JPS6120655Y2

JPS6120655Y2 -

Info

Publication number: JPS6120655Y2
Application number: JP15849178U
Authority: JP
Priority date: 1978-11-15
Filing date: 1978-11-15
Publication date: 1986-06-21
Also published as: JPS5575838U

Description

【考案の詳細な説明】本考案はサウンドトラツク再生式８ミリ映画映
写機等に用いられる磁気ヘツド支持装置に関し、
ヘツドの位置決めを容易且つ正確に行ない得る構
造としたものである。[Detailed Description of the Invention] The present invention relates to a magnetic head support device used in a soundtrack reproduction type 8mm movie projector, etc.
This structure allows the head to be positioned easily and accurately.

以下本考案の一実施例を図に基いて説明する。
１はケースで、これは両側に固定用耳片３，３を
突出させた合成樹脂製ベース２と、その周囲を包
む板金製シールド４とからなる。シールド４はベ
ース２をすつかり包む訳ではなく、ケース１の正
面においてはベース２は露出しており、そこに窓
５が設けられている。６はケース１内に挿入さ
れ、窓５からポールピース７を露出させた磁気ヘ
ツドである。磁気ヘツド６は次のようにして支え
られる。まず磁気ヘツド６の下面とベース２の間
に第１の圧縮コイルばね８を挿入し、磁気ヘツド
６を上方に持上げると共に、第１の調整ねじ９を
２本、ケース１の上面にねじ込み、その先端を磁
気ヘツド６の上面に当接させる。調整ねじ９，９
を転させると磁気ヘツド６は上下に浮き沈みす
る。第１図に示すように録音帯１０は水平方向に
移動するから、磁気ヘツド６はそれと直角方向の
動きを第１の調整ねじ９，９によつて与えられ、
録音帯１０の幅方向に位置調整されることにな
る。次に第３図に見られる如く磁気ヘツド６の一
側面に当接する突部１をベース２に形設し、磁気
ヘツド６の他側面とベース２の間には第２の圧縮
コイルばね１２を挿入する。突起１１とばね１２
とは一線上に並んでおらず位置がずれているた
め、磁気ヘツド６には上下浮沈方向を軸とするモ
ーメント、言い換えれば水平面内でのモーメント
がばね１２によつて与えられることになる。１３
は突部１１が支えるのと同じ磁気ヘツド６の側面
を支えるくさびで、ベース２の斜面壁１４と磁気
ヘツド６の間に上下可能に挿入されている。くさ
び１３はばね１２の作用力線を挾んで突起１１と
反対側に配置され、ばね１２によつて生じた前記
モーメントに抗し磁気ヘツド６を支える役目をす
る。磁気ヘツド６と斜面壁１４の間に形成される
空間は上向きに拡がつている。くさび１３の下面
とベース２の間には第３の圧縮コイルばね１５が
挿入されていてくさび１３を常時上方に押上げて
おり、くさび１３の上面には、第１の調整ねじ９
と同じくケース１の上面に螺合した第２の調整ね
じ１６の先端が当接している。今調整ねじ１６を
締込んでくさび１３を下方に押すと、斜面壁１４
が下の方ほどケース１の中央に接近する形になつ
ているため、くさび１３は第２図及び第３図にお
いて左方に移動し、磁気ヘツド６を第３図におい
て時計方向に回動させる。逆に調整ねじ１６を緩
めてくさび１３を上方に移動させればばね１２の
押圧により磁気ヘツド６は第３図において反時計
方向に回動する。従つて調整ねじ１６を回すこと
により磁気ヘツド６の水平面内における角度を変
え、ポールピース７の先端面を正しい角度に合わ
せることができる。 An embodiment of the present invention will be described below with reference to the drawings.
Reference numeral 1 denotes a case, which consists of a synthetic resin base 2 with fixing ears 3, 3 protruding from both sides, and a sheet metal shield 4 surrounding the base 2. The shield 4 does not completely enclose the base 2; the base 2 is exposed at the front of the case 1, and a window 5 is provided there. A magnetic head 6 is inserted into the case 1 and has a pole piece 7 exposed through a window 5. The magnetic head 6 is supported in the following manner. First, insert the first compression coil spring 8 between the lower surface of the magnetic head 6 and the base 2, lift the magnetic head 6 upwards, and screw the two first adjusting screws 9 into the upper surface of the case 1. The tip thereof is brought into contact with the upper surface of the magnetic head 6. Adjustment screw 9,9
When the magnetic head 6 is rotated, the magnetic head 6 moves up and down. As shown in FIG. 1, since the recording band 10 moves horizontally, the magnetic head 6 is given a movement perpendicular thereto by the first adjustment screws 9, 9.
The position will be adjusted in the width direction of the recording band 10. Next, as shown in FIG. 3, a protrusion 1 that contacts one side of the magnetic head 6 is formed on the base 2, and a second compression coil spring 12 is installed between the other side of the magnetic head 6 and the base 2. insert. Protrusion 11 and spring 12
Since the magnetic head 6 is not lined up in line with the magnetic head 6 and is out of position, the spring 12 applies a moment about the up-and-down direction as an axis, in other words, a moment in the horizontal plane. 13
is a wedge that supports the same side surface of the magnetic head 6 as the protrusion 11 supports, and is inserted between the slope wall 14 of the base 2 and the magnetic head 6 so as to be vertically movable. The wedge 13 is placed on the opposite side of the projection 11 across the line of action of the spring 12, and serves to support the magnetic head 6 against the moment generated by the spring 12. The space formed between the magnetic head 6 and the sloped wall 14 expands upward. A third compression coil spring 15 is inserted between the lower surface of the wedge 13 and the base 2 to constantly push the wedge 13 upward, and a first adjustment screw 9 is installed on the upper surface of the wedge 13.
Similarly, the tip of the second adjusting screw 16 screwed onto the upper surface of the case 1 is in contact with the upper surface of the case 1. If you now tighten the adjustment screw 16 and push the wedge 13 downward, the slope wall 14
Since the lower part of the wedge approaches the center of the case 1, the wedge 13 moves to the left in FIGS. 2 and 3, causing the magnetic head 6 to rotate clockwise in FIG. . Conversely, if the adjusting screw 16 is loosened and the wedge 13 is moved upward, the magnetic head 6 will rotate counterclockwise in FIG. 3 due to the pressure of the spring 12. Therefore, by turning the adjustment screw 16, the angle of the magnetic head 6 in the horizontal plane can be changed, and the tip surface of the pole piece 7 can be adjusted to the correct angle.

以上のように本考案では、磁気ヘツドを挿入し
たケースに第１及び第２の調整ねじを同一方向か
らねじ込み、第１の調整ねじにより磁気ヘツドを
浮沈させると共に、第２の調整ねじによりくさび
を介して磁気ヘツドの側面を押し、浮沈方向を軸
とする回動を磁気ヘツドに与えるようにしたもの
であり、磁気ヘツドの位置決めを同一方向からの
ねじ操作で容易且つ正確に行なえるという特長を
有するものである。 As described above, in the present invention, the first and second adjustment screws are screwed into the case into which the magnetic head is inserted from the same direction, and the first adjustment screw raises and lowers the magnetic head, and the second adjustment screw wedges the magnetic head. The device presses the side surface of the magnetic head through the screw, giving the magnetic head rotation about the up-and-down direction, and has the advantage that the magnetic head can be positioned easily and accurately by screw operation from the same direction. It is something that you have.

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

図は本考案磁気ヘツド支持装置の一実施例を示
し、第１図は斜視図、第２図は垂直断面図、第３
図は水平断面図である。１……ケース、５……窓、６……磁気ヘツド、
７……ポールピース、８……第１のばね、９，９
……第１の調整ねじ、１２……第２のばね、１３
……くさび、１６……第２の調整ねじ、１０……
録音帯。 The figures show an embodiment of the magnetic head support device of the present invention, in which Fig. 1 is a perspective view, Fig. 2 is a vertical sectional view, and Fig. 3 is a vertical sectional view.
The figure is a horizontal sectional view. 1... Case, 5... Window, 6... Magnetic head,
7... Pole piece, 8... First spring, 9,9
...First adjustment screw, 12...Second spring, 13
... Wedge, 16 ... Second adjustment screw, 10 ...
recording band.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

正面に窓を有するケースと、前記ケース内に挿
入され、前記窓からポールピースを露出させた磁
気ヘツドと、前記磁気ヘツドを支える第１のばね
と、前記ケースの一側面に螺合し、前記第１のば
ねと協働して磁気ヘツドを録音帯移動方向と直角
に浮き沈みさせる第１の調整ねじと、磁気ヘツド
にその浮沈方向を軸とするモーメントを与える第
２のばねと、前記モーメントに抗し磁気ヘツドを
支えるくさびと、前記第１の調整ねじと同一方向
からケースに螺合し、前記くさびを動かして磁気
ヘツドに回動を生ぜしめる第２の調整ねじとを備
えた磁気ヘツド支持装置。 a case having a window on the front; a magnetic head inserted into the case and having a pole piece exposed through the window; a first spring supporting the magnetic head; a first adjustment screw that cooperates with the first spring to raise and lower the magnetic head perpendicular to the direction of movement of the recording band; a second spring that applies a moment to the magnetic head about the direction in which the magnetic head moves; A magnetic head support comprising: a wedge that supports the magnetic head against the magnetic head; and a second adjusting screw that is screwed into the case from the same direction as the first adjusting screw and moves the wedge to cause the magnetic head to rotate. Device.