JP2005271925A - Disk fixing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk fixing device which has a locking structure in which a disk is not unlocked only by pressing the structure, reliably maintains the disk locked state, easily takes out the disk when necessary, has a simple structure and is manufactured at low cost. <P>SOLUTION: A plurality of elastic locking pieces 5, 5... erected from the circumferential edge of a center hole 3 formed inside an annular rib 2 are separated by cutouts 4, 4... reaching the annular rib. Each elastic locking piece has elastic supporting pieces 8, 8... reaching the vicinity of the annular rib, and each elastic locking piece is formed in an independently and elastically deformable manner from the vicinity of the annular rib. The upper end of each elastic locking piece has a folded part 9 folded toward the center, and tips on the center side of each folding part are brought close to each other with a space 20 of a predetermined value, and claws 7, 7... are protruded in the middle of the outer side of each elastic locking piece. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a disk fixing device for fixing a central hole formed in a disk such as a CD or a DVD in a storage case.

  When storing a disk such as a CD or a DVD, the disk is generally stored in a storage case at the time of purchase. As shown in FIG. 9, this storage case is formed by forming a boss 32 at the center of a tray 31 stored inside a plastic case (not shown). In the circular boss 32, a large number of claws 33, 33,... Protrude from the center surface of the tray 31 with a gap therebetween, and each claw 33 is bent at the upper end in the central direction, and the central portion has a gap 34. Each of the claws 33, 33... Can be elastically deformed.

  The outer diameter of the boss 32 is slightly larger than the center hole of the disk. Therefore, when the center hole of the disk is pushed down to the boss 32, the claws 33, 33... Of the boss 32 are slightly bent inward to lock the center hole of the disk.

  However, in such a locked state, there has been a problem that the center hole of the disk is easily detached from the outer periphery of the boss 32 when the storage case is deformed by external pressure.

  In order to solve this problem, for example, an apparatus listed in Patent Document 1 has been proposed. This apparatus relates to a hole holder for holding a hole C formed at the center of a CD as shown in FIG.

  The structure is such that a circular upper plate 36 is formed at the center of the upper surface of the plastic plate 35, a circular central protrusion 37 is formed at the center of the upper plate 36, and a plurality of peripheral protrusions are formed around it. A portion 38 is formed, and a thick portion 40 is formed on the outer peripheral upper end of each peripheral protrusion 38.

  A spring 39 made of urethane material is filled between the upper plate 36 and the central protrusion 37 and the plurality of peripheral protrusions 38 to ensure elasticity of the central protrusion 37 and the peripheral protrusions 38. I am doing so.

  In order to insert the hole C of the CD into the hole holder having such a configuration, as shown in FIG. 10A, the hole C of the CD is pushed by fitting the hole C of the CD into the outer periphery of the peripheral protrusion 38 and pushing it down. C is in a state of being locked to each thick portion 40.

Further, in order to take out the CD fitted in this way, as shown in FIG. 10B, when the central protrusion 37 is pushed down with a fingertip, the upper plate 36 bends downward to cause the central protrusion 37 and the plurality of peripherals. The outer periphery of the protrusions 38, 38... Is deformed so as to shrink toward the center, and as a result, the hole C of the CD is in a state of being out of the entire periphery of the peripheral protrusions 38, 38.
Japanese Patent Laid-Open No. 2-205589 (first and second pages, FIGS. 3 and 4)

  In any of the above-described configurations, the hole (center hole) of the CD is fitted into the outer periphery of the boss or the plurality of peripheral protrusions to be in a locked state. In any configuration, the boss or the peripheral protrusion is used. The locking structure is flexible, and the disk is removed by pushing down the locking structure with a fingertip.

  However, the structure in which the disk is removed by having such flexibility has a problem in preventing theft. That is, in a store or the like, a disc is stored inside the disc case in a locked state as described above, and the outside of the disc case is displayed in a state of being wrapped with transparent vinyl or the like. In such a stowed state, as a new type of theft, the disc is removed by pushing the inner locking structure through the lid by pushing the center from the outside of the lid surface of the disc case. In addition, a cutter is applied to the gap between the lids of the disc case to open the opening of the transparent vinyl, and the disc that has come off inside is extracted from the gap.

  As described above, the type in which the disc is detached by pressing the disc locking structure may be the subject of theft by the above means. The disk must be structured so that it cannot be removed.

  Further, in the above conventional structure, the structure shown in FIG. 9 is a combination of a case body and a tray, and the structures shown in FIGS. The peripheral protrusion forming member and the spring made of urethane material are separate bodies, and each has a step of molding and joining each member, resulting in a problem of labor and cost of production. .

