JP3505005B2 - Shutter biasing structure of disk drive device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter urging structure for urging a shutter for opening and closing an insertion opening for inserting a disk cartridge of a disk drive device in a closing direction.

[0002]

2. Description of the Related Art Conventionally, an apparatus for recording / reproducing information using an optical disk, a magnetic disk or the like as a recording medium has been known. In such an information recording / reproducing apparatus, the disc-shaped recording medium as described above is usually housed in a disc cartridge in order to prevent dust from adhering. The information recording / reproducing device has a disc drive device, and a disc cartridge is inserted into the disc drive device at the time of recording / reproducing information. The disk drive device rotates a disk housed in a disk cartridge and writes or reads information with an optical pickup, a magnetic pickup, or the like. The disk drive device is provided with a shutter at an insertion port for inserting a disk cartridge inside the device to prevent dust and dirt from entering. The shutter has a size of 1 to close the insertion slot.
It has one or two shutter leaves.

[0003]

However, the conventional shutter structure has a problem that the structure becomes complicated because the loading of the disk cartridge and the shutter leaf are interlocked. In recent years, disk drive devices have tended to become thinner, and therefore improvements have been desired.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a shutter urging structure for urging a shutter leaf with a simple structure in a shutter structure for closing an insertion opening of a disk cartridge of a disk drive device.

[0005]

In order to achieve the above object, the shutter biasing structure of the disk drive device of the present invention is provided with at least one spring member, and the spring member is substantially in a natural state. Placed in the same plane,
A pair of arms arranged opposite to each other and a connecting portion for connecting ends of the pair of arms farthest from each other are provided, and when the pair of arms are displaced out of the same plane, the spring An elastic force for returning the member to the natural state is generated, and the pair of arm portions are fixed to the pair of shutter leaves, respectively, and are displaced out of the same plane following the opening / closing operation of the shutter leaf. It is characterized by Further, at least one spring member may be configured as a pair of spring members fixed to both ends of the pair of shutter leaves, respectively. Further, the spring member may be formed by bending a single elastic bar member. Further, the connecting portion of the spring member may be configured to have a pair of shaft portions extending on the extension lines of the pair of rotation shafts of the pair of shutter leaves and extending in the extension line direction. It is also possible to form groove portions into which the pair of arm portions are respectively inserted at the side end portions of the pair of shutter leaves.

[0006]

EXAMPLES The present invention will be described below based on examples. FIG. 1 is a side sectional view showing a disk drive device to which an embodiment of a shutter structure according to the present invention is applied. The chassis frame 2 of the disk drive device 1 is provided with an opening for inserting the disk cartridge 5. A front bezel 10 is provided on the front surface of the disk drive device 1, and an insertion opening 12 is formed at a position corresponding to the opening. The insertion opening 12 is provided with a pair of opposed shutter leaves 20, 40. At the back of the insertion slot 12 of the disc drive device 1, a cartridge holder 8 for transporting the disc cartridge 5 is located. Cartridge holder 8
Stores the disk cartridge 5 and moves it to a loading position 7 shown by a dotted line in the drawing by a loading mechanism (not shown). At the loading position 7, the disc stored in the disc cartridge 5 is rotated,
Information is written or read by an optical pickup, a magnetic pickup, or the like.

FIG. 2 is a perspective view showing the shutter structure of the first embodiment. In FIG. 2, the direction of arrow I indicates the inside of the disk drive device, and the direction of arrow O indicates the outside of the disk drive device. As shown in FIG.
The shutter leaf 20 that closes the upper side of the insertion port 12
And a shutter leaf 40 that closes the lower side of the insertion port 12 is provided, and the shutter leaf 20 is set longer than the shutter leaf 40. The following first
In the description of the embodiments, the lateral width direction of the insertion slot 12 is simply referred to as "width direction".

A guide hinge 2 is provided on the upper edge of the insertion slot 12.
4 is formed along the upper edge, and holes at which the support shafts 22, 22 can be fitted are formed at both ends of the guide hinge 24 in the width direction. Further, cylindrical support shaft holders 25 are formed at both ends in the width direction of the upper end of the shutter leaf 20. The inner diameters of the support shaft holders 25, 25 are set to be slightly larger than those of the support shafts 22, 22. Then, the shutter leaf 20 is attached to the spindle holder 2
5 and 25 are positioned so as to sandwich the guide hinge 24 from both sides in the width direction, and the support shafts 22 and 22 are fitted into the guide hinge 24 through the support shaft holders 25 and 25, whereby the support shaft holders 25 and 25 are attached to the guide hinge 24. It is supported rotatably around the fixed support shafts 22, 22. In this way, the shutter leaf 20 is rotatably held by the guide hinge 24.

Similarly, a guide hinge 44 is formed at the lower end edge of the insertion slot 12 along the lower end edge, and holes at which both ends of the guide hinge 44 in the width direction can be fitted the support shafts 42, 42 are formed. Are formed. Further, cylindrical support shaft holders 45, 45 are formed at both ends in the width direction of the lower end of the shutter leaf 40. Spindle holder 4
The inner diameters of 5, 45 are set to be slightly larger than those of the support shafts 42, 42. The shutter leaf 40 is positioned so that the support shaft holders 45, 45 sandwich the guide hinge 44 from both sides in the width direction, and the support shafts 42, 42 are supported by the support shaft holders 4.
The support shaft holders 45, 45 are rotatably supported around the support shafts 42, 42 fixed to the guide hinges 44 by fitting the guide shafts 45, 45 into the guide hinges 44. In this way, the shutter leaf 40 has the guide hinge 4
4 is rotatably held.

At both ends of the shutter leaf 20, the groove 2 is formed.
8 and 28 are formed. The grooves 28, 28 extend from the support shaft holders 25, 25 described above to the vicinity of the tip of the shutter leaf 20. Similarly, the shutter leaf 40
Grooves 48 are formed on both sides of the groove. Groove 48,
The reference numeral 48 extends from the support shaft holders 45, 45 described above to the vicinity of the tip end portion of the shutter leaf 40.

On both sides of the shutter leaves 20, 40,
A spring member 60 is provided for each. The spring member 6 is shown in FIG.
The shape of 0 is shown. As shown in FIG. 3, the spring member 60 is
One elastic bar is formed by bending, and a pair of opposing arm portions 61 and 62 and a pair of arm portions 61 and 62 are provided.
Is formed by a connecting portion 65 that connects the ends that are most distant from each other. Further, when the spring member 60 is in the natural state, the arm portions 61 and 62 and the connecting portion 65 are on the same plane. Further, the connecting portion 65 is formed with shaft portions 65a and 65b extending in the same direction as each other at a distance equal to the distance between the support shaft 22 and the support shaft 42. Spring member 6
0 shaft portions 65a and 65b are inserted into the spindle holder 25 and the spindle holder 45, respectively, and the arm portions 61 and 62 are provided with the groove 28 and the groove 48, respectively.
Has been inserted into. In this state, the shaft portions 65a and 65b extend on the extension lines of the support shafts 22 and 42, and the arm portions 61 and 62 extend from the support shafts 22 and 42 of the shutter leaves 20 and 40 toward the tip end portions.

With this structure, when the shutter leaves 20 and 40 rotate, the arm portions 61 and 62 of the spring member 60 follow the shutter leaves 20 and 40 and are deformed about the shaft portions 65a and 65b. Then, it is displaced out of the same plane. Then, an elastic force is generated in the spring member 60 to return the arm portions 61 and 62 to the original coplanar state, which causes the spring member 60 to rotate the shutter leaves 20 and 40 vertically downward. Urge to.

With the above-described structure, when the disc cartridge 5 is inserted into the disc drive device 1 through the shutter leaves 20 and 40, the shutter biasing structure operates as follows.

The tip of the disk cartridge 5 to be inserted contacts the shutter leaves 20 and 40, and the shutter leaves 20 and 40 are rotated as indicated by arrow A. At this time, the arm portions 61 and 62 of the spring member 60 are deformed following the shutter leaves 20 and 40 and displaced out of the same plane.
Therefore, an elastic force is generated in the spring member 60 to return the arms 61 and 62 to the original coplanar state, whereby the spring member 60 rotates the shutter leaves 20 and 40 in the vertical direction. Energize you. Shutter leaf 40
Is set shorter than the shutter leaf 20, the disk cartridge 5 first passes through the tip of the shutter leaf 40, and the shutter leaf 40 is closed by the bias of the spring member 60. Then, the disc cartridge 5 passes through the tip of the shutter leaf 20, and the shutter leaf 20 is closed by the bias of the spring member 60.

When the disk cartridge 5 is ejected from the inside of the disk drive device 1, the disk cartridge 5 contacts the shutter leaves 20 and 40, and the shutter leaves 20 and 40 rotate in the direction indicated by arrow B. . Similar to when the disk cartridge is inserted, the spring member 60 is elastically urged to rotate the shutter leaves 20 and 40 in the vertical direction. The disc cartridge 5 first passes through the tip of the shutter leaf 40, and the shutter member 40 is closed by the bias of the spring member 60. Then, the disc cartridge 5 passes through the tip of the shutter leaf 20 and the spring member 60 is attached. The shutter leaf 20 is closed by the force. As described above, according to the first embodiment, the shutter leaf can be biased with an extremely simple structure.

Next, the shutter structure of the second embodiment will be described with reference to FIGS. FIG. 5 is a perspective view showing the shutter structure of the second embodiment. In FIG. 5, the direction of arrow I is inside the disk drive device, and the direction of arrow O
Indicates the outside of the disk drive device. As shown in FIG. 5, the insertion port 112 is provided with a shutter leaf 120 that closes the upper side of the insertion port 112 and a shutter leaf 140 that closes the lower side. In the following description of the second embodiment, the lateral width direction of the insertion slot 112 will be simply referred to as "width direction".

A pair of cylindrical guide hinges 124, 124 are provided at the upper edge of the insertion opening 112 of the front bezel 110.
Are formed along the upper edge. Further, the guide hinges 124, 124 are formed with through holes having an inner diameter slightly larger than that of the support shaft 122. Shutter leaf 12
The support shaft insertion portions 126, 1
26 is formed. The support shaft insertion portions 126, 126 are
It is formed in a tubular shape, and its inner diameter is set larger than that of the support shaft 122. A support shaft holder 125 is formed at the center of the upper end of the shutter leaf 120 in the width direction. The support shafts 125, 122 are provided at both ends of the support shaft holder 125 in the width direction.
There is a hole into which can be fitted. Then, the shutter leaf 120 is located between the guide hinges 124, 124 by the support shaft holder 125, and the support shaft insertion holes 126, 12 are provided.
6 is positioned outside the end width direction of the guide hinges 124, 124, and the support shafts 122, 122 are fitted into the support shaft holder 125 through the support shaft insertion portions 126, 126 and the guide hinges 124, 124. Thus, the support shafts 122, 122 fixed to the support shaft holder 125 are rotatably supported by the guide hinges 124, 124. In this way, the shutter leaf 120 has the guide hinge 12
4 and 124 are rotatably held.

Similarly, at the lower edge of the insertion port 112, 1
A pair of tubular guide hinges 144, 144 are formed along the lower edge. The guide hinges 144 and 144 are formed with through holes having an inner diameter slightly larger than that of the support shaft 142. Further, support shaft insertion portions 146 and 146 are formed at both ends in the width direction of the lower end of the shutter plate 140. The support shaft insertion portions 146, 146 are formed in a tubular shape, and the inner diameter thereof is set larger than the support shafts 142, 142. A support shaft holder 145 is provided at the widthwise center of the upper end of the shutter leaf 140. At both ends in the width direction of the support shaft holder 145, holes into which the support shafts 142, 142 can be fitted are provided. The shutter leaf 140 is attached to the guide hinge 14 by the support shaft holder 145.
4 and 144 so that the support shaft insertion holes 146 and 146 are positioned outward of the guide hinges 144 and 144 in the end width direction, and the support shafts 142 and 142 are supported by the support shaft insertion portions 146 and 146. By being fitted into the spindle holder 145 through the guide hinges 144 and 144, the spindles 142 and 142 fixed to the spindle holder 145 are rotatably supported by the guide hinges 144 and 144. In this way, the shutter leaf 140 includes the guide hinge 144,
It is rotatably held by 144.

At both ends of the shutter leaf 120, the groove 1 is formed.
28 and 128 are formed. The grooves 128, 128 are
The shutter leaf 1 from the shaft insertion portions 126, 126, respectively.
It extends to the vicinity of the tip of 20. Similarly, grooves 148 and 148 are formed on both sides of the shutter leaf 140. The grooves 148 and 148 are the support shaft insertion portions 146,
It extends from 146 to the vicinity of the tip of the shutter leaf 140.

Spring members 160 are provided on both sides of the shutter leaves 120 and 140, respectively. FIG. 6 shows the shape of the spring member 160. As shown in FIG. 6, the spring member 160 is formed by bending a single elastic bar, and has a pair of opposing arm portions 161 and 162 and a pair of arm portions 161 and 162 that are closest to each other. It is configured by a connecting portion 165 that connects the separated end portions. In addition, when the spring member 165 is in the natural state, the arms 161, 1
62 and the connecting portion 165 are in the same plane. further,
The connecting portion 165 is formed with shaft portions 165a and 165b extending in the same direction as each other at intervals equal to the distance between the support shafts 122 and 142 and having folded portions. The shaft portions 165a and 165b of the spring member 160 are inserted into the support shaft insertion portions 126 and 146 and the guide hinges 124 and 144, respectively, and the arm portions 161 and 162 are provided with the groove 128 and the groove 1.
It is inserted in 48. In this state, the shaft portions 165a, 1
65b extends on the extension lines of the support shafts 124 and 144,
The arms 161 and 162 extend from the support shafts 124 and 144 toward the tips of the shutter leaves 120 and 140.

Due to this structure, when the shutter leaves 120 and 140 rotate, the spring member 160 is rotated.
The arms 161 and 162 of the shutter leaf 120 and 14
Following 0, the shaft portions 165a and 165b are displaced around the axes and displaced out of the same plane. Therefore, an elastic force is generated in the spring member 160 to return the arm portions 161 and 162 to the original coplanar state, which causes the spring member 160 to rotate the shutter leaves 120 and 140 vertically downward. Energize.

With the above-mentioned structure, the shutter structure of the second embodiment operates as follows. That is, the disc cartridge 5 is replaced with the shutter leaf 12
When the disk cartridge 5 is inserted into the disk drive device 1 through 0 and 140, the tip of the disk cartridge 5 contacts the shutter leaves 120 and 140, and the shutter leaves 120 and 140 are rotated in the direction indicated by arrow A. At this time, since the spring member 160 is displaced out of the same plane, an elastic force is generated to return the arms 161 and 162 to the original state of the same plane, which causes the spring member 160 to vertically move the shutter leaves 120 and 140. It is biased to rotate in the direction. Since the shutter leaf 140 is set shorter than the shutter leaf 120, the disk cartridge 5 first passes through the tip of the shutter leaf 140, and the shutter leaf 140 is closed by the elastic force of the spring member 160 described above. Then, the disc cartridge 5 passes through the tip of the shutter leaf 120, and the elastic force of the spring member 160 causes the shutter leaf 12 to move.
0 closes.

Further, when the disc cartridge 5 is ejected from the inside of the disc drive device 1, the disc cartridge 5 has shutter leaves 120, 140.
And the shutter leaves 120, 140 rotate in the direction indicated by arrow B in FIG. At this time, the arms 161, 16
2 is displaced out of the same plane, an elastic force is generated in the spring member 160 to return the arms 161 and 162 to the original same plane, which causes the spring member 160 to move in the same manner as when the disk cartridge is inserted. Shutter leaf 120, 1
40 is urged to rotate in the vertical direction. The disc cartridge 5 first passes through the tip of the shutter leaf 140, and the shutter leaf 140 is closed by the biasing force of the spring member 160.
Passes through the tip of the shutter leaf 120, and the shutter leaf 120 is closed by the bias of the spring member 160.
As described above, according to the second embodiment, the shutter leaf can be biased with a simple structure.

In both the first and second embodiments, the rotation axis of the shutter leaf is horizontal and the direction in which the shutter leaf closes the opening is vertical.
The present invention only needs to have a configuration in which the spring member is displaced in accordance with the rotation of the shutter leaf and thereby generates an urging force, so that the axis of the shutter leaf is in the vertical direction, for example.
It can also be applied to a shutter structure of a so-called vertical type disk drive device.

[0025]

As described above, according to the shutter urging structure of the disk drive device according to the present invention, the spring member is displaced in accordance with the rotation of the shutter leaf accompanying the insertion / ejection of the disk cartridge, whereby the spring member is displaced. By urging the shutter leaf to rotate in the vertical direction, that is, in the direction of closing the opening by the generated elastic force, urging the shutter leaf to block the insertion opening of the disc cartridge with a very simple structure. Became possible.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a disk drive device to which an embodiment of a shutter structure of the present invention is applied.

FIG. 2 is a perspective view showing a shutter structure of the first embodiment.

FIG. 3 is a plan view showing a spring member provided in the shutter structure shown in FIG.

FIG. 4 is a side sectional view of the shutter structure shown in FIG.

FIG. 5 is a perspective view showing a shutter structure of a second embodiment.

FIG. 6 is a plan view showing a spring member provided in the shutter structure shown in FIG.

FIG. 7 is a side sectional view of the shutter structure shown in FIG.

[Explanation of symbols]

1 Disk drive device 10 front bezel 12 insertion slot 20, 40 shutter leaf 22, 42 spindle 24,44 Guide hinge 25, 45 Spindle holder 28, 48 groove 60 spring member 110 front bezel 112 insertion slot 120,140 Shutter leaf 122, 142 spindle 124, 144 Guide hinge 125, 145 spindle holder 126,146 Support shaft insertion part 128,148 grooves 160 spring member

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-44764 (JP, A) Actual flat 1-109894 (JP, U) Actual flat 5-43388 (JP, U) Actual flat 1- 93694 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) G11B 33/02 G11B 17/04

Claims (5)

(57) [Claims] 1. A pair of opposed shutter leaves, which are rotatably provided in both directions inside and outside the disc drive device, are urged to close the insertion port at the disc cartridge insertion port of the disc drive device. In the shutter urging structure, at least one spring member is provided, and the spring member is arranged in a substantially natural state in substantially the same plane, and the pair of opposed arm portions and the most pair of arm portions are arranged. A connecting portion for connecting the distant end portions, and when the pair of arm portions are displaced out of the same plane, an elastic force for returning the spring member to a natural state is generated. The pair of arm portions are fixed to the pair of shutter leaves, respectively, and are displaced out of the same plane following the opening / closing operation of the shutter leaf.
Shutter urging structure of disk drive device. 2. The at least one spring member comprises:
1 fixed to both ends of a pair of shutter leaves
The shutter biasing structure for a disk drive device according to claim 1, wherein the shutter biasing structure is a pair of spring members. 3. The spring member is formed by bending one elastic rod member.
The shutter urging structure of the disk drive device according to claim 1. 4. The connecting portion of the spring member has a pair of shaft portions extending on the extension lines of the pair of rotation shafts of the pair of shutter leaves and extending in the extension line direction. The shutter urging structure for the disk drive device according to claim 3. 5. The side edges of the pair of shutter leaves,
5. The shutter urging structure for the disk drive device according to claim 1, wherein a groove is formed into which each of the pair of arms is inserted.