JP3171534B2 - Recording and playback device for recording and playback discs - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing disk for mounting a magazine containing a plurality of recording / reproducing disks and selectively recording / reproducing one of the recording / reproducing disks in the magazine. Related to the device.

[0002]

2. Description of the Related Art Conventionally, as a recording / reproducing apparatus adopting a recording / reproducing method for selectively recording / reproducing one of a plurality of superimposed recording / reproducing discs, for example, a compact disc (hereinafter referred to as a CD) is known. There is a CD changer that performs playback.

[0003] This CD changer is disclosed in
As described in Japanese Unexamined Patent Publication No. 85992 or Japanese Unexamined Utility Model Application Publication No. Sho 62-90452, there is provided a magazine for accommodating, for example, six CDs in a stack, and a changer device for setting and reproducing the magazine. . The changer device includes a magazine insertion space for accommodating a magazine to be set, and a reproduction space portion for pulling out an arbitrary compact disk from the magazine in a direction parallel to the disk radial direction and performing reproduction on a side of the magazine insertion space. And

However, in this CD changer, it is necessary to separately provide a magazine insertion space and a reproduction space in the changer device, and the changer device is relatively large. Therefore, for example, in the case of a six-unit CD changer for a car, it is impossible to install the changer device in the central portion of the dashboard. Therefore, only the controller is incorporated in the central portion, and the changer device is separately installed in a trunk or the like. ing.

Therefore, as described in, for example, JP-A-3-235248, the magazine inserted into the magazine insertion space of the changer device is disassembled in the disk stacking direction, and the magazine formed between the holders is disassembled. By inserting a playback unit incorporating a CD rotation drive motor and a laser pickup into the gap, and performing CD playback in the magazine insertion space, there is no need to provide a separate playback space, and the lateral area of the changer device is reduced by about half. A compact CD changer has been proposed.

The magazine used in the CD changer has a pair of upper and lower halves provided so as to be vertically disassembled from each other, and holds a recording / reproducing disk between the upper and lower halves. Are arranged without being connected to each other. This magazine assembly and disassembly structure is provided with a plurality of cylinders on the peripheral edge of the lower half, and a locking member that can be disengaged from the disk circumferential direction at the upper end of each cylinder on the inner surface of the upper half. It is provided as possible. In the assembled state of the magazine, the upper half and the lower half are maintained in a connected state by the engagement of the locking members with the upper ends of the respective columns, and the gap between the upper half and the lower half is maintained. To hold a plurality of holders. Also, when disassembling the magazine, the locking member is rotated to release the engagement with each column, the upper half and the lower half are disassembled from each other, and the gap between the disassembled upper half and the lower half is removed. Makes the holder movable.

[0007] A changer device using this magazine includes:
A locking member rotating means for rotating the locking member, and an opening / closing selection mechanism for disassembling and moving the lower half and each of the plurality of holders in the disk stacking direction are provided. This opening / closing selection mechanism is divided into two places around the magazine insertion position, and is provided with a plurality of arms respectively engaging with the lower half body and the plurality of holders, a cam for swinging the plurality of arms, and the like. Each arm swings in conjunction with the rotation of the cam, and moves the holder below the holder holding the lower half body and the CD to be played downward, so that the playback unit enters. To release.

[0008]

However, the recording / reproducing apparatus described in Japanese Patent Laid-Open No. 3-235248 has a structure in which the upper half, the lower half, and a plurality of holders of the magazine are assembled and disassembled with each other. Therefore, the opening / closing selection mechanism for disassembling and moving the lower half of the magazine and the plurality of holders in the disk stacking direction requires a plurality of arms for supporting the lower half, the plurality of holders, and the respective arms. In order to swing the cam, a cam having a complicated and high-accuracy structure is required, and it is necessary to divide the cam into two parts around the magazine insertion position. Therefore, the structure of the opening / closing selection mechanism is complicated and large, and there are many engagement points between the lower half and each of the plurality of holders and each arm, and all are caused by variations in the positional relationship between the magazine and the opening / closing selection mechanism. However, there is a problem that the engagement at the engagement portion is not reliable, and a high precision is required for the positional relationship between the magazine and the opening / closing selection mechanism and the shape of the cam.

