JPH11144407A - Recording and reproducing device for storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize reduction in the number of components and improve the work efficiency of an assembly step. SOLUTION: A holding member 61 is tightened to a frame 14 by three mounting bolts 62 to 64. The holding member 61 is made of a tabular metal plate, and has a guide shaft holding part 65 for holding a guide shaft 24, a lever member supporting part 66 for turnably supporting a stopper connection lever 46, a spring supporting part 67 for supporting a torsion spring 47, a solenoid holding part 68 for holding a solenoid 48, and a position adjustment part 69 for a lifter 25. Therefore, since the holding member 61 is fixed to the frame 14, the guide shaft 24, the stopper connection lever 46, the torsion spring 47, the solenoid 48 and the position adjustment part 67 are simultaneously held. Thus, five kinds of mounting parts can be simultaneously mounted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus for a recording medium, and more particularly to a recording / reproducing apparatus for a recording medium having a head moving mechanism for moving a head closer to the recording medium in conjunction with the transport of the recording medium by a recording medium transport mechanism. About.

[0002]

2. Description of the Related Art For example, an electronic device such as a personal computer or a word processor is equipped with a magnetic disk device as a means for recording information. When a disk cartridge as a recording medium is mounted in the magnetic disk device, the magnetic disk accommodated in the disk cartridge is driven to rotate, and the magnetic head slides on the magnetic disk to perform magnetic recording and reproduction.

In the above-described magnetic disk drive, a disk holder into which a disk cartridge is inserted and a disk holder are slid by the operation of inserting the disk cartridge to move the disk holder from a cartridge insertion / ejection position to a cartridge mounting position. It has a configuration having a recording medium transport mechanism composed of a slider. The slider is urged in one direction by a coil spring or the like,
When the disc cartridge is inserted, the latch lever is pressed against the end of the disc cartridge and pivots, and the latch by the latch lever is released. As a result, the slider slides in the biasing direction to move the disk holder to the cartridge mounting position. At this time, the disk holder is lowered from the cartridge insertion / ejection position to the cartridge mounting position, thereby chucking the disk in the disk cartridge on the turntable.

[0004] In order to reliably perform such a mounting operation of the disk holder, a spring force for urging the slider is set strong. However, the slider is accelerated by a strong spring force from the initial stage of cartridge insertion to the mounting of the cartridge, and has a substantially constant speed.By the time the slider reaches the sliding completion position, the magnetic head contacts the magnetic disk when the required force is reached. The impact upon contact may be too strong, damaging the magnetic film on the surface of the magnetic disk.

[0005] Therefore, a conventional device is provided with a damper for decelerating the sliding operation of the slider. As this type of damper, there is an oil damper including a gear that meshes with a rack provided on a slider, a rotating body that rotates with the gear, and a container in which grease is filled and the rotating body is stored. When the rotating body provided in the container is rotated by the sliding operation of the slider, the oil damper generates a damping force due to the viscous resistance of the grease filled in the container, and as a result, reduces the sliding operation of the slider. You can do it.

[0006]

However, in the above-described conventional magnetic disk drive, the viscosity of the oil filled in the oil damper depends on the temperature. The mounting cannot be performed reliably, and the viscosity resistance of the oil becomes low at high temperatures, so that the mounting operation becomes stronger and the magnetic film of the magnetic disk may be damaged.

In the magnetic disk drive, the storage capacity of the magnetic disk is increased by increasing the disk rotation speed to increase the storage capacity, and the storage capacity of the magnetic disk is being increased. In a large-capacity magnetic disk device of this type, a levitation force is applied to the magnetic head by an air flow generated as the magnetic disk rotates at a high speed, so that the magnetic head is magnetically lifted slightly above the surface of the magnetic disk. Recording and reproduction can be performed.

Therefore, when the magnetic disk is rotated at a higher speed as the storage capacity is increased, the operating speed of the magnetic head is increased when the magnetic head is brought closer to the magnetic disk in conjunction with the mounting operation of the disk cartridge. Therefore, there is a high possibility that the magnetic film formed on the surface of the magnetic disk rotating at a high speed is damaged. Therefore, in this type of magnetic disk device, the magnetic head is configured to operate in a stepwise manner in the operation process from the insertion position where the recording medium is inserted to the mounting position where the recording medium can be recorded and reproduced by the head. It is considered that the magnetic film of the magnetic disk is not damaged. In such a head moving mechanism that performs the operation of the magnetic head in a stepwise manner, a head carriage that rotatably supports a head arm having a magnetic head, a guide shaft that slidably guides the head carriage, A stopper member for locking the head carriage, a lever member for displacing the stopper member to a locking position or an unlocking position, a solenoid for driving the lever member, a spring member for rotationally biasing the lever member, and a recording medium A head arm driving member for rotating the head arm in conjunction with the mounting operation or the ejecting operation of the head, and a leaf spring member for pressing the guide shaft to hold it.

However, in the magnetic disk drive having the above-described head moving mechanism, since mounting members for mounting each member are individually required, the number of parts increases and the number of working steps in the assembly process increases. There is a possibility that production efficiency will decrease due to the increase. Therefore, an object of the present invention is to provide a recording medium recording / reproducing apparatus which solves the above problem.

[0010]

In order to solve the above problems, the present invention has the following features. Claim 1
The described invention has a head for writing information on a recording medium or reading information recorded on the recording medium, a head arm having the head rotatably supported, and slidably attached to a frame. A head carriage, a guide shaft that slidably guides the head carriage, a locking member that locks the head carriage upon ejection, and a lever member that displaces the stopper member to a locking position or an unlocking position. And a recording medium recording / reproducing apparatus having a solenoid for driving the lever member,
A holding member is provided which has a guide shaft holding portion for holding the guide shaft and a solenoid holding portion for holding the solenoid, and is formed to hold the guide shaft and the solenoid simultaneously by being fixed to the frame. It is characterized by having.

According to the first aspect of the present invention, since the same holding member is provided with the guide shaft holding portion for holding the guide shaft and the solenoid holding portion for holding the solenoid, the holding member for holding the guide shaft is provided. It is not necessary to separately attach a holding member for holding the solenoid and the solenoid, so that the number of parts can be reduced by that much, and the work efficiency of the assembling process can be improved to increase the productivity.

According to a second aspect of the present invention, there is provided a head for writing information on a recording medium or reading information recorded on the recording medium, and a head for rotatably supporting a head arm having the head. A carriage, a guide shaft slidably guiding the head carriage,
At the time of ejection, a locking member for locking the head carriage, a lever member for displacing the locking member to a locking position or an unlocking position, a solenoid for driving the lever member, and rotating the lever member The recording medium recording / reproducing apparatus, comprising: a biasing spring member; and a head arm driving member that regulates a rotation position of the head arm in conjunction with a mounting operation or an ejecting operation of the recording medium. , A lever member supporting portion for rotatably supporting the lever member, a spring supporting portion for supporting the spring member, a solenoid fixing portion for fixing the solenoid, and the head arm drive A position adjusting portion of a member, and the guide shaft, the lever member, and the spring member being fixed to the frame. Fine is characterized in that the provided form retention member to hold the solenoid and the position adjusting section simultaneously.

According to the second aspect of the present invention, the holding member for holding the guide shaft has the guide shaft holding portion, the lever member supporting portion, the spring supporting portion, the solenoid fixing portion, and the position adjusting portion. By attaching the member, not only the guide shaft but also the lever member support portion, the spring support portion, the solenoid fixing portion, and the position adjustment portion can be attached. Therefore, five types of mounting locations can be simultaneously mounted by the holding member, and the number of parts can be reduced by that amount, and the production efficiency of the assembly process can be increased.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a recording medium recording / reproducing apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a magnetic disk drive 11 as one embodiment of a recording medium recording / reproducing apparatus according to the present invention. FIG. 2 is an exploded perspective view showing a schematic configuration of the magnetic disk drive 11.

As shown in FIGS. 1 and 2, the magnetic disk drive 11 includes a disk holder 12 into which a disk cartridge (not shown) is inserted, and a slider that slides up and down in the front-rear direction. 13 are mounted on a frame 14. The slider 13 is slidably provided on the frame 14 in the directions A and B, and slides in the direction A by inserting a disk cartridge to lower the holder 12 from the cartridge insertion / ejection position to the cartridge mounting position.

On a flat surface 14a of the frame 14, a turntable 15 driven by a motor for rotating a disk is provided.
Head carriage 18 supporting magnetic heads 16 and 17
Are provided. A circuit board (not shown) having a control circuit is attached to the lower surface of the frame 14. The head carriage 18 has a carriage body 19 that supports the lower magnetic head 16 on the top surface of the tip and a carriage body 19 that supports the upper magnetic head 17 on the bottom surface of the tip.
And a head arm 20 rotatably mounted on the head arm 20.

The head carriage 18 is provided movably guided by guide shafts 21 and 24 extending in the front-rear direction (A and B directions). Bearing portions 18a on which the guide shaft 21 is slidably fitted are provided on the left and right side surfaces of the head carriage 18. The bearing 18a is formed by a circular hole through which the main guide shaft 21 penetrates.
It is the main bearing for regulating the height position in the left-right direction. Further, since the bearing portion 18b is a U-shaped bearing to which the guide shaft 21 is fitted, the bearing portion 18b does not restrict the moving direction and the left-right direction, but restricts only the height position of the head carriage 18.

The head carriage 18 is driven by a voice coil motor 52 to be described later to drive the guide shaft 2.
1 and the guide shaft 24 moves in the A and B directions. Thus, the magnetic heads 16 and 17 supported by the head carriage 18 can perform magnetic recording / reproduction by sliding in contact with desired tracks of a magnetic disk (not shown) stored in a disk cartridge. .

On the lower surface of the slider 13, a damper mechanism 31 is provided. That is, a shaft 34 for rotatably supporting the damper plate 32 of the damper mechanism 31 and a hook 35 for hooking one end of the torsion spring 33 are provided on the lower surface of the slider 13. The damper mechanism 31 is a mechanical damper mechanism that urges the slider 13 so as to reduce the sliding operation of the slider 13 using a spring force instead of an oil damper. That is, the damper mechanism 31 includes a damper plate 32 rotatably provided on the lower surface of the slider 13 and a torsion spring 33 for urging the damper plate 32.

The damper mechanism 31 urges the slider 13 in the direction opposite to the moving direction (B direction) at the initial stage of the movement of the disk holder 12 from the cartridge insertion / ejection position to the cartridge mounting position, and the slider 13 slides. When the damper plate 32 rotates by a predetermined amount or more during the movement, the slider 13 is configured to be urged in the movement direction (A direction). Therefore, at the time of the disk mounting operation, the damper mechanism 31 uses the spring force of the torsion spring 33 to move the slider 1.
The operation of Step 3 is decelerated to reduce the descent speed of the disk holder 12, that is, the disk mounting speed.

Next, the configuration of each main part configured as described above will be individually described. The disk holder 12
It comprises a top plate 12a, and cartridge guide portions 12b and 12c which are bent to hold the disk cartridge from both sides of the top plate 12a. Therefore, a space surrounded by the top plate 12a and the cartridge guide portions 12b and 12c on both sides becomes a cartridge insertion portion.

The top plate 12a of the disk holder 12 is provided with an opening 12d for the movement of the head carriage 18, and a lifter 25 which contacts the protruding portions 20a protruding from both sides of the head arm 20 on the right side of the opening 12d. It is movably mounted. Therefore, the head arm 20
Is provided to intermittently move the magnetic head 17 up and down in conjunction with the up and down operation of the disk holder 12. Therefore, the disk holder 12, the head arm 20,
The lifter 25 and the like constitute a head moving mechanism.

The lifter 25 has a shaft 25b projecting from both ends of the main body 25a.
It is supported by the support portion 12h standing upright at 2a. Therefore, the lifter 25 is attached rotatably in the E and F directions orthogonal to the carriage movement direction (A and B directions). Further, a pair of engaging pins 12e for engaging with the slider 13 is provided on both sides of the disc holder 12, and guide portions 12f, 12
g is protruding. The guide portions 12f and 12g are fitted in guide grooves 14d and 14e provided in the side walls 14b and 14c of the frame 14, and guide the lifting and lowering operation of the disk holder 12.

The top plate 12a of the disk holder 12
The lifter 25 is rotated so that the locking portion 25c comes into contact with the protruding portion 20a of the head arm 20 and lowers the head arm 20 stepwise as the disk holder 12 moves up and down as described later. I do. In addition, the locking portion 25
c is formed to extend from the innermost track position to the outermost track position of the disk, that is, the length corresponding to the stroke of the head carriage 18.

The slider 13 is slidably mounted above the disk holder 12 and has a J-shaped flat plate 13.
a and the side surface 13 bent downward from both sides of the flat plate 13a
b, 13c and inclined grooves 13d provided on the side surfaces 13b, 13c to which the engaging pins 12e of the disc holder 12 fit.
And an engagement hole 13e that engages with a protrusion 14f that projects from the center of both sides of the frame 14. Furthermore, slider 1
3 has a protruding piece 13g protruding to the front right side, and an eject button 40 is fixed to the protruding piece 13g. The slider 13 is urged in the direction A by a coil spring 41.

FIG. 3 is a front view of the disk drive. FIG.
As shown in FIG. 2, a front bezel 27 having a disc insertion slot 26 is attached to the front end of the frame 14. On the right side of the upper end of the front bezel 27, a concave portion 27a into which the eject button 40 is slidably fitted is provided. A flap 28 for closing the disc insertion opening 26 from the inside is provided on the back side of the front bezel 27 so as to be rotatable in the opening and closing direction.

FIG. 4 shows the disk holder 12 and the slider 13.
It is a side view which shows the state which was combined. As shown in FIG. 4, the engagement pin 12e of the disk holder 12 is fitted in the inclined groove 13d of the slider 13, so that
The sliding operation of the slider 13 drives the engaging pin 12e along the inclined groove 13d. Therefore, when the slider 13 slides in the direction B, the disk holder 12 moves up to the cartridge insertion / ejection position, and when the slider 13 slides in the direction A, it moves down to the cartridge mounting position. Therefore, the recording medium transport mechanism is constituted by the disk holder 12 and the slider 13.

Here, description will be made returning to FIG. The latch mechanism 36 includes a latch lever 38 rotatably supported on the upper surface of the disk holder 12 and a coil spring 41 for urging the latch lever 38 to rotate counterclockwise. In addition, the coil spring 41 is connected to the slider 13
And a latch lever return spring that biases the latch lever 38.

The latch lever 38 is used to open and close a shutter (not shown) of the disk cartridge.
8a and an arcuate hook 38b for hooking the hook 13h of the slider 13. When the disk cartridge is inserted into the disk holder 12, the latch lever 38 is pressed by the front end of the disk cartridge and rotates clockwise. Then, when the arc-shaped engaging portion 38b is separated from the engaged portion 13h of the slider 13, the slider 13 urged by the coil spring 41 slides in the direction A.

As the latch lever 38 rotates in this manner, the tip 38c of the lever portion 38a presses the shutter (not shown) of the disk cartridge in the opening direction, and the magnetic heads 16 and 17 slide on the magnetic disk. It can be so. Further, when the eject button 40 is pressed in the direction B and the slider 13 slides in the same direction, the locking of the locking portion 38b which has been in contact with the side surface of the locked portion 13h of the slider 13 is released. The latch lever 38 rotates counterclockwise by the spring force of the coil spring 41.

Numeral 45 denotes a carriage stopper, which locks the head carriage 18 at the time of ejection, as will be described later, so that the magnetic heads 16 and 17 are magnetic disks (not shown).
This is a lock member for preventing sliding contact. The carriage stopper 45 is attached in a direction extending in the A and B directions so that the main body 45a faces the right side of the guide shaft 24, and is provided with a bearing (not shown) formed on the frame 14. ), It is rotatably supported in the E and F directions similarly to the lifter 25 described above. The carriage stopper 45 has a rack 45b for locking the head carriage 18 and a V-shaped recess 45c to which an engaging pin 25d protruding from an end of the lifter 25 is engaged.

The right side of the head carriage 18 has
A movable rack 56 facing the rack 45b is provided. The rack 45b is formed to extend from the innermost track position of the disk to the outermost track position, that is, the length corresponding to the stroke of the head carriage 18. Therefore, the carriage stopper 45
By rotating in the F direction, the rack 45b meshes with the movable rack 56 to lock the head carriage 18.

Reference numeral 46 denotes a stopper connecting lever,
4 is rotatably supported by mounting bolts 62 provided on the upper surface 4. The stopper coupling lever 46 has an arm portion 46a extending in the direction A and a spring locking portion 46b extending laterally substantially perpendicular to the direction A. Arm part 4
An oval engagement hole 46c is provided at the base of 6a to engage with a protruding pin 45d protruding from a rear portion of the upper surface of the main body 45a of the carriage stopper 45.

Spring locking portion 46 of stopper connecting lever 46
One end 47a of the torsion spring 47 is hung on b. The other end 47b of the torsion spring 47 is in contact with the rear inner wall of the frame 14. Therefore, the stopper coupling lever 46 is urged clockwise, that is, in the carriage locking direction, by the spring force of the torsion spring 47.

A solenoid 48 is excited by a command from a control circuit (not shown) to attract the plunger 49 in the direction D. The end of the plunger 49 is connected to the tip of the arm 46a of the stopper connecting lever 46. Therefore, when the solenoid 48 is excited and the plunger 49 is attracted in the direction D, the stopper coupling lever 46 rotates in the counterclockwise direction, that is, in the carriage unlocking direction.

When the solenoid 48 is not excited due to a power failure or the like, the plunger 49 returns in the direction C, and the stopper coupling lever 46 rotates clockwise, that is, in the carriage locking direction. Reference numeral 50 denotes a holding member, which is formed of a sheet metal so that the guide shaft 24, the stopper coupling lever 46, the solenoid 48, and the torsion spring 47 are pressed from above and fixed by being fixed to the frame 14.

A guide shaft pressing member 51 is fixed to the frame 14 in a state where the end of the guide shaft 21 is pressed in the axial direction (A direction). A voice coil motor 52 has a coil 53 integrally provided on the left side surface of the head carriage 18. This voice coil motor 52
Is provided on the left side of the guide shaft 21 arranged near the center of gravity of the head carriage 18.
Therefore, the head carriage 18 can be driven in the A and B directions by one voice coil motor 52 to perform the seek operation of the magnetic heads 16 and 17. Therefore,
The size of the head carriage 18 is smaller than that of a configuration in which a pair of voice coil motors are provided on both sides of the head carriage 18, the moving space of the carriage 18 is smaller, and the magnetic disk device 11 can be reduced in size.

Here, the configuration of the peripheral portion of the head carriage 18 will be described. FIG. 5 is an enlarged plan view showing the periphery of the head carriage 18 in the recording / reproducing mode. As shown in FIG. 5, the head arm 20 is supported on a support table 57 of the head carriage 18 via a leaf spring 58 so as to be rotatable in the vertical direction. Further, the head arm 20 is urged downward by a pressing portion 60a extending in the direction A from a torsion spring 60 hooked in a state of being wound around a shaft 59 provided at the rear portion of the support base 57. .

Therefore, the projecting portion 20 a projecting laterally from the head arm 20 is pressed against the upper surface of the locking portion 25 c of the lifter 25 by the spring force of the torsion spring 60. The lifter 25 includes a V-shaped recess 45 provided at an end of the carriage stopper 45 with an engagement pin 25 d protruding from the end.
As described later, the carriage 45 rotates intermittently in conjunction with the rotation of the stopper 45 for the carriage.

Plunger 4 sucked by solenoid 48
Reference numeral 9 is engaged with the tip end 46d of the arm portion 46a of the stopper connecting lever 46. Also, the stopper connecting lever 4
In 6, the spring locking portion 46 b is urged clockwise by the spring force of the torsion spring 47. Therefore, the carriage stopper 45 in which the protruding pin 45 d is engaged with the engagement hole 46 c of the stopper coupling lever 46 is provided with the torsion spring 47.
Pivots in the carriage locking direction (E direction) due to the spring force of. Thereby, the rack 4 of the carriage stopper 45
5b engages with the movable rack 56 of the head carriage 18 to lock the head carriage 18.

At the rear of the frame 14, an eject detection switch 54 for detecting that the slider 13 has slid in the eject direction is provided. The eject detection switch 54 is provided with a slider 13 that slides in the same direction when the eject button 40 is pressed in the B direction.
And is switched to the closed state. FIG. 6 is a plan view showing a state where the holding member is attached.

As shown in FIG. 6, the holding member 61
It is fastened to the frame 14 by three mounting bolts 62 to 64. The holding member 61 is formed of a plate-shaped metal plate, and has a guide shaft holding portion 65 that holds the guide shaft 24 and a lever member supporting portion that rotatably supports the stopper coupling lever (lever member) 46. 66
And a spring support portion 67 for supporting the torsion spring 47 (spring member), a solenoid holding portion 68 for holding the solenoid 48, and a position adjusting portion 69 for the lifter (head arm driving member) 25.

Therefore, the holding member 61 is fixed to the frame 14, so that the guide shaft 24, the stopper connecting lever 46, the torsion spring 47, the solenoid 4
8. Since the position adjustment unit 67 is held at the same time, five types of attachment parts can be attached at the same time. Therefore, the number of parts can be reduced and the production efficiency of the assembling process can be increased as compared with a configuration in which each unit is individually held.

FIG. 7 is a view for explaining the structure of the holding member 61. As shown in FIG. As shown in FIGS. 7A, 7B, and 7C, the holding member 61 includes a pair of pressing portions 61b, a left side portion of a flat plate portion 61a formed so as to face the frame 14.
61c. The tip portions of the pressing portions 61b and 61c are inclined at an angle of about 45 ° with respect to the hanging direction,
The outer periphery near both ends of the guide shaft 24 is pressed from a direction of about 45 °. The mounting position of the guide shaft 24 is regulated at one end by the guide shaft pressing member 51,
The other end contacts the stopper 61d of the pressing portion 61c, and the mounting position is regulated.

The guide shaft holding portion 65 is composed of the pair of pressing portions 61b and 61c. The pair of pressing portions 61b and 61c are configured such that the holding member 61 is fixed to the frame 14 and abuts on the outer circumference near both ends of the guide shaft 24, and the guide shaft 24 is elastically deformed.
Steps (not shown) formed on both ends of frame 14
To hold the guide shaft 24 at a predetermined mounting position.

The holding member 61 has a solenoid holding portion 68 formed by bending a flat plate portion 61a so as to correspond to the upper shape of the solenoid 48. The solenoid holding portion 68 has a projection 61 abutting on the side surface of the solenoid 48.
e, and a projection 61f that contacts the rear end of the solenoid 48. FIG. 8 is a plan view for explaining a mounting portion of the solenoid 48.

As shown in FIG. 8, the mounting portion 70 on the frame 14 on which the solenoid 48 is held has protrusions 71 and 72 which are in contact with both sides of the solenoid 48, and which is in contact with the rear end of the solenoid 48. A projection 73 is provided.
Therefore, the solenoid 48 is brought into contact with the upper surface of the solenoid
And the projection 6 of the holding member 61.
The mounting position in the horizontal direction is regulated by the projections 71 to 73 on the frame 14 and 1e, 61f. Therefore, the solenoid 48 is held by the mounting portion 70 on the frame 14 by fixing the holding member 61 to the frame 14.

The flat plate portion 61a of the holding member 61 has
Through-holes 61g-6 through which mounting bolts 62-64 are inserted
1i is provided. The mounting bolts 62 to 64 are inserted into the through holes 61g to 61i, and
To be screwed into a screw portion (not shown). The holding member 61 is in contact with the frame 14 and
It has a leg portion 61k for supporting 1a at a predetermined height.

FIG. 9 is an enlarged plan view showing an attached state of the holding member 61. As shown in FIG. 9, the first mounting bolt 62 functions as a lever member support portion 66 that rotatably supports the stopper coupling lever 46 in a state where the first mounting bolt 62 is inserted into the through hole 61g. Also, the second mounting bolt 6
Reference numeral 3 functions as a spring support portion 67 that supports the coil portion of the torsion spring 47 while being inserted through the through hole 61h.

The flat plate portion 61a of the holding member 61 has
An internal thread portion 61j into which an adjustment bolt 74 for adjusting the height position of the lifter 25 is screwed is provided. Adjustment bolt 7
4 has a lifter 25 as shown in FIG.
Abuts on a contact portion 75 extending from the end of the contact member. Therefore, the lift amount of the lifter 25 can be adjusted by changing the screwing amount of the adjusting bolt 74 into the female screw portion 61j.

As described above, the holding member 61 is a single member, and the guide shaft 24, the stopper coupling lever 46,
Torsion spring 47, solenoid 48, position adjusting section 67
Can be held simultaneously. Therefore, the assembling work can be easily performed, and the working efficiency of the assembling process can be improved. Next, the magnetic disk device 1 configured as described above
No. 1 disk mounting operation will be described.

As shown in FIGS. 1 and 4, when a disk cartridge (not shown) is inserted into the disk holder 12 from the disk insertion opening 26 of the front bezel 27,
The latch lever 38 is pressed to rotate clockwise. The latch portion 38b of the latch lever 38 is
When the coil spring 4 is separated from the hooked portion 13h,
The slider 13 urged by 1 slides in the A direction.

When the latch lever 38 rotates clockwise in this manner, the engagement of the slider 13 is released, and the tip 38c of the lever 38a opens the shutter (not shown) of the disk cartridge. Both sides of the disk holder 12 are supported on the left and right side surfaces of the frame 14 so as to be movable only in the vertical direction. Therefore, when the slider 13 slides in the direction A, the engaging pin 12e of the disk holder 12 is driven along the inclined groove 13d,
The disk holder 12 descends from the cartridge insertion / ejection position to the cartridge mounting position.

FIG. 10 is an enlarged plan view showing the periphery of the head carriage 18 in the eject mode. As shown in FIG. 10, in the ejection mode, the end of the slider 13 extending in the direction B contacts the ejection detection switch 54 to close the ejection detection switch 54. Therefore, the eject detection switch 54
An ejection detection signal is output to a control circuit (not shown). Thus, the solenoid 48 is demagnetized and displaces the plunger 49 in the direction C.

In the eject mode, since the solenoid 48 is not excited, the stopper coupling lever 46
Are rotated clockwise by the spring force Fa of the torsion spring 47. Therefore, the carriage stopper 45 pivots toward the head carriage 18 to engage the rack 45b with the movable rack 56 on the head carriage 18 side.

The spring force Fa of the torsion spring 47 is
Acts as a pressing force Fb for pressing the protruding pin 45d engaging with the engaging hole 46c of the stopper connecting lever 46 in the C direction. Since the head carriage 18 is driven in the directions A and B by the voice coil motor 52, when there is no driving force from the voice coil motor 52 at the time of, for example, a power outage, the head carriage 18 is not restrained at all and moves without permission. It's easy to do. However, in the eject mode, the rack 45b of the carriage stopper 45 is
The head carriage 18 is engaged with the movable rack 56 on the
Is locked, it is possible to prevent the head carriage 18 from moving without permission.

Even if a power failure occurs during another operation mode, the driving force from the voice coil motor 52 is lost and the solenoid 48 is demagnetized in the same manner as described above. The head carriage 18 can be prevented from moving on its own. FIG.
FIG. 3 is an enlarged plan view showing a peripheral portion of the head carriage 18 in a recording / reproducing mode.

As shown in FIG. 11, when the recording / reproducing mode is in a standby state such as a standby state or a sleep state, the seek operation of the head carriage 18 is not performed. In this case, the solenoid 48 is demagnetized. Let it. As a result, similarly to the above-described ejection mode shown in FIG.
7, the carriage stopper 45 pivots toward the head carriage 18 because it is rotated clockwise by the spring force Fa. Therefore, the rack 45 of the carriage stopper 45
b meshes with the movable rack 56 on the carriage 18 side.

Thus, when the recording / reproducing mode is in the standby state, the head carriage 18 is locked in a state in which the head carriage 18 cannot move in the A and B directions. Next, the operation of the head arm 20 in conjunction with the operations of the carriage stopper 45, the stopper coupling lever 46, the torsion spring 47, and the solenoid 48 will be described.

FIG. 12 is an enlarged plan view showing the periphery of the head carriage 18 when a seek operation is performed in the recording / reproducing mode. As shown in FIG. 12, when the disk cartridge inserted into the disk holder 12 moves to the recording / reproducing position, a disk sensor (not shown) is turned on and a disk motor (not shown) for driving the turntable 15 is provided. After the number of revolutions of the motor reaches a predetermined high speed, the solenoid 48 is excited.

Therefore, in the recording / reproducing mode, the solenoid 4
8 is excited to suck the plunger 49 in the D direction. As a result, the stopper coupling lever 46 connected to the plunger 49 rotates counterclockwise to separate the rack 45b of the carriage stopper 45 from the movable rack 45c of the head carriage 18. As a result, the lock on the head carriage 18 by the carriage stopper 45 is released.

Therefore, the head carriage 18 performs a seek operation in the disk radial direction (A and B directions) by the driving force of the voice coil motor 52, and
7 can face a desired track. Plunger 4 attracted in direction D by excitation of solenoid 48
9 is engaged with the tip end 46d of the arm portion 46a of the stopper connecting lever 46, the suction force Fd of the solenoid 48 is enlarged by the leverage principle, and the engaging force Fd is provided in the middle of the arm portion 46a in the longitudinal direction. The force Fe for pressing the protruding pin 45d and the torsion spring 47 engaging with the hole 46c,
Ff. The suction force Fd of the solenoid 48 is determined by the V-shaped concave portion 45 c of the carriage stopper 45.
5 acts as a pressing force Fg for pressing the engaging pin 25d in the D direction.

Therefore, even if the suction force Fd of the solenoid 48 is small, it is enlarged by the stopper coupling lever 46 and transmitted to the carriage stopper 45 and the lifter 25, so that a sufficient driving force can be obtained even if the solenoid 48 is small. . Accordingly, the power consumption of the solenoid 48 can be reduced, and the installation space for the solenoid 48 can be reduced to cope with the downsizing of the device.

FIG. 13 is a front view for explaining the operation of the carriage stopper 45 with respect to the head carriage 18. FIG. 13A shows an operation state in the ejection mode, in which the stopper coupling lever 46 is pressed in the C direction by the spring force of the torsion spring 47.
Therefore, the carriage stopper 45 rotates in the E direction by the spring force of the torsion spring 47, and
Are engaged with the movable rack 56 on the head carriage 18 side. Therefore, the head carriage 18 is locked by the carriage stopper 45.

FIG. 13B shows an operation state in the standby mode. In the standby mode, the stopper coupling lever 46 is pressed in the C direction by the spring force of the torsion spring 47 as in the eject mode. Therefore, the carriage stopper 45 rotates in the direction E by the spring force of the torsion spring 47, and the rack 45b meshes with the movable rack 56 on the head carriage 18 side to lock the head carriage 18.

FIG. 13C shows an operation state in the recording / reproducing mode. In the recording / reproducing mode, as described above, the solenoid 48 is excited, and the stopper coupling lever 46 is driven in the D direction. Therefore, the carriage stopper 45 is rotated in the F direction by the driving force of the solenoid 48, and the rack 45b is separated from the movable rack 56 on the head carriage 18 side to release the lock of the head carriage 18. Thereby, the head carriage 18
Can perform a seek operation in the A and B directions.

FIG. 14 is a front view for explaining the operation of the carriage stopper 45 and the lifter 25 with respect to the head arm 20. FIG. 14A shows an operation state in the ejection mode. The carriage stopper 45 is rotated in the E direction by the spring force of the torsion spring 47, and the rack 45b is moved toward the head carriage 18 side. It engages with the rack 56. Since the disk holder 12 has been raised to the disk ejection / insertion position, the lifter 25 has also been raised.

An adjusting bolt 74 for adjusting the height of the lifter 25 is screwed into the holding member 61. The lower end of the adjustment bolt 74 contacts an abutting portion 75 extending from the end of the lifter 25. Therefore, the adjustment bolt 74
The lift amount of the lifter 25 can be adjusted by changing the amount of screwing into the holding member 61.

In the process of raising the disk holder 12 to the disk ejection / insertion position, the lifter 25
The abutting part 75 provided integrally with the abutment contacts the lower end of the adjustment bolt 74. The lifter 25 is supported on the upper surface of the disk holder 12 so as to swing in the E and F directions about the shaft 25b. Therefore, the abutting portion 75 extending rightward of the lifter 25 with the upward movement of the disk holder 12 abuts on the lower end portion of the adjustment bolt 74, whereby the lifter 2 is lifted.
5 rotates in the F direction.

A protrusion 20 a projecting laterally from the head arm 20 is locked to a lock 25 c provided on the left side of the lifter 25. Therefore, the lifter 25 rotates in the F direction together with the upward movement of the disk holder 12 to lift the protrusion 20a of the head arm 20 upward. As a result, the head arm 20 is connected to the upper magnetic head 17.
Is held at the upward movement position separated from the lower magnetic head 16.

At this time, the engagement pin 25 of the lifter 25 is
d is separated from the V-shaped concave portion 45c of the carriage stopper 45. FIG. 14B shows an operation state in the standby mode. In the standby mode, the head arm 20 temporarily stops at an intermediate position between the disk eject / insert position and the disk mounting position. That is, the engaging pin 25 d protruding in the direction B from the end of the lifter 25 enters the V-shaped concave portion 45 c of the carriage stopper 45 with the lowering operation of the disk holder 12. Then, the engagement pin 25d of the lifter 25 is inserted into the V-shaped concave portion 45c of the carriage stopper 45 and contacts the inclined portion of the V-shaped concave portion 45c.

Thus, the lifter 25 is stopped at an intermediate position from the disk eject / insert position to the disk mounting position. Therefore, the turning operation of the head arm 20 linked to the lifter 25 is temporarily stopped. In the standby mode, since the head arm 20 is stopped at an intermediate position before the head arm 20 descends to the disk mounting position, the magnetic head 17 supported by the distal end of the head arm 20 is supported by the distal end of the carriage body 19. Magnetic head 16
And a predetermined distance S therebetween. Therefore, the upper magnetic head 17 is located above a magnetic disk (not shown).

The lower magnetic head 16 is not in contact with the magnetic disk until the disk holder 12 is lowered to the disk mounting position. However, when the head arm 20 rotates downward with the lowering operation of the disk holder 12, The magnetic disk pressed by the upper magnetic head 17 abuts momentarily. FIG. 14C shows an operation state in the recording / reproducing mode. In the recording / reproducing mode, as described above, the solenoid 48 is excited and the stopper coupling lever 46 is driven in the D direction, so that the carriage stopper 45 is rotated in the F direction by the driving force of the solenoid 48, The rack 45b is separated from the movable rack 56 on the head carriage 18 side. As a result, the head carriage 18
Is unlocked.

The carriage stopper 45 rotates in the F direction, and the V-shaped recess 4 of the carriage stopper 45
5c presses the engagement pin 25d of the lifter 25 in the E direction. Therefore, the lifter 25 rotates in the E direction in conjunction with the rotation of the carriage stopper 45 in the F direction, and the lifter 2
The locking portion 25c of No. 5 descends. Thereby, the head arm 20 also descends. Therefore, after the magnetic head 17 supported by the head arm 20 is stopped at a position close to the magnetic disk (not shown) in the standby mode, the lower magnetic head 16 and the magnetic disk Abut on each other.

As described above, since the magnetic head 17 moves to the recording / reproducing position where it slides on the magnetic disk by intermittent operation, the impact on the magnetic disk rotating at high speed is reduced, and the magnetic head 17 is formed on the surface of the magnetic disk. Damage to the magnetic film can be prevented. Note that the ejecting operation is the reverse of the above-described mounting operation, and thus the description thereof is omitted.

As described above, in the magnetic disk drive 11,
When the operating speed of the slider 13 is reduced by the mechanical damper mechanism 31 and the descent of the head arm 20 is performed intermittently, the operating speed of the magnetic head 17 in the height direction changes stepwise. Therefore, since the magnetic head 17 comes into contact with the magnetic disk at a slow operation speed from a position close to the magnetic disk, the magnetic head 17 does not bounce when it comes into contact with the magnetic disk, so that damage to the magnetic film is reliably prevented.

In the above embodiment, the magnetic disk device has been described as an example. However, the present invention is not limited to this. For example, an optical disk device, a magneto-optical disk device, or a card-shaped recording medium such as a memory card may be mounted. Needless to say, the present invention can be applied to a recording / reproducing apparatus and the like. In the above embodiment, the configuration in which the slider slides above the disk holder is described as an example. However, the present invention is not limited to this, and the present invention is also applied to a configuration in which the slider slides below the disk holder. can do.

[0078]

As described above, according to the first aspect of the present invention, the same holding member is provided with the guide shaft holding portion for holding the guide shaft and the solenoid holding portion for holding the solenoid, so that the guide shaft is held. It is not necessary to separately attach a holding member for holding the solenoid and a holding member for holding the solenoid, so that the number of parts can be reduced by that amount, and the work efficiency of the assembling process can be improved, thereby increasing the productivity.

According to the second aspect of the present invention, the holding member for holding the guide shaft has the guide shaft holding portion, the lever member supporting portion, the spring supporting portion, the solenoid fixing portion, and the position adjusting portion. By attaching the member, not only the guide shaft but also the lever member support portion, the spring support portion, the solenoid fixing portion, and the position adjustment portion can be attached. Therefore, five types of mounting locations can be simultaneously mounted by the holding member, and the number of parts can be reduced by that amount, and the production efficiency of the assembly process can be increased.

[Brief description of the drawings]

FIG. 1 is a plan view of a magnetic disk drive as an embodiment of a recording medium recording / reproducing apparatus according to the present invention.

FIG. 2 is an exploded perspective view showing a schematic configuration of a magnetic disk device.

FIG. 3 is a front view of the disk device.

FIG. 4 is a side view showing a state where the disk holder and the slider are combined.

FIG. 5 is an enlarged plan view showing a peripheral portion of a head carriage in a recording / reproducing mode.

FIG. 6 is a plan view showing a state where a holding member is attached.

FIG. 7 is a diagram for explaining a configuration of a holding member.

FIG. 8 is a plan view for explaining a mounting portion of a solenoid.

FIG. 9 is an enlarged plan view showing an attached state of a holding member.

FIG. 10 is an enlarged plan view showing a peripheral portion of a head carriage in an ejection mode.

FIG. 11 is an enlarged plan view showing a peripheral portion of a head carriage in a recording / reproducing mode.

FIG. 12 is an enlarged plan view showing a peripheral portion of a head carriage when a seek operation is performed in a recording / reproducing mode.

FIG. 13 is a front view for explaining the operation of the carriage stopper with respect to the head carriage.

FIG. 14 is a front view for explaining operations of a carriage stopper and a lifter with respect to a head arm.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Disk device 12 Holder 13 Slider 14 Frame 16 and 17 Magnetic head 18 Head carriage 21 and 24 Guide shaft 25 Lifter 25d Engagement pin 31 Damper mechanism 33 Torsion spring 36 Latch mechanism 38 Latch lever 45 Carriage stopper 45b Rack 45c V-shape Recess 46 stopper coupling lever 47 torsion spring 48 solenoid 49 plunger 50 holding member 51 guide shaft pressing member 52 voice coil motor 56 movable rack 61 holding member 61a flat plate portion 61b, 61c pressing portion 61e, 61f projection 61j female thread portion 62 to 64 mounting Bolt 65 Guide shaft holding part 66 Lever member supporting part 67 Spring supporting part 68 Solenoid holding part 69 Position adjusting part 70 Mounting part 71-73 Projecting part 74 Adjustment Belt

Claims (2)

[Claims] 1. A head for writing information on a recording medium or reading information recorded on the recording medium, a head arm having the head rotatably supported, and slidably mounted on a frame. A head carriage, a guide shaft that slidably guides the head carriage, a locking member that locks the head carriage when ejected, and a lever member that displaces the stopper member to a locking position or an unlocking position. And a solenoid for driving the lever member, comprising: a guide shaft holding portion for holding the guide shaft; and a solenoid holding portion for holding the solenoid, fixed to the frame. A holding member formed so as to simultaneously hold the guide shaft and the solenoid. A recording medium recording / reproducing apparatus characterized by the above-mentioned. 2. A head for writing information on a recording medium or reading information recorded on the recording medium, a head carriage rotatably supporting a head arm having the head, and sliding the head carriage. A guide shaft that guides as much as possible, a locking member that locks the head carriage when ejected, a lever member that displaces the locking member to a locking position or an unlocking position, and a solenoid that drives the lever member A recording / reproducing apparatus for recording / reproducing a recording medium, comprising: a spring member that rotationally urges the lever member; and a head arm driving member that regulates a rotational position of the head arm in conjunction with a mounting operation or an ejecting operation of the recording medium. An apparatus, comprising: a guide shaft holding unit that holds the guide shaft; and a lever unit that rotatably supports the lever member. A support portion, a spring support portion for supporting the spring member, a solenoid fixing portion for fixing the solenoid, and a position adjusting portion for the head arm drive member, and the guide is fixed to the frame. A recording medium recording / reproducing apparatus, comprising: a holding member formed to hold a shaft, the lever member, the spring member, the solenoid, and the position adjusting unit at the same time.