JP2008117464A - Disk unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a flexible printed circuit board from pressing a bottom chassis even when an elevator frame of a slot-in disk unit falls down. <P>SOLUTION: The disk unit clamps or unclamps at a center hole of a disk with a clamp head by using a base part of the elevator frame as a rotating axis and vertically oscillating the front edge of the elevator frame. It supports with cushioning a sub guide shaft for supporting a carrier block with an optical pickup installed therein, sets a projection at a part of an edge of the carrier block facing the bottom chassis, and presses the projection to the bottom chassis when the carrier block falls down, thereby avoiding the flexible printed circuit board laid in the rear surface of the carrier block from pressing the bottom chassis. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a disk (for example, CD-R / RW, DVD-R / -RW / RAM / + R / + RW, etc.) that serves as a medium for optically recording a large amount of information in information devices such as various computer systems. ).

  Generally, a personal computer (hereinafter referred to as a personal computer) or the like has a built-in disk device for driving a disk. In response to the demand for downsizing and thinning the personal computer body, this disk device is also becoming smaller and thinner. Improvements are underway. A general loading method of a disk in such a disk apparatus is as follows. 1. A method of loading a disc by placing it on a disc tray. 2. A method in which a disc is directly mounted on the clamp head of the disc tray. It can be roughly divided into a slot-in method in which the disc is inserted from the front bezel.

  In the slot-in type disk apparatus, the loading of the disk into the apparatus main body is automatically performed by the operator inserting a part of the disk into the slot of the front bezel, and thereafter the loading mechanism in the apparatus is activated. Since the disc is loaded on the disc and no disc tray is used, the thickness can be reduced most in each of the above systems.

  45 to 47 show the configuration and operation of the loading mechanism in a conventional slot-in type disk apparatus. In the configuration shown in the drawings, when the operator inserts the disk D from the slot of the front bezel, the disk D is inserted into the pin 100a at the tip of the first rocking body 100, the left and right guide bodies 101 and 102, and the middle from the middle. 45 reaches the position shown in FIG. 45 while being guided in the height direction and the left-right position by the pin 103a at the tip of the second oscillator 103.

  At this time, the first rocking body 100 is rotated in the direction of arrow 100A by pushing the pin 100a at the tip by the disk D, and the pin 103a at the tip is pushed by the disk D in the second rocking body 103 as well. Rotate in the 103A direction. Then, the switch lever 104 is pushed by the end of the second oscillating body 103 and rotates in the direction of the arrow 104A, and the detection switch 105 is operated.

  When the detection switch 105 is activated, the driving means 106 is started, and the movement of the first slide member 107 in the direction of the arrow 107A is started. The first slide member 107 and the second slide member 108 are connected at their respective ends by a slide connecting member 109, and the slide connecting member 109 is pivotally supported by a pin 110 so that the first slide member 107 and the second slide member 108 are pivoted. The second slide member 108 advances in the direction of the arrow 108A in synchronization with the backward movement of the slide member 107.

  In this way, when the first slide member 107 starts to move backward, the first rocking body rotates in the direction of the arrow 100B, whereby the pin 100a at the tip of the first rocking body 100 causes the disk D to move to the disk positioning member. It carries in to the direction of the arrow 107A until it contacts the pins 111a and 111b of 111 (FIG. 46).

  At this time, since the pin 103a of the second rocking body 103 rotates in the direction of the arrow 103A, the pin 103a of the second rocking body 103 is synchronized with the pin 100a at the tip of the first rocking body 100 so that the disk D is rotated. After contacting the pins 111a and 111b of the disk positioning member 111, the disk positioning member 111 rotates to a position slightly away from the disk D.

  The above is the operation mode of the loading mechanism when the disk D is carried into the apparatus, but the loading mechanism when the disk D is carried out of the apparatus is the operation mode opposite to that described above. That is, when the disk D is in a fixed position inside the apparatus, the first slide member 107 starts to advance in the direction of the arrow 107B when the driving means 106 is started in the reverse rotation direction based on the unloading (unloading) instruction. Then, the second slide member 108 connected to the slide connecting member 109 starts to retract in the direction of the arrow 108B in synchronization. As a result, the first oscillating body 100 rotates in the direction of the arrow 100A and the second oscillating body 103 rotates in the direction of the arrow 103B, so that the disk D is supported by the pins 100a and 103a at the leading ends and carried out of the apparatus. Will be.

  The disk D carried into the apparatus is clamped by a clamp head 112 that moves up and down at a fixed position. The clamp head 112 is integrated with a turntable 113 fixed to the drive shaft of the spindle motor 114, and the spindle motor 114 is disposed on a lifting frame 115, and the lifting frame 115 is moved up and down by a lifting mechanism. Like to do. The elevating mechanism has crank-shaped cam grooves of the same shape as shown in FIG. 47 formed on the side surfaces of the first slide member 107 and the second slide member 108, and the first and second slide members. The elevating frame 115 is moved up and down by the horizontal movement of 107 and 108.

This figure exemplifies a portion of the first slide member 107. The driven pins 116a and 116b fixed to the elevating frame 115 are engaged with the cam grooves 107a and 107b. Therefore, FIG. As shown in FIG. 5, when the driven pins 116a and 116b are at the lower positions of the cam grooves 107a and 107b, the elevating frame 115 is lowered most. Then, as the first slide member 107 moves horizontally in the direction of 107A, the driven pins 116a and 116b ascend the inclined portions of the cam grooves 107a and 107b, so that the elevating frame 115 rises and the cam grooves 107a and 107b As shown in FIG. 47B, the clamp head 112 clamps the disk D at the highest position and fixes it to the turntable 113. When the first slide member 107 further moves in the direction 107A from this state, the driven pins 116a and 116b are slightly lowered to the high positions of the cam grooves 107a and 107b as shown in FIG. The drive becomes possible.
JP 2002-117604 A

  Thus, in the case of the configuration of the disk device as described above, the stroke width of the vertical movement is such that the clamp head can be lowered to a position where the disk can be loaded while the clamp head can be raised to a position where the disk can be clamped. It is necessary to ensure. For this reason, in the case of the lifting mechanism in the conventional disk device, the lifting frame is lifted and lowered in a horizontal state. However, since the stroke width of the vertical movement of the lifting frame is always constant, the thickness of the lifting frame increases. As a result, the thickness of the entire disk device becomes large, and the mechanism for raising and lowering the elevating frame in a horizontal state becomes complicated, which is disadvantageous for downsizing and thinning.

  On the other hand, the disk can be clamped and released by swinging the front end of the lifting frame without moving the lifting frame horizontally. This is because the elevating frame arranged on the spindle motor with the turntable and clamp head fixed to the drive shaft is arranged in the direction along the diagonal line inside the device, and the front end is the vertical direction with the base end of this elevating frame as the rotation axis It is made to rock.

