JP2004022040A - Disk recording and reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk recording and reproducing device that can discriminate the diameter of a large or a small disk in a simple configuration and also reduce the overall dimensions, the profile, and the weight of the device. <P>SOLUTION: This disk recording and reproducing device discriminates a large or a small diameter disk 1 inserted into the device main body 10 through the loading slot 10a by guiding it to the center of the device. It has projections 20a, 20b provided and extending to both sides near the loading slot 10a of the main body 10, a connection arm 20 sliding in the direction of inserting and ejecting the disk 1, a pair of contact parts 30a, 40a which are connected to the pair of the projections 20a, 20b and extending to the loading slot 10a and energized in the direction to the center, and sensor arms 30, 40 in contact with the disk inserted into the body 10 and sliding to open. The sliding of the sensor arms 30, 40 to open can change the movement of the connection arm 20 following the insertion of the disk 1 and depending on the large or small disk diameter. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a disk recording / reproducing device.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a disc recording / reproducing apparatus inserts various discs such as a CD, a CD-ROM, and a DVD to record and / or reproduce information and perform information processing of one or both of them. ) Or a small-diameter (about 8 cm) disk is guided to the center position to determine the disk diameter, so that the disk can be safely mounted on the turntable. Such a conventional technique is disclosed in, for example, Japanese Patent Application Laid-Open No. 10-116459. FIG. 6 is a diagram showing an embodiment of a conventional disc recording / reproducing apparatus for discriminating the disc 1 by guiding it to the center position. FIG. 7 is a diagram showing an operation of inserting the large-diameter and small-diameter disks 1 into the disk recording / reproducing apparatus shown in FIG.
[0003]
As shown in FIG. 6, in one embodiment of the conventional disk recording / reproducing apparatus, the outer circumference of a large-diameter disk 1a or a small-diameter disk 1b inserted into a main body 60 through an insertion opening 60a is pressed with a finger from both sides toward the center. Accordingly, detection arms 80 and 90 for guiding the disc 1 to the center position are provided, and near the detection arms 80 and 90, a roller 100 for pulling in the disc 1 inserted from the insertion slot 60a is provided. Here, the detection arms 80 and 90 are provided with pin-shaped contact portions 80a and 90a that extend substantially vertically toward the insertion opening 60a. Further, in the main body 60, a small-diameter protrusion 60b for bringing the small-diameter disk 1b drawn by the roller 100 into contact and centering the center, and a large-diameter protrusion 60c for drawing the large-diameter disk 1a and centering the center are provided. Are arranged. In the main body 60, a pair of inclined surfaces 60d projecting obliquely to both sides are provided so that when the large-diameter disk 1a is pulled in, the large-diameter disk 1a passes without contacting the small-diameter projection 60b. .
[0004]
On the other hand, the detection arms 80 and 90 are connected in the main body 60 by a connection arm 70 extending to both sides from the center of the insertion opening 60a and having a bent center, and biases the bent center of the connection arm 70, A shaft 70a extending downward from the biased center is provided and fitted into a groove 60e formed in the main body 60. As shown in FIG. 7, the groove 60e forms a concave portion 60f that is cut out so as to expand at both sides substantially at the center. Further, the detection arms 80 and 90 slide so that the disc 1 inserted from the insertion opening 60a shown in FIG. 6 is brought into contact with the contact portions 80a and 90a and is opened. A structure is provided which can switch between operation up to width D and operation up to width E for large-diameter discs.
[0005]
That is, in one embodiment of the conventional disk recording / reproducing apparatus, for example, when the small-diameter disk 1b is inserted from one of the right and left sides (dotted line shown in FIG. 6) of the main body 60, the small-diameter disk 1b is inserted into the main body 60 from one side. It has a structure that is inserted and cannot be pulled in through the small-diameter protrusion 60b by the slope 60d. In this case, as shown in FIG. 7, the detection arms 80 and 90 receive a force via the contact portion 80a on one side contacting the small-diameter disk 1b, and the oblique direction toward the center toward the connection arm 70 on one side. In order to apply a force, the center shaft 70a is slid and fitted into the recess 60f of the groove 60e. As a result, the sliding width of the contact portion 80a is limited to the width D for the small-diameter disk 1b up to the inclined surface 60d shown in FIG. 6, so that the small-diameter disk 1b inserted into the main body 60 passes through the inclined surface 60d. Instead, it can be guided to the center position and brought into contact with the small-diameter projection 60b.
