JP2010282694A - Disk device including self-clamp mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide "a disk device including self-clamp mechanism" in which the center part of a disk can be held at a rotation drive part by decreasing the number of parts constituting the rotation drive part. <P>SOLUTION: The rotation drive part 82 is elevated while keeping the non-clamp attitude of a clamp member 201 as it is, a protrusion part 82c is inserted into the center hole Da of the disk D, and the protrusion part 82c is pressed against the recessed part 102d of a lower end part of upper regulating member 102 to regulate the rotation of the rotation drive part 82. In this state, a clamp transmission member 211 is moved, a switching rotation part 203 is rotated by this moving force, a clamp cam is operated, and the clamp member 201 is protruded to form a clamp attitude. Since the rotation of the rotation drive part 82 is regulated by utilizing the upper regulating member 102, the self-clamp mechanism can be operated with a small number of the parts. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a disk device including a self-clamping mechanism in which a disk is clamped to a rotation driving unit by a clamp member provided in the rotation driving unit.

  In a disk device for in-vehicle use or the like, a disk inserted from an insertion opening opened in the housing is carried into the housing by a transfer roller, and the central portion of the loaded disk is clamped to the rotation driving unit. As described in Patent Documents 1 and 2 below, the clamp mechanism is provided with a clamper facing the rotation drive unit and the center of the disk is sandwiched between the rotation drive unit and the clamper. There is a so-called self-clamping mechanism that is provided so that the clamp member can protrude from the rotary drive unit, and the center hole of the disk is held by the protruding clamp member.

  In the self-clamp mechanism described in Patent Document 1, a plurality of clamp members are rotatably supported inside a convex portion that is provided in the rotation drive unit and enters the center hole of the disc. However, the clamp spring is biased toward the clamping posture for clamping the disc. In addition, the rotation drive unit is provided with a switching rotation unit having a clamp cam for controlling the posture of the clamp member. When rotating the clamp member toward the clamp posture, the lock drive member is used to lock the rotation drive unit so that it does not rotate, the switch drive member is rotated to rotate the switch rotation unit, and the clamp member is clamped by the clamp cam. It is turned toward

JP 2006-294176 A JP 2008-71437 A

  As described in Patent Document 1, the conventional self-clamp mechanism has two drive units, a lock mechanism that operates a lock member and a switching drive member that rotates the switching rotation unit. It is necessary to install a mechanism. Therefore, the number of parts constituting the drive unit and the rotation drive unit increases, and it becomes difficult to make the drive unit thin.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-described conventional problems, and to provide a disk device provided with a self-clamp mechanism that can change the posture of a clamp member provided in a rotary drive unit with a small number of parts. Yes.

The present invention relates to a disk apparatus having a rotation drive unit to which a center hole of a disk is mounted, and a disk supply mechanism for supplying a disk to the rotation drive unit.
The rotary drive unit includes a table part in which a peripheral part of the center hole of the disk is installed, a convex part that enters the center hole of the disk, a non-clamping posture located inside the center hole of the disk, and the table part. A clamp member that operates between a clamp posture that holds the clamp member, and a clamp cam that moves the clamp member between the non-clamp posture and the clamp posture,
A posture switching member that moves the rotation driving unit between a non-holding posture in which the rotation driving unit is disengaged from the center hole of the disc and a holding posture in which the convex portion enters the center hole of the disc, and the rotation driving unit is in the holding posture. A regulating member that contacts the rotational drive unit and regulates the rotation of the rotational drive unit, and operates the clamp cam in a state where the rotation of the rotational drive unit is regulated by the regulating member. A clamp switching mechanism for switching the clamp member from the non-clamping posture to the clamping posture is provided.

  In the disc device of the present invention, when the convex portion enters the center hole of the disc and assumes the holding posture, the rotation drive unit hits the regulating member and the rotation is regulated, and in this state, the clamp member is switched to the clamping posture. Therefore, unlike the prior art, a lock mechanism that locks the rotation drive unit when the clamp member is operated becomes unnecessary, and the number of components constituting the rotation drive unit can be reduced.

  According to the present invention, the clamp switching mechanism includes the clamp cam, the switching rotation unit that rotates coaxially with the table unit, and the rotation of the rotation drive unit being regulated by the regulating member, And a switching drive member that rotates the switching rotating portion.

  In the present invention, it is preferable that the switching rotating part and the switching drive member are connected via a plurality of teeth. With this configuration, the switching rotation unit can be reliably operated by the switching drive member.

  Further, according to the present invention, the clamp member is rotatably supported between the non-clamping posture and the clamping posture via a shaft provided inside the convex portion, and is clamped by a clamp spring. The clamp member is biased toward the posture, and the clamp member is configured to be held in the non-clamp posture by the clamp cam.

  In the present invention, when the convex part of the rotation driving unit hits the regulating member, the concave part provided on one side of the regulating member and the convex part and the convex part provided on the other are fitted. Is preferred.

  The present invention provides the disk drive mechanism, wherein the rotation driving unit, a plurality of supports that can support the disk and are arranged in the thickness direction of the disk, and move any one of the supports to a selected position in the housing. And the disc held on the support moved to the selected position can be held on the rotation drive unit, and the restricting member is placed in the center hole of the disc held on the support not reaching the selected position. It can be configured to be positioned and exhibit a function of preventing the disc from coming off the support.

  In the above configuration, the restricting member can exhibit both the function of restricting the rotation of the rotation drive unit and the function of restricting the disc from being detached from the support, so that the number of components provided in the housing is minimized. can do.

  The present invention is not limited to the disk selection type disk device in which a plurality of disks are held inside the casing, and only a single disk is inserted into the casing from the insertion slot, and the rotation drive unit It may be held. In this case, the restricting member is provided to face the rotation drive unit in the housing. Also in this case, it is possible to reduce the number of components of the rotation drive unit and to make the rotation drive unit thin.

  The disk device provided with the self-clamping mechanism of the present invention can be configured with the minimum number of parts, and the reliability of the operation of clamping the disk to the rotary drive unit can be increased.

1 is an exploded perspective view showing the overall structure of a disk device according to an embodiment of the present invention; A side view when the clamp member provided in the rotation drive unit is set to the non-clamp posture, A side view when the clamp member provided in the rotation drive unit is set to the clamp posture, It is a top view which shows the detail of a rotation drive part and a clamp member, and shows a non-clamp attitude | position. It is a top view which shows the detail of a rotational drive part and a clamp member, and shows a clamp attitude | position. Partial plan view showing details of the clamp mechanism, The perspective view which shows an upper control member, The partial front view which looked at the inside of the disk apparatus at the time of insertion standby mode from the Y1 side, The partial front view which looked at the inside of a disk device when the rotation drive part rose to a holding posture from the Y1 side, The partial front view which looked at the inside of the disc device when the clamp member is in the clamping posture from the Y1 side, A partial front view of the inside of the disk device viewed from the Y1 side when the disk is set in a state in which the disk can be rotationally driven; A plan view showing a disk device when the disk is loaded, Plan view showing the disk device when the disk is loaded

  The disk D loaded in the disk storage type disk device 1 shown in FIG. 1 has a diameter of 12 cm, and is, for example, a CD (compact disk), a CD-ROM, a DVD (digital versatile disk), or the like.

  The disk storage disk device 1 has a box-shaped housing 2. In FIG. 1, the reference direction of the housing 2 is the lower side on the Z1 side, the upper side on the Z2 side, the left side on the X1 side, the right side on the X2 side, the front side on the Y1 side, and the rear side on the Y2 side. The X1-X2 direction is the horizontal direction, and the Y1-Y2 direction is the depth direction.

  The housing 2 is assembled by sequentially stacking a lower housing 3, an intermediate housing 4, and an upper housing 5 from the bottom to the top. The lower housing 3 has a bottom surface 6 of the housing 2, and the intermediate housing 4 has a front surface 7 and a right surface 8 of the housing 2. The upper housing 5 has a left side surface 9, a rear surface 10, and a ceiling surface 11 of the housing 2.

  As shown in FIG. 1, an insertion port 23 is opened on the front surface 7 of the housing 2. The insertion opening 23 has a slit shape, the vertical width dimension is slightly larger than the thickness dimension of the disk D, and the lateral opening width dimension is slightly wider than the diameter of the disk D.

  A first power transmission unit 12 is provided on the upper surface of the bottom surface 6 of the lower housing 3. A mechanism base 15 parallel to the bottom surface 6 is provided on the upper portion of the intermediate casing 4, and a second power transmission unit 16 is provided on the mechanism base 15.

  In the upper housing 5, an area surrounded by the left side surface 9, the rear surface 10, and the ceiling surface 11 is a disk storage area 20, and a plurality of supports 21 each support the disk D in the disk storage area 20. Is provided. Six support bodies 21 are provided in the disk storage area 20, and the support bodies 21 are arranged so as to overlap in the thickness direction.

  The upper casing 5 is provided with support body selection means 22. The support body selection means 22 has three screw shafts. The bearing portions of the respective support bodies 21 are slidably supported by the screw shafts, and the bearing portions are fitted in the spiral grooves of the screw shafts. Match. When the screw shaft is rotated, the six support bodies 21 are moved up and down by the action of the spiral groove, and any one of the support bodies 21 is moved to the selected position, and the selected support body 21 and below the selected support body 21. The space | interval with the adjacent support body 21 is expanded. The support in the selected position is almost the same as the insertion opening 23 in the height position in the Z1-Z2 direction.

  As shown in FIGS. 12 and 13, holding claws 155, 156 and 157 are rotatably supported on the lower surfaces of the respective supports 21. Each of the holding claws 155, 156, and 157 is biased by a spring so that the disk D supplied to the lower surface of the support 21 can be held at three points. A holding release mechanism that faces the support 21 that has moved to the selected position is provided inside the housing 2. When the holding claws 155, 156, and 157 of the support 21 moved to the selected position are operated by the holding release mechanism, the holding claws 155, 156, and 157 are rotated, and the disk D on the lower surface of the support 21 is rotated. Is released.

  As shown in FIG. 1, a lower restriction member 101 made of synthetic resin that extends upward is fixed to the bottom surface 6 of the lower housing 3, and an upper restriction member made of synthetic resin that extends downward below the ceiling surface 11. 102 is fixed. The lower regulating member 101 and the upper regulating member 102 are located on the same axis, and are spaced apart from each other in the vertical direction.

  8 to 11, the disk D held on the support 21 moved to the selected position is indicated by a solid line, and the unselected disk Dx stored in the upper area of the disk storage area 20 is indicated by a chain line. Yes. The disk D supported by the support 21 moved to the selected position is located between the lower regulating member 101 and the upper regulating member 102. The upper regulating member 102 is located inside the center hole of the disc Dx that is not selected, and prevents the disc Dx from coming out of the support 21 that is not selected. Similarly, the lower regulating member 101 is located in the center hole of the disc that is positioned below the selected position and supported by the unselected support 21.

  The support body selection means 22 functions as a first disk supply mechanism that supplies any disk stored in the disk storage area 20 to the selected position so that it can be held by the rotation drive unit 82.

  As shown in FIG. 1, the intermediate housing 4 is provided with a transfer unit 17 below the mechanism base 15. As shown in FIGS. 12 and 13, a roller shaft 111 is rotatably supported by the transfer unit 17, and a pair of transfer rollers 112 and 113 are mounted on the outer periphery of the roller shaft 111. The transfer rollers 112 and 113 are made of synthetic rubber or the like.

  As shown in FIG. 1, support shafts 131 are fixed vertically upward at corners on the bottom surface 6 of the housing 2 on the Y1 side and X1 side, and the end portion on the X1 side of the transfer unit 17 is supported. The shaft 131 is rotatably supported. The transfer unit 17 is rotated from the standby position shown in FIG. 12 toward the transfer operation position shown in FIG. 13 by the power of the motor provided in the second power transmission unit 16. As shown in FIG. 1, a gear 141 is rotatably supported on the support shaft 131 to constitute a third power transmission unit 19. The power of the conveyance motor (not shown) is transmitted by the gear 141 of the third power transmission unit 19 and applied to the roller shaft 111, and the roller shaft 111 is rotationally driven.

  As shown in FIG. 12, the transfer unit 17 is separated from the outer peripheral edge of the disk D stored in the disk storage area 20 at the standby position. When the disk D is inserted from the insertion port 23, the roller shaft 111 is driven by the power of the third power transmission unit 19. The disc D is sandwiched between the transfer rollers 112 and 113 and a synthetic resin sliding member facing the transfer rollers 112 and 113, and is carried into the housing 2 by the rotational force of the transfer rollers 112 and 113. At the same time, the transfer unit 17 is rotated to the transfer operation position shown in FIG. 13, and the disk is supplied to the lower side of the support 21 at the selected position.

  The transfer unit 17 functions as a second disk supply mechanism that supplies the disk inserted from the insertion port 23 to the support 21 and the rotation drive unit 82 at the selected position.

  As shown in FIG. 1, dampers 71, 72, and 73 that are elastic support members are fixed to three locations on the bottom surface 6 of the lower housing 3. The dampers 71, 72, 73 are such that a liquid or gas such as oil is enclosed in a flexible bag body such as rubber.

  A support shaft is fixed vertically downward on the bottom surface of the unit support base 13. Each support shaft is supported by dampers 71, 72, 73. The unit support base 13 is supported by each damper 71, 72, 73. Thus, it can be elastically supported on the bottom surface 6 of the housing 2.

  A posture switching member 54 is supported on the inner side of the rear bent piece 3b provided on the Y2 side of the lower housing 3 so as to be movable in the X1-X2 direction. In addition, a posture switching member 61 shown in FIGS. 8 to 11 is slidably supported in the X1-X2 direction on the inner side of the front bent piece 3a provided on the Y1 side of the lower housing 3.

  As shown in FIG. 1, the first power transmission unit 12 provided on the bottom surface 6 of the lower housing 3 is provided with a rack member 32 that is moved in the Y1-Y2 direction by the power of a motor (not shown). The power of the rack member 32 is transmitted to the switching member 42 via the connecting arm 43. The switching member 42 is supported so as to be movable in the (b)-(c) directions along the arc locus. The moving force of the switching member 42 is applied to the Y2 side posture switching member 54 via the reversing mechanism 44. The moving force of the switching member 42 is also applied to the posture switching member 61. When the switching member 42 moves in the (b) direction, the posture switching member 54 and the posture switching member 61 move in the same direction X2, and when the switching member 42 moves in the (c) direction, the posture switching member 54 and The posture switching member 61 is moved synchronously in the same X1 direction.

  As shown in FIG. 1, the restraint shaft 77 provided in the unit support base 13 is inserted into the control hole 56 provided in the posture switching member 54, and the restraint shaft 78 is shown in FIGS. , 78 are inserted into control holes 62, 62 formed in two positions of the posture switching member 61, respectively.

  As shown in FIG. 1, a control hole 56 formed in the posture switching member 54 has a restraining portion 56 a extending to the X1 side and approaching the bottom surface 6, and a bottom surface 6 continuously from the restraining portion 56 a to the X2 side. A lifting portion 56b formed at a position away from the lifting portion 56b, and a clearance portion 56c that opens continuously with an area sufficiently larger than the restraint shaft 77 are formed on the X2 side of the lifting portion 56b. As shown in FIGS. 8 to 11, the control holes 62 formed in two positions of the posture switching member 61 provided on the Y1 side are similarly formed with a restraining portion 62a, a lifting portion 62b, and a relief portion 62c. ing.

  As shown in FIG. 8, when both the posture switching member 54 and the posture switching member 61 are moved to the X2 side, the restricting shaft 77 is held by the restricting portion 56a of the control hole 56, and the restricting shafts 78 and 78 are controlled. A state in which the unit support base 13 is lowered toward the bottom surface 6 of the casing 2 and the dampers 71, 72, and 73 are crushed toward the bottom surface 6 while being held by the restraining portions 62a and 62a of the holes 62 and 62. Become. At this time, the drive unit 14 mounted on the unit support base 13 is in a non-holding posture away from the disk D held on the support 21 at the selected position.

  9 and 10, when the posture switching member 54 and the posture switching member 61 move to the X1 side, the restraint shaft 77 is lifted by the lifting portion 56b of the control hole 56, and the lifting portion 62b of the control holes 62, 62 , 62b lifts the restraining shafts 88, 88, and the unit support base 13 is raised. At this time, the drive unit 14 mounted on the unit support base 13 is in a holding posture capable of holding the disc held on the support 21 at the selected position.

  As shown in FIG. 11, when the posture switching member 54 and the posture switching member 61 are further moved to the X1 side, the restraint shaft 77 is moved into the escape portion 56c of the control hole 56, and the restraint shafts 78 and 78 are moved to the other control holes. 62, 62 moves into the escape portions 62c, 62c, the restraints on the restraint shafts 77, 78, 78 are released, and the unit support base 13 is elastically supported by the dampers 71, 72, 73.

  As shown in FIG. 1, the drive unit 14 has an elongated drive base 81. A support shaft 84 protrudes vertically upward from the back side of the unit support base 13, the drive base 81 is supported by the support shaft 84, and the drive unit 14 is rotatable along the XY plane. Yes.

  The first power transmission unit 12 provided on the bottom surface 6 of the lower housing 3 is provided with a unit drive member 45 that moves in the Y1-Y2 direction together with the rack member 32, and the unit drive member 45 has a Z2 direction. A drive pin 46 is provided upright.

  When the unit drive member 45 moves in the Y1 direction while the unit support base 13 and the drive unit 14 are lowered by the switching member 42 provided in the first power transmission unit 12 as shown in FIG. The moving force is transmitted from the drive pin 46 to the drive unit 14, and the drive unit 14 is rotated from the retracted position shown in FIG. 1 to the intervention position shown in FIGS. The drive unit 14 in the retracted position is at a position away from the outer peripheral edge of the disk D held in the disk storage area 20, and when the drive unit 14 is rotated to the intervention position, the drive unit 14 is connected to the lower regulating member 101 and the upper part. The rotary drive unit 82 that enters the restriction member 102 and is mounted on the drive unit 14 faces the lower side of the center hole of the disk D held by the support 21 in the disk storage area 20.

  The drive base 81 is provided with a rotation drive portion 82 on the free end side opposite to the base portion that is pivotally supported by the support shaft 84.

  As shown in FIGS. 2 and 3, the rotation drive unit 82 protrudes upward (Z2 direction) at the table portion 82 b on which the lower surface of the peripheral portion of the center hole Da of the disk D is installed, and at the center portion of the table portion 82 b. And a convex portion 82c that enters the center hole Da of the disk D. The table portion 82b and the convex portion 82c are integrally formed of a synthetic resin material. A spindle motor M is fixed to the upper surface of the drive base 81, and a table portion 82 b and a convex portion 82 c are fixed to a rotation shaft 82 a of the spindle motor M. The outer peripheral surface of the convex portion 82c is a cylindrical surface having a low height dimension, and its diameter d is slightly smaller than the inner diameter dimension of the center hole Da of the disk D. A tapered surface 82d that gradually decreases in diameter toward the top is formed at the tip of the convex portion 82c.

  The inside of the convex part 82c is a hollow part, and a notch part 82e communicating with the hollow part is formed around the convex part 82c. The notches 82e are formed at three locations with an angular interval of 120 degrees centered on the rotating shaft 82a.

  The rotation drive unit 82 is equipped with a clamp mechanism 200 for clamping the disk D to the upper surface of the table unit 82b. The clamp mechanism 200 is a so-called self-clamp mechanism.

  4 to 6 show the structure of the clamp mechanism 200 provided inside the convex portion 82c of the rotation driving portion 82 through the convex portion 82c and the table portion 82b. 4 and 5 show a cross section of the rotation shaft 82a of the spindle motor M. FIG. The convex portion 82c is fixed by being press-fitted into the upper end portion of the rotating shaft 82a. In the hollow portion of the convex portion 82c, three support shafts 82f are integrally formed downward from the upper portion of the convex portion 82c. 4 to 6 show cross sections of the three support shafts 82f. The three support shafts 82f are arranged at an angular interval of 120 degrees around the rotation shaft 82a.

  As shown in FIGS. 4 to 6, three clamp members 201 are accommodated in the hollow portion of the convex portion 82c, and the base portion of each clamp member 201 is rotatably supported by the support shaft 82f. Yes. A holding claw 201 a is integrally formed at the tip of the clamp member 201.

  In the hollow portion of the convex portion 82c, three spring support protrusions 82g that are integrally formed downward from the upper portion of the convex portion 82c are provided. 4 to 6 show a cross section of the spring support protrusion 82g. A torsion spring 202 that is a clamp spring is supported on each spring support protrusion 82g, and each clamp member 201 is always urged clockwise by the torsion spring 202.

  As shown in FIGS. 2 and 3, the clamp mechanism 200 is provided with a switching rotation part 203 under the table part 82b. The switching rotation portion 203 is supported so that it can rotate independently of the rotation shaft 82a and the table portion 82b around the rotation shaft 82a. As shown in FIGS. 4 to 6, teeth 203 a are formed on the outer periphery of the switching rotation portion 203 so as to protrude continuously at a constant pitch in the circumferential direction.

  FIG. 6 shows a state where one of the three clamp members 201 is removed. Clamp cams 203b are formed at three locations on the upper surface of the switching rotation portion 203. The clamp cam 203b is a cam groove and has a shape that approaches the rotating shaft 82a as it goes clockwise. The end portion of the clamp cam 203b facing in the clockwise direction is at a position approaching the rotation shaft 82a, and this end portion is the base end holding portion 203b1. Sliding projections (not shown) are formed on the lower surface of each clamp member 201 so as to protrude downward. This sliding protrusion is located between the support end of the clamp member 201 by the support shaft 82f and the holding claw 201a, and this sliding protrusion is slidably inserted into the clamp cam 203b. As shown in FIG. 6, the sliding protrusion moves between the position (a1) and the position (a2) in the clamp cam 203b.

  When the switching rotation portion 203 is rotated in the α direction relative to the rotation shaft 82a, the table portion 82b, and the convex portion 82c, the clamp member 203 is rotated counterclockwise about the support shaft 82f by the clamp cam 203b. As shown in FIGS. 2 and 4, the holding claws 201a retreat inwardly from the tapered surface 82d of the convex portion 82c in the notch portion 82e. This state is a non-clamping posture in which the convex portion 82c can be inserted into the center hole Da of the disk D.

  When the switching rotation portion 203 is rotated in the β direction relative to the rotation shaft 82a, the table portion 82b, and the convex portion 82c, the clamp member 201 is supported by the support shaft 82f by the elastic force of the clamp cam 203b and the torsion spring 202. As shown in FIGS. 3 and 5, the holding claw 201a protrudes outward from the outer peripheral surface of the convex portion 82c. At this time, the clamp member 201 is in the clamping posture, and the peripheral edge portion of the center hole Da of the disk D is sandwiched between the table portion 82b and the holding claw 201a.

  As shown in FIG. 7, the restriction member 102 provided in the disk storage area 20 is made of a synthetic resin material, and is fixed to the lower surface of the ceiling surface 11, and FIGS. 8 to 11. As shown in FIG. 5, the cylindrical portion 102a is located in the center hole of the disk Dx stored in the disk storage area 20. A guide inclined surface 102c facing the insertion port 23 is formed on the lower side surface of the cylindrical portion 102a, and the leading portion of the disk inserted from the insertion port 23 and carried toward the support 21 at the selected position is guided. Even if it hits the inclined surface 102 c, it can be guided between the lower regulating member 101 and the upper regulating member 102. Further, a recess 102 d is formed on the lower end surface of the upper regulating member 102.

  As shown in FIGS. 8 to 11, a clamp transmission member 211 is provided on the drive base 81 of the drive unit 14. The clamp transmission member 211 is made of a sheet metal material and is bent into an L shape in cross section. The clamp transmission member 211 has elongated holes 211a and 211a extending in the longitudinal direction. Guide shafts 212 and 212 are fixed to the side surface 81 a of the drive base 81, and the elongated holes 211 a and 211 a are guided by the guide shafts 212 and 212, and the clamp transmission member 211 is supported so as to be reciprocally movable in the longitudinal direction of the drive base 81. Has been.

  As shown in FIGS. 4 to 6, a switching drive member 213 is provided at the tip of the clamp transmission member 211 that faces the rotation drive unit 82. The switching drive member 213 is made of a flat plate material. The switching drive member 213 is formed with a drive tooth portion 213a in which a plurality of teeth protrude at an equal pitch, and this drive tooth portion 213a can mesh with a tooth portion 203a formed on the outer periphery of the switching rotation portion 203. It is possible.

  The upper regulating member 102 and the switching drive member 213 constitute a clamp switching mechanism that switches the clamp member 201 between the non-clamping posture shown in FIG. 4 and the clamping posture shown in FIG.

  As shown in FIGS. 9 and 10, the unit support base 13 and the drive unit 14 are moved by the lifting portion 56 b of the control hole 56 of the posture switching member 54 and the lifting portions 62 b and 62 b of the control holes 62 and 62 of the posture switching member 61. When the rack member 32 of the first power transmission unit 12 is driven in the Y1 direction by the motor while being lifted, the moving force is applied to the clamp transmission member 211 via the unit drive member 45 and the drive pin 46. It is done. Then, the clamp transmission member 211 and the switching drive member 213 are driven in the Y1 direction or the Y2 direction.

  As shown in FIG. 1, the drive base 81 is provided with an optical head 83. An objective lens 83 a is provided on the upper surface of the optical head 83. The drive base 81 is provided with a sled mechanism, and the sled mechanism moves the optical head 83 from a position approaching the rotation drive unit 82 in a direction away from the rotation drive unit 82. At this time, the objective lens 83a of the optical head 83 can move in the radial direction of the disk D clamped by the rotation drive unit 82.

Next, the operation of supplying the disk D to the rotation drive unit 82 and the clamping operation will be described.
(Disc supply operation)
As the operation of supplying the disk D to the rotation drive unit 82, a first supply operation for carrying the disk D inserted from the insertion port 23 and holding it in the rotation drive unit 82, and being stored in the disk storage area 20 are performed. There is a second supply operation in which any one of the disks is selected and held by the rotation drive unit 82.

  In the first supply operation, the empty support body 21 that does not hold the disk is moved to the selected position and stopped, and the holding claws 155, 156, and 157 are attached to the support body 21 as shown in FIG. It rotates to a position facing the lower surface.

  Further, as shown in FIG. 8, a unit support base is formed by the restraining portion 56a of the control hole 56 provided in the posture switching member 54 and the restraining portions 62a and 62a of the control holes 62 and 62 provided in the posture switching member 61. 13 and the drive unit 14 are pushed down toward the bottom surface 6. Further, as shown in FIG. 12, the drive unit 14 is located in the disk storage area 20, and the rotation drive unit 82 is directly below the upper regulating member 102. Opposite to.

  When the disk D is inserted from the insertion port 23 and this is detected by an optical detection element or the like, the transport motor is started, and the power is transmitted to the roller shaft 111 by the third power transmission unit 19, and the roller shaft 111 is transferred to the disk. Start in the direction of loading. As shown in FIG. 12, the disc D inserted from the insertion port 23 is sandwiched between the transfer rollers 112 and 113 and a clamping member opposite to the transfer rollers 112 and 113, and the inside of the housing 2 is rotated by the rotational force of the transfer rollers 112 and 113. It is carried toward. When it is detected by a detection member (not shown) that the disk D has been carried in a predetermined distance, the motor of the second power transmission unit 16 shown in FIG. 1 is started and the transfer unit 17 is moved from the standby position shown in FIG. It is rotated toward the transfer operation position shown in FIG. The disk D is carried toward the support 21 stopped at the selected position by both the rotational force of the transfer rollers 112 and 113 and the rotational force of the transfer unit 17.

  The loaded disk D is supplied to the lower surface of the support body 21 at the selected position, and is sandwiched between the lower surface of the support body 21 and the three holding claws 155, 156, and 157, and shifts to a disk clamping operation. .

  In the second supply operation, as shown in FIG. 12, the transfer unit 17 is positioned at a standby position where it does not hit the disk D, and the drive unit 14 is moved to a retracted position where it does not hit the disk D as shown in FIG. In this state, the screw shaft of the support body selecting means 22 is rotated, and the six support bodies 21 in the disk storage area 20 are moved up and down by the spiral groove of the screw shaft to hold the disk D to be supplied. The support 21 is selected and moved to the selected position and stopped.

  Thereafter, in a state where the unit support base 13 and the drive unit 14 are lowered, as shown in FIG. 12, the drive unit 14 is rotated toward the disk storage area 20, and the rotation drive unit 82 is connected to the upper regulating member 102. Opposite directly below. In this state, the process shifts to a clamping operation.

(Disc clamp operation)
In the supply operation in which the disk D is supplied to the selected position, the rotational drive unit 82 of the drive unit 14 is in a non-holding posture away from the disk D as shown in FIG. At this time, the clamping member 201 of the clamping mechanism 200 provided in the rotation driving unit 82 is set to the non-clamping posture as shown in FIGS.

  In FIG. 4, the switching rotation unit 203 is rotated counterclockwise (α direction) relative to the rotation shaft 82a, the table unit 82b, and the projection 82c. At this time, the sliding protrusion provided on the lower surface of the clamp member 201 has moved to the holding position (a1) in the proximal end holding portion 203b1 of the clamp cam 203b shown in FIG. Since the proximal end holding portion 203b1 is located close to the rotation shaft 82a, each clamp member 201 rotates counterclockwise against the urging force of the torsion spring 202 with the support shaft 82f as a fulcrum, and is not clamped. The posture is set. As shown in FIG. 6, the base end holding portion 203b1 of the clamp cam 203b is an extremely short portion, but is formed following an arc locus whose center is located at the axis center of the rotating shaft 82a. Therefore, when the sliding protrusion is in the holding position (a1), the clamp member 201 is held in a state of being rotated to the non-clamping posture, and is not rotated clockwise by the urging force of the torsion spring 202. .

  When the clamping operation is started, the posture switching member 54 and the posture switching member 61 are moved in the X1 direction by the power of the first power transmission unit 12 shown in FIG. At this time, the unit support base 13 is lifted by the lifting portion 56 b of the control hole 56 provided in the posture switching member 54 and the lifting portions 62 b and 62 b of the control holes 62 and 62 provided in the posture switching member 61. Then, as shown in FIG. 9, the drive unit 14 is lifted together, the convex portion 82c of the rotational drive portion 82 enters the center hole Da of the disk D at the selected position, and the tip of the convex portion 82c is the upper portion. It is pressed against the lower end of the regulating member 102. The convex portion 82c is firmly regulated so that the tip end portion of the tapered surface 82d is pressed against the concave portion 102d at the lower end of the upper regulating member 102 to be concavo-convexly fitted, and the rotation driving unit 82 is not easily moved.

  A clamp provided on the drive base 81 of the drive unit 14 as shown in FIG. 10 by the power of the first power transmission unit 12 shown in FIG. 1 in a state where the rotation drive unit 82 is restricted from rotating. The transmission member 211 is moved toward the front portion of the drive unit 14. Since the switching drive member 213 provided at the front portion of the clamp transmission member 211 is moved from the position shown in FIG. 4 to the position shown in FIG. 5, the switching rotation is performed by the drive tooth portion 213 a provided in the switching drive member 213. The part 203 is rotated in the β direction.

  When the switching rotation portion 203 is rotated in the β direction relative to the rotation shaft 82a, the table portion 82b, and the projection 82c whose movement is restricted by the upper restriction member 102, the clamp member 201 is provided. The sliding projection comes out of the proximal end holding portion 203b1 of the clamp cam 203b. After that, as shown in FIG. 5, the urging force of the torsion spring 202 causes the clamp member 201 to rotate clockwise, and the sliding protrusion slides in the clamp cam 203b, as shown in FIG. 6 (a2). To each position, and each clamp member 201 assumes a clamping posture.

  As shown in FIG. 10, the clamping member 201 rotated to the clamping posture has a holding claw 201 a extending obliquely upward from the front portion by the elastic biasing force of the torsion spring 202 and press-contacting the inner edge portion of the center hole Da of the disk D. Then, the center portion of the disk D is held by the table portion 82b and the holding claws 201a.

  When the clamping of the disk D is completed, the holding claws 155, 156, and 157 shown in FIGS. 12 and 13 are rotated and detached from the lower surface of the disk D. Thereafter, the posture switching member 54 is moved in the X1 direction by the power of the first power transmission unit 12 illustrated in FIG. 1, and the restraint shaft 77 is moved into the escape portion 56 c of the control hole 56. In synchronism with this, as shown in FIG. 11, the attitude switching member 61 is moved in the X1 direction, and the restraint shafts 78 and 78 are moved to the escape portions 62c and 62c of the control holes 62 and 62, respectively. 13 is elastically supported by dampers 71, 72, 73.

  As shown in FIG. 11, at this time, the disk D is supported by the rotation drive unit 82 at a position slightly away from the lower surface of the support 21 at the selected position. Then, the spindle motor M rotates to rotate the rotation drive unit 82 and the disk D together, and the optical head 83 performs a reading operation and a recording operation on the disk D.

(Clamp release operation)
When the rotation of the disk D is completed, the drive unit 14 is lifted from the state shown in FIG. The rotation drive unit 82 is pressed so as not to rotate easily. Further, the holding claws 155, 156, and 157 shown in FIG. 13 are rotated, and the disk D pressed against the lower surface of the support 21 is held by the holding claws 155, 156, and 157 from the lower side.

  Further, the clamp transmission member 211 is moved from the position shown in FIG. 5 to the position shown in FIG. 4, and the switching rotating portion 203 is rotated in the α direction by the drive tooth portion 213 a of the switching drive member 213 provided on the clamp transmission member 211. Be moved. The sliding protrusions provided on each clamp member 201 reach the position (a1) held by the base end holding portion 203b1 of the clamp cam 203b shown in FIG. 6, and the clamp member 201 is rotated to the non-clamping posture. Is held in that posture.

  Thereafter, the state shown in FIG. 9 to FIG. 8 is reached, the drive unit 14 moves downward to the holding release posture, and the convex portion 82c of the rotation driving portion 82 is the center hole of the disc D held by the support 21. Exit downward from Da.

  In the embodiment, as shown in FIGS. 9 and 10, when the drive unit 14 is raised, the tip of the tapered surface 82 d of the convex portion 82 c of the rotation driving portion 82 is the concave portion at the lower end of the upper regulating member 102. Although it is a structure fitted to 102d, for example, a plurality of convex portions are formed on either the convex portion 82c or the lower end of the upper regulating member 102, and a plurality of concave portions corresponding to the convex portions are formed on the other side. Alternatively, a structure that fits unevenly may be used.

  Further, the present invention is not limited to a disk selection type disk device in which a plurality of disks are stored in the disk storage area 20, but can also be implemented in a thin disk device in which only one disk is loaded.

DESCRIPTION OF SYMBOLS 1 Disc storage type disk apparatus 12 1st power transmission part 13 Unit support base 14 Drive unit 16 2nd power transmission part 17 Transfer unit 19 which functions as a disk supply mechanism 3rd power transmission part 21 Support body 22 Disk supply mechanism Support body selection means 54, 61 Posture switching members 56, 62 Control holes 56a, 62a Restraining portions 56b, 62b Lifting portions 56c, 62c Relief portions 77, 78 Restraining shaft 82 Rotation drive portion 82b Table portion 82c Convex portion 102 Upper portion Regulating member 102d Recess 200 Clamp mechanism 201 Clamp member 203 Switching rotation part 203b Clamp cam 203b1 Base end holding part 211 Clamp transmission member 213 Switching drive part 213a Drive gear

Claims (6)

In a disk apparatus having a rotation drive unit to which a center hole of a disk is mounted, and a disk supply mechanism for supplying a disk to the rotation drive unit,
The rotary drive unit includes a table part in which a peripheral part of the center hole of the disk is installed, a convex part that enters the center hole of the disk, a non-clamping posture located inside the center hole of the disk, and the table part. A clamp member that operates between a clamp posture that holds the clamp member, and a clamp cam that moves the clamp member between the non-clamp posture and the clamp posture,
A posture switching member that moves the rotation driving unit between a non-holding posture in which the rotation driving unit is disengaged from the center hole of the disc and a holding posture in which the convex portion enters the center hole of the disc, and the rotation driving unit is in the holding posture. A regulating member that contacts the rotational drive unit and regulates the rotation of the rotational drive unit, and operates the clamp cam in a state where the rotation of the rotational drive unit is regulated by the regulating member. A disc device comprising a clamp switching mechanism for switching a clamp member from the non-clamping posture to the clamping posture.   The clamp switching mechanism includes the clamp cam, the switching rotating unit rotating coaxially with the table unit, and the switching rotating unit in a state where the rotation of the rotation driving unit is regulated by the regulating member. The disk device according to claim 1, further comprising a switching drive member that rotates.   The disk device according to claim 2, wherein the switching rotation unit and the switching drive member are connected via a plurality of teeth. The clamp member is rotatably supported between the non-clamping posture and the clamping posture via a shaft provided inside the convex portion, and attached to the clamping posture by a clamp spring. And
4. The disk device according to claim 1, wherein the clamp member is held in the unclamped posture by the clamp cam. 5.   5. When the convex part of the rotation drive unit hits the regulating member, the concave part provided in one of the regulating member and the convex part and the convex part provided in the other are fitted. The disk device according to any one of the above. Provided in the housing are the rotation drive unit, a plurality of supports that can support the disk and are arranged in the thickness direction of the disk, and the disk supply mechanism that moves any one of the supports to a selected position. The disk held on the support moved to the selected position can be held on the rotation drive unit,
The said regulating member is located in the center hole of the disc hold | maintained at the said support body which has not reached the selection position, and exhibits the function which prevents that a disk remove | deviates from the said support body. The disk device according to item.

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