JPH01121141U - - Google Patents
Info
- Publication number
- JPH01121141U JPH01121141U JP20078887U JP20078887U JPH01121141U JP H01121141 U JPH01121141 U JP H01121141U JP 20078887 U JP20078887 U JP 20078887U JP 20078887 U JP20078887 U JP 20078887U JP H01121141 U JPH01121141 U JP H01121141U
- Authority
- JP
- Japan
- Prior art keywords
- head
- drum
- head assembly
- rotary
- motor
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Description
第１図は本考案の回転ヘツドアセンブリの一実
施例を示す外観斜視図、第２図および第３図は上
ドラムを外した状態の平面図、第４図は回転ヘツ
ドアセンブリの詳細図、第５図は他の実施例を示
す外観斜視図、第６図および第７図は従来の回転
ヘツドアセンブリにおけるモータ部の構成図であ
る。
１……回転ヘツドアセンブリ、２……テープ巻
付ドラム、２Ａ……上ドラム、２Ｂ……下ドラム
、３……ヘツド通行孔、４……フランジ部、５ａ
，５ｂ……固定部、６……テープ押し、７……ヘ
ツド回転板、８……磁気ヘツド、９……モータ軸
、１０……マグネツト、１１……検出素子、１２
……マグネツト。
FIG. 1 is an external perspective view showing one embodiment of the rotary head assembly of the present invention, FIGS. 2 and 3 are plan views with the upper drum removed, and FIG. 4 is a detailed view of the rotary head assembly. FIG. 5 is an external perspective view showing another embodiment, and FIGS. 6 and 7 are configuration diagrams of a motor section in a conventional rotary head assembly. DESCRIPTION OF SYMBOLS 1... Rotating head assembly, 2... Tape winding drum, 2A... Upper drum, 2B... Lower drum, 3... Head passage hole, 4... Flange portion, 5a
, 5b... Fixed part, 6... Tape pusher, 7... Head rotating plate, 8... Magnetic head, 9... Motor shaft, 10... Magnet, 11... Detection element, 12
...Magnet.
Claims (1)
ツド通行孔を有したテープ走行面が形成されると
共に、前記上下ドラムの内部に配置されてモータ
により回転するヘツド回転板の磁気ヘツドが前記
ヘツド通行孔から露出するようにした回転ヘツド
アセンブリにおいて、前記上ドラムもしくは下ド
ラムの前記テープ走行面の背面部分に前記モータ
の回転位相を検出可能とした磁気検出手段を設け
たことを特徴とする回転ヘツドアセンブリ。 (2) 磁気検出手段は、マグネツト、固定ヘツド
もしくはコイルである実用新案登録請求の範囲第
１項記載の回転ヘツドアセンブリ。[Claims for Utility Model Registration] (1) A tape running surface having a head passage hole is formed when the upper drum and the lower drum are combined, and is arranged inside the upper and lower drums and rotated by a motor. In a rotary head assembly in which a magnetic head of a head rotary plate is exposed through the head passage hole, a magnetic detection means is provided on a rear surface of the tape running surface of the upper drum or the lower drum and is capable of detecting the rotational phase of the motor. A rotary head assembly characterized in that it is provided with: (2) The rotating head assembly according to claim 1, wherein the magnetic detection means is a magnet, a fixed head, or a coil.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20078887U JPH01121141U (en) | 1987-12-28 | 1987-12-28 | |
| US07/177,587 US4939606A (en) | 1987-04-13 | 1988-04-05 | Rotary head assembly for digital audio tape recorders |
| DE3812283A DE3812283A1 (en) | 1987-04-13 | 1988-04-13 | TURNING HEAD FOR DIGITAL MAGNETIC TAPE RECORDING DEVICES |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20078887U JPH01121141U (en) | 1987-12-28 | 1987-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01121141U true JPH01121141U (en) | 1989-08-16 |
Family
ID=31491177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20078887U Pending JPH01121141U (en) | 1987-04-13 | 1987-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01121141U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62229562A (en) * | 1986-03-29 | 1987-10-08 | Sony Corp | Head drum |
-
1987
- 1987-12-28 JP JP20078887U patent/JPH01121141U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62229562A (en) * | 1986-03-29 | 1987-10-08 | Sony Corp | Head drum |