JPH09188376A - Compact disk fitting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a CD fitting tool which can be easily formed by only one type of mold, can reduce the cost for manufacturing the mold, can provide a support for protecting a CD by only attaching it to a tray which can be manufactured easily. SOLUTION: A CD fitting tool 1 comprises a lower cylinder 3 having a collar 2 protruded at a bottom end and an upper cylinder 4 protruding from a top face 3a. A notch 5 to be connected to the upper cylinder 4 from the lower cylinder 3 is provided at a plurality of places. At each notch 5, a fitting piece 6 which springs out and hangs down from a top face 4a of the upper cylinder 4 is provided. The collar 2 of the lower cylinder 3 sticks to a rear face of a CD housing tray 20 and the top face 3a protrudes from an attaching hole 21a so as to support a CD 10 by that face.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compact disc engaging device which is separate from a tray attached to a hole portion of a tray for storing a compact disc.

[0002]

2. Description of the Related Art Compact discs (hereinafter referred to as CDs)
Is stored in the case while it is held in the CD storage tray. However, in the conventional CD storage tray, the tray portion and the CD engaging tool are integrally molded with a synthetic resin such as plastic, so that a hard tray. There was a risk of scratching the CD by rubbing against the surface. Further, the elasticity of the engaging portion deteriorates when the CD is repeatedly attached and detached for a long period of time, but it is impossible to replace only the engaging portion because it is an integrally molded product.
Further, since the discarded CD storage tray is made of plastic, there is a drawback that environmental pollutants are generated when incinerated.

In order to solve such a problem, the tray portion and the CD engaging member are constructed separately, and the tray portion is a CD.
A method has been proposed in which a material (for example, a paper material) that is hard to damage and does not generate a harmful gas by incineration is selected, and only a portion where elasticity is necessary for holding the CD, that is, only the engaging tool is made of plastic.

As shown in FIGS. 5 and 6, this conventional CD engaging device has a structure in which a male member 110 and a female member 120 are separated from each other. The male member 110 has a large diameter cylindrical upper part 111 and a small diameter cylindrical lower part. 112, and a plurality of engaging pieces 113 are formed on the outer periphery of the cylindrical body upper portion 111, the tip end of which is hung down while protruding,
It was a molded product in which an annular projection 114 was projected on the outer periphery of the lower end of the lower cylinder body 112. Further, the female member 120 has a cylindrical portion 121 to be inserted into the mounting hole of the CD storage tray and a flange portion 122 that comes into close contact with the back surface of the tray. Inside the cylindrical portion 121, a ring-shaped protruding edge portion 123 and a lower portion thereof are provided. The ring-shaped notch portion 124 is provided in.

On the other hand, the tray 200 to which the CD engaging device 100 is attached has a construction in which a bottom material 210, an intermediate material 220 and a surface material 230 are polymerized by an adhesive or the like, as shown in FIG.
The bottom material 210 and the intermediate material 220 have mounting holes 211 and 221.
And a CD housing groove 231 having a size for housing the CD 300 was provided on the surface material 230. The material of the plate material to be polymerized is appropriately selected according to the purpose of use,
Since the intermediate material 220 is a member that comes into direct contact with the recording surface of the CD 300, a flexible material that suppresses the generation of static electricity has been selected. Further, there is also a tray of a system in which an annular plate material is attached to the periphery of the mounting hole of the bottom material instead of the intermediate material to hold the CD, and a gap is provided between the CD and the bottom material.

When the CD engaging member 100 is attached to the tray 200, first, the female member 12 is inserted from the lower surface of the tray 200.
The projection 11 of the male member 110 which is inserted from the top
4 was press-fitted and connected to the notch 124 of the female member 120. The engaging piece 113 is the central hole 3 of the CD 300.
CD30 by elastically deforming into 10 and frictional force of both sides
It was configured to hold 0.

[0007]

However, since the conventional CD engaging device 100 has a structure for connecting two molded products,
Two molds must be manufactured, and the mold of the male member 110 having an undercut has a drawback that the manufacturing cost is high. Further, in order to protect the CD 300, the tray 200 to which the conventional CD engaging device 100 is attached is provided with an intermediate material 220 made of a flexible material, or an annular plate material is attached around the attachment hole of the bottom material to form a CD. It was necessary to provide a space between the base material and the bottom material, but this structure had the drawback of increasing the number of members and working steps.

The present invention solves the above problems, requires only one type of mold, can be manufactured easily and can reduce the manufacturing cost, and a supporting portion for protecting a CD can be provided only by attaching it to a tray. It is another object of the present invention to provide a CD engagement tool which is easy to manufacture a tray.

[0009]

In order to solve the above-mentioned problems, a CD engaging device of the present invention is a cylindrical body in which a cylindrical portion is inserted into a mounting hole of a CD storage tray and a flange portion is closely attached to the back surface of the tray.
In a CD engagement tool having a plurality of engaging pieces fitted in the central hole of a CD at the upper part of the cylindrical body, the cylindrical body is a lower cylinder having a diameter larger than the central hole and protruding to the tray surface. And a multi-stage cylindrical body having an upper cylinder protruding from the upper surface of the lower cylinder and having a diameter smaller than the central hole and having a plurality of notches connected to the side surface of the upper cylinder from the upper surface of the lower cylinder, wherein the engagement piece is It is characterized in that the engaging piece is integrally formed with the cylindrical body that is located at the cutout portion and that bulges out and hangs from the upper surface of the upper cylinder.

