JP2002050101A - Disk reproducing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk reproducing apparatus which can perform the positioning and release of a disk by a positioning member without resorting to energizing force and to which various kinds of optical pickups can be applied. SOLUTION: The disk reproducing apparatus 10 having, on the turning member 50, a positioning member 51 to perform the positioning of a minor diameter disk 70 is provided with an engagement part 54 on one end of the turning member 50, a first transmission guide member 25 freely slidable along a guide rail 20, a driving means 37 to generate driving force to slide the first transmission guide member 25 along the guide rail 20, driving force transmitting means 31 to 33 to transmit the driving force to the first transmission guide member 25, a second transmission guide member 42 which starts to impart the driving force from the driving force transmitting means 31 to 33 even when the driving force imparted by the first transmission guide member 25 stops, and an arm member 40 turned by imitating the second transmission guide member 42 when the driving force starts to be imparted to the second transmission guide member 42 and engaging with the engagement part 54 on the other end side of the side opposite to the side provided with the second transmission guide member 42.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk reproducing apparatus provided with a positioning mechanism for restricting the insertion position of a disk such as an optical disk.

[0002]

2. Description of the Related Art There are compact discs and single compact discs in which music data is recorded as digital data. The compact disc has a diameter of 12 cm, and the single compact disc has a diameter of 8 cm. For this reason, there is a type of disc reproducing apparatus that can reproduce both such a compact disc and a single compact. In the following description, a compact disc will be described as a large-diameter disc, and a single compact disc will be described as a small-diameter disc.

Here, as a conventional disk reproducing apparatus,
There is one described in Japanese Patent Application No. 3-339672. In the disc reproducing apparatus described in this publication, a moving member and a contact member are provided. The contact member is configured to move by rotation between a first position for positioning the small-diameter disk on the disk drive unit and a second position for comparison with the disk insertion path. That is, the disk is positioned in contact with the small-diameter disk, and after the positioning, the disk is retracted so as not to hinder the rotation of the small-diameter disk.

The moving member reciprocates within a certain range when inserting and ejecting small- and large-diameter discs. When the moving member moves in one direction, the contact member moves in the first position direction. Is biased by the biasing member. When the moving member moves in the other direction, the contact member is urged by the urging member in the second position direction. Furthermore, a lock mechanism is provided, and when the disc inserted is identified as having a small diameter by the identification means, the contact member urged in the second position direction by the urging member when the disc is inserted is locked by the lock mechanism. Lock in the first position. After the disk is positioned by the contact member, the lock mechanism releases the locked state.

[0005]

The disk reproducing apparatus described in the above publication is configured to urge the contact member via the urging member as the moving member moves. As described above, the configuration in which the contact member is brought into contact with the urging member in accordance with the movement of the moving member is likely to be mechanically complicated, and has a problem that the cost is increased due to the large number of parts when implemented. ing.

[0006] Usually, the casing of the disc reproducing apparatus is formed longer in the horizontal direction perpendicular to this direction than in the vertical direction in which the disc is inserted and ejected. Some guide rails inside the housing are arranged so that the length in the vertical direction is longer than the length in the horizontal direction (that is, θ <45 degrees in FIG. 16A). further,
As described in the above publication, there is also a configuration in which a rack member integrated with an optical pickup protrudes further inward (disc insertion port side) than the center of the disc by α.

In such a configuration, for example, in an optical pickup having a large width in the direction along the guide rail, a sufficient stroke for rotating the urging member cannot be secured unless the optical pickup is moved to the disk insertion port side. Had a problem. In other words, the arrangement of the guide rails described in this publication has a problem that the application is limited depending on the shape of the optical pickup. Therefore, in an optical pickup having such a shape, FIG.
Although the guide rails are arranged so that θ> 45 degrees as shown in FIG. 6B, this arrangement has a problem that the mechanism having the moving member and the contact member described in the official gazette cannot be adopted. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to enable positioning of a positioning member with respect to a disk and release of positioning without using an urging force, and to provide an optical pickup having various shapes. It is an object of the present invention to provide a disk reproducing apparatus to which the above can be applied.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a positioning member for positioning a small-diameter disk in a housing together with a guide rail capable of guiding the sliding of an optical pickup. The positioning member is attached to a rotatable rotating member, and one end of the elongate member has an engaging portion separated from the rotating shaft of the rotating member by a predetermined distance. A first transmission guide member slidably provided along the guide rail, and a driving means for generating a driving force for sliding the first transmission guide member along the guide rail. A driving force transmitting means for transmitting the driving force generated by the driving means to the first driving means, and a driving force transmitting means for the first transmitting and guiding member provided separately from the first transmitting and guiding member. A second transmission guide member for which the application of the driving force from the driving force transmission means is started when the application of the driving force from the first transmission guide member is stopped, and a first transmission guide member for the second transmission guide member. When the application of the driving force is started from, the second transmission guide member is rotated in accordance with the second transmission guide member, and the engagement portion is provided at the other end opposite to the side on which the second transmission guide member is provided. And an arm member to be engaged with the arm.

As described above, when the application of the driving force from the driving force transmitting means to the first transmission guide member is stopped,
A second time at which the application of the driving force from the driving force transmitting means is started;
When the application of driving force to the second transmission guide member is started, the arm member is rotated following the second transmission guide member. The other end of the arm member is engaged with the engaging portion. For this reason,
The driving force is transmitted to the second transmission guide member by the transmission of the driving force from the driving unit, and the arm member is rotated by the application of the driving force to the second transmission guide member. As a result, the rotating member having the engaging portion is rotated, and the positioning member provided on the rotating member is also rotated. By the rotation of the positioning member, it is possible to favorably switch between the positioning state of the small-diameter disk and the positioning release state.

According to another aspect of the present invention, in addition to the above-described invention, the driving force transmission means and the first transmission guide member, and the driving force transmission means and the second transmission guide member are engaged with each other to drive. Force transmission is to be performed. As described above, by employing the gears for transmitting the driving force to each other by meshing with each other, the driving force can be transmitted reliably and with less play.

Further, according to another invention, in addition to the above-mentioned inventions, the housing is formed so as to be longer in a direction orthogonal to the direction in which the disk is inserted, and the guide rail is formed in a direction in which the disk is inserted. It is arranged inside the housing so that the direction perpendicular to the direction in which the disk is inserted is longer than the direction in which the disk is inserted.

As described above, since the guide rails are arranged so that the direction perpendicular to the direction in which the guide rails are inserted is longer than the direction in which the disc is inserted, the guide rails are arranged in accordance with the shape of the housing. In addition, by disposing the guide rail so that the direction perpendicular to the direction in which the disc is inserted becomes longer, even if the guide rail does not protrude so much toward the side where the disc is inserted, a stroke for rotating the rotating member is provided. Can be secured.

