JP2000137936A - Recording/reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive device with the number of less parts and without fine adjustment also by providing a cylindrical moving means turning with a rotary drive means and having a cum part engaged with an engagement part and a vertical guide means guiding the movement of the engagement part in the nearly same direction as the turning shaft of the moving means. SOLUTION: Engaging pins 1a, 1b, 1c of a traverse chassis 1 are engaged with the cylindrical moving means, which is rotated by a rotation driving means called a main gear, called a cylindrical cum 3 and the vertical guide means called a vertical guide part of a loading base 4. Thus, a disk is loaded by raising or lowering the traverse chassis 1, and by constituting the moving means in a cylindrical shape, a design margin becomes high spatially, and plural cum parts are constituted with the same member. Then, the positions of the cum parts are designed freely, and thus, the positions of three places of engagement pins engaged with the cum parts are provided on the optimum positions without the restriction of the design.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus for recording / reproducing information on / from a disc-shaped record carrier such as an optical disk, a magneto-optical disk, etc., and more particularly to a loading method for an optical disk.

[0002]

2. Description of the Related Art In recent years, as a recording / reproducing apparatus for recording / reproducing information on / from a disc-shaped record carrier such as an optical disk (hereinafter collectively referred to as an optical disk), a loading method called a tray method has been adopted in many cases. As is well known, this is generally called a tray, and when an optical disk is placed on a mounting table that protrudes outside the apparatus, the mounting table slides into the apparatus main body, and when the mounting table is fixed, it is from below. A turntable for rotating an optical disk rises to lock the optical disk.
As disclosed in Japanese Patent Application Laid-Open No. 4 (1999) -264, there has been proposed an apparatus in which a turntable rotates about a horizontal axis as a rotation axis to lock a disk.

[0003] Further, there has been proposed an optical disk in which, when only an optical disk is inserted into a device main body, the optical disk rides on a mounting table, the mounting table is lowered, and the optical disk is held on a turntable (for example, US Pat. No. 4,527,264). ).

[0004]

However, in the above-mentioned conventional configuration, the number of parts is large in both the above-mentioned rotary type and the elevated type, so that it is difficult to manufacture, and the parts cost and the manufacturing cost increase. Had a point. SUMMARY OF THE INVENTION An object of the present invention is to provide an inexpensive recording / reproducing apparatus which solves the above-mentioned conventional problems, has a small number of parts, does not require fine adjustment, and is easy to manufacture.

[0005]

In order to achieve this object, a recording / reproducing apparatus according to the present invention comprises: an engaging portion provided in a recording / reproducing portion which projects in a direction substantially parallel to a disk surface of a disk-shaped record carrier; Rotation driving means for rotationally driving, cylindrical moving means having a cam portion which is rotated by the rotation driving means and engages with the engaging portion, and movement of the engaging portion in substantially the same direction as the rotation axis of the moving means. And a vertical guide means for guiding.

With this configuration, since the moving means is formed in a cylindrical shape, a plurality of cam portions can be provided, and a plurality of engagement portions can be simultaneously guided simultaneously, so that the degree of design freedom is high and the number of parts is high. An inexpensive recording / reproducing apparatus which is very easy to manufacture can be obtained.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention according to claim 1 of the present invention provides a mounting means for mounting a disk-shaped record carrier capable of recording and reproducing information, and a recording and reproducing information by holding the disk-shaped record carrier. A recording / reproducing apparatus having a recording / reproducing section, wherein an engaging section provided in the recording / reproducing section protruding in a direction substantially parallel to the disc surface of the disc-shaped record carrier, and a rotational drive unit for rotationally driving,
A cylindrical moving means having a cam portion which is rotated by the rotation driving means and engages with the engaging portion; and a vertical guide means for guiding the movement of the engaging portion in substantially the same direction as the rotation axis of the moving means. Since the moving means is formed in a cylindrical shape, a plurality of cam portions can be provided, and the plurality of engaging portions are simultaneously synchronized and guided.

According to a second aspect of the present invention, a disc-shaped record carrier on which information can be recorded / reproduced is placed, and the disc-shaped record carrier is placed between a position where the disc-shaped record carrier can be ejected and a position where recording / reproduction can be performed. A recording / reproducing apparatus comprising: a mounting means that moves in parallel with a mounting surface; and a recording / reproducing unit that records / reproduces information by holding the disc-shaped record carrier at a position where the disc-shaped record carrier is recorded / reproduced. Rotating means for rotating the main gear, a moving means having an arcuate gear engaged with the main gear, and rotating by this; a switching guide pin provided on the moving means; And a switching guide provided on the mounting means and capable of engaging with and guiding the switching guide pin. When the mounting means moves between the discharge position and the recording / reproducing position, the rack is mounted on the main gear. Only the part meshes with the main gear and only the arc gear The meshing state is switched by the engagement of the switching guide pin and the switching guide portion, and the main gear that is only rotationally driven has a rack portion for moving the mounting means and a rotating portion. And the switching guide pin of the moving means engages with the switching guide pin of the mounting means.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 is a perspective view of a schematic configuration of a recording / reproducing apparatus of the present invention, and the schematic configuration of the present embodiment will be described with reference to FIG. The detailed description of each component will be described using each component perspective view described later.

FIG. 2A is a perspective view of the structure of the traverse unit, and FIG. 2B is a perspective view of the structure of the traverse unit. 1 and 2, reference numeral 1 denotes a traverse chassis made of synthetic resin, which is an optical disk (not shown).
Traverse having a turntable 2a for rotating the optical disc, a spindle motor 2b for rotating the turntable 2a, a pickup 2c for irradiating the optical disc with a light beam, and a traverse mechanism 2d for moving the pickup 2c in the radial direction of the optical disc (the direction of arrow R in the figure). The mechanism 2 is fixed via a rubber damper 2e (not shown in FIG. 1). The traverse chassis 1 has an arc portion 1d which is partially arcuate so that its outer shape is in contact with a circle, and has three engaging portions so as to be radially divided into approximately three in a direction substantially parallel to the rotation surface of the optical disk. The mating pins 1a, 1b, 1c protrude. Reference numeral 1e denotes a vertical stopper, which is a step provided on the side of the traverse chassis 1, and has a closed groove formed on the front side on which the optical disk is placed as shown in FIG. 1f is a lateral stopper, which is formed so as to protrude to the above-mentioned front side.

FIG. 3 is a structural perspective view of the cylindrical cam. In FIGS. 1 and 3, reference numeral 3 denotes a cylindrical cam made of synthetic resin, which has an annular portion 3a at an upper portion and a cylindrical portion 3b at a lower portion. The annular portion 3a has an annular engaging portion 3c having a partially large diameter in the circumferential direction, and an arcuate gear 3d is provided in a part. Further, three continuous cam portions 3e are provided from the annular locking portion 3c to the cylindrical portion 3b. The three cam portions 3e have the same shape, and are close to the annular portion 3a in the clockwise direction and are separated in the counterclockwise direction as shown in the drawing (in other words, if the cylindrical cam is rotated counterclockwise, The pin that comes together is closer to the ring, and conversely, if it rotates clockwise, the pin separates from the ring.)
It has an annular part and a parallel part parallel to it before and after it. Reference numeral 3f denotes a switching guide pin protruding above the annular portion 3a, and is configured to be substantially on the center line of the cylindrical cam 3 when engaging with a switching guide groove (described later) of the tray as described later. 3
g is a detent pin protruding above the annular portion 3a. The circumferential positions of the switching guide pin 3f and the detent pin 3g will be described later. Reference numeral 3i denotes a manual rotation lever which projects substantially horizontally in the depth direction so as not to interfere with the sliding movement of the tray, as described later, and is made so that the cylindrical cam 3 can be rotated manually.

FIG. 4 is a configuration perspective view of the loading base. 1 and 4, reference numeral 4 denotes a loading base made of a synthetic resin, in which a cylindrical portion 3 of a cylindrical cam 3 is placed.
There is an elevating part 4a into which b is inserted, and there is an annular step 4b around the upper part of the elevating part 4a, with which the annular part 3a abuts. The elevating portion 4a is provided with a plurality of arc-shaped walls 4c (two of them are shown in FIG. 4) for partially guiding the insertion and rotation of the cylindrical cam 3 in the circumferential direction.
There are provided three vertical guide portions 4d so as to fit in the engagement pins 1a, 1b, and 1c and move in the vertical direction. An annular claw 4e is provided on the annular step portion 4b of the vertical guide portion 4d, and the annular claw 4e is engaged with the annular locking portion so that the inserted annular portion 3 does not come off as described later. 3c.
Reference numeral 4f denotes a detent claw provided on the annular step portion 4b. The annular portion 3a prevents the cylindrical cam from rotating more counterclockwise than necessary.
And has elasticity so that it can be turned counterclockwise by removing the contact during the manufacturing process or at the time of maintenance. Reference numeral 4g denotes a vertical stopper claw having elasticity of a synthetic resin, which is provided so as to relate to the vertical stopper 1f of the traverse chassis 1, and stops the traverse chassis 1 from moving upward more than necessary.

Reference numerals 4h and 4i denote tray guides for guiding the movement of a tray (described later) on which an optical disk is placed, and regulates the horizontal and vertical tray slide positions. Reference numeral 4j denotes a tray retaining claw utilizing the elasticity of the synthetic resin. Tray guide part 4 about tray
The h, 4i and the retaining claw 4j will be described later in detail.

In FIG. 4, reference numeral 5 denotes a gear, which rotates about a shaft 4k of the loading base 4 as a center axis. The main gear 5a meshes with the arc gear 3d at the upper part, and the main gear part at the lower part. 5a and a sub-gear portion 5b having a larger diameter and a larger number of teeth. Reference numeral 6 denotes a rotation transmission mechanism that transmits the rotation of the motor 7 to the sub-gear portion 5b while strengthening the torque.

FIG. 5 is a structural view of the tray, FIG. 5A is a plan view, and FIG. 5B is a front view. In FIG. 5, reference numeral 8 denotes a tray. As is well known, a mounting portion 8a on which a normal disk (12 cm diameter) can be mounted and a small mounting portion 8b on which a small-diameter disk (8 cm diameter) can be mounted have a step. An opening 8c is provided, which is opened in the longitudinal direction of the tray 8 from the center of the mounting portion 8a and the small mounting portion 8b. 8e is a side step provided on the longitudinal side of the tray 8, and 8d
Is a groove provided in the back of the side step portion 8e, which is open to the depth side in the tray longitudinal direction (upward in FIG. 8) and closed to the near side in the tray longitudinal direction (downward in FIG. 8). It is. Reference numeral 8f denotes a step protruding from the side surface of the tray 8, and has a slope on the back side. The groove 8d and the side step 8e are guided by the tray guides 4i and 4h of the loading base 4, respectively, so that the tray 8 can slide in the longitudinal direction. The step portion 8f abuts on the retaining claw 4j of the loading base 4 and specifically prevents the tray 8 from being unnecessarily moved to the front side when the tray 8 is discharged.

Reference numeral 8g denotes a rack portion, which is provided on the reverse surface of the tray 8 opposite to the mounting portion so as to mesh with the main gear portion 5a of the gear 5 in the longitudinal direction of the tray. 8
Reference numeral h denotes a switching guide groove, which is also provided on the back surface, and is configured to engage with the switching guide pin 3f of the cylindrical cam 3. Reference numeral 8l denotes a manual lever exposure section, which is provided so that the manual rotation lever 3i is exposed and the cylindrical cam can be rotated by manual operation even when the tray 8 is completely slid in the depth direction.

The assembling process of the recording / reproducing apparatus according to the first embodiment configured as described above will be described with reference to FIGS. First, the motor 7 and the rotation transmission mechanism 6 are mounted on the loading base 4 in which the gear 5 is rotatably inserted into the shaft 4k, and the gear is rotated in both forward and reverse directions by rotation of the motor. Next, the cylindrical cam 3 is rotatably inserted into the lifting section 4a of the loading base 4. At this time, as shown in FIG. 6, the portion of the annular locking portion 3c of the annular portion 3a immediately adjacent to the counterclockwise direction is connected to the annular claw 4 of the loading base 4.
The cylindrical cam 3 is inserted in accordance with the position e and the cylindrical cam 3 is rotated counterclockwise, so that the cylindrical cam 3 is rotatably locked.
In addition, the cylindrical cam 3 cannot rotate more counterclockwise than necessary due to the contact between the detent 4f and the annular locking portion 3c. When the cylindrical cam 3 is rotated counterclockwise, the arc gear 3d meshes with the main gear 5a of the gear 5.

Next, when the rotation stopper is released and the cylindrical cam 3 is rotated slightly counterclockwise, the cam portion 3 of the cylindrical portion 3b is rotated.
The upper entrance of e (opened at the annular portion 3a) matches the vertical guide of the loading base 4. In this state, FIG.
Attach the traverse unit shown in. The engaging pins 1a and 1 of the traverse chassis 1 are
The traverse chassis 1 is inserted by pressing the traverse chassis 1 from above with the combination of b and 1c. At this time, the vertical stop claw 4g having elasticity
Is held by the vertical stopper 1e, and the traverse unit cannot protrude upward. In addition, vertical stop claw 4g
Presses the vertical stopper 1e of the traverse chassis 1 elastically. As a result, the rotational imbalance during rotation of the optical disk (occurs when the eccentrically loaded disk is rotated)
The recording and reproduction can be performed stably while suppressing the rattling.

After the traverse chassis is mounted, the engagement pins 1a, 1b, and 1c move in the cam portion 3e and the cam portion 3e is closed in the clockwise direction. Cannot rotate more clockwise than necessary, the annular pawl 4e always slidably locks the annular locking portion 3c, and the cylindrical cam 3 does not come out of the elevating portion 4a. Thereby, the engagement pin 1 is formed by the cam portion 3e and the vertical guide portion 4d.
Since the positions of a, 1b, and 1c are regulated, the cylindrical cam 3
It moves up and down by the rotation of. In this case, when the cylindrical cam is fully rotated clockwise, the main gear 5a and the arc gear 3
The main gear 5a and the arcuate gear 3d mesh with each other, and the engaging pins 1a, 1b, and 1c are positioned below the cam 3e. The traverse unit starts to move up from the parallel part to the inclined part, and starts to rise. The start of meshing with the arc gear 3d by the main gear portion 5a, which is the rotation drive source, will be described in detail in the description of the sliding movement of the tray 8.

Next, the assembly of the tray will be described. When the cylindrical cam 3 is fully rotated clockwise (ie, the traverse unit is fully lowered), the tray guides 4h and 4i are connected to the tray 8 with respect to the loading base.
The groove 8d and the side step 8e are slid so as to engage with each other. At this time, the resilient retaining claw 4j does not lock the step 8f in the tray 8 inserting direction, but conversely, the retaining claw 4j locks the step 8f in the tray discharging direction. In addition, the tray is prevented from protruding more than necessary.

By inserting the tray 8, the rack 8
g meshes with the main gear portion 5a. This main gear part 8
The meshing switching between the gears and the rack portion 8g and the arc gear 3d will be described with reference to the drawings. FIGS. 7 to 11 are schematic diagrams for explaining the correlation between the meshing switching and the switching guide groove / pin. FIG. 7 shows a discharge position state when the tray is fully opened. That is, in this state, the rotation of the main gear 8a allows the tray 8 to slide from the discharge position where the disc can be loaded and discharged to the vicinity of the recording and reproduction position where the disc can be recorded and reproduced, and the arc gear 3d meshes with the main gear 5a. Therefore, the cylindrical cam does not rotate.

However, when the tray 8 approaches the recording / reproducing position, as shown in FIG.
h, the cylindrical cam 3 is rotated counterclockwise, and the arc gear 3d and the rack 8g are meshed with the main cam 5a (FIG. 9). The switching guide pin 3f moves while being guided by the switching guide groove while meshing with both.
As shown in FIG. 10, the tray 8 moves to a completely closed position (that is, a recording / reproducing position), and the engagement between the main gear portion 5a and the rack portion is released. Since the main gear portion 5a meshes only with the arc gear, the cylindrical cam starts rotating counterclockwise. The rotation continues, and the traverse chassis 1 is raised by the cam portion 3e as described above, and the loading is completed.

FIG. 12 is a schematic front view of the recording / reproducing apparatus having the trays constructed as described above (FIG. 12A shows a state where the traverse unit is lowered, and FIG. 12B shows a state where the traverse unit is raised). The clamper 9 is configured together with its support member 9a so that the disc 100 placed on the mounting portion 8a of the tray 8 can be chucked on the upper portion of the turntable 2a.

The operation of the recording / reproducing apparatus according to the present embodiment thus configured will be described with reference to the drawings. First,
A recording / reproducing state (even if no disk is loaded), that is, a state in which the traverse unit is raised (FIG. 12B, however, in this figure, the disk 100 is loaded. When the user instructs the tray to be opened by operating means (not shown) in a state where the disc 100 is not depicted in the drawing and the turntable 2a is in contact with the clamper 9), the operation is started. A rotation command is issued from the means to the motor 7 via a control means (not shown), and the main gear 5a starts rotating clockwise. Accordingly, as described above, the cylindrical gear is rotated only by the arcuate gear meshing with the main gear portion 5a, and the traverse unit is lowered from the state of FIG. 11 to the state of FIG. 9 through the state of FIG. FIG.
, The switching guide groove 8h and the pin 3f are still engaged,
After the arc gear 3d and the rack portion 8g mesh with the main gear portion 5a, the switching guide groove 8h and the pin 3f are disengaged, and only the rack portion 8g meshes with the main gear portion 5a (FIG. 8). 8g of rack part from this state
Only the rotational force is transmitted from the main gear 5a, the tray 8 is carried out, and the record carrier can be discharged. During this series of operations, the main gear portion is only rotating in the anti-rotation direction, so that the motor 7 does not need to reverse halfway.

Since it is not necessary to reverse the motor halfway, the control means (not shown) of the motor 8 determines that the tray 8 is completely unloaded (discharged state) and that the cylindrical cam is completely counterclockwise. (A recording / reproducing state)
It is only necessary to be able to detect three states of the state (transition state) between them, and a combination of binary detection by optical detection means (reflective or shielded optical sensor or the like) and magnetic detection means (Hall element or the like) may be used. Or a mechanical bounce switch.

In this embodiment, the latter three states are detected by using the latter mechanical rebound switch. FIG. 13 shows a schematic diagram of the position detection. That is, a rebound switch 41 is provided on the loading base 4 and its lever 4m is projected upward (see FIG. 4). The state in which the cylindrical cam has completely rotated counterclockwise (recording / reproducing state)
In FIG. 13, the rotation position lever 3h projected horizontally from the annular portion 3a of the cylindrical cam 3 comes into contact with the lever 4m, presses it down, and falls down in the depth direction (right direction in FIG. 13A). next,
The clockwise rotation of the cylindrical cam 3 causes the rotation position lever 3h to be separated from the lever 4m, and the rebound switch 41 automatically resets the lever 4m.
(B). This corresponds to a transition state. Finally, when the tray slides and is completely carried out, the movement position convex portion 8i provided on the back surface of the tray comes into contact with the lever 4m, presses it, and tilts it toward the front (to the left in FIG. 13). Thus, the discharge state is detected, and the rotation of the motor is stopped.

When the tray 8 is fully opened and in the discharge state as described above, the user places the optical disk on the mounting portion 8a and instructs the operation portion to close the tray 8, and the motor 7 operates in the reverse manner. It rotates clockwise, which is the direction of rotation, and performs the operations shown in FIGS. As a result, the traverse unit including the turntable 2a rises from the state where the optical disk 100 as shown in FIG. 12A is placed on the mounting portion 8a of the tray 8, and locks the inner diameter portion of the optical disk 100 together with the clamper 9. I do.

Similarly, FIGS. 13 (c) to 13 (b)
As shown in FIG. 9A, the completion of loading is detected, and the rotation of the motor 7 is stopped. As a result, the optical disc 100 is rotatably held by the turntable 2a while being separated from the mounting portion 8a, and is held by the optical pickup 2c.
Information can be recorded and reproduced. As described above, according to the present embodiment, the traverse chassis is provided with a cylindrical moving means called a cylindrical cam and a vertical guiding means called a vertical guiding part of a loading base, which are rotated by a rotary driving means driven to rotate, a main gear. Since the engaging pin is engaged, the disc can be loaded by raising or lowering the traverse chassis. In addition, since the moving means is formed in a cylindrical shape, there is a high design margin in terms of space, and a plurality of cam portions can be made the same. It can be configured as a member. Thus, there is no need to worry about the synchronous movement of the plurality of cam portions.
In particular, the position of the cam portion can be freely designed due to the high degree of design freedom, and the three positions of the engaging pins engaging with the cam portion are not restricted by the design at all. It can be provided at an optimum position in consideration of absorptivity, margin for impact, and the like.

Also, parts for detecting the rotational position and countermeasures against impact can be eliminated by the high design margin of the cylindrical moving means. Therefore, it is possible to propose a thin recording / reproducing apparatus that can be manufactured very easily with a very small number of parts. In addition, by simply switching the direction of rotation of one of the main gears, tray loading such as opening and closing the tray,
It is possible to propose a recording / reproducing apparatus which can load the above-mentioned disc, and can be manufactured very easily with a very small number of parts. In particular, only one main gear is meshed with the tray rack and the cylindrical cam arc gear.
Since the reliability of the meshing is high and there is a state of meshing at the same time, there is an excellent effect that the synchronicity of the meshing is not lost.

In the first embodiment, when the main gear 5a is engaged only with the rack of the tray and the tray 8 is slightly opened, the cylindrical cam 3 is engaged with the main gear for some reason. Then, the traverse chassis rises, and a rotation preventing mechanism for the cylindrical cam is required to avoid this. This is a ring claw 3g provided on the ring portion 3a,
This is a detent wall 8j provided on the back surface of the tray 8. That is, when the tray 8 is not closed, the annular pawl 3g is arranged on the left side of the detent wall 8j so that the annular pawl 3g is rotated further rightward, that is, the cylindrical cam is turned counterclockwise. I can't move. When the arc gear 3d and the rack 8g mesh with the main gear 5a and the switching guide pins and grooves are engaged and the tray is completely closed, there is no detent wall 8j. The pawl 3g can move, and the cylindrical cam can rotate counterclockwise.

In the first embodiment, when the traverse chassis 1 is lifted and the turntable 2a locks the optical disk, the tray 8 must not be slid by any impact or the like. Must. this is,
Although it is configured not to move even by the above-described switching guide pins and grooves, the fixing is strengthened also by the lateral stopper 1f of the traverse chassis 1 and the stopper claw 8k provided on the back surface of the tray 8. This is after tray 8 is closed
This is realized by raising the traverse chassis 1 and locking the stopper claw 8k to the lateral stopper 1f.

Further, regarding the relationship between the pin and the groove for the switching guide, as shown in FIG.
It has a degree angle. This is because when the tray 8 is loaded or unloaded,
1 and the switching guide pin 3f, the sliding drive of the tray 8 to the rotational drive of the cylindrical cam 3 (during loading of the tray 8), or the rotational drive of the cylindrical cam 3 to the slide drive of the tray (tray 8). At the time of unloading)
In this case, the angle is set to about 45 degrees. Switching guide groove 8
The arc-shaped guide portion 8m that is continuous with the engagement start portion 8l of h corresponds to the rotation trajectory of the switching guide pin 3f because the slide drive of the tray 8 has been completed.

Similarly, since the rack portion 8g of the tray 8 and the arcuate gear 3d of the cylindrical cam 3 must mesh with the main gear portion 5a, not only their pitches but also their rotational phases can be smoothly adjusted. It is possible to switch the proper meshing. Particularly, as described above, since the angle formed by the engagement start portion 81 with the tray sliding direction is 45 degrees, the main gear portion 5a includes the rack portion 8g and the arcuate gear portion 3d.
If the angle of the tangent line meshing with each other, in other words, the angle formed by the moving direction of the rack portion 8g and the straight line between the rotation center of the circular cam 3 and the rotation center of the main gear portion 5a is approximately 45 degrees, it is very smooth. Can be switched.

Also, when the cylindrical cam 3 is fully rotated in the counterclockwise direction and the traverse unit is completely lifted, the small projection 3 is attached to the annular locking portion 3c so that the cylindrical cam 3 does not rattle.
j, so that the annular locking portion 3c becomes the annular step portion 4b.
There is no play between the ring claw 4e. Small protrusion 3j
Needless to say, the shape is such that it does not resist rotation (a gentle mountain shape or the like).

(Embodiment 2) Next, the configuration operation of a recording / reproducing apparatus according to Embodiment 2 of the present invention will be described with reference to the drawings. Note that the present embodiment relates to a so-called tilt operation in which a pickup for irradiating a light beam is tilted in order to improve an error in information recording / reproduction due to a warp or the like of an optical disk. Therefore, the tray is fully closed, that is, at the recording / reproducing position, and does not move, so that the relationship between the tray and the main gear is the same as that described in the first embodiment.

FIG. 14A is a perspective view showing the configuration of a traverse unit of the recording / reproducing apparatus according to the second embodiment of the present invention, and FIG. In FIG.
Reference numeral 11 denotes a traverse chassis, which can be formed of synthetic resin in the same manner as described in the first embodiment.
b and c are similarly configured. Reference numeral 11f denotes a groove which is formed at a position substantially symmetrical with respect to the engagement pin 11a.

A tilt chassis 12f holds a pickup 12c and a traverse mechanism 12d for moving the pickup 12c. The tilt chassis 12f includes a turntable 12a.
It is rotatably supported by a rotating shaft 12g orthogonal to the radial direction R with respect to a spindle chassis 12i that holds a spindle motor 12b that rotationally drives the spindle motor 12b. The traverse mechanism 12 is composed of the spindle chassis 12i and the tilt chassis 12f. The traverse mechanism 12 is held by fixing a spindle chassis 12i to the traverse chassis 11 via a damper 12e. Reference numeral 12h denotes a tilt engagement pin, which is provided on the tilt chassis 12f at a position opposite to the rotation shaft 12g with the pickup interposed therebetween, and protrudes from the groove 11f of the traverse chassis 11 to the outside of the traverse chassis 11. The difference from the first embodiment is that the traverse mechanism is
Turntable 12 for holding and rotating an optical disk
a, spindle chassis 12 of spindle motor 12b
i, a pickup 12c for irradiating a light beam, and a tilt chassis 12 of a traverse mechanism 12d for moving the pickup 12c.
f, the spindle chassis 12i is fixed to the traverse chassis 11, and the tilt chassis 12f is configured to be rotatable.

FIG. 15 is a development explanatory view of a cylindrical cam.
The cam portion is viewed from the inside of the cylindrical cam 13. In FIG. 15, reference numeral 13e denotes a cam portion, only one of which is shown in the figure, but there are two other members, a total of three, into which the engaging pins 11a, b, and c of the traverse chassis 11 are slidably inserted. This is not different from that shown in the first embodiment. 13i is a tilt cam portion, which is located at one position on the cylindrical cam 13,
It is provided at a position corresponding to the tilt engagement pin 12h. The tilt cam portion 13i has a long lower parallel portion (portion DL in the drawing), and a slant portion that is upward upward continuously from the portion (portion T in the drawing). The difference between the second embodiment and the first embodiment is that the upper parallel portion of the cam portion 13e is longer by T as shown in the drawing (the portion of DL up to the wavy line in the drawing is the same as that shown in the first embodiment). ), And the tilt cam portion 13i into which the tilt engagement pin 12h is slidably inserted is provided.

The operation of the recording / reproducing apparatus of the second embodiment configured as described above will be described below. As described above, from the state where the tray is fully opened to the discharge position, the tray is fully closed to the recording / reproducing position and the traverse chassis 11
Embodiment 1 is the same as in Embodiment 1 up to the state in which the traverse unit (in other words, the traverse unit) is completely lifted, and therefore the description thereof is omitted.

In FIG. 15, when the traverse unit has been completely lifted, the engagement pins 11 in the cam portion 13e are set.
c and the tilt engagement pin 1 in the tilt engagement cam portion 13i
2h is at the right end of the DL portion as shown. When the cylindrical cam 13 rotates counterclockwise from this state, the engagement pin 11c and the tilt engagement pin 12h slide relatively to the right in FIG. 15 and enter the area T shown in FIG. Engagement pin 1
1c slides on the upper parallel portion as it is, so that its height does not change and the position of the traverse unit remains fixed, whereas the tilt engagement pin 12h slides on the inclined portion of the tilt engagement cam 13i. Move. Therefore, the tilt chassis 12f rotatably held by the spindle chassis 12i on the traverse chassis 11 is rotated by the tilt engagement pin 12h engaged with the tilt engagement cam 13i. As a result, the pickup on the tilt chassis can be tilted in accordance with the warp of the disc, and the light beam can be irradiated at right angles to the disc surface along the tilt.

As described above, according to this embodiment, rotation of one main gear can realize not only tray loading by sliding movement of the tray, disk loading by elevating the traverse mechanism, but also pick tilt correction operation. Since the rotation angle of the cylindrical cam is larger in the present embodiment than in the first embodiment, the switching guide groove of the tray must be longer in accordance with the rotation locus of the switching guide pin of the cylindrical cam. Needless to say.

Further, the tilt engagement cam portion 13i is provided as shown in FIG.
As shown in the figure, a lower parallel portion and an inclined portion continuously extending upward are provided at the lower portion of the cylindrical cam 13, but this is for bringing the pickup closer from the most distant position with respect to the optical disk. It is intended to avoid contact with the pickup beforehand. If a treatment for avoiding contact is separately performed, the present invention is not limited to this, and a tilt engagement cam having an inclined portion extending from the upper portion to the lower portion of the cylindrical cam 13 continuously with the parallel portion can be realized.

In the above description of the first and second embodiments, the disc has been described as a bare disc having a diameter of 12 cm and 8 cm. However, the present invention is not limited to this.
m, 20c or smaller diameter discs as will be standardized in the future. Furthermore, even if it is a so-called cartridge type that contains a bare disk and exposes a part of it with a shutter, the turntable and the pickup are brought into contact with the cartridge shutter together with or after the slide movement of the tray. The present invention can be realized by opening and closing the shutter together with the elevation of the traverse mechanism.

In the first and second embodiments, the main gear portion is driven to rotate by using a rotation transmission mechanism that passes through a small gear group via a belt and pulleys from a motor (DC motor) at a position where the tray slides. , But is not necessarily limited to this. For example,
A direct drive motor that directly drives the main gear to rotate may be used. Alternatively, the slide-moving side of the tray is basically in front of the recording / reproducing apparatus, and electronic means such as operating means operated by a user or notifying means for notifying (displaying or sounding) the operation of the apparatus to the user. Since a circuit or the like must be configured, it is conceivable that the user wants to make space as much as possible. The main gear part is certainly involved in the operation of the cylindrical cam and the tray, so it must be arranged in the direction in which the tray is ejected.However, the motor is installed deeper, not involved in the tray sliding movement, and its rotational drive is belt,
The rotation may be transmitted to the main gear by a gear or the like. In particular, after the motor rotation shaft is arranged horizontally and the torque is increased by gears, the rotation is transmitted by one long shaft from the back to the front, and rotated at substantially right angles by worms and worm wheels, bevel gears, screw gears, etc. When the main gear is driven,
The width of the recording / reproducing apparatus does not need to be greatly increased by the rotation transmitting mechanism.

[0045]

As described above, according to the present invention, there is obtained an excellent effect that an inexpensive recording / reproducing apparatus which can be easily manufactured with a small number of parts, does not require fine adjustment, and can be easily manufactured.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a recording / reproducing apparatus according to Embodiment 1 of the present invention.

FIG. 2A is a perspective view of a configuration of a traverse unit. FIG. 2B is a perspective view of a configuration of a traverse unit.

FIG. 3 is a configuration perspective view of a cylindrical cam.

FIG. 4 is a configuration perspective view of a loading base.

FIG. 5A is a plan view of a configuration of a tray. FIG. 5B is a front view of a configuration of a tray.

FIG. 6 is an explanatory view of assembling a loading base and a cylindrical cam.

FIG. 7 is an explanatory schematic diagram of the main gear portion meshing and switching guide.

FIG. 8 is an explanatory schematic diagram of the main gear portion meshing and switching guide.

FIG. 9 is an explanatory schematic diagram of the main gear portion meshing and switching guide.

FIG. 10 is a schematic diagram for explaining the meshing of the main gear portion and the switching guide.

FIG. 11 is an explanatory schematic diagram of the main gear portion meshing and switching guide.

12A is a schematic front view of the traverse unit when the lowering is completed. FIG. 12B is a schematic front view of the traverse unit when the lowering is completed.

FIG. 13 is a schematic diagram of position detection.

14A is a perspective view showing a configuration of a traverse unit of the recording / reproducing apparatus according to the second embodiment. FIG. 14B is a perspective view showing a configuration of a traverse unit of the recording / reproducing apparatus according to the second embodiment.

FIG. 15 is a cam development view of a cylindrical cam.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traverse chassis 1a, 1b, 1c Engagement pin 1d Arc part 1e Vertical stopper 1f Horizontal stopper 2 Traverse mechanism 2a Turntable 2b Spindle motor 2c Pickup 2d Traverse mechanism 2e Damper 3 Cylindrical cam 3a Annular part 3b Cylindrical part 3c Stop part 3d Arc gear 3e Cam part 3f Switching guide pin 3g Detent pin 3h Rotating position lever 3i Manual turning lever 3j Small protrusion 4 Loading base 4a Elevating part 4b Annular step part 4c Arc wall 4d Vertical guiding part 4e Ring claw 4f Non-rotating claw 4g Vertical stop claw 4h, 4i Tray guide 4j Retaining claw 4k Shaft 4l Bounce switch 5 Gear 5a Main gear 5b Subgear 6 Rotation transmission mechanism 7 Motor 8 Tray 8a Placing section 8b Small placing section 8c Opening 8d Groove 8e Side step Part 8f stepped portion 8g rack portion 8h switching 換案 groove 8i movement position protrusion 8j detent wall 8k stopper pawl 8l manual lever exposure portion 9 clamper 9a supporting member

Claims (5)

[Claims] 1. A recording / reproducing apparatus comprising: mounting means for mounting a disc-shaped record carrier capable of recording / reproducing information; and a recording / reproducing unit for holding / recording / reproducing information while holding said disc-shaped record carrier. An engagement portion provided in the recording / reproducing portion, which protrudes in a direction substantially parallel to the disk surface of the disk-shaped record carrier, a rotation drive unit for rotating and driving, and the engagement portion rotated by the rotation drive unit and A recording / reproducing apparatus comprising: a cylindrical moving means having a cam portion to be engaged; and a vertical guide means for guiding the movement of the engaging portion in substantially the same direction as a rotation axis of the moving means. 2. A disc-shaped record carrier on which information can be recorded / reproduced is placed, and a position between a position where the disc-shaped record carrier can be ejected and a position where recording / reproducing can be performed is set in parallel with a placing surface of the disc-shaped record carrier. What is claimed is: 1. A recording / reproducing apparatus comprising: moving mounting means; and a recording / reproducing unit for recording / reproducing information by holding the disc-shaped record carrier at a position where the disc-shaped record carrier is recorded / reproduced. Rotating drive means, a moving means having an arcuate gear engaged with the main gear, and thereby rotating; a switching guide pin provided on the moving means; and a switching guide pin provided on the placing means, and provided on the main gear. A rack portion to be engaged;
A switching guide portion provided on the mounting means and capable of engaging with and guiding the switching guide pin, wherein the rack portion is attached to the main gear when the mounting means moves between a discharge position and a recording / reproducing position. A recording / reproducing apparatus, wherein a state in which only the gear meshes with the main gear and a state in which only the arcuate gear meshes with the main gear are switched by engagement of the switching guide pin and the switching guide portion. 3. A disc-shaped record carrier on which information can be recorded and reproduced is placed, and a position between a position where the disc-shaped record carrier can be discharged and a position where recording and reproduction can be performed is set in parallel with a mounting surface of the disc-shaped record carrier. A recording / reproducing apparatus comprising: a moving mounting means; and a recording / reproducing unit for recording / reproducing information by holding the disc-shaped record carrier at a position for recording / reproducing the disc-shaped record carrier, wherein the disc-shaped record carrier is provided. An engagement portion protruding in a direction substantially parallel to the rotation surface of the recording / reproducing portion, a rotation driving means for driving the main gear to rotate, and an arcuate gear engaging with the main gear. Moving, and a cylindrical moving means having a cam portion engaged with the engaging portion, a switching guide pin provided on the moving means, and provided on the placing means,
A rack portion which engages with the gear, a switching guide portion provided on the placing means, which can engage with and guide the switching guide pin, and movement of the engaging portion in substantially the same direction as the rotation axis of the moving means. A vertical guide means for guiding the main gear, when the placement means moves between the discharge position and the recording / reproducing position, a state where only the rack portion meshes with the main gear, and the arc gear is formed on the main gear. A recording / reproducing apparatus, wherein a state in which only the teeth mesh with each other is switched by engagement of the switching guide pin and the switching guide portion. 4. The recording / reproducing apparatus according to claim 2, wherein when the switching guide pin and the switching guide portion are engaged, the main gear has a state in which the rack portion and the arcuate gear mesh with each other. 5. An angle between a virtual straight line connecting the rotation center of the main gear and the rotation center of the arc gear, a virtual straight line parallel to the moving direction of the rack, and a switching guide pin of the switching guide are engaged. The angle between the starting part and the moving direction of the rack part is approximately 4
4. The recording / reproducing apparatus according to claim 2, wherein the angle is 5 degrees.