JPH0124751Y2 - - Google Patents

Description

【考案の詳細な説明】 (イ) 産業上の利用分野 本考案はVTR（ビデオテープレコーダー）の磁
気ヘツドの支持装置に関する。[Detailed description of the invention] (a) Field of industrial application The present invention relates to a support device for a magnetic head of a VTR (video tape recorder).

(ロ) 従来の技術 VTRにおいて音声及び制御信号用のヘツドと
音声トラツク消去用のヘツドとが一体となつた固
定ヘツドが、位置・傾き等を調整可能にシヤーシ
上に支持されている。実開昭57−71263号公報に
は、その支持装置の一例が開示されている。(b) Prior Art In a VTR, a fixed head, in which a head for audio and control signals and a head for erasing audio tracks are integrated, is supported on a chassis so that its position, tilt, etc. can be adjusted. Japanese Utility Model Application Publication No. 57-71263 discloses an example of such a support device.

前記従来技術は第７図に示す様に固定ヘツド
１′が固定された第１支持板４′を高さ及び傾きが
調整可能に第２支持板１０′に取り付け、２個の
テープガイド２４′，２４′を挾持する様に支持用
支柱３０を介して最下端の第４支持板２８と一体
となつた第３支持板１３′に第２支持板１０′を取
り付け、第４支持板２８とシヤーシ２２′間にス
プリングコイル２９，２９を介して、調整用ネジ
２６，２６をテープガイド２４′，２４′に貫通さ
せて、シヤーシ２２′に圧入固着する様な構成を
とつている。従つて、磁気ヘツドの位置・傾き調
整が容易にでき、また磁気ヘツドの強固な支持が
為せる。 In the prior art, as shown in FIG. 7, a first support plate 4' to which a fixed head 1' is fixed is attached to a second support plate 10' so that its height and inclination can be adjusted, and two tape guides 24' are attached. . Adjustment screws 26, 26 are passed through tape guides 24', 24' through spring coils 29, 29 between chassis 22', and are press-fitted into chassis 22'. Therefore, the position and inclination of the magnetic head can be easily adjusted, and the magnetic head can be firmly supported.

ところが、前記従来技術によると、磁気ヘツド
の強固な支持を為すために、第４支持板２８・支
持用支柱３０が用いられ、またスプリングコイル
２９，２９も別体であるために極めて部品点数が
多く、また薄型化が困難であつた。 However, according to the prior art, the fourth support plate 28 and support column 30 are used to firmly support the magnetic head, and the spring coils 29 and 29 are also separate pieces, resulting in an extremely large number of parts. There were a lot of them, and it was difficult to make them thinner.

(ハ) 考案が解決しようとする問題点 本考案は上述の点に鑑みなされたもので、部品
点数の増加、並びに機器本体の厚みの増加を防止
することを目的とする。(c) Problems to be solved by the invention The present invention was devised in view of the above-mentioned points, and its purpose is to prevent an increase in the number of parts and an increase in the thickness of the main body of the device.

(ニ) 問題点を解決するための手段 本考案は、磁気ヘツドの支持装置であつて、磁
気ヘツドが固定された支持板をシヤーシ上に固定
された複数の支軸に上下動自在に支持し、この支
持板を板バネにて上方向に付勢することを特徴と
する。(d) Means for solving the problems The present invention is a magnetic head support device in which a support plate to which a magnetic head is fixed is supported vertically movably on a plurality of spindles fixed on a chassis. , the support plate is biased upward by a leaf spring.

(ホ) 作用 本考案は、上記の様に構成することにより、磁
気ヘツドの支持が強固に為される。(E) Effect By configuring the present invention as described above, the magnetic head can be firmly supported.

(ヘ) 実施例 以下、図面に従い本考案の一実施例について説
明する。(f) Embodiment An embodiment of the present invention will be described below with reference to the drawings.

第１図〜第６図は本考案に係り、第１図は磁気
ヘツドの支持装置の正面図、第２図は同上面図、
第３図は同分解斜視図、第４図は板バネの側面
図、第５図は同正面図、第６図は板バネに加わる
力を説明する為の図である。 1 to 6 relate to the present invention, in which FIG. 1 is a front view of the magnetic head support device, FIG. 2 is a top view of the same,
3 is an exploded perspective view, FIG. 4 is a side view of the leaf spring, FIG. 5 is a front view thereof, and FIG. 6 is a diagram for explaining the force applied to the leaf spring.

