JPH03252914A - Rotary drum device - Google Patents
Rotary drum deviceInfo
- Publication number
- JPH03252914A JPH03252914A JP5113090A JP5113090A JPH03252914A JP H03252914 A JPH03252914 A JP H03252914A JP 5113090 A JP5113090 A JP 5113090A JP 5113090 A JP5113090 A JP 5113090A JP H03252914 A JPH03252914 A JP H03252914A
- Authority
- JP
- Japan
- Prior art keywords
- circuit board
- printed circuit
- rotating drum
- rotary drum
- land
- 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
- 229910000679 solder Inorganic materials 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 abstract description 4
- 238000005476 soldering Methods 0.000 abstract description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、ビデオテープコーダ（以下、ＶＴＲという）
などの磁気記録装置に用いられる回転ドラム装置、特に
中継基板やアンプなどの部品を取りｆｌけた回路基板を
搭載した回転ドラム装置に関する。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a video tape coder (hereinafter referred to as a VTR).
The present invention relates to a rotating drum device used in a magnetic recording device such as the above, and particularly to a rotating drum device equipped with a circuit board from which parts such as a relay board and an amplifier are removed.
（従来の技術）
ヘリカルスキャン方式ＶＴＲの回転ドラム装置は、周知
のように下部固定ドラムとこれに同軸に取り付けられた
回転ドラｌ）どによって構成されている。これらのドラ
ムの周面をヘリカルにｌ習動りる磁気アープに回転ドラ
ムに設（１に磁気ヘッドによって信号を記録再生する構
成となっている。(Prior Art) As is well known, the rotating drum device of a helical scan type VTR is composed of a lower fixed drum and a rotating drum coaxially attached to the lower fixed drum. A rotating drum is equipped with a magnetic aperture that moves helically around the circumferential surface of these drums.
上記のように磁気ヘラ１へが回転１〜う１８とどｂに回
転するため、この回転部分のバランスか乱れると回転ド
ラムの回転振れが大きくなったり、共振か発生してヘッ
トの軌跡に多大な影響を及ぼづ。As mentioned above, since the magnetic spatula 1 rotates from rotation 1 to rotation 18 and b, if the balance of this rotating part is disturbed, the rotational vibration of the rotating drum will increase or resonance will occur, which will greatly affect the trajectory of the head. influence.
そのためこの種の回転ドラム装置は回転のバランスを取
ることが大切である。Therefore, it is important to balance the rotation of this type of rotating drum device.
一方、高精細ＶＴＲやディジタルＶＴＲでは、回転ドラ
ム内に回路基板を搭載しているちのがある。この場合、
出来る限りバランスをとるようにはしているものの、回
路基板上の部品の配置なとによってアンバランスが生し
や寸い。そこで重い部分を削り取ったり、軽い部分にウ
ェイトを（＝Ｊ ｔプでバランスを取ることになる。機
械的回転部分はそのどちらの方法も行なわれているが、
回路基板にはウェイトを付けるのが一般的である。何れ
にしてもアンバランス妃ど方向とを検出して、そのｉｌ
ｌ ｆｉ！ｉ’に正確にウェイトをｆ・ｌ ＩＩＩ Ｌ
、又は削除しな（Ｊればならない。On the other hand, some high-definition VTRs and digital VTRs have a circuit board mounted inside a rotating drum. in this case,
Although we try to maintain as much balance as possible, imbalances can easily occur due to the placement of components on the circuit board. Therefore, the balance is achieved by cutting off the heavy parts or adding weight to the light parts. Both methods are used for mechanically rotating parts, but
It is common to attach weights to circuit boards. In any case, it is possible to detect the unbalanced position and its direction.
lfi! Accurately assign weight to i' f・l III L
, or delete it (J).
（発明か解決しようとする課題）
上記の如く、回路基板を搭載した回転ドラ１８において
は、回転バランスが乱れ易く、粘度の高いバランス取り
が要求されている。(Problems to be Solved by the Invention) As described above, in the rotary drum 18 on which the circuit board is mounted, the rotational balance is easily disturbed, and high viscosity balancing is required.
本発明は、回転のアンバランスを容易に、かつ正確に修
正することかできるようにした回転ドラム装置を提供で
ることを目的とするものである。SUMMARY OF THE INVENTION An object of the present invention is to provide a rotating drum device that allows rotational imbalance to be easily and accurately corrected.
［発明の構成］
（課題を解決するための手段）
そのため、本発明は回転ドラムに搭載する回路基板を回
転ドラムと同軸の円盤状とし、その周辺部に所定の間隔
で角度目盛を設け、かつ、回路基板の周辺部にバランス
取り用半田を盛るランドを形成したことを特徴とするも
のである。[Structure of the Invention] (Means for Solving the Problems) Therefore, the present invention provides a circuit board mounted on a rotating drum that has a disk shape coaxial with the rotating drum, has angle scales provided at predetermined intervals around its periphery, and This is characterized in that a land is formed on the periphery of the circuit board on which balancing solder is applied.
（作用）
上記のように、本発明の回転ドラム装置は、そこに搭載
した回路基板に角度目盛が設けられ、かつ周辺部に半田
を盛るランドが設けられているのて、アンバランスの早
と方１ｆ１１どがｉ；ｔ １１１１されると、その方向
【こ必要な吊の半田を経ることによって簡単にアンバラ
ンスを解消することができる。(Function) As described above, the rotating drum device of the present invention has an angular scale on the circuit board mounted thereon, and has lands on the periphery for applying solder, which prevents imbalance from occurring quickly. When the direction 1f11 is i;t 1111, the unbalance can be easily resolved by applying the necessary hanging solder.
