JP3802890B2 - Changer type disk unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a changer-type disc capable of reproducing and / or recording information on a disc such as a CD (compact disc) or a DVD (digital versatile disc) and storing a plurality of discs in an apparatus main body. More particularly, the present invention relates to a slot-in type changer disk device that automatically conveys a disk inserted from an insertion slot to a predetermined position.
[0002]
[Prior art]
In a vehicle-mounted changer disk device, a slot-in method in which a disk inserted from an insertion port is automatically transported to a predetermined position by a disk transport mechanism is often used. In such a changer disk device, a disk is rotated. A drive unit that drives and reproduces and / or records information by an optical pickup and the like, and a disk storage unit that can store a plurality of disks arranged in the thickness direction are provided. The drive unit moves forward and backward between a drive position and a retracted position by a drive drive mechanism, and at this drive position, one of a plurality of disks held in the disk storage portion is selectively pulled out. The selected disk is rotationally driven by the drive unit.
[0003]
Conventionally, in such a changer-type disk device, the drive unit is switched between an unlocked state in which the drive unit is elastically supported with respect to the housing via a damper member and a locked state in which the drive unit is fixedly supported with respect to the housing. A drive lock mechanism is provided, and this drive lock mechanism operates so that the drive unit is unlocked during a play operation for reproducing a disc, and the drive unit is locked during other disk transport operations. Is known (see, for example, Patent Document 1). Such a drive lock mechanism includes a pair of slide cam plates provided with a lock hole, and an operation plate for moving both slide cam plates back and forth along the inner surface of the housing. The lock hole is larger than the cam hole. It has a diameter part. In addition, the drive drive mechanism includes a drive chassis supported by a housing via a damper member, and a plurality of lock pins protruding from the side surfaces of the drive chassis are inserted into lock holes of both slide cam plates. Yes.
[0004]
In a changer-type disc device equipped with such a drive lock mechanism, when the lock pin is positioned within the large diameter portion of the lock hole during play operation, the drive unit is elastically supported by the housing via the drive chassis. Since it is in a locked state (anti-vibration mode), it is possible to prevent sound skipping caused by external vibration. On the other hand, when the disc is transported, the drive unit is fixedly supported by the housing via the drive chassis when both slide cam plates are moved forward and backward to move the lock pin to the cam hole of the lock hole. Therefore, the disk can be reliably conveyed to a predetermined position.
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 10-3734 (page 3-4, FIG. 1)
[0006]
[Problems to be solved by the invention]
By the way, when shipping and transporting this type of changer-type disk device in the product state, it is predicted that a large impact will be applied to the product due to dropping during transport, etc., so the drive unit is fixedly supported to the housing. However, when the drive unit is simply locked by the operation of the drive lock mechanism, the lock pin and the cam hole are easily deformed by the impact force when a large impact is applied to the product.
[0007]
Conventionally, as a method to absorb such drop impact during transportation, the drive unit is unlocked in the final assembly process of the changer-type disk device, and in this state, the protection is inserted into the housing from the top surface. A technique is known in which one end of the bracket is abutted against the drive unit, and the other end of the protective bracket protruding from the top surface of the housing is covered with a cushioning material. If the unlocked drive unit is shipped and transported with the protective bracket temporarily secured, the free movement of the drive unit during product transportation is regulated by the protective bracket, and the product will fall into the product due to dropping during transportation. Even if a large impact is applied, the impact force is absorbed by the cushioning material, and deformation of the lock pin and the cam hole is prevented. The protective bracket and the cushioning material are removed from the housing at the carry-in destination, and the changer-type disk device is assembled to the instrument panel of the automobile in this state.
[0008]
However, since the above-described conventional technology uses a protection bracket that is essentially unnecessary as a product, there is a problem in that the total cost of the changer-type disk device increases due to the protection bracket, and the final assembly process of the changer-type disk device Since the protective bracket is attached to the housing from the outside, it is necessary to secure the mounting space for the protective bracket in the housing, and there is a degree of design freedom including the layout of the mechanism arranged in the housing. There was a problem of being constrained.
[0009]
The present invention has been made in view of the actual situation of the prior art, and an object of the present invention is to provide a changer type disk device capable of reliably absorbing an impact caused by a drop or the like during product transportation with a simple configuration. There is to do.
[0010]
[Means for Solving the Problems]
In the present invention, when the drive drive mechanism is moved to a retracted position where the drive unit is not driven by any disk, the drive unit is brought into a locked state in which the drive unit is fixedly supported with respect to the housing by the operation of the drive lock mechanism. The engaging portion provided on the drive unit is engaged with the wall portion of the casing in an uneven manner. When such an engaging portion is provided in the drive unit, when the changer-type disk device is shipped and transported as a finished product, the drive unit is moved to the retracted position so that the engaging portion is engaged with the wall portion. For example, even if an impact such as a drop is applied to the product during transportation, the impact is reliably absorbed by the concave and convex engagement between the engaging part and the wall part, so deformation of the lock pin and lock hole with poor mechanical strength Can be prevented.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The changer-type disc device of the present invention includes a housing provided with an insertion port for inserting and ejecting a disc, a disc storage portion provided in the housing and holding a plurality of discs arranged in the thickness direction, A disk transport mechanism for transporting a disk between the insertion slot and the disk storage section, and a drive for reproducing and / or recording information on a selected disk selected from any of the disks in the disk storage section A drive drive mechanism for moving the drive unit back and forth between a drive position for driving the selected disk and a retracted position for driving none of the disks, and the drive unit with respect to the housing via a damper member Drive lock that switches between an unlocked state that is elastically supported and a locked state that is fixedly supported with respect to the housing An engaging portion is provided at a portion facing the wall portion of the housing of the drive unit, and when the drive drive mechanism moves the drive unit to the retracted position, the engaging portion and the wall The drive unit is held in a locked state by the operation of the drive lock mechanism.
[0012]
In the changer-type disc device configured as described above, when the product is shipped and transported as a finished product, the drive unit is fixedly supported with respect to the housing by the drive lock mechanism and is driven by the drive drive mechanism. By moving the unit to the retracted position and engaging the engaging part with the wall part, even if an impact such as a drop is applied to the product during transport, the impact is applied to the uneven part between the engaging part and the wall part. Therefore, the lock pin and the lock hole with poor mechanical strength can be prevented from being deformed. In addition, the engaging portion is separated from the wall as the drive unit moves from the retracted position to the drive position, and the drive unit is elastically supported by the drive lock mechanism with respect to the housing at the drive position. Therefore, it is possible to reliably absorb the impact during the product conveyance only by providing the engaging unit in the drive unit at the assembly stage, and therefore it is possible to simplify the assembly process and reduce the manufacturing cost. .
[0013]
In the above configuration, the engaging portion and the wall portion only need to be unevenly engaged at least at one position at the retracted position of the drive unit, but in order to increase the mechanical strength against impact, a plurality of engaging portions and wall portions are provided. It is also possible to engage with the concave and convex. Further, when the engaging portion and the wall portion are engaged with the concave and convex portions at the retracted position of the driving unit, it is possible to engage the concave portion (engaging portion) provided in the driving unit and the convex portion provided on the wall portion. However, it is preferable that the engaging portion is composed of a pin member implanted in the drive unit, and the pin member is inserted into an engagement hole provided in the wall portion at the retracted position of the drive unit. At this time, if a bush made of an elastic material is attached to the peripheral edge of the engagement hole and the pin member is inserted into the engagement hole via this bush, the changer-type disk device is externally connected at the retracted position of the drive unit. When vibration is applied, the pin member does not directly contact the peripheral edge of the engagement hole, so that rattle noise generated at the position can be suppressed.
[0014]
Further, in the above configuration, the engagement portion is an engagement member that is elastically held by the drive unit via a spring member, and the engagement member is provided on the wall portion at the retracted position of the drive unit. If it is configured to engage with the hole, the engagement member is pressed against the peripheral edge of the engagement hole by the spring member at the retracted position of the drive unit, so that rattle noise generated at the position can be suppressed. it can.
[0015]
【Example】
The embodiment will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing the internal mechanism of the changer-type disk device, FIG. 2 is a perspective view of the disk device, and FIG. FIG. 4 is a perspective view showing the internal mechanism of the first chassis, FIG. 5 is a perspective view showing the main part of the disk transport mechanism, and FIG. 6 is a standby state before inserting the disk. FIG. 7 is an explanatory diagram showing a disc insertion start state, FIG. 8 is an explanatory diagram showing a disc loading start state, FIG. 9 is an explanatory diagram showing a disc storage state, and FIG. 10 is a disc pull-out state. FIG. 11 is an explanatory view showing the playing state of the disc, FIG. 12 is a side view of the feed screw member, FIG. 13 is a perspective view of the stocker, FIG. 14 is a perspective view of the first pressing member, and FIG. Illustration of restriction plate 16 is a plan view showing the retracted position of the drive unit, FIG. 17 is a plan view showing the drive position of the drive unit, FIG. 18 is an explanatory view showing a state where the first pressing member and the disk are released from pressure contact, and FIG. FIG. 20 is a perspective view showing the internal mechanism of the second chassis, FIG. 21 is a plan view showing the internal mechanism of the second chassis, and FIG. 22 is the second chassis. FIG. 23 is an explanatory view showing a state where the second pressing member and the disk are released from pressure contact, and FIG. 24 is an explanatory view showing a state where the second pressing member is pressed against the disk. FIG. 25 is an operation explanatory view of the drive drive mechanism, FIG. 26 is an explanatory view showing a clamp release state of the drive unit, and FIG. 27 is an explanatory view showing a clamp state of the drive unit.
[0016]
The changer type disk device according to the present embodiment can reproduce a disk D (small diameter disk) having an outer dimension of 8 cm and a disk D (large diameter disk) having a diameter of 8 cm, and accommodates a plurality of large diameter disks D. And a slot-in type disk reproducing apparatus capable of selectively reproducing one of the disks D.
[0017]
As shown in FIGS. 1 to 3, the changer-type disk device includes a box-shaped housing 1 and a nose member 2 disposed on the front surface of the housing 1. The insertion slot 2a is established. The nose member 2 is fixed to a front plate (wall portion) 70 made of a metal plate, and the front plate 70 has an insertion port 70a and an engagement hole 70b. The insertion port 70a communicates with the insertion port 2a of the nose member 2, and the engagement hole 70b is located below the insertion port 70a. The insertion port 2a of the nose member 2 can be opened and closed by a door member (not shown), and the disk D is inserted into and discharged from the housing 1 through the insertion ports 2a and 70a. The housing 1 is composed of a first chassis 3 and a second chassis 4, and the first and second chassis 3 and 4 are integrated using a plurality of screws. The upper first chassis 3 is provided with a disk transport mechanism 5 and a disk storage portion 6 disposed on the rear side of the housing 1, and the lower second chassis 4 has a drive unit 7 and a drive drive mechanism 8. As will be described later, the drive unit 7 is moved forward and backward between the drive position inside the housing 1 and the retracted position near the insertion opening 70a of the front plate 70 by the drive drive mechanism 8. Yes.
[0018]
The first chassis 3 is shown upside down in FIGS. 4 and 5, but as shown in these drawings, the disk transport mechanism 5 is slidable in a direction perpendicular to the transport direction of the disk D. The first and second guide portions 9 and 10 are provided, and the distance between the guide portions 9 and 10 is configured by a first motor (not shown), the first and second slide plates 11 and 12, and the like. It can be changed by a guide body interval changing mechanism (variable power unit).
[0019]
The first guide portion 9 includes a plurality of conveying pulleys 13 having grooves into which the peripheral edge of the disk D is inserted, and a plurality of driving gears 14 for applying a driving force to the conveying pulley 13. 14 is rotated by using a second motor 71 (see FIG. 5) as a drive source. The transport pulley 13 and the drive gear 14 are arranged in a line and are pivotally supported by the first slide plate 11, but the last transport pulley (reference numeral 13a) is located at the innermost position in the insertion direction of the disk D. Only the support shaft of (1) is rotatable with respect to the first slide plate 11 around the rotation shaft of the drive gear 14 meshing with the transport pulley 13a. In addition, the 1st receiving part 11a is formed in the 1st slide board 11, and this 1st receiving part 11a is substantially equivalent to the lower end (illustrated upper end in FIG. 4 and FIG. 5) of each conveyance pulley 13. As shown in FIG. It is set to the height position.
[0020]
Further, the first stage transport pulley (reference numeral 13b) located closest to the insertion direction of the disk D is pivotally supported by a rotating arm 72, and the rotating arm 72 meshes with the transport pulley 13b. The drive gear 14 is rotatable with respect to the first slide plate 11 around the rotation axis. The rotating arm 72 is biased in the clockwise direction of FIG. 5 by the spring force of the spring 73, and can be brought into contact with and separated from a stopper (not shown) provided on the first slide plate 11. . A cylindrical detection pin 75 is planted at the tip of the rotating arm 72, and the detection pin 75 has a height position substantially equal to the lower end of each conveying pulley 13 (the upper end shown in FIGS. 4 and 5). Is set to The detection pin 75 can be brought into contact with the peripheral portion of the disk D inserted into the housing 1, and when the detection pin 75 is pressed by the insertion force of the disk D, the rotating arm 72 is a spring of the spring 73. It rotates counterclockwise in FIG. 5 against the force, and the first switch 76 is turned on by the rotation of the rotating arm 72. Here, as shown in FIG. 6, the rotation center O of the rotation arm 72 in the standby state before the disk insertion. ₁ And the rotation center O of the transport pulley 13b ₂ Assuming that a straight line connecting the two is P, the detection pin 75 is disposed outside the straight line P. As a result, when the detection pin 75 is pressed against the peripheral edge of the disk D inserted into the housing 1, as shown in FIG. 7, the rotating arm 72 is rotated counterclockwise with a light force. It can be reliably rotated in the direction (arrow α direction).
[0021]
On the other hand, the second guide portion 10 has a long conveyance guide body 15, and the conveyance guide body 15 is formed with a guide groove 15 b extending linearly along the conveyance direction of the disk D. The conveyance guide body 15 is fixed to the second slide plate 12, and a second surface set on the lower surface (the upper surface shown in FIGS. 4 and 5) at a height position substantially equal to the first receiving portion 11 a. The receiving portion 15a is formed. Further, a determination member 77 is rotatably supported by the second slide plate 12, and a closing arm 77a formed at the front end portion of the determination member 77 can enter and exit the guide groove 15b. Yes. The determination member 77 rotates when the peripheral edge of the disk D inserted into the housing 1 comes into contact with the closing arm 77a, and the rotation of the determination member 77 turns on a second switch (not shown). It has become. An output signal of the second switch and the first switch 76 described above is taken into a control unit (not shown), and the control unit is configured to output a first motor, which is a drive source of the guide body interval changing mechanism, based on these output signals. It controls the rotation of the second motor 71 that is the drive source for the group of conveying pulleys 13. As described above, the first guide portion 9 and the second guide portion 10, the group of transport pulleys 13 provided in the guide portions 9 and 10, the drive gear 14, the transport guide body 15, and the first guide portion 9, The disc D is transported between the insertion openings 2a, 70a and the disc storage portion 6 by the second slide plates 11, 12, etc., and selected from the plurality of discs D held in the disc storage portion 6. The disc transport mechanism 5 is configured to draw the disc D to the play position.
[0022]
As shown in FIGS. 7 to 11, these first and second guide portions 9 and 10 hold the disk D in a direction perpendicular to the plate thickness direction between the transport pulley 13 group and the transport guide body 15. By applying a rotational driving force transmitted from the second motor 71 to the group of conveying pulleys 13 through the drive gear 14 to the disk D, the disk D is inserted between the insertion openings 2a and 70a and the play position or the play position. And the disc storage unit 6. Further, the first pulley and the second slide plate 11 and 12 are slid by using the first motor as a drive source, so that the transport pulley 13 group and the transport guide body 15 can be moved close to and away from each other. However, even large diameter disks D can be transported. Further, since the first and second receiving portions 11a and 15a are set at a height position substantially equal to the lower end of the transport pulley 13 group, as is apparent from FIG. 8, when the disk D is inserted or ejected. The disc D can be prevented from dropping unintentionally from between the transport pulley 13 group and the transport guide body 15.
[0023]
Returning to FIG. 4, the above-described disk storage 6 will be described in detail. A ring-shaped large-diameter gear 16 is disposed on the top surface (bottom surface in FIG. 4) of the first chassis 3, and an upper regulating member 17 is fixed at the center position of the large-diameter gear 16. The large-diameter gear 16 is rotated by using the second motor 71 as a drive source, and the rotation amount and the rotation direction of the large-diameter gear 16 are detected by a detection sensor 18 including an encoder that rotates in mesh with the large-diameter gear 16. (See FIG. 16). Four feed screw members 19 are disposed outside the large-diameter gear 16. As shown in FIG. 12, a small gear 20 is fixed to each feed screw member 19, and these small gears 20 mesh with the large-diameter gear 16. As a result, when the large-diameter gear 16 rotates in either the forward or reverse direction, all four feed screw members 19 are synchronously rotated in the same direction. Each feed screw member 19 is provided with a spiral groove 19a having an unequal pitch, and the spiral groove 19a has an equal pitch at the upper and lower ends and a narrow pitch width. The width is set wide. The large-diameter gear 16, the feed screw member 19, and the small gear 20 constitute stocker driving means for moving up and down a stocker 21 described later in the axial direction of the feed screw member 19.
[0024]
Each feed screw member 19 has a plurality (six in this embodiment) of holes 22 of stockers 21 inserted therein. As shown in FIG. 13, these stockers 21 have a generally arcuate shape as a whole. The stocker 21 is provided with four holes 22 having a convex portion 21 a therein, and the convex portion 21 a is slidably engaged with the spiral groove 19 a of the feed screw member 19. As a result, when the feed screw members 19 are synchronously rotated by the large diameter gear 16, the stocker 21 moves up and down in the axial direction of the feed screw member 19. The stocker driving means and the stocker 21 constitute the disk storage unit 6 described above, and a plurality of upper support pieces 23a and lower support pieces 23b are directed toward the center on the semicircular arc-shaped inner peripheral surface of each stocker 21. Projecting. The upper support piece 23a and the lower support piece 23b are displaced in the thickness direction of the stocker 21, and the space between the upper support piece 23a and the lower support piece 23b functions as a holding groove for holding the disk D. Then, almost half of the outer periphery of the disk D is held between the upper support piece 23a and the lower support piece 23b.
[0025]
Returning again to FIG. 4, a buffering prevention member 24 and a first pressing member 25 are disposed close to the top surface of the first chassis 3, and the buffering prevention member 24 meshes with the large-diameter gear 16. ing. A protrusion 24 a is formed on the buffer preventing member 24, and the protrusion 24 a rotates slightly above the transport path of the disk D in conjunction with the rotation of the large-diameter gear 16. As shown in FIG. 11, when the desired disk D is pulled out to the play position, the projecting piece 24a is stopped above the disk D, so that the disk D during the play operation and the stocker 21 at the position above the disk D. The held disk D is prevented from colliding.
[0026]
As shown in FIG. 14, the first pressing member 25 includes a support shaft portion 25 a that is supported by the first chassis 3 and a flat portion that extends from the support shaft portion 25 a along the top surface of the first chassis 3. 25b, a pressing portion 25c extending from one side surface of the flat portion 25b in the direction opposite to the support shaft portion 25a, and a drive portion 25d extending from the other side surface of the flat portion 25b in the direction opposite to the support shaft portion 25a. Each of these parts is integrally formed of a flexible synthetic resin. A plate spring 26 is incorporated in the thin pressing portion 25c, and sufficient elastic force is applied to the pressing portion 25c by adding the elastic force of the leaf spring 26 to the elastic force caused by the bending of the pressing portion 25c itself. It has become so. Further, a restriction plate 27 made of a relatively hard rubber material or the like is fixed to the free end of the pressing portion 25c by using a double-sided adhesive tape or the like. As shown in FIG. The taper groove 27a is formed. The interval between the tapered grooves 27a is set to be equal to the equal pitch portions at the upper and lower end portions of the spiral groove 19a described above, and the number thereof is one less than that of the stocker 21 (five in the embodiment). . The width l of the flat surface 27b at the bottom of the tapered groove 27a is set slightly smaller than the thickness of the disk D.
[0027]
The first pressing member 25 configured in this manner is engaged with and supported by the constituent members of the drive drive mechanism 8 when the drive drive mechanism 8 moves the drive unit 7 back and forth between the retracted position and the drive position. It is rotated around the shaft portion 25a. This rotating operation will be described later. As shown in FIG. 16, when the drive unit 7 is in the retracted position where no disk is driven, the first pressing member 25 is slightly rotated clockwise in FIG. The regulating plate 27 is separated from the outer peripheral edge of the disk D held by the stocker 21 (see FIG. 18). On the other hand, as shown in FIG. 17, when the drive unit 7 is moved to the drive position, the first pressing member 25 is slightly rotated counterclockwise in FIG. Is in pressure contact with the outer peripheral edge of the disk D (see FIG. 19). Thereby, when the desired selected disk D is pulled out to the play position, each standby disk D located above the selected disk D in the thickness direction of the disk D is pressed against the pressing portion 25c of the first pressing member 25 and the leaf spring. In response to the elastic force of 26, it is urged toward the stocker 21 from the outside in the radial direction, so that rattle noise generated by the vibration of the disk D is reduced.
[0028]
As shown in FIG. 20, the front plate 70 is fixed to the front surface of the second chassis 4 using means such as screwing, and the nose member 2 is fixed to the front plate 70. . As shown in FIGS. 20 to 22, a drive unit 7 and a drive drive mechanism 8 are mounted inside the second chassis 4, and the drive drive mechanism 8 attaches the drive unit 7 to the front plate 70 and the disk storage portion. 6 is moved forward and backward to a drive position and a retracted position, and a clamping operation of the disk D pulled out to the play position is performed. The drive drive mechanism 8 includes a drive chassis 30, and the four corners of the drive chassis 30 are elastically supported by the second chassis 4 via damper members 31 and coil springs (not shown). However, when the lock pins 32 protrude from four side portions of the drive chassis 30 and are locked to the second chassis 4 by a pair of slide cam plates 33 and 34 described later, the drive chassis 30 is fixedly supported with respect to the second chassis 4.
[0029]
As shown in FIGS. 23 and 24, an operating arm 35 and a rotating arm 36 are disposed on the bottom surface of the second chassis 4, and the operating arm 35 and the rotating arm 36 are rotated by a toothless gear 37. Be operated. A relay gear 38 is meshed with the toothless gear 37, and this relay gear 38 rotates using a third motor 78 (see FIG. 5) provided in the first chassis 3 as a drive source. A lower restricting member 39 is erected on the bottom surface of the second chassis 4, and the lower restricting member 39 and the upper restricting member 17 provided on the first chassis 3 are coaxially arranged in the vertical direction. Yes. The lower restricting member 39 has a restricting arm 39 a at the upper end, and the restricting arm 39 a is rotated by a switching member (not shown) housed in the lower restricting member 39. A screw shaft (not shown) that moves the switching member up and down is housed inside the lower regulating member 39, and a fan-shaped tooth portion 35a formed at the tip of the operating arm 35 meshes with the screw shaft. ing. As a result, when the operating arm 35 rotates, the restriction arm 39a rotates at the upper end of the lower restriction member 39, and when the drive unit 7 is in the retracted position, the restriction arm 39a stands up and contacts the upper restriction member 17. The center holes of all the disks D held by each stocker 21 are regulated in the horizontal direction (front-rear direction) by the upper regulating member 17 and the lower regulating member 39. On the other hand, when the drive unit 7 is moved to the drive position, the restriction arm 39a is tilted down and is held by the stocker 21 in order to secure a transport path for the disk D between the upper restriction member 17 and the lower restriction member 39. The desired selected disk D can be pulled out to the play position, a new disk D can be inserted into the empty stocker 21, or the disk D can be ejected from the stocker 21 toward the insertion slot 2a.
[0030]
A second pressing member 40 is rotatably disposed on the bottom surface of the second chassis 4, and the second pressing member 40 is a support shaft portion that is pivotally supported by the second chassis 4. 40a, a flat portion 40b extending along the bottom surface of the second chassis 4, a pressing portion 40c extending upright from one side surface of the flat portion 40b, and a lower end of the free end of the pressing portion 40c. And a sliding piece 40e that slides on the bottom surface of the chassis 4 and these parts are integrally formed of a flexible synthetic resin. A coil spring 41 is stretched between the flat portion 40b and the second chassis 4, and the second pressing member 40 is urged to rotate clockwise in FIGS. 23 and 24 by the coil spring 41. Yes. In addition, a restriction plate 42 is fixed to the free end of the pressing portion 40c using a double-sided adhesive tape or the like, and detailed description thereof is omitted, but the restriction plate 42 is attached to the pressing portion 25c of the first pressing member 25. The configuration is the same as that of the fixed restriction plate 27. Furthermore, a through hole 40d is formed in the flat portion 40b, and a protrusion 36a formed on the rotating arm 36 projects into the through hole 40d and is in sliding contact with the inner peripheral edge (engagement portion) of the through hole 40d. Accordingly, the second pressing member 40 is rotated in conjunction with the rotation of the rotating arm 36 by moving.
[0031]
The rotating arm 36 is rotatable about a support shaft 43 projecting from the second chassis 4, and a slide cam plate 34 that is supported by the second chassis 4 so as to move forward and backward is connected to one end thereof. The other end engages with a cam groove (not shown) formed on the back surface of the toothless gear 37. Further, another rotating arm 44 is engaged with the cam groove of the toothless gear 37, and a slide cam plate 33 supported on the rotating arm 44 so as to be able to move forward and backward is also provided. It is connected. As will be described later, the drive unit 7 is moved back and forth between the drive position and the retracted position by the drive force from the toothless gear 37, and the movement of the drive unit 7 and the rotation of the rotary arm 36 are performed. Timing is taken by the toothless gear 37. The rotating arms 36 and 44 and the toothless gear 37 constitute a connecting mechanism for moving the slide cam plates 33 and 34 back and forth in synchronization.
[0032]
FIG. 23 shows a state in which the drive unit 7 is in the retracted position. In this case, since the protrusion 36a of the rotating arm 36 is in contact with the inner peripheral edge of the through hole 40d below the figure, the second pressing member 40 is shown. Cannot be rotated, and the regulating plate 42 fixed to the free end of the pressing portion 40 c is separated from the outer peripheral edge of the disk D held by the stocker 21. On the other hand, FIG. 24 shows a state in which the drive unit 7 has moved to the drive position. In this case, since the protrusion 36a moves in the through hole 40d by the rotation of the rotation arm 36, the second pressing member 40 is a coil. The spring 41 is slightly rotated in the clockwise direction, and the regulating plate 42 is in pressure contact with the outer peripheral edge of the disk D at a position below the transport path of the disk D (a position below the selected disk D at the play position). As a result, when the desired selected disk D is pulled out to the play position, the disk D below the selected disk D has a spring force due to the bending of the pressing portion 40c of the second pressing member 40 and the coil spring 41. The rattle noise generated by the vibration of each standby disk D held by the stocker 21 is reduced by being urged toward the stocker 21 from the outside in the radial direction.
[0033]
Therefore, when the desired selected disk D is pulled out to the play position, the position of all the standby disks D left in the stocker 21 is regulated by both the first pressing member 25 and the second pressing member 40 described above. Thus, the rattle noise generated by the vibration of the standby disk D can be reliably reduced. In the above embodiment, the pressing portion 40c of the second pressing member 40 is pressed against the standby disk D mainly by the elastic force of the coil spring 41, but the through hole 40d of the second pressing member 40 is The pressing portion 40c may be further pressed against the outer peripheral edge of the standby disk D by pressing the pressed piece 40f formed on the inner peripheral edge with the protrusion 36a.
[0034]
Returning to FIGS. 20 to 22, the drive drive mechanism 8 described above will be described in more detail. Inside the drive chassis 30, a first idler gear 45 that meshes with the tooth portion 37 a of the toothless gear 37 and a driving force is transmitted, and a gear with an upstream cam that always meshes with the first idler gear 45. 46, a second idler gear 47 that always meshes with the upstream cam gear 46, a third idler gear 48 that always meshes with the second idler gear 47, and a third idler gear 48 that always meshes with the third idler gear 48. The meshed downstream cam gear 49 is pivotally supported, and the upstream arm 50 that engages the cam groove 46a of the upstream cam gear 46 drives one end of the drive unit 7 and has the downstream cam. The downstream arm 51 that engages with the cam groove 49 a of the gear 49 drives the other end of the drive unit 7. Drive pins 50a and 51a are projected from the distal ends of the arms 50 and 51. One drive pin 50a includes an arcuate guide hole 30a provided on one side of the drive chassis 30 and a drive unit. 7 is inserted into a lateral hole 7a provided on one side of the body. Similarly, the other drive pin 51 a is inserted into an arcuate guide hole 30 b provided on the other side of the drive chassis 30 and a horizontal hole 7 b provided on the other side of the drive unit 7.
[0035]
In the drive drive mechanism 8, when the first idler gear 45 is engaged with the tooth portion 37a of the toothless gear 37, the rotational force of the toothless gear 37 is transmitted to the arms 50 and 51 via the gear groups. Therefore, the drive unit 7 can be moved forward and backward on the drive chassis 30. At this time, the rotational force of the toothless gear 37 is not transmitted to the rotating arm 36 and the rotating arm 44 due to the cam groove shape of the toothless gear 37. The rotating arm 36 and the rotating arm 44 are not shown in FIG. Stops in the posture shown. On the other hand, when the first idler gear 45 is not meshed with the tooth portion 37a of the toothless gear 37, the drive unit 7 does not move forward and backward and remains stopped at the driving position. Is transmitted to the rotating arm 36 and the rotating arm 44 based on the cam groove shape, and the rotating arm 36 and the rotating arm 44 are rotated so that a clamping operation and an anti-vibration mode described later are performed. Switching operation is performed.
[0036]
As shown in FIG. 25, an operation plate 52 is rotatably supported inside one side surface of the second chassis 4, and this operation plate 52 is rotated by the above-described forward and backward movement of the slide cam plate 34. . Specifically, the protrusion 34c provided at the lower end of the slide cam plate 34 moves while sliding on the lower end edge of the operating plate 52, whereby the free end side of the operating plate 52 rotates in the vertical direction in the figure. The slide cam plate 34 is provided with a pair of front and rear lock holes 53 having a cam hole 53 a and a large diameter portion 53 b, and each lock pin 32 is provided on one side of the second chassis 4 through the lock hole 53. The escape hole 4a is reached. Although not shown, the slide cam plate 33 disposed on the other side surface of the second chassis 4 has the same configuration.
[0037]
25 (a) to 25 (d) sequentially show the state in which the drive unit 7 moves from the drive position to the retracted position. As shown in FIG. 25 (a), when the drive unit 7 is in the drive position, the slide is performed. The operating plate 52 is rotated downward in accordance with the position of the projection 34c of the cam plate 34, and the lock pin 32 passes through the large diameter portion 53b of the lock hole 53 and reaches the escape hole 4a. The chassis 30 is elastically supported by the second chassis 4 via the damper member 31 and the coil spring, and the selected disk D is played in this state. Then, as the drive unit 7 moves from the drive position to the retracted position, the slide cam plate 34 moves to the front (left side in the figure) of the second chassis 4 as shown in FIGS. In addition, the operating plate 52 is pivoted upward while sliding with the projection 34 c, the groove 52 a formed on the free end side of the operating plate 52 is fitted into the lock pin 32, and the lock pin 32 is inserted into the lock hole 53. In order to enter the cam hole 53a from the large-diameter portion 53b, the drive chassis 30 is fixedly supported in the vertical direction and the front-back direction with respect to the second chassis 4. As described above, the state in which the drive unit 7 is elastically supported in the housing 1 via the drive chassis 30 by the pair of slide cam plates 33 and 34, the operation plate 52, and the coupling mechanism described above, and the inside of the housing 1 The drive lock mechanism is configured to switch to a state where it is fixedly supported.
[0038]
A projecting piece 34a is formed at the upper end of the slide cam plate 34, and a driving piece 34b is formed at the inner surface on the back side, and the projecting piece 34a is opposed to the driving section 25d of the first pressing member 25 described above. (See FIGS. 18 and 19). Further, a cam plate 54 and a lock plate 55 are sequentially laminated on the inner side surface of the slide cam plate 34, and the cam plate 54 and the lock plate 55 are operated in conjunction with the forward and backward movement of the slide cam plate 34. It has become. A coil spring 56 is stretched between the cam plate 54 and the slide cam plate 34, and the cam plate 54 is urged forward (to the left in the drawing) of the slide cam plate 34 by the coil spring 56. The cam plate 54 is formed with a guide hole 54a that engages with a pin 57 planted on the side surface of the second chassis 4, and a driving piece 54b is bent at the lower end on the back side. The lock plate 55 is swingably supported by the cam plate 54, and a coil spring 58 is stretched between the lock plate 55 and the cam plate 54. The lock plate 55 is formed with a lock groove 55a that can be engaged with and disengaged from the pin 59 planted in the slide cam plate 34, and a cam portion 55b that can be engaged and disengaged with the pin 57 is formed at the upper end.
[0039]
Next, the configuration of the drive unit 7 will be described. As shown in FIGS. 26 and 27, the drive unit 7 has a horizontally long bracket 60 mounted on the drive chassis 30 so as to be movable in the front-rear direction, and the above-described lateral holes 7a and 7b are formed in the bracket 60. Is provided. As shown in FIGS. 20 to 22, an engagement pin 79 is planted on the front side of the bracket 60, and a tip end portion of the engagement pin 79 is tapered and chamfered. The engagement pin 79 moves in the vicinity of the toothless gear 37 and the relay gear 38 as the drive unit 7 moves forward and backward. When the drive unit 7 moves to the retracted position and faces the front plate 70, the engagement pin 79 79 enters the engagement hole 70 b and locks the drive unit 7 to the front plate 70. In the product state in which the assembly of the changer disk device is completed, the drive unit 7 has been moved to the retracted position facing the front plate 70, and as described above, the drive chassis 30 is moved to the second chassis 4 at this retracted position. On the other hand, the drive unit 7 is fixedly supported by the second chassis 4 via the drive chassis 30 because the drive unit 7 is fixedly supported in the vertical direction and the front-back direction. At this time, since the engaging pin 79 enters the engaging hole 70b, the position of the driving unit 7 is restricted in the vertical direction and the horizontal direction with respect to the front plate 70. Therefore, the driving unit 7 is locked by the drive lock mechanism. In addition, the position is restricted by the concave and convex engagement between the engagement pin 79 and the engagement hole 70b. Therefore, if the changer-type disk device is transported in this state, even if an impact such as a drop is applied during the transport, the impact can be absorbed by the concave and convex engaging portions of the engaging pin 79 and the engaging hole 70b. It is possible to prevent the lock pin 32 and the lock hole 53 having poor mechanical strength from being deformed. Particularly, in the case of the present embodiment, the meshing portion between the output side gear of the third motor 78 provided in the first chassis 3 and the relay gear 38 provided in the second chassis 4, and the relay gear 38 Since the engagement pin 79 is provided at a position close to the meshing portion with the partial gear 37, tooth skipping due to the impact can also be prevented.
[0040]
A spindle motor 61 is attached to the center of the bracket 60, and a turntable 62 is fixed to the rotation shaft of the spindle motor 61. Further, an optical pickup 63 and a support plate 64 are mounted on the bracket 60, and the optical pickup 63 and the support plate 64 are disposed to face each other with a spindle motor 61 interposed therebetween. The optical pickup 63 meshes with the screw shaft 65, and the optical pickup 63 is rotated in the axial direction of the screw shaft 65 (radial direction of the disk D) by rotating the screw shaft 65 with a thread motor (not shown) as a drive source. It is to be transferred.
[0041]
The support plate 64 is formed in a U-shaped cross section, and the support plate 64 moves forward and backward inside the drive portion 25d of the first pressing member 25 described above (see FIGS. 18 and 19). A clamper 66 is rotatably supported at the top end of the support plate 64, and the disk D is chucked between the clamper 66 and the turntable 62. Four pins 64 a are implanted on both sides of the lower surface of the support plate 64, and these pins 64 a are inserted into cam holes 67 a provided in the slide plate 67 and vertical holes 60 a provided in the bracket 60. The slide plate 67 is placed on the bracket 60, and the four pins 67 b planted on both sides of the slide plate 67 are inserted into lateral holes 64 b provided in the bracket 60. The drive plate 68 is rotatably supported on the lower surface of the bracket 60, and the slide plate 67 is moved in the horizontal direction (left and right directions in FIGS. 26 and 22) on the bracket 60 by the rotation of the drive plate 68. A reversal spring 69 is latched between the slide plate 67 and the drive plate 68, and the slide plate 67 is stably held at both ends in the moving direction by the urging force of the reversal spring 69. Yes. Further, a drive pin 68 a is implanted at one end of the drive plate 68, and this drive pin 68 a protrudes in the direction of the slide cam plate 34 and the cam plate 54.
[0042]
The clamping operation of the disk D will be described with reference to FIG. 25. First, as shown in FIG. 25 (d), the slide cam plate 34 moves to the foremost side (the left side in the figure) of the second chassis 4. When the drive unit 7 is in the retracted position, the clamper 66 is in a clamp release state in which the clamper 66 is separated from the turntable 62 as shown in FIG. At this time, the lock groove 55a of the lock plate 55 is engaged with the pin 59 of the slide cam plate 34, and the drive piece 34b of the slide cam plate 34 and the drive piece 54b of the cam plate 54 are displaced in the front-rear direction and face each other. is doing. When the drive unit 7 moves from the retracted position to the drive position, the drive pin 68a of the drive plate 68 passes directly below the drive piece 54b of the cam plate 54 and faces the drive piece 34b of the slide cam plate 34. The state is maintained as it is.
[0043]
When the slide cam plate 34 is moved to the back side of the second chassis 4 by the rotation of the rotation arm 36 after the drive unit 7 is moved to the drive position, the lock pin 32 is camped as shown in FIG. Since the hole 53 a moves from the lower stage to the upper stage, the drive chassis 30 rises together with the drive unit 7. Further, when the lock groove 55 a of the lock plate 55 is engaged with the pin 59 of the slide cam plate 34, the cam plate 54 that moves to the back side together with the slide cam plate 34 is illustrated by the engagement of the guide hole 54 a and the pin 57. Since it rotates slightly clockwise and moves to the back side of the second chassis 4 while maintaining the horizontal posture, the drive piece 54b of the cam plate 54 presses the drive pin 68a of the drive plate 68 during this movement. As a result, the drive plate 68 rotates in the direction of arrow A in FIG. 26A and moves the slide plate 67 in the direction of arrow B, so that the support plate 64 moves down together with the clamper 66 as shown in FIG. The clamp 66 is brought into pressure contact with the turntable 62 via the disk D.
[0044]
When the slide cam plate 34 further moves to the back side of the second chassis 4, the upper surface of the cam portion 55b of the lock plate 55 abuts against one pin 57 and rotates downward as shown in FIG. The lock groove 55 a of the lock plate 55 comes off from the pin 59. As a result, as shown in FIG. 25A, the cam plate 54 and the lock plate 55 are moved to the left side in the figure by the elastic force of the coil spring 56, and the drive pieces 34b and 54b of the slide cam plate 34 and the cam plate 54 are It is sufficiently separated from the drive pin 68a. As described above, in this case, the drive chassis 30 on which the drive unit 7 is mounted is elastically supported by the second chassis 4, and the selected disk D is played in this state.
[0045]
Next, the operation of the changer type disk device configured as described above will be described. As described above, the changer-type disk device according to the present embodiment is a disk reproducing device that can reproduce a disk D (small diameter disk) having an outer dimension of 8 cm and a disk D (large diameter disk) having a diameter of 12 cm. Hereinafter, an operation of inserting a small-diameter or large-diameter disk D into the housing 1 and transporting it into the housing 1 by the disk transport mechanism 5 and a plurality of large-diameter disks D stored in the stocker 21 are selectively performed. The play operation to be reproduced will be described.
[0046]
In a standby state before an arbitrary disk D (small diameter disk or large diameter disk) is inserted into the housing 1, as shown in FIG. 6, the first and second guide portions 9, 10 are positioned closest to each other. The conveyance pulley 13b of the first guide portion 9 and the conveyance guide body 15 of the second guide portion 10 are opposed to each other at a smaller interval than the diameter of the small-diameter disk D. In this standby state, the second motor 71 is stopped, and the transport pulley 13 and the drive gear 14 are not rotationally driven. Therefore, noise is generated from the drive system using the second motor 71 as a drive source in the standby state. do not do.
[0047]
In this standby state, for example, when the large-diameter disc D is inserted from the insertion port 2a of the nose member 2 into the insertion port 70a of the front plate 70, both sides of the peripheral portion of the disc D are guided by the conveyance guide body 15 as shown in FIG. The groove 15b abuts on the detection pin 75 of the rotation arm 72, and the rotation arm 72 and the detection pin 75 rotate integrally in the counterclockwise direction (arrow α direction) in FIG. . In this case, the rotation center O of the rotating arm 72 ₁ And the rotation center O of the transport pulley 13b ₂ Since the detection pin 75 is arranged on the outside with respect to the straight line P connecting the two, the rotation arm 72 is moved by the light insertion force of the disk D when the detection pin 75 is pressed against the peripheral edge of the disk D. It can be reliably rotated in the direction of the arrow α. When the rotating arm 72 rotates in the direction of the arrow α in this way, the first switch 76 is turned on by the rotation, so that the control unit (not shown) performs the second operation based on the ON signal of the first switch 76. The motor 71 is started to rotate in one direction, and the second pulley 71 is used as a drive source to rotate the group of transport pulleys 13 in the clockwise direction in FIG. Therefore, when the peripheral edge of the disk D comes into contact with the first-stage transport pulley 13b, a rotational driving force in the direction in which the disk D is pulled into the housing 1 is applied to the transport pulley 13 group. Using this rotational driving force, both sides of the periphery of the disk D can be smoothly inserted between the guide groove 15b of the transport guide body 15 and the transport pulley 13 group.
[0048]
At this time, since the peripheral edge on the left side of the disk D contacts the blocking arm 77a and presses it outward, the determination member 77 rotates clockwise in FIG. 7 and turns on the second switch (not shown). Make it work. That is, when both sides of the peripheral edge of the disk D abut against the first stage transport pulley 13b of the transport pulley 13 group and the guide groove 15b of the transport guide body 15, both the first switch 76 and the second switch are turned on. In order to perform the ON operation, the control unit recognizes that the disk D has been inserted between the transport guide body 15 and the transport pulley 13b based on these ON signals, and is the first drive source of the guide body interval changing mechanism. The motor is started to rotate, and the facing distance between the first and second guide portions 9 and 10 is increased.
[0049]
At this time, if the inserted disc is the large-diameter disc D, the rotating arm 72 and the determination member 77 are discs when the facing distance between the first and second guide portions 9 and 10 is increased to a predetermined dimension. Since the first switch 76 and the second switch remain on, the control unit increases the facing distance between the first and second guide units 9 and 10. The rotation of the first motor is controlled so as to match the outer dimension of the diameter disk D. As a result, as shown in FIG. 8, both sides of the peripheral edge of the disk D are pushed between the guide grooves 15b of the transport guide body 15 and the transport pulley 13 group, so that the disk D is thereafter In response to the rotational driving force from the transport pulley 13 group, it is automatically transported to the inner part of the housing 1 while rolling along the guide groove 15 b of the transport guide body 15, and arranged on the rear side of the housing 1. Held in the stocker 21 of the disc storage unit 6. Further, when the inserted disc is the small-diameter disc D, the rotation arm 72 and the determination member 77 insert the disc D when the facing distance between the first and second guide portions 9 and 10 is increased to a predetermined dimension. Since the first switch 76 and the second switch are switched to the OFF state after returning to the previous state, the control unit adjusts the facing distance between the first and second guide units 9 and 10 to the outer dimension of the small-diameter disk D. Thus, the first motor is controlled to rotate.
[0050]
When a desired selected disk D is played from the plurality of disks D held in each stocker 21 in this way, first, the drive unit 7 is first moved to the retracted position (see FIG. 16) farthest from the stocker 21. In this state, the large-diameter gear 16 is rotated, and the stocker 21 holding the desired selected disk is raised or lowered to a height position equivalent to the conveying path of the disk D. At this time, as shown in FIG. 18, since the outer surface of the support plate 64 of the drive unit 7 is in contact with the tip of the drive portion 25d of the first pressing member 25, the first pressing member 25 is clockwise in the figure. The position of the disc D held by the stocker 21 is released, and the pressing force from the first pressing member 25 is released. Further, as shown in FIG. 23, since the rotation arm 36 restricts the rotation of the second pressing member 40, the disk D held by the stocker 21 receives the pressing force from the second pressing member 40. It becomes a released state. Therefore, all the disks D held by the stocker 21 can be raised or lowered without being obstructed by the first and second pressing members 25 and 40.
[0051]
Next, the toothless gear 37 is rotated counterclockwise in FIG. 23 using the third motor 73 as a drive source, and the first idler gear 45 or the like meshing the rotational force of the toothless gear 37 with the tooth portion 37a. By transmitting to each arm 50 and 51 via a gear group, the drive unit 7 is moved from the retracted position to the play position (see FIG. 17). Thereafter, the first motor described above is rotated, the guide body interval changing mechanism including the slide plates 11 and 12 is driven, and the first and second guide portions 9 and 10 are moved toward each other. Then, as shown in FIG. 9, a desired disk D selected between the transport pulley 13 and the transport guide body 15 is sandwiched, and in this state, the innermost transport pulley 13a is rotated, so that it is shown in FIG. Thus, the selected disc D is pulled out to a play position that can be driven by the drive unit 7. Whether or not the selected disk D has been pulled out to the play position is detected by pressing a switch (not shown) installed in the guide groove 15b of the transport guide body 15 to the outer peripheral edge of the disk D.
[0052]
When the drive unit 7 has moved to the drive position, the tooth portion 37a of the toothless gear 37 and the first idler gear 45 shift to the non-meshing state, and each rotation arm 36, As the 44 rotates, the slide cam plates 33 and 34 move from the near side to the far side on the inner side surface of the second chassis 4. Here, while the slide cam plate 34 moves from the position shown in FIG. 25 (d) to the position shown in FIG. 25 (c), the drive chassis 30 on which the drive unit 7 is mounted rises. The center hole of the selected disk D that has been drawn to the position enters the center hole, and the centering operation of the selected disk D is reliably performed. Further, since the drive piece 54 b of the cam plate 54 presses the drive pin 68 a to rotate the drive plate 68, the clamper 66 descends together with the support plate 64, and the selected disk D centered on the turntable 62 is moved by the clamper 66. A clamping operation for crimping is performed. After the selected disk D is chucked on the turntable 62, the transport pulley 13 and the transport guide body 15 are moved in the directions farthest away from each other, so that the selected disk pulled out to the play position as shown in FIG. D can rotate freely.
[0053]
When the slide cam plate 34 moves from the position shown in FIG. 25 (c) to the position shown in FIG. 25 (a), the drive chassis 30 is fixedly supported on the second chassis 4 by the drive lock mechanism described above. The lock mode is released, and the switching operation to the vibration isolation mode elastically supported by the damper member 31 or the like is performed, and the drive unit 7 mounted on the drive chassis 30 is pulled out to the play position in this vibration isolation mode. The selected disk D is reproduced. As the drive unit 7 moves from the retracted position to the drive position, the support plate 64 of the drive unit 7 moves away from the drive unit 25d of the first pressing member 25 as shown in FIG. Since the projecting piece 34a located outside presses the side edge of the first pressing member 25 as the slide cam plate 34 moves, the first pressing member 25 slightly rotates counterclockwise to restrict the plate. 27 is pressed against the outer peripheral edge of all the standby disks D located above the selected disk D drawn out to the play position. Further, as shown in FIG. 24, the second pressing member 40 receives a resilient force of the coil spring 41 and rotates slightly in the clockwise direction as the rotating arm 36 that operates the slide cam plate 34 rotates. Then, the regulating plate 42 fixed to the second pressing member 40 comes into pressure contact with the outer peripheral edges of all the standby disks D located below the selected disk D drawn out to the play position. Therefore, when the selected disk D is pulled out to the play position, all the standby disks D remaining in the stocker 21 are pressed in the radial direction (stocker 21 direction) by the first and second pressing members 25 and 40. The rattle noise generated by the vibration of the standby disk D can be reduced.
[0054]
In this embodiment, the disc storage unit 6 includes six stockers 21. For example, when the disc D held in the third-stage stocker 21 is selected and pulled to the play position, the first and second stages The positions of the two standby disks D held by the eye stocker 21 are regulated by the first pressing member 25, and the three standby disks D held by the fourth, fifth, and sixth stage stockers 21 are the second ones. The position is regulated by the pressing member 40. At this time, the regulation plate 27 of the first pressing member 25 is formed with one fewer taper grooves 27 a than the stocker 21, and the interval between the taper grooves 27 a is above and below the spiral groove 19 a of the feed screw member 19. Since it is set to be equal to the equal pitch portions at both ends and the restriction plate 42 of the second pressing member 40 is similarly configured, all the standby disks D left in the stocker 21 are positioned in the radial direction and the thickness direction. Therefore, the generation of rattle noise can be reliably reduced.
[0055]
When the selected disk D pulled out to the play position is stored in the stocker 21, first, the rotating gears 36 and 44 and the slide cam plates 33 and 34 are rotated by rotating the toothless gear 37 in the opposite direction. Is moved to the position shown in FIG. While the slide cam plate 34 moves from the position shown in FIG. 25 (a) to the position shown in FIG. 25 (d), the clamp releasing operation and the shifting operation from the vibration-proof mode to the lock mode are performed, and the conveying pulley 13 is also moved. When the conveying guide body 15 is brought close to the innermost conveying pulley 13a and the innermost conveying pulley 13a is rotated in the reverse direction, the selected disk D pulled out to the play position is returned to the empty stocker 21. When the toothless gear 37 further rotates in the opposite direction and the tooth portion 37a meshes with the first idler gear 45, the rotational force of the toothless gear 37 is transmitted to the arms 50 and 51, so that the drive unit 7 is driven. The disk D moved from the position to the retracted position, and the pressing force from the first and second pressing members 25 and 40 is released again.
[0056]
In the above-described embodiment, the case where the engagement pin 79 planted in the bracket 60 is inserted into the engagement hole 70b of the front plate 70 at the retracted position of the drive unit 7 has been described, but as shown in FIG. A rubber bush 80 having an insertion hole 80 a is attached to the peripheral edge of the engagement hole 70 b, and the engagement pin 79 is inserted into the insertion hole 80 a of the bush 80 at the retracted position of the drive unit 7. good. When the engaging pin 79 is inserted into the engaging hole 70b through the rubber bush 80 as described above, when external vibration is applied to the changer disk device at the retracted position of the drive unit 7, the engaging pin 79 is engaged. Since the pin 79 contacts the rubber bush 80 made of an elastic material and does not directly contact the peripheral edge of the engagement hole 70b, rattle noise at the position can be suppressed. Here, even when the peripheral surface of the engagement pin 79 is covered with an elastic body such as rubber, the occurrence of rattle noise can be prevented in the same manner as described above.
[0057]
Alternatively, as shown in FIG. 29, the engagement member 81 is elastically held on the bracket 60 via the spring 82, and the distal end portion of the engagement member 81 is moved by the elastic force of the spring 82 at the retracted position of the drive unit 7. You may comprise so that the peripheral part of the engagement hole 70b may be press-contacted, and also in this case, the rattle noise in the said position can be suppressed.
[0058]
In each of the above-described embodiments, the case where one engagement portion (engagement pin 79 or engagement member 81) is engaged with one engagement hole 70b at the retracted position of the drive unit 7 has been described. By providing uneven engagement between the engagement portion and the engagement hole at a plurality of locations, it is possible to increase the mechanical strength of the engagement portion and the engagement hole against an impact during product conveyance.
[0059]
Further, in each of the above embodiments, the case where the drive unit 7 slides in the front-rear direction has been described. However, the drive unit may be moved between the drive position and the retracted position by rotating the drive unit. When the apparatus is configured so that the retracted position of the drive unit is located behind the housing 1 relative to the disk storage portion 6, the rear plate or the side plate of the housing 1 is used as a wall portion, and the drive unit is engaged with the wall portion. The portions may be engaged with the projections and depressions.
[0060]
【The invention's effect】
The present invention is implemented in the form as described above, and has the following effects.
[0061]
When the drive drive mechanism is moved to the retracted position where it does not drive any disk, the drive lock mechanism is operated to lock the drive unit so that it is fixedly supported with respect to the housing. Since the engaging portion is configured to be engaged with the wall portion of the casing in an uneven manner, when the changer disk device is shipped and transported as a finished product, the drive unit is moved to the retracted position so that the engaging portion is walled. By engaging the concave and convex portions with the concave and convex portions, even if an impact such as dropping is applied to the product during transportation, the impact can be reliably absorbed by the concave and convex engagement between the engaging portion and the wall portion. It is possible to prevent the lock pin and the lock hole of the inferior drive lock mechanism from being deformed by an impact. In addition, the engaging portion is separated from the wall as the drive unit moves from the retracted position to the drive position, and the drive unit is elastically supported by the drive lock mechanism with respect to the housing at the drive position. Therefore, it is possible to reliably absorb the impact during the product conveyance only by providing the engaging unit in the drive unit at the assembly stage, and therefore it is possible to simplify the assembly process and reduce the manufacturing cost. .
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an internal mechanism of a changer-type disk device with an internal mechanism omitted.
FIG. 2 is a perspective view of the disk device.
FIG. 3 is a perspective view showing a state where a nose member and a front plate are removed from the disk device.
FIG. 4 is a perspective view showing an internal mechanism of the first chassis.
FIG. 5 is a perspective view showing a main part of a disk transport mechanism.
FIG. 6 is an explanatory diagram showing a standby state before inserting a disc.
FIG. 7 is an explanatory diagram showing a disc insertion start state.
FIG. 8 is an explanatory view showing a loading start state of a disc.
FIG. 9 is an explanatory diagram showing a storage state of a disc.
FIG. 10 is an explanatory diagram showing a state in which a disk is pulled out.
FIG. 11 is an explanatory diagram showing a play state of a disc.
FIG. 12 is a side view of a feed screw member.
FIG. 13 is a perspective view of a stocker.
FIG. 14 is a perspective view of a first pressing member.
FIG. 15 is an explanatory diagram of a restriction plate.
FIG. 16 is a plan view showing a retracted position of the drive unit.
FIG. 17 is a plan view showing a drive position of the drive unit.
FIG. 18 is an explanatory view showing a state in which the first pressing member and the disk are released from pressure contact.
FIG. 19 is an explanatory diagram showing a pressure contact state between a first pressing member and a disc.
FIG. 20 is a perspective view showing an internal mechanism of a second chassis.
FIG. 21 is a plan view showing an internal mechanism of a second chassis.
FIG. 22 is a plan view in which a part of the internal mechanism of the second chassis is omitted.
FIG. 23 is an explanatory view showing a state in which the second pressing member and the disk are released from pressure contact.
FIG. 24 is an explanatory diagram showing a pressure contact state between a second pressing member and a disc.
FIG. 25 is an operation explanatory diagram of the drive driving mechanism.
FIG. 26 is an explanatory diagram showing a clamp release state of the drive unit.
FIG. 27 is an explanatory diagram showing a clamped state of the drive unit.
FIG. 28 is an explanatory view showing a modification of the concave-convex engagement between the engagement pin and the engagement hole.
FIG. 29 is an explanatory view showing a modified example of the uneven engagement between the engaging member and the engaging hole.
[Explanation of symbols]
1 housing
2 Nose parts
2a insertion slot
3 First chassis
4 Second chassis
5 Disc transport mechanism
6 Disc storage section
7 Drive unit
8 Drive drive mechanism
21 Stocker
30 drive chassis
31 Damper member
32 Lock pin
33, 34 Slide cam plate
37 toothless gear
38 Relay gear
52 Actuating plate
53 Lock hole
53a Cam hole
53b Large diameter part
54 Cam plate
55 Lock plate
60 Bracket
61 Spindle motor
62 Turntable
63 Optical pickup
70 Front plate (wall)
70a insertion slot
70b engagement hole
79 engaging pin
80 bush
81 engaging member
82 Spring
D disc

Claims (4)

A housing provided with an insertion port for inserting and ejecting a disk, a disk storage portion provided in the housing and holding a plurality of disks arranged in the thickness direction, and the insertion port and the disk storage portion. A disc transport mechanism for transporting discs between them, a drive unit for reproducing and / or recording information on a selected disc selected from any one of the discs in the disc storage section, and selecting the drive unit A drive drive mechanism that moves back and forth between a drive position for driving a disk and a retracted position that does not drive any disk, and an unlocked state in which the drive unit is elastically supported by the housing via a damper member And a drive lock mechanism that switches to a locked state that is fixedly supported with respect to the housing,
An engagement portion is provided at a portion of the drive unit that faces the wall portion of the housing, and the engagement portion and the wall portion are unevenly engaged when the drive drive mechanism moves the drive unit to the retracted position. And a changer-type disk device configured to hold the drive unit in a locked state by the operation of the drive lock mechanism. 2. The device according to claim 1, wherein the engaging portion is formed of a pin member implanted in the drive unit, and the pin member is inserted into an engagement hole provided in the wall portion at a retracted position of the drive unit. A changer-type disk device characterized in that it is configured as described above. 3. The changer according to claim 2, wherein a bush made of an elastic material is attached to a peripheral portion of the engagement hole, and the pin member is inserted into the engagement hole through the bush. Type disk unit. 2. The engagement portion according to claim 1, wherein the engagement portion includes an engagement member elastically held by the drive unit via a spring member, and the engagement member is provided on the wall portion at a retracted position of the drive unit. A changer-type disk device, wherein the changer-type disc device is configured to be engaged with the formed engagement hole.

Images