JPS63140465A - Head feeding mechanism - Google Patents
Head feeding mechanismInfo
- Publication number
- JPS63140465A JPS63140465A JP28647986A JP28647986A JPS63140465A JP S63140465 A JPS63140465 A JP S63140465A JP 28647986 A JP28647986 A JP 28647986A JP 28647986 A JP28647986 A JP 28647986A JP S63140465 A JPS63140465 A JP S63140465A
- Authority
- JP
- Japan
- Prior art keywords
- head
- needle
- lead screw
- fixed
- feeding mechanism
- 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
- 230000003287 optical effect Effects 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 241001057181 Orcus Species 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
Landscapes
- Moving Of Heads (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は・磁気メモリ、光メモリのヘッド送り機構に関
する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a head feeding mechanism for magnetic memory and optical memory.
従来・ヘッド送り機構にモータとリードスクリューを用
いた例としては、第３図に示すものがある。ヘッド３ｏ
１は、支持シャ７）３０２によって支持され、ニードル
３ｏ３と押え′ばね５０４がリードスクリュー３ｏ５を
上下からはさんでいる◎このときリードスクリューはモ
ータ５０’ ６のシャフトに固定され回転する構造にな
りている◇〔発明が解決しようとする問題点〕
しかし従来技術では、リードスクリューをニードルと押
えばねではさむため、ばねの弾性変形（（よってヘッド
がシャフトを中心にして回転変位を生じる可能性が有り
、特にヘッドを高速で移動させる場合には回転変位が生
じゃすく、磁気メモリではヘッドがメディアに必要以上
に押し付けられ、光メモリではヘッドの上下によりて対
物゛レンズが上下に振動してフォーカスずれを起こし、
ヘッドアクセス時にジャスト７オーカスを再びサーチす
る必要が生じるとアクセスタイムが増大してしまう・ま
た、押えばねを用いると押圧力かばらつき易く、ヘッド
送り機構の動特性が一定しにくい。An example of a conventional head feeding mechanism using a motor and a lead screw is shown in FIG. head 3o
1 is supported by the support shaft 7) 302, and the needle 3o3 and presser spring 504 sandwich the lead screw 3o5 from above and below. At this time, the lead screw is fixed to the shaft of the motor 50'6 and rotates. ◇ [Problem to be solved by the invention] However, in the conventional technology, since the lead screw is sandwiched between the needle and the pressing spring, elastic deformation of the spring ((therefore, there is a possibility that the head rotates around the shaft) Yes, especially when moving the head at high speed, rotational displacement is likely to occur, and with magnetic memory, the head is pressed against the media more than necessary, and with optical memory, the objective lens vibrates up and down due to the vertical movement of the head, resulting in focus deviation. wake up,
If it is necessary to search for the just 7 orcus again when accessing the head, the access time will increase. Also, if a pressing spring is used, the pressing force tends to vary, making it difficult to keep the dynamic characteristics of the head feeding mechanism constant.
そこで本発明はこのような問題点を解決するためのもの
でその目的とするところは、磁気メモリ、光メモリのヘ
ッド送りの手段として、モータとリードスクリューを用
いる場合にヘッドの上下動が少なく、低負荷な回転−直
進変換を可能としたヘッド送り機構を提供する所にある
。The present invention has been developed to solve these problems, and its purpose is to reduce vertical movement of the head when using a motor and lead screw as means for moving the head of magnetic memory or optical memory. The object of the present invention is to provide a head feeding mechanism that enables heavy rotational-linear conversion.
本発明のヘッド送り機構は、磁気メモリ、光メモリのヘ
ッドを、モータとリードスクリューによって駆動するヘ
ッド送り機構において、前記ヘッドに固定した１本の固
定ニードルと、ニードル調整部品に固定され前記リード
スクリューとの接触状態を調整した後に複数の固定ネジ
によって前記ヘッドに固定される可調整ニードルの、２
本のニードルが前記リードスクリューとネジ付偶をなす
ことを特徴とする〇
〔実施例〕
以下本発明について図面に基づいて詳細に説明する◇
第１図は本発明のヘッド送り機構の平面図で、ヘッド１
は支持シャフト２によって支持され、ヘッドに固定され
た固定ニードル６と可調整ニードル４がリードスクリュ
ー５を上下からはさみ、モータ６の回転をヘッドの直進
に変換している０可調整ニードルはニードル調整部品７
に固定され、調整ネジ８，９によって、リードスクリュ
ーとニードルが、すきまが無い状態で滑らかに動くよう
に調整して固定する。第２図は本発明のヘッド送り機構
の何面図で、ニードル調整部品とヘッドの間には、調整
ボール１０が介在しているために２本の調整ネジの締め
加減によって可調整ニードルの固定状態を調整すること
が可能となっている。The head feeding mechanism of the present invention drives a head of a magnetic memory or an optical memory by a motor and a lead screw, and includes one fixed needle fixed to the head, and a fixed needle fixed to the needle adjusting part and the lead screw. 2 of the adjustable needles are fixed to the head by a plurality of fixing screws after adjusting the contact state of the adjustable needles;
It is characterized by the above -mentioned lead screw and a screw -accompaniment with screws. , head 1
is supported by a support shaft 2, and a fixed needle 6 fixed to the head and an adjustable needle 4 sandwich the lead screw 5 from above and below, converting the rotation of the motor 6 into straight movement of the head.The adjustable needle is a needle adjustment mechanism. Part 7
The lead screw and needle are adjusted and fixed using adjustment screws 8 and 9 so that they move smoothly without any clearance. FIG. 2 is a cross-sectional view of the head feeding mechanism of the present invention. Since an adjustment ball 10 is interposed between the needle adjustment part and the head, the adjustable needle is fixed by tightening two adjustment screws. It is possible to adjust the state.
