JP4041105B2 - In-vehicle disk unit - Google Patents

Description

  The present invention is capable of reproducing and / or recording information on a disc such as a CD (compact disc) or a DVD (digital versatile disc), and a drive unit equipped with an optical pickup, a turntable, etc. is mounted on the chassis. The present invention relates to an in-vehicle disk device in which an anti-vibration measure that can be switched between a locked state and an unlocked state is taken.

  In a changer type disk device, which is an example of a disk device for vehicle mounting, 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, and the interior of a chassis constituting the device body is used. Are provided with a drive unit that rotates and drives the disk to reproduce and / or record information by an optical pickup or the like, and a disk storage unit that can store a plurality of disks arranged in the thickness direction. The drive unit is equipped with an optical pickup, a turntable, and the like, and a clamper support member that rotatably supports the clamper. This drive unit moves forward and backward between the drive position and the retracted position by a drive drive mechanism. It is supposed to do. Then, any one of the plurality of disks held in the disk storage portion at this drive position is selectively pulled out, and the selected disk is clamped (chucking) between the turntable mounted on the drive unit and the clamper. After that, the disc is rotated by a turntable using a spindle motor as a drive source, and the optical pickup is caused to emit light and transported in the radial direction of the disc to reproduce and / or record information on the disc. Play action is to be performed.

Conventionally, in such a changer type in-vehicle disk device, a drive drive mechanism for moving the drive unit back and forth is elastically supported on the chassis via a plurality of dampers, thereby performing a play operation (when reproducing information or recording information). The external vibration does not directly act on the optical pickup or the disc (see, for example, Patent Document 1). That is, this type of changer disk device is provided with a drive lock mechanism that locks or unlocks the drive unit and the drive drive mechanism with respect to the chassis, and is mounted on a turntable that rotates using a spindle motor as a drive source. When playing or recording information with the optical pickup facing the disc, keep the entire drive drive mechanism including the drive unit elastically supported by the chassis, and insert / eject the disc. When a disk or disk is selected, the drive drive mechanism is constrained to lock the chassis. As a result, even if vibration or impact is applied from the outside during the play operation, it is less likely to cause problems such as sound skipping due to vibration isolation measures of the damper, and the positional relationship between the locked drive unit and the disk storage unit By prescribing it, the disk selection operation is not hindered.
Japanese Patent Laying-Open No. 2003-141809 (page 7-9, FIGS. 15-17)

  As described above, in this type of changer-type in-vehicle disk device, the drive drive mechanism is elastically supported by the chassis via the damper during play operation, so that vibration from the outside is applied to the drive unit. Although it is designed not to act directly on the mounted optical pickup or disc, in addition to temperature rise in the passenger compartment, the laser diode of the optical pickup emits light during play operation, so heat generated from the optical pickup Therefore, the internal temperature of the chassis may become very high (for example, 85 degrees), and it is necessary to take care not to damage the damper even in such a high temperature environment. Here, the damper is configured by sealing oil or air inside the rubber outer skin, and if the material or thickness of the outer skin is appropriately selected, a damper excellent in durability at high temperatures can be realized. Such a damper has a problem that the vibration-proof characteristic is remarkably deteriorated when the environmental temperature is lowered, and thus a failure such as sound skipping is likely to occur in a room temperature or low temperature environment.

  Such problems are not limited to changer-type in-vehicle disk devices, but a drive unit equipped with an optical pickup, turntable, etc. is elastically supported by a chassis via a damper, and this drive unit is locked to the chassis. It occurs in the same manner in general in-vehicle disc players in which anti-vibration measures that can be switched between the unlocked state and the unlocked state are taken.

  The present invention has been made in view of the situation of the prior art as described above, and an object thereof is to provide an in-vehicle disk device that has improved vibration durability under a high temperature environment during a play operation.

  The present invention monitors the temperature in the chassis using a temperature sensor, and when the temperature sensor detects a high temperature that is higher than a predetermined temperature during the play operation, the rotation drive of the turntable and the light emission operation of the optical pickup are performed. After both stop, the drive unit is switched from the unlocked state to the locked state while maintaining the disk clamped state.

  The in-vehicle disk device of the present invention monitors the temperature in the chassis using a temperature sensor, and when the temperature sensor detects a high temperature that is higher than a predetermined temperature during the play operation, the rotation drive and light of the turntable are detected. After stopping the light emitting operation of the pickup, the drive unit is switched from the unlocked state to the locked state while keeping the disc clamped state. While using a damper having excellent anti-vibration characteristics in the environment, it is possible to prevent the damper from being damaged in a high-temperature environment and improve vibration durability.

  In the in-vehicle disc device of the present invention, a disc storage unit in which a plurality of discs are held side by side in the thickness direction, a disc having at least an optical pickup and a turntable, and selected from any of the discs in the disc storage unit A drive unit for reproducing and / or recording information with respect to the drive, a drive drive mechanism for moving the drive unit between a drive position for driving the selected disk and a retracted position for driving no disk, and the drive A chassis that elastically supports the unit via a damper, a lock mechanism that locks or unlocks the drive unit with respect to the chassis, and a temperature sensor that can detect the internal temperature of the chassis, Clamp the disc on the turntable to play and / or record information During the play operation, when the temperature sensor detects a temperature higher than a predetermined temperature set in advance, both the rotation drive of the turntable and the light emission operation of the optical pickup are stopped, and then the disc clamp state is maintained. The lock mechanism is configured to switch the drive unit from the unlocked state to the locked state.

  In the changer-type in-vehicle disk device configured as described above, a play operation is performed in which a desired disk is selected from the disks stored in the disk storage unit, and information is reproduced and / or recorded on the selected disk. When the temperature sensor detects a high temperature above a preset temperature, both the rotation drive of the turntable and the light emission operation of the optical pickup are stopped, and then the drive unit is locked while maintaining the disc clamp state. Since it is designed to switch, not only can the optical pickup be reliably protected from high temperatures, but it can also be used to prevent damage to the dampers in high temperature environments while using dampers with excellent vibration isolation characteristics at room temperature and low temperature environments. Can do.

  In the above configuration, when the temperature sensor releases detection of a high temperature equal to or higher than the predetermined temperature, the locking mechanism switches the drive unit from the locked state to the unlocked state and automatically returns to the play operation. It is preferable that the detected temperature of the sensor can be used as a trigger to return to the play state mechanically at the same time as the protection of the optical pickup is released.

  Further, in the in-vehicle disk device of the present invention, a drive unit having at least a turntable and an optical pickup, a chassis that elastically supports the drive unit via a damper, a clamp mechanism that clamps the disk on the turntable, A drive lock mechanism that locks or unlocks the drive unit with respect to the chassis, a switching mechanism that operates the clamp mechanism and the drive lock mechanism, and a temperature sensor that can detect the internal temperature of the chassis, The switching mechanism is in the half-lock position that maintains the locked state of the drive unit while clamping the disk on the turntable during the switching stage in which the clamp mechanism and the drive lock mechanism are operated. When the temperature sensor detects a high temperature that is equal to or higher than a predetermined temperature during a play operation in which information is reproduced and / or recorded by clamping a disk on the turntable, After both the rotation drive of the turntable and the light emission operation of the optical pickup are stopped, the switching mechanism is shifted to the half-lock position and the drive lock mechanism is switched from the unlocked state to the locked state.

  In the vehicle-mounted disc device configured as described above, the drive unit can be locked while chucking the disc by stopping the switching mechanism at the half-lock position, and the disc is automatically transported to the play position to reproduce and / or record information. When the temperature sensor detects a high temperature above a preset temperature during the play operation, the rotation mechanism of the turntable and the light emission operation of the optical pickup are both stopped, and then the switching mechanism is moved to the half-lock position. The drive lock mechanism is switched to the locked state while maintaining the disc clamped state, so that not only can the optical pickup be reliably protected from high temperatures, but also a damper with excellent vibration isolation characteristics at room temperature and low temperature environments. While being used, it is possible to prevent the damper from being damaged in a high temperature environment.

  In the above configuration, when the temperature sensor cancels the detection of the high temperature above the predetermined temperature, the switching mechanism shifts from the half-lock position and automatically returns to the play operation. As a trigger, it is preferable that the optical pickup can be protected and the play state can be mechanically restored at the same time.

  The embodiment will be described with reference to the drawings. FIGS. 1 to 23 illustrate a first embodiment in which the present invention is applied to a changer disk device. FIG. 1 omits the internal mechanism of the changer disk device. 2 is a perspective view showing the internal mechanism of the first chassis, FIG. 3 is an explanatory view showing a loading start state of the disc, FIG. 4 is an explanatory view showing a storage state of the disc, and FIG. FIG. 6 is an explanatory view showing the playing state of the disc, FIG. 7 is a side view of the feed screw member, FIG. 8 is a perspective view of the stocker, and FIG. 9 is a perspective view of the first pressing member. FIG. 10 is an explanatory view of the restricting plate, FIG. 11 is a plan view showing the retracted position of the drive unit, FIG. 12 is a plan view showing the drive position of the drive unit, and FIG. FIG. 14 is an explanatory diagram showing FIG. 15 is a perspective view showing the internal mechanism of the second chassis, FIG. 16 is a plan view showing the internal mechanism of the second chassis, and FIG. FIG. 18 is an explanatory view showing a state in which the second pressing member and the disk are released from pressure contact, and FIG. 19 is an explanatory view showing the state in which the second pressing member is pressed to the disk. FIG. 20 is a diagram for explaining the operation of the drive drive mechanism, FIG. 21 is a diagram for explaining the clamp release state of the drive unit, FIG. 22 is a diagram for explaining the clamp state of the drive unit, and FIG. It is a flowchart which shows the procedure which switches.

  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. The slot-in type in-vehicle disk device is capable of selectively reproducing one disk D.

  As shown in FIG. 1, the changer-type disk device includes a box-shaped casing 1 and a nose member 2 disposed on the front surface of the casing 1, and the nose member 2 has an insertion port 2a. Has been established. The insertion port 2a can be opened and closed by a door member (not shown), and the disk D is inserted into and ejected from the housing 1 through the insertion port 2a. 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 by a drive drive mechanism 8 between a drive position inside the housing 1 and a retracted position near the insertion port 2a.

  The first chassis 3 is shown upside down in FIG. 2, but the disk transport mechanism (disk transport means) 5 is slidable in a direction perpendicular to the transport direction of the disk D as shown in FIG. The first and second guide portions 9 and 10 are provided, and the distance between the guide portions 9 and 10 is constituted by a first motor (not shown), the first and second slide plates 11 and 12, and the like. It can be changed by the guide body interval changing mechanism.

  As shown in FIGS. 3 to 12, the first guide portion 9 includes a plurality of transport pulleys 13 having grooves into which the peripheral edge of the disk D is inserted, and a plurality of drives that apply a driving force to the transport pulley 13. The drive gear 14 is rotated using the first motor described above as a drive source. The transport pulley 13 and the drive gear 14 are arranged in a row and are pivotally supported by the first slide plate 11. Only the support shaft of the innermost transport pulley (denoted by reference numeral 13a) is connected to the transport pulley 13a. It can rotate with respect to the first slide plate 11 around the rotating shaft of the meshing drive gear 14. Further, the first slide plate 11 is formed with a first receiving portion 11a, and the first receiving portion 11a has a height position substantially equal to the lower end (the upper end in the drawing in FIG. 2) of each transport pulley 13. Is set to On the other hand, the second guide portion 10 has a long conveyance guide body 15, and a guide groove extending linearly along the conveyance direction of the disk D is formed in the conveyance guide body 15. The conveyance guide body 15 is fixed to the second slide plate 12, and a second receiving portion set at a height position substantially equal to the first receiving portion 11 a on the lower surface (the upper surface in FIG. 2). 15a is formed. As described above, the first guide portion 9 and the second guide portion 10, the transport pulley 13 (13 a), the drive gear 14, the transport guide body 15 provided in the guide portions 9 and 10, The disc D is transported between the insertion slot 2a and the disc storage portion 6 by the first and second slide plates 11, 12, etc., and selected from the plurality of discs D held in the disc storage portion 6. A disc transport mechanism (disc transfer means) 5 for drawing the disc D to the play position is configured.

  The first and second guide portions 9 and 10 sandwich the disk D between the transport pulley 13 and the transport guide body 15 in a direction perpendicular to the plate thickness direction, and are transmitted from the drive gear 14 to the transport pulley 13. By applying a driving force to the disc D, the disc D is transported between the insertion slot 2a and the play position or between the play position and the disc storage portion 6. Moreover, since the transport pulley 13 and the transport guide body 15 can be moved closer to and away from each other by sliding the first and second slide plates 11 and 12, the transport can be performed on both the small diameter disk D and the large diameter disk D. Can do. Further, since the first and second receiving portions 11a and 15a are set at a height position substantially equal to the lower end of each conveying pulley 13, when the disk D is inserted or ejected, as is apparent from FIG. The disc D can be prevented from dropping unintentionally from between the transport pulley 13 and the transport guide body 15.

  Returning to FIG. 2, the disk storage unit 6 described above will be described in detail. A ring-shaped large-diameter gear 16 is disposed on the top surface (bottom surface in FIG. 2) 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 using a second motor (not shown) different from the first motor described above as a drive source, and the amount and direction of rotation of the large-diameter gear 16 are determined by the large-diameter gear 16. Is detected by a detection sensor 18 composed of an encoder or the like that rotates in mesh (see FIG. 11). Four feed screw members 19 are disposed outside the large diameter gear 16. As shown in FIG. 7, 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.

  Each feed screw member 19 has a plurality (six in this embodiment) of holes 22 of stockers 21 inserted therein. As shown in FIG. 8, 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 in the central direction on the semicircular inner circumferential 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.

  Returning to FIG. 2 again, 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. 6, when the desired disc D is pulled out to the play position, the projecting piece 24a is stopped above the disc D, so that the disc D during the play operation and the stocker 21 at the position above the disc D. The held disk D is prevented from colliding.

  As shown in FIG. 9, 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 a sufficient elastic force is applied to the pressing portion 25c by adding the elastic force of the plate 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 intervals between the taper grooves 27a are set to be equal to the equal pitch portions at the upper and lower ends 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.

  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. As will be described later, this rotation operation will be described later. As shown in FIG. 11, 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. 13). On the other hand, as shown in FIG. 12, 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. 14). 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.

  As shown in FIGS. 15 to 17, a drive unit 7 and a drive drive mechanism 8 are mounted on the second chassis 4, and the drive drive mechanism 8 attaches the drive unit 7 to the nose member 2, the disk storage unit 6, and the like. Between the drive position and the retracted position, and the disk D pulled out to the play position is clamped. 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 through damper members 31 and coil springs (not shown). However, when the lock pins 32 are protruded from four side portions of the drive chassis 30 and these lock pins 32 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. Each damper member 31 is an oil damper in which oil is sealed inside a rubber outer skin or an air damper in which air is sealed.

  As shown in FIGS. 18 and 19, 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 meshes with the toothless gear 37, and this relay gear 38 rotates using a third motor (not shown) 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 39a at the upper end, and the restricting arm 39a is rotated by a switching member (not shown) housed inside 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.

  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 synthetic resin having flexibility. A coil spring 41 is stretched between the flat portion 40 b and the second chassis 4, and the second pressing member 40 is urged to rotate clockwise in FIGS. 18 and 19 by the coil spring 41. Yes. In addition, a regulating 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 is omitted, but the regulating 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 regulating plate 27. Further, a through hole 40d is formed in the flat portion 40b, and a protrusion 36a formed on the rotating arm 36 protrudes 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.

The rotating arm 36 can rotate around a support shaft 43 protruding from the second chassis 4, and a slide cam plate (sliding member) 34 supported at one end thereof so as to be able to move forward and backward. Are connected, and the other end is engaged 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 (sliding) supported by the rotating arm 44 so as to be able to move forward and backward in the same manner. Member) 33 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. FIG. 18 shows a state in which the drive unit 7 is in the retracted position. In this case, the protrusion 36a of the rotating arm 36 is in contact with the inner peripheral edge (engagement portion) below the through hole 40d. The second pressing member 40 cannot rotate, 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. 19 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. 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.

  Returning to FIGS. 15 to 17, 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 is always meshed with the upstream cam gear 46, a third idler gear 48 that is always meshed with the second idler gear 47, and a third idler gear 48 that is always meshed 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.

  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. A switching operation is performed.

  As shown in FIG. 20, 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. It reaches into the escape hole 4a. Although not shown, the slide cam plate 33 disposed on the other side surface of the second chassis 4 has the same configuration. FIGS. 20A to 20D sequentially show the state in which the drive unit 7 moves from the drive position to the retracted position. As shown in FIG. 20A, 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 in an unlocked state elastically supported by the second chassis 4 via a damper member 31 and a coil spring, and the selected disk D is played in this unlocked 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 in a locked state in which it is fixedly supported in the vertical direction and the front-back direction with respect to the second chassis 4. As described above, the unlocked state in which the drive unit 7 is elastically supported in the housing 1 via the drive chassis 30 and the housing by the pair of slide cam plates 33 and 34, the operation plate 52, and the connecting mechanism described above. A drive lock mechanism is configured that switches to a locked state that is fixedly supported within the drive 1.

  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. 13 and 14). 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.

  Next, the configuration of the drive unit 7 will be described. As shown in FIGS. 21 and 22, 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 7 a and 7 b are formed in the bracket 60. Is provided. A spindle motor 61 is attached to the central portion of the bracket 60, and a turntable 62 is fixed to the rotation shaft of the spindle motor 61. 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 arranged to face each other via a spindle motor 61. The optical pickup 63 includes a laser diode, a light receiving element, and the like (not shown). The laser light emitted from the laser diode is focused on the disk through the objective lens, and the return light reflected by the disk is passed through the objective lens. The light receiving element is configured to receive light. The optical pickup 63 meshes with the screw shaft 65. By rotating the screw shaft 65 using a thread motor (not shown) as a drive source, the optical pickup 63 is rotated in the axial direction of the screw shaft 65 (the radius of the disk D). Direction).

  The support plate (clamper support member) 64 is formed in a U-shaped cross section, and this support plate 64 moves back and forth inside the drive portion 25d of the first pressing member 25 described above (see FIGS. 13 and 14). . 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. 21 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. A temperature sensor 70 is mounted at an appropriate position of the drive unit 7 (see FIGS. 16 and 17), and the internal temperature of the housing 1 can be detected by the temperature sensor 70.

  The clamping operation of the disk D will be described with reference to FIG. 20 described above. First, as shown in FIG. When the drive unit 7 is in the retracted position, as shown in FIG. 21B, the clamper 66 is in a clamp release state (clamp release state) in which the clamper 66 is separated from the turntable 62. 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.

  When the slide cam plate 34 moves to the back side of the second chassis 4 by the rotation of the rotation arm 36 after the drive unit 7 moves to the drive position, 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. In addition, the lock groove 55a of the lock plate 55 is locked to the pin 59 of the slide cam plate 34, so that 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 54a 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 is moved in the direction of arrow A in FIG. 22 to move the slide plate 67 in the arrow B direction, the support plate 64 is lowered together with the clamper 66 and the clamper 66 is pressed against the turntable 62 via the disk D as shown in FIG. (Pinched state).

  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. 20A, the cam plate 54 and the lock plate 55 are moved to the left side in the drawing 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 in an unlocked state elastically supported by the second chassis 4, and the selected disk D is played in this unlocked state.

  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 capable of reproducing 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, a play operation for selectively reproducing a plurality of large-diameter discs D stored in the stocker 21 will be described.

  When a desired selected disk D is played from a plurality of disks D held by each stocker 21, first, the drive unit 7 is moved to a retreat position (see FIG. 11) farthest from the stocker 21, and this In this state, the large-diameter gear 16 is rotated, and the stocker 21 holding a desired selected disk is raised or lowered to a height position equivalent to the conveyance path of the disk D. At this time, as shown in FIG. 20 (d), the drive chassis 30 is in a locked state in which it is fixedly supported with respect to the second chassis 4, and as shown in FIG. Since the outer surface of the support plate 64 is in contact with the tip of the driving portion 25d of the first pressing member 25, the position of the first pressing member 25 is maintained in the state of rotating in the clockwise direction in the drawing. The disk D held by the stocker 21 is in a state where the pressing force from the first pressing member 25 is released. Further, as shown in FIG. 18, since the rotating 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.

  Next, the toothless gear 37 is rotated counterclockwise in FIG. 18 by using a third motor (not shown) as a drive source, and the first idler gear 45 meshing the rotational force of the toothless gear 37 with the tooth portion 37a. The drive unit 7 is moved from the retracted position to the play position (see FIG. 12) by transmitting to the arms 50 and 51 via a gear group such as. 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. 4, the 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 is pulled out to the play position is detected by pressing a switch (not shown) installed in the guide groove of the transport guide body 15 to the outer peripheral edge of the disk D.

  When the drive unit 7 moves 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. 20D to the position shown in FIG. 20C, the drive chassis 30 on which the drive unit 7 is mounted rises, so that the center portion of the turntable 62 is played. The center hole of the selected disk D drawn into the position enters the center hole, and the centering operation of the selected disk D is performed reliably. 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 selection 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.

  When the slide cam plate 34 moves from the position shown in FIG. 20 (c) to the position shown in FIG. 20 (a), the drive chassis 30 is fixedly supported on the second chassis 4 by the drive lock means described above. The lock mode to be released 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. At this time, as shown in FIG. 23, the spindle motor 61 is driven to rotate and the laser diode of the optical pickup 63 is caused to emit light (S-1), and then the optical pickup 63 is moved in the axial direction of the screw shaft 65 (selection disk D , The play operation for reproducing the information recorded on the selected disk D is executed (S-2).

  During this play operation, the temperature sensor 70 continues to monitor the internal temperature of the housing 1 (S-3). If the temperature detected by the temperature sensor 70 is less than a predetermined temperature (for example, 85 degrees), (S- Return to 2) and continue the play operation in the image stabilization mode. On the other hand, if the temperature sensor 70 detects a temperature higher than the predetermined temperature in (S-3), the rotation of the spindle motor 61 is stopped and the light emitting operation of the optical pickup 63 is stopped (S-4). The drive chassis 30 is shifted from the image stabilization mode to the lock mode while maintaining the clamped state (clamped state) of the selected disk D (S-5). That is, when the drive unit 7 is at the drive position, the turn cam 62 and the clamper 66 are moved by moving the slide cam plate 34 from FIG. 20A to the position shown in FIG. The anti-vibration mode is canceled while the selected disk D is clamped between the drive unit 7 and the drive unit 7 is in a locked state in which the drive unit 7 is fixedly supported by the second chassis 4 via the drive chassis 30. As described above, when the temperature inside the housing 1 becomes higher than the predetermined temperature due to the light emitting operation of the optical pickup 63, the drive chassis 30 elastically supported by the second chassis 4 via the damper member 31. Is in a locked state, so that the damper member 31 is prevented from being damaged in a high temperature environment.

  Thereafter, the temperature sensor 70 continues to monitor the internal temperature of the housing 1 (S-6). If the temperature detected by the temperature sensor 70 is higher than the predetermined temperature, the process returns to (S-4) (S-5). However, if the temperature detected by the temperature sensor 70 is lower than the predetermined temperature, the drive chassis 30 in the lock mode is switched to the image stabilization mode (S-7) and then (S-1). Returning, the rotation drive of the spindle motor 61 and the light emission operation of the optical pickup 63 are started, and then the play operation is executed again. That is, when the slide cam plate 34 moved to the position shown in FIG. 20C is returned to the position shown in FIG. 20A through FIG. 20B, the drive chassis 30 passes through the damper member 31 and the like. The unlocked state is elastically supported by the second chassis 4, and after the drive chassis 30 is thus shifted to the anti-vibration mode, the reproducing operation of the selected disk D is automatically executed again.

  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 of 25d 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. The restricting plate 27 is pressed against the outer peripheral edge of all the standby disks D located above the selected disk D pulled out to the play position. Further, as shown in FIG. 19, the second pressing member 40 receives the elastic 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.

  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.

  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. 20 (a) to the position shown in FIG. 20 (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 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.

  As described above, in the changer-type in-vehicle disk device according to the present embodiment, the desired disk D is selected from the plurality of disks D stored in the stocker 21 and pulled out to the drive unit 7, and this selection is performed. During a play operation for reproducing or recording information on the disk D, when the temperature sensor 70 detects a temperature higher than a predetermined temperature set in advance, the spindle motor 61 rotates the turntable 62 and the optical pickup 63 After stopping both the light emitting operations, the drive unit 7 is switched from the anti-vibration mode (unlocked state) to the locked state while the selected disk D is clamped on the turntable 62. Not only can it be protected, but also uses a damper member 31 that has excellent anti-vibration properties at room temperature and low temperature. , It is possible to prevent breakage of the damper member 31 in a high temperature environment. Further, when the detection of the high temperature by the temperature sensor 70 is canceled, that is, using the temperature detected by the temperature sensor 70 as a trigger, the rotational drive of the spindle motor 61 and the light emission operation of the optical pickup 63 are resumed to release the protection of the optical pickup 63. At the same time, since the drive unit 7 is mechanically switched from the locked state to the unlocked state and automatically returns to the play operation, such an operation can be easily realized only by changing the software. it can.

  In the above-described embodiment, the drive unit 7 moves in parallel between the drive position and the retracted position. However, the drive unit is rotatably supported with its left and right end sides as fulcrums, You may make it move between a drive position and a retracted position. Further, the clamp mechanism for clamping the disk on the turntable 62 is not limited to the one using the clamper 66, and a so-called self-chucking mechanism in which a plurality of clamp claws are provided on the turntable may be adopted.

  FIGS. 24 to 45 illustrate a second embodiment in which the present invention is applied to an in-vehicle disc player. FIG. 24 is a plan view of the in-vehicle disc player, and FIG. 25 is a diagram in which the top chassis is removed from the disc player. 26 is a perspective view showing the disc player with the top chassis and the guide member removed, FIG. 27 is an exploded perspective view of the drive unit, the guide member, the slide member and the like provided in the disc player, and FIG. 28 is the disc FIG. 29 is a plan view of the link mechanism at the time of ejection, FIG. 30 is a plan view of the link mechanism at the time of play, and FIG. 31 is an eject position of a slide member provided in the disc player. FIG. 32 is an explanatory view at the half-lock position of the slide member. 33 is an explanatory view of the slide member at the play position, FIG. 34 is a perspective view of the slide member at the time of ejection, FIG. 35 is a perspective view of the slide member at the half-lock position, and FIG. 36 is a view of the slide member at the time of play. 37 is a plan view of a disk positioning mechanism provided in the disk player, FIG. 38 is a front view of the disk positioning mechanism, FIG. 39 is a right side view of the disk positioning mechanism, and FIG. 40 is a small diameter disk mounted state. FIG. 41 is a front view of the disk positioning mechanism showing a mounted state of a small-diameter disk, FIG. 42 is a plan view of the disk positioning mechanism showing a mounted state of a large-diameter disk, and FIG. FIG. 44 is a front view of the disk positioning mechanism showing the mounted state of the large-diameter disk. FIG. Plan view of to the disc positioning mechanism, FIG. 45 is a flowchart showing a procedure for switching the anti-vibration mode during play operation.

  The in-vehicle disc player according to the present embodiment can also use both large and small discs D having an outer dimension of 8 cm and 12 cm. Hereinafter, a symbol SD is attached to a small disc having a diameter of 8 cm as necessary. Then, a code LD may be attached to a large-diameter disk having a diameter of 12 cm.

  As shown in FIGS. 24 to 26, this in-vehicle disc player includes a chassis 101 and a top chassis 102 forming an apparatus main body, and the chassis 101 and the top chassis 102 are formed by bending a metal plate. A front plate 101c provided in front of the chassis 101 is cut out at an upper portion thereof to form a slit-like insertion slot 101d, and a disk D (SD, LD) is inserted / inserted into the apparatus main body through the insertion slot 101d. Discharged. The top chassis 102 is formed in a frame shape with its central portion being greatly cut out, and is fixed to the upper surface of the chassis 101 with screws, and a guide member 103 and a roller constituting a disk transport mechanism below the top chassis 102. 104 is arranged.

  As shown in FIG. 27, the guide member 103 has a flat plate portion 103a and a pair of side plate portions 103b that are bent on the left and right sides of the flat plate portion 103a. Thus, four drive pins 103c are implanted. The lower surface of the flat plate portion 103a has a gentle taper shape that is inclined downward from the substantially central portion on the left and right sides toward the both side plate portions 103b. A portion 103d is formed, and a bent portion 103e that protrudes upward is formed on the front and rear edges of the flat plate portion 103a. Each drive pin 103c is engaged with a cam groove formed in a pair of left and right slide members, which will be described later, and when these slide members move in the front-rear direction, the guide member 103 moves relative to the chassis 101. The robot moves up and down while maintaining a parallel state.

  The roller 104 is formed in a tapered shape whose diameter gradually increases from the central portion toward both ends, and is driven to rotate in both forward and reverse directions by power from a motor (not shown). The roller 104 is rotatably supported at one end portion of the roller bracket 105, and the other end portion of the roller bracket 105 is freely turnable by left and right locking plates 101b (see FIG. 26) formed by bending on the bottom surface of the chassis 101. It is supported by. Both end portions of the roller 104 are also engaged with cam grooves of both slide members, which will be described later, and when these slide members move in the front-rear direction, the roller bracket 105 engages with the locking plate 101b. The roller 104 is moved up and down by turning the joint portion as a fulcrum. As a result, the disk D inserted from the insertion port 101d can be sandwiched between the lower surface of the guide member 103 and the roller 104, and at this time, the large diameter portion of the roller 104 is made to face both escape portions 103d of the guide member 103. Thus, the central portion of the disk D can be securely clamped between the guide member 103 and the roller 104.

  As shown in FIGS. 25 and 26, a pair of detection levers 106 are rotatably supported on the bottom surface of the chassis 101, and a circuit board 107 (see FIGS. 34 to 36) is fixed below the detection levers 106. Has been. Detection pins 106a are erected at the tips of the detection levers 106, and the upper ends of the detection pins 106a are respectively inserted into arc-shaped guide holes 102a formed in the top chassis 102 (see FIG. 24). . Each detection lever 106 is urged in a direction in which both detection pins 106a approach each other by a spring (not shown), and a drive portion 106b is formed at the rear end of the detection lever 106 on the left side in the drawing. Further, a switch (not shown) is mounted on the circuit board 107, and the outer peripheral edge of the disk D inserted from the insertion port 101d abuts on at least one of the detection pins 106a so that the detection lever 106 is moved outward by a predetermined angle. When the detection lever 106 rotates, the switch operates to start the driving motor for the roller 104 described above.

  A drive unit 108 is disposed inside the apparatus main body, and the drive unit 108 has a drive chassis 109 formed by bending a metal plate. The drive chassis 109 is elastically supported on the bottom surface of the chassis 101 by a plurality of damper members 110 (see FIGS. 29 and 30) and an elastic member such as a coil spring (not shown), and lock pins 109a, 109b protrudes, a guide pin 109c protrudes on the right side, and a lock pin (not shown) protrudes on the lower surface. An optical pickup 111, a spindle motor 112, and the like are mounted on the drive chassis 109, and a turntable 113 is fixed to the rotation shaft of the spindle motor 112 (see FIG. 38). Further, an arm clamp (clamper support member) 114 is disposed on the drive chassis 109, and the arm clamp 114 has guide grooves 114a and 114a formed on both left and right side surfaces thereof and a lock pin 109a of the drive chassis 109 and a guide. The pin 109c is engaged and supported so as to be movable in the vertical direction. Further, a projecting piece (not shown) is integrally formed on the left side surface of the arm clamp 114, and a pair of drive pins 114b and 114b are projected on the right side surface. A clamper 115 is rotatably supported by the arm clamp 114, and the drive pins 114b and 114b of the arm clamp 114 are engaged with cam holes 116b and 116b (see FIG. 39) of the drive arm 116. The drive arm 116 is supported at the right end of the drive chassis 109 so as to be slidable in the front-rear direction, and is elastically biased toward the insertion port 101d by a spring 117. Note that an engagement protrusion 116a provided on the drive arm 116 is detachably opposed to a protrusion of a right slide member to be described later.

  As shown in FIGS. 37 to 39, a pair of positioning members 118 and 119 are rotatably supported on the drive chassis 109, and these positioning members 118 and 119 are center holes of the disks SD or LD having different diameters. Each has a function of aligning with the turntable 113. The left positioning member 118 is composed of a synthetic resin arm lever 118b having a tooth portion 118a at the rear end, and a regulating arm 118c made of a leaf spring fixed in a cantilever manner to the tip of the arm lever 118b. The free end (tip) of the restricting arm 118c is in elastic contact with the lower surface of the arm clamp 114. The right positioning member 119 includes an arm lever 119b made of a metal plate having a tooth portion 119a at the rear end, and a regulating arm 119c made of a leaf spring fixed in a cantilever manner to the tip of the arm lever 119b. The free end (tip) of the restriction arm 119c is also in elastic contact with the lower surface of the arm clamp 114. Both positioning members 118 and 119 are rotated synchronously when their tooth portions 118a and 119a mesh with each other, and are biased by a spring (not shown) in a direction in which the distance between the distal ends approaches each other.

  A first end detection lever 136 is rotatably supported by the drive chassis 109, and a lock lever 120 is supported to be movable in the left-right direction. The first end detection lever 136 has an abutting portion 136a that can abut against the outer peripheral edge of the disk SD having a diameter of 8 cm, and the abutting portion 136a is located at the center of both arm levers 118b and 119b. The arm lever 118b of the positioning member 118 and the first end detection lever 136 are connected to a pin (not shown) through a long hole. When the left positioning member 118 rotates outward, the first end detection lever 136 is interlocked with the rotation. Rotates to the back side of the drive chassis 109. Further, a relay member (not shown) is connected to the end portion of the first end detection lever 136 on the opposite side to the contact portion 136a, and the rotation of the first end detection lever 136 is described later via the relay member. It is selectively transmitted to the end detection lever. A lock 120a formed at the rear end of the lock lever 120 can be engaged with and disengaged from the arm lever 118b of the left positioning member 118. The lock lever 120 is moved to the left side of the drive chassis 109 by a spring (not shown). It is energized. The front end of the lock lever 120 is provided with a pressing portion 120b that faces the driving portion 106b of the left detection lever 106 described above. When a disk LD having a diameter of 12 cm is inserted, the driving portion 106b moves the pressing portion 120b. The lock lever 120 is pressed to move to the right, and the restraint of the positioning member 118 by the lock portion 120a is released.

  Both the above-mentioned slide members are disposed inside the left and right side plates 101a of the chassis 101. Hereinafter, the left slide member will be referred to as a first slide member and denoted by reference numeral 121 as needed. May be referred to as a second slide member and denoted by reference numeral 122. Both slide members 121 and 122 are both made of synthetic resin and supported by the chassis 101 so as to be movable in the front-rear direction.

  As shown in FIGS. 29 and 30, a second end detection lever 137 is rotatably supported at the left rear portion of the bottom surface of the chassis 101, and a motor 123 that is a drive source of the first slide member 121 is installed. ing. The second end detection lever 137 has an abutting portion 137a that can abut on the outer peripheral edge of the disk LD having a diameter of 12 cm, and is urged clockwise by a spring (not shown). The power of the motor 123 is transmitted to the final stage gear 138 through a gear train, and the rack 124 facing the gear 138 is moved in the front-rear direction on the bottom plate portion of the left first slide member 121. It is supported so as to be movable by a predetermined distance. The rack 124 is urged rearward away from the gear 138 by a spring (not shown), but the second end detection lever 137 rotates counterclockwise, and the second end detection lever 137 is opposite to the contact portion 137a. When it is pushed forward by the end of the gear, it meshes with the gear 138. Thereafter, when the rack 124 moves forward by a predetermined distance by the power of the motor 123, the moving force of the rack 124 is transmitted to the first slide member 121, and the rack portion 121 h formed on the bottom plate portion of the first slide member 121 causes the gear 138. To mesh. As a result, the power of the motor 123 is transmitted to the left first slide member 121 via the gear 138, and the movement of the first slide member 121 is transmitted to the right second slide member 122 via the link mechanism 125. It has become.

  As shown in FIG. 28, the link mechanism 125 includes a first link lever 126 and a second link lever 127, and the first and second link levers 126 and 127 can rotate on the bottom surface of the chassis 101. It is supported by. The left end portion of the first link lever 126 is rotatably connected to the rear end portion of the first slide member 121, and the right end portion of the second link lever 127 is rotatably connected to the rear end portion of the second slide member 122. The pin 126 a planted at the right end of the first link lever 126 is inserted into a cam hole 127 a drilled at the left end of the second link lever 127. Accordingly, when the first link lever 126 rotates as the first slide member 121 moves forward and backward, the pin 126a moves in the cam hole 127a, so that the second link lever 127 rotates, and the second slide member 122 moves. The first slide member 121 can be moved back and forth in the same direction. That is, the first slide member 121 is a drive side that is operated using the motor 123 as a drive source, and the second slide member 122 is a driven side that is operated in synchronization with the first slide member 121.

  Further, a lock lever 128 is rotatably supported inside the left side plate 101a of the chassis 101. The lock lever 128 is rotated by the forward and backward movement of the first slide member 121, and accordingly, provided on the left side of the drive chassis 109. The lock pin 109a is engaged and disengaged. On the other hand, the lock slide member 129 is supported inside the right side plate 101a of the chassis 101 so as to be movable in the front-rear direction, and the link arm 130 is supported rotatably. The link arm 130 is rotated by the forward / backward movement of the second slide member 122, and the lock slide member 129 is moved in the opposite direction to the second slide member 122 along with the rotation. The lock slide member 129 is provided with a lock hole 129a. The lock hole 129a engages and disengages a lock pin 109b provided on the right side of the drive chassis 109. Further, a center lock lever 131 having a lock arm 131a is rotatably supported on the bottom surface of the chassis 101. The center lock lever 131 rotates in conjunction with the first link lever 126, and accordingly the drive chassis 109 is rotated. An engagement / disengagement operation of a lock pin (not shown) provided at the central portion of the lower surface of the underside is performed.

  As shown in FIGS. 31 to 36, a plurality of cam grooves 121a to 121e are formed on the inner surface of the first slide member 121 on the left side, and the first drive portion 121f and the second drive portion 121g are formed on the inner bottom portion thereof. Are integrally formed. A cam-shaped pressing piece 121 j is formed on the inner surface of the first slide member 121. The pressing piece 121j is located at a position where it can dive downward with respect to the protruding piece formed on the arm clamp 114, thereby exerting a force for raising and lowering the arm clamp 114. On the other hand, the first detection switch 132 and the second detection switch 133 are mounted on the circuit board 107 described above, and the actuator portion 132a of the first detection switch 132 protrudes from the left side surface of the circuit board 107, and the second detection switch 133. The actuator portion 133 a protrudes above the circuit board 107. The first detection switch 132 is operated by the first drive part 121f pressing the actuator part 132a when the first slide member 121 moves forward. The first drive part 121f and the first detection switch 132 are set to a half-lock position described later. It functions as a detectable position detection means. The second detection switch 133 is operated by the second drive unit 121g pressing the actuator unit 132a when the first slide member 121 moves forward, and the second drive unit 121g and the second detection switch 133 function as load end detection means. To do. The right second slide member 122 is also formed with a plurality of cam grooves 122a to 122c, and a protrusion 122d is formed on the upper surface thereof. Further, a temperature sensor 134 is mounted on the circuit board 107 (see FIGS. 34 to 36), and the internal temperature of the apparatus main body can be detected by the temperature sensor 134. 31 to 33 show a state in which each slide member is viewed from the inside of the apparatus main body.

  With respect to the first and second slide members 121 and 122, both end portions of the roller 104 are engaged with the cam grooves 121a and 122a of the slide members 121 and 122, and the left and right drive of the guide member 103 is driven. The pin 103c is engaged with the cam grooves 121b, 122b and 121c, 122c of the slide members 121, 122, respectively. Also, the lock pin 109a on the left side of the drive chassis 109 engages with the cam groove 121d of the first slide member 121, and the pin 128a implanted in the lock lever 128 engages with the cam groove 121e of the first slide member 121. ing. Further, the engagement protrusion 116a of the drive arm 116 is detachably opposed to the protrusion 122d of the second slide member 122, and the drive pins 114b and 114b of the arm clamp 114 are inserted into the cam holes 116b and 116b. Further, the lock pin 109b on the right side of the drive chassis 109 is engaged with the lock hole 129a of the lock slide member 129 that moves in the opposite direction to the second slide member 122 via the link arm 130. Accordingly, when the first and second slide members 121 and 122 move back and forth in the same direction, the roller 104 and the guide member 103 are moved up and down along with the movement, and the lock / unlock switching operation of the drive chassis 109 and the arm The clamp 114 is moved up and down.

  Thus, in this embodiment, the arm clamp 114 is brought into contact with the drive chassis 109 by the drive pins 114b and 114b and the projecting piece of the arm clamp 114, the pressing piece 121j of the first slide member 121, and the drive arm 116. A clamp mechanism is configured to operate in the lifting and lowering direction to clamp and release the disk D between the clamper 115 and the turntable 113. Further, the drive unit 108 is mounted on the chassis by the lock pins 109a and 109b of the drive chassis 109 and the lock pins on the lower surface, the cam groove 121d of the first slide member 121, the lock lever 128, the lock slide member 129, the link arm 130 and the center lock lever 131. A drive lock mechanism that locks / unlocks 101 is configured. Further, the first and second slide members 121 and 122 and the link mechanism 125 constitute a switching mechanism for performing the switching operation of the clamp mechanism and the drive lock mechanism.

  Next, the operation of the in-vehicle disc player configured as described above will be described.

  When the disk D (SD, LD) is ejected without being inserted into the apparatus main body (standby state), the first and second slide members 121 and 122 are at the farthest rearward position of the chassis 101. As shown in FIG. 31, at the time of such ejection, both end portions of the roller 104 are at the upper position on the front side of the cam grooves 121a and 122a, and the drive pins 103c of the guide member 103 are cam grooves 121b and 122b and cam grooves 121c. , 122c in the middle position on the front side. Therefore, the guide member 103 is held at the lowered position corresponding to the insertion port 101 d, and the roller 104 is held at the raised position pressed against the lower surface of the guide member 103. The left lock pin 109a of the drive chassis 109 is restrained from the front and rear direction by the cam groove 121d of the first slide member 121 and the lock lever 128, and the right lock pin 109b is the inner edge of the lock hole 129a of the lock slide member 129. And a lock pin (not shown) on the lower surface of the drive chassis 109 is locked to the lock arm 131a of the center lock lever 131, so that the drive unit 108 is fixed to the chassis 101 in the front / rear / right / left and up / down directions. In a locked state. Further, since the engagement protrusion 116a of the drive arm 116 is pressed by the protrusion 122d of the second slide member 122 and the drive arm 116 is also in the retracted position, the drive pins 114b and 114b of the arm clamp 114 as shown in FIG. Rises along the cam holes 116b, 116b of the drive arm 116, and the pressing piece 121j of the first slide member 121 sinks into the lower side of the protruding piece of the arm clamp 114 and lifts the protruding piece upward. The arm clamp 114 is held at a raised position away from the drive chassis 109. Therefore, as shown in FIG. 38, the clamper 115 stands by directly above the turntable 113 to secure an insertion space for the disk D. At this time, the restricting arms 118c and 119c of the positioning members 118 and 119 extend in a direction approaching the clamper 115 from the arm levers 118b and 119b and are in elastic contact with the lower surface of the arm clamp 114. 120a is locked to the arm lever 118b to restrain the rotation of the positioning member 118.

  In such a standby state, when the disk D (small-diameter disk SD or large-diameter disk LD) starts to be inserted into the apparatus main body from the approximate center of the insertion port 101d, the outer peripheral edge on the front end side in the insertion direction of the disk D is The two detection levers 106 are in contact with the detection pins 106a and are rotated by the insertion force of the disk D so that both detection levers 106 expand outward. When a switch (not shown) detects that at least one detection lever 106 has rotated by a predetermined angle, a motor (not shown) is started to rotate the roller 104. When the disk D is further pushed in, the leading end in the insertion direction of the disk D is sandwiched between the lower surface of the guide member 103 and the roller 104, and the disk D is conveyed into the apparatus main body by the rotational force of the roller 104. During this time, the drive chassis 109 is maintained in a locked state, and the arm clamp 114 is held at a standby position above the drive chassis 109, so that the drive chassis 109 and the arm clamp 114 (the turntable 113 and the clamper are not connected). 115), a transport path for the disk D is secured. Note that when the insertion of the disk D is detected by the switch, the motor 123 installed in the left inner part of the chassis 101 also starts rotating.

  Here, when the inserted disc D is a small disc SD having a diameter of 8 cm, the angle of outward expansion of both detection levers 106 is small, so that the pressing portion 120b of the lock lever 120 is detected by the detection lever while the disc SD is being transported. The positioning members 118 and 119 are in a locked state in which the positioning members 118 and 119 are constrained to a predetermined opening angle. Alternatively, when the disc SD is inserted from the left side of the insertion slot 101d, the lock lever 120 is temporarily slid rightward by the drive unit 106b of the detection lever 106, but the detection lever 106 is being moved while the disc SD is moving backward. Therefore, when the disk SD is transported to a position where the center hole of the disk SD is directly above the turntable 113, the positioning members 118 and 119 are returned to the locked state. Therefore, when the disk SD is transported to the back side through between the drive chassis 109 and the arm clamp 114, as shown in FIG. 40 and FIG. Abutting on the tips of the arm levers 118b and 119b, the center hole of the disk SD is correctly aligned with the turntable 113. At that time, since the restricting arms 118c and 119c of the positioning members 118 and 119 extend from the tips of the arm levers 118b and 119b, respectively, and elastically contact the lower surface of the arm clamp 114, even if vibration or impact is applied from the outside, The disc SD being transported does not pass above both arm levers 118b and 119b, and the disc SD can be reliably positioned by the both positioning members 118 and 119 while being guided by the regulating arms 118c and 119c.

  Further, when the disk SD is aligned with the turntable 113 in this way, the leading end of the disk SD being conveyed contacts the contact portion 136a and the first end detection lever 136 rotates counterclockwise. Therefore, the second end detection lever 137 is also rotated counterclockwise via a relay member (not shown) to mesh the rack 124 with the gear 138. When the rack 124 moves on the bottom plate portion of the first slide member 121 to the movement limit position, the rack 124 and the first slide member 121 are substantially integrated, so that the first slide member 121 starts to move forward. The rack portion 121h meshes with the gear 138. As a result, the rotational power of the motor 123 is transmitted to the left first slide member 121 via the gear 138, and the movement of the first slide member 121 is transmitted to the right second slide member 122 via the link mechanism 125. As a result, the first and second slide members 121 and 122 start moving from the farthest backward position of the chassis 101 to the forward position. Further, when the disk SD is aligned with the turntable 113, both the detection levers 106 are separated from the disk SD and return to the initial position, and this is detected by the switch to stop the rotation of the roller 104. . Alternatively, the rotation of the roller 104 may be stopped by detecting the rotation of the second end detection lever 137 with a switch (not shown).

  On the other hand, when the inserted disk D is a large-diameter disk LD having a diameter of 12 cm, the outward spreading angle of both the detection levers 106 is larger than that of the disk SD, so that the lock lever 120 is being transported during the transport of the disk LD. The pressing portion 120b is pressed by the driving portion 106b of the detection lever 106, and the lock lever 120 moves rightward, and the positioning members 118 and 119 are released from the restraint by the lock portion 120a of the lock lever 120. Therefore, when the disk LD is transported to the back side through between the drive chassis 109 and the arm clamp 114, as shown in FIGS. 44A to 44D, the outer peripheral edge on the front end side in the transport direction of the disk LD. After the two locations are in contact with the tips of the arm levers 118b and 119b, the positioning members 118 and 119 rotate in a direction in which the opening angle of the disk LD increases due to the conveying force of the disk LD, and accordingly both the regulating arms 118c and 119c. Slides on the lower surface of the arm clamp 114. When the positioning members 118 and 119 are stopped at a predetermined opening angle by a stopper (not shown), the center hole of the disk LD is correctly positioned with respect to the turntable 113 as shown in FIGS. Aligned. Also in this case, the restricting arms 118c and 119c of the positioning members 118 and 119 extend from the tips of the arm levers 118b and 119b and are in elastic contact with the lower surface of the arm clamp 114, so that even if vibration or impact is applied from the outside, Since the leading end side in the transport direction of the disk LD is guided by the restriction arms 118c and 119c, the disk LD being transported does not pass above both arm levers 118b and 119b, and the disk LD is driven by the positioning members 118 and 119. Can be reliably positioned.

  As described above, since the first end detection lever 136 and the arm lever 118b of the positioning member 118 are connected to each other via a pin (not shown) and a long hole, the first end detection lever 136 is interlocked with the positioning member 118. The abutting portion 136a rotates so as to escape from the disk LD, but the rotational force of the first end detection lever 136 is blocked by the relay member and is not transmitted to the second end detection lever 137. However, when the disk LD is aligned with the turntable 113, the outer peripheral edge of the disk LD being conveyed comes into contact with the contact portion 137a and rotates the second end detection lever 137. The two-end detection lever 137 is pressed and meshed with the gear 138. Thereafter, similarly to the small-diameter disk SD described above, the rotational power of the motor 123 is transmitted to the first slide member 121 on the left side through the gear 138, and the first and second slide members 121 and 122 are located on the innermost side of the chassis 101. The movement starts from the backward position to the forward position. Further, when the disk LD is aligned with the turntable 113, the rotation of the roller 104 is stopped.

  After the disk D (disk SD or disk LD) is aligned with the turntable 113 in this way, when the rotational power of the motor 123 is transmitted to the first slide member 121 on the left side, as described above. Since the movement of the first slide member 121 is transmitted to the second slide member 122 via the link mechanism 125 (the first link lever 126 and the second link lever 127), the left and right slide members 121, 122 move forward from the retracted position. It moves synchronously in the direction of arrow E in FIG. 29 with almost no phase shift to the position.

While the first and second slide members 121 and 122 move from the retracted position of FIG. 31 to the position shown in FIG. 32, both ends of the roller 104 move from the upper position of the cam grooves 121a and 122a to the lower position. Each drive pin 103c of the member 103 moves from the middle position of the cam grooves 121b and 122b and the cam grooves 121c and 122c to the middle position of the inclined portion through the lower position. As a result, the guide member 103 once further descends from the lowered position to the lowest position and then rises again to return to the lowered position, and the roller 104 moves to the lowered position and separates from the lower surface of the disk D. Further, the lock pin 109a moves in the cam groove 121d, but the pin 128a of the lock lever 128 moves in a parallel portion of the cam groove 121e, so that the lock pin 109a remains engaged with the lock lever 128. Similarly, since the second slide member 122 is moved within a range that does not change the posture of the link arm 130, the lock slide member 129 remains stopped, and thus the lock pin 109b is also locked to the lock hole 129a of the lock slide member 129. In addition, since the lock pin (not shown) on the lower surface of the drive chassis 109 is also locked to the lock arm 131a of the center lock lever 131, the drive unit 108 is fixedly supported by the chassis 101. Maintain state. On the other hand, when the protrusion 122d of the second slide member 122 moves forward, the drive arm 116 moves forward by a predetermined distance by the urging force of the spring 117 while the engagement protrusion 116a of the drive arm 116 is in contact with the protrusion 122d. For this reason, the drive pins 114 b and 114 b of the arm clamp 114 descend along the cam holes 116 b and 116 b of the drive arm 116. At the same time, as the first slide member 121 advances, the pressing piece 121j is separated from the protruding piece of the arm clamp 114. Therefore, the arm clamp 114 is lowered in the direction approaching the drive chassis 109. As a result, the clamper 115 supported by the arm clamp 114 approaches the turntable 113, and the periphery of the center hole of the disk D is chucked between the turntable 113 and the clamper 115. The guide member 103 is also in contact with the upper surface of the disk D together with the clamper 115 by the cam shape of the cam grooves 121b and 121c and the cam grooves 122b and 122c until the disk D is placed on the turntable 113 from the conveying height. To descend to
The disk D aligned by the positioning members 118 and 119 can be reliably chucked between the turntable 113 and the clamper 115. Further, the restricting arms 118c and 119c of the positioning members 118 and 119 are deformed by their own elasticity while elastically contacting the lower surface of the descending arm clamp 114.

  As is clear from the above description, when the first and second slide members 121 and 122 are moved to the positions shown in FIG. 32, the drive unit is chucked (clamped) between the turntable 113 and the clamper 115. 108 is fixedly locked to the chassis 101, and this position is referred to as a half-lock position in the following description. It should be noted that both slide members 121 and 122 move back and forth without stopping at the half-lock position under normal disk player usage conditions (non-high temperature environment), and the slide members 121 and 122 allow the clamp mechanism and the drive lock mechanism to move forward and backward. Can be switched.

  While the first and second slide members 121 and 122 are moved from the half-lock position shown in FIG. 32 to the forward most advanced position of the chassis 101 as shown in FIG. 33, both ends of the roller 104 have cam grooves 121a, The drive pin 103c of the guide member 103 moves from the middle position of the inclined portions of the cam grooves 121b and 122b and the cam grooves 121c and 122c to the upper position. As a result, the guide member 103 moves from the lowered position to the raised position and further moves away from the upper surface of the disk D, and the roller 104 is also held at the lowered position separated from the lower surface of the disk D. A large space that does not hinder the rotation of the disk D is secured between the two. Further, the lock pin 109a relatively moves to a position where it is disengaged from the cam groove 121d, the pin 128a moves from the parallel portion of the cam groove 121e to the inclined portion, and the lock lever 128 rotates. Is released. Further, as the second slide member 122 moves from the position shown in FIG. 32 to the position shown in FIG. 33, the link arm 130 rotates and the lock slide member 129 moves to the back side of the chassis 101. The lock pin 109b is unlocked by 129, and at the same time, the center lock lever 131 is largely rotated in conjunction with the first link lever 126 (see FIG. 30). The lock is also released. As a result, the drive chassis 109 is elastically supported by the chassis 101 by the damper member 110 and the like, and the drive unit 108 is switched from the locked state to the unlocked state.

  As shown in FIG. 45, in this play state, the spindle motor 112 is driven to rotate and the optical pickup 111 is caused to emit light (S-10), and then the disk D that rotates the optical pickup 111 is rotated. Is transferred in the radial direction, a play operation for recording and / or reproducing information on the disk D is executed (S-11). During the play operation, the temperature sensor 134 continues to monitor the internal temperature of the apparatus main body (S-12), and when the temperature detected by the temperature sensor 134 is lower than a predetermined temperature (for example, 85 degrees), (S-11) ) To continue playing in vibration isolation mode. On the other hand, if the temperature sensor 134 detects a temperature higher than the predetermined temperature in (S-12), the spindle motor 112 stops rotating and the light emitting operation of the optical pickup 111 is stopped (S-13). ), While the disk D is chucked, the drive unit 108 is shifted to the half-lock position where it is locked (S-14). In this case, when both slide members 121 and 122 move from the retracted position in FIG. 31 to the half-lock position in FIG. 32, the first drive portion 121f of the first slide member 121 contacts the actuator portion 132a as shown in FIG. If the motor 123 is stopped based on the operation signal of the first detection switch 132 in order to contact and turn on the first detection switch 132, the slide members 121 and 122 can be reliably stopped at the half-lock position. it can. As described above, when the temperature inside the apparatus main body becomes a high temperature environment due to the light emitting operation of the optical pickup 111, the drive unit 108 shifts to the half-lock position and enters the locked state. It is prevented.

  Thereafter, the temperature sensor 134 continues to monitor the internal temperature of the apparatus main body (S-15). If the temperature detected by the temperature sensor 134 is higher than the predetermined temperature, the process returns to (S-13) and (S-14). Although the state is maintained, when the temperature detected by the temperature sensor 134 is lower than the predetermined temperature, the drive unit 108 stopped at the half-lock position is switched to the vibration isolation mode (unlocked state) (S-16). Returning to (S-10), the play operation is executed again. That is, by moving both slide members 121 and 122 from the half-lock position of FIG. 32 to the position shown in FIG. 33, the drive unit 108 is unlocked by the chassis 100 via the damper member 110 and the like. Thus, after the drive unit 108 is shifted to the image stabilization mode, the reproduction operation of the disk D is automatically executed again.

  Note that when the slide members 121 and 122 are ejected at the farthest rearward position of the chassis 101, the second drive unit 121g of the first slide member 121 is an actuator of the second detection switch 133 as shown in FIG. When the two slide members 121 and 122 are moved to the forward most advanced position of the chassis 101 and are in a play state, as shown in FIG. 36, the second drive unit 121g is moved to the actuator unit 133a. The second detection switch 133 is turned on upon contact. Therefore, if the rotation of the motor 123 is stopped using the signal output from the second detection switch 133 as a load end signal, the slide members 121 and 122 are stopped at the play position where they have moved to the most advanced position of the chassis 101. To do. Further, when the disc D that has been played back is ejected to the outside of the main body of the apparatus, when an unillustrated eject button is operated, the motor 123 starts to rotate in the reverse direction and the reverse operation is performed. The 1st and 2nd slide members 121 and 122 move back from the advance position, and return to the retreat position shown in FIG.

  As described above, the in-vehicle disc player according to the present embodiment is configured so that the drive unit 108 can be locked while chucking the disc D by stopping both the slide members 121 and 122 at the half-lock position, When the temperature sensor 134 detects a high temperature equal to or higher than a predetermined temperature during a play operation in which an arbitrary disk D is automatically conveyed to a play position and information is reproduced, the spindle motor 112 drives the rotation of the turntable 113. Since the drive unit 108 is switched from the anti-vibration mode to the locked state while the disk D is chucked by stopping the light emission operation of the optical pickup 111 and the optical pickup 111 from the high temperature. Not only can it be reliably protected, While using superior damper member 110 to vibration isolation characteristics under temperature and low temperature environment, it is possible to prevent breakage of the damper member 110 in a high temperature environment. When the high temperature detection by the temperature sensor 134 is released, the rotational drive of the spindle motor 112 and the light emission operation of the optical pickup 111 are resumed, and the drive unit 108 is switched to the image stabilization mode by shifting from the half-lock position. Since the play operation is resumed, it is possible to automatically return to the play operation using the temperature detected by the temperature sensor 134 as a trigger.

It is sectional drawing which abbreviate | omits and shows the internal mechanism of the changer type disc apparatus which concerns on 1st Example of this invention. It is a perspective view which shows the internal mechanism of a 1st chassis. It is explanatory drawing which shows the loading start state of a disk. It is explanatory drawing which shows the storage state of a disk. It is explanatory drawing which shows the drawing-out state of a disk. It is explanatory drawing which shows the play state of a disc. It is a side view of a feed screw member. It is a perspective view of a stocker. It is a perspective view of the 1st press member. It is explanatory drawing of a control board. It is a top view which shows the retracted position of a drive unit. It is a top view which shows the drive position of a drive unit. It is explanatory drawing which shows the press-contact cancellation | release state of a 1st press member and a disc. It is explanatory drawing which shows the press-contact state of a 1st press member and a disk. It is a perspective view which shows the internal mechanism of a 2nd chassis. It is a top view which shows the internal mechanism of a 2nd chassis. It is a top view which abbreviate | omits and shows a part of internal mechanism of a 2nd chassis. It is explanatory drawing which shows the press release state of a 2nd press member and a disc. It is explanatory drawing which shows the press-contact state of a 2nd press member and a disk. It is operation | movement explanatory drawing of a drive drive mechanism. It is explanatory drawing which shows the clamp release state of a drive unit. It is explanatory drawing which shows the clamp state of a drive unit. It is a flowchart which shows the procedure which switches vibration proof mode at the time of play operation | movement. It is a top view of the vehicle-mounted disc player which concerns on 2nd Example of this invention. FIG. 3 is a perspective view showing the disc player with a top chassis removed. FIG. 3 is a perspective view showing the disc player with a top chassis and a guide member removed. It is a disassembled perspective view of a drive unit, a guide member, a slide member, and the like. It is a perspective view of a link mechanism. It is a top view of this link mechanism at the time of ejection. It is a top view of this link mechanism at the time of play. It is explanatory drawing in the eject position of a slide member. It is explanatory drawing in the half lock position of this slide member. It is explanatory drawing in the play position of this slide member. It is a perspective view of this slide member at the time of ejection. It is a perspective view of this slide member in a half lock position. It is a perspective view of this slide member at the time of play. It is a top view of a disk positioning mechanism. It is a front view of the disk positioning mechanism. It is a right view of the disk positioning mechanism. It is a top view of this disk positioning mechanism which shows the mounting state of a small diameter disk. It is a front view of the disk positioning mechanism showing a mounted state of a small-diameter disk. It is a top view of this disk positioning mechanism which shows the mounting state of a large diameter disk. It is a front view of the disk positioning mechanism showing a mounted state of a large diameter disk. It is a top view of the disk positioning mechanism showing the positioning operation of a large diameter disk. It is a flowchart which shows the procedure which switches vibration proof mode at the time of play operation | movement.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing | casing 3 1st chassis 4 2nd chassis 5 Disk conveyance mechanism 6 Disk accommodating part 7 Drive unit 8 Drive drive mechanism 21 Stocker 30 Drive chassis 31 Damper member 33,34 Slide cam plate 61 Spindle motor 62 Turntable 63 Light Pickup 64 Support plate 66 Clamper 70 Temperature sensor 101 Chassis 103 Guide member 104 Roller 108 Drive unit 109 Drive chassis 110 Damper member 111 Optical pickup 112 Spindle motor 113 Turntable 114 Arm clamp 115 Clamper 121, 122 Slide member 134 Temperature sensor

Claims (4)

Reproducing and / or reproducing information to / from a disc selected from any of the discs having a disc storage unit in which a plurality of discs are arranged and held in the thickness direction and at least an optical pickup and a turntable A drive unit that performs recording; a drive drive mechanism that moves the drive unit between a drive position that drives the selected disk and a retracted position that does not drive any of the disks; and the drive unit elastically via a damper A chassis for supporting, a lock mechanism for locking or unlocking the drive unit with respect to the chassis, and a temperature sensor capable of detecting the internal temperature of the chassis,
When the temperature sensor detects a temperature higher than a predetermined temperature during a play operation in which a disk is clamped on the turntable and information is reproduced and / or recorded, the rotation drive of the turntable and the An in-vehicle disk device wherein the locking mechanism switches the drive unit from an unlocked state to a locked state while maintaining the disk clamped state after stopping the light emitting operation of the optical pickup.   2. The device according to claim 1, wherein when the temperature sensor releases detection of a high temperature equal to or higher than the predetermined temperature, the lock mechanism switches the drive unit from the locked state to the unlocked state and automatically returns to the play operation. An in-vehicle disk device characterized by the above. A drive unit having at least a turntable and an optical pickup; a chassis that elastically supports the drive unit via a damper; a clamp mechanism that clamps a disk on the turntable; and the drive unit is locked or unlocked with respect to the chassis. A drive lock mechanism for locking, a switching mechanism for operating the clamp mechanism and the drive lock mechanism, and a temperature sensor capable of detecting the internal temperature of the chassis,
The switching mechanism can be stopped at a half-lock position that maintains the locked state of the drive unit while clamping the disk on the turntable during the switching stage in which the clamp mechanism and the drive lock mechanism are operated. Configure
When the temperature sensor detects a temperature higher than a predetermined temperature during a play operation in which a disk is clamped on the turntable and information is reproduced and / or recorded, the rotation drive of the turntable and the An in-vehicle disk device characterized in that after the light emitting operation of the optical pickup is stopped, the switching mechanism shifts to the half-lock position and the drive lock mechanism is switched from the unlocked state to the locked state.   4. The method according to claim 3, wherein when the temperature sensor cancels the detection of a high temperature equal to or higher than the predetermined temperature, the switching mechanism automatically shifts from the half-lock position and automatically returns to the play operation. In-vehicle disk unit.

Images