JPH0643825U - Locking device for optical head transfer table - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a locking device for an optical head transfer table, which can securely fix the optical head when a recording disk is not loaded. A loading mechanism for moving a magneto-optical disk between a loading position and an unloading position, an optical head carriage movable in the radial direction of the magneto-optical disk at the loading position, and a magneto-optical disk mounted on the optical head carriage. In an optical information recording / reproducing apparatus including an optical head for recording and / or reading information with respect to a lock pin provided on an optical head carriage, a lock plate movable toward and away from the lock pin, and An interlocking cam mechanism is provided that moves the lock plate in contact with and separates from the lock pin by interlocking with the loading mechanism. The interlocking cam mechanism separates the lock plate from the lock pin when the magneto-optical disk is positioned at the loading position. The optical disk to unlock it. Locking device for the optical head carriage that moves the lock plate toward the lock pin when it is in the holding position

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device that locks an optical head transfer base movable in a radial direction of a recording disk, to which an optical head for recording and / or reading information on a recording disk is transferred.

[0002]

[Prior art and its problems]

 In an optical reproducing apparatus, for example, an optical disk apparatus, in order to record / reproduce information at a high speed, an optical head carriage (head transfer table) on which an optical head is mounted is often moved by a linear motor. Can move freely within its range of motion. Therefore, for example, when the optical disk device is transported, the optical head carriage may move within a movable range due to vibration or the like and hit a fixed part or the like, which may cause inconvenience such as damage to the optical system. In order to avoid this inconvenience, it is sufficient to fix the optical head carriage within its movable range during transportation, but it is not realistic to fix the optical head carriage by opening the device. The method of fixing from the outside with screws or the like had poor workability, and there were also inconveniences such as forgetting to fix and transporting.

Therefore, there is a strong demand for a device that locks the optical head when a recording disk is not loaded to improve the impact resistance during transportation.

[0004]

[The purpose of the device]

 The present invention has been made in view of such a problem, and an object thereof is to provide a lock device for an optical head transfer table, which can securely fix the optical head when a recording disk is not loaded. I am trying.

[0005]

[Outline of the device]

 According to the present invention, which achieves the above object, there is provided a loading mechanism for moving a recording disk to a loading position and an unloading position; an optical head transfer table movable in the radial direction of the recording disk at the loading position; An optical information recording / reproducing apparatus equipped with an optical head for recording and / or reading information on and from the recording disk, comprising: a lock pin provided on the optical head transfer table; A lock member that can be separated and moved; and an interlocking cam mechanism that moves the lock member into contact with and separate from the lock pin by interlocking with the loading mechanism. When the lock position is reached, move the lock member in the direction away from the lock pin and Disk is characterized over SL locking member to move toward the lock pin when it is positioned in the unloading position.

[0006]

【Example】

 The present invention will be described below with reference to the illustrated embodiments. FIG. 15 is a plan view showing a magnetic field modulation overwrite type magneto-optical disk device 20 to which the present invention is applied, and FIG. 1 is a side view thereof. The magneto-optical disk device 20 includes a cartridge holder 22 for holding a disk cartridge 11 in which the magneto-optical disk 12 is loaded, an optical head base 21, and a linear bearing 51 (see FIG. 4 to FIG. 6), the optical head carriage 23 for moving the optical head 24 in the radial direction of the magneto-optical disk 12 and the magnetic head 25 attached via the flexure 15 are moved in the radial direction of the magneto-optical disk 12. It has a magnetic head carriage 26. Reference numeral 54 in FIG. 15 is a shutter of the disk cartridge 11, and 12a is the disk center of the magneto-optical disk 12.

The cartridge holder 22 is configured to be movable up and down with respect to the optical head 24. The cartridge holder 22 is at a position away from the optical head 24 when the disk cartridge 11 is attached and detached, and when the disk cartridge 11 is inserted, the optical head 24 is moved. It is possible to set the magneto-optical disk 12 at a predetermined position by moving it in the direction close to.

Outside the cartridge holder 22, the guide roller 50 provided on the optical head base 21 is slidable in the directions of arrows A and B in FIG. 1 to the left and right with respect to the moving direction of the disk. A guide cam plate 35 arranged is provided. The left and right guide cam plates 35 respectively have substantially crank-shaped holder cam grooves 40 and 42 and magnetic head cam grooves 41 and 43 formed at four positions thereof. Further, left and right fixed cam plates 49 are provided outside the proposed cam plate 35, and the left and right fixed cam plates 49 have holder cam grooves 40 and 42 of the left and right guide cam plates 35 and a magnetic head. Vertical guide cam grooves 45, 47, 46 are formed in the upper and lower directions so as to correspond to the cam grooves 41.

Cam pins 36 and 38 are provided on the left and right side surfaces of the cartridge holder 22 with respect to the disc movement direction, and the cam pins 36 are inserted into the holder cam groove 40 and the vertical guide cam groove 45. The cam pin 38 is inserted into the holder cam groove 42 and the vertical guide cam groove 47. Further, cam pins 37 and 39 are provided on the left and right side surfaces of the magnetic head base 28. The cam pins 37 are inserted into the magnetic head cam grooves 41 and the vertical guide cam grooves 46, and the cam pins 39 are magnetic. It is inserted in the cam groove 43 for the door.

The holder cam grooves 40 and 42 are unloading portions 40 a and 42 a that hold the cam pins 36 and 38 at the initial position of the guide cam plate 35 shown in FIG. 1 to hold the disc cartridge 11 in the unloading position. When the guide cam plate 35 is initially moved, it has moving portions 40b and 42b that guide the cam pins 36 and 38 to move the disc cartridge 11 to the loading position and hold it at the same position. The holder cam grooves 40 and 42 are formed substantially horizontally, and have loading portions 40c and 42c for holding the disc cartridge 11 at the loading position while allowing the cam pins 36 and 38 to move idly without moving up and down.

The magnetic head cam grooves 41 and 43 hold the cam pins 37 and 39 at the initial position of the guide cam plate 35 shown in FIG. 1 to hold the magnetic head 25 (magnetic head carriage 26) at the unloading position. The unloading portions 41a, 43a and the cam pins 37, 39 are guided during the initial movement of the proposed cam plate 35 to move the magnetic head 25 to the intermediate step portions 41c, 43c which are intermediate positions between the unloading position and the loading position. It has moving parts 41b and 43b to be moved. The magnetic head cam grooves 41 and 43 further include moving portions 41d and 43d for guiding the cam pins 37 and 39 to move the magnetic head 25 to the loading position when the guide cam plate 35 moves following the initial movement. It has loading portions 41e and 43e for holding the magnetic head 25 at the loading position while holding 37 and 39.

A rack plate 59 and a switch operating plate 60 are fixed to the guide cam plate 35. Further, the apparatus main body is provided with a drive motor 61 and a gear box 62 for transmitting the rotation of the drive motor 61, and the rotation of the drive motor 61 is linearly moved to the rack plate 59 via the pinion gear 63. Transmitted. The drive motor 61 is configured such that when the disk cartridge 11 is loaded into the cartridge holder 22 and is pressed in the loading direction, the drive motor 61 is driven to rotate normally through an interlocking circuit (not shown).

The device body is provided with first, second and third detection switches 65, 66 and 67 corresponding to the switch operation plate 60. These detection switches 65, 66, 67 have switch levers 65a, 66a, 67a, respectively. The detection switches 65, 66, 67 are turned on or off by pressing or releasing the switch levers 65a, 66a, 67a by the switch operating plate 60 that moves together with the guide cam plate 35, and based on this, the guide switches are moved. The position of 35 is detected. By this detection, it is possible to detect the current state of the disk cartridge 11 and the magnetic head base 28.

That is, in the switch operation plate 60, the first detection switch 65 is turned off and the second detection switch 66 and the third detection switch 67 are turned on in the state of FIG. The first detection switch 65 and the third detection switch 67 are turned off and the second detection switch 66 is turned on, and in the state of FIG. 3, the first detection switch 65 is turned on and the second detection switch 66 and the second detection switch 66 are turned on. The third detection switch 67 is turned off.

By discriminating these different bit signals by a discriminating circuit (not shown), the magneto-optical disc device 20, the magnetic head 25 and the disc cartridge 11 are both in the unloading position, and the disc cartridge 11 can be attached and detached. A removable state, the disc cartridge 11 is located at the loading position and the magnetic head 25 is located between the unloading position and the loading position, and a reproducible state in which reproduction is possible using only the optical head 24; The magnetic head 25 can also discriminate which of the recordable / reproducible states is set as the loading position.

The magneto-optical disk 12 used in this embodiment can write an optical code signal indicating whether it is a double-sided disk or a single-sided disk, for example, on the control track on the inner peripheral side thereof. The optical code signal is read by the optical head 24 in the state shown in FIG. 2 in which the disk cartridge 11 is at the loading position and the magnetic head 25 stands by at the intermediate position. Based on this, the disc discriminating means 68 (FIG. 15) discriminates whether the loaded magneto-optical disc 12 is for one side or for both sides. When the disc discriminating means 68 discriminates that the magneto-optical disc 12 is for both sides, only the reading by the optical head 24 is performed without further moving the guide cam plate 35. When it is determined that the magneto-optical disk 12 is for single-sided use, the drive motor 61 is driven in the forward direction to further move the guide cam plate 35 in the same direction and move the magnetic head 25 to the loading position. It is configured.

As shown in FIG. 4, the optical head carriage 23 is movably supported along the radial direction of the magneto-optical disk 12 via a linear bearing 51, and is fixed to both ends of the optical head carriage 23. The coil 52 is driven by a linear motor configured by arranging the coil 52 around the magnetic circuit 53. The linear bearing 51 is composed of a fixed member 71, a movable member 72, and a ball 73 interposed between the fixed member 71 and the movable member 72. The fixed member 71 is a member which is attached to the optical head base 21 side and which is formed in a substantially U shape and long, and the movable member 72 is attached to the optical head carriage 23 side and fixed to the fixed member 71. In comparison, it is a member that is narrower, substantially U-shaped, and long. Rolling grooves are formed on the opposite side surfaces of the fixed member 71 and the movable member 72, and a ball 73 is fitted between the facing rolling grooves.

Further, the optical head carriage 23 converges the light flux from the laser light source to the magneto-optical disk 12 by the objective lens, receives the reflected light from the magneto-optical disk 12 at the time of reproduction, reads the magneto-optical recording signal, and records it. At some times, laser light is focused on the magneto-optical disk 12 with a power higher than that during reproduction to raise the temperature of the recording layer to the Curie temperature, and in cooperation with the magnetic head 25, information is overwritten on the recording layer.

The magnetic head carriage 26 is movably supported by a linear bearing 55 attached to the magnetic head base 28 in the radial direction of the magneto-optical disk 12, and is fixed to both ends of the magnetic head carriage 26. It is driven by a linear motor having a coil 56 arranged around a magnetic circuit 57. The linear bear ring 55 is composed of a fixed member 75, a movable member 76, and a ball 77 interposed between the fixed member 75 and the movable member 76. The fixed member 75 is a member that is attached to the optical head base 21 side and that is formed in a substantially U-shape and is long. The movable member 76 is attached to the optical head carriage 23 side and is the fixed member. Compared to 75, it is a member that is narrower, substantially U-shaped, and elongated. Rolling grooves are formed on the opposing side surfaces of the fixed member 75 and the movable member 76, respectively, and balls 77 are fitted between the facing rolling grooves.

As shown in FIG. 1, at the end of the magnetic head carriage 26, two sets of reflective photosensors (photointerrupters) 30 and 31 having both light emitting / light receiving elements are provided. A reflection plate 32 is attached to the tip of the reflection plate holding portion 27 extending in the moving direction of the optical head carriage 23. Both carriages 23 and 26 are set so that the positions of both heads 24 and 25 are aligned when the outputs from the two light receiving elements become equal.

The optical head carriage 23 is also driven in the radial direction of the magneto-optical disk 12 by a signal from a control device (not shown), and the magnetic head carriage 26 is driven by a synchronizing circuit (not shown) to receive two light beams. The position is controlled so that the outputs from the elements are equal. As a result, the magnetic head carriage 26 can be moved in synchronization with the optical head carriage 23.

Next, a lock device for the optical head carriage (optical head transfer table) 23, which is a feature of the present invention, will be described with reference to FIGS. 7 to 9. At the position corresponding to the optical head carriage 23 on the back surface of the optical head base 21, a lock plate (lock member) 104 is attached to the two lock pins 109 provided on the back surface of the optical head carriage 23. On the other hand, a slide guide concave portion 102 is formed to guide the slide so as to move toward and away from the slide guide.

The lock plate 104 has lock teeth 106, which are composed of a plurality of protrusions and are to be engaged with the lock pin 109, at its tip portion, and are formed in the central portion along the sliding direction of the lock plate 104. It has two sliding guide grooves 105, and further has a rectangular moving force transmitting hole 112 and a projection 113 for locking one end of the tension spring 107 at the rear end portion. Further, the sliding guide concave portion 102 corresponds to the two sliding guide grooves 105, two screw holes 120 into which the guide screw 110 inserted in the sliding guide groove 105 is screwed, and the tension spring 107 It has a protrusion 103 for locking the end portion. Further, at the tip of the sliding guide recess 102, a wide projection opening 108 for projecting the lock teeth 106 toward the lock pin 109 of the optical head carriage 23 located on the surface side of the optical head base 21 is provided. Further, a pin floating hole 102a is formed at the rear end portion of the slide guide recess 102.

On the back surface of the optical head base 21, a pin floating notch 122 adjacent to the slide guide recess 102 is further formed, and a screw hole 123 is formed in the vicinity of the pin floating notch 122. The rotating plate 111 is formed in a substantially triangular shape, has an insertion hole 125 through which a screw 124 is inserted in the center thereof, and has drive pins 115 to be inserted into the pin floating notches 122 and lock plates at both ends. The operation pins 114 to be inserted into the moving force transmission holes 112 of 104 are respectively caulked.

Therefore, with the drive pin 115 corresponding to the pin floating notch 122 and the operation pin 114 corresponding to the moving force transmission hole 112 of the lock plate 104 located in the slide guide recess 102, By screwing the screw 124, which is inserted into the insertion hole 125, into the screw hole 123, the drive pin 115 is moved in the pin floating notch 122 and the operation pin 114 is moved in the pin floating hole 102a, so that the rotating plate 111 is screwed. It can be rotated around 124. At this time, the lock plate 104 receives the operation force of the operation pin 114 that rotates in its movement force transmission hole 112, so that the slide guide groove 105 is moved along the guide screw 110 to move the inside of the slide guide recess 102. By sliding, the lock teeth 106 can be moved back and forth from the projecting opening 108 toward the lock pin 109.

On the other hand, as shown in FIGS. 7 and 10, the interlocking cam mechanism having the inclined cam surface 100a and the holding cam surface 100b at the position corresponding to the pin floating notch 122 and the like on the back surface of the connecting plate 81. The cam plate 100 constituting the above is fixed by screws 101. The cam plate 100 is in a position where the inclined cam surface 100a is separated from the drive pin 115 when the magneto-optical disk device 20 is in the removable state described above (FIG. 11), and is in the reproducible state described above. The inclined cam surface 100a moves the drive pin 115 in the direction approaching the optical head carriage 23, and the holding cam surface 100b holds the same position (FIG. 12). When the recording / reproduction is possible, the reproduction is performed. The drive pin 115 is held by the holding cam surface 100b in the same manner as in the enabled state (FIG. 13). Further, as shown in FIG. 9, the rotating plate 111 and the cam plate 100 are located in substantially the same plane together with the lock pin lock pin 109 and the lock plate 104. The thickness in the direction is thin.

In the present magneto-optical disc device 20 having the above-described configuration, when the disc cartridge 11 loaded in the cartridge holder 22 is pressed in the loading direction, the drive motor 61 is driven to rotate normally, and the guide cam plate 35 is moved. Through the rack plate 59, it is moved in the direction of arrow A in the figure from the initial position in FIG. At this initial position, the relationship between the cam plate 100 and the drive pin 115 provided on the rotating plate 111 is as shown in FIG. 11, and the lock plate 104 locks the lock teeth 106 by the urging force of the tension spring 107. Since it is engaged with the pin 109, the optical head carriage 23 is automatically and reliably locked (FIG. 8). Therefore, when the magneto-optical disk 12 is not in use at the unloading position, the lock plate 104 can be automatically moved toward the lock pin 109 to reliably lock the optical head carriage 23. As a result, when the magneto-optical disk device 20 is carried, for example, it can be carried while the movement of the optical head carriage 23 is completely restricted. Therefore, the optical head carriage 23 is moved and fixed within its movable range due to vibration or the like. It is possible to reliably avoid the inconvenience of hitting a part or the like and damaging the optical system.

In the disk cartridge 11 which was in the unloading position at the initial position of the guide cam plate 35, the guide pins 36 and 38 of the disk cartridge 11 are moved up and down along with the initial movement of the guide cam plate 35. It is guided by the moving parts 40b and 42b of the optical disc 42, and is lowered until its lower surface comes into contact with the upper surface 50a of the guide roller 50 which is a reference surface provided on the optical head base 21. At this time, like the disk cartridge 11, the magnetic head 25, which was in the unloading position at the initial position of the guide cam plate 35, has its guide pins 37, 39 with the magnetic head 25 as the guide cam plate 35 moves initially. The guide pins 37 and 39 are guided by the moving portions 41b and 43b of the cam grooves 41 and 43, and the guide pins 37 and 39 are positioned at the intermediate step portions 41c and 43c, respectively, and are made to stand by at an intermediate position between the unloading position and the loading position.

At this time, the relationship between the cam plate 100 and the drive pin 115 provided on the rotating plate 111 is as shown in FIG. 12, and therefore, the rotating plate 111 is rotated to the position indicated by the solid line in FIG. The lock pin 104 is moved by the operation pin 114 in the direction away from the optical head carriage 23, so that the lock teeth 106 are separated from the lock pin 109 to unlock the optical head carriage 23. As a result, the optical head carriage 23 can be freely moved in the radial direction of the magneto-optical disk 12 by the linear bearing 51.

At this time, the first detection switch 65 and the third detection switch 67 are turned off and the second detection switch 66 is turned on by the switch operation plate 60 that moves together with the guide cam plate 35. Based on the above, the guide cam plate 35 moves the cartridge holder 22 to the loading position by means of the holder cam grooves 40 and 42 and moves the magnetic head 25 between the unloading position and the loading position by means of the magnetic head cam grooves 41 and 43. It is detected that it has been moved to. Then, the optical head 24 reads the optical code signal written on the inner circumferential side of the magneto-optical disk optical head carriage 23, and the loaded magneto-optical disk 12 is for one side based on the optical code signal. It is determined whether or not it is for both sides.

As a result, if it is determined that the magneto-optical disk 12 is for both sides, the drive motor 61 is not driven and the guide cam plate 35 is not moved any more, so that only the reproduction using the optical head 24 is possible. It will be in a state. On the other hand, when it is determined that the magneto-optical disk 12 is for single-sided use, the drive motor 61 is driven in the forward direction, whereby the guide cam plate 35 is further moved in the same direction, and the magnetic head 25 is moved to the loading position. Then, recording and reproduction are made possible.

At this time, the relationship between the cam plate 100 and the drive pin 115 provided on the rotating plate 111 is as shown in FIG. Therefore, since the drive pin 115 is still held in the same position by the holding cam surface 100b, the rotary plate 111 remains rotated in the position shown by the solid line in FIG. 8, and the lock plate 104 is separated from the optical head carriage 23. Is moved in the direction, the lock tooth 106 is separated from the lock pin 109, and the optical head carriage 23 is unlocked.

In this embodiment, the lock plate 104 is moved by the cam plate 100 that moves together with the connecting plate 81 to and from the lock pin 109 via the rotating plate 111 and the operation pin 114. As shown in FIG. 5, a crank-shaped guide groove 126 is formed at an appropriate position of the connecting plate 81, and a guide pin 127 is provided at the rear end of the lock plate 104, and the guide pin 127 is moved together with the connecting plate 81. It may be configured to guide by the guide groove 126 and thereby move the lock teeth 106 of the lock plate 104 forward and backward from the lock pin 109.

As shown in FIG. 17, a guide groove 128 having a crank shape, which is opposite to that in FIG. 16, is formed at an appropriate position of the connecting plate 81, and the guide groove 128 is rotated toward the optical head base 21 side. A rotation link 129 that rotates around a fulcrum 130 is provided, and one end of this rotation link 129 is attached to the rear end of the lock plate 104 via a pin 131, and a guide pin 132 provided at the other end. The guide groove 128 is inserted into the guide groove 128, and the guide groove 128 is guided by the guide groove 128 which moves together with the connecting plate 81, whereby the lock teeth 106 of the lock plate 104 are moved forward and backward from the lock pin 109. May be.

[0035]

[Effect of device]

 As described above, according to the present invention, when the recording disc is not in the unloading position and not in use, the lock member can be automatically moved toward the lock pin to reliably lock the optical head transport base. . As a result, when the magneto-optical disk device is carried, for example, it can be carried while the movement of the optical head carriage is completely restricted. It is possible to surely avoid inconveniences such as damage to the optical system due to such problems.

[Submission date] February 16, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

[0006]

【Example】

The present invention will be described below with reference to the illustrated embodiments. FIG. 15 is a plan view showing a magnetic field modulation overwrite type magneto-optical disk device 20 to which the present invention is applied, and FIG. 1 is a side view thereof. The magneto-optical disk device 20 includes a cartridge holder 22 for holding a disk cartridge 11 in which the magneto-optical disk 12 is loaded, an optical head base 21, and a linear bearing 51 (see FIG. 4 to FIG. 6), the optical head carriage 23 for moving the optical head 24 in the radial direction of the magneto-optical disk 12 and the magnetic head 25 mounted via the load beam 15 are arranged in the radial direction of the magneto-optical disk 12. It has a magnetic head carriage 26 for moving. Reference numeral 54 in FIG. 15 is a shutter of the disk cartridge 11, and 12a is the disk center of the magneto-optical disk 12.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

Further, the optical head 24 converges the light flux from the laser light source to the magneto-optical disc 12 by the objective lens, receives the reflected light from the magneto-optical disk 12 at the time of reproduction, reads the magneto-optical recording signal, and records it. At times, laser light is focused on the magneto-optical disk 12 with a power higher than that at the time of reproduction to raise the temperature of the recording layer to the Curie temperature, and in cooperation with the magnetic head 25, information is overwritten on the recording layer.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0022

[Correction method] Change

[Correction content]

Next, a lock device for the optical head carriage (optical head transfer table) 23, which is a feature of the present invention, will be described with reference to FIGS. 7 to 9. At the position corresponding to the optical head carriage 23 on the rear surface of the optical head base 21, a lock plate (lock member) 104 is attached to the two lock pins 109 provided on the rear surface of the optical head carriage 23. On the other hand, a slide guide concave portion 102 is formed for sliding guide so as to move toward and away from the slide guide.

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] 0030

[Correction method] Change

[Correction content]

At this time, the first detection switch 65 and the third detection switch 67 are turned off and the second detection switch 66 is turned on by the switch operation plate 60 that moves together with the guide cam plate 35. Based on the above, the guide cam plate 35 moves the cartridge holder 22 to the loading position by means of the holder cam grooves 40 and 42 and moves the magnetic head 25 between the unloading position and the loading position by means of the magnetic head cam grooves 41 and 43. It is detected that it has been moved to. Then, the optical head 24 reads the optical code signal written on the inner peripheral side of the magneto-optical disk optical head carriage 23, and based on this optical code signal, the disk discriminating means 68 causes the loaded magneto-optical disk. 12 determines whether a double-sided or a single-sided.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0031

[Correction method] Change

[Correction content]

As a result, if it is determined that the magneto-optical disk 12 is for both sides, the drive motor 61 is not driven and the guide cam plate 35 is not moved any more.Magneto-optical disk The device 20 is A state in which only reproduction using the optical head 24 is possibleBecome. On the other hand, when it is determined that the magneto-optical disk 12 is for single-sided use, the drive motor 61 is driven in the normal direction.The magneto-optical disk device 20 isGuide cam plate 35ToMove in the same direction Let me , Magnetic head 25ToMove to loading positionLet, Recordable and playableBecome.

[Brief description of drawings]

FIG. 1 is a side view showing a magneto-optical disk device of this embodiment in a detachable state.

FIG. 2 is a side view showing the magneto-optical disk device of this embodiment in a reproducible state.

FIG. 3 is a side view showing the magneto-optical disk device of the embodiment in a recordable / reproducible state.

FIG. 4 is a diagram showing the magneto-optical disk device of FIG. 1 viewed from the direction of arrow D in FIG.

5 is a diagram showing a state of the magneto-optical disk device of FIG. 2 viewed from the direction of arrow E in FIG.

6 is a diagram showing the magneto-optical disk device of FIG. 3 viewed from the direction of arrow F in FIG.

FIG. 7 is a perspective view showing an exploded state of the locking device of the optical head carriage according to the present invention.

FIG. 8 is a bottom view showing the locking device of the optical head carriage according to the present invention.

FIG. 9 is a sectional view showing a locking device of an optical head carriage according to the present invention.

FIG. 10 is a plan view showing a connecting plate and a cam plate fixed to the connecting plate.

FIG. 11 is a plan view showing a relationship between a cam plate and a cam pin when the magneto-optical disk device is in a removable state.

FIG. 12 is a plan view showing a relationship between a cam plate and a cam pin when the magneto-optical disk device is in a reproducible state.

FIG. 13 is a plan view showing a relationship between a cam plate and a cam pin when the magneto-optical disk device is in a recordable / reproducible state.

14 is a diagram showing the magneto-optical disk device of FIG. 15 as indicated by an arrow G in FIG.
It is a side view which shows a connection plate, a drive motor, and a gear box when it sees from a direction.

FIG. 15 is a plan view showing the entire magneto-optical disk apparatus of the embodiment.

FIG. 16 is a bottom view showing another embodiment of the locking device of the optical head carriage according to the present invention.

FIG. 17 is a bottom view showing still another embodiment of the locking device of the optical head carriage according to the present invention.

[Explanation of symbols]

 11 disk cartridge 12 magneto-optical disk 20 magneto-optical disk device 21 optical head base 22 cartridge holder 23 optical head carriage (optical head transfer table) 24 optical head 35 guide cam plate 102 sliding guide recess 102a pin floating hole 104 lock plate ( Lock member) 106 Lock tooth 105 Sliding guide groove 107 Tension spring 108 Projection opening 109 Lock pin 100 Cam plate 100a Inclined cam surface 100b Holding cam surface 101 Screw 110 Guide screw 111 Rotating plate 112 Moving force transmission hole 114 Operation pin 115 Drive pin 120 Screw hole 122 Pin Floating notch 123 Screw hole 121 Hook 126 Guide groove 127 Guide pin 128 Guide groove 129 Rotation link 130 Rotation fulcrum 131 pin 132 Guide pin

[Procedure amendment]

[Submission date] February 16, 1994

[Procedure correction 6]

[Document name to be corrected] Drawing

[Correction target item name] Figure 15

[Correction method] Change

[Correction content]

FIG. 15

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Isao Okuda 2-36-9 Maenocho, Itabashi-ku, Tokyo Asahi Kogaku Kogyo Co., Ltd.

Claims (5)

[Scope of utility model registration request] 1. A loading mechanism for moving a recording disk to a loading position and an unloading position; an optical head transfer base movable in the radial direction of the recording disk at the loading position; and a recording unit mounted on the optical head transfer base. An optical information recording / reproducing apparatus equipped with an optical head for recording and / or reading information on a disc; a lock pin provided on the optical head transfer table; a lock member capable of moving toward and away from the lock pin; And an interlocking cam mechanism that moves the lock member in and out of contact with the lock pin by interlocking with the loading mechanism;
The interlocking cam mechanism moves the lock member in a direction away from the lock pin when the recording disc is located at the loading position, and the lock member when the recording disc is located at the unloading position. To move the lock head toward the lock pin. 2. The interlocking cam mechanism according to claim 1, wherein the interlocking cam mechanism pivotally moves the lock member toward and away from the lock pin, and the pivoting plate interlocks with the loading mechanism. A locking device for an optical head transfer table having a cam plate. 3. The lock device for an optical head transfer base according to claim 2, wherein the rotating plate and the cam plate are located in substantially the same plane together with the lock pin and the lock member. 4. The loading mechanism according to claim 1, further comprising a connecting plate, and the interlocking cam mechanism includes a crank-shaped guide groove formed in the connecting plate, and the guide groove inserted into the guide groove. A locking device for an optical head transfer table having a guide pin provided on the lock member, which guides the lock member to move the lock member toward and away from the lock pin. 5. The loading mechanism according to claim 1, further comprising a connecting plate, and the interlocking cam mechanism pivotally supports a crank-shaped guide groove formed on the connecting plate and one end of the lock member. A locking device for an optical head transfer table, which has a rotation link rotatably supported in the center and a guide pin provided at the other end of the rotation link and inserted into the guide groove.