JPH02137111A - Head drum device for magnetic recording and reproducing device - Google Patents
Head drum device for magnetic recording and reproducing deviceInfo
- Publication number
- JPH02137111A JPH02137111A JP29120988A JP29120988A JPH02137111A JP H02137111 A JPH02137111 A JP H02137111A JP 29120988 A JP29120988 A JP 29120988A JP 29120988 A JP29120988 A JP 29120988A JP H02137111 A JPH02137111 A JP H02137111A
- Authority
- JP
- Japan
- Prior art keywords
- head
- elastic member
- height
- head base
- magnetic recording
- 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
- 238000006243 chemical reaction Methods 0.000 abstract description 9
- 241000238631 Hexapoda Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、ＶＴＲ等のヘリカル走査記録再生方式の磁気
記録再生装置のヘッドドラム装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a head drum device for a helical scanning recording/reproducing type magnetic recording/reproducing apparatus such as a VTR.
従来の技術 従来の磁気記録再生装置について説明する。Conventional technology A conventional magnetic recording/reproducing device will be explained.
第４図は、この従来の磁気記録再生装置のベツドドラム
装置の上ドラムの断面図である。図中、１は上ドラム、
２はヘッドベース、３はヘッド、４は締結手段、５は虫
ネジよりなるヘッド高さ変換手段である。FIG. 4 is a sectional view of the upper drum of the bed drum device of this conventional magnetic recording and reproducing apparatus. In the figure, 1 is the upper drum;
2 is a head base, 3 is a head, 4 is a fastening means, and 5 is a head height converting means consisting of an insect screw.
第４図に示すように、ヘッド３を有するヘッドベース２
は締結手段４により上ドラム１に固定されている。As shown in FIG. 4, a head base 2 having a head 3
is fixed to the upper drum 1 by fastening means 4.
以上のように構成されたヘッドドラム装置の動作につい
て説明する。The operation of the head drum device configured as above will be explained.
まずヘッド高さ変換手段５はヘッドベース２に当接して
おり、ヘッド高さ変換手段５の移動によりヘッドベース
２を変形させヘッド３の高さを調整するのである。First, the head height converting means 5 is in contact with the head base 2, and the movement of the head height converting means 5 deforms the head base 2 to adjust the height of the head 3.
発明が解決しようとする課題
しかしながら上記の従来の構成ではヘッド高さ変換手段
５が直接ヘッドベース２に当接しておりヘッド高さ変換
手段５の移動量が直接ヘッドベース２の移動量となりヘ
ッド３の移動量がさらに拡大され精密な調整が困難であ
るという問題点を有していた。Problems to be Solved by the Invention However, in the conventional configuration described above, the head height converting means 5 is in direct contact with the head base 2, and the amount of movement of the head height converting means 5 directly becomes the amount of movement of the head base 2. The problem is that the amount of movement is further increased, making precise adjustment difficult.
本発明は上記従来の問題点を解決するもので、ヘッドの
高さ調整を簡単に精密に行える磁気記録再生装置のヘッ
ドドラム装置を提供するものである。The present invention solves the above-mentioned conventional problems and provides a head drum device for a magnetic recording/reproducing device that allows the height of the head to be easily and precisely adjusted.
課題を解決するための手段
この目的を達成するため本発明はヘッドドラム装置の上
ドラムにヘッド高さ調整手段を有し、ヘッド高さ調整手
段はヘッド高さ変換手段とヘッド高さ変換手段とヘッド
ベースとの間に設けた弾性部材とを備えた構成を有して
いる。Means for Solving the Problems To achieve this object, the present invention has a head height adjustment means on the upper drum of the head drum device, and the head height adjustment means includes a head height conversion means and a head height conversion means. It has a configuration including an elastic member provided between the head base and the head base.
作用
本発明は上記した構成により、ヘッド高さ変換手段の移
動量が弾性部材の変形により縮小されてヘッドベースに
伝達され微少な高さ調整が可能となる。Effect of the Invention With the above-described configuration, the amount of movement of the head height converting means is reduced by the deformation of the elastic member and transmitted to the head base, allowing minute height adjustment.
実施例 本発明の一実施例を図面をもとに説明する。Example An embodiment of the present invention will be described based on the drawings.
第１図は本発明第１の実施例を示す磁気記録再生装置の
ヘッドドラム装置の上ドラムの断面図で第４図と同一部
には同一番号をつける。（以下同じ）第１図において、
上ドラム１にヘッド３を有するヘッドベース２が締結手
段４により固定され虫ネジよりなるヘッド高さ変換手段
５とヘッドベース２との間に弾性部材６が構成されてい
る。FIG. 1 is a sectional view of an upper drum of a head drum device of a magnetic recording and reproducing apparatus showing a first embodiment of the present invention, and the same parts as in FIG. 4 are given the same numbers. (The same applies below) In Figure 1,
A head base 2 having a head 3 is fixed to an upper drum 1 by a fastening means 4, and an elastic member 6 is constructed between the head base 2 and a head height converting means 5 made of an insect screw.
以上のように構成された磁気記録再生装置のヘッドドラ
ム装置について以下にその動作について説明する。The operation of the head drum device of the magnetic recording/reproducing apparatus configured as described above will be explained below.
虫ネジよりなるヘッド高さ変換手段５を移動させると弾
性部材６を移動させその移動によりヘッドベース２を移
動させようとするがヘッドベース２は締結手段４により
上ドラム１に固定されているため片持ばりの条件になっ
て反力を弾性部材６に与える。その反力により弾性部材
が変形し、ヘッド高さ変換手段５の移動量が縮小してヘ
ッドベース２を移動させる。これを計算式により説明す
ると以下のようになる。When the head height conversion means 5 made of an insect screw is moved, the elastic member 6 is moved and the head base 2 is moved by this movement, but since the head base 2 is fixed to the upper drum 1 by the fastening means 4. A reaction force is applied to the elastic member 6 under the condition of a cantilever beam. The elastic member is deformed by the reaction force, the amount of movement of the head height converting means 5 is reduced, and the head base 2 is moved. This can be explained using a calculation formula as follows.
ｄＨ＝Ｋｅ＊Ｈ／ （Ｋｂ＋Ｋｅ）
ここで、ｄＨ：ヘッドベース２の移動量Ｈ：ヘッド高さ
変換手段の移動量
Ｋｂ：ヘッドベースのバネ係数
Ｋｅ：弾性部材のバネ係数
である。dH=Ke*H/ (Kb+Ke) Here, dH: Amount of movement of the head base 2 H: Amount of movement of the head height conversion means Kb: Spring coefficient of the head base Ke: Spring coefficient of the elastic member.
例えば、Ｋ ｅ ＝ Ｋ ｂとすると、ｄＨ＝０．５Ｈ
になって従来の２倍の精度で高さの設定ができる。For example, if K e = K b, dH = 0.5H
The height can now be set with twice the accuracy of conventional methods.
この弾性部材６の材料としてはアルミ材あるいはエンジ
ニアリングプラスティック等があり、前記計算式に基づ
いて任意に選べば良い。The material of the elastic member 6 may be aluminum or engineering plastic, and may be selected arbitrarily based on the above calculation formula.
第２図は本発明の第２の実施例を示す磁気記録再生装置
のヘッドドラム装置の上ドラムの断面図で、７は弾性部
材である。FIG. 2 is a sectional view of an upper drum of a head drum device of a magnetic recording/reproducing apparatus showing a second embodiment of the present invention, and 7 is an elastic member.
第２の実施例における弾性部材７は、第１の実施例にお
ける弾性部材６の代わりに一端の閉じた中空部材とし形
状的にそのバネ係数を低下させたものでその曇きは第１
の実施例と同じである。The elastic member 7 in the second embodiment is a hollow member with one end closed instead of the elastic member 6 in the first embodiment, and its spring coefficient is reduced due to its shape.
This is the same as the embodiment.
第３図は本発明の第３の実施例を示す磁気記録再生装置
のヘッドドラム装置の上ドラムの断面図で、８は弾性部
材である。FIG. 3 is a sectional view of an upper drum of a head drum device of a magnetic recording/reproducing apparatus showing a third embodiment of the present invention, and 8 is an elastic member.
第３の実施例における弾性部材８は、第１の実施例にお
ける弾性部材６の代わりに板バネ形状にして、形状的に
そのバネ係数を低下させたものでその働きは第１の実施
例と同じである。The elastic member 8 in the third embodiment is shaped like a plate spring instead of the elastic member 6 in the first embodiment, and has a lower spring coefficient due to its shape, and its function is the same as in the first embodiment. It's the same.
発明の効果
以上のように本発明は、ヘッド高さ調整手段をヘッド高
さ変換手段とヘッドベースとの間に弾性部材を設ける構
成にすることにより、ヘッド高さ変換手段の移動量より
ヘッドベースの移動量を小さ（することができ、簡便に
高精密にさらに短時間にヘッド高さを合わせることがで
き、その実用的効果は大きい。Effects of the Invention As described above, the present invention has a structure in which the head height adjusting means is provided with an elastic member between the head height converting means and the head base, so that the amount of movement of the head height converting means is smaller than the head base. The amount of movement can be made small, and the head height can be easily adjusted with high precision and in a short time, which has great practical effects.
第１図は本発明の第１の実施例における磁気記録再生装
置のヘッドドラム装置の上ドラムの断面図、第２図、第
３図は本発明の第２．第３の実施例における磁気記録再
生装置のヘッドドラム装置の上ドラムの断面図、第４図
は従来の磁気記録再生装置のヘッドドラム装置の上ドラ
ムの断面図である。
１・・・上ドラム、 ２・・・ヘッドベース、 ３
・・・ヘッド、 ４・・・締結手段、５・・・ヘッド
高さ変換手段、（３，７，８・・・弾性部材。
Ｉ・・−上ドラム
２−・・ヘッドベース
３゛°゛ヘツド
１−＃詩手役
５− ヘッド高さ変膚央子役
と（・−１］早ノトゴｊ；一部FIG. 1 is a sectional view of an upper drum of a head drum device of a magnetic recording/reproducing apparatus according to a first embodiment of the present invention, and FIGS. FIG. 4 is a cross-sectional view of the upper drum of the head drum device of the magnetic recording and reproducing device in the third embodiment, and FIG. 4 is a cross-sectional view of the upper drum of the head drum device of the conventional magnetic recording and reproducing device. 1... Upper drum, 2... Head base, 3
... Head, 4 ... Fastening means, 5 ... Head height conversion means (3, 7, 8 ... Elastic member. I ... - Upper drum 2 - ... Head base 3゛°゛Head 1 - # Poet role 5 - Head height change O child role and (・-1] Hayanotogo j; part
Claims (1)
に前記ヘッドベースを締結する締結手段と前記ヘッドの
高さを調整するヘッド高さ調整手段とを有し、前記ヘッ
ド高さ調整手段をヘッド高さ変換手段と前記ヘッド高さ
変換手段と前記ヘッドベースとの間に設けた弾性部材と
より構成したことを特徴とする磁気記録再生装置のヘッ
ドドラム装置。a head base having an upper drum and a head; a fastening means for fastening the head base to the upper drum; and a head height adjustment means for adjusting the height of the head; 1. A head drum device for a magnetic recording/reproducing apparatus, comprising a converting means and an elastic member provided between the head height converting means and the head base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63291209A JP2543161B2 (en) | 1988-11-17 | 1988-11-17 | Head drum device of magnetic recording / reproducing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63291209A JP2543161B2 (en) | 1988-11-17 | 1988-11-17 | Head drum device of magnetic recording / reproducing apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02137111A true JPH02137111A (en) | 1990-05-25 |
| JP2543161B2 JP2543161B2 (en) | 1996-10-16 |
Family
ID=17765876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63291209A Expired - Fee Related JP2543161B2 (en) | 1988-11-17 | 1988-11-17 | Head drum device of magnetic recording / reproducing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2543161B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5660967A (en) * | 1994-12-27 | 1997-08-26 | Mitsubishi Chemical Corporation | Photosensitive resin composition and method for forming photoresist pattern using the same |
| US5680279A (en) * | 1995-03-29 | 1997-10-21 | Daewoo Electronics Co., Ltd | Audio head assembly for use in a video cassette recorder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59130231U (en) * | 1983-02-15 | 1984-09-01 | 三菱電機株式会社 | VTR head |
| JPS62147120U (en) * | 1986-03-08 | 1987-09-17 |
-
1988
- 1988-11-17 JP JP63291209A patent/JP2543161B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59130231U (en) * | 1983-02-15 | 1984-09-01 | 三菱電機株式会社 | VTR head |
| JPS62147120U (en) * | 1986-03-08 | 1987-09-17 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5660967A (en) * | 1994-12-27 | 1997-08-26 | Mitsubishi Chemical Corporation | Photosensitive resin composition and method for forming photoresist pattern using the same |
| US5680279A (en) * | 1995-03-29 | 1997-10-21 | Daewoo Electronics Co., Ltd | Audio head assembly for use in a video cassette recorder |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2543161B2 (en) | 1996-10-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |