JPH11162079A - Drive device of information recording disk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize the driving operation of an information recording disk by supprssing the vibration of a drive arm in a drive device of information recording disk in which the drive arm is rocked. SOLUTION: The device is provided with a tray for supporting the information recording disk. An arm shaft 182 is provided at the side of the tray, then a rocking arm 181 rocking by taking the arm shaft 182 as a fulcrum is moved back and forth against the tray. A drive arm 221 is arranged on the rocking arm 181. The drive arm 221 is provided with a turntable 223 for chucking the information recording disk, a driving part 224 for rotating the turntable 223, and a head part 227 for reproducing the information recording disk. Vibration proof supporting means 236a-236c are provided for supporting the drive arm 221 in a vibration proof state against the rocking arm 181.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording disk drive device in which a drive arm is swung to advance and retreat with respect to a drive position of an information recording disk.

[0002]

2. Description of the Related Art Conventionally, for example, there is a compact disc (hereinafter referred to as a CD) as an information recording disc, and a plurality of CD drives are used as a CD drive for reproducing the CD.
CD that selectively reproduces CD from D
There is a changer.

[0003] In this CD changer, for example, as described in Japanese Patent No. 2620146, trays for mounting CDs are vertically arranged in a plurality of stages in a changer body, and sideways of these trays are arranged. A drive arm is provided which is capable of moving forward and backward with respect to the tray with an arm shaft provided upright at the fulcrum. Drive arm is CD
A drive unit for rotating the turntable, and a head unit for reproducing a CD.

In order to select a tray (CD) for reproduction, the tray is moved to form a drive space in which a drive arm can enter below the selected tray, and the drive arm is mounted on the drive. After moving up and down to a height that allows entry into the drive space, the drive arm is entered into the drive space to play a CD in the selected tray.

[0005]

However, in the conventional CD changer, the drive arm is directly supported by the arm shaft for the purpose of moving the drive arm back and forth with respect to the tray, and external vibration is transmitted through the arm shaft. And transmitted directly to the drive arm, and the reproduction of the CD becomes unstable.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and in an information recording disk drive device in which a drive arm is swung to advance and retreat with respect to a drive position of an information recording disk, the drive arm of the drive arm is driven. An object of the present invention is to suppress vibration and stabilize the drive of an information recording disk.

[0007]

According to a first aspect of the present invention, there is provided an information recording disk drive device comprising: a tray for supporting an information recording disk; A swing arm which is moved forward and backward, a turntable which is arranged on the swing arm and chucks the information recording disk, a drive unit which rotates the turntable, and performs at least one of reproduction and recording of the information recording disk A drive arm having a head portion, and anti-vibration support means for supporting the drive arm in an anti-vibration state with respect to the swing arm.

In an information recording disk drive device in which a drive arm is swung to move forward and backward with respect to a drive position of an information recording disk, a swing arm is swung about an arm axis and moved forward and backward with respect to a tray. By supporting the drive arm in an anti-vibration state via the anti-vibration support means, the vibration of the drive arm during driving is suppressed, and the drive of the information recording disk is stabilized.

According to a second aspect of the present invention, there is provided an information recording disk drive device according to the first aspect, further comprising a support arm disposed at a fixed position and having a drive arm swingably connected thereto. The vibration support means
In a state where the drive arm is swung to the drive position, the drive arm is disposed at three points: a tip side of the drive arm, a connection side between the drive arm and the support arm, and a tip side of the support arm, respectively corresponding to the apex positions of the triangles. It is.

In a state where the drive arm is swung to the drive position, three points are vibrated at the distal end of the drive arm, the coupling side between the drive arm and the support arm, and the distal end of the support arm corresponding to the apexes of substantially triangles. The support by the support means stabilizes the attitude of the drive arm during driving, stabilizes the support state of the information recording disk, and further stabilizes the drive of the information recording disk.

According to a third aspect of the present invention, in the information recording disk drive of the second aspect, at least one of the anti-vibration support means is provided on a drive arm.

The provision of the anti-vibration support means on the drive arm further stabilizes the support state of the information recording disk at the time of driving, and more reliably stabilizes the drive of the information recording disk.

According to a fourth aspect of the present invention, there is provided the information recording disk drive according to any one of the first to third aspects, wherein the information recording disk is chucked by the turntable and the drive arm is supported by the vibration-proof support means. In addition to the restricting means, which is in an allowable state in which the support is permitted, and which is in a restricting state in which the drive arm is supported by the anti-vibration support means in a state other than the time of chucking and the drive arm is held at a fixed position. is there.

In a state other than when the information recording disk is being chucked by the turntable, the restricting means restricts the support of the drive arm in the vibration-proof state by the vibration-proof supporting means and holds the drive arm in a fixed position. This ensures that the drive arm can be moved forward and backward with respect to the tray, and the information recording disk can be chucked by the turntable.

According to a fifth aspect of the present invention, in the information recording disk drive of the fourth aspect, the turntable is interlocked with the restricting means, and the information recording disk can be disengaged in a restricted state of the restricting means. And a chuck mechanism for chucking the information recording disk in an allowable state of the regulating means.

The turntable is provided with a chuck mechanism for chucking the information recording disk in an allowable state of the restricting means while enabling the information recording disk to be disengaged in the restricting state of the restricting means. The recording disk can be chucked and dechucked, eliminating the need for a separate mechanism for holding the information recording disk with the turntable.

According to a sixth aspect of the present invention, there is provided an information recording disk drive device according to any one of the first to fifth aspects, wherein a plurality of trays are arranged in parallel and movably arranged in the parallel direction. A selection mechanism for selecting any one of the plurality of trays for driving an information recording disk and moving a drive arm to a selected position corresponding to the selected tray; and moving the tray. And a moving mechanism for forming a drive space adjacent to the tray selected by the selection mechanism in the parallel direction and in which a drive arm can enter.

A plurality of trays are arranged, one of the plurality of trays is selected by a selection mechanism, and a drive arm is moved to a corresponding selected position. Even in a configuration in which a drive space is formed adjacent to which a drive arm can enter, the drive of the information recording disk is stabilized.

An information recording disk drive according to a seventh aspect of the present invention is the information recording disk drive according to any one of the first to sixth aspects, further comprising a drive device main body,
A plurality of trays are incorporated in the drive device body.

By incorporating a plurality of trays into the drive device body, an information recording disk drive device that selectively drives a plurality of information recording disks can be downsized.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In this embodiment, a CD player is used as an information recording disk drive for handling a compact disk (hereinafter referred to as a CD) dedicated to reproduction as an information recording disk, and one CD is selectively selected from a plurality of CDs. A CD changer for reproducing a CD will be described.

In FIG. 7, the CD changer has a body 1 as a drive device main body, and the body 1 is configured to be incorporated in an audio equipment. Aircraft 1
A bottom plate 2 having a substantially square shape is provided. Side plates 3 and 4 are erected from both sides of the bottom plate 2, and an upper plate 5 is connected to the side plates 3 and 4 on both sides, and a CD mounting / removing opening 6 is formed on the front surface. ing.

As shown in FIG. 8, the upper part of the drawing
, The lower part is the rear part of the fuselage 1),
The front part in the fuselage 1 has a plurality of vertical stages (see FIGS. 7 and 1).
3), a selection plate 12 is provided at the rear of the body 1 so as to be vertically movable, and a selection plate 12 is provided on one side plate 3 and the selection plate 12 of the body 1. A loading mechanism 13 for moving one tray 11 forward and backward through the attachment / detachment port 6 is provided. An information recording disc selection for selecting a tray 11 for playing a CD or a tray 11 for loading is provided at the bottom and both sides of the body 1. Device 14
Are provided, and a tray 11 to be selected is
A drive arm 15 for reproducing the CD is provided.

Next, the structure of the tray 11 will be described.

As shown in FIG. 11 and FIG.
Reference numeral 11 denotes a tray plate 21 on which a CD is mounted and the tray plate 21
Has a holder plate 22 which slidably holds in the front-rear direction. The tray plate 21 and the holder plate 22 are formed in substantially the same shape in plan view, and formed with cutouts 23 and 24 that allow the drive arm body 15 that has moved to the drive position from the center to the rear to move vertically. Have been.

