JPH0793835A - Head supporting device - Google Patents

Abstract

PURPOSE:To prevent a magnetic head from colliding with a disk cartridge by preventing the magnetic head from entering into a cartridge holder except when the disk cartridge capable of being recorded with an information signal is inserted into the cartridge holder. CONSTITUTION:A slide plate 32 fitted to the cartridge holder 19, into which the disk cartridge 120, 121 is inserted, is moved over between a position for supporting the magnetic head 31 and a position capable of allowing this magnetic head 31 to enter the cartridge holder 19 in accordance with a classification of the disk cartridge 120, 121.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head supporting device which constitutes a recording and / or reproducing device for recording and / or reproducing an information signal by using a recording medium such as a disk cartridge.

[0002]

2. Description of the Related Art Conventionally, an information signal is recorded and / or reproduced by using a disc cartridge which is constructed by accommodating a recording disc such as an optical disc, a magnetic disc or a magneto-optical disc in a cartridge. A recording and / or reproducing apparatus configured as above has been proposed.

A recording and reproducing apparatus using a disk cartridge constructed by accommodating a magneto-optical disk in a cartridge as the recording medium has a recording and / or reproducing unit comprising an optical pickup device and a magnetic head device. I have it. The recording / reproducing unit is arranged on the chassis of the recording / reproducing apparatus. The optical pickup device is supported by the chassis and is arranged upward. The magnetic head device is attached via a gimbal spring (limiter spring) to the front end side of a head arm that serves as a head supporting device whose base end side is supported by the optical pickup device, and faces the objective lens of the optical pickup device. And is arranged downward.

The recording / reproducing apparatus is provided with a cartridge holder as a holder member for holding the disc cartridge and mounting the disc cartridge in the recording / reproducing section.

The cartridge holder is formed in a thin casing into which the disc cartridge can be inserted from the front side to hold the disc cartridge, and the rear end side is rotatably supported by the chassis. The cartridge holder is arranged between the optical pickup device and the magnetic head device. When the cartridge holder is in the unloading position, which is separated from the chassis above, the cartridge holder is used for inserting and removing the disc cartridge. Then, when the cartridge holder is at the loading position in the vicinity of the chassis while holding the disc cartridge, the cartridge holder mounts the disc cartridge on the recording and reproducing section.

In this recording / reproducing apparatus, an upper lid is provided on the cartridge holder and the head arm. The upper lid is formed into a substantially housing shape whose lower side is opened so as to cover the cartridge holder and the head arm, and the rear end side is rotatably supported. When the upper lid is rotated upward to be separated from the chassis and opened, the cartridge holder is lifted and rotated to be in the unloading position.

In the recording / reproducing section, when the cartridge holder is at the loading position, the head device enters the cartridge holder from above through a through hole formed in the cartridge holder. Then, it is brought close to the recording disk constituting the disk cartridge. And this head device,
When the cartridge holder is set to the unloading position, and when the disc cartridge configured only for reproduction is inserted into the cartridge holder, the head arm is rotated upward to operate the cartridge. It is retracted upward from the holder.

[0008]

By the way, in the recording and reproducing apparatus as described above, when the upper lid is opened and the cartridge holder is in the unloading position, and a disc dedicated to reproduction is used. When the cartridge is inserted into the cartridge holder, the magnetic head device is located between the cartridge holder and the upper lid so as not to collide with the disc cartridge inserted into the cartridge holder.

However, at this time, when the cartridge holder or the upper lid is rotated by an external force and the cartridge holder and the upper lid are brought close to each other, the magnetic head device is inserted into the cartridge holder. There is fear. When the disc cartridge is inserted into the cartridge holder in such a state, the disc cartridge may collide with the magnetic head device and the magnetic head device may be damaged. Such rotation of the cartridge holder is
When the disc cartridge is inserted into the cartridge holder, it may be caused by friction between the cartridge holder and the disc cartridge.

Further, in this recording / reproducing apparatus,
When the head arm is rotated upward and the magnetic head device is located between the cartridge holder and the upper lid, the weight of the magnetic head device causes the gimbal spring to extend and displace vertically. ing. Therefore, at this time, the head arm needs to be pivotally operated to an angular position capable of moving the magnetic head device by a distance exceeding the extension displacement of the gimbal spring. Therefore, it is necessary to secure a sufficiently large distance between the cartridge holder and the upper lid,
The vertical size of this recording and reproducing device, that is,
It is difficult to reduce the thickness.

Therefore, the present invention is proposed in view of the above situation, and in a recording and / or reproducing apparatus, supports a head device that is moved forward and backward with respect to the inside of a holder member that holds a recording medium. A head support device capable of reliably preventing a recording medium inserted into the holder member from colliding with the head device, and reducing the size of the recording and / or reproducing device in the advancing / retreating direction of the head device. An object of the present invention is to provide a head support device that enables the above.

[0012]

In order to solve the above problems and achieve the above objects, a head supporting device according to the present invention is
A holder member into which a recording medium is inserted and which holds the recording medium, and a head which is supported by a gimbal spring arranged in the vicinity of the holder member so as to be able to come into contact with and separate from the recording medium held by the holder member. A device, a first position movably disposed on the holder member to displace the gimbal spring, and prevent the head device from entering the holder member, and the head device to enter the holder member. And a head operation member that is operated to move over a second position that enables the operation, and a determination that the operation is performed according to the depth of a medium type determination hole provided in the recording medium inserted into the holder member. A member, and the head operation member is moved and operated to either the first position or the second position according to the position of the determination member.

Further, according to the present invention, in the above-mentioned head supporting device, the head operating member is biased by the biasing member in the direction toward the second position, and the discriminating member is the head operating member. Is locked and held at the first position, and the locking with respect to the head operation member is released when the head is moved and operated in accordance with the depth of the medium type determination hole.

Further, according to the present invention, in the above-described head supporting device, the head operating member and the discriminating member are integrally connected.

The head supporting device according to the present invention is
A head arm, a gimbal spring whose base end side is supported by the head arm, a head device attached to the tip end side of the gimbal spring, and a tip end of the gimbal spring which has a weaker elastic force than the gimbal spring. Attached to the side of the gimbal spring and capable of extending to the upper side of the gimbal spring, and the latch holding member extending to the upper side of the gimbal spring and having the base end supported by the head arm on the tip side. And a stopper arm on which is locked.

[0016]

In the head supporting device according to the present invention, the gimbal spring for movably arranged on the holder member holding the recording medium into which the recording medium is inserted is displaced and the head device of the head device is moved. The head operating member, which is operated to move between a first position that prevents the head device from entering the holder member and a second position that allows the head device to enter the holder member, is According to the position of the discriminating member that is moved corresponding to the depth of the medium type discriminating hole provided in the recording medium to be inserted, the disc is moved to either the first or second position. When the recording medium is set to the first position according to the type of the recording medium, the recording medium inserted into the holder member is reliably prevented from colliding with the head device.

Further, in the above-mentioned head supporting device, the head operating member is biased by the biasing member in the direction of the second position, and the discriminating member is the first head operating member. In the case where the head operating member is held and held at the position, and the head operating member is released from the hook when the medium type determining hole is moved corresponding to the depth, the head operating member is It can be configured to move a distance sufficiently larger than the moving distance of the discriminating member due to the difference in the depth of the medium type discriminating hole.

Further, in the above head supporting device,
When the head operating member and the discriminating member are integrally connected, the collision of the recording medium inserted in the holder member with the head device can be reliably prevented with a simple structure.

The head support device according to the present invention is
A head arm, a gimbal spring whose base end side is supported by the head arm, a head device attached to the tip end side of the gimbal spring, and a tip end of the gimbal spring which has a weaker elastic force than the gimbal spring. Attached to the side of the gimbal spring and capable of extending to the upper side of the gimbal spring, and the latch holding member extending to the upper side of the gimbal spring and having the base end supported by the head arm on the tip side. And a gimbal spring approaching the gimbal spring while ensuring a sufficient vertical separation distance between the stopper arm and the head device. By displacing the latch holding member, the thickness in the vertical direction is reduced.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings. In this example, the head supporting device according to the present invention is used to record and reproduce information signals using a recording / reproducing cartridge configured by accommodating a magneto-optical disk in a cartridge, and to accommodate an optical disk in the cartridge. This is an example applied to the configuration of a recording and reproducing apparatus for reproducing an information signal using the reproduction-only cartridge configured as described above as a recording medium.

[1] Structure of Disk Cartridge The magneto-optical disk used in this recording and reproducing apparatus has a signal recording layer made of a magnetic material on a disk substrate made of a transparent synthetic resin material such as polycarbonate having a diameter of about 64 mm. Are adhered and formed. This signal recording layer is locally heated to a temperature higher than the so-called Curie temperature by a means such as irradiation of a focused laser beam, and an external magnetic field is applied to this heated portion by a magnetic head device, thereby generating an information signal. Is written. The information signal thus written irradiates the signal recording layer with a linearly polarized light beam such as a laser beam,
The reflected light flux of this light flux can be read by detecting the rotation of the polarization direction due to the so-called Kerr effect in the signal recording layer.

The optical disk used in the recording and reproducing apparatus is constructed by depositing a reflective layer made of a metal material such as aluminum on a disk substrate similar to the disk substrate of the magneto-optical disk. There is. On the disc substrate of this optical disc, fine pit rows corresponding to the information signals are formed by means such as injection molding. The information signal written on the optical disc is obtained by irradiating the pit train with a coherent light beam such as a laser beam, and detecting a change in the light amount of the reflected beam of this beam due to diffusion or interference in the signal recording layer. Can be read.

As shown in FIGS. 6 to 9, the magneto-optical disk and the optical disk are used as cartridges 10.
5, 116 are rotatably housed to form a disk cartridge. The cartridge 105, which constitutes the recording / reproducing disc cartridge 120 for accommodating the magneto-optical disc, has a thin casing shape having a rectangular main surface portion whose one side substantially corresponds to the diameter of the magneto-optical disc. Is configured. As shown in FIG. 6, the cartridge 105 has a magnetic head opening 123 for exposing a part of the signal recording surface of the magneto-optical disk to the outside on the main surface on the upper surface side. Further, as shown in FIG. 8, the cartridge 105 has an optical pickup opening 122 at a position facing the magnetic head opening 123 on the main surface on the lower surface side. Each has a chucking opening 113 in the central portion. This recording and reproducing disk cartridge 120
6 is inserted in the front direction and attached to the recording and reproducing apparatus as shown by an arrow E in FIGS. 6 and 8.

In the cartridge 105 of the recording / reproducing disk cartridge 120, the magnetic head opening 123 and the optical pickup opening 12 are provided.
The shutter 2 can be opened and closed by the shutter member 106. The shutter member 106 has the openings 12
3, 122 having shutter plate portions corresponding to each other in parallel and facing each other, and a connecting portion for connecting one end sides of these shutter plate portions to each other, and integrally configured by a synthetic resin material or a metal material. Has been done. This shutter member 106
Is slidably supported by the support groove 107 formed on one side of the cartridge 105. That is, the shutter member 106 slides backward along one side of the cartridge 105 to open the openings 123 and 122, and slides forward from the rear side to return to the initial position. Then, the shutter plates close the openings 123, 122.

The cartridge 116, which constitutes the read-only disc cartridge 121 by accommodating the optical disc, has a thin casing shape having a rectangular main surface portion whose one side substantially corresponds to the diameter of the optical disc. It is configured. As shown in FIG. 7, the cartridge 116 does not have an opening in the main surface portion on the upper surface side. As shown in FIG. 9, the cartridge 116 has an optical pickup opening 122 on the lower surface side main surface portion thereof, and the chucking opening 1 is formed at a substantially central portion of the lower surface side main surface portion.
Have 13. The read-only disc cartridge 121 is inserted and mounted in the front direction of the recording and reproducing apparatus as shown by an arrow E in FIGS. 7 and 9.

The reproduction-only disc cartridge 121
In the cartridge 116, the optical pickup opening 122 can be opened and closed by a shutter member 117. The shutter member 117 has a shutter plate portion corresponding to the optical pickup opening 122 and a support portion provided on one end side of the shutter plate portion, and is integrally made of a synthetic resin material or a metal material. Is configured. The shutter member 117 has the support portion slidably supported by a support groove portion 107 formed on one side of the cartridge 116. That is,
The shutter member 117 slides rearward along one side of the cartridge 116 to open the optical pickup opening 122, and slides forward from the rear side to return to the initial position. The shutter plate portion closes the optical pickup opening 122.

The shutter members 106 and 117 are provided with
A shutter closing hole 108 is opened toward the lateral side at a substantially central position of the connecting portion or the supporting portion. The shutter closing hole 108 is for engaging a member for closing the shutter members 106 and 117 in the recording and reproducing apparatus.

A circular chucking hole 104 is formed at the center of the magneto-optical disc and the optical disc. The chucking hole 104 is closed by a chucking plate 102 from the upper surface side. This chucking plate 102 is made of iron or stainless steel,
The chucking hole 10 is made of a magnetic metal material.
4 is formed in a disk shape having a diameter substantially corresponding to 4. These chucking holes 104 and chucking plate 10
2 is exposed to the outside of the cartridges 105 and 116 through the chucking opening 113.

Then, each of the cartridges 105 and 11
A pair of front side and rear side positioning holes 109, 110 are formed in the lower main surface portion of 6. The front-side positioning hole 109 has the opening 122 for the optical pickup.
Is located in the vicinity of the edge of the main surface portion on the front side, and is formed in an oval shape with the major axis direction being the front-rear direction. Also,
The rear side positioning hole 110 is located in the vicinity of an edge of the rear side main surface of the optical pickup opening 122, and is formed in a circular shape.

Further, each of the cartridges 105, 116 described above
A plurality of identification holes 124 are formed in the vicinity of the edge on the other side of the lower main surface portion rear side. These identification holes 124
Is for identifying the type and state of the disks housed in the cartridges 105 and 116, for example, whether or not information signals can be recorded. In the cartridge 105 of the recording / reproducing disc cartridge 120, a save notch 114 is provided on the rear side surface portion corresponding to the identification hole 124. This save notch 11
4 is moved and operated to identify the hole 124 for identification.
One of the two is moved back and forth, the depth of the identification hole 124 is changed, and the identification state of whether or not the information signal can be recorded is switched. Further, the engaged concave portion 112 is formed at the edge portion on the other side of the lower main surface portion front side of each of the cartridges 105 and 116.
Are formed.

In the cartridge 105 of the recording / reproducing disc cartridge 120, a magneto-optical disc identifying recess 111 which is a medium type discriminating hole is formed at the front side edge of the lower main surface. Further, in the cartridge 116 of the reproduction-only disc cartridge 121, an optical disc identification recess 118 which is a medium type discrimination hole is formed at the front side edge portion of the lower main surface portion. The magneto-optical disc identifying recess 111 and the optical disc identifying recess 1
18 is different from each other in depth from the lower main surface portion, and it is possible to discriminate whether the stored disk is the magneto-optical disk or the optical disk by the difference in the depth.

[2] Outline of Configuration of Recording / Reproducing Apparatus This recording / reproducing apparatus has an outer casing composed of an outer casing main body 1 and an upper lid 2 as shown in FIG. The outer casing body 1 is configured such that the upper surface side is open, and the upper surface side can be opened and closed by the upper lid 2.
The upper lid 2 is rotatably supported at the rear end side with respect to the rear end side of the outer casing body 1 via an upper lid support shaft 3.
As shown by an arrow A in FIG. 1, the upper lid 2 is pivoted upward about the upper lid support shaft 3 to open the upper surface side of the outer casing body 1. The upper lid 2 is
The outer casing body 1 is latched in a closed state by a latching member, and the latching release knob 9 provided on the outer casing body 1 is operated to release the latching by the latching member. It

In this recording / reproducing apparatus, the upper lid 2 is opened, and the recording / reproducing disc cartridge 120 or the reproduction-only disc cartridge 121 is mounted in the outer housing, so that the magneto-optical disc is read. It is possible to record or reproduce the information signal and reproduce the information signal from the optical disc.

On the outer surface of the outer casing, a plurality of operation buttons for instructing the recording and reproducing apparatus to execute various operation modes are provided. That is, a play button 4, a stop button 5, a forward track jump button 6, a reverse track jump button 7, and a record button 8 are provided on the outer surface of the outer housing, and these buttons are provided inside the outer housing. It is connected to a control circuit which is provided and controls the operation of the recording and reproducing apparatus. Further, on the outer surface of the outer casing, a plurality of connection jacks 10, 12, 13, 14 connected to the control circuit or the signal processing circuit arranged in the outer casing.
Is provided. These connection jacks are used for outputting information signals, inputting information signals, and inputting remote control signals. Further, a display device 11 which is connected to the control circuit and displays various information by characters or figures is arranged on the upper surface of the upper lid 2.

Further, the outer casing is provided with a battery chamber 15 for accommodating a battery for supplying driving power to the recording and reproducing apparatus.

[3] Structure of Recording and Reproducing Apparatus In the outer casing body 1, as shown in FIGS. 2 and 5, a substantially flat chassis 16 is fixedly arranged. Each of the above-mentioned disc cartridges 1 is mounted on the chassis 16.
A disk table 25 and cartridge positioning pins 17 and 18 for positioning and holding the disks 20 and 121 are provided.

The disk table 25 is a spindle motor 24 mounted on the lower surface of the chassis 16.
It is attached to the drive shaft of. The drive shaft is attached to the chassis 1 through a through hole provided in the chassis 16.
6 is projected to the upper surface side. Disc table 2 above
The reference numeral 5 is formed in a substantially disc shape so that it can be inserted into the cartridge 105, 116 through the chucking opening 113 of the cartridge 105, 116. The disc table 25 has, on its upper surface portion, a protrusion that fits into the chucking hole 104 and a magnet that attracts the chucking plate 102. The disc table 25 is mounted on the cartridge 105, 1 through the chucking opening 113.
When entering the inside of 16, the peripheral portion of the chucking hole 104 is placed near the outer peripheral edge portion, the protrusion is fitted into the chucking hole 104, and the chucking plate 102 is attached by the magnet. By sucking, the magneto-optical disk or the optical disk can be positioned and held. As described above, the magneto-optical disk or the optical disk held by the disk table 25 is the spindle motor 24.
It is rotated by.

The cartridge positioning pins 17, 18
Is projected on the chassis 16 and the recording / reproducing disc cartridge 1 is mounted on the chassis 16.
When the 20 or the reproduction-only disc cartridge 121 is placed, the cartridges 105 and 116 are fitted into the front and rear positioning holes 109 and 110, respectively, and the cartridges 105 and 116 are positioned.

An optical pickup device 21 is arranged on the lower surface side of the chassis 16. The optical pickup device 21 has a light source such as a laser diode, various optical devices for guiding a light flux emitted from the light source, and a light receiving element, and irradiates the magneto-optical disc and the optical disc with a light flux through an objective lens, Information signals can be read from the magneto-optical disc and the optical disc. The optical pickup device 21 is movably supported along a pair of guide shafts 22 and 23 that are arranged parallel to each other on the lower surface side of the chassis 16. By moving the optical pickup device 21 along the guide shafts 22 and 23, the information signals can be read from the entire signal recording area of the magneto-optical disk and the optical disk rotated by the spindle motor 24. It can be done.

A magnetic head device 31, which is a head device, is attached to the optical pickup device 21 via a connecting arm 26 and a head arm 28. The connecting arm 26 is attached to the optical pickup device 21 at the base end side, and extends at the front end side rearward of the rear end edge of the chassis 16. This connecting arm 26
The front end side of is bent upward. A base end side of the head arm 28 is attached to a tip end portion of the connecting arm 26 via a leaf spring 27 so as to be swingable in a thickness direction of the leaf spring 27.

As shown in FIG. 8, the magnetic head device 31 is attached to the distal end side of the head arm 28 via the gimbal spring 30 so as to face downward, and the objective lens of the optical pickup device 21 is attached. Is facing. The magnetic head device 31 includes the head arm 28.
Is oscillated by the displacement of the leaf spring 27, so that it is moved in the direction of contact with and away from the objective lens. The gimbal spring 30 is a thin leaf spring, and is displaced in the thickness direction to allow the magnetic head device 31 to move.
It is possible to move up and down. In addition, a stopper arm 29 is integrally connected to the tip end side of the head arm 28 and extends to the front end side. The tip end side of the stopper arm 29 is bent to a position above the gimbal spring 30 to form a hook 39. And
A hook holding member 33 attached to the top surface of the gimbal spring 30 on the tip side is hooked on the hook 39. The latch holding member 33 is a thin thread-like member having a weak elastic force, and both ends thereof are fixed to the gimbal spring 30. That is, the latch holding member 33 has a weaker elastic force than the gimbal spring 30 and can be displaced, and the central portion thereof can extend above the gimbal spring 30. The central portion of the latch holding member 33 is latched to the latch portion 39.

The gimbal spring 30 has a cutout portion 63 for preventing the hook portion 39 from coming into contact with the gimbal spring 30 and a through hole portion 64 for adjusting the elastic force of the gimbal spring 30. It is provided.

A cartridge holder 19 serving as a holder member is arranged on the chassis 16 and interposed between the optical pickup device 21 and the magnetic head device 31. That is, the head arm 28 is located between the upper lid 2 and the cartridge holder 19. The cartridge holder 19 is formed in a thin casing shape into which the recording / reproducing disc cartridge 120 and the reproduction-only disc cartridge 121 can be inserted from the front side which is opened. The cartridge holder 19 is rotatably supported at its rear end side with respect to a supporting piece portion provided on the rear side of the chassis 16 via a cartridge holder supporting shaft 20. As shown in FIGS. 3 and 6, the cartridge holder 19 is set to the unloading position, which is a position rotated upward from the chassis 16, so that each of the disk cartridges 120 from the front side is moved. , 121 insertion operation and the respective disk cartridges 12 to the front side
It is designed so that 0, 121 can be taken out. The disk cartridges 120, 12 from the front side
The cartridge holder 19 in which 1 is inserted holds the inserted disk cartridges 120 and 121. The disc cartridges 120 and 121 are inserted into the cartridge holder 19 to open the shutter members 106 and 117.

The cartridge holder 19 is
A through hole 34 for allowing the head device 31 to enter the upper surface side
And the disk table 25 and the cartridge positioning pins 17 and 18 on the lower surface side.
And an opening for allowing the optical pickup device 21 to face the disk cartridges 120 and 121 as the disk enters. This cartridge holder 19
When the disk cartridges 120 and 121 are held, the disk cartridges 120 and 121 are held at the loading position, which is a position rotated to the lower side in the vicinity of the chassis 16. The pins 17 and 18 and the disc table 25 are mounted. That is, the disk cartridges 120 and 121 held in the cartridge holder 19 set to the loading position are the cartridges 10
5, 116 to the cartridge positioning pins 17, 1
8 and the magneto-optical disk or the optical disk is positioned and held by the disk table 25.

The lower surface of the upper lid 2 is provided with a hook-shaped projection piece (not shown) located on the front side for lifting the cartridge holder 19 upward. An engaging piece (not shown) is provided on the front side of one side of the cartridge holder 19 in correspondence with the hook-shaped protruding piece. When the cartridge holder 19 is at the loading position and the upper lid 2 is at the closing position for closing the upper surface portion of the housing body 1, the tip end side portion of the hook-shaped projecting piece is the engaging piece. On the lower side, that is, on the side of the chassis 16 with a predetermined distance from the engaging projection. When the upper lid 2 is rotated upward, first, the tip end side portion of the hook-shaped protruding piece comes into contact with the lower surface portion of the engaging piece. At this time, the cartridge holder 19 is still in the loading position.
Then, when the upper lid 2 is further rotated upward,
The cartridge holder 19 is configured such that the engaging piece is suspended by the hook-shaped protruding piece, and as shown by an arrow B in FIGS. 3 and 6, as shown in FIGS. Is rotated to. At this time, a wider gap is formed between the upper lid 2 and the cartridge holder 19 than when the upper lid 2 is in the closed position. In this way, the gap formed between the upper lid 2 and the cartridge holder 19 when the tip end side portion of the hook-shaped projection and the engaging piece come into contact with each other is such that the cartridge holder 19 is located above the loading position. It is maintained at a constant distance when rotated to the unloading position.

When the upper lid 2 in the open position is rotated downward, first, the cartridge holder 19 is rotated to the loading position, and then the tip side portion of the hook-shaped projection and the engaging piece. Are separated from each other, and the upper lid 2 is brought to the closed position.

A first slider 49 is attached to one side surface of the cartridge holder 19. The first slider 49 is slidable in the front-rear direction by inserting a pair of front and rear support pins 48 and 47 projectingly provided on one side surface of the cartridge holder 19 so as to correspond to the pair of front and rear elongated holes. It is supported. One end side of a substantially linear link 52 is rotatably attached to the front end side of the first slider 49 via a support shaft 51. The other end of the link 52 is attached to the chassis 16
It is rotatably attached via a support shaft 53. The first slider 49, as shown in FIGS. 5 and 6,
In association with the rotation of the cartridge holder 19 with respect to the chassis 16, the link 52 is slid in the front-rear direction. That is, when the cartridge holder 19 is in the loading position, the first slider 49 is set to the front position as shown in FIG. 5, and when the cartridge holder 19 is in the unloading position, the first slider 49 shown in FIG. It is slid rearward as indicated by the middle arrow H, and is in the rearward position as shown in FIG. On the front end side of the first slider 49, there is provided an abutting protrusion piece 50 protruding upward.

A second slider 41, which constitutes a head operating member, is attached to one side portion of the upper surface of the cartridge holder 19. This second slider 41
Is formed by inserting a pair of front and rear support pins 45 and 46 projectingly provided on the upper surface of the cartridge holder 19 in correspondence with the pair of front and rear elongated holes, and thereby to set the first position to the rear position and the second position. It is supported so as to be slidable in the front-rear direction across the front side position which is the position. This second slider 4
Reference numeral 1 denotes a spring hooking piece 44, and a pulling member serving as a biasing member stretched between the spring hooking piece 44 and the spring hooking pin 43 planted on the upper surface of the cartridge holder 19. As indicated by an arrow F in FIG. 5, the coil spring 42 urges the front side. In addition, this second slider 41
Has an abutment piece 62 projecting from the abutment piece 50 of the first slider 49 at the rear side. An engagement recess 58 is provided on the rear end side of the second slider 41.

A slide plate 32, which constitutes a head operating member together with the second slider 41, is attached to the second slider 41. This slide plate 32
Opens the through hole 34 in the upper surface portion of the cartridge holder 19 when the second slider 41 is at the front side position, and opens the through hole 34 when the second slider 41 is at the rear side position. It is designed to close the lid. The first slider 49 does not hinder the second slider 41 from sliding forward and backward when the cartridge holder 19 is at the loading position and is moved to the front side. Holder 19
6 is in the unloading position and moved rearward, as shown in FIG.
Thus, the contact piece 62 is pressed rearward to hold the second slider 41 at the rear position.

A discriminating arm 55 serving as a discriminating member is rotatably attached to the rear side position of the cartridge holder 19 via a support shaft 54. The discriminating arm 55 extends to the front side and has an engaging pin 57 on the tip side.
And a second arm portion that is bent and is inserted below the cartridge holder 19. A discrimination pin 56 is provided on the second arm portion so as to project upward. The discriminating pin 57 is inserted into the cartridge holder 19 and is inserted into the cartridge holder 19.
It is located at a position facing the disc identification recesses 111 and 118 of 20, 121. The discrimination arm 55 has a spring hooking piece 61, and the spring hooking piece 61 and a spring hooking pin 59 planted on the upper surface of the cartridge holder 19.
As indicated by an arrow G in FIG. 5, a tension coil spring 60 stretched between and is rotationally biased in a direction to move the discrimination pin 57 to the front side. The engagement pin 5
When the second slider 41 is at the rear side position, 7 is engaged with the engaging recess 58 of the second slider 41 by the biasing force of the tension coil spring 60.

The discriminating arm 55 is provided with the engaging pin 57.
In the state in which is engaged with the engaging recess 58, the second slider 41 is held at the rear position against the biasing force of the tension coil spring 42. Further, the discriminating arm 55, when the reproduction-only disc cartridge 121 is inserted into the cartridge holder 19, as shown in FIG.
Since the discriminating pin 56 is inserted inside, it is not rotated by the read-only disc cartridge 121. When the recording / reproducing disc cartridge 120 is inserted into the cartridge holder 19, the discriminating arm 55 has a shallow depth of the magneto-optical disc identifying concave portion 111 as shown in FIG. The discriminating pin 56 cannot be inserted into the magnetic disc identifying concave portion 111, and the discriminating pin 56 is pressed by the recording / reproducing disc cartridge 120, so that the tension coil spring as shown by an arrow J in FIG. It is rotated against the biasing force of 60. At this time, the engagement pin 57 releases the engagement with the engagement recess 58.

A head arm upper 37 is attached to a rear side position on the cartridge holder 19 and is located below the head arm 28. The head arm upper 37 can be pivotally operated in a contacting / separating direction with respect to an upper surface portion of the cartridge holder 19 via a support shaft 38 provided on one side surface portion of the cartridge holder 19. This head arm upper 37
When the cartridge holder 19 is at the loading position, it is rotated in a direction approaching the cartridge holder 19 and separated from the head arm 28, as shown in FIGS. 2 and 4. As shown in FIG. 3, when the cartridge holder 19 is in the unloading position, the head arm upper 37 is separated from the cartridge holder 19 as shown by an arrow C in FIG. The head arm 28 is rotated and is brought into contact with the head arm 28, and the head arm 28 is separated from the cartridge holder 19.

In the recording and reproducing apparatus having the head supporting device according to the present invention as described above,
In the initial state, as shown in FIGS. 2 and 5, the cartridge holder 19 is in the loading position, the second slider 41 is in the rear position, and the engaging pin 57 is in the engaging recess 58. Is engaged with. At this time, the magnetic head device 31 moves the slide plate 32.
The head arm upper 37 is placed and supported on the head arm 37.
Is not in contact with the head arm 28, the gimbal spring 30 is displaced upward by the slide plate 32 so as to be an extension of the head arm 28 and the head arm 28 of the magnetic head device 31. The distance in the height direction is shortened. At this time, the magnetic head device 31 is blocked by the slide plate 32 and does not enter the cartridge holder 19.

When the cartridge holder is set to the unloading position, the engagement pin 57 remains engaged with the engagement recess 58 as shown in FIGS. 3 and 6, and the second slider is engaged. 41 is maintained in the rear position. At this time, the head arm upper 37 rotates the head arm 28 upward, and the gimbal spring 3
0 is displaced below the extension of the head arm 28 while displacing the engagement holding member 33 in the vertical direction. At this time, the magnetic head device 31 is raised to a position slightly separated from the slide plate 32. At this time, the disc holders 120 and 121 can be inserted into the cartridge holder 19.

The reproduction-only disc cartridge 121
2 is inserted into the cartridge holder 19 and the cartridge holder 19 is set to the loading position, the discrimination arm 55 is not rotated.
Also, as shown in FIG. 5, the engagement pin 57 engages with the engagement recess 58, and the second slider 41 is held at the rear position. Therefore, at this time, the magnetic head device 31 is still placed and supported on the slide plate 32. The magnetic head device 31 is blocked by the slide plate 32, and the cartridge holder 19
Never enter inside. The reproduction-only disc cartridge 121 is mounted on the chassis 16, and the objective lens of the optical pickup device 21 is opposed to the optical disc. In this recording and reproducing apparatus, the reproduction-only disc cartridge 121 is mounted on the chassis 16 as described above, so that the information signal from the optical disc of the reproduction-only disc cartridge 121 can be reproduced. it can.

The reproduction-only disc cartridge 121
Is mounted on the chassis 16 as shown in FIG.
Further, as shown in FIG. 6, when the cartridge holder 19 is rotated to the unloading position, the reproduction-only disc cartridge 121 can be taken out from the cartridge holder 19. Then, the cartridge holder 19 is returned to the initial state by being rotated to the loading position.

When the recording / reproducing disc cartridge 120 is inserted into the cartridge holder 19 and the cartridge holder 19 is set to the loading position, the discriminating arm 55, as shown in FIGS. The discriminating pin 56 is pressed by the recording / reproducing disc cartridge 120 and rotated. Therefore, the second slider 41 has the engagement pin 57.
Is disengaged from the engaging recess 58 and is slid to the front position by the biasing force of the tension coil spring 42. The through hole 34 is opened by sliding the second slider 41 to the front side shown by the arrow D in FIG. The magnetic head device 31 enters the cartridge holder 19 through the through hole 34 by opening the through hole 34. At this time, the gimbal spring 30 is displaced downward while displacing the engagement holding member 33 in the vertical direction. The magnetic head device 31 is in sliding contact with the magneto-optical disk. That is, in the recording / reproducing disc cartridge 120 mounted on the chassis 16, the objective lens of the optical pickup device 21 is opposed to the lower surface of the magneto-optical disc, and The magnetic head device 31 is slidably contacted with the upper surface portion.

In this recording / reproducing apparatus, the recording / reproducing disc cartridge 120 is mounted on the chassis 16 to record an information signal on the magneto-optical disc of the recording / reproducing disc cartridge 120. And replay can be performed.

When the recording / reproducing disc cartridge 120 is mounted on the chassis 16 and the cartridge holder 19 is rotated to the unloading position, as shown in FIGS. The first slider 49 slides to the rear side to move the second slider 41 to the rear position.
At this time, since the head arm 28 is rotated upward by the head arm upper 37, the slide plate 32 enters the lower side of the magnetic head device 31. The recording and reproducing disk cartridge 120
Can be taken out from the cartridge holder 19. When the recording / reproducing disc cartridge 120 is taken out of the cartridge holder 19 in the state where the second slider 41 is moved to the rear side position, the discrimination arm 55 returns to the initial position. The engaging pin 5 is provided in the engaging recess 58.
7 is engaged and held at the rear side position. Then, the cartridge holder 19 is returned to the initial state by being rotated to the loading position.

Incidentally, in the head supporting device according to the present invention constructed as described above, the magnetic head device 31 is used.
In the state of being supported by the slide plate 32, is protected by the slide plate 32, and there is no possibility of being damaged or damaged. Further, when the magnetic head device 31 is slidably contacted with the slide plate 32, the attached dust is removed.

[4] Another Example of Configuration of Recording and Reproducing Apparatus As shown in FIGS. 11 and 12, the head supporting apparatus according to the present invention has the second slider 41 and the slide plate as head operating members. Instead of 32, a slide plate 70 may be provided, and a discriminating arm 76 serving as a discriminating member may be integrally formed on the slide plate 70. In this case, the first slider 49 and the determination arm 55 in the above example are not provided.

The slide plate 70 has a pair of front and rear support pins 71, 7 planted on the cartridge holder 19.
2, a pair of front and rear elongated holes are inserted correspondingly, and on the cartridge holder 19, a front side position which is a first position shown in FIG. 11 and a rear side position which is a second position shown in FIG. It is attached so as to be slidable in the front-rear direction over. The slide plate 70 has a through hole 78. When the slide plate 70 is positioned at the rear side, the through hole 78 is superposed on the through hole 34 of the cartridge holder 19, and the through hole 34 is opened. To do. When the slide plate 70 is at the front side position, the through hole portion 78 is located on the front side of the through hole 34 of the cartridge holder 19 so that the through hole 34 is at least the magnetic head device. Close the lid to the position corresponding to 31 from the rear side. The slide plate 70 has a spring retaining portion 75, and the spring retaining portion 75 and the cartridge holder 1 are provided.
As shown by an arrow L in FIG. 11, a tension coil spring 74 stretched between the spring retaining pin 73 and the spring retaining pin 73 is biased to the front side.

The discriminating arm 76 is bent and formed,
It has entered the lower side of the cartridge holder 19.
A discriminating pin 77 is provided on the distal end side of the discriminating arm 76 so as to extend upward. The discriminating pin 77 has entered the cartridge holder 19 and is located at a position facing the disc identification recesses 111 and 118 of the disc cartridges 120 and 121 inserted into the cartridge holder 19.

When the reproduction-only disc cartridge 121 is inserted into the cartridge holder 19,
As shown in FIG. 11, the discriminating pin 77 enters the optical disc identifying recess 118, and the slide plate 70 is
It remains in the front position. The slide plate 70 positioned at the front side supports the magnetic head device 31 in the vicinity of the rear edge of the through hole 78,
The magnetic head device 31 is prevented from entering the through hole 34. In this state, the cartridge holder 19
When is rotated to the loading position, the recording and reproducing apparatus having this head supporting device can reproduce the information signal from the reproduction-only disc cartridge 121.

Then, when the recording / reproducing disc cartridge 120 is inserted into the cartridge holder 19, as shown in FIG.
12 does not enter the magneto-optical disc identifying recess 111, the slide plate 70 presses the discriminating pin 77 by the recording and reproducing disc cartridge 120, and as shown by an arrow M in FIG. Moved to the side position. The slide plate 70 positioned at the rear side allows the through hole portion 78 to overlap the through hole 34 and allows the magnetic head device 31 to enter the through hole 34. In this state, when the cartridge holder 19 is rotated to the loading position, in the recording / reproducing apparatus, the recording / reproducing disc cartridge 1
It is possible to record an information signal with respect to 20 and reproduce the information signal from the recording and reproducing disk cartridge 120.

In the head support device according to the present invention, as shown in FIGS. 9 and 10, the engagement holding member 33 has one end portion 65 fixed to the gimbal spring 30 and the other end portion to be covered and expanded. It may have a diameter portion 67. The hooked expanded diameter portion 67 has a diameter larger than that of the other portion of the engagement holding member 33. Further, the engagement holding member 33 has a tip end side portion inserted into an annular support portion 66 arranged on the gimbal spring 30. The engagement holding member 33 has a linear shape and can be bent and displaced by an elastic force weaker than the elastic force of the gimbal spring 30. When the engagement holding member 33 maintains the linear shape, the locked expanded diameter portion 67 and the annular support portion 66 are separated from each other.

When the central portion of the engagement holding member 33 is pulled up by the engagement portion 39 of the stopper arm 29, as shown in FIG. 10, the engagement expanded diameter portion 67 is moved to the annular support portion 66. Until the engaged expanded diameter portion 67 is engaged with the annular support portion 66, the central portion is bent and displaced upward. Then, when the hooking holding member 33 is released from the lifting by the hooking portion 39, it is returned to the linear shape by the elastic restoring force as shown in FIG.

Further, in the head supporting device according to the present invention, the head operating member is not limited to the one for mounting and supporting the magnetic head device 31 as in each of the above-mentioned examples, and the gimbal spring 30 is provided. It is also possible to displace the gimbal spring 30 and prevent the magnetic head device 31 from entering the through hole 34 by supporting.

[0069]

As described above, in the head supporting device according to the present invention, the gimbal spring for displacing the recording medium inserted therein and movably arranged on the holder member for holding the recording medium displaces the gimbal spring. And a head operation in which the head device is moved between a first position that prevents the head device from entering the holder member and a second position that allows the head device to enter the holder member. The member is
Moving operation to either the first or the second position according to the position of the discriminating member that is moved corresponding to the depth of the medium type discriminating hole provided in the recording medium inserted into the holder member. To be done.

Therefore, in this head supporting device, the head operating member is set to the first position according to the type of the recording medium, so that the recording medium inserted into the holder member collides with the head device. Can be reliably prevented.

Further, in the above-described head support device, the head operating member is biased by the biasing member in the direction toward the second position, and the discriminating member is the first head operating member. In the case where the head operating member is held and held at the position, and the head operating member is released from the hook when the medium type determining hole is moved corresponding to the depth, the head operating member is It can be configured to move a distance sufficiently larger than the moving distance of the discriminating member due to the difference in the depth of the medium type discriminating hole.

Further, in the above head supporting device,
When the head operating member and the discriminating member are integrally provided in series, it is possible to reliably prevent the recording medium inserted into the holder member from colliding with the head device with a simple structure. .

The head supporting device according to the present invention is
A head arm, a gimbal spring whose base end side is supported by the head arm, a head device attached to the tip end side of the gimbal spring, and a tip end of the gimbal spring that has a weaker elastic force than the gimbal spring. Attached to the side of the gimbal spring and capable of extending to the upper side of the gimbal spring, and a base portion supported by the head arm to extend to the upper side of the gimbal spring and extend to the tip side. And a gimbal spring approaching the stopper arm while ensuring a sufficient vertical separation distance between the stopper arm and the head device. By displacing the latch holding member, the thickness in the vertical direction can be reduced.

That is, according to the present invention, in a recording and / or reproducing apparatus, there is provided a head supporting device for supporting a head device which is moved forward and backward with respect to a holder member which holds a recording medium, and which is inserted into and operated by the holder member. (EN) A head support device capable of reliably preventing a recording medium from colliding with the head device and reducing the size of the recording and / or reproducing device in the advancing / retreating direction of the head device. It is possible.

[Brief description of drawings]

FIG. 1 is a perspective view showing an external configuration of a recording / reproducing apparatus having a head supporting device according to the present invention.

FIG. 2 is a side view showing an internal configuration of the recording and reproducing apparatus.

FIG. 3 is a side view showing an internal configuration of the recording and reproducing apparatus in a state where a lid opening operation is performed.

FIG. 4 is a side view showing an internal configuration in a state where a recording / reproducing disc cartridge is mounted on the recording / reproducing apparatus.

FIG. 5 is a perspective view showing an internal configuration of the recording and reproducing apparatus.

FIG. 6 is a perspective view showing an internal configuration of the recording / reproducing apparatus in a state where a lid opening operation is performed.

FIG. 7 is a perspective view showing an internal configuration in a state where a recording / reproducing disc cartridge is mounted on the recording / reproducing apparatus.

FIG. 8 is an enlarged perspective view of an essential part showing the configuration of the essential part of the head support device.

FIG. 9 is an enlarged perspective view of an essential part showing a configuration of a latch holding member which is an essential part of the head support device.

FIG. 10 is an enlarged perspective view of an essential part showing a state where the latch holding member is displaced.

FIG. 11 is a perspective view showing an internal configuration of a recording / reproducing apparatus having a head supporting device according to the present invention and having a configuration different from that shown in FIGS. 2 to 7.

12 is a perspective view showing an internal structure of the recording / reproducing apparatus shown in FIG. 11 with a recording / reproducing disc cartridge mounted.

FIG. 13 is a perspective view of the structure of a recording and reproducing disk cartridge used as a recording medium in the head supporting device as seen from the upper surface side.

FIG. 14 is a perspective view of the structure of a read-only disc cartridge used as a recording medium in the head support device as seen from the upper surface side.

FIG. 15 is a perspective view showing the configuration of the recording / reproducing disc cartridge as viewed from the bottom side.

FIG. 16 is a perspective view showing the configuration of the reproduction-only disc cartridge as viewed from the bottom side.

[Explanation of symbols]

19 ・ ・ ・ ・ ・ ・ ・ ・ Cartridge holder 28 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Head arm 29 ・ ・ ・ ・ ・ ・ ・ ・ ・ Stopper arm 30 ・ ・ ・ ・・ ・ ・ ・ ・ ・ ・ ・ Gimbal spring 31 ・ ・ ・ ・ ・ ・ ・ ・ Magnetic head 32, 70 ・ ・ ・ ・ ・ ・ Slide plate 33 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・Holding member 42 .................. Pull coil spring 55, 76 .. Discrimination arm 56, 77 .. ..Optical-magnetic disc identifying recess 118 ........ Optical disc identifying recess 120 .................. Recording and reproducing disc cartridge 121 ..・ ・ ・ ・ ・ Play-only disc cartridge

Claims (4)

[Claims] 1. A holder member, into which a recording medium is inserted and which holds the recording medium, and a gimbal spring, which is arranged in the vicinity of the holder member, enable contact with and separation from the recording medium held by the holder member. A head device that is made and supported, a first position that is movably disposed on the holder member, that displaces the gimbal spring, and that prevents the head device from entering the holder member, and the head device. Of the head operating member which is operated to move over to a second position enabling the entry into the holder member, and the depth of the medium type discriminating hole provided in the recording medium inserted into the holder member. Correspondingly, a discriminating member that is operated to move is provided, and the head operating member is
A head support device which is moved and operated to either the first or second position. 2. A head arm, a gimbal spring whose base end side is supported by the head arm, a head device attached to the tip end side of the gimbal spring, and a displaceable member having a weaker elastic force than the gimbal spring. The holding holding member is attached to the tip end side of the gimbal spring and can extend to the upper side of the gimbal spring, and the base end side is supported by the head arm and extends to the upper side of the gimbal spring. A head support device having a stopper arm on the tip side to which the above-mentioned latch holding member is latched. 3. The head operating member is urged by the urging member in the direction toward the second position, and the discriminating member holds and holds the head operating member at the first position, and also the medium. 2. The head supporting device according to claim 1, wherein when the moving operation is performed corresponding to the depth of the type determining hole, the hooking operation on the head operating member is released. 4. The head supporting device according to claim 1, wherein the head operating member and the discriminating member are integrally connected.