  When lowering the front end of the lifting frame in such a manner that the disk is clamped and released by swinging the front end of the lifting frame in this way, the carrier block incorporating the optical pickup unit is always on the front bezel side, i.e. It must be retracted to the outer periphery of the disk. This is because when the carrier block is on the clamp head side, that is, on the inner peripheral side of the disk when the front end of the lifting frame is lowered, the end of the back side of the carrier block comes into contact with the bottom chassis. There is a possibility that the flexible printed circuit board provided on the back surface of the block is pressed against the bottom chassis and the wiring of the flexible printed circuit board is cut.

  By the way, in the slot-in type disk device, the internal structure is not exposed to the outside at all, so the elevating frame is in a state where the carrier block is on the inner peripheral side of the disk due to an unavoidable factor such as a power failure due to a power failure. Even if there is an unforeseen situation in which the disk descends, it is necessary to manually operate the emergency mechanism from the outside of the apparatus so that the disk remaining inside the apparatus can be recovered.

  However, since the end of the lower surface of the carrier block of the lifted frame that is lowered presses the flexible printed circuit board against the bottom chassis, if the emergency mechanism is manually operated in this state, the carrier block remains pressed against the flexible printed circuit board. The possibility of moving in the outer peripheral direction and cutting the wiring of the flexible printed circuit board becomes extremely high.

  The present invention has been made in view of such a problem, and the end of the carrier block bottoms the flexible printed circuit board even in an unforeseen situation in which the elevating frame descends while the carrier block is on the inner peripheral side of the disk. An object of the present invention is to enable manual operation of the emergency mechanism without damaging the flexible printed circuit board without being pressed against the chassis.

  Therefore, the present invention solves the above problems by the means described below. That is, according to the first aspect of the present invention, there is provided a disk drive mechanism comprising a turntable having a clamp head and a spindle motor, and an elevating frame provided with an optical pickup unit that moves forward and backward in the diameter direction of the disk with respect to the clamp head. It is arranged in the direction along the diagonal line inside, and the center end of the disc can be clamped or released by the clamp head by swinging the front end up and down with the base end of this lifting frame as the rotation axis The disk device is configured to buffer and support an end portion of the sub guide shaft that supports the carrier block incorporating the optical pickup unit, and a protrusion is formed on a part of the end portion of the carrier block facing the bottom chassis. When the carrier block is lowered There abuts the bottom chassis, the flexible printed circuit board which is laid on the back surface of the carrier block so as not pressed against the bottom chassis.

  According to a second aspect of the present invention, in the disk device according to the first aspect, the protrusion is formed at a support position of the carrier block by the sub guide shaft.

  According to a third aspect of the present invention, in the disk device according to the first aspect, a window hole is formed in a flexible printed board laid on the back surface of the carrier block.

  According to a fourth aspect of the present invention, in the disk device according to the first aspect, the protrusion is formed at a position separated from a flexible printed circuit board laid on the back surface of the carrier block.

  According to the present invention, in the slot-in type disc apparatus in which the front end portion of the lifting frame is swung to perform the disc clamping operation, the carrier block incorporating the optical pickup unit is on the inner peripheral side of the disc Even in the unlikely event that the elevating frame descends, the end of the carrier block does not press the flexible printed circuit board against the bottom chassis, thereby manually operating the emergency mechanism without damaging the flexible printed circuit board. Enable operation.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In order to facilitate understanding of the present invention, a description will be given including an overview of known configurations.

  FIG. 1 is a diagram showing an external appearance of a slot-in type disk device 1 embodying the present invention, and a chassis case 2 in which a cover chassis 2A and a bottom chassis 2B are combined to form a shield state is configured. An opening 2a that faces a clamp head, which will be described later, is formed at the center of the top plate of the cover chassis 2A, and a convex portion 2b that protrudes into the apparatus is formed at the periphery of the opening 2a.

  A front bezel 3 is disposed at the front end of the chassis case 2. The front bezel 3 is formed with a slot 3a for inserting a disk D and through holes 3b and 3c for releasing emergency. Further, the front bezel 3 includes a push button 4 for instructing to carry out the loaded disk D to the outside of the apparatus and an indicator 5 for displaying the operation state of the disk apparatus 1.

  FIG. 2 is a plan view of the disk device 1 with the cover chassis 2A removed, and a perspective view thereof is shown in FIG. In the figure, a base panel 6 is disposed on the bottom chassis 2B, and an elevating frame 10 is disposed obliquely downward from the center thereof, that is, along a diagonal line inside the apparatus. A drive unit A for driving the disk D is provided.

  The drive unit A is mainly composed of a spindle motor 9 having a turntable 7 and a clamp head 8 fixed to a drive shaft, and a support plate 9a fixed to the spindle motor 9 is moved up and down through a frame member 10d. 10 is screwed. Therefore, when the elevating frame 10 moves up and down, the center hole Da of the disk D is clamped by the clamp head 8 and held on the turntable 7. The vertical movement of the lifting frame 10 is performed by guiding the driven pins 11 and 12 fixed to the lifting frame 10 to a lifting mechanism described later.

  Further, as shown in FIG. 4 with the bottom chassis 2B removed, the elevating frame 10 is provided with a drive mechanism for moving the carrier block 14 incorporating the optical pickup unit 13 forward and backward. The structure of the part is shown in FIG. In this drive mechanism, as shown in the figure, the bearing portion 14a of the carrier block 14 is slidably attached to the main guide shaft 15, and the bearing portion 14b is slidably attached to the auxiliary guide shaft 16, thereby the carrier The block 14 can be moved forward and backward.

  A screw shaft 17 is disposed in the elevating frame 10 in parallel with the main guide shaft 15, and a driving force of a thread motor 19 is transmitted to the screw shaft 17 by a gear train unit 18. As a result, the nut 20 meshing with the lead groove 17a of the screw shaft 17 is driven, and the bearing portion 14a integrated with the carrier block 14 holding the nut 20 is guided by the main guide shaft 15 to reciprocate. Therefore, the optical pickup unit 13 incorporated in the carrier block 14 moves in parallel with the recording surface of the disk as the carrier block 14 reciprocates, and information can be recorded or reproduced.

  As described above, the clamp head 8 moved up and down by the lift frame 10 clamps the center hole Da of the disk D or releases the clamped state. It is attached to the panel 6 so that it can be raised and lowered. That is, in FIG. 4, support tongues 10a, 10b, and 10c are integrally extended at three locations on the outer periphery of the lifting frame 10, and are formed on the back surface of the base panel corresponding to the support tongues 10a and 10b. As shown in FIG. 6, the post pin 21 is erected by an appropriate means such as an end rolling process.

