JPH0246985U - - Google Patents
Info
- Publication number
- JPH0246985U JPH0246985U JP12509188U JP12509188U JPH0246985U JP H0246985 U JPH0246985 U JP H0246985U JP 12509188 U JP12509188 U JP 12509188U JP 12509188 U JP12509188 U JP 12509188U JP H0246985 U JPH0246985 U JP H0246985U
- Authority
- JP
- Japan
- Prior art keywords
- cassette
- gate
- magnetic tape
- submarine gate
- lower half
- 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.)
- Pending
Links
- 239000011347 resin Substances 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 238000000465 moulding Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Description
第１図は本考案を適用したデジタル記録再生方
式の磁気テープカセツトにおける上ハーフケース
１の内面要部を示す平面図、第２図は第１図の斜
視図、第３図は第１図に示す部分をカセツト前面
方向から正面図、第４図は第１図のＡ―Ａ線に沿
つた部分に対応する成形金型の断面図、第５図は
従来の磁気テープカセツトの上ハーフケース内面
を示す平面図、第６図は第５図の上ハーフケース
を成形する際のゲート構造を示す金型の要部断面
図である。
１……ハーフケース、２……位置規制リブ、３
……ケース側壁、４……ケース前面壁、５……カ
セツト前方のボス、６……ゲート跡、７……テー
プ引き出し口、９……カセツト後方のボス、１０
，２０……可動側金型、１１ａ，２１ａ……ゲー
ト切断部、１１，２１……固定側金型、Ｇ……サ
ブマリンゲート、Ｒ……ランナースプール、ＰＬ
……パーテイングライン。
FIG. 1 is a plan view showing the main inner surface of an upper half case 1 in a magnetic tape cassette of a digital recording/reproducing method to which the present invention is applied, FIG. 2 is a perspective view of FIG. 1, and FIG. 3 is the same as FIG. 1. The shown part is a front view from the front side of the cassette, Figure 4 is a cross-sectional view of the molding die corresponding to the part along line A--A in Figure 1, and Figure 5 is the inner surface of the upper half case of a conventional magnetic tape cassette. FIG. 6 is a sectional view of a main part of a mold showing a gate structure when molding the upper half case of FIG. 5. 1...Half case, 2...Position regulating rib, 3
...Case side wall, 4...Case front wall, 5...Boss at the front of the cassette, 6...Gate mark, 7...Tape drawer opening, 9...Boss at the back of the cassette, 10
, 20... Movable side mold, 11a, 21a... Gate cutting part, 11, 21... Fixed side mold, G... Submarine gate, R... Runner spool, PL
...Parting line.
Claims (1)
を構成するための金型空間に、溶融した樹脂をサ
ブマリンゲートを用いて充填してなる磁気テープ
カセツトにおいて、前記サブマリンゲートがカセ
ツト前方のテープ引き出し口の近傍で且つ前記上
下ハーフケースを締結するビス用のボスに設けら
れ、前記サブマリンゲートを形成する金型のゲー
ト切断部のパーテイングラインが段差部を有しな
い平坦構造に構成されたことを特徴とする磁気テ
ープカセツト。 In a magnetic tape cassette in which a mold space for constructing a case body consisting of an assembly of upper and lower half cases is filled with molten resin using a submarine gate, the submarine gate is located near the tape outlet at the front of the cassette. The parting line of the gate cutting portion of the mold that forms the submarine gate and is provided on a boss for a screw that fastens the upper and lower half cases is configured to have a flat structure with no stepped portion. Magnetic tape cassette.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12509188U JPH0246985U (en) | 1988-09-27 | 1988-09-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12509188U JPH0246985U (en) | 1988-09-27 | 1988-09-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0246985U true JPH0246985U (en) | 1990-03-30 |
Family
ID=31375387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12509188U Pending JPH0246985U (en) | 1988-09-27 | 1988-09-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0246985U (en) |
-
1988
- 1988-09-27 JP JP12509188U patent/JPH0246985U/ja active Pending