JPS6365114U

JPS6365114U -

Info

Publication number: JPS6365114U
Application number: JP15838386U
Authority: JP
Priority date: 1986-10-16
Filing date: 1986-10-16
Publication date: 1988-04-28

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例による回転ヘツド
アセンブリの縦断面図、第２図は第１図の主要部
を拡大して示す図、第３図は第２図の底面図、第
４図はこの考案の他の実施例の、第３図と同様の
底面図、第５図は第１図乃至第３図の実施例にお
いてばねを保持するのにプラグに代えて使用しう
るリングを示す斜視図、第６図は従来の回転ヘツ
ドアセンブリの縦断面図である。図において、１は固定ドラム、２は回転ドラム
、３は磁気ヘツド、４は回転軸、４０１，４０２
はボール溝、５は軸受、５０１，５０２は外輪、
５０３，５０４はボール、５０５は予圧ばね、５
０７は位置決め装置、５１０，５１１，５１９，
５２０はセツトスクリユー、５１４，５１５はば
ねである。なお、各図中同一符号は同一または相
当部を示す。 Fig. 1 is a longitudinal sectional view of a rotary head assembly according to an embodiment of the invention, Fig. 2 is an enlarged view of the main parts of Fig. 1, Fig. 3 is a bottom view of Fig. 2, and Fig. 4 is a bottom view similar to FIG. 3 of another embodiment of the invention; FIG. 5 shows a ring which may be used in place of the plug to retain the spring in the embodiment of FIGS. 1-3; The perspective view, FIG. 6, is a longitudinal sectional view of a conventional rotary head assembly. In the figure, 1 is a fixed drum, 2 is a rotating drum, 3 is a magnetic head, 4 is a rotating shaft, 401, 402
is a ball groove, 5 is a bearing, 501 and 502 are outer rings,
503 and 504 are balls, 505 is a preload spring, 5
07 is a positioning device, 510, 511, 519,
520 is a set screw, and 514 and 515 are springs. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims

[Claims for Utility Model Registration] (1) A fixed drum, a rotating drum carrying a magnetic head, a rotating shaft rotatably supported by the fixed drum via a bearing, and to which the rotating drum is fixed; The bearing has two ball grooves formed in the circumferential direction at intervals in the axial direction of the rotating shaft, two outer rings disposed facing each of the ball grooves, and a connection between each of the ball grooves and the outer ring. It consists of a ball placed between the balls and a preload spring placed between the two outer rings.One of the two outer rings is press-fitted into the fixed drum, and the other is preloaded by the preload spring. A rotary head assembly of a magnetic recording and reproducing device is fixed to a fixed drum in a state in which a magnetic recording head is fixed to the fixed drum in a state in which the set screw is adjusted. A rotary head assembly for a magnetic recording/reproducing apparatus, characterized in that a positioning device is provided for adjusting the position of the other outer ring relative to the fixed drum by adjusting the position of the other outer ring relative to the fixed drum. (2) The positioning device is located 9 in the circumferential direction of the other outer ring.
A pair of set screws arranged at 0° intervals, and a distance of 180 degrees from each set screw in the circumferential direction.
A rotary head assembly for a magnetic recording and reproducing apparatus according to claim 1, characterized in that the rotary head assembly comprises a pair of springs that are arranged at a distance of 100° and apply a pressing force to the outer circumferential surface of the other outer ring. . (3) The positioning device rotates 9 in the circumferential direction of the other outer ring.
A rotary head assembly for a magnetic recording and reproducing apparatus according to claim 1, characterized in that it comprises four set screws arranged at 0° intervals.