  Then, a buffer member 23 having flexibility is attached to the post pin 21 with a spacer 22 interposed therebetween, and the support tongues 10a and 10b are attached to the concave grooves 23a formed in the buffer member 23. . On the other hand, as shown in FIG. 7, the supporting tongue piece 10c is supported only by the buffer member 23 attached to the post pin 21 without a spacer, and the stroke of the vertical movement is higher than that of the supporting tongue pieces 10a and 10b. The raising and lowering frame 10 is configured to be swingable. The other end of the post pin 21 is screwed to the bottom chassis 2B.

  Next, the drive mechanism C that controls loading and unloading of the disk D will be described. As shown in FIG. 4, the end serving as the swing fulcrum of the disk support arm 24 having the holder 25 at the tip is integrated with the support plate 26 on the back surface of the base panel 6, and this support plate 26 is pivotally supported. Since the pin 27 can be turned, the disk support arm 24 on the base panel 6 swings within the range of the slit 6 a as the support plate 26 turns. As shown in FIG. 8, the holder 25 of the disk support arm 24 has a receiving end 25a at the tip and a holding groove 25b at the side.

  FIG. 9 shows a state in which the drive mechanism C of the disk support arm 24 is configured, with the base panel 6 removed, and the first link arm 28 that directly drives the disk support arm 24 is formed by the support plate 26. It is connected by a pivot pin 26 a and is always urged by a tension coil spring 29. On the other hand, slits 30a and 30b are formed in the second link arm 30 as shown in FIG. 10, and rivet pins 31a and 31b are inserted through the slits 30a and 30b, and the leading ends thereof are the first link arms. The first link arm 28 and the second link arm 30 can be expanded and contracted within the range of the slits 30a and 30b. The first link arm 28 and the second link arm 30 are formed with notches 28c and 30c on which a lock mechanism described later acts.

  Reference numeral 32 denotes a lever arm for transmitting a driving force to the second link arm 30, and a through hole 32a serving as a fulcrum is pivotally supported by a pivot pin 32d so as to be swingable. A pivot pin 32 b is fixed to the working end of the lever arm 32, and the pivot pin 32 b is inserted into the through hole 30 d of the second link arm 30 and the through hole 33 a of the lock lever 33. A torsion coil spring 34 is disposed between the second link arm 30 and the lock lever 33. One end 34a of the second link arm 30 is engaged with the recessed portion 30e of the second link arm 30, and the other end 34b. Is locked to the recess 33 b of the lock lever 33.

  As a result, the locking end 33 c of the lock lever 33 is biased in a direction to engage with the cutout portion 28 c of the first link arm 28 and the cutout portion 30 c of the second link arm 30. A limit switch 35 is provided on the rear surface of the base panel 6 to operate when the first link arm 28 is at a predetermined angle and the switch lever 35a is pressed at the rear end thereof, and the second link. When the arm reaches a predetermined position, an activation pin 36 for pressing the rear end portion 33d of the lock lever 33 is erected on the bottom chassis 2B.

  Next, the configuration of the slider mechanism and the transport mechanism that serve as a power transmission element to the drive mechanism C of the disk support arm 24 will be described. The transport mechanism is roughly divided into a combination of a loading gear unit G1 and a rack gear unit G2. First, the configuration and operation mode of the loading gear unit G1 will be described with reference to FIGS. In the figure, reference numeral 37 denotes a loading motor as a power source. A worm gear 38 is fixed to the output shaft of the loading motor 37 so as to rotate coaxially, and the rotational force of the worm gear 38 is pivotally supported by the gear base 42. The signals are transmitted to the double gears 39, 40 and 41 while being decelerated from the small gear to the large gear.

  In the gear configuration, the double gear 39 includes a release mechanism that releases the meshed state with the worm gear 38. This is because the end portion 43a of the holder 43 that is slidable in the vertical direction while holding the double gear 39 is inserted into the pivot pin 44 and is urged downward by the compression coil spring 45 to be pivotally supported. In this state, as shown in FIG. 11C, the worm gear 38 and the double gear 39 are in a normal meshing state. A dog head 43b is formed at the end of the holder 43 on the loading motor 37 side so that the knob 46a of the limit switch 46 fixed to the gear base 42 can be operated.

  On the lower surface of the end portion 43 a of the holder 43, a slider member 47 that is pivotally supported coaxially with the pivot pin 44 is provided. A long groove 47 a is formed in a portion of the slider member 47 that is pivotally supported by the pivot pin 44 so that the slider member 47 can slide in a direction perpendicular to the end 43 a of the holder 43. The slider member 47 has an inclined surface 47b formed between the front end and the rear end. When the slider member 47 is advanced, the inclined surface 47b pushes up the end 43a of the holder 43 from the bottom surface. The entire holder 43 is raised.

  Further, a long groove 47d having a locking step portion 47c that is pivotally supported by the pivot pin 48 is formed at the rear end of the slider member 47, and further, an action having a sealing projection 47e at the rear end portion. A piece 47f is formed. On the other hand, a reset piece 47g that is activated in accordance with the movement of the rack gear unit G2 is formed at the front end of the slider member 47.

  The slider member 47 configured integrally as described above is provided with a tension coil spring 49 that is inclined between the hook piece 47h and the hook piece 42a of the gear base 42 so as to be inclined. Is urged to rotate counterclockwise while always moving backward.

  By configuring the slider member 47 as described above, the slider member 47 uses the pivot pin 44 as a fulcrum in the steady state shown in FIG. In this state, when the slider member 47 is pushed forward from the rear end portion and the locking step portion 47c of the long groove 47d reaches the position of the pivot pin 48, the slider member 47 pivots due to the tension of the tension coil spring 49. The pin 44 is turned around the fulcrum, and the locking step 47c and the pivot pin 48 are engaged and locked as shown in FIG. 12, and the posture is maintained.

  Next, in the rack gear unit G2, as shown in FIG. 13, gear trains 50a and 50b are formed integrally with the loading slider 50, and the gear train 50a meshes with the small-diameter gear of the double gear 41 of the loading gear unit G1. Therefore, by driving the loading motor 37, the loading slider 50 moves forward or backward in the chassis case 2. By moving the loading slider 50 forward or backward in this manner, the drive mechanism C connected to the tip of the loading slider 50 is driven to swing the disk support arm 24, and the surface of the base panel 6 shown in FIG. Thus, the attracting arm 57 is swung by the lever arm 51 connected to the loading slider 50.

  On the loading slider 50 configured in this manner, a gear member 52 that moves forward and backward at the tip of the loading slider 50 is arranged in an idle state. The gear member 52 is pushed forward and forward to block 53a forward and backward. -The pressing pin 53 provided with 53b is arrange | positioned. The gear train 50b and the gear member 52 are engaged with and coupled to a double gear 54 that is attached to the gear frame 55 so as to freely rotate. In this case, the large-diameter gear 54a of the double gear 54 meshes with the rear end portion of the gear train 50b, and the small-diameter gear 54b meshes with the tip end portion of the gear member 52 formed integrally with the block 53b.

  Therefore, when the gear member 52 is pushed by an external force via the pressing pin 53, the double gear 54 rotates at a fixed position, so that the rotational force of the large-diameter gear 54a is transmitted to the gear train 50b, and the loading slider 50 moves. Reference numeral 56 denotes an action piece that presses the reset piece 47g formed at the front end of the slider member 47 of the loading gear unit G1 described above. When the loading gear unit G1 is in the state shown in FIG. When 56 pushes the reset piece 47g of the slider member 47, the engagement between the pivot pin 48 and the locking step portion 47c is released, so that the state shown in FIG. 11 is restored.

  Next, the configuration and operation mode of the attracting arm 57 driven by the loading slider 50 will be described below. FIG. 14 shows a configuration for driving the attracting arm 57. A guide slit 6b is formed in the base panel 6 at a position overlapping with the guide groove 50d formed in the loading slider 50, and the guide groove 50d and the guide groove 50d are guided. The driven pin 58 fixed to the tip of the lever arm 51 is inserted into the slit 6b, and the guide slit 6b located at a fixed position with respect to the guide groove 50d moving forward and backward interacts to control the operation of the driven pin 58. It is like that.

  As shown in FIG. 15, the lever arm 51 is pivotally supported by a pivot pin 60 at a proximal end portion rotatably supported by a pivot pin 59 as shown in FIG. A holding groove for the disk D is formed at the tip of the attracting arm 57, and a roller 61 is disposed inside the holding groove. Since the attracting arm 57 is configured as described above, it swings within the chassis case 2 in accordance with the operation of the lever arm 51 so that the disk D can be carried into the apparatus.

  FIGS. 15 to 19 show an operation mode of the attracting arm 57. FIG. 15 shows a state in which the disk D is inserted into the disk device 1 by the operator. At this time, the front end side in the loading direction of the disk D is shown. Thus, the disk support arm 24 swings backward, and the first link arm 28 operates the limit switch 35 and the drive mechanism C is in an initial state. Therefore, the loading slider 50 is located at the foremost end as shown in the figure, and the lever arm 51 is located at the rear end position of the guide groove 50d.

  In this state, when the drive mechanism C starts operating, the loading slider 50 starts to move backward as shown in FIG. At this time, since the driven pin 58 is sandwiched between the inclined surface of the rear end of the guide groove 50d and the side wall of the guide slit 6b, the driven pin 58 also moves backward as the loading slider 50 moves forward, and the lever arm 51 is moved. By being pulled, the attracting arm 57 swings and the disk D is held by the holder 25 of the disk support arm 24, and the loading of the disk D is started.

  FIG. 17 shows a state in which the loading slider 50 is further retracted and the driven pin 58 reaches the top of the guide slit 6b. The loading of the disk D is continued by the swinging of the attracting arm 57, and the center hole of the disk D is shown. Da reaches a position where it coincides with the clamp head 8. FIG. 18 shows a state in which the loading slider 50 is slightly retracted from the position of FIG. 17, and the driven pin 58 is pushed into the lateral groove at the top of the guide slit 6b by the guide groove 50d.

  FIG. 19 shows a state in which the loading slider 50 is retracted to the final position. In the process from FIG. 18 to FIG. 19, the driven pin 58 is further pushed into the lateral groove at the top of the guide slit 6b by the long groove at the front end of the guide groove 50d. As a result, the attracting arm 57 slightly retracts from the position indicated by the phantom line in FIG. 16 to 19, the center hole Da of the disk D is clamped by the clamp head 8 and held on the turntable 7.

  Next, the operation mode of the disk support arm 24 will be described. The drive mechanism C for driving the disk support arm 24 is constructed by assembling the mechanism elements shown in FIG. 10, and its operation is performed as the loading slider 50 moves forward and backward. That is, in FIG. 20, a driven pin 32c fixed to the end of the lever arm 32 is attached to a guide groove 50e formed in the loading slider 50 so as to be guided by the guide groove 50e.

  The state shown in the figure shows an initial state in which the operator inserts the disk D from the slot 3a of the front bezel 3 and the front end thereof is accommodated in the receiving end 25a of the holder 25 at the tip of the disk support arm 24. . At this time, since the rear end portion 33d of the lock lever 33 is pressed by the activation pin 36, the locking end 33c is interposed in the cutout portions 28c and 30c of the first and second link arms 28 and 30. Not in a state.

  FIG. 21 and FIG. 22 show the state in which the operator further pushes the disk D into the apparatus in a stepwise manner. The disk support arm 24 swings backward and pivots on the base end of the disk support arm 24. The first link arm 28 connected by the support pin 24a is pulled. At this time, since the lever arm 32 is connected to the stationary loading slider 50, the second link arm 30 connected to the lever slider 32 is kept in a fixed position. Accordingly, the first link arm 28 slides and extends on the second link arm 30. Then, when the state shown in FIG. 22 is reached, the limit switch 35 is activated.

  FIG. 23 shows a state where the transport mechanism starts to be driven based on the signal from the limit switch 35 operated as described above, and the loading slider 50 is moving backward. The lever arm 32 is swung by the guide groove 50e of the loading slider 50, and the second link arm 30 slides forward so as to follow the first link arm 28, so that it is released from the pressing by the activation pin 36. The locking end 33c of the lock lever 33 is interposed in the notches 28c and 30c of the first and second link arms 28 and 30, so that the first and second link arms 28 and 30 are locked together. It becomes. In the process from the state shown in FIG. 22 to FIG. 23, the above-described attracting arm 57 is started, and the disk D is held by the holder 25 of the disk support arm 24 and the attracting arm 57.

  FIG. 24 shows a state in which the loading slider 50 is further retracted and the disk support arm 24 swings backward to carry the disk D, and the center hole Da thereof coincides with the clamp head 8. Up to this point, the disk D is held by the holder 25 and the attracting arm 57 of the disk support arm 24, and the disk support arm 24 and the attracting arm 57 swing in synchronization. Then, in the process from FIG. 24 to FIG. 25, the clamp head 8 rises and clamps the center hole Da of the disk D.

  FIG. 26 shows a state in which the loading slider 50 is slightly retracted after the clamp head 8 clamps the center hole Da of the disk D. Thus, at the end of the vertical groove of the guide groove 50e of the loading slider 50, FIG. The lever arm 32 is slightly swung, and the disk support arm 24 and the attracting arm 57 are slightly swung as shown in the figure, so that the holding of the disk D is released, and the drive of the disk D by the turntable 7 is performed. It becomes possible.

  The above is the operation mode of the drive mechanism C when the disk D is loaded, but when the disk D is unloaded, the mechanism element of each part performs the reverse operation following the reverse path. That is, the transport mechanism E is driven in reverse, the loading slider 50 is moved forward, and the disk support arm 24 swings forward from the state shown in FIG. 26 to the state shown in FIG. The end 33d abuts against the activation pin 36. When the loading slider 50 further advances, the rear end portion 33d is pressed by the activation pin 36.

  As a result, as shown by a broken line in FIG. 27, the locking end 33c of the lock lever 33 swings away from the cutout portions 28c and 30c of the first link arm 28 and the second link arm 30, and the first link is released. The lock state in which the arm 28 and the second link arm 30 are integrated is released. At the same time, the urging force of the tension coil spring 29 acts to swing the disk support arm 24 to the position shown in FIG. The disc D is popped out from the slot 3a in the final moment of the final process to complete the carry-out. In this state, the elevating frame 10 is in the most lowered state. At this time, the carrier block 14 is moved to the swinging fulcrum side of the elevating frame 10, so that contact with the bottom chassis 2 </ b> B is avoided. be able to.

  Next, the configuration and operation mode of the lifting mechanism for moving the lifting frame 10 up and down will be described. As is apparent from FIGS. 2 and 9, the lifting frame 10 of the disk device targeted by the present invention is inclined because it is disposed in a direction along the diagonal line inside the device, and its rear end is a corner of the main body. It enters a corner. In such a configuration, the swinging fulcrum of the lifting frame 10 is normally the axis SS in the figure, and the tip of the lifting frame 10, that is, the clamp head 8 moves up and down around this axis. become.

  At this time, the distance from the axis SS to the driven pin 11 is L11, and when the distance from the axis SS to the driven pin 12 is L12, L11 <L12 is satisfied. It moves up and down more than 11. That is, the vertical movement distance of the driven pins 11 and 12 is proportional to the distance from each driven pin to the axis SS, the vertical movement distance of the driven pin 11 is H11, and the vertical movement distance of the driven pin 12 is H12. Then, a relationship of H11 / L11 = H12 / L12 is established.

  The elevating mechanism of the elevating frame 10 includes the driven pins 11 and 12 and the cam groove 50c formed in the loading slider 50 and the cam groove 62a formed in the slide member 62. As described above, the driven pin 11 and the driven frame 10 are driven. Since the distance from the axis SS of the pin 12 is different, the cam grooves 50c and 62a are made to coincide with the locus of the vertical movement of the driven pins 11 and 12. FIG. 28 shows the shape of the cam grooves 50c and 62a formed so as to correspond to such conditions.

  FIG. 28A shows the shape of the cam groove 50c formed in the loading slider 50, and FIG. 28B shows the shape of the cam groove 62a formed in the slide member 62. The state of the driven pin 11 in the cam groove 50c that changes as the loading slider 50 moves forward and backward in the X1-X2 direction is indicated by positions J0 to J5. Further, the state of the driven pin 12 in the cam groove 62a that changes as the slide member 62 advances and retreats in the Y1-Y2 direction is indicated by positions K1 to K5.

  The end of the slide member 62 is connected to an action pin 63a fixed to the end of the link member 63, and the other end of the link member 63 is provided with a driven pin 63b. The driven pin 63b is a loading slider. 50 guide grooves 50f. Since the fulcrum 63c of the link member 63 is rotatably supported, the slide member 62 moves forward and backward in synchronization with the forward and backward movement of the loading slider 50. Therefore, the cam grooves 50c and 62a are also moved forward and backward synchronously, the driven pin 11 moves up and down within the range of the height H11 of the cam groove 50c, and the driven pin 12 moves up and down within the range of the height H12 of the cam groove 62a. It will be.

  The lower portion of the cam groove 50c in the range from the position J0 to the position J1 is set in a horizontal state so as not to respond to the initial operation of the loading slider 50, that is, the operation from FIG. 20 to FIG. In addition, the stroke of the initial operation is absorbed so that the driven pin 11 does not rise. Between the position J1 and the position J4 at the top of the cam groove is an inclined portion for raising the elevating frame 10 to clamp the disk D to the clamp head 8, and the disk D can be driven from the position J4 to the position J5. It becomes a high-order part for doing so.

  On the other hand, the slide member 62 is moved forward and backward synchronously in the range from the position J1 to the position J5 of the cam groove 50c of the loading slider 50, so that it immediately becomes an inclined portion from the lower position K1 and the position of the cam groove top. It reaches K4. The positions K4 to K5 are formed in the same shape as the positions J4 to J5 of the cam groove 50c.

  The relationship between the height H11 from the lower position of the cam groove 50c at the positions J0 to J1 to the top J4 and the height H12 from the position K1 to the top K4 of the cam groove 62a is H11 <H12, and is shown in FIG. Thus, a relative height difference h1 is generated in which the positions J0 to J1 are higher than the position K1. Since the width of the inclined portion between the positions J1 to J4 of the cam groove 50c and the width of the inclined portion between the positions K1 to K4 of the cam groove 62a are the same, the inclined portion of the cam groove 50c having a small height difference is the cam. The groove 62a is inclined more gently than the inclined portion having a large height difference. Therefore, the driven pin 12 rises or falls relatively larger than the driven pin 11 with the same movement amount of the loading slider 50 and the slide member 62, and the driven pins 11 and 12 are in the range of the positions J4 to J5 and the positions K4 to K5. Equivalent height position.

  Next, an operation mode of the elevating frame 10 along the axis RR shown in FIG. 9 will be described below with reference to FIGS. 29 and 30. FIG. 29 shows a process in which the elevating frame 10 is raised. FIG. 29A shows a state in which the elevating frame 10 is lowered most. In FIG. 29, the disk D is inserted from the slot 3a of the front bezel 3. The state immediately after being performed, that is, the state shown in FIG. At this time, the driven pin 11 is at the position J0 of the cam groove 50c, and the driven pin 12 is at the position K1 of the cam groove 62a. Therefore, since there is a height difference h1 between the driven pin 11 and the driven pin 12, the lifting frame 10 is inclined as shown in FIG.