A concave engaging step 25 is formed at a rear portion of one side of the tray plate 21 corresponding to the loading mechanism 13, and an engaging groove 26 opening laterally is formed at a front side of the engaging step 25. A locking hole 27 penetrating in the vertical direction is formed on the side of the engagement step 25.
Are formed.

Guide rollers 28 as a pair of front and rear operation receiving portions are rotatably supported on both sides of the holder plate 22. Each guide roller 28 is formed on the side plates 3 and 4 of the machine body 1 along the vertical direction. The guide groove 29 is vertically movably engaged in the guide groove 29 (see FIG. 7 and the like).

A stopper 30 for regulating the rearward movement of the tray plate 21 is formed at a rear portion on one side of the holder plate 22 corresponding to the loading mechanism 13. On the lower surface of the holder plate 22 in the vicinity of the stopper 30, a leaf spring 31 whose rear end is a free end having elasticity upward is fixed, and the rear end of the leaf spring 31 is protruded above the holder plate 22. Lock hole of tray plate 21
A locking piece 32 that can advance and retreat is provided upright at 27, and a substantially triangular release part 33 protruding above the holder plate 22 and positioned behind the engaging step of the tray plate 21 is formed. ing.

As shown in FIG. 14, below the holder plate 22, the front end side is rotatably supported by the holder plate 22 and the rear end side is lowered by a spring (not shown) to lower the tray 11 on the lower side. A holding plate 34 for holding the upper CD is provided. The holding plate 34 also has cutouts in the tray plate 21 and the holder plate 22.
Notches (not shown) similar to 23 and 24 are formed.

Next, the structure of the selection plate 12 will be described.

As shown in FIGS. 1 to 3 and 8, the selection plate 12 has a substrate 41, and side plate portions 42, 43 are formed on both sides of the substrate 41 so as to rise. A rear plate portion 44 is formed on the side, and the side plate portions 4 on both sides are formed.
2 and 43 are slidably supported in the vertical direction with respect to the side plates 3 and 4 on both sides of the fuselage 1.
Is moved up and down to the selected position selected by the user.

Next, the structure of the loading mechanism 13 will be described.

As shown in FIGS. 11 and 12, the loading mechanism 13 has a cam plate 51 fixed to a side plate portion 42 on one side of the selection plate 12, and a cam groove 52 is formed in the cam plate 51. Have been. A loading plate 53 is mounted on the cam plate 51 so as to be slidable in the front-rear direction. A release portion 33 of the holder plate 22 of the tray 11 is provided at a front end of the loading plate 53.
Are formed, and a pushing piece 54 is formed to push the engaging step 25 of the tray plate 21 forward, and a connecting piece 55 is formed to project from a side of the loading plate 53.

A loading lever 56 is swingably supported on the loading plate 53 with a lever shaft 57 as a fulcrum, and the front end of the loading lever 56 has a tray plate
An engaging roller 58 capable of engaging with the engaging groove 26 of the 21 is rotatably supported by the shaft, and penetrates the loading plate 53 at the rear end of the loading lever 56 to engage with the cam groove 52 of the cam plate 51. A cam shaft 59 is attached. A spring 60 for urging the loading lever 56 in a counterclockwise direction in the drawing, that is, a direction in which the engagement roller 58 is engaged in the engagement groove 26 of the tray 11, is tensioned between the loading lever 56 and the loading plate 53. Has been established.

The loading mechanism 13 has a support plate 61 disposed along the side plate 3 on one side of the body 1, and a slide member 62 is slidable on the lower surface of the support plate 61 in the front-rear direction. A connecting shaft 63 to which the connecting piece 55 of the loading plate 53 is movably connected in the vertical direction (axial direction) is attached to the rear end of the slide member 62.

A rack 64 is mounted on the inner side of the support plate 61 so as to be slidable in the front-rear direction. Between the rack 64 and the slide member 62, the slide member 62 follows the forward movement of the rack 64. The spring 65 is stretched.

A loading motor is provided on the side of the support plate 61.
A forward / reverse rotational driving force of the loading motor 66 is transmitted to the rack 64 via a gear train 67 including a plurality of gears.

An eject detection switch 68, which is pushed by the rack 64 moving forward and detects an eject position, is disposed in front of the moving area of the rack 64, and moves backward behind the moving area of the rack 64. A loading detection switch 69 that is pressed by the rack 64 to detect the completion of loading is provided. Further, a tray push detection switch 70 that is turned on by the slide member 62 when the rack 64 moves to the eject position is provided in front of the movement area of the slide member 52.

Next, the structure of the information recording disk selecting device 14 will be described.

As shown in FIGS. 9, 10, 13 to 15, the information recording disk selecting device 14 uses a selecting mechanism 81 to select one of the trays 11 for reproducing (or loading) from among a plurality of trays 11. The drive mechanism 15 is configured such that the drive arm 15 can enter below the selected tray 11 by the movement mechanism 82. Furthermore, the holding mechanism 83 is configured to hold the selection mechanism 81 at the selected position of the selection mechanism 81 when the moving mechanism 82 operates.

The information recording disk selecting device 14 includes a moving plate 84 slidably disposed on the bottom plate 2 of the machine body 1 in the front-rear direction, a pair of operating bodies 85 disposed on both sides of the moving plate 84, An interlocking plate 86 provided on the moving plate 84, and a pair of front and rear interlocking levers 87 for interlocking the operating bodies 85 with the interlocking plate 86 are provided.

On both sides of the moving plate 84, the lowermost tray
A pair of front and rear guide pieces 91 for vertically moving the tray 11 via the 11 guide rollers 28 are provided upright, and behind each guide piece 91, each operating body 85 is supported so as to be vertically movable. The support pieces 92 are provided upright, and a bearing piece 93 for rotatably supporting the interlocking lever 87 is provided upright behind each support piece 92.

Each guide piece 91 has a guide roller at a standby position where the moving plate 84 shown in FIG.
An upper horizontal edge 94 is formed to raise the tray 11 via the guide plate 28, and guides the tray 11 downward via the guide roller 28 when the moving plate 84 shown in FIG. 14 moves forward from the standby position (moving plate 84). The guide plate 28 guides the tray 11 upward when the cover 84 moves rearward from the advanced position.) The inclined edge 95 is formed, and the moving plate shown in FIG.
A lower horizontal edge 96 that supports the tray 11 via the guide roller 28 is formed at the reproduction position (drive position) where 84 is the most advanced.

Each support piece 92 has a groove along the vertical direction.
97 are formed.

Each operating body 85 is disposed inside each supporting piece 92 of the moving plate 84, and a pair of upper and lower shafts 101 is engaged with the groove 97 of the supporting piece 92 so as to be movable in the vertical direction. It is supported by.

The guide roller of one tray 11 selected by the forward movement from the standby position where the movable plate 84 shown in FIG.
A guide groove 102 capable of engaging only 28 is formed. The guide groove 102 is formed with a first groove 103 for lowering the selected tray 11 via the guide roller 28 at a position where the moving plate 84 shown in FIG. 14 has moved forward, and as shown in FIG. The tray selected via the guide roller 28 at the reproduction position where the moving plate 84 is most advanced.
A second groove 104 for further lowering 11 is formed.

On the front edge of the operating body 85, there is formed a guide edge portion which forms a groove portion 105 in parallel with the inclined edge portion 95 of the guide piece portion 91.
106 are formed.

At the rear of the rear working body 85, a selection plate is provided.
A connection pin 107 connected to 12 protrudes.

Further, on both sides of the interlocking plate 86, the support shafts 11 are provided.
A pair of front and rear bearing pieces 112, each of which protrudes, is provided upright.

Each of the interlocking levers 87 is formed substantially in an L-shape, and an intermediate portion thereof is attached to the bearing piece 93 of the moving plate 84 by the support shaft 11.
5, a long groove 116 connected to the lower shaft 101 of the operating body 85 is formed at one end, and a long groove 117 connected to the support shaft 111 of the interlocking plate 86 is formed at the other end. ing.

