JPH11260009A - Turning mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a turning mechanism for retaining a press member for pressing a turning member onto a retention plate with a simple configuration in the turning mechanism for turning the turning member while pressing it in a specific direction. SOLUTION: The projecting part of a lift arm 42 is retained and is engaged to a cutout part of a disk holder 12 from a lower part. Then, the retention part of a press spring 44 is inserted into the lower side of the disk holder 12 and is engaged to the upper surface side of the disk holder 12 through the projecting part of the lift arm 42 and the cut-out part of the disk holder 12, thus retaining the projecting part of the lift arm 42 and the cut-out part of the disk holder 12 from the lower side by the press spring 44 and at the same time pressing the press spring 44 to the upper surface side of the disk holder 12, and pressing the press spring 44 onto the disk holder 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating mechanism, and more particularly, to a rotating mechanism that rotates while pressing a rotating member in a predetermined direction.

[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. As a magnetic disk device, for example, Japanese Patent Application Laid-Open No. 8-55
As disclosed in Japanese Patent Publication No. 402, when a disk cartridge as a recording medium is mounted, a magnetic disk accommodated in the disk cartridge is driven to rotate, and a magnetic head slides on the magnetic disk to perform magnetic recording and reproduction. Some are configured to do so.

In the above-mentioned magnetic disk drive,
A disk holder into which a disk cartridge is inserted,
A configuration having a recording medium transport mechanism including a slider that slides by a disk cartridge insertion operation to move a disk holder from a cartridge insertion / ejection position to a cartridge mounting position and loads a magnetic head at a position where it contacts a magnetic disk. It has become.

The slider is urged in one direction by a coil spring or the like. When the disk cartridge is inserted, the latch lever is pressed by the end of the disk cartridge to rotate and release the latch by the latch lever. Is done. 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.

In addition, the head lift mechanism is driven by the movement of the slider, and the magnetic head comes into contact with the disk.
At this time, in the conventional head lift mechanism, the magnetic head moves closer to or away from the disk by rotating a lift arm rotatably provided on the holder. The lift arm is rotated by the lifter.

FIG. 20 shows a configuration diagram of a conventional example. The lifter 100 is slidably provided on the disk holder 101, and slides in the directions of arrows A and B on the disk holder 101 according to the slide of the slider. Lifter 10
0 is provided with a convex portion 102, and the convex portion 102
By inserting and removing the convex portion 102 between the lift arm 103 and the disc holder 101 at one side end of the lift arm 103, the lift arm 103 is connected to the disc holder 1.
01 is rotated. The lift arm 103 is engaged with the head arm 105,
Moves up and down in response to the pivoting operation of the lift arm 103 to move the magnetic head 105 closer to and away from the disk.

At this time, the lift arm 103 is pressed toward the disk holder 101 by a spring. As a spring for pressing the lift arm 103 in the direction of the disk holder 101, a leaf spring is used. The leaf spring is screwed or caulked to the disk holder 101, or the disk holder 1
01 was held by cutting and raising formed by cutting and raising.

[0008]

However, in this type of conventional recording medium recording / reproducing apparatus, the convex portion of the lift is inserted between the disc holder and the lift arm at one side end of the lift arm, or By controlling the rotation angle of the lift arm with respect to the disk holder by pulling out, the head arm is moved up and down at the other end. Therefore, the lift arm is inclined, and the rotation of the lift arm cannot be performed stably. Has fallen below a predetermined level, and the head comes into contact with the recording medium, causing damage to the head.

A leaf spring for pressing the lift arm against the disk holder is provided on the disk holder 101 with screws, caulking,
Alternatively, since the disk holder 101 is held by cutting and raising formed by cutting and raising the disk holder 101, the work of engaging the plate spring with the disk holder 101 by operations such as screwing and caulking becomes complicated, or There is a problem that the structure is complicated due to cutting and raising.

The present invention has been made in view of the above points, and has as its object to provide a rotating mechanism capable of holding a pressing member for pressing a rotating member on a holding plate with a simple configuration.

[0011]

According to a first aspect of the present invention, there is provided a holding plate, a rotating member rotatably held by the holding plate,
In a rotating mechanism having a pressing member for pressing the rotating member against the holding plate, the rotating member has a convex portion at an end on a rotating shaft, and the holding plate has the convex portion. A support portion rotatably supported, and through holes formed on both sides of the support portion, wherein the pressing member is configured to press the rotating member and a positioning portion positioned on the holding plate; And a holding portion that passes through the through hole, is disposed below the support portion and the protrusion, holds the support portion and the protrusion, and holds the pressing member to the holding plate. It is characterized by having.

According to the first aspect, the holding portion is disposed below the projection and the support portion, and presses the pressing member in the direction of the holding plate.
The pressing member can be held on the holding plate, and at this time, the position on the holding plate is determined by the positioning portion, and the pressing member is screwed,
It can be securely held on the holding plate without using fixing means such as caulking. According to claim 2, in claim 1, the holding plate has a boss portion that fits into a positioning portion of the pressing member and positions the pressing member with respect to the holding plate,
The pressing member has a hole in which the positioning portion fits into the boss.

According to the second aspect, the pressing member can be positioned on the holding plate by fitting the hole of the pressing member into the boss formed on the holding plate, so that the pressing member can be easily held on the holding plate. Can be done. According to a third aspect, in the first or second aspect, the rotating member receives a rotating power at a side end of the first support portion, and the pressing member is configured to rotate the second supporting member of the second supporting member.
The rotating member is pressed in the direction of the holding plate at a portion of the side end of the supporting portion opposite to the portion receiving the rotating power of the side end of the first supporting portion.

According to the third aspect, the rotating member is pressed in the direction of the holding plate at a portion of the side end of the second supporting portion of the rotating member facing the side end of the first supporting portion. Thereby, the twist of the rotating member can be minimized, so that the rotating member can be surely rotated.

[0015]

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. In this embodiment, a floppy disk device will be described as a recording medium recording / reproducing device.

FIG. 1 is an exploded perspective view of one embodiment of the present invention, FIG. 2 is an exploded perspective view of a cover, a slider, a holder and a frame of one embodiment of the present invention, and FIG. 3 is a slider of one embodiment of the present invention. And an assembly configuration diagram of the holder. In the floppy disk drive 11 of this embodiment, a disk holder 12 into which a disk cartridge (not shown) is inserted, and a slider (sliding member) 13 that slides in the front-rear direction to move the disk holder 12 up and down. It is attached on the frame 14 in the state where it was set.

The slider 13 is provided on the disk holder 12 so as to be slidable in the directions A and B, and slides in the direction A by inserting a disk cartridge.
2 is lowered from the cartridge insertion / ejection position to the cartridge mounting position. The disk holder 12 has a top plate 12a and a cartridge guide portion 12 bent to hold a disk cartridge from both sides of the top plate 12a.
b, 12c. 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 moving the head carriage 18, and a pair of support portions 12h for rotatably supporting the lift arm 42 is cut and raised on the left side of the opening 12d. ing.

The slider 13 includes a flat plate 13a which slides above the disk holder 12, side surfaces 13b and 13c bent downward from both sides of the flat plate 13a, and side surfaces 13b and 13b.
c, an inclined groove 13d in which the engaging pin 12e of the disc holder 12 is fitted, and both side surfaces 14e of the frame 14,
A contact portion 13e contacting the upper end of the disc holder 14f; and a hole 1 provided in the center of the disc holder 12 in the ejected state.
2g.

The flat plate 13a of the slider 13 has
Coil springs 51 and 52 for urging the slider 13 in the A direction
13g and 13h are provided. The openings 13g and 13h are formed to extend in the A and B directions, and engaging portions 13i and 13j to which one ends of the coil springs 51 and 52 are engaged project from the ends in the B direction. The other ends of the coil springs 51, 52 are hooked on hooks 12i, 12j projecting from the top plate 12a of the disc holder 12. Therefore, the slider 13 includes the coil springs 51 and 52
Is urged in the A direction by the spring force of.

FIG. 4A is a plan view showing the structure of the frame 14. FIG. 4B is a rear view showing the structure of the frame 14. As shown in FIGS. 1 to 4, a circular opening 1 into which a turntable 15 for clamping a disc is inserted is provided on a plane 14 a of the frame 14.
4b, and a carriage mounting portion 14c to which a head carriage 18 supporting the magnetic heads 16 and 17 is slidably mounted in the A and B directions. At the rear of the frame 14, a motor mounting portion 14d to which a motor 25 for driving the head carriage 18 is mounted is provided.

Both sides of the carriage mounting portion 14c and the motor mounting portion 14d are cut into a rectangular shape.
Therefore, the rear part of the frame 14 is
Only 4c and the motor mounting portion 14d have a shape protruding rearward. Also, both side surfaces 14e, 1 of the frame 14
Guide grooves 14g and 14h for guiding the elevating operation of the disk holder 12 are provided at an intermediate position of the inner wall of 4f. Further, a circuit board 20 on which a turntable 15 and a disk motor 19 for rotating the turntable 15 are mounted is mounted on the lower surface side of the frame 14.

The head carriage 18 has a carriage main body 21 which supports the lower magnetic head 16 on the top surface of the front end, and a carriage main body 21 which supports the upper magnetic head 17 on the bottom surface of the front end.
And a head arm 22 rotatably attached to the head arm 22. Further, the head carriage 18 is guided by the guide shaft 23 and the lead screw 24 extending in the front-rear direction (A and B directions) and according to the rotation amount of the lead screw 24 in the direction corresponding to the rotation direction of the lead screw 24. Move a distance. Guide shaft 23
Is a plate-like pressing member 2 on the flat surface 14a of the frame 14.
9 (not shown), and is inserted into a fitting portion 21 a provided on the right side surface of the carriage body 21.

The lead screw 24 is screwed to a screw (not shown) provided on the left side of the carriage body 21 on the opposite side. And lead screw 2
The motor 25 for driving the rotation of the motor 4 is mounted on the lower surface of a motor mounting portion 14 d provided at the rear of the frame 14. Therefore, the head carriage 18 moves in the A and B directions while being guided by the guide shaft 21 and the guide shaft 24 by the rotational driving force of the motor 25 that rotationally drives the lead screw 24. 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 plane 14a of the frame 14,
A protector 26 for preventing the end of the disk cartridge inserted into the disk holder 12 from colliding with the lower magnetic head 16 is provided so as to be slidable in the C and D directions by being guided by a pin 14i projecting above the plane 14a. Have been.
The protector 26 is connected to a pin 27 a provided at one end of an L-shaped link 27, and a pin 27 b provided at the other end of the link 27 is engaged with an engagement portion 13 k of the slider 13.

Therefore, before the disk cartridge is inserted into the disk holder 12, the protector 26 is close to the side of the lower magnetic head 16. At this time, the protector 26 rides on the inclined portion 28 formed on the plane 14 a of the frame 14 and is lifted above the lower magnetic head 16. Accordingly, the disk cartridge is prevented from sliding above the protector 26 and moving above the lower magnetic head 16 to collide with the lower magnetic head 16.

Then, the slider 13 slides in the direction A and separates from the lower magnetic head 16. Therefore, when the slider 13 slides in the direction A, the protector 26 slides in the direction D and descends below the inclined portion 28, and the magnetic disk is brought into contact with the lower magnetic head 16. FIG. 5 is an exploded perspective view of the latch mechanism according to one embodiment of the present invention.

As shown in FIGS. 1 and 5, at the rear of the upper surface of the disk holder 12, a latch mechanism 36 for latching the slider 13 is provided. This latch mechanism 36
Are a latch lever 38 rotatably supported on the upper surface of the disk holder 12, a coil spring 39 for urging the latch lever 38 to rotate counterclockwise, and a cam portion provided on the top plate 13a of the slider 13. 46.

FIG. 6 is a view for explaining the shape of the latch lever according to one embodiment of the present invention. FIG. 6A is a plan view,
6B is a side view, FIG. 6C is a front view, and FIG.
6A is an enlarged plan view of the portion A, and FIG. 6E is an enlarged side view of the portion A. As shown in FIGS. 6A to 6E, the latch lever 38 has a shaft hole 38a at one end through which a shaft at the rear of the upper surface of the disk holder 12 is inserted, and a shutter (not shown) of the disk cartridge at the other end. ) To open the claw portion 38b.
The latch lever 38 has a hook portion 38c at which one end of the coil spring 39 is hooked at the middle in the longitudinal direction, and a sliding contact portion 38d which comes into sliding contact with the cam portion of the slider 13.
The other end of the coil spring 39 is connected to the disc holder 1.
It is hooked on a hook 12k provided on the second top plate 12a.

A locking portion 38e for preventing the slider 13 from coming off is bent at the upper end of the sliding contact portion 38d. A restricting portion 38f that regulates the rotation height position is provided on the upper portion of the claw portion 38b so that the claw portion 38b is held at the insertion height position of the disc cartridge inserted into the disc holder 12. I have. As shown in FIG. 5, a shaft which is inserted through a shaft hole 38a of the latch lever 38 and supports the latch lever 38 so as to be rotatable in the E and F directions is provided at a rear portion of the top plate 12a of the disk holder 12. 1
2m, a disengagement prevention portion 12n that is inserted into the groove 38g of the latch lever 38 at the time of assembling and that restricts the upward movement of the latch lever 38 thereafter protrudes. Pull-out prevention unit 12
n is a projection 12 that regulates the height position of the upper surface of the latch lever 38 so that the latch lever 38 does not come off the shaft 12m.
n ₁ is protruded in a horizontal direction. Further, the claw portion 38 of the latch lever 38 is provided on the top plate 12a of the disc holder 12.
b is an arc-shaped opening 1 inserted into the disc holder 12
2o is provided.

Further, on both sides of the disk holder 12,
A pair of engaging pins 12e is provided for engaging with the slider 13.
f is protruding. The guide portion 12f is used for the frame 1
The guide grooves 14g provided in the side walls 14e, 14f
14h to guide the elevating operation of the disk holder 12.

A cover 45 is provided above the slider 13 so as to cover the upper part of the frame 14. The cover 45 is screwed on both sides to the frame 14 to prevent the slider 13 from floating upward, and also to prevent the slider 13 from moving in the front-rear direction. Next, the latch mechanism 36 will be described.

As shown in FIGS. 1, 2, 3, and 7, the flat plate 13a of the slider 13 is provided with a cam portion 46 for engaging the latch lever 38 described above. The cam portion 46 has an arc-shaped portion 47 in which the sliding portion 38d of the latch lever 38 slides while moving in the rotating direction in the process of inserting the disk cartridge, and an arc-shaped portion 47 when the insertion of the disk cartridge is completed. And an escape portion 48 formed in a direction away from the sliding contact portion 38d that has passed through.

The flat plate 13a of the slider 13 has
The cam portion 46 is formed, and a fan-shaped opening 49 for moving with the sliding portion 38d inserted is provided. Further, outside the opening 49, the latch lever 38 is provided.
And an arc-shaped opening 50 which is provided at the tip of the disk cartridge and faces the rotation range of the claw portion 38b which engages with the shutter of the disk cartridge.

Further, a contact portion 53 extending in the direction B is provided at the rear of the flat plate 13a of the slider 13.
The contact portion 53 is a motor mounting portion 14 provided at the rear portion of the frame 14 while the slider 13 slides in the A and B directions.
d, and comes into contact with the guide wall 62 rising above
3 guides the sliding operation. FIG. 8 is a perspective view showing a state in which a latch lever is attached to a top plate of a disk holder according to one embodiment of the present invention, and FIG. 9 is a state in which a slider is attached above the latch lever according to one embodiment of the present invention. FIG.

As shown in FIG. 8, when the disk cartridge is inserted into the disk holder 12, the latch lever 38 rotates in the direction E against the spring force of the coil spring 39. At this time, the shutter of the disk cartridge engages with the claw 38b provided at the tip of the latch lever 38 and slides in the opening direction. The latch lever 38 does not have a cam portion at the rear portion on which the protrusion of the slider 13 slides, so that the latch lever 38 does not project rearward from the disk holder 12 even when rotated in the E direction.

Further, as shown in FIG.
Since the rear end of the disk holder 3 is located forward of the rear end of the disk holder 12, the rear end of the disk holder 3 does not protrude rearward from the disk holder 12. Therefore, the latch lever 3
There is no need to secure a space behind the frame 8, and the shape of the frame 14 is correspondingly reduced to a rectangular shape on both sides of the carriage mounting portion 14c and the motor mounting portion 14d as shown in FIG. I have. Therefore, the installation space of the frame 14 can be reduced, and the size and the space of the floppy disk device 11 can be reduced.

Next, a description will be given of a disk mounting operation of the floppy disk device 11 configured as described above.
FIG. 10 is a diagram showing a positional relationship between the disk holder 12 and the slider 13 in a state where the disk cartridge has been ejected. As shown in FIGS. 10A to 10D, since the engaging pin 12e of the disk holder 12 is fitted into the inclined groove 13d of the slider 13, the slider 1
The sliding operation of 3 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, in the ejected state shown in FIG. 10, the disk cartridge (not shown) is
When it is inserted into the inside, the claw portion 38b of the latch lever 38 is pressed and rotates clockwise (E direction). The sliding portion 38d of the latch lever 38 is connected to the top plate 13 of the slider 13.
The arc-shaped portion 47 of the cam portion 46 provided in the position a is slidably contacted.

The disk cartridge is the disk holder 1.
When the shutter is inserted to the back of
8, and the sliding contact portion 38d of the latch lever 38 passes through the arc-shaped portion 47 of the cam portion 46 and faces the escape portion 48 of the cam portion 46. Therefore, since the latch 13 is released from the latch by the latch lever 38, the slider 13 slides in the direction A by the spring force of the coil springs 51 and 52.

FIG. 11 is a diagram showing a positional relationship between the disk holder 12 and the slider 13 in a state where the disk cartridge is mounted. Since both sides of the disk holder 12 are supported so as to be movable only in the vertical direction with respect to the left and right side surfaces of the frame 14, when the slider 13 slides in the direction A in this manner, the engagement pins 12e of the disk holder 12 are moved. The slider 13 is driven downward along the inclined groove 13d to descend from the cartridge insertion / ejection position shown in FIG. 10 to the cartridge mounting position shown in FIG.

In the ejecting operation, when the slider 13 is slid in the direction B, the disk holder 12 returns to the cartridge insertion / ejection position shown in FIG. At the same time, the latch lever 3
8 ejects the disc cartridge in the direction A while rotating in the direction F by the spring force of the coil spring 39. The disc cartridge is ejected from the disc holder 12 by the ejecting operation after the shutter is closed.

Next, the head arm lift mechanism 41 which characterizes the present invention will be described in detail. The head arm lift mechanism 41 is provided on the upper surface of the disk holder 12. The head arm lift mechanism 41 holds the head arm 22 at a raised position where it does not come into contact with the disk cartridge when the disk cartridge is not inserted and the disk cartridge is not inserted.

The head arm lift mechanism 41 includes a lift arm 42 in contact with the lower surface of the head arm 22, a lifter 43 for pressing the lift arm 42 upward when not inserted, and a press for pressing the lift arm 42 downward. And a spring 44. FIG. 12 shows a configuration diagram of a lift arm according to one embodiment of the present invention. FIG. 12A shows the lift arm 42.
12 (B) is a left side view of the lift arm 42, FIG. 12 (C) is a right side view of the lift arm 42, and FIG.
FIG. 2D shows a cross-sectional view of the lift arm 42 taken along the line AA.

The lift arm 42 is formed by stamping and bending a single metal plate. The lift arm 42
A head arm pressing portion 42a which is mainly disposed on the lower surface side of the protruding portion 22a of the head arm 22 and presses the head arm 22 upward from the lower surface when the disk is ejected, and is rotatable by a support portion 12h formed on the disk holder 12. , The head arm pressing portion 42a and the engaging portion 42
b. In addition,
The width W of the head arm pressing portion 42a is
Is set longer than the moving distance of the head arm 22.
The engagement of the head arm 22 with the protruding portion 22a is maintained at any position.

The engaging portion 42b is formed with a convex portion 42d which engages with the supporting portion 12h of the disk holder 12. The convex part 42d is provided on the support part 12h of the disk holder 12.
And the lift arm 42 is rotatably held on the holder 12. A biasing portion 42 that engages with a pressing spring 44 and receives a pressing force is provided at a side end of the head arm pressing portion 42a.
e is formed integrally with the head arm pressing portion 42a. An end of the pressing spring 44 is engaged with the urging portion 42e,
The arm portion 42c of the head arm 42 is urged downward by the pressing spring 44.

FIG. 13 is a perspective view of a pressing spring according to one embodiment of the present invention. The pressing spring 44 is composed of a leaf spring, one end of which is fixed to the disk holder 12 and the other end of which is engaged with the urging portion 42 e of the lift arm 42. The pressing spring 44 is formed by punching and bending a metal plate.
A spring portion 44b which engages with the second urging portion 42e to urge the head arm 42 downward, and an engaging portion 42 of the lift arm 42.
It is composed of a holding portion 44c for holding b from below.

The fixing portion 44a has a hole 44d. The screw is inserted into the hole 44d and screwed into the disk holder 12 to be fixed to the disk holder 12. The spring portion 44b has a biasing portion 4 of the head arm 42 at the distal end.
A pressing portion 44e abutting on 2e is formed. The holding portion 44c is formed to extend leftward from a substantially intermediate position between the fixing portion 44a and the spring portion 44b, and is formed to support the lift arm 42 of the disk holder 12.
When the lift arm 42 of the disc holder 12 is assembled,
2d from below the support portion 12h, and lift arm 4
2 is prevented from falling off.

FIG. 14 is an exploded perspective view of the lift arm and the pressing spring according to one embodiment of the present invention when assembled. FIG.
As shown in FIG.
A hole 12p is formed on the side surface. Lift arm 42
In order to hold the disc holder 12 on the disc holder 12, first, one of the engaging portions 42b of the lift arm 42,
d-1 is engaged with one of the holes 12p-1 in the direction of arrow A of the disk holder 12, and then the other of the engaging portions 42b of the lift arm 42 and the convex portion 42d-2 in the direction of arrow B are inserted into the disk holder 12. On the other hand, the notch 12p-2 in the direction of arrow A is engaged. The notch 12p-2 has a U-shape that opens downward, and the protrusion 42d-2 has a notch 12p-2.
-2 can be engaged from below.

Next, the holding portion 44c of the pressing spring 44 is inserted through the hole 12r formed on the outside of the support portion 12h of the disk holder 12 and inserted into the lower portion of the disk holder 12, and the tip portion of the holding portion 44c is formed. Is engaged with the upper surface of the disk holder 12. At this time, the pressing portion 44d at the tip of the spring portion 44b is arranged on the upper surface of the urging portion 42e of the lift arm 42. As described above, the holding portion 44c of the pressing spring 44 is located at the opening of the notch 12p-2, and the protrusion 42d-2 of the lift arm 42 is prevented from falling off from the notch 12p-2.

The positioning hole 44 e formed in the fixing portion 44 a of the pressing spring 44 is engaged with the boss b formed on the disk holder 12 and positioned on the disk holder 12. FIG. 15 is a perspective view of a main part when assembling the lift arm and the pressing spring according to one embodiment of the present invention, and FIG. 16 is a cross-sectional view of a main part when assembling the lift arm and the pressing spring according to one embodiment of the present invention. Show.

At this time, the engaging portion 42 of the lift arm 42
b denotes a projection 42 at the notch 12p-2 of the disc holder 12.
d-2 engages from below. Further, the holding portion 44c of the pressing spring 44 penetrates the holes 12r and 12s, engages with the disc holder 12, and
h. Therefore, when a force in the direction of arrow H is applied to the engagement portion 42b of the lift arm 42, the lower surface side of the engagement portion 42b of the lift arm 42 is held by the holding portion 44c of the pressing spring 44, and the engagement of the lift arm 42 is performed. The part 42b does not fall off from the support part 12h of the disk holder 12.

The arm portion 42c of the lift arm 42
Engages with the lifter 43 and is rotated in the directions of the arrows K and L according to the insertion and ejection of the disk. The lifter 43 is provided below the lift arm 42, slides in the directions of arrows A and B, engages with the lift arm 42, the peripheral edge of the through hole 42 f, and the side end 42 g of the lift arm 42, and Lift arm 42 in accordance with the sliding operation in the directions of arrows A and B
Up and down.

FIG. 17 shows a configuration diagram of a lifter according to one embodiment of the present invention. FIG. 17A is a plan view of the lifter 43, and FIG.
17B is a cross-sectional view taken along line AA of the lifter 43, FIG. 17C is a cross-sectional view of a main part of the lifter 43, and FIG. 17D is a front view of the lifter 43. The lifter 43 is formed by punching and bending a single metal plate, and engages with a slide portion 43a that slides by engaging with the disk holder 12 and a side end portion 42f of the lift arm 42, The lift unit 43 includes a lifting unit 43b for rotating the lift arm 42, and a pressing unit 43d that slides the slide unit 43a in accordance with the slide of the slider 13 and presses the slide unit 43a toward the disk holder 12.

The elevating part 43b is formed at one end of the slide part 43a. The lifting part 43b is disengaged from the side end 42f of the lift arm 42 when the disc is mounted, and is formed on the lower surface of the arm part 42c of the lift arm 42 when the disc is ejected. Inserted.
The pressing portion 43c is configured to be bent upward from the other end of the slide portion 43a, and an engagement portion 43d that engages with the slider 13 is formed at the tip thereof. The pressing portion 43c is elastically connected to the sliding portion 43a and the engaging portion 43d, the disk is inserted into the disk holder 12, the disk holder 12 is lowered, and the space between the disk holder 12 and the slider 13 is increased. Even at this time, the engagement portion 43d is securely engaged with the slider 13 by the elasticity of the pressing portion 43c.

FIG. 18 is an exploded perspective view of a lifter and a disk holder according to one embodiment of the present invention. The lifter 43 is guided by a guide 12q whose slide portion 43a is cut and raised on the upper surface of the disk holder 12, and is guided so as to be movable only in the directions of arrows A and B. A portion of the slider 13 facing the engaging portion 43e of the lifter 43 includes an engaging portion 43e.
Is formed. Pressing part 43d
Of the lifter 43 and the slider 13
The engagement state with the claw portion 131 is always maintained.

Next, the operation of the head arm lift mechanism 41 will be described. FIG. 19 is a diagram for explaining the operation of the head arm lift mechanism according to one embodiment of the present invention. FIG. 19A shows the state of the head arm lift mechanism 41 when the disc is ejected, and FIG.
FIG. 9B shows the state of the head arm lift mechanism 41 when the disc is mounted. The head arm lift mechanism 41 moves the slider 13 in the direction of arrow B as shown in FIG. 19A when the disc is ejected, so that the lifter 43 also moves in the direction of arrow B.

When the lifter 43 is moved in the direction of arrow B, the elevating part 43b goes under the lower surface of the arm part 43c of the lift arm 42 as shown in FIG. 19A, and the lift arm 42 rotates in the direction of arrow K. It is in a state where it has been done. When the lift arm 42 is rotated in the direction of the arrow K, the head arm 22 is rotated in the direction of the arrow G to be in a head-up state.

When the disk is mounted on the disk holder 12 and inserted in the direction of arrow B, the slider 13 slides in the direction of arrow A. When the slider 13 slides in the direction of arrow A, the lifter 43 moves in the direction of arrow A according to the sliding of the slider 13. When the lifter 43 moves in the direction of arrow A, the elevating part 43b moves in the direction of arrow A,
The elevating part 43b is separated from the lower surface of the end part 42f of the lift arm 42. As a result, the lift arm 42 is released from holding the lower surface of the arm portion 42c by the lifting / lowering portion 43b, and is pressed by the pressing spring 44 in the direction of the arrow L.
It is rotated in the direction of arrow L as shown in FIG.

When the lift arm 42 is turned in the direction indicated by the arrow L, the head arm 22 is turned in the direction indicated by the arrow H until the urging portion 42e comes into contact with the disk holder 12, and the head is brought down. The head 17 comes into contact with the disk by being in the head down state. During the insertion of the disc into the disc holder 12, the disc holder 1
2 moves in the direction of arrow H, and the disk holder 12 and the slider 13 are separated from each other. At this time, the lifter 43 presses the engaging portion 43d in the direction of arrow G by the pressing portion 43c, thereby engaging the slider 13 with the slider 13. The state is maintained.

As described above, according to the head arm lift mechanism 41 of this embodiment, the lifter 43 of the lift arm 42
, Ie, the end portion 42f, and the engaging portion with the pressing spring 44 for urging and pressing the lift arm 42, ie, the engaging portion 42b in which the urging portion 42e serves as a support shaft of the lift arm 42. , The inclination and distortion of the lift arm 42 can be reduced as compared with the case where the lift 43 and the pressing spring 44 are disposed diagonally to the lift arm 42. Therefore, the rotation of the head arm 22 can be performed reliably, and the head 17 can be reliably moved up and down.

Further, the lift arm 42 is pressed downward, that is, the engaging portion 42 on the side where the pressing spring 44 is attached.
b is held by the holding portion 44c of the pressing spring 44 so that the driving force for raising the head pressing portion 42a of the lift arm 42 acts on the end 42f of the lift arm 42, and the pressing spring 44 of the lift arm 42 Even if an attempt is made to push down the engaging portion 42b on the side, the engaging portion 42b on the pressing spring 44 side is supported by the holding portion 44c of the head spring 44, so that the engaging portion 42b does not descend, so that the lift arm 42 is inclined. There is no. Therefore, the rotation of the head arm 22 can be surely performed, and the up and down of the head 17 can be surely performed.

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, a card-shaped recording medium such as an optical disk device, a magneto-optical disk device, or 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.

[0063]

As described above, according to the first aspect of the present invention, the holding portion is disposed below the projection and the support portion, presses the pressing member in the direction of the holding plate, and places the pressing member on the holding plate. At this time, the position on the holding plate is determined by the positioning portion, so that the pressing member can be securely held on the holding plate without using fixing means such as screws and caulking.

According to the second aspect, the pressing member can be positioned on the holding plate by fitting the hole of the pressing member into the boss formed on the holding plate, so that the pressing member can be easily held on the holding plate. It has features such as being able to be performed. According to the third aspect, by pressing the rotating member toward the holding plate at a portion of the side end of the second support portion of the rotating member facing the side end of the first support portion, Since the torsion of the rotating member can be minimized, the rotating member can be surely rotated.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of one embodiment of the present invention.

FIG. 2 is an exploded perspective view of a cover, a slider, a holder, and a frame according to one embodiment of the present invention.

FIG. 3 is an assembly configuration diagram of a slider and a holder according to one embodiment of the present invention.

FIG. 4 is a configuration diagram of a frame according to an embodiment of the present invention.

FIG. 5 is an exploded perspective view of the latch mechanism according to the embodiment of the present invention.

FIG. 6 is a configuration diagram of a latch lever according to an embodiment of the present invention.

FIG. 7 is a configuration diagram of a slider according to an embodiment of the present invention.

FIG. 8 is a perspective view showing a state in which a latch lever is attached to a top plate of the disk holder according to the embodiment of the present invention.

FIG. 9 is a perspective view showing a state in which a slider is mounted above a latch lever according to one embodiment of the present invention.

FIG. 10 is a diagram showing a positional relationship between a disk holder and a slider in a state where a disk cartridge according to an embodiment of the present invention has been ejected.

FIG. 11 is a diagram showing a positional relationship between a disk holder and a slider in a state where a disk cartridge according to an embodiment of the present invention is mounted.

FIG. 12 is a configuration diagram of a lift arm according to one embodiment of the present invention.

FIG. 13 is a configuration diagram of a pressing spring according to an embodiment of the present invention.

FIG. 14 is an exploded perspective view of a lift arm, a pressing spring, and a disk holder according to one embodiment of the present invention.

FIG. 15 is a configuration diagram of a main part when assembling a lift arm, a pressing spring, and a disc holder according to an embodiment of the present invention.

FIG. 16 is a cross-sectional view of a main part when assembling the lift arm, the pressing spring, and the disk holder according to the embodiment of the present invention.

FIG. 17 is a configuration diagram of a lifter according to an embodiment of the present invention.

FIG. 18 is an exploded perspective view of a lifter and a disk holder according to one embodiment of the present invention.

FIG. 19 is an operation explanatory view of a head arm lift mechanism according to one embodiment of the present invention.

FIG. 20 is a configuration diagram of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Disk device 12 Holder 12p-1 Hole 12p-2 Notch 13 Slider 14 Frame 15 Turntable 16, 17 Magnetic head 18 Head carriage 24 Lead screw 25 Drive motor 36 Latch mechanism 38 Latch lever 42 Lift arm 42a Head pressing part 42b Engaging part 42c Arm part 42d-1, 42d-2 Convex part 42e Energizing part 42f End part 43 Lifter 44 Press spring 44a Fixed part 44b Spring part 44c Holding part 44d Press part 46 Cam part 47 Arc part 48 Escape part

Claims (3)

[Claims] 1. A rotating mechanism having a holding plate, a rotating member rotatably held by the holding plate, and a pressing member for pressing the rotating member against the holding plate, wherein the rotating member Has a convex portion at an end on a rotation axis, the holding plate has a support portion rotatably supporting the convex portion, and through holes formed on both sides of the support portion. The pressing member presses the rotating member, a positioning portion positioned on the holding plate, passes through the through hole, is disposed below the support portion and the convex portion, A rotating mechanism, comprising: a holding portion that holds a supporting portion and the convex portion and holds the pressing member on the holding plate. 2. The holding plate has a boss portion that fits into a positioning portion of the pressing member to position the pressing member with respect to the holding plate. The rotating mechanism according to claim 1, further comprising a hole that fits into the boss. 3. The rotating member receives a rotating power at a side end of the first support portion, and the pressing member is configured to rotate the second support portion at a side end of the second support portion of the rotary member. 3. The rotating mechanism according to claim 1, wherein the rotating member is pressed in the direction of the holding plate at a portion of the side end of the first support portion that faces a rotational force. 4.