According to another aspect of the invention, in addition to the above-described aspects, the second transmission guide member and the arm member are provided integrally, and the driving force transmission means and the arm member are provided separately. It is assumed that it is provided in a special way. Therefore, when the second transmission guide member and the driving force transmission member are in a state of transmitting the driving force, the arm member also rotates with the movement of the second transmission guide member. As a result, it is possible to rotate the engaging portion engaged at the other end of the arm member, and this rotation rotates the Kaizu member to switch between the positioning state of the positioning member and the positioning release state. Can be performed favorably.

In another aspect of the present invention, in addition to the above-mentioned invention, the first transmission guide member is further provided with a second transmission guide member for driving force transmitting means by pushing an arm member and rotating it by a predetermined amount. Is provided with a push-in portion for engaging with. As described above, the pushing portion is provided on the first transmission guide member, and the arm member is rotated by the pushing portion, and the second transmission guide member provided integrally with the arm member is also rotated. Thereby, it becomes possible to provide an opportunity for the driving force transmission means to engage with the second transmission guide member.

According to another aspect of the present invention, in addition to the above-described aspects, the second transmission guide member is provided separately from the arm member, and the driving force transmission means and the arm member are separated from each other. The driving force transmitting means is provided integrally so that the driving force transmitting means can move from the first transmission guide member to the second transmission guide member.

Therefore, the transmission of the driving force from the driving force transmitting means enables the driving force transmitting means to move from the first transmission guiding member to the second transmission guiding member. Further, with the movement of the driving force transmitting means, the arm member provided integrally with the driving force transmitting means is rotated. Then, by the rotation of the arm member, it is possible to switch between the positioning state of the positioning member and the positioning release state.

According to still another aspect of the present invention, in addition to the above-mentioned inventions, a swing member capable of changing the direction of the driving force from the arm member and transmitting the driving force to the rotating member is provided. It was done. Thus, by providing the swing member, it is possible to transmit the driving force by changing the direction according to the shape of the rotating member.

In another aspect of the invention, in addition to the above-described inventions, a rotation range restricting member for restricting the rotation range of the arm member is further provided. By providing the rotation range regulating member in this manner, the arm member does not rotate excessively.

Still further, in addition to the above-mentioned inventions, the present invention further comprises a disc diameter discriminating mechanism for discriminating the diameter of the disc to be inserted, and based on the disc diameter discriminated by the disc diameter discriminating mechanism. The control means controls the driving of the driving means.

By providing such a disc diameter discriminating mechanism, it is possible to recognize whether the disc to be inserted is a large-diameter disc or a small-diameter disc. By recognizing the type of the disc by the disc diameter discrimination mechanism, the control unit can control the transmission of the driving force of the driving unit thereafter.

According to another aspect of the present invention, in addition to the above-mentioned inventions, the disc diameter identifying mechanism further includes a first identifying means and a second identifying means, and the first identifying means when the disk is slid. If the object to be identified identified by the second identification means is provided, and the object to be identified passes only through the first identification means with insertion of the disk, the disk is regarded as a small-diameter disk. Recognizing and instructing the control means to continue driving the driving means even when the application of the driving force from the driving force transmitting means to the first transmission guide member is stopped, Identification means and the second
The disc is recognized as a large-diameter disc when passing through both of the discriminating means, and when the application of the driving force from the driving force transmitting means to the first transmission guide member to the control means is stopped, An instruction is given to stop the means.

As described above, when the object to be identified has passed through only the first identification means, the disc is recognized as a small-diameter disk, and the object to be identified is identified by the first identification means and the second identification means. When the disk has passed the means, the disk is recognized as a large-diameter disk. By adopting such a configuration, it is possible to satisfactorily recognize the type of the disc. Further, when the small-diameter disk is inserted by the control of the control means, the driving means continues to be driven even when the application of the driving force from the driving force transmission means to the first transmission guide member is stopped. When the large-diameter disc is inserted, when the application of the driving force from the driving force transmission unit to the first transmission guide member is stopped, the driving unit is stopped. By doing so, it is possible to prevent the drive means from being continuously driven when a large-diameter disc is inserted.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows an in-vehicle disc reproducing apparatus 1 according to the present invention.
FIG. 2 is a perspective view showing a configuration of a No. 0. In this figure, a disc reproducing apparatus 10 has a housing 11 having a disc insertion opening 12 formed on a front surface. The housing 11 is a straight line X in FIG.
The direction orthogonal to this was provided longer than the direction of
It has a horizontally long shape.

In the housing 11, vibration from a car is prevented.
An anti-vibration damper 13 for reduction is provided, and a drive chassis 14 is mounted via the anti-vibration damper 13. Also, on the upper surface of the drive chassis 14, the disk 7
There is provided a turntable 15 for mounting and rotating the “0”. It should be noted that the turntable 15 is
It is attached to a drive motor (not shown) fixed to the lower part.

In the vicinity of the turntable 15, the disk 7
An optical pickup 16 is provided for detecting reflected light out of the light radiated to 0 and reading out the data recorded on the disk 70. This optical pickup 1
6 is mounted on a support plate 17. The optical pickup 16 includes an emission unit 18 that emits laser light to the disk 70, and a lens 19 that receives laser light reflected from the disk 70. The lens 19 is cantilevered by a wire 19a extending from the main shaft 21 side.

The support plate 17 to which the optical pickup 16 is attached is disposed between the pair of guide rails 20. The guide rail 20 includes a main shaft 21 that guides the sliding of a rack member described later and a sub shaft 22 that simply guides the sliding of the support plate 17. The sliding of the support plate 17 is guided along such a guide rail 20, so that the support plate 17 can reciprocate within a certain distance corresponding to the disk recording surface of the disk 70. As shown in FIG. 1, the guide rail 20 is provided so that the optical pickup 16 moves toward the upper left of the paper from the center of the disk 70 toward the outer periphery.

The guide rail 20 is, as shown in FIG.
It is provided so that its longitudinal direction has an angle of about 50 degrees with respect to the disk insertion direction (the direction indicated by the straight line X in FIG. 1) inserted from the disk insertion slot 12. That is, since the housing 11 is formed in a horizontally long shape, the guide rails 20 are arranged so that the direction orthogonal to the straight line X is long corresponding to the shape of the housing 11.

A rack gear member 25 as a first transmission guide member is slidably attached to the main shaft 21. The rack gear member 25 has a plurality of rack gears 26 formed on the side opposite to the direction toward the turntable 15 (the outer peripheral side of the disk 70). A push-in portion 27 protruding toward the upper surface of the disk 70 is formed at an end on the far side of the rack gear member 25. The pushing portion 27 is for pushing the distal end portion of an arm member 40 described later to rotate the arm member 40.

The rack gear member 25 is connected to the optical pickup 1.
6 is integrally attached to the support plate 17 to which the attachment 6 is attached. Therefore, the optical pickup 16 and the rack gear member 25 are provided so as to slide integrally.
In order to regulate the movement distance of the rack gear member 25 by sliding along the main shaft 21, a stopper member 28 projects upward from the bottom surface of the housing 11 coaxially with the sliding direction of the rack gear member 25. Is provided. further,
A detection switch 29 is provided near the stopper member 28.

A first floating gear 32 constituting the floating gear mechanism 30 meshes with the rack gear 26. here,
The floating gear mechanism 30 includes a driving motor 37 as a driving unit.
And a first floating gear 32 coaxially mounted with the large-diameter gear 31. A projecting pin 34 is formed on the large-diameter gear 31 so as to face upward. In addition, the first floating gear 32 is formed with an elongated hole 35 through which the projecting pin 34 can be passed to allow it to float. Therefore, when the first floating gear 32 is attached to the large-diameter gear 31 so as to overlap with the large-diameter gear 31, a predetermined play in the rotation direction of the first floating gear 32 is provided.

The first floating gear 32 is provided with a second floating gear 33 superposed thereon. The second floating gear 33 has a fitting hole 33a into which the projecting pin 34 is fitted. As a result, the driving force received by the large-diameter gear 31 from the driving motor 37 is directly transmitted to the second floating gear 33.
It is possible to communicate to. A spring member 36 is provided between the first floating gear 32 and the second floating gear 33. Therefore, even when the first floating gear 32 meshing with the rack gear member 25 does not rotate,
The second floating gear 33 rotates while applying an urging force between the second floating gear 33 and the second floating gear 33.

The large-diameter gear 31 and the first floating gear 3
2, a driving force transmitting means is constituted by the second floating gear 33 and the spring member 36. In addition, the first floating gear 3
When only the second floating gear 33 rotates without rotating the second floating gear 33, the range in which the second floating gear 33 can rotate is the range in which the long hole 35 is formed.

A support shaft 4 is provided above the second floating gear 33.
The arm member 40 is provided so as to be rotatable around the center 1. The support shaft 41 is connected to the first floating gear 32.
And a rotating shaft 39 which is the center of rotation of the second floating gear 33. An arc-shaped rack 42 as a second transmission guide member is attached to the lower surface of the arm member 40. The arc-shaped rack 42 is provided so that the second floating gear 33 can be engaged with the arc-shaped rack 42 by the rotation of the arm member 40. Further, on one end side of the arm member 40, a contact portion 43 capable of contacting the pushing portion 27 is provided. The contact portion 43
The width of one end side of the arm member 40 is formed to be small, and the edge side is formed in an arc shape.

The other end of the arm member 40 has an upright portion 4 bent upward by a predetermined height.
It is 4. The upright portion 44 has a cutout portion 45 cutout downward at the center in the width direction. An engagement portion 54 of a rotating member 50 described below is dropped into the notch portion 45. For this reason, the arm member 4
The rotation member 50 is configured to be rotatable by the swing of 0.

It is preferable that the engaging portion 54 dropped into the notch portion 45 be attached via a predetermined slip prevention member in order to prevent the engaging portion 54 from coming off from the notch portion 45.

A spring 46 is attached to the arm member 40 at a position close to the other end. The other end of the spring 46 is attached to a projecting member 46 a provided so as to project from the bottom of the housing 11. The protruding member 46 a is configured to apply an urging force to the arm member 40 to rotate the arm member 40. That is, usually, the arm member 40
Is turned in the direction of arrow A in FIG. 2 by the urging force given by the spring 46.

A detection switch 47 is provided at a position opposite to the side where the spring 46 is provided and via the arm member 40. The detection switch 47 performs a switching operation when the upright portion 44 of the arm member 40 passes therethrough.

When the small-diameter disk 70 is inserted, a positioning pin 51 provided on the rotating member 50 is provided at the rear end of the disk 70 so as to be positionable. The rotating member 50 is a long rod-like member,
1 is provided substantially parallel to the insertion opening of the disk 70 on the inner side. The rotating member 50 is configured to be supported by a bearing 52 provided on the rear surface of the upper part of the housing 11. The bearing 52 may be provided with a leaf spring or the like so as to be elastically supported.

As shown in FIG. 7, the positioning pin 51 attached to the rotating member 50 includes a positioning portion 51a for positioning the small-diameter disk 70, and a small-diameter portion 51b at the tip of the protruding side. . Of these, the small diameter part 5
1b is for providing a gap between the small-diameter disk 70 and the disk 70 when the small-diameter disk 70 is placed on the turntable 15 so as not to hinder the rotation of the disk 70.

As shown in FIG. 2, of the rotating member 50,
On the rack gear member 25 side, the end portion side of the portion supported by the bearing portion 52 is a bent portion 53 that is bent substantially perpendicularly to the longitudinal direction of the rotating member 50. When the bent portion 53 further advances toward the end portion of the rotating member 50, the engaging portion is bent substantially perpendicularly to the bent portion 53 and provided substantially in parallel with the longitudinal direction of the rotating member 50. 54 are formed. The engagement portion 54 is dropped into the notch portion 45, and can rotate integrally with the arm member 40.

In the vicinity of the insertion opening of the disk 70, a disk diameter identification mechanism 60 is provided. As shown in FIG. 1, the disc diameter identification mechanism 60 has a slide groove 61 formed parallel to the longitudinal direction of the disc insertion port 12 and penetrating the upper part of the housing 11. Slide groove 6
A pair 1 is formed so as to be symmetric with respect to the center of the disc insertion slot 12 so as to be symmetrical. A pair of slide pins 62 as symmetrical objects are slidably inserted into the pair of slide grooves 61. One end of a spring 63 is attached to the slide pin 62. The other end of the spring 63 is attached to a receiving portion 64 provided at the center of the disk insertion slot 12. For this reason, when the pair of slide pins 62 are slid so as to widen each other, the slide pins 62 are provided to apply an urging force.

Here, at a predetermined position along the slide groove 61, a first identification switch 6 as first identification means is provided.
5 and a second identification switch 6 as second identification means
6a and 66b are provided so as to be located. Among them, the first identification switch 65 is provided with any disk 70.
Is recognized at an early stage, and rotation of a disk feed roller (not shown) is started. The second identification switches 66a and 66b have a role of comparing the on / off state within a certain period of time to determine and recognize the diameter of the disk 70. The second identification switches 66a and 66b are respectively provided in the left and right slide grooves 61 of the disc insertion slot 12 in FIG. 1 for comparison of the on / off state.

Here, the states of the first identification switch 65 and the second identification switches 66a and 66b until the disk 70 of each diameter is inserted from the disk insertion slot 12 and the loading of the disk 70 is completed, based on FIG. Will be explained. First, when a small-diameter disk 70 having a diameter of 8 mm is inserted from the center of the disk insertion slot 12, only the first identification switch 65 is turned on, as shown in FIG. 66a and 66b are turned off. The control means (not shown) connected to the first identification switch 65 and the second identification switch 66a, 66b turns on / off the first identification switch 65 and the second identification switch 66a, 66b. Upon receiving the signal, it is determined that the small-diameter disk 70 has been inserted.

As shown in FIG. 8B, when the 8 mm small-diameter disk 79 is inserted rightward in the disk insertion slot 12, the first identification switch 65 and the second identification switch 66a are turned on. , Second identification switch 6
6b is turned off. Thereby, the control means determines that the small-diameter disk 70 has been inserted in this case as well. Further, as shown in FIG.
When 0 is inserted to the left at the disc insertion slot 12, the first identification switch 65 and the second identification switch 66b are turned on, and the second switch 66a is turned off. Thereby, the control means determines that the small-diameter disk 70 has been inserted in this case as well. Further, as shown in FIG. 8D, when a large-diameter disc 70 of 12 mm is inserted through the disc insertion slot 12, the first discrimination switch 6
5 and the second identification switches 66a and 66b are all turned on. Thereby, in this case, the control means determines that the diameter disc 70 has been inserted.

The operation of the disk reproducing apparatus 10 having the above configuration will be described below.

First, when the small-diameter disk 70 is inserted from the disk insertion port 12, the slide pins 62 shown in FIG. 1 move so as to be far from each other. Then, when the slide pin 62 has passed only the first identification switch 65, the first identification switch 65 issues an ON signal as shown in FIG. Thereby, the disc diameter discrimination mechanism 60 discriminates the inserted disc 70 as the small-diameter disc 70, and the control means controls the rotation drive of the drive motor 37. The first identification switch 65, the second identification switch 66a, and the first identification switch 6
The same applies to the case of passing through No. 5 and the second identification switch 66b. These states are shown in FIGS. 8B and 8C.

The small-diameter disk 70 is loaded into the housing 11 by a loading mechanism (not shown). However, before the small-diameter disk 70 is loaded to the far side of the housing 11, the drive motor 37 is operated and the positioning pins 5 attached to the rotating member 50 are moved.
1 is rotationally driven. Thereby, the positioning pin 51
Is provided at a position orthogonal to the insertion direction of the disk 70. The details will be described below.

As shown in FIG. 4, when the drive motor 37 is driven, the large diameter gear 31 is driven to rotate in the direction of arrow B. Then, a driving force is transmitted from the large-diameter gear 31 to the first floating gear 32, and the first floating gear 32 is also driven to rotate in the same direction of arrow B. Then, since the first floating gear 32 and the rack gear 26 mesh with each other, the rack gear member 25 is slid in the direction indicated by the arrow C. Note that the slide drive of the rack gear member 25 causes the support plate 17 and the optical pickup 16 attached to the rack gear member 25 to slide toward the center of the information recording surface of the disk 70.

When the rack gear member 25 slides in the direction of arrow C, the end of the rack gear member 25 eventually collides with the stopper member 28 as shown in FIG. Due to this collision, the slide drive of the rack gear member 25 is stopped thereafter. Here, when the rack gear member 25 collides with the stopper member 28, the on / off operation of the detection switch 29 provided near the stopper member 28 is switched. However, when the small-diameter disk 70 is inserted, the control means is controlled so as not to stop the drive of the drive motor 37 by the electric signal generated from the detection switch 29.

Further, shortly before the rack gear member 25 collides with the stopper member 28, the pushing portion 27 of the rack gear member 25 comes into contact with the contact portion of the arm member 40. Then, when the rack gear member 25 advances,
While maintaining the contact state between the two, the arm member 40
It will be in the state rotated toward the direction. Then, if the arm member 40 rotates in the direction of the arrow D for a while, the arc-shaped rack member 42 meshes with the second floating gear 33 member.

When the arc-shaped rack 42 meshes with the second floating gear 33, the driving force of the drive motor 37 is transmitted to the arc-shaped rack 42 via the second floating gear 33. Thus, the arm member 40 to which the arc-shaped rack body 42 is attached further advances in the direction of arrow D.
Then, the upright portion 44 at the other end of the arm member 40 is rotated in the direction of arrow E. As a result, the engaging portion 5 dropped into the cutout portion 45 of the upright portion 44
4 is rotated in the same arrow F direction. Then, the positioning pin 51 attached to the rotating member 50 rotates in the direction of arrow G, and receives the loaded small-diameter disk 70 to position the small-diameter disk 70. As described above, the small-diameter disc 70
Is achieved.

Here, even if the movement of the rack gear member 25 is stopped, the driving force from the driving motor 37 remains applied. Therefore, the large-diameter gear 31 tends to continue to rotate, but cannot rotate because the first floating gear 32 is meshed with the rack gear member 25. Therefore, the projecting pin 34 of the large-diameter gear 31 rotates through the long hole 35,
The driving force is applied to the second floating gear 33.

However, as the protruding pin 34 advances through the elongated hole 35, the biasing force accumulated in the spring member 36 gradually increases. Then, the protruding pin 34 slides inside the long hole 35 until the protruding pin 34 advances to the end of the long hole 35 or the driving of the drive motor 37 is stopped by switching of the detection switch 47. This is the case (the case where the switch of the detection switch 47 is switched is described below).

After the positioning of the small-diameter disk 70, the small-diameter disk 70 moves downward and is placed on the turntable 15, as shown in FIG. At this time, the small-diameter disk 70 is
Moves slightly to the side away from. At the same time, the small diameter portion of the positioning pin 51 faces the edge of the disk 70. For this reason, the gap between the disk 70 and the positioning pin 51 is widened, and thereafter, the disk 70 and the positioning pin 5
1 is configured so that the disk 70 can be favorably driven to rotate without contact with the disk 1.

When the arm member 40 has sufficiently rotated in the direction of arrow E to pass the detection switch 47, the detection switch 47 issues an electric signal to the control means. Thereby, the control means controls the drive motor 37 to stop.

Next, the case where the large-diameter disk 70 is inserted from the disk insertion port 12 will be described. In this case, the slide pins 62 move so as to be far from each other. At the same time, the slide pin 62 is connected not only to the first identification switch 65 but also to the second identification switches 66a and 66.
b also passes. For this reason, as shown in FIG. 8D, the first identification switch 65 and the second identification switch 66
Both a and 66b generate an ON signal. As a result, the disc diameter identification mechanism 60
Is identified as a large-diameter disk 70, and the control means controls the rotation of the drive motor 37.

Then, the large-diameter disk 70 is loaded into the housing 11 by a loading mechanism (not shown). Here, when the drive motor 37 is driven, the large-diameter gear 31 is driven to rotate in the direction of arrow B. Then, the driving force is transmitted from the large diameter gear 31 to the first floating gear 32,
The first floating gear 32 is also driven to rotate in the same arrow B direction. Further, a driving force is transmitted from the first floating gear 32 to the rack gear 26, and the rack gear member 25 is slid in the direction indicated by the arrow C.

When the rack gear member 25 slides in the direction of arrow C, the end of the rack gear member 25 will eventually collide with the stopper member 28. Due to this collision,
Thereafter, the slide progress of the rack gear member 25 is stopped. Here, when the large-diameter disk 70 is inserted, the rack gear member 25 collides with the stopper member 28 to switch the detection switch 29 on and off.
The control means controls the driving of the drive motor 37 to stop.

As a result, the rotating member 50 does not rotate, and the positioning pin 51 maintains a state of being substantially parallel to the disk 70 as shown by the solid line in FIGS. Then, by the loading mechanism, the large-diameter disk 70 passes through the position where the positioning pin 51 is provided, and is inserted to the back.

When both the small-diameter disk 70 and the large-diameter disk 70 are ejected from the inside of the housing 11, the disc 70 is ejected as it is by the loading mechanism. Here, when the small-diameter disk 70 is ejected, the drive motor 37 rotates in a direction opposite to that when the disk 70 is inserted, and rotates the rack gear member 25 in a direction opposite to the direction indicated by the arrow C. Thereby, the second floating gear 33 rotates in the reverse direction, and the arm member 40 is rotated in the direction opposite to the direction shown by the arrow D.

Further, due to this rotation, the mesh between the arc-shaped rack body 42 and the second floating gear 33 is released after a while. When the time further elapses, the pushing portion 27 separates from the contact portion 43. As a result, the arm member 40 rotates and the rotating member 50 rotates to move the positioning pin 51.
Is rotated in the direction opposite to the direction indicated by arrow G. Then, the positioning pin 51 moves to the position shown by the solid line in FIGS. 1 and 2, and is ready for the next insertion of the disk 70.

The arm member 40 has a spring 4
6 is connected, the arm member 40 is maintained so as not to rotate by the urging force of the spring 46 thereafter.

According to the disk reproducing apparatus 10 described above, even when the application of the driving force from the floating gear mechanism 30 to the rack gear member 25 is stopped, the arc-shaped rack 42
The arm member 40 is rotated following the arc-shaped rack body 42 by meshing with the second floating gear 33. The rotation of the arm member 40 causes the rotation member 50 engaged by the engagement portion 54 to rotate. Thereby, the positioning pin 51 is also rotated. In this way, if the positioning pin 51 rotates, it is possible to favorably switch between the positioning state of the small-diameter disk 70 and the positioning release state.

The rack gear member 25 and the first floating gear 32 and the arc-shaped rack body 42 and the second floating gear 33 are configured to transmit driving force by gear engagement. By adopting such a configuration, transmission of driving force is ensured,
In addition, it is possible to perform the operation with little play.

Further, the casing 11 is formed so that the direction perpendicular to the direction in which the disc 70 is inserted is long,
The guide rail 20 is arranged inside the housing 11 so that the direction orthogonal to the direction in which the disk 70 is inserted is longer than the direction in which the disk 70 is inserted. For this reason, the guide rails 20 corresponding to the horizontally long shape of the housing 11 can be arranged. Also,
By arranging the guide rails 20 so that the direction orthogonal to the direction in which the disc 70 is inserted becomes longer, even if the guide rails 20 do not protrude much toward the disc insertion port 12, the turning member 50 can be turned. Can be secured.

Further, the arc-shaped rack body 42 is provided integrally with the arm member 40 and the second floating gear 33
An arm member 40 is provided separately from the above. For this reason, when the arc-shaped rack 42 and the second floating gear 33 are in mesh with each other to transmit the driving force, the arm member 40 is driven by the second floating gear 33 of the arc-shaped rack 42. Can be rotated. The rotation of the arm member 40 makes it possible to switch between the positioning state of the positioning pin 51 and the positioning release state.

Further, as the rack gear member 25 advances, the push-in portion 27 moves the arm member 4 before the rack gear member 25 collides with the stopper member 28.
The contact portion 43 of 0 is pushed in. This allows the arm member 40 to rotate, thereby providing a trigger for the second floating gear 33 and the arc-shaped rack body 42 to mesh with each other, whereby the second floating gear 33 and the arc-shaped rack body 42 can be meshed well. Becomes possible.

Also, the provision of the disc diameter discriminating mechanism 60 allows the drive motor 37 to be accurately driven by a command from the control means depending on the type of the diameter of the disc 70 to be inserted.
Can be driven. In this case, when the slide pin 62 passes only through the first identification switch 65, the inserted disk 70 is recognized as a small-diameter disk. The same applies to the case where the signal passes through the first identification switch 65 and the second identification switch 66a and the first identification switch 65 and the second identification switch 66b.

When the slide pin 62 passes through the first identification switch 65 and the second identification switches 66a and 66b, the inserted disk 70 is recognized as a large-diameter disk. By such recognition, when the small-diameter disk 70 is inserted, the rack gear member 25
The drive motor 37 continues to be driven even if the progress of the movement is stopped. When the large-diameter disk 70 is inserted, the drive motor 37 is stopped when the movement of the rack gear member 25 stops. In this way, when the large-diameter disk 70 is inserted, it is possible to prevent the drive unit from being driven extra.

(Second Embodiment) Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. The members described in the second embodiment will be described with the same reference numerals used for the same members as in the first embodiment.

In the disc reproducing apparatus 80 of the present embodiment as shown in FIG. 9, the push-in portion 27 shown in the first embodiment is not formed at the far end of the rack gear member 25. Instead, the guide portion 81 is located near the rear end of the rack gear member 25 and on the rack gear 26 side.
Are formed. The guide portion 81 is formed by cutting out the rack gear member 25 so as to face the turntable 15 from the rack gear 26 side. Also, the guide section 81
Has a tapered portion toward the rack gear 26.

The rack gear 26 meshes with a second floating gear 33 constituting a floating gear mechanism 90. here,
The floating gear mechanism 90 according to the present embodiment includes a large-diameter gear 31 that meshes with the worm gear 38 of the drive motor 37 and a first floating gear 32 mounted coaxially with the large-diameter gear 31 as shown in FIG. Have. The mounting structure of the large-diameter gear 31 and the first floating gear 32 is the same as that described in the first embodiment.

As shown in FIG. 11, these large-diameter gears 31
The first idler gear 32 and the arm member 92 are supported by a rotating shaft 93. In addition, the first floating gear 3
The second floating gear 33 is supported by the arm member 92 so as to mesh with the second gear 2. As a result, the driving force of the driving motor 37 is reduced by the worm gear 38 and the large-diameter gear 3.
1. The configuration is such that the power is transmitted to the rack gear member 25 via the first floating gear 32 and the second floating gear 33.

The arm member 92 supported by the rotating shaft 93 is provided so as to be swingable about the rotating shaft 93. The arm member 92 is formed in a long plate shape and supports the second floating gear 33 at one end. The other end of the arm member 92 is a tip engagement portion 94 formed to be narrower than other portions. One end of a spring member 95 is attached to a side of the arm member 92 that is closer to the distal end engaging portion 94 and closer to the drive motor 37.

The other end of the spring member 95 is connected to the housing 11.
It is attached to a projecting pin 96 projecting from the bottom. For this reason, the arm member 92 is normally positioned so that the second floating gear 33 meshes with the rack gear 26 by the urging force of the spring member 95.

