JP2003128175A - Disk case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk case capable of preventing breakage of connected portions among a plurality of ribs for holding a disk, receiver table, engagement portion (arm) and depressing button holding disks due to shock when the case drops. SOLUTION: There is provided a disk case comprised of a plate portion 110 for use in removably holding a disk at a predetermined position and a cover portion 100 which can be opened or closed in respect to the plate portion 110. The plate portion 110 is comprised of a receiver table 160, a plurality of ribs 150, an engagement portion 140 having an arm 141, and a push button 170. There are provided a plurality of base portions 156 formed at a position where the inner-most circumference of the receiver table 160 and each of the outer circumferences of the plurality of ribs 150 are contacted to each other. Each of the plurality of base portions 156 has an arcuate shape as seen in its top plane view and its longitudinal sectional shape is arcuate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc case for accommodating a disc-shaped disc for recording data signals such as audio and video.

[0002]

2. Description of the Related Art For example, digital versatile (multipurpose)
There are roughly two types of storage cases for discs that record and hold a large amount of audio and video information, such as discs (hereinafter referred to as DVDs). One of them is a so-called compact disc (hereinafter referred to as CD) case, and its configuration is used because the discs have the same shape. But in this case the CD
It is difficult to distinguish it from the case, and when recording a movie etc. with a small case itself, there is a limit to the size of the jacket or booklet that introduces those contents, so a case similar to the case of so-called video software is also used Has been.

In such a case, it is important how to easily take out the disc. The standard diameter of the disk was relatively large, 120 mm, and it was difficult for a person with a small hand to handle. For discs such as DVD, CD
Since it is necessary to increase the recording capacity compared to the above, a structure is adopted in which two discs are stuck together. To prevent peeling damage at that part, locking means that does not give unnecessary force to the discs and removal Means are required. Therefore, various proposals have been made to provide a disc case that can be easily removed while surely holding the disc.

The inventors of the present invention have proposed a Japanese Patent Application No.
0-22125 etc. have proposed one locking method. According to this method, when the disc is taken out, the upper part of the button at the upper part of the engaging part that is engaged with the central hole of the disc is pushed down to release the engagement relationship, and thereafter, even if the pushing down force is removed, the original relationship is released. There is no return to the engagement relationship of. Therefore, it is easy to take out because the disc is only picked up after releasing the engagement relationship. When the disc is placed on the engaging portion during storage and pushed down, the engaging portion is elastically deformed and the locking member comes into contact with the upper side of the disc, so that the disc is engaged and held by the case.

During this time, the case is mainly configured to be deformed, so that the deformation of the disc during storage and removal can be minimized, and the signals recorded on the disc or the disc itself can be prevented from being damaged. Moreover, because ribs that are higher in height than the engaging portion are arranged around the engaging portion,
Unnecessary force is applied to the central portion of the case when carrying it, and as a result, the cover side of the case or the printed matter stored inside the cover side does not push down the locking member. Therefore, the engagement is carelessly disengaged, the disk moves around in the case,
As a result, the signal recorded on the disc will not be unreadable.

[0006]

However, according to the present invention,
There were the following problems. That is, the disc is locked by defining the position of the disc by the cylindrical rib of the engaging part and contacting the locking member of the engaging part above the disc. It has been found that when the case is accidentally dropped in this state, the cylindrical rib and the locking member may be damaged and the case may not function as the case. As a result, it has been found that the disc can move horizontally in the case, and the signal surface of the disc may be scratched by moving around in the case, which may make it difficult to read the signal.

The details will be described below. FIG. 9 is a perspective view showing a conventional disc storage case, FIGS. 10 and 11 are perspective views of the vicinity of the engaging portion, respectively, and FIG. 12 is a plan view of the engaging portion.
FIG. 13 shows a sectional view of the engaging portion.

As shown in FIG. 9, the entire case 10 is integrally formed and is roughly divided into a cover side 100, a tray side 110 and a back portion 120 connecting them.
On both sides of the back portion 120, there are hinge portions 121 connected to the cover side 100 and the tray side 110, respectively. By bending the cover side 100 and the tray side 110 through the hinge portions 121, 121, the cover side 100 and the tray side 110 face each other to form one case 10.

An opening 20 is formed on the opposite side of the back side 120 of the cover side 100 and the tray side 110, and the opening 2
On the 0 side, a finger rest 2 that accepts an operation to open the case 10
1 and a pair of hooks 10 in which each fits
Two sets of 1,111 are provided.

When the hinge portions 121, 121 are bent to integrally form the case 10, the hooks 101, 111 are fitted to each other and the elasticity of the hinge portions 121, 121 allows the case 1 to be formed.
0 is prevented from opening.

The cover side 100 is usually provided with at least one arm 102 projecting inwardly thereof. In the arm 102, a booklet (not shown) that stores the disc 200 (FIG. 13) and describes the usage and explanation of the information content recorded on the disc is sandwiched and stored.

On the other hand, the disc 200 is provided on the tray side 110.
A pair of disc protection ribs 190 for protecting the disc 200 are provided on the outer periphery of the disc 200 that is engaged with the engagement portion 130 and the engagement portion 130. The disc protection ribs 190 are used to apply a force to the accommodated disc 200 from the side, or when the case 10 is accidentally dropped.
This is to protect it from the outer periphery of the disk, and is not intended to hold or maintain the disk 200 at a predetermined height.

Further, the protrusion 12 is provided at the center of the back portion 120.
2 is provided to prevent the disc 200 from being detached from the case 10 due to a drop impact when the case 10 accommodating the disc 200 is accidentally dropped as described later. Furthermore, a pair of tongue portions 123 that support the position of the protrusion 122 are provided on both sides of the protrusion 122.

As shown in FIGS. 10 to 13, the engaging portion 130 is a locking portion 140 that receives an operation for locking and releasing the disk 200, and the disk 2 in cooperation with the locking portion 140.
It is composed of a cylindrical rib 150 divided into a plurality of pieces for holding 00 and a pedestal 160 which is located at the base thereof and supports the disk 200 at a predetermined height.

The engaging portion 140 is an arm 14 extending inward from the plate 115, which is a bottom plate on the tray side 110.
1 and a push button portion 170 connected to the arm 141.

The push button portion 170 has a disc center hole 20.
The vertical surface 171, which is lightly engaged with the wall surface 202 (FIG. 13) of No. 1, the lip 172 which continuously presses the vicinity of the disk central hole 201 from above, and the locking portion 140 is pushed down when the disk 200 is removed. The button-shaped portion 173 receiving the force, the button-shaped portion 173 to the lip 172.
It is composed of an inclined surface 174 connected to.

The arm 141 and the push button portion 170 are connected to each other by the connecting portion 14 extending from the arm 141 toward the push button portion 170.
2 and a side wall 175 extending from the vertical surface 171 are connected to each other via a joint 143.

On the other hand, the pedestal 160 for supporting the disc 200 at a predetermined height is extended above the plate 115, and the disc receiving portion 161 which is a flat portion provided on the upper surface thereof is placed here ( (Stored) Disk center hole 2
The vicinity of 01 is supported from below. Here, in the connecting portion between the wall surface 162 of the pedestal 160 and the plate 115 of the case 10, the notch 163 is provided at both end portions near the locking portion 140.
Is provided.

Therefore, the unsupported portion 164, which is not directly supported by the plate 115 by the notch 163, is different from the other portion of the disc receiving portion 161 in the disc receiving portion 16.
Since only one is connected to the wall surface 162, when a force is applied to the cradle 160 from above, the joint portion is elastically deformed and can bend downward.

The cylindrical rib 150 extends from the pedestal 160 to the base 1
It is composed of a plurality of ribs 151 and 151 each extending upward through 54 and forming an arc shape as a whole. The groove 152 that divides the ribs 151 and 151 extends to the disc receiving portion 161, and facilitates the ribs 151 to bend toward the center when the disc 200 is taken out.

Here, the cylindrical rib 150 and the vertical surface 171 form an arc as a whole as shown in FIG. 12, and the diameter d thereof is as shown in FIG. The diameter D is substantially the same as the diameter D. Further, as shown in FIGS. 12 and 13, of the cylindrical rib 150, the rib 151 facing the locking portion 140 is provided with a convex portion 153. Disc 20 stored
Since 0 is lightly pressed from above by the convex portion 153, it is possible to prevent the disc 200 from tilting toward the locking portion 140 when the disc is stored.

Therefore, the disk 200 to be locked and stored is
The position of the disk 200 is regulated by the arc, and the disk 200 is placed on the disk receiving portion 161, and the disk 200 is pressed so as not to leave the locking relationship even when it is subjected to vibration or impact by the lip 172.

FIG. 14 is a view for explaining the relationship between the heights of the push-button portion and the ribs, FIG. 15 is a cross-sectional view showing the relationship between the button-shaped portion, the ribs and the case when the case is deformed, and FIG. Shows a partially enlarged view of FIG.

As shown in FIG. 14, the rib 151 extends to a position H which is higher than the height h of the button portion 173 when the engagement with the disk 200 is released. Therefore, when carrying the case 10 or the like, the case 1 is mistakenly carried.
Even if the vicinity of the locking part 140 is pressed from the upper and lower surfaces of 0 (see FIG.
5), the elastically deformed cover side 100 has the button portion 173.
Before it is pushed down to its release position, it abuts the upper surface of the rib 151, and as shown in FIG.
Cannot be deformed downward. Therefore, this cover side 1
Even if 00 is deformed by being pressed, the disk 20
Since the button-shaped portion 173 cannot be pushed down to the position where the engagement relationship of the button-shaped portion 173 with respect to 0 is released, the engagement relationship of the disc 200 is not inadvertently released.

Next, FIG. 17 to FIG.
9 is used, and the state of ejecting the disc is shown in FIGS.
4 will be described. 17 to 19 are cross-sectional views showing an initial stage of storing a disc, a state in the middle of storing, and a stage of finishing storing, FIG. 20 is an enlarged plan view of an engaging portion showing a notch position, and FIG. Fig. 2 is a cross-sectional view showing the relationship at the start and the state where the disc is held.
2 to 24 are cross-sectional views showing the states at the initial stage of disc ejection, during disc ejection, and at the end of ejection.

To store the disk 200, as shown in FIG. 17, the disk 200 is set at a position substantially concentric with the engaging portion 130, and then the vicinity of the disk center hole 201 is pressed down by the pressing force P. Since the flexure of the unsupported portion 164 is used when the disc 200 is stored, in order to reliably store the disc 200, a pushing-down force P is applied to the range of the unsupported portion 164 or the portion where the disc cradle 160 is absent. desirable. As a result, the disc central hole 201 abuts on the rib 151 and the lower face of the disc 200 abuts on the disc receiving portion 161.

When the pushing-down force P is further applied from the state of FIG. 17, the pushing-down force acts on the unsupported portion 164 via the disk 200, and the unsupported portion 164 elastically deforms downward in FIG. At this time, a force is generated on the disc 200 to slide on the inclined surface 174 in the direction of the lip 172, and the unsupported portion 164 is elastically deformed to produce an inclination, so that a force is generated on the disc 200 to slide down the inclined surface 174 (FIG. 18).
In the middle, S), this force elastically deforms the rib 151 in contact with the disk 200 in the direction of the lip 172 (FIG. 18).
Medium, T). Further, the force of pushing down the unsupported portion 164 acts on the entire disc receiving base 160,
The entire 1 is elastically deformed downward in the direction of the locking portion 140.

For this reason, the cylindrical rib 150 extending upward from the disk pedestal 160 also has the locking portion 14 similarly.
Since it leans downward in the 0 direction, the rib 151 leans toward the locking portion 140 in cooperation with the force S described above. Therefore disk 2
00 can move in the direction of the locking portion 140,
01 and the lip 172 of the locking portion 140 are reduced in overlap distance to facilitate passage of the lip 172 through the disc center hole 201.

Here, when the deformation of the rib 151 and the arm 141 progresses to the position where the tip of the lip 172 slips through the disk center hole 201 by the elastic restoring force of the arm 141, the tip of the lip 172 slips through and the locking portion 140 is formed. Return to original posture. When the pushing down force P is released, the rib 151 and the unsupported portion 164 return to their original postures due to elastic deformation, and the disc 200 returns to the center position of the engaging portion 130. As a result, the disc 200 can be held between the disc receiving portion 161 and the lip 172 (FIG. 19).

Here, the wall surface 162 formed by the notch 163.
The amount by which the plate 115 and the plate 115 are separated is sufficient to achieve the above-mentioned object, and the unsupported portion 1 is formed during the molding process.
It is appropriately selected taking into consideration that a sufficient resin flow rate can be secured to 64, a connection distance that does not cause unnecessary deformation after molding, and the like. Here, as shown in FIG.
The groove 152 extending from both ends 165 of the disc receiving base 160 to the disc receiving portion 161 is cut out to the one closest to the arm 141. When a downward force is applied to the disk pedestal 160, the groove 152
This is because it was considered that elastic deformation is stably generated around the axis.

Since the unsupported portion 164 is elastically deformed in the downward direction, a certain amount of force is required because the connecting portion has an L-shaped cross section, so that the disc 200 can be stored at the time of storage. There is no possibility that this portion is inadvertently deformed by its own weight and the holding of the disc 200 becomes insufficient.

On the other hand, when removing the disk 200,
In the stored state shown in FIG. 21, the push button portion 170 is pushed downward. Then, as shown in FIG. 22, the arm 141 rotates around the junction with the plate 115 and the arm 141
Also bends, and the contact distance between the lip 172 and the disk 200 decreases. Further, following the lip 172, the disc 200
Is pushed in the direction of the locking portion 140 (S in FIG. 22), and the rib 151 of the cylindrical rib 150 bends in the central direction accordingly (T in FIG. 22). Further, since the disc 200 receiving the downward force via the lip 172 pushes down the unsupported portion 164, the entire disc receiving base 160 is elastically deformed downward in the locking portion 140 direction, and as a result, the disc receiving portion 16 is released.
The bending T of the rib 151 extending from 1 toward the center is increased.

The elastic deformation of the disk receiving portion 161 including the unsupported portion 164 is set so that a force sufficiently larger than the force for elastically deforming the arm 141 is set, so that the push button portion 170 and The unsupported portion 164 will not be pushed down to the same extent and the removal will not be disabled.

