JP2000113548A - Manufacture of shaft part and holder device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the fitting of a holder and to reduce a manufacturing cost. SOLUTION: A pair of shaft parts 73, 74 provided on either of a base 36 and the holder 23, with which the holder 23 is rotatably supported, and engage holes 71, 72, which are engaged with the shaft parts 73, 74, respectively, provided on either of the base 36 and holder 23, are formed. Evaginating parts 78a, 78b are formed on the short side orthogonally opposited in the longitudinal direction and facing to each other on either of the shaft parts 73, 74. Either thereof is provided with a supporting mechanism, in which a notched part 75 continuing to the engage hole 71 is formed. This supporting mechanism is constituted to allow the holder 23 to be rotatably supported with the base 36 by making the other of the engaged holes 71, 72 engaged with the other of a pair of the shaft parts 73, 74 and engaging one of the engaged hole 71 with one of a pair of the shaft parts 73, 74 via the notched part 75.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a shaft for rotatably supporting a rotating member such as a holder provided in a disk recording and / or reproducing apparatus, and to rotate the holder using the shaft. The present invention relates to a holder device for supporting the holder device.

[0002]

2. Description of the Related Art Conventionally, a disk recording and / or reproducing apparatus using a disk cartridge containing a disk-shaped recording medium used as an information signal recording medium such as an optical disk or a magneto-optical disk has been used.

Some disc recording and / or reproducing apparatuses of this type include a holder into which a disc cartridge is inserted and held in order to hold the disc cartridge at a position for recording and / or reproducing information signals. The holder pivots on a base of the apparatus main body so as to pivot between a lower position where the disk cartridge is mounted at the recording and / or reproducing position and an upper position where the disk cartridge can be inserted and removed. Supported as possible.

[0004] In order to rotatably support the holder on the base, a support shaft is provided on the base, and a support hole provided in the holder is pivotally supported on the support shaft.

[0005]

As a support mechanism for rotatably supporting the holder on the base, a support shaft formed by cutting a metal material on a mounting piece provided on the base is formed by caulking or the like. The support shaft is used to insert and support a pivot hole provided in a holder on the support shaft.

As described above, in the support mechanism using the support shaft formed independently of the base, not only the number of parts increases, but also it is difficult to attach the support shaft to the holder. Also, the mounting operation for supporting the holder on the support shaft is complicated, and it becomes difficult to mount the holder. Furthermore, the increase in the number of parts increases the manufacturing cost.

[0007] In order to solve such a problem, the present applicant has proposed a holder device as described in Japanese Patent Application Laid-Open No. H10-40627. According to the holder device described in this publication, the number of components is reduced, the work of attaching the holder to the support shaft provided on the base becomes easy, and the manufacturing cost can be reduced.

The present invention is a further improvement of the holder device described in the above-mentioned publication, and is more easily manufactured, the holder can be easily mounted, and the manufacturing cost can be reduced. An object of the present invention is to provide a method of manufacturing a shaft and a holder device using the shaft formed by the manufacturing method.

[0009]

SUMMARY OF THE INVENTION A method of manufacturing a shaft according to the present invention, which is proposed to achieve the above-mentioned object, comprises a substrate having a rectangular cross-section and having a rectangular cross section. A predetermined pressure is applied by using a pair of dies having an arc-shaped molding surface from the short side to form a bulging portion on the short side of the base material. At this time, the tip of the bulging portion is formed as an arc surface.

A holder device according to the present invention includes a holder for holding a disk cartridge, a base on which the holder is rotatably supported, and a pair of shafts provided on one of the base and the holder. An engagement hole is formed in the other of the base and the holder and is engaged with the shaft, and one of the shafts is formed with a bulging portion on opposite short sides orthogonal to the longitudinal direction. And a support mechanism provided with a notch portion continuous with the engagement hole in one of the receiving portions. This support mechanism rotates the holder to the base by engaging the other of the pair of shafts with the other of the engagement holes and engaging one of the pair of shafts with one of the engagement holes via the cutout. Make it movably supported.

The holder device further includes a regulating mechanism for regulating the amount of rotation of the holder with respect to the base. This regulating mechanism includes an engaging piece provided on one of the holder and the base, and a locking portion provided on the other and relatively engaging with the engaging piece.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A holder device according to the present invention and a disk recording / reproducing apparatus using the holder device will be described below with reference to the drawings.

First, a description will be given of a disk cartridge inserted and held in a holder device according to the present invention. As shown in FIGS. An optical disk 5 capable of recording information signals is rotatably housed in the formed cartridge body 4. Cartridge body 4
As shown in FIG. 2, a central opening 7 is provided in a central portion on the lower side of the optical disk 5 so that a disk hub 6 attached to the central portion of the optical disk 5 accommodated in the cartridge body 4 faces outward. . Further, at opposite positions on the upper and lower surfaces of the cartridge main body 4, recording is performed in which a part of a signal recording area formed on the main surface of the optical disk 5 housed in the cartridge main body 4 faces outward over the inner and outer peripheries. An opening 8 for recording and an opening 9 for recording / reproducing are provided. These openings 8 and 9 are located at the center in the left-right direction of the cartridge body 4 and are formed from the vicinity of the center of the cartridge body 4 to one side.

A shutter member 10 for opening and closing a recording opening 8 and a recording / reproducing opening 9 is movably attached to the cartridge body 4. The shutter member 10 is formed by bending a thin metal plate into a U-shaped cross section, is attached so as to fit from one side of the cartridge body 4, and is moved along the one side of the cartridge body 4. The shutter member 10 has a plurality of openings 8,
When the cartridge 9 is in the closed position, the shutter 9 is locked by the shutter lock member 11 provided in the cartridge body 4 and the movement is restricted. Then, the shutter member 10
When the disc cartridge 1 is inserted into the holder device, the shutter lock member 11 locks the shutter release member provided on the holder device side which enters the shutter release member entry groove 12 formed on one side surface of the cartridge body 4. Is released, and the moving operation is performed in a direction to open the openings 8 and 9.

Shutter unit 1 for closing recording opening 8 and recording / reproducing opening 9 of shutter member 10, respectively.
An engagement hole 13 is provided at the center of the connecting piece 10c for connecting Oa and 10b with a movement restricting member provided on the holder device side.

The shutter opening member entrance groove 12 is formed such that a side surface orthogonal to one side surface of the cartridge body 4 in which the shutter member 10 moves is an open end.

The disk cartridge 1 thus formed is inserted into the holder device with the side of the shutter opening member entry groove 12 facing the open end facing the insertion end.

On the lower surface side of the cartridge body 4,
As shown in FIG. 2, a pair of positioning holes 14 and 15 are provided on both sides of the recording / reproducing opening 9 and engage with positioning pins provided on the disk recording / reproducing apparatus. Further, FIG.
As shown in FIG. 1, an erroneous recording detection hole 16 for identifying whether or not an information signal can be recorded on the optical disk 5 and an erroneous recording preventing member 17 for opening and closing the erroneous recording detection 16 are provided.

As shown in FIGS. 3, 4, and 5, a disk recording / reproducing apparatus to which the holder device according to the present invention in which the disk cartridge 1 constructed as described above is inserted and held is applied. A disk rotation drive mechanism for rotating an optical disk 5 capable of recording information signals stored in a disk cartridge 1 mounted on the apparatus,
An apparatus main body 21 containing an optical pickup device and the like constituting a recording / reproducing mechanism for recording / reproducing information signals on / from the optical disk 5 rotated and driven by the disk rotation driving mechanism, and an upper surface side of the apparatus main body 21 A lid 22 for opening and closing the cartridge mounting portion, and a disc cartridge which is located between the apparatus main body 21 and the lid 22 and is rotated and operated in conjunction with the lid 22 to be mounted on the cartridge mounting portion formed on the apparatus main body 21 side. And a holder 23 for loading the data.

The apparatus main body 21 is formed as a substantially rectangular casing, and as shown in FIGS. 3 and 4, the lid 2 is locked on the front side at a position where the upper side of the apparatus main body 21 is closed.
2, a cover opening operation button 24 for unlocking the lock 2, a recording mode selection button 25 for selecting a recording mode, a remote controller connection unit 26 to which a remote controller for remotely operating the disk recording / reproducing apparatus is connected, and the like. . As shown in FIG. 4, an input / output jack 27 for connecting an external device is provided on one side of the apparatus main body 21.
28 and a microphone connection jack section 29 are provided. Further, on the back side of the apparatus main body 21, a battery housing section 30 for housing a battery for supplying power for driving the disk recording / reproducing apparatus is provided. The insertion / removal of a battery into / from the battery storage section 30 is performed via a battery insertion / removal opening provided on the other side of the apparatus main body 21. The battery insertion / removal opening is opened and closed by a battery lid 32 attached to the apparatus main body 21.

As shown in FIG. 3, a plurality of operation mode selection buttons 33 for selecting an operation mode of the disk recording / reproducing apparatus, and a display showing the contents of information signals to be recorded / reproduced are provided on the upper surface side of the lid 22. A display unit 34 using a liquid crystal display panel for displaying the operation status and the like is provided.

Although not shown, the lid 22 is provided on the main body 21 of the apparatus.
The rotatable support member rotatably supported on the rear side of the base unit fixes the base end side to be rotatably attached to the apparatus main body 21, and opens and closes the upper side of the apparatus main body 21. In addition, a rotation arm 35 is connected between the middle part of the side of the lid 22 and the apparatus main body 21 as shown in FIG. 5 in order to realize stable rotation of the lid 22.

A base 36 to which a disk rotation drive mechanism and an optical pickup device constituting a recording / reproducing unit of the disk recording / reproducing apparatus are mounted is arranged inside the apparatus main body 21. As shown in FIGS. 6 and 7, the base 36 is formed in a flat rectangular shape having a size large enough to be housed in the apparatus main body 21 using a highly rigid metal plate.

On the upper surface side of the base 36, there is provided a cartridge mounting portion 37 in which the disk cartridge 1 used in the disk recording / reproducing apparatus is positioned and mounted. Base 36 on which cartridge mounting section 37 is formed
As shown in FIG. 6, a pair of positioning pins 38 and 39 which are engaged with positioning holes 14 and 15 provided in the disk cartridge 1 project from the upper surface of the disk cartridge 1. The mounting position of the disk cartridge 1 is determined by engaging the positioning holes 14 and 15 with the pair of positioning pins 38 and 39, and the disk cartridge 1 is mounted on the cartridge mounting portion 37. On the upper surface side of the base 36, a cartridge detection switch 40 for detecting that the disk cartridge 1 is mounted on the cartridge mounting portion 37 is provided.

As shown in FIG. 6, a disk rotation drive mechanism 41 for rotating the optical disk 5 housed in the disk cartridge 1 mounted on the cartridge mounting portion 37 is attached to a substantially central portion of the base 36. . As shown in FIGS. 6 and 7, the disc rotation drive mechanism 41
A spindle motor 42 and a disk table 44 integrally attached to the spindle 43 of the spindle motor 42
And As shown in FIG. 6, the spindle motor 42 projects the spindle 43 to the upper surface side of the base 36, and as shown in FIG.
Attached through. Disk table 44
As shown in FIG. 6, is integrally attached to the distal end side of a spindle 43 protruding from the upper surface side of the base 36.

When the disk cartridge 1 is mounted on the cartridge mounting portion 37, the optical disk 5 stored in the disk cartridge 1
The disk hub 6 is placed on the disk table 44, and the disk hub 6 is attracted by a magnet provided on the disk table 44 side so that centering is achieved and the disk hub 6 is clamped so as to be rotatable integrally with the disk table 44.

The base 36 is provided with an optical pickup device 48 which is clamped to the disk table 44 and emits a light beam for scanning a signal recording area of the optical disk 5 which is driven to rotate integrally with the disk table 44. . The optical pickup device 48 includes a semiconductor laser as a light source that emits a light beam that scans a signal recording area of the optical disk 5, a light detection element that detects a return light beam reflected from the optical disk 5, and light emitted from the semiconductor laser. An optical block 49 having a built-in optical element such as a beam splitter for separating a light beam and a return light beam reflected from the optical disk; And the optical disk 5 via the objective lens 50
The objective lens 50 is moved in the optical axis direction and the optical axis direction of the objective lens 50 so that the light beam irradiated on the optical disk is focused on the signal recording area of the optical disk and irradiated, and follows the recording track formed on the optical disk. A two-axis actuator for driving displacement in a plane direction orthogonal to the actuator.

As shown in FIG. 6, the optical pickup device 48 includes a pickup opening 51 formed in the base 36.
The objective lens 50 is disposed on the lower surface side of the base 36 such that the objective lens 50 faces the main surface of the optical disk 5 on the disk table 44 via the. This optical pickup device 48
As shown in FIG. 7, a shaft insertion hole 52 provided at one end of the optical block 49 is inserted into a guide shaft 53 attached to the lower surface of the base 36, and a guide support 54 formed at the other end of the optical block 49. Is engaged with a guide piece 55 formed by bending one side of the base 36 in parallel with the guide shaft 53, and is supported so as to be movable toward and away from the disk table 44.

The optical pickup device 48 is fed by a pickup feed mechanism 56 provided on the lower surface side of the base 36 to thereby guide the guide shaft 53 and the guide piece 5.
5 and is moved in a direction approaching and separating from the disk table 44. The pickup feed mechanism 56
It includes a feed screw 57 attached to the lower surface of the base 36 in parallel with the guide shaft 53, and a feed motor 58 for driving the feed screw 57 to rotate. The feed screw 57 is connected to a drive shaft of a feed motor 58 via a connection gear mechanism 59. The optical pickup device 48 is connected to a pickup feed mechanism 56 by engaging a screw engagement piece 60 attached to one end of the optical block 49 with a feed screw 57. Here, when the feed motor 58 of the pickup feed mechanism 56 is driven to rotate the feed screw 57, the optical pickup device 48 is moved with the screw engaging piece 60 being guided by the thread of the feed screw 57. Thus, the sheet is fed in the directions of arrows A and B in FIG.

Since the optical pickup device 48 is supported by the guide shaft 53 and the guide piece 55 such that the optical axis of the objective lens 50 is located on the center line of the disk table 44, the light is irradiated through the objective lens 50. With this light beam, the signal recording area of the optical disk 5 can be accurately scanned over the inner and outer circumferences.

As shown in FIG. 8, the holder 23 for mounting the disk cartridge 1 on the cartridge mounting portion 37 is rotatably mounted on the upper surface of the base 36 where the cartridge mounting portion 37 is formed. Holder 23
Is formed by bending a thin metal plate such as stainless steel, and is formed to have a size for storing and holding the disk cartridge 1. As shown in FIGS. 8 and 9, the holder 23 has a top plate portion 62 formed in a substantially rectangular shape having a size sufficient to cover the upper surface side of the disk cartridge 1. The first and second cartridge holding portions 63 supporting both sides of the disc cartridge 1 into which the holder 23 is inserted,
64 are provided. These cartridge holders 6
Reference numerals 3 and 64 denote side walls 65 and 66 of the holder 23 formed by vertically bending both sides of the top plate 62,
The cartridge support pieces 67 and 68 are formed by bending the distal ends of the cartridges 5 and 66 so as to be parallel to the top plate 62.

An open portion between the first and second cartridge holding portions 63 and 64 on the front surface orthogonal to both sides where the first and second cartridge holding portions 63 and 64 of the holder 23 are formed. Is made a cartridge insertion / removal opening 69,
The disc cartridge 1 is connected to the first and second cartridge holding portions 63 and 64 through the cartridge insertion / removal opening 69.
It is inserted in between. At this time, the disc cartridge 1 is inserted into the holder 23 with the surface facing the open end of the shutter opening member entry groove 12 orthogonal to one side surface on which the shutter member 11 is attached facing the insertion end. Holder 23
The disc cartridge 1 inserted into the cartridge holder 1 has one side face on which the shutter member 11 is attached, and the other side face opposing the one side face has the first and second cartridge holding portions 63, 63.
64 supported.

The tip of the cartridge supporting piece 68 constituting the second cartridge holding portion 64 is provided with a holder 2.
A switch insertion hole 70 is provided for allowing the cartridge detection switch 40 provided on the base 36 to project into the holder 23 when the cartridge 3 is rotated toward the cartridge mounting portion 37.

As shown in FIGS. 10 and 11, the holder 23 has first and second perforations formed on the base end sides of the side walls 65 and 66 constituting the first and second cartridge holding portions 63 and 64. As shown in FIG. 6, the shaft engaging holes 71 and 72 are engaged with the first and second shaft portions 73 and 74 formed on both sides of the base 36 on the base end side, thereby turning the base 36. Movably supported.

Here, a notch 75 communicating with the first shaft engaging hole 71 is provided on the base end side of the side wall 65 in which the first shaft engaging hole 71 is formed. When the holder 23 is attached to the base 36, the notch 75 is
3 for insertion and engagement with the first shaft insertion hole 71. The notch 75 is formed so as to be inclined from the first shaft engaging hole 71 toward the top plate 62.

The first shaft portion 73 with which the first shaft engaging hole 71 is engaged has a rising piece formed on one side of the base end side of the base 36 as shown in FIGS. 7
6 is formed at the distal end of a bent portion 77 formed by bending the distal end side inward of the base 36. The first shaft portion 73 is, as shown in FIGS.
Bulges 78a and 78b whose peripheral surfaces are arc-shaped are formed on opposing short sides that are orthogonal to the longitudinal direction perpendicular to the vertical direction. The first shaft portion 73, the bulging portion 78a, 78b is smaller than the width W ₂ of the notch 75 which communicates the width W ₁ of the short side, which is formed on the first shaft engaging hole 71, longitudinal The width W ₃ in the direction is formed slightly smaller than the inner diameter R ₁ of the first shaft engaging hole 71 and larger than the width W _{2 of the} cutout portion 75. By forming the first shaft portion 73 in this manner, in order to engage the first shaft engagement hole 71 from a direction orthogonal to the first shaft portion 73, the cutout portion 75 must be formed by the bulging portion 78a. After the first shaft portion 73 is engaged with the first shaft engaging hole 71 through the cutout portion 75, the holder 23 is turned toward the base 36. When the notch 75 moves in the longitudinal direction of the first shaft 73, the first shaft engaging hole 71 is prevented from coming off from the first shaft 73.

The first shaft portion 73 thus configured is
It is manufactured through the following steps.

First, on one side of the back side of the base 36, FIG.
As shown in FIG. 4, a substantially L-shaped rising piece 76 provided with a protruding piece 80 having a rectangular cross-sectional shape whose longitudinal direction is the height direction serving as the base material of the first shaft portion 73 is provided on the distal end side. Form. Next, as shown in FIG. 15, the end of the rising piece 76 on which the protruding piece 80 is provided is bent 90 ° toward the inside of the base 36. Next, as shown in FIG. 16, a pair of dies 8 having molding surfaces 81a and 82a as arc surfaces are formed from opposite short sides orthogonal to the longitudinal direction of the protruding piece 80.
The first shaft portion 73 is formed by forming a bulged portion 78a, 78b having an arcuate peripheral surface on the short side portion of the protruding piece 80 by applying a constant pressure and deforming the protruding piece 80. You.

As described above, the first shaft portion 73 is
6 is formed integrally by pressing and forming the protruding piece 80 provided at the tip of the rising piece 76 formed by bending a part of the part 6, so that it is not necessary to attach an independently formed shaft or the like, and the number of parts is reduced. The shaft can be easily formed. Further, since the peripheral surfaces of the bulging portions 78a and 78b are formed as circular arc surfaces, when the first shaft portion 73 is engaged with the circular first shaft engaging hole 71, the shaft engaging hole 71 Smooth rotation is guaranteed.

The second shaft engaging hole 72 engages with the second
As shown in FIG. 6, the shaft portion 74 is formed by bending a part of the leading end of a rising piece 83 formed on the other side of the base end side of the base 36 toward the outside of the base 36. Have been. The second shaft portion 74 is
The shaft engaging hole 72 is formed to have a diameter enough to be inserted. Similarly to the first shaft portion 73, the second shaft portion 74 is formed such that the opposing surfaces of the protruding pieces having a rectangular cross-section provided on the tip end side of the rising piece 83 are formed into arc-shaped surfaces. By using a pair of molds described above and applying a constant pressure to deform, a bulged portion having an arcuate peripheral surface may be provided. By forming such a bulge, the second
The smooth rotation of the circular second shaft engaging hole 72 that engages with the shaft 74 is assured.

The first and second shaft engaging holes 71, 72 formed as described above, and the first and second shaft portions 73, 74 with which the shaft engaging holes 71, 72 engage. In order to rotatably support the holder 23 on the base 36 using a supporting mechanism, the holder 23 is disposed substantially perpendicular to the base 36 as shown in FIG. At this time, the first shaft engaging hole 71
Notch 75 communicating with the first shaft portion 73 is a bulged portion 78a of the first shaft portion 73.
Are formed so as to be opposed to the short side on which the first shaft portion 73 is formed. Here, the second shaft engaging hole 72 is inserted through the second shaft portion 74, and then the first shaft engaging hole 71 is engaged with the first shaft portion 73 through the notch 75. , Holder 23 includes first and second shaft portions 73, 7
4 is supported by the base 36 in a rotatable state.

After the first and second shaft engaging holes 71 and 72 are engaged with the first and second shaft portions 73 and 74, respectively, and the holder 23 is rotated toward the base 36, FIG. As shown, the notch 75 is formed by the bulging portions 78 a
8b is opposed in the longitudinal direction orthogonal to the short side on which the first shaft engaging hole 71 is formed. Holes 71, 72
Is kept engaged with the first and second shaft portions 73 and 74.

The holder 23, when it is rotated in the arrow C ₁ direction in FIG. 18 to the state shown in FIG. 18 to the base 36 side, of the side wall 65 of notch 75 is formed a base end portion of the base 36 A movable locking piece 85 formed upright on the base end side
Of the first and second shaft portions 73,
The movement of the shaft 74 in the axial direction is restricted, and the first and second shafts 73 and 74 are prevented from coming off.

By the way, the holder 23, when it is rotated in the arrow C ₁ direction until the state shown in FIG. 18 to the base 36 side, the base end portion formed with the engaging piece 86 is the base 36 side of the side wall 65 engages the engaging portion 87 provided on, a state in which rotation is restricted to roller separation 18 in the arrow C ₂ direction from the base 36. When the engagement piece 86 is in the state of being engaged with the locking portion 87, the holder 23 is in a state of being rotated by a fixed amount from the base 36 about the first and second shaft portions 73 and 74, and
As shown in FIG. 5, the cartridge insertion / removal opening 69 on the front side faces the outside of the apparatus main body 21, and the disk cartridge 1 is opened.
In a position that allows insertion and removal of the

The locking portion 87 when the holder 23 is rotated in the arrow C ₁ direction in FIG 18, the engagement piece 86 of the holder 23 side
The engagement was locked, only those regulating the Figure 18 in a further rotated in the arrow C ₂ direction of the holder 23, the holder 23 is 18
Direction of rotation toward in Figure 18 the arrow C ₁ direction of the base 36 side from the manner shown in is allowed. Holder 23, around the first and second shaft portions 73 and 74 are rotated in the arrow C ₁ direction in FIG 18, it is rotated to a position to be parallel to the base 36 as shown in FIG. 19. That is, the holder 23
Is a raised position shown in FIG. 18 separated from the base 36,
It is rotatable between the lower position shown in FIG.

The state shown in FIG. 19 in which the holder 23 has been turned to the lowered position close to the base 36 is the holder 2
The disk cartridge 1 inserted and held in the base 3
In this state, the optical disc 5 housed in the disc cartridge 1 is mounted on the disc rotation drive mechanism 41 and rotationally driven to record and reproduce information signals. State.

The engagement piece 86 provided on the holder 23 is provided at the distal end side of the elastic displacement piece 88 formed by cutting a notch 88a at the base end side of the side wall 65 constituting the first cartridge holding portion 63. It is formed by folding a part of the holder 23 outward. The locking portion 87 for locking the engaging piece 86 is formed by cutting a protruding piece formed by providing a cut in the center of a rising piece 89 formed on one side of the base 36 and inward of the base 36. Is formed.

As shown in FIGS. 5 and 18, the holder 23 rotatably mounted on the base 36 disposed in the apparatus main body 21 rotates in conjunction with the lid 22 as shown in FIGS.
The rotation interlocking piece 90 formed on the front end side of the side wall 65 constituting the first cartridge holding portion 63 is engaged with the engagement hole 107 formed in the connection piece 106 provided on one side of the front end side of the lid 22. Are engaged. Thus, the rotation interlocking piece 90 is attached to the lid 2.
By engaging the connecting piece 106 on the second side, the holder 23
Can rotate in conjunction with the rotation of the lid 22.

Here, the connecting piece 10 with which the connecting piece 91 is engaged
6 is formed to have an opening larger than the thickness of the connecting piece 91,
It is adapted to be rotatable further 18 arrow C ₂ direction to be separated from the holder 23 in the range of the engaging hole 107. In this manner, the lid 22 is rotatable in a direction further away from the holder 23, so that the holder 23
Even when the holder 23 is rotated to a position where the disk cartridge 1 can be inserted and removed, the lid 22 is further, by rotating in the arrow C ₂ direction in FIG. 18, it is possible to widely open the cartridge insertion slot 69 that is configured on the front side of the holder 23. When the cartridge insertion / removal opening 69 is largely opened, the disk cartridge 1 can be reliably inserted / removed.

By the way, the holder 2 has the holder 2
When the disc cartridge 1 is turned to a position where the disc cartridge 1 can be inserted and removed when the disc cartridge 1 is lifted as shown in FIG. A pair of first and second lid rotation urging plates 91, 9 constituting a first elastic displacement portion for causing
2 are provided. As shown in FIG. 9, the first and second lid rotating urging plates 91 and 92 are formed by forming U-shaped cuts 91 a and 92 a in the top plate 62 of the holder 23. It is formed integrally with the part 62. First
As shown in FIG. 9, the second lid body urging plates 91 and 92 are connected to the first and second cartridge holding parts 63 and 64, respectively, with the central part of the top plate part 62 as a connecting part. It is formed to extend toward. These first and second
The lid rotation urging plates 91 and 92 are configured to press and urge the inner surface side of the lid 22 disposed so as to cover the top plate 62.
The free end side is displaced so as to protrude above the top plate 62. That is, the first and second lid rotating urging plates 9
As shown in FIG. 20, the reference numerals 1 and 92 are formed so as to be inclined so as to protrude upward from the connecting portion side to the top plate portion 62 toward the free end side. First and second lid rotation urging plates 9
Lid pressing projections 93 and 94 are formed on the free end sides of the lids 1 and 92 so as to protrude upward to reliably press the inner surface of the lid 22.

The first and second lid rotating urging plates 9
First and second cartridge pressing pieces 95 and 96 constituting a second elastic displacement portion are formed integrally with the first and second cartridges 1 and 92, respectively. These cartridge pressing pieces 95 and 96 are formed by branching off a part of the first and second lid rotation urging plates 91 and 92, and these lid rotation urging plates 9 and 92 are formed.
The free ends of the first and the second cuts 95 toward the base end.
a, 95b are formed. When the holder 23 holding the disk cartridge 1 is rotated together with the lid 22 to the recording / reproducing position close to the base 36 as shown in FIG. 20 is pressed and supported on the cartridge mounting portion 37 side.
As shown in the figure, the first and second lid rotation urging plates 91, 9
2 is displaced toward the holder 23 side. That is, the first and second cartridge pressing pieces 95, 96
As shown in FIG. 21, the lid 22 is pivoted to the apparatus main body 21 at the closing position and the holder 23 is pivoted to the recording / reproducing position. As shown in FIG. , 92
Is displaced toward the holder 23 so as to enter the holder 23 when the cover 22 is pressed by the lid 22 and is elastically displaced toward the top plate portion 62.
Are formed with different initial displacement amounts in the thickness direction of the holder 23 with respect to the lid rotation urging plates 91 and 92.

The first and second cartridge pressing pieces 95,
Pressing projections 97 and 98 projecting toward the holder 23 are also formed on the free end side of the cartridge 96 so as to reliably press the upper surface side of the disk cartridge 1 mounted on the cartridge mounting portion 37. .

As shown in FIGS. 9 and 10, a disc cartridge 1 inserted into the holder 23 is provided at a substantially central portion in the longitudinal direction of the side wall 65 constituting the first cartridge holding portion 63 of the holder 23. The cartridge main body is inserted into the shutter opening member entrance groove 12 formed on one side surface, the shutter lock member 11 is elastically deformed to unlock the shutter member 10, and the shutter member 10 is inserted inside the holder 23. A shutter opening member 99 that moves in a direction to open the recording opening 8 and the recording / reproducing opening 9 by moving relative to the shutter 4 is formed inwardly of the holder 23 by folding.

The position of the side wall 65 constituting the first cartridge holding portion 63 on the cartridge insertion / removal opening 69 side from the position where the shutter opening member 99 is provided is shown in FIGS.
As shown in FIG. 5, the shutter member 10 attached to the disk cartridge 1 inserted into the holder 23 is held at a position where the recording and reproducing openings 8 and 9 are opened.
When the disc cartridge 1 is ejected from the holder 23, the shutter member 10 is held with respect to the cartridge body 4 which is moved in a direction protruding from the holder 23, and the shutter member 10 is moved to the recording opening 8 and the recording / reproducing opening. A shutter member holding piece 101 that constitutes a third elastic displacement unit that moves the unit 9 in the closing direction is provided. The shutter member holding piece 101 is formed integrally with the side wall 65 by forming a U-shaped cut 101a in the side wall 65. FIG.
As shown in FIG. 0, the engagement is formed so as to extend from the base end of the side wall 65 toward the tip end side, and engages with the engagement hole 13 provided in the connection piece 10 c of the shutter member 10 on the tip end side. A protrusion 102 is formed. The engagement projection 102 is formed by bending a part of the shutter member holding piece 101 on the distal end side so as to protrude inward of the holder 23.

The second cartridge holding portion 6 of the holder 23
As shown in FIG. 11, an erroneous insertion preventing piece 103 for preventing erroneous insertion of the disk cartridge 1 is provided on the base end side of the side wall 66 constituting the fourth cartridge 4. This erroneous insertion prevention piece 1
03 is formed by bending a part of the side wall 66 inward of the holder 23. The erroneous insertion prevention piece 103 is used when the disc cartridge 1 is inserted into the holder 23 with the direction of 90 ° different from the normal insertion direction, for example, when the shutter member 10 is attached and one side is inserted into the holder 23. In addition, the insertion into the holder 23 is restricted to prevent erroneous insertion.

Further, as shown in FIG. 9, the top plate portion 62 of the holder 23 constitutes a fourth elastic displacement portion which presses and supports the upper surface on the insertion end side of the disk cartridge 1 inserted into the holder 23. The third cartridge pressing piece 104 is formed integrally. Third cartridge pressing piece 104
Is formed integrally with the top plate 62 so as to extend in the direction in which the disc cartridge 1 is inserted into the holder 23 by forming a U-shaped notch 104a in the top plate 62. Third cartridge pressing piece 104
Is the disk cartridge 23 inserted in the holder 23
Is pushed toward the cartridge support pieces 67 and 68 of the first and second cartridge holding portions 62 and 63, and the distal end side is displaced so as to project inward of the holder 23.
On the tip end side of the third pressing piece 104, a protruding portion 105 protruding inward of the holder 23 is provided.

As described above, the third cartridge pressing piece 104 for pressing the disk cartridge 1 inserted into the holder 23 is provided on the top plate portion 62, so that the disk cartridge 1 can be lifted from the cartridge supporting pieces 67, 68. It can be inserted into the holder 23 in a stable and prevented state. Third cartridge pressing piece 104
When the holder 23 is moved to the recording / reproducing position lowered to the base 36 side as shown in FIG.
The disc cartridge 1 held by the cartridge 3 is pressed and supported on the cartridge mounting portion 37 side.

As described above, when the holder 23 is moved to the raised position separated from the base 36 which allows the disk cartridge 1 to be inserted and removed together with the lid 22,
First and second lid rotation urging plates 91 and 92 for rotationally urging the lid 22 in a direction away from the holder 23;
The first and second cartridge pressing pieces 95 and 96 for pressing and supporting the disk cartridge 1 held in the cartridge mounting portion 67 side, the shutter member holding piece 101, and the second for pressing and supporting the disk cartridge 1 inserted in the holder 23. Since the elastically displaceable member provided on the holder 23, such as the cartridge pressing piece 104, is formed integrally with the holder 23, the number of components can be reduced, and the holder 23
Is easy to assemble.

The disk recording / reproducing apparatus according to the present invention includes:
An eject mechanism 110 is provided for ejecting the disc cartridge 1 inserted and held in the holder 23 from the holder 23 when the holder 23 is rotated from a position lowered toward the cartridge mounting portion 37 to an elevated position.
As shown in FIG. 6, the eject mechanism 110 is disposed on one side of the rear side of the base 36, and is inserted into the holder 23 rotatably supported on the base 36. Is provided with an eject lever 111 which is elastically displaced by the insertion end.

The eject lever 111 is formed using an elastically displaceable metal leaf spring. As shown in FIG. 22, a mounting piece 112 serving as a fixed end to the base 36 is provided on the base end side. . A shaft insertion hole 114 serving as a fixed end that is inserted into a caulking shaft 113 protruding from the base 36 is formed in one end of the mounting piece 112. From one side of the other end of the mounting piece 112, a shaft insertion hole 114
Pressing operation unit 11 pressed by the insertion end of disc cartridge 1 inserted into holder 23 toward the side
5 has been extended. The pressing operation portion 115 is connected to the attachment piece 112 so as to be bent vertically, and is extended so as to be inclined from the connection portion side to the attachment piece 112 toward the distal end side. That is, the pressing operation unit 115
When the eject lever 111 is mounted on the base 36, the front end is inclined from the mounting piece 112 so as to be separated from the base 36. Further, the pressing operation portion 115 is bent substantially in a V-shape along bending portions 116 and 117 provided at a connection portion to the attachment piece 112 and a halfway portion. That is, the pressing operation unit 115
As shown in FIG. 23, when the eject lever 111 is mounted on the base 36, the disk cartridge 1 is deformed following the direction in which the disc cartridge 1 inserted into the holder 23 is ejected from the holder 23. As shown in FIG. 23, the bent portion 117 provided in the middle of the pressing operation portion 115 is provided obliquely so that the distal end side of the pressing operation portion 115 is deformed upward away from the base 36. I have.

On the upper edge side of the distal end side of the pressing operation portion 115, a locking piece 119 which engages with a locking hole 118 provided on the back side of the top plate portion 62 of the holder 23 as shown in FIG. Is protruding. The locking piece 119 is pressed by the pressing operation unit 1 by the disc cartridge 1 inserted into the holder 23.
When 15 is pressed and elastically displaced and moves to the back side of the holder 23, it engages with the locking hole 118. Press operation unit 1
15 is held at a position elastically deformed by the disk cartridge 1 by the locking piece 119 being locked in the locking hole 119, and the pressing operation of the disk cartridge 1 held by the holder 23 is restricted. .

The other end of the mounting piece 112 has a base 3
An engagement piece 121 is provided which is inserted into the rotation regulating hole 120 formed in the base 6 and projects from the lower surface of the base 36. As shown in FIG. 11, when the holder 23 rotatably supported by the base 36 is turned to the recording / reproducing position, which is the lower position, the engagement piece 121 is moved to the second cartridge cartridge of the holder 23 as shown in FIG. A part of the cartridge support piece 68 that forms the holding portion 64 is relatively engaged with an engagement release piece 122 formed by folding back so as to hang down.

A notch 123 is formed between one end of the shaft insertion hole 114 serving as a fixed end of the mounting piece 112 and a connecting portion of the pressing operation portion 115.
A pair of elastic displacement parts 124, 124 are formed on both sides of 23. These elastically deformable portion 124, 124 is intended to be elastically displaceable mounting piece 112 in the extending direction and 22 in the arrow D ₁ direction perpendicular to the pressing operation unit 115.

As shown in FIG. 24, the eject lever 111 formed as described above is positioned so that the pressing operation portion 115 extends to the rear side of the base 36, and the engaging piece 1
21 is inserted into the rotation restricting hole 120, the shaft insertion hole 114 is inserted into the caulking shaft 113, and the tip of the caulking shaft 113 is turned back to be rotatably mounted on the base 36 around the caulking shaft 113. Can be At this time, the ejection lever 111 is set so that the engagement release piece 121 is
It is rotatable about the caulking shaft 113 within the range of movement within 20.

As shown in FIG. 25, the eject lever 111 is extended into the holder 23 when the disc cartridge 1 is inserted into the holder 23 which has been turned to the raised position where the disc cartridge 1 can be inserted and removed. The pressing operation portion 115 is pressed by the insertion end of the disc cartridge 1, and the arrow E in FIG.
Rotated in _one direction. The engagement piece 121 is rotated
When the disc cartridge 1 is further inserted into the holder 23 from the state where the rotation is restricted by abutting on one side,
The pressing operation portion 115 is pressed by the insertion end of the disk cartridge 1 and moves toward the rear side of the holder 23 as indicated by an arrow E in FIG.
_It is elastically displaced in _one direction. Disk cartridge 1
However, as shown in FIG. 27, when the pressing operation portion 115 is inserted to the holding position of the holder 23, the pressing operation portion 115 is elastically deformed along the rear side of the holder 23. At this time, the pressing operation unit 11
5 is inclined so that the distal end side is directed to the top plate 62 side of the holder 23, so that the locking piece 119 provided on the distal end side of the pressing operation unit 115 is moved to the middle holder 23 as shown in FIG.
Is inserted from the lower surface of the top plate 62 into the engagement hole 118 formed on the back side of the top plate 62. When the locking piece 119 is locked in the locking hole 118 on the holder 23 side, the ejecting lever 111 allows the pressing operation portion 115 to
3 is elastically deformed along the back side and held in position,
Pressing operation of the disc cartridge 1 held by the holder 23 is restricted.

When the disc cartridge 1 is held and the eject lever 111 is locked on the back side of the elastically displaced holder 23, the holder 23 is moved downward to the recording / reproducing position close to the base 23 by the base 36. around the support shaft 73 which is provided, pivoted to direction of arrow F ₁ in FIG. 25, when it is rotated to the recording position close to the base 36 as shown in FIG. 29, provided on the holder 23 The engagement piece 1 provided on the eject lever 111 by the engagement release piece 122
21.

When the holder 23 is rotated to the recording / reproducing position, the disk cartridge 1 held by the holder 23 is positioned and mounted on the cartridge mounting section 37, and the optical disk 5 stored in the disk cartridge 1 is rotated by the disk rotation mechanism. The optical disk 5 is clamped by the disk table 44 of 41, and the optical disk 5 is driven to rotate so that the information signal can be recorded and reproduced.

[0068] To eject the disk cartridge 1 loaded on the cartridge loading section 37, when rotated in the upward direction in FIG. 29 in an arrow F ₂ direction away holder 23 from the base 36 with the lid 22, the engagement releasing pieces 122
There is pressed in the arrow G ₁ direction in the drawing 29 to lift the engagement piece 121. When the engagement piece 121 is pressed in the arrow G ₁ direction in FIG. 29, around the elastic displacement portions 124, 124 together with the mounting piece 112 is rotated in the figure 27 E ₂ direction around the caulking shaft 113 Figure 23 away from the base 36, are rotated and displaced in FIG. 28 and FIG. 29 arrow H ₁ direction. When the mounting piece 112 is rotationally displaced in the arrow H ₁ direction in FIG. 23, the top plate portion of the pushing operation section 115 holder 23 6
In the direction of Figure 28 away from the 2 it is rotationally displaced in the arrow J ₁ direction. When the pressing operation portion 115 is rotationally displaced in the arrow J ₁ direction in FIG. 28, as shown in FIG. 30, the engagement of the locking hole 118 of the locking piece 119 is released. When the engagement of the locking piece 119 with the locking hole 118 is released, the pressing operation portion 115 of the eject lever 111, which has been elastically displaced by the insertion of the disc cartridge 1 into the holder 23 and has accumulated the elastic displacement force, is moved to the holder. elastically restored in FIGS. 26 and 27 in the arrow E ₂ direction so as to project into the 23, the disk cartridge 1 inserted held by the holder 23 to protrude outward of the holder 23, and the possible state removed from the holder 23 I do.

By the way, when the holder 23 is rotated in the upward direction away from the base 36, since the mounting piece 112 is rotated in the arrow E ₂ direction in FIG 27 around the caulking shaft 113, the engagement piece 121 It is in a state separated from the engagement release piece 122. At this time, the caulking shaft 113 applies and applies a pressing force to the mounting piece 112 so that the mounting piece 112 is fixed. The piece 122 is separated from the piece 122. Thus, the disk cartridge 1
Is ejected, the engagement piece 121 is disengaged from the engagement release piece 12.
Since placed in separated state from 2, when the holder 23 the disk cartridge 1 is not inserted is rotated in FIG. 25 in direction of arrow F ₁ of the recording and reproducing position side, also, the holder 2
3 is rotated from the recording / reproducing position side toward the ascending position side, the contact between the engagement piece 121 and the engagement release piece 122 is avoided, thereby preventing generation of an unpleasant collision sound. be able to.

The eject mechanism 110 constructed as described above can constitute a mechanism for ejecting the disk cartridge 1 inserted into the holder 23 only by the eject lever 111 formed of an elastically displaceable metal plate or the like. Therefore, the number of parts can be reduced and the configuration can be made extremely simple.

The above-described eject mechanism 110 is configured to lock the eject lever 112 to the holder 23 when the disc cartridge 1 is held in the holder 23.
15 is formed so as to be inclined toward the base 36, and the base 3
By providing the locking piece 119 on the 6 side, the eject lever 112 can be locked on the base 36 side.

As shown in FIG. 8, the disk recording / reproducing apparatus according to the present invention includes a magnetic head device 131 for recording information signals on the optical disk 5 which is rotated by the disk rotation driving mechanism 41. I have. Since the magnetic head device 131 records information signals on the optical disk 5 in cooperation with the optical pickup device 48, the magnetic head device 131 sandwiches the optical disk 5 that is rotationally driven by the disk rotation driving mechanism 41, as shown in FIG. Is disposed so as to face the optical pickup device 48. Also. The magnetic head device 131 is used for the optical pickup device 48 of the optical disc 5.
In order to apply an external magnetic field modulated on the basis of the information signal to be recorded at the position where the light beam emitted from the optical disk is irradiated, the optical disk 5 is moved in the radial direction of the optical disk 5 in synchronization with the optical pickup device 48. You. Therefore, the magnetic head device 131 is connected to the optical block 49 of the optical pickup device 48 via a connecting member 132 as shown in FIG. The magnetic head device 131 is connected to the optical block 4
As shown in FIGS. 31 and 32, the connecting member 132 connected to the optical block 9 is formed by bending a highly rigid metal plate into a U-shape, and has a fixing piece for fixing to the lower surface side of the optical block 49 at the lower end side. 133 is provided, and a rising piece 134 that is vertically bent is provided on one end side of the fixing piece 133,
A support arm mounting piece 135 serving as a support base that is bent so as to face the fixed piece 133 is provided on the distal end side of the rising piece 134. Connecting member 132
The fixing piece 133 is fixed to the lower surface side of the optical block 49 so that the support arm mounting piece 135 faces the top plate 62 of the holder 23, and is connected to the optical pickup device 48. The fixing of the fixing piece 133 to the optical block 49 is as follows.
This is performed by screwing the fixing screws 138, 138 inserted into the screw insertion holes 136, 137 formed in the fixing piece 133 to the lower surface side of the optical block 49.

As shown in FIGS. 8 and 32, the magnetic head device 131 supported on the support arm mounting piece 135 of the connecting member 132 connected to the optical pickup device 48 supports the magnetic head element 140 on the distal end side. Head support arm 141, arm support plate 142 for restricting excessive displacement of head support arm 141, and support piece 143 formed on the base end side of head support arm 141, together with support arm mounting piece 135. An arm fixing member 144 for fixing to the support arm mounting piece 135 is provided.

The head support arm 141 supporting the magnetic head element 140 at the tip end is formed by punching a thin elastic metal plate such as phosphor bronze. The magnetic head element 140 includes an elastically displaceable head support arm 141.
When the optical disk 5 scans the signal recording area of the optical disk 5 even when the optical disk 5 is driven to rotate due to surface runout, the head support arm 14
By elastically deforming 1, it is possible to prevent floating from the main surface of the optical disk 5 and to accurately scan the signal recording area.

