JPH0244525A - Flexible board fixing device - Google Patents
Flexible board fixing deviceInfo
- Publication number
- JPH0244525A JPH0244525A JP19349088A JP19349088A JPH0244525A JP H0244525 A JPH0244525 A JP H0244525A JP 19349088 A JP19349088 A JP 19349088A JP 19349088 A JP19349088 A JP 19349088A JP H0244525 A JPH0244525 A JP H0244525A
- Authority
- JP
- Japan
- Prior art keywords
- flexible substrate
- flexible
- optical head
- head unit
- bending
- 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
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はレーザー光等でディスク状記録媒体に情報を記
録、再生及び／又は消去を行う情報記録再生装置に設け
られる装置に関し、特に移動可能な光学ヘッドユニット
をフレキシブル基板によって接続した装置に設けられる
フレキシブル基板固定装置に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a device installed in an information recording and reproducing device that records, reproduces, and/or erases information on a disk-shaped recording medium using laser light or the like, and particularly relates to a device that is movable. The present invention relates to a flexible substrate fixing device that is installed in a device in which an optical head unit is connected by a flexible substrate.
従来、７レキシプル基板は屈曲自在の利点を生かし、限
られた狭いスペースに配設したシ、可動部との電気的接
続等に多くの装置が採用している。Conventionally, the 7 lexiple board has been used in many devices, taking advantage of its bendability, for installation in a limited narrow space, for electrical connection with a movable part, and the like.
特に、フレキシブル基板の繰シ返し屈曲を受ける部分に
は、フレキシブル基板内部の銅箔パターンを保護する為
、厚み１００μｍ前後の別部品を裏打ちすることによシ
鋭角的な曲げを防いでいる。In particular, in order to protect the copper foil pattern inside the flexible substrate, the portion of the flexible substrate that is subjected to repeated bending is lined with a separate component approximately 100 μm thick to prevent sharp bending.
しかしながら、繰り返し屈曲を受けるフレキシブル基板
の耐久性を向上させる為の裏打ちはフレキシブル基板の
コストアップになると共に、それでも十分な耐久性を得
る事が出来なかった。基本的なフレキシブル基板の屈曲
性は第５図の５０の様な屈曲に対しては耐久性があるが
、第６図の５２の様な使い方に対しては、非常に耐久性
が低下し、最悪数千回から数万回程度で銅箔Ａ？ターン
が断線してしまう。フレキシブル基板の耐久性を向上さ
せるには第５図の様な固定部からたわみ部への曲げＲを
大きくするとよいが、スペースを十分にとり、フレキシ
ブル基板のたわみ長さに余裕をもたせないと、フレキシ
ブル基板の反力と、裏打ち材の反力によって可動部の動
きを阻害すると共に、装置そのものが大きくなるという
欠点があり、ノ母−ソナルコンピューター等に内蔵する
為にフルノ九イト、更にはハーフ／％イトのスペースで
配線しようとすると、実現出来ないのが現状である。第
６図の溝成は、スペース効率が良く、フレキシブル基板
反力も最小限に留める事が出来るが、経時変化によシ、
特に裏打ち材によって７しΦシプル基板屈曲部が元にも
どろうとして、フレキシブル基板反力の変化が発生し、
初期特性を維持する事が難しく、耐久性の問題と共に、
アクセス時間の変化、最悪の場合には可動部が所定位置
まで作動しない事等も発生する。However, lining for improving the durability of a flexible substrate that is subjected to repeated bending increases the cost of the flexible substrate, and even then, sufficient durability cannot be obtained. The basic flexibility of flexible substrates is durable against bending as shown at 50 in Figure 5, but when used as shown at 52 in Figure 6, the durability is greatly reduced. In the worst case, copper foil A after several thousand to tens of thousands of times? The turn is disconnected. In order to improve the durability of flexible printed circuit boards, it is better to increase the bending radius from the fixed part to the flexible part as shown in Figure 5, but if you do not take enough space and allow for the length of bending of the flexible printed circuit board, the flexible The movement of the movable parts is hindered by the reaction force of the board and the reaction force of the lining material, and the device itself has the disadvantage of being large. Currently, if you try to wire in a space of %, it is not possible. The groove configuration shown in Figure 6 has good space efficiency and can minimize the reaction force of the flexible board, but it is susceptible to changes over time.