Thus, the disk 200 moves horizontally,
When the elastic restoring force of the arm 141 overcomes the frictional force between the inner wall of the disc center hole 201 and the tip of the lip 172, the lip 17
The distal end of the second member slips through the disc center hole 201, and the lip 172 enters the lower surface of the disc 200, so that the engagement relationship is canceled. At the same time, the lateral deformation force applied to the rib 151 disappears and the force that pushes down the unsupported portion 164 also disappears, so that the rib 151 returns to the normal posture (FIG. 23).

When the pushing down force is removed, the disk 2
Since the position of 00 is regulated by the cylindrical rib 150 that has returned to the original posture, the tip of the lip 172 does not slip through the disc center hole 201 again and return to the engaging relationship, and the inclined surface on the lip 172 is Button-shaped part 1 including 174
The disk 200 rests on the disk 73. As a result, the locking relationship is completely released, and the disk 200 can be easily picked up (FIG. 24).

Next, the case 1 containing the disk 200
The disk storage state when 0 is accidentally dropped will be described with reference to FIGS. 25 to 28. FIG. 25 is a cross-sectional view showing the movement of the disc when it receives a drop impact, FIG. 26 is a cross-sectional view showing the function of a protrusion that suppresses the movement of the disc when it receives a drop impact, and FIG. 27 shows an example of the protrusion shape. FIG. 28 is an enlarged sectional view showing a gap between the outer peripheral edge of the disk and the inner peripheral wall of the protective rib. FIG. 29 is an enlarged plan view showing a conventional example of a connection shape of an arm and a push button section, FIG. 30 is an enlarged sectional view of an engaging section of the conventional example, and FIG. 31 is an enlarged sectional view showing a conventional example of an engaging section. is there. When the case 10 accommodating the disk 200 is accidentally dropped, and in particular, when the disk 100 is dropped with the cover side 100 facing downward, the inertial force of the falling disk 200 is the convex portion 153 and the lip 1.
72 and will be received. However, the convex portion 153 maintains the posture of the disc 200 during storage and has no ability to lock the disc 200 at a predetermined position.
As a result, as shown in FIG. 25, the disc 200 rotates about the lip 172. Due to this rotation, the side of the disk center hole 201 facing the lip 172 may slip through the convex portion 153, and the disk 200 may come out of the locking relationship.

Therefore, in order to suppress this rotation, a protrusion 122 as shown in FIG. 26 is provided. Since the protrusion 122 is arranged in such a length as to overlap the outer peripheral portion 203 of the disc 200, the outer peripheral portion 203 of the disc 200 which is about to rotate due to a drop impact is prevented from contacting the protrusion 122 and further rotating. As a result, the disc 200
Is prevented from coming off the case 10.

As shown in FIG. 27, the projection 122 is arranged so as to gradually separate from the signal surface 204 of the disk 200 as it approaches the disk 200, so that only the outer peripheral portion 203 of the disk 200 comes into contact with the projection 122. can do. This prevents the protrusion 122 from coming into contact with the signal surface 204 of the disc, thereby preventing the signal surface 204 from being damaged and making it impossible to read the signal recorded on the disc 200.

Further, the above-mentioned protrusion 122 is formed on the back portion 120.
Since it is extended from the inside to the case 10 in FIG.
As can be seen from the above, there is no obstacle in opening and closing the case 10 and storing and taking out the disk 200.

By the way, as described above, the disc protection ribs 190 provided on the tray side 110 are provided on the outer peripheral side of the disc 200 when the stored disc 200 is accidentally applied with force from the side or accidentally dropped. It is intended to protect this from. But disk 2
When the outer peripheral edge 203 of the disk 200 supported by the central hole 201 of the disk is arranged so as to contact the disk protection rib 190, the outer peripheral edge 203 of the disk 200 and the outer peripheral edge 203 of the disk 200 are stored when the disk 200 is accommodated or taken out. It is conceivable that the inner wall 191 of the protection rib 190 may come into contact with the inner wall 191 of the protection rib 190, which may hinder the storage or removal operation, or an unnecessary force may be applied from the disc protection rib 190 to the outer peripheral edge 203 of the disc.

In particular, if the disk 200 is stored for a long period of time in the latter state, the disk 200 may be deformed in some cases, and in the worst case, signal reading may be affected. Therefore, in order to avoid such a situation, as shown in FIG. 28, a slight gap 192 is provided between the outer peripheral end 203 of the disc 200 and the inner peripheral wall 191 of the disc protection rib 190. This void 192 is provided in the case 10 so that it can be ensured in any case for the above purpose.
Is set as a sufficient amount in consideration of variations in injection molding.

However, when the case 10 is accidentally dropped due to the presence of the gap 192, the disc 200 in the case 10 slides between the gaps 192 and the outer peripheral end 203 is the inner peripheral wall of the disc protection rib 190. The disc central hole 201 deforms the engaging portion 130 until it comes into contact with 191 and receives a drop impact, which may damage or cut the cylindrical rib 150 or the push button portion 170 of the engaging portion 130. I knew it was.