The support piece 143 formed on the base end side of the head support arm 141 has a support arm mounting piece 135.
Are formed with positioning holes 147 and 148 to be engaged with the positioning projections 145 and 146 protruding therefrom. One of the positioning holes 147 has a long diameter in a direction orthogonal to the extension direction of the head support arm 141 so that the position of engagement with the one of the positioning protrusions 145 can be adjusted. The head support arm 141 is supported on the support arm mounting piece 135 by engaging the positioning holes 147 and 148 with the positioning protrusions 145 and 146, thereby positioning the mounting position with respect to the support arm mounting piece 135. In addition, between the positioning holes 147 and 148 of the support piece 143,
A screw insertion hole 150 through which a fixing screw 149 for fixing the arm fixing member 144 to the support arm mounting piece 135 is inserted.
Are drilled.

As shown in FIG. 32, the arm support plate 142 has an L-shaped arm support portion 151 that supports the magnetic head element 140 of the head support arm 141 at the distal end and supports the lower surface at the distal end. A pair of support projections 152 and 153 mounted on the support arm attachment piece 135 are provided on the base end side. At the distal ends of the support projections 152 and 153, support arm attachment pieces 1
Engagement projections 152a and 153a that engage with the engagement holes 154 and 155 formed in the hole 35 are bent. The arm support plate 142 faces the lower surface of the head support arm 151 so that the arm support portion 151 faces the lower surface of the head support arm 151.
It is attached to the head support arm 151 integrally, for example, by welding a part of the portion that is overlaid on the head support arm 151. At this time, the support protrusions 152 and 153 are located on both sides of the head support arm 141 and extend to the base end side of the head support arm 141.

The arm fixing member 144 is formed using a thin metal plate having elasticity. As shown in FIG. 32, a fixing portion 156 to the support arm mounting piece 135 is provided on the base end side. The fixing portion 156 is provided with positioning holes 157 and 158 which engage with positioning protrusions 145 and 146 provided on the support arm mounting piece 135. The one positioning hole 157 is orthogonal to the extension direction of the arm fixing member 144 so that the position of engagement with the one positioning protrusion 145 can be adjusted similarly to the one positioning hole 147 provided in the head support arm 141. The direction is defined as the major axis. The arm fixing member 144 is supported on the support arm mounting piece 135 by engaging the positioning holes 157 and 158 with the positioning protrusions 145 and 146, thereby positioning the mounting position with respect to the support arm mounting piece 135. Further, between the positioning holes 157 and 158, the arm fixing member 144 is attached to the support arm mounting piece 1.
A screw insertion hole 160 into which a fixing screw 149 to be fixed to 35 is inserted is formed.

As shown in FIG. 32, mounting position regulating pieces 161 and 161 are formed on both sides of the fixing portion 156 so as to hang down on both sides of the supporting arm mounting piece 135 so as to hang down. These mounting position regulating pieces 16
Engagement holes 163 and 163 are formed in the bent base portions of the support arms 1 and 161 to engage with the engagement protrusions 162 and 162 projecting from both sides of the support arm attachment piece 135. The arm fixing member 144 sandwiches both sides of the support arm attachment piece 135 with the attachment position regulating pieces 161 and 161, and
63 and 163 are engaged with the engagement protrusions 162 and 162 and attached to the support arm attachment piece 135,
Movement in the rotation direction about the fixing screw 149 is reliably restricted.

The arm fixing member 144 has a pressing support portion extending from a head support arm 141 to an arm support plate 142 attached to and superimposed on the head support arm 141 at the distal end side of the fixing portion 156. 165
Is provided. The pressing support portion 165 is provided on the head supporting arm 1 so that the magnetic head element 140 contacts the optical disc 5 with a constant contact pressure when recording an information signal.
41 is intended to press urging the optical disk 5 in the arrow arrow K ₁ direction in FIG 31, the support arm mounting piece 135
When attached to the upper side, the head support arm 141 is bent and deformed so as to urge the head support arm 141 toward the optical disk 5. The arm support plate 1 is located on the tip end side of the pressing support portion 165.
An engagement protrusion 167 that engages with an engagement hole 166 formed in communication with the head support arm 141 and the head support arm 141 is bent. Further, on both sides of the pressing support portion 165, the support protrusions 15 formed on the base end side of the arm support plate 142 are provided.
Pressing support pieces 168 and 169 that press and support 2,153 are protruded.

The magnetic head device 1 configured as described above
The head support arm 141 has positioning holes 147, 148 formed in the support piece 143 and positioning protrusions 145, 1.
46, the support arm mounting piece 1
The mounting position with respect to 35 is positioned and supported on the support arm mounting piece 135. At this time, the support protrusions 152, 1 provided on the arm support plate 142 integrally attached so as to be superimposed on the head support arm 141.
53 is mounted on the support arm attachment piece 135 by engaging the engagement projections 152a and 153a on the distal end side with the engagement holes 154 and 155 formed in the support arm attachment piece 135.

As shown in FIG. 33, on the support arm mounting piece 135 on which the head support arm 141 is supported,
The arm fixing member 144 is attached. The arm fixing member 144 includes positioning holes 157 provided in the fixing portion 156,
158 are positioning holes 147, 14 formed in the head support arm 141 supported on the support arm mounting piece 135.
By engaging with the positioning protrusions 145 and 146 protruding from the position 8, the mounting position with respect to the support arm mounting piece 135 is positioned. At this time, the mounting position regulating piece 16
1, 161 are bent to both sides of the support arm attachment piece 135, and as shown in FIG.
The engagement protrusions 162 and 162 are engaged with the.

The arm fixing member 144 is superimposed on the head support arm 141 and
33, the pressing support 165 is extended from the head support arm 141 onto the arm support plate 142, as shown in FIG.
And presses and biases the disc 5 in the arrow K ₁ direction in FIG 33. At this time, the engagement protrusion 167 provided on the distal end side of the pressing support portion 165 engages with the engagement hole 166 formed in communication with the arm support plate 142 and the head support arm 141. Further, pressing support pieces 168 and 169 projecting from both sides of the pressing support portion 165 press and support the supporting protrusions 152 and 153 formed on the base end side of the arm support plate 142.

The arm fixing member 144 thus superimposed on the head supporting arm 141 and supported on the supporting arm mounting piece 135 is the arm fixing member 144.
Insertion hole 160 and head support arm 14
Fixing screw 1 communicated with the screw insertion hole 105 drilled in 1
Screw hole 1 formed by drilling 49 into support arm attachment piece 135
70, the support arm mounting piece 13
5, the support piece 143 of the head support arm 141 is sandwiched, and the head support arm 141 is fixed to the support arm attachment piece 135.

The magnetic head device 13 configured as described above
Reference numeral 1 denotes a pressing support section 165 provided on an arm fixing member 144 for holding the head supporting arm 141 together with the supporting arm mounting piece 135 and fixing the head supporting arm 141 to the supporting arm mounting piece 135 to press the head supporting arm 141 toward the optical disk 5. As a result, there is no need to use an independent spring member or the like for displacing the head support arm 141 toward the optical disk 5, so that the number of parts can be reduced,
Assembly is also easy.

The head support arm 141 formed by using a fragile leaf spring is supported by the arm fixing member 144 by an engaging mechanism in which an engaging projection 167 provided on the arm fixing member 144 has an engaging hole 166. Therefore, even if the disk recording / reproducing device is dropped and an impact is applied, deformation of the elastic displacement portion on the support arm mounting piece 135 side functioning as a hinge portion can be reliably prevented.

Further, supporting protrusions 152 and 153 formed on the base end side of the arm supporting plate 142 superposed on the head supporting arm 141 are provided with pressing supporting pieces 168 and 168 protruding from both sides of the pressing supporting portion 165. Since the head support arm 141 supports the magnetic head element 104, the displacement of the head support arm 141 in the torsional direction is restricted, and the magnetic head element 104 supported on the distal end side can be brought into sliding contact with the optical disk 5 in a stable state.

In the above-described magnetic head device 131, an engagement protrusion 167 is provided on an arm fixing member 144 as an engagement mechanism for preventing deformation of the head support arm 141.
Although the engagement hole 166 is provided on the head support arm 141 side, the engagement protrusion 167 and the engagement hole 166 may be provided in reverse. That is, as shown in FIG. 34, a part of the arm support plate 142 superposed on the head support arm 141 is cut and raised to provide an engagement protrusion 171, and the engagement protrusion 171 is engaged with the arm fixing member 144. Alternatively, an engaging hole 172 may be provided.

As shown in FIG. 35, the head support arm 141 is attached to the distal ends of the pressing support pieces 168 and 169 projecting from both sides of the pressing support portion 165 of the arm fixing member 144.
A pair of engagement projections 174 and 174 may be provided to engage with a pair of engagement recesses 173 and 173 formed on both sides on the base end side of the arm support plate 142 which is superimposed.

The head support arm 141 used here is entirely formed of a leaf spring having elasticity so that the entire arm 141 can be elastically deformed. The portion is molded with a synthetic resin, and a part of a leaf spring is protruded from the fixed portion side to the support arm mounting piece 135 and the tip side supporting the magnetic head element 104 to constitute an elastic displacement portion. You may.

As described above, the magnetic head device which is connected to the optical pickup device 48 via the connecting member 132 and is disposed to face the optical pickup device 48 with the optical disk 5 rotated and driven by the disk rotation driving mechanism 41 interposed therebetween. 131 is a head support arm 14 as shown in FIG.
1 extends on the top plate 62 of the holder 23. Head support arm 1 extended on top plate 62 of holder 23
The rotation of the holder 41 with the rotation of the holder 23 causes the fixed portion side of the holder arm mounting piece 135 to be rotated and displaced using the elastic displacement portion as a hinge portion.

The magnetic head element 140 supported at the tip of the head support arm 141 is
When an information signal is recorded on the optical disk 5, the signal recording area of the optical disk 5 is approached so as to be in sliding contact with the optical disk 5 in order to apply an external magnetic field with a large magnetic field strength. At this time, as shown in FIGS. 8 and 9, the head support arm 141 enters the holder 23 via the head insertion opening 180 provided in the top plate 62 of the holder 23. The magnetic head element 14 supported on the tip side of the head support arm 141 that has entered the holder 23 moved to the recording / reproducing position.
0 enters the cartridge body 4 of the disc cartridge 1 held by the holder 23 and mounted on the cartridge mounting portion 37 on the base 36 as shown in FIG.
It comes into sliding contact with the main surface of the optical disk 5 that is driven to rotate in the cartridge body 4.

When reproducing the information signal recorded on the optical disk 5, it is not necessary to apply an external magnetic field from the magnetic head device 131, and the signal of the optical disk 5 is emitted by the light beam emitted from the optical pickup device 48. Since it suffices to scan only the recording area, the magnetic head element 140 is separated from the main surface of the optical disk 5 in order to prevent wear caused by the magnetic head element 140 sliding on the optical disk 5 and damage caused by the wear. You. Also in the stop state where the rotation of the optical disk 5 is stopped, the magnetic head element 140 is separated from the main surface of the optical disk 5 and the head support arm 1
41 is moved outside the holder 23.

Further, when the disc cartridge 1 held by the holder 23 is ejected,
When the disk cartridge 1 is inserted into the disk cartridge 3, the head support arm 141 is moved outside the holder 23 in order to prevent the magnetic head element 140 from colliding with the disk cartridge 1 and being damaged.

In the disk recording / reproducing apparatus according to the present invention, the magnetic head element 140 is moved closer to or away from the optical disk 5 in accordance with the operation mode.
1 is provided with a head elevating mechanism 181 for elevating the head 1. As shown in FIGS. 8 and 9, the head lifting mechanism 181 is rotatably supported on the top plate 62 of the holder 23 and lifts and lowers the head support arm 141.
82, a rotating operation lever 183 for rotating the lifting operation plate 182, and a lowering side of the base 36, as shown in FIG. An elevation control lever 184 that controls the rotation of the plate 182 and a drive motor 185 that moves the elevation control lever 184 are provided.

As shown in FIGS. 9 and 36, the lifting operation plate 182 is located on the lower surface side of the head support arm 141 and rotates the head support arm 141.
6, a pair of support arms 187, 187 protrude from both sides on the base end side of the rotary operation part 186. The elevating operation plate 182 is provided so as to be inserted into the head insertion opening 180, and cuts a part of the top plate 62 by using the support shafts 188, 188 projecting from the base ends of the support arms 187, 187. The head support arm 141 is pivotally supported by the pivotally supporting pieces 189, 189 formed so as to be pivotable about the support shafts 188, 188 in a direction in which the head support arm 141 is moved up and down. When the lifting operation plate 182 is supported on the top plate 62, it is provided on one side of the rotation operation unit 186, and a projection 190 is formed by cutting off a part of the top plate 62. 191 to support the top plate 6
It is urged to rotate to the two sides.

The rotating operation lever 183 is provided at one end thereof with a rotating operation piece 193 formed by raising a cam piece 192 for operating the elevating operation plate 182. As shown in FIG. 37, the lift control lever 1 which is hung down along the second cartridge holding portion 64 of the holder 23 and is disposed on the lower surface side of the base 36 is provided on the other end side of the rotation operation lever 183.
The connecting piece 193 connected to the connecting piece 84 is bent. As shown in FIG. 36, the rotation operation lever 183 is rotatably supported at an intermediate portion on a support shaft 195 attached to the top plate 62. On one side of the rotation operation plate 193 on which the cam piece 192 of the rotation operation lever 183 is formed,
An operated piece 197 protruding from the rotation operation section 186 of the lifting operation plate 182 is overlapped. Operated piece 197
Is mounted on the cam piece 192 by the rotation operation of the rotation operation lever 183. The operated piece 197 is
Since the elevating operation plate 182 is rotationally biased toward the top plate 92 by the elastic support arm 191 provided on the top plate 62, it is pressed against the cam piece 192 or the rotating operation piece 193.

The rotation operation plate 193 is locked by an L-shaped locking piece 196 formed by cutting and raising a part of the top plate portion 62, and is prevented from floating from the top plate portion 62.
As shown in FIG. 8 and FIG. 36, when one of the turning operation pieces 193 is turned to a lower position for turning the elevating operation plate 182 to the holder 23 side, as shown in FIGS. An operation control piece 197 provided on the plate 182 is engaged, and a rotation restricting piece 198 is provided for restricting the upward / downward operation plate 182 from turning away from the top plate 62 in the ascending direction.

The lifting / lowering control lever 184 is shown in FIGS.
As shown in the figure, the slots 202, 202 are provided on the bottom side of the
Through the base 3 in the range of the slots 202.
It is movably supported 7 and the arrow M ₁ direction and the arrow M ₂ direction in FIG. 40 across the longitudinal direction of 6. One end of the lift control lever 184 has a connecting arm 203 to which a rotation operating lever 183 is connected and a rack plate 20 having a rack gear 204 formed on one side connected to a drive motor 185.
5 is formed to branch off. Connecting arm 203
An engagement hole 206 is drilled at the front end of the base member 36, and the front end of a connecting piece 193 provided at the other end of the rotation operation lever 183 extended to the lower surface of the base 36 is inserted and engaged.

The pivoting operation lever 183 having the connecting piece 193 connected to the lifting control lever 184 serves as a lifting control lever 184.
There by being operated to move 40 in the arrow M ₁ direction and the arrow M ₂ direction, is in Figure 40 about the support shaft 195 arrow N ₁ direction and the arrow N ₂ direction rotation operation.

Drive motor 185 for lifting control lever 184
The rack gear 204 is meshed with the last gear of the reduction gear mechanism 208 meshed with the worm gear 207 attached to the drive shaft of the drive motor 185. When the drive motor 185 is driven, the lift control lever 184 is moved in the direction of the arrow M ₁ or the direction of the arrow M _{2 in} FIG. 40 in accordance with the rotation direction of the drive motor 185. lifting operation by rotational operation in the arrow N ₁ direction or the arrow N ₂ direction plate 1
The magnetic head element 140 supported on the tip of the head support arm 141 is moved closer to or away from the optical disk 5 by rotating the head 82 to move the head support arm 141 up and down.

By the way, the above-described head lifting mechanism 181
The magnetic head element 140 detects the position of the lift control lever 184 and controls the drive direction of the drive motor 185 based on the detected output, so that the magnetic head element 140 moves downward to the optical disk 5 or rises to a position away from the optical disk 5. An elevating control mechanism of the magnetic head device 131 for controlling the movement of the magnetic head device 131 is provided. As shown in FIG. 40, this lifting control mechanism includes a detection piece 210 protruding from one side of the other end of the lifting control lever 184 and a detection element 211 for detecting the position of the detection piece 210. Detecting mechanism 212 is provided. Detection element 211 constituting this detection mechanism 212
An optical detection element such as a photocoupler provided with a light emitting element 213 and a light receiving element 214 in parallel with the moving direction of the elevation control lever 184 is used.

The detection mechanism 212 is provided with the lifting control lever 1
84 is moved to the innermost side of the base 36, and the rotation operation lever 183 is turned around the support shaft 195 as an arrow N _{2 in} FIG.
To lower the head support arm 141,
When the recording mode of the information signal in which the magnetic head element 140 contacts the optical disc 5 is in a selected state, the detecting piece 210 is moved to a position off the detecting element 211 as shown in FIG. When the detection piece 210 is moved to a position off the detection element 211, the detection mechanism 212 in which no detection output is output from the detection element 211 is in the OFF state. That is, when the detection piece 210 is moved to a position deviating from the detection element 211, the detection light emitted from the light emitting element 213 does not return light reflected by the detection piece 210, so that the light reception element 214 The return light is not detected, and the detection element 211 enters an OFF state in which no detection output is output.

When the lift control lever 184 is moved to the position where the recording mode is selected, the lift lever 18
As shown in FIG. 11, the holder lock piece 200 provided on one side of the
The engagement piece 199 formed by cutting and raising a part of the cartridge support piece 68 is engaged as shown in FIG. 40, and the rotation of the holder 23 in the direction away from the base 36 is restricted.

Also, the elevation control lever 184 is
Most are moved to the front side, the rotation operation lever 183 around the support shaft 195 is rotated in the arrow N ₁ direction in FIG. 42,
Raise the head support arm 141 and move the magnetic head element 1
Even when the playback mode or the stop mode in which the optical disc 40 is separated from the optical disc 5 is selected, as shown in FIG. State is made.

The position where the elevation control lever 184 is moved to the innermost side of the base 36 shown in FIG.
41, the detection piece 210 faces the detection element 211 and the detection light emitted from the light emitting element 211 is detected. The piece 210 is reflected and detected by the light receiving element 214, a detection output is output from the detection element 211, and the detection mechanism 212 is turned on.

A state in which the detection mechanism 212 detects that the magnetic head element 141 is separated from the optical disk 5 and is in the stop mode raised above the holder 23 will be described.

The detection mechanism 212 detects the position of the elevation control lever 184 and detects the position of the magnetic head support arm 1.
In order to detect the ascending / descending position of 41, it is checked whether or not there is an output from the detecting element 211, that is, whether or not the detecting mechanism 212 is ON or OFF in an initial state of power-on. This confirmation is performed by a control circuit unit provided in the disk recording / reproducing apparatus. Here, detection element 2
When it is confirmed that the detection output is output from the ON state, it is detected that the elevation control lever 184 is at the intermediate position shown in FIG. After detecting that the detection mechanism 212 is in the ON state, the lifting control lever 1
84 temporarily rotated in one direction the driving motor 185 to move in Figure 40 in the arrow M ₂ direction, the detection mechanism 21
When the switch 2 is turned off, the elevation control lever 184 is moved to the front side of the base 36 as shown in FIG. 41, and it is detected that the magnetic head element 140 is in the stop mode position separated from the optical disk 5. Is done.

In the initial state when the power is turned on, the detecting element 2
The detection mechanism 212 that does not output the detection output from the
When it is confirmed that the camera is in the F state, the lifting operation lever 184 is moved to the innermost side of the base 36 shown in FIG. It is detected that the head has been moved to the front side of 36 and is in any position in the stop mode in which the head support arm 141 is raised. here,
As with the above, once it is driven to rotate in one direction the driving motor 185 to move the lift control lever 184 in Figure 41 the arrow M ₂ direction. The detection mechanism 212 is turned off even after the drive motor 185 is rotationally driven in one direction for a predetermined time.
When maintaining the state, it is detected that the elevation control lever 184 has been moved to the front side of the base 36 shown in FIG. 42 and has been moved to the stop mode position. After the driving motor 185 is driven to rotate in one direction for a predetermined time,
Once the detection mechanism 212 is turned on and then the off state is detected, the elevation control lever 184 is turned on as shown in FIG.
Is moved to the front side of the base 36 and moved to the stop mode position.

The magnetic head device 1 configured as described above
The elevation control mechanism 31 detects the position of the elevation control lever 184 by a detection mechanism 212 including one detection piece 210 provided on the elevation control lever 184 and one detection element 211 for detecting the position of the detection piece 210. Then, the drive motor 18 is moved so as to move the lift control lever 184 in one direction.
5 is driven in one direction to raise and lower the control lever 1
84 is moved to a fixed position, the position of the lift control lever 184 moved to a plurality of positions is
Can be detected by the two detection mechanisms 212 and the detection mechanism 2
12 can be simplified, the installation space in the disk recording / reproducing apparatus can be reduced, and the apparatus itself can be downsized.

In the above example, when the power is turned on, the elevation control lever 184 is moved most to the front side of the base 36 as shown in FIG. 42, and the head support arm 141 is moved to the elevation position. Therefore, as long as the recording mode is not selected, the magnetic head element 140 can always be located at a position separated from the optical disk 5, so that careless sliding contact between the magnetic head element 140 and the optical disk 5 can be avoided. The head element 140 and the optical disk 5 can be protected.

In the above-described example, the detection mechanism 212 is configured by using optical detection means including the light-emitting element 213 and the light-receiving element 214 as the detection element 211.
A pressing operation type detection switch that detects the detecting piece 210 by being pressed by the detecting piece 210 may be used.

At the other end of the elevation control lever 184, as shown in FIG. Unlock transmission member 22 for associating with an unlock lever 223 moved and operated by the
3 are provided. This lock release transmission member 220
Is formed by bending a linear spring into a U-shape, and has a base 224 provided at the other end of the elevating control lever 184.
And mounted so as to be rotatable and displaceable in a direction orthogonal to the moving direction of the lifting control lever 184.

