JP5216538B2 - Disc player - Google Patents

Description

  The present invention provides a pickup driving motor that appropriately drives a disk transport roller and a floating chassis fixing means, and is capable of reducing the size, thickness, and material cost, and reliably driving the motor to the transport roller. The present invention relates to a disc reproducing apparatus for transmitting a message.

  Conventionally, various disk reproducing apparatuses have been proposed in which a reciprocating movement of a pickup, position selection of a disk transport roller, rotational driving of the roller, and fixing of a floating chassis by a floating chassis fixing means are performed by a common motor.

Japanese Unexamined Patent Application Publication No. 2006-18915 describes the following disk device.
That is, the floating chassis consisting of the upper chassis (12) and the lower chassis (11) is elastically supported via the dampers (5, 7) in the fixed chassis consisting of the upper casing (2) and the lower casing (3). ing. An optical head (pickup) (31), a thread motor (M), a spindle motor (26), a switching slider (slide plate) (15) and the like are attached to the lower chassis (11). A turntable (22) is attached to the shaft. Further, a clamper (23), a roller arm (roller bracket) (27), a lock member (18), and the like are attached to the upper chassis (12), and a conveying roller (28) is attached to the roller bracket (27). It is supported.

When an eject operation is performed during disk reproduction, the pickup (31) is moved in the inner circumferential direction along the recording portion of the disk by the driving force of the motor (M). When the pickup (31) reaches the movement end position, the motor (M) moves the slide plate (15) in the disc insertion direction. By the movement of the slide plate (15), the clamper (23) is separated from the disk, and the lock member (18) fixes the floating chassis to the fixed chassis. Further, the roller bracket (27) is rotated by the movement of the slide plate (15) to connect the transport roller (28) to the motor (M), and the motor (M) rotationally drives the transport roller (28). The disc is ejected by the transport roller (28).
JP 2006-18915 A

  In the configuration disclosed in Japanese Patent Laid-Open No. 2006-18915, in order to easily connect the transport roller to the pickup driving motor, the roller bracket that supports the transport roller is also attached to the floating chassis together with the motor and the pickup. However, since the roller bracket and the conveyance roller are relatively heavy parts, the weight of the floating part becomes heavier by attaching them to the floating chassis, and the vibration amplitude of the floating part increases as the weight increases. In order to prevent the floating part from hitting the fixed chassis and parts mounted on the fixed chassis at the time of vibration, it is necessary to provide a sufficiently large space as a vibration shirr around the floating part. Thinning was difficult. Therefore, it has been difficult to design this type of disk reproducing apparatus for use in a vehicle whose outer dimensions are severely limited.

  Therefore, it is possible to reduce the weight of the floating part by attaching the roller bracket that supports the transport roller to the fixed chassis side, but the floating chassis is not fixed to the fixed chassis simply by doing this. In this case, it is difficult to dynamically connect the floating motor and the stationary conveyance roller. In this case, after the floating chassis is fixed to the fixed chassis, the motor and the transport roller must be connected dynamically, so that the timing for starting the transport of the disk is delayed.

  The present invention has been made in view of such problems, and in a configuration in which a pickup and a disk transport roller are appropriately driven by a common motor, a roller bracket that supports the transport roller without delaying the timing of starting the disk transport. The purpose of this is to reduce the weight of the floating part by moving the disk to the fixed chassis side, and to reduce the size and thickness of the entire disk reproducing apparatus and make it possible to be used for in-vehicle use.

A stationary chassis that is a housing having a disk insertion slot, a flat floating chassis that is slidably supported via a plurality of dampers in the stationary chassis, and the flow for rotating a mounted disk Between the turntable provided in the dasher and the disk insertion slot and the floating chassis, the rotary table is placed on the turntable with the rotation axis thereof in a direction perpendicular to the radial direction of the turntable. Provided in the fixed chassis for rotatably supporting the conveying roller so as to be movable between a first position contacting the lower surface of the disk and a second position spaced from the lower surface of the disk. A roller bracket, a driven gear attached to the roller bracket so as to interlock with the transport roller, and the A motor fixed to the driving chassis, a pickup supported by the floating chassis so as to be slidable in a direction perpendicular to the rotation axis of the turntable, a pickup driving mechanism for slidingly driving the pickup, and the conveying roller When it is in the first position, it meshes with the driven gear so as to contact the direction parallel to the floating chassis, but when the transport roller is in the second position, it is detached from the driven gear. A driving gear that is driven by the motor, and a transmission gear train that selectively transmits the driving force of the motor to the pickup driving mechanism and the driving gear, and a direction orthogonal to the conveying roller in the floating chassis. It is slidable on the opposite side edge and interlocks with the roller bracket. And is engaged with the fixed chassis at a first position relative to the floating chassis and moves the transport roller to the first position, and from the fixed chassis at a second position relative to the floating chassis. A slide plate that moves away and moves the transport roller to the second position and interlocks with the slide of the slide plate relative to the floating chassis, and the slide plate moves from the second position to the floating chassis. During the movement to the position 1, the floating chassis moves in the direction in which the driving gear exists with reference to the driven gear by contacting the fixed chassis immediately before the driven gear meshes with the driving gear. Regulating floating shear It is assumed that it is provided with a restriction means.

  The slide plate has a protrusion, and the floating chassis restricting means has a contact portion and a cam-like slide contact portion that slides on the protrusion when the slide plate moves in one direction. The floating chassis is pivotally mounted, and the protrusion in one direction is slidably contacted with the sliding contact portion by the movement of the slide plate in one direction, so that the floating chassis restricting means is rotated, and the contact portion is the fixed chassis. It is good to move to the regulation position which regulates the movement of the floating chassis with respect to the fixed chassis by abutting with.

The floating chassis restricting means may have an arm portion , and the arm portion may be pushed by the slide plate as the slide plate is moved to the second position so as to return to rotation.

  According to the present invention, by attaching the roller bracket to the fixed chassis side, the weight of the floating chassis can be reduced. As a result, the vibration chassis of the floating chassis can be reduced, and the entire apparatus can be reduced in size and thickness. Material cost reduction can be achieved. In addition, since the floating chassis is not fixed by the floating chassis fixing means by moving the slide plate, the pickup drive motor and the transport roller can be connected dynamically, so that the disk can be transported immediately after the floating chassis is fixed. Can start.

  Further, when floating control means is mounted on the floating chassis, and when the slide plate moves in one direction and moves the roller bracket, the floating chassis control means moves to a control position, and the floating chassis is moved via the slide plate. Since the reaction force from the roller bracket is restricted to move in the other direction, the roller gear can be reliably meshed with the connecting gear, and the driving force of the motor can be reliably transmitted to the transport roller.

  Furthermore, the slide plate has a protrusion, and the floating chassis restricting means has a contact portion and a cam-like slide contact portion that comes into sliding contact with the protrusion when the slide plate moves in one direction. It is mounted so that it can rotate, and the sliding part moves in one direction to slide the projecting part against the sliding contact part and the floating chassis restricting means rotates, and the contact part contacts the fixed chassis to fix the floating chassis. The mechanism can be simplified if it moves to a restriction position that restricts movement relative to the chassis.

  Furthermore, if the floating chassis restricting means has an arm portion and the arm portion is pushed by the slide plate as the slide plate returns in the other direction, the member such as a spring is not used. In addition, the floating chassis restricting means can be rotated and returned.

The best mode for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view showing an external appearance of a mechanism unit 1 of an in-vehicle disk reproducing apparatus. A disc insertion slot 2 through which the disc D is inserted is provided in front of the mechanism unit 1 of the disc reproducing apparatus. Arrow A indicates the disc insertion direction, and the opposite direction is the disc ejection direction. The disc insertion direction and the disc ejection direction are combined to obtain the disc insertion direction.

FIG. 2 is an exploded perspective view showing the mechanism unit 1 of the disk reproducing apparatus divided into an upper unit 3 and a lower unit 4, and further showing a pickup unit 5 and a clamp mechanism 6 which are part of the lower unit 4 separately. It is.
FIG. 3 is a plan view showing the upper unit 3, and FIG. 4 is a plan view showing a part of the lower unit 4 excluding the pickup unit 5 and the clamp mechanism 6. FIG. 5 is a plan view showing the pickup unit 5.

  As shown in FIGS. 2 and 3, the upper unit 3 includes an upper frame 7 and a disk detection mechanism 8. As shown in FIGS. 2, 4 and 5, the lower unit 4 includes a lower frame 10, a damper 11 including three buffer members attached to the lower frame 10, a transport roller mechanism 12, and a turntable. 13 and a pickup unit 5 including a pickup 14, a clamp mechanism 6 and the like. The upper frame 7 and the lower frame 10 constitute a fixed chassis 15.

  As shown in FIGS. 2 and 3, the upper frame 7 made of a metal plate has side plates bent downward from the four sides of a substantially rectangular top plate 18, and the left and right side plates 19 and 20 are inserted into the disk. Overlapping portions 21 and 22 are provided at the front and rear in the direction, respectively.

  Further, as shown in FIGS. 2 and 4, the lower frame 10 made of a metal plate has side plates that rise upward from the four sides of a substantially rectangular bottom plate 23, and the left and right side plates 24, 25 in the front in the disc insertion direction. Overlapping parts 26 and 27 are provided in the part and the rear part, respectively. Then, when the upper frame 7 and the lower frame 10 are combined, the overlapping portions corresponding to each other are overlapped, and the respective rear overlapping portions 22 and 27 are fixed with screws 28 (only shown on the right side in FIG. 2). (See FIG. 1).

  As shown in FIGS. 2 and 3, the top plate 18 is provided with an opening 29 having a large opening substantially in the center, and is positioned in a direction perpendicular to the disk insertion direction with respect to the opening 29. A pair of extended pieces 30 that are second upper engaged portions are extended downward. In the front portion of the top plate 18, a long recess is formed in the left-right direction which is extruded downward from the upper surface side, and the portion is used as a mounting portion 31. Furthermore, a notch 33 is appropriately provided in the step portion 32 between the top plate 18 and the mounting portion 31. Further, a guide portion 34 is formed in the mounting portion 31.

  The disk detection mechanism 8 includes a pair of left and right horizontally rotatable disk detection members 35 and 36, a coil spring 37 (shown by phantom lines in FIG. 3) spanned between the detection members 35 and 36, and an engagement. It comprises a stop lever 38 and a switch (not shown). The disk detection mechanism 8 is attached to the upper surface of the mounting portion 31.

  The disc detection members 35 and 36 detect that a disc has been inserted, and are respectively rotatably mounted on a pair of support shafts 39 projecting from the upper surface of the mounting portion 31. Each of the extended ends extended to the vicinity of each has a detector 40, 41 (see FIG. 2) extending downward.

  The disc detection member 35 is formed with a connecting piece 42 extending rightward in the drawing, and a connecting pin 43 is formed upward at the tip thereof. On the other hand, the disc detecting member 36 is formed with a connecting piece 44 extending leftward in the drawing, and a connecting groove 45 is formed near the tip of the connecting piece 44. Then, the connecting pin 43 is engaged with the connecting groove 45 so that both the disk detecting members 35 and 36 are synchronously rotated in the left-right direction.

  Both disc detection members 35 and 36 are rotatable within the range of the notch 33, and are respectively attached to a pair of stopper portions 46 formed on the upper surface of the mounting portion 31 by the biasing force of the coil spring 37. A part is brought into contact with each other to maintain the initial position. In addition, elastic pieces 47 and 48 are provided in the vicinity of the detection units 40 and 41, and these elastic pieces 47 and 48 are always elastically pressed against the upper surface of the mounting unit 31 to vibrate the detection members 35 and 36. To prevent rattle noise from occurring.

  The locking lever 38 is rotatably mounted on a support shaft 49 projecting from the upper surface of the mounting portion 31, and when the disk is inserted into the reproducing position, the disk detecting members 35 and 36 are locked at the rotating position. To do. The locking lever 38 has a pin 50 fitted to one of the disk detection members 36 at one end, and a sliding contact pin (not shown) which is located in the disk transport path and slidably contacts the outer periphery of the disk being transported at the other end. Each is formed. The locking lever 38 is urged to rotate by a very weak spring in the clockwise direction.

  As shown in FIGS. 2 and 4, the bottom plate 23 of the lower frame 10 is provided with a large opening 52 having a large opening, and the damper 11 is fixed to three positions on the upper surface of the bottom plate 23 around the large opening 52. A portion 53 is provided. Further, in the vicinity of the rear portion of the left side plate 24, an extrusion portion 54 having a chevron shape by extrusion processing is provided with the bottom plate 23 facing upward, and a part of the left side plate 24 is cut and bent toward the inside of the apparatus at a front position thereof. A cut and bent portion 55 is provided. The cut and bent portion 55 is provided with a hole 56 that is an engaged portion (see FIG. 2). Further, on the right side in the figure, a pair of bent portions 57, which are front and rear engaged portions, which are bent toward the inner side of the right side plate 25 at positions closer to the front side and deeper side than the hole 56, 57 is provided.

  A base 58 of the damper 11 is fixed to each of the three fixing portions 53, and a bottomed cylindrical portion 59 of each damper 11 is attached to a part of the pickup unit 5, and the pickup unit 5 is connected to these dampers 11. The lower frame 10 is supported in a floating state. Further, the transport roller mechanism 12 is disposed in the vicinity of the disc insertion opening 2 of the left and right side plates 24 and 25 of the lower frame 10.

  As shown in FIGS. 2 and 5, the pickup unit 5 includes a floating chassis 60 and a pickup driving mechanism 61, a loading mechanism 62, and a disk rotating mechanism 63 attached to the floating chassis 60.

  The floating chassis 60 is made of a metal plate and includes a substantially rectangular flat plate portion 65, left and right side plates 66 and 67 bent upward, a front plate 68 bent downward, and a rear plate 69 bent upward. Yes. The flat plate portion 65 has a rectangular hole 70 that is long from approximately the center to the upper left in FIG. 5, and the pickup 14 is disposed inside the rectangular hole 70 so as to be movable in the longitudinal direction of the rectangular hole 70. .

  Further, a rail portion 71 is provided in parallel with the longitudinal direction of the rectangular hole 70, and the rail portion 71 is sandwiched by a part of the pickup 14. In the flat plate portion 65, a groove 72 (shown by an imaginary line) is provided in the vicinity of the right side plate 67. Further, the flat portion 65 is provided with a pair of left and right stopper pieces 73 that restrict the insertion of the disc. A first motor 74 is disposed on the right side of the rectangular hole 70 in the figure.

  The pickup drive mechanism 61 includes a metal main guide rail 75 which is inserted through the pickup 14 and arranged in parallel with the rail portion 71, a synthetic resin feed screw 77 provided with a small gear 76 at one end, and the main guide. A first support member 78 and a second support member 79 that support both ends of the rail 75 and the feed screw 77, respectively, and a pickup feed plate 80 made of a thin plate that has one end fixed to the pickup 14 and the other end abutted against the feed screw 77. It is configured. The main guide rail 75, the small gear 76, the feed screw 77, and the first and second support members 78 and 79 are disposed on the lower surface side of the flat plate portion 65 of the floating chassis 60.

The loading mechanism 62 receives the driving force of the locking member 81 that locks the pickup 14, the driving force transmitting means 82 that transmits the driving force of the first motor 74, and the first motor 74, and moves forward and backward in the figure. The slide plate 83, a trigger member 84 that detects immediately before the disk is chucked on the turntable 13, and a restriction member 85 that is a floating chassis restriction means. Although not shown, the lock member 81 is provided with a spring that urges the member clockwise, and the trigger member 84 is provided with a reversal spring.
The lock member 81, the driving force transmission means 82, and the trigger member 84 are disposed on the lower surface side of the flat plate portion 65, and the slide plate 83 and the restriction member 85 are disposed on the right side plate 67.

  The lock member 81 is provided with a rotation fulcrum 86 at a substantially center, a sliding contact pin 87 on one side, and a lock portion 88 on the other side. The lock member 81 is urged to rotate clockwise by a spring (not shown).

