JP3052686U - Locking structure of tray for disk protection case - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to achieve both securing of holding strength at the time of attachment and securing of ease of attachment and detachment. [Structure] Rising piece 18 forming a substantially cylindrical locking portion 14
Is formed as a two-sided support on the diameter line. In this series of rising pieces 18, rising pieces 18-1 at every other position in the circumferential direction are defined and formed as locking pieces integrally having locking projections 36 at the upper ends, and the remaining rising pieces are formed. A piece 18-2 is arranged and interposed between the locking pieces as an engageable engaging piece on the periphery of the center hole of the disk.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a locking portion structure of a tray for a disk protection case, which enables a disk such as a compact disk as a recording medium to be removably locked and held.

[0002]

[Prior art]

 Discs as recording media, such as compact discs for music (CDs) and CD-ROMs such as personal computer software and game software, are usually stored in a disk protection case, stored, carried, transported, or displayed. You. The disc protection case has, for example, a combination of a pair of openable and closable bottom (back cover) and lid (front cover) connected at one end by a hinge, and a tray for holding a disc is fitted in the bottom. 2. Description of the Related Art A configuration in which a vehicle is furnished under clothes or the like is generally known.

[0003] Such a disk protection case tray has, for example, a disk storage space that is formed as a substantially circular concave portion, and a central portion of the storage space is provided when the disk is inserted into a center hole. The tray is formed to have a substantially cylindrical or substantially disk-shaped locking portion for locking and holding the disk.

[0004] As a locking portion of the tray, for example, a plurality of divided pieces are defined at the peripheral edge of a central circular hole of the disk storage space, and a substantially hook-shaped rising piece is elastically inwardly provided at the peripheral edge of the divided piece. A generally cylindrical configuration is known which is provided so as to be able to be tilted. In this type of locking portion, a locking projection is provided on the outer peripheral surface of the rising piece, and by locking the periphery of the center hole to the locking projection, the disk can be detachably held. I have.

[0005] In addition to the above-described structure in which the disk is housed in the bottom, for example, a two-sheet holding structure in which one end is hinged to a bottom or a lid to provide a disk storage space on both sides, A dual-purpose type that also serves as the bottom is also known as a tray for a disk protective case.

[0006]

[Problems to be solved by the invention]

 The rising piece which forms a well-known general locking portion is a so-called cantilever type in which only the outer side thereof is supported by a segment provided on the peripheral edge of the central circular hole. Since the fragments are bent and deformed, the locking strength of the locking pieces with respect to the center hole peripheral edge may be reduced due to local deterioration of the deformed portion due to repeated use.

[0007] Then, under the impact of dropping or the like, the load in the diameter direction of the disk directly acts in the shearing direction of the rising piece, and there is a possibility that the rising piece may be damaged or damaged. . That is, the holding strength of the disk during holding is likely to be impaired.

For example, Japanese Patent Laid-Open Publication No. 63-191453 discloses a so-called double-supported structure in which a rising piece serving as a locking portion is supported on both the outer side and the inner side. It has been disclosed. In such a configuration, since the rising piece is a two-sided type, the strength of the rising piece, and thus the locking strength and the holding strength of the disk, can be sufficiently ensured. And, since each rising piece is integral with the center pressing body, the inward inclination of the rising piece due to the bending deformation of the segment under the pushing of the pressing body causes the locking projection of the rising piece. The unlocking of the periphery of the center hole becomes possible. Therefore, the effect that the disk can be easily attached / detached is also obtained in this configuration.

However, in such a locking portion formed by a double-supported rising piece, the locking force of the locking projection on the periphery of the center hole is greatly increased as compared with that of the cantilever type, so that the disk has In order to ensure the ease of attachment and detachment, it is necessary to narrow the width of the segment itself to promote smooth and easy deformation of the segment. In addition, in order to ensure ease of attachment and detachment, the number must be reduced. For this reason, even in the known configuration of the double-supported type, there is inevitably a disadvantage in strength against an impact at the time of a fall or the like.

[0010] Here, a configuration in which the holding strength of the disk can be ensured by interposing a double-supporting rising piece having no locking projection between the free pieces having the locking projection has been proposed. No. 142075. However, in this known configuration, the loose piece with the locking projection is a floating type formed as a part of the pressing body located at the center of the locking portion. There is a possibility that the stability of the locking of the projections with respect to the periphery of the hole and the reliability of the locking and holding are inferior.

[0011] Further, the known locking portion locks and holds the disk between the locking projection and an annular projection provided on the outer periphery of the segment piece. Since the distance is relatively far away, the frictional force acting on the disc from these is likely to be relatively small. For this reason, in the known configuration, the disk is likely to rotate under vibrations during carrying, transporting, and the like. In particular, if the disk is rotated before reaching the user, such as at the time of shipment from the manufacturer, the direction of the label on the disk is shifted with respect to the case, which may impair the appearance of the product. .

[0012] If the rotation of the disk with respect to the locking portion occurs remarkably, there is a possibility that the rising piece and the peripheral edge of the center hole may be worn.

As a countermeasure for preventing such rotation of the disk, for example, it is conceivable to enhance the locking force by the locking projection. However, the enhancement of the locking force by the locking projections reduces the ease of attachment and detachment, and from this point, it is easy to ensure both locking strength and easy attachment and detachment. Absent.

An object of the present invention is to provide a locking portion structure for a tray for a disk protection case, which can ensure both securing and holding strength and easiness in attaching and detaching.

[0015]

According to an embodiment of the present invention, in order to achieve this object, a pressing member located at the center of a supposed center hole of a disk storage space extends in a corresponding radial direction. A series of divided pieces at the periphery of the assumed central hole are connected to each other on the diameter line of the assumed center hole through the support arm that has been set, so that the rising piece that forms the substantially cylindrical locking portion is supported by both ends. Expression.

[0016] Of the series of rising pieces forming the locking portion, the rising pieces at at least every other position in the circumferential direction are integrally provided with locking locking projections on the periphery of the center hole periphery of the disk at the upper end. The remaining rising piece is defined and formed as a locking piece having a height of at least the height at which the periphery of the center hole of the disk locked by the locking projection is engageable. It is arranged and interposed between the pieces.

[0017]

[Embodiment of the invention]

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

As shown in FIGS. 1 and 2, in the locking portion structure 10 of the tray for a disk protection case according to the embodiment of the present invention, the locking portion 14 of the tray 12 is moved to the center hole 16 a. The disk 16 is formed into a substantially cylindrical shape capable of detachably locking and holding the disk 16 under the insertion of a plurality of rising pieces 18.

A disk 16 as a recording medium typified by a compact disk for music (CD) or a CD-ROM such as personal computer software and game software is usually stored in a disk protection case 20 as shown in FIG. It is stored, carried, transported, or displayed on a disk protection case basis. The disc protection case 20 includes, for example, a combination of a pair of openable and closable bottom (back cover) 22 and lid (front cover) 24 connected at one end by a hinge 21, and the tray 12 is fitted to the bottom. It is generally known that the interior is configured in such a manner.

The tray 12 has, for example, a disk storage space 12a formed as a substantially circular concave portion, and a locking portion 14 is provided at the center of the space. Here, although the disk storage space 12a is embodied as a substantially circular concave portion, the present invention is not limited to this. For example, the disk storage space may be formed on the flat surface of the tray 12 under an arc-shaped projection or the like. The configuration may be specified.

By the way, since the locking portion structure 10 of the present invention is an improvement of the conventional locking portion in which a rising piece is erected on the periphery of the circular center hole, a two-dot chain line is shown in FIGS. As shown by, in this locking portion structure, a circular center hole 26 similar to the conventional one is assumed at the center of the disk storage space of the tray. Then, the peripheral portion of the assumed central hole 26 is divided by a cut groove 28 at an equal angle extending on the diameter line, for example, every 30 ° to form a series of divided pieces 30, and the peripheral edge of the divided piece is formed. Each of the rising pieces 18 is provided upright, and a substantially cylindrical locking portion 14 is formed which can be inserted into the center hole 16a of the disk.

