JPH02110811A - Rotary magnetic head drum - Google Patents
Rotary magnetic head drumInfo
- Publication number
- JPH02110811A JPH02110811A JP26147488A JP26147488A JPH02110811A JP H02110811 A JPH02110811 A JP H02110811A JP 26147488 A JP26147488 A JP 26147488A JP 26147488 A JP26147488 A JP 26147488A JP H02110811 A JPH02110811 A JP H02110811A
- Authority
- JP
- Japan
- Prior art keywords
- plate spring
- elastic support
- support member
- width
- contact member
- 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
- 239000004020 conductor Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は磁気記録再生装置に係り、特にビデオテープレ
コーダ等で磁気テープを巻きつけて信号の記録再生を行
なう回転磁気ヘッドドラムに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic recording and reproducing device, and more particularly to a rotating magnetic head drum for recording and reproducing signals by winding a magnetic tape in a video tape recorder or the like.
従来、この種の磁気記録再生装置δの回転磁気ヘッドド
ラムは第９図及び第１０図のように構成されている。第
９図は従来技術の回転ヘッドドラムの構成を説明する縦
断面図であって、１はアースブラシ、２は接地点、：３
は回転軸、４は回転ディスク、５は回転ドラム、６は磁
気テープを示す。Conventionally, the rotating magnetic head drum of this type of magnetic recording/reproducing device δ has been constructed as shown in FIGS. 9 and 10. FIG. 9 is a longitudinal sectional view illustrating the configuration of a rotary head drum of the prior art, in which 1 is a ground brush, 2 is a grounding point, and 3
4 is a rotating shaft, 4 is a rotating disk, 5 is a rotating drum, and 6 is a magnetic tape.
また、アースブラシ１は、保持金具１ａ、板バネ１ｂ、
接点部材１ｃ、及び振動吸収部材１ｄ、からなる。同図
において、回転ドラム５に巻き付けられた磁気テープ６
との間に発生した静電気は回転ディスク４、回転軸３の
先端からアースブラシ１を経て接地点２に逃がされてい
る。第１０図は第９図のうちアースブラシ１のみを抜き
出した平面図で、１８は保持金具１ａの端部である。The earth brush 1 also includes a holding fitting 1a, a plate spring 1b,
It consists of a contact member 1c and a vibration absorbing member 1d. In the figure, a magnetic tape 6 is wound around a rotating drum 5.
The static electricity generated between the rotary disk 4 and the rotating shaft 3 is released to the grounding point 2 via the grounding brush 1. FIG. 10 is a plan view showing only the grounding brush 1 extracted from FIG. 9, and 18 is the end of the holding metal fitting 1a.
なお、この種の装置として関連するものには例えば、実
開昭６２−１１．３４０６公報が挙げられる。Note that related devices of this type include, for example, Japanese Utility Model Application Laid-open No. 62-11.3406.
上記従来技術においては１回転軸３と接点部材１ｃとの
間の摩擦による振動が板バネ１ｂで共振して騒音を発生
する為、振動吸収部材１− ｄを設けねばならず、アー
スブラシ１自体が高価になってしまうという欠点があっ
た。In the above-mentioned conventional technology, since the vibration caused by the friction between the one-rotation shaft 3 and the contact member 1c resonates with the plate spring 1b and generates noise, it is necessary to provide a vibration absorbing member 1-d, and the ground brush 1 itself The disadvantage was that it was expensive.
本発明は１部品点数を減らし、安価でかつ信頼性の高い
アースブラシを具備した、磁気記録再生装置の回転磁気
ヘッドドラムを提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a rotating magnetic head drum for a magnetic recording/reproducing device that has a reduced number of parts, is inexpensive, and is equipped with a highly reliable ground brush.
上記目的は、片端に導電性材料から成る接点部材を具備
した導電性材料から成る弾性支持部材（以下板バネとい
う）と、該板バネを重なり合せて保持する保持金具とか
ら成るアースブラシを有する回転磁気ヘッドドラムにお
いて、前記保持金具の前記板バネ側の端部形状が、前記
板バネの幅よりも徐々に狭くなって、前記板バネの前記
接点部材方向に突出している構造とすることにより達成
される。The above-mentioned object has an earth brush consisting of an elastic support member (hereinafter referred to as a leaf spring) made of a conductive material with a contact member made of a conductive material at one end, and a holding fitting that holds the leaf springs in an overlapping manner. In the rotating magnetic head drum, the shape of the end of the holding fitting on the leaf spring side gradually becomes narrower than the width of the leaf spring and protrudes toward the contact member of the leaf spring. achieved.
保持金具の板バネ側の端部形状は、前記板バネの幅より
も徐々に狭くなって、前記板バネの前記接点部材方向に
突出している。その為、前記板バネは特定のバネ常数を
もたないので、前記接点部材と回転軸先端との間でＳ擦
振動が発生しても、前記板バネは共振することなく、騒
音も発生しない。The shape of the end of the holding fitting on the leaf spring side gradually becomes narrower than the width of the leaf spring, and protrudes toward the contact member of the leaf spring. Therefore, since the leaf spring does not have a specific spring constant, even if S friction vibration occurs between the contact member and the tip of the rotating shaft, the leaf spring does not resonate and no noise is generated. .
以下、本発明の実施例を図面を用いて説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明による回転ヘッドシリンダの縦断面図で
あって、１はアースブラシ、２は接地点、３は回転軸、
４は回転ディスク、５は回転ドラ１１．６は磁気テープ
である。FIG. 1 is a longitudinal sectional view of a rotary head cylinder according to the present invention, in which 1 is a ground brush, 2 is a grounding point, 3 is a rotating shaft,
4 is a rotating disk, 5 is a rotating drum 11, and 6 is a magnetic tape.
同図において回転ドラム５に巻き付けられた磁気テープ
６との間に発生した静電気は回転ディスク４、回転軸３
の先端からアースブラシ１を経て接地点２に逃がされて
いる。In the same figure, static electricity generated between the rotating drum 5 and the magnetic tape 6 is generated between the rotating disk 4 and the rotating shaft 3.
from the tip of the grounding brush 1 to the grounding point 2.
第２図は第１図を上面から見た平面図で特にアースブラ
シ１を取り出したものである。アースブラシ１のうち、
１ａは保持金具、ｌｂは板バネ、１ｃは接点部材、１ｅ
は保持金具１ａの端部を示す。ここで、回転軸３の先端
とアースブラシ１の接点部材１ｃとの間に発生した冷然
振動は、板バネ１ｂが端部１ｅの部分部分でバネ常数が
異なる為、共振せず、したがって共鳴もせず謂る［ブラ
シ鳴き」騒音が発生しない効果がある。FIG. 2 is a plan view of FIG. 1 viewed from above, with the ground brush 1 taken out. Of the earth brush 1,
1a is a holding metal fitting, lb is a leaf spring, 1c is a contact member, 1e
indicates the end of the holding fitting 1a. Here, the cold vibration generated between the tip of the rotating shaft 3 and the contact member 1c of the ground brush 1 does not resonate because the spring constant of the leaf spring 1b is different at the end 1e, and therefore it does not resonate. This has the effect of eliminating the so-called "brush squeal" noise.
第３図は横軸に端部１ｅの位置、縦軸に板バネ１ｂのバ
ネ常数を示しである。In FIG. 3, the horizontal axis shows the position of the end portion 1e, and the vertical axis shows the spring constant of the leaf spring 1b.
なお、端部１ｅの形状は、第２図のような半円形状のみ
ならず第４．５，６，７．８図に示す形状又、それらを
組合せた形状を含むのはもちろんのことである。第４図
は片斜面形状、第５図は三角形状、第６図は二次曲線形
状、第７図は階段形状、第８図は台形形状を示す。Note that the shape of the end portion 1e includes not only the semicircular shape shown in FIG. 2, but also the shapes shown in FIGS. 4.5, 6, and 7.8, and a combination thereof. be. 4 shows a single slope shape, FIG. 5 shows a triangular shape, FIG. 6 shows a quadratic curve shape, FIG. 7 shows a stepped shape, and FIG. 8 shows a trapezoidal shape.
本発明によれば、振動吸収部材等なしに板バネの共振を
防げるので、アース金具の部品点数が減り、安価で信頼
性の高い、磁気記録再生装置ｄの回転磁気ヘッドシリン
ダが提供できる効果がある。According to the present invention, the resonance of the leaf spring can be prevented without using a vibration absorbing member, etc., so the number of parts of the grounding fitting is reduced, and an inexpensive and highly reliable rotating magnetic head cylinder of the magnetic recording/reproducing device d can be provided. be.
第１図は本発明の一実施例の回転ヘッドドラムの縦断面
図、第２図は第１図の上からの平面図のうちアース金具
のみを取り出して示す平面図、第３図は横軸に１８の位
置と縦軸に板バネのバネ常数を示したグラフ、第４図〜
第８図は保持金具の端部の平面図で第４図は片斜面形状
、第５図は三角形状、第６図は二次曲線形状、第７図は
階段状形状、第８図は台形形状を示す平面図、第９図は
従来の回転ヘッドドラムの縦断面図、第１０図は第９図
の上からの平面図のうちアース金具のみ取り出して示す
平面図である。
■・・・アースブラシ、２・・・接地点、３・・・回転
軸。
４・・・回転ディスク、５・・・回転ドラム、６・・・
磁気テープ、１ａ・・・保持金具、１ｂ・・・板バネ、
１ｃ・・・接点部材、１ｄ・・・振動吸収部材、１ｅ・
・・保持金具の端部。
５ 回斡トラ龜
筋
躬
λ
モ
図
肩
図FIG. 1 is a longitudinal cross-sectional view of a rotary head drum according to an embodiment of the present invention, FIG. 2 is a plan view taken from above of FIG. 1, showing only the grounding fitting, and FIG. 3 is a horizontal axis. Graph showing the position of 18 and the spring constant of the leaf spring on the vertical axis, Figure 4~
Figure 8 is a plan view of the end of the holding fitting, Figure 4 is a single slope shape, Figure 5 is a triangular shape, Figure 6 is a quadratic curve shape, Figure 7 is a stepped shape, and Figure 8 is a trapezoid. FIG. 9 is a vertical sectional view of a conventional rotary head drum, and FIG. 10 is a plan view showing only the grounding fitting taken out from the top plan view of FIG. 9. ■...Earth brush, 2...Grounding point, 3...Rotating axis. 4... Rotating disk, 5... Rotating drum, 6...
Magnetic tape, 1a... Holding metal fitting, 1b... Leaf spring,
1c... Contact member, 1d... Vibration absorbing member, 1e.
...The end of the holding fitting. 5. Shoulder diagram
Claims (1)
性材料から成る弾性支持部材と、該弾性支持部材を重な
り合せて保持する保持金具とから成るアースブラシを有
する回転磁気ヘッドドラムにおいて、前記保持金具の前
記弾性支持部材側の端部形状が、前記弾性支持部材の幅
よりも徐々に狭くなって、前記弾性支持部材の前記接点
部材方向に突出している構造としたことを特徴とする回
転磁気ヘッドドラム。1. A rotating magnetic head drum having a grounding brush comprising an elastic support member made of a conductive material having a contact member made of a conductive material at one end, and a holding fitting for holding the elastic support member in an overlapping manner. Rotation characterized in that the end shape of the holding fitting on the side of the elastic support member is gradually narrower than the width of the elastic support member and protrudes toward the contact member of the elastic support member. magnetic head drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26147488A JPH02110811A (en) | 1988-10-19 | 1988-10-19 | Rotary magnetic head drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26147488A JPH02110811A (en) | 1988-10-19 | 1988-10-19 | Rotary magnetic head drum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02110811A true JPH02110811A (en) | 1990-04-24 |
Family
ID=17362406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26147488A Pending JPH02110811A (en) | 1988-10-19 | 1988-10-19 | Rotary magnetic head drum |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02110811A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5486966A (en) * | 1993-08-24 | 1996-01-23 | Daewoo Electronics Co., Ltd. | Head drum ground system for use in a video cassette recorder |
| US5724214A (en) * | 1995-11-30 | 1998-03-03 | Daewoo Electronics Co., Ltd. | Discharging device for head drum |
| US5929553A (en) * | 1996-03-26 | 1999-07-27 | Nec Corporation | Piezoelectric transformer |
| KR100441738B1 (en) * | 1996-11-28 | 2004-10-02 | 삼성테크윈 주식회사 | Automatic passive telemeter of camera for integrating telemetric frame of finder with measuring region of telemetric sensor |
-
1988
- 1988-10-19 JP JP26147488A patent/JPH02110811A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5486966A (en) * | 1993-08-24 | 1996-01-23 | Daewoo Electronics Co., Ltd. | Head drum ground system for use in a video cassette recorder |
| US5724214A (en) * | 1995-11-30 | 1998-03-03 | Daewoo Electronics Co., Ltd. | Discharging device for head drum |
| US5929553A (en) * | 1996-03-26 | 1999-07-27 | Nec Corporation | Piezoelectric transformer |
| KR100441738B1 (en) * | 1996-11-28 | 2004-10-02 | 삼성테크윈 주식회사 | Automatic passive telemeter of camera for integrating telemetric frame of finder with measuring region of telemetric sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1359568A2 (en) | Hard disk drive having disk protector and magnetic head protector | |
| JPH02110811A (en) | Rotary magnetic head drum | |
| EP1336960A2 (en) | Disk clamp of hard disk drive | |
| JPS647466Y2 (en) | ||
| JPH0124753Y2 (en) | ||
| KR960011793B1 (en) | Magnetic tape cassette with easily assembled lid spring | |
| CA1077168A (en) | Rotary head assembly | |
| JP3886277B2 (en) | Magnetic recording / reproducing device | |
| JPH042463Y2 (en) | ||
| JPS6334098Y2 (en) | ||
| KR900008847Y1 (en) | Rotating head drum protection device for video tape recorder | |
| JPS5821514Y2 (en) | Rotating object grounding device | |
| JPH0728569Y2 (en) | Centrifugal magnetic head device | |
| US6111728A (en) | Device for mounting a head support on a head disc | |
| JP2532436Y2 (en) | Rotating head type magnetic recording / reproducing device | |
| JPH01130315A (en) | Rotary head assembly | |
| JPS5954070A (en) | Supporting device of magnetic head | |
| JP2722691B2 (en) | Floppy disk | |
| JPH0521726Y2 (en) | ||
| JPH0519858Y2 (en) | ||
| HK1013170A1 (en) | Bearing plate arrangement for supporting the rotary actuator of a disk drive | |
| JPH045100Y2 (en) | ||
| JPS5819740Y2 (en) | magnetic head | |
| JPH07110908A (en) | Magnetic head apparatus | |
| JPH04295611A (en) | Double azimuth head |