JP2967059B2 - Cartridge loading mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an initial position at which a cartridge containing a CD (Compact Disc, simply referred to as a "disc") is provided in a drive device, and to which a cartridge can be inserted and ejected, and a reproduction capable of reproducing the disc. The present invention relates to a cartridge loading mechanism for moving the cartridge between the positions.

[0002]

2. Description of the Related Art Conventionally, as a method of mounting a disk in a drive device, there is a method of storing a disk in a case (so-called cartridge) and inserting the cartridge from a mounting opening of the drive device, and a method of protruding into the drive device. There is a method in which a simple tray is provided, and a disk is mounted on the tray and mounted on a drive device. In the former case, a loading mechanism 100 as shown in FIG. 10 is provided in the drive device 102.

The loading mechanism 100 includes a cartridge holder (hereinafter, referred to as a cartridge holder) for storing and holding a cartridge 106.
An upper position D in which the cartridge 106 can be inserted in the drive device 102 and an upper position D
And a function of moving the cartridge 106 on the holder 104 between the initial position A and the storage position C stored in the holder 104. And the cartridge 106 in the initial position A
And a playback position (a position immediately below the storage position C) B.

[0004] Of the above functions, the function of moving the cartridge between the initial position and the reproduction position will be described with reference to FIG. The holder 104 has both side walls along the front-rear direction bent upward in a U-shaped cross section, and both side surfaces of the cartridge 106 inserted from the insertion opening of the holder 104 are held on both side walls of the holder 104. Will be accommodated. Further, the cartridge 106 is attached to the holder 104.
Is made of a synthetic resin so as to be easily slid in both side walls. The rotating arm 122 is constantly urged forward by a torsion coil spring 122a, and the leading end thereof abuts against a shutter 120 provided on the cartridge 106, and moves along with the insertion / extraction operation of the cartridge 106 to the insertion-side end face of the cartridge 106. To move the shutter 120 open and close. The lock lever 12 is a member that engages with the locking recess 110 of the cartridge 106 to move the cartridge 106, and is rotatably mounted on the holder 104 in a plane parallel to the cartridge 106. The slide body 14 moves in the front-rear direction integrally with the lock lever 12, and the coil spring 1 as urging means for urging the lock lever 12 in the engaging direction.
14 is arranged between the slide body 14 and the lock lever 12. Further, the tip of the lock lever is provided with a locking recess 1.
The front inclined surface 112 is formed in the shape of a letter that cannot be engaged with the cartridge 10, and comes into contact with the leading end of the cartridge 106 to be inserted.
a, and a rear inclined surface 112b that comes into contact with the inner surface of the locking recess 110 when the cartridge 106 is extracted after engaging with the locking recess 110.

A mechanism for pulling the cartridge 106 onto the holder 104 includes an electric motor 50, a gear mechanism 52 including a plurality of spur gears, and an electric motor 5 through the gear mechanism 52.
0, a cam gear 116 having a cam 118 formed on the surface thereof, a rear end portion pivotally mounted on a rear end portion of the holder 104, a front end portion being rotatable, and a slide body attached to the front end portion. Engagement pin 14 projecting from the rear end
and a retracting arm 58 having a fourth guide hole 58a into which the b is inserted. The electric motor 50 rotates the retracting arm 58 to move the slide body 14 connected to the retracting arm 58 back and forth. The retraction arm 58 has a torsion coil spring 58b
Is attached, and the slide body 14 is constantly pressed forward. A push pin 58c that contacts the cam 118 is provided on the lower surface of the middle part of the retraction arm 58.
Is protruding. When the pushing pin 58c is pushed by the cam 118 against the urging force of the torsion coil spring 58b, the retraction arm 58 is rotated, and the slide body 14 is rotated.
Is moved back and forth in a constant movement pattern.

The above-mentioned movement pattern will be described with reference to the explanatory view of the cam 118 shown in FIG. The cam gear 116 rotates in the direction of the arrow. The push pin 58c moves on the cam 118,
It makes a circuit from the position a along the path shown by the dashed line, and returns to the position a again. At the position a, the holder is at the upper position C. First, a sensor (not shown) provided on the holder 104 detects the insertion of the cartridge 106, the electric motor 50 operates, the cam gear 116 rotates, and the pushing of the pushing pin 58c starts. While the push pin 58c moves from the position a to the position b on the cam 118, the push pin 58c is pushed rearward of the holder 104, and therefore, the retraction arm 58 also pivots rearward of the holder 104.
Thereby, the lock lever 12 together with the slide body 14
The chucked cartridge 106 is pulled into the storage position C. Subsequently, the pushing pin 58c is moved from the position b to the cam 54.
The cartridge 118 moves upward to the position c. During this time, the cam 118 moves on a concentric circle centered on the rotation axis of the cam gear 56, so that the position of the cartridge 106 remains at the storage position C.

Next, the case where the cartridge 106 is ejected from the drive device 102 will be described. For example, when an eject switch (not shown) is pressed, the electric motor 50 operates to rotate the cam gear 56 again in the direction of the arrow. Then, the pressing pin 58c moves from the position c to the position d on the cam 118.
The cam 118 also moves to the cam gear 11 at this time.
Since the cartridge 106 is on a concentric circle (same circle from position b to position c) about the rotation axis of No. 6, the position of the cartridge 106 remains at the storage position C. When the cam gear 116 is further rotated, the front end of the pull-in arm 58 is constantly biased forward of the holder 104 by a spring.
, The push pin 58c whose push has been once released is rapidly rotated forward. Thus, the cartridge 106 is quickly moved forward by the urging force of the retraction arm 58 and the urging force of the shutter arm 122. The push pin 58c that has rapidly rotated forward comes into contact with the cam 54 at the position e and stops suddenly. Subsequently, the cam gear 56 that rotates further
As a result, the push pin 58c moves from the position e to the position a,
When the push pin 58c reaches the position a, the electric motor 50
Stops.

[0008]

However, the above-mentioned conventional cartridge loading mechanism has the following problems. If the cartridge 106 is repeatedly inserted and extracted, the side wall of the cartridge rubs against the U-shaped inner wall surface of the holder, and the side wall of the synthetic resin cartridge is cut off. When the side wall of the cartridge is shaved, shavings of the synthetic resin adhere to the cartridge and the holder, so that the coefficient of friction between the side wall of the cartridge and the inner wall surface of the side surface of the holder increases, and the pull-in arm and the rotation There has been a problem that the cartridge cannot be pushed out of the storage position to the initial position only by the urging force of the arm.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problem, and an object of the present invention is to provide a loading mechanism which can push out a cartridge well even if friction between the cartridge and a holder increases. It is in.

[0010]

The present invention has the following arrangement to achieve the above object. That is, the cartridge stored and held slidably in the front-rear direction in the cartridge holder is moved between an initial position where the cartridge can be inserted / removed and a reproduction position where the disc stored in the cartridge can be reproduced. In a loading mechanism for a cartridge to be mounted, a lock lever provided on the cartridge holder, removably connected to the cartridge, and movable in a sliding direction of the cartridge, and engaged with the lock lever on one end side, An arm that rotates on a plane in the cartridge holder around an axis provided on an end side, a cam that engages with the arm, and a motor that rotates the cam, wherein the cam controls the arm. Pivot, the arm is moved forward and backward by the lock lever,
It is characterized in that both operations of pulling the cartridge from the initial position to the reproduction position with respect to the cartridge holder and pushing out the cartridge from the reproduction position to the initial position are performed. According to this configuration, even when the cartridge cannot be pushed out only by the urging force, the cartridge can be favorably pushed out by the force of the motor.

A push pin protrudes in the middle of the arm, and the cam pushes the push pin protruding from the arm to move the cartridge from an initial position to a reproducing position. And a pushing portion for pushing the pushing pin to move the cartridge from the reproduction position to the initial position.
By employing this configuration, the power of the motor can be efficiently converted to the operation of the cartridge in the sliding direction.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a cartridge loading mechanism according to the present invention will be described below in detail with reference to the accompanying drawings. The same components as those described in the conventional example are denoted by the same reference numerals, and description thereof will be omitted.

First, the basic operation of the loading mechanism 10 will be described with reference to FIGS. The loading mechanism 10 mounts the holder 104 for housing and holding the cartridge 106 in the drive device 20.
6, a function of vertically moving between an upper position D in which the cartridge 6 can be inserted, and a lower position E located immediately below the upper position D;
The cartridge 106 is moved between an initial position A and a reproduction position (a position immediately below the storage position C) B. The cartridge 106 is made of a synthetic resin so as to be easily slid in the holder 104. When the cartridge 106 is moved on the holder 104,
Since the lock lever 12 is rotatably attached to the slide body 14 movable in the front-back direction on the holder 104, the slide body 14 may be moved back and forth while the lock lever 12 is engaged with the cartridge 106. . The loading mechanism 10 according to the present invention is characterized in that the cartridge 106 can be pushed out from the storage position C to the initial position A by using the power of an electric motor described later. This makes it possible to easily discharge the cartridge 106 even when the friction between the cartridge 106 and the holder 104 is large and sliding is not easy.

Next, the holder 10 of the loading mechanism 10
An embodiment of the moving mechanism 4 will be described with reference to FIGS. The front panel of the housing 16 of the drive device 20 has a mounting port 18 into which the cartridge 106 is inserted.
Is provided. A base chassis 20 is fixed to an inner bottom surface of the housing 16. Base chassis 2
A plate-shaped mechanical chassis 24 is mounted on the top of the housing 0 via a damper 22 composed of a rubber cushion 22a and a coil spring 22b. Both side surfaces of the mechanical chassis 24 orthogonal to the mounting opening 18 are formed by being bent downward, and two support pins 26 are protruded from the same height in the horizontal direction. Also, the mechanical chassis 24
At the top, four first guide holes 28 into which up-down guides projecting from the bottom surface of the holder 104 described later are inserted are provided.

The plate-shaped slide plate 30 is set so that the width between both side surfaces orthogonal to the mounting opening 18 formed by bending downward is slightly wider than the width of the mechanical chassis 24. 24, and is slidable on the mechanical chassis 24 in a direction perpendicular to the mounting port 18 along the side surface. In addition, the lower end edge shapes of both side surfaces are divided into two first horizontal lines H, and each of the first horizontal lines H is positioned above the first horizontal line H and divided into two. The second located behind the horizontal line H
It is composed of a horizontal line I and two oblique lines J connecting each first horizontal line H and each second horizontal line I. The distance between the two oblique lines J is equal to the distance between the support pins 26. Further, since the slide plate 30 is placed on the mechanical chassis 24 in a state where the lower edges of both side surfaces are in contact with the support pins 26 of the mechanical chassis 24, when the slide plate 30 slides on the mechanical chassis 24, the mechanical The first horizontal line H and the second horizontal line I move up and down by a distance in the vertical direction with respect to the chassis 24. When the slide plate 30 is moved to the uppermost position, the holder 104, which will be described later,
The upper position D becomes the same height as the position 8 and the lower position E when it moves to the lowest position, so that the cartridge mounted at the storage position C of the holder 104 reaches the reproduction position B.

The slide plate 30 has a first guide hole 28 formed in the mechanical chassis 24,
An escape hole (or escape notch) 32 for escaping an up-down guide to be described later is provided. Further, four second guide holes 34 extending in the front-rear direction are provided in order to restrict and move a holder described later only in the front-rear direction relative to the slide plate 30. Note that each of the second guide holes 34 is formed such that only the opening width of the rear end portion is large. Note that the slide plate 30 is attached to the holder 104.
Relative to the holder 104 and the mechanical chassis 24 by a driving mechanism including an electric motor 50, a gear mechanism 52, and a pressing arm 53 driven by the electric motor 50 via the gear mechanism 52. Is moved back and forth.

The holder 104 is formed by bending both sides along the front-rear direction upward in a U-shaped cross section.
The cartridge 106 inserted from the fourth insertion port 36 can be held and stored. On the bottom surface of the holder 104, four cylindrical up-down guides 38 are vertically protruded downward from the bottom of the mechanical chassis 24 at positions corresponding to the first guide holes 28. At the position corresponding to the guide hole 34, four cylindrical slide guides 39 each having a lower end formed with a large diameter are protruded. The large-diameter portion of the slide guide 39 is formed to have a slightly smaller diameter than the large-diameter portion of the second guide hole 34 and a diameter larger than the other portion (the long groove portion) of the second guide hole 34, and the outer shape of the other portion is the second portion. The diameter of the guide hole 34 is slightly smaller than the opening width of the long groove portion.

Next, the holder 104, the slide plate 3
0, the mechanical chassis 24, and the connection structure of the base chassis 20 will be described. First, the holder 104 inserts the up-down guide 38 into an escape hole (or escape notch).
32, the large-diameter portion of the slide guide 39 is aligned with the large-diameter portion of the second guide hole 34 and fitted.
In this state, the slide guide 39 is shifted so as to be located in the long groove portion of the second guide hole 34, and the slide guide 39 is shifted.
Attach to As a result, the large-diameter portion of the slide guide 39 is engaged with the edge of the second guide hole 34 on the bottom surface side of the slide plate 30, and the holder 104 normally
It becomes impossible to escape from 0.

Subsequently, the holder 104 connected to the slide plate 30 is inserted into the first guide hole 28 provided in the mechanical chassis 24 with the up-down guide 38 inserted therebetween, and the mechanical chassis 24 is sandwiched with the slide plate 30 therebetween. Place on top. Then, the coil spring 40 is externally fitted to the up-down guide 38 projecting downward from the first guide hole 28, and is prevented from falling off by the E-ring 42. The coil spring 40 is elastically mounted between the E-ring 42 and the lower surface of the mechanical chassis 24, and the holder 104 and the slide plate 30 are always brought closer to the mechanical chassis 24 via the up-down guides 38 with respect to the mechanical chassis 24 (see FIG. Downward).

Next, one embodiment of the moving mechanism of the cartridge 106 of the loading mechanism 10 is shown in FIGS.
This will be described with reference to FIG. The mechanism for moving the cartridge 106 has a function of pulling the cartridge 106 inserted into the holder 104 and engaged with the lock lever 12 at the initial position A to the storage position C inside the holder 104, and conversely, from the storage position C to the initial position A. It has an extruding function.

The pivot arm 122 has a holder 104 at its rear end.
The roller 122b provided at the front end is engaged with the shutter 120 provided on the cartridge 106, and moves along the insertion-side end face of the cartridge 106 in accordance with the drawing-in / pushing-out operation of the cartridge 106. It has a function of opening and closing the shutter 120. A torsion coil spring 122a is attached to the shaft attachment portion, and constantly presses the cartridge 106 forward. The lock lever 12 is rotatable on the same plane as the cartridge 106 with an intermediate portion K pivotally or pivotally mounted on the slide body 14. Further, it is movable in the front-rear direction along one side surface 104a of the holder 104 together with the slide body 14. The front end side of the lock lever 12 is formed in a hook shape so as to engage with the locking recess 110 of the cartridge 106, and the front end thereof is
6 are formed so as to be able to enter the locking recesses 110.

The slide body 14 is formed in a plate shape using a synthetic resin material in consideration of workability and ease of sliding on the holder 104, and is provided with a third linear guide hole 14a. A first guide pin 44 protruding from the holder 104 is inserted into the third guide hole 14a of the slide body 14,
The first guide pin 44 and one side surface 104 of the holder 104
It is slidable only in the front-rear direction while being sandwiched by the inner surface of a. The slide body 14 is provided with an engagement pin 14b, which is inserted into a fourth guide hole 58a formed in an arm 58 described later. A coil spring 114 as urging means for urging the lock lever 12 in the direction of engagement with the engagement recess 110 of the cartridge 106 is disposed between the slide body 14 and the lock lever 12, and the slide body 14 When moving, it moves together with the lock lever 12. As shown in FIG. 7, a long hole 46 extending in the front-rear direction is provided at a rising portion of one side surface 104 a of the holder 104, and a hook-like front end portion of the lock lever 12 is formed by the long hole 46. It moves back and forth while entering.

Next, the cartridge 106 is inserted into the holder 104.
The mechanism for retracting from the initial position A to the storage position C will be described above. This mechanism includes an electric motor 50, a gear mechanism 52 including a plurality of spur gears, a cam gear 56 having a cam 54 formed on the surface thereof, which is rotationally driven by the electric motor 50 via the gear mechanism 52, and a rear end portion. Is pivotally mounted on the rear end portion of the holder 104, the front end portion is rotatable, and an engagement pin 14b protruding from the rear end portion of the slide body 14 is inserted into the front end portion. The arm 58 is formed with an arm 58a, and the arm 58 is rotated by the electric motor 50 to move the slide body 14 connected to the arm 58 back and forth. The electric motor 50 and the gear mechanism 52 also serve as a drive source for moving the slide plate 30 back and forth as described above, and the up and down drive of the holder 104 and the back and forth movement of the slide body 14 are interlocked according to a predetermined pattern. Will be The arm 58 has a torsion coil spring 58b attached to a shaft attachment portion,
The slide body 14 is always pressed forward. On the lower surface of the halfway portion of the arm 58, a pushing pin 58c which comes into contact with the cam 54 is provided in a protruding manner. When the pushing pin 58c is pushed by the cam 54 against the urging force of the torsion coil spring 58b, the retraction arm 58 is rotated, and the slide body 14 is moved back and forth in a constant movement pattern.

Next, the cam 54 provided on the cam gear 56 will be described with reference to FIG. The cam 54 is formed by forming irregularities on the surface of a cam gear 56, and the wall surfaces of the irregularities are formed on a cam surface.
c is pushed and the arm 58 is rotated. An outer peripheral wall 67 is provided on the outer peripheral edge of the cam gear 56 so as to surround the unevenness. In order to push the pushing pin 58c rearward (in the direction in which the cartridge 106 is pulled in), a drawing portion 60 of the cam surface is provided so as to protrude above the surface of the cam gear 56. The retracting portion 60 is formed in an arc shape protruding from the center of the rotation shaft of the cam gear 56 toward the circumferential direction in the rotation direction shown by the arrow in FIG.
Is rotated so that the pushing pin 58c is moved to the cam gear 56.
Is moved along the arc from the center of the rotation axis in the circumferential direction. In order to push the pushing pin 58c forward (in the direction in which the cartridge 106 is ejected), an pushing portion 64 is provided so as to project from the surface of the cam gear 56. The pushing portion 64 is formed in an arc shape that is recessed from the outer peripheral wall 67 toward the center of the rotation shaft in the direction of the arrow shown in FIG.
Is rotated, the pushing pin 58c is moved to the outer peripheral wall 6 of the pushing pin 58c.
Move along the arc from 7 to the center of the rotation axis. Further, the push pin 5 between the retracting portion 60 and the pushing portion 64
A neutral portion 65 protrudes along the movement route 8c.
The neutral portion 65 is formed so as to be concentric with the outer peripheral wall 67.

Next, the movement of the push pin 58c that moves on the cam 54 together with the operation of the loading mechanism 10 will be described. First, the movement of the push pin 58c on the cam 54 will be described. The push pin 58c goes around the cam 54 from the position a along the path shown by the dashed line, and returns to the position a again. In the position a, the slide plate 3
0, the first horizontal line H contacts the support pin 26 of the mechanical chassis 30 as shown in FIG.
Supported above, so that the holder 104 is in the upper position D. First, when the cartridge 106 is inserted into the holder 104, the tip of the lock lever 12 enters and engages with the engagement recess 110 of the cartridge 106, and the cartridge 106 is moved forward and backward by the lock lever 12.
Thereafter, for example, a sensor (not shown) provided in the holder 104 detects the insertion of the cartridge 106, the electric motor 50 is operated, and the cam gear 56 rotates to push the push pin 58c.
Start pushing. By the rotation of the cam gear 56, the push pin 58c moves from the position a to the position b along the arc of the retracting portion 60. As a result, the arm 58 also rotates rearward of the holder 104. When the push pin 58c reaches the position b, the lock lever 12 moves backward together with the slide body 14, and the cartridge 106 is retracted from the initial position A to the storage position C. At the same time, the shutter of the cartridge 106 is also moved by the rotating arm 122 so that the disc (not shown) accommodated in the cartridge 106 is exposed.

Subsequently, the pushing pin 58c moves from the position b to the position c by the rotation of the cam gear 56. At this time, the push pin 58c is not pushed by the cam 54 but
2, the holder 104 moves from the lower position E to the upper position D
The cartridge 106 is fixed so as not to move forward, and therefore does not move forward due to the urging force of the torsion coil spring 58b. On the other hand, the slide plate 30 starts driving forward as shown in FIG.
The contact portion with the support pin 26 is the first horizontal line H → the diagonal line J →
It changes like the second horizontal line I, moves forward, moves downward, and stops at the position shown in FIG. As a result, the holder 104 moves to the lower position E, the cartridge 106 stored in the holder 104 moves to the reproduction position B, and the movement of the cartridge 106 from the initial position A to the reproduction position B ends. The electric motor 50 stops operating when the movement of the holder 104 to the lower position E is completed.

Next, a case where the cartridge 106 is ejected from the drive device 100 will be described. For example, when an eject switch (not shown) provided on the front panel 16a of the drive device 100 is pressed, the electric motor 5
0 operates to rotate the cam gear 56 again in the direction of the arrow.
When the cam gear 56 rotates, the pushing pin 58c is pushed by the neutral portion 65 which pushes so as to be on a concentric circle centered on the rotation axis of the cam gear 56, and is kept behind the holder 104. is there. While the push pin 58c moves from the position c to the position d, the slide plate 30 moves upward while being driven backward. Therefore, the holder 104 moves from the lower position E to the upper position D together with the slide plate 30.

When the cam gear 56 further rotates, the push pin 58c reaches the second cutout portion 66 located between the push-out portion 64 and the neutral portion 65. At this time, the cartridge 10
If the friction between the coil spring 6 and the holder 104 is not large, the torsion coil spring 58 is used as described in the related art.
The pushing force pin 58c is released from the position c as shown by the dotted line in FIG.
Quickly turns forward and abuts the position g. Subsequently, the pushing pin 58c is moved from the position g to the position a by the rotating cam gear 56, and the electric motor 50 stops when the pushing pin 58c reaches the position a. However, when the friction between the cartridge 106 and the holder 104 increases, the cartridge 106 cannot be pushed out by the urging force of the torsion coil spring 58b and the urging force of the torsion coil spring 122a of the rotating arm 122. The push pin 58c does not move forward even when reaching the two notches 66. Thus, without moving forward, the second
The pushing pin 58c that has passed through the notch 66 abuts on the pushing portion 64 at the position e. The pushing pin 58c abutting on the pushing portion 64 is pushed by the pushing portion 64 and moves to the position e.
Move along the arc of the pushing portion 64 to the position f, the arm 58 also rotates forward of the holder 104, and
The lock lever 12 is pushed forward together with the slide body 14 interlocked with 8 so that the cartridge 106 is ejected.
Subsequently, the pushing pin 58c is moved from the position f to the position a by the rotating cam gear 56, and the electric motor 50 stops when the pushing pin 58c reaches the position a.

The cam 54 may be a groove having a width slightly larger than the diameter of the push pin 58c formed on the surface of the cam gear 56, and the push pin 58c is fitted into the groove so that the push pin 58c (Not shown). Further, in this case, the urging force of the torsion coil spring 58b attached to the shaft attachment portion of the arm 58 is not required, so that
The torsion coil spring 58b may not be provided. further,
The shape of the cam is not limited to the shape described above, but may be any as long as the push pin provided on the arm can be moved back and forth when the cartridge is pulled in and out.

Although various preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and many modifications can be made without departing from the spirit of the invention. Of course.

[0031]

When the loading mechanism according to the present invention is used, the friction is large at the contact surface between the cartridge and the holder, and the cartridge can be rotated by the motor even when the cartridge cannot be pushed out only by the urging force of a spring or the like. The cam allows the cartridge to be pushed out.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a basic operation of a loading mechanism according to the present invention.

FIG. 2 is an explanatory diagram for explaining an operation of pulling in and pushing out a cartridge in a holder in FIG. 1;

FIG. 3 is an assembled perspective view showing a configuration of the loading mechanism of FIG. 1;

FIG. 4 is a side view showing a state in which a holder is at an upper position and a cartridge can be pulled in and out;

FIG. 5 is a side view showing a state where the slide plate has started moving forward.

FIG. 6 is a side view showing a state in which the forward movement of the slide plate has been completed, the holder has reached the lower position, and the cartridge has moved to the reproduction position.

FIG. 7 is a side view of the holder.

FIG. 8 is a top view showing the configuration of the loading mechanism of FIG. 1;

FIG. 9 is a plan view showing a moving state of a pushing pin on a cam gear.

FIG. 10 is an explanatory diagram showing a basic operation of a conventional loading mechanism.

FIG. 11 is a top view showing the configuration of the loading mechanism of FIG. 10;

FIG. 12 is a plan view showing a state of movement of a push pin on a conventional cam gear.

DESCRIPTION OF SYMBOLS 10 Loading mechanism 12 Lock lever 14 Slide body 14a Third guide hole 16 Housing 18 Insertion opening 20 Base chassis 21 Drive device 22a Cushion 22b Coil pulling 24 Mechanical chassis 26 Support pin 28 First guide hole 30 Slide plate 32 escape hole 34 second guide hole 36 insertion opening 38 up / down guide 39 slide guide 40 coil spring 42 E-ring 44 first guide pin 46 long hole 50 electric motor 52 gear mechanism 53 pressing arm 54 cam 56 cam gear 58 arm 58a first 4 guide hole 58b torsion coil spring 58c pushing pin 60 drawing part 62 notch part 64 pushing part 65 neutral part 66 second notch part 67 outer peripheral wall 104 cartridge holder 106 cartridge 110 Locking recess 114 Spring (biasing means) 120 Shutter 122 Rotating arm 122a Torsion coil spring 122b Roller A Initial position B Reproduction position C Storage position D Top position E Bottom position K Midway H First horizontal line I Second horizontal line J Oblique line

Claims (2)

(57) [Claims] 1. A cartridge stored and held in a cartridge holder so as to be slidable in the front-rear direction between an initial position in which the cartridge can be inserted and withdrawn and a reproduction position in which a disc stored in the cartridge can be reproduced. A locking lever provided on the cartridge holder, removably connected to the cartridge, and movable in a sliding direction of the cartridge; and a lock lever engaged at one end with the locking lever. An arm that rotates on a plane in the cartridge holder around an axis provided at the other end, a cam that engages with the arm, and a motor that rotates the cam; The arm is rotated, and the lock lever is moved forward and backward by the arm to move the cartridge into the cartridge holder. A pull from the initial position to the reproduction position with respect to da, cartridge loading mechanism which is characterized in that both the operation of the extrusion into the initial position from the reproduction position. 2. A push pin protrudes from a middle portion of the arm, and the cam moves the cartridge from an initial position to a reproduction position by pushing a push pin protruding from the arm. 2. A cartridge loading mechanism according to claim 1, further comprising a pull-in portion for pushing the push pin and moving the cartridge from a reproduction position to an initial position by pushing the push pin.