  The present invention has been made to solve such problems, and has a locking structure in which the disk cannot be removed simply by pressing the holding part, and the disk is securely held and taken out. It is an object of the present invention to provide a disk fixing device that can be easily removed when there is, and that can be manufactured at a low cost with a simple structure.

  In order to achieve the above object, according to claim 1 of the present invention, an annular rib having a predetermined height is provided on the inner surface of a disc storage case, and a central hole formed in the annular rib is provided. A plurality of elastic locking pieces standing on the surface with a gap in the periphery are separated by notches reaching the vicinity of the annular rib, so that each elastic locking piece reaches the vicinity of the annular rib. By having the pieces, the respective elastic locking pieces are formed so as to be elastically deformable independently from the vicinity of the annular rib, and these elastic locking pieces are circularly inserted into the center hole of the disc as a whole. A holding portion is formed, and the upper ends of the respective elastic locking pieces have bent portions that are bent toward the center, and the front ends of the respective bent portions approach each other with a predetermined gap therebetween. On the other hand, a claw protrudes in the middle of the outside of each elastic locking piece. When the center hole of the disk is pushed into the outer periphery of the holding part, the inner peripheral edge of the center hole of the disk gets over the respective claws while deforming the respective elastic locking pieces, and When the centers of the holding portions are pressed, the center-side tips of the respective bent portions abut against each other, thereby restricting the deformation of the respective elastic locking pieces, so that the disks locked to the respective claws are It is characterized by preventing it from coming off.

  Further, according to a second aspect of the present invention, in the first aspect, the elastic locking piece is composed of three pieces, and the center side tip of the bent portion of each elastic locking piece has a central angle approximately equal to the third angle. It has a hypotenuse formed by a corner to be divided.

  Further, according to a third aspect of the present invention, in the first or second aspect, the outer periphery of the disk inserted into the holding portion is arranged on the inner surface of the storage case and spaced apart from the holding portion by a predetermined distance. An annular rim to be supported is formed, and at least one portion of the annular rim has a space as a portion where a fingertip is applied to the lower outer periphery of the disk.

  According to the invention configured as described above, each elastic locking piece has an elastic support piece that reaches the vicinity of the annular rib by being separated by a notch reaching the vicinity of the annular rib. Accordingly, each elastic locking piece is formed so as to be elastically deformable independently from the vicinity of the annular rib. Therefore, the flexibility of each elastic locking piece is improved, and each elastic locking piece is deformed. It can be set as the structure which prevents breakage.

  Also, when the disc center hole is inserted into the outer periphery of the holding portion, the inner peripheral edge of the disc center hole gets over the respective claws while being deformed by the respective elastic locking pieces, so that it is locked. The attached disc is locked by the respective claws and is difficult to be detached.

  Further, since the center-side ends of the bent portions of the respective elastic locking pieces are close to each other with a predetermined gap therebetween, when the center of the holding portion is pressed with the fingertip, By restricting the deformation of the respective elastic locking pieces by the tips on the center side of the parts coming into contact with each other, it is possible to make a structure in which the disk locked to each claw cannot be removed.

  Furthermore, as described above, by restricting the deformation of each elastic locking piece, it is possible to prevent each elastic locking piece from being broken as a structure in which each elastic locking piece does not deform more than necessary. It becomes.

  Embodiments of the present invention will be described below with reference to the drawings.

  As shown in FIG. 1, a storage case 10 for a disc D such as a CD or a DVD in this embodiment has a rectangular bottom plate 11 and a cover plate 12 having a back plate frame 13 on one side of the long side to open and close. A storage case that is formed freely and has an outer peripheral frame 14 formed on each of three sides of the bottom plate 11 and the cover plate 12, and can be opened and closed by closing the bottom plate 11 and the cover plate 12. 10 is configured.

  In addition, two clamping pieces 15 and 15 are formed in the inner side edge part of the cover board 12, and a manual etc. can be pinched | interposed into these clamping pieces 15 and 15. FIG.

  An annular rib 2 having a predetermined height is formed on the inner surface on the bottom plate 11 side of the storage case 10 configured as described above, as shown in FIG. The annular rib 2 has, for example, an annular protrusion shape having a height of 2 to 3 mm and a diameter of about 25 mm, and a center hole C of the disk D is inserted into the outer periphery of the holding portion described later. At this time, one side of the disk D is supported while being separated from the surface of the bottom plate 11 (see FIG. 7C).

  As shown in FIG. 4, a central hole 3 is formed at the center of the annular rib 2, and a plurality of elastic locking pieces 5 that stand on the surface with a space around the periphery of the central hole 3. .. Are formed, and the plurality of elastic locking pieces 5, 5... Form a circular holding portion 6 as a whole, whereby a disk D is formed on the outer periphery of the holding portion 6 as shown in FIG. The center hole C can be inserted.

  As shown in FIG. 2, the respective elastic locking pieces 5, 5... Are separated by notches 4 that reach the vicinity of the annular rib 2, and the respective elastic locking pieces 5, 5. By having the elastic support piece 8 that reaches the vicinity of the annular rib 2, the respective elastic locking pieces 5, 5... Can be elastically deformed independently from the vicinity of the annular rib 2.

  That is, when each elastic locking piece 5 is deformed, it is bent integrally with each elastic support piece 8, and the flexibility of each elastic locking piece 5, 5. The elastic locking piece 5 is bent from the vicinity of the annular rib 2 together with the elastic support piece 8 instead of from the standing part, and the flexibility of deformation of the elastic locking pieces 5, 5... Can be improved. It becomes possible to make each elastic locking piece 5 into a structure which is hard to break.

  Further, as shown in FIG. 4, the upper ends of the respective elastic locking pieces 5, 5... Have bent portions 9 that are bent toward the center, and the center sides of the respective bent portions 9, 9. The tips are configured to approach each other with a gap 20 having a predetermined gap G therebetween.

  In this embodiment, the elastic locking pieces 5, 5,... Are composed of three pieces, and the center side tips of the bent portions 9, 9 ... of the elastic locking pieces 5, 5,. It is set as the structure which has the hypotenuses 9a and 9a formed by the angle | corner to do.

  As shown in FIG. 2 or 4, claws 7, 7... Project in the middle of the outer sides of the respective elastic locking pieces 5, 5, and the center hole C of the disk D is placed on the outer periphery of the holding portion 6. When pushing in, the inner peripheral edge of the center hole C of the disk D is engaged with each of the claws 7, 7.

  In such a configuration, the center-side tips of the bent portions 9, 9... Of the respective elastic locking pieces 5, 5... Approach each other with a gap 20 of a predetermined gap G (see FIG. 4). The reason is as follows. That is, as shown in FIG. 5 (in this figure, the normal state of the holding unit 6 is reversed), each bending is performed when the center of the holding unit 6 is pressed with a fingertip or the like. The front ends of the center portions 9, 9... Are in contact with each other to restrict deformation of the respective elastic locking pieces 5, 5. This is to prevent it from occurring. For this purpose, the predetermined gap G (see FIG. 4) is preferably a gap 20 of about 1 mm.

  In addition, by restricting the deformation of the respective elastic locking pieces 5, 5,..., The elastic locking pieces 5, 5,. Breakage of 5 ... can be prevented.

  Further, in the present embodiment, as shown in FIG. 2 or FIG. 3, the disk D inserted into the holding portion 6 on the inner surface of the storage case 10 and spaced from the holding portion 6 by a predetermined distance. An annular rim 21 that supports the outer periphery is formed.

  As shown in FIGS. 7A to 7C, the annular rim 21 has a shape having a low step portion 22 on the inner side, and supports the outer periphery of the disk D inserted into the holding portion 6 in the step portion 22. can do. The annular rim 21 is preferably sized to accommodate a 120 mm diameter CD or DVD.

  As shown in FIG. 6, when a mini-disc MD or single disc SD having a smaller diameter than the compact disc D is accommodated, the outer periphery of the disc D does not reach the step 22 of the annular rim 21 and supports the lower surface of the outer periphery. However, as in the case of the disk D, the center hole C of the mini disk MD or single disk SD is inserted into the outer periphery of the holding portion 6 so that it is supported on the upper end of the annular rib 2 and each elastic engagement. The fixed state locked by the claws 7, 7 ... of the stop pieces 5, 5 ... can be maintained.

  Further, as shown in FIG. 1 to FIG. 3, by forming a void 23 as a part where the fingertip is applied to the lower part of the outer periphery of the disk D in at least one place of the annular rim 21 as shown in FIG. In addition, when the disk D inserted into the holding unit 6 is taken out, the disk D can be easily taken out by pulling the disk D from the space 23 with a finger applied to the outer periphery. In addition, although the two cavities 23 are formed in the opposing position in the annular rim 21 shown in FIGS. 1 to 3, one of them may be used.

  In order to place the disk D on the disk fixing device 1 configured as described above, the center hole C of the disk D is placed as shown in FIG. At this time, the center hole C of the disk D is engaged with the claws 7, 7... Of the respective elastic locking pieces 5, 5.

