JP2014053070A - Disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk device which allows the reduction of power consumption by preventing unnecessary power consumption during waiting for disk insertion.SOLUTION: After a movable guide part 50 is operated by a force for inserting a disk D to switch an output of a mechanical detection switch S1 to a turned-on state, power is supplied to optical detection members 71A and 71B. When one optical detection member 71A is in a non-detection state still and the other optical detection member 71B first enters into a detection state, a roller shaft 42 is started to start loading the disk D. Thereafter, the regular disk D is determined to be normally loaded while both the optical detection members 71A and 71B are in the detection state still, and unloading operation is started immediately when at least one of the optical detection members 71A and 71B enters into the non-detection state.

Description

  The present invention relates to a disk device that can determine whether a regular disk is loaded at a normal position by using an optical detection member and can reduce power consumption during standby.

  A slot-in type disk device in which a disk is inserted from a slit-shaped insertion opening opened in a housing is provided with detection means inside the insertion opening, and when this detection means detects the insertion of a disk, a transport roller Is started, and the disk is loaded toward the inside of the apparatus. It is also necessary to identify whether or not a regular disc is inserted through the insertion slot. For example, when a regular disc has a diameter of 12 cm, when a disc having a diameter of 8 cm, a disc having a non-circular shape, or a rectangular card is inserted, it is determined that these are not regular discs. Therefore, it is necessary to carry out from the insertion port promptly.

  In the disk device described in Patent Document 1 below, a pair of detection members on which the outer peripheral edge of the inserted disk slides are provided inside the insertion slot. The pair of detection members are urged to approach each other by the force of the spring. When it is detected that the detection member is moved by a predetermined amount by being pushed by the outer peripheral edge of the disc, the disc is inserted from the insertion slot. It is determined that the transfer mechanism is started, and the transport mechanism is started. Thereafter, while the disc is carried in by the transport mechanism, the outer peripheral edge of the disc and the pair of detection members slide to change the facing distance between the pair of detection members. By detecting the change in the facing distance, it is determined whether or not the regular disk is normally loaded.

In the disk device described in Patent Document 4 below, an optical detection member is used as detection means. In this disk device, when the optical path of the optical detection member is interrupted by the disk, it is determined that the disk has been inserted from the insertion port, the transport mechanism is started, and the disk is transported toward the inside of the device. While the disc is transported toward the inside of the device, it is determined whether or not the regular disc is normally loaded by monitoring the combination of detection outputs from a plurality of optical detection members facing the disc. Is done.
JP 2006-99833 A JP 2000-149367 A JP 2001-143351 A JP 2005-251329 A

  In the disk device described in Patent Document 1, since the outer peripheral edge of the disk continues to slide on the detection member while the disk is being loaded, not only the resistance when the disk is loaded into the apparatus is large, When the outer peripheral edge of the inserted disc is not circular or when a card or the like is mistakenly inserted, they are caught by the detection member, and thereafter cannot be taken out from the insertion slot.

  Further, as described in Patent Document 4, a disk device that detects a disk with an optical detection member continues to energize the optical detection member while waiting for insertion of the disk, so that the disk is inserted from the insertion slot. It is necessary to be able to detect this when inserted. Therefore, the power consumption increases while waiting for the insertion of the disk. For example, in the case of in-vehicle use, there is a disadvantage that the battery power is excessively consumed when the engine is stopped.

  The present invention solves the above-described conventional problems. By operating the transport mechanism based on the detection operation of the optical detection member, the number of detection mechanisms that slide with the disk can be reduced, and the insertion of the disk is awaited. It is an object of the present invention to provide a disk device that can reduce power consumption during operation.

The present invention relates to a disc device having an insertion slot into which a disc is inserted, and a transport mechanism that is provided on the back side of the device with respect to the insertion port and transports the disc.
A movable member that is moved in the thickness direction of the disk by the disk inserted from the insertion port, a contact opening / closing type detection switch that is operated by the movable member that moves in the thickness direction and is switched to a detection state, and the insertion An optical detection member that is in a detection state by being blocked by the optical path blocked by the disc inserted from the mouth,
When the detection switch is switched to a detection state, energization of the optical detection member is started, and then, when both the detection switch and the optical detection member are in a detection state for detecting a disk, the conveyance is performed. The mechanism starts and the disc can be carried into the device .
The optical detection member includes a light-emitting element that emits detection light and a light-receiving element that receives detection light, which are provided so as to face each other with the inserted disk and the movable member interposed therebetween. A detection hole through which light passes is formed .

The disc device of the present invention is provided with an optical detection member as a detection means for detecting the disc in the device. By performing various types of operation control based on when the optical detection member detects the disk, the number of detection mechanisms that perform the detection operation by directly contacting the disk can be reduced. Therefore, when a foreign object having a non-circular outer periphery is inserted, the problem that the foreign object is caught by the detection mechanism is less likely to occur. Also, when waiting for the insertion of the disc, the optical detection member is not energized, and the optical detection member is energized when the detection switch is in the detection state with the inserted disc. It is possible to reduce power consumption during the operation .

Further, the present invention can be configured such that it is determined whether or not a regular size disc is loaded by monitoring the detection output of the optical detection member.
By detecting the shape of the object inserted by the optical detection member, there is a problem that the detection mechanism for determining the shape slides on the disk to increase the loading load, or foreign matter is caught on the detection mechanism. It becomes difficult to occur.
For example, in the present invention, the optical detection member is disposed at a position where the detection state is continued from the energized state until the regular-sized disk reaches the normal loading position.

  Further, according to the present invention, the optical detection member is disposed at a position away from the center line through which the center of the disk carried into the apparatus passes, and when the regular disk reaches a normal loading position. Further, the optical detection member faces the inner side of the outer peripheral edge facing the insertion port of the disc.

  By arranging the optical detection member as described above, when a regular disk is loaded, it can be detected that the disk has reached a normal loading position, and when a foreign object is loaded. Therefore, it is possible to quickly detect that the disc is not a regular disc and shift to a process such as unloading.

Since the present invention has a structure in which the detection switch is operated by a movable member that moves in the thickness direction of the disk, the mechanism that operates the detection switch does not slide on the outer peripheral edge of the disk. When these are inserted, they are not easily caught inside the apparatus, and can be smoothly carried out .

  In the disk device of the present invention, since the detection means other than the detection switch for detecting that the disk has been inserted from the insertion slot is constituted by the optical detection member, the detection means for starting the transport mechanism or the object being carried in The detecting means for judging the shape of the recording medium can be configured so as not to come into contact with the disk, an increase in load at the time of carry-in can be prevented, and the probability that foreign matter or the like is caught in the apparatus can be reduced.

  Further, since it is not necessary to energize the optical detection member when waiting for the insertion of the disk, it is possible to reduce the power consumption when waiting for the insertion of the disk.

  Furthermore, even if either one of the detection switch or the optical detection member is in the detection state, the conveyance mechanism will not start unless both of them are in the detection state. This foreign matter can be prevented from being carried into the apparatus when inserted.

The perspective view which shows the whole structure of the disc apparatus of embodiment of this invention, 1 is a right side view of FIG. A plan view of the disc device showing a state immediately after the disc is inserted from the insertion slot, A plan view of the disk device showing an operation in which the disk is carried by the transport roller, The top view of the disc apparatus which shows the state which the disc carried in by a conveyance roller reached the conveyance completion position, A plan view of the disk device when the disk is clamped to the turntable, A flow chart showing the operation from the insertion of the disc to the completion of loading,

  FIG. 1 is a perspective view showing the overall structure of a disk device according to an embodiment of the present invention, and FIG. 2 is a right side view of FIG. In FIG. 2, the right side slider 30a is not shown. 3 to 6 are plan views sequentially showing the operating state of the disk device. In the figure, the X1 side is the right direction, the X2 side is the left direction, the Y1 side is the front, the Y2 side is the rear, the Z1 side is the upper side, and the Z2 side is the lower side.

  The disc device can be loaded as a regular disc such as a DVD (digital versatile disc) or a CD (compact disc) with a diameter of 12 cm as a regular disc. Discs, discs with an outer peripheral shape of an ellipse or other shape, or a rectangular card C are inserted as foreign matter.

  As shown in FIGS. 3 to 6, the disk device has a housing 1 formed of a metal plate. In the case of an in-vehicle disk device, the size of the housing 1 is, for example, 1 DIN size or 1/2 DIN size, and the housing 1 is embedded and installed in an instrument panel in a vehicle cabin.

  As shown in FIGS. 3 to 6, the housing 1 has a front plate 2 facing the Y1 side, a rear plate 3 facing the Y2 side, and side plates 4 and 5 facing the X1 side and the X2 side. . Further, the housing 1 has a ceiling plate and a bottom plate. The front plate 2 has an elongated insertion port (not shown) that opens in the left-right direction (X1-X2 direction). A makeup nose made of synthetic resin is attached in front of the front plate 2 of the housing 1, and various operation members and a display device are provided on the front of the makeup nose. The makeup nose has a nose portion insertion port that communicates with the insertion port, and the disc D is inserted into the housing 1 through the nose portion insertion port and the insertion port formed in the front plate 2. Is done.

  A mechanism unit 10 shown in FIG. 1 is accommodated in the housing 1. The mechanism unit 10 has a drive base 11 on the bottom side and a clamp base 12 on the upper side. Both the drive base 11 and the clamp base 12 are formed by bending a metal plate. The drive base 11 is provided with a connecting shaft 13 extending in the X1 direction and the X2 direction on the Y2 side, and an end portion on the Y2 side of the clamp base 12 is rotatably supported by the connecting shaft 13.

  As shown in FIGS. 1 and 2 and FIGS. 3 to 6, a plurality of dampers 15 a, 15 b, and 15 c that elastically support the drive base 11 are provided inside the housing 1. These dampers 15a, 15b, and 15c are configured by enclosing oil in an elastic bag. The dampers 15a, 15b, and 15c are fixed to the inner surface of the housing 1, and support shafts fixed to the drive base 11 are supported by the dampers 15a, 15b, and 15c. After the disk D is loaded in the mechanism unit 10, the disk D is rotated while the drive base 11 is elastically supported by the dampers 15a, 15b, and 15c.

  As shown in FIG. 2, a rotation drive unit 20 is provided on the Y1 side of the drive base 11. The rotation drive unit 20 includes a spindle motor fixed on the drive base 11 and a synthetic resin turntable 23 fixed to a rotation shaft of the spindle motor.

  As shown in FIG. 1, an optical head 25 is mounted on the drive base 11. The optical head 25 is movably supported by a guide mechanism provided on the drive base 11 and is provided with a sled mechanism that reciprocates the optical head 25 along the guide mechanism. The optical head 25 is moved in the radial direction of the disk D along the recording surface of the disk D clamped to the turntable 23 by the thread mechanism.

  As shown in FIG. 1, a synthetic resin clamper 27 is rotatably supported at the end of the clamp base 12 on the Y1 side, and the rotating shaft of the clamper 27 is pressed downward (Z2 direction). A leaf spring 26 is provided.

  As shown in FIGS. 1 and 2, a projecting piece 12a projecting in the X1 direction is integrally formed at the end of the drive base 11 on the Y2 side, and a torsion coil spring 17 is attached to the projecting piece 12a. . One arm portion of the torsion coil spring 17 is hung on the drive base 11, and the other arm portion is hung on the clamp base 12. The clamp base 12 is always urged counterclockwise with the connecting shaft 13 as a fulcrum. Has been. That is, the clamp base 12 is always urged to rotate so that the clamper 27 is pressed against the turntable 23.

  As shown in FIG. 2, a lifting shaft 18 protruding in the X1 direction is fixed to the end portion of the clamp base 12 on the Y1 side. When an upward force (Z1 direction) is applied to the lifting shaft 18, the clamp base 12 is rotated clockwise against the urging force of the torsion coil spring 17, and the clamper 27 is separated from the turntable 23.

  As shown in FIGS. 1 and 3, a pair of stopper members 16 a and 16 b projecting downward are formed on the left and right sides of the clamp base 12. The stopper member is a metal pin, and when the outer peripheral edge of the disk D carried into the housing 1 hits the stopper members 16a and 16a, the center of the disk D is centered on the turntable 23. Positioned to match.

  As shown in FIGS. 1 and 3, the drive base 11 is provided with a right side slider 30a on the X1 side and a left side slider 30b on the X2 side. As shown in FIG. 1, a guide long hole 31 extending in the front-rear direction (Y1-Y2 direction) is opened in the right side slider 30 a, and the guide shaft 19 is fixed to the drive base 11. A plurality of guide elongated holes 31 and guide shafts 19 are provided in one right side slider 30a, but only one set is shown in FIG. By sliding the guide long hole 31 on the guide shaft 19, the right side slider 30a can reciprocate in the Y1-Y2 direction. Similarly, the left side slider 30b is also supported at the X2 side portion of the drive base 11 so as to be capable of reciprocating in the front-rear direction.

  A motor M is provided at the left rear of the drive base 11, and the left slider 30 b is driven in the front-rear direction by the power of the motor M. As shown in FIG. 4, a link slider 46 is provided on the bottom side of the mechanism unit 10 on the Y1 side so as to be movable in the X1-X2 direction. As shown in FIGS. 4 and 6, a reversing lever 47 is provided between the link slider 46 and the right side slider 30a. The reversing lever 47 is supported so as to be rotatable about a support shaft 47a. A connecting shaft 47b provided on one arm portion of the reversing lever 47 is connected to the link slider 46, and a transmission shaft 47c provided on the other arm portion is connected to the right slider 30a.

  When the left slider 30b is moved in the Y1-Y2 direction by the power of the motor M, the moving force is transmitted to the right slider 30a via the link mechanism including the link slider 46 and the reverse lever 47, and the right slider 30a and the left slider 30b are moved in the Y1-Y2 direction in synchronization. In the standby state shown in FIGS. 1 and 2, both the right side slider 30a and the left side slider 30b are moved backward (Y2 direction).

  As shown in FIGS. 3 to 6, a trigger member 14 is provided on the Y2 side of the mechanism unit 10. The trigger member 14 includes an arm 14B that is rotatably supported on the drive base 11, and a detection pin 14A that is fixed to the arm 14B and faces the outer peripheral edge of the loaded disk D.

  When the regular disk D having a diameter of 12 cm is moved to the position shown in FIG. 5, the detection pin 14A is pushed at the outer peripheral edge of the disk D, and the arm 14B rotates counterclockwise. At this time, the gear meshes with the rotational force of the arm 14B, and the transmission path of the power transmission mechanism is established. By establishing the transmission path of this power transmission mechanism, the power of the motor M is transmitted to the left slider 30b as a linear moving force in the Y1 direction, and the right slider 30a and the left slider 30b move in the Y1 direction in synchronization. Be made.

  Hereinafter, the right side slider 30a will be mainly described. The right side slider 30a and the left side slider 30b exhibit the same function, and the shape and structure of the left side slider 30b are the same as those of the right side slider 30a.

  As shown in FIG. 1, a clamp control cam portion 32 is provided on the right side slider 30a. The clamp control cam portion 32 has a cam elongated hole 32a that is directed upward (Z1 direction) toward the front (Y1 direction), and a large-diameter relief hole portion 32b that is continuous with the cam elongated hole 32a on the Y2 side. doing. The lifting shaft 18 provided on the clamp base 12 is inserted so as to be able to move inside the cam long hole 32a and the escape hole 32b.

  In the standby state shown in FIG. 1, since the right side slider 30a moves backward (Y2 direction), the lifting shaft 18 is lifted in the Z1 direction by the cam elongated hole 32a. At this time, the clamp base 12 is rotated in the clockwise direction, and the clamper 27 is set in a clamp release state away from the turntable 23 upward. When the center hole of the normal disk D is moved onto the turntable 23, the motor M is started and the right side slider 30a is moved forward (Y1 direction), the lifting shaft 18 is moved to the escape hole 32b. Move in. At this time, the clamp base 12 is rotated counterclockwise by the elastic force of the torsion coil spring 17, the center portion of the disk D is pressed against the turntable 23 by the clamper 27, and the disk D is clamped to the turntable 23.

  As shown in FIG. 1, a lock cam portion 33 is provided on the right side slider 30a. The lock cam portion 33 has a lock long hole 33a extending in the front-rear direction and a large diameter relief hole 33b continuous on the Y2 side of the lock long hole 33a.

  In the standby state shown in FIG. 1, when the right side slider 30a is moved in the Y2 direction, the restraining shaft (not shown) fixed to the inner surfaces of the left and right side plates 4 and 5 of the housing 1 is locked. It is held in the hole 33a. At this time, the mechanism unit 10 is held without moving inside the housing 1, and the disk D carried in from the insertion slot is in the gap between the turntable 23 and the clamper 27 far from the turntable 23. Easy to move to. When the right side slider 30a moves in the Y1 direction, the clamper 27 descends and the center portion of the disk D is clamped, and the lock slot 33a is disengaged from the restraint shaft, and the restraint shaft moves to the escape hole portion 33b. At this time, the mechanism unit 10 is not restrained in the housing 1 and is elastically supported by the dampers 15a, 15b, and 15c. While the disk D clamped on the turntable 23 is rotationally driven, external vibrations are easily absorbed as vibrations of the dampers 15a, 15b, and 15c, and a direct influence on the mechanism unit 10 is prevented.

  As shown in FIGS. 1 and 2, a transport mechanism 40 is provided between the insertion port and the rotation drive unit.

  The transport mechanism 40 includes a transport roller 41 and a fixed guide portion 43 that faces the Z1 side of the transport roller 41.

  The fixed guide portion 43 is formed of a synthetic resin material having a small friction coefficient, and is fixed to the lower surface of the ceiling plate of the housing 1 so as not to move. As shown in FIG. 2, the fixed guide portion 43 is a guide surface whose lower surface 43a extends horizontally in the Y1-Y2 direction.

  The transport roller 41 is formed in a cylindrical shape with a material having a large friction coefficient such as synthetic rubber, and is mounted on the outer periphery of a metal roller shaft 42. The right end and the left end of the roller shaft 42 are supported by the roller bracket 44.

  The roller bracket 44 is formed of a metal plate. As shown in FIGS. 1 and 2, the roller bracket 44 includes a right support portion 44a formed on the X1 side, a right front portion 44b extending upward from a Y1 side front portion of the right support portion 44a, and an X2 side. The left support portion 44c is formed, and the left support portion 44d extends upward from the Y1 side tip portion of the left support portion 44c.

  A support hole 44e is opened in the right tip 44b, and a support hole 44f is opened in the left tip 44d. The support hole 44e and the support hole 44f are located on an axis parallel to the X1-X2 axis. A pair of short support shafts 45, 45 are fixed to the inner surfaces of the left and right side plates 4, 5 of the housing 1, and support holes 44 e, 44 f are supported by the respective support shafts 45, 45, and roller brackets Reference numeral 44 is rotatably supported with the support shafts 45 and 45 as pivot points. A tension coil spring (not shown) is hung between the roller bracket 44 and the bottom plate of the housing, and the roller bracket 44 is always urged counterclockwise in FIG.

  As shown in FIG. 2, a holding hole 44g is formed at the Y2 side end of the right support 44a of the roller bracket 44, and a holding hole 44g is similarly opened at the Y2 end of the left support 44c. Yes. The left and right ends of the roller shaft 42 are inserted into the holding holes 44g and 44g, respectively. In the standby state shown in FIG. 1, the roller bracket 44 is urged counterclockwise by the elastic force of the tension coil spring, and the roller shaft 42 is pressed against the fixed guide portion 43 by this urging force.

  As shown in FIGS. 3 to 6, a pinion gear 48 is fixed to the end portion on the X2 side of the roller shaft 42, and a conveyance motor (not shown) is provided inside the side plate 5 on the left side (X2 side) of the housing 1. A drive gear 49 to which the rotational power is given is provided. The roller bracket 44 rotates counterclockwise from the waiting state for inserting the disk D shown in FIGS. 1 and 2 until the disk D is loaded to the predetermined loading completion position as shown in FIG. Therefore, the pinion gear 48 meshes with the drive gear 49. During this time, the rotational force of the transport motor is transmitted from the drive gear 49 to the pinion gear 48, and the roller shaft 42 continuously rotates in the direction in which the disk D is carried.

  As shown in FIG. 2, the roller bracket 44 is provided with an opposing guide portion 44h that connects the upper edge of the right support portion 44a and the upper edge of the left support portion 44c. That is, the right support portion 44a is formed by being bent at a right angle downward on the X1 side of the opposing guide portion 44h, and the left support portion 44c is formed by being bent at a right angle on the X2 side of the opposite guide portion 44h.

  The guide surface 44i on the upper surface of the opposing guide portion 44h is a flat surface. In the standby state shown in FIG. 2, the guide surface 44i is inclined so as to be lifted upward (Z1 direction) toward the rear (Y2 direction).

  A movable guide 50 that is a movable member is provided between the transport mechanism 40 and the front plate 2 having an insertion port. The movable guide portion 50 is formed of a synthetic resin material having the same low friction coefficient as that of the fixed guide portion 43, and the lower surface thereof is a smooth guide surface 51. The guide surface 51 faces the guide surface 44i of the opposing guide portion 44h provided on the roller bracket 44 from above.

  Short support shafts 52 and 52 projecting in the X1 direction and the X2 direction are integrally formed at the front end (Y1 side) of the movable guide portion 50. Each of the support shafts 52 and 52 is rotatably supported by bearing portions provided on both side plates of the housing. The movable guide 50 is urged to rotate clockwise about the support shafts 52 and 52 by its own weight and the urging force of a spring member (not shown). On the upper surface of the movable guide portion 50, a stopper portion 53 is formed on the Y1 side of the support shafts 52, 52. When the stopper portion 53 hits the lower surface of the ceiling plate of the housing 1, the movable guide portion 50 becomes a rotation limit that does not rotate further clockwise. When the movable guide portion 50 is inclined as shown in FIG. 2, the disc D inserted from the insertion port is likely to hit the guide surface 51.

  In the standby state shown in FIG. 2, the distance between the guide surface 51 on the lower surface of the movable guide portion 50 and the guide surface 44 i of the opposite guide portion 44 h is wide on the insertion port side and gradually decreases toward the transport roller 41. ing.

  As shown in FIG. 1, a detection switch S1 having a mechanical switching contact is fixed to the front end (end on the Y1 side) of the fixed guide portion 43 at a substantially central portion in the X1-X2 direction. The actuator Sa of the switch S1 protrudes in the Y1 direction. A concave portion 54 is formed on the upper surface of the end portion of the movable guide portion 50 on the Y2 side. When the movable guide portion 50 is rotated counterclockwise so as to face the biasing force of the spring member, the actuator Sa is pushed by the bottom surface of the recess 54, and the output of the detection switch S1 is switched from OFF to ON.

  Lifting projections 55 and 55 projecting in the X1 direction and the X2 direction are integrally formed at the rear end portion (the end portion on the Y2 side) of the movable guide portion 50.

  As shown in FIG. 1, a roller control cam portion 34 is provided on the Y1 side of the right side slider 30a. The roller control cam portion 34 includes an upper guide portion 34a formed on the upper side, a lower restraint portion 34b formed on the Y2 side and below the upper guide portion 34a, and an upper guide portion 34a and a lower restraint portion 34b. It has a continuous inclined guide hole 34c. An end portion on the X1 side of the roller shaft 42 is slidably inserted into the roller control cam portion 34.

  A guide control cam portion 35 is formed at the end of the right slider 30a on the Y1 side. The guide control cam portion 35 has a lifting guide portion 35a on the Y1 side and a holding guide portion 35b extending on the Y2 side. The lifting guide part 35a is an inclined surface that gradually rises toward the rear (Y2 direction), and the holding guide part 35b is a horizontal plane that extends in the Y1-Y2 direction. The posture of the lifting protrusion 55 provided on the movable guide portion 50 is controlled by the guide control cam portion 35.

  In the standby state shown in FIG. 1, the right side slider 30 a moves in the Y <b> 2 direction, and therefore the right end portion of the roller shaft 42 is located in the upper guide portion 34 a of the roller control cam portion 34. The upper and lower opening width of the upper guide portion 34a is wider than the diameter of the roller shaft 42, and as shown in FIG. 2, the biasing force of the roller bracket 44 rotated counterclockwise by the tension coil spring is used. The roller shaft 42 is pressed toward the fixed guide portion 43.

  In the standby state shown in FIG. 1, the lifting guide portion 35a provided at the Y1 end of the right side slider 30a is separated from the lifting projection 55 in the Y2 direction, and the movable guide portion 50 is rotated clockwise. It is rotated.

  When a regular disc D having a diameter of 12 cm and a true circle is loaded, and when the disc D reaches a normal clampable position, the motor M starts and the right side slider 30a and the left side slider 30b move in the Y1 direction in synchronization. To do. As described above, when the right side slider 30a moves in the Y1 direction, a clamping operation is performed and the restraint of the mechanism unit 10 is released.

  Further, when the right side slider 30a and the left side slider 30b move in the Y1 direction, the right end portion of the roller shaft 42 is guided downward by the inclined guide hole 34c of the roller control cam portion 34 and is held by the lower restraint portion 34b. Is done. Therefore, the roller bracket 44 is rotated clockwise, the transport roller 41 moves to a position away from the fixed guide portion 43 and the disk D, and the opposing guide portion 44h also moves away from the movable guide portion 50. To do. Further, the lifting protrusion 55 provided on the movable guide portion 50 is lifted by the lifting guide portion 35a of the right side slider 30a and slides on the holding guide portion 35b. At this time, the movable guide 50 is in a substantially horizontal guide posture.

  As shown in FIG. 3, a circuit board 70 is provided on the lower surface of the ceiling plate of the housing 1, and optical detection members 71 </ b> A and 71 </ b> B are provided on the lower surface of the circuit board 70.

  In each of the optical detection members 71A and 71B, a light emitting element that emits detection light and a light receiving element that receives the detection light are provided facing each other in the Z direction. In the movable guide 50, detection holes are formed at positions corresponding to the respective optical detection members 71A and 71B. Detection light from the light emitting element is emitted downward through the detection hole and received by the light receiving element. The When the disk D does not block the light received by the light receiving element, an H level output signal that is a non-detection output is output from the optical detection members 71A and 71B. When the disk D blocks light, the light receiving element cannot receive light, and the optical detection members 71A and 71B output L level output signals as detection outputs.

  As shown in FIG. 3, the optical detection members 71A and 71B are both disposed between the transport roller 41 and the front plate 2 having the insertion port, and the optical detection member 71B as the first optical detection member is It is arranged closer to the front plate 2 than the optical detection member 71A, which is the second optical detection member.

  As shown in FIG. 3, when a line extending in the Y1-Y2 direction through the rotation center of the turntable 23 is a transport center line Oa-Oa, the optical detection members 71A and 71B are both transport center lines Oa-Oa. It is arranged away from the left side (X2 side). While the regular disk D having a diameter of 12 cm is carried in the Y2 direction, the center hole Da of the disk D and the surrounding ring-shaped transparent portion do not pass through the optical detection members 71A and 71B. .

  As shown in FIG. 3, the optical detection members 71 </ b> A and 71 </ b> B are both disposed at the same distance r <b> 0 from the rotation center of the turntable 23. In addition, as shown in FIG. 6, when the regular disk D is clamped to the turntable 23, the optical detection members 71A and 71B are both positioned just inside the outer peripheral edge of the disk D and are outside the disk D. It is arranged just inside the ring-shaped transparent portion that is usually formed on the periphery.

  Therefore, after the regular disk D is inserted from the insertion slot and both the optical detection members 71A and 71B are at the L level in the detection state, the disk D is normally loaded and as shown in FIG. The optical detection members 71A and 71B continue to be at the L level until the center of the disk D is positioned at a normal loading completion position that coincides with the rotation center of the turntable 23.

  As shown in FIG. 6, a circuit board is provided on the upper surface of the bottom plate of the housing, and a limit switch S2 is provided on the X1 side of the circuit board. The actuator Sb of the limit switch S2 protrudes in the X1 direction.

  A contact portion (not shown) is provided on the lower surface of the reversing lever 47 for transmitting the moving force of the left slider 30b to the right slider 30a. When the reversing lever 47 rotates clockwise about the support shaft 47a and the right side slider 30a moves most in the Y1 direction, the contact portion contacts the actuator Sb of the limit switch S2, and the limit switch S2 Is switched from OFF to ON. At this time, it is detected that the right side slider 30a and the left side slider 30b have moved most in the Y1 direction, and a control circuit (not shown) determines that a series of loading operations of the disk D has been completed, and the motor M is stopped. .

  Next, an operation for loading the disk D into the disk device and an operation for unloading the disk D from the insertion slot will be described.

  FIG. 7 is a flowchart showing the operation from when a disc is inserted through the insertion slot until it is carried into a clampable position. In the flowchart of FIG. 7, each step is indicated by a symbol “ST”.

(Disc insertion standby state)
As shown in FIGS. 1 and 2, in the disk insertion standby state before the disk D is inserted, both the right side slider 30a and the left side slider 30b are moved in the Y2 direction. The lifting shaft 18 is lifted by the cam elongated hole 32a of the clamp control cam portion 32 provided in the right side slider 30a, the clamp base 12 is rotated clockwise, and the clamper 27 is separated from the turntable 23 upward. Yes.

  The right end portion of the roller shaft 42 is guided by the upper guide portion 34a of the roller control cam portion 34 formed on the right side slider 30a, and the conveying roller 41 is moved by the elastic force acting on the roller bracket 44 from the tension coil spring. It is biased toward the fixed guide portion 43. Further, the lifting guide portion 35a at the end of the right slider 30a on the Y1 side is away from the lifting projection 55, and the movable guide portion 50 is rotated clockwise to be inclined to a contact posture.

  In the standby state shown in FIGS. 1 and 2, the transport motor is not energized. Further, although a detection voltage is applied to the detection switch S1, no current flows through the detection switch S1 because the contact of the detection switch S1 is opened without contact. Further, the light-emitting elements of the optical detection members 71A and 71B are not energized, and no detection light is emitted from the light-emitting elements at this time.

(Import operation)
In the standby state shown in FIGS. 1 and 2, when the disc D is inserted in the Y2 direction from the insertion slot (ST1), the peripheral portion facing the Y2 side of the disc D is the guide surface 51 of the movable guide portion 50, It is guided between the guide surface 44i of the opposing guide portion 44h facing downward. In the standby state, the distance between the guide surface 51 of the movable guide portion 50 and the guide surface 44i of the opposing guide portion 44h is gradually narrowed toward the Y2 side. Therefore, when the disk D is inserted to the position shown in (i) of FIG. 3 or the position shown in (ii), the movable guide part 50 is lifted by the upper surface of the disk D, and the bottom part of the concave part 54 of the movable guide part 50 As a result, the actuator Sa is lifted, and the output of the detection switch S1 is switched from OFF to ON.

  In ST2, when the control circuit (not shown) recognizes that the output of the detection switch S1 remains OFF, the process proceeds to ST3 and the standby state shown in FIGS. 1 and 2 is continued.

  In ST2, when the output of the detection switch S1 is switched from OFF to ON, the control circuit starts energizing the light emitting elements of the optical detection members 71A and 71B. Thereafter, the light-emitting elements of the optical detection members 71A and 71B are continuously energized, or intermittent pulsed current is applied to generate detection light.

  The optical detection members 71A and 71B are not energized until the output of the detection switch S1 is turned on, and the optical detection members 71A and 71A are not turned on until the disc D or the like is inserted from the insertion slot and the output of the detection switch S1 is turned on. Since power is supplied to 71B, power consumption during disk insertion standby can be reduced.

  In ST4, it is determined whether or not the output signal of the optical detection member 71A remains at the H level and the output signal of the optical detection member 71B has changed from the H level to the L level.

  What is inserted is not a deformed disk or card having a circular outer periphery, but a normal disk D having a circular outer periphery, and this normal disk D is positioned from the position shown in FIG. When inserted to the position indicated by ii), the detection light of the optical detection member 71B is blocked first by the Y2 side end of the disk D, and at that time, the detection light of the optical detection member 71A is not blocked yet. Therefore, the output signal of the optical detection member 71B changes from the H level to the L level, and the output signal of the optical detection member 71A remains at the H level. At this time, the control circuit determines that the disc D that may be carried in is inserted, moves to ST5, starts the transport motor, and starts the roller shaft 42 in the disc loading direction.

  When a regular disk D having a diameter of 12 cm is inserted, after the detection switch S1 is turned ON in ST2, as shown in ST4 with a delay, only the optical detection member 71B is set to the L level in the detection state. Alternatively, when the detection switch S1 is turned ON in ST2, the optical detection member 71B is already blocked by the disk D, and ST4 is established at the same time as ST2 is reached. It may be determined that the disk D has been inserted.

  Here, after the detection switch S1 is turned on and the optical detection members 71A and 71B are energized, if the output signal of the optical detection member 71B does not become the L level which is the detection state, the conveyance motor is not started and the roller shaft is not started. Without rotating 42, the energization of the optical detection members 71A and 71B is continued. Then, when the detection switch S1 is turned off, it is determined that there is no longer any insertion from the insertion port, and energization of the optical detection members 71A and 71B is stopped.

  In ST4, when the output signal of the optical detection member 71B remains at the H level in the non-detection state and only the output signal of the back optical detection member 71A becomes the detection level L, the control circuit It is determined that the disk inserted from the insertion slot is not a circular disk, and the process does not proceed to ST5 and the roller shaft 42 is not started. Also at this time, the energization to the optical detection members 71A and 71B is stopped after the detection switch S1 is turned off.

  That is, when the regular disk D is normally inserted from the insertion slot and the outer peripheral edge on the Y2 side of the disk D hits the transport roller 41, as shown in (ii) of FIG. However, the positional relationship between the transport roller 41 and the optical detection members 71A and 71B is determined so that the output signal of the optical detection member 71A does not enter the detection state. Thus, when the regular disk D is normally inserted, the roller shaft 42 can be started. When any other irregular disk or card is inserted, the roller shaft 42 does not start, and these irregular disks, etc. Is likely to be prevented from being carried into the apparatus.

  Further, the optical detection members 71A and 71B are provided only at a position on the left side of the transport center line Oa-Oa, and an optical detection member is provided on the right side of the optical detection member 71B on the insertion port side. There are not many areas. For example, even if a credit card or a card-like foreign object of the same size is inserted into the insertion slot at a position close to the right side (X1 side) and the detection switch S1 is turned on, the optical detection member 71B is in the detection state. When these foreign substances are inserted, the roller shaft 42 is not started and the transfer operation is not performed.

  FIG. 4 shows a small-diameter disk D1 having a diameter of 8 cm. However, when this small-diameter disk D1 is inserted from the insertion port on the right side, the optical detection member 71B is not in the detection state and the transport motor is started. Can be avoided.

  In ST5, when the transport motor is started and the roller shaft 42 rotates in the carry-in direction, the peripheral edge on the Y2 side of the disk D is guided between the transport roller 41 and the fixed guide 43 by the rotational force of the transport roller 41. It is burned. Since the elastic force of the tension coil spring acts on the roller shaft 42, the disk D is sandwiched between the transport roller 41 and the lower surface 43 a of the fixed guide portion 43, and inward of the housing 1 by the rotational force of the transport roller 41. It is carried toward.

  In ST4, the measurement timer is started when the control unit recognizes that the output signal of the optical detection member 71B has changed from H level to L level in ST4. Start measurement.

  In ST6, after the optical detection member 71B is in the detection state, it is monitored whether or not the output signal of the optical detection member 71A is switched to the L level that is the detection state while the optical detection member 71B maintains the detection state. If the optical detection member 71B does not become the L level before the elapse of a predetermined time from the start of the time measurement, it is determined that the loaded disc is not the regular disc D, and the process proceeds to ST7. Then, the conveyance motor is reversed and the roller shaft 42 is reversed, and the operation shifts to the carry-out operation.

  If the output signal of the optical detection member 71A becomes L level within a predetermined time, the carry-in operation by the rotation of the carry roller 41 is continued, and the process proceeds to ST8.

  In a subsequent carry-in operation, when a regular disk having a diameter of 12 cm is normally carried in by the rotational force of the transport roller 41, the center hole of the regular disk D or a ring-shaped transparent portion on the outer periphery thereof is an optical detection member. It does not pass through 71A and 71B, and the ring-shaped transparent portion on the outer periphery of the disk D does not pass through the optical detection members 71A and 71B. Further, as shown in FIG. 5, when the center of the regular disk D is positioned at a normal loading position where the center of the regular disk D coincides with the center of the turntable 23, the optical detection members 71A and 71B Opposite the inner side of the ring-shaped transparent part.

  Therefore, when the regular disk D is loaded, as shown in FIG. 5, the optical detection members 71A and 71B are both kept at the L level until the positioning of the disk D is completed. In the meantime, in the control circuit, if at least one of the optical detection members 71A and 71B is in the non-detection state of H level, it is determined that the loaded disc is not a regular disk, the transport roller is reversed, and the roller shaft 42 is reversed and these are discharged | emitted from an insertion port.

  That is, in ST8, it is monitored whether the optical detection member 71B continues the L level that is the detection state or whether the optical detection member 71A continues the L level that is the detection state in ST9. While the establishment of both ST8 and ST9 continues, it is determined that the regular disk D has been normally carried in normally. If at least one of ST8 and ST9 is not established, ST7 is immediately performed at that time. To move to the unloading operation.

  Further, the distance r0 from the rotation center of the turntable 23 shown in FIG. 3 to the optical detection members 71A and 71B is set to 4 cm or more. As shown in FIG. 4, when the small-diameter disk D1 having a diameter of 8 cm is inserted, both the optical detection member 71A and the optical detection member 71B are not in the detection state, and there is a high probability that ST6 is not satisfied. Is established, at the time when the center of the small-diameter disk D1 approaches the turntable 23, at least one of the optical detection member 71A and the optical detection member 71B is in a non-detection state. Therefore, the process immediately moves to ST7 and the small-diameter disk D1 is carried out.

  In addition, when a deformed disk or card other than the small-diameter disk D1 having a non-circular outer shape is loaded, the probability of shifting to the unloading operation of ST7 is similarly increased.

  When the regular disk D is further carried in the Y2 direction from the state shown in FIG. 4 and reaches the position shown in FIG. 5, the detection pin 14A constituting the trigger member 14 is moved in the Y2 direction by the outer peripheral edge on the Y2 side of the disk D. The arm 14B is rotated counterclockwise. At the same time, the outer peripheral edge of the regular disk D hits the pair of stopper members 16a and 16b, and the disk D is positioned at a normal loading completion position that is a clampable position.

  When the arm 14B of the trigger member 14 rotates counterclockwise, the motor M starts and the gear of the power transmission mechanism is engaged, and the left slider 30b is moved in the Y1 direction by the power of the motor M. Note that the motor M is also used as a transport motor, and the motor M is started in ST5 to rotate the roller shaft 42. Thereafter, in the state shown in FIG. 5, a power transmission mechanism is established by the rotational force of the arm 14B. May be transmitted from the power transmission mechanism to the left slider 30b.

  Thereafter, the right side slider 30a and the left side slider 30b move in the Y1 direction from the position shown in FIG. 5 in synchronization. In this process, the lifting shaft 18 is guided downward by the cam elongated hole 32a of the clamp control cam portion 32 provided in the right side slider 30a shown in FIG. 1, and is moved to the escape hole portion 32b. Therefore, the clamp base 12 is rotated counterclockwise by the urging force of the torsion coil spring 17 with the connecting shafts 13 and 13 as fulcrums, and the clamper 27 is lowered toward the turntable 23.

  Almost simultaneously with the above-described counterclockwise rotation of the clamp base 12, the right end portion of the roller shaft 42 moves from the upper guide portion 34a of the roller control cam portion 34 provided on the right side slider 30a to the inclined guide hole 34c. Guided and further restrained by the lower restraining portion 34b. As a result, the roller bracket 44 is rotated clockwise, and the roller shaft 42 and the transport roller 41 are lowered. The regular disk D riding on the transport roller 41 descends together with the transport roller 41, the center hole Da of the disk D is sandwiched between the turntable 23 and the clamper 27, and the disk D is clamped.

  When the right side slider 30a further moves in the Y1 direction after the transport roller 41 is restrained to the position away from the disk D by the lower side restraint part 34b of the roller control cam part 34, the Y1 of the right side slider 30a moves. The lifting projection 55 is lifted by the lifting guide portion 35a of the guide control cam portion 35 provided at the end on the side, and further held by the holding guide portion 35b. As a result, the movable guide portion 50 is rotated counterclockwise, and the guide surface 51 on the lower surface of the movable guide portion 50 assumes a horizontal posture and moves away from the clamped disc D upward.

  When the right side slider 30a moves most in the Y1 direction and the clamping operation of the regular disk D is completed as described above, the contact portion of the reversing lever 47 that drives the right side slider 30a as shown in FIG. The actuator contacts the actuator Sb of the limit switch S2, and the output of the limit switch S2 is switched from OFF to ON (ST10 in FIG. 7). The limit switch S2 functions as a disc loading completion detection switch that detects that the disc D is clamped to the turntable 23.

  In the flowchart shown in FIG. 7, in ST10, it is monitored whether or not the limit switch S2 is turned on within a predetermined time after the timer measurement is started in ST4. If ST10 is established within a predetermined time, the process proceeds to ST11, where it is determined that the disk loading is completed, and the disk D clamped on the turntable 23 can be rotationally driven in the state shown in FIG.

  On the other hand, if ST10 is not reached within a predetermined time from ST4, it is determined that the disk has not been clamped normally, and the process proceeds to ST7 and the transfer operation is performed.

(Unloading operation)
When carrying out the regular disk D that has been driven, the motor M moves the left slider 30b and the right slider 30a in the Y2 direction to release the clamp of the disk D. Further, the disk D is sandwiched between the transport roller 41 and the fixed guide portion 43, and the disk D is unloaded from the insertion port.

  At this time, the output signals of the optical detection members 71A and 71B are monitored, and the conveyance motor is stopped immediately after the optical detection member 71A is in the non-detection state H level within a predetermined time after monitoring the carry-out operation. To do. At this time, the regular disk D is stopped at the position indicated by the solid line in FIG. 4, and the Y2 side end of the disk D is sandwiched between the stopped transport roller 41 and the fixed guide part 43.

  Thereafter, when the disk D is taken out, the optical detection member 71B becomes the H level where the optical detection member 71B is in the non-detection state, but the control circuit not only makes the optical detection member 71B in the non-detection state, It is determined that the disk D has been pulled out from the insertion slot when the detection switch S1 is turned OFF. Then, when the detection switch S1 is turned off, the energization to the optical detection members 71A and 71B is stopped, or after a predetermined time has passed since the detection switch S1 is turned off, the optical detection members 71A and 71B are turned on. Stop energization.

Next, in ST7 of FIG. 7, when it is determined that the regular disc has not been normally loaded during the carry-in operation and the operation shifts to the carry-out operation, regardless of changes in the output signals of the optical detection members 71A and 71B. When the object to be unloaded is removed from the conveying roller 41, the movable guide portion 50 is rotated clockwise, and the detection switch S1 is turned off, it is determined that unloading is completed. Then, the energization to the optical detection members 71A and 71B is stopped .

DESCRIPTION OF SYMBOLS 1 Housing | casing 2 Front plate 10 Mechanism unit 14 Trigger member 16a, 16b Positioning member 20 Rotation drive part 23 Turn table 27 Clamper 30a Left side slider 30b Right side slider 40 Conveying mechanism 41 Conveying roller 43 Fixed guide part 50 Movable guide part (movable Element)
71A, 71B Optical detection member S1 Detection switch S2 Limit switch D Regular disc

Claims (4)

In a disk device having an insertion slot into which a disk is inserted, and a transport mechanism that transports the disk, which is provided on the back side of the apparatus with respect to the insertion port,
A movable member that is moved in the thickness direction of the disk by the disk inserted from the insertion port, a contact opening / closing type detection switch that is operated by the movable member that moves in the thickness direction and is switched to a detection state, and the insertion An optical detection member that is in a detection state by being blocked by the optical path blocked by the disc inserted from the mouth,
When the detection switch is switched to a detection state, energization of the optical detection member is started, and then, when both the detection switch and the optical detection member are in a detection state for detecting a disk, the conveyance is performed. The mechanism starts and the disc can be carried into the device .
The optical detection member includes a light-emitting element that emits detection light and a light-receiving element that receives detection light, which are provided so as to face each other with the inserted disk and the movable member interposed therebetween. A disk device, wherein a detection hole through which light passes is formed . The optical sensing member by monitoring the detection output, the disk device according to claim 1, wherein if the disk of the regular size is carried is determined. The disk device according to claim 2 , wherein the optical detection member is disposed at a position where the detection state is continued until the normal-sized disk reaches a normal loading position after being energized. The optical detection member is disposed at one position away from the center line through which the center of the disk carried into the apparatus passes, and the optical detection member is detected when a regular disk reaches a normal loading position. 4. The disk device according to claim 3 , wherein the member faces the inner side of the outer peripheral edge facing the insertion port of the disk.

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