The present invention has been made in view of the above points, and can simplify and downsize a mechanism for selecting a holder holding a recording / reproducing disc by opening and closing a magazine, and opening and closing the magazine and selecting a holder. It is an object of the present invention to provide a recording / reproducing apparatus for a recording / reproducing disc capable of reliably performing an operation.

[0010]

SUMMARY OF THE INVENTION A recording / reproducing apparatus for a recording / reproducing disk according to the present invention enables an outer body and an inner body to be rotatable in mutually opposite disk circumferential directions and to rotate in the disk circumferential direction. With the movement, it keeps the connected state that it can be opened and closed by contacting and separating from each other in the disk stacking direction,
A recording having a magazine in which a plurality of holders respectively holding a plurality of recording / reproducing discs are movably accommodated in the disc stacking direction along with the rotation of the disc in the circumferential direction, and a magazine insertion portion for making the magazine detachable. A reproducing apparatus main body, an opening / closing mechanism for rotating an inner body of the magazine inserted into the magazine insertion portion in a disk circumferential direction, and a holder selectively holding a recording / reproducing disk for performing recording / reproduction among the holders. And a selection mechanism that engages and locks.

[0011]

According to the recording / reproducing apparatus for recording / reproducing discs of the present invention, when the magazine inserted into the magazine insertion portion of the main body of the recording / reproducing apparatus is opened to the recording / reproducing state, the recording / reproducing disc for performing recording / reproducing of the holder is selected by the selecting mechanism. The held holder is selectively locked, and the outer body and the inner body are rotated in mutually opposing disc circumferential directions by the opening / closing mechanism. Separate and open the outer body and inner body. As a result, the holder below the holder locked by the selection mechanism descends while rotating in the circumferential direction of the disk by its own weight, opening a space for recording and reproduction below the holder locked by the selection mechanism. . When the magazine is closed, the outer body and the inner body are rotated in the disk circumferential direction by the opening / closing mechanism and approach each other in the disk stacking direction with the rotation in the disk circumferential direction. Close the inner body. As a result, the lowered holder approaches in the disk stacking direction and closes a space for recording and reproduction.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of an embodiment of the present invention will be described below with reference to the drawings.

In this embodiment, a description will be given of a CD changer which handles a compact disc for reproduction only (hereinafter, referred to as a CD) as a recording / reproducing disc.

As shown in FIG. 2, the CD changer is C
The magazine 1 includes a magazine 1 for storing D, and a changer device 2 for mounting and reproducing the magazine 1.

The magazine 1 is provided with an outer body 11 and an inner body 12 as shown in FIG. 7 (in a state where the outer body 11 is opened in a changed direction) or FIG. 9, and is a magazine to be inserted into the changer device 2. An opening 13 is formed on the end face in the insertion direction.

The outer body 11 includes an upper plate portion 14 and the upper plate portion 14.
It is integrally formed from a peripheral wall portion 15 extending downward from the lower surface except for the opening portion 13, a parallel side wall portion 16 on both sides in the magazine insertion direction, and a side wall portion 17 opposite to the magazine insertion direction. Both edges facing the opening 13 of the peripheral wall portion 15 are formed with inclined edges 18 inclined downward and leftward, and guide grooves 19 are formed in parallel with the inner edge of each inclined edge 18. At three locations on the inside of each inclined edge 18 of the peripheral wall portion 15 and on the inner surface facing the opening 13, inclined projections 20 having the same inclination as the inclined edge 18 are formed to project.

The inner body 12 is formed integrally with a substantially circular bottom plate portion 21 and a peripheral wall portion 22 protruding upward from the periphery of the bottom plate portion 21 except for the opening 13. Both edges facing the opening 13 of the peripheral wall portion 22 are formed with an inclined edge portion 23 having the same inclination as the inclined edge portion 18 inclined downward and leftward, and the inclined edge portion 23 is formed on the inside facing the opening portion 13 of the peripheral wall portion 22. A guide groove 24 with which the projection 20 is engaged is formed. Each inclined edge 23 of the peripheral wall 22
Each of the inclined edges 23
Slant projections 25 having the same inclination as the above are formed to protrude, respectively. A lever portion 26 is formed on the outer surface of one end of the peripheral wall portion 22 so as to project therefrom. Further, a notch-shaped engaging concave portion 27 is formed at an edge of the bottom plate portion 21 facing the opening portion 13.

