JP2006120278A - Disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk device capable of correcting the attitude of a small-diameter disk toward a center line when the small-diameter disk is loaded in a attitude shifted from the center line, and preventing the start of a clamping operation in the shifted state of the small-diameter disk. <P>SOLUTION: A detection lever 21 having a right side detection projection 23 formed thereon includes a regulation moving member 60 disposed before a support point shaft 25 to be freely turned, and a regulation projection 62 is formed on this regulation moving member 60. A holding recess 71 is formed to hold the regulation projection 62 in a regulation position when the detection lever 21 is turned clockwise. When the small-diameter disk Ds is loaded in a state of being shifted to the right side, it abuts on the regulation projection 62 and the attitude is corrected toward the center line O-O. When a large-diameter disk is loaded, the regulation projection 62 is pushed by the outer peripheral edge of the large-diameter disk and retreats in a right direction. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a disk device in which both a small-diameter disk and a large-diameter disk can be loaded, and more particularly to a disk device that can correct the positional deviation of a small-diameter disk when the small-diameter disk is loaded with a positional deviation from a center line.

  As an in-vehicle disk device loaded with a compact disk (CD), a digital versatile disk (DVD), etc., one that can load both a large-diameter disk having a diameter of 12 cm and a small-diameter disk having a diameter of 8 cm can be loaded. in use.

  In the disk device described in Patent Document 1 and the like below, a pair of detection protrusions are opposed to each other at an interval narrower than the diameter of the small-diameter disk inside the insertion slot for inserting the disk. When a disk is inserted from the insertion slot and this disk is carried into the apparatus, the outer peripheral edge of the disk hits the detection protrusion, and the detection protrusion slides on the outer peripheral edge as the disk is loaded. The interval is widened.

  A pair of positioning protrusions are provided in front of the rotational drive means in which the center hole of the disk is installed, in the carrying direction, and the positioning protrusions are installed at two positions according to the spread distance of the pair of detection protrusions. The

  That is, when the small-diameter disk is loaded, the positioning projection is installed at a position where the small-diameter disk can be positioned, and when the outer peripheral edge of the loaded small-diameter disk hits the positioning projection, the center hole of the small-diameter disk is the rotational drive means. Positioned on the rotating part. When the large-diameter disk is carried in, the interval between the detection protrusions is further widened, and the positioning protrusion is installed at a position where the large-diameter disk can be positioned in conjunction with the expansion of the detection protrusion. When the outer peripheral edge of the large-diameter disk hits the positioning protrusion, the center hole of the large-diameter disk is positioned at the rotating portion of the rotation driving means.

  In addition, a loading detection means that is operated by one of the pair of positioning protrusions is provided in the apparatus. When the center hole of the small-diameter disk is positioned at the rotating portion, one positioning protrusion is pushed by the small-diameter disk, and the loading detection means is operated by this positioning protrusion. Even when the center of the large-diameter disk is positioned on the rotating part, the one positioning protrusion is pushed by the large-diameter disk and the loading detection means is operated.

The control unit recognizes that the center of the small-diameter disk or the large-diameter disk is positioned at the rotating unit when the loading detection unit is operated, and, for example, the disk clamping operation to the rotating unit is started.
JP 2003-228901 A

  In this type of disk device, when the small-diameter disk is carried in by the conveying means, the center of the small-diameter disk can be carried in a position shifted in the left or right direction from the center line passing through the rotation center of the rotation driving means. There is sex. The disk device described in Patent Document 1 and the like is provided with a pair of positioning projections in front of the rotational driving means in the loading direction. The small-diameter disk rotates with either one of the positioning projections as a fulcrum, so that the center hole can be corrected so as to coincide with the rotating portion of the rotation driving means.

  However, if the small-diameter disk is loaded in a position shifted to the same side where the loading detection means is provided with respect to the center line, the small-diameter disk is corrected by the small-diameter disk before being corrected as described above. There is a possibility that the loading detection means is pushed. When the loading detection means is pushed, there arises a problem that the disk clamping operation is started when the center of the small-diameter disk is not positioned at the rotating part.

  Further, if a restricting protrusion is provided at a position that is biased toward the side on which the loading detection means is provided with respect to the center line, the restriction loaded before the loaded disc is operated by a disc that has been shifted in position. The movement posture is changed by hitting the protrusion, so that the center hole of the disk can be positioned in the rotating portion. However, if the restriction protrusion is provided, when the large-diameter disk is loaded, the restriction protrusion becomes an obstacle to the loading path of the large-diameter disk, and both the large-diameter disk and the small-diameter disk can be loaded. become unable.

  The present invention solves the above-described conventional problems, and when a small-diameter disk is loaded from a position deviated from the center line, the small-diameter disk can be corrected to a position where the small-diameter disk can be positioned on the rotational drive means, and An object of the present invention is to provide a disk device that can carry in a large-diameter disk.