以上述べたように本発明によれば、リードスクリューを
２本のニードルではさむこと罠よって磁気メモリ、光メ
モリのヘッド送り機構にモータとリードスクリューを用
いる場合に問題となるバックラッシを極めて少なくする
ことが可能で・従来の押えばねを用いた方法で生じたヘ
ッドの支持シャフト回りの回転を無くすことが可能とな
るため、磁気メモリにおいてはヘッドがメディアに必要
以上に押し付けられることが無く、光メモリにおいては
対物レンズの上下振動が避けられるので、アクセス時に
フォーカスずれを起こすことが少ない。As described above, according to the present invention, by sandwiching the lead screw between two needles, backlash, which is a problem when using a motor and lead screw in the head feeding mechanism of magnetic memory or optical memory, can be extremely reduced. - It is possible to eliminate the rotation of the head around the support shaft that occurs with the conventional method using a pressing spring, so in magnetic memory the head is not pressed against the media more than necessary, and in optical memory Since vertical vibration of the objective lens is avoided, there is less chance of defocusing during access.
また１リードスクリエーとニードルの接触状態を調整す
ることが可能であるため摩擦負荷が小さい状態でニード
ルを固定することで、モータの消費電力を抑えることが
できる。Furthermore, since it is possible to adjust the contact state between the 1-lead screier and the needle, the power consumption of the motor can be suppressed by fixing the needle in a state where the frictional load is small.
第１図は、本発明のヘッド送り機構の平面図Ｏ第２図は
、本発明のヘッド送り機構の側面図Ｏ第３図は、従来の
ヘッド送り機構の平面図。
以 上
出願人 セイコーエプソン株式会社
代理人 弁理士 最 上 務 池１名
紗 ７ 図
葛３ 口FIG. 1 is a plan view of the head feeding mechanism of the present invention. FIG. 2 is a side view of the head feeding mechanism of the present invention. FIG. 3 is a plan view of a conventional head feeding mechanism. Applicant Seiko Epson Co., Ltd. Agent Patent Attorney Tsutomu Mogami Ike 1 Mesa 7 Figures 3 mouths
Claims (1)
モータ）とリードスクリューによって駆動するヘッド送
り機構において、前記ヘッドに固定した１本の固定ニー
ドルと、ニードル調整部品に固定され前記リードスクリ
ューとの接触状態を調整した後に複数の固定ネジによっ
て前記ヘッドに固定される可調整ニードルの、２本のニ
ードルが前記リードスクリューとネジ対偶をなすことを
特徴とするヘッド送り機構。In a head feeding mechanism in which a magnetic memory or optical memory head is driven by a rotary motor (hereinafter referred to as a motor) and a lead screw, one fixed needle fixed to the head contacts the lead screw fixed to a needle adjustment component. A head feeding mechanism characterized in that two needles of the adjustable needle are fixed to the head by a plurality of fixing screws after adjusting the state, and the two needles form a screw pair with the lead screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28647986A JPS63140465A (en) | 1986-12-01 | 1986-12-01 | Head feeding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28647986A JPS63140465A (en) | 1986-12-01 | 1986-12-01 | Head feeding mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63140465A true JPS63140465A (en) | 1988-06-13 |
Family
ID=17704923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28647986A Pending JPS63140465A (en) | 1986-12-01 | 1986-12-01 | Head feeding mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63140465A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0467243U (en) * | 1990-10-15 | 1992-06-15 | ||
| US5191575A (en) * | 1989-03-06 | 1993-03-02 | Tanashin Denki Co., Ltd. | Plate spring and nut interconnecting for use in an optical pick-up moving apparatus |
-
1986
- 1986-12-01 JP JP28647986A patent/JPS63140465A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5191575A (en) * | 1989-03-06 | 1993-03-02 | Tanashin Denki Co., Ltd. | Plate spring and nut interconnecting for use in an optical pick-up moving apparatus |
| JPH0467243U (en) * | 1990-10-15 | 1992-06-15 | ||
| JP2502432Y2 (en) * | 1990-10-15 | 1996-06-26 | 群馬日本電気株式会社 | Head feeding mechanism of medium recording device |
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