JPH1021622A - Information apparatus of recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To precisely stop a holder to the reproducing position. SOLUTION: A cam gear 30 transfers a rotating force of a motor 20 to a rack to the reproducing position from the waiting position. When the rack moves to the reproducing position from the waiting position, a play sensor 82 as a photodetection sensor detects the linear part 31C of the cam gear 30 to turn on. Namely, when a play sensor 82 detects the reproducing position, a motor 20 immediately stops depending on the ON signal of the play sensor 82. Therefore, since the holder (rack 14) is immediately stopped depending on the play sensor 82 which results in less amount of fluctuation in comparison with a mechanical switch, the holder may be accurately stopped at the reproducing position.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information device for loading or unloading, for example, a mini-disc (hereinafter referred to as "MD") as a recording medium.

2. Description of the Related Art In an MD information device, an MD is loaded to perform reproduction or recording processing, and the MD is unloaded and ejected. FIG. 31 shows a conventional example of this information device. As shown in FIG.
The left (in the direction of arrow L) rack plate 200 is formed with a pair of longitudinally symmetrical holder grooves 202 and 204 and one lever pin groove 206. These grooves 202-2
Reference numeral 06 denotes a stepped shape, and the lever pin groove 206 is formed at a position rearward (in the direction of the arrow BK) of the holder groove 204. The left rack plate 201 (in the direction of arrow R) shown in FIG.
Only the lever pin groove 206 is not formed. Holder 2 for storing and moving MD
A pin 210 protrudes from the side face of the
Rack plate 200 in which 10 are arranged on the left and right of holder 208
(Only the left side is shown in FIG. 31).
04. The holder 208 is the rack plate 2
00 are moved along the holder grooves 202 and 204.
As shown in FIG. 32, the lower plate 20 on the left rear side of the holder 208
8A, a lever 212 is rotatably mounted, and a lever pin 214 disposed at one end of the lever 212 so as to be able to advance and retreat projects outward from a notch 208B of the holder 208, and the lever pin 214 is inserted into a lever pin groove 206 of the rack plate 200. Has been inserted. Lower plate 208 of holder 208
A lever stopper 206 for restricting the rotation of the lever 212 projects from the rear end of A. One end of a spring 218 is hooked on the other end of the lever 212, and the spring 218 is
Is hooked on the rear plate 208C of the holder 208. For this reason, the lever 212 is urged counterclockwise by the spring 218, and the rotation is always restricted by the lever 212 hitting the lever stopper 206. As shown in FIG. 31, a gear 220 is attached to the back surface of the lower plate 208A.
0 rack 207. Then, the rotation driving force of the motor (not shown) is transmitted to the gear 220, so that the holder 208 is moved by the rack plate 200. As shown in FIG. 33, a head 224 is suspended from the support portion 222A of the cabinet 222, and a bent portion 226 is formed on the rear side of the head 224 so as to face downward. The head 224 is urged clockwise (hereinafter referred to as “CW” in the drawings) by a spring 228 so as not to interfere with the holder 208 to be loaded. The operation from the standby state to the play state and the Rec state will be described with reference to FIGS. FIG.
4 indicates a standby state. The standby state is the same as the eject state. At this time, the pin 210 of the holder 208 is at the A position of the holder grooves 202 and 204 of the rack plate 200 (see FIG. 31), and the lever pin 214 is at the a position of the lever groove 206 (see FIG. 31). 31). In the state of FIG. 34, the pin 210 of the holder 208 is moved along the holder grooves 202 and 204 and is at the position A, but the movement of the lever pin 214 is stopped at the position a, and the rotation axis of the lever 212 is It is moving forward with the holder 208. Therefore, the lever 212 is rotated against the urging force of the spring 218 (see FIG. 32), and is in a state where the rear side of the MD is pushed out. Therefore, at the time of ejection, the MD protrudes.
It is easy to take out. MD to holder 208
, The holder 208 is retracted by the rack 207, and the holder 208 moves from the state of FIG. 34 to the state of FIG. During this movement, the lever 212 is turned counterclockwise by the urging force of the spring 218 (hereinafter, “CCW” in the drawing).
), And the lever 212 is moved to the lever stopper 20.
At 6 the rotation stops. Although not shown, in the state shown in FIG. 35, the concave portion formed on the side surface of the MD is locked by the holder 208, and the MD is integrally moved by the holder 208. In addition, a loading switch (not shown) is turned on at the position shown in FIG. 35, and thereafter, the holder 208 is retracted by the motor. By the rotation of the gear 220, the holder 208 is moved by the rack plate 200 and retreats.
As shown in FIG. 6, when the pin 206 and the lever pin 214 of the holder 208 come to the B position (see FIG. 31) of the holder grooves 202 and 204 and the lever pin groove 206, respectively, the play state is set. Rack plate 2 from the play state of FIG.
When the holder 208 is further retracted by the “00”, the rear side of the holder 208 pushes the bent portion 226 of the head 224 as shown in FIG. As a result, the head 224 rotates counterclockwise against the urging force of the spring 228, and the pin 206 and the lever pin 214 of the holder 208 are respectively connected to the holder grooves 202 and 204 and the C of the lever pin groove 206 in the state of FIG.
When it reaches the position (see FIG. 31), the movement of the holder 208 is stopped, and the state is changed to the Rec state. Here, the standby state (eject state), the play state, and the Rec state correspond to the rack plate 2
The detection is performed by a detection switch (for example, a contact type mechanical switch such as a limit switch) disposed at a position corresponding to each of the A to C positions of 00.

By the way, the standby state,
The play state and the Rec state are detected by a detection switch (mechanical switch). However, in this mechanical switch, the movement of the movable element tends to vary, and for example, the detection of the play state may be delayed. Conceivable. In this case, the holder 208 is stopped at a position retracted from the specified reproduction position (the position B in FIG. 31), and the head 224 starts to lower. Therefore, the recorded data may be rewritten (note that the output of the laser is different between the reproduction and the recording and cannot be performed normally, but it is necessary to prepare for an emergency).
Therefore, high accuracy is required as to whether or not the holder 208 is stopped at the reproduction position. In view of the above, an object of the present invention is to provide a recording medium information device that accurately stops a holder at a reproduction position.

According to a first aspect of the present invention, there is provided an information apparatus for a recording medium, comprising: a holder for accommodating the recording medium;
A rack that engages with the holder and transfers the holder, a drive source that drives the rack, and a detection unit that detects that the rack is located at a reproduction position; , A reproducing member disposed at a position facing the recording medium after the transfer of the holder, and a recording member disposed at a position facing the recording medium after the transfer of the holder so as to be able to move up and down. And a light detection sensor that detects a detection unit of the gear mechanism, and immediately stops the holder when the light detection sensor detects that the rack is located at the reproduction position based on the detection unit. It is characterized by the following. An information device for a recording medium according to claim 2 of the present invention, wherein the first detecting unit detects that the rack is located at a standby position, and the second detecting unit detects that the rack is located at a reproducing position. And a third detection unit for detecting that the recording member is located at a recording position, and a first detection unit for detecting that the rack is in a standby state based on the first detection unit. A light detection sensor, a second light detection sensor for detecting that the rack is in the reproduction state based on the second detection unit, and a rack in the recording state based on the third detection unit And a third light detection sensor for detecting the above. An information device for a recording medium according to claim 3 of the present invention, wherein a locking portion is formed on the apparatus main body, and a first engagement portion and a second engagement portion are formed on the detection portion,
When the rack is at the standby position, the first engaging portion is locked by the locking portion, and when the rack is at the recording position, the second engaging portion is locked by the locking portion. It is characterized by being performed.

DETAILED DESCRIPTION OF THE INVENTION FIG.
Cartridge).
MD information device (hereinafter, referred to as a device inserted into the
FIG. 3 is a perspective view showing a main part of S (hereinafter simply referred to as “player”).
FIG. 2 is an exploded perspective view thereof. In addition, each drawing below
The middle arrow F is the front side, the arrow BK is the rear side, the arrow R is the right side, the arrow
L indicates the left side. As shown in FIG. 1 and FIG.
The recording medium is placed on the upper surface of the cabinet 10 which constitutes a part of
A frame-shaped e to accommodate MD as a body
A rudder 12 is provided. As shown in FIGS. 2 and 3,
The holder 12 has four engaging pins 12A and 12B protruding therefrom.
The engagement pins 12A and 12B are connected to the rack 1
Engage with the racks 4 and 16 and move the racks 14 and 16 in the front-back direction
By doing so, the holder 12 moves. And FIG.
As shown in FIG.
A top plate 18 is disposed, and the top plate 18 is
It is fixed to the cabinet 10. That is, the holder 12
Is located between the top plate 18 and the cabinet 10.
You. (Description of Configuration of Transfer Mechanism of Holder 12)
1 to 7, the configuration of the transfer mechanism of the holder 12 will be described.
Will be described. As shown in FIG. 1, FIG. 6, and FIG.
A motor 20 as a driving means is attached to the cabinet 10
The motor pulley 22 of the motor 20 and the pulley
A belt 26 is wound around the belt 24. And mo
The rotation of the motor pulley 22 is controlled by the pulley 24 via the belt 26.
Is transmitted to As shown in FIG.
Is formed continuously with a small-diameter gear 24A.
A relay gear 28 is disposed on the left side of the gear 24A.
This relay gear 28 meshes with the small-diameter gear 24A on its upper side.
Large diameter gear 28A and small diameter gear 28B integrated below
Is formed. And this small diameter gear 28B is
A gear formed on the outer peripheral surface of the cam gear 30 as a driving means
And 30A. As shown in FIG.
The gear 30A of the gear 30 is always the small-diameter gear 28 of the relay gear 28.
B, so the rotation of the pulley 24 is relayed
The power is transmitted to the cam gear 30 via the gear 28. Below
The configuration of the cam gear 30 will be described with reference to FIGS.
8 is a plan view of the cam gear 30, FIG.
10 is a sectional view taken along line 10-10 of FIG. Shown in FIG.
As described above, a small-diameter gear 30B is formed above the cam gear 30.
The small-diameter gear 30B has a predetermined angular range θ1.
(In the present embodiment, 228 °)
Missing gear. Also, a predetermined diameter is set for the small-diameter gear 30B.
Intermittent portions over the angular range θ2 (132 ° in the present embodiment)
30B 'are formed. And the small diameter gear 30B
Meshing with pinion 32, driving pinion 32 intermittently
Between the playback state and the Rec state and between the Rec state
Is because the pinion 32 is located at the intermittent portion 30B '.
The rotation of the motor 20 on the pinion 32 (rack 14, 16)
Force is not transmitted. Therefore, the intermittent part
While the gear 30B 'corresponds to the gear 14A, the motor
Even if the cam gear 30 is rotated by the rack 20, the racks 14, 16
(Holder 12) does not move. 8 and FIG.
As shown in FIG.
An engagement pin 30C protrudes from the axis of 30B. This
As shown in FIG. 14, the engagement pin 30C of
Operating plate of sound head (hereinafter simply referred to as “head”) 64
74 can be engaged. And the engagement pin 30C
Presses the operation plate 74 (see FIGS. 24 and 25).
As a result, the head 64 moves down from the play state shown in FIG.
The recording mode is as shown in FIG. 9 and FIG.
As shown in FIG.
A protruding cam wall 30D and a younger end from both ends of the cam wall 30D.
It is formed toward the outer peripheral side of the cam gear 30 while swelling.
The formed cam wall 30E is formed in an annular shape. Cam wall 3
A stopper 29 (described later with reference to FIG.
The reference pin 29A always comes into contact with the
Control the rotational position. As shown in FIG.
E has a cam portion 30F projecting further downward.
And 30G are formed. The cam part 30G is the cam part 3
0F, these cam portions 30G
The wall 31A of the cam gear 30F and the wall 31A of the cam gear 30F
To determine whether or not is located in the recording mode position
is there. A wall portion 31B is formed on the cam portion 30G.
ing. This wall portion 31B is at the initial position as described later.
The cam gear 30 is rotated and loading starts.
This is a part for determining whether or not the game has been performed. Further, the cam wall 30E
Is formed with a wall portion 31C. This wall 31C
Is set at the position where the cam gear 30 is in the play state as described later.
It is a part for determining whether or not it is located. FIG. 7 and FIG.
As shown in FIG. 20, the walls 31B and 31C are
Abuts a stopper (not shown) formed on the
Thus, the rotation of the cam gear 30 is stopped. Shown in FIG.
So that the stopper 29 can rotate to the left of the cam gear 30
The lower end of the stopper 29 has an engaging pin 2
9A are formed. This engagement pin 29A is a cam gear
30 abuts (engages) with the cam walls 30D and 30E of the
The hopper 29 rotates while being restricted by the cam walls 30D and 30E.
You. An engagement projection 29B is engaged with the upper end of the stopper 29.
Projecting from the mating pin 29A at a predetermined angle.
Of the cabinet 10 corresponding to the engagement projection 29B.
A long hole 10D is formed at the site (see FIG. 2). So
Then, the engagement projection 29B can be projected from the elongated hole 10D.
The engagement pin 29A shown in FIG.
(The play state shown in FIG. 20 and the play state shown in FIG. 24)
In the case of the Rec state shown in FIG.
Engagement recess 15F of the rack 14 which projects from
(See FIG. 7). That is,
In the embodiment, in the play state and the Rec state,
20 and FIG.
24 can be reliably stopped at the stop position.
Further, a coil spring (not shown) is provided on the stopper 29.
The stopper 29 is always operated by this coil spring.
Energized counterclockwise (in FIG. 7, in the direction of arrow CCW)
The pin 29A is pressed against the cam walls 30E and 30D.
The cam gear 30 rotates clockwise, and the rack 14 is pressed.
Eject from the position in the a state (the position shown by the imaginary line in FIG. 7)
When it moves to the position in the default state (the position indicated by the solid line in FIG. 7),
The engagement pin 29A moves from the cam wall 30E to 30D.
Therefore, the stop force is generated by the urging force of the coil spring (not shown).
7 rotates clockwise to the position indicated by the solid line in FIG.
And the engaging protrusion 29B is engaged with the engaging concave portion of the rack 14.
15F, the rack 14 can move forward,
Loading becomes possible. As shown in FIG.
The gear 32 and the small diameter gear 30B of the cam gear 30 and the rack 14
And a gear portion 14 of a rack 14 described later.
B is engaged. Hereinafter, the configurations of the racks 14 and 16 will be described.
explain. As shown in FIG. 1 and FIG.
6 is a rail formed on both left and right sides of the cabinet 10
10A, 10B (see FIG. 4),
It is slidable forward and backward along 10B.
The right rack 16 is a gear portion 14A of the left rack 14.
Except that the engaging recess 15F is not formed.
It has a shape. Therefore, the description of the right rack 16
Is omitted. The symmetric racks 12 and 14 are shown in FIG.
1 are connected by a connecting member 37 shown in FIG.
When the rack 12 is driven by the pinion 32,
14 moves integrally. 11 to 13 are on the left side.
FIG. 11 shows the configuration of the rack 14 shown in FIG.
FIG. 12 is a sectional view taken along line 12-12 of FIG. 11, and FIG.
FIG. 13 is a sectional view taken along line 13-13 of FIG. 11. As shown in FIG.
Thus, the rack 14 has a substantially rectangular side surface, and
A gear part 14A is formed along the front and rear direction on the lower side.
I have. The gear portion 14A is, as shown in FIG.
, And the pinion 32 engages, and the pinion 32 rotates.
This causes the rack 14 to move in the front-rear direction. further,
The rack 14 has two rails 15A and 15C vertically
They are formed in parallel. The rails 15A and 15C are
Are along the front-back direction. Rail 15A is
A plurality formed in the cabinet 10 shown in FIGS. 2 and 5
(Four in the present embodiment) are engaged with the projections 10C,
14 is restricted from moving up and down (moving upwards).
You. The protrusions 10C are arranged at predetermined intervals in the front-rear direction.
Are formed at the same height. As shown in FIG.
And the rail 15C engages with the engagement pin 12B of the holder 12.
Then, the lifting and lowering of the rear part of the holder 12 is controlled. As shown in FIG.
Thus, the rail 15C is parallel to the rail 15A.
And an L-shaped straight portion 15E along the vertical direction at the rear.
Are formed. Then, the engagement pin 12B is
By sliding 5E, the rear part of the holder 12 moves up and down.
You. Further, as shown in FIGS.
The rails 1A are formed on the rails 15A.
An engagement recess 15F is formed substantially at the center of 5A. this
The engagement recess 15F has a substantially arc shape (see FIG. 12).
Locking the engaging portion 29B of the stopper 29 shown in FIG.
The movement of the rack 14 is prohibited by the
Controlled. As shown in FIG.
At the approximate center and rear side of the rear direction, a long hole 3 along the vertical direction
6A and 36B are formed. Then, as shown in FIG.
As shown, the cabinet 10 and the top plate 18 formed
The engagement pins 12A and 12B of the holder 12 are
Are engaged and guided, and the engagement pins 12A and 12B
Moving down along 6A and 36B, the holder 12
Lowers (see FIG. 20). At the time of unloading
Then, contrary to the above, the engagement pins 12A of the holder 12 and
12B rises along the slots 36A and 36B,
12 rises. (Description of Configuration Regarding Holder 12)
The related configuration will be described. As shown in FIGS. 2 and 3
In addition, the holder 12 has an engagement pin
12A and 12B protrude. In addition, the holder 12
On the left side of the upper surface, a substantially letter-shaped discharge lever 38 is connected to the support shaft 38A.
It is rotatably supported at the center. Right of the ejection lever 38
An engagement pin 40 protrudes from the lower surface of the end.
An arc-shaped long hole 1 is provided at a portion of the holder 12 corresponding to the pin 40.
2C is formed. Then, the engagement pin 40 is
Facing MD inserted into 2C and stored in holder 12
It has become. Engage with the upper surface of the left end of the ejection lever 38
An engagement pin 42 as a part is protrudingly provided.
An operation lever 44, which will be described later, is pivotally supported by the top plate 18.
Can be engaged with a rib 46 as a portion to be engaged.
A stopper 18B projects downward from the top plate 18.
Engages when the ejection lever 38 rotates counterclockwise.
The pin 42 comes into contact with the stopper 18B and the ejection lever 3
8 is suppressed (see FIG. 3). Figure
As shown in FIG. 2, an MD shutter MDS is provided in the holder 12.
Engages with a recess (not shown) provided in the shutter MD.
Engagement part 1 that slides S to open window MDW of MD
2D is formed. FIG.
To fit in the recess, and position the MD in the holder 12.
Conventionally known positioning lever (not shown) is rotatable
Are located. Also, as shown in FIGS.
The window 12 of the MD stored in the holder 12
3), an opening 58 is formed at the corresponding position.
Through this opening 58, a head 64, which will be described later,
Disk D (see FIG. 2).
You. Further, a spring 52 is provided at the front end of the holder 12.
The front end is hooked. The rear end of this spring 52
Is hooked on the cut-and-raised piece 54A formed on the lever 54.
The lever 54 slides in the front-rear direction. Top board
The engagement piece 56 is bent at 18, and from the standby state
When shifting to the eject state, the engaging piece 56
The piece 54A engages. As shown in FIG. 2 and FIG.
An operation lever 44 is turned around a support shaft 44A at the front of
It is pivotally supported. Also, the rear right of the operation lever 44
One end of the spring 60 is hooked on the
The other end of the ring 60 is hooked on the hook 18A of the top plate 18.
Have been. The operation lever 44 is biased by the spring 60
It is always biased clockwise (CW direction in FIG. 3).
You. A portion of the top plate 18 corresponding to the right side surface of the operation lever 44
To limit the clockwise rotation of the operating lever 44
The stopper 62 is formed.
The operating lever 44 is turned clockwise from the position shown in FIG.
Positioned without rolling. Further, the back surface of the operation lever 44
Is provided with a rib 46, and a discharge level is
The engagement pin 40 of the bar 38 is engaged. The rib 46 is a lever
Abuts on the engagement pin 42 of the
Is what you do. As shown in FIGS.
Straight section along the MD transport direction (front-rear direction)
46A are formed and have wall surfaces 47A and 47B.
You. The rib 46 is continuous with the straight portion 46A and goes to the right.
A tapered portion 46B is formed, and a wall surface 47C,
47D. Rib 46 of operation lever 44 and discharge lever
About the engagement state of the engagement pin 42 with the engagement pin 42,
As described in detail in the description, as shown in FIG.
In some cases, the force F1 'of the engaging pin 42 pressing the wall surface 47C
The operating lever 44 in the counterclockwise direction.
Is able to retreat. Also shown in FIG.
Thus, at the time of unloading, the wall 47D is pressed.
The forces F3 and F3 'of the engaging pins 42
A tapered portion 46B is formed so as to face the axis 44A.
Therefore, even if the engagement pin 42 presses the wall surface 47D, the operation lever
No rotation force acts on the operation lever 44, and the operation lever 44
Do not turn. Therefore, the engagement pin 42 is moved to the wall surface 47 of the rib 46.
The ejection lever 38 is caused by the reaction force F2 of the force F3 pressing D.
Rotate clockwise to push MD forward and eject
You. (Description of Configuration of Head 64 and Pickup 66) FIG.
Based on the configuration of the head 64 and the pickup 66.
The configuration will be described. Head 64 and pickup 66
Is connected to the base 67, and the base 67 is
It is arranged on the chassis 68. The base 67 is shown in FIG.
It is moved in the left-right direction by the feed motor 98 shown. Ma
In addition, as shown in FIGS. 2 and 14, the head 64
64A, and rotates about this support shaft 64A.
(Lift). Therefore, the head 64 moves the disk in the MD.
It faces or separates the disc D (see FIGS. 14 and 25).
As shown in FIG. 2 and FIG.
A control lever 70 is mounted via a support shaft 72,
The control lever 70 contacts the head 64 and the MD
Forming an Abutting Part 70A Abutting on the Upper Surface of the Right and Left Sides
Have been. Then, as shown in FIG.
When 70 rotates clockwise, the head 64 is attached to the engaging portion 74A.
Is pushed up, the head 64 is raised, and the control shown in FIG.
When the lever 70 rotates counterclockwise, the head 64 moves down.
I do. As shown in FIG. 6 and FIG.
A contact piece 70B is formed substantially at the center of the rear side.
The contact piece 70B is engaged with an extended portion 74A of an operation plate 74 described later.
I do. As shown in FIG. 14, on the rear side of the control lever 70,
An operation plate 74 is supported by a support shaft 76.
The rotation of 4 causes the anti-control lever 70 to rotate.
The operating plate 74 is always moved counterclockwise by the spring 75.
The operating plate 74 is biased by the biasing force of the spring 75.
The extension 74A pushes the contact piece 70B clockwise to control the control.
The head 70 is raised by urging the bar 70 clockwise.
You. Therefore, the head 64 always moves counterclockwise due to its own weight.
The head 64 does not collide with the holder 12
No. As shown in FIG. 6 and FIG.
At the position corresponding to the contact piece 70B of the lever 70, upward
An extended portion 74A is formed. FIG.
As shown in FIG. 4, the engagement of the cam gear 30
An engaging portion extending downward at a portion corresponding to the pin 31C
74B are formed. From the play state shown in FIG.
The cam gear 30 rotates in the counterclockwise direction to rotate Re
When shifting to the state c, the engagement pin 31C is
Is engaged (contacts) with the engaging portion 74B of the
Counterclockwise, and as shown in FIG.
It rotates clockwise against the urging force of the spring 75. That
Since the extended portion 74A is separated from the contact piece 70B,
Lever 70 rotates counterclockwise due to the weight of head 64
Then, the head 64 faces the disk D. On the other hand, Rec
When shifting from the state to the play state, the cam gear 30
Rotate clockwise to separate the engagement pin 31C from the engagement portion 74B
Then, as shown in FIG.
When the control lever 70 rotates counterclockwise by the biasing force,
Rotate in the measuring direction. Therefore, the head 64 is
Disc D), and from the Rec state shown in FIG. 25 to FIG.
The play state shown in FIG. As shown in Figure 2, pick
The up 66 is provided with an objective lens 76. Ma
A turntable 78 is attached to the mechanical chassis 68.
The turntable 78 is described later with reference to FIG.
The rotation is driven by a spindle motor 90. Soshi
In loading, the holder 12 containing the MD
Is lowered, the disk D in the MD turns the turntable 7
8. (Explanation of the method of detecting each mode by the position detecting member) FIG.
As shown in FIG.
Loading position detecting member 80 for detecting start,
Playback position for detecting whether or not the player 30 is in the play state.
Position detection member 82 and cam gear 30 are in the Rec state.
Rec position detecting member 84 for detecting whether to perform
Have been. The position detecting members 80 and 84 are limit switches.
Contact type mechanical switch such as a switch.
82 is a light detection sensor. Loading position detection member
Reference numeral 80 denotes a standby state of the not-shown operator (shown in FIG. 7).
(State), which corresponds to the wall 31B of the cam gear 30.
The operator is disposed near the pinion 32,
It is turned on by being pressed by 1B. Then, from standby state,
When the gear 30 starts to rotate counterclockwise,
The operating element of the switching position detecting member 80 is separated from the wall 31B and turned off.
And it is detected that the loading has started. FIG.
As shown in the figure, the playback position detecting member (hereinafter simply referred to as “play
82) is disposed near the relay gear 28.
To the cam walls 30D to 30G (see FIGS. 9 and 10).
A groove (not shown) that does not interfere is formed. Step
The ray sensor 82 includes a light emitting element and a light receiving element (not shown).
When the wall 31C is located at the play sensor 82
Turns off. That is, the cam gear 30 is turned counterclockwise from the standby state.
The cam gear 30 is rotated in the play direction (shown in FIG. 20).
When it is rotated to the position
Light is blocked by the wall 31C and reaches the light receiving element.
The play sensor 82 is turned off, and
Then, it is detected that the play state has been reached. Rec position detection
The projecting member 84 is arranged near the engaging projection 29B of the stopper 29.
Operation (not shown) of the Rec position detecting member 84
When the child is pressed against the wall 31C, it turns on. And
The cam gear 30 rotates counterclockwise from the lay state,
Up to the position where the gear 30 is in the Rec state (the state shown in FIG. 24)
When rotated, the operator of the Rec position detecting member 84 is
1C, the Rec position detection member 84 is turned on,
Rec state is detected. That is, the waiting state shown in FIG.
Operation of the loading position detecting member 80 in the machine state
The child is pressed by the wall 31C of the arrow A shown in FIG.
Becomes Loading starts and cam gear 30 is in reverse
When the loading position detecting member 80 rotates in the measuring direction,
Off, and the system controller 110 described later
To determine that loading has started. Of the cam gear 30
The wall 31C is located at the position of the play sensor 82, that is, as shown in FIG.
When rotated to the position of arrow C, the play sensor 82 is turned off.
Becomes Then, the system controller 110
It is determined that it is in the a state, and the reproduction process is performed. Cam gear
30 is located at the position of the Rec position detecting member 84,
When rotated to the position of arrow B shown in FIG.
The detection member 84 turns on. And system control
The controller 110 determines that it is in the Rec state, and performs the recording process.
Work. A cam formed on the cabinet 10
Grooves into which the cam walls 30D to 30G of the gear 30 are inserted (FIG.
(Not shown) indicates that the cam gear 30 has rotated to the Rec state.
When the cam gear 30 comes into contact with the wall 31C,
Clockwise rotation is prohibited, and the cam gear 30 is in the standby state.
When the cam gear 3 is rotated to the
One to prohibit further clockwise rotation of zero
Is formed. Therefore, the standby state and Rec
The condition is that the accuracy of the position detecting member of the cam gear 30 is not so good.
Even if not, the position is determined mechanically. Meanwhile, play letters
The state is mechanically between the standby state and the Rec state.
It is difficult to stop. Also, when playing,
If the cam gear 30 is not stopped, for example,
Playback starts on transition to Rec state due to over-rotation
And rewrite the data with the bias of the head 64
And so on. Therefore, this play state detection
The output member is constituted by an expensive optical sensor. In addition, play
In addition to the sensor 82, the loading position detecting member 80 or
If the Rec position detecting member 84 is an optical sensor, more accurate
The position of the cam gear 30 can be determined. (Explanation of Control System of Player S) FIG.
4 shows an example of a control system of the layer S. In the figure, 90 is
Spindle motor (hereinafter simply referred to as “motor”)
The spindle motor 90 is a turntable shown in FIG.
78 is driven to rotate. EFM modulated digital playback signal
Tmax, that is, the time length of the maximum inversion interval is always measured
And always rotate the MD disc D with a constant linear velocity.
Thus, the rotation of the motor 90 is controlled. Non-contact
The output from the pickup 66 is amplified by the RF amplifier 94
After that, the focus error signal is supplied to the servo circuit 96.
Signal and tracking error signal are formed.
It is. Then, each servo signal is supplied to the pickup 6
6. Pickup feed motor 98 and motor 90
Supplied to The main signal output from the RF amplifier 94 is
Supplied to the signal processing system 100 as it is
After the processing, the digital audio signal is
It is supplied to an inverter 102. And this digital audio
The audio signal is analyzed by the D / A converter 102.
Converted to log audio signal and supplied to output terminal 104
Is done. Also, the analog audio is input from the input terminal 106.
When input from the signal, the A / D converter 108
The digital audio signal is converted by the signal processing system 10
0 is supplied. Thereafter, a recording signal is supplied to the head 64.
And recorded on the MD disc D. 110 is the system
System controller, and this system controller 11
0 indicates that the player operates the input key 112
This causes S to perform a predetermined operation. That is, the system
The controller 110 is operated based on an operation signal of the input key 112.
Operation of the signal processing system 100 and the servo circuit 98
Controlling. The input keys 112 include a play key, Re
c key, stopper key, eject key, etc.
I have. Also, the system controller 110
The recording position detecting member 80, the play sensor 82, and the recording detection
Outgoing members 84 are connected to these position detecting members 8.
0 to 84 are input to the system controller 110.
Is forced. Based on these detection signals, the signal processing system 10
0 and the like are controlled. The system controller 110
Is the cumulative playback time and playback read from the subcode.
A program number or the like is displayed on the display unit 114. Next
In the standby state in the player S according to the present embodiment,
Loading operation, play state, Rec state, MD
Explanation of unloading operation and eject status
I do. (Explanation of standby state) FIG. 1 and FIGS.
Is shown. That is, as shown in FIG.
5 is engaged with the rear end of the rack 14 and FIG.
As shown in FIG.
36 at the forefront end. That is, FIGS. 1, 3, and
As shown in FIG. 5, the holder 12
Standby state that protrudes from the net 10 and waits for MD insertion
State. In the standby state, the top plate 18 is engaged.
The piece 56 and the cut-and-raised piece 54A are engaged with each other to
When the holder 12 is in the advanced position against the urging force,
The engagement between the ON 32 and the rack 14 causes the holder 12
Is held at the position shown in FIG. FIG.
The operating plate 74 is urged clockwise by the urging force of the spring 75.
And the position where the control lever 70 is rotated clockwise.
And the head 64 is raised (see FIGS. 1 and 6).
See). In the standby state, as shown in FIG.
The operating member (not shown) of the sensing position detecting member 80 is a cam gear.
Are pressed by the 30 wall portion 31B and turned on.
Therefore, the system controller 110 shown in FIG.
It is determined that it is in the standby state. (Loading operation that shifts from the standby state to the play state
And description of play state) In the standby state, when the user
D is inserted into the holder 12 from the state of the imaginary line in FIG.
In the state shown by the solid line, as shown in FIG.
8 engagement pin 40 is pressed by MD and rotates counterclockwise
At the position where the engagement pin 42 contacts the stopper 18B.
Rolling stops. When inserting the MD into the holder 12,
At the same time, the MD shutter MDS engages with the engagement portion 12D and stops.
The MD moves backward with respect to the holder 12
Thus, the window MDW is opened and is maintained in this state. So
Then, the user presses the input key (EJECT / L
OADING key, play key, Rec key, etc.) 11
2 is operated, the motor 20 is switched from the standby state shown in FIG.
The cam gear 30 rotates counterclockwise (in the direction of the arrow CCW).
Rotates clockwise. Then, the racks 14 and 16 are behind
By retreating, the holder 12 slides as shown in FIG.
It retracts due to the biasing force of the pulling 52. At this time,
The pin 12B is located at the upper end of the straight portion 15E of the racks 14, 16.
When the racks 14 and 16 are retracted, the holder
12 moves with the racks 14 and 16. Note that the input key
-Even if the (play key etc.) 112 is not operated, the holder
The racks 14 and 1 are pushed by a predetermined distance.
6 retracts and rotates the cam gear 30, the loading
The position detection member 80 is turned off from on. This off
By the command from the system controller 110
The motor 20 rotates, and the holder 1
2 retreats. The cam gear 30 rotates clockwise to
17 are further retracted from the state of FIG.
When the state shown in FIG.
It slides along the rib 46 of the operating lever 44. for that reason,
Counterclockwise until the discharge lever 38 contacts the rear end of the slot 12C.
Rotate in the measuring direction. That is, as shown in FIG.
Is along the wall surface 47C of the tapered portion 46B of the rib 46.
When it is slid, the operating pin is retracted by the
The bar 44 is subjected to a counterclockwise rotating force.
Of the force by which the ring 60 urges the operating lever 44 clockwise.
Is stronger, so that the engagement pin 42 faces the wall surface 47C.
When the ejection lever 38 reacts due to the Y-direction component of the reaction force F1
Rotate in the measuring direction. In addition, the ejection lever 38 rotates to
When reaching the rear end of the hole 12C, the ejection lever 38
Since it cannot be rotated, the resultant force F ′ of the engagement pin 42 is generated in the Z direction.
The wall 47C is pressed by the minute, and the operation lever 44 is
Counterclockwise around support shaft 44A against the urging force of ring 60
Rotate in the direction. In the play state, as shown in FIG.
Is that the engaging pin 12A of the holder 12 is a long hole of the rail portion 36.
36A and the engaging pin 12B is
6 located in the long hole 36B. Therefore, FIGS. 21 and 2
As shown in FIG. 2, the holder 12 is lowered and the mechanical chassis 6 is lowered.
8 and the turntable shown in FIG.
An MD disk D is placed on 78. At this time, the cam
The gear 30 is in the state shown in FIG. 24, and the pinion 32 is
Cam gear 3 to face the intermittent portion 30B '
Pinion 32 rotates even if 0 rotates further clockwise
Therefore, the rotation is not transmitted to the rack 14. One
In other words, the play state, the Rec state, and
The hook 14 can be slid forward and backward. Only
The cam gear 30 further rotates clockwise to stop
When the engagement pin 29A of the No. 29 engages with the cam portion 30E, the slide
The topper 29 has a clock against the urging force of the urging means (not shown).
Rotate in the direction. Therefore, the engaging protrusion 29B is
4 and the rack 14 (16) is moved
Restrict movement. Therefore, according to the present embodiment, the engagement pin
Since the rack 14 is held down by 29A,
In the play state.
In addition, the play state can be reliably maintained. In addition,
As shown in FIGS. 14 and 21, in the play state, the cam
The engagement pin 30C of the gear 30 is engaged with the engagement portion 74B of the operation plate 74.
And are separated. In the play state, the wall portion 31C is
It is located at the play sensor 82 and the play sensor 82 is turned off.
You. Therefore, the system controller 11 shown in FIG.
0 is determined to be in the play state, and the subsequent reproduction process
Command. That is, according to the present embodiment, the play center
As the sensor 82 is an optical sensor,
Position can be detected instantaneously, and the motor 20 can be reliably
Can be stopped. Note that the playback operation is performed as shown in FIG.
A feed motor 98 shown in FIG.
By moving from the inner circumference to the outer circumference
U. (Operation for transition from play state to Rec state and Rec
Description of State) From the play state shown in FIG.
Rotates further counterclockwise, and the cam gear 30 rotates clockwise.
When rotated, the engagement pin 30C is moved to the engagement portion 74 of the operation plate 74.
B and the operating plate 74 is rotated clockwise. That
Therefore, the extension 74A separates from the contact piece 70B, and the control lever
-70 rotates counterclockwise by the weight of the head 64
You. Therefore, the imaginary line in FIG. 22 and the solid line in FIG.
As described above, the head 64 faces the disk D, and the recording process is performed.
State. Also, after the play state shown in FIG.
The engagement pin 29A of the stopper 29 shown in FIG.
30 is engaged with the cam portion 31E of the
A fits into the engagement recess 15F of the rack 14
The movement of (16) is restricted. Therefore, in this embodiment,
According to the description, the racks 14 and 16 are inadvertently moved in the Rec state.
And the Rec state can be maintained reliably.
Wear. As described above, between the reproduction state and the Rec state, and R
In the ec state, the intermittent portion 30B 'of the cam gear 30 is a pinion.
32, the motor 20 rotates counterclockwise.
Even if it rotates, the pinion 32 does not rotate. That is, this embodiment
According to the state, the head 64 between the reproduction state and the Rec state.
The racks 14 and 16 are moved in the operation of raising and lowering the
The depth of the cabinet 10 is shortened
And the player S can be downsized. Also, R
In the ec state, as shown in FIG.
An operator (not shown) of the material 84 is pressed against the wall 31C to
The system control shown in Fig. 15
It is determined that the camera 110 is in the Rec state. (Unloading from the Rec state to the Eject state
Description of the scanning operation)
Operate the top key or eject key) 112
And the MD operation is performed in substantially the reverse of the loading operation described above.
Is ejected. That is, R shown in FIG. 24 and FIG.
When the motor 20 rotates clockwise from the ec state, the cam gear
When 30 rotates counterclockwise, the engagement pin 30C is engaged.
It is separated from the part 74B. Therefore, as shown in FIG.
The operating plate 74 is actuated by an urging force of an urging means (not shown).
Since it rotates counterclockwise, the control lever 7 shown in FIG.
0 rotates the head 64 clockwise. Therefore, FIG.
As shown in FIG. 4, the head 64 is separated from the MD and unlocked.
Is ready for loading. Cam gear 30 is counterclockwise
Further rotation in the direction, the small gear 30 of the cam gear 30
B and the pinion 32 engage again, and the stopper 29
So that the engagement pin 29A contacts the cam portion 30D.
The engagement projection 29B is moved from the engagement recess 15F of the rack 14
The separation allows the rack 14 to move forward. This state
When the cam gear 30 further rotates counterclockwise from
Since the hooks 14 and 16 move forward, the holder 14 also moves forward.
You. Then, as shown in FIG.
The mating pin 42 is connected to the tapered portion 46 of the rib 46 of the operation lever 44.
The holder 12 advances while abutting on the wall surface 47D of B.
Then, as shown in FIG.
The forces F3 and F3 'of the mating pin 42 are applied to the support shaft 4 of the operation lever 44.
The tapered portion 46B is formed so as to face 4A.
Even if the engagement pin 42 presses the wall surface 47D, the operation lever
No rotating force acts on 44, and the operating lever 44 rotates.
do not do. Therefore, the engaging pin 42 is
The ejection lever 38 is driven by the reaction force F2 of the force F3 pressing the discharge lever F3.
Rotates clockwise and pushes the MD forward. The figure
When unloading to the state of 29, the ejection lever
38 rotates clockwise to push MD from back to front
Therefore, the MD gradually projects from the holder 12, and
The shutter MDS of the MD is moved by the joint 12D,
The window MDW is gradually closed. Further from the state of FIG.
When unloading, the engagement pin 42
It is separated from the wall surface 47B of the linear portion 46A. In this case,
As shown in FIG. 30, MD is longer than the state shown in FIG.
It protrudes W minutes before and enters the eject state. Therefore, this implementation
According to the embodiment, the engagement pin 42 and the rib 46 (the tapered portion 46
B) and during loading and unloading
Sometimes, the discharge lever 38 is rotated and the operation lever 4
Rotate 4 when loading, and when unloading
Regulates the rotation of MD extruder
Since it can be performed without using 14, 16
The depth of the vignette 10 can be shortened,
S can be reduced in size. It should be noted that the present invention reproduces a recording medium.
Or, if it is a recording / playback device for recording, an MD player
Not limited to compact discs, MOs, cassette tapes
Recording / reproducing devices such as DVDs and DVDs, or recording-only or reproduction-only
The same can be applied to the above device.

As described above, according to the present invention, when the photodetection sensor detects that the rack is located at the reproduction position based on the detection unit, the holder is provided by the photodetection sensor having less variation than the mechanical switch. Is stopped immediately, so that the holder can be stopped accurately at the reproduction position.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a player according to the present invention.

FIG. 2 is an exploded perspective view of the player shown in FIG.

FIG. 3 is a plan view of the state (standby state) shown in FIG. 1;

FIG. 4 is a front view showing the state of FIG. 3;

FIG. 5 is a right side view showing the state of FIG. 3;

FIG. 6 is a rear view showing the state of FIG. 3;

FIG. 7 is a plan view showing a driving mechanism of the rack shown in FIG. 6;

FIG. 8 is a plan view of the cam gear shown in FIG. 7;

9 is a perspective view of the cam gear shown in FIG. 8 when viewed from the bottom.

FIG. 10 is a sectional view taken along line 10-10 of FIG. 8;

FIG. 11 is a right side view of the rack shown in FIG. 7;

FIG. 12 is a sectional view taken along line 12-12 in FIG. 11;

FIG. 13 is a sectional view taken along line 13-13 of FIG. 11;

FIG. 14 is a cross-sectional view of a main part of the head of the player shown in FIG. 1 in a play state.

FIG. 15 is a block diagram of the player shown in FIG. 1;

FIG. 16 is a plan view showing a state where the cartridge shown in FIG. 3 is completely inserted into a holder and the holder is slightly loaded.

FIG. 17 is a plan view showing a state where the holder shown in FIG. 16 is slightly loaded.

FIG. 18 is a diagram showing an engagement state between an engagement pin and a rib during loading.

19 is a plan view showing a state where the holder shown in FIG. 17 is slightly loaded.

20 is a plan view showing a state (play state) in which the holder shown in FIG. 16 has moved to the rearmost end.

FIG. 21 is a right side view showing a play state.

FIG. 22 is a front view showing the state of FIG. 21;

FIG. 23 is a plan view showing a state of a drive mechanism relating to the rack of FIG. 21;

24 is a plan view illustrating a state of the drive mechanism that changes from a play state to a Rec state in FIG. 23;

FIG. 25 is a right side view showing the state of the head in FIG. 24.

26 is a plan view showing a state of unloading from the play state of FIG. 24.

FIG. 27 is a diagram illustrating an engagement state between an engagement pin and a rib during unloading.

FIG. 28 is a plan view showing a state where the vehicle is slightly advanced from unloading in FIG. 26;

FIG. 29 is a plan view showing a state further advanced slightly from the unloading of FIG. 28;

30 is a plan view showing the unloading state to the ejection state (MD pushing state) in FIG. 28;

FIG. 31 is a perspective view showing a main part of a disk device according to a conventional example.

FIG. 32 is a perspective view showing a main part of the lever mechanism shown in FIG. 31.

FIG. 33 is a side view of the disk device shown in FIG. 31.

FIG. 34 is a plan view showing a standby state of the disk device shown in FIG. 31.

FIG. 35 is a plan view showing a loading state in which the holder is being loaded from the standby state shown in FIG. 34;

FIG. 36 is a plan view showing a play state in which a transition has been made from the loading state shown in FIG. 35 to a play mode.

FIG. 37 shows a transition from the play state shown in FIG. 36 to Rec.
It is a side view which shows the Rec state which became the mode.

FIG. 38 is a plan view of FIG. 37.

[Explanation of symbols]

Reference Signs List 10 cabinet 12 holder 14, 16 rack 20 motor (drive source) 30 cam gear (gear mechanism) 30B small-diameter gear (gear mechanism) 30B 'intermittent part (gear mechanism) 31B linear part (second engaging part) 31C linear part ( Detection unit, second detection unit, or first engagement unit) 32 pinion (gear mechanism) 64 head (recording member) 66 pickup (reproduction member) 82 play sensor (light detection sensor or second sensor)
Mini-disc (recording medium) S MD player (information equipment)

Claims (3)

[Claims] 1. A holder for accommodating a recording medium, a rack engaged with the holder and transporting the holder, a drive source for driving the rack, and a detection for detecting that the rack is located at a reproduction position. A gear mechanism for transmitting the driving force of the drive source to the rack; a reproducing member disposed at a position facing the recording medium after the transfer of the holder; and the recording medium after the transfer of the holder. And a light detection sensor for detecting a detection unit of the gear mechanism. The light detection unit detects that the rack is located at a reproduction position based on the detection unit. An information device for a recording medium, wherein the holder is immediately stopped when a sensor detects it. 2. A recording device comprising: a first detecting unit for detecting that the rack is located at a standby position; a second detecting unit for detecting that the rack is located at a reproducing position; A third light detector for detecting that the rack is in a standby state based on the first light detector, and a third light detector that forms a third light detector that detects that the rack is in a standby state; A second light detection sensor that detects that the rack is in a reproducing state based on a detection unit, and a third light detection sensor that detects that the rack is in a recording state based on the third detection unit The information device of a recording medium according to claim 1, further comprising: 3. A first engaging portion and a second engaging portion are formed on the detecting portion and a first engaging portion and a second engaging portion are formed on the detecting portion. When the rack is at a standby position, the first engaging portion is formed. The joint portion is locked by the locking portion, and the second engaging portion is locked by the locking portion when the rack is at the recording position. Information equipment of recording media.