The present invention includes an insertion part into which both a small diameter disk and a large diameter disk can be inserted, a conveying means for carrying in and carrying out the disk inserted from the insertion part, the small diameter disk carried by the conveying means, and the large diameter disk. In a disk device having a rotational drive means to which any diameter disk can be mounted,
When the imaginary line extending in the disk loading direction through the rotation center of the rotation drive means is the center line,
A pair of detection projections positioned on both sides of the center line, the interval between which is set to a standby position narrower than the diameter of the small-diameter disc when waiting for the insertion of the disc, and the detection projection A detection lever rotatably supported via a fulcrum located in front of the detection protrusion with respect to the detection protrusion, and an urging means for urging the detection lever in a direction to install the detection protrusion at a standby position;
A small-diameter disk installation position for positioning the small-diameter disk on the rotational drive means according to the amount of rotation of the detection lever, at a position facing the outer peripheral edge of the disk in front of the rotational drive means in the loading direction; And a positioning projection installed at a large-diameter disk installation position for positioning the rotary drive means,
A regulation moving member, a regulation projection that is provided on the regulation movement member and faces the outer peripheral edge of the disk, and a holding unit that holds the regulation projection at the regulation position are provided at positions laterally separated from the center line. And
When the small-diameter disk is loaded with its center shifted from the center line, the outer peripheral edge of the small-diameter disk hits the restricting projection held at the restricting position, and the deviation from the center line is restricted, and the large-diameter disk is loaded. When this is done, the regulating projection is pushed to the retracted position away from the holding means and the center line by being pushed by the outer peripheral edge thereof.

  In the disk device, when the small-diameter disk is loaded with a deviation from the center line, the small-diameter disk is regulated by the regulating projection, and the center of the small-diameter disk can be positioned on the rotation driving means. When a large-diameter disk is carried in, the restricting protrusion can be retracted by being pushed by the large-diameter disk, so that the restricting protrusion does not become an obstacle to carrying in the large-diameter disk.

  For example, in the present invention, the restriction moving member is supported by the detection lever so as to be rotatable in front of the fulcrum in the loading direction.

  When the restriction moving member is supported by the detection lever, when the large-diameter disk pushes the detection protrusion and the detection lever rotates, an operation of detaching the restriction protrusion from the holding means is performed using this rotation operation. As a result, the restriction projection can be moved to the retracted position more reliably.

  In the present invention, the restriction moving member may be provided movably on a portion other than the detection lever, for example, on the ceiling of the housing.

  In the present invention, it is preferable that an urging member for holding the restricting protrusion on the holding means when the large-diameter disk is carried out is provided.

  When the urging member is provided, the restricting projection can be reliably returned to the restricting position when the large-diameter disk is carried out.

  For example, according to the present invention, the holding means is a holding recess that is located laterally away from the center line and opens in the loading direction.

  Furthermore, the present invention is provided with a load detecting means for detecting completion of loading of a disk, which is operated by carrying in a small-diameter disk at a position away from the center line in one direction, and the restricting protrusion is located on the center line. On the other hand, it is particularly effective in the case where it is arranged closer to the insertion portion than the positioning projection at the same side as the loading detection means and at the small-diameter disk installation position.

  As described above, when the loading detection means exists on the side away from the center line, even if the small-diameter disk is loaded in the same direction as the loading detection means, the small-diameter disk is restricted by the restriction protrusion. Then, it is corrected to a position where it can be positioned on the rotation driving means. Therefore, it is possible to prevent a problem that the loading detection unit is erroneously operated by the small-diameter disk loaded in a biased manner.

  According to the present invention, when a small-diameter disk is loaded while being shifted from the center line to one side, the loading posture is corrected, and the small-diameter disk can be reliably positioned on the rotation driving means. Further, when the large-diameter disk is carried in, the restricting projection does not prevent the carrying-in.

  1 is a cross-sectional view showing a vehicle-mounted disk device according to an embodiment of the present invention from the side, and FIG. 2 is a bottom view of a mechanism provided on a ceiling portion of the disk device shown in FIG. FIGS. 3, 3 and 4 show the guiding operation of the small-diameter disk in the bottom view. 5 to 7 show the guiding operation of the large-diameter disk in the bottom view.

  As shown in FIG. 1, the disk device 1 has a housing 2 that can be stored in an external case of 1 DIN size. The housing 2 has a lower chassis 3 and an upper chassis 4, and the lower chassis 3 and the upper chassis 4 are combined to form a box. In the disk device 1, the Y1 direction shown in FIG. 1 is the front in the disk loading direction, and the Y1 direction may be expressed as the front in the following. In addition, the Y2 direction is the disc carry-out direction, and the Y2 direction may be expressed as the rear in the following.

  The end face on the Y2 side of the housing 2 is a surface 5, and an insertion port 6 serving as a disc insertion portion is opened in a slit shape on the surface 5. This insertion slot 6 has an opening width dimension into which both a small diameter disk Ds having a diameter of 8 cm and a large diameter disk Dl having a diameter of 12 cm can be inserted.

  A rotation driving means 7 is provided inside the housing 2. The rotation driving means 7 has a spindle motor 8 and a turntable 9 which is a rotating part fixed to the rotation shaft of the spindle motor 8. The upper chassis 4 is rotatably provided with a clamper 10 that faces the turntable 9. The upper chassis 4 is provided with a clamp mechanism. When the center hole of the small-diameter disk Ds or the center hole of the large-diameter disk Dl coincides with the turntable 9, the clamp mechanism operates and the disk is turned into a turntable. 9 and the clamper 10 are clamped by the rotation driving means 7.

  FIG. 2 is a bottom view of the upper chassis 4 viewed from the direction of arrow II. Os shown in FIG. 2 is the rotation center of the clamper 10 and the rotation center of the turntable 9. A virtual line extending in the disk loading direction (Y1 direction) through the rotation center Os is a center line OO.

  A conveying means 11 is provided between the insertion port 6 and the rotation driving means 7. The conveying means 11 is provided with a conveying roller 12 and a sliding member 13 facing above the conveying roller 12. The transport roller 12 is supported by a transport arm (not shown). When the transport arm rotates, the transport roller 12 is pressed against the sliding member 13 via a spring force, and the transport roller 12 and the sliding member 13 are The disc can be held between the two. When the transport roller 12 is rotated in this sandwiched state, the disk is carried forward and carried backward. In addition, after the center hole of the disk is mounted on the turntable 9, the transport arm rotates, and the transport roller 12 descends and separates from the lower surface of the disk.

  As shown in FIG. 2, a detection lever 21 is provided on the lower surface of the upper chassis 4 on the right side of the center line OO, and a detection protrusion 23 is provided at the rear end (Y2 direction) of the detection lever 21. Is provided. A detection lever 22 is also provided on the left side of the center line OO, and a detection protrusion 24 is provided at the rear end of the detection lever 22. As shown in FIG. 1, the detection protrusion 23 and the detection protrusion 24 are close to and opposed to the insertion opening 6 between the insertion opening 6 and the conveying roller 12, and the small-diameter disk Ds inserted from the insertion opening 6. Alternatively, the large-diameter disk Dl always comes into contact with the detection protrusion 23 and the detection protrusion 24.

  The right detection lever 21 is rotatably supported on the ceiling surface 4 a of the upper chassis 4 by a fulcrum shaft 25 positioned in front of the detection protrusion 23. Similarly, the left detection lever 22 is rotatably supported on the ceiling surface 4 a by a fulcrum shaft 26 positioned in front of the detection protrusion 24. The detection lever 21 and the detection lever 22 rotate along a plane parallel to the ceiling surface 4a, and as a result, the facing distance between the detection projection 23 and the detection projection 24 can be changed.

  The right detection lever 21 is provided with a connecting shaft 27 behind the fulcrum shaft 25, and the left detection lever 22 is provided with a connecting shaft 28 ahead of the fulcrum shaft 26. One end portion of the connecting member 29 is rotatably connected to the connecting shaft 27, and the other end portion is rotatably connected to the connecting shaft 28. As a result, the detection lever 21 and the detection lever 22 can be rotated in opposite directions in synchronization with each other while being constrained to each other.

  A shaft 32 is provided at the front end of the right detection lever 21 and in front of the fulcrum shaft 25, and the positioning lever 31 is rotatably supported by the detection lever 21 by the shaft 32. Similarly, a shaft 38 is provided at the front end of the left detection lever 22 and in front of the fulcrum shaft 26, and the positioning lever 33 is rotatably supported by the detection lever 22 via the shaft 38.

  A positioning projection 34 is provided at the front end of the positioning lever 31, and a positioning projection 35 is provided at the front end of the positioning lever 33. As shown in FIG. 1, the positioning protrusion 34 and the positioning protrusion 35 are opposed to a position corresponding to the outer peripheral edge of the small diameter disk Ds or the large diameter disk Dl that is carried into the housing 1.

  A spring 36, which is a biasing means, is hung between the right positioning lever 31 and the ceiling surface 4a, and the tensioning elastic force of the spring 36 causes the positioning lever 31 to rotate counterclockwise (CCW) with the shaft 32 as a fulcrum. ) And the right detection lever 21 is urged to rotate clockwise (CW) via the fulcrum shaft 25. A spring 37 is hung between the left positioning lever 33 and the ceiling surface 4a, and the tensioning elastic force of the spring 37 causes the positioning lever 33 to be urged to rotate clockwise (CW) about the shaft 38 as a fulcrum. In addition, the detection lever 22 is urged to rotate counterclockwise (CCW) with the fulcrum shaft 26 as a fulcrum.

  As shown in FIG. 2, the clockwise limit (CW) rotation limit position of the detection lever 21 is determined by a stopper 39a provided on the ceiling surface 4a, and the detection lever 22 is rotated counterclockwise (CCW). The limit position is also determined by the stopper 39b. As a result, in the standby state in which no disc is inserted, the detection projection 23 and the detection projection 24 are set at a standby position where the facing interval W is narrower than the diameter of the small-diameter disc Ds.

  As shown in FIG. 2, guide portions 40 and 41 are provided on the ceiling surface 4 a of the upper chassis 4 at positions ahead of the rotation driving means 7. The guide portions 40 and 41 are formed by making a hole in the ceiling surface 4a at a position equidistant to the left and right across the center line OO.

  In the guide portion 40, a small-diameter disk setting portion 42 extending in the rear direction (Y2 direction) is formed in a concave shape. The edge of the guide portion 40 on the center line OO side is a sliding guide portion 43 that is continuous with the small-diameter disk setting portion 42. Further, a large-diameter disk setting portion 44 is formed in a concave shape at a position away from the sliding guide portion 43 to the right side. Similarly, the left guide part 41 is also provided with a concave small-diameter disk setting part 45, a sliding guide part 46 and a concave large-diameter disk setting part 48.

  The positioning protrusion 34 and the positioning protrusion 35 extend downward from the lower surfaces of the positioning levers 31 and 33 to face the loaded disc, and the positioning protrusion 34 and the positioning protrusion 35 are upper surfaces of the positioning levers 31 and 33. The extended portion enters the guide portion 40 and the guide portion 41, and the small-diameter disk setting portions 42 and 45, the sliding guide portions 43 and 46, and the large-diameter disk setting portion. 44, 48.

