JPH0758576B2 - Disc loading device for disc player - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc loading device, which is integrated with a disc changer, for pulling a disc and guiding it to a disc clamp position.

[Conventional technology]

2. Description of the Related Art In recent car audio systems and the like, a disc player integrally provided with a disc changer has been put into practical use.

In this type of disc player with integrated disc changer, for example, a disc cartridge C as shown in FIG.
Is used, and a plurality of discs DS are stored in the disc cartridge C. This disk cartridge C
When the disk is mounted, the lifting / lowering operation unit 100 searches the disk, and the pair of drawing rollers 101a and 101b pulls out the predetermined disk DS. This lifting operation unit
The 100 is equipped with a clamper 102, a disc clamp mechanism including a clamp arm 103 that rotatably supports the clamp 102, and a disc support table 107.

Further, at the position where the raising / lowering operation unit 100 descends, there is a disc drive unit having a turntable 104 driven by a motor for rotating the disc DS, an optical pickup 105 for reproducing information facing the disc DS, and the like. It is provided.

When the disc DS is pulled out from the disc cartridge C, the raising / lowering operation unit 100 holding the disc descends, and the disc D
The disk S is clamped on the turntable 104 by the clamper 102 while the S is installed on the turntable 104.

[Problems to be Solved by the Invention]

In this type of disc player, the disc DS is sandwiched by the draw-in rollers 101a and 101b that are driven to rotate and guided into the elevating operation unit 100. Disk D at this time
When S swings, its tip may hit the clamper 102 and other members, which may prevent complete disk loading (retraction). Therefore, conventionally, another guide roller 106 is provided behind the pull-in roller 101a,
This guides the tip of the disc DS so that it cannot be lifted, and prevents the disc DS from hitting the clamper 102 or the like.

However, in the disc changer integrated disc player shown in FIG. 13, after the disc DS is introduced into the raising / lowering operation unit 100, the raising / lowering operation unit 100 descends to the disc playing unit where the turntable 104 and the like are located, The DS is installed on the turntable 104, but at this time, it is necessary to let the pull-in roller 101a escape to a position where it does not hit the disc DS. Therefore, it is necessary to release the guide roller 106 together with the pull-in roller 101a.
By providing a mechanism for letting a and 106 escape upward at the same time, the mechanism of the lifting / lowering operation unit 100 is extremely complicated.

Further, in the case of the guide roller 106, since the guide roller 106 extends over the entire length in the lifting operation unit 100 in the direction orthogonal to the paper surface of FIG. 13, the space in the lifting operation unit 100 is restricted by providing the guide roller 106. , It will also hinder the placement of other parts.

The present invention solves the above-mentioned problems, and prevents the tip of the disk drawn in by the drawing mechanism from hitting a member such as a clamper, and further avoids the need to release the guide even when the disk reaches a position where it can be clamped. It is an object of the present invention to provide a disc loading device for a disc player.

[Means for Solving the Problems]

A disc loading device according to the present invention is a disc player provided with a pull-in member for pulling in a disc and a disc clamp mechanism positioned in the pull-in direction by the pull-in member. It is placed in the disc pull-in path during pulling in to a position where it can be clamped by the guide member, guides the disc that is being pulled in by the pulling member, and is placed at a position where it will be disengaged from the disc when it reaches the position where it can be clamped by the clamp mechanism. A disk guide is provided.

[Work]

In the above-mentioned disc loading device, the disc in the process of being pulled in by the pulling member is guided by the disc guide, and the tip of the disc is prevented from swaying so that it does not hit a member such as a clamper. Further, when the disc is completely retracted to the clamp position, the disc guide comes to a position to be disengaged from the disc, so that when the disc is clamped on the turntable, it is not necessary to release the guide.

〔Example〕

 Examples of the present invention will be described below.

FIG. 1 is an external perspective view showing the entire structure of a disc changer-integrated disc player, FIG. 2 is a perspective view showing a cartridge mounting portion and a disc playing portion therein, and FIG. 3 is a perspective view showing a lifting operation portion. FIG. 4 is a perspective view showing the arrangement position of the disc guide, and FIGS. 5A, 5B and 5C are three-sided views showing the disc guide.

