JP2005085342A - Disk transport device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent stain of a transported disk. <P>SOLUTION: This device is provided with a disk insertion opening 4 in which an optical disk 2 to be reproduced is inserted, and a transport mechanism 7 transporting the optical disk 2 inserted from the disk insertion opening 4, the transport mechanism 7 is provided separating in the same direction as a transport direction of the optical disk 2, and the mechanism has transport rollers 21a, 21b, 22a, 22b transporting the optical disk 2 by coming into contact with an outer peripheral plane of the transported optical disk 2 and rotating, transport members 23a, 23b, to which the transport rollers 21a, 21b, 22a, 22b are attached, rotation fulcrum parts 28a, 28b which are provided at the transport members 23a, 23b between the transport rollers 21a, 21b, 22a, 22b and which move each transport roller 21a, 21b, 22a, 22b in the direction of approaching and separating for the outer peripheral plane of the transported optical disk 2, and a tension coil spring 25 energizing the transport members 23a, 23b in the direction of the outer peripheral plane of the transported optical disk 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a disk transport apparatus that transports a disk inserted into a disk insertion slot to a recording and / or reproducing unit.

  A so-called slot-in type in which a disc is inserted from a disc insertion port provided in an outer casing and conveyed to, for example, a recording and / or reproducing unit, is used in a disc transport device used in a disc recording and / or reproducing device such as an optical disc. There is a device. Specifically, the slot-in type disk transport device includes at least a pair of transport rollers provided apart from each other in the thickness direction of the optical disk. This disk transport device, for example, rotates a pair of transport rollers in the forward rotation direction to draw the optical disk inserted from the disk insertion slot into the apparatus for recording and reproduction, and when taking out the inserted optical disk, For example, the pair of transport rollers are rotated in the reverse direction and pulled out of the apparatus.

  In this slot-in type disc transport device, since the optical disc is directly loaded into the device, the entire device can be reduced in size, and the inserted optical disc is mounted on, for example, a recording and / or reproducing unit. Loading time can be shortened.

  However, since this disc transport device sandwiches the optical disc between a pair of transport rollers, the signal recording surface of the optical disc and the transport roller are in direct contact. For this reason, there is a possibility that the signal recording surface of the optical disk is soiled by repeated loading, and when the signal recording surface is soiled, an information signal recording error or reproduction error may be caused.

  In addition, as this type of disk transport device, there is a device as described in Patent Document 1 below.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a disc transport apparatus that can stably transport a transported disc without fouling.

  The disc transport device according to the present invention comprises transport means for transporting the inserted recording or reproducing disc, and the transport means is provided in the same direction as the transport direction of the disc, and the outer periphery of the transported disc A pair of conveying rollers that contact the surface and rotate to convey the disk, a conveying member to which the pair of conveying rollers are attached, and a disk that conveys each conveying roller provided on the conveying member between the pair of conveying rollers A pivot fulcrum portion that moves in a direction of approaching and separating from the outer peripheral surface of the disc and a biasing member that biases the disc in the direction of the outer peripheral surface of the disk that transports the transport member.

  According to the present invention, at any time, any one of the transport rollers can contact the outer peripheral surface of the disk and stably transport the disk.

  Hereinafter, a disk transport device to which the present invention is applied will be described with reference to the drawings.

  As shown in FIG. 1, a disk transport apparatus 1 to which the present invention is applied has an apparatus main body 3 provided with a disk insertion slot 4 into / from which an optical disk 2 serving as a recording medium is inserted / removed. Inside the apparatus main body 3, a stocker 5 on which the optical disk 2 is waiting is provided, and a reproducing unit 6 that reproduces an information signal recorded on the optical disk 2 is provided at the back of the stocker 5. In the apparatus body 2, a transport mechanism 7 is provided for transporting the optical disk 2 inserted from the disk insertion port 4 to the stocker 5 or the reproducing unit 6. The transport mechanism 7 transports the optical disk 2 inserted from the disk insertion slot 4 to the stocker 5, and further transports the optical disk 2 in the stocker 6 to the playback unit 6. Further, the transport mechanism 7 transports the optical disc 2 in the stocker 5 to the disc insertion / removal port 4, and further transports the optical disc 2 in the reproducing unit 6 to the stocker 5.

  The disc insertion slot 4 is formed so that the optical disc 2 is directly inserted and the horizontal width is substantially the same as the diameter of the optical disc 2 and the vertical width is substantially the same as the thickness of the optical disc 2 to be inserted. An optical disk 2a having a diameter of 12 cm and an optical disk 2b having a diameter of 8 cm can be selectively inserted into the optical disk inserted into the disk insertion slot 4. Hereinafter, these two optical disks are simply referred to as an optical disk 2 unless they are particularly distinguished. The optical disc 2 has a center hole 2c formed at the center.

  In addition to the disc insertion slot 4, for example, an operation unit 8 for executing various functions provided in the apparatus is provided on the front surface of the apparatus main body 2. The operation unit 8 includes a playback start button, a playback stop button, a playback pause button, a track jump button, and the like, and includes, for example, a push button. Further, a display unit 9 for displaying the operation status of the apparatus is provided on the front surface of the apparatus body 2. The display unit 9 includes an LCD (Liquid Crystal Display), an LED (Light Emitting Diode), and the like, and displays the title, artist name, playback time, and the like of the audio data being played back.

  The stocker 5 holds the optical disc 2 in a standby state in which the user has just inserted it into the disc insertion slot 4 and is not playing back.

  The reproducing unit 6 has a base 11, which detects a return light beam reflected on the optical disk 2 by irradiating the optical disk 2 with the optical disk 2 and rotating the optical disk 2. And an optical pickup 13.

  The disk rotation drive mechanism 12 includes a disk table 12 a that is integrally attached to the spindle of a spindle motor that is attached to the back surface of the base 11. The disc table 12 a has a centering portion 12 b that engages with the center hole 2 c of the optical disc 2. The disc table 12a engages the centering portion 12b with the center hole 2c of the optical disc 2, further sandwiches the peripheral portion of the center hole of the optical disc 2 with a clamping plate (not shown), and rotates the optical disc 2 at a constant linear velocity, for example. .

  An optical pickup 13 that irradiates a light beam onto the optical disk 2 rotated by the disk rotation driving mechanism 12 includes a semiconductor laser as a light source, an objective lens 13 a that condenses the light beam emitted from the semiconductor laser, and the optical disk 2. A photodetector for detecting the reflected return light beam is provided. The light beam emitted from the semiconductor laser is collected by the objective lens 13a, irradiated onto the signal recording surface of the optical disc 2, and the returned light beam reflected by the reflective film is detected by the photodetector. When the optical pickup 13 detects the return light beam reflected by the optical disc 2 by the photodetector, it performs photoelectric conversion and outputs an electrical signal.

  Although not described in detail, the objective lens 13a is supported by an objective lens driving mechanism that is displaced in the optical axis direction of the light beam and that is displaced in a direction orthogonal to the recording track of the optical disc 2. The objective lens driving mechanism displaces the objective lens 13a in the optical axis direction of the light beam so that the focusing error becomes 0 based on the focusing error signal generated based on the electrical signal output from the photodetector. The objective lens 13a is displaced in a direction orthogonal to the recording track of the optical disc 2 so that the tracking error becomes zero based on the tracking error signal generated based on the electrical signal output from the photodetector.

  As described above, the apparatus main body 2 is provided with the disc insertion slot 4, the stocker 5, and the reproducing unit 6 in order from the front side to the back side. The optical disk 2 is transported between the disk insertion slot 4 and the stocker 5 and between the stocker 5 and the reproducing unit 6 in the directions of arrow A and counter arrow A in FIG. Here, FIG. 2 shows a basic configuration of the transport mechanism 7. As shown in FIG. 2, the transport mechanism 7 is provided so as to cross the optical disk 2 to be transported, and the same mechanism is provided on one side and the other side of the optical disk 2.

  That is, the transport mechanism 7 has the first transport rollers 21a and 21b and the second transport rollers 22a and 22b that are in contact with the outer peripheral surface of the optical disc 2, and the first transport rollers 21a and 21b attached to one end and the other end. The transport members 23a and 23a to which the second transport rollers 22a and 22b are attached, the rotation support members 24a and 24a to which the transport members 23a and 23b are rotatably mounted, and the rotation support members 24a and 24b are close to each other. And a tension coil spring 25.

  The first and second transport rollers 21a, 21b, 22a, and 22b are connected by a connecting member such as an endless belt. Although not shown, the first and second transport rollers 21a and 22a or the first and second transport rollers 21a, 21b, 22a, and 22b are connected by a connecting member such as an endless belt. Are rotated in the same direction and at the same speed by a drive mechanism such as a drive motor provided on either or both sides of the transport rollers 21b and 22b. Since the first and second transport rollers 21a, 21b, 22a, and 22b are in contact with the outer peripheral surface of the optical disk 2 to be transported, a friction member such as rubber is provided on the portion that contacts the outer peripheral surface of the optical disk 2, and slips. The optical disk 2 can be smoothly transported without any problem. Note that the driving method of the first and second transport rollers 21a, 21b, 22a, and 22b is not to use an endless belt, but each roller may be provided with a drive mechanism such as a drive motor.

  The first transport rollers 21a and 21b are rotatably attached to one end of the transport members 23a and 23b by first support shafts 26a and 26b, and the second transport rollers 22a and 22b are connected to the transport members 23a and 23b. The other end is rotatably attached by second support shafts 27a and 27b. The conveyance members 23a and 23b are arranged between the first conveyance rollers 21a and 21b and the second conveyance rollers 22a and 22b by rotation shafts 28a and 28b serving as rotation fulcrum portions. It is attached to one end so as to be rotatable in the direction of arrow B and the direction of counter arrow B in FIG. The other ends of the rotation support members 24a and 24b are pulled in the direction of arrow C in FIG.

  In the transport mechanism 7 as described above, the first and second transport rollers 21a, 21b, 22a, and 22b are connected by an endless belt or the like, so that they rotate in the same direction and at the same speed. Further, the conveying members 23a, 23b to which the first and second conveying rollers 21a, 21b, 22a, 22b are attached are in the direction indicated by the arrow B in FIG. 2 according to the outer shape of the optical disk 2 around the rotating shafts 28a, 28b. And it rotates in the direction of the opposite arrow B. Further, the rotation support members 24a and 24b are pulled in the direction of arrow C in FIG. Accordingly, the first and second transport rollers 21 a, 21 b, 22 a, and 22 b always contact the outer peripheral surface of the optical disc 2 and rotate at the same speed in the same direction while being in contact with the outer peripheral surface of the optical disc 2. Therefore, the transport mechanism 7 can transport the optical disc 7 in the direction of arrow A and the direction of the counter arrow A in FIG.

Here, conditions when the optical disk 2 is transported by the first and second transport rollers 21a, 21b, 22a, and 22b will be described with reference to FIG. As described above, the first and second transport rollers 21 a, 21 b, 22 a, and 22 b are always in contact with the outer peripheral surface of the optical disk 2 by the tension coil spring 25 when the optical disk 2 is transported. Here, the biasing force of the tension coil spring 25 is X, the friction coefficient of the first and second transport rollers 21a, 21b, 22a and 22b with the outer peripheral surface of the optical disk 2 is μ, and the first and second transport rollers. If the normal force 21a, 21b, 22a, 22b receives from the optical disc 2 is N,
Xsin θ = μN
The conditional expression is established.

  However, θ is a line segment L2 that passes through the center P and is perpendicular to the line segment L1 when the line segment along the direction of arrow A in FIG. This is an angle formed by a line segment L3 connecting the rotation centers Q of the first and second transport rollers 21a, 21b, 22a, and 22b. Hereinafter, this angle θ is referred to as a contact angle. Since N = X cos θ, X sin θ = μX cos θ is established, and sin θ = μ cos θ, and μ = tan θ. Accordingly, the friction coefficient μ must be increased as the contact angle θ increases, and the first and second transport rollers 21 a, 21 b, 22 a, and 22 b become slippery with respect to the outer peripheral surface of the optical disc 2.

  As described above, whether or not the first and second transport rollers 21a, 21b, 22a, and 22b slide with respect to the outer peripheral surface of the optical disk 2 depends on the friction coefficient μ regardless of the biasing force X of the tension coil spring 25. . Therefore, in order to reliably carry the optical disc 2, the contact angle θ should be as small as possible. When the optical disc 2 is sent from the first carrying rollers 21a and 21b to the second carrying rollers 22a and 22b, When the two transport rollers 22a and 22b deliver to the first transport rollers 21a and 21b, the transport rollers on the delivery side are separated as much as possible, and the distance from the line segment L1 in the transport direction (A direction) is large. Better.

  On the other hand, the urging force X of the tension coil spring 25 is such that the first and second transport rollers 21a, 21b, 21b, 21c, the center Q of the first and second transport rollers 21a, 21b, 22a, 22b coincide with the line segment L2. Since 22a and 22b are moved away from each other, it becomes a load on the conveyance. After the center Q of the first and second conveyance rollers 21a, 21b, 22a, and 22b coincides with the line segment L2, Since the first and second transport rollers 21a, 21b, 22a, and 22b are moved in directions close to each other by the biasing force X of the tension coil spring 25, the first and second transport rollers 21a, 21b, 22a, and 22b assist the transport.

  Incidentally, as a premise of the transport mechanism 7 to which the present invention shown in FIG. 2 is applied, there is a transport mechanism as shown in FIG. Note that components corresponding to those of the transport mechanism 7 shown in FIG. As shown in FIG. 4, the transport mechanism 31 is substantially T-shaped with first arm portions 33a and 33b and second arm portions 34a and 34b formed in the middle of the first arm portions 33a and 33b. It has the conveyance members 32a and 32b formed in the shape. First and second transport rollers 21a, 21b, 22a, and 22b are attached to first and second support shafts 26a, 26b, 27a, and 27b, respectively, at the ends of the first arm portions 33a and 33b. Yes. Each end of a tension coil spring 35 serving as a biasing member is attached to the second arm portions 34a and 34b, and the conveying members 32a and 32b are pulled in the direction of arrow C in FIG. That is, in the transport mechanism 31, like the transport mechanism 7 shown in FIG. 2, the first transport rollers 21a and 21b and the second transport rollers 22a and 22b are connected by an endless belt or the like, and in the same direction and at the same speed. Although it rotates, it does not have the rotating shafts 28a and 28b.

  In the transport mechanism 31 as described above, the first and second transport rollers 21a, 21b, 22a, and 22b are connected by an endless belt or the like, so that they rotate in the same direction and at the same speed. Further, the conveying members 32a, 32b to which the first and second conveying rollers 21a, 21b, 22a, 22b are attached are pulled by the tension coil spring 25 in the direction of arrow C in FIG. Therefore, the first transport rollers 21a and 21b and the second transport rollers 22a and 22b basically come into selective contact with the outer peripheral surface of the optical disc 2, and the optical disc 7 is moved in the direction indicated by the arrow A in FIG. It can be conveyed in the A direction.

  However, when the maximum width portion of the optical disk 2 is positioned between the first transport rollers 21a and 21b and the second transport rollers 22a and 22b, the first transport rollers 21a and 21b and the second transport roller 22a. , 22b is not touched. Therefore, the transport mechanism 31 cannot transport the optical disc 2 stably.

  Therefore, there is a transport mechanism 41 shown in FIG. 5 as a solution to the problem of the transport mechanism 31 shown in FIG. Note that components corresponding to those of the transport mechanism 7 shown in FIG. The transport mechanism 41 is a first transport member 42a, 42b to which the first transport rollers 21a, 21b are attached at one end, and a biasing member attached to the other end of the first transport members 42a, 42b. The first conveyance rollers 21a and 21b are attached to first support shafts 26a and 26b provided at one ends of the first conveyance members 42a and 42b.

  Furthermore, the second transport members 44a and 44b to which the second transport rollers 22a and 22b are attached at one end and the second tension coil spring 45 attached to the other end of the second transport members 44a and 44b are provided. The two transport rollers 22a and 22b are attached to second support shafts 27a and 27b formed at one end of the second transport members 44a and 44b. Each of the first transport rollers 21 a and 21 b and the second transport rollers 22 a and 22 b moves only in the direction orthogonal to the arrow A direction as the transport direction of the optical disc 2, and does not move in the transport direction of the optical disc 2.

  In the transport mechanism 41, the first transport rollers 21a and 21b and the second transport rollers 22a and 22b are connected by an endless belt or the like and rotate at the same speed in the same direction as the transport mechanism 7 shown in FIG. In this respect, the transfer mechanism 7 shown in FIG. 2 is common to the transfer mechanism 31 shown in FIG. However, the transport mechanism 41 urges the first transport rollers 21a and 21b and the second transport rollers 22a and 22b with separate tension coil springs 43 and 45 in the direction of arrow C in FIG. This is different from the above-described two transport mechanisms 7 and 31 in that any one of the transport rollers 21a and 21b and the second transport rollers 22a and 22b is always in contact with the outer peripheral surface of the optical disc 2.

  In the transport mechanism 41 as described above, any one of the first transport rollers 21a and 21b and the second transport rollers 22a and 22b always comes into contact with the outer peripheral surface of the optical disk 2 to be transported. 5 can be stably conveyed in the direction of arrow A and the direction of counter arrow A.

  Here, a state where the optical disk 2 of the transport mechanism 41 shown in FIG. 5 is transported in the direction of arrow A in FIG. 6 will be described. FIG. 6A shows a state where the optical disk 2 is at the first position, and FIG. 6B shows a state where the optical disk 2 is at the second position downstream from the first position. In FIGS. 6A and 6B, a line segment L11 connects the centers of the first transport rollers 21a and 21b, and indicates the arrangement positions of the first transport rollers 21a and 21b. A line segment L12 connects the centers of the second transport rollers 22a and 22b, and indicates the arrangement position of the second transport rollers 22a and 22b.

  When the optical disk 2 is moved from the first position to the second position, the first transport rollers 21a and 21b move the outer peripheral surface of the optical disk 2 from the distance indicated by the alternate long and short dash line in FIG. Moving. At this time, since the second transport rollers 22a and 22b rotate at the same speed in the same direction as the first transport rollers 21a and 21b, they are the same as the first transport rollers 21a and 21b. Just move. Therefore, the second transport rollers 22a and 22b should also move by the same distance as the first transport rollers 21a and 21b, and should move from point C to point D in the figure.

  However, the second transport rollers 22a and 22b are fixed to a housing (not shown) by a line segment L12, and do not move in the direction of the arrow A and the direction of the counter arrow A, which are the transport direction of the optical disc 2. Therefore, the second transport rollers 22a and 22b actually move from the point C to the point E in the drawing. Therefore, the distance between the point D and the point E is generated by the interference of the driving force between the first transport rollers 21a and 21b and the second transport rollers 22a and 22b. More specifically, interference between the urging force of the first pull 43 that urges the first transport rollers 21a and 21b and the urging force of the second tension coil spring 45 that biases the second transport rollers 22a and 22b. Then, the first conveying rollers 21 a and 21 b interfere with the driving force due to the interference between the speed at which the optical disk 2 is sent out and the speed at which the second conveying rollers 22 a and 22 b send the optical disk 2. As a result, the second transport rollers 22a and 22b slip with respect to the outer peripheral surface of the optical disc 2, or the first and second transport members 42a, 42b, 44a and 44b are deformed. This phenomenon also occurs in the first transport rollers 21a and 21b when transporting the optical disk 2 in the direction of the arrow A in the figure.

  When the first and second transport rollers 21a, 21b, 22a, and 22b slip relative to the outer peripheral surface of the optical disc 2, the first and second transport rollers 21a, 21b, 22a, and 22b contact the outer peripheral surface of the optical disc 2. Contact surface is subject to wear. Further, if the first and second link members 42a, 42b, 44a, 44b are repeatedly deformed, they may be mechanically fatigued and damaged.

  In this respect, in the transport mechanism 7 shown in FIG. 2, the transport members 23a and 23b to which the first and second transport rollers 21a, 21b, 22a and 22b are attached are transported by the transport members 23a and 23b. 2a and 28b, the optical disk 2 rotates in the direction indicated by the arrow B and the direction opposite to the arrow B according to the outer shape of the optical disk 2. FIG. 7A shows a state in which the optical disk 2 is at the first position, and FIG. 7B shows a state in which the optical disk 2 is at the second position downstream from the first position. The first and second transport rollers 21a, 21b, 22a, 22b are attached to both ends of the transport members 23a, 23b, and the distance between the first transport rollers 21a, 21b and the second transport rollers 22a, 22b is as follows. Further, since the transport members 23a and 23b rotate around the rotation shafts 28a and 28b and move according to the outer peripheral surface of the transported optical disk 2, the center P of the transported optical disk 2 and the first transport An angle α formed by a line segment L21 connecting the center Q1 of the rollers 21a and 21b and a line segment L22 connecting the center P2 of the optical disc 2 and the center Q2 of the second transport rollers 22a and 22b is the position of the optical disc 2 to be transported. Regardless of, it becomes constant. Also, since there is only one tension coil spring, there is no interference of the urging force.

  Therefore, when the disk 2 is moved from the first position to the second position, the first transport rollers 21a and 21b are moved by the distance indicated by the alternate long and short dash line in the figure, that is, from the A point to the B point. To move. At this time, since the second transport rollers 22a and 22b are rotating at the same speed in the same direction as the first transport rollers 21a and 21b, the second transport rollers 22a and 22b are moved by the same distance as the first transport rollers 21a and 21b. Move from point C to point D in the figure.

  That is, in the transport mechanism 7 to which the present invention is applied, the maximum width portion of the optical disc 2 is formed between the first transport rollers 21a and 21b and the second transport rollers 22a and 22b as in the transport mechanism 31 shown in FIG. When positioned in between, there is no problem that the first conveying rollers 21a and 21b and the second conveying rollers 22a and 22b do not come into contact with each other. Further, like the transport mechanism 41 shown in FIGS. 5, 6A and 6B, the second transport rollers 22a and 22b move beyond the moving distance of the first transport rollers 21a and 21b. The second transport rollers 22a and 22b do not slip or the like.

  Next, the operation of the disc transport device 1 will be described. As shown in FIG. 1, an optical disc 2a having a diameter of 12 cm and an optical disc 2b having a diameter of 8 cm are directly inserted into the disc transport device 1 from the disc insertion slot 4. The The transport mechanism 7 is attached in the direction of arrow C in FIG. 2 where the first transport rollers 21a and 21b and the second transport rollers 22a and 22b are close to each other by the biasing force of the tension coil spring 25 before the optical disk 2 is inserted. The gap is positioned so as to contact the outer peripheral surface of the optical disk 2b having a small diameter.

  When the optical disk 2 is inserted from the disk insertion port 4, the disk transport device 1 drives a drive mechanism (not shown) and pulls the optical disk 2 into the device body 3 in the direction in which the first and second transport rollers 21a and 21b are driven. , 22a and 22b are rotated in the same direction and at the same speed. The optical disc 2 inserted from the disc insertion slot 4 comes into contact with the first transport rollers 21a and 21b at its outer peripheral surface, and is gradually drawn in the direction of arrow A in FIG. In the initial stage of conveyance, the first conveyance rollers 21a and 21b gradually spread from positions close to each other. Then, as the first transport rollers 21 a and 21 b gradually pull the optical disk 2, the transport members 23 a and 23 b and the rotation support members 24 a and 24 b resist the urging force of the tension coil spring 25 according to the outer shape of the optical disk 2. 2 moves in the direction of the opposite arrow C in FIG. 2, and the conveying members 23a and 23b rotate in the direction of arrow B in FIG. Thus, the first transport rollers 21a and 21b pull the optical disk 2 into the apparatus main body 3 while moving in directions away from each other.

  When the predetermined amount of the optical disk 2 is pulled in and in the middle of conveyance, the distance between the first conveyance rollers 21a and 21b and the distance between the second conveyance rollers 22a and 22b are substantially the same, and the second optical disk 2 has its outer circumference. The surface comes into contact with the second transport rollers 22a and 22b, and is further drawn in the direction of arrow A in FIG. 2 by the first and second transport rollers 21a, 21b, 22a and 22b. Then, according to the width of the optical disk 2, the transport members 23 a and 23 b and the rotation support members 24 a and 24 b move in the direction opposite to the arrow C in FIG. 2 against the urging force of the tension coil spring 25, and It rotates in the direction of arrow B in FIG. 2 according to the outer shape. The optical disk 2 is transferred from the first transport rollers 21a and 21b to the second transport rollers 22a and 22b.

  Then, at the end of conveyance, the outer peripheral surface of the optical disk 2 is separated from the first conveyance rollers 21 a and 21 b, and then the second conveyance rollers 22 a and 22 b gradually follow the outer shape of the optical disk 2 by the urging force of the tension coil spring 25. The second transport rollers 22a and 22b are sent to the stocker 5 and the reproducing unit 6.

  When the optical disk 2 in the reproducing unit 6 is transported to the stocker 5 or the disk insertion slot 4, the optical disk 2 is transported from the second transport rollers 22a and 22b to the first transport rollers 21a and 21b, and the above operation is performed. Reverse the operation.

  When the optical disc 2 is conveyed to the reproducing unit 6, the recorded information signal is reproduced. In other words, the optical pickup 13 is recorded on the optical disc 2 by irradiating the optical disc 2 rotated by the disc rotation drive mechanism 12 with a light beam and detecting the return light beam reflected by the optical disc 2. Is played back.

  In the disk transport apparatus 1 as described above, when the optical disk 2 is transported, the first and second transport rollers 21a, 21b, 22a, and 22b are brought into contact with the outer peripheral surface of the optical disk 2 and transported. It is possible to prevent the signal recording surface from being soiled. The transport mechanism 7 always transports the optical disc 2 stably because any one of the first transport rollers 21a and 21b and the second transport rollers 22a and 22b is in contact with the optical disc 2 at all times. In addition, since the first transport rollers 21a and 21b and the second transport rollers 22a and 22b do not slip with respect to the outer peripheral surface of the optical disc 2, the first and second transport rollers 21a and 21a, It is also possible to prevent 21b from being worn.

  In the transport mechanism 7 described in the above example, the first and second transport rollers 21a, 21b, 22a, and 22b are provided on the transport members 23a and 23b, but the first transport roller 21a is further provided. , 21b and the second transport rollers 22a, 22b may be provided with a further transport roller to extend the transportable distance of the optical disc 2, and the first and second transport rollers 21a, 21b, 22a. , 22b may be further provided to extend the transportable distance of the optical disc 2. Further, the first and second transport rollers 21 a, 21 b, 22 a, and 22 b of the transport mechanism 7 are not provided on both sides of the optical disc 2, but are provided only on one side, and the other side is provided on the optical disc 2. A restriction plate against which the outer peripheral surface is abutted may be provided.

  In the present invention, the transport mechanism 7 is provided on one side of the optical disc 2, a guide wall on which the outer peripheral surface of the optical disc 2 is slid is provided on the other side, and the optical disc 2 is sandwiched between the transport mechanism 7 and the guide wall. However, it may be conveyed.

  Further, according to the transport mechanism 7 to which the present invention is applied, the distance between the pair of transport rollers 21a and 22a that transports the optical disc 2 and the pair of transport rollers 21b and 22b can be set longer than that of the conventional transport mechanism. it can. Therefore, according to the present invention, when the optical disc 2 is transported by the same distance, the number of parts can be reduced.

  Next, another example of the transport mechanism 7 to which the present invention is applied will be described. As shown in FIGS. 8 and 9, the transport mechanism 51 has a base 52, and the first transport members 53 a and 53 b and the second transport members 54 a and 54 b for transporting the optical disk 2 to the base 52. 54b and moving members 55a and 55b that guide the movement of the first and second transport members 53a, 53b, 54a, and 54b are provided.

  The first transport members 53a and 53b are provided with first transport rollers 56a and 56b for transporting the optical disc 2 at one end. The first transport rollers 56a and 56b are formed of a material having a large frictional force, such as a rubber roller, so as to be surely in contact with the outer peripheral surface of the transported optical disk 2. Engaging grooves 57a and 57b with which the outer peripheral edge of the optical disk 2 is engaged are formed on the outer peripheral surface of the first transport rollers 56a and 56b. The first transport members 53a and 53b are formed with first guide pieces 58a and 58b that are engaged with the outer peripheral portion of the optical disk 2 to be transported and guide the transport of the optical disk 2. The inner sides of the first guide pieces 58a and 58b are formed in a substantially C shape with the inner sides opened, and the outer periphery of the optical disc 2 conveyed by the first conveying rollers 56a and 56b is engaged. The first guide pieces 58a, 58b are attached to the first conveying members 53a, 53b as rotating shafts 69a, 69b, and the rotating shaft portions 69a, 69b are the first of the moving members 55a, 55b. It faces the other surface side of the base 52 from the substantially rectangular first openings 59a and 59b formed in the base 52 through the guide holes 88a and 88b.

  The other end of the second transport member 56b is rotatably attached to the other end of the first transport members 53a and 53b. Although details are omitted, a rotation shaft formed on one of the other ends of the first transport members 53a and 53b and the other end of the second transport members 54a and 54b is attached to a shaft hole formed on the other. As a result, the first transport members 53a and 53b and the second transport members 54a and 54b are rotatably attached, and the first transport members 53a and 53b and the second transport members 54a and 54b are connected to each other. The connecting portions are the link portions 60a and 60b.

  The link units 60a and 60b are provided with second transport rollers 65a and 65b for transporting the optical disc 2. The second transport rollers 65a and 65b are formed of rubber rollers in the same manner as the first transport rollers 56a and 56b. Engaging grooves 66a and 66b with which the outer peripheral edge of the optical disc 2 is engaged are formed in the second transport rollers 65a and 65b. The second conveying rollers 65a and 65b are exposed to the other surface side of the base 52 through the moving members 55a and 55b and the moving guide holes 67a and 67b of the base 52.

  At one end of the second transport members 54a and 54b, third transport rollers 61a and 61b for transporting the optical disc 2 are provided. The third transport rollers 61a and 61b are formed of rubber rollers in the same manner as the first transport rollers 56a and 56b. Engagement grooves 62a and 62b with which the outer peripheral edge of the optical disk 2 is engaged are formed in the third transport rollers 61a and 61b. In the middle of the second transport members 54a and 54b, second guide pieces 63a and 63b for engaging the outer periphery of the optical disk 2 to be transported and guiding the transport of the optical disk 2 are formed. The second guide pieces 63a and 63b are formed in a substantially C shape with the inside opened, and the outer peripheral portion of the optical disc 2 conveyed by the second and third conveyance rollers 65a, 65b, 61a and 61b is formed. Engaged. The second guide pieces 63a and 63b have rotating shafts 70a and 70b attached to the second conveying members 54a and 54b, and the rotating shaft portions 70a and 70b are the second parts of the moving members 55a and 55b. It faces the other surface side of the base 52 from the substantially rectangular second openings 64a and 64b formed in the base 52 through the guide holes 88c and 88d.

  Further, a biasing member is provided between the link portion 60a of the first and second transport members 53a and 54a on one side and the link portion 60b of the first and second transport members 53b and 54b on the other side. A tension coil spring 68 is stretched over. One end of the tension coil spring 68 is locked to the locking piece 68a of the link portion 60a of the first conveying member 53a on one side, and the other end is locked to the link portion 60b of the second conveying member 54b on the other side. Locked to the piece 68b. The tension coil spring 68 urges the first and second transport members 53a and 53b and the moving members 55a and 55b in the direction of arrow C in FIGS. 8 and 9 where the second transport rollers 65a and 65b are close to each other.

  The moving members 55a and 55b are members that linearly move on the base 52 in the directions of arrows C and C in FIG. 8 and FIG. 9 orthogonal to the transport direction of the optical disc 2, and on one end side, First guide protrusions 72a and 72b engaged with first guide holes 71a and 71b formed in the base 52 are formed, and second guide holes 73a and 73b formed in the base 52 are formed on the other end side. Second guide protrusions 74a and 74b that are engaged with each other are formed. The moving members 55a and 55b are formed with third guide protrusions 76a and 76b engaged with third guide holes 75a and 75b formed in the base 52 in the middle, and the base 52 The fourth guide protrusions 78a and 78b are formed to be engaged with the fourth guide holes 77a and 77b formed in the above.

  Further, the moving members 55a and 55b are formed with long portions 81a and 81b provided in the direction of arrow C and the direction of counter arrow C in FIGS. 8 and 9 orthogonal to the transport direction of the optical disc 2, respectively. Rack gears 82a and 82b are formed on the side edges of 81a and 81b facing each other. The rack gears 82 a and 82 b are meshed with a connection gear 83 provided on the base 52. When the rack gears 82a and 82b are engaged with the connecting gear 83, the moving members 55a and 55b always move in the opposite direction, that is, in the directions indicated by the arrows C and the opposite arrows C in FIGS. Further, guide recesses 84a and 84b with which the long portions 81a and 81b are engaged are formed in the moving members 55a and 55b. Further, guide holes 85a and 85b with which the second transport rollers 65a and 65b are engaged are formed in the vicinity of the guide recesses 84a and 84b.

  Further, the rotation members 55a and 55b are formed with first rotation restricting pieces 86a and 86b for restricting the amount of rotation of the first transport members 53a and 53b, and the amount of rotation of the second transport member 54a. The second rotation restricting pieces 87a and 87b are formed. The inner first and second rotation restricting pieces 86a, 86b, 87a, 87b are formed when the first and second transport members 53a, 53b, 54a, 54b are opened outward, that is, the link portions 60a, 60b are The movement of the first and second transport members 53a, 53b, 54a, 54b when approaching each other is restricted, and the outer first and second rotation restricting pieces 86a, 86b, 87a, 87b are the first and first The movement of the first and second transport members 53a, 53b, 54a, and 54b when the second transport members 53a, 53b, 54a, and 54b are opened inward, that is, when the link portions 60a and 60b are separated from each other is restricted.

  Further, the moving members 55a and 55b are formed with first guide holes 88a and 88b through which the rotation shaft portions 69a and 69b of the first guide pieces 58a and 58b of the first transport members 53a and 53b are inserted. In addition, second guide holes 88c and 88d are formed through which the rotation shaft portions 70a and 70b of the second guide pieces 63a and 63b of the second transport members 54a and 54b are inserted. The first and second guide holes 88a, 88b, 88c, and 88d are elongated holes having a substantially arc shape, and the rotation shaft portions 69a, 69b, 70a, and 70b are the first and second guide holes 88a and 88b. , 88c, 88d. The first guide holes 88a and 88b are configured so that the first transport members 53a and 53b connected to the second transport members 53a and 53b via the link portions 60a and 60b rotate around the rotation shaft portions 69a and 69b. The second guide holes 88c and 88d are formed as long holes having a substantially arc shape so as to be movable, and the second guide holes 88c and 88d are connected to the first transport members 54a and 54b via the link portions 60a and 60b. In order to enable the members 54a and 54b to rotate around the rotation shaft portions 70a and 70b, they are formed as long holes having a substantially arc shape.

  The first rotation shafts 69a and 69b inserted through the first guide holes 88a and 88b serve as rotation fulcrums when the first transport members 53a and 53b rotate. The first guide holes 88a and 88b move within the range. Further, the second rotation shaft portions 70a and 70b inserted through the second guide holes 88c and 88d serve as rotation fulcrums when the second transport members 54a and 54b rotate, and this rotation fulcrum. The part moves within the range of the second guide holes 88c and 88d.

  Furthermore, on the moving members 55a and 55b, restricting protrusions 89a and 89b are formed that restrict the amount of movement of each other by abutting against the other moving members 55a and 55b. Further, a locking piece 90a is formed at the tip of the long portion 81b of one moving member 55b, and a tension coil spring having one end locked to the locking piece 90b of the base 52 is formed on the locking piece 90a. 90 is locked. The tension coil spring 90 urges the moving members 55 a and 55 b in the direction of arrow C in FIGS. 8 and 9 that are close to each other, and functions as an auxiliary spring for the tension coil spring 68.

  That is, the transport mechanism 51 configured as described above includes the first transport rollers 56a and 56b and the second transport rollers 65a and 65b on both sides of the first transport members 53a and 53b. By rotating about the rotation shafts 69a and 69b of the first transport members 53a and 53b inserted through the first guide holes 88a and 88b of the 55b as a rotation fulcrum, the optical disk is similar to the transport mechanism 7 described above. 2 can be conveyed.

  The second conveying members 54a and 54b are provided with second conveying rollers 65a and 65b and third conveying rollers 61a and 61b at both ends. When the optical disk 2 is transported by the second transport members 54a and 54b, the second transport rollers 65a and 65b function as the first transport rollers, and the third transport rollers 61a and 61b function as the second transport rollers. To do. Then, the second transport members 54a and 54b use the pivot shafts 70a and 70b of the second transport members 54a and 54b inserted into the second guide holes 88c and 88d of the moving members 55a and 55b as pivot fulcrums. By rotating, the optical disc 2 can be transported like the transport mechanism 7 described above.

  That is, the transport mechanism 51 is provided with a transport roller at each end of the first transport members 53a and 53b and the second transport members 54a and 54b, and the first transport members 53a and 53b and the second transport member 54a. , 54b are connected by the link portions 60a, 60b so that the transport distance of the optical disk 2 is increased.

  In the transport mechanism 51, a drive mechanism 91 is provided on the first transport member 53b and the second transport member 54b side, and the first to third transport rollers 56b, 61b, and 65b are rotationally driven by the drive mechanism 91. Is done. The drive mechanism 91 includes a first drive gear 92 that is coaxial with the first transport roller 56a, a second drive gear 94 that is coaxial with the second transport roller 65b, and a first drive gear 94 that is coaxial with the third transport roller 61b. 3 drive gears 93. Further, the first drive gear 92 and the second drive gear 94 are connected by a first gear train 95 composed of a plurality of gears supported by a support shaft 95a, and the third drive gear 93 is connected to the third drive gear 93. The second drive gear 94 is connected by a second gear train 96 composed of a plurality of gears that are supported by a support shaft 96a. One gear 95b constituting the first gear train 95 is connected to a drive source 97 such as a drive motor. The first to third transport rollers 56b, 61b, 65b that are rotationally driven by the drive mechanism 91 as described above are always rotationally driven in the same direction and at the same speed.

  Next, the operation of the transport mechanism 51 configured as described above will be described. As shown in FIG. 8, when the optical disk 2 is not transported, the first and second transport members 53a, 53b, 54a, 54b are in an open state in which the link portions 60a, 60b are close to each other. 8 and 10 move in the direction of arrow C in FIG. 8 and FIG. 10 and move to positions closest to each other, and the first and second transport rollers 56a, 56b, 61a, and 61b move to FIGS. It moves in the direction of the inside out arrow C and is in the most separated state. At this time, the distance between the first and second transport rollers 56a, 56b, 61a, 61b is such that at least the optical disk 2b having a diameter of 8 cm can be sandwiched.

  When the optical disc 2 is inserted from the disc insertion slot 4, the outer peripheral surface of the inserted optical disc 2 is engaged and held in the engagement grooves 57a and 57b of the first transport rollers 56a and 56b. Then, the optical disk 2 is gradually drawn into the apparatus main body 3 according to the rotation of the first transport rollers 56a and 56b. In the initial stage of transport of the optical disc 2, the first transport members 53a and 53b are arranged so that the tension coil spring 68 is rotated by using the pivot shafts 69a and 69b inserted into the first guide holes 88a and 88b of the moving members 55a and 55b. 10 is rotated in the direction of arrow B in FIG. 10, and the first transport rollers 56a and 56b are separated according to the outer shape of the optical disk 2 to be pulled. At the same time, the moving members 55a and 55b that move in the opposite directions by the connecting gear 83 move in the direction of the opposite arrow C in FIGS. 8 and 10 that are separated from each other against the biasing force of the tension coil springs 68 and 90. As a result, the optical disk 2 is gradually drawn into the apparatus main body 2 by the first transport rollers 56a and 56b and delivered to the second transport rollers 65a and 65b.

  Then, in the middle of the conveyance of the optical disk 2, the first conveyance rollers 56a and 56b push the optical disk 2 in the direction of the second conveyance rollers 65a and 65b, and the second conveyance rollers 65a and 65b pull the optical disk 2 in. Act on. When the maximum width portion of the optical disc 2 passes through the first transport rollers 56a and 56b and is delivered to the second transport rollers 65a and 65b, the first and second connected by the link portions 60a and 60b. As shown in FIG. 11, the conveying members 53a, 53b, 54a, 54b resist the urging force of the tension coil spring 68, and are centered on the rotation shaft portions 69a, 69b, 70a, 70b in the direction indicated by the arrow B in FIG. And the link portions 60a and 60b are separated from the outwardly open state to the inwardly open state, and the maximum width portion of the optical disc 2 is positioned on the second transport rollers 65a and 65b. At the same time, the second transport rollers 65 a and 65 b are in the most separated state, and the first and third transport rollers 56 a, 56 b, 61 a and 61 b move in the approaching direction according to the outer shape of the optical disc 2. .

  Next, the second transport rollers 65a and 65b push the optical disk 2 in the direction of the third transport rollers 61a and 61b, and the third transport rollers 61a and 61b act to pull the optical disk 2 and the second transport rollers 61a and 61b. The conveyance rollers 65a and 65b deliver the optical disk 2 to the third conveyance rollers 61a and 61b. When the maximum width portion of the optical disc 2 comes, the first and second transport members 53a, 53b, 54a, 54b connected by the link portions 60a, 60b are rotated by the rotating shaft portion 69a by the urging force of the tension coil spring 68. , 69b, 70a, and 70b are rotated in the direction of the arrow B in FIG. 11 to change from an inner opening state to an outer opening state, and the third transport rollers 61a and 61b are most separated.

  When the third conveyance rollers 61a and 61b reach the end of conveyance in which the optical disk 2 is sent in the direction of arrow A in FIG. 11, the moving members 55a and 55b moved in opposite directions by the connecting gear 83 are biased by the tension coil springs 68 and 90. To move in the direction of arrow C in FIG. As a result, the optical disk 2 is pulled out in the direction of arrow A in FIG. 12 by the third transport rollers 61a and 61b.

  When the optical disk 2 is transported from the third transport rollers 61a and 61b to the first transport rollers 56a and 56b, the reverse operation is performed.

  The transport mechanism 51 as described above connects the first and second transport members 53a, 53b, 54a, and 54b via the link portions 60a and 60b, and the second transport rollers 65a and 65b are connected to the link portions 60a and 60b. By providing this, the transport distance of the optical disk 2 can be extended. That is, in the above example, the two transport members 53a, 53b, 54a and 54b are used. However, the transport distance of the optical disc 2 can be further increased by connecting the further transport members via the further link portions 60a and 60b. Can be extended.

  The transport mechanism 51 transports the optical disc 2 between the disc insertion slot 4 and the stocker 5 and between the stocker 5 and the reproduction unit 6, and also passes through the stocker 5 from the insertion slot 4 to the reproduction unit 6. You may make it convey a long distance.

  Furthermore, another example of the transport mechanism 7 to which the present invention is applied will be described. As shown in FIGS. 13 and 14, the transport mechanism 101 includes a base 102, transport members 103 a and 103 b for transporting the optical disc 2, and movement for moving the transport members 103 a and 103 b to the base 102. Members 104a and 104b are provided.

  The transport members 103a and 103b are provided with first transport rollers 105a and 105b for transporting the optical disc 2 at one end, and second transport rollers 106a and 106b at the other end. The first and second transport rollers 105a, 105b, 106a, and 106b are formed of a material having a large frictional force, such as a rubber roller, so as to be surely in contact with the outer peripheral surface of the transported optical disk 2. The first and second transport rollers 105a, 105b, 106a, and 106b are formed with engagement grooves 107 on the outer peripheral surface for engaging the outer peripheral edge of the optical disc 2. The first and second transport rollers 105a, 105b, 106a, 106b are rotatably attached to the end portions of the transport members 103a, 103b by screws 108 that constitute a rotation shaft. The first and second transport rollers 105a, 105b, 106a, 106b are provided with coaxial first and second gear portions 109a, 109b, 110a, 110b. The first and second gear portions 109a, 109b, 110a, and 110b are wound around endless belts 111a and 111b, and the first conveyance roller 105a, the second conveyance roller 106a, the first conveyance roller 105b, and the second The transport roller 106b can be rotated in the same direction and at the same speed.

  The conveying members 103a and 103b, to which the first and second rotating rollers 105a, 105b, 106a, and 106b are attached at both ends, are formed with shaft holes 112a and 112b each having a long hole substantially at the center in the longitudinal direction. Has been. The shaft holes 112a and 112b are inserted into the pivot shafts of the moving members 104a and 104b, thereby becoming pivotal fulcrum portions. The conveying members 103a and 103b are moved in the arrow B direction and the counter arrow B direction in FIG. Rotate.

  The moving members 104a and 104b to which the conveying members 103a and 103b to which the first and second rotating rollers 105a, 105b, 106a and 106b are attached at both ends are attached are formed in a substantially L shape. Rotating shaft portions 113a and 113b are formed on the short sides of the moving members 104a and 104b. The rotating shaft portions 113a and 113b are inserted into shaft holes 112a and 112b formed by the long holes of the conveying members 103a and 103b. Screw holes 114a and 114b are formed in the rotating shaft portions 113a and 113b, and the conveying members 103a and 103b are fixed to the moving members 104a and 104b by tightening set screws 115a and 115b to the screw holes 114a and 114b. It is attached.

  First rotation restricting portions 121a and 121b for restricting the rotation of the conveying members 103a and 103b attached to the rotation shaft portions 113a and 113b and a second rotation are provided on the short sides of the moving members 104a and 104b. Restricting portions 122a and 122b are formed. The first rotation restricting portions 121a and 121b restrict the rotation of the conveying members 103a and 103b when the first conveying rollers 105a and 105b move in a direction opposite to the arrow B in FIG. The rotation restricting portions 122a and 122b restrict the rotation of the conveying members 103a and 103b when the second conveying rollers 106a and 106b move in the direction of arrow B in FIG.

  Rack gears 116a and 116b are formed on the inner side surfaces of the long sides of the moving members 104a and 104b. The rack gears 116a and 116b are engaged with a connecting gear 118 that is rotatably attached to the annular protrusion 117 of the base 102, whereby the moving members 104a and 104b are moved toward and away from each other in the direction indicated by the arrow C in FIG. The linear movement is made in the C direction, that is, in the opposite direction.

  In order to guide the movement of the moving members 104a and 104 in the direction of arrow C and the direction of the opposite arrow C in FIG. 13 orthogonal to the transport direction of the optical disc 2, the first to third guide protrusions 123a are provided on the moving members 104a and 104b. , 123b, 124a, 124b, 125a, 125b are formed, and the respective guide protrusions 123a, 123b, 124a, 124b, 125a, 125b are first to third guide holes 126a, 126b, 127a formed in the base 102, respectively. , 127b, 128a, 128b. Thereby, the moving members 104a and 104b to which the conveying members 103a and 103b to which the first and second rotating rollers 105a, 105b, 106a and 106b are attached at both ends are orthogonal to the conveying direction of the optical disc 2. In FIG. 13, linear movement is possible in directions opposite to each other in the direction of arrow C and the direction of counter arrow C.

  In the base 102, guide holes 129a and 129b with which the second transport rollers 106a and 106b are engaged are further formed in parallel with the first to third guide holes 126a, 126b, 127a, 127b, 128a, and 128b. ing. By forming the shaft holes 112a and 112b through which the rotation shaft portions 113a and 113b of the moving members 104a and 104b are inserted as long holes, the second transport rollers 106a and 106b are straight along the guide holes 129a and 129b. It becomes possible to move.

  The conveying members 103a and 103b are urged in a direction approaching each other by a tension coil spring 130 serving as an urging member. Specifically, one end of the tension coil spring 130 is locked to the locking piece 130a of the conveying member 103a, and the other end is locked to the locking piece 130b of the conveying member 103b, so that the conveying members 103a and 103b are connected to each other. It is energized in the direction of arrow C in FIG.

  The operation of the transport mechanism 101 configured as described above will be described. As shown in FIG. 15, before the optical disk 2 is inserted, the first conveying rollers 105a and 105b are urged in the direction of arrow C in FIG. It is located at an interval that can contact the outer peripheral surface of 2b.

  When the optical disk 2 is inserted from the disk insertion slot 4, the transport mechanism 101 drives a driving mechanism (not shown) and is connected by the endless belts 111a and 111b in the direction in which the optical disk 2 is pulled into the apparatus main body 3. The second transport rollers 105a, 105b, 106a, 106b are rotated in the same direction at the same speed. The optical disc 2 inserted from the disc insertion opening 4 comes into contact with the first transport rollers 105a and 105b and is gradually drawn in the direction of arrow A in FIG. In the initial stage of conveyance, the first conveyance rollers 105a and 105b gradually spread from positions close to each other. Then, as the first transport rollers 105a and 105b gradually pull the optical disc 2, the transport members 103a and 103b follow the outer shape of the optical disc 2 in the direction of the arrow C in FIG. The conveying members 103a and 103b are rotated in the direction of the arrow B in FIG. Thus, the first transport rollers 105a and 105b draw the optical disc 2 into the apparatus main body 3 while moving in directions away from each other.

  When the optical disk 2 is pulled in a predetermined amount and the middle width of the optical disk 2 reaches the middle between the first transport rollers 105a and 105b and the second transport rollers 106a and 106b, the distance between the first transport rollers 105a and 105b The distance between the first and second transport rollers 106a and 106b is substantially the same as shown in FIG. 16, and the optical disk 2 is held by the first and second transport rollers 105a, 105b, 106a, and 106b. At this time, the second conveying rollers 106a and 106b are guided by the guide holes 129a and 129b by the rotation shaft portions 113a and 113b moving through the shaft holes 112a and 112b, and are moved in the direction opposite to the arrow C in FIG. Move straight. When the optical disk 2 is further drawn in the direction of arrow A in FIG. 15 by the first and second transport rollers 105a, 105b, 106a, 106b, the second transport rollers 106a, 105b are moved from the first transport rollers 105a, 105b. Passed to 106b.

  Then, at the end of conveyance, the outer peripheral surface of the optical disc 2 is separated from the second conveyance rollers 105 a and 105 b, and then the second conveyance rollers 106 a and 106 b gradually follow the outer shape of the optical disc 2 by the urging force of the tension coil spring 130. The second transport rollers 106a and 106b are sent to the stocker 5 and the reproducing unit 6. At this time, when the second transport rollers 106a and 106b are in contact with the maximum width portion of the optical disc 2, the rotation shaft portions 113a and 113b move through the shaft holes 112a and 112b, thereby guiding the base 102. Guided by the holes 129a and 129, it moves linearly in the direction of arrow C in FIG.

  When the optical disc 2 in the reproducing unit 6 is transported to the stocker 5 or the disc insertion slot 4, the reverse operation of the above operation is performed.

  In the transport mechanism 101 as described above, the second transport rollers 106a and 106b are linearly moved by the guide holes 129a and 129b, so that the stocker 5 is positioned closer to the second transport rollers 106a and 106b. Further, the reproducing unit 6 can be provided, and the overall size can be reduced.

It is a perspective view of the disc conveying apparatus to which the present invention is applied. It is a top view explaining the conveyance mechanism used for the said disk conveyance apparatus. It is a figure explaining the conditions at the time of conveying an optical disk with the 1st and 2nd conveyance roller. It is a top view explaining the conveyance mechanism used as the premise of the conveyance mechanism to which this invention is applied. It is a top view explaining the other example of the conveyance mechanism used as the premise of the conveyance mechanism to which this invention is applied. FIG. 6 is a diagram illustrating positions of first and second transport rollers when the optical disk is transported from a first position to a second position using the transport mechanism illustrated in FIG. 5. It is a figure explaining the position of the 1st and 2nd conveyance roller at the time of conveying an optical disk from a 1st position to a 2nd position using the conveyance mechanism shown in FIG. It is a perspective view explaining the other example of the disc conveying apparatus to which this invention is applied. It is a disassembled perspective view of the disc conveying apparatus shown in FIG. FIG. 10 is a schematic diagram for explaining the operation of the transport mechanism shown in FIGS. 8 and 9 and shows an initial stage of transport of the optical disc. FIG. 10 is a schematic diagram for explaining the operation of the transport mechanism illustrated in FIGS. 8 and 9 and is a diagram illustrating a middle stage of transport of the optical disc. FIG. 10 is a schematic diagram for explaining the operation of the transport mechanism shown in FIGS. 8 and 9 and shows the end of transport of the optical disc. It is a perspective view which shows the further another example of the disc conveying apparatus to which this invention is applied. It is a disassembled perspective view of the disc conveying apparatus shown in FIG. It is the schematic explaining operation | movement of the conveyance mechanism shown in FIG.13 and FIG.14, and is a figure which shows the conveyance initial stage of an optical disk. FIG. 15 is a schematic diagram for explaining the operation of the transport mechanism illustrated in FIGS. 13 and 14 and is a diagram illustrating an intermediate stage of transport of the optical disc. It is the schematic explaining operation | movement of the conveyance mechanism shown in FIG.13 and FIG.14, and is a figure which shows the conveyance final stage of an optical disk.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Disc conveyance apparatus, 2 Optical disk, 3 Apparatus main body, 4 Disc insertion slot, 5 Stocker, 6 Playback part, 7 Conveyance mechanism, 21a, 21b 1st conveyance roller, 22a, 22b 2nd conveyance roller, 23a, 23b Member, 24a, 24b rotation support member, 28a, 28b rotation fulcrum,

Claims (3)

A transport means for transporting the inserted recording or reproducing disk;
The transport means is provided spaced apart in the same direction as the transport direction of the disk, and a pair of transport rollers that contact the outer peripheral surface of the transported disk and rotate to transport the disk, and the pair of transport rollers are attached. Provided on the conveyance member between the pair of conveyance rollers, and a rotation fulcrum part that moves each conveyance roller in a direction approaching and separating from the outer peripheral surface of the disk that conveys the conveyance roller, and conveys the conveyance member And a biasing member biasing in the direction of the outer peripheral surface of the disk.   2. The conveying means includes a plurality of connecting members, the plurality of connecting members are rotatably connected by link portions at end portions, and the conveying rollers are provided at both ends of each conveying member. The disk conveying apparatus as described. The disk transport apparatus according to claim 1, wherein the transport unit includes a guide unit in which one transport roller linearly moves in a direction orthogonal to the transport direction of the disk.

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