JPH0296661U

JPH0296661U -

Info

Publication number: JPH0296661U
Application number: JP508789U
Authority: JP
Priority date: 1989-01-20
Filing date: 1989-01-20
Publication date: 1990-08-01

Description

[Brief explanation of drawings]

第１図はこの考案の第１実施例を示す一部切断
正面図、第２図はこの考案の第２実施例における
要部のみを示す一部切断正面図、第３図はこの考
案の第２実施例における要部のみを示す一部切断
正面図、第４図は従来の支持機構の一例を概略的
に示す説明図である。図面において、１１は回転アーム、１２は光走
査部、１３はバランサ部、１４は接続アーム、１
５，３１は貫通孔、１６，４２は支持軸、１７は
鋼球、１８，１９は受け部、２１はダンパ部材、
２２はつば部、２３，２４は上部および下部受け
部、３２は断部、３３はＯリング、４１は弾性材
、４３は軸受スリーブである。 Fig. 1 is a partially cutaway front view showing the first embodiment of this invention, Fig. 2 is a partially cutaway front view showing only the main parts of the second embodiment of this invention, and Fig. 3 is a partially cutaway front view showing only the main parts of the second embodiment of this invention. FIG. 4 is a partially cutaway front view showing only the main parts of the second embodiment, and is an explanatory diagram schematically showing an example of a conventional support mechanism. In the drawing, 11 is a rotating arm, 12 is an optical scanning section, 13 is a balancer section, 14 is a connecting arm, 1
5 and 31 are through holes, 16 and 42 are support shafts, 17 are steel balls, 18 and 19 are receiving parts, 21 is a damper member,
22 is a collar, 23 and 24 are upper and lower receiving parts, 32 is a cutout, 33 is an O-ring, 41 is an elastic material, and 43 is a bearing sleeve.

Claims

[Claims for Utility Model Registration] (1) In a rotating arm for an optical head that supports an optical head at one end and is rotatably supported so as to move the optical head in the radial direction of a recording medium, the balance of the rotating arm is A support mechanism having a support shaft vertically penetrating the point and rotatably supported at its upper and lower ends, and a buffer member provided at a contact surface between the outer peripheral surface of the support shaft and the rotating arm. A support mechanism for a rotating arm for an optical head, characterized by: (2) The support mechanism for a rotary arm for an optical head according to claim 1, wherein the buffer member is constituted by a collar-shaped elastic member into which the support shaft is inserted. (3) The diameter of the support shaft is smaller than the diameter of the insertion hole of the rotary arm, and the buffer member composed of an O-ring is fitted to the upper and lower ends of the insertion hole. The support mechanism for a rotary arm for an optical head according to claim 1. (4) The buffer member is characterized in that it is composed of a metal bearing sleeve whose contact surface side with the rotary arm is coated with an elastic member, and the outer peripheral surface of the support shaft is coated with a resin having a low coefficient of friction. A support mechanism for a rotary arm for an optical head according to claim 1. (5) The rotary arm for an optical head according to any one of claims 1 to 4, characterized in that the support shaft has bearing portions formed of rotatably supported balls at the upper and lower ends thereof. support mechanism.