The disc changer-integrated disc player is composed of a cartridge mounting portion indicated by D and a disc playing portion indicated by E. As shown in FIG. 1, a disc cartridge C accommodating a plurality of discs (compact discs in the illustrated embodiment) is inserted into the cartridge mounting portion D from the front. A cartridge table 30 is installed below the disc mounting portion D. The cartridge table 30 is fixed to the bottom plate 34, and the disc cartridge C is mounted while being guided by the cartridge table 30. A pressure roller 31 is provided on a ceiling plate 32 of the apparatus body. The pressing rollers 31 are biased by leaf springs 33, respectively, and the loaded cartridge C is pushed against the cartridge table 30 by the biasing force of the leaf springs 33. A lock mechanism for locking the loaded disc cartridge C and an eject mechanism for ejecting the disc cartridge are provided below the cartridge table 30.

As shown in FIG. 2, a disc drive unit 40 is arranged in the disc playing portion E adjacent to the cartridge mounting portion D. The disk drive unit 40 is the bottom plate 34
It is fixed side by side with the cartridge table 30 on the surface. The disk drive unit 40 is provided with a turntable 41, an optical pickup 42, and a clamper support member 43. A pair of left and right clamper support members 43 are provided, and each of them has a clamper 80 to be described later.
A V groove 43a for supporting (see FIG. 3) is formed.
The disk drive unit 40 is arranged at the lowest portion in the entire apparatus shown in FIG. 1, and the disk DS pulled out from the disk cartridge C by the ascending / descending operation unit 60, which will be described later, is carried to the lowest portion. The center of the disc is placed on the turntable 41 and clamped by the clamper. And by the power of the motor turntable
The disc is rotated together with 41, and the information recorded on the disc is reproduced by the optical pickup 42 which moves along the guide shaft 44.

As shown in FIG. 1, in the illustrated embodiment, the cartridge mounting portion D and the disc playing portion E are provided with the ceiling plate 32, the bottom plate 34, and the left and right side plates connecting the ceiling plate 32 and the floor plate 34. It is provided in the unit Y surrounded by 35a and 35b. And the ceiling plate 32, the floor plate 34 and the side plates 35a, 35
The unit Y surrounded by b is supported by a housing provided outside these units. That is, the case is the bottom case
36 and side casings 37a and 37b fixed thereto. The unit Y is levitationally supported on the housing by a plurality of floating dampers 38a, 38b, 38c. The floating damper is a rubber bag whose inside is filled with air or liquid. FIG. 1 assumes that the bottom plate 34 and the bottom case 36 are installed in a horizontal posture, and the side plates 35a and 35b are made to move to the side case 37 by a suspension spring 39 arranged vertically.
Suspended from a and 37b.

As shown in FIGS. 1 and 2, the above-mentioned unit Y
Lifting mechanisms 50 are provided at three locations inside. The lifting mechanism 50 includes a guide shaft 51, a lifting screw 52, and a gear 53 fixed to the lifting screw 52.
It consists of and. The gears 53 provided on each of the three lifting mechanisms 50 are rotationally driven in synchronization with each other by a drive mechanism (not shown) provided on the lower surface of the bottom plate 34. The lifting / lowering operation unit 60 is vertically driven in the unit Y by the lifting / lowering mechanisms 50 at these three locations.

As shown in FIG. 3, the ascending / descending operation unit 60 is provided with guide holes 61 and female screw holes 62 adjacent thereto at three positions. The guide shaft 51 of the lifting mechanism 50 is inserted into each guide hole 61 provided in the lifting operation unit 60, and the lifting screw 52 is screwed into each female screw hole 62. The gear 53 is driven by the drive mechanism provided on the lower side of the bottom plate 34, and the respective lifting screws 52 of the three lifting mechanisms 50 rotate in synchronization, so that the lifting operation unit 60 shown in FIG. It is driven up and down in the unit Y. By this elevating operation, the elevating operation section 60 can move up and down to the search operation position for selecting and taking out any of the disks inserted in the disk cartridge C and the disk playing position at the lowest position. .

As shown in FIG. 3, the lifting plate 60 is provided with a support plate 13. The disc ejecting member 25 is supported by a guide pin 26 provided on the support plate 13 so as to be linearly movable in the ef direction. A drive mechanism 10 including a motor and a gear group is mounted on the support plate 13. In this drive mechanism 10, when the gear group is driven by the motor, the drive pin 10b provided on the drive gear 10a slides in the groove 25a of the disc ejecting member 25, whereby the disc ejecting member 25 e-f. You can drive in the direction.
A return spring 63 is provided between the disc ejecting member 25 and the support plate 13, and the disc ejecting member 25
Is always biased in the return direction (e direction). Further, a disc pressing piece 25b is provided on the left end of the disc ejecting member 25 in the figure.
In addition, the eject drive protrusion 25c is integrally formed. The disc pressing piece 25b is for ejecting the disc DS from the inside of the cartridge C, and the eject drive protrusion 25c is for ejecting the cartridge C by driving an eject mechanism provided below the cartridge mounting portion D. Is. Further, the power of the drive mechanism 10 is transmitted to the upper disc drawing roller 66 via the gear group. When the motor in the drive mechanism 10 is started, both the disc ejecting member 25 and the disc drawing roller 66 are driven. As shown in FIG. 3, both ends of the upper pulling roller 66 are supported by a swing lever 67. The swing lever 67 is swingably supported with a pin 67a as a fulcrum. Also swing lever 67
Is urged downward by a spring 68, and a disc narrow pressure is set between the upper drawing roller 66 and the lower drawing roller 69 by this urging force.
The lower pull-in roller 69 is rotatably supported without moving up and down. The upper pull-in roller
A projecting portion 66 a projecting from the swing lever 67 is provided at the end of 66. As shown in FIG. 1, the bottom plate 34 is provided with a roller restricting piece 70. When the elevating / lowering part 60 descends to the disc playing position, the roller restricting piece 70 is contacted with the projecting portion 66a, and the swing lever is moved. By the rotation of 67, the upper pull-in roller 66 relatively escapes upward with respect to the descending lifting operation unit 60, and the disc holding force by the pair of rollers 66 and 69 is released. (See Figure 9).

Also, as shown in FIG. 3, the lifting chassis of the lifting operation unit 60.
A clamp arm 81 is supported by 11. A pair of support pins 82 are fixed to the lifting chassis 11, and the support holes 81b formed in the clamp arm 81 are formed in the support pins 82.
Supported by. The support pin 82 and the support hole 81b are inserted in a considerably rough state, and the clamp arm 81 is supported with respect to the support pin 82 so as to be swingable and slightly vertically movable. A bent support piece 81a is formed at the rear end of the clamp arm 81.
When the raising / lowering operation unit 60 descends to the disk playing position in the unit Y, the supporting piece 81a at the rear end of the clamp arm 81 is inserted into the V groove 43a of the clamper supporting member 43 of the disk drive unit 40 shown in FIG. It is designed to fit in. A clamper 80 is rotatably supported at the tip of the clamp arm 81 via its central axis.

As shown in FIGS. 3 and 4, a pair of disk guides 15 are attached to both left and right sides of the lower surface of the lifting chassis 11 provided in the lifting operation unit 60.

FIG. 5A is a plan view showing the disc guide 15, FIG. 5B is a front view thereof, and FIG. 5C is a sectional view taken along line CC of FIG. 5A.

The disc guide 15 is made of a resin material. The upper surface is a mounting surface 15a for the lower surface of the lifting chassis 11, and a pair of positioning protrusions 15b is formed on the mounting surface 15a. The mounting hole 1 is located near the center.
5c is drilled. This mounting hole as shown in Fig. 5C
15c is a countersink. The bottom surface of the disc guide 15 has a step 15d
Is formed, and the guide surface A is formed through the step 15d. Further, as shown in FIG. 5B, inclined guide surfaces B are formed at the front and rear ends of the disc guide 15.
The inclined guide surface B is oriented in the pulling-in direction and the ejecting direction when the disc DS is pulled into the lifting / lowering operation unit 60. As shown in FIG. 4, this disc guide 15
Is attached to the lower surface of the elevating chassis 11 with the step 15d facing each other and the guide surface A facing downward. At this time, the pair of positioning protrusions 15b are fitted into the positioning holes formed in the lifting chassis 11. Further, a flat head screw 16 is inserted into the mounting hole 15c from below and the tip of the flat head screw 16 is screwed to the elevating chassis 11, whereby the disc guide 15 is fixed.

