JP2955752B2 - Recording disk drive device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording cassette in which a recording medium such as a floppy disk is rotatably housed in a casing, and is detachably mounted in an apparatus. The present invention relates to a disk drive device that magnetically records or reproduces various data. 2. Description of the Related Art In general, a drive apparatus of this type couples a floppy disk to a spindle connected to a drive motor, and scans a recording track on a rotating floppy disk with a magnetic head (transducer). Recording or playback. Conventionally, such an apparatus is disclosed, for example, in JP-A-56-11.
As shown in Japanese Patent No. 1173, a cassette holder for inserting and removing a recording cassette is guided to the apparatus frame in a vertically movable manner, and this holder is supported by a slidable vertically inclined cam surface. It is known that a recording cassette is mounted in or removed from a cassette holder at an ascending position, and a recording cassette in the cassette holder is engaged with a driving spindle at a lowered position. [0004] A holder elevating member having an inclined cam surface for restricting the elevating of the cassette holder (sliding plate disclosed in the publication).
A pair is provided on the right and left sides of the holder, each of which is independently slidably supported on the side wall of the apparatus frame, and the left and right independent holder elevating members are linked to the opening / closing door at the cassette holder entrance. [0005] In other words, with the door opened, the holder is moved up and down by the left and right holder elevating members interlocked with the door,
Further, the opening and closing operation of the door and the left and right holder elevating members supporting the holder are interlocked with each other so that the holder is moved to the drive device lowered when the door is closed. Further, a similar device has been proposed in Japanese Patent Application Laid-Open No. 56-13562. In the apparatus of the above publication, the above-mentioned holder elevating member (guide plate of the above publication) is fixed to the apparatus frame, while the holder for accommodating the recording cassette is linked to the opening / closing door and the inclined guide groove of the holder elevating member. , And moves to a drive position lowered when the door is closed and to a drive position lowered when the door is closed. [0008] In the above-described conventional apparatus, the holder moves up and down between a mounting / detaching position and a driving position in conjunction with an opening / closing door provided at a cassette holder entrance. Since the recording cassette is inserted after the door is opened, the door is closed, and the door is set to the driving state, the operation of setting the recording cassette from the mounting to the driving state is troublesome. At the same time, since the cassette holder is shifted from the attaching / detaching position to the driving position in conjunction with the door, the operator must accurately load the recording cassette into the cassette holder and close the door with care. . That is, if the recording cassette is in an insufficient posture, for example, if the door is closed in a state where the cassette is incompletely mounted, the recording medium and the driving spindle or the recording head abut at an unexpected position to cause a failure. Further, even if the cassette is in the correct posture, if the door is closed vigorously, the recording medium and the drive spindle and the recording head are impacted against each other, and the recording medium is damaged. [0010] The present invention relates to a recording medium in a recording cassette by moving the cassette holder from a mounting / removing posture to a driving posture for engaging with a recording head in conjunction with an operation of inserting the recording cassette into the cassette holder. Is set based on the knowledge that the recording cassette is set to the driving position, and the recording cassette can be easily and quickly set to the driving state, and the recording medium can be accurately set to the driving position. Its main purpose is to provide a recording disk drive device. Further, the present invention relates to a series of operations from the mounting of a recording cassette incorporating a recording medium to the driving state in which the recording medium is engaged with a recording head, in relation to the operation of inserting the recording cassette into a cassette holder. It is intended to be performed continuously and reliably. According to the present invention, there is provided a cassette holder supported in a detachable posture by a holder elevating member, the cassette holder being supported so as to be vertically movable between an attaching and detaching posture and a driving posture. The recording medium is engaged with the recording head and the driving member by moving the cassette holder from the mounting / removing position to the driving position by moving the holder elevating member in conjunction with the insertion operation of the recording cassette into the recording head. Thus, the recording cassette can be easily and quickly mounted on the cassette holder, and the recording cassette can be surely set to the driving state. [0013] Configuration of the reason is a equipped with apparatus based an the recording head and the drive member and the cassette positioning member, a disc pressing member capable of contacting and separating the recording medium, a removable capable of accommodating cassette bay recording cassette Recording cassette
The cassette holder which has a leading end stopper and which can be moved up and down in the vertical direction orthogonal to the insertion direction between the driving posture and the mounting / removing posture, and engages and supports the opposite sides of the cassette accommodating portion to drive the cassette holder A pair of holder elevating members for moving from the posture to the detachable posture and holding the holder in the detachable posture,
