JP2012018704A - Disk conveyance device - Google Patents

Abstract

An object of the present invention is to provide a disk transport device capable of preventing damage even if an overload occurs due to a forced insertion of a disk by a user and prevents the gear train from being overloaded.
Drive rollers 6a and 6b that convey the disk while rotating the disk by the driving force of the rollers that are directly abutted and held on both sides of the inserted disk, and roller gears 6e that are provided coaxially with the drive roller. A gear train 8a to 8c that is interposed between 6f and a drive source and transmits the drive force, and gear trains 8a to 8c including the drive rollers 6a and 6b and the roller gears 6e and 6f are rotatably held and formed of a molding material. The roller arms 7a are provided, and the bearings 31, 32 formed on the roller arms 7a and the shafts 34, 35 of the roller gears 6e, 6f are configured to be elastically deformable in a normal direction perpendicular to the axis of the gears. Due to the elastic deformation, the roller gear and the gear train can be disengaged from time to time when the disc is overloaded by insertion.
[Selection] Figure 7

Description

  The present invention relates to a disk transport device including a slot-in type loading mechanism in which a disk is directly inserted and carried while being held by a roller.

  Conventionally, a disk transport device having such a slot-in type loading mechanism is a mechanism for loading a disk into the disk device without using a tray, and the disk inserted in the housing of the disk device is elastically directly by a rubber roller. In this state, the rubber roller is rotated so that the disk is loaded, the entire disk is pulled into the housing, and is mounted at the disk recording / reproducing position. In this slot-in type loading mechanism, a roller that guides the outer peripheral edge of the disc is sandwiched in the radial direction of the disc, and the roller is rotated to convey the disc itself while rotating. Is configured to contact only the peripheral edge of the disk (see, for example, Patent Document 1).

  In a disk transport device having such a slot inloading mechanism, a disk is directly inserted into an insertion port provided in the housing, the disk insertion is detected, a rubber roller is rotated by the detection, and the disk is further inserted. The disk is loaded by bringing the disk into contact with the rotating rubber roller and carrying it in. That is, at the time of insertion, the user directly inserts a disc and directly contacts the rubber roller that holds the disc, thereby detecting and pulling the disc. In this method, since the insertion is directly performed by the user, when the insertion is not clear or when it is inserted suddenly, the insertion is performed with an excessive load, or the insertion cannot be detected or detected. In the case where the drive cannot be performed by, for example, there is a problem that an overload is applied to the rubber roller with which the inserted disk comes into contact, and therefore some means for avoiding an overload is necessary.

  By the way, conventionally, various measures have been taken as an example of avoiding overload in a normal disk loading mechanism. For example, even when the relative position between the tray and the clamper holder is shifted due to backlash or the like, the large gear and the small gear of the gear mechanism that mesh with each other are predetermined by the elastic body so that the tray can be moved with high accuracy. A disk loading mechanism has been proposed that is configured to be relatively rotatable by being biased in the direction (see Patent Document 2). In addition, a driving device and a loading device capable of releasing the locked state have been proposed (see Patent Document 3).

JP 2009-64518 A JP-A 64-30059 Japanese Patent Laid-Open No. 8-338496

  However, the conventional overload avoidance measures are measures against gear backlash and locked state in the drive transmission system such as gears, and measures against overload that occurs in connection with disk insertion by the user. It is not what you did. In particular, in the slot-in type of conveying the disk itself while rotating the disk by sandwiching the disk in the radial direction of the disk by a roller that guides the outer peripheral edge of the disk and rotating the roller, Since the user inserts the disc by directly contacting the disc with the rubber roller, there is a case where the disc is forcibly inserted with a strong pressing force, and the gear is connected to the rubber roller via the roller gear. The problem of damaging and the like also occurred.

  Therefore, the present invention solves the above-described problem, and even if an overload occurs due to a forced insertion by a user, etc., the disk can be blocked and prevented from being damaged without being overloaded to the gear train The object is to provide a transport device.

  In order to achieve the above object, a disk transport apparatus according to the present invention is a slot-in type desk transport apparatus in which a disk is inserted into an insertion port on the front surface of the apparatus main body, and the inserted disk is directly A guide roller that is abutted and held on both sides, and uses one as a drive roller to convey the disk while rotating the drive force; a drive source that transmits the drive force to the drive roller of the guide roller; and the drive roller; A gear train that is interposed between a roller gear provided on the same axis and a drive source and transmits the drive force, and a roller made of a molding material that rotatably holds each of the gear train including the roller gear together with the drive roller. An arm, and the roller arm meshes with the gear train and is coaxial with the drive roller with which the inserted disc is first contacted. The shaft and the bearing part of the roller gear are configured to be elastically deformable in a normal direction perpendicular to the axis of the gear, and when the disk is inserted, an overload directly applied to the guide roller is applied to the shaft and the bearing of the roller gear. It is configured such that the rotational force acting on the drive roller by the insertion of the disk is not transmitted to the gear train by releasing the meshing with the gear meshing with the gear by elastic deformation of the part.

  As a result, even if an overload occurs due to forcible insertion of the disk by the user, etc., the shaft is engaged with the gear by the elastic deformation of the shaft and the bearing portion of the roller gear coaxial with the drive roller to which a load is directly applied via the disk. Since the engagement with the gear is released and the rotational force acting on the drive roller by the insertion of the disk is not transmitted to the gear train, a disk transport device in which an overload is not applied to the gear train is obtained.

  According to the above configuration, even if an overload occurs due to a forced insertion of a disk by the user, etc., a disk transport device can be provided that can prevent this from being damaged by preventing the load from being applied to the gear train. it can.

1 is an external perspective view showing a disk device main body of a disk transport device according to a first embodiment and a disk inserted into the disk device body. Disassembled perspective view showing parts constituting the entire disk device as a unit Top view of the components with the chassis and some components removed, mounted on the mechanical chassis Top view right after inserting the disc with both housings removed Top view in the middle of transporting the disc in the same state Top view of the disc in the same state loaded to a reproducible position Top view of the roller arm and link arm (A) Bottom view of the roller base including the roller base and link arm in a closed state, (b) Bottom view of the roller arm in an opened state The front view which shows the state which removed the 1st housing | casing, the 2nd housing | casing, and the dust-proof cover Top view of the roller arm with the rubber roller and gear attached (A) Perspective view of the roller arm, (b) Perspective view of the roller arm with a rubber roller integrally provided with the roller gear attached thereto Sectional drawing which shows the meshing state of the roller gear integral with the rubber roller and the gear Explanatory drawing of the action immediately after inserting the disc Explanatory drawing when an overload acts when inserting the disc

(Embodiment 1)
Hereinafter, a first embodiment of the disk transport device of the present invention will be described in detail with reference to the drawings. FIG. 1 is an external perspective view showing a disk device main body having a disk conveying device of the present invention and a disk inserted therein, and FIG. 2 is an exploded perspective view showing parts constituting the entire disk device as a unit. Here, FIG. 1 shows an example of horizontal arrangement, and FIG. 2 is an exploded perspective view of horizontal arrangement, but the apparatus itself can be adapted to both vertical and horizontal arrangements. This will be described using expressions such as “left and right”, “up and down”, and “lifting”.

  In FIG. 1, reference numeral 1 denotes a first casing as an upper cover constituting the apparatus main body, and 2 denotes a second casing as the lower cover. Is provided with an opening 1 a serving as a disc insertion opening, and the opening 1 a is closed by a dust-proof cover 3. As shown in FIG. 1, by directly inserting the disc 100 while elastically deforming the dustproof cover 3 in the opening 1a, the disc 100 can be recorded / reproduced by the action of the disc transport device configured therein. It is conveyed to a predetermined position. Here, the illustrated disk 100 is a 12 cm disk which is a large diameter disk, and the disk 200 is an 8 cm disk which is a small diameter disk.

  As shown in FIG. 2, the disk device as a whole is composed of the disk rotation driving / reproducing device and the disk transport device included in the above-described housings 1 and 2, and the related mechanical components. The dust-proof cover 3 is disposed inside the first casing 1 so as to close the opening 1a. The dust-proof cover 3 is provided with an elastic material sheet 3a such as felt, and the disc 100 is inserted almost at the center thereof. A slit 3b is formed for passing through. An upper guide 4 that guides the upper side of the disk 100 (200) to be inserted and a guide portion 5a of the roller base 5 that guides the lower side are provided at positions facing the inside of the apparatus of the dust cover 3. The roller base 5 rotatably holds a pair of roller arms 7a and 7b having rubber rollers 6a to 6d serving as driving force transmission means and a guide for conveying the inserted disc 100 (200) into the apparatus. . The pair of right rubber rollers 6a and 6b are rotatably provided on the roller arm 7a, and the pair of left rubber rollers 6c and 6d are fixed to the roller arm 7b. The driving force of the motor 9 as the driving source is applied to the roller gears 6e and 6f provided integrally with the rotatable rubber rollers 6a and 6b via the gear train 8 including the gears 8a to 8c provided on the roller arm 7a. Communicated. The driving force is transmitted from the gear 10a to the gear 8c via the gear train 10 including the worm gear 9a and the gears 10a to 10e. The transmission is transmitted to the gears 10b and 10c by the rotation of the clutch plate 11. Is switched by disconnecting the mesh. At that time, the driving force of the motor 9 is transmitted only from the gear 10d to the gear 10f, and drives a slide cam 16 described later via a pinion 10g formed integrally with the gear 10f. Such a conveying device is configured to be held by the mechanical chassis 12 so as to be rotatable or slidable as required.

  As shown in FIG. 2, the disk device includes a turntable 13 on which a disk 100 (200) is mounted by integrally forming a spindle motor, and a traverse 15 having an optical pickup 14. The traverse 15 can be moved up and down and is supported in a floating manner so that the inserted disc can be mounted and played back.

  A slide cam 16 is slidably provided on the right side of the mechanical chassis 12 and is slidable on the left side of the mechanical chassis 12 via a link arm 17 rotatably supported on the lower portion of the mechanical chassis 12. The slide cam 18 is connected to the slide cam 18, and the slide cam 16 and the slide cam 18 are configured to slide in opposite directions in synchronization with each other. Reference numeral 19 denotes an intermediate chassis that supports one of the traverses 15. The intermediate chassis 19 is rotatably provided on the mechanical chassis 12 with pins 19 a and 19 b, and pins 19 c and 19 c that are engaged with elevating cams 16 a and 18 b formed on the slide cams 16 and 18. 19d is provided. With this configuration, by sliding the slide cams 16 and 18, the intermediate chassis 19 is moved up and down by rotating the pins 19c and 19d up and down around the pins 19a and 19b.

  The traverse 15 is fixed to the front of the intermediate chassis 19 via floating rubbers 20a and 20b, respectively, on the left and right sides, and the rear part is fixed to the mechanical chassis 12 via floating rubbers 20c and 20d. With this configuration, the traverse 15 rotates around the floating rubbers 20d and 20c as the intermediate chassis 19 rotates in the vertical direction by sliding the slide cams 16 and 18, and accordingly the turntable 13 is rotated. The part can be moved up and down.

  Reference numeral 21 denotes a clamper that holds a mounted disc, and is provided to clamp the disc 100 (200) to the turntable 13 at an upper portion facing the turntable 13. The turntable 13 is provided with a magnet, and the clamper 21 is pulled by the turntable 13 by a magnetic force by an iron yoke 21a provided on the clamper 21 so as to sandwich the disk 100 (200). The clamper 21 is attached / detached so as to face the turntable 13 through an opening 22a formed in an upper base 22 serving as an upper chassis disposed so as to cover the upper portion of the traverse 15 in the housing 1. The left and right clamper lifters 23a and 23b provided on the upper base 22 are attached / detached by movement.

  The upper base 22 is provided with a centering member 24 for centering the disk and a trigger lever 25 for detecting the transport of the disk and switching to the raising / lowering operation of the traverse 15 on the lower surface side of the upper base 22 so as to be slidable and rotatable. It has been. Further, a guide lever 26 for stably holding the inserted disc between the turntable 13 and the clamper 21 is rotatably held. Here, the upper base 22 is fixed to the mechanical chassis 12, and the mechanical chassis 12 is sandwiched and fixed between the housings 1 and 2.

  2, 27a is a detection switch for detecting when a disk is inserted into the disk insertion opening 1a, 27b is a detection switch for detecting the end of loading when the disk is ejected, and 27c is a position where the disk can be reproduced. This is a detection switch that is detected when transported to the substrate 27 and is provided on the substrate 27 at a position facing the roller arm 7b (see FIG. 3). Reference numerals 28a and 28b denote link arms rotatably provided on the roller base 5. The roller arms 7a and 7b are provided on the roller base 5 so as to rotate synchronously. Reference numeral 29 denotes a disk detection lever provided on the roller arm 7b, which operates the detection switch 27a.

  Next, FIG. 3 will be described. FIG. 3 shows a mechanical chassis in which the components of the entire structure shown in FIG. 2 excluding the casings 1 and 2 and the roller base 5 including the roller arms 7a and 7b and the upper base 22 and the components are removed. The top view of the state attached to 12 is shown.

  As shown in FIG. 3, the turntable 13 and the optical pickup 14 are arranged on the traverse 15 in the approximate center of the disk device, and the intermediate chassis 19 is arranged so as to place the turntable 13 side of the traverse 15. . A slide cam 16 on the right side of the intermediate chassis 19 and a slide cam 18 on the left side are arranged on both sides of the mechanical chassis 12 so as to be slidable in the same front-rear direction (arrow B and B direction) as the disk transport direction. In the initial state, the slide cam 16 is urged in the direction of arrow A and the slide cam 18 is urged in the direction of arrow B via the link arm 17 by a spring 16 j stretched between the mechanical chassis 12. The intermediate chassis 19 engages left and right pins 19c and 19d with the lift cams 16a and 18a formed on the slide cams 16 and 18, and the left and right pins 19a and 19b are connected to bearing portions 12a and 12b formed on the mechanical chassis 12. Holds freely. With this configuration, by sliding the slide cams 16 and 18, the intermediate chassis 19 is moved up and down by rotating the pins 19c and 19d up and down around the pins 19a and 19b.

  Here, sliding of the slide cams 16 and 18 causes the trigger lever 25 to be rotated by the conveyance force by inserting a disk, which will be described later, and the slide cam 16 is slightly slid in the direction of the arrow B, whereby the rack 30 is moved to the pinion 10g. By engaging with each other, the driving force of the motor 9 can be performed by rotating a pinion 10g coaxial with the gear 10f via the worm gear 9a and the gears 10e-10d-10f. With the rotation of the pinion 10g, the slide cam 16 is further slid in the direction indicated by the arrow B through the meshing rack 30, and the slide cam 18 is moved in the direction indicated by the arrow A via the link arm 17 along with this sliding. It has become.

  That is, when the disc is conveyed by driving the motor 9, and the disc is conveyed to a reproducible position, the slide cams 16 and 18 are slid by the action of the trigger lever 25 and the transmission switching of the driving force of the motor 9, The intermediate chassis 19 and the traverse 15 are moved up and down, a disk is mounted on the turntable 13, and the clamper 21 is pulled by the magnetic force by the turntable 13 so that the disk is sandwiched and held, so that a playable state can be achieved.

  Next, a description will be given of the configuration of a slot-in type transport device that transports a disk to a reproducible position. FIGS. 4 to 6 are views showing a state in which both the casings 1 and 2 and the upper base 22 including the upper guide 4 are removed in order to show the state of transporting the disk.

  FIG. 4 shows a state immediately after the large-diameter disc 100 is inserted into the disc insertion slot. At this time, the disc 100 is in contact with the pair of right rubber rollers 6a and 6b and the pair of left rubber rollers 6c and 6d. When the disk detection lever 29 provided on the arm 7b is rotated by the disk 100, insertion of the disk 100 is detected by operating the detection switch 27a. In this state, the motor 9 starts operating by the operation of the detection switch 27a, and the rubber rollers 6a and 6b are driven via the gear train 10 and the gear train 8, and the rubber rollers 6a and 6b as the drive rollers are driven. Is rotated in the direction of the arrow C to rotate the rubber roller 6d by the rotational driving force and frictional force of the rubber roller 6b and the frictional force of one of the non-rotating rubber rollers 6c and 6d. As a center, the disk 100 rotates in the direction of the arrow D.

  By rotating around the rubber roller 6d by the rotational driving force of the rubber roller 6b, the disk 100 is conveyed in the direction of the arrow A. By this movement, the space between the rubber rollers 6b and 6d is expanded by the disk 100, so a pair of roller arms 7a. , 7b rotate in the direction of arrow E and arrow F, that is, in the opening direction. As described above, when the roller arms 7a and 7b are opened, the rubber rollers 6a and 6c are once separated from the periphery of the disk 100, but are brought into contact with each other in the state shown in FIG.

  FIG. 5 shows a state where all of the rubber rollers 6a, 6b, 6c and 6d are in contact with the disk 100, and is conveyed from the disk position 100A immediately after insertion in FIG. 4 to a reproducible disk position 100C (FIG. 6). In the process, the disk position 100B shown in FIG. 5 is a position where the rotational driving of the disk 100 is switched from the driving by the rubber rollers 6b and 6d to the driving by the rubber rollers 6a and 6c. From this position to the disk position 100C, the disk 100 is further conveyed in the direction of the arrow B while rotating in the direction of the arrow D around the position of the rubber roller 6c by the rotational driving force of the rubber roller 6a.

  When the disc 100 is transported, it is transported while its thickness direction is held by the guide lever 26 shown in FIG. 2, and is transported while its position in the left-right direction is determined by the centering member 24. Then, when the disc 100 is transported to the position shown in FIG. 6, that is, the disc reproducible position facing the turntable 13, the trigger lever 25 detects the transport completion position of the disc 100, that is, the aforementioned disc position 100C. .

  Next, the time when the disc 100 is ejected will be described. The disc 100 can be ejected by releasing the clamped state of the disc 100 in a reproducible state and lowering the traverse 15 and holding it again by the rubber rollers 6a and 6c. A driving force opposite to that during insertion and conveyance is transmitted to the rubber rollers 6a and 6b by the motor 9, and driving by the rubber rollers 6a and 6c is performed by a driving force in the direction opposite to the arrow C direction shown in FIGS. To start discharging. The disc 100 is transported while being rotated in the direction opposite to the direction indicated by the arrow D in FIGS. From the disk position 100C to the disk position 100B shown in FIG. 5, the disk 100 is conveyed while rotating in the direction opposite to the direction of the arrow D around the position of the rubber roller 6c by the rotational driving force of the rubber roller 6a. , 6b, 6c and 6d are in contact with the disk 100. From the state shown in FIG. 5 to FIG. 4, the sheet is conveyed by driving by the rubber rollers 6b and 6d in the same manner, and the state shown in FIG. FIG. 4 shows a state in which the disc 100 can be taken out by the user's fingers when unloaded. In this state, the disc 100 does not pop out due to the clamping and frictional force by the rubber rollers 6a to 6d and the frictional force due to the elasticity of the dustproof cover 3. It is supposed to be retained.

  Here, the roller arms 7a and 7b will be described with reference to FIGS. 7 and 8. FIG. 7 is a top view showing only the roller arm and the link arm, and FIG. 8 (a) includes the roller base and the link arm. The bottom view of the state where the roller arm is closed, and FIG. 7B shows the bottom view of the state where the roller arm is opened. The roller arms 7a and 7b are provided so as to be rotated with respect to the roller base 5 around the rotation shaft portions 7a-1 and 7b-1 in synchronization with the link arms 28a and 28b. The rubber rollers 6a to 6d can be brought into contact with the disk 100 shown in FIGS. For this reason, the roller arms 7a and 7b are provided with torsion coil springs 7a-2 for urging in the directions opposite to the directions of the arrow H and the arrow F, which are expanded by the disk 100, ie, the arrow G and arrow H directions. 7b-2 is provided. With this urging force, the disc 100 is sandwiched between the rubber rollers 6a, 6b and 6c, 6d, and can be conveyed while being always in contact.

  Further, as shown in FIG. 7, the rotatable rubber rollers 6a and 6b provided on the roller arm 7a have the roller gears 6e and 6f provided integrally as described above, and with respect to the roller gears 6e and 6f, Of the gear train 8 including the gears 8a to 8c provided on the roller arm 7a, the gear 8a is engaged with the roller gear 6e, and the gear 8c is engaged with the roller gear 6f. Here, as shown in FIG. 2 described above, the gear 10a is formed such that the gears are integrally formed up and down, the gear 10b of the gear train 10 meshes with the lower gear, and the upper gear meshes with the gear 8c. . Then, the driving force of the motor 9 as a driving source is transmitted from the gear train 10 to the gear train 8 so as to be transmitted to the rubber rollers 6a and 6b.

  Next, FIG. 9 is a front view showing a state in which the first housing 1, the second housing 2, and the dust cover 3 are removed, and an upper guide 4 and a guide portion 5 a formed on the roller base 5. Thus, the disc insertion slot 300 is configured. As is apparent from the figure, the upper guide 4 and the guide portion 5a of the roller base 5 constituting the insertion slot 300 into which the disc is inserted constitute a guide surface that is curved in a gentle bow shape in the vertical direction. A substantially central portion between the two is used as a conveyance center of the inserted disc. The disk contact portions of the rubber rollers 6a to 6d described above are located on the same plane of the transport center, the disk detection lever 29 faces, and the disk restriction members 41 to 45 for regulating the thickness direction of the inserted disk. The disc can be inserted while being guided by the upper guide 4 and the guide portion 5a of the roller base 5. In the state shown in FIG. 9, the top of the turntable 13 is positioned below so as not to interfere with the disk insertion.

  Next, based on FIGS. 10-12, the detailed structure is demonstrated about the pair of rubber rollers 6a and 6b of the right side, and the roller arm 7a which provided this.

  FIG. 10 shows only the roller arm 7a with the rubber roller and gear shown in FIG. 7 attached, and as described above, the disc 100 inserted into the disc insertion slot 300 is directly applied when inserted. The rubber rollers 6a and 6b that are in contact with each other are always in mesh with the gear train 8 and the gear train 10 via roller gears 6e and 6f provided integrally.

  FIG. 11 is a perspective view showing the configuration of the roller arm 7a. FIG. 11A shows a state in which the rubber rollers 6a and 6b and the gears 8a to 8c integrally provided with the roller gears 6e and 6f are removed, and FIG. 11B shows the gear 8a. The state which removed only-8c is shown. The roller arm 7a includes a bearing portion 31 of a rubber roller 6a integrally provided with a roller gear 6e, a bearing portion 32 of a rubber roller 6b integrally provided with a roller gear 6f, and shaft portions 8a-1, 8b-1, 8c of gears 8a to 8c. -1, an elastic piece 33 formed with a slit 33a for allowing the shaft portion 8c-1 to be elastically deformed, a through hole 10a-1 of the gear 10a (also serving as a fitting hole for the rotating shaft portion 7a-1), and the like. It is composed. In the bearing portion 31, an upper bearing 31a and a lower bearing 31b into which the shaft of the rubber roller 6a is fitted, a notch hole 31c formed in the roller arm 7a to form the lower bearing 31b, the disk restricting member 43 described above. , 44 are configured. The other bearing portion 32 has an upper bearing 32a and a lower bearing 32b into which the shaft of the rubber roller 6b is fitted, a notch hole 32c formed in the roller arm 7a to form the lower bearing 32b, and the above-described disk restriction. A member 45 is configured. Then, as shown in FIG. 6B, the shaft 34 of the rubber roller 6a in which the roller gear 6e is integrally provided on the upper bearing 31a and the lower bearing 31b of the bearing portion 31 is connected to the upper bearing 32a and the lower bearing of the bearing portion 32. The shaft 35 of the rubber roller 6b provided integrally with the roller gear 6f is rotatably fitted to the shaft 32b.

  Next, the configuration of the rubber roller 6a integrally provided with the roller gear 6e and the rubber roller 6b provided integrally with the roller gear 6f will be described. Here, based on FIG. 12, the configuration of the rubber roller 6b integrally provided with the roller gear 6f is described. explain. FIG. 12 is a cross-sectional view taken along a line connecting the shaft center portion of the rubber roller 6b and the shaft center portion of the gear 8c, and shows a state immediately after the disk 100 is inserted and brought into contact with the rubber roller 6b.

  In FIG. 12, the shaft 35 forms a rotating shaft portion 35a whose both ends are fitted to the above-described upper bearing 32a and lower bearing 32b, and has a two-stage configuration with a small diameter and a large diameter from one end near the upper end. A cup-shaped portion is formed, a rubber roller 6b is fitted to the small diameter portion 35b, and a roller gear 6f is integrally formed at the lower end of the large diameter portion 35c. That is, a member constituting the roller gear 6f constitutes a fitting portion (small diameter portion 35b) of the rotation shaft portion 35a and the rubber roller 6b, and an internal space between the rotation shaft portion 35a so that the member can be deformed. 35d and 35e are formed and it is set as the cup-shaped structure which open | released the downward direction. Since the rubber roller 6b is made of a softer rubber material than the material constituting the shaft 35, the rubber roller 6b can be rotated in close contact with the small-diameter portion 35b of the shaft 35, and the rotation of the gear 8c causes the rubber roller 6b to rotate. The roller gear 6f rotates simultaneously with the rotation. Here, since the shaft 35 on which the roller gear 6f is configured is made of an elastically deformable resin molding material, the elastic deformation is caused between the rotating shaft portion 35a and the roller gear 6f formed on the cup-shaped large-diameter portion 35c. It is possible. Further, since the roller arm 7a is also made of an elastically deformable resin molding material, the elastic piece 33 formed with the bearing portion 32 and the slit 33a is also made deformable.

  Here, as shown in FIG. 13, the operation when the disc 100 is inserted into the disc insertion slot and brought into contact with the pair of right rubber rollers 6a and 6b and the pair of left rubber rollers 6c and 6d will be described. In this state, the disk 9 is normally operated by rotating the disk detection lever 29 by the disk 100 and operating the detection switch 27a, and the rubber rollers 6a and 6b via the gear train 10 and the gear train 8 are started. And the disk 100 is transported by the above-described action.

  However, if the disk 100 is inserted too rapidly or the user inserts it more than necessary and the drive by the motor 9 is not in time, or if the power switch is not turned on, the motor 9 has some trouble. If the drive system does not operate, troubles due to the following actions will occur if no allowance is provided. That is, when the disc 100 is inserted and the disc 100 is further pushed in the direction of the arrow A in the state shown in FIG. 13 in contact with the pair of right rubber rollers 6a and 6b and the pair of left rubber rollers 6c and 6d, the disc 100 is The rubber roller 6c, 6d, which does not rotate, rotates in the direction of the arrow D with the rubber roller 6d as the center of rotation. As the disk 100 rotates, the rubber rollers 6 a and 6 b that are in frictional contact with the disk 100 are rotated in the direction of the arrow C by the insertion force of the disk 100, not by the driving force of the motor 9. When the rotational force in the direction of the arrow C is applied, the rotational force is transmitted to the gear train 8 via the roller gears 6e and 6f. At this time, the motor 9 is not in operation, so the locked gear. This acts as a force to rotate the row 8 and the gear row 10. For this reason, the further pressing of the disk 100 causes a trouble that causes the gear train 8 or the gear train 10 to be damaged or the rubber roller 6b to be damaged.

  It is the configuration shown in FIGS. 10 to 12 described above to prevent this trouble from occurring, and the operation thereof will be described with reference to FIG.

  FIG. 14 is a cross-sectional view of FIG. 12, and the disk 100 is forcibly further pushed in the direction of the rubber roller 6b, whereby the bearing portion 32, the elastic piece 33 and the shaft 35 of the shaft portion 8c-1 are elastically deformed. Thus, the roller gear 6f and the gear 8c are separated.

  That is, as shown in FIG. 14, when the small-diameter portion 35b is pressed against the disc 100 via the rubber roller 6b, the cup-shaped portion on the side pressed against the rotating shaft portion 35a is deformed. The part 32 itself is also deformed. The degree of deformation differs depending on the pressing force for pushing the disc 100, but the pressing force acts as the rotational force of the roller gear 6f including the rubber roller 6b and the shaft 35 as described above. For this reason, when the pressing force is small, the deformation amount is small, and the roller gear 6f and the gear 8c remain engaged with each other and the disk 100 does not rotate. However, when the pressing force is further applied, the roller gear 6f and the gear 8c are engaged. The rubber roller 6b and the roller gear 6f are rotated in the state shown in FIG. 14 by gradually becoming shallower and causing deformation of the elastic piece 33 constituting the shaft portion 8c-1 of the gear 8c, and disengagement of both. As a result of this action, even when the disk 100 is forcibly inserted and the gear train 8 and the gear train 10 are locked, the gear train 8 or the gear train 10 is damaged due to an abnormal overload. Can be prevented.

  Here, the load force for separating the roller gear 6f and the gear 8c due to the elastic deformation of the bearing portion 32, the elastic piece 33 and the shaft 35 of the shaft portion 8c-1, and the like is that the gear train 8 and the gear train 10 or the rubber roller 6b. It is set as appropriate according to the limit load force to break.

  As described above, the disk transport apparatus according to the present embodiment is a slot-in type desk transport apparatus in which a disk is inserted into an insertion port on the front surface of the apparatus main body, and the inserted disk is directly inserted. A guide roller that is abutted and held on both sides, and uses one as a drive roller to convey the disk while rotating the drive force; a drive source that transmits the drive force to the drive roller of the guide roller; and the drive roller; A gear train that is interposed between a roller gear provided on the same axis and a drive source and transmits the drive force, and a roller made of a molding material that rotatably holds each of the gear train including the roller gear together with the drive roller. An arm, and the roller arm meshes with the gear train and is coaxial with the drive roller with which the inserted disc is first contacted. The shaft and the bearing part of the roller gear are configured to be elastically deformable in a normal direction perpendicular to the axis of the gear, and when the disk is inserted, an overload directly applied to the guide roller is applied to the shaft and the bearing of the roller gear. It is configured so that the rotational force acting on the drive roller by inserting the disc is not transmitted to the gear train by releasing the meshing with the gear that meshes with the gear by elastic deformation of the part, such as forced insertion by the user Even if an overload occurs due to the elastic deformation of the drive roller and the shaft of the coaxial roller gear and the bearing that are directly loaded via the disk, the meshing with the gear that meshes with the gear is disengaged and the disk is inserted. Since the rotational force acting on the drive roller is not transmitted to the gear train, the gear train is not overloaded.

  Further, in the disk transport device of the present embodiment, the roller gear has a cup shape with a gap between the roller gear and the roller gear itself and is configured to be elastically deformable. Has the effect of being.

  Further, in the disk transport device of the present embodiment, the elastic support portion of the shaft portion of the gear is formed by a slit in the bearing portion of at least one of the gear trains that transmits the driving force to the roller gear. The portion is configured to be elastically deformable, and has a function of obtaining a synergistic effect with the elastic deformation of the bearing portion with a simple configuration.

  The disk device of the present invention is a slot-in type disk transport device in which both sides are held and carried by rollers that guide the peripheral edge of the disk, and in particular, a disk-shaped recording medium such as a CD, DVD, or BD. The present invention is useful for a disk transport apparatus having a slot-in loading mechanism for loading into an apparatus without using a tray.

6a-6d Rubber roller 6e, 6f Roller gear 7a, 7b Roller arm 8a-8c Gear 10a-10f Gear 31, 32 Bearing part 33 Elastic piece 34 Shaft 34 of rubber roller 6a
35 Shaft 35 of rubber roller 6b

Claims (3)

It is a slot-in type desk transport device in which a disc is inserted into an insertion port on the front of the device body and carried in,
A guide roller that holds the inserted disc in direct contact and holds it on both sides, and transports the disc while rotating the disc with its driving force as one of the driving rollers;
A driving source for transmitting a driving force to the driving roller of the guide roller;
A gear train that is interposed between a roller gear provided coaxially with the drive roller and a drive source and transmits the drive force;
Each of the gear train including the roller gear together with the driving roller is rotatably held, and a roller arm made of a molding material,
The roller arm meshes with the gear train and elastically rotates the roller gear shaft and the bearing portion coaxial with the drive roller with which the inserted disk is first contacted in a normal direction perpendicular to the axis of the gear. Configured to be deformable,
When the disk is inserted, the overload directly applied to the guide roller is released from the meshing with the gear that meshes with the gear by elastic deformation of the roller gear shaft and the bearing portion, and acts on the driving roller by inserting the disk. The disc transport device is configured so that the rotating force is not transmitted to the gear train. 2. The disk transport apparatus according to claim 1, wherein the roller gear has a cup shape with a gap between the roller gear and a shaft, and the roller gear itself is configured to be elastically deformable. 3. A bearing portion of at least one gear of a gear train that transmits a driving force to the roller gear, wherein an elastic support portion of the shaft portion of the gear is formed by a slit, and the shaft portion can be elastically deformed. Disc transport device according to claim 1.