Also, as shown in FIG. 7, the pair of disc guides 15
Is installed between the pull-in roller 66 and the clamper 80. Then, while the disc DS is being drawn into the up-and-down motion section 60 by the pull-in roller 66, both ends of the disc DS move in a state of facing or in contact with the guide surface A of the disc guide 15. Further disc
When the DS moves to a position where it can be clamped by the clamper 80 (a position just above the turntable 41),
The disc guide 15 is located outside the outer periphery of the disc DS.

Further, the lifting operation unit 60 is provided with a mechanism such as a support table 71 that supports the disk pulled out from the inside of the cartridge C by the drawing rollers 66 and 69 from below. When the raising / lowering operation unit 60 descends to the playing position, the support table 71 and the lower pull-in roller 69 escape below the turntable 41 so that they do not interfere with the disc rotationally driven by the turntable 41. (See Figure 6B).

Next, the structure of the loaded disk cartridge will be described with reference to FIGS. 10 and 11.

This disk cartridge C has a plastic case 90
A plurality of (6 in the illustrated embodiment) disks DS are housed therein. FIG. 10 is a perspective view showing the same direction as the insertion direction shown in FIG. 1, and FIG. 11 shows a state in which the bottom cover 91 is removed with the figure upside down.

A plurality of partition plates 92 are inserted in the case 90. First
As shown in FIG. 11, spacers 92a are integrally provided at both ends of the partition plate 92. A plurality of partition plates 92 are stacked, and a slit S having a constant width is formed according to the vertical dimension of the spacer 92a. The slit S divides the interior into a plurality of layers, and the discs DS are housed in the slits S, respectively. In the case of the illustrated embodiment, the slit S is divided into six sections, and six discs DS can be stored.

In addition, a pair of left and right leaf springs 93 is housed in the case 90. The leaf spring 93 is formed in a substantially triangular shape, and is arranged so as to penetrate each partition plate 92. As shown in FIG. 12, the fulcrum of the leaf spring 93 in the disc urging direction changes according to the position of the disc DS to be stored. Therefore, in FIG. 12, when the disc DS is completely inserted, the leaf spring 93 urges the disc DS in the housing direction, and when the disc DS is ejected, the leaf spring 93 displaces the disc DS in the ejection direction. Function to urge to. Further, a disc ejector 94 is provided on the back side of the case 90. The ejector 94 is rotatably inserted into the shaft 95. In the illustrated embodiment, six ejectors 94 are provided so as to overlap each other, and each of them is located on the back side of each of the six slits S and faces the rear end of the disc DS housed in each slit S. (See Figure 12).

The case 90 has an inclined surface 96 at one corner (corner in the insertion direction). When the disc cartridge C is mounted in the cartridge mounting portion D, as shown in FIG. 12, the disc pressing piece 25b of the disc ejecting member 25 provided in the elevating operation unit 60 faces the inclined portion 96, The disc pressing piece 25b faces the rear end of the ejector 94.

Next, the operation of the disc changer-integrated disc player will be described.

A disc DS is accommodated in each slit S of the disc cartridge C, and the disc cartridge C accommodating the plurality of discs DS is mounted in the cartridge mounting portion D in the unit Y. When the cartridge C is mounted in the cartridge mounting portion D, the cartridge table
It is locked by a lock mechanism provided on the lower surface of 30. At this time, the loaded disk cartridge C is
The disc ejection port side faces the disc playing portion E.

When a desired disc in the disc cartridge C is played, a disc to be played is first searched. This search operation is performed by rotating the elevating screws 52 of each elevating mechanism 50 in synchronization with each other by a drive mechanism provided under the bottom plate 34 of the unit Y. By the rotating operation of each lifting screw 52, the third
The raising / lowering operation unit 60 shown in the figure operates up and down in the unit Y. In the drive mechanism provided on the lower side of the bottom plate 34, the operation amount is detected by the sensor,
By the detection operation of this sensor, it is possible to confirm which height position the lifting operation unit 60 has reached. That is, by confirming the height position of the raising / lowering operation unit 60, the raising / lowering operation unit 60 is moved to the slit S of the cartridge C.
It is possible to face the desired one of them. As shown in FIG. 8, when the search operation is completed, the lifting operation unit 60 stops at a predetermined height position, and at this time, the pair of pull-in rollers 66 and 69 provided in the lifting operation unit 60 causes the cartridge It faces the front of any slit S of C. In addition, as shown in FIG.
The disc pressing piece 25 of the disc ejecting member 25 provided on the disc 60 faces the ejector 94 in the disc cartridge C, which is located behind the slit S where the pull-in rollers 66 and 69 face each other.

In this state, the drive mechanism provided in the lifting operation unit 60
The motor in 10 starts. As a result, the gear shown in FIG.
A disc ejecting member by a drive pin 10b provided on 10a.
25 is reciprocated one time from the f direction to the e direction, and at the same time, the upper pulling roller 66 is driven in the disc pulling direction (counterclockwise direction). F of the disc ejecting member 25 at this time
During the process in the direction, the disc pressing piece 25b of the disc ejecting member 25 presses the ejector 94 shown in FIG. By the operation of the ejector 94, the disc DS is ejected from the cartridge C. At this time, since the upper pull-in roller 66 provided in the lifting / lowering operation unit 60 is rotating in the disc pull-in direction, the disc DS discharged from the cartridge C is nipped by the pull-in rollers 66 and 69, and the upper side pull-in roller 66 is held. The disc DS is drawn into the raising / lowering operation unit 60 by the rotational force of the drawing roller 66.

At this time, the clamp arm in the lifting operation unit 60
81 is separated from the clamper support member 43 provided in the disk drive unit 40. Therefore, as shown in FIG. 6A, the clamp arm 81 is supported only by the support pins 82 provided on the lifting chassis 11. At this time, the spring 12 provided on the lifting chassis 11
Presses the clamp arm 81 downward in the figure with respect to the clamper 80 outside the fulcrum of the support pin 82. Therefore, the clamp arm 81 is urged clockwise and the clamper 81
80 has been lifted. When the disc DS is pulled in by the pull-in roller 66 as described above, both sides of the disc DS are guided by the guide surfaces A of the disc guide 15 (see FIG. 7). Therefore 6A
As shown in the drawing, the leading end of the disc DS in the pull-in direction is regulated so as not to be lifted by the guide surface A, and the leading end of the disc DS is prevented from hitting the clamper 80 and other members. The position where the disc DS is clamped (7th
When it advances to the position of the disc shown on the right side in the figure), the edge of the disc DS is just disengaged from the disc guide 15.

After the disk DS is drawn into the lifting / lowering operation unit 60, the lifting / lowering mechanism 50 is started, and the lifting / lowering operation unit 60 is moved to the lowest position shown in FIG. The disk DS held in the lifting / lowering operation unit 60 is installed on the turntable 41 of the disk drive unit 40. At this time, as shown in FIG. 6B, the support piece 81a provided at the rear end of the clamp arm 81 is
Is locked in the V groove 43a of the clamper support member 43 provided on the disk drive unit 40. When the ascending / descending operation unit 60 further descends from this state, the support pin 82 floats from the clamp arm 81, and the clamp arm 81 is supported only by the V groove 43a of the clamper support member 43. At this time, the spring 12 presses the clamp arm 81 downward on the clamper side with respect to the support fulcrum of the clamper support member 82. Therefore, this force causes the clamp arm
81 rotates counterclockwise, and the clamper 80 presses the disc DS against the turntable 41. The clamper 80 presses the disc DS against the turntable 41 by the spring pressure and the attracting force of its own magnet.

In this clamped state, the upper pulling roller 66 is lifted by the roller restricting piece 70 (see FIGS. 1 and 9). Further, the lower pull-in roller 69 and the disc support table 71 are escaped below the disc DS.
Further, the disc guide 15 is located outside the outer periphery of the disc DS. Therefore, the disc DS is driven by the turntable 41 without being restrained, and the optical pickup
The reproducing operation is performed by 42.

Next, the operation of returning the finished disc DS to the cartridge C will be described.

When the playback operation by the disk drive unit 40 is completed,
The lifting / lowering operation unit 60 moves up, and the lower pull-in roller 69 and the support table 71 lift the disk DS.
On the way, the upper pulling roller 66 separates from the roller restricting piece 70, and the disc DS is nipped by both rollers 66 and 69. The raising / lowering operation unit 60 has a predetermined slit S of the cartridge C.
When the disc is raised to the position of (the slit from which this disc is pulled out) and stopped, the motor of the drive mechanism 10 in the lifting / lowering operation unit 60 is started, the pull-in roller 66 is driven, and the disc DS
Are returned to the cartridge.

In the illustrated embodiment, the disc guide 15 is formed of resin or the like and is fixed to the lower surface of the lifting chassis 11, but for example, the lifting chassis is bent and the resin is fixed to the lower end thereof. A disc guide may be formed.

Furthermore, the present invention is not limited to the disc player with the disc changer integrated, and can be practiced with a disc player having a structure in which the discs are drawn one by one.

〔effect〕

As described above, according to the present invention, the disc guide can prevent the disc from being lifted and hitting the clamper by guiding the disc in the process of being pulled in. Since it is disengaged from the disc guide, a mechanism for escaping the disc guide at the time of reproducing the disc becomes unnecessary.

In addition, the disk guide requires a smaller installation space than the conventional guide roller shown in FIG. 13, and the device configuration is economical.

[Brief description of drawings]

1 to 12 show an embodiment of the present invention. FIG. 1 is a perspective view showing the entire structure of a disc player with a disc changer, and FIG. 2 shows a cartridge mounting portion and a disc playing portion. FIG. 3 is a perspective view showing a lifting operation unit, FIG. 4 is a partial perspective view showing a mounting state of the disk guide in the lifting operation unit, FIG. 5A is a plan view of the disk guide, and FIG. Fig. 5C is C- of Fig. 5A.
C sectional view, FIGS. 6A and 6B are sectional views showing the guide operation by the disc guide and the operation of the disc clamp device, FIG. 7 is a plan view showing the guide operation by the disc guide, and FIGS. 8 and 9 are FIG. 10 is an enlarged front view of the apparatus showing a state in which the cartridge is mounted, FIG. 10 is a perspective view showing the disc cartridge, FIG. 11 is an exploded perspective view showing the disc cartridge upside down, and FIG. 12 is ejecting the disc from the cartridge. FIG. 13 is a plan view showing the operation, and FIG. 13 is a side view showing the outline of the structure of a disc changer-integrated disc player for explaining the problems of the conventional technique. 10 …… Drive mechanism, 11 …… Lift chassis, 12 …… Spring, 15 …… Disc guide, 25 …… Disc ejection member,
25b: Disc pressing piece, 25c: Eject drive protrusion,
C: disc cartridge, D: cartridge mounting part, E: disc playing part, DS: disc, 40 ... disc drive unit, 41 ... turntable, 42 ... optical pickup, 43 ... clamper support member , 50 ...... Lifting mechanism, 60 ...... Lifting operation part, 66, 69 ...... Disc pulling roller, 80 ...... Clamper, 81 ...... Clamp arm.

Claims (1)

[Claims] 1. A disc player provided with a pull-in member for pulling in a disc and a disc clamp mechanism positioned in the pull-in direction by the pull-in member, wherein the pull-in member can be clamped by the disc clamp mechanism from a position where the pull-in member starts pulling in the disc. The disc guide is placed in the disc pull-in path during pulling up to a certain position, guides the disc in the middle of being pulled in by the pull-in member, and is placed at a position where it is removed from the disc when it reaches a position where it can be clamped by the clamp mechanism. A disk loading device, which is provided.