A charge spring for urging the holder elevating member toward the driving position, an eject operation member for moving the holder elevating member from the driving position to the attaching / detaching position against the charging spring, and locking the holder elevating member at the attaching / detaching position A locking lock member that is locked and released by a recording cassette mounted at a predetermined position, and a shutter opening / closing member that opens a shutter plate of the recording cassette, respectively, are provided at positions where the shirt plate is opened by the recording cassette insertion operation. The shutter opening / closing member is arranged in the recording cassette insertion direction in this order at a position where the locking / locking member is released at a position where the shutter opening / closing member is engaged with the recording cassette mounted at a predetermined position to release the locking of the holder elevating member. Move the cassette holder from the attachment / detach position to the drive position to determine the position of the recording cassette. A position hole and engage with positioning the cassette positioning member, allowed to interlock the disc pressing member engaged with the cassette holder so away by a removable position in contact with the recording medium at the driving position of the cassette holder. Thus, a series of operations from the mounting of the recording cassette to the setting to the driving position can be continuously and reliably performed. An embodiment of the present invention will be described in detail with reference to an embodiment shown in the drawings. First, the recording medium driven by the drive device of the present invention will be described. The recording cassette A shown in FIGS. 10 to 12 is composed of a recording medium (recording disk 11 shown) such as a floppy disk based on a polyester film. A casing 12 made of plastic for accommodating the recording disk 11;
The head scanning hole 15 formed in the
And a shutter plate 122 for opening and closing the shutter 5. A hub 13 is provided at the center of the recording disk 11, and an index hole 121 is provided around the hub 13.
Is provided. The hub 13 has a center hole 13a as shown in FIG.
, An annular groove 13b, and a collision wall 13c. The casing 12 has the same center hole 14 as the hub 13, a head scanning hole 15, left and right positioning holes 16 formed at the tip of the cassette holder 3 in the direction of insertion into the cassette holder 3, and an index hole 121. An index window 17, a side display hole 18, a write protect hole 19, and guide grooves 124 on both left and right sides are provided on the circumference. The shutter plate 122 keeps the head scanning hole 15 closed when not in use. The shutter plate 122 is connected to the interlocking piece 123 provided in the guide groove 124, and is always closed in the closing direction (the state shown in FIG. 11) by the biasing spring 125. Being energized. Therefore, when the shutter plate 122 moves the opening / closing operation piece 123 from the state of FIG. 11 to the state of FIG. 12 against the urging spring 125, the head operation hole 15 is opened, and the recording disk 11 in the casing 12 is opened. Can be accessed from outside. On the other hand, the recording disk drive B has an apparatus base 2 composed of a frame of the apparatus as shown in FIGS. 1 to 4, a cassette holder 3 for accommodating the recording cassette A, and a cassette holder 3. A holder elevating member 4 to be described later, which is composed of an elevating slide cam;
, A recording head (the illustrated magnetic head 6), and a disk pressing member (the illustrated head pressing pad 66). The device base 2 and the cassette holder 3
A cassette accommodating space for accommodating the recording cassette A is configured. The apparatus base 2 has an opening / closing door 21 for opening and closing the entrance of the cassette accommodating space, a driving member (spindle 24 shown), and an index hole 12 for the recording disk 11.
A light receiving portion 27 of the index sensor for detecting the position 1, a cassette positioning member (positioning pin 28 in the figure), and a locking member (lock lever 45 in the figure) for locking the holder elevating member 4 are provided. The opening / closing door 21 is rotatably supported by a shaft 22 and is urged by a coil spring 23 in a closing direction. The spindle 24 has a projection 24a provided at the center as shown in FIG. 1, a flange 24b provided at the periphery of the projection 24a, and a transmission pin 24c embedded in the flange 24b. As described above, and one end is connected to a pulley 26
Is connected to the drive motor M of FIG. The projection 24a fits into a center hole 13a formed in the hub 13 of the recording cassette A, and the flange 24b supports the hub 13. The transmission pin 24c engages with the annular groove 13b of the hub 13, abuts against the impact wall 13c in the annular groove 13b, and rotates the hub 13. The light receiving section 27 of the index sensor is constructed by embedding a light receiving element such as a photodiode in a holder 27a made of synthetic resin. The positioning pin 28 projects from the apparatus base 2 at a position where the positioning pin 28 fits into the positioning hole 16 of the recording cassette A. The positioning pin 28 and the spindle 24
Of the index sensor and the holder 27 of the index sensor
“a” is adjusted to a height at which the recording cassettes A are respectively supported. The lock lever 45 is disposed on the device base 2 and has a tip claw 45a provided at one end thereof so as to lock the engagement protrusion 46 of the holder elevating member 4 in the state shown in FIG.
The other end 45b of the lock lever 45 is engaged with the leading end of the recording cassette A inserted into the cassette holder 3, the lock lever 45 is rotated clockwise in FIG. Is to be released. The lock lever 45 is provided with a return spring 47.
Is urged in the counterclockwise direction in FIG. As shown in FIG. 2, the cassette holder 3 has a top plate (top plate 31 shown in the figure) and a cassette accommodating portion composed of cassette guides 32 attached to the left and right sides of the top plate 31. The top plate 31 is made of metal or other magnetic material, and shields the recording cassette A housed in the state shown in FIG. 4 from external magnetism. As shown in FIG. 2, when the recording cassette A is inserted into the cassette entrance end,
Guide piece 31a for guiding the recording cassette A to the cassette guide 32, a light emitting portion 33 of the index sensor, a light emitting portion 34 of the side detection sensor for detecting the front and back of the recording cassette A, and a light emitting portion 35 of the write protect sensor. . The cassette guide 32 is a recording cassette A
Have a U-shaped cross section facing left and right so that both sides of the top plate 31 are fitted together, and are attached to the left and right sides of the top plate 31 with screws 36. The left and right cassette guides 32 have a cam engaging portion formed by a pair of left and right pins 37 and a pressing spring 3.
9, a stopper for restricting the leading end of the recording cassette A (abutting stopper piece 311 shown in the figure), and a shutter opening / closing member (an opening / closing claw 312 shown in the figure) that engages with the interlocking piece 123 of the shutter plate 122 of the recording cassette A. ing. In the cassette holder 3 having such a configuration, the pins 37 are fitted into the long grooves 221 formed substantially perpendicularly to the left and right side frames 29a and 29b of the apparatus base 2 so as to be substantially perpendicular to the apparatus base 2. It is supported to be able to move up and down in the direction. still,
The cassette holder 3 is urged by a spring 38 in one of the upper and lower directions, and in the illustrated case, in the lower driving posture side. The cassette holder 3 is supported by a holder elevating member 4 so as to be able to move up and down in a vertical direction orthogonal to the direction in which the recording cassette A is inserted. The holder raising / lowering member 4 has a guide groove 41 in the direction of insertion of the recording cassette A, engages with a pin 42 protruding from the apparatus base 2, and moves between a driving position (the state of FIG. 7) and a mounting / dismounting position (FIG. ) Is supported so as to be reciprocable. As shown in FIG. 3, the holder elevating member 4 is integrally provided with an eject operation member (eject button 43 shown) which can be operated from the outside, and the operation direction of the eject button 43 (the direction of pushing the arrow in FIG. 3). ) Is urged by the charge spring 44 in the opposite direction (drive position side). The holder lifting member 4 has a lock lever 4
An engagement protrusion 46 with which the front end claw 45a of the cassette 5 engages and a cam surface 48 with which the pin 37 of the cassette holder 3 engages are provided. The cam surface 48 includes a driving position cam surface 48a for supporting the front, rear, left and right pins 37 of the cassette holder 3 in the driving posture shown in FIG. 7 and a mounting / dismounting position for supporting the pin 37 in the mounting / removing posture shown in FIG. A cam surface 48b and an inclined cam surface 48c for connecting the two cam surfaces are provided. The cassette holder 3 is not tilted horizontally, that is, in the front-rear direction by the movement of the holder elevating member 4, as shown in FIGS. , So as to raise and lower. That is, the cassette holder 3 is vertically moved in the horizontal state between the driving position and the mounting / removing position by reciprocating the holder raising / lowering member 4 between the driving position (FIG. 7) and the mounting / removing position (FIG. 5). It has become. The holder lifting member 4 is moved from the driving position to the attaching / detaching position by the eject button 4.