（実施例） 実施例について図面を参照して説明する。(Example) Examples will be described with reference to the drawings.
第１図は本弁明の一実施例の回転ドラム装置を示す斜視
図、第２図は第１図の平面図である。下部固定（ヘラム
］の上にこれと同軸に回転ドラム２が回転できるように
取り句けられ、回転ｉ〜クラムの下面に磁気ヘッド３が
先端を外周に臨ませるように配置されているのは従来同
様である。また、下部固定ドラム１の下に回転ドラム２
を回転させるモータ６が取り付けられ、下部固定ドラム
１の外周面に磁気テープ４の走行の案内となるリード５
が斜めに形成されているのも従来同様である。FIG. 1 is a perspective view showing a rotating drum device according to an embodiment of the invention, and FIG. 2 is a plan view of FIG. 1. A rotary drum 2 is arranged on the lower fixation (heram) so that it can rotate coaxially with this, and a magnetic head 3 is arranged on the bottom surface of the rotating drum so that its tip faces the outer periphery. It is the same as before. Also, a rotating drum 2 is installed below the lower fixed drum 1.
A reed 5 is attached to the outer peripheral surface of the lower fixed drum 1 to guide the running of the magnetic tape 4.
It is also the same as in the conventional case that is formed diagonally.
モータ６の下に突き出ている回転軸７（よ回転ドラム２
に直結されている。Rotating shaft 7 protruding below motor 6 (rotating drum 2
is directly connected to.
本実施例では上記回転ドラム２の上面側に回路基板８が
固定されている。この回路基板８は、円盤状であり回転
ドラム２と同軸に取りイ・］（づられている。これに取
り付けられる各部品（、Ｌ（きるだ（Ｉバランスよく配
「ｊされる。In this embodiment, a circuit board 8 is fixed to the upper surface of the rotating drum 2. This circuit board 8 is disk-shaped and arranged coaxially with the rotating drum 2. Each component attached to it is arranged in a well-balanced manner.
本文施例の回路１ス也８は、その周辺に１′ｍを鼎るラ
ンド９が形成されており、かつ３０度の間隔て角ａｎａ
１ｏがシルク印刷で形成されている。In the circuit 1 and 8 of the present embodiment, a land 9 extending 1'm is formed around it, and an angle ana is formed at an interval of 30 degrees.
1o is formed by silk printing.
したがって、この実施例では回路基板８を回転ドラム２
に配置したのち、回転部分のバランスを図示しない検出
設置でその量と方向とを検出し、得られた方向情報から
角度目盛１０の位置に、検出された迅だけの半田をラン
ド９に盛ることによって最小の半田で、容易にかつ正確
にバランスをとることができる。Therefore, in this embodiment, the circuit board 8 is connected to the rotating drum 2.
Then, the amount and direction of the balance of the rotating part are detected by a detection installation (not shown), and from the obtained direction information, the detected amount of solder is placed on the land 9 at the angle scale 10 position. balance can be achieved easily and accurately with minimal soldering.
［発明の効果１
以上のように本発明の回転ドラム装置は、回転ドラムと
ともに回転する回路基板の周辺部に角度目盛を配置し、
かつ半田を盛るランドを形成させたので、容易に、正確
に全体のバランスを取ることができる。[Effect of the invention 1 As described above, the rotating drum device of the present invention has angle scales arranged around the circuit board that rotates together with the rotating drum,
In addition, since the land on which the solder is applied is formed, the overall balance can be easily and accurately maintained.
第１図は本発明の一実施例の回転トラム装備を示す斜視
図、第２図は第１図の平面図である。
１・・Ｆ部固定ドラム、２・・・１０１転ドラム、３・
・・磁気ヘッド、４・・・磁気７−１．５・・・リード
、６・・・モータ、７・・・回転軸、８・・・回路基板
、９・・・ランド、１０・・・角度目盛。FIG. 1 is a perspective view showing rotary tram equipment according to an embodiment of the present invention, and FIG. 2 is a plan view of FIG. 1. 1.F section fixed drum, 2.101 rotating drum, 3.
... Magnetic head, 4... Magnetic 7-1.5... Lead, 6... Motor, 7... Rotating shaft, 8... Circuit board, 9... Land, 10... Angle scale.
Claims (1)
盤状とし、その周辺部に所定の角度間隔の角度目盛を設
け、かつ、回路基板の周辺部にバランス取り用半田を盛
るランドを形成したことを特徴とする回転ドラム装置。The circuit board mounted on the rotating drum is shaped like a disk coaxial with the rotating drum, and the periphery of the circuit board is provided with angular scales at predetermined angular intervals, and the periphery of the circuit board is provided with lands on which balancing solder is applied. A rotating drum device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5113090A JP2883389B2 (en) | 1990-02-28 | 1990-02-28 | Rotary drum device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5113090A JP2883389B2 (en) | 1990-02-28 | 1990-02-28 | Rotary drum device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03252914A true JPH03252914A (en) | 1991-11-12 |
| JP2883389B2 JP2883389B2 (en) | 1999-04-19 |
Family
ID=12878233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5113090A Expired - Lifetime JP2883389B2 (en) | 1990-02-28 | 1990-02-28 | Rotary drum device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2883389B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6667859B1 (en) * | 1999-07-06 | 2003-12-23 | Mitsumi Electric Co., Ltd. | Rotational balance adjustment mechanism for a rotary head drum device |
-
1990
- 1990-02-28 JP JP5113090A patent/JP2883389B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6667859B1 (en) * | 1999-07-06 | 2003-12-23 | Mitsumi Electric Co., Ltd. | Rotational balance adjustment mechanism for a rotary head drum device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2883389B2 (en) | 1999-04-19 |
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