In particular, when the bending part of the flexible board tries to return to its original position due to the backing material, a change in the reaction force of the flexible board occurs.
It is difficult to maintain the initial characteristics, and along with durability problems,
Changes in access time may occur, and in the worst case, the movable part may not move to a predetermined position.
本発明は上述従来技術の問題点に鑑みなされたものであ
シ、その目的は限られたスペース内で前記フレキシブル
基板の屈曲部の耐久性を飛躍的に向上させることができ
、フレキシブル基板反力を最小限に留めると共に経時変
化をなくすことを可能とする、７レキシプル基板固定装
置を提供することにある。The present invention has been made in view of the problems of the prior art described above, and its purpose is to dramatically improve the durability of the bent portion of the flexible substrate within a limited space, and to reduce the reaction force of the flexible substrate. An object of the present invention is to provide a 7-lexiple board fixing device that makes it possible to minimize the damage and eliminate changes over time.
上記目的は本発明によれば、一端を移動可能にされてい
る光学ヘッドユニットに電気的に接続されておシ他端を
該光学ヘッドユニットに対し相対的に固定されている情
報記録再生装置に電気的に接続されているフレキシブル
基板を位置決め固定する部材が、フレキシブル基板内を
通過する電気信号を外部ノイズから守るシールド板の機
能を有していることを特徴とする、フレキシブル基板固
定装置によって達成される。According to the present invention, one end is electrically connected to a movable optical head unit, and the other end is connected to an information recording/reproducing device that is fixed relative to the optical head unit. Achieved by a flexible board fixing device characterized in that the member that positions and fixes the electrically connected flexible board has the function of a shield plate that protects electrical signals passing through the flexible board from external noise. be done.
以下、本発明に係る実施例を図面に基づいて具体的且つ
詳細に説明する。Hereinafter, embodiments of the present invention will be described specifically and in detail based on the drawings.
第１図は本発明に係るフレキシブル基板固定装置の実施
例を示す斜視図であシ、第２図は本発明を説明するため
のフレキシブル基板固定装置の分解斜視図である。FIG. 1 is a perspective view showing an embodiment of a flexible substrate fixing device according to the present invention, and FIG. 2 is an exploded perspective view of the flexible substrate fixing device for explaining the present invention.
図において、１は情報記録媒体に情報の記録及び／又は
再生及び／又は消去を行う光学系の全部又は一部をドラ
ッギング方向とフす−カス方向に移動調整するアクチー
エータユニットである。２はレーデ−光を発生させる半
導体レーザーユニットである。３は不図示のリニアエン
コーダーによって光学ヘッドユニット７全体のトラッキ
ング方向の位置を検出するリニアセンサーである。In the figure, reference numeral 1 denotes an actuator unit that moves and adjusts all or part of an optical system for recording and/or reproducing and/or erasing information on an information recording medium in a dragging direction and a cross direction. 2 is a semiconductor laser unit that generates radar light. 3 is a linear sensor that detects the position of the entire optical head unit 7 in the tracking direction using a linear encoder (not shown).
４は電源信号等を伝達するフレキシブル基板である。５
は第２図に示すセンサー８のシールド板を兼ねたフレキ
シブル基板固定部材である。６は前記センサー８及び他
の信号を不図示の増幅回路まで導ひく伝達ラインのシー
ルド板を兼ねたフレキシブル基板固定部材である。該フ
レキシブル基板固定部材６は前記フレキシブル基板固定
部材５と共にフレキシブル基板４をはさんでビス止め固
定されておシ、更にフレキシブル基板４の屈曲部を第３
図に示す様に屈曲方向に約６０度（本実施例の場合）屈
曲するように固定されている。4 is a flexible substrate that transmits power signals and the like. 5
is a flexible board fixing member that also serves as a shield plate for the sensor 8 shown in FIG. Reference numeral 6 denotes a flexible substrate fixing member that also serves as a shield plate for a transmission line that guides the sensor 8 and other signals to an amplification circuit (not shown). The flexible substrate fixing member 6 is fixed together with the flexible substrate fixing member 5 with screws across the flexible substrate 4, and furthermore, the bent portion of the flexible substrate 4 is attached to the third
As shown in the figure, it is fixed so as to be bent approximately 60 degrees (in the case of this embodiment) in the bending direction.
７は前記アクチーエータユニット１、半導体レーザーユ
ニット２、リニアセンサー３、フレキシブル基板４、フ
レキシブル基板固定部材５及び６、等を搭載して、不図
示のレール上を矢印Ｘ方向（即ち、トラック方向）に移
動可能にされている光学ヘッドユニットである。Reference numeral 7 mounts the actuator unit 1, semiconductor laser unit 2, linear sensor 3, flexible substrate 4, flexible substrate fixing members 5 and 6, etc., and moves on a rail (not shown) in the direction of the arrow X (i.e., in the track direction). ) is an optical head unit that is movable.
第２図は前述の様に７しΦシプル基板固定部材５及び６
の分解斜視図である。Figure 2 shows 7 Φ shiple board fixing members 5 and 6 as described above
FIG.
図示する様に、フレキシブル基板固定部材５は光学ヘッ
ドユニット７にビス止めされる。該光学ヘッドユニット
７は情報記録媒体上に記録された信号を読みとるセンサ
ー８が設けられている。該センサー８は前記フレキシブ
ル基板固定部材５によってシールドされる。フレキシブ
ル基板固定部材５の光学ヘッドユニット７が接続される
側に対し逆側の端部には、フレキシブル基板４をはさん
でフレキシブル基板固定部材６がビス止めによシ固定さ
れる。その際各部材の位置決めはフレキシブル基板４の
位置決め部４ａ、４ｂにビスを通すことによシ行われる
。フレキシブル基板固定部材６はフレキシブル基板４の
微弱信号を伝達する部分をシールドする機能を有してい
る。As shown in the figure, the flexible substrate fixing member 5 is fixed to the optical head unit 7 with screws. The optical head unit 7 is provided with a sensor 8 that reads signals recorded on the information recording medium. The sensor 8 is shielded by the flexible substrate fixing member 5. A flexible substrate fixing member 6 is fixed with screws to the opposite end of the flexible substrate fixing member 5 to the side to which the optical head unit 7 is connected, with the flexible substrate 4 interposed therebetween. At this time, each member is positioned by passing screws through the positioning portions 4a, 4b of the flexible substrate 4. The flexible substrate fixing member 6 has a function of shielding a portion of the flexible substrate 4 that transmits a weak signal.
第３図は光学ヘッドユニット７の移動方向と７レキシプ
ル基板４のたわみ方向とを含む面におけるフレキシブル
基板屈曲部の固定範囲を示す側面図である。FIG. 3 is a side view showing the fixing range of the flexible substrate bending portion in a plane including the moving direction of the optical head unit 7 and the bending direction of the flexiple substrate 4. FIG.
図に示す様に、光学ヘッドユニット７の移動方向（図示
する矢印方向）に対してフレキシブル基板４の屈曲部が
屈曲方向に向けて３０〜９０の範囲（本実施例では約６
０）で固定されていることにより、フレキシブル基板４
の屈曲角度は第４図の従来例に行なわれてきたフレキシ
ブル基板４の耐久性を重視した講造よシさらに屈曲Ｒを
大きくとることが可能となシ、更に屈曲部の屈曲角度は
約半分以下となシ、該フレキシブル基板の耐久性を飛躍
的に向上させることができる。As shown in the figure, the bending part of the flexible substrate 4 is in the range of 30 to 90 degrees (in this embodiment, about 6
0), the flexible substrate 4
The bending angle of the bending part is different from that of the conventional example shown in Fig. 4, which emphasizes the durability of the flexible substrate 4. Furthermore, it is possible to take a larger bending radius, and the bending angle of the bending part is about half that of the conventional example shown in Fig. 4. As described below, the durability of the flexible substrate can be dramatically improved.
又、スペース効率は第５図に示す如く耐久性を犠牲にし
たスペースでも十分余裕を持って配置することが可能で
あシ、又、上述の様にフレキシブル基板を固定すること
による耐久性の向上から、屈曲部の裏打ちを必要としな
いためフレキシブル基板のコストダウンを図ると共にフ
レキシブル基板反力の低減及び経時によるフレキシブル
基板反力の変化を同時に解決することが可能となる。Furthermore, as shown in Fig. 5, the space efficiency is such that it is possible to provide sufficient space even at the cost of durability, and as mentioned above, durability can be improved by fixing the flexible substrate. Therefore, since lining of the bent portion is not required, it is possible to reduce the cost of the flexible substrate, and at the same time, it is possible to reduce the reaction force of the flexible substrate and to solve the problem of changes in the reaction force of the flexible substrate over time.
以上の実施例ではフレキシブル基板の固定をビス止めに
よシ行うものを説明してきたが、本発明にこれる限る必
要はなく、固定方法はブツシュナツトや板バネで固定す
ることも可能である。In the above embodiments, the flexible substrate is fixed by screws, but the present invention is not limited to this, and the fixing method can also be a bush nut or a plate spring.
第６図は片側のみビス止め、第７図はプツシ−ナツトを
用いたフレキシブル基板固定部材の分解斜視図であシ、
第８図及び第９図はそれぞれ異なる板バネを用いたフレ
キシブル基板固定部材の分解斜視図である。FIG. 6 is an exploded perspective view of a flexible board fixing member using screws on only one side, and FIG. 7 is an exploded perspective view of a flexible board fixing member using push nuts.
FIGS. 8 and 9 are exploded perspective views of flexible board fixing members using different leaf springs, respectively.
尚、フレキシブル基板固定部材はモールド部品等、重量
にあまシ影響のない部品で構成することが可能である。Incidentally, the flexible board fixing member can be made of parts such as molded parts that have no significant influence on weight.
以上詳細且つ具体的に説明した様に、外部ノイズから微
弱信号を守るシールド板によってフレキシブル基板を位
置決め固定することによシ、外部ノイズの影響を少なく
することができる。また、本発明によれば軽負荷の作動
を必要とする光学ヘッドユニットの重量を増す事なく又
、フレキシブル基板の耐久性向上の為の裏打ちを廃止す
ることができ、７レキシプル基板反力を軽減し、反力の
経時変化を無くすと共に、７レキシプル基板のコストダ
ウンを行なっても耐久性を低下させる事がなく、基本性
能を維持向上すると共に、７・−フッ・イトのノやツケ
ージを実現し、さらに小型化を可能にすることができる
。As described above in detail and specifically, by positioning and fixing the flexible substrate with a shield plate that protects weak signals from external noise, the influence of external noise can be reduced. In addition, according to the present invention, it is possible to eliminate the lining for improving the durability of the flexible substrate without increasing the weight of the optical head unit that requires light-load operation, and to reduce the reaction force of the 7-lexiple substrate. In addition to eliminating the change in reaction force over time, the durability does not decrease even if the cost of the 7-lex pull board is reduced, maintaining and improving the basic performance, and realizing the 7-foot structure. However, it is possible to further reduce the size.
第１図は本発明に係るフレキシブル基板固定装置の実施
例を丞す斜視図、第２図は本発明を説明するためのフレ
キシブル基板固定部材の分解斜視図、第３図は光学ヘッ
ドユニットの移動方向とフレキシブル基板のたわみ方向
とを含む面におけるフレキシブル基板屈曲部の固定範囲
を示す側面図、第４図及び第５図は従来のフレキシブル
基板の設置状態を示す側面図、第６図、第７図、第８図
及び第９図はそれぞれ本発明の他の実施例を示すフレキ
シブル基板固定部材の分解斜視図、第１０図は従来の光
学ヘッドユニットを示す斜視図である。
１ニアクチ為エータユニツト、２：半導体レーザーユニ
ット、３：リニアセンサー ４：フレキシブル基板、５
及び６：７し中シブル基板固定部材、７：光学ヘッドユ
ニット。
代理人 弁理士 山 下 穣 平
第
図
第
図
第４
図
第５図
第
図
第
？
図
’Ｍ １０
図FIG. 1 is a perspective view of an embodiment of a flexible substrate fixing device according to the present invention, FIG. 2 is an exploded perspective view of a flexible substrate fixing member for explaining the present invention, and FIG. 3 is a diagram showing movement of an optical head unit. FIGS. 4 and 5 are side views showing the fixing range of the bent portion of the flexible board in a plane including the bending direction and the bending direction of the flexible board. FIGS. 4 and 5 are side views showing the installation state of the conventional flexible board, and FIGS. 8 and 9 are exploded perspective views of flexible substrate fixing members showing other embodiments of the present invention, and FIG. 10 is a perspective view of a conventional optical head unit. 1 Near actuator unit, 2: Semiconductor laser unit, 3: Linear sensor 4: Flexible substrate, 5
and 6: 7 medium board fixing member, 7: optical head unit. Agent Patent Attorney Jo Taira Yamashita Figure 4 Figure 5 Figure 5 ? Figure'M 10 Figure
Claims (1)
に電気的に接続されており他端を該光学ヘッドユニット
に対し相対的に固定されている情報記録再生装置に電気
的に接続されているフレキシブル基板を位置決め固定す
る部材が、フレキシブル基板内を通過する電気信号を外
部ノイズから守るシールド板の機能を有していることを
特徴とする、フレキシブル基板固定装置。(1) One end is electrically connected to a movable optical head unit, and the other end is electrically connected to an information recording/reproducing device that is fixed relative to the optical head unit. A flexible substrate fixing device, characterized in that a member for positioning and fixing the flexible substrate has a function of a shield plate that protects electrical signals passing through the flexible substrate from external noise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63193490A JP2728209B2 (en) | 1988-08-04 | 1988-08-04 | Flexible board fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63193490A JP2728209B2 (en) | 1988-08-04 | 1988-08-04 | Flexible board fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0244525A true JPH0244525A (en) | 1990-02-14 |
| JP2728209B2 JP2728209B2 (en) | 1998-03-18 |
Family
ID=16308906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63193490A Expired - Lifetime JP2728209B2 (en) | 1988-08-04 | 1988-08-04 | Flexible board fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2728209B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7201703B2 (en) | 2001-11-08 | 2007-04-10 | Hitachi, Ltd. | Gear type speed change unit control device, control method, and automobile |
| US7467396B2 (en) * | 2004-06-28 | 2008-12-16 | Benq Corporation | Disc drive and flexible cable assembly therein |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62142796U (en) * | 1986-03-03 | 1987-09-09 | ||
| JPS6378396U (en) * | 1986-11-12 | 1988-05-24 |
-
1988
- 1988-08-04 JP JP63193490A patent/JP2728209B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62142796U (en) * | 1986-03-03 | 1987-09-09 | ||
| JPS6378396U (en) * | 1986-11-12 | 1988-05-24 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7201703B2 (en) | 2001-11-08 | 2007-04-10 | Hitachi, Ltd. | Gear type speed change unit control device, control method, and automobile |
| US7467396B2 (en) * | 2004-06-28 | 2008-12-16 | Benq Corporation | Disc drive and flexible cable assembly therein |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2728209B2 (en) | 1998-03-18 |
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