JPH1166795A - Disk housing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently mount a fall-off preventing member on a main body of case with a small vibration energy by providing a protruding part for welding to be used for the ultrasonic welding of the fall-off preventing member to the main body of case and forming the surface of at least the place, on which the tip part of the protruding part for welding is abutted, of the main body of case or the fall-off preventing member to the rugged shape. SOLUTION: In the disk housing device, a back plate 44 is mounted on the main body of case by performing the ultrasonic welding in the manner of abutting the welding surface of the rugged main body of case on the protruding part 48 for welding of the back plate 44, the tip side of which is notched. By this arrangement, the back plate 44 is efficiently mounted on the main body of case with the small vibration energy, then the inconvenience, such as failures of the crack, etc., are generated on the back plate 44 or the main body of case due to the vibration at the time of welding, is evaded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk storage device for rotatably storing a disk-shaped recording medium, and more particularly to a disk storage device capable of replacing a disk to be stored.

[0002]

2. Description of the Related Art Conventionally, as disclosed in JP-A-6-68641, a disk-shaped recording medium (hereinafter, referred to as a disk) such as a magnetic disk or an optical disk is not directly mounted on a drive device. There has been proposed a disk storage device capable of performing reproduction while stored in a case.

This disk storage device includes a case main body provided with a disk storage portion for rotatably storing a disk, and a cover member for closing the disk storage portion. In addition, this disk storage device is mounted on the drive device with the disk stored therein, and the stored disk is played back.Therefore, the turntable of the spindle motor of the drive device is mounted inside the case main body on the back side of the case main body. A window for allowing the head to enter and a window for allowing the head device to enter the case body and move in the radial direction of the disk are formed in communication with each other. And
In this disk storage device, the window is opened and closed by a shutter member movably attached to the case body.

Further, in this disk storage device, a drop-off preventing member for movably supporting one end of the shutter member to prevent the shutter member from dropping is attached to the back side of the case body by ultrasonic welding or the like. Have been.

[0005]

Incidentally, in order to stably attach the falling-off preventing member to the case body, it is desirable that the falling-off preventing member and the case body be welded as widely as possible.

However, when the contact area between the falling-off preventing member and the case main body is large, it is necessary to apply a large vibration energy to them when performing ultrasonic welding. And
This vibration energy may cause a defect such as a crack in the falling-off prevention member or the case body.

Accordingly, the present invention provides a disk storage device that can efficiently transmit small vibration energy to a welded portion, stably attach a fall prevention member to a case body, and suppress generation of cracks and the like. The purpose is to do.

[0008]

According to the present invention, there is provided a disk storage device comprising: a case body having an opening formed on a back side;
A shutter member movably attached to the case body and opening and closing an opening of the case body; and a case body such that one end side is separated from a back surface of the case body along a moving direction of the shutter member via a predetermined gap. A detachment prevention member attached to the rear surface side and preventing the shutter member from falling off by inserting one end side of the shutter member into the gap.

In this disk storage device, welding protrusions are provided at a plurality of positions of the drop-off preventing member for abutting the tip of the drop-off preventing member on the case body and ultrasonically welding the drop-off preventing member to the case body. ing. This welding projection is
At least one of the tips is notched.

Further, in this disk storage device, at least the surface of a portion of the case body where the tip of the welding protrusion provided on the falling-off preventing member abuts has an uneven shape.

In this disk storage device, the tips of the welding projections provided at a plurality of locations of the falling-off prevention member are cut out, and the surface of the location where the tip of the welding projection of the case body comes into contact is formed. Because of the uneven shape, the contact area between the fall prevention member and the case body is reduced. Therefore, in this disk storage device, the vibration energy is efficiently transmitted to the welding portion between the falling-off preventing member and the case main body, and even if the welding site is provided in a wide range, the vibration preventing member and the case main body can be connected with small vibration energy. Welding can be performed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A disk storage device according to the present invention will be described below with reference to the drawings.

This disk storage device 1 is a DVD-RA
FIG. 1 is a storage device for rotatably storing a rewritable disk-shaped recording medium such as M (hereinafter, referred to as a disk), mounted on a drive device, and performing recording and reproduction on the stored disk. As shown in the perspective view,
A case body 2 for storing a disc, and the case body 2
And a cover member 3 attached so as to be openable and closable.

The case body 2 is formed by molding a synthetic resin or the like into a substantially rectangular flat plate shape. At the center of the main surface 2a of the case body 2, a disk storage recess 4 for storing a disk is formed in a circular shape corresponding to the outer shape of the disk.

The case body 2 has a front end (hereinafter referred to as a front end 2b) in the direction of insertion of the disk storage device 1 into the drive device as indicated by an arrow A in FIG. ), A window 5 is provided so as to penetrate in the thickness direction of the case main body 2.

The window portion 5 is located at the center of the disc accommodating recess 4 and has a circular window portion 5a formed in a circular shape having a size corresponding to a turntable of a spindle motor provided in the drive device. From this circular window 5a to the front end 2
b, a rectangular window portion 5b formed in a rectangle having a size corresponding to the moving amount of the head device provided in the drive device.
Are integrally formed. When the disk storage device 1 is mounted on the drive device, the tip of the spindle motor enters the case body 2 through the circular window 5a, and the head device moves through the rectangular window 5b. Enter within 2.

As shown in FIG. 2, the case body 2 extends from the rear surface 2c to the front end 2b, and
A shutter member 6 for opening and closing the shutter is mounted. The shutter member 6 is made of, for example, a metal plate,
It is formed in a substantially rectangular plate shape large enough to close the window 5. The shutter member 6 is provided with a holding piece 6a that is bent in a substantially U-shaped cross section along one of the long sides in the short side direction.

A locking piece 6b extends from the other end of the shutter member 6 in the long side direction via a step. The locking piece 6b has a shape in which both ends are cut out.

By the way, a slit 7 is formed on a side surface of the case body 2 on the side of the front end 2b in a direction perpendicular to the insertion direction of the disk storage device 1. A slider 8 is provided at the front end 2b of the case main body 2 so as to fit into the slit 7 and move along the slit 7. Then, the shutter member 6 is attached to the slider 8.
Holding piece 6a is engaged. As a result, the shutter member 6 moves the disk storage device 1
Is mounted so as to be slidable in a direction orthogonal to the mounting direction.

The shutter member 6 is arranged at a position for closing the window 5 when the slider 8 is normally urged by a spring mechanism (not shown). When the disk storage device 1 is mounted on the drive device and the slider 8 is moved along the slit 7 against the urging force of the spring mechanism, the shutter member 6 moves with the movement of the slider 8. A direction perpendicular to the mounting direction of the disk storage device 1, that is, an arrow B in FIG.
And the window 5 is opened.

When the disk storage device 1 is not mounted on the drive device, the shutter member 6
As a result, the window 5 is closed, thereby protecting the disk housed in the disk housing recess 4.

Further, the shutter member 6 is prevented from falling off by the locking piece 6b being locked to the back plate 9 attached to the back side of the case body 2. The details of the back plate 9 will be described later.

On one side surface 2d side of the case body 2,
As shown in FIG. 3, a concave portion 10 opening at the side surface portion 2d is formed, and a write protector 11 is accommodated in the concave portion 10. This write protector 1
1 is a member for preventing the recorded information from being erased by accidentally overwriting the recorded information,
It is accommodated in the concave portion 10 so as to be movable between a recording prohibited position for preventing overwriting and a recordable position for allowing overwriting.

The write protector 11 is made of, for example, synthetic resin or the like. First and second pieces 11b, 1
1c.

The first piece 11b abuts on or does not abut a detection unit (not shown) provided in the drive device to determine whether or not the write protector 11 is located at the above-mentioned recording prohibition position. A detection projection 12 for detection is provided. Also, the second piece 11c has
A positioning projection 13 is provided for positioning the write protector 11 at the above-described recording prohibition position or the recordable position.

On the other hand, a concave portion 10 provided on one side surface 2d of the case body 2 is opened on the one side surface 2d, and has a first opening 10a surrounded by a side wall.
have. Then, when the write protector 11 is accommodated in the concave portion 10, the operation section 11a of the write protector 11 faces the outside from the first opening 10a.

At the edge of the opening of the first opening 10a,
Guide surfaces 14 are provided, each of which is inclined toward the inside of the concave portion 10, and guides the insertion of the write protector 11 into the concave portion 10.

The concave portion 10 has a second opening 10b which opens on the back surface 2c side of the case body 2. Then, when the write protector 11 is accommodated in the concave portion 10, the detection projection 12 provided on the first piece 11 b of the write protector 11 faces the outside from the second opening 10 b. It has been done. The detection unit provided in the drive device contacts or does not contact the detection protrusion 12 through the second opening 10b when the disk storage device 1 is inserted into the drive device. It is detected whether or not the recording prevention member 11 is located at the recording prohibition position.

Although not shown, a wall of the concave portion 10 on the side of the main surface 2a of the case main body 2 is provided with a second portion of the write protector 11 when the write protector 11 moves to the above-mentioned recording prohibition position. A first positioning groove that is engaged with the positioning projection 13 provided on the piece 11c; and a second positioning that is engaged with the positioning projection 13 when the write protector 11 moves to the recordable position. Grooves are formed.

Incidentally, the write protector 11 is accommodated in the concave portion 10 as follows. That is, as shown in FIG. 5A, the write protector 11 is directed from the side where the first and second pieces 11b and 11c are provided into the concave portion 10 via the first opening 10a. Inserted. At this time, as shown in FIG. 5B, the first piece 11b is guided by the guide surface 14 provided at the opening edge of the first opening 10a, and approaches the second piece 11c. Elastically in the direction of Then, the write protector 11
When the detection projection 12 provided on the first piece 11c passes through the first opening 10a, the first piece 11c elastically returns as shown in FIG. Projection 12
Is locked to the peripheral wall surrounding the second opening 10b, thereby preventing falling off.

The disk storage device 1 is provided with the write protector 11 as described above, thereby preventing the information recorded on the disk from being accidentally overwritten and erasing the recorded information. .

The case body 2 is provided with a cover member 3 for opening and closing the disc storage recess 4.
Is mounted so as to be rotatable with respect to.

The cover member 3 is made of, for example, a transparent plastic so that the disk stored in the disk storage recess 4 can be viewed from the outside. The cover member 3 closes the disk storage recess 4 as shown in FIG. It has a cover body 3a of a sufficient size and an extension piece 3b extending from one end of the cover body 3a. And the cover body 3
a pair of mounting portions 15,
16 are provided.

The cover body 3a has one end formed in a circular shape corresponding to the disc accommodating recess 4, and the other end formed in a rectangular shape corresponding to the outer shape of the case body 2. At a substantially central portion of the cover body 3a, a circular hole 17 having a size corresponding to the circular window 5a formed in the case body 2 is provided. The disc pressing member 18 is loosely inserted into the circular hole 17.