Then, the selection plate 12 and the rear operating body 85
Are vertically moved integrally via the connecting pin 107, and the front and rear operating bodies 85 are integrally moved vertically via the interlocking plate 86 and the interlocking lever 87. That is, the selection mechanism 81 moves the selection plate 12 and the front and rear operating bodies 85 integrally in the vertical direction, and moves the selected plate 11 to the selected position for playing the CD.

Further, the moving mechanism 82 allows the moving plate
84 and the front and rear operating body 85 are integrally moved in the front and rear direction, and the tray 11 is selected by moving the tray 11 when moving forward.
A drive space is formed below 11.

Next, the structure of the selection mechanism 81 will be described.

As shown in FIGS. 9 and 10, the selection mechanism
81 has a selection plate 121 slidably attached to the rear of the bottom plate 2 of the body 1 in the left-right direction. The selection plate 121 is arranged at the rear edge thereof on the rear side of the rear plate 44 of the selection plate 12. An upright piece 122 is formed, and a cam groove 124 is formed in the upright piece 122 so that a pin 123 projecting from the rear plate 44 of the selection plate 12 is engaged with the cam groove 124 at an angle.

A guide groove 125 which is long in the front-rear direction is formed at the front of the selection plate 121.
6 is engaged with the holding pin 127 at one end. Holding lever
126 is formed in a substantially L-shape, and the middle portion is the movable plate 8
4 is rotatably supported by a support shaft 128, and a long groove 129 formed at the other end has a pin 13 erected on an interlocking plate 86.
Connected to 0.

When the selection plate 121 slides leftward in the drawing, the selection plate 12 is moved through the cam groove 124.
Is raised, the holding lever 126 is rotated clockwise in the drawing, the interlocking plate 86 is advanced, and the respective operating bodies 85 are raised via the respective interlocking levers 87, that is, the selection plate 12 and the operating body 85 Is raised integrally. on the other hand,
When the selection plate 121 slides rightward in the drawing, the selection plate 12 is lowered via the cam groove 124, the holding lever 126 is rotated counterclockwise in the drawing, and the interlocking plate 86 is retracted. Each operating body 85 is lowered via each interlocking lever 87, that is, the selection plate 12 and the operating body 85 are integrally lowered.

At the rear of the selection plate 121, there is provided a passive piece 132 having an engaging groove 131 formed along the vertical direction. The passive piece 132 is provided on the side of the body 1 for driving. means
Linked to 133.

The driving means 133 is provided on a support frame 134 attached to the body 1 and has a drive lever 136 rotatably supported by a support shaft 135 on the support frame 134. Pin 137 is engaged with the engagement groove 131 of the passive piece 132
Is engaged. A gear is attached to the support shaft 135 of the drive lever 136.
A selection motor 139 is attached to the support frame 134. The forward / reverse rotation driving force of the selection motor 139 is transmitted through a gear train 140 composed of a plurality of gears.
138. Then, the drive lever 136 is swung by the driving of the selection motor 139, and the selection plate 121 is moved in the left-right direction.

It should be noted that a selection position detecting means (not shown) for detecting the rotation amount of the gear 138 is provided, and the moving position of the selection plate 121, that is, the selection position is detected by the selection position detecting means.

Next, the structure of the moving mechanism 82 will be described.

As shown in FIGS. 9 and 10, the moving mechanism
Reference numeral 82 denotes a cam disk 152 rotatably supported on a support shaft 151 as a fulcrum on the bottom plate 2 of the body 1.
Has a cam groove 153, and a gear 154 is attached to a part of the periphery.

A support shaft 155 is provided on the bottom plate 2 on the front side of the cam disk 152.
One end of the cam lever 156 is rotatably supported on a pivot point, and the other end of the cam lever 156 is
157, and the middle part is the cam groove 1 of the cam disk 152.
It is connected to a cam disk 152 via a cam pin 158 engaged with 53.

When the cam disk 152 is at the standby position shown in FIG. 9, the movable plate 84 is at the standby position (the position shown in FIG. 13) in which the moving plate 84 has moved backward.
The rotation of the moving plate 152 through the cam groove 153 and the cam lever 156 causes the moving plate 152 to rotate clockwise in FIG.
84 is moved forward to the reproduction position (the position in FIG. 15) shown in FIG. On the other hand, when the cam disk 152 is rotated in the counterclockwise direction in FIG. 10 from the reproduction position shown in FIG. 10, the moving plate 84 is moved rearward through the cam groove 153 and the cam lever 156, and as shown in FIG. It returns to the indicated standby position.

The cam disk 152 is rotated by driving means 159 provided on the side of the body 1. The driving means 159 is provided with a moving motor 160 attached to the airframe 1.
Zero forward / reverse rotational driving force is transmitted to the gears via a gear train 161 composed of a plurality of gears.

It should be noted that moving position detecting means (not shown) for detecting the amount of rotation of one of the gears in the gear train 161 is provided. Is detected.

The moving mechanism 82 has a function of a tray moving mechanism for moving the tray 11 described above, and also has a function of a drive arm moving mechanism for moving a drive arm body 15 described later.

Next, the structure of the holding means 83 will be described.

As shown in FIG. 9 and FIG.
83 has a holding pin 127 and a comb-like holding groove 171 with which the holding pin 127 is engaged.

The holding groove 171 is provided in the guide groove 125 of the selection plate 121.
Is formed on the bottom plate 2 corresponding to the sliding area of the selection plate 121 below the selection plate 121. In the standby position shown in FIG.
A selection groove portion 172 is formed to allow the holding pin 127 to move to each of the selected positions in accordance with the slide to each of the selected positions of item 1, and the selection groove portion 172 communicates forward from a position corresponding to each of the selected positions. Thus, a plurality of holding grooves 173 are formed for each selected position to allow the holding pin 127 to advance and retreat, and to hold the advancing state. The width of the inlet communicating with the selection groove 172 of each holding groove 173 is formed wide to facilitate the entry of the holding pin 127, and the width on the back side is narrow to hold the holding pin 127. Is formed.

In the standby position shown in FIG. 9, the holding pin 127 is moved in the selecting groove 172 and faces the corresponding holding groove 173 with the movement of the selecting plate 121 to any one of the selecting positions. It is located at the selected position. By moving the moving plate 84 forward from this state toward the reproduction position in FIG. 10, the holding pin 127 moves forward along the guide groove 125 and enters the holding groove 173, and the selection plate 121 is moved. Is held at the selected position.

Next, the structure of the drive arm body 15 will be described.

As shown in FIGS. 1, 8, and 17, the drive arm body 15 is disposed on the selection plate 12.
It has a swing arm 181 that moves forward and backward with respect to the tray 11. The swing arm 181 is erected on the bottom plate 2 at the side position of the tray 11 and is swingably supported on an arm shaft 182 penetrated on the selection plate 12 as a fulcrum. A cam groove 183 is formed on the near base end side.

A switching plate 184 is mounted on the selection plate 12 so as to be slidable in the front-rear direction, and a cam pin 185 engaging with the cam groove 183 is provided on the switching plate 184.

Then, at the standby position where the switching plate 184 shown in FIG. 16 is retracted, the swing arm 181 is located at the standby position where it is retracted rearward from the inside of the tray 11 via the cam groove 183 and the cam pin 185. When the switching plate 184 is moved forward from this standby position, the cam groove 183 is moved.
The swing arm 181 enters the front tray 11 and swings via the cam pin 185 and is positioned at the reproduction position (drive position) shown in FIG.

The translation of the switching plate 184 in the front-rear direction is performed by the function of the drive arm moving mechanism of the moving mechanism 82. In the function of the drive arm moving mechanism, the intermediate portion has first and second links 192 and 193 rotatably connected to each other by a connecting pin 191. The front ends of the first and second links 192 and 193 are provided. Is pin 194,19
5 to the switching plate 184 via the first link
The rear end of 192 is supported on the selection plate 12 by a support shaft 196,
The rear end of the second link 193 is connected to a working plate via a cam pin 197.
198.

One end of the third link 199 is rotatably supported on the selection plate 12 with the support shaft 200 as a fulcrum, and the other end of the third link 199 is connected to the first link via a pin 201.
192, and the middle part is actuated
It is linked to 98. The third link 199 has a cam groove 203
The cam groove 203 is formed in the cam groove 203.
04 is engaged.