  A loading detection means 50 is provided on the right side of the center line OO and ahead of the detection lever 21. The loading detection means 50 is provided with a detection operation member 51. The detection operation member 51 is rotatably supported on the ceiling surface 4 a of the upper chassis 4 by a support shaft 52. The detection operation member 51 is made of a synthetic resin material, and an elastic piece 53 is integrally formed on the right side thereof. The elastic piece 53 is hooked on a hooking portion 54 provided on the ceiling surface 4a, and the elastic member 53 causes the detection operation member 51 to counterclockwise (CCW) with the support shaft 52 as a fulcrum by the elastic restoring force. Is being energized. The detection operation member 51 is the position where the posture shown in FIG. 2 is most rotated in the counterclockwise direction, and is restricted by a stopper (not shown) so that it cannot be rotated further counterclockwise at this position.

  A small-diameter pressing portion 55 is formed to protrude from the left end portion of the detection operation member 51. As shown in FIG. 2, the small-diameter pressing portion 55 faces the front of the positioning protrusion 34 in a state where the right-side positioning protrusion 34 is positioned in the small-diameter disk setting portion 42 and positioned at the small-diameter disk installation position. ing. When the positioning protrusion 34 is pushed by the outer peripheral edge of the small-diameter disk Ds, the small-diameter pressing portion 55 is pressed through the positioning protrusion 34, so that the detection operation member 51 rotates in the clockwise direction. ing.

  A large-diameter pressing portion 56 is formed in a concave shape at the front end portion of the detection operation member 51. As shown in FIG. 7, when the right positioning protrusion 34 is positioned in the large diameter disk setting portion 44 of the guide portion 40, the positioning protrusion 34 enters the large diameter pressing portion 56. At this time, the large-diameter pressing portion 56 is pressed by the positioning protrusion 34, and the detection operation member 51 is rotated in the clockwise direction (CW).

  A detection unit 57 is provided at the right end of the detection operation member 51, and a detection switch 58 is provided on the ceiling surface 4 a of the upper chassis 4. When the detection operation member 51 rotates clockwise (CW), the detection switch 57 operates the detection switch 58. A control circuit (not shown) provided in the housing 2 detects that the detection switch 58 has been operated, so that the center hole of the small diameter disk Ds or the large diameter disk Dl is positioned on the turntable 9. It is recognized that it is in a completed state.

  As shown in FIG. 2, a regulation moving member 60 is provided on the same side as the loading detection unit 50 with respect to the center line OO and behind the loading detection unit 50 (Y2 direction). A support shaft 61 is provided at the end of the right detection lever 21 in front of the fulcrum shaft 25, and the restriction moving member 60 is rotatably supported by the support shaft 61. The regulation moving member 60 is provided with a regulation projection 62 at a position away from the support shaft 61. As shown in FIG. 1, the restricting projection 62 faces a position where the outer peripheral edges of the small-diameter disk Ds and the large-diameter disk Dl loaded by the conveying force of the conveying means 11 can hit.

  The restriction moving member 60 is formed of a synthetic resin material, and an elastic piece 63 as an urging member is integrally formed at a position opposite to the restriction protrusion 62 with the support shaft 61 interposed therebetween.

  As shown in FIG. 2, a guide plate 70 made of a synthetic resin material is fixed on the right side of the center line OO with a gap from the ceiling surface 4a. The detection lever 21, the positioning lever 31 and the regulation moving member 60 can be moved within the gap between the ceiling surface 4 a and the guide plate 70.

  The guide plate 70 is formed with a holding recess 71 that constitutes a holding means that opens forward (in the Y1 direction). As shown in FIG. 2, when the restricting protrusion 62 provided on the restricting moving member 60 enters the holding recess 71, the restricting protrusion 62 is installed at the restricting position. At this time, as shown in FIG. 4, when the small-diameter disk Ds is loaded in a position shifted to the right side from the center line OO, the outer peripheral edge of the small-diameter disk Ds is restricted by the restriction protrusion 62, and the small-diameter disk Ds is Correction is made to return to the center line OO side.

  Further, the holding recess 71 is formed along a curved locus whose convex side is directed rightward, and as shown in FIG. 5, when the detection lever 21 on the right side is largely rotated counterclockwise (CCW). The regulation moving member 60 is rotated counterclockwise so that the regulation projection 62 can move in the direction of coming out of the holding recess 71.

  At the front end of the guide plate 70, an urging guide portion 72 extending from the opening of the holding recess 71 toward the center line OO is formed. As shown in FIGS. 5 to 6, the restricting projection 62 comes out of the holding recess 71 forward, and the restricting projection 62 is pushed at the outer peripheral edge of the large-diameter disk Dl to rotate the restricting moving member 60 counterclockwise. When this is done, the elastic piece 63 formed integrally with the restricting moving member 60 is pressed against the urging guide portion 72, and a returning urging force in the clockwise direction (CW) is applied to the restricting moving member 60.

  Further, a sliding guide portion 73 extending in the right direction from the opening of the holding recess 71 is formed at the front end of the guide plate 70, and the right end of the sliding guide portion 73 is at the center line OO. An evacuation portion 74 formed to be inclined is formed. As shown in FIG. 7, when the large-diameter disk Dl is loaded, the restricting projection 62 is held by the retracting portion 74 and is restrained to the retracted position away from the outer peripheral edge of the large-diameter disk Dl. .

Next, the loading operation of the small-diameter disk Ds will be described with reference to FIGS.
FIG. 2 shows a standby state before a disc is loaded. In this standby state, the detection lever 21 is rotated clockwise (CW) by the elastic force of the spring 36, and the clockwise rotation of the detection lever 21 is restricted by the stopper 39a. Further, the positioning lever 31 is rotated counterclockwise (CCW), and the positioning protrusion 34 provided on the positioning lever 31 is positioned in the small-diameter disk setting portion 42 of the right guide portion 40. The left detection lever 22 rotates counterclockwise (CCW) in conjunction with the right detection lever 21, and the counterclockwise rotation is restricted by the stopper 39b. Further, the left positioning lever 33 is rotated in the clockwise direction (CW), and the positioning protrusion 35 is positioned in the small diameter disk setting portion 45 of the guide portion 41. The pair of detection protrusions 23 and 24 are opposed to each other with a space W narrower than the diameter of the small-diameter disk Ds.

  Further, the restriction protrusion 62 provided on the restriction moving member 60 is in a restriction position held in a holding recess 71 formed in the guide plate 70. Further, in the transport unit 11, the transport roller 12 is pressed against the sliding member 13 by a spring force.

  When the small-diameter disk Ds is inserted from the insertion port 6, the outer peripheral edge of the small-diameter disk Ds enters between the detection protrusion 23 and the detection protrusion 24 as shown in FIG. When the small-diameter disk Ds is pushed into the housing 2, the detection protrusion 23 and the detection protrusion 24 slide on the outer peripheral edge of the small-diameter disk Ds, and the interval between the opposing protrusions is widened. When the rotation operation of the detection lever 21 or the detection lever 22 at this time is detected by a switch (not shown), the conveyance motor is started by a command from the control circuit, and the conveyance roller 12 rotates counterclockwise in FIG. start.

  The small-diameter disk Ds is sandwiched between the transport roller 12 and the sliding member 13 and is carried in the housing 2 forward (Y1 direction) by the rotational force of the transport roller 12. As the small-diameter disk Ds is carried in, the detection protrusion 23 and the detection protrusion 24 slide on the outer peripheral edge of the small-diameter disk Ds, and the facing distance is gradually widened. FIG. 3 shows a state in which the center hole of the small-diameter disk Ds is located between the detection protrusion 23 and the detection protrusion 24. At this time, the facing interval between the detection protrusion 23 and the detection protrusion 24 is W1, and this interval W1. Is the maximum interval when the small-diameter disk Ds is loaded.

  In FIG. 3, as the right detection lever 21 rotates counterclockwise (CCW), the right positioning protrusion 34 slides on the sliding guide 43 of the guide 40 and moves in the (A) direction. To do. Similarly, since the left detection lever 22 rotates in the clockwise direction, the left positioning protrusion 35 slides on the sliding guide portion 46 of the guide portion 41 and moves in the (a) direction. However, when the distance between the detection protrusion 23 and the detection protrusion 24 is W1 shown in FIG. 3, the right positioning protrusion 34 does not escape forward from the small-diameter disk setting portion 42 of the guide portion 40, and the left positioning protrusion 35. However, the small diameter disc setting portion 45 of the guide portion 41 does not slip forward.

  FIG. 4 shows a state in which the small-diameter disk Ds is further carried into the housing 2 and the outer peripheral edge of the small-diameter disk Ds is separated from the detection protrusion 23 and the detection protrusion 24. While the small-diameter disk Ds is carried into the position shown in FIGS. 3 to 4, the detection lever 21 and the detection lever 22 are restored to the original state, and the detection protrusion 23 and the detection protrusion 24 are at the standby position of the facing interval W. Be restored. Accordingly, the positioning lever 31 and the positioning lever 33 also return to the same initial state as in FIG. As a result, the positioning protrusion 34 returns to the small diameter disk setting section 42 of the guide section 40 and is set to the small diameter disk setting position, and the left positioning protrusion 35 also returns to the small diameter disk setting section 45 of the guide section 41 and sets the small diameter disk. Set to position.

  At this time, the right positioning protrusion 34 faces the small diameter pressing portion 55 formed integrally with the detection operation member 51 from the rear (Y2 side).

  As shown in FIG. 3, since the small-diameter disk Ds is carried in a state sandwiched between the right detection protrusion 23 and the left detection protrusion 24, as shown in FIG. It is easy to carry in so that the center is along the center line OO. In the small diameter disk Ds indicated by (A) in FIG. 4, the center hole is located slightly rearward (Y2 direction) from the turntable 9. When the small-diameter disk Ds is carried further in the Y1 direction from the position (a), the right positioning protrusion 34 is pushed forward by the outer peripheral edge of the small-diameter disk Ds, and the small diameter of the detection operation member 51 is pushed by the positioning protrusion 34. When the pressing portion 55 is pressed, the detection operation member 51 is rotated clockwise (CW).

  At substantially the same time as the detection operation member 51 is rotated in the clockwise direction, the outer peripheral edge of the small-diameter disk Ds hits both the positioning protrusion 34 and the positioning protrusion 35, and the center of the small-diameter disk Ds is positioned on the center line OO. Then, the center hole of the small-diameter disk Ds is positioned on the turntable 9.

  As described above, since the detection operation member 51 rotates clockwise at the same time when the center hole of the small-diameter disk Ds is positioned on the turntable 9, the detection switch 58 is moved by the detection unit 57 of the detection operation member 51. It is made to work. At this time, the control circuit recognizes that the loading of the small-diameter disk Ds has been completed, and the clamp mechanism is operated by a command from the subsequent control circuit, and the center hole of the small-diameter disk Ds is sandwiched between the turntable 9 and the clamper 10. As a result, the transport arm moves and the transport roller 12 moves away from the lower surface of the small-diameter disk Ds, and the transport input to the small-diameter disk Ds is cut off.

  Further, the spindle motor 8 of the rotation driving means 7 is started, the small-diameter disk Ds is rotationally driven together with the turntable 9, the optical head (not shown) is operated, and the signal recorded on the small-diameter disk Ds is read, or the small-diameter disk Ds. A signal is recorded on the disk Ds.

  As described above, since the small-diameter disk Ds is loaded while being sandwiched between the pair of detection protrusions 23 and 24, the small-diameter disk Ds is easily loaded with its center along the center line OO. However, when the small diameter disk Ds is forcibly biased to the right side at the insertion port 6, the small diameter disk Ds is carried forward by the rotational force of the conveying roller 12 with the center of the small diameter disk Ds shifted to the right side from the center line OO. It can happen. In FIG. 4, the small-diameter disk Ds that is loaded with its center deviated to the right side from the center line OO is indicated by a symbol (c).

  As shown in (c), the small-diameter disk Ds that is loaded in a posture biased to the right side has its outer peripheral edge hit the restriction projection 62 at the restriction position, and further, the small-diameter disk Ds is received by the carry input received from the conveying roller 12. Then, it is carried in while rotating clockwise with the contact point with the restricting projection 62 as a fulcrum. As a result, the small-diameter disk Ds is corrected to a position where the center thereof coincides with the center line OO as shown in (a), and the center hole of the small-diameter disk Ds is guided so as to be able to coincide with the turntable 9.

  In addition, when the small-diameter disk Ds is loaded in the posture (c), the restricting protrusion 62 at the restricting position is pushed by the outer peripheral edge of the small-diameter disk Ds. However, since the arc locus of the center line OL of the holding recess 71 holding the restricting protrusion 62 does not coincide with the turning locus of the restricting moving member 60 around the support shaft 61, the pressing received from the small-diameter disk Ds. The regulation protrusion 62 does not move from the regulation position due to the pressure.

  Here, if the restricting protrusion 62 is not present at the restricting position shown in FIG. 4, the small-diameter disk Ds having the posture shown in FIG. 4C is carried in the Y1 direction as it is, and the outside of the small-diameter disk Ds The peripheral edge hits only the right positioning protrusion 34 without hitting the left positioning protrusion 35 and presses the positioning protrusion 34 in the Y1 direction. As a result, the small-diameter pressing portion 55 is pressed by the positioning projection 34 and the detection operation member 51 is rotated in the clockwise direction even though the center of the small-diameter disk Ds is shifted rightward from the center line OO. Therefore, there is a problem that the detection switch 58 is operated to start the clamping operation.

  However, in this embodiment, since the restricting protrusion 62 is disposed at the restricting position, the small-diameter disk Ds can be corrected toward the center line OO side. In order to exert such a correction function, the restricting protrusion 62 at the restricting position is behind the right positioning protrusion 34 at the small-diameter disk installation position and the distance from the center line OO is small-diameter disk Ds. It is preferable to arrange | position in the position away from the radial dimension.

  On the other hand, when the small-diameter disk Ds is inserted at the insertion port 6 from a position biased to the left with respect to the center line OO, the center of the small-diameter disk Ds is displaced to the left of the center line OO. It is possible that it will be carried in in the state of being. However, in this case, the outer peripheral edge of the small-diameter disk Ds first hits the positioning projection 35 at the left-side small-diameter disk installation position, and the subsequent carrying input makes the small-diameter disk Ds a contact point with the positioning protrusion 35 as a fulcrum. Then, the right positioning protrusion 34 is pushed by the outer peripheral edge of the small-diameter disk Ds.

  Accordingly, when the detection operation member 51 is rotated clockwise by the right positioning projection 34 to operate the detection switch 58 and the disk clamping operation is started, the center hole of the small-diameter disk Ds is positioned on the turntable 9. Therefore, no particular problem occurs.

5 to 7 show the operation for loading the large-diameter disk Dl.
When the large-diameter disk Dl is inserted from the insertion slot 6, the interval between the detection protrusion 23 and the detection protrusion 24 is widened by the outer peripheral edge of the large-diameter disk Dl. When the rotation operation of either the detection lever 21 or the detection lever 22 is detected by the switch, the transport motor is started, and the large-diameter disk Dl is sandwiched between the transport roller 12 and the sliding member 13 and carried in. Go. Since the large-diameter disk Dl has a diameter of 12 cm and is sufficiently larger than the small-diameter disk Ds, the distance between the detection protrusion 23 and the detection protrusion 24 is greatly increased as the large-diameter disk Dl is carried. .

  FIG. 5 shows a state where the center hole of the large-diameter disk reaches between the detection protrusion 23 and the detection protrusion 24. At this time, the distance between the detection protrusion 23 and the detection protrusion 24 is widened to W2.

  During the period from the standby state of FIG. 2 to FIG. 5, the right detection lever 21 rotates largely in the counterclockwise direction (CCW), and the left detection lever 22 also rotates significantly in the clockwise direction (CW). When the respective detection levers 21 and 22 are rotated to the state shown in FIG. 5, the right positioning projection 34 slides on the sliding guide portion 43 of the guide portion 40 and greatly advances in the direction (D), thereby setting the small-diameter disk. Exit from part 42. Similarly, the left positioning protrusion 35 slides on the sliding guide portion 46 of the guide portion 41 and advances greatly in the direction (D), and then comes out of the small diameter disk setting portion 45.

  Further, in the state of FIG. 5, the right detection lever 21 is largely rotated counterclockwise (CCW), so that the support shaft 61 of the regulating moving member 60 is closer to the center line OO than the holding recess 71. Moving. The radius of curvature of the arc locus of the center line OL of the holding recess 71 is larger than the radius of curvature of the turning locus of the restricting projection 62 centering on the support shaft 61. In the state shown in FIG. Is positioned rearward (Y2 side) from the support shaft 61, so that the regulating moving member 60 rotates counterclockwise around the support shaft 61 while the support shaft 61 moves to the position shown in FIG. Thus, the restricting protrusion 62 is moved substantially to the vicinity of the opening of the holding recess 71.

  FIG. 6 shows a state where the large-diameter disk Dl is carried further forward than FIG. In FIG. 6, the restricting projection 62 is pushed forward by the outer peripheral edge of the large-diameter disc Dl, the restricting moving member 60 is further rotated counterclockwise, and the restricting projection 62 is completely detached from the holding recess 71. It is done.

  FIG. 7 shows a state where the center hole of the large-diameter disk Dl reaches the turntable 9.

  While the large-diameter disk Dl is carried from the position in FIG. 5 to the position in FIG. 7 through the position in FIG. 6, the detection lever 21 is returned in the clockwise direction (CW) by the urging force of the spring 36 to detect The lever 22 is rotated counterclockwise by the biasing force of the spring 37. Accordingly, as shown in FIG. 6, the positioning projection 34 tries to return in the (e) direction along the sliding guide portion 43 of the guide portion 40. Similarly, the left positioning protrusion 35 also tries to return in the (e) direction along the sliding guide portion 46 of the guide portion 41. However, since the outer peripheral edge of the large-diameter disk Dl hits the positioning protrusion 34 and the positioning protrusion 35 in the middle of this return operation, the positioning protrusion 35 cannot return into the small-diameter disk setting portion 42. It becomes impossible to return to the small-diameter disk setting unit 45.

  Thereafter, when the large-diameter disk Dl is further carried forward, the detection lever 21 is rotated clockwise, the detection lever 22 is rotated counterclockwise, and the detection protrusion 23 and the detection protrusion 24 are As shown in FIG. During this time, the right positioning protrusion 34 enters the large-diameter disk setting section 44 of the guide section 40 and is set to the large-diameter disk installation position by the clockwise turning force of the detection lever 21. Similarly, the positioning projection 35 enters the large diameter disk setting section 48 of the guide section 41 and is set at the large diameter disk installation position. The large-diameter disk Dl hits the positioning protrusion 34 and the positioning protrusion 35. At this time, the center hole of the large-diameter disk Dl is positioned on the turntable 9.

  In the state of FIG. 7, the positioning protrusion 34 reaching the large-diameter disk setting portion 44 is further moved by the rotational force of the detection lever 21 that is rotated clockwise by the pulling force of the spring 36, and the large-diameter pressing portion of the detection operation member 51. The detection operation member 51 is rotated clockwise by being pressed against 56. Therefore, the detection switch 58 is operated by the detection unit 57, it is detected that the loading of the large-diameter disk Dl is completed, and the clamping operation is started. At this time, since the large diameter disk Dl is positioned so that the center hole thereof coincides with the turntable 9, the large diameter disk Dl is reliably clamped by the turntable 9 and the clamper 10.

  In FIG. 6, the restricting protrusion 62 pushed forward by the outer peripheral edge of the large-diameter disk Dl is slidably guided by the guide plate 70 as the detection lever 21 is subsequently rotated in the clockwise direction (CW). Slide the portion 73 to the right. When the detection lever 21 is rotated to the state shown in FIG. 7, the restricting projection 62 is held by the retracting portion 74 at the right end of the guide plate 70 by the rotational force of the detection lever 21, and the restricting projection 62 is turned on the turntable 9. Away from the outer peripheral edge of the large-diameter disk Dl held by the head.

  Therefore, the large-diameter disk Dl can be rotated without sliding with the restricting protrusion 62. In addition, the positioning protrusion 34 that reaches the large-diameter disk setting portion 44 by the turning force of the detection lever 21 in the clockwise direction, and the positioning protrusion that reaches the large-diameter disk setting portion 48 by the turning force of the detection lever 22 in the counterclockwise direction. 35 is also slightly separated from the outer peripheral edge of the large-diameter disk Dl held on the turntable 9 at that time.

  Next, when the small-diameter disk Ds or the large-diameter disk Dl is ejected, the clamper 10 is separated from the disk by the ejecting operation command from the control circuit. Further, the transport arm is rotated so that the disk is sandwiched between the transport roller 12 and the sliding member 13. At this time, the disk is lifted by the transport roller 12, and the center hole of the disk is separated upward from the turntable 9. Thereafter, the disk is carried out toward the insertion slot 6 by the clockwise rotation of the conveying roller 12 in FIG.

  When the small-diameter disk Ds is carried out, the detection lever 21 and the detection lever 22 rotate from the state shown in FIG. 4 to the state shown in FIG. 3 as the small-diameter disk Ds moves in the Y2 direction. Return.

  When the large-diameter disk Dl is carried out, as shown in FIGS. 7 to 5, the detection protrusion 23 and the detection protrusion 24 slide on the outer peripheral edge of the large-diameter disk D1, and the right detection lever 21 is counterclockwise. The detection lever 22 on the left side is greatly rotated clockwise. When the center hole of the large-diameter disk Dl moves rearward from the detection projection 23 and the detection projection 24, the right detection lever 21 is rotated clockwise by the urging force of the spring 36 and returned. Due to the force, the left detection lever 22 rotates counterclockwise and returns. During this time, the positioning protrusion 34 slides on the sliding guide part 43 of the guide part 40 and returns to the small diameter disk setting part 42 as shown in FIG. 2, and the positioning protrusion 35 also includes the small diameter disk setting part 45 of the guide part 41. Return to.

  Further, during the carry-out operation of the large-diameter disk Dl, the right detection lever 21 rotates counterclockwise between the state shown in FIG. 7 and the state shown in FIG. 62 also moves in a direction approaching the center line OO. In the state of FIG. 5, the elastic piece 63 provided on the restriction moving member 60 abuts against the urging guide portion 72 of the guide plate 70, and the elastic piece 63 is elastically deformed to cause the restriction movement member 60 to watch. A turning biasing force in the direction is given. Therefore, after the state shown in FIG. 5, when the detection lever 21 rotates and returns in the clockwise direction, the restricting projection 62 surely enters the holding recess 71 of the guide plate 70. Therefore, when the initial state shown in FIG. 2 is restored, the restricting projection 62 is set at the restricting position in the holding recess 71.

  In the state shown in FIG. 5, for example, a torsion spring mounted on the support shaft 61 may be used instead of the elastic piece 63 as a biasing member for biasing the regulating moving member 60 in the clockwise direction.

  Further, instead of mounting the regulating moving member 60 on the detection lever 21, it can be provided so as to be movable in the left-right direction and rotatable on the ceiling surface 4 a of the upper chassis 4.

Sectional drawing which looked at the disk apparatus for vehicles which is an embodiment of the present invention from the side, It is the bottom view which looked at the upper chassis of a disk device from the II arrow direction of FIG. 1, and shows a disk insertion standby state. FIG. 2 is a bottom view of the upper chassis of the disk device as seen from the direction of arrow II in FIG. FIG. 2 is a bottom view of the upper chassis of the disk device as seen from the direction of arrow II in FIG. FIG. 2 is a bottom view of the upper chassis of the disk device viewed from the direction of arrow II in FIG. FIG. 2 is a bottom view of the upper chassis of the disk device viewed from the direction of arrow II in FIG. FIG. 2 is a bottom view of the upper chassis of the disk device as viewed from the direction of arrow II in FIG.

Explanation of symbols

Ds Small diameter disk Dl Large diameter disk Y1 Loading direction (front)
Y2 Unloading direction (rear)
DESCRIPTION OF SYMBOLS 1 Disk apparatus 2 Case 4 Upper chassis 4a Ceiling surface 6 Insertion slot 7 Rotation drive means 9 Turntable 11 Conveyance means 12 Conveyance rollers 21 and 22 Detection levers 23 and 24 Detection protrusions 25 and 26 Supporting shaft 29 Connecting members 31 and 33 Positioning Lever 34, 35 Positioning projection 36, 36 Spring (biasing means)
40, 41 Guide portion 50 Loading detection means 51 Detection operation member 58 Detection switch 60 Restriction moving member 62 Restriction projection 71 Holding recess 74 Retraction portion

Claims (5)

Which of the insertion part into which both a small diameter disk and a large diameter disk can be inserted, a conveyance means for carrying in and carrying out a disk inserted from the insertion part, and the small diameter disk and the large diameter disk carried in by the conveyance means, In the disk device having a rotational drive means that can also be mounted,
When a virtual line extending in the disk loading direction through the rotation center of the rotation driving means is a center line,
A pair of detection projections positioned on both sides of the center line, the interval between which is set to a standby position narrower than the diameter of the small-diameter disc when waiting for the insertion of the disc, and the detection projection A detection lever rotatably supported via a fulcrum located in front of the detection protrusion with respect to the detection protrusion, and an urging means for urging the detection lever in a direction to install the detection protrusion at a standby position;
A small-diameter disk installation position for positioning the small-diameter disk on the rotational drive means according to the amount of rotation of the detection lever, at a position facing the outer peripheral edge of the disk in front of the rotational drive means in the loading direction; And a positioning protrusion installed at a large-diameter disk installation position for positioning the rotary drive means,
A regulation moving member, a regulation projection that is provided on the regulation movement member and faces the outer peripheral edge of the disk, and a holding unit that holds the regulation projection at the regulation position are provided at positions laterally separated from the center line. And
When the small-diameter disc is loaded with its center shifted from the center line, the outer peripheral edge of the small-diameter disc hits the restricting protrusion held at the restricting position to restrict the deviation from the center line, and the large-diameter disc is loaded. The disk device is characterized in that when it is pushed, it is pushed to the outer peripheral edge and the restricting projection is pushed and moved to a retracted position away from the holding means and the center line. The disk device according to claim 1, wherein the restricting moving member is rotatably supported by the detection lever in front of the fulcrum in the loading direction. 3. The disk device according to claim 1, further comprising an urging member that holds the restricting protrusion on the holding means when the large-diameter disk is unloaded. 4. The disk device according to claim 1, wherein the holding unit is a holding recess that is located laterally away from the center line and opens toward the loading direction. 5. At a position away from the center line in one direction, there is provided a load detecting means that is operated by carrying in a small-diameter disk and detects completion of loading of the disk, and the restricting protrusion detects the loading with respect to the center line. 5. The disk apparatus according to claim 1, wherein the disk apparatus is disposed on the same side as the means and on the insertion portion side with respect to the positioning protrusion at the small-diameter disk installation position.