JP3943064B2 - Disk unit - Google Patents

Description

  The present invention relates to an optical disk such as a CD and a DVD, a magneto-optical disk, or a disk device that clamps and rotates a magnetic disk, and particularly controls the movement of a head and clamps and clamps the disk by the power of a common motor. The present invention relates to a disk device that is released.

  In an in-vehicle disk device or the like, when a disk is inserted into the housing in the insertion standby mode, the disk is transported by a roller or the like, and the center of the disk is clamped to a rotation drive unit (turn table), and the drive mode is Is set. In this drive mode, the disk is rotationally driven by the rotational drive unit, the head is further moved along the recording surface of the disk, and data recorded on the disk is read by the head, or the disk is read by the head. Data is recorded in

  This type of disk device moves the switching slider with the power of the motor in order to release the disk clamp in the rotation drive unit in the insertion standby mode and to clamp the disk in the rotation drive unit in the drive mode. is required. In the insertion standby mode, it is necessary to operate the transport roller with a motor to carry the disc into the housing, and to carry out the disc whose clamp has been released to the outside of the housing. In the drive mode, it is necessary to drive the sled mechanism with the power of the motor to move the head along the recording surface of the disk.

  As described above, in the disk device, it is necessary to drive each mechanism with a motor. However, if a plurality of motors are mounted for this purpose, the product unit price increases and the weight of the device also increases. Therefore, as described in Patent Document 1 below, a mechanism in which each mechanism is driven by a single motor has been proposed.

  The following patent document 1 is provided with a drive gear driven by a motor, a switching control idler gear and a roller drive idler gear meshing with the drive gear, both idler gears supported by an idler plate, By rotating the plate, the idler gears can move in a planetary state while being engaged with the drive gear.

  In the drive mode, the idler plate is locked by the idler lock plate, the switching control idler gear meshes with the pickup feed gear, the roller drive idler gear disengages from the transport roller drive gear, and the pickup is moved along the disk by the power of the motor. Moved.

  When the pickup moves to the inner peripheral side, the idler lock plate is pushed by the pickup, and the idler plate is unlocked by the idler lock plate. At this time, both idler gears move planetarily around the drive gear, the switching control idler gear moves away from the pickup feed gear, the switching control idler gear meshes with the switching control gear, and the shift plate is driven. The disc clamp is released by the moving force of the shift plate.

Further, the roller drive idler gear meshes with the transport roller drive gear, the transport roller is driven, and the disc released from the clamp is carried out.
Japanese Patent Application Laid-Open No. 11-195262

The thing described in Patent Document 1 has the following problems.
(1) A lock hole is formed in the shift plate, and the rotation position of the idler plate is controlled by the lock plate and the lock hole. That is, by restricting the idler plate by the lock hole, the meshing between the switching control idler gear and the switching control gear and the meshing between the roller driving idler gear and the transport roller driving gear are maintained. When the shift plate is moved to release the restriction of the idler plate, the idler plate is rotated so that the switching control gear and the pickup feed gear are engaged with each other, and the idler plate is locked by the lock plate in this state.

  As described above, since the shift position of the idler gear is controlled by both the lock hole and the lock plate of the shift plate, the number of parts increases, and the operation timing of either the shift plate or the lock plate is delayed. If the shift occurs, there is a risk that mode switching cannot be performed reliably.

(2) When the switching control idler gear meshes with the switching control gear, the roller driving idler gear continues to mesh with the transport roller driving gear. Therefore, after the center hole of the disk coincides with the rotation drive unit, the transport roller continues to rotate until the shift plate moves and the clamping of the disk is completed. Therefore, there is a possibility that the disk is damaged by the rotating conveying roller before the disk clamping is completed.

(3) Both the idler gear for switching control and the idler gear for driving the roller are supported on the idler plate, a load is applied between the idler plate and each idler gear, and both idler gears are connected to the planet according to the rotation direction of the drive gear. It is moved. Therefore, the load for rotating the drive gear is large, and the load continues to act on the motor and the power consumption increases.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a disk device that has a small number of components, can accurately set the switching timing of power transmission, and can reduce a load.

In the present invention, the head (31) facing the recording surface of the disk (D), guide means (32, 33) for guiding the head (31) along the recording surface, and the head (31) move together. And a biasing member (38) between the head (31) and the rack member (36) for biasing the rack member (36) in the outer circumferential direction (So) of the disk, A pinion gear (41) that can mesh with the rack teeth (37) of the rack member (36), a motor (M) that drives the pinion gear (41), and a disk (D) in the rotational drive section (22) A switching slider (15) that moves between a first position for releasing the clamp and a second position for clamping the disk (D) to the rotary drive unit (22), and a side of the switching slider (15) Shape on side REGULATORY section and (15b),
Power transmission from the sun gear (46) driven by the motor (M), the planetary gear (63) meshing with the sun gear (46), and the sun gear (46) to the switching slider (15) A switching member (65) that moves between a transmission position that sets the planetary gear (63) to a position that forms a path and a blocking position that disconnects the planetary gear (63) from the power transmission path ;
A transmission member (68) for transmitting the moving force to the switching member (65) when the rack member (36) moves in the inner circumferential direction (Si) of the disk;
In the state where the switching slider (15) is set to the second position, the moving force when the rack member (36) moves in the inner circumferential direction (Si) of the disk (D) is the transmission member ( 68) is transmitted to the switching member (65) via 68), the switching member (65) starts to move from the blocking position to the transmission position,
Thereafter, the switching member (65) moves toward the transmission position by the rotational force of the motor (M), and the movement force is applied to the rack member (36) via the transmission member (68). The rack member (36) is pulled in the inner circumferential direction (Si) of the disk against the urging force of the urging member (38), and the rack teeth (37) and the pinion gear (41) are engaged with each other. Is cut off, the power transmission path is formed, and the switching slider (15) is moved to the first position,
When the switching slider (15) is in said first position, and the switching slider by the rotational force of said motor (M) - (15) were it to move toward the second position from the first position when it is, the restricting portion (15b) slides with the switching member (65) or the slide restraint member and (74) for constraining the switching member (65), said switching member (65) is the Restricted to the transmission position, the power transmission path continues to be formed,
When the switching slider (15) moves to the second position, the restriction by the restriction portion (15b) is released, and the switching member (65) is moved by the rotational force of the motor (M). While moving from the transmission position to the blocking position, the moving force is transmitted to the rack member (36) via the transmission member (68), and the rack member (36) meshes with the pinion gear (41). It is characterized by moving to .

The present invention, the cams unit for switching slider (15) (92) is provided, switching arm (88) is connected slidably to the cam portion (92), the switching arm (88) A switching gear (87) is provided on the opposite side of the cam part (92) side,
Wherein when switching slider (15) is in the first position, the power of the previous SL motor (M), the roller power transmission path for transmitting the conveying roller for conveying (28) the disk (D) is formed,
When the switching slider (15) moves from the first position to the second position, the switching arm (88) slides on the cam portion (92) and the switching gear (87) moves. The roller power transmission path is interrupted by the movement of the switching gear (87) .

