JPH0541043A - Head carriage feed device - Google Patents

Head carriage feed device

Info

Publication number
JPH0541043A
JPH0541043A JP19519391A JP19519391A JPH0541043A JP H0541043 A JPH0541043 A JP H0541043A JP 19519391 A JP19519391 A JP 19519391A JP 19519391 A JP19519391 A JP 19519391A JP H0541043 A JPH0541043 A JP H0541043A
Authority
JP
Japan
Prior art keywords
lead screw
screw shaft
stopper
head carriage
axis
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
Application number
JP19519391A
Other languages
Japanese (ja)
Inventor
Takeshi Masutani
武 増谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP19519391A priority Critical patent/JPH0541043A/en
Publication of JPH0541043A publication Critical patent/JPH0541043A/en
Pending legal-status Critical Current

Links

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  • Moving Of Heads (AREA)

Abstract

PURPOSE:To reduce the length of a lead screw axis by providing a leaf spring through a movable piece on the upper side of a stopper, keeping the pressing function of the leaf spring and by placing the stopper and the leaf spring in the same place with respect to the axial direction. CONSTITUTION:A lead screw axis 1 transmits the leaf spring 13 force to an engagement piece 4 through a movable piece 12. Therefore, when the axis 1 rotates, a screw thread 1a moves along the axis direction and the engagement piece 4 and a head carriage make the same motion. Furthermore, if the device is accelerated, a force is generated in the axial direction between the carriage and the axis 1, the engagement piece 4 tends to drop out from the thread 1a, however, a stopper 11 prevents it. Having the configuration in which a portion of the carriage that engages to the axis 1 and the spring 13 be placed on top of the stopper 11 through the movable piece 12, the size of the portion, that engages to the axis, becomes small and the total length in the direction of the feed is reduced.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は磁気記録装置等に用いら
れるヘッドキャリッジ送り装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head carriage feeding device used in a magnetic recording device or the like.

【0002】[0002]

【従来の技術】従来のヘッドキャリッジ送り装置(以下
単にヘッド送り装置と記す)について、以下に図面によ
り説明する。図2はフロッピーディスク駆動装置におけ
る従来のヘッド送り装置の概略正面図、図3は図2に示
す要部Aの正面断面図である。図2において、1はリー
ドスクリュー軸、2はリードスクリュー軸1と一体に形
成されているロータ軸を有するステッピングモータ、3
はヘッドキャリッジ、4はリードスクリュー軸1の螺旋
溝1aと係合するヘッドキャリッジ3に取り付けた係合
子、5はヘッドキャリッジ3に取り付けた磁気ヘッド、
6はヘッドキャリッジ3を摺動自在に支持するためのガ
イド軸である。リードスクリュー軸1とヘッドキャリッ
ジ3とが係合する部分(A部)の詳細は、図3に示すよ
うに、リードスクリュー軸1の螺旋溝1aに係合子4を
押圧するための板ばね7と、係合子4が前記螺旋溝1a
からはずれないようにするためのストッパー8とをそれ
ぞれヘッドキャリッジ3に取り付け、リードスクリュー
軸1がストッパー8とヘッドキャリッジ3のガイド部9
に挟まれた構成となっている。
2. Description of the Related Art A conventional head carriage feeding device (hereinafter simply referred to as a head feeding device) will be described below with reference to the drawings. 2 is a schematic front view of a conventional head feeding device in a floppy disk drive device, and FIG. 3 is a front sectional view of a main part A shown in FIG. In FIG. 2, 1 is a lead screw shaft, 2 is a stepping motor having a rotor shaft formed integrally with the lead screw shaft 1, 3
Is a head carriage, 4 is an engaging element attached to the head carriage 3 that engages with the spiral groove 1a of the lead screw shaft 1, and 5 is a magnetic head attached to the head carriage 3,
Reference numeral 6 is a guide shaft for slidably supporting the head carriage 3. As shown in FIG. 3, details of a portion (A portion) where the lead screw shaft 1 and the head carriage 3 engage with each other are a leaf spring 7 for pressing the engaging element 4 into the spiral groove 1 a of the lead screw shaft 1. , The engaging element 4 is the spiral groove 1a
A stopper 8 and a stopper 8 are attached to the head carriage 3 so that the lead screw shaft 1 and the guide portion 9 of the head carriage 3 do not come off.
It is sandwiched between.

【0003】このヘッド送り装置の動作は、ステッピン
グモータ2の回転力によりリードスクリュー軸1が回転
すると、螺旋溝1aに係合している係合子4、すなわち
これを取り付けているヘッドキャリッジ3が移動する。
したがって、この移動により磁気ヘッド5を所定の位置
に移動させることができる。
In the operation of this head feeding device, when the lead screw shaft 1 is rotated by the rotational force of the stepping motor 2, the engaging element 4 engaged with the spiral groove 1a, that is, the head carriage 3 having the engaging element 4 moved. To do.
Therefore, by this movement, the magnetic head 5 can be moved to a predetermined position.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、前記従
来のヘッド送り装置では、板ばね7とストッパー8とが
リードスクリュー軸1の軸方向に対して並置されている
ため、リードスクリュー軸1の長さを短くしようとして
も軸方向の長さは板ばね7およびストッパー8の幅を併
せたものより短くはできない。このため、リードスクリ
ュー軸1の長さは、ヘッドキャリッジ3の移動距離と板
ばね7およびストッパー8の幅とを加算した長さが最低
限必要であり、この長さがフロッピーディスク駆動装置
の奥行き寸法に制約を与えてその短縮化を図ることが困
難となっていた。
However, since the leaf spring 7 and the stopper 8 are juxtaposed with respect to the axial direction of the lead screw shaft 1 in the above-described conventional head feeding device, the length of the lead screw shaft 1 is long. However, the length in the axial direction cannot be made shorter than the combined width of the leaf spring 7 and the stopper 8. Therefore, the length of the lead screw shaft 1 is at least the sum of the moving distance of the head carriage 3 and the widths of the leaf spring 7 and the stopper 8, and this length is the depth of the floppy disk drive. It has been difficult to limit the size and reduce the size.

【0005】本発明はこのような従来の課題を解決する
もので、奥行き寸法の小さい磁気記録装置を実現するた
めのヘッド送り装置を提供することを目的とする。
The present invention solves such a conventional problem, and an object thereof is to provide a head feeding device for realizing a magnetic recording device having a small depth dimension.

【0006】[0006]

【課題を解決するための手段】この目的を達成するため
に本発明は、ヘッドキャリッジに設けられた係合子をリ
ードスクリュー軸の螺旋溝に係合させ、前記リードスク
リュー軸の回転によりヘッドキャリッジを直線方向に移
送するヘッドキャリッジ送り装置において、前記係合子
を螺旋溝に押圧するための可動子と、この可動子を挿入
してリードスクリュー軸に対して直角方向に摺動自在に
保持する孔を設けたストッパーと、前記可動子を前記リ
ードスクリュー軸に対して押圧するための板ばねとを有
し、前記係合子と可動子と板ばねが前記リードスクリュ
ー軸の軸方向に対してほぼ同一位置の配置されている構
成のヘッドキャリッジ送り装置とする。
In order to achieve this object, according to the present invention, an engaging member provided on a head carriage is engaged with a spiral groove of a lead screw shaft, and the head carriage is rotated by the rotation of the lead screw shaft. In a head carriage feeding device that moves in a linear direction, a mover for pressing the engaging element into a spiral groove and a hole for holding the mover slidably in a direction perpendicular to the lead screw shaft are provided. A stopper provided and a leaf spring for pressing the mover against the lead screw shaft, and the engagement element, the mover and the leaf spring are at substantially the same position in the axial direction of the lead screw shaft. It is assumed that the head carriage feeding device is configured as described above.

【0007】[0007]

【作用】この構成により、ストッパーの上側に可動子を
介して板ばねを設けることにより板ばねの押圧機能は保
たれたままであり、従来のストッパーと板ばねとをリー
ドスクリュー軸の軸方向に並置する構成とは異なり、ス
トッパ−と板ばねとが前記軸方向に対してほぼ同一の位
置に重ねて配しているので、リードスクリュー軸の長さ
を短縮することができる。
With this structure, the plate spring is provided above the stopper via the mover so that the pressing function of the plate spring is maintained, and the conventional stopper and the plate spring are juxtaposed in the axial direction of the lead screw shaft. Unlike the configuration described above, since the stopper and the leaf spring are superposed at substantially the same position in the axial direction, the length of the lead screw shaft can be shortened.

【0008】[0008]

【実施例】以下、本発明の一実施例について図1を用い
て説明する。ただし、図1において、図2および図3と
同一の部分は同一の符号を付してあり、その同一部分に
ついての説明は省略する。図1はヘッド送り装置におけ
るヘッドキャリッジの係合する部分の詳細図で、(a)
はその正面断面図、(b)はその側面図である。図1に
おいて、11はストッパーでヘッドキャリッジ3と一体
に形成されている。12は可動子で、ストッパー11に
設けられた孔11aに摺動自在に挿入されており、13
の板ばねによりリードスクリュー軸1の方向へ押圧され
ている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. However, in FIG. 1, the same parts as those in FIGS. 2 and 3 are designated by the same reference numerals, and the description of the same parts will be omitted. FIG. 1 is a detailed view of an engaging portion of a head carriage in a head feeding device.
Is a front sectional view thereof, and (b) is a side view thereof. In FIG. 1, 11 is a stopper, which is formed integrally with the head carriage 3. Reference numeral 12 is a mover, which is slidably inserted into a hole 11a provided in the stopper 11,
Is pressed in the direction of the lead screw shaft 1.

【0009】次に、本実施例の動作について説明する。
リードスクリュー軸1は板ばね13の力を可動子12を
介して受け、係合子4に対して押圧される。このため、
リードスクリュー軸1が回転することによりその螺旋溝
1aがその軸方向に移動し、係合子4およびこれと一体
のヘッドキャリッジ3は螺旋溝と同じ動きをすることが
できる。また、ヘッド送り装置全体に衝撃等による加速
度が加わったとき、ヘッドキャリッジ3とリードスクリ
ュー軸1との間にリードスクリュー軸1の軸方向の力が
発生し、係合子4は螺旋溝1aから脱落しようとする
が、ストッパー11があるために完全に脱落することは
防止される。
Next, the operation of this embodiment will be described.
The lead screw shaft 1 receives the force of the leaf spring 13 via the mover 12 and is pressed against the engaging element 4. For this reason,
When the lead screw shaft 1 rotates, the spiral groove 1a moves in the axial direction, and the engagement element 4 and the head carriage 3 integrated with the engagement element 4 can perform the same movement as the spiral groove. Further, when acceleration due to impact or the like is applied to the entire head feeding device, an axial force of the lead screw shaft 1 is generated between the head carriage 3 and the lead screw shaft 1, so that the engaging element 4 falls out of the spiral groove 1a. However, the stopper 11 prevents the stopper 11 from completely falling off.

【0010】ストッパー11とガイド部9はリードスク
リュー軸1をとり囲むように一体に構成されていて、強
度的にも十分強く、従来よりもリードスクリュー軸1の
軸方向の幅を小さくすることができる。また、板ばね1
3はストッパー11の上に配置してあってストッパー1
1の幅内に収めることができるため、リードスクリュー
軸1の全長に占めるこの部分の寸法を小さくすることが
できる。したがって、リードスクリュー軸1自体の長さ
も短くでき、磁気記録装置全体の奥行寸法を小さくする
ことができる。
The stopper 11 and the guide portion 9 are integrally formed so as to surround the lead screw shaft 1, and are sufficiently strong in strength, so that the width of the lead screw shaft 1 in the axial direction can be made smaller than in the conventional case. it can. Also, the leaf spring 1
3 is arranged on the stopper 11 and the stopper 1
Since it can be accommodated within the width of 1, the size of this portion occupying the entire length of the lead screw shaft 1 can be reduced. Therefore, the length of the lead screw shaft 1 itself can be shortened, and the depth dimension of the entire magnetic recording device can be reduced.

【0011】[0011]

【発明の効果】本発明は、上記実施例より明らかなよう
に、リードスクリュー方式によるヘッド送り装置におい
て、ヘッドキャリッジのリードスクリュー軸と係合する
部分の構成をストッパーの上に可動子を介して板ばねを
配置する構成とすることにより、リードスクリュー軸と
係合する部分の寸法を小さくし、送り方向の全長を短く
できるという利点を有する。この結果、フロッピーディ
スク駆動装置の奥行寸法を短縮することができ、小型化
できる。
As is apparent from the above-described embodiment, the present invention provides a lead screw type head feeding device in which the structure of the portion of the head carriage that engages with the lead screw shaft is provided on the stopper via the mover. By arranging the leaf springs, there is an advantage that the size of the portion that engages with the lead screw shaft can be reduced and the overall length in the feeding direction can be shortened. As a result, the depth dimension of the floppy disk drive device can be shortened and the size can be reduced.

【図面の簡単な説明】[Brief description of drawings]

【図1】(a)本発明の一実施例におけるヘッドキャリ
ッジの要部正面断面図 (b)同じく側面図
FIG. 1A is a front sectional view of a main part of a head carriage according to an embodiment of the present invention, and FIG.

【図2】従来のヘッドキャリッジ送り装置の概略正面図FIG. 2 is a schematic front view of a conventional head carriage feeding device.

【図3】図2に示す要部Aの正面断面図3 is a front cross-sectional view of the main part A shown in FIG.

【符号の説明】[Explanation of symbols]

1 リードスクリュー軸 1a 螺旋溝 3 ヘッドキャリッジ 4 係合子 5 磁気ヘッド 11 ストッパー 11a 孔 12 可動子 13 板ばね 1 Lead Screw Shaft 1a Spiral Groove 3 Head Carriage 4 Engager 5 Magnetic Head 11 Stopper 11a Hole 12 Mover 13 Leaf Spring

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】ヘッドキャリッジに設けられた係合子をリ
ードスクリュー軸の螺旋溝に係合させ、前記リードスク
リュー軸の回転によりヘッドキャリッジを直線方向に移
送するヘッドキャリッジ送り装置において、前記係合子
を螺旋溝に押圧するための可動子と、この可動子を挿入
してリードスクリュー軸に対して直角方向に摺動自在に
保持する孔を設けたストッパーと、前記可動子を前記リ
ードスクリュー軸に対して押圧するための板ばねとを有
し、前記係合子と可動子と板ばねが前記リードスクリュ
ー軸の軸方向に対してほぼ同一位置に配置されているこ
とを特徴とするヘッドキャリッジ送り装置。
1. A head carriage feeding device for engaging an engaging element provided on a head carriage with a spiral groove of a lead screw shaft and transferring the head carriage in a linear direction by rotation of the lead screw shaft. A mover for pressing the spiral groove, a stopper provided with a hole for inserting the mover and holding the mover slidably in a direction perpendicular to the lead screw shaft, and the mover with respect to the lead screw shaft. And a leaf spring for pressing the head carriage feeding device, wherein the engaging element, the movable element, and the leaf spring are arranged at substantially the same position in the axial direction of the lead screw shaft.
JP19519391A 1991-08-05 1991-08-05 Head carriage feed device Pending JPH0541043A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19519391A JPH0541043A (en) 1991-08-05 1991-08-05 Head carriage feed device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19519391A JPH0541043A (en) 1991-08-05 1991-08-05 Head carriage feed device

Publications (1)

Publication Number Publication Date
JPH0541043A true JPH0541043A (en) 1993-02-19

Family

ID=16337002

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19519391A Pending JPH0541043A (en) 1991-08-05 1991-08-05 Head carriage feed device

Country Status (1)

Country Link
JP (1) JPH0541043A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5889638A (en) * 1994-12-28 1999-03-30 Teac Corporation Head carriage with restraining member that engages lead screw during a shock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5889638A (en) * 1994-12-28 1999-03-30 Teac Corporation Head carriage with restraining member that engages lead screw during a shock

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