JP2009134851A - Disk reproducing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a miniaturized and thinned disk reproducing system with reduced cost, whose disk carrying roller is properly driven by a motor for driving a pickup. <P>SOLUTION: When a roller bracket 142 is mounted on a fixed chassis 15, and the roller bracket 142 moves the carrying roller 141 to a disk carrying unit by moving a slide plate 84, fixing a floating chassis 60 by a floating chassis fixing means and dynamic connection of the first motor 74 and the carrying roller 141 by a driving power transmission means 83 proceed simultaneously. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a disk reproducing apparatus that is miniaturized, thinned, and reduced in material cost in a disk reproducing apparatus that appropriately drives a disk conveying roller with a pickup driving motor.

  Conventionally, various disk reproducing apparatuses have been proposed in which a reciprocating movement of a pickup, position selection of a disk transport roller, and rotational driving of the roller 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), an insertion detection means (not shown), and the like are attached to the upper chassis (12), and the roller arm (27) A conveying roller (28) is supported on the surface.

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 slider (15) in the disc insertion direction. By the movement of the slider (15), the clamper (23) is separated from the disk, and the lock member (18) fixes the floating chassis to the fixed chassis. Subsequently, the motor (M) rotationally drives the transport roller (28), and the disk is ejected by the transport roller (28).
JP 2006-18915 A

  In the configuration disclosed in Japanese Patent Application Laid-Open No. 2006-18915, in order to facilitate power transmission from the pickup driving motor to the conveyance roller, a roller bracket that supports the conveyance roller is also attached to the floating chassis together with the motor and the pickup. Yes. Since the roller bracket and the transport roller are relatively heavy parts, the weight of the floating part is increased by attaching them to the floating chassis. The amplitude at the time of vibration of the floating portion 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.

  In addition, in a configuration where the pickup and the disk transport roller are appropriately driven by a common motor, simply attaching a roller bracket that supports the transport roller to the fixed chassis side to reduce the weight of the floating part will fix the floating chassis. In a state where it is not fixed with respect to the chassis, it becomes difficult to make a dynamic connection between the floating motor and the fixed conveyance roller. In this case, it is conceivable that the motor and the transport roller are dynamically connected after the floating chassis is fixed to the fixed chassis. However, in this case, 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. It is possible to move the disk to the fixed chassis side and reduce the weight of the floating part, thereby reducing the size and thickness of the entire disk reproducing device and making it easy to be used for in-vehicle use. To do.

  The roller bracket that supports the transport roller is attached to the fixed chassis side, and the slide plate attached to one side plate of the floating chassis is moved by the first motor for driving the pickup that is also attached to the floating chassis. By the movement, the transport roller is moved from the non-transport position to the disk transport position by a roller position switching unit provided on the slide plate. Further, a driving force transmission means is configured including a coupling gear attached to the floating chassis and a roller gear provided on one end side of the conveying roller, and the driving force of the first motor is conveyed via the driving force transmission means. It shall be transmitted to the roller. When the slide plate is moved, the floating chassis is fixed to the fixed chassis by the floating fixing means, and when the transport roller is moved to the disk transport position, the roller gear is engaged with the connecting gear, and the first motor And the conveying roller are connected dynamically.

  The connection gear may be disposed in the vicinity of the slide plate.

  The roller position switching unit may be a cam surface that slides on the roller bracket and switches the position of the transport roller.

  The roller bracket may be attached to the fixed chassis so as to be rotatable.

  A part of the floating chassis fixing means may be provided on the slide plate.

    The left and right side plates of either the upper frame or the lower frame which are combined with each other to form the fixed chassis extend from the front end portion on the side where the disk is inserted and removed, and the extended end portion is a predetermined fixed portion. And a bracket mounting portion for mounting the roller bracket at a position near the fixing piece is provided on the left and right sides of the other frame, and the extension is attached by attaching the extending end to the fixed portion. It is preferable that the displacement generated at the extended end is absorbed by the fixed piece.

  The left and right side plates of either the frame provided with the fixed piece or the frame provided with the bracket mounting portion are provided with an engaging convex portion, and the other frame is provided with an engaging concave portion that engages with the engaging convex portion, respectively. It is preferable to provide a disengagement preventing means for maintaining the engagement state between the engagement convex portion and the engagement concave portion.

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. Further, since the floating chassis is fixed by the floating chassis fixing means by the movement of the slide plate and the first motor and the conveying roller are dynamically connected by the driving force transmitting means, the disk is immediately after the floating chassis is fixed. Can be started.
Further, since the roller gear is moved to the disk conveying position by applying the slide plate on the floating chassis side to the roller bracket or the conveying roller, the roller gear can be engaged with the connecting gear when the floating chassis is not completely fixed.

  Further, the roller position switching portion slides on the roller bracket to form a cam surface that moves the conveying roller from the non-conveying position to the disk conveying position, thereby rotating the roller bracket directly with the slide plate. And the mechanism can be simplified.

  Furthermore, the roller bracket is pivotally attached to the fixed chassis, thereby simplifying the mechanism for moving the transport roller from the non-transport position to the disk transport position or from the disk transport position to the non-transport position, thereby smoothing the operation. Can be.

  Further, by providing a part of the floating fixing means on the slide plate, the floating chassis is fixed or released and the transfer roller is moved from the non-transport position to the disk transport position or from the disk transport position to the non-transport position. The operation timing can be easily adjusted.

By the way, when this type of disk playback device is mounted on, for example, an audio equipment mounting portion of a vehicle, generally, a dedicated attachment case is used, and a fixed piece provided on a fixed chassis is screwed on a fixed portion provided on the attachment case. The attachment case and the disc playback device are integrated and fixed to the audio device mounting portion by fixing with a stopper or the like. In this case, if there is a dimensional mismatch between the fixed portion and the fixed piece, even if the mismatch is slight, the fixed chassis is deformed when screwed. This deformation has propagated to the bracket mounting portion for mounting the roller bracket, resulting in problems such as a decrease in roller bracket mounting accuracy and difficulty in mounting the roller bracket.
Therefore, the left and right side plates of either the upper frame or the lower frame constituting the fixed chassis are fixed to extend from the front end portion on the side where the disk is inserted and attach the extended end portion to a predetermined fixed portion. A bracket mounting portion for mounting the roller bracket is provided on the left and right sides of the other frame in the vicinity of the fixed piece, and the extension portion is generated by mounting the extended end to the fixed portion. By absorbing the above-mentioned displacement in the fixed piece, it is possible to prevent the displacement of the extension end from affecting the bracket mounting portion even though the fixed piece and the bracket mounting portion are in the vicinity of each other. Can be resolved.

  In addition, when the upper and lower frames are joined together by screwing, there is a problem that the fixed chassis is likely to be distorted when screwed, but there is an engagement convex part on one of the left and right side plates of the upper and lower frame and this engagement with the other frame By providing engagement recesses that engage with the projections, and by providing disengagement prevention means for maintaining the engagement state between the engagement projections and the engagement recesses, the upper and lower frames are joined together in the fixed chassis. Since no external pressure is applied, it is possible to reduce the thickness of the metal plate that is the material of the fixed chassis, thereby reducing costs and weight.

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 formed to be bent inward and rearward from the hole 56 and inward from the right side plate 25, 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 lock member 82 that locks the pickup 14, the driving force transmission means 83 that transmits the driving force of the first motor 74, and the first motor 74, and moves back and forth in the figure. The slide plate 84 and a trigger member 85 that detects immediately before the disk is chucked on the turntable 13 are configured. Although not shown, the lock member 82 is provided with a spring for urging the member clockwise, and the trigger member 85 is provided with a reversal spring.
The lock member 82, the driving force transmission means 83, and the trigger member 85 are disposed on the lower surface side of the flat plate portion 65, and the slide plate 84 is disposed on the right side plate 67.

  The lock member 82 is provided with a rotation fulcrum 86 at the substantially center, a sliding contact pin 87 on one side, and a lock portion 88 on the other side. The lock member 82 is urged to rotate clockwise by a spring (not shown).

  FIG. 6 is a side view showing the relationship between the slide plate 84 and its peripheral components. A cam groove 89 is provided at the center upper portion of the slide plate 84 in the drawing. Below the cam groove 89, a pair of through-holes 94, which are slit portions 90 and 91 having a narrow vertical width and escape portions 92 and 93 having a wide vertical direction, are front and rear engaged portions. 95 is provided. Further, a cam surface 96 as a roller position switching portion is provided at the left end of the slide plate 84 in FIG. Further, as shown in FIG. 5, the slide plate 84 is provided with a pressed portion 97 that protrudes to the left in the drawing.

  The trigger member 85 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 transmission means 83 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. is 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 96 of the slide plate 84.

  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.

  As shown in FIGS. 8 and 9, the clamp mechanism 6 is attached to the clamper 122, a thin support plate 123 that rotatably supports the clamper 122, and the support plate 123, and rotates in the vertical direction. (A rotation center line is indicated by an alternate long and short dash line) and a clamper support 124 that contacts and separates the clamper 122 from the turntable 13.

  As shown in FIG. 9, the clamper 122 has a shaft portion 125 on the upper side in the drawing and a substantially frustoconical protrusion 126 that fits in the center hole of the disk on the lower side in the drawing. Have a taper 127 for centering the disk.

  The clamper 122 rotatably supports the shaft portion 125 on one end side of the support plate 123, and the support plate 123 is fixed to the clamper support 124 on the other end side, and the disc is formed by the turntable 13 and the clamper 122. When clamping the disc, the shaft end of the clamper 122 is elastically pressed by a part of the support plate 123 to apply a disc clamping pressure between the turntable 13 and the clamper 122.

  As shown in FIG. 8, the clamper support 124 is made of a sheet metal elongated in the left-right direction, and has side plates 129, 130 bent downward at the left and right ends of the flat plate 128. The flat plate 128 is provided with a pair of rhombus holes 131 and 132 which are substantially rhombic first and second upper engaging portions, and the straight holes 133 are respectively formed in the rhombus holes 131 and 132 at the left and right corners in the drawing. , 134 are formed. A rear edge 135 of the clamper support 124 in the drawing is formed so as to be slightly inclined toward the back from the center to the left and right. Further, an engagement pin 136 is attached to the front end portion of the right side plate 130 in the figure, and this engagement pin 136 is fitted in the cam groove 89 (see FIG. 6) of the slide plate 84.

  As shown in FIG. 9, the left side plate 129 partially extends downward, and the lower end of the extension is formed in a bifurcated shape. Is a second piece 138. Further, the left and right side plates 129 and 130 (only the left side plate 129 is shown in FIG. 9) are provided with shaft holes 139, respectively. The shaft holes 139 are formed on the left and right side plates 66 and 67 of the floating chassis 60 (see FIG. 5). ) Are engaged with protrusions (not shown), respectively, and the clamper support 124 is rotatable around these protrusions.

  The center axis of rotation of the clamper support 124 with respect to the floating chassis 60 (the line connecting the centers of both shaft holes 139) is located at 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 135 of the clamper support 124 is slightly inclined toward the inner side from the center to the left and right.

  As shown in FIGS. 4 and 10, the transport roller mechanism 12 includes a transport roller 141 and a roller bracket 142.

  The transport roller 141 is configured by inserting a metal shaft 144 through a pair of synthetic rubber tapered cylinders 143 that gradually become smaller in diameter from the outer end to the inner end. Both ends of the shaft 144 protrude from the outer end of the tapered cylindrical body 143. One end of the protruding shaft 144 is provided with a roller gear 145 which is a part of the driving force transmitting means 83 (see FIG. 5) and the other end. Each has a collar 146 attached thereto.

  The roller bracket 142 is made of a metal plate. The roller bracket 142 has left and right side plates 148 bent upward at the left and right ends of a connecting plate 147 that is long to the left and right. It is extended to. The left right side plate 148 has convex cylindrical portions 149 and 149 formed by drawing at substantially intermediate portions on the inner surface sides, and the convex cylindrical portions 149 and 149 are respectively connected to the left and right side plates 24 of the lower frame 10 (see FIG. 2). 25 is fitted into a groove 150 (only one is indicated by an imaginary line) formed in 25, and is mounted so as to be rotatable up and down with the convex cylindrical portions 149 and 149 as fulcrums. Further, both ends of the shaft 144 of the conveying roller 141 are rotatably supported by the extending portion between the left and right side plates 148.

  The rear edge of the connecting plate 147 is a mountain-folded edge 151 that is bent toward the back surface side. The mountain-folded edge portion 151 has a V-shaped concave shape that is substantially bilaterally symmetric in the plan view, but the inclination angle is a slight one of about 1 ° with respect to the axial center line of the roller. Further, a pair of left and right bent portions 152, 152 bent upward are provided at the front edge of the connecting plate 147. These bent portions 152, 152 are located at the upper position when the transport roller 141 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. 10, a bent piece 153 bent at a substantially right angle toward the outside is provided at the innermost part of the right side plate 148 of the roller bracket 142. The roller bracket 142 is always urged by a spring (not shown) in the direction in which the conveying roller 141 is raised.

  Also, as shown in FIG. 12, a pair of guide portions 158 and 158 are provided on a part of the bottom plate 23 of the frame 10, and when the slide plate 84 moves in the disc ejection direction, the slide plate 84 is moved to both guide portions 158 and 158. 158 between them.

Next, the operation of the mechanism unit 1 of the disc player will be described.
FIG. 11 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 122. In this state, the slide plate 84 is located on the right side in the drawing, and the roller bracket 142 is rotated clockwise around the convex cylindrical portions 149 and 149, that is, the transport roller 141. Is in the non-transport position. Further, the bent portions 57 and 57 of the lower frame 10 are positioned in the escape portions 94 and 95 of the slide plate 84, 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. 12, the sliding contact pin 87 of the lock member 82 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. The pin 87 holds the position shown in FIG.

  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 82 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 82 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 85 (see FIG. 5) moves in the disc ejection direction by the rotation of the fourth gear 110. As the trigger member 85 moves, the slide plate 84 also moves in the disc ejection direction via a connecting member (not shown).

  As shown in FIG. 13, as soon as the slide plate 84 moves in the disc ejection direction, the cam surface 96 comes into contact with the bent piece 153 of the roller bracket 142. In this state, the bent portions 57 and 57 of the lower frame 10 are still located in the escape portions 94 and 95 of the slide plate 84, and the floating chassis 60 is in a floating state with respect to the fixed chassis 15.

  When the slide plate 84 further moves in the disc ejection direction, the cam surface 96 pushes up the bent piece 153, and when the conveying roller 141 reaches the disc conveying position, the roller gear 145 starts to mesh with the seventh gear 115. To do. As shown in FIG. 6, the bent piece 153 moves away from the upper end of the cam surface 96 and moves to the upper surface of the slide plate 84, and the roller gear 145 completes the engagement with the seventh gear 115 as shown in FIG. In this process, the engaging pin 136 of the clamper support 124 rises along the cam groove 89, and the clamper support 124 rotates clockwise in the drawing to separate the clamper 122 from the turntable 13.

  As the clamper support 124 rotates, the pair of rhombus holes 131 and 132 of the clamper support 124 are engaged with the pair of extending pieces 30 and 30 provided in the upper frame 7 as shown in FIG. The first piece 137 of the clamper support 124 is also fitted into the hole 56 of the lower frame 10 (indicated by a phantom line in FIG. 9). At this time, the bent portions 57 and 57 of the lower frame 10 are fitted to the slit portions 90 and 91 (see FIG. 14), 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 141 via the seventh gear 115 and the roller gear 145, and the transport roller 141 transports the disk D in the ejection direction.

  Thus, by attaching the roller bracket 142 that supports the transport roller 141 to the lower frame 10 on the fixed chassis 15 side, the weight of the floating chassis 60 can be reduced. As a result, the vibration resistance of the floating chassis 60 can be reduced, and the entire apparatus can be reduced in size and thickness.

  Further, before the floating chassis 60 is fixed to the fixed chassis 15, the cam surface 96 comes into contact with the bent piece 153 of the roller bracket 142, so that at least the movement of the cam surface 96 is restricted by the bent piece 153. . Accordingly, the seventh gear 115 and the roller gear 145 can be meshed with each other before the floating chassis 60 is completely fixed to the fixed chassis 15, so that the first motor 74 and the transport roller 141 are dynamically connected. The timing for starting the conveyance of the disk is not delayed.

  Further, by attaching the roller bracket 142 to the lower frame 10 so as to be rotatable up and down, a mechanism for moving the transport roller 141 from the non-transport position to the transport position or from the transport position to the non-transport position can be simplified. The moving operation can be made smooth.

  Further, a cam surface 96 is provided at the end of the slide plate 84, and the bent piece 153 of the roller bracket 142 is slid on the cam surface 96 so as to press and move the transport roller 141 from the non-transport position to the transport position. Since the roller bracket 142 is directly rotated by the slide plate 84, the mechanism for rotating the roller bracket 142 can be simplified.

  Further, since the slide plate 84 is sandwiched between the pair of guide portions 158 and 158 provided in the lower frame 10, the seventh gear 115 and the roller gear 145 are more reliably engaged.

  In this embodiment, the bent piece 153 is provided on the right side plate 148 of the roller bracket 142, and the bent piece 153 is in sliding contact with the cam surface 96 of the slide plate 84. However, the present invention is not limited to this. In place of the bent piece 153, a pin may be crimped and fixed.

  Next, another embodiment shown in FIGS. 16 to 20 will be described. 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 160 as shown in FIG. The attachment case 160 includes a front panel 161 having operation buttons, a display unit, and the like on the front side. The fixed chassis 15 is configured by combining the upper frame 7 and the lower frame 10 as in the above embodiment (see FIG. 17). In this embodiment, a disk is inserted into the lower frame 10. Fixing pieces 162 and 162 are provided on the left and right sides of the front end portion, and a fixing piece 163 is also provided in the center portion of the rear end. In addition, the attachment case 160 is provided with fixed portions 164, 164, and 165 at portions corresponding to the fixing pieces 162, 162, and 163, respectively, and the fixing pieces 162, 162, and 163 are fixed to the fixed portion 164 of the attachment case 160. , 164, 165 using a screw 166, and then the integrated disc player and attachment case 160 are mounted on the audio equipment mounting portion of the vehicle.

As shown in FIG. 17, the left and right fixing pieces 162, 162 of the lower frame 10 have an inverted L-shape that extends upward from the front end portions of the left and right side plates and is bent outwardly at the extending end portion 162a. None, the rear end side fixing piece 163 is bent outward from the upper edge of the central portion of the rear side plate. The extension ends 162a and 162a and the rear end side fixing pieces 163 of the fixing pieces 162 and 162 are provided with screw holes.
The upper frame 7 has bracket mounting portions 167 bent downward from the left and right edges of the front end at positions near the left and right fixing pieces 162 and 162, and the above-described implementation is performed using shaft holes provided in these mounting portions 167. The convex cylindrical part 149 (refer FIG. 10) of the roller bracket 142 (refer FIG. 10) similar to the form of this is supported rotatably.

  The upper frame 7 is further provided with a front mounting hole 168 and a rear mounting hole 169 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. 18, the lower frame 10 has upper and lower side plates that are bent upward, and as shown in FIG. 18, an engagement projection 170, an inverted L-shaped front retaining piece 171 and an engagement projection 170, respectively. A rear retaining piece 172 located slightly forward is provided. Each front retaining piece 171 is located slightly behind the left and right fixed pieces 162 and 162. There is a slit 173 that opens upward between the left and right fixing pieces 162 and the front retaining piece 171, and there are small notches 174 at the front ends of the left and right side plates. An imaginary line to be connected becomes a boundary line between the side plate and the fixed piece 162.

Therefore, as shown in FIG. 18, after the rear mounting holes 169 of the upper frame 7 are engaged with the engaging projections 170 of the lower frame 10, the front mounting holes 168 of the upper frame 7 are moved to the lower frame 10. It is located inside the front retaining piece 171.
After that, as shown in FIG. 19, the tip horizontal portion of the front retaining piece 171 is bent inward in the horizontal direction and is positioned on the lower edge of each front mounting hole 168. Further, when the left and right rear retaining pieces 172 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. 20, the rear mounting hole 169 and the engaging convex portion 170 are separated. Is prevented. That is, the left and right front retaining pieces 171 and the lower edge of the front mounting hole 168, and the rear retaining pieces 172 and the upper surface of the upper frame keep the engagement state between the engaging convex portion 170 and the rear mounting hole 169, thus preventing separation. Means are configured. As shown in FIG. 19, 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 167 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 167 of the upper frame 7 is positioned inside and in the vicinity of the left and right fixing pieces 162 and 162 of the lower frame 10 as shown in FIG. (FIG. 21 shows only the right side).

  The disc player completed by combining the upper and lower frames 7 and 10 in this way is integrated with the attachment case 160 by attaching the fixing pieces 162 and 163 to the fixed portions 164 and 165 of the attachment case 160. When the fixed pieces 162 and 163 are attached to the fixed portions 164 and 165, the extended end portion 162a is displaced due to a dimensional mismatch between the fixed portion 164 and the extended end portions 162a of the left and right fixed pieces 162. However, the displacement is absorbed on the fixed piece 162 side from the boundary line between the side surface of the lower frame 10 and the fixed piece 162 (the imaginary line connecting the lower end of the slit 173 and the notch 174), and the influence is exerted on the side plate. It doesn't reach. In addition, the influence does not reach the bracket mounting portion 167 provided on the upper frame 7 side.

  In addition, since a slight gap 175 is provided between the bracket mounting portion 167 provided on the upper frame 7 and the side plate of the lower frame 10, the deformation of the fixing piece 162 is more reliably transmitted to the bracket mounting portion 167. Can be suppressed. In addition, the said effect can fully be show | played only by providing the said clearance gap 175 in at least one of the left-right bracket attaching part 167 and the lower frame 10 side plate.

  Further, the upper and lower frames 7 and 10 are not united by screwing, and the respective rear mounting holes 169 provided in the upper frame 7 are engaged with the respective engaging projections 170 of the lower frame 10, and then the mounting holes are mounted by the disengagement preventing means. By maintaining the engagement state between 169 and the engagement convex portion 170, excessive external pressure is not applied to the frames 7 and 10 when the upper and lower frames 7 and 10 are combined. Accordingly, it is possible to reduce the thickness of the metal plate that is the material of the frame, thereby reducing costs and weight.

  16 and the following embodiments have been described on the assumption that the bracket mounting portion 167 is provided on the upper frame 7 and the fixing pieces 162, 162, and 163 are provided on the lower frame 10, the fixing pieces are provided on the upper frame 7, and the brackets are provided on the lower frame 10. A mounting portion may be provided.

  In addition, the upper frame 7 and the lower frame 10 are combined by engaging the front and rear mounting holes 169 of the upper frame 7 with the front retaining pieces 171 and the engaging projections 170 of the lower frame 10. However, the attachment means for both frames 7 and 10 may be screwed. In addition, the engaging convex portion that engages with the engaging convex portion 170 may be a depression instead of the rear mounting hole 169.

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. 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 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

7 Upper frame 10 Lower frame 13 Turntable 14 Pickup 15 Fixed chassis 60 Floating chassis 74 First motor 83 Driving force transmitting means 84 Slide plate 96 Roller position switching portion (cam surface)
102 Second motor 115 Connection gear (seventh gear)
122 Clamper 141 Conveying roller 142 Roller bracket 145 Roller gear 162 Fixed piece 162a Extension end 164 Fixed portion 167 Bracket mounting portion 169
Rear mounting hole (engagement recess)
170
Engaging projection 171
Front retaining piece (detachment prevention means)
172
Rear retaining piece (detachment prevention means)

Claims (7)

A fixed chassis (15);
The fixed chassis equipped with a pickup (14) for reading information recorded on a disk, a first motor (74) for driving the pickup, a turntable (13), and a second motor (102) for driving the turntable A floating chassis (60) supported in a floating state,
A slide plate (84) attached to one side plate of the floating chassis and reciprocally driven by the first motor to separate the clamper (122) from the turntable;
A conveying roller (141) for transmitting the driving force of the first motor via the driving force transmitting means (83) at the disk conveying position and conveying the disk toward the reproducing position or the take-out position;
A roller bracket (142) that rotatably supports the transport roller and selectively positions the transport roller at a disk transport position or a non-transport position by movement of the slide plate;
Floating chassis fixing means for appropriately fixing the floating chassis to the fixed chassis by moving the slide plate,
The roller bracket is attached to the fixed chassis, and the slide plate has a roller position switching unit (96) that moves the transport roller from a non-transport position to a disk transport position by movement thereof, and the driving force transmitting means includes: A connection gear (115) attached to the floating chassis and rotated by the first motor, and a roller gear (one) provided at one end of the transport roller and meshing with the connection gear when the transport roller moves to the disk transport position. 145).   The disk reproducing apparatus according to claim 1, wherein the connecting gear is disposed in the vicinity of the slide plate.   2. The disk reproducing apparatus according to claim 1, wherein the roller position switching portion is a cam surface that slides on the roller bracket and switches the position of the transport roller from a non-transport position to a disk transport position.   The disk reproducing apparatus according to claim 1, wherein the roller bracket is rotatably attached to the fixed chassis.   2. The disk reproducing apparatus according to claim 1, wherein a part of the floating chassis fixing means is provided on the slide plate.   The left and right side plates of any one of the upper frame (7) and the lower frame (10) which are combined with each other to form the fixed chassis extend from the front end portion on the side into which the disk is inserted, and the extended end portion Bracket mounting for mounting the roller bracket on the left and right sides of the other frame on the left and right sides of the other frame is provided for mounting (162a) to a predetermined fixed portion (164,164). 2. The disc reproducing apparatus according to claim 1, wherein a portion (167) is provided, and the displacement generated in the extended end due to the attachment of the extended end to the fixed portion is absorbed in the fixed piece. .   The engaging convex part (170) is engaged with the left and right side plates of either the frame provided with the fixing piece or the frame provided with the bracket mounting part, and the engaging concave part (169 is engaged with the engaging convex part on the other frame. And a disengagement prevention means (171, 172) for holding the engagement state between the engagement convex portion and the engagement concave portion.