The inner body 12 is incorporated inside the lower surface of the outer body 11, so that the inclined projection 20 and the guide groove 24 are slidably engaged with each other, and are slidably engaged with the guide groove 19 of the outer body 11. A screw 29 is screwed to the inner body 12 via a sliding member 28 which is to be moved.
When 12 rotates counterclockwise, it moves downward, and when it rotates clockwise, it moves upward.

Between the outer body 11 and the inner body 12,
A plurality of holders 30 each mounting a CD one by one, and a separator 31 arranged between the holders 30 are arranged in an overlapping manner.

The holder 30 is formed in a disk shape having a fan-shaped notch 32 facing the opening 13, and a holding wall 33 for holding a peripheral portion of a mounted CD is formed on a peripheral upper surface thereof. Grooves 34, 35 with which the respective inclined protrusions 20, 25 are respectively engaged are formed at three positions on the peripheral edge portion, and a lever portion 36 is formed to protrude outward from the peripheral edge at one end facing the cutout portion 32. As shown in FIG. 8, the levers 36 of the holders 30 are arranged so as to be lined up and down in a closed state.

The separator 31 is formed in a disk shape having a hole 37 at the center, and each of the inclined projections 20 and 25
A guide member 40 in which grooves 38 and 39 with which are engaged is formed. Guide member 40 facing the other end of opening 13
The position of the edge 41 of FIG. 12 is shown in FIG.
As shown in the figure, they are arranged so as to be lined up and down in a closed state.

Then, as shown in FIG. 9, for example, as shown in FIG. 9, the magazine 30 is rotated counterclockwise together with the inner body 12 with respect to the holder 30 on which the selected CD is mounted, so that the lower side thereof is rotated. The holder 30 moves downward while rotating counterclockwise, and a gap is formed between the holder 30 and the upper holder 30, and the reproducing operation of the selected CD is performed through the gap. When the magazine 1 is opened, the lever 36 of the lower holder 30 that has been moved relative to the position of the lever 36 of the holder 30 that is not moved moves counterclockwise and downward, and the edge of the separator 31 that is not moved. The edge 41 of the lower separator 31 moved to the position 41 moves counterclockwise and downward.

Next, as shown in FIGS. 1 to 6, the changer device 2 has a case as a recording / reproducing device main body.
The case 51 is formed in a substantially square frame shape slightly larger than the magazine 1, and a magazine insertion portion 54 is provided between an upper case 52 and a lower case 53 of the case 51.
Is formed, and an insertion port 55 for inserting and removing the magazine 1 is formed on one side surface of the magazine insertion portion 54.

In the case 51, a recording / reproducing unit 56 for reproducing a CD is disposed at a corner on the far side of the magazine insertion section 54, and a selection mechanism for selecting a CD to be reproduced on one side of the magazine insertion section 54. An opening / closing unit 58 as an opening / closing mechanism for opening / closing the magazine 1 is provided at a lower portion on the back side of the magazine insertion portion 54, and a selection unit 57 is provided.
A drive unit 59 for driving the opening / closing unit 58 is provided.

The recording / reproducing unit 56 has an arm 61 having a substantially U-shaped cross section with an open upper surface, and a cylindrical portion 62 serving as a rotation center is formed at one end of the arm 61.
A holder 63 is formed at the other end.

In the cylindrical portion 62, a female screw 64 is formed on the inner circumference, a fan-shaped gear portion 65 is formed on the upper side of the outer circumference, and a rib 66 is formed on the lower side of the outer circumference. The rib 66 has a concave portion 67 for positioning at the standby position and a concave portion 68 for positioning at the reproduction position.

A laser pickup 69 is provided inside the arm 61.
The laser pickup 69 is configured to be movable along the arm 61 by, for example, a feed motor, and irradiates the laser beam upward to receive and read the reflected light reflected by the CD.

A motor 70 is incorporated in the lower part of the holder 63, and a clamp body 71 which is rotated by driving the motor 70 is provided on the upper surface. The clamp body 71 has a support portion 72 that supports the lower edge of the hole h of the CD and a boss 73 that enters the hole h, and guides the hole h to the boss 73 above and around the boss 73. A taper portion 74 is formed, for example, in a state where the hole h and the boss 73 are fitted, a clamp member that engages with the upper edge of the hole h from the boss 73 is configured to protrude and clamp. .

A screw shaft 75 is erected in the case 51 so as to be rotatable. The cylindrical portion 62 of the arm 61 is mounted on the outer periphery of the screw shaft 75.
And the female screw 64 of the cylindrical portion 62 is screwed to the male screw 76 of the screw shaft 75. A gear 77 is formed at the upper end of the screw shaft 75. A gear 79 of a gear shaft 78 rotatably attached to the upper case 52 meshes with the gear 77, and the gear shaft 78
The worm gear 82 of the motor 81 attached to the upper case 52 is screwed into the gear 80. Accordingly, the forward / reverse driving of the motor 81 causes the screw shaft 75 to rotate forward / reverse, and the recording / reproducing unit 56 to move in the vertical direction.

In the selection unit 57, a bracket 91 is provided upright in a case 51, and a plurality of guide grooves 92 are formed in the bracket 91 in a vertical direction.
Each stopper 93 which is slidably fitted in each guide groove 92
Thereby, a slide plate 94 is slidably mounted in a vertical direction. On the slide plate 94, an inclined edge 95 having the same inclination as the inclined edge 23 of the magazine 1 is formed, and a guide groove 96 is formed inside the inclined edge 95, and the lower end of the guide groove 96 is located. Drive unit 59 from the lower edge of the tip
The engagement piece 97 protrudes in the direction of. Note that the bracket 91 and the slide plate 94 are formed in an arc shape according to the shape of the circumferential surface portion of the magazine 1.

A selection member 98 is disposed on the outer surface side of the slide plate 94. The selection member 98 has a slide portion 99 which is fitted into the guide groove 96 and is formed so as to protrude. Stopper 10 that slidably engages the inner surface
By being fixed, 0 is slidably attached along the guide groove 96. The selection member 98 is formed with a holding frame 101 having a substantially U-shaped cross section which projects inward through the upper side of the inclined edge 95 of the slide plate 94 and fits on both sides of the lever 36 of the magazine 1. The portion 102 is formed so as to protrude.

The opening / closing unit 58 includes an arc-shaped slide body 111 corresponding to the circumferential surface of the magazine 1 on the opening 13 side.
have. The slide body 111 is attached to the upper surface of the lower case 53 so as to be slidable in the circumferential direction of the disk by stoppers 113 fitted in a pair of grooves 112 formed near both ends.

The slide body 111 has a gear portion 11 on one end outer surface.
4 and a recess 115 for positioning the open position is formed below the gear portion 114, and a closing projection 116 for engaging with the lever 26 of the magazine 1 is provided on the upper surface of one end.
Is erected.

At the other end of the slide body 111, a support shaft 117 is erected, and a screw shaft 118 is rotatably erected.
An elevating plate 120 having an attaching portion 119 screwed to 118 is attached. The lifting plate 120 is provided with a substantially L-shaped opening engagement plate 121 having a width in the vertical direction which can be engaged with the engagement concave portion 27 of the inner body 12 of the magazine 1. A gear 122 is fixed to the screw shaft 118, and this gear 12
2, a gear 123 rotatably provided on a support shaft 117 meshes with the gear 123, and a worm gear 126 of a motor 125 mounted on a slide body 111 on a gear 124 integrated with the gear 123.
Meshes. Accordingly, the forward / reverse rotation of the motor 125 causes the screw shaft 118 to rotate forward / backward, and the lift plate 120 and the engagement plate
121 moves up and down.

The drive unit 59 has a shaft 51 inside a case 51.
131 is rotatably erected.
A gear 132 of a gear shaft 133 rotatably mounted on the lower case 53 meshes with the gear 132, and a motor 136 mounted on the lower case 53 with the gear 135 of the gear shaft 133. The worm gear 137 meshes. Accordingly, the shaft 131 is rotated in the forward rotation direction (the direction indicated by the arrow in FIG. 1) and in the reverse rotation direction by the forward / reverse drive of the motor 136.

On the upper side of the gear 132 of the shaft 131, a gear 138 capable of meshing with the gear 114 of the slide body 111 is formed so as to protrude only in a predetermined angle range corresponding to the meshing range. A disc-shaped cam 140 having a notch 139 is formed corresponding to the protruding area of the cam.

Above the gear portion 138 of the shaft 131, an arm is provided near the position of the downstream portion of the gear portion 138 in the forward rotation direction.
A gear portion 141 capable of meshing with the gear portion 65 of the projection 61 is formed so as to protrude over the entire region in the axial direction.

Above the gear 138 of the shaft 131, a cylindrical tube 142 is fitted to the gear 141 so as to be slidable in the vertical direction. A groove 143 is formed on the lower peripheral edge of the cylindrical body 142 so that the rib 66 of the arm 61 and the engaging piece 97 of the slide plate 94 engage with each other. A gear portion 144 is formed to be able to mesh with the gear portion 102 of the member 98. Therefore, the cylinder 14
2, the arm 61 and the slide plate 94 move up and down integrally.

A gear 151 of the shaft 131 is engaged with a gear 151 rotatably provided on the lower case 53 so as to be rotatable with the lower case 53. A gear 153 erected rotatably on the case 53 is meshed with the gear 153, and a cam shaft 154 is integrally formed on the gear 153. The cam shaft 154 has a concave surface 67 or a concave portion of the rib 66 of the arm 61.
A notch 155 is formed on the circumferential surface of the notch 168 so as to engage with the rib 66 and allow the arm 61 to rotate when the arm 61 rotates.

Next, the operation of this embodiment will be described.

In the standby state (FIGS. 1 to 6 are standby states), the arm 61 of the recording / reproducing unit 56 is retracted to the rear side of the magazine insertion portion 54, and the recess of the arm 61 The cam shaft 154 is engaged with the peripheral surface of the cam shaft 154 and is locked at the retracted position, and the height position is maintained at the uppermost position, the lowermost position, the intermediate position, or the height at the time of the previous reproduction operation. . The end of the selection member 98 is regulated to abut on the peripheral surface of the cylindrical body 142, and the selection member 98 is guided by the guide groove of the slide plate 94.
It is located at the highest position of 96. Slide body 111
Is most rotated in the counterclockwise direction in FIG.
The gear portion 138 of the shaft 131 is meshed with and held at 4. The elevating plate 120 and the engagement plate 121 are located at the most lowered positions.

The magazine 1 is set by inserting and mounting each CD with its recording surface as the lower surface through the opening 13 on the upper surface of each holder 30 of the magazine 1, and using this magazine 1 with the opening 13 side as the front in the insertion direction. It is inserted into the magazine insertion part 54 through the insertion port 55 of the device 2.

When the magazine 1 is inserted into the changer device 2, the lever 36 of the magazine 1 is moved to the holding frame 101 of the selection member 98.
And the engagement recess 27 of the inner body 12 of the magazine 1 engages with the engagement plate 121 of the slide body 111 and the lever section.
26 faces the projection 116 of the slide body 111.

When a user operates an operation unit for controlling the changer device 2 and selects a CD mounted on a certain holder 30, first, a motor for lifting and lowering is selected.
The arm 81 of the recording / reproducing unit 56 moves up and down to move to a position slightly lower than the holder 30 on which the selected CD is mounted. Along with the movement of the arm 61, the slide plate 94 moves up and down integrally via the cylindrical body 142, and the holding frame 101 of the selection member 98 that moves integrally with the slide plate 94 selects the CD. Is moved to a height at which it is engaged with the lever portion 36 of the holder 30 on which is mounted.

Thereafter, the motor 136 is driven to rotate forward and the shaft
131 starts forward rotation.

At the beginning of the forward rotation of the shaft 131, the slide 111 slides counterclockwise in the disk circumferential direction through the engagement of the gear 138 of the shaft 131 with the gear 114 of the slide 111. The inner body 12 of the magazine 1 with which the engaging plate 121 of the slide body 111 engages is integrally rotated counterclockwise and descends, and at the same time, the holding frame 101 of the selection member 98 is fitted to restrict the rotation. The holder 30 and the separator 31 below the holder 30 are rotated counterclockwise with the inner body 12 and descend.

When the shaft 131 rotates by a predetermined angle,
The gear 138 of the shaft 131 is disengaged from the gear 114 of the slide 111, and the cam 140 of the shaft 131 is moved to the recess 11 of the slide 111.
5 and lock the slide position of the slide body 111.

Therefore, a gap is provided below the holder 30 on which the selected CD is mounted so that the recording / reproducing unit 56 can enter.

The holder moved downward with respect to the position of the lever portion 36 of the holder 30 held by the selection member 98
As the lever part 36 of 30 moves counterclockwise downward, the separator on the holder 30 held by the selection member 98
The edge 41 of the lower separator 31 that has been moved down with respect to the position of the edge 41 of the 31 moves counterclockwise and downward. Then, the separator on the holder 30 held by the selection member 98
A part of the lifting plate 120 of the slide body 111 is located below the edge 41 of the 31.

Further, at the beginning of the forward rotation of the shaft 131, the cam shaft 154 rotates counterclockwise in the drawing, and the notch 155 is formed between the recesses 67 and 68 of the rib 66 of the rib 66 of the arm 61. Facing part 66a.

Subsequently, during the forward rotation of the shaft 131, the gear portion 141 of the shaft 131 meshes with the gear portion 65 of the arm 61, and the arm 61 rotates clockwise in FIG. Into the open gap. At this time, the notch 155 of the cam shaft 154 faces the rib 66a between the recesses 67 and 68 of the arm 61, so that the lock of the arm 61 is released and the rotation of the arm 61 is allowed.

When the holder 63 at the tip of the arm 61 reaches the center position of the magazine 1, that is, the center position of the CD, the gear portion 141 of the shaft 131 is disengaged from the gear portion 65 of the arm 61 and the cam shaft 154. Is engaged with the concave portion 68 of the arm 61 to lock the arm 61 at the reproduction position.

In the middle period of the forward rotation of the shaft 131,
The motor 125 is driven to rotate forward, the elevating plate 120 rises, and the upper surface of the elevating plate 120 is held by the holder 30 held by the selection member 98.
It abuts on the edge 41 of the upper separator 31 to regulate the downward movement.

Subsequently, in the latter half of the forward rotation of the shaft 131, the gear portion 144 of the cylindrical body 142 fitted to the shaft 131 meshes with the gear portion 102 of the selection member 98, and the selection member 98 is moved by the slide plate 94. Descending while rotating counterclockwise along the guide groove 96 of
The holder 30 holding the lever portion 36 by the holding frame 101 is lowered while rotating counterclockwise. At this time, since the notch 32 is formed in the holder 30, the holder 30 moves without contacting the arm 61.

Therefore, the CD mounted on the holder 30 is also lowered, and the hole h of the CD is fitted into the boss 73 of the clamp body 71 through the tapered portion 74 during the lowering.
The motor 136 is stopped at the position where the holder 30 has been further lowered and the holder 30 has been further lowered. At this time,
Since the upper separator 31 of the descending holder 30 is regulated by the elevating plate 120, the lower holder 30 and the upper separator 31 are separated from the CD.

The CD can be reproduced by clamping the CD with the clamp body 71, and the CD is rotated integrally with the clamp body 71 by driving the motor 70, and the laser pickup 69 moves on the arm 61 to record on the CD. The read / reproduced signal is read and reproduced.

Next, in order to return the magazine 1 to the standby state after the reproduction of the CD and to take out the magazine 1, first, after the clamping of the CD by the clamp body 71 is released, the motor 136 is driven to rotate in the reverse direction, and the shaft 131 is removed. The reverse rotation starts.

At the beginning of the reverse rotation of the shaft 131, the gear portion 144 of the cylinder 142 fitted to the shaft 131 and the gear portion 10 of the selection member 98.
Due to the engagement with 2, the selection member 98 rises while rotating clockwise along the guide groove 96 of the slide plate 94, and the holder 30 holding the lever portion 36 by the holding frame 101 of the selection member 98 moves rightward. It rises while rotating around.

Therefore, while the holder 30 is being lifted, the CD
Up from the boss 73 of the clamp body 71 to the hole h of the CD.
Is removed, and a CD is mounted on the holder 30 and rises together.

The gear portion 144 of the cylinder 142 is a selection member.
When disengaged from the gear portion 102 of the 98, the peripheral surface of the cylindrical body 142 comes into contact with the selection member 98, and the selection member 98 is held at the raised position.

Subsequently, in the middle stage of the reverse rotation of the shaft 131, the motor 125 is driven in the reverse direction, and the elevating plate 120 descends and retreats.

The gear part 141 of the shaft 131 is the gear part of the arm 61
The arm 61 rotates in the counterclockwise direction in the figure, and moves out of the opened gap of the magazine 1. At this time, the notch 155 of the cam shaft 154 faces the rib 66a between the recesses 67 and 68 of the arm 61, so that the lock of the arm 61 is released and the rotation of the arm 61 is allowed.

When the arm 61 reaches the initial standby position, the gear portion 141 of the shaft 131 is disengaged from the gear portion 65 of the arm 61, and the peripheral surface of the cam shaft 154 engages with the concave portion 67 of the arm 61. To lock the arm 61 at the standby position.

Subsequently, in the latter half of the reverse rotation of the shaft 131, the cam 140 of the shaft 131 is disengaged from the concave portion 115 of the slide 111, and the notch 139 faces so that the lock is released. The gear part 138 of the slide body 111 is the gear part 11 of the slide body 111
4 and the slide body 111 slides clockwise in the disk circumferential direction, and the protruding piece 116 of the slide body 111 pushes the lever 26 of the inner body 12 of the magazine 1 so that the inner body
The CD 12, holder 30 and the inner body 12, which have been at the lowered position, ascend upward while rotating clockwise integrally. Therefore, the gap opened in the magazine 1 is closed.

When the slide body 111 reaches the initial position, the reverse rotation drive of the motor 136 is stopped, and the apparatus returns to the initial standby state. In this standby state, the magazine 1 is pulled out from the changer device 2 and removed.

When the CD to be reproduced is changed, the arm 61 is returned to the standby position from the reproduction state and the magazine 1 is once returned to the standby state with the magazine 1 closed. The recording / reproducing unit 56 and the selection member 98 are mounted on a holder on which the next selected CD is mounted.
According to the height position of 30, the reproduction can be performed from the standby state to the reproduction state as described above.

As described above, a plurality of stacked CDs
Move any of the CDs in the disk stacking direction,
A gap is opened in front of the CD to be reproduced, and the recording / reproducing unit 56 is caused to enter the gap, whereby the CD is rotated by the recording / reproducing unit 56 at the position where a plurality of CDs are arranged one on top of another for reproduction. Thus, the changer device can be downsized.

Further, the outer body 11 and the inner body 12 can be rotated in the disk circumferential direction opposite to each other, and can be opened and closed by coming and going in the disk stacking direction with the rotation in the disk circumferential direction. A magazine 1 containing a plurality of holders 30 each holding a plurality of CDs so as to be movable in the disk stacking direction along with the rotation of the disk in the circumferential direction is used. By selectively locking the holder 30 holding the CD for recording / reproduction among the 30 and opening the inner body 12 with respect to the outer body 11 by the opening / closing unit 58, the holder 30 held by the selection unit 57 is lowered. The holder 30 on the side is lowered while rotating in the circumferential direction of the disc together with the inner body 12 by its own weight, and a space for recording and reproduction is provided below the holder 30 held by the selection unit 57. To open, the magazine 1
The mechanism for selecting the holder 30 holding the CD by opening and closing can be simplified and downsized, and the opening and closing operation of the magazine 1 and the selecting operation of the holder 30 can be reliably performed.

For this reason, when adopted as a six-unit CD changer for an automobile, for example, the changer device 2 can be incorporated in the central portion of the instrument panel.

It should be noted that the recording / reproducing disc includes a read-only,
Includes both recording and playback. Therefore, the recording / reproducing disk is not limited to a CD, but includes a video disk, a magneto-optical disk capable of recording / reproducing, a magnetic disk, and the like, and can be applied to a recording / reproducing apparatus for recording / reproducing the recording / reproducing disk.

In a recording / reproducing apparatus for recording / reproducing a magnetic disk, a recording / reproducing head for performing magnetic recording / reproducing on a magnetic disk is used as the recording / reproducing unit 56.

[0072]

According to the recording / reproducing apparatus for a recording / reproducing disk of the present invention, the outer body and the inner body are rotatable in mutually opposite circumferential directions of the disk, and the outer circumferential body and the inner body are rotated in the circumferential direction of the disk. Along with this, a plurality of holders respectively holding a plurality of recording / reproducing discs are moved in the disc laminating direction as the discs are rotated in the circumferential direction. Using a magazine that can be stored, a selection mechanism selectively locks a holder holding a recording / reproducing disc for performing recording / reproduction among the holders, and opens and closes an outer body and an inner body with an opening / closing mechanism, thereby providing a selection mechanism. The holder lower than the holder held in the step moves down while rotating in the circumferential direction of the disk by its own weight, and the recording is performed below the holder held by the selection mechanism. To open the space, to open and close the magazine can be simplified and miniaturized mechanism for selecting the holder holding the recording reproducing disc, reliably perform opening and closing operations and the holder selecting operation of the magazine for.

[Brief description of the drawings]

FIG. 1 is a perspective view of a part of a changer device showing an embodiment of a recording / reproducing apparatus for a recording / reproducing disk of the present invention in an exploded state.

FIG. 2 is a plan view of the changer device of the embodiment with a magazine mounted;

FIG. 3 is a cross-sectional view of the changer device of the embodiment with a magazine mounted.

FIG. 4 is a sectional view of a part of the changer device of the embodiment.

FIG. 5 is a sectional view of a part of the changer device of the embodiment.

FIG. 6 is a sectional view of a part of the changer device of the embodiment.

FIG. 7 is an exploded perspective view of the magazine of the embodiment.

FIG. 8 is a perspective view of the magazine of the embodiment in a closed state.

FIG. 9 is a perspective view of the magazine of the embodiment in an open state.

FIG. 10 is a partial cross-sectional view taken along the line AA of FIG. 2 of the embodiment.

FIG. 11 is a view on arrow B of FIG. 3 of the embodiment.

FIG. 12 is a view on arrow C in FIG. 3 of the embodiment.

[Explanation of symbols]

 1 Magazine 11 Outer body 12 Inner body 30 Holder 51 Case as recording / reproducing device main body 54 Magazine insertion part 57 Selection unit as selection mechanism 58 Opening / closing unit as opening / closing mechanism CD Compact disc as recording / playback disk

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B 25/04 101 G11B 17/26

Claims (1)

(57) [Claims] 1. An outer body and an inner body are rotatable in mutually opposing disc circumferential directions, and are allowed to open and close in the disc laminating direction with each other in accordance with the disc circumferential direction. A magazine which holds a plurality of recording / reproducing discs in a connected state, and which holds a plurality of recording / playback discs so as to be movable in a disc laminating direction along with a rotation in a disc circumferential direction, and which is detachable. A recording / reproducing apparatus main body having a magazine insertion portion, an opening / closing mechanism for rotating an inner body of the magazine inserted into the magazine insertion portion in a disk circumferential direction, and holding a recording / reproducing disk for performing recording / reproduction among the holders And a selection mechanism for selectively engaging and locking the holder.