In order to regulate the swing range of the arm member 92, the rotation range regulating members 97a, 97a,
97b (hereinafter referred to as regulating members 97a and 97b) are formed to protrude upward. When the arm member 92 is in contact with one of the regulating members 97a, the rack gear 26 and the second floating gear 33 are in mesh with each other. When the arm member 92 is in contact with the other regulating member 97b, the rack gear 26 is disengaged from the second floating gear 33, and the second floating gear 33 is engaged with the arc-shaped rack gear member 100 described later. .

A detection switch 98 as a detecting means is provided near the other regulating member 97b. The detection switch 98 is connected to the lower protruding portion 92 a of the arm member 92.
It is provided so as to abut against. Accordingly, the on / off operation of the detection switch 98 is switched, and the driving of the drive motor 37 can be stopped. Here, the downward projecting portion 92a is provided near the distal end engaging portion 94 of the arm member 92 and on the other regulating member 98b side.

An arc-shaped rack gear member 100 as a second transmission guide member is provided on the second floating gear 33 so as to be meshable. The arc-shaped rack gear member 100 is connected to the rotating shaft 9.
3 is attached so as to be rotatable around a rotation shaft 101 which is separate from the rotation shaft 3. However, the arc shape of the rack gear 100a of the arc-shaped rack gear member 100 is
3 are formed so as to form an arc.

The arc-shaped rack gear member 100 has the structure shown in FIG.
As shown in FIG. 11, a tongue member 102 is provided at an end opposite to the rack gear member 25 so as to protrude. The tongue member 102 has a hole 103a for attaching one end of a spring 103. The other end of the spring 103 is attached to a projecting member 104 at the bottom of the housing 11. The protruding member is provided at a position where an urging force can be applied to the arc-shaped rack gear member 100 in a direction in which the arc-shaped rack gear member 100 is separated from the guide portion 81.

The arc-shaped rack gear member 100 is provided so as to be positioned on the guide portion 81 of the rack gear member 25 when the spring 103 rotates in the direction in which the spring 103 extends. When the arc-shaped rack gear member 100 is located on the guide portion 81, the rack gear 26 of the rack gear member 25 and the rack gear 100a of the arc-shaped rack gear member 100 are flush, and the second floating gear 33 can move from the rack gear 26 to the rack gear 100a. And Also,
Even when the arc-shaped rack gear member 100 is pulled by the biasing force from the spring 103, the second floating gear 33
Slidable on the rack gear member 100
Must be rotatable. For this reason, the spring 1
A restricting member 105 for restricting the rotation range of the arc-shaped rack gear member 100 is provided in the vicinity of the position where 03 exists so as to protrude upward from the bottom of the housing 11.

The distal end engaging portion 94 of the arm member 92 is located in the notch groove 111 of the swing member 110. The swing member 110 is provided so as to be substantially perpendicular to the bottom of the housing 11 as shown in FIG. The swing member 110
Is rotatably supported on, for example, a side portion of the housing 11 (not shown). A notch groove 111 is formed below the rocking member 110. The notch groove 111 is
The swinging member 110 is formed by a predetermined length upward from a lower end portion. And this notch groove 11
The first engaging portion 94 is located at 1. Thus, the rotation of the arm member 92 can be transmitted to the swing member 110.

An engaging pin 112 is formed on the swing member 110 so as to project therefrom. The engagement pin 112 is to abut on the bent portion 53 of the rotating member 50 so as to be orthogonal to the rotating member 50 to rotate the rotating member 50. In addition, only the bent portion 53 is formed on the rotating member 50 of the present embodiment, and the engaging portion 54 is not provided. In this case, the bent portion 53 that comes into contact with the engagement pin 111 serves as the engagement portion 54.

However, the engagement portion 5
4 may be provided so that the engaging portion 54 comes into contact with the swinging member 110. Further, the number of the bent portions 53 is not limited to one, and two bent portions 53 may be formed at a predetermined angle.

Further, the disc reproducing apparatus 8 of the present embodiment
0 is provided with a disk diameter identification mechanism 120 different from that of the first embodiment. This disk diameter identification mechanism 1
As shown in FIG. 15, reference numeral 20 denotes a longitudinal center portion of the disk insertion slot 12, and a gear 121 is rotatably supported inside the housing 11. A pair of symmetrical slide members 122 as objects to be identified are provided in a direction parallel to the longitudinal direction of the disk insertion slot 12 with the gear 121 interposed therebetween. The slide member 122 is a long member having a stepped portion 123 bent stepwise, and a rack gear 124 is formed at a portion where the gear 121 abuts.

Also, on one end side of the slide member 122,
One end of the spring 125 is attached. This spring 125
The other end is attached to the receiving portion 126 inside the housing 11. For this reason, the slide member 122 is provided so as to be pulled back toward the receiving portion by the urging force of the spring 125. A long groove 127 is formed at one end of the slide member 122. A projecting pin 128 extending downward from the upper portion of the housing 11 is fitted into the long groove 127. Therefore, the slide member 122 is slidable in a range where the long groove 127 is formed.

The step 1 on the other end of the slide member 122
A guide shaft 129 protrudes upward from 23. The guide shaft 129 is fitted into a guide slot 130 formed in the upper part of the housing 11 so as to be parallel to the disc insertion slot 12. Thus, the long groove 127
And the projecting pin 128, and the guide slot 130 and the guide shaft 1
29, the sliding direction of the slide member 122 is determined.

A pivoting door 131 is provided below the step portion 123 below the housing 11. The revolving door 131 is
It is provided rotatable around a guide shaft 129 projecting downward from the upper part of the housing 11. Further, a rotation regulating pin 133 is provided so as to be able to contact the rotation door 131. At the same time, a spring 134 for applying a biasing force to the rotating door 131 is provided. One end of the spring 134 is attached to the tapered portion (or another portion) of the slide member 122, and the other end is attached to the rotating door 131. Thereby, the revolving door 1
31 and the slide member 122 are provided so as to exert an urging force on each other.

The rotation restricting pin 133 is provided with a spring 134.
This is for restricting the turning range of the turning door 131 by the urging force. The rotation restricting pin 133 causes the rotation door 131 to move the disc insertion slot 1 by the urging force of the spring 134.
2 and keeps its posture.

Also, on the tip side of the slide member 122,
A first identification switch 65 and a second identification switch 66 are provided. These first and second identification switches 6
The reference numerals 5 and 66 are attached at positions where the other end of the slide member 122 passes when the rotating door 131 and the slide member 122 move toward the edge of the disk insertion slot 12. Then, by passing through the other end of the slide member 122,
The first and second identification switches 65 and 66 can be switched.

The interval between the opposing rotating doors 131 is set slightly smaller than the diameter of the small-diameter disk 70. When the small-diameter disk 70 is inserted, the slide member 122 is moved to the first identification position. It passes through only the switch 65.

The operation of the disk reproducing apparatus 80 having the above configuration will be described below.

First, when the small-diameter disk 70 is inserted from the disk insertion slot 12, the rotary door 131 slightly rotates. Further, with this rotation, the slide member 122 and the rotation door 131 slide, and pass only the first identification switch 65. However, the second identification switch 66 does not pass. As a result, the control means can be inserted into the disc 7
0 is recognized as the small-diameter disk 70. After that, the small-diameter disk 70 is fed into the rear side of the housing 11 as it is by a loading mechanism (not shown).

Before the small-diameter disk 70 is loaded to the inner side of the housing 11, the drive motor 37 operates to rotate the positioning pin 51 attached to the rotating member 50. Thereby, the positioning pin 51 is provided at a position orthogonal to the insertion direction of the disk 70, and the details will be described below.

As shown in FIG. 12, when the drive motor 37 is driven, the large-diameter gear 31 is driven to rotate in the direction of arrow A. Then, the driving force is transmitted from the large-diameter gear 31 to the first floating gear 32, and the first floating gear 32
Is rotated in the direction of. Then, the first floating gear 32
The driving force is transmitted to the second floating gear 33 meshing with the gear. The second floating gear 33 rotates in the direction of arrow B, and the rack gear member 25 is slid via the second floating gear 33. By the sliding drive of the rack gear member 25, the support plate 17 and the optical pickup 16 attached to the rack gear member 25
The slide drive is performed toward the center of the 0 information recording surface.

The situation where the rack gear member 25 slides in the direction of arrow C is the same as that described in the first embodiment. That is, the end of the rack gear member 25 eventually collides with the stopper member 28, and the slide drive of the rack gear member 25 is stopped thereafter.

Then, the on / off operation of the detection switch 29 provided near the stopper member 28 is switched with the collision. However, small diameter disk 7
When 0 is inserted, depending on the electric signal emitted from the detection switch 29, the control means
7 is controlled so as not to be stopped.

When the rack member collides with the stopper member 28, the second floating gear 33 moves in the direction of arrow D along the rack gear 26 by the driving force of the driving motor 37, as shown in FIG. Then, the second floating gear 3
With the movement of 3, the distal end engaging portion 94 of the arm member 92 rotates in the direction of the arrow E while resisting the urging force of the spring member 95.

When the arm member 92 rotates in the direction of arrow E, the rotation is transmitted to the swinging member 110 via the distal end engaging portion 94 of the arm member 92. As a result, the swing member 110 also rotates in the direction shown by the arrow F. When the swing member 110 rotates, the swing member 11
The 0 engaging pin 112 pushes the bent portion 53 while rotating.
Thereby, the turning member 50 turns. In addition, as shown in FIG.
The positioning pin 51 rotates in the direction of arrow G,
The loaded small diameter disk 70 is received, and the small diameter disk 70 is positioned. As described above, the positioning of the small-diameter disk 70 is realized.

When the arm member 92 is sufficiently rotated in the direction of arrow E to switch the detection switch 98, the detection switch 98 sends an electric signal to the control means. Thereby, the control means controls the drive motor 37 to stop.

Subsequently, when the large-diameter disk 70 is inserted from the disk insertion slot 12, the rotation of the rotation door 131 increases. As a result, the sliding amount of the slide member 122 increases, and passes through not only the first identification switch 65 but also the second identification switch 66. Thereby, the control unit recognizes that the disk 70 to be inserted is the large-diameter disk 70. The subsequent operation is the same as that described in the first embodiment.

In the disk reproducing apparatus 80 having the above-described configuration, similarly to the case of the disk reproducing apparatus 10 described in the first embodiment, when the advance of the rack gear member 25 is stopped by the application of the driving force. However, the second floating gear 33 moves onto the arcuate rack gear member 100, and the arm member 92 is rotated by meshing with the second floating gear 33. The rotation of the arm member 92 causes the rotation member 50 to rotate via the swing member 110. Thereby, the positioning pin 51 is also rotated. In this way,
If the positioning pin 51 rotates, it is possible to favorably switch the positioning state of the small-diameter disk 70 and the positioning release state.

The arc-shaped rack gear member 100 is provided separately from the arm member 92, and the second floating gear 33 is supported on the arm member 92. Further, the rotation of the arm member 92 causes the second floating gear 33
Can move from the rack gear member 25 to the arc-shaped rack gear member 100. By doing so, it becomes possible for the second floating gear 33 to move onto the arc-shaped rack gear member 100 and to rotate the arm member 92. This makes it possible to switch between the positioning state of the positioning pin 51 and the positioning release state by rotating the arm member 92.

Further, a swing member 110 is provided, and the rotation of the arm member 92 is changed in direction and transmitted through the swing member 110, so that the swing can be accurately performed in accordance with the shape of the swing member 50. It becomes possible to transmit the driving force in the moving direction.

Further, since the regulating members 97a and 97b are provided, it is possible to prevent the arm member 92 from rotating excessively. Further, the regulating members 97a, 97
By providing the detection switch 98 near b, the driving of the drive motor 37 can be controlled.

The disc diameter discrimination mechanism 120 switches between the first discrimination switch 65 and the second discrimination switch 66 by sliding the slide member 122. Even with such a configuration, the disc diameter can be identified well.

As described above, the first embodiment of the present invention and the second embodiment
However, the present invention can be variously modified in addition to the above. Hereinafter, this will be described.

In the first embodiment, the notch 45 is provided at the end of the arm member 40, and the notch 4
Although the engaging portion 54 is engaged with the fifth member 5, the other end of the arm member 40 may have the same shape as the arm member 92 of the second embodiment, and a swing member 110 may be further provided. With such a configuration, the bending portion 53 is attached to the rotating member 50.
It is not necessary to provide only the engagement portion 54.

Further, the transmission of the driving force between the first floating gear 32 and the second floating gear 33 may be performed by a chain, a belt, or a wire instead of meshing the gears. In this case, for example, in a case where the driving force is transmitted by a belt or a wire, the configuration is such that a pulley is appropriately provided.

[0110]

According to the present invention, when the application of the driving force from the driving force transmission means to the first transmission guide member is stopped, the application of the driving force from the driving force transmission means is started. Two transmission guide members are provided, and when the application of the driving force to the second transmission guide member is started, the arm member is rotated following the second transmission guide member. The other end of the arm member is engaged with the engaging portion. For this reason, the transmission of the driving force from the driving means eventually causes the second
A driving force is applied to the transmission guide member of
The arm member is rotated by the application of the driving force to the transmission guide member. As a result, the rotating member having the engaging portion is rotated, and the positioning member provided on the rotating member is also rotated. By the rotation of the positioning member, it is possible to favorably switch between the positioning state of the small-diameter disk and the positioning release state.

[Brief description of the drawings]

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

FIG. 2 is a partial perspective view showing a configuration around a floating mechanism and a rack gear member of the disc reproducing apparatus in FIG. 1;

FIG. 3 is an exploded perspective view showing a state of assembling from a drive motor to an arm member of the disc reproducing apparatus of FIG. 1;

FIG. 4 is a view showing a state in which the arm member is rotated by sliding of the rack gear member in the disk reproducing apparatus of FIG. 1, and is a view showing a state before the pushing portion comes into contact with the contact portion.

FIG. 5 is a view showing a state where the arm member is rotated by sliding of the rack gear member in the disc reproducing apparatus shown in FIG. 1, and showing a state in which the pushing portion is in contact with the contact portion.

FIG. 6 is a diagram showing a state in which the second floating gear and the arc-shaped rack body mesh with each other and the arm member rotates in the disk reproducing apparatus of FIG. 1;

FIG. 7 is a diagram showing a positional relationship between a positioning pin and before and after a disk is placed on a turntable in the disk reproducing apparatus of FIG. 1;

FIGS. 8A and 8B are diagrams showing on / off states of a first identification switch and a second identification switch in the disk reproducing apparatus of FIG. 1, wherein FIG. 8A shows a case where a small-diameter disk is inserted in the center, and FIG. If you move the small-diameter disc to the right,
(C) shows the case where the small-diameter disc is inserted to the left, and (d) shows the case where the large-diameter disc is inserted.

FIG. 9 is a perspective view showing an overall configuration of a disc reproducing apparatus according to a second embodiment of the present invention.

10 is an exploded perspective view showing an assembled state from a drive motor to a swing member of the disk reproducing apparatus of FIG. 9;

11 is a partial perspective view showing a positional relationship among a floating mechanism, a rack gear member, a swinging member, and a rotating member in the disc reproducing apparatus of FIG. 9;

12 is a view showing a state in which the arm member is rotated by the sliding of the rack gear member in the disc reproducing apparatus in FIG. 9, and is a view showing a state before the second floating gear reaches the arc-shaped rack gear member.

13 is a view showing a state in which the arm member rotates in the disc reproducing apparatus of FIG. 9, and showing a state in which the second floating gear has reached the arc-shaped rack gear member and the arm member has started to rotate. .

14 is a view showing a state where the arm member rotates in the disk reproducing apparatus of FIG. 9, and a view showing a state where the positioning pin is rotated by the rotation of the swinging member.

FIG. 15 is a plan view showing a configuration of a disc diameter discriminating mechanism in the disc reproducing apparatus of FIG. 9;

16A and 16B are views showing the arrangement of guide rails inside a housing of a conventional disk reproducing apparatus. FIG. 16A shows that the longitudinal direction of the guide rail is θ <45 with respect to the longitudinal direction of the housing.
(B) shows a state in which the longitudinal direction of the guide rail is θ> 4 with respect to the longitudinal direction of the housing.
It is a figure which shows the state arrange | positioned so that it may become 5 degrees.

[Explanation of symbols]

 10, 80: disk reproducing device 20: guide rail 25: rack gear member (first transmission guide member) 27: pushing part 30: floating mechanism 32: first floating gear (driving force transmission means) 33: second floating Gears (driving force transmitting means) 40, 92 Arm member 43 Contact portion 44 Arc-shaped rack body (second transmission guide member) 50 Rotating member 51 Positioning pin (positioning member) 54 Engaging portion 60 , 120: disk diameter identification mechanism 62: slide pin (identified object) 70: disk 81: guide portion 92: arm member 97a, 97b: rotation regulating member 98: detection switch (detection means) 110: swing member 122 ... Sliding member (identified object)

Claims (11)

[Claims] 1. A disc reproducing apparatus comprising a guide rail capable of guiding sliding of an optical pickup and a positioning member for positioning a small-diameter disk inside a housing, wherein the positioning member is rotatable. The rotating member is provided with an engaging portion at one end of the rotating member, which is separated from the rotating shaft of the rotating member by a predetermined distance, and is slidable along the guide rail. A first transmission guide member provided; driving means for generating a driving force for sliding the first transmission guide member along the guide rail; and a first driving force generated by the driving means. And a driving force transmitting means for transmitting the driving force to the first transmission guiding member, and a driving force transmitting means for transmitting the driving force from the driving force transmitting means to the first transmission guiding member. A second transmission guide member from which the application of the driving force from the driving force transmission means is started when the application of the force is stopped, and a second transmission guide member from the first transmission guide member with respect to the second transmission guide member. When the application of the driving force is started, the second transmission guide member is rotated following the second transmission guide member, and the engagement is formed at the other end opposite to the side on which the second transmission guide member is provided. An arm member that engages with the unit. 2. The driving force transmission means and the first transmission guide member, and the driving force transmission means and the second transmission guide member are engaged with each other to transmit a driving force. 2. The disk reproducing apparatus according to claim 1, wherein: 3. The housing is formed such that a direction orthogonal to a direction in which the disk is inserted is longer, and the guide rail is formed in a direction in which the disk is inserted more than a direction in which the disk is inserted. 3. The disc reproducing apparatus according to claim 1, wherein the disc reproducing apparatus is arranged inside the housing such that a direction perpendicular to the direction becomes longer. 4. The apparatus according to claim 1, wherein the second transmission guide member and the arm member are provided integrally, and the driving force transmission means and the arm member are provided separately. The disk reproducing device according to claim 1, wherein: 5. The first transmission guide member is provided with a pushing portion for pushing the arm member and rotating it by a predetermined amount so that the driving force transmission means engages the second transmission guide member. 5. The disk reproducing apparatus according to claim 4, wherein 6. The second transmission guide member is provided separately from the arm member, and the driving force transmission means and the arm member are provided integrally,
4. The disk reproducing apparatus according to claim 1, wherein the driving force transmitting means can move from the first transmission guide member to the second transmission guide member. apparatus. 7. A swing member capable of changing the direction of the driving force from the arm member and transmitting the driving force to the rotating member is provided. Item 10. The disk reproducing apparatus according to Item 1. 8. The disk reproducing apparatus according to claim 1, further comprising a rotation range restricting member for restricting a rotation range of the arm member. 9. A detecting device for detecting whether or not the arm member has reached a predetermined rotation range,
9. The apparatus according to claim 1, further comprising control means connected to the detecting means and the driving means, and controlling the driving of the driving means when a predetermined rotation range is reached. A disk drive device according to claim 1. 10. The disk reproducing apparatus according to claim 9, further comprising a disk diameter identification mechanism for identifying a diameter of a disk to be inserted, and wherein said control is performed based on the disk diameter identified by said disk diameter identification mechanism. Means for controlling the driving of said driving means. 11. The disc diameter discriminating mechanism includes a first discriminating means, a second discriminating means, and an object to be discriminated identified by the first discriminating means and the second discriminating means when sliding. When the object to be identified passes only through the first identification means with the insertion of the disk, the object is recognized as a small-diameter disk, and the object is provided to the control means. First
A command to continue driving the driving means even when the application of the driving force from the driving force transmission means to the transmission guide member is stopped, and the object to be identified has the first identification means and the second identification means. When the disc has passed both of the discriminating means, the disc is recognized as a large-diameter disc, and the application of the driving force from the driving force transmitting means to the first transmission guide member to the control means has stopped. 11. The disk reproducing apparatus according to claim 10, wherein a command is issued to stop the driving means in such a case.