The lock release transmission member 220 is in the stop mode position in which the elevation control lever 184 is moved most to the front side of the base 36 as shown in FIG. When it is moved to the front side of the base 36, it enters between the lock lever 222 and the lock release lever 223,
The lock lever 222 can be moved by the lock release lever 223 that is moved by the pressing operation of the lid opening operation button 24, and the lock of the lid 22 can be released.

Further, as shown in FIG. 40, when the lift control lever 184 is moved to the innermost side of the base 36, the lock release transmitting member 220 is moved downward. The lock lever 222 and the lock release lever 22
3 and the lock lever 222 is disabled.

By providing such an unlock transmission member 220, the magnetic head element 140 can be
When the disc cartridge 1 is lowered into the holder 23 in a state in which the disc cartridge 1 is slidable, the opening operation of the lid 22 is prohibited. Can be prevented, and the recording failure of the information signal can be prevented.

Next, the disc cartridge 1 is loaded into the disc recording / reproducing apparatus having the above-described configuration, and information signals are recorded / reproduced on / from the optical disc 5 stored in the loaded disc cartridge 1. A series of operations for ejecting the loaded disk cartridge 1 will be described.

To load the disc cartridge 1 into the disc recording / reproducing apparatus, the cover opening operation button 2
By pressing the button 4, the lock of the lid 22 at the position where the apparatus main body 21 is closed is released.

In the disk recording / reproducing apparatus shown here, when the recording mode is stopped, that is, when the stop button is operated, the drive motor 185 is driven and the elevation control lever 184 is turned on the base 36 as shown in FIG. The magnetic head element 140 is moved to the ascending position separated from the optical disk 5 by being moved to the front side of
The lock release transmission member 220 is advanced between the lock lever 222 and the lock release lever 223, and the operation of moving the lock lever 222 is enabled by operating the lid opening operation button 24.

When the lid 22 is unlocked, the lid 2
20 is pressed by first and second lid rotation urging plates 91 and 92 provided integrally with the top plate portion 62 of the holder 22, and is turned in a direction away from the holder 23 as shown in FIG. Be moved. The lock of the lid 22 is released, and the holder 23 is rotated together with the lid 22 to a raised position where the holder 23 is separated from the base 36. As shown in FIG.
9 faces outside.

At this time, as shown in FIG. 18, the holder 23 has the engaging piece 86 provided on the first cartridge holding portion 63 locked by the locking portion 87 provided on the base 36 side, and further raised. The rotation in the first direction is restricted, and the first shaft portion 73 is inserted into the first shaft engagement hole 71 on the holder 23 side through the cutout portion 75.
Is prevented from falling off.

Here, the disc cartridge 1 is inserted into the holder 23 through the cartridge insertion opening 69. At this time, the disc cartridge 1 is
Is inserted into the holder 23 with the surface orthogonal to the one side surface to which is attached as the insertion end.

When the disc cartridge 1 is inserted into the holder 23, the shutter opening member 99 enters the shutter opening groove entrance groove 12 provided on one side surface of the cartridge main body 4 to release the lock of the shutter member 10 and release the shutter. Engagement protrusion 10 provided on the tip side of member holding piece 101
2 engages with an engagement hole 13 provided in the shutter member 10 to regulate the movement of the shutter member 10.

When the disc cartridge 1 is further inserted into the holder 23, only the cartridge main body 4 is inserted into the holder 23 and is moved relative to the shutter member 10, so that the recording / reproducing device provided on the cartridge main body 4 is provided. The openings 8, 9 are opened.

When the disc cartridge 1 is inserted into the holder 23, the pressing operation unit 1 of the eject lever 111
Reference numeral 15 denotes the insertion end of the disc cartridge 1 in FIG.
On the back side of the middle arrow arrow E ₁ direction of the base 36 is elastically displaced. When the disc cartridge 1 is inserted to a position where the disc cartridge 1 is held by the holder 23, the eject lever 1
11, a locking piece 119 provided on the pressing operation portion 115 is locked by a locking hole 118 provided on the back side of the holder 23, and is held on the back side of the holder 23 in a state where elastic displacement force is accumulated; The force for pressing the disc cartridge 1 in the direction of being ejected from the holder 23 is released.

When the disc cartridge 1 has been inserted to the insertion holding position of the holder 23, the holder 23 is
When the disc cartridge 1 is held by the holder 23 when the disc cartridge 1 is
Is positioned and mounted on the cartridge mounting portion 37 formed on the base 36 by engaging the positioning holes 14 and 15 with the positioning pins 38 and 39. At this time, the optical disk 5 housed in the disk cartridge 1 is clamped by the disk table 44 of the disk rotation drive mechanism 41, and becomes rotatable integrally with the disk table 44.

The holder 23 is attached to the base 36 together with the lid 22.
The lid 22 is moved to the lowering position, and the lid 22 is moved to the closing position where the lid 22 closes the apparatus main body 21.
When locked by the lock mechanism provided on the first side, as shown in FIG. 21, the first and second lid rotation urging plates 91 and 92 provided on the top plate 62 of the holder 23 are moved to the lid 22. And is elastically displaced so as to be flush with the top plate 62. At this time, the first and second cartridge pressing pieces 95, which are provided integrally with the first and second lid rotation urging plates 91, 92 with different initial displacement amounts in the thickness direction of the holder 23,
96 is elastically displaced so as to protrude into the holder 23, and presses the disk cartridge 1 mounted on the cartridge mounting portion 37 to prevent the disk cartridge 1 from floating from the cartridge mounting portion 37. At this time, the third cartridge pressing piece 104 provided on the top plate portion 62 of the holder 23 also presses and biases the disk cartridge 1 toward the cartridge mounting portion 37. The disc cartridge 1 mounted on the cartridge mounting portion 37 is provided with the first and second cartridge pressing pieces 9.
By being pressed and urged by the fifth and 96th and third cartridge pressing pieces 104, accurate positioning in the height direction is achieved.

When the disc cartridge 1 is mounted on the cartridge mounting portion 37 and, for example, the reproduction button is operated and the power is turned on, the position of the elevation control lever 184 is detected by the detection mechanism 212 as described above. Then, the drive motor 185 is driven to rotate in one direction, moves to the front side of the base 36 as shown in FIG. 42, and enters a stop mode in which the magnetic head element 140 is separated from the optical disc 5.

When the reproduction button is operated, the reproduction mode is selected, the disk rotation drive mechanism 41 is driven, the optical disk 5 is driven to rotate, and the pickup feed mechanism 56 starts to drive, and the optical drive is started. The pickup device 48 is moved in the radial direction of the optical disk 5, and the information beam recorded on the optical disk 5 is reproduced by scanning the signal recording area of the optical disk 5 with the light beam emitted from the semiconductor laser.

When the recording button is operated and the power is turned on to record the information signal, as described above, the position of the elevation control lever 184 is detected by the detection mechanism 212 and the drive motor 185 is detected. Is rotated in one direction, and is moved to the front side of the base 36, as shown in FIG. 42, to be in a stop mode in which the magnetic head element 140 is separated from the optical disk 5.

When the recording button is operated and the recording mode is selected, the elevation control lever 184 is once moved to the stop mode position, and then the drive motor 185 is driven to rotate in the other direction, and the elevation operation lever 184 is moved. Arrow M _{1 in} FIG.
Move in the direction. Then, the detection mechanism 212 detects the detection piece 2
10 is detected, turned on once, and then turned off again, the elevating operation lever 184 is turned on the base 3 shown in FIG.
6, the head support arm 141 is lowered.

When the recording mode is selected, the elevation control lever 1
84 when starting the movement in Fig. 42 arrow M ₁ direction, the elevation control lever 1 is engaged with the connecting piece 193 to the engagement hole 206
84 rotation operation lever 183 is connected is rotated in FIG. 42 in the arrow N ₁ direction about the support shaft 195. When the rotation operation lever 183 is rotated in the arrow N ₁ direction in FIG. 41, FIG. 37 in the arrow P ₁ direction to the front side of the cam piece 192 provided on one side of the turning operation piece 193 is holder 23 Go to When the cam piece 192 is moved in the arrow P ₁ direction in FIG. 38, the turning operation the operated piece 197 of the elevation operation plate 182 located on the horizontal surface of the upper side of the cam piece 192 along the inclined surface of the cam piece 192 It moves to the lower side located on the plate 193. When the operated piece 197 is moved downward by being guided by the cam piece 192, the lifting operation plate 182 is
8,188 around the is rotated to the top plate portion 62 side of FIG. 37 in an arrow R ₁ direction of the holder 23. That is, the lifting operation plate 182 is connected to the elastic support arm 191 provided on the holder 23.
Since the head piece 141 is extended on the lifting operation plate 182 and is rotationally biased by the head support arm 141 elastically displaced inward of the holder 23, the operated piece 197 is pressed against the cam piece 192. Then, following the movement of the cam piece 192, it is rotated about the support shafts 188, 188.

[0132] When the lifting operation plate 182 is rotated in the ceiling plate 62 side of FIG. 38 in an arrow R ₁ direction of the holder 23, the head supporting arm 141 extends over the lifting operation plate 182
Is rotated in a direction to fall inwardly of FIGS. 37 and 38 in an arrow R ₁ direction of the holder 23 receives the urging force of the pressing displacement portion 165 provided on the arm fixing member 144. When the head support arm 141 is rotated inward of the holder 23, FIG.
As shown in FIG. 7, the magnetic head element 140 attached to the tip of the head support arm 141 contacts the main surface of the optical disk clamped on the disk table 44. At this time, since the head support arm 141 is rotationally biased inward of the holder 23 by receiving the biasing force of the pressing displacement portion 165, the magnetic head element 140 is brought into contact with the optical disk 5 with a predetermined contact pressure.

The rotation operation lever 183 is connected to the lifting operation plate 18.
When the rotating member 2 is turned to the lowering position, the operated piece 179 provided on the elevating operation plate 182 is engaged with the turning restricting piece 198.
The elevating operation plate 182 is configured such that the operated piece 179 is
By being engaged with the 8, 37 in the arrow R ₂ direction of upward pivoting away from the holder 23 is restricted. Since the rotation of the elevating operation plate 182 in the ascending direction is regulated, the head support arm 141 is reliably maintained in the state of being rotated inward of the holder 23, and the magnetic head element 140.
Is prevented from being separated from the optical disk 5, and an external magnetic field can be accurately applied to the optical disk 5 to record an information signal.

When the recording mode in which the lifting operation lever 184 is moved to the innermost side of the base 36 shown in FIG. 40 is selected, the engagement piece 199 provided on the holder 23 is provided on the lifting operation lever 184. The disk cartridge 1 is engaged with the holder lock piece 200, and the rotation of the holder 23 in the ascending direction in which the holder 23 is separated from the base 23 is regulated, so that the state where the disk cartridge 1 is mounted on the cartridge mounting portion 37 is securely held.

Then, when the recording mode is selected and it is detected that the elevating operation lever 184 has been moved to the innermost side of the base 36 shown in FIG. 40, the disk rotation drive mechanism 41 is driven and the optical disk 5 is moved. The magnetic head device 131 is driven to rotate and the magnetic head device 131 is moved in the radial direction of the optical disk 5 in synchronization with the optical pickup device 48 in a state where the magnetic head device 140 is brought into sliding contact with the optical disk 5. Is done. At this time, the signal recording area of the optical disc 5 is scanned by the light beam emitted from the semiconductor laser of the optical pickup device 48, and the information to be recorded from the magnetic head element 140 at the position where the light beam of the optical disc 5 is irradiated. An information signal is recorded by applying an external magnetic field modulated based on the signal.

