JPH073744B2 - Auto changer device for disk - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic changer device for a disc such as a compact disc (CD), and more particularly to an automatic changer device for a disc used in an automobile or the like which is easily affected by vibration.

2. Description of the Related Art A conventional vehicle-mounted CD autochanger device has a structure in which a chassis incorporating an autochanger mechanism and a player mechanism is supported in a case via a damper.
By using the above damper, the vibration of the car
It is intended to prevent "sound skipping" due to transmission to the optical pickup section of the player mechanism.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-described conventional device, even if the resonance frequency of the damper is set to be lower than 100 Hz, the most easily transmitted vibration (about 100 Hz) in an automobile cannot be sufficiently attenuated, and the tracking servo Despite the focus servo, vibration of about 100Hz was transmitted to the optical pickup and other parts, causing "sound skipping".

The present invention eliminates the above-mentioned conventional problems, and in particular,
The object of the present invention is to provide an automatic changer device for discs capable of sufficiently damping vibrations of about 100 Hz and preventing the occurrence of "sound skipping".

Means for Solving the Problems In order to achieve the above object, the present invention supports a substrate provided with a turntable and an optical pickup unit on a chassis for an autochanger via a first damper,
Further, the autochanger chassis is supported in the case through a second damper, and the resonance frequency of the first damper and the resonance frequency of the second damper are made different from each other.

Action The present invention has the above-described structure and supports the optical pickup section and the like in the case through the two types of dampers, so that the vibration transmitted to the optical pickup section can be sufficiently attenuated. It is possible to prevent "skipping".

EXAMPLE FIG. 1 and FIG. 2 show the upper surface and side surface of an embodiment of the present invention. In FIGS. 1 and 2, reference numeral 200 denotes a box-shaped case having an open top surface, 1 denotes a box-shaped chassis, and an automatic changer mechanism and a player mechanism, which will be described later, are incorporated in the chassis 1. 39 is a rubber damper having the shape shown in FIGS. 3A and 3B. This damper 39 is the chassis 1 described above.
It is attached to the hole of the side plate. 201 is a screw screwed into the screw hole of the case 200, and the tip of this screw 201 is inserted into the center hole 39A of the damper 39. A spring 202 has one end locked to the chassis 1 and the other end locked to the inner wall of the case 200. The chassis 1 is movably supported in the case 200 by a damper 39 and a spring 202. The reference numeral 21A is a plate provided on a lift table that moves up and down, and a magazine for a disk is locked on the plate 21A, and the magazine also moves up and down as the lift table moves up and down. Reference numeral 84 denotes a substrate that supports an optical pickup unit including a turntable 88 and a lens 90 of the player unit. This substrate 84 is an oil-filled damper to the chassis 50 of the player.
It is movably supported by 85 and a spring 86.

Thus, in this embodiment, the auto changer mechanism,
The chassis 1 incorporating the player mechanism is movably supported in the case 200, and the turntable 88 of the player unit, the optical pickup unit, and the like are movably supported with respect to the chassis 1 to prevent the influence of external vibration. It has a structure to be removed.

Next, the autochanger mechanism incorporated in the chassis 1 will be described in detail with reference to FIGS. 4 and 5.

In FIGS. 4 and 5, 1A and 1B are L-shaped chassis, and the box-shaped chassis 1 is configured by screwing the ends of the chassis 1A and 1B. Reference numeral 2 denotes a board mounted inside the chassis 1, and a motor 3 is fixed to the board 2. Reference numeral 4 is a worm gear fixed to the rotation shaft of the motor 3, 5 is a large gear rotatably supported in the center of the substrate 2, and 6A, 6B, 6C are gears rotatably supported by the substrate 2, The gears 6A, 6B, 6C are always meshed with the large gear 5. Reference numeral 7 denotes a gear rotatably supported by a shaft 8 defined on the base plate 2, and this gear 7 has a worm gear portion 7A which meshes with the worm gear 4 and a gear portion 7B which meshes with the gear 6A. Has been done. When the motor 3 is rotated, its rotational force is changed to the worm gear 4, the gear 7, the gear.
It is transmitted to the large gear 5 via 6A and further transmitted to the gears 6B and 6C. Reference numeral 9 denotes a gear-shaped rotating body, and this rotating body 9 is rotatably supported by a shaft 10 fixed to the substrate 2.
A gear portion 9A that meshes with the large gear 5 is integrally formed on the lower portion of the gear-shaped rotating body 9. Reference numeral 11 denotes a photocoupler fixed to the substrate 2, and the gear-shaped rotating body 9 is provided between a light emitting element and a light receiving element which constitute the photocoupler 11.
Intervenes. When the large gear 5 is rotationally driven by the motor 3, the rotating body 9 also rotates and the photocoupler 11 generates a pulse. Reference numeral 12 is a position-detecting microswitch fixed to the substrate 2, and 13A, 13B, and 13C are bearings supported in the holes of the substrate 2. 14A, 14B, 14C have pinion gears 15A, 15B, 1 at one end
5C is a fixed screw rod, and the lower ends of these screw rods 14A to 14C are supported by the bearings 13A to 13C, respectively. 16A, 16B,
16C is a protruding piece 1 of chassis 1A, 1B via leaf springs 17A, 17B, 17C.
A bearing supported in the holes of 8A, 18B, and 18C, and the above-mentioned screw rod
The upper ends of 14A to 14C are supported by the bearings 16A to 16C. In this way, the screw rods 14A to 14C are the protrusions 1 of the chassis 1A, 1B.
The bearings 16A to 16C supported by 8A to 18C and the bearings 13A to 13C supported by the substrate 2 are rotatably supported. The small gears 15A to 15C of the screw rods 14A to 14C mesh with the gears 6A to 6C. 19A and 19B are guide rods. One end of each of the guide rods 19A and 19B is inserted into the hole of the substrate 2, and the other end is a protrusion of the chassis 1A.
It is supported by being inserted into the holes of 20A and 20B.

Reference numeral 21 is an elevator, and a plate 21A is fixed to the upper surface of the elevator 21. Further, nuts 22A to 22C are supported on the lifting table 21. 23A to 23C are leaf springs that bias the nuts 22A to 22C upward. The nuts 22A to 22C are screwed onto the screw rods 14A to 14C. Reference numerals 24A and 24B are guide holes formed in the lifting table 21, and the guide rods 19A and 19B are inserted into the guide holes 24A and 24B. When the large gear 5 is driven to rotate by the motor 3, the gears 6A to 6C rotate,
As a result of rotation of the small gears 15A to 15C meshing with 6A to 6C, the screw rods 14A to 14C also rotate, and the elevating table 21 moves upward or downward (Fig. 6). 25A and 25B are pins as shown in Fig. 7A and B
26A, 26B is a lock piece rotatably supported on the lifting table 21, 27A, 27B is a spring for biasing the lock pieces 25A, 25B,
The lock pieces 25A, 25B are biased by the springs 27A, 27B,
Lock the magazine M placed on the lift table 21 (7th
(Figure A). 28A and 28B are cam pieces integrally formed with the chassis 1A and 1B, and when the lifting table 21 moves upward,
Since one ends of the lock pieces 25A, 25B come into contact with the cam pieces 28A, 28B, the lock pieces 25A, 25B rotate against the biasing force of the springs 27A, 27B to lock the magazine M on the lift table 21. Release (Fig. 7B). 29 is a micro switch attached to the chassis 1A.
When it moves to the uppermost part, it is driven by this lift table 21. Reference numeral 30 denotes a lever rotatably supported on one side of the lift table 21, and this lever 30 has a contact portion 30A that contacts the magazine when the magazine is placed on the lift table 21. It is formed integrally. Reference numeral 31 is a micro switch fixed to the lift table 21, and the micro switch 31 is driven by the contact portion 30A of the lever 30. 32 is a lever rotatably supported by the chassis 1A, and 33 is the lever 32 at one end.
Is a spring that is locked to one end of the chassis 1A and the other end is locked to a locking piece of the chassis 1A, 34 is a stopper integrally formed on the chassis 1A, and the lever 32 biased by the spring 33 is the stopper 34 The rotation is restricted by. 35 is a sliding plate slidably supported on the inner surface of the chassis 1B, 36 is a spring having one end locked to the sliding plate 35 and the other end locked to the locking part of the chassis 1B, The sliding plate 35 is urged by the spring 36 in the direction of arrow X in FIG. Reference numeral 37 is a driving piece attached to one end of the sliding plate 35, and the driving arm 37 drives the rotating arm of the magazine. A frame 38 is fixed to the upper part of the chassis 1A, 1B, and a magazine is inserted from a magazine insertion opening 38A formed by the frame 38. 39 is chassis 1
It is a rubber damper attached to the outer surface of A, 1B and is screwed to the case 200 that covers the outer surface of the chassis 1A, 1B.
1 is inserted into the center hole 39A of the damper 39 above, and the chassis 1
A, 1B, etc. are movably supported in the case 200.

In FIG. 5, reference numeral 40 denotes a player, and this player 40
Are screwed into the chassis 1. 41 is a roller support plate screwed to the chassis of the player 40, and 42A and 42B are bent portions formed by bending a part of the roller support plate 41. The bent portions 42A and 42B have bearings 43A and 43B. Is installed. A shaft 44 is rotatably supported by the bearings 43A and 43B, and a gear 44A is fixed to one end of the shaft 44. Reference numeral 45 is a roller rotatably supported by the above-mentioned chest 44, 46 is a shaft inserted into the long holes 47A, 47B of the bent portions 42A, 42B, and the driven rollers 48A, 48B are rotatably supported by the shaft 46. Has been done. Reference numeral 48C is a spring supported by the shaft 46, and the driven rollers 48A and 48B are biased toward the bent portions 42A and 42B by the elastic force of the spring 48C. The diameters of the driven rollers 48A, 48B on the central side are smaller than the diameters on the bent portions 42A, 42B side. 46A and 46B are springs, one end of which is locked to the bent portions 42A and 42B and the other end of which is locked to the shaft 46.The elastic force of the springs 46A and 46B causes
The shaft 46 is urged upward and driven rollers 48A, 48B
Is pressed against the roller 45. Reference numeral 49 is a gear rotatably supported by the bent portion 42B, and the gear 49 meshes with the gear 44A.

Next, the player 40 will be described. In FIGS. 8 to 11, 50 is a player chassis, 51 is a motor board, and a motor 52 is attached to the motor board 51.
Reference numeral 53 is a worm gear fixed to the rotating shaft of the motor 52, 54 is a gear rotatably supported by the motor substrate 51, and the gear 54 is a worm gear portion screwed to the worm gear 53.
54A and bevel gear 54B. 55 is a motor board 51
The gear 55 is rotatably supported by a bevel gear portion 55A and a gear portion 55B that mesh with the bevel gear portion 54B.
Composed of and. The motor board 51 is screwed to the chassis 50. Reference numeral 56 denotes a gear rotatably supported by a shaft planted on the side surface of the chassis 50. The gear 56 is a gear portion 56A meshing with the gear portion 55B of the gear 55 and another gear portion 56B.
Composed of and. 57 is a gear composed of gear parts 57A and 57B, and the gear part 57A meshes with the gear part 56A of the gear 56. Reference numeral 58 denotes a pin drive plate rotatably supported by a shaft 59 that supports the gear 57, and the pin drive plate 58 has a recess.
58A and 58B are formed. Reference numeral 60 denotes a leaf spring, and the pin drive plate 58 causes the gear 57 to move by the elastic force of the leaf spring 60.
Is pressed against the end surface of the through the washer 61.

The rotational force of the motor 52 is transmitted to the gear 57 via the worm gear 53, the gear 54, the gear 55, and the gear 56, and the gear 57 and the pin drive plate 58 rotate.

Reference numeral 62 denotes a rotating plate rotatably supported by a shaft 62E planted in the side plate of the chassis 50.
Gear portion 62A meshing with gear portion 57B of 57, the pin drive plate 58
Pins 62B and 62C and cam holes 62D that enter the recesses 58A and 58B are formed. Reference numeral 63 denotes a roller support plate. Pins 63A and 63B provided on the left and right of the roller support plate 63 are inserted into the holes of the side plates of the chassis 50, and the roller support plate 63 is rotatably supported by the chassis 50. 63C and 63D are bending plates integrally formed with the roller support plate 63, and the shaft 64 is supported by the bending plates 63C and 63D. 65A and 65B are driven rollers rotatably supported by the shaft 64.
The diameters of the bent plates 63C and 63D of the 65A and 65B are formed to be larger than the diameter of the central portion side. 66 is a spring supported by the shaft 64, and the driven rollers 65A and 65B are urged in the direction of the bending plates 63C and 63D by the elastic force of the spring 66. 67A,
67B is a disc insertion prevention member screwed to the roller support plate 63, 68A, 68B is a drive pin provided on the bent plate 63C, 63D, the drive pin 68B, through the hole of the side plate of the chassis 50, It is inserted into the cam hole 62D of the rotating plate 62. The inversion spring 69A has one end locked to the shaft 62E and the other end locked to the tip of the drive pin 68B, and 69B has one end locked to the side plate of the chassis 50 and the other end locked to the drive pin 68A. It is a reverse spring. 70A and 70B are sliders slidably supported on the inner surface of the side plate of the chassis 50.
There are formed inclined cam holes 71A, 71B into which the drive pins 68A, 68B are inserted. Reference numeral 72 denotes a pin implanted in the slider 70B. The pin 72 penetrates a long hole 73 formed in the side plate of the chassis 50 and projects outward. 74 is an arm rotatably supported on the side plate of the chassis 50,
The pin 72 is inserted into a long hole 74A formed in the arm 74. 75 is an arm rotatably supported by the side plate of the chassis 50, and the long hole 75A formed in this arm 75
The pin 76 implanted in the slider 70A is inserted in the. 77 is the plunger solenoid screwed to the side plate of the chassis 50, 77A is the movable piece of the plunger,
A pin 77B is planted at the tip of the movable piece 77A. 77
C is a spring that biases the movable piece 77A. 78 is a slider slidably supported on the side plate of the chassis 50,
The pin 77B of the movable piece 77A is inserted into the recess 78A of the slider 78.
Are engaged. 79A and 79B are bearings locked to the side plates of the chassis 50, and the shaft 80 is rotatably supported by the bearings 79A and 79B. 81 is a roller, this roller
81 is rotatably supported on the shaft 80. 80A
Is a gear attached to one end of the shaft 80, and this gear 80A meshes with the gear portion 57A of the gear 57. 50A is a bent plate part formed by bending a part of the bottom plate part of the chassis 50,
The bent plate portion 50A is parallel to the side plate of the chassis 50. 8
2 is a slider that is slidably supported by the bent plate 50A, 83
Is a continuous arm rotatably supported on the bottom plate of the chassis 50, and the holes 83A, 83B formed in the connecting arm 83.
In addition, the pin 82A of the slider 82 and the slider 70B
Pin 70C is inserted. A locking portion for locking a substrate 84, which will be described later, is formed at the tip of the sliders 70A and 70B82.

Reference numeral 84 is a substrate movably supported by the chassis 50 by an oil-filled damper 85, and reference numeral 86 is a spring having one end locked to the chassis 50 and the other end locked to the substrate 84. A player unit 87 is fixed to the substrate 84. The player unit 87 includes a turntable 88, a motor 89 for rotating the turntable 88, and a lens 90 for condensing light emitted from a laser diode on a disc. An optical system including the above, a motor 91 for moving the lens 90 in the radial direction of the disc, a detector for detecting the light reflected by the disc, and the like. A clamp support plate 92 is rotatably supported by the substrate 84, and a clamp plate 93 is rotatably supported by the clamp support plate 92. 92B and 92C are stopper pins implanted in the clamp support plate 92,
The disc transferred into the player 40 comes into contact with the stopper pins 92B and 92C to stop the transfer. The hole edge of the central hole of the disk is held by the turntable 88 and the clamp plate 93. Reference numeral 94 is a cover plate that covers the upper end opening of the chassis 50, and the cover plate 94 is screwed to the chassis 50. Reference numeral 95 is a disc insertion preventing member attached to the lid plate 94, 96 is a printed circuit board attached to the lid plate 94, and the printed circuit board 96 is provided with two light receiving elements 96A and 96B. Reference numeral 97 denotes a printed circuit board screwed to the chassis 50. The printed circuit board 97 has two light emitting elements 97A,
97B and micro switch 97C are installed. The light receiving elements 96A and 96B of the printed board 96 and the printed board 9
The light-emitting elements 97A and 97B of 7 constitute a photocoupler.
Insertion or ejection of the disc into the player is detected by the pair of photocouplers.

Reference numeral 98 denotes a gear support plate screwed to the cover plate 94 as shown in FIG. 11, and this gear support plate 98 has the gear 49
A gear 99 that meshes with is rotatably supported. A gear 100 is rotatably supported by a gear support plate 98, and the gear 100 is composed of a gear portion 100A and a gear portion 100B that mesh with the gear 99 and the gear portion 56A of the gear 56. 101 is an intermittent gear rotatably supported by the gear support plate 98,
The intermittent gear 101 can mesh with the gear portion 100B of the gear 100. As shown in FIG. 12, stopper pieces 101B and 101C are provided on one surface of the intermittent gear 101, and the shaft 101 is provided on the other surface.
A is integrally formed. The shaft 101A is inserted into a center hole of a roller 35B rotatably supported by a long hole 35A of a sliding plate 35 of the autochanger. 102 is a gear support plate 98
It is an L-shaped arm rotatably supported by a plunger 77 in a hole 102A formed at one end of the arm 102.
Pin 77B of is inserted. 102B is a pin implanted at the other end of the arm 102, and this pin 102B is the intermittent gear 101
Can be engaged with a stopper piece 101B provided on one surface of the. A spring 103 has one end locked to the gear support plate 98 and the other end locked to the arm 102. Reference numeral 104 denotes an arm rotatably supported coaxially with the arm 102, and a pin 104A engageable with the recess 35C of the sliding plate 35 is planted at the tip of the arm 104. A spring 105 has one end locked to the arm 102 and the other end locked to the arm 104. The arm 102 is the plunger 77.
When driven by the arm 102, the arm 102 is rotated, and the bent piece 102C of the arm 102 also drives the arm 104, so that the arm 104 rotates in the same direction as the arm 102.

The above auto changer and player are the central processing unit CP
U, random access memory RAM, read only memory
It is controlled by a controller such as ROM.

13 to 16 show a magazine. Fig. 13-Fig.
In FIG. 16, reference numeral 150 denotes a housing whose bottom surface and front surface are open, and 151
Is a bottom plate that closes the opening on the lower surface of the housing 150, and this bottom plate 151 is attached to the housing 150 with screws. Reference numeral 152 denotes a plurality of partition plates stacked in the front opening of the housing 150, and disks are inserted and removed between the partition plates 152. Reference numeral 153 is a turning lever, and a plurality of turning levers 153 are rotatably supported by the housing 150. When the rotating lever 153 is rotated, the disk stored in the housing 150 is pushed and the housing 1
The disc is ejected from the front opening of 50. 154 is case 1
It is a lock plate integrally formed at the lower end of a groove 155 formed on both side surfaces of 50, and this lock plate 154 is locked by lock pieces 25A, 25B of the autochanger.

FIG. 15 shows a state where the bottom plate 151 of the magazine is removed. In FIG. 15, reference numerals 156, 157 and 158 are arcuate projections formed in the housing 150, and the projections 156 to 158 have a plurality of arcuate grooves 156A, 15 into which the outer periphery of the disk 159 is inserted.
7A and 158A are formed in parallel. Reference numeral 160 denotes a shaft integrally formed with the housing 150, and the plurality of rotating levers 153 are rotatably supported on the shaft 160. Reference numeral 152 is the partition plate, and recesses 162A and 162B are formed on both sides of the partition plate 152. 163A and 163B are spacer portions integrally formed on both sides of the partition plate 152, and one spacer portion 163A has an L-shaped locking portion 164 and a protrusion integrally formed on the inner wall of the housing 150. A groove portion 165 to be inserted into the 150A is formed, and a bearing portion 166 and a protrusion 167 are formed on the other spacer portion 163B. Reference numeral 168 denotes a ridge formed on the front and back sides of the partition plate 152. The ridge 168 is high on the spacer portions 163A, 163B side, and the partition plate 152 is high.
Is slightly inclined so that the central portion side of the disc becomes lower, and only the outer peripheral portion of the disk 159 contacts the ridge 168. 170 is a leaf spring, and one side of this leaf spring 170 has a split spring piece 1
71 is integrally formed. The tip of the spring piece 171 is bent into an L shape. Reference numeral 172 is a bearing portion formed on the leaf spring 170. A restriction plate 173 has a hole 174 in which the projection 167 of the partition plate 152 is inserted. 175 is a shaft, and the shaft 175 is inserted into the bearing portion 166 of each partition plate 152 and the bearing portion 166 of the leaf spring 170, and both ends of the shaft 175 are formed in the holes formed in the housing 150 and the bottom plate 151, respectively. Is inserted. Reference numeral 176 denotes a leaf spring screwed to the inner surface of the side plate of the housing 150. A split spring piece 177 is integrally formed on one side of the leaf spring 176, and a split spring is also provided on the other side. The piece 178 is integrally formed. The tip of the spring piece 177 is bent into an L shape. The tip of the spring piece 178 of the leaf spring 176 is inserted into the locking portion 164 of the partition plate 152. The other side of the partition plate 152, one side of which is supported by the shaft 175,
It is pulled by the elastic force of the spring piece 178 of the leaf spring 176.

When the turning lever 153 is turned in the state shown in FIG.
As shown in FIG. 16, the rear portion of the disc 159 is a rotating lever 1
It is pushed by 53 and pushed out from between the partition plates 152. In this case, the spring pieces 171 and 177 of the leaf springs 170 and 176 are restored after being pressed by the bearing disk 159, and the disk 169 is pushed forward by this restoring force. When the disc 159 is stored in the magazine after the performance is finished, the spring pieces 171 and 177 are restored after being pressed by the supporting disc 159, and the disc 159 is biased and stored by this restoring force.

Next, the operation of the above embodiment will be described. Prior to inserting the magazine into the autochanger, the platform 21 is at the top. When the lift table 21 is located at the top, one end of the lever 30 rotatably supported by the lift table 21 is in contact with the lever 32 supported by the chassis 1A. The contact portion 30A at the other end is located above the lift table 21. When the magazine is inserted from the frame body 38 in this state and the magazine is pressed downward against the elastic force of the spring 33, the contact portion 30A of the lever 30 is pushed by this magazine and the lever 30 rotates. The lever 30 rotates and the contact portion 30
When A moves to almost the same plane as the lift table 21, this contact portion 30A turns on the micro switch 31 (t _{1 in} FIG. 17). When the micro switch 31 is turned on, the motor 3 rotates, and the rotational driving force of the motor 3 causes the worm gear 4, the gear 7, and the gear 6A.
Is transmitted to the large gear 5 via the gear, and the large gear 5 rotates, and the gears 6B and 6C meshing with the large gear 5 also rotate. Therefore, the small gears 15A, 15B, 15C fixed to the screw rods 14A, 14B, 14C are gear wheels.
Since it is rotated by 6A, 6B, and 6C, the screw rods 14A to 14C also rotate. When the screw rods 14A to 14C rotate, these screw rods 14A to 1C
The lifting table 21 provided with nuts 22A to 22C screwed to 4C is guided by the guide rods 19A and 19B and descends. When the platform 21 begins to descend, the micro switch installed on the chassis 1A
29 turns OFF (t _{2 in} Fig. 17). While the lift table 21 is descending, the forcible drive by the cam pieces 28A, 28B of the lock pieces 25A, 25B disappears, and the lock pieces 25A, 25B are biased by the springs 27A, 27B to rotate, and the lock plate 154 of the magazine 154 And the magazine is locked to the lift table 21. When the lift table 21 reaches the bottom, the micro switch 12 provided on the board 2 is lifted.
The micro switch 12 is turned on by being driven by 21, the power supply to the motor 3 is cut off, and the rotation of the motor 3 is stopped (No.
17 t ₃ ). When a predetermined time elapses after the power supply to the motor 3 is cut off, a reverse current is started to be supplied to the motor 3, the motor 3 rotates in the reverse direction, and the lift 21 starts to rise (t _{4 in} FIG. 17). After the motor 3 starts to rotate in the reverse direction,
When a predetermined number of pulses are output from 11, the reverse current supply to the motor 3 is stopped, and the lifting of the lift table 21 is stopped (t _{5 in} FIG. 17). The stop position of the lift table 21 becomes the reference position (the position for taking out the uppermost disc stored in the magazine).

After the rotation of the motor 3 is stopped (t _{5 in} FIG. 17) and a predetermined time has elapsed, the solenoid 77 of the plunger is energized (t _{6 in} FIG. 17). When the movable piece 77A is attracted by energizing the solenoid 77 of the plunger, the pin 77B is attached to the movable piece 77A.
The arm 102 connected by is rotated, and the arm 104 is also rotated by the bent piece 102C of the arm 102. When the arm 102 rotates as described above, the pin 102B at the tip of the arm 102 and the stopper piece 101B provided on the intermittent gear 101 are provided.
Disengages with. When the arm 104 rotates as described above, the pin 104A of the arm 104 and the recess 35C of the sliding plate 35 are disengaged from each other. Pin 104A of arm 104 and recess 3 of sliding plate 35
When the engagement with 5C is released, the sliding plate 35
Slides a little. Therefore, the intermittent gear 101 engaged with the elongated hole 35A of the sliding plate 35 via the shaft 101A and the roller 35B slightly rotates, and the intermittent gear 101 meshes with the gear portion 100B of the gear 100. When a predetermined time elapses after the plunger 77 is energized, a current is supplied to the motor 52 and the motor 52 starts rotating in a predetermined direction (t _{7 in} FIG. 17).

When the motor 52 rotates, the rotational driving force of this motor 52 becomes
It is transmitted to the intermittent gear 101 via the worm gear 53, the gear 54, the gear 55, the gear 56, and the gear 100, and the intermittent gear 101 rotates. When the intermittent gear 101 rotates, the shaft 10 of the intermittent gear 101
The sliding plate 35 engaging with 1A slides, and the driving piece 37 attached to this sliding plate plate 35 pushes one of the rotating levers 153 of the magazine to rotate the rotating lever 153. Pivoting lever 153
When is rotated, the disk 159 housed in the magazine is pushed by the rotating lever 153, and the disk 159 is pushed out. Further, since the rotational driving force of the motor 52 is transmitted to the gear 80A via the gear 57 and also transmitted to the gear 44A via the gear 100, the gear 99, and the gear 49, the roller 81, the driven rollers 65A, 65B, Also, the roller 45 and the driven rollers 48A and 48B rotate. Therefore, the disc 159 pushed out from the magazine is first rotated by the rotating roller 45 and the driven rollers 48A, 4A.
Roller that is held by 8B and transferred, and is further rotating
It is sandwiched between 81 and the driven rollers 65A and 65B and transferred. During the transfer of the disk 169, the light emitting element 97A changes to the light receiving element 96A.
The light emitted toward the laser beam is blocked by the disk 159 (t _{8 in} FIG. 17). Furthermore, from the light emitting element 97B to the light receiving element 9
The light emitted toward 6B is blocked by the transferred disk 159 (t _{9 in} FIG. 17). When the disk 159 is further transferred, the disk 15 between the light emitting element 97A and the light receiving element 96A is moved.
The light is turned off by 9 (t _{10 in} Fig. 17). Disc 157
Is transferred to a predetermined position. When the intermittent gear 101 rotates by a predetermined angle, the stopper piece 101C formed on the intermittent gear 101 comes into contact with the pin 102B of the arm 102 to prevent the intermittent gear 101 from rotating. After a predetermined time from t ₁₀ , the solenoid 77 of the plunger is de-energized (t _{11 in} FIG. 17). When the power supply to the solenoid 77 is cut off, the slider 78 moves in the arrow X'direction. Therefore, the gear portion 6 of the rotating plate 62 that is pulled by the protrusion 78B of the slider 78 and is prohibited from meshing with the gear portion 57B of the gear 57.
2A meshes with the gear portion 57B of the rotating gear 57, and the rotating plate 62 rotates. At this time, the pin drive plate 58 also rotates.

