JPH11250543A - Record medium recording/reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the operability of pushing a disk cartridge into a holder. SOLUTION: The cam section 46 of a slider 13 is composed of a circular-arc part 47, a slope part 60 continuing from the circular-arc part 47, and a relief part 48 continuing from the slope part 60. The slope part 60 is inclined at an angle θ in a counterclockwise with respect to A and B directions. The slider 13 has a horizontal groove 61 extended from the upper part of an inclined groove 13d in the B direction. When a slide-contact part 38d goes over the circular-arc part 47 to reach the horizontal groove 61, the slider 13 is slid in the A direction by a spring, the slope part 60 pushes the slide-contact part 38d in a C direction, and the rotational force of a clock direction is applied to a latch lever. This rotational force operates to assist a rotational force for rotating the latch lever by a pushed in disk cartridge. Thus, an operating force added to a finger tip for pushing in the disk cartridge is reduced by an amount equivalent to this rotational force, and a feeling like the pulling-in of the disk cartridge is left in the finger tip for pushing in the same.

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 in which a disk cartridge is mounted by pushing a disk cartridge into a holder.

[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,
The recording medium transport mechanism includes a slider for sliding the disk holder from the cartridge insertion / ejection position to the cartridge mounting position by sliding by a disk cartridge insertion operation. The slider is
When the disk cartridge is inserted, the latch lever is pressed by the end of the disk cartridge to rotate, and the latch by the latch lever is released by the coil spring. 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]

However, in the above-mentioned conventional magnetic disk drive, a cam portion formed in an arc shape is provided at the rear end of the slider of the latch lever so that the cut and raised projection is in sliding contact. When the latch lever is rotated in the insertion direction by the operation of inserting the disk cartridge, the cam portion of the latch lever slides on the protrusion of the slider, thereby restricting the sliding operation of the slider. When the insertion operation of the disk cartridge is completed, the side of the cam portion is oriented parallel to the sliding direction of the slider. Therefore, the latch is released from the engagement of the cam portion of the latch lever with the projection, and can slide.

However, in such a conventional structure, it is necessary to provide a projection which is engaged with the latch lever at the rear end of the slider. Must be formed rearward without touching the edges. Therefore, in the conventional magnetic disk device, it is difficult to reduce the size and space of the device in order to secure the space behind the latch lever.

FIGS. 15A and 15B show a part of a recording medium recording and reproducing apparatus devised by the present inventor to reduce the size and space of the apparatus. FIG. 15A shows a state where the disk cartridge 9 is mounted. Slider 1
Is slidably supported by the holder 2, has a cam portion 4 at a portion facing the rotation range of the latch lever 3, and is urged in the A direction by a spring. The latch lever 3
The pin 6 is rotatably supported on the holder 2, is urged to rotate counterclockwise by a spring, and has a sliding portion 5 that slides on the cam portion 4 at an intermediate portion thereof. Before the disk cartridge 9 is inserted, the latch lever 3 is oriented substantially in the direction A. As the disk cartridge is inserted to the final position, the latch lever 3 is pushed by the leading end of the disk cartridge in the insertion direction and moves clockwise substantially in the direction C. To open the shutter of the disk cartridge. The cam part 4 has an arc-shaped part 4a and a relief part 4b.
And The arc-shaped portion 4 a
Is a portion where the sliding portion 5 slides while moving in the rotation direction in the process of being inserted. The escape portion 4b is located at the end of the arc-shaped portion 4a, and extends in the A and B directions that are the sliding directions of the slider 1.

In this recording medium recording / reproducing apparatus, when the disc cartridge 9 is inserted into the holder 2, the latch lever 3 is rotated clockwise in the latter half of the insertion, and the position P
1 moves to the position P2 and the escape portion 4b moves along the sliding contact portion 5 at the stage where the sliding contact portion 5 moves out of the arc-shaped portion 4a, so that the slider 1 slides in the A direction. Then, the holder 2 is moved down, and the disc cartridge 9 is mounted. The sliding portion 5 moves to the position P3 with respect to the cam portion 4.

The operator presses the disk cartridge 9 with his fingertip and pushes it into the holder 2 to the final insertion position in FIG. In the latter half of the stage, the latch lever 3 is
As shown in FIG. 16 (A), the slider 1 is slid in the direction A as shown in FIG. Since the operator pushes the disk cartridge 9 with the fingertip until the latch lever 3 is fully rotated against the spring, the pushing force is as shown in FIG.
It increases proportionally as shown in FIG. Since this increase continues until the disk cartridge 9 reaches the final position, the finally required pushing force is increased to F1.
For this reason, the pushing operation at the final stage is felt heavy, and the feeling of the disc cartridge mounting operation is not good.

Accordingly, 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. According to the first aspect of the present invention, the recording medium can be moved between a frame, a recording medium insertion / eject position at which a recording medium is inserted into the frame, and a recording medium mounting position at which the lower magnetic head and the upper magnetic head come into contact. A holder provided, a latch lever attached to the holder, which is pushed by the recording medium during the process of inserting the recording medium into the holder, and which rotates in the insertion direction, and which is supported by the frame. Having an inclined groove to be fitted to the engagement pin of the holder, the latch being released by the rotation of the latch lever, sliding in one direction, and moving the holder to the recording medium mounting position, A recording medium recording apparatus comprising: a sliding member for returning the holder to the recording medium insertion / ejection position by sliding in another direction; and a spring for urging the sliding member to move in the one direction. In the raw device, a cam portion is provided on a portion of the sliding member that faces the rotation range of the latch lever, and a sliding contact portion that slides on the cam portion is provided on an intermediate portion of the latch lever. An arc-shaped portion that slides in contact with the recording medium until the recording medium reaches a position immediately before reaching a final insertion position while the sliding contact portion moves in a rotating direction in a process of pushing and inserting the recording medium; Continued from the end of the arc-shaped portion, until the recording medium reaches the final insertion position from the position immediately before the above,
A sliding portion that slides on the sliding member when the sliding member slides, and a relief portion that extends in the sliding direction of the sliding member following the slope portion; When the portion reaches the end of the arc-shaped portion, the sliding member starts to move in the one direction by the spring force of the spring, and the slope portion pushes the sliding contact portion to push the latch lever in the insertion direction. It is configured to generate a rotating force for rotation.

The load applied to the fingertip for pushing the recording medium is:
What increased almost in proportion to the press of the recording medium, almost no longer increased in the final stage.
The feeling as if the recording medium is pulled in remains, and a good operation feeling can be obtained. The invention according to claim 2 is characterized in that the sliding member extends horizontally from an upper end of the inclined groove and has a horizontal groove whose length is longer than the length of the sliding member on the inclined surface in the sliding direction. In the movement of the sliding member while the slope portion is in contact with the sliding contact portion, the horizontal groove is engaged with the engaging pin of the holder, and the holder is kept at the recording medium insertion / ejection position. It is configured so that

At the fingertip, a feeling as if the recording medium is pulled in remains more reliably, and a good operation feeling can be obtained more reliably.

[0013]

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 an exploded perspective view showing a schematic configuration 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 cover, a slider, a holder, and a frame in an enlarged manner. In addition, FIG.
(C) is a diagram showing a state where the slider and the holder are combined.

As shown in FIGS. 1 to 3, a magnetic disk drive 11 includes a disk holder 12 into which a disk cartridge (not shown) is inserted, and a slider for sliding the disk holder 12 up and down by sliding back and forth. (Sliding member)
13 are mounted on the frame 14 in a state where they are overlapped with each other. The slider 13 is A, B on the disk holder 12.
The disc holder 12 is slidably moved in the direction A by the insertion operation of the disc cartridge to lower the disc holder 12 from the cartridge insertion / ejection position to the cartridge mounting position.

The disk holder 12 includes 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 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 that 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.

On the flat plate 13a of the slider 13,
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 in 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 end, and a carriage main body 21 which supports the upper magnetic head 17 on the bottom 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 held on a flat surface 14a of the frame 14 by a plate-shaped pressing member (not shown), and is inserted into a fitting portion 21a provided on the right side surface of the carriage body 21.
Further, the lead screw 24 is screwed to a screwing portion (not shown) provided on the left side surface on the opposite side of the carriage main body 21.

A motor 25 for rotating the lead screw 24 is mounted on a lower surface of a motor mounting portion 14d provided at a rear portion of the frame 14. for that reason,
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 at the same time 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 for explaining the configuration of the latch mechanism.

As shown in FIGS. 1 and 5, a latch mechanism 36 for engaging the slider 13 is provided at the rear of the upper surface of the disk holder 12. 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. 6 (A) is a plan view, FIG. 6 (B) is a side view, FIG. 6 (C) is a front view, FIG. 6 (D) is an enlarged plan view of part A, and FIG. 6 (E) is an enlarged side view of part A. It is. FIG.
As shown in (E), the latch lever 38 has a shaft hole 3 through which a shaft at the rear of the upper surface of the disk holder 12 is inserted at one end.
8a, and a claw 38b at the other end for opening a shutter (not shown) of the disk cartridge. 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 hooked on a hook 12k provided on the top plate 12a of the disc holder 12.

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.

On the upper surface of the disk holder 12, there is provided a head arm lift mechanism 41 for holding the head arm 22 at a raised position where the head arm 22 does not come into contact with the disk cartridge when the disk cartridge is not inserted. I have. This head arm lift mechanism 41
Is a lift arm 4 that contacts the lower surface of the head arm 22.
2, a lifter 43 for pressing the lift arm 42 upward in the non-inserted state, and a pressing spring 44 for pressing the lift arm 42 downward.

The lift arm 42 is in contact with the lower surface of the protruding portion 22a protruding from both sides of the head arm 22, and is mounted so as to be rotatable vertically about both ends of the pressing spring 44 as axes. Below the lift arm 42, a lifter 43 that slides in the A and B directions by the sliding operation of the slider 13 is provided. Therefore, when the disk cartridge is not inserted, the lifter 43 presses the lift arm 42 upward, whereby the head arm 22 rotates upward and the upper magnetic head 17 is retracted above the disk holder 12. .

Further, the disk cartridge is inserted into the disk holder 12, the slider 13 slides in the direction A, and the lifter 43 is separated from the lift arm 42. Thus, the lift arm 42 is lowered to the mounting position in a state where the holding force of the lifter 43 is removed. For this reason, the magnetic disk stored in the disk cartridge is sandwiched between the lower magnetic head 16 and the upper magnetic head 17 for magnetic recording or reproduction while the head arm 22 rotates downward.

Further, the lift arm 42 is supported by a support portion 12h standing upright on the top plate 12a of the disk holder 12 by passing both ends of the pressing spring 44 through the cut-and-raised portion 42a of the lift arm 42. Since the support portion 12h is formed in a direction extending in the E and F directions, the lift arm 42 is mounted so as to be rotatable in a vertical direction orthogonal to the carriage movement direction (A and B directions).

A cover 45 is provided above the slider 13 so as to cover an upper portion of the frame 14. The cover 45 is screwed to the frame 14 on both sides to prevent the slider 13 from floating upward and further guide the slider 13 in the front-rear direction. As shown in FIGS. 1, 2, 3, and 7, a cam portion 46 for engaging the above-mentioned latch lever 38 is provided on the flat plate 13 a of the slider 13. Cam part 4
Reference numeral 6 denotes an arc-shaped portion 47 with 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 passes through the 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.

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 52 rising above
3 guides the sliding operation. FIG. 8 shows the disk holder 12.
FIG. 9 is a perspective view showing a state in which a latch lever 38 is attached to the top plate 12a of FIG. FIG. 9 is a perspective view showing a state in which the slider 13 is mounted above the latch lever 38.

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 space of the magnetic disk device 11 can be reduced.

Next, a description will be given of a disk mounting operation of the magnetic disk device 11 configured as described above. FIG.
FIG. 3 is a diagram showing a positional relationship between the disk holder 12 and the slider 13 in a state where the disk cartridge is ejected. As shown in FIGS. 10A to 10D, the engaging pin 12e of the disk holder 12 is fitted in the inclined groove 13d of the slider 13, and the sliding operation of the slider 13 causes the engaging pin 12e to slide. 12e is driven 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.

Accordingly, 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 view showing the positional relationship between the disk holder 12 and the slider 13 with the disk cartridge 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. By this ejecting operation, the disc cartridge is ejected from the disc holder 12 after the shutter is closed.

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.

Next, the mechanism related to the disk cartridge mounting operation will be described in detail. As shown in FIG. 12A, the cam portion 46 formed on the flat plate 13a of the slider 13 includes an arc portion 47, a slope portion 60 following the arc portion 47, and a relief portion 48 following the slope portion 60. And
The slope 60 forms an important part of the present invention. FIG. 12 (B)
As shown in (1), the slider 13 has a horizontal groove 61 extending in the direction A from above the inclined groove 13d. This horizontal groove 61 forms an important part of the present invention. The length of the slope portion 60 in the sliding direction (A, B directions) of the slider 13 is L1.
The length (length in the A and B directions) of the horizontal groove 61 is L2.
The length L1 and the length L2 have a relationship of L1 <L2.

Due to the presence of the horizontal groove 61, the position Q10 at which the slider 13 has moved most in the B direction is smaller than the position Q1 at which the slider has moved most in the B direction in the absence of the horizontal groove 61, in the B direction. (See FIG. 14B). The arc-shaped portion 47
Is when the slider 13 is located at the position Q10.
This is an arc of a circle centered on the rotation center of the latch lever 38, and the disk cartridge is moved into the final insertion position S1 while the sliding contact portion 38d moves clockwise in the process of pushing and inserting the disk cartridge. Slidably in contact with the position S2 immediately before the position S2. The arc-shaped portion 47 is related to the sliding portion 38d of the latch lever 38,
The latch lever 38 is allowed to rotate, and even when the latch lever 38 is rotated, the slider 13 is prevented from sliding in the direction A, and acts to maintain the position at the position Q10.

The slope 60 is inclined at an angle θ (several degrees) counterclockwise with respect to the A and B directions. This slope 60
Has the following two effects. Slider 13 is spring 5
The start of sliding in the direction A is permitted by 1, 52. When the slider 13 slides in the direction A, the sliding contact portion 38d is pushed in the direction C. A clockwise turning force is applied to the latch lever 38 by the movement of the slider 13 by the springs 51 and 52 and the action of the slope portion 60. This turning force causes the disk cartridge to push the latch lever 38 to near the final insertion position S1 while extending the spring 39, and the spring 3
In a state in which the load on the pushing of the disk cartridge is increased due to the large extension of 9, the load on the pushing is reduced.

Since the length L1 and the length L2 are in a relationship of L1 <L2, the sliding of the slider 13 while the slope portion 60 is in contact with the sliding contact portion 38d is performed with respect to the engagement pin 12e. The horizontal groove 61 slides, the inclined groove 13d and the engaging pin 1
2e, the disc holder 12 is still kept at the cartridge insertion / ejection position. Escape part 4
Reference numeral 8 extends in the sliding direction of the slider 13 (A and B directions). The relief portion 48 acts to allow the slider 13 to slide in the direction A. Also, the escape portion 48
Does not rotate the latch lever 38 at all.

Next, the disc cartridge mounting operation will be described.
This will be described in detail focusing on an operation force for pushing the disk cartridge into the disk holder 12. FIG. 13 (A
1) to (D1) show changes in the relationship between the latch lever 38 and the slider 13 with the progress of the disk cartridge insertion operation, and FIGS. 13 (A2) to (D2) respectively show FIGS.
The change of the relationship between the slider 13 and the holder 12 when shown in (A1) to (D1) is shown. FIGS. 14A to 14C
Indicates the state of change in the rotational position of the latch lever 38, the position of the slider 13, and the force for pushing the disk cartridge with the progress of the disk cartridge insertion operation. FIG.
In FIGS. 16A to 16C, broken lines indicate the lines in FIGS. 16A to 16C and are shown for easy comparison.

Before the disk cartridge is inserted, the latch lever 38 is rotated counterclockwise as shown in FIG. 13A, and the sliding contact portion 38d is located at the position P10. As shown in FIG. 13 (A2), the slider 13
It is located at the position Q10 slid in the direction. When the disk cartridge is inserted into the holder 12, the disk cartridge pushes the latch lever 38 from the middle and the spring 3
9 is inserted while being stretched and rotated clockwise. The operating force applied to the fingertip for pushing the disk cartridge increases almost proportionally as shown in FIG.

When the disk cartridge is in the final insertion position S1
Is pushed to the position S2 immediately before reaching
8d reaches the end of the arc-shaped portion 47, and subsequently, FIG.
As shown in 1), the sliding contact portion 38d reaches the position P11 and faces the inclined surface portion 60, and the slider 13 starts sliding in the direction A by the springs 51 and 52 as shown in FIG. 13 (B2). I do.

When the slider 13 slides by a distance L1, FIG.
3 (C1) and the state of FIG. 13 (C2). Sliding part 38
d reaches the position P12 and reaches the boundary between the slope portion 60 and the escape portion 48. Even when the slider 13 slides by the distance L1,
The engagement pin 12e is still located in the portion of the horizontal groove 61. In the process of changing from the state of FIG. 13 (B1) and FIG. 13 (B2) to the state of FIG. 13 (C1) and FIG. 13 (C2),
The sliding portion 38d is pushed in the direction C, and the clockwise turning force TR is applied to the latch lever 38. This rotating power is supplied to the latch lever 38 by the disc cartridge to be pushed.
Acts to assist the power of turning. Therefore, the operating force applied to the fingertip for pushing the disk cartridge is reduced by the amount of the rotating power TR, and the operating force applied to the fingertip for pushing the disk cartridge is increased substantially in proportion to the pushing of the disk cartridge. As shown by reference numeral 70 in FIG. 14 (C), almost no increase occurs, and a feeling as if the disk cartridge is pulled in remains at the fingertip.

When the disk cartridge is in the final insertion position S1
, The escape portion 48 moves along the sliding contact portion 38d,
The slider 13 is slid in the direction A. As shown in FIG. 13 (D1), the sliding contact portion 38d reaches the position P13 with respect to the cam portion 46. Further, as shown in FIG. 13 (D2),
The inclined groove 13d is fitted to the engagement pin 12e, the holder 12 is lowered, and the disc cartridge is mounted.

The load applied to the fingertip for pushing the disk cartridge has increased almost proportionally with the pushing of the disk cartridge, but hardly increases in the final stage. And a good operation feeling is obtained. When the disc cartridge is ejected, the inclined portion 60 does not rotate the latch lever 38 in the counterclockwise direction at once, but the latch lever 38 first pivots a little, and then pivots at once. It works as if to. Therefore, the ejection of the disc cartridge can be performed quietly in the initial stage.

[0054]

As described above, according to the first aspect of the present invention,
A cam portion is provided on a portion of the sliding member facing the rotation range of the latch lever, and a sliding contact portion is provided at an intermediate portion of the latch lever so as to slidably contact the cam portion. An arc-shaped portion that slides until the recording medium reaches a position immediately before reaching the final insertion position while the sliding portion moves in the rotation direction in the process of being inserted, and an end of the arc-shaped portion. The sliding member slides from the position immediately before the recording medium to the final insertion position until the recording medium reaches the final insertion position, and the sliding portion presses the sliding contact portion; A relief portion extending in the sliding direction of the moving member, and when the sliding contact portion reaches the end of the arc-shaped portion, the sliding member is moved in the one direction by a spring force of a spring. Start, and the slope portion pushes the sliding contact portion to rotate the latch lever in the insertion direction. Since that is configured to generate the load on the finger tip to push the recording medium, which has been increasing substantially proportionally with the depression of the recording medium,
In the final stage, it hardly increases, and a feeling as if the recording medium is pulled in remains at the fingertip, and a good operation feeling can be obtained.

According to the second aspect of the present invention, the sliding member extends horizontally from the upper end of the inclined groove and has a length longer than the length of the inclined portion in the sliding direction of the sliding member. Have
In the movement of the sliding member while the slope portion is in contact with the sliding portion, the horizontal groove is engaged with the engaging pin of the holder, and the holder is kept at the recording medium insertion / ejection position. Since the fingertip is configured so that the recording medium can be pulled, a feeling as if the recording medium is pulled in remains more reliably at the fingertip, and a good operation feeling can be more reliably obtained. When the recording medium is a cartridge, the cartridge can be lowered after the cartridge is completely inserted, so that the recording medium can be inserted without contacting other members such as a positioning pin of the recording medium and an insertion opening of the front bezel. Can perform actions

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a schematic configuration of a magnetic disk device as one embodiment of a recording medium recording / reproducing apparatus according to the present invention.

FIG. 2 is an exploded perspective view showing a cover, a slider, a holder, and a frame in an enlarged manner.

FIG. 3 is a diagram showing a state where a slider and a holder are combined.

FIG. 4 is a diagram showing a configuration of a frame.

FIG. 5 is an exploded perspective view for explaining a configuration of a latch mechanism.

FIG. 6 is a diagram for explaining a shape of a latch lever.

FIG. 7 is a diagram for explaining a shape of a slider.

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

FIG. 9 is a perspective view showing a state where a slider is mounted above a latch lever.

FIG. 10 is a diagram showing a positional relationship between a disk holder and a slider in a state where the disk cartridge is ejected.

FIG. 11 is a diagram showing a positional relationship between a disk holder and a slider in a state where a disk cartridge is mounted.

FIG. 12 is an enlarged view showing a mechanism related to a disk cartridge mounting operation.

FIG. 13 is a diagram showing a change in the relationship between the latch lever and the slider with the progress of the disk cartridge insertion operation, and also showing a change in the relationship between the slider and the holder in a corresponding manner.

FIG. 14 is a diagram showing a state in which a rotation position of a latch lever, a position of a slider, and a change in a disc cartridge pushing operation force are accompanied by progress of a disc cartridge insertion operation.

FIG. 15 is a diagram showing a part of a recording medium recording / reproducing device devised by the present inventors.

FIG. 16 is a diagram showing a change in the rotational position of the latch lever, the position of the slider, and the change in the disc cartridge pushing operation force with the progress of the disc cartridge insertion operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Disk apparatus 12 Holder 13 Slider 14 Frame 14i pin 15 Turntable 16, 17 Magnetic head 18 Head carriage 24 Lead screw 25 Drive motor 36 Latch mechanism 38 Latch lever 46 Cam part 47 Arc-shaped part 48 Escape part 60 Slope 61 Horizontal groove

Claims (2)

[Claims] A recording medium insertion / ejection position at which a recording medium is inserted into the frame; and a recording medium mounting position at which the recording medium is in contact with the lower magnetic head and the upper magnetic head. A holder, attached to the holder, a latch lever that is pushed by the recording medium during the process of inserting the recording medium into the holder and rotates in the insertion direction, and is supported by the frame; The holder has an inclined groove to be fitted to the engagement pin, and the latch is released by the rotation operation of the latch lever, slides in one direction, and moves the holder to the recording medium mounting position. A recording medium recording / reproducing apparatus having a sliding member for returning the holder to the recording medium insertion / ejection position by sliding to the recording medium, and a spring for urging the sliding member to move in the one direction. In the arrangement, a cam portion is provided on a portion of the sliding member facing the rotation range of the latch lever, and a sliding contact portion that slides on the cam portion is provided on an intermediate portion of the latch lever. An arc-shaped portion that slides in contact with the recording medium until it reaches a position immediately before reaching a final insertion position while the sliding contact portion moves in the rotating direction in a process of pushing and inserting the recording medium; A sloping portion that continues to the end of the recording medium and presses the sliding contact portion by sliding of the sliding member until the recording medium reaches the final insertion position from the position immediately before the recording medium; And a relief portion extending in the sliding direction of the sliding member. When the sliding contact portion reaches the end of the arc-shaped portion, the sliding member is actuated by the spring force of the spring. Starts moving in the one direction, and the slope portion presses the sliding contact portion to push the latch lever. A recording medium recording / reproducing apparatus, characterized in that the recording medium recording / reproducing apparatus is configured to generate a rotational force for rotating the recording medium in an insertion direction. 2. The sliding member extends horizontally from an upper end of the inclined groove, and has a horizontal groove having a length longer than a length of the inclined member in a sliding direction of the sliding member. In the movement of the member while the slope portion is in contact with the sliding portion, the horizontal groove is engaged with the engagement pin of the holder, and the holder is kept at the recording medium insertion / ejection position. 2. The recording medium recording / reproducing apparatus according to claim 1, wherein: