JPH03130027U - - Google Patents
Info
- Publication number
- JPH03130027U JPH03130027U JP3792890U JP3792890U JPH03130027U JP H03130027 U JPH03130027 U JP H03130027U JP 3792890 U JP3792890 U JP 3792890U JP 3792890 U JP3792890 U JP 3792890U JP H03130027 U JPH03130027 U JP H03130027U
- Authority
- JP
- Japan
- Prior art keywords
- tape
- flat portion
- drum
- contact surface
- undercut
- 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
Description
第１図は本考案にかかるドラムアツセンブリの
概略的な正面図、第２図はリード部の形状を示す
拡大断面図、第３図はリード部の他の形状を示す
断面図、第４図は従来のリード部の形状を示す断
面図、第５図並びに第６図は従来のリード部に於
けるテープ走行時のばたつきの状態を示す断面図
である。
図中１はヘツド、２は上ドラム、３は固定ドラ
ム、４はモーターアツセンブリ、５はリード部、
Ａは垂直なテープ接触面、Ｂはアンダーカツト部
、Ｃはフラツト部、Ｄは円弧面、Ｅ１，Ｅ２は盛
上がり部、Ｔはテープである。
Fig. 1 is a schematic front view of the drum assembly according to the present invention, Fig. 2 is an enlarged sectional view showing the shape of the lead part, Fig. 3 is a sectional view showing another shape of the lead part, and Fig. 4. 5 is a cross-sectional view showing the shape of a conventional lead portion, and FIGS. 5 and 6 are cross-sectional views showing the state of flapping in the conventional lead portion when the tape runs. In the figure, 1 is the head, 2 is the upper drum, 3 is the fixed drum, 4 is the motor assembly, 5 is the lead part,
A is a vertical tape contact surface, B is an undercut portion, C is a flat portion, D is an arcuate surface, E1 and E2 are raised portions, and T is the tape.
Claims (1)
並びにモーターアツセンブリ４とによつて組成さ
れ、前記固定ドラム３の周面にテープ送行用のリ
ード部５が設けられているドラムアツセンブリで
あつて、前記リード部５はその断面形状において
、垂直なテープ接触面Ａと、このテープ接触面Ａ
の下端に形成されたアンダーカツト部Ｂと、該ア
ンダーカツト部に連なつて外方に張り出すように
形成されてテープＴの下端面を受けるフラツト部
Ｃと、このフラツト部Ｃの端縁部分に形成された
円弧面Ｄとからなり、 前記フラツト部Ｃの巾ＬはテープＴの厚みより
稍広く設定されていてその両側に盛上がり部分Ｅ
１，Ｅ２が形成されているＶＴＲ，Ｒ−ＤＡＴ等
のドラムアツセンブリ。[Claims for Utility Model Registration] Upper drum 2 with head 1 and fixed drum 3
and a motor assembly 4, and a lead portion 5 for feeding the tape is provided on the circumferential surface of the fixed drum 3, and the lead portion 5 has a vertical cross-sectional shape. This tape contact surface A and this tape contact surface A
An undercut portion B formed at the lower end; a flat portion C extending outwardly from the undercut portion to receive the lower end surface of the tape T; and an edge portion of the flat portion C. The width L of the flat portion C is set to be slightly wider than the thickness of the tape T, and there are raised portions E on both sides of the flat portion C.
1, drum assembly of VTR, R-DAT, etc. in which E2 is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3792890U JPH03130027U (en) | 1990-04-09 | 1990-04-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3792890U JPH03130027U (en) | 1990-04-09 | 1990-04-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03130027U true JPH03130027U (en) | 1991-12-26 |
Family
ID=31545479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3792890U Pending JPH03130027U (en) | 1990-04-09 | 1990-04-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03130027U (en) |
-
1990
- 1990-04-09 JP JP3792890U patent/JPH03130027U/ja active Pending