After the desired information signal has been recorded, the recording mode is stopped by operating the stop button of the disc recording / reproducing apparatus. After the control signal such as the address of the information signal recorded on the optical disc 5 is recorded, The recording / reproducing device is in the stop mode.

In the disc recording / reproducing apparatus, when the mode is changed from the recording mode to the stop mode, the drive motor 185 is driven to rotate in one direction, and the elevation control plate 184 is moved by the arrow M _{2 in} FIG.
It is moved to the front side of the base 36 in the direction. Drive motor 1
When the detection mechanism 212 detects the detection piece 210 and turns it on once after the detection piece 212 is turned on, and then is driven until it is turned off again, the lifting operation lever 184 moves to the front side of the base 36 as shown in FIG. Is moved to the specified position.

[0138] When the lift control plate 184 is moved in the arrow M ₂ direction in FIG. 40, in FIG. 40 the pivoted lever 183 which is connected to the elevation control lever 184 around the support shaft 195 in the arrow N ₂ direction It is turned. When the rotation operation lever 183 is rotated in Fig. 39 arrow N ₂ direction, turning operating piece 193
Cam piece 192 provided on one side of the moves in FIG. 36 in the arrow P ₂ direction of movement to the rear side of the holder 23. Cam piece 192
When but moving in Figure 37 the arrow P ₂ direction, the elevation operation plate 18
The second operated piece 197 rides on the horizontal plane above the cam piece 192 along the inclined surface of the cam piece 192. When the operated piece 197 rides on the cam piece 192, the elevating operation plate 182 moves around the support shafts 188, 188 as shown in FIG.
It is rotated in a direction away from the top plate portion 62 of the middle arrow R ₂ direction of the holder 23. The elevating operation plate 182 is an arrow R in FIG.
_When pivoted in _two directions, the head support arm 141 extended on the elevating operation plate 182 opposes the urging force of the pressing and displacing portion 165 provided on the arm fixing member 144, as indicated by arrows in FIGS. It is rotated in the upward direction away from the inside of the R ₂ direction of the holder 23. When the head support arm 141 is pivoted out of the holder 23, the magnetic head element 140 attached to the tip of the head support arm 141 separates from the main surface of the optical disk clamped on the disk table 44, As shown in FIG. 37, the disk cartridge 1 is moved to the outside of the holder 23 from inside the disk cartridge 1.

At this time, the engaging piece 20 provided on the holder 23
0 and holder lock piece 20 provided on lifting operation lever 184
The holder 23 is released from engagement with the base 36, and the holder 23 can be rotated in the ascending direction away from the base 36.

When the lifting operation lever 184 is moved to the front side of the base 36 as shown in FIG. 42, the lock release transmitting member 220 is advanced between the lock lever 222 and the lock release lever 223, and the lid By operating the release operation button 24, the lock lever 222 can be moved.

Here, when the lid 22 is unlocked by operating the lid opening operation button 24, the lid 22 is provided with the first and second lid rotation provided integrally with the holder 23. Board 9
In response to the urging forces of 1, 92, the holder 23 is rotated in a direction away from the holder 23 to open the front cartridge insertion opening 69 of the holder 23.

[0142] To unlock the lid 22 in a state of being spaced apart from the holder 23 and rotating the holder 22 together with the lid 22 in the arrow C ₂ direction in FIG. 39, the engagement releasing pieces provided in step 23 122 Is the engaging piece 121 of the eject lever 115
The pressing of the arrow G ₁ direction in the drawing 29 to lift.
When the engagement piece 121 is pressed in the direction of arrow G1 in FIG.
The mounting piece 112 is centered on the caulking shaft 113 in FIG.
_The elastic displacement parts 124, 124 are rotated in _two directions and
23 and 28 separated from the base 36 around the center
The middle arrow H ₁ direction is rotated and displaced. When the mounting piece 112 is rotationally displaced in the arrow H ₁ direction in FIG 23, the pressing operation portion 115 is rotationally displaced in FIG. 28 in the arrow J ₁ direction direction away from the top plate portion 62 of the holder 23. Press operation section 11
When 5 is rotationally displaced in Figure 28 the arrow J ₁ direction, FIG. 30
As shown in FIG. 7, the engagement of the locking piece 119 with the locking hole 118 is released. When the engagement of the locking piece 119 with the locking hole 118 is released, the pressing operation portion 115 of the eject lever 111, which has been elastically displaced by the insertion of the disc cartridge 1 into the holder 23 and has accumulated the elastic displacement force, is moved to the holder. 2
Elastically restored in FIGS. 26 and 27 in the arrow E ₂ direction so as to protrude into the 3, protruded disc cartridge 1 inserted held by the holder 23 to the outside of the holder 23, the holder 2
3 can be taken out.

The holder device described above can be widely applied not only to a disk recording / reproducing device but also to a recording and / or reproducing device using a disk cartridge.

[0144]

The shaft according to the present invention is manufactured by forming a bulge using a mold on a short side of a base material having a long cross-sectional shape, so that manufacture is extremely easy. In addition, by engaging an engagement hole having directionality in the engagement direction with the shaft manufactured here, the engagement hole is prevented from being detached from the shaft in a certain rotation range. be able to.

Further, in the holder device according to the present invention, the shaft portion having directionality in the engagement direction is formed in the holder with an engagement hole provided with a part that is opened, whereby the shaft portion of the holder is formed. It can be easily attached to the shaft, once the engagement hole is engaged with the shaft, it can be securely prevented from coming off from the shaft, and the shaft should be securely supported Can be.

[0146] Further, by forming a circular arc surface on the peripheral surface of the bulging portion of the shaft portion, the holder supported by the shaft portion is smoothly rotated about the shaft portion.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a disk cartridge used in a disk recording / reproducing apparatus according to the present invention.

FIG. 2 is a perspective view showing a lower surface side of the disk cartridge.

FIG. 3 is a perspective view showing one side of the disk recording / reproducing apparatus according to the present invention.

FIG. 4 is a perspective view showing the other edge side of the disk recording / reproducing apparatus according to the present invention.

FIG. 5 is a perspective view of the disk recording / reproducing apparatus showing a state where a lid is opened.

FIG. 6 is an exploded perspective view showing a recording / reproducing unit of the disk recording / reproducing apparatus according to the present invention.

FIG. 7 is a perspective view showing a bottom side of a base to which a recording / reproducing unit is attached.

FIG. 8 is a perspective view showing a state where a holder is attached to a base.

FIG. 9 is a perspective view showing a holder used in the disk recording / reproducing apparatus according to the present invention.

FIG. 10 is a side view showing one side of the holder.

FIG. 11 is a side view showing the other side of the holder.

FIG. 12 is a perspective view showing a shaft provided on a base supporting the holder.

FIG. 13 is a front view of the shaft.

FIG. 14 is a perspective view showing a rising piece provided on a base constituting the shaft portion.

FIG. 15 is a perspective view showing a state in which a protruding piece constituting a shaft formed on a tip end side of the rising piece is bent.

FIG. 16 is a front view showing a state in which a projection is formed to form a shaft.

FIG. 17 is a perspective view showing a state where the holder is attached to the base.

FIG. 18 is a side view showing a state where the holder is attached to the base.

FIG. 19 is a side view showing a state where the holder is turned to the base side.

FIG. 20 is a front view showing a state where the lid is separated from the holder by first and second lid rotation urging plates provided on the holder.

FIG. 21 shows a state where the lid is rotated to a position where the apparatus main body is closed,
It is a front view showing the state where the 1st and 2nd lid rotation urging plates provided in the holder were elastically deformed by the lid.

FIG. 22 is an exploded perspective view showing an eject mechanism used in the disk recording / reproducing apparatus according to the present invention.

FIG. 23 is a front view showing a state in which an eject lever is attached to a base.

FIG. 24 is a plan view showing an eject mechanism provided on a base.

FIG. 25 is a side view showing a state in which an eject lever is pressed by a disk cartridge inserted into a holder.

FIG. 26 is a plan view showing a state where an eject lever is pressed by a disk cartridge inserted into a holder.

FIG. 27 shows a state where the disc cartridge is inserted into the holder,
FIG. 5 is a plan view showing a state in which an eject lever is locked on the back side of the holder.

FIG. 28 is a rear view showing a state in which the eject lever is locked on the rear side of the holder. It is a top view.

FIG. 29 is a side view showing a state in which the eject lever is rotated and displaced by the holder.

FIG. 30 is a rear view showing a state in which an eject lever locked on the rear side of the holder comes off the holder.

FIG. 31 is a side view showing a state where the magnetic head device is connected to the optical pickup device.

FIG. 32 is an exploded perspective view showing a magnetic head device according to the present invention.

FIG. 33 is a perspective view showing a magnetic head device according to the present invention.

FIG. 34 is an exploded perspective view showing another example of the magnetic head device according to the present invention.

FIG. 35 is an exploded perspective view showing still another example of the magnetic head device according to the present invention.

FIG. 36 is a plan view showing an elevating operation mechanism for elevating the head support arm of the magnetic head device.

FIG. 37 is a side view showing a state where the head support arm is lowered.

FIG. 38 is a side view showing a state where the head support arm is raised.

FIG. 39 is a side view showing the head support arm when the holder is moved to a position where the disk cartridge can be inserted and removed.

FIG. 40 is a plan view showing a state where the lifting control lever has moved the head support arm to a lowered position.

FIG. 41 is a plan view showing a state where the elevation control lever is at an intermediate position.

FIG. 42 is a plan view showing a state in which a lifting control lever has moved a head support arm to a raised position.

[Description of References] 73 first shaft portion, 74 second shaft portion, 75 notch portion, 76 rising piece provided on base, 77 bent portion, 78a, 78b bulging portion, 80 projecting piece serving as shaft portion, 81, 82 Mold, 86 Engagement piece, 87
Locking part, 88 elastic displacement part.

Claims (5)

[Claims] 1. A predetermined pressure is applied by using a pair of molds having arc-shaped molding surfaces from opposite short sides orthogonal to the longitudinal direction of a base material having a rectangular cross-sectional shape. A method of manufacturing a shaft portion in which a bulge is formed at a short side portion. 2. The method for manufacturing a shaft portion according to claim 1, wherein the bulging portion is formed as a circular arc surface on a tip end surface side. 3. A holder for holding a disk cartridge, a base on which the holder is rotatably supported, a pair of shaft portions provided on one of the base and the holder, and a pair of shafts provided on the base and the holder. Engagement holes provided on one of the other and engaged with the shaft portion are formed,
One of the shaft portions is formed with a bulging portion having an arcuate peripheral surface on the opposite short side orthogonal to the longitudinal direction, and one of the receiving portions communicates with the engagement hole. A support mechanism having a notch formed therein, wherein the support mechanism engages the other of the engagement holes with the other of the pair of shafts, and the one of the pair of shafts via the notch. A holder device, wherein the holder is rotatably supported by the base by engaging the one engagement hole. 4. The holder device according to claim 3, wherein the holder device further includes a regulating mechanism that regulates an amount of rotation of the holder with respect to the base. 5. The restricting mechanism comprises an engaging piece provided on one of the holder and the base and a locking part provided on the other and engaging with the engaging piece relatively. The holder device according to claim 4, characterized in that: