JP4638838B2 - In-vehicle disc player - Google Patents

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. Conventionally, in a disc player using such a disc transport mechanism, a pair of erroneous insertion prevention members are rotatably supported on the left and right sides of the roller bracket, and these erroneous insertion prevention members are provided at the disc insertion slot when playing a disc. There is known one that prevents erroneous insertion of the second disc by positioning it on the back side (see, for example, Patent Document 1).

  FIGS. 10A and 10B illustrate a conventional disc player disclosed in Patent Document 1. FIG. 10A shows a standby state and FIG. 10B shows a play state. In this disc player, a roller bracket 101 is disposed below a synthetic resin guide member 100, and a roller 102 and a pair of erroneous insertion preventing members 103 are rotatably supported by the roller bracket 101. The guide member 100 is fixed to the lower surface of the movable base 104, and the roller bracket 101 is supported on the left and right side walls of the movable base 104 so as to be swingable about the support shaft 105. The roller bracket 101 is urged in a direction approaching the guide member 100 by an elastic member (not shown), and the roller bracket 101 is swung by a slider (not shown). The roller 102 is supported on the rear end side of the roller bracket 101 so as to be rotatable about a shaft 106. The roller 102 is driven to rotate in both forward and reverse directions by using a drive motor (not shown) as a drive source. The pair of erroneous insertion prevention members 103 is formed in an L shape as a whole using synthetic resin, and these erroneous insertion prevention members 103 are supported on both the left and right sides of the roller bracket 101 so as to be rotatable about the shaft 107. ing. An engagement piece 103 a is formed in the erroneous insertion preventing member 103, and the engagement piece 103 a is inserted into a gap between the bent pieces 108 a formed on the lower base 108.

As shown in FIG. 10 (A), in the standby state where the insertion of the disk is on standby, the roller 102 is pressed against the lower surface of the guide member 100 so that the disk can be sandwiched therebetween, and the engagement piece 103a. Is in contact with the bent piece 108a so that the erroneous insertion preventing member 103 is maintained in an inclined posture, and a disk transport space S for allowing the transport of the disk is secured above the erroneous insertion preventing member 103. Therefore, when the disk is inserted into the apparatus from a disk insertion opening (not shown) in this state, the disk reaches the space between the guide member 100 and the roller 102 through the disk transport space S, and then the rotational driving force of the roller 102. Is automatically conveyed to the inside of the apparatus. When the inserted disc is conveyed to the play position, the roller bracket 101 is swung counterclockwise about the support shaft 105 as shown in FIG. As a result, the roller 102 moves away from the guide member 100 so as not to hinder the rotation of the disk, and the erroneous insertion preventing member 103 rotates counterclockwise around the shaft 107 with respect to the roller bracket 101, thereby causing erroneous insertion. A part of the prevention member 103 protrudes into the disc transport space S and faces the back side of the disc insertion slot. Thereby, even if the user mistakenly tries to insert the second disc into the apparatus from the disc insertion slot, the disc cannot contact the erroneous insertion preventing member 103 at the position before the disc transport space S and can be inserted any more. Double insertion of the disc in the play state is prevented by the erroneous insertion preventing member 103.
JP 2001-331999 A

  According to the above-described conventional in-vehicle disc player, the erroneous insertion prevention member 103 can prevent the second disc from being erroneously inserted. The erroneous insertion prevention member 103 can be rotated on the roller bracket 101 by using the shaft 107. Since it is supported and needs some play (play) around the shaft 107 to maintain smooth rotation, the erroneous insertion prevention member 103 is loose due to external vibration, and an abnormal noise called rattle noise is generated. There was a problem that occurred. In particular, in the standby state where the insertion of the disc is on standby, the entire mechanism including the disc transport mechanism is in a locked state in which it is fixedly supported, and external vibration directly acts on the roller bracket 101 and the erroneous insertion prevention member 103. For this reason, rattle noise due to the backlash of the erroneous insertion preventing member 103 tends to occur remarkably.

  The present invention has been made in view of the actual situation of the prior art, and an object of the present invention is to generate rattle noise due to rattling of an erroneous insertion preventing member that prevents double insertion of a disk with a simple configuration. It is an object of the present invention to provide an in-vehicle disc player that can be surely prevented.

  According to the present invention, an elastic piece that extends in a cantilever manner is integrally formed on the erroneous insertion prevention member, and the elastic piece is elastically contacted with the roller bracket in a standby state waiting for insertion of a disk. The backlash of the erroneous insertion preventing member supported rotatably is prevented.

  In the disc player of the present invention, an elastic piece extending in a cantilever manner is integrally formed on an erroneous insertion preventing member rotatably supported on a roller bracket, and the elastic piece is elastically contacted with the roller bracket in a standby state. Therefore, the erroneous insertion preventing member prevents the erroneous insertion preventing member from being loosened under vibration in the standby state after preventing the erroneous insertion preventing member from being erroneously inserted twice in the play state. Generation of rattle noise due to attachment can be reliably prevented with a simple configuration.

The present invention includes a chassis, a guide member disposed on the upper side of the chassis, a roller bracket disposed swingably below the guide member, and rotatable on the rear end side of the roller bracket. A supported roller, an erroneous insertion preventing member rotatably supported on the front end side of the roller bracket and engaged with the lower side of the chassis, and a frame body that supports the chassis movably via a damper. A lock switching mechanism for switching the chassis to a locked or unlocked state with respect to the frame body, and a rear end side of the roller bracket in a standby state in which the chassis is in the locked state and is waiting for a disk to be inserted. Is placed close to the lower surface of the guide member to define a disk transport space that allows the disk to be transported above the erroneous insertion prevention member. The erroneous insertion preventing member is rotated relative to the roller bracket by separating the rear side of the roller bracket from the lower surface of the guide member in the play state entry has been the chassis is to the unlocked state, the In the in-vehicle disc player in which an erroneous insertion preventing member is positioned in the disc transport space to prevent insertion of a disc , a cam groove is formed on a side surface of the erroneous insertion preventing member , and the cam groove is formed in the chassis. A protrusion that engages with the roller bracket, and the relative position of the cam groove and the protrusion changes according to the swing angle of the roller bracket so that the erroneous insertion preventing member rotates with respect to the roller bracket. further wherein the integrally formed elastic pieces extending like a cantilever rearward the rear end side of the erroneous insertion preventing member, wherein said elastic piece in a standby state before And elastic contact to the roller bracket, the elastic piece has a configuration away from the roller bracket said play state.

  According to the in-vehicle disc player configured as described above, the double insertion of the disc can be prevented by the erroneous insertion preventing member rotatably supported by the roller bracket, and the elastic integrally formed with the erroneous insertion preventing member. By making the piece elastically contact with the roller bracket, rattling of the erroneous insertion prevention member under vibration in the standby state is suppressed, so that rattle noise due to the rattling of the erroneous insertion prevention member can be generated with a simple configuration. It can be surely prevented.

In addition, a frame body that supports the chassis so as to be movable via a damper, and a lock switching mechanism that switches the chassis to a locked or unlocked state with respect to the frame body. since so as to away from the roller bracket, Ru can be suppressed aged plastic deformation of the elastic piece. In addition, since the chassis equipped with a disc transport mechanism etc. is in an unlocked state that is elastically supported in the play state, even if the elastic piece of the erroneous insertion prevention member is separated from the roller bracket, external vibration will be It does not act directly on the prevention member, and even in this play state, rattle noise caused by the backlash of the erroneous insertion prevention member does not occur.

In addition , a cam groove is formed on the side surface of the erroneous insertion prevention member, and a protrusion is provided on the chassis to engage with the cam groove so that the relative position of the cam groove and the protrusion changes according to the swing angle of the roller bracket. since the, Ru could contacting and separating with a simple configuration the elastic piece of the incorrect insertion prevention member relative to the roller bracket.

  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. Accordingly, 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 if 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 23 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 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 a reproducing operation or the like 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 arrow B from the end position in the direction of arrow A as the second lock lever 27 rotates. At this time as well, the planetary gear 23 is engaged with the tooth portion 28a of the relay member 28 while moving 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. It is operation | movement explanatory drawing of the erroneous insertion prevention member with which the conventional disc player is equipped.

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 Incorrect insertion 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 (1)

Chassis, guide member disposed on the upper side of the chassis, a roller bracket disposed so as to be swingable below the guide member, and a roller rotatably supported on the rear end side of the roller bracket A mis-insertion preventing member that is rotatably supported on the front end side of the roller bracket and engages with a lower side of the chassis, a frame that supports the chassis through a damper, and the frame And a lock switching mechanism for switching the chassis to a locked or unlocked state, and the guide member is disposed on the rear end side of the roller bracket in a standby state in which the chassis is in the locked state and is waiting for a disk to be inserted. by proximity to the lower surface, defining the disc transfer space to allow the transport of the disc above the erroneous insertion preventing member, the disc is inserted The erroneous insertion preventing member is rotated relative to the roller bracket by separating the rear side of the roller bracket in the play state whose serial chassis is to the unlocked state from the lower surface of the guide member, the mis-insertion preventing In an in-vehicle disc player in which a member is positioned in the disc transport space to prevent insertion of a disc,
A cam groove is formed on a side surface of the erroneous insertion preventing member , and a protrusion that engages with the cam groove is provided on the chassis, and a relative position of the cam groove and the protrusion changes according to a swing angle of the roller bracket. The erroneous insertion preventing member is configured to rotate with respect to the roller bracket, and an elastic piece that is cantilevered backward is integrally formed on the rear end side of the erroneous insertion preventing member . automotive disc player the resilient piece in the above standby state to elastic contact to said roller bracket, the elastic piece by the play state is characterized in that so as to away from the roller bracket.

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