JP2991040B2 - Lid mechanism for recording medium storage slot - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover mechanism for a recording medium container insertion opening.

[0002]

2. Description of the Related Art For example, in a recording / reproducing apparatus such as a magnetic disk device, when a magnetic disk cartridge containing a flexible magnetic disk as a recording medium storage body is inserted into a disk insertion slot provided in a front bezel. When the magnetic disk cartridge is inserted, the flexible magnetic disk is mounted on the turntable to enable magnetic recording and reproduction.

As a conventional lid mechanism for a magnetic disk cartridge insertion slot, there are a type in which a lid as shown in FIG. 13 is incorporated in a front bezel and a type in which a lid is incorporated in a frame side as shown in FIG.

[0004] In FIG. 13, a lid 1 has shafts 2 at both ends and a center portion, and each shaft 2 is attached to a mounting hole 3 a of a front bezel 3.
And is rotatably supported. Therefore, when a magnetic disk cartridge (not shown) is inserted into the disk insertion slot 3b of the front bezel 3, the lid 1 is pressed against the front end of the magnetic disk cartridge while supporting the three shafts 2, and the magnetic disk device Rotate into the disc insertion slot 3
Open b.

In the structure shown in FIG. 14, the lid 1 is rotatably supported by fitting the shafts 2 projecting from both ends into the mounting holes 4a of the frame 4. Then, put the lid 1 on the frame 4
Then, the hooks 5 protruding from both sides of the front bezel 3 are fitted into the mounting holes 4b of the frame 4. In this case, the lid 1 is supported by the shafts 2 at both ends, and opens and closes the disc insertion slot 3b of the front bezel 3.

[0006]

However, as the magnetic disk drive becomes thinner, the space above the disk insertion slot 3b of the front bezel 3 becomes smaller, so that it is provided at the center of the lid 1 as shown in FIG. There is no space for providing the mounting hole 3a for supporting the shaft 2. Further, in the thinned state, the installation place of the pivot point of the lid 1 is also limited, and in consideration of the state where the lid 1 is opened, it is necessary to reduce the thickness of the lid 1, and even more, the upper part of the front bezel 3. Since the dimensions are reduced, it is difficult to provide the mounting hole 3a at the center of the front bezel 3.

For this reason, the configuration shown in FIG. 14 tends to be gradually adopted as a cover mechanism for the magnetic disk cartridge insertion slot. In this configuration, the lid 1 is
Is rotatably supported, so that the strength of the central portion of the lid 1 is weak. In particular, in the state where the device is thin as described above, the lid 1 is also thin, so the strength of the lid 1 itself is reduced. ing.

Therefore, when the magnetic disk cartridge 6 (indicated by a dashed line) is inserted into the disk insertion slot 3b of the front bezel 3, as shown in FIG. When the cover 1 is inserted obliquely toward the rotation center of the cover 1, the central portion of the cover 1 is deformed so as to be warped, so that the shafts 2 at both ends may come off from the mounting holes 4 a of the frame 4. .

Therefore, the applicant of the present invention has previously described the Japanese Utility Model Application
Applied for No. 2090, the name of the device "Lid mechanism for recording medium insertion opening"

FIG. 16 shows the lid mechanism 10.

Reference numeral 11 denotes a stopper, which is formed by bending the edge of the shield cover 12 of the magnetic disk device on the front bezel side downward.

The stopper 11 functions to receive a portion near the upper end of the back surface of the lid 1 when the lid 1 is going to bend as shown in FIG.

As a result, the warp of the lid 1 is restricted,
It rotates smoothly and is pushed open. However, for example, when the magnetic disk cartridge 6 is inserted in a diagonally downward direction as shown by the arrow C, the lid 1 bends diagonally downward as shown by the arrow C, and in some cases, the lid 1 FIG.
As shown by the two-dot chain line in FIG.

When this occurs, the lid 1 is bent so as to protrude inside the magnetic disk drive, and the lid 1 is bent.
Will not open and close smoothly.

Accordingly, an object of the present invention is to provide a cover mechanism for a recording medium insertion opening which solves the above-mentioned problems.

[0016]

According to a first aspect of the present invention, there is provided a cover body having a substantially rectangular plate-like shape, and portions at both ends in the longitudinal direction of the cover body are turned to a recording medium recording / reproducing apparatus body. A cover mechanism for a recording medium storage unit insertion port, which is movably supported and normally closes an insertion opening into which the recording medium storage unit is inserted, and includes a lid that is pushed open by the inserted recording medium storage unit. A receiving portion that faces a rear surface of the lid main body, and that receives a part of the rear surface of the lid main body when the lid main body is bent in a direction inside the recording medium recording / reproducing apparatus main body; A hook portion for locking a part of the lid body when the lid body is bent downward.

According to a second aspect of the present invention, there is provided a cover body having a substantially rectangular plate shape, and portions at both ends in a longitudinal direction of the cover body are rotatably supported by the recording medium recording / reproducing apparatus body. Yes,
Normally, in a cover mechanism of a recording medium container insertion opening provided with a cover that closes an insertion hole into which the recording medium container is inserted and is pushed open by the inserted recording medium container, the lid is the cover. On the back surface of the main body, has a configuration having a concave portion,
Further, the recording medium recording / reproducing device main body is opposed to the back surface of the lid main body, and when the lid main body is bent in the direction of the inside of the recording medium recording / reproducing device main body, the back surface of the lid main body is formed. A receiving portion for receiving a part of the cover body, a configuration facing the concave portion of the lid main body, and having a hook portion for locking the concave portion when the lid main body is bent downward. It was done.

According to a third aspect of the present invention, the receiving portion and the hook portion include a tongue portion formed at an edge portion of a shield cover attached so as to cover an upper surface of the recording medium recording / reproducing apparatus main body. It is what it was.

[0019]

According to the first aspect of the present invention, the receiving portion acts to restrict the cover main body from bending more than a predetermined amount in the direction inside the recording / reproducing apparatus.

The hook portion acts to limit the downward bending of the lid main body beyond a certain level.

In the second aspect of the present invention, the receiving portion and the hook portion operate similarly to the receiving portion and the hook portion of the first aspect of the present invention. The concave portion according to the second aspect of the present invention acts to secure the engagement by the hook portion.

According to the third aspect of the present invention, the tongue portion of the shield cover forms the receiving portion and the hook portion, and the shield cover is attached so that the receiving portion and the hook portion face the back surface of the lid body. I do.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS For convenience of explanation, a magnetic disk drive to which a lid mechanism according to an embodiment of the present invention is applied will be described first.

As shown in FIG. 2, the magnetic disk drive 10
Has a thin structure, and comprises a magnetic disk drive main body 11 and a lid mechanism 12 according to an embodiment of the present invention.

The magnetic disk drive main body 11 is mounted on a frame 13 made of aluminum die-cast, a magnetic disk cartridge mounting mechanism and a magnetic head mechanism (both not shown) on the frame 13, and an upper surface of the frame 13. It has a shield cover 14 for covering the head mechanism and the like, a magnetic disk cartridge insertion slot 15, and a front bezel 16 and the like attached to the frame 13.

In assembling the magnetic disk drive main body 11, the shield cover 14 is attached last.

As shown in FIGS. 3 and 1, the lid mechanism 12 of the magnetic disk cartridge insertion slot includes a lid 20, a torsion coil spring 21, a part of the shield cover 14,
It consists of a part of the front bezel 16.

Hereinafter, the lid 20, the shield cover 14, and the front bezel 16 will be sequentially described.

First, the lid 20 will be described.

As shown in FIG. 3, the lid 20 is a molded product made of a synthetic resin, and has a substantially rectangular plate-shaped lid main body 22 and two longitudinal ends of the lid main body 22 at the both ends, and in the height direction. (Z ₁ ,
Z ₂ direction) on, and a shaft 23, 24 parts of the upper side.

The lid body 22 has a notch 25, a recess 26, 2
7 and inclined surface portions 28 and 29.

The notch 25 is formed at the center of the upper edge 22a of the lid body 22.

The recesses 26 and 27 are formed on the back surface 22b of the lid body 22.
Of these, it is formed on the left and right sides of the notch 25.

As shown in FIG. 1, the concave portion 26 has an edge 26a and a side surface 26b on the upper side.

The upper side surface 26b is substantially perpendicular to the back surface 22b of the lid body 22. Side 26b
However, as described later, this is to ensure that the hook piece is hooked (see FIG. 11).

The recess 27 has the same shape as the recess 26.

As will be described later, the concave portion 26 is
When it is opened, it has a size and a depth that can relatively accommodate a tongue piece 44 described later.

Similarly, the concave portion 26 has a size and a depth capable of relatively accommodating a tongue piece 45 described later when the lid 20 is opened.

The inclined surfaces 28 and 29 are respectively provided with concave portions 26 and 2
7 is formed from the surface 22c of the lid body 22 to the upper edge 22a.

As shown in FIG. 5, the angle α of the inclined surface 28 with respect to the horizontal plane is smaller than the angle β of the surface 22d when the inclined surface 28 is not formed.

The inclined surface portion 29 is formed in the same manner as the above-described inclined surface portion 28.

A notch 30 is formed in the upper edge 22a of the lid body 22 on the left side of the inclined surface 28.

A notch 31 is formed in the upper edge 22a of the lid body 22 on the right side of the inclined surface 29.

Next, the shield cover 14 will be described.

As shown in FIG. 3, the shield cover 14
Is formed by pressing an aluminum plate having a thickness of about 0.3 mm, and has a central tongue 41 at an edge 40 on the side of the front bezel 16, a central tongue 41, a left tongue 42 at a portion closer to the left side, Right side tongue 43, center tongue 41 at right side
A left intermediate tongue 44 is provided at a portion between the left and right tongues 42 and a right intermediate tongue 45 is provided at a portion between the center tongue 41 and the right tongue 43.

The tongues 42 and 43 are V-shaped when viewed from the front, and are reinforced.

As shown in FIG. 1, the left intermediate tongue portion 44 has left and right receiving pieces 44 _-1 and 44 as receiving portions.
_-2 and a central hook piece _44-3 as a hook portion. The receiving pieces 44 _-1 and 44 _{-2 form} an angle γ with respect to the horizontal plane.
(About 60 degrees). The hook piece _44-3 is inclined at an angle θ (about 30 degrees) with respect to the horizontal plane.

The tip 44 _-3a hook pieces 44 _-3, receiving pieces 44 _-1, 44 _-2 tip 44 _-1a, from 44 _-2a, the X ₂ direction, located in a position offset by the dimension a I have.

The right intermediate tongue 45 is also connected to the left intermediate tongue 4.
4 and the receiving piece 45 _-1, 45_-2And foot
Piece 45_-3Having.

Here, the angle θ of the hook pieces 44 _-3 , 45 _-3
Is set to an angle (about 30 degrees) closer to the horizontal than the inclination of the receiving pieces _44-1 , _44-2 , _45-1 , 45-2, and the hook pieces 44
_-3, 45 _-3 tip 44 _-3a, 45 _-3a the receiving piece 44 _-1,
44 _-2, 45 _-1, 45 _-2 tip 44 _-1a, 44 were as out per X ₂ direction from _-2a is a side 26b hook piece 44 of the recesses 26, 27 as will be described later _-3 , 45 _-3 (see FIG. 11).

The tongue 44, the recess 27 and the inclined surface 28,
The tongue 45, the concave portion 28 and the inclined surface 28 are positioned so as to face each other in a state where the magnetic disk device 10 is assembled.

Next, the front bezel 16 will be described.

As shown in FIG. 3, the front bezel 16
Is a molded product of synthetic resin, has a substantially rectangular frame shape, has an upper beam portion 50 and a lower beam portion 51, and has a magnetic disk cartridge insertion opening 15 between the beams 50 and 51. Having.

On the lower surface at the center of the upper beam portion 50, a convex step portion 5 is provided.
2 are formed.

Further, a slit 53 is formed at the location of the protruding step 52.

Further, square holes 54 and 55 are formed in the upper beam portion 50 at positions near the left and right sides on the back surface.

The upper beam portion 50 has a convex step portion 56 which is convex downward at the position of the square hole 54.

The upper beam portion 50 also has a convex step (not shown) that is convex downward at the position of the square hole 55.

Next, the state of attachment of the lid 20, the shield cover 14, and the front bezel 16 and their mutual relationship will be described.

The lid 20, as shown in FIG.
4 is fitted and attached to holes 60 and 61 near the front side of the frame 13, and the shafts 23 and 24 are centered in FIG.
It is rotatable in the directions of arrows A ₁ and A _{2 in the} middle.

In FIG. 5, FIG. 6, and FIG. 7, point 0 is the center of rotation of the lid 20. The lid 20 is by the torsion coil spring 21 is biased in the A ₂ direction. A front bezel 16 is fitted and attached to the front side of the frame 13.

The shield cover 14 is attached to the frame 13 by fitting the tongue 41 and the like to the front bezel 16.

As shown in FIGS. 6 and 4, the tongue 41 is fitted in the slit 53.

As shown in FIGS. 7 and 4, the tongue 42 is fitted in the square hole 54, and the tongue 43 is fitted in the square hole 55.

Thus, the edge 4 of the shield cover 14
The zero side portion and the upper beam portion 50 of the front bezel 16 are mechanically reinforced.

The lid 20 is urged by a spring 21, the leading end of the lid 20 is pressed against the back surface of the lower beam 51, and is in a vertical rotation position, that is, in a closed state, and the magnetic disk cartridge insertion slot 15 is closed. ing.

[Relationship between Lid 20 and Step 52] As shown in FIG. 6, the step 52 is fitted into the notch 25.

The protruding step 52 of the upper beam 50 is reinforced by the tongue 41 of the shield cover 14.

[Relationship between Lid 20 and Step 56] As shown in FIG. 7, the step 56 is fitted in the notch 30.

The protruding step 56 of the upper beam 50 is reinforced by the tongue 42 of the shield cover 14.

In the notch 31 near the axis 24 of the lid 20,
As in the above, the protruding step (not shown) of the upper beam portion 50 is fitted.

[Relationship Between Lid 20 and Left Intermediate Tongue 44] As shown in FIG. 5, the left intermediate tongue 44 is a portion of the back surface 22b of the lid body 22 where the recess 26 is formed. , The upper edge 22a.

The receiving piece _44-2 ( _44-1 ) and the edge 2 of the concave portion 26
6a are separated by a dimension b (about 1 mm).

[0074] distal end of the hook piece 44 _-3 dimension c (about 0.3 mm) than the recess 26 has exited.

The relationship between the lid 20 and the right intermediate tongue 45 is the same as described above.

Next, the operation when the lid 20 is pushed and opened by the magnetic disk cartridge 6 as the recording medium storage to be inserted will be described.

In FIG. 6, when the force F ₁ is applied to the lid 20. For example, the user places the magnetic disk cartridge 6 in a horizontal direction in a portion of the insertion slot 15 near the lower beam 51. When inserted, that is, when the magnetic disk cartridge 6
Corresponds to the case where was successfully inserted.

The lid 20 is supported by the shafts 23, 2 against the spring 21.
4 mainly, in the arrow A ₂ direction is smoothly rotated, pushed open.

The lid 20 is rotated to the maximum horizontal position shown in FIG.

[0080] in the recess 26, by which the entering relatively receiving piece 44 _-1, 44 _-2 and hooks 44 _-3, the lid 2
0 is turned to the above position without any trouble.

In FIG. 6, when the force F ₂ is applied to the lid 20. For example, the case where the user inserts the magnetic disk cartridge 6 into a portion of the insertion slot 15 near the upper beam 50 is applicable. .

As shown in FIG. 15, the lid main body 22 is pushed by the portion near the upper edge 22a, and as shown in FIG.
1 of the inner side is bent in the X ₁ direction to be convex.

However, as shown in FIG. 9, when the lid main body 22 is slightly bent, the edge 26a of the concave portion 26 in the back surface 22b of the lid main body 22 contacts the receiving pieces _44-1 , _44-2 . Touch Similarly, the edge portion of the concave portion 27 contacts the receiving pieces 45 _-1 and 45 _-2 . Thus, the lid body 22 is restricted from flexing more X ₁ direction.

Therefore, the shafts 23 and 24 do not come out of the holes 60 and 61, and the lid 20 does not fall off.

Further, the lid body 22 does not break and break.

[0086] Further, when the lid 20 is rotated in A ₁ direction, receiving pieces 44 _-1, 44 _-2, 45 _-1, 45 _-2, and the hooks 44 _-3, 45 _-3, the recess 26 , 27 relatively. Thus, the lid 20 is smoothly be rotated to a position where the horizontal A ₁ direction. Thus, the lid 20
In a state in which deflection is limited of the lid body 22 is smoothly rotated in the A ₁ direction.

In FIG. 6, a case where a force F ₃ is applied to the lid 20 corresponds to, for example, a case where the user inserts the magnetic disk cartridge 6 obliquely upward into the insertion slot 15.

[0088] The lid body 22, with bent to be convex to the Z ₁ direction (upward direction), bent to form a projection into the X ₁ direction.

The bending in the Z ₁ direction is limited when the bottom surface 25 a of the notch 25 is in contact with the lower surface of the step 52, as shown in FIG.

[0090] Deflection of the X ₁ direction, as shown in FIG. 10 (B), the edge 2 of the recess 26 of the back surface 22b of the cover body 22
The portion 6a is restricted in a state of contact with the receiving pieces _44-1 , _44-2 .

[0091] Thus, the lid 20 is smoothly rotated in the A ₁ direction.

In FIG. 6, when the force F ₄ is applied to the lid 20, for example, the case where the user inserts the magnetic disk cartridge 6 obliquely downward into the insertion slot 15 corresponds to the case.

[0093] The lid body 22, with bent to be convex to the Z ₂ direction (downward direction), bent to form a projection into the X ₁ direction.

[0094] As shown in FIG. 10, Z for the _two directions, the cover body 122 where flexed slightly, the side surface 26b of the recess 26, the hook piece 44 hits the _-3, and the edge of the recess 27 hook elements 45 _{- In the case of 3} , the lid main body 22 is locked by the hook pieces 44 _-3 and 45 _-3 (in some cases, the receiving piece _{44-1 and the} like), and further bending is restricted.

[0095] For even X ₁ direction, the cover body 22, hooks 44 _-3, is received by the 45 _-3, is limited to more deflection.

As a result, first, the lid main body 22 goes under the tongues 44 and 45 as shown by the arrow B in FIG. 45 can be prevented from entering the back side.

[0097] The second lid 20 is smoothly rotated in the A ₁ direction.

Therefore, under the situation where the lid body 22 has a thin and easily bent shape, the lid 20 can be smoothly pushed open regardless of how the magnetic disk cartridge is inserted.

Next, as shown in FIG. 12A, when the lid main body 22 enters the back side of the tongues 44, 45 for some reason, the lid main body 45 is moved by itself.
The operation of exiting from the back side of 45 will be described.

In the state shown in FIG. 12A, the inclined portion 28 is in contact with the hook piece _44-3 .

A linear force is generated in the lid body 22 by the elastic force of the lid body 22 itself. That is, the lid body 2
The point of the inclined surface portion 28 of the 2, X ₂ direction force is acting.

[0102] Here, the inclination of the inclined surface portion 28 is gently, and the inclination of the hooks 44 _-3 is also smooth.

For this reason, the inclined surface portion 28 is
Slipped underside of _-3, the lid body 22, via the state of FIG. 12 (B), the on their own in the state of FIG. 12 (C), the tongue portion 44
From the back side of the, it becomes a normal state.

The present invention is not limited to the above embodiment, but can be applied to a magneto-optical disk cartridge or a lid portion of an insertion slot into which a magnetic tape cassette is inserted.

Further, the tongues 44 and 45 may be provided on the upper beam 50 of the front bezel.

[0106]

As described above, the first aspect of the present invention has the following features. When the lid is pushed by the recording medium container to be inserted, the lid main body does not excessively bend, so that the lid can be reliably prevented from dropping or being damaged, The lid can be smoothly rotated and pushed open.

The lid main body does not bend excessively downward, and it is possible to reliably prevent the occurrence of an accident in which the lid main body goes under the receiving portion and enters the back side of the receiving portion.

As described above, the reliability of the operation in which the lid is pushed and opened by the recording medium storage body can be improved.

According to the second aspect of the present invention, the locking by the hook portion can be performed more reliably, so that the occurrence of an accident in which the lid body enters the back side of the receiving portion can be more reliably prevented. I can do it.

According to the third aspect of the present invention, the cover mechanism can be completed by attaching the shield cover last, so that the assemblability of the cover mechanism can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing a main part of a lid mechanism of a magnetic disk cartridge insertion slot according to an embodiment of the present invention.

FIG. 2 is a perspective view of a magnetic disk drive to which the lid mechanism of FIG. 1 is applied.

FIG. 3 is an exploded perspective view showing a lid mechanism in FIG. 2;

FIG. 4 is a plan view of a lid mechanism in FIG. 2;

FIG. 5 is an enlarged sectional view taken along line VV in FIG.

FIG. 6 is an enlarged sectional view taken along line VI-VI in FIG.

FIG. 7 is an enlarged sectional view taken along line VII-VII in FIG.

FIG. 8 is a view showing a state where a lid is pushed and expanded in FIG. 5;

9 is a diagram for explaining an operation for limiting the deflection of X ₁ direction of the lid body.

10 is a diagram for explaining an operation for limiting the deflection of the flexure and X ₁ direction in the Z ₁ direction of the lid body.

11 is a diagram for explaining an operation for limiting the deflection of the Z ₂ direction of the lid body.

FIG. 12 is a view for explaining an operation in which a lid main body that has entered the back side of the receiving portion comes out of the back side of the receiving portion by itself.

FIG. 13 is a view showing an example of a conventional lid mechanism.

FIG. 14 is a diagram showing another example of a conventional lid mechanism.

FIG. 15 is a view showing that the lid flexes in the lid mechanism of FIG. 14;

FIG. 16 is a diagram showing a lid mechanism previously filed by the present applicant.

[Explanation of symbols]

Reference Signs List 6 magnetic disk cartridge 10 magnetic disk device 11 magnetic disk device main body 12 lid mechanism 13 frame 14 shield cover 15 magnetic disk cartridge insertion slot 16 front bezel 20 lid 21 torsion coil spring 22 lid main body 22a upper edge 22b rear surface 22c front surface 23, 24 axis 25 Notch 26, 27 Recess 26a Edge 26b Side 28, 29 Inclined surface 30, 31 Notch 40 Edge 41 Central tongue 42 Left tongue 43 Right tongue 44 Left middle tongue 45 Right middle tongue _44-1 , 44 _-2, 45 _-1, 45 _-2 receiving piece 44 _-3, 45 _-3 hook piece 50 upper beam portion 51 lower beam portion 52 convex stepped portion 53 slit 55 square hole 56 convex stepped portion 60, 61 hole

Claims (3)

(57) [Claims] An apparatus has a substantially rectangular plate-shaped lid body, and portions at both ends in the longitudinal direction of the lid body are rotatably supported by a recording medium recording / reproducing apparatus main body. In a lid mechanism of a recording medium container insertion port, which has a lid that is closed by the recording medium container to be inserted and is opened by the inserted recording medium container, the recording medium container is opposed to the back surface of the lid body. A receiving portion for receiving a part of the back surface of the lid main body when the lid main body is bent in the direction of the inside of the recording medium recording / reproducing apparatus main body; and wherein the lid main body is bent downward. And a hook portion for locking a part of the lid body. 2. A device according to claim 1, further comprising a substantially rectangular plate-shaped lid main body, and both ends in the longitudinal direction of the lid main body rotatably supported by the recording medium recording / reproducing apparatus main body. In a lid mechanism of a recording medium container insertion port, which has a lid that closes an insertion port into which a recording medium container is inserted and is pushed open by the inserted recording medium container, the lid is a back surface of the lid body. The recording medium recording / reproducing apparatus main body has a concave portion, and the recording medium recording / reproducing apparatus main body is opposed to the back surface of the lid main body, and the lid main body is bent in a direction inside the recording medium recording / reproducing apparatus main body. A receiving portion that receives a part of the back surface of the lid main body when facing, and faces the concave portion of the lid main body, and locks the concave portion when the lid main body is bent downward. A record having a configuration having a hook portion A lid mechanism for the media storage slot. 3. The apparatus according to claim 1, wherein the receiving portion and the hook portion are configured by a tongue formed at an edge portion of a shield cover attached so as to cover an upper surface of the recording medium recording / reproducing apparatus main body. 3. A cover mechanism for a recording medium storage body insertion opening according to claim 1, wherein: