JPS5933124U

JPS5933124U - displacement device

Info

Publication number: JPS5933124U
Application number: JP12611982U
Authority: JP
Inventors: 正治神原
Original assignee: ティーディーケイ株式会社
Priority date: 1982-08-23
Filing date: 1982-08-23
Publication date: 1984-03-01

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図はヘリカルスキャン式磁気記録再生方式による磁
気ヘッドと磁気テープの関係を示す要部断面図、第２図
は磁気テープに記録された映像トラックと各種再生時の
磁気ヘッドの走査軌跡の関係を説明する図、第３図は各
種再生時の磁気ヘッドのトラッキング補正量を説明する
図、第４図は従来の変位装置の一例を示す斜視図、第５
図は第４図の変位装置の作用を説明する正面図、第６図
−はこの考案に係る変位装置の第一実施例の斜視図、第
７図は第６図の変位装置の作用を説明する正面図、第８
図は第二実施例の斜視図、第９図は第三実施例の斜視図
、第１０図は第９図の変位装置の作用を説明する正面図
である。２０．２０’・・・第１変位部材、２１．２１’・・・
第１屈曲片、２２．　２２’・・・第２屈曲片、２３・
・・第２変位部材、２４・・・第３屈曲片、２５．２５
′・・・連結部、２６．２６’・・・固定部、２８・・
・変位　　′部、２９・・・回転板、３０・・・磁気ヘ
ッド、３１・・・金属板、３２．　３２’、　　３３．
　３３’、　　３４・・・圧電セラミック、３５．３５
’、３６．３６’、３７・・・電極板、３８．３８’、
３９．３９’・・・接続線、４０・・・金属板、４１・
・・連結部。Ｐ７１皇し−ｒゝ−Ｌ６ｅ島廃現ｇｅｔFigure 1 is a cross-sectional view of the main part showing the relationship between the magnetic head and magnetic tape using the helical scan magnetic recording/reproducing method, and Figure 2 is the relationship between the video tracks recorded on the magnetic tape and the scanning locus of the magnetic head during various types of playback. 3 is a diagram illustrating the tracking correction amount of the magnetic head during various reproductions, FIG. 4 is a perspective view showing an example of a conventional displacement device, and FIG.
The figure is a front view explaining the operation of the displacement device shown in FIG. 4, FIG. 6 is a perspective view of the first embodiment of the displacement device according to this invention, and FIG. Front view, No. 8
9 is a perspective view of the second embodiment, FIG. 9 is a perspective view of the third embodiment, and FIG. 10 is a front view illustrating the operation of the displacement device of FIG. 9. 20.20'...first displacement member, 21.21'...
first bent piece, 22. 22'... second bent piece, 23.
...Second displacement member, 24...Third bending piece, 25.25
'...Connecting part, 26.26'...Fixing part, 28...
・Displacement ′ part, 29... Rotating plate, 30... Magnetic head, 31... Metal plate, 32. 32', 33.
33', 34...piezoelectric ceramic, 35.35
', 36.36', 37... electrode plate, 38.38',
39.39'... Connection wire, 40... Metal plate, 41.
...Connection part. P71 Emperor-rゝ-L 6e Island Abandonment get

Claims

[Scope of utility model registration request]

(1) at least one first displacement member formed by arranging first and second bending pieces in a row in the longitudinal direction;
A second displacement member having a bent piece is arranged parallel to each other, and one end side of the first displacement member and the second displacement member facing each other is connected, and the other end of the first displacement member is connected to the second displacement member. When the first bending piece and the third bending piece are bent in one direction at the same time, the second bending piece A displacement device characterized by bending a piece in the opposite direction.

(2) The displacement device according to claim 1, in which the first, second, and third bending pieces each comprise a bonded body of a metal plate and a piezoelectric element.

(3) The polarization directions of the piezoelectric elements constituting the first and third bending pieces are the same, and the polarization directions of the piezoelectric elements constituting the second bending piece are opposite, and the first and second bending pieces are The displacement device according to claim 2, wherein the lengths of the piezoelectric elements constituting the pieces are substantially equal.