[0006]
On the other hand, when the large-diameter disk 1a or the small-diameter disk 1b is inserted with the center thereof substantially aligned with the insertion opening 60a, the contact portions 80a and 90a of the detection arms 80 and 90 shown in FIG. And the connecting arms 70 connected to the detection arms 80 and 90 are evenly pushed from the left and right sides, and the shaft 70 can be slid along the center of the groove 60e to the end. . As a result, the contact portions 80a and 90a can be slid to the width E for the large-diameter disk 1a shown in FIG. 6, so that the disk 1 can be guided to a substantially central position in the main body 60, and the small-diameter protrusion 60b or the large-diameter protrusion 60b can be guided. It can be retracted to the radial projection 60c.
[0007]
As described above, in one embodiment of the conventional disk recording / reproducing apparatus, the large-diameter or small-diameter disk 1 inserted into the main body 60 through the insertion opening 60a is in a state where the contact portions 80a, 90a of the detection arms 80, 90 are inserted. By properly guiding the disk 1 to the center position according to the above, the centering at the small-diameter projection 60b or the large-diameter projection 60c is securely performed, and the disk 1 is formed so that it can be safely mounted on the turntable in the main body 60. Was.
[0008]
[Problems to be solved by the invention]
However, in the conventional disk recording / reproducing apparatus, as shown in FIG. 6, since the detection arms 80, 90, the contact portions 80a, 90a, and the connection arm 70 are arranged below the roller 100 in the main body 60, It is difficult to arrange other components on the front side in the main body 60, and the weight becomes heavy, and there is a problem that it is difficult to reduce the size, thickness, and weight of the entire device.
An object of the present invention is to solve such a problem and to provide a disk recording / reproducing apparatus capable of distinguishing a large-diameter or small-diameter disk by a simple structure and realizing a reduction in size, thickness, and weight of the entire apparatus. And
[0009]
[Means for Solving the Problems]
The present invention is directed to a disk recording / reproducing apparatus for guiding a large-diameter or small-diameter disc inserted into a main body through an insertion port to a center position of a carry-in path to make a discrimination. A connecting arm extending in the vicinity of the insertion opening from both sides from the center and protruding from the surfaces of both ends and sliding in the disc insertion / removal direction, and a pair of engagements at the protrusions at both ends of the connecting arm. A detection arm that has a pair of abutting portions that are urged toward the center and extend to the insertion port, and slide so as to abut the disc inserted into the main body and open to both sides, The operation of sliding the detection arm to open is switched between the operation for large-diameter disk and the operation for small-diameter disk by changing the engaging position of the protrusion in conjunction with the connecting arm according to the insertion state of the disk. Provide as possible.
[0010]
Here, the detection arm has a slide groove for engaging the projection of the connection arm, and a large-diameter groove for guiding the large-diameter width in one of the disc insertion and removal directions in which the connection arm slides in the slide groove. It is preferable to form a small-diameter groove for guiding to the small-diameter width on the other side, and to switch the engagement position of the protrusion in conjunction with the connecting arm. Further, the connecting arm is urged in one direction of the disk insertion / removal direction in which the projection is engaged with the large-diameter groove, and when the pair of detection arms slide so as to open evenly, the projection is urged into the large-diameter groove. Preferably, when only one side of the detection arm slides greatly, the detection arm on the other side locks the urging to the large-diameter groove and engages the projection with the small-diameter groove. Further, the connection arm and the detection arm are preferably disposed near the insertion opening in the main body, and are preferably installed in either the upper part or the lower part in the main body.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of a disk recording / reproducing apparatus according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a configuration diagram showing an embodiment of a disk recording / reproducing apparatus according to the present invention. FIG. 2 is a view showing an assembly structure of the detection arms 30, 40 and the connection arm 20 shown in FIG. FIG. 3 is a diagram showing the disk recording / reproducing apparatus shown in FIG. 1 as viewed from above. 4 is an operation explanatory view showing the operation of inserting the large-diameter disk 1a shown in FIG. 3, wherein FIG. 4 (a) shows a state before the insertion and FIG. FIG. 4D shows a state in which the large diameter disc 1a is inserted by half or more, respectively, in a state where the large diameter disc 1a is in contact with the contact portions 30a and 40a. FIGS. 5A and 5B are operation explanatory views showing the operation of inserting the small-diameter disk 1b shown in FIG. 3 in various states. FIG. 5A shows a state where the small-diameter disk 1b is inserted substantially at the center, and FIG. FIG. 5 (d) shows a state inserted with a slight shift from the center, and FIG. 5 (d) shows a state inserted with a large shift from the center.
[0012]
As shown in FIG. 1, one embodiment of a disc recording / reproducing apparatus according to the present invention includes a main body 10 in which a disc 1 such as a CD, a CD-ROM, and a DVD is inserted as in the prior art shown in FIG. Information recording and / or reproduction is performed, and at this time, either the large-diameter (approximately 12 cm) disk 1a or the small-diameter (approximately 8cm) disk 1b inserted into the main body 10 is positioned at the center position. A pair of detection arms 30 and 40 for guiding and discriminating the disc diameter, and a connecting arm 20 for connecting the pair of detection arms 30 and 40 are provided. The main body 10 also includes a roller 50 for drawing in the disk 1 inserted from the insertion opening 10a. The roller 50 pulls in the disk 1 to bring it into contact with the small-diameter disk 1b to center the center. Large-diameter projections 20a and 20b for drawing in the disk 1a and centering the center are arranged respectively. Further, in the main body 10, a pair of slopes 10d projecting inclining to both sides are provided so that when the large-diameter disk 1a is pulled in, the large-diameter disk 1a passes without contacting the small-diameter projection 10b. I have.
[0013]
Here, unlike the prior art shown in FIG. 6, the connecting arm 20 has protrusions 20a, 20b which extend from the center to both sides near the insertion opening 10a in the main body 10 and project substantially perpendicularly to the surfaces at both ends. And is slidably supported in the insertion direction of the disk 1. Further, the detection arms 30, 40 are engaged with the projections 20a, 20b at both ends of the connection arm 20 in a pair, and are urged toward the center, and a pair of contact portions 30a extending toward the insertion opening 10a. , 40a, and has a structure in which the disc 1 inserted into the main body 10 is brought into contact with the contact portions 30a, 40a, and is slid so as to open to both sides. The detection arms 30, 40 and the connecting arm 20 are arranged near the insertion opening 10a in the main body 10, and are installed in a small arrangement space in the lower part inside the main body 10. The detection arms 30, 40 slide so as to open the disc 1 in contact with the contact portions 30a, 40a, and the connecting arm 20 interlocks with the projection 20a in accordance with the inserted state of the disc 1. , 20b can be switched between the operation for the large-diameter disk and the operation for the small-diameter disk by changing the engagement position.
[0014]
More specifically, as shown in FIG. 2, the connecting arm 20 is provided with a pair of rod-shaped protrusions 10e at a lower portion in the main body 10 and fitted into the protrusions 10e to show the disk insertion direction in FIG. It is slidably supported in the front-rear direction. On the other hand, the detection arms 30 and 40 have slide grooves 32 and 42 that engage with the projections 20a and 20b of the connection arm 20, and the connection arm 20 slides in the slide grooves 32 and 42 (see FIG. 2). Large diameter grooves 32a, 42a for guiding to a large diameter width are formed on the side of the reference), and small diameter grooves 32b, 42b for guiding to a small diameter width are formed on the front side. The detection arms 30 and 40 are urged toward a protrusion 10f formed at the center of the main body 10, and slide in the opposite direction to the connection arms along the slide grooves 32 and 42. 30 and 40 are formed so as to interlock. Here, the connecting arm 20 is urged rearward in the disc insertion direction such that the protrusions 20a, 20b engage with the large-diameter grooves 32a, 42a, so that the pair of detection arms 30, 40 open evenly. When slid, the projections 20a, 20b are slid so as to always engage with the large-diameter grooves 32a, 42a. Also, for example, when only one detection arm 40 slides largely (see FIG. 5), the other detection arm 30 locks the urging for sliding the protrusion 20a toward the large-diameter groove 32a. 20a and 20b are configured to engage with the small diameter grooves 32b and 42b. As described above, in the present embodiment, a complicated mechanism is not arranged under the roller 50 and the software has a complicated protection by a structure in which the connection arm 20 is connected to the detection arms 30 and 40 and linked (linked). It is formed so that disc regulation can be performed with a simple mechanism (mechanical) without any problem. Here, as shown in FIG. 3, a chassis 12 supported in a floating state, a turntable 14 for mounting the disk 1 on the chassis 12, and an optical pickup for processing information of the disk 1 are provided in the main body 10. 16 and a plurality of other components (not shown) are stored.
[0015]
As shown in FIG. 4A, one embodiment of the disk recording / reproducing apparatus according to the present invention thus formed has a standby position in which the detection arms 30 and 40 are urged to the center in the main body 10. The disk is guided to the center position in the state. At this time, the detecting arms 30 and 40 operate for a small-diameter disk in which the contact portions 30a and 40a slide the width A up to the slope 10d according to the state of insertion of the large-diameter or small-diameter disk, and the outside of the slope 10d. And the operation for a large-diameter disk that slides in the width B up to each other is executed. First, when the large-diameter (12 cm) disk 1a is inserted, as shown in FIG. 4B, the contact portions 30a and 40a abut on the outer periphery of the large-diameter disk 1a so that the detection arms 30 and 40 are evenly distributed to the left and right. The large-diameter disk 1a is guided to the center position while being opened while being opened. At this time, the connecting arm 20 is urged (see FIG. 2) so that the projections 20a and 20b engage with the large-diameter grooves 32a and 42a (rear) of the detection arms 30 and 40. The sliders 20a and 20b are slid along the tapered portions while being engaged with the large-diameter grooves 32a and 42a. Accordingly, the detection arms 30, 40 can slide the contact portions 30a, 40a to the outside of the slope 10d having the width B shown in FIG. 4 (a), and as shown in FIG. It is opened to the diameter (12 cm) width and guided to the center position. Here, after the large-diameter disk 1a is inserted into the main body 10, the operation of the detection arms 30, 40 is detected by detection means (not shown), the roller 50 is rotated, and the large-diameter disc 1a is drawn into the main body 10 and The center position is centered by contacting the portion 10c.
[0016]
On the other hand, when inserting the small-diameter (8 cm) disk 1b, as shown in FIG. 5 (a), first, when the center of the small-diameter disk 1b is substantially aligned with the center of the main body 10, the detection arm is attached to the outer periphery of the small-diameter disk 1b. The abutment portions 30a, 40a of the 30, 40 abut against each other and open evenly to the left and right, and the outer circumference of the small-diameter disk 1b is pressed inward to be guided to the center. At this time, the connecting arm 20 slides the projections 20a and 20b along the large-diameter grooves 32a and 42a, as in the case of the large-diameter disk 1a, and makes the contact portions 30a and 40a the outer diameter of the small-diameter disk 1b. (8 cm) Open to width and guide to center position.
[0017]
When the center of the small-diameter disc 1b is slightly shifted from the center of the main body 10, as shown in FIG. 5B, the detection arm 40 on one side slides a lot and the detection arm 30 on the other side does not slide. Locks the bias to slide the connecting arm 20 backward to engage the large-diameter grooves 32a and 42a, so that the protrusion 20b does not pass through the tapered portion of the large-diameter groove 42a and engages with the small-diameter groove 42b side. The state switches. Therefore, the detection arm 40 which slides on one side slides within the width C from one end of the small-diameter groove 42b engaging with the projection 20b to the step, and the contact portion 40a presses the outer periphery of one side of the small-diameter disk 1b with the finger pressure. And gradually guide to the center position.
[0018]
Further, when the center of the small-diameter disk 1b is largely displaced from the center of the main body 10, as shown in FIG. 5C, only the detection arm 40 on one side slides greatly. 5B, only when it slides within the width C shown in FIG. 5B, and when it slides beyond this width C, the projection 20b contacts the step and locks, and the sliding width A for the small-diameter disk 1b is locked. (See FIG. 4). The width C of the small-diameter groove 42b is set to be equal to or slightly shorter than the width A shown in FIG. 4A, so that the contact portion 40a slides outward beyond the slope 10d. Can be prevented. Therefore, the small-diameter disk 1b comes into contact with the regulated detection arm 40 shown in FIG. 5C, is guided to the center side, moves almost to the center, and uniformly presses the contact portions 30a, 40a to slide. By moving it, it can be inserted into the main body 10. Here, the operation of inserting the small-diameter disk 1b shown in FIG. 5 from the right side of the main body 10 has been described. For example, even if the small-diameter disk 1b is inserted from the left side, the detection arm 30 abuts on the other abutting portion 30a and It operates symmetrically and can be guided to the center position.
[0019]
As described above, according to the disk recording / reproducing apparatus according to the embodiment of the present invention, the sliding detection arms 30, 40 are provided with the small-diameter grooves 32b, 42b and the large-diameter grooves 32a, 42a, respectively. 1 does not interfere with the arrangement space of the roller 50 as shown in FIG. 1, does not need to secure an arrangement space below the roller 50, can be formed thinner by that amount, and has a disc regulating mechanism. And the size, thickness, and weight of the entire device can be reduced.
[0020]
As described above, the embodiment of the disk recording / reproducing apparatus according to the present invention has been described in detail. However, the present invention is not limited to the above-described embodiment, and can be changed without departing from the gist thereof.
For example, although the embodiment of the disk recording / reproducing apparatus in which the detection arm and the connection arm are installed in the lower part of the main body has been described, the present invention is not limited to this, and it is also possible to install the detection arm and the connecting arm in the upper part of the main body.
Also, the embodiment of the disc recording / reproducing apparatus in which the small-diameter groove is formed in front of the slide groove and the large-diameter groove is formed in the rear has been described. However, the present invention is not limited to this. By biasing in the direction, a large-diameter groove can be formed in front of the slide groove, and a small-diameter groove can be formed behind the slide groove.
[0021]
【The invention's effect】
As described above, according to the disk recording / reproducing apparatus of the present invention, a large-diameter or small-diameter disk can be identified by a simple structure, and the entire apparatus can be reduced in size, thickness, and weight.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an embodiment of a disk recording / reproducing apparatus according to the present invention.
FIG. 2 is a view showing an assembly structure of a detection arm and a connection arm shown in FIG. 1;
FIG. 3 is a view showing the disk recording / reproducing apparatus shown in FIG. 1 as viewed from above.
FIG. 4 is an operation explanatory view showing an operation of inserting the large-diameter disk shown in FIG. 3;
FIG. 5 is an operation explanatory view showing an operation of inserting the small-diameter disk shown in FIG. 3 in various states.
FIG. 6 is a diagram showing an embodiment of a conventional disk recording / reproducing apparatus.
FIG. 7 is a diagram showing an operation of inserting a large-diameter and a small-diameter disc into the disc recording / reproducing apparatus shown in FIG. 6;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Disk 1a Large diameter disk 1b Small diameter disk 10 Main body 10a Insertion opening 10b Small diameter projection 10c Large diameter projection 10d Slope 10e, 10f Projection 12 Chassis 14 Turntable 16 Optical pickup 20 Connection arm 20a, 20b Projection 30, 40 Detection arm 30a, 40a Contact portions 32, 42 Slide grooves 32a, 42a Large diameter grooves 32b, 42b Small diameter grooves 50 Roller

Claims (4)

In a disc recording / reproducing apparatus that discriminates a large-diameter or small-diameter disc inserted into the main body through an insertion port by guiding the disc to a center position of a loading path
A connecting arm extending in the vicinity of the insertion opening in the main body and having a protrusion protruding from the center on both sides from the center and protruding from the surfaces of both ends, and sliding in the insertion and removal direction of the disc;
The discs inserted into the main body have a pair of abutting portions which are urged toward the center by engaging a pair with the protrusions at both ends of the connecting arm, and which extend to the insertion opening. And a detection arm that slides to open on both sides.
The operation of sliding the detection arm to open is such that the connecting arm changes the engagement position of the protrusion in accordance with the insertion state of the disk, and thereby the operation for the large-diameter disk and the operation for the small-diameter disk. A disk recording / reproducing apparatus characterized by being provided so as to be switchable between a recording and reproducing operation. The disk recording / reproducing apparatus according to claim 1,
The detection arm has a slide groove for engaging a projection of the connection arm, and a large diameter guide that guides up to a large diameter width in one of the disk insertion and removal directions in which the connection arm slides in the slide groove. A disk recording / reproducing apparatus, wherein a groove and a small-diameter groove for guiding to a small-diameter width are formed on the other side, and the connecting arm switches the engagement position of the projection in conjunction with each other. 3. The disk recording / reproducing apparatus according to claim 2,
The connecting arm is urged in one of the disc insertion / removal directions for engaging the protrusion with the large-diameter groove, and when the pair of detection arms slide so as to open evenly, the urging causes the protrusion to be engaged. Is engaged with the large-diameter groove, and when only one side of the detection arm slides greatly, the detection arm on the other side locks the urging to the large-diameter groove and engages the protrusion with the small-diameter groove. A disk recording / reproducing apparatus characterized by the above-mentioned. 4. The disc recording / reproducing apparatus according to claim 1, wherein
The disc recording / reproducing apparatus, wherein the connection arm and the detection arm are arranged near an insertion slot in the main body, and are installed at one of an upper part and a lower part in the main body.

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