JP2003085861A - Recording medium loading mechanism and recording and/ or reproducing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the handleability by facilitating the placement to the tray and the removal from the tray of a recording medium cartridge in an apparatus which loads a recording medium to a recording medium loading part by turning the principal surface of the recording medium in the almost horizontal direction. SOLUTION: The apparatus which loads the recording medium 102 to the recording medium loading part 54 in the state where the principal surface of the recording medium 102 is turned in the almost horizontal direction, is provided with a shutter opening and closing mechanism 33 which opens and closes the shutter 103 of the recording medium cartridge 100 on the tray 20. The shutter opening and closing mechanism opens the shutter of the recording medium cartridge when the tray is transferred from a placement position to a loading position. The shutter opening and closing mechanism closes the shutter of the recording medium cartridge when the tray is transferred from the loading position to the placement position. The shutter opening and closing mechanism turns the principal surface of the recording medium cartridge placed on the tray at the placement position in an almost vertical direction to draw almost the whole tray from the casing of a main body side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium loading mechanism and a recording and / or reproducing apparatus. Specifically, a mounting position where the recording medium cartridge is mounted and a mounting position where the recording medium is mounted in the recording medium mounting portion in a state where the main surface of the recording medium is housed in the main body side housing and the main surface of the recording medium faces the substantially horizontal direction. TECHNICAL FIELD The present invention relates to a technical field of a recording medium loading mechanism for moving a tray to and from a position to convey a recording medium, and a recording and / or reproducing apparatus including the recording medium loading mechanism.

[0002]

2. Description of the Related Art There is a disk recording and / or reproducing apparatus capable of recording and / or reproducing an information signal on a recording medium, for example, a disk-shaped recording medium such as a magneto-optical disk.

In such a disc recording and / or reproducing apparatus, a disc-shaped recording medium placed on a tray is mounted on a disc table inside a main body side casing with its main surface facing the front-rear direction. In some cases, the main body side housing is pulled out from the main body side housing until the tray is inclined with respect to the main body side housing, so that the disk-shaped recording medium can be placed on the tray and taken out from the tray.

[0004]

However, in the above-mentioned conventional disc recording and / or reproducing apparatus, since the tray can only be pulled out to the state in which the tray is inclined with respect to the main body side housing, a part of the tray is removed. However, there is a problem in that it is difficult to place the disk-shaped recording medium on the tray and take it out from the tray, and the usability is poor.

Therefore, the recording medium loading mechanism and the recording and / or reproducing apparatus of the present invention overcomes the above-mentioned problems and is mounted on the recording medium mounting portion so that the main surface of the recording medium faces the substantially horizontal direction. An object of the present invention is to improve the usability by facilitating the placement and removal of a disc-shaped recording medium from a tray.

[0006]

In order to solve the above-mentioned problems, a recording medium loading mechanism and a recording and / or reproducing apparatus according to the present invention are designed so that the recording medium is in a state where its main surface is oriented in a substantially horizontal direction. In a device mounted on a recording medium mounting portion, a shutter opening / closing mechanism for opening / closing a shutter of a recording medium cartridge is provided on a tray, and the shutter opening / closing mechanism allows the recording medium cartridge to be moved when the tray is moved from a mounting position to a mounting position. The shutter of the recording medium cartridge is closed by the shutter opening / closing mechanism when the shutter of the recording medium cartridge is opened and the tray is moved from the mounting position to the mounting position, and the main portion of the recording medium cartridge mounted on the tray at the mounting position is closed. With the surface oriented in a substantially vertical direction, almost the entire tray was pulled out from the main body side housing. It is.

Therefore, in the recording medium loading mechanism and the recording and / or reproducing apparatus of the present invention, the recording medium cartridge can be placed in and taken out from the tray outside the main body side casing.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.

In the embodiments shown below, the present invention can be used for both recording and reproduction with respect to the magneto-optical disk of the disk cartridge in which the magneto-optical disk is rotatably housed. The present invention is applied to a disc recording / reproducing device capable of performing the above and a recording medium loading mechanism provided therein.

The disc recording / reproducing apparatus 1 is composed of a main body 2 arranged in an outer casing (not shown) and a speaker (not shown). The main body 2 has a main body side casing 3 in which required members and mechanisms are provided. They are arranged (see FIGS. 1 to 3).

The main body side housing 3 has side plates 4 and 4 and a top plate 5 connecting the upper edges of the side plates 4 and 4 and a bottom plate 6 connecting the lower edges of the side plates 4 and 4. And a transparent window 3a is attached between the side plates 4 and 4. A lower portion of the front side opening of the main body side housing 3 which is not covered by the window portion 3a is formed as a tray insertion / removal opening 3b.

Guide holes 7, 7 are formed at positions near the front ends of the side plates 4, 4 (see FIG. 4). The guide hole 7 is located on the lower side and has a gentle substantially arcuate shape that is convex downward and obliquely rearward, a straight line portion 7b that continuously extends vertically from the upper end of the curved line portion 7a, and a straight line portion 7b. It is composed of an inclined portion 7c which is continuous with the upper end and extends obliquely upward and rearward.

On the rear side of the guide holes 7, 7 of the side plates 4, 4,
Guide holes 8 and 8 are formed, respectively (see FIG. 4). The guide hole 8 is located on the front side, and has a front curved portion 8a that is formed in a gentle, substantially arcuate shape that is convex obliquely downward and rearward, and a gentle substantially arcuate shape that is continuous with the rear end of the front curved portion 8a and that is convex downward and obliquely downward. And a horizontal portion 8c continuous to the upper end of the rear curved portion 8b and extending rearward.

Horizontal holes 8 of the guide holes 8, 8 of the side plates 4, 4.
On the upper side of c and 8c, shaft insertion holes 9 and 9 each having a gentle arc shape extending substantially vertically are formed (see FIG. 4).

Guide grooves 10 and 10 are formed on the outer surfaces of the side plates 4 and 4, respectively, which extend from the rear edge of the upper end portion to the front edge of the lower end portion and which are arcuately convex downward and obliquely rearward (FIG. Four
reference). The lower end of the guide groove 10 is located rearward of the front edge of the side surface plate 4, and a disposition notch 4a is formed continuously with the lower end of the guide groove 10 and has a gentle arc shape. The notch 4a for arrangement is opened to the front.

The side plates 4 and 4 are provided with first support shafts 4b and 4b at positions above the front curved portions 8a and 8a of the guide holes 8 and 8, respectively. The second support shafts 4c and 4c are provided at the side positions (see FIG. 4).

On the inner surface of the right side plate 4, a movement control projection 4d is provided in the vicinity of the front curved portion 8a of the guide hole 8 (see FIG. 4).

The cover body 11 comprises a cover body 12 and cover arms 13 and 13 attached to the cover body 12 (see FIGS. 1 to 3).

The cover body 12 is made of a transparent material and has a rectangular plate shape.

The cover arms 13 and 13 are formed by integrally attaching the attached portions 14 and 14 and the arm portions 15 and 15, respectively, so that the attached portions 14 and 14 and the arm portions 15 and 15 are orthogonal to each other. It is provided. Cover arm 13,
13, the attached parts 14 and 14 are the cover main body 12 respectively.
Are attached to the left and right ends of the inside from the inside. An escape hole 15a that is long in the direction in which the arm portion 15 extends is formed at the end of the arm portion 15 on the opposite side to the attached portion 14. The arm portion 15 is provided with a cam shaft 15b projecting outward and a guided shaft 15c projecting inward at positions opposite to each other of the escape hole 15a. The guided shaft 15c is provided at the tip of the arm portion 15.

In the cover body 11, the first support shafts 4b and 4b provided on the side plates 4 and 4 are inserted into the escape holes 15a and 15a, respectively, and the guided shafts 15c and 15c are guided to the side plates 4 and 4, respectively. It is slidably engaged with the holes 8 and movably supported by the main body side body 3. Cam gears 16, 16
Is the first support shafts 4b and 4b provided on the side plates 4 and 4.
Each of them is rotatably supported, and gear portions 16a, 16a are formed on the entire circumference of the outer peripheral portion (see FIG. 5).

A cover cam groove 17 is formed on the inner surface of the cam gear 16 on the rotation center side. Cam groove for cover 1
Reference numeral 7 denotes an outer non-acting portion 17a and an acting portion 1 which are continuously formed.
7b, the displacement portion 17c, and the inner non-acting portion 17d. The outer non-acting portion 17a has a gentle arc shape centered on the rotation center of the cam gear 16
Is located away from the center of rotation of the cam gear 16, the acting portion 17b has a curved shape that rapidly approaches the center of rotation of the cam gear 16 as it moves away from the outer non-acting portion 17a, and the displacement portion 17c moves away from the acting portion 17b. The inner non-acting portion 17d has an arc shape centered on the rotation center of the cam gear 16 and is located closer to the rotation center of the cam gear 16.

A lever cam groove 18 is formed on the inner surface of the cam gear 16. The lever cam groove 18 is composed of an inner non-operating portion 18a, an operating portion 18b, and an outer non-operating portion 18c which are continuously formed. The inner non-operating portion 18a has a long arc shape centered on the rotation center of the cam gear 16, and the operating portion 18b has a linear shape that is displaced toward the outer peripheral side of the cam gear 16 as it moves away from the inner non-operating portion 18a. The outer non-operating portion 18c has a short arc shape centered on the rotation center of the cam gear 16 and is located along the outer peripheral edge of the cam gear 16.

The cam gears 16, 16 are side plates 4,
4, the cover cam groove 17,
The cam shafts 15b and 15b of the cover body 11 are slidably engaged with 17 (see FIG. 6).

The movable levers 19 and 19 are formed in a substantially arcuate shape and are slidably supported in the guide grooves 10 and 10 of the side plates 4 and 4, respectively (see FIGS. 6 to 9).

The moving lever 19 has one end portion 1 located on the front side.
A rack 19b is provided in a portion excluding 9a
A toothless portion 19c where the rack 19b is not formed is formed continuously with the rack 19b at the portion on the a side. A support hole 19d is formed at one end of the moving lever 19, and the one end portion 1
A sliding pin 19e protruding outward is provided on 9a.

The tray 20 comprises a frame 21 and a mounting plate 22 attached to the frame 21 (see FIG. 10).

The frame portion 21 has a U-shape that is open to one side, and has a base end portion 23 that is long in the left and right and a left side portion 24 that protrudes from both end portions of the base end portion 23 in a direction orthogonal to the base end portion 23. The right side portion 25 and the right side portion 25 are integrally formed (see FIGS. 10 and 1).
1). A plurality of mounting plate mounting bosses 21a, 21a, ... Are provided at predetermined positions on the inner surface of the frame portion 21 (see FIG. 11).

Mounting plate mounting bosses 21a, 21a, ...
Among them, the one provided at the right end of the base end portion 23 is also provided as the support shaft portion 21b.

A notch-shaped finger insertion portion 23a is formed at a substantially central portion of the base end portion 23 in the left-right direction. Proximal end 2
An insertion notch 23b is formed at a position closer to the right end of 3 (see FIG. 11).

The base end portion 23 and the left side portion 24 are each formed in a U shape when viewed in cross section. The right side portion 25 is composed of an upper wall surface portion 26 and a side wall surface portion 27 which are orthogonal to each other, and shaft mounting bosses 26a, 26a are provided so as to be spaced apart from the inner surface of the upper wall surface portion 26 in the front-rear direction (see FIG. 11). Bearing portions 26b, 26b are provided on the inner surface of the upper wall surface portion 26 between the shaft mounting bosses 26a, 26a so as to be spaced apart from each other in the front-rear direction (see FIG. 11).