3 and moves from the attachment / detachment position to the drive position by the accumulation of the charge spring 44. As shown in FIG. 8, the hub retainer 5 is
And a pressing piece 52 made of a slippery resin, which is in sliding contact with the hub 13 attached to the tip of the leaf spring 51 via a shaft 53. The support shaft 53 of the pressing piece 52 supports the pressing piece 52 via an adjuster spring 54 so as to be swingable in a swinging state. The hub holder 5 is pushed up by the top plate 31 of the cassette holder 3 when the cassette holder 3 is in the mounting / removing posture at the raised position as shown in FIG. 9, and the cassette holder 3 is driven at the lowered position as shown in FIG. When in the posture, the elasticity of the leaf spring 51 causes the pressing piece 52 to press the hub 13 and securely engage the spindle 24. The magnetic head 6 is mounted on a carriage 61 slidably supported in the direction of the center of rotation of the recording disk 11. The carriage 61 is driven and controlled by a pulley 63 of a pulse motor 62 and a steel belt 64 wound around the pulley 63. That is, one end of the steel belt 64 is screwed to the carriage 61, the central portion thereof is wound and fixed on the pulley 63, and the other end is fixed to the carriage 61 via the adjuster spring 65. Therefore, when the pulley 63 rotates clockwise in FIG. 4, the carriage 61 moves toward the center of the recording disk 11, and when the pulley 63 rotates counterclockwise, it moves outward, so that the tracks on the recording disk 11 Detect and pulse motor 6
If the rotation of the magnetic disk 2 is controlled, the magnetic head 6 tracks the track on the recording disk 11. A head holding pad 66 is provided to be supported by a head holding lever 67 so as to face the magnetic head 6. The head holding lever 67 is rotatably supported on the carriage 61 in the direction indicated by the arrow in FIG. 4 and is urged by a spring in a direction in which the head 61 is pressed against the magnetic head 6 although not shown. The head holding lever 67 has a protrusion 6
8 is provided, and when the cassette holder 3 is in the mounting / removing posture at the raised position, the top plate 31 of the cassette holder 3 shown in FIG.
At the position 1b, the projection 68 is pushed up and separated from the magnetic head 6, and when the cassette holder 3 is in the lowered drive posture, it is released from the position 31b shown in the top plate 31 and the magnetic head 6
4 and presses the recording disk 11 against the magnetic head 6 as shown in FIG. The operation of the illustrated embodiment will be described below with reference to the operation state diagrams of FIGS. When the eject button 43 is pushed in as shown in FIG. 5, the holder elevating member 4 integral with the eject button 43 pushes the pin 37 into the detachable position where the cam surface 48b raises the cassette holder 3 and the long groove 221. It is pushed up along and supported. In this state, the charge spring 44 accumulates energy and the locking projection 46 is moved to the tip claw 4 of the lock lever 45.
The holder elevating member 4 is locked at 5a, and is held at this attachment / detachment position. When the recording cassette A is inserted into the cassette holder 3 in this attachment / detachment posture, the recording cassette A is guided by the opening / closing door 21 and the entrance guide piece 31a, and
Invade inside 2. At this time, the opening / closing claw 31 of the cassette guide 32
2 engages with the interlocking piece 123 of the shutter plate 122, and moves the shutter plate 122 as shown in FIG.
Then, the head scanning hole 15 is opened by rotating from the state of FIG. 12 to the state of FIG. 12, and the recording disk 11 can be externally scanned.
(Shutter opening operation) At the same time, the index window 17 is also opened, and the index hole 121 indicating the initial position of the recording disk 11 can be detected from the outside. When the eject button 43 is depressed as shown in FIG. 5, the hub press 5 and the head press lever 67 abut on the top plate 31 of the cassette holder 3 and are pushed up. And the head holding pad 66 is separated from the magnetic head 6. Therefore, when the recording cassette A is inserted, it does not collide with the pressing piece 52 of the hub holder 5 and the head holding pad 66. Next, when the recording cassette A is inserted to a predetermined position as shown in FIG.
5 and the lock lever 45
Is rotated clockwise in FIG. Then, the tip claw 45a of the lock lever 45 is disengaged from the engaging projection 46 of the holder elevating member 4, and the holder elevating member 4 moves in the direction of the arrow in FIG. By the movement of the holder lifting member 4,
The pin 37 of the cassette holder 3 is lowered by the spring 38 in the long groove 221 along the cam surface 48c, and as shown in FIG.
Are supported by the cam surface 48a. (Cassette holder lowering operation) At this time, the cassette holder 3 is lowered vertically from directly above the spindle 24 and the positioning pins 28 on the device base 2,
The center hole 13a of the hub 13 is the protrusion 24a of the spindle 24.