The operation plate 198 is attached to the selection plate 12 so as to be slidable in the left-right direction, and has a cam groove 205 in which the cam pin 197 of the second link 193 and the cam pin 202 of the third link 199 are engaged. I have.

Then, at the standby position where the operation plate 198 shown in FIG.
4 is in the retracted standby position. When the operation plate 198 is slid rightward in the drawing from the standby position,
The switching plate 184 is translated forward via the first to third links 192, 193, 199.

Further, in the function of the drive arm moving mechanism of the moving mechanism 82, as shown in FIGS. 9 and 10, the intermediate portion is rotated on the bottom plate 2 on the side of the cam disk 152 with the support shaft 211 as a fulcrum. The cam lever 212 is freely rotatably supported. One end of the cam lever 212 is connected to the cam disk 152 via a cam pin 213 engaged with the cam groove 153 of the cam disk 152, and the other end is connected to the pin 214. It is connected to the slide plate 215 through the intermediary. The slide plate 215 is attached to the rear of the bottom plate 2 so as to be slidable in the left-right direction.
A rising piece 216 is formed on the rear side of the rear plate section 44, and a guide groove 217 is formed in the rising piece 216 along the vertical direction.

As shown in FIGS. 16 and 17, a pin 218 projecting from an operation plate 198 is engaged with the guide groove 217 of the slide plate 215. Pin 218 is the selection plate
Guide grooves 21 formed in the rear plate portion 12 of the 12 along the left-right direction
9 is arranged through.

When the cam disk 152 is at the standby position shown in FIG. 9, the slide plate 215 is at the standby position in which it slides to the left in FIG.
Is rotated in the clockwise direction in FIG.
Through the 153 and the cam lever 212, the slide plate 215 is slid rightward in FIG. 9 to the reproduction position shown in FIG.

As shown in FIGS. 1, 4 and 8, a drive arm 221 is provided on the swing arm 181. A holding frame 222 is attached to the tip of the drive arm 221, a turntable 223 for chucking a CD is arranged above the holding frame 222, and a CD rotation motor 224 as a driving unit is attached below the holding frame 222. A turntable 223 is fixed to a drive shaft 225 of a CD rotation motor 224 protruding above the holding frame 222.

As shown in FIG. 8, a head unit 227 having a pickup 226 for reading and reproducing a CD is provided on the drive arm 221. Head 227
Is slidably supported along the drive arm 221 and is screwed to a feed screw 228 disposed along the drive arm 221. The head 227 is moved along the drive arm 221 by the rotation of the feed screw 228 by the head feed motor 229.

As shown in FIG. 1, a support arm 230 is provided on the selection plate 12 along the rear plate portion 44, and a connecting pin 231 projecting from the drive arm 221 at one end of the support arm 230 swings. A connection groove 232 that is movably connected is formed. Therefore, the drive arm 221 and the support arm 230 are connected so as to move integrally in a vertical direction or the like.

At both ends of the support arm 230, support receiving portions 233,
234 are formed, and the holding frame on the tip side of the drive arm 221 is formed.
The 222 has a support receiving portion 235 formed therein. Support arm 23
The anti-vibration support means 236a and 236b are disposed between the support receiving parts 233 and 234 of No. 0 and the selection plate 12, and the anti-vibration support means 236c is disposed between the support receiving part 235 and the swing arm 181. Have been. That is, when the drive arm 221 is swung to the drive position, three points on the distal end side of the drive arm 221, the connection side between the drive arm 221 and the support arm 230, and the distal end side of the support arm 230 respectively correspond to the substantially triangular apex positions.
At this point, anti-vibration support means 236a, 236b, 236c are provided, respectively, and the drive arm 221 and the support arm 230 are supported in an anti-vibration state with respect to the selection plate 12 and the swing arm 181.

As shown in FIGS. 2 to 4, each of the vibration isolating support means 236a, 236b, and 236c is configured substantially in common, and is mounted on the selection plate 12 or the swing arm 181.
In this case 237, a damper 238 such as an oil damper in which oil is sealed is accommodated in an elastic container such as rubber, and a connection shaft 23 is provided on the upper surface of the damper 238.
9 is projected, and the upper end of the connecting shaft 239 is
234 and 235. A coil-shaped spring 240 for floating the support receiving portions 233, 234, 235 is provided on the outer periphery of the case 237. In addition, each anti-vibration support means 236
The elasticity of the dampers 238 and springs 240 of a, 236b, 236c is appropriately set according to the load received at each location.

Next, the structure of the regulating means 251 will be described.

The regulating means 251 is provided with each of the anti-vibration supporting means 236a and 236a while the CD is chucked by the turntable 223.
Drive arm 221 and support arm by 236b, 236c
The drive arm 221 and the support arm 230 are restricted by supporting the drive arm 221 and the support arm 230 by the anti-vibration support means 236a, 236b, and 236c in a state other than the chucking state. It has a function to set a regulated state to hold it at a fixed position.

As shown in FIG. 1 and FIG.
Reference numeral 1 denotes a regulating lever 254 and a passive lever 255 rotatably supported by supporting shafts 252 and 253 on the side plate portion 42 of the selection plate 12 corresponding to the vibration-proof supporting means 236a. The connection lever 256 and the passive lever 255 are rotatably connected to each other by a connection pin 256. At the rear end of the regulating lever 254, an engaging portion 257 capable of engaging on the support receiving portion 233 of the support arm 230 is formed.
A passive roller 258 is rotatably supported on 5.

A spring 259 is mounted on the regulating lever 254, and the spring 259 causes the regulating lever 254 to move clockwise in FIG.
Is pressed in the direction of pressing downward. spring
The elastic force of 259 is set stronger than the elastic force of the spring 240 so that the support receiving portion 233 of the support arm 230 can be pressed downward against the bias of the spring 240.

As shown in FIG. 1 and FIG.
Numeral 1 has a regulating lever 262 and a passive lever 263 rotatably supported by supporting shafts 260 and 261 on the side plate portion 43 of the selection plate 12 corresponding to the vibration-proof supporting means 236b, respectively. The connection lever 262 and the passive lever 263 are rotatably connected to each other by a connection pin 264. At the rear end of the regulating lever 262, an engaging portion 265 that can be engaged on the support receiving portion 234 of the support arm 230 is formed.
A passive roller 266 is rotatably supported on 3.

A spring 267 is mounted on the regulating lever 262, and the spring 267 causes the regulating lever 262 to move in the counterclockwise direction in FIG.
4 is urged downward. The elastic force of the spring 267 is set to be stronger than the elastic force of the spring 240 so that the support receiving portion 234 of the support arm 230 can be pressed downward against the bias of the spring 240.

As shown in FIGS. 1 to 3, cam projections 268, 269 which can be engaged with the passive rollers 258, 266 are formed on both side edges of the switching plate 184.

Then, as described above, the switching plate 18
The cam projections 268 and 269 are disposed at positions separated from the rear of the passive rollers 258 and 266 at the standby position in which the support arm 230 is retracted, and the support arms 230 are supported by the springs 259 and 267 via the regulating levers 254 and 262. The receiving portions 233 and 234 are pressed downward, and the support of both ends of the support arm 230 by the respective vibration isolating support means 236a and 236b is regulated, and the support arm 230 is held at a fixed position. On the other hand, when the switching plate 184 is advanced to the reproduction position, the passive rollers 258 are placed on the cam projections 268, 269.
266, and the passive levers 255, 263 and the restriction levers 254, 262 are rotated to the two-dot chain line positions against the biasing of the springs 259, 267, respectively.
The second engaging portions 257 and 265 are lifted to release the pressing of the support arm 230 below the support receiving portions 233 and 234, and the support of both ends of the support arm 230 by the respective vibration isolating support means 236a and 236b is allowed. .

Further, as shown in FIGS. 1 and 4, the regulating means 251 corresponds to the anti-vibration support means 236c.
The support piece 270 raised from the edge of 181 supports the shaft 271
A regulating lever 272 rotatably supported by the
At the edge of the drive arm 221, a regulating shaft 273 is formed so as to be engageable with the regulating lever 272.

The swing arm 18 is provided below the drive arm 221.
A passive plate 274 is slidably mounted on the swinging arm 181 along the longitudinal direction of the swinging arm 181, and a passive piece 275 disposed inside the support piece 270 is formed on the passive plate 274 so as to rise. A cam pin 276 projecting from a regulating lever 272 is connected to the passive piece 275. The support piece 270 is formed with an arc-shaped long hole 277 through which a cam pin 276 penetrates and is movable in accordance with the rotation of the regulating lever 272. The passive piece 275 has a cam groove 27 with which the cam pin 276 engages.
8 is formed. As shown in FIGS. 16 and 17, the passive plate 274 is formed with an engagement groove 279 that can engage with the cam pin 185 that moves in the cam groove 183 of the swing arm 181. The passive plate 274 is urged by a spring (not shown) so as to slide toward the arm shaft 182 at the base end of the swing arm 181.

Then, as described above, at the standby position where the switching plate 184 shown in FIG. 16 is retracted, the passive plate 274 is slid toward the arm shaft 182 at the base end of the swing arm 181, and the solid line shown in FIG. As shown in FIG.
The engaging lever 272 is rotated clockwise in FIG. 4 through the engagement between the engaging pin 278 and the cam pin 276 of the regulating lever 272, and the leading end of the drive arm 221 is pressed downward via the regulating shaft 273 by the regulating lever 272. And anti-vibration support means
The support of the distal end of the drive arm 221 by the 236c is regulated, and is held at a fixed position. On the other hand, the switching plate 184
When it is advanced to the playback position shown in
274 is pushed toward the distal end side of the swing arm 181, and as shown by a two-dot chain line in FIG. 4, through the engagement between the cam groove 278 of the passive plate 274 and the cam pin 276 of the regulating lever 272, the regulating lever 4 is rotated in the counterclockwise direction in FIG. 4, the pressing of the drive arm 221 by the restriction lever 272 is released, and the tip of the drive arm 221 is supported by the anti-vibration support means 236c.

Next, the structure of the turntable 223 will be described.

As shown in FIGS. 4 to 6, the turntable 223 has a disk-shaped mounting portion 281 on which a CD is mounted, and is attached to the center of the mounting portion 281 so that the center of the CD is mounted. It has a boss 282 with which the hole engages, and the boss 28
A bearing member 283 fixed to the drive shaft 225 is attached to the center of the shaft 2. The boss portion 282 is formed with an annular concave portion 284 that opens upward, and communicates with the concave portion 284 and the outer peripheral surface of the boss portion 282 so that the ball storage portion 285 is open.
Are formed at equal intervals at three locations on the circumference.

The turntable 223 has a chuck mechanism 291 for chucking a CD. The chuck mechanism 291 has three balls 292 stored in each ball storage portion 285 of the boss portion 282, and a concave portion 284 of the boss portion 282 has an annular shape for holding each ball 292 in each ball storage portion 285. The holding member 293 is accommodated so as to be movable in the vertical direction, and a spring for urging the holding member 293 downward is provided.
294 are accommodated, and the closing member 29 is provided on the upper surface of the boss portion 282.
5 is installed.

On the lower surface of the holding member 293, three legs 296 are formed to project through the lower surface of the boss 282, and each ball 29
A pressing portion 297 that allows the ball 292 to be pressed outward is formed on the peripheral surface opposite to the second surface.

When the holding member 293 is lowered, the pressing portion
The ball 292 is pressed outward by the 297 and protrudes from the peripheral surface of the boss portion 282. On the other hand, when the holding member 293 is raised, the pressing by the pressing portion 297 is released and the ball 292 is moved into the boss portion 282.
292 retreat is allowed.

A chuck lever 298 is provided between the turntable 223 and the holding frame 222. The chuck lever 298 is rotatable and vertically movable when a plurality of long holes 299 formed along the circumferential direction of the chuck lever 298 engage a guide shaft 300 projecting from the upper surface of the holding frame 222. It is configured to be possible. Further, a plurality of engagement holes 301 are formed in the chuck lever 298, and a mountain-shaped push-up portion 302 which can be engaged with each of the engagement holes 301 is formed on the upper surface of the holding frame 222 so as to protrude.

The chuck lever 298 has a connecting piece 303 formed on the outer surface of the passive piece 275 of the passive plate 274 so as to be opposed to the connecting piece 303. A connecting pin protruding from the passive piece 275 is formed on the connecting piece 303. A connection hole 305 is formed to be engaged with 304.

Then, as described above, in the state of FIG. 4 in which the passive plate 274 is sliding toward the arm shaft 182 at the base end of the swing arm 181, the chuck lever is connected via the connecting pin 304 of the passive plate 274. 5 is rotated clockwise in FIG. 5 as shown by a two-dot chain line in FIG. 5, each engaging hole 301 of the chuck lever 298 is displaced from the position of the push-up portion 302, and the chuck lever 298 is The chuck lever 298 pushes up the leg portion 296 of the holding member 293, allowing the ball 292 to retreat into the boss portion 282 and allowing the center hole of the CD to engage with the boss portion 282. Is done. On the other hand, when the passive plate 274 is slid to the tip side of the swing arm 181, the chuck lever 298 is moved from the position shown by the two-dot chain line in FIG. And each of the engagement holes 30 of the chuck lever 298 is rotated.
1 coincides with the position of the push-up portion 302, and the chuck lever 298 is lowered, the pushing-up of the holding member 293 by the chuck lever 298 is released, and the ball 292 is pushed through the holding member 293 by the bias of the spring 294 so that the boss portion 282 These three balls 292 are engaged with the edge of the center hole of the CD and chucked.

Next, the operation of the CD changer of this embodiment will be described.

First, loading of a CD will be described.

In the standby position of the loading mechanism 13 in which the loading plate 53 is retracted as shown in FIG. 11, the selection plate 12 is moved to the selected position (the movement of the selected plate 12 to the selected position will be described later). Loading board
53 and the loading lever 56 are moved to the selected position corresponding to the tray 11 where loading is performed.

When the eject button of the operation unit (not shown) is operated, the loading plate 53 is moved forward by the driving of the loading motor 66, as shown in FIG.
The release portion 33 of the leaf spring 31 of the tray 11 selected by the pressing portion 54 of the loading plate 53 is pushed down, and the locking piece 32 drops down integrally with the release portion 33 from the locking hole 27 of the tray plate 21. Then, the pushing portion 54 engages with the engaging step 25 of the tray plate 21 to push the tray plate 21 forward with respect to the holder plate 22. When the tray plate 21 is pushed out from the insertion opening 6 into the eject position shown by the solid line in FIG. 12, the loading motor 66 is stopped.

When the tray plate 21 is pushed out to the eject position, the engaging roller 58 of the loading lever 56 is engaged with the engaging groove 26 of the tray plate 21, and the tray pressing detection switch 70 is turned on by the slide member 62. Have been.

The tray plate 21 pushed out to the eject position
Is further pulled out of the holder plate 22 to the position indicated by the two-dot chain line in FIG.
Can be mounted. When the tray plate 21 is pulled out forward, the engaging roller 58 of the loading lever 56 is
It comes off from the engagement groove 26 of 21.

After the CD is loaded on the tray plate 21, when the tray plate 21 is pushed to the eject position shown by the solid line in FIG. 12 and further pushed from the eject position, the sliding member is inserted via the loading plate 53. 62 is pushed backward and the tray push detection switch 70
Is turned off and the loading motor 66 is driven in the reverse direction.
Alternatively, when the eject button of the operation unit (not shown) is operated again after the tray plate 21 on which the CD is loaded is pushed to the eject position, the loading motor 66 is driven to rotate in the reverse direction.

The loading plate 53 is moved rearward by the reverse rotation of the loading motor 66, the tray plate 21 is pulled backward via the loading lever 56, and the pressing portion 54 of the loading plate 53 releases the release portion of the leaf spring 31. 33 is pushed down and the locking piece is integrated with the release
32 is lowered, and the rear portion of the tray plate 21 contacts the stopper 30 of the holder plate 22. Thereafter, the rearward movement of the loading plate 53 is continued, and the engaging roller 58 of the loading lever 56 is moved.
Is disengaged from the engaging groove 26 of the tray plate 21, the pressing of the release portion 33 by the pressing portion 54 is released, and the locking piece 32 is
Is engaged with the locking hole 27. When the loading plate 53 returns to the loading completed position shown in FIG. 11, that is, the standby position, the loading motor 66 is stopped.

When a CD is taken out, the same operation as when a CD is loaded is performed.

Next, reproduction of a CD will be described.

In the description of the reproduction of the CD, the selection operation of the selection mechanism 81 and the movement operations of the movement of the cam disk 152 by the movement mechanism 82 in the initial rotation stage, the middle rotation stage, and the late rotation stage will be described. explain.

First, the selection operation of the selection mechanism 81 will be described.

When a tray 11 on which a CD to be reproduced is mounted is selected and operated by an operation unit (not shown), FIGS.
As shown in the figure, the selection mechanism 81 is operated to
The drive of 139 moves the selection plate 121 to the selected position.

When the selection plate 121 is moved to the selected position, the selection plate 12 is moved up or down via the cam groove 124 of the selection plate 121 to the selected position.
The loading mechanism 13 and the drive arm body 15 on 12 are moved to a selected position corresponding to the selected tray 11.

Further, when the selection plate 121 is moved to the selected position, the interlocking plate 86 is moved forward or backward via the holding lever 126, and as shown in FIG. Each operating body 85 is raised or lowered to move to the selected position.

Further, as shown in FIGS. 9 and 10,
By moving the selection plate 121 to the selected position, the holding lever 126 is moved.
The holding pin 127 is moved within the selection groove 172 of the holding groove 171 to the selected position facing one holding groove 173.

Therefore, the selection mechanism 81 moves the selection plate 12, the loading mechanism 13 on the selection plate 12, the drive arm body 15, the operating bodies 85, and the like integrally in the vertical direction, and selects one of the selected trays. The player moves to the selected position for playing the 11 CDs.

That is, FIG. 9, FIG. 10 and FIG.
This indicates the selected position when the second tray 11 from the bottom is selected, and the entrance of the guide groove 102 of each operating body 85 is positioned at the height of the guide roller 28 of the second tray 11 from the bottom, and is held. The pin 127 is located at the entrance of the second holding groove 173 from the end of the holding groove 171.

Next, a description will be given of the reproducing movement operation at the initial stage of the rotation of the cam disk 152 by the movement mechanism 82.

As shown in FIGS. 9 and 10, the selection mechanism
After the operation of 81, the operation of the moving mechanism 82 is started, and the cam disk 152 at the standby position shown in FIG. 9 is rotated clockwise in FIG. 9 by the driving of the moving motor 160.

The rotation of the cam disk 152 from the standby position causes the moving plate 84 to move forward through the cam groove 153 and the cam lever 156.

As the moving plate 84 moves forward, the holding pin 127 of the holding lever 126 is moved to the holding groove portion of the holding groove 171.
173, and the selection mechanism 81 is held at the selected position.

Further, by moving the moving plate 84 forward, the moving plate 84 and each operating body 85 are integrally moved forward from the standby position shown in FIG. 13, and as shown in FIG. The 11 guide rollers 28 relatively enter the groove 105 and are guided downward, and the lowermost tray 11 is lowered to form a drive space below the second lower tray 11. You. The second tray 11 from the bottom
Guide roller 28 relatively enters the guide groove 102 of the operating body 85 and is slightly lowered through the first groove portion 103, so that the second-stage tray 11 is lowered slightly. The guide rollers 28 of the third tray 11 from the bottom are placed on the operating body 85, and the lowering of the third or higher tray 11 from the bottom is regulated.

Next, the reproducing movement operation of the cam disc 152 in the middle stage of the rotation by the movement mechanism 82 will be described.

When the cam disk 152 is at the standby position shown in FIG. 9, the slide plate 215 is at the standby position slid to the left as shown in FIG.
Is rotated in the clockwise direction in FIG.
The slide plate 215 is slid rightward through the 153 and the cam lever 212 as shown in FIG.

When the operation plate 198 is in the standby position where it is slid to the left as shown in FIG. 16 integrally with the slide plate 215, the switching plate 184 is in the retracted standby position. Working plate 198 integrated with
Is slid to the right, as shown in FIG. 17, the switching plate 184 is translated forward through the first to third links 192, 193, 199.

When the switching plate 184 is in the retracted standby position shown in FIG. 16, the swing arm 181 of the drive arm body 15 is moved to the tray via the cam groove 183 and the cam pin 185.
The switching plate 184 is moved forward from this standby position, and the swing arm 181 is moved through the cam groove 183 and the cam pin 185 into the front tray 11. And is moved to the drive position shown in FIG.

Next, the reproduction movement operation of the cam mechanism 152 at the latter stage of the rotation of the cam disk 152 by the movement mechanism 82 will be described.

As shown in FIG. 15, the guide rollers 28 of the second lower tray 11 are lowered from the first groove 103 of the operating body 85 into the second groove 104, and the second lower tray 11 is moved downward. 11
Is further lowered. The CD mounted on the second lower tray 11 is transferred to the turntable 223 of the drive arm 15 located at the drive position, and the second lower tray 11 is further lowered. Is moved to a position separated from the lower side.

At this point, the passive plate on the swing arm 181
274 is an arm shaft 182 at the base end of the swing arm 181 shown in FIG.
In the standby position where the chuck lever 298 is slid to the side, the chuck lever 298 is rotated clockwise as shown by a two-dot chain line in FIG. Each engaging hole 301 is disengaged from the position of the push-up portion 302, and the chuck lever 298 is lifted up on the push-up portion 302 and rises.
296 is pushed up, and the retreat of the ball 292 into the boss 282 is allowed.

Therefore, the CD on the tray 11 in the second row from the bottom is
When the CD is transferred to the turntable 223 of the drive arm body 15 located at the drive position, the center hole of the CD
The lower surface of the CD is placed on the mounting portion 281 of the turntable 223.

When the switching plate 184 is advanced to the reproduction position shown in FIG. 1, the passive plate 274 is slid to the tip of the swing arm 181 via the cam pin 185, and the passive plate 274 is moved.
The chuck lever 298 is rotated from the position indicated by the two-dot chain line in FIG. 5 to the position indicated by the solid line in FIG. 5 so that the engagement holes 301 of the chuck lever 298 coincide with the position of the push-up portion 302. The chuck lever 298 is lowered, the pushing up of the holding member 293 by the chuck lever 298 is released, and each ball 292 is projected from the peripheral surface of the boss portion 282 through the holding member 293 by the bias of the spring 294. The ball 292 engages with the upper edge of the center hole of the CD and is chucked to the turntable 223.

Until the CD is chucked on the turntable 223, the cam projections 268, 269 of the switching plate 184 are separated from the rear of the passive rollers 258, 266 as shown by solid lines in FIGS. The support receiving portions 233 and 234 of the support arm 230 are pressed downward by the biasing of the springs 259 and 267 via the regulating levers 254 and 262, and the support arms by the respective vibration isolating support means 236a and 236b.
The support at both ends of 230 is regulated, and support arm 230 is held at a fixed position.

In this state, when the switching plate 184 is advanced to the reproducing position shown in FIG. 1, it engages with the passive rollers 258 and 266 on the cam projections 268 and 269, and the springs 259 and 267
Levers 255 and 263 and regulating levers against the bias of
The lock portions 254 and 262 are rotated to the two-dot chain lines, respectively, and the engaging portions 257 and 265 of the regulating levers 254 and 262 are lifted to release the pressing of the support receiving portions 233 and 234 of the support arm 230 downward. The support arm 23 is supported by the vibration support means 236a and 236b.
Both ends of 0 are supported in an anti-vibration state.

Similarly, the CD is stored on the turntable 223.
16 and 4, at the standby position where the switching plate 184 is retracted, the passive plate 274 is slid toward the arm shaft 182 at the base end of the swing arm 181 until the chucking position is reached. As shown by the solid line in FIG.
4 through the engagement between the cam groove 278 of FIG. 4 and the cam pin 276 of the control lever 272, the control lever 272 is rotated clockwise in FIG. The side is pressed downward, and the support of the distal end of the drive arm 221 by the anti-vibration support means 236c is regulated and is held at a fixed position.

In this state, when the switching plate 184 is advanced to the reproducing position shown in FIG.
4 is pushed to the tip side of the swing arm 181, and as shown by a two-dot chain line in FIG. 4, the regulating lever is engaged with the cam groove 278 of the passive plate 274 and the cam pin 276 of the regulating lever 272.
272 is rotated counterclockwise in FIG.
The pressing of the drive arm 221 downward by the drive arm 272 is released, and the end of the drive arm 221 is supported in a vibration-proof state by the vibration-proof support means 236c.

When the CD is chucked on the turntable 223 and supported in a vibration-proof state, the CD can be reproduced. The CD is rotated by driving the CD rotation motor 224 and the pickup of the head 227 is picked up. 226
To read and reproduce the CD.

Next, from the CD reproducible state, the apparatus returns to the standby state for reproducing the CD on another tray 11 or ejecting or loading the CD.

The return from the reproducible state to the standby state is performed in the same manner as the above-described operation for shifting from the standby state to the reproducible state, and the movement of the cam disk 152 by the moving mechanism 82. The moving operation in the initial stage of reverse rotation, the middle stage of reverse rotation, and the late stage of reverse rotation will be described separately.

First, the standby return operation at the initial stage of reverse rotation of the cam disk 152 by the moving mechanism 82 will be described.

The cam disk 152 at the reproduction position shown in FIG.
Is rotated counterclockwise in FIG. 10 by the driving of the moving motor 160.

When the cam disk 152 is rotated in the reverse direction, the slide plate 215 and the operation plate 198 shown in FIG. 17 are moved to the left, and the switching plate is switched via the first to third links 192, 193, 199. 184 is translated backward.

By moving the switching plate 184 backward,
The passive plate 274 shown in FIG. 1 is moved to the arm shaft 182 side of the base end of the swing arm 181, and as shown by a solid line in FIG.
The locking lever 272 is rotated clockwise in FIG. 4 through the engagement between the cam groove 278 of the locking lever 274 and the cam pin 276 of the locking lever 272. The side is pressed downward, and the support of the distal end of the drive arm 221 by the anti-vibration support means 236c is regulated, and is held at a fixed position.

Similarly, by moving the switching plate 184 backward, as shown in FIGS.
The fourth cam projections 268, 269 are moved rearward from the passive rollers 258, 266, and are urged by the springs 259, 267 via the control levers 254, 262 to support the support receiving portion 23 of the support arm 230.
3 and 234 are pressed downward, and each anti-vibration support means 236a,
The support at both ends of the support arm 230 by the 236b is regulated, and the support arm 230 is held at a fixed position.

When the passive plate 274 shown in FIG. 1 is moved toward the arm shaft 182 at the base end of the swing arm 181 by the backward movement of the switching plate 184, the connecting pin of the passive plate 274 is moved.
5, the chuck lever 298 is rotated clockwise as shown by a two-dot chain line in FIG.
8 is disengaged from the position of the push-up portion 302, the chuck lever 298 is lifted up on the push-up portion 302 and lifted, and the leg portion 296 of the holding member 293 is pushed up by the chuck lever 298, and the boss portion 282 Retreat of the ball 292 into is allowed. Thereby, the chuck of the CD is released.

Each of the operating members 85 is moved rearward integrally with the switching plate 184, and the guide rollers 28 of the tray 11 at the second stage from the bottom shown in FIG. The first tray 103 is moved up into the first groove 103 and the second tray 11 is moved up. When the second tray 11 from the bottom rises, the CD placed on the turntable 223 is received on the tray 11.

Next, the standby return operation in the middle stage of the reverse rotation of the cam disk 152 by the moving mechanism 82 will be described.

By moving the switching plate 184 backward,
As shown in FIG. 16, the swing arm 181 of the drive arm body 15 is moved to the tray via the cam groove 183 and the cam pin 185.
It is evacuated backward from inside 11 and moved to the standby position.

Next, the standby return operation of the cam disc 152 at the latter stage of the reverse rotation of the cam disk 152 by the moving mechanism 82 will be described.

By rotating the cam disk 152 counterclockwise in FIG. 10, the cam groove 153 and the cam lever 156 are rotated.
, The moving plate 84 is moved backward and returned to the standby position shown in FIG.

As the moving plate 84 moves backward, the guide roller 28 of the lowermost tray 11 shown in FIG. 14 is raised via the guide piece 91 of the moving plate 84, and returns to the standby state.

As described above, the tray 11 is moved by the moving mechanism 82.
Is provided with the holding means 83 for holding the selection mechanism 81 at the selection position of the selection mechanism 81 when the tray 11 is moved, so that the selection position does not shift due to vibration or the like, and it is possible to prevent poor selection and misalignment of the tray 11 .

Further, the operating members 85 arranged on both sides of the plurality of trays 11 are moved in the direction parallel to the trays 11 by the operation of the selecting mechanism 81, and the operating members 85 of the trays 11 selected by the operation of the moving mechanism 82 are moved. Since the drive space is formed adjacently in the parallel direction, the tray 11 can be reliably selected by the operating body 85 whose selection position is held by the holding means 83 via the selection mechanism 81.

Further, a holding pin 127 and a holding groove 171 are provided as the holding means 83, and the holding pin 127 is moved to any selected position in the selection groove 172 of the holding groove 171 by the operation of the selection mechanism 81. The operation of the mechanism 82 allows the tray to enter the holding groove 173 for each tray of the holding groove 171 from any one of the selected positions, thereby reliably holding the selected position.

The information recording disk selecting device 14 is provided, and the operation of the selecting mechanism 81 causes the drive arm 22 to operate.
1 in the direction parallel to the tray 11, and the moving mechanism 82 moves the drive arm 221 forward and backward with respect to the selected CD drive position of the tray 11, so that the tray 11 and the drive arm 221 are selected. 81 and can be integrally held by the holding means 83, so that the drive of the CD can be surely performed.

When the drive arm 221 is swung, C
In the CD changer which is moved forward and backward with respect to the drive position of D, the drive arm 22 is placed on the swing arm 181 which is swung about the arm shaft 182 and moved forward and backward with respect to the tray 11.
1 is supported in an anti-vibration state via the anti-vibration support means 236a to 236c, so that the vibration of the drive arm 221 during driving can be suppressed and the drive of the CD can be stabilized.

Further, a support arm 230 is provided at a fixed position and the drive arm 221 is swingably connected to the drive arm 221. When the drive arm 221 is swung to the drive position, the support arm 236a to 236c is moved. The tip side of the drive arm 221 corresponding to the apex position of the substantially triangle, the connection side between the drive arm 221 and the support arm 230, the support arm
Since the drive arm 221 is disposed at the three points on the tip side of the drive unit 230, the attitude of the drive arm 221 during drive can be stabilized, the support state of the CD can be stabilized, and the drive of the CD can be further stabilized.

Further, since the anti-vibration support means 236c is provided on the drive arm 221, the support state of the CD during driving can be further stabilized, and the drive of the CD can be more reliably stabilized.

Further, the anti-vibration support means 236a to 236c have a spring 240 for lifting the drive arm 221 side, and also support a damper 238 for supporting in an anti-vibration state and a connecting shaft 239 inserted and connected to the damper 238. Because of this, the structure of support, vibration isolation and connection can be integrated, and can be made compact.

Further, with the regulating means 251, the CD is chucked by the turntable 223, and the anti-vibration support means 23 is held.
6a to 236c allow vibration-proof support,
In order to hold the drive arm 221 in a fixed position by restricting the support in the anti-vibration state by the anti-vibration support means 236a to 236c in a state other than the time of chucking, even if the drive arm is provided with the anti-vibration support means 236a to 236c, The forward and backward movement of the 221 with respect to the tray 11 and the chucking of the CD by the turntable 223 can be reliably performed.

Further, the CD can be disengaged in the restricted state of the regulating means 251 and the CD can be disengaged in the permitted state of the regulating means 251.
Chuck mechanism 291 for chucking the turntable 223
Is provided, the CD can be chucked and dechucked in conjunction with the regulating means 251, and another mechanism for holding the CD between the turntable 223 and the CD can be eliminated and simplified.

Further, the trays 11 are arranged in a plurality of stages, and one of the trays 11 in the plurality of stages is selected by the selection mechanism 81, and the drive arm 221 is moved to the corresponding selected position. Thus, even in a configuration in which a drive space is formed adjacent to the selected tray 11 in the parallel direction and in which the drive arm 221 can enter, the drive of the CD can be stabilized.

Further, since a plurality of trays 11 are incorporated in the body 1, a CD changer for selectively driving a plurality of CDs can be miniaturized.

Note that the information recording disk has a read-only
Includes both recording-only, recording and playback, and includes, for example, compact discs, video discs, magneto-optical discs, and flexible magnetic discs.

The drive unit includes reproduction-only, recording-only, and both recording and reproduction. Similarly, the head unit includes reproduction-only, recording-only, and both recording and reproduction.

[0172] The drive means the recording or reproduction of the information recording disk, and includes the rotation of the information recording disk.

[0173]

According to the information recording disk drive device of the first aspect, in the information recording disk drive device in which the drive arm is swung to advance and retreat with respect to the drive position of the information recording disk, the arm shaft is supported by the fulcrum. The drive arm is supported in an anti-vibration state via the anti-vibration support means on the oscillating arm which is oscillated and moved back and forth with respect to the tray. Drive can be stabilized.

According to the information recording disk drive of the second aspect, in addition to the effect of the information recording disk drive of the first aspect, in addition to the support of the information recording disk drive, the drive arm is arranged at a fixed position and the drive arm is swingably connected. Arm, and the vibration isolating support means includes a drive arm, a tip end side of the drive arm corresponding to a substantially triangular apex position in a state where the drive arm is swung to the drive position, a connection side of the drive arm and the support arm, Since the drive arm is disposed at the three points on the distal end side, the posture of the drive arm at the time of driving is stabilized, the support state of the information recording disk is stabilized, and the drive of the information recording disk can be further stabilized.

According to the information recording disk drive of the third aspect, in addition to the effect of the information recording disk drive of the second aspect, the anti-vibration support means is provided on the drive arm, so that the drive arm at the time of driving can be used. The support state of the information recording disk can be further stabilized, and the drive of the information recording disk can be more reliably stabilized.

According to the information recording disk drive of the fourth aspect, in addition to the effect of the information recording disk drive of the first aspect, the information recording disk is chucked by the turntable by the regulating means. In this state, the support in the anti-vibration state by the anti-vibration support means is allowed, and the support in the anti-vibration state by the anti-vibration support means is controlled in a state other than the time of chucking to hold the drive arm in a fixed position. Even with the vibration support means, the drive arm can be moved forward and backward with respect to the tray and the information recording disk can be chucked by the turntable without fail.

According to the information recording disk drive device of the fifth aspect, in addition to the effect of the information recording disk drive device of the fourth aspect, the information recording disk can be disengaged and restricted in the restricted state of the restricting means. Since the turntable is provided with a chuck mechanism for chucking the information recording disk in an allowable state of the means, the information recording disk can be chucked and dechucked in conjunction with the regulating means,
This eliminates the need for a separate mechanism for holding the information recording disk between the turntable and the information recording disk, thereby simplifying the operation.

According to the information recording disk drive of the sixth aspect, in addition to the effect of the information recording disk drive of any one of the first to fifth aspects, a plurality of trays are provided and a plurality of trays are provided by the selection mechanism. One of the trays is selected and the drive arm is moved to the corresponding selected position, and a drive space is formed adjacent to the tray selected by the moving mechanism in the parallel direction so that the drive arm can enter. Also in the configuration, the drive of the information recording disk can be stabilized.

According to the information recording disk drive of claim 7, in addition to the effect of the information recording disk drive of any one of claims 1 to 6, a plurality of trays are incorporated in the drive main body. In addition, an information recording disk drive that selectively drives a plurality of information recording disks can be downsized.

[Brief description of the drawings]

FIG. 1 is a plan view on a selection plate showing one embodiment of an information recording disk drive device of the present invention.

FIG. 2 is a sectional view corresponding to the section AA in FIG. 1;

FIG. 3 is a sectional view corresponding to a section taken along line BB of FIG. 1;

FIG. 4 is a front view of the drive arm body with a part of a distal end portion cut away.

FIG. 5 is a plan view of the turntable part.

FIG. 6 is a side view of the turntable part.

FIG. 7 is a perspective view of the information recording disk drive device.

FIG. 8 is a plan view of the information recording disk drive device with an upper plate removed.

FIG. 9A is a plan view of the disk selecting device in a standby state, and FIG. 9B is a rear view of the disk selecting device in a standby state.

FIG. 10 is a plan view of the disk selecting device.

FIG. 11 (a) is a plan view when the loading mechanism is loaded, and FIG. 11 (b) is an inner side view of a part when the loading mechanism is loaded.

12A is a plan view of the loading mechanism when the loading mechanism is ejected, and FIG. 12B is a cross-sectional view of a part of the loading mechanism when the tray is ejected.

FIG. 13 is a sectional view of the moving mechanism of the disk selecting device in a standby state.

FIG. 14 is a cross-sectional view showing a state where the tray is selectively moved by the moving mechanism of the disk selecting device.

FIG. 15 is a cross-sectional view showing a state where the selection movement of the tray by the movement mechanism of the disk selection device is completed.

FIG. 16A is a plan view of the drive arm when the drive arm is on standby, and FIG. 16B is a rear view of a part of the drive arm when the drive arm is on standby.

FIG. 17 (a) is a plan view of the drive arm body during reproduction, and FIG. 17 (b) is a rear view of a part of the drive arm body during reproduction.

[Explanation of symbols]

 1 Body as Drive Unit 11 Tray 81 Selection Mechanism 82 Moving Mechanism 181 Swing Arm 182 Arm Shaft 221 Drive Arm 223 Turntable 224 CD Rotation Motor as Drive 225 Head 230 Support Arms 236a to 236c Anti-vibration Support Means 251 Regulatory means 291 Chuck mechanism

Claims (7)

[Claims] 1. A tray for supporting an information recording disk, a swing arm which is swung about an arm shaft located on a side of the tray and is moved forward and backward with respect to the tray, and A turntable arranged to chuck the information recording disk, a drive unit for rotating the turntable, a drive arm having a head unit for performing at least one of reproduction and recording of the information recording disk, and a swing arm And an anti-vibration supporting means for supporting the information recording disk drive in an anti-vibration state. 2. The apparatus according to claim 1, further comprising a support arm disposed at a fixed position and having a drive arm swingably connected thereto, wherein the vibration isolating support means is provided at a substantially triangular apex position when the drive arm is swung to the drive position. 2. The information recording disk drive device according to claim 1, wherein the information recording disk drive device is disposed at three points: a tip side of the corresponding drive arm, a connection side between the drive arm and the support arm, and a tip side of the support arm. 3. The information recording disk drive device according to claim 2, wherein at least one of the vibration isolation support means is provided on the drive arm. 4. An information recording disk is chucked by a turntable in an allowable state in which the drive arm is supported by the anti-vibration support means, and the drive arm is supported by the anti-vibration support means in a state other than the time of chucking. 4. The information recording disk drive device according to claim 1, further comprising a regulating means for regulating the drive arm to a regulated state for holding the drive arm at a fixed position. 5. The turntable is provided with a chuck mechanism that is interlocked with the regulating means, enables the information recording disk to be disengaged when the regulating means is regulated, and chucks the information recording disk when the regulating means is allowed. 5. The information recording disk drive according to claim 4, wherein: 6. A plurality of trays are arranged in parallel and movably arranged in the parallel direction, and one of the plurality of trays for driving an information recording disk is selected. A selection mechanism for moving a drive arm to a selected position corresponding to a selected tray; and a drive for moving the tray so that the drive arm can enter adjacent to a tray selected by the selection mechanism in a parallel direction. 6. The information recording disk drive device according to claim 1, further comprising a moving mechanism that forms a space. 7. The information recording disk drive device according to claim 1, further comprising a drive device main body, wherein a plurality of trays are incorporated in the drive device main body.