The present invention, wherein when switching member (65) is restricted to the transfer position, are blocked thread power transmission path from the previous SL motor (M) Previous Kihe head (31), The thread power transmission path is formed by the switching member (65) moving from the transmission position to the blocking position .

Further, according to the present invention, a meshing member (51) that can move relative to the switching slider (15) by a predetermined distance is provided, and the meshing member (51) and the switching slider (15) have rack teeth. (52, 53) is formed, and when the switching member 65 is in the transmission position, a pinion gear (driven by the motor (M) through the sun gear (46) and the planetary gear (63)) 57) is provided,
When the switching slider (15) is in the first position and the disk (D) is moved to a predetermined position, the engagement member (51) is moved to the second position by the moving force of the disk (D). A trigger member (97) for moving the rack teeth (52, 53) to the pinion gear (57) by moving to a position is provided.

  In the first aspect of the present invention, the position of the switching member, that is, the position of the planetary gear is controlled by sliding the switching member or the restraining member on the restricting portion formed on the switching slider. Thus, the insertion standby mode and the drive mode can be set reliably.

  According to the second aspect of the present invention, since the cam portion provided on the switching slider controls the power supply to the conveying roller, the time when the center of the disk coincides with the rotation drive section, that is, immediately after that, that is, the disk clamp Before the process is completed, the transmission of power to the conveying roller can be cut off, and the disk can be prevented from being damaged by the conveying roller.

  In the invention according to the third aspect, since the sled power transmission path can be connected and disconnected by the switching member, it is not necessary to mesh the planetary gear with the gear of the sled mechanism, and the sled mechanism can be reliably controlled intermittently. Therefore, the load when the head moves along the disk can be reduced. Moreover, it becomes possible to comprise only one planetary gear.

  According to the fourth aspect of the present invention, the moving timing of the switching slider can be set with high accuracy in accordance with the insertion detection of the disc.

  1 to 12 show a disk device according to a first embodiment of the present invention. 1 is an exploded perspective view of the drive unit, FIGS. 2 to 5 show a state in which the drive unit is housed in the outer case 1A, FIG. 2 and FIG. 4 are side views, and FIG. 3 and FIG. FIG. 6 to 9 show the mode switching device provided in the drive unit according to the operation, and are bottom views of the lower chassis 11 shown in FIG. 10 to 12 are partially enlarged views of the bottom view.

  As shown in FIG. 2, the disk device 1 is for in-vehicle use, and an outer case 1A is formed by assembling an upper housing 2 and a lower housing 3 into a box shape. The outer case 1A has a front end surface on the Y2 side, and an insertion port 9 through which the disk D is inserted and discharged is opened on the front end surface.

  The drive unit 10 is accommodated in the outer case 1A. As shown in FIG. 1, the drive unit 10 is a combination of a lower chassis 11 and an upper chassis 12.

  As shown in FIGS. 1 and 3, the lower chassis 11 is provided with a turntable 22. A spindle motor 26 is fixed to the lower surface of the lower chassis 11, and a drive shaft 26a projects above the lower chassis 11, and the turntable 22 is fixed to the drive shaft 26a.

  As shown in FIGS. 1 and 3, the upper chassis 12 is provided with a clamper 23. The clamper 23 is rotatably supported at the tip of the clamp arm 24. The clamp arm 24 is supported by the upper chassis 12 so that the base end portion on the Y1 side is rotatable, and the clamp arm 23 is always urged clockwise by the urging spring 25, that is, in the direction in which the clamper 23 is lowered. Has been.

  Support pins 4 and 4 are fixed to the left and right sides of the Y1 side of the lower chassis 11, and the support pins 4 and 4 are elastically attached to a damper 5 fixed to the upper housing 2 as shown in FIG. It is supported. A support pin 6 is also fixed to the Y2 side of the upper chassis 12, and this support pin 6 is elastically supported by a damper 7 fixed to the upper housing 2 as shown in FIG.

  The dampers 5 and 7 are fluids such as oil sealed in flexible bags such as rubber. When driving a disk, the drive unit 10 is elastically supported by the dampers 5 and 7 so that even if external vibration such as vehicle body vibration is applied, the vibration is not directly transmitted to the disk being driven and reproduced. It is possible to prevent the occurrence of sound skipping.

  As shown in FIG. 1, connecting shafts 13 and 13 are fixed to both sides of the lower chassis 11 on the Y2 side, and the connecting shafts 13 and 13 are connected to both sides of the upper chassis 12. The holes 14 and 14 are rotatably inserted. As a result, as shown in FIGS. 2 to 5, the lower chassis 11 can rotate with respect to the upper chassis 12 using the connecting shafts 13 and 13 as fulcrums. Since the connecting shafts 13 and 13 are provided in front of the lower chassis 11 (Y2), the lower chassis 11 can rotate so that the rear end moves up and down with the front end as a fulcrum. .

  As shown in FIG. 1, a switching slider 15 is supported on the side of the lower chassis 11 on the X2 side so as to be linearly slidable in the Y1-Y2 direction. It is fixed. Inclined holes 17 are formed on both sides of the upper chassis 12 so as to incline downward toward the rear (Y1 direction), and the switching shaft 16 is slidably inserted into the inclined holes 17. ing.

  As shown in FIG. 1, lock members 18 and 18 are provided on the left and right sides of the upper chassis 12. Support holes 18a and 18a are formed in the lock members 18 and 18, and the support holes 18a and 18a are inserted into support shafts 19 and 19 provided on the left and right side surfaces of the upper chassis 12, so that the upper chassis On the side surfaces of the twelve, the lock members 18 are rotatably supported.

  As shown in FIGS. 1 and 2, the locking members 18, 18 are formed with elongated holes 18b, 18b. Lock shafts 21 and 21 are fixed slightly behind the support shafts 13 and 13 on the left and right sides of the lower chassis 11, and the lock shafts 21 and 21 are inserted into the long holes 18b and 18b. Yes.

  2 and 3 show a disk insertion standby mode. In this mode, the switching slider 15 provided in the lower chassis 11 has moved to the end in the Y1 direction. At this time, the switching shaft 16 provided on the switching slider 15 moves to the rear end in the inclined hole 17 formed in the side plate of the upper chassis 12, and the lower chassis 11 is connected to the connecting shafts 13, 13. With the fulcrum as a fulcrum, the rear portion is inclined downward from the upper chassis 12.

  Since the lower chassis 11 is inclined so that the rear portion is lowered, the lock member 18 is rotated counterclockwise by a lock shaft 21 provided on the lower chassis 11. As a result, the front end 18c of the lock member 18 is pressed against the lower surface of the upper housing 2, the rear end 18d of the lock member 18 is pressed against the upper surface of the lower housing 3, and the drive unit 10 It will be in the state locked with respect to the housing | casing 3. FIG.

  In this insertion standby mode, as shown in FIG. 3, the turntable 22 provided in the lower chassis 11 descends away from the clamper 23, and a sufficient gap is formed between the turntable 22 and the clamper 23. The

  When insertion of the disk D is detected, a switching slider 15 provided in the lower chassis 11 is moved in the Y2 direction by a mode switching device 30 described later. At this time, as shown in FIG. 4, the switching shaft 16 provided in the switching slider 15 moves to the front end in the inclined hole 17 formed in the upper chassis 12. Therefore, as shown in FIG. 5, the lower chassis 11 rotates clockwise with the connecting shaft 13 as a fulcrum, and the disc is formed by the turntable 22 provided in the lower chassis 11 and the clamper 23 provided in the upper chassis 12. The periphery of the center hole Da of D is clamped.

  Further, as shown in FIG. 4, since the lock shaft 21 provided in the lower chassis 11 is raised, the lock member 18 is rotated clockwise around the support shaft 19, and the front end 18 c of the lock member 18 is moved. Is separated from the upper casing 2, and the rear end 18 d of the locking member 18 is separated from the lower casing 3. Therefore, the drive unit 10 is unlocked and is elastically supported by the dampers 5 and 7 in the outer case 1A.

  As shown in FIG. 2, a roller arm 27 is provided in front of the upper chassis 12. The front end of the roller arm 27 is rotatably supported on the upper chassis 12 by a support shaft 27a. A roller shaft 28 a of the transport roller 28 is rotatably supported at the rear end portion of the roller arm 27. A control hole 18e is formed at the front end of the lock member 18, and the roller shaft 28a is inserted into and supported by the control hole 18e.

  In the insertion standby mode shown in FIGS. 2 and 3, since the lock member 18 is rotated counterclockwise, the roller shaft 28a is lifted by the control hole 18e. In this state, when the disk D is inserted in the Y1 direction from the insertion port 9 of the outer case 1A, the disk D is sandwiched between the transport roller 28 and a sliding member (not shown) opposed thereto. In the disk drive mode shown in FIGS. 4 and 5, since the lock member 18 is rotated clockwise, the roller shaft 28a is lowered by the control hole 18e formed in the lock member 18, and the transport roller 28 is moved. , Separated from the disk D clamped on the turntable 22.

  6 to 9 are bottom views of the lower unit 11 of the drive unit 10 as viewed from the lower side. The lower unit 11 is reversed from side to side from the state shown in FIG. It corresponds to. 6 to 9, the right side in the figure is the X2 direction, the left side in the figure is the X1 direction, and the Y2 direction in which the insertion port 9 is located is directed downward in the figure.

  6 to 9, the connecting shaft 13 and the lock shaft 21 protrude from the right side surface of the lower chassis 11. The switching slider 15 is supported on the X2 side of the lower surface of the lower chassis 11 so that it can slide linearly in the Y1-Y2 direction. The switching shaft 16 is fixed to the switching slider 15. The switching shaft 16 moves in the Y1-Y2 direction together with the switching slider 15. A support portion 15a is provided at the end of the switching slider 15 on the Y1 side, and a support portion 11a is also provided on the lower surface of the lower chassis 11. A reversing spring 29 is provided between the support portions 15a and 11a. It is hung.

  In the insertion standby mode of FIG. 6, the switching slider 15 is moved in the Y1 direction, the urging force of the reversing spring 29 acts on the switching slider 15 in the Y1 direction, and the switching slider 15 is moved in the Y1 direction. The position is stable. In the disk drive mode shown in FIG. 9, the switching slider 15 moves in the Y2 direction. At this time, the urging direction is switched to the Y2 direction by the reversing spring 29, and the switching slider 15 is stabilized at the second position moved in the Y2 direction.

  A mode switching device 30 that controls the movement of the switching slider 15 is provided on the lower surface of the lower chassis 11. The mode switching device 30 switches the power from the motor M to a sled power transmission path for moving the pickup, a switching power transmission mechanism for moving the switching slider 15, and a power transmission path to the conveying roller 28. Is.

  Various gears are provided in FIGS. 6 to 9 show the details of the tooth shape of the various gears that need to be explained about the meshing, but the details of the gears that do not need to be explained are only drawn by pitch circles. The illustration of a simple structure is omitted.

  As shown in FIG. 1, a window 11 b is opened in the lower chassis 11. An optical pickup (optical head) 31 is provided on the lower surface of the lower chassis 11, and the optical pickup 31 is exposed from the window 11 b toward the upper surface of the lower chassis 11. An objective lens 31 a is provided on the upper surface of the optical pickup 31. The optical pickup 31 includes a light emitting element for applying laser light to the objective lens 31a, a light receiving element for receiving reflected return light from the disk D, and other optical elements.

  On the lower surface of the lower chassis 11, a guide shaft 32 and a guide portion 33 that are inclined and extend in both the X direction and the Y direction are arranged in parallel to each other. As shown in FIG. 6, bearings 34 a and 34 b are formed on one side of the optical pickup 31 with a gap in the moving direction, and the bearings 34 a and 34 b slide on the guide shaft 32. It is extrapolated freely. A bifurcated sliding portion 35 is formed on the other side of the optical pickup 31, and the sliding portion 35 is slidably fitted so as to sandwich the guide portion 33. Therefore, the optical pickup 31 is guided by the guide shaft 32 and the guide portion 33 and is movable in the inner circumferential direction Si and the outer circumferential direction So of the disk D.

  The optical pickup 31 is provided with a rack member 36 that can move together. The rack member 36 has rack teeth 37 formed in a predetermined range in the longitudinal direction. Bearing portions 36 a and 36 b are formed in the rack member 36 at intervals in the moving direction of the optical pickup 31. One bearing portion 36 a is located between the bearing portion 34 a and the bearing portion 34 b of the optical pickup 31 and is slidably inserted on the guide shaft 32.

  A compression spring 38 is provided between the bearing portion 34 b of the optical pickup 31 and the bearing portion 36 a of the rack member 36, and the compression spring 38 is externally inserted into the guide shaft 32.

  The compression spring 38 is interposed between the bearing portion 36a and the bearing portion 34b in a state compressed from a free length, and the bearing portion 36a and the entire rack member 36 are moved in the outer circumferential direction So by the repulsive force. It is energized. In FIG. 6, since the rack member 36 is pulled in the inner circumferential direction Si with respect to the optical pickup 31, the bearing portion 36 a is separated from the bearing portion 34 a, but the force that separates the optical pickup 31 and the rack member 36 from each other. 9, the bearing portion 36a is brought into close contact with the bearing portion 34a by the elastic force of the compression spring 38, so that the optical pickup 31 and the rack member 36 are integrated with each other as shown in FIG. It can move in the Si direction.

  On the side of the rack member 36, a shaft 43 is fixed to the lower surface of the lower chassis 11, and the pinion gear 41 and the transmission gear 42 are supported on the shaft 43 so as to rotate together. 6 to 8, the rack teeth 37 are separated from the pinion gear 41. However, when the rack member 36 moves in the outer circumferential direction So, the rack teeth 37 and the pinion gear 41 may mesh with each other as shown in FIG. It can be done.

  At the side of the transmission gear 42, a shaft 44 is fixed to the lower surface of the lower chassis 11, and a drive gear 45 and a sun gear 46 are supported on the shaft 44 so as to rotate together. The sun gear 46 meshes with the transmission gear 42, and the drive gear 45 meshes with a worm gear 47 provided on the output shaft of the motor M fixed to the lower chassis 11.

  In this embodiment, a path from the worm gear 47 to the drive gear 45, the sun gear 46, the transmission gear 42, the pinion gear 41, and the rack teeth 37 is a thread power transmission path.

  As shown in FIG. 6, a meshing member 51 is superimposed on the switching slider 15. The meshing member 51 is combined with the switching slider 15 so that it can move slightly in the Y direction. Rack teeth 52 extending in the Y direction are formed on the side surface of the meshing member 51 facing the X1 side. On the other hand, as shown in FIG. 9 for a while, rack teeth 53 extending in the Y direction are also formed on the switching slider 15. The rack teeth 52 and the rack teeth 53 are formed of the same module. In the state shown in FIG. 6, the rack teeth 53 formed on the switching slider 15 and the rack teeth 52 formed on the meshing member 51 overlap. .

  A rectangular notch 51a extending in the Y direction is formed in the meshing member 51, and a compression spring 54 is accommodated in the notch 51a. The compression spring 54 is installed in a compressed state, and the engagement member 51 is always urged in the Y1 direction on the switching slider 15 by the compression spring 54. In the state shown in FIG. 6, no external force is applied to the meshing member 51, and the meshing member 51 is combined on the switching slider 15 while moving in the Y1 direction. When the meshing member 51 is moved in the Y2 direction from the state of FIG. 6, the meshing member 51 can move by a slight distance in the Y2 direction on the switching slider 15 against the elastic force of the compression spring 54. It is like that.

  A shaft 56 is fixed to the lower surface of the lower chassis 11 on the X2 side, and a pinion gear 57 and a transmission gear 58 are supported on the shaft 56 so as to rotate together. In FIG. 6, the pinion gear 57 and the rack teeth 52 and 53 are separated from each other. However, when the switching slider 15 and the meshing member 51 are moved in the Y2 direction as shown in FIGS. However, it can mesh with both the rack teeth 52 provided on the meshing member 51 and the rack teeth 53 (see FIG. 9) provided on the switching slider 15.

  On the side of the transmission gear 58, a shaft 59 is fixed to the lower chassis 11, and the intermediate gear 61 and the intermediate gear 62 are supported on the shaft 59 so as to be rotated together. One intermediate gear 62 is always meshed with the transmission gear 58.

  A planetary gear 63 meshes with the sun gear 46. 6 to 8, the planetary gear 63 meshes with the intermediate gear 61. In this state, a switching power transmission path from the worm gear 47 to the drive gear 45, the sun gear 46, the planetary gear 63, the intermediate gear 61, the intermediate gear 62, the transmission gear 58, the pinion gear 57, and the rack teeth 52 and 53. Is formed.

  In the mode switching device 30, a fan-shaped switching member 65 is rotatably supported on the shaft 44, a shaft 64 is fixed to the switching member 65, and the planetary gear 63 is rotatable on the shaft 64. It is supported. The switching member 65 has a circumferential portion 65a along an arc locus having a predetermined radius centered on the shaft 64, and a locking portion 65b extending in the radial direction from the end of the circumferential portion 65a. .

  As shown in FIGS. 6 and 10 to 12, a shaft 67 is fixed between the movement path of the rack member 36 and the switching member 65, and the transmission member 68 is rotatably supported on the shaft 67. Has been. A transmission recess 68 a is formed at one end of the transmission member 68. The rack member 36 is integrally formed with a transmission convex portion 36c, and the transmission convex portion 36c can be fitted into the transmission concave portion 68a as the rack member 36 moves in the inner circumferential direction Si. Yes.

  As shown in FIGS. 10 to 12, the switching member 65 is formed with a cam portion 71. The cam portion 71 is a cam groove or a cam hole, and a transmission shaft 69 fixed to the other end of the transmission member 68 is slidably inserted into the cam portion 71. As shown in FIG. 12, the cam portion 71 has a switching portion 71a and a holding portion 71b formed continuously. The switching portion 71a extends in the radial direction about the shaft 44. The holding portion 71b has an arc shape. FIG. 12 shows a state in which the transmission member 68 is rotated clockwise and the switching member 65 is rotated counterclockwise. In the state shown in FIG. 12, the center line of the holding portion 71b is It is formed along an arc locus having a constant radius R with respect to the center of the shaft 67.

  As shown in FIG. 6, a relay member 72 fixed to the lower chassis 11 is provided outside the circumferential portion 65 a of the switching member 65. In the relay member 72, two teeth that mesh with the teeth of the planetary gear 63 are formed toward the moving path of the planetary gear 63. As shown in FIG. 8 to FIG. 9 and FIG. 10 to FIG. 12, the teeth of the planetary gear 63 can mesh with the teeth of the relay member 72 while the planetary gear 63 moves.

  A shaft 73 is fixed to the lower chassis 11 between the switching member 65 and the switching slider 15, and a restraining member 74 is rotatably supported on the shaft 73. A hook 74a is integrally formed at the left end of the restraining member 74, and a contact portion 74b is formed at the right end. The restraining member 74 is always urged clockwise by the urging member 75.

  On the side of the switching slider 15 on the X1 side, a restricting portion 15b linearly extending in the Y direction as the moving direction is formed, and at the end of the restricting portion 15b on the Y1 side, the restricting portion is formed. A restriction releasing portion 15c that is recessed from 15b in the X2 direction is formed. In the insertion standby mode shown in FIG. 6, the contact portion 74b of the restraining member 74 abuts on the restricting portion 15b, and the clockwise rotation of the restraining member 74 is restricted. At this time, the hook 74a of the restraining member 74 is engaged with the locking portion 65b of the switching member 65, and the turning of the switching member 65 in the counterclockwise direction is restrained.

  As shown in FIGS. 8 and 9, when the switching slider 15 moves in the Y2 direction and the restricting portion 15b is disengaged from the contact portion 74b, the restraining member 74 is rotated clockwise by the urging force of the urging member 75. Rotate. Then, the hook 74a is disengaged from the locking portion 65b, and the restraint of the switching member 65 is released.

  As shown in FIG. 1 and FIG. 6, a transmission gear 81 is rotatably provided at the tip of the side plate on the X2 side of the lower chassis 11 on the Y2 side. A roller gear 28c is provided at the end of the conveying roller 28. In the insertion standby mode in which the conveying roller 28 is lifted as shown in FIG. 2, the roller gear 28c and the transmission gear 81 are engaged with each other, With the rotational force of the transmission gear 81, the transport roller 28 can be driven to rotate in both forward and reverse directions.

  As shown in FIG. 6, in the lower chassis 11, the transmission gear 81 and a bevel gear 82 integrated therewith are rotatably supported. The lower chassis 11 is provided with a bevel gear 84 rotatably supported by a shaft 83, and the bevel gear 82 and the bevel gear 84 are always meshed with each other. A shaft 85 is fixed to the lower chassis 11, and a relay gear 86 is rotatably supported on the shaft 85. A spur gear is integrally formed with the bevel gear 84, and the spur gear and the relay gear 86 are always meshed with each other.

  A switching gear 87 is provided between the transmission gear 58 and the relay gear 86. In the insertion standby mode shown in FIG. 6, the switching gear 87 is engaged with both the transmission gear 58 and the relay gear 86. At this time, a roller driving force transmission path is formed from the transmission gear 58 through the switching gear 87, the relay gear 86, the bevel gear 84, the bevel gear 82, the transmission gear 81, and the roller gear 28c.

  A switching arm 88 is rotatably supported on the shaft 56 that supports the transmission gear 58. The switching gear 87 is rotatably supported on a shaft 89 fixed to one end of the switching arm 88, and the switching gear 87 can move around the transmission gear 58 in a planetary motion. The other end of the switching arm 88 extends to a position where it overlaps the switching slider 15, and a switching pin 91 is fixed to the other end.

  As shown in FIG. 6, a switching cam portion 92 is formed on the switching slider 15. The switching cam portion 92 is a cam groove or a cam hole, and the switching pin 91 is slidably inserted into the switching cam portion 92.

  The switching cam portion 92 is formed with an engaging portion 92a extending obliquely at an end portion on the Y2 side, and a separating portion 92b extending linearly along the moving direction of the switching slider 15 is formed on the Y1 side thereof. Has been.

  In the insertion standby mode shown in FIG. 6, since the switching slider 15 is moved in the Y1 direction, the switching arm 88 is rotated counterclockwise by the meshing portion 92a, and the switching gear 87 is connected to the transmission gear 58. The relay gear 86 is engaged with both sides. As shown in FIGS. 8 and 9, when the switching slider 15 moves in the Y2 direction, the switching arm 88 is rotated clockwise by the separating portion 92b, and the switching gear 87 is separated from the relay gear 86. The roller driving force transmission path transmitted from the transmission gear 58 to the roller gear 28c is interrupted.

  As shown in FIG. 1, the upper chassis 12 is provided with a detection member 94. In FIG. 6, the detection member 94 is indicated by a broken line, but the detection member 94 is rotatably supported by a shaft 95 fixed to the lower surface of the upper chassis 12. A detection pin 96 is fixed to one end of the detection member 94. This detection pin 96 is located in the carry-in path of the disk D inserted from the insertion port 9, and the center hole Da of the disk D conveyed by the conveyance roller 28 coincides with the turntable 22 as shown in FIG. When this position is reached, the detection pin 96 is pushed at the edge of the disk D on the Y1 side.

  A trigger pin 97 is fixed to the other end of the detection member 94. As shown in FIG. 6, the trigger pin 97 passes through the circular arc hole 11 c formed in the lower chassis 11 and extends to the lower surface of the lower chassis 11, and the trigger pin 97 is connected to the engagement member 51. It faces the position where the end face on the Y1 side can be pressed.

Next, the operation of the disk device 1 according to the first embodiment will be described.
(Insertion standby mode)
As shown in FIG. 6, the insertion standby mode is when the switching slider 15 is at the first position moved to the end in the Y1 direction.

  In FIG. 6, the switching slider 15 is urged in the Y1 direction by the reversing spring 29 and is stable at that position, and the rack teeth 53 formed on the switching slider 15 and the rack teeth 52 formed on the meshing member 51. Are both away from the pinion gear 57.

  The restraint member 74 is pivoted counterclockwise with the abutment portion 74b abutting against the regulation portion 15b formed on the switching slider 15, and the restraint member 74 is restrained from rotating clockwise at that position. Has been. Further, the hook 74a of the restraining member 74 is latched by the latching portion 65b of the switching member 65, so that the switching member 65 is restrained from rotating counterclockwise.

  In the insertion standby mode shown in FIG. 6, the switching member 65 is held by the hook 74a at the transmission position rotated clockwise as described above, and the planetary gear 63 is held in mesh with the intermediate gear 61. ing. Since the transmission member 68 is rotated counterclockwise by the clockwise rotation of the switching member 65, the rack member 36 is pulled in the Si direction by the rotational force of the transmission member 68, and the compression spring. 38 contracts, and the bearing portion 36 a of the rack member 36 is separated from the bearing portion 34 a of the optical pickup 31. Therefore, the rack teeth 37 of the rack member 36 are separated from the teeth of the pinion gear 41.

  In the insertion standby mode shown in FIG. 6, the switching pin 91 of the switching arm 88 provided so as to be rotatable about the shaft 56 enters the engaging portion 92 a of the switching cam portion 92 provided on the switching slider 15. The switching arm 88 is rotated counterclockwise. Therefore, the switching gear 87 supported by the switching arm 88 meshes with both the transmission gear 58 and the relay gear 86.

  Thus, in the insertion standby mode, the pinion gear 41 and the rack teeth 37 are not meshed, and the pinion gear 57 and the rack teeth 52 and 53 are not meshed. Therefore, the power transmission path of the motor M includes the worm gear 47, the drive gear 45, the sun gear 46, the planetary gear 63, the intermediate gears 61 and 62, the transmission gear 58, the switching gear 87, the relay gear 86, and the bevel gear 84. Only the roller drive transmission path that is transmitted to the bevel gear 82 and the transmission gear 81 is formed.

  In the insertion standby mode, since the switching slider 15 and the switching shaft 16 are moved in the Y1 direction, as shown in FIGS. 2 and 3, the lower chassis 11 is rotated so that the rear portion is lowered with the connecting shaft 13 as a fulcrum. As a result, the turntable 22 is separated from the clamper 23. Further, as shown in FIG. 2, the lock member 18 is rotated counterclockwise by a lock shaft 21 provided in the lower chassis 11, and the front end 18c of the lock member 18 hits the upper housing 2 and the rear end 18d. Is a state where the drive unit 10 is locked in the outer case 1A.

  Further, the conveyance roller 28 is lifted by the control hole 18e of the lock member 18, and the conveyance roller 28 is set at a position where power can be transmitted to the disk D. At the end of the conveyance roller 28 as shown in FIG. The provided roller gear 28 c meshes with the transmission gear 81.

  Therefore, when the motor M is driven in the insertion standby mode, the rack member 36 and the switching slider 15 do not move, and the relationship between the drive unit 10 and the outer case 1A is maintained in the state shown in FIGS. Only the transport roller 28 is driven to rotate. In this state, when the motor M is driven in one direction, the transport roller 28 is driven in the direction of introducing the disk, and the disk D inserted from the insertion port 9 is transported in the Y1 direction. When the motor M is driven in the other direction, the transport roller 28 is driven in the direction of ejecting the disk, and the disk D whose clamp on the turntable 22 is released is ejected toward the insertion port 9 by the rotational force of the transport roller 28. Is done.

(Switching from insertion standby mode to disk drive mode)
In the insertion standby mode shown in FIGS. 2, 3, and 6, when a disk is inserted from the insertion slot and this is detected by an insertion detection means (not shown), the motor M is driven. At this time, the rotation direction of the sun gear 46 is counterclockwise, the rotation direction of the planetary gear 63 is clockwise, and the rotation direction of the pinion gear 57 is also clockwise. Further, the rotation direction of the transport roller 28 is a direction in which the disk D is carried in the Y1 direction, and is the counterclockwise direction in FIG.

  As shown in FIG. 6, when the disk D is loaded in the Y1 direction and the center hole Da of the disk D reaches a position slightly on the Y2 side from matching the turntable 22, the front edge of the disk D on the insertion side is It hits the detection pin 96. Further, when the disk D is conveyed in the Y1 direction and the center hole Da substantially coincides with the turntable 22, the detection pin 96 is pushed in the Y1 direction at the edge of the disk D, and as shown in FIG. It is turned clockwise.

  As shown in FIG. 7, when the detection member 94 is rotated in the clockwise direction, the engagement member 51 opposes the urging force of the compression spring 54 by the trigger pin 97 provided on the detection member 94 in the Y2 direction. The rack teeth 52 that are pushed out and formed on the meshing member 51 mesh with the pinion gear 57. As described above, since the pinion gear 57 is rotating clockwise at this time, the meshing member 51 is pulled in the Y2 direction by this rotational force, and the switching slider 15 is also pulled in the Y2 direction following this. Thus, the rack teeth 53 provided on the switching slider 15 mesh with the pinion gear 57 together with the rack teeth 52.

  Thereafter, the switching slider 15 is moved in the Y2 direction by the rotational force of the pinion gear 57. Immediately after the start of the movement, the switching pin 91 provided on the switching arm 88 is released from the meshing portion 92a of the switching cam portion 92 and guided to the detaching portion 92b. Accordingly, the switching arm 88 is rotated clockwise, and the switching gear 87 supported by the switching arm 88 is released from the relay gear 86 as shown in FIG. Therefore, immediately after the center hole Da of the disk D coincides with the turntable 22, the roller drive transmission path from the motor M to the transport roller 28 is cut off, and the rotation of the transport roller 28 stops.

  When the switching slider 15 further moves in the Y2 direction after the rotation of the conveying roller 28 is stopped, the restricting portion 15b that is the side on the X1 side of the switching slider 15 is brought into contact with the restraining member 74 as shown in FIG. The restriction release portion 15c of the switching slider 15 is opposed to the contact portion 74b. The restraining member 74 whose restriction from the restriction portion 15 b is released is rotated clockwise by the urging force of the urging member 75, and the hook 74 a is separated from the locking portion 65 b of the switching member 65.

In the state of FIG. 8, the planetary gear 63 rotates in the clockwise direction, and a load for driving the switching slider 15 acts on the intermediate gear 61. Therefore, when the restraint of the switching member 65 is released, the teeth of the planetary gear 63 rotating in the clockwise direction move away from the teeth of the intermediate gear 61, and the teeth of the planetary gear 63 are relayed as shown in FIG. It meshes with the teeth of the member 72. Further, the planetary gear 63 rotating in the clockwise direction rolls on the relay member 72 while meshing with the relay member 72 and moves in a counterclockwise direction as shown in FIG. 12, and the switching member 65 is shown in FIG. It reaches the blocking position by increasing rotated counterclockwise as shown.

  During this time, the transmission member 68 is rotated clockwise by the switching portion 71a of the cam portion 71 provided in the switching member 65, and the transmission convex portion 36c held in the transmission concave portion 68a of the transmission member 68 is in the outer circumferential direction So. The rack member 36 is moved in the direction So by the elastic force of the compression spring 38, and the rack teeth 37 of the rack member 36 mesh with the pinion gear 41. At this time, the planetary gear 63 is rotating in the clockwise direction, and the pinion gear 41 is also rotating in the clockwise direction. Therefore, the rack 36 is pulled in the So direction by the pinion gear 41, and the transmission convex provided on the rack member 36. The part 36 c comes out of the transmission recess 68 a of the transmission member 68.

  When the transmission convex portion 36c comes out of the transmission concave portion 68, the transmission shaft 69 provided on the transmission member 68 enters the holding portion 71b of the cam portion 71 of the switching member 65, as shown in FIGS. . In the state shown in FIG. 12, the holding portion 71 b is set so as to follow an arc locus having a certain radius R from the center of the shaft 67 that supports the transmission member 68. Therefore, in the state of FIG. 9 and FIG. 12, the transmission member 68 and the switching member 65 are stabilized without inadvertent movement.

  As described above, when the switching slider 15 moves in the Y2 direction to the second position shown in FIG. 9, the disk drive mode is set. In this disk drive mode, the switching slider 15 is biased in the Y2 direction by the biasing force of the reversing spring 29, and the switching slider 15 is stabilized at that position.

(Disk drive mode)
As shown in FIG. 9, in the disk drive mode, the bearing portion 36a of the rack member 36 is brought into close contact with the bearing portion 34a of the optical pickup 31 by the expansion elastic force of the compression spring 38. In this state, the optical pickup 31 and the rack The member 36 is integrated and can move along the guide shaft 32 and the guide portion 33.

  In the disk drive mode, as shown in FIGS. 9 and 12, the switching member 65 rotates counterclockwise, the planetary gear 63 is disengaged from the intermediate gear 61, and the power transmission path to the intermediate gear 61 is interrupted. ing.

  When the motor M is driven in either the forward or reverse direction in this state, the rotational power of the worm gear 47 is transmitted to the transmission gear 42 via the drive gear 45 and the sun gear 46, and the pinion gear 41 is driven. In the disk drive mode, when the pinion gear 41 is driven clockwise by the rotation of the motor M, the optical pickup 31 moves toward the outer peripheral direction So, and when the pinion gear 41 is driven counterclockwise, The pickup 31 is driven toward the inner circumferential direction Si.

  In the disk drive mode, as shown in FIG. 9, the switching slider 15 and the switching shaft 16 provided on the switching slider 15 are moved in the Y2 direction, so that the lower chassis 11 is connected to the connecting shaft 13 as shown in FIGS. The center hole Da of the disk D is sandwiched between the turntable 22 and the clamper 23. Further, as shown in FIG. 4, the lock member 18 rotates clockwise, the lock member 18 is separated from the upper housing 2 and the lower housing 3, and the drive unit 10 is elastically supported by the dampers 5 and 7.

  In this disk drive mode, the disk D is rotated by the spindle motor 26, and the optical pickup 31 is driven in the Si-So direction by the power of the motor M to read a signal recorded on the disk D, or the disk A signal is written to D.

(Switch to insertion standby mode)
Switching from the drive mode shown in FIG. 9 to the insertion standby mode shown in FIG. 6 is performed by driving the motor M from the disk drive mode to move the optical pickup 31 toward the inner circumferential direction Si. When the rack member 36 moves in the inner circumferential direction Si together with the optical pickup 31, the transmission convex portion 36c provided on the rack member 36 is fitted into the transmission concave portion 68a of the transmission member 68, and is transmitted by the moving force of the rack member 36. The member 68 is rotated counterclockwise.

  When the transmission member 68 rotates counterclockwise and the transmission shaft 69 enters the switching portion 71a of the cam portion 71, the moving force of the rack member 36 acts on the switching member 65 via the transmission member 68, and the switching member. 65 is rotated clockwise. At this time, the rotation direction of the sun gear 46 is clockwise, and the rotation direction of the planetary gear 63 is counterclockwise. Therefore, when the switching member 65 is slightly rotated clockwise, the teeth of the planetary gear 63 mesh with the teeth of the relay member 72, and the planetary gear 63 moves over the relay gear 72 by its own rotational force and planetarily moves in the clockwise direction. Further, it meshes with the intermediate gear 61.

  Thus, the turning force of the switching member 65 is transmitted to the transmission member 68 via the cam portion 71 while the switching member 65 is rotated clockwise by the counterclockwise rotational force of the planetary gear 63. The transmission member 68 further rotates counterclockwise with the transmission convex portion 36c held in the transmission concave portion 68a. Therefore, after the optical pickup 31 stops at the moving end in the inner circumferential direction Si, the rack member 36 is further moved in the Si direction by the rotational power of the planetary gear 63. At this time, as shown in FIG. 6, the bearing member 36a of the rack member 36 is separated from the bearing member 34a of the optical pickup 31, and the compression spring 38 is compressed.

  In this way, when the switching member 65 rotates clockwise and the planetary gear 63 meshes with the intermediate gear 61, the power of the planetary gear 63 passes through the intermediate gear 62, the transmission gear 58, and the pinion gear 57 to the rack. It is transmitted to the teeth 52 and 53. Since the rotation direction of the pinion gear 57 at this time is counterclockwise, the switching slider 15 is moved in the Y1 direction by the rotational force of the pinion gear 57. And it returns to the insertion waiting mode shown in FIG.

  13 and 14 show a disk device 101 according to the second embodiment of the present invention. 13 and 14 are bottom views of the same lower chassis 11 as shown in FIGS. 13 is the same standby mode as FIG. 6, and FIG. 14 is the same drive mode as FIG.

  The disk device 101 of the second embodiment is different from the disk device 1 of the first embodiment shown in FIGS. 1 to 12 only in the portions shown in FIGS. 13 and 14, but the other structures and The operation and the like are all the same as those of the disk device 1 of the first embodiment. In FIG. 13 and FIG. 14, the same members as those of the disk device 1 of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In this disk device 101, the switching member 165 is provided so as to be rotatable about the shaft 44. However, the shape of the locking portion 165b of the switching member 165 is different from that of the switching member 65 of the first embodiment. is doing. Further, the restraining member 174 is provided so as to be rotatable about the shaft 73 and is urged clockwise by the urging member 75.

  The hook 174a of the restraining member 174 is different in shape from the hook 74a of the restraining member 74 of the first embodiment, but the hook 174a is connected to the locking portion 165b of the switching member 165 in the insertion standby mode shown in FIG. By being locked, the rotation of the switching member 165 in the counterclockwise direction is restricted. The restraining member 174 is provided with a control shaft 174b instead of the contact portion 74b shown in FIG.

  The switching slider 115 shown in FIGS. 13 and 14 exhibits the same function as the switching slider 15 of the first embodiment, but this switching slider 115 is provided with a cam portion 116. The cam portion 116 is a cam hole. The cam portion 116 includes a straight portion 116a that linearly extends in the Y1-Y2 direction, which is the moving direction of the switching slider 115, a first holding portion 116b that is formed at the end of the straight portion 116a on the Y2 side, It has the 2nd holding | maintenance part 116c formed in the edge part by the side of Y1 of the part 116a.

  In the state of FIG. 13, the first holding part 116b is formed along an arc locus having a constant radius R1 from the center of the shaft 73. The second holding portion 116c is formed to bend in the X2 direction from the straight portion 116a.

  The meshing member 151 has the same function as the meshing member 51 of the first embodiment, and has rack teeth 52 as in the first embodiment. A cam portion 152 is formed on the meshing member 151. The cam portion 152 is a cam hole. The cam portion 152 includes a straight portion 152a that overlaps the straight portion 116a, an inclined portion 152b that extends obliquely from the end of the straight portion 152a on the Y2 side toward the X1 direction, and an end portion of the inclined portion 152b that extends in the Y2 direction. And a constraining portion 152c that extends.

  The control shaft 174 b formed on the restraining member 174 is slidably inserted into both the cam portion 116 and the cam portion 152.

  In the insertion standby mode shown in FIG. 13, the control shaft 174 b is held by the first holding portion 116 b of the cam portion 116 and the holding portion 152 c of the cam portion 152. In FIG. 13, the engagement member 151 is urged in the Y1 direction on the switching slider 115 by the elastic force of the compression spring 54. With this urging force, the control shaft 174 b is held by the holding portion 152 c of the cam portion 152.

  In the insertion standby mode of FIG. 13, the restraining member 174 does not rotate clockwise by holding the control shaft 174b on the holding portion 152c. The switching slider 115 is also held in a state where it has moved in the Y1 direction, that is, at a position where the rack teeth 52 and 53 do not mesh with the pinion gear 57.

  Next, from the state of FIG. 13, when the engagement member 151 is pushed in the Y2 direction by the trigger pin 97, the control shaft 174b is released from the holding portion 152c. Therefore, the restraining member 174 is rotated clockwise by the urging force of the urging member 75, and the control shaft 174b reaches the linear portions 116a and 152a along the first holding portion 116b of the locus of the radius R1. Therefore, the switching slider 115 can move, and the switching slider 115 moves in the Y2 direction by the rotational force of the pinion gear 57. When the control shaft 174b is positioned at the straight portions 116a and 152a, the hook 174a is still locked to the locking portion 165b and the rotation of the restraining member 165 in the counterclockwise direction is restrained.

  When the switching slider 115 moves in the Y2 direction and the disk drive mode shown in FIG. 14 is set, the restraining member 174 is rotated clockwise by the biasing force of the biasing member 75, and the control shaft 174b is moved to the switching slider. 115 enters the second restraining portion 116 c of the cam portion 116 provided in 115. At this time, the hook 174a is disengaged from the locking portion 165b, and the switching member 165 can be rotated counterclockwise.

  In addition, in the state of FIG. 14, the control shaft 174b enters the second restraining portion 116c, so that the switching slider 115 is restrained from moving in the Y1 direction.

  In the disk device 101 of the second embodiment, the control shaft 174b of the restraining member 174 is held by the cam portion 116 provided on the switching slider 115 and the cam portion 152 provided on the meshing member 151. As a result, the posture of the restraining member 174 is restricted, and the switching slider 115 can be held without moving in the insertion standby mode shown in FIG. 13 and the disk drive mode shown in FIG. Therefore, the reversing spring 29 provided in the first embodiment is not necessary, and the switching slider 115 can be held at both moving end portions more stably than those using the reversing spring 29.

The present invention can be modified as follows in addition to the above embodiment.
In the illustrated embodiment, the restriction member 15 of the switching slider 15 restricts the rotation of the restraining member 74 in the clockwise direction, and the restraining member 74 restricts the rotation of the switching member 65 in the counterclockwise direction. The movement of the switching member 65 may be directly restricted by the restricting portion 15b without providing the restraining member 74.

  Further, the switching member 65 is not limited to the one that rotates, and may move linearly and control the position of the planetary gear 63 by the operation.

1 is an exploded perspective view showing a drive unit of a disk device according to a first embodiment of the present invention; A side view of the disk device showing the insertion standby mode, A longitudinal sectional view of the disk device showing the insertion standby mode, A side view of the disk device showing the disk drive mode, Sectional view of the disk device showing the disk drive mode, It is a bottom view of the lower chassis of the disk drive unit, showing the insertion standby mode, It is a bottom view of the lower chassis of the disk drive unit, and shows a state in which the completion of disk insertion is detected. It is a bottom view of the lower chassis of the disk drive unit, showing the switching operation from the insertion standby mode to the drive mode, It is a bottom view of the lower chassis of the disk drive unit, showing the drive mode, A partially enlarged view of FIG. A partially enlarged view showing the transition from the insertion standby mode to the disk drive mode, A partially enlarged view of FIG. The partially expanded bottom view which shows the insertion standby mode of the disc apparatus of the 2nd Embodiment of this invention, The partially expanded bottom view which shows the disk drive mode of the disk apparatus of the 2nd Embodiment of this invention,

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Disk apparatus 2 Upper housing | casing 3 Lower housing | casing 5,7 Damper 10 Drive unit 11 Lower chassis 12 Upper chassis 15 Switching slider 15b Control part 18 Locking member 21 Locking shaft 22 Turntable 23 Clamper 28 Carrying roller 30 Mode switching device 31 Pickup 32 Guide shaft 33 Guide portion 34a, 34b Bearing portion 35 Sliding portion 36 Rack member 36a, 36b Bearing portion 36c Transmission convex portion 37 Rack tooth 38 Compression spring 41 Pinion gear 46 Sun gear 51 Meshing member 52, 53 Rack tooth 54 Compression Spring 57 Pinion gear 63 Planetary gear 65 Switching member 68 Transmission member 68a Transmission recess 69 Transmission shaft 71 Cam portion 72 Relay member 74 Restraining member 74a Hook 74b Contact portion 87 Switching gear 88 Switching arm 115 Switching slider 116 Arm portion 151 meshes was member 152 cam portion 165 switching member 174 restraining member 174b control shaft

Claims (4)

A head (31) facing the recording surface of the disk (D), guide means (32, 33) for guiding the head (31) along the recording surface, and a rack member (moving together with the head (31)) 36), a biasing member (38) between the head (31) and the rack member (36) for biasing the rack member (36) in the outer circumferential direction (So) of the disk, and the rack member ( 36) The pinion gear (41) that can mesh with the rack teeth (37) of 36), the motor (M) that drives the pinion gear (41), and the disc (D) clamped by the rotational drive unit (22) is released. And a switching slider (15) that moves between a first position for rotating and a second position for clamping the disk (D) to the rotary drive unit (22), and a side of the switching slider (15). Ruler Parts and (15b),
Power transmission from the sun gear (46) driven by the motor (M), the planetary gear (63) meshing with the sun gear (46), and the sun gear (46) to the switching slider (15) A switching member (65) that moves between a transmission position that sets the planetary gear (63) to a position that forms a path and a blocking position that disconnects the planetary gear (63) from the power transmission path ;
A transmission member (68) for transmitting the moving force to the switching member (65) when the rack member (36) moves in the inner circumferential direction (Si) of the disk;
In the state where the switching slider (15) is set to the second position, the moving force when the rack member (36) moves in the inner circumferential direction (Si) of the disk (D) is the transmission member ( 68) is transmitted to the switching member (65) via 68), the switching member (65) starts to move from the blocking position to the transmission position,
Thereafter, the switching member (65) moves toward the transmission position by the rotational force of the motor (M), and the movement force is applied to the rack member (36) via the transmission member (68). The rack member (36) is pulled in the inner circumferential direction (Si) of the disk against the urging force of the urging member (38), and the rack teeth (37) and the pinion gear (41) are engaged with each other. Is cut off, the power transmission path is formed, and the switching slider (15) is moved to the first position,
When the switching slider (15) is in said first position, and the switching slider by the rotational force of said motor (M) - (15) were it to move toward the second position from the first position when it is, the restricting portion (15b) is, the switching member (65) and sliding or by sliding restraining member and (74) for constraining the switching member (65), said switching member (65) is Restricted to the transmission position, the power transmission path continues to be formed,
When the switching slider (15) moves to the second position, the restriction by the restriction portion (15b) is released, and the switching member (65) is moved by the rotational force of the motor (M). While moving from the transmission position to the blocking position, the moving force is transmitted to the rack member (36) via the transmission member (68), and the rack member (36) meshes with the pinion gear (41). A disk device characterized by being moved to . The cams unit for switching slider (15) (92) is provided, wherein the cam portion (92) switching arm (88) is connected slidably, the switching arm (88), said cam portion A switching gear (87) is provided on the side opposite to the (92) side,
When the switching slider (15) is in the first position, the roller is transferred by the switching gear (87), the power of the previous SL motor (M) to the disc conveying roller for conveying a (D) (28) A power transmission path is formed,
When the switching slider (15) moves from the first position to the second position, the switching arm (88) slides on the cam portion (92) and the switching gear (87) moves. The disk device according to claim 1 , wherein the roller power transmission path is interrupted. Wherein when switching member (65) is restricted to the transfer position, are blocked thread power transmission path from the previous SL motor (M) Previous Kihe head (31), said switching member (65 3. The disk device according to claim 1 , wherein the sled power transmission path is formed by moving the transmission power from the transmission position to the blocking position . A meshing member (51) that can move relative to the switching slider (15) by a predetermined distance is provided, and rack teeth (52, 53) are provided on the meshing member (51) and the switching slider (15). And the pinion gear (57) driven by the motor (M) via the sun gear (46) and the planetary gear (63) when the switching member (65) is in the transmission position. Provided,
When the switching slider (15) is in the first position and the disk (D) is moved to a predetermined position, the engagement member (51) is moved to the second position by the moving force of the disk (D). The disk device according to any one of claims 1 to 3, further comprising a trigger member (97) that is moved to a position and meshes the rack teeth (52, 53) with the pinion gear (57).

Images