JPH02128267U - - Google Patents
Info
- Publication number
- JPH02128267U JPH02128267U JP3671989U JP3671989U JPH02128267U JP H02128267 U JPH02128267 U JP H02128267U JP 3671989 U JP3671989 U JP 3671989U JP 3671989 U JP3671989 U JP 3671989U JP H02128267 U JPH02128267 U JP H02128267U
- Authority
- JP
- Japan
- Prior art keywords
- rough
- rough surface
- glossy
- recording medium
- forming
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000465 moulding Methods 0.000 claims description 6
- 238000003754 machining Methods 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 2
- 238000009760 electrical discharge machining Methods 0.000 description 1
Description
第１図は本考案を適用したオーデイオテープカ
ートリツジの一実施例を示す斜視図であり、その
ａは全体の外観を示す概略図、ｂはその一部を詳
細に示す部分拡大図である。第２図は第１図ａに
示したカートリツジを多方面から見た図であり、
そのａは平面図、ｂは正面図、ｃは背面図、及び
ｄは右側面図である。第３図は第２図ｂに示した
上ハーフの拡大断面図であり、そのａはＡ−Ａ線
断面図、ｂはＢ−Ｂ線断面図である。第４図は第
３図ｂに示した上ハーフの一部を成形する金型の
一部成形面に対する放電加工の過程を示す断面図
である。第５図は従来のオーデイオテープカート
リツジの一部を詳細に示す斜視図である。第６図
は同カートリツジにおける上ハーフの部分拡大断
面図であり、そのａはコーナー部に小さな半径の
曲面を設けた図、ｂはコーナー部に大きな半径の
曲面を設けた図である。第７図は第６図ａに示し
た上ハーフの一部を成形する金型の一部成形面に
対する放電加工の過程を示す断面図である。
４６……オーデイオテープカートリツジ、４８
……ケース、５０，５２……上下ハーフ、５４…
…記録媒体、５６，５８……ハブ、６０……基板
、８４，１０８……粗面、８６，１１４……光沢
面、８８，１１２……段部、１０２……金型、１
０４……成形面。
FIG. 1 is a perspective view showing an embodiment of an audio tape cartridge to which the present invention is applied, in which a is a schematic view showing the overall appearance, and b is a partially enlarged view showing a part thereof in detail. FIG. 2 is a view of the cartridge shown in FIG. 1a from various angles.
A is a plan view, b is a front view, c is a rear view, and d is a right side view. FIG. 3 is an enlarged sectional view of the upper half shown in FIG. 2b, in which a is a sectional view taken along the line A--A and b is a sectional view taken along the line B--B. FIG. 4 is a sectional view showing the process of electrical discharge machining on a partial molding surface of the mold for molding a portion of the upper half shown in FIG. 3b. FIG. 5 is a detailed perspective view of a portion of a conventional audio tape cartridge. FIG. 6 is a partially enlarged cross-sectional view of the upper half of the same cartridge, in which "a" shows a curved surface with a small radius at the corner, and "b" shows a curved surface with a large radius at the corner. FIG. 7 is a sectional view showing the process of electric discharge machining on a partial molding surface of a mold for molding a portion of the upper half shown in FIG. 6a. 46...Audio tape cartridge, 48
... Case, 50, 52 ... Upper and lower half, 54 ...
... Recording medium, 56, 58 ... Hub, 60 ... Substrate, 84, 108 ... Rough surface, 86, 114 ... Glossy surface, 88, 112 ... Step portion, 102 ... Mold, 1
04...molding surface.
Claims (1)
出する側板とを備え、そこに存在するコーナー部
の外面を曲面に成形して粗面にし、その粗面と隣
接する光沢面を外面に有するハーフを、少なくと
も一方に用いて上下ハーフを組み合せたケース内
に、記録媒体を収納して成る記録媒体用カートリ
ツジにおいて、上記粗面と光沢面との境界線に段
部を設け、粗面より光沢面を突出させることを特
徴とする記録媒体用カートリツジ。 (2) 上記粗面がしぼ面であることを特徴とする
第１項記載の記録媒体用カートリツジ。 (3) ハーフの外面を成形する面を有し、その成
形面には、ハーフのコーナー部を曲面に成形する
面を放電加工により粗面に形成し、その粗面と隣
接する光沢面を備えて成るハーフ成形金型におい
て、上記粗面と光沢面との境界線に段部を設け、
粗面より光沢面を後退させることを特徴とするハ
ーフ成形金型。[Claims for Utility Model Registration] (1) A rectangular substrate and a side plate protruding vertically from its periphery, the outer surface of the corner portion thereof being formed into a curved surface to make it a rough surface, and the rough surface. In a cartridge for a recording medium, in which a recording medium is housed in a case in which an upper and lower halves are combined using a half having a glossy surface adjacent to the rough surface on the outer surface on at least one side, a boundary line between the rough surface and the glossy surface is used. A recording medium cartridge characterized by having a stepped portion so that a glossy surface protrudes from a rough surface. (2) The recording medium cartridge according to item 1, wherein the rough surface is a grained surface. (3) It has a surface for forming the outer surface of the half, and the forming surface has a surface for forming the corner part of the half into a curved surface formed into a rough surface by electric discharge machining, and a glossy surface adjacent to the rough surface. In the half-molding mold consisting of
A half-forming mold characterized by a glossy surface set back from a rough surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3671989U JPH0713101Y2 (en) | 1989-03-30 | 1989-03-30 | Recording medium cartridge and half mold for the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3671989U JPH0713101Y2 (en) | 1989-03-30 | 1989-03-30 | Recording medium cartridge and half mold for the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02128267U true JPH02128267U (en) | 1990-10-23 |
| JPH0713101Y2 JPH0713101Y2 (en) | 1995-03-29 |
Family
ID=31543195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3671989U Expired - Fee Related JPH0713101Y2 (en) | 1989-03-30 | 1989-03-30 | Recording medium cartridge and half mold for the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0713101Y2 (en) |
-
1989
- 1989-03-30 JP JP3671989U patent/JPH0713101Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0713101Y2 (en) | 1995-03-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |