small-diameter CD 2b. For this reason, small diameter CD
Even when the one end 80 is pushed by the small-diameter CD 2b in accordance with the operation of transporting the 2b into the apparatus main body 3, the stopper arm 64 does not rotate in a direction in which the one end 80 departs from the transport path.

Therefore, when the small-diameter CD 2b is conveyed into the apparatus main body 3, one end 8 of the stopper arm 64
0 is positioned in the transport path. Therefore, the stopper arm 64 reliably prevents the small-diameter CD 2b from coming off the transport path. Therefore, it is possible to reliably prevent the CDs 2a and 2b from coming off the transport path.

[0163]

As described above, according to the first aspect of the present invention, when a small-diameter disk-shaped recording medium is conveyed, the restricting means restricts the displacement of the blocking means and positions it in the conveying path. Therefore, the blocking means reliably prevents the small-diameter disk-shaped recording medium from coming off the transport path. Therefore, it is possible to reliably prevent the recording medium from deviating from the transport path.

According to the second aspect of the present invention, when a small-diameter disk-shaped recording medium is transported, its displacement is restricted while the stopper arm is engaged with one of the centering arms. For this reason, the stopper arm reliably prevents the small-diameter disk-shaped recording medium from coming off the transport path. When the large-diameter disk-shaped recording medium is transported, the engagement between the stopper arm and one of the centering arms is released. Accordingly, the stopper arm reliably prevents the small-diameter disk-shaped recording medium from coming off the transport path, and does not hinder the transport operation of the large-diameter disk-shaped recording medium.

According to the third aspect of the present invention, the hook of the stopper arm is engaged with the engaging projection of one centering arm along the direction in which the disk-shaped recording medium is carried in.
The centering arm is rotatably supported by the device main body such that both ends of the arm main body contact and separate from each other. Further, when the disk-type recording medium is inserted into the apparatus main body, the centering arm is rotated in a direction in which the protruding pins move away from each other.

First, when a large-diameter disk-type recording medium is inserted into the apparatus main body, the centering arm is rotated in a direction in which the protruding pins are separated from each other. Then, the engagement protrusion approaches the other centering arm while moving toward the inside of the device main body. Then, the engagement protrusion comes out of the hook.

Therefore, when the large-diameter disk-shaped recording medium is transported, the engagement between the stopper arm and one of the centering arms can be reliably released. For this reason, the displacement of the stopper arm with respect to the device body can be reliably allowed. Therefore, in addition to being able to prevent the recording medium from deviating from the transport path, the transport operation of the large-diameter disk-type recording medium is not prevented.

According to the fourth aspect of the present invention, when the projecting pin of one of the centering arms is pushed in a direction away from the other centering arm, the engaging projection and the hook remain engaged. For this reason, when the small-diameter disk-shaped recording medium is transported, the engagement projection and the hook remain engaged. For this reason, the displacement of the stopper arm with respect to the device main body can be reliably controlled. Therefore, it is possible to more reliably prevent the small-diameter disk-shaped recording medium from coming off the transport path by the stopper arm. Therefore, it is possible to reliably prevent the recording medium from deviating from the transport path.

When the protruding pins of both centering arms are pushed away from each other, the engagement between the engaging projection and the hook is released. Therefore, when the large-diameter disk-shaped recording medium is inserted into the main body of the device, the engagement between the engaging projection and the hook is released. For this reason, the displacement of the stopper arm with respect to the device body is allowed. Therefore, the stopper arm does not more reliably hinder the conveyance operation of the large-diameter disk-shaped recording medium.

According to the fifth aspect of the present invention, when a small-diameter disk-shaped recording medium is transported, the blocking means is positioned in the transport path. Therefore, the blocking means reliably prevents the small-diameter disk-shaped recording medium from coming off the transport path. Therefore, it is possible to reliably prevent the recording medium from deviating from the transport path.

When a large-diameter disk-shaped recording medium is transported, the blocking means is positioned outside the transport path. Therefore, the blocking means does not hinder the transport operation of the large-diameter disk-shaped recording medium.

According to a sixth aspect of the present invention, when the large-diameter disk-shaped recording medium is inserted into the apparatus main body, a line connecting one end and the other end of the stopper arm is formed in the large-diameter disk-shaped recording medium. It is located closer to the recording medium insertion opening than the normal line of the recording medium.

For this reason, when one end is pushed along the normal line of the large-diameter disk-shaped recording medium in accordance with the operation of conveying the large-diameter disk-shaped recording medium into the apparatus body, the one end is moved from the conveyance path. The stopper arm surely rotates in the direction in which it comes off (exits). Therefore, when the large-diameter disk-shaped recording medium is conveyed into the apparatus main body, one end of the stopper arm comes off (exits) from the conveyance path. Therefore, the stopper arm does not hinder the transport operation of the large-diameter disk-shaped recording medium.

When the small-diameter disk-type recording medium is inserted into the main body of the apparatus, the line connecting one end and the other end of the stopper arm is shifted from the normal line of the small-diameter disk-type recording medium by the line. It is located at the back of the device body along the transport direction.

For this reason, even if one end is pushed along the normal line of the small-diameter disk-type recording medium as the small-diameter disk-type recording medium is conveyed into the main body of the apparatus, the one end is removed from the conveying path. The stopper arm does not rotate in the direction.
Therefore, when the small-diameter disk-shaped recording medium is transported into the apparatus main body, one end of the stopper arm is kept in a state of being located on the transport path. Therefore, the small-diameter disk-shaped recording medium is reliably prevented from coming off the transport path by the stopper arm. Therefore, it is possible to reliably prevent the recording medium from deviating from the transport path.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a recording medium reproducing apparatus according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing an apparatus main body of the recording medium reproducing apparatus shown in FIG.

FIG. 3 is a perspective view of the apparatus main body of the recording medium reproducing apparatus shown in FIG. 1 as viewed from another direction.

FIG. 4 is a front view showing a slide member and the like of the recording medium reproducing device shown in FIG. 1;

FIG. 5 is a side view of a clamp reproducing unit of the recording medium reproducing apparatus shown in FIG.

FIG. 6 is an explanatory diagram of a state where a CD is not inserted in the recording medium reproducing device shown in FIG. 1 as viewed from a side.

FIG. 7 is an explanatory diagram showing a state where the clamp reproducing unit of the recording medium reproducing apparatus shown in FIG. 1 clamps a CD as viewed from a side.

8 is an explanatory diagram of a state where a lock member or the like of the recording medium reproducing device shown in FIG. 1 is displaced to an unlock position, as viewed from a side.

FIG. 9 is a plan view showing a disc centering mechanism and the like of the recording medium reproducing device shown in FIG. 1;

10 is a plan view showing a state where a small-diameter CD is inserted between a pair of centering arms of the disk centering mechanism shown in FIG. 9;

11 is a plan view showing a state where a small-diameter CD inserted between a pair of centering arms shown in FIG. 10 is in contact with a stopper projection of a stopper arm.

FIG. 12 is a plan view showing a state where a large-diameter CD is inserted between a pair of centering arms of the disk centering mechanism shown in FIG. 9;

FIG. 13 is a plan view showing a disk centering mechanism and the like of a recording medium reproducing apparatus according to a second embodiment of the present invention.

14 is a plan view showing a state where a small-diameter CD is inserted between a pair of centering arms of the disk centering mechanism shown in FIG.

15 is a plan view showing a state in which a large-diameter CD is inserted between a pair of centering arms of the disk centering mechanism shown in FIG.

16 is a plan view showing a state in which a large-diameter CD is accommodated in the recording medium reproducing device shown in FIG.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 recording medium reproducing device 2a large-diameter CD (large-diameter disk-type recording medium) 2b small-diameter CD (small-diameter disk-type recording medium) 3 equipment body 4 transport unit (transport unit) 62 centering arm (guide unit) 63 link (restriction unit) 64 Stopper arm (blocking means) 67 Arm body 67a One end 67b Other end 68 Projection pin 69 Engagement projection 72 Second arm body 73 Hook 75 Projection 76 Extension 80 One end 81 Other end L One end Line connecting the other end Ma Normal line of large diameter CD (normal line of large diameter disk type recording medium) Mb Normal line of small diameter CD (normal line of small diameter disk type recording medium)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Jun Togashi 25-1, Nishimachi, Yamada-ji, Kawagoe-shi, Saitama Pioneer Co., Ltd. Pioneer Corporation (72) Inventor Noritaka Sawada 25-1, Nishimachi, Yamada, Kawagoe-shi, Saitama Pio Inside the Kawagoe Plant of Near Corporation (72) Inventor Hideki Kinoshita 25-1, Nishimachi, Yamada-shi, Kawagoe-shi, Saitama Prefecture Pioneer Corporation Kawagoe Plant F-term (reference) 5D046 AA12 AA19 CA02 CA16 CB09 CC02 EA02 EA06 EA12

Claims (6)

[Claims] 1. A recording medium for reading information recorded on a disk-shaped recording medium having a large-diameter disk-shaped recording medium and a small-diameter disk-shaped recording medium having different outer diameters at a reproduction position in an apparatus body. In the reproducing apparatus, a transport unit that transports the large-diameter disk-type recording medium and the small-diameter disk-type recording medium along a transport path from a recording medium insertion port provided in the apparatus main body to the reproduction position; Guide means provided movably on the main body to guide the disk-shaped recording medium to the reproduction position along the transport path; and a displaceably provided small-diameter disk-shaped recording medium provided on the apparatus main body from the transport path. Blocking means for preventing the large-diameter disk-shaped recording medium from being displaced when the large-diameter disk-shaped recording medium is conveyed; And regulating means for regulating the displacement of said blocking means to position in the transport path in the form recording medium is conveyed,
A recording medium reproducing apparatus comprising: 2. The guide means has a pair of centering arms, and the blocking means is detachable from and engages with one of the pair of centering arms. A stopper arm for preventing the small-diameter disk-shaped recording medium from coming off the transport path, wherein the restricting means includes the one centering arm and the stopper arm when the large-diameter disk-shaped recording medium is transported. Is released so that the stopper arm can be displaced out of the transport path, and when the small-diameter disk-shaped recording medium is transported, the engagement between the one centering arm and the stopper arm is maintained. 2. The recording medium reproduction according to claim 1, wherein the displacement of the stopper arm is regulated by a lever. Location. 3. A pair of centering arms, an arm body rotatably supported by the device main body such that both end portions thereof can freely contact and separate from each other; and an arm body provided at one end of the arm main body; A projection pin capable of contacting both the large-diameter disk-type recording medium and the small-diameter disk-type recording medium to be inserted, wherein the one centering arm has an engaging projection provided at the other end of the arm body. The stopper arm comprises: a second arm main body rotatably supported by the device main body; and a hook provided on the second arm main body. The hook is provided from the recording medium insertion port. 3. The recording medium reproducing apparatus according to claim 2, wherein the engaging member engages with the engaging protrusion along a direction in which the disk-type recording medium is carried toward the reproducing position. 4. The restricting means includes a link for interlocking the pair of centering arms, wherein the link has a projecting pin of one of the pair of centering arms and a projecting pin of the other centering arm. When pushed in the direction away from the pin, while maintaining the engagement between the engagement protrusion and the hook, restricting the displacement of the stopper arm, the direction in which both projecting pins of the pair of centering arms are separated from each other. 4. The recording medium reproducing apparatus according to claim 3, wherein, when pressed, the engagement projection is disengaged from the hook to allow the displacement of the stopper arm. 5. A recording medium for reading information recorded on a large-diameter disk-type recording medium and a small-diameter disk-type recording medium having different outer diameters from each other at a reproduction position in an apparatus main body. In the reproducing apparatus, a transport unit that transports the large-diameter disk-type recording medium and the small-diameter disk-type recording medium along a transport path from a recording medium insertion port provided in the apparatus main body to the reproduction position; Guide means for displaceably provided on the main body, for guiding the disk-shaped recording medium to the reproduction position along the transport path, and displaceably provided on the apparatus main body so as to be located inside and outside the transport path; Blocking means for preventing the small-diameter disk-shaped recording medium from coming off the transport path when located in the transport path; When the large-sized recording medium is conveyed, the large-diameter disc-shaped recording medium comes into contact with the recording medium, and the small-diameter disc-shaped recording medium comes into contact with the small-diameter disc-shaped recording medium. Wherein the displacement is regulated so as to be located in the transport path. 6. The large-diameter disk-type recording device, wherein the blocking means includes a stopper arm rotatably supported around the other end and one end of which is urged in a direction to be positioned inside or outside the transport path. At a contact point where the large-diameter disk-shaped recording medium comes into contact with the one end when the medium is inserted into the main body of the apparatus, a line segment connecting the one end and the other end is the large-diameter disk-shaped recording medium. The small-diameter disk-shaped recording medium is located near the recording medium insertion opening along the transport direction from the normal line of the medium, and the small-diameter disk-shaped recording medium comes into contact with the one end when the small-diameter disk-shaped recording medium is inserted into the apparatus main body. Wherein a line segment connecting the one end and the other end is located on the back side of the device main body along the transport direction with respect to a normal line of the small-diameter disk-shaped recording medium at the contact point. Item 5 Media playback device.