JP2007323727A - In-car disk player - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an "in-car disk player" capable of surely preventing the occurrence of the rattle noise due to rattling of an auxiliary roller with simple configuration. <P>SOLUTION: The in-car disk player is equipped with a disk conveyance mechanism comprising a guide 6 disposed on an upper side of a base member 1, a roller bracket 9 elastically energized in a direction approaching the guide member 6, a roller 8 freely rotatably supported at the roller bracket 9, etc., and is adapted to make possible to grasp the disk D between the guide member and the roller 8 by bringing the roller bracket 9 in a standby state closer to the guide member 6. A pair of auxiliary rollers 7 that can abut on the outer peripheral edge of the disk D during the course of the conveyance on both side parts of the guide member 6 is freely rotatably supported, and the outer peripheral surface of the roller 8 in the standby state is brought into press contact with the outer peripheral surface of the auxiliary roller 7, and thereby the rattling of the auxiliary roller 7 in the standby state is prevented. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an in-vehicle disc player that records and / or reproduces information on a disc such as a CD or a DVD, and in particular, automatically conveys the disc by rotationally driving a roller sandwiched between the disc and a guide member. The present invention relates to a slot-in type in-vehicle disc player.

  In general, in an in-vehicle disc player, a synthetic resin guide member fixed to an upper end portion of a chassis, a roller bracket elastically biased in a direction close to the lower surface of the guide member, and the roller bracket are rotatable. And a rubber roller supported on the disc, and by rotating the roller in both forward and reverse directions using a drive motor as a drive source, the disc sandwiched between the guide member and the roller is inserted into the play position and the play position. Slot-in type disk transport mechanisms that are automatically transported between the two are widely used. In a disc player using such a disc transport mechanism, the disc slides and moves on the lower surface of the synthetic resin guide member, so that a bad disc with burrs on the outer peripheral edge, dust on the surface, etc. When a disk with accumulated particles is used, the frictional resistance between the disk and the guide member becomes extremely large, and the disk may not be transferred only by the rotational driving force of the roller.

Therefore, conventionally, there has been known a disk transport mechanism in which a pair of auxiliary rollers are rotatably supported on both left and right sides of the guide member, and the friction resistance between the disk and the guide member is reduced by these auxiliary rollers (for example, , See Patent Document 1). In such a disc transport mechanism, when the central portion of the disc reaches the roller, the outer peripheral edge of the disc comes into contact with the auxiliary roller to rotate it, so that the disc is sandwiched between the roller and the auxiliary roller. It can be transported smoothly. Also, the leaf spring part is formed integrally with the guide member, and the rotation shaft of the auxiliary roller is elastically contacted with the leaf spring part and pressed in the axial direction, so that even when the disk is not sliding with the guide member, it is assisted. The roller is not loose, and the generation of abnormal noise called rattle noise is prevented.
Japanese Patent No. 3615771

  As described above, according to the conventional disk player disclosed in Patent Document 1, the disk can be smoothly conveyed by the auxiliary roller rotatably supported by the guide member, and the leaf spring integrally formed with the guide member Since the auxiliary roller is pressed in the axial direction by the elasticity of the portion, it is possible to prevent the occurrence of rattle noise due to the backlash of the auxiliary roller. However, in order to prevent rattling of the auxiliary roller by pressing in the axial direction, a large pressing force is required, and it is difficult to apply such a large pressing force to the leaf spring portion integrally formed with the guide member. In addition, since the leaf spring portion integrally formed with the guide member is likely to be deformed over time, there is a problem that the effect of preventing backlash of the auxiliary roller due to the leaf spring portion is remarkably reduced when used for a long time. It was.

  The present invention has been made in view of such a state of the art, and an object of the present invention is to provide a vehicle-mounted disc that can reliably prevent the occurrence of rattle noise caused by rattling of the auxiliary roller with a simple configuration. To provide a player.

  The present invention adopts an anti-vibration structure in which a chassis on which an entire mechanism such as a disk transport mechanism and a drive mechanism is mounted is switched to a locked or unlocked state with respect to a frame body, and in a direction close to the lower surface of the guide member. The outer peripheral surface of the elastically urged roller is brought into pressure contact with the outer peripheral surface of the auxiliary roller in a standby state, thereby preventing the auxiliary roller supported by the guide member so as to rotate freely.

  In the disc player of the present invention, the pair of auxiliary rollers capable of contacting the outer peripheral edge of the disc being conveyed are rotatably supported on both sides of the guide member, so that the disc can be smoothly held between the auxiliary roller and the rollers. Since the outer peripheral surface of the roller is brought into pressure contact with the outer peripheral surface of the auxiliary roller in the standby state, the auxiliary roller can be reliably rattled in the standby state without specially providing a special member. Can be prevented. In addition, it uses a vibration-proof structure that switches the chassis on which the disk transport mechanism and drive mechanism are mounted to the frame to the locked or unlocked state, and the entire mechanism including the chassis is elastically supported in the play state. Therefore, when the roller is separated from the auxiliary roller in this play state, the external vibration does not directly act on the auxiliary roller, and in this case as well, rattle noise due to the backlash of the auxiliary roller does not occur.

  The present invention provides a frame having a disc insertion slot, a disc transport mechanism for automatically transporting a disc inserted from the disc insertion slot between the disc insertion slot and a play position, and an inserted disc at the play position. A disk drive mechanism that is chucked and rotated, a chassis equipped with the disk transport mechanism and the drive mechanism, and a lock switching mechanism that switches the chassis to a locked or unlocked state with respect to the frame. The transport mechanism includes a guide member disposed on the upper side of the chassis, a roller bracket that is elastically biased in a direction close to the guide member, and a roller that is rotatably supported by the roller bracket. The roller bracket is brought close to the lower surface of the guide member in a standby state waiting for insertion of a disc. Thus, in the in-vehicle disc player capable of sandwiching the disc between the lower surface of the guide member and the roller, a pair of auxiliary rollers capable of contacting the outer peripheral edge of the disc in the middle of conveyance on both sides of the guide member The outer peripheral surface of the roller is pressed against the outer peripheral surface of the auxiliary roller in the standby state.

  According to the in-vehicle disc player configured as described above, the disc can be smoothly conveyed while being sandwiched between the auxiliary roller and the outer peripheral surface of the roller is pressed against the outer peripheral surface of the auxiliary roller in a standby state. Therefore, the backlash of the auxiliary roller in the standby state can be reliably prevented without specially providing a special member. In addition, it uses a vibration-proof structure that switches the chassis on which the disk transport mechanism and drive mechanism are mounted to the frame to the locked or unlocked state, and the entire mechanism including the chassis is elastically supported in the play state. Therefore, when the roller is separated from the auxiliary roller in this play state, the external vibration does not directly act on the auxiliary roller, and in this case as well, rattle noise due to the backlash of the auxiliary roller does not occur.

  In the above configuration, the guide member includes a metal support plate and a synthetic resin guide top integrated on the lower surface of the support plate, and the rotating portion of the auxiliary roller is exposed from an opening provided in the guide top. It is preferable that the rotation shaft of the auxiliary roller is sandwiched between the support plate and the guide top because the auxiliary roller can be easily incorporated into the guide member.

  The embodiment will be described with reference to the drawings. FIG. 1 is a plan view of an in-vehicle disc player according to an embodiment of the present invention, and FIG. 2 is a perspective view of the disc player as viewed from the back side with the frame of FIG. 3 and FIG. 3 are diagrams for explaining the operation of the disc transport mechanism provided in the disc player, FIG. 4 is a rear view of a guide member provided in the disc transport mechanism, FIG. 5 is an exploded perspective view of the disc transport mechanism, and FIG. FIG. 7 is an explanatory view of the power switching mechanism provided in the disc player, and FIG. 8 is a diagram of the planetary gear and relay member provided in the power switching mechanism. FIG. 9 is a perspective view of the planetary gear and the relay member.

  The present embodiment is applied to an in-vehicle CD player as an example of a disc player. As shown in FIGS. 1 and 2, the CD player includes a base member 1 made of a synthetic resin, which is a structural member of a chassis. ing. Although not shown in FIG. 2, the base member 1 is elastically supported by a plurality of dampers 3 on a box-like frame 2 that forms the outer shell of the main body device. A lock pin (not shown) is projected.

  A metal support plate 4 is fixed to the front upper surface of the base member 1 with screws. As shown in FIG. 3, a synthetic resin guide top 5 is fixed to the lower surface of the support plate 4 such as a snap joint. It is integrated using means. A guide member 6 is constituted by the support plate 4 and the guide top 5, and a pair of auxiliary rollers 7 are rotatably supported on the left and right sides of the guide member 6. These auxiliary rollers 7 are cylindrical bodies formed of synthetic resin. As shown in FIG. 4, a straight line P connecting the rotation axes of both auxiliary rollers 7 is with respect to the conveying direction (arrow X1-X2 direction) of the disk D. Are orthogonal. The rotating shaft of the auxiliary roller 7 is sandwiched between the support plate 4 and the guide top 5, and the rotating portion of the auxiliary roller 7 is exposed from a rectangular opening 5 a provided in the guide top 5.

  A disc transport space S is defined between the guide member 6 and the inner bottom surface of the base member 1, and the disc transport space S is formed in a horizontally long shape formed on the front plate of the frame body 2 as shown in FIG. 3. It faces the disc insertion slot 2a. In addition, a rubber roller 8 is disposed inside the disk transport space S, and the roller 8 is driven to rotate in both forward and reverse directions by the power of a drive motor described later. The roller 8 is formed in a tapered shape that decreases in diameter as it approaches the central portion, and is rotatably supported at the rear end portion of the metal roller bracket 9. Pins 9 a and 9 b are planted at the front and rear ends of both side walls of the roller bracket 9, and the roller bracket is formed by sandwiching the front end side pins 9 a between the left and right side walls of the base member 1 and the support plate 4. 9 is rotatably supported by the base member 1. The rear end side pin 9b is inserted into a cam hole of a slider, which will be described later, and the roller bracket 9 is rotated (swinged) about the pin 9a as the slider moves forward and backward. Yes. Further, a bent portion 9c is formed on the front side of the central portion of the roller bracket 9, and the roller bracket 9 is formed by stretching a spring 10 between the bent portion 9c and the bottom surface of the base member 1. The rear end of the spring 10 is urged by the elastic force of the spring 10 in the direction approaching the lower surface of the guide top 5. FIG. 3A shows a standby state in which the disk D is not inserted. In this standby state, the outer peripheral surface of the roller 8 is pressed against the outer peripheral surface of the auxiliary roller 7 due to the elastic force of the spring 10. In the play state shown in FIG. 3B, the roller 8 descends with the rotation of the roller bracket 9 and separates from the auxiliary roller 7. The guide member 6, the roller 8 and the roller bracket 9 constitute a disk transport mechanism.

  As shown in FIGS. 5 and 6, a shaft hole portion 9d is formed on the front side of both side portions of the roller bracket 9, and the shaft portion 11a of the erroneous insertion preventing member 11 is inserted into the shaft hole portion 9d. Thus, the pair of erroneous insertion preventing members 11 are rotatably supported on both side portions of the roller bracket 9. These erroneous insertion prevention members 11 are molded products of synthetic resin, and a cam groove 11b is formed on one side surface thereof, and the cam groove 11b is inserted into a protrusion 1a provided on the front side of the inner bottom surface of the base member 1. Has been. Further, a clearance groove 11 c is formed at the center of the erroneous insertion preventing member 11, and the clearance groove 11 c is inserted into a guide wall 1 b erected on the base member 1. Further, a thin elastic piece 11d that extends rearward in a cantilevered manner is integrally formed on the rear end side of the erroneous insertion preventing member 11, and this elastic piece 11d is a roller bracket located behind the shaft hole 9d. It faces the lower surface of 9. Thus, by rotatably supporting the pair of erroneous insertion preventing members 11 on both sides of the roller bracket 9 and engaging the cam groove 11c of the erroneous insertion preventing member 11 and the protrusion 1a of the base member 1, The erroneous insertion preventing member 11 enters and exits the disk transport space S according to the swing angle of the roller bracket 9, and the tip of the elastic piece 11 d of the erroneous insertion preventing member 11 comes in contact with and separates from the lower surface of the roller bracket 9. ing.

  Specifically, in the standby state shown in FIGS. 3 (A) and 6 (A), the roller bracket 9 is in a forward inclined posture in which the rear end side supporting the roller 8 is raised, and the front end side of the roller bracket 9 The mis-insertion preventing member 11 supported by the base member 1 is maintained in a substantially horizontal posture by shifting the projection 1a of the base member 1 to one end of the cam groove 11b. As a result, a disk transport space S that allows insertion of the disk D is secured above the erroneous insertion prevention member 11, and the tip of the elastic piece 11 d of the erroneous insertion prevention member 11 is in elastic contact with the lower surface of the roller bracket 9. On the other hand, in the play state shown in FIG. 3 (B) and FIG. 6 (B), as the roller bracket 9 is swung so as to be in a substantially horizontal posture, the protrusion 1a starts from one end of the cam groove 11b. Shifting to the other end, the erroneous insertion preventing member 11 is in an upright state. As a result, the pair of erroneous insertion preventing members 11 protrudes into the left and right side portions of the disc transport space S, and the distal ends of the elastic pieces 11 d of the erroneous insertion preventing member 11 are separated from the lower surface of the roller bracket 9.

  1 and 2, the left and right rear ends of the clamp arm 12 are pivotally supported on the rear wall of the base member 1, and the clamper 13 rotates on the front side of the central portion of the clamp arm 12. Supported as possible. A spindle motor 14 and a pickup 15 constituting the drive mechanism and the drive motor 16 described above are mounted on the back side of the base member 1, and the rotation shaft of the spindle motor 14 faces the lower surface of the clamper 13. A turntable (not shown) is fixed. Further, the power switching mechanism 17 and the first and second gear trains 18 and 19 are mounted on the back side of the base member 1, and the power output from the drive motor 16 is the power as described later. It is selectively transmitted to one of the first gear train 18 and the second gear train 19 via the switching mechanism 17.

  Synthetic resin sliders 20 are disposed outside the left and right side walls of the base member 1, and both the sliders 20 are supported so as to be movable in the front-rear direction (X1-X2 direction) of the base member 1. One slider 20 is operated by the first gear train 18, and the movement of the slider 20 is transmitted to the other slider 20 via the link member 21. That is, one slider 20 shown on the right side in FIG. 2 is a drive side slider operated by using the drive motor 16 as a drive source, and the other slider 20 shown on the left side in FIG. 2 is synchronized with the drive side slider 20. The driven slider is operated. Both sliders 20 are formed with cam holes 20a, lock grooves 20b, protrusions 20c, and the like, and as described above, the pins 5b of the roller bracket 9 move relative to each other within the cam holes 20a as the sliders 20 move forward and backward. By doing so, the roller bracket 9 is rotated to move the roller 8 up and down. In addition, the lock groove 20b is engaged with and disengaged from the lock pin (not shown) of the frame body 2 as the sliders 20 move back and forth, so that the base member 1 is locked / unlocked with respect to the frame body 2. When the switching mechanism is operated, the protrusions 20c are engaged with and disengaged from the cams 12a formed on both side walls of the clamp arm 12 as the sliders 20 move back and forth, whereby the clamp arm 12 is rotated and the clamper 13 is moved. It is designed to move up and down.

  As shown in FIG. 7, the power switching mechanism 17 includes a planetary gear train 24 having a sun gear 22 and a planetary gear 23, and an arrow AB direction centering on the axis of the sun gear 22 around the planetary gear 23. A pivot arm 25 that can swing to the right, first and second lock levers 26 and 27 that can restrain the pivot arm 25 at the end position in the swing direction, and the planetary gear 23 being moved. The sun gear 22 is provided on a gear 41 that is always meshed with a worm 40 fixed to the output shaft of the drive motor 16.

  The planetary gear 23 can be engaged with and disengaged from the first gear 18a of the first gear train 18 and is not shown, but the final gear of the first gear train 18 is a component of the disk transport mechanism. Is meshed with a gear fixed to the rotating shaft of the roller 8. The gear 18 b in the middle of the first gear train 18 can be engaged with and disengaged from the rack 29 a of the slider drive member 29, and the drive-side slider 20 is moved forward and backward through the slider drive member 29. ing. The slider drive member 29 includes a holding member 30 that moves back and forth on the back surface of the base member 1 and a meshing member 31 that is movably mounted on the holding member 30. The meshing member 31 is a spring. It is urged in the X1 direction by 32 elastic forces. Cam holes 30a and 31a are formed in the holding member 30 and the engagement member 31, respectively. When the pin 26a of the first lock lever 26 is engaged with the cam holes 30a and 31a, the first lock lever is formed. 26 rotates as the slider drive member 29 moves. A trigger pin 33 is disposed at the end of the meshing member 31 in the X1 direction. The trigger pin 33 is a detection member (not shown) that is rotated by the edge of the disk D inserted in the apparatus. It is planted in. When the engagement member 31 is pressed in the X2 direction by the trigger pin 33, the gear 18b of the first gear train 18 is engaged with the rack 29a of the slider drive member 29 to transmit power.

  Another gear 34 is always meshed with the gear 41 of the planetary gear train 24, and a pinion 35 that is the first gear of the second gear train 19 is provided on the gear 34. The pinion 35 can be engaged with and disengaged from the rack 36 that is the final gear of the second gear train 19, and this rack 36 is engraved on a transfer member 37 that is a component of the pickup transfer mechanism. The transfer member 37 is provided with a drive projection 37 a that can be engaged with and disengaged from one end of the second lock lever 27, and the other end of the second lock lever 27 is a cam hole 25 a formed in the rotating arm 25. Is engaged. As shown in FIG. 2, a guide shaft 38 extending in the radial direction (arrow α1-α2 direction) of the disk D is fixed to the back surface of the base member 1, and the pickup 15 and the transfer member 37 are inserted into the guide shaft 38. Thus, the transfer member 37 is urged toward the outer peripheral side (in the direction of the arrow α1) by the elastic force of the spring 39 and is brought into close contact with the pickup 15.

  The relay member 28 is a resin molded product integrally formed with the base member 1, and the power output from the drive motor 16 is either the first gear train 18 or the second gear train 19 via the power switching mechanism 17. When switched to one side, the planetary gear 23 meshes with the relay member 28 and is supported for movement. As shown in FIGS. 8 and 9, the relay member 28 is provided with two tooth portions 28a forming a part of the internal gear centered on the axis of the sun gear 22, and these tooth portions 28a. Is inclined at an angle θ so that the tooth height dimension gradually decreases along the tooth width direction. In the case of the present embodiment, the tooth tip surface of the tooth portion 28a is set so that the angle θ is about 13 degrees. It is inclined at an acute angle with respect to a virtual line O extending vertically from the plate surface of the member 1. Therefore, as shown in FIG. 9, even when the tooth tip 23a of the planetary gear 23 jumps at a position that coincides with the tooth portion 28a of the relay member 28 when the power of the drive motor 16 is switched, the tooth tips of both planets are in the tooth width direction. Therefore, as shown in FIG. 8, the planetary gear 23 is normally meshed without riding on the tooth portion 28 a of the relay member 28.

  Next, the operation of the CD player configured as described above will be described.

  At the time of ejection (standby state) when the disk D is not inserted into the main unit, the planetary gear 23 of the planetary gear train 24 is the first gear 18a of the first gear train 18 as shown in FIG. This state is maintained by the first lock member 26 that restrains the rotating arm 25. Further, since the drive protrusion 37a of the transfer member 37 is engaged with the second lock lever 27, the transfer member 37 resists the spring force of the spring and is located on the innermost end side (in the direction of the arrow α2) of the guide shaft 38. The engagement between the pinion 35 and the rack 36 is released. Therefore, the power of the drive motor 16 can be transmitted from the sun gear 22 of the power switching mechanism 17 to the first gear train 18 via the planetary gear 23, and the power transmission from the drive motor 16 to the second gear train 19 is It is in a blocked state.

  In such a standby state, both sliders 20 are in the forward position on the front side of the base member 1, and the lock grooves 20 b of these sliders 20 are engaged with the lock pins of the frame body 2. The base member 1 on which the entire mechanism is mounted is in a locked state in which it is fixedly supported with respect to the frame 2. Further, since the protrusions 20c of both sliders 20 are in contact with the cam 12a of the clamp arm 12, the clamp arm 12 is rotated upward and the clamper 13 is separated from the turntable. Further, the pin 9b of the roller bracket 9 is in the upper position of the cam hole 20a of both sliders 20, and the outer peripheral surface of the roller 8 receives the elastic force of the spring 10 as shown in FIG. Since it is pressed against the outer peripheral surface of the auxiliary roller 7 exposed from the lower surface, rattling of the auxiliary roller 7 with respect to the guide member 6 is suppressed by the roller 8 so that rattle noise due to rattling of the auxiliary roller 7 does not occur. It has become. Further, in this standby state, the roller bracket 9 is in a forward inclined posture in which the rear end side supporting the roller 8 is raised, and as shown in FIGS. 3 (A) and 6 (A), the front end side of the roller bracket 9 is provided. Since the pair of erroneous insertion preventing members 11 supported by the two are maintained in a substantially horizontal posture, a disc transport space S that allows insertion of the disc D is secured above both erroneous insertion preventing members 11. In addition, since the tip of the elastic piece 11d integrally formed with the erroneous insertion preventing member 11 is elastically contacted with the lower surface of the roller bracket 9, the backlash of the roller bracket 9 in the standby state is suppressed, and the backlash of the roller bracket 9 is reduced. The rattle noise caused by the sticking is not generated.

  In this state, when the disc D is inserted into the main body of the apparatus from the disc insertion port 2a of the frame 2, the disc D reaches the roller 8 through the disc transport space S above the erroneous insertion preventing members 11, during this time. Since the disk detection means (not shown) is operated by inserting the disk D, the drive motor 16 starts to rotate in one direction based on the signal from the disk detection means. In this case, since the power of the drive motor 16 is maintained to be transmitted from the sun gear 22 of the power switching mechanism 17 to the first gear train 18 via the planetary gear 23, the final gear of the first gear train 18 is maintained. The roller 8 begins to rotate in one direction by the driving force from the stepped gear, and the disk D sandwiched between the roller 8 and the auxiliary roller 7 is automatically conveyed in the insertion direction (arrow X1 direction) by the rotational force of the roller 8. . Thus, when the disk D is transported to above the play position (a position where the center hole of the disk D is between the turntable and the clamper), a detection member (not shown) is rotated by the edge of the disk D. Since the trigger pin 33 provided on the detection member presses the meshing member 31 of the slider driving member 29 toward the front side of the base member 1, the meshing member 31 compresses the spring 32 against the holding member 30. Moving in the direction of the arrow X2, the gear 18b of the first gear train 18 meshes with the rack 29a. As a result, the holding member 30 and the meshing member 31 move integrally in the direction of the arrow X2, and accordingly, the drive-side slider 20 starts to move in the direction of the arrow X1 from the forward movement position toward the backward movement position. In this case, since the movement of the drive-side slider 20 is transmitted to the driven-side slider 20 via the link member 21, the drive-side and the driven-side slider 20 move synchronously from the forward movement position to the backward movement position.

  While the slider 20 moves to the end position in the backward direction in this way, the lock groove 20b of both sliders 20 is separated from the lock pin of the frame body 2, so that the base member 1 is elastically attached to the frame body 2 by the plurality of dampers 3. It will be in the unlocked state that was supported. Further, since the pin 9b of the roller bracket 9 moves from the upper position to the lower position of the cam hole 20a of both sliders 20, the roller bracket 9 resists the elastic force of the spring 10 as shown in FIG. The roller 8 is rotated downward, and the roller 8 supported on the rear end side of the roller bracket 9 is separated from the lower surface of the disk D. Further, at this timing, the protrusions 20c of both sliders 20 are separated from the cam 12a of the clamp arm 12, so that the clamp arm 12 supporting the clamper 13 rotates downward, and the center of the disk D is between the clamper 13 and the turntable. Clamped.

  Further, the slider driving member 29 for driving the slider 20 moves to the end position in the X2 direction when the clamping operation of the disk D is completed, and accordingly, the power switching mechanism 17 is moved from FIG. 7 (A) to FIG. 7 (B). It will be in the state shown in That is, when the pin 26a of the first lock lever 26 moves to the end of the cam hole 30a of the holding member 30, the first lock lever 26 rotates in the clockwise direction in FIG. Is released. As a result, the rotating arm 25 swings in the direction of arrow A in response to the reaction force from the planetary gear 23 that attempts to rotate the gear 18a, and the planetary gear 23 pivotally supported on the rotating arm 25 is the sun gear. 22 starts to move in the direction of arrow A while being engaged. Further, as the pivot arm 25 swings in the direction of arrow A, the second lock lever 27 engaged with the cam hole 25 a rotates clockwise, and the second lock lever 27 drives the transfer member 37. In order to press the protrusion 37a in the direction of the arrow α1, the rack 36 of the transfer member 37 is engaged with the pinion 35 of the gear 34 under the elastic force of the spring 39. Accordingly, at this time, the power of the drive motor 16 is transmitted from the sun gear 22 of the power switching mechanism 17 to the second gear train 19 having the pinion 35 and the rack 36 and from the drive motor 16 to the first gear train 18. The power transmission of is cut off and a play state is entered.

  At the time of such power switching, the planetary gear 23 meshes with and supports the tooth portion 28a of the relay member 28 immediately before leaving the gear 18a, and the pinion 35 meshes with the rack 36 while maintaining this state. The first gear train 18 is reliably switched to the second gear train 19 side. At this time, as shown in FIG. 9, even if the tooth tip 23 a of the rotating planetary gear 23 jumps in at a position coincident with the tooth portion 28 a of the relay member 28, both tooth tips are pointed in the tooth width direction. As shown in FIG. 8, the planetary gear 23 normally meshes without riding on the teeth 28a of the relay member 28, as shown in FIG. Problems such as tooth tip destruction will not occur.

  In this play state, the spindle motor 14 is driven to rotate the disk D, and the drive motor 16 is rotated in both forward and reverse directions to move the transfer member 37 in the directions of arrows α1-α2, thereby picking up the pickup 15. The disk D is transferred to the outer side and the inner side in the radial direction, and the reproducing operation is performed. Further, as shown in FIG. 3B, the pair of erroneous insertion preventing members 11 rotatably supported on the front end side of the roller bracket 9 is in a standing state in the play state, and these erroneous insertion preventing members 11 are in the disc transport space. Since it protrudes into the left and right sides of S and faces the back side of the disc insertion slot 2a, double insertion of the disc in the play state is prevented by the erroneous insertion preventing member 11. The elastic piece 11d of the erroneous insertion preventing member 11 is separated from the lower surface of the roller bracket 9 in the play state. However, as described above, the base member 1 on which the entire mechanism such as the disk transport mechanism is mounted is framed in the play state. Since the unlocked state is elastically supported by the body 2, rattle noise due to the backlash of the erroneous insertion preventing member 11 does not occur even in the play state. Similarly, the pair of auxiliary rollers 7 rotatably supported on both side portions of the guide member 6 are separated from the roller 8 in the play state, but external vibration does not directly act on the auxiliary roller 7 in the play state. The rattle noise caused by the backlash is not generated.

  Further, when a disc that has been completely reproduced is ejected, the reverse operation is performed, and the power of the drive motor 16 is switched from the second gear train 19 to the first gear train 18. That is, when an unillustrated eject button is inserted in the play state shown in FIG. 7B, the drive motor 16 starts to rotate in the other direction, and the power of the drive motor 16 is transferred via the pinion 35 and the rack 36. It is transmitted to the member 37. As a result, the transfer member 37 moves in the direction of the arrow α2 to transfer the pickup 15 inward in the radial direction of the disk D. When the pickup 15 comes into contact with the spindle motor 14 and stops, only the transfer member 37 compresses the spring 39. Move to the end position in the direction of arrow α2. As a result, the rack 36 of the transfer member 37 moves away from the pinion 35 of the gear 34, and the drive protrusion 37a of the transfer member 37 engages with the second lock lever 27 to rotate it counterclockwise, and FIG. As shown in (A), the rotation arm 25 starts to move in the direction of the arrow B from the end position in the direction of the arrow A as the second lock lever 27 rotates. Also at this time, the planetary gear 23 is engaged with the tooth portion 28a of the relay member 28 while being moved in the direction of the arrow B, and is engaged with the gear 18a of the first gear train 18 while maintaining this state. At this time, the power of the drive motor 16 is transmitted from the planetary gear 23 of the power switching mechanism 17 to the first gear train 18 and the power transmission from the drive motor 16 to the second gear train 19 is interrupted. When the slider drive member 29 is moved in the X1 direction from the end position in the X2 direction by the first gear train 18, the first lock lever 26 is rotated counterclockwise to move the rotary arm 25 to the end in the arrow B direction. By restraining the position and moving the slider 20 from the retracted position to the advanced position, after the clamping operation of the disk D is released, the roller 8 rotates reversely and the disk is automatically conveyed from the play position to the ejection direction. .

It is a top view of the vehicle-mounted disc player which concerns on the Example of this invention. FIG. 2 is a perspective view of the disc player as viewed from the back side with the frame of FIG. 1 removed. FIG. 6 is an operation explanatory diagram of a disc transport mechanism provided in the disc player. It is a reverse view of the guide member with which this disc conveyance mechanism is equipped. It is a disassembled perspective view of this disk conveyance mechanism. It is a perspective view which shows operation | movement of the erroneous insertion prevention member with which this disc conveyance mechanism is equipped. It is explanatory drawing of the power switching mechanism with which this disc player is equipped. It is a top view which shows the meshing state of the planetary gear with which this power switching mechanism is equipped, and a relay member. It is a perspective view of this planetary gear and a relay member.

Explanation of symbols

1 Base member (chassis)
DESCRIPTION OF SYMBOLS 1a Protrusion 2 Frame 3 Damper 4 Support plate 5 Guide top 5a Opening 6 Guide member 7 Auxiliary roller 8 Roller 9 Roller bracket 10 Spring 11 Misinsertion preventing member 11a Shaft 11b Cam groove 11c Escape groove 11d Elastic piece 12 Clamp arm 13 Clamper DESCRIPTION OF SYMBOLS 14 Spindle motor 15 Pickup 16 Drive motor 17 Power switching mechanism 18 1st gear train 19 2nd gear train 20 Slider 22 Sun gear 23 Planetary gear 23a Tooth tip 24 Planetary gear train 25 Rotating arm 26 1st lock lever 27 Second lock lever 28 Relay member 28a Tooth part 29 Slider drive member 30 Holding member 31 Engagement member 33 Trigger pin 34 Gear 35 Pinion 36 Rack 37 Transfer member 37a Drive protrusion 38 Guide shaft 39 Spring D Disk S Disk transport space

Claims (2)

A frame having a disc insertion slot; a disc transport mechanism for automatically transporting a disc inserted from the disc insertion slot between the disc insertion slot and a play position; and chucking the inserted disc at the play position. A drive mechanism that rotates and drives, a chassis equipped with the disk transport mechanism and the drive mechanism, and a lock switching mechanism that switches the chassis to a locked or unlocked state with respect to the frame body, the disk transport mechanism, A disk having a guide member disposed on an upper side of the chassis, a roller bracket elastically biased in a direction close to the guide member, and a roller rotatably supported by the roller bracket; The roller bracket is brought close to the lower surface of the guide member in a standby state waiting for In-vehicle disc player which enables clamping the disc between the rollers and the lower surface of the guide member,
A pair of auxiliary rollers that can come into contact with the outer peripheral edge of the disk being conveyed are rotatably supported on both sides of the guide member, and the outer peripheral surface of the roller is pressed against the outer peripheral surface of the auxiliary roller in the standby state. An in-vehicle disc player characterized by the above. 2. The guide member according to claim 1, wherein the guide member includes a metal support plate and a synthetic resin guide top integrated with a lower surface of the support plate, and the rotating portion of the auxiliary roller is provided on the guide top. An in-vehicle disc player characterized by being exposed from an opening and sandwiching a rotating shaft of the auxiliary roller between the support plate and the guide top.

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