JPS6336492Y2

JPS6336492Y2 -

Info

Publication number: JPS6336492Y2
Application number: JP10368782U
Authority: JP
Priority date: 1982-07-08
Filing date: 1982-07-08
Publication date: 1988-09-28
Also published as: JPS5910126U

Description

【考案の詳細な説明】本考案は磁気ヘツドのアジマス調整装置に関
し、特に自動アジマス調整装置に用いて離隔した
位置から正確なアジマス調整を行なうことができ
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an azimuth adjustment device for a magnetic head, and is particularly applicable to an automatic azimuth adjustment device that allows accurate azimuth adjustment from a remote location.

以下その一実施例をもつて本考案を説明する。 The present invention will be explained below with reference to one embodiment.

第１図においてアジマス調整機構と共に磁気ヘ
ツド１が載置された摺動基板２は、その長孔２₁，
２₁とシヤシ３上に植立されたガイドピン３₁，３
_１とにより案内されて図の矢印方向Ａ−Ａにおい
て摺動し、磁気ヘツド１が磁気テープ（図示せ
ず）に係合する前進位置と、両者の係合が解除さ
れる後退位置をとる。 In FIG. 1, the sliding substrate 2 on which the magnetic head 1 is placed together with the azimuth adjustment mechanism has its elongated holes 2 ₁ ,
2 ₁ and guide pins 3 ₁ , 3 planted on the chassis 3
₁ , the magnetic head 1 slides in the direction of arrow A--A in the figure, and assumes a forward position where the magnetic head 1 engages with a magnetic tape (not shown) and a retracted position where the engagement between the two is released.

アジマス調整機構は、アジマス調整子４と、こ
のアジマス調整子４の移動により回動される回動
板５と、この回動板５上に配置されると共に、磁
気ヘツド１が載置されたヘツド載置板６等から構
成されている。 The azimuth adjustment mechanism includes an azimuth adjuster 4, a rotating plate 5 rotated by the movement of the azimuth adjuster 4, and a head disposed on the rotating plate 5 on which the magnetic head 1 is placed. It is composed of a mounting plate 6 and the like.

第２図において回動板５は、その貫通孔５₁に
遊挿されたねじ７の先端が摺動基板２に螺合さ
れ、かつ回動板５とねじ７の頭部との間にスプリ
ング８が弾縮された状態で嵌装されることにより
摺動基板２の方向へ付勢されているが、その付勢
は一端側に植立した衝合ピン９₁の先端と摺動基
板２の下面との衝合とにより係止されている。 In FIG. 2, the rotary plate 5 has a screw 7 loosely inserted into its through hole ₅₁ , and the tip of the screw 7 is screwed into the sliding base plate 2, and a spring is inserted between the rotary plate 5 and the head of the screw 7. 8 is fitted in an elastically compressed state, and is biased toward the sliding substrate 2. This bias is applied between the tip of the abutting pin ₉₁ set on one end side and the sliding substrate 2. It is locked by the abutment with the lower surface of.

さらに回動板５は、衝合ピン９₁を挾んで両側
にそれぞれ先端部が摺動基板２に形成された貫通
孔２₂，２₂を遊嵌して摺動基板２の上面側に延在
するボス部９₂，９₂を備えており、このボス部９
_２，９₂の先端部にヘツド載置板６がねじ１０，１
０により固定配置されている。 Furthermore, the rotary plate 5 extends to the upper surface side of the sliding substrate 2 by loosely fitting through holes 2 ₂ and 2 ₂ formed in the sliding substrate 2 on both sides with the abutting pin 9 ₁ in between. The boss portions 9 ₂ , 9 ₂ are provided, and this boss portion 9
The _head mounting plate 6 is attached to the tip of the screws ₁₀ and 1.
It is fixedly arranged by 0.

ヘツド載置板６には磁気ヘツド１が載置される
が、その載置位置は衝合ピン９₁と摺動基板２と
の衝合位置がギヤツプ１₁の形成面Ｂ−Ｂ内にあ
るように設定されている。また、ヘツド載置板６
の下面と摺動基板２の上面との間には板ばね１１
が弾縮状態で配置されている。 The magnetic head 1 is placed on the head placement plate 6, and the position where the magnetic head 1 is placed is such that the abutting position between the abutting pin ₉₁ and the sliding substrate 2 is within the forming surface B-B of the gap ₁₁ . It is set as follows. In addition, the head mounting plate 6
A leaf spring 11 is connected between the lower surface of the sliding board 2 and the upper surface of the sliding board 2.
is placed in an elastic state.

回動基板５の上面を所要のガイド部材（図示せ
ず）によりガイドされ図示の矢印方向Ｃ−Ｃにお
いて摺動可能とされたアジマス調整子４は、その
一端側にアジマス調整用の傾斜面４₁が形成され
ており、この傾斜面４₁には摺動基板２に螺合さ
れたねじ１２の先端が衝合している。 The azimuth adjuster 4 is guided by a necessary guide member (not shown) on the upper surface of the rotating base plate 5 and is slidable in the direction of the arrow C-C shown in the figure. ₁ is formed, and the tip of a screw 12 screwed into the sliding substrate 2 abuts against this inclined surface ₄₁ .

シヤシ３上に配置されたモーター１３により所
要の減速手段（図示せず）を介して回転制御され
るカム板１４は、第１のレバー１５と第２のレバ
ー１６を介してアジマス調整子４を移動すべく所
要のカム面１４₁を有する。 A cam plate 14 whose rotation is controlled by a motor 13 disposed on the chassis 3 via a necessary speed reduction means (not shown) controls the azimuth adjuster 4 via a first lever 15 and a second lever 16. It has the required cam surface 14 ₁ to move.

第１のレバー１５は、その一端がシヤシ３上の
枢止軸１７に回動自在に枢止されると共に、その
他端に植立した所要径のトレースピン１８の周面
でカム板１４のカム面１４₁に衝合することによ
り、カム板１４の回転に従つて回動するよう配置
されている。また、略中央部が摺動基板２上の枢
止軸１９により回動自在に枢止された第２のレバ
ー１６は、その一端に形成された長孔１６₁が第
１のレバー１５のトレースピン１８に遊嵌される
と共に、その他端に形成された長孔１６₂にアジ
マス調整子４の他端に植立されたピン２０が遊嵌
されることにより、それぞれと連結されている。
なお、第２のレバー１６には、第１のレバー１５
に設けたトレースピン１８がカム面１４₁を常に
トレースするよう付勢スプリング２１が設けられ
ている。 One end of the first lever 15 is rotatably fixed to a pivot shaft 17 on the chassis 3, and the cam of the cam plate 14 is connected to the circumferential surface of a tracing pin 18 of a required diameter planted at the other end. It is arranged to rotate as the cam plate 14 rotates by abutting against the surface 14 ₁ . Further, the second lever 16 whose substantially central portion is rotatably pivoted by a pivot shaft 19 on the sliding base plate 2 has an elongated hole 16 ₁ formed at one end that traces the first lever 15 . The pin 18 is loosely fitted into the pin 18, and the pin 20, which is set up at the other end of the azimuth adjuster 4, is loosely fitted into the elongated hole ₁₆₂ formed at the other end, thereby being connected to each other.
Note that the second lever 16 is connected to the first lever 15.
A biasing spring 21 is provided so that the tracing pin 18 provided on the cam surface ₁₄₁ always traces the cam surface 141.

このように構成された磁気ヘツド１のアジマス
調整装置は、第１図に示すように前進位置をとる
再生モードにおいて、例えばアジマス調整用のテ
ストテープを用いて磁気ヘツド１のアジマス状態
が検出され、そのアジマスが狂つていると、これ
を修正すべくモータ１３がカム板１４を所定の方
向に所定の量だけ回動すべく駆動される。カム板
１４が回動されると第１のレバー１５は枢止軸１
７を中心に回動されるが、トレースピン１８の動
きは第１のレバー１５の回動範囲内であるため、
カム板１４の中心に対してそのトレース位置がほ
ぼ一定している。第１のレバー１５のこの回動変
位は、トレースピン１８と長孔１６₁の連結を介
して第２のレバー１６に伝達され、第２のレバー
１６は枢止軸１９を中心に回動し、これによりそ
の他端に連結されたアジマス調整子４は矢印方向
Ｃ−Ｃに移動される。そしてアジマス調整子４の
移動により、回動板５は、衝合ピン９₁と摺動基
板２の下面との衝合点を支点として回動し、磁気
ヘツド１のアジマス状態を変える。なお、摺動基
板２が前進位置と後退位置との間を移動する際
に、第２のレバー１６も摺動基板２と共に移動す
るが、第１のレバー１５と第２のレバー１６の連
結はトレースピン１８と長孔１６₁とにより構成
されているので、カム面１４₁に対するトレース
ピン１８のトレース位置には変位が生じないの
で、磁気ヘツド１のアジマス状態は摺動基板２の
移動により変化することはない。また、第１図及
び第２図に示すアジマス調整機構ではアジマスの
調整の際、磁気ヘツドのチルトも変化するように
見受けられるが、衝合ピン９₁、ねじ１２等を適
切な配置関係にすることより、チルトを変化させ
ることなくアジマス調整を行なうことが可能であ
ることは、当業者においては自明である。 The azimuth adjustment device for the magnetic head 1 configured as described above detects the azimuth state of the magnetic head 1 using, for example, a test tape for azimuth adjustment in the reproduction mode in which the head is in the forward position as shown in FIG. If the azimuth is out of alignment, the motor 13 is driven to rotate the cam plate 14 by a predetermined amount in a predetermined direction in order to correct this. When the cam plate 14 is rotated, the first lever 15 engages the pivot shaft 1
However, since the movement of the trace pin 18 is within the rotation range of the first lever 15,
The trace position with respect to the center of the cam plate 14 is approximately constant. This rotational displacement of the first lever 15 is transmitted to the second lever 16 through the connection between the trace pin 18 and the elongated hole ₁₆₁ , and the second lever 16 rotates around the pivot shaft 19. , whereby the azimuth adjuster 4 connected to the other end is moved in the direction of the arrow C--C. As the azimuth adjuster 4 moves, the rotary plate 5 rotates about the abutting point between the abutment pin ₉₁ and the lower surface of the sliding substrate 2 as a fulcrum, thereby changing the azimuth state of the magnetic head 1. Note that when the sliding board 2 moves between the forward position and the backward position, the second lever 16 also moves together with the sliding board 2, but the connection between the first lever 15 and the second lever 16 is Since it is composed of the trace pin 18 and the elongated hole 16 ₁ , the trace position of the trace pin 18 with respect to the cam surface 14 ₁ will not be displaced, so the azimuth state of the magnetic head 1 will change due to the movement of the sliding substrate 2. There's nothing to do. In addition, in the azimuth adjustment mechanism shown in FIGS. 1 and 2, the tilt of the magnetic head also appears to change when adjusting the azimuth, but the abutment pin 9 ₁ , screw 12, etc. should be properly arranged. Therefore, it is obvious to those skilled in the art that it is possible to adjust the azimuth without changing the tilt.

上述のごとく本考案によれば簡単な構成によ
り、正確な磁気ヘツドの自動アジマス調整を可能
とする磁気ヘツドのアジマス調整装置を実現でき
る。 As described above, according to the present invention, it is possible to realize a magnetic head azimuth adjustment device that enables accurate automatic azimuth adjustment of the magnetic head with a simple configuration.

[Brief explanation of drawings]

第１図は本考案装置の一実施例の説明に供する
図、及び第２図は第１図に示すアジマス調整機構
の要部正面図をそれぞれ示す。１……磁気ヘツド、２……摺動基板、３……シ
ヤシ、４……アジマス調整子、１４……カム板、
１５……第１のレバー、１６……第２のレバー、
１６₁……長孔、１７……第１のレバーの枢止軸、
１８……トレースピン、１９……第２のレバーの
枢止軸。 FIG. 1 is a diagram for explaining one embodiment of the device of the present invention, and FIG. 2 is a front view of the essential parts of the azimuth adjustment mechanism shown in FIG. 1. 1... Magnetic head, 2... Sliding board, 3... Shaft, 4... Azimuth adjuster, 14... Cam plate,
15...first lever, 16...second lever,
16 ₁ ...long hole, 17...first lever pivot shaft,
18... Trace pin, 19... Second lever pivot shaft.

Claims

[Claims for Utility Model Registration] (1) The azimuth is adjusted by moving an azimuth adjuster in a direction perpendicular to the forward and backward directions, and is placed on a sliding board that assumes a forward position and a backward position on the chassis. a magnetic head disposed on the chassis and whose rotation is controlled to move the azimuth adjuster; a first lever that is dynamically displaced; and a first lever that is pivotally fixed on the sliding base plate, one end of which is connected to the first lever, and the other end of which is connected to the azimuth adjuster. and a second lever that rotates and moves the azimuth adjuster in response to the rotational displacement, and the first lever and the second lever are connected by a connecting pin planted on one side and a connecting pin formed on the other side. An azimuth adjustment device for a magnetic head, characterized in that the azimuth adjustment device is adjusted by a connecting long hole. (2) The azimuth adjustment device for a magnetic head according to claim 1, wherein the connecting pin is the tracing pin installed on the first lever.