As described above, when the rotary plate 62 is rotated by the rotational driving force of the motor 52, the drive pin 68B of the roller support plate 63 inserted into the hole of the rotary plate 62 is pushed downward by the rotary plate 62. . Therefore, the roll support plate 63 rotates about the pins 63A and 63B as fulcrums. When the roller support plate 63 rotates, the driven rollers 65A and 65B supported by the roller support plate 63 also move downward. Therefore, the disc 159 moves downward, and the center hole of the disc 159 fits into the protruding portion of the turntable 88. When the roller support plate 63 rotates, this roller support plate 63
Micro switch 97C is turned on by 63 (see Fig. 17
t ₁₁ ) Since the drive pins 63A and 63B of the roller support plate 63 are inserted in the inclined cam holes 71A and 71B of the sliders 70A and 70B, respectively, when the drive pins 68A and 68B of the roller support plate 63 move downward. Driven by the drive pins 68A, 68B, the sliders 70A, 70B slide in the arrow X'direction. In addition, the slider 8 connected to the slider 70B via the connecting arm 83
2 slides in the direction of arrow X. When the sliders 70A, 70B and the slider 82 slide in the directions of arrows X'and X, respectively, the board 84, which is held by the tip holding portions of these sliders 70A, 70B, 82 and whose position is regulated, can be moved by the oil-filled damper 85. Will be supported by. The arm 74 is a slider 70.
Since the slider 70B is connected to the slider 70B through the pin 72 implanted in B, the arm 72 rotates clockwise when the slider 70B slides in the arrow X'direction. The arm 74 is for restricting the rotation of the clamp support plate 92, and
When 74 rotates clockwise as above, the clamp support plate
92 is rotated by being biased by the spring 92A, and the clamp plate 93 pushes the hole edge of the central hole of the disk 159 fitted to the protruding portion of the turntable 88. Therefore, the disc 159 is held by the turntable 88 and the clamp plate 93.

As described above, when the rotary plate 62 is rotated by the rotational driving force of the motor 52, the driven rollers 65A and 65B move downward, and thus the disk 159 moves downward and fits into the protruding portion of the turntable 88. The clamp plate 93 moves downward and the clamp plate 93 and the turntable 88 make a disc.
Holding 169, the substrate 84 becomes movable. Also,
When the micro switch 97C is turned on and a predetermined time has elapsed, the current supply to the motor 52 is cut off and the rotation of the motor 52 is stopped (t _{12 in} FIG. 17).

Thus, loading of the disc 169 is completed, and thereafter the disc 169 is reproduced. The reproduction of the disc 169 is performed by rotating the turntable 88 with the motor 89 to rotate the disc 169 and detecting the light emitted from the lens 90 and reflected by the disc 169 via the lens 90.

Next, the operation of ejecting the disc 159 will be described.

When the reproduction of the disc 159 is completed and the disc eject is instructed during the reproduction (t _{13 in} FIG. 17), the motor 52 rotates in the reverse direction after a predetermined time (t _{14 in} FIG. 17). When the motor 52 rotates in the reverse direction, the gear 57 rotates, the pin drive plate 58 rotates together with the gear 57, drives the pin 62C of the rotating plate 62, rotates the rotating plate 62, and rotates the rotating plate 62. Gear part 62A of gear 5
The gear portion 57B of 7 is engaged. Therefore, the rotating plate 62 rotates. When the rotary plate 62 rotates, the drive pin 68B is driven upward by the rotary plate 62. Therefore, the roller support plate 63
Rotates, the driven rollers 65A and 65B move upward, lift the disk 159 upward, and hold the disk 159 with the rotating roller 81. When the drive pin 68B is driven upward, the sliders 70A, 70B and the slider 82 slide in the directions of arrows X, X'to regulate the position of the board 84, and the arm 72 rotates counterclockwise. Clamp support plate 92
Rotate upwards.

The disk 159 lifted up by the driven rollers 65A and 65B is transferred in the arrow X'direction by the roller 81 rotated by the rotational driving force of the motor 52. Further, the disk 159 is held by the roller 45 rotated by the rotational driving force of the motor 52 and the driven rollers 48A and 48B, and transferred in the magazine direction. During this transfer, the light receiving element 96A is shielded from light by the disk 159 (see FIG. 17).
t ₁₆ ), the light receiving element 96B has finished shielding light (t _{17 in} FIG. ₁₇ ),
Further, the light shielding of the light receiving element 96A ends (t _{18 in} FIG. 17).
When a predetermined time elapses after the end of the light shielding of the light receiving element 96A is detected, the power supply to the motor 52 is cut off and the rotation of the motor 52 is stopped (t _{19 in} FIG. ₁₇ ). The disk 159 is stored in the magazine before the rotation of the motor 52 is stopped.

Here, when reproduction of another disc is instructed, the motor 3
Rotates, the lift table 21 moves upward, and the magazine moves upward. When the motor 3 rotates, the rotating body 9 also rotates,
A pulse is output from the photocoupler 11. When the pulse output from the photo-coupler 11 for counting a predetermined number, the rotation of the motor 3 is stopped, FIG. 17 of t ₆ after the operation.

When the reproduction of the disc is completed and the magazine eject switch (not shown) is operated (t _{20 in} FIG. 17), the motor 3
Is energized to rotate the motor 3. Therefore, the lift 21
Rises. While the lift 21 is rising, the lock piece
One end of 25A, 25B abuts on a cam piece formed on the chassis 1A, 1B, and the lock pieces 25A, 25B are rotated against the urging force of the springs 27A, 27B to unlock the magazine. Further lift
When 21 is lifted, one end of the lever 30 supported by the lift 21 abuts on the lever 32 supported by the chassis 1A.
Therefore, the lever 30 rotates in response to the elevation of the lift table 21, and the contact portion 30A of the lever 30 moves above the surface of the lift table 21. Therefore, a part of the magazine placed on the lift table 21 is lifted by the contact portion 30A, and the magazine can be easily taken out from the magazine insertion opening 38A. Note the magazine is lifted by the contact portion 30A of the lever 30, the micro switch 31 is OFF (t ₂₁ of FIG. 17). If the lifting platform 21 is raised to the top, the micro switch 29 is turned ON, the motor 3 is stopped (t ₂₂ of FIG. 17).

18 (A) and 18 (B) show the vibration transmission characteristics of the above embodiment. In FIG. 18 (A), 1 indicates the vibration transmission characteristic from the case 200 to the chassis 1,
Vibration of a frequency that matches the resonance frequency fob of the damper 39 that movably supports the chassis 1 inside is easily transmitted to the chassis 1. When the vibration frequency becomes higher than the resonance frequency fob, the vibration transmissibility from the case 200 to the chassis 1 Will fall. In FIG. 18 (A), m indicates the vibration transmission characteristic from the chassis 50 of the player 40 to the substrate 84 that supports the turntable 88 and the like, and the oil fill that movably supports the substrate 84 on the chassis 50. Vibration of a frequency matching the resonance frequency foa of the damper 85 is easily transmitted to the board 84, and when the vibration frequency becomes higher than the resonance frequency foa, the chassis 50 moves to the board 84.
The transmissibility of vibration to is reduced. In the above embodiment, the case 20
A chassis 50 of a player, which movably supports the chassis 1 in 0 through a damper 39 and is fixed to the chassis 1.
Since the substrate 84 is movably supported via the oil-filled damper 85, the vibration transmission characteristic from the case 200 to the substrate 84 is
A characteristic (FIG. 18B) obtained by combining the characteristics 1 and m of FIG. 18 (A) is obtained, and in particular, vibration transmission of a frequency higher than the vicinity of the resonance frequency foa can be greatly attenuated.

Generally, in a car, a vibration of about 100 Hz is easily transmitted, and when this vibration of about 100 Hz is transmitted to a vehicle-mounted CD auto changer, "skipping" is likely to occur despite the tracking servo and the focus servo. In addition, compact disc CD easily resonates near 100 Hz. On the other hand, in this embodiment, because of the double damper structure,
Vibration near 100Hz can be greatly attenuated, and "sound skipping" etc. can be prevented. In order to increase the vibration damping amount near 100 Hz, it is preferable that the resonance frequencies of the first and second dampers are both set to 50 Hz or less.

EFFECTS OF THE INVENTION Since the present invention has the double damper structure as described above, "sound skipping" occurs even when used in an environment where vibration is likely to occur, such as in an automobile.
Has the advantage of being able to prevent

[Brief description of drawings]

FIG. 1 is a top view of an automatic disc changer device according to an embodiment of the present invention, FIG. 2 is a side view showing a part of the device in section, and FIGS. 3A and 3B are sectional views of a damper used in the device. Figure and rear view, Figure 4 is a side view of the main part of the device,
FIG. 5 is an exploded perspective view of the same, FIG. 6 is a top view of a part of the apparatus, FIGS. 7A and 7B are front views of a magazine lock mechanism of the apparatus, FIGS. 8 and 9 are for the disc. FIG. 10 is a side view of the player of the autochanger, FIG. 10 is an exploded perspective view of the player, FIG. 11 is a side view of a part of the player, FIG. 12 is a side view of the intermittent gear portion of the player, and FIG. Perspective view of the magazine used in the disk autochanger device, No. 14
Fig. 15 is an exploded perspective view of the main part of the magazine, Figs. 15 and 16 are top views with the bottom plate of the magazine removed, and Fig. 17 is an explanatory view of the operation of the disc autochanger device, Fig. 18A,
B is a diagram showing a vibration transmission characteristic of the device. 1A, 1B ... Chassis, 2 ... Board, 3 ... Motor, 4 ...
… Worm gears, 5 …… Large gears, 6A, 6B, 6C …… Gears, 7
…… Gear, 7A …… Worm gear, 7B …… Gear, 8 ...
… Axis, 9 …… Rotating body, 10 …… Axis, 11 …… Photo coupler,
12 …… Micro switch, 13A, 13B, 13C …… Bearing, 14A, 1
4B, 14C …… Screw rod, 15A, 15B, 15C …… Spindle, 16A, 16B, 1
6C …… Bearing, 17A, 17B, 17C …… Flat spring, 18A, 18B, 18C ……
Protrusion, 19A, 19B …… Guide rod, 20A, 20B …… Protrusion, 21 ……
Lifting platform, 21A ... plate, 22A, 22B, 22C ... nuts, 23A, 23B,
23C ... leaf spring, 24A, 24B ... guide hole, 25A, 25B ... lock piece, 26A, 26B ... pin, 27A, 27B ... spring, 28A, 28B
...... Cam piece, 29 ...... micro switch, 30 ...... lever,
30A ... Contact part, 31 ... Micro switch, 32 ... Lever, 33 ... Spring, 34 ... Stopper, 35 ... Sliding plate, 35
A: long hole, 35B: roller, 35C: recess, 36: spring, 37: drive piece, 38: frame, 38A: magazine insertion slot, 39: damper, 40: player, 41 ...... Roller support plate, 42A, 42B ...... Bent portion, 43A, 43B ...... Bearing, 44 ...... Shaft, 44A ...... Gear, 45 ...... Roller, 46 ...... Shaft, 46A, 46B ...... Spring, 47A, 47B …… Long hole, 48A, 48B ……
Driven roller, 48C …… Spring, 49 …… Gear, 50 ……
Chassis, 50A …… Bending plate part, 51 …… Motor board, 52…
… Motor, 53 …… Worm gear, 54 …… Gear, 54A ……
Worm gear, 54B ... Bevel gear, 55 ... Gear, 55A
...... Bevel gear section, 55B ...... Gear section, 56 ...... Gear, 56A, 56B
...... Gear part, 57 …… Gear, 57A, 57B …… Gear part, 58 ……
Pin drive plate, 58A, 58B ... Recess, 59 ... Shaft, 60 ... Leaf spring, 61 ... Washer, 62 ... Rotating plate, 62A ... Gear part, 62B, 62C ... Pin, 62D ... Cam hole, 62E ... Axis, 63
...... Roller support plate, 63A, 63B ...... Pin, 63C, 63D …… Bending plate, 64 …… Shaft, 65A, 65B …… Driven roller, 66 ……
Spring, 67A, 67B ... Disc insertion prevention member, 68A, 6
8B: drive pin, 69A, 69B ... reversing spring, 70A, 70B ... slider, 70C ... pin, 71A, 71B ... cam hole, 72 ... pin, 73 ... long hole, 74 ... arm, 75A ...... long hole, 76 ......
Pin, 77 ... Solenoid, 77A ... Movable piece, 77B ... Pin, 77C ... Spring, 78 ... Slider, 78A ... Concave, 79A, 79B ... Bearing, 80 ... Shaft, 80A ... Gear,
81 ... Roller, 82 ... Slider, 82A ... Pin, 83 ...
… Coupling arm, 83A, 83B… Hole, 84 …… Board, 85 …… Oil-filled damper, 86 …… Spring, 87 …… Player unit, 88 …… Turntable, 89 …… Motor, 90 …… Lens, 91: motor, 92: clamp support plate, 93: clamp plate, 94: lid plate, 95: disc insertion prevention member, 96
...... Printed circuit board, 96A, 96B …… Light receiving element, 97 …… Printed circuit board, 97A, 97B …… Light emitting element, 97C …… Micro switch, 98 …… Gear, 100 …… Gear, 100A, 100B …… Gear section , 101 …… intermittent gear, 101A …… shaft, 101B, 101C …… stopper piece, 102 …… arm, 102A …… hole, 102B …… pin, 103 …… spring, 104 …… arm, 104A …… pin, 105 ... Spring, 150 ... Enclosure, 151 ... Bottom plate, 152 ... Partition plate, 153 ... Rotating lever, 154 ... Lock plate, 155 ... Groove, 156,157,158 ... Ridge, 156A, 157A , 15
8A ... Groove, 159 ... Disc, 160 ... Shaft, 162A, 162B ...
… Recesses, 163A, 163B …… Spacer, 164 …… Locking parts, 16
5 …… groove part, 166 …… bearing part, 167 …… projection, 168 …… projection, 170 …… plate spring, 171 …… spring piece, 172 …… bearing part, 1
73 …… Regulation plate, 174 …… Hole, 175 …… Shaft, 176 …… Leaf spring, 177 …… Spring piece, 178 …… Spring piece, 200 …… Case, 2
01 …… screw, 202 …… spring.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiaki Nakagawa 4-3-1, Tsunashimahigashi, Kohoku-ku, Yokohama-shi, Kanagawa Matsushita Communication Industrial Co., Ltd. (72) Yoshihiro Arimura Tsunashima-higashi, Kohoku-ku, Yokohama-shi, Kanagawa 4-3-1 Matsushita Communication Industry Co., Ltd. (72) Inventor Yutaka Hino 4-3-1 Tsunashima East, Kohoku Ward, Yokohama City, Kanagawa Prefecture Matsushita Communication Industry Co., Ltd.

Claims (2)

[Claims] 1. A substrate provided with a turntable and an optical pickup unit is supported on a chassis for an autochanger via a first damper, and the chassis for the autochanger is supported in a case via a second damper, An automatic changer device for a disc in which the resonance frequency of the first damper is different from the resonance frequency of the second damper. 2. The resonance frequency of the first and second dampers is 50 Hz.
An automatic changer device for a disk according to claim 1, which is smaller and has a large vibration damping amount in the vicinity of 100 Hz.