The disk pressing member 18 is for holding the center of the disk housed in the disk housing recess 4, and is formed of, for example, a synthetic resin in a disk shape, and has a spindle of a drive device therein. A metal plate for magnet chucking by a motor is embedded. The disc pressing member 18 is rotatably and swingably supported by support claws 19 provided at the edge of the circular hole 17.

The extension piece 3b extending from one end of the cover main body 3a is bent in a direction in which the front end is orthogonal to the cover main body 3a and toward the back surface 2c of the case main body 2, and has an L-shaped section. It has been. And this extension piece 3b
The cover member 3 is overlapped on the case body 2 at the left and right end portions of the disk drive.
It is called the rear end 2e. ) Side notch 20
a, a pair of engagement pieces 21a, 21b inserted into the
Is provided. Through holes are respectively formed in the engagement pieces 21a, 21b, and when the cover member 3 closes the disc storage recess 4, a tip portion of a slide member described later is inserted into the through holes. Thereby, the opening operation of the cover member 3 is regulated.

A pair of mounting portions 15 and 16 provided at both left and right end portions on the other end side of the cover body 3a are attached to the cover body 3a.
a pair of protruding pieces 15a, 15 protruding outward from
b, 16a, 16b and these projecting pieces 15a, 15b,
There are provided shaft portions 15c and 16c for connecting 16a and 16b, respectively. The cover member 3 is attached to the case body 2 via the pair of attachment portions 15 and 16, and is rotatable with respect to the case body 2 around the pair of shaft portions 15c and 16c as support shafts. .

On the other hand, as shown in FIG. 7, the projecting pieces 15a, 15 of the pair of mounting portions 15, 16 of the cover member 3 are located on the right and left ends of the front end 2b.
b, 16a, 16b, respectively, a pair of grooves 2
2a, 22b and 23a, 23b are provided, respectively. Between the pair of groove portions 22a and 22b and between the pair of groove portions 23a and 23b, plate spring members 24a and 24b capable of being elastically displaced from the main surface portion 2a side of the case body 2 to the back surface 2c side are integrated with the main surface portion 2a. Is formed.
Projections (not shown) are provided at the lower ends of the leaf spring members 24a and 24b, respectively. Further, protruding portions 25a, 25b are provided to protrude toward the leaf spring members 24a, 24b at a position facing the distal ends of the leaf spring members 24a, 24b with a predetermined gap therebetween.

When attaching the cover member 3 to the case body 2, first, a pair of attachment portions 15, 1 of the cover member 3 are attached.
6 are inserted into the pair of grooves 22a, 22b and 23a, 23b of the case body 2 respectively, and the shafts 15c of the mounting portions 15, 16 are inserted into the pair of grooves 15a, 15b, 16a, 16b.
16c is brought into contact with the leaf spring members 24a and 24b. Then, the leaf spring members 24a and 24b are attached to the back surface 2 of the case body 2.
While elastically displacing the shaft parts 15c and 16c toward the c-side, the shaft parts 15c and 16c are connected to the distal ends of the leaf spring members 24a and 24b and the protrusions 25a and 25b.
It is pushed into the back surface 2b side of the case body 2 from the gap between them. When the shaft portions 15c, 16c are pushed in by a predetermined amount, the leaf spring members 24a, 24b elastically return, and this leaf spring member 24
a, a projection provided at the lower end of 24b, and a projection 25a,
The shaft portions 15c and 16c of the cover member 3 are sandwiched between 25b. Thereby, the cover member 3 is fixed to the shaft portions 15c and 1c.
6c is attached to the case main body 2 so as to be rotatable about the rotation axis.

A pair of slide members 26 and 27 for restricting the opening operation of the cover member 3 are attached to the left and right ends on the rear end 2e side of the case body 2. When the pair of engaging pieces 21a, 21b of the cover member 3 are inserted into the pair of cutouts 20a, 20b, the slide members 26, 27 are inserted into through holes provided in the engaging pieces 21a, 21b. The first for engaging and restricting the opening operation of the cover member 3
Is disengaged from the through hole and projects outwardly from the left and right side surfaces of the case body 2 to move to the second position where the cover member 3 can be opened. 2 attached. The slide member 26 attached to the left end on the rear end 2e side of the case body 2 and the slide member 27 attached to the right end have the same configuration. An example is described.

The slide member 26 is made of, for example, synthetic resin or the like. As shown in the plan view of FIG. 8 and the side view of FIG. And a pressing operation portion 29 for moving the slide member 26 from the second position to the first position, and a push operation portion 29 provided at the other end of the base portion 28 in the long side direction. 1, when the engagement piece 21
a, and an insertion protrusion 30 to be inserted into a through hole provided in 21b.

At a substantially central portion of the base 28, an oval long hole 31 extending in the long side direction of the base 28 is provided so as to penetrate in the thickness direction of the base 28. The base 28 is elastically displaceable in the short side direction by providing the long holes 31. Further, the base 28 is adjacent to the insertion protrusion 30 side of the long hole 31, from the side surface of the base 28.
A pin locking hole 32 is provided for locking the tip of the movement regulating pin inserted parallel to the main surface of the pin. In addition,
Details of the movement restriction pin will be described later.

The pin locking hole 32 is formed with a first hole 32a.
And the second hole 32b are formed in a continuous shape via the connection hole 32c. Since the width of the connection hole 32c is smaller than the width of the first and second holes 32a and 32b, the pin locking hole 32 is formed between the first hole 32a and the second hole 32a. A pair of pin locking projections 33a and 33b protrude between the holes 32b.

An operation projection 34 for moving the slide member 26 from the first position to the second position is provided on one long side of the long side of the base 28. It protrudes over the direction. Characters and arrows indicating the opening and closing directions of the slide member 26 are engraved on both left and right sides of the operation projection 34. Characters for instructing the opening and closing directions of the slide member 26 are engraved along the thickness direction of the base 28 with the operation projection 34 downward. Therefore, the slide member 26 can be used even if the upper surface and the lower surface are inverted, and the slide member 26 is attached to the right end as the slide member 26 attached to the left end on the rear end 2e side of the case body 2. It can also be used as the slide member 27.

A pin insertion hole 35 through which the movement restricting pin is inserted is provided on one side surface of the base 28 in the long side direction. The pin insertion hole 35 has a hole diameter substantially equal to the diameter of the movement control pin, and is bored in parallel with the upper and lower surfaces of the base 28 so that the distal end communicates with the pin locking hole 32 described above. Have been. At the position where the pin insertion hole 35 is provided on one side surface of the base 28 in the long side direction, the movement restricting pin is inserted into the pin insertion hole 35 over the periphery of the opening end of the pin insertion hole 35. Is provided.

On the other hand, a positioning groove formed in the case body 2 when the slide member 26 moves to the first position or the second position on the other side surface in the long side direction of the base portion 28. A positioning projection 37 for projecting the slide member 26 by engaging with the projection is provided.

As described above, the slide member 26 is moved from the second position to the first end of the base 28 in the long side direction.
The push operation unit 29 for moving the operation to the position is provided. The thickness of the pressing operation portion 29 is
Is provided from one side surface in the short side direction of the base portion 28 to the other side surface in the long side direction of the base portion 28, and has a substantially L-shaped cross section. The pressing operation portion 29 is configured such that a portion protruding from the upper surface and the lower surface of the base 28 and an end of a portion provided on the other side surface in the long side direction of the base 28 are orthogonal to the moving direction of the slide member 26. When the slide member 26 is operated to move to the first position, the slide member 26 comes into contact with a groove provided on the side wall of the case main body 2 to suppress further movement of the slide member 26.

The pressing operation portion 29 has a surface subjected to anti-slip processing so that the pressing operation of the slide member 26 can be easily performed.

As described above, when the slide member 26 moves to the first position, the engagement pieces 21a and 21b of the extension piece 3b of the cover member 3 are attached to the other end of the base 28 in the long side direction.
Is provided with an insertion protruding portion 30 to be inserted into the through hole provided in the through hole. The distal end of the insertion projection 30 is provided with an inclined surface 30a that is inclined in a direction of gradually decreasing the diameter toward the distal end, so that it can be easily inserted into through holes provided in the engagement pieces 21a and 21b. It has been made possible to do.

On the other hand, as shown in FIG. 10, sliding members 26,
Housing portions 38 and 39 for movably housing 27 are provided, respectively.

The housings 38 and 39 are provided with openings 4 that open on the left side wall or the right side wall of the case body 2, respectively.
0,41. The openings 40, 41
Is cut out into a shape corresponding to the pressing operation portion 29 of the slide member 26 (27), and the slide member 2 (27) is cut out.
When 6 (27) moves to the first position, the pressing operation unit 29 is housed.

The receiving portions 38 and 39 are formed in a shape corresponding to the base 28 of the slide member 26 (27) and the projection 30 for insertion in a direction perpendicular to the direction of insertion of the disk storage device 1 into the drive device. And the back surface 2 of the case body 2
It is open on the c side. And the accommodation parts 38 and 39
By disposing a back plate described later on the back surface 2c side of the case body 2, the opening on the back surface 2c side is closed.

The housings 38, 39 are opened at the side wall of the rear end 2e of the case body, and
When the slide member 26 (2) is accommodated,
Operation openings 42 and 43 for moving the slide member with the operation projection 34 of 7) facing the outside are provided respectively. The side walls around the operation openings 42 and 43 are inclined surfaces that are inclined toward the opening edges of the operation openings 42 and 43 so that the operation of the operation protrusions 34 can be easily performed. ing.

The sliding members 26 are provided on the wall surfaces of the housing portions 38, 39 facing the operation openings 42, 43.
When (27) moves to the first position, it engages with the positioning protrusion 37 of the slide member 26 (27), and a groove (not shown) for positioning the slide member 26 (27). When the member 26 (27) moves to the second position, it engages with the positioning projection 37 of the slide member 26 (27), and a groove (not shown) for positioning the slide member 26 (27) is formed. Each is formed.

The sliding member 26 (27) is
8 and 39, the sliding member 26 (27) is inserted from the opening 40 or 41 opening on the left side or the right side of the case body 2 with the insertion projection 34 facing forward.
8. Insert into 39. At this time, the slide member 26 (2
Since the base 28 of 7) is provided with the long hole 31 as described above, the base 28 is elastically displaced, and its diameter is reduced in a direction perpendicular to the insertion direction. Then, when the operation protrusion 34 protrudes outward from the operation openings 42 and 43 through the region surrounded by the walls of the housing portions 38 and 39, the base 28
Is elastically restored, and the operation projection 34 is moved to the operation opening 42,
43. Thereby, the slide member 26
(27) is prevented from falling off.

As described above, the disk storage device 1 attaches the slide member 26 (27) to the case body 2 and engages the slide member 26 (27) with the cover member 3 to open the cover member 3. , The opening operation of the cover member 3 is reliably restricted, and the cover member 3 is opened by an impact such as dropping, and the disc stored in the disc storage recess 4 is damaged. Is avoided.

In the disk storage device 1, when the cover member 3 is opened, the slide member 26 (27) is in the second position, that is, the position where the slide member 26 (27) projects outward from both left and right side surfaces of the case body 2. When the cover member 3 is opened, the entire width of the disk storage device 1 is made larger than the width of the disk insertion slot of the drive device, and the cover device 3 is erroneously inserted into the drive device with the cover member 3 opened. Insertion is prevented.

When the slide member 26 (27) is moved to the second position, the entire width of the disk storage device 1 is larger than the length of the disk storage device 1 in the direction of insertion into the drive device. Is desirable. The drive device is usually designed so that the width of the disk insertion slot is smaller than the length of the disk storage device in the insertion direction in order to prevent the disk storage device from being inserted from the wrong direction. Therefore, in the disk storage device 1, the entire width of the disk storage device 1 when the slide member 26 (27) moves to the second position is larger than the length of the disk storage device 1 in the direction of insertion into the drive device. By doing so, it is possible to more reliably prevent accidental insertion into the drive device with the cover member 3 opened.

The above is the description of the slide member 26 (27).
Are attached to the left and right ends on the rear end portion 2e side of the case body 2 and are engaged with the engagement pieces 21a and 21b of the cover member 3, thereby restricting the opening operation of the cover member 2. However, the disk storage device according to the present invention is not limited to this example. For example, the slide member 26 (27) is attached to the cover member 2 so that the slide member 26 (27) engages with the case body 2. By doing so, the opening operation of the cover member 2 may be restricted.

After the slide member 26 (27) is attached to the case body 2, the slide member 26 (27)
Considering the operability of (27), the risk of falling off, and the like, it is desirable that excessive displacement of the base 28 be suppressed. Therefore, the slide member 26 attached to the case body 2
(27) The pair of shafts provided on the back plate are inserted into the long holes 31 respectively.

The back plate 44 is used for the case body 2
The shutter member 6 is attached to the rear surface 2c side to prevent the shutter member 6 from dropping off and to close the openings on the case body rear surface 2c side of the housing portions 38 and 39 for housing the slide members 26 (27). As shown in FIG.
It is formed by molding a synthetic resin or the like into a substantially rectangular plate shape. And
At one end of the back plate 44 in the short side direction,
When the back plate 44 is attached to the case main body 2, the concave portion 45 into which the locking piece 6b of the shutter member 6 is inserted is formed along the long side to have a length corresponding to the amount of movement of the shutter member 6. ing. That is, the shutter member 6
When the back plate 44 is attached to the back surface 2c side of the case main body 2, the locking piece 6b
By being inserted into the gap formed between the concave portion 45 and the surface of the back plate 44, dropping is prevented.

When the back plate 44 is attached to the case body 2, the sliding member 26 is attached to both ends of the other end of the back plate 44 in the short side direction.
(27) The slide member 26 (2
Shafts 46 and 47 for preventing the excessive displacement of 7) are provided, respectively.

Further, on the main surface of the back plate 44, the back plate 44 is
Is provided with a welding projection 48 for ultrasonic welding. As shown in FIG.
The back plate 44 is configured as a substantially annular projecting portion slightly projecting from the main surface. The welding protruding portion 48 has a substantially triangular cross-sectional shape with the apex as the apex, and is in line contact with the case body 2. Further, at least a part of the welding protruding portion 48 on the side of the distal end portion is cut out and divided. FIG. 12 shows FIG.
1 is a sectional view taken along line AA in FIG.

On the other hand, on the back surface 2c side of the case body 2, a plurality of welding surfaces 60 are provided as shown in FIG. The welding surface 60 is formed at a predetermined location on the back surface 2c side of the case body 2, that is, at a location corresponding to the location where the welding projection 48 of the back plate 44 is provided. Thereby, the surface is made uneven. As shown in FIG. 14, the welding surface 60 has a protrusion height of about 0.2 m, for example.
The surface may have an uneven shape by providing a plurality of ridges 61 having a substantially triangular cross section with an angle of m and a vertex angle of about 60 degrees in parallel with an interval of about 0.5 mm. Note that the shape and dimensions of the ridge 61 described above are merely examples, and it is a matter of course that the present invention is not limited to this example.

The back plate 44 includes a welding projection 48.
Is brought into contact with the welding surface 60 of the case main body 2 to perform ultrasonic welding, thereby being attached to the back side of the case main body 2.

The ultrasonic welding is performed in a state in which the welding projection 48 of the back plate 44 and the welding surface 60 of the case body 2 are in contact with each other, and a vertical frequency of about 20 to 40 kHz and an amplitude of about 50 to 60 μm is applied thereto. By applying vibration, the contact portion is melted by frictional heat and joined. The smaller the area of the contact portion is, the smaller the vibration energy can be welded and the more efficient the vibration energy can be transmitted to the joint portion. .

In the disk storage device 1 according to the present invention, the welding protruding portion 4 of the back plate 44 having a notched end portion is provided.
8 and the welding surface 60 of the case body 2 having an uneven surface.
The back plate 44 is attached to the case main body 2 by performing ultrasonic welding by bringing the back plate 44 or the case into contact with the back plate 44 or the case by applying excessive vibration energy. The inconvenience that a defect such as a crack occurs in the main body 2 is avoided.

Further, in the disk storage device 1, the welding projections 48 are scattered over a wide area of the back plate 44, and a welding surface 60 is provided on the case main body 2 correspondingly.
The back plate 44 can be stably attached to the case main body 2 by bringing the two into contact with each other and performing ultrasonic welding. At this time, it is desirable that the distal ends of the shafts 46 and 47 inserted into the elongated holes 31 of the slide member 26 (27) are also welded to the case body 2. In this manner, the distal end portions of the shaft portions 46 and 47 are welded to the case main body 2 so that the mounting state of the back plate 44 is further strengthened.

The locking piece 6b of the shutter member 6, which is inserted into the gap between the concave portion 45 provided at one end in the short side direction of the back plate 44 and the surface of the case body 2, As described above, both ends in the moving direction are cut out. Therefore, as shown in FIG. 15, when the shutter member 6 moves to the end in the movement direction, the back plate 44 and the case main body 2 are welded at the portion where the cutout portion is located. Also, the movement of the shutter member 6 is not hindered. Therefore, in the disk storage device 1 according to the present invention, the back plate 4
4 is provided with a welding projection 48 at a position where the cutout portion of the locking piece 6b is located when the shutter member 6 moves to the end in the movement direction. It is desirable that a welding surface 60 be provided at a portion corresponding to the shape portion 48 so that both are brought into contact with each other to perform ultrasonic welding.

When the shutter member 6 moves to the end in the moving direction, the locking piece 6b
By welding the portion where the cutout portion is located, the mounting state of the back plate 44 is further strengthened, the falling off of the shutter member 6 is reliably prevented, and the moving operation of the shutter member 6 is stabilized. .

In the above description, the back plate 44 is provided with the welding protruding portion 48, the case body 2 is provided with a welding surface, and the two are brought into contact with each other to perform ultrasonic welding. However, the disk storage device according to the present invention has a case in which the case main body 2 is provided with a welding protruding portion, the back plate 44 is provided with a welding surface 60, and the two are brought into contact with each other. Sound wave welding may be performed.

Further, the case body 2 corresponding to the position where the welding projection 48 of the back plate 44 is provided is described above.
Has been described as an example in which the welding surface 60 is used as the welding surface 60.
The entire surface on the side or the surface over a wide range may be formed into an uneven shape to serve as a welding surface.

As shown in FIG. 12, the case body 2 has a pair of recesses located at the left and right ends of the rear end 2e, into which the tips of the shafts 46 and 47 of the back plate 44 are inserted. 49a and 49b are perforated. That is,
The shafts 46 and 47 of the back plate 44 are inserted into the pair of recesses 49a and 49b, respectively, at the ends through the long holes 31 provided in the base 28 of the slide member 26 (27).

The recesses 49a and 49b are used for positioning when the back plate 44 is mounted on the case body 2, and the one recess 49a has the outer dimensions of the one shaft portion 46 of the back plate 44. They have approximately the same diameter. The other concave portion 49b is
In order to absorb the relative displacement of the shaft portions 46 and 47 due to an error in molding 4, the back plate 44 is formed to have a slightly larger diameter than the outer dimension of the other shaft portion 47. Particularly, the other concave portion 49b has a shape that is long in a direction perpendicular to the direction of insertion into the drive device,
The variation in the lateral direction of the shaft portions 46 and 47 of the back plate 44 is absorbed.

As shown in FIG. 10, a slide member 26 (27) is provided on the side wall of the rear end 2e of the case body 2.
There are provided restriction pin insertion holes 50 and 51 through which movement restriction pins for restricting the movement of the cover member 3 and opening the cover member 3 are inserted. Side walls around the restriction pin insertion holes 50 and 51 are inclined surfaces inclined toward the opening edges of the restriction pin insertion holes 50 and 51 so that the movement restriction pins can be easily inserted. Is desirable.

As shown in FIGS. 16 and 17, the movement restricting pins 52 inserted into the restricting pin insertion holes 50 and 51 respectively include a cylindrical base 52a and a substantially cone provided on the tip end side of the base 52a. And a locking portion 52b in the shape of a circle. A step is formed between the base 52a and the locking part 52b, and the step is locked by the pair of pin locking projections 33a, 33b provided on the slide member 26 (27), and the movement regulating pin is formed. A locking claw 53 for restricting the extraction of the pin 52 is provided. In addition, on the base end side in the insertion direction of the base 52a,
A recess 54 is provided for facilitating insertion of the movement control pin 52.

The movement restricting pin 52 is provided with a split groove 55 extending in the moving direction of the movement restricting pin 52 from the locking portion 52b to the distal end of the base 52a.
As shown in FIG. 17, for example, the split groove 55 is formed in a substantially Y-shaped cross section so as to divide the tip end side of the movement regulating pin 52 in the movement direction into three equal parts. The movement restricting pin 52 can be elastically displaced by the provision of the split groove 55 in such a manner as to reduce the diameter toward the center of the cylinder.

Although the movement restricting pin 52 composed of the cylindrical base 52a and the substantially conical locking portion 52b is described here as an example, the movement restricting pin 52 used in the disk storage device 1 of the present invention is described. Is not limited to this example. For example, as shown in FIG.
a and a locking portion 56b provided on the distal end side of the prismatic base 56a. Again,
A split groove 57 is formed in the movement restricting pin 56 along the moving direction so that it can be elastically displaced in a direction perpendicular to the moving direction.

The movement restricting pin used in the disk storage device 1 of the present invention has a concave shape along the moving direction so that a space is formed inside the movement restricting pin from the distal end to the base of the locking portion. A portion may be formed to be elastically displaceable in a direction perpendicular to the moving direction.

The movement restricting pin 52 constructed as described above
In the initial state, as shown in FIG.
The restricting pin insertion holes 50 and 51 provided on the side wall of the rear end portion 2e of the case body 2 are inserted through the pin insertion holes 35 provided on the slide member 26 (27), respectively, and the locking portions 52b are pinned. It is housed in the first hole 32 a of the locking hole 32. At this time, since the slide member 26 (27) is connected to the case main body 2 via the movement restriction pin 52, the movement of the slide member 26 (27) is restricted.

When the movement regulating pin 52 is pushed from the case body 2 side to the slide member 26 (27) side, the locking portion 52b is contracted by the action of the split groove 55 provided along the movement direction. Elastically displaced in the radial direction,
9 (B), the connecting hole 32c of the pin locking hole 32
And is housed in the second hole 32b. The movement restricting pin 52 is completely accommodated in the slide member 26 (27) by moving as described above. This allows
The slide member 26 (27) is disengaged from the case body 2 and can be moved.

The movement restricting pin 52 is connected to the case main body 2.
Is pushed into the slide member 26 (27) side from the side, and the locking portion 52b becomes the second hole portion 32b of the pin locking hole 32.
The locking portion 52b is elastically restored and expanded in diameter, and the locking claw 53 provided at the lower end of the locking portion 52b is engaged with the first hole portion 32a of the pin locking hole 32 and the second locking portion 52b. The locking projections 33a and 33b provided between the two holes 32b lock the locking members 33a and 33b, and cannot return to the original position.

The above is the description of the rear end 2e of the case body 2.
The example in which the restriction pin insertion holes 50 and 51 are provided in the side wall of the slide member 26 and the slide member 26 (27) is inserted from the rear end 2e side of the case body 2 has been described. The insertion position is not limited to this example. For example, as shown in FIG. 20, regulating pin insertion holes 50, 51 penetrating in the thickness direction from the back surface 2 c side of the case main body 2 are provided, and the movement regulating pin 52 is provided. You may make it penetrate from the back surface 2c side of the case main body 2 to the slide member 26 (27). Thus, by providing the restriction pin insertion holes 50 and 51 on the back surface 2c side of the case main body 2 and inserting the movement restriction pins 52 from the back surface 2c side of the case main body 2, the disk storage device 1 is mounted on the drive device. In this case, it is possible to easily detect whether or not the movement restricting pin 52 is pushed.

In the above, the movement restricting pin 52 is inserted between the case body 2 and the slide member 26 (27),
The example in which the opening of the cover member is regulated by regulating the movement of the slide member 26 (27) has been described. However, as shown in FIG. A wall portion (58) facing the extension piece (3b) of the member (3) is provided, and a movement regulating pin (52) extends between the extension piece (3b) of the cover member (3) and the wall portion (58) of the case body (2).
May be inserted to directly regulate the opening of the cover member. In this case, the movement restricting pin 5 is provided between the main surface 2a of the case body 2 and the opposing surface of the cover body 3a of the cover member 3.
The locking projections 59a and 59b for locking the locking portions 52 are provided, and when the movement control pin 52 is moved, the locking portions 5
2b is desirably locked to the locking projections 59a, 59b.

Next, the operation when the cover member 3 of the disk storage device 1 configured as described above is opened will be described.

In the initial state, the disk device 1 has the sliding members 26, 2 as shown in FIG.
7 is pushed into the housings 38 and 39 of the case body 2. At this time, the cover member 3 is closed with respect to the case main body 2 so as to form the disc storage recess 4, and the pair of engaging pieces 21 a and 21 b are provided with the notches 20 a provided in the case main body 2. , 20b.

The insertion projections 30 of the slide members 26 and 27 are inserted into through holes formed in the engagement pieces 21a and 21b of the cover member 3 to suppress the opening operation of the cover member 3.

At this time, the movement control pin 52 is moved from the control pin insertion holes 50 and 51 provided in the side wall of the rear end 2 e of the case body 2 to the pin insertion holes 35 provided in the slide members 26 and 27. And the first hole 32a to restrict the movement of the slide members 26 and 27.
Therefore, in the initial state of the disk storage device 1, the state in which the cover member 3 closes the disk storage concave portion 4 is maintained, and the cover member 3 is opened by an impact such as dropping, and the disk storage concave portion 4 is opened. Inconveniences, such as damaging the disk stored in the inside, are avoided.

Then, this disk storage device 1 is
As shown in FIG. 2 (B), the movement restricting pin 52 is pushed into the slide members 26 and 27, and the slide members 26 and 27 are moved.
Is moved to the side of the case body 2, so that the cover member 3 can be opened to the case body 2.

That is, the movement restricting pin 52 is pushed into the slide members 26 and 27 to operate the slide member 2.
When the slide members 26 and 27 are completely housed in the case members 6 and 27, the slide members 26 and 27 are disengaged from the case body 2 and can be moved. Then, the slide members 26 and 27
Is moved to the side of the case body 2, the insertion protrusions 30 of the slide members 26 and 27 are moved to the engagement pieces 2 of the cover member 3.
It is pulled out from the through holes provided in 1a and 21b, and the cover member 3 can be opened.

As described above, once the movement restricting pin 52 is pushed into the slide members 26 and 27,
It will not be possible to return to the original position. The disk storage device 1 is thus provided with the movement restricting pin 5 once pushed in.
By making it impossible to return to the original position, it is possible to determine whether or not the cover member 3 has been opened.

As described above, the disk storage device 1 erroneously overwrites information recorded on the rewritable disk-shaped recording medium stored in the disk storage recess 4 by including the write protector 11. Erasing recorded information is prevented.

Further, in this disk storage measure 1, a slide member 26 (27) is attached to the case body 2, and the slide member 26 (27) is engaged with the cover member 3,
Since the opening operation of the cover member 3 is regulated, the opening operation of the cover member 3 is reliably restricted, and the cover member 3 is opened by an impact such as dropping, and is accommodated in the disc accommodating recess 4. Inconveniences, such as damaging the burned disc, can be avoided.

The disk storage device 1 has a welding protruding portion 48 of the back plate 44 whose front end is cut out.
By contacting the welding surface 60 of the case body 2 having the uneven shape with the welding surface 60 and performing ultrasonic welding, the back plate 4
4 is attached to the case body 2, the back plate 44 can be efficiently attached to the case body 2 with small vibration energy, and the back plate 44 and the case body 2 are defective such as cracks due to vibration during welding. Can be avoided.

Further, in the disk storage device 1, the slide member 26 (27) is moved to the position where the engagement with the cover member 3 is released by pushing the movement restricting pin 52 into the slide member 26 (27). Since the movement restricting pin 52 once pressed is not allowed to return to the original position, it is possible to detect whether the cover member 3 is opened.

[0096]

According to the disk storage device of the present invention, at least one drop-out preventing member or at least one
The notched tip is provided with a welding protrusion for abutting the case body or the drop-off prevention member and ultrasonically welding the drop-out prevention member to the case body, and at least welding of the case body or the drop-off prevention member. Since the surface where the tip of the protruding part comes into contact has an uneven surface, the fall prevention member can be efficiently attached to the case body with small vibration energy, and the fall prevention member is It is possible to avoid such a problem that a defect such as a crack is generated in the case body.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state where a cover member of a disk storage device of the present invention is opened.

FIG. 2 is a perspective view showing a back surface side of the disk storage device in a state where a slide member is disassembled.

FIG. 3 is an enlarged perspective view of a main part showing a rear surface side of the disk storage device in an enlarged manner.

FIG. 4 is a side view of the write protector.

5A and 5B are diagrams illustrating an operation of attaching the write protector to a case body, wherein FIG. 5A is a cross-sectional view showing a state before the write protector is attached to the case body, and FIG. FIG. 7C is a cross-sectional view showing a state where the write protector is attached to the case body, and FIG.

FIG. 6 is a perspective view of a cover member.

FIG. 7 is a plan view of the case main body.

FIG. 8 is a plan view of a slide member.

FIG. 9 is a side view of the slide member.

FIG. 10 is a side view of the case main body.

FIG. 11 is a perspective view of a back plate.

FIG. 12 is a sectional view of a welding projection of the back plate.

FIG. 13 is a rear view of the case main body.

FIG. 14 is a perspective view showing a partially sectioned welding surface of the case main body.

FIG. 15 is a rear view of the case main body in a state where the back plate is attached.

FIG. 16 is a side view of the movement restriction pin.

FIG. 17 is a front view of the movement restriction pin.

FIG. 18 is a perspective view of another movement regulating pin.

19A and 19B are diagrams illustrating an operation of pushing the movement regulating pin into the slide member, and FIG. 19A is a schematic diagram showing a state before pushing the movement regulation pin into the slide member.
(B) is a schematic diagram showing a state after pushing a movement control pin into a slide member.

FIG. 20 is an enlarged sectional view of a main part showing another disk storage device.

FIG. 21 is an enlarged sectional view of a main part showing still another disk storage device.

22A and 22B are diagrams illustrating an opening operation of the cover member, wherein FIG. 22A is a schematic plan view illustrating a state where the cover member is closed, and FIG. 22B is a diagram illustrating a state where the cover member is opened. It is a schematic plan view.

[Explanation of symbols]

1 disk storage device, 2 case body, 3 cover member, 6 shutter member, 6b locking piece, 44 back plate, 45 concave portion, 48 welding protruding portion, 60 welding surface, 61 protruding shape

Claims (4)

[Claims] 1. A case body having an opening formed on a back side, a shutter member movably attached to the case body and opening and closing the opening, and one end side extending along a moving direction of the shutter member. A drop-off preventing member attached to the back side of the case main body so as to be separated from the back surface of the case main body via a predetermined gap, and preventing the shutter member from falling off by inserting one end side of the shutter member into the gap. In the above-mentioned fall prevention member or the case body, in a plurality of places,
A distal end portion is provided with a welding protrusion for contacting the case body or the drop-off preventing member and ultrasonically welding the drop-off preventing member to the case body, and the welding protrusion portion is at least one portion of the distal end portion. Wherein the surface of at least a portion of the case main body or the falling-off prevention member, which is in contact with the tip of the welding protrusion, has an uneven shape. 2. The method according to claim 1, wherein the uneven shape of the case main body or the falling-off preventing member is formed by subjecting a surface of the case main body or a surface of the falling-off preventing member to graining. Disk storage device. 3. The uneven shape of the case body or the falling-off preventing member is formed by providing a plurality of ridges in parallel on the surface of the case body or the surface of the falling-off preventing member. The disk storage device according to claim 1. 4. One end of the shutter member is cut off at both ends in the moving direction, and the falling-off preventing member is provided when the shutter member moves to one end in the moving direction. A portion where one cutout portion of the member is located is ultrasonically welded to the case body, and when the shutter member moves to the other end in the movement direction, the other cutout of the shutter member 2. The disk storage device according to claim 1, wherein the portion where the cut portion is located is ultrasonically welded to the case main body.