In addition, the positioning hole 16 of the recording cassette A is
8 is securely fitted and positioned in a normal posture. (Cassette Positioning Operation) As the cassette holder 3 descends, the pressing piece 52 of the hub press 5 presses the hub 13, and the head press pad 66 of the head press lever 67 presses the magnetic head 6 via the recording disk 11. (Head pressing operation of recording medium) Recording and reproduction by the magnetic head 6 are performed. When ejecting the recording cassette A from the drive B, the eject button 43 is pushed from the state shown in FIG. 7 to the state shown in FIG. 5, and the pins 37 of the cassette holder 3 are moved along the cam surface 48c of the holder elevating member 4. The cassette holder 3 is raised vertically and the charge spring 4
4 and the engagement protrusion 46 of the holder elevating member 4
Is locked and locked by the tip claw 45a of the lock lever 45. As the cassette holder 3 is raised, the recording cassette A is separated from the spindle 24 and the positioning pins 28. At this time, the top plate 31 of the cassette holder 3 engages with the hub retainer 5, and the pressing piece 52 of the hub retainer 5 retreats from the fitting portion of the recording cassette A as shown in FIG. In the initial stage of the rise of the cassette holder 3, the recording cassette A is resiliently pressed by the pressing spring 39 and maintains its position. However, when the cassette holder 3 is completely raised, the resilient pressure is weakened and the recording cassette A The spring spring 125 jumps out of the opening / closing door 21 by the accumulated power of the urging spring 125. At that time, the shutter plate 122 closes the head scanning hole 15 in the state of FIG. According to the illustrated embodiment, when the recording cassette A is inserted to a predetermined position of the cassette guide 32, the tip claw 45a of the lock lever 45 is disengaged from the engaging projection 46 of the holder elevating member 4, and the holder elevates. The member 4 is moved by the charge spring 44 from the state shown in FIG.
b, the four pins 37 of the cassette holder 3
Moves down along the cam surface 48c in the long groove 221 by the accumulated force of the spring 38, so that the recording disk 11 can be mounted only by performing the mounting operation of the recording cassette A without opening / closing the opening / closing door 21.
Can be set to the driving state, and the mounting operation of the recording cassette A is easy. Since the four pins 37 descend in the vertically provided long groove 221, the cassette holder 3 and the positioning pins 28 are kept in a horizontal posture.
To the center hole 13a of the hub 13
The positioning hole 16 of the recording cassette A can be securely fitted to the projection 24a of the spindle 24 with the positioning pin 28 in a normal posture and positioned. On the other hand, when the eject button 43 is pushed in, the cassette holder 3 rises vertically along the cam surface 48c of the holder elevating member 4, so that the recording cassette A can be securely detached from the spindle 24 and the positioning pins 28. it can. As described above, the center hole 13a and the positioning hole 16 of the pub 13 can be engaged with the projection 24a and the positioning pin 28 of the spindle 24 when the recording cassette A is in a horizontal state. Less damage. The present invention has the following effects. (1) The mounting operation of the recording cassette can be performed easily and quickly. According to the present invention, when the cassette holder is moved from the attachment / detachment posture to the driving posture, the holder elevating member locked and locked at the attachment / detachment position while being charged is unlocked and released by the recording cassette inserted into the cassette holder. After that, since the holder elevating member moves by the accumulation force of the charge spring and shifts the cassette holder to the driving posture, the recording cassette can be set to the driving state by the operation of attaching the cassette to the cassette holder, and the recording cassette can be easily and quickly attached. be able to. (2) The recording medium can be reliably set at the driving position. After the recording cassette is mounted at the predetermined position of the cassette holder, the cassette holder is moved to the driving posture, so that the positioning holes can be accurately engaged with the cassette positioning member on the apparatus base, and the recording cassette can be moved. The recording medium can be reliably set without moving to the driving posture in an incomplete state. (3) A series of operations from the mounting of the recording cassette to the driving state can be continuously performed. That is, in the process of inserting the recording cassette into the cassette holder, the shutter plate of the head scanning hole is opened,
After the recording cassette is inserted in a predetermined mounted state, the cassette holder is shifted from the detachable posture to the driving posture. Next, the cassette positioning member of the apparatus base is engaged with the positioning hole of the recording cassette to set the recording cassette in the driving state, and at the same time, the disc pressing member moves the recording medium to the recording head through the head scanning hole in the open state. And recording and reproduction on a recording medium are enabled. Therefore, the series of operations of opening the shutter plate, shifting the cassette holder to the driving position, positioning the recording cassette, and pressing the recording medium by the disk pressing member are continuously performed by the operation of inserting the recording cassette into the cassette holder. It can be carried out.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a drive device according to an embodiment of the present invention, excluding a cassette holder. FIG. 2 is a perspective view of a cassette holder constituting the drive device. FIG. 3 is a plan view of a main part of the drive device. FIG. 4 is a cross-sectional view of the drive device in a driving state. FIG. 5 is a diagram illustrating a state in which a recording cassette is mounted on a cassette holder in a detachable posture. FIG. 6 is a diagram illustrating a state in which a recording cassette is mounted at a predetermined position on a cassette holder in a detachable posture. FIG. 7 is an explanatory diagram of a state of the cassette holder in a driving posture. FIG. 8 is an explanatory diagram of an operation of a main part of the drive device. FIG. 9 is an explanatory diagram of an operation of a main part of the drive device. FIG. 10 is a perspective external view of a recording cassette. FIG. 11 is an explanatory view of the internal structure of the cassette and the opening / closing operation of the shirt board. FIG. 12 is an explanatory diagram of the internal structure of the cassette and the opening / closing operation of the shirt star plate. [Description of Signs] A: Recording cassette B: Recording disk drive device M: Driving motor 2: Device base 3: Cassette holder 4: Slide cam (holder elevating member) 6: Magnetic head (recording head) 11 Recording disk (recording medium) 12 Casing 15 of recording cassette Head scanning hole 16 of recording cassette 16 Positioning hole 122 of recording cassette Recording Cassette shutter plate 24 Spindle (drive member) 28 Positioning pin (cassette positioning member) 31 Top plate (top plate portion) 32 Cassette guide (cassette accommodating portion) 37 Pin (cam engaging portion) 43 Eject button (eject operation member) 44 Charge spring 45 Lock lever (locking lock) Material) 48 ......... cam surface 66 ......... head pressing pad (disk pressing member) 311 ......... abutment stopper (end restricting stopper) 312 ......... closing pawl (shutter opening and closing member)

Claims (1)

(57) [Claims] A cassette holder accommodating a recording cassette containing a recording medium in a casing; and a holder elevating member for moving the cassette holder from a detachable posture to a driving posture with the recording cassette mounted at a predetermined position, the recording medium comprising: A recording disk drive device for recording and reproducing data with a recording head, comprising: (a) the recording head, a driving member for rotating the recording medium, and a cassette positioning member for engaging a positioning hole formed in the casing. (B) a disk pressing member swingably mounted on the device base capable of coming into contact with and separating from the recording medium at a position facing the recording head; and (c) mounting the recording cassette on the device base. The cassette accommodating section that can be attached and detached in the insertion direction parallel to
A cassette holder having an end regulating stopper, and supported in a vertically movable direction perpendicular to the insertion direction between a driving position in which the recording medium is engaged with the recording head and a detached mounting position in which the recording medium is retracted; ) The cassette holder is mounted on the device base so as to be reciprocally movable between a drive position and a detachable position, and engages and supports opposite side portions of the cassette accommodating portion, thereby moving the cassette holder from the drive position to the detached position and attaching and detaching positions. (E) a charge spring that constantly biases the holder elevating member toward the drive position; and (f) a holder elevating member that is moved from the drive position to the detached position against the charge spring. An ejecting operation member for moving the cassette holder from the driving posture to the mounting / removing posture while accumulating energy in the charge spring; A locking lock member that locks and locks the lifting / lowering member against the accumulated force of the charge spring at the attachment / detachment position, and that is released by the recording cassette when the recording cassette is inserted into a predetermined position of the cassette holder; (H) a shutter opening / closing member provided in the head scanning hole of the casing and for opening a shutter plate constantly urged in a closing direction, wherein the shutter is opened and closed at a position where the shutter plate is opened by the insertion operation of the recording cassette. The locking lock members are respectively arranged in this order in the insertion direction of the recording cassette at positions where the members are engaged with the recording cassette mounted at a predetermined position to release the locking of the holder elevating member, and Positioning the cassette at the position where it engages with the positioning hole of the recording cassette by moving from the detachment position to the drive position A recording disk drive device, wherein a member is arranged and the disk pressing member is engaged with and interlocked with a cassette holder so as to come into contact with a recording medium in a driving posture of the cassette holder and to separate in a mounting / removing posture. 2. The eject operation member is connected to the holder elevating member.
2. The recording disk drive according to claim 1 , wherein the recording disk drive is provided on a body . 3. The cassette holder was formed by forming a cassette fitting guide having a U-shaped cross section on both sides of the flat plate-shaped member, and the disk pressing member was supported on the upper wall of the flat plate-shaped member. The recording disk drive device according to claim 1 .