JP2009301689A - Disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a "disk device" capable of easily preventing the occurrence of abnormal noise and damage of a disk, and also easily preventing the disk from being moved until the disk is clamped when the disk is conveyed into the device. <P>SOLUTION: A roller control cam 34B is formed while shifted more than a roller control cam 34A in the direction of Y1. A left side slider 3A and a right side slider 3B are synchronously moved in the direction of Y1 by as much as the same distance, and when a left end part 23a of a roller shaft 23 is located in an upper guide part 34A1 of the roller control cam 34A, a right end part 23b of the roller shaft 23 reaches the inside of a tilting guide hole 34B3. Thus, only a right roller is separated downward from the bottom surface of the disk D. The disk D is conveyed in the direction of Y2 only by the torque of the left roller 21A. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a disk device in which a disk is judged to have been completely loaded when the disk is nipped from both sides by a nipping member and loaded into the apparatus, and the loaded disk hits a detection member.

  In a conventional so-called slot-in type disk device, the disk is sandwiched between a conveyance roller and a synthetic resin guide member, and the disk is carried into the apparatus by the rotational force of the conveyance roller and sent to a predetermined clampable position. . Thereafter, the conveyance roller moves away from the disk in conjunction with the operation of clamping the disk.

  In this type of disk device, even after the disk is fed to a position where it can be clamped and positioned against the stopper member, the power of the motor is transmitted to the roller shaft until the conveying roller leaves the disk. to continue. Therefore, the roller shaft and the transport roller can usually be slipped, but if the power is continuously applied to the roller shaft after the disk is stopped, there is a problem that a sound that the roller shaft and the transport roller slip is generated. Further, the disk may be damaged by the rotational force applied to the conveying roller.

Therefore, in the disk device described in Patent Document 1 below, when the disk is sandwiched between the guide member and the transport roller and carried to a predetermined position, the trigger member is operated by being pushed by the moving disk. When the disc is carried to the clampable position while pushing the trigger member, the moving force of the trigger member operates the slider and the rotating member, and the meshing of the gears that transmit the power of the transport motor is released. As a result, when the conveying roller holds the disk, transmission of rotation to the conveying roller is stopped, and thereafter, a clamping operation of the disk to the turntable is started, and the conveying roller is separated from the disk.
JP 2003-141800 A

  In the disk device described in Patent Document 1, the power to the transport roller is cut off immediately after the disk is loaded to a position where it can be clamped, so that it is easy to prevent the occurrence of slip noise or damage to the disk. .

  However, immediately after the disc is carried to the predetermined clampable position, the carry input from the transport roller to the disc is cut off, so that when the external vibration is applied, the disc vibrates or moves before the clamping operation. There is a drawback that mistakes are likely to occur in the subsequent disk clamping operation.

  The present invention solves the above-described conventional problems, and it is easy to prevent the generation of abnormal noise and damage to the disk when the disk is carried into the apparatus. An object of the present invention is to provide a disk device that is easy to prevent the disk from moving.

In the present invention, at least one of the transport rollers is a pair of transport members that sandwich the disk from both sides to apply a transport force to the disk, and the disk loaded by the rotational force of the transport roller has reached the loading completion position. In a disk device provided with a detection member capable of detecting
When the detection member detects the disk or after that, a holding force adjusting mechanism is provided that reduces the holding force acting on the disk from the transport member at one side of the disk as compared to the other side. It is characterized by this.

  In the present invention, when the clamping force of the disk by the conveying member is lower than the other side at one side of the disk, the rotational force is applied from the conveying roller to the disk that is in contact with the detection member or the other stopper member. Given.

  In the present invention, after the disk is fed to a position where it can be clamped, the clamping force acting on the disk from the pair of conveying members decreases on one side of the disk. As a result, the rotational force around the axis perpendicular to the surface of the disk is caused by the biased feeding force applied to the disk from the conveying roller after the disk is positioned against the detection member or positioned against the stopper member other than the detection member. Is given. Therefore, even after the disk is positioned, the transport roller can continue to rotate, and the occurrence of slip noise between the transport roller and the roller shaft constituting the transport member can be suppressed, or the disk can be easily prevented from being damaged. In addition, even after the disk is positioned, the carrying input continues to be given to the disk from the conveying member, so that the disk becomes difficult to move after reaching the clampable position, and an error occurs in the subsequent clamping operation. Easy to prevent.

  In the present invention, “reducing the clamping force acting on the disk from the transport member on one side of the disk than on the other side” means that the transport force from the transport roller to the disk is sufficient on the other side. Means that on one side, the conveying force applied from the conveying roller to the disk is weaker than the other side, or on one side, substantially no conveying force acts on the disk from the conveying roller. To do.

  In the present invention, the detection member is operated by being pushed by a loaded disk, and the clamping force adjusting mechanism is operated when the detection member moves until the disk reaches the loading completion position or after that. Start.

  In the present invention, when the detection member is pushed by the loaded disk, the disk is moved to the loading completion position. Thereafter, the disk is pressed against the detection member by the conveyance roller until the conveyance roller is separated from the disk. Can do. Therefore, the disc can be prevented from moving from the position where the disc is positioned by the reaction force of the detection member.

  In the present invention, when the detection member is pushed by the disc and moved to a loading position where the disc can be clamped, the power transmission mechanism is connected by the mechanical movement of the detection member, and the clamping force adjustment mechanism is started. . Alternatively, when the detection member is pushed by the disk, an electrical or optical switch may be operated, and the motor may be started by the switch operation to start the clamping force adjusting mechanism.

  In the invention, it is preferable that the detection member is provided at a position away from a center line through which the center of a loaded disc passes to one side, and the holding force adjusting mechanism includes the detection member sandwiching the center line. It is preferable that the clamping force acting on the disk is reduced on the side opposite to the provided side.

  In the present invention, the carry input is given at a position biased with respect to the disk. At this time, a large force acts on the disk from the conveying roller on the same side as the disk hits the detection member. However, it becomes easy to act so as to press the detection member. For this reason, the disc becomes difficult to move due to the reaction force of the detection member, and the disc positioning effect can be enhanced.

  In the present invention, the clamping force adjusting mechanism is provided with a switching member that moves both end portions of the conveying member between a clamping position where the conveying member is in contact with a clamping release position away from the disk, and the detection member is a disk. Or after that, one end of the conveying member is moved away from the disk by the moving force of the switching member, and then both ends of the conveying member are moved to the nipping release position. It is done.

  That is, according to the present invention, when the detection member detects that the disk has reached the carry-in completion position, both switching members are started synchronously by the power of the motor, and the cams provided on the respective switching members The positions of both end portions of the transport member are controlled.

  As described above, by the moving force of the switching member provided on the left and right of the conveying member, the conveying member is positioned so that both ends are pressed against the disk, and one end is weaker than the other end. Therefore, the holding force adjusting mechanism can be configured simply, and the operation timing can be set with high accuracy.

  In the disk device of the present invention, it is detected by the movement of the detection member that the disk has been carried into the device, and then the conveying roller is separated from the disk while the disk is positioned against the detection member or other stopper member. Until then, the carrying input is continuously given to the disk from the carrying roller. For this reason, it becomes difficult to shift the position until the disk is clamped. In addition, at this time, since the rotational force is applied to the disk by the transport force of the transport roller, the transport roller is not forcibly stopped, the occurrence of abnormal noise can be prevented, and the disk can be easily prevented from being damaged.

  FIG. 1 is a plan view showing the main part of a disk device according to an embodiment of the present invention, and shows the middle of a disk loading operation. 2A and 2B are side views in the state of FIG. 1, where FIG. 2A is a left side view and FIG. 2B is a right side view. FIG. 3 is a cross-sectional view of the disk device, showing a state in which the disk begins to be loaded. In each figure, the X1 side is the right side, the X2 side is the left side, 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.

  As shown in FIG. 3, the disk device 1 is for in-vehicle use and has a housing 10 of 1 DIN size or 1/2 DIN size. The housing 10 is formed by bending a metal plate, and a slit-like insertion port 11 is opened on the front surface facing in the Y1 direction. A nose portion (not shown) having a liquid crystal display panel and various switches is provided on the front surface, and a slit-like insertion port leading to the insertion port 11 is provided in the nose portion.

  The mechanism unit 2 shown in FIG. 1 is provided inside the housing 10. A disc D such as a DVD (digital versatile disc) having a diameter of 12 cm is supplied into the housing 10 from the insertion slot 11 and loaded into the mechanism unit 2.

  As shown by a dotted line in FIG. 1, a clamp base 9 is provided on the Z1 side of the mechanism unit 2, and a drive base (not shown) is opposed to the lower side of the clamp base 9. The drive base is elastically supported inside the housing 10 via elastic support members 70, 70, 70. The elastic support member 70 is an oil damper. In addition, in FIG. 1, the elastic support member 70 provided in two places is shown in figure.

  The end of the clamp base 9 on the Y2 side is rotatably supported with a support shaft provided on the drive base as a fulcrum. The clamp base 9 is urged counterclockwise in FIG. 3 by a clamp spring (not shown).

  As shown in FIG. 3, a rotational drive unit 4 is provided at the tip of the drive base on the Y1 side. In the rotation drive unit 4, a spindle motor is fixed on the drive base, and a turntable 7 is fixed to a rotation shaft of the spindle motor. The drive base is provided with a head portion and is movable along the recording surface of the disk D placed on the turntable 7. The drive base is provided with a sled drive mechanism for moving the head portion in the radial direction of the disk D.

  As shown in FIGS. 1 and 3, a clamper 6 facing the turntable 7 is rotatably provided on the lower surface of the tip portion on the Y1 side of the clamp base 9. When the clamp base 9 is rotated counterclockwise by the urging force of the clamp spring, the clamper 6 comes into a clamping posture in pressure contact with the turntable 7, and when the clamp base 9 is lifted, the clamper is released from the turntable 7. Become posture.

  As shown in FIGS. 1 and 2A, a pair of stopper members 12 projecting downward are provided on the left and right sides of the clamp base 9. In FIG. 1, the center line that bisects the loading area of the disk D in the width direction is indicated by OO, but the pair of stopper members 12 are provided at the same distance on the left and right with the center line OO interposed therebetween. It has been. Each stopper member 12 is formed of a metal pin or the like fixed to the lower surface of the clamp base 9.

  As shown in FIG. 1, a motor M is provided on the left rear side of the mechanism unit 2, a left side slider 3 </ b> A as a first switching member is provided on the left side of the mechanism unit 2, and a second slider is provided on the right side. A right side slider 3B which is a switching member is provided. The motor M is fixed on the lower surface of the housing 10, and the left side slider 3 </ b> A and the right side slider 3 </ b> B are supported inside the side plates located on the X <b> 1 side and the X <b> 2 side of the housing 10.

  As shown in FIG. 2A, the left slider 3A is formed with two guide slots 33A linearly extending in the Y1-Y2 direction, and is provided on the support shaft fixed to the side plate of the housing 10. The guide slot 33A is inserted, and the left slider 3A is supported so as to be linearly movable in the Y1-Y2 direction. Similarly, as shown in FIG. 2 (B), the right side slider 3B is also provided with guide long holes 33B extending linearly in the Y1-Y2 direction at two locations, and is provided on the side plate of the housing 10. The right side slider 3B is inserted through the shaft and supported so as to be linearly movable in the Y1-Y2 direction.

  The left side slider 3A and the right side slider 3B are connected by a link mechanism described later, and are moved together in the same Y1 direction and the same Y2 direction in synchronization. In the state of waiting for the disc insertion shown in FIG. 1, both the left side slider 3A and the right side slider 3B are moved in the Y2 direction. In the state where the disc loading and clamping shown in FIG. Both 3A and the right side slider 3B are moved in the Y1 direction.

  As shown in FIG. 2A, the left slider 3A is integrally formed with a clamp lifting portion 31 for lifting the clamp base. As shown in FIG. 2B, the right slider 3B has A clamp lifting cam 32 for lifting the clamp base is integrally formed. The clamp lifting cam 32 has a lifting portion 32a positioned on the Z1 side toward the Y1 side, and a clearance hole 32b positioned on the Y2 side.

  As shown in FIGS. 1 and 2A and 2B, in the state of waiting for the insertion of the disk, both the left side slider 3A and the right side slider 3B are moved in the Y2 direction, and the clamp lifting portion 31 is It enters below the lifting piece of the clamp base 9 and presses the lifting piece upward. Further, as shown in FIG. 4, the control pin 5 provided at the end of the clamp base 9 on the Y1 side is positioned in the lifting portion 32 a of the clamp lifting cam 32. Therefore, the clamp base 9 is lifted, and the clamper 6 is in the clamp release posture in which the clamper 6 is separated above the turntable 7.

  When the motor M is driven from the state shown in FIG. 1, the left side slider 3A is moved in the Y1 direction via a power transmission unit described later, and in conjunction with this, both the right side sliders 3B are moved in the Y1 direction. Moved. At this time, the clamp lifting portion 31 is separated from the lifting piece of the clamp base 9, and the control pin 5 is released from the lifting portion 32a of the clamp lifting cam 32 and moves into the escape hole 32b. Accordingly, the lifting of the clamp base 9 is released, and the clamp base 9 is rotated to the clamp posture by the elastic force of the clamp spring.

  As shown in FIGS. 2, 3, and 5, a transport mechanism 20 is provided between the insertion port 11 and the rotation drive unit.

  The transport mechanism 20 is configured such that two transport members are pressed against each other, and the disk D is sandwiched and transported between the two transport members. One transport member constituting the transport mechanism 20 is a transport roller 21, and the other transport member is a fixed guide portion 22 that faces the Z 1 side of the transport roller 21.

  The fixed guide portion 22 is formed of a synthetic resin material having a small friction coefficient, and is fixed so as not to move on the lower surface of the ceiling plate of the housing. The lower surface of the fixed guide portion 22 is a guide surface 22a extending horizontally in the Y1-Y2 direction.

  As shown in FIG. 1, the transport roller 21 is a combination of a left roller 21 </ b> A that functions as a first clamping unit and a right roller 21 </ b> B that functions as a second clamping unit. The left roller 21A and the right roller 21B are formed of a material having a large friction coefficient such as synthetic rubber. The left roller 21 </ b> A and the right roller 21 </ b> B are independent from each other, and are attached to the outer periphery of the roller shaft 23 without being bonded. Further, both the rollers 21A and 21B have gradually larger diameters on both end sides than the diameters on the side close to the center line OO, and the circumferential surfaces are tapered.

  The left and right ends 23 a and 23 b of the roller shaft 23 are supported by the roller bracket 24. The roller bracket 24 is formed of a metal plate. As shown in FIG. 5, the roller bracket 24 includes a left side support 24a formed on the X2 side, a left side front part 24b extending upward from a front side on the Y1 side of the left side support 24a, as shown in FIG. , A right support portion 24c formed on the X1 side and a right front portion 24d extending upward from a Y1 side front portion of the right support portion 24c.

  As shown in FIG. 5, a support hole 24e is opened in the left front portion 24b, and a support hole 24f is opened in the right front portion 24d as shown in FIG. The center of the support hole 24e and the center of 24f are located on an axis parallel to the X1-X2 axis. A pair of short support shafts 25, 25 are fixed inside the left and right side plates of the housing 10, support holes 24 e, 24 f are supported by the respective support shafts 25, 25, and the roller bracket 24 is supported by the support shaft 25. , 25 are pivotally supported around a pivot point. A tension coil spring (not shown) is hung between the roller bracket 24 and the bottom plate of the housing, and the roller bracket 24 is always urged counterclockwise (α1 direction) shown in FIG. .

  As shown in FIG. 5, a holding hole 24g is formed at the Y2 side end of the left support 24a of the roller bracket 24. Similarly, as shown in FIG. 3, the Y2 side end of the right support 24c is also formed at the end of the right support 24c. Similarly, a holding hole 24g (not shown) is opened. The left and right ends 23a and 23b of the roller shaft 23 are inserted into the holding holes 24g, respectively. The inner diameter of each holding hole 24g is sufficiently larger than the diameters of the both ends 23a and 23b of the roller shaft 23, Both end portions 23a and 23b of the roller shaft 23 can move up and down within the holding hole 24g. As shown in FIG. 3, in the state of waiting for the insertion of the disk D, the roller bracket 24 is urged in the α1 direction by the elastic force of the tension coil spring, and this urging force is applied to the roller shaft 23 from the holding hole 24g. Both end portions 23 a and 23 b are given to both end portions 23 a and 23 b and are pressed toward the fixed guide portion 22.

  As shown in FIGS. 3 and 5, the roller bracket 24 is provided with an opposing guide portion 24h that connects the upper edge of the left support portion 24a and the upper edge of the right support portion 24c. That is, the left support portion 24a is formed by being bent at a right angle downward on the X2 side of the opposing guide portion 24h, and the right support portion 24c is formed by being bent at a right angle on the X1 side of the opposite guide portion 24h. The guide surface 24i on the upper surface of the opposing guide portion 24h is a flat surface.

  As shown in FIGS. 2A and 5, a roller control cam 34A is formed on the Y1 side of the left side slider 3A, and the left end 23a of the roller shaft 23 is inserted into the roller control cam 34A. Yes. Similarly, as shown in FIG. 2B, a roller control cam 34B is also formed on the right side slider 3B, and the right end 23b of the roller shaft 23 is inserted into the roller control cam 34B.

  As shown in FIG. 5, the roller control cam 34A formed on the left side slider 3A is formed on the upper guide portion 34A1 formed on the upper side (Z1 side) in Y1 and on the Y2 side and lower side than that. The lower restraint portion 34A2 and the inclined guide hole 34A3 continuous with the upper guide portion 34A1 and the lower restraint portion 34A2. The upper guide portion 34A1 is formed such that the upper and lower opening widths of the tip portion 34A0 on the Y2 side are larger than the diameter size of the left end portion 23a of the roller shaft 23, but the tip portion 34A0 and the inclined guide hole 34A3 In the boundary portion 34A4, the upper and lower width dimensions are formed wider than the upper and lower dimensions of the tip portion 34A0.

  As shown in FIG. 2B, the roller control cam 34B includes an upper guide portion 34B1 formed on the upper side (Z1 side) on the Y1 side, and a lower restraint formed on the Y2 side and lower side than that. Part 34B2, and an inclined guide hole 34B3 continuous to the upper guide part 34B1 and the lower restraint part 34B2. The upper and lower guide portions 34 </ b> B <b> 1 have an upper and lower width dimension that is larger than the diameter dimension of the right end portion 23 b of the roller shaft 34.

  In FIG. 5, the roller control cam 34B formed on the right side slider 3A is projected onto the right side slider 3B with the position in the Y1-Y2 direction as it is, and is indicated by a broken line.

  As shown in FIG. 5, the roller control cam 34B formed on the right side slider 3B is displaced in the Y1 direction from the roller control cam 34A formed on the left side slider 3A. In the roller control cam 34A of the left slider 3A, a boundary 34A4 is formed at a position separated by a distance L1 from the Y1 end in the Y2 direction, whereas at the corresponding position of the roller control cam 34B. An inclined guide hole 34B3 is formed.

  In this embodiment, the roller control cam 34A, the roller control cam 34B, the roller bracket 24, and the roller shaft 23 constitute a holding force adjusting mechanism that adjusts the force for holding the disk D between the transport roller 21 and the fixed guide portion 22. Has been.

  As shown in FIGS. 1 and 3, a power transmission mechanism that converts the power of the motor M into the moving force of the left slider 3 </ b> A is provided on the bottom surface of the housing 10.

  A transmission gear 41 is provided in the power transmission mechanism. The transmission gear 41 is integrally formed with a large gear 41A on the upper side (Z1 side) and a small gear 41B (not shown) on the lower side (Z2 side). A worm gear M1 is fixed to the output shaft of the motor M. The worm gear M1 meshes with the large gear 41A, and the rotational force of the motor M is transmitted to the transmission gear 41.

  A detection member 14 is provided on the back side of the mechanism unit 2. The detection member 14 has a detection pin 14A extending in the vertical direction and a support plate 14B that supports the detection pin 14A. The detection pin 14A is erected across the carry-in route of the disk D. The support plate 14B is rotatably supported by a support shaft 14a fixed in the housing 10. The detection pin 14A is provided at a position farther to the X2 side than the center line OO. As shown in FIG. 1, the detection member 14 is urged clockwise by a spring.

  A trigger drive gear 42 is provided between the transmission gear 41 and the detection member 14. Although the outer periphery of the trigger drive gear 42 is a tooth portion 42a, as shown in FIGS. 4 and 7, a part of the outer periphery is a missing tooth portion 42b. The tooth portion 42a can mesh with the small gear 41B of the transmission gear 41. However, when the toothless portion 42b faces the small gear 41B, the meshing between the transmission gear 41 and the trigger drive gear 42 is cut off. . An upper cam 42c that is a groove cam is formed on the upper surface side of the trigger drive gear 42, and a lower cam that is a groove cam is provided on the lower surface side. The support plate 14B of the detection member 14 is provided with an arm 14C extending on the opposite side of the detection pin 14A with the support shaft 14a interposed therebetween, and a sliding projection provided on the arm 14C is slidable on the lower cam. Has been inserted.

  When the detection pin 14A is pushed at the peripheral edge of the disk D carried into the inside of the housing 10 and the detection member 14 rotates counterclockwise, the sliding convex portion provided on the arm 14C causes the lower cam to move. It slides and the trigger drive gear 42 is rotated clockwise. At this time, the missing tooth portion 42b of the trigger driving gear 42 is disengaged from the small gear 41B of the transmission gear 41, and the tooth portion 42a of the trigger driving gear 42 is engaged with the small gear 41B, so that the transmission gear 41 drives the trigger driving gear 42. Power is given.

  A connecting gear 43 is provided on the Y1 side of the transmission gear 41. As shown in FIG. 3, the connecting gear 43 has a driving small gear 43 </ b> A that protrudes upward at the center of rotation, and a large gear 43 </ b> B positioned below the driving small gear 43 </ b> A. The drive small gear 43A and the large gear 43B are integrally formed and rotate together.

  As shown in FIG. 1 and the like, the large gear 43B of the connection gear 43 is provided with a connection cam 43a formed by a continuous groove that is recessed downward from the upper surface. As shown in FIG. 4, a continuous tooth portion 43b is provided on the outer periphery of the large gear 43B, and a missing tooth portion 43c is formed on a part of the outer peripheral portion. The tooth portion 43b of the large gear 43B meshes with the tooth portion of the small gear 41B of the transmission gear 41, but when the missing tooth portion 43c faces the small gear 41B, the transmission gear 41 to the large gear 43B Power transmission is cut off.

  An auxiliary connecting member 45 is provided between the trigger driving gear 42 and the connecting gear 43. The auxiliary connecting member 45 is rotatably supported by a support shaft 45 a fixed in the housing 10. As shown in FIG. 3, a sliding convex portion 45 b that protrudes downward is formed at the tip of the arm portion on the Y <b> 2 side of the auxiliary connecting member 45, and the sliding convex portion 45 b is the trigger driving gear 42. The upper cam 42c is slidably inserted.

  A sliding convex portion 45d that protrudes downward is also formed at the tip of the arm portion on the Y1 side of the auxiliary connecting member 45, and this sliding convex portion 45d is formed on the large gear 43B of the connecting gear 43. The connecting cam 43a is slidably inserted.

  A rotating member 44 is provided on the Y1 side of the connecting gear 43. As shown in FIG. 3, the rotating member 44 is rotatably supported by a support shaft 44 a provided in the housing 10. The rotating member 44 is formed by integrating a holding member 44A supported by a support shaft 44a and a power conversion unit 44B projecting laterally from the holding member 44A. The power conversion unit 44B has a shape that is overlapped and integrated with the Z1 side of the holding member 44A. The holding member 44A is integrally formed with a holding projection 44C protruding in the Y1 direction.

  The power converter 44B has a fan-shaped outer shape, and a tooth portion 44b is formed on the side surface on the Y2 side. The tooth portion 44b is provided along a part of an arc locus centering on the axis of the support shaft 44a. The tooth portion 44 b always meshes with a tooth portion 43 d formed on the drive small gear 43 </ b> A of the connection gear 43. Therefore, when the connecting gear 43 rotates in the clockwise direction, the rotating member 44 is rotated in the counterclockwise direction.

  As shown in FIG. 1, the left slider 3A is formed with a drive piece 36A protruding in the X1 direction. A drive cam 37A is formed on the drive piece 36A. The drive cam 37A is a cam hole penetrating vertically, and a non-moving part 37a and a moving part 37b are continuously formed.

  As shown in FIG. 1, the non-moving part 37a is formed along a part of an arc shape centering on the support shaft 44a of the rotating member 44 when the left slider 3A is moving in the Y2 direction. The moving part 37b is formed in a linear shape extending in the X1-X2 direction. A drive shaft 44c that protrudes upward is provided at the end of the power conversion portion 44B of the rotating member 44 on the X2 side. The drive shaft 44c is slidably inserted into the drive cam 37. Yes.

  As shown in FIG. 1 and the like, a link slider 46 is provided on the bottom surface side and the Y1 side of the mechanism unit 2 so as to be movable in the X1-X2 direction.

  As shown in FIG. 7, a connecting hole 46 a is formed at the end of the link slider 46 on the X2 side. A connecting protrusion that protrudes downward is formed at the tip of the holding projection 44C of the rotating member 44. The connecting protrusion is inserted into the connecting hole 46a, and the rotating member 44 and the link slider 46 are connected. Has been.

  A transmission hole 46b is formed at the end of the link slider 46 on the X1 side. A reversing lever 47 is provided below the end of the link slider 46 on the X1 side. As shown in FIG. 1, the reversing lever 47 has a boomerang shape, and is rotatable in the b1-b2 direction around a support shaft 47a.

  A transmission shaft 47 b protrudes upward from the tip of the short arm portion 47 </ b> A of the reversing lever 47, and the transmission shaft 47 b is inserted into the transmission hole 46 b of the link slider 46, and the link slider 46 and the reversing lever 47. Are connected.

  A drive shaft 47c protrudes upward from the tip of the long arm portion 47B of the reversing lever 47. A driving piece 36A that protrudes in the X2 direction is formed on the right side slider 3B. A drive cam 37B is formed on the drive piece 36A. The drive cam 37B is a cam hole penetrating vertically, and a non-moving part 37c and a moving part 37d are continuously formed. A drive shaft 47c is slidably inserted into the drive cam 37B.

  As shown in FIG. 1, the non-moving part 37c coincides with a part of an arc shape centered on the support shaft 47a when the right slider 3B is moved to the Y2 side. The moving part 37d has a linear shape extending in the X1-X2 direction.

  As shown in FIG. 3, a relay gear 53 is provided under the connecting gear 43 so as to overlap with the connecting gear 43. The connection gear 43 and the relay gear 53 are rotatably supported on a common support shaft 52 provided in the housing 10. The connecting gear 43 and the relay gear 53 can rotate independently of each other, and the large gear 43B of the connecting gear 43 and the relay gear 53 have the same radius of the pitch circle of the gear. And the tooth part of the outer periphery of the relay gear 53 is always meshed with the small gear 41B of the transmission gear 41 together with the tooth part 43b of the large gear 43B.

  As shown in FIG. 1 and the like, the relay gear 53 always meshes with the spur gear 48 located on the Y1 side. A compound gear 49 in which a spur gear 49 a and a bevel gear 49 b are integrated is rotatably provided on the Y1 side of the spur gear 48, and the spur gear 49 a meshes with the spur gear 48. Above the compound gear 49, a lateral compound gear 50 in which a spur gear 50a for driving a roller and a bevel gear 50b are integrated is rotatably provided. A support shaft fixed to the side plate of the housing 10 is inserted into a guide elongated hole 33A formed in the left slider 3A. The lateral compound gear 50 is rotatably supported by the support shaft. The bevel gear 49b and the bevel gear 50b are always meshed with each other.

  A pinion gear 51 is fixed to the left end portion of the roller shaft 23. As shown in FIG. 3, when the roller bracket 24 rotates in the α1 direction and the disk D can be held between the transport roller 21 and the fixed guide portion 22, the pinion gear 51 and the spur gear 50a for driving the roller Engage.

Next, the operation at the time of disk loading in the disk device 1 will be described.
FIG. 4 shows a state immediately after the peripheral edge of the loaded disc is positioned by hitting the stopper member. 5 is a left side view in the state of FIG. 4, and FIG. 6 is a right side view in the state of FIG. 7 is a plan view showing a state in which the disc is clamped on the turntable, FIG. 8 is a side view in the state of FIG. 7, (A) is a left side view, and (B) is a right side view. .

  As shown in FIG. 1, in the disc insertion standby state before the disc D is carried into the apparatus, the trigger drive gear 42 is at the end of rotation in the counterclockwise direction, and the tooth missing portion 42b is a small portion of the transmission gear 41. It faces the gear 41B. Further, the support plate 14 </ b> B of the detection member 14 is rotated in the clockwise direction by the lower cam formed on the lower surface of the trigger drive gear 42.

  The trigger driving gear 42 and the connecting gear 43 are connected by an auxiliary connecting member 45, the connecting gear 43 is at the end of rotation in the counterclockwise direction, and a missing tooth portion 43c formed on the large gear 43B of the connecting gear 43 is It faces the small gear 41B of the transmission gear 41.

  In the state of FIG. 1, the rotating member 44 rotates in the a2 direction, the link slider 46 moves most in the X2 direction, and the reversing lever 47 rotates most in the b2 direction. Therefore, the right side slider 3B moves most in the Y2 direction, like the left side slider 3A. Therefore, in the disc insertion standby state shown in FIG. 1, both the left side slider 3A and the right side slider 3B are moved in the Y2 direction. 2 (A) and 2 (B), the clamp base 9 is lifted, and the clamper 6 is in a clamp release posture in which the clamper 6 is separated above the turntable 7.

  Further, since the left slider 3A is moved in the Y2 direction, as shown in FIG. 2A, the left end 23a of the roller shaft 23 is in the upper guide 34A1 of the roller control cam 34A. Similarly, since the right side slider 3B is also moved in the Y2 direction, as shown in FIG. 2B, the right end 23b of the roller shaft 23 is in the upper guide portion 34B1 of the roller control cam 34B. Therefore, as shown in FIG. 3, the roller bracket 24 is rotated in the α1 direction by the biasing force of the spring member, and the roller shaft 23 is moved in the Z1 direction by the biasing force of the spring member acting on the roller bracket 24. The conveying roller 21 is pressed against the fixed guide portion 22.

  In the standby state, when the disk D is inserted from the insertion port 11 in the Y2 direction and the insertion detection switch (not shown) detects that the disk D has been inserted, the motor M is started.

  The power of the motor M is transmitted from the worm gear M1 to the small gear 41B of the transmission gear 41, and the transmission gear 41 is driven to rotate counterclockwise. In the standby state of FIG. 1, the tooth missing portion 42 b of the trigger driving gear 42 and the tooth missing portion 43 c of the connecting gear 43 are both opposed to the small gear 41 B, and the rotational force of the transmission gear 41 is the same as that of the trigger driving gear 42. It is not transmitted to the connecting gear 43. However, since the relay gear 53 (see FIG. 3) provided on the lower side of the connecting gear 43 meshes with the small gear 41B, the rotational force of the transmission gear 41 is transmitted only to the relay gear 53.

  The rotational force of the connecting gear 43 is applied to the spur gear 48 from the small gear 41B through the relay gear 53. The rotational force of the spur gear 48 is transmitted from the compound gear 49 to the lateral compound gear 50. In the standby state, the pinion gear 51 fixed to the roller shaft 23 is meshed with the compound gear 50. Therefore, when the motor M starts, the roller shaft 23 rotates in the disk loading direction (clockwise in FIG. 3).

  The peripheral edge portion on the Y2 side of the disk D inserted from the insertion port 11 is guided between the transport roller 21 and the fixed guide section 22, and the disk D is carried in the Y2 direction by the rotational force of the transport roller 21. As shown in FIG. 1, the conveying roller 21 has a tapered shape in which both the left roller 21 </ b> A and the right roller 21 </ b> B have a small diameter at the center line OO and become thicker toward both ends. Therefore, the left edge of the disk D is sandwiched between the left roller 21 </ b> A and the fixed guide 22, and the right edge is sandwiched between the right roller 21 </ b> B and the fixed guide 22. The rotational force of the roller shaft 23 is transmitted to the rollers 21A and 21B by the frictional force between the roller shaft 23 biased upward and the rollers 21A and 21B, and the rotational force of the rollers 21A and 21B. The disk D is carried in the Y2 direction.

  As shown in FIG. 1, when the center of the loaded disk D advances to a position slightly on the Y1 side from the center of the turntable 7, the detection pin 14A is moved in the Y2 direction by the peripheral edge facing the Y2 side of the disk D. It begins to be pressed. When the disk D further moves in the Y2 direction, the detection member 14 is rotated counterclockwise against the spring force, as shown in FIG. When the detection member 14 is rotated to the position shown in FIG. 4, the peripheral edge of the disk D facing the Y2 side is positioned against the stopper members 12 and 12, and at this time, the center of the disk D is the center of the turntable 7. Almost matches.

  When the support plate 14B rotates counterclockwise, the sliding convex portion provided on the support plate 14B slides in the lower cam of the trigger drive gear 42, which causes the trigger drive gear 42 to move clockwise. Rotated in the direction. Therefore, as shown in FIG. 4, the toothless portion 42b of the trigger drive gear 42 is disengaged from the position facing the small gear 41B of the transmission gear 41, and the tooth portion 42a of the trigger drive gear 42 meshes with the small gear 41B.

  Immediately after the teeth 42a of the trigger drive gear 42 mesh with the small gear 41B, the lower member cam provided on the lower surface of the trigger drive gear 42 holds the detection member 14 so as not to move in the posture shown in FIG. .

  As shown in FIG. 1, the upper cam 42c of the trigger drive gear 42 is formed with an inclined portion 42c2 extending in the direction of the center of rotation of the trigger drive gear 42 from the holding portion 42c1. . When the trigger drive gear 42 rotates in the clockwise direction, the sliding projection 45b on the Y2 side of the auxiliary connecting member 45 is guided to the rotation center side by the inclined portion 42c2 of the upper cam 42c, and as shown in FIG. The member 45 is rotated counterclockwise about the support shaft 45a.

  When the auxiliary connecting member 45 is rotated counterclockwise, the sliding protrusion 45d provided on the Y1 side of the auxiliary connecting member 45 slides inside the holding portion 43a1 of the connecting cam 43a. By this sliding, the large gear 43B of the connecting gear 43 is rotated in the clockwise direction, and the missing tooth portion 43c of the connecting gear 43 is disengaged from the small gear 41B of the transmission gear 41 as shown in FIG. 43b meshes with the small gear 41B.

  Thereafter, the trigger driving gear 42 and the connecting gear 43 are rotated by the rotational force of the transmission gear 41. However, the sliding convex portion 45b of the auxiliary connecting member 45 slides on the concentric holding portion 42c3 of the upper cam 42c, and the sliding convex portion 45d slides on the concentric holding portion 43a2 of the connecting cam 43a. Therefore, the posture of the auxiliary connecting member 45 does not change.

  The rotational force of the connecting gear 43 in the clockwise direction is transmitted from the driving small gear 43A to the power conversion unit 44B of the rotating member 44, and the rotating member 44 rotates counterclockwise. At this time, the drive shaft 44c of the rotating member 44 slides on the non-moving portion 37a and the moving portion 37b of the driving cam 37A, and the left slider 3A moves in the Y1 direction as shown in FIGS. Begin to. Further, the link slider 46 connected to the holding projection 44C moves in the X1 direction by the counterclockwise (a1 direction) rotational force of the rotating member 44, and the reverse lever 47 is moved in the b1 direction by the transmission hole 46b of the link slider 46. Can be rotated. The driving shaft 47c slides on the non-moving portion 37c and the moving portion 37d of the driving cam 37B by the turning force of the reversing lever 47 in the b1 direction, and as shown in FIGS. 4 and 6, the right slider 3B moves in the Y1 direction. Start moving. At this time, the right side slider 3B starts to move in the Y1 direction in synchronization with the left side slider 3A.

  FIG. 5 shows a moment when the left side slider 3A and the right side slider 3B are synchronously moved in the Y1 direction by a distance L1. At this time, the left end portion 23a of the roller shaft 23 is in the upper guide portion 34A1 of the roller control cam 34A. At this time, the urging force in the α1 direction acting on the roller bracket 24 is the left side of the roller shaft 23. It acts on the end 23a, and the left peripheral edge of the disk D is sandwiched between the left roller 21A and the fixed guide 22.

  On the other hand, the roller control cam 34B is formed so as to be shifted in the Y1 direction from the roller control cam 34A. Therefore, at the time of FIG. The right end portion 23b of the roller shaft 23 is pushed down in the Z2 direction, and the right roller 21B is separated from the right peripheral portion of the disk D. At the time of FIG. 5, since the left end 23a of the roller shaft 23 has moved into the wide boundary 34A4 above and below the upper guide 34A1 of the roller control cam 34A, the roller shaft 23 has the right end 23b. It is easy to tilt down.

  Thus, while the left slider 3A and the right slider 3B move by the distance L1 in the Y1 direction, the clamping force of the disk D by the left roller 21A and the fixed guide portion 22 does not change, but the right roller 21B and the fixed guide The clamping force of the disk D by the portion 22 is weaker than that on the left side, and further, the clamping force of the disk D by the right roller 21B and the fixed guide portion 22 is released.

  A moving force in the Y2 direction continues to act on the left peripheral edge of the disk D from the left roller 21A and the fixed guide portion 22, while a feed force in the Y1 direction acts on the right peripheral edge of the disk D from the right roller 21B. Decreases or is released, the clockwise rotation is applied to the disk D from the left roller 21A. Therefore, the disk D rotates clockwise so that the peripheral edge slides with the stopper members 12 and 12 and the detection pin 14A. In this way, the rotational force of the left roller 21A is converted into the rotational force of the disk D while moving by the distance L1, so that the disk D remains in contact with the stopper members 12, 12 and the detection pin 14A. In addition, it becomes difficult for slip to occur between the left roller 21A and the disk D, and it is easy to prevent occurrence of slip noise and damage to the disk D.

  Further, since the disk D is pressed against the stopper members 12 and 12 and the detection pin 14A, the disk D moves in the Y1 direction due to vibration or the like while the left slider 3A and the right slider 3B move by the distance L1 in the Y1 direction. It becomes difficult to maintain the state in which the disk D is positioned.

  The detection pin 14A is located on the X2 side with respect to the center line OO, and the left roller 21A located on the X2 side presses the edge on the X2 side of the disk D in the Y2 direction, and rotates clockwise with respect to the disk D. Therefore, it is easy to press the disk D against the detection pin 14A. Therefore, for example, even when the clockwise biasing force is applied to the detection member 14, it is difficult for the detection member 14 to return the disk D to the Y1 direction.

  When the left side slider 3A and the right side slider 3B further move in the Y1 direction from the state shown in FIG. 5, the left end 23a of the roller shaft 23 is pushed down by the inclined guide hole 34A3 of the roller control cam 34A of the left side slider 3A. As a result, the left roller 21A moves away from the disk D, and the conveying force to the disk D is cut off.

  Thereafter, the left end 23a of the roller shaft 23 is held by the lower restraining portion 34A2 of the roller control cam 34A as shown in FIG. 8 (A), and the right end 23b is held as shown in FIG. 8 (B). Before being held by the lower restraining portion 34B2 of the roller control cam 34B, the clamp lifting portion 31 provided on the left side slider 3A is separated from the clamp base 9 and before that, the clamp lifting cam provided on the right side slider 3B. Since the restraint of the control pin 5 of the clamp base 9 by 32 is released, the clamp base 9 is rotated by the spring force, and the disc D is clamped by the clamper 6 and the turntable 7.

  In this way, the clamping of the disk D is completed immediately after the left roller 21A is separated from the disk D from the state of FIG. 5, so that the disk D is securely clamped on the turntable 7.

  Further, while the left slider 3A and the right slider 3B move in the Y1 direction, the detection member 14 is rotated counterclockwise by the lower cam formed on the lower surface of the trigger drive gear 42 as shown in FIG. It is moved and leaves | separates from the outer periphery of the disc D to which the detection pin 14A is clamped.

  Then, as shown in FIG. 7, when the left side slider 3A and the right side slider 3B are moved most in the Y1 direction, it is detected by a limit switch (not shown) that the position has been reached, and the motor M stops.

The top view which shows the principal part of the disc apparatus of embodiment of this invention, (A) is a left side view in the state of FIG. 1, (B) is a right side view in the state of FIG. It is sectional drawing of a disc apparatus, and the figure which shows the state which begins to carry in a disc, A plan view showing a state when the right roller is separated from the disk, FIG. 5 is a left side view in the state of FIG. FIG. 5 is a right side view in the state of FIG. A plan view showing the state when the disc is clamped, (A) is a left side view in the state of FIG. 7, (B) is a right side view in the state of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Disc apparatus 10 Housing | casing 11 Insert port 3A Left side slider (1st switching member)
3B Right side slider (second switching member)
6 Clamper 7 Turntable 9 Clamp Base 12 Stopper Member 14 Detection Member 14A Detection Pin 21 Conveying Roller 21A Left Roller 21B Right Roller 34A, 34B Roller Control Cam

Claims (6)

A pair of conveying members that at least one is a conveying roller and sandwiches the disk from both sides to impart a conveying force to the disk, and detection that can detect when the disk loaded by the rotating force of the conveying roller has reached the loading completion position In a disk device provided with a member,
When the detection member detects the disk or after that, a holding force adjusting mechanism is provided that reduces the holding force acting on the disk from the transport member at one side of the disk as compared to the other side. A disk device characterized by the above.   When the holding force of the disk by the transport member is lower at one side of the disk than at the other side, a rotational force is applied from the transport roller to the disk that contacts the detection member or the other stopper member. The disk device according to claim 1, wherein   The detection member is operated by being pushed by a loaded disk, and the clamping force adjusting mechanism starts when the detection member moves until the disk reaches the loading completion position or after that. 3. The disk device according to 1 or 2.   The detection member is provided at a position away from the center line through which the center of the loaded disc passes, and the holding force adjusting mechanism is provided with the detection member across the center line. 4. A disk device according to claim 1, wherein the clamping force acting on the disk is reduced on the opposite side.   The clamping force adjusting mechanism is provided with a switching member that moves both end portions of the transport member between a clamping position that is in contact with the disk and a clamping release position that is away from the disk, and when the detection member detects the disk Or thereafter, one end of the transport member is moved away from the disk by the moving force of the switching member, and thereafter both ends of the transport member are moved to the clamping release position. 5. The disk device according to any one of 4 to 4.   When the detection member detects that the disk has reached the carry-in completion position, both switching members are started synchronously by the power of the motor, and the cams provided on the respective switching members are used to 6. The disk device according to claim 5, wherein the positions of both ends are controlled.

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