  FIG. 6 is a side view showing the relationship between the slide plate 83 and its peripheral parts, and a cam groove 89 is provided at the center upper portion of the slide plate 83 in the drawing. Below this cam groove 89, a pair of through-holes 92 comprising slit portions 90, 90, which are front and rear engaged portions, which are narrow in the vertical direction, and relief portions 91, 91 which are wide in the vertical direction, 92 is provided. The slit portions 90 and 90 together with the bent pieces 57 and 57 of the lower frame 10 constitute a part of the floating chassis fixing means F. As shown in FIG. 6, the bent pieces 57 and 57 are fitted and floated. The chassis 60 is fixed to the fixed chassis 15. Further, a cam surface 93 which is a roller position switching portion is provided at the left end of the slide plate 83 in FIG. Furthermore, as shown in FIG. 5, the slide plate 83 is provided with a pressed portion 94 that protrudes to the left in the drawing. Further, the rear end portion of the slide plate 83 is provided with a protruding portion 95 that protrudes leftward.

  The trigger member 84 is provided with a contacted portion 98 extending upward on one end side, a rack 99 on the other end side, and a rotating shaft 100 on the intermediate portion. Furthermore, a boss 101 protruding upward is also provided at the other end. The boss 101 is inserted into the groove 72 of the floating chassis 60.

  The disk rotation mechanism 63 includes a second motor 102 attached to the foremost portion of the rectangular hole 70 in the figure, and the turntable 13 directly connected to the second motor 102.

  The driving force transmitting means 82 is mainly composed of a gear group as shown in FIGS. The transmission means 83 includes a switching means 103 for appropriately transmitting the driving force of the first motor 74 to the transport roller mechanism 12 or the like or the pickup driving mechanism 61, a third support member 104, and a fourth support member 105. doing.

  The gear group includes a worm gear 106 mounted on the shaft of the first motor 74, a first gear 107, a second gear 108 and a third gear 109, which are two-stage gears, and a fourth gear 110, which is a three-stage gear. A fifth gear 113 integrally formed with the first worm 111 and the second worm 112 at both ends long in the disk insertion direction, and a sixth gear 114 made of a two-stage gear attached to the fourth support member 105; The seventh gear 115 is a connecting gear. The seventh gear 115 is disposed at a position close to the cam surface 93 of the slide plate 83.

  The switching means 103 includes a switching plate 116 made of a metal plate indicated by an imaginary line, and the second gear 108 attached to the switching plate 116. The switching plate 116 has a shape in which a lower end portion in the drawing is bent to the right, has a tip portion as a pressing portion 117, and has a cam portion 120 including an arc portion 118 and an inclined portion 119 at the upper end in the drawing, The portion is pivotally supported by a shaft 121 common to the first gear 107. The second gear 108 is rotatably supported at a substantially intermediate position between the cam portion 120 and the shaft 121. Then, the second gear 108 is appropriately meshed with the third gear 109 or the fourth gear 110 by the rotation of the switching plate 116, and the driving force of the first motor 74 is transmitted to the pickup driving mechanism 61 or the conveying roller mechanism 12. Like to do.

  The first gear 107 is pivotally supported on the back side of the floating chassis 60, and the first-stage large gear is used as a helical gear, and this helical gear is engaged with the worm gear 106. The second small gear of the first gear 107 is always meshed with the large gear of the second gear 108. The fourth gear 110 is pivotally supported on the back side of the floating chassis 60, and the middle gear meshes with the first worm 111 of the fifth gear 113.

  The fifth gear 113 is supported by the third support member 104 on the first worm 111 side and rotatably supported by the fourth support member 105 on the second worm 112 side. The third support member 104 and the fourth support member 105 are attached to the back side of the floating chassis 60. The second worm 112 of the fifth gear 113 meshes with the small gear of the sixth gear 114 that is rotatably attached to the fourth support member 105. This small gear is a helical gear. The large gear of the sixth gear 114 is meshed with a seventh gear 115 that is also rotatably attached to the fourth support member 105. The large gear of the third gear 109 is always meshed with the small gear 76 that is a part of the pickup drive mechanism 61.

  As shown in FIG. 7, when the small gear of the second gear 108 is engaged with the large gear of the fourth gear 110, the driving force of the first motor 74 is transmitted to the transport roller mechanism 12. From this state, when the switching plate 116 rotates counterclockwise about the shaft 121 and the large gear of the second gear 108 meshes with the small gear of the third gear 109, the driving force of the first motor 74 is driven to pick up. It is transmitted to the mechanism 61.

  FIG. 8 shows a disk reproduction state around the regulating member 85. As shown in FIG. 8, the regulating member 85 is provided with a shaft 125 serving as a rotation fulcrum facing downward. The restricting member 85 has a contact portion 126 having an oval shape at the left end in the figure, and a cam-like sliding contact portion 127 at the right end. The sliding contact portion 127 includes an inclined surface 128 having a short distance and a straight surface 129 having a long distance. In addition, an arm portion 130 that is long in the lateral direction is formed above the shaft 125 in the drawing, and its tip extends to the rear end of the slide plate 83.

  The restricting member 85 is disposed by inserting the shaft 125 into a hole of an arrangement portion 67 a that is bent from the right side plate 67 of the floating chassis 60. Further, a contacted portion 10 a formed by bending the rear plate of the lower frame 10 is provided above the contact portion 126 in the drawing.