  Next, as shown in FIG. 7B, when the upper surface in the vicinity of the center hole C of the disk D is pushed downward with a finger, the inner peripheral edge of the center hole C of the disk D becomes the respective elastic locking pieces 5, 5. ... Are deformed in the center direction, and the respective claws 7, 7. At this time, as shown in FIG. 7C, the center hole C of the disk D is supported by the upper end of the annular rib 2 and locked under the claws 7, 7.

  Further, when the disk D fixed to the disk fixing device as described above is removed, as shown in FIG. 8A, the holder 6 is supported by, for example, the thumb, and the index finger is moved from the space 23 of the annular rim 21 to the disk. When pulled up against the outer peripheral edge of D, as shown in FIG. 8 (b), the center hole C of the disk D is detached from the respective claws 7, 7 ... of the elastic locking pieces 5, 5 ....

  The overall shape of the storage case 10 including the holding portion 6 having the plurality of elastic locking pieces 5, 5... Configured as described above can be formed by a single molding by a synthetic resin molding process such as polypropylene. This is beneficial for reducing manufacturing costs.

  In the above configuration, the holding portion 6 including the annular rib 2 and the plurality of elastic locking pieces 5, 5... Is provided at the inner center of the bottom plate 11. Is provided in the center of the inner side of the cover plate 12, so that two disks D can be inserted and stored inside one storage case 10.

  The present invention has a locking structure in which the disc cannot be removed simply by pressing the holding portion, and can securely hold the disc in a locked state, and can be easily removed when it is necessary to remove the holding portion. It can be used as a disk fixing device having a structure in which the elastic locking piece is not easily broken.

It is an inner side perspective view of the storage case which has the disc fixing apparatus by this invention. It is a top view of the baseplate side inner surface of the storage case by this invention. It is the top view which inserted the center hole of the disk in the holding | maintenance part by this invention. It is a perspective view which shows the annular rib and holding | maintenance part of the disc fixing apparatus by this invention. It is principal part sectional drawing which shows the condition which attaches the disk to the disk fixing device by this invention, and is pressing the holding | maintenance part. It is principal part sectional drawing which shows the condition which inserted the small diameter disc in the disc fixing apparatus by this invention. (A)-(c) is principal part sectional drawing which shows the condition which has inserted the disk in the disk fixing device by this invention. (a) And (b) is principal part sectional drawing which shows the condition which has removed the disk from the disk fixing device by this invention. It is an inner side perspective view of the disk fixing device of the conventional apparatus. (A) And (b) is principal part sectional drawing of the apparatus of patent document 1. FIG.

Explanation of symbols

D ... disk C ... center hole 1 ... disk fixing device 2 ... annular rib 3 ... center hole 4 ... notch 5 ... elastic locking piece 6 ... holding part 7 ... claw 8 ... elastic support piece 9 ... bent part 9a ... hypotenuse 10 ... Storage case 11 ... Bottom plate 12 ... Cover plate 13 ... Back plate frame 14 ... Outer frame 15 ... Nipping piece 20 ... Gap 21 ... Ring rim 22 ... Step part 23 ... Void

Claims (3)

A plurality of elastic members are provided with an annular rib having a predetermined height on the inner side surface of the disk storage case, and standing on the surface with a space around the periphery of a central hole formed in the annular rib. Each elastic locking piece has an elastic support piece that reaches the vicinity of the annular rib as a result of the stop piece being separated by a notch reaching the vicinity of the annular rib. It is formed to be elastically deformable independently from the vicinity, and these elastic locking pieces form a circular holding portion that is inserted into the center hole of the disc as a whole, and the upper ends of the respective elastic locking pieces are in the center. While having bent portions that are bent toward each other, the tips on the center side of each bent portion approach each other with a gap of a predetermined interval, while a claw projects in the middle of the outside of each elastic locking piece The center hole of the disc is pushed to the outer periphery of the holding portion. When indenting, the inner peripheral edge of the center hole of the disk is in a locked state over the respective claws while deforming the respective elastic locking pieces, and when the center of the holding portion is pressed, A disc fixing device characterized in that the discs locked to the respective claws are prevented from coming off by restricting deformation of the respective elastic locking pieces by causing the center side tips to contact each other. The elastic locking piece is composed of three pieces, and the front end of the bent portion of each elastic locking piece has a hypotenuse formed by an angle that divides the central angle into approximately three equal parts. The disk fixing device according to claim 1. An annular rim that supports the outer periphery of the disk inserted into the holding portion is formed on the inner surface of the storage case and spaced apart from the holding portion by a predetermined distance, and at least one portion of the annular rim is formed. 3. The disk fixing device according to claim 1, wherein a space is provided as a part where a fingertip is applied to a lower peripheral portion of the disk.

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