１は音声消去ヘツド２と音声コントロール信号
ヘツド３が一体となつた固定ヘツドであり、第１
支持板４に第１・第２ビス５，６にて螺着固定さ
れている。また、前記第１支持板４は、第３ビス
７及びスプリングコイル８を介した第４ビス９に
より第２支持板１０に螺着固定されている。尚、
前記第２支持板１０には、先端が第１支持板４上
面に当接せる六角穴付止めネジ１１，１１が螺合
され、前記六角穴付止めネジ１１，１１及び第３
ビス７の締め具合により、第１支持板４の第２支
持板１０に対する高さ及び傾きの調整が可能とな
つている。前記第２支持板１０には、長孔１２，
１２が設けられ、前記長孔１２，１２と第３支持
板１３に配設された第１透孔１４，１４を位置合
わせし、第５ビス１５，１５を用いて第２支持板
１０を第３支持板１３に螺着固定する。但し、前
記第５ビス１５，１５を緩める事により、長孔１
２，１２の長手方向の長さと第５ビス１５，１５
の径の差だけ第２支持板１０が第３支持板１３に
対して矢印Ｘ，Ｙ方向に移動可能となり、テープ
走行方向の固定ヘツド１の位置調整が可能とな
る。 Reference numeral 1 designates a fixed head in which a sound erasing head 2 and a sound control signal head 3 are integrated;
It is screwed and fixed to the support plate 4 with first and second screws 5 and 6. Further, the first support plate 4 is screwed and fixed to the second support plate 10 by a fourth screw 9 via a third screw 7 and a spring coil 8. still,
Hexagon socket set screws 11, 11 whose tips abut against the upper surface of the first support plate 4 are screwed into the second support plate 10, and the hexagon socket set screws 11, 11 and the third
The height and inclination of the first support plate 4 relative to the second support plate 10 can be adjusted by tightening the screws 7. The second support plate 10 has elongated holes 12,
12 is provided, and the elongated holes 12, 12 and the first through holes 14, 14 provided in the third support plate 13 are aligned, and the second support plate 10 is connected to the second support plate 10 using the fifth screws 15, 15. 3. Screw and fix to the support plate 13. However, by loosening the fifth screws 15, 15, the long hole 1
2, 12 longitudinal length and 5th screw 15, 15
The second support plate 10 is movable relative to the third support plate 13 in the directions of arrows X and Y by the difference in diameter, and the position of the fixed head 1 in the tape running direction can be adjusted.

１６は板バネであり、中央の湾曲部１７が幅広
となり、中心に位置決め用丸孔１８と、両端に支
軸１９，１９嵌挿用の第２透孔２０，２０を有す
る突出部２１，２１が配設されている。 Reference numeral 16 designates a leaf spring, and the central curved portion 17 is wide, and the projecting portions 21, 21 have a positioning round hole 18 at the center and second through holes 20, 20 at both ends for fitting the support shafts 19, 19. is installed.

シヤーシ２２の所定位置に設けられた突起２２
ａに前記丸孔１８に嵌挿して板バネ１６の位置合
わせをした後、シヤーシ２２に植立した支軸１
９，１９を前記第２透孔２０，２０に嵌挿し、更
にワツシヤ２３，２３・テープガイド２４，２４
及び第３支持板１３に設けた第３透孔２５，２５
に貫通させて、前記第３支持板１３の上面側から
調整ネジ２６，２６にて螺着しシヤーシ２２に第
３支持板１３を固定する。尚、前記調整ネジ２
６，２６によつてヘツド支持装置全体の高さ調整
が可能となる。こうして固定ヘツド１の支持装置
の組立てが完了する。 A protrusion 22 provided at a predetermined position on the chassis 22
After aligning the plate spring 16 by inserting it into the round hole 18 in a,
9, 19 into the second through holes 20, 20, and then insert the washers 23, 23 and tape guides 24, 24.
and third through holes 25, 25 provided in the third support plate 13.
The third support plate 13 is fixed to the chassis 22 by screwing the adjustment screws 26, 26 from the upper surface side of the third support plate 13 through the third support plate 13. In addition, the adjustment screw 2
6 and 26 make it possible to adjust the height of the entire head support device. The assembly of the support device for the fixed head 1 is thus completed.

前述の如く、板バネ１６は中央の湾曲部１７が
幅広であるために、前記板バネ１６の各部に生じ
る応力が矢印Ｃの様に均一となり、また、固定ヘ
ツド１に当接する磁気テープ２７の圧着力等によ
り固定ヘツド１及び支持装置全体を矢印Ａあるい
はＢ方向に回動させようとする力が加わつた場合
に、板バネ１６にはP₁あるいはP₂方向の力が作
用するが、湾曲部１７の幅が広いことにより、板
バネ１６とシヤーシ２２との接触面積が大きくな
り、その結果、矢印Ａ方向及びＢ方向に対する剛
性が増し、固定ヘツド１の強固な支持が為され
る。 As mentioned above, since the central curved part 17 of the leaf spring 16 is wide, the stress generated in each part of the leaf spring 16 is uniform as shown by arrow C, and the stress on the magnetic tape 27 that is in contact with the fixed head 1 is uniform. When a force is applied to rotate the fixed head 1 and the entire support device in the direction of arrow A or B due to a pressure force or the like, a force in the direction _P1 or _P2 is applied to the leaf spring 16, but the bending Since the width of the portion 17 is wide, the contact area between the leaf spring 16 and the chassis 22 is increased, and as a result, the rigidity in the directions of arrows A and B is increased, and the fixed head 1 is firmly supported.

(ト) 考案の効果 上述の如く、本考案によれば最下部の支持板及
び複数個のコイルバネを一個の板バネによつて代
用する事により、部品点数の大幅な削減が可能と
なり、更に磁気ヘツドの強固な支持が為され極め
て実用的価値が高い。(g) Effects of the invention As mentioned above, according to the invention, by substituting a single leaf spring for the lowermost support plate and a plurality of coil springs, it is possible to significantly reduce the number of parts, and further improve magnetic It has strong support from the head and has extremely high practical value.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図〜第６図は本考案に係り、第１図は磁気
ヘツドの支持装置の正面図、第２図は同上面図、
第３図は同分解斜視図、第４図は板バネの側面
図、第５図は同正面図、第６図は板バネに加わる
力を説明する為の図である。また、第７図は従来
例の正面図である。 １……固定ヘツド（磁気ヘツド）、４……第１
支持板、１０……第２支持板、１３……第３支持
板、１９……支軸、１６……板バネ、１７……湾
曲部、２２……シヤーシ、２７……テープ。 1 to 6 relate to the present invention, in which FIG. 1 is a front view of the magnetic head support device, FIG. 2 is a top view of the same,
3 is an exploded perspective view, FIG. 4 is a side view of the leaf spring, FIG. 5 is a front view thereof, and FIG. 6 is a diagram for explaining the force applied to the leaf spring. Moreover, FIG. 7 is a front view of a conventional example. 1... fixed head (magnetic head), 4... first
Support plate, 10... Second support plate, 13... Third support plate, 19... Support shaft, 16... Leaf spring, 17... Curved portion, 22... Chassis, 27... Tape.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 磁気ヘツドを固定した第１支持板と、該第１支
持板が高さ及び傾き調整自在に取り付けられた第
２支持板と、前記第２支持板がテープの走行方向
に位置調整可能に取り付けられた第３支持板と、
シヤーシに固定され前記第３支持板を前記シヤー
シに対して上下動自在に支持する複数の支軸と、
両端に前記支軸を挿嵌する透孔を有し、中央に前
記シヤーシと当接する湾曲部を有し、前記第３支
持板を中間部材を介して前記シヤーシに対して上
方向に付勢する板バネとから成る磁気ヘツド支持
装置。 a first support plate to which a magnetic head is fixed; a second support plate to which the first support plate is attached so as to be adjustable in height and inclination; and the second support plate is attached so as to be adjustable in position in the running direction of the tape. a third support plate;
a plurality of support shafts fixed to the chassis and supporting the third support plate movably up and down with respect to the chassis;
It has a through hole at both ends into which the support shaft is inserted, and has a curved part in the center that comes into contact with the chassis, and urges the third support plate upwardly with respect to the chassis via an intermediate member. A magnetic head support device consisting of a leaf spring.