  As shown in FIGS. 9 and 10, the clamp mechanism 6 is attached to a clamper 131, a thin plate support plate 132 that rotatably supports the clamper 131, and the support plate 132, and rotates in the vertical direction. (A rotation center line is indicated by a one-dot chain line) and a clamper support 133 for contacting and disconnecting the clamper 131 from the turntable 13.

  As shown in FIG. 10, the clamper 131 has a shaft part 134 at the top in the figure and a substantially frustoconical protrusion 135 that fits into the center hole of the disk at the bottom in the figure. Have a taper 136 for centering the disk.

  The clamper 131 rotatably supports the shaft portion 134 on one end side of the support plate 132, and the support plate 132 is fixed to the clamper support 133 on the other end side, and the turntable 13 and the clamper 131 serve as a disc. When holding the disc, the shaft end of the clamper 131 is elastically pressed by a part of the support plate 132 to apply a disc clamping pressure between the turntable 13 and the clamper 131.

  As shown in FIG. 9, the clamper support 133 is made of a sheet metal elongated in the left-right direction, and has side plates 138, 139 bent downward at the left and right ends of the flat plate 137. The flat plate 137 is provided with a pair of rhombus holes 140 and 140 that are first rhomboid first and second upper engaging portions, and the rhombus holes 140 and 140 are respectively provided with straight grooves 141 at left and right corners in the drawing. , 141 are formed. The straight grooves 141 and 141 together with the extending pieces 30 and 30 of the upper frame 7 constitute a part of the floating chassis fixing means F. As shown in FIG. 17, the extending pieces 30 and 30 are fitted to float. The chassis 60 is fixed to the fixed chassis 15. A rear side edge 142 in the figure of the clamper support 133 is formed so as to be slightly inclined toward the back side from the center to the left and right. Further, an engagement pin 143 is attached to the front end portion of the right side plate 130 in the figure, and this engagement pin 143 is fitted in the cam groove 89 (see FIG. 6) of the slide plate 83.

  The left side plate 138 is partially extended downward as shown in FIG. 10, and the lower end of the extension is formed in a bifurcated shape. Is the second piece 145. The first piece 144 constitutes a part of the floating chassis fixing means F together with the hole 56 of the lower frame 10. The first piece 144 is fitted into the hole 56 as shown in FIG. Fix it. Further, left and right side plates 138 and 139 (only the left side plate 138 is shown in FIG. 10) are provided with shaft holes 146, respectively, and each shaft hole 146 has left and right side plates 66 and 67 (see FIG. 5) of the floating chassis 60. ) Are engaged with protrusions (not shown), respectively, and the clamper support 133 is rotatable around these protrusions.

  The center axis of rotation of the clamper support 133 with respect to the floating chassis 60 (the line connecting the centers of the two shaft holes 146) is on the back side by a distance K from the center axis of the turntable 13, and the distance K is It is larger than the center hole diameter (15 mm) of the disk D and within twice (30 mm), for example, about 25 mm. Further, the inner edge 142 of the clamper support 133 is slightly inclined toward the inner side from the center to the left and right.

  As shown in FIGS. 4 and 11, the transport roller mechanism 12 includes a transport roller 150 and a roller bracket 151.

  The transport roller 150 is configured by inserting a metal shaft 153 through a pair of synthetic rubber tapered cylinders 152 that gradually become smaller in diameter from the outer end to the inner end. Both ends of the shaft 153 protrude from the outer end of the tapered cylindrical body 152. One end of the projecting shaft 153 has a roller gear 154 as a part of the driving force transmitting means 82 (see FIG. 5) and the other end. Each has a collar 155 attached thereto.

  The roller bracket 151 is made of a metal plate. The roller bracket 151 has left and right side plates 157 bent upward at the left and right ends of a connecting plate 156 that is long to the left and right, and these left and right side plates 157 are located behind the connecting plate 156. It is extended to. The left right plate 157 has convex cylindrical portions 158 and 158 formed by drawing at substantially intermediate portions on the inner surface sides, and the convex cylindrical portions 158 and 158 are respectively connected to the left and right side plates 24 of the lower frame 10 (see FIG. 2). 25 is fitted in a groove 159 (only one is indicated by an imaginary line) and is mounted so as to be pivotable up and down with the convex cylindrical portions 158 and 158 as fulcrums. Further, both ends of the shaft 153 of the conveying roller 150 are rotatably supported by the extending portion between the left and right side plates 157.

  The rear edge of the connecting plate 156 is a mountain fold edge 160 that is bent toward the back surface. Although the mountain-folded edge 160 has a V-shaped concave shape that is substantially bilaterally symmetric in the plan view, the inclination angle is a slight one of about 1 ° with respect to the axial center line of the roller. In addition, a pair of left and right bent portions 161 and 161 bent upward are provided at the front edge of the connecting plate 156. These bent portions 161 and 161 are located at the upper position when the conveyance roller 150 is in the lower position, that is, when the disk is inserted into the reproduction position, and block the disk insertion slot 2 (see FIG. 1). Prevent double insertion of discs. Further, as shown in FIG. 11, a bent piece 162 bent at a substantially right angle toward the outside is provided at the innermost part of the right side plate 157 of the roller bracket 151. Note that the roller bracket 151 is constantly urged in a direction to raise the conveying roller 150 by a spring (not shown).

  Further, as shown in FIG. 13, a pair of guide portions 165 and 165 are provided on a part of the bottom plate 23 of the frame 10, and when the slide plate 83 moves in the disc ejection direction, the slide plate 83 moves to both guide portions 165 and 165. 165.

Next, the operation of the mechanism unit 1 of the disc player will be described.
FIG. 12 is a side view showing a state in which a disc is being reproduced. The disc D is sandwiched between the turntable 13 and the clamper 131. In this state, the slide plate 83 is located on the right side in the figure, and the roller bracket 151 is rotated clockwise about the convex cylindrical portions 158 and 158, that is, the transport roller 150. Is in the non-transport position. Further, the bent portions 57 and 57 of the lower frame 10 are positioned in the escape portions 91 and 91 of the slide plate 83, and the floating chassis 60 is connected to the fixed chassis 15 via the damper 11 (see FIG. 2). It is in a floating state.

  When the disc is at the playback position, as shown in FIG. 13, the sliding contact pin 87 of the lock member 81 is engaged with the inclined portion 119 of the switching plate 116, and the rotational force of the first motor 74 is applied to the second gear 108 and the first gear. This is transmitted to the pickup drive mechanism 61 via the three gears 109. In this state, when the second gear 108 rotates clockwise, the switching plate 116 is rotated clockwise to move the second gear 108 away from the third gear 109. However, the switching plate 116 is in sliding contact. It is held at the position of FIG. At this time, the restricting member 85 is located at the position shown in FIG. 8, and the protruding portion 95 of the slide plate 83 does not touch anywhere on the restricting member 85.

  When the disc ejection operation is performed from this state, the second gear 108 rotates in the clockwise direction, and the pickup 14 moves in the disc inner circumferential direction. Then, the pickup 14 moves to a position beyond the innermost peripheral portion of the data recording portion of the disk, and the lock member 81 is rotated counterclockwise by a part of the pickup 14.

  Then, as shown in FIG. 7, the sliding contact pin 87 of the lock member 81 is disengaged from the inclined portion 119 of the switching plate 116, the switching plate 116 rotates clockwise, and the small gear of the second gear 108 becomes the fourth gear 110. Meshes with the large gear.

  When the driving force of the first motor 74 is transmitted to the fourth gear 110 via each gear, the trigger member 84 (see FIG. 5) moves in the disc ejection direction by the rotation of the fourth gear 110. As the trigger member 84 moves, the slide plate 83 also moves in the disc ejection direction via a connecting member (not shown).

  As shown in FIG. 14, when the slide plate 83 moves in the disc ejection direction, the cam surface 93 comes into contact with the bent piece 162 of the roller bracket 151. In this state, the bent portions 57 and 57 of the lower frame 10 are still located in the escape portions 91 and 91 of the slide plate 83, and the floating chassis 60 is in a floating state with respect to the fixed chassis 15.

  As soon as the slide plate 83 moves before the cam surface 93 comes into contact with the bent piece 162 of the roller bracket 151, the restricting member 85 causes the protrusion 95 of the slide plate 83 to slide on the restricting member 85. The restricting member 85 abuts on the inclined surface 128 which is a part of the portion 127, and the inclined member 128 is pressed by the protrusion 95, and rotates in the clockwise direction in FIG.

  When the slide plate 83 further moves in the disc ejection direction, the projection 95 comes into sliding contact with the linear surface 129 from the inclined surface 128. Then, as shown in FIG. 15, the restricting member 85 finishes rotating, and is positioned at the position where the contact portion 126 approaches the contacted portion 10a, that is, the floating chassis restricting position. Even in this state, the floating chassis 60 is still in a floating state with respect to the fixed chassis 15.

  Then, when the slide plate 83 further moves in the disc ejection direction with the regulating member 85 positioned at the floating chassis regulating position, the cam surface 93 presses the bent piece 162 and pushes up the conveying roller 150 and the roller gear 154. To go. At this time, since the floating chassis 60 is still in a floating state with respect to the fixed chassis 15, the floating chassis 60 receives a reaction force from the bent piece 162 via the slide plate 83 and moves in the disk insertion direction. However, when the contact portion 126 of the restricting member 85 contacts the contacted portion 10a of the lower frame 10, the movement is restricted.

  Thus, by restricting the movement of the floating chassis 60 in the disk insertion direction, the slide plate 83 reliably pushes up the transport roller 150, and as the transport roller 150 approaches the disk transport position, the roller gear 154. Starts meshing with the seventh gear 115. Then, as shown in FIG. 6, the bent piece 162 is disengaged from the upper end of the cam surface 93, moves to the upper surface of the slide plate 83, and the roller gear 154 is moved in the same manner as the conveying roller 150 reaches the disk conveying position. As shown in FIG. 16, the meshing with the seventh gear 115 is completed.

  As described above, the restriction member 85 is positioned at the floating chassis restriction position, so that the roller gear 154 can be reliably engaged with the seventh gear 115. In this process, the engaging pin 143 of the clamper support 133 rises along the cam groove 89, and the clamper support 133 rotates in the clockwise direction in the drawing to separate the clamper 131 from the turntable 13.

  With the rotation of the clamper support 133, the pair of diamond holes 140, 140 of the clamper support 133 are engaged with the pair of extending pieces 30, 30 provided in the upper frame 7, as shown in FIG. The first piece 144 of the clamper support 133 is also fitted in the hole 56 of the lower frame 10 (indicated by a phantom line in FIG. 10). At this time, the bent portions 57 and 57 of the lower frame 10 are fitted to the slit portions 90 and 90 (see FIG. 16), and the floating chassis 60 is fixed to the fixed chassis 15.

  The driving force of the first motor 74 is transmitted to the transport roller 150 via the seventh gear 115 and the roller gear 154, and the transport roller 150 transports the disk D in the ejection direction.

  Thus, by attaching the roller bracket 151 to the fixed chassis 15, the weight of the floating chassis 60 can be reduced. As a result, the vibration white of the floating chassis 60 can be reduced, and the entire apparatus can be reduced in size and thickness. And material cost reduction can be achieved. Further, since the floating chassis 60 is not fixed by the floating chassis fixing means by the movement of the slide plate 83, the pickup driving motor 74 and the conveyance roller 150 can be connected dynamically, so that after the floating chassis 60 is fixed, Immediately the disk can be transported.

  Further, when the restriction member 85 is mounted on the floating chassis 60 and the slide plate 83 moves in one direction to move the roller bracket 151, the restriction member 85 moves to the restriction position, and the floating chassis 60 moves to the slide plate 83. Therefore, the roller gear 154 can be reliably meshed with the seventh gear 115, and the driving force of the motor 74 can be reliably applied to the transport roller 150. Can communicate.

  Furthermore, the slide plate 83 has a projection 95, and the regulating member 85 has a contact portion 126 and a cam-like slide contact portion 127 that slides on the projection 95 when the slide plate 83 moves in one direction. Then, it is rotatably attached to the floating chassis 60, and the protrusion 95 is slidably contacted with the sliding contact portion 127 by the movement of the slide plate 83 in one direction, so that the regulating member 85 is rotated, and the contact portion 126 is the lower frame. The mechanism can be simplified by moving the floating chassis 60 to a restricting position that restricts the movement of the floating chassis 60 relative to the fixed chassis 15 by abutting the ten abutted portions 10a.

  Further, the restricting member 85 has an arm portion 130, and when the arm portion 130 is pushed and returned by the slide plate 83 as the slide plate 83 returns in the other direction, a member such as a spring is provided. The restricting member 85 can be rotated and returned without being used.

  In the present embodiment, the bent piece 162 is provided on the right side plate 157 of the roller bracket 151, and the bent piece 162 is in sliding contact with the cam surface 93 of the slide plate 83. However, the present invention is not limited to this. Instead, the pin may be fixed by crimping instead of the bent piece 162.

  Next, another embodiment shown in FIGS. 18 to 23 will be described. In this embodiment, the roller bracket is attached to the upper frame of the fixed chassis, whereas the roller bracket is attached to the lower frame of the fixed chassis in the above embodiment. In general, when the disc player is attached to the audio equipment mounting portion of the vehicle, first, the fixed chassis 15 of the disc player is attached to a dedicated attachment case 170 as shown in FIG. The attachment case 170 includes a front panel 171 having operation buttons, a display unit, and the like on the front surface. The fixed chassis 15 is configured by combining the upper frame 7 and the lower frame 10 together as in the above embodiment (see FIG. 19). In this embodiment, a disk is inserted into the lower frame 10. Fixing pieces 172 and 172 are provided on the left and right sides of the front end portion, and a fixing piece 173 is also provided in the central portion of the rear end. Further, the attachment case 170 is provided with fixed portions 174, 174, 175 at portions corresponding to the fixed pieces 172, 172, 173, respectively. The fixed pieces 172, 172, 173 are fixed to the fixed portions 174 of the attachment case 170. , 174, 175 using a screw 176, the disc player and the attachment case 170 integrated in this way are mounted on the audio equipment mounting portion of the vehicle.

As shown in FIG. 19, the left and right fixing pieces 172 and 172 of the lower frame 10 have inverted L-shapes that extend upward from the front end portions of the left and right side plates and bend outwardly the extended end portions 172a. None, the rear end side fixing piece 173 is bent outward from the upper edge of the central portion of the rear side plate. The extension ends 172a and 172a and the rear end side fixing pieces 173 of the fixing pieces 172 and 172 are provided with screw holes.
The upper frame 7 has bracket mounting portions 177 bent downward from the left and right edges of the front end at positions in the vicinity of the left and right fixing pieces 172 and 172, and the shaft holes provided in these mounting portions 177 are used for the above-described implementation. The convex cylindrical part 158 (refer FIG. 11) of the roller bracket 151 (refer FIG. 11) similar to the form of this is supported rotatably.

  The upper frame 7 is further provided with a front mounting hole 178 and a rear mounting hole 179 as an engaging recess at the bent corners of the left and right side plates that are bent downward.

  On the other hand, as shown in FIG. 20, the lower frame 10 has an upper edge of left and right side plates bent upward, and an engaging convex portion 180, an inverted L-shaped front retaining piece 181 and an engaging convex portion 180, respectively. A rear retaining piece 182 located slightly forward is provided. Each front retaining piece 181 is located slightly behind the left and right fixed pieces 172, 172. There is a slit 183 that opens upward between the left and right fixed pieces 172 and the front retaining piece 181, and there are small notches 184 at the front ends of the left and right side plates, and the lower ends of these slits 183 and the notches 184 are provided. A virtual line to be connected becomes a boundary line between the side plate and the fixed piece 172.

