KR100608064B1 - Disk cartridge - Google Patents

Abstract

The disc cartridge is started. The upper case includes a top wall formed to be inclined at a predetermined angle from a rim toward the center, and a first side wall extending from a rim of the top wall. The lower case includes a lower wall formed to be inclined at a predetermined angle from the rim toward the center, And a second sidewall portion extending from a rim of the lower wall and engaging with the first sidewall portion to form a part of the sidewall so that the volume of the inner storage space of the case gradually increases from the innermost view of the disc to the outer edge .

Description

Disk cartridge {Disk cartridge}

1 is a perspective view showing a conventional disk cartridge,

FIG. 2 is an exploded perspective view of a disc cartridge according to an embodiment of the present invention, FIG.

3 is a perspective view showing a method of coupling the upper case and the lower case,

4 is a perspective view showing a state in which the upper case and the lower case are coupled,

5 and 6 are perspective views showing the operation of seating the disk in the lower case,

7 is a partially enlarged view showing a method of engaging the deformation preventing portion,

FIG. 8 is a sectional view taken along the line I-I 'shown in FIG. 4,

9 is a sectional view taken along the line II-II 'shown in FIG. 4,

10 is an exploded perspective view of a disc cartridge according to another embodiment of the present invention,

11 is an exploded perspective view of a disk cartridge according to another embodiment of the present invention,

FIG. 12 is a perspective view showing the engaged state of the disk cartridge shown in FIG. 11,

13 is a perspective view showing a disc cartridge according to another embodiment of the present invention having a cover.

Description of the Related Art

100 ... case 110 ... upper case

111 ... upper wall 112 ... first sidewall portion

113 ... first rail 114 ... protrusion

120 ... lower case 121 ... lower wall

1211 ... plane portion 122 ... second side wall portion
123 ... second rail 124 ... depression
125 ... groove portion 126 ... engaging portion
128 ... side wall 129 ... open
130 ... opening 131 ... storage space
141 ... first region 142 ... second region
143 reinforcing portion 150 first guide surface
151 ... second guide surfaces 161, 162, 163, 164 ... mounting holes

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BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a disk cartridge, and more particularly, to a disk cartridge whose structure is changed so that it can be mounted on a mobile device.

In general, a disc cartridge is an optical disc, which is an information recording / reproducing medium, which is rotatably accommodated and is mounted on a disc drive. An example of a conventional disc cartridge is shown in FIG.

Referring to FIG. 1, a disc cartridge is shown in Japanese Unexamined Patent Application Publication No. 2003-16758. The disc cartridge has an upper case 1a and a lower case 1b coupled to each other, And a hinge unit 4 provided at one side of the case 1 so as to be rotatable at one end so as to be able to be opened and closed at one side of the case 1, And a cover member 3 for opening and closing the cover member 3.

In order to accommodate the disc D in the case 1, the disc D is inserted into the case 1 inside the case 1 after the cover member 3 is opened in the direction of the arrow indicated by the one-dot chain line, Close it.

In order to replace the disc D housed in the case 1, the cover member 3 is opened, the disc D is taken out, another disc D is inserted, and then the cover member 3 is closed.

Reference numeral 2 denotes an opening formed in the disk drive so that a pickup (not shown) or the like can access the disk D in the case 1.

In the conventional disk cartridge configured as described above, when the disk is exchanged, the cover member 3 is repeatedly opened and closed, and it is difficult to secure the rigidity of the hinge portion 4 by this repeated operation.

Also, when the disc D is taken out from the case 1, the disc surface is damaged due to contact with the entrance 5, and the information surface of the disc D may be contaminated by the user's fingerprints or the like.

A supporting portion for supporting the non-look of the disk D must be separately provided so that the information surface of the disk D inserted into the case 1 does not come into contact with the case 1. [

SUMMARY OF THE INVENTION It is an object of the present invention to provide a disc cartridge which can be miniaturized by efficiently utilizing the space in the disc cartridge and can prevent lifting, deformation and breakage of the upper and lower cases.

In order to achieve the above object, a disc cartridge according to the present invention is a disc cartridge comprising: a disc on a disc, which is an information recording or reproducing medium; a case having a top case and a bottom case slidingly connected to the top case to form an internal storage space for accommodating the disc; And an opening provided in at least one of the upper case and the lower case so that the recording and reproducing unit of the disc drive can access the disc,
The upper case includes an upper wall formed to be inclined at a predetermined angle from a rim toward the center and a first side wall extending from a rim of the upper wall, and the lower case is inclined at a predetermined angle from the rim toward the center And a second sidewall portion extending from an edge of the lower wall and forming a part of the sidewall by engaging with the first sidewall portion,

The volume of the inner storage space of the case gradually increases from the innermost view of the disk toward the outer edge.

According to the present invention, either the upper wall or the lower wall is provided with a flat surface on which the inner side of the disk can be seated.
According to the present invention, in order to prevent a gap from being generated due to the deformation after the upper case and the lower case are coupled, one side of the upper case or the lower case may have an anti- Wherein the disc cartridge is a disc cartridge.

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According to the present invention, there is further provided a shutter which is slidably provided in the case and opens and closes the opening, and an elastic member that elastically biases the shutter in a direction of closing the opening.

According to the present invention, there is further provided a cover detachably installed in the case and provided with a storage space capable of covering at least the opening.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a perspective view of the disc cartridge according to the embodiment of the present invention, FIG. 3 is a perspective view showing a method of coupling the upper case and the lower case, FIG. 4 is a perspective view showing a state in which the upper case and the lower case are engaged, 7 is a partial enlarged view showing a method of engaging the deformation preventing portion, and Fig. 8 is a sectional view of the I-I 'shown in Fig. 4, and Fig. FIG. 9 is a sectional view taken along line II-II 'of FIG. 4, and FIG. 10 is an exploded perspective view of a disc cartridge according to another embodiment of the present invention.

2, the disc cartridge includes a case 100 having an upper case 110 and a lower case 120, which is coupled to the upper case 110 to provide a storage space in which a disc (not shown) ). Here, the disk cartridge and the case are used in the same sense.

The upper case 110 has an upper wall 111 provided to be inclined at a predetermined angle from a rim to a center and a lower wall 111 extending from the rim of the upper wall 111 by a predetermined length And the first side wall portion 112 is provided.

The lower case 120 has a lower wall 121 provided to be inclined at a predetermined angle from a rim to a center and a lower wall 121 extending upwardly from a rim of the lower wall 121 And a second sidewall 122 which is coupled to the first sidewall 112 to form a part of the sidewall 128 (see FIG. 4).

8 and 9, since the upper wall 111 and the lower wall 121 are formed to be inclined from the rim toward the center, the upper case 110 and the lower case 120 can be separated from each other, The volume of the storage space 131 enclosing the inner circumferential view D1 of the disk D is smaller than the volume of the storage space 131 surrounding the outer circumference of the disk D And the volume of the storage space is gradually increased from the inner periphery of the disk D to the outer periphery thereof.

This is caused by deflection of the disc itself, wobble in the vertical direction when the disc is rotated, run-out of the turntable (not shown) of the spindle motor (not shown) The error between components and the mounting error when the disk cartridge is inserted increases as the disk moves to the outer circumference of the disk. Therefore, the volume of the disk cartridge needs to be larger than the inner circumference of the disk, so that the disk cartridge can be miniaturized.

The lower wall 121 is inclined from the edge to the center and is flat and flat so as to be supported by the underside D1 of the disk D against the non- And a part 1211 is provided.

Therefore, when the disc D descends on the inner surface of the lower wall 121, only the inner circumferential view D1 of the disc D contacts the plane portion 1211 and the remaining portion is not contacted, Lt; / RTI > Therefore, in order to protect the information surface of the disk D, it is not necessary to separately form a support portion at a position opposite to the non-play D1 of the disk D in the disk cartridge.

Since the disk D rotates at a high speed in the case 100, the pressure is high at the outer peripheral portion of the disk D than in the inner peripheral portion, so that noise is generated. However, There is also an effect that the noise can be reduced to some extent by increasing the volume.

An opening 130 is provided in the upper wall 111 of the upper case 110 so that a turntable (not shown) of a reproducing and recording unit (not shown) of the disc driving apparatus (not shown) can access the disc D have. The opening 130 may be provided on one of the upper wall 111 and the lower wall 121 to correspond to a single-sided disk provided on one side of the information surface. 10, the openings 130 may be provided on both the upper wall 111 and the lower wall 121 to correspond to both of the both-side discs having the information surfaces on both sides or both sides thereof have.

As shown in FIG. 3, the disk D is provided with a hub h made of a metal (for example, magnetic stainless steel) in a non-information area around the center hole H. When the disc cartridge is mounted on the disc drive, the magnet (not shown) of the turntable and the metallic hub h are magnetically coupled to each other so that the single-disc disc D is rotated by a spindle motor (not shown).

 The upper wall 110 and the lower case 120 are separated from each other by an opening 129 which is not provided with the first sidewall 112, So that the lower case 120 is fitted.

A first rail 113 having a concave shape is provided on the inner side of the first side wall part 112 and a second rail 113 protruding in a convex shape is provided on the outer side of the second side wall part 122. (123) are provided. Accordingly, when the lower case 120 is coupled to the upper case 110, the second rail 123 is engaged with the first rail 113 while sliding. The first and second rails 113 and 123 may be disposed at different positions from each other. However, the present invention is not limited thereto.

Preferably, the case 100 is further provided with locking means for preventing the upper case 110 and the lower case 120 from being separated from each other when the upper case 110 and the lower case 120 are coupled to each other.

The first rail 113 is provided with a protrusion 114 and the second rail 123 is formed with a recessed shape in which the protrusion 114 can be fitted at a position facing the protrusion 114, A depression (not shown) is provided. The first rails 113 and the second rails 123 are elastically deformable to some extent so that when the upper case 110 and the lower case 120 are engaged with each other, When the upper case 110 and the lower case 120 are completely engaged with each other, the protrusion 114 is engaged with the depression (not shown) The case 110 and the lower case 120 are locked to each other. The protrusions 114 and depressions (not shown) may be disposed in different positions, but the present invention is not limited thereto and various modifications may be applied to the same functions.

It is preferable that the lifting prevention member is further provided to prevent the upper case 110 and the lower case 120 from being lifted due to deformation and dimensional error after the upper case 110 and the lower case 120 are coupled to each other.

7, the unlocking prevention member includes a depression 1291 provided at one side of the opening 129 of the upper case 110 and a depression 1291 formed at one side of the second side portion 122 of the lower case 120 And a protrusion 1231 extended from the protrusion 1231. The depression 1291 and the protrusion 1231 are aligned with each other and the depression 1291 is provided with a plurality of engaging portions 126. The depression 1231 is recessed to form a plurality of grooves 125 The concave portion 1291 and the protruding portion 1231 are locked by being coupled to each other. The lifting prevention member is not limited thereto and various modifications having the same function may be applied.

4 and 9, the upper case 110 includes a first region 141 including the opening 130 and a second region 142 that is a region other than the opening. It is preferable that the first area 141 is as thin as possible in order to prevent interference as an operation area of the reproducing and recording apparatus for accessing the disk D. [ It is preferable that the second area 142 is as thick as possible in order to reinforce the strength of the case 100 as an area deviating from the operation area of the reproduction recording apparatus.

Accordingly, in an embodiment of the present invention, as shown in FIG. 9, the second region 142 protrudes outward (upward in FIG. 4) from the first region 141. In an embodiment of the present invention, only a part of the second region 142 is protruded including the depressed portion 1291 of the anti-shake portion, but the present invention is not limited thereto and the entire second region 142 may be protruded . Also, a second region protruding from the lower case 120 may be provided.

As shown in FIG. 4, a reinforcing portion 143 for preventing deformation is further provided at the tip of the opening 130. The reinforcing part 143 is formed by being slightly immersed downward from the upper wall 111 so as not to interfere with the reproducing and recording device to be accessed to the disk D through the opening part 130. The reinforcing portion 143 is provided only in the upper case 110 because the opening 130 is provided only in the upper wall 111. [ 10, reinforcing portions 143 and 144 may be provided on the upper case 110 and the lower case 120, respectively, when the case 100 is provided with openings on both sides thereof.

Referring to FIG. 4, the side walls 128 are provided with a pair of first guide surfaces 150 facing each other. The pair of first guide surfaces 150 maintains a surface contact with a holder (not shown) provided on the disk drive when the disk cartridge is mounted on the disk drive. The pair of first guide surfaces 150 may be formed in the same direction as the opening 130 as shown in FIG. 4, but the scope of the present invention is not limited thereto.

In addition, when the disk cartridge is mounted on the disk drive, the disk cartridge is used to maintain surface contact with a holder (not shown) provided in the disk drive, A pair of second guide surfaces 151 facing each other may be further provided. At this time, if the interval W1 between the pair of first guide surfaces 150 and the interval W2 between the pair of second guide surfaces 151 are the same, the case 100 is mounted on the disk drive It can be mounted in the direction of arrow A3 or A4. But the scope of the present invention is not limited thereto.

Reference numerals 161, 162, 163 and 164 denote positioning holes for precisely holding the loading position of the disc cartridge in the disc drive.

An operation of mounting or replacing a disk in the disk cartridge according to an embodiment of the present invention will be described with reference to the drawings.

3, when the upper case 110 is placed on the lower case 120 and is pushed in the direction of arrow A1, the second rail 123 is inserted into the first rail 113 The upper case 110 and the lower case 120 are coupled. At this time, the engaging part 126 and the groove part 125 of the lift preventing part are engaged with each other, so that the depression part 1291 and the protruding part 1231 are coupled to each other.

 In order to exchange the disk, the upper case 110 and the lower case 120 should be separated from each other. 3, the first rail 113 is slid along the second rail 123 so that the upper case 110 is slid along the second rail 123, (120). The disc D is placed on the lower case 120 and the first rail 113 and the second rail 123 are aligned with each other so that the upper case 110 is rotated The upper case 110 and the lower case 120 are coupled to each other and the disc D is housed in the case 100 when the case 100 is pushed in the direction A1.

The disc cartridge according to an embodiment of the present invention mounts the disc D on the lower case 120 completely separated from the upper case 110 and engages the upper and lower cases 110 and 120. Therefore, as shown in FIGS. 5 and 6, the outer circumference of the disc D or the inner circumference of the center hole H and the rim can be held together by hand so that the possibility that the information storage layer D2 is contaminated by the fingerprint little.

The upper case 110 and the lower case 120 are slidably coupled in the lateral direction by the first and second rails 113 and 123. The upper case 110 and the lower case 120 are coupled to each other without a separate coupling member (for example, a screw (not shown)) or a separate coupling process (fusion process) Cost can be saved.

FIG. 11 is an exploded perspective view of a disc cartridge according to another embodiment of the present invention, FIG. 12 is a perspective view showing a state of coupling the disc cartridge shown in FIG. 11, and FIG. 1 is a perspective view showing a disc cartridge according to an embodiment. 2 and 9 are the same members having the same functions, detailed description thereof will be omitted.

11 and 12, an upper case 210 having an upper wall 111 and a first side wall 112 extending downward from a rim of the upper wall 111, And a second sidewall portion 122 extending upward from the rim of the lower wall 121. The lower sidewall portion 122 has an upper portion and a lower portion. The upper case 210 is provided with an opening 130. The first and second side walls 112 and 122 are provided with a first rail 113 and a second rail 123, respectively. The first rail 113 and the second rail 123 are provided with protrusions 114 and depressions 124, respectively. The case 200 is formed by inserting the second rail 123 into the first rail 113 and coupling the upper and lower cases 210 and 220 together. The upper case 210 is provided with an opening 130.

The upper case 210 is provided with a guide rib 230 which crosses the front end of the opening 130 and the shutter 240 is slidably mounted on the guide rib 230. Reference numeral 250 denotes a torsion spring as an example of an elastic member for elastically biasing the shutter 240 in a closing direction of the opening 130. The torsion spring 250 is inserted into the upper case 210 through the slot 211. One end 251 of the torsion spring 250 is engaged with the engagement groove 241 provided in the shutter 240, And is caught by the catching jaw 212 of the upper case 210. When the disk cartridge is mounted on a disk drive (not shown), the shutter 240 is slid in the direction of arrow A5 in FIG. 12 by a shutter opening device (not shown) to open the opening 130. When the disc cartridge 200 is taken out from the disc drive, the shutter 240 is slid in the direction of arrow A6 by the elastic force of the torsion spring 250 to close the opening 130.

Referring to FIG. 13, the disc cartridge according to another embodiment of the present invention further includes a cover separately provided to protect the disc D. In another embodiment of the present invention, the disk cartridge is the same as the above-described embodiments, and thus only the cover will be described.

Referring to FIG. 13, the cover 400 includes a storage space 402 and an outer wall 401 forming the storage space 402. The storage space 402 is provided to accommodate up to a region where the opening 130 of the case 300 is formed. A part of the outer wall 401 is opened so that the case 300 can be taken in and out. The outer wall 401 is provided with a pair of protrusions 404 facing each other and protruding toward the storage space 402. The gap W3 between the pair of protrusions 404 is preferably slightly smaller than the width W1 of the case 300 so that the case 300 may not be disengaged from the cover 400 arbitrarily.

13, the disc cartridge is transported while the case 300 is engaged with the cover 400. When the disc cartridge is mounted on the disc drive, the cover 400 is detached and only the case 300 Respectively.

According to the above configuration. It is possible to prevent the information surface of the disk D from being contaminated by the fingerprints or the substance through the opening 130 during transportation.

As described above, in the disc cartridge according to the present invention,

First, by reducing the volume of the inner space of the disc cartridge around the inner periphery of the disc and by gradually increasing the volume toward the outer periphery of the disc, the space between the disc cartridge and the reproduction / recording apparatus is efficiently utilized, And,

Secondly, in order to protect the information surface of the disc, it is not necessary to separately form a support portion for supporting the non-smooth look inside the disc cartridge,

Third, there is an effect that the upper case and the lower case can be prevented from being disturbed by deformation or the like.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. Therefore, the true scope of the present invention should be determined by the technical idea of the appended claims.

Claims (5)

A case having a disk on the disk which is an information recording or reproducing medium and a lower case which forms an internal storage space in which the upper case and the upper case are slidingly coupled to the upper case to store the disk, And an opening formed in at least one of the upper case and the lower case so as to be accessible to the disc cartridge, The upper case includes an upper wall formed to be inclined at a predetermined angle from a rim to a center, and a first side wall extending from a rim of the upper wall, The lower case includes a lower wall formed to be inclined at a predetermined angle from a rim toward the center and a second side wall extending from a rim of the lower wall and joined with the first side wall to form a part of the side wall, Wherein a volume of the inner storage space of the case gradually increases from an inner side of the disc to an outer edge thereof. The method according to claim 1, Wherein either one of the upper wall and the lower wall is provided with a flat surface portion on which the inner side of the disk is seated. The method according to claim 1, The upper case and the lower case may further include an anti-skid portion coupled to the upper case or the lower case to elastically deform the upper case or the lower case so as not to generate a gap due to deformation after the upper case and the lower case are coupled. Disc cartridge. The method according to claim 1, Further comprising: a shutter which is slidably installed in the case and opens and closes the opening, and an elastic member that elastically biases the shutter in a direction of closing the opening. The method according to claim 1, Further comprising a cover detachably installed in the case and having a storage space at least capable of wrapping the opening.

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