A control wall 28 is provided on the inner surface of the upper wall surface 26 at a position opposite to the base end 23 side. On the inner surface of the upper wall surface portion 26, a control groove 29 is formed by two wall portions that are spaced from the control wall 28 toward the base end portion 23 side and are spaced apart from each other at regular intervals in the left and right directions (FIG. 11). reference). The control groove 29 includes an intermediate portion 29a and one end portion 29b and the other end portion 2 which are connected to both ends of the intermediate portion 29a via inclined portions.
9c, one end portion 29b and the other end portion 29c have the same position in the left-right direction and are located closer to the baffle side wall surface portion 26 side than the intermediate portion 29a.

The left side portion 24 and the right side portion 25 are provided with supported protrusions 21c, 21c protruding leftward or rightward at the ends on the base end 23 side, respectively, and opposite to the base end 23. Guided pins 21d, 2 which are protruded leftward or rightward on the side end portion
1d is provided.

The mounting plate 22 includes a main surface portion 30 and the main surface portion 3
The standing wall portion 31 that is bent from one end edge of 0 in a direction orthogonal to the one edge is integrally formed (see FIG. 10). A through hole 30a having a large opening is formed in the main surface portion 30,
Further, a plurality of holes 30b, 30b, ... Are formed at predetermined positions.

The mounting plate 22 is attached to the mounting plate mounting bosses 21a, 21a, ... Of the frame portion 21 at the peripheral edge portion of the main surface portion 30 via mounting screws. The tray 20 is configured by being attached to the frame portion 21 (see FIG. 10). The tray 20 is provided with a mounting recess 20a surrounded by the main surface portion 30 of the mounting plate 22, the standing wall portion 31, the base end portion 23 of the frame portion 21, the left side portion 24, and the right side portion 25 (FIG. 10). reference). The tray 20 has a right side 2
5 and the right end of the mounting plate 22 form an arrangement space 21e that is open to the left (see FIG. 11).

At both right and left ends of the standing wall portion 31, pressing protrusions 31a, 31a protruding toward the mounting recess 20a are formed.
Are provided (see FIG. 10). Pressing protrusion 31a,
Pressing springs 32, 32 functioning as pressing parts for pressing a disk cartridge, which will be described later, are attached to the inner surface of 31a (see FIG. 12). The holding spring 32 is a leaf spring, and the attached portion 32a attached to the holding projection 31a and the elastic contact portion 3 that is bent from the attached portion 32a to the opposite side and is convex toward the main surface portion 30 side of the mounting plate 22.
2b and 1b are integrally formed.

The tray 20 includes guided pins 21d and 21d.
Are slidably engaged from inside with guide holes 7 and 7 formed in the side plates 4 and 4, respectively.
Are supporting holes 19d and 19 of the moving levers 19 and 19, respectively.
It is rotatably supported by d (see FIG. 3).

The shutter opening / closing mechanism 33 is movably supported in the arrangement space 21e of the tray 20 via a guide shaft 34 (see FIGS. 13 and 14).

The shutter opening / closing mechanism 33 is a slider 35.
The slider 35 is supported by the guide shaft 34 so as to be movable in the axial direction. The slider 35 is formed by integrally forming a main portion 36 and a supported portion 37 that are long in one direction, and bearing portions 36a and 36a through which the guide shaft 34 is inserted are provided at the right end portion of the main portion 36. A pressing piece 36b is provided at one end in the longitudinal direction of the main portion 36, and a spring hooking portion 36c is provided at the other end in the longitudinal direction. The main part 36 is separated from the main part 36 in the longitudinal direction by the first shaft part 36.
d and the second shaft portion 36e are provided so as to project.

The supported portion 37 projects rightward from the right edge of the main portion 36, and the controlled shaft 37a is provided at the tip thereof.

An opening / closing lever 38 is rotatably supported on the first shaft portion 36d of the main portion 36. Open / close lever 38
Is an opening / closing portion 39 which is a plate shape elongated in one direction and the opening / closing portion 39.
And a supported shaft portion 40 provided at one end portion thereof are integrally formed. At the other end of the opening / closing part 39, a holding piece 39a protruding leftward and an actuated shaft 39b protruding from the right edge are provided.

The opening / closing lever 38 has a supported shaft portion 40 rotatably supported by the first shaft portion 36d of the slider 35.

A lock release lever 41 is rotatably supported on the second shaft portion 36e of the main portion 36. The lock release lever 41 is formed by integrally forming a lock release portion 42 having a plate shape elongated in one direction and a supported shaft portion 43 provided at one end of the lock release portion 42. Unlocking unit 42
At the other end of the lock release piece 42,
a is projected to the left. A spring hooking projection piece 42b is provided in the central portion of the unlocking portion 42 in the longitudinal direction. A cam projection edge 44 is formed on the right edge of the other end of the unlocking portion 42.

The cam ridge 44 is displaced forward to the right by displacing to the right toward the rear side inclined portion 44a, a horizontal portion 44b continuous to the front end of the rear inclined portion 44a, and the front end of the horizontal portion 44b. Front inclined portion 44c that is displaced to the left according to
It is composed of and.

In the lock release lever 41, the supported shaft portion 43 is rotatably supported by the second shaft portion 36e of the slider 35. In this state, the torsion coil spring 45 has a coil portion 45a.
Is supported by the supported shaft portion 43 in an externally fitted manner and the arm portion 45
b and 45c are engaged with the spring hooking protrusion 42b and the second spring hooking portion 36c of the slider 35, respectively. Therefore, the lock release lever 41 is counterclockwise when viewed in a plane by the torsion coil spring 45, that is, A shown in FIG.
Is urged in the direction.

The slider 35 rotatably supporting the opening / closing lever 38 and the lock release lever 41 as described above.
Is supported by the guide shaft 34 slidably, and the compression coil spring 46 is supported by the guide shaft 34, whereby the shutter opening / closing mechanism 33 is configured.

The guide shaft 34 is attached to bearings 26b and 26b provided on the right side portion 25 of the tray 20 and is attached to the shaft attaching bosses 26a and 26a by attaching screws 34a and 3b.
By pressing the both ends of the guide shaft 34 by the head of 4a, the shutter opening / closing mechanism 33 is arranged in the space 21e.
(See FIG. 14). The compression coil spring 46 is contracted between the bearing portion 36a located on the pressing piece 36b side and the bearing portion 26b of the tray 20 located on the base end portion 23 side. Therefore, the slider 35 is urged in the direction away from the base end portion 23, that is, in the B direction shown in FIG.

A pressing member 47 is rotatably supported on the inner surface of the base end portion 23 of the tray 20 (see FIG. 14).
The pressing member 47 includes a supported shaft portion 47a, a pressed portion 47b protruding from the supported shaft portion 47a, and a supported shaft portion 4
A protruding portion 47c protruding from 7a in a direction substantially opposite to the pressed portion 47b and a pressing portion 47d protruding in a direction orthogonal to the tip edge of the protruding portion 47c are integrally formed. In the pressing member 47, the supported shaft portion 47 a is rotatably supported by the support shaft portion 21 b provided at the right end portion of the base end portion 23.

A pressing spring 48 is attached to the inner surface of the pressing portion 47d of the pressing member 47 (see FIG. 15). The pressing spring 48 is a leaf spring, and the pressing portion 47d
And a resilient contact portion 48b which is bent from the mounted portion 48a to the opposite side and is convex toward the opposite side to the side where the pressing portion 47d is located.

When the pressing member 47 is supported by the base end portion 23, the pressed portion 47b is located inside the right side portion 25, and the pressing portion 47d is inserted into the insertion notch 23b formed in the base end portion 23. Correspondingly located (see FIG. 14).
The coil portion of the torsion coil spring 49 is supported by the supported shaft portion 47a, and the pressing member 47 is the torsion coil spring 49.
Direction in which the pressing portion 47d is pulled back from the insertion notch 23b into the inside of the base end portion 23, that is, C shown in FIG.
Biased in the direction.

The drive gears 50, 50 are rotatably supported by the second support shafts 4c, 4c provided on the side plates 4 and 4, respectively, and the gear parts 50a, 50a are formed on the entire outer circumference. (See FIGS. 6, 8 and 9).

A sliding groove 51 is formed on the inner surface of the drive gear 50, and the sliding groove 51 is formed continuously with the insertion start end portion 5.
1a and a holding portion 51b (see FIGS. 8 and 9). The insertion start end portion 51a is opened to the peripheral surface of the drive gear 50, that is, the gear portion 50a, and is formed so as to form an involute curve. The holding portion 51b is formed in an arc shape around the rotation center of the drive gear 50.

The drive gears 50, 50 are the side plates 4,
In the state of being supported by the gears 4,
a, 50a on the outer end side and the gear portion 16 of the cam gear 16
a, 16a mesh with each other, the inner ends of the gear parts 50a, 50a and the racks 19b, 19 of the moving levers 19, 19 are engaged.
and b are engaged (see FIG. 9). The drive gears 50, 50 are connected by a synchronous shaft (not shown) arranged in the main body side housing 3, and rotate in synchronization.

When the driving force of a drive motor (not shown) arranged in the main body side housing 3 is transmitted to rotate the drive gears 50, 50 in synchronization, the cam gears 16, 16 rotate the drive gears 50, 50. The drive gear 5 rotates in the direction corresponding to the direction, that is, in the R1 direction or the R2 direction shown in FIG.
The direction corresponding to the rotation direction of 0 and 50, that is, T shown in FIG.
The moving levers 19 and 19 are guided and moved in one direction or T2 direction by the guide grooves 10 and 10 formed in the side plates 4 and 4, respectively.

A mechanical chassis 53 is attached to the inside of the main body side housing 3 via a plurality of rubber insulators 52, 52, ... (See FIG. 16).

The mechanical chassis 53 comprises a mechanism arranging surface portion 53a and side surface portions 53b and 53b which are bent rearward from both left and right edges of the mechanism arranging surface portion 53a.
b and 53b are attached to the side plates 4 and 4 via the insulators 52, 52 ,.

In the mechanical chassis 53, a spindle motor (not shown) and a disk table 54 fixed to the motor shaft of the spindle motor are arranged in the substantially central portion thereof. An optical pickup 55 is supported on the mechanical chassis 53 so as to be movable in the left-right direction, that is, in the radial direction of a magneto-optical disk described later.

The optical pickup 55 is a moving base 55.
a and a biaxial actuator 55b supported on the moving base 55a, the moving base 55a is moved by the driving force of a threading motor (not shown) attached to the back surface of the mechanical chassis 53. The biaxial actuator 55b has an objective lens 55c.

Four positioning pins 53c, 53c, ... Are provided at predetermined positions of the mechanical chassis 53 (see FIG. 16).

As described above, the mechanical chassis 53 provided with the disc table 54 and the optical pickup 55.
Is attached to the main body side housing 3 via the insulators 52, 52, ..., It is difficult for the vibration generated in the main body side housing 3 to be transmitted to the disc table 54 and the optical pickup 55.

Moving base 55a of optical pickup 55
A head mechanism 56 is attached to the upper end of the head mechanism 56, and the head mechanism 56 includes a head support plate 57, a support arm 58, and a magnetic head 59 (see FIG. 17).

The head support plate 57 is formed in a substantially U-shape when viewed from the side, and has an attached portion 57a and the attached portion 57a.
And a mounting portion 57b rotatable with respect to. The mounted portion 57a is mounted on the upper end of the moving base 55a, and the upper end of the support arm 58 is mounted on the front end of the mounting portion 57b.

At the rear end of the mounting portion 57b of the head support plate 57, an actuated piece 57c protruding upward is provided. The support arm 58 is formed of a thin leaf spring material, and a magnetic head 59 is attached to the tip thereof.

In the head mechanism 56, the magnetic head 5
9 is biased by a biasing spring (not shown) in a direction approaching the objective lens 55c of the optical pickup 55 located behind it.

A head moving lever 6 is provided between the side plates 4 and 4.
0 is rotatably supported (see FIGS. 17 and 18). The head moving lever 60 includes a base portion 61 that is long in the left and right.
And leg portions 62, 62 projecting from the left and right side edges of the base portion 61 in the same direction orthogonal to each other, and an action portion 63 projecting downward from the center portion of the base portion 61 in the left-right direction are integrally formed. Become. Each of the legs 62, 62 has a rotating shaft 6 projecting outward at a position close to the base 61.
2a and 62a are provided, and engaging shafts 62b and 62b protruding outward are provided at the tip end portion.

The head moving lever 60 includes a rotating shaft 62.
a and 62a are rotatably supported by the side plates 4 and 4, respectively, and the engagement shafts 62b and 62b are inserted from inside into shaft insertion holes 9 and 9 formed in the side plates 4 and 4, respectively, and the cam gear 1
The lever cam grooves 18 and 18 of 6 and 16 are slidably engaged.

As described above, in the head mechanism 56, since the magnetic head 59 is urged in the direction of approaching the objective lens 55c of the optical pickup 55 positioned behind it, the magnetic head 59 is provided on the head support plate 57. Action piece 57
c is urged substantially forward, that is, in the D direction shown in FIG. 17, and the acting piece 57c is pressed from the front by the acting portion 63 of the head moving lever 60 positioned in front of the acting piece 57c. ing.

The disc cartridge 100 is constructed such that a magneto-optical disc 102 is rotatably accommodated in a case body 101 having a flat and substantially rectangular shape, and a shutter 103 is slidably supported by the case body 101 (FIGS. 19 to 19). 21).

The case body 101 is formed in a substantially rectangular shape, and shallow recesses 101 are formed at corresponding positions on the upper and lower surfaces.
a and 101b are formed, and the recesses 101a and 101b are formed closer to the side surface 101c. Side 10
1c includes a groove portion 101 that extends in the front-rear direction and is opened rearward.
d is formed.

An insertion hole 101e is formed in the central portion of the lower surface of the case body 101 (see FIG. 20), and the magneto-optical disk 1 is formed.
The disc table 54 disposed in the mechanical chassis 53 is inserted through the insertion hole 101e at the time of recording and reproducing the information signal to and from the optical disc 02, and the core portion 102a made of a magnetic metal material provided at the center of the magneto-optical disc 102 is formed. The magneto-optical disk 102 is chucked by being attracted to a magnet (not shown) embedded in the disk table 54.

Recesses 101a and 101b of the case body 101
Has an upper opening 101f and a lower opening 101g at corresponding positions. The magneto-optical disc 1 is used at the time of recording and reproducing an information signal with respect to the magneto-optical disc 102.
02, the magneto-optical disk 102 is irradiated with the laser beam through the lower opening 101g in the reproducing mode for reproducing the information signal, and the upper side in the recording mode for recording the information signal in the magneto-optical disk 102. Opening 1
The magnetic head 59 on the magneto-optical disk 102 via 01f.
A magnetic field is applied to the magneto-optical disk 102 through the lower opening 101g, and laser light is applied to the magneto-optical disk 102. At a predetermined position of the case body 101, for example, a first display 101j indicating the recordable time of the information signal on the magneto-optical disc 102 is provided (see FIG. 20).

Positioning recesses 104k, 104k, ... Are formed at the four corners of the lower surface of the case body 101, respectively.

The shutter 103 is formed by bending a thin plate-shaped metal material into a predetermined shape.
Upper surface part 104 slid in the concave part 101a and lower surface part 105 slid in the concave part 101b and side surface 101
The side surface portion 106 slid on the c is integrally formed. The side surface portion 106 includes the upper surface portion 104 and the lower surface portion 105.
Has a protruding portion 106a that protrudes further rearward, and a locked piece 106b that is bent in the same direction as the upper surface portion 104 and is located in the groove portion 101d of the case body 101 is formed at the tip of the protruding portion 106a ( 19 and 21). An engagement hole 106c is formed in a substantially central portion of the side surface portion 106 in the front-rear direction (see FIG. 19).

The upper surface 104 of the shutter 103 is provided with, for example, a second display 103a indicating the recordable time of the information signal for the magneto-optical disk 102 (see FIGS. 19 and 21).

A lock member 107 is supported in the case body 101, and the lock member 107 has a rotating shaft portion 107.
The elastic contact portion 107b and the lock portion 107c, which are respectively projected from the rotation shaft portion 107a, are integrally formed of a resin material (see FIG. 21). The elastic contact portion 107b and the lock portion 107c are bifurcated so that the rotation shaft portion 1 is formed.
07a, and the lock portion 107c has a lock concave portion 107d opened rightward at the tip end side portion thereof.
Are formed.

On the upper surface of the case body 101, for example, the user of the disc cartridge 100 can see the magneto-optical disc 10
Label 1 on which the contents recorded in 2 can be written
08 can be attached (see FIGS. 19 and 21). The label 108 allows the user to write the content recorded on the magneto-optical disk 102 as the third display 108a.

A support rib 101h and a support shaft portion 101i are formed at predetermined positions in the case body 101, and the rotation shaft portion 107a of the lock member 107 is supported by the support shaft portion 101i and the support rib portion is supported. The elastic contact portion 107b of the lock member 107 is elastically contacted with 101h from the right side. Therefore, the lock member 107 can be elastically displaced in the direction in which the lock portion 107c elastically separates from and contacts the elastic contact portion 107b.

The sliding movement of the shutter 103 is restricted by locking the locked piece 106b in the locking recess 107d of the locking member 107 (this position is hereinafter referred to as the "closed position" of the shutter 103). At this time, the upper opening 1 of the case body 101 is opened by the upper surface portion 104.
01f is closed, and the lower opening 101g of the case body 101 is closed by the lower surface portion 105.

When the lock member 107 is elastically displaced in the direction in which the lock portion 107c is separated from the locked piece 106b, the locked state of the lock recess 107d with respect to the locked piece 106b is released, and the shutter 1 of the lock member 107 is released.
03 is unlocked and the shutter 103
It becomes possible to perform the slide operation. When the shutter 103 is slid from the closed position, both the upper opening 101f and the lower opening 101g of the case body 101 are opened (this position is hereinafter referred to as the "open position" of the shutter 103), and the above-described magneto-optical property is obtained. It is possible to apply a magnetic field to the disk 102 and irradiate the magneto-optical disk 102 with laser light.

The operation of the disc recording / reproducing apparatus 1 will be described below (see FIGS. 22 to 36).

First, the state when the tray 20 is in the mounting position, that is, the disc cartridge 100 is in the tray 20
The state of each part when it is inserted and mounted in the mounting recess 20a will be described (see FIG. 22). This state shows the state before the loading operation of the disc cartridge 100.

The cover body 11 is opened and is in the open position, and the main surface of the cover body 12 is oriented substantially vertically. Cam shaft 15b of arm portion 15 of cover body 11
Is the outer non-acting portion 1 of the cover cam groove 17 of the cam gear 16.
7a (see FIG. 22). The guided shaft 15c of the cover body 11 is engaged with the front end portion of the front curved portion 8a of the guide hole 8 of the side plate 4 (see FIG. 22).

The tray 20 has a guided pin 21d of the frame 21.
Is engaged with the lower end of the curved portion 7a of the guide hole 7 of the side plate 4 (see FIGS. 22 and 23). A portion of the rack 19b of the moving lever 19 located at the end opposite to the side supporting the tray 20 is meshed with the gear portion 50a of the drive gear 50 (see FIG. 22). Therefore, the tray 20 is positioned such that the mounting recess 20a faces substantially upward, and substantially the entire portion is pulled out from the main body side housing 2 to the front side (FIG. 23).
reference).

The head moving lever 60 has an engaging shaft 62b.
Is the inner non-operation part 1 of the lever cam groove 18 of the cam gear 16.
It is engaged with the end of 8a opposite to the operating portion 18b (see FIG. 23).

The head mechanism 56 is restricted in movement by the actuated piece 57c of the head support plate 57 being pressed from the front by the acting portion 63 of the head moving lever 60, so that the movement between the magnetic head 59 and the mechanical chassis 53 is restricted. A space having a sufficient size for inserting the tray 20 is formed in the tray (see FIG. 23). Therefore, this position of the magnetic head 59 of the head mechanism 56 is the retracted position separated from the mechanical chassis 53.

At the mounting position of the tray 20 described above,
The disk cartridge 100 is inserted into the mounting recess 20a and mounted on the mounting plate 22 (see FIG. 23). To insert the disc cartridge 100 into the mounting recess 20a, the shutter 103 is positioned on the right side, and one end of the disc cartridge 100 is pressed by the pressing projection 31a of the mounting plate 22.
It is performed so as to make it sneak into the lower side of 31a. When the disc cartridge 100 is inserted into the mounting recess 20a, one end of the disc cartridge 100 elastically contacts the elastic contact portions 32b and 32b of the pressure springs 32 and 32 attached to the inner surfaces of the pressure protrusions 31a and 31a. (See FIG. 24).

Therefore, the disk cartridge 1 is simply inserted into the mounting recess 20a.
Since 00 is securely pressed and held in the mounting recess 20a, it is possible to easily prevent rattling of the disk cartridge 100 in the mounting recess 20a.

Further, since the pressing protrusions 31a, 31a are provided at one end of the tray 20, almost the entire surface of the disc cartridge 100 can be visually recognized, the appearance can be improved, and the case of the disc cartridge 100 can be improved. The first display 101j, the second display 103a, and the third display 108a attached to the body 101, the shutter 103, or the label 108 can be visually recognized, and the type and content of the inserted disk cartridge 100 can be easily recognized. Therefore, the usability of the disc recording / reproducing apparatus 1 can be greatly improved.

The disk cartridge 100 inserted in the mounting recess 20a is provided with the locked piece 10 of the shutter 103.
6b is engaged with the lock recess 107d of the lock member 107, and the shutter 103 is locked at the closed position. In the state before the loading operation is performed, the shutter opening / closing mechanism 33 is located at the rear end of the tray 20 (see FIG. 25). At this time, in the opening / closing lever 38, the operated shaft 39b is engaged with the one end 29b of the control groove 29, and the operated shaft 39b is positioned on the right side of the rotation fulcrum (see FIG. 25). Therefore, the entire opening / closing lever 38 is in a state of being shielded by the upper wall surface portion 26 of the right side portion 25 of the tray 20,
It is not visible from the outside.

The lock release lever 41 is urged by the torsion coil spring 45 in the direction of approaching the guide shaft 34 located on the right side, and the front side inclined portion 44c of the cam projection edge 44 is fixed to the tray 2.
It is positioned in the state of being close to or in contact with the rear end of the control wall 28 of 0 (see FIG. 25). Therefore, the lock release lever 4
Similarly to the opening / closing lever 38, the whole 1 is in a state of being shielded by the upper wall surface portion 26 of the right side portion 25 of the tray 20 so that it cannot be visually recognized from the outside and the disc cartridge 100 is placed in the mounting recess 20a. It has been designed so that it does not interfere with the insertion.

As described above, the disk cartridge 1
When 00 is inserted into the mounting recess 20a and mounted, and a loading button (not shown) is operated, the drive gears 50 and 50 are synchronously rotated by the drive of the drive motor and meshed with the drive gears 50 and 50. Cam gears 16, 16 are R
While being rotated in one direction (shown in FIG. 22 and below), the moving levers 19 and 19 are moved in the T1 direction (shown in FIG. 22 and below), and the loading operation of the disc recording / reproducing apparatus 1 is started.

When the cam gear 16 is rotated in the R1 direction,
The cam shaft 15b of the cover body 11 is relatively moved from the outer non-acting portion 17a of the cover cam groove 17 to the inside of the acting portion 17b, and the guided shaft 15c moves inside the front curved portion 8a of the guide hole 8 to the rear curved portion. It is moved toward 8b (see FIG. 26). Therefore, the cover body 11 is rotated toward the closed position for closing the tray insertion / removal opening 3b of the main body side body 3.

Even if the cam gear 16 rotates in the R1 direction, the engaging shaft 62b of the head moving lever 60 is relatively moved within the inner non-operating portion 18a of the lever cam groove 18 (see FIG. 26). , Not rotated. Therefore, the magnetic head 5
9 is still held in the retracted position.

When the moving lever 19 is moved in the T1 direction, the tray 20 supported by the moving lever 19 has its base end 23 moved rearward and the guided pin 2 is moved.
1d is moved in the curved portion 7a of the guide hole 7 toward the straight portion 7b (see FIG. 26). Therefore, the tray 20 is drawn into the main body side housing 3 from the tray insertion / removal opening 3b while approaching the vertical state.

When the tray 20 is pulled into the main body side housing 3 by the movement of the moving lever 19 in the T1 direction, at the same time, the shutter opening / closing mechanism 33 arranged in the arrangement space 21e of the tray 20 is operated. Shutter opening / closing mechanism 3
3, the controlled shaft 37a of the slider 35 comes into contact with the movement control projection 4d provided on the inner surface of the right side plate 4 to restrict movement, and the movement of the tray 20 into the main body side housing 3 is accompanied. The slider 35 is relatively slid relative to the tray 20 toward the base end portion 23, that is, in the S1 direction (shown in FIG. 25 and below) (see FIG. 27).

When the slider 35 is moved in the S1 direction, the front slanted portion 44c and the horizontal portion 44b of the cam projection edge 44 of the lock release lever 41 are sequentially moved to the control wall 28 of the tray 20.
The lock release lever 41 is rotated in a direction approaching the disc cartridge 100 against the biasing force of the torsion coil spring 45 (see FIG. 27). The lock release lever 41 has a lock release piece 42a which is the disc cartridge 1
00 is inserted into the groove portion 101d of the case body 101 and is moved in the same S1 direction as the slider 35 is moved in the S1 direction at this time. Therefore, the lock portion 107c of the lock member 107 is pressed by the unlocking piece 42a. Then, the shutter 10 is elastically displaced in a direction of releasing the lock of the shutter 103, that is, in a direction of approaching the elastic contact portion 107b, and the engagement with the locked piece 106b is released to release the shutter 10.
The lock for 3 is released (see FIG. 27).

At the same time, since the opening / closing lever 38 is moved in the same S1 direction as the slider 35 is moved in the S1 direction, the operated shaft 39b of the opening / closing lever 38 moves from the one end 29b of the control groove 29 to the inside of the intermediate portion 29a. The holding piece 39a of the opening / closing lever 38 is moved to be engaged with the engagement hole 106c of the shutter 103 of the disc cartridge 100 (FIG. 27).
reference).

When the cam gear 16 is continuously rotated in the R1 direction by the rotation of the drive gear 50, the cam shaft 15b of the cover body 11 is engaged with the intersection of the action portion 17b of the cover cam groove 17 and the displacement portion 17c. The state is continued, and the guided shaft 15c moves inside the rear curved portion 8b of the guide hole 8 into the horizontal portion 8c.
It is moved toward (see FIG. 28). Therefore, the cover body 11 is largely rotated toward the closed position, and is moved to immediately in front of the tray insertion / removal opening 3b.

Even if the cam gear 16 rotates in the R1 direction, the engaging shaft 62b of the head moving lever 60 is still relatively moved within the inner non-operating portion 18a of the lever cam groove 18 (see FIG. 28). ), Not rotated. Therefore, the magnetic head 59 is still held at the retracted position.

The rotation of the drive gear 50 causes the moving lever 19 to move.
Is continuously moved in the T1 direction, the moving lever 19
The tray 20 supported by the base end 23 of the tray 20 is further moved rearward, and the guided pin 21d is guided by the guide hole 7a.
The straight portion 7b is moved toward the inclined portion 7c (see FIG. 28). Therefore, the tray 20 is further drawn into the main body side housing 3 from the tray insertion / removal opening 3b while approaching the vertical state.

When the tray 20 is further drawn into the main body side housing 3 by the movement of the moving lever 19 in the T1 direction, the shutter opening / closing mechanism 33 arranged in the arrangement space 21e of the tray 20 is continuously operated. In the shutter opening / closing mechanism 33, the controlled shaft 37a of the slider 35 continues to be provided on the inner surface of the right side plate 4 and the movement control projection 4d.
The movement of the tray 20 is restricted by contact with the main body side casing 3 of the tray 20.
With the inward movement, the slider 35 is further slid in the S1 direction relative to the tray 20 (FIG. 2).
9).

When the slider 35 is further moved in the S1 direction, the horizontal portion 44b of the cam projection edge 44 of the lock release lever 41 is brought into sliding contact with the control wall 28 of the tray 20, and the lock release lever 41 is twisted by the coil spring 45. The state of being rotated in the direction of approaching the disc cartridge 100 against the biasing force of is retained, and the state of unlocking the shutter 103 is retained (see FIG. 29).

At this time, since the opening / closing lever 38 is further moved in the same S1 direction as the slider 35 moves in the S1 direction, the shutter 103 in which the holding piece 39a of the opening / closing lever 38 is engaged with the engagement hole 106c. Slides from the closed position to the open position (see FIG. 29). Therefore, the upper opening 101f and the lower opening 101g of the case body 101 are opened. In addition, the lock portion 107 of the lock member 107 of the disc cartridge 100
Since c is separated from the lock release lever 41, it is rotated in a direction away from the elastic contact portion 107b and the shutter 1 is again released.
Return 03 to the lockable position.

When the cam gear 16 continues to rotate in the R1 direction by the rotation of the drive gear 50, the cam shaft 15b of the cover body 11 relatively moves the inside of the displacement portion 17c of the cover cam groove 17 toward the inner non-acting portion 17d. The guided shaft 15c is moved rearward in the horizontal portion 8c of the guide hole 8 (see FIG. 30). Therefore, the cover body 11 is moved rearward toward the closed position where the tray insertion / removal opening 3b is closed.

Even if the cam gear 16 rotates in the R1 direction, the engaging shaft 62b of the head moving lever 60 is still relatively moved within the inner non-operating portion 18a of the lever cam groove 18 (see FIG. 30). ), Not rotated. Therefore, the magnetic head 59 is still held in the retracted position.

The rotation of the drive gear 50 causes the moving lever 19 to move.
Is continuously moved in the T1 direction, the moving lever 19
The tray 20 supported by the base end 23 of the tray 20 is further moved rearward, and the guided pin 21d is guided by the guide hole 7a.
The inside of the inclined portion 7c is moved obliquely upward and rearward (see FIG. 30). Therefore, the tray 20 is further drawn into the main body side housing 3 and is in a substantially vertical state.

When the moving lever 19 is moved in the T1 direction to bring the tray 20 into the vertical state, the moving lever 19
Sliding pin 19e is inserted into and engaged with the insertion start end portion 51a of the sliding groove 51 of the drive gear 50 (FIGS. 30 and 31).
reference). The sliding pin 19e of the moving lever 19 drives the drive gear 5
When it is inserted into the insertion start end portion 51a of 0, the meshing between the gear portion 50a of the drive gear 50 and the rack 19b of the moving lever 19 is released by the movement of the moving lever 19 in the T1 direction, and the gear portion 50a moves. The missing tooth portion 19 of the lever 19
It is located corresponding to c (see FIG. 31).

When the sliding pin 19e of the moving lever 19 is inserted into the insertion start end portion 51a of the drive gear 50, the moving lever 19 is moved in the T1 direction and the drive gear 50 is rotated. Insertion start end 51
a is formed as an involute curve, and the insertion start end portion 51a has a shape corresponding to the movement locus of the slide pin 19e that is slid during the rotation of the drive gear 50, and the movement of the movement lever 19 causes the rotation of the drive gear 50. Therefore, the rotation of the drive gear 50 is not hindered by the movement of the moving lever 19. Therefore, the smooth operation of the moving lever 19 and the drive gear 50 is ensured, and the stable operation state of the disc recording / reproducing apparatus 1 can be ensured.

Further, after the sliding pin 19e of the moving lever 19 is inserted into the insertion start end portion 51a of the driving gear 50, the gear portion 50a of the driving gear 50 and the rack 1 of the moving lever 19 are inserted.
Since the meshing with 9b is released, the linked state between the moving lever 19 and the drive gear 50 is not released, and when the linked state between the movable lever 19 and the drive gear 50 is released, the moving lever 19 is moved by its own weight to T2. It is possible to ensure the reliability of the operation of the disc recording / reproducing apparatus 1 without the tray 20 being moved in the direction and being moved toward the mounting position.

When the tray 20 is further drawn into the main body side housing 3 by the movement of the moving lever 19 in the T1 direction, the shutter opening / closing mechanism 33 arranged in the arrangement space 21e of the tray 20 is continuously operated. In the shutter opening / closing mechanism 33, the controlled shaft 37a of the slider 35 continues to be provided on the inner surface of the right side plate 4 and the movement control projection 4d.
The movement of the slider 35 is restricted by contact with the
With the movement of 0 into the main body side housing 3, it is further slid in the S1 direction relative to the tray 20 (FIG. 3).
2).

When the slider 35 is further moved in the S1 direction, the rear inclined portion 44a of the cam projection edge 44 of the lock release lever 41 is brought into sliding contact with the control wall 28 of the tray 20, and the lock release lever 41 is twisted. The coil spring 45 is rotated by the urging force of the coil spring 45 in a direction away from the disc cartridge 100, and is again shielded by the upper wall surface portion 26 of the tray 20 (see FIG. 32).

Since the opening / closing lever 38 is further moved in the same S1 direction as the slider 35 is moved in the S1 direction, the operated shaft 39b of the opening / closing lever 38 is engaged with the other end 29c of the control groove 29. The opening / closing lever 38 is a holding piece 39a.
Is rotated in a direction away from the disc cartridge 100, and the whole is again shielded by the upper wall surface portion 26 of the tray 20. Therefore, the engagement between the holding piece 39a of the opening / closing lever 38 and the engagement hole 106c of the shutter 103 is released.

As described above, in the disc recording / reproducing apparatus 1, when the tray 20 is housed inside the main body side casing 3, the opening / closing lever 38 and the lock release lever 41 of the shutter opening / closing mechanism 33 are both attached to the disc. Cartridge 1
No. 00 shutter 103 engagement hole 106c or groove 10
The shutter 33 is separated from 1d so that the shutter 33 does not interfere with the disc cartridge 100. Therefore, even when the vibration is transmitted to the disc cartridge 100 at the time of recording and reproducing the information signal on the magneto-optical disc 102, which will be described later, only the case body 101 is restricted by the shutter opening / closing mechanism 33 and the case body 101 is exposed to light. It does not vibrate separately from the magnetic disk 102,
As a result, the problem that the magneto-optical disk 102 contacts the inner surface of the case body 101 does not occur, and the recording and reproduction of the information signal can be properly performed.

When the slider 35 is moved to the movement end in the S1 direction, the pressed portion 47b of the pressing member 47 supported on the inner surface of the base end portion 23 is pressed by the pressing piece 36b (see FIG. 32). Therefore, the pressing member 47 is rotated in the direction in which the pressing portion 47d projects into the mounting recess 20a against the biasing force of the torsion coil spring 49, and the pressing portion 47d is removed from the insertion notch 23b of the base end portion 23. Be projected.

At this time, the disc cartridge 100 has already been
One end of each of the pressing protrusions 31a of the mounting plate 22 is attached to the inner surface of the pressing spring 32, 32 of the elastic contact portion 32 of the 32.
Although pressed by b and 32b, the pressing portion 47d is projected from the insertion notch 23b,
The other end of the disc cartridge 100 also has a pressing portion 47d.
Elastic contact part 48b of the presser spring 48 attached to the inner surface of the
It is elastically contacted with and pressed (see FIGS. 32 and 33).

Therefore, the disc cartridge 100 can be securely held in the mounting recess 20a, and play in the mounting recess 20a of the disc cartridge 100 can be prevented.

Further, the tray 20 is held by the pressing member 47.
Since the other end of the disk cartridge is pressed, the disk cartridge 1
The entire surface of 00 can be visually recognized to improve the appearance, and the first display 101j, the second display 103a, and the third display 101j, the third display 103a, and the third display 103a attached to the case body 101, the shutter 103, or the label 108 of the disc cartridge 100 can be seen. Can be visually recognized, the type and content of the inserted disc cartridge 100 can be easily recognized, and the usability of the disc recording / reproducing apparatus 1 can be greatly improved.

When the cam gear 16 continues to rotate in the R1 direction by the rotation of the drive gear 50, the cam shaft 15b of the cover body 11 moves relative to the inside non-acting portion 17d within the displacement portion 17c of the cover cam groove 17. The guide shaft 15c is moved to the rear end of the horizontal portion 8c of the guide hole 8 (see FIG. 34). Therefore, the cover body 11 is moved rearward to reach the closed position, and the tray insertion / removal opening 3b is closed.

Even if the cam gear 16 rotates in the R1 direction, the engagement shaft 62b of the head moving lever 60 is still relatively moved within the inner non-operating portion 18a of the lever cam groove 18 (see FIG. 33). ), Not rotated. Therefore, the magnetic head 59 is still held in the retracted position.

When the drive gear 50 is continuously rotated, the sliding pin 19e of the moving lever 19 is moved within the insertion start end portion 51a of the sliding groove 51, and subsequently within the holding portion 51b (see FIG. 34). ).

The rotation of the drive gear 50 causes the moving lever 19 to move.
When the sliding pin 19e of is moved in the insertion start end portion 51a of the sliding groove 51, the moving lever 19 is moved in the direction T1 and the guided pin 21d of the tray 20 is moved to the guide hole 7a.
Is moved to the upper end of the inclined portion 7c of the disk table 5 and the tray 20 is moved upward and obliquely rearward with the disk table 5 kept vertical.
4 reaches the mounting position where the magneto-optical disk 102 is mounted on the disk 4 (see FIG. 34).

When the tray 20 reaches the mounting position, the disc table 54 supported by the mechanical chassis 53 is moved to the tray 2
The disk table 54 is projected from the through hole 30a by the movement of 0, and the disk table 54 becomes
01 is inserted through the insertion hole 101e of the magneto-optical disc 1
02 is attached. The magneto-optical disc 102 is mounted on the disc table 54 by adsorbing a core portion 102a provided at the center of the magneto-optical disc 102 to a magnet (not shown) embedded in the disc table 54. With the magneto-optical disk 102 mounted on the disk table 54, the magneto-optical disk 10
The disk 2 is held by the disk table 54 in a state where it is not in contact with any part of the case body 101, and the smooth rotation of the magneto-optical disk 102 is ensured.

When the tray 20 reaches the mounting position, the movement of the tray 20 causes the holes 30b and 30 of the mounting plate 22 to move.
Positioning pins 53c, 53c, ... Provided on the mechanical chassis 53 are projected from b ,.
Positioning recesses 101k, 101k, ...
The positioning pins 53c, 53c, ... Are inserted into the box to position the disk cartridge 100.

As described above, when the drive gear 50 is continuously rotated, the sliding pin 19e of the moving lever 19 is moved from the insertion start end portion 51a of the sliding groove 51 into the holding portion 51b. When the sliding pin 19e moves in the holding portion 51b, the moving lever 19 is not moved in the T1 direction, and the tray 20 is mounted via the moving lever 19 by the sliding pin 19e being engaged with the holding portion 51b. Held in position (see FIG. 34).

When the tray 20 reaches the mounting position and the magneto-optical disk 102 is mounted on the disk table 54, the drive motor is stopped and the rotation of the drive gear is stopped (see FIG. 34).

Then, when a play button (not shown) is operated,
Disk table 5 with the rotation of the spindle motor
The magneto-optical disk 102 mounted on the No. 4 is rotated, and the magneto-optical disk 102 is irradiated with the laser beam through the objective lens 55c of the optical pickup 55, and the reproducing operation of the information signal for the magneto-optical disk 102 is performed.

The laser light passes through the objective lens 55c and the through hole 30.
It is irradiated toward the magneto-optical disk 102 through a and the lower opening 101g of the case body 101.

On the other hand, when the recording button, not the reproduction button, is operated when the tray 20 reaches the mounting position, the drive motor is rotated again and the drive gear 50 is further rotated in the same direction as before.

When the cam gear 16 is continuously rotated in the R1 direction by the rotation of the drive gear 50, the cam shaft 15b of the cover body 11 is relatively moved within the inner non-acting portion 17d of the cover cam groove 17 to the end thereof. Guided shaft 15
c is still engaged with the rear end of the horizontal portion 8c of the guide hole 8 (see FIG. 35). Therefore, the cover body 11 remains held in the closed position.

When the cam gear 16 rotates in the R1 direction, the engagement shaft 62b of the head moving lever 60 relatively moves from the inner non-operating portion 18a of the lever cam groove 18 through the operating portion 18b to the outer non-operating portion 18c. It is moved (see FIG. 35). Since the engaging shaft 62b is moved within the operating portion 18b, the head moving lever 60 is rotated in the direction in which the engaging shaft 62b moves substantially upward (see FIG. 36). Therefore, the action portion 63 of the head moving lever 60 is not attached to the head supporting plate 57.
When the support arm 58 is moved toward the magneto-optical disk 102, the magnetic head 59 is pressed.
Is inserted into the case body 101 through the upper opening 101f of the disc cartridge 100 and brought into contact with the magneto-optical disc 102 (see FIG. 36). The position where the magnetic head 59 contacts the magneto-optical disk 102 is the recordable position.

Even if the drive gear 50 is continuously rotated, the sliding pin 19e of the moving lever 19 is held in the holding portion 5 of the sliding groove 51.
Since the tray 20 is moved within 1b, the tray 20 is not moved and is still held at the mounting position (see FIG. 35).

As described above, the cam shaft 15 of the cover body 11
b is relatively moved to the end of the inner non-acting portion 17d of the cover cam groove 17, and the engagement shaft 62b of the head moving lever 60 is relatively moved to the end of the outer non-acting portion 18c of the lever cam groove 18. When the drive gear is moved to, the drive motor is stopped and the rotation of the drive gear 50 is stopped (see FIG. 35).

Subsequently, the magneto-optical disk 102 is rotated with the rotation of the spindle motor, and the magneto-optical disk 1 is passed through the objective lens 55c of the optical pickup 55.
02 is irradiated with a laser beam and a magnetic field is applied from the magnetic head 59 of the head mechanism 56 to record an information signal on the magneto-optical disk 102.

As described above, in the reproducing mode for reproducing the information signal on the magneto-optical disk 102 and the recording mode for recording the information signal on the magneto-optical disk 102, the disk cartridge 100 is in the vertical state. Since the main surface faces the front-back direction, the user of the disc recording / reproducing apparatus 1 can visually recognize the disc cartridge 100 from the front through the window 3a and the cover body 11.

At this time, since only the magneto-optical disc 102 of the disc cartridge 100 is rotating, the user can make the first display 1 attached to the case body 101, the shutter 103 or the label 108 of the disc cartridge 100.
01j, the second display 103a, and the third display 108a can be visually recognized from the outside front, and the type and contents of the disk cartridge 100 currently being reproduced or recorded can be easily recognized, and the disk recording / reproducing apparatus can be realized. It is possible to greatly improve the usability of 1.

Further, since the disc cartridge 100 can be visually recognized from the front outside, the design of the disc recording / reproducing apparatus 1 can be improved.

If the case body 101 of the disk cartridge 100 is transparent or semi-transparent, the rotating state of the magneto-optical disk 102 inside the case body 101 can be confirmed from the outside front side.

In the above recording mode or reproducing mode, when the reproducing operation or recording operation of the information signal for the magneto-optical disk 102 is completed and the rotation of the magneto-optical disk 102 is stopped, the user operates an eject button (not shown). By doing so, the eject operation is started. This eject operation is the operation opposite to the loading operation because the drive motor is rotated in the direction opposite to that during the loading operation, and will be briefly described below.

When the drive motor is rotated in the opposite direction to the loading operation, the drive gear 50 is also rotated in the opposite direction to the loading operation, the cam gear 16 is rotated in the R2 direction, and the moving lever 19 is moved in the T2 direction. Be moved.

In the recording mode, the cam gear 16 moves to R2.
When rotated in the direction, the engaging shaft 6 of the head moving lever 60
2b is relatively moved from the outer non-moving portion 18c of the lever cam groove 18 to the inner non-moving portion 18a via the working portion 18b, and the engagement shaft 62b is moved to the working portion 18 of the inner non-moving portion 18a.
It is relatively moved to the end opposite to the side b. Therefore,
The magnetic head 59 is moved from the recordable position to the retracted position (see FIG. 23).

When the cam gear 16 is rotated in the R2 direction,
The cam shaft 15b of the cover body 11 is relatively moved in the outer non-acting portion 17a from the inner non-acting portion 17d of the cover cam groove 17 through the displacement portion 17c and the acting portion 17b, and the working portion of the outer non-acting portion 17a. It is moved to the end opposite to the 17b side. The guided shaft 15c of the cover body 11 passes from the horizontal portion 8c of the guide hole 8 to the rear curved portion 8b and then to the front curved portion 8c.
It is moved in a and is moved to the end opposite to the rear curved portion 8b side of the front curved portion 8a. Therefore, the cover body 11
Is first moved to the front, then pivoted to move upwards, from the closed position to the open position,
The tray insertion / removal opening 3b is opened (see FIG. 22).

In the moving lever 19, the rotation of the drive gear 50 causes the sliding pin 19e to relatively move from the holding portion 51b of the sliding groove 51 to the insertion start end portion 51a. The moving lever 19 is moved in the T2 direction by relatively moving the sliding pin 19e in the insertion start end portion 51a, and when the sliding pin 19e is relatively moved in the insertion start end portion 51a, the rack is moved. 19b meshes with the gear portion 50a of the drive gear 50. When the drive gear 50 is subsequently rotated, the sliding pin 19e is pulled out from the insertion start end portion 51a, and the rack 19b is sent by the rotation of the drive gear 50 to move the moving lever 19 in the T2 direction.

By the movement of the moving lever 19 in the T2 direction, the guided pin 21d of the tray 20 is moved from the inclined portion 7c of the guide hole 7 to the lower end of the curved portion 7a via the straight portion 7b, and the tray 20 is inserted and removed. It is pulled out from 3b and moved from a mounting position in a vertical state to a mounting position in a substantially horizontal state (see FIGS. 22 and 23).

When the tray 20 is pulled out from the main body side housing 3 by the movement of the moving lever 19 in the T2 direction, at the same time, the shutter opening / closing mechanism 33 arranged in the arrangement space 21e of the tray 20 is operated.

When the moving lever 19 is moved in the T2 direction, the tray 20 is moved toward the mounting position, so that the slider 37 is relatively moved in the S2 direction with respect to the tray 20 by the spring force of the compression coil spring 46. Then, the opening / closing lever 38 is moved in the same S2 direction. Open / close lever 38
Is moved in the S2 direction, the actuated shaft 39b is moved from the other end 29c of the control groove 29 to the inside of the intermediate part 29a, and the opening / closing lever 38 is rotated in the direction in which the holding piece 39a approaches the disc cartridge 100. The holding piece 39a is engaged with the engagement hole 106c of the shutter 103.

Since the slider 37 is continuously moved relative to the tray 20 in the S2 direction, the engaging hole 106
The shutter 103 in which the holding piece 39a is engaged with c is slid toward the closed position, and the upper opening 101f and the lower opening 101g are closed. Since the operated shaft 39b of the opening / closing lever 38 reaches the one end 29b from the intermediate portion 29a of the control groove 29, and the opening / closing lever 38 is rotated in the direction in which the holding piece 39a is separated from the disk cartridge 100, the shutter of the holding piece 39a is released. Engaging hole 106c of 103
Is disengaged. At this time, the shutter 103 reaches the closed position, and the lock member 107 is locked by the lock recess 107d.
To lock the shutter 103 in the closed position (see FIG. 25).

As described above, when the respective parts of the disc recording / reproducing apparatus 1 and the disc cartridge 100 return to the original state before loading, the rotation of the drive motor is stopped and the rotation of the drive gears 50, 50 is stopped.

The user can take out the disk cartridge 100 from the mounting recess 20a of the tray 20.
At this time, the user can easily take out the disc cartridge 100 by inserting a finger into the finger insertion portion 23a provided at the base end portion 23 of the frame portion 21.

As described above, at the mounting position, the main surface of the disk cartridge 100 mounted on the tray 20 is oriented in a substantially vertical direction, and the disk cartridge 1
Almost all of 00 is pulled out from the main body side housing 3.

Therefore, even when the main surface of the disc cartridge 100 is oriented in a substantially horizontal direction at the mounting position of the tray 20, the disc cartridge 100 can be easily inserted into and taken out from the tray 20, and the disc recording / reproducing operation can be performed. The usability of the device 1 can be improved.

Further, in the disc recording / reproducing apparatus 1, a moving lever 19 having a substantially arc shape is provided, and the tray 20 is set to the mounting position by moving the moving lever 19 in the arc direction with respect to the main body side housing 3. Since the tray 20 is moved to and from the mounting position, a large movement stroke of the tray 20 can be ensured, and the entire tray 20 can be reliably pulled out from the main body side housing 3.

Further, in the disc recording / reproducing apparatus 1, by the cam gears 16 and 16 and the moving levers 19 and 19 which are operated in accordance with the drive gears 50 and 50 which are rotated by transmitting the driving force of the drive motor, Since the cover body 11 and the tray 20 are moved, the cover body 11
Also, the tray 20 is always operated at the same timing, and the reliability of the operation can be ensured.

In addition, the head moving levers 19 and 19 which are operated by the rotation of the cam gears 16 and 16 to move the magnetic head 59 in the direction of separating from and contacting the magneto-optical disk 102.
Since the above is provided, it is possible to reliably set the recording mode for recording the information signal on the magneto-optical disk 102.

Next, the cam shaft 15b and the guided shaft 15c provided on the arm portion 15 of the cover body 11 and the cam gear 1 are provided.
The relationship with 6 will be described (see FIGS. 37 to 41).

As described above, the cover body 11 is moved between the closed position and the open position by the rotation of the cam gear 16, but as shown in FIGS.
It is also possible to provide one engaging shaft 15d on A and move the cover body 11 between the closed position and the open position.

That is, the cover cam groove 1 is formed in the cam gear 16A.
7A, the engaging shaft 15d of the arm portion 15A penetrates through the guide hole 8 formed in the main body side housing 3, and the engaging shaft 15d is slidably engaged with the cover cam groove 17A ( (See FIG. 37). The cover cam groove 17A includes an inner non-acting portion 17e, an acting portion 17f, and a displacement portion 1 which are continuously formed.
7g and the outer non-acting part 17h (see FIG. 38). The inner non-acting portion 17e is the cam gear 16A.
Is located near the center of rotation of the cam gear 16, and the acting portion 17f forms a curved shape toward the outer peripheral side of the cam gear 16 as it moves away from the inner non-acting portion 17e. The portion 17g has a curved shape that approaches the outer peripheral edge of the cam gear 16 as it moves away from the acting portion 17f, and the outer non-acting portion 17h has an arc shape with the rotation center of the cam gear 16 as the center. Are located along.

When the cam gear 16A is rotated in the R1 direction, the engaging shaft 15d moves from the inner non-acting portion 17e to the acting portion 1e.
7f and the displacement portion 17g, the outer non-acting portion 17h is relatively moved, and the front side curved portion 8a of the guide hole 8 of the main body side housing 3 is moved to the rear end of the horizontal portion 8c through the rear side curved portion 8b. To be done. When the engagement shaft 15d is moved in the cover cam groove 17A and the guide hole 8 by the rotation of the cam gear 16A in this way, it passes through the same movement locus as the movement of the cover body 11 by the rotation of the cam gear 16 described above. The cover body 11 is moved from the open position to the closed position.

However, the engagement shaft 1 is attached to the arm portion 15A.
When 5d is provided to rotate the cam gear 16A to move the cover body 11, it is necessary to penetrate the engagement shaft 15d into the guide hole 8 and further engage the engagement shaft 15d with the cover cam groove 17A. However, the length of the engaging shaft 15d becomes long, and it is not possible to secure sufficient strength of the shaft.

Therefore, in the disc recording / reproducing apparatus 1, as described above, the cam shaft 15b and the guided shaft 15c, which are projected to opposite sides, are provided at different positions of the arm portion 15 of the cover body 11, The side surface plate 4 of the main body side body 3 and the cam gear 16 are positioned on opposite sides of the arm portion 15 so that the cover body 11 is operated (see FIG. 39).

FIG. 40 shows the arm portion 15A and the cam gear 1.
When the arm portion 15 and the cam gear 16 are used in place of 6A, the cover cam groove 17A is replaced with the cover cam groove 1A so that the cover body 11 can be operated without changing the movement trajectory thereof.
FIG. 8 is a diagram showing a drawing method for replacing with 7.

As shown in FIG. 40, the arm portion 15 is provided with a cam shaft 15a and a guided shaft 15c on the opposite side with the first support shaft 4b inserted into the escape hole 15a interposed therebetween. Center P of cam shaft 15b and center Q of guided shaft 15c
Considering a line segment M of a distance L connecting with and, consider a movement locus of the center P when the cam shaft 15b moves in the cover cam groove 17A. The movement locus of one end Q'of the line segment M of the distance L passing from the arbitrary point on the movement locus of the center P through the center of the first supported shaft 4b becomes the movement locus of the guided shaft 15c.

In this way, by taking an arbitrary point on the movement locus of the center P as a reference and considering the movement locus of one end Q'of the line segment M of the distance L passing through the center of the first supported shaft 4b, the cover is obtained. The cam groove 17 for a cover can be designed, and the cam groove 17A for a cover can be replaced with the cam groove 17 for a cover.

FIG. 41 shows a case where the cover body 11 is operated by the rotation of the cam gear 16 in which the cover cam groove 17A is replaced with the cover cam groove 17.
As shown in FIG. 41, even when the cam gear 16 in which the cover cam groove 17A is replaced with the cover cam groove 17 is used, the same operation of the cover body 11 as in the case of using the cam gear 16A shown in FIG. 38 is performed. Will be realized.

As described above, in the disc recording / reproducing apparatus 1, the arm portion 15 of the cover body 11 is located on the opposite side of the arm portion 15 with the first support shaft 4b inserted into the escape hole 15a interposed therebetween, and the arm portion 15 is located therebetween. Since the cam shaft 15b and the guided shaft 15c which are projected to the opposite side from each other are provided, the side surface plate 4 and the cam gear 16 can be positioned on the opposite side with the arm portion 15 interposed therebetween (see FIG. 39). .

Therefore, the cam shaft 15b and the guided shaft 15c
It is possible to secure sufficient axial strength by shortening the length of and, and it is possible to improve the reliability of the operation of the disk recording / reproducing apparatus 1.

The specific shapes and structures of the respective portions shown in the above-mentioned embodiments are merely examples of the embodiment when the present invention is carried out, and accordingly, the present invention can be realized. The technical scope should not be limitedly interpreted.

[0167]

As is apparent from the above description, in the recording medium loading mechanism of the present invention, the case body, which is held by the tray that moves with respect to the main body side housing and the recording medium is housed, has the shutter. The recording medium of the recording medium cartridge supported slidably is loaded by moving the tray, and the main surface of the recording medium is accommodated in the mounting position where the recording medium cartridge is placed and the main body side casing. Is a recording medium loading mechanism for moving the tray between the recording medium mounting portion and the mounting position where the recording medium is mounted in a substantially horizontal direction, and the shutter of the recording medium cartridge is opened and closed on the tray. A shutter opening / closing mechanism is provided so that the shutter opening / closing mechanism can be used when the tray is moved from the mounting position to the mounting position. When the shutter of the recording medium cartridge is opened and the tray is moved from the mounting position to the mounting position, the shutter of the recording medium cartridge closes the shutter of the recording medium cartridge, and recording is performed on the tray at the mounting position. The main surface of the medium cartridge is oriented in a substantially vertical direction, and substantially the entire tray is pulled out from the main body side housing.

Therefore, even when the main surface of the recording medium cartridge faces the substantially horizontal direction at the mounting position, the recording medium cartridge can be easily placed on and taken out from the tray, and the recording medium loading mechanism is provided. It is possible to improve the usability of the device.

According to the second aspect of the invention, a guide portion is formed in the main body side casing, and a movable lever is formed in a substantially arc shape and is supported by the main body side casing so as to be movable in the arc direction. The guided part slidably supported by the guide part is provided at one end of the tray, and the supported part rotatably supported by the moving lever is provided at the other end of the tray. Since the guided portion is guided by the guide portion by moving the tray to the tray so that the tray can be moved between the mounting position and the mounting position, a large movement stroke of the tray can be secured and the entire tray can be moved. It can be reliably pulled out from the main body side housing.

According to the third aspect of the present invention, the tray is moved between the mounting position and the mounting position through the tray insertion / removal opening formed in the main body side casing, and the tray is attached to the main body side casing. A drive gear that is rotatably supported and is rotated by transmitting the drive force of the drive motor, a cam gear that is rotatably supported by the main body side housing and that is rotated by meshing with the drive gear, and a rotation of the cam gear. Depending on the direction, the tray insertion / ejection opening is opened when the tray is moved toward the loading position and the tray insertion / ejection opening is opened when the tray is moved toward the loading position. A cover body that is moved in the closing direction is provided, a rack that meshes with the drive gear is formed on the moving lever, and the moving lever is moved in the arc direction by the rotation of the drive gear. B is operated at all times at the same timing, it is possible to ensure reliable operation.

According to the invention described in claim 4, in the state where the recording medium is mounted in the recording medium mounting portion, the recording medium is moved in one direction or in another direction opposite to the one direction depending on the rotation direction of the cam gear. Since the head moving lever is provided for moving the signal recording unit for recording the information signal on the recording medium by moving the recording medium in the one direction or the other direction, the head moving lever is provided. It is possible to reliably set the recording mode for recording the information signal.

According to the fifth aspect of the invention, the movable lever is provided with a toothless portion which is continuous with the rack and has no rack teeth, and the drive gear is provided with a sliding groove. The moving lever is provided with a sliding pin that is inserted into the sliding groove of the drive gear when the moving lever is moved in one direction in the arc direction, and the sliding pin is inserted while the driving gear is rotating and the moving lever is moving. The insertion start end that has a shape corresponding to the movement locus of the sliding pin that moves and slides during the rotation of the drive gear is formed in the sliding groove, and the sliding pin is inserted into the insertion starting end of the sliding groove. After that, the engagement between the drive gear and the gear portion of the moving lever is released to position the drive gear in correspondence with the toothless portion of the moving lever, so that the smooth operation of the moving lever and the driving gear is ensured, Stable operating state of recording medium loading mechanism It can be ensured.

Further, since the sliding pin of the moving lever is inserted into the insertion start end portion of the drive gear, the engagement between the drive gear and the rack of the moving lever is released, so that the linking state between the moving lever and the drive gear is changed. The release lever is not released, and the release lever is not moved by its own weight due to the release of the linked state of the drive lever and the drive gear, so that the tray is not moved toward the loading position. The reliability of the operation can be improved.

According to the sixth aspect of the invention, a cam portion is formed on the cam gear, a guide portion is formed on the main body side casing, the cover body is the cover main body, and the arm portion is projected from the cover main body. And a cam shaft slidably engaged with the cam portion and guided shafts slidably engaged with the guide portion are provided. The length of the cam shaft and the guided shaft can be shortened to ensure sufficient shaft strength, and the reliability of the operation of the recording medium loading mechanism can be improved.

The recording and / or reproducing apparatus of the present invention is a recording medium cartridge which is held by a tray which moves with respect to the main body side casing, and in which a shutter is slidably supported by a case body which stores the recording medium. The recording medium is loaded by moving the tray, and the recording medium is housed in the mounting position where the recording medium cartridge is mounted and inside the main body-side housing, and the main surface of the recording medium is oriented in a substantially horizontal direction. The tray is moved between the recording medium mounting portion and the mounting position where the recording medium mounting portion is mounted, and the recording and / or reproducing of the information signal is performed by the signal recording portion and / or the signal reproducing portion on the recording medium of the recording medium cartridge Records and /
Alternatively, in the reproducing apparatus, a shutter opening / closing mechanism for opening / closing the shutter of the recording medium cartridge is provided in the tray, and when the tray is moved from the mounting position to the mounting position, the shutter opening / closing mechanism causes the recording medium cartridge to open / close. When the shutter is opened and the tray is moved from the mounting position to the mounting position, the shutter of the recording medium cartridge is closed by the shutter opening / closing mechanism, and the main portion of the recording medium cartridge mounted on the tray at the mounting position is closed. It is characterized in that the surface is oriented in a substantially vertical direction and substantially the entire tray is pulled out from the main body side casing.

Therefore, even when the main surface of the recording medium cartridge faces the substantially horizontal direction at the mounting position, the recording medium cartridge can be easily placed on and taken out from the tray, and the recording and / or reproducing apparatus can be carried out. The usability of can be improved.

According to the invention described in claim 8, a guide portion is formed in the main body side casing, and the movable lever is formed in a substantially arc shape and is supported by the main body side casing so as to be movable in the arc direction. Provided at one end of the tray is a guided part slidably supported by a guide part, and at the other end of the tray is a supported part rotatably supported by a moving lever. The tray is moved between the loading position and the mounting position by guiding the guided part to the guiding part by moving to, so a large movement stroke of the tray can be secured and the tray as a whole can be secured. It can be pulled out from the main body side housing.

According to the invention described in claim 9, the tray is moved between the mounting position and the mounting position through the tray insertion / removal opening formed in the main body side casing, and is moved to the main body side casing. A drive gear that is rotatably supported and is rotated by transmitting the drive force of the drive motor, a cam gear that is rotatably supported by the main body side housing and that is rotated by meshing with the drive gear, and a rotation of the cam gear. Depending on the direction, the tray insertion / ejection opening is opened when the tray is moved toward the loading position and the tray insertion / ejection opening is opened when the tray is moved toward the loading position. A cover body that is moved in the closing direction is provided, a rack that meshes with the drive gear is formed on the moving lever, and the moving lever is moved in the arc direction by the rotation of the drive gear. B is operated at all times at the same timing, it is possible to ensure reliable operation.

According to the tenth aspect of the invention, in the state in which the recording medium is mounted in the recording medium mounting portion, the recording medium is moved in one direction or another direction opposite to the one direction depending on the rotation direction of the cam gear. Since the head moving lever is provided for moving the signal recording unit for recording the information signal on the recording medium by moving the recording medium in the one direction or the other direction, the head moving lever is provided. It is possible to reliably set the recording mode for recording the information signal.

According to the invention described in claim 11, a mounting recess for inserting and mounting the recording medium cartridge in the tray is formed, and one end edge of the recording medium cartridge inserted in the mounting recess is formed. Since the pressing portion for pressing and holding is provided at one end of the tray, the recording medium cartridge is securely pressed and held in the mounting concave portion only by inserting the recording medium cartridge into the mounting concave portion. It is possible to easily prevent backlash in the mounting recess.

Further, since the pressing protrusion is provided at one end of the tray, almost the entire surface of the recording medium cartridge can be visually recognized, the appearance can be improved, and the case body of the recording medium cartridge can be attached. The displayed information can be visually recognized, the type and content of the inserted recording medium cartridge can be easily recognized, and the usability of the recording and / or reproducing apparatus can be greatly improved.

According to the twelfth aspect of the present invention, a mounting recess is formed in which the recording medium cartridge is inserted and mounted in the tray, and the direction in which the recording medium cartridge is projected into the mounting recess and the withdrawal from the mounting recess. The tray is movably supported in the mounting direction, and when the tray is moved from the mounting position to the mounting position, the tray is moved in the direction in which it is projected into the mounting recess in conjunction with the operation of the shutter opening / closing mechanism. Since the tray is provided with the pressing member that presses and holds one end edge of the recording medium cartridge inserted in the mounting recess, the recording medium cartridge can be securely held in the mounting recess, and the inside of the mounting recess of the recording medium cartridge It is possible to easily prevent backlash.

Further, since the one end edge of the tray is pressed by the pressing member, substantially the entire surface of the recording medium cartridge can be visually recognized, the appearance can be improved, and the display attached to the case body of the recording medium cartridge or the like. Can be visually recognized, and the type and contents of the inserted recording medium cartridge can be easily recognized.
Alternatively, the usability of the playback device can be greatly improved.

In the thirteenth aspect of the present invention, the movable lever is formed with a toothless portion which is continuous with the rack and has no rack teeth, and the drive gear is provided with a sliding groove. The moving lever is provided with a sliding pin that is inserted into the sliding groove of the drive gear when the moving lever is moved in one direction in the arc direction, and the sliding pin is inserted while the driving gear is rotating and the moving lever is moving. The insertion start end that has a shape corresponding to the movement locus of the sliding pin that moves and slides during the rotation of the drive gear is formed in the sliding groove, and the sliding pin is inserted into the insertion starting end of the sliding groove. After that, the engagement between the drive gear and the gear portion of the moving lever is released to position the drive gear in correspondence with the toothless portion of the moving lever, so that the smooth operation of the moving lever and the driving gear is ensured, Stable operating condition of recording and / or reproducing apparatus It can be ensured.

Further, after the sliding pin of the moving lever is inserted into the insertion start end portion of the drive gear, the engagement between the drive gear and the rack of the moving lever is released, so that the linking state between the moving lever and the drive gear is changed. Recording and / or reproduction does not occur, and the tray does not move toward the loading position due to the moving lever moving by its own weight when the linking state between the moving lever and the drive gear is released. The reliability of the operation of the device can be improved.

According to the fourteenth aspect of the present invention, a cam portion is formed on the cam gear, a guide portion is formed on the main body side casing, the cover body is the cover main body, and the arm portion is projected from the cover main body. And a cam shaft slidably engaged with the cam portion and guided shafts slidably engaged with the guide portion are provided. The length of the cam shaft and the guided shaft can be shortened to ensure sufficient shaft strength, and the reliability of operation of the recording and / or reproducing apparatus can be improved.

[Brief description of drawings]

1 shows an embodiment of the present invention together with FIGS. 2 to 41, and is a perspective view of a disc recording / reproducing apparatus showing a state in which a cover body is in a closed position.

FIG. 2 is a perspective view of the disc recording / reproducing apparatus showing a state in which a cover body is at an open position.

FIG. 3 is an exploded perspective view of a disc recording / reproducing device.

FIG. 4 is an enlarged side view of a side plate.

FIG. 5 is a side view of a cam gear.

FIG. 6 is an enlarged perspective view showing each member supported by a side plate.

FIG. 7 is an enlarged perspective view of a moving lever.

FIG. 8 is a side view showing a relationship between a drive gear, a cam gear, and a moving lever.

FIG. 9 is an enlarged perspective view showing a relationship among a drive gear, a cam gear, and a moving lever.

FIG. 10 is an enlarged front view showing the tray.

FIG. 11 is an enlarged rear view showing the frame portion of the tray.

12 is an enlarged sectional view taken along line XII-XII in FIG.

FIG. 13 is an enlarged exploded perspective view of a shutter opening / closing mechanism.

FIG. 14 is an enlarged plan view showing a shutter opening / closing mechanism and a pressing member.

15 is an enlarged sectional view taken along line XV-XV in FIG.

FIG. 16 is an enlarged front view showing a mechanical chassis and each member arranged therein.

FIG. 17 is a schematic enlarged side view showing an optical pickup, a head mechanism, and a head moving lever.

FIG. 18 is an enlarged perspective view of a head moving lever.

FIG. 19 is a perspective view of a disc cartridge.

FIG. 20 is a perspective view of the disk cartridge shown in a state different from that of FIG.

FIG. 21 is an enlarged plan view showing a disc cartridge with a part cut away.

FIG. 22 is a view showing the operation together with FIGS. 23 to 36, and is a schematic enlarged side view of the disc recording / reproducing apparatus in a state before the loading operation is performed.

FIG. 23 is a schematic enlarged side view of the disc recording and / or reproducing apparatus showing a state in which the magnetic head is in the retracted position before the loading operation is performed.

FIG. 24 is a schematic enlarged cross-sectional view showing a state in which the disc cartridge inserted into the mounting recess at the mounting position is being pressed by the pressing spring.

FIG. 25 is an enlarged view showing a state before the shutter of the disc cartridge is opened.

FIG. 26 is a schematic enlarged side view of the disc recording / reproducing apparatus showing the state where the tray is moved toward the mounting position and the cover body is rotated toward the closed position following FIG. 22.

FIG. 27 is an enlarged view showing a state where the lock of the shutter of the disc cartridge is released and the shutter is held by the opening / closing lever, following FIG. 25;

FIG. 28 is a schematic enlarged side view of the disc recording / reproducing apparatus showing the state where the tray is moved toward the mounting position and the cover body is rotated to the front of the tray insertion / removal port following FIG. 26;

FIG. 29 is an enlarged view showing a state where the shutter of the disc cartridge is being opened, following FIG. 27;

FIG. 30 is a schematic enlarged side view of the disc recording / reproducing apparatus showing the state where the tray is moved toward the mounting position and the cover body is moved rearward, following FIG. 28;

FIG. 31 is an enlarged side view showing a state where the sliding pin of the moving lever is engaged with the insertion start end of the sliding groove of the drive gear.

FIG. 32 is an enlarged view showing the state where the shutter of the disc cartridge has reached the open position, following FIG. 29;

FIG. 33 is a schematic enlarged cross-sectional view showing a state where the disc cartridge is held by the holding spring attached to the tray and the holding spring of the holding member.

FIG. 34 is a schematic enlarged side view of the disc recording / reproducing apparatus showing a state in which a reproducing mode is set.

FIG. 35 is a schematic enlarged side view of the disc recording / reproducing apparatus showing a state where a recording mode is set.

FIG. 36 is a schematic enlarged side view of the disc recording / reproducing apparatus showing the state in which the recording mode is set, including the head mechanism.

37 is a view for explaining the relationship between the shaft provided on the arm part of the cover body and the cam gear together with FIG. 38 to FIG. 41, and this figure shows the arm part when only one shaft is provided on the arm part. FIG. 6 is a cross-sectional view showing the positional relationship between the side plate and the cam gear.

FIG. 38 is a schematic view showing the operation of the arm part when only one axis is provided in the arm part.

FIG. 39 is a cross-sectional view showing the positional relationship between the arm part, the side plate and the cam gear when the arm part is provided with two shafts.

FIG. 40 is a conceptual diagram showing a drawing method for replacing the cover cam groove.

FIG. 41 is a schematic view showing an operation of the arm part when the arm part is provided with two shafts.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Disk recording / reproducing apparatus (recording and / or reproducing apparatus), 3 ... Main body side housing, 3b ... Tray insertion / ejection opening, 7 ... Guide hole (guide part), 8 ... Guide hole (guide part), 11 ... Cover body , 12 ... cover body, 15 ... arm part, 15b ... cam shaft, 15c ... guided shaft, 16 ... cam gear, 17 ... cover cam groove (cam part), 19 ... moving lever, 19b ...
Rack, 19c ... toothless portion, 19e ... sliding pin, 20 ... tray, 20a ... mounting recess, 21c ... supported projection (supported portion), 21d ... guided pin (guided portion), 32 ... presser Spring (holding part), 33 ... Shutter opening / closing mechanism, 47 ...
Pressing member, 50 ... Drive gear, 51 ... Sliding groove, 51a ...
Insertion start end portion, 54 ... Disc table (recording medium mounting portion), 55 ... Optical pickup (signal reproducing portion), 59 ...
Magnetic head (signal recording unit), 60 ... Head moving lever, 100 ... Disk cartridge (recording medium cartridge), 101 ... Case body, 102 ... Magneto-optical disk (recording medium), 103 ... Shutter

Claims (14)

[Claims] 1. A recording medium cartridge in which a shutter is slidably supported by a case body in which a recording medium is housed is held by a tray that moves relative to a main body side casing, and the tray is moved. When the recording medium is loaded, the recording medium is mounted in the recording medium mounting portion in a state where the recording medium cartridge is mounted in the main body side housing and the main surface of the recording medium faces in a substantially horizontal direction. A recording medium loading mechanism that moves the tray between the tray and the mounting position, and a shutter opening / closing mechanism that opens and closes the shutter of the recording medium cartridge is provided in the tray, and the tray moves from the mounting position to the mounting position. When the shutter is opened and closed, the shutter of the recording medium cartridge is opened and the tray is placed from the mounting position. The shutter opening / closing mechanism closes the shutter of the recording medium cartridge when the recording medium cartridge is moved toward the tray, so that the main surface of the recording medium cartridge placed on the tray in the placing position faces the substantially vertical direction, and substantially the entire tray is A recording medium loading mechanism characterized by being pulled out from the main body side casing. 2. A guide part is formed on the main body side casing, and a moving lever is formed on the main body side casing and is movably supported in the main body side casing so as to be slidably supported on the guide part. The guided portion is provided at one end of the tray, and the supported portion rotatably supported by the moving lever is provided at the other end of the tray, and the guided portion is guided by the movement of the moving lever in the arc direction. The recording medium loading mechanism according to claim 1, wherein the tray is moved between the mounting position and the mounting position by being guided by the recording medium loading mechanism. 3. The tray is moved between a mounting position and a mounting position through a tray insertion / removal opening formed in the main body side housing, is rotatably supported by the main body side housing, and is driven by a drive motor. A drive gear that transmits a driving force to rotate, a cam gear that is rotatably supported by the main body side housing and that rotates by meshing with the drive gear, and a cam gear that moves in the opposite direction depending on the rotation direction of the cam gear. A cover body that is moved in a direction that opens the tray insertion / removal opening when the tray is moved toward the loading position and that is moved in a direction that closes the tray insertion / removal opening when the tray is moved toward the mounting position. 3. The recording medium loadin according to claim 2, wherein the moving lever is provided with a rack that meshes with the drive gear, and the moving lever is moved in an arc direction by the rotation of the drive gear. Mechanism. 4. The recording medium mounted in the recording medium mounting portion is moved in one direction or another direction opposite to the one direction in accordance with the rotation direction of the cam gear, and the one direction or 4. The recording medium loading according to claim 3, further comprising a head moving lever that moves a signal recording unit that records an information signal on the recording medium in a direction in which the recording medium is moved toward and away from the recording medium by moving in another direction. mechanism. 5. When the moving lever is formed with a toothless portion which is continuous with the rack and is not formed with rack teeth, and a sliding groove is formed in the drive gear, the moving lever is moved in one direction in an arc direction. The moving lever is provided with a sliding pin that is inserted into the sliding groove of the drive gear, and the sliding pin is inserted and slid while the driving gear is rotating and the moving lever is moving. The insertion start end having a shape corresponding to the movement trajectory of the sliding pin to be slid is formed in the sliding groove, and after the sliding pin is inserted into the insertion start end of the sliding groove, the drive gear and the gear of the moving lever 4. The recording medium loading mechanism according to claim 3, wherein the drive gear is positioned so as to correspond to the toothless portion of the moving lever by releasing the meshing with the portion. 6. A cam portion is formed on the cam gear, a guide portion is formed on a main body side casing, and a cover body is composed of a cover main body and an arm portion protruding from the cover main body. 4. The recording according to claim 3, further comprising: a cam shaft projecting in opposite directions from the position and slidably engaged with the cam portion; and a guided shaft slidably engaged with the guide portion. Media loading mechanism. 7. A recording medium cartridge in which a shutter is slidably supported by a case body in which a recording medium is housed is held by a tray that moves with respect to a main body side casing, and the tray is moved. When the recording medium is loaded, the recording medium is mounted in the recording medium mounting portion in a state where the recording medium cartridge is mounted in the main body side housing and the main surface of the recording medium faces in a substantially horizontal direction. A recording and / or reproducing device in which the tray is moved between the recording medium cartridge and the recording medium, and the information signal is recorded and / or reproduced by the signal recording unit and / or the signal reproducing unit in the recording medium cartridge. The tray is provided with a shutter opening / closing mechanism for opening / closing the shutter of the recording medium cartridge, and the tray is moved from the mounting position to the mounting position. The shutter opening / closing mechanism opens the shutter of the recording medium cartridge and the shutter opening / closing mechanism closes the shutter of the recording medium cartridge when the tray is moved from the mounting position to the loading position. In the recording and / or reproducing apparatus, the main surface of the recording medium cartridge placed on the tray is oriented in a substantially vertical direction and substantially the entire tray is pulled out from the main body side casing. 8. A guide part is formed on the main body side casing, and a moving lever is formed on the main body side casing and is movably supported on the main body side casing so as to be slidably supported on the guide part. The guided portion is provided at one end of the tray, and the supported portion rotatably supported by the moving lever is provided at the other end of the tray, and the guided portion is guided by the movement of the moving lever in the arc direction. The recording and / or reproducing apparatus according to claim 7, wherein the tray is moved between a mounting position and a mounting position by being guided by. 9. The tray is moved between a mounting position and a mounting position through a tray insertion / removal opening formed in the main body side housing, is rotatably supported by the main body side housing, and is driven by a drive motor. A drive gear that transmits a driving force to rotate, a cam gear that is rotatably supported by the main body side housing and that rotates by meshing with the drive gear, and a cam gear that moves in the opposite direction depending on the rotation direction of the cam gear. A cover body that is moved in a direction that opens the tray insertion / removal opening when the tray is moved toward the loading position and that is moved in a direction that closes the tray insertion / removal opening when the tray is moved toward the mounting position. 9. The recording and / or recording device according to claim 8, wherein the moving lever is provided with a rack that meshes with the drive gear, and the moving lever is moved in an arc direction by rotation of the drive gear. Playback Location. 10. The recording medium mounted in the recording medium mounting portion is moved in one direction or another direction opposite to the one direction according to the rotation direction of the cam gear, and the one direction or 10. The recording and / or recording device according to claim 9, further comprising a head moving lever that moves a signal recording unit that records an information signal on the recording medium in a direction in which the signal recording unit moves in another direction so as to move toward and away from the recording medium. Or a playback device. 11. A holding concave portion for forming a recording medium cartridge in the tray by inserting and placing the recording medium cartridge therein, and a holding portion for holding and holding one end edge of the recording medium cartridge inserted in the placing concave portion at one end of the tray. The recording and / or reproducing apparatus according to claim 7, wherein the recording and / or reproducing apparatus is provided in a section. 12. A mounting recess for inserting and mounting a recording medium cartridge in the tray is formed, and is supported movably in a direction projecting into the mounting recess and a direction retracting from the mounting recess. Along with the operation of the shutter opening / closing mechanism when the tray is moved from the mounting position to the mounting position, the tray is moved in the direction in which the tray is projected into the mounting recess, and the recording medium cartridge inserted in the mounting recess is moved. The recording and / or reproducing apparatus according to claim 7, wherein the tray is provided with a pressing member that presses and holds one end edge. 13. When the moving lever is formed with a toothless portion which is continuous with the rack and in which rack teeth are not formed, and a sliding groove is formed in the drive gear, the moving lever is moved in one direction in an arc direction. The moving lever is provided with a sliding pin that is inserted into the sliding groove of the drive gear, and the sliding pin is inserted and slid while the driving gear is rotating and the moving lever is moving. The insertion start end having a shape corresponding to the movement trajectory of the sliding pin to be slid is formed in the sliding groove, and after the sliding pin is inserted into the insertion start end of the sliding groove, the drive gear and the gear of the moving lever 10. The recording and / or reproducing apparatus according to claim 9, wherein the drive gear is positioned so as to correspond to the toothless portion of the moving lever by releasing the meshing with the portion. 14. A cam portion is formed on the cam gear, a guide portion is formed on a main body side casing, and a cover body is composed of a cover main body and an arm portion protruding from the cover main body. 10. The recording according to claim 9, further comprising: a cam shaft projecting in opposite directions from the position and slidably engaged with the cam portion; and a guided shaft slidably engaged with the guide portion. And / or a playback device.