When the CD engaging tool is attached to the tray, the upper surface of the lower cylinder projects to the surface of the tray, and the CD is supported by this surface. Since the upper cylinder supports the reaction force of the elastically deformable engagement piece by the side surface member via the upper surface member, the number of notches is determined in consideration of the reaction force, but at least three positions are required. .

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. 1 is a plan view of a CD engaging member of the present invention, FIG. 2 is a sectional view showing a II-II section of FIG. 1,
3 is a plan view of the CD storage tray to which the CD engaging tool is attached, and FIG. 4 is a cross-sectional view showing the IV-IV cross section of FIG. CD
The engagement tool 1 is a multi-stage cylindrical body, and includes a lower cylinder 3 having a lower end portion provided with a flange 2 and an upper cylinder 4 protruding from an upper surface 3 a of the lower cylinder 3.

Further, from the upper surface 3a of the lower cylinder 3 to the upper cylinder 4
A plurality of cutouts 5 connected to the side surface 4b of the upper cylinder 4 of the cutout 5 from the upper surface 4a of the upper cylinder 4
An engaging piece 6 is provided which bulges outward from b and inclines slightly outward. The engagement piece 6 has such a size that it can be accommodated in the cutout portion 5 on a plane, and has an outer diameter and an inclination angle that press-contact with the central hole 11 of the CD 10 to be inserted from above by elastic deformation.

In order to realize such elastic deformation, the CD engagement tool 1 is made of a synthetic resin material such as ABS resin. Since this CD engaging tool 1 is a single component, only one type of mold is required, and since it is a molded product without undercut, the mold can be easily manufactured.

The CD accommodating tray 20 to which the CD engaging tool 1 is attached has a construction in which a bottom material 21 and a surface material 22 are polymerized by an adhesive agent or the like, and the bottom material 21 has an inner diameter substantially equal to the outer diameter of the lower cylinder 3. The mounting hole 21a of the
A CD storage groove 22a having a size slightly larger than the outer diameter of the CD storage groove 22a and an extraction hole 22b provided at an appropriate number of positions outside the CD storage groove 22a are provided. The flange portion 2 that is locked to the back surface of the bottom material 21 is closely held by a sheet material 23 attached to the outside thereof.
Since various kinds of printing can be easily performed on the CD, the usage of the CD storage tray 20 is expanded.

The collar portion can be directly adhered to the bottom material with an adhesive or the like, and the CD storage tray has a CD storage groove, a mounting hole and an ejection hole by pressing and punching a single plate material. It can also be formed.

As shown in FIG. 4, since the upper surface 3a of the lower cylinder 3 projects from the surface of the bottom material 21 and supports the CD 10 on this surface, the recording surface of the CD 10 should be in direct contact with the bottom material 21. There is no. Further, the height H of this hanging portion is set to be at least equal to the thickness of the CD 10 so that the hanging portion of the engaging piece 6 can be brought into close contact with the central hole 11 by elastic deformation. Further, since the reaction force when the CD 10 is inserted is supported by the upper cylinder 4, the number of the engaging pieces 6 is determined so that the area of the notch 5 does not become excessive.

[0017]

As described above, the CD engaging device of the present invention has a cylindrical body and a CD to be inserted into the mounting holes of the CD storage tray.
Since a plurality of engaging pieces that fit into the central hole of is formed as an integrally molded product, only one type of mold is required, and since the engaging pieces are provided in the notches formed in the multi-stage cylinder, there is no undercut It becomes a product and the mold can be easily manufactured. As a result, it is possible to significantly reduce the manufacturing cost for manufacturing the mold.

Further, since the lower cylinder is formed so as to have a diameter larger than that of the central hole and to project to the surface of the tray, the upper surface of the lower cylinder supports the CD and the recording surface does not directly contact the tray. Therefore, when the tray is manufactured, it is not necessary to specially form the support portion for protecting the CD, and the tray can be easily manufactured.

[Brief description of the drawings]

FIG. 1 is a plan view of a CD engagement tool.

FIG. 2 is a sectional view showing a II-II section in FIG. 1;

FIG. 3 is a plan view of a CD storage tray to which a CD engagement tool is attached.

FIG. 4 is a sectional view showing a section taken along line IV-IV in FIG.

FIG. 5 is a front view of a conventional CD engagement tool.

FIG. 6 is a cross-sectional view of a conventional CD engagement tool.

FIG. 7 is a cross-sectional view of a CD storage tray to which a conventional CD engagement tool is attached.

[Explanation of symbols]

 1 CD Engagement Tool 2 Collar Part 3 Lower Cylinder 3a Upper Surface 4 Upper Cylinder 4a Upper Surface 4b Side 5 Cutout 6 Engaging Piece 10 CD 11 Center Hole 20 CD Storage Tray 21a Mounting Hole

Claims (1)

[Claims] 1. A cylindrical body in which a cylindrical portion is inserted into a mounting hole of a compact disc storage tray and a flange portion is closely attached to the back surface of the tray.
In a compact disc engaging device provided with a plurality of engaging pieces fitted in a central hole of a compact disc at an upper portion of the tubular body, the tubular body has a diameter larger than the central hole and protruding to a tray surface. A multi-stage cylindrical body having a lower cylinder and an upper cylinder projecting from the upper surface of the lower cylinder and having a diameter smaller than that of the central hole, and providing a plurality of notches connecting from the upper surface of the lower cylinder to the side surface of the upper cylinder, wherein the engaging piece is A compact disc engagement tool, which is an engagement piece in the cutout portion, which is protruded and hung from the upper surface of the upper cylinder.