KR100244528B1 - Disk reproduction apparatus - Google Patents

Abstract

Disclosure of Invention The present invention is to provide a disc reproducing apparatus which can handle both large diameter discs and small diameter discs with good operability even when mounted in an automobile or the like. The slide supporting the inserted disc (CD) is provided. A member S, a guide member G for guiding the slide member S along the disc insertion direction, and a drive device 10 for reciprocating the slide member S along the guide member G. Equipped. The slide member S has a disc diameter detecting means M for detecting the diameter of the inserted disc CD and a slide member whose position is changed by the disc diameter detected by the disc diameter detecting means M. Means U are provided. The guide member (G) relates to a disk reproducing apparatus, characterized in that a large-diameter disk presser 27 and a small-diameter disk presser 28 are provided.

Description

Disc player

1 is a perspective view showing a schematic configuration of a disc reproducing apparatus according to an embodiment of the present invention.

2 is a side view showing the internal structure in the ejected state of the apparatus.

3 is a side view showing the internal structure of a regeneration state of the apparatus.

4 is a plan view showing the structure of a guide member in the copper apparatus.

5 is a cross-sectional view showing the structure of the clamper of the copper device.

6 is a plan view showing the structure of the slide member of the apparatus.

7 is a perspective view showing the relationship between the first lever M and the second lever U of the same apparatus.

8 is a plan view showing the configuration of the first lever M of the apparatus.

9 is a diagram showing a disc not inserted state in the alumni value.

10 is an insertion state display diagram of a small diameter disk.

11 is a view showing the loading completion state of the small diameter disk.

Fig. 12 is a diagram showing the insertion start state of a large diameter disc.

Fig. 13 is a diagram showing the state during insertion of a large diameter disk;

14 is a view showing the insertion completion state of a large diameter disk.

Fig. 15 is a diagram showing the loading completion state of a large diameter disc.

* Explanation of symbols for the main parts of the drawings

CD: Disc G: Guide member

M: First lever (disc diameter detecting means) S: Slide member

U: second lever (slide member pressing means) 10: drive member (drive mechanism)

27: Pressing part for large diameter disk 28: Pressing part for small diameter disk

The present invention is excellent in handling ability to effectively load a plurality of types of disc recording media having different disc diameters, for example, compact discs (CD) having a diameter of 12 cm and an diameter of 8 cm to the disc reproducing unit inside the apparatus main body. A disc player.

In recent years, the spread of the disc reproducing apparatus which optically reproduces the information recorded as a pit row on a disc shaped recording medium (disc) is active. This type of disc includes a so-called laser disc LD of 30 cm in diameter, a compact disc of 12 cm in diameter or 8 cm in diameter, and the like as a disc reproducing apparatus, which supports a plurality of discs having different diameters. Various studies are being done to do this.

Incidentally, in the top-loading system (cover type) in which the top cover of the apparatus main body is opened and the disc is directly mounted on the turntable provided therein, the difference in the disc diameter is hardly a problem. On the other hand, in a tray type apparatus in which a tray is provided so as to be movable between a disc reproducing apparatus in the apparatus main body and a disc insertion / extraction position protruding out of the apparatus main body, and the disc is placed on this tray and conveyed, for example. As disclosed in Japanese Patent Laid-Open No. 5-128688, a plurality of circular recesses formed in accordance with a disc diameter are coaxially formed in a multi-stage on the tray surface, so that a plurality of discs having different diameters can be coped with.

In addition, there is also a roller-type apparatus for conveying a disk inserted in the disk insertion / exit opening opened in the front of the apparatus main body to a disk reproducing position using a roller assembled therein. In this roller system, the opening angles of a pair of levers abutting the edges of the disc inserted at the disc insertion exit, for example, as disclosed in Japanese Patent Laid-Open No. 4-195855 or Japanese Patent Laid-Open No. 5-298802, respectively. The position of the disk relative to the turntable is controlled by controlling the diameter of the disk, and the disk diameter is coped with.

By the way, the above-described tray-type apparatus is relatively simple in configuration, but when applied to an on-vehicle disk reproducing apparatus, since the installation position is often a narrow space near the driver's seat, protruding from the tray apparatus main body is problematic. Easy to be In contrast, the roller-type disc reproducing apparatus only allows the disc to come in and out from the disc insertion / exit port provided on the front side thereof, and is suitable as a vehicle-mounted device without the problem of the tray method described above.

However, the roller type apparatus generally cannot be denied to have a large and complicated configuration. Furthermore, in the roller type apparatus, it is usually configured to detect when the tip of the disc inserted at the disc insertion / exit outlet reaches a predetermined position and to start the loading operation. For this reason, the loading operation can be started when the disc is 12 cm in diameter, for example, when inserted up to half of it. In the case of the 8 cm disc, most of the disc is not inserted deeply until it is hidden in the device body. Otherwise, the loading operation cannot be started. Furthermore, there is a problem that if the disc is not deeply inserted to some extent, the disc diameter cannot be determined to control the opening angle of the lever.

Thus, the deep insertion of an 8 cm diameter disk caused the operation and the handling to be very poor.

SUMMARY OF THE INVENTION The present invention has been invented in view of the above circumstances, and an object thereof is to provide a disc reproducing apparatus having a simple configuration with excellent operability and handling ability that can reliably and effectively load a plurality of discs of different diameters without using a tray. It's there.

The disc reproducing apparatus according to the present invention includes a slide member and a slide member which inserts a disc in parallel with the disc surface and moves between an insertion release position for inserting or escaping the disc along the guide member and a reproducing position for disc reproducing. A first lever freely supported by the member and retracted by an amount along the disc diameter by being pressed against the outer edge of the disc inserted into the slide member, and freely supported by the slide member by the freely rotated member and in accordance with the amount of retraction of the first lever A second lever for varying the position of the rotational movement point on the slide member, the second lever being rotated by pushing one end to an outer edge of the disk inserted in the slide member, and a plurality of second levers are formed along the disk diameter of the guide member; The other end of the second lever when rotating by pushing one end to the outer edge Abutting part for moving the slide member from the insertion release position toward the regeneration position by abutting it, and starting when the slide member moves a predetermined amount from the insertion release position toward the regeneration position, and moving the slide member to the regeneration position. It is characterized by including a drive device.

In addition, the first lever and the second lever are arranged in a pair of left and right symmetry, each of the left and right first lever and the second lever is characterized in that the elastic piece in the direction approaching each other to elastically support the disk in the slide member.

In addition, the guide member has a plurality of guide pairs symmetrically in pairs according to the disc diameter, and controls the distance between the pair of first levers in the corresponding guide portion when the slide member moves from the insertion release position toward the play position. An inner disk is supported at a center position in the left and right directions.

In addition, the pair of first levers are contacted with the guide member at the position closest to the movement of the slide member from the insertion and disengagement position to the reproducing position.

In addition, the pair of second levers contact each other end with the pressed part according to the disc diameter when the slide member moves from the play position to the insertion release position, thereby making the disc in the slide member at each end with the corresponding contact position as a point. Rotational movement in the pressing direction is characterized in that.

In addition, the guide member has a plurality of pairs of abutting portions, each paired left and right symmetrically, according to the disc diameter, and when the slide member reaches the play position from the insertion release position, each other end of the pair of second levers fits the corresponding contact portion. Each end is separated from the disk in the slide member by making contact.

According to the disc reproducing apparatus configured as described above, when the disc is inserted into the slide member, the first lever is shifted in displacement corresponding to its diameter, and accordingly, the engagement position with the slide member of the second lever is changed. The rotational movement point of the second lever which is pushed and rotated by the periphery of is changed in correspondence with the disc diameter. Then, the second lever rotates while selectively contacting the blood pressing of the guide member set corresponding to the disc diameter in advance, thereby controlling the rotational movement. By the rotational movement of the second lever regulated by the rotational movement, the slide member is pressed and moved to the disc regeneration position side, and the driving device is started.

Therefore, the movement condition of the slide member can be changed mechanically simply by the rotational movement of the second lever whose rotational movement point and its rotational movement range are changed according to the disc diameter. The required insertion amount of the disk can be set in accordance with the diameter of the disk, and the handleability can be improved.

Further, since the disc inserted in the slide member is positioned at a predetermined position by the first lever and the second lever which are biased inward, the loading position of the disc can be reliably defined regardless of the disc diameter difference. .

First, the overall structure of the disc reproducing apparatus according to the embodiment of the present invention will be briefly described.

1 is a perspective view showing a schematic configuration of an embodiment apparatus, and FIGS. 2 and 3 are side views schematically showing the internal structure thereof. FIG. 2 shows the state at the time of disc loading, and FIG. 3 shows the state at the time of disc playback.

In FIG. 1 and FIG. 2, the metal chassis 1 which comprises the apparatus main body part is bent in the both side part of the upper board downward, and the disk insertion side is largely opened. A pair of front and rear spring mounting portions 2 are formed on both sides of the upper plate of the chassis 1, and pin engagement portions 3 are formed on the inner surfaces of the two side plates, respectively. On the inner surface of the chassis 1, a reproducing unit 4 equipped with a turntable and an optical head (not shown) is provided between the spring mounting portion 5 provided before and after the spring mounting portion 2 of the chassis 1. It is installed through the spring 6 installed in this, and is installed freely to move.

The side of the regeneration unit 4 is provided with a pin 8 that can be engaged with the pin engagement recess 3. Moreover, the drive member 10 which reciprocates along the disc insertion direction by the drive motor which is not shown in figure is provided in the upper surface of the regeneration unit 4. As shown in FIG. Inside the drive member 10, an engaging projection 11 for engaging with the slide member S, which will be described later, is provided, and a cam surface 12 is formed at a portion of the disk insertion side which is continuous to it.

On the other hand, above the regeneration unit 4, the guide member G is provided between the top plate of the chassis 1, and is provided. The guide member (G) and the reproducing unit (4) are freely rotatably connected in the up and down direction through the shaft (13) inside the disc reproducing apparatus, and closer to each other by the spring (14) on the disc insertion side. It is elastically supported in the direction. Moreover, the projection 15 which contacts the cam surface 12 protrudes downward in the center lower surface of this guide member G. As shown in FIG.

In addition, both sides of the guide member G are each " It is formed in the shape of ", and is guided to both sides at the inside, and the slide member S is installed freely. The engagement protrusion 11 of the said drive member 10 is this slide member S. As shown in FIG. It engages with the engagement recessed part 16 provided in the inside, and moves integrally with the slide member S. Moreover, detailed description of the guide member G and the slide member S is mentioned later.

Thus, when the disc CD is inserted into the slide member S described above and pressed, the slide member S slightly moves into the disc reproducing apparatus. This movement is detected by detection means (not shown) such as a photosensor or a leaf switch, and a motor (not shown) is started to move the drive member 10 inward. As a result, the slide member S engaged with the engaging projection 11 of the drive member 10 is transferred to the disc reproducing position inside the disc reproducing apparatus, and the disc housed in the slide member S is regenerated. Is loaded.

In the state shown in FIG. 2 in which the slide member S is in the eject position (disc insertion and disengagement position), the cam face 12 of the drive member 10 is in contact with the projection 15 of the guide member G. The regenerating unit 4 and the guide member G are resistant to the elastic bearing force of the spring 14, and the disc insertion side ends thereof are spaced apart from each other. The guide member G is in contact with the upper plate of the chassis 1, and the pins 8 of the regeneration unit 4 are engaged with the pin engagement portions 3 of the chassis 1.

In this state, when the slide member S is conveyed to the internal disk regeneration position shown in FIG. 3, the mirror surface of the cam surface 12 of the drive member 10 is located at the position of the projection 15 of the guide member G. FIG. Since the regeneration unit 4 and the guide member G approach each other by the elastic bearing force of the spring 14. Then, the guide member G pushed upward by the regeneration unit 4 is separated from the top plate of the chassis 1, and the pins 8 of the regeneration unit 4 are engaged with the pins of the chassis 1 again. Departure from the recess 3. The regeneration unit 4 is elastically supported inside the chassis 1 by the spring 6 in a state of being integral with the guide member G. At this time, due to the proximity of the reproducing unit 4 and the guide member G, the disc housed in the slide member S is mounted on the turntable, clamped, and provided for regeneration by the optical head.

Moreover, as a means for conveying the slide member S to the disc reproducing position, a means for conveying the disc tray described in Japanese Patent Laid-Open No. 5-128688 can be suitably employed.

By the way, the guide member G is comprised as shown in FIG. The guide member G has a structure (shape) which is symmetrical left and right, and accommodates the slide member S therein. Furthermore, the left half of FIG. 4 shows a state in which a large diameter disk is inserted into the slide member S, and the right half shows a state in which a small diameter disk is inserted. Here, only the disc is inserted into the slide member S in the state where the disc is inserted, and it means a state in which no force is applied from the outside.

By the way, the front-end part 21 of the guide member G is comprised by bending so that 1 step | paragraph may be raised as shown in FIG. On the upper surface of the guide member G, six pairs of three elongated openings 22, 23, and 24 are drilled inward from the front end 21 thereof.

A larger opening 26 is formed inside the opening 22 for the outermost large diameter disk. On the disc insertion side of the opening port 26, a large-diameter disk press member 27 is formed, and immediately inside, a small-diameter disk press member 28 is cut out. Moreover, inside the opening port 26, the small diameter disk contact part 30 and the large diameter disk contact part 31 are provided, respectively. These pushed parts 26 and 27 and the contacting parts 30 and 31 are installed in a displaced direction in the width direction of the guide member G in accordance with the diameter of the disc inserted into the slide member S, but with respect to the function thereof. Will be described later.

Further, the second small-diameter disc opening port 23 from the outside is inclined slightly inward toward the inside, and the locking recess 23a is formed at the tip position of the disc insertion side. The innermost projection guide opening 24 was formed in a straight line along the disc insertion direction. Moreover, the opening part 33 for clampers is formed in the center part of guide member G, The clamper push spring 35 is provided in the inside by the screw 36. As shown in FIG. The function of these openings 23 and 24 is also mentioned later.

Next, the slide member S installed freely inside the guide member G will be described. 6 is a plan view showing the slide member S having a symmetrical structure by half. 7 is a perspective view showing a coupling relationship between the first lever M and the second lever U installed in the slide member S, and FIG. 8 is a view for explaining the operation of the first lever M. FIG. to be.

The slide member S has a flat box shape in which the disc insertion side is largely opened, and upper and lower plates are formed with openings for clamping and the like. On the upper plate of this slicing member S, a pair of 1st lever M and 2nd lever U are arranged in left-right symmetry.

The first lever M is provided with the disc support portion 41 lowered at the distal end of the disc insertion side. The first lever M has a large diameter disc opening port 22 and a small diameter disc opening port in the vicinity thereof. A projection 42 which is selectively engaged with and guided on one side of 23 is formed to protrude upward. As shown in FIG. 6, the rotary shaft 43 of the first lever M is freely installed on the shaft mounting portion 44 protruding from the upper plate of the slide member S. As shown in FIG. The portion of the disk insertion side of the rotational shaft 43 of the first lever M is as thick as the first lever M on the upper surface of the upper plate of the slide member S, as shown in FIG. It moves on the area 45 once formed low.

Moreover, as shown in FIG. 7, the spring installation part 47 is formed in the inner part of the rotating shaft 43 of the 1st lever M. As shown in FIG. The tip of the sun spring 51 fixed to the spring fixing parts 49 and 50 of the slide member S is engaged with this spring installation part 47, and the force of this sun spring 51 is a 1st The lever M is elastically supported so that the front end side which formed the disk support part 41 displaces rotational movement toward an inner side.

Moreover, the curved slit 53 is formed in the outer side of the said rotating shaft 43 of the rear end part of the 1st lever M as shown to FIG. 7 and FIG.

This slit 53 is similar to the disk insertion side end part 53a of the circular arc A of the radius A centered on the rotational axis 43, and is centered on the rotational axis 43, and is larger than the said radius A. An inner end portion 53a having a circular arc having a large radius B and an intermediate portion 53b for smoothly connecting them.

On the other hand, the rotary shaft 55 of the second lever U is inserted into the slit 53. The rotary shaft 55 protrudes on both front and rear surfaces of the second lever U, and the rotary shaft 55 on the rear side is the slide member S as shown in FIGS. 6 and 8. The position is regulated by the opening 56 of the and is slidably engaged. When the first lever M is at the position indicated by the solid line in FIG. 8, that is, when the small-diameter disk is inserted, the rotary shaft 55 is guided by the inner end 53c of the slit 53 It is located outside the opening port 56.

When the first lever M rotates from the position of the solid line to the position indicated by the double-dotted line, and the slit 53 engaged with the rotation shaft 55 is moved with this, the middle portion thereof 53b moves to the inner position of the opening port 56 by pressing the rotary shaft 55. Therefore, when the first lever M is in the position of the dashed-dotted line, that is, when the large-diameter disk is inserted, the rotary shaft 55 is moved to the inner position in the opening port 56. In this way, the first lever M displaces the position of the rotary shaft 55 of the second lever U according to the diameter of the disk inserted into the slide member S, thereby achieving a function as the disk diameter detecting means. have.

In addition, the region 58 in which the second lever U of the upper plate of the slide member S is disposed is more than the arrangement region 45 of the first lever M, as shown in FIG. It is formed one step lower by the thickness of two levers (U). Thus, since the area 45 and the area 58 are formed step by step with respect to the upper surface of the slide member S, the first lever M and the second lever U have the thickness of the plate member of the slide member S. It is mounted in the range, and their upper surface is aligned.

On the other hand, at the inner end of the second lever U, as shown in FIG. 7, the same disc support portion 61 as the disc support portion 41 of the first lever M is provided downward. These disk support parts 41 and 61 protrude inwardly of the slide member S through the opening 62 provided in the upper plate of the slide member S, as shown to FIG. 6 and FIG. Then, the disk is supported by touching the outer edge portion of the disk inserted into the slide member S and displacing inward. Moreover, the pin 64 which protruded upward at the front end of the outer side of the 2nd lever U protrudes into the opening opening 26 of the guide member G shown in FIG.