  When the loading of the disk D progresses from the state of FIG. 29A, the stroke of the initial operation of the loading slider 50 is absorbed, that is, the loading slider 50 moves in the X1 direction as shown in FIG. 11 moves from the position J0 of the cam groove 50c to the position J1. Then, when the loading slider 50 further moves in the X1 direction and the driven pin 11 reaches the position J2 of the cam groove 50c and the driven pin 12 reaches the position K2 of the cam groove 62a as shown in FIG. As shown in 29 (B), the position slightly rises from the initial position. At this time, since the driven pin 12 has a larger rising width than the driven pin 11, the elevating frame gradually becomes horizontal.

  When the loading slider 50 further moves in the X1 direction and the slide member 62 moves in the Y1 direction, the driven pin 11 of the cam groove 50c reaches the position J3, and at the same time, the driven pin 12 of the cam groove 62a reaches the position K3. In this process, the chuck claw 8a of the clamp head 8 comes into contact with the center hole Da of the disk D and pushes up the disk D in this state, and the periphery of the center hole Da of the disk D is covered as shown in FIG. It abuts on the protrusion 2b of the opening 2a of the chassis 2A.

  FIG. 29D shows a state in which the driven pin 11 of the cam groove 50c has reached the position J4 and simultaneously the driven pin 12 of the cam groove 62a has reached the position K4, and the clamp head 8 has entered the center hole Da of the disk D. And is in a state corresponding to FIG. 25 held on the turntable 7. When this state is reached, the driven pins 11 and 12 are at the same height, and the lifting frame 10 is in a horizontal state.

  FIG. 29E shows a state where the driven pin 11 of the cam groove 50c has reached the position J5 and at the same time the driven pin 12 of the cam groove 62a has reached the position K5. This is a state that matches FIG.

  Next, a process of lowering the elevating frame 10 in order to carry out the disk D from a state where the disk D can be driven will be described with reference to FIG. FIG. 30A shows a state in which the disk D can be driven as in FIG. 29E, and when the instruction to unload the disk D is received in this state, the reversing operation of the transport mechanism is started. The loading slider 50 starts moving in the X2 direction and the slide member 62 starts moving in the Y2 direction.

  FIG. 30B shows a state in which the driven pin 11 of the cam groove 50c has moved from the position J5 to the position J4, and at the same time the driven pin 12 of the cam groove 62a has reached the position K4 from the position K5. Indicates the state.

  FIG. 30C shows a process in which the driven pin 11 of the cam groove 50c moves from the position J4 through the position J3 to the position J2, and at the same time, the driven pin 12 of the cam groove 62a moves from the position K4 through the position K3 to the position K2. . In the process in which the elevating frame 10 is lowered, the disk D clamped by the clamp head 8 is pushed up by the release pin 64, so that the clamp of the disk D is released.

  FIG. 30D shows a state in which the driven pin 11 of the cam groove 50c has reached the position J2, and at the same time the driven pin 12 of the cam groove 62a has reached the position K2, and the driven pin 12 is lowered relatively larger than the driven pin 11. Therefore, the state in which the elevating frame 10 gradually starts tilting along with this is shown.

  FIG. 30E shows a state in which the driven pin 11 of the cam groove 50c has reached the position J1 and at the same time the driven pin 12 of the cam groove 62a has reached the position K1, and the relative height difference h1 between the driven pins 11 and 12 is shown. This indicates a state in which the lowering of the elevating frame 10 is completed with the maximum inclination, and a gap h2 is formed between the clamp head 8 and the disk D, and the disk D can be carried out. In the inclined state, the portion of the back surface of the elevating frame 10 that is closest to the bottom chassis 2B is the end U of the sub guide shaft 16 (see FIGS. 4 and 5).

  By the way, the screw diameter of the adjusting screw for fixing the main guide shaft 15 and the sub guide shaft 16 in the disk device having the above-described configuration is about 1.4 mm, and a screw hole corresponding to this screw diameter can be formed by tapping. In order to achieve this, the diameters of the main guide shaft 15 and the sub guide shaft 16 must be 2.0 mm or more. In order to be constrained by such conditions, the auxiliary guide shaft 16 is usually 2.0 mm in diameter.

  FIG. 31 shows a state in which the main guide shaft 15 and the sub guide shaft 16 are disposed on the elevating frame 10. One end of the main guide shaft 15 is fixed to a frame member 10 d fixed to the elevating frame 10, and the other end The adjusting screw 70 inserted in a loosely fitted state through a coil spring 71 from a through hole 10e formed in the lifting frame 10 is screwed into the screw hole 15a and fixed. On the other hand, similarly, the sub guide shaft 16 is also fixed by screwing the adjusting screw 70 inserted through the coil hole 71 from the through hole 10e into the screw hole 16a.

  With this configuration, the carrier block 14 is moved up and down by the tilt angle adjustment that causes the main guide shaft 15 and the sub guide shaft 16 to move up and down by rotating the adjusting screw 70, thereby adjusting the focus of the optical pickup unit 13. It becomes possible. When the adjustment screw 70 is rotated and the focus adjustment of the optical pickup unit 13 is finished, the relaxation preventing agent is injected into the threaded portion at the tip of the adjustment screw 70 to fix the adjustment state.

  The end portion U of the auxiliary guide shaft 16 disposed in the lifting frame 10 is in the state shown in FIG. 32, and the end portion U of the auxiliary guide shaft 16 required for the state indicated by the imaginary line where the lifting frame 10 is lowered most. When the distance between the lower surface of the bottom surface and the surface of the bottom chassis 2B, that is, the stroke width is hs1, the thickness of the entire apparatus is W1. FIG. 33 shows a state in which the carrier block 14 is located on the outer peripheral side of the disk when the elevating frame 10 is at its lowest position, and its rear end is substantially the same position as the lower surface of the end U of the sub guide shaft 16. Thus, it can be prevented from contacting the bottom chassis 2B.

  Next, in the configuration of the disk device described above, when the disk D accommodated due to an unexpected situation such as a power failure is left in the apparatus, the emergency mechanism is operated to forcibly eject the disk D. The operation procedure will be described below. As described above, the disk D is ejected by swinging the disk support arm 24. Since the swing of the disk support arm 24 is realized by the backward movement of the loading slider 50, the through hole 3c of the bezel 3 is used. Emergency pin P must be plugged in.

  However, as shown in FIG. 34, when the slider member 47 of the loading gear unit G1 is in the steady state position, the sealing projection 47e closes the through hole 3c and the operation is prohibited. Therefore, since the loading slider 50 cannot be operated in this state, the disk D cannot be ejected even if the emergency pin P is inserted regardless of whether or not the disk D is to be ejected.

  On the other hand, in the case of the operation based on the reliable recognition to eject the disk D, first, as shown in FIG. 35, the emergency pin P is inserted from the through hole 3b of the bezel 3, and the slider member 47 of the loading gear unit G1 is moved. Press. Thereby, the slider member 47 tilts and the sealing state by the sealing protrusion 47e of the through hole 3c is released. At this time, since the inclined surface 47b of the slider member 47 pushes up the end portion 43a of the holder 43 from the bottom surface, the meshing between the worm gear 38 and the double gear 39 is released, and the double gears 39, 40, and 41 are allowed to freely rotate. At this time, if the spindle motor 9 is driving the disk D to rotate, the dog head 43b of the holder 43 drives the knob 46a so that the limit switch 46 is activated and the spindle motor 9 stops driving.

  In this way, after the operation from the through hole 3b is completed, the emergency pin P pulled out from the through hole 3b is inserted into the through hole 3c, and the gear member 52 moves forward as shown in FIG. Accordingly, the loading slider 50 moves backward, whereby the disk support arm 24 swings and the disk D can be ejected as shown in FIG. 4 and FIG. Note that the emergency mechanism is not limited to the above-described configuration, and the gist of the present invention is not changed even if other configurations are adopted.

  Next, the flexible printed circuit board 80 laid on the carrier block 14 will be described. 37 and 38 show a state in which the internal structure of the lifting frame 10 is viewed from the bottom. The flexible printed circuit board 80 laid on the back surface of the carrier block 14 is mainly used for signal transmission with the optical pickup unit 13. A connection terminal 80 a is formed at the end of the flexible printed circuit board 80 for transmitting and receiving and signals for controlling driving of the optical pickup unit 13. The connection terminal 80a is connected to a multi-connector fixed to the base panel 6 so that signals can be exchanged.

  One end of the flexible printed circuit board 80 is fixed to the carrier block 14 by wiring connection, and a folded portion 80b is formed so that the carrier block 14 can be moved forward and backward. The connection terminal 80a is connected to the lifting frame 10. It extends to the side. In this case, in order to avoid contact with a drive mechanism such as the screw shaft 17 and the gear train 18, it extends on the auxiliary guide shaft 16 as shown in FIG.

  By laying the flexible printed circuit board 80 in this way, when the carrier block 14 is positioned on the inner peripheral side of the disk, the bearing portion 14b is positioned on the flexible printed circuit board 80. In such a state, if the lifting frame is lowered due to an unexpected situation such as a power failure, the bearing portion 14b presses the flexible printed circuit board 80 against the bottom chassis 2B as shown in the blow-out diagram of FIG. 39 as shown in FIG. Become.

  In such a state, the bearing portion 14b may cut the printed wiring of the flexible printed circuit board 80. Further, when the emergency mechanism is manually operated from the outside of the apparatus in this state as described above, the bearing portion 14b is flexible. Since the printed board 80 is dragged while being pressed against the bottom chassis 2B, the probability of cutting the printed wiring is increased.

  Therefore, even if the emergency mechanism is manually operated and the disk D remaining in the apparatus can be recovered, if the printed wiring of the flexible printed circuit board 80 is cut, the disk apparatus cannot perform its original function. The system incorporating this disk device becomes unusable.

  Therefore, in the present invention, even when the elevating frame 10 is lowered while the carrier block 14 is on the inner peripheral side of the disk D, the bearing portion 14b of the carrier block 14 does not press the flexible printed circuit board 80 against the bottom chassis 2B. Even if the emergency mechanism is manually operated, the flexible printed circuit board 80 is not damaged and the printed wiring is not cut, so that the disk device is highly reliable.

  40 and 41 are diagrams showing an internal configuration of the elevating frame 10 of the disk apparatus embodying the present invention. Also in the present invention, the flexible printed circuit board 80 is assumed to extend on the sub guide shaft 16, and the protrusion Q is formed on the bearing portion 14b of the carrier block 14. The protrusion Q may be formed integrally with the bearing portion 14b, or a mounting hole may be formed in the bearing portion 14b, and another member may be fixed to the mounting hole.

  On the other hand, at a position where the carrier block 14 is stopped on the innermost peripheral side of the disk D, a window hole 80c is formed in a portion corresponding to the protrusion Q of the bearing portion 14b of the flexible printed circuit board 80. Therefore, when the carrier block 14 is located on the innermost side, the protrusion Q faces the window hole 80c as shown in FIGS.

  With this configuration, when the elevating frame 10 is lowered while the carrier block 14 is on the inner peripheral side of the disk D, the protrusion Q of the bearing portion 14b becomes a window of the flexible printed circuit board 80 as shown in FIG. It faces through the hole 80c and comes into contact with the bottom chassis 2B. Therefore, the bearing portion 14b does not come into contact with the flexible printed circuit board 80 and does not damage the wiring. At this time, the end portion of the sub guide shaft 16 is supported by buffering, so that it slightly floats as shown in FIG.

  Further, when the emergency mechanism is manually operated from the above state, the projection Q moves slightly in sliding contact with the surface of the bottom chassis 2B and then floats from the surface of the bottom chassis 2B, so that the flexible printed circuit board 80 is dragged. There is no. As a result, the disk D can be collected without damaging the flexible printed circuit board 80.

  FIG. 43 shows another example of the present invention, in which the protrusion Q is formed at a position away from the flexible printed circuit board 80, and the height of the protrusion Q is higher than that formed on the bearing portion 14b. As shown in FIG. 44, it is set to such an extent that a gap can be formed such that the bearing portion 14b does not press the flexible printed circuit board 80. Even with this configuration, the same effect as that obtained when the window hole 80c is formed in the flexible printed circuit board 80 can be obtained. However, by not forming the window hole 80c, the printed wiring area can be widened.

  As is apparent from the above description, the disk device embodying the present invention is designed to eliminate the problem that occurs when the lifting frame is lowered while the carrier block is on the inner circumference side of the disk. Although it is an unforeseen event that occurs rarely, by making the disk device ready for such a situation, it is possible to reliably prevent situations in which information devices incorporating the disk device become unusable, Great effects such as improving product reliability.

1 is a perspective view of the appearance of a disk device embodying the present invention. FIG. 2 is a plan view of a state where a cover chassis is removed from the disk device of FIG. 1. FIG. 2 is a perspective view of a state where a cover chassis is removed from the disk device of FIG. 1. FIG. 2 is a plan view of a state where a bottom chassis is removed from the disk device of FIG. 1. It is a figure explaining the drive mechanism which moves an optical pick-up unit forward and backward. It is sectional drawing explaining the support structure of a raising / lowering frame. It is sectional drawing explaining the support structure of a raising / lowering frame. It is a perspective view explaining the structure of a disk support arm. It is a top view explaining the drive mechanism of a disk support arm. It is a principal part disassembled perspective view of the drive mechanism of a disk support arm. It is a figure explaining the structure of a disc conveyance mechanism. It is a figure explaining the structure of a disc conveyance mechanism. It is a perspective view explaining the structure of a rack gear unit. It is a disassembled perspective view explaining the structure for driving an attracting arm. It is a figure of the 1st process explaining the operation mode of an attracting arm. It is a figure of the 2nd process explaining the operation | movement aspect of an attracting arm. It is a figure of the 3rd process explaining the operation | movement aspect of an attracting arm. It is a figure of the 4th process explaining the operation | movement aspect of an attracting arm. It is a figure of the 5th process explaining the operation | movement aspect of an attracting arm. It is a figure of the 1st process explaining the operation mode of a disk support arm. It is a figure of the 2nd process explaining the operation | movement aspect of a disk support arm. It is a figure of the 3rd process explaining the operation | movement aspect of a disk support arm. It is a figure of the 4th process explaining the operation | movement aspect of a disk support arm. It is a figure of the 5th process explaining the operation | movement aspect of a disk support arm. It is a figure of the 6th process explaining the operation | movement aspect of a disk support arm. It is a figure of the 7th process explaining the operation mode of a disk support arm. It is a figure explaining the operation | movement aspect of the disk support arm at the time of disk carrying-out. It is a figure explaining the example of the positional relationship of a cam groove and a driven pin. It is a figure explaining the example of the operation | movement aspect at the time of raising of a raising / lowering frame. It is a figure explaining the example of the operation | movement aspect at the time of the fall of a raising / lowering frame. It is a disassembled perspective view of the assembly state of a guide shaft. It is a figure explaining the fall state of a raising / lowering frame. It is a figure explaining the structure of a sub guide shaft. It is a figure explaining operation of an emergency mechanism. It is a figure explaining operation of an emergency mechanism. It is a figure explaining operation of an emergency mechanism. It is a figure which shows the conventional structure inside a raising / lowering frame. It is a figure which shows the conventional structure inside a raising / lowering frame. It is a figure explaining the generation | occurrence | production state of a malfunction. It is a figure which shows the structure inside the raising / lowering frame which implemented this invention. It is a figure which shows the structure inside the raising / lowering frame which implemented this invention. It is a figure explaining the function of this invention. It is a figure which shows the other example of this invention. It is a figure explaining the function of the structure of FIG. It is the figure of the 1st process explaining the operation | movement aspect of the conventional disc apparatus. It is a figure of the 2nd process explaining the operation | movement aspect of the conventional disc apparatus. It is a figure explaining the operation | movement aspect of the raising / lowering frame of the conventional disc apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Disk device 2 ... Chassis case 2A ... Cover chassis 2B ... Bottom chassis 3 ... ······· Bezel 6 ····························································· Clamp head 9 ··· Spindle motor 10 ··· Elevating frame 11 · 12 · · · Follower pin 13 · · · Optical pickup unit 14 ··· Carrier block 14a, 14b ... Bearing 15 ... Main guide shaft 16 ... Sub guide shaft 17 ... Screw shaft 18 ... ..Geartrain unit 19 ... Thread motor 2 0 ... Nut 21 ... Post pin 22 ... Spacer 23 ... Buffer member 24 ... Disk support arm 25 ・ ・ ・ ・ ・ ・ ・ ・ Holder 26 ・ ・ ・ ・ ・ ・ ・ ・ Support plate 27 ・ ・ ・ ・ ・ ・ ・ ・ Pivot pin 28 ・ ・ ・ ・ ・ ・ ・ ・ First link arm 29 ... Tension coil spring 30 ... Second link arm 32 ... Lever arm 33 ... Lock lever 34 ...・ ・ ・ ・ Torsion coil spring 35 ・ ・ ・ ・ ・ ・ ・ ・ Limit switch 36 ・ ・ ・ ・ ・ ・ ・ ・ Starting pin 37 ・ ・ ・ ・ ・ ・ ・ ・ Loading motor 38 ・ ・ ・ ・ ・ ・ ・ ・Worm gear 39 ・ 40 ・ 41 ・ ・ Double gear 42 ・ ・ ・ ・ ・ ・ ・ ・ Gear base 43 ・ ・ ・ ・ ・ ・ ・ ・Ruder 44 ... Pivot pin 45 ... Compression coil spring 46 ... Limit switch 47 ... Slider member 48 ...・ ・ ・ ・ ・ Pivot pin 49 ・ ・ ・ ・ ・ ・ ・ ・ Tensile coil spring 50 ・ ・ ・ ・ ・ ・ ・ ・ Loading slider 51 ・ ・ ・ ・ ・ ・ ・ ・ Lever arm 52 ・ ・ ・ ・ ・ ・ ・ ・Gear member 53 ········ Pressing pin 54 ·············································································・ ・ ・ ・ Attraction arm 58 ・ ・ ・ ・ ・ ・ ・ ・ Following pin 59 ・ ・ ・ ・ ・ ・ ・ ・ Pivoting pin 60 ・ ・ ・ ・ ・ ・ ・ ・ Pivoting pin 61 ・ ・ ・ ・ ・ ・ ・ ・Roller 62 ... Slide member 63 ... Link member 64 ... Release pin 7 ... Adjustment screw 71 ... Coil spring 80 ... Flexible printed circuit board 80c ... Window hole Q ... Protrusion

Claims (4)

A disk drive mechanism comprising a turntable with a clamp head and a spindle motor, and an elevating frame provided with an optical pickup unit that advances and retreats in the diameter direction of the disk with respect to the clamp head are arranged in a direction along a diagonal line inside the apparatus; The disk device is configured such that the center end of the disk can be clamped or released by the clamp head by swinging the front end in the vertical direction with the base end of the lifting frame as a rotation axis.
When the end of the sub-guide shaft that supports the carrier block incorporating the optical pickup unit is cushioned and supported, and a protrusion is provided on a part of the end facing the bottom chassis of the carrier block, and the carrier block is lowered 2. A disk device according to claim 1, wherein the protrusion abuts against the bottom chassis so that the flexible printed circuit board laid on the back surface of the carrier block is not pressed against the bottom chassis.   2. The disk apparatus according to claim 1, wherein the protrusion is formed at a support position of the carrier block by the sub guide shaft.   2. The disk device according to claim 1, wherein a window hole is formed in a flexible printed circuit board laid on the back surface of the carrier block.   2. The disk device according to claim 1, wherein the protrusion is formed at a position away from a flexible printed circuit board laid on the back surface of the carrier block.

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