Therefore, after each rear mounting hole 179 of the upper frame 7 is engaged with each engaging projection 180 of the lower frame 10, each front mounting hole 178 of the upper frame 7 is arranged inside the front retaining piece 181 of the lower frame 10. To be located.
Thereafter, as shown in FIG. 21, the tip horizontal portion of the front retaining piece 181 is bent inward in the horizontal direction and positioned on the lower edge of each front mounting hole 178. Further, when the left and right rear retaining pieces 182 are slightly bent inward (in the direction of the arrow) and positioned on the upper surface of the upper frame 7 as shown in FIG. 22, the rear mounting hole 179 and the engaging convex portion 180 are separated. Is prevented. In other words, the left and right front retaining pieces 181 and the lower edge of the front mounting hole 178, and the rear retaining pieces 182 and the upper surface of the upper frame keep the engagement state between the engagement convex portion 180 and the rear mounting hole 179. Means are configured. As shown in FIG. 21, in the state where the upper and lower frames 7 and 10 are combined, there is a slight gap 175 between the bracket mounting portion 177 provided on the upper frame 7 and the side plate of the lower frame 10. ing.

  In the state where the upper and lower frames 7 and 10 are combined, the bracket mounting portion 177 of the upper frame 7 is positioned inside and in the vicinity of the left and right fixing pieces 172 and 172 of the lower frame 10 as shown in FIG. (FIG. 23 shows only the right side).

The perspective view which shows a disc player. FIG. The top view which shows an upper unit. The top view which shows the state which removed the pick-up unit and the clamp mechanism from the lower unit. The top view which shows a pick-up unit. The side view which shows the relationship between a slide plate and peripheral components. The top view which shows a driving force transmission means. Plan view showing the regulating member The top view which shows a clamp mechanism. The left view which shows clamp operation | movement. The perspective view which shows a conveyance roller mechanism. The side view which shows the relationship between the slide board and clamper in a disc reproduction | regeneration state. The top view which shows the driving force transmission means in a disc reproduction | regeneration state. The side view which shows the relationship between a slide plate and peripheral components. The top view which shows the control member located in the floating chassis control position The side view which shows the relationship between a slide plate and peripheral components. The top view which shows a clamp mechanism. The disassembled perspective view which shows the attachment relationship of an attachment case and a disc reproducing | regenerating apparatus. The attachment disassembled perspective view which shows the relationship between an upper frame and a lower frame. The side view which shows the process in which an upper frame is attached to a lower frame. The top view which shows the bending state of a front retaining piece. Explanatory drawing which shows the bending state of a retaining piece. The perspective view which expands and partially shows the relationship between an upper frame and a lower frame.

Explanation of symbols

15 Fixed chassis 60 Floating chassis 74 First motor 84 Slide plate 85 Floating chassis restricting means (regulating member)
93 Roller position switching part (cam surface)
95 Protrusion 115 Connection gear (seventh gear)
126 Contact portion 127 Sliding contact portion 130 Arm portion 150 Conveying roller 151 Roller bracket 154 Roller gear F Floating chassis fixing means

Claims (3)

A fixed chassis that is a housing with a disk insertion slot;
A flat floating chassis supported in a movable manner through a plurality of dampers in the fixed chassis;
A turntable provided in the floating chassis for rotating the mounted disk;
A first position between the disk insertion slot and the floating chassis that contacts a lower surface of a disk placed on the turntable with a rotation axis directed in a direction orthogonal to a radial direction of the turntable; A roller bracket provided in the fixed chassis for rotatably supporting the transport roller so as to be movable between a second position spaced from the lower surface of the disk;
A driven gear attached to the roller bracket so as to interlock with the conveying roller;
A motor fixed to the floating chassis;
A pickup supported by the floating chassis so as to be slidable in a direction perpendicular to the rotation axis of the turntable;
A pickup driving mechanism for slidingly driving the pickup;
When the transport roller is in the first position, it meshes with the driven gear so as to be in contact with a direction parallel to the floating chassis, but when the transport roller is in the second position. A drive gear that disengages from the driven gear;
A coupled gear train that is driven by the motor and selectively transmits the driving force of the motor to the pickup drive mechanism and the drive gear;
The floating chassis is slidably mounted on a side edge of the floating chassis that faces in a direction orthogonal to the conveying roller, and the roller bracket is interlocked to engage the fixed chassis at a first position relative to the floating chassis. A slide plate for moving the transport roller to the first position, detaching from the fixed chassis at a second position relative to the floating chassis, and moving the transport roller to the second position;
The driven gear meshes with the drive gear while the slide plate moves relative to the floating chassis from the second position to the first position in conjunction with the slide of the slide plate with respect to the floating chassis. Floating chassis restricting means for restricting the movement of the floating chassis in the direction in which the drive gear exists with reference to the driven gear by contacting the fixed chassis immediately before the disc reproducing apparatus . The slide plate has a protrusion,
The floating chassis restricting means includes a contact portion that contacts the fixed chassis and a cam-shaped sliding contact portion that slides against the protrusion when the slide plate moves relative to the floating chassis. A member rotatably attached to the chassis, and the projection of the sliding plate is brought into sliding contact with the sliding contact portion by the movement of the slide plate to the first position, so that the floating chassis restricting means rotates, and the contact 2. The disk reproducing apparatus according to claim 1, wherein the contact portion moves to a restriction position for restricting movement of the floating chassis with respect to the fixed chassis by contact with the fixed chassis. 3. The floating chassis restricting means includes an arm portion, and the arm portion is pushed by the slide plate as the slide plate is moved to the second position, and the rotation is returned. The disc playback apparatus described in 1.