In addition, the second lever U is a direction in which the disc supporting portion 61 is displaced inward with the rotational movement shaft 55 as an axis by a spring 66 engaged with the spring mounting portion 65. Rotational movement is elastically supported. This spring 66 is provided in the fixed portion 67 of the slide member (S). In the ejected state of the disc (the disc is not inserted), the second lever U is in a state in which the disc support portion 61 abuts against the insertion side end surface 68 of the opening port 62 or in a state of rotational movement. have.

In addition, a ring portion 71 for mounting the clamper 70 is formed at a portion of the upper plate of the slide member S on the disc insertion side. The clamper 70 provided on the ring portion 71 moves together with the slide member S, and when the slide member S is transferred to the reproducing position of the disc reproducing apparatus, the turntable 17 mounted on the reproducing unit 4 is provided. ) Is located opposite to. Then, the clamper 70 abuts against the clamper push spring 35 and is pressed downward, and when the disk is seated on the turntable and lifted in the slide member S, the disk is pushed on the upper surface to slide the disk. It is to clamp so that it may not contact with (S).

Further, four projections 72 (only two on the left side) for preventing separation of the clamper 70 protrude upward from both sides of the ring portion 71. These projections 72 are guided by the opening guide 24 for the projection guide of the guide member G shown in FIG.

Next, the operation of the embodiment device configured as described above will be described.

9 is a view showing a state before a disc is inserted, FIG. 10 is a view showing a state in which a small-diameter disc is inserted, and FIG. 11 is a view showing a state in which the small-diameter disc is transferred to the disc reproducing position.

In the non-inserted state, as shown in FIG. 9, the first lever M is rotated counterclockwise by the elastic support force of the line spring 51, and the protrusion 42 is opened for the small diameter disc. It is located in the locking recess 23a formed in the front edge part of the sphere 23. At this time, the rotary shaft 55 of the second lever U is pushed by the inner end portion 53c of the slit 53 and positioned at the outer end of the opening port 56. As shown in FIG. 9, the pin 64 of the second lever U is in contact with the pinned portion 28 for the small diameter disk of the guide member G. As shown in FIG. In addition, the second lever U rotates in the clockwise direction in the drawing by the spring 66 with the rotational movement shaft 55 as the axis, and the base of the disc support portion 61 slides the slide member S. FIG. The disc insertion side end face 68 of the opening port 62 is brought into abutment.

In the state shown in FIG. 9, when the small-diameter disk is inserted into the slide member S, the disk support portion 41 of the first lever M is pushed outwardly in contact with the outer edge of the disk. Reference numeral M moves to the state shown in FIG. 10 based on the elastic bearing force of the sun spring 51. At this time, the rotational movement range of the first lever M is slightly because the disk diameter thereof is small, and the projection 42 is separated from the locking recess 23a and is able to engage the opening port 23 for the small diameter disk. It only displaces In this state, the rotary shaft 55 of the second lever U is held in engagement with the inner end portion 53c of the slit 53 of the first lever M. As described above, the rotary shaft 55 does not move from the outer end of the opening port 56.

When the small-diameter disk is pushed back in this state, the outer edge portion of the disk abuts against the disk supporting portion 61 of the second lever U in a deep position, and the state shown in FIG.

When the small-diameter disk is pushed in the state shown in FIG. 10, the disk support portion 61 is moved inward by being pushed by the disk, and the second lever U rotates counterclockwise about the rotational shaft 55. Exercise. The pin 64 of the second lever U moves the pinned portion 28 for the small diameter disk of the guide member G by the rotational movement of the second lever U about the rotational shaft 55. In contact with, the rotational movement is regulated. Then, the second lever U rotates in contact with the pinned portion 28 for the small-diameter disk and rotates with the pin 64 regulated in the rotational motion as a point, and the opening shaft 56 in which the rotational motion shaft 55 is engaged. The slide member S is pushed and moved toward the inner side of the guide member G, that is, toward the disc playing position.

The insertion of the disc is detected by the movement of the slide member S according to the rotational movement of the second lever U, and the motor is started, and the slide member S is guided by the movement of the driving member 10. It is drawn inside of. In addition, when the slide member S is pulled in, the protrusion 42 of the first lever M is guided by the opening port 23 for the small diameter disk, and shifts slightly inwardly. The small-diameter disk is drawn into the slide member S by the displacement of the first lever M inward, and is centered with respect to the clamper 70 to be in the state shown in FIG.

In addition, at the end of drawing-in of the slide member S, the pin 64 abuts against the contact member 30 for the small diameter disk and rotates the second lever U slightly counterclockwise. By the rotational movement of the second lever U, the disc supporting portion 61 is separated from the edge of the disc, and is avoided to the outside so as not to interfere with the clamp on the turntable of the disc and its rotation during disc regeneration.

On the other hand, the ejection from the inside of the disc reproducing apparatus of the small-diameter disc is made by moving the drive member 10 in reverse to move the slide member S from the disc reproducing position to the eject position. In this case, by moving the slide member S, the pin 64 of the second lever U is first separated from the abutting portion 30 for the small diameter disk of the guide member G, so that the second lever U is detached. It rotates clockwise by the elastic support force of the spring 66, and the disc support part 61 abuts on the outer edge part of a small diameter disc, and supports this disc. As a result, the small diameter disk moves toward the disk insertion position with the slide member S. As shown in FIG.

Then, the pin 64 of the second lever U comes into contact with the pinned portion 28 for the small diameter disk in accordance with the movement of the slide member S, and the slide member S is further restricted in a state where the movement thereof is restricted. If y continues to move, the second lever U rotates with the pin 64 in contact with the pinned portion 28 for the small-diameter disk as the point. By the rotational movement of the second lever U, the small-diameter disk is pushed forward by the disk support 61. As a result, the small-diameter disk is ejected from the disk insertion hole to a state that is halfway from the disk insertion hole as shown in FIG. In contrast, the large diameter disc is loaded into the disc reproducing apparatus as follows. Moreover, FIG. 12 is a view showing a state at the start of insertion of a large diameter disk, and FIG. 13 is a view showing a completion state of insertion of a large diameter disk. FIG. 14 is a view showing a state where the large diameter disc is pushed back in the inserted state of the large diameter disc, and FIG. 15 is a view showing the state where the large diameter disc is transferred to the playback position.

When the disc is not inserted, as shown in FIG. 9, the projection 42 of the first lever M is in the locking recess 23a of the opening 23 for the small diameter disc. The rotary shaft 55 of the two levers U is located at the outer end of the opening 56. The pin 64 of the second lever U is in contact with the pinned portion 28 for the small diameter disk of the guide member G.

In this state, when the large diameter disc is inserted, the first lever M is pressed by bringing the disc support portion 41 at its tip into contact with the outer edge of the large diameter disc, and rotates against the elastic support force of the sun spring 51. It rotates clockwise in the figure about the movement axis 43, and largely displaces it outward as shown in FIG. By the rotational movement of the first lever M, the rotary shaft 55 engaged with the slit 53 is pushed by the disc insertion side end portion 53a of the slit 53, It is shifted from the outer edge to the inner position. In addition, the projection 42 is removed from the locking recess 23a by the rotational movement to the outside of the first lever M, and brought to the position where it can be engaged with the large-diameter disk opening 22.

The entirety of the second lever U moves inward by the movement of the second lever U in the rotational movement shaft 55 with the rotational movement of the first lever M. As shown in FIG. In response to the movement of the second lever U, the pin 64 provided therein moves away from the position where it is engaged with the pinned portion 28 for the small diameter disk, and moves inward, as shown in FIG. It becomes a state.

When the large-diameter disk is inserted inward from this state, the inside of the inserted large-diameter disk abuts against the disk support portion 61 of the second lever U, and is pressed to rotate it. At this time, since the pin 64 has already deviated from the engagement position with the pinned portion 28 for the small diameter disk, the second lever U is rotated with the insertion of the large diameter disk. Rotate in the counterclockwise direction in the drawing. The rotational movement of the second lever U is made to resist the elastic bearing force of the spring 66.

Thus, as shown in FIG. 13 with the rotational movement of the second lever U, when the pin 64 contacts the pinned portion 27 for the large diameter disk, the pinned portion 27 for the large diameter disk is The rotational motion about the rotational axis 43 of the second lever U is regulated by

When the large diameter disc is inserted inward from the state shown in FIG. 13, the disc support portion 61 is moved inward by being pushed by the edge portion of the large diameter disc, and the second lever U moves the rotation shaft 55. Rotate in the counterclockwise direction. However, at this time, since the pin 64 of the second lever U is in contact with the pinned portion 27 for the large-diameter disk of the guide member G, the rotational movement is regulated, so that the second lever U has the large diameter. It rotates by making the contact part of the disk press part 27 and the pin 64 into a point. As a result, the slide member S which engages the opening opening 56 with the rotational movement shaft 55 of the second lever U causes the rotational movement shaft 55 of the rotational movement shaft 55 to accompany the rotational movement of the second lever U. By the displacement, it moves inward as shown in FIG.

The movement of the slide member S detects the insertion of the disk into the slide member S, the motor is started, and the drive member 10 is moved.

As a result of the movement of the drive member 10, the slide member S is drawn deep into the guide member G as shown in FIG. At the time of retraction, the projection 42 of the first lever M is engaged with the opening port 22 for the large diameter disk and moves inside the disk reproducing apparatus. The attitude of the first lever M is maintained by the guide of the projection 42 by the opening 22 for the large diameter disk, and the large diameter disk is supported by the first lever M and slides together with the slide member S. FIG. It is conveyed to the disc regeneration unit inside the guide member (G).

Moreover, when the insertion of the large diameter disk is completed, the pin 64 abuts against the contact portion 31 for the large diameter disk and rotates the second lever U again in the counterclockwise direction. The disc supporting portion 61 is detached from the edge of the large diameter disc by the rotational movement of the disc. The disc supporting portion 61 is retracted so as not to interfere with the clamp on the turntable of the disc and its rotation during disc reproduction.

The ejection of the large diameter disc loaded in the disc reproducing unit in this way is performed as follows.

When the drive member 10 is moved in the opposite direction in accordance with the ejection operation, the pin 64 deviates from the abutting portion 31 for the large-diameter disk with the movement of the slide member S, and the second lever U ) Rotates inward with the elastic support of the spring (66). By the rotational movement of the second lever U, the disc support portion 61 of the second lever U abuts the edge of the large diameter disc, and together with the disc support portion 41 of the first lever M, the large diameter disc Keep it.

In this state, the slide member S moves toward the disc insertion position integrally with the first and second levers M and U. When the slide member S reaches immediately before the disc insertion position, the pin 64 of the second lever U abuts against the pinned portion 27 for the large-diameter disc, and the movement thereof is restricted. The two levers U are rotated inward. By the rotational movement of the second lever U, the large diameter disk is pushed by the disk support portion 61 of the second lever U, slightly pushed forward of the apparatus, and ejected, and the state shown in FIG.

In this manner, in the state where the large diameter disk is protruded about half a minute from the disk insertion opening, when the large diameter disk is grasped by the hand and taken out, the first lever M rotates inward by the force of the spring 51 and the ninth diameter Return to the initial state shown in FIG.

Embodiments of the apparatus and its operation have been described above.

In summary, this slide device (S) is supported by the guide member (G) and installed freely between the disc regeneration position and the disc insertion position. The first lever M whose rotational movement angle is changed in accordance with the diameter of the disk inserted into S) is installed to be rotatable with the rotational axis 43 as a point, and the first lever M is engaged with the first lever M. The second lever U which is aligned, and the position of the rotational movement point (the position of the rotational driving shaft 55) is changed according to the diameter of the disc inserted in accordance with the rotational angle of the first lever M. The disc support portions 41 and 61 provided at one end of the first and second levers M and U are adapted to support the external edge portion of the disc inserted in the slide member S. And guide The member G has a rotary motion paper according to the diameter of the disk. It selectively engages with the pin 64 provided on the other end of the changed second lever U to restrict its rotational motion. When the second lever U rotates again, the second lever U accompanies the rotational motion. There is a point in which the pinned portions 26, 27 for moving the rotational movement shaft 55 itself to the disc reproducing position are arranged along the disc diameter. By selectively engaging the pins 64 and the pinned parts 26 and 27, the second lever U is shifted and thus the slide mechanism S is shifted to activate the loading mechanism. The slide member S is moved to the disc reproducing position by moving the drive member 10.

According to this configuration, the disc opening because the opening angle (rotational movement angle) of the first lever (U) and the rotational movement point of the second lever (M) and its rotational movement angle are controlled according to the diameter of the disk inserted into the slide member (S). Even if the diameters are different, the outer edge portion of the disk can be reliably supported and drawn to a predetermined position inside the slide member S, and it can be transferred to the disk reproducing position.

Furthermore, in response to the diameter of the inserted disc, the rotational movement point position of the second lever U (the position of the rotational shaft 55 relative to the slide member S) is changed, and the rotation of the second lever U is changed. Since the rotational movement regulating position (pressured part 26,27) for the movement is changed, the timing of the start of the movement of the slide member S with respect to the insertion amount of the disk can be changed according to the diameter of the disk. Therefore, the loading mechanism can be operated when the disc is inserted about halfway regardless of the disc diameter, and the disc handleability can be improved. In the ejection operation, the disk is pushed out by the rotational movement of the second lever U whose position of the rotational movement is changed according to the diameter of the disc. The handleability of can be improved further.

In addition, when the disc is not inserted, the first lever M receives the elastic support force of the spring 51 and is rotated inward, and the pin 42 provided on the first lever M is engaged. In this state, the pin 42 and the locking recess 23a are engaged with each other, thereby moving to the inside of the first lever M, that is, reproducing the disc of the slide member S. Movement to the position side is inhibited. Therefore, the loading mechanism is not operated unless the disc is inserted into the first lever M so as to displace the rotary motion outward, thereby preventing the malfunction thereof.

Furthermore, when the slide member S is moved, the pins 42 provided on the first lever M are selectively engaged with the openings 22 and 23 for the large diameter disc or the small diameter disc, respectively, in predetermined rotational movement positions. Since the disk is held, the disk can be reliably held as the first lever M and the second lever U regardless of the disk diameter, and the dropout can be prevented. Furthermore, when the slide member S reaches the disc regeneration position, the pin 64 provided on the second lever U is brought into contact with the abutting portions 30 and 31 of the guide member G so as to contact the second lever. (U) is rotated, whereby the upper disk with the second lever U separated from the disk is mounted on the turntable, so that the first and second levers M and U are not disturbed when the disk is reproduced. It works.

Moreover, this invention is not limited to the Example mentioned above, A various change is possible within the scope of the summary of this invention described in the claim.

(1) In the embodiment, the digital diameter detecting means is the first lever M having the disc supporting portion, but other means for detecting the diameter of the disc may be used. Incidentally, when the disc diameter is detected using the first lever M, the number of parts can be reduced because the first lever M also serves as the support portion of the disc.

(2) In the embodiment, although the slide member pressing means is the second lever U having the disc support portion, other means for pressing the slide member may be used. In addition, in the case where the second lever U has a slide member pressing function similarly to the first lever M described above, the number of parts can be reduced because the second lever U also serves as the support portion of the disk.

(3) In the embodiment, the large-diameter disk is a CD of 12 cm, and the small-diameter disk is a CD of 8 cm. However, it can be configured to cope with other disks of different diameters, for example, laser disks.

(4) When a medium-size disc other than a large-diameter disc and a small-diameter disc is handled as a disc reproducing apparatus, it is also possible to provide a presser portion for an intermediate disc in addition to the presser portion for a large-diameter disc and a presser portion for a small diameter disc.

As described above with respect to the present invention, according to the present invention, a disk inserted into the slide member along the disk surface is drawn at a predetermined position in the slide member by simply inserting about half of the disk, regardless of its diameter. Can be transferred to the disc playback position. Furthermore, the ejection amount of the disk during ejection can also be about half that of the disk, regardless of the disk diameter. Therefore, the mounting of the disk to the apparatus main body and its ejection operation can be simplified, and the handling of the disk can be sufficiently increased.

Claims (6)

A slide member (S) movable between the insertion and disengagement position for inserting the disc (CD) in parallel with the disc surface and for inserting or escaping the disc along the guide member (G) and the reproducing position for performing disc reproduction; The first and second levers M are freely supported by the slide member, pressed to the outer edge of the disc inserted into the slide member, and retracted by an amount corresponding to the disc diameter, and are freely supported by the slide member. A second lever U for changing the position of the rotational movement point on the slide member according to the retraction amount of the lever, and pushing the end portion 61 to the outer edge of the disc inserted in the slide member, and the diameter of the disc to the guide member. The second lever is formed in accordance with, and the second lever is to avoid the contact with the other end 64 of the second lever when the one end to rotate the rotary motion to the outer edge of the disk And a driving device (10) which starts when the slide members (27, 28) move a predetermined amount from the insertion release position toward the play position and moves the slide member to the play position. . The method of claim 1, wherein the first and second levers are arranged in a pair of right and left symmetrical pairs, and the left and right first and second levers are elastic pieces in a direction approaching each other to elastically support the disk in the slide member. Disc playback apparatus characterized by. 3. The guide member according to claim 2, wherein the guide member has a plurality of guide portions (22, 23) along the disc diameter in pairs, and paired by a corresponding guide portion when the slide member moves from the insertion release position to the play position. And controlling the distance between the first levers of the first lever and supporting the disc in the slide member at the center position in the left and right directions. 3. The disc reproducing apparatus as set forth in claim 2, wherein the pair of first levers abut against the guide member at the most approaching position to prohibit the movement of the slide member from the insertion release position to the reproduction position. 3. The pair of second levers according to claim 2, wherein each pair of the second levers is brought into contact with the pressed portion along the disc diameter when the slide member moves from the regeneration position to the insertion release position. And a disk for rotating in the direction in which the disk in the slide member is pressed back. 3. The guide member according to claim 2, wherein the guide member has a plurality of pairs of abutting portions 30 and 31 along the disc diameter in lateral symmetry, and when the slide member reaches the regeneration position from the insertion release position, And each end of the pair of second levers is separated from the disc in the slide member by bringing each other end of the lever into a corresponding contact portion.