Here, as shown in FIG. 1 and FIG. 2, in the present invention, the rising piece 18, and thus a series of divided pieces 30, are radiated from the pressing body 32 located at the center to the corresponding divided pieces. The support arms 34 are extended to each other on the diameter line of the assumed central hole 26. In other words, in the present invention, all the rising pieces 18 are formed in a so-called double-supported type in which the rising pieces 18 are connected to and supported by the tray 12 on both sides of the assumed central hole 26 in the diameter direction.

According to the present invention, of the series of rising pieces 18 forming the locking portion 14, for example, the rising pieces 18-1 at every other position in the circumferential direction correspond to the center hole 16a of the disk. Is defined and formed as a locking piece integrally having an upper end with a locking projection 36 which can be locked at the peripheral edge of the disk 16 while the remaining rising piece 18-2 is locked to the locking projection. As an engaging piece having at least a height capable of engaging with the periphery of the center hole, it is arranged and interposed between the locking pieces 18-1. In other words, the locking pieces 18-1 having the locking projections 36 at the upper end and serving as the rising pieces and the engaging pieces 18-2 serving as the rising pieces without the locking projections are alternately arranged and formed. I have.

In the locking portion structure 10, the locking piece 18-1 is provided at the peripheral edge of the dividing piece 30. An elastic inclination of the locking piece toward the center of the arm, that is, an inward inclination is obtained. That is, since the locking projection 36 at the upper end of the locking piece moves inward due to the inward inclination of the locking piece 18-1, the locking portion 14 is pushed into the center hole 16a of the disk as in the related art. If inserted, the insertion of the locking portion into the center hole under the deflection of the dividing piece 30 is guaranteed. After the peripheral edge of the center hole 16a passes through the locking projection 36, the disc 16 is locked by the locking of the center hole peripheral edge by the locking projection under the return of the locking piece 18-1. 14, and thus held on the tray 12.

Here, in the present invention, since the rising piece 18 is continuous with the center pressing body 32, by pushing the pressing body downward, the entire rising piece with the deflection of the segment 30 is pressed. Is obtained. In other words, when the pressing body 32 is pushed downward, the entire rising piece and, consequently, the locking piece 18-1 are inclined inward, so that the locking projection 36 almost releases the locking of the peripheral edge of the center hole 16a of the disc. Can be obtained at the same time. Therefore, it is possible to release the lock of the disk without strongly lifting the disk 16, thereby securing the easiness of attaching and detaching the disk.

In the present invention, since the locking piece 18-1 is a double-supported type using the divided piece 30 and the supporting arm 34 of the pressing body, its strength can be sufficiently secured. In other words, a local decrease in the strength of the segment 30 due to repeated bending when the disk 16 is attached and detached can be reliably prevented under the reinforcement caused by the use of the double-sided type. The locking and holding strength of the disk 16 by the stop projection 36 is sufficiently maintained.

Further, in the locking portion structure 10, an engaging piece 18-2 having no locking projection is disposed and interposed between the locking pieces 18-1 having the locking projections 36. Since the engagement piece 18-2 is formed to have a height that can be engaged with the peripheral edge of the center hole 16a locked by the locking projection 36, the engagement with the engagement piece is also limited. Thus, the disc 16 is held in a state where displacement in the diameter direction and rattling are suppressed. Since the engaging piece 18-2 is a double-supported type using the split piece 30 and the support arm 34 of the pressing body, in the present invention, the strength of the engaging piece itself is also reduced. It is sufficiently increased, not less than -1.

With such a two-sided engagement piece 18-2, its holding strength, that is, the holding strength against the displacement of the disk 16 in the diametrical direction and the like becomes sufficiently high, so that it can withstand the load in the shearing direction. Sufficient strength can be easily secured. Therefore, the holding strength of the disk 16 can be maintained sufficiently high.

Further, in the present invention, since the engaging piece 18-2 having no locking projection is disposed and interposed between the locking pieces 18-1, the locking projection 36 is formed by the rising piece. It is only provided in half of the total number of 18. That is, since the number of the locking projections 36 is reduced, excessive locking strength does not occur in spite of the double-supported configuration. Therefore, easiness in attaching and detaching the disk 16 can be sufficiently secured from this point as well.

As can be clearly seen from FIG. 1, in the present invention, the periphery of the center hole 16a of the disc is fixed to the locking projection 36 of the locking piece 18-1 at the base of the engaging piece 18-2. , That is, a pressing surface 38 that can be pressed and supported in the direction of the tip of the rising piece 18. The pressing surface 38 is formed, for example, as an arc-shaped inclined surface having a round shape as shown in the figure.

In such a configuration, the peripheral edge of the center hole 16a of the disc is pressed and supported by the pressing surface 38 toward the tip of the rising piece 18, and the locking position with the locking projection 36, and the position of the pressing surface Since a frictional force is generated against the periphery of the center hole at both of the pressed portions, the rotation of the disk 16 with respect to the locking portion 14 is sufficiently suppressed under the frictional force. Since the pressing surface 38 is provided at the base of the engaging piece 18-2 between the locking pieces 18-1 having the locking projections 36, the pressing force of the pressing surface is applied to the center hole 16a of the disc. Directly transmitted to the periphery. Therefore, the reliability of the engagement by the engagement protrusion 36 is further improved.

As described above, according to the locking structure 10 of the tray for a disk protection case of the present invention, the locking piece 18-1 having the locking projection 36 and the locking piece 18 having no locking projection are provided. -2 is a double-supported type, so that the locking strength and the holding strength with respect to the disk 16 and the easiness in attaching and detaching can be ensured at the same time.

Then, the rotation of the disk 16 with respect to the locking portion 14 is suppressed under the pressure and support of the pressing surface 38 provided at the base of the engagement piece 18-2. Therefore, the rotation of the disk 16 due to vibrations during carrying or transporting can be prevented, and the appearance of the product as well as the wear of the rising pieces 18 and the peripheral edge of the center hole 16a can be sufficiently prevented.

Although the pressing surface 38 has a round shape as an example here, it is sufficient that the peripheral edge of the center hole 16 a of the disk can be pressed and supported in the direction of engagement with the locking projection 36. Therefore, the pressing surface is not limited to the round shape, and may be formed as, for example, a linear slope.

Here, in one embodiment of the present invention, the interval between the cut grooves 28 is embodied as 30 °, but is not limited thereto, and may be, for example, 15 °, 45 °, or 60 °. Other intervals may be used. However, if the interval is increased, the number of the segment pieces 30, that is, the number of the rising pieces 18 decreases, and the rigidity of the segment pieces themselves increases due to the widening of the segment pieces. It is considered that the ease of the operation is reduced. Also, if the interval is narrowed, the rigidity of the segment itself may be reduced due to the narrowing of the segment 30. Therefore, an interval of about 30 ° is considered to be good.

Further, in one embodiment, the cut groove 28 is embodied as a form extending on the diameter line of the assumed central hole 26, but it is sufficient if the assumed central hole peripheral portion is divided into an appropriate plurality. Therefore, the segment is not limited to the diameter line, and may be formed by, for example, a cutout on a radial line extending in the radial direction at regular intervals from the pressing body 32.

However, as in the embodiment of the present invention, if the dividing piece 30 is divided by the cut groove 28 on the diameter line of the assumed central hole 26, the rising piece 18 at a position 180 ° away from the locking piece 18 -1 and the engagement piece 18-2 coincides with each other, and the locking position by the locking projection 36 is a position separated by 180 °, so that the locking strength by locking with the locking projection is further improved. . Since the locking position by the locking projection 36 is at an equal angle including a position deviated by 180 °, the stability and reliability of locking to the peripheral edge of the center hole 16a are ensured by securing an even locking force. improves.

Furthermore, in this embodiment, the locking pieces 18-1 are alternately provided every other rising piece 18, that is, the locking pieces and the engaging pieces 18-2 are arranged alternately. It is sufficient that the stop pieces are arranged at equal intervals, so that the stop pieces are not limited to every other one, and for example, the stop pieces may be defined every two or the like.

In this embodiment, the pressing body 32 is formed in a substantially flat and substantially disk shape. For example, as shown by a dashed line in FIG. The center hole 40 may be provided. By providing such a center hole 40, the center hole is used for positioning when the disk 16 is mounted and locked, so that the center position of the disk matches the center position of the locking portion 14, so-called Centering work becomes easier and workability is improved.

Here, in the embodiment of the present invention, the tray 22 separate from the bottom 22 is illustrated and described. However, the present invention is not limited to this, and a dual-purpose tray having a shared bottom can also be used. However, the locking part structure 10 of the present invention can be applied.

In this embodiment, the locking portion structure 10 of the tray 12, for example, a single-sheet holding type tray having the locking portion 14 only on the surface is illustrated, but the present invention is not limited to this. Instead, for example, the present invention may be applied to a so-called two-sheet holding type tray having locking portions on both the front and back surfaces of the tray.

As a disk protection case having such a two-sheet holding type tray, a configuration disclosed in a patent publication of Patent No. 2504930 can be exemplified, and therefore will not be described in detail here.

The locking structure of the two-sheet holding tray is basically the same as the locking structure 10 of the one-sheet holding tray 12, that is, the above-described configuration described in detail. As shown in FIG. 4, in this two-sheet holding type tray 112, the rising pieces 18 are erected on the peripheral edge of the dividing piece 30 on both the front and back surfaces, as shown in FIG. I have. The rising pieces 18 are connected to each other via a support arm 34 extending radially from the pressing body 32, and the locking pieces 18-1 having the locking projections 36 are engaged with the engagement pieces having no locking projections. By alternately defining and forming the pieces 18-2, the substantially cylindrical locking portions 14 that can be inserted into and engage with the center hole 16a of the disc are formed on both the front and back surfaces of the tray 112.

Also in the locking portion 14 of the two-sheet holding type tray 112, since the rising piece 18 is a so-called double-supported type that is continuous via the supporting arm 34 from the pressing body 32, the locking piece 18 is provided. 1, the reinforcing strength of the engaging piece 18-2 can sufficiently secure the locking strength and the holding strength to the disk 16. Then, the inward inclination of the locking pieces 18-1 on the corresponding sides of the front and back surfaces is obtained under the pressing of the pressing body 32, so that the ease of attaching and detaching the disk 16 is secured in the same manner as described above. it can.

Further, since the pressing body 32 and the support arm 34 can be shared by the locking portions 14 on the front and back surfaces, the structure of the present invention can be applied to the two-sheet holding tray 112 without complicating the configuration. The stop structure 10 can be easily applied.

When the locking portion structure 10 of the present invention is applied to such a two-sheet holding type tray 112, the locking piece 18-1 and the engaging piece 18- 2 are formed with their positions shifted. That is, as shown in FIG. 4, the locking pieces 18-1 and the engaging pieces 18-2 are formed alternately so as to form one set on the front surface and the back surface. According to this configuration, since the fragments 30 that bend when the disk 16 is attached and detached are different from each other on the front surface and the back surface, deterioration of the fragment is suppressed by preventing the deflection frequency of the fragments from being biased.

In the same manner as in the above-described embodiment, the periphery of the center hole 16a of the disc is engaged with the engaging projection 36 of the engaging piece 18-1 at the base of the engaging piece 18-2. Since the rotation of the disc 16 with respect to the locking portion 14 is sufficiently suppressed by integrally providing the pressing surface 38 that can be pressed and supported, the reliability of locking by the locking projection is further improved.

The embodiment of the present invention described above is for explaining the present invention, and does not limit the present invention in any way. The present invention is not limited to the one that has been modified or modified within the technical scope of the present invention. It goes without saying that all of these are included in the present invention.

[0049]

[Effect of the invention]

 As described above, according to the structure of the locking portion of the tray for the disk protection case according to the present invention, both the locking piece and the engaging piece of the locking portion are double-supported, so that the disk is locked. Sufficient strength and holding strength can be ensured. Then, by pushing in the center pressing body, it is possible to release the locking of the peripheral edge of the center hole by the locking projection, so that the ease of attaching and detaching the disc can be ensured.

Further, since at least every other position of the rising pieces is used as the locking piece, the locking strength with respect to the disk does not become excessively high. Can be secured easily.

Then, it is sufficient that the rising pieces are erected on both the front and back surfaces of the segment and the rising pieces are connected to each other via a support arm extending radially from the pressing body. Since the support arm and the support arm can be shared by the locking portions on the front and back surfaces, the configuration can be easily applied to the locking portion of the two-sheet holding type tray without complicating the configuration.

Further, a pressing surface which can press and support the periphery of the center hole of the disc in the locking direction with the locking projection of the locking piece is provided integrally at the base of the engaging piece. The rotation of the disk with respect to the part is sufficiently suppressed. Therefore, the reliability of the locking of the disk by the locking projections is further improved, and the aesthetic appearance of the product is reduced, and the rising pieces, the peripheral edge of the center hole, and the like can be sufficiently prevented.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a structure of a locking portion of a tray for a disk protection case according to the present invention.

FIG. 2 is a schematic vertical sectional view of the locking portion structure of the disk protection case tray taken along line AA in FIG. 1;

FIG. 3 is a schematic perspective view of the disk protection case in an open state.

FIG. 4 is a schematic longitudinal sectional view similar to FIG. 2, showing a modification of the locking portion structure of the tray for a disk protection case of the present invention.

[Explanation of symbols]

 10 Tray locking mechanism for disc protection case tray 12, 112 Tray 14 Locking section 16 Disc 18 Rising piece 18-1, 18-2 Locking piece, engaging piece 28 Cut groove 30-minute piece 32 Pressing body 34 Support arm 36 Locking projection 38 Pressing surface

Claims (6)

[Utility model registration claims] 1. A peripheral portion of an assumed central hole of a disk storage space is divided by a plurality of cut grooves at equal angles extending on the diameter line to form a series of divided pieces. A disk protection case tray having a substantially cylindrical locking portion that can be inserted and locked into the center hole of the disk by setting up the rising pieces, and corresponds to the segment from the pressing body located at the center. By making the divided pieces continuous with each other on the diameter line of the assumed central hole through the support arm extended in the radial direction, the rising piece is made to be a two-sided type, and this series of rising that forms the locking portion is formed. Of the pieces, rising pieces at at least every other position in the circumferential direction are defined and formed as locking pieces integrally having at their upper ends locking locking projections that can lock the periphery of the center hole of the disc, and The rising piece is an engaging piece having at least a height at which the periphery of the center hole of the disc locked by the locking projection can be engaged, and the disc protecting case tray is interposed and interposed between the locking pieces. Part structure. 2. A peripheral portion of an assumed central hole of a disk storage space is divided by a plurality of cut grooves at equal angles extending on a diameter line thereof to form a series of divided pieces. A disk protection case tray having a substantially cylindrical locking portion that can be inserted and locked into the center hole of the disk by setting up the rising pieces, and corresponds to the segment from the pressing body located at the center. By making the divided pieces continuous with each other on the diameter line of the assumed central hole through the support arm extended in the radial direction, the rising piece is made to be a two-sided type, and this series of rising that forms the locking portion is formed. Of the pieces, rising pieces at at least every other position in the circumferential direction are defined and formed as locking pieces integrally having at their upper ends locking locking projections that can lock the periphery of the center hole of the disc, and The rising piece is disposed and interposed between the locking pieces as an engaging piece having at least a height at which the periphery of the center hole of the disk locked by the locking projection can be engaged. Pressing the periphery of the center hole of the disc locked by the projection in the locking direction with the locking projection of the locking piece,
An engaging portion structure for a tray for a disk protection case formed integrally with a supportable pressing surface at a root thereof. 3. A peripheral portion of an assumed central hole of a disk storage space is divided by a plurality of cut grooves at equal angles extending on the diameter line to form a series of divided pieces, and a predetermined edge is provided at a peripheral edge of the divided piece. A stand for the disk protection case with a substantially cylindrical locking portion that can be inserted into and engaged with the center hole of the disk by setting up the rising pieces, and the rising pieces are set on the front and back surfaces of the tray respectively. A disk-protecting case tray of a two-sheet holding type, in which locking portions are respectively provided in the disk storage spaces on both the front and rear surfaces of the tray, and extending from the pressing member located at the center in the radial direction corresponding to the segment. By making the divided pieces continuous with each other on the diameter line of the assumed central hole via the protruded support arm, the rising piece is made to be a two-sided type, and this series of rising which forms the locking portion is performed. Of the reed pieces, rising pieces at at least every other position in the circumferential direction are defined and formed as locking pieces integrally having at the upper end a locking protrusion that can be locked on the periphery of the center hole of the disc, The remaining rising piece is an engagement piece having at least a height at which the periphery of the center hole of the disk locked by the locking projection can be engaged, and the disk protection case tray interposed and interposed between the locking pieces. Stop structure. 4. A peripheral part of an assumed central hole of a disk storage space is divided by a plurality of cut grooves at equal angles extending on a diameter line thereof to form a series of divided pieces. A stand for the disk protection case with a substantially cylindrical locking portion that can be inserted into and engaged with the center hole of the disk by setting up the rising pieces, and the rising pieces are set on the front and back surfaces of the tray respectively. A disk-protecting case tray of a two-sheet holding type, in which locking portions are respectively provided in the disk storage spaces on both the front and rear surfaces of the tray, and extending from the pressing member located at the center in the radial direction corresponding to the segment. By making the divided pieces continuous with each other on the diameter line of the assumed central hole via the protruded support arm, the rising piece is made to be a two-sided type, and this series of rising which forms the locking portion is performed. Of the reed pieces, rising pieces at at least every other position in the circumferential direction are defined and formed as locking pieces integrally having at the upper end a locking protrusion that can be locked on the periphery of the center hole of the disc, The remaining rising pieces are disposed and interposed between the locking pieces as engaging pieces having at least a height at which the periphery of the center hole of the disk locked by the locking projections can be engaged. Pressing the periphery of the center hole of the disc locked by the locking projection in the locking direction with the locking projection of the locking piece,
An engaging portion structure for a tray for a disk protection case formed integrally with a supportable pressing surface at a root thereof. 5. A peripheral portion of an assumed central hole of a disk storage space is divided by a plurality of cut grooves on a radial line extending radially from the center thereof to form a series of divided pieces, and a predetermined edge is provided at a peripheral edge of the divided piece. This is a disk protection case tray with a substantially cylindrical locking portion that can be inserted and engaged with the center hole of the disk by standing the rising pieces of the disk, respectively, corresponding to the segment from the pressing body located at the center Through a radially extending support arm, the split pieces are mutually connected to the pressing body, so that the rising piece is a two-sided type. Among the series of rising pieces forming the locking portion, At least every other rising piece in the circumferential direction is defined and formed as a locking piece having a locking protrusion integrally formed on the upper end of the center hole periphery of the disk, and the remaining rising piece is formed. The engaging portion of the tray for the disk protection case is disposed and interposed between the engaging pieces as an engaging piece having at least a height at which the peripheral edge of the center hole of the disk engaged with the engaging projection can be engaged. Construction. 6. A peripheral portion of an assumed central hole of a disk storage space is divided by a plurality of cut grooves on a radial line extending radially from the center to form a series of divided pieces, and a predetermined edge is provided at a peripheral edge of the divided piece. This is a disk protection case tray with a substantially cylindrical locking portion that can be inserted and engaged with the center hole of the disk by standing the rising pieces of the disk, respectively, corresponding to the segment from the pressing body located at the center Through a radially extending support arm, the split pieces are mutually connected to the pressing body, so that the rising piece is a two-sided type, of this series of rising pieces forming the locking portion. At least every other rising piece in the circumferential direction is defined and formed as a locking piece having a locking protrusion integrally formed on the upper end of the center hole periphery of the disk, and the remaining rising piece is formed. The engaging piece is disposed and interposed between the engaging pieces as an engaging piece having at least a height at which the periphery of the center hole of the disk engaged with the engaging projection can be engaged. Pressing the periphery of the center hole of the disc locked in the locking direction with the locking projection of the locking piece,
An engaging portion structure of a tray for a disk protection case formed integrally with a supportable pressing surface at a root thereof.