For example, when the case 10 is dropped with the opening 20 side facing downward, the cylindrical rib 150 is deformed by the drop.
Was found to break or break at its base 154. As a result of the cylindrical rib 150 being formed substantially the same as the disc center hole 201, the disc 200 has the above-mentioned void 1
When moving for 92 minutes, the cylindrical rib 150 is pushed and bent by the disk center hole 201 according to the moving amount.

At this time, each rib 151 is attached to the pedestal 1
Since it is required to extend vertically from 60 and to maintain a predetermined diameter up to the lower end of the rib 151, the base portion 15
Reference numeral 4 is formed so as to be connected to the disc receiving portion 161 at a right angle in the outer shape. Therefore, it was found that when the above-mentioned deformation force is applied, the stress of the deformation force concentrates on this lower end 155 and the portion is damaged.

On the other hand, when the back portion 120 is dropped downward, the above-mentioned deformation force acts on the push button portion 170. Since this force is received by the vertical surface 171, the entire push button portion 170 is moved laterally or pushed upward, that is, pushed up in the cover side 100 direction. Therefore, it was found that stress concentrates on the joint 143 (FIG. 10) between the arm 141 and the push button portion 170, and as a result, the portion is broken and damaged.

It is also understood that these breaks and breaks do not occur only when dropped in the above-mentioned direction, and depending on the drop direction, drop impacts are complicatedly entangled, and both may be broken and broken at the same time. It was

In either case, the disc center hole 2
01, a cylindrical rib 150 and a connecting portion 1 that have a diameter substantially the same as that of 01.
Since the disc 42 is broken and broken, the disc central hole 201
Cannot be engaged with. Therefore, the function as the case is not fulfilled, and as a result, the disk 2 is stored in the case 10.
00 will be able to move around. It has been found that, if the signal surface 204 of the disk is scratched by this, in the worst case, the signal cannot be read.

Therefore, the present invention was devised in view of the above-mentioned problems, and even if the case is accidentally dropped during transportation or transportation, each part that holds the disc in the case by the impact of the fall. For example, it is possible to prevent damage to the joints between the ribs, the pedestal, the locking portion (arm) and the push button portion, and to stably hold the disc stored and held in the case at all times. A plurality of bases are formed at positions where the innermost circumference of the pedestal and the outer circumferences of the plurality of ribs are in contact with each other, and each of the plurality of bases has an arcuate planar shape and a longitudinal section. By making the shape of the arc, even if the impact when the case is dropped is strongly applied to the plurality of bases, since each of the bases has an arcuate longitudinal cross-section rather than a point, it is strengthened more than the strength of the conventional base. Because there is It is possible to prevent breakage damage of each base in advance, and in addition to the above configuration, the pedestal is connected to each of the plurality of bases, and the disk held by the pedestal abuts on the base. Since a plurality of step portions having a depth that does not occur are provided, the pedestal and the plurality of ribs that are respectively connected to the base portion having higher strength are used, and therefore, even if a shock is received when the case is dropped. The disk can be stably held at all times, and in addition to the above configuration, it has a pair of notches formed by the arm and the side wall of the push button portion, and the notch has a planar shape of an arc. Therefore, it is an object of the present invention to provide a disk case capable of preventing breakage of the arm.

[0049]

In order to solve the above problems, the present invention provides a disk case having the following configurations (1) to (3). (1) A plate portion 110 for detachably holding a disc to be stored at a predetermined position, and the plate portion 11
A disc case having a cover portion 100 that can be opened and closed with respect to 0, and the plate portion 110 supports a central hole 201 of the disc 200 and holds the disc 200 at a predetermined height. A pedestal 160 and the central hole 20 of the disc 200 that extends further above the pedestal 160 and is held by the pedestal 160.
A plurality of ribs 150 that come into contact with the inside of the central hole 201 with respect to 1 and the plurality of ribs 150 are provided so as to face the plurality of ribs 150. A locking portion 140 having an arm 141 that is elastically extended obliquely above the plate portion 110 by bending a portion upward, and a locking portion 140 that is connected to the arm so as to be sandwiched by the tip of the arm 141. , The cradle 1
In the disk case 10 including the push button portion 170 that allows the disk to be attached to and detached from the disk 60, the innermost circumference of the pedestal 160 and the ribs 150.
Has a plurality of base portions 156 formed at positions in contact with the respective outer peripheries of the respective bases, and each of the plurality of base portions 156 is
A disk case characterized in that the planar shape is an arc shape and the vertical cross-sectional shape is an arc shape. (2) The pedestal 160 is provided with a plurality of stepped portions 166 that are continuous with each of the plurality of bases 156 and have a depth such that the disks held by the pedestal 160 do not contact the base 156. The disk case according to claim 1, wherein the disk case is provided. (3) Side wall 1 of the arm 141 and the push button portion 170
The disk case according to claim 1 or 2, further comprising a notch portion 176 formed by the numeral 75, and the notch portion 176 having an arc-shaped planar shape.

By changing the shape of the portion where the stress due to the drop impact concentrates from a right-angled shape to an arc shape, the stress is dispersed and excessive stress concentration is prevented, and damage and breakage due to impact stress are prevented.

[0050]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the disk case of the present invention will be described below, and thereafter,
Examples of the present invention (first to fourth examples) will be described.

The present invention has a plate portion for detachably holding a disc to be housed, for example, a DVD disc having a diameter of 120 mm at a predetermined position (the central position of the disc case), and can be opened and closed with respect to the plate portion. And a cover portion that becomes The plate portion includes a pedestal having a structure described below, a plurality of ribs, a locking portion, and a push button portion. That is, the cradle supports the central hole of the disc and holds the disc at a predetermined height. The plurality of ribs extend further above the pedestal and come into contact with the central hole of the disk held in the pedestal from the inside of the central hole. The locking portion is provided so as to face the plurality of ribs, a cut is made in a part of the plate portion, and a part of the plate portion is bent upward so that the locking portion is diagonally above the plate portion. It has elastically extended arms. The push button portion is connected to the arm so as to be sandwiched by the tip of the arm, and allows the disc to be attached to and detached from the pedestal. Further, the base has a plurality of bases formed at positions where the innermost circumference of the cradle and the outer circumferences of the plurality of ribs are in contact with each other, and each of the plurality of bases has an arcuate planar shape and a vertical cross-sectional shape. Is arcuate. With this configuration, even if the impact when the case is dropped is strongly applied to the plurality of bases, each of the bases has an arcuate planar shape and an arcuate vertical cross-sectional shape, and thus is stronger than the conventional base strength. Since it is also reinforced, it is possible to prevent breakage damage of each of the bases.

The receiving base of the disk case according to the present invention has a plurality of depths that are continuous with each of the plurality of bases and that the disks held by the receiving bases do not come into contact with the bases. Since it uses the pedestal and the plurality of ribs that are connected to the base having higher strength, the disc is always stable even when the case is dropped. Can be held.

Furthermore, the disk case of the present invention has a pair of notches formed by the arm and the side wall of the push button portion, and the planar shape of the notches has an arc shape, It is possible to prevent arm breakage.

[0054]

EXAMPLES Next, examples (first to fourth examples) of the disk case of the present invention will be described in order.

(First Embodiment) FIG. 1 is a perspective view showing the overall structure of a disk case according to the first embodiment of the present invention. 2 and 3 are perspective views near the engaging portion of the disk case shown in FIG. 1, and FIG. 4 is a vertical cross-sectional view near the engaging portion. The same components as those described above are designated by the same reference numerals and the description thereof will be omitted.

The disk case (FIG. 1) according to the first embodiment of the present invention has substantially the same structure as the conventional disk storage case (FIG. 9), except for the following three points. Is. That is, (1) the portions in which the innermost circumference of the cradle 160 and the outer circumferences of the plurality of ribs 151 are in contact with each other are the base portions 156 having an arc-shaped planar shape (planar arc shape), and the base portions 156.
The vertical cross-sectional shape when each is cut longitudinally is arc-shaped (section arc-shaped)
(FIG. 4, 157) (2) Each base 156 having an arcuate cross-section has a pedestal 16
0 is a position lower than the upper surface of the disk receiving portion 161 (horizontal plane contacting the disk outer peripheral surface in the vicinity of the disk central hole 201), and the disk pedestal 160
The outer peripheral surface of the disc is prevented from abutting on the bases 156 having an arcuate cross section when mounted on the disk (3). It is provided. The same parts as those described above are designated by the same reference numerals and the description thereof will be omitted.

Specifically, each of the base portions 156 of the plurality of ribs 151 extending perpendicularly upward from the disc receiving portion 161 which is the upper surface of the receiving stand 160 has an arc-shaped cross section at a portion in contact with the disc receiving portion 161. is there. That is, as shown in detail in the sectional view of FIG.
The cross-sectional shape of the connecting portion which is in contact with 51 is not a right angle as in the conventional one (FIGS. 10 and 30) but an arc shape (R shape). Further, the surface formed by the outer peripheries of the plurality of ribs 151 contacting the inner wall of the disc center hole 201 is
Since it is necessary that the diameter is substantially the same as the diameter of the disk, the disk center hole 20 is provided when the base portion 156 having the arc-shaped cross section is present.
Since 1 does not fit securely under the outer peripheral surfaces of the plurality of ribs 151, the base 156 is lowered by one step from the disk pedestal 161 to form a recess 166 (step), and from this, the disk center is raised by an arc-shaped cross section. The holes 201 are surely set in the lower portions of the outer peripheral surfaces of the plurality of ribs 151. In other words, if the portion 157 (FIG. 4) having an arcuate cross section is not higher than the disc receiving portion 161,
The diameter of the portion contacting the disc center hole 201 can be substantially the same as that of the disc center hole 201.

As described above, the disk pedestal 161
Recesses 166 that are one step lower than the upper surface of the cradle 160 are provided, and the bases 15 that are connected to the recesses 166, respectively.
6 has an arc-shaped cross section, and a plurality of ribs 151 are respectively raised in an arc shape, so that when the disk case is accidentally dropped during transportation or transportation, a plurality of disk central holes 201 abutted in the case are abutted. Rib 151
Even if a large bending stress is applied to each of the bases 156, the bases 156 are not formed to have a right-angled cross section or an acute angle like the conventional base 154 (FIG. 30). Since it is possible to avoid acting on one point in advance, as a result, excessive stress is not concentrated on each base 156, so that damage to the base 156 can be prevented.

(Second Embodiment) FIG. 5 is a plan view of the vicinity of an engaging portion of a disk case according to a second embodiment of the present invention.
The same components as those described above are designated by the same reference numerals and the description thereof will be omitted. The disk case that is the second embodiment of the present invention has a structure in which the vicinity of the engaging portion is strengthened in order to further strengthen the first embodiment of the present invention against stress. As described below, the first embodiment of the present invention has a notch portion 176 (FIG. 2) having an acute angle portion formed on a part of both left and right side walls of the push button portion.
The cut portion 176) similar to that of No. 9 has an arc-shaped connection 177 instead of the acute angle portion.

Specifically, in the joint portion 143 (FIG. 5) forming a part of the engaging portion 140, the tip portion of the arm 141 is divided into two to form two connecting portions 142, 142. Two
As described above, the two connection parts 142, 142 are connected to the left and right side walls 175, 175 of the push button part 170. Then, the connecting portion 142 and the side wall 17
5. Since the central portion of the cut portion 176 (on the left and right) formed from the joint portion 143 has an arc shape, the cut portion which is not damaged by the impact when the disk case is dropped as described above. 176 can be provided.

Therefore, the acute-angled portion of the cut portion 176 is used as an arc-shaped connection 177 so that the stress due to the separation force is not concentrated at this portion and a place where the fracture is started does not occur. To prevent.

(Third Embodiment) FIG. 6 is a plan view of the vicinity of an engaging portion of a disk case according to a third embodiment of the present invention.
The same components as those described above are designated by the same reference numerals and the description thereof will be omitted. The disk case that is the third embodiment of the present invention has a structure in which the vicinity of the engaging portion is reinforced in order to further strengthen the first embodiment of the present invention against stress. Of the first embodiment of the present invention has an acute-angled cut portion 176 (the cut portion 176 similar to that shown in FIG. 29).
To reinforce (on the left and right),
Alternatively, as another means for reinforcing, as shown in the partial cross-sectional view of the right half of FIG. 6, the wall thickness of the vertical wall vertical surface 171 is slightly increased, and the recessed portion is formed by cutting the thickness of the cut portion 176. Is a notch with a shape that connects a large arc. As a result, the connecting portion 14
The arc 178 on the second side eliminates the acute-angled cut portion 176 in the connection portion 142, so that the concentration of stress on this portion can be avoided.

(Fourth Embodiment) FIG. 7 is a perspective view of the vicinity of an engaging portion of a disk case according to a fourth embodiment of the present invention, and FIG. 8 is a vertical sectional view of the vicinity of the engaging portion. The same components as those described above are designated by the same reference numerals and the description thereof will be omitted.

In the disk case of the fourth embodiment of the present invention, the disk 200 housed and held in the case moves upward in the engaging portion 130 depending on the situation when the case is dropped and impacted. When the pawl 173 is pushed up in this way, the push-up portion 170 receives a force such that the push-button portion 170 is separated from the connection portion 142 by this pushing-up force, and a tensile force acts on the joint portion 143. 143, resulting in joint 14
It is for preventing breakage and damage at 3.

Specifically, as shown in FIG. 7 or FIG. 8, the outer surface 144 of the joint 143 was also connected in an arc shape. By doing so, it is possible to prevent damage due to stress concentration on the joint portion 143 due to the force that pushes up the push button portion 170. The disc case of the present invention is formed by molding using a plastic material such as polypropylene resin.

[0066]

As described above in detail, according to the present invention, even if the case is accidentally dropped during transportation or transportation, each part for holding the disk in the case due to the impact at the time of dropping, for example, a plurality of parts. It is possible to prevent the ribs, the pedestal, the joint between the locking portion (arm) and the push button portion from being damaged, and to always stably hold the disk stored and held in the case. It has a plurality of bases formed at positions where the innermost circumference of the cradle and the outer circumferences of the plurality of ribs are in contact with each other, and each of the plurality of bases has an arcuate planar shape and an arcuate vertical cross-sectional shape. By doing so, even if the impact when the case falls is strongly applied to the plurality of bases,
Since each of the bases has an arcuate longitudinal cross-sectional shape, not a point,
Since the strength of the conventional base is strengthened, breakage damage of each of the bases can be prevented in advance. In addition to the above structure, the pedestal is provided with a plurality of stepped portions that are connected to each of the plurality of bases and have a depth that does not allow the disc held by the pedestal to contact the base. Since the pedestal and the plurality of ribs that are respectively connected to the base portion having higher strength are used, the disk can always be stably held even when the case receives an impact when the case falls. In addition to the configuration, it has a pair of notches formed by the arm and the side wall of the push button portion, and the plane shape of the notches is arcuate, so that breakage of the arm can be prevented. A disk case can be provided.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a disk case that is a first embodiment of the present invention.

FIG. 2 is a perspective view of the vicinity of an engaging portion of the disc case shown in FIG.

FIG. 3 is a perspective view of the vicinity of an engaging portion of the disk case shown in FIG.

FIG. 4 is a vertical cross-sectional view near the engaging portion of the disc case shown in FIG.

FIG. 5 is a plan view of the vicinity of an engaging portion of a disk case that is a second embodiment of the present invention.

FIG. 6 is a plan view of the vicinity of an engaging portion of a disk case that is a third embodiment of the present invention.

FIG. 7 is a perspective view of the vicinity of an engaging portion of a disk case that is a fourth embodiment of the present invention.

8 is a vertical cross-sectional view of the vicinity of the engaging portion of the disk case shown in FIG.

FIG. 9 is a perspective view showing a conventional disc storage case.

FIG. 10 is a perspective view near the engaging portion.

FIG. 11 is a perspective view near the engaging portion.

FIG. 12 is a plan view of an engaging portion.

FIG. 13 is a sectional view of an engaging portion.

FIG. 14 is a diagram for explaining the relationship between the height of the push button portion and the rib.

FIG. 15 is a cross-sectional view showing the relationship between the button-shaped portion, the rib, and the case when the case is deformed.

16 is a partially enlarged view of FIG.

FIG. 17 is a sectional view showing an initial stage of disc storage.

FIG. 18 is a sectional view showing a state in which the disc is being stored.

FIG. 19 is a sectional view showing the end stage of disc storage.

FIG. 20 is an enlarged plan view of the engaging portion showing the position of the notch.

FIG. 21 is a cross-sectional view showing a relationship at the time of starting to take out the disc and a state where the disc is held.

FIG. 22 is a sectional view showing the relationship at the initial stage of disc ejection.

FIG. 23 is a cross-sectional view showing the relationship while the disc is being taken out.

FIG. 24 is a cross-sectional view showing a state when the disc is removed.

FIG. 25 is a sectional view showing the movement of the disc when it receives a drop impact.

FIG. 26 is a cross-sectional view showing the function of a protrusion that suppresses the movement of the disc when it receives a drop impact.

FIG. 27 is a cross-sectional view showing an example of a protrusion shape.

FIG. 28 is an enlarged cross-sectional view showing a gap between the outer peripheral edge of the disc and the inner peripheral wall of the protective rib.

FIG. 29 is an enlarged plan view showing a conventional example of the connection shape of the arm and the push button section.

FIG. 30 is an enlarged cross-sectional view of a conventional engaging portion.

FIG. 31 is an enlarged sectional view showing a conventional example of an engaging portion.

[Explanation of symbols]

10 disk case 16 Side wall 100 cover 110 Plate part 140 Locking part 141 arms 142 Connection 150 ribs 156 base 160 cradle 166 step 170 Push button part 200 the disc 201 central hole

Claims (3)

[Claims] 1. A disc case having a plate portion for detachably holding a disc to be housed in a predetermined position and a cover portion which can be opened and closed with respect to the plate portion, wherein the plate portion is A pedestal that supports the central hole of the disc and holds the disc at a predetermined height, and a pedestal that extends further above the pedestal and that is held in the pedestal in the central hole of the disc. On the other hand, a plurality of ribs that come into contact with each other from the inside of the central hole and a plurality of ribs are provided so as to face the plurality of ribs. A cut is made in a part of the plate part and a part of the plate part is bent upward. Then, a locking portion having an arm elastically extending obliquely above the plate portion is connected to the arm so as to be sandwiched by the tip of the arm, and the disc can be attached to and detached from the pedestal. To In a disk case including a button portion, a plurality of base portions are formed at positions where the innermost circumference of the pedestal and the outer circumferences of the plurality of ribs are in contact with each other, and each of the plurality of base portions is A disk case characterized in that the planar shape is an arc shape and the vertical cross-sectional shape is an arc shape. 2. The pedestal comprises a plurality of stepped portions that are provided in series with each of the plurality of bases and that have a depth such that the disks held by the pedestal do not abut the base. The disk case according to claim 1, wherein: 3. A cutout portion formed by the arm and a side wall of the push button portion, wherein the cutout portion has an arc-shaped planar shape.
The disc case described.